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{pktgen, xfrm} Construct skb dst for tunnel mode transformation
[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) */
de4aee7d 392 __u32 spi;
cf93d47e
FD		 393 struct dst_entry dst;
394 struct dst_ops dstops;
a553e4a6 395#endif
39df232f 396 char result[512];
1da177e4
LT		 397};
398
399struct pktgen_hdr {
252e3346
AV		 400 __be32 pgh_magic;
401 __be32 seq_num;
402 __be32 tv_sec;
403 __be32 tv_usec;
1da177e4
LT		 404};
405
4e58a027
CW		 406
407static int pg_net_id __read_mostly;
408
409struct pktgen_net {
410 struct net *net;
411 struct proc_dir_entry *proc_dir;
412 struct list_head pktgen_threads;
413 bool pktgen_exiting;
414};
551eaff1 415
1da177e4 416struct pktgen_thread {
63adc6fb 417 spinlock_t if_lock; /* for list of devices */
c26a8016 418 struct list_head if_list; /* All device here */
cdcdbe0b 419 struct list_head th_list;
ee74baa7 420 struct task_struct *tsk;
222f1806 421 char result[512];
222f1806 422
63adc6fb
SH		 423 /* Field for thread to receive "posted" events terminate,
424 stop ifs etc. */
222f1806
LC		 425
426 u32 control;
1da177e4
LT		 427 int cpu;
428
222f1806 429 wait_queue_head_t queue;
d3ede327 430 struct completion start_done;
4e58a027 431 struct pktgen_net *net;
1da177e4
LT		 432};
433
434#define REMOVE 1
435#define FIND 0
436
c3d2f52d 437static const char version[] =
f9467eae
JP		 438 "Packet Generator for packet performance testing. "
439 "Version: " VERSION "\n";
1da177e4 440
222f1806
LC		 441static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
442static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
443static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 444 const char *ifname, bool exact);
1da177e4 445static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 446static void pktgen_run_all_threads(struct pktgen_net *pn);
447static void pktgen_reset_all_threads(struct pktgen_net *pn);
448static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 449
222f1806 450static void pktgen_stop(struct pktgen_thread *t);
1da177e4 451static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 452
1da177e4 453/* Module parameters, defaults. */
65c5b786
SH		 454static int pg_count_d __read_mostly = 1000;
455static int pg_delay_d __read_mostly;
456static int pg_clone_skb_d __read_mostly;
457static int debug __read_mostly;
1da177e4 458
222fa076 459static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 460
1da177e4
LT		 461static struct notifier_block pktgen_notifier_block = {
462 .notifier_call = pktgen_device_event,
463};
464
1da177e4 465/*
4ec93edb 466 * /proc handling functions
1da177e4
LT		 467 *
468 */
469
d50a6b56 470static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 471{
c3d2f52d 472 seq_puts(seq, version);
d50a6b56 473 return 0;
1da177e4
LT		 474}
475
63adc6fb
SH		 476static ssize_t pgctrl_write(struct file *file, const char __user *buf,
477 size_t count, loff_t *ppos)
1da177e4 478{
1da177e4 479 int err = 0;
d50a6b56 480 char data[128];
4e58a027 481 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 482
222f1806
LC		 483 if (!capable(CAP_NET_ADMIN)) {
484 err = -EPERM;
1da177e4 485 goto out;
222f1806 486 }
1da177e4 487
d50a6b56
SH		 488 if (count > sizeof(data))
489 count = sizeof(data);
1da177e4 490
1da177e4 491 if (copy_from_user(data, buf, count)) {
b4099fab 492 err = -EFAULT;
d50a6b56 493 goto out;
222f1806
LC		 494 }
495 data[count - 1] = 0; /* Make string */
1da177e4 496
222f1806 497 if (!strcmp(data, "stop"))
4e58a027 498 pktgen_stop_all_threads_ifs(pn);
1da177e4 499
222f1806 500 else if (!strcmp(data, "start"))
4e58a027 501 pktgen_run_all_threads(pn);
1da177e4 502
eb37b41c 503 else if (!strcmp(data, "reset"))
4e58a027 504 pktgen_reset_all_threads(pn);
eb37b41c 505
222f1806 506 else
f9467eae 507 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 508
509 err = count;
510
222f1806
LC		 511out:
512 return err;
1da177e4
LT		 513}
514
d50a6b56
SH		 515static int pgctrl_open(struct inode *inode, struct file *file)
516{
d9dda78b 517 return single_open(file, pgctrl_show, PDE_DATA(inode));
d50a6b56
SH		 518}
519
9a32144e 520static const struct file_operations pktgen_fops = {
222f1806
LC		 521 .owner = THIS_MODULE,
522 .open = pgctrl_open,
523 .read = seq_read,
524 .llseek = seq_lseek,
525 .write = pgctrl_write,
526 .release = single_release,
d50a6b56
SH		 527};
528
529static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 530{
648fda74 531 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 532 ktime_t stopped;
533 u64 idle;
222f1806
LC		 534
535 seq_printf(seq,
536 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
537 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
538 pkt_dev->max_pkt_size);
539
540 seq_printf(seq,
fd29cf72
SH		 541 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
542 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 543 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 544
545 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
546 pkt_dev->lflow);
547
45b270f8
RO		 548 seq_printf(seq,
549 " queue_map_min: %u queue_map_max: %u\n",
550 pkt_dev->queue_map_min,
551 pkt_dev->queue_map_max);
552
9e50e3ac
JF		 553 if (pkt_dev->skb_priority)
554 seq_printf(seq, " skb_priority: %u\n",
555 pkt_dev->skb_priority);
556
222f1806 557 if (pkt_dev->flags & F_IPV6) {
222f1806 558 seq_printf(seq,
47a0200d
AD		 559 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
560 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
561 &pkt_dev->in6_saddr,
562 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
563 &pkt_dev->in6_daddr,
564 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 565 } else {
566 seq_printf(seq,
567 " dst_min: %s dst_max: %s\n",
568 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 569 seq_printf(seq,
63adc6fb
SH		 570 " src_min: %s src_max: %s\n",
571 pkt_dev->src_min, pkt_dev->src_max);
572 }
1da177e4 573
222f1806 574 seq_puts(seq, " src_mac: ");
1da177e4 575
e174961c
JB		 576 seq_printf(seq, "%pM ",
577 is_zero_ether_addr(pkt_dev->src_mac) ?
578 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 579
580 seq_printf(seq, "dst_mac: ");
e174961c 581 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 582
583 seq_printf(seq,
63adc6fb
SH		 584 " udp_src_min: %d udp_src_max: %d"
585 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 586 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
587 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
588
589 seq_printf(seq,
ca6549af 590 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 591 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 592
ca6549af 593 if (pkt_dev->nr_labels) {
95c96174 594 unsigned int i;
ca6549af 595 seq_printf(seq, " mpls: ");
e71a4783 596 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 597 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
598 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
599 }
600
63adc6fb 601 if (pkt_dev->vlan_id != 0xffff)
34954ddc 602 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 603 pkt_dev->vlan_id, pkt_dev->vlan_p,
604 pkt_dev->vlan_cfi);
34954ddc 605
63adc6fb 606 if (pkt_dev->svlan_id != 0xffff)
34954ddc 607 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 608 pkt_dev->svlan_id, pkt_dev->svlan_p,
609 pkt_dev->svlan_cfi);
34954ddc 610
63adc6fb 611 if (pkt_dev->tos)
1ca7768c 612 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 613
63adc6fb 614 if (pkt_dev->traffic_class)
1ca7768c 615 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 616
e99b99b4
RO		 617 if (pkt_dev->node >= 0)
618 seq_printf(seq, " node: %d\n", pkt_dev->node);
619
ca6549af
SW		 620 seq_printf(seq, " Flags: ");
621
222f1806
LC		 622 if (pkt_dev->flags & F_IPV6)
623 seq_printf(seq, "IPV6 ");
1da177e4 624
222f1806
LC		 625 if (pkt_dev->flags & F_IPSRC_RND)
626 seq_printf(seq, "IPSRC_RND ");
1da177e4 627
222f1806
LC		 628 if (pkt_dev->flags & F_IPDST_RND)
629 seq_printf(seq, "IPDST_RND ");
1da177e4 630
222f1806
LC		 631 if (pkt_dev->flags & F_TXSIZE_RND)
632 seq_printf(seq, "TXSIZE_RND ");
1da177e4 633
222f1806
LC		 634 if (pkt_dev->flags & F_UDPSRC_RND)
635 seq_printf(seq, "UDPSRC_RND ");
1da177e4 636
222f1806
LC		 637 if (pkt_dev->flags & F_UDPDST_RND)
638 seq_printf(seq, "UDPDST_RND ");
1da177e4 639
c26bf4a5
TG		 640 if (pkt_dev->flags & F_UDPCSUM)
641 seq_printf(seq, "UDPCSUM ");
642
ca6549af
SW		 643 if (pkt_dev->flags & F_MPLS_RND)
644 seq_printf(seq, "MPLS_RND ");
645
45b270f8
RO		 646 if (pkt_dev->flags & F_QUEUE_MAP_RND)
647 seq_printf(seq, "QUEUE_MAP_RND ");
648
e6fce5b9
RO		 649 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
650 seq_printf(seq, "QUEUE_MAP_CPU ");
651
007a531b
JHS		 652 if (pkt_dev->cflows) {
653 if (pkt_dev->flags & F_FLOW_SEQ)
654 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
655 else
656 seq_printf(seq, "FLOW_RND ");
657 }
658
a553e4a6
JHS		 659#ifdef CONFIG_XFRM
660 if (pkt_dev->flags & F_IPSEC_ON)
661 seq_printf(seq, "IPSEC ");
662#endif
663
222f1806
LC		 664 if (pkt_dev->flags & F_MACSRC_RND)
665 seq_printf(seq, "MACSRC_RND ");
1da177e4 666
222f1806
LC		 667 if (pkt_dev->flags & F_MACDST_RND)
668 seq_printf(seq, "MACDST_RND ");
1da177e4 669
34954ddc
FF		 670 if (pkt_dev->flags & F_VID_RND)
671 seq_printf(seq, "VID_RND ");
672
673 if (pkt_dev->flags & F_SVID_RND)
674 seq_printf(seq, "SVID_RND ");
675
e99b99b4
RO		 676 if (pkt_dev->flags & F_NODE)
677 seq_printf(seq, "NODE_ALLOC ");
678
222f1806
LC		 679 seq_puts(seq, "\n");
680
fd29cf72 681 /* not really stopped, more like last-running-at */
398f382c 682 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 683 idle = pkt_dev->idle_acc;
684 do_div(idle, NSEC_PER_USEC);
1da177e4 685
222f1806 686 seq_printf(seq,
fd29cf72 687 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 688 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 689 (unsigned long long)pkt_dev->errors);
690
691 seq_printf(seq,
692 " started: %lluus stopped: %lluus idle: %lluus\n",
693 (unsigned long long) ktime_to_us(pkt_dev->started_at),
694 (unsigned long long) ktime_to_us(stopped),
695 (unsigned long long) idle);
1da177e4 696
222f1806
LC		 697 seq_printf(seq,
698 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 699 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
700 pkt_dev->cur_src_mac_offset);
1da177e4 701
222f1806 702 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 703 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
704 &pkt_dev->cur_in6_saddr,
705 &pkt_dev->cur_in6_daddr);
222f1806 706 } else
0373a946
AW		 707 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
708 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 709
222f1806 710 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 711 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 712
45b270f8
RO		 713 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
714
222f1806 715 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 716
717 if (pkt_dev->result[0])
222f1806 718 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 719 else
222f1806 720 seq_printf(seq, "Result: Idle\n");
1da177e4 721
d50a6b56 722 return 0;
1da177e4
LT		 723}
724
ca6549af 725
63adc6fb
SH		 726static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
727 __u32 *num)
ca6549af
SW		 728{
729 int i = 0;
730 *num = 0;
731
e71a4783 732 for (; i < maxlen; i++) {
82fd5b5d 733 int value;
ca6549af
SW		 734 char c;
735 *num <<= 4;
736 if (get_user(c, &user_buffer[i]))
737 return -EFAULT;
82fd5b5d
AS		 738 value = hex_to_bin(c);
739 if (value >= 0)
740 *num |= value;
ca6549af
SW		 741 else
742 break;
743 }
744 return i;
745}
746
222f1806
LC		 747static int count_trail_chars(const char __user * user_buffer,
748 unsigned int maxlen)
1da177e4
LT		 749{
750 int i;
751
752 for (i = 0; i < maxlen; i++) {
222f1806
LC		 753 char c;
754 if (get_user(c, &user_buffer[i]))
755 return -EFAULT;
756 switch (c) {
1da177e4
LT		 757 case '\"':
758 case '\n':
759 case '\r':
760 case '\t':
761 case ' ':
762 case '=':
763 break;
764 default:
765 goto done;
3ff50b79 766 }
1da177e4
LT		 767 }
768done:
769 return i;
770}
771
bf0813bd
PG		 772static long num_arg(const char __user *user_buffer, unsigned long maxlen,
773 unsigned long *num)
1da177e4 774{
d6182223 775 int i;
1da177e4 776 *num = 0;
222f1806 777
d6182223 778 for (i = 0; i < maxlen; i++) {
222f1806
LC		 779 char c;
780 if (get_user(c, &user_buffer[i]))
781 return -EFAULT;
782 if ((c >= '0') && (c <= '9')) {
1da177e4 783 *num *= 10;
222f1806 784 *num += c - '0';
1da177e4
LT		 785 } else
786 break;
787 }
788 return i;
789}
790
222f1806 791static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 792{
d6182223 793 int i;
1da177e4 794
d6182223 795 for (i = 0; i < maxlen; i++) {
222f1806
LC		 796 char c;
797 if (get_user(c, &user_buffer[i]))
798 return -EFAULT;
799 switch (c) {
1da177e4
LT		 800 case '\"':
801 case '\n':
802 case '\r':
803 case '\t':
804 case ' ':
805 goto done_str;
806 break;
807 default:
808 break;
3ff50b79 809 }
1da177e4
LT		 810 }
811done_str:
1da177e4
LT		 812 return i;
813}
814
ca6549af
SW		 815static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
816{
95c96174 817 unsigned int n = 0;
ca6549af
SW		 818 char c;
819 ssize_t i = 0;
820 int len;
821
822 pkt_dev->nr_labels = 0;
823 do {
824 __u32 tmp;
1ca7768c 825 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 826 if (len <= 0)
827 return len;
828 pkt_dev->labels[n] = htonl(tmp);
829 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
830 pkt_dev->flags |= F_MPLS_RND;
831 i += len;
832 if (get_user(c, &buffer[i]))
833 return -EFAULT;
834 i++;
835 n++;
836 if (n >= MAX_MPLS_LABELS)
837 return -E2BIG;
e71a4783 838 } while (c == ',');
ca6549af
SW		 839
840 pkt_dev->nr_labels = n;
841 return i;
842}
843
222f1806
LC		 844static ssize_t pktgen_if_write(struct file *file,
845 const char __user * user_buffer, size_t count,
846 loff_t * offset)
1da177e4 847{
8a994a71 848 struct seq_file *seq = file->private_data;
222f1806 849 struct pktgen_dev *pkt_dev = seq->private;
d6182223 850 int i, max, len;
1da177e4
LT		 851 char name[16], valstr[32];
852 unsigned long value = 0;
222f1806
LC		 853 char *pg_result = NULL;
854 int tmp = 0;
1da177e4 855 char buf[128];
222f1806
LC		 856
857 pg_result = &(pkt_dev->result[0]);
858
1da177e4 859 if (count < 1) {
f9467eae 860 pr_warning("wrong command format\n");
1da177e4
LT		 861 return -EINVAL;
862 }
222f1806 863
d6182223
PG		 864 max = count;
865 tmp = count_trail_chars(user_buffer, max);
222f1806 866 if (tmp < 0) {
f9467eae 867 pr_warning("illegal format\n");
222f1806 868 return tmp;
1da177e4 869 }
d6182223 870 i = tmp;
222f1806 871
1da177e4
LT		 872 /* Read variable name */
873
874 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 875 if (len < 0)
222f1806 876 return len;
63adc6fb 877
1da177e4 878 memset(name, 0, sizeof(name));
222f1806 879 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 880 return -EFAULT;
881 i += len;
222f1806
LC		 882
883 max = count - i;
1da177e4 884 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 885 if (len < 0)
886 return len;
887
1da177e4
LT		 888 i += len;
889
890 if (debug) {
86c2c0a8 891 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 892 char tb[copy + 1];
893 if (copy_from_user(tb, user_buffer, copy))
1da177e4 894 return -EFAULT;
448d7b5d 895 tb[copy] = 0;
f342cda7
JP		 896 pr_debug("%s,%lu buffer -:%s:-\n",
897 name, (unsigned long)count, tb);
222f1806 898 }
1da177e4
LT		 899
900 if (!strcmp(name, "min_pkt_size")) {
901 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 902 if (len < 0)
222f1806 903 return len;
63adc6fb 904
1da177e4 905 i += len;
222f1806
LC		 906 if (value < 14 + 20 + 8)
907 value = 14 + 20 + 8;
908 if (value != pkt_dev->min_pkt_size) {
909 pkt_dev->min_pkt_size = value;
910 pkt_dev->cur_pkt_size = value;
911 }
912 sprintf(pg_result, "OK: min_pkt_size=%u",
913 pkt_dev->min_pkt_size);
1da177e4
LT		 914 return count;
915 }
916
222f1806 917 if (!strcmp(name, "max_pkt_size")) {
1da177e4 918 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 919 if (len < 0)
222f1806 920 return len;
63adc6fb 921
1da177e4 922 i += len;
222f1806
LC		 923 if (value < 14 + 20 + 8)
924 value = 14 + 20 + 8;
925 if (value != pkt_dev->max_pkt_size) {
926 pkt_dev->max_pkt_size = value;
927 pkt_dev->cur_pkt_size = value;
928 }
929 sprintf(pg_result, "OK: max_pkt_size=%u",
930 pkt_dev->max_pkt_size);
1da177e4
LT		 931 return count;
932 }
933
222f1806 934 /* Shortcut for min = max */
1da177e4
LT		 935
936 if (!strcmp(name, "pkt_size")) {
937 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 938 if (len < 0)
222f1806 939 return len;
63adc6fb 940
1da177e4 941 i += len;
222f1806
LC		 942 if (value < 14 + 20 + 8)
943 value = 14 + 20 + 8;
944 if (value != pkt_dev->min_pkt_size) {
945 pkt_dev->min_pkt_size = value;
946 pkt_dev->max_pkt_size = value;
947 pkt_dev->cur_pkt_size = value;
948 }
1da177e4
LT		 949 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
950 return count;
951 }
952
222f1806 953 if (!strcmp(name, "debug")) {
1da177e4 954 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 955 if (len < 0)
222f1806 956 return len;
63adc6fb 957
1da177e4 958 i += len;
222f1806 959 debug = value;
1da177e4
LT		 960 sprintf(pg_result, "OK: debug=%u", debug);
961 return count;
962 }
963
222f1806 964 if (!strcmp(name, "frags")) {
1da177e4 965 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 966 if (len < 0)
222f1806 967 return len;
63adc6fb 968
1da177e4
LT		 969 i += len;
970 pkt_dev->nfrags = value;
971 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
972 return count;
973 }
974 if (!strcmp(name, "delay")) {
975 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 976 if (len < 0)
222f1806 977 return len;
63adc6fb 978
1da177e4 979 i += len;
fd29cf72
SH		 980 if (value == 0x7FFFFFFF)
981 pkt_dev->delay = ULLONG_MAX;
982 else
9240d715 983 pkt_dev->delay = (u64)value;
fd29cf72
SH		 984
985 sprintf(pg_result, "OK: delay=%llu",
986 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 987 return count;
988 }
43d28b65
DT		 989 if (!strcmp(name, "rate")) {
990 len = num_arg(&user_buffer[i], 10, &value);
991 if (len < 0)
992 return len;
993
994 i += len;
995 if (!value)
996 return len;
997 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
998 if (debug)
f9467eae 999 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1000
1001 sprintf(pg_result, "OK: rate=%lu", value);
1002 return count;
1003 }
1004 if (!strcmp(name, "ratep")) {
1005 len = num_arg(&user_buffer[i], 10, &value);
1006 if (len < 0)
1007 return len;
1008
1009 i += len;
1010 if (!value)
1011 return len;
1012 pkt_dev->delay = NSEC_PER_SEC/value;
1013 if (debug)
f9467eae 1014 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1015
1016 sprintf(pg_result, "OK: rate=%lu", value);
1017 return count;
1018 }
222f1806 1019 if (!strcmp(name, "udp_src_min")) {
1da177e4 1020 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1021 if (len < 0)
222f1806 1022 return len;
63adc6fb 1023
1da177e4 1024 i += len;
222f1806
LC		 1025 if (value != pkt_dev->udp_src_min) {
1026 pkt_dev->udp_src_min = value;
1027 pkt_dev->cur_udp_src = value;
1028 }
1da177e4
LT		 1029 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1030 return count;
1031 }
222f1806 1032 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1033 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1034 if (len < 0)
222f1806 1035 return len;
63adc6fb 1036
1da177e4 1037 i += len;
222f1806
LC		 1038 if (value != pkt_dev->udp_dst_min) {
1039 pkt_dev->udp_dst_min = value;
1040 pkt_dev->cur_udp_dst = value;
1041 }
1da177e4
LT		 1042 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1043 return count;
1044 }
222f1806 1045 if (!strcmp(name, "udp_src_max")) {
1da177e4 1046 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1047 if (len < 0)
222f1806 1048 return len;
63adc6fb 1049
1da177e4 1050 i += len;
222f1806
LC		 1051 if (value != pkt_dev->udp_src_max) {
1052 pkt_dev->udp_src_max = value;
1053 pkt_dev->cur_udp_src = value;
1054 }
1da177e4
LT		 1055 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1056 return count;
1057 }
222f1806 1058 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1059 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1060 if (len < 0)
222f1806 1061 return len;
63adc6fb 1062
1da177e4 1063 i += len;
222f1806
LC		 1064 if (value != pkt_dev->udp_dst_max) {
1065 pkt_dev->udp_dst_max = value;
1066 pkt_dev->cur_udp_dst = value;
1067 }
1da177e4
LT		 1068 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1069 return count;
1070 }
1071 if (!strcmp(name, "clone_skb")) {
1072 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1073 if (len < 0)
222f1806 1074 return len;
d8873315
NH		 1075 if ((value > 0) &&
1076 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1077 return -ENOTSUPP;
1da177e4 1078 i += len;
222f1806
LC		 1079 pkt_dev->clone_skb = value;
1080
1da177e4
LT		 1081 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1082 return count;
1083 }
1084 if (!strcmp(name, "count")) {
1085 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1086 if (len < 0)
222f1806 1087 return len;
63adc6fb 1088
1da177e4
LT		 1089 i += len;
1090 pkt_dev->count = value;
1091 sprintf(pg_result, "OK: count=%llu",
222f1806 1092 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1093 return count;
1094 }
1095 if (!strcmp(name, "src_mac_count")) {
1096 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1097 if (len < 0)
222f1806 1098 return len;
63adc6fb 1099
1da177e4
LT		 1100 i += len;
1101 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1102 pkt_dev->src_mac_count = value;
1103 pkt_dev->cur_src_mac_offset = 0;
1104 }
1105 sprintf(pg_result, "OK: src_mac_count=%d",
1106 pkt_dev->src_mac_count);
1da177e4
LT		 1107 return count;
1108 }
1109 if (!strcmp(name, "dst_mac_count")) {
1110 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1111 if (len < 0)
222f1806 1112 return len;
63adc6fb 1113
1da177e4
LT		 1114 i += len;
1115 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1116 pkt_dev->dst_mac_count = value;
1117 pkt_dev->cur_dst_mac_offset = 0;
1118 }
1119 sprintf(pg_result, "OK: dst_mac_count=%d",
1120 pkt_dev->dst_mac_count);
1da177e4
LT		 1121 return count;
1122 }
e99b99b4
RO		 1123 if (!strcmp(name, "node")) {
1124 len = num_arg(&user_buffer[i], 10, &value);
1125 if (len < 0)
1126 return len;
1127
1128 i += len;
1129
1130 if (node_possible(value)) {
1131 pkt_dev->node = value;
1132 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1133 if (pkt_dev->page) {
1134 put_page(pkt_dev->page);
1135 pkt_dev->page = NULL;
1136 }
e99b99b4
RO		 1137 }
1138 else
1139 sprintf(pg_result, "ERROR: node not possible");
1140 return count;
1141 }
1da177e4 1142 if (!strcmp(name, "flag")) {
222f1806
LC		 1143 char f[32];
1144 memset(f, 0, 32);
1da177e4 1145 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1146 if (len < 0)
222f1806 1147 return len;
63adc6fb 1148
1da177e4
LT		 1149 if (copy_from_user(f, &user_buffer[i], len))
1150 return -EFAULT;
1151 i += len;
222f1806
LC		 1152 if (strcmp(f, "IPSRC_RND") == 0)
1153 pkt_dev->flags |= F_IPSRC_RND;
1154
1155 else if (strcmp(f, "!IPSRC_RND") == 0)
1156 pkt_dev->flags &= ~F_IPSRC_RND;
1157
1158 else if (strcmp(f, "TXSIZE_RND") == 0)
1159 pkt_dev->flags |= F_TXSIZE_RND;
1160
1161 else if (strcmp(f, "!TXSIZE_RND") == 0)
1162 pkt_dev->flags &= ~F_TXSIZE_RND;
1163
1164 else if (strcmp(f, "IPDST_RND") == 0)
1165 pkt_dev->flags |= F_IPDST_RND;
1166
1167 else if (strcmp(f, "!IPDST_RND") == 0)
1168 pkt_dev->flags &= ~F_IPDST_RND;
1169
1170 else if (strcmp(f, "UDPSRC_RND") == 0)
1171 pkt_dev->flags |= F_UDPSRC_RND;
1172
1173 else if (strcmp(f, "!UDPSRC_RND") == 0)
1174 pkt_dev->flags &= ~F_UDPSRC_RND;
1175
1176 else if (strcmp(f, "UDPDST_RND") == 0)
1177 pkt_dev->flags |= F_UDPDST_RND;
1178
1179 else if (strcmp(f, "!UDPDST_RND") == 0)
1180 pkt_dev->flags &= ~F_UDPDST_RND;
1181
1182 else if (strcmp(f, "MACSRC_RND") == 0)
1183 pkt_dev->flags |= F_MACSRC_RND;
1184
1185 else if (strcmp(f, "!MACSRC_RND") == 0)
1186 pkt_dev->flags &= ~F_MACSRC_RND;
1187
1188 else if (strcmp(f, "MACDST_RND") == 0)
1189 pkt_dev->flags |= F_MACDST_RND;
1190
1191 else if (strcmp(f, "!MACDST_RND") == 0)
1192 pkt_dev->flags &= ~F_MACDST_RND;
1193
ca6549af
SW		 1194 else if (strcmp(f, "MPLS_RND") == 0)
1195 pkt_dev->flags |= F_MPLS_RND;
1196
1197 else if (strcmp(f, "!MPLS_RND") == 0)
1198 pkt_dev->flags &= ~F_MPLS_RND;
1199
34954ddc
FF		 1200 else if (strcmp(f, "VID_RND") == 0)
1201 pkt_dev->flags |= F_VID_RND;
1202
1203 else if (strcmp(f, "!VID_RND") == 0)
1204 pkt_dev->flags &= ~F_VID_RND;
1205
1206 else if (strcmp(f, "SVID_RND") == 0)
1207 pkt_dev->flags |= F_SVID_RND;
1208
1209 else if (strcmp(f, "!SVID_RND") == 0)
1210 pkt_dev->flags &= ~F_SVID_RND;
1211
007a531b
JHS		 1212 else if (strcmp(f, "FLOW_SEQ") == 0)
1213 pkt_dev->flags |= F_FLOW_SEQ;
1214
45b270f8
RO		 1215 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1216 pkt_dev->flags |= F_QUEUE_MAP_RND;
1217
1218 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1219 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1220
1221 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1222 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1223
1224 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1225 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1226#ifdef CONFIG_XFRM
1227 else if (strcmp(f, "IPSEC") == 0)
1228 pkt_dev->flags |= F_IPSEC_ON;
1229#endif
1230
1ca7768c
FF		 1231 else if (strcmp(f, "!IPV6") == 0)
1232 pkt_dev->flags &= ~F_IPV6;
1233
e99b99b4
RO		 1234 else if (strcmp(f, "NODE_ALLOC") == 0)
1235 pkt_dev->flags |= F_NODE;
1236
1237 else if (strcmp(f, "!NODE_ALLOC") == 0)
1238 pkt_dev->flags &= ~F_NODE;
1239
c26bf4a5
TG		 1240 else if (strcmp(f, "UDPCSUM") == 0)
1241 pkt_dev->flags |= F_UDPCSUM;
1242
1243 else if (strcmp(f, "!UDPCSUM") == 0)
1244 pkt_dev->flags &= ~F_UDPCSUM;
1245
222f1806
LC		 1246 else {
1247 sprintf(pg_result,
1248 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1249 f,
1ca7768c 1250 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1251 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1252 return count;
1253 }
1da177e4
LT		 1254 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1255 return count;
1256 }
1257 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1258 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1259 if (len < 0)
222f1806 1260 return len;
1da177e4 1261
222f1806 1262 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1263 return -EFAULT;
222f1806
LC		 1264 buf[len] = 0;
1265 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1266 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1267 strncpy(pkt_dev->dst_min, buf, len);
1268 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1269 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1270 }
1271 if (debug)
f342cda7 1272 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1273 i += len;
1da177e4
LT		 1274 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1275 return count;
1276 }
1277 if (!strcmp(name, "dst_max")) {
1278 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1279 if (len < 0)
222f1806 1280 return len;
63adc6fb 1281
1da177e4 1282
222f1806 1283 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1284 return -EFAULT;
1285
222f1806
LC		 1286 buf[len] = 0;
1287 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1288 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1289 strncpy(pkt_dev->dst_max, buf, len);
1290 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1291 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1292 }
1293 if (debug)
f342cda7 1294 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1295 i += len;
1296 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1297 return count;
1298 }
1299 if (!strcmp(name, "dst6")) {
1300 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1301 if (len < 0)
1302 return len;
1da177e4
LT		 1303
1304 pkt_dev->flags |= F_IPV6;
1305
222f1806 1306 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1307 return -EFAULT;
222f1806 1308 buf[len] = 0;
1da177e4 1309
c468fb13 1310 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1311 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1312
4e3fd7a0 1313 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1314
222f1806 1315 if (debug)
f342cda7 1316 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1317
222f1806 1318 i += len;
1da177e4
LT		 1319 sprintf(pg_result, "OK: dst6=%s", buf);
1320 return count;
1321 }
1322 if (!strcmp(name, "dst6_min")) {
1323 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1324 if (len < 0)
1325 return len;
1da177e4
LT		 1326
1327 pkt_dev->flags |= F_IPV6;
1328
222f1806 1329 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1330 return -EFAULT;
222f1806 1331 buf[len] = 0;
1da177e4 1332
c468fb13 1333 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1334 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1335
4e3fd7a0 1336 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1337 if (debug)
f342cda7 1338 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1339
222f1806 1340 i += len;
1da177e4
LT		 1341 sprintf(pg_result, "OK: dst6_min=%s", buf);
1342 return count;
1343 }
1344 if (!strcmp(name, "dst6_max")) {
1345 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1346 if (len < 0)
1347 return len;
1da177e4
LT		 1348
1349 pkt_dev->flags |= F_IPV6;
1350
222f1806 1351 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1352 return -EFAULT;
222f1806 1353 buf[len] = 0;
1da177e4 1354
c468fb13 1355 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1356 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1357
222f1806 1358 if (debug)
f342cda7 1359 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1360
222f1806 1361 i += len;
1da177e4
LT		 1362 sprintf(pg_result, "OK: dst6_max=%s", buf);
1363 return count;
1364 }
1365 if (!strcmp(name, "src6")) {
1366 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1367 if (len < 0)
1368 return len;
1da177e4
LT		 1369
1370 pkt_dev->flags |= F_IPV6;
1371
222f1806 1372 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1373 return -EFAULT;
222f1806 1374 buf[len] = 0;
1da177e4 1375
c468fb13 1376 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1377 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1378
4e3fd7a0 1379 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1380
222f1806 1381 if (debug)
f342cda7 1382 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1383
1384 i += len;
1da177e4
LT		 1385 sprintf(pg_result, "OK: src6=%s", buf);
1386 return count;
1387 }
1388 if (!strcmp(name, "src_min")) {
1389 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1390 if (len < 0)
222f1806 1391 return len;
63adc6fb 1392
222f1806 1393 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1394 return -EFAULT;
222f1806
LC		 1395 buf[len] = 0;
1396 if (strcmp(buf, pkt_dev->src_min) != 0) {
1397 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1398 strncpy(pkt_dev->src_min, buf, len);
1399 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1400 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1401 }
1402 if (debug)
f342cda7 1403 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1404 i += len;
1405 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1406 return count;
1407 }
1408 if (!strcmp(name, "src_max")) {
1409 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1410 if (len < 0)
222f1806 1411 return len;
63adc6fb 1412
222f1806 1413 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1414 return -EFAULT;
222f1806
LC		 1415 buf[len] = 0;
1416 if (strcmp(buf, pkt_dev->src_max) != 0) {
1417 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1418 strncpy(pkt_dev->src_max, buf, len);
1419 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1420 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1421 }
1422 if (debug)
f342cda7 1423 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1424 i += len;
1425 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1426 return count;
1427 }
1428 if (!strcmp(name, "dst_mac")) {
1da177e4 1429 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1430 if (len < 0)
222f1806 1431 return len;
63adc6fb 1432
1da177e4 1433 memset(valstr, 0, sizeof(valstr));
222f1806 1434 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1435 return -EFAULT;
1da177e4 1436
4940fc88
AD		 1437 if (!mac_pton(valstr, pkt_dev->dst_mac))
1438 return -EINVAL;
1da177e4 1439 /* Set up Dest MAC */
4940fc88 1440 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1441
4940fc88 1442 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1443 return count;
1444 }
1445 if (!strcmp(name, "src_mac")) {
1da177e4 1446 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1447 if (len < 0)
222f1806 1448 return len;
63adc6fb 1449
1da177e4 1450 memset(valstr, 0, sizeof(valstr));
222f1806 1451 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1452 return -EFAULT;
1da177e4 1453
4940fc88
AD		 1454 if (!mac_pton(valstr, pkt_dev->src_mac))
1455 return -EINVAL;
ce5d0b47 1456 /* Set up Src MAC */
4940fc88 1457 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1458
4940fc88 1459 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1460 return count;
1461 }
1462
222f1806
LC		 1463 if (!strcmp(name, "clear_counters")) {
1464 pktgen_clear_counters(pkt_dev);
1465 sprintf(pg_result, "OK: Clearing counters.\n");
1466 return count;
1467 }
1da177e4
LT		 1468
1469 if (!strcmp(name, "flows")) {
1470 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1471 if (len < 0)
222f1806 1472 return len;
63adc6fb 1473
1da177e4
LT		 1474 i += len;
1475 if (value > MAX_CFLOWS)
1476 value = MAX_CFLOWS;
1477
1478 pkt_dev->cflows = value;
1479 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1480 return count;
1481 }
1482
de4aee7d
FD		 1483 if (!strcmp(name, "spi")) {
1484 len = num_arg(&user_buffer[i], 10, &value);
1485 if (len < 0)
1486 return len;
1487
1488 i += len;
1489 pkt_dev->spi = value;
1490 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1491 return count;
1492 }
1493
1da177e4
LT		 1494 if (!strcmp(name, "flowlen")) {
1495 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1496 if (len < 0)
222f1806 1497 return len;
63adc6fb 1498
1da177e4
LT		 1499 i += len;
1500 pkt_dev->lflow = value;
1501 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1502 return count;
1503 }
222f1806 1504
45b270f8
RO		 1505 if (!strcmp(name, "queue_map_min")) {
1506 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1507 if (len < 0)
45b270f8 1508 return len;
63adc6fb 1509
45b270f8
RO		 1510 i += len;
1511 pkt_dev->queue_map_min = value;
1512 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1513 return count;
1514 }
1515
1516 if (!strcmp(name, "queue_map_max")) {
1517 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1518 if (len < 0)
45b270f8 1519 return len;
63adc6fb 1520
45b270f8
RO		 1521 i += len;
1522 pkt_dev->queue_map_max = value;
1523 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1524 return count;
1525 }
1526
ca6549af 1527 if (!strcmp(name, "mpls")) {
95c96174 1528 unsigned int n, cnt;
cfcabdcc 1529
ca6549af 1530 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1531 if (len < 0)
1532 return len;
ca6549af 1533 i += len;
cfcabdcc 1534 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1535 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1536 cnt += sprintf(pg_result + cnt,
1537 "%08x%s", ntohl(pkt_dev->labels[n]),
1538 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1539
1540 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1541 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1542 pkt_dev->svlan_id = 0xffff;
1543
1544 if (debug)
f342cda7 1545 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1546 }
1547 return count;
1548 }
1549
1550 if (!strcmp(name, "vlan_id")) {
1551 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1552 if (len < 0)
34954ddc 1553 return len;
63adc6fb 1554
34954ddc
FF		 1555 i += len;
1556 if (value <= 4095) {
1557 pkt_dev->vlan_id = value; /* turn on VLAN */
1558
1559 if (debug)
f342cda7 1560 pr_debug("VLAN turned on\n");
34954ddc
FF		 1561
1562 if (debug && pkt_dev->nr_labels)
f342cda7 1563 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1564
1565 pkt_dev->nr_labels = 0; /* turn off MPLS */
1566 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1567 } else {
1568 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1569 pkt_dev->svlan_id = 0xffff;
1570
1571 if (debug)
f342cda7 1572 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1573 }
1574 return count;
1575 }
1576
1577 if (!strcmp(name, "vlan_p")) {
1578 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1579 if (len < 0)
34954ddc 1580 return len;
63adc6fb 1581
34954ddc
FF		 1582 i += len;
1583 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1584 pkt_dev->vlan_p = value;
1585 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1586 } else {
1587 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1588 }
1589 return count;
1590 }
1591
1592 if (!strcmp(name, "vlan_cfi")) {
1593 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1594 if (len < 0)
34954ddc 1595 return len;
63adc6fb 1596
34954ddc
FF		 1597 i += len;
1598 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1599 pkt_dev->vlan_cfi = value;
1600 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1601 } else {
1602 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1603 }
1604 return count;
1605 }
1606
1607 if (!strcmp(name, "svlan_id")) {
1608 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1609 if (len < 0)
34954ddc 1610 return len;
63adc6fb 1611
34954ddc
FF		 1612 i += len;
1613 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1614 pkt_dev->svlan_id = value; /* turn on SVLAN */
1615
1616 if (debug)
f342cda7 1617 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1618
1619 if (debug && pkt_dev->nr_labels)
f342cda7 1620 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1621
1622 pkt_dev->nr_labels = 0; /* turn off MPLS */
1623 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1624 } else {
1625 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1626 pkt_dev->svlan_id = 0xffff;
1627
1628 if (debug)
f342cda7 1629 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1630 }
1631 return count;
1632 }
1633
1634 if (!strcmp(name, "svlan_p")) {
1635 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1636 if (len < 0)
34954ddc 1637 return len;
63adc6fb 1638
34954ddc
FF		 1639 i += len;
1640 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1641 pkt_dev->svlan_p = value;
1642 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1643 } else {
1644 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1645 }
1646 return count;
1647 }
1648
1649 if (!strcmp(name, "svlan_cfi")) {
1650 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1651 if (len < 0)
34954ddc 1652 return len;
63adc6fb 1653
34954ddc
FF		 1654 i += len;
1655 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1656 pkt_dev->svlan_cfi = value;
1657 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1658 } else {
1659 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1660 }
ca6549af
SW		 1661 return count;
1662 }
1663
1ca7768c
FF		 1664 if (!strcmp(name, "tos")) {
1665 __u32 tmp_value = 0;
1666 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1667 if (len < 0)
1ca7768c 1668 return len;
63adc6fb 1669
1ca7768c
FF		 1670 i += len;
1671 if (len == 2) {
1672 pkt_dev->tos = tmp_value;
1673 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1674 } else {
1675 sprintf(pg_result, "ERROR: tos must be 00-ff");
1676 }
1677 return count;
1678 }
1679
1680 if (!strcmp(name, "traffic_class")) {
1681 __u32 tmp_value = 0;
1682 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1683 if (len < 0)
1ca7768c 1684 return len;
63adc6fb 1685
1ca7768c
FF		 1686 i += len;
1687 if (len == 2) {
1688 pkt_dev->traffic_class = tmp_value;
1689 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1690 } else {
1691 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1692 }
1693 return count;
1694 }
1695
9e50e3ac
JF		 1696 if (!strcmp(name, "skb_priority")) {
1697 len = num_arg(&user_buffer[i], 9, &value);
1698 if (len < 0)
1699 return len;
1700
1701 i += len;
1702 pkt_dev->skb_priority = value;
1703 sprintf(pg_result, "OK: skb_priority=%i",
1704 pkt_dev->skb_priority);
1705 return count;
1706 }
1707
1da177e4
LT		 1708 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1709 return -EINVAL;
1710}
1711
d50a6b56 1712static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1713{
d9dda78b 1714 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1715}
1da177e4 1716
9a32144e 1717static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1718 .owner = THIS_MODULE,
1719 .open = pktgen_if_open,
1720 .read = seq_read,
1721 .llseek = seq_lseek,
1722 .write = pktgen_if_write,
1723 .release = single_release,
d50a6b56 1724};
1da177e4 1725
d50a6b56
SH		 1726static int pktgen_thread_show(struct seq_file *seq, void *v)
1727{
222f1806 1728 struct pktgen_thread *t = seq->private;
648fda74 1729 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1730
1731 BUG_ON(!t);
1da177e4 1732
222f1806 1733 seq_printf(seq, "Running: ");
1da177e4 1734
222f1806 1735 if_lock(t);
c26a8016 1736 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1737 if (pkt_dev->running)
593f63b0 1738 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1739
222f1806
LC		 1740 seq_printf(seq, "\nStopped: ");
1741
c26a8016 1742 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1743 if (!pkt_dev->running)
593f63b0 1744 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1745
1746 if (t->result[0])
d50a6b56 1747 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1748 else
d50a6b56 1749 seq_printf(seq, "\nResult: NA\n");
1da177e4 1750
222f1806 1751 if_unlock(t);
1da177e4 1752
d50a6b56 1753 return 0;
1da177e4
LT		 1754}
1755
d50a6b56 1756static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1757 const char __user * user_buffer,
1758 size_t count, loff_t * offset)
1da177e4 1759{
8a994a71 1760 struct seq_file *seq = file->private_data;
222f1806 1761 struct pktgen_thread *t = seq->private;
d6182223 1762 int i, max, len, ret;
1da177e4 1763 char name[40];
222f1806 1764 char *pg_result;
d50a6b56 1765
1da177e4 1766 if (count < 1) {
222f1806 1767 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1768 return -EINVAL;
1769 }
d50a6b56 1770
d6182223
PG		 1771 max = count;
1772 len = count_trail_chars(user_buffer, max);
222f1806 1773 if (len < 0)
d50a6b56
SH		 1774 return len;
1775
d6182223 1776 i = len;
d50a6b56 1777
1da177e4
LT		 1778 /* Read variable name */
1779
1780 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1781 if (len < 0)
d50a6b56 1782 return len;
222f1806 1783
1da177e4
LT		 1784 memset(name, 0, sizeof(name));
1785 if (copy_from_user(name, &user_buffer[i], len))
1786 return -EFAULT;
1787 i += len;
d50a6b56 1788
222f1806 1789 max = count - i;
1da177e4 1790 len = count_trail_chars(&user_buffer[i], max);
222f1806 1791 if (len < 0)
d50a6b56
SH		 1792 return len;
1793
1da177e4
LT		 1794 i += len;
1795
d50a6b56 1796 if (debug)
f342cda7 1797 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1798
222f1806 1799 if (!t) {
f9467eae 1800 pr_err("ERROR: No thread\n");
1da177e4
LT		 1801 ret = -EINVAL;
1802 goto out;
1803 }
1804
1805 pg_result = &(t->result[0]);
1806
222f1806
LC		 1807 if (!strcmp(name, "add_device")) {
1808 char f[32];
1809 memset(f, 0, 32);
1da177e4 1810 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1811 if (len < 0) {
1812 ret = len;
1da177e4
LT		 1813 goto out;
1814 }
222f1806 1815 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1816 return -EFAULT;
1817 i += len;
6146e6a4 1818 mutex_lock(&pktgen_thread_lock);
604dfd6e 1819 ret = pktgen_add_device(t, f);
6146e6a4 1820 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1821 if (!ret) {
1822 ret = count;
1823 sprintf(pg_result, "OK: add_device=%s", f);
1824 } else
1825 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1826 goto out;
1827 }
1828
222f1806 1829 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1830 mutex_lock(&pktgen_thread_lock);
95ed63f7 1831 t->control |= T_REMDEVALL;
6146e6a4 1832 mutex_unlock(&pktgen_thread_lock);
222f1806 1833 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1834 ret = count;
222f1806 1835 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1836 goto out;
1837 }
1838
222f1806 1839 if (!strcmp(name, "max_before_softirq")) {
b163911f 1840 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1841 ret = count;
1da177e4
LT		 1842 goto out;
1843 }
1844
1845 ret = -EINVAL;
222f1806 1846out:
1da177e4
LT		 1847 return ret;
1848}
1849
d50a6b56 1850static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1851{
d9dda78b 1852 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT		 1853}
1854
9a32144e 1855static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1856 .owner = THIS_MODULE,
1857 .open = pktgen_thread_open,
1858 .read = seq_read,
1859 .llseek = seq_lseek,
1860 .write = pktgen_thread_write,
1861 .release = single_release,
d50a6b56 1862};
1da177e4
LT		 1863
1864/* Think find or remove for NN */
4e58a027
CW		 1865static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1866 const char *ifname, int remove)
1da177e4
LT		 1867{
1868 struct pktgen_thread *t;
1869 struct pktgen_dev *pkt_dev = NULL;
3e984840 1870 bool exact = (remove == FIND);
1da177e4 1871
4e58a027 1872 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1873 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1874 if (pkt_dev) {
222f1806
LC		 1875 if (remove) {
1876 if_lock(t);
1877 pkt_dev->removal_mark = 1;
1878 t->control |= T_REMDEV;
1879 if_unlock(t);
1880 }
1da177e4
LT		 1881 break;
1882 }
1da177e4 1883 }
222f1806 1884 return pkt_dev;
1da177e4
LT		 1885}
1886
95ed63f7
AK		 1887/*
1888 * mark a device for removal
1889 */
4e58a027 1890static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1891{
1892 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1893 const int max_tries = 10, msec_per_try = 125;
1894 int i = 0;
95ed63f7 1895
6146e6a4 1896 mutex_lock(&pktgen_thread_lock);
f9467eae 1897 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1898
222f1806 1899 while (1) {
95ed63f7 1900
4e58a027 1901 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1902 if (pkt_dev == NULL)
1903 break; /* success */
95ed63f7 1904
6146e6a4 1905 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1906 pr_debug("%s: waiting for %s to disappear....\n",
1907 __func__, ifname);
95ed63f7 1908 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1909 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1910
1911 if (++i >= max_tries) {
f9467eae
JP		 1912 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1913 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1914 break;
1915 }
1916
1917 }
1918
6146e6a4 1919 mutex_unlock(&pktgen_thread_lock);
39df232f 1920}
95ed63f7 1921
4e58a027 1922static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 1923{
1924 struct pktgen_thread *t;
1925
4e58a027 1926 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 1927 struct pktgen_dev *pkt_dev;
1928
1929 list_for_each_entry(pkt_dev, &t->if_list, list) {
1930 if (pkt_dev->odev != dev)
1931 continue;
1932
a8ca16ea 1933 proc_remove(pkt_dev->entry);
39df232f 1934
2975315b 1935 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1936 pn->proc_dir,
2975315b
AD		 1937 &pktgen_if_fops,
1938 pkt_dev);
39df232f 1939 if (!pkt_dev->entry)
f9467eae
JP		 1940 pr_err("can't move proc entry for '%s'\n",
1941 dev->name);
39df232f
SH		 1942 break;
1943 }
1944 }
1da177e4
LT		 1945}
1946
222f1806
LC		 1947static int pktgen_device_event(struct notifier_block *unused,
1948 unsigned long event, void *ptr)
1da177e4 1949{
351638e7 1950 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 1951 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1952
4e58a027 1953 if (pn->pktgen_exiting)
e9dc8653
EB		 1954 return NOTIFY_DONE;
1955
1da177e4
LT		 1956 /* It is OK that we do not hold the group lock right now,
1957 * as we run under the RTNL lock.
1958 */
1959
1960 switch (event) {
39df232f 1961 case NETDEV_CHANGENAME:
4e58a027 1962 pktgen_change_name(pn, dev);
1da177e4 1963 break;
222f1806 1964
1da177e4 1965 case NETDEV_UNREGISTER:
4e58a027 1966 pktgen_mark_device(pn, dev->name);
1da177e4 1967 break;
3ff50b79 1968 }
1da177e4
LT		 1969
1970 return NOTIFY_DONE;
1971}
1972
4e58a027
CW		 1973static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
1974 struct pktgen_dev *pkt_dev,
63adc6fb 1975 const char *ifname)
e6fce5b9
RO		 1976{
1977 char b[IFNAMSIZ+5];
d6182223 1978 int i;
e6fce5b9 1979
63adc6fb
SH		 1980 for (i = 0; ifname[i] != '@'; i++) {
1981 if (i == IFNAMSIZ)
e6fce5b9
RO		 1982 break;
1983
1984 b[i] = ifname[i];
1985 }
1986 b[i] = 0;
1987
4e58a027 1988 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 1989}
1990
1991
1da177e4
LT		 1992/* Associate pktgen_dev with a device. */
1993
4e58a027
CW		 1994static int pktgen_setup_dev(const struct pktgen_net *pn,
1995 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1996{
1da177e4 1997 struct net_device *odev;
39df232f 1998 int err;
1da177e4
LT		 1999
2000 /* Clean old setups */
1da177e4
LT		 2001 if (pkt_dev->odev) {
2002 dev_put(pkt_dev->odev);
222f1806
LC		 2003 pkt_dev->odev = NULL;
2004 }
1da177e4 2005
4e58a027 2006 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 2007 if (!odev) {
f9467eae 2008 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2009 return -ENODEV;
1da177e4 2010 }
39df232f 2011
1da177e4 2012 if (odev->type != ARPHRD_ETHER) {
f9467eae 2013 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2014 err = -EINVAL;
2015 } else if (!netif_running(odev)) {
f9467eae 2016 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2017 err = -ENETDOWN;
2018 } else {
2019 pkt_dev->odev = odev;
2020 return 0;
1da177e4 2021 }
1da177e4 2022
1da177e4 2023 dev_put(odev);
39df232f 2024 return err;
1da177e4
LT		 2025}
2026
2027/* Read pkt_dev from the interface and set up internal pktgen_dev
2028 * structure to have the right information to create/send packets
2029 */
2030static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2031{
64c00d81
AG		 2032 int ntxq;
2033
222f1806 2034 if (!pkt_dev->odev) {
f9467eae 2035 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2036 sprintf(pkt_dev->result,
2037 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2038 return;
2039 }
2040
64c00d81
AG		 2041 /* make sure that we don't pick a non-existing transmit queue */
2042 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2043
64c00d81 2044 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2045 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2046 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2047 pkt_dev->odevname);
26e29eed 2048 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2049 }
88271660 2050 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2051 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2052 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2053 pkt_dev->odevname);
26e29eed 2054 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2055 }
2056
222f1806 2057 /* Default to the interface's mac if not explicitly set. */
1da177e4 2058
f404e9a6 2059 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2060 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2061
222f1806 2062 /* Set up Dest MAC */
f404e9a6 2063 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2064
222f1806 2065 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2066 int i, set = 0, err = 1;
2067 struct inet6_dev *idev;
2068
68bf9f0b
AW		 2069 if (pkt_dev->min_pkt_size == 0) {
2070 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2071 + sizeof(struct udphdr)
2072 + sizeof(struct pktgen_hdr)
2073 + pkt_dev->pkt_overhead;
2074 }
2075
222f1806
LC		 2076 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2077 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2078 set = 1;
2079 break;
2080 }
2081
222f1806
LC		 2082 if (!set) {
2083
1da177e4
LT		 2084 /*
2085 * Use linklevel address if unconfigured.
2086 *
2087 * use ipv6_get_lladdr if/when it's get exported
2088 */
2089
8814c4b5 2090 rcu_read_lock();
63adc6fb
SH		 2091 idev = __in6_dev_get(pkt_dev->odev);
2092 if (idev) {
1da177e4
LT		 2093 struct inet6_ifaddr *ifp;
2094
2095 read_lock_bh(&idev->lock);
4c139b8c
AW		 2096 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2097 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2098 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2099 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2100 err = 0;
2101 break;
2102 }
2103 }
2104 read_unlock_bh(&idev->lock);
2105 }
8814c4b5 2106 rcu_read_unlock();
222f1806 2107 if (err)
f9467eae 2108 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2109 }
222f1806 2110 } else {
68bf9f0b
AW		 2111 if (pkt_dev->min_pkt_size == 0) {
2112 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2113 + sizeof(struct udphdr)
2114 + sizeof(struct pktgen_hdr)
2115 + pkt_dev->pkt_overhead;
2116 }
2117
1da177e4
LT		 2118 pkt_dev->saddr_min = 0;
2119 pkt_dev->saddr_max = 0;
2120 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2121
2122 struct in_device *in_dev;
1da177e4
LT		 2123
2124 rcu_read_lock();
e5ed6399 2125 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2126 if (in_dev) {
2127 if (in_dev->ifa_list) {
222f1806
LC		 2128 pkt_dev->saddr_min =
2129 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2130 pkt_dev->saddr_max = pkt_dev->saddr_min;
2131 }
1da177e4
LT		 2132 }
2133 rcu_read_unlock();
222f1806 2134 } else {
1da177e4
LT		 2135 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2136 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2137 }
2138
2139 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2140 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2141 }
222f1806 2142 /* Initialize current values. */
68bf9f0b
AW		 2143 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2144 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2145 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2146
222f1806
LC		 2147 pkt_dev->cur_dst_mac_offset = 0;
2148 pkt_dev->cur_src_mac_offset = 0;
2149 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2150 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2151 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2152 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2153 pkt_dev->nflows = 0;
2154}
2155
fd29cf72
SH		 2156
2157static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2158{
ef87979c 2159 ktime_t start_time, end_time;
417bc4b8 2160 s64 remaining;
2bc481cf
SH		 2161 struct hrtimer_sleeper t;
2162
2163 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2164 hrtimer_set_expires(&t.timer, spin_until);
2165
43d28b65 2166 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2167 if (remaining <= 0) {
2168 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2169 return;
417bc4b8 2170 }
2bc481cf 2171
398f382c 2172 start_time = ktime_get();
33136d12
ED		 2173 if (remaining < 100000) {
2174 /* for small delays (<100us), just loop until limit is reached */
2175 do {
398f382c
DB		 2176 end_time = ktime_get();
2177 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2178 } else {
2bc481cf
SH		 2179 /* see do_nanosleep */
2180 hrtimer_init_sleeper(&t, current);
2181 do {
2182 set_current_state(TASK_INTERRUPTIBLE);
2183 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2184 if (!hrtimer_active(&t.timer))
2185 t.task = NULL;
2186
2187 if (likely(t.task))
1da177e4 2188 schedule();
1da177e4 2189
2bc481cf
SH		 2190 hrtimer_cancel(&t.timer);
2191 } while (t.task && pkt_dev->running && !signal_pending(current));
2192 __set_current_state(TASK_RUNNING);
398f382c 2193 end_time = ktime_get();
1da177e4 2194 }
ef87979c
SH		 2195
2196 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2197 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2198}
2199
16dab72f
JHS		 2200static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2201{
a553e4a6 2202 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2203 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2204 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2205 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2206}
2207
648fda74 2208static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2209{
648fda74 2210 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2211}
2212
2213static inline int f_pick(struct pktgen_dev *pkt_dev)
2214{
2215 int flow = pkt_dev->curfl;
2216
2217 if (pkt_dev->flags & F_FLOW_SEQ) {
2218 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2219 /* reset time */
2220 pkt_dev->flows[flow].count = 0;
1211a645 2221 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2222 pkt_dev->curfl += 1;
2223 if (pkt_dev->curfl >= pkt_dev->cflows)
2224 pkt_dev->curfl = 0; /*reset */
2225 }
2226 } else {
33d7c5e5 2227 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2228 pkt_dev->curfl = flow;
007a531b 2229
1211a645 2230 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2231 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2232 pkt_dev->flows[flow].flags = 0;
2233 }
007a531b
JHS		 2234 }
2235
2236 return pkt_dev->curfl;
2237}
2238
a553e4a6
JHS		 2239
2240#ifdef CONFIG_XFRM
2241/* If there was already an IPSEC SA, we keep it as is, else
2242 * we go look for it ...
2243*/
bd55775c 2244#define DUMMY_MARK 0
fea1ab0f 2245static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2246{
2247 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2248 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6
JHS		 2249 if (!x) {
2250 /*slow path: we dont already have xfrm_state*/
4e58a027 2251 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
5447c5e4 2252 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2253 (xfrm_address_t *)&pkt_dev->cur_saddr,
2254 AF_INET,
2255 pkt_dev->ipsmode,
2256 pkt_dev->ipsproto, 0);
2257 if (x) {
2258 pkt_dev->flows[flow].x = x;
2259 set_pkt_overhead(pkt_dev);
63adc6fb 2260 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2261 }
2262
2263 }
2264}
2265#endif
fd2ea0a7
DM		 2266static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2267{
e6fce5b9
RO		 2268
2269 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2270 pkt_dev->cur_queue_map = smp_processor_id();
2271
896a7cf8 2272 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2273 __u16 t;
2274 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2275 t = prandom_u32() %
fd2ea0a7
DM		 2276 (pkt_dev->queue_map_max -
2277 pkt_dev->queue_map_min + 1)
2278 + pkt_dev->queue_map_min;
2279 } else {
2280 t = pkt_dev->cur_queue_map + 1;
2281 if (t > pkt_dev->queue_map_max)
2282 t = pkt_dev->queue_map_min;
2283 }
2284 pkt_dev->cur_queue_map = t;
2285 }
bfdbc0ac 2286 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2287}
2288
1da177e4
LT		 2289/* Increment/randomize headers according to flags and current values
2290 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2291 */
222f1806
LC		 2292static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2293{
2294 __u32 imn;
2295 __u32 imx;
2296 int flow = 0;
1da177e4 2297
007a531b
JHS		 2298 if (pkt_dev->cflows)
2299 flow = f_pick(pkt_dev);
1da177e4
LT		 2300
2301 /* Deal with source MAC */
222f1806
LC		 2302 if (pkt_dev->src_mac_count > 1) {
2303 __u32 mc;
2304 __u32 tmp;
2305
2306 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2307 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2308 else {
2309 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2310 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2311 pkt_dev->src_mac_count)
2312 pkt_dev->cur_src_mac_offset = 0;
2313 }
2314
2315 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2316 pkt_dev->hh[11] = tmp;
2317 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2318 pkt_dev->hh[10] = tmp;
2319 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2320 pkt_dev->hh[9] = tmp;
2321 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2322 pkt_dev->hh[8] = tmp;
2323 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2324 pkt_dev->hh[7] = tmp;
2325 }
2326
2327 /* Deal with Destination MAC */
2328 if (pkt_dev->dst_mac_count > 1) {
2329 __u32 mc;
2330 __u32 tmp;
2331
2332 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2333 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2334
2335 else {
2336 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2337 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2338 pkt_dev->dst_mac_count) {
2339 pkt_dev->cur_dst_mac_offset = 0;
2340 }
2341 }
2342
2343 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2344 pkt_dev->hh[5] = tmp;
2345 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2346 pkt_dev->hh[4] = tmp;
2347 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2348 pkt_dev->hh[3] = tmp;
2349 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2350 pkt_dev->hh[2] = tmp;
2351 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2352 pkt_dev->hh[1] = tmp;
2353 }
2354
ca6549af 2355 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2356 unsigned int i;
e71a4783 2357 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2358 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2359 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2360 ((__force __be32)prandom_u32() &
ca6549af
SW		 2361 htonl(0x000fffff));
2362 }
2363
34954ddc 2364 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2365 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2366 }
2367
2368 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2369 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2370 }
2371
222f1806
LC		 2372 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2373 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2374 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2375 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2376 + pkt_dev->udp_src_min;
222f1806
LC		 2377
2378 else {
1da177e4
LT		 2379 pkt_dev->cur_udp_src++;
2380 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2381 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2382 }
2383 }
2384
2385 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2386 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2387 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2388 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2389 + pkt_dev->udp_dst_min;
222f1806 2390 } else {
1da177e4 2391 pkt_dev->cur_udp_dst++;
222f1806 2392 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2393 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2394 }
2395 }
1da177e4
LT		 2396
2397 if (!(pkt_dev->flags & F_IPV6)) {
2398
63adc6fb
SH		 2399 imn = ntohl(pkt_dev->saddr_min);
2400 imx = ntohl(pkt_dev->saddr_max);
2401 if (imn < imx) {
1da177e4 2402 __u32 t;
222f1806 2403 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2404 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2405 else {
2406 t = ntohl(pkt_dev->cur_saddr);
2407 t++;
63adc6fb 2408 if (t > imx)
1da177e4 2409 t = imn;
63adc6fb 2410
1da177e4
LT		 2411 }
2412 pkt_dev->cur_saddr = htonl(t);
2413 }
222f1806 2414
007a531b 2415 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2416 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2417 } else {
252e3346
AV		 2418 imn = ntohl(pkt_dev->daddr_min);
2419 imx = ntohl(pkt_dev->daddr_max);
2420 if (imn < imx) {
1da177e4 2421 __u32 t;
252e3346 2422 __be32 s;
1da177e4
LT		 2423 if (pkt_dev->flags & F_IPDST_RND) {
2424
70e3ba72 2425 do {
33d7c5e5
AM		 2426 t = prandom_u32() %
2427 (imx - imn) + imn;
252e3346 2428 s = htonl(t);
70e3ba72
AM		 2429 } while (ipv4_is_loopback(s) ||
2430 ipv4_is_multicast(s) ||
2431 ipv4_is_lbcast(s) ||
2432 ipv4_is_zeronet(s) ||
2433 ipv4_is_local_multicast(s));
252e3346
AV		 2434 pkt_dev->cur_daddr = s;
2435 } else {
1da177e4
LT		 2436 t = ntohl(pkt_dev->cur_daddr);
2437 t++;
2438 if (t > imx) {
2439 t = imn;
2440 }
2441 pkt_dev->cur_daddr = htonl(t);
2442 }
2443 }
222f1806 2444 if (pkt_dev->cflows) {
007a531b 2445 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2446 pkt_dev->flows[flow].cur_daddr =
2447 pkt_dev->cur_daddr;
a553e4a6
JHS		 2448#ifdef CONFIG_XFRM
2449 if (pkt_dev->flags & F_IPSEC_ON)
2450 get_ipsec_sa(pkt_dev, flow);
2451#endif
1da177e4
LT		 2452 pkt_dev->nflows++;
2453 }
2454 }
222f1806
LC		 2455 } else { /* IPV6 * */
2456
06e30411 2457 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2458 int i;
2459
2460 /* Only random destinations yet */
2461
222f1806 2462 for (i = 0; i < 4; i++) {
1da177e4 2463 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2464 (((__force __be32)prandom_u32() |
222f1806
LC		 2465 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2466 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2467 }
222f1806 2468 }
1da177e4
LT		 2469 }
2470
222f1806
LC		 2471 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2472 __u32 t;
2473 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2474 t = prandom_u32() %
5fa6fc76
SH		 2475 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2476 + pkt_dev->min_pkt_size;
222f1806 2477 } else {
1da177e4 2478 t = pkt_dev->cur_pkt_size + 1;
222f1806 2479 if (t > pkt_dev->max_pkt_size)
1da177e4 2480 t = pkt_dev->min_pkt_size;
222f1806
LC		 2481 }
2482 pkt_dev->cur_pkt_size = t;
2483 }
1da177e4 2484
fd2ea0a7 2485 set_cur_queue_map(pkt_dev);
45b270f8 2486
1da177e4
LT		 2487 pkt_dev->flows[flow].count++;
2488}
2489
a553e4a6
JHS		 2490
2491#ifdef CONFIG_XFRM
cf93d47e
FD		 2492u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
2493
2494 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2495};
2496
a553e4a6
JHS		 2497static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2498{
2499 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2500 int err = 0;
6de9ace4 2501 struct net *net = dev_net(pkt_dev->odev);
a553e4a6
JHS		 2502
2503 if (!x)
2504 return 0;
2505 /* XXX: we dont support tunnel mode for now until
2506 * we resolve the dst issue */
cf93d47e 2507 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
a553e4a6
JHS		 2508 return 0;
2509
cf93d47e
FD		 2510 /* But when user specify an valid SPI, transformation
2511 * supports both transport/tunnel mode + ESP/AH type.
2512 */
2513 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2514 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2515
2516 rcu_read_lock_bh();
13996378 2517 err = x->outer_mode->output(x, skb);
cf93d47e 2518 rcu_read_unlock_bh();
6de9ace4
FD		 2519 if (err) {
2520 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
a553e4a6 2521 goto error;
6de9ace4 2522 }
a553e4a6 2523 err = x->type->output(x, skb);
6de9ace4
FD		 2524 if (err) {
2525 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
a553e4a6 2526 goto error;
6de9ace4 2527 }
0af0a413 2528 spin_lock_bh(&x->lock);
63adc6fb 2529 x->curlft.bytes += skb->len;
a553e4a6 2530 x->curlft.packets++;
0af0a413 2531 spin_unlock_bh(&x->lock);
a553e4a6 2532error:
a553e4a6
JHS		 2533 return err;
2534}
2535
475ac1e4 2536static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2537{
2538 if (pkt_dev->cflows) {
2539 /* let go of the SAs if we have them */
d6182223
PG		 2540 int i;
2541 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2542 struct xfrm_state *x = pkt_dev->flows[i].x;
2543 if (x) {
2544 xfrm_state_put(x);
2545 pkt_dev->flows[i].x = NULL;
2546 }
2547 }
2548 }
2549}
2550
475ac1e4 2551static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2552 struct sk_buff *skb, __be16 protocol)
2553{
2554 if (pkt_dev->flags & F_IPSEC_ON) {
2555 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2556 int nhead = 0;
2557 if (x) {
2558 int ret;
2559 __u8 *eth;
3868204d 2560 struct iphdr *iph;
2561
a553e4a6 2562 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2563 if (nhead > 0) {
a553e4a6
JHS		 2564 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2565 if (ret < 0) {
f9467eae
JP		 2566 pr_err("Error expanding ipsec packet %d\n",
2567 ret);
b4bb4ac8 2568 goto err;
a553e4a6
JHS		 2569 }
2570 }
2571
2572 /* ipsec is not expecting ll header */
2573 skb_pull(skb, ETH_HLEN);
2574 ret = pktgen_output_ipsec(skb, pkt_dev);
2575 if (ret) {
f9467eae 2576 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2577 goto err;
a553e4a6
JHS		 2578 }
2579 /* restore ll */
2580 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2581 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2582 *(u16 *) &eth[12] = protocol;
3868204d 2583
2584 /* Update IPv4 header len as well as checksum value */
2585 iph = ip_hdr(skb);
2586 iph->tot_len = htons(skb->len - ETH_HLEN);
2587 ip_send_check(iph);
a553e4a6
JHS		 2588 }
2589 }
2590 return 1;
b4bb4ac8
IJ		 2591err:
2592 kfree_skb(skb);
2593 return 0;
a553e4a6
JHS		 2594}
2595#endif
2596
ca6549af
SW		 2597static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2598{
95c96174 2599 unsigned int i;
63adc6fb 2600 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2601 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2602
ca6549af
SW		 2603 mpls--;
2604 *mpls |= MPLS_STACK_BOTTOM;
2605}
2606
0f37c605
AV		 2607static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2608 unsigned int prio)
2609{
2610 return htons(id | (cfi << 12) | (prio << 13));
2611}
2612
26ad7879
ED		 2613static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2614 int datalen)
2615{
2616 struct timeval timestamp;
2617 struct pktgen_hdr *pgh;
2618
2619 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2620 datalen -= sizeof(*pgh);
2621
2622 if (pkt_dev->nfrags <= 0) {
05aebe2e 2623 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2624 } else {
2625 int frags = pkt_dev->nfrags;
2626 int i, len;
7d36a991 2627 int frag_len;
26ad7879
ED		 2628
2629
2630 if (frags > MAX_SKB_FRAGS)
2631 frags = MAX_SKB_FRAGS;
2632 len = datalen - frags * PAGE_SIZE;
2633 if (len > 0) {
2634 memset(skb_put(skb, len), 0, len);
2635 datalen = frags * PAGE_SIZE;
2636 }
2637
2638 i = 0;
7d36a991 2639 frag_len = (datalen/frags) < PAGE_SIZE ?
2640 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2641 while (datalen > 0) {
2642 if (unlikely(!pkt_dev->page)) {
2643 int node = numa_node_id();
2644
2645 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2646 node = pkt_dev->node;
2647 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2648 if (!pkt_dev->page)
2649 break;
2650 }
a0bec1cd 2651 get_page(pkt_dev->page);
ea2ab693 2652 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2653 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2654 /*last fragment, fill rest of data*/
2655 if (i == (frags - 1))
9e903e08
ED		 2656 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2657 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2658 else
9e903e08
ED		 2659 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2660 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2661 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2662 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2663 i++;
2664 skb_shinfo(skb)->nr_frags = i;
2665 }
26ad7879
ED		 2666 }
2667
2668 /* Stamp the time, and sequence number,
2669 * convert them to network byte order
2670 */
2671 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2672 pgh->seq_num = htonl(pkt_dev->seq_num);
2673
2674 do_gettimeofday(&timestamp);
2675 pgh->tv_sec = htonl(timestamp.tv_sec);
2676 pgh->tv_usec = htonl(timestamp.tv_usec);
2677}
2678
7a6e288d
DB		 2679static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2680 struct pktgen_dev *pkt_dev,
2681 unsigned int extralen)
2682{
2683 struct sk_buff *skb = NULL;
2684 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2685 pkt_dev->pkt_overhead;
2686
2687 if (pkt_dev->flags & F_NODE) {
2688 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2689
2690 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2691 if (likely(skb)) {
2692 skb_reserve(skb, NET_SKB_PAD);
2693 skb->dev = dev;
2694 }
2695 } else {
2696 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2697 }
2698
2699 return skb;
2700}
2701
222f1806
LC		 2702static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2703 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2704{
2705 struct sk_buff *skb = NULL;
2706 __u8 *eth;
2707 struct udphdr *udph;
2708 int datalen, iplen;
2709 struct iphdr *iph;
d5f1ce9a 2710 __be16 protocol = htons(ETH_P_IP);
ca6549af 2711 __be32 *mpls;
34954ddc
FF		 2712 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2713 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2714 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2715 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2716 u16 queue_map;
ca6549af
SW		 2717
2718 if (pkt_dev->nr_labels)
d5f1ce9a 2719 protocol = htons(ETH_P_MPLS_UC);
222f1806 2720
34954ddc 2721 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2722 protocol = htons(ETH_P_8021Q);
34954ddc 2723
64053bee
RO		 2724 /* Update any of the values, used when we're incrementing various
2725 * fields.
2726 */
2727 mod_cur_headers(pkt_dev);
eb589063 2728 queue_map = pkt_dev->cur_queue_map;
64053bee 2729
7ac5459e 2730 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2731
7a6e288d 2732 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT		 2733 if (!skb) {
2734 sprintf(pkt_dev->result, "No memory");
2735 return NULL;
2736 }
2737
7a6e288d 2738 prefetchw(skb->data);
7ac5459e 2739 skb_reserve(skb, datalen);
1da177e4
LT		 2740
2741 /* Reserve for ethernet and IP header */
2742 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2743 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2744 if (pkt_dev->nr_labels)
2745 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2746
2747 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2748 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2749 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2750 *svlan_tci = build_tci(pkt_dev->svlan_id,
2751 pkt_dev->svlan_cfi,
2752 pkt_dev->svlan_p);
34954ddc 2753 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2754 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2755 }
2756 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2757 *vlan_tci = build_tci(pkt_dev->vlan_id,
2758 pkt_dev->vlan_cfi,
2759 pkt_dev->vlan_p);
34954ddc 2760 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2761 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2762 }
2763
525cebed
TG		 2764 skb_set_mac_header(skb, 0);
2765 skb_set_network_header(skb, skb->len);
2766 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2767
2768 skb_set_transport_header(skb, skb->len);
2769 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2770 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2771 skb->priority = pkt_dev->skb_priority;
2772
1da177e4 2773 memcpy(eth, pkt_dev->hh, 12);
252e3346 2774 *(__be16 *) & eth[12] = protocol;
1da177e4 2775
ca6549af
SW		 2776 /* Eth + IPh + UDPh + mpls */
2777 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2778 pkt_dev->pkt_overhead;
6af773e7 2779 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2780 datalen = sizeof(struct pktgen_hdr);
222f1806 2781
1da177e4
LT		 2782 udph->source = htons(pkt_dev->cur_udp_src);
2783 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2784 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2785 udph->check = 0;
1da177e4
LT		 2786
2787 iph->ihl = 5;
2788 iph->version = 4;
2789 iph->ttl = 32;
1ca7768c 2790 iph->tos = pkt_dev->tos;
222f1806 2791 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2792 iph->saddr = pkt_dev->cur_saddr;
2793 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2794 iph->id = htons(pkt_dev->ip_id);
2795 pkt_dev->ip_id++;
1da177e4
LT		 2796 iph->frag_off = 0;
2797 iplen = 20 + 8 + datalen;
2798 iph->tot_len = htons(iplen);
03c633e7 2799 ip_send_check(iph);
ca6549af 2800 skb->protocol = protocol;
1da177e4
LT		 2801 skb->dev = odev;
2802 skb->pkt_type = PACKET_HOST;
c26bf4a5
TG		 2803
2804 if (!(pkt_dev->flags & F_UDPCSUM)) {
2805 skb->ip_summed = CHECKSUM_NONE;
2806 } else if (odev->features & NETIF_F_V4_CSUM) {
2807 skb->ip_summed = CHECKSUM_PARTIAL;
2808 skb->csum = 0;
2809 udp4_hwcsum(skb, udph->source, udph->dest);
2810 } else {
2811 __wsum csum = udp_csum(skb);
2812
2813 /* add protocol-dependent pseudo-header */
2814 udph->check = csum_tcpudp_magic(udph->source, udph->dest,
2815 datalen + 8, IPPROTO_UDP, csum);
2816
2817 if (udph->check == 0)
2818 udph->check = CSUM_MANGLED_0;
2819 }
2820
26ad7879 2821 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2822
a553e4a6
JHS		 2823#ifdef CONFIG_XFRM
2824 if (!process_ipsec(pkt_dev, skb, protocol))
2825 return NULL;
2826#endif
2827
1da177e4
LT		 2828 return skb;
2829}
2830
222f1806
LC		 2831static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2832 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2833{
2834 struct sk_buff *skb = NULL;
2835 __u8 *eth;
2836 struct udphdr *udph;
c26bf4a5 2837 int datalen, udplen;
1da177e4 2838 struct ipv6hdr *iph;
d5f1ce9a 2839 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2840 __be32 *mpls;
34954ddc
FF		 2841 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2842 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2843 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2844 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2845 u16 queue_map;
ca6549af
SW		 2846
2847 if (pkt_dev->nr_labels)
d5f1ce9a 2848 protocol = htons(ETH_P_MPLS_UC);
64053bee 2849
34954ddc 2850 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2851 protocol = htons(ETH_P_8021Q);
34954ddc 2852
64053bee
RO		 2853 /* Update any of the values, used when we're incrementing various
2854 * fields.
2855 */
2856 mod_cur_headers(pkt_dev);
eb589063 2857 queue_map = pkt_dev->cur_queue_map;
64053bee 2858
7a6e288d 2859 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT		 2860 if (!skb) {
2861 sprintf(pkt_dev->result, "No memory");
2862 return NULL;
2863 }
2864
7a6e288d 2865 prefetchw(skb->data);
1da177e4
LT		 2866 skb_reserve(skb, 16);
2867
2868 /* Reserve for ethernet and IP header */
2869 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2870 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2871 if (pkt_dev->nr_labels)
2872 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2873
2874 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2875 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2876 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2877 *svlan_tci = build_tci(pkt_dev->svlan_id,
2878 pkt_dev->svlan_cfi,
2879 pkt_dev->svlan_p);
34954ddc 2880 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2881 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2882 }
2883 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2884 *vlan_tci = build_tci(pkt_dev->vlan_id,
2885 pkt_dev->vlan_cfi,
2886 pkt_dev->vlan_p);
34954ddc 2887 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2888 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2889 }
2890
525cebed
TG		 2891 skb_set_mac_header(skb, 0);
2892 skb_set_network_header(skb, skb->len);
2893 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2894
2895 skb_set_transport_header(skb, skb->len);
2896 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2897 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2898 skb->priority = pkt_dev->skb_priority;
1da177e4 2899
1da177e4 2900 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2901 *(__be16 *) &eth[12] = protocol;
64053bee 2902
ca6549af
SW		 2903 /* Eth + IPh + UDPh + mpls */
2904 datalen = pkt_dev->cur_pkt_size - 14 -
2905 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2906 pkt_dev->pkt_overhead;
1da177e4 2907
5aa8b572 2908 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2909 datalen = sizeof(struct pktgen_hdr);
e87cc472 2910 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2911 }
2912
c26bf4a5 2913 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT		 2914 udph->source = htons(pkt_dev->cur_udp_src);
2915 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG		 2916 udph->len = htons(udplen);
2917 udph->check = 0;
1da177e4 2918
d5f1ce9a 2919 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2920
1ca7768c
FF		 2921 if (pkt_dev->traffic_class) {
2922 /* Version + traffic class + flow (0) */
252e3346 2923 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2924 }
2925
1da177e4
LT		 2926 iph->hop_limit = 32;
2927
c26bf4a5 2928 iph->payload_len = htons(udplen);
1da177e4
LT		 2929 iph->nexthdr = IPPROTO_UDP;
2930
4e3fd7a0
AD		 2931 iph->daddr = pkt_dev->cur_in6_daddr;
2932 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2933
ca6549af 2934 skb->protocol = protocol;
1da177e4
LT		 2935 skb->dev = odev;
2936 skb->pkt_type = PACKET_HOST;
2937
c26bf4a5
TG		 2938 if (!(pkt_dev->flags & F_UDPCSUM)) {
2939 skb->ip_summed = CHECKSUM_NONE;
2940 } else if (odev->features & NETIF_F_V6_CSUM) {
2941 skb->ip_summed = CHECKSUM_PARTIAL;
2942 skb->csum_start = skb_transport_header(skb) - skb->head;
2943 skb->csum_offset = offsetof(struct udphdr, check);
2944 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2945 } else {
2946 __wsum csum = udp_csum(skb);
2947
2948 /* add protocol-dependent pseudo-header */
2949 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2950
2951 if (udph->check == 0)
2952 udph->check = CSUM_MANGLED_0;
2953 }
2954
26ad7879 2955 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2956
1da177e4
LT		 2957 return skb;
2958}
2959
475ac1e4
SH		 2960static struct sk_buff *fill_packet(struct net_device *odev,
2961 struct pktgen_dev *pkt_dev)
1da177e4 2962{
222f1806 2963 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2964 return fill_packet_ipv6(odev, pkt_dev);
2965 else
2966 return fill_packet_ipv4(odev, pkt_dev);
2967}
2968
222f1806 2969static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2970{
222f1806
LC		 2971 pkt_dev->seq_num = 1;
2972 pkt_dev->idle_acc = 0;
1da177e4 2973 pkt_dev->sofar = 0;
222f1806
LC		 2974 pkt_dev->tx_bytes = 0;
2975 pkt_dev->errors = 0;
1da177e4
LT		 2976}
2977
2978/* Set up structure for sending pkts, clear counters */
2979
2980static void pktgen_run(struct pktgen_thread *t)
2981{
c26a8016 2982 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2983 int started = 0;
2984
f9467eae 2985 func_enter();
1da177e4
LT		 2986
2987 if_lock(t);
c26a8016 2988 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 2989
2990 /*
2991 * setup odev and create initial packet.
2992 */
2993 pktgen_setup_inject(pkt_dev);
2994
222f1806 2995 if (pkt_dev->odev) {
1da177e4 2996 pktgen_clear_counters(pkt_dev);
222f1806 2997 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 2998 pkt_dev->skb = NULL;
398f382c 2999 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 3000
16dab72f 3001 set_pkt_overhead(pkt_dev);
222f1806 3002
1da177e4
LT		 3003 strcpy(pkt_dev->result, "Starting");
3004 started++;
222f1806 3005 } else
1da177e4
LT		 3006 strcpy(pkt_dev->result, "Error starting");
3007 }
3008 if_unlock(t);
222f1806
LC		 3009 if (started)
3010 t->control &= ~(T_STOP);
1da177e4
LT		 3011}
3012
4e58a027 3013static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 3014{
cdcdbe0b 3015 struct pktgen_thread *t;
1da177e4 3016
f9467eae 3017 func_enter();
1da177e4 3018
6146e6a4 3019 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3020
4e58a027 3021 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 3022 t->control |= T_STOP;
cdcdbe0b 3023
6146e6a4 3024 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3025}
3026
648fda74 3027static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3028{
648fda74 3029 const struct pktgen_dev *pkt_dev;
1da177e4 3030
c26a8016 3031 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3032 if (pkt_dev->running)
3033 return 1;
3034 return 0;
1da177e4
LT		 3035}
3036
222f1806 3037static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3038{
222f1806 3039 if_lock(t);
1da177e4 3040
222f1806 3041 while (thread_is_running(t)) {
1da177e4 3042
222f1806 3043 if_unlock(t);
1da177e4 3044
222f1806 3045 msleep_interruptible(100);
1da177e4 3046
222f1806
LC		 3047 if (signal_pending(current))
3048 goto signal;
3049 if_lock(t);
3050 }
3051 if_unlock(t);
3052 return 1;
3053signal:
3054 return 0;
1da177e4
LT		 3055}
3056
4e58a027 3057static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3058{
cdcdbe0b 3059 struct pktgen_thread *t;
1da177e4 3060 int sig = 1;
222f1806 3061
6146e6a4 3062 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3063
4e58a027 3064 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3065 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3066 if (sig == 0)
3067 break;
1da177e4 3068 }
cdcdbe0b
LC		 3069
3070 if (sig == 0)
4e58a027 3071 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3072 t->control |= (T_STOP);
cdcdbe0b 3073
6146e6a4 3074 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3075 return sig;
3076}
3077
4e58a027 3078static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3079{
cdcdbe0b 3080 struct pktgen_thread *t;
1da177e4 3081
f9467eae 3082 func_enter();
1da177e4 3083
6146e6a4 3084 mutex_lock(&pktgen_thread_lock);
1da177e4 3085
4e58a027 3086 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3087 t->control |= (T_RUN);
cdcdbe0b 3088
6146e6a4 3089 mutex_unlock(&pktgen_thread_lock);
1da177e4 3090
63adc6fb
SH		 3091 /* Propagate thread->control */
3092 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3093
4e58a027 3094 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3095}
3096
4e58a027 3097static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3098{
3099 struct pktgen_thread *t;
3100
f9467eae 3101 func_enter();
eb37b41c
JB		 3102
3103 mutex_lock(&pktgen_thread_lock);
3104
4e58a027 3105 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3106 t->control |= (T_REMDEVALL);
3107
3108 mutex_unlock(&pktgen_thread_lock);
3109
63adc6fb
SH		 3110 /* Propagate thread->control */
3111 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3112
4e58a027 3113 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3114}
3115
1da177e4
LT		 3116static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3117{
fd29cf72 3118 __u64 bps, mbps, pps;
222f1806 3119 char *p = pkt_dev->result;
fd29cf72
SH		 3120 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3121 pkt_dev->started_at);
3122 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3123
03a14ab1 3124 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3125 (unsigned long long)ktime_to_us(elapsed),
3126 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3127 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3128 (unsigned long long)pkt_dev->sofar,
3129 pkt_dev->cur_pkt_size, nr_frags);
3130
fd29cf72
SH		 3131 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3132 ktime_to_ns(elapsed));
222f1806
LC		 3133
3134 bps = pps * 8 * pkt_dev->cur_pkt_size;
3135
3136 mbps = bps;
3137 do_div(mbps, 1000000);
3138 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3139 (unsigned long long)pps,
3140 (unsigned long long)mbps,
3141 (unsigned long long)bps,
3142 (unsigned long long)pkt_dev->errors);
1da177e4 3143}
1da177e4
LT		 3144
3145/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3146static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3147{
222f1806 3148 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3149
222f1806 3150 if (!pkt_dev->running) {
f9467eae
JP		 3151 pr_warning("interface: %s is already stopped\n",
3152 pkt_dev->odevname);
222f1806
LC		 3153 return -EINVAL;
3154 }
1da177e4 3155
3bda06a3
SH		 3156 kfree_skb(pkt_dev->skb);
3157 pkt_dev->skb = NULL;
398f382c 3158 pkt_dev->stopped_at = ktime_get();
222f1806 3159 pkt_dev->running = 0;
1da177e4 3160
95ed63f7 3161 show_results(pkt_dev, nr_frags);
1da177e4 3162
222f1806 3163 return 0;
1da177e4
LT		 3164}
3165
222f1806 3166static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3167{
c26a8016 3168 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3169
1da177e4
LT		 3170 if_lock(t);
3171
c26a8016
LC		 3172 list_for_each_entry(pkt_dev, &t->if_list, list) {
3173 if (!pkt_dev->running)
222f1806
LC		 3174 continue;
3175 if (best == NULL)
c26a8016 3176 best = pkt_dev;
398f382c 3177 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3178 best = pkt_dev;
1da177e4
LT		 3179 }
3180 if_unlock(t);
222f1806 3181 return best;
1da177e4
LT		 3182}
3183
222f1806
LC		 3184static void pktgen_stop(struct pktgen_thread *t)
3185{
c26a8016 3186 struct pktgen_dev *pkt_dev;
1da177e4 3187
f9467eae 3188 func_enter();
1da177e4 3189
222f1806 3190 if_lock(t);
1da177e4 3191
c26a8016
LC		 3192 list_for_each_entry(pkt_dev, &t->if_list, list) {
3193 pktgen_stop_device(pkt_dev);
95ed63f7 3194 }
1da177e4 3195
222f1806 3196 if_unlock(t);
1da177e4
LT		 3197}
3198
95ed63f7
AK		 3199/*
3200 * one of our devices needs to be removed - find it
3201 * and remove it
3202 */
3203static void pktgen_rem_one_if(struct pktgen_thread *t)
3204{
c26a8016
LC		 3205 struct list_head *q, *n;
3206 struct pktgen_dev *cur;
95ed63f7 3207
f9467eae 3208 func_enter();
95ed63f7
AK		 3209
3210 if_lock(t);
3211
c26a8016
LC		 3212 list_for_each_safe(q, n, &t->if_list) {
3213 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3214
222f1806
LC		 3215 if (!cur->removal_mark)
3216 continue;
95ed63f7 3217
86dc1ad2 3218 kfree_skb(cur->skb);
95ed63f7
AK		 3219 cur->skb = NULL;
3220
3221 pktgen_remove_device(t, cur);
3222
3223 break;
3224 }
3225
3226 if_unlock(t);
3227}
3228
222f1806 3229static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3230{
c26a8016
LC		 3231 struct list_head *q, *n;
3232 struct pktgen_dev *cur;
222f1806 3233
f9467eae
JP		 3234 func_enter();
3235
222f1806 3236 /* Remove all devices, free mem */
95ed63f7 3237
222f1806 3238 if_lock(t);
1da177e4 3239
c26a8016
LC		 3240 list_for_each_safe(q, n, &t->if_list) {
3241 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3242
86dc1ad2 3243 kfree_skb(cur->skb);
95ed63f7
AK		 3244 cur->skb = NULL;
3245
1da177e4
LT		 3246 pktgen_remove_device(t, cur);
3247 }
3248
222f1806 3249 if_unlock(t);
1da177e4
LT		 3250}
3251
222f1806 3252static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3253{
222f1806 3254 /* Remove from the thread list */
4e58a027 3255 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3256}
3257
ef87979c 3258static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3259{
398f382c 3260 ktime_t idle_start = ktime_get();
ef87979c 3261 schedule();
398f382c 3262 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3263}
3791decb 3264
ef87979c
SH		 3265static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3266{
398f382c 3267 ktime_t idle_start = ktime_get();
3791decb 3268
ef87979c
SH		 3269 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3270 if (signal_pending(current))
3271 break;
3272
3273 if (need_resched())
3274 pktgen_resched(pkt_dev);
3275 else
3276 cpu_relax();
3277 }
398f382c 3278 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3279}
3280
475ac1e4 3281static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3282{
00829823 3283 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3284 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3285 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3286 struct netdev_queue *txq;
fd2ea0a7 3287 u16 queue_map;
1da177e4
LT		 3288 int ret;
3289
ef87979c
SH		 3290 /* If device is offline, then don't send */
3291 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3292 pktgen_stop_device(pkt_dev);
3293 return;
fd2ea0a7
DM		 3294 }
3295
ef87979c
SH		 3296 /* This is max DELAY, this has special meaning of
3297 * "never transmit"
3298 */
3299 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3300 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3301 return;
1da177e4 3302 }
222f1806 3303
ef87979c 3304 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3305 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3306 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3307 /* build a new pkt */
3308 kfree_skb(pkt_dev->skb);
3309
3310 pkt_dev->skb = fill_packet(odev, pkt_dev);
3311 if (pkt_dev->skb == NULL) {
f9467eae 3312 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3313 schedule();
3314 pkt_dev->clone_count--; /* back out increment, OOM */
3315 return;
1da177e4 3316 }
baac8564 3317 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3318 pkt_dev->allocated_skbs++;
3319 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3320 }
95ed63f7 3321
ef87979c
SH		 3322 if (pkt_dev->delay && pkt_dev->last_ok)
3323 spin(pkt_dev, pkt_dev->next_tx);
3324
fd2ea0a7
DM		 3325 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3326 txq = netdev_get_tx_queue(odev, queue_map);
3327
3328 __netif_tx_lock_bh(txq);
5b8db2f5 3329
73466498 3330 if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
ef87979c 3331 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3332 pkt_dev->last_ok = 0;
3333 goto unlock;
3334 }
3335 atomic_inc(&(pkt_dev->skb->users));
3336 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3337
3338 switch (ret) {
3339 case NETDEV_TX_OK:
3340 txq_trans_update(txq);
3341 pkt_dev->last_ok = 1;
3342 pkt_dev->sofar++;
3343 pkt_dev->seq_num++;
baac8564 3344 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3345 break;
f466dba1
JF		 3346 case NET_XMIT_DROP:
3347 case NET_XMIT_CN:
3348 case NET_XMIT_POLICED:
3349 /* skb has been consumed */
3350 pkt_dev->errors++;
3351 break;
ef87979c 3352 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3353 net_info_ratelimited("%s xmit error: %d\n",
3354 pkt_dev->odevname, ret);
ef87979c
SH		 3355 pkt_dev->errors++;
3356 /* fallthru */
3357 case NETDEV_TX_LOCKED:
3358 case NETDEV_TX_BUSY:
3359 /* Retry it next time */
3360 atomic_dec(&(pkt_dev->skb->users));
3361 pkt_dev->last_ok = 0;
222f1806 3362 }
0835acfe 3363unlock:
fd2ea0a7 3364 __netif_tx_unlock_bh(txq);
222f1806 3365
1da177e4
LT		 3366 /* If pkt_dev->count is zero, then run forever */
3367 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3368 pktgen_wait_for_skb(pkt_dev);
222f1806 3369
1da177e4
LT		 3370 /* Done with this */
3371 pktgen_stop_device(pkt_dev);
222f1806 3372 }
222f1806 3373}
1da177e4 3374
4ec93edb 3375/*
1da177e4
LT		 3376 * Main loop of the thread goes here
3377 */
3378
ee74baa7 3379static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3380{
3381 DEFINE_WAIT(wait);
ee74baa7 3382 struct pktgen_thread *t = arg;
222f1806 3383 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3384 int cpu = t->cpu;
1da177e4 3385
ee74baa7 3386 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3387
3388 init_waitqueue_head(&t->queue);
d3ede327 3389 complete(&t->start_done);
1da177e4 3390
f9467eae 3391 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3392
ee74baa7 3393 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3394
83144186
RW		 3395 set_freezable();
3396
ee74baa7
DM		 3397 while (!kthread_should_stop()) {
3398 pkt_dev = next_to_run(t);
1da177e4 3399
ef87979c 3400 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3401 if (t->net->pktgen_exiting)
551eaff1 3402 break;
ef87979c
SH		 3403 wait_event_interruptible_timeout(t->queue,
3404 t->control != 0,
3405 HZ/10);
1b3f720b 3406 try_to_freeze();
ef87979c 3407 continue;
ee74baa7 3408 }
1da177e4 3409
ee74baa7 3410 __set_current_state(TASK_RUNNING);
222f1806 3411
ef87979c 3412 if (likely(pkt_dev)) {
1da177e4
LT		 3413 pktgen_xmit(pkt_dev);
3414
ef87979c
SH		 3415 if (need_resched())
3416 pktgen_resched(pkt_dev);
3417 else
3418 cpu_relax();
3419 }
3420
222f1806 3421 if (t->control & T_STOP) {
1da177e4
LT		 3422 pktgen_stop(t);
3423 t->control &= ~(T_STOP);
3424 }
3425
222f1806 3426 if (t->control & T_RUN) {
1da177e4
LT		 3427 pktgen_run(t);
3428 t->control &= ~(T_RUN);
3429 }
3430
222f1806 3431 if (t->control & T_REMDEVALL) {
1da177e4 3432 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3433 t->control &= ~(T_REMDEVALL);
3434 }
3435
222f1806 3436 if (t->control & T_REMDEV) {
95ed63f7 3437 pktgen_rem_one_if(t);
1da177e4
LT		 3438 t->control &= ~(T_REMDEV);
3439 }
3440
09fe3ef4
AM		 3441 try_to_freeze();
3442
ee74baa7 3443 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3444 }
1da177e4 3445
f9467eae 3446 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3447 pktgen_stop(t);
1da177e4 3448
f9467eae 3449 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3450 pktgen_rem_all_ifs(t);
1da177e4 3451
f9467eae 3452 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3453 pktgen_rem_thread(t);
cdcdbe0b 3454
551eaff1
ED		 3455 /* Wait for kthread_stop */
3456 while (!kthread_should_stop()) {
3457 set_current_state(TASK_INTERRUPTIBLE);
3458 schedule();
3459 }
3460 __set_current_state(TASK_RUNNING);
3461
ee74baa7 3462 return 0;
1da177e4
LT		 3463}
3464
222f1806 3465static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3466 const char *ifname, bool exact)
1da177e4 3467{
c26a8016 3468 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3469 size_t len = strlen(ifname);
222f1806 3470
3e984840 3471 if_lock(t);
c26a8016 3472 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3473 if (strncmp(p->odevname, ifname, len) == 0) {
3474 if (p->odevname[len]) {
3475 if (exact || p->odevname[len] != '@')
3476 continue;
3477 }
c26a8016 3478 pkt_dev = p;
222f1806
LC		 3479 break;
3480 }
222f1806
LC		 3481
3482 if_unlock(t);
f9467eae 3483 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3484 return pkt_dev;
1da177e4
LT		 3485}
3486
4ec93edb
YH		 3487/*
3488 * Adds a dev at front of if_list.
1da177e4
LT		 3489 */
3490
222f1806
LC		 3491static int add_dev_to_thread(struct pktgen_thread *t,
3492 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3493{
3494 int rv = 0;
222f1806
LC		 3495
3496 if_lock(t);
3497
3498 if (pkt_dev->pg_thread) {
f9467eae 3499 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3500 rv = -EBUSY;
3501 goto out;
3502 }
c26a8016
LC		 3503
3504 list_add(&pkt_dev->list, &t->if_list);
222f1806 3505 pkt_dev->pg_thread = t;
1da177e4
LT		 3506 pkt_dev->running = 0;
3507
222f1806
LC		 3508out:
3509 if_unlock(t);
3510 return rv;
1da177e4
LT		 3511}
3512
3513/* Called under thread lock */
3514
222f1806 3515static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3516{
222f1806 3517 struct pktgen_dev *pkt_dev;
39df232f 3518 int err;
3291b9db 3519 int node = cpu_to_node(t->cpu);
222f1806 3520
1da177e4
LT		 3521 /* We don't allow a device to be on several threads */
3522
4e58a027 3523 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3524 if (pkt_dev) {
f9467eae 3525 pr_err("ERROR: interface already used\n");
222f1806
LC		 3526 return -EBUSY;
3527 }
d50a6b56 3528
3291b9db 3529 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3530 if (!pkt_dev)
3531 return -ENOMEM;
3532
593f63b0 3533 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3534 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3535 node);
d50a6b56
SH		 3536 if (pkt_dev->flows == NULL) {
3537 kfree(pkt_dev);
3538 return -ENOMEM;
3539 }
d50a6b56 3540
95ed63f7 3541 pkt_dev->removal_mark = 0;
d50a6b56 3542 pkt_dev->nfrags = 0;
fd29cf72 3543 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3544 pkt_dev->count = pg_count_d;
3545 pkt_dev->sofar = 0;
222f1806 3546 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3547 pkt_dev->udp_src_max = 9;
3548 pkt_dev->udp_dst_min = 9;
3549 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3550 pkt_dev->vlan_p = 0;
3551 pkt_dev->vlan_cfi = 0;
3552 pkt_dev->vlan_id = 0xffff;
3553 pkt_dev->svlan_p = 0;
3554 pkt_dev->svlan_cfi = 0;
3555 pkt_dev->svlan_id = 0xffff;
e99b99b4 3556 pkt_dev->node = -1;
34954ddc 3557
4e58a027 3558 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3559 if (err)
3560 goto out1;
d8873315
NH		 3561 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3562 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3563
4e58a027 3564 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3565 &pktgen_if_fops, pkt_dev);
39df232f 3566 if (!pkt_dev->entry) {
f9467eae 3567 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3568 PG_PROC_DIR, ifname);
39df232f
SH		 3569 err = -EINVAL;
3570 goto out2;
d50a6b56 3571 }
a553e4a6
JHS		 3572#ifdef CONFIG_XFRM
3573 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3574 pkt_dev->ipsproto = IPPROTO_ESP;
cf93d47e
FD		 3575
3576 /* xfrm tunnel mode needs additional dst to extract outter
3577 * ip header protocol/ttl/id field, here creat a phony one.
3578 * instead of looking for a valid rt, which definitely hurting
3579 * performance under such circumstance.
3580 */
3581 pkt_dev->dstops.family = AF_INET;
3582 pkt_dev->dst.dev = pkt_dev->odev;
3583 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3584 pkt_dev->dst.child = &pkt_dev->dst;
3585 pkt_dev->dst.ops = &pkt_dev->dstops;
a553e4a6 3586#endif
d50a6b56
SH		 3587
3588 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3589out2:
3590 dev_put(pkt_dev->odev);
3591out1:
a553e4a6
JHS		 3592#ifdef CONFIG_XFRM
3593 free_SAs(pkt_dev);
3594#endif
1d0ebfe7 3595 vfree(pkt_dev->flows);
39df232f
SH		 3596 kfree(pkt_dev);
3597 return err;
1da177e4
LT		 3598}
3599
4e58a027 3600static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3601{
cdcdbe0b 3602 struct pktgen_thread *t;
d50a6b56 3603 struct proc_dir_entry *pe;
ee74baa7 3604 struct task_struct *p;
222f1806 3605
3291b9db
ED		 3606 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3607 cpu_to_node(cpu));
222f1806 3608 if (!t) {
f9467eae 3609 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3610 return -ENOMEM;
3611 }
3612
222f1806 3613 spin_lock_init(&t->if_lock);
1da177e4 3614 t->cpu = cpu;
222f1806 3615
ee74baa7
DM		 3616 INIT_LIST_HEAD(&t->if_list);
3617
4e58a027 3618 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3619 init_completion(&t->start_done);
ee74baa7 3620
94dcf29a
ED		 3621 p = kthread_create_on_node(pktgen_thread_worker,
3622 t,
3623 cpu_to_node(cpu),
3624 "kpktgend_%d", cpu);
ee74baa7 3625 if (IS_ERR(p)) {
f9467eae 3626 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3627 list_del(&t->th_list);
3628 kfree(t);
3629 return PTR_ERR(p);
3630 }
3631 kthread_bind(p, cpu);
3632 t->tsk = p;
3633
4e58a027 3634 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3635 &pktgen_thread_fops, t);
222f1806 3636 if (!pe) {
f9467eae 3637 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3638 PG_PROC_DIR, t->tsk->comm);
3639 kthread_stop(p);
3640 list_del(&t->th_list);
222f1806
LC		 3641 kfree(t);
3642 return -EINVAL;
3643 }
d50a6b56 3644
4e58a027 3645 t->net = pn;
ee74baa7 3646 wake_up_process(p);
d3ede327 3647 wait_for_completion(&t->start_done);
1da177e4
LT		 3648
3649 return 0;
3650}
3651
4ec93edb
YH		 3652/*
3653 * Removes a device from the thread if_list.
1da177e4 3654 */
222f1806
LC		 3655static void _rem_dev_from_if_list(struct pktgen_thread *t,
3656 struct pktgen_dev *pkt_dev)
1da177e4 3657{
c26a8016
LC		 3658 struct list_head *q, *n;
3659 struct pktgen_dev *p;
1da177e4 3660
c26a8016
LC		 3661 list_for_each_safe(q, n, &t->if_list) {
3662 p = list_entry(q, struct pktgen_dev, list);
3663 if (p == pkt_dev)
3664 list_del(&p->list);
1da177e4
LT		 3665 }
3666}
3667
222f1806
LC		 3668static int pktgen_remove_device(struct pktgen_thread *t,
3669 struct pktgen_dev *pkt_dev)
1da177e4 3670{
f9467eae 3671 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3672
222f1806 3673 if (pkt_dev->running) {
f9467eae 3674 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3675 pktgen_stop_device(pkt_dev);
3676 }
3677
3678 /* Dis-associate from the interface */
1da177e4
LT		 3679
3680 if (pkt_dev->odev) {
3681 dev_put(pkt_dev->odev);
222f1806
LC		 3682 pkt_dev->odev = NULL;
3683 }
3684
1da177e4
LT		 3685 /* And update the thread if_list */
3686
3687 _rem_dev_from_if_list(t, pkt_dev);
3688
39df232f 3689 if (pkt_dev->entry)
a8ca16ea 3690 proc_remove(pkt_dev->entry);
1da177e4 3691
a553e4a6
JHS		 3692#ifdef CONFIG_XFRM
3693 free_SAs(pkt_dev);
3694#endif
1d0ebfe7 3695 vfree(pkt_dev->flows);
26ad7879
ED		 3696 if (pkt_dev->page)
3697 put_page(pkt_dev->page);
1da177e4 3698 kfree(pkt_dev);
222f1806 3699 return 0;
1da177e4
LT		 3700}
3701
4e58a027 3702static int __net_init pg_net_init(struct net *net)
1da177e4 3703{
4e58a027 3704 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3705 struct proc_dir_entry *pe;
4e58a027
CW		 3706 int cpu, ret = 0;
3707
3708 pn->net = net;
3709 INIT_LIST_HEAD(&pn->pktgen_threads);
3710 pn->pktgen_exiting = false;
3711 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3712 if (!pn->proc_dir) {
3713 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3714 return -ENODEV;
4e58a027
CW		 3715 }
3716 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3717 if (pe == NULL) {
4e58a027 3718 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3719 ret = -EINVAL;
4e58a027 3720 goto remove;
222f1806 3721 }
1da177e4 3722
670c02c2 3723 for_each_online_cpu(cpu) {
8024bb24 3724 int err;
1da177e4 3725
4e58a027 3726 err = pktgen_create_thread(cpu, pn);
8024bb24 3727 if (err)
4e58a027 3728 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3729 cpu, err);
222f1806 3730 }
8024bb24 3731
4e58a027
CW		 3732 if (list_empty(&pn->pktgen_threads)) {
3733 pr_err("Initialization failed for all threads\n");
ce14f894 3734 ret = -ENODEV;
4e58a027 3735 goto remove_entry;
8024bb24
LC		 3736 }
3737
222f1806 3738 return 0;
ce14f894 3739
4e58a027
CW		 3740remove_entry:
3741 remove_proc_entry(PGCTRL, pn->proc_dir);
3742remove:
ece31ffd 3743 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3744 return ret;
1da177e4
LT		 3745}
3746
4e58a027 3747static void __net_exit pg_net_exit(struct net *net)
1da177e4 3748{
4e58a027 3749 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3750 struct pktgen_thread *t;
3751 struct list_head *q, *n;
d4b11335 3752 LIST_HEAD(list);
1da177e4 3753
222f1806 3754 /* Stop all interfaces & threads */
4e58a027 3755 pn->pktgen_exiting = true;
1da177e4 3756
c57b5468 3757 mutex_lock(&pktgen_thread_lock);
4e58a027 3758 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3759 mutex_unlock(&pktgen_thread_lock);
3760
3761 list_for_each_safe(q, n, &list) {
cdcdbe0b 3762 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3763 list_del(&t->th_list);
ee74baa7
DM		 3764 kthread_stop(t->tsk);
3765 kfree(t);
222f1806 3766 }
1da177e4 3767
4e58a027 3768 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3769 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3770}
3771
3772static struct pernet_operations pg_net_ops = {
3773 .init = pg_net_init,
3774 .exit = pg_net_exit,
3775 .id = &pg_net_id,
3776 .size = sizeof(struct pktgen_net),
3777};
3778
3779static int __init pg_init(void)
3780{
3781 int ret = 0;
1da177e4 3782
4e58a027
CW		 3783 pr_info("%s", version);
3784 ret = register_pernet_subsys(&pg_net_ops);
3785 if (ret)
3786 return ret;
3787 ret = register_netdevice_notifier(&pktgen_notifier_block);
3788 if (ret)
3789 unregister_pernet_subsys(&pg_net_ops);
3790
3791 return ret;
3792}
3793
3794static void __exit pg_cleanup(void)
3795{
3796 unregister_netdevice_notifier(&pktgen_notifier_block);
3797 unregister_pernet_subsys(&pg_net_ops);
1da177e4
LT		 3798}
3799
1da177e4
LT		 3800module_init(pg_init);
3801module_exit(pg_cleanup);
3802
c3d2f52d 3803MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3804MODULE_DESCRIPTION("Packet Generator tool");
3805MODULE_LICENSE("GPL");
c3d2f52d 3806MODULE_VERSION(VERSION);
1da177e4 3807module_param(pg_count_d, int, 0);
c3d2f52d 3808MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3809module_param(pg_delay_d, int, 0);
c3d2f52d 3810MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3811module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3812MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3813module_param(debug, int, 0);
c3d2f52d 3814MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
Linux kernel - Deliverables
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