cregit-Linux how code gets into the kernel

Release 4.11 net/core/pktgen.c

Directory: net/core
/*
 * Authors:
 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
 *                             Uppsala University and
 *                             Swedish University of Agricultural Sciences
 *
 * Alexey Kuznetsov  <kuznet@ms2.inr.ac.ru>
 * Ben Greear <greearb@candelatech.com>
 * Jens Låås <jens.laas@data.slu.se>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 *
 * A tool for loading the network with preconfigurated packets.
 * The tool is implemented as a linux module.  Parameters are output
 * device, delay (to hard_xmit), number of packets, and whether
 * to use multiple SKBs or just the same one.
 * pktgen uses the installed interface's output routine.
 *
 * Additional hacking by:
 *
 * Jens.Laas@data.slu.se
 * Improved by ANK. 010120.
 * Improved by ANK even more. 010212.
 * MAC address typo fixed. 010417 --ro
 * Integrated.  020301 --DaveM
 * Added multiskb option 020301 --DaveM
 * Scaling of results. 020417--sigurdur@linpro.no
 * Significant re-work of the module:
 *   *  Convert to threaded model to more efficiently be able to transmit
 *       and receive on multiple interfaces at once.
 *   *  Converted many counters to __u64 to allow longer runs.
 *   *  Allow configuration of ranges, like min/max IP address, MACs,
 *       and UDP-ports, for both source and destination, and can
 *       set to use a random distribution or sequentially walk the range.
 *   *  Can now change most values after starting.
 *   *  Place 12-byte packet in UDP payload with magic number,
 *       sequence number, and timestamp.
 *   *  Add receiver code that detects dropped pkts, re-ordered pkts, and
 *       latencies (with micro-second) precision.
 *   *  Add IOCTL interface to easily get counters & configuration.
 *   --Ben Greear <greearb@candelatech.com>
 *
 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
 * as a "fastpath" with a configurable number of clones after alloc's.
 * clone_skb=0 means all packets are allocated this also means ranges time
 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
 * clones.
 *
 * Also moved to /proc/net/pktgen/
 * --ro
 *
 * Sept 10:  Fixed threading/locking.  Lots of bone-headed and more clever
 *    mistakes.  Also merged in DaveM's patch in the -pre6 patch.
 * --Ben Greear <greearb@candelatech.com>
 *
 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
 *
 *
 * 021124 Finished major redesign and rewrite for new functionality.
 * See Documentation/networking/pktgen.txt for how to use this.
 *
 * The new operation:
 * For each CPU one thread/process is created at start. This process checks
 * for running devices in the if_list and sends packets until count is 0 it
 * also the thread checks the thread->control which is used for inter-process
 * communication. controlling process "posts" operations to the threads this
 * way.
 * The if_list is RCU protected, and the if_lock remains to protect updating
 * of if_list, from "add_device" as it invoked from userspace (via proc write).
 *
 * By design there should only be *one* "controlling" process. In practice
 * multiple write accesses gives unpredictable result. Understood by "write"
 * to /proc gives result code thats should be read be the "writer".
 * For practical use this should be no problem.
 *
 * Note when adding devices to a specific CPU there good idea to also assign
 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
 * --ro
 *
 * Fix refcount off by one if first packet fails, potential null deref,
 * memleak 030710- KJP
 *
 * First "ranges" functionality for ipv6 030726 --ro
 *
 * Included flow support. 030802 ANK.
 *
 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
 *
 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
 * ia64 compilation fix from  Aron Griffis <aron@hp.com> 040604
 *
 * New xmit() return, do_div and misc clean up by Stephen Hemminger
 * <shemminger@osdl.org> 040923
 *
 * Randy Dunlap fixed u64 printk compiler warning
 *
 * Remove FCS from BW calculation.  Lennert Buytenhek <buytenh@wantstofly.org>
 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
 *
 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
 *
 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
 * 050103
 *
 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
 *
 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
 *
 * Fixed src_mac command to set source mac of packet to value specified in
 * command by Adit Ranadive <adit.262@gmail.com>
 *
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/sys.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/unistd.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/capability.h>
#include <linux/hrtimer.h>
#include <linux/freezer.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/inet.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
#include <linux/if_arp.h>
#include <linux/if_vlan.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/udp.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/wait.h>
#include <linux/etherdevice.h>
#include <linux/kthread.h>
#include <linux/prefetch.h>
#include <net/net_namespace.h>
#include <net/checksum.h>
#include <net/ipv6.h>
#include <net/udp.h>
#include <net/ip6_checksum.h>
#include <net/addrconf.h>
#ifdef CONFIG_XFRM
#include <net/xfrm.h>
#endif
#include <net/netns/generic.h>
#include <asm/byteorder.h>
#include <linux/rcupdate.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/timex.h>
#include <linux/uaccess.h>
#include <asm/dma.h>
#include <asm/div64.h>		/* do_div */


#define VERSION	"2.75"

#define IP_NAME_SZ 32

#define MAX_MPLS_LABELS 16 
/* This is the max label stack depth */

#define MPLS_STACK_BOTTOM htonl(0x00000100)


#define func_enter() pr_debug("entering %s\n", __func__);

/* Device flag bits */

#define F_IPSRC_RND   (1<<0)	
/* IP-Src Random  */

#define F_IPDST_RND   (1<<1)	
/* IP-Dst Random  */

#define F_UDPSRC_RND  (1<<2)	
/* UDP-Src Random */

#define F_UDPDST_RND  (1<<3)	
/* UDP-Dst Random */

#define F_MACSRC_RND  (1<<4)	
/* MAC-Src Random */

#define F_MACDST_RND  (1<<5)	
/* MAC-Dst Random */

#define F_TXSIZE_RND  (1<<6)	
/* Transmit size is random */

#define F_IPV6        (1<<7)	
/* Interface in IPV6 Mode */

#define F_MPLS_RND    (1<<8)	
/* Random MPLS labels */

#define F_VID_RND     (1<<9)	
/* Random VLAN ID */

#define F_SVID_RND    (1<<10)	
/* Random SVLAN ID */

#define F_FLOW_SEQ    (1<<11)	
/* Sequential flows */

#define F_IPSEC_ON    (1<<12)	
/* ipsec on for flows */

#define F_QUEUE_MAP_RND (1<<13)	
/* queue map Random */

#define F_QUEUE_MAP_CPU (1<<14)	
/* queue map mirrors smp_processor_id() */

#define F_NODE          (1<<15)	
/* Node memory alloc*/

#define F_UDPCSUM       (1<<16)	
/* Include UDP checksum */

#define F_NO_TIMESTAMP  (1<<17)	
/* Don't timestamp packets (default TS) */

/* Thread control flag bits */

#define T_STOP        (1<<0)	
/* Stop run */

#define T_RUN         (1<<1)	
/* Start run */

#define T_REMDEVALL   (1<<2)	
/* Remove all devs */

#define T_REMDEV      (1<<3)	
/* Remove one dev */

/* Xmit modes */

#define M_START_XMIT		0	
/* Default normal TX */

#define M_NETIF_RECEIVE 	1	
/* Inject packets into stack */

#define M_QUEUE_XMIT		2	
/* Inject packet into qdisc */

/* If lock -- protects updating of if_list */

#define   if_lock(t)           mutex_lock(&(t->if_lock));

#define   if_unlock(t)           mutex_unlock(&(t->if_lock));

/* Used to help with determining the pkts on receive */

#define PKTGEN_MAGIC 0xbe9be955

#define PG_PROC_DIR "pktgen"

#define PGCTRL	    "pgctrl"


#define MAX_CFLOWS  65536


#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)

#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)


struct flow_state {
	
__be32 cur_daddr;
	
int count;
#ifdef CONFIG_XFRM
	
struct xfrm_state *x;
#endif
	
__u32 flags;
};

/* flow flag bits */

#define F_INIT   (1<<0)		
/* flow has been initialized */


struct pktgen_dev {
	/*
         * Try to keep frequent/infrequent used vars. separated.
         */
	
struct proc_dir_entry *entry;	/* proc file */
	
struct pktgen_thread *pg_thread;/* the owner */
	
struct list_head list;		/* chaining in the thread's run-queue */
	
struct rcu_head	 rcu;		/* freed by RCU */

	
int running;		/* if false, the test will stop */

	/* If min != max, then we will either do a linear iteration, or
         * we will do a random selection from within the range.
         */
	
__u32 flags;
	
int xmit_mode;
	
int min_pkt_size;
	
int max_pkt_size;
	
int pkt_overhead;	/* overhead for MPLS, VLANs, IPSEC etc */
	
int nfrags;
	
int removal_mark;	/* non-zero => the device is marked for
                                 * removal by worker thread */

	
struct page *page;
	
u64 delay;		/* nano-seconds */

	
__u64 count;		/* Default No packets to send */
	
__u64 sofar;		/* How many pkts we've sent so far */
	
__u64 tx_bytes;		/* How many bytes we've transmitted */
	
__u64 errors;		/* Errors when trying to transmit, */

	/* runtime counters relating to clone_skb */

	
__u32 clone_count;
	
int last_ok;		/* Was last skb sent?
                                 * Or a failed transmit of some sort?
                                 * This will keep sequence numbers in order
                                 */
	
ktime_t next_tx;
	
ktime_t started_at;
	
ktime_t stopped_at;
	
u64	idle_acc;	/* nano-seconds */

	
__u32 seq_num;

	
int clone_skb;		/*
                                 * Use multiple SKBs during packet gen.
                                 * If this number is greater than 1, then
                                 * that many copies of the same packet will be
                                 * sent before a new packet is allocated.
                                 * If you want to send 1024 identical packets
                                 * before creating a new packet,
                                 * set clone_skb to 1024.
                                 */

	
char dst_min[IP_NAME_SZ];	/* IP, ie 1.2.3.4 */
	
char dst_max[IP_NAME_SZ];	/* IP, ie 1.2.3.4 */
	
char src_min[IP_NAME_SZ];	/* IP, ie 1.2.3.4 */
	
char src_max[IP_NAME_SZ];	/* IP, ie 1.2.3.4 */

	
struct in6_addr in6_saddr;
	
struct in6_addr in6_daddr;
	
struct in6_addr cur_in6_daddr;
	
struct in6_addr cur_in6_saddr;
	/* For ranges */
	
struct in6_addr min_in6_daddr;
	
struct in6_addr max_in6_daddr;
	
struct in6_addr min_in6_saddr;
	
struct in6_addr max_in6_saddr;

	/* If we're doing ranges, random or incremental, then this
         * defines the min/max for those ranges.
         */
	
__be32 saddr_min;	/* inclusive, source IP address */
	
__be32 saddr_max;	/* exclusive, source IP address */
	
__be32 daddr_min;	/* inclusive, dest IP address */
	
__be32 daddr_max;	/* exclusive, dest IP address */

	
__u16 udp_src_min;	/* inclusive, source UDP port */
	
__u16 udp_src_max;	/* exclusive, source UDP port */
	
__u16 udp_dst_min;	/* inclusive, dest UDP port */
	
__u16 udp_dst_max;	/* exclusive, dest UDP port */

	/* DSCP + ECN */
	
__u8 tos;            /* six MSB of (former) IPv4 TOS
                                are for dscp codepoint */
	
__u8 traffic_class;  /* ditto for the (former) Traffic Class in IPv6
                                (see RFC 3260, sec. 4) */

	/* MPLS */
	
unsigned int nr_labels;	/* Depth of stack, 0 = no MPLS */
	
__be32 labels[MAX_MPLS_LABELS];

	/* VLAN/SVLAN (802.1Q/Q-in-Q) */
	
__u8  vlan_p;
	
__u8  vlan_cfi;
	
__u16 vlan_id;  /* 0xffff means no vlan tag */

	
__u8  svlan_p;
	
__u8  svlan_cfi;
	
__u16 svlan_id; /* 0xffff means no svlan tag */

	
__u32 src_mac_count;	/* How many MACs to iterate through */
	
__u32 dst_mac_count;	/* How many MACs to iterate through */

	
unsigned char dst_mac[ETH_ALEN];
	
unsigned char src_mac[ETH_ALEN];

	
__u32 cur_dst_mac_offset;
	
__u32 cur_src_mac_offset;
	
__be32 cur_saddr;
	
__be32 cur_daddr;
	
__u16 ip_id;
	
__u16 cur_udp_dst;
	
__u16 cur_udp_src;
	
__u16 cur_queue_map;
	
__u32 cur_pkt_size;
	
__u32 last_pkt_size;

	
__u8 hh[14];
	/* = {
           0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,

           We fill in SRC address later
           0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
           0x08, 0x00
           };
         */
	
__u16 pad;		/* pad out the hh struct to an even 16 bytes */

	
struct sk_buff *skb;	/* skb we are to transmit next, used for when we
                                 * are transmitting the same one multiple times
                                 */
	
struct net_device *odev; /* The out-going device.
                                  * Note that the device should have it's
                                  * pg_info pointer pointing back to this
                                  * device.
                                  * Set when the user specifies the out-going
                                  * device name (not when the inject is
                                  * started as it used to do.)
                                  */
	
char odevname[32];
	
struct flow_state *flows;
	
unsigned int cflows;	/* Concurrent flows (config) */
	
unsigned int lflow;		/* Flow length  (config) */
	
unsigned int nflows;	/* accumulated flows (stats) */
	
unsigned int curfl;		/* current sequenced flow (state)*/

	
u16 queue_map_min;
	
u16 queue_map_max;
	
__u32 skb_priority;	/* skb priority field */
	
unsigned int burst;	/* number of duplicated packets to burst */
	
int node;               /* Memory node */

#ifdef CONFIG_XFRM
	
__u8	ipsmode;		/* IPSEC mode (config) */
	
__u8	ipsproto;		/* IPSEC type (config) */
	
__u32	spi;
	
struct dst_entry dst;
	
struct dst_ops dstops;
#endif
	
char result[512];
};


struct pktgen_hdr {
	
__be32 pgh_magic;
	
__be32 seq_num;
	
__be32 tv_sec;
	
__be32 tv_usec;
};



static unsigned int pg_net_id __read_mostly;


struct pktgen_net {
	
struct net		*net;
	
struct proc_dir_entry	*proc_dir;
	
struct list_head	pktgen_threads;
	
bool			pktgen_exiting;
};


struct pktgen_thread {
	
struct mutex if_lock;		/* for list of devices */
	
struct list_head if_list;	/* All device here */
	
struct list_head th_list;
	
struct task_struct *tsk;
	
char result[512];

	/* Field for thread to receive "posted" events terminate,
           stop ifs etc. */

	
u32 control;
	
int cpu;

	
wait_queue_head_t queue;
	
struct completion start_done;
	
struct pktgen_net *net;
};


#define REMOVE 1

#define FIND   0


static const char version[] =
	"Packet Generator for packet performance testing. "
	"Version: " VERSION "\n";

static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
					  const char *ifname, bool exact);
static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
static void pktgen_run_all_threads(struct pktgen_net *pn);
static void pktgen_reset_all_threads(struct pktgen_net *pn);
static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);

static void pktgen_stop(struct pktgen_thread *t);
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);

/* Module parameters, defaults. */

static int pg_count_d __read_mostly = 1000;

static int pg_delay_d __read_mostly;

static int pg_clone_skb_d  __read_mostly;

static int debug  __read_mostly;

static DEFINE_MUTEX(pktgen_thread_lock);


static struct notifier_block pktgen_notifier_block = {
	.notifier_call = pktgen_device_event,
};

/*
 * /proc handling functions
 *
 */


static int pgctrl_show(struct seq_file *seq, void *v) { seq_puts(seq, version); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson1456.00%133.33%
Stephen Hemminger1144.00%266.67%
Total25100.00%3100.00%


static ssize_t pgctrl_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { char data[128]; struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); if (!capable(CAP_NET_ADMIN)) return -EPERM; if (count == 0) return -EINVAL; if (count > sizeof(data)) count = sizeof(data); if (copy_from_user(data, buf, count)) return -EFAULT; data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ if (!strcmp(data, "stop")) pktgen_stop_all_threads_ifs(pn); else if (!strcmp(data, "start")) pktgen_run_all_threads(pn); else if (!strcmp(data, "reset")) pktgen_reset_all_threads(pn); else return -EINVAL; return count; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson8853.66%112.50%
Américo Wang2515.24%112.50%
Stephen Hemminger1710.37%112.50%
Mathias Krause169.76%225.00%
Jesse Brandeburg137.93%112.50%
Jesper Dangaard Brouer42.44%112.50%
Al Viro10.61%112.50%
Total164100.00%8100.00%


static int pgctrl_open(struct inode *inode, struct file *file) { return single_open(file, pgctrl_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger2275.86%133.33%
Robert Olsson620.69%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations pktgen_fops = { .owner = THIS_MODULE, .open = pgctrl_open, .read = seq_read, .llseek = seq_lseek, .write = pgctrl_write, .release = single_release, };
static int pktgen_if_show(struct seq_file *seq, void *v) { const struct pktgen_dev *pkt_dev = seq->private; ktime_t stopped; u64 idle; seq_printf(seq, "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, pkt_dev->max_pkt_size); seq_printf(seq, " frags: %d delay: %llu clone_skb: %d ifname: %s\n", pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, pkt_dev->clone_skb, pkt_dev->odevname); seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, pkt_dev->lflow); seq_printf(seq, " queue_map_min: %u queue_map_max: %u\n", pkt_dev->queue_map_min, pkt_dev->queue_map_max); if (pkt_dev->skb_priority) seq_printf(seq, " skb_priority: %u\n", pkt_dev->skb_priority); if (pkt_dev->flags & F_IPV6) { seq_printf(seq, " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", &pkt_dev->in6_saddr, &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, &pkt_dev->in6_daddr, &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); } else { seq_printf(seq, " dst_min: %s dst_max: %s\n", pkt_dev->dst_min, pkt_dev->dst_max); seq_printf(seq, " src_min: %s src_max: %s\n", pkt_dev->src_min, pkt_dev->src_max); } seq_puts(seq, " src_mac: "); seq_printf(seq, "%pM ", is_zero_ether_addr(pkt_dev->src_mac) ? pkt_dev->odev->dev_addr : pkt_dev->src_mac); seq_puts(seq, "dst_mac: "); seq_printf(seq, "%pM\n", pkt_dev->dst_mac); seq_printf(seq, " udp_src_min: %d udp_src_max: %d" " udp_dst_min: %d udp_dst_max: %d\n", pkt_dev->udp_src_min, pkt_dev->udp_src_max, pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); seq_printf(seq, " src_mac_count: %d dst_mac_count: %d\n", pkt_dev->src_mac_count, pkt_dev->dst_mac_count); if (pkt_dev->nr_labels) { unsigned int i; seq_puts(seq, " mpls: "); for (i = 0; i < pkt_dev->nr_labels; i++) seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), i == pkt_dev->nr_labels-1 ? "\n" : ", "); } if (pkt_dev->vlan_id != 0xffff) seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi); if (pkt_dev->svlan_id != 0xffff) seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi); if (pkt_dev->tos) seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); if (pkt_dev->traffic_class) seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); if (pkt_dev->burst > 1) seq_printf(seq, " burst: %d\n", pkt_dev->burst); if (pkt_dev->node >= 0) seq_printf(seq, " node: %d\n", pkt_dev->node); if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) seq_puts(seq, " xmit_mode: netif_receive\n"); else if (pkt_dev->xmit_mode == M_QUEUE_XMIT) seq_puts(seq, " xmit_mode: xmit_queue\n"); seq_puts(seq, " Flags: "); if (pkt_dev->flags & F_IPV6) seq_puts(seq, "IPV6 "); if (pkt_dev->flags & F_IPSRC_RND) seq_puts(seq, "IPSRC_RND "); if (pkt_dev->flags & F_IPDST_RND) seq_puts(seq, "IPDST_RND "); if (pkt_dev->flags & F_TXSIZE_RND) seq_puts(seq, "TXSIZE_RND "); if (pkt_dev->flags & F_UDPSRC_RND) seq_puts(seq, "UDPSRC_RND "); if (pkt_dev->flags & F_UDPDST_RND) seq_puts(seq, "UDPDST_RND "); if (pkt_dev->flags & F_UDPCSUM) seq_puts(seq, "UDPCSUM "); if (pkt_dev->flags & F_NO_TIMESTAMP) seq_puts(seq, "NO_TIMESTAMP "); if (pkt_dev->flags & F_MPLS_RND) seq_puts(seq, "MPLS_RND "); if (pkt_dev->flags & F_QUEUE_MAP_RND) seq_puts(seq, "QUEUE_MAP_RND "); if (pkt_dev->flags & F_QUEUE_MAP_CPU) seq_puts(seq, "QUEUE_MAP_CPU "); if (pkt_dev->cflows) { if (pkt_dev->flags & F_FLOW_SEQ) seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/ else seq_puts(seq, "FLOW_RND "); } #ifdef CONFIG_XFRM if (pkt_dev->flags & F_IPSEC_ON) { seq_puts(seq, "IPSEC "); if (pkt_dev->spi) seq_printf(seq, "spi:%u", pkt_dev->spi); } #endif if (pkt_dev->flags & F_MACSRC_RND) seq_puts(seq, "MACSRC_RND "); if (pkt_dev->flags & F_MACDST_RND) seq_puts(seq, "MACDST_RND "); if (pkt_dev->flags & F_VID_RND) seq_puts(seq, "VID_RND "); if (pkt_dev->flags & F_SVID_RND) seq_puts(seq, "SVID_RND "); if (pkt_dev->flags & F_NODE) seq_puts(seq, "NODE_ALLOC "); seq_puts(seq, "\n"); /* not really stopped, more like last-running-at */ stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; idle = pkt_dev->idle_acc; do_div(idle, NSEC_PER_USEC); seq_printf(seq, "Current:\n pkts-sofar: %llu errors: %llu\n", (unsigned long long)pkt_dev->sofar, (unsigned long long)pkt_dev->errors); seq_printf(seq, " started: %lluus stopped: %lluus idle: %lluus\n", (unsigned long long) ktime_to_us(pkt_dev->started_at), (unsigned long long) ktime_to_us(stopped), (unsigned long long) idle); seq_printf(seq, " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, pkt_dev->cur_src_mac_offset); if (pkt_dev->flags & F_IPV6) { seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", &pkt_dev->cur_in6_saddr, &pkt_dev->cur_in6_daddr); } else seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); seq_printf(seq, " flows: %u\n", pkt_dev->nflows); if (pkt_dev->result[0]) seq_printf(seq, "Result: %s\n", pkt_dev->result); else seq_puts(seq, "Result: Idle\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson53450.19%413.33%
Francesco Fondelli11610.90%26.67%
Stephen Hemminger10710.06%413.33%
Steven Whitehouse827.71%13.33%
Jamal Hadi Salim494.61%26.67%
Thomas Graf363.38%26.67%
Alexei Starovoitov343.20%26.67%
John Fastabend333.10%26.67%
Fan Du191.79%13.33%
Alexey Dobriyan191.79%13.33%
Jesper Dangaard Brouer161.50%26.67%
Joe Perches80.75%13.33%
Kris Katterjohn30.28%13.33%
Américo Wang30.28%13.33%
Johannes Berg20.19%13.33%
Eric Dumazet20.19%26.67%
Daniel Borkmann10.09%13.33%
Total1064100.00%30100.00%


static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num) { int i = 0; *num = 0; for (; i < maxlen; i++) { int value; char c; *num <<= 4; if (get_user(c, &user_buffer[i])) return -EFAULT; value = hex_to_bin(c); if (value >= 0) *num |= value; else break; } return i; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse7782.80%133.33%
Andy Shevchenko1111.83%133.33%
Francesco Fondelli55.38%133.33%
Total93100.00%3100.00%


static int count_trail_chars(const char __user * user_buffer, unsigned int maxlen) { int i; for (i = 0; i < maxlen; i++) { char c; if (get_user(c, &user_buffer[i])) return -EFAULT; switch (c) { case '\"': case '\n': case '\r': case '\t': case ' ': case '=': break; default: goto done; } } done: return i; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson8798.86%150.00%
Al Viro11.14%150.00%
Total88100.00%2100.00%


static long num_arg(const char __user *user_buffer, unsigned long maxlen, unsigned long *num) { int i; *num = 0; for (i = 0; i < maxlen; i++) { char c; if (get_user(c, &user_buffer[i])) return -EFAULT; if ((c >= '0') && (c <= '9')) { *num *= 10; *num += c - '0'; } else break; } return i; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson9395.88%133.33%
Paul Gortmaker33.09%133.33%
Al Viro11.03%133.33%
Total97100.00%3100.00%


static int strn_len(const char __user * user_buffer, unsigned int maxlen) { int i; for (i = 0; i < maxlen; i++) { char c; if (get_user(c, &user_buffer[i])) return -EFAULT; switch (c) { case '\"': case '\n': case '\r': case '\t': case ' ': goto done_str; default: break; } } done_str: return i; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse5665.88%125.00%
Robert Olsson2529.41%125.00%
Paul Gortmaker33.53%125.00%
Al Viro11.18%125.00%
Total85100.00%4100.00%


static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) { unsigned int n = 0; char c; ssize_t i = 0; int len; pkt_dev->nr_labels = 0; do { __u32 tmp; len = hex32_arg(&buffer[i], 8, &tmp); if (len <= 0) return len; pkt_dev->labels[n] = htonl(tmp); if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) pkt_dev->flags |= F_MPLS_RND; i += len; if (get_user(c, &buffer[i])) return -EFAULT; i++; n++; if (n >= MAX_MPLS_LABELS) return -E2BIG; } while (c == ','); pkt_dev->nr_labels = n; return i; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse12783.01%125.00%
Robert Olsson2315.03%125.00%
Francesco Fondelli21.31%125.00%
Eric Dumazet10.65%125.00%
Total153100.00%4100.00%


static ssize_t pktgen_if_write(struct file *file, const char __user * user_buffer, size_t count, loff_t * offset) { struct seq_file *seq = file->private_data; struct pktgen_dev *pkt_dev = seq->private; int i, max, len; char name[16], valstr[32]; unsigned long value = 0; char *pg_result = NULL; int tmp = 0; char buf[128]; pg_result = &(pkt_dev->result[0]); if (count < 1) { pr_warn("wrong command format\n"); return -EINVAL; } max = count; tmp = count_trail_chars(user_buffer, max); if (tmp < 0) { pr_warn("illegal format\n"); return tmp; } i = tmp; /* Read variable name */ len = strn_len(&user_buffer[i], sizeof(name) - 1); if (len < 0) return len; memset(name, 0, sizeof(name)); if (copy_from_user(name, &user_buffer[i], len)) return -EFAULT; i += len; max = count - i; len = count_trail_chars(&user_buffer[i], max); if (len < 0) return len; i += len; if (debug) { size_t copy = min_t(size_t, count, 1023); char tb[copy + 1]; if (copy_from_user(tb, user_buffer, copy)) return -EFAULT; tb[copy] = 0; pr_debug("%s,%lu buffer -:%s:-\n", name, (unsigned long)count, tb); } if (!strcmp(name, "min_pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value < 14 + 20 + 8) value = 14 + 20 + 8; if (value != pkt_dev->min_pkt_size) { pkt_dev->min_pkt_size = value; pkt_dev->cur_pkt_size = value; } sprintf(pg_result, "OK: min_pkt_size=%u", pkt_dev->min_pkt_size); return count; } if (!strcmp(name, "max_pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value < 14 + 20 + 8) value = 14 + 20 + 8; if (value != pkt_dev->max_pkt_size) { pkt_dev->max_pkt_size = value; pkt_dev->cur_pkt_size = value; } sprintf(pg_result, "OK: max_pkt_size=%u", pkt_dev->max_pkt_size); return count; } /* Shortcut for min = max */ if (!strcmp(name, "pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value < 14 + 20 + 8) value = 14 + 20 + 8; if (value != pkt_dev->min_pkt_size) { pkt_dev->min_pkt_size = value; pkt_dev->max_pkt_size = value; pkt_dev->cur_pkt_size = value; } sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); return count; } if (!strcmp(name, "debug")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; debug = value; sprintf(pg_result, "OK: debug=%u", debug); return count; } if (!strcmp(name, "frags")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; pkt_dev->nfrags = value; sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); return count; } if (!strcmp(name, "delay")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value == 0x7FFFFFFF) pkt_dev->delay = ULLONG_MAX; else pkt_dev->delay = (u64)value; sprintf(pg_result, "OK: delay=%llu", (unsigned long long) pkt_dev->delay); return count; } if (!strcmp(name, "rate")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (!value) return len; pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; if (debug) pr_info("Delay set at: %llu ns\n", pkt_dev->delay); sprintf(pg_result, "OK: rate=%lu", value); return count; } if (!strcmp(name, "ratep")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (!value) return len; pkt_dev->delay = NSEC_PER_SEC/value; if (debug) pr_info("Delay set at: %llu ns\n", pkt_dev->delay); sprintf(pg_result, "OK: rate=%lu", value); return count; } if (!strcmp(name, "udp_src_min")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value != pkt_dev->udp_src_min) { pkt_dev->udp_src_min = value; pkt_dev->cur_udp_src = value; } sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); return count; } if (!strcmp(name, "udp_dst_min")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value != pkt_dev->udp_dst_min) { pkt_dev->udp_dst_min = value; pkt_dev->cur_udp_dst = value; } sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); return count; } if (!strcmp(name, "udp_src_max")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value != pkt_dev->udp_src_max) { pkt_dev->udp_src_max = value; pkt_dev->cur_udp_src = value; } sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); return count; } if (!strcmp(name, "udp_dst_max")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value != pkt_dev->udp_dst_max) { pkt_dev->udp_dst_max = value; pkt_dev->cur_udp_dst = value; } sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); return count; } if (!strcmp(name, "clone_skb")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; if ((value > 0) && ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) || !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) return -ENOTSUPP; i += len; pkt_dev->clone_skb = value; sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); return count; } if (!strcmp(name, "count")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; pkt_dev->count = value; sprintf(pg_result, "OK: count=%llu", (unsigned long long)pkt_dev->count); return count; } if (!strcmp(name, "src_mac_count")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (pkt_dev->src_mac_count != value) { pkt_dev->src_mac_count = value; pkt_dev->cur_src_mac_offset = 0; } sprintf(pg_result, "OK: src_mac_count=%d", pkt_dev->src_mac_count); return count; } if (!strcmp(name, "dst_mac_count")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (pkt_dev->dst_mac_count != value) { pkt_dev->dst_mac_count = value; pkt_dev->cur_dst_mac_offset = 0; } sprintf(pg_result, "OK: dst_mac_count=%d", pkt_dev->dst_mac_count); return count; } if (!strcmp(name, "burst")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if ((value > 1) && ((pkt_dev->xmit_mode == M_QUEUE_XMIT) || ((pkt_dev->xmit_mode == M_START_XMIT) && (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))))) return -ENOTSUPP; pkt_dev->burst = value < 1 ? 1 : value; sprintf(pg_result, "OK: burst=%d", pkt_dev->burst); return count; } if (!strcmp(name, "node")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (node_possible(value)) { pkt_dev->node = value; sprintf(pg_result, "OK: node=%d", pkt_dev->node); if (pkt_dev->page) { put_page(pkt_dev->page); pkt_dev->page = NULL; } } else sprintf(pg_result, "ERROR: node not possible"); return count; } if (!strcmp(name, "xmit_mode")) { char f[32]; memset(f, 0, 32); len = strn_len(&user_buffer[i], sizeof(f) - 1); if (len < 0) return len; if (copy_from_user(f, &user_buffer[i], len)) return -EFAULT; i += len; if (strcmp(f, "start_xmit") == 0) { pkt_dev->xmit_mode = M_START_XMIT; } else if (strcmp(f, "netif_receive") == 0) { /* clone_skb set earlier, not supported in this mode */ if (pkt_dev->clone_skb > 0) return -ENOTSUPP; pkt_dev->xmit_mode = M_NETIF_RECEIVE; /* make sure new packet is allocated every time * pktgen_xmit() is called */ pkt_dev->last_ok = 1; /* override clone_skb if user passed default value * at module loading time */ pkt_dev->clone_skb = 0; } else if (strcmp(f, "queue_xmit") == 0) { pkt_dev->xmit_mode = M_QUEUE_XMIT; pkt_dev->last_ok = 1; } else { sprintf(pg_result, "xmit_mode -:%s:- unknown\nAvailable modes: %s", f, "start_xmit, netif_receive\n"); return count; } sprintf(pg_result, "OK: xmit_mode=%s", f); return count; } if (!strcmp(name, "flag")) { char f[32]; memset(f, 0, 32); len = strn_len(&user_buffer[i], sizeof(f) - 1); if (len < 0) return len; if (copy_from_user(f, &user_buffer[i], len)) return -EFAULT; i += len; if (strcmp(f, "IPSRC_RND") == 0) pkt_dev->flags |= F_IPSRC_RND; else if (strcmp(f, "!IPSRC_RND") == 0) pkt_dev->flags &= ~F_IPSRC_RND; else if (strcmp(f, "TXSIZE_RND") == 0) pkt_dev->flags |= F_TXSIZE_RND; else if (strcmp(f, "!TXSIZE_RND") == 0) pkt_dev->flags &= ~F_TXSIZE_RND; else if (strcmp(f, "IPDST_RND") == 0) pkt_dev->flags |= F_IPDST_RND; else if (strcmp(f, "!IPDST_RND") == 0) pkt_dev->flags &= ~F_IPDST_RND; else if (strcmp(f, "UDPSRC_RND") == 0) pkt_dev->flags |= F_UDPSRC_RND; else if (strcmp(f, "!UDPSRC_RND") == 0) pkt_dev->flags &= ~F_UDPSRC_RND; else if (strcmp(f, "UDPDST_RND") == 0) pkt_dev->flags |= F_UDPDST_RND; else if (strcmp(f, "!UDPDST_RND") == 0) pkt_dev->flags &= ~F_UDPDST_RND; else if (strcmp(f, "MACSRC_RND") == 0) pkt_dev->flags |= F_MACSRC_RND; else if (strcmp(f, "!MACSRC_RND") == 0) pkt_dev->flags &= ~F_MACSRC_RND; else if (strcmp(f, "MACDST_RND") == 0) pkt_dev->flags |= F_MACDST_RND; else if (strcmp(f, "!MACDST_RND") == 0) pkt_dev->flags &= ~F_MACDST_RND; else if (strcmp(f, "MPLS_RND") == 0) pkt_dev->flags |= F_MPLS_RND; else if (strcmp(f, "!MPLS_RND") == 0) pkt_dev->flags &= ~F_MPLS_RND; else if (strcmp(f, "VID_RND") == 0) pkt_dev->flags |= F_VID_RND; else if (strcmp(f, "!VID_RND") == 0) pkt_dev->flags &= ~F_VID_RND; else if (strcmp(f, "SVID_RND") == 0) pkt_dev->flags |= F_SVID_RND; else if (strcmp(f, "!SVID_RND") == 0) pkt_dev->flags &= ~F_SVID_RND; else if (strcmp(f, "FLOW_SEQ") == 0) pkt_dev->flags |= F_FLOW_SEQ; else if (strcmp(f, "QUEUE_MAP_RND") == 0) pkt_dev->flags |= F_QUEUE_MAP_RND; else if (strcmp(f, "!QUEUE_MAP_RND") == 0) pkt_dev->flags &= ~F_QUEUE_MAP_RND; else if (strcmp(f, "QUEUE_MAP_CPU") == 0) pkt_dev->flags |= F_QUEUE_MAP_CPU; else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) pkt_dev->flags &= ~F_QUEUE_MAP_CPU; #ifdef CONFIG_XFRM else if (strcmp(f, "IPSEC") == 0) pkt_dev->flags |= F_IPSEC_ON; #endif else if (strcmp(f, "!IPV6") == 0) pkt_dev->flags &= ~F_IPV6; else if (strcmp(f, "NODE_ALLOC") == 0) pkt_dev->flags |= F_NODE; else if (strcmp(f, "!NODE_ALLOC") == 0) pkt_dev->flags &= ~F_NODE; else if (strcmp(f, "UDPCSUM") == 0) pkt_dev->flags |= F_UDPCSUM; else if (strcmp(f, "!UDPCSUM") == 0) pkt_dev->flags &= ~F_UDPCSUM; else if (strcmp(f, "NO_TIMESTAMP") == 0) pkt_dev->flags |= F_NO_TIMESTAMP; else if (strcmp(f, "!NO_TIMESTAMP") == 0) pkt_dev->flags &= ~F_NO_TIMESTAMP; else { sprintf(pg_result, "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", f, "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " "NO_TIMESTAMP, " #ifdef CONFIG_XFRM "IPSEC, " #endif "NODE_ALLOC\n"); return count; } sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); return count; } if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); if (len < 0) return len; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; if (strcmp(buf, pkt_dev->dst_min) != 0) { memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); strncpy(pkt_dev->dst_min, buf, len); pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); pkt_dev->cur_daddr = pkt_dev->daddr_min; } if (debug) pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); i += len; sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); return count; } if (!strcmp(name, "dst_max")) { len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); if (len < 0) return len; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; if (strcmp(buf, pkt_dev->dst_max) != 0) { memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); strncpy(pkt_dev->dst_max, buf, len); pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); pkt_dev->cur_daddr = pkt_dev->daddr_max; } if (debug) pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); i += len; sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); return count; } if (!strcmp(name, "dst6")) { len = strn_len(&user_buffer[i], sizeof(buf) - 1); if (len < 0) return len; pkt_dev->flags |= F_IPV6; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; if (debug) pr_debug("dst6 set to: %s\n", buf); i += len; sprintf(pg_result, "OK: dst6=%s", buf); return count; } if (!strcmp(name, "dst6_min")) { len = strn_len(&user_buffer[i], sizeof(buf) - 1); if (len < 0) return len; pkt_dev->flags |= F_IPV6; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; if (debug) pr_debug("dst6_min set to: %s\n", buf); i += len; sprintf(pg_result, "OK: dst6_min=%s", buf); return count; } if (!strcmp(name, "dst6_max")) { len = strn_len(&user_buffer[i], sizeof(buf) - 1); if (len < 0) return len; pkt_dev->flags |= F_IPV6; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); if (debug) pr_debug("dst6_max set to: %s\n", buf); i += len; sprintf(pg_result, "OK: dst6_max=%s", buf); return count; } if (!strcmp(name, "src6")) { len = strn_len(&user_buffer[i], sizeof(buf) - 1); if (len < 0) return len; pkt_dev->flags |= F_IPV6; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; if (debug) pr_debug("src6 set to: %s\n", buf); i += len; sprintf(pg_result, "OK: src6=%s", buf); return count; } if (!strcmp(name, "src_min")) { len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); if (len < 0) return len; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; if (strcmp(buf, pkt_dev->src_min) != 0) { memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); strncpy(pkt_dev->src_min, buf, len); pkt_dev->saddr_min = in_aton(pkt_dev->src_min); pkt_dev->cur_saddr = pkt_dev->saddr_min; } if (debug) pr_debug("src_min set to: %s\n", pkt_dev->src_min); i += len; sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); return count; } if (!strcmp(name, "src_max")) { len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); if (len < 0) return len; if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; buf[len] = 0; if (strcmp(buf, pkt_dev->src_max) != 0) { memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); strncpy(pkt_dev->src_max, buf, len); pkt_dev->saddr_max = in_aton(pkt_dev->src_max); pkt_dev->cur_saddr = pkt_dev->saddr_max; } if (debug) pr_debug("src_max set to: %s\n", pkt_dev->src_max); i += len; sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); return count; } if (!strcmp(name, "dst_mac")) { len = strn_len(&user_buffer[i], sizeof(valstr) - 1); if (len < 0) return len; memset(valstr, 0, sizeof(valstr)); if (copy_from_user(valstr, &user_buffer[i], len)) return -EFAULT; if (!mac_pton(valstr, pkt_dev->dst_mac)) return -EINVAL; /* Set up Dest MAC */ ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); return count; } if (!strcmp(name, "src_mac")) { len = strn_len(&user_buffer[i], sizeof(valstr) - 1); if (len < 0) return len; memset(valstr, 0, sizeof(valstr)); if (copy_from_user(valstr, &user_buffer[i], len)) return -EFAULT; if (!mac_pton(valstr, pkt_dev->src_mac)) return -EINVAL; /* Set up Src MAC */ ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); return count; } if (!strcmp(name, "clear_counters")) { pktgen_clear_counters(pkt_dev); sprintf(pg_result, "OK: Clearing counters.\n"); return count; } if (!strcmp(name, "flows")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; if (value > MAX_CFLOWS) value = MAX_CFLOWS; pkt_dev->cflows = value; sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); return count; } #ifdef CONFIG_XFRM if (!strcmp(name, "spi")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; pkt_dev->spi = value; sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); return count; } #endif if (!strcmp(name, "flowlen")) { len = num_arg(&user_buffer[i], 10, &value); if (len < 0) return len; i += len; pkt_dev->lflow = value; sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); return count; } if (!strcmp(name, "queue_map_min")) { len = num_arg(&user_buffer[i], 5, &value); if (len < 0) return len; i += len; pkt_dev->queue_map_min = value; sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); return count; } if (!strcmp(name, "queue_map_max")) { len = num_arg(&user_buffer[i], 5, &value); if (len < 0) return len; i += len; pkt_dev->queue_map_max = value; sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); return count; } if (!strcmp(name, "mpls")) { unsigned int n, cnt; len = get_labels(&user_buffer[i], pkt_dev); if (len < 0) return len; i += len; cnt = sprintf(pg_result, "OK: mpls="); for (n = 0; n < pkt_dev->nr_labels; n++) cnt += sprintf(pg_result + cnt, "%08x%s", ntohl(pkt_dev->labels[n]), n == pkt_dev->nr_labels-1 ? "" : ","); if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ pkt_dev->svlan_id = 0xffff; if (debug) pr_debug("VLAN/SVLAN auto turned off\n"); } return count; } if (!strcmp(name, "vlan_id")) { len = num_arg(&user_buffer[i], 4, &value); if (len < 0) return len; i += len; if (value <= 4095) { pkt_dev->vlan_id = value; /* turn on VLAN */ if (debug) pr_debug("VLAN turned on\n"); if (debug && pkt_dev->nr_labels) pr_debug("MPLS auto turned off\n"); pkt_dev->nr_labels = 0; /* turn off MPLS */ sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); } else { pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ pkt_dev->svlan_id = 0xffff; if (debug) pr_debug("VLAN/SVLAN turned off\n"); } return count; } if (!strcmp(name, "vlan_p")) { len = num_arg(&user_buffer[i], 1, &value); if (len < 0) return len; i += len; if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { pkt_dev->vlan_p = value; sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); } else { sprintf(pg_result, "ERROR: vlan_p must be 0-7"); } return count; } if (!strcmp(name, "vlan_cfi")) { len = num_arg(&user_buffer[i], 1, &value); if (len < 0) return len; i += len; if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { pkt_dev->vlan_cfi = value; sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); } else { sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); } return count; } if (!strcmp(name, "svlan_id")) { len = num_arg(&user_buffer[i], 4, &value); if (len < 0) return len; i += len; if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { pkt_dev->svlan_id = value; /* turn on SVLAN */ if (debug) pr_debug("SVLAN turned on\n"); if (debug && pkt_dev->nr_labels) pr_debug("MPLS auto turned off\n"); pkt_dev->nr_labels = 0; /* turn off MPLS */ sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); } else { pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ pkt_dev->svlan_id = 0xffff; if (debug) pr_debug("VLAN/SVLAN turned off\n"); } return count; } if (!strcmp(name, "svlan_p")) { len = num_arg(&user_buffer[i], 1, &value); if (len < 0) return len; i += len; if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { pkt_dev->svlan_p = value; sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); } else { sprintf(pg_result, "ERROR: svlan_p must be 0-7"); } return count; } if (!strcmp(name, "svlan_cfi")) { len = num_arg(&user_buffer[i], 1, &value); if (len < 0) return len; i += len; if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { pkt_dev->svlan_cfi = value; sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); } else { sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); } return count; } if (!strcmp(name, "tos")) { __u32 tmp_value = 0; len = hex32_arg(&user_buffer[i], 2, &tmp_value); if (len < 0) return len; i += len; if (len == 2) { pkt_dev->tos = tmp_value; sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); } else { sprintf(pg_result, "ERROR: tos must be 00-ff"); } return count; } if (!strcmp(name, "traffic_class")) { __u32 tmp_value = 0; len = hex32_arg(&user_buffer[i], 2, &tmp_value); if (len < 0) return len; i += len; if (len == 2) { pkt_dev->traffic_class = tmp_value; sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); } else { sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); } return count; } if (!strcmp(name, "skb_priority")) { len = num_arg(&user_buffer[i], 9, &value); if (len < 0) return len; i += len; pkt_dev->skb_priority = value; sprintf(pg_result, "OK: skb_priority=%i", pkt_dev->skb_priority); return count; } sprintf(pkt_dev->result, "No such parameter \"%s\"", name); return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson345662.70%511.90%
Francesco Fondelli90916.49%24.76%
Alexei Starovoitov2554.63%37.14%
Daniel Turull1663.01%12.38%
Steven Whitehouse1362.47%12.38%
John Fastabend991.80%24.76%
Fan Du661.20%24.76%
Alexey Dobriyan651.18%37.14%
Eric Dumazet470.85%37.14%
Stephen Hemminger440.80%37.14%
Joe Perches420.76%49.52%
Jamal Hadi Salim410.74%24.76%
Jesper Dangaard Brouer380.69%24.76%
Thomas Graf370.67%12.38%
Américo Wang360.65%12.38%
Neil Horman250.45%12.38%
Adit Ranadive230.42%12.38%
Nelson Elhage120.22%12.38%
Mathias Krause100.18%12.38%
Dmitry Torokhov30.05%12.38%
Paul Gortmaker10.02%12.38%
Al Viro10.02%12.38%
Total5512100.00%42100.00%


static int pktgen_if_open(struct inode *inode, struct file *file) { return single_open(file, pktgen_if_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger1862.07%125.00%
Francesco Fondelli827.59%125.00%
Robert Olsson26.90%125.00%
Al Viro13.45%125.00%
Total29100.00%4100.00%

static const struct file_operations pktgen_if_fops = { .owner = THIS_MODULE, .open = pktgen_if_open, .read = seq_read, .llseek = seq_lseek, .write = pktgen_if_write, .release = single_release, };
static int pktgen_thread_show(struct seq_file *seq, void *v) { struct pktgen_thread *t = seq->private; const struct pktgen_dev *pkt_dev; BUG_ON(!t); seq_puts(seq, "Running: "); rcu_read_lock(); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) if (pkt_dev->running) seq_printf(seq, "%s ", pkt_dev->odevname); seq_puts(seq, "\nStopped: "); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) if (!pkt_dev->running) seq_printf(seq, "%s ", pkt_dev->odevname); if (t->result[0]) seq_printf(seq, "\nResult: %s\n", t->result); else seq_puts(seq, "\nResult: NA\n"); rcu_read_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson9065.22%225.00%
Stephen Hemminger2316.67%225.00%
Luiz Fernando N. Capitulino1410.14%112.50%
Jesper Dangaard Brouer64.35%112.50%
Thomas Graf32.17%112.50%
Eric Dumazet21.45%112.50%
Total138100.00%8100.00%


static ssize_t pktgen_thread_write(struct file *file, const char __user * user_buffer, size_t count, loff_t * offset) { struct seq_file *seq = file->private_data; struct pktgen_thread *t = seq->private; int i, max, len, ret; char name[40]; char *pg_result; if (count < 1) { // sprintf(pg_result, "Wrong command format"); return -EINVAL; } max = count; len = count_trail_chars(user_buffer, max); if (len < 0) return len; i = len; /* Read variable name */ len = strn_len(&user_buffer[i], sizeof(name) - 1); if (len < 0) return len; memset(name, 0, sizeof(name)); if (copy_from_user(name, &user_buffer[i], len)) return -EFAULT; i += len; max = count - i; len = count_trail_chars(&user_buffer[i], max); if (len < 0) return len; i += len; if (debug) pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); if (!t) { pr_err("ERROR: No thread\n"); ret = -EINVAL; goto out; } pg_result = &(t->result[0]); if (!strcmp(name, "add_device")) { char f[32]; memset(f, 0, 32); len = strn_len(&user_buffer[i], sizeof(f) - 1); if (len < 0) { ret = len; goto out; } if (copy_from_user(f, &user_buffer[i], len)) return -EFAULT; i += len; mutex_lock(&pktgen_thread_lock); ret = pktgen_add_device(t, f); mutex_unlock(&pktgen_thread_lock); if (!ret) { ret = count; sprintf(pg_result, "OK: add_device=%s", f); } else sprintf(pg_result, "ERROR: can not add device %s", f); goto out; } if (!strcmp(name, "rem_device_all")) { mutex_lock(&pktgen_thread_lock); t->control |= T_REMDEVALL; mutex_unlock(&pktgen_thread_lock); schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ ret = count; sprintf(pg_result, "OK: rem_device_all"); goto out; } if (!strcmp(name, "max_before_softirq")) { sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); ret = count; goto out; } ret = -EINVAL; out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson39082.98%323.08%
Stephen Hemminger275.74%17.69%
Luiz Fernando N. Capitulino224.68%215.38%
Américo Wang194.04%17.69%
Nishanth Aravamudan51.06%17.69%
Joe Perches40.85%215.38%
Paul Gortmaker10.21%17.69%
Al Viro10.21%17.69%
Arthur Kepner10.21%17.69%
Total470100.00%13100.00%


static int pktgen_thread_open(struct inode *inode, struct file *file) { return single_open(file, pktgen_thread_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger1862.07%133.33%
Robert Olsson1034.48%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations pktgen_thread_fops = { .owner = THIS_MODULE, .open = pktgen_thread_open, .read = seq_read, .llseek = seq_lseek, .write = pktgen_thread_write, .release = single_release, }; /* Think find or remove for NN */
static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, const char *ifname, int remove) { struct pktgen_thread *t; struct pktgen_dev *pkt_dev = NULL; bool exact = (remove == FIND); list_for_each_entry(t, &pn->pktgen_threads, th_list) { pkt_dev = pktgen_find_dev(t, ifname, exact); if (pkt_dev) { if (remove) { pkt_dev->removal_mark = 1; t->control |= T_REMDEV; } break; } } return pkt_dev; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson5761.96%120.00%
Eric Dumazet1111.96%120.00%
Arthur Kepner1010.87%120.00%
Américo Wang77.61%120.00%
Luiz Fernando N. Capitulino77.61%120.00%
Total92100.00%5100.00%

/* * mark a device for removal */
static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) { struct pktgen_dev *pkt_dev = NULL; const int max_tries = 10, msec_per_try = 125; int i = 0; mutex_lock(&pktgen_thread_lock); pr_debug("%s: marking %s for removal\n", __func__, ifname); while (1) { pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); if (pkt_dev == NULL) break; /* success */ mutex_unlock(&pktgen_thread_lock); pr_debug("%s: waiting for %s to disappear....\n", __func__, ifname); schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); mutex_lock(&pktgen_thread_lock); if (++i >= max_tries) { pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", __func__, msec_per_try * i, ifname); break; } } mutex_unlock(&pktgen_thread_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Arthur Kepner7051.09%114.29%
Robert Olsson2518.25%114.29%
Luiz Fernando N. Capitulino2014.60%114.29%
Joe Perches107.30%114.29%
Américo Wang85.84%114.29%
Stephen Hemminger42.92%228.57%
Total137100.00%7100.00%


static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) { struct pktgen_thread *t; mutex_lock(&pktgen_thread_lock); list_for_each_entry(t, &pn->pktgen_threads, th_list) { struct pktgen_dev *pkt_dev; if_lock(t); list_for_each_entry(pkt_dev, &t->if_list, list) { if (pkt_dev->odev != dev) continue; proc_remove(pkt_dev->entry); pkt_dev->entry = proc_create_data(dev->name, 0600, pn->proc_dir, &pktgen_if_fops, pkt_dev); if (!pkt_dev->entry) pr_err("can't move proc entry for '%s'\n", dev->name); break; } if_unlock(t); } mutex_unlock(&pktgen_thread_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger8165.32%112.50%
Eric Dumazet2116.94%112.50%
Américo Wang108.06%112.50%
Alexey Dobriyan64.84%112.50%
Joe Perches21.61%112.50%
Jesper Dangaard Brouer21.61%112.50%
Robert Olsson10.81%112.50%
David Howells10.81%112.50%
Total124100.00%8100.00%


static int pktgen_device_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); if (pn->pktgen_exiting) return NOTIFY_DONE; /* It is OK that we do not hold the group lock right now, * as we run under the RTNL lock. */ switch (event) { case NETDEV_CHANGENAME: pktgen_change_name(pn, dev); break; case NETDEV_UNREGISTER: pktgen_mark_device(pn, dev->name); break; } return NOTIFY_DONE; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson4956.32%111.11%
Américo Wang1618.39%111.11%
Stephen Hemminger66.90%111.11%
Hideaki Yoshifuji / 吉藤英明66.90%222.22%
Eric W. Biedermann55.75%111.11%
Jiri Pirko33.45%111.11%
Arthur Kepner11.15%111.11%
Eric Dumazet11.15%111.11%
Total87100.00%9100.00%


static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, struct pktgen_dev *pkt_dev, const char *ifname) { char b[IFNAMSIZ+5]; int i; for (i = 0; ifname[i] != '@'; i++) { if (i == IFNAMSIZ) break; b[i] = ifname[i]; } b[i] = 0; return dev_get_by_name(pn->net, b); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson7889.66%150.00%
Américo Wang910.34%150.00%
Total87100.00%2100.00%

/* Associate pktgen_dev with a device. */
static int pktgen_setup_dev(const struct pktgen_net *pn, struct pktgen_dev *pkt_dev, const char *ifname) { struct net_device *odev; int err; /* Clean old setups */ if (pkt_dev->odev) { dev_put(pkt_dev->odev); pkt_dev->odev = NULL; } odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); if (!odev) { pr_err("no such netdevice: \"%s\"\n", ifname); return -ENODEV; } if (odev->type != ARPHRD_ETHER) { pr_err("not an ethernet device: \"%s\"\n", ifname); err = -EINVAL; } else if (!netif_running(odev)) { pr_err("device is down: \"%s\"\n", ifname); err = -ENETDOWN; } else { pkt_dev->odev = odev; return 0; } dev_put(odev); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson10269.86%233.33%
Stephen Hemminger2919.86%116.67%
Américo Wang85.48%116.67%
Joe Perches64.11%116.67%
Eric W. Biedermann10.68%116.67%
Total146100.00%6100.00%

/* Read pkt_dev from the interface and set up internal pktgen_dev * structure to have the right information to create/send packets */
static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) { int ntxq; if (!pkt_dev->odev) { pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); sprintf(pkt_dev->result, "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); return; } /* make sure that we don't pick a non-existing transmit queue */ ntxq = pkt_dev->odev->real_num_tx_queues; if (ntxq <= pkt_dev->queue_map_min) { pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, pkt_dev->odevname); pkt_dev->queue_map_min = (ntxq ?: 1) - 1; } if (pkt_dev->queue_map_max >= ntxq) { pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, pkt_dev->odevname); pkt_dev->queue_map_max = (ntxq ?: 1) - 1; } /* Default to the interface's mac if not explicitly set. */ if (is_zero_ether_addr(pkt_dev->src_mac)) ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); /* Set up Dest MAC */ ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); if (pkt_dev->flags & F_IPV6) { int i, set = 0, err = 1; struct inet6_dev *idev; if (pkt_dev->min_pkt_size == 0) { pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) + sizeof(struct udphdr) + sizeof(struct pktgen_hdr) + pkt_dev->pkt_overhead; } for (i = 0; i < IN6_ADDR_HSIZE; i++) if (pkt_dev->cur_in6_saddr.s6_addr[i]) { set = 1; break; } if (!set) { /* * Use linklevel address if unconfigured. * * use ipv6_get_lladdr if/when it's get exported */ rcu_read_lock(); idev = __in6_dev_get(pkt_dev->odev); if (idev) { struct inet6_ifaddr *ifp; read_lock_bh(&idev->lock); list_for_each_entry(ifp, &idev->addr_list, if_list) { if ((ifp->scope & IFA_LINK) && !(ifp->flags & IFA_F_TENTATIVE)) { pkt_dev->cur_in6_saddr = ifp->addr; err = 0; break; } } read_unlock_bh(&idev->lock); } rcu_read_unlock(); if (err) pr_err("ERROR: IPv6 link address not available\n"); } } else { if (pkt_dev->min_pkt_size == 0) { pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(struct pktgen_hdr) + pkt_dev->pkt_overhead; } pkt_dev->saddr_min = 0; pkt_dev->saddr_max = 0; if (strlen(pkt_dev->src_min) == 0) { struct in_device *in_dev; rcu_read_lock(); in_dev = __in_dev_get_rcu(pkt_dev->odev); if (in_dev) { if (in_dev->ifa_list) { pkt_dev->saddr_min = in_dev->ifa_list->ifa_address; pkt_dev->saddr_max = pkt_dev->saddr_min; } } rcu_read_unlock(); } else { pkt_dev->saddr_min = in_aton(pkt_dev->src_min); pkt_dev->saddr_max = in_aton(pkt_dev->src_max); } pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); } /* Initialize current values. */ pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; pkt_dev->cur_dst_mac_offset = 0; pkt_dev->cur_src_mac_offset = 0; pkt_dev->cur_saddr = pkt_dev->saddr_min; pkt_dev->cur_daddr = pkt_dev->daddr_min; pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; pkt_dev->cur_udp_src = pkt_dev->udp_src_min; pkt_dev->nflows = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson32752.07%16.25%
Américo Wang12920.54%212.50%
Andrew Gallatin7011.15%16.25%
Lucio Maciel477.48%16.25%
Jesse Brandeburg203.18%16.25%
Joe Perches101.59%318.75%
Dan Carpenter101.59%16.25%
Hideaki Yoshifuji / 吉藤英明40.64%16.25%
Stephen Hemminger40.64%16.25%
Kris Katterjohn30.48%16.25%
Eric Dumazet20.32%16.25%
Herbert Xu10.16%16.25%
Alexey Dobriyan10.16%16.25%
Total628100.00%16100.00%


static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) { ktime_t start_time, end_time; s64 remaining; struct hrtimer_sleeper t; hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); hrtimer_set_expires(&t.timer, spin_until); remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); if (remaining <= 0) goto out; start_time = ktime_get(); if (remaining < 100000) { /* for small delays (<100us), just loop until limit is reached */ do { end_time = ktime_get(); } while (ktime_compare(end_time, spin_until) < 0); } else { /* see do_nanosleep */ hrtimer_init_sleeper(&t, current); do { set_current_state(TASK_INTERRUPTIBLE); hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); if (likely(t.task)) schedule(); hrtimer_cancel(&t.timer); } while (t.task && pkt_dev->running && !signal_pending(current)); __set_current_state(TASK_RUNNING); end_time = ktime_get(); } pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); out: pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); destroy_hrtimer_on_stack(&t.timer); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger14265.14%327.27%
Robert Olsson2511.47%19.09%
Eric Dumazet198.72%218.18%
Guenter Roeck135.96%19.09%
Lucio Maciel104.59%19.09%
Daniel Borkmann62.75%19.09%
Daniel Turull31.38%218.18%
Total218100.00%11100.00%


static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) { pkt_dev->pkt_overhead = 0; pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim4897.96%266.67%
Paolo Abeni12.04%133.33%
Total49100.00%3100.00%


static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) { return !!(pkt_dev->flows[flow].flags & F_INIT); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim2578.12%133.33%
Stephen Hemminger618.75%133.33%
Lucio Maciel13.12%133.33%
Total32100.00%3100.00%


static inline int f_pick(struct pktgen_dev *pkt_dev) { int flow = pkt_dev->curfl; if (pkt_dev->flags & F_FLOW_SEQ) { if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { /* reset time */ pkt_dev->flows[flow].count = 0; pkt_dev->flows[flow].flags = 0; pkt_dev->curfl += 1; if (pkt_dev->curfl >= pkt_dev->cflows) pkt_dev->curfl = 0; /*reset */ } } else { flow = prandom_u32() % pkt_dev->cflows; pkt_dev->curfl = flow; if (pkt_dev->flows[flow].count > pkt_dev->lflow) { pkt_dev->flows[flow].count = 0; pkt_dev->flows[flow].flags = 0; } } return pkt_dev->curfl; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson7850.65%240.00%
Jamal Hadi Salim7045.45%120.00%
Lucio Maciel53.25%120.00%
Akinobu Mita10.65%120.00%
Total154100.00%5100.00%

#ifdef CONFIG_XFRM /* If there was already an IPSEC SA, we keep it as is, else * we go look for it ... */ #define DUMMY_MARK 0
static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) { struct xfrm_state *x = pkt_dev->flows[flow].x; struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); if (!x) { if (pkt_dev->spi) { /* We need as quick as possible to find the right SA * Searching with minimum criteria to archieve this. */ x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); } else { /* slow path: we dont already have xfrm_state */ x = xfrm_stateonly_find(pn->net, DUMMY_MARK, (xfrm_address_t *)&pkt_dev->cur_daddr, (xfrm_address_t *)&pkt_dev->cur_saddr, AF_INET, pkt_dev->ipsmode, pkt_dev->ipsproto, 0); } if (x) { pkt_dev->flows[flow].x = x; set_pkt_overhead(pkt_dev); pkt_dev->pkt_overhead += x->props.header_len; } } }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim10366.03%233.33%
Fan Du3119.87%116.67%
Américo Wang2012.82%116.67%
Alexey Dobriyan10.64%116.67%
Adrian Bunk10.64%116.67%
Total156100.00%6100.00%

#endif
static void set_cur_queue_map(struct pktgen_dev *pkt_dev) { if (pkt_dev->flags & F_QUEUE_MAP_CPU) pkt_dev->cur_queue_map = smp_processor_id(); else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { __u16 t; if (pkt_dev->flags & F_QUEUE_MAP_RND) { t = prandom_u32() % (pkt_dev->queue_map_max - pkt_dev->queue_map_min + 1) + pkt_dev->queue_map_min; } else { t = pkt_dev->cur_queue_map + 1; if (t > pkt_dev->queue_map_max) t = pkt_dev->queue_map_min; } pkt_dev->cur_queue_map = t; } pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller8672.88%120.00%
Robert Olsson3025.42%240.00%
Eric Dumazet10.85%120.00%
Akinobu Mita10.85%120.00%
Total118100.00%5100.00%

/* Increment/randomize headers according to flags and current values * for IP src/dest, UDP src/dst port, MAC-Addr src/dst */
static void mod_cur_headers(struct pktgen_dev *pkt_dev) { __u32 imn; __u32 imx; int flow = 0; if (pkt_dev->cflows) flow = f_pick(pkt_dev); /* Deal with source MAC */ if (pkt_dev->src_mac_count > 1) { __u32 mc; __u32 tmp; if (pkt_dev->flags & F_MACSRC_RND) mc = prandom_u32() % pkt_dev->src_mac_count; else { mc = pkt_dev->cur_src_mac_offset++; if (pkt_dev->cur_src_mac_offset >= pkt_dev->src_mac_count) pkt_dev->cur_src_mac_offset = 0; } tmp = pkt_dev->src_mac[5] + (mc & 0xFF); pkt_dev->hh[11] = tmp; tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); pkt_dev->hh[10] = tmp; tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); pkt_dev->hh[9] = tmp; tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); pkt_dev->hh[8] = tmp; tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); pkt_dev->hh[7] = tmp; } /* Deal with Destination MAC */ if (pkt_dev->dst_mac_count > 1) { __u32 mc; __u32 tmp; if (pkt_dev->flags & F_MACDST_RND) mc = prandom_u32() % pkt_dev->dst_mac_count; else { mc = pkt_dev->cur_dst_mac_offset++; if (pkt_dev->cur_dst_mac_offset >= pkt_dev->dst_mac_count) { pkt_dev->cur_dst_mac_offset = 0; } } tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); pkt_dev->hh[5] = tmp; tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); pkt_dev->hh[4] = tmp; tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); pkt_dev->hh[3] = tmp; tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); pkt_dev->hh[2] = tmp; tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); pkt_dev->hh[1] = tmp; } if (pkt_dev->flags & F_MPLS_RND) { unsigned int i; for (i = 0; i < pkt_dev->nr_labels; i++) if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) pkt_dev->labels[i] = MPLS_STACK_BOTTOM | ((__force __be32)prandom_u32() & htonl(0x000fffff)); } if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { pkt_dev->vlan_id = prandom_u32() & (4096 - 1); } if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { pkt_dev->svlan_id = prandom_u32() & (4096 - 1); } if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { if (pkt_dev->flags & F_UDPSRC_RND) pkt_dev->cur_udp_src = prandom_u32() % (pkt_dev->udp_src_max - pkt_dev->udp_src_min) + pkt_dev->udp_src_min; else { pkt_dev->cur_udp_src++; if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) pkt_dev->cur_udp_src = pkt_dev->udp_src_min; } } if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { if (pkt_dev->flags & F_UDPDST_RND) { pkt_dev->cur_udp_dst = prandom_u32() % (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) + pkt_dev->udp_dst_min; } else { pkt_dev->cur_udp_dst++; if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; } } if (!(pkt_dev->flags & F_IPV6)) { imn = ntohl(pkt_dev->saddr_min); imx = ntohl(pkt_dev->saddr_max); if (imn < imx) { __u32 t; if (pkt_dev->flags & F_IPSRC_RND) t = prandom_u32() % (imx - imn) + imn; else { t = ntohl(pkt_dev->cur_saddr); t++; if (t > imx) t = imn; } pkt_dev->cur_saddr = htonl(t); } if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; } else { imn = ntohl(pkt_dev->daddr_min); imx = ntohl(pkt_dev->daddr_max); if (imn < imx) { __u32 t; __be32 s; if (pkt_dev->flags & F_IPDST_RND) { do { t = prandom_u32() % (imx - imn) + imn; s = htonl(t); } while (ipv4_is_loopback(s) || ipv4_is_multicast(s) || ipv4_is_lbcast(s) || ipv4_is_zeronet(s) || ipv4_is_local_multicast(s)); pkt_dev->cur_daddr = s; } else { t = ntohl(pkt_dev->cur_daddr); t++; if (t > imx) { t = imn; } pkt_dev->cur_daddr = htonl(t); } } if (pkt_dev->cflows) { pkt_dev->flows[flow].flags |= F_INIT; pkt_dev->flows[flow].cur_daddr = pkt_dev->cur_daddr; #ifdef CONFIG_XFRM if (pkt_dev->flags & F_IPSEC_ON) get_ipsec_sa(pkt_dev, flow); #endif pkt_dev->nflows++; } } } else { /* IPV6 * */ if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { int i; /* Only random destinations yet */ for (i = 0; i < 4; i++) { pkt_dev->cur_in6_daddr.s6_addr32[i] = (((__force __be32)prandom_u32() | pkt_dev->min_in6_daddr.s6_addr32[i]) & pkt_dev->max_in6_daddr.s6_addr32[i]); } } } if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { __u32 t; if (pkt_dev->flags & F_TXSIZE_RND) { t = prandom_u32() % (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) + pkt_dev->min_pkt_size; } else { t = pkt_dev->cur_pkt_size + 1; if (t > pkt_dev->max_pkt_size) t = pkt_dev->min_pkt_size; } pkt_dev->cur_pkt_size = t; } set_cur_queue_map(pkt_dev); pkt_dev->flows[flow].count++; }

Contributors

PersonTokensPropCommitsCommitProp
Lucio Maciel57647.14%15.26%
Robert Olsson37030.28%315.79%
Steven Whitehouse806.55%15.26%
Jamal Hadi Salim695.65%210.53%
Francesco Fondelli544.42%15.26%
Al Viro252.05%15.26%
Stephen Hemminger171.39%210.53%
Akinobu Mita161.31%210.53%
Joe Perches90.74%210.53%
David S. Miller30.25%15.26%
Luiz Fernando N. Capitulino10.08%15.26%
Eric Dumazet10.08%15.26%
Jan Engelhardt10.08%15.26%
Total1222100.00%19100.00%

#ifdef CONFIG_XFRM static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ };
static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) { struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; int err = 0; struct net *net = dev_net(pkt_dev->odev); if (!x) return 0; /* XXX: we dont support tunnel mode for now until * we resolve the dst issue */ if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) return 0; /* But when user specify an valid SPI, transformation * supports both transport/tunnel mode + ESP/AH type. */ if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF; rcu_read_lock_bh(); err = x->outer_mode->output(x, skb); rcu_read_unlock_bh(); if (err) { XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); goto error; } err = x->type->output(x, skb); if (err) { XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); goto error; } spin_lock_bh(&x->lock); x->curlft.bytes += skb->len; x->curlft.packets++; spin_unlock_bh(&x->lock); error: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim11050.23%116.67%
Fan Du9342.47%350.00%
Steven Whitehouse156.85%116.67%
Herbert Xu10.46%116.67%
Total219100.00%6100.00%


static void free_SAs(struct pktgen_dev *pkt_dev) { if (pkt_dev->cflows) { /* let go of the SAs if we have them */ int i; for (i = 0; i < pkt_dev->cflows; i++) { struct xfrm_state *x = pkt_dev->flows[i].x; if (x) { xfrm_state_put(x); pkt_dev->flows[i].x = NULL; } } } }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim7294.74%133.33%
Paul Gortmaker33.95%133.33%
Florian Westphal11.32%133.33%
Total76100.00%3100.00%


static int process_ipsec(struct pktgen_dev *pkt_dev, struct sk_buff *skb, __be16 protocol) { if (pkt_dev->flags & F_IPSEC_ON) { struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; int nhead = 0; if (x) { struct ethhdr *eth; struct iphdr *iph; int ret; nhead = x->props.header_len - skb_headroom(skb); if (nhead > 0) { ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); if (ret < 0) { pr_err("Error expanding ipsec packet %d\n", ret); goto err; } } /* ipsec is not expecting ll header */ skb_pull(skb, ETH_HLEN); ret = pktgen_output_ipsec(skb, pkt_dev); if (ret) { pr_err("Error creating ipsec packet %d\n", ret); goto err; } /* restore ll */ eth = (struct ethhdr *)skb_push(skb, ETH_HLEN); memcpy(eth, pkt_dev->hh, 2 * ETH_ALEN); eth->h_proto = protocol; /* Update IPv4 header len as well as checksum value */ iph = ip_hdr(skb); iph->tot_len = htons(skb->len - ETH_HLEN); ip_send_check(iph); } } return 1; err: kfree_skb(skb); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim16472.25%120.00%
Fan Du3113.66%120.00%
Ilpo Järvinen167.05%120.00%
Eric Dumazet125.29%120.00%
Joe Perches41.76%120.00%
Total227100.00%5100.00%

#endif
static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) { unsigned int i; for (i = 0; i < pkt_dev->nr_labels; i++) *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; mpls--; *mpls |= MPLS_STACK_BOTTOM; }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim5598.21%150.00%
Eric Dumazet11.79%150.00%
Total56100.00%2100.00%


static inline __be16 build_tci(unsigned int id, unsigned int cfi, unsigned int prio) { return htons(id | (cfi << 12) | (prio << 13)); }

Contributors

PersonTokensPropCommitsCommitProp
Al Viro3081.08%150.00%
Jamal Hadi Salim718.92%150.00%
Total37100.00%2100.00%


static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, int datalen) { struct timeval timestamp; struct pktgen_hdr *pgh; pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); datalen -= sizeof(*pgh); if (pkt_dev->nfrags <= 0) { memset(skb_put(skb, datalen), 0, datalen); } else { int frags = pkt_dev->nfrags; int i, len; int frag_len; if (frags > MAX_SKB_FRAGS) frags = MAX_SKB_FRAGS; len = datalen - frags * PAGE_SIZE; if (len > 0) { memset(skb_put(skb, len), 0, len); datalen = frags * PAGE_SIZE; } i = 0; frag_len = (datalen/frags) < PAGE_SIZE ? (datalen/frags) : PAGE_SIZE; while (datalen > 0) { if (unlikely(!pkt_dev->page)) { int node = numa_node_id(); if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) node = pkt_dev->node; pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!pkt_dev->page) break; } get_page(pkt_dev->page); skb_frag_set_page(skb, i, pkt_dev->page); skb_shinfo(skb)->frags[i].page_offset = 0; /*last fragment, fill rest of data*/ if (i == (frags - 1)) skb_frag_size_set(&skb_shinfo(skb)->frags[i], (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); else skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); i++; skb_shinfo(skb)->nr_frags = i; } } /* Stamp the time, and sequence number, * convert them to network byte order */ pgh->pgh_magic = htonl(PKTGEN_MAGIC); pgh->seq_num = htonl(pkt_dev->seq_num); if (pkt_dev->flags & F_NO_TIMESTAMP) { pgh->tv_sec = 0; pgh->tv_usec = 0; } else { do_gettimeofday(&timestamp); pgh->tv_sec = htonl(timestamp.tv_sec); pgh->tv_usec = htonl(timestamp.tv_usec); } }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet25656.02%211.76%
Robert Olsson5311.60%211.76%
Francesco Fondelli449.63%15.88%
Amit Kumar Salecha347.44%15.88%
Jesper Dangaard Brouer255.47%15.88%
Steven Whitehouse143.06%15.88%
Lucio Maciel112.41%15.88%
Ian Campbell102.19%211.76%
Arnaldo Carvalho de Melo40.88%211.76%
Al Viro20.44%15.88%
Daniel Turull20.44%15.88%
David S. Miller10.22%15.88%
Junchang Wang10.22%15.88%
Total457100.00%17100.00%


static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, struct pktgen_dev *pkt_dev) { unsigned int extralen = LL_RESERVED_SPACE(dev); struct sk_buff *skb = NULL; unsigned int size; size = pkt_dev->cur_pkt_size + 64 + extralen + pkt_dev->pkt_overhead; if (pkt_dev->flags & F_NODE) { int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); if (likely(skb)) { skb_reserve(skb, NET_SKB_PAD); skb->dev = dev; } } else { skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); } /* the caller pre-fetches from skb->data and reserves for the mac hdr */ if (likely(skb)) skb_reserve(skb, extralen - 16); return skb; }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Borkmann12080.54%125.00%
Paolo Abeni1610.74%125.00%
John Fastabend74.70%125.00%
Bogdan Hamciuc64.03%125.00%
Total149100.00%4100.00%


static struct sk_buff *fill_packet_ipv4(struct net_device *odev, struct pktgen_dev *pkt_dev) { struct sk_buff *skb = NULL; __u8 *eth; struct udphdr *udph; int datalen, iplen; struct iphdr *iph; __be16 protocol = htons(ETH_P_IP); __be32 *mpls; __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ u16 queue_map; if (pkt_dev->nr_labels) protocol = htons(ETH_P_MPLS_UC); if (pkt_dev->vlan_id != 0xffff) protocol = htons(ETH_P_8021Q); /* Update any of the values, used when we're incrementing various * fields. */ mod_cur_headers(pkt_dev); queue_map = pkt_dev->cur_queue_map; skb = pktgen_alloc_skb(odev, pkt_dev); if (!skb) { sprintf(pkt_dev->result, "No memory"); return NULL; } prefetchw(skb->data); skb_reserve(skb, 16); /* Reserve for ethernet and IP header */ eth = (__u8 *) skb_push(skb, 14); mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); if (pkt_dev->nr_labels) mpls_push(mpls, pkt_dev); if (pkt_dev->vlan_id != 0xffff) { if (pkt_dev->svlan_id != 0xffff) { svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); *svlan_tci = build_tci(pkt_dev->svlan_id, pkt_dev->svlan_cfi, pkt_dev->svlan_p); svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); *svlan_encapsulated_proto = htons(ETH_P_8021Q); } vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); *vlan_tci = build_tci(pkt_dev->vlan_id, pkt_dev->vlan_cfi, pkt_dev->vlan_p); vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); *vlan_encapsulated_proto = htons(ETH_P_IP); } skb_reset_mac_header(skb); skb_set_network_header(skb, skb->len); iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr)); skb_set_transport_header(skb, skb->len); udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); skb_set_queue_mapping(skb, queue_map); skb->priority = pkt_dev->skb_priority; memcpy(eth, pkt_dev->hh, 12); *(__be16 *) & eth[12] = protocol; /* Eth + IPh + UDPh + mpls */ datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - pkt_dev->pkt_overhead; if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) datalen = sizeof(struct pktgen_hdr); udph->source = htons(pkt_dev->cur_udp_src); udph->dest = htons(pkt_dev->cur_udp_dst); udph->len = htons(datalen + 8); /* DATA + udphdr */ udph->check = 0; iph->ihl = 5; iph->version = 4; iph->ttl = 32; iph->tos = pkt_dev->tos; iph->protocol = IPPROTO_UDP; /* UDP */ iph->saddr = pkt_dev->cur_saddr; iph->daddr = pkt_dev->cur_daddr; iph->id = htons(pkt_dev->ip_id); pkt_dev->ip_id++; iph->frag_off = 0; iplen = 20 + 8 + datalen; iph->tot_len = htons(iplen); ip_send_check(iph); skb->protocol = protocol; skb->dev = odev; skb->pkt_type = PACKET_HOST; pktgen_finalize_skb(pkt_dev, skb, datalen); if (!(pkt_dev->flags & F_UDPCSUM)) { skb->ip_summed = CHECKSUM_NONE; } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM)) { skb->ip_summed = CHECKSUM_PARTIAL; skb->csum = 0; udp4_hwcsum(skb, iph->saddr, iph->daddr); } else { __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0); /* add protocol-dependent pseudo-header */ udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, datalen + 8, IPPROTO_UDP, csum); if (udph->check == 0) udph->check = CSUM_MANGLED_0; } #ifdef CONFIG_XFRM if (!process_ipsec(pkt_dev, skb, protocol)) return NULL; #endif return skb; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet46658.91%211.76%
Thomas Graf12415.68%317.65%
Robert Olsson769.61%15.88%
Lucio Maciel536.70%15.88%
Sabrina Dubroca293.67%15.88%
Jamal Hadi Salim202.53%15.88%
Simon Horman81.01%15.88%
Tom Herbert50.63%15.88%
Nishank Trivedi40.51%15.88%
Francesco Fondelli20.25%15.88%
Zhang Shengju10.13%15.88%
Daniel Borkmann10.13%15.88%
Paolo Abeni10.13%15.88%
Arnaldo Carvalho de Melo10.13%15.88%
Total791100.00%17100.00%


static struct sk_buff *fill_packet_ipv6(struct net_device *odev, struct pktgen_dev *pkt_dev) { struct sk_buff *skb = NULL; __u8 *eth; struct udphdr *udph; int datalen, udplen; struct ipv6hdr *iph; __be16 protocol = htons(ETH_P_IPV6); __be32 *mpls; __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ u16 queue_map; if (pkt_dev->nr_labels) protocol = htons(ETH_P_MPLS_UC); if (pkt_dev->vlan_id != 0xffff) protocol = htons(ETH_P_8021Q); /* Update any of the values, used when we're incrementing various * fields. */ mod_cur_headers(pkt_dev); queue_map = pkt_dev->cur_queue_map; skb = pktgen_alloc_skb(odev, pkt_dev); if (!skb) { sprintf(pkt_dev->result, "No memory"); return NULL; } prefetchw(skb->data); skb_reserve(skb, 16); /* Reserve for ethernet and IP header */ eth = (__u8 *) skb_push(skb, 14); mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); if (pkt_dev->nr_labels) mpls_push(mpls, pkt_dev); if (pkt_dev->vlan_id != 0xffff) { if (pkt_dev->svlan_id != 0xffff) { svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); *svlan_tci = build_tci(pkt_dev->svlan_id, pkt_dev->svlan_cfi, pkt_dev->svlan_p); svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); *svlan_encapsulated_proto = htons(ETH_P_8021Q); } vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); *vlan_tci = build_tci(pkt_dev->vlan_id, pkt_dev->vlan_cfi, pkt_dev->vlan_p); vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); *vlan_encapsulated_proto = htons(ETH_P_IPV6); } skb_reset_mac_header(skb); skb_set_network_header(skb, skb->len); iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr)); skb_set_transport_header(skb, skb->len); udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); skb_set_queue_mapping(skb, queue_map); skb->priority = pkt_dev->skb_priority; memcpy(eth, pkt_dev->hh, 12); *(__be16 *) &eth[12] = protocol; /* Eth + IPh + UDPh + mpls */ datalen = pkt_dev->cur_pkt_size - 14 - sizeof(struct ipv6hdr) - sizeof(struct udphdr) - pkt_dev->pkt_overhead; if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { datalen = sizeof(struct pktgen_hdr); net_info_ratelimited("increased datalen to %d\n", datalen); } udplen = datalen + sizeof(struct udphdr); udph->source = htons(pkt_dev->cur_udp_src); udph->dest = htons(pkt_dev->cur_udp_dst); udph->len = htons(udplen); udph->check = 0; *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ if (pkt_dev->traffic_class) { /* Version + traffic class + flow (0) */ *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); } iph->hop_limit = 32; iph->payload_len = htons(udplen); iph->nexthdr = IPPROTO_UDP; iph->daddr = pkt_dev->cur_in6_daddr; iph->saddr = pkt_dev->cur_in6_saddr; skb->protocol = protocol; skb->dev = odev; skb->pkt_type = PACKET_HOST; pktgen_finalize_skb(pkt_dev, skb, datalen); if (!(pkt_dev->flags & F_UDPCSUM)) { skb->ip_summed = CHECKSUM_NONE; } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IPV6_CSUM)) { skb->ip_summed = CHECKSUM_PARTIAL; skb->csum_start = skb_transport_header(skb) - skb->head; skb->csum_offset = offsetof(struct udphdr, check); udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); } else { __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0); /* add protocol-dependent pseudo-header */ udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); if (udph->check == 0) udph->check = CSUM_MANGLED_0; } return skb; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet35343.63%14.17%
Thomas Graf17521.63%28.33%
Robert Olsson12315.20%28.33%
Lucio Maciel668.16%14.17%
Francesco Fondelli232.84%28.33%
Sabrina Dubroca192.35%14.17%
Steven Whitehouse111.36%14.17%
Simon Horman80.99%14.17%
Arnaldo Carvalho de Melo60.74%14.17%
Tom Herbert50.62%14.17%
Américo Wang40.49%14.17%
John Fastabend40.49%14.17%
Alexey Dobriyan20.25%14.17%
Kambo Lohan20.25%14.17%
Stephen Hemminger20.25%14.17%
David S. Miller10.12%14.17%
Daniel Borkmann10.12%14.17%
Zhang Shengju10.12%14.17%
Al Viro10.12%14.17%
Joe Perches10.12%14.17%
Andi Kleen10.12%14.17%
Total809100.00%24100.00%


static struct sk_buff *fill_packet(struct net_device *odev, struct pktgen_dev *pkt_dev) { if (pkt_dev->flags & F_IPV6) return fill_packet_ipv6(odev, pkt_dev); else return fill_packet_ipv4(odev, pkt_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson3376.74%150.00%
Lucio Maciel1023.26%150.00%
Total43100.00%2100.00%


static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) { pkt_dev->seq_num = 1; pkt_dev->idle_acc = 0; pkt_dev->sofar = 0; pkt_dev->tx_bytes = 0; pkt_dev->errors = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson4097.56%150.00%
Lucio Maciel12.44%150.00%
Total41100.00%2100.00%

/* Set up structure for sending pkts, clear counters */
static void pktgen_run(struct pktgen_thread *t) { struct pktgen_dev *pkt_dev; int started = 0; func_enter(); rcu_read_lock(); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { /* * setup odev and create initial packet. */ pktgen_setup_inject(pkt_dev); if (pkt_dev->odev) { pktgen_clear_counters(pkt_dev); pkt_dev->skb = NULL; pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); set_pkt_overhead(pkt_dev); strcpy(pkt_dev->result, "Starting"); pkt_dev->running = 1; /* Cranke yeself! */ started++; } else strcpy(pkt_dev->result, "Error starting"); } rcu_read_unlock(); if (started) t->control &= ~(T_STOP); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson5746.34%112.50%
Lucio Maciel3830.89%112.50%
Jesper Dangaard Brouer129.76%112.50%
Luiz Fernando N. Capitulino75.69%112.50%
Jamal Hadi Salim54.07%112.50%
Joe Perches21.63%112.50%
Stephen Hemminger10.81%112.50%
Daniel Borkmann10.81%112.50%
Total123100.00%8100.00%


static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) { struct pktgen_thread *t; func_enter(); mutex_lock(&pktgen_thread_lock); list_for_each_entry(t, &pn->pktgen_threads, th_list) t->control |= T_STOP; mutex_unlock(&pktgen_thread_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Luiz Fernando N. Capitulino1737.78%228.57%
Robert Olsson1124.44%114.29%
Lucio Maciel613.33%114.29%
Américo Wang511.11%114.29%
Arthur Kepner48.89%114.29%
Joe Perches24.44%114.29%
Total45100.00%7100.00%


static int thread_is_running(const struct pktgen_thread *t) { const struct pktgen_dev *pkt_dev; rcu_read_lock(); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) if (pkt_dev->running) { rcu_read_unlock(); return 1; } rcu_read_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jesper Dangaard Brouer1224.49%116.67%
Robert Olsson1224.49%233.33%
Lucio Maciel1122.45%116.67%
Luiz Fernando N. Capitulino918.37%116.67%
Stephen Hemminger510.20%116.67%
Total49100.00%6100.00%


static int pktgen_wait_thread_run(struct pktgen_thread *t) { while (thread_is_running(t)) { msleep_interruptible(100); if (signal_pending(current)) goto signal; } return 1; signal: return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson2660.47%375.00%
Lucio Maciel1739.53%125.00%
Total43100.00%4100.00%


static int pktgen_wait_all_threads_run(struct pktgen_net *pn) { struct pktgen_thread *t; int sig = 1; mutex_lock(&pktgen_thread_lock); list_for_each_entry(t, &pn->pktgen_threads, th_list) { sig = pktgen_wait_thread_run(t); if (sig == 0) break; } if (sig == 0) list_for_each_entry(t, &pn->pktgen_threads, th_list) t->control |= (T_STOP); mutex_unlock(&pktgen_thread_lock); return sig; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson3441.46%120.00%
Luiz Fernando N. Capitulino2530.49%240.00%
Lucio Maciel1720.73%120.00%
Américo Wang67.32%120.00%
Total82100.00%5100.00%


static void pktgen_run_all_threads(struct pktgen_net *pn) { struct pktgen_thread *t; func_enter(); mutex_lock(&pktgen_thread_lock); list_for_each_entry(t, &pn->pktgen_threads, th_list) t->control |= (T_RUN); mutex_unlock(&pktgen_thread_lock); /* Propagate thread->control */ schedule_timeout_interruptible(msecs_to_jiffies(125)); pktgen_wait_all_threads_run(pn); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson2439.34%112.50%
Luiz Fernando N. Capitulino1727.87%225.00%
Américo Wang813.11%112.50%
Nishanth Aravamudan58.20%112.50%
Lucio Maciel46.56%112.50%
Joe Perches23.28%112.50%
Stephen Hemminger11.64%112.50%
Total61100.00%8100.00%


static void pktgen_reset_all_threads(struct pktgen_net *pn) { struct pktgen_thread *t; func_enter(); mutex_lock(&pktgen_thread_lock); list_for_each_entry(t, &pn->pktgen_threads, th_list) t->control |= (T_REMDEVALL); mutex_unlock(&pktgen_thread_lock); /* Propagate thread->control */ schedule_timeout_interruptible(msecs_to_jiffies(125)); pktgen_wait_all_threads_run(pn); }

Contributors

PersonTokensPropCommitsCommitProp
Jesse Brandeburg5081.97%125.00%
Américo Wang813.11%125.00%
Joe Perches23.28%125.00%
Stephen Hemminger11.64%125.00%
Total61100.00%4100.00%


static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) { __u64 bps, mbps, pps; char *p = pkt_dev->result; ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, pkt_dev->started_at); ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", (unsigned long long)ktime_to_us(elapsed), (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), (unsigned long long)ktime_to_us(idle), (unsigned long long)pkt_dev->sofar, pkt_dev->cur_pkt_size, nr_frags); pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, ktime_to_ns(elapsed)); bps = pps * 8 * pkt_dev->cur_pkt_size; mbps = bps; do_div(mbps, 1000000); p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", (unsigned long long)pps, (unsigned long long)mbps, (unsigned long long)bps, (unsigned long long)pkt_dev->errors); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson12868.09%125.00%
Stephen Hemminger3619.15%125.00%
Lucio Maciel2312.23%125.00%
Daniel Turull10.53%125.00%
Total188100.00%4100.00%

/* Set stopped-at timer, remove from running list, do counters & statistics */
static int pktgen_stop_device(struct pktgen_dev *pkt_dev) { int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; if (!pkt_dev->running) { pr_warn("interface: %s is already stopped\n", pkt_dev->odevname); return -EINVAL; } pkt_dev->running = 0; kfree_skb(pkt_dev->skb); pkt_dev->skb = NULL; pkt_dev->stopped_at = ktime_get(); show_results(pkt_dev, nr_frags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson2629.55%111.11%
Lucio Maciel2022.73%111.11%
Arthur Kepner1921.59%111.11%
Stephen Hemminger1314.77%111.11%
Jesper Dangaard Brouer66.82%111.11%
Joe Perches22.27%222.22%
Eric Dumazet11.14%111.11%
Daniel Borkmann11.14%111.11%
Total88100.00%9100.00%


static struct pktgen_dev *next_to_run(struct pktgen_thread *t) { struct pktgen_dev *pkt_dev, *best = NULL; rcu_read_lock(); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { if (!pkt_dev->running) continue; if (best == NULL) best = pkt_dev; else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) best = pkt_dev; } rcu_read_unlock(); return best; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson4050.00%116.67%
Lucio Maciel1518.75%116.67%
Luiz Fernando N. Capitulino1215.00%116.67%
Stephen Hemminger56.25%116.67%
Jesper Dangaard Brouer56.25%116.67%
Daniel Borkmann33.75%116.67%
Total80100.00%6100.00%


static void pktgen_stop(struct pktgen_thread *t) { struct pktgen_dev *pkt_dev; func_enter(); rcu_read_lock(); list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { pktgen_stop_device(pkt_dev); } rcu_read_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson2050.00%120.00%
Luiz Fernando N. Capitulino922.50%120.00%
Jesper Dangaard Brouer512.50%120.00%
Arthur Kepner410.00%120.00%
Joe Perches25.00%120.00%
Total40100.00%5100.00%

/* * one of our devices needs to be removed - find it * and remove it */
static void pktgen_rem_one_if(struct pktgen_thread *t) { struct list_head *q, *n; struct pktgen_dev *cur; func_enter(); list_for_each_safe(q, n, &t->if_list) { cur = list_entry(q, struct pktgen_dev, list); if (!cur->removal_mark) continue; kfree_skb(cur->skb); cur->skb = NULL; pktgen_remove_device(t, cur); break; } }

Contributors

PersonTokensPropCommitsCommitProp
Arthur Kepner4962.82%125.00%
Luiz Fernando N. Capitulino2633.33%125.00%
Joe Perches22.56%125.00%
Robert Olsson11.28%125.00%
Total78100.00%4100.00%


static void pktgen_rem_all_ifs(struct pktgen_thread *t) { struct list_head *q, *n; struct pktgen_dev *cur; func_enter(); /* Remove all devices, free mem */ list_for_each_safe(q, n, &t->if_list) { cur = list_entry(q, struct pktgen_dev, list); kfree_skb(cur->skb); cur->skb = NULL; pktgen_remove_device(t, cur); } }

Contributors

PersonTokensPropCommitsCommitProp
Luiz Fernando N. Capitulino2637.14%120.00%
Robert Olsson2332.86%120.00%
Arthur Kepner1420.00%120.00%
Lucio Maciel45.71%120.00%
Joe Perches34.29%120.00%
Total70100.00%5100.00%


static void pktgen_rem_thread(struct pktgen_thread *t) { /* Remove from the thread list */ remove_proc_entry(t->tsk->comm, t->net->proc_dir); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson1555.56%125.00%
Américo Wang518.52%125.00%
Lucio Maciel414.81%125.00%
David S. Miller311.11%125.00%
Total27100.00%4100.00%


static void pktgen_resched(struct pktgen_dev *pkt_dev) { ktime_t idle_start = ktime_get(); schedule(); pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger3394.29%266.67%
Daniel Borkmann25.71%133.33%
Total35100.00%3100.00%


static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) { ktime_t idle_start = ktime_get(); while (atomic_read(&(pkt_dev->skb->users)) != 1) { if (signal_pending(current)) break; if (need_resched()) pktgen_resched(pkt_dev); else cpu_relax(); } pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger7097.22%375.00%
Daniel Borkmann22.78%125.00%
Total72100.00%4100.00%


static void pktgen_xmit(struct pktgen_dev *pkt_dev) { unsigned int burst = ACCESS_ONCE(pkt_dev->burst); struct net_device *odev = pkt_dev->odev; struct netdev_queue *txq; struct sk_buff *skb; int ret; /* If device is offline, then don't send */ if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { pktgen_stop_device(pkt_dev); return; } /* This is max DELAY, this has special meaning of * "never transmit" */ if (unlikely(pkt_dev->delay == ULLONG_MAX)) { pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); return; } /* If no skb or clone count exhausted then get new one */ if (!pkt_dev->skb || (pkt_dev->last_ok && ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { /* build a new pkt */ kfree_skb(pkt_dev->skb); pkt_dev->skb = fill_packet(odev, pkt_dev); if (pkt_dev->skb == NULL) { pr_err("ERROR: couldn't allocate skb in fill_packet\n"); schedule(); pkt_dev->clone_count--; /* back out increment, OOM */ return; } pkt_dev->last_pkt_size = pkt_dev->skb->len; pkt_dev->clone_count = 0; /* reset counter */ } if (pkt_dev->delay && pkt_dev->last_ok) spin(pkt_dev, pkt_dev->next_tx); if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) { skb = pkt_dev->skb; skb->protocol = eth_type_trans(skb, skb->dev); atomic_add(burst, &skb->users); local_bh_disable(); do { ret = netif_receive_skb(skb); if (ret == NET_RX_DROP) pkt_dev->errors++; pkt_dev->sofar++; pkt_dev->seq_num++; if (atomic_read(&skb->users) != burst) { /* skb was queued by rps/rfs or taps, * so cannot reuse this skb */ atomic_sub(burst - 1, &skb->users); /* get out of the loop and wait * until skb is consumed */ break; } /* skb was 'freed' by stack, so clean few * bits and reuse it */ skb_reset_tc(skb); } while (--burst > 0); goto out; /* Skips xmit_mode M_START_XMIT */ } else if (pkt_dev->xmit_mode == M_QUEUE_XMIT) { local_bh_disable(); atomic_inc(&pkt_dev->skb->users); ret = dev_queue_xmit(pkt_dev->skb); switch (ret) { case NET_XMIT_SUCCESS: pkt_dev->sofar++; pkt_dev->seq_num++; pkt_dev->tx_bytes += pkt_dev->last_pkt_size; break; case NET_XMIT_DROP: case NET_XMIT_CN: /* These are all valid return codes for a qdisc but * indicate packets are being dropped or will likely * be dropped soon. */ case NETDEV_TX_BUSY: /* qdisc may call dev_hard_start_xmit directly in cases * where no queues exist e.g. loopback device, virtual * devices, etc. In this case we need to handle * NETDEV_TX_ codes. */ default: pkt_dev->errors++; net_info_ratelimited("%s xmit error: %d\n", pkt_dev->odevname, ret); break; } goto out; } txq = skb_get_tx_queue(odev, pkt_dev->skb); local_bh_disable(); HARD_TX_LOCK(odev, txq, smp_processor_id()); if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { ret = NETDEV_TX_BUSY; pkt_dev->last_ok = 0; goto unlock; } atomic_add(burst, &pkt_dev->skb->users); xmit_more: ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0); switch (ret) { case NETDEV_TX_OK: pkt_dev->last_ok = 1; pkt_dev->sofar++; pkt_dev->seq_num++; pkt_dev->tx_bytes += pkt_dev->last_pkt_size; if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq)) goto xmit_more; break; case NET_XMIT_DROP: case NET_XMIT_CN: /* skb has been consumed */ pkt_dev->errors++; break; default: /* Drivers are not supposed to return other values! */ net_info_ratelimited("%s xmit error: %d\n", pkt_dev->odevname, ret); pkt_dev->errors++; /* fallthru */ case NETDEV_TX_BUSY: /* Retry it next time */ atomic_dec(&(pkt_dev->skb->users)); pkt_dev->last_ok = 0; } if (unlikely(burst)) atomic_sub(burst, &pkt_dev->skb->users); unlock: HARD_TX_UNLOCK(odev, txq); out: local_bh_enable(); /* If pkt_dev->count is zero, then run forever */ if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { pktgen_wait_for_skb(pkt_dev); /* Done with this */ pktgen_stop_device(pkt_dev); } }

Contributors

PersonTokensPropCommitsCommitProp
Alexei Starovoitov17826.73%26.67%
Robert Olsson13820.72%26.67%
John Fastabend10615.92%26.67%
Stephen Hemminger9914.86%723.33%
Lucio Maciel598.86%13.33%
Eric Dumazet355.26%310.00%
David S. Miller233.45%516.67%
Daniel Borkmann213.15%413.33%
Joe Perches40.60%310.00%
Willem de Bruijn30.45%13.33%
Total666100.00%30100.00%

/* * Main loop of the thread goes here */
static int pktgen_thread_worker(void *arg) { DEFINE_WAIT(wait); struct pktgen_thread *t = arg; struct pktgen_dev *pkt_dev = NULL; int cpu = t->cpu; BUG_ON(smp_processor_id() != cpu); init_waitqueue_head(&t->queue); complete(&t->start_done); pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); set_freezable(); while (!kthread_should_stop()) { pkt_dev = next_to_run(t); if (unlikely(!pkt_dev && t->control == 0)) { if (t->net->pktgen_exiting) break; wait_event_interruptible_timeout(t->queue, t->control != 0, HZ/10); try_to_freeze(); continue; } if (likely(pkt_dev)) { pktgen_xmit(pkt_dev); if (need_resched()) pktgen_resched(pkt_dev); else cpu_relax(); } if (t->control & T_STOP) { pktgen_stop(t); t->control &= ~(T_STOP); } if (t->control & T_RUN) { pktgen_run(t); t->control &= ~(T_RUN); } if (t->control & T_REMDEVALL) { pktgen_rem_all_ifs(t); t->control &= ~(T_REMDEVALL); } if (t->control & T_REMDEV) { pktgen_rem_one_if(t); t->control &= ~(T_REMDEV); } try_to_freeze(); } pr_debug("%s stopping all device\n", t->tsk->comm); pktgen_stop(t); pr_debug("%s removing all device\n", t->tsk->comm); pktgen_rem_all_ifs(t); pr_debug("%s removing thread\n", t->tsk->comm); pktgen_rem_thread(t); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson13442.68%211.76%
Lucio Maciel4815.29%15.88%
David S. Miller3812.10%15.88%
Stephen Hemminger3310.51%211.76%
Arthur Kepner257.96%15.88%
Denis V. Lunev82.55%15.88%
Rafael J. Wysocki61.91%211.76%
Eric Dumazet51.59%15.88%
Américo Wang41.27%15.88%
Joe Perches41.27%15.88%
Andrew Morton30.96%15.88%
Pavel Emelyanov30.96%15.88%
Randy Dunlap20.64%15.88%
Jesper Dangaard Brouer10.32%15.88%
Total314100.00%17100.00%


static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, const char *ifname, bool exact) { struct pktgen_dev *p, *pkt_dev = NULL; size_t len = strlen(ifname); rcu_read_lock(); list_for_each_entry_rcu(p, &t->if_list, list) if (strncmp(p->odevname, ifname, len) == 0) { if (p->odevname[len]) { if (exact || p->odevname[len] != '@') continue; } pkt_dev = p; break; } rcu_read_unlock(); pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); return pkt_dev; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet3833.93%218.18%
Robert Olsson3632.14%218.18%
Luiz Fernando N. Capitulino1513.39%19.09%
Lucio Maciel1210.71%19.09%
Jesper Dangaard Brouer54.46%19.09%
Stephen Hemminger32.68%218.18%
Randy Dunlap21.79%19.09%
Joe Perches10.89%19.09%
Total112100.00%11100.00%

/* * Adds a dev at front of if_list. */
static int add_dev_to_thread(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) { int rv = 0; /* This function cannot be called concurrently, as its called * under pktgen_thread_lock mutex, but it can run from * userspace on another CPU than the kthread. The if_lock() * is used here to sync with concurrent instances of * _rem_dev_from_if_list() invoked via kthread, which is also * updating the if_list */ if_lock(t); if (pkt_dev->pg_thread) { pr_err("ERROR: already assigned to a thread\n"); rv = -EBUSY; goto out; } pkt_dev->running = 0; pkt_dev->pg_thread = t; list_add_rcu(&pkt_dev->list, &t->if_list); out: if_unlock(t); return rv; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson5465.06%240.00%
Jesper Dangaard Brouer1416.87%120.00%
Lucio Maciel1315.66%120.00%
Joe Perches22.41%120.00%
Total83100.00%5100.00%

/* Called under thread lock */
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) { struct pktgen_dev *pkt_dev; int err; int node = cpu_to_node(t->cpu); /* We don't allow a device to be on several threads */ pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); if (pkt_dev) { pr_err("ERROR: interface already used\n"); return -EBUSY; } pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); if (!pkt_dev) return -ENOMEM; strcpy(pkt_dev->odevname, ifname); pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), node); if (pkt_dev->flows == NULL) { kfree(pkt_dev); return -ENOMEM; } pkt_dev->removal_mark = 0; pkt_dev->nfrags = 0; pkt_dev->delay = pg_delay_d; pkt_dev->count = pg_count_d; pkt_dev->sofar = 0; pkt_dev->udp_src_min = 9; /* sink port */ pkt_dev->udp_src_max = 9; pkt_dev->udp_dst_min = 9; pkt_dev->udp_dst_max = 9; pkt_dev->vlan_p = 0; pkt_dev->vlan_cfi = 0; pkt_dev->vlan_id = 0xffff; pkt_dev->svlan_p = 0; pkt_dev->svlan_cfi = 0; pkt_dev->svlan_id = 0xffff; pkt_dev->burst = 1; pkt_dev->node = -1; err = pktgen_setup_dev(t->net, pkt_dev, ifname); if (err) goto out1; if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) pkt_dev->clone_skb = pg_clone_skb_d; pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, &pktgen_if_fops, pkt_dev); if (!pkt_dev->entry) { pr_err("cannot create %s/%s procfs entry\n", PG_PROC_DIR, ifname); err = -EINVAL; goto out2; } #ifdef CONFIG_XFRM pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; pkt_dev->ipsproto = IPPROTO_ESP; /* xfrm tunnel mode needs additional dst to extract outter * ip header protocol/ttl/id field, here creat a phony one. * instead of looking for a valid rt, which definitely hurting * performance under such circumstance. */ pkt_dev->dstops.family = AF_INET; pkt_dev->dst.dev = pkt_dev->odev; dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false); pkt_dev->dst.child = &pkt_dev->dst; pkt_dev->dst.ops = &pkt_dev->dstops; #endif return add_dev_to_thread(t, pkt_dev); out2: dev_put(pkt_dev->odev); out1: #ifdef CONFIG_XFRM free_SAs(pkt_dev); #endif vfree(pkt_dev->flows); kfree(pkt_dev); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson12929.72%210.00%
Stephen Hemminger6314.52%315.00%
Fan Du5312.21%15.00%
Lucio Maciel4911.29%15.00%
Francesco Fondelli368.29%15.00%
Jamal Hadi Salim276.22%15.00%
Eric Dumazet245.53%210.00%
Neil Horman163.69%15.00%
Américo Wang143.23%210.00%
Alexei Starovoitov61.38%15.00%
Arthur Kepner61.38%15.00%
Joe Perches40.92%15.00%
Denis V. Lunev30.69%15.00%
Wang Chen30.69%15.00%
Randy Dunlap10.23%15.00%
Total434100.00%20100.00%


static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) { struct pktgen_thread *t; struct proc_dir_entry *pe; struct task_struct *p; t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, cpu_to_node(cpu)); if (!t) { pr_err("ERROR: out of memory, can't create new thread\n"); return -ENOMEM; } mutex_init(&t->if_lock); t->cpu = cpu; INIT_LIST_HEAD(&t->if_list); list_add_tail(&t->th_list, &pn->pktgen_threads); init_completion(&t->start_done); p = kthread_create_on_node(pktgen_thread_worker, t, cpu_to_node(cpu), "kpktgend_%d", cpu); if (IS_ERR(p)) { pr_err("kernel_thread() failed for cpu %d\n", t->cpu); list_del(&t->th_list); kfree(t); return PTR_ERR(p); } kthread_bind(p, cpu); t->tsk = p; pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, &pktgen_thread_fops, t); if (!pe) { pr_err("cannot create %s/%s procfs entry\n", PG_PROC_DIR, t->tsk->comm); kthread_stop(p); list_del(&t->th_list); kfree(t); return -EINVAL; } t->net = pn; get_task_struct(p); wake_up_process(p); wait_for_completion(&t->start_done); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller7427.82%16.25%
Robert Olsson5721.43%16.25%
Lucio Maciel3312.41%16.25%
Luiz Fernando N. Capitulino3312.41%318.75%
Denis V. Lunev197.14%212.50%
Américo Wang176.39%16.25%
Eric Dumazet134.89%318.75%
Stephen Hemminger62.26%16.25%
Joe Perches62.26%16.25%
Oleg Nesterov51.88%16.25%
Wang Chen31.13%16.25%
Total266100.00%16100.00%

/* * Removes a device from the thread if_list. */
static void _rem_dev_from_if_list(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) { struct list_head *q, *n; struct pktgen_dev *p; if_lock(t); list_for_each_safe(q, n, &t->if_list) { p = list_entry(q, struct pktgen_dev, list); if (p == pkt_dev) list_del_rcu(&p->list); } if_unlock(t); }

Contributors

PersonTokensPropCommitsCommitProp
Luiz Fernando N. Capitulino3344.00%125.00%
Robert Olsson2432.00%125.00%
Jesper Dangaard Brouer1114.67%125.00%
Lucio Maciel79.33%125.00%
Total75100.00%4100.00%


static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) { pr_debug("remove_device pkt_dev=%p\n", pkt_dev); if (pkt_dev->running) { pr_warn("WARNING: trying to remove a running interface, stopping it now\n"); pktgen_stop_device(pkt_dev); } /* Dis-associate from the interface */ if (pkt_dev->odev) { dev_put(pkt_dev->odev); pkt_dev->odev = NULL; } /* Remove proc before if_list entry, because add_device uses * list to determine if interface already exist, avoid race * with proc_create_data() */ proc_remove(pkt_dev->entry); /* And update the thread if_list */ _rem_dev_from_if_list(t, pkt_dev); #ifdef CONFIG_XFRM free_SAs(pkt_dev); #endif vfree(pkt_dev->flows); if (pkt_dev->page) put_page(pkt_dev->page); kfree_rcu(pkt_dev, rcu); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson6554.62%110.00%
Eric Dumazet1310.92%110.00%
Lucio Maciel1310.92%110.00%
Jesper Dangaard Brouer1210.08%110.00%
Jamal Hadi Salim108.40%110.00%
Joe Perches32.52%220.00%
Stephen Hemminger21.68%220.00%
David Howells10.84%110.00%
Total119100.00%10100.00%


static int __net_init pg_net_init(struct net *net) { struct pktgen_net *pn = net_generic(net, pg_net_id); struct proc_dir_entry *pe; int cpu, ret = 0; pn->net = net; INIT_LIST_HEAD(&pn->pktgen_threads); pn->pktgen_exiting = false; pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); if (!pn->proc_dir) { pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); return -ENODEV; } pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); if (pe == NULL) { pr_err("cannot create %s procfs entry\n", PGCTRL); ret = -EINVAL; goto remove; } for_each_online_cpu(cpu) { int err; err = pktgen_create_thread(cpu, pn); if (err) pr_warn("Cannot create thread for cpu %d (%d)\n", cpu, err); } if (list_empty(&pn->pktgen_threads)) { pr_err("Initialization failed for all threads\n"); ret = -ENODEV; goto remove_entry; } return 0; remove_entry: remove_proc_entry(PGCTRL, pn->proc_dir); remove: remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Américo Wang10046.30%218.18%
Luiz Fernando N. Capitulino3918.06%19.09%
Lucio Maciel2612.04%19.09%
Stephen Hemminger2511.57%218.18%
Robert Olsson115.09%19.09%
Gao Feng52.31%19.09%
Wang Chen41.85%19.09%
John Hawkes41.85%19.09%
Joe Perches20.93%19.09%
Total216100.00%11100.00%


static void __net_exit pg_net_exit(struct net *net) { struct pktgen_net *pn = net_generic(net, pg_net_id); struct pktgen_thread *t; struct list_head *q, *n; LIST_HEAD(list); /* Stop all interfaces & threads */ pn->pktgen_exiting = true; mutex_lock(&pktgen_thread_lock); list_splice_init(&pn->pktgen_threads, &list); mutex_unlock(&pktgen_thread_lock); list_for_each_safe(q, n, &list) { t = list_entry(q, struct pktgen_thread, th_list); list_del(&t->th_list); kthread_stop(t->tsk); put_task_struct(t->tsk); kfree(t); } remove_proc_entry(PGCTRL, pn->proc_dir); remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet3927.66%325.00%
Luiz Fernando N. Capitulino3121.99%18.33%
Américo Wang2819.86%18.33%
Lucio Maciel1712.06%18.33%
Oleg Nesterov74.96%18.33%
Robert Olsson64.26%216.67%
Gao Feng53.55%18.33%
David S. Miller53.55%18.33%
Stephen Hemminger32.13%18.33%
Total141100.00%12100.00%

static struct pernet_operations pg_net_ops = { .init = pg_net_init, .exit = pg_net_exit, .id = &pg_net_id, .size = sizeof(struct pktgen_net), };
static int __init pg_init(void) { int ret = 0; pr_info("%s", version); ret = register_pernet_subsys(&pg_net_ops); if (ret) return ret; ret = register_netdevice_notifier(&pktgen_notifier_block); if (ret) unregister_pernet_subsys(&pg_net_ops); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Américo Wang57100.00%1100.00%
Total57100.00%1100.00%


static void __exit pg_cleanup(void) { unregister_netdevice_notifier(&pktgen_notifier_block); unregister_pernet_subsys(&pg_net_ops); /* Don't need rcu_barrier() due to use of kfree_rcu() */ }

Contributors

PersonTokensPropCommitsCommitProp
Américo Wang2195.45%150.00%
Jesper Dangaard Brouer14.55%150.00%
Total22100.00%2100.00%

module_init(pg_init); module_exit(pg_cleanup); MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); MODULE_DESCRIPTION("Packet Generator tool"); MODULE_LICENSE("GPL"); MODULE_VERSION(VERSION); module_param(pg_count_d, int, 0); MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); module_param(pg_delay_d, int, 0); MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); module_param(pg_clone_skb_d, int, 0); MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");

Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Olsson775440.51%146.64%
Lucio Maciel15067.87%10.47%
Eric Dumazet13967.29%199.00%
Francesco Fondelli12546.55%20.95%
Stephen Hemminger12006.27%2310.90%
Jamal Hadi Salim9494.96%41.90%
Américo Wang6433.36%94.27%
Steven Whitehouse6223.25%10.47%
Alexei Starovoitov4942.58%31.42%
Thomas Graf3832.00%41.90%
Luiz Fernando N. Capitulino3801.99%73.32%
Fan Du3221.68%83.79%
John Fastabend2591.35%41.90%
David S. Miller2411.26%73.32%
Arthur Kepner2121.11%10.47%
Jesper Dangaard Brouer1870.98%62.84%
Daniel Turull1720.90%41.90%
Daniel Borkmann1590.83%52.37%
Joe Perches1540.80%94.27%
Alexey Dobriyan950.50%62.84%
Jesse Brandeburg890.47%20.95%
Al Viro800.42%41.90%
Andrew Gallatin700.37%10.47%
Sabrina Dubroca480.25%10.47%
Neil Horman410.21%10.47%
Amit Kumar Salecha340.18%10.47%
Denis V. Lunev340.18%20.95%
Mathias Krause260.14%31.42%
Adit Ranadive230.12%10.47%
Paolo Abeni180.09%10.47%
Akinobu Mita180.09%20.95%
Simon Horman160.08%10.47%
Ilpo Järvinen160.08%10.47%
Hideaki Yoshifuji / 吉藤英明140.07%41.90%
Guenter Roeck130.07%10.47%
Oleg Nesterov120.06%10.47%
Nelson Elhage120.06%10.47%
Paul Gortmaker110.06%10.47%
Kris Katterjohn110.06%10.47%
Arnaldo Carvalho de Melo110.06%20.95%
Andy Shevchenko110.06%10.47%
Dan Carpenter100.05%10.47%
Gao Feng100.05%10.47%
Wang Chen100.05%10.47%
Tom Herbert100.05%10.47%
Nishanth Aravamudan100.05%10.47%
Ian Campbell100.05%20.95%
Eric W. Biedermann90.05%31.42%
Randy Dunlap80.04%20.95%
Rafael J. Wysocki60.03%20.95%
Bogdan Hamciuc60.03%10.47%
Andrew Morton60.03%10.47%
Herbert Xu40.02%31.42%
John Hawkes40.02%10.47%
Nishank Trivedi40.02%10.47%
Stephen Rothwell30.02%10.47%
Linus Torvalds30.02%10.47%
Arjan van de Ven30.02%10.47%
Ingo Molnar30.02%10.47%
Pavel Emelyanov30.02%10.47%
Grant Grundler30.02%10.47%
Jiri Pirko30.02%10.47%
Dmitry Torokhov30.02%10.47%
Willem de Bruijn30.02%10.47%
Johannes Berg20.01%10.47%
Kambo Lohan20.01%10.47%
Zhang Shengju20.01%10.47%
David Howells20.01%10.47%
Junchang Wang10.01%10.47%
Jiri Slaby10.01%10.47%
Fengguang Wu10.01%10.47%
Florian Westphal10.01%10.47%
Adrian Bunk10.01%10.47%
Jan Engelhardt10.01%10.47%
Andi Kleen10.01%10.47%
Total19139100.00%211100.00%
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