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Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[deliverable/linux.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
268bb0ce 159#include <linux/prefetch.h>
457c4cbc 160#include <net/net_namespace.h>
1da177e4
LT		 161#include <net/checksum.h>
162#include <net/ipv6.h>
c26bf4a5 163#include <net/udp.h>
73d94e94 164#include <net/ip6_checksum.h>
1da177e4 165#include <net/addrconf.h>
a553e4a6
JHS		 166#ifdef CONFIG_XFRM
167#include <net/xfrm.h>
168#endif
4e58a027 169#include <net/netns/generic.h>
1da177e4
LT		 170#include <asm/byteorder.h>
171#include <linux/rcupdate.h>
1977f032 172#include <linux/bitops.h>
63adc6fb
SH		 173#include <linux/io.h>
174#include <linux/timex.h>
175#include <linux/uaccess.h>
1da177e4 176#include <asm/dma.h>
222f1806 177#include <asm/div64.h> /* do_div */
1da177e4 178
43d28b65 179#define VERSION "2.74"
1da177e4 180#define IP_NAME_SZ 32
ca6549af 181#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 182#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 183
f9467eae
JP		 184#define func_enter() pr_debug("entering %s\n", __func__);
185
1da177e4 186/* Device flag bits */
222f1806
LC		 187#define F_IPSRC_RND (1<<0) /* IP-Src Random */
188#define F_IPDST_RND (1<<1) /* IP-Dst Random */
189#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
190#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
191#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
192#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
193#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
194#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 195#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 196#define F_VID_RND (1<<9) /* Random VLAN ID */
197#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 198#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 199#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 200#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 201#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 202#define F_NODE (1<<15) /* Node memory alloc*/
c26bf4a5 203#define F_UDPCSUM (1<<16) /* Include UDP checksum */
1da177e4
LT		 204
205/* Thread control flag bits */
6b80d6a6
SH		 206#define T_STOP (1<<0) /* Stop run */
207#define T_RUN (1<<1) /* Start run */
208#define T_REMDEVALL (1<<2) /* Remove all devs */
209#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 210
1da177e4
LT		 211/* If lock -- can be removed after some work */
212#define if_lock(t) spin_lock(&(t->if_lock));
213#define if_unlock(t) spin_unlock(&(t->if_lock));
214
215/* Used to help with determining the pkts on receive */
216#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 217#define PG_PROC_DIR "pktgen"
218#define PGCTRL "pgctrl"
1da177e4
LT		 219
220#define MAX_CFLOWS 65536
221
34954ddc
FF		 222#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
223#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
224
222f1806 225struct flow_state {
252e3346 226 __be32 cur_daddr;
222f1806 227 int count;
a553e4a6
JHS		 228#ifdef CONFIG_XFRM
229 struct xfrm_state *x;
230#endif
007a531b 231 __u32 flags;
1da177e4
LT		 232};
233
007a531b
JHS		 234/* flow flag bits */
235#define F_INIT (1<<0) /* flow has been initialized */
236
1da177e4 237struct pktgen_dev {
1da177e4
LT		 238 /*
239 * Try to keep frequent/infrequent used vars. separated.
240 */
39df232f
SH		 241 struct proc_dir_entry *entry; /* proc file */
242 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 243 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 244
63adc6fb 245 int running; /* if false, the test will stop */
1da177e4 246
222f1806
LC		 247 /* If min != max, then we will either do a linear iteration, or
248 * we will do a random selection from within the range.
249 */
250 __u32 flags;
95ed63f7
AK		 251 int removal_mark; /* non-zero => the device is marked for
252 * removal by worker thread */
1da177e4 253
68bf9f0b
AW		 254 int min_pkt_size;
255 int max_pkt_size;
16dab72f 256 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 257 int nfrags;
26ad7879 258 struct page *page;
fd29cf72
SH		 259 u64 delay; /* nano-seconds */
260
222f1806
LC		 261 __u64 count; /* Default No packets to send */
262 __u64 sofar; /* How many pkts we've sent so far */
263 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 264 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 265
266 /* runtime counters relating to clone_skb */
222f1806
LC		 267
268 __u64 allocated_skbs;
269 __u32 clone_count;
270 int last_ok; /* Was last skb sent?
63adc6fb
SH		 271 * Or a failed transmit of some sort?
272 * This will keep sequence numbers in order
222f1806 273 */
fd29cf72
SH		 274 ktime_t next_tx;
275 ktime_t started_at;
276 ktime_t stopped_at;
277 u64 idle_acc; /* nano-seconds */
278
222f1806
LC		 279 __u32 seq_num;
280
63adc6fb
SH		 281 int clone_skb; /*
282 * Use multiple SKBs during packet gen.
283 * If this number is greater than 1, then
284 * that many copies of the same packet will be
285 * sent before a new packet is allocated.
286 * If you want to send 1024 identical packets
287 * before creating a new packet,
288 * set clone_skb to 1024.
222f1806
LC		 289 */
290
291 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
293 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
294 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
295
296 struct in6_addr in6_saddr;
297 struct in6_addr in6_daddr;
298 struct in6_addr cur_in6_daddr;
299 struct in6_addr cur_in6_saddr;
1da177e4 300 /* For ranges */
222f1806
LC		 301 struct in6_addr min_in6_daddr;
302 struct in6_addr max_in6_daddr;
303 struct in6_addr min_in6_saddr;
304 struct in6_addr max_in6_saddr;
305
306 /* If we're doing ranges, random or incremental, then this
307 * defines the min/max for those ranges.
308 */
252e3346
AV		 309 __be32 saddr_min; /* inclusive, source IP address */
310 __be32 saddr_max; /* exclusive, source IP address */
311 __be32 daddr_min; /* inclusive, dest IP address */
312 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 313
314 __u16 udp_src_min; /* inclusive, source UDP port */
315 __u16 udp_src_max; /* exclusive, source UDP port */
316 __u16 udp_dst_min; /* inclusive, dest UDP port */
317 __u16 udp_dst_max; /* exclusive, dest UDP port */
318
1ca7768c 319 /* DSCP + ECN */
63adc6fb
SH		 320 __u8 tos; /* six MSB of (former) IPv4 TOS
321 are for dscp codepoint */
322 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
323 (see RFC 3260, sec. 4) */
1ca7768c 324
ca6549af 325 /* MPLS */
95c96174 326 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 327 __be32 labels[MAX_MPLS_LABELS];
328
34954ddc
FF		 329 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
330 __u8 vlan_p;
331 __u8 vlan_cfi;
332 __u16 vlan_id; /* 0xffff means no vlan tag */
333
334 __u8 svlan_p;
335 __u8 svlan_cfi;
336 __u16 svlan_id; /* 0xffff means no svlan tag */
337
222f1806
LC		 338 __u32 src_mac_count; /* How many MACs to iterate through */
339 __u32 dst_mac_count; /* How many MACs to iterate through */
340
341 unsigned char dst_mac[ETH_ALEN];
342 unsigned char src_mac[ETH_ALEN];
343
344 __u32 cur_dst_mac_offset;
345 __u32 cur_src_mac_offset;
252e3346
AV		 346 __be32 cur_saddr;
347 __be32 cur_daddr;
66ed1e5e 348 __u16 ip_id;
222f1806
LC		 349 __u16 cur_udp_dst;
350 __u16 cur_udp_src;
45b270f8 351 __u16 cur_queue_map;
222f1806 352 __u32 cur_pkt_size;
baac8564 353 __u32 last_pkt_size;
222f1806
LC		 354
355 __u8 hh[14];
356 /* = {
357 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
358
359 We fill in SRC address later
360 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
361 0x08, 0x00
362 };
363 */
364 __u16 pad; /* pad out the hh struct to an even 16 bytes */
365
63adc6fb 366 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 367 * are transmitting the same one multiple times
368 */
63adc6fb
SH		 369 struct net_device *odev; /* The out-going device.
370 * Note that the device should have it's
371 * pg_info pointer pointing back to this
372 * device.
373 * Set when the user specifies the out-going
374 * device name (not when the inject is
375 * started as it used to do.)
376 */
593f63b0 377 char odevname[32];
1da177e4 378 struct flow_state *flows;
95c96174
ED		 379 unsigned int cflows; /* Concurrent flows (config) */
380 unsigned int lflow; /* Flow length (config) */
381 unsigned int nflows; /* accumulated flows (stats) */
382 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 383
384 u16 queue_map_min;
385 u16 queue_map_max;
9e50e3ac 386 __u32 skb_priority; /* skb priority field */
e99b99b4 387 int node; /* Memory node */
45b270f8 388
a553e4a6
JHS		 389#ifdef CONFIG_XFRM
390 __u8 ipsmode; /* IPSEC mode (config) */
391 __u8 ipsproto; /* IPSEC type (config) */
392#endif
39df232f 393 char result[512];
1da177e4
LT		 394};
395
396struct pktgen_hdr {
252e3346
AV		 397 __be32 pgh_magic;
398 __be32 seq_num;
399 __be32 tv_sec;
400 __be32 tv_usec;
1da177e4
LT		 401};
402
4e58a027
CW		 403
404static int pg_net_id __read_mostly;
405
406struct pktgen_net {
407 struct net *net;
408 struct proc_dir_entry *proc_dir;
409 struct list_head pktgen_threads;
410 bool pktgen_exiting;
411};
551eaff1 412
1da177e4 413struct pktgen_thread {
63adc6fb 414 spinlock_t if_lock; /* for list of devices */
c26a8016 415 struct list_head if_list; /* All device here */
cdcdbe0b 416 struct list_head th_list;
ee74baa7 417 struct task_struct *tsk;
222f1806 418 char result[512];
222f1806 419
63adc6fb
SH		 420 /* Field for thread to receive "posted" events terminate,
421 stop ifs etc. */
222f1806
LC		 422
423 u32 control;
1da177e4
LT		 424 int cpu;
425
222f1806 426 wait_queue_head_t queue;
d3ede327 427 struct completion start_done;
4e58a027 428 struct pktgen_net *net;
1da177e4
LT		 429};
430
431#define REMOVE 1
432#define FIND 0
433
c3d2f52d 434static const char version[] =
f9467eae
JP		 435 "Packet Generator for packet performance testing. "
436 "Version: " VERSION "\n";
1da177e4 437
222f1806
LC		 438static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
439static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
440static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 441 const char *ifname, bool exact);
1da177e4 442static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 443static void pktgen_run_all_threads(struct pktgen_net *pn);
444static void pktgen_reset_all_threads(struct pktgen_net *pn);
445static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 446
222f1806 447static void pktgen_stop(struct pktgen_thread *t);
1da177e4 448static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 449
1da177e4 450/* Module parameters, defaults. */
65c5b786
SH		 451static int pg_count_d __read_mostly = 1000;
452static int pg_delay_d __read_mostly;
453static int pg_clone_skb_d __read_mostly;
454static int debug __read_mostly;
1da177e4 455
222fa076 456static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 457
1da177e4
LT		 458static struct notifier_block pktgen_notifier_block = {
459 .notifier_call = pktgen_device_event,
460};
461
1da177e4 462/*
4ec93edb 463 * /proc handling functions
1da177e4
LT		 464 *
465 */
466
d50a6b56 467static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 468{
c3d2f52d 469 seq_puts(seq, version);
d50a6b56 470 return 0;
1da177e4
LT		 471}
472
63adc6fb
SH		 473static ssize_t pgctrl_write(struct file *file, const char __user *buf,
474 size_t count, loff_t *ppos)
1da177e4 475{
1da177e4 476 int err = 0;
d50a6b56 477 char data[128];
4e58a027 478 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 479
222f1806
LC		 480 if (!capable(CAP_NET_ADMIN)) {
481 err = -EPERM;
1da177e4 482 goto out;
222f1806 483 }
1da177e4 484
d50a6b56
SH		 485 if (count > sizeof(data))
486 count = sizeof(data);
1da177e4 487
1da177e4 488 if (copy_from_user(data, buf, count)) {
b4099fab 489 err = -EFAULT;
d50a6b56 490 goto out;
222f1806
LC		 491 }
492 data[count - 1] = 0; /* Make string */
1da177e4 493
222f1806 494 if (!strcmp(data, "stop"))
4e58a027 495 pktgen_stop_all_threads_ifs(pn);
1da177e4 496
222f1806 497 else if (!strcmp(data, "start"))
4e58a027 498 pktgen_run_all_threads(pn);
1da177e4 499
eb37b41c 500 else if (!strcmp(data, "reset"))
4e58a027 501 pktgen_reset_all_threads(pn);
eb37b41c 502
222f1806 503 else
f9467eae 504 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 505
506 err = count;
507
222f1806
LC		 508out:
509 return err;
1da177e4
LT		 510}
511
d50a6b56
SH		 512static int pgctrl_open(struct inode *inode, struct file *file)
513{
d9dda78b 514 return single_open(file, pgctrl_show, PDE_DATA(inode));
d50a6b56
SH		 515}
516
9a32144e 517static const struct file_operations pktgen_fops = {
222f1806
LC		 518 .owner = THIS_MODULE,
519 .open = pgctrl_open,
520 .read = seq_read,
521 .llseek = seq_lseek,
522 .write = pgctrl_write,
523 .release = single_release,
d50a6b56
SH		 524};
525
526static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 527{
648fda74 528 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 529 ktime_t stopped;
530 u64 idle;
222f1806
LC		 531
532 seq_printf(seq,
533 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
534 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
535 pkt_dev->max_pkt_size);
536
537 seq_printf(seq,
fd29cf72
SH		 538 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
539 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 540 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 541
542 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
543 pkt_dev->lflow);
544
45b270f8
RO		 545 seq_printf(seq,
546 " queue_map_min: %u queue_map_max: %u\n",
547 pkt_dev->queue_map_min,
548 pkt_dev->queue_map_max);
549
9e50e3ac
JF		 550 if (pkt_dev->skb_priority)
551 seq_printf(seq, " skb_priority: %u\n",
552 pkt_dev->skb_priority);
553
222f1806 554 if (pkt_dev->flags & F_IPV6) {
222f1806 555 seq_printf(seq,
47a0200d
AD		 556 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
557 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
558 &pkt_dev->in6_saddr,
559 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
560 &pkt_dev->in6_daddr,
561 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 562 } else {
563 seq_printf(seq,
564 " dst_min: %s dst_max: %s\n",
565 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 566 seq_printf(seq,
63adc6fb
SH		 567 " src_min: %s src_max: %s\n",
568 pkt_dev->src_min, pkt_dev->src_max);
569 }
1da177e4 570
222f1806 571 seq_puts(seq, " src_mac: ");
1da177e4 572
e174961c
JB		 573 seq_printf(seq, "%pM ",
574 is_zero_ether_addr(pkt_dev->src_mac) ?
575 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 576
577 seq_printf(seq, "dst_mac: ");
e174961c 578 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 579
580 seq_printf(seq,
63adc6fb
SH		 581 " udp_src_min: %d udp_src_max: %d"
582 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 583 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
584 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
585
586 seq_printf(seq,
ca6549af 587 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 588 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 589
ca6549af 590 if (pkt_dev->nr_labels) {
95c96174 591 unsigned int i;
ca6549af 592 seq_printf(seq, " mpls: ");
e71a4783 593 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 594 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
595 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
596 }
597
63adc6fb 598 if (pkt_dev->vlan_id != 0xffff)
34954ddc 599 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 600 pkt_dev->vlan_id, pkt_dev->vlan_p,
601 pkt_dev->vlan_cfi);
34954ddc 602
63adc6fb 603 if (pkt_dev->svlan_id != 0xffff)
34954ddc 604 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 605 pkt_dev->svlan_id, pkt_dev->svlan_p,
606 pkt_dev->svlan_cfi);
34954ddc 607
63adc6fb 608 if (pkt_dev->tos)
1ca7768c 609 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 610
63adc6fb 611 if (pkt_dev->traffic_class)
1ca7768c 612 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 613
e99b99b4
RO		 614 if (pkt_dev->node >= 0)
615 seq_printf(seq, " node: %d\n", pkt_dev->node);
616
ca6549af
SW		 617 seq_printf(seq, " Flags: ");
618
222f1806
LC		 619 if (pkt_dev->flags & F_IPV6)
620 seq_printf(seq, "IPV6 ");
1da177e4 621
222f1806
LC		 622 if (pkt_dev->flags & F_IPSRC_RND)
623 seq_printf(seq, "IPSRC_RND ");
1da177e4 624
222f1806
LC		 625 if (pkt_dev->flags & F_IPDST_RND)
626 seq_printf(seq, "IPDST_RND ");
1da177e4 627
222f1806
LC		 628 if (pkt_dev->flags & F_TXSIZE_RND)
629 seq_printf(seq, "TXSIZE_RND ");
1da177e4 630
222f1806
LC		 631 if (pkt_dev->flags & F_UDPSRC_RND)
632 seq_printf(seq, "UDPSRC_RND ");
1da177e4 633
222f1806
LC		 634 if (pkt_dev->flags & F_UDPDST_RND)
635 seq_printf(seq, "UDPDST_RND ");
1da177e4 636
c26bf4a5
TG		 637 if (pkt_dev->flags & F_UDPCSUM)
638 seq_printf(seq, "UDPCSUM ");
639
ca6549af
SW		 640 if (pkt_dev->flags & F_MPLS_RND)
641 seq_printf(seq, "MPLS_RND ");
642
45b270f8
RO		 643 if (pkt_dev->flags & F_QUEUE_MAP_RND)
644 seq_printf(seq, "QUEUE_MAP_RND ");
645
e6fce5b9
RO		 646 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
647 seq_printf(seq, "QUEUE_MAP_CPU ");
648
007a531b
JHS		 649 if (pkt_dev->cflows) {
650 if (pkt_dev->flags & F_FLOW_SEQ)
651 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
652 else
653 seq_printf(seq, "FLOW_RND ");
654 }
655
a553e4a6
JHS		 656#ifdef CONFIG_XFRM
657 if (pkt_dev->flags & F_IPSEC_ON)
658 seq_printf(seq, "IPSEC ");
659#endif
660
222f1806
LC		 661 if (pkt_dev->flags & F_MACSRC_RND)
662 seq_printf(seq, "MACSRC_RND ");
1da177e4 663
222f1806
LC		 664 if (pkt_dev->flags & F_MACDST_RND)
665 seq_printf(seq, "MACDST_RND ");
1da177e4 666
34954ddc
FF		 667 if (pkt_dev->flags & F_VID_RND)
668 seq_printf(seq, "VID_RND ");
669
670 if (pkt_dev->flags & F_SVID_RND)
671 seq_printf(seq, "SVID_RND ");
672
e99b99b4
RO		 673 if (pkt_dev->flags & F_NODE)
674 seq_printf(seq, "NODE_ALLOC ");
675
222f1806
LC		 676 seq_puts(seq, "\n");
677
fd29cf72 678 /* not really stopped, more like last-running-at */
398f382c 679 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 680 idle = pkt_dev->idle_acc;
681 do_div(idle, NSEC_PER_USEC);
1da177e4 682
222f1806 683 seq_printf(seq,
fd29cf72 684 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 685 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 686 (unsigned long long)pkt_dev->errors);
687
688 seq_printf(seq,
689 " started: %lluus stopped: %lluus idle: %lluus\n",
690 (unsigned long long) ktime_to_us(pkt_dev->started_at),
691 (unsigned long long) ktime_to_us(stopped),
692 (unsigned long long) idle);
1da177e4 693
222f1806
LC		 694 seq_printf(seq,
695 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 696 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
697 pkt_dev->cur_src_mac_offset);
1da177e4 698
222f1806 699 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 700 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
701 &pkt_dev->cur_in6_saddr,
702 &pkt_dev->cur_in6_daddr);
222f1806 703 } else
0373a946
AW		 704 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
705 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 706
222f1806 707 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 708 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 709
45b270f8
RO		 710 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
711
222f1806 712 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 713
714 if (pkt_dev->result[0])
222f1806 715 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 716 else
222f1806 717 seq_printf(seq, "Result: Idle\n");
1da177e4 718
d50a6b56 719 return 0;
1da177e4
LT		 720}
721
ca6549af 722
63adc6fb
SH		 723static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
724 __u32 *num)
ca6549af
SW		 725{
726 int i = 0;
727 *num = 0;
728
e71a4783 729 for (; i < maxlen; i++) {
82fd5b5d 730 int value;
ca6549af
SW		 731 char c;
732 *num <<= 4;
733 if (get_user(c, &user_buffer[i]))
734 return -EFAULT;
82fd5b5d
AS		 735 value = hex_to_bin(c);
736 if (value >= 0)
737 *num |= value;
ca6549af
SW		 738 else
739 break;
740 }
741 return i;
742}
743
222f1806
LC		 744static int count_trail_chars(const char __user * user_buffer,
745 unsigned int maxlen)
1da177e4
LT		 746{
747 int i;
748
749 for (i = 0; i < maxlen; i++) {
222f1806
LC		 750 char c;
751 if (get_user(c, &user_buffer[i]))
752 return -EFAULT;
753 switch (c) {
1da177e4
LT		 754 case '\"':
755 case '\n':
756 case '\r':
757 case '\t':
758 case ' ':
759 case '=':
760 break;
761 default:
762 goto done;
3ff50b79 763 }
1da177e4
LT		 764 }
765done:
766 return i;
767}
768
bf0813bd
PG		 769static long num_arg(const char __user *user_buffer, unsigned long maxlen,
770 unsigned long *num)
1da177e4 771{
d6182223 772 int i;
1da177e4 773 *num = 0;
222f1806 774
d6182223 775 for (i = 0; i < maxlen; i++) {
222f1806
LC		 776 char c;
777 if (get_user(c, &user_buffer[i]))
778 return -EFAULT;
779 if ((c >= '0') && (c <= '9')) {
1da177e4 780 *num *= 10;
222f1806 781 *num += c - '0';
1da177e4
LT		 782 } else
783 break;
784 }
785 return i;
786}
787
222f1806 788static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 789{
d6182223 790 int i;
1da177e4 791
d6182223 792 for (i = 0; i < maxlen; i++) {
222f1806
LC		 793 char c;
794 if (get_user(c, &user_buffer[i]))
795 return -EFAULT;
796 switch (c) {
1da177e4
LT		 797 case '\"':
798 case '\n':
799 case '\r':
800 case '\t':
801 case ' ':
802 goto done_str;
803 break;
804 default:
805 break;
3ff50b79 806 }
1da177e4
LT		 807 }
808done_str:
1da177e4
LT		 809 return i;
810}
811
ca6549af
SW		 812static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
813{
95c96174 814 unsigned int n = 0;
ca6549af
SW		 815 char c;
816 ssize_t i = 0;
817 int len;
818
819 pkt_dev->nr_labels = 0;
820 do {
821 __u32 tmp;
1ca7768c 822 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 823 if (len <= 0)
824 return len;
825 pkt_dev->labels[n] = htonl(tmp);
826 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
827 pkt_dev->flags |= F_MPLS_RND;
828 i += len;
829 if (get_user(c, &buffer[i]))
830 return -EFAULT;
831 i++;
832 n++;
833 if (n >= MAX_MPLS_LABELS)
834 return -E2BIG;
e71a4783 835 } while (c == ',');
ca6549af
SW		 836
837 pkt_dev->nr_labels = n;
838 return i;
839}
840
222f1806
LC		 841static ssize_t pktgen_if_write(struct file *file,
842 const char __user * user_buffer, size_t count,
843 loff_t * offset)
1da177e4 844{
8a994a71 845 struct seq_file *seq = file->private_data;
222f1806 846 struct pktgen_dev *pkt_dev = seq->private;
d6182223 847 int i, max, len;
1da177e4
LT		 848 char name[16], valstr[32];
849 unsigned long value = 0;
222f1806
LC		 850 char *pg_result = NULL;
851 int tmp = 0;
1da177e4 852 char buf[128];
222f1806
LC		 853
854 pg_result = &(pkt_dev->result[0]);
855
1da177e4 856 if (count < 1) {
f9467eae 857 pr_warning("wrong command format\n");
1da177e4
LT		 858 return -EINVAL;
859 }
222f1806 860
d6182223
PG		 861 max = count;
862 tmp = count_trail_chars(user_buffer, max);
222f1806 863 if (tmp < 0) {
f9467eae 864 pr_warning("illegal format\n");
222f1806 865 return tmp;
1da177e4 866 }
d6182223 867 i = tmp;
222f1806 868
1da177e4
LT		 869 /* Read variable name */
870
871 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 872 if (len < 0)
222f1806 873 return len;
63adc6fb 874
1da177e4 875 memset(name, 0, sizeof(name));
222f1806 876 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 877 return -EFAULT;
878 i += len;
222f1806
LC		 879
880 max = count - i;
1da177e4 881 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 882 if (len < 0)
883 return len;
884
1da177e4
LT		 885 i += len;
886
887 if (debug) {
86c2c0a8 888 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 889 char tb[copy + 1];
890 if (copy_from_user(tb, user_buffer, copy))
1da177e4 891 return -EFAULT;
448d7b5d 892 tb[copy] = 0;
f342cda7
JP		 893 pr_debug("%s,%lu buffer -:%s:-\n",
894 name, (unsigned long)count, tb);
222f1806 895 }
1da177e4
LT		 896
897 if (!strcmp(name, "min_pkt_size")) {
898 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 899 if (len < 0)
222f1806 900 return len;
63adc6fb 901
1da177e4 902 i += len;
222f1806
LC		 903 if (value < 14 + 20 + 8)
904 value = 14 + 20 + 8;
905 if (value != pkt_dev->min_pkt_size) {
906 pkt_dev->min_pkt_size = value;
907 pkt_dev->cur_pkt_size = value;
908 }
909 sprintf(pg_result, "OK: min_pkt_size=%u",
910 pkt_dev->min_pkt_size);
1da177e4
LT		 911 return count;
912 }
913
222f1806 914 if (!strcmp(name, "max_pkt_size")) {
1da177e4 915 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 916 if (len < 0)
222f1806 917 return len;
63adc6fb 918
1da177e4 919 i += len;
222f1806
LC		 920 if (value < 14 + 20 + 8)
921 value = 14 + 20 + 8;
922 if (value != pkt_dev->max_pkt_size) {
923 pkt_dev->max_pkt_size = value;
924 pkt_dev->cur_pkt_size = value;
925 }
926 sprintf(pg_result, "OK: max_pkt_size=%u",
927 pkt_dev->max_pkt_size);
1da177e4
LT		 928 return count;
929 }
930
222f1806 931 /* Shortcut for min = max */
1da177e4
LT		 932
933 if (!strcmp(name, "pkt_size")) {
934 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 935 if (len < 0)
222f1806 936 return len;
63adc6fb 937
1da177e4 938 i += len;
222f1806
LC		 939 if (value < 14 + 20 + 8)
940 value = 14 + 20 + 8;
941 if (value != pkt_dev->min_pkt_size) {
942 pkt_dev->min_pkt_size = value;
943 pkt_dev->max_pkt_size = value;
944 pkt_dev->cur_pkt_size = value;
945 }
1da177e4
LT		 946 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
947 return count;
948 }
949
222f1806 950 if (!strcmp(name, "debug")) {
1da177e4 951 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 952 if (len < 0)
222f1806 953 return len;
63adc6fb 954
1da177e4 955 i += len;
222f1806 956 debug = value;
1da177e4
LT		 957 sprintf(pg_result, "OK: debug=%u", debug);
958 return count;
959 }
960
222f1806 961 if (!strcmp(name, "frags")) {
1da177e4 962 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 963 if (len < 0)
222f1806 964 return len;
63adc6fb 965
1da177e4
LT		 966 i += len;
967 pkt_dev->nfrags = value;
968 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
969 return count;
970 }
971 if (!strcmp(name, "delay")) {
972 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 973 if (len < 0)
222f1806 974 return len;
63adc6fb 975
1da177e4 976 i += len;
fd29cf72
SH		 977 if (value == 0x7FFFFFFF)
978 pkt_dev->delay = ULLONG_MAX;
979 else
9240d715 980 pkt_dev->delay = (u64)value;
fd29cf72
SH		 981
982 sprintf(pg_result, "OK: delay=%llu",
983 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 984 return count;
985 }
43d28b65
DT		 986 if (!strcmp(name, "rate")) {
987 len = num_arg(&user_buffer[i], 10, &value);
988 if (len < 0)
989 return len;
990
991 i += len;
992 if (!value)
993 return len;
994 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
995 if (debug)
f9467eae 996 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 997
998 sprintf(pg_result, "OK: rate=%lu", value);
999 return count;
1000 }
1001 if (!strcmp(name, "ratep")) {
1002 len = num_arg(&user_buffer[i], 10, &value);
1003 if (len < 0)
1004 return len;
1005
1006 i += len;
1007 if (!value)
1008 return len;
1009 pkt_dev->delay = NSEC_PER_SEC/value;
1010 if (debug)
f9467eae 1011 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1012
1013 sprintf(pg_result, "OK: rate=%lu", value);
1014 return count;
1015 }
222f1806 1016 if (!strcmp(name, "udp_src_min")) {
1da177e4 1017 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1018 if (len < 0)
222f1806 1019 return len;
63adc6fb 1020
1da177e4 1021 i += len;
222f1806
LC		 1022 if (value != pkt_dev->udp_src_min) {
1023 pkt_dev->udp_src_min = value;
1024 pkt_dev->cur_udp_src = value;
1025 }
1da177e4
LT		 1026 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1027 return count;
1028 }
222f1806 1029 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1030 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1031 if (len < 0)
222f1806 1032 return len;
63adc6fb 1033
1da177e4 1034 i += len;
222f1806
LC		 1035 if (value != pkt_dev->udp_dst_min) {
1036 pkt_dev->udp_dst_min = value;
1037 pkt_dev->cur_udp_dst = value;
1038 }
1da177e4
LT		 1039 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1040 return count;
1041 }
222f1806 1042 if (!strcmp(name, "udp_src_max")) {
1da177e4 1043 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1044 if (len < 0)
222f1806 1045 return len;
63adc6fb 1046
1da177e4 1047 i += len;
222f1806
LC		 1048 if (value != pkt_dev->udp_src_max) {
1049 pkt_dev->udp_src_max = value;
1050 pkt_dev->cur_udp_src = value;
1051 }
1da177e4
LT		 1052 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1053 return count;
1054 }
222f1806 1055 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1056 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1057 if (len < 0)
222f1806 1058 return len;
63adc6fb 1059
1da177e4 1060 i += len;
222f1806
LC		 1061 if (value != pkt_dev->udp_dst_max) {
1062 pkt_dev->udp_dst_max = value;
1063 pkt_dev->cur_udp_dst = value;
1064 }
1da177e4
LT		 1065 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1066 return count;
1067 }
1068 if (!strcmp(name, "clone_skb")) {
1069 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1070 if (len < 0)
222f1806 1071 return len;
d8873315
NH		 1072 if ((value > 0) &&
1073 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1074 return -ENOTSUPP;
1da177e4 1075 i += len;
222f1806
LC		 1076 pkt_dev->clone_skb = value;
1077
1da177e4
LT		 1078 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1079 return count;
1080 }
1081 if (!strcmp(name, "count")) {
1082 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1083 if (len < 0)
222f1806 1084 return len;
63adc6fb 1085
1da177e4
LT		 1086 i += len;
1087 pkt_dev->count = value;
1088 sprintf(pg_result, "OK: count=%llu",
222f1806 1089 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1090 return count;
1091 }
1092 if (!strcmp(name, "src_mac_count")) {
1093 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1094 if (len < 0)
222f1806 1095 return len;
63adc6fb 1096
1da177e4
LT		 1097 i += len;
1098 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1099 pkt_dev->src_mac_count = value;
1100 pkt_dev->cur_src_mac_offset = 0;
1101 }
1102 sprintf(pg_result, "OK: src_mac_count=%d",
1103 pkt_dev->src_mac_count);
1da177e4
LT		 1104 return count;
1105 }
1106 if (!strcmp(name, "dst_mac_count")) {
1107 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1108 if (len < 0)
222f1806 1109 return len;
63adc6fb 1110
1da177e4
LT		 1111 i += len;
1112 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1113 pkt_dev->dst_mac_count = value;
1114 pkt_dev->cur_dst_mac_offset = 0;
1115 }
1116 sprintf(pg_result, "OK: dst_mac_count=%d",
1117 pkt_dev->dst_mac_count);
1da177e4
LT		 1118 return count;
1119 }
e99b99b4
RO		 1120 if (!strcmp(name, "node")) {
1121 len = num_arg(&user_buffer[i], 10, &value);
1122 if (len < 0)
1123 return len;
1124
1125 i += len;
1126
1127 if (node_possible(value)) {
1128 pkt_dev->node = value;
1129 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1130 if (pkt_dev->page) {
1131 put_page(pkt_dev->page);
1132 pkt_dev->page = NULL;
1133 }
e99b99b4
RO		 1134 }
1135 else
1136 sprintf(pg_result, "ERROR: node not possible");
1137 return count;
1138 }
1da177e4 1139 if (!strcmp(name, "flag")) {
222f1806
LC		 1140 char f[32];
1141 memset(f, 0, 32);
1da177e4 1142 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1143 if (len < 0)
222f1806 1144 return len;
63adc6fb 1145
1da177e4
LT		 1146 if (copy_from_user(f, &user_buffer[i], len))
1147 return -EFAULT;
1148 i += len;
222f1806
LC		 1149 if (strcmp(f, "IPSRC_RND") == 0)
1150 pkt_dev->flags |= F_IPSRC_RND;
1151
1152 else if (strcmp(f, "!IPSRC_RND") == 0)
1153 pkt_dev->flags &= ~F_IPSRC_RND;
1154
1155 else if (strcmp(f, "TXSIZE_RND") == 0)
1156 pkt_dev->flags |= F_TXSIZE_RND;
1157
1158 else if (strcmp(f, "!TXSIZE_RND") == 0)
1159 pkt_dev->flags &= ~F_TXSIZE_RND;
1160
1161 else if (strcmp(f, "IPDST_RND") == 0)
1162 pkt_dev->flags |= F_IPDST_RND;
1163
1164 else if (strcmp(f, "!IPDST_RND") == 0)
1165 pkt_dev->flags &= ~F_IPDST_RND;
1166
1167 else if (strcmp(f, "UDPSRC_RND") == 0)
1168 pkt_dev->flags |= F_UDPSRC_RND;
1169
1170 else if (strcmp(f, "!UDPSRC_RND") == 0)
1171 pkt_dev->flags &= ~F_UDPSRC_RND;
1172
1173 else if (strcmp(f, "UDPDST_RND") == 0)
1174 pkt_dev->flags |= F_UDPDST_RND;
1175
1176 else if (strcmp(f, "!UDPDST_RND") == 0)
1177 pkt_dev->flags &= ~F_UDPDST_RND;
1178
1179 else if (strcmp(f, "MACSRC_RND") == 0)
1180 pkt_dev->flags |= F_MACSRC_RND;
1181
1182 else if (strcmp(f, "!MACSRC_RND") == 0)
1183 pkt_dev->flags &= ~F_MACSRC_RND;
1184
1185 else if (strcmp(f, "MACDST_RND") == 0)
1186 pkt_dev->flags |= F_MACDST_RND;
1187
1188 else if (strcmp(f, "!MACDST_RND") == 0)
1189 pkt_dev->flags &= ~F_MACDST_RND;
1190
ca6549af
SW		 1191 else if (strcmp(f, "MPLS_RND") == 0)
1192 pkt_dev->flags |= F_MPLS_RND;
1193
1194 else if (strcmp(f, "!MPLS_RND") == 0)
1195 pkt_dev->flags &= ~F_MPLS_RND;
1196
34954ddc
FF		 1197 else if (strcmp(f, "VID_RND") == 0)
1198 pkt_dev->flags |= F_VID_RND;
1199
1200 else if (strcmp(f, "!VID_RND") == 0)
1201 pkt_dev->flags &= ~F_VID_RND;
1202
1203 else if (strcmp(f, "SVID_RND") == 0)
1204 pkt_dev->flags |= F_SVID_RND;
1205
1206 else if (strcmp(f, "!SVID_RND") == 0)
1207 pkt_dev->flags &= ~F_SVID_RND;
1208
007a531b
JHS		 1209 else if (strcmp(f, "FLOW_SEQ") == 0)
1210 pkt_dev->flags |= F_FLOW_SEQ;
1211
45b270f8
RO		 1212 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1213 pkt_dev->flags |= F_QUEUE_MAP_RND;
1214
1215 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1216 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1217
1218 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1219 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1220
1221 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1222 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1223#ifdef CONFIG_XFRM
1224 else if (strcmp(f, "IPSEC") == 0)
1225 pkt_dev->flags |= F_IPSEC_ON;
1226#endif
1227
1ca7768c
FF		 1228 else if (strcmp(f, "!IPV6") == 0)
1229 pkt_dev->flags &= ~F_IPV6;
1230
e99b99b4
RO		 1231 else if (strcmp(f, "NODE_ALLOC") == 0)
1232 pkt_dev->flags |= F_NODE;
1233
1234 else if (strcmp(f, "!NODE_ALLOC") == 0)
1235 pkt_dev->flags &= ~F_NODE;
1236
c26bf4a5
TG		 1237 else if (strcmp(f, "UDPCSUM") == 0)
1238 pkt_dev->flags |= F_UDPCSUM;
1239
1240 else if (strcmp(f, "!UDPCSUM") == 0)
1241 pkt_dev->flags &= ~F_UDPCSUM;
1242
222f1806
LC		 1243 else {
1244 sprintf(pg_result,
1245 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1246 f,
1ca7768c 1247 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1248 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1249 return count;
1250 }
1da177e4
LT		 1251 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1252 return count;
1253 }
1254 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1255 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1256 if (len < 0)
222f1806 1257 return len;
1da177e4 1258
222f1806 1259 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1260 return -EFAULT;
222f1806
LC		 1261 buf[len] = 0;
1262 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1263 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1264 strncpy(pkt_dev->dst_min, buf, len);
1265 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1266 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1267 }
1268 if (debug)
f342cda7 1269 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1270 i += len;
1da177e4
LT		 1271 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1272 return count;
1273 }
1274 if (!strcmp(name, "dst_max")) {
1275 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1276 if (len < 0)
222f1806 1277 return len;
63adc6fb 1278
1da177e4 1279
222f1806 1280 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1281 return -EFAULT;
1282
222f1806
LC		 1283 buf[len] = 0;
1284 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1285 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1286 strncpy(pkt_dev->dst_max, buf, len);
1287 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1288 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1289 }
1290 if (debug)
f342cda7 1291 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1292 i += len;
1293 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1294 return count;
1295 }
1296 if (!strcmp(name, "dst6")) {
1297 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1298 if (len < 0)
1299 return len;
1da177e4
LT		 1300
1301 pkt_dev->flags |= F_IPV6;
1302
222f1806 1303 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1304 return -EFAULT;
222f1806 1305 buf[len] = 0;
1da177e4 1306
c468fb13 1307 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1308 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1309
4e3fd7a0 1310 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1311
222f1806 1312 if (debug)
f342cda7 1313 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1314
222f1806 1315 i += len;
1da177e4
LT		 1316 sprintf(pg_result, "OK: dst6=%s", buf);
1317 return count;
1318 }
1319 if (!strcmp(name, "dst6_min")) {
1320 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1321 if (len < 0)
1322 return len;
1da177e4
LT		 1323
1324 pkt_dev->flags |= F_IPV6;
1325
222f1806 1326 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1327 return -EFAULT;
222f1806 1328 buf[len] = 0;
1da177e4 1329
c468fb13 1330 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1331 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1332
4e3fd7a0 1333 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1334 if (debug)
f342cda7 1335 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1336
222f1806 1337 i += len;
1da177e4
LT		 1338 sprintf(pg_result, "OK: dst6_min=%s", buf);
1339 return count;
1340 }
1341 if (!strcmp(name, "dst6_max")) {
1342 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1343 if (len < 0)
1344 return len;
1da177e4
LT		 1345
1346 pkt_dev->flags |= F_IPV6;
1347
222f1806 1348 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1349 return -EFAULT;
222f1806 1350 buf[len] = 0;
1da177e4 1351
c468fb13 1352 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1353 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1354
222f1806 1355 if (debug)
f342cda7 1356 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1357
222f1806 1358 i += len;
1da177e4
LT		 1359 sprintf(pg_result, "OK: dst6_max=%s", buf);
1360 return count;
1361 }
1362 if (!strcmp(name, "src6")) {
1363 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1364 if (len < 0)
1365 return len;
1da177e4
LT		 1366
1367 pkt_dev->flags |= F_IPV6;
1368
222f1806 1369 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1370 return -EFAULT;
222f1806 1371 buf[len] = 0;
1da177e4 1372
c468fb13 1373 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1374 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1375
4e3fd7a0 1376 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1377
222f1806 1378 if (debug)
f342cda7 1379 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1380
1381 i += len;
1da177e4
LT		 1382 sprintf(pg_result, "OK: src6=%s", buf);
1383 return count;
1384 }
1385 if (!strcmp(name, "src_min")) {
1386 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1387 if (len < 0)
222f1806 1388 return len;
63adc6fb 1389
222f1806 1390 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1391 return -EFAULT;
222f1806
LC		 1392 buf[len] = 0;
1393 if (strcmp(buf, pkt_dev->src_min) != 0) {
1394 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1395 strncpy(pkt_dev->src_min, buf, len);
1396 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1397 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1398 }
1399 if (debug)
f342cda7 1400 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1401 i += len;
1402 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1403 return count;
1404 }
1405 if (!strcmp(name, "src_max")) {
1406 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1407 if (len < 0)
222f1806 1408 return len;
63adc6fb 1409
222f1806 1410 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1411 return -EFAULT;
222f1806
LC		 1412 buf[len] = 0;
1413 if (strcmp(buf, pkt_dev->src_max) != 0) {
1414 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1415 strncpy(pkt_dev->src_max, buf, len);
1416 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1417 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1418 }
1419 if (debug)
f342cda7 1420 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1421 i += len;
1422 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1423 return count;
1424 }
1425 if (!strcmp(name, "dst_mac")) {
1da177e4 1426 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1427 if (len < 0)
222f1806 1428 return len;
63adc6fb 1429
1da177e4 1430 memset(valstr, 0, sizeof(valstr));
222f1806 1431 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1432 return -EFAULT;
1da177e4 1433
4940fc88
AD		 1434 if (!mac_pton(valstr, pkt_dev->dst_mac))
1435 return -EINVAL;
1da177e4 1436 /* Set up Dest MAC */
4940fc88 1437 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1438
4940fc88 1439 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1440 return count;
1441 }
1442 if (!strcmp(name, "src_mac")) {
1da177e4 1443 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1444 if (len < 0)
222f1806 1445 return len;
63adc6fb 1446
1da177e4 1447 memset(valstr, 0, sizeof(valstr));
222f1806 1448 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1449 return -EFAULT;
1da177e4 1450
4940fc88
AD		 1451 if (!mac_pton(valstr, pkt_dev->src_mac))
1452 return -EINVAL;
ce5d0b47 1453 /* Set up Src MAC */
4940fc88 1454 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1455
4940fc88 1456 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1457 return count;
1458 }
1459
222f1806
LC		 1460 if (!strcmp(name, "clear_counters")) {
1461 pktgen_clear_counters(pkt_dev);
1462 sprintf(pg_result, "OK: Clearing counters.\n");
1463 return count;
1464 }
1da177e4
LT		 1465
1466 if (!strcmp(name, "flows")) {
1467 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1468 if (len < 0)
222f1806 1469 return len;
63adc6fb 1470
1da177e4
LT		 1471 i += len;
1472 if (value > MAX_CFLOWS)
1473 value = MAX_CFLOWS;
1474
1475 pkt_dev->cflows = value;
1476 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1477 return count;
1478 }
1479
1480 if (!strcmp(name, "flowlen")) {
1481 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1482 if (len < 0)
222f1806 1483 return len;
63adc6fb 1484
1da177e4
LT		 1485 i += len;
1486 pkt_dev->lflow = value;
1487 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1488 return count;
1489 }
222f1806 1490
45b270f8
RO		 1491 if (!strcmp(name, "queue_map_min")) {
1492 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1493 if (len < 0)
45b270f8 1494 return len;
63adc6fb 1495
45b270f8
RO		 1496 i += len;
1497 pkt_dev->queue_map_min = value;
1498 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1499 return count;
1500 }
1501
1502 if (!strcmp(name, "queue_map_max")) {
1503 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1504 if (len < 0)
45b270f8 1505 return len;
63adc6fb 1506
45b270f8
RO		 1507 i += len;
1508 pkt_dev->queue_map_max = value;
1509 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1510 return count;
1511 }
1512
ca6549af 1513 if (!strcmp(name, "mpls")) {
95c96174 1514 unsigned int n, cnt;
cfcabdcc 1515
ca6549af 1516 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1517 if (len < 0)
1518 return len;
ca6549af 1519 i += len;
cfcabdcc 1520 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1521 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1522 cnt += sprintf(pg_result + cnt,
1523 "%08x%s", ntohl(pkt_dev->labels[n]),
1524 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1525
1526 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1527 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1528 pkt_dev->svlan_id = 0xffff;
1529
1530 if (debug)
f342cda7 1531 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1532 }
1533 return count;
1534 }
1535
1536 if (!strcmp(name, "vlan_id")) {
1537 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1538 if (len < 0)
34954ddc 1539 return len;
63adc6fb 1540
34954ddc
FF		 1541 i += len;
1542 if (value <= 4095) {
1543 pkt_dev->vlan_id = value; /* turn on VLAN */
1544
1545 if (debug)
f342cda7 1546 pr_debug("VLAN turned on\n");
34954ddc
FF		 1547
1548 if (debug && pkt_dev->nr_labels)
f342cda7 1549 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1550
1551 pkt_dev->nr_labels = 0; /* turn off MPLS */
1552 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1553 } else {
1554 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1555 pkt_dev->svlan_id = 0xffff;
1556
1557 if (debug)
f342cda7 1558 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1559 }
1560 return count;
1561 }
1562
1563 if (!strcmp(name, "vlan_p")) {
1564 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1565 if (len < 0)
34954ddc 1566 return len;
63adc6fb 1567
34954ddc
FF		 1568 i += len;
1569 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1570 pkt_dev->vlan_p = value;
1571 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1572 } else {
1573 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1574 }
1575 return count;
1576 }
1577
1578 if (!strcmp(name, "vlan_cfi")) {
1579 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1580 if (len < 0)
34954ddc 1581 return len;
63adc6fb 1582
34954ddc
FF		 1583 i += len;
1584 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1585 pkt_dev->vlan_cfi = value;
1586 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1587 } else {
1588 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1589 }
1590 return count;
1591 }
1592
1593 if (!strcmp(name, "svlan_id")) {
1594 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1595 if (len < 0)
34954ddc 1596 return len;
63adc6fb 1597
34954ddc
FF		 1598 i += len;
1599 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1600 pkt_dev->svlan_id = value; /* turn on SVLAN */
1601
1602 if (debug)
f342cda7 1603 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1604
1605 if (debug && pkt_dev->nr_labels)
f342cda7 1606 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1607
1608 pkt_dev->nr_labels = 0; /* turn off MPLS */
1609 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1610 } else {
1611 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1612 pkt_dev->svlan_id = 0xffff;
1613
1614 if (debug)
f342cda7 1615 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1616 }
1617 return count;
1618 }
1619
1620 if (!strcmp(name, "svlan_p")) {
1621 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1622 if (len < 0)
34954ddc 1623 return len;
63adc6fb 1624
34954ddc
FF		 1625 i += len;
1626 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1627 pkt_dev->svlan_p = value;
1628 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1629 } else {
1630 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1631 }
1632 return count;
1633 }
1634
1635 if (!strcmp(name, "svlan_cfi")) {
1636 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1637 if (len < 0)
34954ddc 1638 return len;
63adc6fb 1639
34954ddc
FF		 1640 i += len;
1641 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1642 pkt_dev->svlan_cfi = value;
1643 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1644 } else {
1645 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1646 }
ca6549af
SW		 1647 return count;
1648 }
1649
1ca7768c
FF		 1650 if (!strcmp(name, "tos")) {
1651 __u32 tmp_value = 0;
1652 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1653 if (len < 0)
1ca7768c 1654 return len;
63adc6fb 1655
1ca7768c
FF		 1656 i += len;
1657 if (len == 2) {
1658 pkt_dev->tos = tmp_value;
1659 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1660 } else {
1661 sprintf(pg_result, "ERROR: tos must be 00-ff");
1662 }
1663 return count;
1664 }
1665
1666 if (!strcmp(name, "traffic_class")) {
1667 __u32 tmp_value = 0;
1668 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1669 if (len < 0)
1ca7768c 1670 return len;
63adc6fb 1671
1ca7768c
FF		 1672 i += len;
1673 if (len == 2) {
1674 pkt_dev->traffic_class = tmp_value;
1675 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1676 } else {
1677 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1678 }
1679 return count;
1680 }
1681
9e50e3ac
JF		 1682 if (!strcmp(name, "skb_priority")) {
1683 len = num_arg(&user_buffer[i], 9, &value);
1684 if (len < 0)
1685 return len;
1686
1687 i += len;
1688 pkt_dev->skb_priority = value;
1689 sprintf(pg_result, "OK: skb_priority=%i",
1690 pkt_dev->skb_priority);
1691 return count;
1692 }
1693
1da177e4
LT		 1694 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1695 return -EINVAL;
1696}
1697
d50a6b56 1698static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1699{
d9dda78b 1700 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1701}
1da177e4 1702
9a32144e 1703static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1704 .owner = THIS_MODULE,
1705 .open = pktgen_if_open,
1706 .read = seq_read,
1707 .llseek = seq_lseek,
1708 .write = pktgen_if_write,
1709 .release = single_release,
d50a6b56 1710};
1da177e4 1711
d50a6b56
SH		 1712static int pktgen_thread_show(struct seq_file *seq, void *v)
1713{
222f1806 1714 struct pktgen_thread *t = seq->private;
648fda74 1715 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1716
1717 BUG_ON(!t);
1da177e4 1718
222f1806 1719 seq_printf(seq, "Running: ");
1da177e4 1720
222f1806 1721 if_lock(t);
c26a8016 1722 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1723 if (pkt_dev->running)
593f63b0 1724 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1725
222f1806
LC		 1726 seq_printf(seq, "\nStopped: ");
1727
c26a8016 1728 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1729 if (!pkt_dev->running)
593f63b0 1730 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1731
1732 if (t->result[0])
d50a6b56 1733 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1734 else
d50a6b56 1735 seq_printf(seq, "\nResult: NA\n");
1da177e4 1736
222f1806 1737 if_unlock(t);
1da177e4 1738
d50a6b56 1739 return 0;
1da177e4
LT		 1740}
1741
d50a6b56 1742static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1743 const char __user * user_buffer,
1744 size_t count, loff_t * offset)
1da177e4 1745{
8a994a71 1746 struct seq_file *seq = file->private_data;
222f1806 1747 struct pktgen_thread *t = seq->private;
d6182223 1748 int i, max, len, ret;
1da177e4 1749 char name[40];
222f1806 1750 char *pg_result;
d50a6b56 1751
1da177e4 1752 if (count < 1) {
222f1806 1753 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1754 return -EINVAL;
1755 }
d50a6b56 1756
d6182223
PG		 1757 max = count;
1758 len = count_trail_chars(user_buffer, max);
222f1806 1759 if (len < 0)
d50a6b56
SH		 1760 return len;
1761
d6182223 1762 i = len;
d50a6b56 1763
1da177e4
LT		 1764 /* Read variable name */
1765
1766 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1767 if (len < 0)
d50a6b56 1768 return len;
222f1806 1769
1da177e4
LT		 1770 memset(name, 0, sizeof(name));
1771 if (copy_from_user(name, &user_buffer[i], len))
1772 return -EFAULT;
1773 i += len;
d50a6b56 1774
222f1806 1775 max = count - i;
1da177e4 1776 len = count_trail_chars(&user_buffer[i], max);
222f1806 1777 if (len < 0)
d50a6b56
SH		 1778 return len;
1779
1da177e4
LT		 1780 i += len;
1781
d50a6b56 1782 if (debug)
f342cda7 1783 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1784
222f1806 1785 if (!t) {
f9467eae 1786 pr_err("ERROR: No thread\n");
1da177e4
LT		 1787 ret = -EINVAL;
1788 goto out;
1789 }
1790
1791 pg_result = &(t->result[0]);
1792
222f1806
LC		 1793 if (!strcmp(name, "add_device")) {
1794 char f[32];
1795 memset(f, 0, 32);
1da177e4 1796 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1797 if (len < 0) {
1798 ret = len;
1da177e4
LT		 1799 goto out;
1800 }
222f1806 1801 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1802 return -EFAULT;
1803 i += len;
6146e6a4 1804 mutex_lock(&pktgen_thread_lock);
604dfd6e 1805 ret = pktgen_add_device(t, f);
6146e6a4 1806 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1807 if (!ret) {
1808 ret = count;
1809 sprintf(pg_result, "OK: add_device=%s", f);
1810 } else
1811 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1812 goto out;
1813 }
1814
222f1806 1815 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1816 mutex_lock(&pktgen_thread_lock);
95ed63f7 1817 t->control |= T_REMDEVALL;
6146e6a4 1818 mutex_unlock(&pktgen_thread_lock);
222f1806 1819 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1820 ret = count;
222f1806 1821 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1822 goto out;
1823 }
1824
222f1806 1825 if (!strcmp(name, "max_before_softirq")) {
b163911f 1826 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1827 ret = count;
1da177e4
LT		 1828 goto out;
1829 }
1830
1831 ret = -EINVAL;
222f1806 1832out:
1da177e4
LT		 1833 return ret;
1834}
1835
d50a6b56 1836static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1837{
d9dda78b 1838 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT		 1839}
1840
9a32144e 1841static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1842 .owner = THIS_MODULE,
1843 .open = pktgen_thread_open,
1844 .read = seq_read,
1845 .llseek = seq_lseek,
1846 .write = pktgen_thread_write,
1847 .release = single_release,
d50a6b56 1848};
1da177e4
LT		 1849
1850/* Think find or remove for NN */
4e58a027
CW		 1851static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1852 const char *ifname, int remove)
1da177e4
LT		 1853{
1854 struct pktgen_thread *t;
1855 struct pktgen_dev *pkt_dev = NULL;
3e984840 1856 bool exact = (remove == FIND);
1da177e4 1857
4e58a027 1858 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1859 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1860 if (pkt_dev) {
222f1806
LC		 1861 if (remove) {
1862 if_lock(t);
1863 pkt_dev->removal_mark = 1;
1864 t->control |= T_REMDEV;
1865 if_unlock(t);
1866 }
1da177e4
LT		 1867 break;
1868 }
1da177e4 1869 }
222f1806 1870 return pkt_dev;
1da177e4
LT		 1871}
1872
95ed63f7
AK		 1873/*
1874 * mark a device for removal
1875 */
4e58a027 1876static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1877{
1878 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1879 const int max_tries = 10, msec_per_try = 125;
1880 int i = 0;
95ed63f7 1881
6146e6a4 1882 mutex_lock(&pktgen_thread_lock);
f9467eae 1883 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1884
222f1806 1885 while (1) {
95ed63f7 1886
4e58a027 1887 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1888 if (pkt_dev == NULL)
1889 break; /* success */
95ed63f7 1890
6146e6a4 1891 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1892 pr_debug("%s: waiting for %s to disappear....\n",
1893 __func__, ifname);
95ed63f7 1894 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1895 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1896
1897 if (++i >= max_tries) {
f9467eae
JP		 1898 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1899 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1900 break;
1901 }
1902
1903 }
1904
6146e6a4 1905 mutex_unlock(&pktgen_thread_lock);
39df232f 1906}
95ed63f7 1907
4e58a027 1908static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 1909{
1910 struct pktgen_thread *t;
1911
4e58a027 1912 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 1913 struct pktgen_dev *pkt_dev;
1914
1915 list_for_each_entry(pkt_dev, &t->if_list, list) {
1916 if (pkt_dev->odev != dev)
1917 continue;
1918
a8ca16ea 1919 proc_remove(pkt_dev->entry);
39df232f 1920
2975315b 1921 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1922 pn->proc_dir,
2975315b
AD		 1923 &pktgen_if_fops,
1924 pkt_dev);
39df232f 1925 if (!pkt_dev->entry)
f9467eae
JP		 1926 pr_err("can't move proc entry for '%s'\n",
1927 dev->name);
39df232f
SH		 1928 break;
1929 }
1930 }
1da177e4
LT		 1931}
1932
222f1806
LC		 1933static int pktgen_device_event(struct notifier_block *unused,
1934 unsigned long event, void *ptr)
1da177e4 1935{
351638e7 1936 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 1937 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1938
4e58a027 1939 if (pn->pktgen_exiting)
e9dc8653
EB		 1940 return NOTIFY_DONE;
1941
1da177e4
LT		 1942 /* It is OK that we do not hold the group lock right now,
1943 * as we run under the RTNL lock.
1944 */
1945
1946 switch (event) {
39df232f 1947 case NETDEV_CHANGENAME:
4e58a027 1948 pktgen_change_name(pn, dev);
1da177e4 1949 break;
222f1806 1950
1da177e4 1951 case NETDEV_UNREGISTER:
4e58a027 1952 pktgen_mark_device(pn, dev->name);
1da177e4 1953 break;
3ff50b79 1954 }
1da177e4
LT		 1955
1956 return NOTIFY_DONE;
1957}
1958
4e58a027
CW		 1959static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
1960 struct pktgen_dev *pkt_dev,
63adc6fb 1961 const char *ifname)
e6fce5b9
RO		 1962{
1963 char b[IFNAMSIZ+5];
d6182223 1964 int i;
e6fce5b9 1965
63adc6fb
SH		 1966 for (i = 0; ifname[i] != '@'; i++) {
1967 if (i == IFNAMSIZ)
e6fce5b9
RO		 1968 break;
1969
1970 b[i] = ifname[i];
1971 }
1972 b[i] = 0;
1973
4e58a027 1974 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 1975}
1976
1977
1da177e4
LT		 1978/* Associate pktgen_dev with a device. */
1979
4e58a027
CW		 1980static int pktgen_setup_dev(const struct pktgen_net *pn,
1981 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1982{
1da177e4 1983 struct net_device *odev;
39df232f 1984 int err;
1da177e4
LT		 1985
1986 /* Clean old setups */
1da177e4
LT		 1987 if (pkt_dev->odev) {
1988 dev_put(pkt_dev->odev);
222f1806
LC		 1989 pkt_dev->odev = NULL;
1990 }
1da177e4 1991
4e58a027 1992 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 1993 if (!odev) {
f9467eae 1994 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1995 return -ENODEV;
1da177e4 1996 }
39df232f 1997
1da177e4 1998 if (odev->type != ARPHRD_ETHER) {
f9467eae 1999 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2000 err = -EINVAL;
2001 } else if (!netif_running(odev)) {
f9467eae 2002 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2003 err = -ENETDOWN;
2004 } else {
2005 pkt_dev->odev = odev;
2006 return 0;
1da177e4 2007 }
1da177e4 2008
1da177e4 2009 dev_put(odev);
39df232f 2010 return err;
1da177e4
LT		 2011}
2012
2013/* Read pkt_dev from the interface and set up internal pktgen_dev
2014 * structure to have the right information to create/send packets
2015 */
2016static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2017{
64c00d81
AG		 2018 int ntxq;
2019
222f1806 2020 if (!pkt_dev->odev) {
f9467eae 2021 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2022 sprintf(pkt_dev->result,
2023 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2024 return;
2025 }
2026
64c00d81
AG		 2027 /* make sure that we don't pick a non-existing transmit queue */
2028 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2029
64c00d81 2030 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2031 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2032 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2033 pkt_dev->odevname);
26e29eed 2034 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2035 }
88271660 2036 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2037 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2038 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2039 pkt_dev->odevname);
26e29eed 2040 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2041 }
2042
222f1806 2043 /* Default to the interface's mac if not explicitly set. */
1da177e4 2044
f404e9a6 2045 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2046 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2047
222f1806 2048 /* Set up Dest MAC */
f404e9a6 2049 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2050
222f1806 2051 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2052 int i, set = 0, err = 1;
2053 struct inet6_dev *idev;
2054
68bf9f0b
AW		 2055 if (pkt_dev->min_pkt_size == 0) {
2056 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2057 + sizeof(struct udphdr)
2058 + sizeof(struct pktgen_hdr)
2059 + pkt_dev->pkt_overhead;
2060 }
2061
222f1806
LC		 2062 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2063 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2064 set = 1;
2065 break;
2066 }
2067
222f1806
LC		 2068 if (!set) {
2069
1da177e4
LT		 2070 /*
2071 * Use linklevel address if unconfigured.
2072 *
2073 * use ipv6_get_lladdr if/when it's get exported
2074 */
2075
8814c4b5 2076 rcu_read_lock();
63adc6fb
SH		 2077 idev = __in6_dev_get(pkt_dev->odev);
2078 if (idev) {
1da177e4
LT		 2079 struct inet6_ifaddr *ifp;
2080
2081 read_lock_bh(&idev->lock);
4c139b8c
AW		 2082 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2083 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2084 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2085 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2086 err = 0;
2087 break;
2088 }
2089 }
2090 read_unlock_bh(&idev->lock);
2091 }
8814c4b5 2092 rcu_read_unlock();
222f1806 2093 if (err)
f9467eae 2094 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2095 }
222f1806 2096 } else {
68bf9f0b
AW		 2097 if (pkt_dev->min_pkt_size == 0) {
2098 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2099 + sizeof(struct udphdr)
2100 + sizeof(struct pktgen_hdr)
2101 + pkt_dev->pkt_overhead;
2102 }
2103
1da177e4
LT		 2104 pkt_dev->saddr_min = 0;
2105 pkt_dev->saddr_max = 0;
2106 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2107
2108 struct in_device *in_dev;
1da177e4
LT		 2109
2110 rcu_read_lock();
e5ed6399 2111 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2112 if (in_dev) {
2113 if (in_dev->ifa_list) {
222f1806
LC		 2114 pkt_dev->saddr_min =
2115 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2116 pkt_dev->saddr_max = pkt_dev->saddr_min;
2117 }
1da177e4
LT		 2118 }
2119 rcu_read_unlock();
222f1806 2120 } else {
1da177e4
LT		 2121 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2122 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2123 }
2124
2125 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2126 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2127 }
222f1806 2128 /* Initialize current values. */
68bf9f0b
AW		 2129 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2130 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2131 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2132
222f1806
LC		 2133 pkt_dev->cur_dst_mac_offset = 0;
2134 pkt_dev->cur_src_mac_offset = 0;
2135 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2136 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2137 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2138 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2139 pkt_dev->nflows = 0;
2140}
2141
fd29cf72
SH		 2142
2143static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2144{
ef87979c 2145 ktime_t start_time, end_time;
417bc4b8 2146 s64 remaining;
2bc481cf
SH		 2147 struct hrtimer_sleeper t;
2148
2149 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2150 hrtimer_set_expires(&t.timer, spin_until);
2151
43d28b65 2152 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2153 if (remaining <= 0) {
2154 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2155 return;
417bc4b8 2156 }
2bc481cf 2157
398f382c 2158 start_time = ktime_get();
33136d12
ED		 2159 if (remaining < 100000) {
2160 /* for small delays (<100us), just loop until limit is reached */
2161 do {
398f382c
DB		 2162 end_time = ktime_get();
2163 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2164 } else {
2bc481cf
SH		 2165 /* see do_nanosleep */
2166 hrtimer_init_sleeper(&t, current);
2167 do {
2168 set_current_state(TASK_INTERRUPTIBLE);
2169 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2170 if (!hrtimer_active(&t.timer))
2171 t.task = NULL;
2172
2173 if (likely(t.task))
1da177e4 2174 schedule();
1da177e4 2175
2bc481cf
SH		 2176 hrtimer_cancel(&t.timer);
2177 } while (t.task && pkt_dev->running && !signal_pending(current));
2178 __set_current_state(TASK_RUNNING);
398f382c 2179 end_time = ktime_get();
1da177e4 2180 }
ef87979c
SH		 2181
2182 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2183 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2184}
2185
16dab72f
JHS		 2186static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2187{
a553e4a6 2188 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2189 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2190 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2191 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2192}
2193
648fda74 2194static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2195{
648fda74 2196 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2197}
2198
2199static inline int f_pick(struct pktgen_dev *pkt_dev)
2200{
2201 int flow = pkt_dev->curfl;
2202
2203 if (pkt_dev->flags & F_FLOW_SEQ) {
2204 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2205 /* reset time */
2206 pkt_dev->flows[flow].count = 0;
1211a645 2207 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2208 pkt_dev->curfl += 1;
2209 if (pkt_dev->curfl >= pkt_dev->cflows)
2210 pkt_dev->curfl = 0; /*reset */
2211 }
2212 } else {
33d7c5e5 2213 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2214 pkt_dev->curfl = flow;
007a531b 2215
1211a645 2216 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2217 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2218 pkt_dev->flows[flow].flags = 0;
2219 }
007a531b
JHS		 2220 }
2221
2222 return pkt_dev->curfl;
2223}
2224
a553e4a6
JHS		 2225
2226#ifdef CONFIG_XFRM
2227/* If there was already an IPSEC SA, we keep it as is, else
2228 * we go look for it ...
2229*/
bd55775c 2230#define DUMMY_MARK 0
fea1ab0f 2231static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2232{
2233 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2234 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6
JHS		 2235 if (!x) {
2236 /*slow path: we dont already have xfrm_state*/
4e58a027 2237 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
5447c5e4 2238 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2239 (xfrm_address_t *)&pkt_dev->cur_saddr,
2240 AF_INET,
2241 pkt_dev->ipsmode,
2242 pkt_dev->ipsproto, 0);
2243 if (x) {
2244 pkt_dev->flows[flow].x = x;
2245 set_pkt_overhead(pkt_dev);
63adc6fb 2246 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2247 }
2248
2249 }
2250}
2251#endif
fd2ea0a7
DM		 2252static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2253{
e6fce5b9
RO		 2254
2255 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2256 pkt_dev->cur_queue_map = smp_processor_id();
2257
896a7cf8 2258 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2259 __u16 t;
2260 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2261 t = prandom_u32() %
fd2ea0a7
DM		 2262 (pkt_dev->queue_map_max -
2263 pkt_dev->queue_map_min + 1)
2264 + pkt_dev->queue_map_min;
2265 } else {
2266 t = pkt_dev->cur_queue_map + 1;
2267 if (t > pkt_dev->queue_map_max)
2268 t = pkt_dev->queue_map_min;
2269 }
2270 pkt_dev->cur_queue_map = t;
2271 }
bfdbc0ac 2272 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2273}
2274
1da177e4
LT		 2275/* Increment/randomize headers according to flags and current values
2276 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2277 */
222f1806
LC		 2278static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2279{
2280 __u32 imn;
2281 __u32 imx;
2282 int flow = 0;
1da177e4 2283
007a531b
JHS		 2284 if (pkt_dev->cflows)
2285 flow = f_pick(pkt_dev);
1da177e4
LT		 2286
2287 /* Deal with source MAC */
222f1806
LC		 2288 if (pkt_dev->src_mac_count > 1) {
2289 __u32 mc;
2290 __u32 tmp;
2291
2292 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2293 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2294 else {
2295 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2296 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2297 pkt_dev->src_mac_count)
2298 pkt_dev->cur_src_mac_offset = 0;
2299 }
2300
2301 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2302 pkt_dev->hh[11] = tmp;
2303 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2304 pkt_dev->hh[10] = tmp;
2305 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2306 pkt_dev->hh[9] = tmp;
2307 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2308 pkt_dev->hh[8] = tmp;
2309 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2310 pkt_dev->hh[7] = tmp;
2311 }
2312
2313 /* Deal with Destination MAC */
2314 if (pkt_dev->dst_mac_count > 1) {
2315 __u32 mc;
2316 __u32 tmp;
2317
2318 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2319 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2320
2321 else {
2322 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2323 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2324 pkt_dev->dst_mac_count) {
2325 pkt_dev->cur_dst_mac_offset = 0;
2326 }
2327 }
2328
2329 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2330 pkt_dev->hh[5] = tmp;
2331 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2332 pkt_dev->hh[4] = tmp;
2333 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2334 pkt_dev->hh[3] = tmp;
2335 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2336 pkt_dev->hh[2] = tmp;
2337 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2338 pkt_dev->hh[1] = tmp;
2339 }
2340
ca6549af 2341 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2342 unsigned int i;
e71a4783 2343 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2344 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2345 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2346 ((__force __be32)prandom_u32() &
ca6549af
SW		 2347 htonl(0x000fffff));
2348 }
2349
34954ddc 2350 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2351 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2352 }
2353
2354 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2355 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2356 }
2357
222f1806
LC		 2358 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2359 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2360 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2361 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2362 + pkt_dev->udp_src_min;
222f1806
LC		 2363
2364 else {
1da177e4
LT		 2365 pkt_dev->cur_udp_src++;
2366 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2367 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2368 }
2369 }
2370
2371 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2372 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2373 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2374 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2375 + pkt_dev->udp_dst_min;
222f1806 2376 } else {
1da177e4 2377 pkt_dev->cur_udp_dst++;
222f1806 2378 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2379 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2380 }
2381 }
1da177e4
LT		 2382
2383 if (!(pkt_dev->flags & F_IPV6)) {
2384
63adc6fb
SH		 2385 imn = ntohl(pkt_dev->saddr_min);
2386 imx = ntohl(pkt_dev->saddr_max);
2387 if (imn < imx) {
1da177e4 2388 __u32 t;
222f1806 2389 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2390 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2391 else {
2392 t = ntohl(pkt_dev->cur_saddr);
2393 t++;
63adc6fb 2394 if (t > imx)
1da177e4 2395 t = imn;
63adc6fb 2396
1da177e4
LT		 2397 }
2398 pkt_dev->cur_saddr = htonl(t);
2399 }
222f1806 2400
007a531b 2401 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2402 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2403 } else {
252e3346
AV		 2404 imn = ntohl(pkt_dev->daddr_min);
2405 imx = ntohl(pkt_dev->daddr_max);
2406 if (imn < imx) {
1da177e4 2407 __u32 t;
252e3346 2408 __be32 s;
1da177e4
LT		 2409 if (pkt_dev->flags & F_IPDST_RND) {
2410
70e3ba72 2411 do {
33d7c5e5
AM		 2412 t = prandom_u32() %
2413 (imx - imn) + imn;
252e3346 2414 s = htonl(t);
70e3ba72
AM		 2415 } while (ipv4_is_loopback(s) ||
2416 ipv4_is_multicast(s) ||
2417 ipv4_is_lbcast(s) ||
2418 ipv4_is_zeronet(s) ||
2419 ipv4_is_local_multicast(s));
252e3346
AV		 2420 pkt_dev->cur_daddr = s;
2421 } else {
1da177e4
LT		 2422 t = ntohl(pkt_dev->cur_daddr);
2423 t++;
2424 if (t > imx) {
2425 t = imn;
2426 }
2427 pkt_dev->cur_daddr = htonl(t);
2428 }
2429 }
222f1806 2430 if (pkt_dev->cflows) {
007a531b 2431 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2432 pkt_dev->flows[flow].cur_daddr =
2433 pkt_dev->cur_daddr;
a553e4a6
JHS		 2434#ifdef CONFIG_XFRM
2435 if (pkt_dev->flags & F_IPSEC_ON)
2436 get_ipsec_sa(pkt_dev, flow);
2437#endif
1da177e4
LT		 2438 pkt_dev->nflows++;
2439 }
2440 }
222f1806
LC		 2441 } else { /* IPV6 * */
2442
06e30411 2443 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2444 int i;
2445
2446 /* Only random destinations yet */
2447
222f1806 2448 for (i = 0; i < 4; i++) {
1da177e4 2449 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2450 (((__force __be32)prandom_u32() |
222f1806
LC		 2451 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2452 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2453 }
222f1806 2454 }
1da177e4
LT		 2455 }
2456
222f1806
LC		 2457 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2458 __u32 t;
2459 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2460 t = prandom_u32() %
5fa6fc76
SH		 2461 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2462 + pkt_dev->min_pkt_size;
222f1806 2463 } else {
1da177e4 2464 t = pkt_dev->cur_pkt_size + 1;
222f1806 2465 if (t > pkt_dev->max_pkt_size)
1da177e4 2466 t = pkt_dev->min_pkt_size;
222f1806
LC		 2467 }
2468 pkt_dev->cur_pkt_size = t;
2469 }
1da177e4 2470
fd2ea0a7 2471 set_cur_queue_map(pkt_dev);
45b270f8 2472
1da177e4
LT		 2473 pkt_dev->flows[flow].count++;
2474}
2475
a553e4a6
JHS		 2476
2477#ifdef CONFIG_XFRM
2478static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2479{
2480 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2481 int err = 0;
a553e4a6
JHS		 2482
2483 if (!x)
2484 return 0;
2485 /* XXX: we dont support tunnel mode for now until
2486 * we resolve the dst issue */
2487 if (x->props.mode != XFRM_MODE_TRANSPORT)
2488 return 0;
2489
2490 spin_lock(&x->lock);
a553e4a6 2491
13996378 2492 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2493 if (err)
2494 goto error;
2495 err = x->type->output(x, skb);
2496 if (err)
2497 goto error;
2498
63adc6fb 2499 x->curlft.bytes += skb->len;
a553e4a6 2500 x->curlft.packets++;
a553e4a6
JHS		 2501error:
2502 spin_unlock(&x->lock);
2503 return err;
2504}
2505
475ac1e4 2506static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2507{
2508 if (pkt_dev->cflows) {
2509 /* let go of the SAs if we have them */
d6182223
PG		 2510 int i;
2511 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2512 struct xfrm_state *x = pkt_dev->flows[i].x;
2513 if (x) {
2514 xfrm_state_put(x);
2515 pkt_dev->flows[i].x = NULL;
2516 }
2517 }
2518 }
2519}
2520
475ac1e4 2521static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2522 struct sk_buff *skb, __be16 protocol)
2523{
2524 if (pkt_dev->flags & F_IPSEC_ON) {
2525 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2526 int nhead = 0;
2527 if (x) {
2528 int ret;
2529 __u8 *eth;
3868204d 2530 struct iphdr *iph;
2531
a553e4a6 2532 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2533 if (nhead > 0) {
a553e4a6
JHS		 2534 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2535 if (ret < 0) {
f9467eae
JP		 2536 pr_err("Error expanding ipsec packet %d\n",
2537 ret);
b4bb4ac8 2538 goto err;
a553e4a6
JHS		 2539 }
2540 }
2541
2542 /* ipsec is not expecting ll header */
2543 skb_pull(skb, ETH_HLEN);
2544 ret = pktgen_output_ipsec(skb, pkt_dev);
2545 if (ret) {
f9467eae 2546 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2547 goto err;
a553e4a6
JHS		 2548 }
2549 /* restore ll */
2550 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2551 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2552 *(u16 *) &eth[12] = protocol;
3868204d 2553
2554 /* Update IPv4 header len as well as checksum value */
2555 iph = ip_hdr(skb);
2556 iph->tot_len = htons(skb->len - ETH_HLEN);
2557 ip_send_check(iph);
a553e4a6
JHS		 2558 }
2559 }
2560 return 1;
b4bb4ac8
IJ		 2561err:
2562 kfree_skb(skb);
2563 return 0;
a553e4a6
JHS		 2564}
2565#endif
2566
ca6549af
SW		 2567static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2568{
95c96174 2569 unsigned int i;
63adc6fb 2570 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2571 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2572
ca6549af
SW		 2573 mpls--;
2574 *mpls |= MPLS_STACK_BOTTOM;
2575}
2576
0f37c605
AV		 2577static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2578 unsigned int prio)
2579{
2580 return htons(id | (cfi << 12) | (prio << 13));
2581}
2582
26ad7879
ED		 2583static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2584 int datalen)
2585{
2586 struct timeval timestamp;
2587 struct pktgen_hdr *pgh;
2588
2589 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2590 datalen -= sizeof(*pgh);
2591
2592 if (pkt_dev->nfrags <= 0) {
05aebe2e 2593 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2594 } else {
2595 int frags = pkt_dev->nfrags;
2596 int i, len;
7d36a991 2597 int frag_len;
26ad7879
ED		 2598
2599
2600 if (frags > MAX_SKB_FRAGS)
2601 frags = MAX_SKB_FRAGS;
2602 len = datalen - frags * PAGE_SIZE;
2603 if (len > 0) {
2604 memset(skb_put(skb, len), 0, len);
2605 datalen = frags * PAGE_SIZE;
2606 }
2607
2608 i = 0;
7d36a991 2609 frag_len = (datalen/frags) < PAGE_SIZE ?
2610 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2611 while (datalen > 0) {
2612 if (unlikely(!pkt_dev->page)) {
2613 int node = numa_node_id();
2614
2615 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2616 node = pkt_dev->node;
2617 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2618 if (!pkt_dev->page)
2619 break;
2620 }
a0bec1cd 2621 get_page(pkt_dev->page);
ea2ab693 2622 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2623 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2624 /*last fragment, fill rest of data*/
2625 if (i == (frags - 1))
9e903e08
ED		 2626 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2627 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2628 else
9e903e08
ED		 2629 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2630 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2631 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2632 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2633 i++;
2634 skb_shinfo(skb)->nr_frags = i;
2635 }
26ad7879
ED		 2636 }
2637
2638 /* Stamp the time, and sequence number,
2639 * convert them to network byte order
2640 */
2641 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2642 pgh->seq_num = htonl(pkt_dev->seq_num);
2643
2644 do_gettimeofday(&timestamp);
2645 pgh->tv_sec = htonl(timestamp.tv_sec);
2646 pgh->tv_usec = htonl(timestamp.tv_usec);
2647}
2648
7a6e288d
DB		 2649static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2650 struct pktgen_dev *pkt_dev,
2651 unsigned int extralen)
2652{
2653 struct sk_buff *skb = NULL;
2654 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2655 pkt_dev->pkt_overhead;
2656
2657 if (pkt_dev->flags & F_NODE) {
2658 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2659
2660 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2661 if (likely(skb)) {
2662 skb_reserve(skb, NET_SKB_PAD);
2663 skb->dev = dev;
2664 }
2665 } else {
2666 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2667 }
2668
2669 return skb;
2670}
2671
222f1806
LC		 2672static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2673 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2674{
2675 struct sk_buff *skb = NULL;
2676 __u8 *eth;
2677 struct udphdr *udph;
2678 int datalen, iplen;
2679 struct iphdr *iph;
d5f1ce9a 2680 __be16 protocol = htons(ETH_P_IP);
ca6549af 2681 __be32 *mpls;
34954ddc
FF		 2682 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2683 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2684 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2685 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2686 u16 queue_map;
ca6549af
SW		 2687
2688 if (pkt_dev->nr_labels)
d5f1ce9a 2689 protocol = htons(ETH_P_MPLS_UC);
222f1806 2690
34954ddc 2691 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2692 protocol = htons(ETH_P_8021Q);
34954ddc 2693
64053bee
RO		 2694 /* Update any of the values, used when we're incrementing various
2695 * fields.
2696 */
2697 mod_cur_headers(pkt_dev);
eb589063 2698 queue_map = pkt_dev->cur_queue_map;
64053bee 2699
7ac5459e 2700 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2701
7a6e288d 2702 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT		 2703 if (!skb) {
2704 sprintf(pkt_dev->result, "No memory");
2705 return NULL;
2706 }
2707
7a6e288d 2708 prefetchw(skb->data);
7ac5459e 2709 skb_reserve(skb, datalen);
1da177e4
LT		 2710
2711 /* Reserve for ethernet and IP header */
2712 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2713 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2714 if (pkt_dev->nr_labels)
2715 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2716
2717 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2718 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2719 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2720 *svlan_tci = build_tci(pkt_dev->svlan_id,
2721 pkt_dev->svlan_cfi,
2722 pkt_dev->svlan_p);
34954ddc 2723 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2724 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2725 }
2726 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2727 *vlan_tci = build_tci(pkt_dev->vlan_id,
2728 pkt_dev->vlan_cfi,
2729 pkt_dev->vlan_p);
34954ddc 2730 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2731 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2732 }
2733
525cebed
TG		 2734 skb_set_mac_header(skb, 0);
2735 skb_set_network_header(skb, skb->len);
2736 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2737
2738 skb_set_transport_header(skb, skb->len);
2739 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2740 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2741 skb->priority = pkt_dev->skb_priority;
2742
1da177e4 2743 memcpy(eth, pkt_dev->hh, 12);
252e3346 2744 *(__be16 *) & eth[12] = protocol;
1da177e4 2745
ca6549af
SW		 2746 /* Eth + IPh + UDPh + mpls */
2747 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2748 pkt_dev->pkt_overhead;
6af773e7 2749 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2750 datalen = sizeof(struct pktgen_hdr);
222f1806 2751
1da177e4
LT		 2752 udph->source = htons(pkt_dev->cur_udp_src);
2753 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2754 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2755 udph->check = 0;
1da177e4
LT		 2756
2757 iph->ihl = 5;
2758 iph->version = 4;
2759 iph->ttl = 32;
1ca7768c 2760 iph->tos = pkt_dev->tos;
222f1806 2761 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2762 iph->saddr = pkt_dev->cur_saddr;
2763 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2764 iph->id = htons(pkt_dev->ip_id);
2765 pkt_dev->ip_id++;
1da177e4
LT		 2766 iph->frag_off = 0;
2767 iplen = 20 + 8 + datalen;
2768 iph->tot_len = htons(iplen);
03c633e7 2769 ip_send_check(iph);
ca6549af 2770 skb->protocol = protocol;
1da177e4
LT		 2771 skb->dev = odev;
2772 skb->pkt_type = PACKET_HOST;
c26bf4a5
TG		 2773
2774 if (!(pkt_dev->flags & F_UDPCSUM)) {
2775 skb->ip_summed = CHECKSUM_NONE;
2776 } else if (odev->features & NETIF_F_V4_CSUM) {
2777 skb->ip_summed = CHECKSUM_PARTIAL;
2778 skb->csum = 0;
2779 udp4_hwcsum(skb, udph->source, udph->dest);
2780 } else {
2781 __wsum csum = udp_csum(skb);
2782
2783 /* add protocol-dependent pseudo-header */
2784 udph->check = csum_tcpudp_magic(udph->source, udph->dest,
2785 datalen + 8, IPPROTO_UDP, csum);
2786
2787 if (udph->check == 0)
2788 udph->check = CSUM_MANGLED_0;
2789 }
2790
26ad7879 2791 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2792
a553e4a6
JHS		 2793#ifdef CONFIG_XFRM
2794 if (!process_ipsec(pkt_dev, skb, protocol))
2795 return NULL;
2796#endif
2797
1da177e4
LT		 2798 return skb;
2799}
2800
222f1806
LC		 2801static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2802 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2803{
2804 struct sk_buff *skb = NULL;
2805 __u8 *eth;
2806 struct udphdr *udph;
c26bf4a5 2807 int datalen, udplen;
1da177e4 2808 struct ipv6hdr *iph;
d5f1ce9a 2809 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2810 __be32 *mpls;
34954ddc
FF		 2811 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2812 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2813 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2814 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2815 u16 queue_map;
ca6549af
SW		 2816
2817 if (pkt_dev->nr_labels)
d5f1ce9a 2818 protocol = htons(ETH_P_MPLS_UC);
64053bee 2819
34954ddc 2820 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2821 protocol = htons(ETH_P_8021Q);
34954ddc 2822
64053bee
RO		 2823 /* Update any of the values, used when we're incrementing various
2824 * fields.
2825 */
2826 mod_cur_headers(pkt_dev);
eb589063 2827 queue_map = pkt_dev->cur_queue_map;
64053bee 2828
7a6e288d 2829 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT		 2830 if (!skb) {
2831 sprintf(pkt_dev->result, "No memory");
2832 return NULL;
2833 }
2834
7a6e288d 2835 prefetchw(skb->data);
1da177e4
LT		 2836 skb_reserve(skb, 16);
2837
2838 /* Reserve for ethernet and IP header */
2839 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2840 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2841 if (pkt_dev->nr_labels)
2842 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2843
2844 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2845 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2846 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2847 *svlan_tci = build_tci(pkt_dev->svlan_id,
2848 pkt_dev->svlan_cfi,
2849 pkt_dev->svlan_p);
34954ddc 2850 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2851 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2852 }
2853 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2854 *vlan_tci = build_tci(pkt_dev->vlan_id,
2855 pkt_dev->vlan_cfi,
2856 pkt_dev->vlan_p);
34954ddc 2857 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2858 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2859 }
2860
525cebed
TG		 2861 skb_set_mac_header(skb, 0);
2862 skb_set_network_header(skb, skb->len);
2863 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2864
2865 skb_set_transport_header(skb, skb->len);
2866 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2867 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2868 skb->priority = pkt_dev->skb_priority;
1da177e4 2869
1da177e4 2870 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2871 *(__be16 *) &eth[12] = protocol;
64053bee 2872
ca6549af
SW		 2873 /* Eth + IPh + UDPh + mpls */
2874 datalen = pkt_dev->cur_pkt_size - 14 -
2875 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2876 pkt_dev->pkt_overhead;
1da177e4 2877
5aa8b572 2878 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2879 datalen = sizeof(struct pktgen_hdr);
e87cc472 2880 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2881 }
2882
c26bf4a5 2883 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT		 2884 udph->source = htons(pkt_dev->cur_udp_src);
2885 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG		 2886 udph->len = htons(udplen);
2887 udph->check = 0;
1da177e4 2888
d5f1ce9a 2889 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2890
1ca7768c
FF		 2891 if (pkt_dev->traffic_class) {
2892 /* Version + traffic class + flow (0) */
252e3346 2893 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2894 }
2895
1da177e4
LT		 2896 iph->hop_limit = 32;
2897
c26bf4a5 2898 iph->payload_len = htons(udplen);
1da177e4
LT		 2899 iph->nexthdr = IPPROTO_UDP;
2900
4e3fd7a0
AD		 2901 iph->daddr = pkt_dev->cur_in6_daddr;
2902 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2903
ca6549af 2904 skb->protocol = protocol;
1da177e4
LT		 2905 skb->dev = odev;
2906 skb->pkt_type = PACKET_HOST;
2907
c26bf4a5
TG		 2908 if (!(pkt_dev->flags & F_UDPCSUM)) {
2909 skb->ip_summed = CHECKSUM_NONE;
2910 } else if (odev->features & NETIF_F_V6_CSUM) {
2911 skb->ip_summed = CHECKSUM_PARTIAL;
2912 skb->csum_start = skb_transport_header(skb) - skb->head;
2913 skb->csum_offset = offsetof(struct udphdr, check);
2914 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2915 } else {
2916 __wsum csum = udp_csum(skb);
2917
2918 /* add protocol-dependent pseudo-header */
2919 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2920
2921 if (udph->check == 0)
2922 udph->check = CSUM_MANGLED_0;
2923 }
2924
26ad7879 2925 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2926
1da177e4
LT		 2927 return skb;
2928}
2929
475ac1e4
SH		 2930static struct sk_buff *fill_packet(struct net_device *odev,
2931 struct pktgen_dev *pkt_dev)
1da177e4 2932{
222f1806 2933 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2934 return fill_packet_ipv6(odev, pkt_dev);
2935 else
2936 return fill_packet_ipv4(odev, pkt_dev);
2937}
2938
222f1806 2939static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2940{
222f1806
LC		 2941 pkt_dev->seq_num = 1;
2942 pkt_dev->idle_acc = 0;
1da177e4 2943 pkt_dev->sofar = 0;
222f1806
LC		 2944 pkt_dev->tx_bytes = 0;
2945 pkt_dev->errors = 0;
1da177e4
LT		 2946}
2947
2948/* Set up structure for sending pkts, clear counters */
2949
2950static void pktgen_run(struct pktgen_thread *t)
2951{
c26a8016 2952 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2953 int started = 0;
2954
f9467eae 2955 func_enter();
1da177e4
LT		 2956
2957 if_lock(t);
c26a8016 2958 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 2959
2960 /*
2961 * setup odev and create initial packet.
2962 */
2963 pktgen_setup_inject(pkt_dev);
2964
222f1806 2965 if (pkt_dev->odev) {
1da177e4 2966 pktgen_clear_counters(pkt_dev);
222f1806 2967 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 2968 pkt_dev->skb = NULL;
398f382c 2969 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 2970
16dab72f 2971 set_pkt_overhead(pkt_dev);
222f1806 2972
1da177e4
LT		 2973 strcpy(pkt_dev->result, "Starting");
2974 started++;
222f1806 2975 } else
1da177e4
LT		 2976 strcpy(pkt_dev->result, "Error starting");
2977 }
2978 if_unlock(t);
222f1806
LC		 2979 if (started)
2980 t->control &= ~(T_STOP);
1da177e4
LT		 2981}
2982
4e58a027 2983static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 2984{
cdcdbe0b 2985 struct pktgen_thread *t;
1da177e4 2986
f9467eae 2987 func_enter();
1da177e4 2988
6146e6a4 2989 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 2990
4e58a027 2991 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 2992 t->control |= T_STOP;
cdcdbe0b 2993
6146e6a4 2994 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 2995}
2996
648fda74 2997static int thread_is_running(const struct pktgen_thread *t)
1da177e4 2998{
648fda74 2999 const struct pktgen_dev *pkt_dev;
1da177e4 3000
c26a8016 3001 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3002 if (pkt_dev->running)
3003 return 1;
3004 return 0;
1da177e4
LT		 3005}
3006
222f1806 3007static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3008{
222f1806 3009 if_lock(t);
1da177e4 3010
222f1806 3011 while (thread_is_running(t)) {
1da177e4 3012
222f1806 3013 if_unlock(t);
1da177e4 3014
222f1806 3015 msleep_interruptible(100);
1da177e4 3016
222f1806
LC		 3017 if (signal_pending(current))
3018 goto signal;
3019 if_lock(t);
3020 }
3021 if_unlock(t);
3022 return 1;
3023signal:
3024 return 0;
1da177e4
LT		 3025}
3026
4e58a027 3027static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3028{
cdcdbe0b 3029 struct pktgen_thread *t;
1da177e4 3030 int sig = 1;
222f1806 3031
6146e6a4 3032 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3033
4e58a027 3034 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3035 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3036 if (sig == 0)
3037 break;
1da177e4 3038 }
cdcdbe0b
LC		 3039
3040 if (sig == 0)
4e58a027 3041 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3042 t->control |= (T_STOP);
cdcdbe0b 3043
6146e6a4 3044 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3045 return sig;
3046}
3047
4e58a027 3048static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3049{
cdcdbe0b 3050 struct pktgen_thread *t;
1da177e4 3051
f9467eae 3052 func_enter();
1da177e4 3053
6146e6a4 3054 mutex_lock(&pktgen_thread_lock);
1da177e4 3055
4e58a027 3056 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3057 t->control |= (T_RUN);
cdcdbe0b 3058
6146e6a4 3059 mutex_unlock(&pktgen_thread_lock);
1da177e4 3060
63adc6fb
SH		 3061 /* Propagate thread->control */
3062 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3063
4e58a027 3064 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3065}
3066
4e58a027 3067static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3068{
3069 struct pktgen_thread *t;
3070
f9467eae 3071 func_enter();
eb37b41c
JB		 3072
3073 mutex_lock(&pktgen_thread_lock);
3074
4e58a027 3075 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3076 t->control |= (T_REMDEVALL);
3077
3078 mutex_unlock(&pktgen_thread_lock);
3079
63adc6fb
SH		 3080 /* Propagate thread->control */
3081 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3082
4e58a027 3083 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3084}
3085
1da177e4
LT		 3086static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3087{
fd29cf72 3088 __u64 bps, mbps, pps;
222f1806 3089 char *p = pkt_dev->result;
fd29cf72
SH		 3090 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3091 pkt_dev->started_at);
3092 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3093
03a14ab1 3094 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3095 (unsigned long long)ktime_to_us(elapsed),
3096 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3097 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3098 (unsigned long long)pkt_dev->sofar,
3099 pkt_dev->cur_pkt_size, nr_frags);
3100
fd29cf72
SH		 3101 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3102 ktime_to_ns(elapsed));
222f1806
LC		 3103
3104 bps = pps * 8 * pkt_dev->cur_pkt_size;
3105
3106 mbps = bps;
3107 do_div(mbps, 1000000);
3108 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3109 (unsigned long long)pps,
3110 (unsigned long long)mbps,
3111 (unsigned long long)bps,
3112 (unsigned long long)pkt_dev->errors);
1da177e4 3113}
1da177e4
LT		 3114
3115/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3116static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3117{
222f1806 3118 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3119
222f1806 3120 if (!pkt_dev->running) {
f9467eae
JP		 3121 pr_warning("interface: %s is already stopped\n",
3122 pkt_dev->odevname);
222f1806
LC		 3123 return -EINVAL;
3124 }
1da177e4 3125
3bda06a3
SH		 3126 kfree_skb(pkt_dev->skb);
3127 pkt_dev->skb = NULL;
398f382c 3128 pkt_dev->stopped_at = ktime_get();
222f1806 3129 pkt_dev->running = 0;
1da177e4 3130
95ed63f7 3131 show_results(pkt_dev, nr_frags);
1da177e4 3132
222f1806 3133 return 0;
1da177e4
LT		 3134}
3135
222f1806 3136static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3137{
c26a8016 3138 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3139
1da177e4
LT		 3140 if_lock(t);
3141
c26a8016
LC		 3142 list_for_each_entry(pkt_dev, &t->if_list, list) {
3143 if (!pkt_dev->running)
222f1806
LC		 3144 continue;
3145 if (best == NULL)
c26a8016 3146 best = pkt_dev;
398f382c 3147 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3148 best = pkt_dev;
1da177e4
LT		 3149 }
3150 if_unlock(t);
222f1806 3151 return best;
1da177e4
LT		 3152}
3153
222f1806
LC		 3154static void pktgen_stop(struct pktgen_thread *t)
3155{
c26a8016 3156 struct pktgen_dev *pkt_dev;
1da177e4 3157
f9467eae 3158 func_enter();
1da177e4 3159
222f1806 3160 if_lock(t);
1da177e4 3161
c26a8016
LC		 3162 list_for_each_entry(pkt_dev, &t->if_list, list) {
3163 pktgen_stop_device(pkt_dev);
95ed63f7 3164 }
1da177e4 3165
222f1806 3166 if_unlock(t);
1da177e4
LT		 3167}
3168
95ed63f7
AK		 3169/*
3170 * one of our devices needs to be removed - find it
3171 * and remove it
3172 */
3173static void pktgen_rem_one_if(struct pktgen_thread *t)
3174{
c26a8016
LC		 3175 struct list_head *q, *n;
3176 struct pktgen_dev *cur;
95ed63f7 3177
f9467eae 3178 func_enter();
95ed63f7
AK		 3179
3180 if_lock(t);
3181
c26a8016
LC		 3182 list_for_each_safe(q, n, &t->if_list) {
3183 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3184
222f1806
LC		 3185 if (!cur->removal_mark)
3186 continue;
95ed63f7 3187
86dc1ad2 3188 kfree_skb(cur->skb);
95ed63f7
AK		 3189 cur->skb = NULL;
3190
3191 pktgen_remove_device(t, cur);
3192
3193 break;
3194 }
3195
3196 if_unlock(t);
3197}
3198
222f1806 3199static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3200{
c26a8016
LC		 3201 struct list_head *q, *n;
3202 struct pktgen_dev *cur;
222f1806 3203
f9467eae
JP		 3204 func_enter();
3205
222f1806 3206 /* Remove all devices, free mem */
95ed63f7 3207
222f1806 3208 if_lock(t);
1da177e4 3209
c26a8016
LC		 3210 list_for_each_safe(q, n, &t->if_list) {
3211 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3212
86dc1ad2 3213 kfree_skb(cur->skb);
95ed63f7
AK		 3214 cur->skb = NULL;
3215
1da177e4
LT		 3216 pktgen_remove_device(t, cur);
3217 }
3218
222f1806 3219 if_unlock(t);
1da177e4
LT		 3220}
3221
222f1806 3222static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3223{
222f1806 3224 /* Remove from the thread list */
4e58a027 3225 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3226}
3227
ef87979c 3228static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3229{
398f382c 3230 ktime_t idle_start = ktime_get();
ef87979c 3231 schedule();
398f382c 3232 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3233}
3791decb 3234
ef87979c
SH		 3235static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3236{
398f382c 3237 ktime_t idle_start = ktime_get();
3791decb 3238
ef87979c
SH		 3239 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3240 if (signal_pending(current))
3241 break;
3242
3243 if (need_resched())
3244 pktgen_resched(pkt_dev);
3245 else
3246 cpu_relax();
3247 }
398f382c 3248 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3249}
3250
475ac1e4 3251static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3252{
00829823 3253 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3254 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3255 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3256 struct netdev_queue *txq;
fd2ea0a7 3257 u16 queue_map;
1da177e4
LT		 3258 int ret;
3259
ef87979c
SH		 3260 /* If device is offline, then don't send */
3261 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3262 pktgen_stop_device(pkt_dev);
3263 return;
fd2ea0a7
DM		 3264 }
3265
ef87979c
SH		 3266 /* This is max DELAY, this has special meaning of
3267 * "never transmit"
3268 */
3269 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3270 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3271 return;
1da177e4 3272 }
222f1806 3273
ef87979c 3274 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3275 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3276 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3277 /* build a new pkt */
3278 kfree_skb(pkt_dev->skb);
3279
3280 pkt_dev->skb = fill_packet(odev, pkt_dev);
3281 if (pkt_dev->skb == NULL) {
f9467eae 3282 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3283 schedule();
3284 pkt_dev->clone_count--; /* back out increment, OOM */
3285 return;
1da177e4 3286 }
baac8564 3287 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3288 pkt_dev->allocated_skbs++;
3289 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3290 }
95ed63f7 3291
ef87979c
SH		 3292 if (pkt_dev->delay && pkt_dev->last_ok)
3293 spin(pkt_dev, pkt_dev->next_tx);
3294
fd2ea0a7
DM		 3295 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3296 txq = netdev_get_tx_queue(odev, queue_map);
3297
3298 __netif_tx_lock_bh(txq);
5b8db2f5 3299
73466498 3300 if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
ef87979c 3301 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3302 pkt_dev->last_ok = 0;
3303 goto unlock;
3304 }
3305 atomic_inc(&(pkt_dev->skb->users));
3306 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3307
3308 switch (ret) {
3309 case NETDEV_TX_OK:
3310 txq_trans_update(txq);
3311 pkt_dev->last_ok = 1;
3312 pkt_dev->sofar++;
3313 pkt_dev->seq_num++;
baac8564 3314 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3315 break;
f466dba1
JF		 3316 case NET_XMIT_DROP:
3317 case NET_XMIT_CN:
3318 case NET_XMIT_POLICED:
3319 /* skb has been consumed */
3320 pkt_dev->errors++;
3321 break;
ef87979c 3322 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3323 net_info_ratelimited("%s xmit error: %d\n",
3324 pkt_dev->odevname, ret);
ef87979c
SH		 3325 pkt_dev->errors++;
3326 /* fallthru */
3327 case NETDEV_TX_LOCKED:
3328 case NETDEV_TX_BUSY:
3329 /* Retry it next time */
3330 atomic_dec(&(pkt_dev->skb->users));
3331 pkt_dev->last_ok = 0;
222f1806 3332 }
0835acfe 3333unlock:
fd2ea0a7 3334 __netif_tx_unlock_bh(txq);
222f1806 3335
1da177e4
LT		 3336 /* If pkt_dev->count is zero, then run forever */
3337 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3338 pktgen_wait_for_skb(pkt_dev);
222f1806 3339
1da177e4
LT		 3340 /* Done with this */
3341 pktgen_stop_device(pkt_dev);
222f1806 3342 }
222f1806 3343}
1da177e4 3344
4ec93edb 3345/*
1da177e4
LT		 3346 * Main loop of the thread goes here
3347 */
3348
ee74baa7 3349static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3350{
3351 DEFINE_WAIT(wait);
ee74baa7 3352 struct pktgen_thread *t = arg;
222f1806 3353 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3354 int cpu = t->cpu;
1da177e4 3355
ee74baa7 3356 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3357
3358 init_waitqueue_head(&t->queue);
d3ede327 3359 complete(&t->start_done);
1da177e4 3360
f9467eae 3361 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3362
ee74baa7 3363 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3364
83144186
RW		 3365 set_freezable();
3366
ee74baa7
DM		 3367 while (!kthread_should_stop()) {
3368 pkt_dev = next_to_run(t);
1da177e4 3369
ef87979c 3370 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3371 if (t->net->pktgen_exiting)
551eaff1 3372 break;
ef87979c
SH		 3373 wait_event_interruptible_timeout(t->queue,
3374 t->control != 0,
3375 HZ/10);
1b3f720b 3376 try_to_freeze();
ef87979c 3377 continue;
ee74baa7 3378 }
1da177e4 3379
ee74baa7 3380 __set_current_state(TASK_RUNNING);
222f1806 3381
ef87979c 3382 if (likely(pkt_dev)) {
1da177e4
LT		 3383 pktgen_xmit(pkt_dev);
3384
ef87979c
SH		 3385 if (need_resched())
3386 pktgen_resched(pkt_dev);
3387 else
3388 cpu_relax();
3389 }
3390
222f1806 3391 if (t->control & T_STOP) {
1da177e4
LT		 3392 pktgen_stop(t);
3393 t->control &= ~(T_STOP);
3394 }
3395
222f1806 3396 if (t->control & T_RUN) {
1da177e4
LT		 3397 pktgen_run(t);
3398 t->control &= ~(T_RUN);
3399 }
3400
222f1806 3401 if (t->control & T_REMDEVALL) {
1da177e4 3402 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3403 t->control &= ~(T_REMDEVALL);
3404 }
3405
222f1806 3406 if (t->control & T_REMDEV) {
95ed63f7 3407 pktgen_rem_one_if(t);
1da177e4
LT		 3408 t->control &= ~(T_REMDEV);
3409 }
3410
09fe3ef4
AM		 3411 try_to_freeze();
3412
ee74baa7 3413 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3414 }
1da177e4 3415
f9467eae 3416 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3417 pktgen_stop(t);
1da177e4 3418
f9467eae 3419 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3420 pktgen_rem_all_ifs(t);
1da177e4 3421
f9467eae 3422 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3423 pktgen_rem_thread(t);
cdcdbe0b 3424
551eaff1
ED		 3425 /* Wait for kthread_stop */
3426 while (!kthread_should_stop()) {
3427 set_current_state(TASK_INTERRUPTIBLE);
3428 schedule();
3429 }
3430 __set_current_state(TASK_RUNNING);
3431
ee74baa7 3432 return 0;
1da177e4
LT		 3433}
3434
222f1806 3435static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3436 const char *ifname, bool exact)
1da177e4 3437{
c26a8016 3438 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3439 size_t len = strlen(ifname);
222f1806 3440
3e984840 3441 if_lock(t);
c26a8016 3442 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3443 if (strncmp(p->odevname, ifname, len) == 0) {
3444 if (p->odevname[len]) {
3445 if (exact || p->odevname[len] != '@')
3446 continue;
3447 }
c26a8016 3448 pkt_dev = p;
222f1806
LC		 3449 break;
3450 }
222f1806
LC		 3451
3452 if_unlock(t);
f9467eae 3453 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3454 return pkt_dev;
1da177e4
LT		 3455}
3456
4ec93edb
YH		 3457/*
3458 * Adds a dev at front of if_list.
1da177e4
LT		 3459 */
3460
222f1806
LC		 3461static int add_dev_to_thread(struct pktgen_thread *t,
3462 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3463{
3464 int rv = 0;
222f1806
LC		 3465
3466 if_lock(t);
3467
3468 if (pkt_dev->pg_thread) {
f9467eae 3469 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3470 rv = -EBUSY;
3471 goto out;
3472 }
c26a8016
LC		 3473
3474 list_add(&pkt_dev->list, &t->if_list);
222f1806 3475 pkt_dev->pg_thread = t;
1da177e4
LT		 3476 pkt_dev->running = 0;
3477
222f1806
LC		 3478out:
3479 if_unlock(t);
3480 return rv;
1da177e4
LT		 3481}
3482
3483/* Called under thread lock */
3484
222f1806 3485static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3486{
222f1806 3487 struct pktgen_dev *pkt_dev;
39df232f 3488 int err;
3291b9db 3489 int node = cpu_to_node(t->cpu);
222f1806 3490
1da177e4
LT		 3491 /* We don't allow a device to be on several threads */
3492
4e58a027 3493 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3494 if (pkt_dev) {
f9467eae 3495 pr_err("ERROR: interface already used\n");
222f1806
LC		 3496 return -EBUSY;
3497 }
d50a6b56 3498
3291b9db 3499 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3500 if (!pkt_dev)
3501 return -ENOMEM;
3502
593f63b0 3503 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3504 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3505 node);
d50a6b56
SH		 3506 if (pkt_dev->flows == NULL) {
3507 kfree(pkt_dev);
3508 return -ENOMEM;
3509 }
d50a6b56 3510
95ed63f7 3511 pkt_dev->removal_mark = 0;
d50a6b56 3512 pkt_dev->nfrags = 0;
fd29cf72 3513 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3514 pkt_dev->count = pg_count_d;
3515 pkt_dev->sofar = 0;
222f1806 3516 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3517 pkt_dev->udp_src_max = 9;
3518 pkt_dev->udp_dst_min = 9;
3519 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3520 pkt_dev->vlan_p = 0;
3521 pkt_dev->vlan_cfi = 0;
3522 pkt_dev->vlan_id = 0xffff;
3523 pkt_dev->svlan_p = 0;
3524 pkt_dev->svlan_cfi = 0;
3525 pkt_dev->svlan_id = 0xffff;
e99b99b4 3526 pkt_dev->node = -1;
34954ddc 3527
4e58a027 3528 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3529 if (err)
3530 goto out1;
d8873315
NH		 3531 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3532 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3533
4e58a027 3534 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3535 &pktgen_if_fops, pkt_dev);
39df232f 3536 if (!pkt_dev->entry) {
f9467eae 3537 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3538 PG_PROC_DIR, ifname);
39df232f
SH		 3539 err = -EINVAL;
3540 goto out2;
d50a6b56 3541 }
a553e4a6
JHS		 3542#ifdef CONFIG_XFRM
3543 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3544 pkt_dev->ipsproto = IPPROTO_ESP;
3545#endif
d50a6b56
SH		 3546
3547 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3548out2:
3549 dev_put(pkt_dev->odev);
3550out1:
a553e4a6
JHS		 3551#ifdef CONFIG_XFRM
3552 free_SAs(pkt_dev);
3553#endif
1d0ebfe7 3554 vfree(pkt_dev->flows);
39df232f
SH		 3555 kfree(pkt_dev);
3556 return err;
1da177e4
LT		 3557}
3558
4e58a027 3559static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3560{
cdcdbe0b 3561 struct pktgen_thread *t;
d50a6b56 3562 struct proc_dir_entry *pe;
ee74baa7 3563 struct task_struct *p;
222f1806 3564
3291b9db
ED		 3565 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3566 cpu_to_node(cpu));
222f1806 3567 if (!t) {
f9467eae 3568 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3569 return -ENOMEM;
3570 }
3571
222f1806 3572 spin_lock_init(&t->if_lock);
1da177e4 3573 t->cpu = cpu;
222f1806 3574
ee74baa7
DM		 3575 INIT_LIST_HEAD(&t->if_list);
3576
4e58a027 3577 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3578 init_completion(&t->start_done);
ee74baa7 3579
94dcf29a
ED		 3580 p = kthread_create_on_node(pktgen_thread_worker,
3581 t,
3582 cpu_to_node(cpu),
3583 "kpktgend_%d", cpu);
ee74baa7 3584 if (IS_ERR(p)) {
f9467eae 3585 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3586 list_del(&t->th_list);
3587 kfree(t);
3588 return PTR_ERR(p);
3589 }
3590 kthread_bind(p, cpu);
3591 t->tsk = p;
3592
4e58a027 3593 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3594 &pktgen_thread_fops, t);
222f1806 3595 if (!pe) {
f9467eae 3596 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3597 PG_PROC_DIR, t->tsk->comm);
3598 kthread_stop(p);
3599 list_del(&t->th_list);
222f1806
LC		 3600 kfree(t);
3601 return -EINVAL;
3602 }
d50a6b56 3603
4e58a027 3604 t->net = pn;
ee74baa7 3605 wake_up_process(p);
d3ede327 3606 wait_for_completion(&t->start_done);
1da177e4
LT		 3607
3608 return 0;
3609}
3610
4ec93edb
YH		 3611/*
3612 * Removes a device from the thread if_list.
1da177e4 3613 */
222f1806
LC		 3614static void _rem_dev_from_if_list(struct pktgen_thread *t,
3615 struct pktgen_dev *pkt_dev)
1da177e4 3616{
c26a8016
LC		 3617 struct list_head *q, *n;
3618 struct pktgen_dev *p;
1da177e4 3619
c26a8016
LC		 3620 list_for_each_safe(q, n, &t->if_list) {
3621 p = list_entry(q, struct pktgen_dev, list);
3622 if (p == pkt_dev)
3623 list_del(&p->list);
1da177e4
LT		 3624 }
3625}
3626
222f1806
LC		 3627static int pktgen_remove_device(struct pktgen_thread *t,
3628 struct pktgen_dev *pkt_dev)
1da177e4 3629{
f9467eae 3630 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3631
222f1806 3632 if (pkt_dev->running) {
f9467eae 3633 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3634 pktgen_stop_device(pkt_dev);
3635 }
3636
3637 /* Dis-associate from the interface */
1da177e4
LT		 3638
3639 if (pkt_dev->odev) {
3640 dev_put(pkt_dev->odev);
222f1806
LC		 3641 pkt_dev->odev = NULL;
3642 }
3643
1da177e4
LT		 3644 /* And update the thread if_list */
3645
3646 _rem_dev_from_if_list(t, pkt_dev);
3647
39df232f 3648 if (pkt_dev->entry)
a8ca16ea 3649 proc_remove(pkt_dev->entry);
1da177e4 3650
a553e4a6
JHS		 3651#ifdef CONFIG_XFRM
3652 free_SAs(pkt_dev);
3653#endif
1d0ebfe7 3654 vfree(pkt_dev->flows);
26ad7879
ED		 3655 if (pkt_dev->page)
3656 put_page(pkt_dev->page);
1da177e4 3657 kfree(pkt_dev);
222f1806 3658 return 0;
1da177e4
LT		 3659}
3660
4e58a027 3661static int __net_init pg_net_init(struct net *net)
1da177e4 3662{
4e58a027 3663 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3664 struct proc_dir_entry *pe;
4e58a027
CW		 3665 int cpu, ret = 0;
3666
3667 pn->net = net;
3668 INIT_LIST_HEAD(&pn->pktgen_threads);
3669 pn->pktgen_exiting = false;
3670 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3671 if (!pn->proc_dir) {
3672 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3673 return -ENODEV;
4e58a027
CW		 3674 }
3675 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3676 if (pe == NULL) {
4e58a027 3677 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3678 ret = -EINVAL;
4e58a027 3679 goto remove;
222f1806 3680 }
1da177e4 3681
670c02c2 3682 for_each_online_cpu(cpu) {
8024bb24 3683 int err;
1da177e4 3684
4e58a027 3685 err = pktgen_create_thread(cpu, pn);
8024bb24 3686 if (err)
4e58a027 3687 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3688 cpu, err);
222f1806 3689 }
8024bb24 3690
4e58a027
CW		 3691 if (list_empty(&pn->pktgen_threads)) {
3692 pr_err("Initialization failed for all threads\n");
ce14f894 3693 ret = -ENODEV;
4e58a027 3694 goto remove_entry;
8024bb24
LC		 3695 }
3696
222f1806 3697 return 0;
ce14f894 3698
4e58a027
CW		 3699remove_entry:
3700 remove_proc_entry(PGCTRL, pn->proc_dir);
3701remove:
ece31ffd 3702 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3703 return ret;
1da177e4
LT		 3704}
3705
4e58a027 3706static void __net_exit pg_net_exit(struct net *net)
1da177e4 3707{
4e58a027 3708 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3709 struct pktgen_thread *t;
3710 struct list_head *q, *n;
d4b11335 3711 LIST_HEAD(list);
1da177e4 3712
222f1806 3713 /* Stop all interfaces & threads */
4e58a027 3714 pn->pktgen_exiting = true;
1da177e4 3715
c57b5468 3716 mutex_lock(&pktgen_thread_lock);
4e58a027 3717 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3718 mutex_unlock(&pktgen_thread_lock);
3719
3720 list_for_each_safe(q, n, &list) {
cdcdbe0b 3721 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3722 list_del(&t->th_list);
ee74baa7
DM		 3723 kthread_stop(t->tsk);
3724 kfree(t);
222f1806 3725 }
1da177e4 3726
4e58a027 3727 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3728 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3729}
3730
3731static struct pernet_operations pg_net_ops = {
3732 .init = pg_net_init,
3733 .exit = pg_net_exit,
3734 .id = &pg_net_id,
3735 .size = sizeof(struct pktgen_net),
3736};
3737
3738static int __init pg_init(void)
3739{
3740 int ret = 0;
1da177e4 3741
4e58a027
CW		 3742 pr_info("%s", version);
3743 ret = register_pernet_subsys(&pg_net_ops);
3744 if (ret)
3745 return ret;
3746 ret = register_netdevice_notifier(&pktgen_notifier_block);
3747 if (ret)
3748 unregister_pernet_subsys(&pg_net_ops);
3749
3750 return ret;
3751}
3752
3753static void __exit pg_cleanup(void)
3754{
3755 unregister_netdevice_notifier(&pktgen_notifier_block);
3756 unregister_pernet_subsys(&pg_net_ops);
1da177e4
LT		 3757}
3758
1da177e4
LT		 3759module_init(pg_init);
3760module_exit(pg_cleanup);
3761
c3d2f52d 3762MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3763MODULE_DESCRIPTION("Packet Generator tool");
3764MODULE_LICENSE("GPL");
c3d2f52d 3765MODULE_VERSION(VERSION);
1da177e4 3766module_param(pg_count_d, int, 0);
c3d2f52d 3767MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3768module_param(pg_delay_d, int, 0);
c3d2f52d 3769MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3770module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3771MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3772module_param(debug, int, 0);
c3d2f52d 3773MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
Linux kernel - Deliverables
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