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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 | |
1da177e4 LT |
72 | * way. The if_lock should be possible to remove when add/rem_device is merged |
73 | * into this too. | |
74 | * | |
4ec93edb YH |
75 | * By design there should only be *one* "controlling" process. In practice |
76 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 77 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 78 | * For practical use this should be no problem. |
1da177e4 | 79 | * |
4ec93edb YH |
80 | * Note when adding devices to a specific CPU there good idea to also assign |
81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
82 | * --ro |
83 | * | |
4ec93edb | 84 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
85 | * memleak 030710- KJP |
86 | * | |
87 | * First "ranges" functionality for ipv6 030726 --ro | |
88 | * | |
89 | * Included flow support. 030802 ANK. | |
90 | * | |
91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 92 | * |
1da177e4 LT |
93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
95 | * | |
4ec93edb | 96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
97 | * <shemminger@osdl.org> 040923 |
98 | * | |
4ec93edb | 99 | * Randy Dunlap fixed u64 printk compiler waring |
1da177e4 LT |
100 | * |
101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
103 | * | |
4ec93edb | 104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
106 | * | |
4ec93edb | 107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 108 | * 050103 |
ca6549af SW |
109 | * |
110 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
111 | * | |
34954ddc FF |
112 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
113 | * | |
ce5d0b47 AR |
114 | * Fixed src_mac command to set source mac of packet to value specified in |
115 | * command by Adit Ranadive <adit.262@gmail.com> | |
116 | * | |
1da177e4 | 117 | */ |
f9467eae JP |
118 | |
119 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
120 | ||
1da177e4 LT |
121 | #include <linux/sys.h> |
122 | #include <linux/types.h> | |
123 | #include <linux/module.h> | |
124 | #include <linux/moduleparam.h> | |
125 | #include <linux/kernel.h> | |
222fa076 | 126 | #include <linux/mutex.h> |
1da177e4 LT |
127 | #include <linux/sched.h> |
128 | #include <linux/slab.h> | |
129 | #include <linux/vmalloc.h> | |
1da177e4 LT |
130 | #include <linux/unistd.h> |
131 | #include <linux/string.h> | |
132 | #include <linux/ptrace.h> | |
133 | #include <linux/errno.h> | |
134 | #include <linux/ioport.h> | |
135 | #include <linux/interrupt.h> | |
4fc268d2 | 136 | #include <linux/capability.h> |
2bc481cf | 137 | #include <linux/hrtimer.h> |
09fe3ef4 | 138 | #include <linux/freezer.h> |
1da177e4 LT |
139 | #include <linux/delay.h> |
140 | #include <linux/timer.h> | |
cdcdbe0b | 141 | #include <linux/list.h> |
1da177e4 LT |
142 | #include <linux/init.h> |
143 | #include <linux/skbuff.h> | |
144 | #include <linux/netdevice.h> | |
145 | #include <linux/inet.h> | |
146 | #include <linux/inetdevice.h> | |
147 | #include <linux/rtnetlink.h> | |
148 | #include <linux/if_arp.h> | |
34954ddc | 149 | #include <linux/if_vlan.h> |
1da177e4 LT |
150 | #include <linux/in.h> |
151 | #include <linux/ip.h> | |
152 | #include <linux/ipv6.h> | |
153 | #include <linux/udp.h> | |
154 | #include <linux/proc_fs.h> | |
d50a6b56 | 155 | #include <linux/seq_file.h> |
1da177e4 | 156 | #include <linux/wait.h> |
f404e9a6 | 157 | #include <linux/etherdevice.h> |
ee74baa7 | 158 | #include <linux/kthread.h> |
268bb0ce | 159 | #include <linux/prefetch.h> |
457c4cbc | 160 | #include <net/net_namespace.h> |
1da177e4 LT |
161 | #include <net/checksum.h> |
162 | #include <net/ipv6.h> | |
163 | #include <net/addrconf.h> | |
a553e4a6 JHS |
164 | #ifdef CONFIG_XFRM |
165 | #include <net/xfrm.h> | |
166 | #endif | |
1da177e4 LT |
167 | #include <asm/byteorder.h> |
168 | #include <linux/rcupdate.h> | |
1977f032 | 169 | #include <linux/bitops.h> |
63adc6fb SH |
170 | #include <linux/io.h> |
171 | #include <linux/timex.h> | |
172 | #include <linux/uaccess.h> | |
1da177e4 | 173 | #include <asm/dma.h> |
222f1806 | 174 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 175 | |
43d28b65 | 176 | #define VERSION "2.74" |
1da177e4 | 177 | #define IP_NAME_SZ 32 |
ca6549af | 178 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 179 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 180 | |
f9467eae JP |
181 | #define func_enter() pr_debug("entering %s\n", __func__); |
182 | ||
1da177e4 | 183 | /* Device flag bits */ |
222f1806 LC |
184 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
185 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
186 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
187 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
188 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
189 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
190 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
191 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 192 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
193 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
194 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 195 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 196 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 197 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 198 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 199 | #define F_NODE (1<<15) /* Node memory alloc*/ |
1da177e4 LT |
200 | |
201 | /* Thread control flag bits */ | |
6b80d6a6 SH |
202 | #define T_STOP (1<<0) /* Stop run */ |
203 | #define T_RUN (1<<1) /* Start run */ | |
204 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
205 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 206 | |
1da177e4 LT |
207 | /* If lock -- can be removed after some work */ |
208 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
209 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
210 | ||
211 | /* Used to help with determining the pkts on receive */ | |
212 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
213 | #define PG_PROC_DIR "pktgen" |
214 | #define PGCTRL "pgctrl" | |
63adc6fb | 215 | static struct proc_dir_entry *pg_proc_dir; |
1da177e4 LT |
216 | |
217 | #define MAX_CFLOWS 65536 | |
218 | ||
34954ddc FF |
219 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
220 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
221 | ||
222f1806 | 222 | struct flow_state { |
252e3346 | 223 | __be32 cur_daddr; |
222f1806 | 224 | int count; |
a553e4a6 JHS |
225 | #ifdef CONFIG_XFRM |
226 | struct xfrm_state *x; | |
227 | #endif | |
007a531b | 228 | __u32 flags; |
1da177e4 LT |
229 | }; |
230 | ||
007a531b JHS |
231 | /* flow flag bits */ |
232 | #define F_INIT (1<<0) /* flow has been initialized */ | |
233 | ||
1da177e4 | 234 | struct pktgen_dev { |
1da177e4 LT |
235 | /* |
236 | * Try to keep frequent/infrequent used vars. separated. | |
237 | */ | |
39df232f SH |
238 | struct proc_dir_entry *entry; /* proc file */ |
239 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 240 | struct list_head list; /* chaining in the thread's run-queue */ |
1da177e4 | 241 | |
63adc6fb | 242 | int running; /* if false, the test will stop */ |
1da177e4 | 243 | |
222f1806 LC |
244 | /* If min != max, then we will either do a linear iteration, or |
245 | * we will do a random selection from within the range. | |
246 | */ | |
247 | __u32 flags; | |
95ed63f7 AK |
248 | int removal_mark; /* non-zero => the device is marked for |
249 | * removal by worker thread */ | |
1da177e4 | 250 | |
222f1806 LC |
251 | int min_pkt_size; /* = ETH_ZLEN; */ |
252 | int max_pkt_size; /* = ETH_ZLEN; */ | |
16dab72f | 253 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 254 | int nfrags; |
26ad7879 | 255 | struct page *page; |
fd29cf72 SH |
256 | u64 delay; /* nano-seconds */ |
257 | ||
222f1806 LC |
258 | __u64 count; /* Default No packets to send */ |
259 | __u64 sofar; /* How many pkts we've sent so far */ | |
260 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 261 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
262 | |
263 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
264 | |
265 | __u64 allocated_skbs; | |
266 | __u32 clone_count; | |
267 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
268 | * Or a failed transmit of some sort? |
269 | * This will keep sequence numbers in order | |
222f1806 | 270 | */ |
fd29cf72 SH |
271 | ktime_t next_tx; |
272 | ktime_t started_at; | |
273 | ktime_t stopped_at; | |
274 | u64 idle_acc; /* nano-seconds */ | |
275 | ||
222f1806 LC |
276 | __u32 seq_num; |
277 | ||
63adc6fb SH |
278 | int clone_skb; /* |
279 | * Use multiple SKBs during packet gen. | |
280 | * If this number is greater than 1, then | |
281 | * that many copies of the same packet will be | |
282 | * sent before a new packet is allocated. | |
283 | * If you want to send 1024 identical packets | |
284 | * before creating a new packet, | |
285 | * set clone_skb to 1024. | |
222f1806 LC |
286 | */ |
287 | ||
288 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
289 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
290 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
291 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
292 | ||
293 | struct in6_addr in6_saddr; | |
294 | struct in6_addr in6_daddr; | |
295 | struct in6_addr cur_in6_daddr; | |
296 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 297 | /* For ranges */ |
222f1806 LC |
298 | struct in6_addr min_in6_daddr; |
299 | struct in6_addr max_in6_daddr; | |
300 | struct in6_addr min_in6_saddr; | |
301 | struct in6_addr max_in6_saddr; | |
302 | ||
303 | /* If we're doing ranges, random or incremental, then this | |
304 | * defines the min/max for those ranges. | |
305 | */ | |
252e3346 AV |
306 | __be32 saddr_min; /* inclusive, source IP address */ |
307 | __be32 saddr_max; /* exclusive, source IP address */ | |
308 | __be32 daddr_min; /* inclusive, dest IP address */ | |
309 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
310 | |
311 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
312 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
313 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
314 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
315 | ||
1ca7768c | 316 | /* DSCP + ECN */ |
63adc6fb SH |
317 | __u8 tos; /* six MSB of (former) IPv4 TOS |
318 | are for dscp codepoint */ | |
319 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
320 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 321 | |
ca6549af SW |
322 | /* MPLS */ |
323 | unsigned nr_labels; /* Depth of stack, 0 = no MPLS */ | |
324 | __be32 labels[MAX_MPLS_LABELS]; | |
325 | ||
34954ddc FF |
326 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
327 | __u8 vlan_p; | |
328 | __u8 vlan_cfi; | |
329 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
330 | ||
331 | __u8 svlan_p; | |
332 | __u8 svlan_cfi; | |
333 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
334 | ||
222f1806 LC |
335 | __u32 src_mac_count; /* How many MACs to iterate through */ |
336 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
337 | ||
338 | unsigned char dst_mac[ETH_ALEN]; | |
339 | unsigned char src_mac[ETH_ALEN]; | |
340 | ||
341 | __u32 cur_dst_mac_offset; | |
342 | __u32 cur_src_mac_offset; | |
252e3346 AV |
343 | __be32 cur_saddr; |
344 | __be32 cur_daddr; | |
66ed1e5e | 345 | __u16 ip_id; |
222f1806 LC |
346 | __u16 cur_udp_dst; |
347 | __u16 cur_udp_src; | |
45b270f8 | 348 | __u16 cur_queue_map; |
222f1806 | 349 | __u32 cur_pkt_size; |
baac8564 | 350 | __u32 last_pkt_size; |
222f1806 LC |
351 | |
352 | __u8 hh[14]; | |
353 | /* = { | |
354 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
355 | ||
356 | We fill in SRC address later | |
357 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
358 | 0x08, 0x00 | |
359 | }; | |
360 | */ | |
361 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
362 | ||
63adc6fb | 363 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
364 | * are transmitting the same one multiple times |
365 | */ | |
63adc6fb SH |
366 | struct net_device *odev; /* The out-going device. |
367 | * Note that the device should have it's | |
368 | * pg_info pointer pointing back to this | |
369 | * device. | |
370 | * Set when the user specifies the out-going | |
371 | * device name (not when the inject is | |
372 | * started as it used to do.) | |
373 | */ | |
593f63b0 | 374 | char odevname[32]; |
1da177e4 | 375 | struct flow_state *flows; |
222f1806 LC |
376 | unsigned cflows; /* Concurrent flows (config) */ |
377 | unsigned lflow; /* Flow length (config) */ | |
378 | unsigned nflows; /* accumulated flows (stats) */ | |
007a531b | 379 | unsigned curfl; /* current sequenced flow (state)*/ |
45b270f8 RO |
380 | |
381 | u16 queue_map_min; | |
382 | u16 queue_map_max; | |
9e50e3ac | 383 | __u32 skb_priority; /* skb priority field */ |
e99b99b4 | 384 | int node; /* Memory node */ |
45b270f8 | 385 | |
a553e4a6 JHS |
386 | #ifdef CONFIG_XFRM |
387 | __u8 ipsmode; /* IPSEC mode (config) */ | |
388 | __u8 ipsproto; /* IPSEC type (config) */ | |
389 | #endif | |
39df232f | 390 | char result[512]; |
1da177e4 LT |
391 | }; |
392 | ||
393 | struct pktgen_hdr { | |
252e3346 AV |
394 | __be32 pgh_magic; |
395 | __be32 seq_num; | |
396 | __be32 tv_sec; | |
397 | __be32 tv_usec; | |
1da177e4 LT |
398 | }; |
399 | ||
551eaff1 ED |
400 | static bool pktgen_exiting __read_mostly; |
401 | ||
1da177e4 | 402 | struct pktgen_thread { |
63adc6fb | 403 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 404 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 405 | struct list_head th_list; |
ee74baa7 | 406 | struct task_struct *tsk; |
222f1806 | 407 | char result[512]; |
222f1806 | 408 | |
63adc6fb SH |
409 | /* Field for thread to receive "posted" events terminate, |
410 | stop ifs etc. */ | |
222f1806 LC |
411 | |
412 | u32 control; | |
1da177e4 LT |
413 | int cpu; |
414 | ||
222f1806 | 415 | wait_queue_head_t queue; |
d3ede327 | 416 | struct completion start_done; |
1da177e4 LT |
417 | }; |
418 | ||
419 | #define REMOVE 1 | |
420 | #define FIND 0 | |
421 | ||
fd29cf72 | 422 | static inline ktime_t ktime_now(void) |
1da177e4 | 423 | { |
fd29cf72 SH |
424 | struct timespec ts; |
425 | ktime_get_ts(&ts); | |
426 | ||
427 | return timespec_to_ktime(ts); | |
1da177e4 LT |
428 | } |
429 | ||
fd29cf72 SH |
430 | /* This works even if 32 bit because of careful byte order choice */ |
431 | static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2) | |
1da177e4 | 432 | { |
fd29cf72 | 433 | return cmp1.tv64 < cmp2.tv64; |
1da177e4 LT |
434 | } |
435 | ||
c3d2f52d | 436 | static const char version[] = |
f9467eae JP |
437 | "Packet Generator for packet performance testing. " |
438 | "Version: " VERSION "\n"; | |
1da177e4 | 439 | |
222f1806 LC |
440 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
441 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
442 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 443 | const char *ifname, bool exact); |
1da177e4 LT |
444 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
445 | static void pktgen_run_all_threads(void); | |
eb37b41c | 446 | static void pktgen_reset_all_threads(void); |
1da177e4 | 447 | static void pktgen_stop_all_threads_ifs(void); |
3bda06a3 | 448 | |
222f1806 | 449 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 450 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 451 | |
222f1806 | 452 | static unsigned int scan_ip6(const char *s, char ip[16]); |
1da177e4 LT |
453 | |
454 | /* Module parameters, defaults. */ | |
65c5b786 SH |
455 | static int pg_count_d __read_mostly = 1000; |
456 | static int pg_delay_d __read_mostly; | |
457 | static int pg_clone_skb_d __read_mostly; | |
458 | static int debug __read_mostly; | |
1da177e4 | 459 | |
222fa076 | 460 | static DEFINE_MUTEX(pktgen_thread_lock); |
cdcdbe0b | 461 | static LIST_HEAD(pktgen_threads); |
1da177e4 | 462 | |
1da177e4 LT |
463 | static struct notifier_block pktgen_notifier_block = { |
464 | .notifier_call = pktgen_device_event, | |
465 | }; | |
466 | ||
1da177e4 | 467 | /* |
4ec93edb | 468 | * /proc handling functions |
1da177e4 LT |
469 | * |
470 | */ | |
471 | ||
d50a6b56 | 472 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 473 | { |
c3d2f52d | 474 | seq_puts(seq, version); |
d50a6b56 | 475 | return 0; |
1da177e4 LT |
476 | } |
477 | ||
63adc6fb SH |
478 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
479 | size_t count, loff_t *ppos) | |
1da177e4 | 480 | { |
1da177e4 | 481 | int err = 0; |
d50a6b56 | 482 | char data[128]; |
1da177e4 | 483 | |
222f1806 LC |
484 | if (!capable(CAP_NET_ADMIN)) { |
485 | err = -EPERM; | |
1da177e4 | 486 | goto out; |
222f1806 | 487 | } |
1da177e4 | 488 | |
d50a6b56 SH |
489 | if (count > sizeof(data)) |
490 | count = sizeof(data); | |
1da177e4 | 491 | |
1da177e4 | 492 | if (copy_from_user(data, buf, count)) { |
b4099fab | 493 | err = -EFAULT; |
d50a6b56 | 494 | goto out; |
222f1806 LC |
495 | } |
496 | data[count - 1] = 0; /* Make string */ | |
1da177e4 | 497 | |
222f1806 | 498 | if (!strcmp(data, "stop")) |
1da177e4 LT |
499 | pktgen_stop_all_threads_ifs(); |
500 | ||
222f1806 | 501 | else if (!strcmp(data, "start")) |
1da177e4 LT |
502 | pktgen_run_all_threads(); |
503 | ||
eb37b41c JB |
504 | else if (!strcmp(data, "reset")) |
505 | pktgen_reset_all_threads(); | |
506 | ||
222f1806 | 507 | else |
f9467eae | 508 | pr_warning("Unknown command: %s\n", data); |
1da177e4 LT |
509 | |
510 | err = count; | |
511 | ||
222f1806 LC |
512 | out: |
513 | return err; | |
1da177e4 LT |
514 | } |
515 | ||
d50a6b56 SH |
516 | static int pgctrl_open(struct inode *inode, struct file *file) |
517 | { | |
518 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
519 | } | |
520 | ||
9a32144e | 521 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
522 | .owner = THIS_MODULE, |
523 | .open = pgctrl_open, | |
524 | .read = seq_read, | |
525 | .llseek = seq_lseek, | |
526 | .write = pgctrl_write, | |
527 | .release = single_release, | |
d50a6b56 SH |
528 | }; |
529 | ||
530 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 531 | { |
648fda74 | 532 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
533 | ktime_t stopped; |
534 | u64 idle; | |
222f1806 LC |
535 | |
536 | seq_printf(seq, | |
537 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
538 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
539 | pkt_dev->max_pkt_size); | |
540 | ||
541 | seq_printf(seq, | |
fd29cf72 SH |
542 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
543 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 544 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
545 | |
546 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
547 | pkt_dev->lflow); | |
548 | ||
45b270f8 RO |
549 | seq_printf(seq, |
550 | " queue_map_min: %u queue_map_max: %u\n", | |
551 | pkt_dev->queue_map_min, | |
552 | pkt_dev->queue_map_max); | |
553 | ||
9e50e3ac JF |
554 | if (pkt_dev->skb_priority) |
555 | seq_printf(seq, " skb_priority: %u\n", | |
556 | pkt_dev->skb_priority); | |
557 | ||
222f1806 | 558 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 559 | seq_printf(seq, |
47a0200d AD |
560 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
561 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
562 | &pkt_dev->in6_saddr, | |
563 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
564 | &pkt_dev->in6_daddr, | |
565 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
566 | } else { |
567 | seq_printf(seq, | |
568 | " dst_min: %s dst_max: %s\n", | |
569 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 570 | seq_printf(seq, |
63adc6fb SH |
571 | " src_min: %s src_max: %s\n", |
572 | pkt_dev->src_min, pkt_dev->src_max); | |
573 | } | |
1da177e4 | 574 | |
222f1806 | 575 | seq_puts(seq, " src_mac: "); |
1da177e4 | 576 | |
e174961c JB |
577 | seq_printf(seq, "%pM ", |
578 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
579 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 LC |
580 | |
581 | seq_printf(seq, "dst_mac: "); | |
e174961c | 582 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
583 | |
584 | seq_printf(seq, | |
63adc6fb SH |
585 | " udp_src_min: %d udp_src_max: %d" |
586 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
587 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
588 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
589 | ||
590 | seq_printf(seq, | |
ca6549af | 591 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 592 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 593 | |
ca6549af SW |
594 | if (pkt_dev->nr_labels) { |
595 | unsigned i; | |
596 | seq_printf(seq, " mpls: "); | |
e71a4783 | 597 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
598 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
599 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
600 | } | |
601 | ||
63adc6fb | 602 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 603 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
604 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
605 | pkt_dev->vlan_cfi); | |
34954ddc | 606 | |
63adc6fb | 607 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 608 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
609 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
610 | pkt_dev->svlan_cfi); | |
34954ddc | 611 | |
63adc6fb | 612 | if (pkt_dev->tos) |
1ca7768c | 613 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 614 | |
63adc6fb | 615 | if (pkt_dev->traffic_class) |
1ca7768c | 616 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 617 | |
e99b99b4 RO |
618 | if (pkt_dev->node >= 0) |
619 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
620 | ||
ca6549af SW |
621 | seq_printf(seq, " Flags: "); |
622 | ||
222f1806 LC |
623 | if (pkt_dev->flags & F_IPV6) |
624 | seq_printf(seq, "IPV6 "); | |
1da177e4 | 625 | |
222f1806 LC |
626 | if (pkt_dev->flags & F_IPSRC_RND) |
627 | seq_printf(seq, "IPSRC_RND "); | |
1da177e4 | 628 | |
222f1806 LC |
629 | if (pkt_dev->flags & F_IPDST_RND) |
630 | seq_printf(seq, "IPDST_RND "); | |
1da177e4 | 631 | |
222f1806 LC |
632 | if (pkt_dev->flags & F_TXSIZE_RND) |
633 | seq_printf(seq, "TXSIZE_RND "); | |
1da177e4 | 634 | |
222f1806 LC |
635 | if (pkt_dev->flags & F_UDPSRC_RND) |
636 | seq_printf(seq, "UDPSRC_RND "); | |
1da177e4 | 637 | |
222f1806 LC |
638 | if (pkt_dev->flags & F_UDPDST_RND) |
639 | seq_printf(seq, "UDPDST_RND "); | |
1da177e4 | 640 | |
ca6549af SW |
641 | if (pkt_dev->flags & F_MPLS_RND) |
642 | seq_printf(seq, "MPLS_RND "); | |
643 | ||
45b270f8 RO |
644 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
645 | seq_printf(seq, "QUEUE_MAP_RND "); | |
646 | ||
e6fce5b9 RO |
647 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
648 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
649 | ||
007a531b JHS |
650 | if (pkt_dev->cflows) { |
651 | if (pkt_dev->flags & F_FLOW_SEQ) | |
652 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
653 | else | |
654 | seq_printf(seq, "FLOW_RND "); | |
655 | } | |
656 | ||
a553e4a6 JHS |
657 | #ifdef CONFIG_XFRM |
658 | if (pkt_dev->flags & F_IPSEC_ON) | |
659 | seq_printf(seq, "IPSEC "); | |
660 | #endif | |
661 | ||
222f1806 LC |
662 | if (pkt_dev->flags & F_MACSRC_RND) |
663 | seq_printf(seq, "MACSRC_RND "); | |
1da177e4 | 664 | |
222f1806 LC |
665 | if (pkt_dev->flags & F_MACDST_RND) |
666 | seq_printf(seq, "MACDST_RND "); | |
1da177e4 | 667 | |
34954ddc FF |
668 | if (pkt_dev->flags & F_VID_RND) |
669 | seq_printf(seq, "VID_RND "); | |
670 | ||
671 | if (pkt_dev->flags & F_SVID_RND) | |
672 | seq_printf(seq, "SVID_RND "); | |
673 | ||
e99b99b4 RO |
674 | if (pkt_dev->flags & F_NODE) |
675 | seq_printf(seq, "NODE_ALLOC "); | |
676 | ||
222f1806 LC |
677 | seq_puts(seq, "\n"); |
678 | ||
fd29cf72 SH |
679 | /* not really stopped, more like last-running-at */ |
680 | stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at; | |
681 | idle = pkt_dev->idle_acc; | |
682 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 683 | |
222f1806 | 684 | seq_printf(seq, |
fd29cf72 | 685 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 686 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
687 | (unsigned long long)pkt_dev->errors); |
688 | ||
689 | seq_printf(seq, | |
690 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
691 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
692 | (unsigned long long) ktime_to_us(stopped), | |
693 | (unsigned long long) idle); | |
1da177e4 | 694 | |
222f1806 LC |
695 | seq_printf(seq, |
696 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
697 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
698 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 699 | |
222f1806 | 700 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
701 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
702 | &pkt_dev->cur_in6_saddr, | |
703 | &pkt_dev->cur_in6_daddr); | |
222f1806 LC |
704 | } else |
705 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", | |
d50a6b56 | 706 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
1da177e4 | 707 | |
222f1806 | 708 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 709 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 710 | |
45b270f8 RO |
711 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
712 | ||
222f1806 | 713 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
714 | |
715 | if (pkt_dev->result[0]) | |
222f1806 | 716 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 717 | else |
222f1806 | 718 | seq_printf(seq, "Result: Idle\n"); |
1da177e4 | 719 | |
d50a6b56 | 720 | return 0; |
1da177e4 LT |
721 | } |
722 | ||
ca6549af | 723 | |
63adc6fb SH |
724 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
725 | __u32 *num) | |
ca6549af SW |
726 | { |
727 | int i = 0; | |
728 | *num = 0; | |
729 | ||
e71a4783 | 730 | for (; i < maxlen; i++) { |
82fd5b5d | 731 | int value; |
ca6549af SW |
732 | char c; |
733 | *num <<= 4; | |
734 | if (get_user(c, &user_buffer[i])) | |
735 | return -EFAULT; | |
82fd5b5d AS |
736 | value = hex_to_bin(c); |
737 | if (value >= 0) | |
738 | *num |= value; | |
ca6549af SW |
739 | else |
740 | break; | |
741 | } | |
742 | return i; | |
743 | } | |
744 | ||
222f1806 LC |
745 | static int count_trail_chars(const char __user * user_buffer, |
746 | unsigned int maxlen) | |
1da177e4 LT |
747 | { |
748 | int i; | |
749 | ||
750 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
751 | char c; |
752 | if (get_user(c, &user_buffer[i])) | |
753 | return -EFAULT; | |
754 | switch (c) { | |
1da177e4 LT |
755 | case '\"': |
756 | case '\n': | |
757 | case '\r': | |
758 | case '\t': | |
759 | case ' ': | |
760 | case '=': | |
761 | break; | |
762 | default: | |
763 | goto done; | |
3ff50b79 | 764 | } |
1da177e4 LT |
765 | } |
766 | done: | |
767 | return i; | |
768 | } | |
769 | ||
222f1806 LC |
770 | static unsigned long num_arg(const char __user * user_buffer, |
771 | unsigned long maxlen, unsigned long *num) | |
1da177e4 | 772 | { |
d6182223 | 773 | int i; |
1da177e4 | 774 | *num = 0; |
222f1806 | 775 | |
d6182223 | 776 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
777 | char c; |
778 | if (get_user(c, &user_buffer[i])) | |
779 | return -EFAULT; | |
780 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 781 | *num *= 10; |
222f1806 | 782 | *num += c - '0'; |
1da177e4 LT |
783 | } else |
784 | break; | |
785 | } | |
786 | return i; | |
787 | } | |
788 | ||
222f1806 | 789 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 790 | { |
d6182223 | 791 | int i; |
1da177e4 | 792 | |
d6182223 | 793 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
794 | char c; |
795 | if (get_user(c, &user_buffer[i])) | |
796 | return -EFAULT; | |
797 | switch (c) { | |
1da177e4 LT |
798 | case '\"': |
799 | case '\n': | |
800 | case '\r': | |
801 | case '\t': | |
802 | case ' ': | |
803 | goto done_str; | |
804 | break; | |
805 | default: | |
806 | break; | |
3ff50b79 | 807 | } |
1da177e4 LT |
808 | } |
809 | done_str: | |
1da177e4 LT |
810 | return i; |
811 | } | |
812 | ||
ca6549af SW |
813 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
814 | { | |
815 | unsigned n = 0; | |
816 | char c; | |
817 | ssize_t i = 0; | |
818 | int len; | |
819 | ||
820 | pkt_dev->nr_labels = 0; | |
821 | do { | |
822 | __u32 tmp; | |
1ca7768c | 823 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
824 | if (len <= 0) |
825 | return len; | |
826 | pkt_dev->labels[n] = htonl(tmp); | |
827 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
828 | pkt_dev->flags |= F_MPLS_RND; | |
829 | i += len; | |
830 | if (get_user(c, &buffer[i])) | |
831 | return -EFAULT; | |
832 | i++; | |
833 | n++; | |
834 | if (n >= MAX_MPLS_LABELS) | |
835 | return -E2BIG; | |
e71a4783 | 836 | } while (c == ','); |
ca6549af SW |
837 | |
838 | pkt_dev->nr_labels = n; | |
839 | return i; | |
840 | } | |
841 | ||
222f1806 LC |
842 | static ssize_t pktgen_if_write(struct file *file, |
843 | const char __user * user_buffer, size_t count, | |
844 | loff_t * offset) | |
1da177e4 | 845 | { |
8a994a71 | 846 | struct seq_file *seq = file->private_data; |
222f1806 | 847 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 848 | int i, max, len; |
1da177e4 LT |
849 | char name[16], valstr[32]; |
850 | unsigned long value = 0; | |
222f1806 LC |
851 | char *pg_result = NULL; |
852 | int tmp = 0; | |
1da177e4 | 853 | char buf[128]; |
222f1806 LC |
854 | |
855 | pg_result = &(pkt_dev->result[0]); | |
856 | ||
1da177e4 | 857 | if (count < 1) { |
f9467eae | 858 | pr_warning("wrong command format\n"); |
1da177e4 LT |
859 | return -EINVAL; |
860 | } | |
222f1806 | 861 | |
d6182223 PG |
862 | max = count; |
863 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 864 | if (tmp < 0) { |
f9467eae | 865 | pr_warning("illegal format\n"); |
222f1806 | 866 | return tmp; |
1da177e4 | 867 | } |
d6182223 | 868 | i = tmp; |
222f1806 | 869 | |
1da177e4 LT |
870 | /* Read variable name */ |
871 | ||
872 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 873 | if (len < 0) |
222f1806 | 874 | return len; |
63adc6fb | 875 | |
1da177e4 | 876 | memset(name, 0, sizeof(name)); |
222f1806 | 877 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
878 | return -EFAULT; |
879 | i += len; | |
222f1806 LC |
880 | |
881 | max = count - i; | |
1da177e4 | 882 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
883 | if (len < 0) |
884 | return len; | |
885 | ||
1da177e4 LT |
886 | i += len; |
887 | ||
888 | if (debug) { | |
86c2c0a8 | 889 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
890 | char tb[copy + 1]; |
891 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 892 | return -EFAULT; |
448d7b5d | 893 | tb[copy] = 0; |
25a8b254 | 894 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, |
222f1806 LC |
895 | (unsigned long)count, tb); |
896 | } | |
1da177e4 LT |
897 | |
898 | if (!strcmp(name, "min_pkt_size")) { | |
899 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 900 | if (len < 0) |
222f1806 | 901 | return len; |
63adc6fb | 902 | |
1da177e4 | 903 | i += len; |
222f1806 LC |
904 | if (value < 14 + 20 + 8) |
905 | value = 14 + 20 + 8; | |
906 | if (value != pkt_dev->min_pkt_size) { | |
907 | pkt_dev->min_pkt_size = value; | |
908 | pkt_dev->cur_pkt_size = value; | |
909 | } | |
910 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
911 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
912 | return count; |
913 | } | |
914 | ||
222f1806 | 915 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 916 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 917 | if (len < 0) |
222f1806 | 918 | return len; |
63adc6fb | 919 | |
1da177e4 | 920 | i += len; |
222f1806 LC |
921 | if (value < 14 + 20 + 8) |
922 | value = 14 + 20 + 8; | |
923 | if (value != pkt_dev->max_pkt_size) { | |
924 | pkt_dev->max_pkt_size = value; | |
925 | pkt_dev->cur_pkt_size = value; | |
926 | } | |
927 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
928 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
929 | return count; |
930 | } | |
931 | ||
222f1806 | 932 | /* Shortcut for min = max */ |
1da177e4 LT |
933 | |
934 | if (!strcmp(name, "pkt_size")) { | |
935 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 936 | if (len < 0) |
222f1806 | 937 | return len; |
63adc6fb | 938 | |
1da177e4 | 939 | i += len; |
222f1806 LC |
940 | if (value < 14 + 20 + 8) |
941 | value = 14 + 20 + 8; | |
942 | if (value != pkt_dev->min_pkt_size) { | |
943 | pkt_dev->min_pkt_size = value; | |
944 | pkt_dev->max_pkt_size = value; | |
945 | pkt_dev->cur_pkt_size = value; | |
946 | } | |
1da177e4 LT |
947 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
948 | return count; | |
949 | } | |
950 | ||
222f1806 | 951 | if (!strcmp(name, "debug")) { |
1da177e4 | 952 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 953 | if (len < 0) |
222f1806 | 954 | return len; |
63adc6fb | 955 | |
1da177e4 | 956 | i += len; |
222f1806 | 957 | debug = value; |
1da177e4 LT |
958 | sprintf(pg_result, "OK: debug=%u", debug); |
959 | return count; | |
960 | } | |
961 | ||
222f1806 | 962 | if (!strcmp(name, "frags")) { |
1da177e4 | 963 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 964 | if (len < 0) |
222f1806 | 965 | return len; |
63adc6fb | 966 | |
1da177e4 LT |
967 | i += len; |
968 | pkt_dev->nfrags = value; | |
969 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
970 | return count; | |
971 | } | |
972 | if (!strcmp(name, "delay")) { | |
973 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 974 | if (len < 0) |
222f1806 | 975 | return len; |
63adc6fb | 976 | |
1da177e4 | 977 | i += len; |
fd29cf72 SH |
978 | if (value == 0x7FFFFFFF) |
979 | pkt_dev->delay = ULLONG_MAX; | |
980 | else | |
9240d715 | 981 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
982 | |
983 | sprintf(pg_result, "OK: delay=%llu", | |
984 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
985 | return count; |
986 | } | |
43d28b65 DT |
987 | if (!strcmp(name, "rate")) { |
988 | len = num_arg(&user_buffer[i], 10, &value); | |
989 | if (len < 0) | |
990 | return len; | |
991 | ||
992 | i += len; | |
993 | if (!value) | |
994 | return len; | |
995 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
996 | if (debug) | |
f9467eae | 997 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
998 | |
999 | sprintf(pg_result, "OK: rate=%lu", value); | |
1000 | return count; | |
1001 | } | |
1002 | if (!strcmp(name, "ratep")) { | |
1003 | len = num_arg(&user_buffer[i], 10, &value); | |
1004 | if (len < 0) | |
1005 | return len; | |
1006 | ||
1007 | i += len; | |
1008 | if (!value) | |
1009 | return len; | |
1010 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1011 | if (debug) | |
f9467eae | 1012 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1013 | |
1014 | sprintf(pg_result, "OK: rate=%lu", value); | |
1015 | return count; | |
1016 | } | |
222f1806 | 1017 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1018 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1019 | if (len < 0) |
222f1806 | 1020 | return len; |
63adc6fb | 1021 | |
1da177e4 | 1022 | i += len; |
222f1806 LC |
1023 | if (value != pkt_dev->udp_src_min) { |
1024 | pkt_dev->udp_src_min = value; | |
1025 | pkt_dev->cur_udp_src = value; | |
1026 | } | |
1da177e4 LT |
1027 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1028 | return count; | |
1029 | } | |
222f1806 | 1030 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1031 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1032 | if (len < 0) |
222f1806 | 1033 | return len; |
63adc6fb | 1034 | |
1da177e4 | 1035 | i += len; |
222f1806 LC |
1036 | if (value != pkt_dev->udp_dst_min) { |
1037 | pkt_dev->udp_dst_min = value; | |
1038 | pkt_dev->cur_udp_dst = value; | |
1039 | } | |
1da177e4 LT |
1040 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1041 | return count; | |
1042 | } | |
222f1806 | 1043 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1044 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1045 | if (len < 0) |
222f1806 | 1046 | return len; |
63adc6fb | 1047 | |
1da177e4 | 1048 | i += len; |
222f1806 LC |
1049 | if (value != pkt_dev->udp_src_max) { |
1050 | pkt_dev->udp_src_max = value; | |
1051 | pkt_dev->cur_udp_src = value; | |
1052 | } | |
1da177e4 LT |
1053 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1054 | return count; | |
1055 | } | |
222f1806 | 1056 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1057 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1058 | if (len < 0) |
222f1806 | 1059 | return len; |
63adc6fb | 1060 | |
1da177e4 | 1061 | i += len; |
222f1806 LC |
1062 | if (value != pkt_dev->udp_dst_max) { |
1063 | pkt_dev->udp_dst_max = value; | |
1064 | pkt_dev->cur_udp_dst = value; | |
1065 | } | |
1da177e4 LT |
1066 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1067 | return count; | |
1068 | } | |
1069 | if (!strcmp(name, "clone_skb")) { | |
1070 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1071 | if (len < 0) |
222f1806 | 1072 | return len; |
d8873315 NH |
1073 | if ((value > 0) && |
1074 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
1075 | return -ENOTSUPP; | |
1da177e4 | 1076 | i += len; |
222f1806 LC |
1077 | pkt_dev->clone_skb = value; |
1078 | ||
1da177e4 LT |
1079 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1080 | return count; | |
1081 | } | |
1082 | if (!strcmp(name, "count")) { | |
1083 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1084 | if (len < 0) |
222f1806 | 1085 | return len; |
63adc6fb | 1086 | |
1da177e4 LT |
1087 | i += len; |
1088 | pkt_dev->count = value; | |
1089 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1090 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1091 | return count; |
1092 | } | |
1093 | if (!strcmp(name, "src_mac_count")) { | |
1094 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1095 | if (len < 0) |
222f1806 | 1096 | return len; |
63adc6fb | 1097 | |
1da177e4 LT |
1098 | i += len; |
1099 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1100 | pkt_dev->src_mac_count = value; |
1101 | pkt_dev->cur_src_mac_offset = 0; | |
1102 | } | |
1103 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1104 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1105 | return count; |
1106 | } | |
1107 | if (!strcmp(name, "dst_mac_count")) { | |
1108 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1109 | if (len < 0) |
222f1806 | 1110 | return len; |
63adc6fb | 1111 | |
1da177e4 LT |
1112 | i += len; |
1113 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1114 | pkt_dev->dst_mac_count = value; |
1115 | pkt_dev->cur_dst_mac_offset = 0; | |
1116 | } | |
1117 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1118 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1119 | return count; |
1120 | } | |
e99b99b4 RO |
1121 | if (!strcmp(name, "node")) { |
1122 | len = num_arg(&user_buffer[i], 10, &value); | |
1123 | if (len < 0) | |
1124 | return len; | |
1125 | ||
1126 | i += len; | |
1127 | ||
1128 | if (node_possible(value)) { | |
1129 | pkt_dev->node = value; | |
1130 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1131 | if (pkt_dev->page) { |
1132 | put_page(pkt_dev->page); | |
1133 | pkt_dev->page = NULL; | |
1134 | } | |
e99b99b4 RO |
1135 | } |
1136 | else | |
1137 | sprintf(pg_result, "ERROR: node not possible"); | |
1138 | return count; | |
1139 | } | |
1da177e4 | 1140 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1141 | char f[32]; |
1142 | memset(f, 0, 32); | |
1da177e4 | 1143 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1144 | if (len < 0) |
222f1806 | 1145 | return len; |
63adc6fb | 1146 | |
1da177e4 LT |
1147 | if (copy_from_user(f, &user_buffer[i], len)) |
1148 | return -EFAULT; | |
1149 | i += len; | |
222f1806 LC |
1150 | if (strcmp(f, "IPSRC_RND") == 0) |
1151 | pkt_dev->flags |= F_IPSRC_RND; | |
1152 | ||
1153 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1154 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1155 | ||
1156 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1157 | pkt_dev->flags |= F_TXSIZE_RND; | |
1158 | ||
1159 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1160 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1161 | ||
1162 | else if (strcmp(f, "IPDST_RND") == 0) | |
1163 | pkt_dev->flags |= F_IPDST_RND; | |
1164 | ||
1165 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1166 | pkt_dev->flags &= ~F_IPDST_RND; | |
1167 | ||
1168 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1169 | pkt_dev->flags |= F_UDPSRC_RND; | |
1170 | ||
1171 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1172 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1173 | ||
1174 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1175 | pkt_dev->flags |= F_UDPDST_RND; | |
1176 | ||
1177 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1178 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1179 | ||
1180 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1181 | pkt_dev->flags |= F_MACSRC_RND; | |
1182 | ||
1183 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1184 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1185 | ||
1186 | else if (strcmp(f, "MACDST_RND") == 0) | |
1187 | pkt_dev->flags |= F_MACDST_RND; | |
1188 | ||
1189 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1190 | pkt_dev->flags &= ~F_MACDST_RND; | |
1191 | ||
ca6549af SW |
1192 | else if (strcmp(f, "MPLS_RND") == 0) |
1193 | pkt_dev->flags |= F_MPLS_RND; | |
1194 | ||
1195 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1196 | pkt_dev->flags &= ~F_MPLS_RND; | |
1197 | ||
34954ddc FF |
1198 | else if (strcmp(f, "VID_RND") == 0) |
1199 | pkt_dev->flags |= F_VID_RND; | |
1200 | ||
1201 | else if (strcmp(f, "!VID_RND") == 0) | |
1202 | pkt_dev->flags &= ~F_VID_RND; | |
1203 | ||
1204 | else if (strcmp(f, "SVID_RND") == 0) | |
1205 | pkt_dev->flags |= F_SVID_RND; | |
1206 | ||
1207 | else if (strcmp(f, "!SVID_RND") == 0) | |
1208 | pkt_dev->flags &= ~F_SVID_RND; | |
1209 | ||
007a531b JHS |
1210 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1211 | pkt_dev->flags |= F_FLOW_SEQ; | |
1212 | ||
45b270f8 RO |
1213 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1214 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1215 | ||
1216 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1217 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1218 | |
1219 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1220 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1221 | ||
1222 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1223 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1224 | #ifdef CONFIG_XFRM |
1225 | else if (strcmp(f, "IPSEC") == 0) | |
1226 | pkt_dev->flags |= F_IPSEC_ON; | |
1227 | #endif | |
1228 | ||
1ca7768c FF |
1229 | else if (strcmp(f, "!IPV6") == 0) |
1230 | pkt_dev->flags &= ~F_IPV6; | |
1231 | ||
e99b99b4 RO |
1232 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1233 | pkt_dev->flags |= F_NODE; | |
1234 | ||
1235 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1236 | pkt_dev->flags &= ~F_NODE; | |
1237 | ||
222f1806 LC |
1238 | else { |
1239 | sprintf(pg_result, | |
1240 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1241 | f, | |
1ca7768c | 1242 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1243 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1244 | return count; |
1245 | } | |
1da177e4 LT |
1246 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1247 | return count; | |
1248 | } | |
1249 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1250 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1251 | if (len < 0) |
222f1806 | 1252 | return len; |
1da177e4 | 1253 | |
222f1806 | 1254 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1255 | return -EFAULT; |
222f1806 LC |
1256 | buf[len] = 0; |
1257 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1258 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1259 | strncpy(pkt_dev->dst_min, buf, len); | |
1260 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1261 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1262 | } | |
1263 | if (debug) | |
25a8b254 | 1264 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", |
222f1806 LC |
1265 | pkt_dev->dst_min); |
1266 | i += len; | |
1da177e4 LT |
1267 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1268 | return count; | |
1269 | } | |
1270 | if (!strcmp(name, "dst_max")) { | |
1271 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1272 | if (len < 0) |
222f1806 | 1273 | return len; |
63adc6fb | 1274 | |
1da177e4 | 1275 | |
222f1806 | 1276 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1277 | return -EFAULT; |
1278 | ||
222f1806 LC |
1279 | buf[len] = 0; |
1280 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1281 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1282 | strncpy(pkt_dev->dst_max, buf, len); | |
1283 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1284 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1285 | } | |
1286 | if (debug) | |
25a8b254 | 1287 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", |
222f1806 | 1288 | pkt_dev->dst_max); |
1da177e4 LT |
1289 | i += len; |
1290 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1291 | return count; | |
1292 | } | |
1293 | if (!strcmp(name, "dst6")) { | |
1294 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1295 | if (len < 0) |
1296 | return len; | |
1da177e4 LT |
1297 | |
1298 | pkt_dev->flags |= F_IPV6; | |
1299 | ||
222f1806 | 1300 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1301 | return -EFAULT; |
222f1806 | 1302 | buf[len] = 0; |
1da177e4 LT |
1303 | |
1304 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
47a0200d | 1305 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1306 | |
4e3fd7a0 | 1307 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1308 | |
222f1806 | 1309 | if (debug) |
25a8b254 | 1310 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); |
1da177e4 | 1311 | |
222f1806 | 1312 | i += len; |
1da177e4 LT |
1313 | sprintf(pg_result, "OK: dst6=%s", buf); |
1314 | return count; | |
1315 | } | |
1316 | if (!strcmp(name, "dst6_min")) { | |
1317 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1318 | if (len < 0) |
1319 | return len; | |
1da177e4 LT |
1320 | |
1321 | pkt_dev->flags |= F_IPV6; | |
1322 | ||
222f1806 | 1323 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1324 | return -EFAULT; |
222f1806 | 1325 | buf[len] = 0; |
1da177e4 LT |
1326 | |
1327 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
47a0200d | 1328 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1329 | |
4e3fd7a0 | 1330 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1331 | if (debug) |
25a8b254 | 1332 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); |
1da177e4 | 1333 | |
222f1806 | 1334 | i += len; |
1da177e4 LT |
1335 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1336 | return count; | |
1337 | } | |
1338 | if (!strcmp(name, "dst6_max")) { | |
1339 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1340 | if (len < 0) |
1341 | return len; | |
1da177e4 LT |
1342 | |
1343 | pkt_dev->flags |= F_IPV6; | |
1344 | ||
222f1806 | 1345 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1346 | return -EFAULT; |
222f1806 | 1347 | buf[len] = 0; |
1da177e4 LT |
1348 | |
1349 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
47a0200d | 1350 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1351 | |
222f1806 | 1352 | if (debug) |
25a8b254 | 1353 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); |
1da177e4 | 1354 | |
222f1806 | 1355 | i += len; |
1da177e4 LT |
1356 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1357 | return count; | |
1358 | } | |
1359 | if (!strcmp(name, "src6")) { | |
1360 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1361 | if (len < 0) |
1362 | return len; | |
1da177e4 LT |
1363 | |
1364 | pkt_dev->flags |= F_IPV6; | |
1365 | ||
222f1806 | 1366 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1367 | return -EFAULT; |
222f1806 | 1368 | buf[len] = 0; |
1da177e4 LT |
1369 | |
1370 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
47a0200d | 1371 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1372 | |
4e3fd7a0 | 1373 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1374 | |
222f1806 | 1375 | if (debug) |
25a8b254 | 1376 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); |
222f1806 LC |
1377 | |
1378 | i += len; | |
1da177e4 LT |
1379 | sprintf(pg_result, "OK: src6=%s", buf); |
1380 | return count; | |
1381 | } | |
1382 | if (!strcmp(name, "src_min")) { | |
1383 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1384 | if (len < 0) |
222f1806 | 1385 | return len; |
63adc6fb | 1386 | |
222f1806 | 1387 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1388 | return -EFAULT; |
222f1806 LC |
1389 | buf[len] = 0; |
1390 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1391 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1392 | strncpy(pkt_dev->src_min, buf, len); | |
1393 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1394 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1395 | } | |
1396 | if (debug) | |
25a8b254 | 1397 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", |
222f1806 | 1398 | pkt_dev->src_min); |
1da177e4 LT |
1399 | i += len; |
1400 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1401 | return count; | |
1402 | } | |
1403 | if (!strcmp(name, "src_max")) { | |
1404 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1405 | if (len < 0) |
222f1806 | 1406 | return len; |
63adc6fb | 1407 | |
222f1806 | 1408 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1409 | return -EFAULT; |
222f1806 LC |
1410 | buf[len] = 0; |
1411 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1412 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1413 | strncpy(pkt_dev->src_max, buf, len); | |
1414 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1415 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1416 | } | |
1417 | if (debug) | |
25a8b254 | 1418 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", |
222f1806 | 1419 | pkt_dev->src_max); |
1da177e4 LT |
1420 | i += len; |
1421 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1422 | return count; | |
1423 | } | |
1424 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1425 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1426 | if (len < 0) |
222f1806 | 1427 | return len; |
63adc6fb | 1428 | |
1da177e4 | 1429 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1430 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1431 | return -EFAULT; |
1da177e4 | 1432 | |
4940fc88 AD |
1433 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1434 | return -EINVAL; | |
1da177e4 | 1435 | /* Set up Dest MAC */ |
4940fc88 | 1436 | memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1437 | |
4940fc88 | 1438 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1439 | return count; |
1440 | } | |
1441 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1442 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1443 | if (len < 0) |
222f1806 | 1444 | return len; |
63adc6fb | 1445 | |
1da177e4 | 1446 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1447 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1448 | return -EFAULT; |
1da177e4 | 1449 | |
4940fc88 AD |
1450 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1451 | return -EINVAL; | |
ce5d0b47 | 1452 | /* Set up Src MAC */ |
4940fc88 | 1453 | memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN); |
ce5d0b47 | 1454 | |
4940fc88 | 1455 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1456 | return count; |
1457 | } | |
1458 | ||
222f1806 LC |
1459 | if (!strcmp(name, "clear_counters")) { |
1460 | pktgen_clear_counters(pkt_dev); | |
1461 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1462 | return count; | |
1463 | } | |
1da177e4 LT |
1464 | |
1465 | if (!strcmp(name, "flows")) { | |
1466 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1467 | if (len < 0) |
222f1806 | 1468 | return len; |
63adc6fb | 1469 | |
1da177e4 LT |
1470 | i += len; |
1471 | if (value > MAX_CFLOWS) | |
1472 | value = MAX_CFLOWS; | |
1473 | ||
1474 | pkt_dev->cflows = value; | |
1475 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1476 | return count; | |
1477 | } | |
1478 | ||
1479 | if (!strcmp(name, "flowlen")) { | |
1480 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1481 | if (len < 0) |
222f1806 | 1482 | return len; |
63adc6fb | 1483 | |
1da177e4 LT |
1484 | i += len; |
1485 | pkt_dev->lflow = value; | |
1486 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1487 | return count; | |
1488 | } | |
222f1806 | 1489 | |
45b270f8 RO |
1490 | if (!strcmp(name, "queue_map_min")) { |
1491 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1492 | if (len < 0) |
45b270f8 | 1493 | return len; |
63adc6fb | 1494 | |
45b270f8 RO |
1495 | i += len; |
1496 | pkt_dev->queue_map_min = value; | |
1497 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1498 | return count; | |
1499 | } | |
1500 | ||
1501 | if (!strcmp(name, "queue_map_max")) { | |
1502 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1503 | if (len < 0) |
45b270f8 | 1504 | return len; |
63adc6fb | 1505 | |
45b270f8 RO |
1506 | i += len; |
1507 | pkt_dev->queue_map_max = value; | |
1508 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1509 | return count; | |
1510 | } | |
1511 | ||
ca6549af | 1512 | if (!strcmp(name, "mpls")) { |
cfcabdcc SH |
1513 | unsigned n, cnt; |
1514 | ||
ca6549af | 1515 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1516 | if (len < 0) |
1517 | return len; | |
ca6549af | 1518 | i += len; |
cfcabdcc | 1519 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1520 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1521 | cnt += sprintf(pg_result + cnt, |
1522 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1523 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1524 | |
1525 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1526 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1527 | pkt_dev->svlan_id = 0xffff; | |
1528 | ||
1529 | if (debug) | |
25a8b254 | 1530 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1531 | } |
1532 | return count; | |
1533 | } | |
1534 | ||
1535 | if (!strcmp(name, "vlan_id")) { | |
1536 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1537 | if (len < 0) |
34954ddc | 1538 | return len; |
63adc6fb | 1539 | |
34954ddc FF |
1540 | i += len; |
1541 | if (value <= 4095) { | |
1542 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1543 | ||
1544 | if (debug) | |
25a8b254 | 1545 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); |
34954ddc FF |
1546 | |
1547 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1548 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1549 | |
1550 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1551 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1552 | } else { | |
1553 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1554 | pkt_dev->svlan_id = 0xffff; | |
1555 | ||
1556 | if (debug) | |
25a8b254 | 1557 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1558 | } |
1559 | return count; | |
1560 | } | |
1561 | ||
1562 | if (!strcmp(name, "vlan_p")) { | |
1563 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1564 | if (len < 0) |
34954ddc | 1565 | return len; |
63adc6fb | 1566 | |
34954ddc FF |
1567 | i += len; |
1568 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1569 | pkt_dev->vlan_p = value; | |
1570 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1571 | } else { | |
1572 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1573 | } | |
1574 | return count; | |
1575 | } | |
1576 | ||
1577 | if (!strcmp(name, "vlan_cfi")) { | |
1578 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1579 | if (len < 0) |
34954ddc | 1580 | return len; |
63adc6fb | 1581 | |
34954ddc FF |
1582 | i += len; |
1583 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1584 | pkt_dev->vlan_cfi = value; | |
1585 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1586 | } else { | |
1587 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1588 | } | |
1589 | return count; | |
1590 | } | |
1591 | ||
1592 | if (!strcmp(name, "svlan_id")) { | |
1593 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1594 | if (len < 0) |
34954ddc | 1595 | return len; |
63adc6fb | 1596 | |
34954ddc FF |
1597 | i += len; |
1598 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1599 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1600 | ||
1601 | if (debug) | |
25a8b254 | 1602 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); |
34954ddc FF |
1603 | |
1604 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1605 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1606 | |
1607 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1608 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1609 | } else { | |
1610 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1611 | pkt_dev->svlan_id = 0xffff; | |
1612 | ||
1613 | if (debug) | |
25a8b254 | 1614 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1615 | } |
1616 | return count; | |
1617 | } | |
1618 | ||
1619 | if (!strcmp(name, "svlan_p")) { | |
1620 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1621 | if (len < 0) |
34954ddc | 1622 | return len; |
63adc6fb | 1623 | |
34954ddc FF |
1624 | i += len; |
1625 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1626 | pkt_dev->svlan_p = value; | |
1627 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1628 | } else { | |
1629 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1630 | } | |
1631 | return count; | |
1632 | } | |
1633 | ||
1634 | if (!strcmp(name, "svlan_cfi")) { | |
1635 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1636 | if (len < 0) |
34954ddc | 1637 | return len; |
63adc6fb | 1638 | |
34954ddc FF |
1639 | i += len; |
1640 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1641 | pkt_dev->svlan_cfi = value; | |
1642 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1643 | } else { | |
1644 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1645 | } | |
ca6549af SW |
1646 | return count; |
1647 | } | |
1648 | ||
1ca7768c FF |
1649 | if (!strcmp(name, "tos")) { |
1650 | __u32 tmp_value = 0; | |
1651 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1652 | if (len < 0) |
1ca7768c | 1653 | return len; |
63adc6fb | 1654 | |
1ca7768c FF |
1655 | i += len; |
1656 | if (len == 2) { | |
1657 | pkt_dev->tos = tmp_value; | |
1658 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1659 | } else { | |
1660 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1661 | } | |
1662 | return count; | |
1663 | } | |
1664 | ||
1665 | if (!strcmp(name, "traffic_class")) { | |
1666 | __u32 tmp_value = 0; | |
1667 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1668 | if (len < 0) |
1ca7768c | 1669 | return len; |
63adc6fb | 1670 | |
1ca7768c FF |
1671 | i += len; |
1672 | if (len == 2) { | |
1673 | pkt_dev->traffic_class = tmp_value; | |
1674 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1675 | } else { | |
1676 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1677 | } | |
1678 | return count; | |
1679 | } | |
1680 | ||
9e50e3ac JF |
1681 | if (!strcmp(name, "skb_priority")) { |
1682 | len = num_arg(&user_buffer[i], 9, &value); | |
1683 | if (len < 0) | |
1684 | return len; | |
1685 | ||
1686 | i += len; | |
1687 | pkt_dev->skb_priority = value; | |
1688 | sprintf(pg_result, "OK: skb_priority=%i", | |
1689 | pkt_dev->skb_priority); | |
1690 | return count; | |
1691 | } | |
1692 | ||
1da177e4 LT |
1693 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1694 | return -EINVAL; | |
1695 | } | |
1696 | ||
d50a6b56 | 1697 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1698 | { |
d50a6b56 SH |
1699 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1700 | } | |
1da177e4 | 1701 | |
9a32144e | 1702 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1703 | .owner = THIS_MODULE, |
1704 | .open = pktgen_if_open, | |
1705 | .read = seq_read, | |
1706 | .llseek = seq_lseek, | |
1707 | .write = pktgen_if_write, | |
1708 | .release = single_release, | |
d50a6b56 | 1709 | }; |
1da177e4 | 1710 | |
d50a6b56 SH |
1711 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1712 | { | |
222f1806 | 1713 | struct pktgen_thread *t = seq->private; |
648fda74 | 1714 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1715 | |
1716 | BUG_ON(!t); | |
1da177e4 | 1717 | |
222f1806 | 1718 | seq_printf(seq, "Running: "); |
1da177e4 | 1719 | |
222f1806 | 1720 | if_lock(t); |
c26a8016 | 1721 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1722 | if (pkt_dev->running) |
593f63b0 | 1723 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1724 | |
222f1806 LC |
1725 | seq_printf(seq, "\nStopped: "); |
1726 | ||
c26a8016 | 1727 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1728 | if (!pkt_dev->running) |
593f63b0 | 1729 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1730 | |
1731 | if (t->result[0]) | |
d50a6b56 | 1732 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1733 | else |
d50a6b56 | 1734 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1735 | |
222f1806 | 1736 | if_unlock(t); |
1da177e4 | 1737 | |
d50a6b56 | 1738 | return 0; |
1da177e4 LT |
1739 | } |
1740 | ||
d50a6b56 | 1741 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1742 | const char __user * user_buffer, |
1743 | size_t count, loff_t * offset) | |
1da177e4 | 1744 | { |
8a994a71 | 1745 | struct seq_file *seq = file->private_data; |
222f1806 | 1746 | struct pktgen_thread *t = seq->private; |
d6182223 | 1747 | int i, max, len, ret; |
1da177e4 | 1748 | char name[40]; |
222f1806 | 1749 | char *pg_result; |
d50a6b56 | 1750 | |
1da177e4 | 1751 | if (count < 1) { |
222f1806 | 1752 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1753 | return -EINVAL; |
1754 | } | |
d50a6b56 | 1755 | |
d6182223 PG |
1756 | max = count; |
1757 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1758 | if (len < 0) |
d50a6b56 SH |
1759 | return len; |
1760 | ||
d6182223 | 1761 | i = len; |
d50a6b56 | 1762 | |
1da177e4 LT |
1763 | /* Read variable name */ |
1764 | ||
1765 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1766 | if (len < 0) |
d50a6b56 | 1767 | return len; |
222f1806 | 1768 | |
1da177e4 LT |
1769 | memset(name, 0, sizeof(name)); |
1770 | if (copy_from_user(name, &user_buffer[i], len)) | |
1771 | return -EFAULT; | |
1772 | i += len; | |
d50a6b56 | 1773 | |
222f1806 | 1774 | max = count - i; |
1da177e4 | 1775 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1776 | if (len < 0) |
d50a6b56 SH |
1777 | return len; |
1778 | ||
1da177e4 LT |
1779 | i += len; |
1780 | ||
d50a6b56 | 1781 | if (debug) |
25a8b254 DM |
1782 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", |
1783 | name, (unsigned long)count); | |
1da177e4 | 1784 | |
222f1806 | 1785 | if (!t) { |
f9467eae | 1786 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1787 | ret = -EINVAL; |
1788 | goto out; | |
1789 | } | |
1790 | ||
1791 | pg_result = &(t->result[0]); | |
1792 | ||
222f1806 LC |
1793 | if (!strcmp(name, "add_device")) { |
1794 | char f[32]; | |
1795 | memset(f, 0, 32); | |
1da177e4 | 1796 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1797 | if (len < 0) { |
1798 | ret = len; | |
1da177e4 LT |
1799 | goto out; |
1800 | } | |
222f1806 | 1801 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1802 | return -EFAULT; |
1803 | i += len; | |
6146e6a4 | 1804 | mutex_lock(&pktgen_thread_lock); |
222f1806 | 1805 | pktgen_add_device(t, f); |
6146e6a4 | 1806 | mutex_unlock(&pktgen_thread_lock); |
222f1806 LC |
1807 | ret = count; |
1808 | sprintf(pg_result, "OK: add_device=%s", f); | |
1da177e4 LT |
1809 | goto out; |
1810 | } | |
1811 | ||
222f1806 | 1812 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1813 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1814 | t->control |= T_REMDEVALL; |
6146e6a4 | 1815 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1816 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1817 | ret = count; |
222f1806 | 1818 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1819 | goto out; |
1820 | } | |
1821 | ||
222f1806 | 1822 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1823 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1824 | ret = count; |
1da177e4 LT |
1825 | goto out; |
1826 | } | |
1827 | ||
1828 | ret = -EINVAL; | |
222f1806 | 1829 | out: |
1da177e4 LT |
1830 | return ret; |
1831 | } | |
1832 | ||
d50a6b56 | 1833 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1834 | { |
d50a6b56 | 1835 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1836 | } |
1837 | ||
9a32144e | 1838 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1839 | .owner = THIS_MODULE, |
1840 | .open = pktgen_thread_open, | |
1841 | .read = seq_read, | |
1842 | .llseek = seq_lseek, | |
1843 | .write = pktgen_thread_write, | |
1844 | .release = single_release, | |
d50a6b56 | 1845 | }; |
1da177e4 LT |
1846 | |
1847 | /* Think find or remove for NN */ | |
222f1806 | 1848 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) |
1da177e4 LT |
1849 | { |
1850 | struct pktgen_thread *t; | |
1851 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1852 | bool exact = (remove == FIND); |
1da177e4 | 1853 | |
cdcdbe0b | 1854 | list_for_each_entry(t, &pktgen_threads, th_list) { |
3e984840 | 1855 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1856 | if (pkt_dev) { |
222f1806 LC |
1857 | if (remove) { |
1858 | if_lock(t); | |
1859 | pkt_dev->removal_mark = 1; | |
1860 | t->control |= T_REMDEV; | |
1861 | if_unlock(t); | |
1862 | } | |
1da177e4 LT |
1863 | break; |
1864 | } | |
1da177e4 | 1865 | } |
222f1806 | 1866 | return pkt_dev; |
1da177e4 LT |
1867 | } |
1868 | ||
95ed63f7 AK |
1869 | /* |
1870 | * mark a device for removal | |
1871 | */ | |
39df232f | 1872 | static void pktgen_mark_device(const char *ifname) |
1da177e4 LT |
1873 | { |
1874 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1875 | const int max_tries = 10, msec_per_try = 125; |
1876 | int i = 0; | |
95ed63f7 | 1877 | |
6146e6a4 | 1878 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1879 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1880 | |
222f1806 | 1881 | while (1) { |
95ed63f7 AK |
1882 | |
1883 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
222f1806 LC |
1884 | if (pkt_dev == NULL) |
1885 | break; /* success */ | |
95ed63f7 | 1886 | |
6146e6a4 | 1887 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1888 | pr_debug("%s: waiting for %s to disappear....\n", |
1889 | __func__, ifname); | |
95ed63f7 | 1890 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1891 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1892 | |
1893 | if (++i >= max_tries) { | |
f9467eae JP |
1894 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1895 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1896 | break; |
1897 | } | |
1898 | ||
1899 | } | |
1900 | ||
6146e6a4 | 1901 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1902 | } |
95ed63f7 | 1903 | |
39df232f SH |
1904 | static void pktgen_change_name(struct net_device *dev) |
1905 | { | |
1906 | struct pktgen_thread *t; | |
1907 | ||
1908 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1909 | struct pktgen_dev *pkt_dev; | |
1910 | ||
1911 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1912 | if (pkt_dev->odev != dev) | |
1913 | continue; | |
1914 | ||
1915 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1916 | ||
2975315b AD |
1917 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
1918 | pg_proc_dir, | |
1919 | &pktgen_if_fops, | |
1920 | pkt_dev); | |
39df232f | 1921 | if (!pkt_dev->entry) |
f9467eae JP |
1922 | pr_err("can't move proc entry for '%s'\n", |
1923 | dev->name); | |
39df232f SH |
1924 | break; |
1925 | } | |
1926 | } | |
1da177e4 LT |
1927 | } |
1928 | ||
222f1806 LC |
1929 | static int pktgen_device_event(struct notifier_block *unused, |
1930 | unsigned long event, void *ptr) | |
1da177e4 | 1931 | { |
39df232f | 1932 | struct net_device *dev = ptr; |
1da177e4 | 1933 | |
721499e8 | 1934 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
1935 | return NOTIFY_DONE; |
1936 | ||
1da177e4 LT |
1937 | /* It is OK that we do not hold the group lock right now, |
1938 | * as we run under the RTNL lock. | |
1939 | */ | |
1940 | ||
1941 | switch (event) { | |
39df232f SH |
1942 | case NETDEV_CHANGENAME: |
1943 | pktgen_change_name(dev); | |
1da177e4 | 1944 | break; |
222f1806 | 1945 | |
1da177e4 | 1946 | case NETDEV_UNREGISTER: |
222f1806 | 1947 | pktgen_mark_device(dev->name); |
1da177e4 | 1948 | break; |
3ff50b79 | 1949 | } |
1da177e4 LT |
1950 | |
1951 | return NOTIFY_DONE; | |
1952 | } | |
1953 | ||
63adc6fb SH |
1954 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, |
1955 | const char *ifname) | |
e6fce5b9 RO |
1956 | { |
1957 | char b[IFNAMSIZ+5]; | |
d6182223 | 1958 | int i; |
e6fce5b9 | 1959 | |
63adc6fb SH |
1960 | for (i = 0; ifname[i] != '@'; i++) { |
1961 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1962 | break; |
1963 | ||
1964 | b[i] = ifname[i]; | |
1965 | } | |
1966 | b[i] = 0; | |
1967 | ||
1968 | return dev_get_by_name(&init_net, b); | |
1969 | } | |
1970 | ||
1971 | ||
1da177e4 LT |
1972 | /* Associate pktgen_dev with a device. */ |
1973 | ||
39df232f | 1974 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) |
222f1806 | 1975 | { |
1da177e4 | 1976 | struct net_device *odev; |
39df232f | 1977 | int err; |
1da177e4 LT |
1978 | |
1979 | /* Clean old setups */ | |
1da177e4 LT |
1980 | if (pkt_dev->odev) { |
1981 | dev_put(pkt_dev->odev); | |
222f1806 LC |
1982 | pkt_dev->odev = NULL; |
1983 | } | |
1da177e4 | 1984 | |
e6fce5b9 | 1985 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); |
1da177e4 | 1986 | if (!odev) { |
f9467eae | 1987 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 1988 | return -ENODEV; |
1da177e4 | 1989 | } |
39df232f | 1990 | |
1da177e4 | 1991 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 1992 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
1993 | err = -EINVAL; |
1994 | } else if (!netif_running(odev)) { | |
f9467eae | 1995 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
1996 | err = -ENETDOWN; |
1997 | } else { | |
1998 | pkt_dev->odev = odev; | |
1999 | return 0; | |
1da177e4 | 2000 | } |
1da177e4 | 2001 | |
1da177e4 | 2002 | dev_put(odev); |
39df232f | 2003 | return err; |
1da177e4 LT |
2004 | } |
2005 | ||
2006 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2007 | * structure to have the right information to create/send packets | |
2008 | */ | |
2009 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2010 | { | |
64c00d81 AG |
2011 | int ntxq; |
2012 | ||
222f1806 | 2013 | if (!pkt_dev->odev) { |
f9467eae | 2014 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2015 | sprintf(pkt_dev->result, |
2016 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2017 | return; | |
2018 | } | |
2019 | ||
64c00d81 AG |
2020 | /* make sure that we don't pick a non-existing transmit queue */ |
2021 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2022 | |
64c00d81 | 2023 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2024 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2025 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2026 | pkt_dev->odevname); | |
26e29eed | 2027 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2028 | } |
88271660 | 2029 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2030 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2031 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2032 | pkt_dev->odevname); | |
26e29eed | 2033 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2034 | } |
2035 | ||
222f1806 | 2036 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2037 | |
f404e9a6 | 2038 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2039 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2040 | |
222f1806 | 2041 | /* Set up Dest MAC */ |
f404e9a6 | 2042 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2043 | |
222f1806 LC |
2044 | /* Set up pkt size */ |
2045 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2046 | ||
2047 | if (pkt_dev->flags & F_IPV6) { | |
1da177e4 | 2048 | /* |
4ec93edb | 2049 | * Skip this automatic address setting until locks or functions |
1da177e4 LT |
2050 | * gets exported |
2051 | */ | |
2052 | ||
2053 | #ifdef NOTNOW | |
222f1806 | 2054 | int i, set = 0, err = 1; |
1da177e4 LT |
2055 | struct inet6_dev *idev; |
2056 | ||
222f1806 LC |
2057 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2058 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2059 | set = 1; |
2060 | break; | |
2061 | } | |
2062 | ||
222f1806 LC |
2063 | if (!set) { |
2064 | ||
1da177e4 LT |
2065 | /* |
2066 | * Use linklevel address if unconfigured. | |
2067 | * | |
2068 | * use ipv6_get_lladdr if/when it's get exported | |
2069 | */ | |
2070 | ||
8814c4b5 | 2071 | rcu_read_lock(); |
63adc6fb SH |
2072 | idev = __in6_dev_get(pkt_dev->odev); |
2073 | if (idev) { | |
1da177e4 LT |
2074 | struct inet6_ifaddr *ifp; |
2075 | ||
2076 | read_lock_bh(&idev->lock); | |
222f1806 LC |
2077 | for (ifp = idev->addr_list; ifp; |
2078 | ifp = ifp->if_next) { | |
f64f9e71 JP |
2079 | if (ifp->scope == IFA_LINK && |
2080 | !(ifp->flags & IFA_F_TENTATIVE)) { | |
4e3fd7a0 | 2081 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2082 | err = 0; |
2083 | break; | |
2084 | } | |
2085 | } | |
2086 | read_unlock_bh(&idev->lock); | |
2087 | } | |
8814c4b5 | 2088 | rcu_read_unlock(); |
222f1806 | 2089 | if (err) |
f9467eae | 2090 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 LT |
2091 | } |
2092 | #endif | |
222f1806 | 2093 | } else { |
1da177e4 LT |
2094 | pkt_dev->saddr_min = 0; |
2095 | pkt_dev->saddr_max = 0; | |
2096 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2097 | |
2098 | struct in_device *in_dev; | |
1da177e4 LT |
2099 | |
2100 | rcu_read_lock(); | |
e5ed6399 | 2101 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2102 | if (in_dev) { |
2103 | if (in_dev->ifa_list) { | |
222f1806 LC |
2104 | pkt_dev->saddr_min = |
2105 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2106 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2107 | } | |
1da177e4 LT |
2108 | } |
2109 | rcu_read_unlock(); | |
222f1806 | 2110 | } else { |
1da177e4 LT |
2111 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2112 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2113 | } | |
2114 | ||
2115 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2116 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2117 | } | |
222f1806 LC |
2118 | /* Initialize current values. */ |
2119 | pkt_dev->cur_dst_mac_offset = 0; | |
2120 | pkt_dev->cur_src_mac_offset = 0; | |
2121 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2122 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2123 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2124 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2125 | pkt_dev->nflows = 0; |
2126 | } | |
2127 | ||
fd29cf72 SH |
2128 | |
2129 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2130 | { | |
ef87979c | 2131 | ktime_t start_time, end_time; |
417bc4b8 | 2132 | s64 remaining; |
2bc481cf SH |
2133 | struct hrtimer_sleeper t; |
2134 | ||
2135 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2136 | hrtimer_set_expires(&t.timer, spin_until); | |
2137 | ||
43d28b65 | 2138 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2139 | if (remaining <= 0) { |
2140 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2141 | return; |
417bc4b8 | 2142 | } |
2bc481cf | 2143 | |
ef87979c | 2144 | start_time = ktime_now(); |
33136d12 ED |
2145 | if (remaining < 100000) { |
2146 | /* for small delays (<100us), just loop until limit is reached */ | |
2147 | do { | |
2148 | end_time = ktime_now(); | |
2149 | } while (ktime_lt(end_time, spin_until)); | |
2150 | } else { | |
2bc481cf SH |
2151 | /* see do_nanosleep */ |
2152 | hrtimer_init_sleeper(&t, current); | |
2153 | do { | |
2154 | set_current_state(TASK_INTERRUPTIBLE); | |
2155 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2156 | if (!hrtimer_active(&t.timer)) | |
2157 | t.task = NULL; | |
2158 | ||
2159 | if (likely(t.task)) | |
1da177e4 | 2160 | schedule(); |
1da177e4 | 2161 | |
2bc481cf SH |
2162 | hrtimer_cancel(&t.timer); |
2163 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2164 | __set_current_state(TASK_RUNNING); | |
33136d12 | 2165 | end_time = ktime_now(); |
1da177e4 | 2166 | } |
ef87979c SH |
2167 | |
2168 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2169 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2170 | } |
2171 | ||
16dab72f JHS |
2172 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2173 | { | |
a553e4a6 | 2174 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2175 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2176 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2177 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2178 | } | |
2179 | ||
648fda74 | 2180 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2181 | { |
648fda74 | 2182 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2183 | } |
2184 | ||
2185 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2186 | { | |
2187 | int flow = pkt_dev->curfl; | |
2188 | ||
2189 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2190 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2191 | /* reset time */ | |
2192 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2193 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2194 | pkt_dev->curfl += 1; |
2195 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2196 | pkt_dev->curfl = 0; /*reset */ | |
2197 | } | |
2198 | } else { | |
2199 | flow = random32() % pkt_dev->cflows; | |
1211a645 | 2200 | pkt_dev->curfl = flow; |
007a531b | 2201 | |
1211a645 | 2202 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2203 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2204 | pkt_dev->flows[flow].flags = 0; |
2205 | } | |
007a531b JHS |
2206 | } |
2207 | ||
2208 | return pkt_dev->curfl; | |
2209 | } | |
2210 | ||
a553e4a6 JHS |
2211 | |
2212 | #ifdef CONFIG_XFRM | |
2213 | /* If there was already an IPSEC SA, we keep it as is, else | |
2214 | * we go look for it ... | |
2215 | */ | |
bd55775c | 2216 | #define DUMMY_MARK 0 |
fea1ab0f | 2217 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2218 | { |
2219 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2220 | if (!x) { | |
2221 | /*slow path: we dont already have xfrm_state*/ | |
bd55775c | 2222 | x = xfrm_stateonly_find(&init_net, DUMMY_MARK, |
5447c5e4 | 2223 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2224 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2225 | AF_INET, | |
2226 | pkt_dev->ipsmode, | |
2227 | pkt_dev->ipsproto, 0); | |
2228 | if (x) { | |
2229 | pkt_dev->flows[flow].x = x; | |
2230 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2231 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2232 | } |
2233 | ||
2234 | } | |
2235 | } | |
2236 | #endif | |
fd2ea0a7 DM |
2237 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2238 | { | |
e6fce5b9 RO |
2239 | |
2240 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2241 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2242 | ||
896a7cf8 | 2243 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2244 | __u16 t; |
2245 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2246 | t = random32() % | |
2247 | (pkt_dev->queue_map_max - | |
2248 | pkt_dev->queue_map_min + 1) | |
2249 | + pkt_dev->queue_map_min; | |
2250 | } else { | |
2251 | t = pkt_dev->cur_queue_map + 1; | |
2252 | if (t > pkt_dev->queue_map_max) | |
2253 | t = pkt_dev->queue_map_min; | |
2254 | } | |
2255 | pkt_dev->cur_queue_map = t; | |
2256 | } | |
bfdbc0ac | 2257 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2258 | } |
2259 | ||
1da177e4 LT |
2260 | /* Increment/randomize headers according to flags and current values |
2261 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2262 | */ | |
222f1806 LC |
2263 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2264 | { | |
2265 | __u32 imn; | |
2266 | __u32 imx; | |
2267 | int flow = 0; | |
1da177e4 | 2268 | |
007a531b JHS |
2269 | if (pkt_dev->cflows) |
2270 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2271 | |
2272 | /* Deal with source MAC */ | |
222f1806 LC |
2273 | if (pkt_dev->src_mac_count > 1) { |
2274 | __u32 mc; | |
2275 | __u32 tmp; | |
2276 | ||
2277 | if (pkt_dev->flags & F_MACSRC_RND) | |
5fa6fc76 | 2278 | mc = random32() % pkt_dev->src_mac_count; |
222f1806 LC |
2279 | else { |
2280 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2281 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2282 | pkt_dev->src_mac_count) |
2283 | pkt_dev->cur_src_mac_offset = 0; | |
2284 | } | |
2285 | ||
2286 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2287 | pkt_dev->hh[11] = tmp; | |
2288 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2289 | pkt_dev->hh[10] = tmp; | |
2290 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2291 | pkt_dev->hh[9] = tmp; | |
2292 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2293 | pkt_dev->hh[8] = tmp; | |
2294 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2295 | pkt_dev->hh[7] = tmp; | |
2296 | } | |
2297 | ||
2298 | /* Deal with Destination MAC */ | |
2299 | if (pkt_dev->dst_mac_count > 1) { | |
2300 | __u32 mc; | |
2301 | __u32 tmp; | |
2302 | ||
2303 | if (pkt_dev->flags & F_MACDST_RND) | |
5fa6fc76 | 2304 | mc = random32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2305 | |
2306 | else { | |
2307 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2308 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2309 | pkt_dev->dst_mac_count) { |
2310 | pkt_dev->cur_dst_mac_offset = 0; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2315 | pkt_dev->hh[5] = tmp; | |
2316 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2317 | pkt_dev->hh[4] = tmp; | |
2318 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2319 | pkt_dev->hh[3] = tmp; | |
2320 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2321 | pkt_dev->hh[2] = tmp; | |
2322 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2323 | pkt_dev->hh[1] = tmp; | |
2324 | } | |
2325 | ||
ca6549af SW |
2326 | if (pkt_dev->flags & F_MPLS_RND) { |
2327 | unsigned i; | |
e71a4783 | 2328 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2329 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2330 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
5fa6fc76 | 2331 | ((__force __be32)random32() & |
ca6549af SW |
2332 | htonl(0x000fffff)); |
2333 | } | |
2334 | ||
34954ddc | 2335 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
5fa6fc76 | 2336 | pkt_dev->vlan_id = random32() & (4096-1); |
34954ddc FF |
2337 | } |
2338 | ||
2339 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
5fa6fc76 | 2340 | pkt_dev->svlan_id = random32() & (4096 - 1); |
34954ddc FF |
2341 | } |
2342 | ||
222f1806 LC |
2343 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2344 | if (pkt_dev->flags & F_UDPSRC_RND) | |
5fa6fc76 SH |
2345 | pkt_dev->cur_udp_src = random32() % |
2346 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2347 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2348 | |
2349 | else { | |
1da177e4 LT |
2350 | pkt_dev->cur_udp_src++; |
2351 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2352 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2353 | } |
2354 | } | |
2355 | ||
2356 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2357 | if (pkt_dev->flags & F_UDPDST_RND) { | |
5fa6fc76 SH |
2358 | pkt_dev->cur_udp_dst = random32() % |
2359 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2360 | + pkt_dev->udp_dst_min; | |
222f1806 | 2361 | } else { |
1da177e4 | 2362 | pkt_dev->cur_udp_dst++; |
222f1806 | 2363 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2364 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2365 | } |
2366 | } | |
1da177e4 LT |
2367 | |
2368 | if (!(pkt_dev->flags & F_IPV6)) { | |
2369 | ||
63adc6fb SH |
2370 | imn = ntohl(pkt_dev->saddr_min); |
2371 | imx = ntohl(pkt_dev->saddr_max); | |
2372 | if (imn < imx) { | |
1da177e4 | 2373 | __u32 t; |
222f1806 | 2374 | if (pkt_dev->flags & F_IPSRC_RND) |
5fa6fc76 | 2375 | t = random32() % (imx - imn) + imn; |
1da177e4 LT |
2376 | else { |
2377 | t = ntohl(pkt_dev->cur_saddr); | |
2378 | t++; | |
63adc6fb | 2379 | if (t > imx) |
1da177e4 | 2380 | t = imn; |
63adc6fb | 2381 | |
1da177e4 LT |
2382 | } |
2383 | pkt_dev->cur_saddr = htonl(t); | |
2384 | } | |
222f1806 | 2385 | |
007a531b | 2386 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2387 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2388 | } else { | |
252e3346 AV |
2389 | imn = ntohl(pkt_dev->daddr_min); |
2390 | imx = ntohl(pkt_dev->daddr_max); | |
2391 | if (imn < imx) { | |
1da177e4 | 2392 | __u32 t; |
252e3346 | 2393 | __be32 s; |
1da177e4 LT |
2394 | if (pkt_dev->flags & F_IPDST_RND) { |
2395 | ||
5fa6fc76 | 2396 | t = random32() % (imx - imn) + imn; |
252e3346 | 2397 | s = htonl(t); |
1da177e4 | 2398 | |
21cf2253 JP |
2399 | while (ipv4_is_loopback(s) || |
2400 | ipv4_is_multicast(s) || | |
1e637c74 | 2401 | ipv4_is_lbcast(s) || |
21cf2253 JP |
2402 | ipv4_is_zeronet(s) || |
2403 | ipv4_is_local_multicast(s)) { | |
5fa6fc76 | 2404 | t = random32() % (imx - imn) + imn; |
252e3346 | 2405 | s = htonl(t); |
1da177e4 | 2406 | } |
252e3346 AV |
2407 | pkt_dev->cur_daddr = s; |
2408 | } else { | |
1da177e4 LT |
2409 | t = ntohl(pkt_dev->cur_daddr); |
2410 | t++; | |
2411 | if (t > imx) { | |
2412 | t = imn; | |
2413 | } | |
2414 | pkt_dev->cur_daddr = htonl(t); | |
2415 | } | |
2416 | } | |
222f1806 | 2417 | if (pkt_dev->cflows) { |
007a531b | 2418 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2419 | pkt_dev->flows[flow].cur_daddr = |
2420 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2421 | #ifdef CONFIG_XFRM |
2422 | if (pkt_dev->flags & F_IPSEC_ON) | |
2423 | get_ipsec_sa(pkt_dev, flow); | |
2424 | #endif | |
1da177e4 LT |
2425 | pkt_dev->nflows++; |
2426 | } | |
2427 | } | |
222f1806 LC |
2428 | } else { /* IPV6 * */ |
2429 | ||
2430 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2431 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2432 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2433 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
1da177e4 LT |
2434 | else { |
2435 | int i; | |
2436 | ||
2437 | /* Only random destinations yet */ | |
2438 | ||
222f1806 | 2439 | for (i = 0; i < 4; i++) { |
1da177e4 | 2440 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
5fa6fc76 | 2441 | (((__force __be32)random32() | |
222f1806 LC |
2442 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2443 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2444 | } |
222f1806 | 2445 | } |
1da177e4 LT |
2446 | } |
2447 | ||
222f1806 LC |
2448 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2449 | __u32 t; | |
2450 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
5fa6fc76 SH |
2451 | t = random32() % |
2452 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2453 | + pkt_dev->min_pkt_size; | |
222f1806 | 2454 | } else { |
1da177e4 | 2455 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2456 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2457 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2458 | } |
2459 | pkt_dev->cur_pkt_size = t; | |
2460 | } | |
1da177e4 | 2461 | |
fd2ea0a7 | 2462 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2463 | |
1da177e4 LT |
2464 | pkt_dev->flows[flow].count++; |
2465 | } | |
2466 | ||
a553e4a6 JHS |
2467 | |
2468 | #ifdef CONFIG_XFRM | |
2469 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2470 | { | |
2471 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2472 | int err = 0; | |
a553e4a6 JHS |
2473 | |
2474 | if (!x) | |
2475 | return 0; | |
2476 | /* XXX: we dont support tunnel mode for now until | |
2477 | * we resolve the dst issue */ | |
2478 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2479 | return 0; | |
2480 | ||
2481 | spin_lock(&x->lock); | |
a553e4a6 | 2482 | |
13996378 | 2483 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2484 | if (err) |
2485 | goto error; | |
2486 | err = x->type->output(x, skb); | |
2487 | if (err) | |
2488 | goto error; | |
2489 | ||
63adc6fb | 2490 | x->curlft.bytes += skb->len; |
a553e4a6 | 2491 | x->curlft.packets++; |
a553e4a6 JHS |
2492 | error: |
2493 | spin_unlock(&x->lock); | |
2494 | return err; | |
2495 | } | |
2496 | ||
475ac1e4 | 2497 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2498 | { |
2499 | if (pkt_dev->cflows) { | |
2500 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2501 | int i; |
2502 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2503 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2504 | if (x) { | |
2505 | xfrm_state_put(x); | |
2506 | pkt_dev->flows[i].x = NULL; | |
2507 | } | |
2508 | } | |
2509 | } | |
2510 | } | |
2511 | ||
475ac1e4 | 2512 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2513 | struct sk_buff *skb, __be16 protocol) |
2514 | { | |
2515 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2516 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2517 | int nhead = 0; | |
2518 | if (x) { | |
2519 | int ret; | |
2520 | __u8 *eth; | |
2521 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2522 | if (nhead > 0) { |
a553e4a6 JHS |
2523 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2524 | if (ret < 0) { | |
f9467eae JP |
2525 | pr_err("Error expanding ipsec packet %d\n", |
2526 | ret); | |
b4bb4ac8 | 2527 | goto err; |
a553e4a6 JHS |
2528 | } |
2529 | } | |
2530 | ||
2531 | /* ipsec is not expecting ll header */ | |
2532 | skb_pull(skb, ETH_HLEN); | |
2533 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2534 | if (ret) { | |
f9467eae | 2535 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2536 | goto err; |
a553e4a6 JHS |
2537 | } |
2538 | /* restore ll */ | |
2539 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2540 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2541 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2542 | } |
2543 | } | |
2544 | return 1; | |
b4bb4ac8 IJ |
2545 | err: |
2546 | kfree_skb(skb); | |
2547 | return 0; | |
a553e4a6 JHS |
2548 | } |
2549 | #endif | |
2550 | ||
ca6549af SW |
2551 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2552 | { | |
2553 | unsigned i; | |
63adc6fb | 2554 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2555 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2556 | |
ca6549af SW |
2557 | mpls--; |
2558 | *mpls |= MPLS_STACK_BOTTOM; | |
2559 | } | |
2560 | ||
0f37c605 AV |
2561 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2562 | unsigned int prio) | |
2563 | { | |
2564 | return htons(id | (cfi << 12) | (prio << 13)); | |
2565 | } | |
2566 | ||
26ad7879 ED |
2567 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2568 | int datalen) | |
2569 | { | |
2570 | struct timeval timestamp; | |
2571 | struct pktgen_hdr *pgh; | |
2572 | ||
2573 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2574 | datalen -= sizeof(*pgh); | |
2575 | ||
2576 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2577 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2578 | } else { |
2579 | int frags = pkt_dev->nfrags; | |
2580 | int i, len; | |
7d36a991 | 2581 | int frag_len; |
26ad7879 ED |
2582 | |
2583 | ||
2584 | if (frags > MAX_SKB_FRAGS) | |
2585 | frags = MAX_SKB_FRAGS; | |
2586 | len = datalen - frags * PAGE_SIZE; | |
2587 | if (len > 0) { | |
2588 | memset(skb_put(skb, len), 0, len); | |
2589 | datalen = frags * PAGE_SIZE; | |
2590 | } | |
2591 | ||
2592 | i = 0; | |
7d36a991 | 2593 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2594 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2595 | while (datalen > 0) { |
2596 | if (unlikely(!pkt_dev->page)) { | |
2597 | int node = numa_node_id(); | |
2598 | ||
2599 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2600 | node = pkt_dev->node; | |
2601 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2602 | if (!pkt_dev->page) | |
2603 | break; | |
2604 | } | |
a0bec1cd | 2605 | get_page(pkt_dev->page); |
ea2ab693 | 2606 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2607 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2608 | /*last fragment, fill rest of data*/ |
2609 | if (i == (frags - 1)) | |
9e903e08 ED |
2610 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2611 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2612 | else |
9e903e08 ED |
2613 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2614 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2615 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2616 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2617 | i++; |
2618 | skb_shinfo(skb)->nr_frags = i; | |
2619 | } | |
26ad7879 ED |
2620 | } |
2621 | ||
2622 | /* Stamp the time, and sequence number, | |
2623 | * convert them to network byte order | |
2624 | */ | |
2625 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2626 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2627 | ||
2628 | do_gettimeofday(×tamp); | |
2629 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2630 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2631 | } | |
2632 | ||
222f1806 LC |
2633 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2634 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2635 | { |
2636 | struct sk_buff *skb = NULL; | |
2637 | __u8 *eth; | |
2638 | struct udphdr *udph; | |
2639 | int datalen, iplen; | |
2640 | struct iphdr *iph; | |
d5f1ce9a | 2641 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2642 | __be32 *mpls; |
34954ddc FF |
2643 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2644 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2645 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2646 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2647 | u16 queue_map; |
ca6549af SW |
2648 | |
2649 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2650 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2651 | |
34954ddc | 2652 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2653 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2654 | |
64053bee RO |
2655 | /* Update any of the values, used when we're incrementing various |
2656 | * fields. | |
2657 | */ | |
2658 | mod_cur_headers(pkt_dev); | |
eb589063 | 2659 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2660 | |
7ac5459e | 2661 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2662 | |
2663 | if (pkt_dev->flags & F_NODE) { | |
2664 | int node; | |
2665 | ||
2666 | if (pkt_dev->node >= 0) | |
2667 | node = pkt_dev->node; | |
2668 | else | |
2669 | node = numa_node_id(); | |
2670 | ||
2671 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2672 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2673 | if (likely(skb)) { | |
2674 | skb_reserve(skb, NET_SKB_PAD); | |
2675 | skb->dev = odev; | |
2676 | } | |
2677 | } | |
2678 | else | |
2679 | skb = __netdev_alloc_skb(odev, | |
2680 | pkt_dev->cur_pkt_size + 64 | |
2681 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2682 | ||
1da177e4 LT |
2683 | if (!skb) { |
2684 | sprintf(pkt_dev->result, "No memory"); | |
2685 | return NULL; | |
2686 | } | |
a8d764b9 | 2687 | prefetchw(skb->data); |
1da177e4 | 2688 | |
7ac5459e | 2689 | skb_reserve(skb, datalen); |
1da177e4 LT |
2690 | |
2691 | /* Reserve for ethernet and IP header */ | |
2692 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2693 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2694 | if (pkt_dev->nr_labels) | |
2695 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2696 | |
2697 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2698 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2699 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2700 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2701 | pkt_dev->svlan_cfi, | |
2702 | pkt_dev->svlan_p); | |
34954ddc | 2703 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2704 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2705 | } |
2706 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2707 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2708 | pkt_dev->vlan_cfi, | |
2709 | pkt_dev->vlan_p); | |
34954ddc | 2710 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2711 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2712 | } |
2713 | ||
27a884dc | 2714 | skb->network_header = skb->tail; |
b0e380b1 | 2715 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2716 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2717 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2718 | skb->priority = pkt_dev->skb_priority; |
2719 | ||
ddc7b8e3 ACM |
2720 | iph = ip_hdr(skb); |
2721 | udph = udp_hdr(skb); | |
1da177e4 | 2722 | |
1da177e4 | 2723 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2724 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2725 | |
ca6549af SW |
2726 | /* Eth + IPh + UDPh + mpls */ |
2727 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2728 | pkt_dev->pkt_overhead; |
222f1806 | 2729 | if (datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2730 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2731 | |
1da177e4 LT |
2732 | udph->source = htons(pkt_dev->cur_udp_src); |
2733 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2734 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2735 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2736 | |
2737 | iph->ihl = 5; | |
2738 | iph->version = 4; | |
2739 | iph->ttl = 32; | |
1ca7768c | 2740 | iph->tos = pkt_dev->tos; |
222f1806 | 2741 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2742 | iph->saddr = pkt_dev->cur_saddr; |
2743 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2744 | iph->id = htons(pkt_dev->ip_id); |
2745 | pkt_dev->ip_id++; | |
1da177e4 LT |
2746 | iph->frag_off = 0; |
2747 | iplen = 20 + 8 + datalen; | |
2748 | iph->tot_len = htons(iplen); | |
2749 | iph->check = 0; | |
222f1806 | 2750 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2751 | skb->protocol = protocol; |
b0e380b1 | 2752 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2753 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2754 | skb->dev = odev; |
2755 | skb->pkt_type = PACKET_HOST; | |
26ad7879 | 2756 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
1da177e4 | 2757 | |
a553e4a6 JHS |
2758 | #ifdef CONFIG_XFRM |
2759 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2760 | return NULL; | |
2761 | #endif | |
2762 | ||
1da177e4 LT |
2763 | return skb; |
2764 | } | |
2765 | ||
2766 | /* | |
4ec93edb | 2767 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
1da177e4 LT |
2768 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
2769 | * | |
4ec93edb | 2770 | * Slightly modified for kernel. |
1da177e4 LT |
2771 | * Should be candidate for net/ipv4/utils.c |
2772 | * --ro | |
2773 | */ | |
2774 | ||
222f1806 | 2775 | static unsigned int scan_ip6(const char *s, char ip[16]) |
1da177e4 LT |
2776 | { |
2777 | unsigned int i; | |
222f1806 | 2778 | unsigned int len = 0; |
1da177e4 LT |
2779 | unsigned long u; |
2780 | char suffix[16]; | |
222f1806 LC |
2781 | unsigned int prefixlen = 0; |
2782 | unsigned int suffixlen = 0; | |
252e3346 | 2783 | __be32 tmp; |
cfcabdcc | 2784 | char *pos; |
1da177e4 | 2785 | |
222f1806 LC |
2786 | for (i = 0; i < 16; i++) |
2787 | ip[i] = 0; | |
1da177e4 LT |
2788 | |
2789 | for (;;) { | |
2790 | if (*s == ':') { | |
2791 | len++; | |
222f1806 LC |
2792 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
2793 | s += 2; | |
1da177e4 LT |
2794 | len++; |
2795 | break; | |
2796 | } | |
2797 | s++; | |
2798 | } | |
1da177e4 | 2799 | |
cfcabdcc SH |
2800 | u = simple_strtoul(s, &pos, 16); |
2801 | i = pos - s; | |
222f1806 LC |
2802 | if (!i) |
2803 | return 0; | |
2804 | if (prefixlen == 12 && s[i] == '.') { | |
1da177e4 LT |
2805 | |
2806 | /* the last 4 bytes may be written as IPv4 address */ | |
2807 | ||
2808 | tmp = in_aton(s); | |
222f1806 LC |
2809 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); |
2810 | return i + len; | |
1da177e4 LT |
2811 | } |
2812 | ip[prefixlen++] = (u >> 8); | |
2813 | ip[prefixlen++] = (u & 255); | |
222f1806 LC |
2814 | s += i; |
2815 | len += i; | |
2816 | if (prefixlen == 16) | |
1da177e4 LT |
2817 | return len; |
2818 | } | |
2819 | ||
2820 | /* part 2, after "::" */ | |
2821 | for (;;) { | |
2822 | if (*s == ':') { | |
222f1806 | 2823 | if (suffixlen == 0) |
1da177e4 LT |
2824 | break; |
2825 | s++; | |
2826 | len++; | |
222f1806 | 2827 | } else if (suffixlen != 0) |
1da177e4 | 2828 | break; |
cfcabdcc SH |
2829 | |
2830 | u = simple_strtol(s, &pos, 16); | |
2831 | i = pos - s; | |
1da177e4 | 2832 | if (!i) { |
222f1806 LC |
2833 | if (*s) |
2834 | len--; | |
1da177e4 LT |
2835 | break; |
2836 | } | |
222f1806 | 2837 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { |
1da177e4 | 2838 | tmp = in_aton(s); |
222f1806 LC |
2839 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, |
2840 | sizeof(tmp)); | |
2841 | suffixlen += 4; | |
2842 | len += strlen(s); | |
1da177e4 LT |
2843 | break; |
2844 | } | |
2845 | suffix[suffixlen++] = (u >> 8); | |
2846 | suffix[suffixlen++] = (u & 255); | |
222f1806 LC |
2847 | s += i; |
2848 | len += i; | |
2849 | if (prefixlen + suffixlen == 16) | |
1da177e4 LT |
2850 | break; |
2851 | } | |
222f1806 LC |
2852 | for (i = 0; i < suffixlen; i++) |
2853 | ip[16 - suffixlen + i] = suffix[i]; | |
1da177e4 LT |
2854 | return len; |
2855 | } | |
2856 | ||
222f1806 LC |
2857 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2858 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2859 | { |
2860 | struct sk_buff *skb = NULL; | |
2861 | __u8 *eth; | |
2862 | struct udphdr *udph; | |
2863 | int datalen; | |
2864 | struct ipv6hdr *iph; | |
d5f1ce9a | 2865 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2866 | __be32 *mpls; |
34954ddc FF |
2867 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2868 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2869 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2870 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2871 | u16 queue_map; |
ca6549af SW |
2872 | |
2873 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2874 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2875 | |
34954ddc | 2876 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2877 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2878 | |
64053bee RO |
2879 | /* Update any of the values, used when we're incrementing various |
2880 | * fields. | |
2881 | */ | |
2882 | mod_cur_headers(pkt_dev); | |
eb589063 | 2883 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2884 | |
e470757d SH |
2885 | skb = __netdev_alloc_skb(odev, |
2886 | pkt_dev->cur_pkt_size + 64 | |
2887 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
2888 | if (!skb) { |
2889 | sprintf(pkt_dev->result, "No memory"); | |
2890 | return NULL; | |
2891 | } | |
a8d764b9 | 2892 | prefetchw(skb->data); |
1da177e4 LT |
2893 | |
2894 | skb_reserve(skb, 16); | |
2895 | ||
2896 | /* Reserve for ethernet and IP header */ | |
2897 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2898 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2899 | if (pkt_dev->nr_labels) | |
2900 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2901 | |
2902 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2903 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2904 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2905 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2906 | pkt_dev->svlan_cfi, | |
2907 | pkt_dev->svlan_p); | |
34954ddc | 2908 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2909 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2910 | } |
2911 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2912 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2913 | pkt_dev->vlan_cfi, | |
2914 | pkt_dev->vlan_p); | |
34954ddc | 2915 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2916 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2917 | } |
2918 | ||
27a884dc | 2919 | skb->network_header = skb->tail; |
b0e380b1 | 2920 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 2921 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2922 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2923 | skb->priority = pkt_dev->skb_priority; |
ddc7b8e3 ACM |
2924 | iph = ipv6_hdr(skb); |
2925 | udph = udp_hdr(skb); | |
1da177e4 | 2926 | |
1da177e4 | 2927 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2928 | *(__be16 *) ð[12] = protocol; |
64053bee | 2929 | |
ca6549af SW |
2930 | /* Eth + IPh + UDPh + mpls */ |
2931 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2932 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2933 | pkt_dev->pkt_overhead; |
1da177e4 | 2934 | |
222f1806 | 2935 | if (datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 LT |
2936 | datalen = sizeof(struct pktgen_hdr); |
2937 | if (net_ratelimit()) | |
f9467eae | 2938 | pr_info("increased datalen to %d\n", datalen); |
1da177e4 LT |
2939 | } |
2940 | ||
2941 | udph->source = htons(pkt_dev->cur_udp_src); | |
2942 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2943 | udph->len = htons(datalen + sizeof(struct udphdr)); |
2944 | udph->check = 0; /* No checksum */ | |
1da177e4 | 2945 | |
d5f1ce9a | 2946 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2947 | |
1ca7768c FF |
2948 | if (pkt_dev->traffic_class) { |
2949 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2950 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2951 | } |
2952 | ||
1da177e4 LT |
2953 | iph->hop_limit = 32; |
2954 | ||
2955 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
2956 | iph->nexthdr = IPPROTO_UDP; | |
2957 | ||
4e3fd7a0 AD |
2958 | iph->daddr = pkt_dev->cur_in6_daddr; |
2959 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 2960 | |
b0e380b1 | 2961 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2962 | pkt_dev->pkt_overhead); |
ca6549af | 2963 | skb->protocol = protocol; |
1da177e4 LT |
2964 | skb->dev = odev; |
2965 | skb->pkt_type = PACKET_HOST; | |
2966 | ||
26ad7879 | 2967 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
222f1806 | 2968 | |
1da177e4 LT |
2969 | return skb; |
2970 | } | |
2971 | ||
475ac1e4 SH |
2972 | static struct sk_buff *fill_packet(struct net_device *odev, |
2973 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 2974 | { |
222f1806 | 2975 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
2976 | return fill_packet_ipv6(odev, pkt_dev); |
2977 | else | |
2978 | return fill_packet_ipv4(odev, pkt_dev); | |
2979 | } | |
2980 | ||
222f1806 | 2981 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 2982 | { |
222f1806 LC |
2983 | pkt_dev->seq_num = 1; |
2984 | pkt_dev->idle_acc = 0; | |
1da177e4 | 2985 | pkt_dev->sofar = 0; |
222f1806 LC |
2986 | pkt_dev->tx_bytes = 0; |
2987 | pkt_dev->errors = 0; | |
1da177e4 LT |
2988 | } |
2989 | ||
2990 | /* Set up structure for sending pkts, clear counters */ | |
2991 | ||
2992 | static void pktgen_run(struct pktgen_thread *t) | |
2993 | { | |
c26a8016 | 2994 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
2995 | int started = 0; |
2996 | ||
f9467eae | 2997 | func_enter(); |
1da177e4 LT |
2998 | |
2999 | if_lock(t); | |
c26a8016 | 3000 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
3001 | |
3002 | /* | |
3003 | * setup odev and create initial packet. | |
3004 | */ | |
3005 | pktgen_setup_inject(pkt_dev); | |
3006 | ||
222f1806 | 3007 | if (pkt_dev->odev) { |
1da177e4 | 3008 | pktgen_clear_counters(pkt_dev); |
222f1806 | 3009 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3010 | pkt_dev->skb = NULL; |
fd29cf72 SH |
3011 | pkt_dev->started_at = |
3012 | pkt_dev->next_tx = ktime_now(); | |
3013 | ||
16dab72f | 3014 | set_pkt_overhead(pkt_dev); |
222f1806 | 3015 | |
1da177e4 LT |
3016 | strcpy(pkt_dev->result, "Starting"); |
3017 | started++; | |
222f1806 | 3018 | } else |
1da177e4 LT |
3019 | strcpy(pkt_dev->result, "Error starting"); |
3020 | } | |
3021 | if_unlock(t); | |
222f1806 LC |
3022 | if (started) |
3023 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3024 | } |
3025 | ||
3026 | static void pktgen_stop_all_threads_ifs(void) | |
3027 | { | |
cdcdbe0b | 3028 | struct pktgen_thread *t; |
1da177e4 | 3029 | |
f9467eae | 3030 | func_enter(); |
1da177e4 | 3031 | |
6146e6a4 | 3032 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3033 | |
3034 | list_for_each_entry(t, &pktgen_threads, th_list) | |
95ed63f7 | 3035 | t->control |= T_STOP; |
cdcdbe0b | 3036 | |
6146e6a4 | 3037 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3038 | } |
3039 | ||
648fda74 | 3040 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3041 | { |
648fda74 | 3042 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3043 | |
c26a8016 | 3044 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
3045 | if (pkt_dev->running) |
3046 | return 1; | |
3047 | return 0; | |
1da177e4 LT |
3048 | } |
3049 | ||
222f1806 | 3050 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3051 | { |
222f1806 | 3052 | if_lock(t); |
1da177e4 | 3053 | |
222f1806 | 3054 | while (thread_is_running(t)) { |
1da177e4 | 3055 | |
222f1806 | 3056 | if_unlock(t); |
1da177e4 | 3057 | |
222f1806 | 3058 | msleep_interruptible(100); |
1da177e4 | 3059 | |
222f1806 LC |
3060 | if (signal_pending(current)) |
3061 | goto signal; | |
3062 | if_lock(t); | |
3063 | } | |
3064 | if_unlock(t); | |
3065 | return 1; | |
3066 | signal: | |
3067 | return 0; | |
1da177e4 LT |
3068 | } |
3069 | ||
3070 | static int pktgen_wait_all_threads_run(void) | |
3071 | { | |
cdcdbe0b | 3072 | struct pktgen_thread *t; |
1da177e4 | 3073 | int sig = 1; |
222f1806 | 3074 | |
6146e6a4 | 3075 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3076 | |
3077 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1da177e4 | 3078 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3079 | if (sig == 0) |
3080 | break; | |
1da177e4 | 3081 | } |
cdcdbe0b LC |
3082 | |
3083 | if (sig == 0) | |
3084 | list_for_each_entry(t, &pktgen_threads, th_list) | |
1da177e4 | 3085 | t->control |= (T_STOP); |
cdcdbe0b | 3086 | |
6146e6a4 | 3087 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3088 | return sig; |
3089 | } | |
3090 | ||
3091 | static void pktgen_run_all_threads(void) | |
3092 | { | |
cdcdbe0b | 3093 | struct pktgen_thread *t; |
1da177e4 | 3094 | |
f9467eae | 3095 | func_enter(); |
1da177e4 | 3096 | |
6146e6a4 | 3097 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3098 | |
cdcdbe0b | 3099 | list_for_each_entry(t, &pktgen_threads, th_list) |
1da177e4 | 3100 | t->control |= (T_RUN); |
cdcdbe0b | 3101 | |
6146e6a4 | 3102 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3103 | |
63adc6fb SH |
3104 | /* Propagate thread->control */ |
3105 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3106 | |
1da177e4 LT |
3107 | pktgen_wait_all_threads_run(); |
3108 | } | |
3109 | ||
eb37b41c JB |
3110 | static void pktgen_reset_all_threads(void) |
3111 | { | |
3112 | struct pktgen_thread *t; | |
3113 | ||
f9467eae | 3114 | func_enter(); |
eb37b41c JB |
3115 | |
3116 | mutex_lock(&pktgen_thread_lock); | |
3117 | ||
3118 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3119 | t->control |= (T_REMDEVALL); | |
3120 | ||
3121 | mutex_unlock(&pktgen_thread_lock); | |
3122 | ||
63adc6fb SH |
3123 | /* Propagate thread->control */ |
3124 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c JB |
3125 | |
3126 | pktgen_wait_all_threads_run(); | |
3127 | } | |
3128 | ||
1da177e4 LT |
3129 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3130 | { | |
fd29cf72 | 3131 | __u64 bps, mbps, pps; |
222f1806 | 3132 | char *p = pkt_dev->result; |
fd29cf72 SH |
3133 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3134 | pkt_dev->started_at); | |
3135 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3136 | ||
03a14ab1 | 3137 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3138 | (unsigned long long)ktime_to_us(elapsed), |
3139 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3140 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3141 | (unsigned long long)pkt_dev->sofar, |
3142 | pkt_dev->cur_pkt_size, nr_frags); | |
3143 | ||
fd29cf72 SH |
3144 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3145 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3146 | |
3147 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3148 | ||
3149 | mbps = bps; | |
3150 | do_div(mbps, 1000000); | |
3151 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3152 | (unsigned long long)pps, | |
3153 | (unsigned long long)mbps, | |
3154 | (unsigned long long)bps, | |
3155 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3156 | } |
1da177e4 LT |
3157 | |
3158 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3159 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3160 | { |
222f1806 | 3161 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3162 | |
222f1806 | 3163 | if (!pkt_dev->running) { |
f9467eae JP |
3164 | pr_warning("interface: %s is already stopped\n", |
3165 | pkt_dev->odevname); | |
222f1806 LC |
3166 | return -EINVAL; |
3167 | } | |
1da177e4 | 3168 | |
3bda06a3 SH |
3169 | kfree_skb(pkt_dev->skb); |
3170 | pkt_dev->skb = NULL; | |
fd29cf72 | 3171 | pkt_dev->stopped_at = ktime_now(); |
222f1806 | 3172 | pkt_dev->running = 0; |
1da177e4 | 3173 | |
95ed63f7 | 3174 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3175 | |
222f1806 | 3176 | return 0; |
1da177e4 LT |
3177 | } |
3178 | ||
222f1806 | 3179 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3180 | { |
c26a8016 | 3181 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3182 | |
1da177e4 LT |
3183 | if_lock(t); |
3184 | ||
c26a8016 LC |
3185 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3186 | if (!pkt_dev->running) | |
222f1806 LC |
3187 | continue; |
3188 | if (best == NULL) | |
c26a8016 | 3189 | best = pkt_dev; |
fd29cf72 | 3190 | else if (ktime_lt(pkt_dev->next_tx, best->next_tx)) |
c26a8016 | 3191 | best = pkt_dev; |
1da177e4 LT |
3192 | } |
3193 | if_unlock(t); | |
222f1806 | 3194 | return best; |
1da177e4 LT |
3195 | } |
3196 | ||
222f1806 LC |
3197 | static void pktgen_stop(struct pktgen_thread *t) |
3198 | { | |
c26a8016 | 3199 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3200 | |
f9467eae | 3201 | func_enter(); |
1da177e4 | 3202 | |
222f1806 | 3203 | if_lock(t); |
1da177e4 | 3204 | |
c26a8016 LC |
3205 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3206 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3207 | } |
1da177e4 | 3208 | |
222f1806 | 3209 | if_unlock(t); |
1da177e4 LT |
3210 | } |
3211 | ||
95ed63f7 AK |
3212 | /* |
3213 | * one of our devices needs to be removed - find it | |
3214 | * and remove it | |
3215 | */ | |
3216 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3217 | { | |
c26a8016 LC |
3218 | struct list_head *q, *n; |
3219 | struct pktgen_dev *cur; | |
95ed63f7 | 3220 | |
f9467eae | 3221 | func_enter(); |
95ed63f7 AK |
3222 | |
3223 | if_lock(t); | |
3224 | ||
c26a8016 LC |
3225 | list_for_each_safe(q, n, &t->if_list) { |
3226 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3227 | |
222f1806 LC |
3228 | if (!cur->removal_mark) |
3229 | continue; | |
95ed63f7 | 3230 | |
86dc1ad2 | 3231 | kfree_skb(cur->skb); |
95ed63f7 AK |
3232 | cur->skb = NULL; |
3233 | ||
3234 | pktgen_remove_device(t, cur); | |
3235 | ||
3236 | break; | |
3237 | } | |
3238 | ||
3239 | if_unlock(t); | |
3240 | } | |
3241 | ||
222f1806 | 3242 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3243 | { |
c26a8016 LC |
3244 | struct list_head *q, *n; |
3245 | struct pktgen_dev *cur; | |
222f1806 | 3246 | |
f9467eae JP |
3247 | func_enter(); |
3248 | ||
222f1806 | 3249 | /* Remove all devices, free mem */ |
95ed63f7 | 3250 | |
222f1806 | 3251 | if_lock(t); |
1da177e4 | 3252 | |
c26a8016 LC |
3253 | list_for_each_safe(q, n, &t->if_list) { |
3254 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3255 | |
86dc1ad2 | 3256 | kfree_skb(cur->skb); |
95ed63f7 AK |
3257 | cur->skb = NULL; |
3258 | ||
1da177e4 LT |
3259 | pktgen_remove_device(t, cur); |
3260 | } | |
3261 | ||
222f1806 | 3262 | if_unlock(t); |
1da177e4 LT |
3263 | } |
3264 | ||
222f1806 | 3265 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3266 | { |
222f1806 | 3267 | /* Remove from the thread list */ |
1da177e4 | 3268 | |
ee74baa7 | 3269 | remove_proc_entry(t->tsk->comm, pg_proc_dir); |
1da177e4 | 3270 | |
1da177e4 LT |
3271 | } |
3272 | ||
ef87979c | 3273 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3274 | { |
fd29cf72 | 3275 | ktime_t idle_start = ktime_now(); |
ef87979c SH |
3276 | schedule(); |
3277 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); | |
3278 | } | |
3791decb | 3279 | |
ef87979c SH |
3280 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3281 | { | |
3282 | ktime_t idle_start = ktime_now(); | |
3791decb | 3283 | |
ef87979c SH |
3284 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3285 | if (signal_pending(current)) | |
3286 | break; | |
3287 | ||
3288 | if (need_resched()) | |
3289 | pktgen_resched(pkt_dev); | |
3290 | else | |
3291 | cpu_relax(); | |
3292 | } | |
fd29cf72 | 3293 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); |
3791decb SH |
3294 | } |
3295 | ||
475ac1e4 | 3296 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3297 | { |
00829823 | 3298 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3299 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3300 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3301 | struct netdev_queue *txq; |
fd2ea0a7 | 3302 | u16 queue_map; |
1da177e4 LT |
3303 | int ret; |
3304 | ||
ef87979c SH |
3305 | /* If device is offline, then don't send */ |
3306 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3307 | pktgen_stop_device(pkt_dev); | |
3308 | return; | |
fd2ea0a7 DM |
3309 | } |
3310 | ||
ef87979c SH |
3311 | /* This is max DELAY, this has special meaning of |
3312 | * "never transmit" | |
3313 | */ | |
3314 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
3315 | pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX); | |
3791decb | 3316 | return; |
1da177e4 | 3317 | } |
222f1806 | 3318 | |
ef87979c | 3319 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3320 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3321 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3322 | /* build a new pkt */ | |
3323 | kfree_skb(pkt_dev->skb); | |
3324 | ||
3325 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3326 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3327 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3328 | schedule(); |
3329 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3330 | return; | |
1da177e4 | 3331 | } |
baac8564 | 3332 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3333 | pkt_dev->allocated_skbs++; |
3334 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3335 | } |
95ed63f7 | 3336 | |
ef87979c SH |
3337 | if (pkt_dev->delay && pkt_dev->last_ok) |
3338 | spin(pkt_dev, pkt_dev->next_tx); | |
3339 | ||
fd2ea0a7 DM |
3340 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3341 | txq = netdev_get_tx_queue(odev, queue_map); | |
3342 | ||
3343 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3344 | |
73466498 | 3345 | if (unlikely(netif_xmit_frozen_or_stopped(txq))) { |
ef87979c | 3346 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3347 | pkt_dev->last_ok = 0; |
3348 | goto unlock; | |
3349 | } | |
3350 | atomic_inc(&(pkt_dev->skb->users)); | |
3351 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3352 | |
3353 | switch (ret) { | |
3354 | case NETDEV_TX_OK: | |
3355 | txq_trans_update(txq); | |
3356 | pkt_dev->last_ok = 1; | |
3357 | pkt_dev->sofar++; | |
3358 | pkt_dev->seq_num++; | |
baac8564 | 3359 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3360 | break; |
f466dba1 JF |
3361 | case NET_XMIT_DROP: |
3362 | case NET_XMIT_CN: | |
3363 | case NET_XMIT_POLICED: | |
3364 | /* skb has been consumed */ | |
3365 | pkt_dev->errors++; | |
3366 | break; | |
ef87979c SH |
3367 | default: /* Drivers are not supposed to return other values! */ |
3368 | if (net_ratelimit()) | |
58231186 | 3369 | pr_info("%s xmit error: %d\n", pkt_dev->odevname, ret); |
ef87979c SH |
3370 | pkt_dev->errors++; |
3371 | /* fallthru */ | |
3372 | case NETDEV_TX_LOCKED: | |
3373 | case NETDEV_TX_BUSY: | |
3374 | /* Retry it next time */ | |
3375 | atomic_dec(&(pkt_dev->skb->users)); | |
3376 | pkt_dev->last_ok = 0; | |
222f1806 | 3377 | } |
0835acfe | 3378 | unlock: |
fd2ea0a7 | 3379 | __netif_tx_unlock_bh(txq); |
222f1806 | 3380 | |
1da177e4 LT |
3381 | /* If pkt_dev->count is zero, then run forever */ |
3382 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3383 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3384 | |
1da177e4 LT |
3385 | /* Done with this */ |
3386 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3387 | } |
222f1806 | 3388 | } |
1da177e4 | 3389 | |
4ec93edb | 3390 | /* |
1da177e4 LT |
3391 | * Main loop of the thread goes here |
3392 | */ | |
3393 | ||
ee74baa7 | 3394 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3395 | { |
3396 | DEFINE_WAIT(wait); | |
ee74baa7 | 3397 | struct pktgen_thread *t = arg; |
222f1806 | 3398 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3399 | int cpu = t->cpu; |
1da177e4 | 3400 | |
ee74baa7 | 3401 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3402 | |
3403 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3404 | complete(&t->start_done); |
1da177e4 | 3405 | |
f9467eae | 3406 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3407 | |
ee74baa7 | 3408 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3409 | |
83144186 RW |
3410 | set_freezable(); |
3411 | ||
ee74baa7 DM |
3412 | while (!kthread_should_stop()) { |
3413 | pkt_dev = next_to_run(t); | |
1da177e4 | 3414 | |
ef87979c | 3415 | if (unlikely(!pkt_dev && t->control == 0)) { |
551eaff1 ED |
3416 | if (pktgen_exiting) |
3417 | break; | |
ef87979c SH |
3418 | wait_event_interruptible_timeout(t->queue, |
3419 | t->control != 0, | |
3420 | HZ/10); | |
1b3f720b | 3421 | try_to_freeze(); |
ef87979c | 3422 | continue; |
ee74baa7 | 3423 | } |
1da177e4 | 3424 | |
ee74baa7 | 3425 | __set_current_state(TASK_RUNNING); |
222f1806 | 3426 | |
ef87979c | 3427 | if (likely(pkt_dev)) { |
1da177e4 LT |
3428 | pktgen_xmit(pkt_dev); |
3429 | ||
ef87979c SH |
3430 | if (need_resched()) |
3431 | pktgen_resched(pkt_dev); | |
3432 | else | |
3433 | cpu_relax(); | |
3434 | } | |
3435 | ||
222f1806 | 3436 | if (t->control & T_STOP) { |
1da177e4 LT |
3437 | pktgen_stop(t); |
3438 | t->control &= ~(T_STOP); | |
3439 | } | |
3440 | ||
222f1806 | 3441 | if (t->control & T_RUN) { |
1da177e4 LT |
3442 | pktgen_run(t); |
3443 | t->control &= ~(T_RUN); | |
3444 | } | |
3445 | ||
222f1806 | 3446 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3447 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3448 | t->control &= ~(T_REMDEVALL); |
3449 | } | |
3450 | ||
222f1806 | 3451 | if (t->control & T_REMDEV) { |
95ed63f7 | 3452 | pktgen_rem_one_if(t); |
1da177e4 LT |
3453 | t->control &= ~(T_REMDEV); |
3454 | } | |
3455 | ||
09fe3ef4 AM |
3456 | try_to_freeze(); |
3457 | ||
ee74baa7 | 3458 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3459 | } |
1da177e4 | 3460 | |
f9467eae | 3461 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3462 | pktgen_stop(t); |
1da177e4 | 3463 | |
f9467eae | 3464 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3465 | pktgen_rem_all_ifs(t); |
1da177e4 | 3466 | |
f9467eae | 3467 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3468 | pktgen_rem_thread(t); |
cdcdbe0b | 3469 | |
551eaff1 ED |
3470 | /* Wait for kthread_stop */ |
3471 | while (!kthread_should_stop()) { | |
3472 | set_current_state(TASK_INTERRUPTIBLE); | |
3473 | schedule(); | |
3474 | } | |
3475 | __set_current_state(TASK_RUNNING); | |
3476 | ||
ee74baa7 | 3477 | return 0; |
1da177e4 LT |
3478 | } |
3479 | ||
222f1806 | 3480 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3481 | const char *ifname, bool exact) |
1da177e4 | 3482 | { |
c26a8016 | 3483 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3484 | size_t len = strlen(ifname); |
222f1806 | 3485 | |
3e984840 | 3486 | if_lock(t); |
c26a8016 | 3487 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3488 | if (strncmp(p->odevname, ifname, len) == 0) { |
3489 | if (p->odevname[len]) { | |
3490 | if (exact || p->odevname[len] != '@') | |
3491 | continue; | |
3492 | } | |
c26a8016 | 3493 | pkt_dev = p; |
222f1806 LC |
3494 | break; |
3495 | } | |
222f1806 LC |
3496 | |
3497 | if_unlock(t); | |
f9467eae | 3498 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3499 | return pkt_dev; |
1da177e4 LT |
3500 | } |
3501 | ||
4ec93edb YH |
3502 | /* |
3503 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3504 | */ |
3505 | ||
222f1806 LC |
3506 | static int add_dev_to_thread(struct pktgen_thread *t, |
3507 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3508 | { |
3509 | int rv = 0; | |
222f1806 LC |
3510 | |
3511 | if_lock(t); | |
3512 | ||
3513 | if (pkt_dev->pg_thread) { | |
f9467eae | 3514 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3515 | rv = -EBUSY; |
3516 | goto out; | |
3517 | } | |
c26a8016 LC |
3518 | |
3519 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3520 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3521 | pkt_dev->running = 0; |
3522 | ||
222f1806 LC |
3523 | out: |
3524 | if_unlock(t); | |
3525 | return rv; | |
1da177e4 LT |
3526 | } |
3527 | ||
3528 | /* Called under thread lock */ | |
3529 | ||
222f1806 | 3530 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3531 | { |
222f1806 | 3532 | struct pktgen_dev *pkt_dev; |
39df232f | 3533 | int err; |
3291b9db | 3534 | int node = cpu_to_node(t->cpu); |
222f1806 | 3535 | |
1da177e4 LT |
3536 | /* We don't allow a device to be on several threads */ |
3537 | ||
d50a6b56 SH |
3538 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
3539 | if (pkt_dev) { | |
f9467eae | 3540 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3541 | return -EBUSY; |
3542 | } | |
d50a6b56 | 3543 | |
3291b9db | 3544 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3545 | if (!pkt_dev) |
3546 | return -ENOMEM; | |
3547 | ||
593f63b0 | 3548 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3549 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3550 | node); |
d50a6b56 SH |
3551 | if (pkt_dev->flows == NULL) { |
3552 | kfree(pkt_dev); | |
3553 | return -ENOMEM; | |
3554 | } | |
d50a6b56 | 3555 | |
95ed63f7 | 3556 | pkt_dev->removal_mark = 0; |
d50a6b56 SH |
3557 | pkt_dev->min_pkt_size = ETH_ZLEN; |
3558 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3559 | pkt_dev->nfrags = 0; | |
fd29cf72 | 3560 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3561 | pkt_dev->count = pg_count_d; |
3562 | pkt_dev->sofar = 0; | |
222f1806 | 3563 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3564 | pkt_dev->udp_src_max = 9; |
3565 | pkt_dev->udp_dst_min = 9; | |
3566 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3567 | pkt_dev->vlan_p = 0; |
3568 | pkt_dev->vlan_cfi = 0; | |
3569 | pkt_dev->vlan_id = 0xffff; | |
3570 | pkt_dev->svlan_p = 0; | |
3571 | pkt_dev->svlan_cfi = 0; | |
3572 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3573 | pkt_dev->node = -1; |
34954ddc | 3574 | |
39df232f SH |
3575 | err = pktgen_setup_dev(pkt_dev, ifname); |
3576 | if (err) | |
3577 | goto out1; | |
d8873315 NH |
3578 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3579 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3580 | |
5efdccbc DL |
3581 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, |
3582 | &pktgen_if_fops, pkt_dev); | |
39df232f | 3583 | if (!pkt_dev->entry) { |
f9467eae | 3584 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3585 | PG_PROC_DIR, ifname); |
39df232f SH |
3586 | err = -EINVAL; |
3587 | goto out2; | |
d50a6b56 | 3588 | } |
a553e4a6 JHS |
3589 | #ifdef CONFIG_XFRM |
3590 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3591 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3592 | #endif | |
d50a6b56 SH |
3593 | |
3594 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3595 | out2: |
3596 | dev_put(pkt_dev->odev); | |
3597 | out1: | |
a553e4a6 JHS |
3598 | #ifdef CONFIG_XFRM |
3599 | free_SAs(pkt_dev); | |
3600 | #endif | |
1d0ebfe7 | 3601 | vfree(pkt_dev->flows); |
39df232f SH |
3602 | kfree(pkt_dev); |
3603 | return err; | |
1da177e4 LT |
3604 | } |
3605 | ||
ee74baa7 | 3606 | static int __init pktgen_create_thread(int cpu) |
1da177e4 | 3607 | { |
cdcdbe0b | 3608 | struct pktgen_thread *t; |
d50a6b56 | 3609 | struct proc_dir_entry *pe; |
ee74baa7 | 3610 | struct task_struct *p; |
222f1806 | 3611 | |
3291b9db ED |
3612 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3613 | cpu_to_node(cpu)); | |
222f1806 | 3614 | if (!t) { |
f9467eae | 3615 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3616 | return -ENOMEM; |
3617 | } | |
3618 | ||
222f1806 | 3619 | spin_lock_init(&t->if_lock); |
1da177e4 | 3620 | t->cpu = cpu; |
222f1806 | 3621 | |
ee74baa7 DM |
3622 | INIT_LIST_HEAD(&t->if_list); |
3623 | ||
3624 | list_add_tail(&t->th_list, &pktgen_threads); | |
d3ede327 | 3625 | init_completion(&t->start_done); |
ee74baa7 | 3626 | |
94dcf29a ED |
3627 | p = kthread_create_on_node(pktgen_thread_worker, |
3628 | t, | |
3629 | cpu_to_node(cpu), | |
3630 | "kpktgend_%d", cpu); | |
ee74baa7 | 3631 | if (IS_ERR(p)) { |
f9467eae | 3632 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3633 | list_del(&t->th_list); |
3634 | kfree(t); | |
3635 | return PTR_ERR(p); | |
3636 | } | |
3637 | kthread_bind(p, cpu); | |
3638 | t->tsk = p; | |
3639 | ||
5efdccbc DL |
3640 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, |
3641 | &pktgen_thread_fops, t); | |
222f1806 | 3642 | if (!pe) { |
f9467eae | 3643 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3644 | PG_PROC_DIR, t->tsk->comm); |
3645 | kthread_stop(p); | |
3646 | list_del(&t->th_list); | |
222f1806 LC |
3647 | kfree(t); |
3648 | return -EINVAL; | |
3649 | } | |
d50a6b56 | 3650 | |
ee74baa7 | 3651 | wake_up_process(p); |
d3ede327 | 3652 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3653 | |
3654 | return 0; | |
3655 | } | |
3656 | ||
4ec93edb YH |
3657 | /* |
3658 | * Removes a device from the thread if_list. | |
1da177e4 | 3659 | */ |
222f1806 LC |
3660 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3661 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3662 | { |
c26a8016 LC |
3663 | struct list_head *q, *n; |
3664 | struct pktgen_dev *p; | |
1da177e4 | 3665 | |
c26a8016 LC |
3666 | list_for_each_safe(q, n, &t->if_list) { |
3667 | p = list_entry(q, struct pktgen_dev, list); | |
3668 | if (p == pkt_dev) | |
3669 | list_del(&p->list); | |
1da177e4 LT |
3670 | } |
3671 | } | |
3672 | ||
222f1806 LC |
3673 | static int pktgen_remove_device(struct pktgen_thread *t, |
3674 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3675 | { |
3676 | ||
f9467eae | 3677 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3678 | |
222f1806 | 3679 | if (pkt_dev->running) { |
f9467eae | 3680 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3681 | pktgen_stop_device(pkt_dev); |
3682 | } | |
3683 | ||
3684 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3685 | |
3686 | if (pkt_dev->odev) { | |
3687 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3688 | pkt_dev->odev = NULL; |
3689 | } | |
3690 | ||
1da177e4 LT |
3691 | /* And update the thread if_list */ |
3692 | ||
3693 | _rem_dev_from_if_list(t, pkt_dev); | |
3694 | ||
39df232f SH |
3695 | if (pkt_dev->entry) |
3696 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1da177e4 | 3697 | |
a553e4a6 JHS |
3698 | #ifdef CONFIG_XFRM |
3699 | free_SAs(pkt_dev); | |
3700 | #endif | |
1d0ebfe7 | 3701 | vfree(pkt_dev->flows); |
26ad7879 ED |
3702 | if (pkt_dev->page) |
3703 | put_page(pkt_dev->page); | |
1da177e4 | 3704 | kfree(pkt_dev); |
222f1806 | 3705 | return 0; |
1da177e4 LT |
3706 | } |
3707 | ||
222f1806 | 3708 | static int __init pg_init(void) |
1da177e4 LT |
3709 | { |
3710 | int cpu; | |
d50a6b56 | 3711 | struct proc_dir_entry *pe; |
ce14f894 | 3712 | int ret = 0; |
1da177e4 | 3713 | |
f9467eae | 3714 | pr_info("%s", version); |
1da177e4 | 3715 | |
457c4cbc | 3716 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); |
d50a6b56 SH |
3717 | if (!pg_proc_dir) |
3718 | return -ENODEV; | |
1da177e4 | 3719 | |
25296d59 | 3720 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); |
222f1806 | 3721 | if (pe == NULL) { |
f9467eae | 3722 | pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL); |
ce14f894 WC |
3723 | ret = -EINVAL; |
3724 | goto remove_dir; | |
222f1806 | 3725 | } |
1da177e4 | 3726 | |
1da177e4 | 3727 | register_netdevice_notifier(&pktgen_notifier_block); |
222f1806 | 3728 | |
670c02c2 | 3729 | for_each_online_cpu(cpu) { |
8024bb24 | 3730 | int err; |
1da177e4 | 3731 | |
ee74baa7 | 3732 | err = pktgen_create_thread(cpu); |
8024bb24 | 3733 | if (err) |
f9467eae JP |
3734 | pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n", |
3735 | cpu, err); | |
222f1806 | 3736 | } |
8024bb24 LC |
3737 | |
3738 | if (list_empty(&pktgen_threads)) { | |
f9467eae | 3739 | pr_err("ERROR: Initialization failed for all threads\n"); |
ce14f894 WC |
3740 | ret = -ENODEV; |
3741 | goto unregister; | |
8024bb24 LC |
3742 | } |
3743 | ||
222f1806 | 3744 | return 0; |
ce14f894 WC |
3745 | |
3746 | unregister: | |
3747 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3748 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
3749 | remove_dir: | |
3750 | proc_net_remove(&init_net, PG_PROC_DIR); | |
3751 | return ret; | |
1da177e4 LT |
3752 | } |
3753 | ||
3754 | static void __exit pg_cleanup(void) | |
3755 | { | |
cdcdbe0b LC |
3756 | struct pktgen_thread *t; |
3757 | struct list_head *q, *n; | |
1da177e4 | 3758 | |
222f1806 | 3759 | /* Stop all interfaces & threads */ |
551eaff1 | 3760 | pktgen_exiting = true; |
1da177e4 | 3761 | |
cdcdbe0b LC |
3762 | list_for_each_safe(q, n, &pktgen_threads) { |
3763 | t = list_entry(q, struct pktgen_thread, th_list); | |
ee74baa7 DM |
3764 | kthread_stop(t->tsk); |
3765 | kfree(t); | |
222f1806 | 3766 | } |
1da177e4 | 3767 | |
222f1806 | 3768 | /* Un-register us from receiving netdevice events */ |
1da177e4 LT |
3769 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3770 | ||
222f1806 | 3771 | /* Clean up proc file system */ |
d50a6b56 | 3772 | remove_proc_entry(PGCTRL, pg_proc_dir); |
457c4cbc | 3773 | proc_net_remove(&init_net, PG_PROC_DIR); |
1da177e4 LT |
3774 | } |
3775 | ||
1da177e4 LT |
3776 | module_init(pg_init); |
3777 | module_exit(pg_cleanup); | |
3778 | ||
c3d2f52d | 3779 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3780 | MODULE_DESCRIPTION("Packet Generator tool"); |
3781 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3782 | MODULE_VERSION(VERSION); |
1da177e4 | 3783 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3784 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3785 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3786 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3787 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3788 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3789 | module_param(debug, int, 0); |
c3d2f52d | 3790 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |