Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Authors: |
| 3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> |
| 4 | * Uppsala University and |
| 5 | * Swedish University of Agricultural Sciences |
| 6 | * |
| 7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> |
| 8 | * Ben Greear <greearb@candelatech.com> |
| 9 | * Jens Låås <jens.laas@data.slu.se> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * as published by the Free Software Foundation; either version |
| 14 | * 2 of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * |
| 17 | * A tool for loading the network with preconfigurated packets. |
| 18 | * The tool is implemented as a linux module. Parameters are output |
| 19 | * device, delay (to hard_xmit), number of packets, and whether |
| 20 | * to use multiple SKBs or just the same one. |
| 21 | * pktgen uses the installed interface's output routine. |
| 22 | * |
| 23 | * Additional hacking by: |
| 24 | * |
| 25 | * Jens.Laas@data.slu.se |
| 26 | * Improved by ANK. 010120. |
| 27 | * Improved by ANK even more. 010212. |
| 28 | * MAC address typo fixed. 010417 --ro |
| 29 | * Integrated. 020301 --DaveM |
| 30 | * Added multiskb option 020301 --DaveM |
| 31 | * Scaling of results. 020417--sigurdur@linpro.no |
| 32 | * Significant re-work of the module: |
| 33 | * * Convert to threaded model to more efficiently be able to transmit |
| 34 | * and receive on multiple interfaces at once. |
| 35 | * * Converted many counters to __u64 to allow longer runs. |
| 36 | * * Allow configuration of ranges, like min/max IP address, MACs, |
| 37 | * and UDP-ports, for both source and destination, and can |
| 38 | * set to use a random distribution or sequentially walk the range. |
| 39 | * * Can now change most values after starting. |
| 40 | * * Place 12-byte packet in UDP payload with magic number, |
| 41 | * sequence number, and timestamp. |
| 42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and |
| 43 | * latencies (with micro-second) precision. |
| 44 | * * Add IOCTL interface to easily get counters & configuration. |
| 45 | * --Ben Greear <greearb@candelatech.com> |
| 46 | * |
| 47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
| 48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 |
| 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
| 50 | * clone_skb=0 means all packets are allocated this also means ranges time |
| 51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 |
| 52 | * clones. |
| 53 | * |
| 54 | * Also moved to /proc/net/pktgen/ |
| 55 | * --ro |
| 56 | * |
| 57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever |
| 58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. |
| 59 | * --Ben Greear <greearb@candelatech.com> |
| 60 | * |
| 61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) |
| 62 | * |
| 63 | * |
| 64 | * 021124 Finished major redesign and rewrite for new functionality. |
| 65 | * See Documentation/networking/pktgen.txt for how to use this. |
| 66 | * |
| 67 | * The new operation: |
| 68 | * For each CPU one thread/process is created at start. This process checks |
| 69 | * for running devices in the if_list and sends packets until count is 0 it |
| 70 | * also the thread checks the thread->control which is used for inter-process |
| 71 | * communication. controlling process "posts" operations to the threads this |
| 72 | * way. The if_lock should be possible to remove when add/rem_device is merged |
| 73 | * into this too. |
| 74 | * |
| 75 | * By design there should only be *one* "controlling" process. In practice |
| 76 | * multiple write accesses gives unpredictable result. Understood by "write" |
| 77 | * to /proc gives result code thats should be read be the "writer". |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 78 | * For practical use this should be no problem. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | * |
| 80 | * Note when adding devices to a specific CPU there good idea to also assign |
| 81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. |
| 82 | * --ro |
| 83 | * |
| 84 | * Fix refcount off by one if first packet fails, potential null deref, |
| 85 | * memleak 030710- KJP |
| 86 | * |
| 87 | * First "ranges" functionality for ipv6 030726 --ro |
| 88 | * |
| 89 | * Included flow support. 030802 ANK. |
| 90 | * |
| 91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> |
| 92 | * |
| 93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
| 94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 |
| 95 | * |
| 96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
| 97 | * <shemminger@osdl.org> 040923 |
| 98 | * |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 99 | * Randy Dunlap fixed u64 printk compiler waring |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | * |
| 101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> |
| 102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 |
| 103 | * |
| 104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
| 105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
| 106 | * |
| 107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
| 108 | * 050103 |
| 109 | */ |
| 110 | #include <linux/sys.h> |
| 111 | #include <linux/types.h> |
| 112 | #include <linux/module.h> |
| 113 | #include <linux/moduleparam.h> |
| 114 | #include <linux/kernel.h> |
| 115 | #include <linux/smp_lock.h> |
| 116 | #include <linux/sched.h> |
| 117 | #include <linux/slab.h> |
| 118 | #include <linux/vmalloc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #include <linux/unistd.h> |
| 120 | #include <linux/string.h> |
| 121 | #include <linux/ptrace.h> |
| 122 | #include <linux/errno.h> |
| 123 | #include <linux/ioport.h> |
| 124 | #include <linux/interrupt.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 125 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | #include <linux/delay.h> |
| 127 | #include <linux/timer.h> |
| 128 | #include <linux/init.h> |
| 129 | #include <linux/skbuff.h> |
| 130 | #include <linux/netdevice.h> |
| 131 | #include <linux/inet.h> |
| 132 | #include <linux/inetdevice.h> |
| 133 | #include <linux/rtnetlink.h> |
| 134 | #include <linux/if_arp.h> |
| 135 | #include <linux/in.h> |
| 136 | #include <linux/ip.h> |
| 137 | #include <linux/ipv6.h> |
| 138 | #include <linux/udp.h> |
| 139 | #include <linux/proc_fs.h> |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 140 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | #include <linux/wait.h> |
| 142 | #include <net/checksum.h> |
| 143 | #include <net/ipv6.h> |
| 144 | #include <net/addrconf.h> |
| 145 | #include <asm/byteorder.h> |
| 146 | #include <linux/rcupdate.h> |
| 147 | #include <asm/bitops.h> |
| 148 | #include <asm/io.h> |
| 149 | #include <asm/dma.h> |
| 150 | #include <asm/uaccess.h> |
| 151 | #include <asm/div64.h> /* do_div */ |
| 152 | #include <asm/timex.h> |
| 153 | |
| 154 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 155 | #define VERSION "pktgen v2.63: Packet Generator for packet performance testing.\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
| 157 | /* #define PG_DEBUG(a) a */ |
| 158 | #define PG_DEBUG(a) |
| 159 | |
| 160 | /* The buckets are exponential in 'width' */ |
| 161 | #define LAT_BUCKETS_MAX 32 |
| 162 | #define IP_NAME_SZ 32 |
| 163 | |
| 164 | /* Device flag bits */ |
| 165 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
| 166 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ |
| 167 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ |
| 168 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ |
| 169 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ |
| 170 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ |
| 171 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ |
| 172 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ |
| 173 | |
| 174 | /* Thread control flag bits */ |
| 175 | #define T_TERMINATE (1<<0) |
| 176 | #define T_STOP (1<<1) /* Stop run */ |
| 177 | #define T_RUN (1<<2) /* Start run */ |
| 178 | #define T_REMDEV (1<<3) /* Remove all devs */ |
| 179 | |
| 180 | /* Locks */ |
Stephen Hemminger | b7c8921 | 2005-10-14 15:26:34 -0700 | [diff] [blame] | 181 | #define thread_lock() down(&pktgen_sem) |
| 182 | #define thread_unlock() up(&pktgen_sem) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
| 184 | /* If lock -- can be removed after some work */ |
| 185 | #define if_lock(t) spin_lock(&(t->if_lock)); |
| 186 | #define if_unlock(t) spin_unlock(&(t->if_lock)); |
| 187 | |
| 188 | /* Used to help with determining the pkts on receive */ |
| 189 | #define PKTGEN_MAGIC 0xbe9be955 |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 190 | #define PG_PROC_DIR "pktgen" |
| 191 | #define PGCTRL "pgctrl" |
| 192 | static struct proc_dir_entry *pg_proc_dir = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | #define MAX_CFLOWS 65536 |
| 195 | |
| 196 | struct flow_state |
| 197 | { |
| 198 | __u32 cur_daddr; |
| 199 | int count; |
| 200 | }; |
| 201 | |
| 202 | struct pktgen_dev { |
| 203 | |
| 204 | /* |
| 205 | * Try to keep frequent/infrequent used vars. separated. |
| 206 | */ |
| 207 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 208 | char ifname[IFNAMSIZ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | char result[512]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | struct pktgen_thread* pg_thread; /* the owner */ |
| 212 | struct pktgen_dev *next; /* Used for chaining in the thread's run-queue */ |
| 213 | |
| 214 | int running; /* if this changes to false, the test will stop */ |
| 215 | |
| 216 | /* If min != max, then we will either do a linear iteration, or |
| 217 | * we will do a random selection from within the range. |
| 218 | */ |
| 219 | __u32 flags; |
| 220 | |
| 221 | int min_pkt_size; /* = ETH_ZLEN; */ |
| 222 | int max_pkt_size; /* = ETH_ZLEN; */ |
| 223 | int nfrags; |
| 224 | __u32 delay_us; /* Default delay */ |
| 225 | __u32 delay_ns; |
| 226 | __u64 count; /* Default No packets to send */ |
| 227 | __u64 sofar; /* How many pkts we've sent so far */ |
| 228 | __u64 tx_bytes; /* How many bytes we've transmitted */ |
| 229 | __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */ |
| 230 | |
| 231 | /* runtime counters relating to clone_skb */ |
| 232 | __u64 next_tx_us; /* timestamp of when to tx next */ |
| 233 | __u32 next_tx_ns; |
| 234 | |
| 235 | __u64 allocated_skbs; |
| 236 | __u32 clone_count; |
| 237 | int last_ok; /* Was last skb sent? |
| 238 | * Or a failed transmit of some sort? This will keep |
| 239 | * sequence numbers in order, for example. |
| 240 | */ |
| 241 | __u64 started_at; /* micro-seconds */ |
| 242 | __u64 stopped_at; /* micro-seconds */ |
| 243 | __u64 idle_acc; /* micro-seconds */ |
| 244 | __u32 seq_num; |
| 245 | |
| 246 | int clone_skb; /* Use multiple SKBs during packet gen. If this number |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 247 | * is greater than 1, then that many copies of the same |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | * packet will be sent before a new packet is allocated. |
| 249 | * For instance, if you want to send 1024 identical packets |
| 250 | * before creating a new packet, set clone_skb to 1024. |
| 251 | */ |
| 252 | |
| 253 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ |
| 254 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ |
| 255 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ |
| 256 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ |
| 257 | |
| 258 | struct in6_addr in6_saddr; |
| 259 | struct in6_addr in6_daddr; |
| 260 | struct in6_addr cur_in6_daddr; |
| 261 | struct in6_addr cur_in6_saddr; |
| 262 | /* For ranges */ |
| 263 | struct in6_addr min_in6_daddr; |
| 264 | struct in6_addr max_in6_daddr; |
| 265 | struct in6_addr min_in6_saddr; |
| 266 | struct in6_addr max_in6_saddr; |
| 267 | |
| 268 | /* If we're doing ranges, random or incremental, then this |
| 269 | * defines the min/max for those ranges. |
| 270 | */ |
| 271 | __u32 saddr_min; /* inclusive, source IP address */ |
| 272 | __u32 saddr_max; /* exclusive, source IP address */ |
| 273 | __u32 daddr_min; /* inclusive, dest IP address */ |
| 274 | __u32 daddr_max; /* exclusive, dest IP address */ |
| 275 | |
| 276 | __u16 udp_src_min; /* inclusive, source UDP port */ |
| 277 | __u16 udp_src_max; /* exclusive, source UDP port */ |
| 278 | __u16 udp_dst_min; /* inclusive, dest UDP port */ |
| 279 | __u16 udp_dst_max; /* exclusive, dest UDP port */ |
| 280 | |
| 281 | __u32 src_mac_count; /* How many MACs to iterate through */ |
| 282 | __u32 dst_mac_count; /* How many MACs to iterate through */ |
| 283 | |
| 284 | unsigned char dst_mac[6]; |
| 285 | unsigned char src_mac[6]; |
| 286 | |
| 287 | __u32 cur_dst_mac_offset; |
| 288 | __u32 cur_src_mac_offset; |
| 289 | __u32 cur_saddr; |
| 290 | __u32 cur_daddr; |
| 291 | __u16 cur_udp_dst; |
| 292 | __u16 cur_udp_src; |
| 293 | __u32 cur_pkt_size; |
| 294 | |
| 295 | __u8 hh[14]; |
| 296 | /* = { |
| 297 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, |
| 298 | |
| 299 | We fill in SRC address later |
| 300 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 301 | 0x08, 0x00 |
| 302 | }; |
| 303 | */ |
| 304 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ |
| 305 | |
| 306 | struct sk_buff* skb; /* skb we are to transmit next, mainly used for when we |
| 307 | * are transmitting the same one multiple times |
| 308 | */ |
| 309 | struct net_device* odev; /* The out-going device. Note that the device should |
| 310 | * have it's pg_info pointer pointing back to this |
| 311 | * device. This will be set when the user specifies |
| 312 | * the out-going device name (not when the inject is |
| 313 | * started as it used to do.) |
| 314 | */ |
| 315 | struct flow_state *flows; |
| 316 | unsigned cflows; /* Concurrent flows (config) */ |
| 317 | unsigned lflow; /* Flow length (config) */ |
| 318 | unsigned nflows; /* accumulated flows (stats) */ |
| 319 | }; |
| 320 | |
| 321 | struct pktgen_hdr { |
| 322 | __u32 pgh_magic; |
| 323 | __u32 seq_num; |
| 324 | __u32 tv_sec; |
| 325 | __u32 tv_usec; |
| 326 | }; |
| 327 | |
| 328 | struct pktgen_thread { |
| 329 | spinlock_t if_lock; |
| 330 | struct pktgen_dev *if_list; /* All device here */ |
| 331 | struct pktgen_thread* next; |
| 332 | char name[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | char result[512]; |
| 334 | u32 max_before_softirq; /* We'll call do_softirq to prevent starvation. */ |
| 335 | |
| 336 | /* Field for thread to receive "posted" events terminate, stop ifs etc.*/ |
| 337 | |
| 338 | u32 control; |
| 339 | int pid; |
| 340 | int cpu; |
| 341 | |
| 342 | wait_queue_head_t queue; |
| 343 | }; |
| 344 | |
| 345 | #define REMOVE 1 |
| 346 | #define FIND 0 |
| 347 | |
| 348 | /* This code works around the fact that do_div cannot handle two 64-bit |
| 349 | numbers, and regular 64-bit division doesn't work on x86 kernels. |
| 350 | --Ben |
| 351 | */ |
| 352 | |
| 353 | #define PG_DIV 0 |
| 354 | |
| 355 | /* This was emailed to LMKL by: Chris Caputo <ccaputo@alt.net> |
| 356 | * Function copied/adapted/optimized from: |
| 357 | * |
| 358 | * nemesis.sourceforge.net/browse/lib/static/intmath/ix86/intmath.c.html |
| 359 | * |
| 360 | * Copyright 1994, University of Cambridge Computer Laboratory |
| 361 | * All Rights Reserved. |
| 362 | * |
| 363 | */ |
Jesper Juhl | 77933d7 | 2005-07-27 11:46:09 -0700 | [diff] [blame] | 364 | static inline s64 divremdi3(s64 x, s64 y, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | { |
| 366 | u64 a = (x < 0) ? -x : x; |
| 367 | u64 b = (y < 0) ? -y : y; |
| 368 | u64 res = 0, d = 1; |
| 369 | |
| 370 | if (b > 0) { |
| 371 | while (b < a) { |
| 372 | b <<= 1; |
| 373 | d <<= 1; |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | do { |
| 378 | if ( a >= b ) { |
| 379 | a -= b; |
| 380 | res += d; |
| 381 | } |
| 382 | b >>= 1; |
| 383 | d >>= 1; |
| 384 | } |
| 385 | while (d); |
| 386 | |
| 387 | if (PG_DIV == type) { |
| 388 | return (((x ^ y) & (1ll<<63)) == 0) ? res : -(s64)res; |
| 389 | } |
| 390 | else { |
| 391 | return ((x & (1ll<<63)) == 0) ? a : -(s64)a; |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* End of hacks to deal with 64-bit math on x86 */ |
| 396 | |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 397 | /** Convert to milliseconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | static inline __u64 tv_to_ms(const struct timeval* tv) |
| 399 | { |
| 400 | __u64 ms = tv->tv_usec / 1000; |
| 401 | ms += (__u64)tv->tv_sec * (__u64)1000; |
| 402 | return ms; |
| 403 | } |
| 404 | |
| 405 | |
| 406 | /** Convert to micro-seconds */ |
| 407 | static inline __u64 tv_to_us(const struct timeval* tv) |
| 408 | { |
| 409 | __u64 us = tv->tv_usec; |
| 410 | us += (__u64)tv->tv_sec * (__u64)1000000; |
| 411 | return us; |
| 412 | } |
| 413 | |
| 414 | static inline __u64 pg_div(__u64 n, __u32 base) { |
| 415 | __u64 tmp = n; |
| 416 | do_div(tmp, base); |
| 417 | /* printk("pktgen: pg_div, n: %llu base: %d rv: %llu\n", |
| 418 | n, base, tmp); */ |
| 419 | return tmp; |
| 420 | } |
| 421 | |
| 422 | static inline __u64 pg_div64(__u64 n, __u64 base) |
| 423 | { |
| 424 | __u64 tmp = n; |
| 425 | /* |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 426 | * How do we know if the architecture we are running on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | * supports division with 64 bit base? |
| 428 | * |
| 429 | */ |
| 430 | #if defined(__sparc_v9__) || defined(__powerpc64__) || defined(__alpha__) || defined(__x86_64__) || defined(__ia64__) |
| 431 | |
| 432 | do_div(tmp, base); |
| 433 | #else |
| 434 | tmp = divremdi3(n, base, PG_DIV); |
| 435 | #endif |
| 436 | return tmp; |
| 437 | } |
| 438 | |
| 439 | static inline u32 pktgen_random(void) |
| 440 | { |
| 441 | #if 0 |
| 442 | __u32 n; |
| 443 | get_random_bytes(&n, 4); |
| 444 | return n; |
| 445 | #else |
| 446 | return net_random(); |
| 447 | #endif |
| 448 | } |
| 449 | |
| 450 | static inline __u64 getCurMs(void) |
| 451 | { |
| 452 | struct timeval tv; |
| 453 | do_gettimeofday(&tv); |
| 454 | return tv_to_ms(&tv); |
| 455 | } |
| 456 | |
| 457 | static inline __u64 getCurUs(void) |
| 458 | { |
| 459 | struct timeval tv; |
| 460 | do_gettimeofday(&tv); |
| 461 | return tv_to_us(&tv); |
| 462 | } |
| 463 | |
| 464 | static inline __u64 tv_diff(const struct timeval* a, const struct timeval* b) |
| 465 | { |
| 466 | return tv_to_us(a) - tv_to_us(b); |
| 467 | } |
| 468 | |
| 469 | |
| 470 | /* old include end */ |
| 471 | |
| 472 | static char version[] __initdata = VERSION; |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | static int pktgen_remove_device(struct pktgen_thread* t, struct pktgen_dev *i); |
| 475 | static int pktgen_add_device(struct pktgen_thread* t, const char* ifname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread* t, const char* ifname); |
| 477 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
| 478 | static void pktgen_run_all_threads(void); |
| 479 | static void pktgen_stop_all_threads_ifs(void); |
| 480 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev); |
| 481 | static void pktgen_stop(struct pktgen_thread* t); |
| 482 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
| 483 | static struct pktgen_dev *pktgen_NN_threads(const char* dev_name, int remove); |
| 484 | static unsigned int scan_ip6(const char *s,char ip[16]); |
| 485 | static unsigned int fmt_ip6(char *s,const char ip[16]); |
| 486 | |
| 487 | /* Module parameters, defaults. */ |
| 488 | static int pg_count_d = 1000; /* 1000 pkts by default */ |
Jaco Kroon | f34fbb9 | 2005-12-22 12:51:46 -0800 | [diff] [blame] | 489 | static int pg_delay_d; |
| 490 | static int pg_clone_skb_d; |
| 491 | static int debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
Stephen Hemminger | b7c8921 | 2005-10-14 15:26:34 -0700 | [diff] [blame] | 493 | static DECLARE_MUTEX(pktgen_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | static struct pktgen_thread *pktgen_threads = NULL; |
| 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | static struct notifier_block pktgen_notifier_block = { |
| 497 | .notifier_call = pktgen_device_event, |
| 498 | }; |
| 499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | /* |
| 501 | * /proc handling functions |
| 502 | * |
| 503 | */ |
| 504 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 505 | static int pgctrl_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 507 | seq_puts(seq, VERSION); |
| 508 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 511 | static ssize_t pgctrl_write(struct file* file,const char __user * buf, |
| 512 | size_t count, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | int err = 0; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 515 | char data[128]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | if (!capable(CAP_NET_ADMIN)){ |
| 518 | err = -EPERM; |
| 519 | goto out; |
| 520 | } |
| 521 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 522 | if (count > sizeof(data)) |
| 523 | count = sizeof(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | if (copy_from_user(data, buf, count)) { |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 526 | err = -EFAULT; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 527 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } |
| 529 | data[count-1] = 0; /* Make string */ |
| 530 | |
| 531 | if (!strcmp(data, "stop")) |
| 532 | pktgen_stop_all_threads_ifs(); |
| 533 | |
| 534 | else if (!strcmp(data, "start")) |
| 535 | pktgen_run_all_threads(); |
| 536 | |
| 537 | else |
| 538 | printk("pktgen: Unknown command: %s\n", data); |
| 539 | |
| 540 | err = count; |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | out: |
| 543 | return err; |
| 544 | } |
| 545 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 546 | static int pgctrl_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 548 | return single_open(file, pgctrl_show, PDE(inode)->data); |
| 549 | } |
| 550 | |
| 551 | static struct file_operations pktgen_fops = { |
| 552 | .owner = THIS_MODULE, |
| 553 | .open = pgctrl_open, |
| 554 | .read = seq_read, |
| 555 | .llseek = seq_lseek, |
| 556 | .write = pgctrl_write, |
| 557 | .release = single_release, |
| 558 | }; |
| 559 | |
| 560 | static int pktgen_if_show(struct seq_file *seq, void *v) |
| 561 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | int i; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 563 | struct pktgen_dev *pkt_dev = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | __u64 sa; |
| 565 | __u64 stopped; |
| 566 | __u64 now = getCurUs(); |
| 567 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 568 | seq_printf(seq, "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", |
| 569 | (unsigned long long) pkt_dev->count, |
| 570 | pkt_dev->min_pkt_size, pkt_dev->max_pkt_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 572 | seq_printf(seq, " frags: %d delay: %u clone_skb: %d ifname: %s\n", |
| 573 | pkt_dev->nfrags, 1000*pkt_dev->delay_us+pkt_dev->delay_ns, pkt_dev->clone_skb, pkt_dev->ifname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 575 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, pkt_dev->lflow); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | |
| 578 | if(pkt_dev->flags & F_IPV6) { |
| 579 | char b1[128], b2[128], b3[128]; |
| 580 | fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr); |
| 581 | fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr); |
| 582 | fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 583 | seq_printf(seq, " saddr: %s min_saddr: %s max_saddr: %s\n", b1, b2, b3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr); |
| 586 | fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr); |
| 587 | fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 588 | seq_printf(seq, " daddr: %s min_daddr: %s max_daddr: %s\n", b1, b2, b3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
| 590 | } |
| 591 | else |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 592 | seq_printf(seq," dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n", |
| 593 | pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min, pkt_dev->src_max); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 595 | seq_puts(seq, " src_mac: "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | if ((pkt_dev->src_mac[0] == 0) && |
| 598 | (pkt_dev->src_mac[1] == 0) && |
| 599 | (pkt_dev->src_mac[2] == 0) && |
| 600 | (pkt_dev->src_mac[3] == 0) && |
| 601 | (pkt_dev->src_mac[4] == 0) && |
| 602 | (pkt_dev->src_mac[5] == 0)) |
| 603 | |
| 604 | for (i = 0; i < 6; i++) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 605 | seq_printf(seq, "%02X%s", pkt_dev->odev->dev_addr[i], i == 5 ? " " : ":"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
| 607 | else |
| 608 | for (i = 0; i < 6; i++) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 609 | seq_printf(seq, "%02X%s", pkt_dev->src_mac[i], i == 5 ? " " : ":"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 611 | seq_printf(seq, "dst_mac: "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | for (i = 0; i < 6; i++) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 613 | seq_printf(seq, "%02X%s", pkt_dev->dst_mac[i], i == 5 ? "\n" : ":"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 615 | seq_printf(seq, " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n", |
| 616 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, pkt_dev->udp_dst_min, |
| 617 | pkt_dev->udp_dst_max); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 619 | seq_printf(seq, " src_mac_count: %d dst_mac_count: %d \n Flags: ", |
| 620 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
| 622 | |
| 623 | if (pkt_dev->flags & F_IPV6) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 624 | seq_printf(seq, "IPV6 "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
| 626 | if (pkt_dev->flags & F_IPSRC_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 627 | seq_printf(seq, "IPSRC_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | if (pkt_dev->flags & F_IPDST_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 630 | seq_printf(seq, "IPDST_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
| 632 | if (pkt_dev->flags & F_TXSIZE_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 633 | seq_printf(seq, "TXSIZE_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | if (pkt_dev->flags & F_UDPSRC_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 636 | seq_printf(seq, "UDPSRC_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
| 638 | if (pkt_dev->flags & F_UDPDST_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 639 | seq_printf(seq, "UDPDST_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | |
| 641 | if (pkt_dev->flags & F_MACSRC_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 642 | seq_printf(seq, "MACSRC_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
| 644 | if (pkt_dev->flags & F_MACDST_RND) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 645 | seq_printf(seq, "MACDST_RND "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 648 | seq_puts(seq, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
| 650 | sa = pkt_dev->started_at; |
| 651 | stopped = pkt_dev->stopped_at; |
| 652 | if (pkt_dev->running) |
| 653 | stopped = now; /* not really stopped, more like last-running-at */ |
| 654 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 655 | seq_printf(seq, "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n", |
| 656 | (unsigned long long) pkt_dev->sofar, |
| 657 | (unsigned long long) pkt_dev->errors, |
| 658 | (unsigned long long) sa, |
| 659 | (unsigned long long) stopped, |
| 660 | (unsigned long long) pkt_dev->idle_acc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 662 | seq_printf(seq, " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", |
| 663 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
| 664 | pkt_dev->cur_src_mac_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
| 666 | if(pkt_dev->flags & F_IPV6) { |
| 667 | char b1[128], b2[128]; |
| 668 | fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr); |
| 669 | fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 670 | seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | } |
| 672 | else |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 673 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", |
| 674 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
| 676 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 677 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
| 678 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 680 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | if (pkt_dev->result[0]) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 683 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | else |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 685 | seq_printf(seq, "Result: Idle\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 687 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | |
| 691 | static int count_trail_chars(const char __user *user_buffer, unsigned int maxlen) |
| 692 | { |
| 693 | int i; |
| 694 | |
| 695 | for (i = 0; i < maxlen; i++) { |
| 696 | char c; |
| 697 | if (get_user(c, &user_buffer[i])) |
| 698 | return -EFAULT; |
| 699 | switch (c) { |
| 700 | case '\"': |
| 701 | case '\n': |
| 702 | case '\r': |
| 703 | case '\t': |
| 704 | case ' ': |
| 705 | case '=': |
| 706 | break; |
| 707 | default: |
| 708 | goto done; |
| 709 | }; |
| 710 | } |
| 711 | done: |
| 712 | return i; |
| 713 | } |
| 714 | |
| 715 | static unsigned long num_arg(const char __user *user_buffer, unsigned long maxlen, |
| 716 | unsigned long *num) |
| 717 | { |
| 718 | int i = 0; |
| 719 | *num = 0; |
| 720 | |
| 721 | for(; i < maxlen; i++) { |
| 722 | char c; |
| 723 | if (get_user(c, &user_buffer[i])) |
| 724 | return -EFAULT; |
| 725 | if ((c >= '0') && (c <= '9')) { |
| 726 | *num *= 10; |
| 727 | *num += c -'0'; |
| 728 | } else |
| 729 | break; |
| 730 | } |
| 731 | return i; |
| 732 | } |
| 733 | |
| 734 | static int strn_len(const char __user *user_buffer, unsigned int maxlen) |
| 735 | { |
| 736 | int i = 0; |
| 737 | |
| 738 | for(; i < maxlen; i++) { |
| 739 | char c; |
| 740 | if (get_user(c, &user_buffer[i])) |
| 741 | return -EFAULT; |
| 742 | switch (c) { |
| 743 | case '\"': |
| 744 | case '\n': |
| 745 | case '\r': |
| 746 | case '\t': |
| 747 | case ' ': |
| 748 | goto done_str; |
| 749 | break; |
| 750 | default: |
| 751 | break; |
| 752 | }; |
| 753 | } |
| 754 | done_str: |
| 755 | |
| 756 | return i; |
| 757 | } |
| 758 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 759 | static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer, |
| 760 | size_t count, loff_t *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 762 | struct seq_file *seq = (struct seq_file *) file->private_data; |
| 763 | struct pktgen_dev *pkt_dev = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | int i = 0, max, len; |
| 765 | char name[16], valstr[32]; |
| 766 | unsigned long value = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | char* pg_result = NULL; |
| 768 | int tmp = 0; |
| 769 | char buf[128]; |
| 770 | |
| 771 | pg_result = &(pkt_dev->result[0]); |
| 772 | |
| 773 | if (count < 1) { |
| 774 | printk("pktgen: wrong command format\n"); |
| 775 | return -EINVAL; |
| 776 | } |
| 777 | |
| 778 | max = count - i; |
| 779 | tmp = count_trail_chars(&user_buffer[i], max); |
| 780 | if (tmp < 0) { |
| 781 | printk("pktgen: illegal format\n"); |
| 782 | return tmp; |
| 783 | } |
| 784 | i += tmp; |
| 785 | |
| 786 | /* Read variable name */ |
| 787 | |
| 788 | len = strn_len(&user_buffer[i], sizeof(name) - 1); |
| 789 | if (len < 0) { return len; } |
| 790 | memset(name, 0, sizeof(name)); |
| 791 | if (copy_from_user(name, &user_buffer[i], len) ) |
| 792 | return -EFAULT; |
| 793 | i += len; |
| 794 | |
| 795 | max = count -i; |
| 796 | len = count_trail_chars(&user_buffer[i], max); |
| 797 | if (len < 0) |
| 798 | return len; |
| 799 | |
| 800 | i += len; |
| 801 | |
| 802 | if (debug) { |
| 803 | char tb[count + 1]; |
| 804 | if (copy_from_user(tb, user_buffer, count)) |
| 805 | return -EFAULT; |
| 806 | tb[count] = 0; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 807 | printk("pktgen: %s,%lu buffer -:%s:-\n", name, |
| 808 | (unsigned long) count, tb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | if (!strcmp(name, "min_pkt_size")) { |
| 812 | len = num_arg(&user_buffer[i], 10, &value); |
| 813 | if (len < 0) { return len; } |
| 814 | i += len; |
| 815 | if (value < 14+20+8) |
| 816 | value = 14+20+8; |
| 817 | if (value != pkt_dev->min_pkt_size) { |
| 818 | pkt_dev->min_pkt_size = value; |
| 819 | pkt_dev->cur_pkt_size = value; |
| 820 | } |
| 821 | sprintf(pg_result, "OK: min_pkt_size=%u", pkt_dev->min_pkt_size); |
| 822 | return count; |
| 823 | } |
| 824 | |
| 825 | if (!strcmp(name, "max_pkt_size")) { |
| 826 | len = num_arg(&user_buffer[i], 10, &value); |
| 827 | if (len < 0) { return len; } |
| 828 | i += len; |
| 829 | if (value < 14+20+8) |
| 830 | value = 14+20+8; |
| 831 | if (value != pkt_dev->max_pkt_size) { |
| 832 | pkt_dev->max_pkt_size = value; |
| 833 | pkt_dev->cur_pkt_size = value; |
| 834 | } |
| 835 | sprintf(pg_result, "OK: max_pkt_size=%u", pkt_dev->max_pkt_size); |
| 836 | return count; |
| 837 | } |
| 838 | |
| 839 | /* Shortcut for min = max */ |
| 840 | |
| 841 | if (!strcmp(name, "pkt_size")) { |
| 842 | len = num_arg(&user_buffer[i], 10, &value); |
| 843 | if (len < 0) { return len; } |
| 844 | i += len; |
| 845 | if (value < 14+20+8) |
| 846 | value = 14+20+8; |
| 847 | if (value != pkt_dev->min_pkt_size) { |
| 848 | pkt_dev->min_pkt_size = value; |
| 849 | pkt_dev->max_pkt_size = value; |
| 850 | pkt_dev->cur_pkt_size = value; |
| 851 | } |
| 852 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
| 853 | return count; |
| 854 | } |
| 855 | |
| 856 | if (!strcmp(name, "debug")) { |
| 857 | len = num_arg(&user_buffer[i], 10, &value); |
| 858 | if (len < 0) { return len; } |
| 859 | i += len; |
| 860 | debug = value; |
| 861 | sprintf(pg_result, "OK: debug=%u", debug); |
| 862 | return count; |
| 863 | } |
| 864 | |
| 865 | if (!strcmp(name, "frags")) { |
| 866 | len = num_arg(&user_buffer[i], 10, &value); |
| 867 | if (len < 0) { return len; } |
| 868 | i += len; |
| 869 | pkt_dev->nfrags = value; |
| 870 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); |
| 871 | return count; |
| 872 | } |
| 873 | if (!strcmp(name, "delay")) { |
| 874 | len = num_arg(&user_buffer[i], 10, &value); |
| 875 | if (len < 0) { return len; } |
| 876 | i += len; |
| 877 | if (value == 0x7FFFFFFF) { |
| 878 | pkt_dev->delay_us = 0x7FFFFFFF; |
| 879 | pkt_dev->delay_ns = 0; |
| 880 | } else { |
| 881 | pkt_dev->delay_us = value / 1000; |
| 882 | pkt_dev->delay_ns = value % 1000; |
| 883 | } |
| 884 | sprintf(pg_result, "OK: delay=%u", 1000*pkt_dev->delay_us+pkt_dev->delay_ns); |
| 885 | return count; |
| 886 | } |
| 887 | if (!strcmp(name, "udp_src_min")) { |
| 888 | len = num_arg(&user_buffer[i], 10, &value); |
| 889 | if (len < 0) { return len; } |
| 890 | i += len; |
| 891 | if (value != pkt_dev->udp_src_min) { |
| 892 | pkt_dev->udp_src_min = value; |
| 893 | pkt_dev->cur_udp_src = value; |
| 894 | } |
| 895 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
| 896 | return count; |
| 897 | } |
| 898 | if (!strcmp(name, "udp_dst_min")) { |
| 899 | len = num_arg(&user_buffer[i], 10, &value); |
| 900 | if (len < 0) { return len; } |
| 901 | i += len; |
| 902 | if (value != pkt_dev->udp_dst_min) { |
| 903 | pkt_dev->udp_dst_min = value; |
| 904 | pkt_dev->cur_udp_dst = value; |
| 905 | } |
| 906 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
| 907 | return count; |
| 908 | } |
| 909 | if (!strcmp(name, "udp_src_max")) { |
| 910 | len = num_arg(&user_buffer[i], 10, &value); |
| 911 | if (len < 0) { return len; } |
| 912 | i += len; |
| 913 | if (value != pkt_dev->udp_src_max) { |
| 914 | pkt_dev->udp_src_max = value; |
| 915 | pkt_dev->cur_udp_src = value; |
| 916 | } |
| 917 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
| 918 | return count; |
| 919 | } |
| 920 | if (!strcmp(name, "udp_dst_max")) { |
| 921 | len = num_arg(&user_buffer[i], 10, &value); |
| 922 | if (len < 0) { return len; } |
| 923 | i += len; |
| 924 | if (value != pkt_dev->udp_dst_max) { |
| 925 | pkt_dev->udp_dst_max = value; |
| 926 | pkt_dev->cur_udp_dst = value; |
| 927 | } |
| 928 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
| 929 | return count; |
| 930 | } |
| 931 | if (!strcmp(name, "clone_skb")) { |
| 932 | len = num_arg(&user_buffer[i], 10, &value); |
| 933 | if (len < 0) { return len; } |
| 934 | i += len; |
| 935 | pkt_dev->clone_skb = value; |
| 936 | |
| 937 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
| 938 | return count; |
| 939 | } |
| 940 | if (!strcmp(name, "count")) { |
| 941 | len = num_arg(&user_buffer[i], 10, &value); |
| 942 | if (len < 0) { return len; } |
| 943 | i += len; |
| 944 | pkt_dev->count = value; |
| 945 | sprintf(pg_result, "OK: count=%llu", |
| 946 | (unsigned long long) pkt_dev->count); |
| 947 | return count; |
| 948 | } |
| 949 | if (!strcmp(name, "src_mac_count")) { |
| 950 | len = num_arg(&user_buffer[i], 10, &value); |
| 951 | if (len < 0) { return len; } |
| 952 | i += len; |
| 953 | if (pkt_dev->src_mac_count != value) { |
| 954 | pkt_dev->src_mac_count = value; |
| 955 | pkt_dev->cur_src_mac_offset = 0; |
| 956 | } |
| 957 | sprintf(pg_result, "OK: src_mac_count=%d", pkt_dev->src_mac_count); |
| 958 | return count; |
| 959 | } |
| 960 | if (!strcmp(name, "dst_mac_count")) { |
| 961 | len = num_arg(&user_buffer[i], 10, &value); |
| 962 | if (len < 0) { return len; } |
| 963 | i += len; |
| 964 | if (pkt_dev->dst_mac_count != value) { |
| 965 | pkt_dev->dst_mac_count = value; |
| 966 | pkt_dev->cur_dst_mac_offset = 0; |
| 967 | } |
| 968 | sprintf(pg_result, "OK: dst_mac_count=%d", pkt_dev->dst_mac_count); |
| 969 | return count; |
| 970 | } |
| 971 | if (!strcmp(name, "flag")) { |
| 972 | char f[32]; |
| 973 | memset(f, 0, 32); |
| 974 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
| 975 | if (len < 0) { return len; } |
| 976 | if (copy_from_user(f, &user_buffer[i], len)) |
| 977 | return -EFAULT; |
| 978 | i += len; |
| 979 | if (strcmp(f, "IPSRC_RND") == 0) |
| 980 | pkt_dev->flags |= F_IPSRC_RND; |
| 981 | |
| 982 | else if (strcmp(f, "!IPSRC_RND") == 0) |
| 983 | pkt_dev->flags &= ~F_IPSRC_RND; |
| 984 | |
| 985 | else if (strcmp(f, "TXSIZE_RND") == 0) |
| 986 | pkt_dev->flags |= F_TXSIZE_RND; |
| 987 | |
| 988 | else if (strcmp(f, "!TXSIZE_RND") == 0) |
| 989 | pkt_dev->flags &= ~F_TXSIZE_RND; |
| 990 | |
| 991 | else if (strcmp(f, "IPDST_RND") == 0) |
| 992 | pkt_dev->flags |= F_IPDST_RND; |
| 993 | |
| 994 | else if (strcmp(f, "!IPDST_RND") == 0) |
| 995 | pkt_dev->flags &= ~F_IPDST_RND; |
| 996 | |
| 997 | else if (strcmp(f, "UDPSRC_RND") == 0) |
| 998 | pkt_dev->flags |= F_UDPSRC_RND; |
| 999 | |
| 1000 | else if (strcmp(f, "!UDPSRC_RND") == 0) |
| 1001 | pkt_dev->flags &= ~F_UDPSRC_RND; |
| 1002 | |
| 1003 | else if (strcmp(f, "UDPDST_RND") == 0) |
| 1004 | pkt_dev->flags |= F_UDPDST_RND; |
| 1005 | |
| 1006 | else if (strcmp(f, "!UDPDST_RND") == 0) |
| 1007 | pkt_dev->flags &= ~F_UDPDST_RND; |
| 1008 | |
| 1009 | else if (strcmp(f, "MACSRC_RND") == 0) |
| 1010 | pkt_dev->flags |= F_MACSRC_RND; |
| 1011 | |
| 1012 | else if (strcmp(f, "!MACSRC_RND") == 0) |
| 1013 | pkt_dev->flags &= ~F_MACSRC_RND; |
| 1014 | |
| 1015 | else if (strcmp(f, "MACDST_RND") == 0) |
| 1016 | pkt_dev->flags |= F_MACDST_RND; |
| 1017 | |
| 1018 | else if (strcmp(f, "!MACDST_RND") == 0) |
| 1019 | pkt_dev->flags &= ~F_MACDST_RND; |
| 1020 | |
| 1021 | else { |
| 1022 | sprintf(pg_result, "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", |
| 1023 | f, |
| 1024 | "IPSRC_RND, IPDST_RND, TXSIZE_RND, UDPSRC_RND, UDPDST_RND, MACSRC_RND, MACDST_RND\n"); |
| 1025 | return count; |
| 1026 | } |
| 1027 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
| 1028 | return count; |
| 1029 | } |
| 1030 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { |
| 1031 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); |
| 1032 | if (len < 0) { return len; } |
| 1033 | |
| 1034 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1035 | return -EFAULT; |
| 1036 | buf[len] = 0; |
| 1037 | if (strcmp(buf, pkt_dev->dst_min) != 0) { |
| 1038 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); |
| 1039 | strncpy(pkt_dev->dst_min, buf, len); |
| 1040 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); |
| 1041 | pkt_dev->cur_daddr = pkt_dev->daddr_min; |
| 1042 | } |
| 1043 | if(debug) |
| 1044 | printk("pktgen: dst_min set to: %s\n", pkt_dev->dst_min); |
| 1045 | i += len; |
| 1046 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
| 1047 | return count; |
| 1048 | } |
| 1049 | if (!strcmp(name, "dst_max")) { |
| 1050 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); |
| 1051 | if (len < 0) { return len; } |
| 1052 | |
| 1053 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1054 | return -EFAULT; |
| 1055 | |
| 1056 | buf[len] = 0; |
| 1057 | if (strcmp(buf, pkt_dev->dst_max) != 0) { |
| 1058 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); |
| 1059 | strncpy(pkt_dev->dst_max, buf, len); |
| 1060 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); |
| 1061 | pkt_dev->cur_daddr = pkt_dev->daddr_max; |
| 1062 | } |
| 1063 | if(debug) |
| 1064 | printk("pktgen: dst_max set to: %s\n", pkt_dev->dst_max); |
| 1065 | i += len; |
| 1066 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); |
| 1067 | return count; |
| 1068 | } |
| 1069 | if (!strcmp(name, "dst6")) { |
| 1070 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); |
| 1071 | if (len < 0) return len; |
| 1072 | |
| 1073 | pkt_dev->flags |= F_IPV6; |
| 1074 | |
| 1075 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1076 | return -EFAULT; |
| 1077 | buf[len] = 0; |
| 1078 | |
| 1079 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); |
| 1080 | fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr); |
| 1081 | |
| 1082 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); |
| 1083 | |
| 1084 | if(debug) |
| 1085 | printk("pktgen: dst6 set to: %s\n", buf); |
| 1086 | |
| 1087 | i += len; |
| 1088 | sprintf(pg_result, "OK: dst6=%s", buf); |
| 1089 | return count; |
| 1090 | } |
| 1091 | if (!strcmp(name, "dst6_min")) { |
| 1092 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); |
| 1093 | if (len < 0) return len; |
| 1094 | |
| 1095 | pkt_dev->flags |= F_IPV6; |
| 1096 | |
| 1097 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1098 | return -EFAULT; |
| 1099 | buf[len] = 0; |
| 1100 | |
| 1101 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); |
| 1102 | fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); |
| 1103 | |
| 1104 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->min_in6_daddr); |
| 1105 | if(debug) |
| 1106 | printk("pktgen: dst6_min set to: %s\n", buf); |
| 1107 | |
| 1108 | i += len; |
| 1109 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
| 1110 | return count; |
| 1111 | } |
| 1112 | if (!strcmp(name, "dst6_max")) { |
| 1113 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); |
| 1114 | if (len < 0) return len; |
| 1115 | |
| 1116 | pkt_dev->flags |= F_IPV6; |
| 1117 | |
| 1118 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1119 | return -EFAULT; |
| 1120 | buf[len] = 0; |
| 1121 | |
| 1122 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); |
| 1123 | fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); |
| 1124 | |
| 1125 | if(debug) |
| 1126 | printk("pktgen: dst6_max set to: %s\n", buf); |
| 1127 | |
| 1128 | i += len; |
| 1129 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
| 1130 | return count; |
| 1131 | } |
| 1132 | if (!strcmp(name, "src6")) { |
| 1133 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); |
| 1134 | if (len < 0) return len; |
| 1135 | |
| 1136 | pkt_dev->flags |= F_IPV6; |
| 1137 | |
| 1138 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1139 | return -EFAULT; |
| 1140 | buf[len] = 0; |
| 1141 | |
| 1142 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); |
| 1143 | fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr); |
| 1144 | |
| 1145 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); |
| 1146 | |
| 1147 | if(debug) |
| 1148 | printk("pktgen: src6 set to: %s\n", buf); |
| 1149 | |
| 1150 | i += len; |
| 1151 | sprintf(pg_result, "OK: src6=%s", buf); |
| 1152 | return count; |
| 1153 | } |
| 1154 | if (!strcmp(name, "src_min")) { |
| 1155 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); |
| 1156 | if (len < 0) { return len; } |
| 1157 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1158 | return -EFAULT; |
| 1159 | buf[len] = 0; |
| 1160 | if (strcmp(buf, pkt_dev->src_min) != 0) { |
| 1161 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); |
| 1162 | strncpy(pkt_dev->src_min, buf, len); |
| 1163 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
| 1164 | pkt_dev->cur_saddr = pkt_dev->saddr_min; |
| 1165 | } |
| 1166 | if(debug) |
| 1167 | printk("pktgen: src_min set to: %s\n", pkt_dev->src_min); |
| 1168 | i += len; |
| 1169 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); |
| 1170 | return count; |
| 1171 | } |
| 1172 | if (!strcmp(name, "src_max")) { |
| 1173 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); |
| 1174 | if (len < 0) { return len; } |
| 1175 | if (copy_from_user(buf, &user_buffer[i], len)) |
| 1176 | return -EFAULT; |
| 1177 | buf[len] = 0; |
| 1178 | if (strcmp(buf, pkt_dev->src_max) != 0) { |
| 1179 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); |
| 1180 | strncpy(pkt_dev->src_max, buf, len); |
| 1181 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); |
| 1182 | pkt_dev->cur_saddr = pkt_dev->saddr_max; |
| 1183 | } |
| 1184 | if(debug) |
| 1185 | printk("pktgen: src_max set to: %s\n", pkt_dev->src_max); |
| 1186 | i += len; |
| 1187 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); |
| 1188 | return count; |
| 1189 | } |
| 1190 | if (!strcmp(name, "dst_mac")) { |
| 1191 | char *v = valstr; |
| 1192 | unsigned char old_dmac[6]; |
| 1193 | unsigned char *m = pkt_dev->dst_mac; |
| 1194 | memcpy(old_dmac, pkt_dev->dst_mac, 6); |
| 1195 | |
| 1196 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
| 1197 | if (len < 0) { return len; } |
| 1198 | memset(valstr, 0, sizeof(valstr)); |
| 1199 | if( copy_from_user(valstr, &user_buffer[i], len)) |
| 1200 | return -EFAULT; |
| 1201 | i += len; |
| 1202 | |
| 1203 | for(*m = 0;*v && m < pkt_dev->dst_mac + 6; v++) { |
| 1204 | if (*v >= '0' && *v <= '9') { |
| 1205 | *m *= 16; |
| 1206 | *m += *v - '0'; |
| 1207 | } |
| 1208 | if (*v >= 'A' && *v <= 'F') { |
| 1209 | *m *= 16; |
| 1210 | *m += *v - 'A' + 10; |
| 1211 | } |
| 1212 | if (*v >= 'a' && *v <= 'f') { |
| 1213 | *m *= 16; |
| 1214 | *m += *v - 'a' + 10; |
| 1215 | } |
| 1216 | if (*v == ':') { |
| 1217 | m++; |
| 1218 | *m = 0; |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | /* Set up Dest MAC */ |
| 1223 | if (memcmp(old_dmac, pkt_dev->dst_mac, 6) != 0) |
| 1224 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, 6); |
| 1225 | |
| 1226 | sprintf(pg_result, "OK: dstmac"); |
| 1227 | return count; |
| 1228 | } |
| 1229 | if (!strcmp(name, "src_mac")) { |
| 1230 | char *v = valstr; |
| 1231 | unsigned char *m = pkt_dev->src_mac; |
| 1232 | |
| 1233 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
| 1234 | if (len < 0) { return len; } |
| 1235 | memset(valstr, 0, sizeof(valstr)); |
| 1236 | if( copy_from_user(valstr, &user_buffer[i], len)) |
| 1237 | return -EFAULT; |
| 1238 | i += len; |
| 1239 | |
| 1240 | for(*m = 0;*v && m < pkt_dev->src_mac + 6; v++) { |
| 1241 | if (*v >= '0' && *v <= '9') { |
| 1242 | *m *= 16; |
| 1243 | *m += *v - '0'; |
| 1244 | } |
| 1245 | if (*v >= 'A' && *v <= 'F') { |
| 1246 | *m *= 16; |
| 1247 | *m += *v - 'A' + 10; |
| 1248 | } |
| 1249 | if (*v >= 'a' && *v <= 'f') { |
| 1250 | *m *= 16; |
| 1251 | *m += *v - 'a' + 10; |
| 1252 | } |
| 1253 | if (*v == ':') { |
| 1254 | m++; |
| 1255 | *m = 0; |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | sprintf(pg_result, "OK: srcmac"); |
| 1260 | return count; |
| 1261 | } |
| 1262 | |
| 1263 | if (!strcmp(name, "clear_counters")) { |
| 1264 | pktgen_clear_counters(pkt_dev); |
| 1265 | sprintf(pg_result, "OK: Clearing counters.\n"); |
| 1266 | return count; |
| 1267 | } |
| 1268 | |
| 1269 | if (!strcmp(name, "flows")) { |
| 1270 | len = num_arg(&user_buffer[i], 10, &value); |
| 1271 | if (len < 0) { return len; } |
| 1272 | i += len; |
| 1273 | if (value > MAX_CFLOWS) |
| 1274 | value = MAX_CFLOWS; |
| 1275 | |
| 1276 | pkt_dev->cflows = value; |
| 1277 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); |
| 1278 | return count; |
| 1279 | } |
| 1280 | |
| 1281 | if (!strcmp(name, "flowlen")) { |
| 1282 | len = num_arg(&user_buffer[i], 10, &value); |
| 1283 | if (len < 0) { return len; } |
| 1284 | i += len; |
| 1285 | pkt_dev->lflow = value; |
| 1286 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); |
| 1287 | return count; |
| 1288 | } |
| 1289 | |
| 1290 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
| 1291 | return -EINVAL; |
| 1292 | } |
| 1293 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1294 | static int pktgen_if_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1296 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
| 1297 | } |
| 1298 | |
| 1299 | static struct file_operations pktgen_if_fops = { |
| 1300 | .owner = THIS_MODULE, |
| 1301 | .open = pktgen_if_open, |
| 1302 | .read = seq_read, |
| 1303 | .llseek = seq_lseek, |
| 1304 | .write = pktgen_if_write, |
| 1305 | .release = single_release, |
| 1306 | }; |
| 1307 | |
| 1308 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
| 1309 | { |
| 1310 | struct pktgen_thread *t = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | struct pktgen_dev *pkt_dev = NULL; |
| 1312 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1313 | BUG_ON(!t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1315 | seq_printf(seq, "Name: %s max_before_softirq: %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | t->name, t->max_before_softirq); |
| 1317 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1318 | seq_printf(seq, "Running: "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | |
| 1320 | if_lock(t); |
| 1321 | for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) |
| 1322 | if(pkt_dev->running) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1323 | seq_printf(seq, "%s ", pkt_dev->ifname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1325 | seq_printf(seq, "\nStopped: "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | |
| 1327 | for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) |
| 1328 | if(!pkt_dev->running) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1329 | seq_printf(seq, "%s ", pkt_dev->ifname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | |
| 1331 | if (t->result[0]) |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1332 | seq_printf(seq, "\nResult: %s\n", t->result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | else |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1334 | seq_printf(seq, "\nResult: NA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
| 1336 | if_unlock(t); |
| 1337 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1338 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
| 1340 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1341 | static ssize_t pktgen_thread_write(struct file *file, |
| 1342 | const char __user *user_buffer, |
| 1343 | size_t count, loff_t *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1345 | struct seq_file *seq = (struct seq_file *) file->private_data; |
| 1346 | struct pktgen_thread *t = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | int i = 0, max, len, ret; |
| 1348 | char name[40]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | char *pg_result; |
| 1350 | unsigned long value = 0; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | if (count < 1) { |
| 1353 | // sprintf(pg_result, "Wrong command format"); |
| 1354 | return -EINVAL; |
| 1355 | } |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | max = count - i; |
| 1358 | len = count_trail_chars(&user_buffer[i], max); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1359 | if (len < 0) |
| 1360 | return len; |
| 1361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | i += len; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | /* Read variable name */ |
| 1365 | |
| 1366 | len = strn_len(&user_buffer[i], sizeof(name) - 1); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1367 | if (len < 0) |
| 1368 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | |
| 1370 | memset(name, 0, sizeof(name)); |
| 1371 | if (copy_from_user(name, &user_buffer[i], len)) |
| 1372 | return -EFAULT; |
| 1373 | i += len; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | max = count -i; |
| 1376 | len = count_trail_chars(&user_buffer[i], max); |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1377 | if (len < 0) |
| 1378 | return len; |
| 1379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | i += len; |
| 1381 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1382 | if (debug) |
| 1383 | printk("pktgen: t=%s, count=%lu\n", name, |
| 1384 | (unsigned long) count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | if(!t) { |
| 1387 | printk("pktgen: ERROR: No thread\n"); |
| 1388 | ret = -EINVAL; |
| 1389 | goto out; |
| 1390 | } |
| 1391 | |
| 1392 | pg_result = &(t->result[0]); |
| 1393 | |
| 1394 | if (!strcmp(name, "add_device")) { |
| 1395 | char f[32]; |
| 1396 | memset(f, 0, 32); |
| 1397 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
| 1398 | if (len < 0) { |
| 1399 | ret = len; |
| 1400 | goto out; |
| 1401 | } |
| 1402 | if( copy_from_user(f, &user_buffer[i], len) ) |
| 1403 | return -EFAULT; |
| 1404 | i += len; |
| 1405 | thread_lock(); |
| 1406 | pktgen_add_device(t, f); |
| 1407 | thread_unlock(); |
| 1408 | ret = count; |
| 1409 | sprintf(pg_result, "OK: add_device=%s", f); |
| 1410 | goto out; |
| 1411 | } |
| 1412 | |
| 1413 | if (!strcmp(name, "rem_device_all")) { |
| 1414 | thread_lock(); |
| 1415 | t->control |= T_REMDEV; |
| 1416 | thread_unlock(); |
Nishanth Aravamudan | 121caf5 | 2005-09-12 14:15:34 -0700 | [diff] [blame] | 1417 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | ret = count; |
| 1419 | sprintf(pg_result, "OK: rem_device_all"); |
| 1420 | goto out; |
| 1421 | } |
| 1422 | |
| 1423 | if (!strcmp(name, "max_before_softirq")) { |
| 1424 | len = num_arg(&user_buffer[i], 10, &value); |
| 1425 | thread_lock(); |
| 1426 | t->max_before_softirq = value; |
| 1427 | thread_unlock(); |
| 1428 | ret = count; |
| 1429 | sprintf(pg_result, "OK: max_before_softirq=%lu", value); |
| 1430 | goto out; |
| 1431 | } |
| 1432 | |
| 1433 | ret = -EINVAL; |
| 1434 | out: |
| 1435 | |
| 1436 | return ret; |
| 1437 | } |
| 1438 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1439 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1441 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | } |
| 1443 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 1444 | static struct file_operations pktgen_thread_fops = { |
| 1445 | .owner = THIS_MODULE, |
| 1446 | .open = pktgen_thread_open, |
| 1447 | .read = seq_read, |
| 1448 | .llseek = seq_lseek, |
| 1449 | .write = pktgen_thread_write, |
| 1450 | .release = single_release, |
| 1451 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | |
| 1453 | /* Think find or remove for NN */ |
| 1454 | static struct pktgen_dev *__pktgen_NN_threads(const char* ifname, int remove) |
| 1455 | { |
| 1456 | struct pktgen_thread *t; |
| 1457 | struct pktgen_dev *pkt_dev = NULL; |
| 1458 | |
| 1459 | t = pktgen_threads; |
| 1460 | |
| 1461 | while (t) { |
| 1462 | pkt_dev = pktgen_find_dev(t, ifname); |
| 1463 | if (pkt_dev) { |
| 1464 | if(remove) { |
| 1465 | if_lock(t); |
| 1466 | pktgen_remove_device(t, pkt_dev); |
| 1467 | if_unlock(t); |
| 1468 | } |
| 1469 | break; |
| 1470 | } |
| 1471 | t = t->next; |
| 1472 | } |
| 1473 | return pkt_dev; |
| 1474 | } |
| 1475 | |
| 1476 | static struct pktgen_dev *pktgen_NN_threads(const char* ifname, int remove) |
| 1477 | { |
| 1478 | struct pktgen_dev *pkt_dev = NULL; |
| 1479 | thread_lock(); |
| 1480 | pkt_dev = __pktgen_NN_threads(ifname, remove); |
| 1481 | thread_unlock(); |
| 1482 | return pkt_dev; |
| 1483 | } |
| 1484 | |
| 1485 | static int pktgen_device_event(struct notifier_block *unused, unsigned long event, void *ptr) |
| 1486 | { |
| 1487 | struct net_device *dev = (struct net_device *)(ptr); |
| 1488 | |
| 1489 | /* It is OK that we do not hold the group lock right now, |
| 1490 | * as we run under the RTNL lock. |
| 1491 | */ |
| 1492 | |
| 1493 | switch (event) { |
| 1494 | case NETDEV_CHANGEADDR: |
| 1495 | case NETDEV_GOING_DOWN: |
| 1496 | case NETDEV_DOWN: |
| 1497 | case NETDEV_UP: |
| 1498 | /* Ignore for now */ |
| 1499 | break; |
| 1500 | |
| 1501 | case NETDEV_UNREGISTER: |
| 1502 | pktgen_NN_threads(dev->name, REMOVE); |
| 1503 | break; |
| 1504 | }; |
| 1505 | |
| 1506 | return NOTIFY_DONE; |
| 1507 | } |
| 1508 | |
| 1509 | /* Associate pktgen_dev with a device. */ |
| 1510 | |
| 1511 | static struct net_device* pktgen_setup_dev(struct pktgen_dev *pkt_dev) { |
| 1512 | struct net_device *odev; |
| 1513 | |
| 1514 | /* Clean old setups */ |
| 1515 | |
| 1516 | if (pkt_dev->odev) { |
| 1517 | dev_put(pkt_dev->odev); |
| 1518 | pkt_dev->odev = NULL; |
| 1519 | } |
| 1520 | |
| 1521 | odev = dev_get_by_name(pkt_dev->ifname); |
| 1522 | |
| 1523 | if (!odev) { |
| 1524 | printk("pktgen: no such netdevice: \"%s\"\n", pkt_dev->ifname); |
| 1525 | goto out; |
| 1526 | } |
| 1527 | if (odev->type != ARPHRD_ETHER) { |
| 1528 | printk("pktgen: not an ethernet device: \"%s\"\n", pkt_dev->ifname); |
| 1529 | goto out_put; |
| 1530 | } |
| 1531 | if (!netif_running(odev)) { |
| 1532 | printk("pktgen: device is down: \"%s\"\n", pkt_dev->ifname); |
| 1533 | goto out_put; |
| 1534 | } |
| 1535 | pkt_dev->odev = odev; |
| 1536 | |
| 1537 | return pkt_dev->odev; |
| 1538 | |
| 1539 | out_put: |
| 1540 | dev_put(odev); |
| 1541 | out: |
| 1542 | return NULL; |
| 1543 | |
| 1544 | } |
| 1545 | |
| 1546 | /* Read pkt_dev from the interface and set up internal pktgen_dev |
| 1547 | * structure to have the right information to create/send packets |
| 1548 | */ |
| 1549 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) |
| 1550 | { |
| 1551 | /* Try once more, just in case it works now. */ |
| 1552 | if (!pkt_dev->odev) |
| 1553 | pktgen_setup_dev(pkt_dev); |
| 1554 | |
| 1555 | if (!pkt_dev->odev) { |
| 1556 | printk("pktgen: ERROR: pkt_dev->odev == NULL in setup_inject.\n"); |
| 1557 | sprintf(pkt_dev->result, "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); |
| 1558 | return; |
| 1559 | } |
| 1560 | |
| 1561 | /* Default to the interface's mac if not explicitly set. */ |
| 1562 | |
| 1563 | if ((pkt_dev->src_mac[0] == 0) && |
| 1564 | (pkt_dev->src_mac[1] == 0) && |
| 1565 | (pkt_dev->src_mac[2] == 0) && |
| 1566 | (pkt_dev->src_mac[3] == 0) && |
| 1567 | (pkt_dev->src_mac[4] == 0) && |
| 1568 | (pkt_dev->src_mac[5] == 0)) { |
| 1569 | |
| 1570 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, 6); |
| 1571 | } |
| 1572 | /* Set up Dest MAC */ |
| 1573 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, 6); |
| 1574 | |
| 1575 | /* Set up pkt size */ |
| 1576 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
| 1577 | |
| 1578 | if(pkt_dev->flags & F_IPV6) { |
| 1579 | /* |
| 1580 | * Skip this automatic address setting until locks or functions |
| 1581 | * gets exported |
| 1582 | */ |
| 1583 | |
| 1584 | #ifdef NOTNOW |
| 1585 | int i, set = 0, err=1; |
| 1586 | struct inet6_dev *idev; |
| 1587 | |
| 1588 | for(i=0; i< IN6_ADDR_HSIZE; i++) |
| 1589 | if(pkt_dev->cur_in6_saddr.s6_addr[i]) { |
| 1590 | set = 1; |
| 1591 | break; |
| 1592 | } |
| 1593 | |
| 1594 | if(!set) { |
| 1595 | |
| 1596 | /* |
| 1597 | * Use linklevel address if unconfigured. |
| 1598 | * |
| 1599 | * use ipv6_get_lladdr if/when it's get exported |
| 1600 | */ |
| 1601 | |
| 1602 | |
| 1603 | read_lock(&addrconf_lock); |
| 1604 | if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) { |
| 1605 | struct inet6_ifaddr *ifp; |
| 1606 | |
| 1607 | read_lock_bh(&idev->lock); |
| 1608 | for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) { |
| 1609 | if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) { |
| 1610 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &ifp->addr); |
| 1611 | err = 0; |
| 1612 | break; |
| 1613 | } |
| 1614 | } |
| 1615 | read_unlock_bh(&idev->lock); |
| 1616 | } |
| 1617 | read_unlock(&addrconf_lock); |
| 1618 | if(err) printk("pktgen: ERROR: IPv6 link address not availble.\n"); |
| 1619 | } |
| 1620 | #endif |
| 1621 | } |
| 1622 | else { |
| 1623 | pkt_dev->saddr_min = 0; |
| 1624 | pkt_dev->saddr_max = 0; |
| 1625 | if (strlen(pkt_dev->src_min) == 0) { |
| 1626 | |
| 1627 | struct in_device *in_dev; |
| 1628 | |
| 1629 | rcu_read_lock(); |
Herbert Xu | e5ed639 | 2005-10-03 14:35:55 -0700 | [diff] [blame] | 1630 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | if (in_dev) { |
| 1632 | if (in_dev->ifa_list) { |
| 1633 | pkt_dev->saddr_min = in_dev->ifa_list->ifa_address; |
| 1634 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
| 1635 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | } |
| 1637 | rcu_read_unlock(); |
| 1638 | } |
| 1639 | else { |
| 1640 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
| 1641 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); |
| 1642 | } |
| 1643 | |
| 1644 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); |
| 1645 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); |
| 1646 | } |
| 1647 | /* Initialize current values. */ |
| 1648 | pkt_dev->cur_dst_mac_offset = 0; |
| 1649 | pkt_dev->cur_src_mac_offset = 0; |
| 1650 | pkt_dev->cur_saddr = pkt_dev->saddr_min; |
| 1651 | pkt_dev->cur_daddr = pkt_dev->daddr_min; |
| 1652 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
| 1653 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; |
| 1654 | pkt_dev->nflows = 0; |
| 1655 | } |
| 1656 | |
| 1657 | static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us) |
| 1658 | { |
| 1659 | __u64 start; |
| 1660 | __u64 now; |
| 1661 | |
| 1662 | start = now = getCurUs(); |
| 1663 | printk(KERN_INFO "sleeping for %d\n", (int)(spin_until_us - now)); |
| 1664 | while (now < spin_until_us) { |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 1665 | /* TODO: optimize sleeping behavior */ |
Nishanth Aravamudan | 121caf5 | 2005-09-12 14:15:34 -0700 | [diff] [blame] | 1666 | if (spin_until_us - now > jiffies_to_usecs(1)+1) |
| 1667 | schedule_timeout_interruptible(1); |
| 1668 | else if (spin_until_us - now > 100) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | do_softirq(); |
| 1670 | if (!pkt_dev->running) |
| 1671 | return; |
| 1672 | if (need_resched()) |
| 1673 | schedule(); |
| 1674 | } |
| 1675 | |
| 1676 | now = getCurUs(); |
| 1677 | } |
| 1678 | |
| 1679 | pkt_dev->idle_acc += now - start; |
| 1680 | } |
| 1681 | |
| 1682 | |
| 1683 | /* Increment/randomize headers according to flags and current values |
| 1684 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst |
| 1685 | */ |
| 1686 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) { |
| 1687 | __u32 imn; |
| 1688 | __u32 imx; |
| 1689 | int flow = 0; |
| 1690 | |
| 1691 | if(pkt_dev->cflows) { |
| 1692 | flow = pktgen_random() % pkt_dev->cflows; |
| 1693 | |
| 1694 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) |
| 1695 | pkt_dev->flows[flow].count = 0; |
| 1696 | } |
| 1697 | |
| 1698 | |
| 1699 | /* Deal with source MAC */ |
| 1700 | if (pkt_dev->src_mac_count > 1) { |
| 1701 | __u32 mc; |
| 1702 | __u32 tmp; |
| 1703 | |
| 1704 | if (pkt_dev->flags & F_MACSRC_RND) |
| 1705 | mc = pktgen_random() % (pkt_dev->src_mac_count); |
| 1706 | else { |
| 1707 | mc = pkt_dev->cur_src_mac_offset++; |
| 1708 | if (pkt_dev->cur_src_mac_offset > pkt_dev->src_mac_count) |
| 1709 | pkt_dev->cur_src_mac_offset = 0; |
| 1710 | } |
| 1711 | |
| 1712 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); |
| 1713 | pkt_dev->hh[11] = tmp; |
| 1714 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); |
| 1715 | pkt_dev->hh[10] = tmp; |
| 1716 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); |
| 1717 | pkt_dev->hh[9] = tmp; |
| 1718 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); |
| 1719 | pkt_dev->hh[8] = tmp; |
| 1720 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); |
| 1721 | pkt_dev->hh[7] = tmp; |
| 1722 | } |
| 1723 | |
| 1724 | /* Deal with Destination MAC */ |
| 1725 | if (pkt_dev->dst_mac_count > 1) { |
| 1726 | __u32 mc; |
| 1727 | __u32 tmp; |
| 1728 | |
| 1729 | if (pkt_dev->flags & F_MACDST_RND) |
| 1730 | mc = pktgen_random() % (pkt_dev->dst_mac_count); |
| 1731 | |
| 1732 | else { |
| 1733 | mc = pkt_dev->cur_dst_mac_offset++; |
| 1734 | if (pkt_dev->cur_dst_mac_offset > pkt_dev->dst_mac_count) { |
| 1735 | pkt_dev->cur_dst_mac_offset = 0; |
| 1736 | } |
| 1737 | } |
| 1738 | |
| 1739 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); |
| 1740 | pkt_dev->hh[5] = tmp; |
| 1741 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); |
| 1742 | pkt_dev->hh[4] = tmp; |
| 1743 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); |
| 1744 | pkt_dev->hh[3] = tmp; |
| 1745 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); |
| 1746 | pkt_dev->hh[2] = tmp; |
| 1747 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); |
| 1748 | pkt_dev->hh[1] = tmp; |
| 1749 | } |
| 1750 | |
| 1751 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
| 1752 | if (pkt_dev->flags & F_UDPSRC_RND) |
| 1753 | pkt_dev->cur_udp_src = ((pktgen_random() % (pkt_dev->udp_src_max - pkt_dev->udp_src_min)) + pkt_dev->udp_src_min); |
| 1754 | |
| 1755 | else { |
| 1756 | pkt_dev->cur_udp_src++; |
| 1757 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) |
| 1758 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; |
| 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { |
| 1763 | if (pkt_dev->flags & F_UDPDST_RND) { |
| 1764 | pkt_dev->cur_udp_dst = ((pktgen_random() % (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)) + pkt_dev->udp_dst_min); |
| 1765 | } |
| 1766 | else { |
| 1767 | pkt_dev->cur_udp_dst++; |
| 1768 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
| 1769 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
| 1770 | } |
| 1771 | } |
| 1772 | |
| 1773 | if (!(pkt_dev->flags & F_IPV6)) { |
| 1774 | |
| 1775 | if ((imn = ntohl(pkt_dev->saddr_min)) < (imx = ntohl(pkt_dev->saddr_max))) { |
| 1776 | __u32 t; |
| 1777 | if (pkt_dev->flags & F_IPSRC_RND) |
| 1778 | t = ((pktgen_random() % (imx - imn)) + imn); |
| 1779 | else { |
| 1780 | t = ntohl(pkt_dev->cur_saddr); |
| 1781 | t++; |
| 1782 | if (t > imx) { |
| 1783 | t = imn; |
| 1784 | } |
| 1785 | } |
| 1786 | pkt_dev->cur_saddr = htonl(t); |
| 1787 | } |
| 1788 | |
| 1789 | if (pkt_dev->cflows && pkt_dev->flows[flow].count != 0) { |
| 1790 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
| 1791 | } else { |
| 1792 | |
| 1793 | if ((imn = ntohl(pkt_dev->daddr_min)) < (imx = ntohl(pkt_dev->daddr_max))) { |
| 1794 | __u32 t; |
| 1795 | if (pkt_dev->flags & F_IPDST_RND) { |
| 1796 | |
| 1797 | t = ((pktgen_random() % (imx - imn)) + imn); |
| 1798 | t = htonl(t); |
| 1799 | |
| 1800 | while( LOOPBACK(t) || MULTICAST(t) || BADCLASS(t) || ZERONET(t) || LOCAL_MCAST(t) ) { |
| 1801 | t = ((pktgen_random() % (imx - imn)) + imn); |
| 1802 | t = htonl(t); |
| 1803 | } |
| 1804 | pkt_dev->cur_daddr = t; |
| 1805 | } |
| 1806 | |
| 1807 | else { |
| 1808 | t = ntohl(pkt_dev->cur_daddr); |
| 1809 | t++; |
| 1810 | if (t > imx) { |
| 1811 | t = imn; |
| 1812 | } |
| 1813 | pkt_dev->cur_daddr = htonl(t); |
| 1814 | } |
| 1815 | } |
| 1816 | if(pkt_dev->cflows) { |
| 1817 | pkt_dev->flows[flow].cur_daddr = pkt_dev->cur_daddr; |
| 1818 | pkt_dev->nflows++; |
| 1819 | } |
| 1820 | } |
| 1821 | } |
| 1822 | else /* IPV6 * */ |
| 1823 | { |
| 1824 | if(pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && |
| 1825 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && |
| 1826 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && |
| 1827 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0); |
| 1828 | else { |
| 1829 | int i; |
| 1830 | |
| 1831 | /* Only random destinations yet */ |
| 1832 | |
| 1833 | for(i=0; i < 4; i++) { |
| 1834 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
| 1835 | ((pktgen_random() | |
| 1836 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
| 1837 | pkt_dev->max_in6_daddr.s6_addr32[i]); |
| 1838 | } |
| 1839 | } |
| 1840 | } |
| 1841 | |
| 1842 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
| 1843 | __u32 t; |
| 1844 | if (pkt_dev->flags & F_TXSIZE_RND) { |
| 1845 | t = ((pktgen_random() % (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)) |
| 1846 | + pkt_dev->min_pkt_size); |
| 1847 | } |
| 1848 | else { |
| 1849 | t = pkt_dev->cur_pkt_size + 1; |
| 1850 | if (t > pkt_dev->max_pkt_size) |
| 1851 | t = pkt_dev->min_pkt_size; |
| 1852 | } |
| 1853 | pkt_dev->cur_pkt_size = t; |
| 1854 | } |
| 1855 | |
| 1856 | pkt_dev->flows[flow].count++; |
| 1857 | } |
| 1858 | |
| 1859 | |
| 1860 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
| 1861 | struct pktgen_dev *pkt_dev) |
| 1862 | { |
| 1863 | struct sk_buff *skb = NULL; |
| 1864 | __u8 *eth; |
| 1865 | struct udphdr *udph; |
| 1866 | int datalen, iplen; |
| 1867 | struct iphdr *iph; |
| 1868 | struct pktgen_hdr *pgh = NULL; |
| 1869 | |
Robert Olsson | 64053be | 2005-06-26 15:27:10 -0700 | [diff] [blame] | 1870 | /* Update any of the values, used when we're incrementing various |
| 1871 | * fields. |
| 1872 | */ |
| 1873 | mod_cur_headers(pkt_dev); |
| 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16, GFP_ATOMIC); |
| 1876 | if (!skb) { |
| 1877 | sprintf(pkt_dev->result, "No memory"); |
| 1878 | return NULL; |
| 1879 | } |
| 1880 | |
| 1881 | skb_reserve(skb, 16); |
| 1882 | |
| 1883 | /* Reserve for ethernet and IP header */ |
| 1884 | eth = (__u8 *) skb_push(skb, 14); |
| 1885 | iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr)); |
| 1886 | udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr)); |
| 1887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | memcpy(eth, pkt_dev->hh, 12); |
| 1889 | *(u16*)ð[12] = __constant_htons(ETH_P_IP); |
| 1890 | |
| 1891 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8; /* Eth + IPh + UDPh */ |
| 1892 | if (datalen < sizeof(struct pktgen_hdr)) |
| 1893 | datalen = sizeof(struct pktgen_hdr); |
| 1894 | |
| 1895 | udph->source = htons(pkt_dev->cur_udp_src); |
| 1896 | udph->dest = htons(pkt_dev->cur_udp_dst); |
| 1897 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
| 1898 | udph->check = 0; /* No checksum */ |
| 1899 | |
| 1900 | iph->ihl = 5; |
| 1901 | iph->version = 4; |
| 1902 | iph->ttl = 32; |
| 1903 | iph->tos = 0; |
| 1904 | iph->protocol = IPPROTO_UDP; /* UDP */ |
| 1905 | iph->saddr = pkt_dev->cur_saddr; |
| 1906 | iph->daddr = pkt_dev->cur_daddr; |
| 1907 | iph->frag_off = 0; |
| 1908 | iplen = 20 + 8 + datalen; |
| 1909 | iph->tot_len = htons(iplen); |
| 1910 | iph->check = 0; |
| 1911 | iph->check = ip_fast_csum((void *) iph, iph->ihl); |
| 1912 | skb->protocol = __constant_htons(ETH_P_IP); |
| 1913 | skb->mac.raw = ((u8 *)iph) - 14; |
| 1914 | skb->dev = odev; |
| 1915 | skb->pkt_type = PACKET_HOST; |
| 1916 | |
| 1917 | if (pkt_dev->nfrags <= 0) |
| 1918 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); |
| 1919 | else { |
| 1920 | int frags = pkt_dev->nfrags; |
| 1921 | int i; |
| 1922 | |
| 1923 | pgh = (struct pktgen_hdr*)(((char*)(udph)) + 8); |
| 1924 | |
| 1925 | if (frags > MAX_SKB_FRAGS) |
| 1926 | frags = MAX_SKB_FRAGS; |
| 1927 | if (datalen > frags*PAGE_SIZE) { |
| 1928 | skb_put(skb, datalen-frags*PAGE_SIZE); |
| 1929 | datalen = frags*PAGE_SIZE; |
| 1930 | } |
| 1931 | |
| 1932 | i = 0; |
| 1933 | while (datalen > 0) { |
| 1934 | struct page *page = alloc_pages(GFP_KERNEL, 0); |
| 1935 | skb_shinfo(skb)->frags[i].page = page; |
| 1936 | skb_shinfo(skb)->frags[i].page_offset = 0; |
| 1937 | skb_shinfo(skb)->frags[i].size = |
| 1938 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
| 1939 | datalen -= skb_shinfo(skb)->frags[i].size; |
| 1940 | skb->len += skb_shinfo(skb)->frags[i].size; |
| 1941 | skb->data_len += skb_shinfo(skb)->frags[i].size; |
| 1942 | i++; |
| 1943 | skb_shinfo(skb)->nr_frags = i; |
| 1944 | } |
| 1945 | |
| 1946 | while (i < frags) { |
| 1947 | int rem; |
| 1948 | |
| 1949 | if (i == 0) |
| 1950 | break; |
| 1951 | |
| 1952 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; |
| 1953 | if (rem == 0) |
| 1954 | break; |
| 1955 | |
| 1956 | skb_shinfo(skb)->frags[i - 1].size -= rem; |
| 1957 | |
| 1958 | skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1]; |
| 1959 | get_page(skb_shinfo(skb)->frags[i].page); |
| 1960 | skb_shinfo(skb)->frags[i].page = skb_shinfo(skb)->frags[i - 1].page; |
| 1961 | skb_shinfo(skb)->frags[i].page_offset += skb_shinfo(skb)->frags[i - 1].size; |
| 1962 | skb_shinfo(skb)->frags[i].size = rem; |
| 1963 | i++; |
| 1964 | skb_shinfo(skb)->nr_frags = i; |
| 1965 | } |
| 1966 | } |
| 1967 | |
| 1968 | /* Stamp the time, and sequence number, convert them to network byte order */ |
| 1969 | |
| 1970 | if (pgh) { |
| 1971 | struct timeval timestamp; |
| 1972 | |
| 1973 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); |
| 1974 | pgh->seq_num = htonl(pkt_dev->seq_num); |
| 1975 | |
| 1976 | do_gettimeofday(×tamp); |
| 1977 | pgh->tv_sec = htonl(timestamp.tv_sec); |
| 1978 | pgh->tv_usec = htonl(timestamp.tv_usec); |
| 1979 | } |
| 1980 | pkt_dev->seq_num++; |
| 1981 | |
| 1982 | return skb; |
| 1983 | } |
| 1984 | |
| 1985 | /* |
| 1986 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
| 1987 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
| 1988 | * |
| 1989 | * Slightly modified for kernel. |
| 1990 | * Should be candidate for net/ipv4/utils.c |
| 1991 | * --ro |
| 1992 | */ |
| 1993 | |
| 1994 | static unsigned int scan_ip6(const char *s,char ip[16]) |
| 1995 | { |
| 1996 | unsigned int i; |
| 1997 | unsigned int len=0; |
| 1998 | unsigned long u; |
| 1999 | char suffix[16]; |
| 2000 | unsigned int prefixlen=0; |
| 2001 | unsigned int suffixlen=0; |
| 2002 | __u32 tmp; |
| 2003 | |
| 2004 | for (i=0; i<16; i++) ip[i]=0; |
| 2005 | |
| 2006 | for (;;) { |
| 2007 | if (*s == ':') { |
| 2008 | len++; |
| 2009 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
| 2010 | s+=2; |
| 2011 | len++; |
| 2012 | break; |
| 2013 | } |
| 2014 | s++; |
| 2015 | } |
| 2016 | { |
| 2017 | char *tmp; |
| 2018 | u=simple_strtoul(s,&tmp,16); |
| 2019 | i=tmp-s; |
| 2020 | } |
| 2021 | |
| 2022 | if (!i) return 0; |
| 2023 | if (prefixlen==12 && s[i]=='.') { |
| 2024 | |
| 2025 | /* the last 4 bytes may be written as IPv4 address */ |
| 2026 | |
| 2027 | tmp = in_aton(s); |
| 2028 | memcpy((struct in_addr*)(ip+12), &tmp, sizeof(tmp)); |
| 2029 | return i+len; |
| 2030 | } |
| 2031 | ip[prefixlen++] = (u >> 8); |
| 2032 | ip[prefixlen++] = (u & 255); |
| 2033 | s += i; len += i; |
| 2034 | if (prefixlen==16) |
| 2035 | return len; |
| 2036 | } |
| 2037 | |
| 2038 | /* part 2, after "::" */ |
| 2039 | for (;;) { |
| 2040 | if (*s == ':') { |
| 2041 | if (suffixlen==0) |
| 2042 | break; |
| 2043 | s++; |
| 2044 | len++; |
| 2045 | } else if (suffixlen!=0) |
| 2046 | break; |
| 2047 | { |
| 2048 | char *tmp; |
| 2049 | u=simple_strtol(s,&tmp,16); |
| 2050 | i=tmp-s; |
| 2051 | } |
| 2052 | if (!i) { |
| 2053 | if (*s) len--; |
| 2054 | break; |
| 2055 | } |
| 2056 | if (suffixlen+prefixlen<=12 && s[i]=='.') { |
| 2057 | tmp = in_aton(s); |
| 2058 | memcpy((struct in_addr*)(suffix+suffixlen), &tmp, sizeof(tmp)); |
| 2059 | suffixlen+=4; |
| 2060 | len+=strlen(s); |
| 2061 | break; |
| 2062 | } |
| 2063 | suffix[suffixlen++] = (u >> 8); |
| 2064 | suffix[suffixlen++] = (u & 255); |
| 2065 | s += i; len += i; |
| 2066 | if (prefixlen+suffixlen==16) |
| 2067 | break; |
| 2068 | } |
| 2069 | for (i=0; i<suffixlen; i++) |
| 2070 | ip[16-suffixlen+i] = suffix[i]; |
| 2071 | return len; |
| 2072 | } |
| 2073 | |
| 2074 | static char tohex(char hexdigit) { |
| 2075 | return hexdigit>9?hexdigit+'a'-10:hexdigit+'0'; |
| 2076 | } |
| 2077 | |
| 2078 | static int fmt_xlong(char* s,unsigned int i) { |
| 2079 | char* bak=s; |
| 2080 | *s=tohex((i>>12)&0xf); if (s!=bak || *s!='0') ++s; |
| 2081 | *s=tohex((i>>8)&0xf); if (s!=bak || *s!='0') ++s; |
| 2082 | *s=tohex((i>>4)&0xf); if (s!=bak || *s!='0') ++s; |
| 2083 | *s=tohex(i&0xf); |
| 2084 | return s-bak+1; |
| 2085 | } |
| 2086 | |
| 2087 | static unsigned int fmt_ip6(char *s,const char ip[16]) { |
| 2088 | unsigned int len; |
| 2089 | unsigned int i; |
| 2090 | unsigned int temp; |
| 2091 | unsigned int compressing; |
| 2092 | int j; |
| 2093 | |
| 2094 | len = 0; compressing = 0; |
| 2095 | for (j=0; j<16; j+=2) { |
| 2096 | |
| 2097 | #ifdef V4MAPPEDPREFIX |
| 2098 | if (j==12 && !memcmp(ip,V4mappedprefix,12)) { |
| 2099 | inet_ntoa_r(*(struct in_addr*)(ip+12),s); |
| 2100 | temp=strlen(s); |
| 2101 | return len+temp; |
| 2102 | } |
| 2103 | #endif |
| 2104 | temp = ((unsigned long) (unsigned char) ip[j] << 8) + |
| 2105 | (unsigned long) (unsigned char) ip[j+1]; |
| 2106 | if (temp == 0) { |
| 2107 | if (!compressing) { |
| 2108 | compressing=1; |
| 2109 | if (j==0) { |
| 2110 | *s++=':'; ++len; |
| 2111 | } |
| 2112 | } |
| 2113 | } else { |
| 2114 | if (compressing) { |
| 2115 | compressing=0; |
| 2116 | *s++=':'; ++len; |
| 2117 | } |
| 2118 | i = fmt_xlong(s,temp); len += i; s += i; |
| 2119 | if (j<14) { |
| 2120 | *s++ = ':'; |
| 2121 | ++len; |
| 2122 | } |
| 2123 | } |
| 2124 | } |
| 2125 | if (compressing) { |
| 2126 | *s++=':'; ++len; |
| 2127 | } |
| 2128 | *s=0; |
| 2129 | return len; |
| 2130 | } |
| 2131 | |
| 2132 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
| 2133 | struct pktgen_dev *pkt_dev) |
| 2134 | { |
| 2135 | struct sk_buff *skb = NULL; |
| 2136 | __u8 *eth; |
| 2137 | struct udphdr *udph; |
| 2138 | int datalen; |
| 2139 | struct ipv6hdr *iph; |
| 2140 | struct pktgen_hdr *pgh = NULL; |
Robert Olsson | 64053be | 2005-06-26 15:27:10 -0700 | [diff] [blame] | 2141 | |
| 2142 | /* Update any of the values, used when we're incrementing various |
| 2143 | * fields. |
| 2144 | */ |
| 2145 | mod_cur_headers(pkt_dev); |
| 2146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16, GFP_ATOMIC); |
| 2148 | if (!skb) { |
| 2149 | sprintf(pkt_dev->result, "No memory"); |
| 2150 | return NULL; |
| 2151 | } |
| 2152 | |
| 2153 | skb_reserve(skb, 16); |
| 2154 | |
| 2155 | /* Reserve for ethernet and IP header */ |
| 2156 | eth = (__u8 *) skb_push(skb, 14); |
| 2157 | iph = (struct ipv6hdr *)skb_put(skb, sizeof(struct ipv6hdr)); |
| 2158 | udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr)); |
| 2159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | memcpy(eth, pkt_dev->hh, 12); |
| 2161 | *(u16*)ð[12] = __constant_htons(ETH_P_IPV6); |
Robert Olsson | 64053be | 2005-06-26 15:27:10 -0700 | [diff] [blame] | 2162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | datalen = pkt_dev->cur_pkt_size-14- |
| 2164 | sizeof(struct ipv6hdr)-sizeof(struct udphdr); /* Eth + IPh + UDPh */ |
| 2165 | |
| 2166 | if (datalen < sizeof(struct pktgen_hdr)) { |
| 2167 | datalen = sizeof(struct pktgen_hdr); |
| 2168 | if (net_ratelimit()) |
| 2169 | printk(KERN_INFO "pktgen: increased datalen to %d\n", datalen); |
| 2170 | } |
| 2171 | |
| 2172 | udph->source = htons(pkt_dev->cur_udp_src); |
| 2173 | udph->dest = htons(pkt_dev->cur_udp_dst); |
| 2174 | udph->len = htons(datalen + sizeof(struct udphdr)); |
| 2175 | udph->check = 0; /* No checksum */ |
| 2176 | |
| 2177 | *(u32*)iph = __constant_htonl(0x60000000); /* Version + flow */ |
| 2178 | |
| 2179 | iph->hop_limit = 32; |
| 2180 | |
| 2181 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); |
| 2182 | iph->nexthdr = IPPROTO_UDP; |
| 2183 | |
| 2184 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); |
| 2185 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); |
| 2186 | |
| 2187 | skb->mac.raw = ((u8 *)iph) - 14; |
| 2188 | skb->protocol = __constant_htons(ETH_P_IPV6); |
| 2189 | skb->dev = odev; |
| 2190 | skb->pkt_type = PACKET_HOST; |
| 2191 | |
| 2192 | if (pkt_dev->nfrags <= 0) |
| 2193 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); |
| 2194 | else { |
| 2195 | int frags = pkt_dev->nfrags; |
| 2196 | int i; |
| 2197 | |
| 2198 | pgh = (struct pktgen_hdr*)(((char*)(udph)) + 8); |
| 2199 | |
| 2200 | if (frags > MAX_SKB_FRAGS) |
| 2201 | frags = MAX_SKB_FRAGS; |
| 2202 | if (datalen > frags*PAGE_SIZE) { |
| 2203 | skb_put(skb, datalen-frags*PAGE_SIZE); |
| 2204 | datalen = frags*PAGE_SIZE; |
| 2205 | } |
| 2206 | |
| 2207 | i = 0; |
| 2208 | while (datalen > 0) { |
| 2209 | struct page *page = alloc_pages(GFP_KERNEL, 0); |
| 2210 | skb_shinfo(skb)->frags[i].page = page; |
| 2211 | skb_shinfo(skb)->frags[i].page_offset = 0; |
| 2212 | skb_shinfo(skb)->frags[i].size = |
| 2213 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
| 2214 | datalen -= skb_shinfo(skb)->frags[i].size; |
| 2215 | skb->len += skb_shinfo(skb)->frags[i].size; |
| 2216 | skb->data_len += skb_shinfo(skb)->frags[i].size; |
| 2217 | i++; |
| 2218 | skb_shinfo(skb)->nr_frags = i; |
| 2219 | } |
| 2220 | |
| 2221 | while (i < frags) { |
| 2222 | int rem; |
| 2223 | |
| 2224 | if (i == 0) |
| 2225 | break; |
| 2226 | |
| 2227 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; |
| 2228 | if (rem == 0) |
| 2229 | break; |
| 2230 | |
| 2231 | skb_shinfo(skb)->frags[i - 1].size -= rem; |
| 2232 | |
| 2233 | skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1]; |
| 2234 | get_page(skb_shinfo(skb)->frags[i].page); |
| 2235 | skb_shinfo(skb)->frags[i].page = skb_shinfo(skb)->frags[i - 1].page; |
| 2236 | skb_shinfo(skb)->frags[i].page_offset += skb_shinfo(skb)->frags[i - 1].size; |
| 2237 | skb_shinfo(skb)->frags[i].size = rem; |
| 2238 | i++; |
| 2239 | skb_shinfo(skb)->nr_frags = i; |
| 2240 | } |
| 2241 | } |
| 2242 | |
| 2243 | /* Stamp the time, and sequence number, convert them to network byte order */ |
| 2244 | /* should we update cloned packets too ? */ |
| 2245 | if (pgh) { |
| 2246 | struct timeval timestamp; |
| 2247 | |
| 2248 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); |
| 2249 | pgh->seq_num = htonl(pkt_dev->seq_num); |
| 2250 | |
| 2251 | do_gettimeofday(×tamp); |
| 2252 | pgh->tv_sec = htonl(timestamp.tv_sec); |
| 2253 | pgh->tv_usec = htonl(timestamp.tv_usec); |
| 2254 | } |
| 2255 | pkt_dev->seq_num++; |
| 2256 | |
| 2257 | return skb; |
| 2258 | } |
| 2259 | |
| 2260 | static inline struct sk_buff *fill_packet(struct net_device *odev, |
| 2261 | struct pktgen_dev *pkt_dev) |
| 2262 | { |
| 2263 | if(pkt_dev->flags & F_IPV6) |
| 2264 | return fill_packet_ipv6(odev, pkt_dev); |
| 2265 | else |
| 2266 | return fill_packet_ipv4(odev, pkt_dev); |
| 2267 | } |
| 2268 | |
| 2269 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
| 2270 | { |
| 2271 | pkt_dev->seq_num = 1; |
| 2272 | pkt_dev->idle_acc = 0; |
| 2273 | pkt_dev->sofar = 0; |
| 2274 | pkt_dev->tx_bytes = 0; |
| 2275 | pkt_dev->errors = 0; |
| 2276 | } |
| 2277 | |
| 2278 | /* Set up structure for sending pkts, clear counters */ |
| 2279 | |
| 2280 | static void pktgen_run(struct pktgen_thread *t) |
| 2281 | { |
| 2282 | struct pktgen_dev *pkt_dev = NULL; |
| 2283 | int started = 0; |
| 2284 | |
| 2285 | PG_DEBUG(printk("pktgen: entering pktgen_run. %p\n", t)); |
| 2286 | |
| 2287 | if_lock(t); |
| 2288 | for (pkt_dev = t->if_list; pkt_dev; pkt_dev = pkt_dev->next ) { |
| 2289 | |
| 2290 | /* |
| 2291 | * setup odev and create initial packet. |
| 2292 | */ |
| 2293 | pktgen_setup_inject(pkt_dev); |
| 2294 | |
| 2295 | if(pkt_dev->odev) { |
| 2296 | pktgen_clear_counters(pkt_dev); |
| 2297 | pkt_dev->running = 1; /* Cranke yeself! */ |
| 2298 | pkt_dev->skb = NULL; |
| 2299 | pkt_dev->started_at = getCurUs(); |
| 2300 | pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */ |
| 2301 | pkt_dev->next_tx_ns = 0; |
| 2302 | |
| 2303 | strcpy(pkt_dev->result, "Starting"); |
| 2304 | started++; |
| 2305 | } |
| 2306 | else |
| 2307 | strcpy(pkt_dev->result, "Error starting"); |
| 2308 | } |
| 2309 | if_unlock(t); |
| 2310 | if(started) t->control &= ~(T_STOP); |
| 2311 | } |
| 2312 | |
| 2313 | static void pktgen_stop_all_threads_ifs(void) |
| 2314 | { |
| 2315 | struct pktgen_thread *t = pktgen_threads; |
| 2316 | |
| 2317 | PG_DEBUG(printk("pktgen: entering pktgen_stop_all_threads.\n")); |
| 2318 | |
| 2319 | thread_lock(); |
| 2320 | while(t) { |
| 2321 | pktgen_stop(t); |
| 2322 | t = t->next; |
| 2323 | } |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 2324 | thread_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | } |
| 2326 | |
| 2327 | static int thread_is_running(struct pktgen_thread *t ) |
| 2328 | { |
| 2329 | struct pktgen_dev *next; |
| 2330 | int res = 0; |
| 2331 | |
| 2332 | for(next=t->if_list; next; next=next->next) { |
| 2333 | if(next->running) { |
| 2334 | res = 1; |
| 2335 | break; |
| 2336 | } |
| 2337 | } |
| 2338 | return res; |
| 2339 | } |
| 2340 | |
| 2341 | static int pktgen_wait_thread_run(struct pktgen_thread *t ) |
| 2342 | { |
| 2343 | if_lock(t); |
| 2344 | |
| 2345 | while(thread_is_running(t)) { |
| 2346 | |
| 2347 | if_unlock(t); |
| 2348 | |
| 2349 | msleep_interruptible(100); |
| 2350 | |
| 2351 | if (signal_pending(current)) |
| 2352 | goto signal; |
| 2353 | if_lock(t); |
| 2354 | } |
| 2355 | if_unlock(t); |
| 2356 | return 1; |
| 2357 | signal: |
| 2358 | return 0; |
| 2359 | } |
| 2360 | |
| 2361 | static int pktgen_wait_all_threads_run(void) |
| 2362 | { |
| 2363 | struct pktgen_thread *t = pktgen_threads; |
| 2364 | int sig = 1; |
| 2365 | |
| 2366 | while (t) { |
| 2367 | sig = pktgen_wait_thread_run(t); |
| 2368 | if( sig == 0 ) break; |
| 2369 | thread_lock(); |
| 2370 | t=t->next; |
| 2371 | thread_unlock(); |
| 2372 | } |
| 2373 | if(sig == 0) { |
| 2374 | thread_lock(); |
| 2375 | while (t) { |
| 2376 | t->control |= (T_STOP); |
| 2377 | t=t->next; |
| 2378 | } |
| 2379 | thread_unlock(); |
| 2380 | } |
| 2381 | return sig; |
| 2382 | } |
| 2383 | |
| 2384 | static void pktgen_run_all_threads(void) |
| 2385 | { |
| 2386 | struct pktgen_thread *t = pktgen_threads; |
| 2387 | |
| 2388 | PG_DEBUG(printk("pktgen: entering pktgen_run_all_threads.\n")); |
| 2389 | |
| 2390 | thread_lock(); |
| 2391 | |
| 2392 | while(t) { |
| 2393 | t->control |= (T_RUN); |
| 2394 | t = t->next; |
| 2395 | } |
| 2396 | thread_unlock(); |
| 2397 | |
Nishanth Aravamudan | 121caf5 | 2005-09-12 14:15:34 -0700 | [diff] [blame] | 2398 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | |
| 2400 | pktgen_wait_all_threads_run(); |
| 2401 | } |
| 2402 | |
| 2403 | |
| 2404 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
| 2405 | { |
| 2406 | __u64 total_us, bps, mbps, pps, idle; |
| 2407 | char *p = pkt_dev->result; |
| 2408 | |
| 2409 | total_us = pkt_dev->stopped_at - pkt_dev->started_at; |
| 2410 | |
| 2411 | idle = pkt_dev->idle_acc; |
| 2412 | |
| 2413 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
| 2414 | (unsigned long long) total_us, |
| 2415 | (unsigned long long)(total_us - idle), |
| 2416 | (unsigned long long) idle, |
| 2417 | (unsigned long long) pkt_dev->sofar, |
| 2418 | pkt_dev->cur_pkt_size, nr_frags); |
| 2419 | |
| 2420 | pps = pkt_dev->sofar * USEC_PER_SEC; |
| 2421 | |
| 2422 | while ((total_us >> 32) != 0) { |
| 2423 | pps >>= 1; |
| 2424 | total_us >>= 1; |
| 2425 | } |
| 2426 | |
| 2427 | do_div(pps, total_us); |
| 2428 | |
| 2429 | bps = pps * 8 * pkt_dev->cur_pkt_size; |
| 2430 | |
| 2431 | mbps = bps; |
| 2432 | do_div(mbps, 1000000); |
| 2433 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", |
| 2434 | (unsigned long long) pps, |
| 2435 | (unsigned long long) mbps, |
| 2436 | (unsigned long long) bps, |
| 2437 | (unsigned long long) pkt_dev->errors); |
| 2438 | } |
| 2439 | |
| 2440 | |
| 2441 | /* Set stopped-at timer, remove from running list, do counters & statistics */ |
| 2442 | |
| 2443 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
| 2444 | { |
| 2445 | |
| 2446 | if (!pkt_dev->running) { |
| 2447 | printk("pktgen: interface: %s is already stopped\n", pkt_dev->ifname); |
| 2448 | return -EINVAL; |
| 2449 | } |
| 2450 | |
| 2451 | pkt_dev->stopped_at = getCurUs(); |
| 2452 | pkt_dev->running = 0; |
| 2453 | |
| 2454 | show_results(pkt_dev, skb_shinfo(pkt_dev->skb)->nr_frags); |
| 2455 | |
| 2456 | if (pkt_dev->skb) |
| 2457 | kfree_skb(pkt_dev->skb); |
| 2458 | |
| 2459 | pkt_dev->skb = NULL; |
| 2460 | |
| 2461 | return 0; |
| 2462 | } |
| 2463 | |
| 2464 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t ) |
| 2465 | { |
| 2466 | struct pktgen_dev *next, *best = NULL; |
| 2467 | |
| 2468 | if_lock(t); |
| 2469 | |
| 2470 | for(next=t->if_list; next ; next=next->next) { |
| 2471 | if(!next->running) continue; |
| 2472 | if(best == NULL) best=next; |
| 2473 | else if ( next->next_tx_us < best->next_tx_us) |
| 2474 | best = next; |
| 2475 | } |
| 2476 | if_unlock(t); |
| 2477 | return best; |
| 2478 | } |
| 2479 | |
| 2480 | static void pktgen_stop(struct pktgen_thread *t) { |
| 2481 | struct pktgen_dev *next = NULL; |
| 2482 | |
| 2483 | PG_DEBUG(printk("pktgen: entering pktgen_stop.\n")); |
| 2484 | |
| 2485 | if_lock(t); |
| 2486 | |
| 2487 | for(next=t->if_list; next; next=next->next) |
| 2488 | pktgen_stop_device(next); |
| 2489 | |
| 2490 | if_unlock(t); |
| 2491 | } |
| 2492 | |
| 2493 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
| 2494 | { |
| 2495 | struct pktgen_dev *cur, *next = NULL; |
| 2496 | |
| 2497 | /* Remove all devices, free mem */ |
| 2498 | |
| 2499 | if_lock(t); |
| 2500 | |
| 2501 | for(cur=t->if_list; cur; cur=next) { |
| 2502 | next = cur->next; |
| 2503 | pktgen_remove_device(t, cur); |
| 2504 | } |
| 2505 | |
| 2506 | if_unlock(t); |
| 2507 | } |
| 2508 | |
| 2509 | static void pktgen_rem_thread(struct pktgen_thread *t) |
| 2510 | { |
| 2511 | /* Remove from the thread list */ |
| 2512 | |
| 2513 | struct pktgen_thread *tmp = pktgen_threads; |
| 2514 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2515 | remove_proc_entry(t->name, pg_proc_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 2517 | thread_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | |
| 2519 | if (tmp == t) |
| 2520 | pktgen_threads = tmp->next; |
| 2521 | else { |
| 2522 | while (tmp) { |
| 2523 | if (tmp->next == t) { |
| 2524 | tmp->next = t->next; |
| 2525 | t->next = NULL; |
| 2526 | break; |
| 2527 | } |
| 2528 | tmp = tmp->next; |
| 2529 | } |
| 2530 | } |
| 2531 | thread_unlock(); |
| 2532 | } |
| 2533 | |
| 2534 | static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) |
| 2535 | { |
| 2536 | struct net_device *odev = NULL; |
| 2537 | __u64 idle_start = 0; |
| 2538 | int ret; |
| 2539 | |
| 2540 | odev = pkt_dev->odev; |
| 2541 | |
| 2542 | if (pkt_dev->delay_us || pkt_dev->delay_ns) { |
| 2543 | u64 now; |
| 2544 | |
| 2545 | now = getCurUs(); |
| 2546 | if (now < pkt_dev->next_tx_us) |
| 2547 | spin(pkt_dev, pkt_dev->next_tx_us); |
| 2548 | |
| 2549 | /* This is max DELAY, this has special meaning of |
| 2550 | * "never transmit" |
| 2551 | */ |
| 2552 | if (pkt_dev->delay_us == 0x7FFFFFFF) { |
| 2553 | pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us; |
| 2554 | pkt_dev->next_tx_ns = pkt_dev->delay_ns; |
| 2555 | goto out; |
| 2556 | } |
| 2557 | } |
| 2558 | |
| 2559 | if (netif_queue_stopped(odev) || need_resched()) { |
| 2560 | idle_start = getCurUs(); |
| 2561 | |
| 2562 | if (!netif_running(odev)) { |
| 2563 | pktgen_stop_device(pkt_dev); |
| 2564 | goto out; |
| 2565 | } |
| 2566 | if (need_resched()) |
| 2567 | schedule(); |
| 2568 | |
| 2569 | pkt_dev->idle_acc += getCurUs() - idle_start; |
| 2570 | |
| 2571 | if (netif_queue_stopped(odev)) { |
| 2572 | pkt_dev->next_tx_us = getCurUs(); /* TODO */ |
| 2573 | pkt_dev->next_tx_ns = 0; |
| 2574 | goto out; /* Try the next interface */ |
| 2575 | } |
| 2576 | } |
| 2577 | |
| 2578 | if (pkt_dev->last_ok || !pkt_dev->skb) { |
| 2579 | if ((++pkt_dev->clone_count >= pkt_dev->clone_skb ) || (!pkt_dev->skb)) { |
| 2580 | /* build a new pkt */ |
| 2581 | if (pkt_dev->skb) |
| 2582 | kfree_skb(pkt_dev->skb); |
| 2583 | |
| 2584 | pkt_dev->skb = fill_packet(odev, pkt_dev); |
| 2585 | if (pkt_dev->skb == NULL) { |
| 2586 | printk("pktgen: ERROR: couldn't allocate skb in fill_packet.\n"); |
| 2587 | schedule(); |
| 2588 | pkt_dev->clone_count--; /* back out increment, OOM */ |
| 2589 | goto out; |
| 2590 | } |
| 2591 | pkt_dev->allocated_skbs++; |
| 2592 | pkt_dev->clone_count = 0; /* reset counter */ |
| 2593 | } |
| 2594 | } |
| 2595 | |
| 2596 | spin_lock_bh(&odev->xmit_lock); |
| 2597 | if (!netif_queue_stopped(odev)) { |
| 2598 | |
| 2599 | atomic_inc(&(pkt_dev->skb->users)); |
| 2600 | retry_now: |
| 2601 | ret = odev->hard_start_xmit(pkt_dev->skb, odev); |
| 2602 | if (likely(ret == NETDEV_TX_OK)) { |
| 2603 | pkt_dev->last_ok = 1; |
| 2604 | pkt_dev->sofar++; |
| 2605 | pkt_dev->seq_num++; |
| 2606 | pkt_dev->tx_bytes += pkt_dev->cur_pkt_size; |
| 2607 | |
| 2608 | } else if (ret == NETDEV_TX_LOCKED |
| 2609 | && (odev->features & NETIF_F_LLTX)) { |
| 2610 | cpu_relax(); |
| 2611 | goto retry_now; |
| 2612 | } else { /* Retry it next time */ |
| 2613 | |
| 2614 | atomic_dec(&(pkt_dev->skb->users)); |
| 2615 | |
| 2616 | if (debug && net_ratelimit()) |
| 2617 | printk(KERN_INFO "pktgen: Hard xmit error\n"); |
| 2618 | |
| 2619 | pkt_dev->errors++; |
| 2620 | pkt_dev->last_ok = 0; |
| 2621 | } |
| 2622 | |
| 2623 | pkt_dev->next_tx_us = getCurUs(); |
| 2624 | pkt_dev->next_tx_ns = 0; |
| 2625 | |
| 2626 | pkt_dev->next_tx_us += pkt_dev->delay_us; |
| 2627 | pkt_dev->next_tx_ns += pkt_dev->delay_ns; |
| 2628 | |
| 2629 | if (pkt_dev->next_tx_ns > 1000) { |
| 2630 | pkt_dev->next_tx_us++; |
| 2631 | pkt_dev->next_tx_ns -= 1000; |
| 2632 | } |
| 2633 | } |
| 2634 | |
| 2635 | else { /* Retry it next time */ |
| 2636 | pkt_dev->last_ok = 0; |
| 2637 | pkt_dev->next_tx_us = getCurUs(); /* TODO */ |
| 2638 | pkt_dev->next_tx_ns = 0; |
| 2639 | } |
| 2640 | |
| 2641 | spin_unlock_bh(&odev->xmit_lock); |
| 2642 | |
| 2643 | /* If pkt_dev->count is zero, then run forever */ |
| 2644 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { |
| 2645 | if (atomic_read(&(pkt_dev->skb->users)) != 1) { |
| 2646 | idle_start = getCurUs(); |
| 2647 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
| 2648 | if (signal_pending(current)) { |
| 2649 | break; |
| 2650 | } |
| 2651 | schedule(); |
| 2652 | } |
| 2653 | pkt_dev->idle_acc += getCurUs() - idle_start; |
| 2654 | } |
| 2655 | |
| 2656 | /* Done with this */ |
| 2657 | pktgen_stop_device(pkt_dev); |
| 2658 | } |
| 2659 | out:; |
| 2660 | } |
| 2661 | |
| 2662 | /* |
| 2663 | * Main loop of the thread goes here |
| 2664 | */ |
| 2665 | |
| 2666 | static void pktgen_thread_worker(struct pktgen_thread *t) |
| 2667 | { |
| 2668 | DEFINE_WAIT(wait); |
| 2669 | struct pktgen_dev *pkt_dev = NULL; |
| 2670 | int cpu = t->cpu; |
| 2671 | sigset_t tmpsig; |
| 2672 | u32 max_before_softirq; |
| 2673 | u32 tx_since_softirq = 0; |
| 2674 | |
| 2675 | daemonize("pktgen/%d", cpu); |
| 2676 | |
| 2677 | /* Block all signals except SIGKILL, SIGSTOP and SIGTERM */ |
| 2678 | |
| 2679 | spin_lock_irq(¤t->sighand->siglock); |
| 2680 | tmpsig = current->blocked; |
| 2681 | siginitsetinv(¤t->blocked, |
| 2682 | sigmask(SIGKILL) | |
| 2683 | sigmask(SIGSTOP)| |
| 2684 | sigmask(SIGTERM)); |
| 2685 | |
| 2686 | recalc_sigpending(); |
| 2687 | spin_unlock_irq(¤t->sighand->siglock); |
| 2688 | |
| 2689 | /* Migrate to the right CPU */ |
| 2690 | set_cpus_allowed(current, cpumask_of_cpu(cpu)); |
| 2691 | if (smp_processor_id() != cpu) |
| 2692 | BUG(); |
| 2693 | |
| 2694 | init_waitqueue_head(&t->queue); |
| 2695 | |
| 2696 | t->control &= ~(T_TERMINATE); |
| 2697 | t->control &= ~(T_RUN); |
| 2698 | t->control &= ~(T_STOP); |
| 2699 | t->control &= ~(T_REMDEV); |
| 2700 | |
| 2701 | t->pid = current->pid; |
| 2702 | |
| 2703 | PG_DEBUG(printk("pktgen: starting pktgen/%d: pid=%d\n", cpu, current->pid)); |
| 2704 | |
| 2705 | max_before_softirq = t->max_before_softirq; |
| 2706 | |
| 2707 | __set_current_state(TASK_INTERRUPTIBLE); |
| 2708 | mb(); |
| 2709 | |
| 2710 | while (1) { |
| 2711 | |
| 2712 | __set_current_state(TASK_RUNNING); |
| 2713 | |
| 2714 | /* |
| 2715 | * Get next dev to xmit -- if any. |
| 2716 | */ |
| 2717 | |
| 2718 | pkt_dev = next_to_run(t); |
| 2719 | |
| 2720 | if (pkt_dev) { |
| 2721 | |
| 2722 | pktgen_xmit(pkt_dev); |
| 2723 | |
| 2724 | /* |
| 2725 | * We like to stay RUNNING but must also give |
| 2726 | * others fair share. |
| 2727 | */ |
| 2728 | |
| 2729 | tx_since_softirq += pkt_dev->last_ok; |
| 2730 | |
| 2731 | if (tx_since_softirq > max_before_softirq) { |
| 2732 | if (local_softirq_pending()) |
| 2733 | do_softirq(); |
| 2734 | tx_since_softirq = 0; |
| 2735 | } |
| 2736 | } else { |
| 2737 | prepare_to_wait(&(t->queue), &wait, TASK_INTERRUPTIBLE); |
| 2738 | schedule_timeout(HZ/10); |
| 2739 | finish_wait(&(t->queue), &wait); |
| 2740 | } |
| 2741 | |
| 2742 | /* |
| 2743 | * Back from sleep, either due to the timeout or signal. |
| 2744 | * We check if we have any "posted" work for us. |
| 2745 | */ |
| 2746 | |
| 2747 | if (t->control & T_TERMINATE || signal_pending(current)) |
| 2748 | /* we received a request to terminate ourself */ |
| 2749 | break; |
| 2750 | |
| 2751 | |
| 2752 | if(t->control & T_STOP) { |
| 2753 | pktgen_stop(t); |
| 2754 | t->control &= ~(T_STOP); |
| 2755 | } |
| 2756 | |
| 2757 | if(t->control & T_RUN) { |
| 2758 | pktgen_run(t); |
| 2759 | t->control &= ~(T_RUN); |
| 2760 | } |
| 2761 | |
| 2762 | if(t->control & T_REMDEV) { |
| 2763 | pktgen_rem_all_ifs(t); |
| 2764 | t->control &= ~(T_REMDEV); |
| 2765 | } |
| 2766 | |
| 2767 | if (need_resched()) |
| 2768 | schedule(); |
| 2769 | } |
| 2770 | |
| 2771 | PG_DEBUG(printk("pktgen: %s stopping all device\n", t->name)); |
| 2772 | pktgen_stop(t); |
| 2773 | |
| 2774 | PG_DEBUG(printk("pktgen: %s removing all device\n", t->name)); |
| 2775 | pktgen_rem_all_ifs(t); |
| 2776 | |
| 2777 | PG_DEBUG(printk("pktgen: %s removing thread.\n", t->name)); |
| 2778 | pktgen_rem_thread(t); |
| 2779 | } |
| 2780 | |
| 2781 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, const char* ifname) |
| 2782 | { |
| 2783 | struct pktgen_dev *pkt_dev = NULL; |
| 2784 | if_lock(t); |
| 2785 | |
| 2786 | for(pkt_dev=t->if_list; pkt_dev; pkt_dev = pkt_dev->next ) { |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2787 | if (strncmp(pkt_dev->ifname, ifname, IFNAMSIZ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | break; |
| 2789 | } |
| 2790 | } |
| 2791 | |
| 2792 | if_unlock(t); |
| 2793 | PG_DEBUG(printk("pktgen: find_dev(%s) returning %p\n", ifname,pkt_dev)); |
| 2794 | return pkt_dev; |
| 2795 | } |
| 2796 | |
| 2797 | /* |
| 2798 | * Adds a dev at front of if_list. |
| 2799 | */ |
| 2800 | |
| 2801 | static int add_dev_to_thread(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) |
| 2802 | { |
| 2803 | int rv = 0; |
| 2804 | |
| 2805 | if_lock(t); |
| 2806 | |
| 2807 | if (pkt_dev->pg_thread) { |
| 2808 | printk("pktgen: ERROR: already assigned to a thread.\n"); |
| 2809 | rv = -EBUSY; |
| 2810 | goto out; |
| 2811 | } |
| 2812 | pkt_dev->next =t->if_list; t->if_list=pkt_dev; |
| 2813 | pkt_dev->pg_thread = t; |
| 2814 | pkt_dev->running = 0; |
| 2815 | |
| 2816 | out: |
| 2817 | if_unlock(t); |
| 2818 | return rv; |
| 2819 | } |
| 2820 | |
| 2821 | /* Called under thread lock */ |
| 2822 | |
| 2823 | static int pktgen_add_device(struct pktgen_thread *t, const char* ifname) |
| 2824 | { |
| 2825 | struct pktgen_dev *pkt_dev; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2826 | struct proc_dir_entry *pe; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | |
| 2828 | /* We don't allow a device to be on several threads */ |
| 2829 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2830 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
| 2831 | if (pkt_dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | printk("pktgen: ERROR: interface already used.\n"); |
| 2833 | return -EBUSY; |
| 2834 | } |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2835 | |
| 2836 | pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL); |
| 2837 | if (!pkt_dev) |
| 2838 | return -ENOMEM; |
| 2839 | |
| 2840 | pkt_dev->flows = vmalloc(MAX_CFLOWS*sizeof(struct flow_state)); |
| 2841 | if (pkt_dev->flows == NULL) { |
| 2842 | kfree(pkt_dev); |
| 2843 | return -ENOMEM; |
| 2844 | } |
| 2845 | memset(pkt_dev->flows, 0, MAX_CFLOWS*sizeof(struct flow_state)); |
| 2846 | |
| 2847 | pkt_dev->min_pkt_size = ETH_ZLEN; |
| 2848 | pkt_dev->max_pkt_size = ETH_ZLEN; |
| 2849 | pkt_dev->nfrags = 0; |
| 2850 | pkt_dev->clone_skb = pg_clone_skb_d; |
| 2851 | pkt_dev->delay_us = pg_delay_d / 1000; |
| 2852 | pkt_dev->delay_ns = pg_delay_d % 1000; |
| 2853 | pkt_dev->count = pg_count_d; |
| 2854 | pkt_dev->sofar = 0; |
| 2855 | pkt_dev->udp_src_min = 9; /* sink port */ |
| 2856 | pkt_dev->udp_src_max = 9; |
| 2857 | pkt_dev->udp_dst_min = 9; |
| 2858 | pkt_dev->udp_dst_max = 9; |
| 2859 | |
| 2860 | strncpy(pkt_dev->ifname, ifname, IFNAMSIZ); |
| 2861 | |
| 2862 | if (! pktgen_setup_dev(pkt_dev)) { |
| 2863 | printk("pktgen: ERROR: pktgen_setup_dev failed.\n"); |
| 2864 | if (pkt_dev->flows) |
| 2865 | vfree(pkt_dev->flows); |
| 2866 | kfree(pkt_dev); |
| 2867 | return -ENODEV; |
| 2868 | } |
| 2869 | |
| 2870 | pe = create_proc_entry(ifname, 0600, pg_proc_dir); |
| 2871 | if (!pe) { |
| 2872 | printk("pktgen: cannot create %s/%s procfs entry.\n", |
| 2873 | PG_PROC_DIR, ifname); |
| 2874 | if (pkt_dev->flows) |
| 2875 | vfree(pkt_dev->flows); |
| 2876 | kfree(pkt_dev); |
| 2877 | return -EINVAL; |
| 2878 | } |
| 2879 | pe->proc_fops = &pktgen_if_fops; |
| 2880 | pe->data = pkt_dev; |
| 2881 | |
| 2882 | return add_dev_to_thread(t, pkt_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2883 | } |
| 2884 | |
Luiz Capitulino | 69549dd | 2006-01-06 13:19:31 -0800 | [diff] [blame] | 2885 | static struct pktgen_thread * __init pktgen_find_thread(const char* name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | { |
| 2887 | struct pktgen_thread *t = NULL; |
| 2888 | |
Stephen Hemminger | b4099fa | 2005-10-14 15:32:22 -0700 | [diff] [blame] | 2889 | thread_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | |
| 2891 | t = pktgen_threads; |
| 2892 | while (t) { |
| 2893 | if (strcmp(t->name, name) == 0) |
| 2894 | break; |
| 2895 | |
| 2896 | t = t->next; |
| 2897 | } |
| 2898 | thread_unlock(); |
| 2899 | return t; |
| 2900 | } |
| 2901 | |
Luiz Capitulino | 69549dd | 2006-01-06 13:19:31 -0800 | [diff] [blame] | 2902 | static int __init pktgen_create_thread(const char* name, int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | { |
| 2904 | struct pktgen_thread *t = NULL; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2905 | struct proc_dir_entry *pe; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | |
| 2907 | if (strlen(name) > 31) { |
| 2908 | printk("pktgen: ERROR: Thread name cannot be more than 31 characters.\n"); |
| 2909 | return -EINVAL; |
| 2910 | } |
| 2911 | |
| 2912 | if (pktgen_find_thread(name)) { |
| 2913 | printk("pktgen: ERROR: thread: %s already exists\n", name); |
| 2914 | return -EINVAL; |
| 2915 | } |
| 2916 | |
Stephen Hemminger | 2845b63b | 2005-10-14 15:29:48 -0700 | [diff] [blame] | 2917 | t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2918 | if (!t) { |
| 2919 | printk("pktgen: ERROR: out of memory, can't create new thread.\n"); |
| 2920 | return -ENOMEM; |
| 2921 | } |
| 2922 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2923 | strcpy(t->name, name); |
| 2924 | spin_lock_init(&t->if_lock); |
| 2925 | t->cpu = cpu; |
| 2926 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2927 | pe = create_proc_entry(t->name, 0600, pg_proc_dir); |
| 2928 | if (!pe) { |
| 2929 | printk("pktgen: cannot create %s/%s procfs entry.\n", |
| 2930 | PG_PROC_DIR, t->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | kfree(t); |
| 2932 | return -EINVAL; |
| 2933 | } |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2934 | |
| 2935 | pe->proc_fops = &pktgen_thread_fops; |
| 2936 | pe->data = t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | |
| 2938 | t->next = pktgen_threads; |
| 2939 | pktgen_threads = t; |
| 2940 | |
| 2941 | if (kernel_thread((void *) pktgen_thread_worker, (void *) t, |
| 2942 | CLONE_FS | CLONE_FILES | CLONE_SIGHAND) < 0) |
| 2943 | printk("pktgen: kernel_thread() failed for cpu %d\n", t->cpu); |
| 2944 | |
| 2945 | return 0; |
| 2946 | } |
| 2947 | |
| 2948 | /* |
| 2949 | * Removes a device from the thread if_list. |
| 2950 | */ |
| 2951 | static void _rem_dev_from_if_list(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) |
| 2952 | { |
| 2953 | struct pktgen_dev *i, *prev = NULL; |
| 2954 | |
| 2955 | i = t->if_list; |
| 2956 | |
| 2957 | while(i) { |
| 2958 | if(i == pkt_dev) { |
| 2959 | if(prev) prev->next = i->next; |
| 2960 | else t->if_list = NULL; |
| 2961 | break; |
| 2962 | } |
| 2963 | prev = i; |
| 2964 | i=i->next; |
| 2965 | } |
| 2966 | } |
| 2967 | |
| 2968 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) |
| 2969 | { |
| 2970 | |
| 2971 | PG_DEBUG(printk("pktgen: remove_device pkt_dev=%p\n", pkt_dev)); |
| 2972 | |
| 2973 | if (pkt_dev->running) { |
| 2974 | printk("pktgen:WARNING: trying to remove a running interface, stopping it now.\n"); |
| 2975 | pktgen_stop_device(pkt_dev); |
| 2976 | } |
| 2977 | |
| 2978 | /* Dis-associate from the interface */ |
| 2979 | |
| 2980 | if (pkt_dev->odev) { |
| 2981 | dev_put(pkt_dev->odev); |
| 2982 | pkt_dev->odev = NULL; |
| 2983 | } |
| 2984 | |
| 2985 | /* And update the thread if_list */ |
| 2986 | |
| 2987 | _rem_dev_from_if_list(t, pkt_dev); |
| 2988 | |
| 2989 | /* Clean up proc file system */ |
| 2990 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 2991 | remove_proc_entry(pkt_dev->ifname, pg_proc_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | |
| 2993 | if (pkt_dev->flows) |
| 2994 | vfree(pkt_dev->flows); |
| 2995 | kfree(pkt_dev); |
| 2996 | return 0; |
| 2997 | } |
| 2998 | |
| 2999 | static int __init pg_init(void) |
| 3000 | { |
| 3001 | int cpu; |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 3002 | struct proc_dir_entry *pe; |
| 3003 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3004 | printk(version); |
| 3005 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 3006 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, proc_net); |
| 3007 | if (!pg_proc_dir) |
| 3008 | return -ENODEV; |
| 3009 | pg_proc_dir->owner = THIS_MODULE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 3011 | pe = create_proc_entry(PGCTRL, 0600, pg_proc_dir); |
| 3012 | if (pe == NULL) { |
| 3013 | printk("pktgen: ERROR: cannot create %s procfs entry.\n", PGCTRL); |
| 3014 | proc_net_remove(PG_PROC_DIR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | return -EINVAL; |
| 3016 | } |
| 3017 | |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 3018 | pe->proc_fops = &pktgen_fops; |
| 3019 | pe->data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | |
| 3021 | /* Register us to receive netdevice events */ |
| 3022 | register_netdevice_notifier(&pktgen_notifier_block); |
| 3023 | |
John Hawkes | 670c02c | 2005-10-13 09:30:31 -0700 | [diff] [blame] | 3024 | for_each_online_cpu(cpu) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3025 | char buf[30]; |
| 3026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3027 | sprintf(buf, "kpktgend_%i", cpu); |
| 3028 | pktgen_create_thread(buf, cpu); |
| 3029 | } |
| 3030 | return 0; |
| 3031 | } |
| 3032 | |
| 3033 | static void __exit pg_cleanup(void) |
| 3034 | { |
| 3035 | wait_queue_head_t queue; |
| 3036 | init_waitqueue_head(&queue); |
| 3037 | |
| 3038 | /* Stop all interfaces & threads */ |
| 3039 | |
| 3040 | while (pktgen_threads) { |
| 3041 | struct pktgen_thread *t = pktgen_threads; |
| 3042 | pktgen_threads->control |= (T_TERMINATE); |
| 3043 | |
| 3044 | wait_event_interruptible_timeout(queue, (t != pktgen_threads), HZ); |
| 3045 | } |
| 3046 | |
| 3047 | /* Un-register us from receiving netdevice events */ |
| 3048 | unregister_netdevice_notifier(&pktgen_notifier_block); |
| 3049 | |
| 3050 | /* Clean up proc file system */ |
Stephen Hemminger | d50a6b56 | 2005-10-14 15:42:33 -0700 | [diff] [blame] | 3051 | remove_proc_entry(PGCTRL, pg_proc_dir); |
| 3052 | proc_net_remove(PG_PROC_DIR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3053 | } |
| 3054 | |
| 3055 | |
| 3056 | module_init(pg_init); |
| 3057 | module_exit(pg_cleanup); |
| 3058 | |
| 3059 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se"); |
| 3060 | MODULE_DESCRIPTION("Packet Generator tool"); |
| 3061 | MODULE_LICENSE("GPL"); |
| 3062 | module_param(pg_count_d, int, 0); |
| 3063 | module_param(pg_delay_d, int, 0); |
| 3064 | module_param(pg_clone_skb_d, int, 0); |
| 3065 | module_param(debug, int, 0); |