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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
1da177e4 LT |
72 | * way. The if_lock should be possible to remove when add/rem_device is merged |
73 | * into this too. | |
74 | * | |
4ec93edb YH |
75 | * By design there should only be *one* "controlling" process. In practice |
76 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 77 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 78 | * For practical use this should be no problem. |
1da177e4 | 79 | * |
4ec93edb YH |
80 | * Note when adding devices to a specific CPU there good idea to also assign |
81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
82 | * --ro |
83 | * | |
4ec93edb | 84 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
85 | * memleak 030710- KJP |
86 | * | |
87 | * First "ranges" functionality for ipv6 030726 --ro | |
88 | * | |
89 | * Included flow support. 030802 ANK. | |
90 | * | |
91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 92 | * |
1da177e4 LT |
93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
95 | * | |
4ec93edb | 96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
97 | * <shemminger@osdl.org> 040923 |
98 | * | |
4ec93edb | 99 | * Randy Dunlap fixed u64 printk compiler waring |
1da177e4 LT |
100 | * |
101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
103 | * | |
4ec93edb | 104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
106 | * | |
4ec93edb | 107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 108 | * 050103 |
ca6549af SW |
109 | * |
110 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
111 | * | |
34954ddc FF |
112 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
113 | * | |
ce5d0b47 AR |
114 | * Fixed src_mac command to set source mac of packet to value specified in |
115 | * command by Adit Ranadive <adit.262@gmail.com> | |
116 | * | |
1da177e4 | 117 | */ |
f9467eae JP |
118 | |
119 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
120 | ||
1da177e4 LT |
121 | #include <linux/sys.h> |
122 | #include <linux/types.h> | |
123 | #include <linux/module.h> | |
124 | #include <linux/moduleparam.h> | |
125 | #include <linux/kernel.h> | |
222fa076 | 126 | #include <linux/mutex.h> |
1da177e4 LT |
127 | #include <linux/sched.h> |
128 | #include <linux/slab.h> | |
129 | #include <linux/vmalloc.h> | |
1da177e4 LT |
130 | #include <linux/unistd.h> |
131 | #include <linux/string.h> | |
132 | #include <linux/ptrace.h> | |
133 | #include <linux/errno.h> | |
134 | #include <linux/ioport.h> | |
135 | #include <linux/interrupt.h> | |
4fc268d2 | 136 | #include <linux/capability.h> |
2bc481cf | 137 | #include <linux/hrtimer.h> |
09fe3ef4 | 138 | #include <linux/freezer.h> |
1da177e4 LT |
139 | #include <linux/delay.h> |
140 | #include <linux/timer.h> | |
cdcdbe0b | 141 | #include <linux/list.h> |
1da177e4 LT |
142 | #include <linux/init.h> |
143 | #include <linux/skbuff.h> | |
144 | #include <linux/netdevice.h> | |
145 | #include <linux/inet.h> | |
146 | #include <linux/inetdevice.h> | |
147 | #include <linux/rtnetlink.h> | |
148 | #include <linux/if_arp.h> | |
34954ddc | 149 | #include <linux/if_vlan.h> |
1da177e4 LT |
150 | #include <linux/in.h> |
151 | #include <linux/ip.h> | |
152 | #include <linux/ipv6.h> | |
153 | #include <linux/udp.h> | |
154 | #include <linux/proc_fs.h> | |
d50a6b56 | 155 | #include <linux/seq_file.h> |
1da177e4 | 156 | #include <linux/wait.h> |
f404e9a6 | 157 | #include <linux/etherdevice.h> |
ee74baa7 | 158 | #include <linux/kthread.h> |
268bb0ce | 159 | #include <linux/prefetch.h> |
457c4cbc | 160 | #include <net/net_namespace.h> |
1da177e4 LT |
161 | #include <net/checksum.h> |
162 | #include <net/ipv6.h> | |
163 | #include <net/addrconf.h> | |
a553e4a6 JHS |
164 | #ifdef CONFIG_XFRM |
165 | #include <net/xfrm.h> | |
166 | #endif | |
4e58a027 | 167 | #include <net/netns/generic.h> |
1da177e4 LT |
168 | #include <asm/byteorder.h> |
169 | #include <linux/rcupdate.h> | |
1977f032 | 170 | #include <linux/bitops.h> |
63adc6fb SH |
171 | #include <linux/io.h> |
172 | #include <linux/timex.h> | |
173 | #include <linux/uaccess.h> | |
1da177e4 | 174 | #include <asm/dma.h> |
222f1806 | 175 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 176 | |
43d28b65 | 177 | #define VERSION "2.74" |
1da177e4 | 178 | #define IP_NAME_SZ 32 |
ca6549af | 179 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 180 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 181 | |
f9467eae JP |
182 | #define func_enter() pr_debug("entering %s\n", __func__); |
183 | ||
1da177e4 | 184 | /* Device flag bits */ |
222f1806 LC |
185 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
186 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
187 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
188 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
189 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
190 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
191 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
192 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 193 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
194 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
195 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 196 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 197 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 198 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 199 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 200 | #define F_NODE (1<<15) /* Node memory alloc*/ |
1da177e4 LT |
201 | |
202 | /* Thread control flag bits */ | |
6b80d6a6 SH |
203 | #define T_STOP (1<<0) /* Stop run */ |
204 | #define T_RUN (1<<1) /* Start run */ | |
205 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
206 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 207 | |
1da177e4 LT |
208 | /* If lock -- can be removed after some work */ |
209 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
210 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
211 | ||
212 | /* Used to help with determining the pkts on receive */ | |
213 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
214 | #define PG_PROC_DIR "pktgen" |
215 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
216 | |
217 | #define MAX_CFLOWS 65536 | |
218 | ||
34954ddc FF |
219 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
220 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
221 | ||
222f1806 | 222 | struct flow_state { |
252e3346 | 223 | __be32 cur_daddr; |
222f1806 | 224 | int count; |
a553e4a6 JHS |
225 | #ifdef CONFIG_XFRM |
226 | struct xfrm_state *x; | |
227 | #endif | |
007a531b | 228 | __u32 flags; |
1da177e4 LT |
229 | }; |
230 | ||
007a531b JHS |
231 | /* flow flag bits */ |
232 | #define F_INIT (1<<0) /* flow has been initialized */ | |
233 | ||
1da177e4 | 234 | struct pktgen_dev { |
1da177e4 LT |
235 | /* |
236 | * Try to keep frequent/infrequent used vars. separated. | |
237 | */ | |
39df232f SH |
238 | struct proc_dir_entry *entry; /* proc file */ |
239 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 240 | struct list_head list; /* chaining in the thread's run-queue */ |
1da177e4 | 241 | |
63adc6fb | 242 | int running; /* if false, the test will stop */ |
1da177e4 | 243 | |
222f1806 LC |
244 | /* If min != max, then we will either do a linear iteration, or |
245 | * we will do a random selection from within the range. | |
246 | */ | |
247 | __u32 flags; | |
95ed63f7 AK |
248 | int removal_mark; /* non-zero => the device is marked for |
249 | * removal by worker thread */ | |
1da177e4 | 250 | |
68bf9f0b AW |
251 | int min_pkt_size; |
252 | int max_pkt_size; | |
16dab72f | 253 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 254 | int nfrags; |
26ad7879 | 255 | struct page *page; |
fd29cf72 SH |
256 | u64 delay; /* nano-seconds */ |
257 | ||
222f1806 LC |
258 | __u64 count; /* Default No packets to send */ |
259 | __u64 sofar; /* How many pkts we've sent so far */ | |
260 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 261 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
262 | |
263 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
264 | |
265 | __u64 allocated_skbs; | |
266 | __u32 clone_count; | |
267 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
268 | * Or a failed transmit of some sort? |
269 | * This will keep sequence numbers in order | |
222f1806 | 270 | */ |
fd29cf72 SH |
271 | ktime_t next_tx; |
272 | ktime_t started_at; | |
273 | ktime_t stopped_at; | |
274 | u64 idle_acc; /* nano-seconds */ | |
275 | ||
222f1806 LC |
276 | __u32 seq_num; |
277 | ||
63adc6fb SH |
278 | int clone_skb; /* |
279 | * Use multiple SKBs during packet gen. | |
280 | * If this number is greater than 1, then | |
281 | * that many copies of the same packet will be | |
282 | * sent before a new packet is allocated. | |
283 | * If you want to send 1024 identical packets | |
284 | * before creating a new packet, | |
285 | * set clone_skb to 1024. | |
222f1806 LC |
286 | */ |
287 | ||
288 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
289 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
290 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
291 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
292 | ||
293 | struct in6_addr in6_saddr; | |
294 | struct in6_addr in6_daddr; | |
295 | struct in6_addr cur_in6_daddr; | |
296 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 297 | /* For ranges */ |
222f1806 LC |
298 | struct in6_addr min_in6_daddr; |
299 | struct in6_addr max_in6_daddr; | |
300 | struct in6_addr min_in6_saddr; | |
301 | struct in6_addr max_in6_saddr; | |
302 | ||
303 | /* If we're doing ranges, random or incremental, then this | |
304 | * defines the min/max for those ranges. | |
305 | */ | |
252e3346 AV |
306 | __be32 saddr_min; /* inclusive, source IP address */ |
307 | __be32 saddr_max; /* exclusive, source IP address */ | |
308 | __be32 daddr_min; /* inclusive, dest IP address */ | |
309 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
310 | |
311 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
312 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
313 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
314 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
315 | ||
1ca7768c | 316 | /* DSCP + ECN */ |
63adc6fb SH |
317 | __u8 tos; /* six MSB of (former) IPv4 TOS |
318 | are for dscp codepoint */ | |
319 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
320 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 321 | |
ca6549af | 322 | /* MPLS */ |
95c96174 | 323 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
324 | __be32 labels[MAX_MPLS_LABELS]; |
325 | ||
34954ddc FF |
326 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
327 | __u8 vlan_p; | |
328 | __u8 vlan_cfi; | |
329 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
330 | ||
331 | __u8 svlan_p; | |
332 | __u8 svlan_cfi; | |
333 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
334 | ||
222f1806 LC |
335 | __u32 src_mac_count; /* How many MACs to iterate through */ |
336 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
337 | ||
338 | unsigned char dst_mac[ETH_ALEN]; | |
339 | unsigned char src_mac[ETH_ALEN]; | |
340 | ||
341 | __u32 cur_dst_mac_offset; | |
342 | __u32 cur_src_mac_offset; | |
252e3346 AV |
343 | __be32 cur_saddr; |
344 | __be32 cur_daddr; | |
66ed1e5e | 345 | __u16 ip_id; |
222f1806 LC |
346 | __u16 cur_udp_dst; |
347 | __u16 cur_udp_src; | |
45b270f8 | 348 | __u16 cur_queue_map; |
222f1806 | 349 | __u32 cur_pkt_size; |
baac8564 | 350 | __u32 last_pkt_size; |
222f1806 LC |
351 | |
352 | __u8 hh[14]; | |
353 | /* = { | |
354 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
355 | ||
356 | We fill in SRC address later | |
357 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
358 | 0x08, 0x00 | |
359 | }; | |
360 | */ | |
361 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
362 | ||
63adc6fb | 363 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
364 | * are transmitting the same one multiple times |
365 | */ | |
63adc6fb SH |
366 | struct net_device *odev; /* The out-going device. |
367 | * Note that the device should have it's | |
368 | * pg_info pointer pointing back to this | |
369 | * device. | |
370 | * Set when the user specifies the out-going | |
371 | * device name (not when the inject is | |
372 | * started as it used to do.) | |
373 | */ | |
593f63b0 | 374 | char odevname[32]; |
1da177e4 | 375 | struct flow_state *flows; |
95c96174 ED |
376 | unsigned int cflows; /* Concurrent flows (config) */ |
377 | unsigned int lflow; /* Flow length (config) */ | |
378 | unsigned int nflows; /* accumulated flows (stats) */ | |
379 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
380 | |
381 | u16 queue_map_min; | |
382 | u16 queue_map_max; | |
9e50e3ac | 383 | __u32 skb_priority; /* skb priority field */ |
e99b99b4 | 384 | int node; /* Memory node */ |
45b270f8 | 385 | |
a553e4a6 JHS |
386 | #ifdef CONFIG_XFRM |
387 | __u8 ipsmode; /* IPSEC mode (config) */ | |
388 | __u8 ipsproto; /* IPSEC type (config) */ | |
389 | #endif | |
39df232f | 390 | char result[512]; |
1da177e4 LT |
391 | }; |
392 | ||
393 | struct pktgen_hdr { | |
252e3346 AV |
394 | __be32 pgh_magic; |
395 | __be32 seq_num; | |
396 | __be32 tv_sec; | |
397 | __be32 tv_usec; | |
1da177e4 LT |
398 | }; |
399 | ||
4e58a027 CW |
400 | |
401 | static int pg_net_id __read_mostly; | |
402 | ||
403 | struct pktgen_net { | |
404 | struct net *net; | |
405 | struct proc_dir_entry *proc_dir; | |
406 | struct list_head pktgen_threads; | |
407 | bool pktgen_exiting; | |
408 | }; | |
551eaff1 | 409 | |
1da177e4 | 410 | struct pktgen_thread { |
63adc6fb | 411 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 412 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 413 | struct list_head th_list; |
ee74baa7 | 414 | struct task_struct *tsk; |
222f1806 | 415 | char result[512]; |
222f1806 | 416 | |
63adc6fb SH |
417 | /* Field for thread to receive "posted" events terminate, |
418 | stop ifs etc. */ | |
222f1806 LC |
419 | |
420 | u32 control; | |
1da177e4 LT |
421 | int cpu; |
422 | ||
222f1806 | 423 | wait_queue_head_t queue; |
d3ede327 | 424 | struct completion start_done; |
4e58a027 | 425 | struct pktgen_net *net; |
1da177e4 LT |
426 | }; |
427 | ||
428 | #define REMOVE 1 | |
429 | #define FIND 0 | |
430 | ||
c3d2f52d | 431 | static const char version[] = |
f9467eae JP |
432 | "Packet Generator for packet performance testing. " |
433 | "Version: " VERSION "\n"; | |
1da177e4 | 434 | |
222f1806 LC |
435 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
436 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
437 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 438 | const char *ifname, bool exact); |
1da177e4 | 439 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
440 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
441 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
442 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 443 | |
222f1806 | 444 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 445 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 446 | |
1da177e4 | 447 | /* Module parameters, defaults. */ |
65c5b786 SH |
448 | static int pg_count_d __read_mostly = 1000; |
449 | static int pg_delay_d __read_mostly; | |
450 | static int pg_clone_skb_d __read_mostly; | |
451 | static int debug __read_mostly; | |
1da177e4 | 452 | |
222fa076 | 453 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 454 | |
1da177e4 LT |
455 | static struct notifier_block pktgen_notifier_block = { |
456 | .notifier_call = pktgen_device_event, | |
457 | }; | |
458 | ||
1da177e4 | 459 | /* |
4ec93edb | 460 | * /proc handling functions |
1da177e4 LT |
461 | * |
462 | */ | |
463 | ||
d50a6b56 | 464 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 465 | { |
c3d2f52d | 466 | seq_puts(seq, version); |
d50a6b56 | 467 | return 0; |
1da177e4 LT |
468 | } |
469 | ||
63adc6fb SH |
470 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
471 | size_t count, loff_t *ppos) | |
1da177e4 | 472 | { |
1da177e4 | 473 | int err = 0; |
d50a6b56 | 474 | char data[128]; |
4e58a027 | 475 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 476 | |
222f1806 LC |
477 | if (!capable(CAP_NET_ADMIN)) { |
478 | err = -EPERM; | |
1da177e4 | 479 | goto out; |
222f1806 | 480 | } |
1da177e4 | 481 | |
d50a6b56 SH |
482 | if (count > sizeof(data)) |
483 | count = sizeof(data); | |
1da177e4 | 484 | |
1da177e4 | 485 | if (copy_from_user(data, buf, count)) { |
b4099fab | 486 | err = -EFAULT; |
d50a6b56 | 487 | goto out; |
222f1806 LC |
488 | } |
489 | data[count - 1] = 0; /* Make string */ | |
1da177e4 | 490 | |
222f1806 | 491 | if (!strcmp(data, "stop")) |
4e58a027 | 492 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 493 | |
222f1806 | 494 | else if (!strcmp(data, "start")) |
4e58a027 | 495 | pktgen_run_all_threads(pn); |
1da177e4 | 496 | |
eb37b41c | 497 | else if (!strcmp(data, "reset")) |
4e58a027 | 498 | pktgen_reset_all_threads(pn); |
eb37b41c | 499 | |
222f1806 | 500 | else |
f9467eae | 501 | pr_warning("Unknown command: %s\n", data); |
1da177e4 LT |
502 | |
503 | err = count; | |
504 | ||
222f1806 LC |
505 | out: |
506 | return err; | |
1da177e4 LT |
507 | } |
508 | ||
d50a6b56 SH |
509 | static int pgctrl_open(struct inode *inode, struct file *file) |
510 | { | |
511 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
512 | } | |
513 | ||
9a32144e | 514 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
515 | .owner = THIS_MODULE, |
516 | .open = pgctrl_open, | |
517 | .read = seq_read, | |
518 | .llseek = seq_lseek, | |
519 | .write = pgctrl_write, | |
520 | .release = single_release, | |
d50a6b56 SH |
521 | }; |
522 | ||
523 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 524 | { |
648fda74 | 525 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
526 | ktime_t stopped; |
527 | u64 idle; | |
222f1806 LC |
528 | |
529 | seq_printf(seq, | |
530 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
531 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
532 | pkt_dev->max_pkt_size); | |
533 | ||
534 | seq_printf(seq, | |
fd29cf72 SH |
535 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
536 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 537 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
538 | |
539 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
540 | pkt_dev->lflow); | |
541 | ||
45b270f8 RO |
542 | seq_printf(seq, |
543 | " queue_map_min: %u queue_map_max: %u\n", | |
544 | pkt_dev->queue_map_min, | |
545 | pkt_dev->queue_map_max); | |
546 | ||
9e50e3ac JF |
547 | if (pkt_dev->skb_priority) |
548 | seq_printf(seq, " skb_priority: %u\n", | |
549 | pkt_dev->skb_priority); | |
550 | ||
222f1806 | 551 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 552 | seq_printf(seq, |
47a0200d AD |
553 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
554 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
555 | &pkt_dev->in6_saddr, | |
556 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
557 | &pkt_dev->in6_daddr, | |
558 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
559 | } else { |
560 | seq_printf(seq, | |
561 | " dst_min: %s dst_max: %s\n", | |
562 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 563 | seq_printf(seq, |
63adc6fb SH |
564 | " src_min: %s src_max: %s\n", |
565 | pkt_dev->src_min, pkt_dev->src_max); | |
566 | } | |
1da177e4 | 567 | |
222f1806 | 568 | seq_puts(seq, " src_mac: "); |
1da177e4 | 569 | |
e174961c JB |
570 | seq_printf(seq, "%pM ", |
571 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
572 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 LC |
573 | |
574 | seq_printf(seq, "dst_mac: "); | |
e174961c | 575 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
576 | |
577 | seq_printf(seq, | |
63adc6fb SH |
578 | " udp_src_min: %d udp_src_max: %d" |
579 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
580 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
581 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
582 | ||
583 | seq_printf(seq, | |
ca6549af | 584 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 585 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 586 | |
ca6549af | 587 | if (pkt_dev->nr_labels) { |
95c96174 | 588 | unsigned int i; |
ca6549af | 589 | seq_printf(seq, " mpls: "); |
e71a4783 | 590 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
591 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
592 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
593 | } | |
594 | ||
63adc6fb | 595 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 596 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
597 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
598 | pkt_dev->vlan_cfi); | |
34954ddc | 599 | |
63adc6fb | 600 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 601 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
602 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
603 | pkt_dev->svlan_cfi); | |
34954ddc | 604 | |
63adc6fb | 605 | if (pkt_dev->tos) |
1ca7768c | 606 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 607 | |
63adc6fb | 608 | if (pkt_dev->traffic_class) |
1ca7768c | 609 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 610 | |
e99b99b4 RO |
611 | if (pkt_dev->node >= 0) |
612 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
613 | ||
ca6549af SW |
614 | seq_printf(seq, " Flags: "); |
615 | ||
222f1806 LC |
616 | if (pkt_dev->flags & F_IPV6) |
617 | seq_printf(seq, "IPV6 "); | |
1da177e4 | 618 | |
222f1806 LC |
619 | if (pkt_dev->flags & F_IPSRC_RND) |
620 | seq_printf(seq, "IPSRC_RND "); | |
1da177e4 | 621 | |
222f1806 LC |
622 | if (pkt_dev->flags & F_IPDST_RND) |
623 | seq_printf(seq, "IPDST_RND "); | |
1da177e4 | 624 | |
222f1806 LC |
625 | if (pkt_dev->flags & F_TXSIZE_RND) |
626 | seq_printf(seq, "TXSIZE_RND "); | |
1da177e4 | 627 | |
222f1806 LC |
628 | if (pkt_dev->flags & F_UDPSRC_RND) |
629 | seq_printf(seq, "UDPSRC_RND "); | |
1da177e4 | 630 | |
222f1806 LC |
631 | if (pkt_dev->flags & F_UDPDST_RND) |
632 | seq_printf(seq, "UDPDST_RND "); | |
1da177e4 | 633 | |
ca6549af SW |
634 | if (pkt_dev->flags & F_MPLS_RND) |
635 | seq_printf(seq, "MPLS_RND "); | |
636 | ||
45b270f8 RO |
637 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
638 | seq_printf(seq, "QUEUE_MAP_RND "); | |
639 | ||
e6fce5b9 RO |
640 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
641 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
642 | ||
007a531b JHS |
643 | if (pkt_dev->cflows) { |
644 | if (pkt_dev->flags & F_FLOW_SEQ) | |
645 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
646 | else | |
647 | seq_printf(seq, "FLOW_RND "); | |
648 | } | |
649 | ||
a553e4a6 JHS |
650 | #ifdef CONFIG_XFRM |
651 | if (pkt_dev->flags & F_IPSEC_ON) | |
652 | seq_printf(seq, "IPSEC "); | |
653 | #endif | |
654 | ||
222f1806 LC |
655 | if (pkt_dev->flags & F_MACSRC_RND) |
656 | seq_printf(seq, "MACSRC_RND "); | |
1da177e4 | 657 | |
222f1806 LC |
658 | if (pkt_dev->flags & F_MACDST_RND) |
659 | seq_printf(seq, "MACDST_RND "); | |
1da177e4 | 660 | |
34954ddc FF |
661 | if (pkt_dev->flags & F_VID_RND) |
662 | seq_printf(seq, "VID_RND "); | |
663 | ||
664 | if (pkt_dev->flags & F_SVID_RND) | |
665 | seq_printf(seq, "SVID_RND "); | |
666 | ||
e99b99b4 RO |
667 | if (pkt_dev->flags & F_NODE) |
668 | seq_printf(seq, "NODE_ALLOC "); | |
669 | ||
222f1806 LC |
670 | seq_puts(seq, "\n"); |
671 | ||
fd29cf72 | 672 | /* not really stopped, more like last-running-at */ |
398f382c | 673 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
674 | idle = pkt_dev->idle_acc; |
675 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 676 | |
222f1806 | 677 | seq_printf(seq, |
fd29cf72 | 678 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 679 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
680 | (unsigned long long)pkt_dev->errors); |
681 | ||
682 | seq_printf(seq, | |
683 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
684 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
685 | (unsigned long long) ktime_to_us(stopped), | |
686 | (unsigned long long) idle); | |
1da177e4 | 687 | |
222f1806 LC |
688 | seq_printf(seq, |
689 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
690 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
691 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 692 | |
222f1806 | 693 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
694 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
695 | &pkt_dev->cur_in6_saddr, | |
696 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 697 | } else |
0373a946 AW |
698 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
699 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 700 | |
222f1806 | 701 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 702 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 703 | |
45b270f8 RO |
704 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
705 | ||
222f1806 | 706 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
707 | |
708 | if (pkt_dev->result[0]) | |
222f1806 | 709 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 710 | else |
222f1806 | 711 | seq_printf(seq, "Result: Idle\n"); |
1da177e4 | 712 | |
d50a6b56 | 713 | return 0; |
1da177e4 LT |
714 | } |
715 | ||
ca6549af | 716 | |
63adc6fb SH |
717 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
718 | __u32 *num) | |
ca6549af SW |
719 | { |
720 | int i = 0; | |
721 | *num = 0; | |
722 | ||
e71a4783 | 723 | for (; i < maxlen; i++) { |
82fd5b5d | 724 | int value; |
ca6549af SW |
725 | char c; |
726 | *num <<= 4; | |
727 | if (get_user(c, &user_buffer[i])) | |
728 | return -EFAULT; | |
82fd5b5d AS |
729 | value = hex_to_bin(c); |
730 | if (value >= 0) | |
731 | *num |= value; | |
ca6549af SW |
732 | else |
733 | break; | |
734 | } | |
735 | return i; | |
736 | } | |
737 | ||
222f1806 LC |
738 | static int count_trail_chars(const char __user * user_buffer, |
739 | unsigned int maxlen) | |
1da177e4 LT |
740 | { |
741 | int i; | |
742 | ||
743 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
744 | char c; |
745 | if (get_user(c, &user_buffer[i])) | |
746 | return -EFAULT; | |
747 | switch (c) { | |
1da177e4 LT |
748 | case '\"': |
749 | case '\n': | |
750 | case '\r': | |
751 | case '\t': | |
752 | case ' ': | |
753 | case '=': | |
754 | break; | |
755 | default: | |
756 | goto done; | |
3ff50b79 | 757 | } |
1da177e4 LT |
758 | } |
759 | done: | |
760 | return i; | |
761 | } | |
762 | ||
bf0813bd PG |
763 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
764 | unsigned long *num) | |
1da177e4 | 765 | { |
d6182223 | 766 | int i; |
1da177e4 | 767 | *num = 0; |
222f1806 | 768 | |
d6182223 | 769 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
770 | char c; |
771 | if (get_user(c, &user_buffer[i])) | |
772 | return -EFAULT; | |
773 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 774 | *num *= 10; |
222f1806 | 775 | *num += c - '0'; |
1da177e4 LT |
776 | } else |
777 | break; | |
778 | } | |
779 | return i; | |
780 | } | |
781 | ||
222f1806 | 782 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 783 | { |
d6182223 | 784 | int i; |
1da177e4 | 785 | |
d6182223 | 786 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
787 | char c; |
788 | if (get_user(c, &user_buffer[i])) | |
789 | return -EFAULT; | |
790 | switch (c) { | |
1da177e4 LT |
791 | case '\"': |
792 | case '\n': | |
793 | case '\r': | |
794 | case '\t': | |
795 | case ' ': | |
796 | goto done_str; | |
797 | break; | |
798 | default: | |
799 | break; | |
3ff50b79 | 800 | } |
1da177e4 LT |
801 | } |
802 | done_str: | |
1da177e4 LT |
803 | return i; |
804 | } | |
805 | ||
ca6549af SW |
806 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
807 | { | |
95c96174 | 808 | unsigned int n = 0; |
ca6549af SW |
809 | char c; |
810 | ssize_t i = 0; | |
811 | int len; | |
812 | ||
813 | pkt_dev->nr_labels = 0; | |
814 | do { | |
815 | __u32 tmp; | |
1ca7768c | 816 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
817 | if (len <= 0) |
818 | return len; | |
819 | pkt_dev->labels[n] = htonl(tmp); | |
820 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
821 | pkt_dev->flags |= F_MPLS_RND; | |
822 | i += len; | |
823 | if (get_user(c, &buffer[i])) | |
824 | return -EFAULT; | |
825 | i++; | |
826 | n++; | |
827 | if (n >= MAX_MPLS_LABELS) | |
828 | return -E2BIG; | |
e71a4783 | 829 | } while (c == ','); |
ca6549af SW |
830 | |
831 | pkt_dev->nr_labels = n; | |
832 | return i; | |
833 | } | |
834 | ||
222f1806 LC |
835 | static ssize_t pktgen_if_write(struct file *file, |
836 | const char __user * user_buffer, size_t count, | |
837 | loff_t * offset) | |
1da177e4 | 838 | { |
8a994a71 | 839 | struct seq_file *seq = file->private_data; |
222f1806 | 840 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 841 | int i, max, len; |
1da177e4 LT |
842 | char name[16], valstr[32]; |
843 | unsigned long value = 0; | |
222f1806 LC |
844 | char *pg_result = NULL; |
845 | int tmp = 0; | |
1da177e4 | 846 | char buf[128]; |
222f1806 LC |
847 | |
848 | pg_result = &(pkt_dev->result[0]); | |
849 | ||
1da177e4 | 850 | if (count < 1) { |
f9467eae | 851 | pr_warning("wrong command format\n"); |
1da177e4 LT |
852 | return -EINVAL; |
853 | } | |
222f1806 | 854 | |
d6182223 PG |
855 | max = count; |
856 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 857 | if (tmp < 0) { |
f9467eae | 858 | pr_warning("illegal format\n"); |
222f1806 | 859 | return tmp; |
1da177e4 | 860 | } |
d6182223 | 861 | i = tmp; |
222f1806 | 862 | |
1da177e4 LT |
863 | /* Read variable name */ |
864 | ||
865 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 866 | if (len < 0) |
222f1806 | 867 | return len; |
63adc6fb | 868 | |
1da177e4 | 869 | memset(name, 0, sizeof(name)); |
222f1806 | 870 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
871 | return -EFAULT; |
872 | i += len; | |
222f1806 LC |
873 | |
874 | max = count - i; | |
1da177e4 | 875 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
876 | if (len < 0) |
877 | return len; | |
878 | ||
1da177e4 LT |
879 | i += len; |
880 | ||
881 | if (debug) { | |
86c2c0a8 | 882 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
883 | char tb[copy + 1]; |
884 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 885 | return -EFAULT; |
448d7b5d | 886 | tb[copy] = 0; |
f342cda7 JP |
887 | pr_debug("%s,%lu buffer -:%s:-\n", |
888 | name, (unsigned long)count, tb); | |
222f1806 | 889 | } |
1da177e4 LT |
890 | |
891 | if (!strcmp(name, "min_pkt_size")) { | |
892 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 893 | if (len < 0) |
222f1806 | 894 | return len; |
63adc6fb | 895 | |
1da177e4 | 896 | i += len; |
222f1806 LC |
897 | if (value < 14 + 20 + 8) |
898 | value = 14 + 20 + 8; | |
899 | if (value != pkt_dev->min_pkt_size) { | |
900 | pkt_dev->min_pkt_size = value; | |
901 | pkt_dev->cur_pkt_size = value; | |
902 | } | |
903 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
904 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
905 | return count; |
906 | } | |
907 | ||
222f1806 | 908 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 909 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 910 | if (len < 0) |
222f1806 | 911 | return len; |
63adc6fb | 912 | |
1da177e4 | 913 | i += len; |
222f1806 LC |
914 | if (value < 14 + 20 + 8) |
915 | value = 14 + 20 + 8; | |
916 | if (value != pkt_dev->max_pkt_size) { | |
917 | pkt_dev->max_pkt_size = value; | |
918 | pkt_dev->cur_pkt_size = value; | |
919 | } | |
920 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
921 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
922 | return count; |
923 | } | |
924 | ||
222f1806 | 925 | /* Shortcut for min = max */ |
1da177e4 LT |
926 | |
927 | if (!strcmp(name, "pkt_size")) { | |
928 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 929 | if (len < 0) |
222f1806 | 930 | return len; |
63adc6fb | 931 | |
1da177e4 | 932 | i += len; |
222f1806 LC |
933 | if (value < 14 + 20 + 8) |
934 | value = 14 + 20 + 8; | |
935 | if (value != pkt_dev->min_pkt_size) { | |
936 | pkt_dev->min_pkt_size = value; | |
937 | pkt_dev->max_pkt_size = value; | |
938 | pkt_dev->cur_pkt_size = value; | |
939 | } | |
1da177e4 LT |
940 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
941 | return count; | |
942 | } | |
943 | ||
222f1806 | 944 | if (!strcmp(name, "debug")) { |
1da177e4 | 945 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 946 | if (len < 0) |
222f1806 | 947 | return len; |
63adc6fb | 948 | |
1da177e4 | 949 | i += len; |
222f1806 | 950 | debug = value; |
1da177e4 LT |
951 | sprintf(pg_result, "OK: debug=%u", debug); |
952 | return count; | |
953 | } | |
954 | ||
222f1806 | 955 | if (!strcmp(name, "frags")) { |
1da177e4 | 956 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 957 | if (len < 0) |
222f1806 | 958 | return len; |
63adc6fb | 959 | |
1da177e4 LT |
960 | i += len; |
961 | pkt_dev->nfrags = value; | |
962 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
963 | return count; | |
964 | } | |
965 | if (!strcmp(name, "delay")) { | |
966 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 967 | if (len < 0) |
222f1806 | 968 | return len; |
63adc6fb | 969 | |
1da177e4 | 970 | i += len; |
fd29cf72 SH |
971 | if (value == 0x7FFFFFFF) |
972 | pkt_dev->delay = ULLONG_MAX; | |
973 | else | |
9240d715 | 974 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
975 | |
976 | sprintf(pg_result, "OK: delay=%llu", | |
977 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
978 | return count; |
979 | } | |
43d28b65 DT |
980 | if (!strcmp(name, "rate")) { |
981 | len = num_arg(&user_buffer[i], 10, &value); | |
982 | if (len < 0) | |
983 | return len; | |
984 | ||
985 | i += len; | |
986 | if (!value) | |
987 | return len; | |
988 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
989 | if (debug) | |
f9467eae | 990 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
991 | |
992 | sprintf(pg_result, "OK: rate=%lu", value); | |
993 | return count; | |
994 | } | |
995 | if (!strcmp(name, "ratep")) { | |
996 | len = num_arg(&user_buffer[i], 10, &value); | |
997 | if (len < 0) | |
998 | return len; | |
999 | ||
1000 | i += len; | |
1001 | if (!value) | |
1002 | return len; | |
1003 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1004 | if (debug) | |
f9467eae | 1005 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1006 | |
1007 | sprintf(pg_result, "OK: rate=%lu", value); | |
1008 | return count; | |
1009 | } | |
222f1806 | 1010 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1011 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1012 | if (len < 0) |
222f1806 | 1013 | return len; |
63adc6fb | 1014 | |
1da177e4 | 1015 | i += len; |
222f1806 LC |
1016 | if (value != pkt_dev->udp_src_min) { |
1017 | pkt_dev->udp_src_min = value; | |
1018 | pkt_dev->cur_udp_src = value; | |
1019 | } | |
1da177e4 LT |
1020 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1021 | return count; | |
1022 | } | |
222f1806 | 1023 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1024 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1025 | if (len < 0) |
222f1806 | 1026 | return len; |
63adc6fb | 1027 | |
1da177e4 | 1028 | i += len; |
222f1806 LC |
1029 | if (value != pkt_dev->udp_dst_min) { |
1030 | pkt_dev->udp_dst_min = value; | |
1031 | pkt_dev->cur_udp_dst = value; | |
1032 | } | |
1da177e4 LT |
1033 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1034 | return count; | |
1035 | } | |
222f1806 | 1036 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1037 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1038 | if (len < 0) |
222f1806 | 1039 | return len; |
63adc6fb | 1040 | |
1da177e4 | 1041 | i += len; |
222f1806 LC |
1042 | if (value != pkt_dev->udp_src_max) { |
1043 | pkt_dev->udp_src_max = value; | |
1044 | pkt_dev->cur_udp_src = value; | |
1045 | } | |
1da177e4 LT |
1046 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1047 | return count; | |
1048 | } | |
222f1806 | 1049 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1050 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1051 | if (len < 0) |
222f1806 | 1052 | return len; |
63adc6fb | 1053 | |
1da177e4 | 1054 | i += len; |
222f1806 LC |
1055 | if (value != pkt_dev->udp_dst_max) { |
1056 | pkt_dev->udp_dst_max = value; | |
1057 | pkt_dev->cur_udp_dst = value; | |
1058 | } | |
1da177e4 LT |
1059 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1060 | return count; | |
1061 | } | |
1062 | if (!strcmp(name, "clone_skb")) { | |
1063 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1064 | if (len < 0) |
222f1806 | 1065 | return len; |
d8873315 NH |
1066 | if ((value > 0) && |
1067 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
1068 | return -ENOTSUPP; | |
1da177e4 | 1069 | i += len; |
222f1806 LC |
1070 | pkt_dev->clone_skb = value; |
1071 | ||
1da177e4 LT |
1072 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1073 | return count; | |
1074 | } | |
1075 | if (!strcmp(name, "count")) { | |
1076 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1077 | if (len < 0) |
222f1806 | 1078 | return len; |
63adc6fb | 1079 | |
1da177e4 LT |
1080 | i += len; |
1081 | pkt_dev->count = value; | |
1082 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1083 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1084 | return count; |
1085 | } | |
1086 | if (!strcmp(name, "src_mac_count")) { | |
1087 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1088 | if (len < 0) |
222f1806 | 1089 | return len; |
63adc6fb | 1090 | |
1da177e4 LT |
1091 | i += len; |
1092 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1093 | pkt_dev->src_mac_count = value; |
1094 | pkt_dev->cur_src_mac_offset = 0; | |
1095 | } | |
1096 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1097 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1098 | return count; |
1099 | } | |
1100 | if (!strcmp(name, "dst_mac_count")) { | |
1101 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1102 | if (len < 0) |
222f1806 | 1103 | return len; |
63adc6fb | 1104 | |
1da177e4 LT |
1105 | i += len; |
1106 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1107 | pkt_dev->dst_mac_count = value; |
1108 | pkt_dev->cur_dst_mac_offset = 0; | |
1109 | } | |
1110 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1111 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1112 | return count; |
1113 | } | |
e99b99b4 RO |
1114 | if (!strcmp(name, "node")) { |
1115 | len = num_arg(&user_buffer[i], 10, &value); | |
1116 | if (len < 0) | |
1117 | return len; | |
1118 | ||
1119 | i += len; | |
1120 | ||
1121 | if (node_possible(value)) { | |
1122 | pkt_dev->node = value; | |
1123 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1124 | if (pkt_dev->page) { |
1125 | put_page(pkt_dev->page); | |
1126 | pkt_dev->page = NULL; | |
1127 | } | |
e99b99b4 RO |
1128 | } |
1129 | else | |
1130 | sprintf(pg_result, "ERROR: node not possible"); | |
1131 | return count; | |
1132 | } | |
1da177e4 | 1133 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1134 | char f[32]; |
1135 | memset(f, 0, 32); | |
1da177e4 | 1136 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1137 | if (len < 0) |
222f1806 | 1138 | return len; |
63adc6fb | 1139 | |
1da177e4 LT |
1140 | if (copy_from_user(f, &user_buffer[i], len)) |
1141 | return -EFAULT; | |
1142 | i += len; | |
222f1806 LC |
1143 | if (strcmp(f, "IPSRC_RND") == 0) |
1144 | pkt_dev->flags |= F_IPSRC_RND; | |
1145 | ||
1146 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1147 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1148 | ||
1149 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1150 | pkt_dev->flags |= F_TXSIZE_RND; | |
1151 | ||
1152 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1153 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1154 | ||
1155 | else if (strcmp(f, "IPDST_RND") == 0) | |
1156 | pkt_dev->flags |= F_IPDST_RND; | |
1157 | ||
1158 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1159 | pkt_dev->flags &= ~F_IPDST_RND; | |
1160 | ||
1161 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1162 | pkt_dev->flags |= F_UDPSRC_RND; | |
1163 | ||
1164 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1165 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1166 | ||
1167 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1168 | pkt_dev->flags |= F_UDPDST_RND; | |
1169 | ||
1170 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1171 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1172 | ||
1173 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1174 | pkt_dev->flags |= F_MACSRC_RND; | |
1175 | ||
1176 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1177 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1178 | ||
1179 | else if (strcmp(f, "MACDST_RND") == 0) | |
1180 | pkt_dev->flags |= F_MACDST_RND; | |
1181 | ||
1182 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1183 | pkt_dev->flags &= ~F_MACDST_RND; | |
1184 | ||
ca6549af SW |
1185 | else if (strcmp(f, "MPLS_RND") == 0) |
1186 | pkt_dev->flags |= F_MPLS_RND; | |
1187 | ||
1188 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1189 | pkt_dev->flags &= ~F_MPLS_RND; | |
1190 | ||
34954ddc FF |
1191 | else if (strcmp(f, "VID_RND") == 0) |
1192 | pkt_dev->flags |= F_VID_RND; | |
1193 | ||
1194 | else if (strcmp(f, "!VID_RND") == 0) | |
1195 | pkt_dev->flags &= ~F_VID_RND; | |
1196 | ||
1197 | else if (strcmp(f, "SVID_RND") == 0) | |
1198 | pkt_dev->flags |= F_SVID_RND; | |
1199 | ||
1200 | else if (strcmp(f, "!SVID_RND") == 0) | |
1201 | pkt_dev->flags &= ~F_SVID_RND; | |
1202 | ||
007a531b JHS |
1203 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1204 | pkt_dev->flags |= F_FLOW_SEQ; | |
1205 | ||
45b270f8 RO |
1206 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1207 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1208 | ||
1209 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1210 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1211 | |
1212 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1213 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1214 | ||
1215 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1216 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1217 | #ifdef CONFIG_XFRM |
1218 | else if (strcmp(f, "IPSEC") == 0) | |
1219 | pkt_dev->flags |= F_IPSEC_ON; | |
1220 | #endif | |
1221 | ||
1ca7768c FF |
1222 | else if (strcmp(f, "!IPV6") == 0) |
1223 | pkt_dev->flags &= ~F_IPV6; | |
1224 | ||
e99b99b4 RO |
1225 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1226 | pkt_dev->flags |= F_NODE; | |
1227 | ||
1228 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1229 | pkt_dev->flags &= ~F_NODE; | |
1230 | ||
222f1806 LC |
1231 | else { |
1232 | sprintf(pg_result, | |
1233 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1234 | f, | |
1ca7768c | 1235 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1236 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1237 | return count; |
1238 | } | |
1da177e4 LT |
1239 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1240 | return count; | |
1241 | } | |
1242 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1243 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1244 | if (len < 0) |
222f1806 | 1245 | return len; |
1da177e4 | 1246 | |
222f1806 | 1247 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1248 | return -EFAULT; |
222f1806 LC |
1249 | buf[len] = 0; |
1250 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1251 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1252 | strncpy(pkt_dev->dst_min, buf, len); | |
1253 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1254 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1255 | } | |
1256 | if (debug) | |
f342cda7 | 1257 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1258 | i += len; |
1da177e4 LT |
1259 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1260 | return count; | |
1261 | } | |
1262 | if (!strcmp(name, "dst_max")) { | |
1263 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1264 | if (len < 0) |
222f1806 | 1265 | return len; |
63adc6fb | 1266 | |
1da177e4 | 1267 | |
222f1806 | 1268 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1269 | return -EFAULT; |
1270 | ||
222f1806 LC |
1271 | buf[len] = 0; |
1272 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1273 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1274 | strncpy(pkt_dev->dst_max, buf, len); | |
1275 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1276 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1277 | } | |
1278 | if (debug) | |
f342cda7 | 1279 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1280 | i += len; |
1281 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1282 | return count; | |
1283 | } | |
1284 | if (!strcmp(name, "dst6")) { | |
1285 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1286 | if (len < 0) |
1287 | return len; | |
1da177e4 LT |
1288 | |
1289 | pkt_dev->flags |= F_IPV6; | |
1290 | ||
222f1806 | 1291 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1292 | return -EFAULT; |
222f1806 | 1293 | buf[len] = 0; |
1da177e4 | 1294 | |
c468fb13 | 1295 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1296 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1297 | |
4e3fd7a0 | 1298 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1299 | |
222f1806 | 1300 | if (debug) |
f342cda7 | 1301 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1302 | |
222f1806 | 1303 | i += len; |
1da177e4 LT |
1304 | sprintf(pg_result, "OK: dst6=%s", buf); |
1305 | return count; | |
1306 | } | |
1307 | if (!strcmp(name, "dst6_min")) { | |
1308 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1309 | if (len < 0) |
1310 | return len; | |
1da177e4 LT |
1311 | |
1312 | pkt_dev->flags |= F_IPV6; | |
1313 | ||
222f1806 | 1314 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1315 | return -EFAULT; |
222f1806 | 1316 | buf[len] = 0; |
1da177e4 | 1317 | |
c468fb13 | 1318 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1319 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1320 | |
4e3fd7a0 | 1321 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1322 | if (debug) |
f342cda7 | 1323 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1324 | |
222f1806 | 1325 | i += len; |
1da177e4 LT |
1326 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1327 | return count; | |
1328 | } | |
1329 | if (!strcmp(name, "dst6_max")) { | |
1330 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1331 | if (len < 0) |
1332 | return len; | |
1da177e4 LT |
1333 | |
1334 | pkt_dev->flags |= F_IPV6; | |
1335 | ||
222f1806 | 1336 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1337 | return -EFAULT; |
222f1806 | 1338 | buf[len] = 0; |
1da177e4 | 1339 | |
c468fb13 | 1340 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1341 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1342 | |
222f1806 | 1343 | if (debug) |
f342cda7 | 1344 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1345 | |
222f1806 | 1346 | i += len; |
1da177e4 LT |
1347 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1348 | return count; | |
1349 | } | |
1350 | if (!strcmp(name, "src6")) { | |
1351 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1352 | if (len < 0) |
1353 | return len; | |
1da177e4 LT |
1354 | |
1355 | pkt_dev->flags |= F_IPV6; | |
1356 | ||
222f1806 | 1357 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1358 | return -EFAULT; |
222f1806 | 1359 | buf[len] = 0; |
1da177e4 | 1360 | |
c468fb13 | 1361 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1362 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1363 | |
4e3fd7a0 | 1364 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1365 | |
222f1806 | 1366 | if (debug) |
f342cda7 | 1367 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1368 | |
1369 | i += len; | |
1da177e4 LT |
1370 | sprintf(pg_result, "OK: src6=%s", buf); |
1371 | return count; | |
1372 | } | |
1373 | if (!strcmp(name, "src_min")) { | |
1374 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1375 | if (len < 0) |
222f1806 | 1376 | return len; |
63adc6fb | 1377 | |
222f1806 | 1378 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1379 | return -EFAULT; |
222f1806 LC |
1380 | buf[len] = 0; |
1381 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1382 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1383 | strncpy(pkt_dev->src_min, buf, len); | |
1384 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1385 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1386 | } | |
1387 | if (debug) | |
f342cda7 | 1388 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1389 | i += len; |
1390 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1391 | return count; | |
1392 | } | |
1393 | if (!strcmp(name, "src_max")) { | |
1394 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1395 | if (len < 0) |
222f1806 | 1396 | return len; |
63adc6fb | 1397 | |
222f1806 | 1398 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1399 | return -EFAULT; |
222f1806 LC |
1400 | buf[len] = 0; |
1401 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1402 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1403 | strncpy(pkt_dev->src_max, buf, len); | |
1404 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1405 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1406 | } | |
1407 | if (debug) | |
f342cda7 | 1408 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1409 | i += len; |
1410 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1411 | return count; | |
1412 | } | |
1413 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1414 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1415 | if (len < 0) |
222f1806 | 1416 | return len; |
63adc6fb | 1417 | |
1da177e4 | 1418 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1419 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1420 | return -EFAULT; |
1da177e4 | 1421 | |
4940fc88 AD |
1422 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1423 | return -EINVAL; | |
1da177e4 | 1424 | /* Set up Dest MAC */ |
4940fc88 | 1425 | memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1426 | |
4940fc88 | 1427 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1428 | return count; |
1429 | } | |
1430 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1431 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1432 | if (len < 0) |
222f1806 | 1433 | return len; |
63adc6fb | 1434 | |
1da177e4 | 1435 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1436 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1437 | return -EFAULT; |
1da177e4 | 1438 | |
4940fc88 AD |
1439 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1440 | return -EINVAL; | |
ce5d0b47 | 1441 | /* Set up Src MAC */ |
4940fc88 | 1442 | memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN); |
ce5d0b47 | 1443 | |
4940fc88 | 1444 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1445 | return count; |
1446 | } | |
1447 | ||
222f1806 LC |
1448 | if (!strcmp(name, "clear_counters")) { |
1449 | pktgen_clear_counters(pkt_dev); | |
1450 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1451 | return count; | |
1452 | } | |
1da177e4 LT |
1453 | |
1454 | if (!strcmp(name, "flows")) { | |
1455 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1456 | if (len < 0) |
222f1806 | 1457 | return len; |
63adc6fb | 1458 | |
1da177e4 LT |
1459 | i += len; |
1460 | if (value > MAX_CFLOWS) | |
1461 | value = MAX_CFLOWS; | |
1462 | ||
1463 | pkt_dev->cflows = value; | |
1464 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1465 | return count; | |
1466 | } | |
1467 | ||
1468 | if (!strcmp(name, "flowlen")) { | |
1469 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1470 | if (len < 0) |
222f1806 | 1471 | return len; |
63adc6fb | 1472 | |
1da177e4 LT |
1473 | i += len; |
1474 | pkt_dev->lflow = value; | |
1475 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1476 | return count; | |
1477 | } | |
222f1806 | 1478 | |
45b270f8 RO |
1479 | if (!strcmp(name, "queue_map_min")) { |
1480 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1481 | if (len < 0) |
45b270f8 | 1482 | return len; |
63adc6fb | 1483 | |
45b270f8 RO |
1484 | i += len; |
1485 | pkt_dev->queue_map_min = value; | |
1486 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1487 | return count; | |
1488 | } | |
1489 | ||
1490 | if (!strcmp(name, "queue_map_max")) { | |
1491 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1492 | if (len < 0) |
45b270f8 | 1493 | return len; |
63adc6fb | 1494 | |
45b270f8 RO |
1495 | i += len; |
1496 | pkt_dev->queue_map_max = value; | |
1497 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1498 | return count; | |
1499 | } | |
1500 | ||
ca6549af | 1501 | if (!strcmp(name, "mpls")) { |
95c96174 | 1502 | unsigned int n, cnt; |
cfcabdcc | 1503 | |
ca6549af | 1504 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1505 | if (len < 0) |
1506 | return len; | |
ca6549af | 1507 | i += len; |
cfcabdcc | 1508 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1509 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1510 | cnt += sprintf(pg_result + cnt, |
1511 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1512 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1513 | |
1514 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1515 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1516 | pkt_dev->svlan_id = 0xffff; | |
1517 | ||
1518 | if (debug) | |
f342cda7 | 1519 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1520 | } |
1521 | return count; | |
1522 | } | |
1523 | ||
1524 | if (!strcmp(name, "vlan_id")) { | |
1525 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1526 | if (len < 0) |
34954ddc | 1527 | return len; |
63adc6fb | 1528 | |
34954ddc FF |
1529 | i += len; |
1530 | if (value <= 4095) { | |
1531 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1532 | ||
1533 | if (debug) | |
f342cda7 | 1534 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1535 | |
1536 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1537 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1538 | |
1539 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1540 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1541 | } else { | |
1542 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1543 | pkt_dev->svlan_id = 0xffff; | |
1544 | ||
1545 | if (debug) | |
f342cda7 | 1546 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1547 | } |
1548 | return count; | |
1549 | } | |
1550 | ||
1551 | if (!strcmp(name, "vlan_p")) { | |
1552 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1553 | if (len < 0) |
34954ddc | 1554 | return len; |
63adc6fb | 1555 | |
34954ddc FF |
1556 | i += len; |
1557 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1558 | pkt_dev->vlan_p = value; | |
1559 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1560 | } else { | |
1561 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1562 | } | |
1563 | return count; | |
1564 | } | |
1565 | ||
1566 | if (!strcmp(name, "vlan_cfi")) { | |
1567 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1568 | if (len < 0) |
34954ddc | 1569 | return len; |
63adc6fb | 1570 | |
34954ddc FF |
1571 | i += len; |
1572 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1573 | pkt_dev->vlan_cfi = value; | |
1574 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1575 | } else { | |
1576 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1577 | } | |
1578 | return count; | |
1579 | } | |
1580 | ||
1581 | if (!strcmp(name, "svlan_id")) { | |
1582 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1583 | if (len < 0) |
34954ddc | 1584 | return len; |
63adc6fb | 1585 | |
34954ddc FF |
1586 | i += len; |
1587 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1588 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1589 | ||
1590 | if (debug) | |
f342cda7 | 1591 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1592 | |
1593 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1594 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1595 | |
1596 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1597 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1598 | } else { | |
1599 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1600 | pkt_dev->svlan_id = 0xffff; | |
1601 | ||
1602 | if (debug) | |
f342cda7 | 1603 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1604 | } |
1605 | return count; | |
1606 | } | |
1607 | ||
1608 | if (!strcmp(name, "svlan_p")) { | |
1609 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1610 | if (len < 0) |
34954ddc | 1611 | return len; |
63adc6fb | 1612 | |
34954ddc FF |
1613 | i += len; |
1614 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1615 | pkt_dev->svlan_p = value; | |
1616 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1617 | } else { | |
1618 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1619 | } | |
1620 | return count; | |
1621 | } | |
1622 | ||
1623 | if (!strcmp(name, "svlan_cfi")) { | |
1624 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1625 | if (len < 0) |
34954ddc | 1626 | return len; |
63adc6fb | 1627 | |
34954ddc FF |
1628 | i += len; |
1629 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1630 | pkt_dev->svlan_cfi = value; | |
1631 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1632 | } else { | |
1633 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1634 | } | |
ca6549af SW |
1635 | return count; |
1636 | } | |
1637 | ||
1ca7768c FF |
1638 | if (!strcmp(name, "tos")) { |
1639 | __u32 tmp_value = 0; | |
1640 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1641 | if (len < 0) |
1ca7768c | 1642 | return len; |
63adc6fb | 1643 | |
1ca7768c FF |
1644 | i += len; |
1645 | if (len == 2) { | |
1646 | pkt_dev->tos = tmp_value; | |
1647 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1648 | } else { | |
1649 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1650 | } | |
1651 | return count; | |
1652 | } | |
1653 | ||
1654 | if (!strcmp(name, "traffic_class")) { | |
1655 | __u32 tmp_value = 0; | |
1656 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1657 | if (len < 0) |
1ca7768c | 1658 | return len; |
63adc6fb | 1659 | |
1ca7768c FF |
1660 | i += len; |
1661 | if (len == 2) { | |
1662 | pkt_dev->traffic_class = tmp_value; | |
1663 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1664 | } else { | |
1665 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1666 | } | |
1667 | return count; | |
1668 | } | |
1669 | ||
9e50e3ac JF |
1670 | if (!strcmp(name, "skb_priority")) { |
1671 | len = num_arg(&user_buffer[i], 9, &value); | |
1672 | if (len < 0) | |
1673 | return len; | |
1674 | ||
1675 | i += len; | |
1676 | pkt_dev->skb_priority = value; | |
1677 | sprintf(pg_result, "OK: skb_priority=%i", | |
1678 | pkt_dev->skb_priority); | |
1679 | return count; | |
1680 | } | |
1681 | ||
1da177e4 LT |
1682 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1683 | return -EINVAL; | |
1684 | } | |
1685 | ||
d50a6b56 | 1686 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1687 | { |
d50a6b56 SH |
1688 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1689 | } | |
1da177e4 | 1690 | |
9a32144e | 1691 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1692 | .owner = THIS_MODULE, |
1693 | .open = pktgen_if_open, | |
1694 | .read = seq_read, | |
1695 | .llseek = seq_lseek, | |
1696 | .write = pktgen_if_write, | |
1697 | .release = single_release, | |
d50a6b56 | 1698 | }; |
1da177e4 | 1699 | |
d50a6b56 SH |
1700 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1701 | { | |
222f1806 | 1702 | struct pktgen_thread *t = seq->private; |
648fda74 | 1703 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1704 | |
1705 | BUG_ON(!t); | |
1da177e4 | 1706 | |
222f1806 | 1707 | seq_printf(seq, "Running: "); |
1da177e4 | 1708 | |
222f1806 | 1709 | if_lock(t); |
c26a8016 | 1710 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1711 | if (pkt_dev->running) |
593f63b0 | 1712 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1713 | |
222f1806 LC |
1714 | seq_printf(seq, "\nStopped: "); |
1715 | ||
c26a8016 | 1716 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1717 | if (!pkt_dev->running) |
593f63b0 | 1718 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1719 | |
1720 | if (t->result[0]) | |
d50a6b56 | 1721 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1722 | else |
d50a6b56 | 1723 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1724 | |
222f1806 | 1725 | if_unlock(t); |
1da177e4 | 1726 | |
d50a6b56 | 1727 | return 0; |
1da177e4 LT |
1728 | } |
1729 | ||
d50a6b56 | 1730 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1731 | const char __user * user_buffer, |
1732 | size_t count, loff_t * offset) | |
1da177e4 | 1733 | { |
8a994a71 | 1734 | struct seq_file *seq = file->private_data; |
222f1806 | 1735 | struct pktgen_thread *t = seq->private; |
d6182223 | 1736 | int i, max, len, ret; |
1da177e4 | 1737 | char name[40]; |
222f1806 | 1738 | char *pg_result; |
d50a6b56 | 1739 | |
1da177e4 | 1740 | if (count < 1) { |
222f1806 | 1741 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1742 | return -EINVAL; |
1743 | } | |
d50a6b56 | 1744 | |
d6182223 PG |
1745 | max = count; |
1746 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1747 | if (len < 0) |
d50a6b56 SH |
1748 | return len; |
1749 | ||
d6182223 | 1750 | i = len; |
d50a6b56 | 1751 | |
1da177e4 LT |
1752 | /* Read variable name */ |
1753 | ||
1754 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1755 | if (len < 0) |
d50a6b56 | 1756 | return len; |
222f1806 | 1757 | |
1da177e4 LT |
1758 | memset(name, 0, sizeof(name)); |
1759 | if (copy_from_user(name, &user_buffer[i], len)) | |
1760 | return -EFAULT; | |
1761 | i += len; | |
d50a6b56 | 1762 | |
222f1806 | 1763 | max = count - i; |
1da177e4 | 1764 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1765 | if (len < 0) |
d50a6b56 SH |
1766 | return len; |
1767 | ||
1da177e4 LT |
1768 | i += len; |
1769 | ||
d50a6b56 | 1770 | if (debug) |
f342cda7 | 1771 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1772 | |
222f1806 | 1773 | if (!t) { |
f9467eae | 1774 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1775 | ret = -EINVAL; |
1776 | goto out; | |
1777 | } | |
1778 | ||
1779 | pg_result = &(t->result[0]); | |
1780 | ||
222f1806 LC |
1781 | if (!strcmp(name, "add_device")) { |
1782 | char f[32]; | |
1783 | memset(f, 0, 32); | |
1da177e4 | 1784 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1785 | if (len < 0) { |
1786 | ret = len; | |
1da177e4 LT |
1787 | goto out; |
1788 | } | |
222f1806 | 1789 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1790 | return -EFAULT; |
1791 | i += len; | |
6146e6a4 | 1792 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1793 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1794 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1795 | if (!ret) { |
1796 | ret = count; | |
1797 | sprintf(pg_result, "OK: add_device=%s", f); | |
1798 | } else | |
1799 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1800 | goto out; |
1801 | } | |
1802 | ||
222f1806 | 1803 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1804 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1805 | t->control |= T_REMDEVALL; |
6146e6a4 | 1806 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1807 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1808 | ret = count; |
222f1806 | 1809 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1810 | goto out; |
1811 | } | |
1812 | ||
222f1806 | 1813 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1814 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1815 | ret = count; |
1da177e4 LT |
1816 | goto out; |
1817 | } | |
1818 | ||
1819 | ret = -EINVAL; | |
222f1806 | 1820 | out: |
1da177e4 LT |
1821 | return ret; |
1822 | } | |
1823 | ||
d50a6b56 | 1824 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1825 | { |
d50a6b56 | 1826 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1827 | } |
1828 | ||
9a32144e | 1829 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1830 | .owner = THIS_MODULE, |
1831 | .open = pktgen_thread_open, | |
1832 | .read = seq_read, | |
1833 | .llseek = seq_lseek, | |
1834 | .write = pktgen_thread_write, | |
1835 | .release = single_release, | |
d50a6b56 | 1836 | }; |
1da177e4 LT |
1837 | |
1838 | /* Think find or remove for NN */ | |
4e58a027 CW |
1839 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1840 | const char *ifname, int remove) | |
1da177e4 LT |
1841 | { |
1842 | struct pktgen_thread *t; | |
1843 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1844 | bool exact = (remove == FIND); |
1da177e4 | 1845 | |
4e58a027 | 1846 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1847 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1848 | if (pkt_dev) { |
222f1806 LC |
1849 | if (remove) { |
1850 | if_lock(t); | |
1851 | pkt_dev->removal_mark = 1; | |
1852 | t->control |= T_REMDEV; | |
1853 | if_unlock(t); | |
1854 | } | |
1da177e4 LT |
1855 | break; |
1856 | } | |
1da177e4 | 1857 | } |
222f1806 | 1858 | return pkt_dev; |
1da177e4 LT |
1859 | } |
1860 | ||
95ed63f7 AK |
1861 | /* |
1862 | * mark a device for removal | |
1863 | */ | |
4e58a027 | 1864 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1865 | { |
1866 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1867 | const int max_tries = 10, msec_per_try = 125; |
1868 | int i = 0; | |
95ed63f7 | 1869 | |
6146e6a4 | 1870 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1871 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1872 | |
222f1806 | 1873 | while (1) { |
95ed63f7 | 1874 | |
4e58a027 | 1875 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1876 | if (pkt_dev == NULL) |
1877 | break; /* success */ | |
95ed63f7 | 1878 | |
6146e6a4 | 1879 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1880 | pr_debug("%s: waiting for %s to disappear....\n", |
1881 | __func__, ifname); | |
95ed63f7 | 1882 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1883 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1884 | |
1885 | if (++i >= max_tries) { | |
f9467eae JP |
1886 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1887 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1888 | break; |
1889 | } | |
1890 | ||
1891 | } | |
1892 | ||
6146e6a4 | 1893 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1894 | } |
95ed63f7 | 1895 | |
4e58a027 | 1896 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
1897 | { |
1898 | struct pktgen_thread *t; | |
1899 | ||
4e58a027 | 1900 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
1901 | struct pktgen_dev *pkt_dev; |
1902 | ||
1903 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1904 | if (pkt_dev->odev != dev) | |
1905 | continue; | |
1906 | ||
4e58a027 | 1907 | remove_proc_entry(pkt_dev->entry->name, pn->proc_dir); |
39df232f | 1908 | |
2975315b | 1909 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 1910 | pn->proc_dir, |
2975315b AD |
1911 | &pktgen_if_fops, |
1912 | pkt_dev); | |
39df232f | 1913 | if (!pkt_dev->entry) |
f9467eae JP |
1914 | pr_err("can't move proc entry for '%s'\n", |
1915 | dev->name); | |
39df232f SH |
1916 | break; |
1917 | } | |
1918 | } | |
1da177e4 LT |
1919 | } |
1920 | ||
222f1806 LC |
1921 | static int pktgen_device_event(struct notifier_block *unused, |
1922 | unsigned long event, void *ptr) | |
1da177e4 | 1923 | { |
39df232f | 1924 | struct net_device *dev = ptr; |
4e58a027 | 1925 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 1926 | |
4e58a027 | 1927 | if (pn->pktgen_exiting) |
e9dc8653 EB |
1928 | return NOTIFY_DONE; |
1929 | ||
1da177e4 LT |
1930 | /* It is OK that we do not hold the group lock right now, |
1931 | * as we run under the RTNL lock. | |
1932 | */ | |
1933 | ||
1934 | switch (event) { | |
39df232f | 1935 | case NETDEV_CHANGENAME: |
4e58a027 | 1936 | pktgen_change_name(pn, dev); |
1da177e4 | 1937 | break; |
222f1806 | 1938 | |
1da177e4 | 1939 | case NETDEV_UNREGISTER: |
4e58a027 | 1940 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 1941 | break; |
3ff50b79 | 1942 | } |
1da177e4 LT |
1943 | |
1944 | return NOTIFY_DONE; | |
1945 | } | |
1946 | ||
4e58a027 CW |
1947 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
1948 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 1949 | const char *ifname) |
e6fce5b9 RO |
1950 | { |
1951 | char b[IFNAMSIZ+5]; | |
d6182223 | 1952 | int i; |
e6fce5b9 | 1953 | |
63adc6fb SH |
1954 | for (i = 0; ifname[i] != '@'; i++) { |
1955 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1956 | break; |
1957 | ||
1958 | b[i] = ifname[i]; | |
1959 | } | |
1960 | b[i] = 0; | |
1961 | ||
4e58a027 | 1962 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
1963 | } |
1964 | ||
1965 | ||
1da177e4 LT |
1966 | /* Associate pktgen_dev with a device. */ |
1967 | ||
4e58a027 CW |
1968 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
1969 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 1970 | { |
1da177e4 | 1971 | struct net_device *odev; |
39df232f | 1972 | int err; |
1da177e4 LT |
1973 | |
1974 | /* Clean old setups */ | |
1da177e4 LT |
1975 | if (pkt_dev->odev) { |
1976 | dev_put(pkt_dev->odev); | |
222f1806 LC |
1977 | pkt_dev->odev = NULL; |
1978 | } | |
1da177e4 | 1979 | |
4e58a027 | 1980 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 1981 | if (!odev) { |
f9467eae | 1982 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 1983 | return -ENODEV; |
1da177e4 | 1984 | } |
39df232f | 1985 | |
1da177e4 | 1986 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 1987 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
1988 | err = -EINVAL; |
1989 | } else if (!netif_running(odev)) { | |
f9467eae | 1990 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
1991 | err = -ENETDOWN; |
1992 | } else { | |
1993 | pkt_dev->odev = odev; | |
1994 | return 0; | |
1da177e4 | 1995 | } |
1da177e4 | 1996 | |
1da177e4 | 1997 | dev_put(odev); |
39df232f | 1998 | return err; |
1da177e4 LT |
1999 | } |
2000 | ||
2001 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2002 | * structure to have the right information to create/send packets | |
2003 | */ | |
2004 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2005 | { | |
64c00d81 AG |
2006 | int ntxq; |
2007 | ||
222f1806 | 2008 | if (!pkt_dev->odev) { |
f9467eae | 2009 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2010 | sprintf(pkt_dev->result, |
2011 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2012 | return; | |
2013 | } | |
2014 | ||
64c00d81 AG |
2015 | /* make sure that we don't pick a non-existing transmit queue */ |
2016 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2017 | |
64c00d81 | 2018 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2019 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2020 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2021 | pkt_dev->odevname); | |
26e29eed | 2022 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2023 | } |
88271660 | 2024 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2025 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2026 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2027 | pkt_dev->odevname); | |
26e29eed | 2028 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2029 | } |
2030 | ||
222f1806 | 2031 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2032 | |
f404e9a6 | 2033 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2034 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2035 | |
222f1806 | 2036 | /* Set up Dest MAC */ |
f404e9a6 | 2037 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2038 | |
222f1806 | 2039 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2040 | int i, set = 0, err = 1; |
2041 | struct inet6_dev *idev; | |
2042 | ||
68bf9f0b AW |
2043 | if (pkt_dev->min_pkt_size == 0) { |
2044 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2045 | + sizeof(struct udphdr) | |
2046 | + sizeof(struct pktgen_hdr) | |
2047 | + pkt_dev->pkt_overhead; | |
2048 | } | |
2049 | ||
222f1806 LC |
2050 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2051 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2052 | set = 1; |
2053 | break; | |
2054 | } | |
2055 | ||
222f1806 LC |
2056 | if (!set) { |
2057 | ||
1da177e4 LT |
2058 | /* |
2059 | * Use linklevel address if unconfigured. | |
2060 | * | |
2061 | * use ipv6_get_lladdr if/when it's get exported | |
2062 | */ | |
2063 | ||
8814c4b5 | 2064 | rcu_read_lock(); |
63adc6fb SH |
2065 | idev = __in6_dev_get(pkt_dev->odev); |
2066 | if (idev) { | |
1da177e4 LT |
2067 | struct inet6_ifaddr *ifp; |
2068 | ||
2069 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2070 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2071 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2072 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2073 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2074 | err = 0; |
2075 | break; | |
2076 | } | |
2077 | } | |
2078 | read_unlock_bh(&idev->lock); | |
2079 | } | |
8814c4b5 | 2080 | rcu_read_unlock(); |
222f1806 | 2081 | if (err) |
f9467eae | 2082 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2083 | } |
222f1806 | 2084 | } else { |
68bf9f0b AW |
2085 | if (pkt_dev->min_pkt_size == 0) { |
2086 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2087 | + sizeof(struct udphdr) | |
2088 | + sizeof(struct pktgen_hdr) | |
2089 | + pkt_dev->pkt_overhead; | |
2090 | } | |
2091 | ||
1da177e4 LT |
2092 | pkt_dev->saddr_min = 0; |
2093 | pkt_dev->saddr_max = 0; | |
2094 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2095 | |
2096 | struct in_device *in_dev; | |
1da177e4 LT |
2097 | |
2098 | rcu_read_lock(); | |
e5ed6399 | 2099 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2100 | if (in_dev) { |
2101 | if (in_dev->ifa_list) { | |
222f1806 LC |
2102 | pkt_dev->saddr_min = |
2103 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2104 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2105 | } | |
1da177e4 LT |
2106 | } |
2107 | rcu_read_unlock(); | |
222f1806 | 2108 | } else { |
1da177e4 LT |
2109 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2110 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2111 | } | |
2112 | ||
2113 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2114 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2115 | } | |
222f1806 | 2116 | /* Initialize current values. */ |
68bf9f0b AW |
2117 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2118 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2119 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2120 | ||
222f1806 LC |
2121 | pkt_dev->cur_dst_mac_offset = 0; |
2122 | pkt_dev->cur_src_mac_offset = 0; | |
2123 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2124 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2125 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2126 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2127 | pkt_dev->nflows = 0; |
2128 | } | |
2129 | ||
fd29cf72 SH |
2130 | |
2131 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2132 | { | |
ef87979c | 2133 | ktime_t start_time, end_time; |
417bc4b8 | 2134 | s64 remaining; |
2bc481cf SH |
2135 | struct hrtimer_sleeper t; |
2136 | ||
2137 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2138 | hrtimer_set_expires(&t.timer, spin_until); | |
2139 | ||
43d28b65 | 2140 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2141 | if (remaining <= 0) { |
2142 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2143 | return; |
417bc4b8 | 2144 | } |
2bc481cf | 2145 | |
398f382c | 2146 | start_time = ktime_get(); |
33136d12 ED |
2147 | if (remaining < 100000) { |
2148 | /* for small delays (<100us), just loop until limit is reached */ | |
2149 | do { | |
398f382c DB |
2150 | end_time = ktime_get(); |
2151 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2152 | } else { |
2bc481cf SH |
2153 | /* see do_nanosleep */ |
2154 | hrtimer_init_sleeper(&t, current); | |
2155 | do { | |
2156 | set_current_state(TASK_INTERRUPTIBLE); | |
2157 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2158 | if (!hrtimer_active(&t.timer)) | |
2159 | t.task = NULL; | |
2160 | ||
2161 | if (likely(t.task)) | |
1da177e4 | 2162 | schedule(); |
1da177e4 | 2163 | |
2bc481cf SH |
2164 | hrtimer_cancel(&t.timer); |
2165 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2166 | __set_current_state(TASK_RUNNING); | |
398f382c | 2167 | end_time = ktime_get(); |
1da177e4 | 2168 | } |
ef87979c SH |
2169 | |
2170 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2171 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2172 | } |
2173 | ||
16dab72f JHS |
2174 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2175 | { | |
a553e4a6 | 2176 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2177 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2178 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2179 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2180 | } | |
2181 | ||
648fda74 | 2182 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2183 | { |
648fda74 | 2184 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2185 | } |
2186 | ||
2187 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2188 | { | |
2189 | int flow = pkt_dev->curfl; | |
2190 | ||
2191 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2192 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2193 | /* reset time */ | |
2194 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2195 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2196 | pkt_dev->curfl += 1; |
2197 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2198 | pkt_dev->curfl = 0; /*reset */ | |
2199 | } | |
2200 | } else { | |
33d7c5e5 | 2201 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2202 | pkt_dev->curfl = flow; |
007a531b | 2203 | |
1211a645 | 2204 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2205 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2206 | pkt_dev->flows[flow].flags = 0; |
2207 | } | |
007a531b JHS |
2208 | } |
2209 | ||
2210 | return pkt_dev->curfl; | |
2211 | } | |
2212 | ||
a553e4a6 JHS |
2213 | |
2214 | #ifdef CONFIG_XFRM | |
2215 | /* If there was already an IPSEC SA, we keep it as is, else | |
2216 | * we go look for it ... | |
2217 | */ | |
bd55775c | 2218 | #define DUMMY_MARK 0 |
fea1ab0f | 2219 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2220 | { |
2221 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2222 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 JHS |
2223 | if (!x) { |
2224 | /*slow path: we dont already have xfrm_state*/ | |
4e58a027 | 2225 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, |
5447c5e4 | 2226 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2227 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2228 | AF_INET, | |
2229 | pkt_dev->ipsmode, | |
2230 | pkt_dev->ipsproto, 0); | |
2231 | if (x) { | |
2232 | pkt_dev->flows[flow].x = x; | |
2233 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2234 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2235 | } |
2236 | ||
2237 | } | |
2238 | } | |
2239 | #endif | |
fd2ea0a7 DM |
2240 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2241 | { | |
e6fce5b9 RO |
2242 | |
2243 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2244 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2245 | ||
896a7cf8 | 2246 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2247 | __u16 t; |
2248 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2249 | t = prandom_u32() % |
fd2ea0a7 DM |
2250 | (pkt_dev->queue_map_max - |
2251 | pkt_dev->queue_map_min + 1) | |
2252 | + pkt_dev->queue_map_min; | |
2253 | } else { | |
2254 | t = pkt_dev->cur_queue_map + 1; | |
2255 | if (t > pkt_dev->queue_map_max) | |
2256 | t = pkt_dev->queue_map_min; | |
2257 | } | |
2258 | pkt_dev->cur_queue_map = t; | |
2259 | } | |
bfdbc0ac | 2260 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2261 | } |
2262 | ||
1da177e4 LT |
2263 | /* Increment/randomize headers according to flags and current values |
2264 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2265 | */ | |
222f1806 LC |
2266 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2267 | { | |
2268 | __u32 imn; | |
2269 | __u32 imx; | |
2270 | int flow = 0; | |
1da177e4 | 2271 | |
007a531b JHS |
2272 | if (pkt_dev->cflows) |
2273 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2274 | |
2275 | /* Deal with source MAC */ | |
222f1806 LC |
2276 | if (pkt_dev->src_mac_count > 1) { |
2277 | __u32 mc; | |
2278 | __u32 tmp; | |
2279 | ||
2280 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2281 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2282 | else { |
2283 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2284 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2285 | pkt_dev->src_mac_count) |
2286 | pkt_dev->cur_src_mac_offset = 0; | |
2287 | } | |
2288 | ||
2289 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2290 | pkt_dev->hh[11] = tmp; | |
2291 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2292 | pkt_dev->hh[10] = tmp; | |
2293 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2294 | pkt_dev->hh[9] = tmp; | |
2295 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2296 | pkt_dev->hh[8] = tmp; | |
2297 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2298 | pkt_dev->hh[7] = tmp; | |
2299 | } | |
2300 | ||
2301 | /* Deal with Destination MAC */ | |
2302 | if (pkt_dev->dst_mac_count > 1) { | |
2303 | __u32 mc; | |
2304 | __u32 tmp; | |
2305 | ||
2306 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2307 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2308 | |
2309 | else { | |
2310 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2311 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2312 | pkt_dev->dst_mac_count) { |
2313 | pkt_dev->cur_dst_mac_offset = 0; | |
2314 | } | |
2315 | } | |
2316 | ||
2317 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2318 | pkt_dev->hh[5] = tmp; | |
2319 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2320 | pkt_dev->hh[4] = tmp; | |
2321 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2322 | pkt_dev->hh[3] = tmp; | |
2323 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2324 | pkt_dev->hh[2] = tmp; | |
2325 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2326 | pkt_dev->hh[1] = tmp; | |
2327 | } | |
2328 | ||
ca6549af | 2329 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2330 | unsigned int i; |
e71a4783 | 2331 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2332 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2333 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2334 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2335 | htonl(0x000fffff)); |
2336 | } | |
2337 | ||
34954ddc | 2338 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2339 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2340 | } |
2341 | ||
2342 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2343 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2344 | } |
2345 | ||
222f1806 LC |
2346 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2347 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2348 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2349 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2350 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2351 | |
2352 | else { | |
1da177e4 LT |
2353 | pkt_dev->cur_udp_src++; |
2354 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2355 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2356 | } |
2357 | } | |
2358 | ||
2359 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2360 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2361 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2362 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2363 | + pkt_dev->udp_dst_min; | |
222f1806 | 2364 | } else { |
1da177e4 | 2365 | pkt_dev->cur_udp_dst++; |
222f1806 | 2366 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2367 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2368 | } |
2369 | } | |
1da177e4 LT |
2370 | |
2371 | if (!(pkt_dev->flags & F_IPV6)) { | |
2372 | ||
63adc6fb SH |
2373 | imn = ntohl(pkt_dev->saddr_min); |
2374 | imx = ntohl(pkt_dev->saddr_max); | |
2375 | if (imn < imx) { | |
1da177e4 | 2376 | __u32 t; |
222f1806 | 2377 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2378 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2379 | else { |
2380 | t = ntohl(pkt_dev->cur_saddr); | |
2381 | t++; | |
63adc6fb | 2382 | if (t > imx) |
1da177e4 | 2383 | t = imn; |
63adc6fb | 2384 | |
1da177e4 LT |
2385 | } |
2386 | pkt_dev->cur_saddr = htonl(t); | |
2387 | } | |
222f1806 | 2388 | |
007a531b | 2389 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2390 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2391 | } else { | |
252e3346 AV |
2392 | imn = ntohl(pkt_dev->daddr_min); |
2393 | imx = ntohl(pkt_dev->daddr_max); | |
2394 | if (imn < imx) { | |
1da177e4 | 2395 | __u32 t; |
252e3346 | 2396 | __be32 s; |
1da177e4 LT |
2397 | if (pkt_dev->flags & F_IPDST_RND) { |
2398 | ||
70e3ba72 | 2399 | do { |
33d7c5e5 AM |
2400 | t = prandom_u32() % |
2401 | (imx - imn) + imn; | |
252e3346 | 2402 | s = htonl(t); |
70e3ba72 AM |
2403 | } while (ipv4_is_loopback(s) || |
2404 | ipv4_is_multicast(s) || | |
2405 | ipv4_is_lbcast(s) || | |
2406 | ipv4_is_zeronet(s) || | |
2407 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2408 | pkt_dev->cur_daddr = s; |
2409 | } else { | |
1da177e4 LT |
2410 | t = ntohl(pkt_dev->cur_daddr); |
2411 | t++; | |
2412 | if (t > imx) { | |
2413 | t = imn; | |
2414 | } | |
2415 | pkt_dev->cur_daddr = htonl(t); | |
2416 | } | |
2417 | } | |
222f1806 | 2418 | if (pkt_dev->cflows) { |
007a531b | 2419 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2420 | pkt_dev->flows[flow].cur_daddr = |
2421 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2422 | #ifdef CONFIG_XFRM |
2423 | if (pkt_dev->flags & F_IPSEC_ON) | |
2424 | get_ipsec_sa(pkt_dev, flow); | |
2425 | #endif | |
1da177e4 LT |
2426 | pkt_dev->nflows++; |
2427 | } | |
2428 | } | |
222f1806 LC |
2429 | } else { /* IPV6 * */ |
2430 | ||
06e30411 | 2431 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2432 | int i; |
2433 | ||
2434 | /* Only random destinations yet */ | |
2435 | ||
222f1806 | 2436 | for (i = 0; i < 4; i++) { |
1da177e4 | 2437 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2438 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2439 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2440 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2441 | } |
222f1806 | 2442 | } |
1da177e4 LT |
2443 | } |
2444 | ||
222f1806 LC |
2445 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2446 | __u32 t; | |
2447 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2448 | t = prandom_u32() % |
5fa6fc76 SH |
2449 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2450 | + pkt_dev->min_pkt_size; | |
222f1806 | 2451 | } else { |
1da177e4 | 2452 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2453 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2454 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2455 | } |
2456 | pkt_dev->cur_pkt_size = t; | |
2457 | } | |
1da177e4 | 2458 | |
fd2ea0a7 | 2459 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2460 | |
1da177e4 LT |
2461 | pkt_dev->flows[flow].count++; |
2462 | } | |
2463 | ||
a553e4a6 JHS |
2464 | |
2465 | #ifdef CONFIG_XFRM | |
2466 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2467 | { | |
2468 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2469 | int err = 0; | |
a553e4a6 JHS |
2470 | |
2471 | if (!x) | |
2472 | return 0; | |
2473 | /* XXX: we dont support tunnel mode for now until | |
2474 | * we resolve the dst issue */ | |
2475 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2476 | return 0; | |
2477 | ||
2478 | spin_lock(&x->lock); | |
a553e4a6 | 2479 | |
13996378 | 2480 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2481 | if (err) |
2482 | goto error; | |
2483 | err = x->type->output(x, skb); | |
2484 | if (err) | |
2485 | goto error; | |
2486 | ||
63adc6fb | 2487 | x->curlft.bytes += skb->len; |
a553e4a6 | 2488 | x->curlft.packets++; |
a553e4a6 JHS |
2489 | error: |
2490 | spin_unlock(&x->lock); | |
2491 | return err; | |
2492 | } | |
2493 | ||
475ac1e4 | 2494 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2495 | { |
2496 | if (pkt_dev->cflows) { | |
2497 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2498 | int i; |
2499 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2500 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2501 | if (x) { | |
2502 | xfrm_state_put(x); | |
2503 | pkt_dev->flows[i].x = NULL; | |
2504 | } | |
2505 | } | |
2506 | } | |
2507 | } | |
2508 | ||
475ac1e4 | 2509 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2510 | struct sk_buff *skb, __be16 protocol) |
2511 | { | |
2512 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2513 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2514 | int nhead = 0; | |
2515 | if (x) { | |
2516 | int ret; | |
2517 | __u8 *eth; | |
2518 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2519 | if (nhead > 0) { |
a553e4a6 JHS |
2520 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2521 | if (ret < 0) { | |
f9467eae JP |
2522 | pr_err("Error expanding ipsec packet %d\n", |
2523 | ret); | |
b4bb4ac8 | 2524 | goto err; |
a553e4a6 JHS |
2525 | } |
2526 | } | |
2527 | ||
2528 | /* ipsec is not expecting ll header */ | |
2529 | skb_pull(skb, ETH_HLEN); | |
2530 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2531 | if (ret) { | |
f9467eae | 2532 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2533 | goto err; |
a553e4a6 JHS |
2534 | } |
2535 | /* restore ll */ | |
2536 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2537 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2538 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2539 | } |
2540 | } | |
2541 | return 1; | |
b4bb4ac8 IJ |
2542 | err: |
2543 | kfree_skb(skb); | |
2544 | return 0; | |
a553e4a6 JHS |
2545 | } |
2546 | #endif | |
2547 | ||
ca6549af SW |
2548 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2549 | { | |
95c96174 | 2550 | unsigned int i; |
63adc6fb | 2551 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2552 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2553 | |
ca6549af SW |
2554 | mpls--; |
2555 | *mpls |= MPLS_STACK_BOTTOM; | |
2556 | } | |
2557 | ||
0f37c605 AV |
2558 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2559 | unsigned int prio) | |
2560 | { | |
2561 | return htons(id | (cfi << 12) | (prio << 13)); | |
2562 | } | |
2563 | ||
26ad7879 ED |
2564 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2565 | int datalen) | |
2566 | { | |
2567 | struct timeval timestamp; | |
2568 | struct pktgen_hdr *pgh; | |
2569 | ||
2570 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2571 | datalen -= sizeof(*pgh); | |
2572 | ||
2573 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2574 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2575 | } else { |
2576 | int frags = pkt_dev->nfrags; | |
2577 | int i, len; | |
7d36a991 | 2578 | int frag_len; |
26ad7879 ED |
2579 | |
2580 | ||
2581 | if (frags > MAX_SKB_FRAGS) | |
2582 | frags = MAX_SKB_FRAGS; | |
2583 | len = datalen - frags * PAGE_SIZE; | |
2584 | if (len > 0) { | |
2585 | memset(skb_put(skb, len), 0, len); | |
2586 | datalen = frags * PAGE_SIZE; | |
2587 | } | |
2588 | ||
2589 | i = 0; | |
7d36a991 | 2590 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2591 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2592 | while (datalen > 0) { |
2593 | if (unlikely(!pkt_dev->page)) { | |
2594 | int node = numa_node_id(); | |
2595 | ||
2596 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2597 | node = pkt_dev->node; | |
2598 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2599 | if (!pkt_dev->page) | |
2600 | break; | |
2601 | } | |
a0bec1cd | 2602 | get_page(pkt_dev->page); |
ea2ab693 | 2603 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2604 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2605 | /*last fragment, fill rest of data*/ |
2606 | if (i == (frags - 1)) | |
9e903e08 ED |
2607 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2608 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2609 | else |
9e903e08 ED |
2610 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2611 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2612 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2613 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2614 | i++; |
2615 | skb_shinfo(skb)->nr_frags = i; | |
2616 | } | |
26ad7879 ED |
2617 | } |
2618 | ||
2619 | /* Stamp the time, and sequence number, | |
2620 | * convert them to network byte order | |
2621 | */ | |
2622 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2623 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2624 | ||
2625 | do_gettimeofday(×tamp); | |
2626 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2627 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2628 | } | |
2629 | ||
222f1806 LC |
2630 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2631 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2632 | { |
2633 | struct sk_buff *skb = NULL; | |
2634 | __u8 *eth; | |
2635 | struct udphdr *udph; | |
2636 | int datalen, iplen; | |
2637 | struct iphdr *iph; | |
d5f1ce9a | 2638 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2639 | __be32 *mpls; |
34954ddc FF |
2640 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2641 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2642 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2643 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2644 | u16 queue_map; |
ca6549af SW |
2645 | |
2646 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2647 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2648 | |
34954ddc | 2649 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2650 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2651 | |
64053bee RO |
2652 | /* Update any of the values, used when we're incrementing various |
2653 | * fields. | |
2654 | */ | |
2655 | mod_cur_headers(pkt_dev); | |
eb589063 | 2656 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2657 | |
7ac5459e | 2658 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2659 | |
2660 | if (pkt_dev->flags & F_NODE) { | |
2661 | int node; | |
2662 | ||
2663 | if (pkt_dev->node >= 0) | |
2664 | node = pkt_dev->node; | |
2665 | else | |
2666 | node = numa_node_id(); | |
2667 | ||
2668 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2669 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2670 | if (likely(skb)) { | |
2671 | skb_reserve(skb, NET_SKB_PAD); | |
2672 | skb->dev = odev; | |
2673 | } | |
2674 | } | |
2675 | else | |
2676 | skb = __netdev_alloc_skb(odev, | |
2677 | pkt_dev->cur_pkt_size + 64 | |
2678 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2679 | ||
1da177e4 LT |
2680 | if (!skb) { |
2681 | sprintf(pkt_dev->result, "No memory"); | |
2682 | return NULL; | |
2683 | } | |
a8d764b9 | 2684 | prefetchw(skb->data); |
1da177e4 | 2685 | |
7ac5459e | 2686 | skb_reserve(skb, datalen); |
1da177e4 LT |
2687 | |
2688 | /* Reserve for ethernet and IP header */ | |
2689 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2690 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2691 | if (pkt_dev->nr_labels) | |
2692 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2693 | |
2694 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2695 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2696 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2697 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2698 | pkt_dev->svlan_cfi, | |
2699 | pkt_dev->svlan_p); | |
34954ddc | 2700 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2701 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2702 | } |
2703 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2704 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2705 | pkt_dev->vlan_cfi, | |
2706 | pkt_dev->vlan_p); | |
34954ddc | 2707 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2708 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2709 | } |
2710 | ||
27a884dc | 2711 | skb->network_header = skb->tail; |
b0e380b1 | 2712 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2713 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2714 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2715 | skb->priority = pkt_dev->skb_priority; |
2716 | ||
ddc7b8e3 ACM |
2717 | iph = ip_hdr(skb); |
2718 | udph = udp_hdr(skb); | |
1da177e4 | 2719 | |
1da177e4 | 2720 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2721 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2722 | |
ca6549af SW |
2723 | /* Eth + IPh + UDPh + mpls */ |
2724 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2725 | pkt_dev->pkt_overhead; |
6af773e7 | 2726 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2727 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2728 | |
1da177e4 LT |
2729 | udph->source = htons(pkt_dev->cur_udp_src); |
2730 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2731 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2732 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2733 | |
2734 | iph->ihl = 5; | |
2735 | iph->version = 4; | |
2736 | iph->ttl = 32; | |
1ca7768c | 2737 | iph->tos = pkt_dev->tos; |
222f1806 | 2738 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2739 | iph->saddr = pkt_dev->cur_saddr; |
2740 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2741 | iph->id = htons(pkt_dev->ip_id); |
2742 | pkt_dev->ip_id++; | |
1da177e4 LT |
2743 | iph->frag_off = 0; |
2744 | iplen = 20 + 8 + datalen; | |
2745 | iph->tot_len = htons(iplen); | |
2746 | iph->check = 0; | |
222f1806 | 2747 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2748 | skb->protocol = protocol; |
b0e380b1 | 2749 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2750 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2751 | skb->dev = odev; |
2752 | skb->pkt_type = PACKET_HOST; | |
26ad7879 | 2753 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
1da177e4 | 2754 | |
a553e4a6 JHS |
2755 | #ifdef CONFIG_XFRM |
2756 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2757 | return NULL; | |
2758 | #endif | |
2759 | ||
1da177e4 LT |
2760 | return skb; |
2761 | } | |
2762 | ||
222f1806 LC |
2763 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2764 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2765 | { |
2766 | struct sk_buff *skb = NULL; | |
2767 | __u8 *eth; | |
2768 | struct udphdr *udph; | |
2769 | int datalen; | |
2770 | struct ipv6hdr *iph; | |
d5f1ce9a | 2771 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2772 | __be32 *mpls; |
34954ddc FF |
2773 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2774 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2775 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2776 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2777 | u16 queue_map; |
ca6549af SW |
2778 | |
2779 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2780 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2781 | |
34954ddc | 2782 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2783 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2784 | |
64053bee RO |
2785 | /* Update any of the values, used when we're incrementing various |
2786 | * fields. | |
2787 | */ | |
2788 | mod_cur_headers(pkt_dev); | |
eb589063 | 2789 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2790 | |
e470757d SH |
2791 | skb = __netdev_alloc_skb(odev, |
2792 | pkt_dev->cur_pkt_size + 64 | |
2793 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
2794 | if (!skb) { |
2795 | sprintf(pkt_dev->result, "No memory"); | |
2796 | return NULL; | |
2797 | } | |
a8d764b9 | 2798 | prefetchw(skb->data); |
1da177e4 LT |
2799 | |
2800 | skb_reserve(skb, 16); | |
2801 | ||
2802 | /* Reserve for ethernet and IP header */ | |
2803 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2804 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2805 | if (pkt_dev->nr_labels) | |
2806 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2807 | |
2808 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2809 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2810 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2811 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2812 | pkt_dev->svlan_cfi, | |
2813 | pkt_dev->svlan_p); | |
34954ddc | 2814 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2815 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2816 | } |
2817 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2818 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2819 | pkt_dev->vlan_cfi, | |
2820 | pkt_dev->vlan_p); | |
34954ddc | 2821 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2822 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2823 | } |
2824 | ||
27a884dc | 2825 | skb->network_header = skb->tail; |
b0e380b1 | 2826 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 2827 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2828 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2829 | skb->priority = pkt_dev->skb_priority; |
ddc7b8e3 ACM |
2830 | iph = ipv6_hdr(skb); |
2831 | udph = udp_hdr(skb); | |
1da177e4 | 2832 | |
1da177e4 | 2833 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2834 | *(__be16 *) ð[12] = protocol; |
64053bee | 2835 | |
ca6549af SW |
2836 | /* Eth + IPh + UDPh + mpls */ |
2837 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2838 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2839 | pkt_dev->pkt_overhead; |
1da177e4 | 2840 | |
5aa8b572 | 2841 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 2842 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 2843 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
2844 | } |
2845 | ||
2846 | udph->source = htons(pkt_dev->cur_udp_src); | |
2847 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2848 | udph->len = htons(datalen + sizeof(struct udphdr)); |
2849 | udph->check = 0; /* No checksum */ | |
1da177e4 | 2850 | |
d5f1ce9a | 2851 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2852 | |
1ca7768c FF |
2853 | if (pkt_dev->traffic_class) { |
2854 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2855 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2856 | } |
2857 | ||
1da177e4 LT |
2858 | iph->hop_limit = 32; |
2859 | ||
2860 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
2861 | iph->nexthdr = IPPROTO_UDP; | |
2862 | ||
4e3fd7a0 AD |
2863 | iph->daddr = pkt_dev->cur_in6_daddr; |
2864 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 2865 | |
b0e380b1 | 2866 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2867 | pkt_dev->pkt_overhead); |
ca6549af | 2868 | skb->protocol = protocol; |
1da177e4 LT |
2869 | skb->dev = odev; |
2870 | skb->pkt_type = PACKET_HOST; | |
2871 | ||
26ad7879 | 2872 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
222f1806 | 2873 | |
1da177e4 LT |
2874 | return skb; |
2875 | } | |
2876 | ||
475ac1e4 SH |
2877 | static struct sk_buff *fill_packet(struct net_device *odev, |
2878 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 2879 | { |
222f1806 | 2880 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
2881 | return fill_packet_ipv6(odev, pkt_dev); |
2882 | else | |
2883 | return fill_packet_ipv4(odev, pkt_dev); | |
2884 | } | |
2885 | ||
222f1806 | 2886 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 2887 | { |
222f1806 LC |
2888 | pkt_dev->seq_num = 1; |
2889 | pkt_dev->idle_acc = 0; | |
1da177e4 | 2890 | pkt_dev->sofar = 0; |
222f1806 LC |
2891 | pkt_dev->tx_bytes = 0; |
2892 | pkt_dev->errors = 0; | |
1da177e4 LT |
2893 | } |
2894 | ||
2895 | /* Set up structure for sending pkts, clear counters */ | |
2896 | ||
2897 | static void pktgen_run(struct pktgen_thread *t) | |
2898 | { | |
c26a8016 | 2899 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
2900 | int started = 0; |
2901 | ||
f9467eae | 2902 | func_enter(); |
1da177e4 LT |
2903 | |
2904 | if_lock(t); | |
c26a8016 | 2905 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
2906 | |
2907 | /* | |
2908 | * setup odev and create initial packet. | |
2909 | */ | |
2910 | pktgen_setup_inject(pkt_dev); | |
2911 | ||
222f1806 | 2912 | if (pkt_dev->odev) { |
1da177e4 | 2913 | pktgen_clear_counters(pkt_dev); |
222f1806 | 2914 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 2915 | pkt_dev->skb = NULL; |
398f382c | 2916 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 2917 | |
16dab72f | 2918 | set_pkt_overhead(pkt_dev); |
222f1806 | 2919 | |
1da177e4 LT |
2920 | strcpy(pkt_dev->result, "Starting"); |
2921 | started++; | |
222f1806 | 2922 | } else |
1da177e4 LT |
2923 | strcpy(pkt_dev->result, "Error starting"); |
2924 | } | |
2925 | if_unlock(t); | |
222f1806 LC |
2926 | if (started) |
2927 | t->control &= ~(T_STOP); | |
1da177e4 LT |
2928 | } |
2929 | ||
4e58a027 | 2930 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 2931 | { |
cdcdbe0b | 2932 | struct pktgen_thread *t; |
1da177e4 | 2933 | |
f9467eae | 2934 | func_enter(); |
1da177e4 | 2935 | |
6146e6a4 | 2936 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 2937 | |
4e58a027 | 2938 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 2939 | t->control |= T_STOP; |
cdcdbe0b | 2940 | |
6146e6a4 | 2941 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
2942 | } |
2943 | ||
648fda74 | 2944 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 2945 | { |
648fda74 | 2946 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 2947 | |
c26a8016 | 2948 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
2949 | if (pkt_dev->running) |
2950 | return 1; | |
2951 | return 0; | |
1da177e4 LT |
2952 | } |
2953 | ||
222f1806 | 2954 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 2955 | { |
222f1806 | 2956 | if_lock(t); |
1da177e4 | 2957 | |
222f1806 | 2958 | while (thread_is_running(t)) { |
1da177e4 | 2959 | |
222f1806 | 2960 | if_unlock(t); |
1da177e4 | 2961 | |
222f1806 | 2962 | msleep_interruptible(100); |
1da177e4 | 2963 | |
222f1806 LC |
2964 | if (signal_pending(current)) |
2965 | goto signal; | |
2966 | if_lock(t); | |
2967 | } | |
2968 | if_unlock(t); | |
2969 | return 1; | |
2970 | signal: | |
2971 | return 0; | |
1da177e4 LT |
2972 | } |
2973 | ||
4e58a027 | 2974 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 2975 | { |
cdcdbe0b | 2976 | struct pktgen_thread *t; |
1da177e4 | 2977 | int sig = 1; |
222f1806 | 2978 | |
6146e6a4 | 2979 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 2980 | |
4e58a027 | 2981 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 2982 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
2983 | if (sig == 0) |
2984 | break; | |
1da177e4 | 2985 | } |
cdcdbe0b LC |
2986 | |
2987 | if (sig == 0) | |
4e58a027 | 2988 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 2989 | t->control |= (T_STOP); |
cdcdbe0b | 2990 | |
6146e6a4 | 2991 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
2992 | return sig; |
2993 | } | |
2994 | ||
4e58a027 | 2995 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 2996 | { |
cdcdbe0b | 2997 | struct pktgen_thread *t; |
1da177e4 | 2998 | |
f9467eae | 2999 | func_enter(); |
1da177e4 | 3000 | |
6146e6a4 | 3001 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3002 | |
4e58a027 | 3003 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3004 | t->control |= (T_RUN); |
cdcdbe0b | 3005 | |
6146e6a4 | 3006 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3007 | |
63adc6fb SH |
3008 | /* Propagate thread->control */ |
3009 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3010 | |
4e58a027 | 3011 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3012 | } |
3013 | ||
4e58a027 | 3014 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3015 | { |
3016 | struct pktgen_thread *t; | |
3017 | ||
f9467eae | 3018 | func_enter(); |
eb37b41c JB |
3019 | |
3020 | mutex_lock(&pktgen_thread_lock); | |
3021 | ||
4e58a027 | 3022 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3023 | t->control |= (T_REMDEVALL); |
3024 | ||
3025 | mutex_unlock(&pktgen_thread_lock); | |
3026 | ||
63adc6fb SH |
3027 | /* Propagate thread->control */ |
3028 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3029 | |
4e58a027 | 3030 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3031 | } |
3032 | ||
1da177e4 LT |
3033 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3034 | { | |
fd29cf72 | 3035 | __u64 bps, mbps, pps; |
222f1806 | 3036 | char *p = pkt_dev->result; |
fd29cf72 SH |
3037 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3038 | pkt_dev->started_at); | |
3039 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3040 | ||
03a14ab1 | 3041 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3042 | (unsigned long long)ktime_to_us(elapsed), |
3043 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3044 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3045 | (unsigned long long)pkt_dev->sofar, |
3046 | pkt_dev->cur_pkt_size, nr_frags); | |
3047 | ||
fd29cf72 SH |
3048 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3049 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3050 | |
3051 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3052 | ||
3053 | mbps = bps; | |
3054 | do_div(mbps, 1000000); | |
3055 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3056 | (unsigned long long)pps, | |
3057 | (unsigned long long)mbps, | |
3058 | (unsigned long long)bps, | |
3059 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3060 | } |
1da177e4 LT |
3061 | |
3062 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3063 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3064 | { |
222f1806 | 3065 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3066 | |
222f1806 | 3067 | if (!pkt_dev->running) { |
f9467eae JP |
3068 | pr_warning("interface: %s is already stopped\n", |
3069 | pkt_dev->odevname); | |
222f1806 LC |
3070 | return -EINVAL; |
3071 | } | |
1da177e4 | 3072 | |
3bda06a3 SH |
3073 | kfree_skb(pkt_dev->skb); |
3074 | pkt_dev->skb = NULL; | |
398f382c | 3075 | pkt_dev->stopped_at = ktime_get(); |
222f1806 | 3076 | pkt_dev->running = 0; |
1da177e4 | 3077 | |
95ed63f7 | 3078 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3079 | |
222f1806 | 3080 | return 0; |
1da177e4 LT |
3081 | } |
3082 | ||
222f1806 | 3083 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3084 | { |
c26a8016 | 3085 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3086 | |
1da177e4 LT |
3087 | if_lock(t); |
3088 | ||
c26a8016 LC |
3089 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3090 | if (!pkt_dev->running) | |
222f1806 LC |
3091 | continue; |
3092 | if (best == NULL) | |
c26a8016 | 3093 | best = pkt_dev; |
398f382c | 3094 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3095 | best = pkt_dev; |
1da177e4 LT |
3096 | } |
3097 | if_unlock(t); | |
222f1806 | 3098 | return best; |
1da177e4 LT |
3099 | } |
3100 | ||
222f1806 LC |
3101 | static void pktgen_stop(struct pktgen_thread *t) |
3102 | { | |
c26a8016 | 3103 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3104 | |
f9467eae | 3105 | func_enter(); |
1da177e4 | 3106 | |
222f1806 | 3107 | if_lock(t); |
1da177e4 | 3108 | |
c26a8016 LC |
3109 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3110 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3111 | } |
1da177e4 | 3112 | |
222f1806 | 3113 | if_unlock(t); |
1da177e4 LT |
3114 | } |
3115 | ||
95ed63f7 AK |
3116 | /* |
3117 | * one of our devices needs to be removed - find it | |
3118 | * and remove it | |
3119 | */ | |
3120 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3121 | { | |
c26a8016 LC |
3122 | struct list_head *q, *n; |
3123 | struct pktgen_dev *cur; | |
95ed63f7 | 3124 | |
f9467eae | 3125 | func_enter(); |
95ed63f7 AK |
3126 | |
3127 | if_lock(t); | |
3128 | ||
c26a8016 LC |
3129 | list_for_each_safe(q, n, &t->if_list) { |
3130 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3131 | |
222f1806 LC |
3132 | if (!cur->removal_mark) |
3133 | continue; | |
95ed63f7 | 3134 | |
86dc1ad2 | 3135 | kfree_skb(cur->skb); |
95ed63f7 AK |
3136 | cur->skb = NULL; |
3137 | ||
3138 | pktgen_remove_device(t, cur); | |
3139 | ||
3140 | break; | |
3141 | } | |
3142 | ||
3143 | if_unlock(t); | |
3144 | } | |
3145 | ||
222f1806 | 3146 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3147 | { |
c26a8016 LC |
3148 | struct list_head *q, *n; |
3149 | struct pktgen_dev *cur; | |
222f1806 | 3150 | |
f9467eae JP |
3151 | func_enter(); |
3152 | ||
222f1806 | 3153 | /* Remove all devices, free mem */ |
95ed63f7 | 3154 | |
222f1806 | 3155 | if_lock(t); |
1da177e4 | 3156 | |
c26a8016 LC |
3157 | list_for_each_safe(q, n, &t->if_list) { |
3158 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3159 | |
86dc1ad2 | 3160 | kfree_skb(cur->skb); |
95ed63f7 AK |
3161 | cur->skb = NULL; |
3162 | ||
1da177e4 LT |
3163 | pktgen_remove_device(t, cur); |
3164 | } | |
3165 | ||
222f1806 | 3166 | if_unlock(t); |
1da177e4 LT |
3167 | } |
3168 | ||
222f1806 | 3169 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3170 | { |
222f1806 | 3171 | /* Remove from the thread list */ |
4e58a027 | 3172 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3173 | } |
3174 | ||
ef87979c | 3175 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3176 | { |
398f382c | 3177 | ktime_t idle_start = ktime_get(); |
ef87979c | 3178 | schedule(); |
398f382c | 3179 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3180 | } |
3791decb | 3181 | |
ef87979c SH |
3182 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3183 | { | |
398f382c | 3184 | ktime_t idle_start = ktime_get(); |
3791decb | 3185 | |
ef87979c SH |
3186 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3187 | if (signal_pending(current)) | |
3188 | break; | |
3189 | ||
3190 | if (need_resched()) | |
3191 | pktgen_resched(pkt_dev); | |
3192 | else | |
3193 | cpu_relax(); | |
3194 | } | |
398f382c | 3195 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3196 | } |
3197 | ||
475ac1e4 | 3198 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3199 | { |
00829823 | 3200 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3201 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3202 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3203 | struct netdev_queue *txq; |
fd2ea0a7 | 3204 | u16 queue_map; |
1da177e4 LT |
3205 | int ret; |
3206 | ||
ef87979c SH |
3207 | /* If device is offline, then don't send */ |
3208 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3209 | pktgen_stop_device(pkt_dev); | |
3210 | return; | |
fd2ea0a7 DM |
3211 | } |
3212 | ||
ef87979c SH |
3213 | /* This is max DELAY, this has special meaning of |
3214 | * "never transmit" | |
3215 | */ | |
3216 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3217 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3218 | return; |
1da177e4 | 3219 | } |
222f1806 | 3220 | |
ef87979c | 3221 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3222 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3223 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3224 | /* build a new pkt */ | |
3225 | kfree_skb(pkt_dev->skb); | |
3226 | ||
3227 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3228 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3229 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3230 | schedule(); |
3231 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3232 | return; | |
1da177e4 | 3233 | } |
baac8564 | 3234 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3235 | pkt_dev->allocated_skbs++; |
3236 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3237 | } |
95ed63f7 | 3238 | |
ef87979c SH |
3239 | if (pkt_dev->delay && pkt_dev->last_ok) |
3240 | spin(pkt_dev, pkt_dev->next_tx); | |
3241 | ||
fd2ea0a7 DM |
3242 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3243 | txq = netdev_get_tx_queue(odev, queue_map); | |
3244 | ||
3245 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3246 | |
73466498 | 3247 | if (unlikely(netif_xmit_frozen_or_stopped(txq))) { |
ef87979c | 3248 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3249 | pkt_dev->last_ok = 0; |
3250 | goto unlock; | |
3251 | } | |
3252 | atomic_inc(&(pkt_dev->skb->users)); | |
3253 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3254 | |
3255 | switch (ret) { | |
3256 | case NETDEV_TX_OK: | |
3257 | txq_trans_update(txq); | |
3258 | pkt_dev->last_ok = 1; | |
3259 | pkt_dev->sofar++; | |
3260 | pkt_dev->seq_num++; | |
baac8564 | 3261 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3262 | break; |
f466dba1 JF |
3263 | case NET_XMIT_DROP: |
3264 | case NET_XMIT_CN: | |
3265 | case NET_XMIT_POLICED: | |
3266 | /* skb has been consumed */ | |
3267 | pkt_dev->errors++; | |
3268 | break; | |
ef87979c | 3269 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3270 | net_info_ratelimited("%s xmit error: %d\n", |
3271 | pkt_dev->odevname, ret); | |
ef87979c SH |
3272 | pkt_dev->errors++; |
3273 | /* fallthru */ | |
3274 | case NETDEV_TX_LOCKED: | |
3275 | case NETDEV_TX_BUSY: | |
3276 | /* Retry it next time */ | |
3277 | atomic_dec(&(pkt_dev->skb->users)); | |
3278 | pkt_dev->last_ok = 0; | |
222f1806 | 3279 | } |
0835acfe | 3280 | unlock: |
fd2ea0a7 | 3281 | __netif_tx_unlock_bh(txq); |
222f1806 | 3282 | |
1da177e4 LT |
3283 | /* If pkt_dev->count is zero, then run forever */ |
3284 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3285 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3286 | |
1da177e4 LT |
3287 | /* Done with this */ |
3288 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3289 | } |
222f1806 | 3290 | } |
1da177e4 | 3291 | |
4ec93edb | 3292 | /* |
1da177e4 LT |
3293 | * Main loop of the thread goes here |
3294 | */ | |
3295 | ||
ee74baa7 | 3296 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3297 | { |
3298 | DEFINE_WAIT(wait); | |
ee74baa7 | 3299 | struct pktgen_thread *t = arg; |
222f1806 | 3300 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3301 | int cpu = t->cpu; |
1da177e4 | 3302 | |
ee74baa7 | 3303 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3304 | |
3305 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3306 | complete(&t->start_done); |
1da177e4 | 3307 | |
f9467eae | 3308 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3309 | |
ee74baa7 | 3310 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3311 | |
83144186 RW |
3312 | set_freezable(); |
3313 | ||
ee74baa7 DM |
3314 | while (!kthread_should_stop()) { |
3315 | pkt_dev = next_to_run(t); | |
1da177e4 | 3316 | |
ef87979c | 3317 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3318 | if (t->net->pktgen_exiting) |
551eaff1 | 3319 | break; |
ef87979c SH |
3320 | wait_event_interruptible_timeout(t->queue, |
3321 | t->control != 0, | |
3322 | HZ/10); | |
1b3f720b | 3323 | try_to_freeze(); |
ef87979c | 3324 | continue; |
ee74baa7 | 3325 | } |
1da177e4 | 3326 | |
ee74baa7 | 3327 | __set_current_state(TASK_RUNNING); |
222f1806 | 3328 | |
ef87979c | 3329 | if (likely(pkt_dev)) { |
1da177e4 LT |
3330 | pktgen_xmit(pkt_dev); |
3331 | ||
ef87979c SH |
3332 | if (need_resched()) |
3333 | pktgen_resched(pkt_dev); | |
3334 | else | |
3335 | cpu_relax(); | |
3336 | } | |
3337 | ||
222f1806 | 3338 | if (t->control & T_STOP) { |
1da177e4 LT |
3339 | pktgen_stop(t); |
3340 | t->control &= ~(T_STOP); | |
3341 | } | |
3342 | ||
222f1806 | 3343 | if (t->control & T_RUN) { |
1da177e4 LT |
3344 | pktgen_run(t); |
3345 | t->control &= ~(T_RUN); | |
3346 | } | |
3347 | ||
222f1806 | 3348 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3349 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3350 | t->control &= ~(T_REMDEVALL); |
3351 | } | |
3352 | ||
222f1806 | 3353 | if (t->control & T_REMDEV) { |
95ed63f7 | 3354 | pktgen_rem_one_if(t); |
1da177e4 LT |
3355 | t->control &= ~(T_REMDEV); |
3356 | } | |
3357 | ||
09fe3ef4 AM |
3358 | try_to_freeze(); |
3359 | ||
ee74baa7 | 3360 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3361 | } |
1da177e4 | 3362 | |
f9467eae | 3363 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3364 | pktgen_stop(t); |
1da177e4 | 3365 | |
f9467eae | 3366 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3367 | pktgen_rem_all_ifs(t); |
1da177e4 | 3368 | |
f9467eae | 3369 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3370 | pktgen_rem_thread(t); |
cdcdbe0b | 3371 | |
551eaff1 ED |
3372 | /* Wait for kthread_stop */ |
3373 | while (!kthread_should_stop()) { | |
3374 | set_current_state(TASK_INTERRUPTIBLE); | |
3375 | schedule(); | |
3376 | } | |
3377 | __set_current_state(TASK_RUNNING); | |
3378 | ||
ee74baa7 | 3379 | return 0; |
1da177e4 LT |
3380 | } |
3381 | ||
222f1806 | 3382 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3383 | const char *ifname, bool exact) |
1da177e4 | 3384 | { |
c26a8016 | 3385 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3386 | size_t len = strlen(ifname); |
222f1806 | 3387 | |
3e984840 | 3388 | if_lock(t); |
c26a8016 | 3389 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3390 | if (strncmp(p->odevname, ifname, len) == 0) { |
3391 | if (p->odevname[len]) { | |
3392 | if (exact || p->odevname[len] != '@') | |
3393 | continue; | |
3394 | } | |
c26a8016 | 3395 | pkt_dev = p; |
222f1806 LC |
3396 | break; |
3397 | } | |
222f1806 LC |
3398 | |
3399 | if_unlock(t); | |
f9467eae | 3400 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3401 | return pkt_dev; |
1da177e4 LT |
3402 | } |
3403 | ||
4ec93edb YH |
3404 | /* |
3405 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3406 | */ |
3407 | ||
222f1806 LC |
3408 | static int add_dev_to_thread(struct pktgen_thread *t, |
3409 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3410 | { |
3411 | int rv = 0; | |
222f1806 LC |
3412 | |
3413 | if_lock(t); | |
3414 | ||
3415 | if (pkt_dev->pg_thread) { | |
f9467eae | 3416 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3417 | rv = -EBUSY; |
3418 | goto out; | |
3419 | } | |
c26a8016 LC |
3420 | |
3421 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3422 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3423 | pkt_dev->running = 0; |
3424 | ||
222f1806 LC |
3425 | out: |
3426 | if_unlock(t); | |
3427 | return rv; | |
1da177e4 LT |
3428 | } |
3429 | ||
3430 | /* Called under thread lock */ | |
3431 | ||
222f1806 | 3432 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3433 | { |
222f1806 | 3434 | struct pktgen_dev *pkt_dev; |
39df232f | 3435 | int err; |
3291b9db | 3436 | int node = cpu_to_node(t->cpu); |
222f1806 | 3437 | |
1da177e4 LT |
3438 | /* We don't allow a device to be on several threads */ |
3439 | ||
4e58a027 | 3440 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3441 | if (pkt_dev) { |
f9467eae | 3442 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3443 | return -EBUSY; |
3444 | } | |
d50a6b56 | 3445 | |
3291b9db | 3446 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3447 | if (!pkt_dev) |
3448 | return -ENOMEM; | |
3449 | ||
593f63b0 | 3450 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3451 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3452 | node); |
d50a6b56 SH |
3453 | if (pkt_dev->flows == NULL) { |
3454 | kfree(pkt_dev); | |
3455 | return -ENOMEM; | |
3456 | } | |
d50a6b56 | 3457 | |
95ed63f7 | 3458 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3459 | pkt_dev->nfrags = 0; |
fd29cf72 | 3460 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3461 | pkt_dev->count = pg_count_d; |
3462 | pkt_dev->sofar = 0; | |
222f1806 | 3463 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3464 | pkt_dev->udp_src_max = 9; |
3465 | pkt_dev->udp_dst_min = 9; | |
3466 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3467 | pkt_dev->vlan_p = 0; |
3468 | pkt_dev->vlan_cfi = 0; | |
3469 | pkt_dev->vlan_id = 0xffff; | |
3470 | pkt_dev->svlan_p = 0; | |
3471 | pkt_dev->svlan_cfi = 0; | |
3472 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3473 | pkt_dev->node = -1; |
34954ddc | 3474 | |
4e58a027 | 3475 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3476 | if (err) |
3477 | goto out1; | |
d8873315 NH |
3478 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3479 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3480 | |
4e58a027 | 3481 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3482 | &pktgen_if_fops, pkt_dev); |
39df232f | 3483 | if (!pkt_dev->entry) { |
f9467eae | 3484 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3485 | PG_PROC_DIR, ifname); |
39df232f SH |
3486 | err = -EINVAL; |
3487 | goto out2; | |
d50a6b56 | 3488 | } |
a553e4a6 JHS |
3489 | #ifdef CONFIG_XFRM |
3490 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3491 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3492 | #endif | |
d50a6b56 SH |
3493 | |
3494 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3495 | out2: |
3496 | dev_put(pkt_dev->odev); | |
3497 | out1: | |
a553e4a6 JHS |
3498 | #ifdef CONFIG_XFRM |
3499 | free_SAs(pkt_dev); | |
3500 | #endif | |
1d0ebfe7 | 3501 | vfree(pkt_dev->flows); |
39df232f SH |
3502 | kfree(pkt_dev); |
3503 | return err; | |
1da177e4 LT |
3504 | } |
3505 | ||
4e58a027 | 3506 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3507 | { |
cdcdbe0b | 3508 | struct pktgen_thread *t; |
d50a6b56 | 3509 | struct proc_dir_entry *pe; |
ee74baa7 | 3510 | struct task_struct *p; |
222f1806 | 3511 | |
3291b9db ED |
3512 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3513 | cpu_to_node(cpu)); | |
222f1806 | 3514 | if (!t) { |
f9467eae | 3515 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3516 | return -ENOMEM; |
3517 | } | |
3518 | ||
222f1806 | 3519 | spin_lock_init(&t->if_lock); |
1da177e4 | 3520 | t->cpu = cpu; |
222f1806 | 3521 | |
ee74baa7 DM |
3522 | INIT_LIST_HEAD(&t->if_list); |
3523 | ||
4e58a027 | 3524 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3525 | init_completion(&t->start_done); |
ee74baa7 | 3526 | |
94dcf29a ED |
3527 | p = kthread_create_on_node(pktgen_thread_worker, |
3528 | t, | |
3529 | cpu_to_node(cpu), | |
3530 | "kpktgend_%d", cpu); | |
ee74baa7 | 3531 | if (IS_ERR(p)) { |
f9467eae | 3532 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3533 | list_del(&t->th_list); |
3534 | kfree(t); | |
3535 | return PTR_ERR(p); | |
3536 | } | |
3537 | kthread_bind(p, cpu); | |
3538 | t->tsk = p; | |
3539 | ||
4e58a027 | 3540 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3541 | &pktgen_thread_fops, t); |
222f1806 | 3542 | if (!pe) { |
f9467eae | 3543 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3544 | PG_PROC_DIR, t->tsk->comm); |
3545 | kthread_stop(p); | |
3546 | list_del(&t->th_list); | |
222f1806 LC |
3547 | kfree(t); |
3548 | return -EINVAL; | |
3549 | } | |
d50a6b56 | 3550 | |
4e58a027 | 3551 | t->net = pn; |
ee74baa7 | 3552 | wake_up_process(p); |
d3ede327 | 3553 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3554 | |
3555 | return 0; | |
3556 | } | |
3557 | ||
4ec93edb YH |
3558 | /* |
3559 | * Removes a device from the thread if_list. | |
1da177e4 | 3560 | */ |
222f1806 LC |
3561 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3562 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3563 | { |
c26a8016 LC |
3564 | struct list_head *q, *n; |
3565 | struct pktgen_dev *p; | |
1da177e4 | 3566 | |
c26a8016 LC |
3567 | list_for_each_safe(q, n, &t->if_list) { |
3568 | p = list_entry(q, struct pktgen_dev, list); | |
3569 | if (p == pkt_dev) | |
3570 | list_del(&p->list); | |
1da177e4 LT |
3571 | } |
3572 | } | |
3573 | ||
222f1806 LC |
3574 | static int pktgen_remove_device(struct pktgen_thread *t, |
3575 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3576 | { |
4e58a027 | 3577 | struct pktgen_net *pn = t->net; |
1da177e4 | 3578 | |
f9467eae | 3579 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3580 | |
222f1806 | 3581 | if (pkt_dev->running) { |
f9467eae | 3582 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3583 | pktgen_stop_device(pkt_dev); |
3584 | } | |
3585 | ||
3586 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3587 | |
3588 | if (pkt_dev->odev) { | |
3589 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3590 | pkt_dev->odev = NULL; |
3591 | } | |
3592 | ||
1da177e4 LT |
3593 | /* And update the thread if_list */ |
3594 | ||
3595 | _rem_dev_from_if_list(t, pkt_dev); | |
3596 | ||
39df232f | 3597 | if (pkt_dev->entry) |
4e58a027 | 3598 | remove_proc_entry(pkt_dev->entry->name, pn->proc_dir); |
1da177e4 | 3599 | |
a553e4a6 JHS |
3600 | #ifdef CONFIG_XFRM |
3601 | free_SAs(pkt_dev); | |
3602 | #endif | |
1d0ebfe7 | 3603 | vfree(pkt_dev->flows); |
26ad7879 ED |
3604 | if (pkt_dev->page) |
3605 | put_page(pkt_dev->page); | |
1da177e4 | 3606 | kfree(pkt_dev); |
222f1806 | 3607 | return 0; |
1da177e4 LT |
3608 | } |
3609 | ||
4e58a027 | 3610 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3611 | { |
4e58a027 | 3612 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3613 | struct proc_dir_entry *pe; |
4e58a027 CW |
3614 | int cpu, ret = 0; |
3615 | ||
3616 | pn->net = net; | |
3617 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3618 | pn->pktgen_exiting = false; | |
3619 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3620 | if (!pn->proc_dir) { | |
3621 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3622 | return -ENODEV; |
4e58a027 CW |
3623 | } |
3624 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3625 | if (pe == NULL) { |
4e58a027 | 3626 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3627 | ret = -EINVAL; |
4e58a027 | 3628 | goto remove; |
222f1806 | 3629 | } |
1da177e4 | 3630 | |
670c02c2 | 3631 | for_each_online_cpu(cpu) { |
8024bb24 | 3632 | int err; |
1da177e4 | 3633 | |
4e58a027 | 3634 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3635 | if (err) |
4e58a027 | 3636 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3637 | cpu, err); |
222f1806 | 3638 | } |
8024bb24 | 3639 | |
4e58a027 CW |
3640 | if (list_empty(&pn->pktgen_threads)) { |
3641 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3642 | ret = -ENODEV; |
4e58a027 | 3643 | goto remove_entry; |
8024bb24 LC |
3644 | } |
3645 | ||
222f1806 | 3646 | return 0; |
ce14f894 | 3647 | |
4e58a027 CW |
3648 | remove_entry: |
3649 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3650 | remove: | |
ece31ffd | 3651 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3652 | return ret; |
1da177e4 LT |
3653 | } |
3654 | ||
4e58a027 | 3655 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3656 | { |
4e58a027 | 3657 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3658 | struct pktgen_thread *t; |
3659 | struct list_head *q, *n; | |
d4b11335 | 3660 | LIST_HEAD(list); |
1da177e4 | 3661 | |
222f1806 | 3662 | /* Stop all interfaces & threads */ |
4e58a027 | 3663 | pn->pktgen_exiting = true; |
1da177e4 | 3664 | |
c57b5468 | 3665 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3666 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3667 | mutex_unlock(&pktgen_thread_lock); |
3668 | ||
3669 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3670 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3671 | list_del(&t->th_list); |
ee74baa7 DM |
3672 | kthread_stop(t->tsk); |
3673 | kfree(t); | |
222f1806 | 3674 | } |
1da177e4 | 3675 | |
4e58a027 | 3676 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3677 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3678 | } |
3679 | ||
3680 | static struct pernet_operations pg_net_ops = { | |
3681 | .init = pg_net_init, | |
3682 | .exit = pg_net_exit, | |
3683 | .id = &pg_net_id, | |
3684 | .size = sizeof(struct pktgen_net), | |
3685 | }; | |
3686 | ||
3687 | static int __init pg_init(void) | |
3688 | { | |
3689 | int ret = 0; | |
1da177e4 | 3690 | |
4e58a027 CW |
3691 | pr_info("%s", version); |
3692 | ret = register_pernet_subsys(&pg_net_ops); | |
3693 | if (ret) | |
3694 | return ret; | |
3695 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3696 | if (ret) | |
3697 | unregister_pernet_subsys(&pg_net_ops); | |
3698 | ||
3699 | return ret; | |
3700 | } | |
3701 | ||
3702 | static void __exit pg_cleanup(void) | |
3703 | { | |
3704 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3705 | unregister_pernet_subsys(&pg_net_ops); | |
1da177e4 LT |
3706 | } |
3707 | ||
1da177e4 LT |
3708 | module_init(pg_init); |
3709 | module_exit(pg_cleanup); | |
3710 | ||
c3d2f52d | 3711 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3712 | MODULE_DESCRIPTION("Packet Generator tool"); |
3713 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3714 | MODULE_VERSION(VERSION); |
1da177e4 | 3715 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3716 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3717 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3718 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3719 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3720 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3721 | module_param(debug, int, 0); |
c3d2f52d | 3722 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |