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pktgen: convert to use ktime_t
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CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4
LT		 117 */
118#include <linux/sys.h>
119#include <linux/types.h>
120#include <linux/module.h>
121#include <linux/moduleparam.h>
122#include <linux/kernel.h>
222fa076 123#include <linux/mutex.h>
1da177e4
LT		 124#include <linux/sched.h>
125#include <linux/slab.h>
126#include <linux/vmalloc.h>
1da177e4
LT		 127#include <linux/unistd.h>
128#include <linux/string.h>
129#include <linux/ptrace.h>
130#include <linux/errno.h>
131#include <linux/ioport.h>
132#include <linux/interrupt.h>
4fc268d2 133#include <linux/capability.h>
09fe3ef4 134#include <linux/freezer.h>
1da177e4
LT		 135#include <linux/delay.h>
136#include <linux/timer.h>
cdcdbe0b 137#include <linux/list.h>
1da177e4
LT		 138#include <linux/init.h>
139#include <linux/skbuff.h>
140#include <linux/netdevice.h>
141#include <linux/inet.h>
142#include <linux/inetdevice.h>
143#include <linux/rtnetlink.h>
144#include <linux/if_arp.h>
34954ddc 145#include <linux/if_vlan.h>
1da177e4
LT		 146#include <linux/in.h>
147#include <linux/ip.h>
148#include <linux/ipv6.h>
149#include <linux/udp.h>
150#include <linux/proc_fs.h>
d50a6b56 151#include <linux/seq_file.h>
1da177e4 152#include <linux/wait.h>
f404e9a6 153#include <linux/etherdevice.h>
ee74baa7 154#include <linux/kthread.h>
457c4cbc 155#include <net/net_namespace.h>
1da177e4
LT		 156#include <net/checksum.h>
157#include <net/ipv6.h>
158#include <net/addrconf.h>
a553e4a6
JHS		 159#ifdef CONFIG_XFRM
160#include <net/xfrm.h>
161#endif
1da177e4
LT		 162#include <asm/byteorder.h>
163#include <linux/rcupdate.h>
1977f032 164#include <linux/bitops.h>
1da177e4
LT		 165#include <asm/io.h>
166#include <asm/dma.h>
167#include <asm/uaccess.h>
222f1806 168#include <asm/div64.h> /* do_div */
1da177e4
LT		 169#include <asm/timex.h>
170
e6fce5b9 171#define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
1da177e4 172
1da177e4 173#define IP_NAME_SZ 32
ca6549af 174#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 175#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 176
177/* Device flag bits */
222f1806
LC		 178#define F_IPSRC_RND (1<<0) /* IP-Src Random */
179#define F_IPDST_RND (1<<1) /* IP-Dst Random */
180#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
181#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
182#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
183#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
184#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
185#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 186#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 187#define F_VID_RND (1<<9) /* Random VLAN ID */
188#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 189#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 190#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 191#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 192#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
1da177e4
LT		 193
194/* Thread control flag bits */
222f1806
LC		 195#define T_TERMINATE (1<<0)
196#define T_STOP (1<<1) /* Stop run */
197#define T_RUN (1<<2) /* Start run */
198#define T_REMDEVALL (1<<3) /* Remove all devs */
199#define T_REMDEV (1<<4) /* Remove one dev */
1da177e4 200
1da177e4
LT		 201/* If lock -- can be removed after some work */
202#define if_lock(t) spin_lock(&(t->if_lock));
203#define if_unlock(t) spin_unlock(&(t->if_lock));
204
205/* Used to help with determining the pkts on receive */
206#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 207#define PG_PROC_DIR "pktgen"
208#define PGCTRL "pgctrl"
209static struct proc_dir_entry *pg_proc_dir = NULL;
1da177e4
LT		 210
211#define MAX_CFLOWS 65536
212
34954ddc
FF		 213#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
214#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
215
222f1806 216struct flow_state {
252e3346 217 __be32 cur_daddr;
222f1806 218 int count;
a553e4a6
JHS		 219#ifdef CONFIG_XFRM
220 struct xfrm_state *x;
221#endif
007a531b 222 __u32 flags;
1da177e4
LT		 223};
224
007a531b
JHS		 225/* flow flag bits */
226#define F_INIT (1<<0) /* flow has been initialized */
227
1da177e4 228struct pktgen_dev {
1da177e4
LT		 229 /*
230 * Try to keep frequent/infrequent used vars. separated.
231 */
39df232f
SH		 232 struct proc_dir_entry *entry; /* proc file */
233 struct pktgen_thread *pg_thread;/* the owner */
c26a8016 234 struct list_head list; /* Used for chaining in the thread's run-queue */
1da177e4 235
222f1806 236 int running; /* if this changes to false, the test will stop */
1da177e4 237
222f1806
LC		 238 /* If min != max, then we will either do a linear iteration, or
239 * we will do a random selection from within the range.
240 */
241 __u32 flags;
95ed63f7
AK		 242 int removal_mark; /* non-zero => the device is marked for
243 * removal by worker thread */
1da177e4 244
222f1806
LC		 245 int min_pkt_size; /* = ETH_ZLEN; */
246 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 247 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 248 int nfrags;
fd29cf72
SH		 249 u64 delay; /* nano-seconds */
250
222f1806
LC		 251 __u64 count; /* Default No packets to send */
252 __u64 sofar; /* How many pkts we've sent so far */
253 __u64 tx_bytes; /* How many bytes we've transmitted */
254 __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
255
256 /* runtime counters relating to clone_skb */
222f1806
LC		 257
258 __u64 allocated_skbs;
259 __u32 clone_count;
260 int last_ok; /* Was last skb sent?
261 * Or a failed transmit of some sort? This will keep
262 * sequence numbers in order, for example.
263 */
fd29cf72
SH		 264 ktime_t next_tx;
265 ktime_t started_at;
266 ktime_t stopped_at;
267 u64 idle_acc; /* nano-seconds */
268
222f1806
LC		 269 __u32 seq_num;
270
271 int clone_skb; /* Use multiple SKBs during packet gen. If this number
272 * is greater than 1, then that many copies of the same
273 * packet will be sent before a new packet is allocated.
274 * For instance, if you want to send 1024 identical packets
275 * before creating a new packet, set clone_skb to 1024.
276 */
277
278 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
279 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
280 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
281 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282
283 struct in6_addr in6_saddr;
284 struct in6_addr in6_daddr;
285 struct in6_addr cur_in6_daddr;
286 struct in6_addr cur_in6_saddr;
1da177e4 287 /* For ranges */
222f1806
LC		 288 struct in6_addr min_in6_daddr;
289 struct in6_addr max_in6_daddr;
290 struct in6_addr min_in6_saddr;
291 struct in6_addr max_in6_saddr;
292
293 /* If we're doing ranges, random or incremental, then this
294 * defines the min/max for those ranges.
295 */
252e3346
AV		 296 __be32 saddr_min; /* inclusive, source IP address */
297 __be32 saddr_max; /* exclusive, source IP address */
298 __be32 daddr_min; /* inclusive, dest IP address */
299 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 300
301 __u16 udp_src_min; /* inclusive, source UDP port */
302 __u16 udp_src_max; /* exclusive, source UDP port */
303 __u16 udp_dst_min; /* inclusive, dest UDP port */
304 __u16 udp_dst_max; /* exclusive, dest UDP port */
305
1ca7768c
FF		 306 /* DSCP + ECN */
307 __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
308 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
309
ca6549af
SW		 310 /* MPLS */
311 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
312 __be32 labels[MAX_MPLS_LABELS];
313
34954ddc
FF		 314 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
315 __u8 vlan_p;
316 __u8 vlan_cfi;
317 __u16 vlan_id; /* 0xffff means no vlan tag */
318
319 __u8 svlan_p;
320 __u8 svlan_cfi;
321 __u16 svlan_id; /* 0xffff means no svlan tag */
322
222f1806
LC		 323 __u32 src_mac_count; /* How many MACs to iterate through */
324 __u32 dst_mac_count; /* How many MACs to iterate through */
325
326 unsigned char dst_mac[ETH_ALEN];
327 unsigned char src_mac[ETH_ALEN];
328
329 __u32 cur_dst_mac_offset;
330 __u32 cur_src_mac_offset;
252e3346
AV		 331 __be32 cur_saddr;
332 __be32 cur_daddr;
222f1806
LC		 333 __u16 cur_udp_dst;
334 __u16 cur_udp_src;
45b270f8 335 __u16 cur_queue_map;
222f1806
LC		 336 __u32 cur_pkt_size;
337
338 __u8 hh[14];
339 /* = {
340 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
341
342 We fill in SRC address later
343 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
344 0x08, 0x00
345 };
346 */
347 __u16 pad; /* pad out the hh struct to an even 16 bytes */
348
349 struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
350 * are transmitting the same one multiple times
351 */
352 struct net_device *odev; /* The out-going device. Note that the device should
353 * have it's pg_info pointer pointing back to this
354 * device. This will be set when the user specifies
355 * the out-going device name (not when the inject is
356 * started as it used to do.)
357 */
1da177e4 358 struct flow_state *flows;
222f1806
LC		 359 unsigned cflows; /* Concurrent flows (config) */
360 unsigned lflow; /* Flow length (config) */
361 unsigned nflows; /* accumulated flows (stats) */
007a531b 362 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 363
364 u16 queue_map_min;
365 u16 queue_map_max;
366
a553e4a6
JHS		 367#ifdef CONFIG_XFRM
368 __u8 ipsmode; /* IPSEC mode (config) */
369 __u8 ipsproto; /* IPSEC type (config) */
370#endif
39df232f 371 char result[512];
1da177e4
LT		 372};
373
374struct pktgen_hdr {
252e3346
AV		 375 __be32 pgh_magic;
376 __be32 seq_num;
377 __be32 tv_sec;
378 __be32 tv_usec;
1da177e4
LT		 379};
380
381struct pktgen_thread {
222f1806 382 spinlock_t if_lock;
c26a8016 383 struct list_head if_list; /* All device here */
cdcdbe0b 384 struct list_head th_list;
ee74baa7 385 struct task_struct *tsk;
222f1806 386 char result[512];
222f1806
LC		 387
388 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
389
390 u32 control;
1da177e4
LT		 391 int cpu;
392
222f1806 393 wait_queue_head_t queue;
d3ede327 394 struct completion start_done;
1da177e4
LT		 395};
396
397#define REMOVE 1
398#define FIND 0
399
fd29cf72 400static inline ktime_t ktime_now(void)
1da177e4 401{
fd29cf72
SH		 402 struct timespec ts;
403 ktime_get_ts(&ts);
404
405 return timespec_to_ktime(ts);
1da177e4
LT		 406}
407
fd29cf72
SH		 408/* This works even if 32 bit because of careful byte order choice */
409static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 410{
fd29cf72 411 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 412}
413
65c5b786 414static const char version[] __initconst = VERSION;
1da177e4 415
222f1806
LC		 416static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
417static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
418static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
419 const char *ifname);
1da177e4
LT		 420static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
421static void pktgen_run_all_threads(void);
eb37b41c 422static void pktgen_reset_all_threads(void);
1da177e4 423static void pktgen_stop_all_threads_ifs(void);
3bda06a3 424
222f1806 425static void pktgen_stop(struct pktgen_thread *t);
1da177e4 426static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 427
222f1806
LC		 428static unsigned int scan_ip6(const char *s, char ip[16]);
429static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 430
431/* Module parameters, defaults. */
65c5b786
SH		 432static int pg_count_d __read_mostly = 1000;
433static int pg_delay_d __read_mostly;
434static int pg_clone_skb_d __read_mostly;
435static int debug __read_mostly;
1da177e4 436
222fa076 437static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 438static LIST_HEAD(pktgen_threads);
1da177e4 439
1da177e4
LT		 440static struct notifier_block pktgen_notifier_block = {
441 .notifier_call = pktgen_device_event,
442};
443
1da177e4 444/*
4ec93edb 445 * /proc handling functions
1da177e4
LT		 446 *
447 */
448
d50a6b56 449static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 450{
d50a6b56
SH		 451 seq_puts(seq, VERSION);
452 return 0;
1da177e4
LT		 453}
454
222f1806
LC		 455static ssize_t pgctrl_write(struct file *file, const char __user * buf,
456 size_t count, loff_t * ppos)
1da177e4 457{
1da177e4 458 int err = 0;
d50a6b56 459 char data[128];
1da177e4 460
222f1806
LC		 461 if (!capable(CAP_NET_ADMIN)) {
462 err = -EPERM;
1da177e4 463 goto out;
222f1806 464 }
1da177e4 465
d50a6b56
SH		 466 if (count > sizeof(data))
467 count = sizeof(data);
1da177e4 468
1da177e4 469 if (copy_from_user(data, buf, count)) {
b4099fab 470 err = -EFAULT;
d50a6b56 471 goto out;
222f1806
LC		 472 }
473 data[count - 1] = 0; /* Make string */
1da177e4 474
222f1806 475 if (!strcmp(data, "stop"))
1da177e4
LT		 476 pktgen_stop_all_threads_ifs();
477
222f1806 478 else if (!strcmp(data, "start"))
1da177e4
LT		 479 pktgen_run_all_threads();
480
eb37b41c
JB		 481 else if (!strcmp(data, "reset"))
482 pktgen_reset_all_threads();
483
222f1806 484 else
25a8b254 485 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 486
487 err = count;
488
222f1806
LC		 489out:
490 return err;
1da177e4
LT		 491}
492
d50a6b56
SH		 493static int pgctrl_open(struct inode *inode, struct file *file)
494{
495 return single_open(file, pgctrl_show, PDE(inode)->data);
496}
497
9a32144e 498static const struct file_operations pktgen_fops = {
222f1806
LC		 499 .owner = THIS_MODULE,
500 .open = pgctrl_open,
501 .read = seq_read,
502 .llseek = seq_lseek,
503 .write = pgctrl_write,
504 .release = single_release,
d50a6b56
SH		 505};
506
507static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 508{
648fda74 509 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 510 ktime_t stopped;
511 u64 idle;
222f1806
LC		 512
513 seq_printf(seq,
514 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
515 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
516 pkt_dev->max_pkt_size);
517
518 seq_printf(seq,
fd29cf72
SH		 519 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
520 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
39df232f 521 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 522
523 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
524 pkt_dev->lflow);
525
45b270f8
RO		 526 seq_printf(seq,
527 " queue_map_min: %u queue_map_max: %u\n",
528 pkt_dev->queue_map_min,
529 pkt_dev->queue_map_max);
530
222f1806
LC		 531 if (pkt_dev->flags & F_IPV6) {
532 char b1[128], b2[128], b3[128];
533 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
534 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
535 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
536 seq_printf(seq,
537 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
538 b2, b3);
539
540 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
541 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
542 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
543 seq_printf(seq,
544 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
545 b2, b3);
546
547 } else
548 seq_printf(seq,
549 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
550 pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
551 pkt_dev->src_max);
1da177e4 552
222f1806 553 seq_puts(seq, " src_mac: ");
1da177e4 554
e174961c
JB		 555 seq_printf(seq, "%pM ",
556 is_zero_ether_addr(pkt_dev->src_mac) ?
557 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 558
559 seq_printf(seq, "dst_mac: ");
e174961c 560 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 561
562 seq_printf(seq,
563 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
564 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
565 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
566
567 seq_printf(seq,
ca6549af 568 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 569 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 570
ca6549af
SW		 571 if (pkt_dev->nr_labels) {
572 unsigned i;
573 seq_printf(seq, " mpls: ");
e71a4783 574 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 575 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
576 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
577 }
578
34954ddc
FF		 579 if (pkt_dev->vlan_id != 0xffff) {
580 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
581 pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
582 }
583
584 if (pkt_dev->svlan_id != 0xffff) {
585 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
586 pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
587 }
588
1ca7768c
FF		 589 if (pkt_dev->tos) {
590 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
591 }
592
593 if (pkt_dev->traffic_class) {
594 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
595 }
596
ca6549af
SW		 597 seq_printf(seq, " Flags: ");
598
222f1806
LC		 599 if (pkt_dev->flags & F_IPV6)
600 seq_printf(seq, "IPV6 ");
1da177e4 601
222f1806
LC		 602 if (pkt_dev->flags & F_IPSRC_RND)
603 seq_printf(seq, "IPSRC_RND ");
1da177e4 604
222f1806
LC		 605 if (pkt_dev->flags & F_IPDST_RND)
606 seq_printf(seq, "IPDST_RND ");
1da177e4 607
222f1806
LC		 608 if (pkt_dev->flags & F_TXSIZE_RND)
609 seq_printf(seq, "TXSIZE_RND ");
1da177e4 610
222f1806
LC		 611 if (pkt_dev->flags & F_UDPSRC_RND)
612 seq_printf(seq, "UDPSRC_RND ");
1da177e4 613
222f1806
LC		 614 if (pkt_dev->flags & F_UDPDST_RND)
615 seq_printf(seq, "UDPDST_RND ");
1da177e4 616
ca6549af
SW		 617 if (pkt_dev->flags & F_MPLS_RND)
618 seq_printf(seq, "MPLS_RND ");
619
45b270f8
RO		 620 if (pkt_dev->flags & F_QUEUE_MAP_RND)
621 seq_printf(seq, "QUEUE_MAP_RND ");
622
e6fce5b9
RO		 623 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
624 seq_printf(seq, "QUEUE_MAP_CPU ");
625
007a531b
JHS		 626 if (pkt_dev->cflows) {
627 if (pkt_dev->flags & F_FLOW_SEQ)
628 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
629 else
630 seq_printf(seq, "FLOW_RND ");
631 }
632
a553e4a6
JHS		 633#ifdef CONFIG_XFRM
634 if (pkt_dev->flags & F_IPSEC_ON)
635 seq_printf(seq, "IPSEC ");
636#endif
637
222f1806
LC		 638 if (pkt_dev->flags & F_MACSRC_RND)
639 seq_printf(seq, "MACSRC_RND ");
1da177e4 640
222f1806
LC		 641 if (pkt_dev->flags & F_MACDST_RND)
642 seq_printf(seq, "MACDST_RND ");
1da177e4 643
34954ddc
FF		 644 if (pkt_dev->flags & F_VID_RND)
645 seq_printf(seq, "VID_RND ");
646
647 if (pkt_dev->flags & F_SVID_RND)
648 seq_printf(seq, "SVID_RND ");
649
222f1806
LC		 650 seq_puts(seq, "\n");
651
fd29cf72
SH		 652 /* not really stopped, more like last-running-at */
653 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
654 idle = pkt_dev->idle_acc;
655 do_div(idle, NSEC_PER_USEC);
1da177e4 656
222f1806 657 seq_printf(seq,
fd29cf72 658 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 659 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 660 (unsigned long long)pkt_dev->errors);
661
662 seq_printf(seq,
663 " started: %lluus stopped: %lluus idle: %lluus\n",
664 (unsigned long long) ktime_to_us(pkt_dev->started_at),
665 (unsigned long long) ktime_to_us(stopped),
666 (unsigned long long) idle);
1da177e4 667
222f1806
LC		 668 seq_printf(seq,
669 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 670 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
671 pkt_dev->cur_src_mac_offset);
1da177e4 672
222f1806 673 if (pkt_dev->flags & F_IPV6) {
1da177e4 674 char b1[128], b2[128];
222f1806
LC		 675 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
676 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
677 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
678 } else
679 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 680 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 681
222f1806 682 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 683 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 684
45b270f8
RO		 685 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
686
222f1806 687 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 688
689 if (pkt_dev->result[0])
222f1806 690 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 691 else
222f1806 692 seq_printf(seq, "Result: Idle\n");
1da177e4 693
d50a6b56 694 return 0;
1da177e4
LT		 695}
696
ca6549af 697
1ca7768c 698static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
ca6549af
SW		 699{
700 int i = 0;
701 *num = 0;
702
e71a4783 703 for (; i < maxlen; i++) {
ca6549af
SW		 704 char c;
705 *num <<= 4;
706 if (get_user(c, &user_buffer[i]))
707 return -EFAULT;
708 if ((c >= '0') && (c <= '9'))
709 *num |= c - '0';
710 else if ((c >= 'a') && (c <= 'f'))
711 *num |= c - 'a' + 10;
712 else if ((c >= 'A') && (c <= 'F'))
713 *num |= c - 'A' + 10;
714 else
715 break;
716 }
717 return i;
718}
719
222f1806
LC		 720static int count_trail_chars(const char __user * user_buffer,
721 unsigned int maxlen)
1da177e4
LT		 722{
723 int i;
724
725 for (i = 0; i < maxlen; i++) {
222f1806
LC		 726 char c;
727 if (get_user(c, &user_buffer[i]))
728 return -EFAULT;
729 switch (c) {
1da177e4
LT		 730 case '\"':
731 case '\n':
732 case '\r':
733 case '\t':
734 case ' ':
735 case '=':
736 break;
737 default:
738 goto done;
3ff50b79 739 }
1da177e4
LT		 740 }
741done:
742 return i;
743}
744
222f1806
LC		 745static unsigned long num_arg(const char __user * user_buffer,
746 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 747{
748 int i = 0;
749 *num = 0;
222f1806
LC		 750
751 for (; i < maxlen; i++) {
752 char c;
753 if (get_user(c, &user_buffer[i]))
754 return -EFAULT;
755 if ((c >= '0') && (c <= '9')) {
1da177e4 756 *num *= 10;
222f1806 757 *num += c - '0';
1da177e4
LT		 758 } else
759 break;
760 }
761 return i;
762}
763
222f1806 764static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 765{
766 int i = 0;
767
222f1806
LC		 768 for (; i < maxlen; i++) {
769 char c;
770 if (get_user(c, &user_buffer[i]))
771 return -EFAULT;
772 switch (c) {
1da177e4
LT		 773 case '\"':
774 case '\n':
775 case '\r':
776 case '\t':
777 case ' ':
778 goto done_str;
779 break;
780 default:
781 break;
3ff50b79 782 }
1da177e4
LT		 783 }
784done_str:
1da177e4
LT		 785 return i;
786}
787
ca6549af
SW		 788static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
789{
790 unsigned n = 0;
791 char c;
792 ssize_t i = 0;
793 int len;
794
795 pkt_dev->nr_labels = 0;
796 do {
797 __u32 tmp;
1ca7768c 798 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 799 if (len <= 0)
800 return len;
801 pkt_dev->labels[n] = htonl(tmp);
802 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
803 pkt_dev->flags |= F_MPLS_RND;
804 i += len;
805 if (get_user(c, &buffer[i]))
806 return -EFAULT;
807 i++;
808 n++;
809 if (n >= MAX_MPLS_LABELS)
810 return -E2BIG;
e71a4783 811 } while (c == ',');
ca6549af
SW		 812
813 pkt_dev->nr_labels = n;
814 return i;
815}
816
222f1806
LC		 817static ssize_t pktgen_if_write(struct file *file,
818 const char __user * user_buffer, size_t count,
819 loff_t * offset)
1da177e4 820{
222f1806
LC		 821 struct seq_file *seq = (struct seq_file *)file->private_data;
822 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 823 int i = 0, max, len;
824 char name[16], valstr[32];
825 unsigned long value = 0;
222f1806
LC		 826 char *pg_result = NULL;
827 int tmp = 0;
1da177e4 828 char buf[128];
222f1806
LC		 829
830 pg_result = &(pkt_dev->result[0]);
831
1da177e4 832 if (count < 1) {
25a8b254 833 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 834 return -EINVAL;
835 }
222f1806 836
1da177e4
LT		 837 max = count - i;
838 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 839 if (tmp < 0) {
25a8b254 840 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 841 return tmp;
1da177e4 842 }
222f1806
LC		 843 i += tmp;
844
1da177e4
LT		 845 /* Read variable name */
846
847 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806
LC		 848 if (len < 0) {
849 return len;
850 }
1da177e4 851 memset(name, 0, sizeof(name));
222f1806 852 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 853 return -EFAULT;
854 i += len;
222f1806
LC		 855
856 max = count - i;
1da177e4 857 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 858 if (len < 0)
859 return len;
860
1da177e4
LT		 861 i += len;
862
863 if (debug) {
222f1806
LC		 864 char tb[count + 1];
865 if (copy_from_user(tb, user_buffer, count))
1da177e4 866 return -EFAULT;
222f1806 867 tb[count] = 0;
25a8b254 868 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 869 (unsigned long)count, tb);
870 }
1da177e4
LT		 871
872 if (!strcmp(name, "min_pkt_size")) {
873 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 874 if (len < 0) {
875 return len;
876 }
1da177e4 877 i += len;
222f1806
LC		 878 if (value < 14 + 20 + 8)
879 value = 14 + 20 + 8;
880 if (value != pkt_dev->min_pkt_size) {
881 pkt_dev->min_pkt_size = value;
882 pkt_dev->cur_pkt_size = value;
883 }
884 sprintf(pg_result, "OK: min_pkt_size=%u",
885 pkt_dev->min_pkt_size);
1da177e4
LT		 886 return count;
887 }
888
222f1806 889 if (!strcmp(name, "max_pkt_size")) {
1da177e4 890 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 891 if (len < 0) {
892 return len;
893 }
1da177e4 894 i += len;
222f1806
LC		 895 if (value < 14 + 20 + 8)
896 value = 14 + 20 + 8;
897 if (value != pkt_dev->max_pkt_size) {
898 pkt_dev->max_pkt_size = value;
899 pkt_dev->cur_pkt_size = value;
900 }
901 sprintf(pg_result, "OK: max_pkt_size=%u",
902 pkt_dev->max_pkt_size);
1da177e4
LT		 903 return count;
904 }
905
222f1806 906 /* Shortcut for min = max */
1da177e4
LT		 907
908 if (!strcmp(name, "pkt_size")) {
909 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 910 if (len < 0) {
911 return len;
912 }
1da177e4 913 i += len;
222f1806
LC		 914 if (value < 14 + 20 + 8)
915 value = 14 + 20 + 8;
916 if (value != pkt_dev->min_pkt_size) {
917 pkt_dev->min_pkt_size = value;
918 pkt_dev->max_pkt_size = value;
919 pkt_dev->cur_pkt_size = value;
920 }
1da177e4
LT		 921 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
922 return count;
923 }
924
222f1806 925 if (!strcmp(name, "debug")) {
1da177e4 926 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 927 if (len < 0) {
928 return len;
929 }
1da177e4 930 i += len;
222f1806 931 debug = value;
1da177e4
LT		 932 sprintf(pg_result, "OK: debug=%u", debug);
933 return count;
934 }
935
222f1806 936 if (!strcmp(name, "frags")) {
1da177e4 937 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 938 if (len < 0) {
939 return len;
940 }
1da177e4
LT		 941 i += len;
942 pkt_dev->nfrags = value;
943 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
944 return count;
945 }
946 if (!strcmp(name, "delay")) {
947 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 948 if (len < 0) {
949 return len;
950 }
1da177e4 951 i += len;
fd29cf72
SH		 952 if (value == 0x7FFFFFFF)
953 pkt_dev->delay = ULLONG_MAX;
954 else
955 pkt_dev->delay = (u64)value * NSEC_PER_USEC;
956
957 sprintf(pg_result, "OK: delay=%llu",
958 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 959 return count;
960 }
222f1806 961 if (!strcmp(name, "udp_src_min")) {
1da177e4 962 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 963 if (len < 0) {
964 return len;
965 }
1da177e4 966 i += len;
222f1806
LC		 967 if (value != pkt_dev->udp_src_min) {
968 pkt_dev->udp_src_min = value;
969 pkt_dev->cur_udp_src = value;
970 }
1da177e4
LT		 971 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
972 return count;
973 }
222f1806 974 if (!strcmp(name, "udp_dst_min")) {
1da177e4 975 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 976 if (len < 0) {
977 return len;
978 }
1da177e4 979 i += len;
222f1806
LC		 980 if (value != pkt_dev->udp_dst_min) {
981 pkt_dev->udp_dst_min = value;
982 pkt_dev->cur_udp_dst = value;
983 }
1da177e4
LT		 984 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
985 return count;
986 }
222f1806 987 if (!strcmp(name, "udp_src_max")) {
1da177e4 988 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 989 if (len < 0) {
990 return len;
991 }
1da177e4 992 i += len;
222f1806
LC		 993 if (value != pkt_dev->udp_src_max) {
994 pkt_dev->udp_src_max = value;
995 pkt_dev->cur_udp_src = value;
996 }
1da177e4
LT		 997 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
998 return count;
999 }
222f1806 1000 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1001 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1002 if (len < 0) {
1003 return len;
1004 }
1da177e4 1005 i += len;
222f1806
LC		 1006 if (value != pkt_dev->udp_dst_max) {
1007 pkt_dev->udp_dst_max = value;
1008 pkt_dev->cur_udp_dst = value;
1009 }
1da177e4
LT		 1010 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1011 return count;
1012 }
1013 if (!strcmp(name, "clone_skb")) {
1014 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1015 if (len < 0) {
1016 return len;
1017 }
1da177e4 1018 i += len;
222f1806
LC		 1019 pkt_dev->clone_skb = value;
1020
1da177e4
LT		 1021 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1022 return count;
1023 }
1024 if (!strcmp(name, "count")) {
1025 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1026 if (len < 0) {
1027 return len;
1028 }
1da177e4
LT		 1029 i += len;
1030 pkt_dev->count = value;
1031 sprintf(pg_result, "OK: count=%llu",
222f1806 1032 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1033 return count;
1034 }
1035 if (!strcmp(name, "src_mac_count")) {
1036 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1037 if (len < 0) {
1038 return len;
1039 }
1da177e4
LT		 1040 i += len;
1041 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1042 pkt_dev->src_mac_count = value;
1043 pkt_dev->cur_src_mac_offset = 0;
1044 }
1045 sprintf(pg_result, "OK: src_mac_count=%d",
1046 pkt_dev->src_mac_count);
1da177e4
LT		 1047 return count;
1048 }
1049 if (!strcmp(name, "dst_mac_count")) {
1050 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1051 if (len < 0) {
1052 return len;
1053 }
1da177e4
LT		 1054 i += len;
1055 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1056 pkt_dev->dst_mac_count = value;
1057 pkt_dev->cur_dst_mac_offset = 0;
1058 }
1059 sprintf(pg_result, "OK: dst_mac_count=%d",
1060 pkt_dev->dst_mac_count);
1da177e4
LT		 1061 return count;
1062 }
1063 if (!strcmp(name, "flag")) {
222f1806
LC		 1064 char f[32];
1065 memset(f, 0, 32);
1da177e4 1066 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1067 if (len < 0) {
1068 return len;
1069 }
1da177e4
LT		 1070 if (copy_from_user(f, &user_buffer[i], len))
1071 return -EFAULT;
1072 i += len;
222f1806
LC		 1073 if (strcmp(f, "IPSRC_RND") == 0)
1074 pkt_dev->flags |= F_IPSRC_RND;
1075
1076 else if (strcmp(f, "!IPSRC_RND") == 0)
1077 pkt_dev->flags &= ~F_IPSRC_RND;
1078
1079 else if (strcmp(f, "TXSIZE_RND") == 0)
1080 pkt_dev->flags |= F_TXSIZE_RND;
1081
1082 else if (strcmp(f, "!TXSIZE_RND") == 0)
1083 pkt_dev->flags &= ~F_TXSIZE_RND;
1084
1085 else if (strcmp(f, "IPDST_RND") == 0)
1086 pkt_dev->flags |= F_IPDST_RND;
1087
1088 else if (strcmp(f, "!IPDST_RND") == 0)
1089 pkt_dev->flags &= ~F_IPDST_RND;
1090
1091 else if (strcmp(f, "UDPSRC_RND") == 0)
1092 pkt_dev->flags |= F_UDPSRC_RND;
1093
1094 else if (strcmp(f, "!UDPSRC_RND") == 0)
1095 pkt_dev->flags &= ~F_UDPSRC_RND;
1096
1097 else if (strcmp(f, "UDPDST_RND") == 0)
1098 pkt_dev->flags |= F_UDPDST_RND;
1099
1100 else if (strcmp(f, "!UDPDST_RND") == 0)
1101 pkt_dev->flags &= ~F_UDPDST_RND;
1102
1103 else if (strcmp(f, "MACSRC_RND") == 0)
1104 pkt_dev->flags |= F_MACSRC_RND;
1105
1106 else if (strcmp(f, "!MACSRC_RND") == 0)
1107 pkt_dev->flags &= ~F_MACSRC_RND;
1108
1109 else if (strcmp(f, "MACDST_RND") == 0)
1110 pkt_dev->flags |= F_MACDST_RND;
1111
1112 else if (strcmp(f, "!MACDST_RND") == 0)
1113 pkt_dev->flags &= ~F_MACDST_RND;
1114
ca6549af
SW		 1115 else if (strcmp(f, "MPLS_RND") == 0)
1116 pkt_dev->flags |= F_MPLS_RND;
1117
1118 else if (strcmp(f, "!MPLS_RND") == 0)
1119 pkt_dev->flags &= ~F_MPLS_RND;
1120
34954ddc
FF		 1121 else if (strcmp(f, "VID_RND") == 0)
1122 pkt_dev->flags |= F_VID_RND;
1123
1124 else if (strcmp(f, "!VID_RND") == 0)
1125 pkt_dev->flags &= ~F_VID_RND;
1126
1127 else if (strcmp(f, "SVID_RND") == 0)
1128 pkt_dev->flags |= F_SVID_RND;
1129
1130 else if (strcmp(f, "!SVID_RND") == 0)
1131 pkt_dev->flags &= ~F_SVID_RND;
1132
007a531b
JHS		 1133 else if (strcmp(f, "FLOW_SEQ") == 0)
1134 pkt_dev->flags |= F_FLOW_SEQ;
1135
45b270f8
RO		 1136 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1137 pkt_dev->flags |= F_QUEUE_MAP_RND;
1138
1139 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1140 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1141
1142 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1143 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1144
1145 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1146 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1147#ifdef CONFIG_XFRM
1148 else if (strcmp(f, "IPSEC") == 0)
1149 pkt_dev->flags |= F_IPSEC_ON;
1150#endif
1151
1ca7768c
FF		 1152 else if (strcmp(f, "!IPV6") == 0)
1153 pkt_dev->flags &= ~F_IPV6;
1154
222f1806
LC		 1155 else {
1156 sprintf(pg_result,
1157 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1158 f,
1ca7768c 1159 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1160 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1161 return count;
1162 }
1da177e4
LT		 1163 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1164 return count;
1165 }
1166 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1167 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
222f1806
LC		 1168 if (len < 0) {
1169 return len;
1170 }
1da177e4 1171
222f1806 1172 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1173 return -EFAULT;
222f1806
LC		 1174 buf[len] = 0;
1175 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1176 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1177 strncpy(pkt_dev->dst_min, buf, len);
1178 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1179 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1180 }
1181 if (debug)
25a8b254 1182 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1183 pkt_dev->dst_min);
1184 i += len;
1da177e4
LT		 1185 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1186 return count;
1187 }
1188 if (!strcmp(name, "dst_max")) {
1189 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
222f1806
LC		 1190 if (len < 0) {
1191 return len;
1192 }
1da177e4 1193
222f1806 1194 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1195 return -EFAULT;
1196
222f1806
LC		 1197 buf[len] = 0;
1198 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1199 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1200 strncpy(pkt_dev->dst_max, buf, len);
1201 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1202 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1203 }
1204 if (debug)
25a8b254 1205 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1206 pkt_dev->dst_max);
1da177e4
LT		 1207 i += len;
1208 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1209 return count;
1210 }
1211 if (!strcmp(name, "dst6")) {
1212 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1213 if (len < 0)
1214 return len;
1da177e4
LT		 1215
1216 pkt_dev->flags |= F_IPV6;
1217
222f1806 1218 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1219 return -EFAULT;
222f1806 1220 buf[len] = 0;
1da177e4
LT		 1221
1222 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1223 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1224
1225 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1226
222f1806 1227 if (debug)
25a8b254 1228 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1229
222f1806 1230 i += len;
1da177e4
LT		 1231 sprintf(pg_result, "OK: dst6=%s", buf);
1232 return count;
1233 }
1234 if (!strcmp(name, "dst6_min")) {
1235 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1236 if (len < 0)
1237 return len;
1da177e4
LT		 1238
1239 pkt_dev->flags |= F_IPV6;
1240
222f1806 1241 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1242 return -EFAULT;
222f1806 1243 buf[len] = 0;
1da177e4
LT		 1244
1245 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1246 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1247
222f1806
LC		 1248 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1249 &pkt_dev->min_in6_daddr);
1250 if (debug)
25a8b254 1251 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1252
222f1806 1253 i += len;
1da177e4
LT		 1254 sprintf(pg_result, "OK: dst6_min=%s", buf);
1255 return count;
1256 }
1257 if (!strcmp(name, "dst6_max")) {
1258 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1259 if (len < 0)
1260 return len;
1da177e4
LT		 1261
1262 pkt_dev->flags |= F_IPV6;
1263
222f1806 1264 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1265 return -EFAULT;
222f1806 1266 buf[len] = 0;
1da177e4
LT		 1267
1268 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1269 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1270
222f1806 1271 if (debug)
25a8b254 1272 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1273
222f1806 1274 i += len;
1da177e4
LT		 1275 sprintf(pg_result, "OK: dst6_max=%s", buf);
1276 return count;
1277 }
1278 if (!strcmp(name, "src6")) {
1279 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1280 if (len < 0)
1281 return len;
1da177e4
LT		 1282
1283 pkt_dev->flags |= F_IPV6;
1284
222f1806 1285 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1286 return -EFAULT;
222f1806 1287 buf[len] = 0;
1da177e4
LT		 1288
1289 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1290 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1291
1292 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1293
222f1806 1294 if (debug)
25a8b254 1295 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1296
1297 i += len;
1da177e4
LT		 1298 sprintf(pg_result, "OK: src6=%s", buf);
1299 return count;
1300 }
1301 if (!strcmp(name, "src_min")) {
1302 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
222f1806
LC		 1303 if (len < 0) {
1304 return len;
1305 }
1306 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1307 return -EFAULT;
222f1806
LC		 1308 buf[len] = 0;
1309 if (strcmp(buf, pkt_dev->src_min) != 0) {
1310 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1311 strncpy(pkt_dev->src_min, buf, len);
1312 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1313 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1314 }
1315 if (debug)
25a8b254 1316 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1317 pkt_dev->src_min);
1da177e4
LT		 1318 i += len;
1319 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1320 return count;
1321 }
1322 if (!strcmp(name, "src_max")) {
1323 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
222f1806
LC		 1324 if (len < 0) {
1325 return len;
1326 }
1327 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1328 return -EFAULT;
222f1806
LC		 1329 buf[len] = 0;
1330 if (strcmp(buf, pkt_dev->src_max) != 0) {
1331 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1332 strncpy(pkt_dev->src_max, buf, len);
1333 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1334 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1335 }
1336 if (debug)
25a8b254 1337 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1338 pkt_dev->src_max);
1da177e4
LT		 1339 i += len;
1340 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1341 return count;
1342 }
1343 if (!strcmp(name, "dst_mac")) {
1344 char *v = valstr;
f404e9a6 1345 unsigned char old_dmac[ETH_ALEN];
1da177e4 1346 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1347 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1348
1da177e4 1349 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1350 if (len < 0) {
1351 return len;
1352 }
1da177e4 1353 memset(valstr, 0, sizeof(valstr));
222f1806 1354 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1355 return -EFAULT;
1356 i += len;
1357
222f1806 1358 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1359 if (*v >= '0' && *v <= '9') {
1360 *m *= 16;
1361 *m += *v - '0';
1362 }
1363 if (*v >= 'A' && *v <= 'F') {
1364 *m *= 16;
1365 *m += *v - 'A' + 10;
1366 }
1367 if (*v >= 'a' && *v <= 'f') {
1368 *m *= 16;
1369 *m += *v - 'a' + 10;
1370 }
1371 if (*v == ':') {
1372 m++;
1373 *m = 0;
1374 }
1375 }
1376
1377 /* Set up Dest MAC */
f404e9a6
KK		 1378 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1379 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1380
1da177e4
LT		 1381 sprintf(pg_result, "OK: dstmac");
1382 return count;
1383 }
1384 if (!strcmp(name, "src_mac")) {
1385 char *v = valstr;
ce5d0b47 1386 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1387 unsigned char *m = pkt_dev->src_mac;
1388
ce5d0b47
AR		 1389 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1390
1da177e4 1391 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1392 if (len < 0) {
1393 return len;
1394 }
1da177e4 1395 memset(valstr, 0, sizeof(valstr));
222f1806 1396 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1397 return -EFAULT;
1398 i += len;
1399
222f1806 1400 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1401 if (*v >= '0' && *v <= '9') {
1402 *m *= 16;
1403 *m += *v - '0';
1404 }
1405 if (*v >= 'A' && *v <= 'F') {
1406 *m *= 16;
1407 *m += *v - 'A' + 10;
1408 }
1409 if (*v >= 'a' && *v <= 'f') {
1410 *m *= 16;
1411 *m += *v - 'a' + 10;
1412 }
1413 if (*v == ':') {
1414 m++;
1415 *m = 0;
1416 }
222f1806 1417 }
1da177e4 1418
ce5d0b47
AR		 1419 /* Set up Src MAC */
1420 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1421 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1422
222f1806 1423 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1424 return count;
1425 }
1426
222f1806
LC		 1427 if (!strcmp(name, "clear_counters")) {
1428 pktgen_clear_counters(pkt_dev);
1429 sprintf(pg_result, "OK: Clearing counters.\n");
1430 return count;
1431 }
1da177e4
LT		 1432
1433 if (!strcmp(name, "flows")) {
1434 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1435 if (len < 0) {
1436 return len;
1437 }
1da177e4
LT		 1438 i += len;
1439 if (value > MAX_CFLOWS)
1440 value = MAX_CFLOWS;
1441
1442 pkt_dev->cflows = value;
1443 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1444 return count;
1445 }
1446
1447 if (!strcmp(name, "flowlen")) {
1448 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1449 if (len < 0) {
1450 return len;
1451 }
1da177e4
LT		 1452 i += len;
1453 pkt_dev->lflow = value;
1454 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1455 return count;
1456 }
222f1806 1457
45b270f8
RO		 1458 if (!strcmp(name, "queue_map_min")) {
1459 len = num_arg(&user_buffer[i], 5, &value);
1460 if (len < 0) {
1461 return len;
1462 }
1463 i += len;
1464 pkt_dev->queue_map_min = value;
1465 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1466 return count;
1467 }
1468
1469 if (!strcmp(name, "queue_map_max")) {
1470 len = num_arg(&user_buffer[i], 5, &value);
1471 if (len < 0) {
1472 return len;
1473 }
1474 i += len;
1475 pkt_dev->queue_map_max = value;
1476 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1477 return count;
1478 }
1479
ca6549af 1480 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1481 unsigned n, cnt;
1482
ca6549af 1483 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1484 if (len < 0)
1485 return len;
ca6549af 1486 i += len;
cfcabdcc 1487 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1488 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1489 cnt += sprintf(pg_result + cnt,
1490 "%08x%s", ntohl(pkt_dev->labels[n]),
1491 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1492
1493 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1494 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1495 pkt_dev->svlan_id = 0xffff;
1496
1497 if (debug)
25a8b254 1498 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1499 }
1500 return count;
1501 }
1502
1503 if (!strcmp(name, "vlan_id")) {
1504 len = num_arg(&user_buffer[i], 4, &value);
1505 if (len < 0) {
1506 return len;
1507 }
1508 i += len;
1509 if (value <= 4095) {
1510 pkt_dev->vlan_id = value; /* turn on VLAN */
1511
1512 if (debug)
25a8b254 1513 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1514
1515 if (debug && pkt_dev->nr_labels)
25a8b254 1516 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1517
1518 pkt_dev->nr_labels = 0; /* turn off MPLS */
1519 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1520 } else {
1521 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1522 pkt_dev->svlan_id = 0xffff;
1523
1524 if (debug)
25a8b254 1525 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1526 }
1527 return count;
1528 }
1529
1530 if (!strcmp(name, "vlan_p")) {
1531 len = num_arg(&user_buffer[i], 1, &value);
1532 if (len < 0) {
1533 return len;
1534 }
1535 i += len;
1536 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1537 pkt_dev->vlan_p = value;
1538 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1539 } else {
1540 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1541 }
1542 return count;
1543 }
1544
1545 if (!strcmp(name, "vlan_cfi")) {
1546 len = num_arg(&user_buffer[i], 1, &value);
1547 if (len < 0) {
1548 return len;
1549 }
1550 i += len;
1551 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1552 pkt_dev->vlan_cfi = value;
1553 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1554 } else {
1555 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1556 }
1557 return count;
1558 }
1559
1560 if (!strcmp(name, "svlan_id")) {
1561 len = num_arg(&user_buffer[i], 4, &value);
1562 if (len < 0) {
1563 return len;
1564 }
1565 i += len;
1566 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1567 pkt_dev->svlan_id = value; /* turn on SVLAN */
1568
1569 if (debug)
25a8b254 1570 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1571
1572 if (debug && pkt_dev->nr_labels)
25a8b254 1573 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1574
1575 pkt_dev->nr_labels = 0; /* turn off MPLS */
1576 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1577 } else {
1578 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1579 pkt_dev->svlan_id = 0xffff;
1580
1581 if (debug)
25a8b254 1582 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1583 }
1584 return count;
1585 }
1586
1587 if (!strcmp(name, "svlan_p")) {
1588 len = num_arg(&user_buffer[i], 1, &value);
1589 if (len < 0) {
1590 return len;
1591 }
1592 i += len;
1593 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1594 pkt_dev->svlan_p = value;
1595 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1596 } else {
1597 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1598 }
1599 return count;
1600 }
1601
1602 if (!strcmp(name, "svlan_cfi")) {
1603 len = num_arg(&user_buffer[i], 1, &value);
1604 if (len < 0) {
1605 return len;
1606 }
1607 i += len;
1608 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1609 pkt_dev->svlan_cfi = value;
1610 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1611 } else {
1612 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1613 }
ca6549af
SW		 1614 return count;
1615 }
1616
1ca7768c
FF		 1617 if (!strcmp(name, "tos")) {
1618 __u32 tmp_value = 0;
1619 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1620 if (len < 0) {
1621 return len;
1622 }
1623 i += len;
1624 if (len == 2) {
1625 pkt_dev->tos = tmp_value;
1626 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1627 } else {
1628 sprintf(pg_result, "ERROR: tos must be 00-ff");
1629 }
1630 return count;
1631 }
1632
1633 if (!strcmp(name, "traffic_class")) {
1634 __u32 tmp_value = 0;
1635 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1636 if (len < 0) {
1637 return len;
1638 }
1639 i += len;
1640 if (len == 2) {
1641 pkt_dev->traffic_class = tmp_value;
1642 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1643 } else {
1644 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1645 }
1646 return count;
1647 }
1648
1da177e4
LT		 1649 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1650 return -EINVAL;
1651}
1652
d50a6b56 1653static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1654{
d50a6b56
SH		 1655 return single_open(file, pktgen_if_show, PDE(inode)->data);
1656}
1da177e4 1657
9a32144e 1658static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1659 .owner = THIS_MODULE,
1660 .open = pktgen_if_open,
1661 .read = seq_read,
1662 .llseek = seq_lseek,
1663 .write = pktgen_if_write,
1664 .release = single_release,
d50a6b56 1665};
1da177e4 1666
d50a6b56
SH		 1667static int pktgen_thread_show(struct seq_file *seq, void *v)
1668{
222f1806 1669 struct pktgen_thread *t = seq->private;
648fda74 1670 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1671
1672 BUG_ON(!t);
1da177e4 1673
222f1806 1674 seq_printf(seq, "Running: ");
1da177e4 1675
222f1806 1676 if_lock(t);
c26a8016 1677 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1678 if (pkt_dev->running)
39df232f 1679 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1680
222f1806
LC		 1681 seq_printf(seq, "\nStopped: ");
1682
c26a8016 1683 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1684 if (!pkt_dev->running)
39df232f 1685 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1686
1687 if (t->result[0])
d50a6b56 1688 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1689 else
d50a6b56 1690 seq_printf(seq, "\nResult: NA\n");
1da177e4 1691
222f1806 1692 if_unlock(t);
1da177e4 1693
d50a6b56 1694 return 0;
1da177e4
LT		 1695}
1696
d50a6b56 1697static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1698 const char __user * user_buffer,
1699 size_t count, loff_t * offset)
1da177e4 1700{
222f1806
LC		 1701 struct seq_file *seq = (struct seq_file *)file->private_data;
1702 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1703 int i = 0, max, len, ret;
1704 char name[40];
222f1806 1705 char *pg_result;
d50a6b56 1706
1da177e4 1707 if (count < 1) {
222f1806 1708 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1709 return -EINVAL;
1710 }
d50a6b56 1711
1da177e4 1712 max = count - i;
222f1806
LC		 1713 len = count_trail_chars(&user_buffer[i], max);
1714 if (len < 0)
d50a6b56
SH		 1715 return len;
1716
1da177e4 1717 i += len;
d50a6b56 1718
1da177e4
LT		 1719 /* Read variable name */
1720
1721 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1722 if (len < 0)
d50a6b56 1723 return len;
222f1806 1724
1da177e4
LT		 1725 memset(name, 0, sizeof(name));
1726 if (copy_from_user(name, &user_buffer[i], len))
1727 return -EFAULT;
1728 i += len;
d50a6b56 1729
222f1806 1730 max = count - i;
1da177e4 1731 len = count_trail_chars(&user_buffer[i], max);
222f1806 1732 if (len < 0)
d50a6b56
SH		 1733 return len;
1734
1da177e4
LT		 1735 i += len;
1736
d50a6b56 1737 if (debug)
25a8b254
DM		 1738 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1739 name, (unsigned long)count);
1da177e4 1740
222f1806 1741 if (!t) {
25a8b254 1742 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1743 ret = -EINVAL;
1744 goto out;
1745 }
1746
1747 pg_result = &(t->result[0]);
1748
222f1806
LC		 1749 if (!strcmp(name, "add_device")) {
1750 char f[32];
1751 memset(f, 0, 32);
1da177e4 1752 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1753 if (len < 0) {
1754 ret = len;
1da177e4
LT		 1755 goto out;
1756 }
222f1806 1757 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1758 return -EFAULT;
1759 i += len;
6146e6a4 1760 mutex_lock(&pktgen_thread_lock);
222f1806 1761 pktgen_add_device(t, f);
6146e6a4 1762 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1763 ret = count;
1764 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1765 goto out;
1766 }
1767
222f1806 1768 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1769 mutex_lock(&pktgen_thread_lock);
95ed63f7 1770 t->control |= T_REMDEVALL;
6146e6a4 1771 mutex_unlock(&pktgen_thread_lock);
222f1806 1772 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1773 ret = count;
222f1806 1774 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1775 goto out;
1776 }
1777
222f1806 1778 if (!strcmp(name, "max_before_softirq")) {
b163911f 1779 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1780 ret = count;
1da177e4
LT		 1781 goto out;
1782 }
1783
1784 ret = -EINVAL;
222f1806 1785out:
1da177e4
LT		 1786 return ret;
1787}
1788
d50a6b56 1789static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1790{
d50a6b56 1791 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1792}
1793
9a32144e 1794static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1795 .owner = THIS_MODULE,
1796 .open = pktgen_thread_open,
1797 .read = seq_read,
1798 .llseek = seq_lseek,
1799 .write = pktgen_thread_write,
1800 .release = single_release,
d50a6b56 1801};
1da177e4
LT		 1802
1803/* Think find or remove for NN */
222f1806 1804static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1805{
1806 struct pktgen_thread *t;
1807 struct pktgen_dev *pkt_dev = NULL;
1808
cdcdbe0b 1809 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1810 pkt_dev = pktgen_find_dev(t, ifname);
1811 if (pkt_dev) {
222f1806
LC		 1812 if (remove) {
1813 if_lock(t);
1814 pkt_dev->removal_mark = 1;
1815 t->control |= T_REMDEV;
1816 if_unlock(t);
1817 }
1da177e4
LT		 1818 break;
1819 }
1da177e4 1820 }
222f1806 1821 return pkt_dev;
1da177e4
LT		 1822}
1823
95ed63f7
AK		 1824/*
1825 * mark a device for removal
1826 */
39df232f 1827static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1828{
1829 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1830 const int max_tries = 10, msec_per_try = 125;
1831 int i = 0;
95ed63f7 1832
6146e6a4 1833 mutex_lock(&pktgen_thread_lock);
25c4e53a 1834 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1835
222f1806 1836 while (1) {
95ed63f7
AK		 1837
1838 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1839 if (pkt_dev == NULL)
1840 break; /* success */
95ed63f7 1841
6146e6a4 1842 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1843 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1844 "to disappear....\n", ifname);
95ed63f7 1845 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1846 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1847
1848 if (++i >= max_tries) {
25a8b254
DM		 1849 printk(KERN_ERR "pktgen_mark_device: timed out after "
1850 "waiting %d msec for device %s to be removed\n",
222f1806 1851 msec_per_try * i, ifname);
95ed63f7
AK		 1852 break;
1853 }
1854
1855 }
1856
6146e6a4 1857 mutex_unlock(&pktgen_thread_lock);
39df232f 1858}
95ed63f7 1859
39df232f
SH		 1860static void pktgen_change_name(struct net_device *dev)
1861{
1862 struct pktgen_thread *t;
1863
1864 list_for_each_entry(t, &pktgen_threads, th_list) {
1865 struct pktgen_dev *pkt_dev;
1866
1867 list_for_each_entry(pkt_dev, &t->if_list, list) {
1868 if (pkt_dev->odev != dev)
1869 continue;
1870
1871 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1872
1873 pkt_dev->entry = create_proc_entry(dev->name, 0600,
1874 pg_proc_dir);
1875 if (!pkt_dev->entry)
1876 printk(KERN_ERR "pktgen: can't move proc "
1877 " entry for '%s'\n", dev->name);
1878 break;
1879 }
1880 }
1da177e4
LT		 1881}
1882
222f1806
LC		 1883static int pktgen_device_event(struct notifier_block *unused,
1884 unsigned long event, void *ptr)
1da177e4 1885{
39df232f 1886 struct net_device *dev = ptr;
1da177e4 1887
721499e8 1888 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1889 return NOTIFY_DONE;
1890
1da177e4
LT		 1891 /* It is OK that we do not hold the group lock right now,
1892 * as we run under the RTNL lock.
1893 */
1894
1895 switch (event) {
39df232f
SH		 1896 case NETDEV_CHANGENAME:
1897 pktgen_change_name(dev);
1da177e4 1898 break;
222f1806 1899
1da177e4 1900 case NETDEV_UNREGISTER:
222f1806 1901 pktgen_mark_device(dev->name);
1da177e4 1902 break;
3ff50b79 1903 }
1da177e4
LT		 1904
1905 return NOTIFY_DONE;
1906}
1907
e6fce5b9
RO		 1908static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname)
1909{
1910 char b[IFNAMSIZ+5];
1911 int i = 0;
1912
1913 for(i=0; ifname[i] != '@'; i++) {
1914 if(i == IFNAMSIZ)
1915 break;
1916
1917 b[i] = ifname[i];
1918 }
1919 b[i] = 0;
1920
1921 return dev_get_by_name(&init_net, b);
1922}
1923
1924
1da177e4
LT		 1925/* Associate pktgen_dev with a device. */
1926
39df232f 1927static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1928{
1da177e4 1929 struct net_device *odev;
39df232f 1930 int err;
1da177e4
LT		 1931
1932 /* Clean old setups */
1da177e4
LT		 1933 if (pkt_dev->odev) {
1934 dev_put(pkt_dev->odev);
222f1806
LC		 1935 pkt_dev->odev = NULL;
1936 }
1da177e4 1937
e6fce5b9 1938 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1939 if (!odev) {
25a8b254 1940 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1941 return -ENODEV;
1da177e4 1942 }
39df232f 1943
1da177e4 1944 if (odev->type != ARPHRD_ETHER) {
25a8b254 1945 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1946 err = -EINVAL;
1947 } else if (!netif_running(odev)) {
25a8b254 1948 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1949 err = -ENETDOWN;
1950 } else {
1951 pkt_dev->odev = odev;
1952 return 0;
1da177e4 1953 }
1da177e4 1954
1da177e4 1955 dev_put(odev);
39df232f 1956 return err;
1da177e4
LT		 1957}
1958
1959/* Read pkt_dev from the interface and set up internal pktgen_dev
1960 * structure to have the right information to create/send packets
1961 */
1962static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
1963{
64c00d81
AG		 1964 int ntxq;
1965
222f1806 1966 if (!pkt_dev->odev) {
25a8b254
DM		 1967 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
1968 "setup_inject.\n");
222f1806
LC		 1969 sprintf(pkt_dev->result,
1970 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1971 return;
1972 }
1973
64c00d81
AG		 1974 /* make sure that we don't pick a non-existing transmit queue */
1975 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 1976
64c00d81
AG		 1977 if (ntxq <= pkt_dev->queue_map_min) {
1978 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1979 "queue_map_min (zero-based) (%d) exceeds valid range "
1980 "[0 - %d] for (%d) queues on %s, resetting\n",
1981 pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
1982 pkt_dev->odev->name);
64c00d81
AG		 1983 pkt_dev->queue_map_min = ntxq - 1;
1984 }
88271660 1985 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 1986 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1987 "queue_map_max (zero-based) (%d) exceeds valid range "
1988 "[0 - %d] for (%d) queues on %s, resetting\n",
1989 pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
1990 pkt_dev->odev->name);
64c00d81
AG		 1991 pkt_dev->queue_map_max = ntxq - 1;
1992 }
1993
222f1806 1994 /* Default to the interface's mac if not explicitly set. */
1da177e4 1995
f404e9a6 1996 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 1997 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 1998
222f1806 1999 /* Set up Dest MAC */
f404e9a6 2000 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2001
222f1806
LC		 2002 /* Set up pkt size */
2003 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2004
2005 if (pkt_dev->flags & F_IPV6) {
1da177e4 2006 /*
4ec93edb 2007 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2008 * gets exported
2009 */
2010
2011#ifdef NOTNOW
222f1806 2012 int i, set = 0, err = 1;
1da177e4
LT		 2013 struct inet6_dev *idev;
2014
222f1806
LC		 2015 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2016 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2017 set = 1;
2018 break;
2019 }
2020
222f1806
LC		 2021 if (!set) {
2022
1da177e4
LT		 2023 /*
2024 * Use linklevel address if unconfigured.
2025 *
2026 * use ipv6_get_lladdr if/when it's get exported
2027 */
2028
8814c4b5 2029 rcu_read_lock();
1da177e4
LT		 2030 if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
2031 struct inet6_ifaddr *ifp;
2032
2033 read_lock_bh(&idev->lock);
222f1806
LC		 2034 for (ifp = idev->addr_list; ifp;
2035 ifp = ifp->if_next) {
2036 if (ifp->scope == IFA_LINK
2037 && !(ifp->
2038 flags & IFA_F_TENTATIVE)) {
2039 ipv6_addr_copy(&pkt_dev->
2040 cur_in6_saddr,
2041 &ifp->addr);
1da177e4
LT		 2042 err = 0;
2043 break;
2044 }
2045 }
2046 read_unlock_bh(&idev->lock);
2047 }
8814c4b5 2048 rcu_read_unlock();
222f1806 2049 if (err)
25a8b254
DM		 2050 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2051 "address not availble.\n");
1da177e4
LT		 2052 }
2053#endif
222f1806 2054 } else {
1da177e4
LT		 2055 pkt_dev->saddr_min = 0;
2056 pkt_dev->saddr_max = 0;
2057 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2058
2059 struct in_device *in_dev;
1da177e4
LT		 2060
2061 rcu_read_lock();
e5ed6399 2062 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2063 if (in_dev) {
2064 if (in_dev->ifa_list) {
222f1806
LC		 2065 pkt_dev->saddr_min =
2066 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2067 pkt_dev->saddr_max = pkt_dev->saddr_min;
2068 }
1da177e4
LT		 2069 }
2070 rcu_read_unlock();
222f1806 2071 } else {
1da177e4
LT		 2072 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2073 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2074 }
2075
2076 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2077 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2078 }
222f1806
LC		 2079 /* Initialize current values. */
2080 pkt_dev->cur_dst_mac_offset = 0;
2081 pkt_dev->cur_src_mac_offset = 0;
2082 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2083 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2084 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2085 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2086 pkt_dev->nflows = 0;
2087}
2088
fd29cf72 2089static inline s64 delta_ns(ktime_t a, ktime_t b)
1da177e4 2090{
fd29cf72
SH		 2091 return ktime_to_ns(ktime_sub(a, b));
2092}
2093
2094static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2095{
2096 ktime_t start, now;
2097 s64 dt;
2098
2099 start = now = ktime_now();
1da177e4 2100
fd29cf72 2101 while ((dt = delta_ns(spin_until, now)) > 0) {
b4099fab 2102 /* TODO: optimize sleeping behavior */
fd29cf72 2103 if (dt > TICK_NSEC)
121caf57 2104 schedule_timeout_interruptible(1);
fd29cf72 2105 else if (dt > 100*NSEC_PER_USEC) {
1da177e4
LT		 2106 if (!pkt_dev->running)
2107 return;
2108 if (need_resched())
2109 schedule();
2110 }
2111
fd29cf72 2112 now = ktime_now();
1da177e4
LT		 2113 }
2114
fd29cf72 2115 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(now, start));
1da177e4
LT		 2116}
2117
16dab72f
JHS		 2118static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2119{
a553e4a6 2120 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2121 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2122 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2123 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2124}
2125
648fda74 2126static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2127{
648fda74 2128 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2129}
2130
2131static inline int f_pick(struct pktgen_dev *pkt_dev)
2132{
2133 int flow = pkt_dev->curfl;
2134
2135 if (pkt_dev->flags & F_FLOW_SEQ) {
2136 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2137 /* reset time */
2138 pkt_dev->flows[flow].count = 0;
1211a645 2139 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2140 pkt_dev->curfl += 1;
2141 if (pkt_dev->curfl >= pkt_dev->cflows)
2142 pkt_dev->curfl = 0; /*reset */
2143 }
2144 } else {
2145 flow = random32() % pkt_dev->cflows;
1211a645 2146 pkt_dev->curfl = flow;
007a531b 2147
1211a645 2148 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2149 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2150 pkt_dev->flows[flow].flags = 0;
2151 }
007a531b
JHS		 2152 }
2153
2154 return pkt_dev->curfl;
2155}
2156
a553e4a6
JHS		 2157
2158#ifdef CONFIG_XFRM
2159/* If there was already an IPSEC SA, we keep it as is, else
2160 * we go look for it ...
2161*/
fea1ab0f 2162static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2163{
2164 struct xfrm_state *x = pkt_dev->flows[flow].x;
2165 if (!x) {
2166 /*slow path: we dont already have xfrm_state*/
5447c5e4
AD		 2167 x = xfrm_stateonly_find(&init_net,
2168 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2169 (xfrm_address_t *)&pkt_dev->cur_saddr,
2170 AF_INET,
2171 pkt_dev->ipsmode,
2172 pkt_dev->ipsproto, 0);
2173 if (x) {
2174 pkt_dev->flows[flow].x = x;
2175 set_pkt_overhead(pkt_dev);
2176 pkt_dev->pkt_overhead+=x->props.header_len;
2177 }
2178
2179 }
2180}
2181#endif
fd2ea0a7
DM		 2182static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2183{
e6fce5b9
RO		 2184
2185 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2186 pkt_dev->cur_queue_map = smp_processor_id();
2187
2188 else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2189 __u16 t;
2190 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2191 t = random32() %
2192 (pkt_dev->queue_map_max -
2193 pkt_dev->queue_map_min + 1)
2194 + pkt_dev->queue_map_min;
2195 } else {
2196 t = pkt_dev->cur_queue_map + 1;
2197 if (t > pkt_dev->queue_map_max)
2198 t = pkt_dev->queue_map_min;
2199 }
2200 pkt_dev->cur_queue_map = t;
2201 }
bfdbc0ac 2202 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2203}
2204
1da177e4
LT		 2205/* Increment/randomize headers according to flags and current values
2206 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2207 */
222f1806
LC		 2208static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2209{
2210 __u32 imn;
2211 __u32 imx;
2212 int flow = 0;
1da177e4 2213
007a531b
JHS		 2214 if (pkt_dev->cflows)
2215 flow = f_pick(pkt_dev);
1da177e4
LT		 2216
2217 /* Deal with source MAC */
222f1806
LC		 2218 if (pkt_dev->src_mac_count > 1) {
2219 __u32 mc;
2220 __u32 tmp;
2221
2222 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2223 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2224 else {
2225 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2226 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2227 pkt_dev->src_mac_count)
2228 pkt_dev->cur_src_mac_offset = 0;
2229 }
2230
2231 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2232 pkt_dev->hh[11] = tmp;
2233 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2234 pkt_dev->hh[10] = tmp;
2235 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2236 pkt_dev->hh[9] = tmp;
2237 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2238 pkt_dev->hh[8] = tmp;
2239 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2240 pkt_dev->hh[7] = tmp;
2241 }
2242
2243 /* Deal with Destination MAC */
2244 if (pkt_dev->dst_mac_count > 1) {
2245 __u32 mc;
2246 __u32 tmp;
2247
2248 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2249 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2250
2251 else {
2252 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2253 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2254 pkt_dev->dst_mac_count) {
2255 pkt_dev->cur_dst_mac_offset = 0;
2256 }
2257 }
2258
2259 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2260 pkt_dev->hh[5] = tmp;
2261 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2262 pkt_dev->hh[4] = tmp;
2263 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2264 pkt_dev->hh[3] = tmp;
2265 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2266 pkt_dev->hh[2] = tmp;
2267 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2268 pkt_dev->hh[1] = tmp;
2269 }
2270
ca6549af
SW		 2271 if (pkt_dev->flags & F_MPLS_RND) {
2272 unsigned i;
e71a4783 2273 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2274 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2275 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2276 ((__force __be32)random32() &
ca6549af
SW		 2277 htonl(0x000fffff));
2278 }
2279
34954ddc 2280 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2281 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2282 }
2283
2284 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2285 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2286 }
2287
222f1806
LC		 2288 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2289 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2290 pkt_dev->cur_udp_src = random32() %
2291 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2292 + pkt_dev->udp_src_min;
222f1806
LC		 2293
2294 else {
1da177e4
LT		 2295 pkt_dev->cur_udp_src++;
2296 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2297 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2298 }
2299 }
2300
2301 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2302 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2303 pkt_dev->cur_udp_dst = random32() %
2304 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2305 + pkt_dev->udp_dst_min;
222f1806 2306 } else {
1da177e4 2307 pkt_dev->cur_udp_dst++;
222f1806 2308 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2309 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2310 }
2311 }
1da177e4
LT		 2312
2313 if (!(pkt_dev->flags & F_IPV6)) {
2314
222f1806
LC		 2315 if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
2316 ntohl(pkt_dev->
2317 saddr_max))) {
1da177e4 2318 __u32 t;
222f1806 2319 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2320 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2321 else {
2322 t = ntohl(pkt_dev->cur_saddr);
2323 t++;
2324 if (t > imx) {
2325 t = imn;
2326 }
2327 }
2328 pkt_dev->cur_saddr = htonl(t);
2329 }
222f1806 2330
007a531b 2331 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2332 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2333 } else {
252e3346
AV		 2334 imn = ntohl(pkt_dev->daddr_min);
2335 imx = ntohl(pkt_dev->daddr_max);
2336 if (imn < imx) {
1da177e4 2337 __u32 t;
252e3346 2338 __be32 s;
1da177e4
LT		 2339 if (pkt_dev->flags & F_IPDST_RND) {
2340
5fa6fc76 2341 t = random32() % (imx - imn) + imn;
252e3346 2342 s = htonl(t);
1da177e4 2343
21cf2253
JP		 2344 while (ipv4_is_loopback(s) ||
2345 ipv4_is_multicast(s) ||
1e637c74 2346 ipv4_is_lbcast(s) ||
21cf2253
JP		 2347 ipv4_is_zeronet(s) ||
2348 ipv4_is_local_multicast(s)) {
5fa6fc76 2349 t = random32() % (imx - imn) + imn;
252e3346 2350 s = htonl(t);
1da177e4 2351 }
252e3346
AV		 2352 pkt_dev->cur_daddr = s;
2353 } else {
1da177e4
LT		 2354 t = ntohl(pkt_dev->cur_daddr);
2355 t++;
2356 if (t > imx) {
2357 t = imn;
2358 }
2359 pkt_dev->cur_daddr = htonl(t);
2360 }
2361 }
222f1806 2362 if (pkt_dev->cflows) {
007a531b 2363 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2364 pkt_dev->flows[flow].cur_daddr =
2365 pkt_dev->cur_daddr;
a553e4a6
JHS		 2366#ifdef CONFIG_XFRM
2367 if (pkt_dev->flags & F_IPSEC_ON)
2368 get_ipsec_sa(pkt_dev, flow);
2369#endif
1da177e4
LT		 2370 pkt_dev->nflows++;
2371 }
2372 }
222f1806
LC		 2373 } else { /* IPV6 * */
2374
2375 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2376 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2377 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2378 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2379 else {
2380 int i;
2381
2382 /* Only random destinations yet */
2383
222f1806 2384 for (i = 0; i < 4; i++) {
1da177e4 2385 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2386 (((__force __be32)random32() |
222f1806
LC		 2387 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2388 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2389 }
222f1806 2390 }
1da177e4
LT		 2391 }
2392
222f1806
LC		 2393 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2394 __u32 t;
2395 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2396 t = random32() %
2397 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2398 + pkt_dev->min_pkt_size;
222f1806 2399 } else {
1da177e4 2400 t = pkt_dev->cur_pkt_size + 1;
222f1806 2401 if (t > pkt_dev->max_pkt_size)
1da177e4 2402 t = pkt_dev->min_pkt_size;
222f1806
LC		 2403 }
2404 pkt_dev->cur_pkt_size = t;
2405 }
1da177e4 2406
fd2ea0a7 2407 set_cur_queue_map(pkt_dev);
45b270f8 2408
1da177e4
LT		 2409 pkt_dev->flows[flow].count++;
2410}
2411
a553e4a6
JHS		 2412
2413#ifdef CONFIG_XFRM
2414static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2415{
2416 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2417 int err = 0;
2418 struct iphdr *iph;
2419
2420 if (!x)
2421 return 0;
2422 /* XXX: we dont support tunnel mode for now until
2423 * we resolve the dst issue */
2424 if (x->props.mode != XFRM_MODE_TRANSPORT)
2425 return 0;
2426
2427 spin_lock(&x->lock);
2428 iph = ip_hdr(skb);
2429
13996378 2430 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2431 if (err)
2432 goto error;
2433 err = x->type->output(x, skb);
2434 if (err)
2435 goto error;
2436
2437 x->curlft.bytes +=skb->len;
2438 x->curlft.packets++;
a553e4a6
JHS		 2439error:
2440 spin_unlock(&x->lock);
2441 return err;
2442}
2443
475ac1e4 2444static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2445{
2446 if (pkt_dev->cflows) {
2447 /* let go of the SAs if we have them */
2448 int i = 0;
5b5f792a 2449 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2450 struct xfrm_state *x = pkt_dev->flows[i].x;
2451 if (x) {
2452 xfrm_state_put(x);
2453 pkt_dev->flows[i].x = NULL;
2454 }
2455 }
2456 }
2457}
2458
475ac1e4 2459static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2460 struct sk_buff *skb, __be16 protocol)
2461{
2462 if (pkt_dev->flags & F_IPSEC_ON) {
2463 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2464 int nhead = 0;
2465 if (x) {
2466 int ret;
2467 __u8 *eth;
2468 nhead = x->props.header_len - skb_headroom(skb);
2469 if (nhead >0) {
2470 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2471 if (ret < 0) {
25a8b254
DM		 2472 printk(KERN_ERR "Error expanding "
2473 "ipsec packet %d\n",ret);
b4bb4ac8 2474 goto err;
a553e4a6
JHS		 2475 }
2476 }
2477
2478 /* ipsec is not expecting ll header */
2479 skb_pull(skb, ETH_HLEN);
2480 ret = pktgen_output_ipsec(skb, pkt_dev);
2481 if (ret) {
25a8b254
DM		 2482 printk(KERN_ERR "Error creating ipsec "
2483 "packet %d\n",ret);
b4bb4ac8 2484 goto err;
a553e4a6
JHS		 2485 }
2486 /* restore ll */
2487 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2488 memcpy(eth, pkt_dev->hh, 12);
2489 *(u16 *) & eth[12] = protocol;
2490 }
2491 }
2492 return 1;
b4bb4ac8
IJ		 2493err:
2494 kfree_skb(skb);
2495 return 0;
a553e4a6
JHS		 2496}
2497#endif
2498
ca6549af
SW		 2499static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2500{
2501 unsigned i;
e71a4783 2502 for (i = 0; i < pkt_dev->nr_labels; i++) {
ca6549af
SW		 2503 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2504 }
2505 mpls--;
2506 *mpls |= MPLS_STACK_BOTTOM;
2507}
2508
0f37c605
AV		 2509static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2510 unsigned int prio)
2511{
2512 return htons(id | (cfi << 12) | (prio << 13));
2513}
2514
222f1806
LC		 2515static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2516 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2517{
2518 struct sk_buff *skb = NULL;
2519 __u8 *eth;
2520 struct udphdr *udph;
2521 int datalen, iplen;
2522 struct iphdr *iph;
222f1806 2523 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2524 __be16 protocol = htons(ETH_P_IP);
ca6549af 2525 __be32 *mpls;
34954ddc
FF		 2526 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2527 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2528 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2529 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2530 u16 queue_map;
ca6549af
SW		 2531
2532 if (pkt_dev->nr_labels)
d5f1ce9a 2533 protocol = htons(ETH_P_MPLS_UC);
222f1806 2534
34954ddc 2535 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2536 protocol = htons(ETH_P_8021Q);
34954ddc 2537
64053bee
RO		 2538 /* Update any of the values, used when we're incrementing various
2539 * fields.
2540 */
fd2ea0a7 2541 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2542 mod_cur_headers(pkt_dev);
2543
7ac5459e 2544 datalen = (odev->hard_header_len + 16) & ~0xf;
e470757d
SH		 2545 skb = __netdev_alloc_skb(odev,
2546 pkt_dev->cur_pkt_size + 64
2547 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2548 if (!skb) {
2549 sprintf(pkt_dev->result, "No memory");
2550 return NULL;
2551 }
2552
7ac5459e 2553 skb_reserve(skb, datalen);
1da177e4
LT		 2554
2555 /* Reserve for ethernet and IP header */
2556 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2557 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2558 if (pkt_dev->nr_labels)
2559 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2560
2561 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2562 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2563 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2564 *svlan_tci = build_tci(pkt_dev->svlan_id,
2565 pkt_dev->svlan_cfi,
2566 pkt_dev->svlan_p);
34954ddc 2567 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2568 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2569 }
2570 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2571 *vlan_tci = build_tci(pkt_dev->vlan_id,
2572 pkt_dev->vlan_cfi,
2573 pkt_dev->vlan_p);
34954ddc 2574 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2575 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2576 }
2577
27a884dc 2578 skb->network_header = skb->tail;
b0e380b1 2579 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2580 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2581 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2582 iph = ip_hdr(skb);
2583 udph = udp_hdr(skb);
1da177e4 2584
1da177e4 2585 memcpy(eth, pkt_dev->hh, 12);
252e3346 2586 *(__be16 *) & eth[12] = protocol;
1da177e4 2587
ca6549af
SW		 2588 /* Eth + IPh + UDPh + mpls */
2589 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2590 pkt_dev->pkt_overhead;
222f1806 2591 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2592 datalen = sizeof(struct pktgen_hdr);
222f1806 2593
1da177e4
LT		 2594 udph->source = htons(pkt_dev->cur_udp_src);
2595 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2596 udph->len = htons(datalen + 8); /* DATA + udphdr */
2597 udph->check = 0; /* No checksum */
1da177e4
LT		 2598
2599 iph->ihl = 5;
2600 iph->version = 4;
2601 iph->ttl = 32;
1ca7768c 2602 iph->tos = pkt_dev->tos;
222f1806 2603 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2604 iph->saddr = pkt_dev->cur_saddr;
2605 iph->daddr = pkt_dev->cur_daddr;
2606 iph->frag_off = 0;
2607 iplen = 20 + 8 + datalen;
2608 iph->tot_len = htons(iplen);
2609 iph->check = 0;
222f1806 2610 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2611 skb->protocol = protocol;
b0e380b1 2612 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2613 pkt_dev->pkt_overhead);
1da177e4
LT		 2614 skb->dev = odev;
2615 skb->pkt_type = PACKET_HOST;
2616
222f1806
LC		 2617 if (pkt_dev->nfrags <= 0)
2618 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2619 else {
2620 int frags = pkt_dev->nfrags;
2621 int i;
2622
222f1806
LC		 2623 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2624
1da177e4
LT		 2625 if (frags > MAX_SKB_FRAGS)
2626 frags = MAX_SKB_FRAGS;
222f1806
LC		 2627 if (datalen > frags * PAGE_SIZE) {
2628 skb_put(skb, datalen - frags * PAGE_SIZE);
2629 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2630 }
2631
2632 i = 0;
2633 while (datalen > 0) {
2634 struct page *page = alloc_pages(GFP_KERNEL, 0);
2635 skb_shinfo(skb)->frags[i].page = page;
2636 skb_shinfo(skb)->frags[i].page_offset = 0;
2637 skb_shinfo(skb)->frags[i].size =
222f1806 2638 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2639 datalen -= skb_shinfo(skb)->frags[i].size;
2640 skb->len += skb_shinfo(skb)->frags[i].size;
2641 skb->data_len += skb_shinfo(skb)->frags[i].size;
2642 i++;
2643 skb_shinfo(skb)->nr_frags = i;
2644 }
2645
2646 while (i < frags) {
2647 int rem;
2648
2649 if (i == 0)
2650 break;
2651
2652 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2653 if (rem == 0)
2654 break;
2655
2656 skb_shinfo(skb)->frags[i - 1].size -= rem;
2657
222f1806
LC		 2658 skb_shinfo(skb)->frags[i] =
2659 skb_shinfo(skb)->frags[i - 1];
1da177e4 2660 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2661 skb_shinfo(skb)->frags[i].page =
2662 skb_shinfo(skb)->frags[i - 1].page;
2663 skb_shinfo(skb)->frags[i].page_offset +=
2664 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2665 skb_shinfo(skb)->frags[i].size = rem;
2666 i++;
2667 skb_shinfo(skb)->nr_frags = i;
2668 }
2669 }
2670
222f1806
LC		 2671 /* Stamp the time, and sequence number, convert them to network byte order */
2672
2673 if (pgh) {
2674 struct timeval timestamp;
2675
2676 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2677 pgh->seq_num = htonl(pkt_dev->seq_num);
2678
2679 do_gettimeofday(&timestamp);
2680 pgh->tv_sec = htonl(timestamp.tv_sec);
2681 pgh->tv_usec = htonl(timestamp.tv_usec);
2682 }
1da177e4 2683
a553e4a6
JHS		 2684#ifdef CONFIG_XFRM
2685 if (!process_ipsec(pkt_dev, skb, protocol))
2686 return NULL;
2687#endif
2688
1da177e4
LT		 2689 return skb;
2690}
2691
2692/*
4ec93edb 2693 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2694 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2695 *
4ec93edb 2696 * Slightly modified for kernel.
1da177e4
LT		 2697 * Should be candidate for net/ipv4/utils.c
2698 * --ro
2699 */
2700
222f1806 2701static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2702{
2703 unsigned int i;
222f1806 2704 unsigned int len = 0;
1da177e4
LT		 2705 unsigned long u;
2706 char suffix[16];
222f1806
LC		 2707 unsigned int prefixlen = 0;
2708 unsigned int suffixlen = 0;
252e3346 2709 __be32 tmp;
cfcabdcc 2710 char *pos;
1da177e4 2711
222f1806
LC		 2712 for (i = 0; i < 16; i++)
2713 ip[i] = 0;
1da177e4
LT		 2714
2715 for (;;) {
2716 if (*s == ':') {
2717 len++;
222f1806
LC		 2718 if (s[1] == ':') { /* Found "::", skip to part 2 */
2719 s += 2;
1da177e4
LT		 2720 len++;
2721 break;
2722 }
2723 s++;
2724 }
1da177e4 2725
cfcabdcc
SH		 2726 u = simple_strtoul(s, &pos, 16);
2727 i = pos - s;
222f1806
LC		 2728 if (!i)
2729 return 0;
2730 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2731
2732 /* the last 4 bytes may be written as IPv4 address */
2733
2734 tmp = in_aton(s);
222f1806
LC		 2735 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2736 return i + len;
1da177e4
LT		 2737 }
2738 ip[prefixlen++] = (u >> 8);
2739 ip[prefixlen++] = (u & 255);
222f1806
LC		 2740 s += i;
2741 len += i;
2742 if (prefixlen == 16)
1da177e4
LT		 2743 return len;
2744 }
2745
2746/* part 2, after "::" */
2747 for (;;) {
2748 if (*s == ':') {
222f1806 2749 if (suffixlen == 0)
1da177e4
LT		 2750 break;
2751 s++;
2752 len++;
222f1806 2753 } else if (suffixlen != 0)
1da177e4 2754 break;
cfcabdcc
SH		 2755
2756 u = simple_strtol(s, &pos, 16);
2757 i = pos - s;
1da177e4 2758 if (!i) {
222f1806
LC		 2759 if (*s)
2760 len--;
1da177e4
LT		 2761 break;
2762 }
222f1806 2763 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2764 tmp = in_aton(s);
222f1806
LC		 2765 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2766 sizeof(tmp));
2767 suffixlen += 4;
2768 len += strlen(s);
1da177e4
LT		 2769 break;
2770 }
2771 suffix[suffixlen++] = (u >> 8);
2772 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2773 s += i;
2774 len += i;
2775 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2776 break;
2777 }
222f1806
LC		 2778 for (i = 0; i < suffixlen; i++)
2779 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2780 return len;
2781}
2782
222f1806
LC		 2783static char tohex(char hexdigit)
2784{
2785 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2786}
2787
222f1806
LC		 2788static int fmt_xlong(char *s, unsigned int i)
2789{
2790 char *bak = s;
2791 *s = tohex((i >> 12) & 0xf);
2792 if (s != bak || *s != '0')
2793 ++s;
2794 *s = tohex((i >> 8) & 0xf);
2795 if (s != bak || *s != '0')
2796 ++s;
2797 *s = tohex((i >> 4) & 0xf);
2798 if (s != bak || *s != '0')
2799 ++s;
2800 *s = tohex(i & 0xf);
2801 return s - bak + 1;
1da177e4
LT		 2802}
2803
222f1806
LC		 2804static unsigned int fmt_ip6(char *s, const char ip[16])
2805{
1da177e4
LT		 2806 unsigned int len;
2807 unsigned int i;
2808 unsigned int temp;
2809 unsigned int compressing;
2810 int j;
2811
222f1806
LC		 2812 len = 0;
2813 compressing = 0;
2814 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2815
2816#ifdef V4MAPPEDPREFIX
222f1806
LC		 2817 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2818 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2819 temp = strlen(s);
2820 return len + temp;
1da177e4
LT		 2821 }
2822#endif
222f1806
LC		 2823 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2824 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2825 if (temp == 0) {
2826 if (!compressing) {
222f1806
LC		 2827 compressing = 1;
2828 if (j == 0) {
2829 *s++ = ':';
2830 ++len;
1da177e4
LT		 2831 }
2832 }
2833 } else {
2834 if (compressing) {
222f1806
LC		 2835 compressing = 0;
2836 *s++ = ':';
2837 ++len;
1da177e4 2838 }
222f1806
LC		 2839 i = fmt_xlong(s, temp);
2840 len += i;
2841 s += i;
2842 if (j < 14) {
1da177e4
LT		 2843 *s++ = ':';
2844 ++len;
2845 }
2846 }
2847 }
2848 if (compressing) {
222f1806
LC		 2849 *s++ = ':';
2850 ++len;
1da177e4 2851 }
222f1806 2852 *s = 0;
1da177e4
LT		 2853 return len;
2854}
2855
222f1806
LC		 2856static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2857 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2858{
2859 struct sk_buff *skb = NULL;
2860 __u8 *eth;
2861 struct udphdr *udph;
2862 int datalen;
2863 struct ipv6hdr *iph;
222f1806 2864 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2865 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2866 __be32 *mpls;
34954ddc
FF		 2867 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2868 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2869 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2870 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2871 u16 queue_map;
ca6549af
SW		 2872
2873 if (pkt_dev->nr_labels)
d5f1ce9a 2874 protocol = htons(ETH_P_MPLS_UC);
64053bee 2875
34954ddc 2876 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2877 protocol = htons(ETH_P_8021Q);
34954ddc 2878
64053bee
RO		 2879 /* Update any of the values, used when we're incrementing various
2880 * fields.
2881 */
fd2ea0a7 2882 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2883 mod_cur_headers(pkt_dev);
2884
e470757d
SH		 2885 skb = __netdev_alloc_skb(odev,
2886 pkt_dev->cur_pkt_size + 64
2887 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2888 if (!skb) {
2889 sprintf(pkt_dev->result, "No memory");
2890 return NULL;
2891 }
2892
2893 skb_reserve(skb, 16);
2894
2895 /* Reserve for ethernet and IP header */
2896 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2897 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2898 if (pkt_dev->nr_labels)
2899 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2900
2901 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2902 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2903 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2904 *svlan_tci = build_tci(pkt_dev->svlan_id,
2905 pkt_dev->svlan_cfi,
2906 pkt_dev->svlan_p);
34954ddc 2907 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2908 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2909 }
2910 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2911 *vlan_tci = build_tci(pkt_dev->vlan_id,
2912 pkt_dev->vlan_cfi,
2913 pkt_dev->vlan_p);
34954ddc 2914 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2915 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2916 }
2917
27a884dc 2918 skb->network_header = skb->tail;
b0e380b1 2919 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2920 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2921 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2922 iph = ipv6_hdr(skb);
2923 udph = udp_hdr(skb);
1da177e4 2924
1da177e4 2925 memcpy(eth, pkt_dev->hh, 12);
252e3346 2926 *(__be16 *) & eth[12] = protocol;
64053bee 2927
ca6549af
SW		 2928 /* Eth + IPh + UDPh + mpls */
2929 datalen = pkt_dev->cur_pkt_size - 14 -
2930 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2931 pkt_dev->pkt_overhead;
1da177e4 2932
222f1806 2933 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2934 datalen = sizeof(struct pktgen_hdr);
2935 if (net_ratelimit())
222f1806
LC		 2936 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2937 datalen);
1da177e4
LT		 2938 }
2939
2940 udph->source = htons(pkt_dev->cur_udp_src);
2941 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2942 udph->len = htons(datalen + sizeof(struct udphdr));
2943 udph->check = 0; /* No checksum */
1da177e4 2944
d5f1ce9a 2945 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2946
1ca7768c
FF		 2947 if (pkt_dev->traffic_class) {
2948 /* Version + traffic class + flow (0) */
252e3346 2949 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2950 }
2951
1da177e4
LT		 2952 iph->hop_limit = 32;
2953
2954 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2955 iph->nexthdr = IPPROTO_UDP;
2956
2957 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2958 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2959
b0e380b1 2960 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2961 pkt_dev->pkt_overhead);
ca6549af 2962 skb->protocol = protocol;
1da177e4
LT		 2963 skb->dev = odev;
2964 skb->pkt_type = PACKET_HOST;
2965
222f1806
LC		 2966 if (pkt_dev->nfrags <= 0)
2967 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2968 else {
2969 int frags = pkt_dev->nfrags;
2970 int i;
2971
222f1806
LC		 2972 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2973
1da177e4
LT		 2974 if (frags > MAX_SKB_FRAGS)
2975 frags = MAX_SKB_FRAGS;
222f1806
LC		 2976 if (datalen > frags * PAGE_SIZE) {
2977 skb_put(skb, datalen - frags * PAGE_SIZE);
2978 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2979 }
2980
2981 i = 0;
2982 while (datalen > 0) {
2983 struct page *page = alloc_pages(GFP_KERNEL, 0);
2984 skb_shinfo(skb)->frags[i].page = page;
2985 skb_shinfo(skb)->frags[i].page_offset = 0;
2986 skb_shinfo(skb)->frags[i].size =
222f1806 2987 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2988 datalen -= skb_shinfo(skb)->frags[i].size;
2989 skb->len += skb_shinfo(skb)->frags[i].size;
2990 skb->data_len += skb_shinfo(skb)->frags[i].size;
2991 i++;
2992 skb_shinfo(skb)->nr_frags = i;
2993 }
2994
2995 while (i < frags) {
2996 int rem;
2997
2998 if (i == 0)
2999 break;
3000
3001 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3002 if (rem == 0)
3003 break;
3004
3005 skb_shinfo(skb)->frags[i - 1].size -= rem;
3006
222f1806
LC		 3007 skb_shinfo(skb)->frags[i] =
3008 skb_shinfo(skb)->frags[i - 1];
1da177e4 3009 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3010 skb_shinfo(skb)->frags[i].page =
3011 skb_shinfo(skb)->frags[i - 1].page;
3012 skb_shinfo(skb)->frags[i].page_offset +=
3013 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3014 skb_shinfo(skb)->frags[i].size = rem;
3015 i++;
3016 skb_shinfo(skb)->nr_frags = i;
3017 }
3018 }
3019
222f1806 3020 /* Stamp the time, and sequence number, convert them to network byte order */
1da177e4 3021 /* should we update cloned packets too ? */
222f1806
LC		 3022 if (pgh) {
3023 struct timeval timestamp;
3024
3025 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3026 pgh->seq_num = htonl(pkt_dev->seq_num);
3027
3028 do_gettimeofday(&timestamp);
3029 pgh->tv_sec = htonl(timestamp.tv_sec);
3030 pgh->tv_usec = htonl(timestamp.tv_usec);
3031 }
34954ddc 3032 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3033
1da177e4
LT		 3034 return skb;
3035}
3036
475ac1e4
SH		 3037static struct sk_buff *fill_packet(struct net_device *odev,
3038 struct pktgen_dev *pkt_dev)
1da177e4 3039{
222f1806 3040 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3041 return fill_packet_ipv6(odev, pkt_dev);
3042 else
3043 return fill_packet_ipv4(odev, pkt_dev);
3044}
3045
222f1806 3046static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3047{
222f1806
LC		 3048 pkt_dev->seq_num = 1;
3049 pkt_dev->idle_acc = 0;
1da177e4 3050 pkt_dev->sofar = 0;
222f1806
LC		 3051 pkt_dev->tx_bytes = 0;
3052 pkt_dev->errors = 0;
1da177e4
LT		 3053}
3054
3055/* Set up structure for sending pkts, clear counters */
3056
3057static void pktgen_run(struct pktgen_thread *t)
3058{
c26a8016 3059 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3060 int started = 0;
3061
25c4e53a 3062 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3063
3064 if_lock(t);
c26a8016 3065 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3066
3067 /*
3068 * setup odev and create initial packet.
3069 */
3070 pktgen_setup_inject(pkt_dev);
3071
222f1806 3072 if (pkt_dev->odev) {
1da177e4 3073 pktgen_clear_counters(pkt_dev);
222f1806 3074 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3075 pkt_dev->skb = NULL;
fd29cf72
SH		 3076 pkt_dev->started_at =
3077 pkt_dev->next_tx = ktime_now();
3078
16dab72f 3079 set_pkt_overhead(pkt_dev);
222f1806 3080
1da177e4
LT		 3081 strcpy(pkt_dev->result, "Starting");
3082 started++;
222f1806 3083 } else
1da177e4
LT		 3084 strcpy(pkt_dev->result, "Error starting");
3085 }
3086 if_unlock(t);
222f1806
LC		 3087 if (started)
3088 t->control &= ~(T_STOP);
1da177e4
LT		 3089}
3090
3091static void pktgen_stop_all_threads_ifs(void)
3092{
cdcdbe0b 3093 struct pktgen_thread *t;
1da177e4 3094
25c4e53a 3095 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3096
6146e6a4 3097 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3098
3099 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3100 t->control |= T_STOP;
cdcdbe0b 3101
6146e6a4 3102 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3103}
3104
648fda74 3105static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3106{
648fda74 3107 const struct pktgen_dev *pkt_dev;
1da177e4 3108
c26a8016 3109 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3110 if (pkt_dev->running)
3111 return 1;
3112 return 0;
1da177e4
LT		 3113}
3114
222f1806 3115static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3116{
222f1806 3117 if_lock(t);
1da177e4 3118
222f1806 3119 while (thread_is_running(t)) {
1da177e4 3120
222f1806 3121 if_unlock(t);
1da177e4 3122
222f1806 3123 msleep_interruptible(100);
1da177e4 3124
222f1806
LC		 3125 if (signal_pending(current))
3126 goto signal;
3127 if_lock(t);
3128 }
3129 if_unlock(t);
3130 return 1;
3131signal:
3132 return 0;
1da177e4
LT		 3133}
3134
3135static int pktgen_wait_all_threads_run(void)
3136{
cdcdbe0b 3137 struct pktgen_thread *t;
1da177e4 3138 int sig = 1;
222f1806 3139
6146e6a4 3140 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3141
3142 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3143 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3144 if (sig == 0)
3145 break;
1da177e4 3146 }
cdcdbe0b
LC		 3147
3148 if (sig == 0)
3149 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3150 t->control |= (T_STOP);
cdcdbe0b 3151
6146e6a4 3152 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3153 return sig;
3154}
3155
3156static void pktgen_run_all_threads(void)
3157{
cdcdbe0b 3158 struct pktgen_thread *t;
1da177e4 3159
25c4e53a 3160 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3161
6146e6a4 3162 mutex_lock(&pktgen_thread_lock);
1da177e4 3163
cdcdbe0b 3164 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3165 t->control |= (T_RUN);
cdcdbe0b 3166
6146e6a4 3167 mutex_unlock(&pktgen_thread_lock);
1da177e4 3168
222f1806
LC		 3169 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3170
1da177e4
LT		 3171 pktgen_wait_all_threads_run();
3172}
3173
eb37b41c
JB		 3174static void pktgen_reset_all_threads(void)
3175{
3176 struct pktgen_thread *t;
3177
3178 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3179
3180 mutex_lock(&pktgen_thread_lock);
3181
3182 list_for_each_entry(t, &pktgen_threads, th_list)
3183 t->control |= (T_REMDEVALL);
3184
3185 mutex_unlock(&pktgen_thread_lock);
3186
3187 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3188
3189 pktgen_wait_all_threads_run();
3190}
3191
1da177e4
LT		 3192static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3193{
fd29cf72 3194 __u64 bps, mbps, pps;
222f1806 3195 char *p = pkt_dev->result;
fd29cf72
SH		 3196 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3197 pkt_dev->started_at);
3198 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3199
3200 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3201 (unsigned long long)ktime_to_us(elapsed),
3202 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3203 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3204 (unsigned long long)pkt_dev->sofar,
3205 pkt_dev->cur_pkt_size, nr_frags);
3206
fd29cf72
SH		 3207 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3208 ktime_to_ns(elapsed));
222f1806
LC		 3209
3210 bps = pps * 8 * pkt_dev->cur_pkt_size;
3211
3212 mbps = bps;
3213 do_div(mbps, 1000000);
3214 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3215 (unsigned long long)pps,
3216 (unsigned long long)mbps,
3217 (unsigned long long)bps,
3218 (unsigned long long)pkt_dev->errors);
1da177e4 3219}
1da177e4
LT		 3220
3221/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3222static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3223{
222f1806 3224 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3225
222f1806 3226 if (!pkt_dev->running) {
25a8b254
DM		 3227 printk(KERN_WARNING "pktgen: interface: %s is already "
3228 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3229 return -EINVAL;
3230 }
1da177e4 3231
3bda06a3
SH		 3232 kfree_skb(pkt_dev->skb);
3233 pkt_dev->skb = NULL;
fd29cf72 3234 pkt_dev->stopped_at = ktime_now();
222f1806 3235 pkt_dev->running = 0;
1da177e4 3236
95ed63f7 3237 show_results(pkt_dev, nr_frags);
1da177e4 3238
222f1806 3239 return 0;
1da177e4
LT		 3240}
3241
222f1806 3242static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3243{
c26a8016 3244 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3245
1da177e4
LT		 3246 if_lock(t);
3247
c26a8016
LC		 3248 list_for_each_entry(pkt_dev, &t->if_list, list) {
3249 if (!pkt_dev->running)
222f1806
LC		 3250 continue;
3251 if (best == NULL)
c26a8016 3252 best = pkt_dev;
fd29cf72 3253 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3254 best = pkt_dev;
1da177e4
LT		 3255 }
3256 if_unlock(t);
222f1806 3257 return best;
1da177e4
LT		 3258}
3259
222f1806
LC		 3260static void pktgen_stop(struct pktgen_thread *t)
3261{
c26a8016 3262 struct pktgen_dev *pkt_dev;
1da177e4 3263
25c4e53a 3264 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3265
222f1806 3266 if_lock(t);
1da177e4 3267
c26a8016
LC		 3268 list_for_each_entry(pkt_dev, &t->if_list, list) {
3269 pktgen_stop_device(pkt_dev);
95ed63f7 3270 }
1da177e4 3271
222f1806 3272 if_unlock(t);
1da177e4
LT		 3273}
3274
95ed63f7
AK		 3275/*
3276 * one of our devices needs to be removed - find it
3277 * and remove it
3278 */
3279static void pktgen_rem_one_if(struct pktgen_thread *t)
3280{
c26a8016
LC		 3281 struct list_head *q, *n;
3282 struct pktgen_dev *cur;
95ed63f7 3283
25c4e53a 3284 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3285
3286 if_lock(t);
3287
c26a8016
LC		 3288 list_for_each_safe(q, n, &t->if_list) {
3289 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3290
222f1806
LC		 3291 if (!cur->removal_mark)
3292 continue;
95ed63f7 3293
86dc1ad2 3294 kfree_skb(cur->skb);
95ed63f7
AK		 3295 cur->skb = NULL;
3296
3297 pktgen_remove_device(t, cur);
3298
3299 break;
3300 }
3301
3302 if_unlock(t);
3303}
3304
222f1806 3305static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3306{
c26a8016
LC		 3307 struct list_head *q, *n;
3308 struct pktgen_dev *cur;
222f1806
LC		 3309
3310 /* Remove all devices, free mem */
95ed63f7 3311
25c4e53a 3312 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3313 if_lock(t);
1da177e4 3314
c26a8016
LC		 3315 list_for_each_safe(q, n, &t->if_list) {
3316 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3317
86dc1ad2 3318 kfree_skb(cur->skb);
95ed63f7
AK		 3319 cur->skb = NULL;
3320
1da177e4
LT		 3321 pktgen_remove_device(t, cur);
3322 }
3323
222f1806 3324 if_unlock(t);
1da177e4
LT		 3325}
3326
222f1806 3327static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3328{
222f1806 3329 /* Remove from the thread list */
1da177e4 3330
ee74baa7 3331 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3332
6146e6a4 3333 mutex_lock(&pktgen_thread_lock);
1da177e4 3334
cdcdbe0b
LC		 3335 list_del(&t->th_list);
3336
6146e6a4 3337 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3338}
3339
3791decb
SH		 3340static void idle(struct pktgen_dev *pkt_dev)
3341{
fd29cf72 3342 ktime_t idle_start = ktime_now();
3791decb
SH		 3343
3344 if (need_resched())
3345 schedule();
3346 else
3347 cpu_relax();
3348
fd29cf72 3349 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3350}
3351
fd29cf72 3352
475ac1e4 3353static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3354{
00829823
SH		 3355 struct net_device *odev = pkt_dev->odev;
3356 int (*xmit)(struct sk_buff *, struct net_device *)
3357 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3358 struct netdev_queue *txq;
fd2ea0a7 3359 u16 queue_map;
1da177e4
LT		 3360 int ret;
3361
fd29cf72
SH		 3362 if (pkt_dev->delay) {
3363 if (ktime_lt(ktime_now(), pkt_dev->next_tx))
3364 spin(pkt_dev, pkt_dev->next_tx);
1da177e4
LT		 3365
3366 /* This is max DELAY, this has special meaning of
3367 * "never transmit"
3368 */
fd29cf72
SH		 3369 if (pkt_dev->delay == ULLONG_MAX) {
3370 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3371 return;
1da177e4
LT		 3372 }
3373 }
222f1806 3374
fd2ea0a7
DM		 3375 if (!pkt_dev->skb) {
3376 set_cur_queue_map(pkt_dev);
3377 queue_map = pkt_dev->cur_queue_map;
3378 } else {
3379 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3380 }
3381
3382 txq = netdev_get_tx_queue(odev, queue_map);
3791decb
SH		 3383 /* Did we saturate the queue already? */
3384 if (netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)) {
3385 /* If device is down, then all queues are permnantly frozen */
3386 if (netif_running(odev))
3387 idle(pkt_dev);
3388 else
1da177e4 3389 pktgen_stop_device(pkt_dev);
3791decb 3390 return;
1da177e4 3391 }
222f1806 3392
7d7bb1cf
SH		 3393 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3394 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3395 /* build a new pkt */
3396 kfree_skb(pkt_dev->skb);
3397
3398 pkt_dev->skb = fill_packet(odev, pkt_dev);
3399 if (pkt_dev->skb == NULL) {
3400 printk(KERN_ERR "pktgen: ERROR: couldn't "
3401 "allocate skb in fill_packet.\n");
3402 schedule();
3403 pkt_dev->clone_count--; /* back out increment, OOM */
3404 return;
1da177e4 3405 }
7d7bb1cf
SH		 3406
3407 pkt_dev->allocated_skbs++;
3408 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3409 }
95ed63f7 3410
fd2ea0a7
DM		 3411 /* fill_packet() might have changed the queue */
3412 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3413 txq = netdev_get_tx_queue(odev, queue_map);
3414
3415 __netif_tx_lock_bh(txq);
3791decb
SH		 3416 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
3417 pkt_dev->last_ok = 0;
3418 else {
1da177e4 3419 atomic_inc(&(pkt_dev->skb->users));
5b8db2f5
SH		 3420
3421 retry_now:
00829823 3422 ret = (*xmit)(pkt_dev->skb, odev);
5b8db2f5
SH		 3423 switch (ret) {
3424 case NETDEV_TX_OK:
08baf561 3425 txq_trans_update(txq);
222f1806 3426 pkt_dev->last_ok = 1;
1da177e4
LT		 3427 pkt_dev->sofar++;
3428 pkt_dev->seq_num++;
3429 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
5b8db2f5
SH		 3430 break;
3431 case NETDEV_TX_LOCKED:
1da177e4
LT		 3432 cpu_relax();
3433 goto retry_now;
5b8db2f5
SH		 3434 default: /* Drivers are not supposed to return other values! */
3435 if (net_ratelimit())
3436 pr_info("pktgen: %s xmit error: %d\n",
3437 odev->name, ret);
1da177e4 3438 pkt_dev->errors++;
5b8db2f5
SH		 3439 /* fallthru */
3440 case NETDEV_TX_BUSY:
3441 /* Retry it next time */
3442 atomic_dec(&(pkt_dev->skb->users));
1da177e4
LT		 3443 pkt_dev->last_ok = 0;
3444 }
3445
fd29cf72
SH		 3446 if (pkt_dev->delay)
3447 pkt_dev->next_tx = ktime_add_ns(ktime_now(),
3448 pkt_dev->delay);
222f1806 3449 }
fd2ea0a7 3450 __netif_tx_unlock_bh(txq);
222f1806 3451
1da177e4
LT		 3452 /* If pkt_dev->count is zero, then run forever */
3453 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
3454 if (atomic_read(&(pkt_dev->skb->users)) != 1) {
fd29cf72 3455 ktime_t idle_start = ktime_now();
1da177e4
LT		 3456 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3457 if (signal_pending(current)) {
3458 break;
3459 }
3460 schedule();
3461 }
fd29cf72
SH		 3462 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(),
3463 idle_start));
1da177e4 3464 }
222f1806 3465
1da177e4
LT		 3466 /* Done with this */
3467 pktgen_stop_device(pkt_dev);
222f1806 3468 }
222f1806 3469}
1da177e4 3470
4ec93edb 3471/*
1da177e4
LT		 3472 * Main loop of the thread goes here
3473 */
3474
ee74baa7 3475static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3476{
3477 DEFINE_WAIT(wait);
ee74baa7 3478 struct pktgen_thread *t = arg;
222f1806 3479 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3480 int cpu = t->cpu;
1da177e4 3481
ee74baa7 3482 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3483
3484 init_waitqueue_head(&t->queue);
d3ede327 3485 complete(&t->start_done);
1da177e4 3486
ba25f9dc 3487 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3488
ee74baa7 3489 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3490
83144186
RW		 3491 set_freezable();
3492
ee74baa7
DM		 3493 while (!kthread_should_stop()) {
3494 pkt_dev = next_to_run(t);
1da177e4 3495
ee74baa7
DM		 3496 if (!pkt_dev &&
3497 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3498 == 0) {
3499 prepare_to_wait(&(t->queue), &wait,
3500 TASK_INTERRUPTIBLE);
3501 schedule_timeout(HZ / 10);
3502 finish_wait(&(t->queue), &wait);
3503 }
1da177e4 3504
ee74baa7 3505 __set_current_state(TASK_RUNNING);
222f1806 3506
b163911f 3507 if (pkt_dev)
1da177e4
LT		 3508 pktgen_xmit(pkt_dev);
3509
222f1806 3510 if (t->control & T_STOP) {
1da177e4
LT		 3511 pktgen_stop(t);
3512 t->control &= ~(T_STOP);
3513 }
3514
222f1806 3515 if (t->control & T_RUN) {
1da177e4
LT		 3516 pktgen_run(t);
3517 t->control &= ~(T_RUN);
3518 }
3519
222f1806 3520 if (t->control & T_REMDEVALL) {
1da177e4 3521 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3522 t->control &= ~(T_REMDEVALL);
3523 }
3524
222f1806 3525 if (t->control & T_REMDEV) {
95ed63f7 3526 pktgen_rem_one_if(t);
1da177e4
LT		 3527 t->control &= ~(T_REMDEV);
3528 }
3529
09fe3ef4
AM		 3530 try_to_freeze();
3531
ee74baa7 3532 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3533 }
1da177e4 3534
25c4e53a 3535 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3536 pktgen_stop(t);
1da177e4 3537
25c4e53a 3538 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3539 pktgen_rem_all_ifs(t);
1da177e4 3540
25c4e53a 3541 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3542 pktgen_rem_thread(t);
cdcdbe0b 3543
ee74baa7 3544 return 0;
1da177e4
LT		 3545}
3546
222f1806
LC		 3547static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3548 const char *ifname)
1da177e4 3549{
c26a8016 3550 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3551 if_lock(t);
3552
c26a8016 3553 list_for_each_entry(p, &t->if_list, list)
39df232f 3554 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3555 pkt_dev = p;
222f1806
LC		 3556 break;
3557 }
222f1806
LC		 3558
3559 if_unlock(t);
25c4e53a 3560 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3561 return pkt_dev;
1da177e4
LT		 3562}
3563
4ec93edb
YH		 3564/*
3565 * Adds a dev at front of if_list.
1da177e4
LT		 3566 */
3567
222f1806
LC		 3568static int add_dev_to_thread(struct pktgen_thread *t,
3569 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3570{
3571 int rv = 0;
222f1806
LC		 3572
3573 if_lock(t);
3574
3575 if (pkt_dev->pg_thread) {
25a8b254
DM		 3576 printk(KERN_ERR "pktgen: ERROR: already assigned "
3577 "to a thread.\n");
222f1806
LC		 3578 rv = -EBUSY;
3579 goto out;
3580 }
c26a8016
LC		 3581
3582 list_add(&pkt_dev->list, &t->if_list);
222f1806 3583 pkt_dev->pg_thread = t;
1da177e4
LT		 3584 pkt_dev->running = 0;
3585
222f1806
LC		 3586out:
3587 if_unlock(t);
3588 return rv;
1da177e4
LT		 3589}
3590
3591/* Called under thread lock */
3592
222f1806 3593static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3594{
222f1806 3595 struct pktgen_dev *pkt_dev;
39df232f 3596 int err;
222f1806 3597
1da177e4
LT		 3598 /* We don't allow a device to be on several threads */
3599
d50a6b56
SH		 3600 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3601 if (pkt_dev) {
25a8b254 3602 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3603 return -EBUSY;
3604 }
d50a6b56
SH		 3605
3606 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3607 if (!pkt_dev)
3608 return -ENOMEM;
3609
222f1806 3610 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3611 if (pkt_dev->flows == NULL) {
3612 kfree(pkt_dev);
3613 return -ENOMEM;
3614 }
222f1806 3615 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3616
95ed63f7 3617 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3618 pkt_dev->min_pkt_size = ETH_ZLEN;
3619 pkt_dev->max_pkt_size = ETH_ZLEN;
3620 pkt_dev->nfrags = 0;
3621 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3622 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3623 pkt_dev->count = pg_count_d;
3624 pkt_dev->sofar = 0;
222f1806 3625 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3626 pkt_dev->udp_src_max = 9;
3627 pkt_dev->udp_dst_min = 9;
3628 pkt_dev->udp_dst_max = 9;
3629
34954ddc
FF		 3630 pkt_dev->vlan_p = 0;
3631 pkt_dev->vlan_cfi = 0;
3632 pkt_dev->vlan_id = 0xffff;
3633 pkt_dev->svlan_p = 0;
3634 pkt_dev->svlan_cfi = 0;
3635 pkt_dev->svlan_id = 0xffff;
3636
39df232f
SH		 3637 err = pktgen_setup_dev(pkt_dev, ifname);
3638 if (err)
3639 goto out1;
d50a6b56 3640
5efdccbc
DL		 3641 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3642 &pktgen_if_fops, pkt_dev);
39df232f 3643 if (!pkt_dev->entry) {
25a8b254 3644 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3645 PG_PROC_DIR, ifname);
39df232f
SH		 3646 err = -EINVAL;
3647 goto out2;
d50a6b56 3648 }
a553e4a6
JHS		 3649#ifdef CONFIG_XFRM
3650 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3651 pkt_dev->ipsproto = IPPROTO_ESP;
3652#endif
d50a6b56
SH		 3653
3654 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3655out2:
3656 dev_put(pkt_dev->odev);
3657out1:
a553e4a6
JHS		 3658#ifdef CONFIG_XFRM
3659 free_SAs(pkt_dev);
3660#endif
1d0ebfe7 3661 vfree(pkt_dev->flows);
39df232f
SH		 3662 kfree(pkt_dev);
3663 return err;
1da177e4
LT		 3664}
3665
ee74baa7 3666static int __init pktgen_create_thread(int cpu)
1da177e4 3667{
cdcdbe0b 3668 struct pktgen_thread *t;
d50a6b56 3669 struct proc_dir_entry *pe;
ee74baa7 3670 struct task_struct *p;
222f1806
LC		 3671
3672 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3673 if (!t) {
25a8b254
DM		 3674 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3675 "create new thread.\n");
222f1806
LC		 3676 return -ENOMEM;
3677 }
3678
222f1806 3679 spin_lock_init(&t->if_lock);
1da177e4 3680 t->cpu = cpu;
222f1806 3681
ee74baa7
DM		 3682 INIT_LIST_HEAD(&t->if_list);
3683
3684 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3685 init_completion(&t->start_done);
ee74baa7
DM		 3686
3687 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3688 if (IS_ERR(p)) {
25a8b254
DM		 3689 printk(KERN_ERR "pktgen: kernel_thread() failed "
3690 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3691 list_del(&t->th_list);
3692 kfree(t);
3693 return PTR_ERR(p);
3694 }
3695 kthread_bind(p, cpu);
3696 t->tsk = p;
3697
5efdccbc
DL		 3698 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3699 &pktgen_thread_fops, t);
222f1806 3700 if (!pe) {
25a8b254 3701 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3702 PG_PROC_DIR, t->tsk->comm);
3703 kthread_stop(p);
3704 list_del(&t->th_list);
222f1806
LC		 3705 kfree(t);
3706 return -EINVAL;
3707 }
d50a6b56 3708
ee74baa7 3709 wake_up_process(p);
d3ede327 3710 wait_for_completion(&t->start_done);
1da177e4
LT		 3711
3712 return 0;
3713}
3714
4ec93edb
YH		 3715/*
3716 * Removes a device from the thread if_list.
1da177e4 3717 */
222f1806
LC		 3718static void _rem_dev_from_if_list(struct pktgen_thread *t,
3719 struct pktgen_dev *pkt_dev)
1da177e4 3720{
c26a8016
LC		 3721 struct list_head *q, *n;
3722 struct pktgen_dev *p;
1da177e4 3723
c26a8016
LC		 3724 list_for_each_safe(q, n, &t->if_list) {
3725 p = list_entry(q, struct pktgen_dev, list);
3726 if (p == pkt_dev)
3727 list_del(&p->list);
1da177e4
LT		 3728 }
3729}
3730
222f1806
LC		 3731static int pktgen_remove_device(struct pktgen_thread *t,
3732 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3733{
3734
25c4e53a 3735 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3736
222f1806 3737 if (pkt_dev->running) {
25a8b254
DM		 3738 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3739 "running interface, stopping it now.\n");
222f1806
LC		 3740 pktgen_stop_device(pkt_dev);
3741 }
3742
3743 /* Dis-associate from the interface */
1da177e4
LT		 3744
3745 if (pkt_dev->odev) {
3746 dev_put(pkt_dev->odev);
222f1806
LC		 3747 pkt_dev->odev = NULL;
3748 }
3749
1da177e4
LT		 3750 /* And update the thread if_list */
3751
3752 _rem_dev_from_if_list(t, pkt_dev);
3753
39df232f
SH		 3754 if (pkt_dev->entry)
3755 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3756
a553e4a6
JHS		 3757#ifdef CONFIG_XFRM
3758 free_SAs(pkt_dev);
3759#endif
1d0ebfe7 3760 vfree(pkt_dev->flows);
1da177e4 3761 kfree(pkt_dev);
222f1806 3762 return 0;
1da177e4
LT		 3763}
3764
222f1806 3765static int __init pg_init(void)
1da177e4
LT		 3766{
3767 int cpu;
d50a6b56 3768 struct proc_dir_entry *pe;
1da177e4 3769
25a8b254 3770 printk(KERN_INFO "%s", version);
1da177e4 3771
457c4cbc 3772 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3773 if (!pg_proc_dir)
3774 return -ENODEV;
1da177e4 3775
25296d59 3776 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3777 if (pe == NULL) {
25a8b254
DM		 3778 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3779 "procfs entry.\n", PGCTRL);
457c4cbc 3780 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3781 return -EINVAL;
3782 }
1da177e4 3783
1da177e4
LT		 3784 /* Register us to receive netdevice events */
3785 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3786
670c02c2 3787 for_each_online_cpu(cpu) {
8024bb24 3788 int err;
1da177e4 3789
ee74baa7 3790 err = pktgen_create_thread(cpu);
8024bb24 3791 if (err)
25a8b254
DM		 3792 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3793 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3794 }
8024bb24
LC		 3795
3796 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3797 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3798 "all threads\n");
8024bb24
LC		 3799 unregister_netdevice_notifier(&pktgen_notifier_block);
3800 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3801 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3802 return -ENODEV;
3803 }
3804
222f1806 3805 return 0;
1da177e4
LT		 3806}
3807
3808static void __exit pg_cleanup(void)
3809{
cdcdbe0b
LC		 3810 struct pktgen_thread *t;
3811 struct list_head *q, *n;
1da177e4
LT		 3812 wait_queue_head_t queue;
3813 init_waitqueue_head(&queue);
3814
222f1806 3815 /* Stop all interfaces & threads */
1da177e4 3816
cdcdbe0b
LC		 3817 list_for_each_safe(q, n, &pktgen_threads) {
3818 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3819 kthread_stop(t->tsk);
3820 kfree(t);
222f1806 3821 }
1da177e4 3822
222f1806 3823 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3824 unregister_netdevice_notifier(&pktgen_notifier_block);
3825
222f1806 3826 /* Clean up proc file system */
d50a6b56 3827 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3828 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3829}
3830
1da177e4
LT		 3831module_init(pg_init);
3832module_exit(pg_cleanup);
3833
3834MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3835MODULE_DESCRIPTION("Packet Generator tool");
3836MODULE_LICENSE("GPL");
3837module_param(pg_count_d, int, 0);
3838module_param(pg_delay_d, int, 0);
3839module_param(pg_clone_skb_d, int, 0);
3840module_param(debug, int, 0);
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