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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
8788370a JDB |
72 | * way. |
73 | * The if_list is RCU protected, and the if_lock remains to protect updating | |
74 | * of if_list, from "add_device" as it invoked from userspace (via proc write). | |
1da177e4 | 75 | * |
4ec93edb YH |
76 | * By design there should only be *one* "controlling" process. In practice |
77 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 78 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 79 | * For practical use this should be no problem. |
1da177e4 | 80 | * |
4ec93edb YH |
81 | * Note when adding devices to a specific CPU there good idea to also assign |
82 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
83 | * --ro |
84 | * | |
4ec93edb | 85 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
86 | * memleak 030710- KJP |
87 | * | |
88 | * First "ranges" functionality for ipv6 030726 --ro | |
89 | * | |
90 | * Included flow support. 030802 ANK. | |
91 | * | |
92 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 93 | * |
1da177e4 LT |
94 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
95 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
96 | * | |
4ec93edb | 97 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
98 | * <shemminger@osdl.org> 040923 |
99 | * | |
ca9f1fd2 | 100 | * Randy Dunlap fixed u64 printk compiler warning |
1da177e4 LT |
101 | * |
102 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
103 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
104 | * | |
4ec93edb | 105 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
106 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
107 | * | |
4ec93edb | 108 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 109 | * 050103 |
ca6549af SW |
110 | * |
111 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
112 | * | |
34954ddc FF |
113 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
114 | * | |
ce5d0b47 AR |
115 | * Fixed src_mac command to set source mac of packet to value specified in |
116 | * command by Adit Ranadive <adit.262@gmail.com> | |
117 | * | |
1da177e4 | 118 | */ |
f9467eae JP |
119 | |
120 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
121 | ||
1da177e4 LT |
122 | #include <linux/sys.h> |
123 | #include <linux/types.h> | |
124 | #include <linux/module.h> | |
125 | #include <linux/moduleparam.h> | |
126 | #include <linux/kernel.h> | |
222fa076 | 127 | #include <linux/mutex.h> |
1da177e4 LT |
128 | #include <linux/sched.h> |
129 | #include <linux/slab.h> | |
130 | #include <linux/vmalloc.h> | |
1da177e4 LT |
131 | #include <linux/unistd.h> |
132 | #include <linux/string.h> | |
133 | #include <linux/ptrace.h> | |
134 | #include <linux/errno.h> | |
135 | #include <linux/ioport.h> | |
136 | #include <linux/interrupt.h> | |
4fc268d2 | 137 | #include <linux/capability.h> |
2bc481cf | 138 | #include <linux/hrtimer.h> |
09fe3ef4 | 139 | #include <linux/freezer.h> |
1da177e4 LT |
140 | #include <linux/delay.h> |
141 | #include <linux/timer.h> | |
cdcdbe0b | 142 | #include <linux/list.h> |
1da177e4 LT |
143 | #include <linux/init.h> |
144 | #include <linux/skbuff.h> | |
145 | #include <linux/netdevice.h> | |
146 | #include <linux/inet.h> | |
147 | #include <linux/inetdevice.h> | |
148 | #include <linux/rtnetlink.h> | |
149 | #include <linux/if_arp.h> | |
34954ddc | 150 | #include <linux/if_vlan.h> |
1da177e4 LT |
151 | #include <linux/in.h> |
152 | #include <linux/ip.h> | |
153 | #include <linux/ipv6.h> | |
154 | #include <linux/udp.h> | |
155 | #include <linux/proc_fs.h> | |
d50a6b56 | 156 | #include <linux/seq_file.h> |
1da177e4 | 157 | #include <linux/wait.h> |
f404e9a6 | 158 | #include <linux/etherdevice.h> |
ee74baa7 | 159 | #include <linux/kthread.h> |
268bb0ce | 160 | #include <linux/prefetch.h> |
457c4cbc | 161 | #include <net/net_namespace.h> |
1da177e4 LT |
162 | #include <net/checksum.h> |
163 | #include <net/ipv6.h> | |
c26bf4a5 | 164 | #include <net/udp.h> |
73d94e94 | 165 | #include <net/ip6_checksum.h> |
1da177e4 | 166 | #include <net/addrconf.h> |
a553e4a6 JHS |
167 | #ifdef CONFIG_XFRM |
168 | #include <net/xfrm.h> | |
169 | #endif | |
4e58a027 | 170 | #include <net/netns/generic.h> |
1da177e4 LT |
171 | #include <asm/byteorder.h> |
172 | #include <linux/rcupdate.h> | |
1977f032 | 173 | #include <linux/bitops.h> |
63adc6fb SH |
174 | #include <linux/io.h> |
175 | #include <linux/timex.h> | |
176 | #include <linux/uaccess.h> | |
1da177e4 | 177 | #include <asm/dma.h> |
222f1806 | 178 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 179 | |
43d28b65 | 180 | #define VERSION "2.74" |
1da177e4 | 181 | #define IP_NAME_SZ 32 |
ca6549af | 182 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 183 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 184 | |
f9467eae JP |
185 | #define func_enter() pr_debug("entering %s\n", __func__); |
186 | ||
1da177e4 | 187 | /* Device flag bits */ |
222f1806 LC |
188 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
189 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
190 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
191 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
192 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
193 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
194 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
195 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 196 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
197 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
198 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 199 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 200 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 201 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 202 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 203 | #define F_NODE (1<<15) /* Node memory alloc*/ |
c26bf4a5 | 204 | #define F_UDPCSUM (1<<16) /* Include UDP checksum */ |
afb84b62 | 205 | #define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */ |
1da177e4 LT |
206 | |
207 | /* Thread control flag bits */ | |
6b80d6a6 SH |
208 | #define T_STOP (1<<0) /* Stop run */ |
209 | #define T_RUN (1<<1) /* Start run */ | |
210 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
211 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 212 | |
8788370a | 213 | /* If lock -- protects updating of if_list */ |
1da177e4 LT |
214 | #define if_lock(t) spin_lock(&(t->if_lock)); |
215 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
216 | ||
217 | /* Used to help with determining the pkts on receive */ | |
218 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
219 | #define PG_PROC_DIR "pktgen" |
220 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
221 | |
222 | #define MAX_CFLOWS 65536 | |
223 | ||
34954ddc FF |
224 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
225 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
226 | ||
222f1806 | 227 | struct flow_state { |
252e3346 | 228 | __be32 cur_daddr; |
222f1806 | 229 | int count; |
a553e4a6 JHS |
230 | #ifdef CONFIG_XFRM |
231 | struct xfrm_state *x; | |
232 | #endif | |
007a531b | 233 | __u32 flags; |
1da177e4 LT |
234 | }; |
235 | ||
007a531b JHS |
236 | /* flow flag bits */ |
237 | #define F_INIT (1<<0) /* flow has been initialized */ | |
238 | ||
1da177e4 | 239 | struct pktgen_dev { |
1da177e4 LT |
240 | /* |
241 | * Try to keep frequent/infrequent used vars. separated. | |
242 | */ | |
39df232f SH |
243 | struct proc_dir_entry *entry; /* proc file */ |
244 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 245 | struct list_head list; /* chaining in the thread's run-queue */ |
8788370a | 246 | struct rcu_head rcu; /* freed by RCU */ |
1da177e4 | 247 | |
63adc6fb | 248 | int running; /* if false, the test will stop */ |
1da177e4 | 249 | |
222f1806 LC |
250 | /* If min != max, then we will either do a linear iteration, or |
251 | * we will do a random selection from within the range. | |
252 | */ | |
253 | __u32 flags; | |
95ed63f7 AK |
254 | int removal_mark; /* non-zero => the device is marked for |
255 | * removal by worker thread */ | |
1da177e4 | 256 | |
68bf9f0b AW |
257 | int min_pkt_size; |
258 | int max_pkt_size; | |
16dab72f | 259 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 260 | int nfrags; |
26ad7879 | 261 | struct page *page; |
fd29cf72 SH |
262 | u64 delay; /* nano-seconds */ |
263 | ||
222f1806 LC |
264 | __u64 count; /* Default No packets to send */ |
265 | __u64 sofar; /* How many pkts we've sent so far */ | |
266 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 267 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
268 | |
269 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
270 | |
271 | __u64 allocated_skbs; | |
272 | __u32 clone_count; | |
273 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
274 | * Or a failed transmit of some sort? |
275 | * This will keep sequence numbers in order | |
222f1806 | 276 | */ |
fd29cf72 SH |
277 | ktime_t next_tx; |
278 | ktime_t started_at; | |
279 | ktime_t stopped_at; | |
280 | u64 idle_acc; /* nano-seconds */ | |
281 | ||
222f1806 LC |
282 | __u32 seq_num; |
283 | ||
63adc6fb SH |
284 | int clone_skb; /* |
285 | * Use multiple SKBs during packet gen. | |
286 | * If this number is greater than 1, then | |
287 | * that many copies of the same packet will be | |
288 | * sent before a new packet is allocated. | |
289 | * If you want to send 1024 identical packets | |
290 | * before creating a new packet, | |
291 | * set clone_skb to 1024. | |
222f1806 LC |
292 | */ |
293 | ||
294 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
295 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
296 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
297 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
298 | ||
299 | struct in6_addr in6_saddr; | |
300 | struct in6_addr in6_daddr; | |
301 | struct in6_addr cur_in6_daddr; | |
302 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 303 | /* For ranges */ |
222f1806 LC |
304 | struct in6_addr min_in6_daddr; |
305 | struct in6_addr max_in6_daddr; | |
306 | struct in6_addr min_in6_saddr; | |
307 | struct in6_addr max_in6_saddr; | |
308 | ||
309 | /* If we're doing ranges, random or incremental, then this | |
310 | * defines the min/max for those ranges. | |
311 | */ | |
252e3346 AV |
312 | __be32 saddr_min; /* inclusive, source IP address */ |
313 | __be32 saddr_max; /* exclusive, source IP address */ | |
314 | __be32 daddr_min; /* inclusive, dest IP address */ | |
315 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
316 | |
317 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
318 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
319 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
320 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
321 | ||
1ca7768c | 322 | /* DSCP + ECN */ |
63adc6fb SH |
323 | __u8 tos; /* six MSB of (former) IPv4 TOS |
324 | are for dscp codepoint */ | |
325 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
326 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 327 | |
ca6549af | 328 | /* MPLS */ |
95c96174 | 329 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
330 | __be32 labels[MAX_MPLS_LABELS]; |
331 | ||
34954ddc FF |
332 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
333 | __u8 vlan_p; | |
334 | __u8 vlan_cfi; | |
335 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
336 | ||
337 | __u8 svlan_p; | |
338 | __u8 svlan_cfi; | |
339 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
340 | ||
222f1806 LC |
341 | __u32 src_mac_count; /* How many MACs to iterate through */ |
342 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
343 | ||
344 | unsigned char dst_mac[ETH_ALEN]; | |
345 | unsigned char src_mac[ETH_ALEN]; | |
346 | ||
347 | __u32 cur_dst_mac_offset; | |
348 | __u32 cur_src_mac_offset; | |
252e3346 AV |
349 | __be32 cur_saddr; |
350 | __be32 cur_daddr; | |
66ed1e5e | 351 | __u16 ip_id; |
222f1806 LC |
352 | __u16 cur_udp_dst; |
353 | __u16 cur_udp_src; | |
45b270f8 | 354 | __u16 cur_queue_map; |
222f1806 | 355 | __u32 cur_pkt_size; |
baac8564 | 356 | __u32 last_pkt_size; |
222f1806 LC |
357 | |
358 | __u8 hh[14]; | |
359 | /* = { | |
360 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
361 | ||
362 | We fill in SRC address later | |
363 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
364 | 0x08, 0x00 | |
365 | }; | |
366 | */ | |
367 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
368 | ||
63adc6fb | 369 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
370 | * are transmitting the same one multiple times |
371 | */ | |
63adc6fb SH |
372 | struct net_device *odev; /* The out-going device. |
373 | * Note that the device should have it's | |
374 | * pg_info pointer pointing back to this | |
375 | * device. | |
376 | * Set when the user specifies the out-going | |
377 | * device name (not when the inject is | |
378 | * started as it used to do.) | |
379 | */ | |
593f63b0 | 380 | char odevname[32]; |
1da177e4 | 381 | struct flow_state *flows; |
95c96174 ED |
382 | unsigned int cflows; /* Concurrent flows (config) */ |
383 | unsigned int lflow; /* Flow length (config) */ | |
384 | unsigned int nflows; /* accumulated flows (stats) */ | |
385 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
386 | |
387 | u16 queue_map_min; | |
388 | u16 queue_map_max; | |
9e50e3ac | 389 | __u32 skb_priority; /* skb priority field */ |
38b2cf29 | 390 | unsigned int burst; /* number of duplicated packets to burst */ |
e99b99b4 | 391 | int node; /* Memory node */ |
45b270f8 | 392 | |
a553e4a6 JHS |
393 | #ifdef CONFIG_XFRM |
394 | __u8 ipsmode; /* IPSEC mode (config) */ | |
395 | __u8 ipsproto; /* IPSEC type (config) */ | |
de4aee7d | 396 | __u32 spi; |
cf93d47e FD |
397 | struct dst_entry dst; |
398 | struct dst_ops dstops; | |
a553e4a6 | 399 | #endif |
39df232f | 400 | char result[512]; |
1da177e4 LT |
401 | }; |
402 | ||
403 | struct pktgen_hdr { | |
252e3346 AV |
404 | __be32 pgh_magic; |
405 | __be32 seq_num; | |
406 | __be32 tv_sec; | |
407 | __be32 tv_usec; | |
1da177e4 LT |
408 | }; |
409 | ||
4e58a027 CW |
410 | |
411 | static int pg_net_id __read_mostly; | |
412 | ||
413 | struct pktgen_net { | |
414 | struct net *net; | |
415 | struct proc_dir_entry *proc_dir; | |
416 | struct list_head pktgen_threads; | |
417 | bool pktgen_exiting; | |
418 | }; | |
551eaff1 | 419 | |
1da177e4 | 420 | struct pktgen_thread { |
63adc6fb | 421 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 422 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 423 | struct list_head th_list; |
ee74baa7 | 424 | struct task_struct *tsk; |
222f1806 | 425 | char result[512]; |
222f1806 | 426 | |
63adc6fb SH |
427 | /* Field for thread to receive "posted" events terminate, |
428 | stop ifs etc. */ | |
222f1806 LC |
429 | |
430 | u32 control; | |
1da177e4 LT |
431 | int cpu; |
432 | ||
222f1806 | 433 | wait_queue_head_t queue; |
d3ede327 | 434 | struct completion start_done; |
4e58a027 | 435 | struct pktgen_net *net; |
1da177e4 LT |
436 | }; |
437 | ||
438 | #define REMOVE 1 | |
439 | #define FIND 0 | |
440 | ||
c3d2f52d | 441 | static const char version[] = |
f9467eae JP |
442 | "Packet Generator for packet performance testing. " |
443 | "Version: " VERSION "\n"; | |
1da177e4 | 444 | |
222f1806 LC |
445 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
446 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
447 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 448 | const char *ifname, bool exact); |
1da177e4 | 449 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
450 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
451 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
452 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 453 | |
222f1806 | 454 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 455 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 456 | |
1da177e4 | 457 | /* Module parameters, defaults. */ |
65c5b786 SH |
458 | static int pg_count_d __read_mostly = 1000; |
459 | static int pg_delay_d __read_mostly; | |
460 | static int pg_clone_skb_d __read_mostly; | |
461 | static int debug __read_mostly; | |
1da177e4 | 462 | |
222fa076 | 463 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 464 | |
1da177e4 LT |
465 | static struct notifier_block pktgen_notifier_block = { |
466 | .notifier_call = pktgen_device_event, | |
467 | }; | |
468 | ||
1da177e4 | 469 | /* |
4ec93edb | 470 | * /proc handling functions |
1da177e4 LT |
471 | * |
472 | */ | |
473 | ||
d50a6b56 | 474 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 475 | { |
c3d2f52d | 476 | seq_puts(seq, version); |
d50a6b56 | 477 | return 0; |
1da177e4 LT |
478 | } |
479 | ||
63adc6fb SH |
480 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
481 | size_t count, loff_t *ppos) | |
1da177e4 | 482 | { |
d50a6b56 | 483 | char data[128]; |
4e58a027 | 484 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 485 | |
09455747 MK |
486 | if (!capable(CAP_NET_ADMIN)) |
487 | return -EPERM; | |
1da177e4 | 488 | |
20b0c718 MK |
489 | if (count == 0) |
490 | return -EINVAL; | |
491 | ||
d50a6b56 SH |
492 | if (count > sizeof(data)) |
493 | count = sizeof(data); | |
1da177e4 | 494 | |
09455747 MK |
495 | if (copy_from_user(data, buf, count)) |
496 | return -EFAULT; | |
497 | ||
20b0c718 | 498 | data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ |
1da177e4 | 499 | |
222f1806 | 500 | if (!strcmp(data, "stop")) |
4e58a027 | 501 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 502 | |
222f1806 | 503 | else if (!strcmp(data, "start")) |
4e58a027 | 504 | pktgen_run_all_threads(pn); |
1da177e4 | 505 | |
eb37b41c | 506 | else if (!strcmp(data, "reset")) |
4e58a027 | 507 | pktgen_reset_all_threads(pn); |
eb37b41c | 508 | |
222f1806 | 509 | else |
294a0b7f | 510 | pr_warn("Unknown command: %s\n", data); |
1da177e4 | 511 | |
09455747 | 512 | return count; |
1da177e4 LT |
513 | } |
514 | ||
d50a6b56 SH |
515 | static int pgctrl_open(struct inode *inode, struct file *file) |
516 | { | |
d9dda78b | 517 | return single_open(file, pgctrl_show, PDE_DATA(inode)); |
d50a6b56 SH |
518 | } |
519 | ||
9a32144e | 520 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
521 | .owner = THIS_MODULE, |
522 | .open = pgctrl_open, | |
523 | .read = seq_read, | |
524 | .llseek = seq_lseek, | |
525 | .write = pgctrl_write, | |
526 | .release = single_release, | |
d50a6b56 SH |
527 | }; |
528 | ||
529 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 530 | { |
648fda74 | 531 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
532 | ktime_t stopped; |
533 | u64 idle; | |
222f1806 LC |
534 | |
535 | seq_printf(seq, | |
536 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
537 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
538 | pkt_dev->max_pkt_size); | |
539 | ||
540 | seq_printf(seq, | |
fd29cf72 SH |
541 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
542 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 543 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
544 | |
545 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
546 | pkt_dev->lflow); | |
547 | ||
45b270f8 RO |
548 | seq_printf(seq, |
549 | " queue_map_min: %u queue_map_max: %u\n", | |
550 | pkt_dev->queue_map_min, | |
551 | pkt_dev->queue_map_max); | |
552 | ||
9e50e3ac JF |
553 | if (pkt_dev->skb_priority) |
554 | seq_printf(seq, " skb_priority: %u\n", | |
555 | pkt_dev->skb_priority); | |
556 | ||
222f1806 | 557 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 558 | seq_printf(seq, |
47a0200d AD |
559 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
560 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
561 | &pkt_dev->in6_saddr, | |
562 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
563 | &pkt_dev->in6_daddr, | |
564 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
565 | } else { |
566 | seq_printf(seq, | |
567 | " dst_min: %s dst_max: %s\n", | |
568 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 569 | seq_printf(seq, |
63adc6fb SH |
570 | " src_min: %s src_max: %s\n", |
571 | pkt_dev->src_min, pkt_dev->src_max); | |
572 | } | |
1da177e4 | 573 | |
222f1806 | 574 | seq_puts(seq, " src_mac: "); |
1da177e4 | 575 | |
e174961c JB |
576 | seq_printf(seq, "%pM ", |
577 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
578 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 | 579 | |
97dc48e2 | 580 | seq_puts(seq, "dst_mac: "); |
e174961c | 581 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
582 | |
583 | seq_printf(seq, | |
63adc6fb SH |
584 | " udp_src_min: %d udp_src_max: %d" |
585 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
586 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
587 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
588 | ||
589 | seq_printf(seq, | |
ca6549af | 590 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 591 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 592 | |
ca6549af | 593 | if (pkt_dev->nr_labels) { |
95c96174 | 594 | unsigned int i; |
97dc48e2 | 595 | seq_puts(seq, " mpls: "); |
e71a4783 | 596 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
597 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
598 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
599 | } | |
600 | ||
63adc6fb | 601 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 602 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
603 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
604 | pkt_dev->vlan_cfi); | |
34954ddc | 605 | |
63adc6fb | 606 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 607 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
608 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
609 | pkt_dev->svlan_cfi); | |
34954ddc | 610 | |
63adc6fb | 611 | if (pkt_dev->tos) |
1ca7768c | 612 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 613 | |
63adc6fb | 614 | if (pkt_dev->traffic_class) |
1ca7768c | 615 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 616 | |
38b2cf29 AS |
617 | if (pkt_dev->burst > 1) |
618 | seq_printf(seq, " burst: %d\n", pkt_dev->burst); | |
619 | ||
e99b99b4 RO |
620 | if (pkt_dev->node >= 0) |
621 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
622 | ||
97dc48e2 | 623 | seq_puts(seq, " Flags: "); |
ca6549af | 624 | |
222f1806 | 625 | if (pkt_dev->flags & F_IPV6) |
97dc48e2 | 626 | seq_puts(seq, "IPV6 "); |
1da177e4 | 627 | |
222f1806 | 628 | if (pkt_dev->flags & F_IPSRC_RND) |
97dc48e2 | 629 | seq_puts(seq, "IPSRC_RND "); |
1da177e4 | 630 | |
222f1806 | 631 | if (pkt_dev->flags & F_IPDST_RND) |
97dc48e2 | 632 | seq_puts(seq, "IPDST_RND "); |
1da177e4 | 633 | |
222f1806 | 634 | if (pkt_dev->flags & F_TXSIZE_RND) |
97dc48e2 | 635 | seq_puts(seq, "TXSIZE_RND "); |
1da177e4 | 636 | |
222f1806 | 637 | if (pkt_dev->flags & F_UDPSRC_RND) |
97dc48e2 | 638 | seq_puts(seq, "UDPSRC_RND "); |
1da177e4 | 639 | |
222f1806 | 640 | if (pkt_dev->flags & F_UDPDST_RND) |
97dc48e2 | 641 | seq_puts(seq, "UDPDST_RND "); |
1da177e4 | 642 | |
c26bf4a5 | 643 | if (pkt_dev->flags & F_UDPCSUM) |
97dc48e2 | 644 | seq_puts(seq, "UDPCSUM "); |
c26bf4a5 | 645 | |
afb84b62 JDB |
646 | if (pkt_dev->flags & F_NO_TIMESTAMP) |
647 | seq_puts(seq, "NO_TIMESTAMP "); | |
648 | ||
ca6549af | 649 | if (pkt_dev->flags & F_MPLS_RND) |
97dc48e2 | 650 | seq_puts(seq, "MPLS_RND "); |
ca6549af | 651 | |
45b270f8 | 652 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
97dc48e2 | 653 | seq_puts(seq, "QUEUE_MAP_RND "); |
45b270f8 | 654 | |
e6fce5b9 | 655 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
97dc48e2 | 656 | seq_puts(seq, "QUEUE_MAP_CPU "); |
e6fce5b9 | 657 | |
007a531b JHS |
658 | if (pkt_dev->cflows) { |
659 | if (pkt_dev->flags & F_FLOW_SEQ) | |
97dc48e2 | 660 | seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/ |
007a531b | 661 | else |
97dc48e2 | 662 | seq_puts(seq, "FLOW_RND "); |
007a531b JHS |
663 | } |
664 | ||
a553e4a6 | 665 | #ifdef CONFIG_XFRM |
8101328b | 666 | if (pkt_dev->flags & F_IPSEC_ON) { |
97dc48e2 | 667 | seq_puts(seq, "IPSEC "); |
8101328b FD |
668 | if (pkt_dev->spi) |
669 | seq_printf(seq, "spi:%u", pkt_dev->spi); | |
670 | } | |
a553e4a6 JHS |
671 | #endif |
672 | ||
222f1806 | 673 | if (pkt_dev->flags & F_MACSRC_RND) |
97dc48e2 | 674 | seq_puts(seq, "MACSRC_RND "); |
1da177e4 | 675 | |
222f1806 | 676 | if (pkt_dev->flags & F_MACDST_RND) |
97dc48e2 | 677 | seq_puts(seq, "MACDST_RND "); |
1da177e4 | 678 | |
34954ddc | 679 | if (pkt_dev->flags & F_VID_RND) |
97dc48e2 | 680 | seq_puts(seq, "VID_RND "); |
34954ddc FF |
681 | |
682 | if (pkt_dev->flags & F_SVID_RND) | |
97dc48e2 | 683 | seq_puts(seq, "SVID_RND "); |
34954ddc | 684 | |
e99b99b4 | 685 | if (pkt_dev->flags & F_NODE) |
97dc48e2 | 686 | seq_puts(seq, "NODE_ALLOC "); |
e99b99b4 | 687 | |
222f1806 LC |
688 | seq_puts(seq, "\n"); |
689 | ||
fd29cf72 | 690 | /* not really stopped, more like last-running-at */ |
398f382c | 691 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
692 | idle = pkt_dev->idle_acc; |
693 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 694 | |
222f1806 | 695 | seq_printf(seq, |
fd29cf72 | 696 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 697 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
698 | (unsigned long long)pkt_dev->errors); |
699 | ||
700 | seq_printf(seq, | |
701 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
702 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
703 | (unsigned long long) ktime_to_us(stopped), | |
704 | (unsigned long long) idle); | |
1da177e4 | 705 | |
222f1806 LC |
706 | seq_printf(seq, |
707 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
708 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
709 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 710 | |
222f1806 | 711 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
712 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
713 | &pkt_dev->cur_in6_saddr, | |
714 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 715 | } else |
0373a946 AW |
716 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
717 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 718 | |
222f1806 | 719 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 720 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 721 | |
45b270f8 RO |
722 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
723 | ||
222f1806 | 724 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
725 | |
726 | if (pkt_dev->result[0]) | |
222f1806 | 727 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 728 | else |
97dc48e2 | 729 | seq_puts(seq, "Result: Idle\n"); |
1da177e4 | 730 | |
d50a6b56 | 731 | return 0; |
1da177e4 LT |
732 | } |
733 | ||
ca6549af | 734 | |
63adc6fb SH |
735 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
736 | __u32 *num) | |
ca6549af SW |
737 | { |
738 | int i = 0; | |
739 | *num = 0; | |
740 | ||
e71a4783 | 741 | for (; i < maxlen; i++) { |
82fd5b5d | 742 | int value; |
ca6549af SW |
743 | char c; |
744 | *num <<= 4; | |
745 | if (get_user(c, &user_buffer[i])) | |
746 | return -EFAULT; | |
82fd5b5d AS |
747 | value = hex_to_bin(c); |
748 | if (value >= 0) | |
749 | *num |= value; | |
ca6549af SW |
750 | else |
751 | break; | |
752 | } | |
753 | return i; | |
754 | } | |
755 | ||
222f1806 LC |
756 | static int count_trail_chars(const char __user * user_buffer, |
757 | unsigned int maxlen) | |
1da177e4 LT |
758 | { |
759 | int i; | |
760 | ||
761 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
762 | char c; |
763 | if (get_user(c, &user_buffer[i])) | |
764 | return -EFAULT; | |
765 | switch (c) { | |
1da177e4 LT |
766 | case '\"': |
767 | case '\n': | |
768 | case '\r': | |
769 | case '\t': | |
770 | case ' ': | |
771 | case '=': | |
772 | break; | |
773 | default: | |
774 | goto done; | |
3ff50b79 | 775 | } |
1da177e4 LT |
776 | } |
777 | done: | |
778 | return i; | |
779 | } | |
780 | ||
bf0813bd PG |
781 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
782 | unsigned long *num) | |
1da177e4 | 783 | { |
d6182223 | 784 | int i; |
1da177e4 | 785 | *num = 0; |
222f1806 | 786 | |
d6182223 | 787 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
788 | char c; |
789 | if (get_user(c, &user_buffer[i])) | |
790 | return -EFAULT; | |
791 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 792 | *num *= 10; |
222f1806 | 793 | *num += c - '0'; |
1da177e4 LT |
794 | } else |
795 | break; | |
796 | } | |
797 | return i; | |
798 | } | |
799 | ||
222f1806 | 800 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 801 | { |
d6182223 | 802 | int i; |
1da177e4 | 803 | |
d6182223 | 804 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
805 | char c; |
806 | if (get_user(c, &user_buffer[i])) | |
807 | return -EFAULT; | |
808 | switch (c) { | |
1da177e4 LT |
809 | case '\"': |
810 | case '\n': | |
811 | case '\r': | |
812 | case '\t': | |
813 | case ' ': | |
814 | goto done_str; | |
1da177e4 LT |
815 | default: |
816 | break; | |
3ff50b79 | 817 | } |
1da177e4 LT |
818 | } |
819 | done_str: | |
1da177e4 LT |
820 | return i; |
821 | } | |
822 | ||
ca6549af SW |
823 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
824 | { | |
95c96174 | 825 | unsigned int n = 0; |
ca6549af SW |
826 | char c; |
827 | ssize_t i = 0; | |
828 | int len; | |
829 | ||
830 | pkt_dev->nr_labels = 0; | |
831 | do { | |
832 | __u32 tmp; | |
1ca7768c | 833 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
834 | if (len <= 0) |
835 | return len; | |
836 | pkt_dev->labels[n] = htonl(tmp); | |
837 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
838 | pkt_dev->flags |= F_MPLS_RND; | |
839 | i += len; | |
840 | if (get_user(c, &buffer[i])) | |
841 | return -EFAULT; | |
842 | i++; | |
843 | n++; | |
844 | if (n >= MAX_MPLS_LABELS) | |
845 | return -E2BIG; | |
e71a4783 | 846 | } while (c == ','); |
ca6549af SW |
847 | |
848 | pkt_dev->nr_labels = n; | |
849 | return i; | |
850 | } | |
851 | ||
222f1806 LC |
852 | static ssize_t pktgen_if_write(struct file *file, |
853 | const char __user * user_buffer, size_t count, | |
854 | loff_t * offset) | |
1da177e4 | 855 | { |
8a994a71 | 856 | struct seq_file *seq = file->private_data; |
222f1806 | 857 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 858 | int i, max, len; |
1da177e4 LT |
859 | char name[16], valstr[32]; |
860 | unsigned long value = 0; | |
222f1806 LC |
861 | char *pg_result = NULL; |
862 | int tmp = 0; | |
1da177e4 | 863 | char buf[128]; |
222f1806 LC |
864 | |
865 | pg_result = &(pkt_dev->result[0]); | |
866 | ||
1da177e4 | 867 | if (count < 1) { |
294a0b7f | 868 | pr_warn("wrong command format\n"); |
1da177e4 LT |
869 | return -EINVAL; |
870 | } | |
222f1806 | 871 | |
d6182223 PG |
872 | max = count; |
873 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 874 | if (tmp < 0) { |
294a0b7f | 875 | pr_warn("illegal format\n"); |
222f1806 | 876 | return tmp; |
1da177e4 | 877 | } |
d6182223 | 878 | i = tmp; |
222f1806 | 879 | |
1da177e4 LT |
880 | /* Read variable name */ |
881 | ||
882 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 883 | if (len < 0) |
222f1806 | 884 | return len; |
63adc6fb | 885 | |
1da177e4 | 886 | memset(name, 0, sizeof(name)); |
222f1806 | 887 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
888 | return -EFAULT; |
889 | i += len; | |
222f1806 LC |
890 | |
891 | max = count - i; | |
1da177e4 | 892 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
893 | if (len < 0) |
894 | return len; | |
895 | ||
1da177e4 LT |
896 | i += len; |
897 | ||
898 | if (debug) { | |
86c2c0a8 | 899 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
900 | char tb[copy + 1]; |
901 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 902 | return -EFAULT; |
448d7b5d | 903 | tb[copy] = 0; |
f342cda7 JP |
904 | pr_debug("%s,%lu buffer -:%s:-\n", |
905 | name, (unsigned long)count, tb); | |
222f1806 | 906 | } |
1da177e4 LT |
907 | |
908 | if (!strcmp(name, "min_pkt_size")) { | |
909 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 910 | if (len < 0) |
222f1806 | 911 | return len; |
63adc6fb | 912 | |
1da177e4 | 913 | i += len; |
222f1806 LC |
914 | if (value < 14 + 20 + 8) |
915 | value = 14 + 20 + 8; | |
916 | if (value != pkt_dev->min_pkt_size) { | |
917 | pkt_dev->min_pkt_size = value; | |
918 | pkt_dev->cur_pkt_size = value; | |
919 | } | |
920 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
921 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
922 | return count; |
923 | } | |
924 | ||
222f1806 | 925 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 926 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 927 | if (len < 0) |
222f1806 | 928 | return len; |
63adc6fb | 929 | |
1da177e4 | 930 | i += len; |
222f1806 LC |
931 | if (value < 14 + 20 + 8) |
932 | value = 14 + 20 + 8; | |
933 | if (value != pkt_dev->max_pkt_size) { | |
934 | pkt_dev->max_pkt_size = value; | |
935 | pkt_dev->cur_pkt_size = value; | |
936 | } | |
937 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
938 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
939 | return count; |
940 | } | |
941 | ||
222f1806 | 942 | /* Shortcut for min = max */ |
1da177e4 LT |
943 | |
944 | if (!strcmp(name, "pkt_size")) { | |
945 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 946 | if (len < 0) |
222f1806 | 947 | return len; |
63adc6fb | 948 | |
1da177e4 | 949 | i += len; |
222f1806 LC |
950 | if (value < 14 + 20 + 8) |
951 | value = 14 + 20 + 8; | |
952 | if (value != pkt_dev->min_pkt_size) { | |
953 | pkt_dev->min_pkt_size = value; | |
954 | pkt_dev->max_pkt_size = value; | |
955 | pkt_dev->cur_pkt_size = value; | |
956 | } | |
1da177e4 LT |
957 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
958 | return count; | |
959 | } | |
960 | ||
222f1806 | 961 | if (!strcmp(name, "debug")) { |
1da177e4 | 962 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 963 | if (len < 0) |
222f1806 | 964 | return len; |
63adc6fb | 965 | |
1da177e4 | 966 | i += len; |
222f1806 | 967 | debug = value; |
1da177e4 LT |
968 | sprintf(pg_result, "OK: debug=%u", debug); |
969 | return count; | |
970 | } | |
971 | ||
222f1806 | 972 | if (!strcmp(name, "frags")) { |
1da177e4 | 973 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 974 | if (len < 0) |
222f1806 | 975 | return len; |
63adc6fb | 976 | |
1da177e4 LT |
977 | i += len; |
978 | pkt_dev->nfrags = value; | |
979 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
980 | return count; | |
981 | } | |
982 | if (!strcmp(name, "delay")) { | |
983 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 984 | if (len < 0) |
222f1806 | 985 | return len; |
63adc6fb | 986 | |
1da177e4 | 987 | i += len; |
fd29cf72 SH |
988 | if (value == 0x7FFFFFFF) |
989 | pkt_dev->delay = ULLONG_MAX; | |
990 | else | |
9240d715 | 991 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
992 | |
993 | sprintf(pg_result, "OK: delay=%llu", | |
994 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
995 | return count; |
996 | } | |
43d28b65 DT |
997 | if (!strcmp(name, "rate")) { |
998 | len = num_arg(&user_buffer[i], 10, &value); | |
999 | if (len < 0) | |
1000 | return len; | |
1001 | ||
1002 | i += len; | |
1003 | if (!value) | |
1004 | return len; | |
1005 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
1006 | if (debug) | |
f9467eae | 1007 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1008 | |
1009 | sprintf(pg_result, "OK: rate=%lu", value); | |
1010 | return count; | |
1011 | } | |
1012 | if (!strcmp(name, "ratep")) { | |
1013 | len = num_arg(&user_buffer[i], 10, &value); | |
1014 | if (len < 0) | |
1015 | return len; | |
1016 | ||
1017 | i += len; | |
1018 | if (!value) | |
1019 | return len; | |
1020 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1021 | if (debug) | |
f9467eae | 1022 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1023 | |
1024 | sprintf(pg_result, "OK: rate=%lu", value); | |
1025 | return count; | |
1026 | } | |
222f1806 | 1027 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1028 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1029 | if (len < 0) |
222f1806 | 1030 | return len; |
63adc6fb | 1031 | |
1da177e4 | 1032 | i += len; |
222f1806 LC |
1033 | if (value != pkt_dev->udp_src_min) { |
1034 | pkt_dev->udp_src_min = value; | |
1035 | pkt_dev->cur_udp_src = value; | |
1036 | } | |
1da177e4 LT |
1037 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1038 | return count; | |
1039 | } | |
222f1806 | 1040 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1041 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1042 | if (len < 0) |
222f1806 | 1043 | return len; |
63adc6fb | 1044 | |
1da177e4 | 1045 | i += len; |
222f1806 LC |
1046 | if (value != pkt_dev->udp_dst_min) { |
1047 | pkt_dev->udp_dst_min = value; | |
1048 | pkt_dev->cur_udp_dst = value; | |
1049 | } | |
1da177e4 LT |
1050 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1051 | return count; | |
1052 | } | |
222f1806 | 1053 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1054 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1055 | if (len < 0) |
222f1806 | 1056 | return len; |
63adc6fb | 1057 | |
1da177e4 | 1058 | i += len; |
222f1806 LC |
1059 | if (value != pkt_dev->udp_src_max) { |
1060 | pkt_dev->udp_src_max = value; | |
1061 | pkt_dev->cur_udp_src = value; | |
1062 | } | |
1da177e4 LT |
1063 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1064 | return count; | |
1065 | } | |
222f1806 | 1066 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1067 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1068 | if (len < 0) |
222f1806 | 1069 | return len; |
63adc6fb | 1070 | |
1da177e4 | 1071 | i += len; |
222f1806 LC |
1072 | if (value != pkt_dev->udp_dst_max) { |
1073 | pkt_dev->udp_dst_max = value; | |
1074 | pkt_dev->cur_udp_dst = value; | |
1075 | } | |
1da177e4 LT |
1076 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1077 | return count; | |
1078 | } | |
1079 | if (!strcmp(name, "clone_skb")) { | |
1080 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1081 | if (len < 0) |
222f1806 | 1082 | return len; |
d8873315 NH |
1083 | if ((value > 0) && |
1084 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
1085 | return -ENOTSUPP; | |
1da177e4 | 1086 | i += len; |
222f1806 LC |
1087 | pkt_dev->clone_skb = value; |
1088 | ||
1da177e4 LT |
1089 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1090 | return count; | |
1091 | } | |
1092 | if (!strcmp(name, "count")) { | |
1093 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1094 | if (len < 0) |
222f1806 | 1095 | return len; |
63adc6fb | 1096 | |
1da177e4 LT |
1097 | i += len; |
1098 | pkt_dev->count = value; | |
1099 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1100 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1101 | return count; |
1102 | } | |
1103 | if (!strcmp(name, "src_mac_count")) { | |
1104 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1105 | if (len < 0) |
222f1806 | 1106 | return len; |
63adc6fb | 1107 | |
1da177e4 LT |
1108 | i += len; |
1109 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1110 | pkt_dev->src_mac_count = value; |
1111 | pkt_dev->cur_src_mac_offset = 0; | |
1112 | } | |
1113 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1114 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1115 | return count; |
1116 | } | |
1117 | if (!strcmp(name, "dst_mac_count")) { | |
1118 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1119 | if (len < 0) |
222f1806 | 1120 | return len; |
63adc6fb | 1121 | |
1da177e4 LT |
1122 | i += len; |
1123 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1124 | pkt_dev->dst_mac_count = value; |
1125 | pkt_dev->cur_dst_mac_offset = 0; | |
1126 | } | |
1127 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1128 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1129 | return count; |
1130 | } | |
38b2cf29 AS |
1131 | if (!strcmp(name, "burst")) { |
1132 | len = num_arg(&user_buffer[i], 10, &value); | |
1133 | if (len < 0) | |
1134 | return len; | |
1135 | ||
1136 | i += len; | |
1137 | pkt_dev->burst = value < 1 ? 1 : value; | |
1138 | sprintf(pg_result, "OK: burst=%d", pkt_dev->burst); | |
1139 | return count; | |
1140 | } | |
e99b99b4 RO |
1141 | if (!strcmp(name, "node")) { |
1142 | len = num_arg(&user_buffer[i], 10, &value); | |
1143 | if (len < 0) | |
1144 | return len; | |
1145 | ||
1146 | i += len; | |
1147 | ||
1148 | if (node_possible(value)) { | |
1149 | pkt_dev->node = value; | |
1150 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1151 | if (pkt_dev->page) { |
1152 | put_page(pkt_dev->page); | |
1153 | pkt_dev->page = NULL; | |
1154 | } | |
e99b99b4 RO |
1155 | } |
1156 | else | |
1157 | sprintf(pg_result, "ERROR: node not possible"); | |
1158 | return count; | |
1159 | } | |
1da177e4 | 1160 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1161 | char f[32]; |
1162 | memset(f, 0, 32); | |
1da177e4 | 1163 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1164 | if (len < 0) |
222f1806 | 1165 | return len; |
63adc6fb | 1166 | |
1da177e4 LT |
1167 | if (copy_from_user(f, &user_buffer[i], len)) |
1168 | return -EFAULT; | |
1169 | i += len; | |
222f1806 LC |
1170 | if (strcmp(f, "IPSRC_RND") == 0) |
1171 | pkt_dev->flags |= F_IPSRC_RND; | |
1172 | ||
1173 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1174 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1175 | ||
1176 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1177 | pkt_dev->flags |= F_TXSIZE_RND; | |
1178 | ||
1179 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1180 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1181 | ||
1182 | else if (strcmp(f, "IPDST_RND") == 0) | |
1183 | pkt_dev->flags |= F_IPDST_RND; | |
1184 | ||
1185 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1186 | pkt_dev->flags &= ~F_IPDST_RND; | |
1187 | ||
1188 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1189 | pkt_dev->flags |= F_UDPSRC_RND; | |
1190 | ||
1191 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1192 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1193 | ||
1194 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1195 | pkt_dev->flags |= F_UDPDST_RND; | |
1196 | ||
1197 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1198 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1199 | ||
1200 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1201 | pkt_dev->flags |= F_MACSRC_RND; | |
1202 | ||
1203 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1204 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1205 | ||
1206 | else if (strcmp(f, "MACDST_RND") == 0) | |
1207 | pkt_dev->flags |= F_MACDST_RND; | |
1208 | ||
1209 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1210 | pkt_dev->flags &= ~F_MACDST_RND; | |
1211 | ||
ca6549af SW |
1212 | else if (strcmp(f, "MPLS_RND") == 0) |
1213 | pkt_dev->flags |= F_MPLS_RND; | |
1214 | ||
1215 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1216 | pkt_dev->flags &= ~F_MPLS_RND; | |
1217 | ||
34954ddc FF |
1218 | else if (strcmp(f, "VID_RND") == 0) |
1219 | pkt_dev->flags |= F_VID_RND; | |
1220 | ||
1221 | else if (strcmp(f, "!VID_RND") == 0) | |
1222 | pkt_dev->flags &= ~F_VID_RND; | |
1223 | ||
1224 | else if (strcmp(f, "SVID_RND") == 0) | |
1225 | pkt_dev->flags |= F_SVID_RND; | |
1226 | ||
1227 | else if (strcmp(f, "!SVID_RND") == 0) | |
1228 | pkt_dev->flags &= ~F_SVID_RND; | |
1229 | ||
007a531b JHS |
1230 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1231 | pkt_dev->flags |= F_FLOW_SEQ; | |
1232 | ||
45b270f8 RO |
1233 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1234 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1235 | ||
1236 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1237 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1238 | |
1239 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1240 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1241 | ||
1242 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1243 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1244 | #ifdef CONFIG_XFRM |
1245 | else if (strcmp(f, "IPSEC") == 0) | |
1246 | pkt_dev->flags |= F_IPSEC_ON; | |
1247 | #endif | |
1248 | ||
1ca7768c FF |
1249 | else if (strcmp(f, "!IPV6") == 0) |
1250 | pkt_dev->flags &= ~F_IPV6; | |
1251 | ||
e99b99b4 RO |
1252 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1253 | pkt_dev->flags |= F_NODE; | |
1254 | ||
1255 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1256 | pkt_dev->flags &= ~F_NODE; | |
1257 | ||
c26bf4a5 TG |
1258 | else if (strcmp(f, "UDPCSUM") == 0) |
1259 | pkt_dev->flags |= F_UDPCSUM; | |
1260 | ||
1261 | else if (strcmp(f, "!UDPCSUM") == 0) | |
1262 | pkt_dev->flags &= ~F_UDPCSUM; | |
1263 | ||
afb84b62 JDB |
1264 | else if (strcmp(f, "NO_TIMESTAMP") == 0) |
1265 | pkt_dev->flags |= F_NO_TIMESTAMP; | |
1266 | ||
222f1806 LC |
1267 | else { |
1268 | sprintf(pg_result, | |
1269 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1270 | f, | |
1ca7768c | 1271 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
72f8e06f MK |
1272 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " |
1273 | "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " | |
1274 | "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " | |
afb84b62 | 1275 | "NO_TIMESTAMP, " |
72f8e06f MK |
1276 | #ifdef CONFIG_XFRM |
1277 | "IPSEC, " | |
1278 | #endif | |
1279 | "NODE_ALLOC\n"); | |
222f1806 LC |
1280 | return count; |
1281 | } | |
1da177e4 LT |
1282 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1283 | return count; | |
1284 | } | |
1285 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1286 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1287 | if (len < 0) |
222f1806 | 1288 | return len; |
1da177e4 | 1289 | |
222f1806 | 1290 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1291 | return -EFAULT; |
222f1806 LC |
1292 | buf[len] = 0; |
1293 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1294 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1295 | strncpy(pkt_dev->dst_min, buf, len); | |
1296 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1297 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1298 | } | |
1299 | if (debug) | |
f342cda7 | 1300 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1301 | i += len; |
1da177e4 LT |
1302 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1303 | return count; | |
1304 | } | |
1305 | if (!strcmp(name, "dst_max")) { | |
1306 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1307 | if (len < 0) |
222f1806 | 1308 | return len; |
63adc6fb | 1309 | |
1da177e4 | 1310 | |
222f1806 | 1311 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1312 | return -EFAULT; |
1313 | ||
222f1806 LC |
1314 | buf[len] = 0; |
1315 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1316 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1317 | strncpy(pkt_dev->dst_max, buf, len); | |
1318 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1319 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1320 | } | |
1321 | if (debug) | |
f342cda7 | 1322 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1323 | i += len; |
1324 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1325 | return count; | |
1326 | } | |
1327 | if (!strcmp(name, "dst6")) { | |
1328 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1329 | if (len < 0) |
1330 | return len; | |
1da177e4 LT |
1331 | |
1332 | pkt_dev->flags |= F_IPV6; | |
1333 | ||
222f1806 | 1334 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1335 | return -EFAULT; |
222f1806 | 1336 | buf[len] = 0; |
1da177e4 | 1337 | |
c468fb13 | 1338 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1339 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1340 | |
4e3fd7a0 | 1341 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1342 | |
222f1806 | 1343 | if (debug) |
f342cda7 | 1344 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1345 | |
222f1806 | 1346 | i += len; |
1da177e4 LT |
1347 | sprintf(pg_result, "OK: dst6=%s", buf); |
1348 | return count; | |
1349 | } | |
1350 | if (!strcmp(name, "dst6_min")) { | |
1351 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1352 | if (len < 0) |
1353 | return len; | |
1da177e4 LT |
1354 | |
1355 | pkt_dev->flags |= F_IPV6; | |
1356 | ||
222f1806 | 1357 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1358 | return -EFAULT; |
222f1806 | 1359 | buf[len] = 0; |
1da177e4 | 1360 | |
c468fb13 | 1361 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1362 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1363 | |
4e3fd7a0 | 1364 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1365 | if (debug) |
f342cda7 | 1366 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1367 | |
222f1806 | 1368 | i += len; |
1da177e4 LT |
1369 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1370 | return count; | |
1371 | } | |
1372 | if (!strcmp(name, "dst6_max")) { | |
1373 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1374 | if (len < 0) |
1375 | return len; | |
1da177e4 LT |
1376 | |
1377 | pkt_dev->flags |= F_IPV6; | |
1378 | ||
222f1806 | 1379 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1380 | return -EFAULT; |
222f1806 | 1381 | buf[len] = 0; |
1da177e4 | 1382 | |
c468fb13 | 1383 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1384 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1385 | |
222f1806 | 1386 | if (debug) |
f342cda7 | 1387 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1388 | |
222f1806 | 1389 | i += len; |
1da177e4 LT |
1390 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1391 | return count; | |
1392 | } | |
1393 | if (!strcmp(name, "src6")) { | |
1394 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1395 | if (len < 0) |
1396 | return len; | |
1da177e4 LT |
1397 | |
1398 | pkt_dev->flags |= F_IPV6; | |
1399 | ||
222f1806 | 1400 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1401 | return -EFAULT; |
222f1806 | 1402 | buf[len] = 0; |
1da177e4 | 1403 | |
c468fb13 | 1404 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1405 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1406 | |
4e3fd7a0 | 1407 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1408 | |
222f1806 | 1409 | if (debug) |
f342cda7 | 1410 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1411 | |
1412 | i += len; | |
1da177e4 LT |
1413 | sprintf(pg_result, "OK: src6=%s", buf); |
1414 | return count; | |
1415 | } | |
1416 | if (!strcmp(name, "src_min")) { | |
1417 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1418 | if (len < 0) |
222f1806 | 1419 | return len; |
63adc6fb | 1420 | |
222f1806 | 1421 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1422 | return -EFAULT; |
222f1806 LC |
1423 | buf[len] = 0; |
1424 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1425 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1426 | strncpy(pkt_dev->src_min, buf, len); | |
1427 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1428 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1429 | } | |
1430 | if (debug) | |
f342cda7 | 1431 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1432 | i += len; |
1433 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1434 | return count; | |
1435 | } | |
1436 | if (!strcmp(name, "src_max")) { | |
1437 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1438 | if (len < 0) |
222f1806 | 1439 | return len; |
63adc6fb | 1440 | |
222f1806 | 1441 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1442 | return -EFAULT; |
222f1806 LC |
1443 | buf[len] = 0; |
1444 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1445 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1446 | strncpy(pkt_dev->src_max, buf, len); | |
1447 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1448 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1449 | } | |
1450 | if (debug) | |
f342cda7 | 1451 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1452 | i += len; |
1453 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1454 | return count; | |
1455 | } | |
1456 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1457 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1458 | if (len < 0) |
222f1806 | 1459 | return len; |
63adc6fb | 1460 | |
1da177e4 | 1461 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1462 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1463 | return -EFAULT; |
1da177e4 | 1464 | |
4940fc88 AD |
1465 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1466 | return -EINVAL; | |
1da177e4 | 1467 | /* Set up Dest MAC */ |
9ea08b12 | 1468 | ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); |
222f1806 | 1469 | |
4940fc88 | 1470 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1471 | return count; |
1472 | } | |
1473 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1474 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1475 | if (len < 0) |
222f1806 | 1476 | return len; |
63adc6fb | 1477 | |
1da177e4 | 1478 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1479 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1480 | return -EFAULT; |
1da177e4 | 1481 | |
4940fc88 AD |
1482 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1483 | return -EINVAL; | |
ce5d0b47 | 1484 | /* Set up Src MAC */ |
9ea08b12 | 1485 | ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); |
ce5d0b47 | 1486 | |
4940fc88 | 1487 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1488 | return count; |
1489 | } | |
1490 | ||
222f1806 LC |
1491 | if (!strcmp(name, "clear_counters")) { |
1492 | pktgen_clear_counters(pkt_dev); | |
1493 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1494 | return count; | |
1495 | } | |
1da177e4 LT |
1496 | |
1497 | if (!strcmp(name, "flows")) { | |
1498 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1499 | if (len < 0) |
222f1806 | 1500 | return len; |
63adc6fb | 1501 | |
1da177e4 LT |
1502 | i += len; |
1503 | if (value > MAX_CFLOWS) | |
1504 | value = MAX_CFLOWS; | |
1505 | ||
1506 | pkt_dev->cflows = value; | |
1507 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1508 | return count; | |
1509 | } | |
6bae9190 | 1510 | #ifdef CONFIG_XFRM |
de4aee7d FD |
1511 | if (!strcmp(name, "spi")) { |
1512 | len = num_arg(&user_buffer[i], 10, &value); | |
1513 | if (len < 0) | |
1514 | return len; | |
1515 | ||
1516 | i += len; | |
1517 | pkt_dev->spi = value; | |
1518 | sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); | |
1519 | return count; | |
1520 | } | |
6bae9190 | 1521 | #endif |
1da177e4 LT |
1522 | if (!strcmp(name, "flowlen")) { |
1523 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1524 | if (len < 0) |
222f1806 | 1525 | return len; |
63adc6fb | 1526 | |
1da177e4 LT |
1527 | i += len; |
1528 | pkt_dev->lflow = value; | |
1529 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1530 | return count; | |
1531 | } | |
222f1806 | 1532 | |
45b270f8 RO |
1533 | if (!strcmp(name, "queue_map_min")) { |
1534 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1535 | if (len < 0) |
45b270f8 | 1536 | return len; |
63adc6fb | 1537 | |
45b270f8 RO |
1538 | i += len; |
1539 | pkt_dev->queue_map_min = value; | |
1540 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1541 | return count; | |
1542 | } | |
1543 | ||
1544 | if (!strcmp(name, "queue_map_max")) { | |
1545 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1546 | if (len < 0) |
45b270f8 | 1547 | return len; |
63adc6fb | 1548 | |
45b270f8 RO |
1549 | i += len; |
1550 | pkt_dev->queue_map_max = value; | |
1551 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1552 | return count; | |
1553 | } | |
1554 | ||
ca6549af | 1555 | if (!strcmp(name, "mpls")) { |
95c96174 | 1556 | unsigned int n, cnt; |
cfcabdcc | 1557 | |
ca6549af | 1558 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1559 | if (len < 0) |
1560 | return len; | |
ca6549af | 1561 | i += len; |
cfcabdcc | 1562 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1563 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1564 | cnt += sprintf(pg_result + cnt, |
1565 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1566 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1567 | |
1568 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1569 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1570 | pkt_dev->svlan_id = 0xffff; | |
1571 | ||
1572 | if (debug) | |
f342cda7 | 1573 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1574 | } |
1575 | return count; | |
1576 | } | |
1577 | ||
1578 | if (!strcmp(name, "vlan_id")) { | |
1579 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1580 | if (len < 0) |
34954ddc | 1581 | return len; |
63adc6fb | 1582 | |
34954ddc FF |
1583 | i += len; |
1584 | if (value <= 4095) { | |
1585 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1586 | ||
1587 | if (debug) | |
f342cda7 | 1588 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1589 | |
1590 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1591 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1592 | |
1593 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1594 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1595 | } else { | |
1596 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1597 | pkt_dev->svlan_id = 0xffff; | |
1598 | ||
1599 | if (debug) | |
f342cda7 | 1600 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1601 | } |
1602 | return count; | |
1603 | } | |
1604 | ||
1605 | if (!strcmp(name, "vlan_p")) { | |
1606 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1607 | if (len < 0) |
34954ddc | 1608 | return len; |
63adc6fb | 1609 | |
34954ddc FF |
1610 | i += len; |
1611 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1612 | pkt_dev->vlan_p = value; | |
1613 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1614 | } else { | |
1615 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1616 | } | |
1617 | return count; | |
1618 | } | |
1619 | ||
1620 | if (!strcmp(name, "vlan_cfi")) { | |
1621 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1622 | if (len < 0) |
34954ddc | 1623 | return len; |
63adc6fb | 1624 | |
34954ddc FF |
1625 | i += len; |
1626 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1627 | pkt_dev->vlan_cfi = value; | |
1628 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1629 | } else { | |
1630 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1631 | } | |
1632 | return count; | |
1633 | } | |
1634 | ||
1635 | if (!strcmp(name, "svlan_id")) { | |
1636 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1637 | if (len < 0) |
34954ddc | 1638 | return len; |
63adc6fb | 1639 | |
34954ddc FF |
1640 | i += len; |
1641 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1642 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1643 | ||
1644 | if (debug) | |
f342cda7 | 1645 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1646 | |
1647 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1648 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1649 | |
1650 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1651 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1652 | } else { | |
1653 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1654 | pkt_dev->svlan_id = 0xffff; | |
1655 | ||
1656 | if (debug) | |
f342cda7 | 1657 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1658 | } |
1659 | return count; | |
1660 | } | |
1661 | ||
1662 | if (!strcmp(name, "svlan_p")) { | |
1663 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1664 | if (len < 0) |
34954ddc | 1665 | return len; |
63adc6fb | 1666 | |
34954ddc FF |
1667 | i += len; |
1668 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1669 | pkt_dev->svlan_p = value; | |
1670 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1671 | } else { | |
1672 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1673 | } | |
1674 | return count; | |
1675 | } | |
1676 | ||
1677 | if (!strcmp(name, "svlan_cfi")) { | |
1678 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1679 | if (len < 0) |
34954ddc | 1680 | return len; |
63adc6fb | 1681 | |
34954ddc FF |
1682 | i += len; |
1683 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1684 | pkt_dev->svlan_cfi = value; | |
1685 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1686 | } else { | |
1687 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1688 | } | |
ca6549af SW |
1689 | return count; |
1690 | } | |
1691 | ||
1ca7768c FF |
1692 | if (!strcmp(name, "tos")) { |
1693 | __u32 tmp_value = 0; | |
1694 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1695 | if (len < 0) |
1ca7768c | 1696 | return len; |
63adc6fb | 1697 | |
1ca7768c FF |
1698 | i += len; |
1699 | if (len == 2) { | |
1700 | pkt_dev->tos = tmp_value; | |
1701 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1702 | } else { | |
1703 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1704 | } | |
1705 | return count; | |
1706 | } | |
1707 | ||
1708 | if (!strcmp(name, "traffic_class")) { | |
1709 | __u32 tmp_value = 0; | |
1710 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1711 | if (len < 0) |
1ca7768c | 1712 | return len; |
63adc6fb | 1713 | |
1ca7768c FF |
1714 | i += len; |
1715 | if (len == 2) { | |
1716 | pkt_dev->traffic_class = tmp_value; | |
1717 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1718 | } else { | |
1719 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1720 | } | |
1721 | return count; | |
1722 | } | |
1723 | ||
9e50e3ac JF |
1724 | if (!strcmp(name, "skb_priority")) { |
1725 | len = num_arg(&user_buffer[i], 9, &value); | |
1726 | if (len < 0) | |
1727 | return len; | |
1728 | ||
1729 | i += len; | |
1730 | pkt_dev->skb_priority = value; | |
1731 | sprintf(pg_result, "OK: skb_priority=%i", | |
1732 | pkt_dev->skb_priority); | |
1733 | return count; | |
1734 | } | |
1735 | ||
1da177e4 LT |
1736 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1737 | return -EINVAL; | |
1738 | } | |
1739 | ||
d50a6b56 | 1740 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1741 | { |
d9dda78b | 1742 | return single_open(file, pktgen_if_show, PDE_DATA(inode)); |
d50a6b56 | 1743 | } |
1da177e4 | 1744 | |
9a32144e | 1745 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1746 | .owner = THIS_MODULE, |
1747 | .open = pktgen_if_open, | |
1748 | .read = seq_read, | |
1749 | .llseek = seq_lseek, | |
1750 | .write = pktgen_if_write, | |
1751 | .release = single_release, | |
d50a6b56 | 1752 | }; |
1da177e4 | 1753 | |
d50a6b56 SH |
1754 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1755 | { | |
222f1806 | 1756 | struct pktgen_thread *t = seq->private; |
648fda74 | 1757 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1758 | |
1759 | BUG_ON(!t); | |
1da177e4 | 1760 | |
97dc48e2 | 1761 | seq_puts(seq, "Running: "); |
1da177e4 | 1762 | |
8788370a JDB |
1763 | rcu_read_lock(); |
1764 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
222f1806 | 1765 | if (pkt_dev->running) |
593f63b0 | 1766 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1767 | |
97dc48e2 | 1768 | seq_puts(seq, "\nStopped: "); |
222f1806 | 1769 | |
8788370a | 1770 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) |
222f1806 | 1771 | if (!pkt_dev->running) |
593f63b0 | 1772 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1773 | |
1774 | if (t->result[0]) | |
d50a6b56 | 1775 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1776 | else |
97dc48e2 | 1777 | seq_puts(seq, "\nResult: NA\n"); |
1da177e4 | 1778 | |
8788370a | 1779 | rcu_read_unlock(); |
1da177e4 | 1780 | |
d50a6b56 | 1781 | return 0; |
1da177e4 LT |
1782 | } |
1783 | ||
d50a6b56 | 1784 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1785 | const char __user * user_buffer, |
1786 | size_t count, loff_t * offset) | |
1da177e4 | 1787 | { |
8a994a71 | 1788 | struct seq_file *seq = file->private_data; |
222f1806 | 1789 | struct pktgen_thread *t = seq->private; |
d6182223 | 1790 | int i, max, len, ret; |
1da177e4 | 1791 | char name[40]; |
222f1806 | 1792 | char *pg_result; |
d50a6b56 | 1793 | |
1da177e4 | 1794 | if (count < 1) { |
222f1806 | 1795 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1796 | return -EINVAL; |
1797 | } | |
d50a6b56 | 1798 | |
d6182223 PG |
1799 | max = count; |
1800 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1801 | if (len < 0) |
d50a6b56 SH |
1802 | return len; |
1803 | ||
d6182223 | 1804 | i = len; |
d50a6b56 | 1805 | |
1da177e4 LT |
1806 | /* Read variable name */ |
1807 | ||
1808 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1809 | if (len < 0) |
d50a6b56 | 1810 | return len; |
222f1806 | 1811 | |
1da177e4 LT |
1812 | memset(name, 0, sizeof(name)); |
1813 | if (copy_from_user(name, &user_buffer[i], len)) | |
1814 | return -EFAULT; | |
1815 | i += len; | |
d50a6b56 | 1816 | |
222f1806 | 1817 | max = count - i; |
1da177e4 | 1818 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1819 | if (len < 0) |
d50a6b56 SH |
1820 | return len; |
1821 | ||
1da177e4 LT |
1822 | i += len; |
1823 | ||
d50a6b56 | 1824 | if (debug) |
f342cda7 | 1825 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1826 | |
222f1806 | 1827 | if (!t) { |
f9467eae | 1828 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1829 | ret = -EINVAL; |
1830 | goto out; | |
1831 | } | |
1832 | ||
1833 | pg_result = &(t->result[0]); | |
1834 | ||
222f1806 LC |
1835 | if (!strcmp(name, "add_device")) { |
1836 | char f[32]; | |
1837 | memset(f, 0, 32); | |
1da177e4 | 1838 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1839 | if (len < 0) { |
1840 | ret = len; | |
1da177e4 LT |
1841 | goto out; |
1842 | } | |
222f1806 | 1843 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1844 | return -EFAULT; |
1845 | i += len; | |
6146e6a4 | 1846 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1847 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1848 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1849 | if (!ret) { |
1850 | ret = count; | |
1851 | sprintf(pg_result, "OK: add_device=%s", f); | |
1852 | } else | |
1853 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1854 | goto out; |
1855 | } | |
1856 | ||
222f1806 | 1857 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1858 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1859 | t->control |= T_REMDEVALL; |
6146e6a4 | 1860 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1861 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1862 | ret = count; |
222f1806 | 1863 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1864 | goto out; |
1865 | } | |
1866 | ||
222f1806 | 1867 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1868 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1869 | ret = count; |
1da177e4 LT |
1870 | goto out; |
1871 | } | |
1872 | ||
1873 | ret = -EINVAL; | |
222f1806 | 1874 | out: |
1da177e4 LT |
1875 | return ret; |
1876 | } | |
1877 | ||
d50a6b56 | 1878 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1879 | { |
d9dda78b | 1880 | return single_open(file, pktgen_thread_show, PDE_DATA(inode)); |
1da177e4 LT |
1881 | } |
1882 | ||
9a32144e | 1883 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1884 | .owner = THIS_MODULE, |
1885 | .open = pktgen_thread_open, | |
1886 | .read = seq_read, | |
1887 | .llseek = seq_lseek, | |
1888 | .write = pktgen_thread_write, | |
1889 | .release = single_release, | |
d50a6b56 | 1890 | }; |
1da177e4 LT |
1891 | |
1892 | /* Think find or remove for NN */ | |
4e58a027 CW |
1893 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1894 | const char *ifname, int remove) | |
1da177e4 LT |
1895 | { |
1896 | struct pktgen_thread *t; | |
1897 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1898 | bool exact = (remove == FIND); |
1da177e4 | 1899 | |
4e58a027 | 1900 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1901 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1902 | if (pkt_dev) { |
222f1806 | 1903 | if (remove) { |
222f1806 LC |
1904 | pkt_dev->removal_mark = 1; |
1905 | t->control |= T_REMDEV; | |
222f1806 | 1906 | } |
1da177e4 LT |
1907 | break; |
1908 | } | |
1da177e4 | 1909 | } |
222f1806 | 1910 | return pkt_dev; |
1da177e4 LT |
1911 | } |
1912 | ||
95ed63f7 AK |
1913 | /* |
1914 | * mark a device for removal | |
1915 | */ | |
4e58a027 | 1916 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1917 | { |
1918 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1919 | const int max_tries = 10, msec_per_try = 125; |
1920 | int i = 0; | |
95ed63f7 | 1921 | |
6146e6a4 | 1922 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1923 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1924 | |
222f1806 | 1925 | while (1) { |
95ed63f7 | 1926 | |
4e58a027 | 1927 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1928 | if (pkt_dev == NULL) |
1929 | break; /* success */ | |
95ed63f7 | 1930 | |
6146e6a4 | 1931 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1932 | pr_debug("%s: waiting for %s to disappear....\n", |
1933 | __func__, ifname); | |
95ed63f7 | 1934 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1935 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1936 | |
1937 | if (++i >= max_tries) { | |
f9467eae JP |
1938 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1939 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1940 | break; |
1941 | } | |
1942 | ||
1943 | } | |
1944 | ||
6146e6a4 | 1945 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1946 | } |
95ed63f7 | 1947 | |
4e58a027 | 1948 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
1949 | { |
1950 | struct pktgen_thread *t; | |
1951 | ||
4e58a027 | 1952 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
1953 | struct pktgen_dev *pkt_dev; |
1954 | ||
8788370a JDB |
1955 | rcu_read_lock(); |
1956 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
39df232f SH |
1957 | if (pkt_dev->odev != dev) |
1958 | continue; | |
1959 | ||
a8ca16ea | 1960 | proc_remove(pkt_dev->entry); |
39df232f | 1961 | |
2975315b | 1962 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 1963 | pn->proc_dir, |
2975315b AD |
1964 | &pktgen_if_fops, |
1965 | pkt_dev); | |
39df232f | 1966 | if (!pkt_dev->entry) |
f9467eae JP |
1967 | pr_err("can't move proc entry for '%s'\n", |
1968 | dev->name); | |
39df232f SH |
1969 | break; |
1970 | } | |
8788370a | 1971 | rcu_read_unlock(); |
39df232f | 1972 | } |
1da177e4 LT |
1973 | } |
1974 | ||
222f1806 LC |
1975 | static int pktgen_device_event(struct notifier_block *unused, |
1976 | unsigned long event, void *ptr) | |
1da177e4 | 1977 | { |
351638e7 | 1978 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
4e58a027 | 1979 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 1980 | |
4e58a027 | 1981 | if (pn->pktgen_exiting) |
e9dc8653 EB |
1982 | return NOTIFY_DONE; |
1983 | ||
1da177e4 LT |
1984 | /* It is OK that we do not hold the group lock right now, |
1985 | * as we run under the RTNL lock. | |
1986 | */ | |
1987 | ||
1988 | switch (event) { | |
39df232f | 1989 | case NETDEV_CHANGENAME: |
4e58a027 | 1990 | pktgen_change_name(pn, dev); |
1da177e4 | 1991 | break; |
222f1806 | 1992 | |
1da177e4 | 1993 | case NETDEV_UNREGISTER: |
4e58a027 | 1994 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 1995 | break; |
3ff50b79 | 1996 | } |
1da177e4 LT |
1997 | |
1998 | return NOTIFY_DONE; | |
1999 | } | |
2000 | ||
4e58a027 CW |
2001 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
2002 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 2003 | const char *ifname) |
e6fce5b9 RO |
2004 | { |
2005 | char b[IFNAMSIZ+5]; | |
d6182223 | 2006 | int i; |
e6fce5b9 | 2007 | |
63adc6fb SH |
2008 | for (i = 0; ifname[i] != '@'; i++) { |
2009 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
2010 | break; |
2011 | ||
2012 | b[i] = ifname[i]; | |
2013 | } | |
2014 | b[i] = 0; | |
2015 | ||
4e58a027 | 2016 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
2017 | } |
2018 | ||
2019 | ||
1da177e4 LT |
2020 | /* Associate pktgen_dev with a device. */ |
2021 | ||
4e58a027 CW |
2022 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
2023 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 2024 | { |
1da177e4 | 2025 | struct net_device *odev; |
39df232f | 2026 | int err; |
1da177e4 LT |
2027 | |
2028 | /* Clean old setups */ | |
1da177e4 LT |
2029 | if (pkt_dev->odev) { |
2030 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2031 | pkt_dev->odev = NULL; |
2032 | } | |
1da177e4 | 2033 | |
4e58a027 | 2034 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 2035 | if (!odev) { |
f9467eae | 2036 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2037 | return -ENODEV; |
1da177e4 | 2038 | } |
39df232f | 2039 | |
1da177e4 | 2040 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2041 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2042 | err = -EINVAL; |
2043 | } else if (!netif_running(odev)) { | |
f9467eae | 2044 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2045 | err = -ENETDOWN; |
2046 | } else { | |
2047 | pkt_dev->odev = odev; | |
2048 | return 0; | |
1da177e4 | 2049 | } |
1da177e4 | 2050 | |
1da177e4 | 2051 | dev_put(odev); |
39df232f | 2052 | return err; |
1da177e4 LT |
2053 | } |
2054 | ||
2055 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2056 | * structure to have the right information to create/send packets | |
2057 | */ | |
2058 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2059 | { | |
64c00d81 AG |
2060 | int ntxq; |
2061 | ||
222f1806 | 2062 | if (!pkt_dev->odev) { |
f9467eae | 2063 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2064 | sprintf(pkt_dev->result, |
2065 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2066 | return; | |
2067 | } | |
2068 | ||
64c00d81 AG |
2069 | /* make sure that we don't pick a non-existing transmit queue */ |
2070 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2071 | |
64c00d81 | 2072 | if (ntxq <= pkt_dev->queue_map_min) { |
294a0b7f JP |
2073 | pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2074 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2075 | pkt_dev->odevname); | |
26e29eed | 2076 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2077 | } |
88271660 | 2078 | if (pkt_dev->queue_map_max >= ntxq) { |
294a0b7f JP |
2079 | pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2080 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2081 | pkt_dev->odevname); | |
26e29eed | 2082 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2083 | } |
2084 | ||
222f1806 | 2085 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2086 | |
f404e9a6 | 2087 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
9ea08b12 | 2088 | ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); |
1da177e4 | 2089 | |
222f1806 | 2090 | /* Set up Dest MAC */ |
9ea08b12 | 2091 | ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); |
1da177e4 | 2092 | |
222f1806 | 2093 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2094 | int i, set = 0, err = 1; |
2095 | struct inet6_dev *idev; | |
2096 | ||
68bf9f0b AW |
2097 | if (pkt_dev->min_pkt_size == 0) { |
2098 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2099 | + sizeof(struct udphdr) | |
2100 | + sizeof(struct pktgen_hdr) | |
2101 | + pkt_dev->pkt_overhead; | |
2102 | } | |
2103 | ||
222f1806 LC |
2104 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2105 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2106 | set = 1; |
2107 | break; | |
2108 | } | |
2109 | ||
222f1806 LC |
2110 | if (!set) { |
2111 | ||
1da177e4 LT |
2112 | /* |
2113 | * Use linklevel address if unconfigured. | |
2114 | * | |
2115 | * use ipv6_get_lladdr if/when it's get exported | |
2116 | */ | |
2117 | ||
8814c4b5 | 2118 | rcu_read_lock(); |
63adc6fb SH |
2119 | idev = __in6_dev_get(pkt_dev->odev); |
2120 | if (idev) { | |
1da177e4 LT |
2121 | struct inet6_ifaddr *ifp; |
2122 | ||
2123 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2124 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2125 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2126 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2127 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2128 | err = 0; |
2129 | break; | |
2130 | } | |
2131 | } | |
2132 | read_unlock_bh(&idev->lock); | |
2133 | } | |
8814c4b5 | 2134 | rcu_read_unlock(); |
222f1806 | 2135 | if (err) |
f9467eae | 2136 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2137 | } |
222f1806 | 2138 | } else { |
68bf9f0b AW |
2139 | if (pkt_dev->min_pkt_size == 0) { |
2140 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2141 | + sizeof(struct udphdr) | |
2142 | + sizeof(struct pktgen_hdr) | |
2143 | + pkt_dev->pkt_overhead; | |
2144 | } | |
2145 | ||
1da177e4 LT |
2146 | pkt_dev->saddr_min = 0; |
2147 | pkt_dev->saddr_max = 0; | |
2148 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2149 | |
2150 | struct in_device *in_dev; | |
1da177e4 LT |
2151 | |
2152 | rcu_read_lock(); | |
e5ed6399 | 2153 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2154 | if (in_dev) { |
2155 | if (in_dev->ifa_list) { | |
222f1806 LC |
2156 | pkt_dev->saddr_min = |
2157 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2158 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2159 | } | |
1da177e4 LT |
2160 | } |
2161 | rcu_read_unlock(); | |
222f1806 | 2162 | } else { |
1da177e4 LT |
2163 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2164 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2165 | } | |
2166 | ||
2167 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2168 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2169 | } | |
222f1806 | 2170 | /* Initialize current values. */ |
68bf9f0b AW |
2171 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2172 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2173 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2174 | ||
222f1806 LC |
2175 | pkt_dev->cur_dst_mac_offset = 0; |
2176 | pkt_dev->cur_src_mac_offset = 0; | |
2177 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2178 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2179 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2180 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2181 | pkt_dev->nflows = 0; |
2182 | } | |
2183 | ||
fd29cf72 SH |
2184 | |
2185 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2186 | { | |
ef87979c | 2187 | ktime_t start_time, end_time; |
417bc4b8 | 2188 | s64 remaining; |
2bc481cf SH |
2189 | struct hrtimer_sleeper t; |
2190 | ||
2191 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2192 | hrtimer_set_expires(&t.timer, spin_until); | |
2193 | ||
43d28b65 | 2194 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2195 | if (remaining <= 0) { |
2196 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2197 | return; |
417bc4b8 | 2198 | } |
2bc481cf | 2199 | |
398f382c | 2200 | start_time = ktime_get(); |
33136d12 ED |
2201 | if (remaining < 100000) { |
2202 | /* for small delays (<100us), just loop until limit is reached */ | |
2203 | do { | |
398f382c DB |
2204 | end_time = ktime_get(); |
2205 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2206 | } else { |
2bc481cf SH |
2207 | /* see do_nanosleep */ |
2208 | hrtimer_init_sleeper(&t, current); | |
2209 | do { | |
2210 | set_current_state(TASK_INTERRUPTIBLE); | |
2211 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2212 | if (!hrtimer_active(&t.timer)) | |
2213 | t.task = NULL; | |
2214 | ||
2215 | if (likely(t.task)) | |
1da177e4 | 2216 | schedule(); |
1da177e4 | 2217 | |
2bc481cf SH |
2218 | hrtimer_cancel(&t.timer); |
2219 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2220 | __set_current_state(TASK_RUNNING); | |
398f382c | 2221 | end_time = ktime_get(); |
1da177e4 | 2222 | } |
ef87979c SH |
2223 | |
2224 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2225 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2226 | } |
2227 | ||
16dab72f JHS |
2228 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2229 | { | |
a553e4a6 | 2230 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2231 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2232 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2233 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2234 | } | |
2235 | ||
648fda74 | 2236 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2237 | { |
648fda74 | 2238 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2239 | } |
2240 | ||
2241 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2242 | { | |
2243 | int flow = pkt_dev->curfl; | |
2244 | ||
2245 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2246 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2247 | /* reset time */ | |
2248 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2249 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2250 | pkt_dev->curfl += 1; |
2251 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2252 | pkt_dev->curfl = 0; /*reset */ | |
2253 | } | |
2254 | } else { | |
33d7c5e5 | 2255 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2256 | pkt_dev->curfl = flow; |
007a531b | 2257 | |
1211a645 | 2258 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2259 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2260 | pkt_dev->flows[flow].flags = 0; |
2261 | } | |
007a531b JHS |
2262 | } |
2263 | ||
2264 | return pkt_dev->curfl; | |
2265 | } | |
2266 | ||
a553e4a6 JHS |
2267 | |
2268 | #ifdef CONFIG_XFRM | |
2269 | /* If there was already an IPSEC SA, we keep it as is, else | |
2270 | * we go look for it ... | |
2271 | */ | |
bd55775c | 2272 | #define DUMMY_MARK 0 |
fea1ab0f | 2273 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2274 | { |
2275 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2276 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 | 2277 | if (!x) { |
c454997e FD |
2278 | |
2279 | if (pkt_dev->spi) { | |
2280 | /* We need as quick as possible to find the right SA | |
2281 | * Searching with minimum criteria to archieve this. | |
2282 | */ | |
2283 | x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); | |
2284 | } else { | |
2285 | /* slow path: we dont already have xfrm_state */ | |
2286 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, | |
2287 | (xfrm_address_t *)&pkt_dev->cur_daddr, | |
2288 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2289 | AF_INET, | |
2290 | pkt_dev->ipsmode, | |
2291 | pkt_dev->ipsproto, 0); | |
2292 | } | |
a553e4a6 JHS |
2293 | if (x) { |
2294 | pkt_dev->flows[flow].x = x; | |
2295 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2296 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2297 | } |
2298 | ||
2299 | } | |
2300 | } | |
2301 | #endif | |
fd2ea0a7 DM |
2302 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2303 | { | |
e6fce5b9 RO |
2304 | |
2305 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2306 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2307 | ||
896a7cf8 | 2308 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2309 | __u16 t; |
2310 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2311 | t = prandom_u32() % |
fd2ea0a7 DM |
2312 | (pkt_dev->queue_map_max - |
2313 | pkt_dev->queue_map_min + 1) | |
2314 | + pkt_dev->queue_map_min; | |
2315 | } else { | |
2316 | t = pkt_dev->cur_queue_map + 1; | |
2317 | if (t > pkt_dev->queue_map_max) | |
2318 | t = pkt_dev->queue_map_min; | |
2319 | } | |
2320 | pkt_dev->cur_queue_map = t; | |
2321 | } | |
bfdbc0ac | 2322 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2323 | } |
2324 | ||
1da177e4 LT |
2325 | /* Increment/randomize headers according to flags and current values |
2326 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2327 | */ | |
222f1806 LC |
2328 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2329 | { | |
2330 | __u32 imn; | |
2331 | __u32 imx; | |
2332 | int flow = 0; | |
1da177e4 | 2333 | |
007a531b JHS |
2334 | if (pkt_dev->cflows) |
2335 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2336 | |
2337 | /* Deal with source MAC */ | |
222f1806 LC |
2338 | if (pkt_dev->src_mac_count > 1) { |
2339 | __u32 mc; | |
2340 | __u32 tmp; | |
2341 | ||
2342 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2343 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2344 | else { |
2345 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2346 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2347 | pkt_dev->src_mac_count) |
2348 | pkt_dev->cur_src_mac_offset = 0; | |
2349 | } | |
2350 | ||
2351 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2352 | pkt_dev->hh[11] = tmp; | |
2353 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2354 | pkt_dev->hh[10] = tmp; | |
2355 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2356 | pkt_dev->hh[9] = tmp; | |
2357 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2358 | pkt_dev->hh[8] = tmp; | |
2359 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2360 | pkt_dev->hh[7] = tmp; | |
2361 | } | |
2362 | ||
2363 | /* Deal with Destination MAC */ | |
2364 | if (pkt_dev->dst_mac_count > 1) { | |
2365 | __u32 mc; | |
2366 | __u32 tmp; | |
2367 | ||
2368 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2369 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2370 | |
2371 | else { | |
2372 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2373 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2374 | pkt_dev->dst_mac_count) { |
2375 | pkt_dev->cur_dst_mac_offset = 0; | |
2376 | } | |
2377 | } | |
2378 | ||
2379 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2380 | pkt_dev->hh[5] = tmp; | |
2381 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2382 | pkt_dev->hh[4] = tmp; | |
2383 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2384 | pkt_dev->hh[3] = tmp; | |
2385 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2386 | pkt_dev->hh[2] = tmp; | |
2387 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2388 | pkt_dev->hh[1] = tmp; | |
2389 | } | |
2390 | ||
ca6549af | 2391 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2392 | unsigned int i; |
e71a4783 | 2393 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2394 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2395 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2396 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2397 | htonl(0x000fffff)); |
2398 | } | |
2399 | ||
34954ddc | 2400 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2401 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2402 | } |
2403 | ||
2404 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2405 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2406 | } |
2407 | ||
222f1806 LC |
2408 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2409 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2410 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2411 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2412 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2413 | |
2414 | else { | |
1da177e4 LT |
2415 | pkt_dev->cur_udp_src++; |
2416 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2417 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2418 | } |
2419 | } | |
2420 | ||
2421 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2422 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2423 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2424 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2425 | + pkt_dev->udp_dst_min; | |
222f1806 | 2426 | } else { |
1da177e4 | 2427 | pkt_dev->cur_udp_dst++; |
222f1806 | 2428 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2429 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2430 | } |
2431 | } | |
1da177e4 LT |
2432 | |
2433 | if (!(pkt_dev->flags & F_IPV6)) { | |
2434 | ||
63adc6fb SH |
2435 | imn = ntohl(pkt_dev->saddr_min); |
2436 | imx = ntohl(pkt_dev->saddr_max); | |
2437 | if (imn < imx) { | |
1da177e4 | 2438 | __u32 t; |
222f1806 | 2439 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2440 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2441 | else { |
2442 | t = ntohl(pkt_dev->cur_saddr); | |
2443 | t++; | |
63adc6fb | 2444 | if (t > imx) |
1da177e4 | 2445 | t = imn; |
63adc6fb | 2446 | |
1da177e4 LT |
2447 | } |
2448 | pkt_dev->cur_saddr = htonl(t); | |
2449 | } | |
222f1806 | 2450 | |
007a531b | 2451 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2452 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2453 | } else { | |
252e3346 AV |
2454 | imn = ntohl(pkt_dev->daddr_min); |
2455 | imx = ntohl(pkt_dev->daddr_max); | |
2456 | if (imn < imx) { | |
1da177e4 | 2457 | __u32 t; |
252e3346 | 2458 | __be32 s; |
1da177e4 LT |
2459 | if (pkt_dev->flags & F_IPDST_RND) { |
2460 | ||
70e3ba72 | 2461 | do { |
33d7c5e5 AM |
2462 | t = prandom_u32() % |
2463 | (imx - imn) + imn; | |
252e3346 | 2464 | s = htonl(t); |
70e3ba72 AM |
2465 | } while (ipv4_is_loopback(s) || |
2466 | ipv4_is_multicast(s) || | |
2467 | ipv4_is_lbcast(s) || | |
2468 | ipv4_is_zeronet(s) || | |
2469 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2470 | pkt_dev->cur_daddr = s; |
2471 | } else { | |
1da177e4 LT |
2472 | t = ntohl(pkt_dev->cur_daddr); |
2473 | t++; | |
2474 | if (t > imx) { | |
2475 | t = imn; | |
2476 | } | |
2477 | pkt_dev->cur_daddr = htonl(t); | |
2478 | } | |
2479 | } | |
222f1806 | 2480 | if (pkt_dev->cflows) { |
007a531b | 2481 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2482 | pkt_dev->flows[flow].cur_daddr = |
2483 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2484 | #ifdef CONFIG_XFRM |
2485 | if (pkt_dev->flags & F_IPSEC_ON) | |
2486 | get_ipsec_sa(pkt_dev, flow); | |
2487 | #endif | |
1da177e4 LT |
2488 | pkt_dev->nflows++; |
2489 | } | |
2490 | } | |
222f1806 LC |
2491 | } else { /* IPV6 * */ |
2492 | ||
06e30411 | 2493 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2494 | int i; |
2495 | ||
2496 | /* Only random destinations yet */ | |
2497 | ||
222f1806 | 2498 | for (i = 0; i < 4; i++) { |
1da177e4 | 2499 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2500 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2501 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2502 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2503 | } |
222f1806 | 2504 | } |
1da177e4 LT |
2505 | } |
2506 | ||
222f1806 LC |
2507 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2508 | __u32 t; | |
2509 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2510 | t = prandom_u32() % |
5fa6fc76 SH |
2511 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2512 | + pkt_dev->min_pkt_size; | |
222f1806 | 2513 | } else { |
1da177e4 | 2514 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2515 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2516 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2517 | } |
2518 | pkt_dev->cur_pkt_size = t; | |
2519 | } | |
1da177e4 | 2520 | |
fd2ea0a7 | 2521 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2522 | |
1da177e4 LT |
2523 | pkt_dev->flows[flow].count++; |
2524 | } | |
2525 | ||
a553e4a6 JHS |
2526 | |
2527 | #ifdef CONFIG_XFRM | |
5537a055 | 2528 | static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { |
cf93d47e FD |
2529 | |
2530 | [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ | |
2531 | }; | |
2532 | ||
a553e4a6 JHS |
2533 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) |
2534 | { | |
2535 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2536 | int err = 0; | |
6de9ace4 | 2537 | struct net *net = dev_net(pkt_dev->odev); |
a553e4a6 JHS |
2538 | |
2539 | if (!x) | |
2540 | return 0; | |
2541 | /* XXX: we dont support tunnel mode for now until | |
2542 | * we resolve the dst issue */ | |
cf93d47e | 2543 | if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) |
a553e4a6 JHS |
2544 | return 0; |
2545 | ||
cf93d47e FD |
2546 | /* But when user specify an valid SPI, transformation |
2547 | * supports both transport/tunnel mode + ESP/AH type. | |
2548 | */ | |
2549 | if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) | |
2550 | skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF; | |
2551 | ||
2552 | rcu_read_lock_bh(); | |
13996378 | 2553 | err = x->outer_mode->output(x, skb); |
cf93d47e | 2554 | rcu_read_unlock_bh(); |
6de9ace4 FD |
2555 | if (err) { |
2556 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); | |
a553e4a6 | 2557 | goto error; |
6de9ace4 | 2558 | } |
a553e4a6 | 2559 | err = x->type->output(x, skb); |
6de9ace4 FD |
2560 | if (err) { |
2561 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); | |
a553e4a6 | 2562 | goto error; |
6de9ace4 | 2563 | } |
0af0a413 | 2564 | spin_lock_bh(&x->lock); |
63adc6fb | 2565 | x->curlft.bytes += skb->len; |
a553e4a6 | 2566 | x->curlft.packets++; |
0af0a413 | 2567 | spin_unlock_bh(&x->lock); |
a553e4a6 | 2568 | error: |
a553e4a6 JHS |
2569 | return err; |
2570 | } | |
2571 | ||
475ac1e4 | 2572 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2573 | { |
2574 | if (pkt_dev->cflows) { | |
2575 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2576 | int i; |
2577 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2578 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2579 | if (x) { | |
2580 | xfrm_state_put(x); | |
2581 | pkt_dev->flows[i].x = NULL; | |
2582 | } | |
2583 | } | |
2584 | } | |
2585 | } | |
2586 | ||
475ac1e4 | 2587 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2588 | struct sk_buff *skb, __be16 protocol) |
2589 | { | |
2590 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2591 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2592 | int nhead = 0; | |
2593 | if (x) { | |
2594 | int ret; | |
2595 | __u8 *eth; | |
3868204d | 2596 | struct iphdr *iph; |
2597 | ||
a553e4a6 | 2598 | nhead = x->props.header_len - skb_headroom(skb); |
63adc6fb | 2599 | if (nhead > 0) { |
a553e4a6 JHS |
2600 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2601 | if (ret < 0) { | |
f9467eae JP |
2602 | pr_err("Error expanding ipsec packet %d\n", |
2603 | ret); | |
b4bb4ac8 | 2604 | goto err; |
a553e4a6 JHS |
2605 | } |
2606 | } | |
2607 | ||
2608 | /* ipsec is not expecting ll header */ | |
2609 | skb_pull(skb, ETH_HLEN); | |
2610 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2611 | if (ret) { | |
f9467eae | 2612 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2613 | goto err; |
a553e4a6 JHS |
2614 | } |
2615 | /* restore ll */ | |
2616 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2617 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2618 | *(u16 *) ð[12] = protocol; |
3868204d | 2619 | |
2620 | /* Update IPv4 header len as well as checksum value */ | |
2621 | iph = ip_hdr(skb); | |
2622 | iph->tot_len = htons(skb->len - ETH_HLEN); | |
2623 | ip_send_check(iph); | |
a553e4a6 JHS |
2624 | } |
2625 | } | |
2626 | return 1; | |
b4bb4ac8 IJ |
2627 | err: |
2628 | kfree_skb(skb); | |
2629 | return 0; | |
a553e4a6 JHS |
2630 | } |
2631 | #endif | |
2632 | ||
ca6549af SW |
2633 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2634 | { | |
95c96174 | 2635 | unsigned int i; |
63adc6fb | 2636 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2637 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2638 | |
ca6549af SW |
2639 | mpls--; |
2640 | *mpls |= MPLS_STACK_BOTTOM; | |
2641 | } | |
2642 | ||
0f37c605 AV |
2643 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2644 | unsigned int prio) | |
2645 | { | |
2646 | return htons(id | (cfi << 12) | (prio << 13)); | |
2647 | } | |
2648 | ||
26ad7879 ED |
2649 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2650 | int datalen) | |
2651 | { | |
2652 | struct timeval timestamp; | |
2653 | struct pktgen_hdr *pgh; | |
2654 | ||
2655 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2656 | datalen -= sizeof(*pgh); | |
2657 | ||
2658 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2659 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2660 | } else { |
2661 | int frags = pkt_dev->nfrags; | |
2662 | int i, len; | |
7d36a991 | 2663 | int frag_len; |
26ad7879 ED |
2664 | |
2665 | ||
2666 | if (frags > MAX_SKB_FRAGS) | |
2667 | frags = MAX_SKB_FRAGS; | |
2668 | len = datalen - frags * PAGE_SIZE; | |
2669 | if (len > 0) { | |
2670 | memset(skb_put(skb, len), 0, len); | |
2671 | datalen = frags * PAGE_SIZE; | |
2672 | } | |
2673 | ||
2674 | i = 0; | |
7d36a991 | 2675 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2676 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2677 | while (datalen > 0) { |
2678 | if (unlikely(!pkt_dev->page)) { | |
2679 | int node = numa_node_id(); | |
2680 | ||
2681 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2682 | node = pkt_dev->node; | |
2683 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2684 | if (!pkt_dev->page) | |
2685 | break; | |
2686 | } | |
a0bec1cd | 2687 | get_page(pkt_dev->page); |
ea2ab693 | 2688 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2689 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2690 | /*last fragment, fill rest of data*/ |
2691 | if (i == (frags - 1)) | |
9e903e08 ED |
2692 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2693 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2694 | else |
9e903e08 ED |
2695 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2696 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2697 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2698 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2699 | i++; |
2700 | skb_shinfo(skb)->nr_frags = i; | |
2701 | } | |
26ad7879 ED |
2702 | } |
2703 | ||
2704 | /* Stamp the time, and sequence number, | |
2705 | * convert them to network byte order | |
2706 | */ | |
2707 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2708 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2709 | ||
afb84b62 JDB |
2710 | if (pkt_dev->flags & F_NO_TIMESTAMP) { |
2711 | pgh->tv_sec = 0; | |
2712 | pgh->tv_usec = 0; | |
2713 | } else { | |
2714 | do_gettimeofday(×tamp); | |
2715 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2716 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2717 | } | |
26ad7879 ED |
2718 | } |
2719 | ||
7a6e288d DB |
2720 | static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, |
2721 | struct pktgen_dev *pkt_dev, | |
2722 | unsigned int extralen) | |
2723 | { | |
2724 | struct sk_buff *skb = NULL; | |
2725 | unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen + | |
2726 | pkt_dev->pkt_overhead; | |
2727 | ||
2728 | if (pkt_dev->flags & F_NODE) { | |
2729 | int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); | |
2730 | ||
2731 | skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); | |
2732 | if (likely(skb)) { | |
2733 | skb_reserve(skb, NET_SKB_PAD); | |
2734 | skb->dev = dev; | |
2735 | } | |
2736 | } else { | |
2737 | skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); | |
2738 | } | |
2739 | ||
2740 | return skb; | |
2741 | } | |
2742 | ||
222f1806 LC |
2743 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2744 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2745 | { |
2746 | struct sk_buff *skb = NULL; | |
2747 | __u8 *eth; | |
2748 | struct udphdr *udph; | |
2749 | int datalen, iplen; | |
2750 | struct iphdr *iph; | |
d5f1ce9a | 2751 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2752 | __be32 *mpls; |
34954ddc FF |
2753 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2754 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2755 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2756 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2757 | u16 queue_map; |
ca6549af SW |
2758 | |
2759 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2760 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2761 | |
34954ddc | 2762 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2763 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2764 | |
64053bee RO |
2765 | /* Update any of the values, used when we're incrementing various |
2766 | * fields. | |
2767 | */ | |
2768 | mod_cur_headers(pkt_dev); | |
eb589063 | 2769 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2770 | |
7ac5459e | 2771 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 | 2772 | |
7a6e288d | 2773 | skb = pktgen_alloc_skb(odev, pkt_dev, datalen); |
1da177e4 LT |
2774 | if (!skb) { |
2775 | sprintf(pkt_dev->result, "No memory"); | |
2776 | return NULL; | |
2777 | } | |
2778 | ||
7a6e288d | 2779 | prefetchw(skb->data); |
7ac5459e | 2780 | skb_reserve(skb, datalen); |
1da177e4 LT |
2781 | |
2782 | /* Reserve for ethernet and IP header */ | |
2783 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2784 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2785 | if (pkt_dev->nr_labels) | |
2786 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2787 | |
2788 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2789 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2790 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2791 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2792 | pkt_dev->svlan_cfi, | |
2793 | pkt_dev->svlan_p); | |
34954ddc | 2794 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2795 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2796 | } |
2797 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2798 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2799 | pkt_dev->vlan_cfi, | |
2800 | pkt_dev->vlan_p); | |
34954ddc | 2801 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2802 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2803 | } |
2804 | ||
525cebed TG |
2805 | skb_set_mac_header(skb, 0); |
2806 | skb_set_network_header(skb, skb->len); | |
2807 | iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr)); | |
2808 | ||
2809 | skb_set_transport_header(skb, skb->len); | |
2810 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2811 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2812 | skb->priority = pkt_dev->skb_priority; |
2813 | ||
1da177e4 | 2814 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2815 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2816 | |
ca6549af SW |
2817 | /* Eth + IPh + UDPh + mpls */ |
2818 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2819 | pkt_dev->pkt_overhead; |
6af773e7 | 2820 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2821 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2822 | |
1da177e4 LT |
2823 | udph->source = htons(pkt_dev->cur_udp_src); |
2824 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 | 2825 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
c26bf4a5 | 2826 | udph->check = 0; |
1da177e4 LT |
2827 | |
2828 | iph->ihl = 5; | |
2829 | iph->version = 4; | |
2830 | iph->ttl = 32; | |
1ca7768c | 2831 | iph->tos = pkt_dev->tos; |
222f1806 | 2832 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2833 | iph->saddr = pkt_dev->cur_saddr; |
2834 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2835 | iph->id = htons(pkt_dev->ip_id); |
2836 | pkt_dev->ip_id++; | |
1da177e4 LT |
2837 | iph->frag_off = 0; |
2838 | iplen = 20 + 8 + datalen; | |
2839 | iph->tot_len = htons(iplen); | |
03c633e7 | 2840 | ip_send_check(iph); |
ca6549af | 2841 | skb->protocol = protocol; |
1da177e4 LT |
2842 | skb->dev = odev; |
2843 | skb->pkt_type = PACKET_HOST; | |
c26bf4a5 | 2844 | |
7744b5f3 SD |
2845 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2846 | ||
c26bf4a5 TG |
2847 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2848 | skb->ip_summed = CHECKSUM_NONE; | |
2849 | } else if (odev->features & NETIF_F_V4_CSUM) { | |
2850 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2851 | skb->csum = 0; | |
7744b5f3 | 2852 | udp4_hwcsum(skb, iph->saddr, iph->daddr); |
c26bf4a5 | 2853 | } else { |
7744b5f3 | 2854 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0); |
c26bf4a5 TG |
2855 | |
2856 | /* add protocol-dependent pseudo-header */ | |
7744b5f3 | 2857 | udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, |
c26bf4a5 TG |
2858 | datalen + 8, IPPROTO_UDP, csum); |
2859 | ||
2860 | if (udph->check == 0) | |
2861 | udph->check = CSUM_MANGLED_0; | |
2862 | } | |
2863 | ||
a553e4a6 JHS |
2864 | #ifdef CONFIG_XFRM |
2865 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2866 | return NULL; | |
2867 | #endif | |
2868 | ||
1da177e4 LT |
2869 | return skb; |
2870 | } | |
2871 | ||
222f1806 LC |
2872 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2873 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2874 | { |
2875 | struct sk_buff *skb = NULL; | |
2876 | __u8 *eth; | |
2877 | struct udphdr *udph; | |
c26bf4a5 | 2878 | int datalen, udplen; |
1da177e4 | 2879 | struct ipv6hdr *iph; |
d5f1ce9a | 2880 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2881 | __be32 *mpls; |
34954ddc FF |
2882 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2883 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2884 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2885 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2886 | u16 queue_map; |
ca6549af SW |
2887 | |
2888 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2889 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2890 | |
34954ddc | 2891 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2892 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2893 | |
64053bee RO |
2894 | /* Update any of the values, used when we're incrementing various |
2895 | * fields. | |
2896 | */ | |
2897 | mod_cur_headers(pkt_dev); | |
eb589063 | 2898 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2899 | |
7a6e288d | 2900 | skb = pktgen_alloc_skb(odev, pkt_dev, 16); |
1da177e4 LT |
2901 | if (!skb) { |
2902 | sprintf(pkt_dev->result, "No memory"); | |
2903 | return NULL; | |
2904 | } | |
2905 | ||
7a6e288d | 2906 | prefetchw(skb->data); |
1da177e4 LT |
2907 | skb_reserve(skb, 16); |
2908 | ||
2909 | /* Reserve for ethernet and IP header */ | |
2910 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2911 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2912 | if (pkt_dev->nr_labels) | |
2913 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2914 | |
2915 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2916 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2917 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2918 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2919 | pkt_dev->svlan_cfi, | |
2920 | pkt_dev->svlan_p); | |
34954ddc | 2921 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2922 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2923 | } |
2924 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2925 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2926 | pkt_dev->vlan_cfi, | |
2927 | pkt_dev->vlan_p); | |
34954ddc | 2928 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2929 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2930 | } |
2931 | ||
525cebed TG |
2932 | skb_set_mac_header(skb, 0); |
2933 | skb_set_network_header(skb, skb->len); | |
2934 | iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr)); | |
2935 | ||
2936 | skb_set_transport_header(skb, skb->len); | |
2937 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2938 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2939 | skb->priority = pkt_dev->skb_priority; |
1da177e4 | 2940 | |
1da177e4 | 2941 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2942 | *(__be16 *) ð[12] = protocol; |
64053bee | 2943 | |
ca6549af SW |
2944 | /* Eth + IPh + UDPh + mpls */ |
2945 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2946 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2947 | pkt_dev->pkt_overhead; |
1da177e4 | 2948 | |
5aa8b572 | 2949 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 2950 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 2951 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
2952 | } |
2953 | ||
c26bf4a5 | 2954 | udplen = datalen + sizeof(struct udphdr); |
1da177e4 LT |
2955 | udph->source = htons(pkt_dev->cur_udp_src); |
2956 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
c26bf4a5 TG |
2957 | udph->len = htons(udplen); |
2958 | udph->check = 0; | |
1da177e4 | 2959 | |
d5f1ce9a | 2960 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2961 | |
1ca7768c FF |
2962 | if (pkt_dev->traffic_class) { |
2963 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2964 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2965 | } |
2966 | ||
1da177e4 LT |
2967 | iph->hop_limit = 32; |
2968 | ||
c26bf4a5 | 2969 | iph->payload_len = htons(udplen); |
1da177e4 LT |
2970 | iph->nexthdr = IPPROTO_UDP; |
2971 | ||
4e3fd7a0 AD |
2972 | iph->daddr = pkt_dev->cur_in6_daddr; |
2973 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 2974 | |
ca6549af | 2975 | skb->protocol = protocol; |
1da177e4 LT |
2976 | skb->dev = odev; |
2977 | skb->pkt_type = PACKET_HOST; | |
2978 | ||
7744b5f3 SD |
2979 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2980 | ||
c26bf4a5 TG |
2981 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2982 | skb->ip_summed = CHECKSUM_NONE; | |
2983 | } else if (odev->features & NETIF_F_V6_CSUM) { | |
2984 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2985 | skb->csum_start = skb_transport_header(skb) - skb->head; | |
2986 | skb->csum_offset = offsetof(struct udphdr, check); | |
2987 | udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); | |
2988 | } else { | |
7744b5f3 | 2989 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0); |
c26bf4a5 TG |
2990 | |
2991 | /* add protocol-dependent pseudo-header */ | |
2992 | udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); | |
2993 | ||
2994 | if (udph->check == 0) | |
2995 | udph->check = CSUM_MANGLED_0; | |
2996 | } | |
2997 | ||
1da177e4 LT |
2998 | return skb; |
2999 | } | |
3000 | ||
475ac1e4 SH |
3001 | static struct sk_buff *fill_packet(struct net_device *odev, |
3002 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3003 | { |
222f1806 | 3004 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3005 | return fill_packet_ipv6(odev, pkt_dev); |
3006 | else | |
3007 | return fill_packet_ipv4(odev, pkt_dev); | |
3008 | } | |
3009 | ||
222f1806 | 3010 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3011 | { |
222f1806 LC |
3012 | pkt_dev->seq_num = 1; |
3013 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3014 | pkt_dev->sofar = 0; |
222f1806 LC |
3015 | pkt_dev->tx_bytes = 0; |
3016 | pkt_dev->errors = 0; | |
1da177e4 LT |
3017 | } |
3018 | ||
3019 | /* Set up structure for sending pkts, clear counters */ | |
3020 | ||
3021 | static void pktgen_run(struct pktgen_thread *t) | |
3022 | { | |
c26a8016 | 3023 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3024 | int started = 0; |
3025 | ||
f9467eae | 3026 | func_enter(); |
1da177e4 | 3027 | |
8788370a JDB |
3028 | rcu_read_lock(); |
3029 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
1da177e4 LT |
3030 | |
3031 | /* | |
3032 | * setup odev and create initial packet. | |
3033 | */ | |
3034 | pktgen_setup_inject(pkt_dev); | |
3035 | ||
222f1806 | 3036 | if (pkt_dev->odev) { |
1da177e4 | 3037 | pktgen_clear_counters(pkt_dev); |
1da177e4 | 3038 | pkt_dev->skb = NULL; |
398f382c | 3039 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 3040 | |
16dab72f | 3041 | set_pkt_overhead(pkt_dev); |
222f1806 | 3042 | |
1da177e4 | 3043 | strcpy(pkt_dev->result, "Starting"); |
8788370a | 3044 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3045 | started++; |
222f1806 | 3046 | } else |
1da177e4 LT |
3047 | strcpy(pkt_dev->result, "Error starting"); |
3048 | } | |
8788370a | 3049 | rcu_read_unlock(); |
222f1806 LC |
3050 | if (started) |
3051 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3052 | } |
3053 | ||
4e58a027 | 3054 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 3055 | { |
cdcdbe0b | 3056 | struct pktgen_thread *t; |
1da177e4 | 3057 | |
f9467eae | 3058 | func_enter(); |
1da177e4 | 3059 | |
6146e6a4 | 3060 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3061 | |
4e58a027 | 3062 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 3063 | t->control |= T_STOP; |
cdcdbe0b | 3064 | |
6146e6a4 | 3065 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3066 | } |
3067 | ||
648fda74 | 3068 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3069 | { |
648fda74 | 3070 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3071 | |
8788370a JDB |
3072 | rcu_read_lock(); |
3073 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
3074 | if (pkt_dev->running) { | |
3075 | rcu_read_unlock(); | |
648fda74 | 3076 | return 1; |
8788370a JDB |
3077 | } |
3078 | rcu_read_unlock(); | |
648fda74 | 3079 | return 0; |
1da177e4 LT |
3080 | } |
3081 | ||
222f1806 | 3082 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3083 | { |
222f1806 | 3084 | while (thread_is_running(t)) { |
1da177e4 | 3085 | |
222f1806 | 3086 | msleep_interruptible(100); |
1da177e4 | 3087 | |
222f1806 LC |
3088 | if (signal_pending(current)) |
3089 | goto signal; | |
222f1806 | 3090 | } |
222f1806 LC |
3091 | return 1; |
3092 | signal: | |
3093 | return 0; | |
1da177e4 LT |
3094 | } |
3095 | ||
4e58a027 | 3096 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 3097 | { |
cdcdbe0b | 3098 | struct pktgen_thread *t; |
1da177e4 | 3099 | int sig = 1; |
222f1806 | 3100 | |
6146e6a4 | 3101 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3102 | |
4e58a027 | 3103 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 3104 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3105 | if (sig == 0) |
3106 | break; | |
1da177e4 | 3107 | } |
cdcdbe0b LC |
3108 | |
3109 | if (sig == 0) | |
4e58a027 | 3110 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3111 | t->control |= (T_STOP); |
cdcdbe0b | 3112 | |
6146e6a4 | 3113 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3114 | return sig; |
3115 | } | |
3116 | ||
4e58a027 | 3117 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 3118 | { |
cdcdbe0b | 3119 | struct pktgen_thread *t; |
1da177e4 | 3120 | |
f9467eae | 3121 | func_enter(); |
1da177e4 | 3122 | |
6146e6a4 | 3123 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3124 | |
4e58a027 | 3125 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3126 | t->control |= (T_RUN); |
cdcdbe0b | 3127 | |
6146e6a4 | 3128 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3129 | |
63adc6fb SH |
3130 | /* Propagate thread->control */ |
3131 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3132 | |
4e58a027 | 3133 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3134 | } |
3135 | ||
4e58a027 | 3136 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3137 | { |
3138 | struct pktgen_thread *t; | |
3139 | ||
f9467eae | 3140 | func_enter(); |
eb37b41c JB |
3141 | |
3142 | mutex_lock(&pktgen_thread_lock); | |
3143 | ||
4e58a027 | 3144 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3145 | t->control |= (T_REMDEVALL); |
3146 | ||
3147 | mutex_unlock(&pktgen_thread_lock); | |
3148 | ||
63adc6fb SH |
3149 | /* Propagate thread->control */ |
3150 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3151 | |
4e58a027 | 3152 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3153 | } |
3154 | ||
1da177e4 LT |
3155 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3156 | { | |
fd29cf72 | 3157 | __u64 bps, mbps, pps; |
222f1806 | 3158 | char *p = pkt_dev->result; |
fd29cf72 SH |
3159 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3160 | pkt_dev->started_at); | |
3161 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3162 | ||
03a14ab1 | 3163 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3164 | (unsigned long long)ktime_to_us(elapsed), |
3165 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3166 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3167 | (unsigned long long)pkt_dev->sofar, |
3168 | pkt_dev->cur_pkt_size, nr_frags); | |
3169 | ||
fd29cf72 SH |
3170 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3171 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3172 | |
3173 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3174 | ||
3175 | mbps = bps; | |
3176 | do_div(mbps, 1000000); | |
3177 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3178 | (unsigned long long)pps, | |
3179 | (unsigned long long)mbps, | |
3180 | (unsigned long long)bps, | |
3181 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3182 | } |
1da177e4 LT |
3183 | |
3184 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3185 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3186 | { |
222f1806 | 3187 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3188 | |
222f1806 | 3189 | if (!pkt_dev->running) { |
294a0b7f JP |
3190 | pr_warn("interface: %s is already stopped\n", |
3191 | pkt_dev->odevname); | |
222f1806 LC |
3192 | return -EINVAL; |
3193 | } | |
1da177e4 | 3194 | |
8788370a | 3195 | pkt_dev->running = 0; |
3bda06a3 SH |
3196 | kfree_skb(pkt_dev->skb); |
3197 | pkt_dev->skb = NULL; | |
398f382c | 3198 | pkt_dev->stopped_at = ktime_get(); |
1da177e4 | 3199 | |
95ed63f7 | 3200 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3201 | |
222f1806 | 3202 | return 0; |
1da177e4 LT |
3203 | } |
3204 | ||
222f1806 | 3205 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3206 | { |
c26a8016 | 3207 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3208 | |
8788370a JDB |
3209 | rcu_read_lock(); |
3210 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
c26a8016 | 3211 | if (!pkt_dev->running) |
222f1806 LC |
3212 | continue; |
3213 | if (best == NULL) | |
c26a8016 | 3214 | best = pkt_dev; |
398f382c | 3215 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3216 | best = pkt_dev; |
1da177e4 | 3217 | } |
8788370a JDB |
3218 | rcu_read_unlock(); |
3219 | ||
222f1806 | 3220 | return best; |
1da177e4 LT |
3221 | } |
3222 | ||
222f1806 LC |
3223 | static void pktgen_stop(struct pktgen_thread *t) |
3224 | { | |
c26a8016 | 3225 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3226 | |
f9467eae | 3227 | func_enter(); |
1da177e4 | 3228 | |
8788370a | 3229 | rcu_read_lock(); |
1da177e4 | 3230 | |
8788370a | 3231 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { |
c26a8016 | 3232 | pktgen_stop_device(pkt_dev); |
95ed63f7 | 3233 | } |
1da177e4 | 3234 | |
8788370a | 3235 | rcu_read_unlock(); |
1da177e4 LT |
3236 | } |
3237 | ||
95ed63f7 AK |
3238 | /* |
3239 | * one of our devices needs to be removed - find it | |
3240 | * and remove it | |
3241 | */ | |
3242 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3243 | { | |
c26a8016 LC |
3244 | struct list_head *q, *n; |
3245 | struct pktgen_dev *cur; | |
95ed63f7 | 3246 | |
f9467eae | 3247 | func_enter(); |
95ed63f7 | 3248 | |
c26a8016 LC |
3249 | list_for_each_safe(q, n, &t->if_list) { |
3250 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3251 | |
222f1806 LC |
3252 | if (!cur->removal_mark) |
3253 | continue; | |
95ed63f7 | 3254 | |
86dc1ad2 | 3255 | kfree_skb(cur->skb); |
95ed63f7 AK |
3256 | cur->skb = NULL; |
3257 | ||
3258 | pktgen_remove_device(t, cur); | |
3259 | ||
3260 | break; | |
3261 | } | |
95ed63f7 AK |
3262 | } |
3263 | ||
222f1806 | 3264 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3265 | { |
c26a8016 LC |
3266 | struct list_head *q, *n; |
3267 | struct pktgen_dev *cur; | |
222f1806 | 3268 | |
f9467eae JP |
3269 | func_enter(); |
3270 | ||
222f1806 | 3271 | /* Remove all devices, free mem */ |
95ed63f7 | 3272 | |
c26a8016 LC |
3273 | list_for_each_safe(q, n, &t->if_list) { |
3274 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3275 | |
86dc1ad2 | 3276 | kfree_skb(cur->skb); |
95ed63f7 AK |
3277 | cur->skb = NULL; |
3278 | ||
1da177e4 LT |
3279 | pktgen_remove_device(t, cur); |
3280 | } | |
1da177e4 LT |
3281 | } |
3282 | ||
222f1806 | 3283 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3284 | { |
222f1806 | 3285 | /* Remove from the thread list */ |
4e58a027 | 3286 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3287 | } |
3288 | ||
ef87979c | 3289 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3290 | { |
398f382c | 3291 | ktime_t idle_start = ktime_get(); |
ef87979c | 3292 | schedule(); |
398f382c | 3293 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3294 | } |
3791decb | 3295 | |
ef87979c SH |
3296 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3297 | { | |
398f382c | 3298 | ktime_t idle_start = ktime_get(); |
3791decb | 3299 | |
ef87979c SH |
3300 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3301 | if (signal_pending(current)) | |
3302 | break; | |
3303 | ||
3304 | if (need_resched()) | |
3305 | pktgen_resched(pkt_dev); | |
3306 | else | |
3307 | cpu_relax(); | |
3308 | } | |
398f382c | 3309 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3310 | } |
3311 | ||
475ac1e4 | 3312 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3313 | { |
38b2cf29 | 3314 | unsigned int burst = ACCESS_ONCE(pkt_dev->burst); |
00829823 | 3315 | struct net_device *odev = pkt_dev->odev; |
fd2ea0a7 | 3316 | struct netdev_queue *txq; |
1da177e4 LT |
3317 | int ret; |
3318 | ||
ef87979c SH |
3319 | /* If device is offline, then don't send */ |
3320 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3321 | pktgen_stop_device(pkt_dev); | |
3322 | return; | |
fd2ea0a7 DM |
3323 | } |
3324 | ||
ef87979c SH |
3325 | /* This is max DELAY, this has special meaning of |
3326 | * "never transmit" | |
3327 | */ | |
3328 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3329 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3330 | return; |
1da177e4 | 3331 | } |
222f1806 | 3332 | |
ef87979c | 3333 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3334 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3335 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3336 | /* build a new pkt */ | |
3337 | kfree_skb(pkt_dev->skb); | |
3338 | ||
3339 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3340 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3341 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3342 | schedule(); |
3343 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3344 | return; | |
1da177e4 | 3345 | } |
baac8564 | 3346 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3347 | pkt_dev->allocated_skbs++; |
3348 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3349 | } |
95ed63f7 | 3350 | |
ef87979c SH |
3351 | if (pkt_dev->delay && pkt_dev->last_ok) |
3352 | spin(pkt_dev, pkt_dev->next_tx); | |
3353 | ||
10c51b56 | 3354 | txq = skb_get_tx_queue(odev, pkt_dev->skb); |
fd2ea0a7 | 3355 | |
0f2eea4b DB |
3356 | local_bh_disable(); |
3357 | ||
3358 | HARD_TX_LOCK(odev, txq, smp_processor_id()); | |
5b8db2f5 | 3359 | |
6f25cd47 | 3360 | if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { |
ef87979c | 3361 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3362 | pkt_dev->last_ok = 0; |
3363 | goto unlock; | |
3364 | } | |
38b2cf29 AS |
3365 | atomic_add(burst, &pkt_dev->skb->users); |
3366 | ||
3367 | xmit_more: | |
3368 | ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0); | |
ef87979c SH |
3369 | |
3370 | switch (ret) { | |
3371 | case NETDEV_TX_OK: | |
ef87979c SH |
3372 | pkt_dev->last_ok = 1; |
3373 | pkt_dev->sofar++; | |
3374 | pkt_dev->seq_num++; | |
baac8564 | 3375 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
38b2cf29 AS |
3376 | if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq)) |
3377 | goto xmit_more; | |
ef87979c | 3378 | break; |
f466dba1 JF |
3379 | case NET_XMIT_DROP: |
3380 | case NET_XMIT_CN: | |
3381 | case NET_XMIT_POLICED: | |
3382 | /* skb has been consumed */ | |
3383 | pkt_dev->errors++; | |
3384 | break; | |
ef87979c | 3385 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3386 | net_info_ratelimited("%s xmit error: %d\n", |
3387 | pkt_dev->odevname, ret); | |
ef87979c SH |
3388 | pkt_dev->errors++; |
3389 | /* fallthru */ | |
3390 | case NETDEV_TX_LOCKED: | |
3391 | case NETDEV_TX_BUSY: | |
3392 | /* Retry it next time */ | |
3393 | atomic_dec(&(pkt_dev->skb->users)); | |
3394 | pkt_dev->last_ok = 0; | |
222f1806 | 3395 | } |
38b2cf29 AS |
3396 | if (unlikely(burst)) |
3397 | atomic_sub(burst, &pkt_dev->skb->users); | |
0835acfe | 3398 | unlock: |
0f2eea4b DB |
3399 | HARD_TX_UNLOCK(odev, txq); |
3400 | ||
3401 | local_bh_enable(); | |
222f1806 | 3402 | |
1da177e4 LT |
3403 | /* If pkt_dev->count is zero, then run forever */ |
3404 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3405 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3406 | |
1da177e4 LT |
3407 | /* Done with this */ |
3408 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3409 | } |
222f1806 | 3410 | } |
1da177e4 | 3411 | |
4ec93edb | 3412 | /* |
1da177e4 LT |
3413 | * Main loop of the thread goes here |
3414 | */ | |
3415 | ||
ee74baa7 | 3416 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3417 | { |
3418 | DEFINE_WAIT(wait); | |
ee74baa7 | 3419 | struct pktgen_thread *t = arg; |
222f1806 | 3420 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3421 | int cpu = t->cpu; |
1da177e4 | 3422 | |
ee74baa7 | 3423 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3424 | |
3425 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3426 | complete(&t->start_done); |
1da177e4 | 3427 | |
f9467eae | 3428 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3429 | |
83144186 RW |
3430 | set_freezable(); |
3431 | ||
baac167b JDB |
3432 | __set_current_state(TASK_RUNNING); |
3433 | ||
ee74baa7 DM |
3434 | while (!kthread_should_stop()) { |
3435 | pkt_dev = next_to_run(t); | |
1da177e4 | 3436 | |
ef87979c | 3437 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3438 | if (t->net->pktgen_exiting) |
551eaff1 | 3439 | break; |
ef87979c SH |
3440 | wait_event_interruptible_timeout(t->queue, |
3441 | t->control != 0, | |
3442 | HZ/10); | |
1b3f720b | 3443 | try_to_freeze(); |
ef87979c | 3444 | continue; |
ee74baa7 | 3445 | } |
1da177e4 | 3446 | |
ef87979c | 3447 | if (likely(pkt_dev)) { |
1da177e4 LT |
3448 | pktgen_xmit(pkt_dev); |
3449 | ||
ef87979c SH |
3450 | if (need_resched()) |
3451 | pktgen_resched(pkt_dev); | |
3452 | else | |
3453 | cpu_relax(); | |
3454 | } | |
3455 | ||
222f1806 | 3456 | if (t->control & T_STOP) { |
1da177e4 LT |
3457 | pktgen_stop(t); |
3458 | t->control &= ~(T_STOP); | |
3459 | } | |
3460 | ||
222f1806 | 3461 | if (t->control & T_RUN) { |
1da177e4 LT |
3462 | pktgen_run(t); |
3463 | t->control &= ~(T_RUN); | |
3464 | } | |
3465 | ||
222f1806 | 3466 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3467 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3468 | t->control &= ~(T_REMDEVALL); |
3469 | } | |
3470 | ||
222f1806 | 3471 | if (t->control & T_REMDEV) { |
95ed63f7 | 3472 | pktgen_rem_one_if(t); |
1da177e4 LT |
3473 | t->control &= ~(T_REMDEV); |
3474 | } | |
3475 | ||
09fe3ef4 | 3476 | try_to_freeze(); |
222f1806 | 3477 | } |
baac167b | 3478 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 3479 | |
f9467eae | 3480 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3481 | pktgen_stop(t); |
1da177e4 | 3482 | |
f9467eae | 3483 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3484 | pktgen_rem_all_ifs(t); |
1da177e4 | 3485 | |
f9467eae | 3486 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3487 | pktgen_rem_thread(t); |
cdcdbe0b | 3488 | |
551eaff1 ED |
3489 | /* Wait for kthread_stop */ |
3490 | while (!kthread_should_stop()) { | |
3491 | set_current_state(TASK_INTERRUPTIBLE); | |
3492 | schedule(); | |
3493 | } | |
3494 | __set_current_state(TASK_RUNNING); | |
3495 | ||
ee74baa7 | 3496 | return 0; |
1da177e4 LT |
3497 | } |
3498 | ||
222f1806 | 3499 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3500 | const char *ifname, bool exact) |
1da177e4 | 3501 | { |
c26a8016 | 3502 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3503 | size_t len = strlen(ifname); |
222f1806 | 3504 | |
8788370a JDB |
3505 | rcu_read_lock(); |
3506 | list_for_each_entry_rcu(p, &t->if_list, list) | |
3e984840 ED |
3507 | if (strncmp(p->odevname, ifname, len) == 0) { |
3508 | if (p->odevname[len]) { | |
3509 | if (exact || p->odevname[len] != '@') | |
3510 | continue; | |
3511 | } | |
c26a8016 | 3512 | pkt_dev = p; |
222f1806 LC |
3513 | break; |
3514 | } | |
222f1806 | 3515 | |
8788370a | 3516 | rcu_read_unlock(); |
f9467eae | 3517 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3518 | return pkt_dev; |
1da177e4 LT |
3519 | } |
3520 | ||
4ec93edb YH |
3521 | /* |
3522 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3523 | */ |
3524 | ||
222f1806 LC |
3525 | static int add_dev_to_thread(struct pktgen_thread *t, |
3526 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3527 | { |
3528 | int rv = 0; | |
222f1806 | 3529 | |
8788370a JDB |
3530 | /* This function cannot be called concurrently, as its called |
3531 | * under pktgen_thread_lock mutex, but it can run from | |
3532 | * userspace on another CPU than the kthread. The if_lock() | |
3533 | * is used here to sync with concurrent instances of | |
3534 | * _rem_dev_from_if_list() invoked via kthread, which is also | |
3535 | * updating the if_list */ | |
222f1806 LC |
3536 | if_lock(t); |
3537 | ||
3538 | if (pkt_dev->pg_thread) { | |
f9467eae | 3539 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3540 | rv = -EBUSY; |
3541 | goto out; | |
3542 | } | |
c26a8016 | 3543 | |
1da177e4 | 3544 | pkt_dev->running = 0; |
8788370a JDB |
3545 | pkt_dev->pg_thread = t; |
3546 | list_add_rcu(&pkt_dev->list, &t->if_list); | |
1da177e4 | 3547 | |
222f1806 LC |
3548 | out: |
3549 | if_unlock(t); | |
3550 | return rv; | |
1da177e4 LT |
3551 | } |
3552 | ||
3553 | /* Called under thread lock */ | |
3554 | ||
222f1806 | 3555 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3556 | { |
222f1806 | 3557 | struct pktgen_dev *pkt_dev; |
39df232f | 3558 | int err; |
3291b9db | 3559 | int node = cpu_to_node(t->cpu); |
222f1806 | 3560 | |
1da177e4 LT |
3561 | /* We don't allow a device to be on several threads */ |
3562 | ||
4e58a027 | 3563 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3564 | if (pkt_dev) { |
f9467eae | 3565 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3566 | return -EBUSY; |
3567 | } | |
d50a6b56 | 3568 | |
3291b9db | 3569 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3570 | if (!pkt_dev) |
3571 | return -ENOMEM; | |
3572 | ||
593f63b0 | 3573 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3574 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3575 | node); |
d50a6b56 SH |
3576 | if (pkt_dev->flows == NULL) { |
3577 | kfree(pkt_dev); | |
3578 | return -ENOMEM; | |
3579 | } | |
d50a6b56 | 3580 | |
95ed63f7 | 3581 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3582 | pkt_dev->nfrags = 0; |
fd29cf72 | 3583 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3584 | pkt_dev->count = pg_count_d; |
3585 | pkt_dev->sofar = 0; | |
222f1806 | 3586 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3587 | pkt_dev->udp_src_max = 9; |
3588 | pkt_dev->udp_dst_min = 9; | |
3589 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3590 | pkt_dev->vlan_p = 0; |
3591 | pkt_dev->vlan_cfi = 0; | |
3592 | pkt_dev->vlan_id = 0xffff; | |
3593 | pkt_dev->svlan_p = 0; | |
3594 | pkt_dev->svlan_cfi = 0; | |
3595 | pkt_dev->svlan_id = 0xffff; | |
38b2cf29 | 3596 | pkt_dev->burst = 1; |
e99b99b4 | 3597 | pkt_dev->node = -1; |
34954ddc | 3598 | |
4e58a027 | 3599 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3600 | if (err) |
3601 | goto out1; | |
d8873315 NH |
3602 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3603 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3604 | |
4e58a027 | 3605 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3606 | &pktgen_if_fops, pkt_dev); |
39df232f | 3607 | if (!pkt_dev->entry) { |
f9467eae | 3608 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3609 | PG_PROC_DIR, ifname); |
39df232f SH |
3610 | err = -EINVAL; |
3611 | goto out2; | |
d50a6b56 | 3612 | } |
a553e4a6 JHS |
3613 | #ifdef CONFIG_XFRM |
3614 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3615 | pkt_dev->ipsproto = IPPROTO_ESP; | |
cf93d47e FD |
3616 | |
3617 | /* xfrm tunnel mode needs additional dst to extract outter | |
3618 | * ip header protocol/ttl/id field, here creat a phony one. | |
3619 | * instead of looking for a valid rt, which definitely hurting | |
3620 | * performance under such circumstance. | |
3621 | */ | |
3622 | pkt_dev->dstops.family = AF_INET; | |
3623 | pkt_dev->dst.dev = pkt_dev->odev; | |
3624 | dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false); | |
3625 | pkt_dev->dst.child = &pkt_dev->dst; | |
3626 | pkt_dev->dst.ops = &pkt_dev->dstops; | |
a553e4a6 | 3627 | #endif |
d50a6b56 SH |
3628 | |
3629 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3630 | out2: |
3631 | dev_put(pkt_dev->odev); | |
3632 | out1: | |
a553e4a6 JHS |
3633 | #ifdef CONFIG_XFRM |
3634 | free_SAs(pkt_dev); | |
3635 | #endif | |
1d0ebfe7 | 3636 | vfree(pkt_dev->flows); |
39df232f SH |
3637 | kfree(pkt_dev); |
3638 | return err; | |
1da177e4 LT |
3639 | } |
3640 | ||
4e58a027 | 3641 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3642 | { |
cdcdbe0b | 3643 | struct pktgen_thread *t; |
d50a6b56 | 3644 | struct proc_dir_entry *pe; |
ee74baa7 | 3645 | struct task_struct *p; |
222f1806 | 3646 | |
3291b9db ED |
3647 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3648 | cpu_to_node(cpu)); | |
222f1806 | 3649 | if (!t) { |
f9467eae | 3650 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3651 | return -ENOMEM; |
3652 | } | |
3653 | ||
222f1806 | 3654 | spin_lock_init(&t->if_lock); |
1da177e4 | 3655 | t->cpu = cpu; |
222f1806 | 3656 | |
ee74baa7 DM |
3657 | INIT_LIST_HEAD(&t->if_list); |
3658 | ||
4e58a027 | 3659 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3660 | init_completion(&t->start_done); |
ee74baa7 | 3661 | |
94dcf29a ED |
3662 | p = kthread_create_on_node(pktgen_thread_worker, |
3663 | t, | |
3664 | cpu_to_node(cpu), | |
3665 | "kpktgend_%d", cpu); | |
ee74baa7 | 3666 | if (IS_ERR(p)) { |
f9467eae | 3667 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3668 | list_del(&t->th_list); |
3669 | kfree(t); | |
3670 | return PTR_ERR(p); | |
3671 | } | |
3672 | kthread_bind(p, cpu); | |
3673 | t->tsk = p; | |
3674 | ||
4e58a027 | 3675 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3676 | &pktgen_thread_fops, t); |
222f1806 | 3677 | if (!pe) { |
f9467eae | 3678 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3679 | PG_PROC_DIR, t->tsk->comm); |
3680 | kthread_stop(p); | |
3681 | list_del(&t->th_list); | |
222f1806 LC |
3682 | kfree(t); |
3683 | return -EINVAL; | |
3684 | } | |
d50a6b56 | 3685 | |
4e58a027 | 3686 | t->net = pn; |
ee74baa7 | 3687 | wake_up_process(p); |
d3ede327 | 3688 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3689 | |
3690 | return 0; | |
3691 | } | |
3692 | ||
4ec93edb YH |
3693 | /* |
3694 | * Removes a device from the thread if_list. | |
1da177e4 | 3695 | */ |
222f1806 LC |
3696 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3697 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3698 | { |
c26a8016 LC |
3699 | struct list_head *q, *n; |
3700 | struct pktgen_dev *p; | |
1da177e4 | 3701 | |
8788370a | 3702 | if_lock(t); |
c26a8016 LC |
3703 | list_for_each_safe(q, n, &t->if_list) { |
3704 | p = list_entry(q, struct pktgen_dev, list); | |
3705 | if (p == pkt_dev) | |
8788370a | 3706 | list_del_rcu(&p->list); |
1da177e4 | 3707 | } |
8788370a | 3708 | if_unlock(t); |
1da177e4 LT |
3709 | } |
3710 | ||
222f1806 LC |
3711 | static int pktgen_remove_device(struct pktgen_thread *t, |
3712 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3713 | { |
f9467eae | 3714 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3715 | |
222f1806 | 3716 | if (pkt_dev->running) { |
294a0b7f | 3717 | pr_warn("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3718 | pktgen_stop_device(pkt_dev); |
3719 | } | |
3720 | ||
3721 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3722 | |
3723 | if (pkt_dev->odev) { | |
3724 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3725 | pkt_dev->odev = NULL; |
3726 | } | |
3727 | ||
8788370a JDB |
3728 | /* Remove proc before if_list entry, because add_device uses |
3729 | * list to determine if interface already exist, avoid race | |
3730 | * with proc_create_data() */ | |
ef87c5d6 | 3731 | proc_remove(pkt_dev->entry); |
1da177e4 | 3732 | |
8788370a JDB |
3733 | /* And update the thread if_list */ |
3734 | _rem_dev_from_if_list(t, pkt_dev); | |
3735 | ||
a553e4a6 JHS |
3736 | #ifdef CONFIG_XFRM |
3737 | free_SAs(pkt_dev); | |
3738 | #endif | |
1d0ebfe7 | 3739 | vfree(pkt_dev->flows); |
26ad7879 ED |
3740 | if (pkt_dev->page) |
3741 | put_page(pkt_dev->page); | |
8788370a | 3742 | kfree_rcu(pkt_dev, rcu); |
222f1806 | 3743 | return 0; |
1da177e4 LT |
3744 | } |
3745 | ||
4e58a027 | 3746 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3747 | { |
4e58a027 | 3748 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3749 | struct proc_dir_entry *pe; |
4e58a027 CW |
3750 | int cpu, ret = 0; |
3751 | ||
3752 | pn->net = net; | |
3753 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3754 | pn->pktgen_exiting = false; | |
3755 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3756 | if (!pn->proc_dir) { | |
3757 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3758 | return -ENODEV; |
4e58a027 CW |
3759 | } |
3760 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3761 | if (pe == NULL) { |
4e58a027 | 3762 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3763 | ret = -EINVAL; |
4e58a027 | 3764 | goto remove; |
222f1806 | 3765 | } |
1da177e4 | 3766 | |
670c02c2 | 3767 | for_each_online_cpu(cpu) { |
8024bb24 | 3768 | int err; |
1da177e4 | 3769 | |
4e58a027 | 3770 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3771 | if (err) |
4e58a027 | 3772 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3773 | cpu, err); |
222f1806 | 3774 | } |
8024bb24 | 3775 | |
4e58a027 CW |
3776 | if (list_empty(&pn->pktgen_threads)) { |
3777 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3778 | ret = -ENODEV; |
4e58a027 | 3779 | goto remove_entry; |
8024bb24 LC |
3780 | } |
3781 | ||
222f1806 | 3782 | return 0; |
ce14f894 | 3783 | |
4e58a027 CW |
3784 | remove_entry: |
3785 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3786 | remove: | |
ece31ffd | 3787 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3788 | return ret; |
1da177e4 LT |
3789 | } |
3790 | ||
4e58a027 | 3791 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3792 | { |
4e58a027 | 3793 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3794 | struct pktgen_thread *t; |
3795 | struct list_head *q, *n; | |
d4b11335 | 3796 | LIST_HEAD(list); |
1da177e4 | 3797 | |
222f1806 | 3798 | /* Stop all interfaces & threads */ |
4e58a027 | 3799 | pn->pktgen_exiting = true; |
1da177e4 | 3800 | |
c57b5468 | 3801 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3802 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3803 | mutex_unlock(&pktgen_thread_lock); |
3804 | ||
3805 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3806 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3807 | list_del(&t->th_list); |
ee74baa7 DM |
3808 | kthread_stop(t->tsk); |
3809 | kfree(t); | |
222f1806 | 3810 | } |
1da177e4 | 3811 | |
4e58a027 | 3812 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3813 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3814 | } |
3815 | ||
3816 | static struct pernet_operations pg_net_ops = { | |
3817 | .init = pg_net_init, | |
3818 | .exit = pg_net_exit, | |
3819 | .id = &pg_net_id, | |
3820 | .size = sizeof(struct pktgen_net), | |
3821 | }; | |
3822 | ||
3823 | static int __init pg_init(void) | |
3824 | { | |
3825 | int ret = 0; | |
1da177e4 | 3826 | |
4e58a027 CW |
3827 | pr_info("%s", version); |
3828 | ret = register_pernet_subsys(&pg_net_ops); | |
3829 | if (ret) | |
3830 | return ret; | |
3831 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3832 | if (ret) | |
3833 | unregister_pernet_subsys(&pg_net_ops); | |
3834 | ||
3835 | return ret; | |
3836 | } | |
3837 | ||
3838 | static void __exit pg_cleanup(void) | |
3839 | { | |
3840 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3841 | unregister_pernet_subsys(&pg_net_ops); | |
8788370a | 3842 | /* Don't need rcu_barrier() due to use of kfree_rcu() */ |
1da177e4 LT |
3843 | } |
3844 | ||
1da177e4 LT |
3845 | module_init(pg_init); |
3846 | module_exit(pg_cleanup); | |
3847 | ||
c3d2f52d | 3848 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3849 | MODULE_DESCRIPTION("Packet Generator tool"); |
3850 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3851 | MODULE_VERSION(VERSION); |
1da177e4 | 3852 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3853 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3854 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3855 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3856 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3857 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3858 | module_param(debug, int, 0); |
c3d2f52d | 3859 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |