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pktgen: use common idle routine
[deliverable/linux.git] / net / core / pktgen.c
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>
2bc481cf 134#include <linux/hrtimer.h>
09fe3ef4 135#include <linux/freezer.h>
1da177e4
LT		 136#include <linux/delay.h>
137#include <linux/timer.h>
cdcdbe0b 138#include <linux/list.h>
1da177e4
LT		 139#include <linux/init.h>
140#include <linux/skbuff.h>
141#include <linux/netdevice.h>
142#include <linux/inet.h>
143#include <linux/inetdevice.h>
144#include <linux/rtnetlink.h>
145#include <linux/if_arp.h>
34954ddc 146#include <linux/if_vlan.h>
1da177e4
LT		 147#include <linux/in.h>
148#include <linux/ip.h>
149#include <linux/ipv6.h>
150#include <linux/udp.h>
151#include <linux/proc_fs.h>
d50a6b56 152#include <linux/seq_file.h>
1da177e4 153#include <linux/wait.h>
f404e9a6 154#include <linux/etherdevice.h>
ee74baa7 155#include <linux/kthread.h>
457c4cbc 156#include <net/net_namespace.h>
1da177e4
LT		 157#include <net/checksum.h>
158#include <net/ipv6.h>
159#include <net/addrconf.h>
a553e4a6
JHS		 160#ifdef CONFIG_XFRM
161#include <net/xfrm.h>
162#endif
1da177e4
LT		 163#include <asm/byteorder.h>
164#include <linux/rcupdate.h>
1977f032 165#include <linux/bitops.h>
1da177e4
LT		 166#include <asm/io.h>
167#include <asm/dma.h>
168#include <asm/uaccess.h>
222f1806 169#include <asm/div64.h> /* do_div */
1da177e4
LT		 170#include <asm/timex.h>
171
e6fce5b9 172#define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
1da177e4 173
1da177e4 174#define IP_NAME_SZ 32
ca6549af 175#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 176#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 177
178/* Device flag bits */
222f1806
LC		 179#define F_IPSRC_RND (1<<0) /* IP-Src Random */
180#define F_IPDST_RND (1<<1) /* IP-Dst Random */
181#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
182#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
183#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
184#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
185#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
186#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 187#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 188#define F_VID_RND (1<<9) /* Random VLAN ID */
189#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 190#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 191#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 192#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 193#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
1da177e4
LT		 194
195/* Thread control flag bits */
222f1806
LC		 196#define T_TERMINATE (1<<0)
197#define T_STOP (1<<1) /* Stop run */
198#define T_RUN (1<<2) /* Start run */
199#define T_REMDEVALL (1<<3) /* Remove all devs */
200#define T_REMDEV (1<<4) /* Remove one dev */
1da177e4 201
1da177e4
LT		 202/* If lock -- can be removed after some work */
203#define if_lock(t) spin_lock(&(t->if_lock));
204#define if_unlock(t) spin_unlock(&(t->if_lock));
205
206/* Used to help with determining the pkts on receive */
207#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 208#define PG_PROC_DIR "pktgen"
209#define PGCTRL "pgctrl"
210static struct proc_dir_entry *pg_proc_dir = NULL;
1da177e4
LT		 211
212#define MAX_CFLOWS 65536
213
34954ddc
FF		 214#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
215#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
216
222f1806 217struct flow_state {
252e3346 218 __be32 cur_daddr;
222f1806 219 int count;
a553e4a6
JHS		 220#ifdef CONFIG_XFRM
221 struct xfrm_state *x;
222#endif
007a531b 223 __u32 flags;
1da177e4
LT		 224};
225
007a531b
JHS		 226/* flow flag bits */
227#define F_INIT (1<<0) /* flow has been initialized */
228
1da177e4 229struct pktgen_dev {
1da177e4
LT		 230 /*
231 * Try to keep frequent/infrequent used vars. separated.
232 */
39df232f
SH		 233 struct proc_dir_entry *entry; /* proc file */
234 struct pktgen_thread *pg_thread;/* the owner */
c26a8016 235 struct list_head list; /* Used for chaining in the thread's run-queue */
1da177e4 236
222f1806 237 int running; /* if this changes to false, the test will stop */
1da177e4 238
222f1806
LC		 239 /* If min != max, then we will either do a linear iteration, or
240 * we will do a random selection from within the range.
241 */
242 __u32 flags;
95ed63f7
AK		 243 int removal_mark; /* non-zero => the device is marked for
244 * removal by worker thread */
1da177e4 245
222f1806
LC		 246 int min_pkt_size; /* = ETH_ZLEN; */
247 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 248 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 249 int nfrags;
fd29cf72
SH		 250 u64 delay; /* nano-seconds */
251
222f1806
LC		 252 __u64 count; /* Default No packets to send */
253 __u64 sofar; /* How many pkts we've sent so far */
254 __u64 tx_bytes; /* How many bytes we've transmitted */
255 __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
256
257 /* runtime counters relating to clone_skb */
222f1806
LC		 258
259 __u64 allocated_skbs;
260 __u32 clone_count;
261 int last_ok; /* Was last skb sent?
262 * Or a failed transmit of some sort? This will keep
263 * sequence numbers in order, for example.
264 */
fd29cf72
SH		 265 ktime_t next_tx;
266 ktime_t started_at;
267 ktime_t stopped_at;
268 u64 idle_acc; /* nano-seconds */
269
222f1806
LC		 270 __u32 seq_num;
271
272 int clone_skb; /* Use multiple SKBs during packet gen. If this number
273 * is greater than 1, then that many copies of the same
274 * packet will be sent before a new packet is allocated.
275 * For instance, if you want to send 1024 identical packets
276 * before creating a new packet, set clone_skb to 1024.
277 */
278
279 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
280 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
281 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
283
284 struct in6_addr in6_saddr;
285 struct in6_addr in6_daddr;
286 struct in6_addr cur_in6_daddr;
287 struct in6_addr cur_in6_saddr;
1da177e4 288 /* For ranges */
222f1806
LC		 289 struct in6_addr min_in6_daddr;
290 struct in6_addr max_in6_daddr;
291 struct in6_addr min_in6_saddr;
292 struct in6_addr max_in6_saddr;
293
294 /* If we're doing ranges, random or incremental, then this
295 * defines the min/max for those ranges.
296 */
252e3346
AV		 297 __be32 saddr_min; /* inclusive, source IP address */
298 __be32 saddr_max; /* exclusive, source IP address */
299 __be32 daddr_min; /* inclusive, dest IP address */
300 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 301
302 __u16 udp_src_min; /* inclusive, source UDP port */
303 __u16 udp_src_max; /* exclusive, source UDP port */
304 __u16 udp_dst_min; /* inclusive, dest UDP port */
305 __u16 udp_dst_max; /* exclusive, dest UDP port */
306
1ca7768c
FF		 307 /* DSCP + ECN */
308 __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
309 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
310
ca6549af
SW		 311 /* MPLS */
312 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
313 __be32 labels[MAX_MPLS_LABELS];
314
34954ddc
FF		 315 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
316 __u8 vlan_p;
317 __u8 vlan_cfi;
318 __u16 vlan_id; /* 0xffff means no vlan tag */
319
320 __u8 svlan_p;
321 __u8 svlan_cfi;
322 __u16 svlan_id; /* 0xffff means no svlan tag */
323
222f1806
LC		 324 __u32 src_mac_count; /* How many MACs to iterate through */
325 __u32 dst_mac_count; /* How many MACs to iterate through */
326
327 unsigned char dst_mac[ETH_ALEN];
328 unsigned char src_mac[ETH_ALEN];
329
330 __u32 cur_dst_mac_offset;
331 __u32 cur_src_mac_offset;
252e3346
AV		 332 __be32 cur_saddr;
333 __be32 cur_daddr;
222f1806
LC		 334 __u16 cur_udp_dst;
335 __u16 cur_udp_src;
45b270f8 336 __u16 cur_queue_map;
222f1806
LC		 337 __u32 cur_pkt_size;
338
339 __u8 hh[14];
340 /* = {
341 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
342
343 We fill in SRC address later
344 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
345 0x08, 0x00
346 };
347 */
348 __u16 pad; /* pad out the hh struct to an even 16 bytes */
349
350 struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
351 * are transmitting the same one multiple times
352 */
353 struct net_device *odev; /* The out-going device. Note that the device should
354 * have it's pg_info pointer pointing back to this
355 * device. This will be set when the user specifies
356 * the out-going device name (not when the inject is
357 * started as it used to do.)
358 */
1da177e4 359 struct flow_state *flows;
222f1806
LC		 360 unsigned cflows; /* Concurrent flows (config) */
361 unsigned lflow; /* Flow length (config) */
362 unsigned nflows; /* accumulated flows (stats) */
007a531b 363 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 364
365 u16 queue_map_min;
366 u16 queue_map_max;
367
a553e4a6
JHS		 368#ifdef CONFIG_XFRM
369 __u8 ipsmode; /* IPSEC mode (config) */
370 __u8 ipsproto; /* IPSEC type (config) */
371#endif
39df232f 372 char result[512];
1da177e4
LT		 373};
374
375struct pktgen_hdr {
252e3346
AV		 376 __be32 pgh_magic;
377 __be32 seq_num;
378 __be32 tv_sec;
379 __be32 tv_usec;
1da177e4
LT		 380};
381
382struct pktgen_thread {
222f1806 383 spinlock_t if_lock;
c26a8016 384 struct list_head if_list; /* All device here */
cdcdbe0b 385 struct list_head th_list;
ee74baa7 386 struct task_struct *tsk;
222f1806 387 char result[512];
222f1806
LC		 388
389 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
390
391 u32 control;
1da177e4
LT		 392 int cpu;
393
222f1806 394 wait_queue_head_t queue;
d3ede327 395 struct completion start_done;
1da177e4
LT		 396};
397
398#define REMOVE 1
399#define FIND 0
400
fd29cf72 401static inline ktime_t ktime_now(void)
1da177e4 402{
fd29cf72
SH		 403 struct timespec ts;
404 ktime_get_ts(&ts);
405
406 return timespec_to_ktime(ts);
1da177e4
LT		 407}
408
fd29cf72
SH		 409/* This works even if 32 bit because of careful byte order choice */
410static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 411{
fd29cf72 412 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 413}
414
65c5b786 415static const char version[] __initconst = VERSION;
1da177e4 416
222f1806
LC		 417static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
418static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
419static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
420 const char *ifname);
1da177e4
LT		 421static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
422static void pktgen_run_all_threads(void);
eb37b41c 423static void pktgen_reset_all_threads(void);
1da177e4 424static void pktgen_stop_all_threads_ifs(void);
3bda06a3 425
222f1806 426static void pktgen_stop(struct pktgen_thread *t);
1da177e4 427static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 428
222f1806
LC		 429static unsigned int scan_ip6(const char *s, char ip[16]);
430static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 431
432/* Module parameters, defaults. */
65c5b786
SH		 433static int pg_count_d __read_mostly = 1000;
434static int pg_delay_d __read_mostly;
435static int pg_clone_skb_d __read_mostly;
436static int debug __read_mostly;
1da177e4 437
222fa076 438static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 439static LIST_HEAD(pktgen_threads);
1da177e4 440
1da177e4
LT		 441static struct notifier_block pktgen_notifier_block = {
442 .notifier_call = pktgen_device_event,
443};
444
1da177e4 445/*
4ec93edb 446 * /proc handling functions
1da177e4
LT		 447 *
448 */
449
d50a6b56 450static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 451{
d50a6b56
SH		 452 seq_puts(seq, VERSION);
453 return 0;
1da177e4
LT		 454}
455
222f1806
LC		 456static ssize_t pgctrl_write(struct file *file, const char __user * buf,
457 size_t count, loff_t * ppos)
1da177e4 458{
1da177e4 459 int err = 0;
d50a6b56 460 char data[128];
1da177e4 461
222f1806
LC		 462 if (!capable(CAP_NET_ADMIN)) {
463 err = -EPERM;
1da177e4 464 goto out;
222f1806 465 }
1da177e4 466
d50a6b56
SH		 467 if (count > sizeof(data))
468 count = sizeof(data);
1da177e4 469
1da177e4 470 if (copy_from_user(data, buf, count)) {
b4099fab 471 err = -EFAULT;
d50a6b56 472 goto out;
222f1806
LC		 473 }
474 data[count - 1] = 0; /* Make string */
1da177e4 475
222f1806 476 if (!strcmp(data, "stop"))
1da177e4
LT		 477 pktgen_stop_all_threads_ifs();
478
222f1806 479 else if (!strcmp(data, "start"))
1da177e4
LT		 480 pktgen_run_all_threads();
481
eb37b41c
JB		 482 else if (!strcmp(data, "reset"))
483 pktgen_reset_all_threads();
484
222f1806 485 else
25a8b254 486 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 487
488 err = count;
489
222f1806
LC		 490out:
491 return err;
1da177e4
LT		 492}
493
d50a6b56
SH		 494static int pgctrl_open(struct inode *inode, struct file *file)
495{
496 return single_open(file, pgctrl_show, PDE(inode)->data);
497}
498
9a32144e 499static const struct file_operations pktgen_fops = {
222f1806
LC		 500 .owner = THIS_MODULE,
501 .open = pgctrl_open,
502 .read = seq_read,
503 .llseek = seq_lseek,
504 .write = pgctrl_write,
505 .release = single_release,
d50a6b56
SH		 506};
507
508static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 509{
648fda74 510 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 511 ktime_t stopped;
512 u64 idle;
222f1806
LC		 513
514 seq_printf(seq,
515 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
516 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
517 pkt_dev->max_pkt_size);
518
519 seq_printf(seq,
fd29cf72
SH		 520 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
521 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
39df232f 522 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 523
524 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
525 pkt_dev->lflow);
526
45b270f8
RO		 527 seq_printf(seq,
528 " queue_map_min: %u queue_map_max: %u\n",
529 pkt_dev->queue_map_min,
530 pkt_dev->queue_map_max);
531
222f1806
LC		 532 if (pkt_dev->flags & F_IPV6) {
533 char b1[128], b2[128], b3[128];
534 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
535 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
536 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
537 seq_printf(seq,
538 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
539 b2, b3);
540
541 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
542 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
543 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
544 seq_printf(seq,
545 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
546 b2, b3);
547
548 } else
549 seq_printf(seq,
550 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
551 pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
552 pkt_dev->src_max);
1da177e4 553
222f1806 554 seq_puts(seq, " src_mac: ");
1da177e4 555
e174961c
JB		 556 seq_printf(seq, "%pM ",
557 is_zero_ether_addr(pkt_dev->src_mac) ?
558 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 559
560 seq_printf(seq, "dst_mac: ");
e174961c 561 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 562
563 seq_printf(seq,
564 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
565 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
566 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
567
568 seq_printf(seq,
ca6549af 569 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 570 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 571
ca6549af
SW		 572 if (pkt_dev->nr_labels) {
573 unsigned i;
574 seq_printf(seq, " mpls: ");
e71a4783 575 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 576 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
577 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
578 }
579
34954ddc
FF		 580 if (pkt_dev->vlan_id != 0xffff) {
581 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
582 pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
583 }
584
585 if (pkt_dev->svlan_id != 0xffff) {
586 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
587 pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
588 }
589
1ca7768c
FF		 590 if (pkt_dev->tos) {
591 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
592 }
593
594 if (pkt_dev->traffic_class) {
595 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
596 }
597
ca6549af
SW		 598 seq_printf(seq, " Flags: ");
599
222f1806
LC		 600 if (pkt_dev->flags & F_IPV6)
601 seq_printf(seq, "IPV6 ");
1da177e4 602
222f1806
LC		 603 if (pkt_dev->flags & F_IPSRC_RND)
604 seq_printf(seq, "IPSRC_RND ");
1da177e4 605
222f1806
LC		 606 if (pkt_dev->flags & F_IPDST_RND)
607 seq_printf(seq, "IPDST_RND ");
1da177e4 608
222f1806
LC		 609 if (pkt_dev->flags & F_TXSIZE_RND)
610 seq_printf(seq, "TXSIZE_RND ");
1da177e4 611
222f1806
LC		 612 if (pkt_dev->flags & F_UDPSRC_RND)
613 seq_printf(seq, "UDPSRC_RND ");
1da177e4 614
222f1806
LC		 615 if (pkt_dev->flags & F_UDPDST_RND)
616 seq_printf(seq, "UDPDST_RND ");
1da177e4 617
ca6549af
SW		 618 if (pkt_dev->flags & F_MPLS_RND)
619 seq_printf(seq, "MPLS_RND ");
620
45b270f8
RO		 621 if (pkt_dev->flags & F_QUEUE_MAP_RND)
622 seq_printf(seq, "QUEUE_MAP_RND ");
623
e6fce5b9
RO		 624 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
625 seq_printf(seq, "QUEUE_MAP_CPU ");
626
007a531b
JHS		 627 if (pkt_dev->cflows) {
628 if (pkt_dev->flags & F_FLOW_SEQ)
629 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
630 else
631 seq_printf(seq, "FLOW_RND ");
632 }
633
a553e4a6
JHS		 634#ifdef CONFIG_XFRM
635 if (pkt_dev->flags & F_IPSEC_ON)
636 seq_printf(seq, "IPSEC ");
637#endif
638
222f1806
LC		 639 if (pkt_dev->flags & F_MACSRC_RND)
640 seq_printf(seq, "MACSRC_RND ");
1da177e4 641
222f1806
LC		 642 if (pkt_dev->flags & F_MACDST_RND)
643 seq_printf(seq, "MACDST_RND ");
1da177e4 644
34954ddc
FF		 645 if (pkt_dev->flags & F_VID_RND)
646 seq_printf(seq, "VID_RND ");
647
648 if (pkt_dev->flags & F_SVID_RND)
649 seq_printf(seq, "SVID_RND ");
650
222f1806
LC		 651 seq_puts(seq, "\n");
652
fd29cf72
SH		 653 /* not really stopped, more like last-running-at */
654 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
655 idle = pkt_dev->idle_acc;
656 do_div(idle, NSEC_PER_USEC);
1da177e4 657
222f1806 658 seq_printf(seq,
fd29cf72 659 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 660 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 661 (unsigned long long)pkt_dev->errors);
662
663 seq_printf(seq,
664 " started: %lluus stopped: %lluus idle: %lluus\n",
665 (unsigned long long) ktime_to_us(pkt_dev->started_at),
666 (unsigned long long) ktime_to_us(stopped),
667 (unsigned long long) idle);
1da177e4 668
222f1806
LC		 669 seq_printf(seq,
670 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 671 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
672 pkt_dev->cur_src_mac_offset);
1da177e4 673
222f1806 674 if (pkt_dev->flags & F_IPV6) {
1da177e4 675 char b1[128], b2[128];
222f1806
LC		 676 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
677 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
678 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
679 } else
680 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 681 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 682
222f1806 683 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 684 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 685
45b270f8
RO		 686 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
687
222f1806 688 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 689
690 if (pkt_dev->result[0])
222f1806 691 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 692 else
222f1806 693 seq_printf(seq, "Result: Idle\n");
1da177e4 694
d50a6b56 695 return 0;
1da177e4
LT		 696}
697
ca6549af 698
1ca7768c 699static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
ca6549af
SW		 700{
701 int i = 0;
702 *num = 0;
703
e71a4783 704 for (; i < maxlen; i++) {
ca6549af
SW		 705 char c;
706 *num <<= 4;
707 if (get_user(c, &user_buffer[i]))
708 return -EFAULT;
709 if ((c >= '0') && (c <= '9'))
710 *num |= c - '0';
711 else if ((c >= 'a') && (c <= 'f'))
712 *num |= c - 'a' + 10;
713 else if ((c >= 'A') && (c <= 'F'))
714 *num |= c - 'A' + 10;
715 else
716 break;
717 }
718 return i;
719}
720
222f1806
LC		 721static int count_trail_chars(const char __user * user_buffer,
722 unsigned int maxlen)
1da177e4
LT		 723{
724 int i;
725
726 for (i = 0; i < maxlen; i++) {
222f1806
LC		 727 char c;
728 if (get_user(c, &user_buffer[i]))
729 return -EFAULT;
730 switch (c) {
1da177e4
LT		 731 case '\"':
732 case '\n':
733 case '\r':
734 case '\t':
735 case ' ':
736 case '=':
737 break;
738 default:
739 goto done;
3ff50b79 740 }
1da177e4
LT		 741 }
742done:
743 return i;
744}
745
222f1806
LC		 746static unsigned long num_arg(const char __user * user_buffer,
747 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 748{
749 int i = 0;
750 *num = 0;
222f1806
LC		 751
752 for (; i < maxlen; i++) {
753 char c;
754 if (get_user(c, &user_buffer[i]))
755 return -EFAULT;
756 if ((c >= '0') && (c <= '9')) {
1da177e4 757 *num *= 10;
222f1806 758 *num += c - '0';
1da177e4
LT		 759 } else
760 break;
761 }
762 return i;
763}
764
222f1806 765static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 766{
767 int i = 0;
768
222f1806
LC		 769 for (; i < maxlen; i++) {
770 char c;
771 if (get_user(c, &user_buffer[i]))
772 return -EFAULT;
773 switch (c) {
1da177e4
LT		 774 case '\"':
775 case '\n':
776 case '\r':
777 case '\t':
778 case ' ':
779 goto done_str;
780 break;
781 default:
782 break;
3ff50b79 783 }
1da177e4
LT		 784 }
785done_str:
1da177e4
LT		 786 return i;
787}
788
ca6549af
SW		 789static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
790{
791 unsigned n = 0;
792 char c;
793 ssize_t i = 0;
794 int len;
795
796 pkt_dev->nr_labels = 0;
797 do {
798 __u32 tmp;
1ca7768c 799 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 800 if (len <= 0)
801 return len;
802 pkt_dev->labels[n] = htonl(tmp);
803 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
804 pkt_dev->flags |= F_MPLS_RND;
805 i += len;
806 if (get_user(c, &buffer[i]))
807 return -EFAULT;
808 i++;
809 n++;
810 if (n >= MAX_MPLS_LABELS)
811 return -E2BIG;
e71a4783 812 } while (c == ',');
ca6549af
SW		 813
814 pkt_dev->nr_labels = n;
815 return i;
816}
817
222f1806
LC		 818static ssize_t pktgen_if_write(struct file *file,
819 const char __user * user_buffer, size_t count,
820 loff_t * offset)
1da177e4 821{
222f1806
LC		 822 struct seq_file *seq = (struct seq_file *)file->private_data;
823 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 824 int i = 0, max, len;
825 char name[16], valstr[32];
826 unsigned long value = 0;
222f1806
LC		 827 char *pg_result = NULL;
828 int tmp = 0;
1da177e4 829 char buf[128];
222f1806
LC		 830
831 pg_result = &(pkt_dev->result[0]);
832
1da177e4 833 if (count < 1) {
25a8b254 834 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 835 return -EINVAL;
836 }
222f1806 837
1da177e4
LT		 838 max = count - i;
839 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 840 if (tmp < 0) {
25a8b254 841 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 842 return tmp;
1da177e4 843 }
222f1806
LC		 844 i += tmp;
845
1da177e4
LT		 846 /* Read variable name */
847
848 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806
LC		 849 if (len < 0) {
850 return len;
851 }
1da177e4 852 memset(name, 0, sizeof(name));
222f1806 853 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 854 return -EFAULT;
855 i += len;
222f1806
LC		 856
857 max = count - i;
1da177e4 858 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 859 if (len < 0)
860 return len;
861
1da177e4
LT		 862 i += len;
863
864 if (debug) {
222f1806
LC		 865 char tb[count + 1];
866 if (copy_from_user(tb, user_buffer, count))
1da177e4 867 return -EFAULT;
222f1806 868 tb[count] = 0;
25a8b254 869 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 870 (unsigned long)count, tb);
871 }
1da177e4
LT		 872
873 if (!strcmp(name, "min_pkt_size")) {
874 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 875 if (len < 0) {
876 return len;
877 }
1da177e4 878 i += len;
222f1806
LC		 879 if (value < 14 + 20 + 8)
880 value = 14 + 20 + 8;
881 if (value != pkt_dev->min_pkt_size) {
882 pkt_dev->min_pkt_size = value;
883 pkt_dev->cur_pkt_size = value;
884 }
885 sprintf(pg_result, "OK: min_pkt_size=%u",
886 pkt_dev->min_pkt_size);
1da177e4
LT		 887 return count;
888 }
889
222f1806 890 if (!strcmp(name, "max_pkt_size")) {
1da177e4 891 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 892 if (len < 0) {
893 return len;
894 }
1da177e4 895 i += len;
222f1806
LC		 896 if (value < 14 + 20 + 8)
897 value = 14 + 20 + 8;
898 if (value != pkt_dev->max_pkt_size) {
899 pkt_dev->max_pkt_size = value;
900 pkt_dev->cur_pkt_size = value;
901 }
902 sprintf(pg_result, "OK: max_pkt_size=%u",
903 pkt_dev->max_pkt_size);
1da177e4
LT		 904 return count;
905 }
906
222f1806 907 /* Shortcut for min = max */
1da177e4
LT		 908
909 if (!strcmp(name, "pkt_size")) {
910 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 911 if (len < 0) {
912 return len;
913 }
1da177e4 914 i += len;
222f1806
LC		 915 if (value < 14 + 20 + 8)
916 value = 14 + 20 + 8;
917 if (value != pkt_dev->min_pkt_size) {
918 pkt_dev->min_pkt_size = value;
919 pkt_dev->max_pkt_size = value;
920 pkt_dev->cur_pkt_size = value;
921 }
1da177e4
LT		 922 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
923 return count;
924 }
925
222f1806 926 if (!strcmp(name, "debug")) {
1da177e4 927 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 928 if (len < 0) {
929 return len;
930 }
1da177e4 931 i += len;
222f1806 932 debug = value;
1da177e4
LT		 933 sprintf(pg_result, "OK: debug=%u", debug);
934 return count;
935 }
936
222f1806 937 if (!strcmp(name, "frags")) {
1da177e4 938 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 939 if (len < 0) {
940 return len;
941 }
1da177e4
LT		 942 i += len;
943 pkt_dev->nfrags = value;
944 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
945 return count;
946 }
947 if (!strcmp(name, "delay")) {
948 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 949 if (len < 0) {
950 return len;
951 }
1da177e4 952 i += len;
fd29cf72
SH		 953 if (value == 0x7FFFFFFF)
954 pkt_dev->delay = ULLONG_MAX;
955 else
956 pkt_dev->delay = (u64)value * NSEC_PER_USEC;
957
958 sprintf(pg_result, "OK: delay=%llu",
959 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 960 return count;
961 }
222f1806 962 if (!strcmp(name, "udp_src_min")) {
1da177e4 963 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 964 if (len < 0) {
965 return len;
966 }
1da177e4 967 i += len;
222f1806
LC		 968 if (value != pkt_dev->udp_src_min) {
969 pkt_dev->udp_src_min = value;
970 pkt_dev->cur_udp_src = value;
971 }
1da177e4
LT		 972 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
973 return count;
974 }
222f1806 975 if (!strcmp(name, "udp_dst_min")) {
1da177e4 976 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 977 if (len < 0) {
978 return len;
979 }
1da177e4 980 i += len;
222f1806
LC		 981 if (value != pkt_dev->udp_dst_min) {
982 pkt_dev->udp_dst_min = value;
983 pkt_dev->cur_udp_dst = value;
984 }
1da177e4
LT		 985 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
986 return count;
987 }
222f1806 988 if (!strcmp(name, "udp_src_max")) {
1da177e4 989 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 990 if (len < 0) {
991 return len;
992 }
1da177e4 993 i += len;
222f1806
LC		 994 if (value != pkt_dev->udp_src_max) {
995 pkt_dev->udp_src_max = value;
996 pkt_dev->cur_udp_src = value;
997 }
1da177e4
LT		 998 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
999 return count;
1000 }
222f1806 1001 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1002 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1003 if (len < 0) {
1004 return len;
1005 }
1da177e4 1006 i += len;
222f1806
LC		 1007 if (value != pkt_dev->udp_dst_max) {
1008 pkt_dev->udp_dst_max = value;
1009 pkt_dev->cur_udp_dst = value;
1010 }
1da177e4
LT		 1011 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1012 return count;
1013 }
1014 if (!strcmp(name, "clone_skb")) {
1015 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1016 if (len < 0) {
1017 return len;
1018 }
1da177e4 1019 i += len;
222f1806
LC		 1020 pkt_dev->clone_skb = value;
1021
1da177e4
LT		 1022 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1023 return count;
1024 }
1025 if (!strcmp(name, "count")) {
1026 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1027 if (len < 0) {
1028 return len;
1029 }
1da177e4
LT		 1030 i += len;
1031 pkt_dev->count = value;
1032 sprintf(pg_result, "OK: count=%llu",
222f1806 1033 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1034 return count;
1035 }
1036 if (!strcmp(name, "src_mac_count")) {
1037 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1038 if (len < 0) {
1039 return len;
1040 }
1da177e4
LT		 1041 i += len;
1042 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1043 pkt_dev->src_mac_count = value;
1044 pkt_dev->cur_src_mac_offset = 0;
1045 }
1046 sprintf(pg_result, "OK: src_mac_count=%d",
1047 pkt_dev->src_mac_count);
1da177e4
LT		 1048 return count;
1049 }
1050 if (!strcmp(name, "dst_mac_count")) {
1051 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1052 if (len < 0) {
1053 return len;
1054 }
1da177e4
LT		 1055 i += len;
1056 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1057 pkt_dev->dst_mac_count = value;
1058 pkt_dev->cur_dst_mac_offset = 0;
1059 }
1060 sprintf(pg_result, "OK: dst_mac_count=%d",
1061 pkt_dev->dst_mac_count);
1da177e4
LT		 1062 return count;
1063 }
1064 if (!strcmp(name, "flag")) {
222f1806
LC		 1065 char f[32];
1066 memset(f, 0, 32);
1da177e4 1067 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1068 if (len < 0) {
1069 return len;
1070 }
1da177e4
LT		 1071 if (copy_from_user(f, &user_buffer[i], len))
1072 return -EFAULT;
1073 i += len;
222f1806
LC		 1074 if (strcmp(f, "IPSRC_RND") == 0)
1075 pkt_dev->flags |= F_IPSRC_RND;
1076
1077 else if (strcmp(f, "!IPSRC_RND") == 0)
1078 pkt_dev->flags &= ~F_IPSRC_RND;
1079
1080 else if (strcmp(f, "TXSIZE_RND") == 0)
1081 pkt_dev->flags |= F_TXSIZE_RND;
1082
1083 else if (strcmp(f, "!TXSIZE_RND") == 0)
1084 pkt_dev->flags &= ~F_TXSIZE_RND;
1085
1086 else if (strcmp(f, "IPDST_RND") == 0)
1087 pkt_dev->flags |= F_IPDST_RND;
1088
1089 else if (strcmp(f, "!IPDST_RND") == 0)
1090 pkt_dev->flags &= ~F_IPDST_RND;
1091
1092 else if (strcmp(f, "UDPSRC_RND") == 0)
1093 pkt_dev->flags |= F_UDPSRC_RND;
1094
1095 else if (strcmp(f, "!UDPSRC_RND") == 0)
1096 pkt_dev->flags &= ~F_UDPSRC_RND;
1097
1098 else if (strcmp(f, "UDPDST_RND") == 0)
1099 pkt_dev->flags |= F_UDPDST_RND;
1100
1101 else if (strcmp(f, "!UDPDST_RND") == 0)
1102 pkt_dev->flags &= ~F_UDPDST_RND;
1103
1104 else if (strcmp(f, "MACSRC_RND") == 0)
1105 pkt_dev->flags |= F_MACSRC_RND;
1106
1107 else if (strcmp(f, "!MACSRC_RND") == 0)
1108 pkt_dev->flags &= ~F_MACSRC_RND;
1109
1110 else if (strcmp(f, "MACDST_RND") == 0)
1111 pkt_dev->flags |= F_MACDST_RND;
1112
1113 else if (strcmp(f, "!MACDST_RND") == 0)
1114 pkt_dev->flags &= ~F_MACDST_RND;
1115
ca6549af
SW		 1116 else if (strcmp(f, "MPLS_RND") == 0)
1117 pkt_dev->flags |= F_MPLS_RND;
1118
1119 else if (strcmp(f, "!MPLS_RND") == 0)
1120 pkt_dev->flags &= ~F_MPLS_RND;
1121
34954ddc
FF		 1122 else if (strcmp(f, "VID_RND") == 0)
1123 pkt_dev->flags |= F_VID_RND;
1124
1125 else if (strcmp(f, "!VID_RND") == 0)
1126 pkt_dev->flags &= ~F_VID_RND;
1127
1128 else if (strcmp(f, "SVID_RND") == 0)
1129 pkt_dev->flags |= F_SVID_RND;
1130
1131 else if (strcmp(f, "!SVID_RND") == 0)
1132 pkt_dev->flags &= ~F_SVID_RND;
1133
007a531b
JHS		 1134 else if (strcmp(f, "FLOW_SEQ") == 0)
1135 pkt_dev->flags |= F_FLOW_SEQ;
1136
45b270f8
RO		 1137 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1138 pkt_dev->flags |= F_QUEUE_MAP_RND;
1139
1140 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1141 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1142
1143 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1144 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1145
1146 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1147 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1148#ifdef CONFIG_XFRM
1149 else if (strcmp(f, "IPSEC") == 0)
1150 pkt_dev->flags |= F_IPSEC_ON;
1151#endif
1152
1ca7768c
FF		 1153 else if (strcmp(f, "!IPV6") == 0)
1154 pkt_dev->flags &= ~F_IPV6;
1155
222f1806
LC		 1156 else {
1157 sprintf(pg_result,
1158 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1159 f,
1ca7768c 1160 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1161 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1162 return count;
1163 }
1da177e4
LT		 1164 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1165 return count;
1166 }
1167 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1168 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
222f1806
LC		 1169 if (len < 0) {
1170 return len;
1171 }
1da177e4 1172
222f1806 1173 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1174 return -EFAULT;
222f1806
LC		 1175 buf[len] = 0;
1176 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1177 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1178 strncpy(pkt_dev->dst_min, buf, len);
1179 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1180 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1181 }
1182 if (debug)
25a8b254 1183 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1184 pkt_dev->dst_min);
1185 i += len;
1da177e4
LT		 1186 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1187 return count;
1188 }
1189 if (!strcmp(name, "dst_max")) {
1190 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
222f1806
LC		 1191 if (len < 0) {
1192 return len;
1193 }
1da177e4 1194
222f1806 1195 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1196 return -EFAULT;
1197
222f1806
LC		 1198 buf[len] = 0;
1199 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1200 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1201 strncpy(pkt_dev->dst_max, buf, len);
1202 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1203 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1204 }
1205 if (debug)
25a8b254 1206 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1207 pkt_dev->dst_max);
1da177e4
LT		 1208 i += len;
1209 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1210 return count;
1211 }
1212 if (!strcmp(name, "dst6")) {
1213 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1214 if (len < 0)
1215 return len;
1da177e4
LT		 1216
1217 pkt_dev->flags |= F_IPV6;
1218
222f1806 1219 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1220 return -EFAULT;
222f1806 1221 buf[len] = 0;
1da177e4
LT		 1222
1223 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1224 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1225
1226 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1227
222f1806 1228 if (debug)
25a8b254 1229 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1230
222f1806 1231 i += len;
1da177e4
LT		 1232 sprintf(pg_result, "OK: dst6=%s", buf);
1233 return count;
1234 }
1235 if (!strcmp(name, "dst6_min")) {
1236 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1237 if (len < 0)
1238 return len;
1da177e4
LT		 1239
1240 pkt_dev->flags |= F_IPV6;
1241
222f1806 1242 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1243 return -EFAULT;
222f1806 1244 buf[len] = 0;
1da177e4
LT		 1245
1246 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1247 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1248
222f1806
LC		 1249 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1250 &pkt_dev->min_in6_daddr);
1251 if (debug)
25a8b254 1252 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1253
222f1806 1254 i += len;
1da177e4
LT		 1255 sprintf(pg_result, "OK: dst6_min=%s", buf);
1256 return count;
1257 }
1258 if (!strcmp(name, "dst6_max")) {
1259 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1260 if (len < 0)
1261 return len;
1da177e4
LT		 1262
1263 pkt_dev->flags |= F_IPV6;
1264
222f1806 1265 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1266 return -EFAULT;
222f1806 1267 buf[len] = 0;
1da177e4
LT		 1268
1269 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1270 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1271
222f1806 1272 if (debug)
25a8b254 1273 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1274
222f1806 1275 i += len;
1da177e4
LT		 1276 sprintf(pg_result, "OK: dst6_max=%s", buf);
1277 return count;
1278 }
1279 if (!strcmp(name, "src6")) {
1280 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1281 if (len < 0)
1282 return len;
1da177e4
LT		 1283
1284 pkt_dev->flags |= F_IPV6;
1285
222f1806 1286 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1287 return -EFAULT;
222f1806 1288 buf[len] = 0;
1da177e4
LT		 1289
1290 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1291 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1292
1293 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1294
222f1806 1295 if (debug)
25a8b254 1296 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1297
1298 i += len;
1da177e4
LT		 1299 sprintf(pg_result, "OK: src6=%s", buf);
1300 return count;
1301 }
1302 if (!strcmp(name, "src_min")) {
1303 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
222f1806
LC		 1304 if (len < 0) {
1305 return len;
1306 }
1307 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1308 return -EFAULT;
222f1806
LC		 1309 buf[len] = 0;
1310 if (strcmp(buf, pkt_dev->src_min) != 0) {
1311 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1312 strncpy(pkt_dev->src_min, buf, len);
1313 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1314 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1315 }
1316 if (debug)
25a8b254 1317 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1318 pkt_dev->src_min);
1da177e4
LT		 1319 i += len;
1320 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1321 return count;
1322 }
1323 if (!strcmp(name, "src_max")) {
1324 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
222f1806
LC		 1325 if (len < 0) {
1326 return len;
1327 }
1328 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1329 return -EFAULT;
222f1806
LC		 1330 buf[len] = 0;
1331 if (strcmp(buf, pkt_dev->src_max) != 0) {
1332 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1333 strncpy(pkt_dev->src_max, buf, len);
1334 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1335 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1336 }
1337 if (debug)
25a8b254 1338 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1339 pkt_dev->src_max);
1da177e4
LT		 1340 i += len;
1341 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1342 return count;
1343 }
1344 if (!strcmp(name, "dst_mac")) {
1345 char *v = valstr;
f404e9a6 1346 unsigned char old_dmac[ETH_ALEN];
1da177e4 1347 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1348 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1349
1da177e4 1350 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1351 if (len < 0) {
1352 return len;
1353 }
1da177e4 1354 memset(valstr, 0, sizeof(valstr));
222f1806 1355 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1356 return -EFAULT;
1357 i += len;
1358
222f1806 1359 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1360 if (*v >= '0' && *v <= '9') {
1361 *m *= 16;
1362 *m += *v - '0';
1363 }
1364 if (*v >= 'A' && *v <= 'F') {
1365 *m *= 16;
1366 *m += *v - 'A' + 10;
1367 }
1368 if (*v >= 'a' && *v <= 'f') {
1369 *m *= 16;
1370 *m += *v - 'a' + 10;
1371 }
1372 if (*v == ':') {
1373 m++;
1374 *m = 0;
1375 }
1376 }
1377
1378 /* Set up Dest MAC */
f404e9a6
KK		 1379 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1380 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1381
1da177e4
LT		 1382 sprintf(pg_result, "OK: dstmac");
1383 return count;
1384 }
1385 if (!strcmp(name, "src_mac")) {
1386 char *v = valstr;
ce5d0b47 1387 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1388 unsigned char *m = pkt_dev->src_mac;
1389
ce5d0b47
AR		 1390 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1391
1da177e4 1392 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1393 if (len < 0) {
1394 return len;
1395 }
1da177e4 1396 memset(valstr, 0, sizeof(valstr));
222f1806 1397 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1398 return -EFAULT;
1399 i += len;
1400
222f1806 1401 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1402 if (*v >= '0' && *v <= '9') {
1403 *m *= 16;
1404 *m += *v - '0';
1405 }
1406 if (*v >= 'A' && *v <= 'F') {
1407 *m *= 16;
1408 *m += *v - 'A' + 10;
1409 }
1410 if (*v >= 'a' && *v <= 'f') {
1411 *m *= 16;
1412 *m += *v - 'a' + 10;
1413 }
1414 if (*v == ':') {
1415 m++;
1416 *m = 0;
1417 }
222f1806 1418 }
1da177e4 1419
ce5d0b47
AR		 1420 /* Set up Src MAC */
1421 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1422 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1423
222f1806 1424 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1425 return count;
1426 }
1427
222f1806
LC		 1428 if (!strcmp(name, "clear_counters")) {
1429 pktgen_clear_counters(pkt_dev);
1430 sprintf(pg_result, "OK: Clearing counters.\n");
1431 return count;
1432 }
1da177e4
LT		 1433
1434 if (!strcmp(name, "flows")) {
1435 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1436 if (len < 0) {
1437 return len;
1438 }
1da177e4
LT		 1439 i += len;
1440 if (value > MAX_CFLOWS)
1441 value = MAX_CFLOWS;
1442
1443 pkt_dev->cflows = value;
1444 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1445 return count;
1446 }
1447
1448 if (!strcmp(name, "flowlen")) {
1449 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1450 if (len < 0) {
1451 return len;
1452 }
1da177e4
LT		 1453 i += len;
1454 pkt_dev->lflow = value;
1455 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1456 return count;
1457 }
222f1806 1458
45b270f8
RO		 1459 if (!strcmp(name, "queue_map_min")) {
1460 len = num_arg(&user_buffer[i], 5, &value);
1461 if (len < 0) {
1462 return len;
1463 }
1464 i += len;
1465 pkt_dev->queue_map_min = value;
1466 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1467 return count;
1468 }
1469
1470 if (!strcmp(name, "queue_map_max")) {
1471 len = num_arg(&user_buffer[i], 5, &value);
1472 if (len < 0) {
1473 return len;
1474 }
1475 i += len;
1476 pkt_dev->queue_map_max = value;
1477 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1478 return count;
1479 }
1480
ca6549af 1481 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1482 unsigned n, cnt;
1483
ca6549af 1484 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1485 if (len < 0)
1486 return len;
ca6549af 1487 i += len;
cfcabdcc 1488 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1489 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1490 cnt += sprintf(pg_result + cnt,
1491 "%08x%s", ntohl(pkt_dev->labels[n]),
1492 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1493
1494 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1495 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1496 pkt_dev->svlan_id = 0xffff;
1497
1498 if (debug)
25a8b254 1499 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1500 }
1501 return count;
1502 }
1503
1504 if (!strcmp(name, "vlan_id")) {
1505 len = num_arg(&user_buffer[i], 4, &value);
1506 if (len < 0) {
1507 return len;
1508 }
1509 i += len;
1510 if (value <= 4095) {
1511 pkt_dev->vlan_id = value; /* turn on VLAN */
1512
1513 if (debug)
25a8b254 1514 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1515
1516 if (debug && pkt_dev->nr_labels)
25a8b254 1517 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1518
1519 pkt_dev->nr_labels = 0; /* turn off MPLS */
1520 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1521 } else {
1522 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1523 pkt_dev->svlan_id = 0xffff;
1524
1525 if (debug)
25a8b254 1526 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1527 }
1528 return count;
1529 }
1530
1531 if (!strcmp(name, "vlan_p")) {
1532 len = num_arg(&user_buffer[i], 1, &value);
1533 if (len < 0) {
1534 return len;
1535 }
1536 i += len;
1537 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1538 pkt_dev->vlan_p = value;
1539 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1540 } else {
1541 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1542 }
1543 return count;
1544 }
1545
1546 if (!strcmp(name, "vlan_cfi")) {
1547 len = num_arg(&user_buffer[i], 1, &value);
1548 if (len < 0) {
1549 return len;
1550 }
1551 i += len;
1552 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1553 pkt_dev->vlan_cfi = value;
1554 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1555 } else {
1556 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1557 }
1558 return count;
1559 }
1560
1561 if (!strcmp(name, "svlan_id")) {
1562 len = num_arg(&user_buffer[i], 4, &value);
1563 if (len < 0) {
1564 return len;
1565 }
1566 i += len;
1567 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1568 pkt_dev->svlan_id = value; /* turn on SVLAN */
1569
1570 if (debug)
25a8b254 1571 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1572
1573 if (debug && pkt_dev->nr_labels)
25a8b254 1574 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1575
1576 pkt_dev->nr_labels = 0; /* turn off MPLS */
1577 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1578 } else {
1579 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1580 pkt_dev->svlan_id = 0xffff;
1581
1582 if (debug)
25a8b254 1583 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1584 }
1585 return count;
1586 }
1587
1588 if (!strcmp(name, "svlan_p")) {
1589 len = num_arg(&user_buffer[i], 1, &value);
1590 if (len < 0) {
1591 return len;
1592 }
1593 i += len;
1594 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1595 pkt_dev->svlan_p = value;
1596 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1597 } else {
1598 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1599 }
1600 return count;
1601 }
1602
1603 if (!strcmp(name, "svlan_cfi")) {
1604 len = num_arg(&user_buffer[i], 1, &value);
1605 if (len < 0) {
1606 return len;
1607 }
1608 i += len;
1609 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1610 pkt_dev->svlan_cfi = value;
1611 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1612 } else {
1613 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1614 }
ca6549af
SW		 1615 return count;
1616 }
1617
1ca7768c
FF		 1618 if (!strcmp(name, "tos")) {
1619 __u32 tmp_value = 0;
1620 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1621 if (len < 0) {
1622 return len;
1623 }
1624 i += len;
1625 if (len == 2) {
1626 pkt_dev->tos = tmp_value;
1627 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1628 } else {
1629 sprintf(pg_result, "ERROR: tos must be 00-ff");
1630 }
1631 return count;
1632 }
1633
1634 if (!strcmp(name, "traffic_class")) {
1635 __u32 tmp_value = 0;
1636 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1637 if (len < 0) {
1638 return len;
1639 }
1640 i += len;
1641 if (len == 2) {
1642 pkt_dev->traffic_class = tmp_value;
1643 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1644 } else {
1645 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1646 }
1647 return count;
1648 }
1649
1da177e4
LT		 1650 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1651 return -EINVAL;
1652}
1653
d50a6b56 1654static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1655{
d50a6b56
SH		 1656 return single_open(file, pktgen_if_show, PDE(inode)->data);
1657}
1da177e4 1658
9a32144e 1659static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1660 .owner = THIS_MODULE,
1661 .open = pktgen_if_open,
1662 .read = seq_read,
1663 .llseek = seq_lseek,
1664 .write = pktgen_if_write,
1665 .release = single_release,
d50a6b56 1666};
1da177e4 1667
d50a6b56
SH		 1668static int pktgen_thread_show(struct seq_file *seq, void *v)
1669{
222f1806 1670 struct pktgen_thread *t = seq->private;
648fda74 1671 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1672
1673 BUG_ON(!t);
1da177e4 1674
222f1806 1675 seq_printf(seq, "Running: ");
1da177e4 1676
222f1806 1677 if_lock(t);
c26a8016 1678 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1679 if (pkt_dev->running)
39df232f 1680 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1681
222f1806
LC		 1682 seq_printf(seq, "\nStopped: ");
1683
c26a8016 1684 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1685 if (!pkt_dev->running)
39df232f 1686 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1687
1688 if (t->result[0])
d50a6b56 1689 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1690 else
d50a6b56 1691 seq_printf(seq, "\nResult: NA\n");
1da177e4 1692
222f1806 1693 if_unlock(t);
1da177e4 1694
d50a6b56 1695 return 0;
1da177e4
LT		 1696}
1697
d50a6b56 1698static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1699 const char __user * user_buffer,
1700 size_t count, loff_t * offset)
1da177e4 1701{
222f1806
LC		 1702 struct seq_file *seq = (struct seq_file *)file->private_data;
1703 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1704 int i = 0, max, len, ret;
1705 char name[40];
222f1806 1706 char *pg_result;
d50a6b56 1707
1da177e4 1708 if (count < 1) {
222f1806 1709 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1710 return -EINVAL;
1711 }
d50a6b56 1712
1da177e4 1713 max = count - i;
222f1806
LC		 1714 len = count_trail_chars(&user_buffer[i], max);
1715 if (len < 0)
d50a6b56
SH		 1716 return len;
1717
1da177e4 1718 i += len;
d50a6b56 1719
1da177e4
LT		 1720 /* Read variable name */
1721
1722 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1723 if (len < 0)
d50a6b56 1724 return len;
222f1806 1725
1da177e4
LT		 1726 memset(name, 0, sizeof(name));
1727 if (copy_from_user(name, &user_buffer[i], len))
1728 return -EFAULT;
1729 i += len;
d50a6b56 1730
222f1806 1731 max = count - i;
1da177e4 1732 len = count_trail_chars(&user_buffer[i], max);
222f1806 1733 if (len < 0)
d50a6b56
SH		 1734 return len;
1735
1da177e4
LT		 1736 i += len;
1737
d50a6b56 1738 if (debug)
25a8b254
DM		 1739 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1740 name, (unsigned long)count);
1da177e4 1741
222f1806 1742 if (!t) {
25a8b254 1743 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1744 ret = -EINVAL;
1745 goto out;
1746 }
1747
1748 pg_result = &(t->result[0]);
1749
222f1806
LC		 1750 if (!strcmp(name, "add_device")) {
1751 char f[32];
1752 memset(f, 0, 32);
1da177e4 1753 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1754 if (len < 0) {
1755 ret = len;
1da177e4
LT		 1756 goto out;
1757 }
222f1806 1758 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1759 return -EFAULT;
1760 i += len;
6146e6a4 1761 mutex_lock(&pktgen_thread_lock);
222f1806 1762 pktgen_add_device(t, f);
6146e6a4 1763 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1764 ret = count;
1765 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1766 goto out;
1767 }
1768
222f1806 1769 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1770 mutex_lock(&pktgen_thread_lock);
95ed63f7 1771 t->control |= T_REMDEVALL;
6146e6a4 1772 mutex_unlock(&pktgen_thread_lock);
222f1806 1773 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1774 ret = count;
222f1806 1775 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1776 goto out;
1777 }
1778
222f1806 1779 if (!strcmp(name, "max_before_softirq")) {
b163911f 1780 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1781 ret = count;
1da177e4
LT		 1782 goto out;
1783 }
1784
1785 ret = -EINVAL;
222f1806 1786out:
1da177e4
LT		 1787 return ret;
1788}
1789
d50a6b56 1790static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1791{
d50a6b56 1792 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1793}
1794
9a32144e 1795static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1796 .owner = THIS_MODULE,
1797 .open = pktgen_thread_open,
1798 .read = seq_read,
1799 .llseek = seq_lseek,
1800 .write = pktgen_thread_write,
1801 .release = single_release,
d50a6b56 1802};
1da177e4
LT		 1803
1804/* Think find or remove for NN */
222f1806 1805static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1806{
1807 struct pktgen_thread *t;
1808 struct pktgen_dev *pkt_dev = NULL;
1809
cdcdbe0b 1810 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1811 pkt_dev = pktgen_find_dev(t, ifname);
1812 if (pkt_dev) {
222f1806
LC		 1813 if (remove) {
1814 if_lock(t);
1815 pkt_dev->removal_mark = 1;
1816 t->control |= T_REMDEV;
1817 if_unlock(t);
1818 }
1da177e4
LT		 1819 break;
1820 }
1da177e4 1821 }
222f1806 1822 return pkt_dev;
1da177e4
LT		 1823}
1824
95ed63f7
AK		 1825/*
1826 * mark a device for removal
1827 */
39df232f 1828static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1829{
1830 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1831 const int max_tries = 10, msec_per_try = 125;
1832 int i = 0;
95ed63f7 1833
6146e6a4 1834 mutex_lock(&pktgen_thread_lock);
25c4e53a 1835 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1836
222f1806 1837 while (1) {
95ed63f7
AK		 1838
1839 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1840 if (pkt_dev == NULL)
1841 break; /* success */
95ed63f7 1842
6146e6a4 1843 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1844 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1845 "to disappear....\n", ifname);
95ed63f7 1846 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1847 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1848
1849 if (++i >= max_tries) {
25a8b254
DM		 1850 printk(KERN_ERR "pktgen_mark_device: timed out after "
1851 "waiting %d msec for device %s to be removed\n",
222f1806 1852 msec_per_try * i, ifname);
95ed63f7
AK		 1853 break;
1854 }
1855
1856 }
1857
6146e6a4 1858 mutex_unlock(&pktgen_thread_lock);
39df232f 1859}
95ed63f7 1860
39df232f
SH		 1861static void pktgen_change_name(struct net_device *dev)
1862{
1863 struct pktgen_thread *t;
1864
1865 list_for_each_entry(t, &pktgen_threads, th_list) {
1866 struct pktgen_dev *pkt_dev;
1867
1868 list_for_each_entry(pkt_dev, &t->if_list, list) {
1869 if (pkt_dev->odev != dev)
1870 continue;
1871
1872 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1873
1874 pkt_dev->entry = create_proc_entry(dev->name, 0600,
1875 pg_proc_dir);
1876 if (!pkt_dev->entry)
1877 printk(KERN_ERR "pktgen: can't move proc "
1878 " entry for '%s'\n", dev->name);
1879 break;
1880 }
1881 }
1da177e4
LT		 1882}
1883
222f1806
LC		 1884static int pktgen_device_event(struct notifier_block *unused,
1885 unsigned long event, void *ptr)
1da177e4 1886{
39df232f 1887 struct net_device *dev = ptr;
1da177e4 1888
721499e8 1889 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1890 return NOTIFY_DONE;
1891
1da177e4
LT		 1892 /* It is OK that we do not hold the group lock right now,
1893 * as we run under the RTNL lock.
1894 */
1895
1896 switch (event) {
39df232f
SH		 1897 case NETDEV_CHANGENAME:
1898 pktgen_change_name(dev);
1da177e4 1899 break;
222f1806 1900
1da177e4 1901 case NETDEV_UNREGISTER:
222f1806 1902 pktgen_mark_device(dev->name);
1da177e4 1903 break;
3ff50b79 1904 }
1da177e4
LT		 1905
1906 return NOTIFY_DONE;
1907}
1908
e6fce5b9
RO		 1909static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname)
1910{
1911 char b[IFNAMSIZ+5];
1912 int i = 0;
1913
1914 for(i=0; ifname[i] != '@'; i++) {
1915 if(i == IFNAMSIZ)
1916 break;
1917
1918 b[i] = ifname[i];
1919 }
1920 b[i] = 0;
1921
1922 return dev_get_by_name(&init_net, b);
1923}
1924
1925
1da177e4
LT		 1926/* Associate pktgen_dev with a device. */
1927
39df232f 1928static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1929{
1da177e4 1930 struct net_device *odev;
39df232f 1931 int err;
1da177e4
LT		 1932
1933 /* Clean old setups */
1da177e4
LT		 1934 if (pkt_dev->odev) {
1935 dev_put(pkt_dev->odev);
222f1806
LC		 1936 pkt_dev->odev = NULL;
1937 }
1da177e4 1938
e6fce5b9 1939 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1940 if (!odev) {
25a8b254 1941 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1942 return -ENODEV;
1da177e4 1943 }
39df232f 1944
1da177e4 1945 if (odev->type != ARPHRD_ETHER) {
25a8b254 1946 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1947 err = -EINVAL;
1948 } else if (!netif_running(odev)) {
25a8b254 1949 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1950 err = -ENETDOWN;
1951 } else {
1952 pkt_dev->odev = odev;
1953 return 0;
1da177e4 1954 }
1da177e4 1955
1da177e4 1956 dev_put(odev);
39df232f 1957 return err;
1da177e4
LT		 1958}
1959
1960/* Read pkt_dev from the interface and set up internal pktgen_dev
1961 * structure to have the right information to create/send packets
1962 */
1963static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
1964{
64c00d81
AG		 1965 int ntxq;
1966
222f1806 1967 if (!pkt_dev->odev) {
25a8b254
DM		 1968 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
1969 "setup_inject.\n");
222f1806
LC		 1970 sprintf(pkt_dev->result,
1971 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1972 return;
1973 }
1974
64c00d81
AG		 1975 /* make sure that we don't pick a non-existing transmit queue */
1976 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 1977
64c00d81
AG		 1978 if (ntxq <= pkt_dev->queue_map_min) {
1979 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1980 "queue_map_min (zero-based) (%d) exceeds valid range "
1981 "[0 - %d] for (%d) queues on %s, resetting\n",
1982 pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
1983 pkt_dev->odev->name);
64c00d81
AG		 1984 pkt_dev->queue_map_min = ntxq - 1;
1985 }
88271660 1986 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 1987 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1988 "queue_map_max (zero-based) (%d) exceeds valid range "
1989 "[0 - %d] for (%d) queues on %s, resetting\n",
1990 pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
1991 pkt_dev->odev->name);
64c00d81
AG		 1992 pkt_dev->queue_map_max = ntxq - 1;
1993 }
1994
222f1806 1995 /* Default to the interface's mac if not explicitly set. */
1da177e4 1996
f404e9a6 1997 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 1998 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 1999
222f1806 2000 /* Set up Dest MAC */
f404e9a6 2001 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2002
222f1806
LC		 2003 /* Set up pkt size */
2004 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2005
2006 if (pkt_dev->flags & F_IPV6) {
1da177e4 2007 /*
4ec93edb 2008 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2009 * gets exported
2010 */
2011
2012#ifdef NOTNOW
222f1806 2013 int i, set = 0, err = 1;
1da177e4
LT		 2014 struct inet6_dev *idev;
2015
222f1806
LC		 2016 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2017 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2018 set = 1;
2019 break;
2020 }
2021
222f1806
LC		 2022 if (!set) {
2023
1da177e4
LT		 2024 /*
2025 * Use linklevel address if unconfigured.
2026 *
2027 * use ipv6_get_lladdr if/when it's get exported
2028 */
2029
8814c4b5 2030 rcu_read_lock();
1da177e4
LT		 2031 if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
2032 struct inet6_ifaddr *ifp;
2033
2034 read_lock_bh(&idev->lock);
222f1806
LC		 2035 for (ifp = idev->addr_list; ifp;
2036 ifp = ifp->if_next) {
2037 if (ifp->scope == IFA_LINK
2038 && !(ifp->
2039 flags & IFA_F_TENTATIVE)) {
2040 ipv6_addr_copy(&pkt_dev->
2041 cur_in6_saddr,
2042 &ifp->addr);
1da177e4
LT		 2043 err = 0;
2044 break;
2045 }
2046 }
2047 read_unlock_bh(&idev->lock);
2048 }
8814c4b5 2049 rcu_read_unlock();
222f1806 2050 if (err)
25a8b254
DM		 2051 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2052 "address not availble.\n");
1da177e4
LT		 2053 }
2054#endif
222f1806 2055 } else {
1da177e4
LT		 2056 pkt_dev->saddr_min = 0;
2057 pkt_dev->saddr_max = 0;
2058 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2059
2060 struct in_device *in_dev;
1da177e4
LT		 2061
2062 rcu_read_lock();
e5ed6399 2063 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2064 if (in_dev) {
2065 if (in_dev->ifa_list) {
222f1806
LC		 2066 pkt_dev->saddr_min =
2067 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2068 pkt_dev->saddr_max = pkt_dev->saddr_min;
2069 }
1da177e4
LT		 2070 }
2071 rcu_read_unlock();
222f1806 2072 } else {
1da177e4
LT		 2073 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2074 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2075 }
2076
2077 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2078 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2079 }
222f1806
LC		 2080 /* Initialize current values. */
2081 pkt_dev->cur_dst_mac_offset = 0;
2082 pkt_dev->cur_src_mac_offset = 0;
2083 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2084 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2085 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2086 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2087 pkt_dev->nflows = 0;
2088}
2089
fd29cf72
SH		 2090
2091static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2092{
2bc481cf
SH		 2093 ktime_t start;
2094 s32 remaining;
2095 struct hrtimer_sleeper t;
2096
2097 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2098 hrtimer_set_expires(&t.timer, spin_until);
2099
2100 remaining = ktime_to_us(hrtimer_expires_remaining(&t.timer));
2101 if (remaining <= 0)
2102 return;
2103
2104 start = ktime_now();
2105 if (remaining < 100)
2106 udelay(remaining); /* really small just spin */
2107 else {
2108 /* see do_nanosleep */
2109 hrtimer_init_sleeper(&t, current);
2110 do {
2111 set_current_state(TASK_INTERRUPTIBLE);
2112 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2113 if (!hrtimer_active(&t.timer))
2114 t.task = NULL;
2115
2116 if (likely(t.task))
1da177e4 2117 schedule();
1da177e4 2118
2bc481cf
SH		 2119 hrtimer_cancel(&t.timer);
2120 } while (t.task && pkt_dev->running && !signal_pending(current));
2121 __set_current_state(TASK_RUNNING);
1da177e4 2122 }
2bc481cf 2123 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), start));
1da177e4
LT		 2124}
2125
16dab72f
JHS		 2126static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2127{
a553e4a6 2128 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2129 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2130 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2131 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2132}
2133
648fda74 2134static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2135{
648fda74 2136 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2137}
2138
2139static inline int f_pick(struct pktgen_dev *pkt_dev)
2140{
2141 int flow = pkt_dev->curfl;
2142
2143 if (pkt_dev->flags & F_FLOW_SEQ) {
2144 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2145 /* reset time */
2146 pkt_dev->flows[flow].count = 0;
1211a645 2147 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2148 pkt_dev->curfl += 1;
2149 if (pkt_dev->curfl >= pkt_dev->cflows)
2150 pkt_dev->curfl = 0; /*reset */
2151 }
2152 } else {
2153 flow = random32() % pkt_dev->cflows;
1211a645 2154 pkt_dev->curfl = flow;
007a531b 2155
1211a645 2156 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2157 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2158 pkt_dev->flows[flow].flags = 0;
2159 }
007a531b
JHS		 2160 }
2161
2162 return pkt_dev->curfl;
2163}
2164
a553e4a6
JHS		 2165
2166#ifdef CONFIG_XFRM
2167/* If there was already an IPSEC SA, we keep it as is, else
2168 * we go look for it ...
2169*/
fea1ab0f 2170static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2171{
2172 struct xfrm_state *x = pkt_dev->flows[flow].x;
2173 if (!x) {
2174 /*slow path: we dont already have xfrm_state*/
5447c5e4
AD		 2175 x = xfrm_stateonly_find(&init_net,
2176 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2177 (xfrm_address_t *)&pkt_dev->cur_saddr,
2178 AF_INET,
2179 pkt_dev->ipsmode,
2180 pkt_dev->ipsproto, 0);
2181 if (x) {
2182 pkt_dev->flows[flow].x = x;
2183 set_pkt_overhead(pkt_dev);
2184 pkt_dev->pkt_overhead+=x->props.header_len;
2185 }
2186
2187 }
2188}
2189#endif
fd2ea0a7
DM		 2190static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2191{
e6fce5b9
RO		 2192
2193 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2194 pkt_dev->cur_queue_map = smp_processor_id();
2195
2196 else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2197 __u16 t;
2198 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2199 t = random32() %
2200 (pkt_dev->queue_map_max -
2201 pkt_dev->queue_map_min + 1)
2202 + pkt_dev->queue_map_min;
2203 } else {
2204 t = pkt_dev->cur_queue_map + 1;
2205 if (t > pkt_dev->queue_map_max)
2206 t = pkt_dev->queue_map_min;
2207 }
2208 pkt_dev->cur_queue_map = t;
2209 }
bfdbc0ac 2210 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2211}
2212
1da177e4
LT		 2213/* Increment/randomize headers according to flags and current values
2214 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2215 */
222f1806
LC		 2216static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2217{
2218 __u32 imn;
2219 __u32 imx;
2220 int flow = 0;
1da177e4 2221
007a531b
JHS		 2222 if (pkt_dev->cflows)
2223 flow = f_pick(pkt_dev);
1da177e4
LT		 2224
2225 /* Deal with source MAC */
222f1806
LC		 2226 if (pkt_dev->src_mac_count > 1) {
2227 __u32 mc;
2228 __u32 tmp;
2229
2230 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2231 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2232 else {
2233 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2234 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2235 pkt_dev->src_mac_count)
2236 pkt_dev->cur_src_mac_offset = 0;
2237 }
2238
2239 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2240 pkt_dev->hh[11] = tmp;
2241 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2242 pkt_dev->hh[10] = tmp;
2243 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2244 pkt_dev->hh[9] = tmp;
2245 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2246 pkt_dev->hh[8] = tmp;
2247 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2248 pkt_dev->hh[7] = tmp;
2249 }
2250
2251 /* Deal with Destination MAC */
2252 if (pkt_dev->dst_mac_count > 1) {
2253 __u32 mc;
2254 __u32 tmp;
2255
2256 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2257 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2258
2259 else {
2260 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2261 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2262 pkt_dev->dst_mac_count) {
2263 pkt_dev->cur_dst_mac_offset = 0;
2264 }
2265 }
2266
2267 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2268 pkt_dev->hh[5] = tmp;
2269 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2270 pkt_dev->hh[4] = tmp;
2271 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2272 pkt_dev->hh[3] = tmp;
2273 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2274 pkt_dev->hh[2] = tmp;
2275 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2276 pkt_dev->hh[1] = tmp;
2277 }
2278
ca6549af
SW		 2279 if (pkt_dev->flags & F_MPLS_RND) {
2280 unsigned i;
e71a4783 2281 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2282 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2283 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2284 ((__force __be32)random32() &
ca6549af
SW		 2285 htonl(0x000fffff));
2286 }
2287
34954ddc 2288 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2289 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2290 }
2291
2292 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2293 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2294 }
2295
222f1806
LC		 2296 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2297 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2298 pkt_dev->cur_udp_src = random32() %
2299 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2300 + pkt_dev->udp_src_min;
222f1806
LC		 2301
2302 else {
1da177e4
LT		 2303 pkt_dev->cur_udp_src++;
2304 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2305 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2306 }
2307 }
2308
2309 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2310 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2311 pkt_dev->cur_udp_dst = random32() %
2312 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2313 + pkt_dev->udp_dst_min;
222f1806 2314 } else {
1da177e4 2315 pkt_dev->cur_udp_dst++;
222f1806 2316 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2317 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2318 }
2319 }
1da177e4
LT		 2320
2321 if (!(pkt_dev->flags & F_IPV6)) {
2322
222f1806
LC		 2323 if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
2324 ntohl(pkt_dev->
2325 saddr_max))) {
1da177e4 2326 __u32 t;
222f1806 2327 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2328 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2329 else {
2330 t = ntohl(pkt_dev->cur_saddr);
2331 t++;
2332 if (t > imx) {
2333 t = imn;
2334 }
2335 }
2336 pkt_dev->cur_saddr = htonl(t);
2337 }
222f1806 2338
007a531b 2339 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2340 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2341 } else {
252e3346
AV		 2342 imn = ntohl(pkt_dev->daddr_min);
2343 imx = ntohl(pkt_dev->daddr_max);
2344 if (imn < imx) {
1da177e4 2345 __u32 t;
252e3346 2346 __be32 s;
1da177e4
LT		 2347 if (pkt_dev->flags & F_IPDST_RND) {
2348
5fa6fc76 2349 t = random32() % (imx - imn) + imn;
252e3346 2350 s = htonl(t);
1da177e4 2351
21cf2253
JP		 2352 while (ipv4_is_loopback(s) ||
2353 ipv4_is_multicast(s) ||
1e637c74 2354 ipv4_is_lbcast(s) ||
21cf2253
JP		 2355 ipv4_is_zeronet(s) ||
2356 ipv4_is_local_multicast(s)) {
5fa6fc76 2357 t = random32() % (imx - imn) + imn;
252e3346 2358 s = htonl(t);
1da177e4 2359 }
252e3346
AV		 2360 pkt_dev->cur_daddr = s;
2361 } else {
1da177e4
LT		 2362 t = ntohl(pkt_dev->cur_daddr);
2363 t++;
2364 if (t > imx) {
2365 t = imn;
2366 }
2367 pkt_dev->cur_daddr = htonl(t);
2368 }
2369 }
222f1806 2370 if (pkt_dev->cflows) {
007a531b 2371 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2372 pkt_dev->flows[flow].cur_daddr =
2373 pkt_dev->cur_daddr;
a553e4a6
JHS		 2374#ifdef CONFIG_XFRM
2375 if (pkt_dev->flags & F_IPSEC_ON)
2376 get_ipsec_sa(pkt_dev, flow);
2377#endif
1da177e4
LT		 2378 pkt_dev->nflows++;
2379 }
2380 }
222f1806
LC		 2381 } else { /* IPV6 * */
2382
2383 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2384 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2385 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2386 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2387 else {
2388 int i;
2389
2390 /* Only random destinations yet */
2391
222f1806 2392 for (i = 0; i < 4; i++) {
1da177e4 2393 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2394 (((__force __be32)random32() |
222f1806
LC		 2395 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2396 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2397 }
222f1806 2398 }
1da177e4
LT		 2399 }
2400
222f1806
LC		 2401 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2402 __u32 t;
2403 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2404 t = random32() %
2405 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2406 + pkt_dev->min_pkt_size;
222f1806 2407 } else {
1da177e4 2408 t = pkt_dev->cur_pkt_size + 1;
222f1806 2409 if (t > pkt_dev->max_pkt_size)
1da177e4 2410 t = pkt_dev->min_pkt_size;
222f1806
LC		 2411 }
2412 pkt_dev->cur_pkt_size = t;
2413 }
1da177e4 2414
fd2ea0a7 2415 set_cur_queue_map(pkt_dev);
45b270f8 2416
1da177e4
LT		 2417 pkt_dev->flows[flow].count++;
2418}
2419
a553e4a6
JHS		 2420
2421#ifdef CONFIG_XFRM
2422static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2423{
2424 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2425 int err = 0;
2426 struct iphdr *iph;
2427
2428 if (!x)
2429 return 0;
2430 /* XXX: we dont support tunnel mode for now until
2431 * we resolve the dst issue */
2432 if (x->props.mode != XFRM_MODE_TRANSPORT)
2433 return 0;
2434
2435 spin_lock(&x->lock);
2436 iph = ip_hdr(skb);
2437
13996378 2438 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2439 if (err)
2440 goto error;
2441 err = x->type->output(x, skb);
2442 if (err)
2443 goto error;
2444
2445 x->curlft.bytes +=skb->len;
2446 x->curlft.packets++;
a553e4a6
JHS		 2447error:
2448 spin_unlock(&x->lock);
2449 return err;
2450}
2451
475ac1e4 2452static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2453{
2454 if (pkt_dev->cflows) {
2455 /* let go of the SAs if we have them */
2456 int i = 0;
5b5f792a 2457 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2458 struct xfrm_state *x = pkt_dev->flows[i].x;
2459 if (x) {
2460 xfrm_state_put(x);
2461 pkt_dev->flows[i].x = NULL;
2462 }
2463 }
2464 }
2465}
2466
475ac1e4 2467static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2468 struct sk_buff *skb, __be16 protocol)
2469{
2470 if (pkt_dev->flags & F_IPSEC_ON) {
2471 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2472 int nhead = 0;
2473 if (x) {
2474 int ret;
2475 __u8 *eth;
2476 nhead = x->props.header_len - skb_headroom(skb);
2477 if (nhead >0) {
2478 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2479 if (ret < 0) {
25a8b254
DM		 2480 printk(KERN_ERR "Error expanding "
2481 "ipsec packet %d\n",ret);
b4bb4ac8 2482 goto err;
a553e4a6
JHS		 2483 }
2484 }
2485
2486 /* ipsec is not expecting ll header */
2487 skb_pull(skb, ETH_HLEN);
2488 ret = pktgen_output_ipsec(skb, pkt_dev);
2489 if (ret) {
25a8b254
DM		 2490 printk(KERN_ERR "Error creating ipsec "
2491 "packet %d\n",ret);
b4bb4ac8 2492 goto err;
a553e4a6
JHS		 2493 }
2494 /* restore ll */
2495 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2496 memcpy(eth, pkt_dev->hh, 12);
2497 *(u16 *) & eth[12] = protocol;
2498 }
2499 }
2500 return 1;
b4bb4ac8
IJ		 2501err:
2502 kfree_skb(skb);
2503 return 0;
a553e4a6
JHS		 2504}
2505#endif
2506
ca6549af
SW		 2507static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2508{
2509 unsigned i;
e71a4783 2510 for (i = 0; i < pkt_dev->nr_labels; i++) {
ca6549af
SW		 2511 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2512 }
2513 mpls--;
2514 *mpls |= MPLS_STACK_BOTTOM;
2515}
2516
0f37c605
AV		 2517static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2518 unsigned int prio)
2519{
2520 return htons(id | (cfi << 12) | (prio << 13));
2521}
2522
222f1806
LC		 2523static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2524 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2525{
2526 struct sk_buff *skb = NULL;
2527 __u8 *eth;
2528 struct udphdr *udph;
2529 int datalen, iplen;
2530 struct iphdr *iph;
222f1806 2531 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2532 __be16 protocol = htons(ETH_P_IP);
ca6549af 2533 __be32 *mpls;
34954ddc
FF		 2534 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2535 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2536 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2537 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2538 u16 queue_map;
ca6549af
SW		 2539
2540 if (pkt_dev->nr_labels)
d5f1ce9a 2541 protocol = htons(ETH_P_MPLS_UC);
222f1806 2542
34954ddc 2543 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2544 protocol = htons(ETH_P_8021Q);
34954ddc 2545
64053bee
RO		 2546 /* Update any of the values, used when we're incrementing various
2547 * fields.
2548 */
fd2ea0a7 2549 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2550 mod_cur_headers(pkt_dev);
2551
7ac5459e 2552 datalen = (odev->hard_header_len + 16) & ~0xf;
e470757d
SH		 2553 skb = __netdev_alloc_skb(odev,
2554 pkt_dev->cur_pkt_size + 64
2555 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2556 if (!skb) {
2557 sprintf(pkt_dev->result, "No memory");
2558 return NULL;
2559 }
2560
7ac5459e 2561 skb_reserve(skb, datalen);
1da177e4
LT		 2562
2563 /* Reserve for ethernet and IP header */
2564 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2565 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2566 if (pkt_dev->nr_labels)
2567 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2568
2569 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2570 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2571 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2572 *svlan_tci = build_tci(pkt_dev->svlan_id,
2573 pkt_dev->svlan_cfi,
2574 pkt_dev->svlan_p);
34954ddc 2575 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2576 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2577 }
2578 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2579 *vlan_tci = build_tci(pkt_dev->vlan_id,
2580 pkt_dev->vlan_cfi,
2581 pkt_dev->vlan_p);
34954ddc 2582 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2583 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2584 }
2585
27a884dc 2586 skb->network_header = skb->tail;
b0e380b1 2587 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2588 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2589 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2590 iph = ip_hdr(skb);
2591 udph = udp_hdr(skb);
1da177e4 2592
1da177e4 2593 memcpy(eth, pkt_dev->hh, 12);
252e3346 2594 *(__be16 *) & eth[12] = protocol;
1da177e4 2595
ca6549af
SW		 2596 /* Eth + IPh + UDPh + mpls */
2597 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2598 pkt_dev->pkt_overhead;
222f1806 2599 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2600 datalen = sizeof(struct pktgen_hdr);
222f1806 2601
1da177e4
LT		 2602 udph->source = htons(pkt_dev->cur_udp_src);
2603 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2604 udph->len = htons(datalen + 8); /* DATA + udphdr */
2605 udph->check = 0; /* No checksum */
1da177e4
LT		 2606
2607 iph->ihl = 5;
2608 iph->version = 4;
2609 iph->ttl = 32;
1ca7768c 2610 iph->tos = pkt_dev->tos;
222f1806 2611 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2612 iph->saddr = pkt_dev->cur_saddr;
2613 iph->daddr = pkt_dev->cur_daddr;
2614 iph->frag_off = 0;
2615 iplen = 20 + 8 + datalen;
2616 iph->tot_len = htons(iplen);
2617 iph->check = 0;
222f1806 2618 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2619 skb->protocol = protocol;
b0e380b1 2620 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2621 pkt_dev->pkt_overhead);
1da177e4
LT		 2622 skb->dev = odev;
2623 skb->pkt_type = PACKET_HOST;
2624
222f1806
LC		 2625 if (pkt_dev->nfrags <= 0)
2626 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2627 else {
2628 int frags = pkt_dev->nfrags;
2629 int i;
2630
222f1806
LC		 2631 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2632
1da177e4
LT		 2633 if (frags > MAX_SKB_FRAGS)
2634 frags = MAX_SKB_FRAGS;
222f1806
LC		 2635 if (datalen > frags * PAGE_SIZE) {
2636 skb_put(skb, datalen - frags * PAGE_SIZE);
2637 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2638 }
2639
2640 i = 0;
2641 while (datalen > 0) {
2642 struct page *page = alloc_pages(GFP_KERNEL, 0);
2643 skb_shinfo(skb)->frags[i].page = page;
2644 skb_shinfo(skb)->frags[i].page_offset = 0;
2645 skb_shinfo(skb)->frags[i].size =
222f1806 2646 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2647 datalen -= skb_shinfo(skb)->frags[i].size;
2648 skb->len += skb_shinfo(skb)->frags[i].size;
2649 skb->data_len += skb_shinfo(skb)->frags[i].size;
2650 i++;
2651 skb_shinfo(skb)->nr_frags = i;
2652 }
2653
2654 while (i < frags) {
2655 int rem;
2656
2657 if (i == 0)
2658 break;
2659
2660 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2661 if (rem == 0)
2662 break;
2663
2664 skb_shinfo(skb)->frags[i - 1].size -= rem;
2665
222f1806
LC		 2666 skb_shinfo(skb)->frags[i] =
2667 skb_shinfo(skb)->frags[i - 1];
1da177e4 2668 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2669 skb_shinfo(skb)->frags[i].page =
2670 skb_shinfo(skb)->frags[i - 1].page;
2671 skb_shinfo(skb)->frags[i].page_offset +=
2672 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2673 skb_shinfo(skb)->frags[i].size = rem;
2674 i++;
2675 skb_shinfo(skb)->nr_frags = i;
2676 }
2677 }
2678
222f1806
LC		 2679 /* Stamp the time, and sequence number, convert them to network byte order */
2680
2681 if (pgh) {
2682 struct timeval timestamp;
2683
2684 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2685 pgh->seq_num = htonl(pkt_dev->seq_num);
2686
2687 do_gettimeofday(&timestamp);
2688 pgh->tv_sec = htonl(timestamp.tv_sec);
2689 pgh->tv_usec = htonl(timestamp.tv_usec);
2690 }
1da177e4 2691
a553e4a6
JHS		 2692#ifdef CONFIG_XFRM
2693 if (!process_ipsec(pkt_dev, skb, protocol))
2694 return NULL;
2695#endif
2696
1da177e4
LT		 2697 return skb;
2698}
2699
2700/*
4ec93edb 2701 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2702 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2703 *
4ec93edb 2704 * Slightly modified for kernel.
1da177e4
LT		 2705 * Should be candidate for net/ipv4/utils.c
2706 * --ro
2707 */
2708
222f1806 2709static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2710{
2711 unsigned int i;
222f1806 2712 unsigned int len = 0;
1da177e4
LT		 2713 unsigned long u;
2714 char suffix[16];
222f1806
LC		 2715 unsigned int prefixlen = 0;
2716 unsigned int suffixlen = 0;
252e3346 2717 __be32 tmp;
cfcabdcc 2718 char *pos;
1da177e4 2719
222f1806
LC		 2720 for (i = 0; i < 16; i++)
2721 ip[i] = 0;
1da177e4
LT		 2722
2723 for (;;) {
2724 if (*s == ':') {
2725 len++;
222f1806
LC		 2726 if (s[1] == ':') { /* Found "::", skip to part 2 */
2727 s += 2;
1da177e4
LT		 2728 len++;
2729 break;
2730 }
2731 s++;
2732 }
1da177e4 2733
cfcabdcc
SH		 2734 u = simple_strtoul(s, &pos, 16);
2735 i = pos - s;
222f1806
LC		 2736 if (!i)
2737 return 0;
2738 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2739
2740 /* the last 4 bytes may be written as IPv4 address */
2741
2742 tmp = in_aton(s);
222f1806
LC		 2743 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2744 return i + len;
1da177e4
LT		 2745 }
2746 ip[prefixlen++] = (u >> 8);
2747 ip[prefixlen++] = (u & 255);
222f1806
LC		 2748 s += i;
2749 len += i;
2750 if (prefixlen == 16)
1da177e4
LT		 2751 return len;
2752 }
2753
2754/* part 2, after "::" */
2755 for (;;) {
2756 if (*s == ':') {
222f1806 2757 if (suffixlen == 0)
1da177e4
LT		 2758 break;
2759 s++;
2760 len++;
222f1806 2761 } else if (suffixlen != 0)
1da177e4 2762 break;
cfcabdcc
SH		 2763
2764 u = simple_strtol(s, &pos, 16);
2765 i = pos - s;
1da177e4 2766 if (!i) {
222f1806
LC		 2767 if (*s)
2768 len--;
1da177e4
LT		 2769 break;
2770 }
222f1806 2771 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2772 tmp = in_aton(s);
222f1806
LC		 2773 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2774 sizeof(tmp));
2775 suffixlen += 4;
2776 len += strlen(s);
1da177e4
LT		 2777 break;
2778 }
2779 suffix[suffixlen++] = (u >> 8);
2780 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2781 s += i;
2782 len += i;
2783 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2784 break;
2785 }
222f1806
LC		 2786 for (i = 0; i < suffixlen; i++)
2787 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2788 return len;
2789}
2790
222f1806
LC		 2791static char tohex(char hexdigit)
2792{
2793 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2794}
2795
222f1806
LC		 2796static int fmt_xlong(char *s, unsigned int i)
2797{
2798 char *bak = s;
2799 *s = tohex((i >> 12) & 0xf);
2800 if (s != bak || *s != '0')
2801 ++s;
2802 *s = tohex((i >> 8) & 0xf);
2803 if (s != bak || *s != '0')
2804 ++s;
2805 *s = tohex((i >> 4) & 0xf);
2806 if (s != bak || *s != '0')
2807 ++s;
2808 *s = tohex(i & 0xf);
2809 return s - bak + 1;
1da177e4
LT		 2810}
2811
222f1806
LC		 2812static unsigned int fmt_ip6(char *s, const char ip[16])
2813{
1da177e4
LT		 2814 unsigned int len;
2815 unsigned int i;
2816 unsigned int temp;
2817 unsigned int compressing;
2818 int j;
2819
222f1806
LC		 2820 len = 0;
2821 compressing = 0;
2822 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2823
2824#ifdef V4MAPPEDPREFIX
222f1806
LC		 2825 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2826 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2827 temp = strlen(s);
2828 return len + temp;
1da177e4
LT		 2829 }
2830#endif
222f1806
LC		 2831 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2832 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2833 if (temp == 0) {
2834 if (!compressing) {
222f1806
LC		 2835 compressing = 1;
2836 if (j == 0) {
2837 *s++ = ':';
2838 ++len;
1da177e4
LT		 2839 }
2840 }
2841 } else {
2842 if (compressing) {
222f1806
LC		 2843 compressing = 0;
2844 *s++ = ':';
2845 ++len;
1da177e4 2846 }
222f1806
LC		 2847 i = fmt_xlong(s, temp);
2848 len += i;
2849 s += i;
2850 if (j < 14) {
1da177e4
LT		 2851 *s++ = ':';
2852 ++len;
2853 }
2854 }
2855 }
2856 if (compressing) {
222f1806
LC		 2857 *s++ = ':';
2858 ++len;
1da177e4 2859 }
222f1806 2860 *s = 0;
1da177e4
LT		 2861 return len;
2862}
2863
222f1806
LC		 2864static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2865 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2866{
2867 struct sk_buff *skb = NULL;
2868 __u8 *eth;
2869 struct udphdr *udph;
2870 int datalen;
2871 struct ipv6hdr *iph;
222f1806 2872 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2873 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2874 __be32 *mpls;
34954ddc
FF		 2875 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2876 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2877 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2878 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2879 u16 queue_map;
ca6549af
SW		 2880
2881 if (pkt_dev->nr_labels)
d5f1ce9a 2882 protocol = htons(ETH_P_MPLS_UC);
64053bee 2883
34954ddc 2884 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2885 protocol = htons(ETH_P_8021Q);
34954ddc 2886
64053bee
RO		 2887 /* Update any of the values, used when we're incrementing various
2888 * fields.
2889 */
fd2ea0a7 2890 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2891 mod_cur_headers(pkt_dev);
2892
e470757d
SH		 2893 skb = __netdev_alloc_skb(odev,
2894 pkt_dev->cur_pkt_size + 64
2895 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2896 if (!skb) {
2897 sprintf(pkt_dev->result, "No memory");
2898 return NULL;
2899 }
2900
2901 skb_reserve(skb, 16);
2902
2903 /* Reserve for ethernet and IP header */
2904 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2905 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2906 if (pkt_dev->nr_labels)
2907 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2908
2909 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2910 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2911 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2912 *svlan_tci = build_tci(pkt_dev->svlan_id,
2913 pkt_dev->svlan_cfi,
2914 pkt_dev->svlan_p);
34954ddc 2915 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2916 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2917 }
2918 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2919 *vlan_tci = build_tci(pkt_dev->vlan_id,
2920 pkt_dev->vlan_cfi,
2921 pkt_dev->vlan_p);
34954ddc 2922 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2923 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2924 }
2925
27a884dc 2926 skb->network_header = skb->tail;
b0e380b1 2927 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2928 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2929 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2930 iph = ipv6_hdr(skb);
2931 udph = udp_hdr(skb);
1da177e4 2932
1da177e4 2933 memcpy(eth, pkt_dev->hh, 12);
252e3346 2934 *(__be16 *) & eth[12] = protocol;
64053bee 2935
ca6549af
SW		 2936 /* Eth + IPh + UDPh + mpls */
2937 datalen = pkt_dev->cur_pkt_size - 14 -
2938 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2939 pkt_dev->pkt_overhead;
1da177e4 2940
222f1806 2941 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2942 datalen = sizeof(struct pktgen_hdr);
2943 if (net_ratelimit())
222f1806
LC		 2944 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2945 datalen);
1da177e4
LT		 2946 }
2947
2948 udph->source = htons(pkt_dev->cur_udp_src);
2949 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2950 udph->len = htons(datalen + sizeof(struct udphdr));
2951 udph->check = 0; /* No checksum */
1da177e4 2952
d5f1ce9a 2953 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2954
1ca7768c
FF		 2955 if (pkt_dev->traffic_class) {
2956 /* Version + traffic class + flow (0) */
252e3346 2957 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2958 }
2959
1da177e4
LT		 2960 iph->hop_limit = 32;
2961
2962 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2963 iph->nexthdr = IPPROTO_UDP;
2964
2965 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2966 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2967
b0e380b1 2968 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2969 pkt_dev->pkt_overhead);
ca6549af 2970 skb->protocol = protocol;
1da177e4
LT		 2971 skb->dev = odev;
2972 skb->pkt_type = PACKET_HOST;
2973
222f1806
LC		 2974 if (pkt_dev->nfrags <= 0)
2975 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2976 else {
2977 int frags = pkt_dev->nfrags;
2978 int i;
2979
222f1806
LC		 2980 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2981
1da177e4
LT		 2982 if (frags > MAX_SKB_FRAGS)
2983 frags = MAX_SKB_FRAGS;
222f1806
LC		 2984 if (datalen > frags * PAGE_SIZE) {
2985 skb_put(skb, datalen - frags * PAGE_SIZE);
2986 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2987 }
2988
2989 i = 0;
2990 while (datalen > 0) {
2991 struct page *page = alloc_pages(GFP_KERNEL, 0);
2992 skb_shinfo(skb)->frags[i].page = page;
2993 skb_shinfo(skb)->frags[i].page_offset = 0;
2994 skb_shinfo(skb)->frags[i].size =
222f1806 2995 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2996 datalen -= skb_shinfo(skb)->frags[i].size;
2997 skb->len += skb_shinfo(skb)->frags[i].size;
2998 skb->data_len += skb_shinfo(skb)->frags[i].size;
2999 i++;
3000 skb_shinfo(skb)->nr_frags = i;
3001 }
3002
3003 while (i < frags) {
3004 int rem;
3005
3006 if (i == 0)
3007 break;
3008
3009 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3010 if (rem == 0)
3011 break;
3012
3013 skb_shinfo(skb)->frags[i - 1].size -= rem;
3014
222f1806
LC		 3015 skb_shinfo(skb)->frags[i] =
3016 skb_shinfo(skb)->frags[i - 1];
1da177e4 3017 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3018 skb_shinfo(skb)->frags[i].page =
3019 skb_shinfo(skb)->frags[i - 1].page;
3020 skb_shinfo(skb)->frags[i].page_offset +=
3021 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3022 skb_shinfo(skb)->frags[i].size = rem;
3023 i++;
3024 skb_shinfo(skb)->nr_frags = i;
3025 }
3026 }
3027
222f1806 3028 /* Stamp the time, and sequence number, convert them to network byte order */
1da177e4 3029 /* should we update cloned packets too ? */
222f1806
LC		 3030 if (pgh) {
3031 struct timeval timestamp;
3032
3033 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3034 pgh->seq_num = htonl(pkt_dev->seq_num);
3035
3036 do_gettimeofday(&timestamp);
3037 pgh->tv_sec = htonl(timestamp.tv_sec);
3038 pgh->tv_usec = htonl(timestamp.tv_usec);
3039 }
34954ddc 3040 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3041
1da177e4
LT		 3042 return skb;
3043}
3044
475ac1e4
SH		 3045static struct sk_buff *fill_packet(struct net_device *odev,
3046 struct pktgen_dev *pkt_dev)
1da177e4 3047{
222f1806 3048 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3049 return fill_packet_ipv6(odev, pkt_dev);
3050 else
3051 return fill_packet_ipv4(odev, pkt_dev);
3052}
3053
222f1806 3054static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3055{
222f1806
LC		 3056 pkt_dev->seq_num = 1;
3057 pkt_dev->idle_acc = 0;
1da177e4 3058 pkt_dev->sofar = 0;
222f1806
LC		 3059 pkt_dev->tx_bytes = 0;
3060 pkt_dev->errors = 0;
1da177e4
LT		 3061}
3062
3063/* Set up structure for sending pkts, clear counters */
3064
3065static void pktgen_run(struct pktgen_thread *t)
3066{
c26a8016 3067 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3068 int started = 0;
3069
25c4e53a 3070 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3071
3072 if_lock(t);
c26a8016 3073 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3074
3075 /*
3076 * setup odev and create initial packet.
3077 */
3078 pktgen_setup_inject(pkt_dev);
3079
222f1806 3080 if (pkt_dev->odev) {
1da177e4 3081 pktgen_clear_counters(pkt_dev);
222f1806 3082 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3083 pkt_dev->skb = NULL;
fd29cf72
SH		 3084 pkt_dev->started_at =
3085 pkt_dev->next_tx = ktime_now();
3086
16dab72f 3087 set_pkt_overhead(pkt_dev);
222f1806 3088
1da177e4
LT		 3089 strcpy(pkt_dev->result, "Starting");
3090 started++;
222f1806 3091 } else
1da177e4
LT		 3092 strcpy(pkt_dev->result, "Error starting");
3093 }
3094 if_unlock(t);
222f1806
LC		 3095 if (started)
3096 t->control &= ~(T_STOP);
1da177e4
LT		 3097}
3098
3099static void pktgen_stop_all_threads_ifs(void)
3100{
cdcdbe0b 3101 struct pktgen_thread *t;
1da177e4 3102
25c4e53a 3103 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3104
6146e6a4 3105 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3106
3107 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3108 t->control |= T_STOP;
cdcdbe0b 3109
6146e6a4 3110 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3111}
3112
648fda74 3113static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3114{
648fda74 3115 const struct pktgen_dev *pkt_dev;
1da177e4 3116
c26a8016 3117 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3118 if (pkt_dev->running)
3119 return 1;
3120 return 0;
1da177e4
LT		 3121}
3122
222f1806 3123static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3124{
222f1806 3125 if_lock(t);
1da177e4 3126
222f1806 3127 while (thread_is_running(t)) {
1da177e4 3128
222f1806 3129 if_unlock(t);
1da177e4 3130
222f1806 3131 msleep_interruptible(100);
1da177e4 3132
222f1806
LC		 3133 if (signal_pending(current))
3134 goto signal;
3135 if_lock(t);
3136 }
3137 if_unlock(t);
3138 return 1;
3139signal:
3140 return 0;
1da177e4
LT		 3141}
3142
3143static int pktgen_wait_all_threads_run(void)
3144{
cdcdbe0b 3145 struct pktgen_thread *t;
1da177e4 3146 int sig = 1;
222f1806 3147
6146e6a4 3148 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3149
3150 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3151 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3152 if (sig == 0)
3153 break;
1da177e4 3154 }
cdcdbe0b
LC		 3155
3156 if (sig == 0)
3157 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3158 t->control |= (T_STOP);
cdcdbe0b 3159
6146e6a4 3160 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3161 return sig;
3162}
3163
3164static void pktgen_run_all_threads(void)
3165{
cdcdbe0b 3166 struct pktgen_thread *t;
1da177e4 3167
25c4e53a 3168 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3169
6146e6a4 3170 mutex_lock(&pktgen_thread_lock);
1da177e4 3171
cdcdbe0b 3172 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3173 t->control |= (T_RUN);
cdcdbe0b 3174
6146e6a4 3175 mutex_unlock(&pktgen_thread_lock);
1da177e4 3176
222f1806
LC		 3177 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3178
1da177e4
LT		 3179 pktgen_wait_all_threads_run();
3180}
3181
eb37b41c
JB		 3182static void pktgen_reset_all_threads(void)
3183{
3184 struct pktgen_thread *t;
3185
3186 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3187
3188 mutex_lock(&pktgen_thread_lock);
3189
3190 list_for_each_entry(t, &pktgen_threads, th_list)
3191 t->control |= (T_REMDEVALL);
3192
3193 mutex_unlock(&pktgen_thread_lock);
3194
3195 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3196
3197 pktgen_wait_all_threads_run();
3198}
3199
1da177e4
LT		 3200static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3201{
fd29cf72 3202 __u64 bps, mbps, pps;
222f1806 3203 char *p = pkt_dev->result;
fd29cf72
SH		 3204 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3205 pkt_dev->started_at);
3206 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3207
3208 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3209 (unsigned long long)ktime_to_us(elapsed),
3210 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3211 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3212 (unsigned long long)pkt_dev->sofar,
3213 pkt_dev->cur_pkt_size, nr_frags);
3214
fd29cf72
SH		 3215 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3216 ktime_to_ns(elapsed));
222f1806
LC		 3217
3218 bps = pps * 8 * pkt_dev->cur_pkt_size;
3219
3220 mbps = bps;
3221 do_div(mbps, 1000000);
3222 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3223 (unsigned long long)pps,
3224 (unsigned long long)mbps,
3225 (unsigned long long)bps,
3226 (unsigned long long)pkt_dev->errors);
1da177e4 3227}
1da177e4
LT		 3228
3229/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3230static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3231{
222f1806 3232 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3233
222f1806 3234 if (!pkt_dev->running) {
25a8b254
DM		 3235 printk(KERN_WARNING "pktgen: interface: %s is already "
3236 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3237 return -EINVAL;
3238 }
1da177e4 3239
3bda06a3
SH		 3240 kfree_skb(pkt_dev->skb);
3241 pkt_dev->skb = NULL;
fd29cf72 3242 pkt_dev->stopped_at = ktime_now();
222f1806 3243 pkt_dev->running = 0;
1da177e4 3244
95ed63f7 3245 show_results(pkt_dev, nr_frags);
1da177e4 3246
222f1806 3247 return 0;
1da177e4
LT		 3248}
3249
222f1806 3250static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3251{
c26a8016 3252 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3253
1da177e4
LT		 3254 if_lock(t);
3255
c26a8016
LC		 3256 list_for_each_entry(pkt_dev, &t->if_list, list) {
3257 if (!pkt_dev->running)
222f1806
LC		 3258 continue;
3259 if (best == NULL)
c26a8016 3260 best = pkt_dev;
fd29cf72 3261 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3262 best = pkt_dev;
1da177e4
LT		 3263 }
3264 if_unlock(t);
222f1806 3265 return best;
1da177e4
LT		 3266}
3267
222f1806
LC		 3268static void pktgen_stop(struct pktgen_thread *t)
3269{
c26a8016 3270 struct pktgen_dev *pkt_dev;
1da177e4 3271
25c4e53a 3272 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3273
222f1806 3274 if_lock(t);
1da177e4 3275
c26a8016
LC		 3276 list_for_each_entry(pkt_dev, &t->if_list, list) {
3277 pktgen_stop_device(pkt_dev);
95ed63f7 3278 }
1da177e4 3279
222f1806 3280 if_unlock(t);
1da177e4
LT		 3281}
3282
95ed63f7
AK		 3283/*
3284 * one of our devices needs to be removed - find it
3285 * and remove it
3286 */
3287static void pktgen_rem_one_if(struct pktgen_thread *t)
3288{
c26a8016
LC		 3289 struct list_head *q, *n;
3290 struct pktgen_dev *cur;
95ed63f7 3291
25c4e53a 3292 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3293
3294 if_lock(t);
3295
c26a8016
LC		 3296 list_for_each_safe(q, n, &t->if_list) {
3297 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3298
222f1806
LC		 3299 if (!cur->removal_mark)
3300 continue;
95ed63f7 3301
86dc1ad2 3302 kfree_skb(cur->skb);
95ed63f7
AK		 3303 cur->skb = NULL;
3304
3305 pktgen_remove_device(t, cur);
3306
3307 break;
3308 }
3309
3310 if_unlock(t);
3311}
3312
222f1806 3313static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3314{
c26a8016
LC		 3315 struct list_head *q, *n;
3316 struct pktgen_dev *cur;
222f1806
LC		 3317
3318 /* Remove all devices, free mem */
95ed63f7 3319
25c4e53a 3320 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3321 if_lock(t);
1da177e4 3322
c26a8016
LC		 3323 list_for_each_safe(q, n, &t->if_list) {
3324 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3325
86dc1ad2 3326 kfree_skb(cur->skb);
95ed63f7
AK		 3327 cur->skb = NULL;
3328
1da177e4
LT		 3329 pktgen_remove_device(t, cur);
3330 }
3331
222f1806 3332 if_unlock(t);
1da177e4
LT		 3333}
3334
222f1806 3335static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3336{
222f1806 3337 /* Remove from the thread list */
1da177e4 3338
ee74baa7 3339 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3340
6146e6a4 3341 mutex_lock(&pktgen_thread_lock);
1da177e4 3342
cdcdbe0b
LC		 3343 list_del(&t->th_list);
3344
6146e6a4 3345 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3346}
3347
3791decb
SH		 3348static void idle(struct pktgen_dev *pkt_dev)
3349{
fd29cf72 3350 ktime_t idle_start = ktime_now();
3791decb
SH		 3351
3352 if (need_resched())
3353 schedule();
3354 else
3355 cpu_relax();
3356
fd29cf72 3357 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3358}
3359
fd29cf72 3360
475ac1e4 3361static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3362{
00829823
SH		 3363 struct net_device *odev = pkt_dev->odev;
3364 int (*xmit)(struct sk_buff *, struct net_device *)
3365 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3366 struct netdev_queue *txq;
fd2ea0a7 3367 u16 queue_map;
1da177e4
LT		 3368 int ret;
3369
fd29cf72 3370 if (pkt_dev->delay) {
2bc481cf 3371 spin(pkt_dev, pkt_dev->next_tx);
1da177e4
LT		 3372
3373 /* This is max DELAY, this has special meaning of
3374 * "never transmit"
3375 */
fd29cf72
SH		 3376 if (pkt_dev->delay == ULLONG_MAX) {
3377 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3378 return;
1da177e4
LT		 3379 }
3380 }
222f1806 3381
fd2ea0a7
DM		 3382 if (!pkt_dev->skb) {
3383 set_cur_queue_map(pkt_dev);
3384 queue_map = pkt_dev->cur_queue_map;
3385 } else {
3386 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3387 }
3388
3389 txq = netdev_get_tx_queue(odev, queue_map);
3791decb
SH		 3390 /* Did we saturate the queue already? */
3391 if (netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)) {
3392 /* If device is down, then all queues are permnantly frozen */
3393 if (netif_running(odev))
3394 idle(pkt_dev);
3395 else
1da177e4 3396 pktgen_stop_device(pkt_dev);
3791decb 3397 return;
1da177e4 3398 }
222f1806 3399
7d7bb1cf
SH		 3400 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3401 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3402 /* build a new pkt */
3403 kfree_skb(pkt_dev->skb);
3404
3405 pkt_dev->skb = fill_packet(odev, pkt_dev);
3406 if (pkt_dev->skb == NULL) {
3407 printk(KERN_ERR "pktgen: ERROR: couldn't "
3408 "allocate skb in fill_packet.\n");
3409 schedule();
3410 pkt_dev->clone_count--; /* back out increment, OOM */
3411 return;
1da177e4 3412 }
7d7bb1cf
SH		 3413
3414 pkt_dev->allocated_skbs++;
3415 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3416 }
95ed63f7 3417
fd2ea0a7
DM		 3418 /* fill_packet() might have changed the queue */
3419 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3420 txq = netdev_get_tx_queue(odev, queue_map);
3421
3422 __netif_tx_lock_bh(txq);
3791decb
SH		 3423 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
3424 pkt_dev->last_ok = 0;
3425 else {
1da177e4 3426 atomic_inc(&(pkt_dev->skb->users));
5b8db2f5
SH		 3427
3428 retry_now:
00829823 3429 ret = (*xmit)(pkt_dev->skb, odev);
5b8db2f5
SH		 3430 switch (ret) {
3431 case NETDEV_TX_OK:
08baf561 3432 txq_trans_update(txq);
222f1806 3433 pkt_dev->last_ok = 1;
1da177e4
LT		 3434 pkt_dev->sofar++;
3435 pkt_dev->seq_num++;
3436 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
5b8db2f5
SH		 3437 break;
3438 case NETDEV_TX_LOCKED:
1da177e4
LT		 3439 cpu_relax();
3440 goto retry_now;
5b8db2f5
SH		 3441 default: /* Drivers are not supposed to return other values! */
3442 if (net_ratelimit())
3443 pr_info("pktgen: %s xmit error: %d\n",
3444 odev->name, ret);
1da177e4 3445 pkt_dev->errors++;
5b8db2f5
SH		 3446 /* fallthru */
3447 case NETDEV_TX_BUSY:
3448 /* Retry it next time */
3449 atomic_dec(&(pkt_dev->skb->users));
1da177e4
LT		 3450 pkt_dev->last_ok = 0;
3451 }
3452
fd29cf72
SH		 3453 if (pkt_dev->delay)
3454 pkt_dev->next_tx = ktime_add_ns(ktime_now(),
3455 pkt_dev->delay);
222f1806 3456 }
fd2ea0a7 3457 __netif_tx_unlock_bh(txq);
222f1806 3458
1da177e4
LT		 3459 /* If pkt_dev->count is zero, then run forever */
3460 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
64e8ff5e
SH		 3461 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3462 if (signal_pending(current))
3463 break;
3464 idle(pkt_dev);
1da177e4 3465 }
222f1806 3466
1da177e4
LT		 3467 /* Done with this */
3468 pktgen_stop_device(pkt_dev);
222f1806 3469 }
222f1806 3470}
1da177e4 3471
4ec93edb 3472/*
1da177e4
LT		 3473 * Main loop of the thread goes here
3474 */
3475
ee74baa7 3476static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3477{
3478 DEFINE_WAIT(wait);
ee74baa7 3479 struct pktgen_thread *t = arg;
222f1806 3480 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3481 int cpu = t->cpu;
1da177e4 3482
ee74baa7 3483 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3484
3485 init_waitqueue_head(&t->queue);
d3ede327 3486 complete(&t->start_done);
1da177e4 3487
ba25f9dc 3488 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3489
ee74baa7 3490 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3491
83144186
RW		 3492 set_freezable();
3493
ee74baa7
DM		 3494 while (!kthread_should_stop()) {
3495 pkt_dev = next_to_run(t);
1da177e4 3496
ee74baa7
DM		 3497 if (!pkt_dev &&
3498 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3499 == 0) {
3500 prepare_to_wait(&(t->queue), &wait,
3501 TASK_INTERRUPTIBLE);
3502 schedule_timeout(HZ / 10);
3503 finish_wait(&(t->queue), &wait);
3504 }
1da177e4 3505
ee74baa7 3506 __set_current_state(TASK_RUNNING);
222f1806 3507
b163911f 3508 if (pkt_dev)
1da177e4
LT		 3509 pktgen_xmit(pkt_dev);
3510
222f1806 3511 if (t->control & T_STOP) {
1da177e4
LT		 3512 pktgen_stop(t);
3513 t->control &= ~(T_STOP);
3514 }
3515
222f1806 3516 if (t->control & T_RUN) {
1da177e4
LT		 3517 pktgen_run(t);
3518 t->control &= ~(T_RUN);
3519 }
3520
222f1806 3521 if (t->control & T_REMDEVALL) {
1da177e4 3522 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3523 t->control &= ~(T_REMDEVALL);
3524 }
3525
222f1806 3526 if (t->control & T_REMDEV) {
95ed63f7 3527 pktgen_rem_one_if(t);
1da177e4
LT		 3528 t->control &= ~(T_REMDEV);
3529 }
3530
09fe3ef4
AM		 3531 try_to_freeze();
3532
ee74baa7 3533 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3534 }
1da177e4 3535
25c4e53a 3536 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3537 pktgen_stop(t);
1da177e4 3538
25c4e53a 3539 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3540 pktgen_rem_all_ifs(t);
1da177e4 3541
25c4e53a 3542 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3543 pktgen_rem_thread(t);
cdcdbe0b 3544
ee74baa7 3545 return 0;
1da177e4
LT		 3546}
3547
222f1806
LC		 3548static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3549 const char *ifname)
1da177e4 3550{
c26a8016 3551 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3552 if_lock(t);
3553
c26a8016 3554 list_for_each_entry(p, &t->if_list, list)
39df232f 3555 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3556 pkt_dev = p;
222f1806
LC		 3557 break;
3558 }
222f1806
LC		 3559
3560 if_unlock(t);
25c4e53a 3561 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3562 return pkt_dev;
1da177e4
LT		 3563}
3564
4ec93edb
YH		 3565/*
3566 * Adds a dev at front of if_list.
1da177e4
LT		 3567 */
3568
222f1806
LC		 3569static int add_dev_to_thread(struct pktgen_thread *t,
3570 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3571{
3572 int rv = 0;
222f1806
LC		 3573
3574 if_lock(t);
3575
3576 if (pkt_dev->pg_thread) {
25a8b254
DM		 3577 printk(KERN_ERR "pktgen: ERROR: already assigned "
3578 "to a thread.\n");
222f1806
LC		 3579 rv = -EBUSY;
3580 goto out;
3581 }
c26a8016
LC		 3582
3583 list_add(&pkt_dev->list, &t->if_list);
222f1806 3584 pkt_dev->pg_thread = t;
1da177e4
LT		 3585 pkt_dev->running = 0;
3586
222f1806
LC		 3587out:
3588 if_unlock(t);
3589 return rv;
1da177e4
LT		 3590}
3591
3592/* Called under thread lock */
3593
222f1806 3594static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3595{
222f1806 3596 struct pktgen_dev *pkt_dev;
39df232f 3597 int err;
222f1806 3598
1da177e4
LT		 3599 /* We don't allow a device to be on several threads */
3600
d50a6b56
SH		 3601 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3602 if (pkt_dev) {
25a8b254 3603 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3604 return -EBUSY;
3605 }
d50a6b56
SH		 3606
3607 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3608 if (!pkt_dev)
3609 return -ENOMEM;
3610
222f1806 3611 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3612 if (pkt_dev->flows == NULL) {
3613 kfree(pkt_dev);
3614 return -ENOMEM;
3615 }
222f1806 3616 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3617
95ed63f7 3618 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3619 pkt_dev->min_pkt_size = ETH_ZLEN;
3620 pkt_dev->max_pkt_size = ETH_ZLEN;
3621 pkt_dev->nfrags = 0;
3622 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3623 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3624 pkt_dev->count = pg_count_d;
3625 pkt_dev->sofar = 0;
222f1806 3626 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3627 pkt_dev->udp_src_max = 9;
3628 pkt_dev->udp_dst_min = 9;
3629 pkt_dev->udp_dst_max = 9;
3630
34954ddc
FF		 3631 pkt_dev->vlan_p = 0;
3632 pkt_dev->vlan_cfi = 0;
3633 pkt_dev->vlan_id = 0xffff;
3634 pkt_dev->svlan_p = 0;
3635 pkt_dev->svlan_cfi = 0;
3636 pkt_dev->svlan_id = 0xffff;
3637
39df232f
SH		 3638 err = pktgen_setup_dev(pkt_dev, ifname);
3639 if (err)
3640 goto out1;
d50a6b56 3641
5efdccbc
DL		 3642 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3643 &pktgen_if_fops, pkt_dev);
39df232f 3644 if (!pkt_dev->entry) {
25a8b254 3645 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3646 PG_PROC_DIR, ifname);
39df232f
SH		 3647 err = -EINVAL;
3648 goto out2;
d50a6b56 3649 }
a553e4a6
JHS		 3650#ifdef CONFIG_XFRM
3651 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3652 pkt_dev->ipsproto = IPPROTO_ESP;
3653#endif
d50a6b56
SH		 3654
3655 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3656out2:
3657 dev_put(pkt_dev->odev);
3658out1:
a553e4a6
JHS		 3659#ifdef CONFIG_XFRM
3660 free_SAs(pkt_dev);
3661#endif
1d0ebfe7 3662 vfree(pkt_dev->flows);
39df232f
SH		 3663 kfree(pkt_dev);
3664 return err;
1da177e4
LT		 3665}
3666
ee74baa7 3667static int __init pktgen_create_thread(int cpu)
1da177e4 3668{
cdcdbe0b 3669 struct pktgen_thread *t;
d50a6b56 3670 struct proc_dir_entry *pe;
ee74baa7 3671 struct task_struct *p;
222f1806
LC		 3672
3673 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3674 if (!t) {
25a8b254
DM		 3675 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3676 "create new thread.\n");
222f1806
LC		 3677 return -ENOMEM;
3678 }
3679
222f1806 3680 spin_lock_init(&t->if_lock);
1da177e4 3681 t->cpu = cpu;
222f1806 3682
ee74baa7
DM		 3683 INIT_LIST_HEAD(&t->if_list);
3684
3685 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3686 init_completion(&t->start_done);
ee74baa7
DM		 3687
3688 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3689 if (IS_ERR(p)) {
25a8b254
DM		 3690 printk(KERN_ERR "pktgen: kernel_thread() failed "
3691 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3692 list_del(&t->th_list);
3693 kfree(t);
3694 return PTR_ERR(p);
3695 }
3696 kthread_bind(p, cpu);
3697 t->tsk = p;
3698
5efdccbc
DL		 3699 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3700 &pktgen_thread_fops, t);
222f1806 3701 if (!pe) {
25a8b254 3702 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3703 PG_PROC_DIR, t->tsk->comm);
3704 kthread_stop(p);
3705 list_del(&t->th_list);
222f1806
LC		 3706 kfree(t);
3707 return -EINVAL;
3708 }
d50a6b56 3709
ee74baa7 3710 wake_up_process(p);
d3ede327 3711 wait_for_completion(&t->start_done);
1da177e4
LT		 3712
3713 return 0;
3714}
3715
4ec93edb
YH		 3716/*
3717 * Removes a device from the thread if_list.
1da177e4 3718 */
222f1806
LC		 3719static void _rem_dev_from_if_list(struct pktgen_thread *t,
3720 struct pktgen_dev *pkt_dev)
1da177e4 3721{
c26a8016
LC		 3722 struct list_head *q, *n;
3723 struct pktgen_dev *p;
1da177e4 3724
c26a8016
LC		 3725 list_for_each_safe(q, n, &t->if_list) {
3726 p = list_entry(q, struct pktgen_dev, list);
3727 if (p == pkt_dev)
3728 list_del(&p->list);
1da177e4
LT		 3729 }
3730}
3731
222f1806
LC		 3732static int pktgen_remove_device(struct pktgen_thread *t,
3733 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3734{
3735
25c4e53a 3736 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3737
222f1806 3738 if (pkt_dev->running) {
25a8b254
DM		 3739 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3740 "running interface, stopping it now.\n");
222f1806
LC		 3741 pktgen_stop_device(pkt_dev);
3742 }
3743
3744 /* Dis-associate from the interface */
1da177e4
LT		 3745
3746 if (pkt_dev->odev) {
3747 dev_put(pkt_dev->odev);
222f1806
LC		 3748 pkt_dev->odev = NULL;
3749 }
3750
1da177e4
LT		 3751 /* And update the thread if_list */
3752
3753 _rem_dev_from_if_list(t, pkt_dev);
3754
39df232f
SH		 3755 if (pkt_dev->entry)
3756 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3757
a553e4a6
JHS		 3758#ifdef CONFIG_XFRM
3759 free_SAs(pkt_dev);
3760#endif
1d0ebfe7 3761 vfree(pkt_dev->flows);
1da177e4 3762 kfree(pkt_dev);
222f1806 3763 return 0;
1da177e4
LT		 3764}
3765
222f1806 3766static int __init pg_init(void)
1da177e4
LT		 3767{
3768 int cpu;
d50a6b56 3769 struct proc_dir_entry *pe;
1da177e4 3770
25a8b254 3771 printk(KERN_INFO "%s", version);
1da177e4 3772
457c4cbc 3773 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3774 if (!pg_proc_dir)
3775 return -ENODEV;
1da177e4 3776
25296d59 3777 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3778 if (pe == NULL) {
25a8b254
DM		 3779 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3780 "procfs entry.\n", PGCTRL);
457c4cbc 3781 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3782 return -EINVAL;
3783 }
1da177e4 3784
1da177e4
LT		 3785 /* Register us to receive netdevice events */
3786 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3787
670c02c2 3788 for_each_online_cpu(cpu) {
8024bb24 3789 int err;
1da177e4 3790
ee74baa7 3791 err = pktgen_create_thread(cpu);
8024bb24 3792 if (err)
25a8b254
DM		 3793 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3794 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3795 }
8024bb24
LC		 3796
3797 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3798 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3799 "all threads\n");
8024bb24
LC		 3800 unregister_netdevice_notifier(&pktgen_notifier_block);
3801 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3802 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3803 return -ENODEV;
3804 }
3805
222f1806 3806 return 0;
1da177e4
LT		 3807}
3808
3809static void __exit pg_cleanup(void)
3810{
cdcdbe0b
LC		 3811 struct pktgen_thread *t;
3812 struct list_head *q, *n;
1da177e4
LT		 3813 wait_queue_head_t queue;
3814 init_waitqueue_head(&queue);
3815
222f1806 3816 /* Stop all interfaces & threads */
1da177e4 3817
cdcdbe0b
LC		 3818 list_for_each_safe(q, n, &pktgen_threads) {
3819 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3820 kthread_stop(t->tsk);
3821 kfree(t);
222f1806 3822 }
1da177e4 3823
222f1806 3824 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3825 unregister_netdevice_notifier(&pktgen_notifier_block);
3826
222f1806 3827 /* Clean up proc file system */
d50a6b56 3828 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3829 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3830}
3831
1da177e4
LT		 3832module_init(pg_init);
3833module_exit(pg_cleanup);
3834
3835MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3836MODULE_DESCRIPTION("Packet Generator tool");
3837MODULE_LICENSE("GPL");
3838module_param(pg_count_d, int, 0);
3839module_param(pg_delay_d, int, 0);
3840module_param(pg_clone_skb_d, int, 0);
3841module_param(debug, int, 0);
Linux kernel - Deliverables
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