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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> |
457c4cbc | 159 | #include <net/net_namespace.h> |
1da177e4 LT |
160 | #include <net/checksum.h> |
161 | #include <net/ipv6.h> | |
162 | #include <net/addrconf.h> | |
a553e4a6 JHS |
163 | #ifdef CONFIG_XFRM |
164 | #include <net/xfrm.h> | |
165 | #endif | |
1da177e4 LT |
166 | #include <asm/byteorder.h> |
167 | #include <linux/rcupdate.h> | |
1977f032 | 168 | #include <linux/bitops.h> |
63adc6fb SH |
169 | #include <linux/io.h> |
170 | #include <linux/timex.h> | |
171 | #include <linux/uaccess.h> | |
1da177e4 | 172 | #include <asm/dma.h> |
222f1806 | 173 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 174 | |
43d28b65 | 175 | #define VERSION "2.74" |
1da177e4 | 176 | #define IP_NAME_SZ 32 |
ca6549af | 177 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 178 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 179 | |
f9467eae JP |
180 | #define func_enter() pr_debug("entering %s\n", __func__); |
181 | ||
1da177e4 | 182 | /* Device flag bits */ |
222f1806 LC |
183 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
184 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
185 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
186 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
187 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
188 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
189 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
190 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 191 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
192 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
193 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 194 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 195 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 196 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 197 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 198 | #define F_NODE (1<<15) /* Node memory alloc*/ |
1da177e4 LT |
199 | |
200 | /* Thread control flag bits */ | |
6b80d6a6 SH |
201 | #define T_STOP (1<<0) /* Stop run */ |
202 | #define T_RUN (1<<1) /* Start run */ | |
203 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
204 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 205 | |
1da177e4 LT |
206 | /* If lock -- can be removed after some work */ |
207 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
208 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
209 | ||
210 | /* Used to help with determining the pkts on receive */ | |
211 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
212 | #define PG_PROC_DIR "pktgen" |
213 | #define PGCTRL "pgctrl" | |
63adc6fb | 214 | static struct proc_dir_entry *pg_proc_dir; |
1da177e4 LT |
215 | |
216 | #define MAX_CFLOWS 65536 | |
217 | ||
34954ddc FF |
218 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
219 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
220 | ||
222f1806 | 221 | struct flow_state { |
252e3346 | 222 | __be32 cur_daddr; |
222f1806 | 223 | int count; |
a553e4a6 JHS |
224 | #ifdef CONFIG_XFRM |
225 | struct xfrm_state *x; | |
226 | #endif | |
007a531b | 227 | __u32 flags; |
1da177e4 LT |
228 | }; |
229 | ||
007a531b JHS |
230 | /* flow flag bits */ |
231 | #define F_INIT (1<<0) /* flow has been initialized */ | |
232 | ||
1da177e4 | 233 | struct pktgen_dev { |
1da177e4 LT |
234 | /* |
235 | * Try to keep frequent/infrequent used vars. separated. | |
236 | */ | |
39df232f SH |
237 | struct proc_dir_entry *entry; /* proc file */ |
238 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 239 | struct list_head list; /* chaining in the thread's run-queue */ |
1da177e4 | 240 | |
63adc6fb | 241 | int running; /* if false, the test will stop */ |
1da177e4 | 242 | |
222f1806 LC |
243 | /* If min != max, then we will either do a linear iteration, or |
244 | * we will do a random selection from within the range. | |
245 | */ | |
246 | __u32 flags; | |
95ed63f7 AK |
247 | int removal_mark; /* non-zero => the device is marked for |
248 | * removal by worker thread */ | |
1da177e4 | 249 | |
222f1806 LC |
250 | int min_pkt_size; /* = ETH_ZLEN; */ |
251 | int max_pkt_size; /* = ETH_ZLEN; */ | |
16dab72f | 252 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 253 | int nfrags; |
26ad7879 | 254 | struct page *page; |
fd29cf72 SH |
255 | u64 delay; /* nano-seconds */ |
256 | ||
222f1806 LC |
257 | __u64 count; /* Default No packets to send */ |
258 | __u64 sofar; /* How many pkts we've sent so far */ | |
259 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 260 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
261 | |
262 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
263 | |
264 | __u64 allocated_skbs; | |
265 | __u32 clone_count; | |
266 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
267 | * Or a failed transmit of some sort? |
268 | * This will keep sequence numbers in order | |
222f1806 | 269 | */ |
fd29cf72 SH |
270 | ktime_t next_tx; |
271 | ktime_t started_at; | |
272 | ktime_t stopped_at; | |
273 | u64 idle_acc; /* nano-seconds */ | |
274 | ||
222f1806 LC |
275 | __u32 seq_num; |
276 | ||
63adc6fb SH |
277 | int clone_skb; /* |
278 | * Use multiple SKBs during packet gen. | |
279 | * If this number is greater than 1, then | |
280 | * that many copies of the same packet will be | |
281 | * sent before a new packet is allocated. | |
282 | * If you want to send 1024 identical packets | |
283 | * before creating a new packet, | |
284 | * set clone_skb to 1024. | |
222f1806 LC |
285 | */ |
286 | ||
287 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
288 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
289 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
290 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
291 | ||
292 | struct in6_addr in6_saddr; | |
293 | struct in6_addr in6_daddr; | |
294 | struct in6_addr cur_in6_daddr; | |
295 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 296 | /* For ranges */ |
222f1806 LC |
297 | struct in6_addr min_in6_daddr; |
298 | struct in6_addr max_in6_daddr; | |
299 | struct in6_addr min_in6_saddr; | |
300 | struct in6_addr max_in6_saddr; | |
301 | ||
302 | /* If we're doing ranges, random or incremental, then this | |
303 | * defines the min/max for those ranges. | |
304 | */ | |
252e3346 AV |
305 | __be32 saddr_min; /* inclusive, source IP address */ |
306 | __be32 saddr_max; /* exclusive, source IP address */ | |
307 | __be32 daddr_min; /* inclusive, dest IP address */ | |
308 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
309 | |
310 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
311 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
312 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
313 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
314 | ||
1ca7768c | 315 | /* DSCP + ECN */ |
63adc6fb SH |
316 | __u8 tos; /* six MSB of (former) IPv4 TOS |
317 | are for dscp codepoint */ | |
318 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
319 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 320 | |
ca6549af SW |
321 | /* MPLS */ |
322 | unsigned nr_labels; /* Depth of stack, 0 = no MPLS */ | |
323 | __be32 labels[MAX_MPLS_LABELS]; | |
324 | ||
34954ddc FF |
325 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
326 | __u8 vlan_p; | |
327 | __u8 vlan_cfi; | |
328 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
329 | ||
330 | __u8 svlan_p; | |
331 | __u8 svlan_cfi; | |
332 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
333 | ||
222f1806 LC |
334 | __u32 src_mac_count; /* How many MACs to iterate through */ |
335 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
336 | ||
337 | unsigned char dst_mac[ETH_ALEN]; | |
338 | unsigned char src_mac[ETH_ALEN]; | |
339 | ||
340 | __u32 cur_dst_mac_offset; | |
341 | __u32 cur_src_mac_offset; | |
252e3346 AV |
342 | __be32 cur_saddr; |
343 | __be32 cur_daddr; | |
66ed1e5e | 344 | __u16 ip_id; |
222f1806 LC |
345 | __u16 cur_udp_dst; |
346 | __u16 cur_udp_src; | |
45b270f8 | 347 | __u16 cur_queue_map; |
222f1806 | 348 | __u32 cur_pkt_size; |
baac8564 | 349 | __u32 last_pkt_size; |
222f1806 LC |
350 | |
351 | __u8 hh[14]; | |
352 | /* = { | |
353 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
354 | ||
355 | We fill in SRC address later | |
356 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
357 | 0x08, 0x00 | |
358 | }; | |
359 | */ | |
360 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
361 | ||
63adc6fb | 362 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
363 | * are transmitting the same one multiple times |
364 | */ | |
63adc6fb SH |
365 | struct net_device *odev; /* The out-going device. |
366 | * Note that the device should have it's | |
367 | * pg_info pointer pointing back to this | |
368 | * device. | |
369 | * Set when the user specifies the out-going | |
370 | * device name (not when the inject is | |
371 | * started as it used to do.) | |
372 | */ | |
593f63b0 | 373 | char odevname[32]; |
1da177e4 | 374 | struct flow_state *flows; |
222f1806 LC |
375 | unsigned cflows; /* Concurrent flows (config) */ |
376 | unsigned lflow; /* Flow length (config) */ | |
377 | unsigned nflows; /* accumulated flows (stats) */ | |
007a531b | 378 | unsigned curfl; /* current sequenced flow (state)*/ |
45b270f8 RO |
379 | |
380 | u16 queue_map_min; | |
381 | u16 queue_map_max; | |
9e50e3ac | 382 | __u32 skb_priority; /* skb priority field */ |
e99b99b4 | 383 | int node; /* Memory node */ |
45b270f8 | 384 | |
a553e4a6 JHS |
385 | #ifdef CONFIG_XFRM |
386 | __u8 ipsmode; /* IPSEC mode (config) */ | |
387 | __u8 ipsproto; /* IPSEC type (config) */ | |
388 | #endif | |
39df232f | 389 | char result[512]; |
1da177e4 LT |
390 | }; |
391 | ||
392 | struct pktgen_hdr { | |
252e3346 AV |
393 | __be32 pgh_magic; |
394 | __be32 seq_num; | |
395 | __be32 tv_sec; | |
396 | __be32 tv_usec; | |
1da177e4 LT |
397 | }; |
398 | ||
551eaff1 ED |
399 | static bool pktgen_exiting __read_mostly; |
400 | ||
1da177e4 | 401 | struct pktgen_thread { |
63adc6fb | 402 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 403 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 404 | struct list_head th_list; |
ee74baa7 | 405 | struct task_struct *tsk; |
222f1806 | 406 | char result[512]; |
222f1806 | 407 | |
63adc6fb SH |
408 | /* Field for thread to receive "posted" events terminate, |
409 | stop ifs etc. */ | |
222f1806 LC |
410 | |
411 | u32 control; | |
1da177e4 LT |
412 | int cpu; |
413 | ||
222f1806 | 414 | wait_queue_head_t queue; |
d3ede327 | 415 | struct completion start_done; |
1da177e4 LT |
416 | }; |
417 | ||
418 | #define REMOVE 1 | |
419 | #define FIND 0 | |
420 | ||
fd29cf72 | 421 | static inline ktime_t ktime_now(void) |
1da177e4 | 422 | { |
fd29cf72 SH |
423 | struct timespec ts; |
424 | ktime_get_ts(&ts); | |
425 | ||
426 | return timespec_to_ktime(ts); | |
1da177e4 LT |
427 | } |
428 | ||
fd29cf72 SH |
429 | /* This works even if 32 bit because of careful byte order choice */ |
430 | static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2) | |
1da177e4 | 431 | { |
fd29cf72 | 432 | return cmp1.tv64 < cmp2.tv64; |
1da177e4 LT |
433 | } |
434 | ||
c3d2f52d | 435 | static const char version[] = |
f9467eae JP |
436 | "Packet Generator for packet performance testing. " |
437 | "Version: " VERSION "\n"; | |
1da177e4 | 438 | |
222f1806 LC |
439 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
440 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
441 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 442 | const char *ifname, bool exact); |
1da177e4 LT |
443 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
444 | static void pktgen_run_all_threads(void); | |
eb37b41c | 445 | static void pktgen_reset_all_threads(void); |
1da177e4 | 446 | static void pktgen_stop_all_threads_ifs(void); |
3bda06a3 | 447 | |
222f1806 | 448 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 449 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 450 | |
222f1806 | 451 | static unsigned int scan_ip6(const char *s, char ip[16]); |
1da177e4 LT |
452 | |
453 | /* Module parameters, defaults. */ | |
65c5b786 SH |
454 | static int pg_count_d __read_mostly = 1000; |
455 | static int pg_delay_d __read_mostly; | |
456 | static int pg_clone_skb_d __read_mostly; | |
457 | static int debug __read_mostly; | |
1da177e4 | 458 | |
222fa076 | 459 | static DEFINE_MUTEX(pktgen_thread_lock); |
cdcdbe0b | 460 | static LIST_HEAD(pktgen_threads); |
1da177e4 | 461 | |
1da177e4 LT |
462 | static struct notifier_block pktgen_notifier_block = { |
463 | .notifier_call = pktgen_device_event, | |
464 | }; | |
465 | ||
1da177e4 | 466 | /* |
4ec93edb | 467 | * /proc handling functions |
1da177e4 LT |
468 | * |
469 | */ | |
470 | ||
d50a6b56 | 471 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 472 | { |
c3d2f52d | 473 | seq_puts(seq, version); |
d50a6b56 | 474 | return 0; |
1da177e4 LT |
475 | } |
476 | ||
63adc6fb SH |
477 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
478 | size_t count, loff_t *ppos) | |
1da177e4 | 479 | { |
1da177e4 | 480 | int err = 0; |
d50a6b56 | 481 | char data[128]; |
1da177e4 | 482 | |
222f1806 LC |
483 | if (!capable(CAP_NET_ADMIN)) { |
484 | err = -EPERM; | |
1da177e4 | 485 | goto out; |
222f1806 | 486 | } |
1da177e4 | 487 | |
d50a6b56 SH |
488 | if (count > sizeof(data)) |
489 | count = sizeof(data); | |
1da177e4 | 490 | |
1da177e4 | 491 | if (copy_from_user(data, buf, count)) { |
b4099fab | 492 | err = -EFAULT; |
d50a6b56 | 493 | goto out; |
222f1806 LC |
494 | } |
495 | data[count - 1] = 0; /* Make string */ | |
1da177e4 | 496 | |
222f1806 | 497 | if (!strcmp(data, "stop")) |
1da177e4 LT |
498 | pktgen_stop_all_threads_ifs(); |
499 | ||
222f1806 | 500 | else if (!strcmp(data, "start")) |
1da177e4 LT |
501 | pktgen_run_all_threads(); |
502 | ||
eb37b41c JB |
503 | else if (!strcmp(data, "reset")) |
504 | pktgen_reset_all_threads(); | |
505 | ||
222f1806 | 506 | else |
f9467eae | 507 | pr_warning("Unknown command: %s\n", data); |
1da177e4 LT |
508 | |
509 | err = count; | |
510 | ||
222f1806 LC |
511 | out: |
512 | return err; | |
1da177e4 LT |
513 | } |
514 | ||
d50a6b56 SH |
515 | static int pgctrl_open(struct inode *inode, struct file *file) |
516 | { | |
517 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
518 | } | |
519 | ||
9a32144e | 520 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
521 | .owner = THIS_MODULE, |
522 | .open = pgctrl_open, | |
523 | .read = seq_read, | |
524 | .llseek = seq_lseek, | |
525 | .write = pgctrl_write, | |
526 | .release = single_release, | |
d50a6b56 SH |
527 | }; |
528 | ||
529 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 530 | { |
648fda74 | 531 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
532 | ktime_t stopped; |
533 | u64 idle; | |
222f1806 LC |
534 | |
535 | seq_printf(seq, | |
536 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
537 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
538 | pkt_dev->max_pkt_size); | |
539 | ||
540 | seq_printf(seq, | |
fd29cf72 SH |
541 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
542 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 543 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
544 | |
545 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
546 | pkt_dev->lflow); | |
547 | ||
45b270f8 RO |
548 | seq_printf(seq, |
549 | " queue_map_min: %u queue_map_max: %u\n", | |
550 | pkt_dev->queue_map_min, | |
551 | pkt_dev->queue_map_max); | |
552 | ||
9e50e3ac JF |
553 | if (pkt_dev->skb_priority) |
554 | seq_printf(seq, " skb_priority: %u\n", | |
555 | pkt_dev->skb_priority); | |
556 | ||
222f1806 | 557 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 558 | seq_printf(seq, |
47a0200d AD |
559 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
560 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
561 | &pkt_dev->in6_saddr, | |
562 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
563 | &pkt_dev->in6_daddr, | |
564 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
565 | } else { |
566 | seq_printf(seq, | |
567 | " dst_min: %s dst_max: %s\n", | |
568 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 569 | seq_printf(seq, |
63adc6fb SH |
570 | " src_min: %s src_max: %s\n", |
571 | pkt_dev->src_min, pkt_dev->src_max); | |
572 | } | |
1da177e4 | 573 | |
222f1806 | 574 | seq_puts(seq, " src_mac: "); |
1da177e4 | 575 | |
e174961c JB |
576 | seq_printf(seq, "%pM ", |
577 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
578 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 LC |
579 | |
580 | seq_printf(seq, "dst_mac: "); | |
e174961c | 581 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
582 | |
583 | seq_printf(seq, | |
63adc6fb SH |
584 | " udp_src_min: %d udp_src_max: %d" |
585 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
586 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
587 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
588 | ||
589 | seq_printf(seq, | |
ca6549af | 590 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 591 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 592 | |
ca6549af SW |
593 | if (pkt_dev->nr_labels) { |
594 | unsigned i; | |
595 | seq_printf(seq, " mpls: "); | |
e71a4783 | 596 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
597 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
598 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
599 | } | |
600 | ||
63adc6fb | 601 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 602 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
603 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
604 | pkt_dev->vlan_cfi); | |
34954ddc | 605 | |
63adc6fb | 606 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 607 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
608 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
609 | pkt_dev->svlan_cfi); | |
34954ddc | 610 | |
63adc6fb | 611 | if (pkt_dev->tos) |
1ca7768c | 612 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 613 | |
63adc6fb | 614 | if (pkt_dev->traffic_class) |
1ca7768c | 615 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 616 | |
e99b99b4 RO |
617 | if (pkt_dev->node >= 0) |
618 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
619 | ||
ca6549af SW |
620 | seq_printf(seq, " Flags: "); |
621 | ||
222f1806 LC |
622 | if (pkt_dev->flags & F_IPV6) |
623 | seq_printf(seq, "IPV6 "); | |
1da177e4 | 624 | |
222f1806 LC |
625 | if (pkt_dev->flags & F_IPSRC_RND) |
626 | seq_printf(seq, "IPSRC_RND "); | |
1da177e4 | 627 | |
222f1806 LC |
628 | if (pkt_dev->flags & F_IPDST_RND) |
629 | seq_printf(seq, "IPDST_RND "); | |
1da177e4 | 630 | |
222f1806 LC |
631 | if (pkt_dev->flags & F_TXSIZE_RND) |
632 | seq_printf(seq, "TXSIZE_RND "); | |
1da177e4 | 633 | |
222f1806 LC |
634 | if (pkt_dev->flags & F_UDPSRC_RND) |
635 | seq_printf(seq, "UDPSRC_RND "); | |
1da177e4 | 636 | |
222f1806 LC |
637 | if (pkt_dev->flags & F_UDPDST_RND) |
638 | seq_printf(seq, "UDPDST_RND "); | |
1da177e4 | 639 | |
ca6549af SW |
640 | if (pkt_dev->flags & F_MPLS_RND) |
641 | seq_printf(seq, "MPLS_RND "); | |
642 | ||
45b270f8 RO |
643 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
644 | seq_printf(seq, "QUEUE_MAP_RND "); | |
645 | ||
e6fce5b9 RO |
646 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
647 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
648 | ||
007a531b JHS |
649 | if (pkt_dev->cflows) { |
650 | if (pkt_dev->flags & F_FLOW_SEQ) | |
651 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
652 | else | |
653 | seq_printf(seq, "FLOW_RND "); | |
654 | } | |
655 | ||
a553e4a6 JHS |
656 | #ifdef CONFIG_XFRM |
657 | if (pkt_dev->flags & F_IPSEC_ON) | |
658 | seq_printf(seq, "IPSEC "); | |
659 | #endif | |
660 | ||
222f1806 LC |
661 | if (pkt_dev->flags & F_MACSRC_RND) |
662 | seq_printf(seq, "MACSRC_RND "); | |
1da177e4 | 663 | |
222f1806 LC |
664 | if (pkt_dev->flags & F_MACDST_RND) |
665 | seq_printf(seq, "MACDST_RND "); | |
1da177e4 | 666 | |
34954ddc FF |
667 | if (pkt_dev->flags & F_VID_RND) |
668 | seq_printf(seq, "VID_RND "); | |
669 | ||
670 | if (pkt_dev->flags & F_SVID_RND) | |
671 | seq_printf(seq, "SVID_RND "); | |
672 | ||
e99b99b4 RO |
673 | if (pkt_dev->flags & F_NODE) |
674 | seq_printf(seq, "NODE_ALLOC "); | |
675 | ||
222f1806 LC |
676 | seq_puts(seq, "\n"); |
677 | ||
fd29cf72 SH |
678 | /* not really stopped, more like last-running-at */ |
679 | stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at; | |
680 | idle = pkt_dev->idle_acc; | |
681 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 682 | |
222f1806 | 683 | seq_printf(seq, |
fd29cf72 | 684 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 685 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
686 | (unsigned long long)pkt_dev->errors); |
687 | ||
688 | seq_printf(seq, | |
689 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
690 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
691 | (unsigned long long) ktime_to_us(stopped), | |
692 | (unsigned long long) idle); | |
1da177e4 | 693 | |
222f1806 LC |
694 | seq_printf(seq, |
695 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
696 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
697 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 698 | |
222f1806 | 699 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
700 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
701 | &pkt_dev->cur_in6_saddr, | |
702 | &pkt_dev->cur_in6_daddr); | |
222f1806 LC |
703 | } else |
704 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", | |
d50a6b56 | 705 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
1da177e4 | 706 | |
222f1806 | 707 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 708 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 709 | |
45b270f8 RO |
710 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
711 | ||
222f1806 | 712 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
713 | |
714 | if (pkt_dev->result[0]) | |
222f1806 | 715 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 716 | else |
222f1806 | 717 | seq_printf(seq, "Result: Idle\n"); |
1da177e4 | 718 | |
d50a6b56 | 719 | return 0; |
1da177e4 LT |
720 | } |
721 | ||
ca6549af | 722 | |
63adc6fb SH |
723 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
724 | __u32 *num) | |
ca6549af SW |
725 | { |
726 | int i = 0; | |
727 | *num = 0; | |
728 | ||
e71a4783 | 729 | for (; i < maxlen; i++) { |
82fd5b5d | 730 | int value; |
ca6549af SW |
731 | char c; |
732 | *num <<= 4; | |
733 | if (get_user(c, &user_buffer[i])) | |
734 | return -EFAULT; | |
82fd5b5d AS |
735 | value = hex_to_bin(c); |
736 | if (value >= 0) | |
737 | *num |= value; | |
ca6549af SW |
738 | else |
739 | break; | |
740 | } | |
741 | return i; | |
742 | } | |
743 | ||
222f1806 LC |
744 | static int count_trail_chars(const char __user * user_buffer, |
745 | unsigned int maxlen) | |
1da177e4 LT |
746 | { |
747 | int i; | |
748 | ||
749 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
750 | char c; |
751 | if (get_user(c, &user_buffer[i])) | |
752 | return -EFAULT; | |
753 | switch (c) { | |
1da177e4 LT |
754 | case '\"': |
755 | case '\n': | |
756 | case '\r': | |
757 | case '\t': | |
758 | case ' ': | |
759 | case '=': | |
760 | break; | |
761 | default: | |
762 | goto done; | |
3ff50b79 | 763 | } |
1da177e4 LT |
764 | } |
765 | done: | |
766 | return i; | |
767 | } | |
768 | ||
222f1806 LC |
769 | static unsigned long num_arg(const char __user * user_buffer, |
770 | unsigned long maxlen, unsigned long *num) | |
1da177e4 | 771 | { |
d6182223 | 772 | int i; |
1da177e4 | 773 | *num = 0; |
222f1806 | 774 | |
d6182223 | 775 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
776 | char c; |
777 | if (get_user(c, &user_buffer[i])) | |
778 | return -EFAULT; | |
779 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 780 | *num *= 10; |
222f1806 | 781 | *num += c - '0'; |
1da177e4 LT |
782 | } else |
783 | break; | |
784 | } | |
785 | return i; | |
786 | } | |
787 | ||
222f1806 | 788 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 789 | { |
d6182223 | 790 | int i; |
1da177e4 | 791 | |
d6182223 | 792 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
793 | char c; |
794 | if (get_user(c, &user_buffer[i])) | |
795 | return -EFAULT; | |
796 | switch (c) { | |
1da177e4 LT |
797 | case '\"': |
798 | case '\n': | |
799 | case '\r': | |
800 | case '\t': | |
801 | case ' ': | |
802 | goto done_str; | |
803 | break; | |
804 | default: | |
805 | break; | |
3ff50b79 | 806 | } |
1da177e4 LT |
807 | } |
808 | done_str: | |
1da177e4 LT |
809 | return i; |
810 | } | |
811 | ||
ca6549af SW |
812 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
813 | { | |
814 | unsigned n = 0; | |
815 | char c; | |
816 | ssize_t i = 0; | |
817 | int len; | |
818 | ||
819 | pkt_dev->nr_labels = 0; | |
820 | do { | |
821 | __u32 tmp; | |
1ca7768c | 822 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
823 | if (len <= 0) |
824 | return len; | |
825 | pkt_dev->labels[n] = htonl(tmp); | |
826 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
827 | pkt_dev->flags |= F_MPLS_RND; | |
828 | i += len; | |
829 | if (get_user(c, &buffer[i])) | |
830 | return -EFAULT; | |
831 | i++; | |
832 | n++; | |
833 | if (n >= MAX_MPLS_LABELS) | |
834 | return -E2BIG; | |
e71a4783 | 835 | } while (c == ','); |
ca6549af SW |
836 | |
837 | pkt_dev->nr_labels = n; | |
838 | return i; | |
839 | } | |
840 | ||
222f1806 LC |
841 | static ssize_t pktgen_if_write(struct file *file, |
842 | const char __user * user_buffer, size_t count, | |
843 | loff_t * offset) | |
1da177e4 | 844 | { |
8a994a71 | 845 | struct seq_file *seq = file->private_data; |
222f1806 | 846 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 847 | int i, max, len; |
1da177e4 LT |
848 | char name[16], valstr[32]; |
849 | unsigned long value = 0; | |
222f1806 LC |
850 | char *pg_result = NULL; |
851 | int tmp = 0; | |
1da177e4 | 852 | char buf[128]; |
222f1806 LC |
853 | |
854 | pg_result = &(pkt_dev->result[0]); | |
855 | ||
1da177e4 | 856 | if (count < 1) { |
f9467eae | 857 | pr_warning("wrong command format\n"); |
1da177e4 LT |
858 | return -EINVAL; |
859 | } | |
222f1806 | 860 | |
d6182223 PG |
861 | max = count; |
862 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 863 | if (tmp < 0) { |
f9467eae | 864 | pr_warning("illegal format\n"); |
222f1806 | 865 | return tmp; |
1da177e4 | 866 | } |
d6182223 | 867 | i = tmp; |
222f1806 | 868 | |
1da177e4 LT |
869 | /* Read variable name */ |
870 | ||
871 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 872 | if (len < 0) |
222f1806 | 873 | return len; |
63adc6fb | 874 | |
1da177e4 | 875 | memset(name, 0, sizeof(name)); |
222f1806 | 876 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
877 | return -EFAULT; |
878 | i += len; | |
222f1806 LC |
879 | |
880 | max = count - i; | |
1da177e4 | 881 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
882 | if (len < 0) |
883 | return len; | |
884 | ||
1da177e4 LT |
885 | i += len; |
886 | ||
887 | if (debug) { | |
86c2c0a8 | 888 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
889 | char tb[copy + 1]; |
890 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 891 | return -EFAULT; |
448d7b5d | 892 | tb[copy] = 0; |
25a8b254 | 893 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, |
222f1806 LC |
894 | (unsigned long)count, tb); |
895 | } | |
1da177e4 LT |
896 | |
897 | if (!strcmp(name, "min_pkt_size")) { | |
898 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 899 | if (len < 0) |
222f1806 | 900 | return len; |
63adc6fb | 901 | |
1da177e4 | 902 | i += len; |
222f1806 LC |
903 | if (value < 14 + 20 + 8) |
904 | value = 14 + 20 + 8; | |
905 | if (value != pkt_dev->min_pkt_size) { | |
906 | pkt_dev->min_pkt_size = value; | |
907 | pkt_dev->cur_pkt_size = value; | |
908 | } | |
909 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
910 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
911 | return count; |
912 | } | |
913 | ||
222f1806 | 914 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 915 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 916 | if (len < 0) |
222f1806 | 917 | return len; |
63adc6fb | 918 | |
1da177e4 | 919 | i += len; |
222f1806 LC |
920 | if (value < 14 + 20 + 8) |
921 | value = 14 + 20 + 8; | |
922 | if (value != pkt_dev->max_pkt_size) { | |
923 | pkt_dev->max_pkt_size = value; | |
924 | pkt_dev->cur_pkt_size = value; | |
925 | } | |
926 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
927 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
928 | return count; |
929 | } | |
930 | ||
222f1806 | 931 | /* Shortcut for min = max */ |
1da177e4 LT |
932 | |
933 | if (!strcmp(name, "pkt_size")) { | |
934 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 935 | if (len < 0) |
222f1806 | 936 | return len; |
63adc6fb | 937 | |
1da177e4 | 938 | i += len; |
222f1806 LC |
939 | if (value < 14 + 20 + 8) |
940 | value = 14 + 20 + 8; | |
941 | if (value != pkt_dev->min_pkt_size) { | |
942 | pkt_dev->min_pkt_size = value; | |
943 | pkt_dev->max_pkt_size = value; | |
944 | pkt_dev->cur_pkt_size = value; | |
945 | } | |
1da177e4 LT |
946 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
947 | return count; | |
948 | } | |
949 | ||
222f1806 | 950 | if (!strcmp(name, "debug")) { |
1da177e4 | 951 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 952 | if (len < 0) |
222f1806 | 953 | return len; |
63adc6fb | 954 | |
1da177e4 | 955 | i += len; |
222f1806 | 956 | debug = value; |
1da177e4 LT |
957 | sprintf(pg_result, "OK: debug=%u", debug); |
958 | return count; | |
959 | } | |
960 | ||
222f1806 | 961 | if (!strcmp(name, "frags")) { |
1da177e4 | 962 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 963 | if (len < 0) |
222f1806 | 964 | return len; |
63adc6fb | 965 | |
1da177e4 LT |
966 | i += len; |
967 | pkt_dev->nfrags = value; | |
968 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
969 | return count; | |
970 | } | |
971 | if (!strcmp(name, "delay")) { | |
972 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 973 | if (len < 0) |
222f1806 | 974 | return len; |
63adc6fb | 975 | |
1da177e4 | 976 | i += len; |
fd29cf72 SH |
977 | if (value == 0x7FFFFFFF) |
978 | pkt_dev->delay = ULLONG_MAX; | |
979 | else | |
9240d715 | 980 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
981 | |
982 | sprintf(pg_result, "OK: delay=%llu", | |
983 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
984 | return count; |
985 | } | |
43d28b65 DT |
986 | if (!strcmp(name, "rate")) { |
987 | len = num_arg(&user_buffer[i], 10, &value); | |
988 | if (len < 0) | |
989 | return len; | |
990 | ||
991 | i += len; | |
992 | if (!value) | |
993 | return len; | |
994 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
995 | if (debug) | |
f9467eae | 996 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
997 | |
998 | sprintf(pg_result, "OK: rate=%lu", value); | |
999 | return count; | |
1000 | } | |
1001 | if (!strcmp(name, "ratep")) { | |
1002 | len = num_arg(&user_buffer[i], 10, &value); | |
1003 | if (len < 0) | |
1004 | return len; | |
1005 | ||
1006 | i += len; | |
1007 | if (!value) | |
1008 | return len; | |
1009 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1010 | if (debug) | |
f9467eae | 1011 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1012 | |
1013 | sprintf(pg_result, "OK: rate=%lu", value); | |
1014 | return count; | |
1015 | } | |
222f1806 | 1016 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1017 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1018 | if (len < 0) |
222f1806 | 1019 | return len; |
63adc6fb | 1020 | |
1da177e4 | 1021 | i += len; |
222f1806 LC |
1022 | if (value != pkt_dev->udp_src_min) { |
1023 | pkt_dev->udp_src_min = value; | |
1024 | pkt_dev->cur_udp_src = value; | |
1025 | } | |
1da177e4 LT |
1026 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1027 | return count; | |
1028 | } | |
222f1806 | 1029 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1030 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1031 | if (len < 0) |
222f1806 | 1032 | return len; |
63adc6fb | 1033 | |
1da177e4 | 1034 | i += len; |
222f1806 LC |
1035 | if (value != pkt_dev->udp_dst_min) { |
1036 | pkt_dev->udp_dst_min = value; | |
1037 | pkt_dev->cur_udp_dst = value; | |
1038 | } | |
1da177e4 LT |
1039 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1040 | return count; | |
1041 | } | |
222f1806 | 1042 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1043 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1044 | if (len < 0) |
222f1806 | 1045 | return len; |
63adc6fb | 1046 | |
1da177e4 | 1047 | i += len; |
222f1806 LC |
1048 | if (value != pkt_dev->udp_src_max) { |
1049 | pkt_dev->udp_src_max = value; | |
1050 | pkt_dev->cur_udp_src = value; | |
1051 | } | |
1da177e4 LT |
1052 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1053 | return count; | |
1054 | } | |
222f1806 | 1055 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1056 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1057 | if (len < 0) |
222f1806 | 1058 | return len; |
63adc6fb | 1059 | |
1da177e4 | 1060 | i += len; |
222f1806 LC |
1061 | if (value != pkt_dev->udp_dst_max) { |
1062 | pkt_dev->udp_dst_max = value; | |
1063 | pkt_dev->cur_udp_dst = value; | |
1064 | } | |
1da177e4 LT |
1065 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1066 | return count; | |
1067 | } | |
1068 | if (!strcmp(name, "clone_skb")) { | |
1069 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1070 | if (len < 0) |
222f1806 | 1071 | return len; |
63adc6fb | 1072 | |
1da177e4 | 1073 | i += len; |
222f1806 LC |
1074 | pkt_dev->clone_skb = value; |
1075 | ||
1da177e4 LT |
1076 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1077 | return count; | |
1078 | } | |
1079 | if (!strcmp(name, "count")) { | |
1080 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1081 | if (len < 0) |
222f1806 | 1082 | return len; |
63adc6fb | 1083 | |
1da177e4 LT |
1084 | i += len; |
1085 | pkt_dev->count = value; | |
1086 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1087 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1088 | return count; |
1089 | } | |
1090 | if (!strcmp(name, "src_mac_count")) { | |
1091 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1092 | if (len < 0) |
222f1806 | 1093 | return len; |
63adc6fb | 1094 | |
1da177e4 LT |
1095 | i += len; |
1096 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1097 | pkt_dev->src_mac_count = value; |
1098 | pkt_dev->cur_src_mac_offset = 0; | |
1099 | } | |
1100 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1101 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1102 | return count; |
1103 | } | |
1104 | if (!strcmp(name, "dst_mac_count")) { | |
1105 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1106 | if (len < 0) |
222f1806 | 1107 | return len; |
63adc6fb | 1108 | |
1da177e4 LT |
1109 | i += len; |
1110 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1111 | pkt_dev->dst_mac_count = value; |
1112 | pkt_dev->cur_dst_mac_offset = 0; | |
1113 | } | |
1114 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1115 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1116 | return count; |
1117 | } | |
e99b99b4 RO |
1118 | if (!strcmp(name, "node")) { |
1119 | len = num_arg(&user_buffer[i], 10, &value); | |
1120 | if (len < 0) | |
1121 | return len; | |
1122 | ||
1123 | i += len; | |
1124 | ||
1125 | if (node_possible(value)) { | |
1126 | pkt_dev->node = value; | |
1127 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1128 | if (pkt_dev->page) { |
1129 | put_page(pkt_dev->page); | |
1130 | pkt_dev->page = NULL; | |
1131 | } | |
e99b99b4 RO |
1132 | } |
1133 | else | |
1134 | sprintf(pg_result, "ERROR: node not possible"); | |
1135 | return count; | |
1136 | } | |
1da177e4 | 1137 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1138 | char f[32]; |
1139 | memset(f, 0, 32); | |
1da177e4 | 1140 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1141 | if (len < 0) |
222f1806 | 1142 | return len; |
63adc6fb | 1143 | |
1da177e4 LT |
1144 | if (copy_from_user(f, &user_buffer[i], len)) |
1145 | return -EFAULT; | |
1146 | i += len; | |
222f1806 LC |
1147 | if (strcmp(f, "IPSRC_RND") == 0) |
1148 | pkt_dev->flags |= F_IPSRC_RND; | |
1149 | ||
1150 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1151 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1152 | ||
1153 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1154 | pkt_dev->flags |= F_TXSIZE_RND; | |
1155 | ||
1156 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1157 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1158 | ||
1159 | else if (strcmp(f, "IPDST_RND") == 0) | |
1160 | pkt_dev->flags |= F_IPDST_RND; | |
1161 | ||
1162 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1163 | pkt_dev->flags &= ~F_IPDST_RND; | |
1164 | ||
1165 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1166 | pkt_dev->flags |= F_UDPSRC_RND; | |
1167 | ||
1168 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1169 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1170 | ||
1171 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1172 | pkt_dev->flags |= F_UDPDST_RND; | |
1173 | ||
1174 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1175 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1176 | ||
1177 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1178 | pkt_dev->flags |= F_MACSRC_RND; | |
1179 | ||
1180 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1181 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1182 | ||
1183 | else if (strcmp(f, "MACDST_RND") == 0) | |
1184 | pkt_dev->flags |= F_MACDST_RND; | |
1185 | ||
1186 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1187 | pkt_dev->flags &= ~F_MACDST_RND; | |
1188 | ||
ca6549af SW |
1189 | else if (strcmp(f, "MPLS_RND") == 0) |
1190 | pkt_dev->flags |= F_MPLS_RND; | |
1191 | ||
1192 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1193 | pkt_dev->flags &= ~F_MPLS_RND; | |
1194 | ||
34954ddc FF |
1195 | else if (strcmp(f, "VID_RND") == 0) |
1196 | pkt_dev->flags |= F_VID_RND; | |
1197 | ||
1198 | else if (strcmp(f, "!VID_RND") == 0) | |
1199 | pkt_dev->flags &= ~F_VID_RND; | |
1200 | ||
1201 | else if (strcmp(f, "SVID_RND") == 0) | |
1202 | pkt_dev->flags |= F_SVID_RND; | |
1203 | ||
1204 | else if (strcmp(f, "!SVID_RND") == 0) | |
1205 | pkt_dev->flags &= ~F_SVID_RND; | |
1206 | ||
007a531b JHS |
1207 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1208 | pkt_dev->flags |= F_FLOW_SEQ; | |
1209 | ||
45b270f8 RO |
1210 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1211 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1212 | ||
1213 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1214 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1215 | |
1216 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1217 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1218 | ||
1219 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1220 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1221 | #ifdef CONFIG_XFRM |
1222 | else if (strcmp(f, "IPSEC") == 0) | |
1223 | pkt_dev->flags |= F_IPSEC_ON; | |
1224 | #endif | |
1225 | ||
1ca7768c FF |
1226 | else if (strcmp(f, "!IPV6") == 0) |
1227 | pkt_dev->flags &= ~F_IPV6; | |
1228 | ||
e99b99b4 RO |
1229 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1230 | pkt_dev->flags |= F_NODE; | |
1231 | ||
1232 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1233 | pkt_dev->flags &= ~F_NODE; | |
1234 | ||
222f1806 LC |
1235 | else { |
1236 | sprintf(pg_result, | |
1237 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1238 | f, | |
1ca7768c | 1239 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1240 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1241 | return count; |
1242 | } | |
1da177e4 LT |
1243 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1244 | return count; | |
1245 | } | |
1246 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1247 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1248 | if (len < 0) |
222f1806 | 1249 | return len; |
1da177e4 | 1250 | |
222f1806 | 1251 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1252 | return -EFAULT; |
222f1806 LC |
1253 | buf[len] = 0; |
1254 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1255 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1256 | strncpy(pkt_dev->dst_min, buf, len); | |
1257 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1258 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1259 | } | |
1260 | if (debug) | |
25a8b254 | 1261 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", |
222f1806 LC |
1262 | pkt_dev->dst_min); |
1263 | i += len; | |
1da177e4 LT |
1264 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1265 | return count; | |
1266 | } | |
1267 | if (!strcmp(name, "dst_max")) { | |
1268 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1269 | if (len < 0) |
222f1806 | 1270 | return len; |
63adc6fb | 1271 | |
1da177e4 | 1272 | |
222f1806 | 1273 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1274 | return -EFAULT; |
1275 | ||
222f1806 LC |
1276 | buf[len] = 0; |
1277 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1278 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1279 | strncpy(pkt_dev->dst_max, buf, len); | |
1280 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1281 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1282 | } | |
1283 | if (debug) | |
25a8b254 | 1284 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", |
222f1806 | 1285 | pkt_dev->dst_max); |
1da177e4 LT |
1286 | i += len; |
1287 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1288 | return count; | |
1289 | } | |
1290 | if (!strcmp(name, "dst6")) { | |
1291 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1292 | if (len < 0) |
1293 | return len; | |
1da177e4 LT |
1294 | |
1295 | pkt_dev->flags |= F_IPV6; | |
1296 | ||
222f1806 | 1297 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1298 | return -EFAULT; |
222f1806 | 1299 | buf[len] = 0; |
1da177e4 LT |
1300 | |
1301 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
47a0200d | 1302 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 LT |
1303 | |
1304 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); | |
1305 | ||
222f1806 | 1306 | if (debug) |
25a8b254 | 1307 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); |
1da177e4 | 1308 | |
222f1806 | 1309 | i += len; |
1da177e4 LT |
1310 | sprintf(pg_result, "OK: dst6=%s", buf); |
1311 | return count; | |
1312 | } | |
1313 | if (!strcmp(name, "dst6_min")) { | |
1314 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1315 | if (len < 0) |
1316 | return len; | |
1da177e4 LT |
1317 | |
1318 | pkt_dev->flags |= F_IPV6; | |
1319 | ||
222f1806 | 1320 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1321 | return -EFAULT; |
222f1806 | 1322 | buf[len] = 0; |
1da177e4 LT |
1323 | |
1324 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
47a0200d | 1325 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1326 | |
222f1806 LC |
1327 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, |
1328 | &pkt_dev->min_in6_daddr); | |
1329 | if (debug) | |
25a8b254 | 1330 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); |
1da177e4 | 1331 | |
222f1806 | 1332 | i += len; |
1da177e4 LT |
1333 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1334 | return count; | |
1335 | } | |
1336 | if (!strcmp(name, "dst6_max")) { | |
1337 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1338 | if (len < 0) |
1339 | return len; | |
1da177e4 LT |
1340 | |
1341 | pkt_dev->flags |= F_IPV6; | |
1342 | ||
222f1806 | 1343 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1344 | return -EFAULT; |
222f1806 | 1345 | buf[len] = 0; |
1da177e4 LT |
1346 | |
1347 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
47a0200d | 1348 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1349 | |
222f1806 | 1350 | if (debug) |
25a8b254 | 1351 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); |
1da177e4 | 1352 | |
222f1806 | 1353 | i += len; |
1da177e4 LT |
1354 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1355 | return count; | |
1356 | } | |
1357 | if (!strcmp(name, "src6")) { | |
1358 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1359 | if (len < 0) |
1360 | return len; | |
1da177e4 LT |
1361 | |
1362 | pkt_dev->flags |= F_IPV6; | |
1363 | ||
222f1806 | 1364 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1365 | return -EFAULT; |
222f1806 | 1366 | buf[len] = 0; |
1da177e4 LT |
1367 | |
1368 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
47a0200d | 1369 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 LT |
1370 | |
1371 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); | |
1372 | ||
222f1806 | 1373 | if (debug) |
25a8b254 | 1374 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); |
222f1806 LC |
1375 | |
1376 | i += len; | |
1da177e4 LT |
1377 | sprintf(pg_result, "OK: src6=%s", buf); |
1378 | return count; | |
1379 | } | |
1380 | if (!strcmp(name, "src_min")) { | |
1381 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1382 | if (len < 0) |
222f1806 | 1383 | return len; |
63adc6fb | 1384 | |
222f1806 | 1385 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1386 | return -EFAULT; |
222f1806 LC |
1387 | buf[len] = 0; |
1388 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1389 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1390 | strncpy(pkt_dev->src_min, buf, len); | |
1391 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1392 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1393 | } | |
1394 | if (debug) | |
25a8b254 | 1395 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", |
222f1806 | 1396 | pkt_dev->src_min); |
1da177e4 LT |
1397 | i += len; |
1398 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1399 | return count; | |
1400 | } | |
1401 | if (!strcmp(name, "src_max")) { | |
1402 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1403 | if (len < 0) |
222f1806 | 1404 | return len; |
63adc6fb | 1405 | |
222f1806 | 1406 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1407 | return -EFAULT; |
222f1806 LC |
1408 | buf[len] = 0; |
1409 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1410 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1411 | strncpy(pkt_dev->src_max, buf, len); | |
1412 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1413 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1414 | } | |
1415 | if (debug) | |
25a8b254 | 1416 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", |
222f1806 | 1417 | pkt_dev->src_max); |
1da177e4 LT |
1418 | i += len; |
1419 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1420 | return count; | |
1421 | } | |
1422 | if (!strcmp(name, "dst_mac")) { | |
1423 | char *v = valstr; | |
f404e9a6 | 1424 | unsigned char old_dmac[ETH_ALEN]; |
1da177e4 | 1425 | unsigned char *m = pkt_dev->dst_mac; |
f404e9a6 | 1426 | memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1427 | |
1da177e4 | 1428 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1429 | if (len < 0) |
222f1806 | 1430 | return len; |
63adc6fb | 1431 | |
1da177e4 | 1432 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1433 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1434 | return -EFAULT; |
1435 | i += len; | |
1436 | ||
222f1806 | 1437 | for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) { |
451e07a2 AS |
1438 | int value; |
1439 | ||
1440 | value = hex_to_bin(*v); | |
1441 | if (value >= 0) | |
1442 | *m = *m * 16 + value; | |
1443 | ||
1da177e4 LT |
1444 | if (*v == ':') { |
1445 | m++; | |
1446 | *m = 0; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | /* Set up Dest MAC */ | |
f404e9a6 KK |
1451 | if (compare_ether_addr(old_dmac, pkt_dev->dst_mac)) |
1452 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
222f1806 | 1453 | |
1da177e4 LT |
1454 | sprintf(pg_result, "OK: dstmac"); |
1455 | return count; | |
1456 | } | |
1457 | if (!strcmp(name, "src_mac")) { | |
1458 | char *v = valstr; | |
ce5d0b47 | 1459 | unsigned char old_smac[ETH_ALEN]; |
1da177e4 LT |
1460 | unsigned char *m = pkt_dev->src_mac; |
1461 | ||
ce5d0b47 AR |
1462 | memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN); |
1463 | ||
1da177e4 | 1464 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1465 | if (len < 0) |
222f1806 | 1466 | return len; |
63adc6fb | 1467 | |
1da177e4 | 1468 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1469 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1470 | return -EFAULT; |
1471 | i += len; | |
1472 | ||
222f1806 | 1473 | for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) { |
451e07a2 AS |
1474 | int value; |
1475 | ||
1476 | value = hex_to_bin(*v); | |
1477 | if (value >= 0) | |
1478 | *m = *m * 16 + value; | |
1479 | ||
1da177e4 LT |
1480 | if (*v == ':') { |
1481 | m++; | |
1482 | *m = 0; | |
1483 | } | |
222f1806 | 1484 | } |
1da177e4 | 1485 | |
ce5d0b47 AR |
1486 | /* Set up Src MAC */ |
1487 | if (compare_ether_addr(old_smac, pkt_dev->src_mac)) | |
1488 | memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN); | |
1489 | ||
222f1806 | 1490 | sprintf(pg_result, "OK: srcmac"); |
1da177e4 LT |
1491 | return count; |
1492 | } | |
1493 | ||
222f1806 LC |
1494 | if (!strcmp(name, "clear_counters")) { |
1495 | pktgen_clear_counters(pkt_dev); | |
1496 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1497 | return count; | |
1498 | } | |
1da177e4 LT |
1499 | |
1500 | if (!strcmp(name, "flows")) { | |
1501 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1502 | if (len < 0) |
222f1806 | 1503 | return len; |
63adc6fb | 1504 | |
1da177e4 LT |
1505 | i += len; |
1506 | if (value > MAX_CFLOWS) | |
1507 | value = MAX_CFLOWS; | |
1508 | ||
1509 | pkt_dev->cflows = value; | |
1510 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1511 | return count; | |
1512 | } | |
1513 | ||
1514 | if (!strcmp(name, "flowlen")) { | |
1515 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1516 | if (len < 0) |
222f1806 | 1517 | return len; |
63adc6fb | 1518 | |
1da177e4 LT |
1519 | i += len; |
1520 | pkt_dev->lflow = value; | |
1521 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1522 | return count; | |
1523 | } | |
222f1806 | 1524 | |
45b270f8 RO |
1525 | if (!strcmp(name, "queue_map_min")) { |
1526 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1527 | if (len < 0) |
45b270f8 | 1528 | return len; |
63adc6fb | 1529 | |
45b270f8 RO |
1530 | i += len; |
1531 | pkt_dev->queue_map_min = value; | |
1532 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1533 | return count; | |
1534 | } | |
1535 | ||
1536 | if (!strcmp(name, "queue_map_max")) { | |
1537 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1538 | if (len < 0) |
45b270f8 | 1539 | return len; |
63adc6fb | 1540 | |
45b270f8 RO |
1541 | i += len; |
1542 | pkt_dev->queue_map_max = value; | |
1543 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1544 | return count; | |
1545 | } | |
1546 | ||
ca6549af | 1547 | if (!strcmp(name, "mpls")) { |
cfcabdcc SH |
1548 | unsigned n, cnt; |
1549 | ||
ca6549af | 1550 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1551 | if (len < 0) |
1552 | return len; | |
ca6549af | 1553 | i += len; |
cfcabdcc | 1554 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1555 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1556 | cnt += sprintf(pg_result + cnt, |
1557 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1558 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1559 | |
1560 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1561 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1562 | pkt_dev->svlan_id = 0xffff; | |
1563 | ||
1564 | if (debug) | |
25a8b254 | 1565 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1566 | } |
1567 | return count; | |
1568 | } | |
1569 | ||
1570 | if (!strcmp(name, "vlan_id")) { | |
1571 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1572 | if (len < 0) |
34954ddc | 1573 | return len; |
63adc6fb | 1574 | |
34954ddc FF |
1575 | i += len; |
1576 | if (value <= 4095) { | |
1577 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1578 | ||
1579 | if (debug) | |
25a8b254 | 1580 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); |
34954ddc FF |
1581 | |
1582 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1583 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1584 | |
1585 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1586 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1587 | } else { | |
1588 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1589 | pkt_dev->svlan_id = 0xffff; | |
1590 | ||
1591 | if (debug) | |
25a8b254 | 1592 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1593 | } |
1594 | return count; | |
1595 | } | |
1596 | ||
1597 | if (!strcmp(name, "vlan_p")) { | |
1598 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1599 | if (len < 0) |
34954ddc | 1600 | return len; |
63adc6fb | 1601 | |
34954ddc FF |
1602 | i += len; |
1603 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1604 | pkt_dev->vlan_p = value; | |
1605 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1606 | } else { | |
1607 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1608 | } | |
1609 | return count; | |
1610 | } | |
1611 | ||
1612 | if (!strcmp(name, "vlan_cfi")) { | |
1613 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1614 | if (len < 0) |
34954ddc | 1615 | return len; |
63adc6fb | 1616 | |
34954ddc FF |
1617 | i += len; |
1618 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1619 | pkt_dev->vlan_cfi = value; | |
1620 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1621 | } else { | |
1622 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1623 | } | |
1624 | return count; | |
1625 | } | |
1626 | ||
1627 | if (!strcmp(name, "svlan_id")) { | |
1628 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1629 | if (len < 0) |
34954ddc | 1630 | return len; |
63adc6fb | 1631 | |
34954ddc FF |
1632 | i += len; |
1633 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1634 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1635 | ||
1636 | if (debug) | |
25a8b254 | 1637 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); |
34954ddc FF |
1638 | |
1639 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1640 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1641 | |
1642 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1643 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1644 | } else { | |
1645 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1646 | pkt_dev->svlan_id = 0xffff; | |
1647 | ||
1648 | if (debug) | |
25a8b254 | 1649 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1650 | } |
1651 | return count; | |
1652 | } | |
1653 | ||
1654 | if (!strcmp(name, "svlan_p")) { | |
1655 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1656 | if (len < 0) |
34954ddc | 1657 | return len; |
63adc6fb | 1658 | |
34954ddc FF |
1659 | i += len; |
1660 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1661 | pkt_dev->svlan_p = value; | |
1662 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1663 | } else { | |
1664 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1665 | } | |
1666 | return count; | |
1667 | } | |
1668 | ||
1669 | if (!strcmp(name, "svlan_cfi")) { | |
1670 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1671 | if (len < 0) |
34954ddc | 1672 | return len; |
63adc6fb | 1673 | |
34954ddc FF |
1674 | i += len; |
1675 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1676 | pkt_dev->svlan_cfi = value; | |
1677 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1678 | } else { | |
1679 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1680 | } | |
ca6549af SW |
1681 | return count; |
1682 | } | |
1683 | ||
1ca7768c FF |
1684 | if (!strcmp(name, "tos")) { |
1685 | __u32 tmp_value = 0; | |
1686 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1687 | if (len < 0) |
1ca7768c | 1688 | return len; |
63adc6fb | 1689 | |
1ca7768c FF |
1690 | i += len; |
1691 | if (len == 2) { | |
1692 | pkt_dev->tos = tmp_value; | |
1693 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1694 | } else { | |
1695 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1696 | } | |
1697 | return count; | |
1698 | } | |
1699 | ||
1700 | if (!strcmp(name, "traffic_class")) { | |
1701 | __u32 tmp_value = 0; | |
1702 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1703 | if (len < 0) |
1ca7768c | 1704 | return len; |
63adc6fb | 1705 | |
1ca7768c FF |
1706 | i += len; |
1707 | if (len == 2) { | |
1708 | pkt_dev->traffic_class = tmp_value; | |
1709 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1710 | } else { | |
1711 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1712 | } | |
1713 | return count; | |
1714 | } | |
1715 | ||
9e50e3ac JF |
1716 | if (!strcmp(name, "skb_priority")) { |
1717 | len = num_arg(&user_buffer[i], 9, &value); | |
1718 | if (len < 0) | |
1719 | return len; | |
1720 | ||
1721 | i += len; | |
1722 | pkt_dev->skb_priority = value; | |
1723 | sprintf(pg_result, "OK: skb_priority=%i", | |
1724 | pkt_dev->skb_priority); | |
1725 | return count; | |
1726 | } | |
1727 | ||
1da177e4 LT |
1728 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1729 | return -EINVAL; | |
1730 | } | |
1731 | ||
d50a6b56 | 1732 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1733 | { |
d50a6b56 SH |
1734 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1735 | } | |
1da177e4 | 1736 | |
9a32144e | 1737 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1738 | .owner = THIS_MODULE, |
1739 | .open = pktgen_if_open, | |
1740 | .read = seq_read, | |
1741 | .llseek = seq_lseek, | |
1742 | .write = pktgen_if_write, | |
1743 | .release = single_release, | |
d50a6b56 | 1744 | }; |
1da177e4 | 1745 | |
d50a6b56 SH |
1746 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1747 | { | |
222f1806 | 1748 | struct pktgen_thread *t = seq->private; |
648fda74 | 1749 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1750 | |
1751 | BUG_ON(!t); | |
1da177e4 | 1752 | |
222f1806 | 1753 | seq_printf(seq, "Running: "); |
1da177e4 | 1754 | |
222f1806 | 1755 | if_lock(t); |
c26a8016 | 1756 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1757 | if (pkt_dev->running) |
593f63b0 | 1758 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1759 | |
222f1806 LC |
1760 | seq_printf(seq, "\nStopped: "); |
1761 | ||
c26a8016 | 1762 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1763 | if (!pkt_dev->running) |
593f63b0 | 1764 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1765 | |
1766 | if (t->result[0]) | |
d50a6b56 | 1767 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1768 | else |
d50a6b56 | 1769 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1770 | |
222f1806 | 1771 | if_unlock(t); |
1da177e4 | 1772 | |
d50a6b56 | 1773 | return 0; |
1da177e4 LT |
1774 | } |
1775 | ||
d50a6b56 | 1776 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1777 | const char __user * user_buffer, |
1778 | size_t count, loff_t * offset) | |
1da177e4 | 1779 | { |
8a994a71 | 1780 | struct seq_file *seq = file->private_data; |
222f1806 | 1781 | struct pktgen_thread *t = seq->private; |
d6182223 | 1782 | int i, max, len, ret; |
1da177e4 | 1783 | char name[40]; |
222f1806 | 1784 | char *pg_result; |
d50a6b56 | 1785 | |
1da177e4 | 1786 | if (count < 1) { |
222f1806 | 1787 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1788 | return -EINVAL; |
1789 | } | |
d50a6b56 | 1790 | |
d6182223 PG |
1791 | max = count; |
1792 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1793 | if (len < 0) |
d50a6b56 SH |
1794 | return len; |
1795 | ||
d6182223 | 1796 | i = len; |
d50a6b56 | 1797 | |
1da177e4 LT |
1798 | /* Read variable name */ |
1799 | ||
1800 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1801 | if (len < 0) |
d50a6b56 | 1802 | return len; |
222f1806 | 1803 | |
1da177e4 LT |
1804 | memset(name, 0, sizeof(name)); |
1805 | if (copy_from_user(name, &user_buffer[i], len)) | |
1806 | return -EFAULT; | |
1807 | i += len; | |
d50a6b56 | 1808 | |
222f1806 | 1809 | max = count - i; |
1da177e4 | 1810 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1811 | if (len < 0) |
d50a6b56 SH |
1812 | return len; |
1813 | ||
1da177e4 LT |
1814 | i += len; |
1815 | ||
d50a6b56 | 1816 | if (debug) |
25a8b254 DM |
1817 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", |
1818 | name, (unsigned long)count); | |
1da177e4 | 1819 | |
222f1806 | 1820 | if (!t) { |
f9467eae | 1821 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1822 | ret = -EINVAL; |
1823 | goto out; | |
1824 | } | |
1825 | ||
1826 | pg_result = &(t->result[0]); | |
1827 | ||
222f1806 LC |
1828 | if (!strcmp(name, "add_device")) { |
1829 | char f[32]; | |
1830 | memset(f, 0, 32); | |
1da177e4 | 1831 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1832 | if (len < 0) { |
1833 | ret = len; | |
1da177e4 LT |
1834 | goto out; |
1835 | } | |
222f1806 | 1836 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1837 | return -EFAULT; |
1838 | i += len; | |
6146e6a4 | 1839 | mutex_lock(&pktgen_thread_lock); |
222f1806 | 1840 | pktgen_add_device(t, f); |
6146e6a4 | 1841 | mutex_unlock(&pktgen_thread_lock); |
222f1806 LC |
1842 | ret = count; |
1843 | sprintf(pg_result, "OK: add_device=%s", f); | |
1da177e4 LT |
1844 | goto out; |
1845 | } | |
1846 | ||
222f1806 | 1847 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1848 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1849 | t->control |= T_REMDEVALL; |
6146e6a4 | 1850 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1851 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1852 | ret = count; |
222f1806 | 1853 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1854 | goto out; |
1855 | } | |
1856 | ||
222f1806 | 1857 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1858 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1859 | ret = count; |
1da177e4 LT |
1860 | goto out; |
1861 | } | |
1862 | ||
1863 | ret = -EINVAL; | |
222f1806 | 1864 | out: |
1da177e4 LT |
1865 | return ret; |
1866 | } | |
1867 | ||
d50a6b56 | 1868 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1869 | { |
d50a6b56 | 1870 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1871 | } |
1872 | ||
9a32144e | 1873 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1874 | .owner = THIS_MODULE, |
1875 | .open = pktgen_thread_open, | |
1876 | .read = seq_read, | |
1877 | .llseek = seq_lseek, | |
1878 | .write = pktgen_thread_write, | |
1879 | .release = single_release, | |
d50a6b56 | 1880 | }; |
1da177e4 LT |
1881 | |
1882 | /* Think find or remove for NN */ | |
222f1806 | 1883 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) |
1da177e4 LT |
1884 | { |
1885 | struct pktgen_thread *t; | |
1886 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1887 | bool exact = (remove == FIND); |
1da177e4 | 1888 | |
cdcdbe0b | 1889 | list_for_each_entry(t, &pktgen_threads, th_list) { |
3e984840 | 1890 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1891 | if (pkt_dev) { |
222f1806 LC |
1892 | if (remove) { |
1893 | if_lock(t); | |
1894 | pkt_dev->removal_mark = 1; | |
1895 | t->control |= T_REMDEV; | |
1896 | if_unlock(t); | |
1897 | } | |
1da177e4 LT |
1898 | break; |
1899 | } | |
1da177e4 | 1900 | } |
222f1806 | 1901 | return pkt_dev; |
1da177e4 LT |
1902 | } |
1903 | ||
95ed63f7 AK |
1904 | /* |
1905 | * mark a device for removal | |
1906 | */ | |
39df232f | 1907 | static void pktgen_mark_device(const char *ifname) |
1da177e4 LT |
1908 | { |
1909 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1910 | const int max_tries = 10, msec_per_try = 125; |
1911 | int i = 0; | |
95ed63f7 | 1912 | |
6146e6a4 | 1913 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1914 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1915 | |
222f1806 | 1916 | while (1) { |
95ed63f7 AK |
1917 | |
1918 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
222f1806 LC |
1919 | if (pkt_dev == NULL) |
1920 | break; /* success */ | |
95ed63f7 | 1921 | |
6146e6a4 | 1922 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1923 | pr_debug("%s: waiting for %s to disappear....\n", |
1924 | __func__, ifname); | |
95ed63f7 | 1925 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1926 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1927 | |
1928 | if (++i >= max_tries) { | |
f9467eae JP |
1929 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1930 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1931 | break; |
1932 | } | |
1933 | ||
1934 | } | |
1935 | ||
6146e6a4 | 1936 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1937 | } |
95ed63f7 | 1938 | |
39df232f SH |
1939 | static void pktgen_change_name(struct net_device *dev) |
1940 | { | |
1941 | struct pktgen_thread *t; | |
1942 | ||
1943 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1944 | struct pktgen_dev *pkt_dev; | |
1945 | ||
1946 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1947 | if (pkt_dev->odev != dev) | |
1948 | continue; | |
1949 | ||
1950 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1951 | ||
2975315b AD |
1952 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
1953 | pg_proc_dir, | |
1954 | &pktgen_if_fops, | |
1955 | pkt_dev); | |
39df232f | 1956 | if (!pkt_dev->entry) |
f9467eae JP |
1957 | pr_err("can't move proc entry for '%s'\n", |
1958 | dev->name); | |
39df232f SH |
1959 | break; |
1960 | } | |
1961 | } | |
1da177e4 LT |
1962 | } |
1963 | ||
222f1806 LC |
1964 | static int pktgen_device_event(struct notifier_block *unused, |
1965 | unsigned long event, void *ptr) | |
1da177e4 | 1966 | { |
39df232f | 1967 | struct net_device *dev = ptr; |
1da177e4 | 1968 | |
721499e8 | 1969 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
1970 | return NOTIFY_DONE; |
1971 | ||
1da177e4 LT |
1972 | /* It is OK that we do not hold the group lock right now, |
1973 | * as we run under the RTNL lock. | |
1974 | */ | |
1975 | ||
1976 | switch (event) { | |
39df232f SH |
1977 | case NETDEV_CHANGENAME: |
1978 | pktgen_change_name(dev); | |
1da177e4 | 1979 | break; |
222f1806 | 1980 | |
1da177e4 | 1981 | case NETDEV_UNREGISTER: |
222f1806 | 1982 | pktgen_mark_device(dev->name); |
1da177e4 | 1983 | break; |
3ff50b79 | 1984 | } |
1da177e4 LT |
1985 | |
1986 | return NOTIFY_DONE; | |
1987 | } | |
1988 | ||
63adc6fb SH |
1989 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, |
1990 | const char *ifname) | |
e6fce5b9 RO |
1991 | { |
1992 | char b[IFNAMSIZ+5]; | |
d6182223 | 1993 | int i; |
e6fce5b9 | 1994 | |
63adc6fb SH |
1995 | for (i = 0; ifname[i] != '@'; i++) { |
1996 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1997 | break; |
1998 | ||
1999 | b[i] = ifname[i]; | |
2000 | } | |
2001 | b[i] = 0; | |
2002 | ||
2003 | return dev_get_by_name(&init_net, b); | |
2004 | } | |
2005 | ||
2006 | ||
1da177e4 LT |
2007 | /* Associate pktgen_dev with a device. */ |
2008 | ||
39df232f | 2009 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) |
222f1806 | 2010 | { |
1da177e4 | 2011 | struct net_device *odev; |
39df232f | 2012 | int err; |
1da177e4 LT |
2013 | |
2014 | /* Clean old setups */ | |
1da177e4 LT |
2015 | if (pkt_dev->odev) { |
2016 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2017 | pkt_dev->odev = NULL; |
2018 | } | |
1da177e4 | 2019 | |
e6fce5b9 | 2020 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); |
1da177e4 | 2021 | if (!odev) { |
f9467eae | 2022 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2023 | return -ENODEV; |
1da177e4 | 2024 | } |
39df232f | 2025 | |
1da177e4 | 2026 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2027 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2028 | err = -EINVAL; |
2029 | } else if (!netif_running(odev)) { | |
f9467eae | 2030 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2031 | err = -ENETDOWN; |
2032 | } else { | |
2033 | pkt_dev->odev = odev; | |
2034 | return 0; | |
1da177e4 | 2035 | } |
1da177e4 | 2036 | |
1da177e4 | 2037 | dev_put(odev); |
39df232f | 2038 | return err; |
1da177e4 LT |
2039 | } |
2040 | ||
2041 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2042 | * structure to have the right information to create/send packets | |
2043 | */ | |
2044 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2045 | { | |
64c00d81 AG |
2046 | int ntxq; |
2047 | ||
222f1806 | 2048 | if (!pkt_dev->odev) { |
f9467eae | 2049 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2050 | sprintf(pkt_dev->result, |
2051 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2052 | return; | |
2053 | } | |
2054 | ||
64c00d81 AG |
2055 | /* make sure that we don't pick a non-existing transmit queue */ |
2056 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2057 | |
64c00d81 | 2058 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2059 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2060 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2061 | pkt_dev->odevname); | |
64c00d81 AG |
2062 | pkt_dev->queue_map_min = ntxq - 1; |
2063 | } | |
88271660 | 2064 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2065 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2066 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2067 | pkt_dev->odevname); | |
64c00d81 AG |
2068 | pkt_dev->queue_map_max = ntxq - 1; |
2069 | } | |
2070 | ||
222f1806 | 2071 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2072 | |
f404e9a6 | 2073 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2074 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2075 | |
222f1806 | 2076 | /* Set up Dest MAC */ |
f404e9a6 | 2077 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2078 | |
222f1806 LC |
2079 | /* Set up pkt size */ |
2080 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2081 | ||
2082 | if (pkt_dev->flags & F_IPV6) { | |
1da177e4 | 2083 | /* |
4ec93edb | 2084 | * Skip this automatic address setting until locks or functions |
1da177e4 LT |
2085 | * gets exported |
2086 | */ | |
2087 | ||
2088 | #ifdef NOTNOW | |
222f1806 | 2089 | int i, set = 0, err = 1; |
1da177e4 LT |
2090 | struct inet6_dev *idev; |
2091 | ||
222f1806 LC |
2092 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2093 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2094 | set = 1; |
2095 | break; | |
2096 | } | |
2097 | ||
222f1806 LC |
2098 | if (!set) { |
2099 | ||
1da177e4 LT |
2100 | /* |
2101 | * Use linklevel address if unconfigured. | |
2102 | * | |
2103 | * use ipv6_get_lladdr if/when it's get exported | |
2104 | */ | |
2105 | ||
8814c4b5 | 2106 | rcu_read_lock(); |
63adc6fb SH |
2107 | idev = __in6_dev_get(pkt_dev->odev); |
2108 | if (idev) { | |
1da177e4 LT |
2109 | struct inet6_ifaddr *ifp; |
2110 | ||
2111 | read_lock_bh(&idev->lock); | |
222f1806 LC |
2112 | for (ifp = idev->addr_list; ifp; |
2113 | ifp = ifp->if_next) { | |
f64f9e71 JP |
2114 | if (ifp->scope == IFA_LINK && |
2115 | !(ifp->flags & IFA_F_TENTATIVE)) { | |
222f1806 LC |
2116 | ipv6_addr_copy(&pkt_dev-> |
2117 | cur_in6_saddr, | |
2118 | &ifp->addr); | |
1da177e4 LT |
2119 | err = 0; |
2120 | break; | |
2121 | } | |
2122 | } | |
2123 | read_unlock_bh(&idev->lock); | |
2124 | } | |
8814c4b5 | 2125 | rcu_read_unlock(); |
222f1806 | 2126 | if (err) |
f9467eae | 2127 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 LT |
2128 | } |
2129 | #endif | |
222f1806 | 2130 | } else { |
1da177e4 LT |
2131 | pkt_dev->saddr_min = 0; |
2132 | pkt_dev->saddr_max = 0; | |
2133 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2134 | |
2135 | struct in_device *in_dev; | |
1da177e4 LT |
2136 | |
2137 | rcu_read_lock(); | |
e5ed6399 | 2138 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2139 | if (in_dev) { |
2140 | if (in_dev->ifa_list) { | |
222f1806 LC |
2141 | pkt_dev->saddr_min = |
2142 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2143 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2144 | } | |
1da177e4 LT |
2145 | } |
2146 | rcu_read_unlock(); | |
222f1806 | 2147 | } else { |
1da177e4 LT |
2148 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2149 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2150 | } | |
2151 | ||
2152 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2153 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2154 | } | |
222f1806 LC |
2155 | /* Initialize current values. */ |
2156 | pkt_dev->cur_dst_mac_offset = 0; | |
2157 | pkt_dev->cur_src_mac_offset = 0; | |
2158 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2159 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2160 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2161 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2162 | pkt_dev->nflows = 0; |
2163 | } | |
2164 | ||
fd29cf72 SH |
2165 | |
2166 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2167 | { | |
ef87979c | 2168 | ktime_t start_time, end_time; |
417bc4b8 | 2169 | s64 remaining; |
2bc481cf SH |
2170 | struct hrtimer_sleeper t; |
2171 | ||
2172 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2173 | hrtimer_set_expires(&t.timer, spin_until); | |
2174 | ||
43d28b65 | 2175 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2176 | if (remaining <= 0) { |
2177 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2178 | return; |
417bc4b8 | 2179 | } |
2bc481cf | 2180 | |
ef87979c | 2181 | start_time = ktime_now(); |
43d28b65 DT |
2182 | if (remaining < 100000) |
2183 | ndelay(remaining); /* really small just spin */ | |
2bc481cf SH |
2184 | else { |
2185 | /* see do_nanosleep */ | |
2186 | hrtimer_init_sleeper(&t, current); | |
2187 | do { | |
2188 | set_current_state(TASK_INTERRUPTIBLE); | |
2189 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2190 | if (!hrtimer_active(&t.timer)) | |
2191 | t.task = NULL; | |
2192 | ||
2193 | if (likely(t.task)) | |
1da177e4 | 2194 | schedule(); |
1da177e4 | 2195 | |
2bc481cf SH |
2196 | hrtimer_cancel(&t.timer); |
2197 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2198 | __set_current_state(TASK_RUNNING); | |
1da177e4 | 2199 | } |
ef87979c SH |
2200 | end_time = ktime_now(); |
2201 | ||
2202 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2203 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2204 | } |
2205 | ||
16dab72f JHS |
2206 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2207 | { | |
a553e4a6 | 2208 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2209 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2210 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2211 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2212 | } | |
2213 | ||
648fda74 | 2214 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2215 | { |
648fda74 | 2216 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2217 | } |
2218 | ||
2219 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2220 | { | |
2221 | int flow = pkt_dev->curfl; | |
2222 | ||
2223 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2224 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2225 | /* reset time */ | |
2226 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2227 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2228 | pkt_dev->curfl += 1; |
2229 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2230 | pkt_dev->curfl = 0; /*reset */ | |
2231 | } | |
2232 | } else { | |
2233 | flow = random32() % pkt_dev->cflows; | |
1211a645 | 2234 | pkt_dev->curfl = flow; |
007a531b | 2235 | |
1211a645 | 2236 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2237 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2238 | pkt_dev->flows[flow].flags = 0; |
2239 | } | |
007a531b JHS |
2240 | } |
2241 | ||
2242 | return pkt_dev->curfl; | |
2243 | } | |
2244 | ||
a553e4a6 JHS |
2245 | |
2246 | #ifdef CONFIG_XFRM | |
2247 | /* If there was already an IPSEC SA, we keep it as is, else | |
2248 | * we go look for it ... | |
2249 | */ | |
bd55775c | 2250 | #define DUMMY_MARK 0 |
fea1ab0f | 2251 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2252 | { |
2253 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2254 | if (!x) { | |
2255 | /*slow path: we dont already have xfrm_state*/ | |
bd55775c | 2256 | x = xfrm_stateonly_find(&init_net, DUMMY_MARK, |
5447c5e4 | 2257 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2258 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2259 | AF_INET, | |
2260 | pkt_dev->ipsmode, | |
2261 | pkt_dev->ipsproto, 0); | |
2262 | if (x) { | |
2263 | pkt_dev->flows[flow].x = x; | |
2264 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2265 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2266 | } |
2267 | ||
2268 | } | |
2269 | } | |
2270 | #endif | |
fd2ea0a7 DM |
2271 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2272 | { | |
e6fce5b9 RO |
2273 | |
2274 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2275 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2276 | ||
896a7cf8 | 2277 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2278 | __u16 t; |
2279 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2280 | t = random32() % | |
2281 | (pkt_dev->queue_map_max - | |
2282 | pkt_dev->queue_map_min + 1) | |
2283 | + pkt_dev->queue_map_min; | |
2284 | } else { | |
2285 | t = pkt_dev->cur_queue_map + 1; | |
2286 | if (t > pkt_dev->queue_map_max) | |
2287 | t = pkt_dev->queue_map_min; | |
2288 | } | |
2289 | pkt_dev->cur_queue_map = t; | |
2290 | } | |
bfdbc0ac | 2291 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2292 | } |
2293 | ||
1da177e4 LT |
2294 | /* Increment/randomize headers according to flags and current values |
2295 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2296 | */ | |
222f1806 LC |
2297 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2298 | { | |
2299 | __u32 imn; | |
2300 | __u32 imx; | |
2301 | int flow = 0; | |
1da177e4 | 2302 | |
007a531b JHS |
2303 | if (pkt_dev->cflows) |
2304 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2305 | |
2306 | /* Deal with source MAC */ | |
222f1806 LC |
2307 | if (pkt_dev->src_mac_count > 1) { |
2308 | __u32 mc; | |
2309 | __u32 tmp; | |
2310 | ||
2311 | if (pkt_dev->flags & F_MACSRC_RND) | |
5fa6fc76 | 2312 | mc = random32() % pkt_dev->src_mac_count; |
222f1806 LC |
2313 | else { |
2314 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2315 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2316 | pkt_dev->src_mac_count) |
2317 | pkt_dev->cur_src_mac_offset = 0; | |
2318 | } | |
2319 | ||
2320 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2321 | pkt_dev->hh[11] = tmp; | |
2322 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2323 | pkt_dev->hh[10] = tmp; | |
2324 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2325 | pkt_dev->hh[9] = tmp; | |
2326 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2327 | pkt_dev->hh[8] = tmp; | |
2328 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2329 | pkt_dev->hh[7] = tmp; | |
2330 | } | |
2331 | ||
2332 | /* Deal with Destination MAC */ | |
2333 | if (pkt_dev->dst_mac_count > 1) { | |
2334 | __u32 mc; | |
2335 | __u32 tmp; | |
2336 | ||
2337 | if (pkt_dev->flags & F_MACDST_RND) | |
5fa6fc76 | 2338 | mc = random32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2339 | |
2340 | else { | |
2341 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2342 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2343 | pkt_dev->dst_mac_count) { |
2344 | pkt_dev->cur_dst_mac_offset = 0; | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2349 | pkt_dev->hh[5] = tmp; | |
2350 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2351 | pkt_dev->hh[4] = tmp; | |
2352 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2353 | pkt_dev->hh[3] = tmp; | |
2354 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2355 | pkt_dev->hh[2] = tmp; | |
2356 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2357 | pkt_dev->hh[1] = tmp; | |
2358 | } | |
2359 | ||
ca6549af SW |
2360 | if (pkt_dev->flags & F_MPLS_RND) { |
2361 | unsigned i; | |
e71a4783 | 2362 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2363 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2364 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
5fa6fc76 | 2365 | ((__force __be32)random32() & |
ca6549af SW |
2366 | htonl(0x000fffff)); |
2367 | } | |
2368 | ||
34954ddc | 2369 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
5fa6fc76 | 2370 | pkt_dev->vlan_id = random32() & (4096-1); |
34954ddc FF |
2371 | } |
2372 | ||
2373 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
5fa6fc76 | 2374 | pkt_dev->svlan_id = random32() & (4096 - 1); |
34954ddc FF |
2375 | } |
2376 | ||
222f1806 LC |
2377 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2378 | if (pkt_dev->flags & F_UDPSRC_RND) | |
5fa6fc76 SH |
2379 | pkt_dev->cur_udp_src = random32() % |
2380 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2381 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2382 | |
2383 | else { | |
1da177e4 LT |
2384 | pkt_dev->cur_udp_src++; |
2385 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2386 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2387 | } |
2388 | } | |
2389 | ||
2390 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2391 | if (pkt_dev->flags & F_UDPDST_RND) { | |
5fa6fc76 SH |
2392 | pkt_dev->cur_udp_dst = random32() % |
2393 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2394 | + pkt_dev->udp_dst_min; | |
222f1806 | 2395 | } else { |
1da177e4 | 2396 | pkt_dev->cur_udp_dst++; |
222f1806 | 2397 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2398 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2399 | } |
2400 | } | |
1da177e4 LT |
2401 | |
2402 | if (!(pkt_dev->flags & F_IPV6)) { | |
2403 | ||
63adc6fb SH |
2404 | imn = ntohl(pkt_dev->saddr_min); |
2405 | imx = ntohl(pkt_dev->saddr_max); | |
2406 | if (imn < imx) { | |
1da177e4 | 2407 | __u32 t; |
222f1806 | 2408 | if (pkt_dev->flags & F_IPSRC_RND) |
5fa6fc76 | 2409 | t = random32() % (imx - imn) + imn; |
1da177e4 LT |
2410 | else { |
2411 | t = ntohl(pkt_dev->cur_saddr); | |
2412 | t++; | |
63adc6fb | 2413 | if (t > imx) |
1da177e4 | 2414 | t = imn; |
63adc6fb | 2415 | |
1da177e4 LT |
2416 | } |
2417 | pkt_dev->cur_saddr = htonl(t); | |
2418 | } | |
222f1806 | 2419 | |
007a531b | 2420 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2421 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2422 | } else { | |
252e3346 AV |
2423 | imn = ntohl(pkt_dev->daddr_min); |
2424 | imx = ntohl(pkt_dev->daddr_max); | |
2425 | if (imn < imx) { | |
1da177e4 | 2426 | __u32 t; |
252e3346 | 2427 | __be32 s; |
1da177e4 LT |
2428 | if (pkt_dev->flags & F_IPDST_RND) { |
2429 | ||
5fa6fc76 | 2430 | t = random32() % (imx - imn) + imn; |
252e3346 | 2431 | s = htonl(t); |
1da177e4 | 2432 | |
21cf2253 JP |
2433 | while (ipv4_is_loopback(s) || |
2434 | ipv4_is_multicast(s) || | |
1e637c74 | 2435 | ipv4_is_lbcast(s) || |
21cf2253 JP |
2436 | ipv4_is_zeronet(s) || |
2437 | ipv4_is_local_multicast(s)) { | |
5fa6fc76 | 2438 | t = random32() % (imx - imn) + imn; |
252e3346 | 2439 | s = htonl(t); |
1da177e4 | 2440 | } |
252e3346 AV |
2441 | pkt_dev->cur_daddr = s; |
2442 | } else { | |
1da177e4 LT |
2443 | t = ntohl(pkt_dev->cur_daddr); |
2444 | t++; | |
2445 | if (t > imx) { | |
2446 | t = imn; | |
2447 | } | |
2448 | pkt_dev->cur_daddr = htonl(t); | |
2449 | } | |
2450 | } | |
222f1806 | 2451 | if (pkt_dev->cflows) { |
007a531b | 2452 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2453 | pkt_dev->flows[flow].cur_daddr = |
2454 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2455 | #ifdef CONFIG_XFRM |
2456 | if (pkt_dev->flags & F_IPSEC_ON) | |
2457 | get_ipsec_sa(pkt_dev, flow); | |
2458 | #endif | |
1da177e4 LT |
2459 | pkt_dev->nflows++; |
2460 | } | |
2461 | } | |
222f1806 LC |
2462 | } else { /* IPV6 * */ |
2463 | ||
2464 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2465 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2466 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2467 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
1da177e4 LT |
2468 | else { |
2469 | int i; | |
2470 | ||
2471 | /* Only random destinations yet */ | |
2472 | ||
222f1806 | 2473 | for (i = 0; i < 4; i++) { |
1da177e4 | 2474 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
5fa6fc76 | 2475 | (((__force __be32)random32() | |
222f1806 LC |
2476 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2477 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2478 | } |
222f1806 | 2479 | } |
1da177e4 LT |
2480 | } |
2481 | ||
222f1806 LC |
2482 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2483 | __u32 t; | |
2484 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
5fa6fc76 SH |
2485 | t = random32() % |
2486 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2487 | + pkt_dev->min_pkt_size; | |
222f1806 | 2488 | } else { |
1da177e4 | 2489 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2490 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2491 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2492 | } |
2493 | pkt_dev->cur_pkt_size = t; | |
2494 | } | |
1da177e4 | 2495 | |
fd2ea0a7 | 2496 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2497 | |
1da177e4 LT |
2498 | pkt_dev->flows[flow].count++; |
2499 | } | |
2500 | ||
a553e4a6 JHS |
2501 | |
2502 | #ifdef CONFIG_XFRM | |
2503 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2504 | { | |
2505 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2506 | int err = 0; | |
a553e4a6 JHS |
2507 | |
2508 | if (!x) | |
2509 | return 0; | |
2510 | /* XXX: we dont support tunnel mode for now until | |
2511 | * we resolve the dst issue */ | |
2512 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2513 | return 0; | |
2514 | ||
2515 | spin_lock(&x->lock); | |
a553e4a6 | 2516 | |
13996378 | 2517 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2518 | if (err) |
2519 | goto error; | |
2520 | err = x->type->output(x, skb); | |
2521 | if (err) | |
2522 | goto error; | |
2523 | ||
63adc6fb | 2524 | x->curlft.bytes += skb->len; |
a553e4a6 | 2525 | x->curlft.packets++; |
a553e4a6 JHS |
2526 | error: |
2527 | spin_unlock(&x->lock); | |
2528 | return err; | |
2529 | } | |
2530 | ||
475ac1e4 | 2531 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2532 | { |
2533 | if (pkt_dev->cflows) { | |
2534 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2535 | int i; |
2536 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2537 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2538 | if (x) { | |
2539 | xfrm_state_put(x); | |
2540 | pkt_dev->flows[i].x = NULL; | |
2541 | } | |
2542 | } | |
2543 | } | |
2544 | } | |
2545 | ||
475ac1e4 | 2546 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2547 | struct sk_buff *skb, __be16 protocol) |
2548 | { | |
2549 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2550 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2551 | int nhead = 0; | |
2552 | if (x) { | |
2553 | int ret; | |
2554 | __u8 *eth; | |
2555 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2556 | if (nhead > 0) { |
a553e4a6 JHS |
2557 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2558 | if (ret < 0) { | |
f9467eae JP |
2559 | pr_err("Error expanding ipsec packet %d\n", |
2560 | ret); | |
b4bb4ac8 | 2561 | goto err; |
a553e4a6 JHS |
2562 | } |
2563 | } | |
2564 | ||
2565 | /* ipsec is not expecting ll header */ | |
2566 | skb_pull(skb, ETH_HLEN); | |
2567 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2568 | if (ret) { | |
f9467eae | 2569 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2570 | goto err; |
a553e4a6 JHS |
2571 | } |
2572 | /* restore ll */ | |
2573 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2574 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2575 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2576 | } |
2577 | } | |
2578 | return 1; | |
b4bb4ac8 IJ |
2579 | err: |
2580 | kfree_skb(skb); | |
2581 | return 0; | |
a553e4a6 JHS |
2582 | } |
2583 | #endif | |
2584 | ||
ca6549af SW |
2585 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2586 | { | |
2587 | unsigned i; | |
63adc6fb | 2588 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2589 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2590 | |
ca6549af SW |
2591 | mpls--; |
2592 | *mpls |= MPLS_STACK_BOTTOM; | |
2593 | } | |
2594 | ||
0f37c605 AV |
2595 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2596 | unsigned int prio) | |
2597 | { | |
2598 | return htons(id | (cfi << 12) | (prio << 13)); | |
2599 | } | |
2600 | ||
26ad7879 ED |
2601 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2602 | int datalen) | |
2603 | { | |
2604 | struct timeval timestamp; | |
2605 | struct pktgen_hdr *pgh; | |
2606 | ||
2607 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2608 | datalen -= sizeof(*pgh); | |
2609 | ||
2610 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2611 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2612 | } else { |
2613 | int frags = pkt_dev->nfrags; | |
2614 | int i, len; | |
7d36a991 | 2615 | int frag_len; |
26ad7879 ED |
2616 | |
2617 | ||
2618 | if (frags > MAX_SKB_FRAGS) | |
2619 | frags = MAX_SKB_FRAGS; | |
2620 | len = datalen - frags * PAGE_SIZE; | |
2621 | if (len > 0) { | |
2622 | memset(skb_put(skb, len), 0, len); | |
2623 | datalen = frags * PAGE_SIZE; | |
2624 | } | |
2625 | ||
2626 | i = 0; | |
7d36a991 | 2627 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2628 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2629 | while (datalen > 0) { |
2630 | if (unlikely(!pkt_dev->page)) { | |
2631 | int node = numa_node_id(); | |
2632 | ||
2633 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2634 | node = pkt_dev->node; | |
2635 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2636 | if (!pkt_dev->page) | |
2637 | break; | |
2638 | } | |
2639 | skb_shinfo(skb)->frags[i].page = pkt_dev->page; | |
2640 | get_page(pkt_dev->page); | |
2641 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
7d36a991 | 2642 | /*last fragment, fill rest of data*/ |
2643 | if (i == (frags - 1)) | |
2644 | skb_shinfo(skb)->frags[i].size = | |
2645 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); | |
2646 | else | |
2647 | skb_shinfo(skb)->frags[i].size = frag_len; | |
26ad7879 ED |
2648 | datalen -= skb_shinfo(skb)->frags[i].size; |
2649 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2650 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2651 | i++; | |
2652 | skb_shinfo(skb)->nr_frags = i; | |
2653 | } | |
26ad7879 ED |
2654 | } |
2655 | ||
2656 | /* Stamp the time, and sequence number, | |
2657 | * convert them to network byte order | |
2658 | */ | |
2659 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2660 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2661 | ||
2662 | do_gettimeofday(×tamp); | |
2663 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2664 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2665 | } | |
2666 | ||
222f1806 LC |
2667 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2668 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2669 | { |
2670 | struct sk_buff *skb = NULL; | |
2671 | __u8 *eth; | |
2672 | struct udphdr *udph; | |
2673 | int datalen, iplen; | |
2674 | struct iphdr *iph; | |
d5f1ce9a | 2675 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2676 | __be32 *mpls; |
34954ddc FF |
2677 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2678 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2679 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2680 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2681 | u16 queue_map; |
ca6549af SW |
2682 | |
2683 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2684 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2685 | |
34954ddc | 2686 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2687 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2688 | |
64053bee RO |
2689 | /* Update any of the values, used when we're incrementing various |
2690 | * fields. | |
2691 | */ | |
2692 | mod_cur_headers(pkt_dev); | |
eb589063 | 2693 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2694 | |
7ac5459e | 2695 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2696 | |
2697 | if (pkt_dev->flags & F_NODE) { | |
2698 | int node; | |
2699 | ||
2700 | if (pkt_dev->node >= 0) | |
2701 | node = pkt_dev->node; | |
2702 | else | |
2703 | node = numa_node_id(); | |
2704 | ||
2705 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2706 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2707 | if (likely(skb)) { | |
2708 | skb_reserve(skb, NET_SKB_PAD); | |
2709 | skb->dev = odev; | |
2710 | } | |
2711 | } | |
2712 | else | |
2713 | skb = __netdev_alloc_skb(odev, | |
2714 | pkt_dev->cur_pkt_size + 64 | |
2715 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2716 | ||
1da177e4 LT |
2717 | if (!skb) { |
2718 | sprintf(pkt_dev->result, "No memory"); | |
2719 | return NULL; | |
2720 | } | |
a8d764b9 | 2721 | prefetchw(skb->data); |
1da177e4 | 2722 | |
7ac5459e | 2723 | skb_reserve(skb, datalen); |
1da177e4 LT |
2724 | |
2725 | /* Reserve for ethernet and IP header */ | |
2726 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2727 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2728 | if (pkt_dev->nr_labels) | |
2729 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2730 | |
2731 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2732 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2733 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2734 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2735 | pkt_dev->svlan_cfi, | |
2736 | pkt_dev->svlan_p); | |
34954ddc | 2737 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2738 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2739 | } |
2740 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2741 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2742 | pkt_dev->vlan_cfi, | |
2743 | pkt_dev->vlan_p); | |
34954ddc | 2744 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2745 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2746 | } |
2747 | ||
27a884dc | 2748 | skb->network_header = skb->tail; |
b0e380b1 | 2749 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2750 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2751 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2752 | skb->priority = pkt_dev->skb_priority; |
2753 | ||
ddc7b8e3 ACM |
2754 | iph = ip_hdr(skb); |
2755 | udph = udp_hdr(skb); | |
1da177e4 | 2756 | |
1da177e4 | 2757 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2758 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2759 | |
ca6549af SW |
2760 | /* Eth + IPh + UDPh + mpls */ |
2761 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2762 | pkt_dev->pkt_overhead; |
222f1806 | 2763 | if (datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2764 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2765 | |
1da177e4 LT |
2766 | udph->source = htons(pkt_dev->cur_udp_src); |
2767 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2768 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2769 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2770 | |
2771 | iph->ihl = 5; | |
2772 | iph->version = 4; | |
2773 | iph->ttl = 32; | |
1ca7768c | 2774 | iph->tos = pkt_dev->tos; |
222f1806 | 2775 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2776 | iph->saddr = pkt_dev->cur_saddr; |
2777 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2778 | iph->id = htons(pkt_dev->ip_id); |
2779 | pkt_dev->ip_id++; | |
1da177e4 LT |
2780 | iph->frag_off = 0; |
2781 | iplen = 20 + 8 + datalen; | |
2782 | iph->tot_len = htons(iplen); | |
2783 | iph->check = 0; | |
222f1806 | 2784 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2785 | skb->protocol = protocol; |
b0e380b1 | 2786 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2787 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2788 | skb->dev = odev; |
2789 | skb->pkt_type = PACKET_HOST; | |
26ad7879 | 2790 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
1da177e4 | 2791 | |
a553e4a6 JHS |
2792 | #ifdef CONFIG_XFRM |
2793 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2794 | return NULL; | |
2795 | #endif | |
2796 | ||
1da177e4 LT |
2797 | return skb; |
2798 | } | |
2799 | ||
2800 | /* | |
4ec93edb | 2801 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
1da177e4 LT |
2802 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
2803 | * | |
4ec93edb | 2804 | * Slightly modified for kernel. |
1da177e4 LT |
2805 | * Should be candidate for net/ipv4/utils.c |
2806 | * --ro | |
2807 | */ | |
2808 | ||
222f1806 | 2809 | static unsigned int scan_ip6(const char *s, char ip[16]) |
1da177e4 LT |
2810 | { |
2811 | unsigned int i; | |
222f1806 | 2812 | unsigned int len = 0; |
1da177e4 LT |
2813 | unsigned long u; |
2814 | char suffix[16]; | |
222f1806 LC |
2815 | unsigned int prefixlen = 0; |
2816 | unsigned int suffixlen = 0; | |
252e3346 | 2817 | __be32 tmp; |
cfcabdcc | 2818 | char *pos; |
1da177e4 | 2819 | |
222f1806 LC |
2820 | for (i = 0; i < 16; i++) |
2821 | ip[i] = 0; | |
1da177e4 LT |
2822 | |
2823 | for (;;) { | |
2824 | if (*s == ':') { | |
2825 | len++; | |
222f1806 LC |
2826 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
2827 | s += 2; | |
1da177e4 LT |
2828 | len++; |
2829 | break; | |
2830 | } | |
2831 | s++; | |
2832 | } | |
1da177e4 | 2833 | |
cfcabdcc SH |
2834 | u = simple_strtoul(s, &pos, 16); |
2835 | i = pos - s; | |
222f1806 LC |
2836 | if (!i) |
2837 | return 0; | |
2838 | if (prefixlen == 12 && s[i] == '.') { | |
1da177e4 LT |
2839 | |
2840 | /* the last 4 bytes may be written as IPv4 address */ | |
2841 | ||
2842 | tmp = in_aton(s); | |
222f1806 LC |
2843 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); |
2844 | return i + len; | |
1da177e4 LT |
2845 | } |
2846 | ip[prefixlen++] = (u >> 8); | |
2847 | ip[prefixlen++] = (u & 255); | |
222f1806 LC |
2848 | s += i; |
2849 | len += i; | |
2850 | if (prefixlen == 16) | |
1da177e4 LT |
2851 | return len; |
2852 | } | |
2853 | ||
2854 | /* part 2, after "::" */ | |
2855 | for (;;) { | |
2856 | if (*s == ':') { | |
222f1806 | 2857 | if (suffixlen == 0) |
1da177e4 LT |
2858 | break; |
2859 | s++; | |
2860 | len++; | |
222f1806 | 2861 | } else if (suffixlen != 0) |
1da177e4 | 2862 | break; |
cfcabdcc SH |
2863 | |
2864 | u = simple_strtol(s, &pos, 16); | |
2865 | i = pos - s; | |
1da177e4 | 2866 | if (!i) { |
222f1806 LC |
2867 | if (*s) |
2868 | len--; | |
1da177e4 LT |
2869 | break; |
2870 | } | |
222f1806 | 2871 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { |
1da177e4 | 2872 | tmp = in_aton(s); |
222f1806 LC |
2873 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, |
2874 | sizeof(tmp)); | |
2875 | suffixlen += 4; | |
2876 | len += strlen(s); | |
1da177e4 LT |
2877 | break; |
2878 | } | |
2879 | suffix[suffixlen++] = (u >> 8); | |
2880 | suffix[suffixlen++] = (u & 255); | |
222f1806 LC |
2881 | s += i; |
2882 | len += i; | |
2883 | if (prefixlen + suffixlen == 16) | |
1da177e4 LT |
2884 | break; |
2885 | } | |
222f1806 LC |
2886 | for (i = 0; i < suffixlen; i++) |
2887 | ip[16 - suffixlen + i] = suffix[i]; | |
1da177e4 LT |
2888 | return len; |
2889 | } | |
2890 | ||
222f1806 LC |
2891 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2892 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2893 | { |
2894 | struct sk_buff *skb = NULL; | |
2895 | __u8 *eth; | |
2896 | struct udphdr *udph; | |
2897 | int datalen; | |
2898 | struct ipv6hdr *iph; | |
d5f1ce9a | 2899 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2900 | __be32 *mpls; |
34954ddc FF |
2901 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2902 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2903 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2904 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2905 | u16 queue_map; |
ca6549af SW |
2906 | |
2907 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2908 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2909 | |
34954ddc | 2910 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2911 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2912 | |
64053bee RO |
2913 | /* Update any of the values, used when we're incrementing various |
2914 | * fields. | |
2915 | */ | |
2916 | mod_cur_headers(pkt_dev); | |
eb589063 | 2917 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2918 | |
e470757d SH |
2919 | skb = __netdev_alloc_skb(odev, |
2920 | pkt_dev->cur_pkt_size + 64 | |
2921 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
2922 | if (!skb) { |
2923 | sprintf(pkt_dev->result, "No memory"); | |
2924 | return NULL; | |
2925 | } | |
a8d764b9 | 2926 | prefetchw(skb->data); |
1da177e4 LT |
2927 | |
2928 | skb_reserve(skb, 16); | |
2929 | ||
2930 | /* Reserve for ethernet and IP header */ | |
2931 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2932 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2933 | if (pkt_dev->nr_labels) | |
2934 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2935 | |
2936 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2937 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2938 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2939 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2940 | pkt_dev->svlan_cfi, | |
2941 | pkt_dev->svlan_p); | |
34954ddc | 2942 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2943 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2944 | } |
2945 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2946 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2947 | pkt_dev->vlan_cfi, | |
2948 | pkt_dev->vlan_p); | |
34954ddc | 2949 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2950 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2951 | } |
2952 | ||
27a884dc | 2953 | skb->network_header = skb->tail; |
b0e380b1 | 2954 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 2955 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2956 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2957 | skb->priority = pkt_dev->skb_priority; |
ddc7b8e3 ACM |
2958 | iph = ipv6_hdr(skb); |
2959 | udph = udp_hdr(skb); | |
1da177e4 | 2960 | |
1da177e4 | 2961 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2962 | *(__be16 *) ð[12] = protocol; |
64053bee | 2963 | |
ca6549af SW |
2964 | /* Eth + IPh + UDPh + mpls */ |
2965 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2966 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2967 | pkt_dev->pkt_overhead; |
1da177e4 | 2968 | |
222f1806 | 2969 | if (datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 LT |
2970 | datalen = sizeof(struct pktgen_hdr); |
2971 | if (net_ratelimit()) | |
f9467eae | 2972 | pr_info("increased datalen to %d\n", datalen); |
1da177e4 LT |
2973 | } |
2974 | ||
2975 | udph->source = htons(pkt_dev->cur_udp_src); | |
2976 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2977 | udph->len = htons(datalen + sizeof(struct udphdr)); |
2978 | udph->check = 0; /* No checksum */ | |
1da177e4 | 2979 | |
d5f1ce9a | 2980 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2981 | |
1ca7768c FF |
2982 | if (pkt_dev->traffic_class) { |
2983 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2984 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2985 | } |
2986 | ||
1da177e4 LT |
2987 | iph->hop_limit = 32; |
2988 | ||
2989 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
2990 | iph->nexthdr = IPPROTO_UDP; | |
2991 | ||
2992 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); | |
2993 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); | |
2994 | ||
b0e380b1 | 2995 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2996 | pkt_dev->pkt_overhead); |
ca6549af | 2997 | skb->protocol = protocol; |
1da177e4 LT |
2998 | skb->dev = odev; |
2999 | skb->pkt_type = PACKET_HOST; | |
3000 | ||
26ad7879 | 3001 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
222f1806 | 3002 | |
1da177e4 LT |
3003 | return skb; |
3004 | } | |
3005 | ||
475ac1e4 SH |
3006 | static struct sk_buff *fill_packet(struct net_device *odev, |
3007 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3008 | { |
222f1806 | 3009 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3010 | return fill_packet_ipv6(odev, pkt_dev); |
3011 | else | |
3012 | return fill_packet_ipv4(odev, pkt_dev); | |
3013 | } | |
3014 | ||
222f1806 | 3015 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3016 | { |
222f1806 LC |
3017 | pkt_dev->seq_num = 1; |
3018 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3019 | pkt_dev->sofar = 0; |
222f1806 LC |
3020 | pkt_dev->tx_bytes = 0; |
3021 | pkt_dev->errors = 0; | |
1da177e4 LT |
3022 | } |
3023 | ||
3024 | /* Set up structure for sending pkts, clear counters */ | |
3025 | ||
3026 | static void pktgen_run(struct pktgen_thread *t) | |
3027 | { | |
c26a8016 | 3028 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3029 | int started = 0; |
3030 | ||
f9467eae | 3031 | func_enter(); |
1da177e4 LT |
3032 | |
3033 | if_lock(t); | |
c26a8016 | 3034 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
3035 | |
3036 | /* | |
3037 | * setup odev and create initial packet. | |
3038 | */ | |
3039 | pktgen_setup_inject(pkt_dev); | |
3040 | ||
222f1806 | 3041 | if (pkt_dev->odev) { |
1da177e4 | 3042 | pktgen_clear_counters(pkt_dev); |
222f1806 | 3043 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3044 | pkt_dev->skb = NULL; |
fd29cf72 SH |
3045 | pkt_dev->started_at = |
3046 | pkt_dev->next_tx = ktime_now(); | |
3047 | ||
16dab72f | 3048 | set_pkt_overhead(pkt_dev); |
222f1806 | 3049 | |
1da177e4 LT |
3050 | strcpy(pkt_dev->result, "Starting"); |
3051 | started++; | |
222f1806 | 3052 | } else |
1da177e4 LT |
3053 | strcpy(pkt_dev->result, "Error starting"); |
3054 | } | |
3055 | if_unlock(t); | |
222f1806 LC |
3056 | if (started) |
3057 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3058 | } |
3059 | ||
3060 | static void pktgen_stop_all_threads_ifs(void) | |
3061 | { | |
cdcdbe0b | 3062 | struct pktgen_thread *t; |
1da177e4 | 3063 | |
f9467eae | 3064 | func_enter(); |
1da177e4 | 3065 | |
6146e6a4 | 3066 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3067 | |
3068 | list_for_each_entry(t, &pktgen_threads, th_list) | |
95ed63f7 | 3069 | t->control |= T_STOP; |
cdcdbe0b | 3070 | |
6146e6a4 | 3071 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3072 | } |
3073 | ||
648fda74 | 3074 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3075 | { |
648fda74 | 3076 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3077 | |
c26a8016 | 3078 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
3079 | if (pkt_dev->running) |
3080 | return 1; | |
3081 | return 0; | |
1da177e4 LT |
3082 | } |
3083 | ||
222f1806 | 3084 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3085 | { |
222f1806 | 3086 | if_lock(t); |
1da177e4 | 3087 | |
222f1806 | 3088 | while (thread_is_running(t)) { |
1da177e4 | 3089 | |
222f1806 | 3090 | if_unlock(t); |
1da177e4 | 3091 | |
222f1806 | 3092 | msleep_interruptible(100); |
1da177e4 | 3093 | |
222f1806 LC |
3094 | if (signal_pending(current)) |
3095 | goto signal; | |
3096 | if_lock(t); | |
3097 | } | |
3098 | if_unlock(t); | |
3099 | return 1; | |
3100 | signal: | |
3101 | return 0; | |
1da177e4 LT |
3102 | } |
3103 | ||
3104 | static int pktgen_wait_all_threads_run(void) | |
3105 | { | |
cdcdbe0b | 3106 | struct pktgen_thread *t; |
1da177e4 | 3107 | int sig = 1; |
222f1806 | 3108 | |
6146e6a4 | 3109 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3110 | |
3111 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1da177e4 | 3112 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3113 | if (sig == 0) |
3114 | break; | |
1da177e4 | 3115 | } |
cdcdbe0b LC |
3116 | |
3117 | if (sig == 0) | |
3118 | list_for_each_entry(t, &pktgen_threads, th_list) | |
1da177e4 | 3119 | t->control |= (T_STOP); |
cdcdbe0b | 3120 | |
6146e6a4 | 3121 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3122 | return sig; |
3123 | } | |
3124 | ||
3125 | static void pktgen_run_all_threads(void) | |
3126 | { | |
cdcdbe0b | 3127 | struct pktgen_thread *t; |
1da177e4 | 3128 | |
f9467eae | 3129 | func_enter(); |
1da177e4 | 3130 | |
6146e6a4 | 3131 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3132 | |
cdcdbe0b | 3133 | list_for_each_entry(t, &pktgen_threads, th_list) |
1da177e4 | 3134 | t->control |= (T_RUN); |
cdcdbe0b | 3135 | |
6146e6a4 | 3136 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3137 | |
63adc6fb SH |
3138 | /* Propagate thread->control */ |
3139 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3140 | |
1da177e4 LT |
3141 | pktgen_wait_all_threads_run(); |
3142 | } | |
3143 | ||
eb37b41c JB |
3144 | static void pktgen_reset_all_threads(void) |
3145 | { | |
3146 | struct pktgen_thread *t; | |
3147 | ||
f9467eae | 3148 | func_enter(); |
eb37b41c JB |
3149 | |
3150 | mutex_lock(&pktgen_thread_lock); | |
3151 | ||
3152 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3153 | t->control |= (T_REMDEVALL); | |
3154 | ||
3155 | mutex_unlock(&pktgen_thread_lock); | |
3156 | ||
63adc6fb SH |
3157 | /* Propagate thread->control */ |
3158 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c JB |
3159 | |
3160 | pktgen_wait_all_threads_run(); | |
3161 | } | |
3162 | ||
1da177e4 LT |
3163 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3164 | { | |
fd29cf72 | 3165 | __u64 bps, mbps, pps; |
222f1806 | 3166 | char *p = pkt_dev->result; |
fd29cf72 SH |
3167 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3168 | pkt_dev->started_at); | |
3169 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3170 | ||
03a14ab1 | 3171 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3172 | (unsigned long long)ktime_to_us(elapsed), |
3173 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3174 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3175 | (unsigned long long)pkt_dev->sofar, |
3176 | pkt_dev->cur_pkt_size, nr_frags); | |
3177 | ||
fd29cf72 SH |
3178 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3179 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3180 | |
3181 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3182 | ||
3183 | mbps = bps; | |
3184 | do_div(mbps, 1000000); | |
3185 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3186 | (unsigned long long)pps, | |
3187 | (unsigned long long)mbps, | |
3188 | (unsigned long long)bps, | |
3189 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3190 | } |
1da177e4 LT |
3191 | |
3192 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3193 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3194 | { |
222f1806 | 3195 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3196 | |
222f1806 | 3197 | if (!pkt_dev->running) { |
f9467eae JP |
3198 | pr_warning("interface: %s is already stopped\n", |
3199 | pkt_dev->odevname); | |
222f1806 LC |
3200 | return -EINVAL; |
3201 | } | |
1da177e4 | 3202 | |
3bda06a3 SH |
3203 | kfree_skb(pkt_dev->skb); |
3204 | pkt_dev->skb = NULL; | |
fd29cf72 | 3205 | pkt_dev->stopped_at = ktime_now(); |
222f1806 | 3206 | pkt_dev->running = 0; |
1da177e4 | 3207 | |
95ed63f7 | 3208 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3209 | |
222f1806 | 3210 | return 0; |
1da177e4 LT |
3211 | } |
3212 | ||
222f1806 | 3213 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3214 | { |
c26a8016 | 3215 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3216 | |
1da177e4 LT |
3217 | if_lock(t); |
3218 | ||
c26a8016 LC |
3219 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3220 | if (!pkt_dev->running) | |
222f1806 LC |
3221 | continue; |
3222 | if (best == NULL) | |
c26a8016 | 3223 | best = pkt_dev; |
fd29cf72 | 3224 | else if (ktime_lt(pkt_dev->next_tx, best->next_tx)) |
c26a8016 | 3225 | best = pkt_dev; |
1da177e4 LT |
3226 | } |
3227 | if_unlock(t); | |
222f1806 | 3228 | return best; |
1da177e4 LT |
3229 | } |
3230 | ||
222f1806 LC |
3231 | static void pktgen_stop(struct pktgen_thread *t) |
3232 | { | |
c26a8016 | 3233 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3234 | |
f9467eae | 3235 | func_enter(); |
1da177e4 | 3236 | |
222f1806 | 3237 | if_lock(t); |
1da177e4 | 3238 | |
c26a8016 LC |
3239 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3240 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3241 | } |
1da177e4 | 3242 | |
222f1806 | 3243 | if_unlock(t); |
1da177e4 LT |
3244 | } |
3245 | ||
95ed63f7 AK |
3246 | /* |
3247 | * one of our devices needs to be removed - find it | |
3248 | * and remove it | |
3249 | */ | |
3250 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3251 | { | |
c26a8016 LC |
3252 | struct list_head *q, *n; |
3253 | struct pktgen_dev *cur; | |
95ed63f7 | 3254 | |
f9467eae | 3255 | func_enter(); |
95ed63f7 AK |
3256 | |
3257 | if_lock(t); | |
3258 | ||
c26a8016 LC |
3259 | list_for_each_safe(q, n, &t->if_list) { |
3260 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3261 | |
222f1806 LC |
3262 | if (!cur->removal_mark) |
3263 | continue; | |
95ed63f7 | 3264 | |
86dc1ad2 | 3265 | kfree_skb(cur->skb); |
95ed63f7 AK |
3266 | cur->skb = NULL; |
3267 | ||
3268 | pktgen_remove_device(t, cur); | |
3269 | ||
3270 | break; | |
3271 | } | |
3272 | ||
3273 | if_unlock(t); | |
3274 | } | |
3275 | ||
222f1806 | 3276 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3277 | { |
c26a8016 LC |
3278 | struct list_head *q, *n; |
3279 | struct pktgen_dev *cur; | |
222f1806 | 3280 | |
f9467eae JP |
3281 | func_enter(); |
3282 | ||
222f1806 | 3283 | /* Remove all devices, free mem */ |
95ed63f7 | 3284 | |
222f1806 | 3285 | if_lock(t); |
1da177e4 | 3286 | |
c26a8016 LC |
3287 | list_for_each_safe(q, n, &t->if_list) { |
3288 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3289 | |
86dc1ad2 | 3290 | kfree_skb(cur->skb); |
95ed63f7 AK |
3291 | cur->skb = NULL; |
3292 | ||
1da177e4 LT |
3293 | pktgen_remove_device(t, cur); |
3294 | } | |
3295 | ||
222f1806 | 3296 | if_unlock(t); |
1da177e4 LT |
3297 | } |
3298 | ||
222f1806 | 3299 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3300 | { |
222f1806 | 3301 | /* Remove from the thread list */ |
1da177e4 | 3302 | |
ee74baa7 | 3303 | remove_proc_entry(t->tsk->comm, pg_proc_dir); |
1da177e4 | 3304 | |
1da177e4 LT |
3305 | } |
3306 | ||
ef87979c | 3307 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3308 | { |
fd29cf72 | 3309 | ktime_t idle_start = ktime_now(); |
ef87979c SH |
3310 | schedule(); |
3311 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); | |
3312 | } | |
3791decb | 3313 | |
ef87979c SH |
3314 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3315 | { | |
3316 | ktime_t idle_start = ktime_now(); | |
3791decb | 3317 | |
ef87979c SH |
3318 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3319 | if (signal_pending(current)) | |
3320 | break; | |
3321 | ||
3322 | if (need_resched()) | |
3323 | pktgen_resched(pkt_dev); | |
3324 | else | |
3325 | cpu_relax(); | |
3326 | } | |
fd29cf72 | 3327 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); |
3791decb SH |
3328 | } |
3329 | ||
475ac1e4 | 3330 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3331 | { |
00829823 | 3332 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3333 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3334 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3335 | struct netdev_queue *txq; |
fd2ea0a7 | 3336 | u16 queue_map; |
1da177e4 LT |
3337 | int ret; |
3338 | ||
ef87979c SH |
3339 | /* If device is offline, then don't send */ |
3340 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3341 | pktgen_stop_device(pkt_dev); | |
3342 | return; | |
fd2ea0a7 DM |
3343 | } |
3344 | ||
ef87979c SH |
3345 | /* This is max DELAY, this has special meaning of |
3346 | * "never transmit" | |
3347 | */ | |
3348 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
3349 | pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX); | |
3791decb | 3350 | return; |
1da177e4 | 3351 | } |
222f1806 | 3352 | |
ef87979c | 3353 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3354 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3355 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3356 | /* build a new pkt */ | |
3357 | kfree_skb(pkt_dev->skb); | |
3358 | ||
3359 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3360 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3361 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3362 | schedule(); |
3363 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3364 | return; | |
1da177e4 | 3365 | } |
baac8564 | 3366 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3367 | pkt_dev->allocated_skbs++; |
3368 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3369 | } |
95ed63f7 | 3370 | |
ef87979c SH |
3371 | if (pkt_dev->delay && pkt_dev->last_ok) |
3372 | spin(pkt_dev, pkt_dev->next_tx); | |
3373 | ||
fd2ea0a7 DM |
3374 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3375 | txq = netdev_get_tx_queue(odev, queue_map); | |
3376 | ||
3377 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3378 | |
5a0d2268 | 3379 | if (unlikely(netif_tx_queue_frozen_or_stopped(txq))) { |
ef87979c | 3380 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3381 | pkt_dev->last_ok = 0; |
3382 | goto unlock; | |
3383 | } | |
3384 | atomic_inc(&(pkt_dev->skb->users)); | |
3385 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3386 | |
3387 | switch (ret) { | |
3388 | case NETDEV_TX_OK: | |
3389 | txq_trans_update(txq); | |
3390 | pkt_dev->last_ok = 1; | |
3391 | pkt_dev->sofar++; | |
3392 | pkt_dev->seq_num++; | |
baac8564 | 3393 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3394 | break; |
f466dba1 JF |
3395 | case NET_XMIT_DROP: |
3396 | case NET_XMIT_CN: | |
3397 | case NET_XMIT_POLICED: | |
3398 | /* skb has been consumed */ | |
3399 | pkt_dev->errors++; | |
3400 | break; | |
ef87979c SH |
3401 | default: /* Drivers are not supposed to return other values! */ |
3402 | if (net_ratelimit()) | |
58231186 | 3403 | pr_info("%s xmit error: %d\n", pkt_dev->odevname, ret); |
ef87979c SH |
3404 | pkt_dev->errors++; |
3405 | /* fallthru */ | |
3406 | case NETDEV_TX_LOCKED: | |
3407 | case NETDEV_TX_BUSY: | |
3408 | /* Retry it next time */ | |
3409 | atomic_dec(&(pkt_dev->skb->users)); | |
3410 | pkt_dev->last_ok = 0; | |
222f1806 | 3411 | } |
0835acfe | 3412 | unlock: |
fd2ea0a7 | 3413 | __netif_tx_unlock_bh(txq); |
222f1806 | 3414 | |
1da177e4 LT |
3415 | /* If pkt_dev->count is zero, then run forever */ |
3416 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3417 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3418 | |
1da177e4 LT |
3419 | /* Done with this */ |
3420 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3421 | } |
222f1806 | 3422 | } |
1da177e4 | 3423 | |
4ec93edb | 3424 | /* |
1da177e4 LT |
3425 | * Main loop of the thread goes here |
3426 | */ | |
3427 | ||
ee74baa7 | 3428 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3429 | { |
3430 | DEFINE_WAIT(wait); | |
ee74baa7 | 3431 | struct pktgen_thread *t = arg; |
222f1806 | 3432 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3433 | int cpu = t->cpu; |
1da177e4 | 3434 | |
ee74baa7 | 3435 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3436 | |
3437 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3438 | complete(&t->start_done); |
1da177e4 | 3439 | |
f9467eae | 3440 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3441 | |
ee74baa7 | 3442 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3443 | |
83144186 RW |
3444 | set_freezable(); |
3445 | ||
ee74baa7 DM |
3446 | while (!kthread_should_stop()) { |
3447 | pkt_dev = next_to_run(t); | |
1da177e4 | 3448 | |
ef87979c | 3449 | if (unlikely(!pkt_dev && t->control == 0)) { |
551eaff1 ED |
3450 | if (pktgen_exiting) |
3451 | break; | |
ef87979c SH |
3452 | wait_event_interruptible_timeout(t->queue, |
3453 | t->control != 0, | |
3454 | HZ/10); | |
1b3f720b | 3455 | try_to_freeze(); |
ef87979c | 3456 | continue; |
ee74baa7 | 3457 | } |
1da177e4 | 3458 | |
ee74baa7 | 3459 | __set_current_state(TASK_RUNNING); |
222f1806 | 3460 | |
ef87979c | 3461 | if (likely(pkt_dev)) { |
1da177e4 LT |
3462 | pktgen_xmit(pkt_dev); |
3463 | ||
ef87979c SH |
3464 | if (need_resched()) |
3465 | pktgen_resched(pkt_dev); | |
3466 | else | |
3467 | cpu_relax(); | |
3468 | } | |
3469 | ||
222f1806 | 3470 | if (t->control & T_STOP) { |
1da177e4 LT |
3471 | pktgen_stop(t); |
3472 | t->control &= ~(T_STOP); | |
3473 | } | |
3474 | ||
222f1806 | 3475 | if (t->control & T_RUN) { |
1da177e4 LT |
3476 | pktgen_run(t); |
3477 | t->control &= ~(T_RUN); | |
3478 | } | |
3479 | ||
222f1806 | 3480 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3481 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3482 | t->control &= ~(T_REMDEVALL); |
3483 | } | |
3484 | ||
222f1806 | 3485 | if (t->control & T_REMDEV) { |
95ed63f7 | 3486 | pktgen_rem_one_if(t); |
1da177e4 LT |
3487 | t->control &= ~(T_REMDEV); |
3488 | } | |
3489 | ||
09fe3ef4 AM |
3490 | try_to_freeze(); |
3491 | ||
ee74baa7 | 3492 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3493 | } |
1da177e4 | 3494 | |
f9467eae | 3495 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3496 | pktgen_stop(t); |
1da177e4 | 3497 | |
f9467eae | 3498 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3499 | pktgen_rem_all_ifs(t); |
1da177e4 | 3500 | |
f9467eae | 3501 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3502 | pktgen_rem_thread(t); |
cdcdbe0b | 3503 | |
551eaff1 ED |
3504 | /* Wait for kthread_stop */ |
3505 | while (!kthread_should_stop()) { | |
3506 | set_current_state(TASK_INTERRUPTIBLE); | |
3507 | schedule(); | |
3508 | } | |
3509 | __set_current_state(TASK_RUNNING); | |
3510 | ||
ee74baa7 | 3511 | return 0; |
1da177e4 LT |
3512 | } |
3513 | ||
222f1806 | 3514 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3515 | const char *ifname, bool exact) |
1da177e4 | 3516 | { |
c26a8016 | 3517 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3518 | size_t len = strlen(ifname); |
222f1806 | 3519 | |
3e984840 | 3520 | if_lock(t); |
c26a8016 | 3521 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3522 | if (strncmp(p->odevname, ifname, len) == 0) { |
3523 | if (p->odevname[len]) { | |
3524 | if (exact || p->odevname[len] != '@') | |
3525 | continue; | |
3526 | } | |
c26a8016 | 3527 | pkt_dev = p; |
222f1806 LC |
3528 | break; |
3529 | } | |
222f1806 LC |
3530 | |
3531 | if_unlock(t); | |
f9467eae | 3532 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3533 | return pkt_dev; |
1da177e4 LT |
3534 | } |
3535 | ||
4ec93edb YH |
3536 | /* |
3537 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3538 | */ |
3539 | ||
222f1806 LC |
3540 | static int add_dev_to_thread(struct pktgen_thread *t, |
3541 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3542 | { |
3543 | int rv = 0; | |
222f1806 LC |
3544 | |
3545 | if_lock(t); | |
3546 | ||
3547 | if (pkt_dev->pg_thread) { | |
f9467eae | 3548 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3549 | rv = -EBUSY; |
3550 | goto out; | |
3551 | } | |
c26a8016 LC |
3552 | |
3553 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3554 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3555 | pkt_dev->running = 0; |
3556 | ||
222f1806 LC |
3557 | out: |
3558 | if_unlock(t); | |
3559 | return rv; | |
1da177e4 LT |
3560 | } |
3561 | ||
3562 | /* Called under thread lock */ | |
3563 | ||
222f1806 | 3564 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3565 | { |
222f1806 | 3566 | struct pktgen_dev *pkt_dev; |
39df232f | 3567 | int err; |
3291b9db | 3568 | int node = cpu_to_node(t->cpu); |
222f1806 | 3569 | |
1da177e4 LT |
3570 | /* We don't allow a device to be on several threads */ |
3571 | ||
d50a6b56 SH |
3572 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
3573 | if (pkt_dev) { | |
f9467eae | 3574 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3575 | return -EBUSY; |
3576 | } | |
d50a6b56 | 3577 | |
3291b9db | 3578 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3579 | if (!pkt_dev) |
3580 | return -ENOMEM; | |
3581 | ||
593f63b0 | 3582 | strcpy(pkt_dev->odevname, ifname); |
3291b9db ED |
3583 | pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3584 | node); | |
d50a6b56 SH |
3585 | if (pkt_dev->flows == NULL) { |
3586 | kfree(pkt_dev); | |
3587 | return -ENOMEM; | |
3588 | } | |
222f1806 | 3589 | memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state)); |
d50a6b56 | 3590 | |
95ed63f7 | 3591 | pkt_dev->removal_mark = 0; |
d50a6b56 SH |
3592 | pkt_dev->min_pkt_size = ETH_ZLEN; |
3593 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3594 | pkt_dev->nfrags = 0; | |
3595 | pkt_dev->clone_skb = pg_clone_skb_d; | |
fd29cf72 | 3596 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3597 | pkt_dev->count = pg_count_d; |
3598 | pkt_dev->sofar = 0; | |
222f1806 | 3599 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3600 | pkt_dev->udp_src_max = 9; |
3601 | pkt_dev->udp_dst_min = 9; | |
3602 | pkt_dev->udp_dst_max = 9; | |
3603 | ||
34954ddc FF |
3604 | pkt_dev->vlan_p = 0; |
3605 | pkt_dev->vlan_cfi = 0; | |
3606 | pkt_dev->vlan_id = 0xffff; | |
3607 | pkt_dev->svlan_p = 0; | |
3608 | pkt_dev->svlan_cfi = 0; | |
3609 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3610 | pkt_dev->node = -1; |
34954ddc | 3611 | |
39df232f SH |
3612 | err = pktgen_setup_dev(pkt_dev, ifname); |
3613 | if (err) | |
3614 | goto out1; | |
d50a6b56 | 3615 | |
5efdccbc DL |
3616 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, |
3617 | &pktgen_if_fops, pkt_dev); | |
39df232f | 3618 | if (!pkt_dev->entry) { |
f9467eae | 3619 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3620 | PG_PROC_DIR, ifname); |
39df232f SH |
3621 | err = -EINVAL; |
3622 | goto out2; | |
d50a6b56 | 3623 | } |
a553e4a6 JHS |
3624 | #ifdef CONFIG_XFRM |
3625 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3626 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3627 | #endif | |
d50a6b56 SH |
3628 | |
3629 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3630 | out2: |
3631 | dev_put(pkt_dev->odev); | |
3632 | out1: | |
a553e4a6 JHS |
3633 | #ifdef CONFIG_XFRM |
3634 | free_SAs(pkt_dev); | |
3635 | #endif | |
1d0ebfe7 | 3636 | vfree(pkt_dev->flows); |
39df232f SH |
3637 | kfree(pkt_dev); |
3638 | return err; | |
1da177e4 LT |
3639 | } |
3640 | ||
ee74baa7 | 3641 | static int __init pktgen_create_thread(int cpu) |
1da177e4 | 3642 | { |
cdcdbe0b | 3643 | struct pktgen_thread *t; |
d50a6b56 | 3644 | struct proc_dir_entry *pe; |
ee74baa7 | 3645 | struct task_struct *p; |
222f1806 | 3646 | |
3291b9db ED |
3647 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3648 | cpu_to_node(cpu)); | |
222f1806 | 3649 | if (!t) { |
f9467eae | 3650 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3651 | return -ENOMEM; |
3652 | } | |
3653 | ||
222f1806 | 3654 | spin_lock_init(&t->if_lock); |
1da177e4 | 3655 | t->cpu = cpu; |
222f1806 | 3656 | |
ee74baa7 DM |
3657 | INIT_LIST_HEAD(&t->if_list); |
3658 | ||
3659 | list_add_tail(&t->th_list, &pktgen_threads); | |
d3ede327 | 3660 | init_completion(&t->start_done); |
ee74baa7 | 3661 | |
94dcf29a ED |
3662 | p = kthread_create_on_node(pktgen_thread_worker, |
3663 | t, | |
3664 | cpu_to_node(cpu), | |
3665 | "kpktgend_%d", cpu); | |
ee74baa7 | 3666 | if (IS_ERR(p)) { |
f9467eae | 3667 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3668 | list_del(&t->th_list); |
3669 | kfree(t); | |
3670 | return PTR_ERR(p); | |
3671 | } | |
3672 | kthread_bind(p, cpu); | |
3673 | t->tsk = p; | |
3674 | ||
5efdccbc DL |
3675 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, |
3676 | &pktgen_thread_fops, t); | |
222f1806 | 3677 | if (!pe) { |
f9467eae | 3678 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3679 | PG_PROC_DIR, t->tsk->comm); |
3680 | kthread_stop(p); | |
3681 | list_del(&t->th_list); | |
222f1806 LC |
3682 | kfree(t); |
3683 | return -EINVAL; | |
3684 | } | |
d50a6b56 | 3685 | |
ee74baa7 | 3686 | wake_up_process(p); |
d3ede327 | 3687 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3688 | |
3689 | return 0; | |
3690 | } | |
3691 | ||
4ec93edb YH |
3692 | /* |
3693 | * Removes a device from the thread if_list. | |
1da177e4 | 3694 | */ |
222f1806 LC |
3695 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3696 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3697 | { |
c26a8016 LC |
3698 | struct list_head *q, *n; |
3699 | struct pktgen_dev *p; | |
1da177e4 | 3700 | |
c26a8016 LC |
3701 | list_for_each_safe(q, n, &t->if_list) { |
3702 | p = list_entry(q, struct pktgen_dev, list); | |
3703 | if (p == pkt_dev) | |
3704 | list_del(&p->list); | |
1da177e4 LT |
3705 | } |
3706 | } | |
3707 | ||
222f1806 LC |
3708 | static int pktgen_remove_device(struct pktgen_thread *t, |
3709 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3710 | { |
3711 | ||
f9467eae | 3712 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3713 | |
222f1806 | 3714 | if (pkt_dev->running) { |
f9467eae | 3715 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3716 | pktgen_stop_device(pkt_dev); |
3717 | } | |
3718 | ||
3719 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3720 | |
3721 | if (pkt_dev->odev) { | |
3722 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3723 | pkt_dev->odev = NULL; |
3724 | } | |
3725 | ||
1da177e4 LT |
3726 | /* And update the thread if_list */ |
3727 | ||
3728 | _rem_dev_from_if_list(t, pkt_dev); | |
3729 | ||
39df232f SH |
3730 | if (pkt_dev->entry) |
3731 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1da177e4 | 3732 | |
a553e4a6 JHS |
3733 | #ifdef CONFIG_XFRM |
3734 | free_SAs(pkt_dev); | |
3735 | #endif | |
1d0ebfe7 | 3736 | vfree(pkt_dev->flows); |
26ad7879 ED |
3737 | if (pkt_dev->page) |
3738 | put_page(pkt_dev->page); | |
1da177e4 | 3739 | kfree(pkt_dev); |
222f1806 | 3740 | return 0; |
1da177e4 LT |
3741 | } |
3742 | ||
222f1806 | 3743 | static int __init pg_init(void) |
1da177e4 LT |
3744 | { |
3745 | int cpu; | |
d50a6b56 | 3746 | struct proc_dir_entry *pe; |
1da177e4 | 3747 | |
f9467eae | 3748 | pr_info("%s", version); |
1da177e4 | 3749 | |
457c4cbc | 3750 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); |
d50a6b56 SH |
3751 | if (!pg_proc_dir) |
3752 | return -ENODEV; | |
1da177e4 | 3753 | |
25296d59 | 3754 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); |
222f1806 | 3755 | if (pe == NULL) { |
f9467eae | 3756 | pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL); |
457c4cbc | 3757 | proc_net_remove(&init_net, PG_PROC_DIR); |
222f1806 LC |
3758 | return -EINVAL; |
3759 | } | |
1da177e4 | 3760 | |
1da177e4 LT |
3761 | /* Register us to receive netdevice events */ |
3762 | register_netdevice_notifier(&pktgen_notifier_block); | |
222f1806 | 3763 | |
670c02c2 | 3764 | for_each_online_cpu(cpu) { |
8024bb24 | 3765 | int err; |
1da177e4 | 3766 | |
ee74baa7 | 3767 | err = pktgen_create_thread(cpu); |
8024bb24 | 3768 | if (err) |
f9467eae JP |
3769 | pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n", |
3770 | cpu, err); | |
222f1806 | 3771 | } |
8024bb24 LC |
3772 | |
3773 | if (list_empty(&pktgen_threads)) { | |
f9467eae | 3774 | pr_err("ERROR: Initialization failed for all threads\n"); |
8024bb24 LC |
3775 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3776 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
457c4cbc | 3777 | proc_net_remove(&init_net, PG_PROC_DIR); |
8024bb24 LC |
3778 | return -ENODEV; |
3779 | } | |
3780 | ||
222f1806 | 3781 | return 0; |
1da177e4 LT |
3782 | } |
3783 | ||
3784 | static void __exit pg_cleanup(void) | |
3785 | { | |
cdcdbe0b LC |
3786 | struct pktgen_thread *t; |
3787 | struct list_head *q, *n; | |
1da177e4 | 3788 | |
222f1806 | 3789 | /* Stop all interfaces & threads */ |
551eaff1 | 3790 | pktgen_exiting = true; |
1da177e4 | 3791 | |
cdcdbe0b LC |
3792 | list_for_each_safe(q, n, &pktgen_threads) { |
3793 | t = list_entry(q, struct pktgen_thread, th_list); | |
ee74baa7 DM |
3794 | kthread_stop(t->tsk); |
3795 | kfree(t); | |
222f1806 | 3796 | } |
1da177e4 | 3797 | |
222f1806 | 3798 | /* Un-register us from receiving netdevice events */ |
1da177e4 LT |
3799 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3800 | ||
222f1806 | 3801 | /* Clean up proc file system */ |
d50a6b56 | 3802 | remove_proc_entry(PGCTRL, pg_proc_dir); |
457c4cbc | 3803 | proc_net_remove(&init_net, PG_PROC_DIR); |
1da177e4 LT |
3804 | } |
3805 | ||
1da177e4 LT |
3806 | module_init(pg_init); |
3807 | module_exit(pg_cleanup); | |
3808 | ||
c3d2f52d | 3809 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3810 | MODULE_DESCRIPTION("Packet Generator tool"); |
3811 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3812 | MODULE_VERSION(VERSION); |
1da177e4 | 3813 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3814 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3815 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3816 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3817 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3818 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3819 | module_param(debug, int, 0); |
c3d2f52d | 3820 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |