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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Authors: | |
4 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
5 | * Uppsala University and | |
6 | * Swedish University of Agricultural Sciences | |
7 | * | |
8 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
9 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 10 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 | 11 | * |
1da177e4 | 12 | * A tool for loading the network with preconfigurated packets. |
4ec93edb | 13 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
14 | * device, delay (to hard_xmit), number of packets, and whether |
15 | * to use multiple SKBs or just the same one. | |
16 | * pktgen uses the installed interface's output routine. | |
17 | * | |
18 | * Additional hacking by: | |
19 | * | |
20 | * Jens.Laas@data.slu.se | |
21 | * Improved by ANK. 010120. | |
22 | * Improved by ANK even more. 010212. | |
23 | * MAC address typo fixed. 010417 --ro | |
24 | * Integrated. 020301 --DaveM | |
25 | * Added multiskb option 020301 --DaveM | |
26 | * Scaling of results. 020417--sigurdur@linpro.no | |
27 | * Significant re-work of the module: | |
28 | * * Convert to threaded model to more efficiently be able to transmit | |
29 | * and receive on multiple interfaces at once. | |
30 | * * Converted many counters to __u64 to allow longer runs. | |
31 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
32 | * and UDP-ports, for both source and destination, and can | |
33 | * set to use a random distribution or sequentially walk the range. | |
34 | * * Can now change most values after starting. | |
35 | * * Place 12-byte packet in UDP payload with magic number, | |
36 | * sequence number, and timestamp. | |
37 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
38 | * latencies (with micro-second) precision. | |
39 | * * Add IOCTL interface to easily get counters & configuration. | |
40 | * --Ben Greear <greearb@candelatech.com> | |
41 | * | |
4ec93edb YH |
42 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
43 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 44 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
45 | * clone_skb=0 means all packets are allocated this also means ranges time |
46 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
47 | * clones. |
48 | * | |
4ec93edb | 49 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
50 | * --ro |
51 | * | |
52 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
53 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
54 | * --Ben Greear <greearb@candelatech.com> | |
55 | * | |
56 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
57 | * | |
1da177e4 LT |
58 | * 021124 Finished major redesign and rewrite for new functionality. |
59 | * See Documentation/networking/pktgen.txt for how to use this. | |
60 | * | |
61 | * The new operation: | |
4ec93edb YH |
62 | * For each CPU one thread/process is created at start. This process checks |
63 | * for running devices in the if_list and sends packets until count is 0 it | |
64 | * also the thread checks the thread->control which is used for inter-process | |
65 | * communication. controlling process "posts" operations to the threads this | |
8788370a JDB |
66 | * way. |
67 | * The if_list is RCU protected, and the if_lock remains to protect updating | |
68 | * of if_list, from "add_device" as it invoked from userspace (via proc write). | |
1da177e4 | 69 | * |
4ec93edb YH |
70 | * By design there should only be *one* "controlling" process. In practice |
71 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 72 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 73 | * For practical use this should be no problem. |
1da177e4 | 74 | * |
4ec93edb YH |
75 | * Note when adding devices to a specific CPU there good idea to also assign |
76 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
77 | * --ro |
78 | * | |
4ec93edb | 79 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
80 | * memleak 030710- KJP |
81 | * | |
82 | * First "ranges" functionality for ipv6 030726 --ro | |
83 | * | |
84 | * Included flow support. 030802 ANK. | |
85 | * | |
86 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 87 | * |
1da177e4 LT |
88 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
89 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
90 | * | |
4ec93edb | 91 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
92 | * <shemminger@osdl.org> 040923 |
93 | * | |
ca9f1fd2 | 94 | * Randy Dunlap fixed u64 printk compiler warning |
1da177e4 LT |
95 | * |
96 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
97 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
98 | * | |
4ec93edb | 99 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
100 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
101 | * | |
4ec93edb | 102 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 103 | * 050103 |
ca6549af SW |
104 | * |
105 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
106 | * | |
34954ddc FF |
107 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
108 | * | |
ce5d0b47 AR |
109 | * Fixed src_mac command to set source mac of packet to value specified in |
110 | * command by Adit Ranadive <adit.262@gmail.com> | |
1da177e4 | 111 | */ |
f9467eae JP |
112 | |
113 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
114 | ||
1da177e4 LT |
115 | #include <linux/sys.h> |
116 | #include <linux/types.h> | |
117 | #include <linux/module.h> | |
118 | #include <linux/moduleparam.h> | |
119 | #include <linux/kernel.h> | |
222fa076 | 120 | #include <linux/mutex.h> |
1da177e4 LT |
121 | #include <linux/sched.h> |
122 | #include <linux/slab.h> | |
123 | #include <linux/vmalloc.h> | |
1da177e4 LT |
124 | #include <linux/unistd.h> |
125 | #include <linux/string.h> | |
126 | #include <linux/ptrace.h> | |
127 | #include <linux/errno.h> | |
128 | #include <linux/ioport.h> | |
129 | #include <linux/interrupt.h> | |
4fc268d2 | 130 | #include <linux/capability.h> |
2bc481cf | 131 | #include <linux/hrtimer.h> |
09fe3ef4 | 132 | #include <linux/freezer.h> |
1da177e4 LT |
133 | #include <linux/delay.h> |
134 | #include <linux/timer.h> | |
cdcdbe0b | 135 | #include <linux/list.h> |
1da177e4 LT |
136 | #include <linux/init.h> |
137 | #include <linux/skbuff.h> | |
138 | #include <linux/netdevice.h> | |
139 | #include <linux/inet.h> | |
140 | #include <linux/inetdevice.h> | |
141 | #include <linux/rtnetlink.h> | |
142 | #include <linux/if_arp.h> | |
34954ddc | 143 | #include <linux/if_vlan.h> |
1da177e4 LT |
144 | #include <linux/in.h> |
145 | #include <linux/ip.h> | |
146 | #include <linux/ipv6.h> | |
147 | #include <linux/udp.h> | |
148 | #include <linux/proc_fs.h> | |
d50a6b56 | 149 | #include <linux/seq_file.h> |
1da177e4 | 150 | #include <linux/wait.h> |
f404e9a6 | 151 | #include <linux/etherdevice.h> |
ee74baa7 | 152 | #include <linux/kthread.h> |
268bb0ce | 153 | #include <linux/prefetch.h> |
98fa15f3 | 154 | #include <linux/mmzone.h> |
457c4cbc | 155 | #include <net/net_namespace.h> |
1da177e4 LT |
156 | #include <net/checksum.h> |
157 | #include <net/ipv6.h> | |
c26bf4a5 | 158 | #include <net/udp.h> |
73d94e94 | 159 | #include <net/ip6_checksum.h> |
1da177e4 | 160 | #include <net/addrconf.h> |
a553e4a6 JHS |
161 | #ifdef CONFIG_XFRM |
162 | #include <net/xfrm.h> | |
163 | #endif | |
4e58a027 | 164 | #include <net/netns/generic.h> |
1da177e4 LT |
165 | #include <asm/byteorder.h> |
166 | #include <linux/rcupdate.h> | |
1977f032 | 167 | #include <linux/bitops.h> |
63adc6fb SH |
168 | #include <linux/io.h> |
169 | #include <linux/timex.h> | |
170 | #include <linux/uaccess.h> | |
1da177e4 | 171 | #include <asm/dma.h> |
222f1806 | 172 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 173 | |
40207264 | 174 | #define VERSION "2.75" |
1da177e4 | 175 | #define IP_NAME_SZ 32 |
ca6549af | 176 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 177 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 178 | |
f9467eae JP |
179 | #define func_enter() pr_debug("entering %s\n", __func__); |
180 | ||
6f107c74 DS |
181 | #define PKT_FLAGS \ |
182 | pf(IPV6) /* Interface in IPV6 Mode */ \ | |
183 | pf(IPSRC_RND) /* IP-Src Random */ \ | |
184 | pf(IPDST_RND) /* IP-Dst Random */ \ | |
185 | pf(TXSIZE_RND) /* Transmit size is random */ \ | |
186 | pf(UDPSRC_RND) /* UDP-Src Random */ \ | |
187 | pf(UDPDST_RND) /* UDP-Dst Random */ \ | |
188 | pf(UDPCSUM) /* Include UDP checksum */ \ | |
189 | pf(NO_TIMESTAMP) /* Don't timestamp packets (default TS) */ \ | |
190 | pf(MPLS_RND) /* Random MPLS labels */ \ | |
191 | pf(QUEUE_MAP_RND) /* queue map Random */ \ | |
192 | pf(QUEUE_MAP_CPU) /* queue map mirrors smp_processor_id() */ \ | |
193 | pf(FLOW_SEQ) /* Sequential flows */ \ | |
194 | pf(IPSEC) /* ipsec on for flows */ \ | |
195 | pf(MACSRC_RND) /* MAC-Src Random */ \ | |
196 | pf(MACDST_RND) /* MAC-Dst Random */ \ | |
197 | pf(VID_RND) /* Random VLAN ID */ \ | |
198 | pf(SVID_RND) /* Random SVLAN ID */ \ | |
199 | pf(NODE) /* Node memory alloc*/ \ | |
200 | ||
201 | #define pf(flag) flag##_SHIFT, | |
202 | enum pkt_flags { | |
203 | PKT_FLAGS | |
204 | }; | |
205 | #undef pf | |
206 | ||
1da177e4 | 207 | /* Device flag bits */ |
6f107c74 DS |
208 | #define pf(flag) static const __u32 F_##flag = (1<<flag##_SHIFT); |
209 | PKT_FLAGS | |
210 | #undef pf | |
1da177e4 | 211 | |
99c6d3d2 DS |
212 | #define pf(flag) __stringify(flag), |
213 | static char *pkt_flag_names[] = { | |
214 | PKT_FLAGS | |
215 | }; | |
216 | #undef pf | |
217 | ||
218 | #define NR_PKT_FLAGS ARRAY_SIZE(pkt_flag_names) | |
219 | ||
1da177e4 | 220 | /* Thread control flag bits */ |
6b80d6a6 SH |
221 | #define T_STOP (1<<0) /* Stop run */ |
222 | #define T_RUN (1<<1) /* Start run */ | |
223 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
224 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 225 | |
62f64aed AS |
226 | /* Xmit modes */ |
227 | #define M_START_XMIT 0 /* Default normal TX */ | |
228 | #define M_NETIF_RECEIVE 1 /* Inject packets into stack */ | |
0967f244 | 229 | #define M_QUEUE_XMIT 2 /* Inject packet into qdisc */ |
62f64aed | 230 | |
8788370a | 231 | /* If lock -- protects updating of if_list */ |
9a0b1e8b ED |
232 | #define if_lock(t) mutex_lock(&(t->if_lock)); |
233 | #define if_unlock(t) mutex_unlock(&(t->if_lock)); | |
1da177e4 LT |
234 | |
235 | /* Used to help with determining the pkts on receive */ | |
236 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
237 | #define PG_PROC_DIR "pktgen" |
238 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
239 | |
240 | #define MAX_CFLOWS 65536 | |
241 | ||
34954ddc FF |
242 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
243 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
244 | ||
222f1806 | 245 | struct flow_state { |
252e3346 | 246 | __be32 cur_daddr; |
222f1806 | 247 | int count; |
a553e4a6 JHS |
248 | #ifdef CONFIG_XFRM |
249 | struct xfrm_state *x; | |
250 | #endif | |
007a531b | 251 | __u32 flags; |
1da177e4 LT |
252 | }; |
253 | ||
007a531b JHS |
254 | /* flow flag bits */ |
255 | #define F_INIT (1<<0) /* flow has been initialized */ | |
256 | ||
1da177e4 | 257 | struct pktgen_dev { |
1da177e4 LT |
258 | /* |
259 | * Try to keep frequent/infrequent used vars. separated. | |
260 | */ | |
39df232f SH |
261 | struct proc_dir_entry *entry; /* proc file */ |
262 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 263 | struct list_head list; /* chaining in the thread's run-queue */ |
8788370a | 264 | struct rcu_head rcu; /* freed by RCU */ |
1da177e4 | 265 | |
63adc6fb | 266 | int running; /* if false, the test will stop */ |
1da177e4 | 267 | |
222f1806 LC |
268 | /* If min != max, then we will either do a linear iteration, or |
269 | * we will do a random selection from within the range. | |
270 | */ | |
271 | __u32 flags; | |
62f64aed | 272 | int xmit_mode; |
68bf9f0b AW |
273 | int min_pkt_size; |
274 | int max_pkt_size; | |
16dab72f | 275 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 276 | int nfrags; |
62f64aed AS |
277 | int removal_mark; /* non-zero => the device is marked for |
278 | * removal by worker thread */ | |
279 | ||
26ad7879 | 280 | struct page *page; |
fd29cf72 SH |
281 | u64 delay; /* nano-seconds */ |
282 | ||
222f1806 LC |
283 | __u64 count; /* Default No packets to send */ |
284 | __u64 sofar; /* How many pkts we've sent so far */ | |
285 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 286 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
287 | |
288 | /* runtime counters relating to clone_skb */ | |
222f1806 | 289 | |
222f1806 LC |
290 | __u32 clone_count; |
291 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
292 | * Or a failed transmit of some sort? |
293 | * This will keep sequence numbers in order | |
222f1806 | 294 | */ |
fd29cf72 SH |
295 | ktime_t next_tx; |
296 | ktime_t started_at; | |
297 | ktime_t stopped_at; | |
298 | u64 idle_acc; /* nano-seconds */ | |
299 | ||
222f1806 LC |
300 | __u32 seq_num; |
301 | ||
63adc6fb SH |
302 | int clone_skb; /* |
303 | * Use multiple SKBs during packet gen. | |
304 | * If this number is greater than 1, then | |
305 | * that many copies of the same packet will be | |
306 | * sent before a new packet is allocated. | |
307 | * If you want to send 1024 identical packets | |
308 | * before creating a new packet, | |
309 | * set clone_skb to 1024. | |
222f1806 LC |
310 | */ |
311 | ||
312 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
313 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
314 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
315 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
316 | ||
317 | struct in6_addr in6_saddr; | |
318 | struct in6_addr in6_daddr; | |
319 | struct in6_addr cur_in6_daddr; | |
320 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 321 | /* For ranges */ |
222f1806 LC |
322 | struct in6_addr min_in6_daddr; |
323 | struct in6_addr max_in6_daddr; | |
324 | struct in6_addr min_in6_saddr; | |
325 | struct in6_addr max_in6_saddr; | |
326 | ||
327 | /* If we're doing ranges, random or incremental, then this | |
328 | * defines the min/max for those ranges. | |
329 | */ | |
252e3346 AV |
330 | __be32 saddr_min; /* inclusive, source IP address */ |
331 | __be32 saddr_max; /* exclusive, source IP address */ | |
332 | __be32 daddr_min; /* inclusive, dest IP address */ | |
333 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
334 | |
335 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
336 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
337 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
338 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
339 | ||
1ca7768c | 340 | /* DSCP + ECN */ |
63adc6fb SH |
341 | __u8 tos; /* six MSB of (former) IPv4 TOS |
342 | are for dscp codepoint */ | |
343 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
344 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 345 | |
ca6549af | 346 | /* MPLS */ |
95c96174 | 347 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
348 | __be32 labels[MAX_MPLS_LABELS]; |
349 | ||
34954ddc FF |
350 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
351 | __u8 vlan_p; | |
352 | __u8 vlan_cfi; | |
353 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
354 | ||
355 | __u8 svlan_p; | |
356 | __u8 svlan_cfi; | |
357 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
358 | ||
222f1806 LC |
359 | __u32 src_mac_count; /* How many MACs to iterate through */ |
360 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
361 | ||
362 | unsigned char dst_mac[ETH_ALEN]; | |
363 | unsigned char src_mac[ETH_ALEN]; | |
364 | ||
365 | __u32 cur_dst_mac_offset; | |
366 | __u32 cur_src_mac_offset; | |
252e3346 AV |
367 | __be32 cur_saddr; |
368 | __be32 cur_daddr; | |
66ed1e5e | 369 | __u16 ip_id; |
222f1806 LC |
370 | __u16 cur_udp_dst; |
371 | __u16 cur_udp_src; | |
45b270f8 | 372 | __u16 cur_queue_map; |
222f1806 | 373 | __u32 cur_pkt_size; |
baac8564 | 374 | __u32 last_pkt_size; |
222f1806 LC |
375 | |
376 | __u8 hh[14]; | |
377 | /* = { | |
378 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
379 | ||
380 | We fill in SRC address later | |
381 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
382 | 0x08, 0x00 | |
383 | }; | |
384 | */ | |
385 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
386 | ||
63adc6fb | 387 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
388 | * are transmitting the same one multiple times |
389 | */ | |
63adc6fb SH |
390 | struct net_device *odev; /* The out-going device. |
391 | * Note that the device should have it's | |
392 | * pg_info pointer pointing back to this | |
393 | * device. | |
394 | * Set when the user specifies the out-going | |
395 | * device name (not when the inject is | |
396 | * started as it used to do.) | |
397 | */ | |
593f63b0 | 398 | char odevname[32]; |
1da177e4 | 399 | struct flow_state *flows; |
95c96174 ED |
400 | unsigned int cflows; /* Concurrent flows (config) */ |
401 | unsigned int lflow; /* Flow length (config) */ | |
402 | unsigned int nflows; /* accumulated flows (stats) */ | |
403 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
404 | |
405 | u16 queue_map_min; | |
406 | u16 queue_map_max; | |
9e50e3ac | 407 | __u32 skb_priority; /* skb priority field */ |
38b2cf29 | 408 | unsigned int burst; /* number of duplicated packets to burst */ |
e99b99b4 | 409 | int node; /* Memory node */ |
45b270f8 | 410 | |
a553e4a6 JHS |
411 | #ifdef CONFIG_XFRM |
412 | __u8 ipsmode; /* IPSEC mode (config) */ | |
413 | __u8 ipsproto; /* IPSEC type (config) */ | |
de4aee7d | 414 | __u32 spi; |
b6ca8bd5 | 415 | struct xfrm_dst xdst; |
cf93d47e | 416 | struct dst_ops dstops; |
a553e4a6 | 417 | #endif |
39df232f | 418 | char result[512]; |
1da177e4 LT |
419 | }; |
420 | ||
421 | struct pktgen_hdr { | |
252e3346 AV |
422 | __be32 pgh_magic; |
423 | __be32 seq_num; | |
424 | __be32 tv_sec; | |
425 | __be32 tv_usec; | |
1da177e4 LT |
426 | }; |
427 | ||
4e58a027 | 428 | |
c7d03a00 | 429 | static unsigned int pg_net_id __read_mostly; |
4e58a027 CW |
430 | |
431 | struct pktgen_net { | |
432 | struct net *net; | |
433 | struct proc_dir_entry *proc_dir; | |
434 | struct list_head pktgen_threads; | |
435 | bool pktgen_exiting; | |
436 | }; | |
551eaff1 | 437 | |
1da177e4 | 438 | struct pktgen_thread { |
9a0b1e8b | 439 | struct mutex if_lock; /* for list of devices */ |
c26a8016 | 440 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 441 | struct list_head th_list; |
ee74baa7 | 442 | struct task_struct *tsk; |
222f1806 | 443 | char result[512]; |
222f1806 | 444 | |
63adc6fb SH |
445 | /* Field for thread to receive "posted" events terminate, |
446 | stop ifs etc. */ | |
222f1806 LC |
447 | |
448 | u32 control; | |
1da177e4 LT |
449 | int cpu; |
450 | ||
222f1806 | 451 | wait_queue_head_t queue; |
d3ede327 | 452 | struct completion start_done; |
4e58a027 | 453 | struct pktgen_net *net; |
1da177e4 LT |
454 | }; |
455 | ||
456 | #define REMOVE 1 | |
457 | #define FIND 0 | |
458 | ||
c3d2f52d | 459 | static const char version[] = |
f9467eae JP |
460 | "Packet Generator for packet performance testing. " |
461 | "Version: " VERSION "\n"; | |
1da177e4 | 462 | |
222f1806 LC |
463 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
464 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
465 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 466 | const char *ifname, bool exact); |
1da177e4 | 467 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
468 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
469 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
470 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 471 | |
222f1806 | 472 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 473 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 474 | |
1da177e4 | 475 | /* Module parameters, defaults. */ |
65c5b786 SH |
476 | static int pg_count_d __read_mostly = 1000; |
477 | static int pg_delay_d __read_mostly; | |
478 | static int pg_clone_skb_d __read_mostly; | |
479 | static int debug __read_mostly; | |
1da177e4 | 480 | |
222fa076 | 481 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 482 | |
1da177e4 LT |
483 | static struct notifier_block pktgen_notifier_block = { |
484 | .notifier_call = pktgen_device_event, | |
485 | }; | |
486 | ||
1da177e4 | 487 | /* |
4ec93edb | 488 | * /proc handling functions |
1da177e4 LT |
489 | * |
490 | */ | |
491 | ||
d50a6b56 | 492 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 493 | { |
c3d2f52d | 494 | seq_puts(seq, version); |
d50a6b56 | 495 | return 0; |
1da177e4 LT |
496 | } |
497 | ||
63adc6fb SH |
498 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
499 | size_t count, loff_t *ppos) | |
1da177e4 | 500 | { |
d50a6b56 | 501 | char data[128]; |
4e58a027 | 502 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 503 | |
09455747 MK |
504 | if (!capable(CAP_NET_ADMIN)) |
505 | return -EPERM; | |
1da177e4 | 506 | |
20b0c718 MK |
507 | if (count == 0) |
508 | return -EINVAL; | |
509 | ||
d50a6b56 SH |
510 | if (count > sizeof(data)) |
511 | count = sizeof(data); | |
1da177e4 | 512 | |
09455747 MK |
513 | if (copy_from_user(data, buf, count)) |
514 | return -EFAULT; | |
515 | ||
20b0c718 | 516 | data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ |
1da177e4 | 517 | |
222f1806 | 518 | if (!strcmp(data, "stop")) |
4e58a027 | 519 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 520 | |
222f1806 | 521 | else if (!strcmp(data, "start")) |
4e58a027 | 522 | pktgen_run_all_threads(pn); |
1da177e4 | 523 | |
eb37b41c | 524 | else if (!strcmp(data, "reset")) |
4e58a027 | 525 | pktgen_reset_all_threads(pn); |
eb37b41c | 526 | |
222f1806 | 527 | else |
40207264 | 528 | return -EINVAL; |
1da177e4 | 529 | |
09455747 | 530 | return count; |
1da177e4 LT |
531 | } |
532 | ||
d50a6b56 SH |
533 | static int pgctrl_open(struct inode *inode, struct file *file) |
534 | { | |
d9dda78b | 535 | return single_open(file, pgctrl_show, PDE_DATA(inode)); |
d50a6b56 SH |
536 | } |
537 | ||
9a32144e | 538 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
539 | .open = pgctrl_open, |
540 | .read = seq_read, | |
541 | .llseek = seq_lseek, | |
542 | .write = pgctrl_write, | |
543 | .release = single_release, | |
d50a6b56 SH |
544 | }; |
545 | ||
546 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 547 | { |
648fda74 | 548 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 | 549 | ktime_t stopped; |
99c6d3d2 | 550 | unsigned int i; |
fd29cf72 | 551 | u64 idle; |
222f1806 LC |
552 | |
553 | seq_printf(seq, | |
554 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
555 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
556 | pkt_dev->max_pkt_size); | |
557 | ||
558 | seq_printf(seq, | |
fd29cf72 SH |
559 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
560 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 561 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
562 | |
563 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
564 | pkt_dev->lflow); | |
565 | ||
45b270f8 RO |
566 | seq_printf(seq, |
567 | " queue_map_min: %u queue_map_max: %u\n", | |
568 | pkt_dev->queue_map_min, | |
569 | pkt_dev->queue_map_max); | |
570 | ||
9e50e3ac JF |
571 | if (pkt_dev->skb_priority) |
572 | seq_printf(seq, " skb_priority: %u\n", | |
573 | pkt_dev->skb_priority); | |
574 | ||
222f1806 | 575 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 576 | seq_printf(seq, |
47a0200d AD |
577 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
578 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
579 | &pkt_dev->in6_saddr, | |
580 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
581 | &pkt_dev->in6_daddr, | |
582 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
583 | } else { |
584 | seq_printf(seq, | |
585 | " dst_min: %s dst_max: %s\n", | |
586 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 587 | seq_printf(seq, |
d079abd1 | 588 | " src_min: %s src_max: %s\n", |
63adc6fb SH |
589 | pkt_dev->src_min, pkt_dev->src_max); |
590 | } | |
1da177e4 | 591 | |
222f1806 | 592 | seq_puts(seq, " src_mac: "); |
1da177e4 | 593 | |
e174961c JB |
594 | seq_printf(seq, "%pM ", |
595 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
596 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 | 597 | |
97dc48e2 | 598 | seq_puts(seq, "dst_mac: "); |
e174961c | 599 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
600 | |
601 | seq_printf(seq, | |
63adc6fb SH |
602 | " udp_src_min: %d udp_src_max: %d" |
603 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
604 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
605 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
606 | ||
607 | seq_printf(seq, | |
ca6549af | 608 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 609 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 610 | |
ca6549af | 611 | if (pkt_dev->nr_labels) { |
97dc48e2 | 612 | seq_puts(seq, " mpls: "); |
e71a4783 | 613 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
614 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
615 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
616 | } | |
617 | ||
63adc6fb | 618 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 619 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
620 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
621 | pkt_dev->vlan_cfi); | |
34954ddc | 622 | |
63adc6fb | 623 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 624 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
625 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
626 | pkt_dev->svlan_cfi); | |
34954ddc | 627 | |
63adc6fb | 628 | if (pkt_dev->tos) |
1ca7768c | 629 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 630 | |
63adc6fb | 631 | if (pkt_dev->traffic_class) |
1ca7768c | 632 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 633 | |
38b2cf29 AS |
634 | if (pkt_dev->burst > 1) |
635 | seq_printf(seq, " burst: %d\n", pkt_dev->burst); | |
636 | ||
e99b99b4 RO |
637 | if (pkt_dev->node >= 0) |
638 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
639 | ||
62f64aed AS |
640 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) |
641 | seq_puts(seq, " xmit_mode: netif_receive\n"); | |
0967f244 JF |
642 | else if (pkt_dev->xmit_mode == M_QUEUE_XMIT) |
643 | seq_puts(seq, " xmit_mode: xmit_queue\n"); | |
62f64aed | 644 | |
97dc48e2 | 645 | seq_puts(seq, " Flags: "); |
ca6549af | 646 | |
99c6d3d2 DS |
647 | for (i = 0; i < NR_PKT_FLAGS; i++) { |
648 | if (i == F_FLOW_SEQ) | |
649 | if (!pkt_dev->cflows) | |
650 | continue; | |
afb84b62 | 651 | |
99c6d3d2 DS |
652 | if (pkt_dev->flags & (1 << i)) |
653 | seq_printf(seq, "%s ", pkt_flag_names[i]); | |
654 | else if (i == F_FLOW_SEQ) | |
655 | seq_puts(seq, "FLOW_RND "); | |
007a531b | 656 | |
a553e4a6 | 657 | #ifdef CONFIG_XFRM |
99c6d3d2 | 658 | if (i == F_IPSEC && pkt_dev->spi) |
8101328b | 659 | seq_printf(seq, "spi:%u", pkt_dev->spi); |
a553e4a6 | 660 | #endif |
99c6d3d2 | 661 | } |
e99b99b4 | 662 | |
222f1806 LC |
663 | seq_puts(seq, "\n"); |
664 | ||
fd29cf72 | 665 | /* not really stopped, more like last-running-at */ |
398f382c | 666 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
667 | idle = pkt_dev->idle_acc; |
668 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 669 | |
222f1806 | 670 | seq_printf(seq, |
fd29cf72 | 671 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 672 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
673 | (unsigned long long)pkt_dev->errors); |
674 | ||
675 | seq_printf(seq, | |
676 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
677 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
678 | (unsigned long long) ktime_to_us(stopped), | |
679 | (unsigned long long) idle); | |
1da177e4 | 680 | |
222f1806 LC |
681 | seq_printf(seq, |
682 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
683 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
684 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 685 | |
222f1806 | 686 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
687 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
688 | &pkt_dev->cur_in6_saddr, | |
689 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 690 | } else |
0373a946 AW |
691 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
692 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 693 | |
222f1806 | 694 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 695 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 696 | |
45b270f8 RO |
697 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
698 | ||
222f1806 | 699 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
700 | |
701 | if (pkt_dev->result[0]) | |
222f1806 | 702 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 703 | else |
97dc48e2 | 704 | seq_puts(seq, "Result: Idle\n"); |
1da177e4 | 705 | |
d50a6b56 | 706 | return 0; |
1da177e4 LT |
707 | } |
708 | ||
ca6549af | 709 | |
63adc6fb SH |
710 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
711 | __u32 *num) | |
ca6549af SW |
712 | { |
713 | int i = 0; | |
714 | *num = 0; | |
715 | ||
e71a4783 | 716 | for (; i < maxlen; i++) { |
82fd5b5d | 717 | int value; |
ca6549af SW |
718 | char c; |
719 | *num <<= 4; | |
720 | if (get_user(c, &user_buffer[i])) | |
721 | return -EFAULT; | |
82fd5b5d AS |
722 | value = hex_to_bin(c); |
723 | if (value >= 0) | |
724 | *num |= value; | |
ca6549af SW |
725 | else |
726 | break; | |
727 | } | |
728 | return i; | |
729 | } | |
730 | ||
222f1806 LC |
731 | static int count_trail_chars(const char __user * user_buffer, |
732 | unsigned int maxlen) | |
1da177e4 LT |
733 | { |
734 | int i; | |
735 | ||
736 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
737 | char c; |
738 | if (get_user(c, &user_buffer[i])) | |
739 | return -EFAULT; | |
740 | switch (c) { | |
1da177e4 LT |
741 | case '\"': |
742 | case '\n': | |
743 | case '\r': | |
744 | case '\t': | |
745 | case ' ': | |
746 | case '=': | |
747 | break; | |
748 | default: | |
749 | goto done; | |
3ff50b79 | 750 | } |
1da177e4 LT |
751 | } |
752 | done: | |
753 | return i; | |
754 | } | |
755 | ||
bf0813bd PG |
756 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
757 | unsigned long *num) | |
1da177e4 | 758 | { |
d6182223 | 759 | int i; |
1da177e4 | 760 | *num = 0; |
222f1806 | 761 | |
d6182223 | 762 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
763 | char c; |
764 | if (get_user(c, &user_buffer[i])) | |
765 | return -EFAULT; | |
766 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 767 | *num *= 10; |
222f1806 | 768 | *num += c - '0'; |
1da177e4 LT |
769 | } else |
770 | break; | |
771 | } | |
772 | return i; | |
773 | } | |
774 | ||
222f1806 | 775 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 776 | { |
d6182223 | 777 | int i; |
1da177e4 | 778 | |
d6182223 | 779 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
780 | char c; |
781 | if (get_user(c, &user_buffer[i])) | |
782 | return -EFAULT; | |
783 | switch (c) { | |
1da177e4 LT |
784 | case '\"': |
785 | case '\n': | |
786 | case '\r': | |
787 | case '\t': | |
788 | case ' ': | |
789 | goto done_str; | |
1da177e4 LT |
790 | default: |
791 | break; | |
3ff50b79 | 792 | } |
1da177e4 LT |
793 | } |
794 | done_str: | |
1da177e4 LT |
795 | return i; |
796 | } | |
797 | ||
ca6549af SW |
798 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
799 | { | |
95c96174 | 800 | unsigned int n = 0; |
ca6549af SW |
801 | char c; |
802 | ssize_t i = 0; | |
803 | int len; | |
804 | ||
805 | pkt_dev->nr_labels = 0; | |
806 | do { | |
807 | __u32 tmp; | |
1ca7768c | 808 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
809 | if (len <= 0) |
810 | return len; | |
811 | pkt_dev->labels[n] = htonl(tmp); | |
812 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
813 | pkt_dev->flags |= F_MPLS_RND; | |
814 | i += len; | |
815 | if (get_user(c, &buffer[i])) | |
816 | return -EFAULT; | |
817 | i++; | |
818 | n++; | |
819 | if (n >= MAX_MPLS_LABELS) | |
820 | return -E2BIG; | |
e71a4783 | 821 | } while (c == ','); |
ca6549af SW |
822 | |
823 | pkt_dev->nr_labels = n; | |
824 | return i; | |
825 | } | |
826 | ||
52e12d5d DS |
827 | static __u32 pktgen_read_flag(const char *f, bool *disable) |
828 | { | |
829 | __u32 i; | |
830 | ||
831 | if (f[0] == '!') { | |
832 | *disable = true; | |
833 | f++; | |
834 | } | |
835 | ||
836 | for (i = 0; i < NR_PKT_FLAGS; i++) { | |
837 | if (!IS_ENABLED(CONFIG_XFRM) && i == IPSEC_SHIFT) | |
838 | continue; | |
839 | ||
840 | /* allow only disabling ipv6 flag */ | |
841 | if (!*disable && i == IPV6_SHIFT) | |
842 | continue; | |
843 | ||
844 | if (strcmp(f, pkt_flag_names[i]) == 0) | |
845 | return 1 << i; | |
846 | } | |
847 | ||
848 | if (strcmp(f, "FLOW_RND") == 0) { | |
849 | *disable = !*disable; | |
850 | return F_FLOW_SEQ; | |
851 | } | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
222f1806 LC |
856 | static ssize_t pktgen_if_write(struct file *file, |
857 | const char __user * user_buffer, size_t count, | |
858 | loff_t * offset) | |
1da177e4 | 859 | { |
8a994a71 | 860 | struct seq_file *seq = file->private_data; |
222f1806 | 861 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 862 | int i, max, len; |
1da177e4 LT |
863 | char name[16], valstr[32]; |
864 | unsigned long value = 0; | |
222f1806 LC |
865 | char *pg_result = NULL; |
866 | int tmp = 0; | |
1da177e4 | 867 | char buf[128]; |
222f1806 LC |
868 | |
869 | pg_result = &(pkt_dev->result[0]); | |
870 | ||
1da177e4 | 871 | if (count < 1) { |
294a0b7f | 872 | pr_warn("wrong command format\n"); |
1da177e4 LT |
873 | return -EINVAL; |
874 | } | |
222f1806 | 875 | |
d6182223 PG |
876 | max = count; |
877 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 878 | if (tmp < 0) { |
294a0b7f | 879 | pr_warn("illegal format\n"); |
222f1806 | 880 | return tmp; |
1da177e4 | 881 | } |
d6182223 | 882 | i = tmp; |
222f1806 | 883 | |
1da177e4 LT |
884 | /* Read variable name */ |
885 | ||
886 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 887 | if (len < 0) |
222f1806 | 888 | return len; |
63adc6fb | 889 | |
1da177e4 | 890 | memset(name, 0, sizeof(name)); |
222f1806 | 891 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
892 | return -EFAULT; |
893 | i += len; | |
222f1806 LC |
894 | |
895 | max = count - i; | |
1da177e4 | 896 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
897 | if (len < 0) |
898 | return len; | |
899 | ||
1da177e4 LT |
900 | i += len; |
901 | ||
902 | if (debug) { | |
a870a02c AB |
903 | size_t copy = min_t(size_t, count + 1, 1024); |
904 | char *tp = strndup_user(user_buffer, copy); | |
905 | ||
906 | if (IS_ERR(tp)) | |
907 | return PTR_ERR(tp); | |
908 | ||
909 | pr_debug("%s,%zu buffer -:%s:-\n", name, count, tp); | |
29d1df72 | 910 | kfree(tp); |
222f1806 | 911 | } |
1da177e4 LT |
912 | |
913 | if (!strcmp(name, "min_pkt_size")) { | |
914 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 915 | if (len < 0) |
222f1806 | 916 | return len; |
63adc6fb | 917 | |
1da177e4 | 918 | i += len; |
222f1806 LC |
919 | if (value < 14 + 20 + 8) |
920 | value = 14 + 20 + 8; | |
921 | if (value != pkt_dev->min_pkt_size) { | |
922 | pkt_dev->min_pkt_size = value; | |
923 | pkt_dev->cur_pkt_size = value; | |
924 | } | |
925 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
926 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
927 | return count; |
928 | } | |
929 | ||
222f1806 | 930 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 931 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 932 | if (len < 0) |
222f1806 | 933 | return len; |
63adc6fb | 934 | |
1da177e4 | 935 | i += len; |
222f1806 LC |
936 | if (value < 14 + 20 + 8) |
937 | value = 14 + 20 + 8; | |
938 | if (value != pkt_dev->max_pkt_size) { | |
939 | pkt_dev->max_pkt_size = value; | |
940 | pkt_dev->cur_pkt_size = value; | |
941 | } | |
942 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
943 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
944 | return count; |
945 | } | |
946 | ||
222f1806 | 947 | /* Shortcut for min = max */ |
1da177e4 LT |
948 | |
949 | if (!strcmp(name, "pkt_size")) { | |
950 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 951 | if (len < 0) |
222f1806 | 952 | return len; |
63adc6fb | 953 | |
1da177e4 | 954 | i += len; |
222f1806 LC |
955 | if (value < 14 + 20 + 8) |
956 | value = 14 + 20 + 8; | |
957 | if (value != pkt_dev->min_pkt_size) { | |
958 | pkt_dev->min_pkt_size = value; | |
959 | pkt_dev->max_pkt_size = value; | |
960 | pkt_dev->cur_pkt_size = value; | |
961 | } | |
1da177e4 LT |
962 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
963 | return count; | |
964 | } | |
965 | ||
222f1806 | 966 | if (!strcmp(name, "debug")) { |
1da177e4 | 967 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 968 | if (len < 0) |
222f1806 | 969 | return len; |
63adc6fb | 970 | |
1da177e4 | 971 | i += len; |
222f1806 | 972 | debug = value; |
1da177e4 LT |
973 | sprintf(pg_result, "OK: debug=%u", debug); |
974 | return count; | |
975 | } | |
976 | ||
222f1806 | 977 | if (!strcmp(name, "frags")) { |
1da177e4 | 978 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 979 | if (len < 0) |
222f1806 | 980 | return len; |
63adc6fb | 981 | |
1da177e4 LT |
982 | i += len; |
983 | pkt_dev->nfrags = value; | |
984 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
985 | return count; | |
986 | } | |
987 | if (!strcmp(name, "delay")) { | |
988 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 989 | if (len < 0) |
222f1806 | 990 | return len; |
63adc6fb | 991 | |
1da177e4 | 992 | i += len; |
fd29cf72 SH |
993 | if (value == 0x7FFFFFFF) |
994 | pkt_dev->delay = ULLONG_MAX; | |
995 | else | |
9240d715 | 996 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
997 | |
998 | sprintf(pg_result, "OK: delay=%llu", | |
999 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
1000 | return count; |
1001 | } | |
43d28b65 DT |
1002 | if (!strcmp(name, "rate")) { |
1003 | len = num_arg(&user_buffer[i], 10, &value); | |
1004 | if (len < 0) | |
1005 | return len; | |
1006 | ||
1007 | i += len; | |
1008 | if (!value) | |
1009 | return len; | |
1010 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
1011 | if (debug) | |
f9467eae | 1012 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1013 | |
1014 | sprintf(pg_result, "OK: rate=%lu", value); | |
1015 | return count; | |
1016 | } | |
1017 | if (!strcmp(name, "ratep")) { | |
1018 | len = num_arg(&user_buffer[i], 10, &value); | |
1019 | if (len < 0) | |
1020 | return len; | |
1021 | ||
1022 | i += len; | |
1023 | if (!value) | |
1024 | return len; | |
1025 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1026 | if (debug) | |
f9467eae | 1027 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1028 | |
1029 | sprintf(pg_result, "OK: rate=%lu", value); | |
1030 | return count; | |
1031 | } | |
222f1806 | 1032 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1033 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1034 | if (len < 0) |
222f1806 | 1035 | return len; |
63adc6fb | 1036 | |
1da177e4 | 1037 | i += len; |
222f1806 LC |
1038 | if (value != pkt_dev->udp_src_min) { |
1039 | pkt_dev->udp_src_min = value; | |
1040 | pkt_dev->cur_udp_src = value; | |
1041 | } | |
1da177e4 LT |
1042 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1043 | return count; | |
1044 | } | |
222f1806 | 1045 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1046 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1047 | if (len < 0) |
222f1806 | 1048 | return len; |
63adc6fb | 1049 | |
1da177e4 | 1050 | i += len; |
222f1806 LC |
1051 | if (value != pkt_dev->udp_dst_min) { |
1052 | pkt_dev->udp_dst_min = value; | |
1053 | pkt_dev->cur_udp_dst = value; | |
1054 | } | |
1da177e4 LT |
1055 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1056 | return count; | |
1057 | } | |
222f1806 | 1058 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1059 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1060 | if (len < 0) |
222f1806 | 1061 | return len; |
63adc6fb | 1062 | |
1da177e4 | 1063 | i += len; |
222f1806 LC |
1064 | if (value != pkt_dev->udp_src_max) { |
1065 | pkt_dev->udp_src_max = value; | |
1066 | pkt_dev->cur_udp_src = value; | |
1067 | } | |
1da177e4 LT |
1068 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1069 | return count; | |
1070 | } | |
222f1806 | 1071 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1072 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1073 | if (len < 0) |
222f1806 | 1074 | return len; |
63adc6fb | 1075 | |
1da177e4 | 1076 | i += len; |
222f1806 LC |
1077 | if (value != pkt_dev->udp_dst_max) { |
1078 | pkt_dev->udp_dst_max = value; | |
1079 | pkt_dev->cur_udp_dst = value; | |
1080 | } | |
1da177e4 LT |
1081 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1082 | return count; | |
1083 | } | |
1084 | if (!strcmp(name, "clone_skb")) { | |
1085 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1086 | if (len < 0) |
222f1806 | 1087 | return len; |
d8873315 | 1088 | if ((value > 0) && |
62f64aed AS |
1089 | ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) || |
1090 | !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
d8873315 | 1091 | return -ENOTSUPP; |
1da177e4 | 1092 | i += len; |
222f1806 LC |
1093 | pkt_dev->clone_skb = value; |
1094 | ||
1da177e4 LT |
1095 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1096 | return count; | |
1097 | } | |
1098 | if (!strcmp(name, "count")) { | |
1099 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1100 | if (len < 0) |
222f1806 | 1101 | return len; |
63adc6fb | 1102 | |
1da177e4 LT |
1103 | i += len; |
1104 | pkt_dev->count = value; | |
1105 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1106 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1107 | return count; |
1108 | } | |
1109 | if (!strcmp(name, "src_mac_count")) { | |
1110 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1111 | if (len < 0) |
222f1806 | 1112 | return len; |
63adc6fb | 1113 | |
1da177e4 LT |
1114 | i += len; |
1115 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1116 | pkt_dev->src_mac_count = value; |
1117 | pkt_dev->cur_src_mac_offset = 0; | |
1118 | } | |
1119 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1120 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1121 | return count; |
1122 | } | |
1123 | if (!strcmp(name, "dst_mac_count")) { | |
1124 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1125 | if (len < 0) |
222f1806 | 1126 | return len; |
63adc6fb | 1127 | |
1da177e4 LT |
1128 | i += len; |
1129 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1130 | pkt_dev->dst_mac_count = value; |
1131 | pkt_dev->cur_dst_mac_offset = 0; | |
1132 | } | |
1133 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1134 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1135 | return count; |
1136 | } | |
38b2cf29 AS |
1137 | if (!strcmp(name, "burst")) { |
1138 | len = num_arg(&user_buffer[i], 10, &value); | |
1139 | if (len < 0) | |
1140 | return len; | |
1141 | ||
1142 | i += len; | |
0967f244 JF |
1143 | if ((value > 1) && |
1144 | ((pkt_dev->xmit_mode == M_QUEUE_XMIT) || | |
1145 | ((pkt_dev->xmit_mode == M_START_XMIT) && | |
1146 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))))) | |
52d6c8c6 | 1147 | return -ENOTSUPP; |
38b2cf29 AS |
1148 | pkt_dev->burst = value < 1 ? 1 : value; |
1149 | sprintf(pg_result, "OK: burst=%d", pkt_dev->burst); | |
1150 | return count; | |
1151 | } | |
e99b99b4 RO |
1152 | if (!strcmp(name, "node")) { |
1153 | len = num_arg(&user_buffer[i], 10, &value); | |
1154 | if (len < 0) | |
1155 | return len; | |
1156 | ||
1157 | i += len; | |
1158 | ||
1159 | if (node_possible(value)) { | |
1160 | pkt_dev->node = value; | |
1161 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1162 | if (pkt_dev->page) { |
1163 | put_page(pkt_dev->page); | |
1164 | pkt_dev->page = NULL; | |
1165 | } | |
e99b99b4 RO |
1166 | } |
1167 | else | |
1168 | sprintf(pg_result, "ERROR: node not possible"); | |
1169 | return count; | |
1170 | } | |
62f64aed AS |
1171 | if (!strcmp(name, "xmit_mode")) { |
1172 | char f[32]; | |
1173 | ||
1174 | memset(f, 0, 32); | |
1175 | len = strn_len(&user_buffer[i], sizeof(f) - 1); | |
1176 | if (len < 0) | |
1177 | return len; | |
1178 | ||
1179 | if (copy_from_user(f, &user_buffer[i], len)) | |
1180 | return -EFAULT; | |
1181 | i += len; | |
1182 | ||
1183 | if (strcmp(f, "start_xmit") == 0) { | |
1184 | pkt_dev->xmit_mode = M_START_XMIT; | |
1185 | } else if (strcmp(f, "netif_receive") == 0) { | |
1186 | /* clone_skb set earlier, not supported in this mode */ | |
1187 | if (pkt_dev->clone_skb > 0) | |
1188 | return -ENOTSUPP; | |
1189 | ||
1190 | pkt_dev->xmit_mode = M_NETIF_RECEIVE; | |
9eea9222 AS |
1191 | |
1192 | /* make sure new packet is allocated every time | |
1193 | * pktgen_xmit() is called | |
1194 | */ | |
1195 | pkt_dev->last_ok = 1; | |
1196 | ||
1197 | /* override clone_skb if user passed default value | |
1198 | * at module loading time | |
1199 | */ | |
1200 | pkt_dev->clone_skb = 0; | |
0967f244 JF |
1201 | } else if (strcmp(f, "queue_xmit") == 0) { |
1202 | pkt_dev->xmit_mode = M_QUEUE_XMIT; | |
1203 | pkt_dev->last_ok = 1; | |
62f64aed AS |
1204 | } else { |
1205 | sprintf(pg_result, | |
1206 | "xmit_mode -:%s:- unknown\nAvailable modes: %s", | |
1207 | f, "start_xmit, netif_receive\n"); | |
1208 | return count; | |
1209 | } | |
1210 | sprintf(pg_result, "OK: xmit_mode=%s", f); | |
1211 | return count; | |
1212 | } | |
1da177e4 | 1213 | if (!strcmp(name, "flag")) { |
52e12d5d | 1214 | __u32 flag; |
222f1806 | 1215 | char f[32]; |
52e12d5d DS |
1216 | bool disable = false; |
1217 | ||
222f1806 | 1218 | memset(f, 0, 32); |
1da177e4 | 1219 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1220 | if (len < 0) |
222f1806 | 1221 | return len; |
63adc6fb | 1222 | |
1da177e4 LT |
1223 | if (copy_from_user(f, &user_buffer[i], len)) |
1224 | return -EFAULT; | |
1225 | i += len; | |
222f1806 | 1226 | |
52e12d5d | 1227 | flag = pktgen_read_flag(f, &disable); |
222f1806 | 1228 | |
52e12d5d DS |
1229 | if (flag) { |
1230 | if (disable) | |
1231 | pkt_dev->flags &= ~flag; | |
1232 | else | |
1233 | pkt_dev->flags |= flag; | |
1234 | } else { | |
222f1806 LC |
1235 | sprintf(pg_result, |
1236 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1237 | f, | |
1ca7768c | 1238 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
72f8e06f MK |
1239 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " |
1240 | "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " | |
1241 | "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " | |
afb84b62 | 1242 | "NO_TIMESTAMP, " |
72f8e06f MK |
1243 | #ifdef CONFIG_XFRM |
1244 | "IPSEC, " | |
1245 | #endif | |
1246 | "NODE_ALLOC\n"); | |
222f1806 LC |
1247 | return count; |
1248 | } | |
1da177e4 LT |
1249 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1250 | return count; | |
1251 | } | |
1252 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1253 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1254 | if (len < 0) |
222f1806 | 1255 | return len; |
1da177e4 | 1256 | |
222f1806 | 1257 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1258 | return -EFAULT; |
222f1806 LC |
1259 | buf[len] = 0; |
1260 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1261 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
f15f084f | 1262 | strcpy(pkt_dev->dst_min, buf); |
222f1806 LC |
1263 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); |
1264 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1265 | } | |
1266 | if (debug) | |
f342cda7 | 1267 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1268 | i += len; |
1da177e4 LT |
1269 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1270 | return count; | |
1271 | } | |
1272 | if (!strcmp(name, "dst_max")) { | |
1273 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1274 | if (len < 0) |
222f1806 | 1275 | return len; |
63adc6fb | 1276 | |
222f1806 | 1277 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1278 | return -EFAULT; |
222f1806 LC |
1279 | buf[len] = 0; |
1280 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1281 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
f15f084f | 1282 | strcpy(pkt_dev->dst_max, buf); |
222f1806 LC |
1283 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); |
1284 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1285 | } | |
1286 | if (debug) | |
f342cda7 | 1287 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1288 | i += len; |
1289 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1290 | return count; | |
1291 | } | |
1292 | if (!strcmp(name, "dst6")) { | |
1293 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1294 | if (len < 0) |
1295 | return len; | |
1da177e4 LT |
1296 | |
1297 | pkt_dev->flags |= F_IPV6; | |
1298 | ||
222f1806 | 1299 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1300 | return -EFAULT; |
222f1806 | 1301 | buf[len] = 0; |
1da177e4 | 1302 | |
c468fb13 | 1303 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1304 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1305 | |
4e3fd7a0 | 1306 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1307 | |
222f1806 | 1308 | if (debug) |
f342cda7 | 1309 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1310 | |
222f1806 | 1311 | i += len; |
1da177e4 LT |
1312 | sprintf(pg_result, "OK: dst6=%s", buf); |
1313 | return count; | |
1314 | } | |
1315 | if (!strcmp(name, "dst6_min")) { | |
1316 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1317 | if (len < 0) |
1318 | return len; | |
1da177e4 LT |
1319 | |
1320 | pkt_dev->flags |= F_IPV6; | |
1321 | ||
222f1806 | 1322 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1323 | return -EFAULT; |
222f1806 | 1324 | buf[len] = 0; |
1da177e4 | 1325 | |
c468fb13 | 1326 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1327 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1328 | |
4e3fd7a0 | 1329 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1330 | if (debug) |
f342cda7 | 1331 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1332 | |
222f1806 | 1333 | i += len; |
1da177e4 LT |
1334 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1335 | return count; | |
1336 | } | |
1337 | if (!strcmp(name, "dst6_max")) { | |
1338 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1339 | if (len < 0) |
1340 | return len; | |
1da177e4 LT |
1341 | |
1342 | pkt_dev->flags |= F_IPV6; | |
1343 | ||
222f1806 | 1344 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1345 | return -EFAULT; |
222f1806 | 1346 | buf[len] = 0; |
1da177e4 | 1347 | |
c468fb13 | 1348 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1349 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1350 | |
222f1806 | 1351 | if (debug) |
f342cda7 | 1352 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1353 | |
222f1806 | 1354 | i += len; |
1da177e4 LT |
1355 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1356 | return count; | |
1357 | } | |
1358 | if (!strcmp(name, "src6")) { | |
1359 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1360 | if (len < 0) |
1361 | return len; | |
1da177e4 LT |
1362 | |
1363 | pkt_dev->flags |= F_IPV6; | |
1364 | ||
222f1806 | 1365 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1366 | return -EFAULT; |
222f1806 | 1367 | buf[len] = 0; |
1da177e4 | 1368 | |
c468fb13 | 1369 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1370 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1371 | |
4e3fd7a0 | 1372 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1373 | |
222f1806 | 1374 | if (debug) |
f342cda7 | 1375 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1376 | |
1377 | i += len; | |
1da177e4 LT |
1378 | sprintf(pg_result, "OK: src6=%s", buf); |
1379 | return count; | |
1380 | } | |
1381 | if (!strcmp(name, "src_min")) { | |
1382 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1383 | if (len < 0) |
222f1806 | 1384 | return len; |
63adc6fb | 1385 | |
222f1806 | 1386 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1387 | return -EFAULT; |
222f1806 LC |
1388 | buf[len] = 0; |
1389 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1390 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
f15f084f | 1391 | strcpy(pkt_dev->src_min, buf); |
222f1806 LC |
1392 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
1393 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1394 | } | |
1395 | if (debug) | |
f342cda7 | 1396 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1397 | i += len; |
1398 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1399 | return count; | |
1400 | } | |
1401 | if (!strcmp(name, "src_max")) { | |
1402 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1403 | if (len < 0) |
222f1806 | 1404 | return len; |
63adc6fb | 1405 | |
222f1806 | 1406 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1407 | return -EFAULT; |
222f1806 LC |
1408 | buf[len] = 0; |
1409 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1410 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
f15f084f | 1411 | strcpy(pkt_dev->src_max, buf); |
222f1806 LC |
1412 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); |
1413 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1414 | } | |
1415 | if (debug) | |
f342cda7 | 1416 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1417 | i += len; |
1418 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1419 | return count; | |
1420 | } | |
1421 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1422 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1423 | if (len < 0) |
222f1806 | 1424 | return len; |
63adc6fb | 1425 | |
1da177e4 | 1426 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1427 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1428 | return -EFAULT; |
1da177e4 | 1429 | |
4940fc88 AD |
1430 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1431 | return -EINVAL; | |
1da177e4 | 1432 | /* Set up Dest MAC */ |
9ea08b12 | 1433 | ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); |
222f1806 | 1434 | |
4940fc88 | 1435 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1436 | return count; |
1437 | } | |
1438 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1439 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1440 | if (len < 0) |
222f1806 | 1441 | return len; |
63adc6fb | 1442 | |
1da177e4 | 1443 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1444 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1445 | return -EFAULT; |
1da177e4 | 1446 | |
4940fc88 AD |
1447 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1448 | return -EINVAL; | |
ce5d0b47 | 1449 | /* Set up Src MAC */ |
9ea08b12 | 1450 | ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); |
ce5d0b47 | 1451 | |
4940fc88 | 1452 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1453 | return count; |
1454 | } | |
1455 | ||
222f1806 LC |
1456 | if (!strcmp(name, "clear_counters")) { |
1457 | pktgen_clear_counters(pkt_dev); | |
1458 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1459 | return count; | |
1460 | } | |
1da177e4 LT |
1461 | |
1462 | if (!strcmp(name, "flows")) { | |
1463 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1464 | if (len < 0) |
222f1806 | 1465 | return len; |
63adc6fb | 1466 | |
1da177e4 LT |
1467 | i += len; |
1468 | if (value > MAX_CFLOWS) | |
1469 | value = MAX_CFLOWS; | |
1470 | ||
1471 | pkt_dev->cflows = value; | |
1472 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1473 | return count; | |
1474 | } | |
6bae9190 | 1475 | #ifdef CONFIG_XFRM |
de4aee7d FD |
1476 | if (!strcmp(name, "spi")) { |
1477 | len = num_arg(&user_buffer[i], 10, &value); | |
1478 | if (len < 0) | |
1479 | return len; | |
1480 | ||
1481 | i += len; | |
1482 | pkt_dev->spi = value; | |
1483 | sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); | |
1484 | return count; | |
1485 | } | |
6bae9190 | 1486 | #endif |
1da177e4 LT |
1487 | if (!strcmp(name, "flowlen")) { |
1488 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1489 | if (len < 0) |
222f1806 | 1490 | return len; |
63adc6fb | 1491 | |
1da177e4 LT |
1492 | i += len; |
1493 | pkt_dev->lflow = value; | |
1494 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1495 | return count; | |
1496 | } | |
222f1806 | 1497 | |
45b270f8 RO |
1498 | if (!strcmp(name, "queue_map_min")) { |
1499 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1500 | if (len < 0) |
45b270f8 | 1501 | return len; |
63adc6fb | 1502 | |
45b270f8 RO |
1503 | i += len; |
1504 | pkt_dev->queue_map_min = value; | |
1505 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1506 | return count; | |
1507 | } | |
1508 | ||
1509 | if (!strcmp(name, "queue_map_max")) { | |
1510 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1511 | if (len < 0) |
45b270f8 | 1512 | return len; |
63adc6fb | 1513 | |
45b270f8 RO |
1514 | i += len; |
1515 | pkt_dev->queue_map_max = value; | |
1516 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1517 | return count; | |
1518 | } | |
1519 | ||
ca6549af | 1520 | if (!strcmp(name, "mpls")) { |
95c96174 | 1521 | unsigned int n, cnt; |
cfcabdcc | 1522 | |
ca6549af | 1523 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1524 | if (len < 0) |
1525 | return len; | |
ca6549af | 1526 | i += len; |
cfcabdcc | 1527 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1528 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1529 | cnt += sprintf(pg_result + cnt, |
1530 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1531 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1532 | |
1533 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1534 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1535 | pkt_dev->svlan_id = 0xffff; | |
1536 | ||
1537 | if (debug) | |
f342cda7 | 1538 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1539 | } |
1540 | return count; | |
1541 | } | |
1542 | ||
1543 | if (!strcmp(name, "vlan_id")) { | |
1544 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1545 | if (len < 0) |
34954ddc | 1546 | return len; |
63adc6fb | 1547 | |
34954ddc FF |
1548 | i += len; |
1549 | if (value <= 4095) { | |
1550 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1551 | ||
1552 | if (debug) | |
f342cda7 | 1553 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1554 | |
1555 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1556 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1557 | |
1558 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1559 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1560 | } else { | |
1561 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1562 | pkt_dev->svlan_id = 0xffff; | |
1563 | ||
1564 | if (debug) | |
f342cda7 | 1565 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1566 | } |
1567 | return count; | |
1568 | } | |
1569 | ||
1570 | if (!strcmp(name, "vlan_p")) { | |
1571 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1572 | if (len < 0) |
34954ddc | 1573 | return len; |
63adc6fb | 1574 | |
34954ddc FF |
1575 | i += len; |
1576 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1577 | pkt_dev->vlan_p = value; | |
1578 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1579 | } else { | |
1580 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1581 | } | |
1582 | return count; | |
1583 | } | |
1584 | ||
1585 | if (!strcmp(name, "vlan_cfi")) { | |
1586 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1587 | if (len < 0) |
34954ddc | 1588 | return len; |
63adc6fb | 1589 | |
34954ddc FF |
1590 | i += len; |
1591 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1592 | pkt_dev->vlan_cfi = value; | |
1593 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1594 | } else { | |
1595 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1596 | } | |
1597 | return count; | |
1598 | } | |
1599 | ||
1600 | if (!strcmp(name, "svlan_id")) { | |
1601 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1602 | if (len < 0) |
34954ddc | 1603 | return len; |
63adc6fb | 1604 | |
34954ddc FF |
1605 | i += len; |
1606 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1607 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1608 | ||
1609 | if (debug) | |
f342cda7 | 1610 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1611 | |
1612 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1613 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1614 | |
1615 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1616 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1617 | } else { | |
1618 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1619 | pkt_dev->svlan_id = 0xffff; | |
1620 | ||
1621 | if (debug) | |
f342cda7 | 1622 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1623 | } |
1624 | return count; | |
1625 | } | |
1626 | ||
1627 | if (!strcmp(name, "svlan_p")) { | |
1628 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1629 | if (len < 0) |
34954ddc | 1630 | return len; |
63adc6fb | 1631 | |
34954ddc FF |
1632 | i += len; |
1633 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1634 | pkt_dev->svlan_p = value; | |
1635 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1636 | } else { | |
1637 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1638 | } | |
1639 | return count; | |
1640 | } | |
1641 | ||
1642 | if (!strcmp(name, "svlan_cfi")) { | |
1643 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1644 | if (len < 0) |
34954ddc | 1645 | return len; |
63adc6fb | 1646 | |
34954ddc FF |
1647 | i += len; |
1648 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1649 | pkt_dev->svlan_cfi = value; | |
1650 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1651 | } else { | |
1652 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1653 | } | |
ca6549af SW |
1654 | return count; |
1655 | } | |
1656 | ||
1ca7768c FF |
1657 | if (!strcmp(name, "tos")) { |
1658 | __u32 tmp_value = 0; | |
1659 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1660 | if (len < 0) |
1ca7768c | 1661 | return len; |
63adc6fb | 1662 | |
1ca7768c FF |
1663 | i += len; |
1664 | if (len == 2) { | |
1665 | pkt_dev->tos = tmp_value; | |
1666 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1667 | } else { | |
1668 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1669 | } | |
1670 | return count; | |
1671 | } | |
1672 | ||
1673 | if (!strcmp(name, "traffic_class")) { | |
1674 | __u32 tmp_value = 0; | |
1675 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1676 | if (len < 0) |
1ca7768c | 1677 | return len; |
63adc6fb | 1678 | |
1ca7768c FF |
1679 | i += len; |
1680 | if (len == 2) { | |
1681 | pkt_dev->traffic_class = tmp_value; | |
1682 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1683 | } else { | |
1684 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1685 | } | |
1686 | return count; | |
1687 | } | |
1688 | ||
9e50e3ac JF |
1689 | if (!strcmp(name, "skb_priority")) { |
1690 | len = num_arg(&user_buffer[i], 9, &value); | |
1691 | if (len < 0) | |
1692 | return len; | |
1693 | ||
1694 | i += len; | |
1695 | pkt_dev->skb_priority = value; | |
1696 | sprintf(pg_result, "OK: skb_priority=%i", | |
1697 | pkt_dev->skb_priority); | |
1698 | return count; | |
1699 | } | |
1700 | ||
1da177e4 LT |
1701 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1702 | return -EINVAL; | |
1703 | } | |
1704 | ||
d50a6b56 | 1705 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1706 | { |
d9dda78b | 1707 | return single_open(file, pktgen_if_show, PDE_DATA(inode)); |
d50a6b56 | 1708 | } |
1da177e4 | 1709 | |
9a32144e | 1710 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1711 | .open = pktgen_if_open, |
1712 | .read = seq_read, | |
1713 | .llseek = seq_lseek, | |
1714 | .write = pktgen_if_write, | |
1715 | .release = single_release, | |
d50a6b56 | 1716 | }; |
1da177e4 | 1717 | |
d50a6b56 SH |
1718 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1719 | { | |
222f1806 | 1720 | struct pktgen_thread *t = seq->private; |
648fda74 | 1721 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1722 | |
1723 | BUG_ON(!t); | |
1da177e4 | 1724 | |
97dc48e2 | 1725 | seq_puts(seq, "Running: "); |
1da177e4 | 1726 | |
8788370a JDB |
1727 | rcu_read_lock(); |
1728 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
222f1806 | 1729 | if (pkt_dev->running) |
593f63b0 | 1730 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1731 | |
97dc48e2 | 1732 | seq_puts(seq, "\nStopped: "); |
222f1806 | 1733 | |
8788370a | 1734 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) |
222f1806 | 1735 | if (!pkt_dev->running) |
593f63b0 | 1736 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1737 | |
1738 | if (t->result[0]) | |
d50a6b56 | 1739 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1740 | else |
97dc48e2 | 1741 | seq_puts(seq, "\nResult: NA\n"); |
1da177e4 | 1742 | |
8788370a | 1743 | rcu_read_unlock(); |
1da177e4 | 1744 | |
d50a6b56 | 1745 | return 0; |
1da177e4 LT |
1746 | } |
1747 | ||
d50a6b56 | 1748 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1749 | const char __user * user_buffer, |
1750 | size_t count, loff_t * offset) | |
1da177e4 | 1751 | { |
8a994a71 | 1752 | struct seq_file *seq = file->private_data; |
222f1806 | 1753 | struct pktgen_thread *t = seq->private; |
d6182223 | 1754 | int i, max, len, ret; |
1da177e4 | 1755 | char name[40]; |
222f1806 | 1756 | char *pg_result; |
d50a6b56 | 1757 | |
1da177e4 | 1758 | if (count < 1) { |
222f1806 | 1759 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1760 | return -EINVAL; |
1761 | } | |
d50a6b56 | 1762 | |
d6182223 PG |
1763 | max = count; |
1764 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1765 | if (len < 0) |
d50a6b56 SH |
1766 | return len; |
1767 | ||
d6182223 | 1768 | i = len; |
d50a6b56 | 1769 | |
1da177e4 LT |
1770 | /* Read variable name */ |
1771 | ||
1772 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1773 | if (len < 0) |
d50a6b56 | 1774 | return len; |
222f1806 | 1775 | |
1da177e4 LT |
1776 | memset(name, 0, sizeof(name)); |
1777 | if (copy_from_user(name, &user_buffer[i], len)) | |
1778 | return -EFAULT; | |
1779 | i += len; | |
d50a6b56 | 1780 | |
222f1806 | 1781 | max = count - i; |
1da177e4 | 1782 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1783 | if (len < 0) |
d50a6b56 SH |
1784 | return len; |
1785 | ||
1da177e4 LT |
1786 | i += len; |
1787 | ||
d50a6b56 | 1788 | if (debug) |
f342cda7 | 1789 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1790 | |
222f1806 | 1791 | if (!t) { |
f9467eae | 1792 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1793 | ret = -EINVAL; |
1794 | goto out; | |
1795 | } | |
1796 | ||
1797 | pg_result = &(t->result[0]); | |
1798 | ||
222f1806 LC |
1799 | if (!strcmp(name, "add_device")) { |
1800 | char f[32]; | |
1801 | memset(f, 0, 32); | |
1da177e4 | 1802 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1803 | if (len < 0) { |
1804 | ret = len; | |
1da177e4 LT |
1805 | goto out; |
1806 | } | |
222f1806 | 1807 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1808 | return -EFAULT; |
1809 | i += len; | |
6146e6a4 | 1810 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1811 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1812 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1813 | if (!ret) { |
1814 | ret = count; | |
1815 | sprintf(pg_result, "OK: add_device=%s", f); | |
1816 | } else | |
1817 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1818 | goto out; |
1819 | } | |
1820 | ||
222f1806 | 1821 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1822 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1823 | t->control |= T_REMDEVALL; |
6146e6a4 | 1824 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1825 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1826 | ret = count; |
222f1806 | 1827 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1828 | goto out; |
1829 | } | |
1830 | ||
222f1806 | 1831 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1832 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1833 | ret = count; |
1da177e4 LT |
1834 | goto out; |
1835 | } | |
1836 | ||
1837 | ret = -EINVAL; | |
222f1806 | 1838 | out: |
1da177e4 LT |
1839 | return ret; |
1840 | } | |
1841 | ||
d50a6b56 | 1842 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1843 | { |
d9dda78b | 1844 | return single_open(file, pktgen_thread_show, PDE_DATA(inode)); |
1da177e4 LT |
1845 | } |
1846 | ||
9a32144e | 1847 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1848 | .open = pktgen_thread_open, |
1849 | .read = seq_read, | |
1850 | .llseek = seq_lseek, | |
1851 | .write = pktgen_thread_write, | |
1852 | .release = single_release, | |
d50a6b56 | 1853 | }; |
1da177e4 LT |
1854 | |
1855 | /* Think find or remove for NN */ | |
4e58a027 CW |
1856 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1857 | const char *ifname, int remove) | |
1da177e4 LT |
1858 | { |
1859 | struct pktgen_thread *t; | |
1860 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1861 | bool exact = (remove == FIND); |
1da177e4 | 1862 | |
4e58a027 | 1863 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1864 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1865 | if (pkt_dev) { |
222f1806 | 1866 | if (remove) { |
222f1806 LC |
1867 | pkt_dev->removal_mark = 1; |
1868 | t->control |= T_REMDEV; | |
222f1806 | 1869 | } |
1da177e4 LT |
1870 | break; |
1871 | } | |
1da177e4 | 1872 | } |
222f1806 | 1873 | return pkt_dev; |
1da177e4 LT |
1874 | } |
1875 | ||
95ed63f7 AK |
1876 | /* |
1877 | * mark a device for removal | |
1878 | */ | |
4e58a027 | 1879 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1880 | { |
1881 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1882 | const int max_tries = 10, msec_per_try = 125; |
1883 | int i = 0; | |
95ed63f7 | 1884 | |
6146e6a4 | 1885 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1886 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1887 | |
222f1806 | 1888 | while (1) { |
95ed63f7 | 1889 | |
4e58a027 | 1890 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1891 | if (pkt_dev == NULL) |
1892 | break; /* success */ | |
95ed63f7 | 1893 | |
6146e6a4 | 1894 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1895 | pr_debug("%s: waiting for %s to disappear....\n", |
1896 | __func__, ifname); | |
95ed63f7 | 1897 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1898 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1899 | |
1900 | if (++i >= max_tries) { | |
f9467eae JP |
1901 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1902 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1903 | break; |
1904 | } | |
1905 | ||
1906 | } | |
1907 | ||
6146e6a4 | 1908 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1909 | } |
95ed63f7 | 1910 | |
4e58a027 | 1911 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
1912 | { |
1913 | struct pktgen_thread *t; | |
1914 | ||
9a0b1e8b ED |
1915 | mutex_lock(&pktgen_thread_lock); |
1916 | ||
4e58a027 | 1917 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
1918 | struct pktgen_dev *pkt_dev; |
1919 | ||
9a0b1e8b ED |
1920 | if_lock(t); |
1921 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
39df232f SH |
1922 | if (pkt_dev->odev != dev) |
1923 | continue; | |
1924 | ||
a8ca16ea | 1925 | proc_remove(pkt_dev->entry); |
39df232f | 1926 | |
2975315b | 1927 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 1928 | pn->proc_dir, |
2975315b AD |
1929 | &pktgen_if_fops, |
1930 | pkt_dev); | |
39df232f | 1931 | if (!pkt_dev->entry) |
f9467eae JP |
1932 | pr_err("can't move proc entry for '%s'\n", |
1933 | dev->name); | |
39df232f SH |
1934 | break; |
1935 | } | |
9a0b1e8b | 1936 | if_unlock(t); |
39df232f | 1937 | } |
9a0b1e8b | 1938 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
1939 | } |
1940 | ||
222f1806 LC |
1941 | static int pktgen_device_event(struct notifier_block *unused, |
1942 | unsigned long event, void *ptr) | |
1da177e4 | 1943 | { |
351638e7 | 1944 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
4e58a027 | 1945 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 1946 | |
4e58a027 | 1947 | if (pn->pktgen_exiting) |
e9dc8653 EB |
1948 | return NOTIFY_DONE; |
1949 | ||
1da177e4 LT |
1950 | /* It is OK that we do not hold the group lock right now, |
1951 | * as we run under the RTNL lock. | |
1952 | */ | |
1953 | ||
1954 | switch (event) { | |
39df232f | 1955 | case NETDEV_CHANGENAME: |
4e58a027 | 1956 | pktgen_change_name(pn, dev); |
1da177e4 | 1957 | break; |
222f1806 | 1958 | |
1da177e4 | 1959 | case NETDEV_UNREGISTER: |
4e58a027 | 1960 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 1961 | break; |
3ff50b79 | 1962 | } |
1da177e4 LT |
1963 | |
1964 | return NOTIFY_DONE; | |
1965 | } | |
1966 | ||
4e58a027 CW |
1967 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
1968 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 1969 | const char *ifname) |
e6fce5b9 RO |
1970 | { |
1971 | char b[IFNAMSIZ+5]; | |
d6182223 | 1972 | int i; |
e6fce5b9 | 1973 | |
63adc6fb SH |
1974 | for (i = 0; ifname[i] != '@'; i++) { |
1975 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1976 | break; |
1977 | ||
1978 | b[i] = ifname[i]; | |
1979 | } | |
1980 | b[i] = 0; | |
1981 | ||
4e58a027 | 1982 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
1983 | } |
1984 | ||
1985 | ||
1da177e4 LT |
1986 | /* Associate pktgen_dev with a device. */ |
1987 | ||
4e58a027 CW |
1988 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
1989 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 1990 | { |
1da177e4 | 1991 | struct net_device *odev; |
39df232f | 1992 | int err; |
1da177e4 LT |
1993 | |
1994 | /* Clean old setups */ | |
1da177e4 LT |
1995 | if (pkt_dev->odev) { |
1996 | dev_put(pkt_dev->odev); | |
222f1806 LC |
1997 | pkt_dev->odev = NULL; |
1998 | } | |
1da177e4 | 1999 | |
4e58a027 | 2000 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 2001 | if (!odev) { |
f9467eae | 2002 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2003 | return -ENODEV; |
1da177e4 | 2004 | } |
39df232f | 2005 | |
1da177e4 | 2006 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2007 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2008 | err = -EINVAL; |
2009 | } else if (!netif_running(odev)) { | |
f9467eae | 2010 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2011 | err = -ENETDOWN; |
2012 | } else { | |
2013 | pkt_dev->odev = odev; | |
2014 | return 0; | |
1da177e4 | 2015 | } |
1da177e4 | 2016 | |
1da177e4 | 2017 | dev_put(odev); |
39df232f | 2018 | return err; |
1da177e4 LT |
2019 | } |
2020 | ||
2021 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2022 | * structure to have the right information to create/send packets | |
2023 | */ | |
2024 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2025 | { | |
64c00d81 AG |
2026 | int ntxq; |
2027 | ||
222f1806 | 2028 | if (!pkt_dev->odev) { |
f9467eae | 2029 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2030 | sprintf(pkt_dev->result, |
2031 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2032 | return; | |
2033 | } | |
2034 | ||
64c00d81 AG |
2035 | /* make sure that we don't pick a non-existing transmit queue */ |
2036 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2037 | |
64c00d81 | 2038 | if (ntxq <= pkt_dev->queue_map_min) { |
294a0b7f JP |
2039 | pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2040 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2041 | pkt_dev->odevname); | |
26e29eed | 2042 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2043 | } |
88271660 | 2044 | if (pkt_dev->queue_map_max >= ntxq) { |
294a0b7f JP |
2045 | pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2046 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2047 | pkt_dev->odevname); | |
26e29eed | 2048 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2049 | } |
2050 | ||
222f1806 | 2051 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2052 | |
f404e9a6 | 2053 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
9ea08b12 | 2054 | ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); |
1da177e4 | 2055 | |
222f1806 | 2056 | /* Set up Dest MAC */ |
9ea08b12 | 2057 | ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); |
1da177e4 | 2058 | |
222f1806 | 2059 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2060 | int i, set = 0, err = 1; |
2061 | struct inet6_dev *idev; | |
2062 | ||
68bf9f0b AW |
2063 | if (pkt_dev->min_pkt_size == 0) { |
2064 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2065 | + sizeof(struct udphdr) | |
2066 | + sizeof(struct pktgen_hdr) | |
2067 | + pkt_dev->pkt_overhead; | |
2068 | } | |
2069 | ||
df7e8e2e | 2070 | for (i = 0; i < sizeof(struct in6_addr); i++) |
222f1806 | 2071 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { |
1da177e4 LT |
2072 | set = 1; |
2073 | break; | |
2074 | } | |
2075 | ||
222f1806 LC |
2076 | if (!set) { |
2077 | ||
1da177e4 LT |
2078 | /* |
2079 | * Use linklevel address if unconfigured. | |
2080 | * | |
2081 | * use ipv6_get_lladdr if/when it's get exported | |
2082 | */ | |
2083 | ||
8814c4b5 | 2084 | rcu_read_lock(); |
63adc6fb SH |
2085 | idev = __in6_dev_get(pkt_dev->odev); |
2086 | if (idev) { | |
1da177e4 LT |
2087 | struct inet6_ifaddr *ifp; |
2088 | ||
2089 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2090 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2091 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2092 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2093 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2094 | err = 0; |
2095 | break; | |
2096 | } | |
2097 | } | |
2098 | read_unlock_bh(&idev->lock); | |
2099 | } | |
8814c4b5 | 2100 | rcu_read_unlock(); |
222f1806 | 2101 | if (err) |
f9467eae | 2102 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2103 | } |
222f1806 | 2104 | } else { |
68bf9f0b AW |
2105 | if (pkt_dev->min_pkt_size == 0) { |
2106 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2107 | + sizeof(struct udphdr) | |
2108 | + sizeof(struct pktgen_hdr) | |
2109 | + pkt_dev->pkt_overhead; | |
2110 | } | |
2111 | ||
1da177e4 LT |
2112 | pkt_dev->saddr_min = 0; |
2113 | pkt_dev->saddr_max = 0; | |
2114 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2115 | |
2116 | struct in_device *in_dev; | |
1da177e4 LT |
2117 | |
2118 | rcu_read_lock(); | |
e5ed6399 | 2119 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 | 2120 | if (in_dev) { |
2638eb8b FW |
2121 | const struct in_ifaddr *ifa; |
2122 | ||
2123 | ifa = rcu_dereference(in_dev->ifa_list); | |
2124 | if (ifa) { | |
2125 | pkt_dev->saddr_min = ifa->ifa_address; | |
1da177e4 LT |
2126 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2127 | } | |
1da177e4 LT |
2128 | } |
2129 | rcu_read_unlock(); | |
222f1806 | 2130 | } else { |
1da177e4 LT |
2131 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2132 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2133 | } | |
2134 | ||
2135 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2136 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2137 | } | |
222f1806 | 2138 | /* Initialize current values. */ |
68bf9f0b AW |
2139 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2140 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2141 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2142 | ||
222f1806 LC |
2143 | pkt_dev->cur_dst_mac_offset = 0; |
2144 | pkt_dev->cur_src_mac_offset = 0; | |
2145 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2146 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2147 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2148 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2149 | pkt_dev->nflows = 0; |
2150 | } | |
2151 | ||
fd29cf72 SH |
2152 | |
2153 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2154 | { | |
ef87979c | 2155 | ktime_t start_time, end_time; |
417bc4b8 | 2156 | s64 remaining; |
2bc481cf SH |
2157 | struct hrtimer_sleeper t; |
2158 | ||
dbc1625f | 2159 | hrtimer_init_sleeper_on_stack(&t, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); |
2bc481cf SH |
2160 | hrtimer_set_expires(&t.timer, spin_until); |
2161 | ||
43d28b65 | 2162 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
bcf91bdb GR |
2163 | if (remaining <= 0) |
2164 | goto out; | |
2bc481cf | 2165 | |
398f382c | 2166 | start_time = ktime_get(); |
33136d12 ED |
2167 | if (remaining < 100000) { |
2168 | /* for small delays (<100us), just loop until limit is reached */ | |
2169 | do { | |
398f382c DB |
2170 | end_time = ktime_get(); |
2171 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2172 | } else { |
2bc481cf SH |
2173 | do { |
2174 | set_current_state(TASK_INTERRUPTIBLE); | |
9dd8813e | 2175 | hrtimer_sleeper_start_expires(&t, HRTIMER_MODE_ABS); |
2bc481cf SH |
2176 | |
2177 | if (likely(t.task)) | |
1da177e4 | 2178 | schedule(); |
1da177e4 | 2179 | |
2bc481cf SH |
2180 | hrtimer_cancel(&t.timer); |
2181 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2182 | __set_current_state(TASK_RUNNING); | |
398f382c | 2183 | end_time = ktime_get(); |
1da177e4 | 2184 | } |
ef87979c SH |
2185 | |
2186 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
bcf91bdb | 2187 | out: |
07a0f0f0 | 2188 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
bcf91bdb | 2189 | destroy_hrtimer_on_stack(&t.timer); |
1da177e4 LT |
2190 | } |
2191 | ||
16dab72f JHS |
2192 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2193 | { | |
63d75463 | 2194 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2195 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2196 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2197 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2198 | } | |
2199 | ||
648fda74 | 2200 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2201 | { |
648fda74 | 2202 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2203 | } |
2204 | ||
2205 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2206 | { | |
2207 | int flow = pkt_dev->curfl; | |
2208 | ||
2209 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2210 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2211 | /* reset time */ | |
2212 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2213 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2214 | pkt_dev->curfl += 1; |
2215 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2216 | pkt_dev->curfl = 0; /*reset */ | |
2217 | } | |
2218 | } else { | |
33d7c5e5 | 2219 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2220 | pkt_dev->curfl = flow; |
007a531b | 2221 | |
1211a645 | 2222 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2223 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2224 | pkt_dev->flows[flow].flags = 0; |
2225 | } | |
007a531b JHS |
2226 | } |
2227 | ||
2228 | return pkt_dev->curfl; | |
2229 | } | |
2230 | ||
a553e4a6 JHS |
2231 | |
2232 | #ifdef CONFIG_XFRM | |
2233 | /* If there was already an IPSEC SA, we keep it as is, else | |
2234 | * we go look for it ... | |
2235 | */ | |
bd55775c | 2236 | #define DUMMY_MARK 0 |
fea1ab0f | 2237 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2238 | { |
2239 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2240 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 | 2241 | if (!x) { |
c454997e FD |
2242 | |
2243 | if (pkt_dev->spi) { | |
2244 | /* We need as quick as possible to find the right SA | |
2245 | * Searching with minimum criteria to archieve this. | |
2246 | */ | |
2247 | x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); | |
2248 | } else { | |
2249 | /* slow path: we dont already have xfrm_state */ | |
7e652640 | 2250 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, 0, |
c454997e FD |
2251 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
2252 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2253 | AF_INET, | |
2254 | pkt_dev->ipsmode, | |
2255 | pkt_dev->ipsproto, 0); | |
2256 | } | |
a553e4a6 JHS |
2257 | if (x) { |
2258 | pkt_dev->flows[flow].x = x; | |
2259 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2260 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2261 | } |
2262 | ||
2263 | } | |
2264 | } | |
2265 | #endif | |
fd2ea0a7 DM |
2266 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2267 | { | |
e6fce5b9 RO |
2268 | |
2269 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2270 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2271 | ||
896a7cf8 | 2272 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2273 | __u16 t; |
2274 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2275 | t = prandom_u32() % |
fd2ea0a7 DM |
2276 | (pkt_dev->queue_map_max - |
2277 | pkt_dev->queue_map_min + 1) | |
2278 | + pkt_dev->queue_map_min; | |
2279 | } else { | |
2280 | t = pkt_dev->cur_queue_map + 1; | |
2281 | if (t > pkt_dev->queue_map_max) | |
2282 | t = pkt_dev->queue_map_min; | |
2283 | } | |
2284 | pkt_dev->cur_queue_map = t; | |
2285 | } | |
bfdbc0ac | 2286 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2287 | } |
2288 | ||
1da177e4 LT |
2289 | /* Increment/randomize headers according to flags and current values |
2290 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2291 | */ | |
222f1806 LC |
2292 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2293 | { | |
2294 | __u32 imn; | |
2295 | __u32 imx; | |
2296 | int flow = 0; | |
1da177e4 | 2297 | |
007a531b JHS |
2298 | if (pkt_dev->cflows) |
2299 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2300 | |
2301 | /* Deal with source MAC */ | |
222f1806 LC |
2302 | if (pkt_dev->src_mac_count > 1) { |
2303 | __u32 mc; | |
2304 | __u32 tmp; | |
2305 | ||
2306 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2307 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2308 | else { |
2309 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2310 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2311 | pkt_dev->src_mac_count) |
2312 | pkt_dev->cur_src_mac_offset = 0; | |
2313 | } | |
2314 | ||
2315 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2316 | pkt_dev->hh[11] = tmp; | |
2317 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2318 | pkt_dev->hh[10] = tmp; | |
2319 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2320 | pkt_dev->hh[9] = tmp; | |
2321 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2322 | pkt_dev->hh[8] = tmp; | |
2323 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2324 | pkt_dev->hh[7] = tmp; | |
2325 | } | |
2326 | ||
2327 | /* Deal with Destination MAC */ | |
2328 | if (pkt_dev->dst_mac_count > 1) { | |
2329 | __u32 mc; | |
2330 | __u32 tmp; | |
2331 | ||
2332 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2333 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2334 | |
2335 | else { | |
2336 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2337 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2338 | pkt_dev->dst_mac_count) { |
2339 | pkt_dev->cur_dst_mac_offset = 0; | |
2340 | } | |
2341 | } | |
2342 | ||
2343 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2344 | pkt_dev->hh[5] = tmp; | |
2345 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2346 | pkt_dev->hh[4] = tmp; | |
2347 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2348 | pkt_dev->hh[3] = tmp; | |
2349 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2350 | pkt_dev->hh[2] = tmp; | |
2351 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2352 | pkt_dev->hh[1] = tmp; | |
2353 | } | |
2354 | ||
ca6549af | 2355 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2356 | unsigned int i; |
e71a4783 | 2357 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2358 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2359 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2360 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2361 | htonl(0x000fffff)); |
2362 | } | |
2363 | ||
34954ddc | 2364 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2365 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2366 | } |
2367 | ||
2368 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2369 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2370 | } |
2371 | ||
222f1806 LC |
2372 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2373 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2374 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2375 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2376 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2377 | |
2378 | else { | |
1da177e4 LT |
2379 | pkt_dev->cur_udp_src++; |
2380 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2381 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2382 | } |
2383 | } | |
2384 | ||
2385 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2386 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2387 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2388 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2389 | + pkt_dev->udp_dst_min; | |
222f1806 | 2390 | } else { |
1da177e4 | 2391 | pkt_dev->cur_udp_dst++; |
222f1806 | 2392 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2393 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2394 | } |
2395 | } | |
1da177e4 LT |
2396 | |
2397 | if (!(pkt_dev->flags & F_IPV6)) { | |
2398 | ||
63adc6fb SH |
2399 | imn = ntohl(pkt_dev->saddr_min); |
2400 | imx = ntohl(pkt_dev->saddr_max); | |
2401 | if (imn < imx) { | |
1da177e4 | 2402 | __u32 t; |
222f1806 | 2403 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2404 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2405 | else { |
2406 | t = ntohl(pkt_dev->cur_saddr); | |
2407 | t++; | |
63adc6fb | 2408 | if (t > imx) |
1da177e4 | 2409 | t = imn; |
63adc6fb | 2410 | |
1da177e4 LT |
2411 | } |
2412 | pkt_dev->cur_saddr = htonl(t); | |
2413 | } | |
222f1806 | 2414 | |
007a531b | 2415 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2416 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2417 | } else { | |
252e3346 AV |
2418 | imn = ntohl(pkt_dev->daddr_min); |
2419 | imx = ntohl(pkt_dev->daddr_max); | |
2420 | if (imn < imx) { | |
1da177e4 | 2421 | __u32 t; |
252e3346 | 2422 | __be32 s; |
1da177e4 LT |
2423 | if (pkt_dev->flags & F_IPDST_RND) { |
2424 | ||
70e3ba72 | 2425 | do { |
33d7c5e5 AM |
2426 | t = prandom_u32() % |
2427 | (imx - imn) + imn; | |
252e3346 | 2428 | s = htonl(t); |
70e3ba72 AM |
2429 | } while (ipv4_is_loopback(s) || |
2430 | ipv4_is_multicast(s) || | |
2431 | ipv4_is_lbcast(s) || | |
2432 | ipv4_is_zeronet(s) || | |
2433 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2434 | pkt_dev->cur_daddr = s; |
2435 | } else { | |
1da177e4 LT |
2436 | t = ntohl(pkt_dev->cur_daddr); |
2437 | t++; | |
2438 | if (t > imx) { | |
2439 | t = imn; | |
2440 | } | |
2441 | pkt_dev->cur_daddr = htonl(t); | |
2442 | } | |
2443 | } | |
222f1806 | 2444 | if (pkt_dev->cflows) { |
007a531b | 2445 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2446 | pkt_dev->flows[flow].cur_daddr = |
2447 | pkt_dev->cur_daddr; | |
a553e4a6 | 2448 | #ifdef CONFIG_XFRM |
6f107c74 | 2449 | if (pkt_dev->flags & F_IPSEC) |
a553e4a6 JHS |
2450 | get_ipsec_sa(pkt_dev, flow); |
2451 | #endif | |
1da177e4 LT |
2452 | pkt_dev->nflows++; |
2453 | } | |
2454 | } | |
222f1806 LC |
2455 | } else { /* IPV6 * */ |
2456 | ||
06e30411 | 2457 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2458 | int i; |
2459 | ||
2460 | /* Only random destinations yet */ | |
2461 | ||
222f1806 | 2462 | for (i = 0; i < 4; i++) { |
1da177e4 | 2463 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2464 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2465 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2466 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2467 | } |
222f1806 | 2468 | } |
1da177e4 LT |
2469 | } |
2470 | ||
222f1806 LC |
2471 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2472 | __u32 t; | |
2473 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2474 | t = prandom_u32() % |
5fa6fc76 SH |
2475 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2476 | + pkt_dev->min_pkt_size; | |
222f1806 | 2477 | } else { |
1da177e4 | 2478 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2479 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2480 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2481 | } |
2482 | pkt_dev->cur_pkt_size = t; | |
2483 | } | |
1da177e4 | 2484 | |
fd2ea0a7 | 2485 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2486 | |
1da177e4 LT |
2487 | pkt_dev->flows[flow].count++; |
2488 | } | |
2489 | ||
a553e4a6 JHS |
2490 | |
2491 | #ifdef CONFIG_XFRM | |
5537a055 | 2492 | static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { |
cf93d47e FD |
2493 | |
2494 | [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ | |
2495 | }; | |
2496 | ||
a553e4a6 JHS |
2497 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) |
2498 | { | |
2499 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2500 | int err = 0; | |
6de9ace4 | 2501 | struct net *net = dev_net(pkt_dev->odev); |
a553e4a6 JHS |
2502 | |
2503 | if (!x) | |
2504 | return 0; | |
2505 | /* XXX: we dont support tunnel mode for now until | |
2506 | * we resolve the dst issue */ | |
cf93d47e | 2507 | if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) |
a553e4a6 JHS |
2508 | return 0; |
2509 | ||
cf93d47e FD |
2510 | /* But when user specify an valid SPI, transformation |
2511 | * supports both transport/tunnel mode + ESP/AH type. | |
2512 | */ | |
2513 | if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) | |
b6ca8bd5 | 2514 | skb->_skb_refdst = (unsigned long)&pkt_dev->xdst.u.dst | SKB_DST_NOREF; |
cf93d47e FD |
2515 | |
2516 | rcu_read_lock_bh(); | |
0c620e97 | 2517 | err = pktgen_xfrm_outer_mode_output(x, skb); |
cf93d47e | 2518 | rcu_read_unlock_bh(); |
6de9ace4 FD |
2519 | if (err) { |
2520 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); | |
a553e4a6 | 2521 | goto error; |
6de9ace4 | 2522 | } |
a553e4a6 | 2523 | err = x->type->output(x, skb); |
6de9ace4 FD |
2524 | if (err) { |
2525 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); | |
a553e4a6 | 2526 | goto error; |
6de9ace4 | 2527 | } |
0af0a413 | 2528 | spin_lock_bh(&x->lock); |
63adc6fb | 2529 | x->curlft.bytes += skb->len; |
a553e4a6 | 2530 | x->curlft.packets++; |
0af0a413 | 2531 | spin_unlock_bh(&x->lock); |
a553e4a6 | 2532 | error: |
a553e4a6 JHS |
2533 | return err; |
2534 | } | |
2535 | ||
475ac1e4 | 2536 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2537 | { |
2538 | if (pkt_dev->cflows) { | |
2539 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2540 | int i; |
2541 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2542 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2543 | if (x) { | |
2544 | xfrm_state_put(x); | |
2545 | pkt_dev->flows[i].x = NULL; | |
2546 | } | |
2547 | } | |
2548 | } | |
2549 | } | |
2550 | ||
475ac1e4 | 2551 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2552 | struct sk_buff *skb, __be16 protocol) |
2553 | { | |
6f107c74 | 2554 | if (pkt_dev->flags & F_IPSEC) { |
a553e4a6 JHS |
2555 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; |
2556 | int nhead = 0; | |
2557 | if (x) { | |
d4969581 | 2558 | struct ethhdr *eth; |
3868204d | 2559 | struct iphdr *iph; |
d4969581 | 2560 | int ret; |
3868204d | 2561 | |
a553e4a6 | 2562 | nhead = x->props.header_len - skb_headroom(skb); |
63adc6fb | 2563 | if (nhead > 0) { |
a553e4a6 JHS |
2564 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2565 | if (ret < 0) { | |
f9467eae JP |
2566 | pr_err("Error expanding ipsec packet %d\n", |
2567 | ret); | |
b4bb4ac8 | 2568 | goto err; |
a553e4a6 JHS |
2569 | } |
2570 | } | |
2571 | ||
2572 | /* ipsec is not expecting ll header */ | |
2573 | skb_pull(skb, ETH_HLEN); | |
2574 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2575 | if (ret) { | |
f9467eae | 2576 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2577 | goto err; |
a553e4a6 JHS |
2578 | } |
2579 | /* restore ll */ | |
d58ff351 | 2580 | eth = skb_push(skb, ETH_HLEN); |
d4969581 ED |
2581 | memcpy(eth, pkt_dev->hh, 2 * ETH_ALEN); |
2582 | eth->h_proto = protocol; | |
3868204d | 2583 | |
2584 | /* Update IPv4 header len as well as checksum value */ | |
2585 | iph = ip_hdr(skb); | |
2586 | iph->tot_len = htons(skb->len - ETH_HLEN); | |
2587 | ip_send_check(iph); | |
a553e4a6 JHS |
2588 | } |
2589 | } | |
2590 | return 1; | |
b4bb4ac8 IJ |
2591 | err: |
2592 | kfree_skb(skb); | |
2593 | return 0; | |
a553e4a6 JHS |
2594 | } |
2595 | #endif | |
2596 | ||
ca6549af SW |
2597 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2598 | { | |
95c96174 | 2599 | unsigned int i; |
63adc6fb | 2600 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2601 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2602 | |
ca6549af SW |
2603 | mpls--; |
2604 | *mpls |= MPLS_STACK_BOTTOM; | |
2605 | } | |
2606 | ||
0f37c605 AV |
2607 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2608 | unsigned int prio) | |
2609 | { | |
2610 | return htons(id | (cfi << 12) | (prio << 13)); | |
2611 | } | |
2612 | ||
26ad7879 ED |
2613 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2614 | int datalen) | |
2615 | { | |
7f5d3f27 | 2616 | struct timespec64 timestamp; |
26ad7879 ED |
2617 | struct pktgen_hdr *pgh; |
2618 | ||
4df864c1 | 2619 | pgh = skb_put(skb, sizeof(*pgh)); |
26ad7879 ED |
2620 | datalen -= sizeof(*pgh); |
2621 | ||
2622 | if (pkt_dev->nfrags <= 0) { | |
b080db58 | 2623 | skb_put_zero(skb, datalen); |
26ad7879 ED |
2624 | } else { |
2625 | int frags = pkt_dev->nfrags; | |
2626 | int i, len; | |
7d36a991 | 2627 | int frag_len; |
26ad7879 ED |
2628 | |
2629 | ||
2630 | if (frags > MAX_SKB_FRAGS) | |
2631 | frags = MAX_SKB_FRAGS; | |
2632 | len = datalen - frags * PAGE_SIZE; | |
2633 | if (len > 0) { | |
b080db58 | 2634 | skb_put_zero(skb, len); |
26ad7879 ED |
2635 | datalen = frags * PAGE_SIZE; |
2636 | } | |
2637 | ||
2638 | i = 0; | |
7d36a991 | 2639 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2640 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2641 | while (datalen > 0) { |
2642 | if (unlikely(!pkt_dev->page)) { | |
2643 | int node = numa_node_id(); | |
2644 | ||
2645 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2646 | node = pkt_dev->node; | |
2647 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2648 | if (!pkt_dev->page) | |
2649 | break; | |
2650 | } | |
a0bec1cd | 2651 | get_page(pkt_dev->page); |
ea2ab693 | 2652 | skb_frag_set_page(skb, i, pkt_dev->page); |
b54c9d5b | 2653 | skb_frag_off_set(&skb_shinfo(skb)->frags[i], 0); |
7d36a991 | 2654 | /*last fragment, fill rest of data*/ |
2655 | if (i == (frags - 1)) | |
9e903e08 ED |
2656 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2657 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2658 | else |
9e903e08 ED |
2659 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2660 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2661 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2662 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2663 | i++; |
2664 | skb_shinfo(skb)->nr_frags = i; | |
2665 | } | |
26ad7879 ED |
2666 | } |
2667 | ||
2668 | /* Stamp the time, and sequence number, | |
2669 | * convert them to network byte order | |
2670 | */ | |
2671 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2672 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2673 | ||
afb84b62 JDB |
2674 | if (pkt_dev->flags & F_NO_TIMESTAMP) { |
2675 | pgh->tv_sec = 0; | |
2676 | pgh->tv_usec = 0; | |
2677 | } else { | |
7f5d3f27 AB |
2678 | /* |
2679 | * pgh->tv_sec wraps in y2106 when interpreted as unsigned | |
2680 | * as done by wireshark, or y2038 when interpreted as signed. | |
2681 | * This is probably harmless, but if anyone wants to improve | |
2682 | * it, we could introduce a variant that puts 64-bit nanoseconds | |
2683 | * into the respective header bytes. | |
2684 | * This would also be slightly faster to read. | |
2685 | */ | |
2686 | ktime_get_real_ts64(×tamp); | |
afb84b62 | 2687 | pgh->tv_sec = htonl(timestamp.tv_sec); |
7f5d3f27 | 2688 | pgh->tv_usec = htonl(timestamp.tv_nsec / NSEC_PER_USEC); |
afb84b62 | 2689 | } |
26ad7879 ED |
2690 | } |
2691 | ||
7a6e288d | 2692 | static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, |
63d75463 | 2693 | struct pktgen_dev *pkt_dev) |
7a6e288d | 2694 | { |
63d75463 | 2695 | unsigned int extralen = LL_RESERVED_SPACE(dev); |
7a6e288d | 2696 | struct sk_buff *skb = NULL; |
63d75463 | 2697 | unsigned int size; |
7a6e288d | 2698 | |
63d75463 | 2699 | size = pkt_dev->cur_pkt_size + 64 + extralen + pkt_dev->pkt_overhead; |
7a6e288d DB |
2700 | if (pkt_dev->flags & F_NODE) { |
2701 | int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); | |
2702 | ||
2703 | skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); | |
2704 | if (likely(skb)) { | |
2705 | skb_reserve(skb, NET_SKB_PAD); | |
2706 | skb->dev = dev; | |
2707 | } | |
2708 | } else { | |
2709 | skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); | |
2710 | } | |
3de03596 | 2711 | |
63d75463 | 2712 | /* the caller pre-fetches from skb->data and reserves for the mac hdr */ |
3de03596 | 2713 | if (likely(skb)) |
63d75463 | 2714 | skb_reserve(skb, extralen - 16); |
7a6e288d DB |
2715 | |
2716 | return skb; | |
2717 | } | |
2718 | ||
222f1806 LC |
2719 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2720 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2721 | { |
2722 | struct sk_buff *skb = NULL; | |
2723 | __u8 *eth; | |
2724 | struct udphdr *udph; | |
2725 | int datalen, iplen; | |
2726 | struct iphdr *iph; | |
d5f1ce9a | 2727 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2728 | __be32 *mpls; |
34954ddc FF |
2729 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2730 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2731 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2732 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2733 | u16 queue_map; |
ca6549af SW |
2734 | |
2735 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2736 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2737 | |
34954ddc | 2738 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2739 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2740 | |
64053bee RO |
2741 | /* Update any of the values, used when we're incrementing various |
2742 | * fields. | |
2743 | */ | |
2744 | mod_cur_headers(pkt_dev); | |
eb589063 | 2745 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2746 | |
63d75463 | 2747 | skb = pktgen_alloc_skb(odev, pkt_dev); |
1da177e4 LT |
2748 | if (!skb) { |
2749 | sprintf(pkt_dev->result, "No memory"); | |
2750 | return NULL; | |
2751 | } | |
2752 | ||
7a6e288d | 2753 | prefetchw(skb->data); |
63d75463 | 2754 | skb_reserve(skb, 16); |
1da177e4 LT |
2755 | |
2756 | /* Reserve for ethernet and IP header */ | |
d58ff351 | 2757 | eth = skb_push(skb, 14); |
4df864c1 | 2758 | mpls = skb_put(skb, pkt_dev->nr_labels * sizeof(__u32)); |
ca6549af SW |
2759 | if (pkt_dev->nr_labels) |
2760 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2761 | |
2762 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2763 | if (pkt_dev->svlan_id != 0xffff) { |
4df864c1 | 2764 | svlan_tci = skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2765 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2766 | pkt_dev->svlan_cfi, | |
2767 | pkt_dev->svlan_p); | |
4df864c1 JB |
2768 | svlan_encapsulated_proto = skb_put(skb, |
2769 | sizeof(__be16)); | |
d5f1ce9a | 2770 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc | 2771 | } |
4df864c1 | 2772 | vlan_tci = skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2773 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2774 | pkt_dev->vlan_cfi, | |
2775 | pkt_dev->vlan_p); | |
4df864c1 | 2776 | vlan_encapsulated_proto = skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2777 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2778 | } |
2779 | ||
c145aeb3 | 2780 | skb_reset_mac_header(skb); |
525cebed | 2781 | skb_set_network_header(skb, skb->len); |
4df864c1 | 2782 | iph = skb_put(skb, sizeof(struct iphdr)); |
525cebed TG |
2783 | |
2784 | skb_set_transport_header(skb, skb->len); | |
4df864c1 | 2785 | udph = skb_put(skb, sizeof(struct udphdr)); |
fd2ea0a7 | 2786 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2787 | skb->priority = pkt_dev->skb_priority; |
2788 | ||
1da177e4 | 2789 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2790 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2791 | |
ca6549af SW |
2792 | /* Eth + IPh + UDPh + mpls */ |
2793 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2794 | pkt_dev->pkt_overhead; |
6af773e7 | 2795 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2796 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2797 | |
1da177e4 LT |
2798 | udph->source = htons(pkt_dev->cur_udp_src); |
2799 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 | 2800 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
c26bf4a5 | 2801 | udph->check = 0; |
1da177e4 LT |
2802 | |
2803 | iph->ihl = 5; | |
2804 | iph->version = 4; | |
2805 | iph->ttl = 32; | |
1ca7768c | 2806 | iph->tos = pkt_dev->tos; |
222f1806 | 2807 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2808 | iph->saddr = pkt_dev->cur_saddr; |
2809 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2810 | iph->id = htons(pkt_dev->ip_id); |
2811 | pkt_dev->ip_id++; | |
1da177e4 LT |
2812 | iph->frag_off = 0; |
2813 | iplen = 20 + 8 + datalen; | |
2814 | iph->tot_len = htons(iplen); | |
03c633e7 | 2815 | ip_send_check(iph); |
ca6549af | 2816 | skb->protocol = protocol; |
1da177e4 LT |
2817 | skb->dev = odev; |
2818 | skb->pkt_type = PACKET_HOST; | |
c26bf4a5 | 2819 | |
7744b5f3 SD |
2820 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2821 | ||
c26bf4a5 TG |
2822 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2823 | skb->ip_summed = CHECKSUM_NONE; | |
c8cd0989 | 2824 | } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM)) { |
c26bf4a5 TG |
2825 | skb->ip_summed = CHECKSUM_PARTIAL; |
2826 | skb->csum = 0; | |
7744b5f3 | 2827 | udp4_hwcsum(skb, iph->saddr, iph->daddr); |
c26bf4a5 | 2828 | } else { |
7744b5f3 | 2829 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0); |
c26bf4a5 TG |
2830 | |
2831 | /* add protocol-dependent pseudo-header */ | |
7744b5f3 | 2832 | udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, |
c26bf4a5 TG |
2833 | datalen + 8, IPPROTO_UDP, csum); |
2834 | ||
2835 | if (udph->check == 0) | |
2836 | udph->check = CSUM_MANGLED_0; | |
2837 | } | |
2838 | ||
a553e4a6 JHS |
2839 | #ifdef CONFIG_XFRM |
2840 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2841 | return NULL; | |
2842 | #endif | |
2843 | ||
1da177e4 LT |
2844 | return skb; |
2845 | } | |
2846 | ||
222f1806 LC |
2847 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2848 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2849 | { |
2850 | struct sk_buff *skb = NULL; | |
2851 | __u8 *eth; | |
2852 | struct udphdr *udph; | |
c26bf4a5 | 2853 | int datalen, udplen; |
1da177e4 | 2854 | struct ipv6hdr *iph; |
d5f1ce9a | 2855 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2856 | __be32 *mpls; |
34954ddc FF |
2857 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2858 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2859 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2860 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2861 | u16 queue_map; |
ca6549af SW |
2862 | |
2863 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2864 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2865 | |
34954ddc | 2866 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2867 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2868 | |
64053bee RO |
2869 | /* Update any of the values, used when we're incrementing various |
2870 | * fields. | |
2871 | */ | |
2872 | mod_cur_headers(pkt_dev); | |
eb589063 | 2873 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2874 | |
63d75463 | 2875 | skb = pktgen_alloc_skb(odev, pkt_dev); |
1da177e4 LT |
2876 | if (!skb) { |
2877 | sprintf(pkt_dev->result, "No memory"); | |
2878 | return NULL; | |
2879 | } | |
2880 | ||
7a6e288d | 2881 | prefetchw(skb->data); |
1da177e4 LT |
2882 | skb_reserve(skb, 16); |
2883 | ||
2884 | /* Reserve for ethernet and IP header */ | |
d58ff351 | 2885 | eth = skb_push(skb, 14); |
4df864c1 | 2886 | mpls = skb_put(skb, pkt_dev->nr_labels * sizeof(__u32)); |
ca6549af SW |
2887 | if (pkt_dev->nr_labels) |
2888 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2889 | |
2890 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2891 | if (pkt_dev->svlan_id != 0xffff) { |
4df864c1 | 2892 | svlan_tci = skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2893 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2894 | pkt_dev->svlan_cfi, | |
2895 | pkt_dev->svlan_p); | |
4df864c1 JB |
2896 | svlan_encapsulated_proto = skb_put(skb, |
2897 | sizeof(__be16)); | |
d5f1ce9a | 2898 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc | 2899 | } |
4df864c1 | 2900 | vlan_tci = skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2901 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2902 | pkt_dev->vlan_cfi, | |
2903 | pkt_dev->vlan_p); | |
4df864c1 | 2904 | vlan_encapsulated_proto = skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2905 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2906 | } |
2907 | ||
c145aeb3 | 2908 | skb_reset_mac_header(skb); |
525cebed | 2909 | skb_set_network_header(skb, skb->len); |
4df864c1 | 2910 | iph = skb_put(skb, sizeof(struct ipv6hdr)); |
525cebed TG |
2911 | |
2912 | skb_set_transport_header(skb, skb->len); | |
4df864c1 | 2913 | udph = skb_put(skb, sizeof(struct udphdr)); |
fd2ea0a7 | 2914 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2915 | skb->priority = pkt_dev->skb_priority; |
1da177e4 | 2916 | |
1da177e4 | 2917 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2918 | *(__be16 *) ð[12] = protocol; |
64053bee | 2919 | |
ca6549af SW |
2920 | /* Eth + IPh + UDPh + mpls */ |
2921 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2922 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2923 | pkt_dev->pkt_overhead; |
1da177e4 | 2924 | |
5aa8b572 | 2925 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 2926 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 2927 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
2928 | } |
2929 | ||
c26bf4a5 | 2930 | udplen = datalen + sizeof(struct udphdr); |
1da177e4 LT |
2931 | udph->source = htons(pkt_dev->cur_udp_src); |
2932 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
c26bf4a5 TG |
2933 | udph->len = htons(udplen); |
2934 | udph->check = 0; | |
1da177e4 | 2935 | |
d5f1ce9a | 2936 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2937 | |
1ca7768c FF |
2938 | if (pkt_dev->traffic_class) { |
2939 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2940 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2941 | } |
2942 | ||
1da177e4 LT |
2943 | iph->hop_limit = 32; |
2944 | ||
c26bf4a5 | 2945 | iph->payload_len = htons(udplen); |
1da177e4 LT |
2946 | iph->nexthdr = IPPROTO_UDP; |
2947 | ||
4e3fd7a0 AD |
2948 | iph->daddr = pkt_dev->cur_in6_daddr; |
2949 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 2950 | |
ca6549af | 2951 | skb->protocol = protocol; |
1da177e4 LT |
2952 | skb->dev = odev; |
2953 | skb->pkt_type = PACKET_HOST; | |
2954 | ||
7744b5f3 SD |
2955 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2956 | ||
c26bf4a5 TG |
2957 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2958 | skb->ip_summed = CHECKSUM_NONE; | |
c8cd0989 | 2959 | } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IPV6_CSUM)) { |
c26bf4a5 TG |
2960 | skb->ip_summed = CHECKSUM_PARTIAL; |
2961 | skb->csum_start = skb_transport_header(skb) - skb->head; | |
2962 | skb->csum_offset = offsetof(struct udphdr, check); | |
2963 | udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); | |
2964 | } else { | |
7744b5f3 | 2965 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0); |
c26bf4a5 TG |
2966 | |
2967 | /* add protocol-dependent pseudo-header */ | |
2968 | udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); | |
2969 | ||
2970 | if (udph->check == 0) | |
2971 | udph->check = CSUM_MANGLED_0; | |
2972 | } | |
2973 | ||
1da177e4 LT |
2974 | return skb; |
2975 | } | |
2976 | ||
475ac1e4 SH |
2977 | static struct sk_buff *fill_packet(struct net_device *odev, |
2978 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 2979 | { |
222f1806 | 2980 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
2981 | return fill_packet_ipv6(odev, pkt_dev); |
2982 | else | |
2983 | return fill_packet_ipv4(odev, pkt_dev); | |
2984 | } | |
2985 | ||
222f1806 | 2986 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 2987 | { |
222f1806 LC |
2988 | pkt_dev->seq_num = 1; |
2989 | pkt_dev->idle_acc = 0; | |
1da177e4 | 2990 | pkt_dev->sofar = 0; |
222f1806 LC |
2991 | pkt_dev->tx_bytes = 0; |
2992 | pkt_dev->errors = 0; | |
1da177e4 LT |
2993 | } |
2994 | ||
2995 | /* Set up structure for sending pkts, clear counters */ | |
2996 | ||
2997 | static void pktgen_run(struct pktgen_thread *t) | |
2998 | { | |
c26a8016 | 2999 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3000 | int started = 0; |
3001 | ||
f9467eae | 3002 | func_enter(); |
1da177e4 | 3003 | |
8788370a JDB |
3004 | rcu_read_lock(); |
3005 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
1da177e4 LT |
3006 | |
3007 | /* | |
3008 | * setup odev and create initial packet. | |
3009 | */ | |
3010 | pktgen_setup_inject(pkt_dev); | |
3011 | ||
222f1806 | 3012 | if (pkt_dev->odev) { |
1da177e4 | 3013 | pktgen_clear_counters(pkt_dev); |
1da177e4 | 3014 | pkt_dev->skb = NULL; |
398f382c | 3015 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 3016 | |
16dab72f | 3017 | set_pkt_overhead(pkt_dev); |
222f1806 | 3018 | |
1da177e4 | 3019 | strcpy(pkt_dev->result, "Starting"); |
8788370a | 3020 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3021 | started++; |
222f1806 | 3022 | } else |
1da177e4 LT |
3023 | strcpy(pkt_dev->result, "Error starting"); |
3024 | } | |
8788370a | 3025 | rcu_read_unlock(); |
222f1806 LC |
3026 | if (started) |
3027 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3028 | } |
3029 | ||
4e58a027 | 3030 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 3031 | { |
cdcdbe0b | 3032 | struct pktgen_thread *t; |
1da177e4 | 3033 | |
f9467eae | 3034 | func_enter(); |
1da177e4 | 3035 | |
6146e6a4 | 3036 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3037 | |
4e58a027 | 3038 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 3039 | t->control |= T_STOP; |
cdcdbe0b | 3040 | |
6146e6a4 | 3041 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3042 | } |
3043 | ||
648fda74 | 3044 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3045 | { |
648fda74 | 3046 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3047 | |
8788370a JDB |
3048 | rcu_read_lock(); |
3049 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
3050 | if (pkt_dev->running) { | |
3051 | rcu_read_unlock(); | |
648fda74 | 3052 | return 1; |
8788370a JDB |
3053 | } |
3054 | rcu_read_unlock(); | |
648fda74 | 3055 | return 0; |
1da177e4 LT |
3056 | } |
3057 | ||
222f1806 | 3058 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3059 | { |
222f1806 | 3060 | while (thread_is_running(t)) { |
1da177e4 | 3061 | |
720f1de4 PA |
3062 | /* note: 't' will still be around even after the unlock/lock |
3063 | * cycle because pktgen_thread threads are only cleared at | |
3064 | * net exit | |
3065 | */ | |
3066 | mutex_unlock(&pktgen_thread_lock); | |
222f1806 | 3067 | msleep_interruptible(100); |
720f1de4 | 3068 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3069 | |
222f1806 LC |
3070 | if (signal_pending(current)) |
3071 | goto signal; | |
222f1806 | 3072 | } |
222f1806 LC |
3073 | return 1; |
3074 | signal: | |
3075 | return 0; | |
1da177e4 LT |
3076 | } |
3077 | ||
4e58a027 | 3078 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 3079 | { |
cdcdbe0b | 3080 | struct pktgen_thread *t; |
1da177e4 | 3081 | int sig = 1; |
222f1806 | 3082 | |
720f1de4 PA |
3083 | /* prevent from racing with rmmod */ |
3084 | if (!try_module_get(THIS_MODULE)) | |
3085 | return sig; | |
3086 | ||
6146e6a4 | 3087 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3088 | |
4e58a027 | 3089 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 3090 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3091 | if (sig == 0) |
3092 | break; | |
1da177e4 | 3093 | } |
cdcdbe0b LC |
3094 | |
3095 | if (sig == 0) | |
4e58a027 | 3096 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3097 | t->control |= (T_STOP); |
cdcdbe0b | 3098 | |
6146e6a4 | 3099 | mutex_unlock(&pktgen_thread_lock); |
720f1de4 | 3100 | module_put(THIS_MODULE); |
1da177e4 LT |
3101 | return sig; |
3102 | } | |
3103 | ||
4e58a027 | 3104 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 3105 | { |
cdcdbe0b | 3106 | struct pktgen_thread *t; |
1da177e4 | 3107 | |
f9467eae | 3108 | func_enter(); |
1da177e4 | 3109 | |
6146e6a4 | 3110 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3111 | |
4e58a027 | 3112 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3113 | t->control |= (T_RUN); |
cdcdbe0b | 3114 | |
6146e6a4 | 3115 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3116 | |
63adc6fb SH |
3117 | /* Propagate thread->control */ |
3118 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3119 | |
4e58a027 | 3120 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3121 | } |
3122 | ||
4e58a027 | 3123 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3124 | { |
3125 | struct pktgen_thread *t; | |
3126 | ||
f9467eae | 3127 | func_enter(); |
eb37b41c JB |
3128 | |
3129 | mutex_lock(&pktgen_thread_lock); | |
3130 | ||
4e58a027 | 3131 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3132 | t->control |= (T_REMDEVALL); |
3133 | ||
3134 | mutex_unlock(&pktgen_thread_lock); | |
3135 | ||
63adc6fb SH |
3136 | /* Propagate thread->control */ |
3137 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3138 | |
4e58a027 | 3139 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3140 | } |
3141 | ||
1da177e4 LT |
3142 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3143 | { | |
fd29cf72 | 3144 | __u64 bps, mbps, pps; |
222f1806 | 3145 | char *p = pkt_dev->result; |
fd29cf72 SH |
3146 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3147 | pkt_dev->started_at); | |
3148 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3149 | ||
03a14ab1 | 3150 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3151 | (unsigned long long)ktime_to_us(elapsed), |
3152 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3153 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3154 | (unsigned long long)pkt_dev->sofar, |
3155 | pkt_dev->cur_pkt_size, nr_frags); | |
3156 | ||
fd29cf72 SH |
3157 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3158 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3159 | |
3160 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3161 | ||
3162 | mbps = bps; | |
3163 | do_div(mbps, 1000000); | |
3164 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3165 | (unsigned long long)pps, | |
3166 | (unsigned long long)mbps, | |
3167 | (unsigned long long)bps, | |
3168 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3169 | } |
1da177e4 LT |
3170 | |
3171 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3172 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3173 | { |
222f1806 | 3174 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3175 | |
222f1806 | 3176 | if (!pkt_dev->running) { |
294a0b7f JP |
3177 | pr_warn("interface: %s is already stopped\n", |
3178 | pkt_dev->odevname); | |
222f1806 LC |
3179 | return -EINVAL; |
3180 | } | |
1da177e4 | 3181 | |
8788370a | 3182 | pkt_dev->running = 0; |
3bda06a3 SH |
3183 | kfree_skb(pkt_dev->skb); |
3184 | pkt_dev->skb = NULL; | |
398f382c | 3185 | pkt_dev->stopped_at = ktime_get(); |
1da177e4 | 3186 | |
95ed63f7 | 3187 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3188 | |
222f1806 | 3189 | return 0; |
1da177e4 LT |
3190 | } |
3191 | ||
222f1806 | 3192 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3193 | { |
c26a8016 | 3194 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3195 | |
8788370a JDB |
3196 | rcu_read_lock(); |
3197 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
c26a8016 | 3198 | if (!pkt_dev->running) |
222f1806 LC |
3199 | continue; |
3200 | if (best == NULL) | |
c26a8016 | 3201 | best = pkt_dev; |
398f382c | 3202 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3203 | best = pkt_dev; |
1da177e4 | 3204 | } |
8788370a JDB |
3205 | rcu_read_unlock(); |
3206 | ||
222f1806 | 3207 | return best; |
1da177e4 LT |
3208 | } |
3209 | ||
222f1806 LC |
3210 | static void pktgen_stop(struct pktgen_thread *t) |
3211 | { | |
c26a8016 | 3212 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3213 | |
f9467eae | 3214 | func_enter(); |
1da177e4 | 3215 | |
8788370a | 3216 | rcu_read_lock(); |
1da177e4 | 3217 | |
8788370a | 3218 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { |
c26a8016 | 3219 | pktgen_stop_device(pkt_dev); |
95ed63f7 | 3220 | } |
1da177e4 | 3221 | |
8788370a | 3222 | rcu_read_unlock(); |
1da177e4 LT |
3223 | } |
3224 | ||
95ed63f7 AK |
3225 | /* |
3226 | * one of our devices needs to be removed - find it | |
3227 | * and remove it | |
3228 | */ | |
3229 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3230 | { | |
c26a8016 LC |
3231 | struct list_head *q, *n; |
3232 | struct pktgen_dev *cur; | |
95ed63f7 | 3233 | |
f9467eae | 3234 | func_enter(); |
95ed63f7 | 3235 | |
c26a8016 LC |
3236 | list_for_each_safe(q, n, &t->if_list) { |
3237 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3238 | |
222f1806 LC |
3239 | if (!cur->removal_mark) |
3240 | continue; | |
95ed63f7 | 3241 | |
86dc1ad2 | 3242 | kfree_skb(cur->skb); |
95ed63f7 AK |
3243 | cur->skb = NULL; |
3244 | ||
3245 | pktgen_remove_device(t, cur); | |
3246 | ||
3247 | break; | |
3248 | } | |
95ed63f7 AK |
3249 | } |
3250 | ||
222f1806 | 3251 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3252 | { |
c26a8016 LC |
3253 | struct list_head *q, *n; |
3254 | struct pktgen_dev *cur; | |
222f1806 | 3255 | |
f9467eae JP |
3256 | func_enter(); |
3257 | ||
222f1806 | 3258 | /* Remove all devices, free mem */ |
95ed63f7 | 3259 | |
c26a8016 LC |
3260 | list_for_each_safe(q, n, &t->if_list) { |
3261 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3262 | |
86dc1ad2 | 3263 | kfree_skb(cur->skb); |
95ed63f7 AK |
3264 | cur->skb = NULL; |
3265 | ||
1da177e4 LT |
3266 | pktgen_remove_device(t, cur); |
3267 | } | |
1da177e4 LT |
3268 | } |
3269 | ||
222f1806 | 3270 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3271 | { |
222f1806 | 3272 | /* Remove from the thread list */ |
4e58a027 | 3273 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3274 | } |
3275 | ||
ef87979c | 3276 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3277 | { |
398f382c | 3278 | ktime_t idle_start = ktime_get(); |
ef87979c | 3279 | schedule(); |
398f382c | 3280 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3281 | } |
3791decb | 3282 | |
ef87979c SH |
3283 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3284 | { | |
398f382c | 3285 | ktime_t idle_start = ktime_get(); |
3791decb | 3286 | |
63354797 | 3287 | while (refcount_read(&(pkt_dev->skb->users)) != 1) { |
ef87979c SH |
3288 | if (signal_pending(current)) |
3289 | break; | |
3290 | ||
3291 | if (need_resched()) | |
3292 | pktgen_resched(pkt_dev); | |
3293 | else | |
3294 | cpu_relax(); | |
3295 | } | |
398f382c | 3296 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3297 | } |
3298 | ||
475ac1e4 | 3299 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3300 | { |
6aa7de05 | 3301 | unsigned int burst = READ_ONCE(pkt_dev->burst); |
00829823 | 3302 | struct net_device *odev = pkt_dev->odev; |
fd2ea0a7 | 3303 | struct netdev_queue *txq; |
62f64aed | 3304 | struct sk_buff *skb; |
1da177e4 LT |
3305 | int ret; |
3306 | ||
ef87979c SH |
3307 | /* If device is offline, then don't send */ |
3308 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3309 | pktgen_stop_device(pkt_dev); | |
3310 | return; | |
fd2ea0a7 DM |
3311 | } |
3312 | ||
ef87979c SH |
3313 | /* This is max DELAY, this has special meaning of |
3314 | * "never transmit" | |
3315 | */ | |
3316 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3317 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3318 | return; |
1da177e4 | 3319 | } |
222f1806 | 3320 | |
ef87979c | 3321 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3322 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3323 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3324 | /* build a new pkt */ | |
3325 | kfree_skb(pkt_dev->skb); | |
3326 | ||
3327 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3328 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3329 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3330 | schedule(); |
3331 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3332 | return; | |
1da177e4 | 3333 | } |
baac8564 | 3334 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf | 3335 | pkt_dev->clone_count = 0; /* reset counter */ |
1da177e4 | 3336 | } |
95ed63f7 | 3337 | |
ef87979c SH |
3338 | if (pkt_dev->delay && pkt_dev->last_ok) |
3339 | spin(pkt_dev, pkt_dev->next_tx); | |
3340 | ||
62f64aed AS |
3341 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) { |
3342 | skb = pkt_dev->skb; | |
3343 | skb->protocol = eth_type_trans(skb, skb->dev); | |
63354797 | 3344 | refcount_add(burst, &skb->users); |
62f64aed AS |
3345 | local_bh_disable(); |
3346 | do { | |
3347 | ret = netif_receive_skb(skb); | |
3348 | if (ret == NET_RX_DROP) | |
3349 | pkt_dev->errors++; | |
3350 | pkt_dev->sofar++; | |
3351 | pkt_dev->seq_num++; | |
63354797 | 3352 | if (refcount_read(&skb->users) != burst) { |
62f64aed AS |
3353 | /* skb was queued by rps/rfs or taps, |
3354 | * so cannot reuse this skb | |
3355 | */ | |
63354797 | 3356 | WARN_ON(refcount_sub_and_test(burst - 1, &skb->users)); |
62f64aed AS |
3357 | /* get out of the loop and wait |
3358 | * until skb is consumed | |
3359 | */ | |
62f64aed AS |
3360 | break; |
3361 | } | |
3362 | /* skb was 'freed' by stack, so clean few | |
3363 | * bits and reuse it | |
3364 | */ | |
a5135bcf | 3365 | skb_reset_tc(skb); |
62f64aed AS |
3366 | } while (--burst > 0); |
3367 | goto out; /* Skips xmit_mode M_START_XMIT */ | |
0967f244 JF |
3368 | } else if (pkt_dev->xmit_mode == M_QUEUE_XMIT) { |
3369 | local_bh_disable(); | |
63354797 | 3370 | refcount_inc(&pkt_dev->skb->users); |
0967f244 JF |
3371 | |
3372 | ret = dev_queue_xmit(pkt_dev->skb); | |
3373 | switch (ret) { | |
3374 | case NET_XMIT_SUCCESS: | |
3375 | pkt_dev->sofar++; | |
3376 | pkt_dev->seq_num++; | |
3377 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; | |
3378 | break; | |
3379 | case NET_XMIT_DROP: | |
3380 | case NET_XMIT_CN: | |
3381 | /* These are all valid return codes for a qdisc but | |
3382 | * indicate packets are being dropped or will likely | |
3383 | * be dropped soon. | |
3384 | */ | |
3385 | case NETDEV_TX_BUSY: | |
3386 | /* qdisc may call dev_hard_start_xmit directly in cases | |
3387 | * where no queues exist e.g. loopback device, virtual | |
3388 | * devices, etc. In this case we need to handle | |
3389 | * NETDEV_TX_ codes. | |
3390 | */ | |
3391 | default: | |
3392 | pkt_dev->errors++; | |
3393 | net_info_ratelimited("%s xmit error: %d\n", | |
3394 | pkt_dev->odevname, ret); | |
3395 | break; | |
3396 | } | |
3397 | goto out; | |
62f64aed AS |
3398 | } |
3399 | ||
10c51b56 | 3400 | txq = skb_get_tx_queue(odev, pkt_dev->skb); |
fd2ea0a7 | 3401 | |
0f2eea4b DB |
3402 | local_bh_disable(); |
3403 | ||
3404 | HARD_TX_LOCK(odev, txq, smp_processor_id()); | |
5b8db2f5 | 3405 | |
6f25cd47 | 3406 | if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { |
0835acfe ED |
3407 | pkt_dev->last_ok = 0; |
3408 | goto unlock; | |
3409 | } | |
63354797 | 3410 | refcount_add(burst, &pkt_dev->skb->users); |
38b2cf29 AS |
3411 | |
3412 | xmit_more: | |
3413 | ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0); | |
ef87979c SH |
3414 | |
3415 | switch (ret) { | |
3416 | case NETDEV_TX_OK: | |
ef87979c SH |
3417 | pkt_dev->last_ok = 1; |
3418 | pkt_dev->sofar++; | |
3419 | pkt_dev->seq_num++; | |
baac8564 | 3420 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
38b2cf29 AS |
3421 | if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq)) |
3422 | goto xmit_more; | |
ef87979c | 3423 | break; |
f466dba1 JF |
3424 | case NET_XMIT_DROP: |
3425 | case NET_XMIT_CN: | |
f466dba1 JF |
3426 | /* skb has been consumed */ |
3427 | pkt_dev->errors++; | |
3428 | break; | |
ef87979c | 3429 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3430 | net_info_ratelimited("%s xmit error: %d\n", |
3431 | pkt_dev->odevname, ret); | |
ef87979c | 3432 | pkt_dev->errors++; |
f91845da | 3433 | /* fall through */ |
ef87979c SH |
3434 | case NETDEV_TX_BUSY: |
3435 | /* Retry it next time */ | |
63354797 | 3436 | refcount_dec(&(pkt_dev->skb->users)); |
ef87979c | 3437 | pkt_dev->last_ok = 0; |
222f1806 | 3438 | } |
38b2cf29 | 3439 | if (unlikely(burst)) |
63354797 | 3440 | WARN_ON(refcount_sub_and_test(burst, &pkt_dev->skb->users)); |
0835acfe | 3441 | unlock: |
0f2eea4b DB |
3442 | HARD_TX_UNLOCK(odev, txq); |
3443 | ||
62f64aed | 3444 | out: |
0f2eea4b | 3445 | local_bh_enable(); |
222f1806 | 3446 | |
1da177e4 LT |
3447 | /* If pkt_dev->count is zero, then run forever */ |
3448 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3449 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3450 | |
1da177e4 LT |
3451 | /* Done with this */ |
3452 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3453 | } |
222f1806 | 3454 | } |
1da177e4 | 3455 | |
4ec93edb | 3456 | /* |
1da177e4 LT |
3457 | * Main loop of the thread goes here |
3458 | */ | |
3459 | ||
ee74baa7 | 3460 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3461 | { |
3462 | DEFINE_WAIT(wait); | |
ee74baa7 | 3463 | struct pktgen_thread *t = arg; |
222f1806 | 3464 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3465 | int cpu = t->cpu; |
1da177e4 | 3466 | |
ee74baa7 | 3467 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3468 | |
3469 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3470 | complete(&t->start_done); |
1da177e4 | 3471 | |
f9467eae | 3472 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3473 | |
83144186 RW |
3474 | set_freezable(); |
3475 | ||
ee74baa7 DM |
3476 | while (!kthread_should_stop()) { |
3477 | pkt_dev = next_to_run(t); | |
1da177e4 | 3478 | |
ef87979c | 3479 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3480 | if (t->net->pktgen_exiting) |
551eaff1 | 3481 | break; |
ef87979c SH |
3482 | wait_event_interruptible_timeout(t->queue, |
3483 | t->control != 0, | |
3484 | HZ/10); | |
1b3f720b | 3485 | try_to_freeze(); |
ef87979c | 3486 | continue; |
ee74baa7 | 3487 | } |
1da177e4 | 3488 | |
ef87979c | 3489 | if (likely(pkt_dev)) { |
1da177e4 LT |
3490 | pktgen_xmit(pkt_dev); |
3491 | ||
ef87979c SH |
3492 | if (need_resched()) |
3493 | pktgen_resched(pkt_dev); | |
3494 | else | |
3495 | cpu_relax(); | |
3496 | } | |
3497 | ||
222f1806 | 3498 | if (t->control & T_STOP) { |
1da177e4 LT |
3499 | pktgen_stop(t); |
3500 | t->control &= ~(T_STOP); | |
3501 | } | |
3502 | ||
222f1806 | 3503 | if (t->control & T_RUN) { |
1da177e4 LT |
3504 | pktgen_run(t); |
3505 | t->control &= ~(T_RUN); | |
3506 | } | |
3507 | ||
222f1806 | 3508 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3509 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3510 | t->control &= ~(T_REMDEVALL); |
3511 | } | |
3512 | ||
222f1806 | 3513 | if (t->control & T_REMDEV) { |
95ed63f7 | 3514 | pktgen_rem_one_if(t); |
1da177e4 LT |
3515 | t->control &= ~(T_REMDEV); |
3516 | } | |
3517 | ||
09fe3ef4 | 3518 | try_to_freeze(); |
222f1806 | 3519 | } |
1da177e4 | 3520 | |
f9467eae | 3521 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3522 | pktgen_stop(t); |
1da177e4 | 3523 | |
f9467eae | 3524 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3525 | pktgen_rem_all_ifs(t); |
1da177e4 | 3526 | |
f9467eae | 3527 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3528 | pktgen_rem_thread(t); |
cdcdbe0b | 3529 | |
ee74baa7 | 3530 | return 0; |
1da177e4 LT |
3531 | } |
3532 | ||
222f1806 | 3533 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3534 | const char *ifname, bool exact) |
1da177e4 | 3535 | { |
c26a8016 | 3536 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3537 | size_t len = strlen(ifname); |
222f1806 | 3538 | |
8788370a JDB |
3539 | rcu_read_lock(); |
3540 | list_for_each_entry_rcu(p, &t->if_list, list) | |
3e984840 ED |
3541 | if (strncmp(p->odevname, ifname, len) == 0) { |
3542 | if (p->odevname[len]) { | |
3543 | if (exact || p->odevname[len] != '@') | |
3544 | continue; | |
3545 | } | |
c26a8016 | 3546 | pkt_dev = p; |
222f1806 LC |
3547 | break; |
3548 | } | |
222f1806 | 3549 | |
8788370a | 3550 | rcu_read_unlock(); |
f9467eae | 3551 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3552 | return pkt_dev; |
1da177e4 LT |
3553 | } |
3554 | ||
4ec93edb YH |
3555 | /* |
3556 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3557 | */ |
3558 | ||
222f1806 LC |
3559 | static int add_dev_to_thread(struct pktgen_thread *t, |
3560 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3561 | { |
3562 | int rv = 0; | |
222f1806 | 3563 | |
8788370a JDB |
3564 | /* This function cannot be called concurrently, as its called |
3565 | * under pktgen_thread_lock mutex, but it can run from | |
3566 | * userspace on another CPU than the kthread. The if_lock() | |
3567 | * is used here to sync with concurrent instances of | |
3568 | * _rem_dev_from_if_list() invoked via kthread, which is also | |
3569 | * updating the if_list */ | |
222f1806 LC |
3570 | if_lock(t); |
3571 | ||
3572 | if (pkt_dev->pg_thread) { | |
f9467eae | 3573 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3574 | rv = -EBUSY; |
3575 | goto out; | |
3576 | } | |
c26a8016 | 3577 | |
1da177e4 | 3578 | pkt_dev->running = 0; |
8788370a JDB |
3579 | pkt_dev->pg_thread = t; |
3580 | list_add_rcu(&pkt_dev->list, &t->if_list); | |
1da177e4 | 3581 | |
222f1806 LC |
3582 | out: |
3583 | if_unlock(t); | |
3584 | return rv; | |
1da177e4 LT |
3585 | } |
3586 | ||
3587 | /* Called under thread lock */ | |
3588 | ||
222f1806 | 3589 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3590 | { |
222f1806 | 3591 | struct pktgen_dev *pkt_dev; |
39df232f | 3592 | int err; |
3291b9db | 3593 | int node = cpu_to_node(t->cpu); |
222f1806 | 3594 | |
1da177e4 LT |
3595 | /* We don't allow a device to be on several threads */ |
3596 | ||
4e58a027 | 3597 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3598 | if (pkt_dev) { |
f9467eae | 3599 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3600 | return -EBUSY; |
3601 | } | |
d50a6b56 | 3602 | |
3291b9db | 3603 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3604 | if (!pkt_dev) |
3605 | return -ENOMEM; | |
3606 | ||
593f63b0 | 3607 | strcpy(pkt_dev->odevname, ifname); |
fd7beced KC |
3608 | pkt_dev->flows = vzalloc_node(array_size(MAX_CFLOWS, |
3609 | sizeof(struct flow_state)), | |
3291b9db | 3610 | node); |
d50a6b56 SH |
3611 | if (pkt_dev->flows == NULL) { |
3612 | kfree(pkt_dev); | |
3613 | return -ENOMEM; | |
3614 | } | |
d50a6b56 | 3615 | |
95ed63f7 | 3616 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3617 | pkt_dev->nfrags = 0; |
fd29cf72 | 3618 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3619 | pkt_dev->count = pg_count_d; |
3620 | pkt_dev->sofar = 0; | |
222f1806 | 3621 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3622 | pkt_dev->udp_src_max = 9; |
3623 | pkt_dev->udp_dst_min = 9; | |
3624 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3625 | pkt_dev->vlan_p = 0; |
3626 | pkt_dev->vlan_cfi = 0; | |
3627 | pkt_dev->vlan_id = 0xffff; | |
3628 | pkt_dev->svlan_p = 0; | |
3629 | pkt_dev->svlan_cfi = 0; | |
3630 | pkt_dev->svlan_id = 0xffff; | |
38b2cf29 | 3631 | pkt_dev->burst = 1; |
98fa15f3 | 3632 | pkt_dev->node = NUMA_NO_NODE; |
34954ddc | 3633 | |
4e58a027 | 3634 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3635 | if (err) |
3636 | goto out1; | |
d8873315 NH |
3637 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3638 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3639 | |
4e58a027 | 3640 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3641 | &pktgen_if_fops, pkt_dev); |
39df232f | 3642 | if (!pkt_dev->entry) { |
f9467eae | 3643 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3644 | PG_PROC_DIR, ifname); |
39df232f SH |
3645 | err = -EINVAL; |
3646 | goto out2; | |
d50a6b56 | 3647 | } |
a553e4a6 JHS |
3648 | #ifdef CONFIG_XFRM |
3649 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3650 | pkt_dev->ipsproto = IPPROTO_ESP; | |
cf93d47e FD |
3651 | |
3652 | /* xfrm tunnel mode needs additional dst to extract outter | |
3653 | * ip header protocol/ttl/id field, here creat a phony one. | |
3654 | * instead of looking for a valid rt, which definitely hurting | |
3655 | * performance under such circumstance. | |
3656 | */ | |
3657 | pkt_dev->dstops.family = AF_INET; | |
b6ca8bd5 DM |
3658 | pkt_dev->xdst.u.dst.dev = pkt_dev->odev; |
3659 | dst_init_metrics(&pkt_dev->xdst.u.dst, pktgen_dst_metrics, false); | |
3660 | pkt_dev->xdst.child = &pkt_dev->xdst.u.dst; | |
3661 | pkt_dev->xdst.u.dst.ops = &pkt_dev->dstops; | |
a553e4a6 | 3662 | #endif |
d50a6b56 SH |
3663 | |
3664 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3665 | out2: |
3666 | dev_put(pkt_dev->odev); | |
3667 | out1: | |
a553e4a6 JHS |
3668 | #ifdef CONFIG_XFRM |
3669 | free_SAs(pkt_dev); | |
3670 | #endif | |
1d0ebfe7 | 3671 | vfree(pkt_dev->flows); |
39df232f SH |
3672 | kfree(pkt_dev); |
3673 | return err; | |
1da177e4 LT |
3674 | } |
3675 | ||
4e58a027 | 3676 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3677 | { |
cdcdbe0b | 3678 | struct pktgen_thread *t; |
d50a6b56 | 3679 | struct proc_dir_entry *pe; |
ee74baa7 | 3680 | struct task_struct *p; |
222f1806 | 3681 | |
3291b9db ED |
3682 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3683 | cpu_to_node(cpu)); | |
222f1806 | 3684 | if (!t) { |
f9467eae | 3685 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3686 | return -ENOMEM; |
3687 | } | |
3688 | ||
9a0b1e8b | 3689 | mutex_init(&t->if_lock); |
1da177e4 | 3690 | t->cpu = cpu; |
222f1806 | 3691 | |
ee74baa7 DM |
3692 | INIT_LIST_HEAD(&t->if_list); |
3693 | ||
4e58a027 | 3694 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3695 | init_completion(&t->start_done); |
ee74baa7 | 3696 | |
94dcf29a ED |
3697 | p = kthread_create_on_node(pktgen_thread_worker, |
3698 | t, | |
3699 | cpu_to_node(cpu), | |
3700 | "kpktgend_%d", cpu); | |
ee74baa7 | 3701 | if (IS_ERR(p)) { |
f9467eae | 3702 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3703 | list_del(&t->th_list); |
3704 | kfree(t); | |
3705 | return PTR_ERR(p); | |
3706 | } | |
3707 | kthread_bind(p, cpu); | |
3708 | t->tsk = p; | |
3709 | ||
4e58a027 | 3710 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3711 | &pktgen_thread_fops, t); |
222f1806 | 3712 | if (!pe) { |
f9467eae | 3713 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3714 | PG_PROC_DIR, t->tsk->comm); |
3715 | kthread_stop(p); | |
3716 | list_del(&t->th_list); | |
222f1806 LC |
3717 | kfree(t); |
3718 | return -EINVAL; | |
3719 | } | |
d50a6b56 | 3720 | |
4e58a027 | 3721 | t->net = pn; |
1fbe4b46 | 3722 | get_task_struct(p); |
ee74baa7 | 3723 | wake_up_process(p); |
d3ede327 | 3724 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3725 | |
3726 | return 0; | |
3727 | } | |
3728 | ||
4ec93edb YH |
3729 | /* |
3730 | * Removes a device from the thread if_list. | |
1da177e4 | 3731 | */ |
222f1806 LC |
3732 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3733 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3734 | { |
c26a8016 LC |
3735 | struct list_head *q, *n; |
3736 | struct pktgen_dev *p; | |
1da177e4 | 3737 | |
8788370a | 3738 | if_lock(t); |
c26a8016 LC |
3739 | list_for_each_safe(q, n, &t->if_list) { |
3740 | p = list_entry(q, struct pktgen_dev, list); | |
3741 | if (p == pkt_dev) | |
8788370a | 3742 | list_del_rcu(&p->list); |
1da177e4 | 3743 | } |
8788370a | 3744 | if_unlock(t); |
1da177e4 LT |
3745 | } |
3746 | ||
222f1806 LC |
3747 | static int pktgen_remove_device(struct pktgen_thread *t, |
3748 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3749 | { |
f9467eae | 3750 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3751 | |
222f1806 | 3752 | if (pkt_dev->running) { |
294a0b7f | 3753 | pr_warn("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3754 | pktgen_stop_device(pkt_dev); |
3755 | } | |
3756 | ||
3757 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3758 | |
3759 | if (pkt_dev->odev) { | |
3760 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3761 | pkt_dev->odev = NULL; |
3762 | } | |
3763 | ||
8788370a JDB |
3764 | /* Remove proc before if_list entry, because add_device uses |
3765 | * list to determine if interface already exist, avoid race | |
3766 | * with proc_create_data() */ | |
ef87c5d6 | 3767 | proc_remove(pkt_dev->entry); |
1da177e4 | 3768 | |
8788370a JDB |
3769 | /* And update the thread if_list */ |
3770 | _rem_dev_from_if_list(t, pkt_dev); | |
3771 | ||
a553e4a6 JHS |
3772 | #ifdef CONFIG_XFRM |
3773 | free_SAs(pkt_dev); | |
3774 | #endif | |
1d0ebfe7 | 3775 | vfree(pkt_dev->flows); |
26ad7879 ED |
3776 | if (pkt_dev->page) |
3777 | put_page(pkt_dev->page); | |
8788370a | 3778 | kfree_rcu(pkt_dev, rcu); |
222f1806 | 3779 | return 0; |
1da177e4 LT |
3780 | } |
3781 | ||
4e58a027 | 3782 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3783 | { |
4e58a027 | 3784 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3785 | struct proc_dir_entry *pe; |
4e58a027 CW |
3786 | int cpu, ret = 0; |
3787 | ||
3788 | pn->net = net; | |
3789 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3790 | pn->pktgen_exiting = false; | |
3791 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3792 | if (!pn->proc_dir) { | |
3793 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3794 | return -ENODEV; |
4e58a027 CW |
3795 | } |
3796 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3797 | if (pe == NULL) { |
4e58a027 | 3798 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3799 | ret = -EINVAL; |
4e58a027 | 3800 | goto remove; |
222f1806 | 3801 | } |
1da177e4 | 3802 | |
670c02c2 | 3803 | for_each_online_cpu(cpu) { |
8024bb24 | 3804 | int err; |
1da177e4 | 3805 | |
4e58a027 | 3806 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3807 | if (err) |
4e58a027 | 3808 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3809 | cpu, err); |
222f1806 | 3810 | } |
8024bb24 | 3811 | |
4e58a027 CW |
3812 | if (list_empty(&pn->pktgen_threads)) { |
3813 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3814 | ret = -ENODEV; |
4e58a027 | 3815 | goto remove_entry; |
8024bb24 LC |
3816 | } |
3817 | ||
222f1806 | 3818 | return 0; |
ce14f894 | 3819 | |
4e58a027 CW |
3820 | remove_entry: |
3821 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3822 | remove: | |
ece31ffd | 3823 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3824 | return ret; |
1da177e4 LT |
3825 | } |
3826 | ||
4e58a027 | 3827 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3828 | { |
4e58a027 | 3829 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3830 | struct pktgen_thread *t; |
3831 | struct list_head *q, *n; | |
d4b11335 | 3832 | LIST_HEAD(list); |
1da177e4 | 3833 | |
222f1806 | 3834 | /* Stop all interfaces & threads */ |
4e58a027 | 3835 | pn->pktgen_exiting = true; |
1da177e4 | 3836 | |
c57b5468 | 3837 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3838 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3839 | mutex_unlock(&pktgen_thread_lock); |
3840 | ||
3841 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3842 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3843 | list_del(&t->th_list); |
ee74baa7 | 3844 | kthread_stop(t->tsk); |
1fbe4b46 | 3845 | put_task_struct(t->tsk); |
ee74baa7 | 3846 | kfree(t); |
222f1806 | 3847 | } |
1da177e4 | 3848 | |
4e58a027 | 3849 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3850 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3851 | } |
3852 | ||
3853 | static struct pernet_operations pg_net_ops = { | |
3854 | .init = pg_net_init, | |
3855 | .exit = pg_net_exit, | |
3856 | .id = &pg_net_id, | |
3857 | .size = sizeof(struct pktgen_net), | |
3858 | }; | |
3859 | ||
3860 | static int __init pg_init(void) | |
3861 | { | |
3862 | int ret = 0; | |
1da177e4 | 3863 | |
4e58a027 CW |
3864 | pr_info("%s", version); |
3865 | ret = register_pernet_subsys(&pg_net_ops); | |
3866 | if (ret) | |
3867 | return ret; | |
3868 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3869 | if (ret) | |
3870 | unregister_pernet_subsys(&pg_net_ops); | |
3871 | ||
3872 | return ret; | |
3873 | } | |
3874 | ||
3875 | static void __exit pg_cleanup(void) | |
3876 | { | |
3877 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3878 | unregister_pernet_subsys(&pg_net_ops); | |
8788370a | 3879 | /* Don't need rcu_barrier() due to use of kfree_rcu() */ |
1da177e4 LT |
3880 | } |
3881 | ||
1da177e4 LT |
3882 | module_init(pg_init); |
3883 | module_exit(pg_cleanup); | |
3884 | ||
c3d2f52d | 3885 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3886 | MODULE_DESCRIPTION("Packet Generator tool"); |
3887 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3888 | MODULE_VERSION(VERSION); |
1da177e4 | 3889 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3890 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3891 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3892 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3893 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3894 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3895 | module_param(debug, int, 0); |
c3d2f52d | 3896 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |