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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
8788370a JDB |
72 | * way. |
73 | * The if_list is RCU protected, and the if_lock remains to protect updating | |
74 | * of if_list, from "add_device" as it invoked from userspace (via proc write). | |
1da177e4 | 75 | * |
4ec93edb YH |
76 | * By design there should only be *one* "controlling" process. In practice |
77 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 78 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 79 | * For practical use this should be no problem. |
1da177e4 | 80 | * |
4ec93edb YH |
81 | * Note when adding devices to a specific CPU there good idea to also assign |
82 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
83 | * --ro |
84 | * | |
4ec93edb | 85 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
86 | * memleak 030710- KJP |
87 | * | |
88 | * First "ranges" functionality for ipv6 030726 --ro | |
89 | * | |
90 | * Included flow support. 030802 ANK. | |
91 | * | |
92 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 93 | * |
1da177e4 LT |
94 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
95 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
96 | * | |
4ec93edb | 97 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
98 | * <shemminger@osdl.org> 040923 |
99 | * | |
ca9f1fd2 | 100 | * Randy Dunlap fixed u64 printk compiler warning |
1da177e4 LT |
101 | * |
102 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
103 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
104 | * | |
4ec93edb | 105 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
106 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
107 | * | |
4ec93edb | 108 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 109 | * 050103 |
ca6549af SW |
110 | * |
111 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
112 | * | |
34954ddc FF |
113 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
114 | * | |
ce5d0b47 AR |
115 | * Fixed src_mac command to set source mac of packet to value specified in |
116 | * command by Adit Ranadive <adit.262@gmail.com> | |
117 | * | |
1da177e4 | 118 | */ |
f9467eae JP |
119 | |
120 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
121 | ||
1da177e4 LT |
122 | #include <linux/sys.h> |
123 | #include <linux/types.h> | |
124 | #include <linux/module.h> | |
125 | #include <linux/moduleparam.h> | |
126 | #include <linux/kernel.h> | |
222fa076 | 127 | #include <linux/mutex.h> |
1da177e4 LT |
128 | #include <linux/sched.h> |
129 | #include <linux/slab.h> | |
130 | #include <linux/vmalloc.h> | |
1da177e4 LT |
131 | #include <linux/unistd.h> |
132 | #include <linux/string.h> | |
133 | #include <linux/ptrace.h> | |
134 | #include <linux/errno.h> | |
135 | #include <linux/ioport.h> | |
136 | #include <linux/interrupt.h> | |
4fc268d2 | 137 | #include <linux/capability.h> |
2bc481cf | 138 | #include <linux/hrtimer.h> |
09fe3ef4 | 139 | #include <linux/freezer.h> |
1da177e4 LT |
140 | #include <linux/delay.h> |
141 | #include <linux/timer.h> | |
cdcdbe0b | 142 | #include <linux/list.h> |
1da177e4 LT |
143 | #include <linux/init.h> |
144 | #include <linux/skbuff.h> | |
145 | #include <linux/netdevice.h> | |
146 | #include <linux/inet.h> | |
147 | #include <linux/inetdevice.h> | |
148 | #include <linux/rtnetlink.h> | |
149 | #include <linux/if_arp.h> | |
34954ddc | 150 | #include <linux/if_vlan.h> |
1da177e4 LT |
151 | #include <linux/in.h> |
152 | #include <linux/ip.h> | |
153 | #include <linux/ipv6.h> | |
154 | #include <linux/udp.h> | |
155 | #include <linux/proc_fs.h> | |
d50a6b56 | 156 | #include <linux/seq_file.h> |
1da177e4 | 157 | #include <linux/wait.h> |
f404e9a6 | 158 | #include <linux/etherdevice.h> |
ee74baa7 | 159 | #include <linux/kthread.h> |
268bb0ce | 160 | #include <linux/prefetch.h> |
457c4cbc | 161 | #include <net/net_namespace.h> |
1da177e4 LT |
162 | #include <net/checksum.h> |
163 | #include <net/ipv6.h> | |
c26bf4a5 | 164 | #include <net/udp.h> |
73d94e94 | 165 | #include <net/ip6_checksum.h> |
1da177e4 | 166 | #include <net/addrconf.h> |
a553e4a6 JHS |
167 | #ifdef CONFIG_XFRM |
168 | #include <net/xfrm.h> | |
169 | #endif | |
4e58a027 | 170 | #include <net/netns/generic.h> |
1da177e4 LT |
171 | #include <asm/byteorder.h> |
172 | #include <linux/rcupdate.h> | |
1977f032 | 173 | #include <linux/bitops.h> |
63adc6fb SH |
174 | #include <linux/io.h> |
175 | #include <linux/timex.h> | |
176 | #include <linux/uaccess.h> | |
1da177e4 | 177 | #include <asm/dma.h> |
222f1806 | 178 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 179 | |
43d28b65 | 180 | #define VERSION "2.74" |
1da177e4 | 181 | #define IP_NAME_SZ 32 |
ca6549af | 182 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 183 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 184 | |
f9467eae JP |
185 | #define func_enter() pr_debug("entering %s\n", __func__); |
186 | ||
1da177e4 | 187 | /* Device flag bits */ |
222f1806 LC |
188 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
189 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
190 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
191 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
192 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
193 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
194 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
195 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 196 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
197 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
198 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 199 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 200 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 201 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 202 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 203 | #define F_NODE (1<<15) /* Node memory alloc*/ |
c26bf4a5 | 204 | #define F_UDPCSUM (1<<16) /* Include UDP checksum */ |
afb84b62 | 205 | #define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */ |
1da177e4 LT |
206 | |
207 | /* Thread control flag bits */ | |
6b80d6a6 SH |
208 | #define T_STOP (1<<0) /* Stop run */ |
209 | #define T_RUN (1<<1) /* Start run */ | |
210 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
211 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 212 | |
62f64aed AS |
213 | /* Xmit modes */ |
214 | #define M_START_XMIT 0 /* Default normal TX */ | |
215 | #define M_NETIF_RECEIVE 1 /* Inject packets into stack */ | |
216 | ||
8788370a | 217 | /* If lock -- protects updating of if_list */ |
1da177e4 LT |
218 | #define if_lock(t) spin_lock(&(t->if_lock)); |
219 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
220 | ||
221 | /* Used to help with determining the pkts on receive */ | |
222 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
223 | #define PG_PROC_DIR "pktgen" |
224 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
225 | |
226 | #define MAX_CFLOWS 65536 | |
227 | ||
34954ddc FF |
228 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
229 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
230 | ||
222f1806 | 231 | struct flow_state { |
252e3346 | 232 | __be32 cur_daddr; |
222f1806 | 233 | int count; |
a553e4a6 JHS |
234 | #ifdef CONFIG_XFRM |
235 | struct xfrm_state *x; | |
236 | #endif | |
007a531b | 237 | __u32 flags; |
1da177e4 LT |
238 | }; |
239 | ||
007a531b JHS |
240 | /* flow flag bits */ |
241 | #define F_INIT (1<<0) /* flow has been initialized */ | |
242 | ||
1da177e4 | 243 | struct pktgen_dev { |
1da177e4 LT |
244 | /* |
245 | * Try to keep frequent/infrequent used vars. separated. | |
246 | */ | |
39df232f SH |
247 | struct proc_dir_entry *entry; /* proc file */ |
248 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 249 | struct list_head list; /* chaining in the thread's run-queue */ |
8788370a | 250 | struct rcu_head rcu; /* freed by RCU */ |
1da177e4 | 251 | |
63adc6fb | 252 | int running; /* if false, the test will stop */ |
1da177e4 | 253 | |
222f1806 LC |
254 | /* If min != max, then we will either do a linear iteration, or |
255 | * we will do a random selection from within the range. | |
256 | */ | |
257 | __u32 flags; | |
62f64aed | 258 | int xmit_mode; |
68bf9f0b AW |
259 | int min_pkt_size; |
260 | int max_pkt_size; | |
16dab72f | 261 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 262 | int nfrags; |
62f64aed AS |
263 | int removal_mark; /* non-zero => the device is marked for |
264 | * removal by worker thread */ | |
265 | ||
26ad7879 | 266 | struct page *page; |
fd29cf72 SH |
267 | u64 delay; /* nano-seconds */ |
268 | ||
222f1806 LC |
269 | __u64 count; /* Default No packets to send */ |
270 | __u64 sofar; /* How many pkts we've sent so far */ | |
271 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 272 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
273 | |
274 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
275 | |
276 | __u64 allocated_skbs; | |
277 | __u32 clone_count; | |
278 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
279 | * Or a failed transmit of some sort? |
280 | * This will keep sequence numbers in order | |
222f1806 | 281 | */ |
fd29cf72 SH |
282 | ktime_t next_tx; |
283 | ktime_t started_at; | |
284 | ktime_t stopped_at; | |
285 | u64 idle_acc; /* nano-seconds */ | |
286 | ||
222f1806 LC |
287 | __u32 seq_num; |
288 | ||
63adc6fb SH |
289 | int clone_skb; /* |
290 | * Use multiple SKBs during packet gen. | |
291 | * If this number is greater than 1, then | |
292 | * that many copies of the same packet will be | |
293 | * sent before a new packet is allocated. | |
294 | * If you want to send 1024 identical packets | |
295 | * before creating a new packet, | |
296 | * set clone_skb to 1024. | |
222f1806 LC |
297 | */ |
298 | ||
299 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
300 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
301 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
302 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
303 | ||
304 | struct in6_addr in6_saddr; | |
305 | struct in6_addr in6_daddr; | |
306 | struct in6_addr cur_in6_daddr; | |
307 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 308 | /* For ranges */ |
222f1806 LC |
309 | struct in6_addr min_in6_daddr; |
310 | struct in6_addr max_in6_daddr; | |
311 | struct in6_addr min_in6_saddr; | |
312 | struct in6_addr max_in6_saddr; | |
313 | ||
314 | /* If we're doing ranges, random or incremental, then this | |
315 | * defines the min/max for those ranges. | |
316 | */ | |
252e3346 AV |
317 | __be32 saddr_min; /* inclusive, source IP address */ |
318 | __be32 saddr_max; /* exclusive, source IP address */ | |
319 | __be32 daddr_min; /* inclusive, dest IP address */ | |
320 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
321 | |
322 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
323 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
324 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
325 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
326 | ||
1ca7768c | 327 | /* DSCP + ECN */ |
63adc6fb SH |
328 | __u8 tos; /* six MSB of (former) IPv4 TOS |
329 | are for dscp codepoint */ | |
330 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
331 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 332 | |
ca6549af | 333 | /* MPLS */ |
95c96174 | 334 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
335 | __be32 labels[MAX_MPLS_LABELS]; |
336 | ||
34954ddc FF |
337 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
338 | __u8 vlan_p; | |
339 | __u8 vlan_cfi; | |
340 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
341 | ||
342 | __u8 svlan_p; | |
343 | __u8 svlan_cfi; | |
344 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
345 | ||
222f1806 LC |
346 | __u32 src_mac_count; /* How many MACs to iterate through */ |
347 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
348 | ||
349 | unsigned char dst_mac[ETH_ALEN]; | |
350 | unsigned char src_mac[ETH_ALEN]; | |
351 | ||
352 | __u32 cur_dst_mac_offset; | |
353 | __u32 cur_src_mac_offset; | |
252e3346 AV |
354 | __be32 cur_saddr; |
355 | __be32 cur_daddr; | |
66ed1e5e | 356 | __u16 ip_id; |
222f1806 LC |
357 | __u16 cur_udp_dst; |
358 | __u16 cur_udp_src; | |
45b270f8 | 359 | __u16 cur_queue_map; |
222f1806 | 360 | __u32 cur_pkt_size; |
baac8564 | 361 | __u32 last_pkt_size; |
222f1806 LC |
362 | |
363 | __u8 hh[14]; | |
364 | /* = { | |
365 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
366 | ||
367 | We fill in SRC address later | |
368 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
369 | 0x08, 0x00 | |
370 | }; | |
371 | */ | |
372 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
373 | ||
63adc6fb | 374 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
375 | * are transmitting the same one multiple times |
376 | */ | |
63adc6fb SH |
377 | struct net_device *odev; /* The out-going device. |
378 | * Note that the device should have it's | |
379 | * pg_info pointer pointing back to this | |
380 | * device. | |
381 | * Set when the user specifies the out-going | |
382 | * device name (not when the inject is | |
383 | * started as it used to do.) | |
384 | */ | |
593f63b0 | 385 | char odevname[32]; |
1da177e4 | 386 | struct flow_state *flows; |
95c96174 ED |
387 | unsigned int cflows; /* Concurrent flows (config) */ |
388 | unsigned int lflow; /* Flow length (config) */ | |
389 | unsigned int nflows; /* accumulated flows (stats) */ | |
390 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
391 | |
392 | u16 queue_map_min; | |
393 | u16 queue_map_max; | |
9e50e3ac | 394 | __u32 skb_priority; /* skb priority field */ |
38b2cf29 | 395 | unsigned int burst; /* number of duplicated packets to burst */ |
e99b99b4 | 396 | int node; /* Memory node */ |
45b270f8 | 397 | |
a553e4a6 JHS |
398 | #ifdef CONFIG_XFRM |
399 | __u8 ipsmode; /* IPSEC mode (config) */ | |
400 | __u8 ipsproto; /* IPSEC type (config) */ | |
de4aee7d | 401 | __u32 spi; |
cf93d47e FD |
402 | struct dst_entry dst; |
403 | struct dst_ops dstops; | |
a553e4a6 | 404 | #endif |
39df232f | 405 | char result[512]; |
1da177e4 LT |
406 | }; |
407 | ||
408 | struct pktgen_hdr { | |
252e3346 AV |
409 | __be32 pgh_magic; |
410 | __be32 seq_num; | |
411 | __be32 tv_sec; | |
412 | __be32 tv_usec; | |
1da177e4 LT |
413 | }; |
414 | ||
4e58a027 CW |
415 | |
416 | static int pg_net_id __read_mostly; | |
417 | ||
418 | struct pktgen_net { | |
419 | struct net *net; | |
420 | struct proc_dir_entry *proc_dir; | |
421 | struct list_head pktgen_threads; | |
422 | bool pktgen_exiting; | |
423 | }; | |
551eaff1 | 424 | |
1da177e4 | 425 | struct pktgen_thread { |
63adc6fb | 426 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 427 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 428 | struct list_head th_list; |
ee74baa7 | 429 | struct task_struct *tsk; |
222f1806 | 430 | char result[512]; |
222f1806 | 431 | |
63adc6fb SH |
432 | /* Field for thread to receive "posted" events terminate, |
433 | stop ifs etc. */ | |
222f1806 LC |
434 | |
435 | u32 control; | |
1da177e4 LT |
436 | int cpu; |
437 | ||
222f1806 | 438 | wait_queue_head_t queue; |
d3ede327 | 439 | struct completion start_done; |
4e58a027 | 440 | struct pktgen_net *net; |
1da177e4 LT |
441 | }; |
442 | ||
443 | #define REMOVE 1 | |
444 | #define FIND 0 | |
445 | ||
c3d2f52d | 446 | static const char version[] = |
f9467eae JP |
447 | "Packet Generator for packet performance testing. " |
448 | "Version: " VERSION "\n"; | |
1da177e4 | 449 | |
222f1806 LC |
450 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
451 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
452 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 453 | const char *ifname, bool exact); |
1da177e4 | 454 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
455 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
456 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
457 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 458 | |
222f1806 | 459 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 460 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 461 | |
1da177e4 | 462 | /* Module parameters, defaults. */ |
65c5b786 SH |
463 | static int pg_count_d __read_mostly = 1000; |
464 | static int pg_delay_d __read_mostly; | |
465 | static int pg_clone_skb_d __read_mostly; | |
466 | static int debug __read_mostly; | |
1da177e4 | 467 | |
222fa076 | 468 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 469 | |
1da177e4 LT |
470 | static struct notifier_block pktgen_notifier_block = { |
471 | .notifier_call = pktgen_device_event, | |
472 | }; | |
473 | ||
1da177e4 | 474 | /* |
4ec93edb | 475 | * /proc handling functions |
1da177e4 LT |
476 | * |
477 | */ | |
478 | ||
d50a6b56 | 479 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 480 | { |
c3d2f52d | 481 | seq_puts(seq, version); |
d50a6b56 | 482 | return 0; |
1da177e4 LT |
483 | } |
484 | ||
63adc6fb SH |
485 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
486 | size_t count, loff_t *ppos) | |
1da177e4 | 487 | { |
d50a6b56 | 488 | char data[128]; |
4e58a027 | 489 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 490 | |
09455747 MK |
491 | if (!capable(CAP_NET_ADMIN)) |
492 | return -EPERM; | |
1da177e4 | 493 | |
20b0c718 MK |
494 | if (count == 0) |
495 | return -EINVAL; | |
496 | ||
d50a6b56 SH |
497 | if (count > sizeof(data)) |
498 | count = sizeof(data); | |
1da177e4 | 499 | |
09455747 MK |
500 | if (copy_from_user(data, buf, count)) |
501 | return -EFAULT; | |
502 | ||
20b0c718 | 503 | data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ |
1da177e4 | 504 | |
222f1806 | 505 | if (!strcmp(data, "stop")) |
4e58a027 | 506 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 507 | |
222f1806 | 508 | else if (!strcmp(data, "start")) |
4e58a027 | 509 | pktgen_run_all_threads(pn); |
1da177e4 | 510 | |
eb37b41c | 511 | else if (!strcmp(data, "reset")) |
4e58a027 | 512 | pktgen_reset_all_threads(pn); |
eb37b41c | 513 | |
222f1806 | 514 | else |
294a0b7f | 515 | pr_warn("Unknown command: %s\n", data); |
1da177e4 | 516 | |
09455747 | 517 | return count; |
1da177e4 LT |
518 | } |
519 | ||
d50a6b56 SH |
520 | static int pgctrl_open(struct inode *inode, struct file *file) |
521 | { | |
d9dda78b | 522 | return single_open(file, pgctrl_show, PDE_DATA(inode)); |
d50a6b56 SH |
523 | } |
524 | ||
9a32144e | 525 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
526 | .owner = THIS_MODULE, |
527 | .open = pgctrl_open, | |
528 | .read = seq_read, | |
529 | .llseek = seq_lseek, | |
530 | .write = pgctrl_write, | |
531 | .release = single_release, | |
d50a6b56 SH |
532 | }; |
533 | ||
534 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 535 | { |
648fda74 | 536 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
537 | ktime_t stopped; |
538 | u64 idle; | |
222f1806 LC |
539 | |
540 | seq_printf(seq, | |
541 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
542 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
543 | pkt_dev->max_pkt_size); | |
544 | ||
545 | seq_printf(seq, | |
fd29cf72 SH |
546 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
547 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 548 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
549 | |
550 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
551 | pkt_dev->lflow); | |
552 | ||
45b270f8 RO |
553 | seq_printf(seq, |
554 | " queue_map_min: %u queue_map_max: %u\n", | |
555 | pkt_dev->queue_map_min, | |
556 | pkt_dev->queue_map_max); | |
557 | ||
9e50e3ac JF |
558 | if (pkt_dev->skb_priority) |
559 | seq_printf(seq, " skb_priority: %u\n", | |
560 | pkt_dev->skb_priority); | |
561 | ||
222f1806 | 562 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 563 | seq_printf(seq, |
47a0200d AD |
564 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
565 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
566 | &pkt_dev->in6_saddr, | |
567 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
568 | &pkt_dev->in6_daddr, | |
569 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
570 | } else { |
571 | seq_printf(seq, | |
572 | " dst_min: %s dst_max: %s\n", | |
573 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 574 | seq_printf(seq, |
d079abd1 | 575 | " src_min: %s src_max: %s\n", |
63adc6fb SH |
576 | pkt_dev->src_min, pkt_dev->src_max); |
577 | } | |
1da177e4 | 578 | |
222f1806 | 579 | seq_puts(seq, " src_mac: "); |
1da177e4 | 580 | |
e174961c JB |
581 | seq_printf(seq, "%pM ", |
582 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
583 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 | 584 | |
97dc48e2 | 585 | seq_puts(seq, "dst_mac: "); |
e174961c | 586 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
587 | |
588 | seq_printf(seq, | |
63adc6fb SH |
589 | " udp_src_min: %d udp_src_max: %d" |
590 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
591 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
592 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
593 | ||
594 | seq_printf(seq, | |
ca6549af | 595 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 596 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 597 | |
ca6549af | 598 | if (pkt_dev->nr_labels) { |
95c96174 | 599 | unsigned int i; |
97dc48e2 | 600 | seq_puts(seq, " mpls: "); |
e71a4783 | 601 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
602 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
603 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
604 | } | |
605 | ||
63adc6fb | 606 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 607 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
608 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
609 | pkt_dev->vlan_cfi); | |
34954ddc | 610 | |
63adc6fb | 611 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 612 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
613 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
614 | pkt_dev->svlan_cfi); | |
34954ddc | 615 | |
63adc6fb | 616 | if (pkt_dev->tos) |
1ca7768c | 617 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 618 | |
63adc6fb | 619 | if (pkt_dev->traffic_class) |
1ca7768c | 620 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 621 | |
38b2cf29 AS |
622 | if (pkt_dev->burst > 1) |
623 | seq_printf(seq, " burst: %d\n", pkt_dev->burst); | |
624 | ||
e99b99b4 RO |
625 | if (pkt_dev->node >= 0) |
626 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
627 | ||
62f64aed AS |
628 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) |
629 | seq_puts(seq, " xmit_mode: netif_receive\n"); | |
630 | ||
97dc48e2 | 631 | seq_puts(seq, " Flags: "); |
ca6549af | 632 | |
222f1806 | 633 | if (pkt_dev->flags & F_IPV6) |
97dc48e2 | 634 | seq_puts(seq, "IPV6 "); |
1da177e4 | 635 | |
222f1806 | 636 | if (pkt_dev->flags & F_IPSRC_RND) |
97dc48e2 | 637 | seq_puts(seq, "IPSRC_RND "); |
1da177e4 | 638 | |
222f1806 | 639 | if (pkt_dev->flags & F_IPDST_RND) |
97dc48e2 | 640 | seq_puts(seq, "IPDST_RND "); |
1da177e4 | 641 | |
222f1806 | 642 | if (pkt_dev->flags & F_TXSIZE_RND) |
97dc48e2 | 643 | seq_puts(seq, "TXSIZE_RND "); |
1da177e4 | 644 | |
222f1806 | 645 | if (pkt_dev->flags & F_UDPSRC_RND) |
97dc48e2 | 646 | seq_puts(seq, "UDPSRC_RND "); |
1da177e4 | 647 | |
222f1806 | 648 | if (pkt_dev->flags & F_UDPDST_RND) |
97dc48e2 | 649 | seq_puts(seq, "UDPDST_RND "); |
1da177e4 | 650 | |
c26bf4a5 | 651 | if (pkt_dev->flags & F_UDPCSUM) |
97dc48e2 | 652 | seq_puts(seq, "UDPCSUM "); |
c26bf4a5 | 653 | |
afb84b62 JDB |
654 | if (pkt_dev->flags & F_NO_TIMESTAMP) |
655 | seq_puts(seq, "NO_TIMESTAMP "); | |
656 | ||
ca6549af | 657 | if (pkt_dev->flags & F_MPLS_RND) |
97dc48e2 | 658 | seq_puts(seq, "MPLS_RND "); |
ca6549af | 659 | |
45b270f8 | 660 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
97dc48e2 | 661 | seq_puts(seq, "QUEUE_MAP_RND "); |
45b270f8 | 662 | |
e6fce5b9 | 663 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
97dc48e2 | 664 | seq_puts(seq, "QUEUE_MAP_CPU "); |
e6fce5b9 | 665 | |
007a531b JHS |
666 | if (pkt_dev->cflows) { |
667 | if (pkt_dev->flags & F_FLOW_SEQ) | |
97dc48e2 | 668 | seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/ |
007a531b | 669 | else |
97dc48e2 | 670 | seq_puts(seq, "FLOW_RND "); |
007a531b JHS |
671 | } |
672 | ||
a553e4a6 | 673 | #ifdef CONFIG_XFRM |
8101328b | 674 | if (pkt_dev->flags & F_IPSEC_ON) { |
97dc48e2 | 675 | seq_puts(seq, "IPSEC "); |
8101328b FD |
676 | if (pkt_dev->spi) |
677 | seq_printf(seq, "spi:%u", pkt_dev->spi); | |
678 | } | |
a553e4a6 JHS |
679 | #endif |
680 | ||
222f1806 | 681 | if (pkt_dev->flags & F_MACSRC_RND) |
97dc48e2 | 682 | seq_puts(seq, "MACSRC_RND "); |
1da177e4 | 683 | |
222f1806 | 684 | if (pkt_dev->flags & F_MACDST_RND) |
97dc48e2 | 685 | seq_puts(seq, "MACDST_RND "); |
1da177e4 | 686 | |
34954ddc | 687 | if (pkt_dev->flags & F_VID_RND) |
97dc48e2 | 688 | seq_puts(seq, "VID_RND "); |
34954ddc FF |
689 | |
690 | if (pkt_dev->flags & F_SVID_RND) | |
97dc48e2 | 691 | seq_puts(seq, "SVID_RND "); |
34954ddc | 692 | |
e99b99b4 | 693 | if (pkt_dev->flags & F_NODE) |
97dc48e2 | 694 | seq_puts(seq, "NODE_ALLOC "); |
e99b99b4 | 695 | |
222f1806 LC |
696 | seq_puts(seq, "\n"); |
697 | ||
fd29cf72 | 698 | /* not really stopped, more like last-running-at */ |
398f382c | 699 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
700 | idle = pkt_dev->idle_acc; |
701 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 702 | |
222f1806 | 703 | seq_printf(seq, |
fd29cf72 | 704 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 705 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
706 | (unsigned long long)pkt_dev->errors); |
707 | ||
708 | seq_printf(seq, | |
709 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
710 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
711 | (unsigned long long) ktime_to_us(stopped), | |
712 | (unsigned long long) idle); | |
1da177e4 | 713 | |
222f1806 LC |
714 | seq_printf(seq, |
715 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
716 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
717 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 718 | |
222f1806 | 719 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
720 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
721 | &pkt_dev->cur_in6_saddr, | |
722 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 723 | } else |
0373a946 AW |
724 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
725 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 726 | |
222f1806 | 727 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 728 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 729 | |
45b270f8 RO |
730 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
731 | ||
222f1806 | 732 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
733 | |
734 | if (pkt_dev->result[0]) | |
222f1806 | 735 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 736 | else |
97dc48e2 | 737 | seq_puts(seq, "Result: Idle\n"); |
1da177e4 | 738 | |
d50a6b56 | 739 | return 0; |
1da177e4 LT |
740 | } |
741 | ||
ca6549af | 742 | |
63adc6fb SH |
743 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
744 | __u32 *num) | |
ca6549af SW |
745 | { |
746 | int i = 0; | |
747 | *num = 0; | |
748 | ||
e71a4783 | 749 | for (; i < maxlen; i++) { |
82fd5b5d | 750 | int value; |
ca6549af SW |
751 | char c; |
752 | *num <<= 4; | |
753 | if (get_user(c, &user_buffer[i])) | |
754 | return -EFAULT; | |
82fd5b5d AS |
755 | value = hex_to_bin(c); |
756 | if (value >= 0) | |
757 | *num |= value; | |
ca6549af SW |
758 | else |
759 | break; | |
760 | } | |
761 | return i; | |
762 | } | |
763 | ||
222f1806 LC |
764 | static int count_trail_chars(const char __user * user_buffer, |
765 | unsigned int maxlen) | |
1da177e4 LT |
766 | { |
767 | int i; | |
768 | ||
769 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
770 | char c; |
771 | if (get_user(c, &user_buffer[i])) | |
772 | return -EFAULT; | |
773 | switch (c) { | |
1da177e4 LT |
774 | case '\"': |
775 | case '\n': | |
776 | case '\r': | |
777 | case '\t': | |
778 | case ' ': | |
779 | case '=': | |
780 | break; | |
781 | default: | |
782 | goto done; | |
3ff50b79 | 783 | } |
1da177e4 LT |
784 | } |
785 | done: | |
786 | return i; | |
787 | } | |
788 | ||
bf0813bd PG |
789 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
790 | unsigned long *num) | |
1da177e4 | 791 | { |
d6182223 | 792 | int i; |
1da177e4 | 793 | *num = 0; |
222f1806 | 794 | |
d6182223 | 795 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
796 | char c; |
797 | if (get_user(c, &user_buffer[i])) | |
798 | return -EFAULT; | |
799 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 800 | *num *= 10; |
222f1806 | 801 | *num += c - '0'; |
1da177e4 LT |
802 | } else |
803 | break; | |
804 | } | |
805 | return i; | |
806 | } | |
807 | ||
222f1806 | 808 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 809 | { |
d6182223 | 810 | int i; |
1da177e4 | 811 | |
d6182223 | 812 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
813 | char c; |
814 | if (get_user(c, &user_buffer[i])) | |
815 | return -EFAULT; | |
816 | switch (c) { | |
1da177e4 LT |
817 | case '\"': |
818 | case '\n': | |
819 | case '\r': | |
820 | case '\t': | |
821 | case ' ': | |
822 | goto done_str; | |
1da177e4 LT |
823 | default: |
824 | break; | |
3ff50b79 | 825 | } |
1da177e4 LT |
826 | } |
827 | done_str: | |
1da177e4 LT |
828 | return i; |
829 | } | |
830 | ||
ca6549af SW |
831 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
832 | { | |
95c96174 | 833 | unsigned int n = 0; |
ca6549af SW |
834 | char c; |
835 | ssize_t i = 0; | |
836 | int len; | |
837 | ||
838 | pkt_dev->nr_labels = 0; | |
839 | do { | |
840 | __u32 tmp; | |
1ca7768c | 841 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
842 | if (len <= 0) |
843 | return len; | |
844 | pkt_dev->labels[n] = htonl(tmp); | |
845 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
846 | pkt_dev->flags |= F_MPLS_RND; | |
847 | i += len; | |
848 | if (get_user(c, &buffer[i])) | |
849 | return -EFAULT; | |
850 | i++; | |
851 | n++; | |
852 | if (n >= MAX_MPLS_LABELS) | |
853 | return -E2BIG; | |
e71a4783 | 854 | } while (c == ','); |
ca6549af SW |
855 | |
856 | pkt_dev->nr_labels = n; | |
857 | return i; | |
858 | } | |
859 | ||
222f1806 LC |
860 | static ssize_t pktgen_if_write(struct file *file, |
861 | const char __user * user_buffer, size_t count, | |
862 | loff_t * offset) | |
1da177e4 | 863 | { |
8a994a71 | 864 | struct seq_file *seq = file->private_data; |
222f1806 | 865 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 866 | int i, max, len; |
1da177e4 LT |
867 | char name[16], valstr[32]; |
868 | unsigned long value = 0; | |
222f1806 LC |
869 | char *pg_result = NULL; |
870 | int tmp = 0; | |
1da177e4 | 871 | char buf[128]; |
222f1806 LC |
872 | |
873 | pg_result = &(pkt_dev->result[0]); | |
874 | ||
1da177e4 | 875 | if (count < 1) { |
294a0b7f | 876 | pr_warn("wrong command format\n"); |
1da177e4 LT |
877 | return -EINVAL; |
878 | } | |
222f1806 | 879 | |
d6182223 PG |
880 | max = count; |
881 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 882 | if (tmp < 0) { |
294a0b7f | 883 | pr_warn("illegal format\n"); |
222f1806 | 884 | return tmp; |
1da177e4 | 885 | } |
d6182223 | 886 | i = tmp; |
222f1806 | 887 | |
1da177e4 LT |
888 | /* Read variable name */ |
889 | ||
890 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 891 | if (len < 0) |
222f1806 | 892 | return len; |
63adc6fb | 893 | |
1da177e4 | 894 | memset(name, 0, sizeof(name)); |
222f1806 | 895 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
896 | return -EFAULT; |
897 | i += len; | |
222f1806 LC |
898 | |
899 | max = count - i; | |
1da177e4 | 900 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
901 | if (len < 0) |
902 | return len; | |
903 | ||
1da177e4 LT |
904 | i += len; |
905 | ||
906 | if (debug) { | |
86c2c0a8 | 907 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
908 | char tb[copy + 1]; |
909 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 910 | return -EFAULT; |
448d7b5d | 911 | tb[copy] = 0; |
f342cda7 JP |
912 | pr_debug("%s,%lu buffer -:%s:-\n", |
913 | name, (unsigned long)count, tb); | |
222f1806 | 914 | } |
1da177e4 LT |
915 | |
916 | if (!strcmp(name, "min_pkt_size")) { | |
917 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 918 | if (len < 0) |
222f1806 | 919 | return len; |
63adc6fb | 920 | |
1da177e4 | 921 | i += len; |
222f1806 LC |
922 | if (value < 14 + 20 + 8) |
923 | value = 14 + 20 + 8; | |
924 | if (value != pkt_dev->min_pkt_size) { | |
925 | pkt_dev->min_pkt_size = value; | |
926 | pkt_dev->cur_pkt_size = value; | |
927 | } | |
928 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
929 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
930 | return count; |
931 | } | |
932 | ||
222f1806 | 933 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 934 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 935 | if (len < 0) |
222f1806 | 936 | return len; |
63adc6fb | 937 | |
1da177e4 | 938 | i += len; |
222f1806 LC |
939 | if (value < 14 + 20 + 8) |
940 | value = 14 + 20 + 8; | |
941 | if (value != pkt_dev->max_pkt_size) { | |
942 | pkt_dev->max_pkt_size = value; | |
943 | pkt_dev->cur_pkt_size = value; | |
944 | } | |
945 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
946 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
947 | return count; |
948 | } | |
949 | ||
222f1806 | 950 | /* Shortcut for min = max */ |
1da177e4 LT |
951 | |
952 | if (!strcmp(name, "pkt_size")) { | |
953 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 954 | if (len < 0) |
222f1806 | 955 | return len; |
63adc6fb | 956 | |
1da177e4 | 957 | i += len; |
222f1806 LC |
958 | if (value < 14 + 20 + 8) |
959 | value = 14 + 20 + 8; | |
960 | if (value != pkt_dev->min_pkt_size) { | |
961 | pkt_dev->min_pkt_size = value; | |
962 | pkt_dev->max_pkt_size = value; | |
963 | pkt_dev->cur_pkt_size = value; | |
964 | } | |
1da177e4 LT |
965 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
966 | return count; | |
967 | } | |
968 | ||
222f1806 | 969 | if (!strcmp(name, "debug")) { |
1da177e4 | 970 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 971 | if (len < 0) |
222f1806 | 972 | return len; |
63adc6fb | 973 | |
1da177e4 | 974 | i += len; |
222f1806 | 975 | debug = value; |
1da177e4 LT |
976 | sprintf(pg_result, "OK: debug=%u", debug); |
977 | return count; | |
978 | } | |
979 | ||
222f1806 | 980 | if (!strcmp(name, "frags")) { |
1da177e4 | 981 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 982 | if (len < 0) |
222f1806 | 983 | return len; |
63adc6fb | 984 | |
1da177e4 LT |
985 | i += len; |
986 | pkt_dev->nfrags = value; | |
987 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
988 | return count; | |
989 | } | |
990 | if (!strcmp(name, "delay")) { | |
991 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 992 | if (len < 0) |
222f1806 | 993 | return len; |
63adc6fb | 994 | |
1da177e4 | 995 | i += len; |
fd29cf72 SH |
996 | if (value == 0x7FFFFFFF) |
997 | pkt_dev->delay = ULLONG_MAX; | |
998 | else | |
9240d715 | 999 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
1000 | |
1001 | sprintf(pg_result, "OK: delay=%llu", | |
1002 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
1003 | return count; |
1004 | } | |
43d28b65 DT |
1005 | if (!strcmp(name, "rate")) { |
1006 | len = num_arg(&user_buffer[i], 10, &value); | |
1007 | if (len < 0) | |
1008 | return len; | |
1009 | ||
1010 | i += len; | |
1011 | if (!value) | |
1012 | return len; | |
1013 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
1014 | if (debug) | |
f9467eae | 1015 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1016 | |
1017 | sprintf(pg_result, "OK: rate=%lu", value); | |
1018 | return count; | |
1019 | } | |
1020 | if (!strcmp(name, "ratep")) { | |
1021 | len = num_arg(&user_buffer[i], 10, &value); | |
1022 | if (len < 0) | |
1023 | return len; | |
1024 | ||
1025 | i += len; | |
1026 | if (!value) | |
1027 | return len; | |
1028 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1029 | if (debug) | |
f9467eae | 1030 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1031 | |
1032 | sprintf(pg_result, "OK: rate=%lu", value); | |
1033 | return count; | |
1034 | } | |
222f1806 | 1035 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1036 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1037 | if (len < 0) |
222f1806 | 1038 | return len; |
63adc6fb | 1039 | |
1da177e4 | 1040 | i += len; |
222f1806 LC |
1041 | if (value != pkt_dev->udp_src_min) { |
1042 | pkt_dev->udp_src_min = value; | |
1043 | pkt_dev->cur_udp_src = value; | |
1044 | } | |
1da177e4 LT |
1045 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1046 | return count; | |
1047 | } | |
222f1806 | 1048 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1049 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1050 | if (len < 0) |
222f1806 | 1051 | return len; |
63adc6fb | 1052 | |
1da177e4 | 1053 | i += len; |
222f1806 LC |
1054 | if (value != pkt_dev->udp_dst_min) { |
1055 | pkt_dev->udp_dst_min = value; | |
1056 | pkt_dev->cur_udp_dst = value; | |
1057 | } | |
1da177e4 LT |
1058 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1059 | return count; | |
1060 | } | |
222f1806 | 1061 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1062 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1063 | if (len < 0) |
222f1806 | 1064 | return len; |
63adc6fb | 1065 | |
1da177e4 | 1066 | i += len; |
222f1806 LC |
1067 | if (value != pkt_dev->udp_src_max) { |
1068 | pkt_dev->udp_src_max = value; | |
1069 | pkt_dev->cur_udp_src = value; | |
1070 | } | |
1da177e4 LT |
1071 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1072 | return count; | |
1073 | } | |
222f1806 | 1074 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1075 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1076 | if (len < 0) |
222f1806 | 1077 | return len; |
63adc6fb | 1078 | |
1da177e4 | 1079 | i += len; |
222f1806 LC |
1080 | if (value != pkt_dev->udp_dst_max) { |
1081 | pkt_dev->udp_dst_max = value; | |
1082 | pkt_dev->cur_udp_dst = value; | |
1083 | } | |
1da177e4 LT |
1084 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1085 | return count; | |
1086 | } | |
1087 | if (!strcmp(name, "clone_skb")) { | |
1088 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1089 | if (len < 0) |
222f1806 | 1090 | return len; |
d8873315 | 1091 | if ((value > 0) && |
62f64aed AS |
1092 | ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) || |
1093 | !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
d8873315 | 1094 | return -ENOTSUPP; |
1da177e4 | 1095 | i += len; |
222f1806 LC |
1096 | pkt_dev->clone_skb = value; |
1097 | ||
1da177e4 LT |
1098 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1099 | return count; | |
1100 | } | |
1101 | if (!strcmp(name, "count")) { | |
1102 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1103 | if (len < 0) |
222f1806 | 1104 | return len; |
63adc6fb | 1105 | |
1da177e4 LT |
1106 | i += len; |
1107 | pkt_dev->count = value; | |
1108 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1109 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1110 | return count; |
1111 | } | |
1112 | if (!strcmp(name, "src_mac_count")) { | |
1113 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1114 | if (len < 0) |
222f1806 | 1115 | return len; |
63adc6fb | 1116 | |
1da177e4 LT |
1117 | i += len; |
1118 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1119 | pkt_dev->src_mac_count = value; |
1120 | pkt_dev->cur_src_mac_offset = 0; | |
1121 | } | |
1122 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1123 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1124 | return count; |
1125 | } | |
1126 | if (!strcmp(name, "dst_mac_count")) { | |
1127 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1128 | if (len < 0) |
222f1806 | 1129 | return len; |
63adc6fb | 1130 | |
1da177e4 LT |
1131 | i += len; |
1132 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1133 | pkt_dev->dst_mac_count = value; |
1134 | pkt_dev->cur_dst_mac_offset = 0; | |
1135 | } | |
1136 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1137 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1138 | return count; |
1139 | } | |
38b2cf29 AS |
1140 | if (!strcmp(name, "burst")) { |
1141 | len = num_arg(&user_buffer[i], 10, &value); | |
1142 | if (len < 0) | |
1143 | return len; | |
1144 | ||
1145 | i += len; | |
62f64aed | 1146 | if ((value > 1) && (pkt_dev->xmit_mode == M_START_XMIT) && |
52d6c8c6 ED |
1147 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) |
1148 | return -ENOTSUPP; | |
38b2cf29 AS |
1149 | pkt_dev->burst = value < 1 ? 1 : value; |
1150 | sprintf(pg_result, "OK: burst=%d", pkt_dev->burst); | |
1151 | return count; | |
1152 | } | |
e99b99b4 RO |
1153 | if (!strcmp(name, "node")) { |
1154 | len = num_arg(&user_buffer[i], 10, &value); | |
1155 | if (len < 0) | |
1156 | return len; | |
1157 | ||
1158 | i += len; | |
1159 | ||
1160 | if (node_possible(value)) { | |
1161 | pkt_dev->node = value; | |
1162 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1163 | if (pkt_dev->page) { |
1164 | put_page(pkt_dev->page); | |
1165 | pkt_dev->page = NULL; | |
1166 | } | |
e99b99b4 RO |
1167 | } |
1168 | else | |
1169 | sprintf(pg_result, "ERROR: node not possible"); | |
1170 | return count; | |
1171 | } | |
62f64aed AS |
1172 | if (!strcmp(name, "xmit_mode")) { |
1173 | char f[32]; | |
1174 | ||
1175 | memset(f, 0, 32); | |
1176 | len = strn_len(&user_buffer[i], sizeof(f) - 1); | |
1177 | if (len < 0) | |
1178 | return len; | |
1179 | ||
1180 | if (copy_from_user(f, &user_buffer[i], len)) | |
1181 | return -EFAULT; | |
1182 | i += len; | |
1183 | ||
1184 | if (strcmp(f, "start_xmit") == 0) { | |
1185 | pkt_dev->xmit_mode = M_START_XMIT; | |
1186 | } else if (strcmp(f, "netif_receive") == 0) { | |
1187 | /* clone_skb set earlier, not supported in this mode */ | |
1188 | if (pkt_dev->clone_skb > 0) | |
1189 | return -ENOTSUPP; | |
1190 | ||
1191 | pkt_dev->xmit_mode = M_NETIF_RECEIVE; | |
9eea9222 AS |
1192 | |
1193 | /* make sure new packet is allocated every time | |
1194 | * pktgen_xmit() is called | |
1195 | */ | |
1196 | pkt_dev->last_ok = 1; | |
1197 | ||
1198 | /* override clone_skb if user passed default value | |
1199 | * at module loading time | |
1200 | */ | |
1201 | pkt_dev->clone_skb = 0; | |
62f64aed AS |
1202 | } else { |
1203 | sprintf(pg_result, | |
1204 | "xmit_mode -:%s:- unknown\nAvailable modes: %s", | |
1205 | f, "start_xmit, netif_receive\n"); | |
1206 | return count; | |
1207 | } | |
1208 | sprintf(pg_result, "OK: xmit_mode=%s", f); | |
1209 | return count; | |
1210 | } | |
1da177e4 | 1211 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1212 | char f[32]; |
1213 | memset(f, 0, 32); | |
1da177e4 | 1214 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1215 | if (len < 0) |
222f1806 | 1216 | return len; |
63adc6fb | 1217 | |
1da177e4 LT |
1218 | if (copy_from_user(f, &user_buffer[i], len)) |
1219 | return -EFAULT; | |
1220 | i += len; | |
222f1806 LC |
1221 | if (strcmp(f, "IPSRC_RND") == 0) |
1222 | pkt_dev->flags |= F_IPSRC_RND; | |
1223 | ||
1224 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1225 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1226 | ||
1227 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1228 | pkt_dev->flags |= F_TXSIZE_RND; | |
1229 | ||
1230 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1231 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1232 | ||
1233 | else if (strcmp(f, "IPDST_RND") == 0) | |
1234 | pkt_dev->flags |= F_IPDST_RND; | |
1235 | ||
1236 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1237 | pkt_dev->flags &= ~F_IPDST_RND; | |
1238 | ||
1239 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1240 | pkt_dev->flags |= F_UDPSRC_RND; | |
1241 | ||
1242 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1243 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1244 | ||
1245 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1246 | pkt_dev->flags |= F_UDPDST_RND; | |
1247 | ||
1248 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1249 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1250 | ||
1251 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1252 | pkt_dev->flags |= F_MACSRC_RND; | |
1253 | ||
1254 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1255 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1256 | ||
1257 | else if (strcmp(f, "MACDST_RND") == 0) | |
1258 | pkt_dev->flags |= F_MACDST_RND; | |
1259 | ||
1260 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1261 | pkt_dev->flags &= ~F_MACDST_RND; | |
1262 | ||
ca6549af SW |
1263 | else if (strcmp(f, "MPLS_RND") == 0) |
1264 | pkt_dev->flags |= F_MPLS_RND; | |
1265 | ||
1266 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1267 | pkt_dev->flags &= ~F_MPLS_RND; | |
1268 | ||
34954ddc FF |
1269 | else if (strcmp(f, "VID_RND") == 0) |
1270 | pkt_dev->flags |= F_VID_RND; | |
1271 | ||
1272 | else if (strcmp(f, "!VID_RND") == 0) | |
1273 | pkt_dev->flags &= ~F_VID_RND; | |
1274 | ||
1275 | else if (strcmp(f, "SVID_RND") == 0) | |
1276 | pkt_dev->flags |= F_SVID_RND; | |
1277 | ||
1278 | else if (strcmp(f, "!SVID_RND") == 0) | |
1279 | pkt_dev->flags &= ~F_SVID_RND; | |
1280 | ||
007a531b JHS |
1281 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1282 | pkt_dev->flags |= F_FLOW_SEQ; | |
1283 | ||
45b270f8 RO |
1284 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1285 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1286 | ||
1287 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1288 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1289 | |
1290 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1291 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1292 | ||
1293 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1294 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1295 | #ifdef CONFIG_XFRM |
1296 | else if (strcmp(f, "IPSEC") == 0) | |
1297 | pkt_dev->flags |= F_IPSEC_ON; | |
1298 | #endif | |
1299 | ||
1ca7768c FF |
1300 | else if (strcmp(f, "!IPV6") == 0) |
1301 | pkt_dev->flags &= ~F_IPV6; | |
1302 | ||
e99b99b4 RO |
1303 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1304 | pkt_dev->flags |= F_NODE; | |
1305 | ||
1306 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1307 | pkt_dev->flags &= ~F_NODE; | |
1308 | ||
c26bf4a5 TG |
1309 | else if (strcmp(f, "UDPCSUM") == 0) |
1310 | pkt_dev->flags |= F_UDPCSUM; | |
1311 | ||
1312 | else if (strcmp(f, "!UDPCSUM") == 0) | |
1313 | pkt_dev->flags &= ~F_UDPCSUM; | |
1314 | ||
afb84b62 JDB |
1315 | else if (strcmp(f, "NO_TIMESTAMP") == 0) |
1316 | pkt_dev->flags |= F_NO_TIMESTAMP; | |
1317 | ||
f1f00d8f JDB |
1318 | else if (strcmp(f, "!NO_TIMESTAMP") == 0) |
1319 | pkt_dev->flags &= ~F_NO_TIMESTAMP; | |
1320 | ||
222f1806 LC |
1321 | else { |
1322 | sprintf(pg_result, | |
1323 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1324 | f, | |
1ca7768c | 1325 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
72f8e06f MK |
1326 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " |
1327 | "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " | |
1328 | "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " | |
afb84b62 | 1329 | "NO_TIMESTAMP, " |
72f8e06f MK |
1330 | #ifdef CONFIG_XFRM |
1331 | "IPSEC, " | |
1332 | #endif | |
1333 | "NODE_ALLOC\n"); | |
222f1806 LC |
1334 | return count; |
1335 | } | |
1da177e4 LT |
1336 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1337 | return count; | |
1338 | } | |
1339 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1340 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1341 | if (len < 0) |
222f1806 | 1342 | return len; |
1da177e4 | 1343 | |
222f1806 | 1344 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1345 | return -EFAULT; |
222f1806 LC |
1346 | buf[len] = 0; |
1347 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1348 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1349 | strncpy(pkt_dev->dst_min, buf, len); | |
1350 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1351 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1352 | } | |
1353 | if (debug) | |
f342cda7 | 1354 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1355 | i += len; |
1da177e4 LT |
1356 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1357 | return count; | |
1358 | } | |
1359 | if (!strcmp(name, "dst_max")) { | |
1360 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1361 | if (len < 0) |
222f1806 | 1362 | return len; |
63adc6fb | 1363 | |
1da177e4 | 1364 | |
222f1806 | 1365 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1366 | return -EFAULT; |
1367 | ||
222f1806 LC |
1368 | buf[len] = 0; |
1369 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1370 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1371 | strncpy(pkt_dev->dst_max, buf, len); | |
1372 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1373 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1374 | } | |
1375 | if (debug) | |
f342cda7 | 1376 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1377 | i += len; |
1378 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1379 | return count; | |
1380 | } | |
1381 | if (!strcmp(name, "dst6")) { | |
1382 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1383 | if (len < 0) |
1384 | return len; | |
1da177e4 LT |
1385 | |
1386 | pkt_dev->flags |= F_IPV6; | |
1387 | ||
222f1806 | 1388 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1389 | return -EFAULT; |
222f1806 | 1390 | buf[len] = 0; |
1da177e4 | 1391 | |
c468fb13 | 1392 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1393 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1394 | |
4e3fd7a0 | 1395 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1396 | |
222f1806 | 1397 | if (debug) |
f342cda7 | 1398 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1399 | |
222f1806 | 1400 | i += len; |
1da177e4 LT |
1401 | sprintf(pg_result, "OK: dst6=%s", buf); |
1402 | return count; | |
1403 | } | |
1404 | if (!strcmp(name, "dst6_min")) { | |
1405 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1406 | if (len < 0) |
1407 | return len; | |
1da177e4 LT |
1408 | |
1409 | pkt_dev->flags |= F_IPV6; | |
1410 | ||
222f1806 | 1411 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1412 | return -EFAULT; |
222f1806 | 1413 | buf[len] = 0; |
1da177e4 | 1414 | |
c468fb13 | 1415 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1416 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1417 | |
4e3fd7a0 | 1418 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1419 | if (debug) |
f342cda7 | 1420 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1421 | |
222f1806 | 1422 | i += len; |
1da177e4 LT |
1423 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1424 | return count; | |
1425 | } | |
1426 | if (!strcmp(name, "dst6_max")) { | |
1427 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1428 | if (len < 0) |
1429 | return len; | |
1da177e4 LT |
1430 | |
1431 | pkt_dev->flags |= F_IPV6; | |
1432 | ||
222f1806 | 1433 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1434 | return -EFAULT; |
222f1806 | 1435 | buf[len] = 0; |
1da177e4 | 1436 | |
c468fb13 | 1437 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1438 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1439 | |
222f1806 | 1440 | if (debug) |
f342cda7 | 1441 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1442 | |
222f1806 | 1443 | i += len; |
1da177e4 LT |
1444 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1445 | return count; | |
1446 | } | |
1447 | if (!strcmp(name, "src6")) { | |
1448 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1449 | if (len < 0) |
1450 | return len; | |
1da177e4 LT |
1451 | |
1452 | pkt_dev->flags |= F_IPV6; | |
1453 | ||
222f1806 | 1454 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1455 | return -EFAULT; |
222f1806 | 1456 | buf[len] = 0; |
1da177e4 | 1457 | |
c468fb13 | 1458 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1459 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1460 | |
4e3fd7a0 | 1461 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1462 | |
222f1806 | 1463 | if (debug) |
f342cda7 | 1464 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1465 | |
1466 | i += len; | |
1da177e4 LT |
1467 | sprintf(pg_result, "OK: src6=%s", buf); |
1468 | return count; | |
1469 | } | |
1470 | if (!strcmp(name, "src_min")) { | |
1471 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1472 | if (len < 0) |
222f1806 | 1473 | return len; |
63adc6fb | 1474 | |
222f1806 | 1475 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1476 | return -EFAULT; |
222f1806 LC |
1477 | buf[len] = 0; |
1478 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1479 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1480 | strncpy(pkt_dev->src_min, buf, len); | |
1481 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1482 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1483 | } | |
1484 | if (debug) | |
f342cda7 | 1485 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1486 | i += len; |
1487 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1488 | return count; | |
1489 | } | |
1490 | if (!strcmp(name, "src_max")) { | |
1491 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1492 | if (len < 0) |
222f1806 | 1493 | return len; |
63adc6fb | 1494 | |
222f1806 | 1495 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1496 | return -EFAULT; |
222f1806 LC |
1497 | buf[len] = 0; |
1498 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1499 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1500 | strncpy(pkt_dev->src_max, buf, len); | |
1501 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1502 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1503 | } | |
1504 | if (debug) | |
f342cda7 | 1505 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1506 | i += len; |
1507 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1508 | return count; | |
1509 | } | |
1510 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1511 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1512 | if (len < 0) |
222f1806 | 1513 | return len; |
63adc6fb | 1514 | |
1da177e4 | 1515 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1516 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1517 | return -EFAULT; |
1da177e4 | 1518 | |
4940fc88 AD |
1519 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1520 | return -EINVAL; | |
1da177e4 | 1521 | /* Set up Dest MAC */ |
9ea08b12 | 1522 | ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); |
222f1806 | 1523 | |
4940fc88 | 1524 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1525 | return count; |
1526 | } | |
1527 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1528 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1529 | if (len < 0) |
222f1806 | 1530 | return len; |
63adc6fb | 1531 | |
1da177e4 | 1532 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1533 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1534 | return -EFAULT; |
1da177e4 | 1535 | |
4940fc88 AD |
1536 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1537 | return -EINVAL; | |
ce5d0b47 | 1538 | /* Set up Src MAC */ |
9ea08b12 | 1539 | ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); |
ce5d0b47 | 1540 | |
4940fc88 | 1541 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1542 | return count; |
1543 | } | |
1544 | ||
222f1806 LC |
1545 | if (!strcmp(name, "clear_counters")) { |
1546 | pktgen_clear_counters(pkt_dev); | |
1547 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1548 | return count; | |
1549 | } | |
1da177e4 LT |
1550 | |
1551 | if (!strcmp(name, "flows")) { | |
1552 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1553 | if (len < 0) |
222f1806 | 1554 | return len; |
63adc6fb | 1555 | |
1da177e4 LT |
1556 | i += len; |
1557 | if (value > MAX_CFLOWS) | |
1558 | value = MAX_CFLOWS; | |
1559 | ||
1560 | pkt_dev->cflows = value; | |
1561 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1562 | return count; | |
1563 | } | |
6bae9190 | 1564 | #ifdef CONFIG_XFRM |
de4aee7d FD |
1565 | if (!strcmp(name, "spi")) { |
1566 | len = num_arg(&user_buffer[i], 10, &value); | |
1567 | if (len < 0) | |
1568 | return len; | |
1569 | ||
1570 | i += len; | |
1571 | pkt_dev->spi = value; | |
1572 | sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); | |
1573 | return count; | |
1574 | } | |
6bae9190 | 1575 | #endif |
1da177e4 LT |
1576 | if (!strcmp(name, "flowlen")) { |
1577 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1578 | if (len < 0) |
222f1806 | 1579 | return len; |
63adc6fb | 1580 | |
1da177e4 LT |
1581 | i += len; |
1582 | pkt_dev->lflow = value; | |
1583 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1584 | return count; | |
1585 | } | |
222f1806 | 1586 | |
45b270f8 RO |
1587 | if (!strcmp(name, "queue_map_min")) { |
1588 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1589 | if (len < 0) |
45b270f8 | 1590 | return len; |
63adc6fb | 1591 | |
45b270f8 RO |
1592 | i += len; |
1593 | pkt_dev->queue_map_min = value; | |
1594 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1595 | return count; | |
1596 | } | |
1597 | ||
1598 | if (!strcmp(name, "queue_map_max")) { | |
1599 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1600 | if (len < 0) |
45b270f8 | 1601 | return len; |
63adc6fb | 1602 | |
45b270f8 RO |
1603 | i += len; |
1604 | pkt_dev->queue_map_max = value; | |
1605 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1606 | return count; | |
1607 | } | |
1608 | ||
ca6549af | 1609 | if (!strcmp(name, "mpls")) { |
95c96174 | 1610 | unsigned int n, cnt; |
cfcabdcc | 1611 | |
ca6549af | 1612 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1613 | if (len < 0) |
1614 | return len; | |
ca6549af | 1615 | i += len; |
cfcabdcc | 1616 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1617 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1618 | cnt += sprintf(pg_result + cnt, |
1619 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1620 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1621 | |
1622 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1623 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1624 | pkt_dev->svlan_id = 0xffff; | |
1625 | ||
1626 | if (debug) | |
f342cda7 | 1627 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1628 | } |
1629 | return count; | |
1630 | } | |
1631 | ||
1632 | if (!strcmp(name, "vlan_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) { | |
1639 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1640 | ||
1641 | if (debug) | |
f342cda7 | 1642 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1643 | |
1644 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1645 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1646 | |
1647 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1648 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1649 | } else { | |
1650 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1651 | pkt_dev->svlan_id = 0xffff; | |
1652 | ||
1653 | if (debug) | |
f342cda7 | 1654 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1655 | } |
1656 | return count; | |
1657 | } | |
1658 | ||
1659 | if (!strcmp(name, "vlan_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->vlan_id != 0xffff)) { | |
1666 | pkt_dev->vlan_p = value; | |
1667 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1668 | } else { | |
1669 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1670 | } | |
1671 | return count; | |
1672 | } | |
1673 | ||
1674 | if (!strcmp(name, "vlan_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->vlan_id != 0xffff)) { | |
1681 | pkt_dev->vlan_cfi = value; | |
1682 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1683 | } else { | |
1684 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1685 | } | |
1686 | return count; | |
1687 | } | |
1688 | ||
1689 | if (!strcmp(name, "svlan_id")) { | |
1690 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1691 | if (len < 0) |
34954ddc | 1692 | return len; |
63adc6fb | 1693 | |
34954ddc FF |
1694 | i += len; |
1695 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1696 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1697 | ||
1698 | if (debug) | |
f342cda7 | 1699 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1700 | |
1701 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1702 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1703 | |
1704 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1705 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1706 | } else { | |
1707 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1708 | pkt_dev->svlan_id = 0xffff; | |
1709 | ||
1710 | if (debug) | |
f342cda7 | 1711 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1712 | } |
1713 | return count; | |
1714 | } | |
1715 | ||
1716 | if (!strcmp(name, "svlan_p")) { | |
1717 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1718 | if (len < 0) |
34954ddc | 1719 | return len; |
63adc6fb | 1720 | |
34954ddc FF |
1721 | i += len; |
1722 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1723 | pkt_dev->svlan_p = value; | |
1724 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1725 | } else { | |
1726 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1727 | } | |
1728 | return count; | |
1729 | } | |
1730 | ||
1731 | if (!strcmp(name, "svlan_cfi")) { | |
1732 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1733 | if (len < 0) |
34954ddc | 1734 | return len; |
63adc6fb | 1735 | |
34954ddc FF |
1736 | i += len; |
1737 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1738 | pkt_dev->svlan_cfi = value; | |
1739 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1740 | } else { | |
1741 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1742 | } | |
ca6549af SW |
1743 | return count; |
1744 | } | |
1745 | ||
1ca7768c FF |
1746 | if (!strcmp(name, "tos")) { |
1747 | __u32 tmp_value = 0; | |
1748 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1749 | if (len < 0) |
1ca7768c | 1750 | return len; |
63adc6fb | 1751 | |
1ca7768c FF |
1752 | i += len; |
1753 | if (len == 2) { | |
1754 | pkt_dev->tos = tmp_value; | |
1755 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1756 | } else { | |
1757 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1758 | } | |
1759 | return count; | |
1760 | } | |
1761 | ||
1762 | if (!strcmp(name, "traffic_class")) { | |
1763 | __u32 tmp_value = 0; | |
1764 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1765 | if (len < 0) |
1ca7768c | 1766 | return len; |
63adc6fb | 1767 | |
1ca7768c FF |
1768 | i += len; |
1769 | if (len == 2) { | |
1770 | pkt_dev->traffic_class = tmp_value; | |
1771 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1772 | } else { | |
1773 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1774 | } | |
1775 | return count; | |
1776 | } | |
1777 | ||
9e50e3ac JF |
1778 | if (!strcmp(name, "skb_priority")) { |
1779 | len = num_arg(&user_buffer[i], 9, &value); | |
1780 | if (len < 0) | |
1781 | return len; | |
1782 | ||
1783 | i += len; | |
1784 | pkt_dev->skb_priority = value; | |
1785 | sprintf(pg_result, "OK: skb_priority=%i", | |
1786 | pkt_dev->skb_priority); | |
1787 | return count; | |
1788 | } | |
1789 | ||
1da177e4 LT |
1790 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1791 | return -EINVAL; | |
1792 | } | |
1793 | ||
d50a6b56 | 1794 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1795 | { |
d9dda78b | 1796 | return single_open(file, pktgen_if_show, PDE_DATA(inode)); |
d50a6b56 | 1797 | } |
1da177e4 | 1798 | |
9a32144e | 1799 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1800 | .owner = THIS_MODULE, |
1801 | .open = pktgen_if_open, | |
1802 | .read = seq_read, | |
1803 | .llseek = seq_lseek, | |
1804 | .write = pktgen_if_write, | |
1805 | .release = single_release, | |
d50a6b56 | 1806 | }; |
1da177e4 | 1807 | |
d50a6b56 SH |
1808 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1809 | { | |
222f1806 | 1810 | struct pktgen_thread *t = seq->private; |
648fda74 | 1811 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1812 | |
1813 | BUG_ON(!t); | |
1da177e4 | 1814 | |
97dc48e2 | 1815 | seq_puts(seq, "Running: "); |
1da177e4 | 1816 | |
8788370a JDB |
1817 | rcu_read_lock(); |
1818 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
222f1806 | 1819 | if (pkt_dev->running) |
593f63b0 | 1820 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1821 | |
97dc48e2 | 1822 | seq_puts(seq, "\nStopped: "); |
222f1806 | 1823 | |
8788370a | 1824 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) |
222f1806 | 1825 | if (!pkt_dev->running) |
593f63b0 | 1826 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1827 | |
1828 | if (t->result[0]) | |
d50a6b56 | 1829 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1830 | else |
97dc48e2 | 1831 | seq_puts(seq, "\nResult: NA\n"); |
1da177e4 | 1832 | |
8788370a | 1833 | rcu_read_unlock(); |
1da177e4 | 1834 | |
d50a6b56 | 1835 | return 0; |
1da177e4 LT |
1836 | } |
1837 | ||
d50a6b56 | 1838 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1839 | const char __user * user_buffer, |
1840 | size_t count, loff_t * offset) | |
1da177e4 | 1841 | { |
8a994a71 | 1842 | struct seq_file *seq = file->private_data; |
222f1806 | 1843 | struct pktgen_thread *t = seq->private; |
d6182223 | 1844 | int i, max, len, ret; |
1da177e4 | 1845 | char name[40]; |
222f1806 | 1846 | char *pg_result; |
d50a6b56 | 1847 | |
1da177e4 | 1848 | if (count < 1) { |
222f1806 | 1849 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1850 | return -EINVAL; |
1851 | } | |
d50a6b56 | 1852 | |
d6182223 PG |
1853 | max = count; |
1854 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1855 | if (len < 0) |
d50a6b56 SH |
1856 | return len; |
1857 | ||
d6182223 | 1858 | i = len; |
d50a6b56 | 1859 | |
1da177e4 LT |
1860 | /* Read variable name */ |
1861 | ||
1862 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1863 | if (len < 0) |
d50a6b56 | 1864 | return len; |
222f1806 | 1865 | |
1da177e4 LT |
1866 | memset(name, 0, sizeof(name)); |
1867 | if (copy_from_user(name, &user_buffer[i], len)) | |
1868 | return -EFAULT; | |
1869 | i += len; | |
d50a6b56 | 1870 | |
222f1806 | 1871 | max = count - i; |
1da177e4 | 1872 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1873 | if (len < 0) |
d50a6b56 SH |
1874 | return len; |
1875 | ||
1da177e4 LT |
1876 | i += len; |
1877 | ||
d50a6b56 | 1878 | if (debug) |
f342cda7 | 1879 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1880 | |
222f1806 | 1881 | if (!t) { |
f9467eae | 1882 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1883 | ret = -EINVAL; |
1884 | goto out; | |
1885 | } | |
1886 | ||
1887 | pg_result = &(t->result[0]); | |
1888 | ||
222f1806 LC |
1889 | if (!strcmp(name, "add_device")) { |
1890 | char f[32]; | |
1891 | memset(f, 0, 32); | |
1da177e4 | 1892 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1893 | if (len < 0) { |
1894 | ret = len; | |
1da177e4 LT |
1895 | goto out; |
1896 | } | |
222f1806 | 1897 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1898 | return -EFAULT; |
1899 | i += len; | |
6146e6a4 | 1900 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1901 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1902 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1903 | if (!ret) { |
1904 | ret = count; | |
1905 | sprintf(pg_result, "OK: add_device=%s", f); | |
1906 | } else | |
1907 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1908 | goto out; |
1909 | } | |
1910 | ||
222f1806 | 1911 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1912 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1913 | t->control |= T_REMDEVALL; |
6146e6a4 | 1914 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1915 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1916 | ret = count; |
222f1806 | 1917 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1918 | goto out; |
1919 | } | |
1920 | ||
222f1806 | 1921 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1922 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1923 | ret = count; |
1da177e4 LT |
1924 | goto out; |
1925 | } | |
1926 | ||
1927 | ret = -EINVAL; | |
222f1806 | 1928 | out: |
1da177e4 LT |
1929 | return ret; |
1930 | } | |
1931 | ||
d50a6b56 | 1932 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1933 | { |
d9dda78b | 1934 | return single_open(file, pktgen_thread_show, PDE_DATA(inode)); |
1da177e4 LT |
1935 | } |
1936 | ||
9a32144e | 1937 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1938 | .owner = THIS_MODULE, |
1939 | .open = pktgen_thread_open, | |
1940 | .read = seq_read, | |
1941 | .llseek = seq_lseek, | |
1942 | .write = pktgen_thread_write, | |
1943 | .release = single_release, | |
d50a6b56 | 1944 | }; |
1da177e4 LT |
1945 | |
1946 | /* Think find or remove for NN */ | |
4e58a027 CW |
1947 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1948 | const char *ifname, int remove) | |
1da177e4 LT |
1949 | { |
1950 | struct pktgen_thread *t; | |
1951 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1952 | bool exact = (remove == FIND); |
1da177e4 | 1953 | |
4e58a027 | 1954 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1955 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1956 | if (pkt_dev) { |
222f1806 | 1957 | if (remove) { |
222f1806 LC |
1958 | pkt_dev->removal_mark = 1; |
1959 | t->control |= T_REMDEV; | |
222f1806 | 1960 | } |
1da177e4 LT |
1961 | break; |
1962 | } | |
1da177e4 | 1963 | } |
222f1806 | 1964 | return pkt_dev; |
1da177e4 LT |
1965 | } |
1966 | ||
95ed63f7 AK |
1967 | /* |
1968 | * mark a device for removal | |
1969 | */ | |
4e58a027 | 1970 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1971 | { |
1972 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1973 | const int max_tries = 10, msec_per_try = 125; |
1974 | int i = 0; | |
95ed63f7 | 1975 | |
6146e6a4 | 1976 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1977 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1978 | |
222f1806 | 1979 | while (1) { |
95ed63f7 | 1980 | |
4e58a027 | 1981 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1982 | if (pkt_dev == NULL) |
1983 | break; /* success */ | |
95ed63f7 | 1984 | |
6146e6a4 | 1985 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1986 | pr_debug("%s: waiting for %s to disappear....\n", |
1987 | __func__, ifname); | |
95ed63f7 | 1988 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1989 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1990 | |
1991 | if (++i >= max_tries) { | |
f9467eae JP |
1992 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1993 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1994 | break; |
1995 | } | |
1996 | ||
1997 | } | |
1998 | ||
6146e6a4 | 1999 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 2000 | } |
95ed63f7 | 2001 | |
4e58a027 | 2002 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
2003 | { |
2004 | struct pktgen_thread *t; | |
2005 | ||
4e58a027 | 2006 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
2007 | struct pktgen_dev *pkt_dev; |
2008 | ||
8788370a JDB |
2009 | rcu_read_lock(); |
2010 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
39df232f SH |
2011 | if (pkt_dev->odev != dev) |
2012 | continue; | |
2013 | ||
a8ca16ea | 2014 | proc_remove(pkt_dev->entry); |
39df232f | 2015 | |
2975315b | 2016 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 2017 | pn->proc_dir, |
2975315b AD |
2018 | &pktgen_if_fops, |
2019 | pkt_dev); | |
39df232f | 2020 | if (!pkt_dev->entry) |
f9467eae JP |
2021 | pr_err("can't move proc entry for '%s'\n", |
2022 | dev->name); | |
39df232f SH |
2023 | break; |
2024 | } | |
8788370a | 2025 | rcu_read_unlock(); |
39df232f | 2026 | } |
1da177e4 LT |
2027 | } |
2028 | ||
222f1806 LC |
2029 | static int pktgen_device_event(struct notifier_block *unused, |
2030 | unsigned long event, void *ptr) | |
1da177e4 | 2031 | { |
351638e7 | 2032 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
4e58a027 | 2033 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 2034 | |
4e58a027 | 2035 | if (pn->pktgen_exiting) |
e9dc8653 EB |
2036 | return NOTIFY_DONE; |
2037 | ||
1da177e4 LT |
2038 | /* It is OK that we do not hold the group lock right now, |
2039 | * as we run under the RTNL lock. | |
2040 | */ | |
2041 | ||
2042 | switch (event) { | |
39df232f | 2043 | case NETDEV_CHANGENAME: |
4e58a027 | 2044 | pktgen_change_name(pn, dev); |
1da177e4 | 2045 | break; |
222f1806 | 2046 | |
1da177e4 | 2047 | case NETDEV_UNREGISTER: |
4e58a027 | 2048 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 2049 | break; |
3ff50b79 | 2050 | } |
1da177e4 LT |
2051 | |
2052 | return NOTIFY_DONE; | |
2053 | } | |
2054 | ||
4e58a027 CW |
2055 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
2056 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 2057 | const char *ifname) |
e6fce5b9 RO |
2058 | { |
2059 | char b[IFNAMSIZ+5]; | |
d6182223 | 2060 | int i; |
e6fce5b9 | 2061 | |
63adc6fb SH |
2062 | for (i = 0; ifname[i] != '@'; i++) { |
2063 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
2064 | break; |
2065 | ||
2066 | b[i] = ifname[i]; | |
2067 | } | |
2068 | b[i] = 0; | |
2069 | ||
4e58a027 | 2070 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
2071 | } |
2072 | ||
2073 | ||
1da177e4 LT |
2074 | /* Associate pktgen_dev with a device. */ |
2075 | ||
4e58a027 CW |
2076 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
2077 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 2078 | { |
1da177e4 | 2079 | struct net_device *odev; |
39df232f | 2080 | int err; |
1da177e4 LT |
2081 | |
2082 | /* Clean old setups */ | |
1da177e4 LT |
2083 | if (pkt_dev->odev) { |
2084 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2085 | pkt_dev->odev = NULL; |
2086 | } | |
1da177e4 | 2087 | |
4e58a027 | 2088 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 2089 | if (!odev) { |
f9467eae | 2090 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2091 | return -ENODEV; |
1da177e4 | 2092 | } |
39df232f | 2093 | |
1da177e4 | 2094 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2095 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2096 | err = -EINVAL; |
2097 | } else if (!netif_running(odev)) { | |
f9467eae | 2098 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2099 | err = -ENETDOWN; |
2100 | } else { | |
2101 | pkt_dev->odev = odev; | |
2102 | return 0; | |
1da177e4 | 2103 | } |
1da177e4 | 2104 | |
1da177e4 | 2105 | dev_put(odev); |
39df232f | 2106 | return err; |
1da177e4 LT |
2107 | } |
2108 | ||
2109 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2110 | * structure to have the right information to create/send packets | |
2111 | */ | |
2112 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2113 | { | |
64c00d81 AG |
2114 | int ntxq; |
2115 | ||
222f1806 | 2116 | if (!pkt_dev->odev) { |
f9467eae | 2117 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2118 | sprintf(pkt_dev->result, |
2119 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2120 | return; | |
2121 | } | |
2122 | ||
64c00d81 AG |
2123 | /* make sure that we don't pick a non-existing transmit queue */ |
2124 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2125 | |
64c00d81 | 2126 | if (ntxq <= pkt_dev->queue_map_min) { |
294a0b7f JP |
2127 | pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2128 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2129 | pkt_dev->odevname); | |
26e29eed | 2130 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2131 | } |
88271660 | 2132 | if (pkt_dev->queue_map_max >= ntxq) { |
294a0b7f JP |
2133 | pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2134 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2135 | pkt_dev->odevname); | |
26e29eed | 2136 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2137 | } |
2138 | ||
222f1806 | 2139 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2140 | |
f404e9a6 | 2141 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
9ea08b12 | 2142 | ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); |
1da177e4 | 2143 | |
222f1806 | 2144 | /* Set up Dest MAC */ |
9ea08b12 | 2145 | ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); |
1da177e4 | 2146 | |
222f1806 | 2147 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2148 | int i, set = 0, err = 1; |
2149 | struct inet6_dev *idev; | |
2150 | ||
68bf9f0b AW |
2151 | if (pkt_dev->min_pkt_size == 0) { |
2152 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2153 | + sizeof(struct udphdr) | |
2154 | + sizeof(struct pktgen_hdr) | |
2155 | + pkt_dev->pkt_overhead; | |
2156 | } | |
2157 | ||
222f1806 LC |
2158 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2159 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2160 | set = 1; |
2161 | break; | |
2162 | } | |
2163 | ||
222f1806 LC |
2164 | if (!set) { |
2165 | ||
1da177e4 LT |
2166 | /* |
2167 | * Use linklevel address if unconfigured. | |
2168 | * | |
2169 | * use ipv6_get_lladdr if/when it's get exported | |
2170 | */ | |
2171 | ||
8814c4b5 | 2172 | rcu_read_lock(); |
63adc6fb SH |
2173 | idev = __in6_dev_get(pkt_dev->odev); |
2174 | if (idev) { | |
1da177e4 LT |
2175 | struct inet6_ifaddr *ifp; |
2176 | ||
2177 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2178 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2179 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2180 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2181 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2182 | err = 0; |
2183 | break; | |
2184 | } | |
2185 | } | |
2186 | read_unlock_bh(&idev->lock); | |
2187 | } | |
8814c4b5 | 2188 | rcu_read_unlock(); |
222f1806 | 2189 | if (err) |
f9467eae | 2190 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2191 | } |
222f1806 | 2192 | } else { |
68bf9f0b AW |
2193 | if (pkt_dev->min_pkt_size == 0) { |
2194 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2195 | + sizeof(struct udphdr) | |
2196 | + sizeof(struct pktgen_hdr) | |
2197 | + pkt_dev->pkt_overhead; | |
2198 | } | |
2199 | ||
1da177e4 LT |
2200 | pkt_dev->saddr_min = 0; |
2201 | pkt_dev->saddr_max = 0; | |
2202 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2203 | |
2204 | struct in_device *in_dev; | |
1da177e4 LT |
2205 | |
2206 | rcu_read_lock(); | |
e5ed6399 | 2207 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2208 | if (in_dev) { |
2209 | if (in_dev->ifa_list) { | |
222f1806 LC |
2210 | pkt_dev->saddr_min = |
2211 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2212 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2213 | } | |
1da177e4 LT |
2214 | } |
2215 | rcu_read_unlock(); | |
222f1806 | 2216 | } else { |
1da177e4 LT |
2217 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2218 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2219 | } | |
2220 | ||
2221 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2222 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2223 | } | |
222f1806 | 2224 | /* Initialize current values. */ |
68bf9f0b AW |
2225 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2226 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2227 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2228 | ||
222f1806 LC |
2229 | pkt_dev->cur_dst_mac_offset = 0; |
2230 | pkt_dev->cur_src_mac_offset = 0; | |
2231 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2232 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2233 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2234 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2235 | pkt_dev->nflows = 0; |
2236 | } | |
2237 | ||
fd29cf72 SH |
2238 | |
2239 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2240 | { | |
ef87979c | 2241 | ktime_t start_time, end_time; |
417bc4b8 | 2242 | s64 remaining; |
2bc481cf SH |
2243 | struct hrtimer_sleeper t; |
2244 | ||
2245 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2246 | hrtimer_set_expires(&t.timer, spin_until); | |
2247 | ||
43d28b65 | 2248 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2249 | if (remaining <= 0) { |
2250 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2251 | return; |
417bc4b8 | 2252 | } |
2bc481cf | 2253 | |
398f382c | 2254 | start_time = ktime_get(); |
33136d12 ED |
2255 | if (remaining < 100000) { |
2256 | /* for small delays (<100us), just loop until limit is reached */ | |
2257 | do { | |
398f382c DB |
2258 | end_time = ktime_get(); |
2259 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2260 | } else { |
2bc481cf SH |
2261 | /* see do_nanosleep */ |
2262 | hrtimer_init_sleeper(&t, current); | |
2263 | do { | |
2264 | set_current_state(TASK_INTERRUPTIBLE); | |
2265 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2266 | if (!hrtimer_active(&t.timer)) | |
2267 | t.task = NULL; | |
2268 | ||
2269 | if (likely(t.task)) | |
1da177e4 | 2270 | schedule(); |
1da177e4 | 2271 | |
2bc481cf SH |
2272 | hrtimer_cancel(&t.timer); |
2273 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2274 | __set_current_state(TASK_RUNNING); | |
398f382c | 2275 | end_time = ktime_get(); |
1da177e4 | 2276 | } |
ef87979c SH |
2277 | |
2278 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2279 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2280 | } |
2281 | ||
16dab72f JHS |
2282 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2283 | { | |
a553e4a6 | 2284 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2285 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2286 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2287 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2288 | } | |
2289 | ||
648fda74 | 2290 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2291 | { |
648fda74 | 2292 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2293 | } |
2294 | ||
2295 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2296 | { | |
2297 | int flow = pkt_dev->curfl; | |
2298 | ||
2299 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2300 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2301 | /* reset time */ | |
2302 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2303 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2304 | pkt_dev->curfl += 1; |
2305 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2306 | pkt_dev->curfl = 0; /*reset */ | |
2307 | } | |
2308 | } else { | |
33d7c5e5 | 2309 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2310 | pkt_dev->curfl = flow; |
007a531b | 2311 | |
1211a645 | 2312 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2313 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2314 | pkt_dev->flows[flow].flags = 0; |
2315 | } | |
007a531b JHS |
2316 | } |
2317 | ||
2318 | return pkt_dev->curfl; | |
2319 | } | |
2320 | ||
a553e4a6 JHS |
2321 | |
2322 | #ifdef CONFIG_XFRM | |
2323 | /* If there was already an IPSEC SA, we keep it as is, else | |
2324 | * we go look for it ... | |
2325 | */ | |
bd55775c | 2326 | #define DUMMY_MARK 0 |
fea1ab0f | 2327 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2328 | { |
2329 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2330 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 | 2331 | if (!x) { |
c454997e FD |
2332 | |
2333 | if (pkt_dev->spi) { | |
2334 | /* We need as quick as possible to find the right SA | |
2335 | * Searching with minimum criteria to archieve this. | |
2336 | */ | |
2337 | x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); | |
2338 | } else { | |
2339 | /* slow path: we dont already have xfrm_state */ | |
2340 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, | |
2341 | (xfrm_address_t *)&pkt_dev->cur_daddr, | |
2342 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2343 | AF_INET, | |
2344 | pkt_dev->ipsmode, | |
2345 | pkt_dev->ipsproto, 0); | |
2346 | } | |
a553e4a6 JHS |
2347 | if (x) { |
2348 | pkt_dev->flows[flow].x = x; | |
2349 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2350 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2351 | } |
2352 | ||
2353 | } | |
2354 | } | |
2355 | #endif | |
fd2ea0a7 DM |
2356 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2357 | { | |
e6fce5b9 RO |
2358 | |
2359 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2360 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2361 | ||
896a7cf8 | 2362 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2363 | __u16 t; |
2364 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2365 | t = prandom_u32() % |
fd2ea0a7 DM |
2366 | (pkt_dev->queue_map_max - |
2367 | pkt_dev->queue_map_min + 1) | |
2368 | + pkt_dev->queue_map_min; | |
2369 | } else { | |
2370 | t = pkt_dev->cur_queue_map + 1; | |
2371 | if (t > pkt_dev->queue_map_max) | |
2372 | t = pkt_dev->queue_map_min; | |
2373 | } | |
2374 | pkt_dev->cur_queue_map = t; | |
2375 | } | |
bfdbc0ac | 2376 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2377 | } |
2378 | ||
1da177e4 LT |
2379 | /* Increment/randomize headers according to flags and current values |
2380 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2381 | */ | |
222f1806 LC |
2382 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2383 | { | |
2384 | __u32 imn; | |
2385 | __u32 imx; | |
2386 | int flow = 0; | |
1da177e4 | 2387 | |
007a531b JHS |
2388 | if (pkt_dev->cflows) |
2389 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2390 | |
2391 | /* Deal with source MAC */ | |
222f1806 LC |
2392 | if (pkt_dev->src_mac_count > 1) { |
2393 | __u32 mc; | |
2394 | __u32 tmp; | |
2395 | ||
2396 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2397 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2398 | else { |
2399 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2400 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2401 | pkt_dev->src_mac_count) |
2402 | pkt_dev->cur_src_mac_offset = 0; | |
2403 | } | |
2404 | ||
2405 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2406 | pkt_dev->hh[11] = tmp; | |
2407 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2408 | pkt_dev->hh[10] = tmp; | |
2409 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2410 | pkt_dev->hh[9] = tmp; | |
2411 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2412 | pkt_dev->hh[8] = tmp; | |
2413 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2414 | pkt_dev->hh[7] = tmp; | |
2415 | } | |
2416 | ||
2417 | /* Deal with Destination MAC */ | |
2418 | if (pkt_dev->dst_mac_count > 1) { | |
2419 | __u32 mc; | |
2420 | __u32 tmp; | |
2421 | ||
2422 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2423 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2424 | |
2425 | else { | |
2426 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2427 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2428 | pkt_dev->dst_mac_count) { |
2429 | pkt_dev->cur_dst_mac_offset = 0; | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2434 | pkt_dev->hh[5] = tmp; | |
2435 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2436 | pkt_dev->hh[4] = tmp; | |
2437 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2438 | pkt_dev->hh[3] = tmp; | |
2439 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2440 | pkt_dev->hh[2] = tmp; | |
2441 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2442 | pkt_dev->hh[1] = tmp; | |
2443 | } | |
2444 | ||
ca6549af | 2445 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2446 | unsigned int i; |
e71a4783 | 2447 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2448 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2449 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2450 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2451 | htonl(0x000fffff)); |
2452 | } | |
2453 | ||
34954ddc | 2454 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2455 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2456 | } |
2457 | ||
2458 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2459 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2460 | } |
2461 | ||
222f1806 LC |
2462 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2463 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2464 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2465 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2466 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2467 | |
2468 | else { | |
1da177e4 LT |
2469 | pkt_dev->cur_udp_src++; |
2470 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2471 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2472 | } |
2473 | } | |
2474 | ||
2475 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2476 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2477 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2478 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2479 | + pkt_dev->udp_dst_min; | |
222f1806 | 2480 | } else { |
1da177e4 | 2481 | pkt_dev->cur_udp_dst++; |
222f1806 | 2482 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2483 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2484 | } |
2485 | } | |
1da177e4 LT |
2486 | |
2487 | if (!(pkt_dev->flags & F_IPV6)) { | |
2488 | ||
63adc6fb SH |
2489 | imn = ntohl(pkt_dev->saddr_min); |
2490 | imx = ntohl(pkt_dev->saddr_max); | |
2491 | if (imn < imx) { | |
1da177e4 | 2492 | __u32 t; |
222f1806 | 2493 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2494 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2495 | else { |
2496 | t = ntohl(pkt_dev->cur_saddr); | |
2497 | t++; | |
63adc6fb | 2498 | if (t > imx) |
1da177e4 | 2499 | t = imn; |
63adc6fb | 2500 | |
1da177e4 LT |
2501 | } |
2502 | pkt_dev->cur_saddr = htonl(t); | |
2503 | } | |
222f1806 | 2504 | |
007a531b | 2505 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2506 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2507 | } else { | |
252e3346 AV |
2508 | imn = ntohl(pkt_dev->daddr_min); |
2509 | imx = ntohl(pkt_dev->daddr_max); | |
2510 | if (imn < imx) { | |
1da177e4 | 2511 | __u32 t; |
252e3346 | 2512 | __be32 s; |
1da177e4 LT |
2513 | if (pkt_dev->flags & F_IPDST_RND) { |
2514 | ||
70e3ba72 | 2515 | do { |
33d7c5e5 AM |
2516 | t = prandom_u32() % |
2517 | (imx - imn) + imn; | |
252e3346 | 2518 | s = htonl(t); |
70e3ba72 AM |
2519 | } while (ipv4_is_loopback(s) || |
2520 | ipv4_is_multicast(s) || | |
2521 | ipv4_is_lbcast(s) || | |
2522 | ipv4_is_zeronet(s) || | |
2523 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2524 | pkt_dev->cur_daddr = s; |
2525 | } else { | |
1da177e4 LT |
2526 | t = ntohl(pkt_dev->cur_daddr); |
2527 | t++; | |
2528 | if (t > imx) { | |
2529 | t = imn; | |
2530 | } | |
2531 | pkt_dev->cur_daddr = htonl(t); | |
2532 | } | |
2533 | } | |
222f1806 | 2534 | if (pkt_dev->cflows) { |
007a531b | 2535 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2536 | pkt_dev->flows[flow].cur_daddr = |
2537 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2538 | #ifdef CONFIG_XFRM |
2539 | if (pkt_dev->flags & F_IPSEC_ON) | |
2540 | get_ipsec_sa(pkt_dev, flow); | |
2541 | #endif | |
1da177e4 LT |
2542 | pkt_dev->nflows++; |
2543 | } | |
2544 | } | |
222f1806 LC |
2545 | } else { /* IPV6 * */ |
2546 | ||
06e30411 | 2547 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2548 | int i; |
2549 | ||
2550 | /* Only random destinations yet */ | |
2551 | ||
222f1806 | 2552 | for (i = 0; i < 4; i++) { |
1da177e4 | 2553 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2554 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2555 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2556 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2557 | } |
222f1806 | 2558 | } |
1da177e4 LT |
2559 | } |
2560 | ||
222f1806 LC |
2561 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2562 | __u32 t; | |
2563 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2564 | t = prandom_u32() % |
5fa6fc76 SH |
2565 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2566 | + pkt_dev->min_pkt_size; | |
222f1806 | 2567 | } else { |
1da177e4 | 2568 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2569 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2570 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2571 | } |
2572 | pkt_dev->cur_pkt_size = t; | |
2573 | } | |
1da177e4 | 2574 | |
fd2ea0a7 | 2575 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2576 | |
1da177e4 LT |
2577 | pkt_dev->flows[flow].count++; |
2578 | } | |
2579 | ||
a553e4a6 JHS |
2580 | |
2581 | #ifdef CONFIG_XFRM | |
5537a055 | 2582 | static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { |
cf93d47e FD |
2583 | |
2584 | [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ | |
2585 | }; | |
2586 | ||
a553e4a6 JHS |
2587 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) |
2588 | { | |
2589 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2590 | int err = 0; | |
6de9ace4 | 2591 | struct net *net = dev_net(pkt_dev->odev); |
a553e4a6 JHS |
2592 | |
2593 | if (!x) | |
2594 | return 0; | |
2595 | /* XXX: we dont support tunnel mode for now until | |
2596 | * we resolve the dst issue */ | |
cf93d47e | 2597 | if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) |
a553e4a6 JHS |
2598 | return 0; |
2599 | ||
cf93d47e FD |
2600 | /* But when user specify an valid SPI, transformation |
2601 | * supports both transport/tunnel mode + ESP/AH type. | |
2602 | */ | |
2603 | if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) | |
2604 | skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF; | |
2605 | ||
2606 | rcu_read_lock_bh(); | |
13996378 | 2607 | err = x->outer_mode->output(x, skb); |
cf93d47e | 2608 | rcu_read_unlock_bh(); |
6de9ace4 FD |
2609 | if (err) { |
2610 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); | |
a553e4a6 | 2611 | goto error; |
6de9ace4 | 2612 | } |
a553e4a6 | 2613 | err = x->type->output(x, skb); |
6de9ace4 FD |
2614 | if (err) { |
2615 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); | |
a553e4a6 | 2616 | goto error; |
6de9ace4 | 2617 | } |
0af0a413 | 2618 | spin_lock_bh(&x->lock); |
63adc6fb | 2619 | x->curlft.bytes += skb->len; |
a553e4a6 | 2620 | x->curlft.packets++; |
0af0a413 | 2621 | spin_unlock_bh(&x->lock); |
a553e4a6 | 2622 | error: |
a553e4a6 JHS |
2623 | return err; |
2624 | } | |
2625 | ||
475ac1e4 | 2626 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2627 | { |
2628 | if (pkt_dev->cflows) { | |
2629 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2630 | int i; |
2631 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2632 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2633 | if (x) { | |
2634 | xfrm_state_put(x); | |
2635 | pkt_dev->flows[i].x = NULL; | |
2636 | } | |
2637 | } | |
2638 | } | |
2639 | } | |
2640 | ||
475ac1e4 | 2641 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2642 | struct sk_buff *skb, __be16 protocol) |
2643 | { | |
2644 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2645 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2646 | int nhead = 0; | |
2647 | if (x) { | |
2648 | int ret; | |
2649 | __u8 *eth; | |
3868204d | 2650 | struct iphdr *iph; |
2651 | ||
a553e4a6 | 2652 | nhead = x->props.header_len - skb_headroom(skb); |
63adc6fb | 2653 | if (nhead > 0) { |
a553e4a6 JHS |
2654 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2655 | if (ret < 0) { | |
f9467eae JP |
2656 | pr_err("Error expanding ipsec packet %d\n", |
2657 | ret); | |
b4bb4ac8 | 2658 | goto err; |
a553e4a6 JHS |
2659 | } |
2660 | } | |
2661 | ||
2662 | /* ipsec is not expecting ll header */ | |
2663 | skb_pull(skb, ETH_HLEN); | |
2664 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2665 | if (ret) { | |
f9467eae | 2666 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2667 | goto err; |
a553e4a6 JHS |
2668 | } |
2669 | /* restore ll */ | |
2670 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2671 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2672 | *(u16 *) ð[12] = protocol; |
3868204d | 2673 | |
2674 | /* Update IPv4 header len as well as checksum value */ | |
2675 | iph = ip_hdr(skb); | |
2676 | iph->tot_len = htons(skb->len - ETH_HLEN); | |
2677 | ip_send_check(iph); | |
a553e4a6 JHS |
2678 | } |
2679 | } | |
2680 | return 1; | |
b4bb4ac8 IJ |
2681 | err: |
2682 | kfree_skb(skb); | |
2683 | return 0; | |
a553e4a6 JHS |
2684 | } |
2685 | #endif | |
2686 | ||
ca6549af SW |
2687 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2688 | { | |
95c96174 | 2689 | unsigned int i; |
63adc6fb | 2690 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2691 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2692 | |
ca6549af SW |
2693 | mpls--; |
2694 | *mpls |= MPLS_STACK_BOTTOM; | |
2695 | } | |
2696 | ||
0f37c605 AV |
2697 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2698 | unsigned int prio) | |
2699 | { | |
2700 | return htons(id | (cfi << 12) | (prio << 13)); | |
2701 | } | |
2702 | ||
26ad7879 ED |
2703 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2704 | int datalen) | |
2705 | { | |
2706 | struct timeval timestamp; | |
2707 | struct pktgen_hdr *pgh; | |
2708 | ||
2709 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2710 | datalen -= sizeof(*pgh); | |
2711 | ||
2712 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2713 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2714 | } else { |
2715 | int frags = pkt_dev->nfrags; | |
2716 | int i, len; | |
7d36a991 | 2717 | int frag_len; |
26ad7879 ED |
2718 | |
2719 | ||
2720 | if (frags > MAX_SKB_FRAGS) | |
2721 | frags = MAX_SKB_FRAGS; | |
2722 | len = datalen - frags * PAGE_SIZE; | |
2723 | if (len > 0) { | |
2724 | memset(skb_put(skb, len), 0, len); | |
2725 | datalen = frags * PAGE_SIZE; | |
2726 | } | |
2727 | ||
2728 | i = 0; | |
7d36a991 | 2729 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2730 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2731 | while (datalen > 0) { |
2732 | if (unlikely(!pkt_dev->page)) { | |
2733 | int node = numa_node_id(); | |
2734 | ||
2735 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2736 | node = pkt_dev->node; | |
2737 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2738 | if (!pkt_dev->page) | |
2739 | break; | |
2740 | } | |
a0bec1cd | 2741 | get_page(pkt_dev->page); |
ea2ab693 | 2742 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2743 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2744 | /*last fragment, fill rest of data*/ |
2745 | if (i == (frags - 1)) | |
9e903e08 ED |
2746 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2747 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2748 | else |
9e903e08 ED |
2749 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2750 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2751 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2752 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2753 | i++; |
2754 | skb_shinfo(skb)->nr_frags = i; | |
2755 | } | |
26ad7879 ED |
2756 | } |
2757 | ||
2758 | /* Stamp the time, and sequence number, | |
2759 | * convert them to network byte order | |
2760 | */ | |
2761 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2762 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2763 | ||
afb84b62 JDB |
2764 | if (pkt_dev->flags & F_NO_TIMESTAMP) { |
2765 | pgh->tv_sec = 0; | |
2766 | pgh->tv_usec = 0; | |
2767 | } else { | |
2768 | do_gettimeofday(×tamp); | |
2769 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2770 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2771 | } | |
26ad7879 ED |
2772 | } |
2773 | ||
7a6e288d DB |
2774 | static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, |
2775 | struct pktgen_dev *pkt_dev, | |
2776 | unsigned int extralen) | |
2777 | { | |
2778 | struct sk_buff *skb = NULL; | |
2779 | unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen + | |
2780 | pkt_dev->pkt_overhead; | |
2781 | ||
2782 | if (pkt_dev->flags & F_NODE) { | |
2783 | int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); | |
2784 | ||
2785 | skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); | |
2786 | if (likely(skb)) { | |
2787 | skb_reserve(skb, NET_SKB_PAD); | |
2788 | skb->dev = dev; | |
2789 | } | |
2790 | } else { | |
2791 | skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); | |
2792 | } | |
2793 | ||
2794 | return skb; | |
2795 | } | |
2796 | ||
222f1806 LC |
2797 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2798 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2799 | { |
2800 | struct sk_buff *skb = NULL; | |
2801 | __u8 *eth; | |
2802 | struct udphdr *udph; | |
2803 | int datalen, iplen; | |
2804 | struct iphdr *iph; | |
d5f1ce9a | 2805 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2806 | __be32 *mpls; |
34954ddc FF |
2807 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2808 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2809 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2810 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2811 | u16 queue_map; |
ca6549af SW |
2812 | |
2813 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2814 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2815 | |
34954ddc | 2816 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2817 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2818 | |
64053bee RO |
2819 | /* Update any of the values, used when we're incrementing various |
2820 | * fields. | |
2821 | */ | |
2822 | mod_cur_headers(pkt_dev); | |
eb589063 | 2823 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2824 | |
7ac5459e | 2825 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 | 2826 | |
7a6e288d | 2827 | skb = pktgen_alloc_skb(odev, pkt_dev, datalen); |
1da177e4 LT |
2828 | if (!skb) { |
2829 | sprintf(pkt_dev->result, "No memory"); | |
2830 | return NULL; | |
2831 | } | |
2832 | ||
7a6e288d | 2833 | prefetchw(skb->data); |
7ac5459e | 2834 | skb_reserve(skb, datalen); |
1da177e4 LT |
2835 | |
2836 | /* Reserve for ethernet and IP header */ | |
2837 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2838 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2839 | if (pkt_dev->nr_labels) | |
2840 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2841 | |
2842 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2843 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2844 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2845 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2846 | pkt_dev->svlan_cfi, | |
2847 | pkt_dev->svlan_p); | |
34954ddc | 2848 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2849 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2850 | } |
2851 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2852 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2853 | pkt_dev->vlan_cfi, | |
2854 | pkt_dev->vlan_p); | |
34954ddc | 2855 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2856 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2857 | } |
2858 | ||
525cebed TG |
2859 | skb_set_mac_header(skb, 0); |
2860 | skb_set_network_header(skb, skb->len); | |
2861 | iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr)); | |
2862 | ||
2863 | skb_set_transport_header(skb, skb->len); | |
2864 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2865 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2866 | skb->priority = pkt_dev->skb_priority; |
2867 | ||
1da177e4 | 2868 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2869 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2870 | |
ca6549af SW |
2871 | /* Eth + IPh + UDPh + mpls */ |
2872 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2873 | pkt_dev->pkt_overhead; |
6af773e7 | 2874 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2875 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2876 | |
1da177e4 LT |
2877 | udph->source = htons(pkt_dev->cur_udp_src); |
2878 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 | 2879 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
c26bf4a5 | 2880 | udph->check = 0; |
1da177e4 LT |
2881 | |
2882 | iph->ihl = 5; | |
2883 | iph->version = 4; | |
2884 | iph->ttl = 32; | |
1ca7768c | 2885 | iph->tos = pkt_dev->tos; |
222f1806 | 2886 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2887 | iph->saddr = pkt_dev->cur_saddr; |
2888 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2889 | iph->id = htons(pkt_dev->ip_id); |
2890 | pkt_dev->ip_id++; | |
1da177e4 LT |
2891 | iph->frag_off = 0; |
2892 | iplen = 20 + 8 + datalen; | |
2893 | iph->tot_len = htons(iplen); | |
03c633e7 | 2894 | ip_send_check(iph); |
ca6549af | 2895 | skb->protocol = protocol; |
1da177e4 LT |
2896 | skb->dev = odev; |
2897 | skb->pkt_type = PACKET_HOST; | |
c26bf4a5 | 2898 | |
7744b5f3 SD |
2899 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2900 | ||
c26bf4a5 TG |
2901 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2902 | skb->ip_summed = CHECKSUM_NONE; | |
2903 | } else if (odev->features & NETIF_F_V4_CSUM) { | |
2904 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2905 | skb->csum = 0; | |
7744b5f3 | 2906 | udp4_hwcsum(skb, iph->saddr, iph->daddr); |
c26bf4a5 | 2907 | } else { |
7744b5f3 | 2908 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0); |
c26bf4a5 TG |
2909 | |
2910 | /* add protocol-dependent pseudo-header */ | |
7744b5f3 | 2911 | udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, |
c26bf4a5 TG |
2912 | datalen + 8, IPPROTO_UDP, csum); |
2913 | ||
2914 | if (udph->check == 0) | |
2915 | udph->check = CSUM_MANGLED_0; | |
2916 | } | |
2917 | ||
a553e4a6 JHS |
2918 | #ifdef CONFIG_XFRM |
2919 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2920 | return NULL; | |
2921 | #endif | |
2922 | ||
1da177e4 LT |
2923 | return skb; |
2924 | } | |
2925 | ||
222f1806 LC |
2926 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2927 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2928 | { |
2929 | struct sk_buff *skb = NULL; | |
2930 | __u8 *eth; | |
2931 | struct udphdr *udph; | |
c26bf4a5 | 2932 | int datalen, udplen; |
1da177e4 | 2933 | struct ipv6hdr *iph; |
d5f1ce9a | 2934 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2935 | __be32 *mpls; |
34954ddc FF |
2936 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2937 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2938 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2939 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2940 | u16 queue_map; |
ca6549af SW |
2941 | |
2942 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2943 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2944 | |
34954ddc | 2945 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2946 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2947 | |
64053bee RO |
2948 | /* Update any of the values, used when we're incrementing various |
2949 | * fields. | |
2950 | */ | |
2951 | mod_cur_headers(pkt_dev); | |
eb589063 | 2952 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2953 | |
7a6e288d | 2954 | skb = pktgen_alloc_skb(odev, pkt_dev, 16); |
1da177e4 LT |
2955 | if (!skb) { |
2956 | sprintf(pkt_dev->result, "No memory"); | |
2957 | return NULL; | |
2958 | } | |
2959 | ||
7a6e288d | 2960 | prefetchw(skb->data); |
1da177e4 LT |
2961 | skb_reserve(skb, 16); |
2962 | ||
2963 | /* Reserve for ethernet and IP header */ | |
2964 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2965 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2966 | if (pkt_dev->nr_labels) | |
2967 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2968 | |
2969 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2970 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2971 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2972 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2973 | pkt_dev->svlan_cfi, | |
2974 | pkt_dev->svlan_p); | |
34954ddc | 2975 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2976 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2977 | } |
2978 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2979 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2980 | pkt_dev->vlan_cfi, | |
2981 | pkt_dev->vlan_p); | |
34954ddc | 2982 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2983 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2984 | } |
2985 | ||
525cebed TG |
2986 | skb_set_mac_header(skb, 0); |
2987 | skb_set_network_header(skb, skb->len); | |
2988 | iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr)); | |
2989 | ||
2990 | skb_set_transport_header(skb, skb->len); | |
2991 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2992 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2993 | skb->priority = pkt_dev->skb_priority; |
1da177e4 | 2994 | |
1da177e4 | 2995 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2996 | *(__be16 *) ð[12] = protocol; |
64053bee | 2997 | |
ca6549af SW |
2998 | /* Eth + IPh + UDPh + mpls */ |
2999 | datalen = pkt_dev->cur_pkt_size - 14 - | |
3000 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 3001 | pkt_dev->pkt_overhead; |
1da177e4 | 3002 | |
5aa8b572 | 3003 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 3004 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 3005 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
3006 | } |
3007 | ||
c26bf4a5 | 3008 | udplen = datalen + sizeof(struct udphdr); |
1da177e4 LT |
3009 | udph->source = htons(pkt_dev->cur_udp_src); |
3010 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
c26bf4a5 TG |
3011 | udph->len = htons(udplen); |
3012 | udph->check = 0; | |
1da177e4 | 3013 | |
d5f1ce9a | 3014 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 3015 | |
1ca7768c FF |
3016 | if (pkt_dev->traffic_class) { |
3017 | /* Version + traffic class + flow (0) */ | |
252e3346 | 3018 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
3019 | } |
3020 | ||
1da177e4 LT |
3021 | iph->hop_limit = 32; |
3022 | ||
c26bf4a5 | 3023 | iph->payload_len = htons(udplen); |
1da177e4 LT |
3024 | iph->nexthdr = IPPROTO_UDP; |
3025 | ||
4e3fd7a0 AD |
3026 | iph->daddr = pkt_dev->cur_in6_daddr; |
3027 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 3028 | |
ca6549af | 3029 | skb->protocol = protocol; |
1da177e4 LT |
3030 | skb->dev = odev; |
3031 | skb->pkt_type = PACKET_HOST; | |
3032 | ||
7744b5f3 SD |
3033 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
3034 | ||
c26bf4a5 TG |
3035 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
3036 | skb->ip_summed = CHECKSUM_NONE; | |
3037 | } else if (odev->features & NETIF_F_V6_CSUM) { | |
3038 | skb->ip_summed = CHECKSUM_PARTIAL; | |
3039 | skb->csum_start = skb_transport_header(skb) - skb->head; | |
3040 | skb->csum_offset = offsetof(struct udphdr, check); | |
3041 | udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); | |
3042 | } else { | |
7744b5f3 | 3043 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0); |
c26bf4a5 TG |
3044 | |
3045 | /* add protocol-dependent pseudo-header */ | |
3046 | udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); | |
3047 | ||
3048 | if (udph->check == 0) | |
3049 | udph->check = CSUM_MANGLED_0; | |
3050 | } | |
3051 | ||
1da177e4 LT |
3052 | return skb; |
3053 | } | |
3054 | ||
475ac1e4 SH |
3055 | static struct sk_buff *fill_packet(struct net_device *odev, |
3056 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3057 | { |
222f1806 | 3058 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3059 | return fill_packet_ipv6(odev, pkt_dev); |
3060 | else | |
3061 | return fill_packet_ipv4(odev, pkt_dev); | |
3062 | } | |
3063 | ||
222f1806 | 3064 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3065 | { |
222f1806 LC |
3066 | pkt_dev->seq_num = 1; |
3067 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3068 | pkt_dev->sofar = 0; |
222f1806 LC |
3069 | pkt_dev->tx_bytes = 0; |
3070 | pkt_dev->errors = 0; | |
1da177e4 LT |
3071 | } |
3072 | ||
3073 | /* Set up structure for sending pkts, clear counters */ | |
3074 | ||
3075 | static void pktgen_run(struct pktgen_thread *t) | |
3076 | { | |
c26a8016 | 3077 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3078 | int started = 0; |
3079 | ||
f9467eae | 3080 | func_enter(); |
1da177e4 | 3081 | |
8788370a JDB |
3082 | rcu_read_lock(); |
3083 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
1da177e4 LT |
3084 | |
3085 | /* | |
3086 | * setup odev and create initial packet. | |
3087 | */ | |
3088 | pktgen_setup_inject(pkt_dev); | |
3089 | ||
222f1806 | 3090 | if (pkt_dev->odev) { |
1da177e4 | 3091 | pktgen_clear_counters(pkt_dev); |
1da177e4 | 3092 | pkt_dev->skb = NULL; |
398f382c | 3093 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 3094 | |
16dab72f | 3095 | set_pkt_overhead(pkt_dev); |
222f1806 | 3096 | |
1da177e4 | 3097 | strcpy(pkt_dev->result, "Starting"); |
8788370a | 3098 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3099 | started++; |
222f1806 | 3100 | } else |
1da177e4 LT |
3101 | strcpy(pkt_dev->result, "Error starting"); |
3102 | } | |
8788370a | 3103 | rcu_read_unlock(); |
222f1806 LC |
3104 | if (started) |
3105 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3106 | } |
3107 | ||
4e58a027 | 3108 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 3109 | { |
cdcdbe0b | 3110 | struct pktgen_thread *t; |
1da177e4 | 3111 | |
f9467eae | 3112 | func_enter(); |
1da177e4 | 3113 | |
6146e6a4 | 3114 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3115 | |
4e58a027 | 3116 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 3117 | t->control |= T_STOP; |
cdcdbe0b | 3118 | |
6146e6a4 | 3119 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3120 | } |
3121 | ||
648fda74 | 3122 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3123 | { |
648fda74 | 3124 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3125 | |
8788370a JDB |
3126 | rcu_read_lock(); |
3127 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
3128 | if (pkt_dev->running) { | |
3129 | rcu_read_unlock(); | |
648fda74 | 3130 | return 1; |
8788370a JDB |
3131 | } |
3132 | rcu_read_unlock(); | |
648fda74 | 3133 | return 0; |
1da177e4 LT |
3134 | } |
3135 | ||
222f1806 | 3136 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3137 | { |
222f1806 | 3138 | while (thread_is_running(t)) { |
1da177e4 | 3139 | |
222f1806 | 3140 | msleep_interruptible(100); |
1da177e4 | 3141 | |
222f1806 LC |
3142 | if (signal_pending(current)) |
3143 | goto signal; | |
222f1806 | 3144 | } |
222f1806 LC |
3145 | return 1; |
3146 | signal: | |
3147 | return 0; | |
1da177e4 LT |
3148 | } |
3149 | ||
4e58a027 | 3150 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 3151 | { |
cdcdbe0b | 3152 | struct pktgen_thread *t; |
1da177e4 | 3153 | int sig = 1; |
222f1806 | 3154 | |
6146e6a4 | 3155 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3156 | |
4e58a027 | 3157 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 3158 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3159 | if (sig == 0) |
3160 | break; | |
1da177e4 | 3161 | } |
cdcdbe0b LC |
3162 | |
3163 | if (sig == 0) | |
4e58a027 | 3164 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3165 | t->control |= (T_STOP); |
cdcdbe0b | 3166 | |
6146e6a4 | 3167 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3168 | return sig; |
3169 | } | |
3170 | ||
4e58a027 | 3171 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 3172 | { |
cdcdbe0b | 3173 | struct pktgen_thread *t; |
1da177e4 | 3174 | |
f9467eae | 3175 | func_enter(); |
1da177e4 | 3176 | |
6146e6a4 | 3177 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3178 | |
4e58a027 | 3179 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3180 | t->control |= (T_RUN); |
cdcdbe0b | 3181 | |
6146e6a4 | 3182 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3183 | |
63adc6fb SH |
3184 | /* Propagate thread->control */ |
3185 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3186 | |
4e58a027 | 3187 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3188 | } |
3189 | ||
4e58a027 | 3190 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3191 | { |
3192 | struct pktgen_thread *t; | |
3193 | ||
f9467eae | 3194 | func_enter(); |
eb37b41c JB |
3195 | |
3196 | mutex_lock(&pktgen_thread_lock); | |
3197 | ||
4e58a027 | 3198 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3199 | t->control |= (T_REMDEVALL); |
3200 | ||
3201 | mutex_unlock(&pktgen_thread_lock); | |
3202 | ||
63adc6fb SH |
3203 | /* Propagate thread->control */ |
3204 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3205 | |
4e58a027 | 3206 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3207 | } |
3208 | ||
1da177e4 LT |
3209 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3210 | { | |
fd29cf72 | 3211 | __u64 bps, mbps, pps; |
222f1806 | 3212 | char *p = pkt_dev->result; |
fd29cf72 SH |
3213 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3214 | pkt_dev->started_at); | |
3215 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3216 | ||
03a14ab1 | 3217 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3218 | (unsigned long long)ktime_to_us(elapsed), |
3219 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3220 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3221 | (unsigned long long)pkt_dev->sofar, |
3222 | pkt_dev->cur_pkt_size, nr_frags); | |
3223 | ||
fd29cf72 SH |
3224 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3225 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3226 | |
3227 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3228 | ||
3229 | mbps = bps; | |
3230 | do_div(mbps, 1000000); | |
3231 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3232 | (unsigned long long)pps, | |
3233 | (unsigned long long)mbps, | |
3234 | (unsigned long long)bps, | |
3235 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3236 | } |
1da177e4 LT |
3237 | |
3238 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3239 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3240 | { |
222f1806 | 3241 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3242 | |
222f1806 | 3243 | if (!pkt_dev->running) { |
294a0b7f JP |
3244 | pr_warn("interface: %s is already stopped\n", |
3245 | pkt_dev->odevname); | |
222f1806 LC |
3246 | return -EINVAL; |
3247 | } | |
1da177e4 | 3248 | |
8788370a | 3249 | pkt_dev->running = 0; |
3bda06a3 SH |
3250 | kfree_skb(pkt_dev->skb); |
3251 | pkt_dev->skb = NULL; | |
398f382c | 3252 | pkt_dev->stopped_at = ktime_get(); |
1da177e4 | 3253 | |
95ed63f7 | 3254 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3255 | |
222f1806 | 3256 | return 0; |
1da177e4 LT |
3257 | } |
3258 | ||
222f1806 | 3259 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3260 | { |
c26a8016 | 3261 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3262 | |
8788370a JDB |
3263 | rcu_read_lock(); |
3264 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
c26a8016 | 3265 | if (!pkt_dev->running) |
222f1806 LC |
3266 | continue; |
3267 | if (best == NULL) | |
c26a8016 | 3268 | best = pkt_dev; |
398f382c | 3269 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3270 | best = pkt_dev; |
1da177e4 | 3271 | } |
8788370a JDB |
3272 | rcu_read_unlock(); |
3273 | ||
222f1806 | 3274 | return best; |
1da177e4 LT |
3275 | } |
3276 | ||
222f1806 LC |
3277 | static void pktgen_stop(struct pktgen_thread *t) |
3278 | { | |
c26a8016 | 3279 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3280 | |
f9467eae | 3281 | func_enter(); |
1da177e4 | 3282 | |
8788370a | 3283 | rcu_read_lock(); |
1da177e4 | 3284 | |
8788370a | 3285 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { |
c26a8016 | 3286 | pktgen_stop_device(pkt_dev); |
95ed63f7 | 3287 | } |
1da177e4 | 3288 | |
8788370a | 3289 | rcu_read_unlock(); |
1da177e4 LT |
3290 | } |
3291 | ||
95ed63f7 AK |
3292 | /* |
3293 | * one of our devices needs to be removed - find it | |
3294 | * and remove it | |
3295 | */ | |
3296 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3297 | { | |
c26a8016 LC |
3298 | struct list_head *q, *n; |
3299 | struct pktgen_dev *cur; | |
95ed63f7 | 3300 | |
f9467eae | 3301 | func_enter(); |
95ed63f7 | 3302 | |
c26a8016 LC |
3303 | list_for_each_safe(q, n, &t->if_list) { |
3304 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3305 | |
222f1806 LC |
3306 | if (!cur->removal_mark) |
3307 | continue; | |
95ed63f7 | 3308 | |
86dc1ad2 | 3309 | kfree_skb(cur->skb); |
95ed63f7 AK |
3310 | cur->skb = NULL; |
3311 | ||
3312 | pktgen_remove_device(t, cur); | |
3313 | ||
3314 | break; | |
3315 | } | |
95ed63f7 AK |
3316 | } |
3317 | ||
222f1806 | 3318 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3319 | { |
c26a8016 LC |
3320 | struct list_head *q, *n; |
3321 | struct pktgen_dev *cur; | |
222f1806 | 3322 | |
f9467eae JP |
3323 | func_enter(); |
3324 | ||
222f1806 | 3325 | /* Remove all devices, free mem */ |
95ed63f7 | 3326 | |
c26a8016 LC |
3327 | list_for_each_safe(q, n, &t->if_list) { |
3328 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3329 | |
86dc1ad2 | 3330 | kfree_skb(cur->skb); |
95ed63f7 AK |
3331 | cur->skb = NULL; |
3332 | ||
1da177e4 LT |
3333 | pktgen_remove_device(t, cur); |
3334 | } | |
1da177e4 LT |
3335 | } |
3336 | ||
222f1806 | 3337 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3338 | { |
222f1806 | 3339 | /* Remove from the thread list */ |
4e58a027 | 3340 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3341 | } |
3342 | ||
ef87979c | 3343 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3344 | { |
398f382c | 3345 | ktime_t idle_start = ktime_get(); |
ef87979c | 3346 | schedule(); |
398f382c | 3347 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3348 | } |
3791decb | 3349 | |
ef87979c SH |
3350 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3351 | { | |
398f382c | 3352 | ktime_t idle_start = ktime_get(); |
3791decb | 3353 | |
ef87979c SH |
3354 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3355 | if (signal_pending(current)) | |
3356 | break; | |
3357 | ||
3358 | if (need_resched()) | |
3359 | pktgen_resched(pkt_dev); | |
3360 | else | |
3361 | cpu_relax(); | |
3362 | } | |
398f382c | 3363 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3364 | } |
3365 | ||
475ac1e4 | 3366 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3367 | { |
38b2cf29 | 3368 | unsigned int burst = ACCESS_ONCE(pkt_dev->burst); |
00829823 | 3369 | struct net_device *odev = pkt_dev->odev; |
fd2ea0a7 | 3370 | struct netdev_queue *txq; |
62f64aed | 3371 | struct sk_buff *skb; |
1da177e4 LT |
3372 | int ret; |
3373 | ||
ef87979c SH |
3374 | /* If device is offline, then don't send */ |
3375 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3376 | pktgen_stop_device(pkt_dev); | |
3377 | return; | |
fd2ea0a7 DM |
3378 | } |
3379 | ||
ef87979c SH |
3380 | /* This is max DELAY, this has special meaning of |
3381 | * "never transmit" | |
3382 | */ | |
3383 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3384 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3385 | return; |
1da177e4 | 3386 | } |
222f1806 | 3387 | |
ef87979c | 3388 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3389 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3390 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3391 | /* build a new pkt */ | |
3392 | kfree_skb(pkt_dev->skb); | |
3393 | ||
3394 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3395 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3396 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3397 | schedule(); |
3398 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3399 | return; | |
1da177e4 | 3400 | } |
baac8564 | 3401 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3402 | pkt_dev->allocated_skbs++; |
3403 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3404 | } |
95ed63f7 | 3405 | |
ef87979c SH |
3406 | if (pkt_dev->delay && pkt_dev->last_ok) |
3407 | spin(pkt_dev, pkt_dev->next_tx); | |
3408 | ||
62f64aed AS |
3409 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) { |
3410 | skb = pkt_dev->skb; | |
3411 | skb->protocol = eth_type_trans(skb, skb->dev); | |
3412 | atomic_add(burst, &skb->users); | |
3413 | local_bh_disable(); | |
3414 | do { | |
3415 | ret = netif_receive_skb(skb); | |
3416 | if (ret == NET_RX_DROP) | |
3417 | pkt_dev->errors++; | |
3418 | pkt_dev->sofar++; | |
3419 | pkt_dev->seq_num++; | |
3420 | if (atomic_read(&skb->users) != burst) { | |
3421 | /* skb was queued by rps/rfs or taps, | |
3422 | * so cannot reuse this skb | |
3423 | */ | |
3424 | atomic_sub(burst - 1, &skb->users); | |
3425 | /* get out of the loop and wait | |
3426 | * until skb is consumed | |
3427 | */ | |
62f64aed AS |
3428 | break; |
3429 | } | |
3430 | /* skb was 'freed' by stack, so clean few | |
3431 | * bits and reuse it | |
3432 | */ | |
3433 | #ifdef CONFIG_NET_CLS_ACT | |
3434 | skb->tc_verd = 0; /* reset reclass/redir ttl */ | |
3435 | #endif | |
3436 | } while (--burst > 0); | |
3437 | goto out; /* Skips xmit_mode M_START_XMIT */ | |
3438 | } | |
3439 | ||
10c51b56 | 3440 | txq = skb_get_tx_queue(odev, pkt_dev->skb); |
fd2ea0a7 | 3441 | |
0f2eea4b DB |
3442 | local_bh_disable(); |
3443 | ||
3444 | HARD_TX_LOCK(odev, txq, smp_processor_id()); | |
5b8db2f5 | 3445 | |
6f25cd47 | 3446 | if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { |
ef87979c | 3447 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3448 | pkt_dev->last_ok = 0; |
3449 | goto unlock; | |
3450 | } | |
38b2cf29 AS |
3451 | atomic_add(burst, &pkt_dev->skb->users); |
3452 | ||
3453 | xmit_more: | |
3454 | ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0); | |
ef87979c SH |
3455 | |
3456 | switch (ret) { | |
3457 | case NETDEV_TX_OK: | |
ef87979c SH |
3458 | pkt_dev->last_ok = 1; |
3459 | pkt_dev->sofar++; | |
3460 | pkt_dev->seq_num++; | |
baac8564 | 3461 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
38b2cf29 AS |
3462 | if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq)) |
3463 | goto xmit_more; | |
ef87979c | 3464 | break; |
f466dba1 JF |
3465 | case NET_XMIT_DROP: |
3466 | case NET_XMIT_CN: | |
3467 | case NET_XMIT_POLICED: | |
3468 | /* skb has been consumed */ | |
3469 | pkt_dev->errors++; | |
3470 | break; | |
ef87979c | 3471 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3472 | net_info_ratelimited("%s xmit error: %d\n", |
3473 | pkt_dev->odevname, ret); | |
ef87979c SH |
3474 | pkt_dev->errors++; |
3475 | /* fallthru */ | |
3476 | case NETDEV_TX_LOCKED: | |
3477 | case NETDEV_TX_BUSY: | |
3478 | /* Retry it next time */ | |
3479 | atomic_dec(&(pkt_dev->skb->users)); | |
3480 | pkt_dev->last_ok = 0; | |
222f1806 | 3481 | } |
38b2cf29 AS |
3482 | if (unlikely(burst)) |
3483 | atomic_sub(burst, &pkt_dev->skb->users); | |
0835acfe | 3484 | unlock: |
0f2eea4b DB |
3485 | HARD_TX_UNLOCK(odev, txq); |
3486 | ||
62f64aed | 3487 | out: |
0f2eea4b | 3488 | local_bh_enable(); |
222f1806 | 3489 | |
1da177e4 LT |
3490 | /* If pkt_dev->count is zero, then run forever */ |
3491 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3492 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3493 | |
1da177e4 LT |
3494 | /* Done with this */ |
3495 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3496 | } |
222f1806 | 3497 | } |
1da177e4 | 3498 | |
4ec93edb | 3499 | /* |
1da177e4 LT |
3500 | * Main loop of the thread goes here |
3501 | */ | |
3502 | ||
ee74baa7 | 3503 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3504 | { |
3505 | DEFINE_WAIT(wait); | |
ee74baa7 | 3506 | struct pktgen_thread *t = arg; |
222f1806 | 3507 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3508 | int cpu = t->cpu; |
1da177e4 | 3509 | |
ee74baa7 | 3510 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3511 | |
3512 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3513 | complete(&t->start_done); |
1da177e4 | 3514 | |
f9467eae | 3515 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3516 | |
83144186 RW |
3517 | set_freezable(); |
3518 | ||
baac167b JDB |
3519 | __set_current_state(TASK_RUNNING); |
3520 | ||
ee74baa7 DM |
3521 | while (!kthread_should_stop()) { |
3522 | pkt_dev = next_to_run(t); | |
1da177e4 | 3523 | |
ef87979c | 3524 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3525 | if (t->net->pktgen_exiting) |
551eaff1 | 3526 | break; |
ef87979c SH |
3527 | wait_event_interruptible_timeout(t->queue, |
3528 | t->control != 0, | |
3529 | HZ/10); | |
1b3f720b | 3530 | try_to_freeze(); |
ef87979c | 3531 | continue; |
ee74baa7 | 3532 | } |
1da177e4 | 3533 | |
ef87979c | 3534 | if (likely(pkt_dev)) { |
1da177e4 LT |
3535 | pktgen_xmit(pkt_dev); |
3536 | ||
ef87979c SH |
3537 | if (need_resched()) |
3538 | pktgen_resched(pkt_dev); | |
3539 | else | |
3540 | cpu_relax(); | |
3541 | } | |
3542 | ||
222f1806 | 3543 | if (t->control & T_STOP) { |
1da177e4 LT |
3544 | pktgen_stop(t); |
3545 | t->control &= ~(T_STOP); | |
3546 | } | |
3547 | ||
222f1806 | 3548 | if (t->control & T_RUN) { |
1da177e4 LT |
3549 | pktgen_run(t); |
3550 | t->control &= ~(T_RUN); | |
3551 | } | |
3552 | ||
222f1806 | 3553 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3554 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3555 | t->control &= ~(T_REMDEVALL); |
3556 | } | |
3557 | ||
222f1806 | 3558 | if (t->control & T_REMDEV) { |
95ed63f7 | 3559 | pktgen_rem_one_if(t); |
1da177e4 LT |
3560 | t->control &= ~(T_REMDEV); |
3561 | } | |
3562 | ||
09fe3ef4 | 3563 | try_to_freeze(); |
222f1806 | 3564 | } |
baac167b | 3565 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 3566 | |
f9467eae | 3567 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3568 | pktgen_stop(t); |
1da177e4 | 3569 | |
f9467eae | 3570 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3571 | pktgen_rem_all_ifs(t); |
1da177e4 | 3572 | |
f9467eae | 3573 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3574 | pktgen_rem_thread(t); |
cdcdbe0b | 3575 | |
551eaff1 ED |
3576 | /* Wait for kthread_stop */ |
3577 | while (!kthread_should_stop()) { | |
3578 | set_current_state(TASK_INTERRUPTIBLE); | |
3579 | schedule(); | |
3580 | } | |
3581 | __set_current_state(TASK_RUNNING); | |
3582 | ||
ee74baa7 | 3583 | return 0; |
1da177e4 LT |
3584 | } |
3585 | ||
222f1806 | 3586 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3587 | const char *ifname, bool exact) |
1da177e4 | 3588 | { |
c26a8016 | 3589 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3590 | size_t len = strlen(ifname); |
222f1806 | 3591 | |
8788370a JDB |
3592 | rcu_read_lock(); |
3593 | list_for_each_entry_rcu(p, &t->if_list, list) | |
3e984840 ED |
3594 | if (strncmp(p->odevname, ifname, len) == 0) { |
3595 | if (p->odevname[len]) { | |
3596 | if (exact || p->odevname[len] != '@') | |
3597 | continue; | |
3598 | } | |
c26a8016 | 3599 | pkt_dev = p; |
222f1806 LC |
3600 | break; |
3601 | } | |
222f1806 | 3602 | |
8788370a | 3603 | rcu_read_unlock(); |
f9467eae | 3604 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3605 | return pkt_dev; |
1da177e4 LT |
3606 | } |
3607 | ||
4ec93edb YH |
3608 | /* |
3609 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3610 | */ |
3611 | ||
222f1806 LC |
3612 | static int add_dev_to_thread(struct pktgen_thread *t, |
3613 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3614 | { |
3615 | int rv = 0; | |
222f1806 | 3616 | |
8788370a JDB |
3617 | /* This function cannot be called concurrently, as its called |
3618 | * under pktgen_thread_lock mutex, but it can run from | |
3619 | * userspace on another CPU than the kthread. The if_lock() | |
3620 | * is used here to sync with concurrent instances of | |
3621 | * _rem_dev_from_if_list() invoked via kthread, which is also | |
3622 | * updating the if_list */ | |
222f1806 LC |
3623 | if_lock(t); |
3624 | ||
3625 | if (pkt_dev->pg_thread) { | |
f9467eae | 3626 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3627 | rv = -EBUSY; |
3628 | goto out; | |
3629 | } | |
c26a8016 | 3630 | |
1da177e4 | 3631 | pkt_dev->running = 0; |
8788370a JDB |
3632 | pkt_dev->pg_thread = t; |
3633 | list_add_rcu(&pkt_dev->list, &t->if_list); | |
1da177e4 | 3634 | |
222f1806 LC |
3635 | out: |
3636 | if_unlock(t); | |
3637 | return rv; | |
1da177e4 LT |
3638 | } |
3639 | ||
3640 | /* Called under thread lock */ | |
3641 | ||
222f1806 | 3642 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3643 | { |
222f1806 | 3644 | struct pktgen_dev *pkt_dev; |
39df232f | 3645 | int err; |
3291b9db | 3646 | int node = cpu_to_node(t->cpu); |
222f1806 | 3647 | |
1da177e4 LT |
3648 | /* We don't allow a device to be on several threads */ |
3649 | ||
4e58a027 | 3650 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3651 | if (pkt_dev) { |
f9467eae | 3652 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3653 | return -EBUSY; |
3654 | } | |
d50a6b56 | 3655 | |
3291b9db | 3656 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3657 | if (!pkt_dev) |
3658 | return -ENOMEM; | |
3659 | ||
593f63b0 | 3660 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3661 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3662 | node); |
d50a6b56 SH |
3663 | if (pkt_dev->flows == NULL) { |
3664 | kfree(pkt_dev); | |
3665 | return -ENOMEM; | |
3666 | } | |
d50a6b56 | 3667 | |
95ed63f7 | 3668 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3669 | pkt_dev->nfrags = 0; |
fd29cf72 | 3670 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3671 | pkt_dev->count = pg_count_d; |
3672 | pkt_dev->sofar = 0; | |
222f1806 | 3673 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3674 | pkt_dev->udp_src_max = 9; |
3675 | pkt_dev->udp_dst_min = 9; | |
3676 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3677 | pkt_dev->vlan_p = 0; |
3678 | pkt_dev->vlan_cfi = 0; | |
3679 | pkt_dev->vlan_id = 0xffff; | |
3680 | pkt_dev->svlan_p = 0; | |
3681 | pkt_dev->svlan_cfi = 0; | |
3682 | pkt_dev->svlan_id = 0xffff; | |
38b2cf29 | 3683 | pkt_dev->burst = 1; |
e99b99b4 | 3684 | pkt_dev->node = -1; |
34954ddc | 3685 | |
4e58a027 | 3686 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3687 | if (err) |
3688 | goto out1; | |
d8873315 NH |
3689 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3690 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3691 | |
4e58a027 | 3692 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3693 | &pktgen_if_fops, pkt_dev); |
39df232f | 3694 | if (!pkt_dev->entry) { |
f9467eae | 3695 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3696 | PG_PROC_DIR, ifname); |
39df232f SH |
3697 | err = -EINVAL; |
3698 | goto out2; | |
d50a6b56 | 3699 | } |
a553e4a6 JHS |
3700 | #ifdef CONFIG_XFRM |
3701 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3702 | pkt_dev->ipsproto = IPPROTO_ESP; | |
cf93d47e FD |
3703 | |
3704 | /* xfrm tunnel mode needs additional dst to extract outter | |
3705 | * ip header protocol/ttl/id field, here creat a phony one. | |
3706 | * instead of looking for a valid rt, which definitely hurting | |
3707 | * performance under such circumstance. | |
3708 | */ | |
3709 | pkt_dev->dstops.family = AF_INET; | |
3710 | pkt_dev->dst.dev = pkt_dev->odev; | |
3711 | dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false); | |
3712 | pkt_dev->dst.child = &pkt_dev->dst; | |
3713 | pkt_dev->dst.ops = &pkt_dev->dstops; | |
a553e4a6 | 3714 | #endif |
d50a6b56 SH |
3715 | |
3716 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3717 | out2: |
3718 | dev_put(pkt_dev->odev); | |
3719 | out1: | |
a553e4a6 JHS |
3720 | #ifdef CONFIG_XFRM |
3721 | free_SAs(pkt_dev); | |
3722 | #endif | |
1d0ebfe7 | 3723 | vfree(pkt_dev->flows); |
39df232f SH |
3724 | kfree(pkt_dev); |
3725 | return err; | |
1da177e4 LT |
3726 | } |
3727 | ||
4e58a027 | 3728 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3729 | { |
cdcdbe0b | 3730 | struct pktgen_thread *t; |
d50a6b56 | 3731 | struct proc_dir_entry *pe; |
ee74baa7 | 3732 | struct task_struct *p; |
222f1806 | 3733 | |
3291b9db ED |
3734 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3735 | cpu_to_node(cpu)); | |
222f1806 | 3736 | if (!t) { |
f9467eae | 3737 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3738 | return -ENOMEM; |
3739 | } | |
3740 | ||
222f1806 | 3741 | spin_lock_init(&t->if_lock); |
1da177e4 | 3742 | t->cpu = cpu; |
222f1806 | 3743 | |
ee74baa7 DM |
3744 | INIT_LIST_HEAD(&t->if_list); |
3745 | ||
4e58a027 | 3746 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3747 | init_completion(&t->start_done); |
ee74baa7 | 3748 | |
94dcf29a ED |
3749 | p = kthread_create_on_node(pktgen_thread_worker, |
3750 | t, | |
3751 | cpu_to_node(cpu), | |
3752 | "kpktgend_%d", cpu); | |
ee74baa7 | 3753 | if (IS_ERR(p)) { |
f9467eae | 3754 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3755 | list_del(&t->th_list); |
3756 | kfree(t); | |
3757 | return PTR_ERR(p); | |
3758 | } | |
3759 | kthread_bind(p, cpu); | |
3760 | t->tsk = p; | |
3761 | ||
4e58a027 | 3762 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3763 | &pktgen_thread_fops, t); |
222f1806 | 3764 | if (!pe) { |
f9467eae | 3765 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3766 | PG_PROC_DIR, t->tsk->comm); |
3767 | kthread_stop(p); | |
3768 | list_del(&t->th_list); | |
222f1806 LC |
3769 | kfree(t); |
3770 | return -EINVAL; | |
3771 | } | |
d50a6b56 | 3772 | |
4e58a027 | 3773 | t->net = pn; |
ee74baa7 | 3774 | wake_up_process(p); |
d3ede327 | 3775 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3776 | |
3777 | return 0; | |
3778 | } | |
3779 | ||
4ec93edb YH |
3780 | /* |
3781 | * Removes a device from the thread if_list. | |
1da177e4 | 3782 | */ |
222f1806 LC |
3783 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3784 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3785 | { |
c26a8016 LC |
3786 | struct list_head *q, *n; |
3787 | struct pktgen_dev *p; | |
1da177e4 | 3788 | |
8788370a | 3789 | if_lock(t); |
c26a8016 LC |
3790 | list_for_each_safe(q, n, &t->if_list) { |
3791 | p = list_entry(q, struct pktgen_dev, list); | |
3792 | if (p == pkt_dev) | |
8788370a | 3793 | list_del_rcu(&p->list); |
1da177e4 | 3794 | } |
8788370a | 3795 | if_unlock(t); |
1da177e4 LT |
3796 | } |
3797 | ||
222f1806 LC |
3798 | static int pktgen_remove_device(struct pktgen_thread *t, |
3799 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3800 | { |
f9467eae | 3801 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3802 | |
222f1806 | 3803 | if (pkt_dev->running) { |
294a0b7f | 3804 | pr_warn("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3805 | pktgen_stop_device(pkt_dev); |
3806 | } | |
3807 | ||
3808 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3809 | |
3810 | if (pkt_dev->odev) { | |
3811 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3812 | pkt_dev->odev = NULL; |
3813 | } | |
3814 | ||
8788370a JDB |
3815 | /* Remove proc before if_list entry, because add_device uses |
3816 | * list to determine if interface already exist, avoid race | |
3817 | * with proc_create_data() */ | |
ef87c5d6 | 3818 | proc_remove(pkt_dev->entry); |
1da177e4 | 3819 | |
8788370a JDB |
3820 | /* And update the thread if_list */ |
3821 | _rem_dev_from_if_list(t, pkt_dev); | |
3822 | ||
a553e4a6 JHS |
3823 | #ifdef CONFIG_XFRM |
3824 | free_SAs(pkt_dev); | |
3825 | #endif | |
1d0ebfe7 | 3826 | vfree(pkt_dev->flows); |
26ad7879 ED |
3827 | if (pkt_dev->page) |
3828 | put_page(pkt_dev->page); | |
8788370a | 3829 | kfree_rcu(pkt_dev, rcu); |
222f1806 | 3830 | return 0; |
1da177e4 LT |
3831 | } |
3832 | ||
4e58a027 | 3833 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3834 | { |
4e58a027 | 3835 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3836 | struct proc_dir_entry *pe; |
4e58a027 CW |
3837 | int cpu, ret = 0; |
3838 | ||
3839 | pn->net = net; | |
3840 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3841 | pn->pktgen_exiting = false; | |
3842 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3843 | if (!pn->proc_dir) { | |
3844 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3845 | return -ENODEV; |
4e58a027 CW |
3846 | } |
3847 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3848 | if (pe == NULL) { |
4e58a027 | 3849 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3850 | ret = -EINVAL; |
4e58a027 | 3851 | goto remove; |
222f1806 | 3852 | } |
1da177e4 | 3853 | |
670c02c2 | 3854 | for_each_online_cpu(cpu) { |
8024bb24 | 3855 | int err; |
1da177e4 | 3856 | |
4e58a027 | 3857 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3858 | if (err) |
4e58a027 | 3859 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3860 | cpu, err); |
222f1806 | 3861 | } |
8024bb24 | 3862 | |
4e58a027 CW |
3863 | if (list_empty(&pn->pktgen_threads)) { |
3864 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3865 | ret = -ENODEV; |
4e58a027 | 3866 | goto remove_entry; |
8024bb24 LC |
3867 | } |
3868 | ||
222f1806 | 3869 | return 0; |
ce14f894 | 3870 | |
4e58a027 CW |
3871 | remove_entry: |
3872 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3873 | remove: | |
ece31ffd | 3874 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3875 | return ret; |
1da177e4 LT |
3876 | } |
3877 | ||
4e58a027 | 3878 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3879 | { |
4e58a027 | 3880 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3881 | struct pktgen_thread *t; |
3882 | struct list_head *q, *n; | |
d4b11335 | 3883 | LIST_HEAD(list); |
1da177e4 | 3884 | |
222f1806 | 3885 | /* Stop all interfaces & threads */ |
4e58a027 | 3886 | pn->pktgen_exiting = true; |
1da177e4 | 3887 | |
c57b5468 | 3888 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3889 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3890 | mutex_unlock(&pktgen_thread_lock); |
3891 | ||
3892 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3893 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3894 | list_del(&t->th_list); |
ee74baa7 DM |
3895 | kthread_stop(t->tsk); |
3896 | kfree(t); | |
222f1806 | 3897 | } |
1da177e4 | 3898 | |
4e58a027 | 3899 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3900 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3901 | } |
3902 | ||
3903 | static struct pernet_operations pg_net_ops = { | |
3904 | .init = pg_net_init, | |
3905 | .exit = pg_net_exit, | |
3906 | .id = &pg_net_id, | |
3907 | .size = sizeof(struct pktgen_net), | |
3908 | }; | |
3909 | ||
3910 | static int __init pg_init(void) | |
3911 | { | |
3912 | int ret = 0; | |
1da177e4 | 3913 | |
4e58a027 CW |
3914 | pr_info("%s", version); |
3915 | ret = register_pernet_subsys(&pg_net_ops); | |
3916 | if (ret) | |
3917 | return ret; | |
3918 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3919 | if (ret) | |
3920 | unregister_pernet_subsys(&pg_net_ops); | |
3921 | ||
3922 | return ret; | |
3923 | } | |
3924 | ||
3925 | static void __exit pg_cleanup(void) | |
3926 | { | |
3927 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3928 | unregister_pernet_subsys(&pg_net_ops); | |
8788370a | 3929 | /* Don't need rcu_barrier() due to use of kfree_rcu() */ |
1da177e4 LT |
3930 | } |
3931 | ||
1da177e4 LT |
3932 | module_init(pg_init); |
3933 | module_exit(pg_cleanup); | |
3934 | ||
c3d2f52d | 3935 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3936 | MODULE_DESCRIPTION("Packet Generator tool"); |
3937 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3938 | MODULE_VERSION(VERSION); |
1da177e4 | 3939 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3940 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3941 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3942 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3943 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3944 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3945 | module_param(debug, int, 0); |
c3d2f52d | 3946 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |