Merge branch 'netns-scalability'
[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
8788370a
JDB
72 * way.
73 * The if_list is RCU protected, and the if_lock remains to protect updating
74 * of if_list, from "add_device" as it invoked from userspace (via proc write).
1da177e4 75 *
4ec93edb
YH
76 * By design there should only be *one* "controlling" process. In practice
77 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 78 * to /proc gives result code thats should be read be the "writer".
b4099fab 79 * For practical use this should be no problem.
1da177e4 80 *
4ec93edb
YH
81 * Note when adding devices to a specific CPU there good idea to also assign
82 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT
83 * --ro
84 *
4ec93edb 85 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT
86 * memleak 030710- KJP
87 *
88 * First "ranges" functionality for ipv6 030726 --ro
89 *
90 * Included flow support. 030802 ANK.
91 *
92 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 93 *
1da177e4
LT
94 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
95 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
96 *
4ec93edb 97 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT
98 * <shemminger@osdl.org> 040923
99 *
ca9f1fd2 100 * Randy Dunlap fixed u64 printk compiler warning
1da177e4
LT
101 *
102 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
103 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
104 *
4ec93edb 105 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT
106 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
107 *
4ec93edb 108 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 109 * 050103
ca6549af
SW
110 *
111 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
112 *
34954ddc
FF
113 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
114 *
ce5d0b47
AR
115 * Fixed src_mac command to set source mac of packet to value specified in
116 * command by Adit Ranadive <adit.262@gmail.com>
117 *
1da177e4 118 */
f9467eae
JP
119
120#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
121
1da177e4
LT
122#include <linux/sys.h>
123#include <linux/types.h>
124#include <linux/module.h>
125#include <linux/moduleparam.h>
126#include <linux/kernel.h>
222fa076 127#include <linux/mutex.h>
1da177e4
LT
128#include <linux/sched.h>
129#include <linux/slab.h>
130#include <linux/vmalloc.h>
1da177e4
LT
131#include <linux/unistd.h>
132#include <linux/string.h>
133#include <linux/ptrace.h>
134#include <linux/errno.h>
135#include <linux/ioport.h>
136#include <linux/interrupt.h>
4fc268d2 137#include <linux/capability.h>
2bc481cf 138#include <linux/hrtimer.h>
09fe3ef4 139#include <linux/freezer.h>
1da177e4
LT
140#include <linux/delay.h>
141#include <linux/timer.h>
cdcdbe0b 142#include <linux/list.h>
1da177e4
LT
143#include <linux/init.h>
144#include <linux/skbuff.h>
145#include <linux/netdevice.h>
146#include <linux/inet.h>
147#include <linux/inetdevice.h>
148#include <linux/rtnetlink.h>
149#include <linux/if_arp.h>
34954ddc 150#include <linux/if_vlan.h>
1da177e4
LT
151#include <linux/in.h>
152#include <linux/ip.h>
153#include <linux/ipv6.h>
154#include <linux/udp.h>
155#include <linux/proc_fs.h>
d50a6b56 156#include <linux/seq_file.h>
1da177e4 157#include <linux/wait.h>
f404e9a6 158#include <linux/etherdevice.h>
ee74baa7 159#include <linux/kthread.h>
268bb0ce 160#include <linux/prefetch.h>
457c4cbc 161#include <net/net_namespace.h>
1da177e4
LT
162#include <net/checksum.h>
163#include <net/ipv6.h>
c26bf4a5 164#include <net/udp.h>
73d94e94 165#include <net/ip6_checksum.h>
1da177e4 166#include <net/addrconf.h>
a553e4a6
JHS
167#ifdef CONFIG_XFRM
168#include <net/xfrm.h>
169#endif
4e58a027 170#include <net/netns/generic.h>
1da177e4
LT
171#include <asm/byteorder.h>
172#include <linux/rcupdate.h>
1977f032 173#include <linux/bitops.h>
63adc6fb
SH
174#include <linux/io.h>
175#include <linux/timex.h>
176#include <linux/uaccess.h>
1da177e4 177#include <asm/dma.h>
222f1806 178#include <asm/div64.h> /* do_div */
1da177e4 179
43d28b65 180#define VERSION "2.74"
1da177e4 181#define IP_NAME_SZ 32
ca6549af 182#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 183#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 184
f9467eae
JP
185#define func_enter() pr_debug("entering %s\n", __func__);
186
1da177e4 187/* Device flag bits */
222f1806
LC
188#define F_IPSRC_RND (1<<0) /* IP-Src Random */
189#define F_IPDST_RND (1<<1) /* IP-Dst Random */
190#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
191#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
192#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
193#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
194#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
195#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 196#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF
197#define F_VID_RND (1<<9) /* Random VLAN ID */
198#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 199#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 200#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 201#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 202#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 203#define F_NODE (1<<15) /* Node memory alloc*/
c26bf4a5 204#define F_UDPCSUM (1<<16) /* Include UDP checksum */
afb84b62 205#define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */
1da177e4
LT
206
207/* Thread control flag bits */
6b80d6a6
SH
208#define T_STOP (1<<0) /* Stop run */
209#define T_RUN (1<<1) /* Start run */
210#define T_REMDEVALL (1<<2) /* Remove all devs */
211#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 212
8788370a 213/* If lock -- protects updating of if_list */
1da177e4
LT
214#define if_lock(t) spin_lock(&(t->if_lock));
215#define if_unlock(t) spin_unlock(&(t->if_lock));
216
217/* Used to help with determining the pkts on receive */
218#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH
219#define PG_PROC_DIR "pktgen"
220#define PGCTRL "pgctrl"
1da177e4
LT
221
222#define MAX_CFLOWS 65536
223
34954ddc
FF
224#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
225#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
226
222f1806 227struct flow_state {
252e3346 228 __be32 cur_daddr;
222f1806 229 int count;
a553e4a6
JHS
230#ifdef CONFIG_XFRM
231 struct xfrm_state *x;
232#endif
007a531b 233 __u32 flags;
1da177e4
LT
234};
235
007a531b
JHS
236/* flow flag bits */
237#define F_INIT (1<<0) /* flow has been initialized */
238
1da177e4 239struct pktgen_dev {
1da177e4
LT
240 /*
241 * Try to keep frequent/infrequent used vars. separated.
242 */
39df232f
SH
243 struct proc_dir_entry *entry; /* proc file */
244 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 245 struct list_head list; /* chaining in the thread's run-queue */
8788370a 246 struct rcu_head rcu; /* freed by RCU */
1da177e4 247
63adc6fb 248 int running; /* if false, the test will stop */
1da177e4 249
222f1806
LC
250 /* If min != max, then we will either do a linear iteration, or
251 * we will do a random selection from within the range.
252 */
253 __u32 flags;
95ed63f7
AK
254 int removal_mark; /* non-zero => the device is marked for
255 * removal by worker thread */
1da177e4 256
68bf9f0b
AW
257 int min_pkt_size;
258 int max_pkt_size;
16dab72f 259 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 260 int nfrags;
26ad7879 261 struct page *page;
fd29cf72
SH
262 u64 delay; /* nano-seconds */
263
222f1806
LC
264 __u64 count; /* Default No packets to send */
265 __u64 sofar; /* How many pkts we've sent so far */
266 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 267 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC
268
269 /* runtime counters relating to clone_skb */
222f1806
LC
270
271 __u64 allocated_skbs;
272 __u32 clone_count;
273 int last_ok; /* Was last skb sent?
63adc6fb
SH
274 * Or a failed transmit of some sort?
275 * This will keep sequence numbers in order
222f1806 276 */
fd29cf72
SH
277 ktime_t next_tx;
278 ktime_t started_at;
279 ktime_t stopped_at;
280 u64 idle_acc; /* nano-seconds */
281
222f1806
LC
282 __u32 seq_num;
283
63adc6fb
SH
284 int clone_skb; /*
285 * Use multiple SKBs during packet gen.
286 * If this number is greater than 1, then
287 * that many copies of the same packet will be
288 * sent before a new packet is allocated.
289 * If you want to send 1024 identical packets
290 * before creating a new packet,
291 * set clone_skb to 1024.
222f1806
LC
292 */
293
294 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
295 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
296 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
297 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
298
299 struct in6_addr in6_saddr;
300 struct in6_addr in6_daddr;
301 struct in6_addr cur_in6_daddr;
302 struct in6_addr cur_in6_saddr;
1da177e4 303 /* For ranges */
222f1806
LC
304 struct in6_addr min_in6_daddr;
305 struct in6_addr max_in6_daddr;
306 struct in6_addr min_in6_saddr;
307 struct in6_addr max_in6_saddr;
308
309 /* If we're doing ranges, random or incremental, then this
310 * defines the min/max for those ranges.
311 */
252e3346
AV
312 __be32 saddr_min; /* inclusive, source IP address */
313 __be32 saddr_max; /* exclusive, source IP address */
314 __be32 daddr_min; /* inclusive, dest IP address */
315 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC
316
317 __u16 udp_src_min; /* inclusive, source UDP port */
318 __u16 udp_src_max; /* exclusive, source UDP port */
319 __u16 udp_dst_min; /* inclusive, dest UDP port */
320 __u16 udp_dst_max; /* exclusive, dest UDP port */
321
1ca7768c 322 /* DSCP + ECN */
63adc6fb
SH
323 __u8 tos; /* six MSB of (former) IPv4 TOS
324 are for dscp codepoint */
325 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
326 (see RFC 3260, sec. 4) */
1ca7768c 327
ca6549af 328 /* MPLS */
95c96174 329 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW
330 __be32 labels[MAX_MPLS_LABELS];
331
34954ddc
FF
332 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
333 __u8 vlan_p;
334 __u8 vlan_cfi;
335 __u16 vlan_id; /* 0xffff means no vlan tag */
336
337 __u8 svlan_p;
338 __u8 svlan_cfi;
339 __u16 svlan_id; /* 0xffff means no svlan tag */
340
222f1806
LC
341 __u32 src_mac_count; /* How many MACs to iterate through */
342 __u32 dst_mac_count; /* How many MACs to iterate through */
343
344 unsigned char dst_mac[ETH_ALEN];
345 unsigned char src_mac[ETH_ALEN];
346
347 __u32 cur_dst_mac_offset;
348 __u32 cur_src_mac_offset;
252e3346
AV
349 __be32 cur_saddr;
350 __be32 cur_daddr;
66ed1e5e 351 __u16 ip_id;
222f1806
LC
352 __u16 cur_udp_dst;
353 __u16 cur_udp_src;
45b270f8 354 __u16 cur_queue_map;
222f1806 355 __u32 cur_pkt_size;
baac8564 356 __u32 last_pkt_size;
222f1806
LC
357
358 __u8 hh[14];
359 /* = {
360 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
361
362 We fill in SRC address later
363 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
364 0x08, 0x00
365 };
366 */
367 __u16 pad; /* pad out the hh struct to an even 16 bytes */
368
63adc6fb 369 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC
370 * are transmitting the same one multiple times
371 */
63adc6fb
SH
372 struct net_device *odev; /* The out-going device.
373 * Note that the device should have it's
374 * pg_info pointer pointing back to this
375 * device.
376 * Set when the user specifies the out-going
377 * device name (not when the inject is
378 * started as it used to do.)
379 */
593f63b0 380 char odevname[32];
1da177e4 381 struct flow_state *flows;
95c96174
ED
382 unsigned int cflows; /* Concurrent flows (config) */
383 unsigned int lflow; /* Flow length (config) */
384 unsigned int nflows; /* accumulated flows (stats) */
385 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO
386
387 u16 queue_map_min;
388 u16 queue_map_max;
9e50e3ac 389 __u32 skb_priority; /* skb priority field */
38b2cf29 390 unsigned int burst; /* number of duplicated packets to burst */
e99b99b4 391 int node; /* Memory node */
45b270f8 392
a553e4a6
JHS
393#ifdef CONFIG_XFRM
394 __u8 ipsmode; /* IPSEC mode (config) */
395 __u8 ipsproto; /* IPSEC type (config) */
de4aee7d 396 __u32 spi;
cf93d47e
FD
397 struct dst_entry dst;
398 struct dst_ops dstops;
a553e4a6 399#endif
39df232f 400 char result[512];
1da177e4
LT
401};
402
403struct pktgen_hdr {
252e3346
AV
404 __be32 pgh_magic;
405 __be32 seq_num;
406 __be32 tv_sec;
407 __be32 tv_usec;
1da177e4
LT
408};
409
4e58a027
CW
410
411static int pg_net_id __read_mostly;
412
413struct pktgen_net {
414 struct net *net;
415 struct proc_dir_entry *proc_dir;
416 struct list_head pktgen_threads;
417 bool pktgen_exiting;
418};
551eaff1 419
1da177e4 420struct pktgen_thread {
63adc6fb 421 spinlock_t if_lock; /* for list of devices */
c26a8016 422 struct list_head if_list; /* All device here */
cdcdbe0b 423 struct list_head th_list;
ee74baa7 424 struct task_struct *tsk;
222f1806 425 char result[512];
222f1806 426
63adc6fb
SH
427 /* Field for thread to receive "posted" events terminate,
428 stop ifs etc. */
222f1806
LC
429
430 u32 control;
1da177e4
LT
431 int cpu;
432
222f1806 433 wait_queue_head_t queue;
d3ede327 434 struct completion start_done;
4e58a027 435 struct pktgen_net *net;
1da177e4
LT
436};
437
438#define REMOVE 1
439#define FIND 0
440
c3d2f52d 441static const char version[] =
f9467eae
JP
442 "Packet Generator for packet performance testing. "
443 "Version: " VERSION "\n";
1da177e4 444
222f1806
LC
445static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
446static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
447static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 448 const char *ifname, bool exact);
1da177e4 449static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW
450static void pktgen_run_all_threads(struct pktgen_net *pn);
451static void pktgen_reset_all_threads(struct pktgen_net *pn);
452static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 453
222f1806 454static void pktgen_stop(struct pktgen_thread *t);
1da177e4 455static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 456
1da177e4 457/* Module parameters, defaults. */
65c5b786
SH
458static int pg_count_d __read_mostly = 1000;
459static int pg_delay_d __read_mostly;
460static int pg_clone_skb_d __read_mostly;
461static int debug __read_mostly;
1da177e4 462
222fa076 463static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 464
1da177e4
LT
465static struct notifier_block pktgen_notifier_block = {
466 .notifier_call = pktgen_device_event,
467};
468
1da177e4 469/*
4ec93edb 470 * /proc handling functions
1da177e4
LT
471 *
472 */
473
d50a6b56 474static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 475{
c3d2f52d 476 seq_puts(seq, version);
d50a6b56 477 return 0;
1da177e4
LT
478}
479
63adc6fb
SH
480static ssize_t pgctrl_write(struct file *file, const char __user *buf,
481 size_t count, loff_t *ppos)
1da177e4 482{
d50a6b56 483 char data[128];
4e58a027 484 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 485
09455747
MK
486 if (!capable(CAP_NET_ADMIN))
487 return -EPERM;
1da177e4 488
20b0c718
MK
489 if (count == 0)
490 return -EINVAL;
491
d50a6b56
SH
492 if (count > sizeof(data))
493 count = sizeof(data);
1da177e4 494
09455747
MK
495 if (copy_from_user(data, buf, count))
496 return -EFAULT;
497
20b0c718 498 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
1da177e4 499
222f1806 500 if (!strcmp(data, "stop"))
4e58a027 501 pktgen_stop_all_threads_ifs(pn);
1da177e4 502
222f1806 503 else if (!strcmp(data, "start"))
4e58a027 504 pktgen_run_all_threads(pn);
1da177e4 505
eb37b41c 506 else if (!strcmp(data, "reset"))
4e58a027 507 pktgen_reset_all_threads(pn);
eb37b41c 508
222f1806 509 else
294a0b7f 510 pr_warn("Unknown command: %s\n", data);
1da177e4 511
09455747 512 return count;
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 579
97dc48e2 580 seq_puts(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;
97dc48e2 595 seq_puts(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
38b2cf29
AS
617 if (pkt_dev->burst > 1)
618 seq_printf(seq, " burst: %d\n", pkt_dev->burst);
619
e99b99b4
RO
620 if (pkt_dev->node >= 0)
621 seq_printf(seq, " node: %d\n", pkt_dev->node);
622
97dc48e2 623 seq_puts(seq, " Flags: ");
ca6549af 624
222f1806 625 if (pkt_dev->flags & F_IPV6)
97dc48e2 626 seq_puts(seq, "IPV6 ");
1da177e4 627
222f1806 628 if (pkt_dev->flags & F_IPSRC_RND)
97dc48e2 629 seq_puts(seq, "IPSRC_RND ");
1da177e4 630
222f1806 631 if (pkt_dev->flags & F_IPDST_RND)
97dc48e2 632 seq_puts(seq, "IPDST_RND ");
1da177e4 633
222f1806 634 if (pkt_dev->flags & F_TXSIZE_RND)
97dc48e2 635 seq_puts(seq, "TXSIZE_RND ");
1da177e4 636
222f1806 637 if (pkt_dev->flags & F_UDPSRC_RND)
97dc48e2 638 seq_puts(seq, "UDPSRC_RND ");
1da177e4 639
222f1806 640 if (pkt_dev->flags & F_UDPDST_RND)
97dc48e2 641 seq_puts(seq, "UDPDST_RND ");
1da177e4 642
c26bf4a5 643 if (pkt_dev->flags & F_UDPCSUM)
97dc48e2 644 seq_puts(seq, "UDPCSUM ");
c26bf4a5 645
afb84b62
JDB
646 if (pkt_dev->flags & F_NO_TIMESTAMP)
647 seq_puts(seq, "NO_TIMESTAMP ");
648
ca6549af 649 if (pkt_dev->flags & F_MPLS_RND)
97dc48e2 650 seq_puts(seq, "MPLS_RND ");
ca6549af 651
45b270f8 652 if (pkt_dev->flags & F_QUEUE_MAP_RND)
97dc48e2 653 seq_puts(seq, "QUEUE_MAP_RND ");
45b270f8 654
e6fce5b9 655 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
97dc48e2 656 seq_puts(seq, "QUEUE_MAP_CPU ");
e6fce5b9 657
007a531b
JHS
658 if (pkt_dev->cflows) {
659 if (pkt_dev->flags & F_FLOW_SEQ)
97dc48e2 660 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
007a531b 661 else
97dc48e2 662 seq_puts(seq, "FLOW_RND ");
007a531b
JHS
663 }
664
a553e4a6 665#ifdef CONFIG_XFRM
8101328b 666 if (pkt_dev->flags & F_IPSEC_ON) {
97dc48e2 667 seq_puts(seq, "IPSEC ");
8101328b
FD
668 if (pkt_dev->spi)
669 seq_printf(seq, "spi:%u", pkt_dev->spi);
670 }
a553e4a6
JHS
671#endif
672
222f1806 673 if (pkt_dev->flags & F_MACSRC_RND)
97dc48e2 674 seq_puts(seq, "MACSRC_RND ");
1da177e4 675
222f1806 676 if (pkt_dev->flags & F_MACDST_RND)
97dc48e2 677 seq_puts(seq, "MACDST_RND ");
1da177e4 678
34954ddc 679 if (pkt_dev->flags & F_VID_RND)
97dc48e2 680 seq_puts(seq, "VID_RND ");
34954ddc
FF
681
682 if (pkt_dev->flags & F_SVID_RND)
97dc48e2 683 seq_puts(seq, "SVID_RND ");
34954ddc 684
e99b99b4 685 if (pkt_dev->flags & F_NODE)
97dc48e2 686 seq_puts(seq, "NODE_ALLOC ");
e99b99b4 687
222f1806
LC
688 seq_puts(seq, "\n");
689
fd29cf72 690 /* not really stopped, more like last-running-at */
398f382c 691 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH
692 idle = pkt_dev->idle_acc;
693 do_div(idle, NSEC_PER_USEC);
1da177e4 694
222f1806 695 seq_printf(seq,
fd29cf72 696 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 697 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH
698 (unsigned long long)pkt_dev->errors);
699
700 seq_printf(seq,
701 " started: %lluus stopped: %lluus idle: %lluus\n",
702 (unsigned long long) ktime_to_us(pkt_dev->started_at),
703 (unsigned long long) ktime_to_us(stopped),
704 (unsigned long long) idle);
1da177e4 705
222f1806
LC
706 seq_printf(seq,
707 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH
708 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
709 pkt_dev->cur_src_mac_offset);
1da177e4 710
222f1806 711 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD
712 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
713 &pkt_dev->cur_in6_saddr,
714 &pkt_dev->cur_in6_daddr);
222f1806 715 } else
0373a946
AW
716 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
717 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 718
222f1806 719 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 720 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 721
45b270f8
RO
722 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
723
222f1806 724 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT
725
726 if (pkt_dev->result[0])
222f1806 727 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 728 else
97dc48e2 729 seq_puts(seq, "Result: Idle\n");
1da177e4 730
d50a6b56 731 return 0;
1da177e4
LT
732}
733
ca6549af 734
63adc6fb
SH
735static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
736 __u32 *num)
ca6549af
SW
737{
738 int i = 0;
739 *num = 0;
740
e71a4783 741 for (; i < maxlen; i++) {
82fd5b5d 742 int value;
ca6549af
SW
743 char c;
744 *num <<= 4;
745 if (get_user(c, &user_buffer[i]))
746 return -EFAULT;
82fd5b5d
AS
747 value = hex_to_bin(c);
748 if (value >= 0)
749 *num |= value;
ca6549af
SW
750 else
751 break;
752 }
753 return i;
754}
755
222f1806
LC
756static int count_trail_chars(const char __user * user_buffer,
757 unsigned int maxlen)
1da177e4
LT
758{
759 int i;
760
761 for (i = 0; i < maxlen; i++) {
222f1806
LC
762 char c;
763 if (get_user(c, &user_buffer[i]))
764 return -EFAULT;
765 switch (c) {
1da177e4
LT
766 case '\"':
767 case '\n':
768 case '\r':
769 case '\t':
770 case ' ':
771 case '=':
772 break;
773 default:
774 goto done;
3ff50b79 775 }
1da177e4
LT
776 }
777done:
778 return i;
779}
780
bf0813bd
PG
781static long num_arg(const char __user *user_buffer, unsigned long maxlen,
782 unsigned long *num)
1da177e4 783{
d6182223 784 int i;
1da177e4 785 *num = 0;
222f1806 786
d6182223 787 for (i = 0; i < maxlen; i++) {
222f1806
LC
788 char c;
789 if (get_user(c, &user_buffer[i]))
790 return -EFAULT;
791 if ((c >= '0') && (c <= '9')) {
1da177e4 792 *num *= 10;
222f1806 793 *num += c - '0';
1da177e4
LT
794 } else
795 break;
796 }
797 return i;
798}
799
222f1806 800static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 801{
d6182223 802 int i;
1da177e4 803
d6182223 804 for (i = 0; i < maxlen; i++) {
222f1806
LC
805 char c;
806 if (get_user(c, &user_buffer[i]))
807 return -EFAULT;
808 switch (c) {
1da177e4
LT
809 case '\"':
810 case '\n':
811 case '\r':
812 case '\t':
813 case ' ':
814 goto done_str;
1da177e4
LT
815 default:
816 break;
3ff50b79 817 }
1da177e4
LT
818 }
819done_str:
1da177e4
LT
820 return i;
821}
822
ca6549af
SW
823static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
824{
95c96174 825 unsigned int n = 0;
ca6549af
SW
826 char c;
827 ssize_t i = 0;
828 int len;
829
830 pkt_dev->nr_labels = 0;
831 do {
832 __u32 tmp;
1ca7768c 833 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW
834 if (len <= 0)
835 return len;
836 pkt_dev->labels[n] = htonl(tmp);
837 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
838 pkt_dev->flags |= F_MPLS_RND;
839 i += len;
840 if (get_user(c, &buffer[i]))
841 return -EFAULT;
842 i++;
843 n++;
844 if (n >= MAX_MPLS_LABELS)
845 return -E2BIG;
e71a4783 846 } while (c == ',');
ca6549af
SW
847
848 pkt_dev->nr_labels = n;
849 return i;
850}
851
222f1806
LC
852static ssize_t pktgen_if_write(struct file *file,
853 const char __user * user_buffer, size_t count,
854 loff_t * offset)
1da177e4 855{
8a994a71 856 struct seq_file *seq = file->private_data;
222f1806 857 struct pktgen_dev *pkt_dev = seq->private;
d6182223 858 int i, max, len;
1da177e4
LT
859 char name[16], valstr[32];
860 unsigned long value = 0;
222f1806
LC
861 char *pg_result = NULL;
862 int tmp = 0;
1da177e4 863 char buf[128];
222f1806
LC
864
865 pg_result = &(pkt_dev->result[0]);
866
1da177e4 867 if (count < 1) {
294a0b7f 868 pr_warn("wrong command format\n");
1da177e4
LT
869 return -EINVAL;
870 }
222f1806 871
d6182223
PG
872 max = count;
873 tmp = count_trail_chars(user_buffer, max);
222f1806 874 if (tmp < 0) {
294a0b7f 875 pr_warn("illegal format\n");
222f1806 876 return tmp;
1da177e4 877 }
d6182223 878 i = tmp;
222f1806 879
1da177e4
LT
880 /* Read variable name */
881
882 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 883 if (len < 0)
222f1806 884 return len;
63adc6fb 885
1da177e4 886 memset(name, 0, sizeof(name));
222f1806 887 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT
888 return -EFAULT;
889 i += len;
222f1806
LC
890
891 max = count - i;
1da177e4 892 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC
893 if (len < 0)
894 return len;
895
1da177e4
LT
896 i += len;
897
898 if (debug) {
86c2c0a8 899 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE
900 char tb[copy + 1];
901 if (copy_from_user(tb, user_buffer, copy))
1da177e4 902 return -EFAULT;
448d7b5d 903 tb[copy] = 0;
f342cda7
JP
904 pr_debug("%s,%lu buffer -:%s:-\n",
905 name, (unsigned long)count, tb);
222f1806 906 }
1da177e4
LT
907
908 if (!strcmp(name, "min_pkt_size")) {
909 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 910 if (len < 0)
222f1806 911 return len;
63adc6fb 912
1da177e4 913 i += len;
222f1806
LC
914 if (value < 14 + 20 + 8)
915 value = 14 + 20 + 8;
916 if (value != pkt_dev->min_pkt_size) {
917 pkt_dev->min_pkt_size = value;
918 pkt_dev->cur_pkt_size = value;
919 }
920 sprintf(pg_result, "OK: min_pkt_size=%u",
921 pkt_dev->min_pkt_size);
1da177e4
LT
922 return count;
923 }
924
222f1806 925 if (!strcmp(name, "max_pkt_size")) {
1da177e4 926 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 927 if (len < 0)
222f1806 928 return len;
63adc6fb 929
1da177e4 930 i += len;
222f1806
LC
931 if (value < 14 + 20 + 8)
932 value = 14 + 20 + 8;
933 if (value != pkt_dev->max_pkt_size) {
934 pkt_dev->max_pkt_size = value;
935 pkt_dev->cur_pkt_size = value;
936 }
937 sprintf(pg_result, "OK: max_pkt_size=%u",
938 pkt_dev->max_pkt_size);
1da177e4
LT
939 return count;
940 }
941
222f1806 942 /* Shortcut for min = max */
1da177e4
LT
943
944 if (!strcmp(name, "pkt_size")) {
945 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 946 if (len < 0)
222f1806 947 return len;
63adc6fb 948
1da177e4 949 i += len;
222f1806
LC
950 if (value < 14 + 20 + 8)
951 value = 14 + 20 + 8;
952 if (value != pkt_dev->min_pkt_size) {
953 pkt_dev->min_pkt_size = value;
954 pkt_dev->max_pkt_size = value;
955 pkt_dev->cur_pkt_size = value;
956 }
1da177e4
LT
957 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
958 return count;
959 }
960
222f1806 961 if (!strcmp(name, "debug")) {
1da177e4 962 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 963 if (len < 0)
222f1806 964 return len;
63adc6fb 965
1da177e4 966 i += len;
222f1806 967 debug = value;
1da177e4
LT
968 sprintf(pg_result, "OK: debug=%u", debug);
969 return count;
970 }
971
222f1806 972 if (!strcmp(name, "frags")) {
1da177e4 973 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 974 if (len < 0)
222f1806 975 return len;
63adc6fb 976
1da177e4
LT
977 i += len;
978 pkt_dev->nfrags = value;
979 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
980 return count;
981 }
982 if (!strcmp(name, "delay")) {
983 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 984 if (len < 0)
222f1806 985 return len;
63adc6fb 986
1da177e4 987 i += len;
fd29cf72
SH
988 if (value == 0x7FFFFFFF)
989 pkt_dev->delay = ULLONG_MAX;
990 else
9240d715 991 pkt_dev->delay = (u64)value;
fd29cf72
SH
992
993 sprintf(pg_result, "OK: delay=%llu",
994 (unsigned long long) pkt_dev->delay);
1da177e4
LT
995 return count;
996 }
43d28b65
DT
997 if (!strcmp(name, "rate")) {
998 len = num_arg(&user_buffer[i], 10, &value);
999 if (len < 0)
1000 return len;
1001
1002 i += len;
1003 if (!value)
1004 return len;
1005 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
1006 if (debug)
f9467eae 1007 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT
1008
1009 sprintf(pg_result, "OK: rate=%lu", value);
1010 return count;
1011 }
1012 if (!strcmp(name, "ratep")) {
1013 len = num_arg(&user_buffer[i], 10, &value);
1014 if (len < 0)
1015 return len;
1016
1017 i += len;
1018 if (!value)
1019 return len;
1020 pkt_dev->delay = NSEC_PER_SEC/value;
1021 if (debug)
f9467eae 1022 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT
1023
1024 sprintf(pg_result, "OK: rate=%lu", value);
1025 return count;
1026 }
222f1806 1027 if (!strcmp(name, "udp_src_min")) {
1da177e4 1028 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1029 if (len < 0)
222f1806 1030 return len;
63adc6fb 1031
1da177e4 1032 i += len;
222f1806
LC
1033 if (value != pkt_dev->udp_src_min) {
1034 pkt_dev->udp_src_min = value;
1035 pkt_dev->cur_udp_src = value;
1036 }
1da177e4
LT
1037 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1038 return count;
1039 }
222f1806 1040 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1041 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1042 if (len < 0)
222f1806 1043 return len;
63adc6fb 1044
1da177e4 1045 i += len;
222f1806
LC
1046 if (value != pkt_dev->udp_dst_min) {
1047 pkt_dev->udp_dst_min = value;
1048 pkt_dev->cur_udp_dst = value;
1049 }
1da177e4
LT
1050 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1051 return count;
1052 }
222f1806 1053 if (!strcmp(name, "udp_src_max")) {
1da177e4 1054 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1055 if (len < 0)
222f1806 1056 return len;
63adc6fb 1057
1da177e4 1058 i += len;
222f1806
LC
1059 if (value != pkt_dev->udp_src_max) {
1060 pkt_dev->udp_src_max = value;
1061 pkt_dev->cur_udp_src = value;
1062 }
1da177e4
LT
1063 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1064 return count;
1065 }
222f1806 1066 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1067 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1068 if (len < 0)
222f1806 1069 return len;
63adc6fb 1070
1da177e4 1071 i += len;
222f1806
LC
1072 if (value != pkt_dev->udp_dst_max) {
1073 pkt_dev->udp_dst_max = value;
1074 pkt_dev->cur_udp_dst = value;
1075 }
1da177e4
LT
1076 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1077 return count;
1078 }
1079 if (!strcmp(name, "clone_skb")) {
1080 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1081 if (len < 0)
222f1806 1082 return len;
d8873315
NH
1083 if ((value > 0) &&
1084 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1085 return -ENOTSUPP;
1da177e4 1086 i += len;
222f1806
LC
1087 pkt_dev->clone_skb = value;
1088
1da177e4
LT
1089 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1090 return count;
1091 }
1092 if (!strcmp(name, "count")) {
1093 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1094 if (len < 0)
222f1806 1095 return len;
63adc6fb 1096
1da177e4
LT
1097 i += len;
1098 pkt_dev->count = value;
1099 sprintf(pg_result, "OK: count=%llu",
222f1806 1100 (unsigned long long)pkt_dev->count);
1da177e4
LT
1101 return count;
1102 }
1103 if (!strcmp(name, "src_mac_count")) {
1104 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1105 if (len < 0)
222f1806 1106 return len;
63adc6fb 1107
1da177e4
LT
1108 i += len;
1109 if (pkt_dev->src_mac_count != value) {
222f1806
LC
1110 pkt_dev->src_mac_count = value;
1111 pkt_dev->cur_src_mac_offset = 0;
1112 }
1113 sprintf(pg_result, "OK: src_mac_count=%d",
1114 pkt_dev->src_mac_count);
1da177e4
LT
1115 return count;
1116 }
1117 if (!strcmp(name, "dst_mac_count")) {
1118 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1119 if (len < 0)
222f1806 1120 return len;
63adc6fb 1121
1da177e4
LT
1122 i += len;
1123 if (pkt_dev->dst_mac_count != value) {
222f1806
LC
1124 pkt_dev->dst_mac_count = value;
1125 pkt_dev->cur_dst_mac_offset = 0;
1126 }
1127 sprintf(pg_result, "OK: dst_mac_count=%d",
1128 pkt_dev->dst_mac_count);
1da177e4
LT
1129 return count;
1130 }
38b2cf29
AS
1131 if (!strcmp(name, "burst")) {
1132 len = num_arg(&user_buffer[i], 10, &value);
1133 if (len < 0)
1134 return len;
1135
1136 i += len;
52d6c8c6
ED
1137 if ((value > 1) &&
1138 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1139 return -ENOTSUPP;
38b2cf29
AS
1140 pkt_dev->burst = value < 1 ? 1 : value;
1141 sprintf(pg_result, "OK: burst=%d", pkt_dev->burst);
1142 return count;
1143 }
e99b99b4
RO
1144 if (!strcmp(name, "node")) {
1145 len = num_arg(&user_buffer[i], 10, &value);
1146 if (len < 0)
1147 return len;
1148
1149 i += len;
1150
1151 if (node_possible(value)) {
1152 pkt_dev->node = value;
1153 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED
1154 if (pkt_dev->page) {
1155 put_page(pkt_dev->page);
1156 pkt_dev->page = NULL;
1157 }
e99b99b4
RO
1158 }
1159 else
1160 sprintf(pg_result, "ERROR: node not possible");
1161 return count;
1162 }
1da177e4 1163 if (!strcmp(name, "flag")) {
222f1806
LC
1164 char f[32];
1165 memset(f, 0, 32);
1da177e4 1166 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1167 if (len < 0)
222f1806 1168 return len;
63adc6fb 1169
1da177e4
LT
1170 if (copy_from_user(f, &user_buffer[i], len))
1171 return -EFAULT;
1172 i += len;
222f1806
LC
1173 if (strcmp(f, "IPSRC_RND") == 0)
1174 pkt_dev->flags |= F_IPSRC_RND;
1175
1176 else if (strcmp(f, "!IPSRC_RND") == 0)
1177 pkt_dev->flags &= ~F_IPSRC_RND;
1178
1179 else if (strcmp(f, "TXSIZE_RND") == 0)
1180 pkt_dev->flags |= F_TXSIZE_RND;
1181
1182 else if (strcmp(f, "!TXSIZE_RND") == 0)
1183 pkt_dev->flags &= ~F_TXSIZE_RND;
1184
1185 else if (strcmp(f, "IPDST_RND") == 0)
1186 pkt_dev->flags |= F_IPDST_RND;
1187
1188 else if (strcmp(f, "!IPDST_RND") == 0)
1189 pkt_dev->flags &= ~F_IPDST_RND;
1190
1191 else if (strcmp(f, "UDPSRC_RND") == 0)
1192 pkt_dev->flags |= F_UDPSRC_RND;
1193
1194 else if (strcmp(f, "!UDPSRC_RND") == 0)
1195 pkt_dev->flags &= ~F_UDPSRC_RND;
1196
1197 else if (strcmp(f, "UDPDST_RND") == 0)
1198 pkt_dev->flags |= F_UDPDST_RND;
1199
1200 else if (strcmp(f, "!UDPDST_RND") == 0)
1201 pkt_dev->flags &= ~F_UDPDST_RND;
1202
1203 else if (strcmp(f, "MACSRC_RND") == 0)
1204 pkt_dev->flags |= F_MACSRC_RND;
1205
1206 else if (strcmp(f, "!MACSRC_RND") == 0)
1207 pkt_dev->flags &= ~F_MACSRC_RND;
1208
1209 else if (strcmp(f, "MACDST_RND") == 0)
1210 pkt_dev->flags |= F_MACDST_RND;
1211
1212 else if (strcmp(f, "!MACDST_RND") == 0)
1213 pkt_dev->flags &= ~F_MACDST_RND;
1214
ca6549af
SW
1215 else if (strcmp(f, "MPLS_RND") == 0)
1216 pkt_dev->flags |= F_MPLS_RND;
1217
1218 else if (strcmp(f, "!MPLS_RND") == 0)
1219 pkt_dev->flags &= ~F_MPLS_RND;
1220
34954ddc
FF
1221 else if (strcmp(f, "VID_RND") == 0)
1222 pkt_dev->flags |= F_VID_RND;
1223
1224 else if (strcmp(f, "!VID_RND") == 0)
1225 pkt_dev->flags &= ~F_VID_RND;
1226
1227 else if (strcmp(f, "SVID_RND") == 0)
1228 pkt_dev->flags |= F_SVID_RND;
1229
1230 else if (strcmp(f, "!SVID_RND") == 0)
1231 pkt_dev->flags &= ~F_SVID_RND;
1232
007a531b
JHS
1233 else if (strcmp(f, "FLOW_SEQ") == 0)
1234 pkt_dev->flags |= F_FLOW_SEQ;
1235
45b270f8
RO
1236 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1237 pkt_dev->flags |= F_QUEUE_MAP_RND;
1238
1239 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1240 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO
1241
1242 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1243 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1244
1245 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1246 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS
1247#ifdef CONFIG_XFRM
1248 else if (strcmp(f, "IPSEC") == 0)
1249 pkt_dev->flags |= F_IPSEC_ON;
1250#endif
1251
1ca7768c
FF
1252 else if (strcmp(f, "!IPV6") == 0)
1253 pkt_dev->flags &= ~F_IPV6;
1254
e99b99b4
RO
1255 else if (strcmp(f, "NODE_ALLOC") == 0)
1256 pkt_dev->flags |= F_NODE;
1257
1258 else if (strcmp(f, "!NODE_ALLOC") == 0)
1259 pkt_dev->flags &= ~F_NODE;
1260
c26bf4a5
TG
1261 else if (strcmp(f, "UDPCSUM") == 0)
1262 pkt_dev->flags |= F_UDPCSUM;
1263
1264 else if (strcmp(f, "!UDPCSUM") == 0)
1265 pkt_dev->flags &= ~F_UDPCSUM;
1266
afb84b62
JDB
1267 else if (strcmp(f, "NO_TIMESTAMP") == 0)
1268 pkt_dev->flags |= F_NO_TIMESTAMP;
1269
222f1806
LC
1270 else {
1271 sprintf(pg_result,
1272 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1273 f,
1ca7768c 1274 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
72f8e06f
MK
1275 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1276 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1277 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
afb84b62 1278 "NO_TIMESTAMP, "
72f8e06f
MK
1279#ifdef CONFIG_XFRM
1280 "IPSEC, "
1281#endif
1282 "NODE_ALLOC\n");
222f1806
LC
1283 return count;
1284 }
1da177e4
LT
1285 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1286 return count;
1287 }
1288 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1289 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1290 if (len < 0)
222f1806 1291 return len;
1da177e4 1292
222f1806 1293 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1294 return -EFAULT;
222f1806
LC
1295 buf[len] = 0;
1296 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1297 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1298 strncpy(pkt_dev->dst_min, buf, len);
1299 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1300 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1301 }
1302 if (debug)
f342cda7 1303 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1304 i += len;
1da177e4
LT
1305 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1306 return count;
1307 }
1308 if (!strcmp(name, "dst_max")) {
1309 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1310 if (len < 0)
222f1806 1311 return len;
63adc6fb 1312
1da177e4 1313
222f1806 1314 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT
1315 return -EFAULT;
1316
222f1806
LC
1317 buf[len] = 0;
1318 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1319 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1320 strncpy(pkt_dev->dst_max, buf, len);
1321 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1322 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1323 }
1324 if (debug)
f342cda7 1325 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT
1326 i += len;
1327 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1328 return count;
1329 }
1330 if (!strcmp(name, "dst6")) {
1331 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC
1332 if (len < 0)
1333 return len;
1da177e4
LT
1334
1335 pkt_dev->flags |= F_IPV6;
1336
222f1806 1337 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1338 return -EFAULT;
222f1806 1339 buf[len] = 0;
1da177e4 1340
c468fb13 1341 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1342 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1343
4e3fd7a0 1344 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1345
222f1806 1346 if (debug)
f342cda7 1347 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1348
222f1806 1349 i += len;
1da177e4
LT
1350 sprintf(pg_result, "OK: dst6=%s", buf);
1351 return count;
1352 }
1353 if (!strcmp(name, "dst6_min")) {
1354 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC
1355 if (len < 0)
1356 return len;
1da177e4
LT
1357
1358 pkt_dev->flags |= F_IPV6;
1359
222f1806 1360 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1361 return -EFAULT;
222f1806 1362 buf[len] = 0;
1da177e4 1363
c468fb13 1364 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1365 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1366
4e3fd7a0 1367 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1368 if (debug)
f342cda7 1369 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1370
222f1806 1371 i += len;
1da177e4
LT
1372 sprintf(pg_result, "OK: dst6_min=%s", buf);
1373 return count;
1374 }
1375 if (!strcmp(name, "dst6_max")) {
1376 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC
1377 if (len < 0)
1378 return len;
1da177e4
LT
1379
1380 pkt_dev->flags |= F_IPV6;
1381
222f1806 1382 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1383 return -EFAULT;
222f1806 1384 buf[len] = 0;
1da177e4 1385
c468fb13 1386 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1387 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1388
222f1806 1389 if (debug)
f342cda7 1390 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1391
222f1806 1392 i += len;
1da177e4
LT
1393 sprintf(pg_result, "OK: dst6_max=%s", buf);
1394 return count;
1395 }
1396 if (!strcmp(name, "src6")) {
1397 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC
1398 if (len < 0)
1399 return len;
1da177e4
LT
1400
1401 pkt_dev->flags |= F_IPV6;
1402
222f1806 1403 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1404 return -EFAULT;
222f1806 1405 buf[len] = 0;
1da177e4 1406
c468fb13 1407 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1408 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1409
4e3fd7a0 1410 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1411
222f1806 1412 if (debug)
f342cda7 1413 pr_debug("src6 set to: %s\n", buf);
222f1806
LC
1414
1415 i += len;
1da177e4
LT
1416 sprintf(pg_result, "OK: src6=%s", buf);
1417 return count;
1418 }
1419 if (!strcmp(name, "src_min")) {
1420 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1421 if (len < 0)
222f1806 1422 return len;
63adc6fb 1423
222f1806 1424 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1425 return -EFAULT;
222f1806
LC
1426 buf[len] = 0;
1427 if (strcmp(buf, pkt_dev->src_min) != 0) {
1428 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1429 strncpy(pkt_dev->src_min, buf, len);
1430 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1431 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1432 }
1433 if (debug)
f342cda7 1434 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT
1435 i += len;
1436 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1437 return count;
1438 }
1439 if (!strcmp(name, "src_max")) {
1440 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1441 if (len < 0)
222f1806 1442 return len;
63adc6fb 1443
222f1806 1444 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1445 return -EFAULT;
222f1806
LC
1446 buf[len] = 0;
1447 if (strcmp(buf, pkt_dev->src_max) != 0) {
1448 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1449 strncpy(pkt_dev->src_max, buf, len);
1450 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1451 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1452 }
1453 if (debug)
f342cda7 1454 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT
1455 i += len;
1456 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1457 return count;
1458 }
1459 if (!strcmp(name, "dst_mac")) {
1da177e4 1460 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1461 if (len < 0)
222f1806 1462 return len;
63adc6fb 1463
1da177e4 1464 memset(valstr, 0, sizeof(valstr));
222f1806 1465 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1466 return -EFAULT;
1da177e4 1467
4940fc88
AD
1468 if (!mac_pton(valstr, pkt_dev->dst_mac))
1469 return -EINVAL;
1da177e4 1470 /* Set up Dest MAC */
9ea08b12 1471 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
222f1806 1472
4940fc88 1473 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT
1474 return count;
1475 }
1476 if (!strcmp(name, "src_mac")) {
1da177e4 1477 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1478 if (len < 0)
222f1806 1479 return len;
63adc6fb 1480
1da177e4 1481 memset(valstr, 0, sizeof(valstr));
222f1806 1482 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1483 return -EFAULT;
1da177e4 1484
4940fc88
AD
1485 if (!mac_pton(valstr, pkt_dev->src_mac))
1486 return -EINVAL;
ce5d0b47 1487 /* Set up Src MAC */
9ea08b12 1488 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
ce5d0b47 1489
4940fc88 1490 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT
1491 return count;
1492 }
1493
222f1806
LC
1494 if (!strcmp(name, "clear_counters")) {
1495 pktgen_clear_counters(pkt_dev);
1496 sprintf(pg_result, "OK: Clearing counters.\n");
1497 return count;
1498 }
1da177e4
LT
1499
1500 if (!strcmp(name, "flows")) {
1501 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1502 if (len < 0)
222f1806 1503 return len;
63adc6fb 1504
1da177e4
LT
1505 i += len;
1506 if (value > MAX_CFLOWS)
1507 value = MAX_CFLOWS;
1508
1509 pkt_dev->cflows = value;
1510 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1511 return count;
1512 }
6bae9190 1513#ifdef CONFIG_XFRM
de4aee7d
FD
1514 if (!strcmp(name, "spi")) {
1515 len = num_arg(&user_buffer[i], 10, &value);
1516 if (len < 0)
1517 return len;
1518
1519 i += len;
1520 pkt_dev->spi = value;
1521 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1522 return count;
1523 }
6bae9190 1524#endif
1da177e4
LT
1525 if (!strcmp(name, "flowlen")) {
1526 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1527 if (len < 0)
222f1806 1528 return len;
63adc6fb 1529
1da177e4
LT
1530 i += len;
1531 pkt_dev->lflow = value;
1532 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1533 return count;
1534 }
222f1806 1535
45b270f8
RO
1536 if (!strcmp(name, "queue_map_min")) {
1537 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1538 if (len < 0)
45b270f8 1539 return len;
63adc6fb 1540
45b270f8
RO
1541 i += len;
1542 pkt_dev->queue_map_min = value;
1543 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1544 return count;
1545 }
1546
1547 if (!strcmp(name, "queue_map_max")) {
1548 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1549 if (len < 0)
45b270f8 1550 return len;
63adc6fb 1551
45b270f8
RO
1552 i += len;
1553 pkt_dev->queue_map_max = value;
1554 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1555 return count;
1556 }
1557
ca6549af 1558 if (!strcmp(name, "mpls")) {
95c96174 1559 unsigned int n, cnt;
cfcabdcc 1560
ca6549af 1561 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH
1562 if (len < 0)
1563 return len;
ca6549af 1564 i += len;
cfcabdcc 1565 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1566 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH
1567 cnt += sprintf(pg_result + cnt,
1568 "%08x%s", ntohl(pkt_dev->labels[n]),
1569 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF
1570
1571 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1572 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1573 pkt_dev->svlan_id = 0xffff;
1574
1575 if (debug)
f342cda7 1576 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF
1577 }
1578 return count;
1579 }
1580
1581 if (!strcmp(name, "vlan_id")) {
1582 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1583 if (len < 0)
34954ddc 1584 return len;
63adc6fb 1585
34954ddc
FF
1586 i += len;
1587 if (value <= 4095) {
1588 pkt_dev->vlan_id = value; /* turn on VLAN */
1589
1590 if (debug)
f342cda7 1591 pr_debug("VLAN turned on\n");
34954ddc
FF
1592
1593 if (debug && pkt_dev->nr_labels)
f342cda7 1594 pr_debug("MPLS auto turned off\n");
34954ddc
FF
1595
1596 pkt_dev->nr_labels = 0; /* turn off MPLS */
1597 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1598 } else {
1599 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1600 pkt_dev->svlan_id = 0xffff;
1601
1602 if (debug)
f342cda7 1603 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF
1604 }
1605 return count;
1606 }
1607
1608 if (!strcmp(name, "vlan_p")) {
1609 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1610 if (len < 0)
34954ddc 1611 return len;
63adc6fb 1612
34954ddc
FF
1613 i += len;
1614 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1615 pkt_dev->vlan_p = value;
1616 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1617 } else {
1618 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1619 }
1620 return count;
1621 }
1622
1623 if (!strcmp(name, "vlan_cfi")) {
1624 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1625 if (len < 0)
34954ddc 1626 return len;
63adc6fb 1627
34954ddc
FF
1628 i += len;
1629 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1630 pkt_dev->vlan_cfi = value;
1631 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1632 } else {
1633 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1634 }
1635 return count;
1636 }
1637
1638 if (!strcmp(name, "svlan_id")) {
1639 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1640 if (len < 0)
34954ddc 1641 return len;
63adc6fb 1642
34954ddc
FF
1643 i += len;
1644 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1645 pkt_dev->svlan_id = value; /* turn on SVLAN */
1646
1647 if (debug)
f342cda7 1648 pr_debug("SVLAN turned on\n");
34954ddc
FF
1649
1650 if (debug && pkt_dev->nr_labels)
f342cda7 1651 pr_debug("MPLS auto turned off\n");
34954ddc
FF
1652
1653 pkt_dev->nr_labels = 0; /* turn off MPLS */
1654 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1655 } else {
1656 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1657 pkt_dev->svlan_id = 0xffff;
1658
1659 if (debug)
f342cda7 1660 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF
1661 }
1662 return count;
1663 }
1664
1665 if (!strcmp(name, "svlan_p")) {
1666 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1667 if (len < 0)
34954ddc 1668 return len;
63adc6fb 1669
34954ddc
FF
1670 i += len;
1671 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1672 pkt_dev->svlan_p = value;
1673 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1674 } else {
1675 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1676 }
1677 return count;
1678 }
1679
1680 if (!strcmp(name, "svlan_cfi")) {
1681 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1682 if (len < 0)
34954ddc 1683 return len;
63adc6fb 1684
34954ddc
FF
1685 i += len;
1686 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1687 pkt_dev->svlan_cfi = value;
1688 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1689 } else {
1690 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1691 }
ca6549af
SW
1692 return count;
1693 }
1694
1ca7768c
FF
1695 if (!strcmp(name, "tos")) {
1696 __u32 tmp_value = 0;
1697 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1698 if (len < 0)
1ca7768c 1699 return len;
63adc6fb 1700
1ca7768c
FF
1701 i += len;
1702 if (len == 2) {
1703 pkt_dev->tos = tmp_value;
1704 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1705 } else {
1706 sprintf(pg_result, "ERROR: tos must be 00-ff");
1707 }
1708 return count;
1709 }
1710
1711 if (!strcmp(name, "traffic_class")) {
1712 __u32 tmp_value = 0;
1713 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1714 if (len < 0)
1ca7768c 1715 return len;
63adc6fb 1716
1ca7768c
FF
1717 i += len;
1718 if (len == 2) {
1719 pkt_dev->traffic_class = tmp_value;
1720 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1721 } else {
1722 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1723 }
1724 return count;
1725 }
1726
9e50e3ac
JF
1727 if (!strcmp(name, "skb_priority")) {
1728 len = num_arg(&user_buffer[i], 9, &value);
1729 if (len < 0)
1730 return len;
1731
1732 i += len;
1733 pkt_dev->skb_priority = value;
1734 sprintf(pg_result, "OK: skb_priority=%i",
1735 pkt_dev->skb_priority);
1736 return count;
1737 }
1738
1da177e4
LT
1739 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1740 return -EINVAL;
1741}
1742
d50a6b56 1743static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1744{
d9dda78b 1745 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1746}
1da177e4 1747
9a32144e 1748static const struct file_operations pktgen_if_fops = {
222f1806
LC
1749 .owner = THIS_MODULE,
1750 .open = pktgen_if_open,
1751 .read = seq_read,
1752 .llseek = seq_lseek,
1753 .write = pktgen_if_write,
1754 .release = single_release,
d50a6b56 1755};
1da177e4 1756
d50a6b56
SH
1757static int pktgen_thread_show(struct seq_file *seq, void *v)
1758{
222f1806 1759 struct pktgen_thread *t = seq->private;
648fda74 1760 const struct pktgen_dev *pkt_dev;
d50a6b56
SH
1761
1762 BUG_ON(!t);
1da177e4 1763
97dc48e2 1764 seq_puts(seq, "Running: ");
1da177e4 1765
8788370a
JDB
1766 rcu_read_lock();
1767 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1768 if (pkt_dev->running)
593f63b0 1769 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1770
97dc48e2 1771 seq_puts(seq, "\nStopped: ");
222f1806 1772
8788370a 1773 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1774 if (!pkt_dev->running)
593f63b0 1775 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT
1776
1777 if (t->result[0])
d50a6b56 1778 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1779 else
97dc48e2 1780 seq_puts(seq, "\nResult: NA\n");
1da177e4 1781
8788370a 1782 rcu_read_unlock();
1da177e4 1783
d50a6b56 1784 return 0;
1da177e4
LT
1785}
1786
d50a6b56 1787static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC
1788 const char __user * user_buffer,
1789 size_t count, loff_t * offset)
1da177e4 1790{
8a994a71 1791 struct seq_file *seq = file->private_data;
222f1806 1792 struct pktgen_thread *t = seq->private;
d6182223 1793 int i, max, len, ret;
1da177e4 1794 char name[40];
222f1806 1795 char *pg_result;
d50a6b56 1796
1da177e4 1797 if (count < 1) {
222f1806 1798 // sprintf(pg_result, "Wrong command format");
1da177e4
LT
1799 return -EINVAL;
1800 }
d50a6b56 1801
d6182223
PG
1802 max = count;
1803 len = count_trail_chars(user_buffer, max);
222f1806 1804 if (len < 0)
d50a6b56
SH
1805 return len;
1806
d6182223 1807 i = len;
d50a6b56 1808
1da177e4
LT
1809 /* Read variable name */
1810
1811 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1812 if (len < 0)
d50a6b56 1813 return len;
222f1806 1814
1da177e4
LT
1815 memset(name, 0, sizeof(name));
1816 if (copy_from_user(name, &user_buffer[i], len))
1817 return -EFAULT;
1818 i += len;
d50a6b56 1819
222f1806 1820 max = count - i;
1da177e4 1821 len = count_trail_chars(&user_buffer[i], max);
222f1806 1822 if (len < 0)
d50a6b56
SH
1823 return len;
1824
1da177e4
LT
1825 i += len;
1826
d50a6b56 1827 if (debug)
f342cda7 1828 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1829
222f1806 1830 if (!t) {
f9467eae 1831 pr_err("ERROR: No thread\n");
1da177e4
LT
1832 ret = -EINVAL;
1833 goto out;
1834 }
1835
1836 pg_result = &(t->result[0]);
1837
222f1806
LC
1838 if (!strcmp(name, "add_device")) {
1839 char f[32];
1840 memset(f, 0, 32);
1da177e4 1841 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC
1842 if (len < 0) {
1843 ret = len;
1da177e4
LT
1844 goto out;
1845 }
222f1806 1846 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT
1847 return -EFAULT;
1848 i += len;
6146e6a4 1849 mutex_lock(&pktgen_thread_lock);
604dfd6e 1850 ret = pktgen_add_device(t, f);
6146e6a4 1851 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW
1852 if (!ret) {
1853 ret = count;
1854 sprintf(pg_result, "OK: add_device=%s", f);
1855 } else
1856 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT
1857 goto out;
1858 }
1859
222f1806 1860 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1861 mutex_lock(&pktgen_thread_lock);
95ed63f7 1862 t->control |= T_REMDEVALL;
6146e6a4 1863 mutex_unlock(&pktgen_thread_lock);
222f1806 1864 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1865 ret = count;
222f1806 1866 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT
1867 goto out;
1868 }
1869
222f1806 1870 if (!strcmp(name, "max_before_softirq")) {
b163911f 1871 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1872 ret = count;
1da177e4
LT
1873 goto out;
1874 }
1875
1876 ret = -EINVAL;
222f1806 1877out:
1da177e4
LT
1878 return ret;
1879}
1880
d50a6b56 1881static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1882{
d9dda78b 1883 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT
1884}
1885
9a32144e 1886static const struct file_operations pktgen_thread_fops = {
222f1806
LC
1887 .owner = THIS_MODULE,
1888 .open = pktgen_thread_open,
1889 .read = seq_read,
1890 .llseek = seq_lseek,
1891 .write = pktgen_thread_write,
1892 .release = single_release,
d50a6b56 1893};
1da177e4
LT
1894
1895/* Think find or remove for NN */
4e58a027
CW
1896static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1897 const char *ifname, int remove)
1da177e4
LT
1898{
1899 struct pktgen_thread *t;
1900 struct pktgen_dev *pkt_dev = NULL;
3e984840 1901 bool exact = (remove == FIND);
1da177e4 1902
4e58a027 1903 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1904 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1905 if (pkt_dev) {
222f1806 1906 if (remove) {
222f1806
LC
1907 pkt_dev->removal_mark = 1;
1908 t->control |= T_REMDEV;
222f1806 1909 }
1da177e4
LT
1910 break;
1911 }
1da177e4 1912 }
222f1806 1913 return pkt_dev;
1da177e4
LT
1914}
1915
95ed63f7
AK
1916/*
1917 * mark a device for removal
1918 */
4e58a027 1919static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT
1920{
1921 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK
1922 const int max_tries = 10, msec_per_try = 125;
1923 int i = 0;
95ed63f7 1924
6146e6a4 1925 mutex_lock(&pktgen_thread_lock);
f9467eae 1926 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1927
222f1806 1928 while (1) {
95ed63f7 1929
4e58a027 1930 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC
1931 if (pkt_dev == NULL)
1932 break; /* success */
95ed63f7 1933
6146e6a4 1934 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP
1935 pr_debug("%s: waiting for %s to disappear....\n",
1936 __func__, ifname);
95ed63f7 1937 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1938 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK
1939
1940 if (++i >= max_tries) {
f9467eae
JP
1941 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1942 __func__, msec_per_try * i, ifname);
95ed63f7
AK
1943 break;
1944 }
1945
1946 }
1947
6146e6a4 1948 mutex_unlock(&pktgen_thread_lock);
39df232f 1949}
95ed63f7 1950
4e58a027 1951static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH
1952{
1953 struct pktgen_thread *t;
1954
4e58a027 1955 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH
1956 struct pktgen_dev *pkt_dev;
1957
8788370a
JDB
1958 rcu_read_lock();
1959 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
39df232f
SH
1960 if (pkt_dev->odev != dev)
1961 continue;
1962
a8ca16ea 1963 proc_remove(pkt_dev->entry);
39df232f 1964
2975315b 1965 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1966 pn->proc_dir,
2975315b
AD
1967 &pktgen_if_fops,
1968 pkt_dev);
39df232f 1969 if (!pkt_dev->entry)
f9467eae
JP
1970 pr_err("can't move proc entry for '%s'\n",
1971 dev->name);
39df232f
SH
1972 break;
1973 }
8788370a 1974 rcu_read_unlock();
39df232f 1975 }
1da177e4
LT
1976}
1977
222f1806
LC
1978static int pktgen_device_event(struct notifier_block *unused,
1979 unsigned long event, void *ptr)
1da177e4 1980{
351638e7 1981 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 1982 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1983
4e58a027 1984 if (pn->pktgen_exiting)
e9dc8653
EB
1985 return NOTIFY_DONE;
1986
1da177e4
LT
1987 /* It is OK that we do not hold the group lock right now,
1988 * as we run under the RTNL lock.
1989 */
1990
1991 switch (event) {
39df232f 1992 case NETDEV_CHANGENAME:
4e58a027 1993 pktgen_change_name(pn, dev);
1da177e4 1994 break;
222f1806 1995
1da177e4 1996 case NETDEV_UNREGISTER:
4e58a027 1997 pktgen_mark_device(pn, dev->name);
1da177e4 1998 break;
3ff50b79 1999 }
1da177e4
LT
2000
2001 return NOTIFY_DONE;
2002}
2003
4e58a027
CW
2004static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
2005 struct pktgen_dev *pkt_dev,
63adc6fb 2006 const char *ifname)
e6fce5b9
RO
2007{
2008 char b[IFNAMSIZ+5];
d6182223 2009 int i;
e6fce5b9 2010
63adc6fb
SH
2011 for (i = 0; ifname[i] != '@'; i++) {
2012 if (i == IFNAMSIZ)
e6fce5b9
RO
2013 break;
2014
2015 b[i] = ifname[i];
2016 }
2017 b[i] = 0;
2018
4e58a027 2019 return dev_get_by_name(pn->net, b);
e6fce5b9
RO
2020}
2021
2022
1da177e4
LT
2023/* Associate pktgen_dev with a device. */
2024
4e58a027
CW
2025static int pktgen_setup_dev(const struct pktgen_net *pn,
2026 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2027{
1da177e4 2028 struct net_device *odev;
39df232f 2029 int err;
1da177e4
LT
2030
2031 /* Clean old setups */
1da177e4
LT
2032 if (pkt_dev->odev) {
2033 dev_put(pkt_dev->odev);
222f1806
LC
2034 pkt_dev->odev = NULL;
2035 }
1da177e4 2036
4e58a027 2037 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 2038 if (!odev) {
f9467eae 2039 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2040 return -ENODEV;
1da177e4 2041 }
39df232f 2042
1da177e4 2043 if (odev->type != ARPHRD_ETHER) {
f9467eae 2044 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH
2045 err = -EINVAL;
2046 } else if (!netif_running(odev)) {
f9467eae 2047 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH
2048 err = -ENETDOWN;
2049 } else {
2050 pkt_dev->odev = odev;
2051 return 0;
1da177e4 2052 }
1da177e4 2053
1da177e4 2054 dev_put(odev);
39df232f 2055 return err;
1da177e4
LT
2056}
2057
2058/* Read pkt_dev from the interface and set up internal pktgen_dev
2059 * structure to have the right information to create/send packets
2060 */
2061static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2062{
64c00d81
AG
2063 int ntxq;
2064
222f1806 2065 if (!pkt_dev->odev) {
f9467eae 2066 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC
2067 sprintf(pkt_dev->result,
2068 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2069 return;
2070 }
2071
64c00d81
AG
2072 /* make sure that we don't pick a non-existing transmit queue */
2073 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2074
64c00d81 2075 if (ntxq <= pkt_dev->queue_map_min) {
294a0b7f
JP
2076 pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2077 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2078 pkt_dev->odevname);
26e29eed 2079 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2080 }
88271660 2081 if (pkt_dev->queue_map_max >= ntxq) {
294a0b7f
JP
2082 pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2083 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2084 pkt_dev->odevname);
26e29eed 2085 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG
2086 }
2087
222f1806 2088 /* Default to the interface's mac if not explicitly set. */
1da177e4 2089
f404e9a6 2090 if (is_zero_ether_addr(pkt_dev->src_mac))
9ea08b12 2091 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
1da177e4 2092
222f1806 2093 /* Set up Dest MAC */
9ea08b12 2094 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
1da177e4 2095
222f1806 2096 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW
2097 int i, set = 0, err = 1;
2098 struct inet6_dev *idev;
2099
68bf9f0b
AW
2100 if (pkt_dev->min_pkt_size == 0) {
2101 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2102 + sizeof(struct udphdr)
2103 + sizeof(struct pktgen_hdr)
2104 + pkt_dev->pkt_overhead;
2105 }
2106
222f1806
LC
2107 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2108 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT
2109 set = 1;
2110 break;
2111 }
2112
222f1806
LC
2113 if (!set) {
2114
1da177e4
LT
2115 /*
2116 * Use linklevel address if unconfigured.
2117 *
2118 * use ipv6_get_lladdr if/when it's get exported
2119 */
2120
8814c4b5 2121 rcu_read_lock();
63adc6fb
SH
2122 idev = __in6_dev_get(pkt_dev->odev);
2123 if (idev) {
1da177e4
LT
2124 struct inet6_ifaddr *ifp;
2125
2126 read_lock_bh(&idev->lock);
4c139b8c
AW
2127 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2128 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2129 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2130 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT
2131 err = 0;
2132 break;
2133 }
2134 }
2135 read_unlock_bh(&idev->lock);
2136 }
8814c4b5 2137 rcu_read_unlock();
222f1806 2138 if (err)
f9467eae 2139 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2140 }
222f1806 2141 } else {
68bf9f0b
AW
2142 if (pkt_dev->min_pkt_size == 0) {
2143 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2144 + sizeof(struct udphdr)
2145 + sizeof(struct pktgen_hdr)
2146 + pkt_dev->pkt_overhead;
2147 }
2148
1da177e4
LT
2149 pkt_dev->saddr_min = 0;
2150 pkt_dev->saddr_max = 0;
2151 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC
2152
2153 struct in_device *in_dev;
1da177e4
LT
2154
2155 rcu_read_lock();
e5ed6399 2156 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT
2157 if (in_dev) {
2158 if (in_dev->ifa_list) {
222f1806
LC
2159 pkt_dev->saddr_min =
2160 in_dev->ifa_list->ifa_address;
1da177e4
LT
2161 pkt_dev->saddr_max = pkt_dev->saddr_min;
2162 }
1da177e4
LT
2163 }
2164 rcu_read_unlock();
222f1806 2165 } else {
1da177e4
LT
2166 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2167 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2168 }
2169
2170 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2171 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2172 }
222f1806 2173 /* Initialize current values. */
68bf9f0b
AW
2174 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2175 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2176 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2177
222f1806
LC
2178 pkt_dev->cur_dst_mac_offset = 0;
2179 pkt_dev->cur_src_mac_offset = 0;
2180 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2181 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2182 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2183 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT
2184 pkt_dev->nflows = 0;
2185}
2186
fd29cf72
SH
2187
2188static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2189{
ef87979c 2190 ktime_t start_time, end_time;
417bc4b8 2191 s64 remaining;
2bc481cf
SH
2192 struct hrtimer_sleeper t;
2193
2194 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2195 hrtimer_set_expires(&t.timer, spin_until);
2196
43d28b65 2197 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED
2198 if (remaining <= 0) {
2199 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2200 return;
417bc4b8 2201 }
2bc481cf 2202
398f382c 2203 start_time = ktime_get();
33136d12
ED
2204 if (remaining < 100000) {
2205 /* for small delays (<100us), just loop until limit is reached */
2206 do {
398f382c
DB
2207 end_time = ktime_get();
2208 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2209 } else {
2bc481cf
SH
2210 /* see do_nanosleep */
2211 hrtimer_init_sleeper(&t, current);
2212 do {
2213 set_current_state(TASK_INTERRUPTIBLE);
2214 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2215 if (!hrtimer_active(&t.timer))
2216 t.task = NULL;
2217
2218 if (likely(t.task))
1da177e4 2219 schedule();
1da177e4 2220
2bc481cf
SH
2221 hrtimer_cancel(&t.timer);
2222 } while (t.task && pkt_dev->running && !signal_pending(current));
2223 __set_current_state(TASK_RUNNING);
398f382c 2224 end_time = ktime_get();
1da177e4 2225 }
ef87979c
SH
2226
2227 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2228 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT
2229}
2230
16dab72f
JHS
2231static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2232{
a553e4a6 2233 pkt_dev->pkt_overhead = 0;
16dab72f
JHS
2234 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2235 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2236 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2237}
2238
648fda74 2239static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2240{
648fda74 2241 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS
2242}
2243
2244static inline int f_pick(struct pktgen_dev *pkt_dev)
2245{
2246 int flow = pkt_dev->curfl;
2247
2248 if (pkt_dev->flags & F_FLOW_SEQ) {
2249 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2250 /* reset time */
2251 pkt_dev->flows[flow].count = 0;
1211a645 2252 pkt_dev->flows[flow].flags = 0;
007a531b
JHS
2253 pkt_dev->curfl += 1;
2254 if (pkt_dev->curfl >= pkt_dev->cflows)
2255 pkt_dev->curfl = 0; /*reset */
2256 }
2257 } else {
33d7c5e5 2258 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2259 pkt_dev->curfl = flow;
007a531b 2260
1211a645 2261 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2262 pkt_dev->flows[flow].count = 0;
1211a645
RO
2263 pkt_dev->flows[flow].flags = 0;
2264 }
007a531b
JHS
2265 }
2266
2267 return pkt_dev->curfl;
2268}
2269
a553e4a6
JHS
2270
2271#ifdef CONFIG_XFRM
2272/* If there was already an IPSEC SA, we keep it as is, else
2273 * we go look for it ...
2274*/
bd55775c 2275#define DUMMY_MARK 0
fea1ab0f 2276static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS
2277{
2278 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2279 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6 2280 if (!x) {
c454997e
FD
2281
2282 if (pkt_dev->spi) {
2283 /* We need as quick as possible to find the right SA
2284 * Searching with minimum criteria to archieve this.
2285 */
2286 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2287 } else {
2288 /* slow path: we dont already have xfrm_state */
2289 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2290 (xfrm_address_t *)&pkt_dev->cur_daddr,
2291 (xfrm_address_t *)&pkt_dev->cur_saddr,
2292 AF_INET,
2293 pkt_dev->ipsmode,
2294 pkt_dev->ipsproto, 0);
2295 }
a553e4a6
JHS
2296 if (x) {
2297 pkt_dev->flows[flow].x = x;
2298 set_pkt_overhead(pkt_dev);
63adc6fb 2299 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS
2300 }
2301
2302 }
2303}
2304#endif
fd2ea0a7
DM
2305static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2306{
e6fce5b9
RO
2307
2308 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2309 pkt_dev->cur_queue_map = smp_processor_id();
2310
896a7cf8 2311 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM
2312 __u16 t;
2313 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2314 t = prandom_u32() %
fd2ea0a7
DM
2315 (pkt_dev->queue_map_max -
2316 pkt_dev->queue_map_min + 1)
2317 + pkt_dev->queue_map_min;
2318 } else {
2319 t = pkt_dev->cur_queue_map + 1;
2320 if (t > pkt_dev->queue_map_max)
2321 t = pkt_dev->queue_map_min;
2322 }
2323 pkt_dev->cur_queue_map = t;
2324 }
bfdbc0ac 2325 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM
2326}
2327
1da177e4
LT
2328/* Increment/randomize headers according to flags and current values
2329 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2330 */
222f1806
LC
2331static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2332{
2333 __u32 imn;
2334 __u32 imx;
2335 int flow = 0;
1da177e4 2336
007a531b
JHS
2337 if (pkt_dev->cflows)
2338 flow = f_pick(pkt_dev);
1da177e4
LT
2339
2340 /* Deal with source MAC */
222f1806
LC
2341 if (pkt_dev->src_mac_count > 1) {
2342 __u32 mc;
2343 __u32 tmp;
2344
2345 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2346 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC
2347 else {
2348 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2349 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC
2350 pkt_dev->src_mac_count)
2351 pkt_dev->cur_src_mac_offset = 0;
2352 }
2353
2354 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2355 pkt_dev->hh[11] = tmp;
2356 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2357 pkt_dev->hh[10] = tmp;
2358 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2359 pkt_dev->hh[9] = tmp;
2360 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2361 pkt_dev->hh[8] = tmp;
2362 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2363 pkt_dev->hh[7] = tmp;
2364 }
2365
2366 /* Deal with Destination MAC */
2367 if (pkt_dev->dst_mac_count > 1) {
2368 __u32 mc;
2369 __u32 tmp;
2370
2371 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2372 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC
2373
2374 else {
2375 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2376 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC
2377 pkt_dev->dst_mac_count) {
2378 pkt_dev->cur_dst_mac_offset = 0;
2379 }
2380 }
2381
2382 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2383 pkt_dev->hh[5] = tmp;
2384 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2385 pkt_dev->hh[4] = tmp;
2386 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2387 pkt_dev->hh[3] = tmp;
2388 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2389 pkt_dev->hh[2] = tmp;
2390 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2391 pkt_dev->hh[1] = tmp;
2392 }
2393
ca6549af 2394 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2395 unsigned int i;
e71a4783 2396 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW
2397 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2398 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2399 ((__force __be32)prandom_u32() &
ca6549af
SW
2400 htonl(0x000fffff));
2401 }
2402
34954ddc 2403 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2404 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF
2405 }
2406
2407 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2408 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF
2409 }
2410
222f1806
LC
2411 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2412 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2413 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH
2414 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2415 + pkt_dev->udp_src_min;
222f1806
LC
2416
2417 else {
1da177e4
LT
2418 pkt_dev->cur_udp_src++;
2419 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2420 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC
2421 }
2422 }
2423
2424 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2425 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2426 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH
2427 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2428 + pkt_dev->udp_dst_min;
222f1806 2429 } else {
1da177e4 2430 pkt_dev->cur_udp_dst++;
222f1806 2431 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2432 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC
2433 }
2434 }
1da177e4
LT
2435
2436 if (!(pkt_dev->flags & F_IPV6)) {
2437
63adc6fb
SH
2438 imn = ntohl(pkt_dev->saddr_min);
2439 imx = ntohl(pkt_dev->saddr_max);
2440 if (imn < imx) {
1da177e4 2441 __u32 t;
222f1806 2442 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2443 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT
2444 else {
2445 t = ntohl(pkt_dev->cur_saddr);
2446 t++;
63adc6fb 2447 if (t > imx)
1da177e4 2448 t = imn;
63adc6fb 2449
1da177e4
LT
2450 }
2451 pkt_dev->cur_saddr = htonl(t);
2452 }
222f1806 2453
007a531b 2454 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT
2455 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2456 } else {
252e3346
AV
2457 imn = ntohl(pkt_dev->daddr_min);
2458 imx = ntohl(pkt_dev->daddr_max);
2459 if (imn < imx) {
1da177e4 2460 __u32 t;
252e3346 2461 __be32 s;
1da177e4
LT
2462 if (pkt_dev->flags & F_IPDST_RND) {
2463
70e3ba72 2464 do {
33d7c5e5
AM
2465 t = prandom_u32() %
2466 (imx - imn) + imn;
252e3346 2467 s = htonl(t);
70e3ba72
AM
2468 } while (ipv4_is_loopback(s) ||
2469 ipv4_is_multicast(s) ||
2470 ipv4_is_lbcast(s) ||
2471 ipv4_is_zeronet(s) ||
2472 ipv4_is_local_multicast(s));
252e3346
AV
2473 pkt_dev->cur_daddr = s;
2474 } else {
1da177e4
LT
2475 t = ntohl(pkt_dev->cur_daddr);
2476 t++;
2477 if (t > imx) {
2478 t = imn;
2479 }
2480 pkt_dev->cur_daddr = htonl(t);
2481 }
2482 }
222f1806 2483 if (pkt_dev->cflows) {
007a531b 2484 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC
2485 pkt_dev->flows[flow].cur_daddr =
2486 pkt_dev->cur_daddr;
a553e4a6
JHS
2487#ifdef CONFIG_XFRM
2488 if (pkt_dev->flags & F_IPSEC_ON)
2489 get_ipsec_sa(pkt_dev, flow);
2490#endif
1da177e4
LT
2491 pkt_dev->nflows++;
2492 }
2493 }
222f1806
LC
2494 } else { /* IPV6 * */
2495
06e30411 2496 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT
2497 int i;
2498
2499 /* Only random destinations yet */
2500
222f1806 2501 for (i = 0; i < 4; i++) {
1da177e4 2502 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2503 (((__force __be32)prandom_u32() |
222f1806
LC
2504 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2505 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2506 }
222f1806 2507 }
1da177e4
LT
2508 }
2509
222f1806
LC
2510 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2511 __u32 t;
2512 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2513 t = prandom_u32() %
5fa6fc76
SH
2514 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2515 + pkt_dev->min_pkt_size;
222f1806 2516 } else {
1da177e4 2517 t = pkt_dev->cur_pkt_size + 1;
222f1806 2518 if (t > pkt_dev->max_pkt_size)
1da177e4 2519 t = pkt_dev->min_pkt_size;
222f1806
LC
2520 }
2521 pkt_dev->cur_pkt_size = t;
2522 }
1da177e4 2523
fd2ea0a7 2524 set_cur_queue_map(pkt_dev);
45b270f8 2525
1da177e4
LT
2526 pkt_dev->flows[flow].count++;
2527}
2528
a553e4a6
JHS
2529
2530#ifdef CONFIG_XFRM
5537a055 2531static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
cf93d47e
FD
2532
2533 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2534};
2535
a553e4a6
JHS
2536static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2537{
2538 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2539 int err = 0;
6de9ace4 2540 struct net *net = dev_net(pkt_dev->odev);
a553e4a6
JHS
2541
2542 if (!x)
2543 return 0;
2544 /* XXX: we dont support tunnel mode for now until
2545 * we resolve the dst issue */
cf93d47e 2546 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
a553e4a6
JHS
2547 return 0;
2548
cf93d47e
FD
2549 /* But when user specify an valid SPI, transformation
2550 * supports both transport/tunnel mode + ESP/AH type.
2551 */
2552 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2553 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2554
2555 rcu_read_lock_bh();
13996378 2556 err = x->outer_mode->output(x, skb);
cf93d47e 2557 rcu_read_unlock_bh();
6de9ace4
FD
2558 if (err) {
2559 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
a553e4a6 2560 goto error;
6de9ace4 2561 }
a553e4a6 2562 err = x->type->output(x, skb);
6de9ace4
FD
2563 if (err) {
2564 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
a553e4a6 2565 goto error;
6de9ace4 2566 }
0af0a413 2567 spin_lock_bh(&x->lock);
63adc6fb 2568 x->curlft.bytes += skb->len;
a553e4a6 2569 x->curlft.packets++;
0af0a413 2570 spin_unlock_bh(&x->lock);
a553e4a6 2571error:
a553e4a6
JHS
2572 return err;
2573}
2574
475ac1e4 2575static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS
2576{
2577 if (pkt_dev->cflows) {
2578 /* let go of the SAs if we have them */
d6182223
PG
2579 int i;
2580 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS
2581 struct xfrm_state *x = pkt_dev->flows[i].x;
2582 if (x) {
2583 xfrm_state_put(x);
2584 pkt_dev->flows[i].x = NULL;
2585 }
2586 }
2587 }
2588}
2589
475ac1e4 2590static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS
2591 struct sk_buff *skb, __be16 protocol)
2592{
2593 if (pkt_dev->flags & F_IPSEC_ON) {
2594 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2595 int nhead = 0;
2596 if (x) {
2597 int ret;
2598 __u8 *eth;
3868204d 2599 struct iphdr *iph;
2600
a553e4a6 2601 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2602 if (nhead > 0) {
a553e4a6
JHS
2603 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2604 if (ret < 0) {
f9467eae
JP
2605 pr_err("Error expanding ipsec packet %d\n",
2606 ret);
b4bb4ac8 2607 goto err;
a553e4a6
JHS
2608 }
2609 }
2610
2611 /* ipsec is not expecting ll header */
2612 skb_pull(skb, ETH_HLEN);
2613 ret = pktgen_output_ipsec(skb, pkt_dev);
2614 if (ret) {
f9467eae 2615 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2616 goto err;
a553e4a6
JHS
2617 }
2618 /* restore ll */
2619 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2620 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2621 *(u16 *) &eth[12] = protocol;
3868204d 2622
2623 /* Update IPv4 header len as well as checksum value */
2624 iph = ip_hdr(skb);
2625 iph->tot_len = htons(skb->len - ETH_HLEN);
2626 ip_send_check(iph);
a553e4a6
JHS
2627 }
2628 }
2629 return 1;
b4bb4ac8
IJ
2630err:
2631 kfree_skb(skb);
2632 return 0;
a553e4a6
JHS
2633}
2634#endif
2635
ca6549af
SW
2636static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2637{
95c96174 2638 unsigned int i;
63adc6fb 2639 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2640 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2641
ca6549af
SW
2642 mpls--;
2643 *mpls |= MPLS_STACK_BOTTOM;
2644}
2645
0f37c605
AV
2646static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2647 unsigned int prio)
2648{
2649 return htons(id | (cfi << 12) | (prio << 13));
2650}
2651
26ad7879
ED
2652static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2653 int datalen)
2654{
2655 struct timeval timestamp;
2656 struct pktgen_hdr *pgh;
2657
2658 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2659 datalen -= sizeof(*pgh);
2660
2661 if (pkt_dev->nfrags <= 0) {
05aebe2e 2662 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED
2663 } else {
2664 int frags = pkt_dev->nfrags;
2665 int i, len;
7d36a991 2666 int frag_len;
26ad7879
ED
2667
2668
2669 if (frags > MAX_SKB_FRAGS)
2670 frags = MAX_SKB_FRAGS;
2671 len = datalen - frags * PAGE_SIZE;
2672 if (len > 0) {
2673 memset(skb_put(skb, len), 0, len);
2674 datalen = frags * PAGE_SIZE;
2675 }
2676
2677 i = 0;
7d36a991 2678 frag_len = (datalen/frags) < PAGE_SIZE ?
2679 (datalen/frags) : PAGE_SIZE;
26ad7879
ED
2680 while (datalen > 0) {
2681 if (unlikely(!pkt_dev->page)) {
2682 int node = numa_node_id();
2683
2684 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2685 node = pkt_dev->node;
2686 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2687 if (!pkt_dev->page)
2688 break;
2689 }
a0bec1cd 2690 get_page(pkt_dev->page);
ea2ab693 2691 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2692 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2693 /*last fragment, fill rest of data*/
2694 if (i == (frags - 1))
9e903e08
ED
2695 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2696 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2697 else
9e903e08
ED
2698 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2699 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2700 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2701 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED
2702 i++;
2703 skb_shinfo(skb)->nr_frags = i;
2704 }
26ad7879
ED
2705 }
2706
2707 /* Stamp the time, and sequence number,
2708 * convert them to network byte order
2709 */
2710 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2711 pgh->seq_num = htonl(pkt_dev->seq_num);
2712
afb84b62
JDB
2713 if (pkt_dev->flags & F_NO_TIMESTAMP) {
2714 pgh->tv_sec = 0;
2715 pgh->tv_usec = 0;
2716 } else {
2717 do_gettimeofday(&timestamp);
2718 pgh->tv_sec = htonl(timestamp.tv_sec);
2719 pgh->tv_usec = htonl(timestamp.tv_usec);
2720 }
26ad7879
ED
2721}
2722
7a6e288d
DB
2723static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2724 struct pktgen_dev *pkt_dev,
2725 unsigned int extralen)
2726{
2727 struct sk_buff *skb = NULL;
2728 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2729 pkt_dev->pkt_overhead;
2730
2731 if (pkt_dev->flags & F_NODE) {
2732 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2733
2734 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2735 if (likely(skb)) {
2736 skb_reserve(skb, NET_SKB_PAD);
2737 skb->dev = dev;
2738 }
2739 } else {
2740 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2741 }
2742
2743 return skb;
2744}
2745
222f1806
LC
2746static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2747 struct pktgen_dev *pkt_dev)
1da177e4
LT
2748{
2749 struct sk_buff *skb = NULL;
2750 __u8 *eth;
2751 struct udphdr *udph;
2752 int datalen, iplen;
2753 struct iphdr *iph;
d5f1ce9a 2754 __be16 protocol = htons(ETH_P_IP);
ca6549af 2755 __be32 *mpls;
34954ddc
FF
2756 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2757 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2758 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2759 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2760 u16 queue_map;
ca6549af
SW
2761
2762 if (pkt_dev->nr_labels)
d5f1ce9a 2763 protocol = htons(ETH_P_MPLS_UC);
222f1806 2764
34954ddc 2765 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2766 protocol = htons(ETH_P_8021Q);
34954ddc 2767
64053bee
RO
2768 /* Update any of the values, used when we're incrementing various
2769 * fields.
2770 */
2771 mod_cur_headers(pkt_dev);
eb589063 2772 queue_map = pkt_dev->cur_queue_map;
64053bee 2773
7ac5459e 2774 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2775
7a6e288d 2776 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT
2777 if (!skb) {
2778 sprintf(pkt_dev->result, "No memory");
2779 return NULL;
2780 }
2781
7a6e288d 2782 prefetchw(skb->data);
7ac5459e 2783 skb_reserve(skb, datalen);
1da177e4
LT
2784
2785 /* Reserve for ethernet and IP header */
2786 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW
2787 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2788 if (pkt_dev->nr_labels)
2789 mpls_push(mpls, pkt_dev);
34954ddc
FF
2790
2791 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2792 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2793 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV
2794 *svlan_tci = build_tci(pkt_dev->svlan_id,
2795 pkt_dev->svlan_cfi,
2796 pkt_dev->svlan_p);
34954ddc 2797 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2798 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF
2799 }
2800 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV
2801 *vlan_tci = build_tci(pkt_dev->vlan_id,
2802 pkt_dev->vlan_cfi,
2803 pkt_dev->vlan_p);
34954ddc 2804 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2805 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF
2806 }
2807
525cebed
TG
2808 skb_set_mac_header(skb, 0);
2809 skb_set_network_header(skb, skb->len);
2810 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2811
2812 skb_set_transport_header(skb, skb->len);
2813 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2814 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF
2815 skb->priority = pkt_dev->skb_priority;
2816
1da177e4 2817 memcpy(eth, pkt_dev->hh, 12);
252e3346 2818 *(__be16 *) & eth[12] = protocol;
1da177e4 2819
ca6549af
SW
2820 /* Eth + IPh + UDPh + mpls */
2821 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2822 pkt_dev->pkt_overhead;
6af773e7 2823 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2824 datalen = sizeof(struct pktgen_hdr);
222f1806 2825
1da177e4
LT
2826 udph->source = htons(pkt_dev->cur_udp_src);
2827 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2828 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2829 udph->check = 0;
1da177e4
LT
2830
2831 iph->ihl = 5;
2832 iph->version = 4;
2833 iph->ttl = 32;
1ca7768c 2834 iph->tos = pkt_dev->tos;
222f1806 2835 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT
2836 iph->saddr = pkt_dev->cur_saddr;
2837 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED
2838 iph->id = htons(pkt_dev->ip_id);
2839 pkt_dev->ip_id++;
1da177e4
LT
2840 iph->frag_off = 0;
2841 iplen = 20 + 8 + datalen;
2842 iph->tot_len = htons(iplen);
03c633e7 2843 ip_send_check(iph);
ca6549af 2844 skb->protocol = protocol;
1da177e4
LT
2845 skb->dev = odev;
2846 skb->pkt_type = PACKET_HOST;
c26bf4a5 2847
7744b5f3
SD
2848 pktgen_finalize_skb(pkt_dev, skb, datalen);
2849
c26bf4a5
TG
2850 if (!(pkt_dev->flags & F_UDPCSUM)) {
2851 skb->ip_summed = CHECKSUM_NONE;
2852 } else if (odev->features & NETIF_F_V4_CSUM) {
2853 skb->ip_summed = CHECKSUM_PARTIAL;
2854 skb->csum = 0;
7744b5f3 2855 udp4_hwcsum(skb, iph->saddr, iph->daddr);
c26bf4a5 2856 } else {
7744b5f3 2857 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0);
c26bf4a5
TG
2858
2859 /* add protocol-dependent pseudo-header */
7744b5f3 2860 udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
c26bf4a5
TG
2861 datalen + 8, IPPROTO_UDP, csum);
2862
2863 if (udph->check == 0)
2864 udph->check = CSUM_MANGLED_0;
2865 }
2866
a553e4a6
JHS
2867#ifdef CONFIG_XFRM
2868 if (!process_ipsec(pkt_dev, skb, protocol))
2869 return NULL;
2870#endif
2871
1da177e4
LT
2872 return skb;
2873}
2874
222f1806
LC
2875static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2876 struct pktgen_dev *pkt_dev)
1da177e4
LT
2877{
2878 struct sk_buff *skb = NULL;
2879 __u8 *eth;
2880 struct udphdr *udph;
c26bf4a5 2881 int datalen, udplen;
1da177e4 2882 struct ipv6hdr *iph;
d5f1ce9a 2883 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2884 __be32 *mpls;
34954ddc
FF
2885 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2886 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2887 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2888 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2889 u16 queue_map;
ca6549af
SW
2890
2891 if (pkt_dev->nr_labels)
d5f1ce9a 2892 protocol = htons(ETH_P_MPLS_UC);
64053bee 2893
34954ddc 2894 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2895 protocol = htons(ETH_P_8021Q);
34954ddc 2896
64053bee
RO
2897 /* Update any of the values, used when we're incrementing various
2898 * fields.
2899 */
2900 mod_cur_headers(pkt_dev);
eb589063 2901 queue_map = pkt_dev->cur_queue_map;
64053bee 2902
7a6e288d 2903 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT
2904 if (!skb) {
2905 sprintf(pkt_dev->result, "No memory");
2906 return NULL;
2907 }
2908
7a6e288d 2909 prefetchw(skb->data);
1da177e4
LT
2910 skb_reserve(skb, 16);
2911
2912 /* Reserve for ethernet and IP header */
2913 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW
2914 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2915 if (pkt_dev->nr_labels)
2916 mpls_push(mpls, pkt_dev);
34954ddc
FF
2917
2918 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2919 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2920 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV
2921 *svlan_tci = build_tci(pkt_dev->svlan_id,
2922 pkt_dev->svlan_cfi,
2923 pkt_dev->svlan_p);
34954ddc 2924 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2925 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF
2926 }
2927 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV
2928 *vlan_tci = build_tci(pkt_dev->vlan_id,
2929 pkt_dev->vlan_cfi,
2930 pkt_dev->vlan_p);
34954ddc 2931 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2932 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF
2933 }
2934
525cebed
TG
2935 skb_set_mac_header(skb, 0);
2936 skb_set_network_header(skb, skb->len);
2937 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2938
2939 skb_set_transport_header(skb, skb->len);
2940 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2941 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2942 skb->priority = pkt_dev->skb_priority;
1da177e4 2943
1da177e4 2944 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2945 *(__be16 *) &eth[12] = protocol;
64053bee 2946
ca6549af
SW
2947 /* Eth + IPh + UDPh + mpls */
2948 datalen = pkt_dev->cur_pkt_size - 14 -
2949 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2950 pkt_dev->pkt_overhead;
1da177e4 2951
5aa8b572 2952 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2953 datalen = sizeof(struct pktgen_hdr);
e87cc472 2954 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT
2955 }
2956
c26bf4a5 2957 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT
2958 udph->source = htons(pkt_dev->cur_udp_src);
2959 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG
2960 udph->len = htons(udplen);
2961 udph->check = 0;
1da177e4 2962
d5f1ce9a 2963 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2964
1ca7768c
FF
2965 if (pkt_dev->traffic_class) {
2966 /* Version + traffic class + flow (0) */
252e3346 2967 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF
2968 }
2969
1da177e4
LT
2970 iph->hop_limit = 32;
2971
c26bf4a5 2972 iph->payload_len = htons(udplen);
1da177e4
LT
2973 iph->nexthdr = IPPROTO_UDP;
2974
4e3fd7a0
AD
2975 iph->daddr = pkt_dev->cur_in6_daddr;
2976 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2977
ca6549af 2978 skb->protocol = protocol;
1da177e4
LT
2979 skb->dev = odev;
2980 skb->pkt_type = PACKET_HOST;
2981
7744b5f3
SD
2982 pktgen_finalize_skb(pkt_dev, skb, datalen);
2983
c26bf4a5
TG
2984 if (!(pkt_dev->flags & F_UDPCSUM)) {
2985 skb->ip_summed = CHECKSUM_NONE;
2986 } else if (odev->features & NETIF_F_V6_CSUM) {
2987 skb->ip_summed = CHECKSUM_PARTIAL;
2988 skb->csum_start = skb_transport_header(skb) - skb->head;
2989 skb->csum_offset = offsetof(struct udphdr, check);
2990 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2991 } else {
7744b5f3 2992 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0);
c26bf4a5
TG
2993
2994 /* add protocol-dependent pseudo-header */
2995 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2996
2997 if (udph->check == 0)
2998 udph->check = CSUM_MANGLED_0;
2999 }
3000
1da177e4
LT
3001 return skb;
3002}
3003
475ac1e4
SH
3004static struct sk_buff *fill_packet(struct net_device *odev,
3005 struct pktgen_dev *pkt_dev)
1da177e4 3006{
222f1806 3007 if (pkt_dev->flags & F_IPV6)
1da177e4
LT
3008 return fill_packet_ipv6(odev, pkt_dev);
3009 else
3010 return fill_packet_ipv4(odev, pkt_dev);
3011}
3012
222f1806 3013static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3014{
222f1806
LC
3015 pkt_dev->seq_num = 1;
3016 pkt_dev->idle_acc = 0;
1da177e4 3017 pkt_dev->sofar = 0;
222f1806
LC
3018 pkt_dev->tx_bytes = 0;
3019 pkt_dev->errors = 0;
1da177e4
LT
3020}
3021
3022/* Set up structure for sending pkts, clear counters */
3023
3024static void pktgen_run(struct pktgen_thread *t)
3025{
c26a8016 3026 struct pktgen_dev *pkt_dev;
1da177e4
LT
3027 int started = 0;
3028
f9467eae 3029 func_enter();
1da177e4 3030
8788370a
JDB
3031 rcu_read_lock();
3032 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
1da177e4
LT
3033
3034 /*
3035 * setup odev and create initial packet.
3036 */
3037 pktgen_setup_inject(pkt_dev);
3038
222f1806 3039 if (pkt_dev->odev) {
1da177e4 3040 pktgen_clear_counters(pkt_dev);
1da177e4 3041 pkt_dev->skb = NULL;
398f382c 3042 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 3043
16dab72f 3044 set_pkt_overhead(pkt_dev);
222f1806 3045
1da177e4 3046 strcpy(pkt_dev->result, "Starting");
8788370a 3047 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3048 started++;
222f1806 3049 } else
1da177e4
LT
3050 strcpy(pkt_dev->result, "Error starting");
3051 }
8788370a 3052 rcu_read_unlock();
222f1806
LC
3053 if (started)
3054 t->control &= ~(T_STOP);
1da177e4
LT
3055}
3056
4e58a027 3057static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 3058{
cdcdbe0b 3059 struct pktgen_thread *t;
1da177e4 3060
f9467eae 3061 func_enter();
1da177e4 3062
6146e6a4 3063 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3064
4e58a027 3065 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 3066 t->control |= T_STOP;
cdcdbe0b 3067
6146e6a4 3068 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT
3069}
3070
648fda74 3071static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3072{
648fda74 3073 const struct pktgen_dev *pkt_dev;
1da177e4 3074
8788370a
JDB
3075 rcu_read_lock();
3076 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
3077 if (pkt_dev->running) {
3078 rcu_read_unlock();
648fda74 3079 return 1;
8788370a
JDB
3080 }
3081 rcu_read_unlock();
648fda74 3082 return 0;
1da177e4
LT
3083}
3084
222f1806 3085static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3086{
222f1806 3087 while (thread_is_running(t)) {
1da177e4 3088
222f1806 3089 msleep_interruptible(100);
1da177e4 3090
222f1806
LC
3091 if (signal_pending(current))
3092 goto signal;
222f1806 3093 }
222f1806
LC
3094 return 1;
3095signal:
3096 return 0;
1da177e4
LT
3097}
3098
4e58a027 3099static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3100{
cdcdbe0b 3101 struct pktgen_thread *t;
1da177e4 3102 int sig = 1;
222f1806 3103
6146e6a4 3104 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3105
4e58a027 3106 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3107 sig = pktgen_wait_thread_run(t);
222f1806
LC
3108 if (sig == 0)
3109 break;
1da177e4 3110 }
cdcdbe0b
LC
3111
3112 if (sig == 0)
4e58a027 3113 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3114 t->control |= (T_STOP);
cdcdbe0b 3115
6146e6a4 3116 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT
3117 return sig;
3118}
3119
4e58a027 3120static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3121{
cdcdbe0b 3122 struct pktgen_thread *t;
1da177e4 3123
f9467eae 3124 func_enter();
1da177e4 3125
6146e6a4 3126 mutex_lock(&pktgen_thread_lock);
1da177e4 3127
4e58a027 3128 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3129 t->control |= (T_RUN);
cdcdbe0b 3130
6146e6a4 3131 mutex_unlock(&pktgen_thread_lock);
1da177e4 3132
63adc6fb
SH
3133 /* Propagate thread->control */
3134 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3135
4e58a027 3136 pktgen_wait_all_threads_run(pn);
1da177e4
LT
3137}
3138
4e58a027 3139static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB
3140{
3141 struct pktgen_thread *t;
3142
f9467eae 3143 func_enter();
eb37b41c
JB
3144
3145 mutex_lock(&pktgen_thread_lock);
3146
4e58a027 3147 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB
3148 t->control |= (T_REMDEVALL);
3149
3150 mutex_unlock(&pktgen_thread_lock);
3151
63adc6fb
SH
3152 /* Propagate thread->control */
3153 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3154
4e58a027 3155 pktgen_wait_all_threads_run(pn);
eb37b41c
JB
3156}
3157
1da177e4
LT
3158static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3159{
fd29cf72 3160 __u64 bps, mbps, pps;
222f1806 3161 char *p = pkt_dev->result;
fd29cf72
SH
3162 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3163 pkt_dev->started_at);
3164 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3165
03a14ab1 3166 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH
3167 (unsigned long long)ktime_to_us(elapsed),
3168 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3169 (unsigned long long)ktime_to_us(idle),
222f1806
LC
3170 (unsigned long long)pkt_dev->sofar,
3171 pkt_dev->cur_pkt_size, nr_frags);
3172
fd29cf72
SH
3173 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3174 ktime_to_ns(elapsed));
222f1806
LC
3175
3176 bps = pps * 8 * pkt_dev->cur_pkt_size;
3177
3178 mbps = bps;
3179 do_div(mbps, 1000000);
3180 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3181 (unsigned long long)pps,
3182 (unsigned long long)mbps,
3183 (unsigned long long)bps,
3184 (unsigned long long)pkt_dev->errors);
1da177e4 3185}
1da177e4
LT
3186
3187/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3188static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3189{
222f1806 3190 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3191
222f1806 3192 if (!pkt_dev->running) {
294a0b7f
JP
3193 pr_warn("interface: %s is already stopped\n",
3194 pkt_dev->odevname);
222f1806
LC
3195 return -EINVAL;
3196 }
1da177e4 3197
8788370a 3198 pkt_dev->running = 0;
3bda06a3
SH
3199 kfree_skb(pkt_dev->skb);
3200 pkt_dev->skb = NULL;
398f382c 3201 pkt_dev->stopped_at = ktime_get();
1da177e4 3202
95ed63f7 3203 show_results(pkt_dev, nr_frags);
1da177e4 3204
222f1806 3205 return 0;
1da177e4
LT
3206}
3207
222f1806 3208static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3209{
c26a8016 3210 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3211
8788370a
JDB
3212 rcu_read_lock();
3213 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3214 if (!pkt_dev->running)
222f1806
LC
3215 continue;
3216 if (best == NULL)
c26a8016 3217 best = pkt_dev;
398f382c 3218 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3219 best = pkt_dev;
1da177e4 3220 }
8788370a
JDB
3221 rcu_read_unlock();
3222
222f1806 3223 return best;
1da177e4
LT
3224}
3225
222f1806
LC
3226static void pktgen_stop(struct pktgen_thread *t)
3227{
c26a8016 3228 struct pktgen_dev *pkt_dev;
1da177e4 3229
f9467eae 3230 func_enter();
1da177e4 3231
8788370a 3232 rcu_read_lock();
1da177e4 3233
8788370a 3234 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3235 pktgen_stop_device(pkt_dev);
95ed63f7 3236 }
1da177e4 3237
8788370a 3238 rcu_read_unlock();
1da177e4
LT
3239}
3240
95ed63f7
AK
3241/*
3242 * one of our devices needs to be removed - find it
3243 * and remove it
3244 */
3245static void pktgen_rem_one_if(struct pktgen_thread *t)
3246{
c26a8016
LC
3247 struct list_head *q, *n;
3248 struct pktgen_dev *cur;
95ed63f7 3249
f9467eae 3250 func_enter();
95ed63f7 3251
c26a8016
LC
3252 list_for_each_safe(q, n, &t->if_list) {
3253 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3254
222f1806
LC
3255 if (!cur->removal_mark)
3256 continue;
95ed63f7 3257
86dc1ad2 3258 kfree_skb(cur->skb);
95ed63f7
AK
3259 cur->skb = NULL;
3260
3261 pktgen_remove_device(t, cur);
3262
3263 break;
3264 }
95ed63f7
AK
3265}
3266
222f1806 3267static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3268{
c26a8016
LC
3269 struct list_head *q, *n;
3270 struct pktgen_dev *cur;
222f1806 3271
f9467eae
JP
3272 func_enter();
3273
222f1806 3274 /* Remove all devices, free mem */
95ed63f7 3275
c26a8016
LC
3276 list_for_each_safe(q, n, &t->if_list) {
3277 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3278
86dc1ad2 3279 kfree_skb(cur->skb);
95ed63f7
AK
3280 cur->skb = NULL;
3281
1da177e4
LT
3282 pktgen_remove_device(t, cur);
3283 }
1da177e4
LT
3284}
3285
222f1806 3286static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3287{
222f1806 3288 /* Remove from the thread list */
4e58a027 3289 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT
3290}
3291
ef87979c 3292static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3293{
398f382c 3294 ktime_t idle_start = ktime_get();
ef87979c 3295 schedule();
398f382c 3296 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3297}
3791decb 3298
ef87979c
SH
3299static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3300{
398f382c 3301 ktime_t idle_start = ktime_get();
3791decb 3302
ef87979c
SH
3303 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3304 if (signal_pending(current))
3305 break;
3306
3307 if (need_resched())
3308 pktgen_resched(pkt_dev);
3309 else
3310 cpu_relax();
3311 }
398f382c 3312 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH
3313}
3314
475ac1e4 3315static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3316{
38b2cf29 3317 unsigned int burst = ACCESS_ONCE(pkt_dev->burst);
00829823 3318 struct net_device *odev = pkt_dev->odev;
fd2ea0a7 3319 struct netdev_queue *txq;
1da177e4
LT
3320 int ret;
3321
ef87979c
SH
3322 /* If device is offline, then don't send */
3323 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3324 pktgen_stop_device(pkt_dev);
3325 return;
fd2ea0a7
DM
3326 }
3327
ef87979c
SH
3328 /* This is max DELAY, this has special meaning of
3329 * "never transmit"
3330 */
3331 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3332 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3333 return;
1da177e4 3334 }
222f1806 3335
ef87979c 3336 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH
3337 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3338 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3339 /* build a new pkt */
3340 kfree_skb(pkt_dev->skb);
3341
3342 pkt_dev->skb = fill_packet(odev, pkt_dev);
3343 if (pkt_dev->skb == NULL) {
f9467eae 3344 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH
3345 schedule();
3346 pkt_dev->clone_count--; /* back out increment, OOM */
3347 return;
1da177e4 3348 }
baac8564 3349 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH
3350 pkt_dev->allocated_skbs++;
3351 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3352 }
95ed63f7 3353
ef87979c
SH
3354 if (pkt_dev->delay && pkt_dev->last_ok)
3355 spin(pkt_dev, pkt_dev->next_tx);
3356
10c51b56 3357 txq = skb_get_tx_queue(odev, pkt_dev->skb);
fd2ea0a7 3358
0f2eea4b
DB
3359 local_bh_disable();
3360
3361 HARD_TX_LOCK(odev, txq, smp_processor_id());
5b8db2f5 3362
6f25cd47 3363 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
ef87979c 3364 ret = NETDEV_TX_BUSY;
0835acfe
ED
3365 pkt_dev->last_ok = 0;
3366 goto unlock;
3367 }
38b2cf29
AS
3368 atomic_add(burst, &pkt_dev->skb->users);
3369
3370xmit_more:
3371 ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0);
ef87979c
SH
3372
3373 switch (ret) {
3374 case NETDEV_TX_OK:
ef87979c
SH
3375 pkt_dev->last_ok = 1;
3376 pkt_dev->sofar++;
3377 pkt_dev->seq_num++;
baac8564 3378 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
38b2cf29
AS
3379 if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq))
3380 goto xmit_more;
ef87979c 3381 break;
f466dba1
JF
3382 case NET_XMIT_DROP:
3383 case NET_XMIT_CN:
3384 case NET_XMIT_POLICED:
3385 /* skb has been consumed */
3386 pkt_dev->errors++;
3387 break;
ef87979c 3388 default: /* Drivers are not supposed to return other values! */
e87cc472
JP
3389 net_info_ratelimited("%s xmit error: %d\n",
3390 pkt_dev->odevname, ret);
ef87979c
SH
3391 pkt_dev->errors++;
3392 /* fallthru */
3393 case NETDEV_TX_LOCKED:
3394 case NETDEV_TX_BUSY:
3395 /* Retry it next time */
3396 atomic_dec(&(pkt_dev->skb->users));
3397 pkt_dev->last_ok = 0;
222f1806 3398 }
38b2cf29
AS
3399 if (unlikely(burst))
3400 atomic_sub(burst, &pkt_dev->skb->users);
0835acfe 3401unlock:
0f2eea4b
DB
3402 HARD_TX_UNLOCK(odev, txq);
3403
3404 local_bh_enable();
222f1806 3405
1da177e4
LT
3406 /* If pkt_dev->count is zero, then run forever */
3407 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3408 pktgen_wait_for_skb(pkt_dev);
222f1806 3409
1da177e4
LT
3410 /* Done with this */
3411 pktgen_stop_device(pkt_dev);
222f1806 3412 }
222f1806 3413}
1da177e4 3414
4ec93edb 3415/*
1da177e4
LT
3416 * Main loop of the thread goes here
3417 */
3418
ee74baa7 3419static int pktgen_thread_worker(void *arg)
1da177e4
LT
3420{
3421 DEFINE_WAIT(wait);
ee74baa7 3422 struct pktgen_thread *t = arg;
222f1806 3423 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3424 int cpu = t->cpu;
1da177e4 3425
ee74baa7 3426 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT
3427
3428 init_waitqueue_head(&t->queue);
d3ede327 3429 complete(&t->start_done);
1da177e4 3430
f9467eae 3431 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3432
83144186
RW
3433 set_freezable();
3434
baac167b
JDB
3435 __set_current_state(TASK_RUNNING);
3436
ee74baa7
DM
3437 while (!kthread_should_stop()) {
3438 pkt_dev = next_to_run(t);
1da177e4 3439
ef87979c 3440 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3441 if (t->net->pktgen_exiting)
551eaff1 3442 break;
ef87979c
SH
3443 wait_event_interruptible_timeout(t->queue,
3444 t->control != 0,
3445 HZ/10);
1b3f720b 3446 try_to_freeze();
ef87979c 3447 continue;
ee74baa7 3448 }
1da177e4 3449
ef87979c 3450 if (likely(pkt_dev)) {
1da177e4
LT
3451 pktgen_xmit(pkt_dev);
3452
ef87979c
SH
3453 if (need_resched())
3454 pktgen_resched(pkt_dev);
3455 else
3456 cpu_relax();
3457 }
3458
222f1806 3459 if (t->control & T_STOP) {
1da177e4
LT
3460 pktgen_stop(t);
3461 t->control &= ~(T_STOP);
3462 }
3463
222f1806 3464 if (t->control & T_RUN) {
1da177e4
LT
3465 pktgen_run(t);
3466 t->control &= ~(T_RUN);
3467 }
3468
222f1806 3469 if (t->control & T_REMDEVALL) {
1da177e4 3470 pktgen_rem_all_ifs(t);
95ed63f7
AK
3471 t->control &= ~(T_REMDEVALL);
3472 }
3473
222f1806 3474 if (t->control & T_REMDEV) {
95ed63f7 3475 pktgen_rem_one_if(t);
1da177e4
LT
3476 t->control &= ~(T_REMDEV);
3477 }
3478
09fe3ef4 3479 try_to_freeze();
222f1806 3480 }
baac167b 3481 set_current_state(TASK_INTERRUPTIBLE);
1da177e4 3482
f9467eae 3483 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3484 pktgen_stop(t);
1da177e4 3485
f9467eae 3486 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3487 pktgen_rem_all_ifs(t);
1da177e4 3488
f9467eae 3489 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3490 pktgen_rem_thread(t);
cdcdbe0b 3491
551eaff1
ED
3492 /* Wait for kthread_stop */
3493 while (!kthread_should_stop()) {
3494 set_current_state(TASK_INTERRUPTIBLE);
3495 schedule();
3496 }
3497 __set_current_state(TASK_RUNNING);
3498
ee74baa7 3499 return 0;
1da177e4
LT
3500}
3501
222f1806 3502static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3503 const char *ifname, bool exact)
1da177e4 3504{
c26a8016 3505 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3506 size_t len = strlen(ifname);
222f1806 3507
8788370a
JDB
3508 rcu_read_lock();
3509 list_for_each_entry_rcu(p, &t->if_list, list)
3e984840
ED
3510 if (strncmp(p->odevname, ifname, len) == 0) {
3511 if (p->odevname[len]) {
3512 if (exact || p->odevname[len] != '@')
3513 continue;
3514 }
c26a8016 3515 pkt_dev = p;
222f1806
LC
3516 break;
3517 }
222f1806 3518
8788370a 3519 rcu_read_unlock();
f9467eae 3520 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3521 return pkt_dev;
1da177e4
LT
3522}
3523
4ec93edb
YH
3524/*
3525 * Adds a dev at front of if_list.
1da177e4
LT
3526 */
3527
222f1806
LC
3528static int add_dev_to_thread(struct pktgen_thread *t,
3529 struct pktgen_dev *pkt_dev)
1da177e4
LT
3530{
3531 int rv = 0;
222f1806 3532
8788370a
JDB
3533 /* This function cannot be called concurrently, as its called
3534 * under pktgen_thread_lock mutex, but it can run from
3535 * userspace on another CPU than the kthread. The if_lock()
3536 * is used here to sync with concurrent instances of
3537 * _rem_dev_from_if_list() invoked via kthread, which is also
3538 * updating the if_list */
222f1806
LC
3539 if_lock(t);
3540
3541 if (pkt_dev->pg_thread) {
f9467eae 3542 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC
3543 rv = -EBUSY;
3544 goto out;
3545 }
c26a8016 3546
1da177e4 3547 pkt_dev->running = 0;
8788370a
JDB
3548 pkt_dev->pg_thread = t;
3549 list_add_rcu(&pkt_dev->list, &t->if_list);
1da177e4 3550
222f1806
LC
3551out:
3552 if_unlock(t);
3553 return rv;
1da177e4
LT
3554}
3555
3556/* Called under thread lock */
3557
222f1806 3558static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3559{
222f1806 3560 struct pktgen_dev *pkt_dev;
39df232f 3561 int err;
3291b9db 3562 int node = cpu_to_node(t->cpu);
222f1806 3563
1da177e4
LT
3564 /* We don't allow a device to be on several threads */
3565
4e58a027 3566 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3567 if (pkt_dev) {
f9467eae 3568 pr_err("ERROR: interface already used\n");
222f1806
LC
3569 return -EBUSY;
3570 }
d50a6b56 3571
3291b9db 3572 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH
3573 if (!pkt_dev)
3574 return -ENOMEM;
3575
593f63b0 3576 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3577 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3578 node);
d50a6b56
SH
3579 if (pkt_dev->flows == NULL) {
3580 kfree(pkt_dev);
3581 return -ENOMEM;
3582 }
d50a6b56 3583
95ed63f7 3584 pkt_dev->removal_mark = 0;
d50a6b56 3585 pkt_dev->nfrags = 0;
fd29cf72 3586 pkt_dev->delay = pg_delay_d;
d50a6b56
SH
3587 pkt_dev->count = pg_count_d;
3588 pkt_dev->sofar = 0;
222f1806 3589 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH
3590 pkt_dev->udp_src_max = 9;
3591 pkt_dev->udp_dst_min = 9;
3592 pkt_dev->udp_dst_max = 9;
34954ddc
FF
3593 pkt_dev->vlan_p = 0;
3594 pkt_dev->vlan_cfi = 0;
3595 pkt_dev->vlan_id = 0xffff;
3596 pkt_dev->svlan_p = 0;
3597 pkt_dev->svlan_cfi = 0;
3598 pkt_dev->svlan_id = 0xffff;
38b2cf29 3599 pkt_dev->burst = 1;
e99b99b4 3600 pkt_dev->node = -1;
34954ddc 3601
4e58a027 3602 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH
3603 if (err)
3604 goto out1;
d8873315
NH
3605 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3606 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3607
4e58a027 3608 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3609 &pktgen_if_fops, pkt_dev);
39df232f 3610 if (!pkt_dev->entry) {
f9467eae 3611 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3612 PG_PROC_DIR, ifname);
39df232f
SH
3613 err = -EINVAL;
3614 goto out2;
d50a6b56 3615 }
a553e4a6
JHS
3616#ifdef CONFIG_XFRM
3617 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3618 pkt_dev->ipsproto = IPPROTO_ESP;
cf93d47e
FD
3619
3620 /* xfrm tunnel mode needs additional dst to extract outter
3621 * ip header protocol/ttl/id field, here creat a phony one.
3622 * instead of looking for a valid rt, which definitely hurting
3623 * performance under such circumstance.
3624 */
3625 pkt_dev->dstops.family = AF_INET;
3626 pkt_dev->dst.dev = pkt_dev->odev;
3627 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3628 pkt_dev->dst.child = &pkt_dev->dst;
3629 pkt_dev->dst.ops = &pkt_dev->dstops;
a553e4a6 3630#endif
d50a6b56
SH
3631
3632 return add_dev_to_thread(t, pkt_dev);
39df232f
SH
3633out2:
3634 dev_put(pkt_dev->odev);
3635out1:
a553e4a6
JHS
3636#ifdef CONFIG_XFRM
3637 free_SAs(pkt_dev);
3638#endif
1d0ebfe7 3639 vfree(pkt_dev->flows);
39df232f
SH
3640 kfree(pkt_dev);
3641 return err;
1da177e4
LT
3642}
3643
4e58a027 3644static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3645{
cdcdbe0b 3646 struct pktgen_thread *t;
d50a6b56 3647 struct proc_dir_entry *pe;
ee74baa7 3648 struct task_struct *p;
222f1806 3649
3291b9db
ED
3650 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3651 cpu_to_node(cpu));
222f1806 3652 if (!t) {
f9467eae 3653 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC
3654 return -ENOMEM;
3655 }
3656
222f1806 3657 spin_lock_init(&t->if_lock);
1da177e4 3658 t->cpu = cpu;
222f1806 3659
ee74baa7
DM
3660 INIT_LIST_HEAD(&t->if_list);
3661
4e58a027 3662 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3663 init_completion(&t->start_done);
ee74baa7 3664
94dcf29a
ED
3665 p = kthread_create_on_node(pktgen_thread_worker,
3666 t,
3667 cpu_to_node(cpu),
3668 "kpktgend_%d", cpu);
ee74baa7 3669 if (IS_ERR(p)) {
f9467eae 3670 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM
3671 list_del(&t->th_list);
3672 kfree(t);
3673 return PTR_ERR(p);
3674 }
3675 kthread_bind(p, cpu);
3676 t->tsk = p;
3677
4e58a027 3678 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3679 &pktgen_thread_fops, t);
222f1806 3680 if (!pe) {
f9467eae 3681 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM
3682 PG_PROC_DIR, t->tsk->comm);
3683 kthread_stop(p);
3684 list_del(&t->th_list);
222f1806
LC
3685 kfree(t);
3686 return -EINVAL;
3687 }
d50a6b56 3688
4e58a027 3689 t->net = pn;
ee74baa7 3690 wake_up_process(p);
d3ede327 3691 wait_for_completion(&t->start_done);
1da177e4
LT
3692
3693 return 0;
3694}
3695
4ec93edb
YH
3696/*
3697 * Removes a device from the thread if_list.
1da177e4 3698 */
222f1806
LC
3699static void _rem_dev_from_if_list(struct pktgen_thread *t,
3700 struct pktgen_dev *pkt_dev)
1da177e4 3701{
c26a8016
LC
3702 struct list_head *q, *n;
3703 struct pktgen_dev *p;
1da177e4 3704
8788370a 3705 if_lock(t);
c26a8016
LC
3706 list_for_each_safe(q, n, &t->if_list) {
3707 p = list_entry(q, struct pktgen_dev, list);
3708 if (p == pkt_dev)
8788370a 3709 list_del_rcu(&p->list);
1da177e4 3710 }
8788370a 3711 if_unlock(t);
1da177e4
LT
3712}
3713
222f1806
LC
3714static int pktgen_remove_device(struct pktgen_thread *t,
3715 struct pktgen_dev *pkt_dev)
1da177e4 3716{
f9467eae 3717 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3718
222f1806 3719 if (pkt_dev->running) {
294a0b7f 3720 pr_warn("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC
3721 pktgen_stop_device(pkt_dev);
3722 }
3723
3724 /* Dis-associate from the interface */
1da177e4
LT
3725
3726 if (pkt_dev->odev) {
3727 dev_put(pkt_dev->odev);
222f1806
LC
3728 pkt_dev->odev = NULL;
3729 }
3730
8788370a
JDB
3731 /* Remove proc before if_list entry, because add_device uses
3732 * list to determine if interface already exist, avoid race
3733 * with proc_create_data() */
ef87c5d6 3734 proc_remove(pkt_dev->entry);
1da177e4 3735
8788370a
JDB
3736 /* And update the thread if_list */
3737 _rem_dev_from_if_list(t, pkt_dev);
3738
a553e4a6
JHS
3739#ifdef CONFIG_XFRM
3740 free_SAs(pkt_dev);
3741#endif
1d0ebfe7 3742 vfree(pkt_dev->flows);
26ad7879
ED
3743 if (pkt_dev->page)
3744 put_page(pkt_dev->page);
8788370a 3745 kfree_rcu(pkt_dev, rcu);
222f1806 3746 return 0;
1da177e4
LT
3747}
3748
4e58a027 3749static int __net_init pg_net_init(struct net *net)
1da177e4 3750{
4e58a027 3751 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3752 struct proc_dir_entry *pe;
4e58a027
CW
3753 int cpu, ret = 0;
3754
3755 pn->net = net;
3756 INIT_LIST_HEAD(&pn->pktgen_threads);
3757 pn->pktgen_exiting = false;
3758 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3759 if (!pn->proc_dir) {
3760 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3761 return -ENODEV;
4e58a027
CW
3762 }
3763 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3764 if (pe == NULL) {
4e58a027 3765 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3766 ret = -EINVAL;
4e58a027 3767 goto remove;
222f1806 3768 }
1da177e4 3769
670c02c2 3770 for_each_online_cpu(cpu) {
8024bb24 3771 int err;
1da177e4 3772
4e58a027 3773 err = pktgen_create_thread(cpu, pn);
8024bb24 3774 if (err)
4e58a027 3775 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3776 cpu, err);
222f1806 3777 }
8024bb24 3778
4e58a027
CW
3779 if (list_empty(&pn->pktgen_threads)) {
3780 pr_err("Initialization failed for all threads\n");
ce14f894 3781 ret = -ENODEV;
4e58a027 3782 goto remove_entry;
8024bb24
LC
3783 }
3784
222f1806 3785 return 0;
ce14f894 3786
4e58a027
CW
3787remove_entry:
3788 remove_proc_entry(PGCTRL, pn->proc_dir);
3789remove:
ece31ffd 3790 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3791 return ret;
1da177e4
LT
3792}
3793
4e58a027 3794static void __net_exit pg_net_exit(struct net *net)
1da177e4 3795{
4e58a027 3796 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC
3797 struct pktgen_thread *t;
3798 struct list_head *q, *n;
d4b11335 3799 LIST_HEAD(list);
1da177e4 3800
222f1806 3801 /* Stop all interfaces & threads */
4e58a027 3802 pn->pktgen_exiting = true;
1da177e4 3803
c57b5468 3804 mutex_lock(&pktgen_thread_lock);
4e58a027 3805 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED
3806 mutex_unlock(&pktgen_thread_lock);
3807
3808 list_for_each_safe(q, n, &list) {
cdcdbe0b 3809 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3810 list_del(&t->th_list);
ee74baa7
DM
3811 kthread_stop(t->tsk);
3812 kfree(t);
222f1806 3813 }
1da177e4 3814
4e58a027 3815 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3816 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW
3817}
3818
3819static struct pernet_operations pg_net_ops = {
3820 .init = pg_net_init,
3821 .exit = pg_net_exit,
3822 .id = &pg_net_id,
3823 .size = sizeof(struct pktgen_net),
3824};
3825
3826static int __init pg_init(void)
3827{
3828 int ret = 0;
1da177e4 3829
4e58a027
CW
3830 pr_info("%s", version);
3831 ret = register_pernet_subsys(&pg_net_ops);
3832 if (ret)
3833 return ret;
3834 ret = register_netdevice_notifier(&pktgen_notifier_block);
3835 if (ret)
3836 unregister_pernet_subsys(&pg_net_ops);
3837
3838 return ret;
3839}
3840
3841static void __exit pg_cleanup(void)
3842{
3843 unregister_netdevice_notifier(&pktgen_notifier_block);
3844 unregister_pernet_subsys(&pg_net_ops);
8788370a 3845 /* Don't need rcu_barrier() due to use of kfree_rcu() */
1da177e4
LT
3846}
3847
1da177e4
LT
3848module_init(pg_init);
3849module_exit(pg_cleanup);
3850
c3d2f52d 3851MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT
3852MODULE_DESCRIPTION("Packet Generator tool");
3853MODULE_LICENSE("GPL");
c3d2f52d 3854MODULE_VERSION(VERSION);
1da177e4 3855module_param(pg_count_d, int, 0);
c3d2f52d 3856MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3857module_param(pg_delay_d, int, 0);
c3d2f52d 3858MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3859module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3860MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3861module_param(debug, int, 0);
c3d2f52d 3862MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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