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pktgen: cleanup clone count test
[GitHub/mt8127/android_kernel_alcatel_ttab.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>
09fe3ef4 134#include <linux/freezer.h>
1da177e4
LT		 135#include <linux/delay.h>
136#include <linux/timer.h>
cdcdbe0b 137#include <linux/list.h>
1da177e4
LT		 138#include <linux/init.h>
139#include <linux/skbuff.h>
140#include <linux/netdevice.h>
141#include <linux/inet.h>
142#include <linux/inetdevice.h>
143#include <linux/rtnetlink.h>
144#include <linux/if_arp.h>
34954ddc 145#include <linux/if_vlan.h>
1da177e4
LT		 146#include <linux/in.h>
147#include <linux/ip.h>
148#include <linux/ipv6.h>
149#include <linux/udp.h>
150#include <linux/proc_fs.h>
d50a6b56 151#include <linux/seq_file.h>
1da177e4 152#include <linux/wait.h>
f404e9a6 153#include <linux/etherdevice.h>
ee74baa7 154#include <linux/kthread.h>
457c4cbc 155#include <net/net_namespace.h>
1da177e4
LT		 156#include <net/checksum.h>
157#include <net/ipv6.h>
158#include <net/addrconf.h>
a553e4a6
JHS		 159#ifdef CONFIG_XFRM
160#include <net/xfrm.h>
161#endif
1da177e4
LT		 162#include <asm/byteorder.h>
163#include <linux/rcupdate.h>
1977f032 164#include <linux/bitops.h>
1da177e4
LT		 165#include <asm/io.h>
166#include <asm/dma.h>
167#include <asm/uaccess.h>
222f1806 168#include <asm/div64.h> /* do_div */
1da177e4
LT		 169#include <asm/timex.h>
170
e6fce5b9 171#define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
1da177e4 172
1da177e4 173#define IP_NAME_SZ 32
ca6549af 174#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 175#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 176
177/* Device flag bits */
222f1806
LC		 178#define F_IPSRC_RND (1<<0) /* IP-Src Random */
179#define F_IPDST_RND (1<<1) /* IP-Dst Random */
180#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
181#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
182#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
183#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
184#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
185#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 186#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 187#define F_VID_RND (1<<9) /* Random VLAN ID */
188#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 189#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 190#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 191#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 192#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
1da177e4
LT		 193
194/* Thread control flag bits */
222f1806
LC		 195#define T_TERMINATE (1<<0)
196#define T_STOP (1<<1) /* Stop run */
197#define T_RUN (1<<2) /* Start run */
198#define T_REMDEVALL (1<<3) /* Remove all devs */
199#define T_REMDEV (1<<4) /* Remove one dev */
1da177e4 200
1da177e4
LT		 201/* If lock -- can be removed after some work */
202#define if_lock(t) spin_lock(&(t->if_lock));
203#define if_unlock(t) spin_unlock(&(t->if_lock));
204
205/* Used to help with determining the pkts on receive */
206#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 207#define PG_PROC_DIR "pktgen"
208#define PGCTRL "pgctrl"
209static struct proc_dir_entry *pg_proc_dir = NULL;
1da177e4
LT		 210
211#define MAX_CFLOWS 65536
212
34954ddc
FF		 213#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
214#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
215
222f1806 216struct flow_state {
252e3346 217 __be32 cur_daddr;
222f1806 218 int count;
a553e4a6
JHS		 219#ifdef CONFIG_XFRM
220 struct xfrm_state *x;
221#endif
007a531b 222 __u32 flags;
1da177e4
LT		 223};
224
007a531b
JHS		 225/* flow flag bits */
226#define F_INIT (1<<0) /* flow has been initialized */
227
1da177e4 228struct pktgen_dev {
1da177e4
LT		 229 /*
230 * Try to keep frequent/infrequent used vars. separated.
231 */
39df232f
SH		 232 struct proc_dir_entry *entry; /* proc file */
233 struct pktgen_thread *pg_thread;/* the owner */
c26a8016 234 struct list_head list; /* Used for chaining in the thread's run-queue */
1da177e4 235
222f1806 236 int running; /* if this changes to false, the test will stop */
1da177e4 237
222f1806
LC		 238 /* If min != max, then we will either do a linear iteration, or
239 * we will do a random selection from within the range.
240 */
241 __u32 flags;
95ed63f7
AK		 242 int removal_mark; /* non-zero => the device is marked for
243 * removal by worker thread */
1da177e4 244
222f1806
LC		 245 int min_pkt_size; /* = ETH_ZLEN; */
246 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 247 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806
LC		 248 int nfrags;
249 __u32 delay_us; /* Default delay */
250 __u32 delay_ns;
251 __u64 count; /* Default No packets to send */
252 __u64 sofar; /* How many pkts we've sent so far */
253 __u64 tx_bytes; /* How many bytes we've transmitted */
254 __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
255
256 /* runtime counters relating to clone_skb */
257 __u64 next_tx_us; /* timestamp of when to tx next */
258 __u32 next_tx_ns;
259
260 __u64 allocated_skbs;
261 __u32 clone_count;
262 int last_ok; /* Was last skb sent?
263 * Or a failed transmit of some sort? This will keep
264 * sequence numbers in order, for example.
265 */
266 __u64 started_at; /* micro-seconds */
267 __u64 stopped_at; /* micro-seconds */
268 __u64 idle_acc; /* micro-seconds */
269 __u32 seq_num;
270
271 int clone_skb; /* Use multiple SKBs during packet gen. If this number
272 * is greater than 1, then that many copies of the same
273 * packet will be sent before a new packet is allocated.
274 * For instance, if you want to send 1024 identical packets
275 * before creating a new packet, set clone_skb to 1024.
276 */
277
278 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
279 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
280 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
281 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282
283 struct in6_addr in6_saddr;
284 struct in6_addr in6_daddr;
285 struct in6_addr cur_in6_daddr;
286 struct in6_addr cur_in6_saddr;
1da177e4 287 /* For ranges */
222f1806
LC		 288 struct in6_addr min_in6_daddr;
289 struct in6_addr max_in6_daddr;
290 struct in6_addr min_in6_saddr;
291 struct in6_addr max_in6_saddr;
292
293 /* If we're doing ranges, random or incremental, then this
294 * defines the min/max for those ranges.
295 */
252e3346
AV		 296 __be32 saddr_min; /* inclusive, source IP address */
297 __be32 saddr_max; /* exclusive, source IP address */
298 __be32 daddr_min; /* inclusive, dest IP address */
299 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 300
301 __u16 udp_src_min; /* inclusive, source UDP port */
302 __u16 udp_src_max; /* exclusive, source UDP port */
303 __u16 udp_dst_min; /* inclusive, dest UDP port */
304 __u16 udp_dst_max; /* exclusive, dest UDP port */
305
1ca7768c
FF		 306 /* DSCP + ECN */
307 __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
308 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
309
ca6549af
SW		 310 /* MPLS */
311 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
312 __be32 labels[MAX_MPLS_LABELS];
313
34954ddc
FF		 314 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
315 __u8 vlan_p;
316 __u8 vlan_cfi;
317 __u16 vlan_id; /* 0xffff means no vlan tag */
318
319 __u8 svlan_p;
320 __u8 svlan_cfi;
321 __u16 svlan_id; /* 0xffff means no svlan tag */
322
222f1806
LC		 323 __u32 src_mac_count; /* How many MACs to iterate through */
324 __u32 dst_mac_count; /* How many MACs to iterate through */
325
326 unsigned char dst_mac[ETH_ALEN];
327 unsigned char src_mac[ETH_ALEN];
328
329 __u32 cur_dst_mac_offset;
330 __u32 cur_src_mac_offset;
252e3346
AV		 331 __be32 cur_saddr;
332 __be32 cur_daddr;
222f1806
LC		 333 __u16 cur_udp_dst;
334 __u16 cur_udp_src;
45b270f8 335 __u16 cur_queue_map;
222f1806
LC		 336 __u32 cur_pkt_size;
337
338 __u8 hh[14];
339 /* = {
340 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
341
342 We fill in SRC address later
343 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
344 0x08, 0x00
345 };
346 */
347 __u16 pad; /* pad out the hh struct to an even 16 bytes */
348
349 struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
350 * are transmitting the same one multiple times
351 */
352 struct net_device *odev; /* The out-going device. Note that the device should
353 * have it's pg_info pointer pointing back to this
354 * device. This will be set when the user specifies
355 * the out-going device name (not when the inject is
356 * started as it used to do.)
357 */
1da177e4 358 struct flow_state *flows;
222f1806
LC		 359 unsigned cflows; /* Concurrent flows (config) */
360 unsigned lflow; /* Flow length (config) */
361 unsigned nflows; /* accumulated flows (stats) */
007a531b 362 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 363
364 u16 queue_map_min;
365 u16 queue_map_max;
366
a553e4a6
JHS		 367#ifdef CONFIG_XFRM
368 __u8 ipsmode; /* IPSEC mode (config) */
369 __u8 ipsproto; /* IPSEC type (config) */
370#endif
39df232f 371 char result[512];
1da177e4
LT		 372};
373
374struct pktgen_hdr {
252e3346
AV		 375 __be32 pgh_magic;
376 __be32 seq_num;
377 __be32 tv_sec;
378 __be32 tv_usec;
1da177e4
LT		 379};
380
381struct pktgen_thread {
222f1806 382 spinlock_t if_lock;
c26a8016 383 struct list_head if_list; /* All device here */
cdcdbe0b 384 struct list_head th_list;
ee74baa7 385 struct task_struct *tsk;
222f1806 386 char result[512];
222f1806
LC		 387
388 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
389
390 u32 control;
1da177e4
LT		 391 int cpu;
392
222f1806 393 wait_queue_head_t queue;
d3ede327 394 struct completion start_done;
1da177e4
LT		 395};
396
397#define REMOVE 1
398#define FIND 0
399
1da177e4 400/** Convert to micro-seconds */
222f1806 401static inline __u64 tv_to_us(const struct timeval *tv)
1da177e4 402{
222f1806
LC		 403 __u64 us = tv->tv_usec;
404 us += (__u64) tv->tv_sec * (__u64) 1000000;
405 return us;
1da177e4
LT		 406}
407
6db105db 408static __u64 getCurUs(void)
1da177e4 409{
222f1806
LC		 410 struct timeval tv;
411 do_gettimeofday(&tv);
412 return tv_to_us(&tv);
1da177e4
LT		 413}
414
1da177e4
LT		 415/* old include end */
416
65c5b786 417static const char version[] __initconst = VERSION;
1da177e4 418
222f1806
LC		 419static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
420static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
421static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
422 const char *ifname);
1da177e4
LT		 423static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
424static void pktgen_run_all_threads(void);
eb37b41c 425static void pktgen_reset_all_threads(void);
1da177e4 426static void pktgen_stop_all_threads_ifs(void);
3bda06a3 427
222f1806 428static void pktgen_stop(struct pktgen_thread *t);
1da177e4 429static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 430
222f1806
LC		 431static unsigned int scan_ip6(const char *s, char ip[16]);
432static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 433
434/* Module parameters, defaults. */
65c5b786
SH		 435static int pg_count_d __read_mostly = 1000;
436static int pg_delay_d __read_mostly;
437static int pg_clone_skb_d __read_mostly;
438static int debug __read_mostly;
1da177e4 439
222fa076 440static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 441static LIST_HEAD(pktgen_threads);
1da177e4 442
1da177e4
LT		 443static struct notifier_block pktgen_notifier_block = {
444 .notifier_call = pktgen_device_event,
445};
446
1da177e4 447/*
4ec93edb 448 * /proc handling functions
1da177e4
LT		 449 *
450 */
451
d50a6b56 452static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 453{
d50a6b56
SH		 454 seq_puts(seq, VERSION);
455 return 0;
1da177e4
LT		 456}
457
222f1806
LC		 458static ssize_t pgctrl_write(struct file *file, const char __user * buf,
459 size_t count, loff_t * ppos)
1da177e4 460{
1da177e4 461 int err = 0;
d50a6b56 462 char data[128];
1da177e4 463
222f1806
LC		 464 if (!capable(CAP_NET_ADMIN)) {
465 err = -EPERM;
1da177e4 466 goto out;
222f1806 467 }
1da177e4 468
d50a6b56
SH		 469 if (count > sizeof(data))
470 count = sizeof(data);
1da177e4 471
1da177e4 472 if (copy_from_user(data, buf, count)) {
b4099fab 473 err = -EFAULT;
d50a6b56 474 goto out;
222f1806
LC		 475 }
476 data[count - 1] = 0; /* Make string */
1da177e4 477
222f1806 478 if (!strcmp(data, "stop"))
1da177e4
LT		 479 pktgen_stop_all_threads_ifs();
480
222f1806 481 else if (!strcmp(data, "start"))
1da177e4
LT		 482 pktgen_run_all_threads();
483
eb37b41c
JB		 484 else if (!strcmp(data, "reset"))
485 pktgen_reset_all_threads();
486
222f1806 487 else
25a8b254 488 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 489
490 err = count;
491
222f1806
LC		 492out:
493 return err;
1da177e4
LT		 494}
495
d50a6b56
SH		 496static int pgctrl_open(struct inode *inode, struct file *file)
497{
498 return single_open(file, pgctrl_show, PDE(inode)->data);
499}
500
9a32144e 501static const struct file_operations pktgen_fops = {
222f1806
LC		 502 .owner = THIS_MODULE,
503 .open = pgctrl_open,
504 .read = seq_read,
505 .llseek = seq_lseek,
506 .write = pgctrl_write,
507 .release = single_release,
d50a6b56
SH		 508};
509
510static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 511{
648fda74 512 const struct pktgen_dev *pkt_dev = seq->private;
222f1806
LC		 513 __u64 sa;
514 __u64 stopped;
515 __u64 now = getCurUs();
516
517 seq_printf(seq,
518 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
519 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
520 pkt_dev->max_pkt_size);
521
522 seq_printf(seq,
523 " frags: %d delay: %u clone_skb: %d ifname: %s\n",
524 pkt_dev->nfrags,
525 1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
39df232f 526 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 527
528 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
529 pkt_dev->lflow);
530
45b270f8
RO		 531 seq_printf(seq,
532 " queue_map_min: %u queue_map_max: %u\n",
533 pkt_dev->queue_map_min,
534 pkt_dev->queue_map_max);
535
222f1806
LC		 536 if (pkt_dev->flags & F_IPV6) {
537 char b1[128], b2[128], b3[128];
538 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
539 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
540 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
541 seq_printf(seq,
542 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
543 b2, b3);
544
545 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
546 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
547 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
548 seq_printf(seq,
549 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
550 b2, b3);
551
552 } else
553 seq_printf(seq,
554 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
555 pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
556 pkt_dev->src_max);
1da177e4 557
222f1806 558 seq_puts(seq, " src_mac: ");
1da177e4 559
e174961c
JB		 560 seq_printf(seq, "%pM ",
561 is_zero_ether_addr(pkt_dev->src_mac) ?
562 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 563
564 seq_printf(seq, "dst_mac: ");
e174961c 565 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 566
567 seq_printf(seq,
568 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
569 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
570 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
571
572 seq_printf(seq,
ca6549af 573 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 574 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 575
ca6549af
SW		 576 if (pkt_dev->nr_labels) {
577 unsigned i;
578 seq_printf(seq, " mpls: ");
e71a4783 579 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 580 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
581 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
582 }
583
34954ddc
FF		 584 if (pkt_dev->vlan_id != 0xffff) {
585 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
586 pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
587 }
588
589 if (pkt_dev->svlan_id != 0xffff) {
590 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
591 pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
592 }
593
1ca7768c
FF		 594 if (pkt_dev->tos) {
595 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
596 }
597
598 if (pkt_dev->traffic_class) {
599 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
600 }
601
ca6549af
SW		 602 seq_printf(seq, " Flags: ");
603
222f1806
LC		 604 if (pkt_dev->flags & F_IPV6)
605 seq_printf(seq, "IPV6 ");
1da177e4 606
222f1806
LC		 607 if (pkt_dev->flags & F_IPSRC_RND)
608 seq_printf(seq, "IPSRC_RND ");
1da177e4 609
222f1806
LC		 610 if (pkt_dev->flags & F_IPDST_RND)
611 seq_printf(seq, "IPDST_RND ");
1da177e4 612
222f1806
LC		 613 if (pkt_dev->flags & F_TXSIZE_RND)
614 seq_printf(seq, "TXSIZE_RND ");
1da177e4 615
222f1806
LC		 616 if (pkt_dev->flags & F_UDPSRC_RND)
617 seq_printf(seq, "UDPSRC_RND ");
1da177e4 618
222f1806
LC		 619 if (pkt_dev->flags & F_UDPDST_RND)
620 seq_printf(seq, "UDPDST_RND ");
1da177e4 621
ca6549af
SW		 622 if (pkt_dev->flags & F_MPLS_RND)
623 seq_printf(seq, "MPLS_RND ");
624
45b270f8
RO		 625 if (pkt_dev->flags & F_QUEUE_MAP_RND)
626 seq_printf(seq, "QUEUE_MAP_RND ");
627
e6fce5b9
RO		 628 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
629 seq_printf(seq, "QUEUE_MAP_CPU ");
630
007a531b
JHS		 631 if (pkt_dev->cflows) {
632 if (pkt_dev->flags & F_FLOW_SEQ)
633 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
634 else
635 seq_printf(seq, "FLOW_RND ");
636 }
637
a553e4a6
JHS		 638#ifdef CONFIG_XFRM
639 if (pkt_dev->flags & F_IPSEC_ON)
640 seq_printf(seq, "IPSEC ");
641#endif
642
222f1806
LC		 643 if (pkt_dev->flags & F_MACSRC_RND)
644 seq_printf(seq, "MACSRC_RND ");
1da177e4 645
222f1806
LC		 646 if (pkt_dev->flags & F_MACDST_RND)
647 seq_printf(seq, "MACDST_RND ");
1da177e4 648
34954ddc
FF		 649 if (pkt_dev->flags & F_VID_RND)
650 seq_printf(seq, "VID_RND ");
651
652 if (pkt_dev->flags & F_SVID_RND)
653 seq_printf(seq, "SVID_RND ");
654
222f1806
LC		 655 seq_puts(seq, "\n");
656
657 sa = pkt_dev->started_at;
658 stopped = pkt_dev->stopped_at;
659 if (pkt_dev->running)
660 stopped = now; /* not really stopped, more like last-running-at */
1da177e4 661
222f1806
LC		 662 seq_printf(seq,
663 "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n",
664 (unsigned long long)pkt_dev->sofar,
665 (unsigned long long)pkt_dev->errors, (unsigned long long)sa,
666 (unsigned long long)stopped,
667 (unsigned long long)pkt_dev->idle_acc);
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
LT		 952 i += len;
953 if (value == 0x7FFFFFFF) {
954 pkt_dev->delay_us = 0x7FFFFFFF;
955 pkt_dev->delay_ns = 0;
956 } else {
957 pkt_dev->delay_us = value / 1000;
958 pkt_dev->delay_ns = value % 1000;
959 }
222f1806
LC		 960 sprintf(pg_result, "OK: delay=%u",
961 1000 * pkt_dev->delay_us + pkt_dev->delay_ns);
1da177e4
LT		 962 return count;
963 }
222f1806 964 if (!strcmp(name, "udp_src_min")) {
1da177e4 965 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 966 if (len < 0) {
967 return len;
968 }
1da177e4 969 i += len;
222f1806
LC		 970 if (value != pkt_dev->udp_src_min) {
971 pkt_dev->udp_src_min = value;
972 pkt_dev->cur_udp_src = value;
973 }
1da177e4
LT		 974 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
975 return count;
976 }
222f1806 977 if (!strcmp(name, "udp_dst_min")) {
1da177e4 978 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 979 if (len < 0) {
980 return len;
981 }
1da177e4 982 i += len;
222f1806
LC		 983 if (value != pkt_dev->udp_dst_min) {
984 pkt_dev->udp_dst_min = value;
985 pkt_dev->cur_udp_dst = value;
986 }
1da177e4
LT		 987 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
988 return count;
989 }
222f1806 990 if (!strcmp(name, "udp_src_max")) {
1da177e4 991 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 992 if (len < 0) {
993 return len;
994 }
1da177e4 995 i += len;
222f1806
LC		 996 if (value != pkt_dev->udp_src_max) {
997 pkt_dev->udp_src_max = value;
998 pkt_dev->cur_udp_src = value;
999 }
1da177e4
LT		 1000 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1001 return count;
1002 }
222f1806 1003 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1004 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1005 if (len < 0) {
1006 return len;
1007 }
1da177e4 1008 i += len;
222f1806
LC		 1009 if (value != pkt_dev->udp_dst_max) {
1010 pkt_dev->udp_dst_max = value;
1011 pkt_dev->cur_udp_dst = value;
1012 }
1da177e4
LT		 1013 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1014 return count;
1015 }
1016 if (!strcmp(name, "clone_skb")) {
1017 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1018 if (len < 0) {
1019 return len;
1020 }
1da177e4 1021 i += len;
222f1806
LC		 1022 pkt_dev->clone_skb = value;
1023
1da177e4
LT		 1024 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1025 return count;
1026 }
1027 if (!strcmp(name, "count")) {
1028 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1029 if (len < 0) {
1030 return len;
1031 }
1da177e4
LT		 1032 i += len;
1033 pkt_dev->count = value;
1034 sprintf(pg_result, "OK: count=%llu",
222f1806 1035 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1036 return count;
1037 }
1038 if (!strcmp(name, "src_mac_count")) {
1039 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1040 if (len < 0) {
1041 return len;
1042 }
1da177e4
LT		 1043 i += len;
1044 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1045 pkt_dev->src_mac_count = value;
1046 pkt_dev->cur_src_mac_offset = 0;
1047 }
1048 sprintf(pg_result, "OK: src_mac_count=%d",
1049 pkt_dev->src_mac_count);
1da177e4
LT		 1050 return count;
1051 }
1052 if (!strcmp(name, "dst_mac_count")) {
1053 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1054 if (len < 0) {
1055 return len;
1056 }
1da177e4
LT		 1057 i += len;
1058 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1059 pkt_dev->dst_mac_count = value;
1060 pkt_dev->cur_dst_mac_offset = 0;
1061 }
1062 sprintf(pg_result, "OK: dst_mac_count=%d",
1063 pkt_dev->dst_mac_count);
1da177e4
LT		 1064 return count;
1065 }
1066 if (!strcmp(name, "flag")) {
222f1806
LC		 1067 char f[32];
1068 memset(f, 0, 32);
1da177e4 1069 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1070 if (len < 0) {
1071 return len;
1072 }
1da177e4
LT		 1073 if (copy_from_user(f, &user_buffer[i], len))
1074 return -EFAULT;
1075 i += len;
222f1806
LC		 1076 if (strcmp(f, "IPSRC_RND") == 0)
1077 pkt_dev->flags |= F_IPSRC_RND;
1078
1079 else if (strcmp(f, "!IPSRC_RND") == 0)
1080 pkt_dev->flags &= ~F_IPSRC_RND;
1081
1082 else if (strcmp(f, "TXSIZE_RND") == 0)
1083 pkt_dev->flags |= F_TXSIZE_RND;
1084
1085 else if (strcmp(f, "!TXSIZE_RND") == 0)
1086 pkt_dev->flags &= ~F_TXSIZE_RND;
1087
1088 else if (strcmp(f, "IPDST_RND") == 0)
1089 pkt_dev->flags |= F_IPDST_RND;
1090
1091 else if (strcmp(f, "!IPDST_RND") == 0)
1092 pkt_dev->flags &= ~F_IPDST_RND;
1093
1094 else if (strcmp(f, "UDPSRC_RND") == 0)
1095 pkt_dev->flags |= F_UDPSRC_RND;
1096
1097 else if (strcmp(f, "!UDPSRC_RND") == 0)
1098 pkt_dev->flags &= ~F_UDPSRC_RND;
1099
1100 else if (strcmp(f, "UDPDST_RND") == 0)
1101 pkt_dev->flags |= F_UDPDST_RND;
1102
1103 else if (strcmp(f, "!UDPDST_RND") == 0)
1104 pkt_dev->flags &= ~F_UDPDST_RND;
1105
1106 else if (strcmp(f, "MACSRC_RND") == 0)
1107 pkt_dev->flags |= F_MACSRC_RND;
1108
1109 else if (strcmp(f, "!MACSRC_RND") == 0)
1110 pkt_dev->flags &= ~F_MACSRC_RND;
1111
1112 else if (strcmp(f, "MACDST_RND") == 0)
1113 pkt_dev->flags |= F_MACDST_RND;
1114
1115 else if (strcmp(f, "!MACDST_RND") == 0)
1116 pkt_dev->flags &= ~F_MACDST_RND;
1117
ca6549af
SW		 1118 else if (strcmp(f, "MPLS_RND") == 0)
1119 pkt_dev->flags |= F_MPLS_RND;
1120
1121 else if (strcmp(f, "!MPLS_RND") == 0)
1122 pkt_dev->flags &= ~F_MPLS_RND;
1123
34954ddc
FF		 1124 else if (strcmp(f, "VID_RND") == 0)
1125 pkt_dev->flags |= F_VID_RND;
1126
1127 else if (strcmp(f, "!VID_RND") == 0)
1128 pkt_dev->flags &= ~F_VID_RND;
1129
1130 else if (strcmp(f, "SVID_RND") == 0)
1131 pkt_dev->flags |= F_SVID_RND;
1132
1133 else if (strcmp(f, "!SVID_RND") == 0)
1134 pkt_dev->flags &= ~F_SVID_RND;
1135
007a531b
JHS		 1136 else if (strcmp(f, "FLOW_SEQ") == 0)
1137 pkt_dev->flags |= F_FLOW_SEQ;
1138
45b270f8
RO		 1139 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1140 pkt_dev->flags |= F_QUEUE_MAP_RND;
1141
1142 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1143 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1144
1145 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1146 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1147
1148 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1149 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1150#ifdef CONFIG_XFRM
1151 else if (strcmp(f, "IPSEC") == 0)
1152 pkt_dev->flags |= F_IPSEC_ON;
1153#endif
1154
1ca7768c
FF		 1155 else if (strcmp(f, "!IPV6") == 0)
1156 pkt_dev->flags &= ~F_IPV6;
1157
222f1806
LC		 1158 else {
1159 sprintf(pg_result,
1160 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1161 f,
1ca7768c 1162 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1163 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1164 return count;
1165 }
1da177e4
LT		 1166 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1167 return count;
1168 }
1169 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1170 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
222f1806
LC		 1171 if (len < 0) {
1172 return len;
1173 }
1da177e4 1174
222f1806 1175 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1176 return -EFAULT;
222f1806
LC		 1177 buf[len] = 0;
1178 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1179 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1180 strncpy(pkt_dev->dst_min, buf, len);
1181 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1182 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1183 }
1184 if (debug)
25a8b254 1185 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1186 pkt_dev->dst_min);
1187 i += len;
1da177e4
LT		 1188 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1189 return count;
1190 }
1191 if (!strcmp(name, "dst_max")) {
1192 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
222f1806
LC		 1193 if (len < 0) {
1194 return len;
1195 }
1da177e4 1196
222f1806 1197 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1198 return -EFAULT;
1199
222f1806
LC		 1200 buf[len] = 0;
1201 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1202 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1203 strncpy(pkt_dev->dst_max, buf, len);
1204 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1205 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1206 }
1207 if (debug)
25a8b254 1208 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1209 pkt_dev->dst_max);
1da177e4
LT		 1210 i += len;
1211 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1212 return count;
1213 }
1214 if (!strcmp(name, "dst6")) {
1215 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1216 if (len < 0)
1217 return len;
1da177e4
LT		 1218
1219 pkt_dev->flags |= F_IPV6;
1220
222f1806 1221 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1222 return -EFAULT;
222f1806 1223 buf[len] = 0;
1da177e4
LT		 1224
1225 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1226 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1227
1228 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1229
222f1806 1230 if (debug)
25a8b254 1231 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1232
222f1806 1233 i += len;
1da177e4
LT		 1234 sprintf(pg_result, "OK: dst6=%s", buf);
1235 return count;
1236 }
1237 if (!strcmp(name, "dst6_min")) {
1238 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1239 if (len < 0)
1240 return len;
1da177e4
LT		 1241
1242 pkt_dev->flags |= F_IPV6;
1243
222f1806 1244 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1245 return -EFAULT;
222f1806 1246 buf[len] = 0;
1da177e4
LT		 1247
1248 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1249 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1250
222f1806
LC		 1251 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1252 &pkt_dev->min_in6_daddr);
1253 if (debug)
25a8b254 1254 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1255
222f1806 1256 i += len;
1da177e4
LT		 1257 sprintf(pg_result, "OK: dst6_min=%s", buf);
1258 return count;
1259 }
1260 if (!strcmp(name, "dst6_max")) {
1261 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1262 if (len < 0)
1263 return len;
1da177e4
LT		 1264
1265 pkt_dev->flags |= F_IPV6;
1266
222f1806 1267 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1268 return -EFAULT;
222f1806 1269 buf[len] = 0;
1da177e4
LT		 1270
1271 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1272 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1273
222f1806 1274 if (debug)
25a8b254 1275 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1276
222f1806 1277 i += len;
1da177e4
LT		 1278 sprintf(pg_result, "OK: dst6_max=%s", buf);
1279 return count;
1280 }
1281 if (!strcmp(name, "src6")) {
1282 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1283 if (len < 0)
1284 return len;
1da177e4
LT		 1285
1286 pkt_dev->flags |= F_IPV6;
1287
222f1806 1288 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1289 return -EFAULT;
222f1806 1290 buf[len] = 0;
1da177e4
LT		 1291
1292 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1293 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1294
1295 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1296
222f1806 1297 if (debug)
25a8b254 1298 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1299
1300 i += len;
1da177e4
LT		 1301 sprintf(pg_result, "OK: src6=%s", buf);
1302 return count;
1303 }
1304 if (!strcmp(name, "src_min")) {
1305 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
222f1806
LC		 1306 if (len < 0) {
1307 return len;
1308 }
1309 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1310 return -EFAULT;
222f1806
LC		 1311 buf[len] = 0;
1312 if (strcmp(buf, pkt_dev->src_min) != 0) {
1313 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1314 strncpy(pkt_dev->src_min, buf, len);
1315 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1316 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1317 }
1318 if (debug)
25a8b254 1319 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1320 pkt_dev->src_min);
1da177e4
LT		 1321 i += len;
1322 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1323 return count;
1324 }
1325 if (!strcmp(name, "src_max")) {
1326 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
222f1806
LC		 1327 if (len < 0) {
1328 return len;
1329 }
1330 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1331 return -EFAULT;
222f1806
LC		 1332 buf[len] = 0;
1333 if (strcmp(buf, pkt_dev->src_max) != 0) {
1334 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1335 strncpy(pkt_dev->src_max, buf, len);
1336 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1337 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1338 }
1339 if (debug)
25a8b254 1340 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1341 pkt_dev->src_max);
1da177e4
LT		 1342 i += len;
1343 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1344 return count;
1345 }
1346 if (!strcmp(name, "dst_mac")) {
1347 char *v = valstr;
f404e9a6 1348 unsigned char old_dmac[ETH_ALEN];
1da177e4 1349 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1350 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1351
1da177e4 1352 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1353 if (len < 0) {
1354 return len;
1355 }
1da177e4 1356 memset(valstr, 0, sizeof(valstr));
222f1806 1357 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1358 return -EFAULT;
1359 i += len;
1360
222f1806 1361 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1362 if (*v >= '0' && *v <= '9') {
1363 *m *= 16;
1364 *m += *v - '0';
1365 }
1366 if (*v >= 'A' && *v <= 'F') {
1367 *m *= 16;
1368 *m += *v - 'A' + 10;
1369 }
1370 if (*v >= 'a' && *v <= 'f') {
1371 *m *= 16;
1372 *m += *v - 'a' + 10;
1373 }
1374 if (*v == ':') {
1375 m++;
1376 *m = 0;
1377 }
1378 }
1379
1380 /* Set up Dest MAC */
f404e9a6
KK		 1381 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1382 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1383
1da177e4
LT		 1384 sprintf(pg_result, "OK: dstmac");
1385 return count;
1386 }
1387 if (!strcmp(name, "src_mac")) {
1388 char *v = valstr;
ce5d0b47 1389 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1390 unsigned char *m = pkt_dev->src_mac;
1391
ce5d0b47
AR		 1392 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1393
1da177e4 1394 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1395 if (len < 0) {
1396 return len;
1397 }
1da177e4 1398 memset(valstr, 0, sizeof(valstr));
222f1806 1399 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1400 return -EFAULT;
1401 i += len;
1402
222f1806 1403 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1404 if (*v >= '0' && *v <= '9') {
1405 *m *= 16;
1406 *m += *v - '0';
1407 }
1408 if (*v >= 'A' && *v <= 'F') {
1409 *m *= 16;
1410 *m += *v - 'A' + 10;
1411 }
1412 if (*v >= 'a' && *v <= 'f') {
1413 *m *= 16;
1414 *m += *v - 'a' + 10;
1415 }
1416 if (*v == ':') {
1417 m++;
1418 *m = 0;
1419 }
222f1806 1420 }
1da177e4 1421
ce5d0b47
AR		 1422 /* Set up Src MAC */
1423 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1424 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1425
222f1806 1426 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1427 return count;
1428 }
1429
222f1806
LC		 1430 if (!strcmp(name, "clear_counters")) {
1431 pktgen_clear_counters(pkt_dev);
1432 sprintf(pg_result, "OK: Clearing counters.\n");
1433 return count;
1434 }
1da177e4
LT		 1435
1436 if (!strcmp(name, "flows")) {
1437 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1438 if (len < 0) {
1439 return len;
1440 }
1da177e4
LT		 1441 i += len;
1442 if (value > MAX_CFLOWS)
1443 value = MAX_CFLOWS;
1444
1445 pkt_dev->cflows = value;
1446 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1447 return count;
1448 }
1449
1450 if (!strcmp(name, "flowlen")) {
1451 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1452 if (len < 0) {
1453 return len;
1454 }
1da177e4
LT		 1455 i += len;
1456 pkt_dev->lflow = value;
1457 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1458 return count;
1459 }
222f1806 1460
45b270f8
RO		 1461 if (!strcmp(name, "queue_map_min")) {
1462 len = num_arg(&user_buffer[i], 5, &value);
1463 if (len < 0) {
1464 return len;
1465 }
1466 i += len;
1467 pkt_dev->queue_map_min = value;
1468 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1469 return count;
1470 }
1471
1472 if (!strcmp(name, "queue_map_max")) {
1473 len = num_arg(&user_buffer[i], 5, &value);
1474 if (len < 0) {
1475 return len;
1476 }
1477 i += len;
1478 pkt_dev->queue_map_max = value;
1479 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1480 return count;
1481 }
1482
ca6549af 1483 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1484 unsigned n, cnt;
1485
ca6549af 1486 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1487 if (len < 0)
1488 return len;
ca6549af 1489 i += len;
cfcabdcc 1490 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1491 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1492 cnt += sprintf(pg_result + cnt,
1493 "%08x%s", ntohl(pkt_dev->labels[n]),
1494 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1495
1496 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1497 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1498 pkt_dev->svlan_id = 0xffff;
1499
1500 if (debug)
25a8b254 1501 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1502 }
1503 return count;
1504 }
1505
1506 if (!strcmp(name, "vlan_id")) {
1507 len = num_arg(&user_buffer[i], 4, &value);
1508 if (len < 0) {
1509 return len;
1510 }
1511 i += len;
1512 if (value <= 4095) {
1513 pkt_dev->vlan_id = value; /* turn on VLAN */
1514
1515 if (debug)
25a8b254 1516 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1517
1518 if (debug && pkt_dev->nr_labels)
25a8b254 1519 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1520
1521 pkt_dev->nr_labels = 0; /* turn off MPLS */
1522 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1523 } else {
1524 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1525 pkt_dev->svlan_id = 0xffff;
1526
1527 if (debug)
25a8b254 1528 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1529 }
1530 return count;
1531 }
1532
1533 if (!strcmp(name, "vlan_p")) {
1534 len = num_arg(&user_buffer[i], 1, &value);
1535 if (len < 0) {
1536 return len;
1537 }
1538 i += len;
1539 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1540 pkt_dev->vlan_p = value;
1541 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1542 } else {
1543 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1544 }
1545 return count;
1546 }
1547
1548 if (!strcmp(name, "vlan_cfi")) {
1549 len = num_arg(&user_buffer[i], 1, &value);
1550 if (len < 0) {
1551 return len;
1552 }
1553 i += len;
1554 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1555 pkt_dev->vlan_cfi = value;
1556 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1557 } else {
1558 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1559 }
1560 return count;
1561 }
1562
1563 if (!strcmp(name, "svlan_id")) {
1564 len = num_arg(&user_buffer[i], 4, &value);
1565 if (len < 0) {
1566 return len;
1567 }
1568 i += len;
1569 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1570 pkt_dev->svlan_id = value; /* turn on SVLAN */
1571
1572 if (debug)
25a8b254 1573 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1574
1575 if (debug && pkt_dev->nr_labels)
25a8b254 1576 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1577
1578 pkt_dev->nr_labels = 0; /* turn off MPLS */
1579 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1580 } else {
1581 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1582 pkt_dev->svlan_id = 0xffff;
1583
1584 if (debug)
25a8b254 1585 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1586 }
1587 return count;
1588 }
1589
1590 if (!strcmp(name, "svlan_p")) {
1591 len = num_arg(&user_buffer[i], 1, &value);
1592 if (len < 0) {
1593 return len;
1594 }
1595 i += len;
1596 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1597 pkt_dev->svlan_p = value;
1598 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1599 } else {
1600 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1601 }
1602 return count;
1603 }
1604
1605 if (!strcmp(name, "svlan_cfi")) {
1606 len = num_arg(&user_buffer[i], 1, &value);
1607 if (len < 0) {
1608 return len;
1609 }
1610 i += len;
1611 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1612 pkt_dev->svlan_cfi = value;
1613 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1614 } else {
1615 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1616 }
ca6549af
SW		 1617 return count;
1618 }
1619
1ca7768c
FF		 1620 if (!strcmp(name, "tos")) {
1621 __u32 tmp_value = 0;
1622 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1623 if (len < 0) {
1624 return len;
1625 }
1626 i += len;
1627 if (len == 2) {
1628 pkt_dev->tos = tmp_value;
1629 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1630 } else {
1631 sprintf(pg_result, "ERROR: tos must be 00-ff");
1632 }
1633 return count;
1634 }
1635
1636 if (!strcmp(name, "traffic_class")) {
1637 __u32 tmp_value = 0;
1638 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1639 if (len < 0) {
1640 return len;
1641 }
1642 i += len;
1643 if (len == 2) {
1644 pkt_dev->traffic_class = tmp_value;
1645 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1646 } else {
1647 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1648 }
1649 return count;
1650 }
1651
1da177e4
LT		 1652 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1653 return -EINVAL;
1654}
1655
d50a6b56 1656static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1657{
d50a6b56
SH		 1658 return single_open(file, pktgen_if_show, PDE(inode)->data);
1659}
1da177e4 1660
9a32144e 1661static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1662 .owner = THIS_MODULE,
1663 .open = pktgen_if_open,
1664 .read = seq_read,
1665 .llseek = seq_lseek,
1666 .write = pktgen_if_write,
1667 .release = single_release,
d50a6b56 1668};
1da177e4 1669
d50a6b56
SH		 1670static int pktgen_thread_show(struct seq_file *seq, void *v)
1671{
222f1806 1672 struct pktgen_thread *t = seq->private;
648fda74 1673 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1674
1675 BUG_ON(!t);
1da177e4 1676
222f1806 1677 seq_printf(seq, "Running: ");
1da177e4 1678
222f1806 1679 if_lock(t);
c26a8016 1680 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1681 if (pkt_dev->running)
39df232f 1682 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1683
222f1806
LC		 1684 seq_printf(seq, "\nStopped: ");
1685
c26a8016 1686 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1687 if (!pkt_dev->running)
39df232f 1688 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1689
1690 if (t->result[0])
d50a6b56 1691 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1692 else
d50a6b56 1693 seq_printf(seq, "\nResult: NA\n");
1da177e4 1694
222f1806 1695 if_unlock(t);
1da177e4 1696
d50a6b56 1697 return 0;
1da177e4
LT		 1698}
1699
d50a6b56 1700static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1701 const char __user * user_buffer,
1702 size_t count, loff_t * offset)
1da177e4 1703{
222f1806
LC		 1704 struct seq_file *seq = (struct seq_file *)file->private_data;
1705 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1706 int i = 0, max, len, ret;
1707 char name[40];
222f1806 1708 char *pg_result;
d50a6b56 1709
1da177e4 1710 if (count < 1) {
222f1806 1711 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1712 return -EINVAL;
1713 }
d50a6b56 1714
1da177e4 1715 max = count - i;
222f1806
LC		 1716 len = count_trail_chars(&user_buffer[i], max);
1717 if (len < 0)
d50a6b56
SH		 1718 return len;
1719
1da177e4 1720 i += len;
d50a6b56 1721
1da177e4
LT		 1722 /* Read variable name */
1723
1724 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1725 if (len < 0)
d50a6b56 1726 return len;
222f1806 1727
1da177e4
LT		 1728 memset(name, 0, sizeof(name));
1729 if (copy_from_user(name, &user_buffer[i], len))
1730 return -EFAULT;
1731 i += len;
d50a6b56 1732
222f1806 1733 max = count - i;
1da177e4 1734 len = count_trail_chars(&user_buffer[i], max);
222f1806 1735 if (len < 0)
d50a6b56
SH		 1736 return len;
1737
1da177e4
LT		 1738 i += len;
1739
d50a6b56 1740 if (debug)
25a8b254
DM		 1741 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1742 name, (unsigned long)count);
1da177e4 1743
222f1806 1744 if (!t) {
25a8b254 1745 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1746 ret = -EINVAL;
1747 goto out;
1748 }
1749
1750 pg_result = &(t->result[0]);
1751
222f1806
LC		 1752 if (!strcmp(name, "add_device")) {
1753 char f[32];
1754 memset(f, 0, 32);
1da177e4 1755 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1756 if (len < 0) {
1757 ret = len;
1da177e4
LT		 1758 goto out;
1759 }
222f1806 1760 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1761 return -EFAULT;
1762 i += len;
6146e6a4 1763 mutex_lock(&pktgen_thread_lock);
222f1806 1764 pktgen_add_device(t, f);
6146e6a4 1765 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1766 ret = count;
1767 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1768 goto out;
1769 }
1770
222f1806 1771 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1772 mutex_lock(&pktgen_thread_lock);
95ed63f7 1773 t->control |= T_REMDEVALL;
6146e6a4 1774 mutex_unlock(&pktgen_thread_lock);
222f1806 1775 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1776 ret = count;
222f1806 1777 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1778 goto out;
1779 }
1780
222f1806 1781 if (!strcmp(name, "max_before_softirq")) {
b163911f 1782 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1783 ret = count;
1da177e4
LT		 1784 goto out;
1785 }
1786
1787 ret = -EINVAL;
222f1806 1788out:
1da177e4
LT		 1789 return ret;
1790}
1791
d50a6b56 1792static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1793{
d50a6b56 1794 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1795}
1796
9a32144e 1797static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1798 .owner = THIS_MODULE,
1799 .open = pktgen_thread_open,
1800 .read = seq_read,
1801 .llseek = seq_lseek,
1802 .write = pktgen_thread_write,
1803 .release = single_release,
d50a6b56 1804};
1da177e4
LT		 1805
1806/* Think find or remove for NN */
222f1806 1807static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1808{
1809 struct pktgen_thread *t;
1810 struct pktgen_dev *pkt_dev = NULL;
1811
cdcdbe0b 1812 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1813 pkt_dev = pktgen_find_dev(t, ifname);
1814 if (pkt_dev) {
222f1806
LC		 1815 if (remove) {
1816 if_lock(t);
1817 pkt_dev->removal_mark = 1;
1818 t->control |= T_REMDEV;
1819 if_unlock(t);
1820 }
1da177e4
LT		 1821 break;
1822 }
1da177e4 1823 }
222f1806 1824 return pkt_dev;
1da177e4
LT		 1825}
1826
95ed63f7
AK		 1827/*
1828 * mark a device for removal
1829 */
39df232f 1830static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1831{
1832 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1833 const int max_tries = 10, msec_per_try = 125;
1834 int i = 0;
95ed63f7 1835
6146e6a4 1836 mutex_lock(&pktgen_thread_lock);
25c4e53a 1837 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1838
222f1806 1839 while (1) {
95ed63f7
AK		 1840
1841 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1842 if (pkt_dev == NULL)
1843 break; /* success */
95ed63f7 1844
6146e6a4 1845 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1846 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1847 "to disappear....\n", ifname);
95ed63f7 1848 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1849 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1850
1851 if (++i >= max_tries) {
25a8b254
DM		 1852 printk(KERN_ERR "pktgen_mark_device: timed out after "
1853 "waiting %d msec for device %s to be removed\n",
222f1806 1854 msec_per_try * i, ifname);
95ed63f7
AK		 1855 break;
1856 }
1857
1858 }
1859
6146e6a4 1860 mutex_unlock(&pktgen_thread_lock);
39df232f 1861}
95ed63f7 1862
39df232f
SH		 1863static void pktgen_change_name(struct net_device *dev)
1864{
1865 struct pktgen_thread *t;
1866
1867 list_for_each_entry(t, &pktgen_threads, th_list) {
1868 struct pktgen_dev *pkt_dev;
1869
1870 list_for_each_entry(pkt_dev, &t->if_list, list) {
1871 if (pkt_dev->odev != dev)
1872 continue;
1873
1874 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1875
1876 pkt_dev->entry = create_proc_entry(dev->name, 0600,
1877 pg_proc_dir);
1878 if (!pkt_dev->entry)
1879 printk(KERN_ERR "pktgen: can't move proc "
1880 " entry for '%s'\n", dev->name);
1881 break;
1882 }
1883 }
1da177e4
LT		 1884}
1885
222f1806
LC		 1886static int pktgen_device_event(struct notifier_block *unused,
1887 unsigned long event, void *ptr)
1da177e4 1888{
39df232f 1889 struct net_device *dev = ptr;
1da177e4 1890
721499e8 1891 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1892 return NOTIFY_DONE;
1893
1da177e4
LT		 1894 /* It is OK that we do not hold the group lock right now,
1895 * as we run under the RTNL lock.
1896 */
1897
1898 switch (event) {
39df232f
SH		 1899 case NETDEV_CHANGENAME:
1900 pktgen_change_name(dev);
1da177e4 1901 break;
222f1806 1902
1da177e4 1903 case NETDEV_UNREGISTER:
222f1806 1904 pktgen_mark_device(dev->name);
1da177e4 1905 break;
3ff50b79 1906 }
1da177e4
LT		 1907
1908 return NOTIFY_DONE;
1909}
1910
e6fce5b9
RO		 1911static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname)
1912{
1913 char b[IFNAMSIZ+5];
1914 int i = 0;
1915
1916 for(i=0; ifname[i] != '@'; i++) {
1917 if(i == IFNAMSIZ)
1918 break;
1919
1920 b[i] = ifname[i];
1921 }
1922 b[i] = 0;
1923
1924 return dev_get_by_name(&init_net, b);
1925}
1926
1927
1da177e4
LT		 1928/* Associate pktgen_dev with a device. */
1929
39df232f 1930static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1931{
1da177e4 1932 struct net_device *odev;
39df232f 1933 int err;
1da177e4
LT		 1934
1935 /* Clean old setups */
1da177e4
LT		 1936 if (pkt_dev->odev) {
1937 dev_put(pkt_dev->odev);
222f1806
LC		 1938 pkt_dev->odev = NULL;
1939 }
1da177e4 1940
e6fce5b9 1941 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1942 if (!odev) {
25a8b254 1943 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1944 return -ENODEV;
1da177e4 1945 }
39df232f 1946
1da177e4 1947 if (odev->type != ARPHRD_ETHER) {
25a8b254 1948 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1949 err = -EINVAL;
1950 } else if (!netif_running(odev)) {
25a8b254 1951 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1952 err = -ENETDOWN;
1953 } else {
1954 pkt_dev->odev = odev;
1955 return 0;
1da177e4 1956 }
1da177e4 1957
1da177e4 1958 dev_put(odev);
39df232f 1959 return err;
1da177e4
LT		 1960}
1961
1962/* Read pkt_dev from the interface and set up internal pktgen_dev
1963 * structure to have the right information to create/send packets
1964 */
1965static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
1966{
64c00d81
AG		 1967 int ntxq;
1968
222f1806 1969 if (!pkt_dev->odev) {
25a8b254
DM		 1970 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
1971 "setup_inject.\n");
222f1806
LC		 1972 sprintf(pkt_dev->result,
1973 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1974 return;
1975 }
1976
64c00d81
AG		 1977 /* make sure that we don't pick a non-existing transmit queue */
1978 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 1979
64c00d81
AG		 1980 if (ntxq <= pkt_dev->queue_map_min) {
1981 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1982 "queue_map_min (zero-based) (%d) exceeds valid range "
1983 "[0 - %d] for (%d) queues on %s, resetting\n",
1984 pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
1985 pkt_dev->odev->name);
64c00d81
AG		 1986 pkt_dev->queue_map_min = ntxq - 1;
1987 }
88271660 1988 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 1989 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1990 "queue_map_max (zero-based) (%d) exceeds valid range "
1991 "[0 - %d] for (%d) queues on %s, resetting\n",
1992 pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
1993 pkt_dev->odev->name);
64c00d81
AG		 1994 pkt_dev->queue_map_max = ntxq - 1;
1995 }
1996
222f1806 1997 /* Default to the interface's mac if not explicitly set. */
1da177e4 1998
f404e9a6 1999 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2000 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2001
222f1806 2002 /* Set up Dest MAC */
f404e9a6 2003 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2004
222f1806
LC		 2005 /* Set up pkt size */
2006 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2007
2008 if (pkt_dev->flags & F_IPV6) {
1da177e4 2009 /*
4ec93edb 2010 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2011 * gets exported
2012 */
2013
2014#ifdef NOTNOW
222f1806 2015 int i, set = 0, err = 1;
1da177e4
LT		 2016 struct inet6_dev *idev;
2017
222f1806
LC		 2018 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2019 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2020 set = 1;
2021 break;
2022 }
2023
222f1806
LC		 2024 if (!set) {
2025
1da177e4
LT		 2026 /*
2027 * Use linklevel address if unconfigured.
2028 *
2029 * use ipv6_get_lladdr if/when it's get exported
2030 */
2031
8814c4b5 2032 rcu_read_lock();
1da177e4
LT		 2033 if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
2034 struct inet6_ifaddr *ifp;
2035
2036 read_lock_bh(&idev->lock);
222f1806
LC		 2037 for (ifp = idev->addr_list; ifp;
2038 ifp = ifp->if_next) {
2039 if (ifp->scope == IFA_LINK
2040 && !(ifp->
2041 flags & IFA_F_TENTATIVE)) {
2042 ipv6_addr_copy(&pkt_dev->
2043 cur_in6_saddr,
2044 &ifp->addr);
1da177e4
LT		 2045 err = 0;
2046 break;
2047 }
2048 }
2049 read_unlock_bh(&idev->lock);
2050 }
8814c4b5 2051 rcu_read_unlock();
222f1806 2052 if (err)
25a8b254
DM		 2053 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2054 "address not availble.\n");
1da177e4
LT		 2055 }
2056#endif
222f1806 2057 } else {
1da177e4
LT		 2058 pkt_dev->saddr_min = 0;
2059 pkt_dev->saddr_max = 0;
2060 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2061
2062 struct in_device *in_dev;
1da177e4
LT		 2063
2064 rcu_read_lock();
e5ed6399 2065 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2066 if (in_dev) {
2067 if (in_dev->ifa_list) {
222f1806
LC		 2068 pkt_dev->saddr_min =
2069 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2070 pkt_dev->saddr_max = pkt_dev->saddr_min;
2071 }
1da177e4
LT		 2072 }
2073 rcu_read_unlock();
222f1806 2074 } else {
1da177e4
LT		 2075 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2076 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2077 }
2078
2079 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2080 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2081 }
222f1806
LC		 2082 /* Initialize current values. */
2083 pkt_dev->cur_dst_mac_offset = 0;
2084 pkt_dev->cur_src_mac_offset = 0;
2085 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2086 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2087 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2088 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2089 pkt_dev->nflows = 0;
2090}
2091
2092static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us)
2093{
2094 __u64 start;
2095 __u64 now;
2096
2097 start = now = getCurUs();
1da177e4 2098 while (now < spin_until_us) {
b4099fab 2099 /* TODO: optimize sleeping behavior */
222f1806 2100 if (spin_until_us - now > jiffies_to_usecs(1) + 1)
121caf57
NA		 2101 schedule_timeout_interruptible(1);
2102 else if (spin_until_us - now > 100) {
1da177e4
LT		 2103 if (!pkt_dev->running)
2104 return;
2105 if (need_resched())
2106 schedule();
2107 }
2108
2109 now = getCurUs();
2110 }
2111
2112 pkt_dev->idle_acc += now - start;
2113}
2114
16dab72f
JHS		 2115static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2116{
a553e4a6 2117 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2118 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2119 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2120 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2121}
2122
648fda74 2123static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2124{
648fda74 2125 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2126}
2127
2128static inline int f_pick(struct pktgen_dev *pkt_dev)
2129{
2130 int flow = pkt_dev->curfl;
2131
2132 if (pkt_dev->flags & F_FLOW_SEQ) {
2133 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2134 /* reset time */
2135 pkt_dev->flows[flow].count = 0;
1211a645 2136 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2137 pkt_dev->curfl += 1;
2138 if (pkt_dev->curfl >= pkt_dev->cflows)
2139 pkt_dev->curfl = 0; /*reset */
2140 }
2141 } else {
2142 flow = random32() % pkt_dev->cflows;
1211a645 2143 pkt_dev->curfl = flow;
007a531b 2144
1211a645 2145 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2146 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2147 pkt_dev->flows[flow].flags = 0;
2148 }
007a531b
JHS		 2149 }
2150
2151 return pkt_dev->curfl;
2152}
2153
a553e4a6
JHS		 2154
2155#ifdef CONFIG_XFRM
2156/* If there was already an IPSEC SA, we keep it as is, else
2157 * we go look for it ...
2158*/
fea1ab0f 2159static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2160{
2161 struct xfrm_state *x = pkt_dev->flows[flow].x;
2162 if (!x) {
2163 /*slow path: we dont already have xfrm_state*/
5447c5e4
AD		 2164 x = xfrm_stateonly_find(&init_net,
2165 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2166 (xfrm_address_t *)&pkt_dev->cur_saddr,
2167 AF_INET,
2168 pkt_dev->ipsmode,
2169 pkt_dev->ipsproto, 0);
2170 if (x) {
2171 pkt_dev->flows[flow].x = x;
2172 set_pkt_overhead(pkt_dev);
2173 pkt_dev->pkt_overhead+=x->props.header_len;
2174 }
2175
2176 }
2177}
2178#endif
fd2ea0a7
DM		 2179static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2180{
e6fce5b9
RO		 2181
2182 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2183 pkt_dev->cur_queue_map = smp_processor_id();
2184
2185 else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2186 __u16 t;
2187 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2188 t = random32() %
2189 (pkt_dev->queue_map_max -
2190 pkt_dev->queue_map_min + 1)
2191 + pkt_dev->queue_map_min;
2192 } else {
2193 t = pkt_dev->cur_queue_map + 1;
2194 if (t > pkt_dev->queue_map_max)
2195 t = pkt_dev->queue_map_min;
2196 }
2197 pkt_dev->cur_queue_map = t;
2198 }
bfdbc0ac 2199 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2200}
2201
1da177e4
LT		 2202/* Increment/randomize headers according to flags and current values
2203 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2204 */
222f1806
LC		 2205static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2206{
2207 __u32 imn;
2208 __u32 imx;
2209 int flow = 0;
1da177e4 2210
007a531b
JHS		 2211 if (pkt_dev->cflows)
2212 flow = f_pick(pkt_dev);
1da177e4
LT		 2213
2214 /* Deal with source MAC */
222f1806
LC		 2215 if (pkt_dev->src_mac_count > 1) {
2216 __u32 mc;
2217 __u32 tmp;
2218
2219 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2220 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2221 else {
2222 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2223 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2224 pkt_dev->src_mac_count)
2225 pkt_dev->cur_src_mac_offset = 0;
2226 }
2227
2228 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2229 pkt_dev->hh[11] = tmp;
2230 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2231 pkt_dev->hh[10] = tmp;
2232 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2233 pkt_dev->hh[9] = tmp;
2234 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2235 pkt_dev->hh[8] = tmp;
2236 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2237 pkt_dev->hh[7] = tmp;
2238 }
2239
2240 /* Deal with Destination MAC */
2241 if (pkt_dev->dst_mac_count > 1) {
2242 __u32 mc;
2243 __u32 tmp;
2244
2245 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2246 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2247
2248 else {
2249 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2250 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2251 pkt_dev->dst_mac_count) {
2252 pkt_dev->cur_dst_mac_offset = 0;
2253 }
2254 }
2255
2256 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2257 pkt_dev->hh[5] = tmp;
2258 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2259 pkt_dev->hh[4] = tmp;
2260 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2261 pkt_dev->hh[3] = tmp;
2262 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2263 pkt_dev->hh[2] = tmp;
2264 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2265 pkt_dev->hh[1] = tmp;
2266 }
2267
ca6549af
SW		 2268 if (pkt_dev->flags & F_MPLS_RND) {
2269 unsigned i;
e71a4783 2270 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2271 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2272 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2273 ((__force __be32)random32() &
ca6549af
SW		 2274 htonl(0x000fffff));
2275 }
2276
34954ddc 2277 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2278 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2279 }
2280
2281 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2282 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2283 }
2284
222f1806
LC		 2285 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2286 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2287 pkt_dev->cur_udp_src = random32() %
2288 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2289 + pkt_dev->udp_src_min;
222f1806
LC		 2290
2291 else {
1da177e4
LT		 2292 pkt_dev->cur_udp_src++;
2293 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2294 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2295 }
2296 }
2297
2298 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2299 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2300 pkt_dev->cur_udp_dst = random32() %
2301 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2302 + pkt_dev->udp_dst_min;
222f1806 2303 } else {
1da177e4 2304 pkt_dev->cur_udp_dst++;
222f1806 2305 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2306 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2307 }
2308 }
1da177e4
LT		 2309
2310 if (!(pkt_dev->flags & F_IPV6)) {
2311
222f1806
LC		 2312 if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
2313 ntohl(pkt_dev->
2314 saddr_max))) {
1da177e4 2315 __u32 t;
222f1806 2316 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2317 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2318 else {
2319 t = ntohl(pkt_dev->cur_saddr);
2320 t++;
2321 if (t > imx) {
2322 t = imn;
2323 }
2324 }
2325 pkt_dev->cur_saddr = htonl(t);
2326 }
222f1806 2327
007a531b 2328 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2329 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2330 } else {
252e3346
AV		 2331 imn = ntohl(pkt_dev->daddr_min);
2332 imx = ntohl(pkt_dev->daddr_max);
2333 if (imn < imx) {
1da177e4 2334 __u32 t;
252e3346 2335 __be32 s;
1da177e4
LT		 2336 if (pkt_dev->flags & F_IPDST_RND) {
2337
5fa6fc76 2338 t = random32() % (imx - imn) + imn;
252e3346 2339 s = htonl(t);
1da177e4 2340
21cf2253
JP		 2341 while (ipv4_is_loopback(s) ||
2342 ipv4_is_multicast(s) ||
1e637c74 2343 ipv4_is_lbcast(s) ||
21cf2253
JP		 2344 ipv4_is_zeronet(s) ||
2345 ipv4_is_local_multicast(s)) {
5fa6fc76 2346 t = random32() % (imx - imn) + imn;
252e3346 2347 s = htonl(t);
1da177e4 2348 }
252e3346
AV		 2349 pkt_dev->cur_daddr = s;
2350 } else {
1da177e4
LT		 2351 t = ntohl(pkt_dev->cur_daddr);
2352 t++;
2353 if (t > imx) {
2354 t = imn;
2355 }
2356 pkt_dev->cur_daddr = htonl(t);
2357 }
2358 }
222f1806 2359 if (pkt_dev->cflows) {
007a531b 2360 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2361 pkt_dev->flows[flow].cur_daddr =
2362 pkt_dev->cur_daddr;
a553e4a6
JHS		 2363#ifdef CONFIG_XFRM
2364 if (pkt_dev->flags & F_IPSEC_ON)
2365 get_ipsec_sa(pkt_dev, flow);
2366#endif
1da177e4
LT		 2367 pkt_dev->nflows++;
2368 }
2369 }
222f1806
LC		 2370 } else { /* IPV6 * */
2371
2372 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2373 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2374 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2375 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2376 else {
2377 int i;
2378
2379 /* Only random destinations yet */
2380
222f1806 2381 for (i = 0; i < 4; i++) {
1da177e4 2382 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2383 (((__force __be32)random32() |
222f1806
LC		 2384 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2385 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2386 }
222f1806 2387 }
1da177e4
LT		 2388 }
2389
222f1806
LC		 2390 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2391 __u32 t;
2392 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2393 t = random32() %
2394 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2395 + pkt_dev->min_pkt_size;
222f1806 2396 } else {
1da177e4 2397 t = pkt_dev->cur_pkt_size + 1;
222f1806 2398 if (t > pkt_dev->max_pkt_size)
1da177e4 2399 t = pkt_dev->min_pkt_size;
222f1806
LC		 2400 }
2401 pkt_dev->cur_pkt_size = t;
2402 }
1da177e4 2403
fd2ea0a7 2404 set_cur_queue_map(pkt_dev);
45b270f8 2405
1da177e4
LT		 2406 pkt_dev->flows[flow].count++;
2407}
2408
a553e4a6
JHS		 2409
2410#ifdef CONFIG_XFRM
2411static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2412{
2413 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2414 int err = 0;
2415 struct iphdr *iph;
2416
2417 if (!x)
2418 return 0;
2419 /* XXX: we dont support tunnel mode for now until
2420 * we resolve the dst issue */
2421 if (x->props.mode != XFRM_MODE_TRANSPORT)
2422 return 0;
2423
2424 spin_lock(&x->lock);
2425 iph = ip_hdr(skb);
2426
13996378 2427 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2428 if (err)
2429 goto error;
2430 err = x->type->output(x, skb);
2431 if (err)
2432 goto error;
2433
2434 x->curlft.bytes +=skb->len;
2435 x->curlft.packets++;
a553e4a6
JHS		 2436error:
2437 spin_unlock(&x->lock);
2438 return err;
2439}
2440
475ac1e4 2441static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2442{
2443 if (pkt_dev->cflows) {
2444 /* let go of the SAs if we have them */
2445 int i = 0;
5b5f792a 2446 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2447 struct xfrm_state *x = pkt_dev->flows[i].x;
2448 if (x) {
2449 xfrm_state_put(x);
2450 pkt_dev->flows[i].x = NULL;
2451 }
2452 }
2453 }
2454}
2455
475ac1e4 2456static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2457 struct sk_buff *skb, __be16 protocol)
2458{
2459 if (pkt_dev->flags & F_IPSEC_ON) {
2460 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2461 int nhead = 0;
2462 if (x) {
2463 int ret;
2464 __u8 *eth;
2465 nhead = x->props.header_len - skb_headroom(skb);
2466 if (nhead >0) {
2467 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2468 if (ret < 0) {
25a8b254
DM		 2469 printk(KERN_ERR "Error expanding "
2470 "ipsec packet %d\n",ret);
b4bb4ac8 2471 goto err;
a553e4a6
JHS		 2472 }
2473 }
2474
2475 /* ipsec is not expecting ll header */
2476 skb_pull(skb, ETH_HLEN);
2477 ret = pktgen_output_ipsec(skb, pkt_dev);
2478 if (ret) {
25a8b254
DM		 2479 printk(KERN_ERR "Error creating ipsec "
2480 "packet %d\n",ret);
b4bb4ac8 2481 goto err;
a553e4a6
JHS		 2482 }
2483 /* restore ll */
2484 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2485 memcpy(eth, pkt_dev->hh, 12);
2486 *(u16 *) & eth[12] = protocol;
2487 }
2488 }
2489 return 1;
b4bb4ac8
IJ		 2490err:
2491 kfree_skb(skb);
2492 return 0;
a553e4a6
JHS		 2493}
2494#endif
2495
ca6549af
SW		 2496static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2497{
2498 unsigned i;
e71a4783 2499 for (i = 0; i < pkt_dev->nr_labels; i++) {
ca6549af
SW		 2500 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2501 }
2502 mpls--;
2503 *mpls |= MPLS_STACK_BOTTOM;
2504}
2505
0f37c605
AV		 2506static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2507 unsigned int prio)
2508{
2509 return htons(id | (cfi << 12) | (prio << 13));
2510}
2511
222f1806
LC		 2512static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2513 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2514{
2515 struct sk_buff *skb = NULL;
2516 __u8 *eth;
2517 struct udphdr *udph;
2518 int datalen, iplen;
2519 struct iphdr *iph;
222f1806 2520 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2521 __be16 protocol = htons(ETH_P_IP);
ca6549af 2522 __be32 *mpls;
34954ddc
FF		 2523 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2524 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2525 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2526 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2527 u16 queue_map;
ca6549af
SW		 2528
2529 if (pkt_dev->nr_labels)
d5f1ce9a 2530 protocol = htons(ETH_P_MPLS_UC);
222f1806 2531
34954ddc 2532 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2533 protocol = htons(ETH_P_8021Q);
34954ddc 2534
64053bee
RO		 2535 /* Update any of the values, used when we're incrementing various
2536 * fields.
2537 */
fd2ea0a7 2538 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2539 mod_cur_headers(pkt_dev);
2540
7ac5459e 2541 datalen = (odev->hard_header_len + 16) & ~0xf;
ca6549af 2542 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
16dab72f 2543 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2544 if (!skb) {
2545 sprintf(pkt_dev->result, "No memory");
2546 return NULL;
2547 }
2548
7ac5459e 2549 skb_reserve(skb, datalen);
1da177e4
LT		 2550
2551 /* Reserve for ethernet and IP header */
2552 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2553 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2554 if (pkt_dev->nr_labels)
2555 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2556
2557 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2558 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2559 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2560 *svlan_tci = build_tci(pkt_dev->svlan_id,
2561 pkt_dev->svlan_cfi,
2562 pkt_dev->svlan_p);
34954ddc 2563 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2564 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2565 }
2566 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2567 *vlan_tci = build_tci(pkt_dev->vlan_id,
2568 pkt_dev->vlan_cfi,
2569 pkt_dev->vlan_p);
34954ddc 2570 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2571 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2572 }
2573
27a884dc 2574 skb->network_header = skb->tail;
b0e380b1 2575 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2576 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2577 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2578 iph = ip_hdr(skb);
2579 udph = udp_hdr(skb);
1da177e4 2580
1da177e4 2581 memcpy(eth, pkt_dev->hh, 12);
252e3346 2582 *(__be16 *) & eth[12] = protocol;
1da177e4 2583
ca6549af
SW		 2584 /* Eth + IPh + UDPh + mpls */
2585 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2586 pkt_dev->pkt_overhead;
222f1806 2587 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2588 datalen = sizeof(struct pktgen_hdr);
222f1806 2589
1da177e4
LT		 2590 udph->source = htons(pkt_dev->cur_udp_src);
2591 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2592 udph->len = htons(datalen + 8); /* DATA + udphdr */
2593 udph->check = 0; /* No checksum */
1da177e4
LT		 2594
2595 iph->ihl = 5;
2596 iph->version = 4;
2597 iph->ttl = 32;
1ca7768c 2598 iph->tos = pkt_dev->tos;
222f1806 2599 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2600 iph->saddr = pkt_dev->cur_saddr;
2601 iph->daddr = pkt_dev->cur_daddr;
2602 iph->frag_off = 0;
2603 iplen = 20 + 8 + datalen;
2604 iph->tot_len = htons(iplen);
2605 iph->check = 0;
222f1806 2606 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2607 skb->protocol = protocol;
b0e380b1 2608 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2609 pkt_dev->pkt_overhead);
1da177e4
LT		 2610 skb->dev = odev;
2611 skb->pkt_type = PACKET_HOST;
2612
222f1806
LC		 2613 if (pkt_dev->nfrags <= 0)
2614 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2615 else {
2616 int frags = pkt_dev->nfrags;
2617 int i;
2618
222f1806
LC		 2619 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2620
1da177e4
LT		 2621 if (frags > MAX_SKB_FRAGS)
2622 frags = MAX_SKB_FRAGS;
222f1806
LC		 2623 if (datalen > frags * PAGE_SIZE) {
2624 skb_put(skb, datalen - frags * PAGE_SIZE);
2625 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2626 }
2627
2628 i = 0;
2629 while (datalen > 0) {
2630 struct page *page = alloc_pages(GFP_KERNEL, 0);
2631 skb_shinfo(skb)->frags[i].page = page;
2632 skb_shinfo(skb)->frags[i].page_offset = 0;
2633 skb_shinfo(skb)->frags[i].size =
222f1806 2634 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2635 datalen -= skb_shinfo(skb)->frags[i].size;
2636 skb->len += skb_shinfo(skb)->frags[i].size;
2637 skb->data_len += skb_shinfo(skb)->frags[i].size;
2638 i++;
2639 skb_shinfo(skb)->nr_frags = i;
2640 }
2641
2642 while (i < frags) {
2643 int rem;
2644
2645 if (i == 0)
2646 break;
2647
2648 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2649 if (rem == 0)
2650 break;
2651
2652 skb_shinfo(skb)->frags[i - 1].size -= rem;
2653
222f1806
LC		 2654 skb_shinfo(skb)->frags[i] =
2655 skb_shinfo(skb)->frags[i - 1];
1da177e4 2656 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2657 skb_shinfo(skb)->frags[i].page =
2658 skb_shinfo(skb)->frags[i - 1].page;
2659 skb_shinfo(skb)->frags[i].page_offset +=
2660 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2661 skb_shinfo(skb)->frags[i].size = rem;
2662 i++;
2663 skb_shinfo(skb)->nr_frags = i;
2664 }
2665 }
2666
222f1806
LC		 2667 /* Stamp the time, and sequence number, convert them to network byte order */
2668
2669 if (pgh) {
2670 struct timeval timestamp;
2671
2672 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2673 pgh->seq_num = htonl(pkt_dev->seq_num);
2674
2675 do_gettimeofday(&timestamp);
2676 pgh->tv_sec = htonl(timestamp.tv_sec);
2677 pgh->tv_usec = htonl(timestamp.tv_usec);
2678 }
1da177e4 2679
a553e4a6
JHS		 2680#ifdef CONFIG_XFRM
2681 if (!process_ipsec(pkt_dev, skb, protocol))
2682 return NULL;
2683#endif
2684
1da177e4
LT		 2685 return skb;
2686}
2687
2688/*
4ec93edb 2689 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2690 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2691 *
4ec93edb 2692 * Slightly modified for kernel.
1da177e4
LT		 2693 * Should be candidate for net/ipv4/utils.c
2694 * --ro
2695 */
2696
222f1806 2697static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2698{
2699 unsigned int i;
222f1806 2700 unsigned int len = 0;
1da177e4
LT		 2701 unsigned long u;
2702 char suffix[16];
222f1806
LC		 2703 unsigned int prefixlen = 0;
2704 unsigned int suffixlen = 0;
252e3346 2705 __be32 tmp;
cfcabdcc 2706 char *pos;
1da177e4 2707
222f1806
LC		 2708 for (i = 0; i < 16; i++)
2709 ip[i] = 0;
1da177e4
LT		 2710
2711 for (;;) {
2712 if (*s == ':') {
2713 len++;
222f1806
LC		 2714 if (s[1] == ':') { /* Found "::", skip to part 2 */
2715 s += 2;
1da177e4
LT		 2716 len++;
2717 break;
2718 }
2719 s++;
2720 }
1da177e4 2721
cfcabdcc
SH		 2722 u = simple_strtoul(s, &pos, 16);
2723 i = pos - s;
222f1806
LC		 2724 if (!i)
2725 return 0;
2726 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2727
2728 /* the last 4 bytes may be written as IPv4 address */
2729
2730 tmp = in_aton(s);
222f1806
LC		 2731 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2732 return i + len;
1da177e4
LT		 2733 }
2734 ip[prefixlen++] = (u >> 8);
2735 ip[prefixlen++] = (u & 255);
222f1806
LC		 2736 s += i;
2737 len += i;
2738 if (prefixlen == 16)
1da177e4
LT		 2739 return len;
2740 }
2741
2742/* part 2, after "::" */
2743 for (;;) {
2744 if (*s == ':') {
222f1806 2745 if (suffixlen == 0)
1da177e4
LT		 2746 break;
2747 s++;
2748 len++;
222f1806 2749 } else if (suffixlen != 0)
1da177e4 2750 break;
cfcabdcc
SH		 2751
2752 u = simple_strtol(s, &pos, 16);
2753 i = pos - s;
1da177e4 2754 if (!i) {
222f1806
LC		 2755 if (*s)
2756 len--;
1da177e4
LT		 2757 break;
2758 }
222f1806 2759 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2760 tmp = in_aton(s);
222f1806
LC		 2761 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2762 sizeof(tmp));
2763 suffixlen += 4;
2764 len += strlen(s);
1da177e4
LT		 2765 break;
2766 }
2767 suffix[suffixlen++] = (u >> 8);
2768 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2769 s += i;
2770 len += i;
2771 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2772 break;
2773 }
222f1806
LC		 2774 for (i = 0; i < suffixlen; i++)
2775 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2776 return len;
2777}
2778
222f1806
LC		 2779static char tohex(char hexdigit)
2780{
2781 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2782}
2783
222f1806
LC		 2784static int fmt_xlong(char *s, unsigned int i)
2785{
2786 char *bak = s;
2787 *s = tohex((i >> 12) & 0xf);
2788 if (s != bak || *s != '0')
2789 ++s;
2790 *s = tohex((i >> 8) & 0xf);
2791 if (s != bak || *s != '0')
2792 ++s;
2793 *s = tohex((i >> 4) & 0xf);
2794 if (s != bak || *s != '0')
2795 ++s;
2796 *s = tohex(i & 0xf);
2797 return s - bak + 1;
1da177e4
LT		 2798}
2799
222f1806
LC		 2800static unsigned int fmt_ip6(char *s, const char ip[16])
2801{
1da177e4
LT		 2802 unsigned int len;
2803 unsigned int i;
2804 unsigned int temp;
2805 unsigned int compressing;
2806 int j;
2807
222f1806
LC		 2808 len = 0;
2809 compressing = 0;
2810 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2811
2812#ifdef V4MAPPEDPREFIX
222f1806
LC		 2813 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2814 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2815 temp = strlen(s);
2816 return len + temp;
1da177e4
LT		 2817 }
2818#endif
222f1806
LC		 2819 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2820 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2821 if (temp == 0) {
2822 if (!compressing) {
222f1806
LC		 2823 compressing = 1;
2824 if (j == 0) {
2825 *s++ = ':';
2826 ++len;
1da177e4
LT		 2827 }
2828 }
2829 } else {
2830 if (compressing) {
222f1806
LC		 2831 compressing = 0;
2832 *s++ = ':';
2833 ++len;
1da177e4 2834 }
222f1806
LC		 2835 i = fmt_xlong(s, temp);
2836 len += i;
2837 s += i;
2838 if (j < 14) {
1da177e4
LT		 2839 *s++ = ':';
2840 ++len;
2841 }
2842 }
2843 }
2844 if (compressing) {
222f1806
LC		 2845 *s++ = ':';
2846 ++len;
1da177e4 2847 }
222f1806 2848 *s = 0;
1da177e4
LT		 2849 return len;
2850}
2851
222f1806
LC		 2852static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2853 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2854{
2855 struct sk_buff *skb = NULL;
2856 __u8 *eth;
2857 struct udphdr *udph;
2858 int datalen;
2859 struct ipv6hdr *iph;
222f1806 2860 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2861 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2862 __be32 *mpls;
34954ddc
FF		 2863 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2864 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2865 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2866 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2867 u16 queue_map;
ca6549af
SW		 2868
2869 if (pkt_dev->nr_labels)
d5f1ce9a 2870 protocol = htons(ETH_P_MPLS_UC);
64053bee 2871
34954ddc 2872 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2873 protocol = htons(ETH_P_8021Q);
34954ddc 2874
64053bee
RO		 2875 /* Update any of the values, used when we're incrementing various
2876 * fields.
2877 */
fd2ea0a7 2878 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2879 mod_cur_headers(pkt_dev);
2880
ca6549af 2881 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
16dab72f 2882 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2883 if (!skb) {
2884 sprintf(pkt_dev->result, "No memory");
2885 return NULL;
2886 }
2887
2888 skb_reserve(skb, 16);
2889
2890 /* Reserve for ethernet and IP header */
2891 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2892 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2893 if (pkt_dev->nr_labels)
2894 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2895
2896 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2897 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2898 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2899 *svlan_tci = build_tci(pkt_dev->svlan_id,
2900 pkt_dev->svlan_cfi,
2901 pkt_dev->svlan_p);
34954ddc 2902 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2903 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2904 }
2905 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2906 *vlan_tci = build_tci(pkt_dev->vlan_id,
2907 pkt_dev->vlan_cfi,
2908 pkt_dev->vlan_p);
34954ddc 2909 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2910 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2911 }
2912
27a884dc 2913 skb->network_header = skb->tail;
b0e380b1 2914 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2915 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2916 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2917 iph = ipv6_hdr(skb);
2918 udph = udp_hdr(skb);
1da177e4 2919
1da177e4 2920 memcpy(eth, pkt_dev->hh, 12);
252e3346 2921 *(__be16 *) & eth[12] = protocol;
64053bee 2922
ca6549af
SW		 2923 /* Eth + IPh + UDPh + mpls */
2924 datalen = pkt_dev->cur_pkt_size - 14 -
2925 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2926 pkt_dev->pkt_overhead;
1da177e4 2927
222f1806 2928 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2929 datalen = sizeof(struct pktgen_hdr);
2930 if (net_ratelimit())
222f1806
LC		 2931 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2932 datalen);
1da177e4
LT		 2933 }
2934
2935 udph->source = htons(pkt_dev->cur_udp_src);
2936 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2937 udph->len = htons(datalen + sizeof(struct udphdr));
2938 udph->check = 0; /* No checksum */
1da177e4 2939
d5f1ce9a 2940 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2941
1ca7768c
FF		 2942 if (pkt_dev->traffic_class) {
2943 /* Version + traffic class + flow (0) */
252e3346 2944 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2945 }
2946
1da177e4
LT		 2947 iph->hop_limit = 32;
2948
2949 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2950 iph->nexthdr = IPPROTO_UDP;
2951
2952 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2953 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2954
b0e380b1 2955 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2956 pkt_dev->pkt_overhead);
ca6549af 2957 skb->protocol = protocol;
1da177e4
LT		 2958 skb->dev = odev;
2959 skb->pkt_type = PACKET_HOST;
2960
222f1806
LC		 2961 if (pkt_dev->nfrags <= 0)
2962 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2963 else {
2964 int frags = pkt_dev->nfrags;
2965 int i;
2966
222f1806
LC		 2967 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2968
1da177e4
LT		 2969 if (frags > MAX_SKB_FRAGS)
2970 frags = MAX_SKB_FRAGS;
222f1806
LC		 2971 if (datalen > frags * PAGE_SIZE) {
2972 skb_put(skb, datalen - frags * PAGE_SIZE);
2973 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2974 }
2975
2976 i = 0;
2977 while (datalen > 0) {
2978 struct page *page = alloc_pages(GFP_KERNEL, 0);
2979 skb_shinfo(skb)->frags[i].page = page;
2980 skb_shinfo(skb)->frags[i].page_offset = 0;
2981 skb_shinfo(skb)->frags[i].size =
222f1806 2982 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2983 datalen -= skb_shinfo(skb)->frags[i].size;
2984 skb->len += skb_shinfo(skb)->frags[i].size;
2985 skb->data_len += skb_shinfo(skb)->frags[i].size;
2986 i++;
2987 skb_shinfo(skb)->nr_frags = i;
2988 }
2989
2990 while (i < frags) {
2991 int rem;
2992
2993 if (i == 0)
2994 break;
2995
2996 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2997 if (rem == 0)
2998 break;
2999
3000 skb_shinfo(skb)->frags[i - 1].size -= rem;
3001
222f1806
LC		 3002 skb_shinfo(skb)->frags[i] =
3003 skb_shinfo(skb)->frags[i - 1];
1da177e4 3004 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3005 skb_shinfo(skb)->frags[i].page =
3006 skb_shinfo(skb)->frags[i - 1].page;
3007 skb_shinfo(skb)->frags[i].page_offset +=
3008 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3009 skb_shinfo(skb)->frags[i].size = rem;
3010 i++;
3011 skb_shinfo(skb)->nr_frags = i;
3012 }
3013 }
3014
222f1806 3015 /* Stamp the time, and sequence number, convert them to network byte order */
1da177e4 3016 /* should we update cloned packets too ? */
222f1806
LC		 3017 if (pgh) {
3018 struct timeval timestamp;
3019
3020 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3021 pgh->seq_num = htonl(pkt_dev->seq_num);
3022
3023 do_gettimeofday(&timestamp);
3024 pgh->tv_sec = htonl(timestamp.tv_sec);
3025 pgh->tv_usec = htonl(timestamp.tv_usec);
3026 }
34954ddc 3027 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3028
1da177e4
LT		 3029 return skb;
3030}
3031
475ac1e4
SH		 3032static struct sk_buff *fill_packet(struct net_device *odev,
3033 struct pktgen_dev *pkt_dev)
1da177e4 3034{
222f1806 3035 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3036 return fill_packet_ipv6(odev, pkt_dev);
3037 else
3038 return fill_packet_ipv4(odev, pkt_dev);
3039}
3040
222f1806 3041static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3042{
222f1806
LC		 3043 pkt_dev->seq_num = 1;
3044 pkt_dev->idle_acc = 0;
1da177e4 3045 pkt_dev->sofar = 0;
222f1806
LC		 3046 pkt_dev->tx_bytes = 0;
3047 pkt_dev->errors = 0;
1da177e4
LT		 3048}
3049
3050/* Set up structure for sending pkts, clear counters */
3051
3052static void pktgen_run(struct pktgen_thread *t)
3053{
c26a8016 3054 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3055 int started = 0;
3056
25c4e53a 3057 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3058
3059 if_lock(t);
c26a8016 3060 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3061
3062 /*
3063 * setup odev and create initial packet.
3064 */
3065 pktgen_setup_inject(pkt_dev);
3066
222f1806 3067 if (pkt_dev->odev) {
1da177e4 3068 pktgen_clear_counters(pkt_dev);
222f1806 3069 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4
LT		 3070 pkt_dev->skb = NULL;
3071 pkt_dev->started_at = getCurUs();
222f1806 3072 pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */
1da177e4 3073 pkt_dev->next_tx_ns = 0;
16dab72f 3074 set_pkt_overhead(pkt_dev);
222f1806 3075
1da177e4
LT		 3076 strcpy(pkt_dev->result, "Starting");
3077 started++;
222f1806 3078 } else
1da177e4
LT		 3079 strcpy(pkt_dev->result, "Error starting");
3080 }
3081 if_unlock(t);
222f1806
LC		 3082 if (started)
3083 t->control &= ~(T_STOP);
1da177e4
LT		 3084}
3085
3086static void pktgen_stop_all_threads_ifs(void)
3087{
cdcdbe0b 3088 struct pktgen_thread *t;
1da177e4 3089
25c4e53a 3090 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3091
6146e6a4 3092 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3093
3094 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3095 t->control |= T_STOP;
cdcdbe0b 3096
6146e6a4 3097 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3098}
3099
648fda74 3100static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3101{
648fda74 3102 const struct pktgen_dev *pkt_dev;
1da177e4 3103
c26a8016 3104 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3105 if (pkt_dev->running)
3106 return 1;
3107 return 0;
1da177e4
LT		 3108}
3109
222f1806 3110static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3111{
222f1806 3112 if_lock(t);
1da177e4 3113
222f1806 3114 while (thread_is_running(t)) {
1da177e4 3115
222f1806 3116 if_unlock(t);
1da177e4 3117
222f1806 3118 msleep_interruptible(100);
1da177e4 3119
222f1806
LC		 3120 if (signal_pending(current))
3121 goto signal;
3122 if_lock(t);
3123 }
3124 if_unlock(t);
3125 return 1;
3126signal:
3127 return 0;
1da177e4
LT		 3128}
3129
3130static int pktgen_wait_all_threads_run(void)
3131{
cdcdbe0b 3132 struct pktgen_thread *t;
1da177e4 3133 int sig = 1;
222f1806 3134
6146e6a4 3135 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3136
3137 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3138 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3139 if (sig == 0)
3140 break;
1da177e4 3141 }
cdcdbe0b
LC		 3142
3143 if (sig == 0)
3144 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3145 t->control |= (T_STOP);
cdcdbe0b 3146
6146e6a4 3147 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3148 return sig;
3149}
3150
3151static void pktgen_run_all_threads(void)
3152{
cdcdbe0b 3153 struct pktgen_thread *t;
1da177e4 3154
25c4e53a 3155 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3156
6146e6a4 3157 mutex_lock(&pktgen_thread_lock);
1da177e4 3158
cdcdbe0b 3159 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3160 t->control |= (T_RUN);
cdcdbe0b 3161
6146e6a4 3162 mutex_unlock(&pktgen_thread_lock);
1da177e4 3163
222f1806
LC		 3164 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3165
1da177e4
LT		 3166 pktgen_wait_all_threads_run();
3167}
3168
eb37b41c
JB		 3169static void pktgen_reset_all_threads(void)
3170{
3171 struct pktgen_thread *t;
3172
3173 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3174
3175 mutex_lock(&pktgen_thread_lock);
3176
3177 list_for_each_entry(t, &pktgen_threads, th_list)
3178 t->control |= (T_REMDEVALL);
3179
3180 mutex_unlock(&pktgen_thread_lock);
3181
3182 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3183
3184 pktgen_wait_all_threads_run();
3185}
3186
1da177e4
LT		 3187static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3188{
222f1806
LC		 3189 __u64 total_us, bps, mbps, pps, idle;
3190 char *p = pkt_dev->result;
3191
3192 total_us = pkt_dev->stopped_at - pkt_dev->started_at;
3193
3194 idle = pkt_dev->idle_acc;
3195
3196 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3197 (unsigned long long)total_us,
3198 (unsigned long long)(total_us - idle),
3199 (unsigned long long)idle,
3200 (unsigned long long)pkt_dev->sofar,
3201 pkt_dev->cur_pkt_size, nr_frags);
3202
3203 pps = pkt_dev->sofar * USEC_PER_SEC;
3204
3205 while ((total_us >> 32) != 0) {
3206 pps >>= 1;
3207 total_us >>= 1;
3208 }
3209
3210 do_div(pps, total_us);
3211
3212 bps = pps * 8 * pkt_dev->cur_pkt_size;
3213
3214 mbps = bps;
3215 do_div(mbps, 1000000);
3216 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3217 (unsigned long long)pps,
3218 (unsigned long long)mbps,
3219 (unsigned long long)bps,
3220 (unsigned long long)pkt_dev->errors);
1da177e4 3221}
1da177e4
LT		 3222
3223/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3224static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3225{
222f1806 3226 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3227
222f1806 3228 if (!pkt_dev->running) {
25a8b254
DM		 3229 printk(KERN_WARNING "pktgen: interface: %s is already "
3230 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3231 return -EINVAL;
3232 }
1da177e4 3233
3bda06a3
SH		 3234 kfree_skb(pkt_dev->skb);
3235 pkt_dev->skb = NULL;
222f1806
LC		 3236 pkt_dev->stopped_at = getCurUs();
3237 pkt_dev->running = 0;
1da177e4 3238
95ed63f7 3239 show_results(pkt_dev, nr_frags);
1da177e4 3240
222f1806 3241 return 0;
1da177e4
LT		 3242}
3243
222f1806 3244static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3245{
c26a8016 3246 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3247
1da177e4
LT		 3248 if_lock(t);
3249
c26a8016
LC		 3250 list_for_each_entry(pkt_dev, &t->if_list, list) {
3251 if (!pkt_dev->running)
222f1806
LC		 3252 continue;
3253 if (best == NULL)
c26a8016
LC		 3254 best = pkt_dev;
3255 else if (pkt_dev->next_tx_us < best->next_tx_us)
3256 best = pkt_dev;
1da177e4
LT		 3257 }
3258 if_unlock(t);
222f1806 3259 return best;
1da177e4
LT		 3260}
3261
222f1806
LC		 3262static void pktgen_stop(struct pktgen_thread *t)
3263{
c26a8016 3264 struct pktgen_dev *pkt_dev;
1da177e4 3265
25c4e53a 3266 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3267
222f1806 3268 if_lock(t);
1da177e4 3269
c26a8016
LC		 3270 list_for_each_entry(pkt_dev, &t->if_list, list) {
3271 pktgen_stop_device(pkt_dev);
95ed63f7 3272 }
1da177e4 3273
222f1806 3274 if_unlock(t);
1da177e4
LT		 3275}
3276
95ed63f7
AK		 3277/*
3278 * one of our devices needs to be removed - find it
3279 * and remove it
3280 */
3281static void pktgen_rem_one_if(struct pktgen_thread *t)
3282{
c26a8016
LC		 3283 struct list_head *q, *n;
3284 struct pktgen_dev *cur;
95ed63f7 3285
25c4e53a 3286 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3287
3288 if_lock(t);
3289
c26a8016
LC		 3290 list_for_each_safe(q, n, &t->if_list) {
3291 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3292
222f1806
LC		 3293 if (!cur->removal_mark)
3294 continue;
95ed63f7 3295
86dc1ad2 3296 kfree_skb(cur->skb);
95ed63f7
AK		 3297 cur->skb = NULL;
3298
3299 pktgen_remove_device(t, cur);
3300
3301 break;
3302 }
3303
3304 if_unlock(t);
3305}
3306
222f1806 3307static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3308{
c26a8016
LC		 3309 struct list_head *q, *n;
3310 struct pktgen_dev *cur;
222f1806
LC		 3311
3312 /* Remove all devices, free mem */
95ed63f7 3313
25c4e53a 3314 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3315 if_lock(t);
1da177e4 3316
c26a8016
LC		 3317 list_for_each_safe(q, n, &t->if_list) {
3318 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3319
86dc1ad2 3320 kfree_skb(cur->skb);
95ed63f7
AK		 3321 cur->skb = NULL;
3322
1da177e4
LT		 3323 pktgen_remove_device(t, cur);
3324 }
3325
222f1806 3326 if_unlock(t);
1da177e4
LT		 3327}
3328
222f1806 3329static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3330{
222f1806 3331 /* Remove from the thread list */
1da177e4 3332
ee74baa7 3333 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3334
6146e6a4 3335 mutex_lock(&pktgen_thread_lock);
1da177e4 3336
cdcdbe0b
LC		 3337 list_del(&t->th_list);
3338
6146e6a4 3339 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3340}
3341
3791decb
SH		 3342static void idle(struct pktgen_dev *pkt_dev)
3343{
3344 u64 idle_start = getCurUs();
3345
3346 if (need_resched())
3347 schedule();
3348 else
3349 cpu_relax();
3350
3351 pkt_dev->idle_acc += getCurUs() - idle_start;
3352}
3353
475ac1e4 3354static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3355{
00829823
SH		 3356 struct net_device *odev = pkt_dev->odev;
3357 int (*xmit)(struct sk_buff *, struct net_device *)
3358 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3359 struct netdev_queue *txq;
fd2ea0a7 3360 u16 queue_map;
1da177e4
LT		 3361 int ret;
3362
1da177e4
LT		 3363 if (pkt_dev->delay_us || pkt_dev->delay_ns) {
3364 u64 now;
3365
3366 now = getCurUs();
3367 if (now < pkt_dev->next_tx_us)
3368 spin(pkt_dev, pkt_dev->next_tx_us);
3369
3370 /* This is max DELAY, this has special meaning of
3371 * "never transmit"
3372 */
3373 if (pkt_dev->delay_us == 0x7FFFFFFF) {
3374 pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us;
3375 pkt_dev->next_tx_ns = pkt_dev->delay_ns;
3791decb 3376 return;
1da177e4
LT		 3377 }
3378 }
222f1806 3379
fd2ea0a7
DM		 3380 if (!pkt_dev->skb) {
3381 set_cur_queue_map(pkt_dev);
3382 queue_map = pkt_dev->cur_queue_map;
3383 } else {
3384 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3385 }
3386
3387 txq = netdev_get_tx_queue(odev, queue_map);
3791decb
SH		 3388 /* Did we saturate the queue already? */
3389 if (netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)) {
3390 /* If device is down, then all queues are permnantly frozen */
3391 if (netif_running(odev))
3392 idle(pkt_dev);
3393 else
1da177e4 3394 pktgen_stop_device(pkt_dev);
3791decb 3395 return;
1da177e4 3396 }
222f1806 3397
7d7bb1cf
SH		 3398 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3399 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3400 /* build a new pkt */
3401 kfree_skb(pkt_dev->skb);
3402
3403 pkt_dev->skb = fill_packet(odev, pkt_dev);
3404 if (pkt_dev->skb == NULL) {
3405 printk(KERN_ERR "pktgen: ERROR: couldn't "
3406 "allocate skb in fill_packet.\n");
3407 schedule();
3408 pkt_dev->clone_count--; /* back out increment, OOM */
3409 return;
1da177e4 3410 }
7d7bb1cf
SH		 3411
3412 pkt_dev->allocated_skbs++;
3413 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3414 }
95ed63f7 3415
fd2ea0a7
DM		 3416 /* fill_packet() might have changed the queue */
3417 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3418 txq = netdev_get_tx_queue(odev, queue_map);
3419
3420 __netif_tx_lock_bh(txq);
3791decb
SH		 3421 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
3422 pkt_dev->last_ok = 0;
3423 else {
1da177e4 3424 atomic_inc(&(pkt_dev->skb->users));
222f1806 3425 retry_now:
00829823 3426 ret = (*xmit)(pkt_dev->skb, odev);
1da177e4 3427 if (likely(ret == NETDEV_TX_OK)) {
08baf561 3428 txq_trans_update(txq);
222f1806 3429 pkt_dev->last_ok = 1;
1da177e4
LT		 3430 pkt_dev->sofar++;
3431 pkt_dev->seq_num++;
3432 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
222f1806
LC		 3433
3434 } else if (ret == NETDEV_TX_LOCKED
1da177e4
LT		 3435 && (odev->features & NETIF_F_LLTX)) {
3436 cpu_relax();
3437 goto retry_now;
222f1806
LC		 3438 } else { /* Retry it next time */
3439
1da177e4 3440 atomic_dec(&(pkt_dev->skb->users));
222f1806 3441
1da177e4
LT		 3442 if (debug && net_ratelimit())
3443 printk(KERN_INFO "pktgen: Hard xmit error\n");
222f1806 3444
1da177e4
LT		 3445 pkt_dev->errors++;
3446 pkt_dev->last_ok = 0;
3447 }
3448
3449 pkt_dev->next_tx_us = getCurUs();
3450 pkt_dev->next_tx_ns = 0;
3451
3452 pkt_dev->next_tx_us += pkt_dev->delay_us;
3453 pkt_dev->next_tx_ns += pkt_dev->delay_ns;
3454
3455 if (pkt_dev->next_tx_ns > 1000) {
3456 pkt_dev->next_tx_us++;
3457 pkt_dev->next_tx_ns -= 1000;
3458 }
222f1806 3459 }
fd2ea0a7 3460 __netif_tx_unlock_bh(txq);
222f1806 3461
1da177e4
LT		 3462 /* If pkt_dev->count is zero, then run forever */
3463 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
3464 if (atomic_read(&(pkt_dev->skb->users)) != 1) {
475ac1e4 3465 u64 idle_start = getCurUs();
1da177e4
LT		 3466 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3467 if (signal_pending(current)) {
3468 break;
3469 }
3470 schedule();
3471 }
3472 pkt_dev->idle_acc += getCurUs() - idle_start;
3473 }
222f1806 3474
1da177e4
LT		 3475 /* Done with this */
3476 pktgen_stop_device(pkt_dev);
222f1806 3477 }
222f1806 3478}
1da177e4 3479
4ec93edb 3480/*
1da177e4
LT		 3481 * Main loop of the thread goes here
3482 */
3483
ee74baa7 3484static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3485{
3486 DEFINE_WAIT(wait);
ee74baa7 3487 struct pktgen_thread *t = arg;
222f1806 3488 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3489 int cpu = t->cpu;
1da177e4 3490
ee74baa7 3491 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3492
3493 init_waitqueue_head(&t->queue);
d3ede327 3494 complete(&t->start_done);
1da177e4 3495
ba25f9dc 3496 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3497
ee74baa7 3498 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3499
83144186
RW		 3500 set_freezable();
3501
ee74baa7
DM		 3502 while (!kthread_should_stop()) {
3503 pkt_dev = next_to_run(t);
1da177e4 3504
ee74baa7
DM		 3505 if (!pkt_dev &&
3506 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3507 == 0) {
3508 prepare_to_wait(&(t->queue), &wait,
3509 TASK_INTERRUPTIBLE);
3510 schedule_timeout(HZ / 10);
3511 finish_wait(&(t->queue), &wait);
3512 }
1da177e4 3513
ee74baa7 3514 __set_current_state(TASK_RUNNING);
222f1806 3515
b163911f 3516 if (pkt_dev)
1da177e4
LT		 3517 pktgen_xmit(pkt_dev);
3518
222f1806 3519 if (t->control & T_STOP) {
1da177e4
LT		 3520 pktgen_stop(t);
3521 t->control &= ~(T_STOP);
3522 }
3523
222f1806 3524 if (t->control & T_RUN) {
1da177e4
LT		 3525 pktgen_run(t);
3526 t->control &= ~(T_RUN);
3527 }
3528
222f1806 3529 if (t->control & T_REMDEVALL) {
1da177e4 3530 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3531 t->control &= ~(T_REMDEVALL);
3532 }
3533
222f1806 3534 if (t->control & T_REMDEV) {
95ed63f7 3535 pktgen_rem_one_if(t);
1da177e4
LT		 3536 t->control &= ~(T_REMDEV);
3537 }
3538
09fe3ef4
AM		 3539 try_to_freeze();
3540
ee74baa7 3541 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3542 }
1da177e4 3543
25c4e53a 3544 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3545 pktgen_stop(t);
1da177e4 3546
25c4e53a 3547 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3548 pktgen_rem_all_ifs(t);
1da177e4 3549
25c4e53a 3550 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3551 pktgen_rem_thread(t);
cdcdbe0b 3552
ee74baa7 3553 return 0;
1da177e4
LT		 3554}
3555
222f1806
LC		 3556static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3557 const char *ifname)
1da177e4 3558{
c26a8016 3559 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3560 if_lock(t);
3561
c26a8016 3562 list_for_each_entry(p, &t->if_list, list)
39df232f 3563 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3564 pkt_dev = p;
222f1806
LC		 3565 break;
3566 }
222f1806
LC		 3567
3568 if_unlock(t);
25c4e53a 3569 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3570 return pkt_dev;
1da177e4
LT		 3571}
3572
4ec93edb
YH		 3573/*
3574 * Adds a dev at front of if_list.
1da177e4
LT		 3575 */
3576
222f1806
LC		 3577static int add_dev_to_thread(struct pktgen_thread *t,
3578 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3579{
3580 int rv = 0;
222f1806
LC		 3581
3582 if_lock(t);
3583
3584 if (pkt_dev->pg_thread) {
25a8b254
DM		 3585 printk(KERN_ERR "pktgen: ERROR: already assigned "
3586 "to a thread.\n");
222f1806
LC		 3587 rv = -EBUSY;
3588 goto out;
3589 }
c26a8016
LC		 3590
3591 list_add(&pkt_dev->list, &t->if_list);
222f1806 3592 pkt_dev->pg_thread = t;
1da177e4
LT		 3593 pkt_dev->running = 0;
3594
222f1806
LC		 3595out:
3596 if_unlock(t);
3597 return rv;
1da177e4
LT		 3598}
3599
3600/* Called under thread lock */
3601
222f1806 3602static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3603{
222f1806 3604 struct pktgen_dev *pkt_dev;
39df232f 3605 int err;
222f1806 3606
1da177e4
LT		 3607 /* We don't allow a device to be on several threads */
3608
d50a6b56
SH		 3609 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3610 if (pkt_dev) {
25a8b254 3611 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3612 return -EBUSY;
3613 }
d50a6b56
SH		 3614
3615 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3616 if (!pkt_dev)
3617 return -ENOMEM;
3618
222f1806 3619 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3620 if (pkt_dev->flows == NULL) {
3621 kfree(pkt_dev);
3622 return -ENOMEM;
3623 }
222f1806 3624 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3625
95ed63f7 3626 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3627 pkt_dev->min_pkt_size = ETH_ZLEN;
3628 pkt_dev->max_pkt_size = ETH_ZLEN;
3629 pkt_dev->nfrags = 0;
3630 pkt_dev->clone_skb = pg_clone_skb_d;
3631 pkt_dev->delay_us = pg_delay_d / 1000;
3632 pkt_dev->delay_ns = pg_delay_d % 1000;
3633 pkt_dev->count = pg_count_d;
3634 pkt_dev->sofar = 0;
222f1806 3635 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3636 pkt_dev->udp_src_max = 9;
3637 pkt_dev->udp_dst_min = 9;
3638 pkt_dev->udp_dst_max = 9;
3639
34954ddc
FF		 3640 pkt_dev->vlan_p = 0;
3641 pkt_dev->vlan_cfi = 0;
3642 pkt_dev->vlan_id = 0xffff;
3643 pkt_dev->svlan_p = 0;
3644 pkt_dev->svlan_cfi = 0;
3645 pkt_dev->svlan_id = 0xffff;
3646
39df232f
SH		 3647 err = pktgen_setup_dev(pkt_dev, ifname);
3648 if (err)
3649 goto out1;
d50a6b56 3650
5efdccbc
DL		 3651 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3652 &pktgen_if_fops, pkt_dev);
39df232f 3653 if (!pkt_dev->entry) {
25a8b254 3654 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3655 PG_PROC_DIR, ifname);
39df232f
SH		 3656 err = -EINVAL;
3657 goto out2;
d50a6b56 3658 }
a553e4a6
JHS		 3659#ifdef CONFIG_XFRM
3660 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3661 pkt_dev->ipsproto = IPPROTO_ESP;
3662#endif
d50a6b56
SH		 3663
3664 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3665out2:
3666 dev_put(pkt_dev->odev);
3667out1:
a553e4a6
JHS		 3668#ifdef CONFIG_XFRM
3669 free_SAs(pkt_dev);
3670#endif
1d0ebfe7 3671 vfree(pkt_dev->flows);
39df232f
SH		 3672 kfree(pkt_dev);
3673 return err;
1da177e4
LT		 3674}
3675
ee74baa7 3676static int __init pktgen_create_thread(int cpu)
1da177e4 3677{
cdcdbe0b 3678 struct pktgen_thread *t;
d50a6b56 3679 struct proc_dir_entry *pe;
ee74baa7 3680 struct task_struct *p;
222f1806
LC		 3681
3682 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3683 if (!t) {
25a8b254
DM		 3684 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3685 "create new thread.\n");
222f1806
LC		 3686 return -ENOMEM;
3687 }
3688
222f1806 3689 spin_lock_init(&t->if_lock);
1da177e4 3690 t->cpu = cpu;
222f1806 3691
ee74baa7
DM		 3692 INIT_LIST_HEAD(&t->if_list);
3693
3694 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3695 init_completion(&t->start_done);
ee74baa7
DM		 3696
3697 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3698 if (IS_ERR(p)) {
25a8b254
DM		 3699 printk(KERN_ERR "pktgen: kernel_thread() failed "
3700 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3701 list_del(&t->th_list);
3702 kfree(t);
3703 return PTR_ERR(p);
3704 }
3705 kthread_bind(p, cpu);
3706 t->tsk = p;
3707
5efdccbc
DL		 3708 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3709 &pktgen_thread_fops, t);
222f1806 3710 if (!pe) {
25a8b254 3711 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3712 PG_PROC_DIR, t->tsk->comm);
3713 kthread_stop(p);
3714 list_del(&t->th_list);
222f1806
LC		 3715 kfree(t);
3716 return -EINVAL;
3717 }
d50a6b56 3718
ee74baa7 3719 wake_up_process(p);
d3ede327 3720 wait_for_completion(&t->start_done);
1da177e4
LT		 3721
3722 return 0;
3723}
3724
4ec93edb
YH		 3725/*
3726 * Removes a device from the thread if_list.
1da177e4 3727 */
222f1806
LC		 3728static void _rem_dev_from_if_list(struct pktgen_thread *t,
3729 struct pktgen_dev *pkt_dev)
1da177e4 3730{
c26a8016
LC		 3731 struct list_head *q, *n;
3732 struct pktgen_dev *p;
1da177e4 3733
c26a8016
LC		 3734 list_for_each_safe(q, n, &t->if_list) {
3735 p = list_entry(q, struct pktgen_dev, list);
3736 if (p == pkt_dev)
3737 list_del(&p->list);
1da177e4
LT		 3738 }
3739}
3740
222f1806
LC		 3741static int pktgen_remove_device(struct pktgen_thread *t,
3742 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3743{
3744
25c4e53a 3745 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3746
222f1806 3747 if (pkt_dev->running) {
25a8b254
DM		 3748 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3749 "running interface, stopping it now.\n");
222f1806
LC		 3750 pktgen_stop_device(pkt_dev);
3751 }
3752
3753 /* Dis-associate from the interface */
1da177e4
LT		 3754
3755 if (pkt_dev->odev) {
3756 dev_put(pkt_dev->odev);
222f1806
LC		 3757 pkt_dev->odev = NULL;
3758 }
3759
1da177e4
LT		 3760 /* And update the thread if_list */
3761
3762 _rem_dev_from_if_list(t, pkt_dev);
3763
39df232f
SH		 3764 if (pkt_dev->entry)
3765 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3766
a553e4a6
JHS		 3767#ifdef CONFIG_XFRM
3768 free_SAs(pkt_dev);
3769#endif
1d0ebfe7 3770 vfree(pkt_dev->flows);
1da177e4 3771 kfree(pkt_dev);
222f1806 3772 return 0;
1da177e4
LT		 3773}
3774
222f1806 3775static int __init pg_init(void)
1da177e4
LT		 3776{
3777 int cpu;
d50a6b56 3778 struct proc_dir_entry *pe;
1da177e4 3779
25a8b254 3780 printk(KERN_INFO "%s", version);
1da177e4 3781
457c4cbc 3782 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3783 if (!pg_proc_dir)
3784 return -ENODEV;
1da177e4 3785
25296d59 3786 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3787 if (pe == NULL) {
25a8b254
DM		 3788 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3789 "procfs entry.\n", PGCTRL);
457c4cbc 3790 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3791 return -EINVAL;
3792 }
1da177e4 3793
1da177e4
LT		 3794 /* Register us to receive netdevice events */
3795 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3796
670c02c2 3797 for_each_online_cpu(cpu) {
8024bb24 3798 int err;
1da177e4 3799
ee74baa7 3800 err = pktgen_create_thread(cpu);
8024bb24 3801 if (err)
25a8b254
DM		 3802 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3803 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3804 }
8024bb24
LC		 3805
3806 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3807 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3808 "all threads\n");
8024bb24
LC		 3809 unregister_netdevice_notifier(&pktgen_notifier_block);
3810 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3811 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3812 return -ENODEV;
3813 }
3814
222f1806 3815 return 0;
1da177e4
LT		 3816}
3817
3818static void __exit pg_cleanup(void)
3819{
cdcdbe0b
LC		 3820 struct pktgen_thread *t;
3821 struct list_head *q, *n;
1da177e4
LT		 3822 wait_queue_head_t queue;
3823 init_waitqueue_head(&queue);
3824
222f1806 3825 /* Stop all interfaces & threads */
1da177e4 3826
cdcdbe0b
LC		 3827 list_for_each_safe(q, n, &pktgen_threads) {
3828 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3829 kthread_stop(t->tsk);
3830 kfree(t);
222f1806 3831 }
1da177e4 3832
222f1806 3833 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3834 unregister_netdevice_notifier(&pktgen_notifier_block);
3835
222f1806 3836 /* Clean up proc file system */
d50a6b56 3837 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3838 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3839}
3840
1da177e4
LT		 3841module_init(pg_init);
3842module_exit(pg_cleanup);
3843
3844MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3845MODULE_DESCRIPTION("Packet Generator tool");
3846MODULE_LICENSE("GPL");
3847module_param(pg_count_d, int, 0);
3848module_param(pg_delay_d, int, 0);
3849module_param(pg_clone_skb_d, int, 0);
3850module_param(debug, int, 0);
kernel source for telekom puls (alcatel/mediatek)