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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
1da177e4 LT |
72 | * way. The if_lock should be possible to remove when add/rem_device is merged |
73 | * into this too. | |
74 | * | |
4ec93edb YH |
75 | * By design there should only be *one* "controlling" process. In practice |
76 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 77 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 78 | * For practical use this should be no problem. |
1da177e4 | 79 | * |
4ec93edb YH |
80 | * Note when adding devices to a specific CPU there good idea to also assign |
81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
82 | * --ro |
83 | * | |
4ec93edb | 84 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
85 | * memleak 030710- KJP |
86 | * | |
87 | * First "ranges" functionality for ipv6 030726 --ro | |
88 | * | |
89 | * Included flow support. 030802 ANK. | |
90 | * | |
91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 92 | * |
1da177e4 LT |
93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
95 | * | |
4ec93edb | 96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
97 | * <shemminger@osdl.org> 040923 |
98 | * | |
4ec93edb | 99 | * Randy Dunlap fixed u64 printk compiler waring |
1da177e4 LT |
100 | * |
101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
103 | * | |
4ec93edb | 104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
106 | * | |
4ec93edb | 107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 108 | * 050103 |
ca6549af SW |
109 | * |
110 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
111 | * | |
34954ddc FF |
112 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
113 | * | |
ce5d0b47 AR |
114 | * Fixed src_mac command to set source mac of packet to value specified in |
115 | * command by Adit Ranadive <adit.262@gmail.com> | |
116 | * | |
1da177e4 | 117 | */ |
f9467eae JP |
118 | |
119 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
120 | ||
1da177e4 LT |
121 | #include <linux/sys.h> |
122 | #include <linux/types.h> | |
123 | #include <linux/module.h> | |
124 | #include <linux/moduleparam.h> | |
125 | #include <linux/kernel.h> | |
222fa076 | 126 | #include <linux/mutex.h> |
1da177e4 LT |
127 | #include <linux/sched.h> |
128 | #include <linux/slab.h> | |
129 | #include <linux/vmalloc.h> | |
1da177e4 LT |
130 | #include <linux/unistd.h> |
131 | #include <linux/string.h> | |
132 | #include <linux/ptrace.h> | |
133 | #include <linux/errno.h> | |
134 | #include <linux/ioport.h> | |
135 | #include <linux/interrupt.h> | |
4fc268d2 | 136 | #include <linux/capability.h> |
2bc481cf | 137 | #include <linux/hrtimer.h> |
09fe3ef4 | 138 | #include <linux/freezer.h> |
1da177e4 LT |
139 | #include <linux/delay.h> |
140 | #include <linux/timer.h> | |
cdcdbe0b | 141 | #include <linux/list.h> |
1da177e4 LT |
142 | #include <linux/init.h> |
143 | #include <linux/skbuff.h> | |
144 | #include <linux/netdevice.h> | |
145 | #include <linux/inet.h> | |
146 | #include <linux/inetdevice.h> | |
147 | #include <linux/rtnetlink.h> | |
148 | #include <linux/if_arp.h> | |
34954ddc | 149 | #include <linux/if_vlan.h> |
1da177e4 LT |
150 | #include <linux/in.h> |
151 | #include <linux/ip.h> | |
152 | #include <linux/ipv6.h> | |
153 | #include <linux/udp.h> | |
154 | #include <linux/proc_fs.h> | |
d50a6b56 | 155 | #include <linux/seq_file.h> |
1da177e4 | 156 | #include <linux/wait.h> |
f404e9a6 | 157 | #include <linux/etherdevice.h> |
ee74baa7 | 158 | #include <linux/kthread.h> |
457c4cbc | 159 | #include <net/net_namespace.h> |
1da177e4 LT |
160 | #include <net/checksum.h> |
161 | #include <net/ipv6.h> | |
162 | #include <net/addrconf.h> | |
a553e4a6 JHS |
163 | #ifdef CONFIG_XFRM |
164 | #include <net/xfrm.h> | |
165 | #endif | |
1da177e4 LT |
166 | #include <asm/byteorder.h> |
167 | #include <linux/rcupdate.h> | |
1977f032 | 168 | #include <linux/bitops.h> |
63adc6fb SH |
169 | #include <linux/io.h> |
170 | #include <linux/timex.h> | |
171 | #include <linux/uaccess.h> | |
1da177e4 | 172 | #include <asm/dma.h> |
222f1806 | 173 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 174 | |
43d28b65 | 175 | #define VERSION "2.74" |
1da177e4 | 176 | #define IP_NAME_SZ 32 |
ca6549af | 177 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 178 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 179 | |
f9467eae JP |
180 | #define func_enter() pr_debug("entering %s\n", __func__); |
181 | ||
1da177e4 | 182 | /* Device flag bits */ |
222f1806 LC |
183 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
184 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
185 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
186 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
187 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
188 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
189 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
190 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 191 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
192 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
193 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 194 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 195 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 196 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 197 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 198 | #define F_NODE (1<<15) /* Node memory alloc*/ |
1da177e4 LT |
199 | |
200 | /* Thread control flag bits */ | |
6b80d6a6 SH |
201 | #define T_STOP (1<<0) /* Stop run */ |
202 | #define T_RUN (1<<1) /* Start run */ | |
203 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
204 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 205 | |
1da177e4 LT |
206 | /* If lock -- can be removed after some work */ |
207 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
208 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
209 | ||
210 | /* Used to help with determining the pkts on receive */ | |
211 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
212 | #define PG_PROC_DIR "pktgen" |
213 | #define PGCTRL "pgctrl" | |
63adc6fb | 214 | static struct proc_dir_entry *pg_proc_dir; |
1da177e4 LT |
215 | |
216 | #define MAX_CFLOWS 65536 | |
217 | ||
34954ddc FF |
218 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
219 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
220 | ||
222f1806 | 221 | struct flow_state { |
252e3346 | 222 | __be32 cur_daddr; |
222f1806 | 223 | int count; |
a553e4a6 JHS |
224 | #ifdef CONFIG_XFRM |
225 | struct xfrm_state *x; | |
226 | #endif | |
007a531b | 227 | __u32 flags; |
1da177e4 LT |
228 | }; |
229 | ||
007a531b JHS |
230 | /* flow flag bits */ |
231 | #define F_INIT (1<<0) /* flow has been initialized */ | |
232 | ||
1da177e4 | 233 | struct pktgen_dev { |
1da177e4 LT |
234 | /* |
235 | * Try to keep frequent/infrequent used vars. separated. | |
236 | */ | |
39df232f SH |
237 | struct proc_dir_entry *entry; /* proc file */ |
238 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 239 | struct list_head list; /* chaining in the thread's run-queue */ |
1da177e4 | 240 | |
63adc6fb | 241 | int running; /* if false, the test will stop */ |
1da177e4 | 242 | |
222f1806 LC |
243 | /* If min != max, then we will either do a linear iteration, or |
244 | * we will do a random selection from within the range. | |
245 | */ | |
246 | __u32 flags; | |
95ed63f7 AK |
247 | int removal_mark; /* non-zero => the device is marked for |
248 | * removal by worker thread */ | |
1da177e4 | 249 | |
222f1806 LC |
250 | int min_pkt_size; /* = ETH_ZLEN; */ |
251 | int max_pkt_size; /* = ETH_ZLEN; */ | |
16dab72f | 252 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 253 | int nfrags; |
fd29cf72 SH |
254 | u64 delay; /* nano-seconds */ |
255 | ||
222f1806 LC |
256 | __u64 count; /* Default No packets to send */ |
257 | __u64 sofar; /* How many pkts we've sent so far */ | |
258 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 259 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
260 | |
261 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
262 | |
263 | __u64 allocated_skbs; | |
264 | __u32 clone_count; | |
265 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
266 | * Or a failed transmit of some sort? |
267 | * This will keep sequence numbers in order | |
222f1806 | 268 | */ |
fd29cf72 SH |
269 | ktime_t next_tx; |
270 | ktime_t started_at; | |
271 | ktime_t stopped_at; | |
272 | u64 idle_acc; /* nano-seconds */ | |
273 | ||
222f1806 LC |
274 | __u32 seq_num; |
275 | ||
63adc6fb SH |
276 | int clone_skb; /* |
277 | * Use multiple SKBs during packet gen. | |
278 | * If this number is greater than 1, then | |
279 | * that many copies of the same packet will be | |
280 | * sent before a new packet is allocated. | |
281 | * If you want to send 1024 identical packets | |
282 | * before creating a new packet, | |
283 | * set clone_skb to 1024. | |
222f1806 LC |
284 | */ |
285 | ||
286 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
287 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
288 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
289 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
290 | ||
291 | struct in6_addr in6_saddr; | |
292 | struct in6_addr in6_daddr; | |
293 | struct in6_addr cur_in6_daddr; | |
294 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 295 | /* For ranges */ |
222f1806 LC |
296 | struct in6_addr min_in6_daddr; |
297 | struct in6_addr max_in6_daddr; | |
298 | struct in6_addr min_in6_saddr; | |
299 | struct in6_addr max_in6_saddr; | |
300 | ||
301 | /* If we're doing ranges, random or incremental, then this | |
302 | * defines the min/max for those ranges. | |
303 | */ | |
252e3346 AV |
304 | __be32 saddr_min; /* inclusive, source IP address */ |
305 | __be32 saddr_max; /* exclusive, source IP address */ | |
306 | __be32 daddr_min; /* inclusive, dest IP address */ | |
307 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
308 | |
309 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
310 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
311 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
312 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
313 | ||
1ca7768c | 314 | /* DSCP + ECN */ |
63adc6fb SH |
315 | __u8 tos; /* six MSB of (former) IPv4 TOS |
316 | are for dscp codepoint */ | |
317 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
318 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 319 | |
ca6549af SW |
320 | /* MPLS */ |
321 | unsigned nr_labels; /* Depth of stack, 0 = no MPLS */ | |
322 | __be32 labels[MAX_MPLS_LABELS]; | |
323 | ||
34954ddc FF |
324 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
325 | __u8 vlan_p; | |
326 | __u8 vlan_cfi; | |
327 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
328 | ||
329 | __u8 svlan_p; | |
330 | __u8 svlan_cfi; | |
331 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
332 | ||
222f1806 LC |
333 | __u32 src_mac_count; /* How many MACs to iterate through */ |
334 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
335 | ||
336 | unsigned char dst_mac[ETH_ALEN]; | |
337 | unsigned char src_mac[ETH_ALEN]; | |
338 | ||
339 | __u32 cur_dst_mac_offset; | |
340 | __u32 cur_src_mac_offset; | |
252e3346 AV |
341 | __be32 cur_saddr; |
342 | __be32 cur_daddr; | |
66ed1e5e | 343 | __u16 ip_id; |
222f1806 LC |
344 | __u16 cur_udp_dst; |
345 | __u16 cur_udp_src; | |
45b270f8 | 346 | __u16 cur_queue_map; |
222f1806 | 347 | __u32 cur_pkt_size; |
baac8564 | 348 | __u32 last_pkt_size; |
222f1806 LC |
349 | |
350 | __u8 hh[14]; | |
351 | /* = { | |
352 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
353 | ||
354 | We fill in SRC address later | |
355 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
356 | 0x08, 0x00 | |
357 | }; | |
358 | */ | |
359 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
360 | ||
63adc6fb | 361 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
362 | * are transmitting the same one multiple times |
363 | */ | |
63adc6fb SH |
364 | struct net_device *odev; /* The out-going device. |
365 | * Note that the device should have it's | |
366 | * pg_info pointer pointing back to this | |
367 | * device. | |
368 | * Set when the user specifies the out-going | |
369 | * device name (not when the inject is | |
370 | * started as it used to do.) | |
371 | */ | |
593f63b0 | 372 | char odevname[32]; |
1da177e4 | 373 | struct flow_state *flows; |
222f1806 LC |
374 | unsigned cflows; /* Concurrent flows (config) */ |
375 | unsigned lflow; /* Flow length (config) */ | |
376 | unsigned nflows; /* accumulated flows (stats) */ | |
007a531b | 377 | unsigned curfl; /* current sequenced flow (state)*/ |
45b270f8 RO |
378 | |
379 | u16 queue_map_min; | |
380 | u16 queue_map_max; | |
9e50e3ac | 381 | __u32 skb_priority; /* skb priority field */ |
e99b99b4 | 382 | int node; /* Memory node */ |
45b270f8 | 383 | |
a553e4a6 JHS |
384 | #ifdef CONFIG_XFRM |
385 | __u8 ipsmode; /* IPSEC mode (config) */ | |
386 | __u8 ipsproto; /* IPSEC type (config) */ | |
387 | #endif | |
39df232f | 388 | char result[512]; |
1da177e4 LT |
389 | }; |
390 | ||
391 | struct pktgen_hdr { | |
252e3346 AV |
392 | __be32 pgh_magic; |
393 | __be32 seq_num; | |
394 | __be32 tv_sec; | |
395 | __be32 tv_usec; | |
1da177e4 LT |
396 | }; |
397 | ||
551eaff1 ED |
398 | static bool pktgen_exiting __read_mostly; |
399 | ||
1da177e4 | 400 | struct pktgen_thread { |
63adc6fb | 401 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 402 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 403 | struct list_head th_list; |
ee74baa7 | 404 | struct task_struct *tsk; |
222f1806 | 405 | char result[512]; |
222f1806 | 406 | |
63adc6fb SH |
407 | /* Field for thread to receive "posted" events terminate, |
408 | stop ifs etc. */ | |
222f1806 LC |
409 | |
410 | u32 control; | |
1da177e4 LT |
411 | int cpu; |
412 | ||
222f1806 | 413 | wait_queue_head_t queue; |
d3ede327 | 414 | struct completion start_done; |
1da177e4 LT |
415 | }; |
416 | ||
417 | #define REMOVE 1 | |
418 | #define FIND 0 | |
419 | ||
fd29cf72 | 420 | static inline ktime_t ktime_now(void) |
1da177e4 | 421 | { |
fd29cf72 SH |
422 | struct timespec ts; |
423 | ktime_get_ts(&ts); | |
424 | ||
425 | return timespec_to_ktime(ts); | |
1da177e4 LT |
426 | } |
427 | ||
fd29cf72 SH |
428 | /* This works even if 32 bit because of careful byte order choice */ |
429 | static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2) | |
1da177e4 | 430 | { |
fd29cf72 | 431 | return cmp1.tv64 < cmp2.tv64; |
1da177e4 LT |
432 | } |
433 | ||
c3d2f52d | 434 | static const char version[] = |
f9467eae JP |
435 | "Packet Generator for packet performance testing. " |
436 | "Version: " VERSION "\n"; | |
1da177e4 | 437 | |
222f1806 LC |
438 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
439 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
440 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 441 | const char *ifname, bool exact); |
1da177e4 LT |
442 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
443 | static void pktgen_run_all_threads(void); | |
eb37b41c | 444 | static void pktgen_reset_all_threads(void); |
1da177e4 | 445 | static void pktgen_stop_all_threads_ifs(void); |
3bda06a3 | 446 | |
222f1806 | 447 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 448 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 449 | |
222f1806 LC |
450 | static unsigned int scan_ip6(const char *s, char ip[16]); |
451 | static unsigned int fmt_ip6(char *s, const char ip[16]); | |
1da177e4 LT |
452 | |
453 | /* Module parameters, defaults. */ | |
65c5b786 SH |
454 | static int pg_count_d __read_mostly = 1000; |
455 | static int pg_delay_d __read_mostly; | |
456 | static int pg_clone_skb_d __read_mostly; | |
457 | static int debug __read_mostly; | |
1da177e4 | 458 | |
222fa076 | 459 | static DEFINE_MUTEX(pktgen_thread_lock); |
cdcdbe0b | 460 | static LIST_HEAD(pktgen_threads); |
1da177e4 | 461 | |
1da177e4 LT |
462 | static struct notifier_block pktgen_notifier_block = { |
463 | .notifier_call = pktgen_device_event, | |
464 | }; | |
465 | ||
1da177e4 | 466 | /* |
4ec93edb | 467 | * /proc handling functions |
1da177e4 LT |
468 | * |
469 | */ | |
470 | ||
d50a6b56 | 471 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 472 | { |
c3d2f52d | 473 | seq_puts(seq, version); |
d50a6b56 | 474 | return 0; |
1da177e4 LT |
475 | } |
476 | ||
63adc6fb SH |
477 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
478 | size_t count, loff_t *ppos) | |
1da177e4 | 479 | { |
1da177e4 | 480 | int err = 0; |
d50a6b56 | 481 | char data[128]; |
1da177e4 | 482 | |
222f1806 LC |
483 | if (!capable(CAP_NET_ADMIN)) { |
484 | err = -EPERM; | |
1da177e4 | 485 | goto out; |
222f1806 | 486 | } |
1da177e4 | 487 | |
d50a6b56 SH |
488 | if (count > sizeof(data)) |
489 | count = sizeof(data); | |
1da177e4 | 490 | |
1da177e4 | 491 | if (copy_from_user(data, buf, count)) { |
b4099fab | 492 | err = -EFAULT; |
d50a6b56 | 493 | goto out; |
222f1806 LC |
494 | } |
495 | data[count - 1] = 0; /* Make string */ | |
1da177e4 | 496 | |
222f1806 | 497 | if (!strcmp(data, "stop")) |
1da177e4 LT |
498 | pktgen_stop_all_threads_ifs(); |
499 | ||
222f1806 | 500 | else if (!strcmp(data, "start")) |
1da177e4 LT |
501 | pktgen_run_all_threads(); |
502 | ||
eb37b41c JB |
503 | else if (!strcmp(data, "reset")) |
504 | pktgen_reset_all_threads(); | |
505 | ||
222f1806 | 506 | else |
f9467eae | 507 | pr_warning("Unknown command: %s\n", data); |
1da177e4 LT |
508 | |
509 | err = count; | |
510 | ||
222f1806 LC |
511 | out: |
512 | return err; | |
1da177e4 LT |
513 | } |
514 | ||
d50a6b56 SH |
515 | static int pgctrl_open(struct inode *inode, struct file *file) |
516 | { | |
517 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
518 | } | |
519 | ||
9a32144e | 520 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
521 | .owner = THIS_MODULE, |
522 | .open = pgctrl_open, | |
523 | .read = seq_read, | |
524 | .llseek = seq_lseek, | |
525 | .write = pgctrl_write, | |
526 | .release = single_release, | |
d50a6b56 SH |
527 | }; |
528 | ||
529 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 530 | { |
648fda74 | 531 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
532 | ktime_t stopped; |
533 | u64 idle; | |
222f1806 LC |
534 | |
535 | seq_printf(seq, | |
536 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
537 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
538 | pkt_dev->max_pkt_size); | |
539 | ||
540 | seq_printf(seq, | |
fd29cf72 SH |
541 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
542 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 543 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
544 | |
545 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
546 | pkt_dev->lflow); | |
547 | ||
45b270f8 RO |
548 | seq_printf(seq, |
549 | " queue_map_min: %u queue_map_max: %u\n", | |
550 | pkt_dev->queue_map_min, | |
551 | pkt_dev->queue_map_max); | |
552 | ||
9e50e3ac JF |
553 | if (pkt_dev->skb_priority) |
554 | seq_printf(seq, " skb_priority: %u\n", | |
555 | pkt_dev->skb_priority); | |
556 | ||
222f1806 LC |
557 | if (pkt_dev->flags & F_IPV6) { |
558 | char b1[128], b2[128], b3[128]; | |
559 | fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr); | |
560 | fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr); | |
561 | fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr); | |
562 | seq_printf(seq, | |
563 | " saddr: %s min_saddr: %s max_saddr: %s\n", b1, | |
564 | b2, b3); | |
565 | ||
566 | fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr); | |
567 | fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr); | |
568 | fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr); | |
569 | seq_printf(seq, | |
570 | " daddr: %s min_daddr: %s max_daddr: %s\n", b1, | |
571 | b2, b3); | |
572 | ||
63adc6fb SH |
573 | } else { |
574 | seq_printf(seq, | |
575 | " dst_min: %s dst_max: %s\n", | |
576 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 577 | seq_printf(seq, |
63adc6fb SH |
578 | " src_min: %s src_max: %s\n", |
579 | pkt_dev->src_min, pkt_dev->src_max); | |
580 | } | |
1da177e4 | 581 | |
222f1806 | 582 | seq_puts(seq, " src_mac: "); |
1da177e4 | 583 | |
e174961c JB |
584 | seq_printf(seq, "%pM ", |
585 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
586 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 LC |
587 | |
588 | seq_printf(seq, "dst_mac: "); | |
e174961c | 589 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
590 | |
591 | seq_printf(seq, | |
63adc6fb SH |
592 | " udp_src_min: %d udp_src_max: %d" |
593 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
594 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
595 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
596 | ||
597 | seq_printf(seq, | |
ca6549af | 598 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 599 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 600 | |
ca6549af SW |
601 | if (pkt_dev->nr_labels) { |
602 | unsigned i; | |
603 | seq_printf(seq, " mpls: "); | |
e71a4783 | 604 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
605 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
606 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
607 | } | |
608 | ||
63adc6fb | 609 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 610 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
611 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
612 | pkt_dev->vlan_cfi); | |
34954ddc | 613 | |
63adc6fb | 614 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 615 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
616 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
617 | pkt_dev->svlan_cfi); | |
34954ddc | 618 | |
63adc6fb | 619 | if (pkt_dev->tos) |
1ca7768c | 620 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 621 | |
63adc6fb | 622 | if (pkt_dev->traffic_class) |
1ca7768c | 623 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 624 | |
e99b99b4 RO |
625 | if (pkt_dev->node >= 0) |
626 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
627 | ||
ca6549af SW |
628 | seq_printf(seq, " Flags: "); |
629 | ||
222f1806 LC |
630 | if (pkt_dev->flags & F_IPV6) |
631 | seq_printf(seq, "IPV6 "); | |
1da177e4 | 632 | |
222f1806 LC |
633 | if (pkt_dev->flags & F_IPSRC_RND) |
634 | seq_printf(seq, "IPSRC_RND "); | |
1da177e4 | 635 | |
222f1806 LC |
636 | if (pkt_dev->flags & F_IPDST_RND) |
637 | seq_printf(seq, "IPDST_RND "); | |
1da177e4 | 638 | |
222f1806 LC |
639 | if (pkt_dev->flags & F_TXSIZE_RND) |
640 | seq_printf(seq, "TXSIZE_RND "); | |
1da177e4 | 641 | |
222f1806 LC |
642 | if (pkt_dev->flags & F_UDPSRC_RND) |
643 | seq_printf(seq, "UDPSRC_RND "); | |
1da177e4 | 644 | |
222f1806 LC |
645 | if (pkt_dev->flags & F_UDPDST_RND) |
646 | seq_printf(seq, "UDPDST_RND "); | |
1da177e4 | 647 | |
ca6549af SW |
648 | if (pkt_dev->flags & F_MPLS_RND) |
649 | seq_printf(seq, "MPLS_RND "); | |
650 | ||
45b270f8 RO |
651 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
652 | seq_printf(seq, "QUEUE_MAP_RND "); | |
653 | ||
e6fce5b9 RO |
654 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
655 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
656 | ||
007a531b JHS |
657 | if (pkt_dev->cflows) { |
658 | if (pkt_dev->flags & F_FLOW_SEQ) | |
659 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
660 | else | |
661 | seq_printf(seq, "FLOW_RND "); | |
662 | } | |
663 | ||
a553e4a6 JHS |
664 | #ifdef CONFIG_XFRM |
665 | if (pkt_dev->flags & F_IPSEC_ON) | |
666 | seq_printf(seq, "IPSEC "); | |
667 | #endif | |
668 | ||
222f1806 LC |
669 | if (pkt_dev->flags & F_MACSRC_RND) |
670 | seq_printf(seq, "MACSRC_RND "); | |
1da177e4 | 671 | |
222f1806 LC |
672 | if (pkt_dev->flags & F_MACDST_RND) |
673 | seq_printf(seq, "MACDST_RND "); | |
1da177e4 | 674 | |
34954ddc FF |
675 | if (pkt_dev->flags & F_VID_RND) |
676 | seq_printf(seq, "VID_RND "); | |
677 | ||
678 | if (pkt_dev->flags & F_SVID_RND) | |
679 | seq_printf(seq, "SVID_RND "); | |
680 | ||
e99b99b4 RO |
681 | if (pkt_dev->flags & F_NODE) |
682 | seq_printf(seq, "NODE_ALLOC "); | |
683 | ||
222f1806 LC |
684 | seq_puts(seq, "\n"); |
685 | ||
fd29cf72 SH |
686 | /* not really stopped, more like last-running-at */ |
687 | stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at; | |
688 | idle = pkt_dev->idle_acc; | |
689 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 690 | |
222f1806 | 691 | seq_printf(seq, |
fd29cf72 | 692 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 693 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
694 | (unsigned long long)pkt_dev->errors); |
695 | ||
696 | seq_printf(seq, | |
697 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
698 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
699 | (unsigned long long) ktime_to_us(stopped), | |
700 | (unsigned long long) idle); | |
1da177e4 | 701 | |
222f1806 LC |
702 | seq_printf(seq, |
703 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
704 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
705 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 706 | |
222f1806 | 707 | if (pkt_dev->flags & F_IPV6) { |
1da177e4 | 708 | char b1[128], b2[128]; |
222f1806 LC |
709 | fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr); |
710 | fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr); | |
711 | seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1); | |
712 | } else | |
713 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", | |
d50a6b56 | 714 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
1da177e4 | 715 | |
222f1806 | 716 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 717 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 718 | |
45b270f8 RO |
719 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
720 | ||
222f1806 | 721 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
722 | |
723 | if (pkt_dev->result[0]) | |
222f1806 | 724 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 725 | else |
222f1806 | 726 | seq_printf(seq, "Result: Idle\n"); |
1da177e4 | 727 | |
d50a6b56 | 728 | return 0; |
1da177e4 LT |
729 | } |
730 | ||
ca6549af | 731 | |
63adc6fb SH |
732 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
733 | __u32 *num) | |
ca6549af SW |
734 | { |
735 | int i = 0; | |
736 | *num = 0; | |
737 | ||
e71a4783 | 738 | for (; i < maxlen; i++) { |
82fd5b5d | 739 | int value; |
ca6549af SW |
740 | char c; |
741 | *num <<= 4; | |
742 | if (get_user(c, &user_buffer[i])) | |
743 | return -EFAULT; | |
82fd5b5d AS |
744 | value = hex_to_bin(c); |
745 | if (value >= 0) | |
746 | *num |= value; | |
ca6549af SW |
747 | else |
748 | break; | |
749 | } | |
750 | return i; | |
751 | } | |
752 | ||
222f1806 LC |
753 | static int count_trail_chars(const char __user * user_buffer, |
754 | unsigned int maxlen) | |
1da177e4 LT |
755 | { |
756 | int i; | |
757 | ||
758 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
759 | char c; |
760 | if (get_user(c, &user_buffer[i])) | |
761 | return -EFAULT; | |
762 | switch (c) { | |
1da177e4 LT |
763 | case '\"': |
764 | case '\n': | |
765 | case '\r': | |
766 | case '\t': | |
767 | case ' ': | |
768 | case '=': | |
769 | break; | |
770 | default: | |
771 | goto done; | |
3ff50b79 | 772 | } |
1da177e4 LT |
773 | } |
774 | done: | |
775 | return i; | |
776 | } | |
777 | ||
222f1806 LC |
778 | static unsigned long num_arg(const char __user * user_buffer, |
779 | unsigned long maxlen, unsigned long *num) | |
1da177e4 | 780 | { |
d6182223 | 781 | int i; |
1da177e4 | 782 | *num = 0; |
222f1806 | 783 | |
d6182223 | 784 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
785 | char c; |
786 | if (get_user(c, &user_buffer[i])) | |
787 | return -EFAULT; | |
788 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 789 | *num *= 10; |
222f1806 | 790 | *num += c - '0'; |
1da177e4 LT |
791 | } else |
792 | break; | |
793 | } | |
794 | return i; | |
795 | } | |
796 | ||
222f1806 | 797 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 798 | { |
d6182223 | 799 | int i; |
1da177e4 | 800 | |
d6182223 | 801 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
802 | char c; |
803 | if (get_user(c, &user_buffer[i])) | |
804 | return -EFAULT; | |
805 | switch (c) { | |
1da177e4 LT |
806 | case '\"': |
807 | case '\n': | |
808 | case '\r': | |
809 | case '\t': | |
810 | case ' ': | |
811 | goto done_str; | |
812 | break; | |
813 | default: | |
814 | break; | |
3ff50b79 | 815 | } |
1da177e4 LT |
816 | } |
817 | done_str: | |
1da177e4 LT |
818 | return i; |
819 | } | |
820 | ||
ca6549af SW |
821 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
822 | { | |
823 | unsigned n = 0; | |
824 | char c; | |
825 | ssize_t i = 0; | |
826 | int len; | |
827 | ||
828 | pkt_dev->nr_labels = 0; | |
829 | do { | |
830 | __u32 tmp; | |
1ca7768c | 831 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
832 | if (len <= 0) |
833 | return len; | |
834 | pkt_dev->labels[n] = htonl(tmp); | |
835 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
836 | pkt_dev->flags |= F_MPLS_RND; | |
837 | i += len; | |
838 | if (get_user(c, &buffer[i])) | |
839 | return -EFAULT; | |
840 | i++; | |
841 | n++; | |
842 | if (n >= MAX_MPLS_LABELS) | |
843 | return -E2BIG; | |
e71a4783 | 844 | } while (c == ','); |
ca6549af SW |
845 | |
846 | pkt_dev->nr_labels = n; | |
847 | return i; | |
848 | } | |
849 | ||
222f1806 LC |
850 | static ssize_t pktgen_if_write(struct file *file, |
851 | const char __user * user_buffer, size_t count, | |
852 | loff_t * offset) | |
1da177e4 | 853 | { |
8a994a71 | 854 | struct seq_file *seq = file->private_data; |
222f1806 | 855 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 856 | int i, max, len; |
1da177e4 LT |
857 | char name[16], valstr[32]; |
858 | unsigned long value = 0; | |
222f1806 LC |
859 | char *pg_result = NULL; |
860 | int tmp = 0; | |
1da177e4 | 861 | char buf[128]; |
222f1806 LC |
862 | |
863 | pg_result = &(pkt_dev->result[0]); | |
864 | ||
1da177e4 | 865 | if (count < 1) { |
f9467eae | 866 | pr_warning("wrong command format\n"); |
1da177e4 LT |
867 | return -EINVAL; |
868 | } | |
222f1806 | 869 | |
d6182223 PG |
870 | max = count; |
871 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 872 | if (tmp < 0) { |
f9467eae | 873 | pr_warning("illegal format\n"); |
222f1806 | 874 | return tmp; |
1da177e4 | 875 | } |
d6182223 | 876 | i = tmp; |
222f1806 | 877 | |
1da177e4 LT |
878 | /* Read variable name */ |
879 | ||
880 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 881 | if (len < 0) |
222f1806 | 882 | return len; |
63adc6fb | 883 | |
1da177e4 | 884 | memset(name, 0, sizeof(name)); |
222f1806 | 885 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
886 | return -EFAULT; |
887 | i += len; | |
222f1806 LC |
888 | |
889 | max = count - i; | |
1da177e4 | 890 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
891 | if (len < 0) |
892 | return len; | |
893 | ||
1da177e4 LT |
894 | i += len; |
895 | ||
896 | if (debug) { | |
86c2c0a8 | 897 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
898 | char tb[copy + 1]; |
899 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 900 | return -EFAULT; |
448d7b5d | 901 | tb[copy] = 0; |
25a8b254 | 902 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, |
222f1806 LC |
903 | (unsigned long)count, tb); |
904 | } | |
1da177e4 LT |
905 | |
906 | if (!strcmp(name, "min_pkt_size")) { | |
907 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 908 | if (len < 0) |
222f1806 | 909 | return len; |
63adc6fb | 910 | |
1da177e4 | 911 | i += len; |
222f1806 LC |
912 | if (value < 14 + 20 + 8) |
913 | value = 14 + 20 + 8; | |
914 | if (value != pkt_dev->min_pkt_size) { | |
915 | pkt_dev->min_pkt_size = value; | |
916 | pkt_dev->cur_pkt_size = value; | |
917 | } | |
918 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
919 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
920 | return count; |
921 | } | |
922 | ||
222f1806 | 923 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 924 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 925 | if (len < 0) |
222f1806 | 926 | return len; |
63adc6fb | 927 | |
1da177e4 | 928 | i += len; |
222f1806 LC |
929 | if (value < 14 + 20 + 8) |
930 | value = 14 + 20 + 8; | |
931 | if (value != pkt_dev->max_pkt_size) { | |
932 | pkt_dev->max_pkt_size = value; | |
933 | pkt_dev->cur_pkt_size = value; | |
934 | } | |
935 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
936 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
937 | return count; |
938 | } | |
939 | ||
222f1806 | 940 | /* Shortcut for min = max */ |
1da177e4 LT |
941 | |
942 | if (!strcmp(name, "pkt_size")) { | |
943 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 944 | if (len < 0) |
222f1806 | 945 | return len; |
63adc6fb | 946 | |
1da177e4 | 947 | i += len; |
222f1806 LC |
948 | if (value < 14 + 20 + 8) |
949 | value = 14 + 20 + 8; | |
950 | if (value != pkt_dev->min_pkt_size) { | |
951 | pkt_dev->min_pkt_size = value; | |
952 | pkt_dev->max_pkt_size = value; | |
953 | pkt_dev->cur_pkt_size = value; | |
954 | } | |
1da177e4 LT |
955 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
956 | return count; | |
957 | } | |
958 | ||
222f1806 | 959 | if (!strcmp(name, "debug")) { |
1da177e4 | 960 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 961 | if (len < 0) |
222f1806 | 962 | return len; |
63adc6fb | 963 | |
1da177e4 | 964 | i += len; |
222f1806 | 965 | debug = value; |
1da177e4 LT |
966 | sprintf(pg_result, "OK: debug=%u", debug); |
967 | return count; | |
968 | } | |
969 | ||
222f1806 | 970 | if (!strcmp(name, "frags")) { |
1da177e4 | 971 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 972 | if (len < 0) |
222f1806 | 973 | return len; |
63adc6fb | 974 | |
1da177e4 LT |
975 | i += len; |
976 | pkt_dev->nfrags = value; | |
977 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
978 | return count; | |
979 | } | |
980 | if (!strcmp(name, "delay")) { | |
981 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 982 | if (len < 0) |
222f1806 | 983 | return len; |
63adc6fb | 984 | |
1da177e4 | 985 | i += len; |
fd29cf72 SH |
986 | if (value == 0x7FFFFFFF) |
987 | pkt_dev->delay = ULLONG_MAX; | |
988 | else | |
9240d715 | 989 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
990 | |
991 | sprintf(pg_result, "OK: delay=%llu", | |
992 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
993 | return count; |
994 | } | |
43d28b65 DT |
995 | if (!strcmp(name, "rate")) { |
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 = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/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 | } | |
1010 | if (!strcmp(name, "ratep")) { | |
1011 | len = num_arg(&user_buffer[i], 10, &value); | |
1012 | if (len < 0) | |
1013 | return len; | |
1014 | ||
1015 | i += len; | |
1016 | if (!value) | |
1017 | return len; | |
1018 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1019 | if (debug) | |
f9467eae | 1020 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1021 | |
1022 | sprintf(pg_result, "OK: rate=%lu", value); | |
1023 | return count; | |
1024 | } | |
222f1806 | 1025 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1026 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1027 | if (len < 0) |
222f1806 | 1028 | return len; |
63adc6fb | 1029 | |
1da177e4 | 1030 | i += len; |
222f1806 LC |
1031 | if (value != pkt_dev->udp_src_min) { |
1032 | pkt_dev->udp_src_min = value; | |
1033 | pkt_dev->cur_udp_src = value; | |
1034 | } | |
1da177e4 LT |
1035 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1036 | return count; | |
1037 | } | |
222f1806 | 1038 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1039 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1040 | if (len < 0) |
222f1806 | 1041 | return len; |
63adc6fb | 1042 | |
1da177e4 | 1043 | i += len; |
222f1806 LC |
1044 | if (value != pkt_dev->udp_dst_min) { |
1045 | pkt_dev->udp_dst_min = value; | |
1046 | pkt_dev->cur_udp_dst = value; | |
1047 | } | |
1da177e4 LT |
1048 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1049 | return count; | |
1050 | } | |
222f1806 | 1051 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1052 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1053 | if (len < 0) |
222f1806 | 1054 | return len; |
63adc6fb | 1055 | |
1da177e4 | 1056 | i += len; |
222f1806 LC |
1057 | if (value != pkt_dev->udp_src_max) { |
1058 | pkt_dev->udp_src_max = value; | |
1059 | pkt_dev->cur_udp_src = value; | |
1060 | } | |
1da177e4 LT |
1061 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1062 | return count; | |
1063 | } | |
222f1806 | 1064 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1065 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1066 | if (len < 0) |
222f1806 | 1067 | return len; |
63adc6fb | 1068 | |
1da177e4 | 1069 | i += len; |
222f1806 LC |
1070 | if (value != pkt_dev->udp_dst_max) { |
1071 | pkt_dev->udp_dst_max = value; | |
1072 | pkt_dev->cur_udp_dst = value; | |
1073 | } | |
1da177e4 LT |
1074 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1075 | return count; | |
1076 | } | |
1077 | if (!strcmp(name, "clone_skb")) { | |
1078 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1079 | if (len < 0) |
222f1806 | 1080 | return len; |
63adc6fb | 1081 | |
1da177e4 | 1082 | i += len; |
222f1806 LC |
1083 | pkt_dev->clone_skb = value; |
1084 | ||
1da177e4 LT |
1085 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1086 | return count; | |
1087 | } | |
1088 | if (!strcmp(name, "count")) { | |
1089 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1090 | if (len < 0) |
222f1806 | 1091 | return len; |
63adc6fb | 1092 | |
1da177e4 LT |
1093 | i += len; |
1094 | pkt_dev->count = value; | |
1095 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1096 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1097 | return count; |
1098 | } | |
1099 | if (!strcmp(name, "src_mac_count")) { | |
1100 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1101 | if (len < 0) |
222f1806 | 1102 | return len; |
63adc6fb | 1103 | |
1da177e4 LT |
1104 | i += len; |
1105 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1106 | pkt_dev->src_mac_count = value; |
1107 | pkt_dev->cur_src_mac_offset = 0; | |
1108 | } | |
1109 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1110 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1111 | return count; |
1112 | } | |
1113 | if (!strcmp(name, "dst_mac_count")) { | |
1114 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1115 | if (len < 0) |
222f1806 | 1116 | return len; |
63adc6fb | 1117 | |
1da177e4 LT |
1118 | i += len; |
1119 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1120 | pkt_dev->dst_mac_count = value; |
1121 | pkt_dev->cur_dst_mac_offset = 0; | |
1122 | } | |
1123 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1124 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1125 | return count; |
1126 | } | |
e99b99b4 RO |
1127 | if (!strcmp(name, "node")) { |
1128 | len = num_arg(&user_buffer[i], 10, &value); | |
1129 | if (len < 0) | |
1130 | return len; | |
1131 | ||
1132 | i += len; | |
1133 | ||
1134 | if (node_possible(value)) { | |
1135 | pkt_dev->node = value; | |
1136 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
1137 | } | |
1138 | else | |
1139 | sprintf(pg_result, "ERROR: node not possible"); | |
1140 | return count; | |
1141 | } | |
1da177e4 | 1142 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1143 | char f[32]; |
1144 | memset(f, 0, 32); | |
1da177e4 | 1145 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1146 | if (len < 0) |
222f1806 | 1147 | return len; |
63adc6fb | 1148 | |
1da177e4 LT |
1149 | if (copy_from_user(f, &user_buffer[i], len)) |
1150 | return -EFAULT; | |
1151 | i += len; | |
222f1806 LC |
1152 | if (strcmp(f, "IPSRC_RND") == 0) |
1153 | pkt_dev->flags |= F_IPSRC_RND; | |
1154 | ||
1155 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1156 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1157 | ||
1158 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1159 | pkt_dev->flags |= F_TXSIZE_RND; | |
1160 | ||
1161 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1162 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1163 | ||
1164 | else if (strcmp(f, "IPDST_RND") == 0) | |
1165 | pkt_dev->flags |= F_IPDST_RND; | |
1166 | ||
1167 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1168 | pkt_dev->flags &= ~F_IPDST_RND; | |
1169 | ||
1170 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1171 | pkt_dev->flags |= F_UDPSRC_RND; | |
1172 | ||
1173 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1174 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1175 | ||
1176 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1177 | pkt_dev->flags |= F_UDPDST_RND; | |
1178 | ||
1179 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1180 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1181 | ||
1182 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1183 | pkt_dev->flags |= F_MACSRC_RND; | |
1184 | ||
1185 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1186 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1187 | ||
1188 | else if (strcmp(f, "MACDST_RND") == 0) | |
1189 | pkt_dev->flags |= F_MACDST_RND; | |
1190 | ||
1191 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1192 | pkt_dev->flags &= ~F_MACDST_RND; | |
1193 | ||
ca6549af SW |
1194 | else if (strcmp(f, "MPLS_RND") == 0) |
1195 | pkt_dev->flags |= F_MPLS_RND; | |
1196 | ||
1197 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1198 | pkt_dev->flags &= ~F_MPLS_RND; | |
1199 | ||
34954ddc FF |
1200 | else if (strcmp(f, "VID_RND") == 0) |
1201 | pkt_dev->flags |= F_VID_RND; | |
1202 | ||
1203 | else if (strcmp(f, "!VID_RND") == 0) | |
1204 | pkt_dev->flags &= ~F_VID_RND; | |
1205 | ||
1206 | else if (strcmp(f, "SVID_RND") == 0) | |
1207 | pkt_dev->flags |= F_SVID_RND; | |
1208 | ||
1209 | else if (strcmp(f, "!SVID_RND") == 0) | |
1210 | pkt_dev->flags &= ~F_SVID_RND; | |
1211 | ||
007a531b JHS |
1212 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1213 | pkt_dev->flags |= F_FLOW_SEQ; | |
1214 | ||
45b270f8 RO |
1215 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1216 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1217 | ||
1218 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1219 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1220 | |
1221 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1222 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1223 | ||
1224 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1225 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1226 | #ifdef CONFIG_XFRM |
1227 | else if (strcmp(f, "IPSEC") == 0) | |
1228 | pkt_dev->flags |= F_IPSEC_ON; | |
1229 | #endif | |
1230 | ||
1ca7768c FF |
1231 | else if (strcmp(f, "!IPV6") == 0) |
1232 | pkt_dev->flags &= ~F_IPV6; | |
1233 | ||
e99b99b4 RO |
1234 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1235 | pkt_dev->flags |= F_NODE; | |
1236 | ||
1237 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1238 | pkt_dev->flags &= ~F_NODE; | |
1239 | ||
222f1806 LC |
1240 | else { |
1241 | sprintf(pg_result, | |
1242 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1243 | f, | |
1ca7768c | 1244 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1245 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1246 | return count; |
1247 | } | |
1da177e4 LT |
1248 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1249 | return count; | |
1250 | } | |
1251 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1252 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1253 | if (len < 0) |
222f1806 | 1254 | return len; |
1da177e4 | 1255 | |
222f1806 | 1256 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1257 | return -EFAULT; |
222f1806 LC |
1258 | buf[len] = 0; |
1259 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1260 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1261 | strncpy(pkt_dev->dst_min, buf, len); | |
1262 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1263 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1264 | } | |
1265 | if (debug) | |
25a8b254 | 1266 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", |
222f1806 LC |
1267 | pkt_dev->dst_min); |
1268 | i += len; | |
1da177e4 LT |
1269 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1270 | return count; | |
1271 | } | |
1272 | if (!strcmp(name, "dst_max")) { | |
1273 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1274 | if (len < 0) |
222f1806 | 1275 | return len; |
63adc6fb | 1276 | |
1da177e4 | 1277 | |
222f1806 | 1278 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1279 | return -EFAULT; |
1280 | ||
222f1806 LC |
1281 | buf[len] = 0; |
1282 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1283 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1284 | strncpy(pkt_dev->dst_max, buf, len); | |
1285 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1286 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1287 | } | |
1288 | if (debug) | |
25a8b254 | 1289 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", |
222f1806 | 1290 | pkt_dev->dst_max); |
1da177e4 LT |
1291 | i += len; |
1292 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1293 | return count; | |
1294 | } | |
1295 | if (!strcmp(name, "dst6")) { | |
1296 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1297 | if (len < 0) |
1298 | return len; | |
1da177e4 LT |
1299 | |
1300 | pkt_dev->flags |= F_IPV6; | |
1301 | ||
222f1806 | 1302 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1303 | return -EFAULT; |
222f1806 | 1304 | buf[len] = 0; |
1da177e4 LT |
1305 | |
1306 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
222f1806 | 1307 | fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr); |
1da177e4 LT |
1308 | |
1309 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); | |
1310 | ||
222f1806 | 1311 | if (debug) |
25a8b254 | 1312 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); |
1da177e4 | 1313 | |
222f1806 | 1314 | i += len; |
1da177e4 LT |
1315 | sprintf(pg_result, "OK: dst6=%s", buf); |
1316 | return count; | |
1317 | } | |
1318 | if (!strcmp(name, "dst6_min")) { | |
1319 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1320 | if (len < 0) |
1321 | return len; | |
1da177e4 LT |
1322 | |
1323 | pkt_dev->flags |= F_IPV6; | |
1324 | ||
222f1806 | 1325 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1326 | return -EFAULT; |
222f1806 | 1327 | buf[len] = 0; |
1da177e4 LT |
1328 | |
1329 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
222f1806 | 1330 | fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); |
1da177e4 | 1331 | |
222f1806 LC |
1332 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, |
1333 | &pkt_dev->min_in6_daddr); | |
1334 | if (debug) | |
25a8b254 | 1335 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); |
1da177e4 | 1336 | |
222f1806 | 1337 | i += len; |
1da177e4 LT |
1338 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1339 | return count; | |
1340 | } | |
1341 | if (!strcmp(name, "dst6_max")) { | |
1342 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1343 | if (len < 0) |
1344 | return len; | |
1da177e4 LT |
1345 | |
1346 | pkt_dev->flags |= F_IPV6; | |
1347 | ||
222f1806 | 1348 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1349 | return -EFAULT; |
222f1806 | 1350 | buf[len] = 0; |
1da177e4 LT |
1351 | |
1352 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
222f1806 | 1353 | fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); |
1da177e4 | 1354 | |
222f1806 | 1355 | if (debug) |
25a8b254 | 1356 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); |
1da177e4 | 1357 | |
222f1806 | 1358 | i += len; |
1da177e4 LT |
1359 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1360 | return count; | |
1361 | } | |
1362 | if (!strcmp(name, "src6")) { | |
1363 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1364 | if (len < 0) |
1365 | return len; | |
1da177e4 LT |
1366 | |
1367 | pkt_dev->flags |= F_IPV6; | |
1368 | ||
222f1806 | 1369 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1370 | return -EFAULT; |
222f1806 | 1371 | buf[len] = 0; |
1da177e4 LT |
1372 | |
1373 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
222f1806 | 1374 | fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr); |
1da177e4 LT |
1375 | |
1376 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); | |
1377 | ||
222f1806 | 1378 | if (debug) |
25a8b254 | 1379 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); |
222f1806 LC |
1380 | |
1381 | i += len; | |
1da177e4 LT |
1382 | sprintf(pg_result, "OK: src6=%s", buf); |
1383 | return count; | |
1384 | } | |
1385 | if (!strcmp(name, "src_min")) { | |
1386 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1387 | if (len < 0) |
222f1806 | 1388 | return len; |
63adc6fb | 1389 | |
222f1806 | 1390 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1391 | return -EFAULT; |
222f1806 LC |
1392 | buf[len] = 0; |
1393 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1394 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1395 | strncpy(pkt_dev->src_min, buf, len); | |
1396 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1397 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1398 | } | |
1399 | if (debug) | |
25a8b254 | 1400 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", |
222f1806 | 1401 | pkt_dev->src_min); |
1da177e4 LT |
1402 | i += len; |
1403 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1404 | return count; | |
1405 | } | |
1406 | if (!strcmp(name, "src_max")) { | |
1407 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1408 | if (len < 0) |
222f1806 | 1409 | return len; |
63adc6fb | 1410 | |
222f1806 | 1411 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1412 | return -EFAULT; |
222f1806 LC |
1413 | buf[len] = 0; |
1414 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1415 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1416 | strncpy(pkt_dev->src_max, buf, len); | |
1417 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1418 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1419 | } | |
1420 | if (debug) | |
25a8b254 | 1421 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", |
222f1806 | 1422 | pkt_dev->src_max); |
1da177e4 LT |
1423 | i += len; |
1424 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1425 | return count; | |
1426 | } | |
1427 | if (!strcmp(name, "dst_mac")) { | |
1428 | char *v = valstr; | |
f404e9a6 | 1429 | unsigned char old_dmac[ETH_ALEN]; |
1da177e4 | 1430 | unsigned char *m = pkt_dev->dst_mac; |
f404e9a6 | 1431 | memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1432 | |
1da177e4 | 1433 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1434 | if (len < 0) |
222f1806 | 1435 | return len; |
63adc6fb | 1436 | |
1da177e4 | 1437 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1438 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1439 | return -EFAULT; |
1440 | i += len; | |
1441 | ||
222f1806 | 1442 | for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) { |
451e07a2 AS |
1443 | int value; |
1444 | ||
1445 | value = hex_to_bin(*v); | |
1446 | if (value >= 0) | |
1447 | *m = *m * 16 + value; | |
1448 | ||
1da177e4 LT |
1449 | if (*v == ':') { |
1450 | m++; | |
1451 | *m = 0; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | /* Set up Dest MAC */ | |
f404e9a6 KK |
1456 | if (compare_ether_addr(old_dmac, pkt_dev->dst_mac)) |
1457 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
222f1806 | 1458 | |
1da177e4 LT |
1459 | sprintf(pg_result, "OK: dstmac"); |
1460 | return count; | |
1461 | } | |
1462 | if (!strcmp(name, "src_mac")) { | |
1463 | char *v = valstr; | |
ce5d0b47 | 1464 | unsigned char old_smac[ETH_ALEN]; |
1da177e4 LT |
1465 | unsigned char *m = pkt_dev->src_mac; |
1466 | ||
ce5d0b47 AR |
1467 | memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN); |
1468 | ||
1da177e4 | 1469 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1470 | if (len < 0) |
222f1806 | 1471 | return len; |
63adc6fb | 1472 | |
1da177e4 | 1473 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1474 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1475 | return -EFAULT; |
1476 | i += len; | |
1477 | ||
222f1806 | 1478 | for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) { |
451e07a2 AS |
1479 | int value; |
1480 | ||
1481 | value = hex_to_bin(*v); | |
1482 | if (value >= 0) | |
1483 | *m = *m * 16 + value; | |
1484 | ||
1da177e4 LT |
1485 | if (*v == ':') { |
1486 | m++; | |
1487 | *m = 0; | |
1488 | } | |
222f1806 | 1489 | } |
1da177e4 | 1490 | |
ce5d0b47 AR |
1491 | /* Set up Src MAC */ |
1492 | if (compare_ether_addr(old_smac, pkt_dev->src_mac)) | |
1493 | memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN); | |
1494 | ||
222f1806 | 1495 | sprintf(pg_result, "OK: srcmac"); |
1da177e4 LT |
1496 | return count; |
1497 | } | |
1498 | ||
222f1806 LC |
1499 | if (!strcmp(name, "clear_counters")) { |
1500 | pktgen_clear_counters(pkt_dev); | |
1501 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1502 | return count; | |
1503 | } | |
1da177e4 LT |
1504 | |
1505 | if (!strcmp(name, "flows")) { | |
1506 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1507 | if (len < 0) |
222f1806 | 1508 | return len; |
63adc6fb | 1509 | |
1da177e4 LT |
1510 | i += len; |
1511 | if (value > MAX_CFLOWS) | |
1512 | value = MAX_CFLOWS; | |
1513 | ||
1514 | pkt_dev->cflows = value; | |
1515 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1516 | return count; | |
1517 | } | |
1518 | ||
1519 | if (!strcmp(name, "flowlen")) { | |
1520 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1521 | if (len < 0) |
222f1806 | 1522 | return len; |
63adc6fb | 1523 | |
1da177e4 LT |
1524 | i += len; |
1525 | pkt_dev->lflow = value; | |
1526 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1527 | return count; | |
1528 | } | |
222f1806 | 1529 | |
45b270f8 RO |
1530 | if (!strcmp(name, "queue_map_min")) { |
1531 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1532 | if (len < 0) |
45b270f8 | 1533 | return len; |
63adc6fb | 1534 | |
45b270f8 RO |
1535 | i += len; |
1536 | pkt_dev->queue_map_min = value; | |
1537 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1538 | return count; | |
1539 | } | |
1540 | ||
1541 | if (!strcmp(name, "queue_map_max")) { | |
1542 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1543 | if (len < 0) |
45b270f8 | 1544 | return len; |
63adc6fb | 1545 | |
45b270f8 RO |
1546 | i += len; |
1547 | pkt_dev->queue_map_max = value; | |
1548 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1549 | return count; | |
1550 | } | |
1551 | ||
ca6549af | 1552 | if (!strcmp(name, "mpls")) { |
cfcabdcc SH |
1553 | unsigned n, cnt; |
1554 | ||
ca6549af | 1555 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1556 | if (len < 0) |
1557 | return len; | |
ca6549af | 1558 | i += len; |
cfcabdcc | 1559 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1560 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1561 | cnt += sprintf(pg_result + cnt, |
1562 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1563 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1564 | |
1565 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1566 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1567 | pkt_dev->svlan_id = 0xffff; | |
1568 | ||
1569 | if (debug) | |
25a8b254 | 1570 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1571 | } |
1572 | return count; | |
1573 | } | |
1574 | ||
1575 | if (!strcmp(name, "vlan_id")) { | |
1576 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1577 | if (len < 0) |
34954ddc | 1578 | return len; |
63adc6fb | 1579 | |
34954ddc FF |
1580 | i += len; |
1581 | if (value <= 4095) { | |
1582 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1583 | ||
1584 | if (debug) | |
25a8b254 | 1585 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); |
34954ddc FF |
1586 | |
1587 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1588 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1589 | |
1590 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1591 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1592 | } else { | |
1593 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1594 | pkt_dev->svlan_id = 0xffff; | |
1595 | ||
1596 | if (debug) | |
25a8b254 | 1597 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1598 | } |
1599 | return count; | |
1600 | } | |
1601 | ||
1602 | if (!strcmp(name, "vlan_p")) { | |
1603 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1604 | if (len < 0) |
34954ddc | 1605 | return len; |
63adc6fb | 1606 | |
34954ddc FF |
1607 | i += len; |
1608 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1609 | pkt_dev->vlan_p = value; | |
1610 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1611 | } else { | |
1612 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1613 | } | |
1614 | return count; | |
1615 | } | |
1616 | ||
1617 | if (!strcmp(name, "vlan_cfi")) { | |
1618 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1619 | if (len < 0) |
34954ddc | 1620 | return len; |
63adc6fb | 1621 | |
34954ddc FF |
1622 | i += len; |
1623 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1624 | pkt_dev->vlan_cfi = value; | |
1625 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1626 | } else { | |
1627 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1628 | } | |
1629 | return count; | |
1630 | } | |
1631 | ||
1632 | if (!strcmp(name, "svlan_id")) { | |
1633 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1634 | if (len < 0) |
34954ddc | 1635 | return len; |
63adc6fb | 1636 | |
34954ddc FF |
1637 | i += len; |
1638 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1639 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1640 | ||
1641 | if (debug) | |
25a8b254 | 1642 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); |
34954ddc FF |
1643 | |
1644 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1645 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1646 | |
1647 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1648 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1649 | } else { | |
1650 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1651 | pkt_dev->svlan_id = 0xffff; | |
1652 | ||
1653 | if (debug) | |
25a8b254 | 1654 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1655 | } |
1656 | return count; | |
1657 | } | |
1658 | ||
1659 | if (!strcmp(name, "svlan_p")) { | |
1660 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1661 | if (len < 0) |
34954ddc | 1662 | return len; |
63adc6fb | 1663 | |
34954ddc FF |
1664 | i += len; |
1665 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1666 | pkt_dev->svlan_p = value; | |
1667 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1668 | } else { | |
1669 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1670 | } | |
1671 | return count; | |
1672 | } | |
1673 | ||
1674 | if (!strcmp(name, "svlan_cfi")) { | |
1675 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1676 | if (len < 0) |
34954ddc | 1677 | return len; |
63adc6fb | 1678 | |
34954ddc FF |
1679 | i += len; |
1680 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1681 | pkt_dev->svlan_cfi = value; | |
1682 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1683 | } else { | |
1684 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1685 | } | |
ca6549af SW |
1686 | return count; |
1687 | } | |
1688 | ||
1ca7768c FF |
1689 | if (!strcmp(name, "tos")) { |
1690 | __u32 tmp_value = 0; | |
1691 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1692 | if (len < 0) |
1ca7768c | 1693 | return len; |
63adc6fb | 1694 | |
1ca7768c FF |
1695 | i += len; |
1696 | if (len == 2) { | |
1697 | pkt_dev->tos = tmp_value; | |
1698 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1699 | } else { | |
1700 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1701 | } | |
1702 | return count; | |
1703 | } | |
1704 | ||
1705 | if (!strcmp(name, "traffic_class")) { | |
1706 | __u32 tmp_value = 0; | |
1707 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1708 | if (len < 0) |
1ca7768c | 1709 | return len; |
63adc6fb | 1710 | |
1ca7768c FF |
1711 | i += len; |
1712 | if (len == 2) { | |
1713 | pkt_dev->traffic_class = tmp_value; | |
1714 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1715 | } else { | |
1716 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1717 | } | |
1718 | return count; | |
1719 | } | |
1720 | ||
9e50e3ac JF |
1721 | if (!strcmp(name, "skb_priority")) { |
1722 | len = num_arg(&user_buffer[i], 9, &value); | |
1723 | if (len < 0) | |
1724 | return len; | |
1725 | ||
1726 | i += len; | |
1727 | pkt_dev->skb_priority = value; | |
1728 | sprintf(pg_result, "OK: skb_priority=%i", | |
1729 | pkt_dev->skb_priority); | |
1730 | return count; | |
1731 | } | |
1732 | ||
1da177e4 LT |
1733 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1734 | return -EINVAL; | |
1735 | } | |
1736 | ||
d50a6b56 | 1737 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1738 | { |
d50a6b56 SH |
1739 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1740 | } | |
1da177e4 | 1741 | |
9a32144e | 1742 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1743 | .owner = THIS_MODULE, |
1744 | .open = pktgen_if_open, | |
1745 | .read = seq_read, | |
1746 | .llseek = seq_lseek, | |
1747 | .write = pktgen_if_write, | |
1748 | .release = single_release, | |
d50a6b56 | 1749 | }; |
1da177e4 | 1750 | |
d50a6b56 SH |
1751 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1752 | { | |
222f1806 | 1753 | struct pktgen_thread *t = seq->private; |
648fda74 | 1754 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1755 | |
1756 | BUG_ON(!t); | |
1da177e4 | 1757 | |
222f1806 | 1758 | seq_printf(seq, "Running: "); |
1da177e4 | 1759 | |
222f1806 | 1760 | if_lock(t); |
c26a8016 | 1761 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1762 | if (pkt_dev->running) |
593f63b0 | 1763 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1764 | |
222f1806 LC |
1765 | seq_printf(seq, "\nStopped: "); |
1766 | ||
c26a8016 | 1767 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1768 | if (!pkt_dev->running) |
593f63b0 | 1769 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1770 | |
1771 | if (t->result[0]) | |
d50a6b56 | 1772 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1773 | else |
d50a6b56 | 1774 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1775 | |
222f1806 | 1776 | if_unlock(t); |
1da177e4 | 1777 | |
d50a6b56 | 1778 | return 0; |
1da177e4 LT |
1779 | } |
1780 | ||
d50a6b56 | 1781 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1782 | const char __user * user_buffer, |
1783 | size_t count, loff_t * offset) | |
1da177e4 | 1784 | { |
8a994a71 | 1785 | struct seq_file *seq = file->private_data; |
222f1806 | 1786 | struct pktgen_thread *t = seq->private; |
d6182223 | 1787 | int i, max, len, ret; |
1da177e4 | 1788 | char name[40]; |
222f1806 | 1789 | char *pg_result; |
d50a6b56 | 1790 | |
1da177e4 | 1791 | if (count < 1) { |
222f1806 | 1792 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1793 | return -EINVAL; |
1794 | } | |
d50a6b56 | 1795 | |
d6182223 PG |
1796 | max = count; |
1797 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1798 | if (len < 0) |
d50a6b56 SH |
1799 | return len; |
1800 | ||
d6182223 | 1801 | i = len; |
d50a6b56 | 1802 | |
1da177e4 LT |
1803 | /* Read variable name */ |
1804 | ||
1805 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1806 | if (len < 0) |
d50a6b56 | 1807 | return len; |
222f1806 | 1808 | |
1da177e4 LT |
1809 | memset(name, 0, sizeof(name)); |
1810 | if (copy_from_user(name, &user_buffer[i], len)) | |
1811 | return -EFAULT; | |
1812 | i += len; | |
d50a6b56 | 1813 | |
222f1806 | 1814 | max = count - i; |
1da177e4 | 1815 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1816 | if (len < 0) |
d50a6b56 SH |
1817 | return len; |
1818 | ||
1da177e4 LT |
1819 | i += len; |
1820 | ||
d50a6b56 | 1821 | if (debug) |
25a8b254 DM |
1822 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", |
1823 | name, (unsigned long)count); | |
1da177e4 | 1824 | |
222f1806 | 1825 | if (!t) { |
f9467eae | 1826 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1827 | ret = -EINVAL; |
1828 | goto out; | |
1829 | } | |
1830 | ||
1831 | pg_result = &(t->result[0]); | |
1832 | ||
222f1806 LC |
1833 | if (!strcmp(name, "add_device")) { |
1834 | char f[32]; | |
1835 | memset(f, 0, 32); | |
1da177e4 | 1836 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1837 | if (len < 0) { |
1838 | ret = len; | |
1da177e4 LT |
1839 | goto out; |
1840 | } | |
222f1806 | 1841 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1842 | return -EFAULT; |
1843 | i += len; | |
6146e6a4 | 1844 | mutex_lock(&pktgen_thread_lock); |
222f1806 | 1845 | pktgen_add_device(t, f); |
6146e6a4 | 1846 | mutex_unlock(&pktgen_thread_lock); |
222f1806 LC |
1847 | ret = count; |
1848 | sprintf(pg_result, "OK: add_device=%s", f); | |
1da177e4 LT |
1849 | goto out; |
1850 | } | |
1851 | ||
222f1806 | 1852 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1853 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1854 | t->control |= T_REMDEVALL; |
6146e6a4 | 1855 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1856 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1857 | ret = count; |
222f1806 | 1858 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1859 | goto out; |
1860 | } | |
1861 | ||
222f1806 | 1862 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1863 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1864 | ret = count; |
1da177e4 LT |
1865 | goto out; |
1866 | } | |
1867 | ||
1868 | ret = -EINVAL; | |
222f1806 | 1869 | out: |
1da177e4 LT |
1870 | return ret; |
1871 | } | |
1872 | ||
d50a6b56 | 1873 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1874 | { |
d50a6b56 | 1875 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1876 | } |
1877 | ||
9a32144e | 1878 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1879 | .owner = THIS_MODULE, |
1880 | .open = pktgen_thread_open, | |
1881 | .read = seq_read, | |
1882 | .llseek = seq_lseek, | |
1883 | .write = pktgen_thread_write, | |
1884 | .release = single_release, | |
d50a6b56 | 1885 | }; |
1da177e4 LT |
1886 | |
1887 | /* Think find or remove for NN */ | |
222f1806 | 1888 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) |
1da177e4 LT |
1889 | { |
1890 | struct pktgen_thread *t; | |
1891 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1892 | bool exact = (remove == FIND); |
1da177e4 | 1893 | |
cdcdbe0b | 1894 | list_for_each_entry(t, &pktgen_threads, th_list) { |
3e984840 | 1895 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1896 | if (pkt_dev) { |
222f1806 LC |
1897 | if (remove) { |
1898 | if_lock(t); | |
1899 | pkt_dev->removal_mark = 1; | |
1900 | t->control |= T_REMDEV; | |
1901 | if_unlock(t); | |
1902 | } | |
1da177e4 LT |
1903 | break; |
1904 | } | |
1da177e4 | 1905 | } |
222f1806 | 1906 | return pkt_dev; |
1da177e4 LT |
1907 | } |
1908 | ||
95ed63f7 AK |
1909 | /* |
1910 | * mark a device for removal | |
1911 | */ | |
39df232f | 1912 | static void pktgen_mark_device(const char *ifname) |
1da177e4 LT |
1913 | { |
1914 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1915 | const int max_tries = 10, msec_per_try = 125; |
1916 | int i = 0; | |
95ed63f7 | 1917 | |
6146e6a4 | 1918 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1919 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1920 | |
222f1806 | 1921 | while (1) { |
95ed63f7 AK |
1922 | |
1923 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
222f1806 LC |
1924 | if (pkt_dev == NULL) |
1925 | break; /* success */ | |
95ed63f7 | 1926 | |
6146e6a4 | 1927 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1928 | pr_debug("%s: waiting for %s to disappear....\n", |
1929 | __func__, ifname); | |
95ed63f7 | 1930 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1931 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1932 | |
1933 | if (++i >= max_tries) { | |
f9467eae JP |
1934 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1935 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1936 | break; |
1937 | } | |
1938 | ||
1939 | } | |
1940 | ||
6146e6a4 | 1941 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1942 | } |
95ed63f7 | 1943 | |
39df232f SH |
1944 | static void pktgen_change_name(struct net_device *dev) |
1945 | { | |
1946 | struct pktgen_thread *t; | |
1947 | ||
1948 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1949 | struct pktgen_dev *pkt_dev; | |
1950 | ||
1951 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1952 | if (pkt_dev->odev != dev) | |
1953 | continue; | |
1954 | ||
1955 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1956 | ||
2975315b AD |
1957 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
1958 | pg_proc_dir, | |
1959 | &pktgen_if_fops, | |
1960 | pkt_dev); | |
39df232f | 1961 | if (!pkt_dev->entry) |
f9467eae JP |
1962 | pr_err("can't move proc entry for '%s'\n", |
1963 | dev->name); | |
39df232f SH |
1964 | break; |
1965 | } | |
1966 | } | |
1da177e4 LT |
1967 | } |
1968 | ||
222f1806 LC |
1969 | static int pktgen_device_event(struct notifier_block *unused, |
1970 | unsigned long event, void *ptr) | |
1da177e4 | 1971 | { |
39df232f | 1972 | struct net_device *dev = ptr; |
1da177e4 | 1973 | |
721499e8 | 1974 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
1975 | return NOTIFY_DONE; |
1976 | ||
1da177e4 LT |
1977 | /* It is OK that we do not hold the group lock right now, |
1978 | * as we run under the RTNL lock. | |
1979 | */ | |
1980 | ||
1981 | switch (event) { | |
39df232f SH |
1982 | case NETDEV_CHANGENAME: |
1983 | pktgen_change_name(dev); | |
1da177e4 | 1984 | break; |
222f1806 | 1985 | |
1da177e4 | 1986 | case NETDEV_UNREGISTER: |
222f1806 | 1987 | pktgen_mark_device(dev->name); |
1da177e4 | 1988 | break; |
3ff50b79 | 1989 | } |
1da177e4 LT |
1990 | |
1991 | return NOTIFY_DONE; | |
1992 | } | |
1993 | ||
63adc6fb SH |
1994 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, |
1995 | const char *ifname) | |
e6fce5b9 RO |
1996 | { |
1997 | char b[IFNAMSIZ+5]; | |
d6182223 | 1998 | int i; |
e6fce5b9 | 1999 | |
63adc6fb SH |
2000 | for (i = 0; ifname[i] != '@'; i++) { |
2001 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
2002 | break; |
2003 | ||
2004 | b[i] = ifname[i]; | |
2005 | } | |
2006 | b[i] = 0; | |
2007 | ||
2008 | return dev_get_by_name(&init_net, b); | |
2009 | } | |
2010 | ||
2011 | ||
1da177e4 LT |
2012 | /* Associate pktgen_dev with a device. */ |
2013 | ||
39df232f | 2014 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) |
222f1806 | 2015 | { |
1da177e4 | 2016 | struct net_device *odev; |
39df232f | 2017 | int err; |
1da177e4 LT |
2018 | |
2019 | /* Clean old setups */ | |
1da177e4 LT |
2020 | if (pkt_dev->odev) { |
2021 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2022 | pkt_dev->odev = NULL; |
2023 | } | |
1da177e4 | 2024 | |
e6fce5b9 | 2025 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); |
1da177e4 | 2026 | if (!odev) { |
f9467eae | 2027 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2028 | return -ENODEV; |
1da177e4 | 2029 | } |
39df232f | 2030 | |
1da177e4 | 2031 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2032 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2033 | err = -EINVAL; |
2034 | } else if (!netif_running(odev)) { | |
f9467eae | 2035 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2036 | err = -ENETDOWN; |
2037 | } else { | |
2038 | pkt_dev->odev = odev; | |
2039 | return 0; | |
1da177e4 | 2040 | } |
1da177e4 | 2041 | |
1da177e4 | 2042 | dev_put(odev); |
39df232f | 2043 | return err; |
1da177e4 LT |
2044 | } |
2045 | ||
2046 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2047 | * structure to have the right information to create/send packets | |
2048 | */ | |
2049 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2050 | { | |
64c00d81 AG |
2051 | int ntxq; |
2052 | ||
222f1806 | 2053 | if (!pkt_dev->odev) { |
f9467eae | 2054 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2055 | sprintf(pkt_dev->result, |
2056 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2057 | return; | |
2058 | } | |
2059 | ||
64c00d81 AG |
2060 | /* make sure that we don't pick a non-existing transmit queue */ |
2061 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2062 | |
64c00d81 | 2063 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2064 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2065 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2066 | pkt_dev->odevname); | |
64c00d81 AG |
2067 | pkt_dev->queue_map_min = ntxq - 1; |
2068 | } | |
88271660 | 2069 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2070 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2071 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2072 | pkt_dev->odevname); | |
64c00d81 AG |
2073 | pkt_dev->queue_map_max = ntxq - 1; |
2074 | } | |
2075 | ||
222f1806 | 2076 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2077 | |
f404e9a6 | 2078 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2079 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2080 | |
222f1806 | 2081 | /* Set up Dest MAC */ |
f404e9a6 | 2082 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2083 | |
222f1806 LC |
2084 | /* Set up pkt size */ |
2085 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2086 | ||
2087 | if (pkt_dev->flags & F_IPV6) { | |
1da177e4 | 2088 | /* |
4ec93edb | 2089 | * Skip this automatic address setting until locks or functions |
1da177e4 LT |
2090 | * gets exported |
2091 | */ | |
2092 | ||
2093 | #ifdef NOTNOW | |
222f1806 | 2094 | int i, set = 0, err = 1; |
1da177e4 LT |
2095 | struct inet6_dev *idev; |
2096 | ||
222f1806 LC |
2097 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2098 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2099 | set = 1; |
2100 | break; | |
2101 | } | |
2102 | ||
222f1806 LC |
2103 | if (!set) { |
2104 | ||
1da177e4 LT |
2105 | /* |
2106 | * Use linklevel address if unconfigured. | |
2107 | * | |
2108 | * use ipv6_get_lladdr if/when it's get exported | |
2109 | */ | |
2110 | ||
8814c4b5 | 2111 | rcu_read_lock(); |
63adc6fb SH |
2112 | idev = __in6_dev_get(pkt_dev->odev); |
2113 | if (idev) { | |
1da177e4 LT |
2114 | struct inet6_ifaddr *ifp; |
2115 | ||
2116 | read_lock_bh(&idev->lock); | |
222f1806 LC |
2117 | for (ifp = idev->addr_list; ifp; |
2118 | ifp = ifp->if_next) { | |
f64f9e71 JP |
2119 | if (ifp->scope == IFA_LINK && |
2120 | !(ifp->flags & IFA_F_TENTATIVE)) { | |
222f1806 LC |
2121 | ipv6_addr_copy(&pkt_dev-> |
2122 | cur_in6_saddr, | |
2123 | &ifp->addr); | |
1da177e4 LT |
2124 | err = 0; |
2125 | break; | |
2126 | } | |
2127 | } | |
2128 | read_unlock_bh(&idev->lock); | |
2129 | } | |
8814c4b5 | 2130 | rcu_read_unlock(); |
222f1806 | 2131 | if (err) |
f9467eae | 2132 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 LT |
2133 | } |
2134 | #endif | |
222f1806 | 2135 | } else { |
1da177e4 LT |
2136 | pkt_dev->saddr_min = 0; |
2137 | pkt_dev->saddr_max = 0; | |
2138 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2139 | |
2140 | struct in_device *in_dev; | |
1da177e4 LT |
2141 | |
2142 | rcu_read_lock(); | |
e5ed6399 | 2143 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2144 | if (in_dev) { |
2145 | if (in_dev->ifa_list) { | |
222f1806 LC |
2146 | pkt_dev->saddr_min = |
2147 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2148 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2149 | } | |
1da177e4 LT |
2150 | } |
2151 | rcu_read_unlock(); | |
222f1806 | 2152 | } else { |
1da177e4 LT |
2153 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2154 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2155 | } | |
2156 | ||
2157 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2158 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2159 | } | |
222f1806 LC |
2160 | /* Initialize current values. */ |
2161 | pkt_dev->cur_dst_mac_offset = 0; | |
2162 | pkt_dev->cur_src_mac_offset = 0; | |
2163 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2164 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2165 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2166 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2167 | pkt_dev->nflows = 0; |
2168 | } | |
2169 | ||
fd29cf72 SH |
2170 | |
2171 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2172 | { | |
ef87979c | 2173 | ktime_t start_time, end_time; |
417bc4b8 | 2174 | s64 remaining; |
2bc481cf SH |
2175 | struct hrtimer_sleeper t; |
2176 | ||
2177 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2178 | hrtimer_set_expires(&t.timer, spin_until); | |
2179 | ||
43d28b65 | 2180 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2181 | if (remaining <= 0) { |
2182 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2183 | return; |
417bc4b8 | 2184 | } |
2bc481cf | 2185 | |
ef87979c | 2186 | start_time = ktime_now(); |
43d28b65 DT |
2187 | if (remaining < 100000) |
2188 | ndelay(remaining); /* really small just spin */ | |
2bc481cf SH |
2189 | else { |
2190 | /* see do_nanosleep */ | |
2191 | hrtimer_init_sleeper(&t, current); | |
2192 | do { | |
2193 | set_current_state(TASK_INTERRUPTIBLE); | |
2194 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2195 | if (!hrtimer_active(&t.timer)) | |
2196 | t.task = NULL; | |
2197 | ||
2198 | if (likely(t.task)) | |
1da177e4 | 2199 | schedule(); |
1da177e4 | 2200 | |
2bc481cf SH |
2201 | hrtimer_cancel(&t.timer); |
2202 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2203 | __set_current_state(TASK_RUNNING); | |
1da177e4 | 2204 | } |
ef87979c SH |
2205 | end_time = ktime_now(); |
2206 | ||
2207 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2208 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2209 | } |
2210 | ||
16dab72f JHS |
2211 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2212 | { | |
a553e4a6 | 2213 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2214 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2215 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2216 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2217 | } | |
2218 | ||
648fda74 | 2219 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2220 | { |
648fda74 | 2221 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2222 | } |
2223 | ||
2224 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2225 | { | |
2226 | int flow = pkt_dev->curfl; | |
2227 | ||
2228 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2229 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2230 | /* reset time */ | |
2231 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2232 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2233 | pkt_dev->curfl += 1; |
2234 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2235 | pkt_dev->curfl = 0; /*reset */ | |
2236 | } | |
2237 | } else { | |
2238 | flow = random32() % pkt_dev->cflows; | |
1211a645 | 2239 | pkt_dev->curfl = flow; |
007a531b | 2240 | |
1211a645 | 2241 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2242 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2243 | pkt_dev->flows[flow].flags = 0; |
2244 | } | |
007a531b JHS |
2245 | } |
2246 | ||
2247 | return pkt_dev->curfl; | |
2248 | } | |
2249 | ||
a553e4a6 JHS |
2250 | |
2251 | #ifdef CONFIG_XFRM | |
2252 | /* If there was already an IPSEC SA, we keep it as is, else | |
2253 | * we go look for it ... | |
2254 | */ | |
bd55775c | 2255 | #define DUMMY_MARK 0 |
fea1ab0f | 2256 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2257 | { |
2258 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2259 | if (!x) { | |
2260 | /*slow path: we dont already have xfrm_state*/ | |
bd55775c | 2261 | x = xfrm_stateonly_find(&init_net, DUMMY_MARK, |
5447c5e4 | 2262 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2263 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2264 | AF_INET, | |
2265 | pkt_dev->ipsmode, | |
2266 | pkt_dev->ipsproto, 0); | |
2267 | if (x) { | |
2268 | pkt_dev->flows[flow].x = x; | |
2269 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2270 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2271 | } |
2272 | ||
2273 | } | |
2274 | } | |
2275 | #endif | |
fd2ea0a7 DM |
2276 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2277 | { | |
e6fce5b9 RO |
2278 | |
2279 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2280 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2281 | ||
896a7cf8 | 2282 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2283 | __u16 t; |
2284 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2285 | t = random32() % | |
2286 | (pkt_dev->queue_map_max - | |
2287 | pkt_dev->queue_map_min + 1) | |
2288 | + pkt_dev->queue_map_min; | |
2289 | } else { | |
2290 | t = pkt_dev->cur_queue_map + 1; | |
2291 | if (t > pkt_dev->queue_map_max) | |
2292 | t = pkt_dev->queue_map_min; | |
2293 | } | |
2294 | pkt_dev->cur_queue_map = t; | |
2295 | } | |
bfdbc0ac | 2296 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2297 | } |
2298 | ||
1da177e4 LT |
2299 | /* Increment/randomize headers according to flags and current values |
2300 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2301 | */ | |
222f1806 LC |
2302 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2303 | { | |
2304 | __u32 imn; | |
2305 | __u32 imx; | |
2306 | int flow = 0; | |
1da177e4 | 2307 | |
007a531b JHS |
2308 | if (pkt_dev->cflows) |
2309 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2310 | |
2311 | /* Deal with source MAC */ | |
222f1806 LC |
2312 | if (pkt_dev->src_mac_count > 1) { |
2313 | __u32 mc; | |
2314 | __u32 tmp; | |
2315 | ||
2316 | if (pkt_dev->flags & F_MACSRC_RND) | |
5fa6fc76 | 2317 | mc = random32() % pkt_dev->src_mac_count; |
222f1806 LC |
2318 | else { |
2319 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2320 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2321 | pkt_dev->src_mac_count) |
2322 | pkt_dev->cur_src_mac_offset = 0; | |
2323 | } | |
2324 | ||
2325 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2326 | pkt_dev->hh[11] = tmp; | |
2327 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2328 | pkt_dev->hh[10] = tmp; | |
2329 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2330 | pkt_dev->hh[9] = tmp; | |
2331 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2332 | pkt_dev->hh[8] = tmp; | |
2333 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2334 | pkt_dev->hh[7] = tmp; | |
2335 | } | |
2336 | ||
2337 | /* Deal with Destination MAC */ | |
2338 | if (pkt_dev->dst_mac_count > 1) { | |
2339 | __u32 mc; | |
2340 | __u32 tmp; | |
2341 | ||
2342 | if (pkt_dev->flags & F_MACDST_RND) | |
5fa6fc76 | 2343 | mc = random32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2344 | |
2345 | else { | |
2346 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2347 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2348 | pkt_dev->dst_mac_count) { |
2349 | pkt_dev->cur_dst_mac_offset = 0; | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2354 | pkt_dev->hh[5] = tmp; | |
2355 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2356 | pkt_dev->hh[4] = tmp; | |
2357 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2358 | pkt_dev->hh[3] = tmp; | |
2359 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2360 | pkt_dev->hh[2] = tmp; | |
2361 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2362 | pkt_dev->hh[1] = tmp; | |
2363 | } | |
2364 | ||
ca6549af SW |
2365 | if (pkt_dev->flags & F_MPLS_RND) { |
2366 | unsigned i; | |
e71a4783 | 2367 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2368 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2369 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
5fa6fc76 | 2370 | ((__force __be32)random32() & |
ca6549af SW |
2371 | htonl(0x000fffff)); |
2372 | } | |
2373 | ||
34954ddc | 2374 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
5fa6fc76 | 2375 | pkt_dev->vlan_id = random32() & (4096-1); |
34954ddc FF |
2376 | } |
2377 | ||
2378 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
5fa6fc76 | 2379 | pkt_dev->svlan_id = random32() & (4096 - 1); |
34954ddc FF |
2380 | } |
2381 | ||
222f1806 LC |
2382 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2383 | if (pkt_dev->flags & F_UDPSRC_RND) | |
5fa6fc76 SH |
2384 | pkt_dev->cur_udp_src = random32() % |
2385 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2386 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2387 | |
2388 | else { | |
1da177e4 LT |
2389 | pkt_dev->cur_udp_src++; |
2390 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2391 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2392 | } |
2393 | } | |
2394 | ||
2395 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2396 | if (pkt_dev->flags & F_UDPDST_RND) { | |
5fa6fc76 SH |
2397 | pkt_dev->cur_udp_dst = random32() % |
2398 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2399 | + pkt_dev->udp_dst_min; | |
222f1806 | 2400 | } else { |
1da177e4 | 2401 | pkt_dev->cur_udp_dst++; |
222f1806 | 2402 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2403 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2404 | } |
2405 | } | |
1da177e4 LT |
2406 | |
2407 | if (!(pkt_dev->flags & F_IPV6)) { | |
2408 | ||
63adc6fb SH |
2409 | imn = ntohl(pkt_dev->saddr_min); |
2410 | imx = ntohl(pkt_dev->saddr_max); | |
2411 | if (imn < imx) { | |
1da177e4 | 2412 | __u32 t; |
222f1806 | 2413 | if (pkt_dev->flags & F_IPSRC_RND) |
5fa6fc76 | 2414 | t = random32() % (imx - imn) + imn; |
1da177e4 LT |
2415 | else { |
2416 | t = ntohl(pkt_dev->cur_saddr); | |
2417 | t++; | |
63adc6fb | 2418 | if (t > imx) |
1da177e4 | 2419 | t = imn; |
63adc6fb | 2420 | |
1da177e4 LT |
2421 | } |
2422 | pkt_dev->cur_saddr = htonl(t); | |
2423 | } | |
222f1806 | 2424 | |
007a531b | 2425 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2426 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2427 | } else { | |
252e3346 AV |
2428 | imn = ntohl(pkt_dev->daddr_min); |
2429 | imx = ntohl(pkt_dev->daddr_max); | |
2430 | if (imn < imx) { | |
1da177e4 | 2431 | __u32 t; |
252e3346 | 2432 | __be32 s; |
1da177e4 LT |
2433 | if (pkt_dev->flags & F_IPDST_RND) { |
2434 | ||
5fa6fc76 | 2435 | t = random32() % (imx - imn) + imn; |
252e3346 | 2436 | s = htonl(t); |
1da177e4 | 2437 | |
21cf2253 JP |
2438 | while (ipv4_is_loopback(s) || |
2439 | ipv4_is_multicast(s) || | |
1e637c74 | 2440 | ipv4_is_lbcast(s) || |
21cf2253 JP |
2441 | ipv4_is_zeronet(s) || |
2442 | ipv4_is_local_multicast(s)) { | |
5fa6fc76 | 2443 | t = random32() % (imx - imn) + imn; |
252e3346 | 2444 | s = htonl(t); |
1da177e4 | 2445 | } |
252e3346 AV |
2446 | pkt_dev->cur_daddr = s; |
2447 | } else { | |
1da177e4 LT |
2448 | t = ntohl(pkt_dev->cur_daddr); |
2449 | t++; | |
2450 | if (t > imx) { | |
2451 | t = imn; | |
2452 | } | |
2453 | pkt_dev->cur_daddr = htonl(t); | |
2454 | } | |
2455 | } | |
222f1806 | 2456 | if (pkt_dev->cflows) { |
007a531b | 2457 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2458 | pkt_dev->flows[flow].cur_daddr = |
2459 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2460 | #ifdef CONFIG_XFRM |
2461 | if (pkt_dev->flags & F_IPSEC_ON) | |
2462 | get_ipsec_sa(pkt_dev, flow); | |
2463 | #endif | |
1da177e4 LT |
2464 | pkt_dev->nflows++; |
2465 | } | |
2466 | } | |
222f1806 LC |
2467 | } else { /* IPV6 * */ |
2468 | ||
2469 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2470 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2471 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2472 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
1da177e4 LT |
2473 | else { |
2474 | int i; | |
2475 | ||
2476 | /* Only random destinations yet */ | |
2477 | ||
222f1806 | 2478 | for (i = 0; i < 4; i++) { |
1da177e4 | 2479 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
5fa6fc76 | 2480 | (((__force __be32)random32() | |
222f1806 LC |
2481 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2482 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2483 | } |
222f1806 | 2484 | } |
1da177e4 LT |
2485 | } |
2486 | ||
222f1806 LC |
2487 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2488 | __u32 t; | |
2489 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
5fa6fc76 SH |
2490 | t = random32() % |
2491 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2492 | + pkt_dev->min_pkt_size; | |
222f1806 | 2493 | } else { |
1da177e4 | 2494 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2495 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2496 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2497 | } |
2498 | pkt_dev->cur_pkt_size = t; | |
2499 | } | |
1da177e4 | 2500 | |
fd2ea0a7 | 2501 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2502 | |
1da177e4 LT |
2503 | pkt_dev->flows[flow].count++; |
2504 | } | |
2505 | ||
a553e4a6 JHS |
2506 | |
2507 | #ifdef CONFIG_XFRM | |
2508 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2509 | { | |
2510 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2511 | int err = 0; | |
2512 | struct iphdr *iph; | |
2513 | ||
2514 | if (!x) | |
2515 | return 0; | |
2516 | /* XXX: we dont support tunnel mode for now until | |
2517 | * we resolve the dst issue */ | |
2518 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2519 | return 0; | |
2520 | ||
2521 | spin_lock(&x->lock); | |
2522 | iph = ip_hdr(skb); | |
2523 | ||
13996378 | 2524 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2525 | if (err) |
2526 | goto error; | |
2527 | err = x->type->output(x, skb); | |
2528 | if (err) | |
2529 | goto error; | |
2530 | ||
63adc6fb | 2531 | x->curlft.bytes += skb->len; |
a553e4a6 | 2532 | x->curlft.packets++; |
a553e4a6 JHS |
2533 | error: |
2534 | spin_unlock(&x->lock); | |
2535 | return err; | |
2536 | } | |
2537 | ||
475ac1e4 | 2538 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2539 | { |
2540 | if (pkt_dev->cflows) { | |
2541 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2542 | int i; |
2543 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2544 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2545 | if (x) { | |
2546 | xfrm_state_put(x); | |
2547 | pkt_dev->flows[i].x = NULL; | |
2548 | } | |
2549 | } | |
2550 | } | |
2551 | } | |
2552 | ||
475ac1e4 | 2553 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2554 | struct sk_buff *skb, __be16 protocol) |
2555 | { | |
2556 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2557 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2558 | int nhead = 0; | |
2559 | if (x) { | |
2560 | int ret; | |
2561 | __u8 *eth; | |
2562 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2563 | if (nhead > 0) { |
a553e4a6 JHS |
2564 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2565 | if (ret < 0) { | |
f9467eae JP |
2566 | pr_err("Error expanding ipsec packet %d\n", |
2567 | ret); | |
b4bb4ac8 | 2568 | goto err; |
a553e4a6 JHS |
2569 | } |
2570 | } | |
2571 | ||
2572 | /* ipsec is not expecting ll header */ | |
2573 | skb_pull(skb, ETH_HLEN); | |
2574 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2575 | if (ret) { | |
f9467eae | 2576 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2577 | goto err; |
a553e4a6 JHS |
2578 | } |
2579 | /* restore ll */ | |
2580 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2581 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2582 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2583 | } |
2584 | } | |
2585 | return 1; | |
b4bb4ac8 IJ |
2586 | err: |
2587 | kfree_skb(skb); | |
2588 | return 0; | |
a553e4a6 JHS |
2589 | } |
2590 | #endif | |
2591 | ||
ca6549af SW |
2592 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2593 | { | |
2594 | unsigned i; | |
63adc6fb | 2595 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2596 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2597 | |
ca6549af SW |
2598 | mpls--; |
2599 | *mpls |= MPLS_STACK_BOTTOM; | |
2600 | } | |
2601 | ||
0f37c605 AV |
2602 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2603 | unsigned int prio) | |
2604 | { | |
2605 | return htons(id | (cfi << 12) | (prio << 13)); | |
2606 | } | |
2607 | ||
222f1806 LC |
2608 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2609 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2610 | { |
2611 | struct sk_buff *skb = NULL; | |
2612 | __u8 *eth; | |
2613 | struct udphdr *udph; | |
2614 | int datalen, iplen; | |
2615 | struct iphdr *iph; | |
222f1806 | 2616 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2617 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2618 | __be32 *mpls; |
34954ddc FF |
2619 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2620 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2621 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2622 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2623 | u16 queue_map; |
ca6549af SW |
2624 | |
2625 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2626 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2627 | |
34954ddc | 2628 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2629 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2630 | |
64053bee RO |
2631 | /* Update any of the values, used when we're incrementing various |
2632 | * fields. | |
2633 | */ | |
2634 | mod_cur_headers(pkt_dev); | |
eb589063 | 2635 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2636 | |
7ac5459e | 2637 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2638 | |
2639 | if (pkt_dev->flags & F_NODE) { | |
2640 | int node; | |
2641 | ||
2642 | if (pkt_dev->node >= 0) | |
2643 | node = pkt_dev->node; | |
2644 | else | |
2645 | node = numa_node_id(); | |
2646 | ||
2647 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2648 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2649 | if (likely(skb)) { | |
2650 | skb_reserve(skb, NET_SKB_PAD); | |
2651 | skb->dev = odev; | |
2652 | } | |
2653 | } | |
2654 | else | |
2655 | skb = __netdev_alloc_skb(odev, | |
2656 | pkt_dev->cur_pkt_size + 64 | |
2657 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2658 | ||
1da177e4 LT |
2659 | if (!skb) { |
2660 | sprintf(pkt_dev->result, "No memory"); | |
2661 | return NULL; | |
2662 | } | |
2663 | ||
7ac5459e | 2664 | skb_reserve(skb, datalen); |
1da177e4 LT |
2665 | |
2666 | /* Reserve for ethernet and IP header */ | |
2667 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2668 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2669 | if (pkt_dev->nr_labels) | |
2670 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2671 | |
2672 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2673 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2674 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2675 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2676 | pkt_dev->svlan_cfi, | |
2677 | pkt_dev->svlan_p); | |
34954ddc | 2678 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2679 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2680 | } |
2681 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2682 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2683 | pkt_dev->vlan_cfi, | |
2684 | pkt_dev->vlan_p); | |
34954ddc | 2685 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2686 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2687 | } |
2688 | ||
27a884dc | 2689 | skb->network_header = skb->tail; |
b0e380b1 | 2690 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2691 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2692 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2693 | skb->priority = pkt_dev->skb_priority; |
2694 | ||
ddc7b8e3 ACM |
2695 | iph = ip_hdr(skb); |
2696 | udph = udp_hdr(skb); | |
1da177e4 | 2697 | |
1da177e4 | 2698 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2699 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2700 | |
ca6549af SW |
2701 | /* Eth + IPh + UDPh + mpls */ |
2702 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2703 | pkt_dev->pkt_overhead; |
222f1806 | 2704 | if (datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2705 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2706 | |
1da177e4 LT |
2707 | udph->source = htons(pkt_dev->cur_udp_src); |
2708 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2709 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2710 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2711 | |
2712 | iph->ihl = 5; | |
2713 | iph->version = 4; | |
2714 | iph->ttl = 32; | |
1ca7768c | 2715 | iph->tos = pkt_dev->tos; |
222f1806 | 2716 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2717 | iph->saddr = pkt_dev->cur_saddr; |
2718 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2719 | iph->id = htons(pkt_dev->ip_id); |
2720 | pkt_dev->ip_id++; | |
1da177e4 LT |
2721 | iph->frag_off = 0; |
2722 | iplen = 20 + 8 + datalen; | |
2723 | iph->tot_len = htons(iplen); | |
2724 | iph->check = 0; | |
222f1806 | 2725 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2726 | skb->protocol = protocol; |
b0e380b1 | 2727 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2728 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2729 | skb->dev = odev; |
2730 | skb->pkt_type = PACKET_HOST; | |
2731 | ||
66ed1e5e | 2732 | if (pkt_dev->nfrags <= 0) { |
222f1806 | 2733 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); |
66ed1e5e ED |
2734 | memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr)); |
2735 | } else { | |
1da177e4 | 2736 | int frags = pkt_dev->nfrags; |
66ed1e5e | 2737 | int i, len; |
1da177e4 | 2738 | |
222f1806 LC |
2739 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
2740 | ||
1da177e4 LT |
2741 | if (frags > MAX_SKB_FRAGS) |
2742 | frags = MAX_SKB_FRAGS; | |
222f1806 | 2743 | if (datalen > frags * PAGE_SIZE) { |
66ed1e5e ED |
2744 | len = datalen - frags * PAGE_SIZE; |
2745 | memset(skb_put(skb, len), 0, len); | |
222f1806 | 2746 | datalen = frags * PAGE_SIZE; |
1da177e4 LT |
2747 | } |
2748 | ||
2749 | i = 0; | |
2750 | while (datalen > 0) { | |
66ed1e5e | 2751 | struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0); |
1da177e4 LT |
2752 | skb_shinfo(skb)->frags[i].page = page; |
2753 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
2754 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 2755 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
2756 | datalen -= skb_shinfo(skb)->frags[i].size; |
2757 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2758 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2759 | i++; | |
2760 | skb_shinfo(skb)->nr_frags = i; | |
2761 | } | |
2762 | ||
2763 | while (i < frags) { | |
2764 | int rem; | |
2765 | ||
2766 | if (i == 0) | |
2767 | break; | |
2768 | ||
2769 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
2770 | if (rem == 0) | |
2771 | break; | |
2772 | ||
2773 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
2774 | ||
222f1806 LC |
2775 | skb_shinfo(skb)->frags[i] = |
2776 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 2777 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
2778 | skb_shinfo(skb)->frags[i].page = |
2779 | skb_shinfo(skb)->frags[i - 1].page; | |
2780 | skb_shinfo(skb)->frags[i].page_offset += | |
2781 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
2782 | skb_shinfo(skb)->frags[i].size = rem; |
2783 | i++; | |
2784 | skb_shinfo(skb)->nr_frags = i; | |
2785 | } | |
2786 | } | |
2787 | ||
63adc6fb SH |
2788 | /* Stamp the time, and sequence number, |
2789 | * convert them to network byte order | |
2790 | */ | |
222f1806 LC |
2791 | if (pgh) { |
2792 | struct timeval timestamp; | |
2793 | ||
2794 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2795 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2796 | ||
2797 | do_gettimeofday(×tamp); | |
2798 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2799 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2800 | } | |
1da177e4 | 2801 | |
a553e4a6 JHS |
2802 | #ifdef CONFIG_XFRM |
2803 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2804 | return NULL; | |
2805 | #endif | |
2806 | ||
1da177e4 LT |
2807 | return skb; |
2808 | } | |
2809 | ||
2810 | /* | |
4ec93edb | 2811 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
1da177e4 LT |
2812 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
2813 | * | |
4ec93edb | 2814 | * Slightly modified for kernel. |
1da177e4 LT |
2815 | * Should be candidate for net/ipv4/utils.c |
2816 | * --ro | |
2817 | */ | |
2818 | ||
222f1806 | 2819 | static unsigned int scan_ip6(const char *s, char ip[16]) |
1da177e4 LT |
2820 | { |
2821 | unsigned int i; | |
222f1806 | 2822 | unsigned int len = 0; |
1da177e4 LT |
2823 | unsigned long u; |
2824 | char suffix[16]; | |
222f1806 LC |
2825 | unsigned int prefixlen = 0; |
2826 | unsigned int suffixlen = 0; | |
252e3346 | 2827 | __be32 tmp; |
cfcabdcc | 2828 | char *pos; |
1da177e4 | 2829 | |
222f1806 LC |
2830 | for (i = 0; i < 16; i++) |
2831 | ip[i] = 0; | |
1da177e4 LT |
2832 | |
2833 | for (;;) { | |
2834 | if (*s == ':') { | |
2835 | len++; | |
222f1806 LC |
2836 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
2837 | s += 2; | |
1da177e4 LT |
2838 | len++; |
2839 | break; | |
2840 | } | |
2841 | s++; | |
2842 | } | |
1da177e4 | 2843 | |
cfcabdcc SH |
2844 | u = simple_strtoul(s, &pos, 16); |
2845 | i = pos - s; | |
222f1806 LC |
2846 | if (!i) |
2847 | return 0; | |
2848 | if (prefixlen == 12 && s[i] == '.') { | |
1da177e4 LT |
2849 | |
2850 | /* the last 4 bytes may be written as IPv4 address */ | |
2851 | ||
2852 | tmp = in_aton(s); | |
222f1806 LC |
2853 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); |
2854 | return i + len; | |
1da177e4 LT |
2855 | } |
2856 | ip[prefixlen++] = (u >> 8); | |
2857 | ip[prefixlen++] = (u & 255); | |
222f1806 LC |
2858 | s += i; |
2859 | len += i; | |
2860 | if (prefixlen == 16) | |
1da177e4 LT |
2861 | return len; |
2862 | } | |
2863 | ||
2864 | /* part 2, after "::" */ | |
2865 | for (;;) { | |
2866 | if (*s == ':') { | |
222f1806 | 2867 | if (suffixlen == 0) |
1da177e4 LT |
2868 | break; |
2869 | s++; | |
2870 | len++; | |
222f1806 | 2871 | } else if (suffixlen != 0) |
1da177e4 | 2872 | break; |
cfcabdcc SH |
2873 | |
2874 | u = simple_strtol(s, &pos, 16); | |
2875 | i = pos - s; | |
1da177e4 | 2876 | if (!i) { |
222f1806 LC |
2877 | if (*s) |
2878 | len--; | |
1da177e4 LT |
2879 | break; |
2880 | } | |
222f1806 | 2881 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { |
1da177e4 | 2882 | tmp = in_aton(s); |
222f1806 LC |
2883 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, |
2884 | sizeof(tmp)); | |
2885 | suffixlen += 4; | |
2886 | len += strlen(s); | |
1da177e4 LT |
2887 | break; |
2888 | } | |
2889 | suffix[suffixlen++] = (u >> 8); | |
2890 | suffix[suffixlen++] = (u & 255); | |
222f1806 LC |
2891 | s += i; |
2892 | len += i; | |
2893 | if (prefixlen + suffixlen == 16) | |
1da177e4 LT |
2894 | break; |
2895 | } | |
222f1806 LC |
2896 | for (i = 0; i < suffixlen; i++) |
2897 | ip[16 - suffixlen + i] = suffix[i]; | |
1da177e4 LT |
2898 | return len; |
2899 | } | |
2900 | ||
222f1806 LC |
2901 | static char tohex(char hexdigit) |
2902 | { | |
2903 | return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0'; | |
1da177e4 LT |
2904 | } |
2905 | ||
222f1806 LC |
2906 | static int fmt_xlong(char *s, unsigned int i) |
2907 | { | |
2908 | char *bak = s; | |
2909 | *s = tohex((i >> 12) & 0xf); | |
2910 | if (s != bak || *s != '0') | |
2911 | ++s; | |
2912 | *s = tohex((i >> 8) & 0xf); | |
2913 | if (s != bak || *s != '0') | |
2914 | ++s; | |
2915 | *s = tohex((i >> 4) & 0xf); | |
2916 | if (s != bak || *s != '0') | |
2917 | ++s; | |
2918 | *s = tohex(i & 0xf); | |
2919 | return s - bak + 1; | |
1da177e4 LT |
2920 | } |
2921 | ||
222f1806 LC |
2922 | static unsigned int fmt_ip6(char *s, const char ip[16]) |
2923 | { | |
1da177e4 LT |
2924 | unsigned int len; |
2925 | unsigned int i; | |
2926 | unsigned int temp; | |
2927 | unsigned int compressing; | |
2928 | int j; | |
2929 | ||
222f1806 LC |
2930 | len = 0; |
2931 | compressing = 0; | |
2932 | for (j = 0; j < 16; j += 2) { | |
1da177e4 LT |
2933 | |
2934 | #ifdef V4MAPPEDPREFIX | |
222f1806 LC |
2935 | if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) { |
2936 | inet_ntoa_r(*(struct in_addr *)(ip + 12), s); | |
2937 | temp = strlen(s); | |
2938 | return len + temp; | |
1da177e4 LT |
2939 | } |
2940 | #endif | |
222f1806 LC |
2941 | temp = ((unsigned long)(unsigned char)ip[j] << 8) + |
2942 | (unsigned long)(unsigned char)ip[j + 1]; | |
1da177e4 LT |
2943 | if (temp == 0) { |
2944 | if (!compressing) { | |
222f1806 LC |
2945 | compressing = 1; |
2946 | if (j == 0) { | |
2947 | *s++ = ':'; | |
2948 | ++len; | |
1da177e4 LT |
2949 | } |
2950 | } | |
2951 | } else { | |
2952 | if (compressing) { | |
222f1806 LC |
2953 | compressing = 0; |
2954 | *s++ = ':'; | |
2955 | ++len; | |
1da177e4 | 2956 | } |
222f1806 LC |
2957 | i = fmt_xlong(s, temp); |
2958 | len += i; | |
2959 | s += i; | |
2960 | if (j < 14) { | |
1da177e4 LT |
2961 | *s++ = ':'; |
2962 | ++len; | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | if (compressing) { | |
222f1806 LC |
2967 | *s++ = ':'; |
2968 | ++len; | |
1da177e4 | 2969 | } |
222f1806 | 2970 | *s = 0; |
1da177e4 LT |
2971 | return len; |
2972 | } | |
2973 | ||
222f1806 LC |
2974 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2975 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2976 | { |
2977 | struct sk_buff *skb = NULL; | |
2978 | __u8 *eth; | |
2979 | struct udphdr *udph; | |
2980 | int datalen; | |
2981 | struct ipv6hdr *iph; | |
222f1806 | 2982 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2983 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2984 | __be32 *mpls; |
34954ddc FF |
2985 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2986 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2987 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2988 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2989 | u16 queue_map; |
ca6549af SW |
2990 | |
2991 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2992 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2993 | |
34954ddc | 2994 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2995 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2996 | |
64053bee RO |
2997 | /* Update any of the values, used when we're incrementing various |
2998 | * fields. | |
2999 | */ | |
3000 | mod_cur_headers(pkt_dev); | |
eb589063 | 3001 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 3002 | |
e470757d SH |
3003 | skb = __netdev_alloc_skb(odev, |
3004 | pkt_dev->cur_pkt_size + 64 | |
3005 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
3006 | if (!skb) { |
3007 | sprintf(pkt_dev->result, "No memory"); | |
3008 | return NULL; | |
3009 | } | |
3010 | ||
3011 | skb_reserve(skb, 16); | |
3012 | ||
3013 | /* Reserve for ethernet and IP header */ | |
3014 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
3015 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
3016 | if (pkt_dev->nr_labels) | |
3017 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
3018 | |
3019 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 3020 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 3021 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
3022 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
3023 | pkt_dev->svlan_cfi, | |
3024 | pkt_dev->svlan_p); | |
34954ddc | 3025 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3026 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
3027 | } |
3028 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
3029 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
3030 | pkt_dev->vlan_cfi, | |
3031 | pkt_dev->vlan_p); | |
34954ddc | 3032 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3033 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
3034 | } |
3035 | ||
27a884dc | 3036 | skb->network_header = skb->tail; |
b0e380b1 | 3037 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 3038 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 3039 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 3040 | skb->priority = pkt_dev->skb_priority; |
ddc7b8e3 ACM |
3041 | iph = ipv6_hdr(skb); |
3042 | udph = udp_hdr(skb); | |
1da177e4 | 3043 | |
1da177e4 | 3044 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 3045 | *(__be16 *) ð[12] = protocol; |
64053bee | 3046 | |
ca6549af SW |
3047 | /* Eth + IPh + UDPh + mpls */ |
3048 | datalen = pkt_dev->cur_pkt_size - 14 - | |
3049 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 3050 | pkt_dev->pkt_overhead; |
1da177e4 | 3051 | |
222f1806 | 3052 | if (datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 LT |
3053 | datalen = sizeof(struct pktgen_hdr); |
3054 | if (net_ratelimit()) | |
f9467eae | 3055 | pr_info("increased datalen to %d\n", datalen); |
1da177e4 LT |
3056 | } |
3057 | ||
3058 | udph->source = htons(pkt_dev->cur_udp_src); | |
3059 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
3060 | udph->len = htons(datalen + sizeof(struct udphdr)); |
3061 | udph->check = 0; /* No checksum */ | |
1da177e4 | 3062 | |
d5f1ce9a | 3063 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 3064 | |
1ca7768c FF |
3065 | if (pkt_dev->traffic_class) { |
3066 | /* Version + traffic class + flow (0) */ | |
252e3346 | 3067 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
3068 | } |
3069 | ||
1da177e4 LT |
3070 | iph->hop_limit = 32; |
3071 | ||
3072 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
3073 | iph->nexthdr = IPPROTO_UDP; | |
3074 | ||
3075 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); | |
3076 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); | |
3077 | ||
b0e380b1 | 3078 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 3079 | pkt_dev->pkt_overhead); |
ca6549af | 3080 | skb->protocol = protocol; |
1da177e4 LT |
3081 | skb->dev = odev; |
3082 | skb->pkt_type = PACKET_HOST; | |
3083 | ||
222f1806 LC |
3084 | if (pkt_dev->nfrags <= 0) |
3085 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); | |
1da177e4 LT |
3086 | else { |
3087 | int frags = pkt_dev->nfrags; | |
3088 | int i; | |
3089 | ||
222f1806 LC |
3090 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
3091 | ||
1da177e4 LT |
3092 | if (frags > MAX_SKB_FRAGS) |
3093 | frags = MAX_SKB_FRAGS; | |
222f1806 LC |
3094 | if (datalen > frags * PAGE_SIZE) { |
3095 | skb_put(skb, datalen - frags * PAGE_SIZE); | |
3096 | datalen = frags * PAGE_SIZE; | |
1da177e4 LT |
3097 | } |
3098 | ||
3099 | i = 0; | |
3100 | while (datalen > 0) { | |
3101 | struct page *page = alloc_pages(GFP_KERNEL, 0); | |
3102 | skb_shinfo(skb)->frags[i].page = page; | |
3103 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
3104 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 3105 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
3106 | datalen -= skb_shinfo(skb)->frags[i].size; |
3107 | skb->len += skb_shinfo(skb)->frags[i].size; | |
3108 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
3109 | i++; | |
3110 | skb_shinfo(skb)->nr_frags = i; | |
3111 | } | |
3112 | ||
3113 | while (i < frags) { | |
3114 | int rem; | |
3115 | ||
3116 | if (i == 0) | |
3117 | break; | |
3118 | ||
3119 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
3120 | if (rem == 0) | |
3121 | break; | |
3122 | ||
3123 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
3124 | ||
222f1806 LC |
3125 | skb_shinfo(skb)->frags[i] = |
3126 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 3127 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
3128 | skb_shinfo(skb)->frags[i].page = |
3129 | skb_shinfo(skb)->frags[i - 1].page; | |
3130 | skb_shinfo(skb)->frags[i].page_offset += | |
3131 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
3132 | skb_shinfo(skb)->frags[i].size = rem; |
3133 | i++; | |
3134 | skb_shinfo(skb)->nr_frags = i; | |
3135 | } | |
3136 | } | |
3137 | ||
63adc6fb SH |
3138 | /* Stamp the time, and sequence number, |
3139 | * convert them to network byte order | |
3140 | * should we update cloned packets too ? | |
3141 | */ | |
222f1806 LC |
3142 | if (pgh) { |
3143 | struct timeval timestamp; | |
3144 | ||
3145 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
3146 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
3147 | ||
3148 | do_gettimeofday(×tamp); | |
3149 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
3150 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
3151 | } | |
34954ddc | 3152 | /* pkt_dev->seq_num++; FF: you really mean this? */ |
222f1806 | 3153 | |
1da177e4 LT |
3154 | return skb; |
3155 | } | |
3156 | ||
475ac1e4 SH |
3157 | static struct sk_buff *fill_packet(struct net_device *odev, |
3158 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3159 | { |
222f1806 | 3160 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3161 | return fill_packet_ipv6(odev, pkt_dev); |
3162 | else | |
3163 | return fill_packet_ipv4(odev, pkt_dev); | |
3164 | } | |
3165 | ||
222f1806 | 3166 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3167 | { |
222f1806 LC |
3168 | pkt_dev->seq_num = 1; |
3169 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3170 | pkt_dev->sofar = 0; |
222f1806 LC |
3171 | pkt_dev->tx_bytes = 0; |
3172 | pkt_dev->errors = 0; | |
1da177e4 LT |
3173 | } |
3174 | ||
3175 | /* Set up structure for sending pkts, clear counters */ | |
3176 | ||
3177 | static void pktgen_run(struct pktgen_thread *t) | |
3178 | { | |
c26a8016 | 3179 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3180 | int started = 0; |
3181 | ||
f9467eae | 3182 | func_enter(); |
1da177e4 LT |
3183 | |
3184 | if_lock(t); | |
c26a8016 | 3185 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
3186 | |
3187 | /* | |
3188 | * setup odev and create initial packet. | |
3189 | */ | |
3190 | pktgen_setup_inject(pkt_dev); | |
3191 | ||
222f1806 | 3192 | if (pkt_dev->odev) { |
1da177e4 | 3193 | pktgen_clear_counters(pkt_dev); |
222f1806 | 3194 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3195 | pkt_dev->skb = NULL; |
fd29cf72 SH |
3196 | pkt_dev->started_at = |
3197 | pkt_dev->next_tx = ktime_now(); | |
3198 | ||
16dab72f | 3199 | set_pkt_overhead(pkt_dev); |
222f1806 | 3200 | |
1da177e4 LT |
3201 | strcpy(pkt_dev->result, "Starting"); |
3202 | started++; | |
222f1806 | 3203 | } else |
1da177e4 LT |
3204 | strcpy(pkt_dev->result, "Error starting"); |
3205 | } | |
3206 | if_unlock(t); | |
222f1806 LC |
3207 | if (started) |
3208 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3209 | } |
3210 | ||
3211 | static void pktgen_stop_all_threads_ifs(void) | |
3212 | { | |
cdcdbe0b | 3213 | struct pktgen_thread *t; |
1da177e4 | 3214 | |
f9467eae | 3215 | func_enter(); |
1da177e4 | 3216 | |
6146e6a4 | 3217 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3218 | |
3219 | list_for_each_entry(t, &pktgen_threads, th_list) | |
95ed63f7 | 3220 | t->control |= T_STOP; |
cdcdbe0b | 3221 | |
6146e6a4 | 3222 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3223 | } |
3224 | ||
648fda74 | 3225 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3226 | { |
648fda74 | 3227 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3228 | |
c26a8016 | 3229 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
3230 | if (pkt_dev->running) |
3231 | return 1; | |
3232 | return 0; | |
1da177e4 LT |
3233 | } |
3234 | ||
222f1806 | 3235 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3236 | { |
222f1806 | 3237 | if_lock(t); |
1da177e4 | 3238 | |
222f1806 | 3239 | while (thread_is_running(t)) { |
1da177e4 | 3240 | |
222f1806 | 3241 | if_unlock(t); |
1da177e4 | 3242 | |
222f1806 | 3243 | msleep_interruptible(100); |
1da177e4 | 3244 | |
222f1806 LC |
3245 | if (signal_pending(current)) |
3246 | goto signal; | |
3247 | if_lock(t); | |
3248 | } | |
3249 | if_unlock(t); | |
3250 | return 1; | |
3251 | signal: | |
3252 | return 0; | |
1da177e4 LT |
3253 | } |
3254 | ||
3255 | static int pktgen_wait_all_threads_run(void) | |
3256 | { | |
cdcdbe0b | 3257 | struct pktgen_thread *t; |
1da177e4 | 3258 | int sig = 1; |
222f1806 | 3259 | |
6146e6a4 | 3260 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3261 | |
3262 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1da177e4 | 3263 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3264 | if (sig == 0) |
3265 | break; | |
1da177e4 | 3266 | } |
cdcdbe0b LC |
3267 | |
3268 | if (sig == 0) | |
3269 | list_for_each_entry(t, &pktgen_threads, th_list) | |
1da177e4 | 3270 | t->control |= (T_STOP); |
cdcdbe0b | 3271 | |
6146e6a4 | 3272 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3273 | return sig; |
3274 | } | |
3275 | ||
3276 | static void pktgen_run_all_threads(void) | |
3277 | { | |
cdcdbe0b | 3278 | struct pktgen_thread *t; |
1da177e4 | 3279 | |
f9467eae | 3280 | func_enter(); |
1da177e4 | 3281 | |
6146e6a4 | 3282 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3283 | |
cdcdbe0b | 3284 | list_for_each_entry(t, &pktgen_threads, th_list) |
1da177e4 | 3285 | t->control |= (T_RUN); |
cdcdbe0b | 3286 | |
6146e6a4 | 3287 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3288 | |
63adc6fb SH |
3289 | /* Propagate thread->control */ |
3290 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3291 | |
1da177e4 LT |
3292 | pktgen_wait_all_threads_run(); |
3293 | } | |
3294 | ||
eb37b41c JB |
3295 | static void pktgen_reset_all_threads(void) |
3296 | { | |
3297 | struct pktgen_thread *t; | |
3298 | ||
f9467eae | 3299 | func_enter(); |
eb37b41c JB |
3300 | |
3301 | mutex_lock(&pktgen_thread_lock); | |
3302 | ||
3303 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3304 | t->control |= (T_REMDEVALL); | |
3305 | ||
3306 | mutex_unlock(&pktgen_thread_lock); | |
3307 | ||
63adc6fb SH |
3308 | /* Propagate thread->control */ |
3309 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c JB |
3310 | |
3311 | pktgen_wait_all_threads_run(); | |
3312 | } | |
3313 | ||
1da177e4 LT |
3314 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3315 | { | |
fd29cf72 | 3316 | __u64 bps, mbps, pps; |
222f1806 | 3317 | char *p = pkt_dev->result; |
fd29cf72 SH |
3318 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3319 | pkt_dev->started_at); | |
3320 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3321 | ||
3322 | p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n", | |
3323 | (unsigned long long)ktime_to_us(elapsed), | |
3324 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3325 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3326 | (unsigned long long)pkt_dev->sofar, |
3327 | pkt_dev->cur_pkt_size, nr_frags); | |
3328 | ||
fd29cf72 SH |
3329 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3330 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3331 | |
3332 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3333 | ||
3334 | mbps = bps; | |
3335 | do_div(mbps, 1000000); | |
3336 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3337 | (unsigned long long)pps, | |
3338 | (unsigned long long)mbps, | |
3339 | (unsigned long long)bps, | |
3340 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3341 | } |
1da177e4 LT |
3342 | |
3343 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3344 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3345 | { |
222f1806 | 3346 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3347 | |
222f1806 | 3348 | if (!pkt_dev->running) { |
f9467eae JP |
3349 | pr_warning("interface: %s is already stopped\n", |
3350 | pkt_dev->odevname); | |
222f1806 LC |
3351 | return -EINVAL; |
3352 | } | |
1da177e4 | 3353 | |
3bda06a3 SH |
3354 | kfree_skb(pkt_dev->skb); |
3355 | pkt_dev->skb = NULL; | |
fd29cf72 | 3356 | pkt_dev->stopped_at = ktime_now(); |
222f1806 | 3357 | pkt_dev->running = 0; |
1da177e4 | 3358 | |
95ed63f7 | 3359 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3360 | |
222f1806 | 3361 | return 0; |
1da177e4 LT |
3362 | } |
3363 | ||
222f1806 | 3364 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3365 | { |
c26a8016 | 3366 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3367 | |
1da177e4 LT |
3368 | if_lock(t); |
3369 | ||
c26a8016 LC |
3370 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3371 | if (!pkt_dev->running) | |
222f1806 LC |
3372 | continue; |
3373 | if (best == NULL) | |
c26a8016 | 3374 | best = pkt_dev; |
fd29cf72 | 3375 | else if (ktime_lt(pkt_dev->next_tx, best->next_tx)) |
c26a8016 | 3376 | best = pkt_dev; |
1da177e4 LT |
3377 | } |
3378 | if_unlock(t); | |
222f1806 | 3379 | return best; |
1da177e4 LT |
3380 | } |
3381 | ||
222f1806 LC |
3382 | static void pktgen_stop(struct pktgen_thread *t) |
3383 | { | |
c26a8016 | 3384 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3385 | |
f9467eae | 3386 | func_enter(); |
1da177e4 | 3387 | |
222f1806 | 3388 | if_lock(t); |
1da177e4 | 3389 | |
c26a8016 LC |
3390 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3391 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3392 | } |
1da177e4 | 3393 | |
222f1806 | 3394 | if_unlock(t); |
1da177e4 LT |
3395 | } |
3396 | ||
95ed63f7 AK |
3397 | /* |
3398 | * one of our devices needs to be removed - find it | |
3399 | * and remove it | |
3400 | */ | |
3401 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3402 | { | |
c26a8016 LC |
3403 | struct list_head *q, *n; |
3404 | struct pktgen_dev *cur; | |
95ed63f7 | 3405 | |
f9467eae | 3406 | func_enter(); |
95ed63f7 AK |
3407 | |
3408 | if_lock(t); | |
3409 | ||
c26a8016 LC |
3410 | list_for_each_safe(q, n, &t->if_list) { |
3411 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3412 | |
222f1806 LC |
3413 | if (!cur->removal_mark) |
3414 | continue; | |
95ed63f7 | 3415 | |
86dc1ad2 | 3416 | kfree_skb(cur->skb); |
95ed63f7 AK |
3417 | cur->skb = NULL; |
3418 | ||
3419 | pktgen_remove_device(t, cur); | |
3420 | ||
3421 | break; | |
3422 | } | |
3423 | ||
3424 | if_unlock(t); | |
3425 | } | |
3426 | ||
222f1806 | 3427 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3428 | { |
c26a8016 LC |
3429 | struct list_head *q, *n; |
3430 | struct pktgen_dev *cur; | |
222f1806 | 3431 | |
f9467eae JP |
3432 | func_enter(); |
3433 | ||
222f1806 | 3434 | /* Remove all devices, free mem */ |
95ed63f7 | 3435 | |
222f1806 | 3436 | if_lock(t); |
1da177e4 | 3437 | |
c26a8016 LC |
3438 | list_for_each_safe(q, n, &t->if_list) { |
3439 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3440 | |
86dc1ad2 | 3441 | kfree_skb(cur->skb); |
95ed63f7 AK |
3442 | cur->skb = NULL; |
3443 | ||
1da177e4 LT |
3444 | pktgen_remove_device(t, cur); |
3445 | } | |
3446 | ||
222f1806 | 3447 | if_unlock(t); |
1da177e4 LT |
3448 | } |
3449 | ||
222f1806 | 3450 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3451 | { |
222f1806 | 3452 | /* Remove from the thread list */ |
1da177e4 | 3453 | |
ee74baa7 | 3454 | remove_proc_entry(t->tsk->comm, pg_proc_dir); |
1da177e4 | 3455 | |
1da177e4 LT |
3456 | } |
3457 | ||
ef87979c | 3458 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3459 | { |
fd29cf72 | 3460 | ktime_t idle_start = ktime_now(); |
ef87979c SH |
3461 | schedule(); |
3462 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); | |
3463 | } | |
3791decb | 3464 | |
ef87979c SH |
3465 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3466 | { | |
3467 | ktime_t idle_start = ktime_now(); | |
3791decb | 3468 | |
ef87979c SH |
3469 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3470 | if (signal_pending(current)) | |
3471 | break; | |
3472 | ||
3473 | if (need_resched()) | |
3474 | pktgen_resched(pkt_dev); | |
3475 | else | |
3476 | cpu_relax(); | |
3477 | } | |
fd29cf72 | 3478 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); |
3791decb SH |
3479 | } |
3480 | ||
475ac1e4 | 3481 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3482 | { |
00829823 | 3483 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3484 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3485 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3486 | struct netdev_queue *txq; |
fd2ea0a7 | 3487 | u16 queue_map; |
1da177e4 LT |
3488 | int ret; |
3489 | ||
ef87979c SH |
3490 | /* If device is offline, then don't send */ |
3491 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3492 | pktgen_stop_device(pkt_dev); | |
3493 | return; | |
fd2ea0a7 DM |
3494 | } |
3495 | ||
ef87979c SH |
3496 | /* This is max DELAY, this has special meaning of |
3497 | * "never transmit" | |
3498 | */ | |
3499 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
3500 | pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX); | |
3791decb | 3501 | return; |
1da177e4 | 3502 | } |
222f1806 | 3503 | |
ef87979c | 3504 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3505 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3506 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3507 | /* build a new pkt */ | |
3508 | kfree_skb(pkt_dev->skb); | |
3509 | ||
3510 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3511 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3512 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3513 | schedule(); |
3514 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3515 | return; | |
1da177e4 | 3516 | } |
baac8564 | 3517 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3518 | pkt_dev->allocated_skbs++; |
3519 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3520 | } |
95ed63f7 | 3521 | |
ef87979c SH |
3522 | if (pkt_dev->delay && pkt_dev->last_ok) |
3523 | spin(pkt_dev, pkt_dev->next_tx); | |
3524 | ||
fd2ea0a7 DM |
3525 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3526 | txq = netdev_get_tx_queue(odev, queue_map); | |
3527 | ||
3528 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3529 | |
0835acfe | 3530 | if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) { |
ef87979c | 3531 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3532 | pkt_dev->last_ok = 0; |
3533 | goto unlock; | |
3534 | } | |
3535 | atomic_inc(&(pkt_dev->skb->users)); | |
3536 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3537 | |
3538 | switch (ret) { | |
3539 | case NETDEV_TX_OK: | |
3540 | txq_trans_update(txq); | |
3541 | pkt_dev->last_ok = 1; | |
3542 | pkt_dev->sofar++; | |
3543 | pkt_dev->seq_num++; | |
baac8564 | 3544 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3545 | break; |
f466dba1 JF |
3546 | case NET_XMIT_DROP: |
3547 | case NET_XMIT_CN: | |
3548 | case NET_XMIT_POLICED: | |
3549 | /* skb has been consumed */ | |
3550 | pkt_dev->errors++; | |
3551 | break; | |
ef87979c SH |
3552 | default: /* Drivers are not supposed to return other values! */ |
3553 | if (net_ratelimit()) | |
3554 | pr_info("pktgen: %s xmit error: %d\n", | |
593f63b0 | 3555 | pkt_dev->odevname, ret); |
ef87979c SH |
3556 | pkt_dev->errors++; |
3557 | /* fallthru */ | |
3558 | case NETDEV_TX_LOCKED: | |
3559 | case NETDEV_TX_BUSY: | |
3560 | /* Retry it next time */ | |
3561 | atomic_dec(&(pkt_dev->skb->users)); | |
3562 | pkt_dev->last_ok = 0; | |
222f1806 | 3563 | } |
0835acfe | 3564 | unlock: |
fd2ea0a7 | 3565 | __netif_tx_unlock_bh(txq); |
222f1806 | 3566 | |
1da177e4 LT |
3567 | /* If pkt_dev->count is zero, then run forever */ |
3568 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3569 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3570 | |
1da177e4 LT |
3571 | /* Done with this */ |
3572 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3573 | } |
222f1806 | 3574 | } |
1da177e4 | 3575 | |
4ec93edb | 3576 | /* |
1da177e4 LT |
3577 | * Main loop of the thread goes here |
3578 | */ | |
3579 | ||
ee74baa7 | 3580 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3581 | { |
3582 | DEFINE_WAIT(wait); | |
ee74baa7 | 3583 | struct pktgen_thread *t = arg; |
222f1806 | 3584 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3585 | int cpu = t->cpu; |
1da177e4 | 3586 | |
ee74baa7 | 3587 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3588 | |
3589 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3590 | complete(&t->start_done); |
1da177e4 | 3591 | |
f9467eae | 3592 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3593 | |
ee74baa7 | 3594 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3595 | |
83144186 RW |
3596 | set_freezable(); |
3597 | ||
ee74baa7 DM |
3598 | while (!kthread_should_stop()) { |
3599 | pkt_dev = next_to_run(t); | |
1da177e4 | 3600 | |
ef87979c | 3601 | if (unlikely(!pkt_dev && t->control == 0)) { |
551eaff1 ED |
3602 | if (pktgen_exiting) |
3603 | break; | |
ef87979c SH |
3604 | wait_event_interruptible_timeout(t->queue, |
3605 | t->control != 0, | |
3606 | HZ/10); | |
1b3f720b | 3607 | try_to_freeze(); |
ef87979c | 3608 | continue; |
ee74baa7 | 3609 | } |
1da177e4 | 3610 | |
ee74baa7 | 3611 | __set_current_state(TASK_RUNNING); |
222f1806 | 3612 | |
ef87979c | 3613 | if (likely(pkt_dev)) { |
1da177e4 LT |
3614 | pktgen_xmit(pkt_dev); |
3615 | ||
ef87979c SH |
3616 | if (need_resched()) |
3617 | pktgen_resched(pkt_dev); | |
3618 | else | |
3619 | cpu_relax(); | |
3620 | } | |
3621 | ||
222f1806 | 3622 | if (t->control & T_STOP) { |
1da177e4 LT |
3623 | pktgen_stop(t); |
3624 | t->control &= ~(T_STOP); | |
3625 | } | |
3626 | ||
222f1806 | 3627 | if (t->control & T_RUN) { |
1da177e4 LT |
3628 | pktgen_run(t); |
3629 | t->control &= ~(T_RUN); | |
3630 | } | |
3631 | ||
222f1806 | 3632 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3633 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3634 | t->control &= ~(T_REMDEVALL); |
3635 | } | |
3636 | ||
222f1806 | 3637 | if (t->control & T_REMDEV) { |
95ed63f7 | 3638 | pktgen_rem_one_if(t); |
1da177e4 LT |
3639 | t->control &= ~(T_REMDEV); |
3640 | } | |
3641 | ||
09fe3ef4 AM |
3642 | try_to_freeze(); |
3643 | ||
ee74baa7 | 3644 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3645 | } |
1da177e4 | 3646 | |
f9467eae | 3647 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3648 | pktgen_stop(t); |
1da177e4 | 3649 | |
f9467eae | 3650 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3651 | pktgen_rem_all_ifs(t); |
1da177e4 | 3652 | |
f9467eae | 3653 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3654 | pktgen_rem_thread(t); |
cdcdbe0b | 3655 | |
551eaff1 ED |
3656 | /* Wait for kthread_stop */ |
3657 | while (!kthread_should_stop()) { | |
3658 | set_current_state(TASK_INTERRUPTIBLE); | |
3659 | schedule(); | |
3660 | } | |
3661 | __set_current_state(TASK_RUNNING); | |
3662 | ||
ee74baa7 | 3663 | return 0; |
1da177e4 LT |
3664 | } |
3665 | ||
222f1806 | 3666 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3667 | const char *ifname, bool exact) |
1da177e4 | 3668 | { |
c26a8016 | 3669 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3670 | size_t len = strlen(ifname); |
222f1806 | 3671 | |
3e984840 | 3672 | if_lock(t); |
c26a8016 | 3673 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3674 | if (strncmp(p->odevname, ifname, len) == 0) { |
3675 | if (p->odevname[len]) { | |
3676 | if (exact || p->odevname[len] != '@') | |
3677 | continue; | |
3678 | } | |
c26a8016 | 3679 | pkt_dev = p; |
222f1806 LC |
3680 | break; |
3681 | } | |
222f1806 LC |
3682 | |
3683 | if_unlock(t); | |
f9467eae | 3684 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3685 | return pkt_dev; |
1da177e4 LT |
3686 | } |
3687 | ||
4ec93edb YH |
3688 | /* |
3689 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3690 | */ |
3691 | ||
222f1806 LC |
3692 | static int add_dev_to_thread(struct pktgen_thread *t, |
3693 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3694 | { |
3695 | int rv = 0; | |
222f1806 LC |
3696 | |
3697 | if_lock(t); | |
3698 | ||
3699 | if (pkt_dev->pg_thread) { | |
f9467eae | 3700 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3701 | rv = -EBUSY; |
3702 | goto out; | |
3703 | } | |
c26a8016 LC |
3704 | |
3705 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3706 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3707 | pkt_dev->running = 0; |
3708 | ||
222f1806 LC |
3709 | out: |
3710 | if_unlock(t); | |
3711 | return rv; | |
1da177e4 LT |
3712 | } |
3713 | ||
3714 | /* Called under thread lock */ | |
3715 | ||
222f1806 | 3716 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3717 | { |
222f1806 | 3718 | struct pktgen_dev *pkt_dev; |
39df232f | 3719 | int err; |
3291b9db | 3720 | int node = cpu_to_node(t->cpu); |
222f1806 | 3721 | |
1da177e4 LT |
3722 | /* We don't allow a device to be on several threads */ |
3723 | ||
d50a6b56 SH |
3724 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
3725 | if (pkt_dev) { | |
f9467eae | 3726 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3727 | return -EBUSY; |
3728 | } | |
d50a6b56 | 3729 | |
3291b9db | 3730 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3731 | if (!pkt_dev) |
3732 | return -ENOMEM; | |
3733 | ||
593f63b0 | 3734 | strcpy(pkt_dev->odevname, ifname); |
3291b9db ED |
3735 | pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3736 | node); | |
d50a6b56 SH |
3737 | if (pkt_dev->flows == NULL) { |
3738 | kfree(pkt_dev); | |
3739 | return -ENOMEM; | |
3740 | } | |
222f1806 | 3741 | memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state)); |
d50a6b56 | 3742 | |
95ed63f7 | 3743 | pkt_dev->removal_mark = 0; |
d50a6b56 SH |
3744 | pkt_dev->min_pkt_size = ETH_ZLEN; |
3745 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3746 | pkt_dev->nfrags = 0; | |
3747 | pkt_dev->clone_skb = pg_clone_skb_d; | |
fd29cf72 | 3748 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3749 | pkt_dev->count = pg_count_d; |
3750 | pkt_dev->sofar = 0; | |
222f1806 | 3751 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3752 | pkt_dev->udp_src_max = 9; |
3753 | pkt_dev->udp_dst_min = 9; | |
3754 | pkt_dev->udp_dst_max = 9; | |
3755 | ||
34954ddc FF |
3756 | pkt_dev->vlan_p = 0; |
3757 | pkt_dev->vlan_cfi = 0; | |
3758 | pkt_dev->vlan_id = 0xffff; | |
3759 | pkt_dev->svlan_p = 0; | |
3760 | pkt_dev->svlan_cfi = 0; | |
3761 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3762 | pkt_dev->node = -1; |
34954ddc | 3763 | |
39df232f SH |
3764 | err = pktgen_setup_dev(pkt_dev, ifname); |
3765 | if (err) | |
3766 | goto out1; | |
d50a6b56 | 3767 | |
5efdccbc DL |
3768 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, |
3769 | &pktgen_if_fops, pkt_dev); | |
39df232f | 3770 | if (!pkt_dev->entry) { |
f9467eae | 3771 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3772 | PG_PROC_DIR, ifname); |
39df232f SH |
3773 | err = -EINVAL; |
3774 | goto out2; | |
d50a6b56 | 3775 | } |
a553e4a6 JHS |
3776 | #ifdef CONFIG_XFRM |
3777 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3778 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3779 | #endif | |
d50a6b56 SH |
3780 | |
3781 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3782 | out2: |
3783 | dev_put(pkt_dev->odev); | |
3784 | out1: | |
a553e4a6 JHS |
3785 | #ifdef CONFIG_XFRM |
3786 | free_SAs(pkt_dev); | |
3787 | #endif | |
1d0ebfe7 | 3788 | vfree(pkt_dev->flows); |
39df232f SH |
3789 | kfree(pkt_dev); |
3790 | return err; | |
1da177e4 LT |
3791 | } |
3792 | ||
ee74baa7 | 3793 | static int __init pktgen_create_thread(int cpu) |
1da177e4 | 3794 | { |
cdcdbe0b | 3795 | struct pktgen_thread *t; |
d50a6b56 | 3796 | struct proc_dir_entry *pe; |
ee74baa7 | 3797 | struct task_struct *p; |
222f1806 | 3798 | |
3291b9db ED |
3799 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3800 | cpu_to_node(cpu)); | |
222f1806 | 3801 | if (!t) { |
f9467eae | 3802 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3803 | return -ENOMEM; |
3804 | } | |
3805 | ||
222f1806 | 3806 | spin_lock_init(&t->if_lock); |
1da177e4 | 3807 | t->cpu = cpu; |
222f1806 | 3808 | |
ee74baa7 DM |
3809 | INIT_LIST_HEAD(&t->if_list); |
3810 | ||
3811 | list_add_tail(&t->th_list, &pktgen_threads); | |
d3ede327 | 3812 | init_completion(&t->start_done); |
ee74baa7 DM |
3813 | |
3814 | p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu); | |
3815 | if (IS_ERR(p)) { | |
f9467eae | 3816 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3817 | list_del(&t->th_list); |
3818 | kfree(t); | |
3819 | return PTR_ERR(p); | |
3820 | } | |
3821 | kthread_bind(p, cpu); | |
3822 | t->tsk = p; | |
3823 | ||
5efdccbc DL |
3824 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, |
3825 | &pktgen_thread_fops, t); | |
222f1806 | 3826 | if (!pe) { |
f9467eae | 3827 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3828 | PG_PROC_DIR, t->tsk->comm); |
3829 | kthread_stop(p); | |
3830 | list_del(&t->th_list); | |
222f1806 LC |
3831 | kfree(t); |
3832 | return -EINVAL; | |
3833 | } | |
d50a6b56 | 3834 | |
ee74baa7 | 3835 | wake_up_process(p); |
d3ede327 | 3836 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3837 | |
3838 | return 0; | |
3839 | } | |
3840 | ||
4ec93edb YH |
3841 | /* |
3842 | * Removes a device from the thread if_list. | |
1da177e4 | 3843 | */ |
222f1806 LC |
3844 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3845 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3846 | { |
c26a8016 LC |
3847 | struct list_head *q, *n; |
3848 | struct pktgen_dev *p; | |
1da177e4 | 3849 | |
c26a8016 LC |
3850 | list_for_each_safe(q, n, &t->if_list) { |
3851 | p = list_entry(q, struct pktgen_dev, list); | |
3852 | if (p == pkt_dev) | |
3853 | list_del(&p->list); | |
1da177e4 LT |
3854 | } |
3855 | } | |
3856 | ||
222f1806 LC |
3857 | static int pktgen_remove_device(struct pktgen_thread *t, |
3858 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3859 | { |
3860 | ||
f9467eae | 3861 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3862 | |
222f1806 | 3863 | if (pkt_dev->running) { |
f9467eae | 3864 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3865 | pktgen_stop_device(pkt_dev); |
3866 | } | |
3867 | ||
3868 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3869 | |
3870 | if (pkt_dev->odev) { | |
3871 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3872 | pkt_dev->odev = NULL; |
3873 | } | |
3874 | ||
1da177e4 LT |
3875 | /* And update the thread if_list */ |
3876 | ||
3877 | _rem_dev_from_if_list(t, pkt_dev); | |
3878 | ||
39df232f SH |
3879 | if (pkt_dev->entry) |
3880 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1da177e4 | 3881 | |
a553e4a6 JHS |
3882 | #ifdef CONFIG_XFRM |
3883 | free_SAs(pkt_dev); | |
3884 | #endif | |
1d0ebfe7 | 3885 | vfree(pkt_dev->flows); |
1da177e4 | 3886 | kfree(pkt_dev); |
222f1806 | 3887 | return 0; |
1da177e4 LT |
3888 | } |
3889 | ||
222f1806 | 3890 | static int __init pg_init(void) |
1da177e4 LT |
3891 | { |
3892 | int cpu; | |
d50a6b56 | 3893 | struct proc_dir_entry *pe; |
1da177e4 | 3894 | |
f9467eae | 3895 | pr_info("%s", version); |
1da177e4 | 3896 | |
457c4cbc | 3897 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); |
d50a6b56 SH |
3898 | if (!pg_proc_dir) |
3899 | return -ENODEV; | |
1da177e4 | 3900 | |
25296d59 | 3901 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); |
222f1806 | 3902 | if (pe == NULL) { |
f9467eae | 3903 | pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL); |
457c4cbc | 3904 | proc_net_remove(&init_net, PG_PROC_DIR); |
222f1806 LC |
3905 | return -EINVAL; |
3906 | } | |
1da177e4 | 3907 | |
1da177e4 LT |
3908 | /* Register us to receive netdevice events */ |
3909 | register_netdevice_notifier(&pktgen_notifier_block); | |
222f1806 | 3910 | |
670c02c2 | 3911 | for_each_online_cpu(cpu) { |
8024bb24 | 3912 | int err; |
1da177e4 | 3913 | |
ee74baa7 | 3914 | err = pktgen_create_thread(cpu); |
8024bb24 | 3915 | if (err) |
f9467eae JP |
3916 | pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n", |
3917 | cpu, err); | |
222f1806 | 3918 | } |
8024bb24 LC |
3919 | |
3920 | if (list_empty(&pktgen_threads)) { | |
f9467eae | 3921 | pr_err("ERROR: Initialization failed for all threads\n"); |
8024bb24 LC |
3922 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3923 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
457c4cbc | 3924 | proc_net_remove(&init_net, PG_PROC_DIR); |
8024bb24 LC |
3925 | return -ENODEV; |
3926 | } | |
3927 | ||
222f1806 | 3928 | return 0; |
1da177e4 LT |
3929 | } |
3930 | ||
3931 | static void __exit pg_cleanup(void) | |
3932 | { | |
cdcdbe0b LC |
3933 | struct pktgen_thread *t; |
3934 | struct list_head *q, *n; | |
1da177e4 | 3935 | |
222f1806 | 3936 | /* Stop all interfaces & threads */ |
551eaff1 | 3937 | pktgen_exiting = true; |
1da177e4 | 3938 | |
cdcdbe0b LC |
3939 | list_for_each_safe(q, n, &pktgen_threads) { |
3940 | t = list_entry(q, struct pktgen_thread, th_list); | |
ee74baa7 DM |
3941 | kthread_stop(t->tsk); |
3942 | kfree(t); | |
222f1806 | 3943 | } |
1da177e4 | 3944 | |
222f1806 | 3945 | /* Un-register us from receiving netdevice events */ |
1da177e4 LT |
3946 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3947 | ||
222f1806 | 3948 | /* Clean up proc file system */ |
d50a6b56 | 3949 | remove_proc_entry(PGCTRL, pg_proc_dir); |
457c4cbc | 3950 | proc_net_remove(&init_net, PG_PROC_DIR); |
1da177e4 LT |
3951 | } |
3952 | ||
1da177e4 LT |
3953 | module_init(pg_init); |
3954 | module_exit(pg_cleanup); | |
3955 | ||
c3d2f52d | 3956 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3957 | MODULE_DESCRIPTION("Packet Generator tool"); |
3958 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3959 | MODULE_VERSION(VERSION); |
1da177e4 | 3960 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3961 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3962 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3963 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3964 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3965 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3966 | module_param(debug, int, 0); |
c3d2f52d | 3967 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |