pktgen.c 90.2 KB
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/*
 * 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>
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 * Jens Låås <jens.laas@data.slu.se>
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 *
 * 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.
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 * The tool is implemented as a linux module.  Parameters are output
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 * 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>
 *
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 * 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
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 * as a "fastpath" with a configurable number of clones after alloc's.
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 * 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
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 * clones.
 *
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 * Also moved to /proc/net/pktgen/
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 * --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)
 *
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 *
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 * 021124 Finished major redesign and rewrite for new functionality.
 * See Documentation/networking/pktgen.txt for how to use this.
 *
 * The new operation:
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 * 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
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 * way. The if_lock should be possible to remove when add/rem_device is merged
 * into this too.
 *
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 * By design there should only be *one* "controlling" process. In practice
 * multiple write accesses gives unpredictable result. Understood by "write"
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 * to /proc gives result code thats should be read be the "writer".
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 * For practical use this should be no problem.
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 *
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 * 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.
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 * --ro
 *
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 * Fix refcount off by one if first packet fails, potential null deref,
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 * 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>
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 *
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 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
 * ia64 compilation fix from  Aron Griffis <aron@hp.com> 040604
 *
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 * New xmit() return, do_div and misc clean up by Stephen Hemminger
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 * <shemminger@osdl.org> 040923
 *
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 * Randy Dunlap fixed u64 printk compiler waring
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 *
 * Remove FCS from BW calculation.  Lennert Buytenhek <buytenh@wantstofly.org>
 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
 *
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 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
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 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
 *
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 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
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 * 050103
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 *
 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
 *
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 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
 *
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 * Fixed src_mac command to set source mac of packet to value specified in
 * command by Adit Ranadive <adit.262@gmail.com>
 *
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 */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/sys.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
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#include <linux/mutex.h>
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#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>
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#include <linux/capability.h>
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#include <linux/hrtimer.h>
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#include <linux/freezer.h>
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#include <linux/delay.h>
#include <linux/timer.h>
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#include <linux/list.h>
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#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>
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#include <linux/if_vlan.h>
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#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/udp.h>
#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/wait.h>
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#include <linux/etherdevice.h>
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#include <linux/kthread.h>
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#include <linux/prefetch.h>
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#include <net/net_namespace.h>
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#include <net/checksum.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
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#ifdef CONFIG_XFRM
#include <net/xfrm.h>
#endif
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#include <net/netns/generic.h>
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#include <asm/byteorder.h>
#include <linux/rcupdate.h>
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#include <linux/bitops.h>
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#include <linux/io.h>
#include <linux/timex.h>
#include <linux/uaccess.h>
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#include <asm/dma.h>
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#include <asm/div64.h>		/* do_div */
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#define VERSION	"2.74"
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#define IP_NAME_SZ 32
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#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
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#define MPLS_STACK_BOTTOM htonl(0x00000100)
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#define func_enter() pr_debug("entering %s\n", __func__);

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/* Device flag bits */
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#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 */
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#define F_MPLS_RND    (1<<8)	/* Random MPLS labels */
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#define F_VID_RND     (1<<9)	/* Random VLAN ID */
#define F_SVID_RND    (1<<10)	/* Random SVLAN ID */
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#define F_FLOW_SEQ    (1<<11)	/* Sequential flows */
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#define F_IPSEC_ON    (1<<12)	/* ipsec on for flows */
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#define F_QUEUE_MAP_RND (1<<13)	/* queue map Random */
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#define F_QUEUE_MAP_CPU (1<<14)	/* queue map mirrors smp_processor_id() */
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#define F_NODE          (1<<15)	/* Node memory alloc*/
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/* Thread control flag bits */
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#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 */
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/* If lock -- can be removed after some work */
#define   if_lock(t)           spin_lock(&(t->if_lock));
#define   if_unlock(t)           spin_unlock(&(t->if_lock));

/* Used to help with determining the pkts on receive */
#define PKTGEN_MAGIC 0xbe9be955
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#define PG_PROC_DIR "pktgen"
#define PGCTRL	    "pgctrl"
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#define MAX_CFLOWS  65536

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

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

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

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struct pktgen_dev {
	/*
	 * Try to keep frequent/infrequent used vars. separated.
	 */
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	struct proc_dir_entry *entry;	/* proc file */
	struct pktgen_thread *pg_thread;/* the owner */
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	struct list_head list;		/* chaining in the thread's run-queue */
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	int running;		/* if false, the test will stop */
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	/* If min != max, then we will either do a linear iteration, or
	 * we will do a random selection from within the range.
	 */
	__u32 flags;
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	int removal_mark;	/* non-zero => the device is marked for
				 * removal by worker thread */
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	int min_pkt_size;
	int max_pkt_size;
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	int pkt_overhead;	/* overhead for MPLS, VLANs, IPSEC etc */
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	int nfrags;
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	struct page *page;
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	u64 delay;		/* nano-seconds */

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	__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 */
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	__u64 errors;		/* Errors when trying to transmit, */
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	/* runtime counters relating to clone_skb */

	__u64 allocated_skbs;
	__u32 clone_count;
	int last_ok;		/* Was last skb sent?
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				 * Or a failed transmit of some sort?
				 * This will keep sequence numbers in order
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				 */
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	ktime_t next_tx;
	ktime_t started_at;
	ktime_t stopped_at;
	u64	idle_acc;	/* nano-seconds */

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	__u32 seq_num;

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	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.
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				 */

	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;
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	/* For ranges */
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	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.
	 */
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	__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 */
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	__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 */

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	/* DSCP + ECN */
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	__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) */
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	/* MPLS */
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	unsigned int nr_labels;	/* Depth of stack, 0 = no MPLS */
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	__be32 labels[MAX_MPLS_LABELS];

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	/* 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 */

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	__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;
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	__be32 cur_saddr;
	__be32 cur_daddr;
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	__u16 ip_id;
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	__u16 cur_udp_dst;
	__u16 cur_udp_src;
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	__u16 cur_queue_map;
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	__u32 cur_pkt_size;
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	__u32 last_pkt_size;
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	__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 */

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	struct sk_buff *skb;	/* skb we are to transmit next, used for when we
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				 * are transmitting the same one multiple times
				 */
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	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.)
				  */
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	char odevname[32];
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	struct flow_state *flows;
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	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)*/
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	u16 queue_map_min;
	u16 queue_map_max;
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	__u32 skb_priority;	/* skb priority field */
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	int node;               /* Memory node */
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#ifdef CONFIG_XFRM
	__u8	ipsmode;		/* IPSEC mode (config) */
	__u8	ipsproto;		/* IPSEC type (config) */
#endif
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	char result[512];
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};

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

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

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	/* Field for thread to receive "posted" events terminate,
	   stop ifs etc. */
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	u32 control;
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	int cpu;

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

#define REMOVE 1
#define FIND   0

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static const char version[] =
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	"Packet Generator for packet performance testing. "
	"Version: " VERSION "\n";
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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,
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					  const char *ifname, bool exact);
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static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
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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);
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static void pktgen_stop(struct pktgen_thread *t);
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static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
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/* Module parameters, defaults. */
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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;
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static DEFINE_MUTEX(pktgen_thread_lock);
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static struct notifier_block pktgen_notifier_block = {
	.notifier_call = pktgen_device_event,
};

/*
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 * /proc handling functions
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Linus Torvalds 已提交
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 *
 */

464
static int pgctrl_show(struct seq_file *seq, void *v)
L
Luiz Capitulino 已提交
465
{
S
Stephen Hemminger 已提交
466
	seq_puts(seq, version);
467
	return 0;
L
Linus Torvalds 已提交
468 469
}

470 471
static ssize_t pgctrl_write(struct file *file, const char __user *buf,
			    size_t count, loff_t *ppos)
L
Linus Torvalds 已提交
472 473
{
	int err = 0;
474
	char data[128];
C
Cong Wang 已提交
475
	struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
L
Linus Torvalds 已提交
476

L
Luiz Capitulino 已提交
477 478
	if (!capable(CAP_NET_ADMIN)) {
		err = -EPERM;
L
Linus Torvalds 已提交
479
		goto out;
L
Luiz Capitulino 已提交
480
	}
L
Linus Torvalds 已提交
481

482 483
	if (count > sizeof(data))
		count = sizeof(data);
L
Linus Torvalds 已提交
484 485

	if (copy_from_user(data, buf, count)) {
486
		err = -EFAULT;
487
		goto out;
L
Luiz Capitulino 已提交
488 489
	}
	data[count - 1] = 0;	/* Make string */
L
Linus Torvalds 已提交
490

L
Luiz Capitulino 已提交
491
	if (!strcmp(data, "stop"))
C
Cong Wang 已提交
492
		pktgen_stop_all_threads_ifs(pn);
L
Linus Torvalds 已提交
493

L
Luiz Capitulino 已提交
494
	else if (!strcmp(data, "start"))
C
Cong Wang 已提交
495
		pktgen_run_all_threads(pn);
L
Linus Torvalds 已提交
496

497
	else if (!strcmp(data, "reset"))
C
Cong Wang 已提交
498
		pktgen_reset_all_threads(pn);
499

L
Luiz Capitulino 已提交
500
	else
J
Joe Perches 已提交
501
		pr_warning("Unknown command: %s\n", data);
L
Linus Torvalds 已提交
502 503 504

	err = count;

L
Luiz Capitulino 已提交
505 506
out:
	return err;
L
Linus Torvalds 已提交
507 508
}

509 510 511 512 513
static int pgctrl_open(struct inode *inode, struct file *file)
{
	return single_open(file, pgctrl_show, PDE(inode)->data);
}

514
static const struct file_operations pktgen_fops = {
L
Luiz Capitulino 已提交
515 516 517 518 519 520
	.owner   = THIS_MODULE,
	.open    = pgctrl_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pgctrl_write,
	.release = single_release,
521 522 523
};

static int pktgen_if_show(struct seq_file *seq, void *v)
L
Linus Torvalds 已提交
524
{
S
Stephen Hemminger 已提交
525
	const struct pktgen_dev *pkt_dev = seq->private;
526 527
	ktime_t stopped;
	u64 idle;
L
Luiz Capitulino 已提交
528 529 530 531 532 533 534

	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,
535 536
		   "     frags: %d  delay: %llu  clone_skb: %d  ifname: %s\n",
		   pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
E
Eric Dumazet 已提交
537
		   pkt_dev->clone_skb, pkt_dev->odevname);
L
Luiz Capitulino 已提交
538 539 540 541

	seq_printf(seq, "     flows: %u flowlen: %u\n", pkt_dev->cflows,
		   pkt_dev->lflow);

R
Robert Olsson 已提交
542 543 544 545 546
	seq_printf(seq,
		   "     queue_map_min: %u  queue_map_max: %u\n",
		   pkt_dev->queue_map_min,
		   pkt_dev->queue_map_max);

J
John Fastabend 已提交
547 548 549 550
	if (pkt_dev->skb_priority)
		seq_printf(seq, "     skb_priority: %u\n",
			   pkt_dev->skb_priority);

L
Luiz Capitulino 已提交
551 552
	if (pkt_dev->flags & F_IPV6) {
		seq_printf(seq,
553 554 555 556 557 558
			   "     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);
559 560 561 562
	} else {
		seq_printf(seq,
			   "     dst_min: %s  dst_max: %s\n",
			   pkt_dev->dst_min, pkt_dev->dst_max);
L
Luiz Capitulino 已提交
563
		seq_printf(seq,
564 565 566
			   "        src_min: %s  src_max: %s\n",
			   pkt_dev->src_min, pkt_dev->src_max);
	}
L
Linus Torvalds 已提交
567

L
Luiz Capitulino 已提交
568
	seq_puts(seq, "     src_mac: ");
L
Linus Torvalds 已提交
569

J
Johannes Berg 已提交
570 571 572
	seq_printf(seq, "%pM ",
		   is_zero_ether_addr(pkt_dev->src_mac) ?
			     pkt_dev->odev->dev_addr : pkt_dev->src_mac);
L
Luiz Capitulino 已提交
573 574

	seq_printf(seq, "dst_mac: ");
J
Johannes Berg 已提交
575
	seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
L
Luiz Capitulino 已提交
576 577

	seq_printf(seq,
578 579
		   "     udp_src_min: %d  udp_src_max: %d"
		   "  udp_dst_min: %d  udp_dst_max: %d\n",
L
Luiz Capitulino 已提交
580 581 582 583
		   pkt_dev->udp_src_min, pkt_dev->udp_src_max,
		   pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);

	seq_printf(seq,
584
		   "     src_mac_count: %d  dst_mac_count: %d\n",
L
Luiz Capitulino 已提交
585
		   pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
L
Linus Torvalds 已提交
586

587
	if (pkt_dev->nr_labels) {
588
		unsigned int i;
589
		seq_printf(seq, "     mpls: ");
590
		for (i = 0; i < pkt_dev->nr_labels; i++)
591 592 593 594
			seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
				   i == pkt_dev->nr_labels-1 ? "\n" : ", ");
	}

595
	if (pkt_dev->vlan_id != 0xffff)
F
Francesco Fondelli 已提交
596
		seq_printf(seq, "     vlan_id: %u  vlan_p: %u  vlan_cfi: %u\n",
597 598
			   pkt_dev->vlan_id, pkt_dev->vlan_p,
			   pkt_dev->vlan_cfi);
F
Francesco Fondelli 已提交
599

600
	if (pkt_dev->svlan_id != 0xffff)
F
Francesco Fondelli 已提交
601
		seq_printf(seq, "     svlan_id: %u  vlan_p: %u  vlan_cfi: %u\n",
602 603
			   pkt_dev->svlan_id, pkt_dev->svlan_p,
			   pkt_dev->svlan_cfi);
F
Francesco Fondelli 已提交
604

605
	if (pkt_dev->tos)
F
Francesco Fondelli 已提交
606 607
		seq_printf(seq, "     tos: 0x%02x\n", pkt_dev->tos);

608
	if (pkt_dev->traffic_class)
F
Francesco Fondelli 已提交
609 610
		seq_printf(seq, "     traffic_class: 0x%02x\n", pkt_dev->traffic_class);

R
Robert Olsson 已提交
611 612 613
	if (pkt_dev->node >= 0)
		seq_printf(seq, "     node: %d\n", pkt_dev->node);

614 615
	seq_printf(seq, "     Flags: ");

L
Luiz Capitulino 已提交
616 617
	if (pkt_dev->flags & F_IPV6)
		seq_printf(seq, "IPV6  ");
L
Linus Torvalds 已提交
618

L
Luiz Capitulino 已提交
619 620
	if (pkt_dev->flags & F_IPSRC_RND)
		seq_printf(seq, "IPSRC_RND  ");
L
Linus Torvalds 已提交
621

L
Luiz Capitulino 已提交
622 623
	if (pkt_dev->flags & F_IPDST_RND)
		seq_printf(seq, "IPDST_RND  ");
L
Linus Torvalds 已提交
624

L
Luiz Capitulino 已提交
625 626
	if (pkt_dev->flags & F_TXSIZE_RND)
		seq_printf(seq, "TXSIZE_RND  ");
L
Linus Torvalds 已提交
627

L
Luiz Capitulino 已提交
628 629
	if (pkt_dev->flags & F_UDPSRC_RND)
		seq_printf(seq, "UDPSRC_RND  ");
L
Linus Torvalds 已提交
630

L
Luiz Capitulino 已提交
631 632
	if (pkt_dev->flags & F_UDPDST_RND)
		seq_printf(seq, "UDPDST_RND  ");
L
Linus Torvalds 已提交
633

634 635 636
	if (pkt_dev->flags & F_MPLS_RND)
		seq_printf(seq,  "MPLS_RND  ");

R
Robert Olsson 已提交
637 638 639
	if (pkt_dev->flags & F_QUEUE_MAP_RND)
		seq_printf(seq,  "QUEUE_MAP_RND  ");

R
Robert Olsson 已提交
640 641 642
	if (pkt_dev->flags & F_QUEUE_MAP_CPU)
		seq_printf(seq,  "QUEUE_MAP_CPU  ");

643 644 645 646 647 648 649
	if (pkt_dev->cflows) {
		if (pkt_dev->flags & F_FLOW_SEQ)
			seq_printf(seq,  "FLOW_SEQ  "); /*in sequence flows*/
		else
			seq_printf(seq,  "FLOW_RND  ");
	}

J
Jamal Hadi Salim 已提交
650 651 652 653 654
#ifdef CONFIG_XFRM
	if (pkt_dev->flags & F_IPSEC_ON)
		seq_printf(seq,  "IPSEC  ");
#endif

L
Luiz Capitulino 已提交
655 656
	if (pkt_dev->flags & F_MACSRC_RND)
		seq_printf(seq, "MACSRC_RND  ");
L
Linus Torvalds 已提交
657

L
Luiz Capitulino 已提交
658 659
	if (pkt_dev->flags & F_MACDST_RND)
		seq_printf(seq, "MACDST_RND  ");
L
Linus Torvalds 已提交
660

F
Francesco Fondelli 已提交
661 662 663 664 665 666
	if (pkt_dev->flags & F_VID_RND)
		seq_printf(seq, "VID_RND  ");

	if (pkt_dev->flags & F_SVID_RND)
		seq_printf(seq, "SVID_RND  ");

R
Robert Olsson 已提交
667 668 669
	if (pkt_dev->flags & F_NODE)
		seq_printf(seq, "NODE_ALLOC  ");

L
Luiz Capitulino 已提交
670 671
	seq_puts(seq, "\n");

672
	/* not really stopped, more like last-running-at */
D
Daniel Borkmann 已提交
673
	stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
674 675
	idle = pkt_dev->idle_acc;
	do_div(idle, NSEC_PER_USEC);
L
Linus Torvalds 已提交
676

L
Luiz Capitulino 已提交
677
	seq_printf(seq,
678
		   "Current:\n     pkts-sofar: %llu  errors: %llu\n",
L
Luiz Capitulino 已提交
679
		   (unsigned long long)pkt_dev->sofar,
680 681 682 683 684 685 686
		   (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);
L
Linus Torvalds 已提交
687

L
Luiz Capitulino 已提交
688 689
	seq_printf(seq,
		   "     seq_num: %d  cur_dst_mac_offset: %d  cur_src_mac_offset: %d\n",
690 691
		   pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
		   pkt_dev->cur_src_mac_offset);
L
Linus Torvalds 已提交
692

L
Luiz Capitulino 已提交
693
	if (pkt_dev->flags & F_IPV6) {
694 695 696
		seq_printf(seq, "     cur_saddr: %pI6c  cur_daddr: %pI6c\n",
				&pkt_dev->cur_in6_saddr,
				&pkt_dev->cur_in6_daddr);
L
Luiz Capitulino 已提交
697
	} else
698 699
		seq_printf(seq, "     cur_saddr: %pI4  cur_daddr: %pI4\n",
			   &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
L
Linus Torvalds 已提交
700

L
Luiz Capitulino 已提交
701
	seq_printf(seq, "     cur_udp_dst: %d  cur_udp_src: %d\n",
702
		   pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
L
Linus Torvalds 已提交
703

R
Robert Olsson 已提交
704 705
	seq_printf(seq, "     cur_queue_map: %u\n", pkt_dev->cur_queue_map);

L
Luiz Capitulino 已提交
706
	seq_printf(seq, "     flows: %u\n", pkt_dev->nflows);
L
Linus Torvalds 已提交
707 708

	if (pkt_dev->result[0])
L
Luiz Capitulino 已提交
709
		seq_printf(seq, "Result: %s\n", pkt_dev->result);
L
Linus Torvalds 已提交
710
	else
L
Luiz Capitulino 已提交
711
		seq_printf(seq, "Result: Idle\n");
L
Linus Torvalds 已提交
712

713
	return 0;
L
Linus Torvalds 已提交
714 715
}

716

717 718
static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
		     __u32 *num)
719 720 721 722
{
	int i = 0;
	*num = 0;

723
	for (; i < maxlen; i++) {
724
		int value;
725 726 727 728
		char c;
		*num <<= 4;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
729 730 731
		value = hex_to_bin(c);
		if (value >= 0)
			*num |= value;
732 733 734 735 736 737
		else
			break;
	}
	return i;
}

L
Luiz Capitulino 已提交
738 739
static int count_trail_chars(const char __user * user_buffer,
			     unsigned int maxlen)
L
Linus Torvalds 已提交
740 741 742 743
{
	int i;

	for (i = 0; i < maxlen; i++) {
L
Luiz Capitulino 已提交
744 745 746 747
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		switch (c) {
L
Linus Torvalds 已提交
748 749 750 751 752 753 754 755 756
		case '\"':
		case '\n':
		case '\r':
		case '\t':
		case ' ':
		case '=':
			break;
		default:
			goto done;
757
		}
L
Linus Torvalds 已提交
758 759 760 761 762
	}
done:
	return i;
}

763 764
static long num_arg(const char __user *user_buffer, unsigned long maxlen,
				unsigned long *num)
L
Linus Torvalds 已提交
765
{
766
	int i;
L
Linus Torvalds 已提交
767
	*num = 0;
L
Luiz Capitulino 已提交
768

769
	for (i = 0; i < maxlen; i++) {
L
Luiz Capitulino 已提交
770 771 772 773
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		if ((c >= '0') && (c <= '9')) {
L
Linus Torvalds 已提交
774
			*num *= 10;
L
Luiz Capitulino 已提交
775
			*num += c - '0';
L
Linus Torvalds 已提交
776 777 778 779 780 781
		} else
			break;
	}
	return i;
}

L
Luiz Capitulino 已提交
782
static int strn_len(const char __user * user_buffer, unsigned int maxlen)
L
Linus Torvalds 已提交
783
{
784
	int i;
L
Linus Torvalds 已提交
785

786
	for (i = 0; i < maxlen; i++) {
L
Luiz Capitulino 已提交
787 788 789 790
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		switch (c) {
L
Linus Torvalds 已提交
791 792 793 794 795 796 797 798 799
		case '\"':
		case '\n':
		case '\r':
		case '\t':
		case ' ':
			goto done_str;
			break;
		default:
			break;
800
		}
L
Linus Torvalds 已提交
801 802 803 804 805
	}
done_str:
	return i;
}

806 807
static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
{
808
	unsigned int n = 0;
809 810 811 812 813 814 815
	char c;
	ssize_t i = 0;
	int len;

	pkt_dev->nr_labels = 0;
	do {
		__u32 tmp;
F
Francesco Fondelli 已提交
816
		len = hex32_arg(&buffer[i], 8, &tmp);
817 818 819 820 821 822 823 824 825 826 827 828
		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;
829
	} while (c == ',');
830 831 832 833 834

	pkt_dev->nr_labels = n;
	return i;
}

L
Luiz Capitulino 已提交
835 836 837
static ssize_t pktgen_if_write(struct file *file,
			       const char __user * user_buffer, size_t count,
			       loff_t * offset)
L
Linus Torvalds 已提交
838
{
839
	struct seq_file *seq = file->private_data;
L
Luiz Capitulino 已提交
840
	struct pktgen_dev *pkt_dev = seq->private;
841
	int i, max, len;
L
Linus Torvalds 已提交
842 843
	char name[16], valstr[32];
	unsigned long value = 0;
L
Luiz Capitulino 已提交
844 845
	char *pg_result = NULL;
	int tmp = 0;
L
Linus Torvalds 已提交
846
	char buf[128];
L
Luiz Capitulino 已提交
847 848 849

	pg_result = &(pkt_dev->result[0]);

L
Linus Torvalds 已提交
850
	if (count < 1) {
J
Joe Perches 已提交
851
		pr_warning("wrong command format\n");
L
Linus Torvalds 已提交
852 853
		return -EINVAL;
	}
L
Luiz Capitulino 已提交
854

855 856
	max = count;
	tmp = count_trail_chars(user_buffer, max);
L
Luiz Capitulino 已提交
857
	if (tmp < 0) {
J
Joe Perches 已提交
858
		pr_warning("illegal format\n");
L
Luiz Capitulino 已提交
859
		return tmp;
L
Linus Torvalds 已提交
860
	}
861
	i = tmp;
L
Luiz Capitulino 已提交
862

L
Linus Torvalds 已提交
863 864 865
	/* Read variable name */

	len = strn_len(&user_buffer[i], sizeof(name) - 1);
866
	if (len < 0)
L
Luiz Capitulino 已提交
867
		return len;
868

L
Linus Torvalds 已提交
869
	memset(name, 0, sizeof(name));
L
Luiz Capitulino 已提交
870
	if (copy_from_user(name, &user_buffer[i], len))
L
Linus Torvalds 已提交
871 872
		return -EFAULT;
	i += len;
L
Luiz Capitulino 已提交
873 874

	max = count - i;
L
Linus Torvalds 已提交
875
	len = count_trail_chars(&user_buffer[i], max);
L
Luiz Capitulino 已提交
876 877 878
	if (len < 0)
		return len;

L
Linus Torvalds 已提交
879 880 881
	i += len;

	if (debug) {
882
		size_t copy = min_t(size_t, count, 1023);
883 884
		char tb[copy + 1];
		if (copy_from_user(tb, user_buffer, copy))
L
Linus Torvalds 已提交
885
			return -EFAULT;
886
		tb[copy] = 0;
J
Joe Perches 已提交
887 888
		pr_debug("%s,%lu  buffer -:%s:-\n",
			 name, (unsigned long)count, tb);
L
Luiz Capitulino 已提交
889
	}
L
Linus Torvalds 已提交
890 891 892

	if (!strcmp(name, "min_pkt_size")) {
		len = num_arg(&user_buffer[i], 10, &value);
893
		if (len < 0)
L
Luiz Capitulino 已提交
894
			return len;
895

L
Linus Torvalds 已提交
896
		i += len;
L
Luiz Capitulino 已提交
897 898 899 900 901 902 903 904
		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);
L
Linus Torvalds 已提交
905 906 907
		return count;
	}

L
Luiz Capitulino 已提交
908
	if (!strcmp(name, "max_pkt_size")) {
L
Linus Torvalds 已提交
909
		len = num_arg(&user_buffer[i], 10, &value);
910
		if (len < 0)
L
Luiz Capitulino 已提交
911
			return len;
912

L
Linus Torvalds 已提交
913
		i += len;
L
Luiz Capitulino 已提交
914 915 916 917 918 919 920 921
		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);
L
Linus Torvalds 已提交
922 923 924
		return count;
	}

L
Luiz Capitulino 已提交
925
	/* Shortcut for min = max */
L
Linus Torvalds 已提交
926 927 928

	if (!strcmp(name, "pkt_size")) {
		len = num_arg(&user_buffer[i], 10, &value);
929
		if (len < 0)
L
Luiz Capitulino 已提交
930
			return len;
931

L
Linus Torvalds 已提交
932
		i += len;
L
Luiz Capitulino 已提交
933 934 935 936 937 938 939
		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;
		}
L
Linus Torvalds 已提交
940 941 942 943
		sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
		return count;
	}

L
Luiz Capitulino 已提交
944
	if (!strcmp(name, "debug")) {
L
Linus Torvalds 已提交
945
		len = num_arg(&user_buffer[i], 10, &value);
946
		if (len < 0)
L
Luiz Capitulino 已提交
947
			return len;
948

L
Linus Torvalds 已提交
949
		i += len;
L
Luiz Capitulino 已提交
950
		debug = value;
L
Linus Torvalds 已提交
951 952 953 954
		sprintf(pg_result, "OK: debug=%u", debug);
		return count;
	}

L
Luiz Capitulino 已提交
955
	if (!strcmp(name, "frags")) {
L
Linus Torvalds 已提交
956
		len = num_arg(&user_buffer[i], 10, &value);
957
		if (len < 0)
L
Luiz Capitulino 已提交
958
			return len;
959

L
Linus Torvalds 已提交
960 961 962 963 964 965 966
		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);
967
		if (len < 0)
L
Luiz Capitulino 已提交
968
			return len;
969

L
Linus Torvalds 已提交
970
		i += len;
971 972 973
		if (value == 0x7FFFFFFF)
			pkt_dev->delay = ULLONG_MAX;
		else
E
Eric Dumazet 已提交
974
			pkt_dev->delay = (u64)value;
975 976 977

		sprintf(pg_result, "OK: delay=%llu",
			(unsigned long long) pkt_dev->delay);
L
Linus Torvalds 已提交
978 979
		return count;
	}
980 981 982 983 984 985 986 987 988 989
	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)
J
Joe Perches 已提交
990
			pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004

		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)
J
Joe Perches 已提交
1005
			pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
1006 1007 1008 1009

		sprintf(pg_result, "OK: rate=%lu", value);
		return count;
	}
L
Luiz Capitulino 已提交
1010
	if (!strcmp(name, "udp_src_min")) {
L
Linus Torvalds 已提交
1011
		len = num_arg(&user_buffer[i], 10, &value);
1012
		if (len < 0)
L
Luiz Capitulino 已提交
1013
			return len;
1014

L
Linus Torvalds 已提交
1015
		i += len;
L
Luiz Capitulino 已提交
1016 1017 1018 1019
		if (value != pkt_dev->udp_src_min) {
			pkt_dev->udp_src_min = value;
			pkt_dev->cur_udp_src = value;
		}
L
Linus Torvalds 已提交
1020 1021 1022
		sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
		return count;
	}
L
Luiz Capitulino 已提交
1023
	if (!strcmp(name, "udp_dst_min")) {
L
Linus Torvalds 已提交
1024
		len = num_arg(&user_buffer[i], 10, &value);
1025
		if (len < 0)
L
Luiz Capitulino 已提交
1026
			return len;
1027

L
Linus Torvalds 已提交
1028
		i += len;
L
Luiz Capitulino 已提交
1029 1030 1031 1032
		if (value != pkt_dev->udp_dst_min) {
			pkt_dev->udp_dst_min = value;
			pkt_dev->cur_udp_dst = value;
		}
L
Linus Torvalds 已提交
1033 1034 1035
		sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
		return count;
	}
L
Luiz Capitulino 已提交
1036
	if (!strcmp(name, "udp_src_max")) {
L
Linus Torvalds 已提交
1037
		len = num_arg(&user_buffer[i], 10, &value);
1038
		if (len < 0)
L
Luiz Capitulino 已提交
1039
			return len;
1040

L
Linus Torvalds 已提交
1041
		i += len;
L
Luiz Capitulino 已提交
1042 1043 1044 1045
		if (value != pkt_dev->udp_src_max) {
			pkt_dev->udp_src_max = value;
			pkt_dev->cur_udp_src = value;
		}
L
Linus Torvalds 已提交
1046 1047 1048
		sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
		return count;
	}
L
Luiz Capitulino 已提交
1049
	if (!strcmp(name, "udp_dst_max")) {
L
Linus Torvalds 已提交
1050
		len = num_arg(&user_buffer[i], 10, &value);
1051
		if (len < 0)
L
Luiz Capitulino 已提交
1052
			return len;
1053

L
Linus Torvalds 已提交
1054
		i += len;
L
Luiz Capitulino 已提交
1055 1056 1057 1058
		if (value != pkt_dev->udp_dst_max) {
			pkt_dev->udp_dst_max = value;
			pkt_dev->cur_udp_dst = value;
		}
L
Linus Torvalds 已提交
1059 1060 1061 1062 1063
		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);
1064
		if (len < 0)
L
Luiz Capitulino 已提交
1065
			return len;
1066 1067 1068
		if ((value > 0) &&
		    (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
			return -ENOTSUPP;
L
Linus Torvalds 已提交
1069
		i += len;
L
Luiz Capitulino 已提交
1070 1071
		pkt_dev->clone_skb = value;

L
Linus Torvalds 已提交
1072 1073 1074 1075 1076
		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);
1077
		if (len < 0)
L
Luiz Capitulino 已提交
1078
			return len;
1079

L
Linus Torvalds 已提交
1080 1081 1082
		i += len;
		pkt_dev->count = value;
		sprintf(pg_result, "OK: count=%llu",
L
Luiz Capitulino 已提交
1083
			(unsigned long long)pkt_dev->count);
L
Linus Torvalds 已提交
1084 1085 1086 1087
		return count;
	}
	if (!strcmp(name, "src_mac_count")) {
		len = num_arg(&user_buffer[i], 10, &value);
1088
		if (len < 0)
L
Luiz Capitulino 已提交
1089
			return len;
1090

L
Linus Torvalds 已提交
1091 1092
		i += len;
		if (pkt_dev->src_mac_count != value) {
L
Luiz Capitulino 已提交
1093 1094 1095 1096 1097
			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);
L
Linus Torvalds 已提交
1098 1099 1100 1101
		return count;
	}
	if (!strcmp(name, "dst_mac_count")) {
		len = num_arg(&user_buffer[i], 10, &value);
1102
		if (len < 0)
L
Luiz Capitulino 已提交
1103
			return len;
1104

L
Linus Torvalds 已提交
1105 1106
		i += len;
		if (pkt_dev->dst_mac_count != value) {
L
Luiz Capitulino 已提交
1107 1108 1109 1110 1111
			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);
L
Linus Torvalds 已提交
1112 1113
		return count;
	}
R
Robert Olsson 已提交
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
	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);
E
Eric Dumazet 已提交
1124 1125 1126 1127
			if (pkt_dev->page) {
				put_page(pkt_dev->page);
				pkt_dev->page = NULL;
			}
R
Robert Olsson 已提交
1128 1129 1130 1131 1132
		}
		else
			sprintf(pg_result, "ERROR: node not possible");
		return count;
	}
L
Linus Torvalds 已提交
1133
	if (!strcmp(name, "flag")) {
L
Luiz Capitulino 已提交
1134 1135
		char f[32];
		memset(f, 0, 32);
L
Linus Torvalds 已提交
1136
		len = strn_len(&user_buffer[i], sizeof(f) - 1);
1137
		if (len < 0)
L
Luiz Capitulino 已提交
1138
			return len;
1139

L
Linus Torvalds 已提交
1140 1141 1142
		if (copy_from_user(f, &user_buffer[i], len))
			return -EFAULT;
		i += len;
L
Luiz Capitulino 已提交
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
		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;

1185 1186 1187 1188 1189 1190
		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;

F
Francesco Fondelli 已提交
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
		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;

1203 1204 1205
		else if (strcmp(f, "FLOW_SEQ") == 0)
			pkt_dev->flags |= F_FLOW_SEQ;

R
Robert Olsson 已提交
1206 1207 1208 1209 1210
		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;
R
Robert Olsson 已提交
1211 1212 1213 1214 1215 1216

		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;
J
Jamal Hadi Salim 已提交
1217 1218 1219 1220 1221
#ifdef CONFIG_XFRM
		else if (strcmp(f, "IPSEC") == 0)
			pkt_dev->flags |= F_IPSEC_ON;
#endif

F
Francesco Fondelli 已提交
1222 1223 1224
		else if (strcmp(f, "!IPV6") == 0)
			pkt_dev->flags &= ~F_IPV6;

R
Robert Olsson 已提交
1225 1226 1227 1228 1229 1230
		else if (strcmp(f, "NODE_ALLOC") == 0)
			pkt_dev->flags |= F_NODE;

		else if (strcmp(f, "!NODE_ALLOC") == 0)
			pkt_dev->flags &= ~F_NODE;

L
Luiz Capitulino 已提交
1231 1232 1233 1234
		else {
			sprintf(pg_result,
				"Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
				f,
F
Francesco Fondelli 已提交
1235
				"IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
R
Robert Olsson 已提交
1236
				"MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
L
Luiz Capitulino 已提交
1237 1238
			return count;
		}
L
Linus Torvalds 已提交
1239 1240 1241 1242 1243
		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);
1244
		if (len < 0)
L
Luiz Capitulino 已提交
1245
			return len;
L
Linus Torvalds 已提交
1246

L
Luiz Capitulino 已提交
1247
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1248
			return -EFAULT;
L
Luiz Capitulino 已提交
1249 1250 1251 1252 1253 1254 1255 1256
		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)
J
Joe Perches 已提交
1257
			pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
L
Luiz Capitulino 已提交
1258
		i += len;
L
Linus Torvalds 已提交
1259 1260 1261 1262 1263
		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);
1264
		if (len < 0)
L
Luiz Capitulino 已提交
1265
			return len;
1266

L
Linus Torvalds 已提交
1267

L
Luiz Capitulino 已提交
1268
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1269 1270
			return -EFAULT;

L
Luiz Capitulino 已提交
1271 1272 1273 1274 1275 1276 1277 1278
		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)
J
Joe Perches 已提交
1279
			pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
L
Linus Torvalds 已提交
1280 1281 1282 1283 1284 1285
		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);
L
Luiz Capitulino 已提交
1286 1287
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1288 1289 1290

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1291
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1292
			return -EFAULT;
L
Luiz Capitulino 已提交
1293
		buf[len] = 0;
L
Linus Torvalds 已提交
1294

1295
		in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
1296
		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
L
Linus Torvalds 已提交
1297

A
Alexey Dobriyan 已提交
1298
		pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
L
Linus Torvalds 已提交
1299

L
Luiz Capitulino 已提交
1300
		if (debug)
J
Joe Perches 已提交
1301
			pr_debug("dst6 set to: %s\n", buf);
L
Linus Torvalds 已提交
1302

L
Luiz Capitulino 已提交
1303
		i += len;
L
Linus Torvalds 已提交
1304 1305 1306 1307 1308
		sprintf(pg_result, "OK: dst6=%s", buf);
		return count;
	}
	if (!strcmp(name, "dst6_min")) {
		len = strn_len(&user_buffer[i], sizeof(buf) - 1);
L
Luiz Capitulino 已提交
1309 1310
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1311 1312 1313

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1314
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1315
			return -EFAULT;
L
Luiz Capitulino 已提交
1316
		buf[len] = 0;
L
Linus Torvalds 已提交
1317

1318
		in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
1319
		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
L
Linus Torvalds 已提交
1320

A
Alexey Dobriyan 已提交
1321
		pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
L
Luiz Capitulino 已提交
1322
		if (debug)
J
Joe Perches 已提交
1323
			pr_debug("dst6_min set to: %s\n", buf);
L
Linus Torvalds 已提交
1324

L
Luiz Capitulino 已提交
1325
		i += len;
L
Linus Torvalds 已提交
1326 1327 1328 1329 1330
		sprintf(pg_result, "OK: dst6_min=%s", buf);
		return count;
	}
	if (!strcmp(name, "dst6_max")) {
		len = strn_len(&user_buffer[i], sizeof(buf) - 1);
L
Luiz Capitulino 已提交
1331 1332
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1333 1334 1335

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1336
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1337
			return -EFAULT;
L
Luiz Capitulino 已提交
1338
		buf[len] = 0;
L
Linus Torvalds 已提交
1339

1340
		in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
1341
		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
L
Linus Torvalds 已提交
1342

L
Luiz Capitulino 已提交
1343
		if (debug)
J
Joe Perches 已提交
1344
			pr_debug("dst6_max set to: %s\n", buf);
L
Linus Torvalds 已提交
1345

L
Luiz Capitulino 已提交
1346
		i += len;
L
Linus Torvalds 已提交
1347 1348 1349 1350 1351
		sprintf(pg_result, "OK: dst6_max=%s", buf);
		return count;
	}
	if (!strcmp(name, "src6")) {
		len = strn_len(&user_buffer[i], sizeof(buf) - 1);
L
Luiz Capitulino 已提交
1352 1353
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1354 1355 1356

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1357
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1358
			return -EFAULT;
L
Luiz Capitulino 已提交
1359
		buf[len] = 0;
L
Linus Torvalds 已提交
1360

1361
		in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
1362
		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
L
Linus Torvalds 已提交
1363

A
Alexey Dobriyan 已提交
1364
		pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
L
Linus Torvalds 已提交
1365

L
Luiz Capitulino 已提交
1366
		if (debug)
J
Joe Perches 已提交
1367
			pr_debug("src6 set to: %s\n", buf);
L
Luiz Capitulino 已提交
1368 1369

		i += len;
L
Linus Torvalds 已提交
1370 1371 1372 1373 1374
		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);
1375
		if (len < 0)
L
Luiz Capitulino 已提交
1376
			return len;
1377

L
Luiz Capitulino 已提交
1378
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1379
			return -EFAULT;
L
Luiz Capitulino 已提交
1380 1381 1382 1383 1384 1385 1386 1387
		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)
J
Joe Perches 已提交
1388
			pr_debug("src_min set to: %s\n", pkt_dev->src_min);
L
Linus Torvalds 已提交
1389 1390 1391 1392 1393 1394
		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);
1395
		if (len < 0)
L
Luiz Capitulino 已提交
1396
			return len;
1397

L
Luiz Capitulino 已提交
1398
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1399
			return -EFAULT;
L
Luiz Capitulino 已提交
1400 1401 1402 1403 1404 1405 1406 1407
		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)
J
Joe Perches 已提交
1408
			pr_debug("src_max set to: %s\n", pkt_dev->src_max);
L
Linus Torvalds 已提交
1409 1410 1411 1412 1413 1414
		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);
1415
		if (len < 0)
L
Luiz Capitulino 已提交
1416
			return len;
1417

L
Linus Torvalds 已提交
1418
		memset(valstr, 0, sizeof(valstr));
L
Luiz Capitulino 已提交
1419
		if (copy_from_user(valstr, &user_buffer[i], len))
L
Linus Torvalds 已提交
1420 1421
			return -EFAULT;

1422 1423
		if (!mac_pton(valstr, pkt_dev->dst_mac))
			return -EINVAL;
L
Linus Torvalds 已提交
1424
		/* Set up Dest MAC */
1425
		memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
L
Luiz Capitulino 已提交
1426

1427
		sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
L
Linus Torvalds 已提交
1428 1429 1430 1431
		return count;
	}
	if (!strcmp(name, "src_mac")) {
		len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
1432
		if (len < 0)
L
Luiz Capitulino 已提交
1433
			return len;
1434

L
Linus Torvalds 已提交
1435
		memset(valstr, 0, sizeof(valstr));
L
Luiz Capitulino 已提交
1436
		if (copy_from_user(valstr, &user_buffer[i], len))
L
Linus Torvalds 已提交
1437 1438
			return -EFAULT;

1439 1440
		if (!mac_pton(valstr, pkt_dev->src_mac))
			return -EINVAL;
A
Adit Ranadive 已提交
1441
		/* Set up Src MAC */
1442
		memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
A
Adit Ranadive 已提交
1443

1444
		sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
L
Linus Torvalds 已提交
1445 1446 1447
		return count;
	}

L
Luiz Capitulino 已提交
1448 1449 1450 1451 1452
	if (!strcmp(name, "clear_counters")) {
		pktgen_clear_counters(pkt_dev);
		sprintf(pg_result, "OK: Clearing counters.\n");
		return count;
	}
L
Linus Torvalds 已提交
1453 1454 1455

	if (!strcmp(name, "flows")) {
		len = num_arg(&user_buffer[i], 10, &value);
1456
		if (len < 0)
L
Luiz Capitulino 已提交
1457
			return len;
1458

L
Linus Torvalds 已提交
1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469
		i += len;
		if (value > MAX_CFLOWS)
			value = MAX_CFLOWS;

		pkt_dev->cflows = value;
		sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
		return count;
	}

	if (!strcmp(name, "flowlen")) {
		len = num_arg(&user_buffer[i], 10, &value);
1470
		if (len < 0)
L
Luiz Capitulino 已提交
1471
			return len;
1472

L
Linus Torvalds 已提交
1473 1474 1475 1476 1477
		i += len;
		pkt_dev->lflow = value;
		sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
		return count;
	}
L
Luiz Capitulino 已提交
1478

R
Robert Olsson 已提交
1479 1480
	if (!strcmp(name, "queue_map_min")) {
		len = num_arg(&user_buffer[i], 5, &value);
1481
		if (len < 0)
R
Robert Olsson 已提交
1482
			return len;
1483

R
Robert Olsson 已提交
1484 1485 1486 1487 1488 1489 1490 1491
		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);
1492
		if (len < 0)
R
Robert Olsson 已提交
1493
			return len;
1494

R
Robert Olsson 已提交
1495 1496 1497 1498 1499 1500
		i += len;
		pkt_dev->queue_map_max = value;
		sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
		return count;
	}

1501
	if (!strcmp(name, "mpls")) {
1502
		unsigned int n, cnt;
S
Stephen Hemminger 已提交
1503

1504
		len = get_labels(&user_buffer[i], pkt_dev);
S
Stephen Hemminger 已提交
1505 1506
		if (len < 0)
			return len;
1507
		i += len;
S
Stephen Hemminger 已提交
1508
		cnt = sprintf(pg_result, "OK: mpls=");
1509
		for (n = 0; n < pkt_dev->nr_labels; n++)
S
Stephen Hemminger 已提交
1510 1511 1512
			cnt += sprintf(pg_result + cnt,
				       "%08x%s", ntohl(pkt_dev->labels[n]),
				       n == pkt_dev->nr_labels-1 ? "" : ",");
F
Francesco Fondelli 已提交
1513 1514 1515 1516 1517 1518

		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)
J
Joe Perches 已提交
1519
				pr_debug("VLAN/SVLAN auto turned off\n");
F
Francesco Fondelli 已提交
1520 1521 1522 1523 1524 1525
		}
		return count;
	}

	if (!strcmp(name, "vlan_id")) {
		len = num_arg(&user_buffer[i], 4, &value);
1526
		if (len < 0)
F
Francesco Fondelli 已提交
1527
			return len;
1528

F
Francesco Fondelli 已提交
1529 1530 1531 1532 1533
		i += len;
		if (value <= 4095) {
			pkt_dev->vlan_id = value;  /* turn on VLAN */

			if (debug)
J
Joe Perches 已提交
1534
				pr_debug("VLAN turned on\n");
F
Francesco Fondelli 已提交
1535 1536

			if (debug && pkt_dev->nr_labels)
J
Joe Perches 已提交
1537
				pr_debug("MPLS auto turned off\n");
F
Francesco Fondelli 已提交
1538 1539 1540 1541 1542 1543 1544 1545

			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)
J
Joe Perches 已提交
1546
				pr_debug("VLAN/SVLAN turned off\n");
F
Francesco Fondelli 已提交
1547 1548 1549 1550 1551 1552
		}
		return count;
	}

	if (!strcmp(name, "vlan_p")) {
		len = num_arg(&user_buffer[i], 1, &value);
1553
		if (len < 0)
F
Francesco Fondelli 已提交
1554
			return len;
1555

F
Francesco Fondelli 已提交
1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567
		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);
1568
		if (len < 0)
F
Francesco Fondelli 已提交
1569
			return len;
1570

F
Francesco Fondelli 已提交
1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
		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);
1583
		if (len < 0)
F
Francesco Fondelli 已提交
1584
			return len;
1585

F
Francesco Fondelli 已提交
1586 1587 1588 1589 1590
		i += len;
		if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
			pkt_dev->svlan_id = value;  /* turn on SVLAN */

			if (debug)
J
Joe Perches 已提交
1591
				pr_debug("SVLAN turned on\n");
F
Francesco Fondelli 已提交
1592 1593

			if (debug && pkt_dev->nr_labels)
J
Joe Perches 已提交
1594
				pr_debug("MPLS auto turned off\n");
F
Francesco Fondelli 已提交
1595 1596 1597 1598 1599 1600 1601 1602

			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)
J
Joe Perches 已提交
1603
				pr_debug("VLAN/SVLAN turned off\n");
F
Francesco Fondelli 已提交
1604 1605 1606 1607 1608 1609
		}
		return count;
	}

	if (!strcmp(name, "svlan_p")) {
		len = num_arg(&user_buffer[i], 1, &value);
1610
		if (len < 0)
F
Francesco Fondelli 已提交
1611
			return len;
1612

F
Francesco Fondelli 已提交
1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624
		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);
1625
		if (len < 0)
F
Francesco Fondelli 已提交
1626
			return len;
1627

F
Francesco Fondelli 已提交
1628 1629 1630 1631 1632 1633 1634
		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");
		}
1635 1636 1637
		return count;
	}

F
Francesco Fondelli 已提交
1638 1639 1640
	if (!strcmp(name, "tos")) {
		__u32 tmp_value = 0;
		len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1641
		if (len < 0)
F
Francesco Fondelli 已提交
1642
			return len;
1643

F
Francesco Fondelli 已提交
1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656
		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);
1657
		if (len < 0)
F
Francesco Fondelli 已提交
1658
			return len;
1659

F
Francesco Fondelli 已提交
1660 1661 1662 1663 1664 1665 1666 1667 1668 1669
		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;
	}

J
John Fastabend 已提交
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681
	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;
	}

L
Linus Torvalds 已提交
1682 1683 1684 1685
	sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
	return -EINVAL;
}

1686
static int pktgen_if_open(struct inode *inode, struct file *file)
L
Linus Torvalds 已提交
1687
{
1688 1689
	return single_open(file, pktgen_if_show, PDE(inode)->data);
}
L
Linus Torvalds 已提交
1690

1691
static const struct file_operations pktgen_if_fops = {
L
Luiz Capitulino 已提交
1692 1693 1694 1695 1696 1697
	.owner   = THIS_MODULE,
	.open    = pktgen_if_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pktgen_if_write,
	.release = single_release,
1698
};
L
Linus Torvalds 已提交
1699

1700 1701
static int pktgen_thread_show(struct seq_file *seq, void *v)
{
L
Luiz Capitulino 已提交
1702
	struct pktgen_thread *t = seq->private;
S
Stephen Hemminger 已提交
1703
	const struct pktgen_dev *pkt_dev;
1704 1705

	BUG_ON(!t);
L
Linus Torvalds 已提交
1706

L
Luiz Capitulino 已提交
1707
	seq_printf(seq, "Running: ");
L
Linus Torvalds 已提交
1708

L
Luiz Capitulino 已提交
1709
	if_lock(t);
1710
	list_for_each_entry(pkt_dev, &t->if_list, list)
L
Luiz Capitulino 已提交
1711
		if (pkt_dev->running)
E
Eric Dumazet 已提交
1712
			seq_printf(seq, "%s ", pkt_dev->odevname);
L
Linus Torvalds 已提交
1713

L
Luiz Capitulino 已提交
1714 1715
	seq_printf(seq, "\nStopped: ");

1716
	list_for_each_entry(pkt_dev, &t->if_list, list)
L
Luiz Capitulino 已提交
1717
		if (!pkt_dev->running)
E
Eric Dumazet 已提交
1718
			seq_printf(seq, "%s ", pkt_dev->odevname);
L
Linus Torvalds 已提交
1719 1720

	if (t->result[0])
1721
		seq_printf(seq, "\nResult: %s\n", t->result);
L
Linus Torvalds 已提交
1722
	else
1723
		seq_printf(seq, "\nResult: NA\n");
L
Linus Torvalds 已提交
1724

L
Luiz Capitulino 已提交
1725
	if_unlock(t);
L
Linus Torvalds 已提交
1726

1727
	return 0;
L
Linus Torvalds 已提交
1728 1729
}

1730
static ssize_t pktgen_thread_write(struct file *file,
L
Luiz Capitulino 已提交
1731 1732
				   const char __user * user_buffer,
				   size_t count, loff_t * offset)
L
Linus Torvalds 已提交
1733
{
1734
	struct seq_file *seq = file->private_data;
L
Luiz Capitulino 已提交
1735
	struct pktgen_thread *t = seq->private;
1736
	int i, max, len, ret;
L
Linus Torvalds 已提交
1737
	char name[40];
L
Luiz Capitulino 已提交
1738
	char *pg_result;
1739

L
Linus Torvalds 已提交
1740
	if (count < 1) {
L
Luiz Capitulino 已提交
1741
		//      sprintf(pg_result, "Wrong command format");
L
Linus Torvalds 已提交
1742 1743
		return -EINVAL;
	}
1744

1745 1746
	max = count;
	len = count_trail_chars(user_buffer, max);
L
Luiz Capitulino 已提交
1747
	if (len < 0)
1748 1749
		return len;

1750
	i = len;
1751

L
Linus Torvalds 已提交
1752 1753 1754
	/* Read variable name */

	len = strn_len(&user_buffer[i], sizeof(name) - 1);
L
Luiz Capitulino 已提交
1755
	if (len < 0)
1756
		return len;
L
Luiz Capitulino 已提交
1757

L
Linus Torvalds 已提交
1758 1759 1760 1761
	memset(name, 0, sizeof(name));
	if (copy_from_user(name, &user_buffer[i], len))
		return -EFAULT;
	i += len;
1762

L
Luiz Capitulino 已提交
1763
	max = count - i;
L
Linus Torvalds 已提交
1764
	len = count_trail_chars(&user_buffer[i], max);
L
Luiz Capitulino 已提交
1765
	if (len < 0)
1766 1767
		return len;

L
Linus Torvalds 已提交
1768 1769
	i += len;

1770
	if (debug)
J
Joe Perches 已提交
1771
		pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
L
Linus Torvalds 已提交
1772

L
Luiz Capitulino 已提交
1773
	if (!t) {
J
Joe Perches 已提交
1774
		pr_err("ERROR: No thread\n");
L
Linus Torvalds 已提交
1775 1776 1777 1778 1779 1780
		ret = -EINVAL;
		goto out;
	}

	pg_result = &(t->result[0]);

L
Luiz Capitulino 已提交
1781 1782 1783
	if (!strcmp(name, "add_device")) {
		char f[32];
		memset(f, 0, 32);
L
Linus Torvalds 已提交
1784
		len = strn_len(&user_buffer[i], sizeof(f) - 1);
L
Luiz Capitulino 已提交
1785 1786
		if (len < 0) {
			ret = len;
L
Linus Torvalds 已提交
1787 1788
			goto out;
		}
L
Luiz Capitulino 已提交
1789
		if (copy_from_user(f, &user_buffer[i], len))
L
Linus Torvalds 已提交
1790 1791
			return -EFAULT;
		i += len;
1792
		mutex_lock(&pktgen_thread_lock);
1793
		ret = pktgen_add_device(t, f);
1794
		mutex_unlock(&pktgen_thread_lock);
1795 1796 1797 1798 1799
		if (!ret) {
			ret = count;
			sprintf(pg_result, "OK: add_device=%s", f);
		} else
			sprintf(pg_result, "ERROR: can not add device %s", f);
L
Linus Torvalds 已提交
1800 1801 1802
		goto out;
	}

L
Luiz Capitulino 已提交
1803
	if (!strcmp(name, "rem_device_all")) {
1804
		mutex_lock(&pktgen_thread_lock);
1805
		t->control |= T_REMDEVALL;
1806
		mutex_unlock(&pktgen_thread_lock);
L
Luiz Capitulino 已提交
1807
		schedule_timeout_interruptible(msecs_to_jiffies(125));	/* Propagate thread->control  */
L
Linus Torvalds 已提交
1808
		ret = count;
L
Luiz Capitulino 已提交
1809
		sprintf(pg_result, "OK: rem_device_all");
L
Linus Torvalds 已提交
1810 1811 1812
		goto out;
	}

L
Luiz Capitulino 已提交
1813
	if (!strcmp(name, "max_before_softirq")) {
1814
		sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
L
Luiz Capitulino 已提交
1815
		ret = count;
L
Linus Torvalds 已提交
1816 1817 1818 1819
		goto out;
	}

	ret = -EINVAL;
L
Luiz Capitulino 已提交
1820
out:
L
Linus Torvalds 已提交
1821 1822 1823
	return ret;
}

1824
static int pktgen_thread_open(struct inode *inode, struct file *file)
L
Linus Torvalds 已提交
1825
{
1826
	return single_open(file, pktgen_thread_show, PDE(inode)->data);
L
Linus Torvalds 已提交
1827 1828
}

1829
static const struct file_operations pktgen_thread_fops = {
L
Luiz Capitulino 已提交
1830 1831 1832 1833 1834 1835
	.owner   = THIS_MODULE,
	.open    = pktgen_thread_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pktgen_thread_write,
	.release = single_release,
1836
};
L
Linus Torvalds 已提交
1837 1838

/* Think find or remove for NN */
C
Cong Wang 已提交
1839 1840
static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
					      const char *ifname, int remove)
L
Linus Torvalds 已提交
1841 1842 1843
{
	struct pktgen_thread *t;
	struct pktgen_dev *pkt_dev = NULL;
E
Eric Dumazet 已提交
1844
	bool exact = (remove == FIND);
L
Linus Torvalds 已提交
1845

C
Cong Wang 已提交
1846
	list_for_each_entry(t, &pn->pktgen_threads, th_list) {
E
Eric Dumazet 已提交
1847
		pkt_dev = pktgen_find_dev(t, ifname, exact);
L
Linus Torvalds 已提交
1848
		if (pkt_dev) {
L
Luiz Capitulino 已提交
1849 1850 1851 1852 1853 1854
			if (remove) {
				if_lock(t);
				pkt_dev->removal_mark = 1;
				t->control |= T_REMDEV;
				if_unlock(t);
			}
L
Linus Torvalds 已提交
1855 1856 1857
			break;
		}
	}
L
Luiz Capitulino 已提交
1858
	return pkt_dev;
L
Linus Torvalds 已提交
1859 1860
}

1861 1862 1863
/*
 * mark a device for removal
 */
C
Cong Wang 已提交
1864
static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
L
Linus Torvalds 已提交
1865 1866
{
	struct pktgen_dev *pkt_dev = NULL;
1867 1868 1869
	const int max_tries = 10, msec_per_try = 125;
	int i = 0;

1870
	mutex_lock(&pktgen_thread_lock);
J
Joe Perches 已提交
1871
	pr_debug("%s: marking %s for removal\n", __func__, ifname);
1872

L
Luiz Capitulino 已提交
1873
	while (1) {
1874

C
Cong Wang 已提交
1875
		pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
L
Luiz Capitulino 已提交
1876 1877
		if (pkt_dev == NULL)
			break;	/* success */
1878

1879
		mutex_unlock(&pktgen_thread_lock);
J
Joe Perches 已提交
1880 1881
		pr_debug("%s: waiting for %s to disappear....\n",
			 __func__, ifname);
1882
		schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
1883
		mutex_lock(&pktgen_thread_lock);
1884 1885

		if (++i >= max_tries) {
J
Joe Perches 已提交
1886 1887
			pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
			       __func__, msec_per_try * i, ifname);
1888 1889 1890 1891 1892
			break;
		}

	}

1893
	mutex_unlock(&pktgen_thread_lock);
1894
}
1895

C
Cong Wang 已提交
1896
static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
1897 1898 1899
{
	struct pktgen_thread *t;

C
Cong Wang 已提交
1900
	list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1901 1902 1903 1904 1905 1906
		struct pktgen_dev *pkt_dev;

		list_for_each_entry(pkt_dev, &t->if_list, list) {
			if (pkt_dev->odev != dev)
				continue;

C
Cong Wang 已提交
1907
			remove_proc_entry(pkt_dev->entry->name, pn->proc_dir);
1908

A
Alexey Dobriyan 已提交
1909
			pkt_dev->entry = proc_create_data(dev->name, 0600,
C
Cong Wang 已提交
1910
							  pn->proc_dir,
A
Alexey Dobriyan 已提交
1911 1912
							  &pktgen_if_fops,
							  pkt_dev);
1913
			if (!pkt_dev->entry)
J
Joe Perches 已提交
1914 1915
				pr_err("can't move proc entry for '%s'\n",
				       dev->name);
1916 1917 1918
			break;
		}
	}
L
Linus Torvalds 已提交
1919 1920
}

L
Luiz Capitulino 已提交
1921 1922
static int pktgen_device_event(struct notifier_block *unused,
			       unsigned long event, void *ptr)
L
Linus Torvalds 已提交
1923
{
1924
	struct net_device *dev = ptr;
C
Cong Wang 已提交
1925
	struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
L
Linus Torvalds 已提交
1926

C
Cong Wang 已提交
1927
	if (pn->pktgen_exiting)
1928 1929
		return NOTIFY_DONE;

L
Linus Torvalds 已提交
1930 1931 1932 1933 1934
	/* It is OK that we do not hold the group lock right now,
	 * as we run under the RTNL lock.
	 */

	switch (event) {
1935
	case NETDEV_CHANGENAME:
C
Cong Wang 已提交
1936
		pktgen_change_name(pn, dev);
L
Linus Torvalds 已提交
1937
		break;
L
Luiz Capitulino 已提交
1938

L
Linus Torvalds 已提交
1939
	case NETDEV_UNREGISTER:
C
Cong Wang 已提交
1940
		pktgen_mark_device(pn, dev->name);
L
Linus Torvalds 已提交
1941
		break;
1942
	}
L
Linus Torvalds 已提交
1943 1944 1945 1946

	return NOTIFY_DONE;
}

C
Cong Wang 已提交
1947 1948
static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
						 struct pktgen_dev *pkt_dev,
1949
						 const char *ifname)
R
Robert Olsson 已提交
1950 1951
{
	char b[IFNAMSIZ+5];
1952
	int i;
R
Robert Olsson 已提交
1953

1954 1955
	for (i = 0; ifname[i] != '@'; i++) {
		if (i == IFNAMSIZ)
R
Robert Olsson 已提交
1956 1957 1958 1959 1960 1961
			break;

		b[i] = ifname[i];
	}
	b[i] = 0;

C
Cong Wang 已提交
1962
	return dev_get_by_name(pn->net, b);
R
Robert Olsson 已提交
1963 1964 1965
}


L
Linus Torvalds 已提交
1966 1967
/* Associate pktgen_dev with a device. */

C
Cong Wang 已提交
1968 1969
static int pktgen_setup_dev(const struct pktgen_net *pn,
			    struct pktgen_dev *pkt_dev, const char *ifname)
L
Luiz Capitulino 已提交
1970
{
L
Linus Torvalds 已提交
1971
	struct net_device *odev;
1972
	int err;
L
Linus Torvalds 已提交
1973 1974 1975 1976

	/* Clean old setups */
	if (pkt_dev->odev) {
		dev_put(pkt_dev->odev);
L
Luiz Capitulino 已提交
1977 1978
		pkt_dev->odev = NULL;
	}
L
Linus Torvalds 已提交
1979

C
Cong Wang 已提交
1980
	odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
L
Linus Torvalds 已提交
1981
	if (!odev) {
J
Joe Perches 已提交
1982
		pr_err("no such netdevice: \"%s\"\n", ifname);
1983
		return -ENODEV;
L
Linus Torvalds 已提交
1984
	}
1985

L
Linus Torvalds 已提交
1986
	if (odev->type != ARPHRD_ETHER) {
J
Joe Perches 已提交
1987
		pr_err("not an ethernet device: \"%s\"\n", ifname);
1988 1989
		err = -EINVAL;
	} else if (!netif_running(odev)) {
J
Joe Perches 已提交
1990
		pr_err("device is down: \"%s\"\n", ifname);
1991 1992 1993 1994
		err = -ENETDOWN;
	} else {
		pkt_dev->odev = odev;
		return 0;
L
Linus Torvalds 已提交
1995 1996 1997
	}

	dev_put(odev);
1998
	return err;
L
Linus Torvalds 已提交
1999 2000 2001 2002 2003 2004 2005
}

/* 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)
{
2006 2007
	int ntxq;

L
Luiz Capitulino 已提交
2008
	if (!pkt_dev->odev) {
J
Joe Perches 已提交
2009
		pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
L
Luiz Capitulino 已提交
2010 2011 2012 2013 2014
		sprintf(pkt_dev->result,
			"ERROR: pkt_dev->odev == NULL in setup_inject.\n");
		return;
	}

2015 2016
	/* make sure that we don't pick a non-existing transmit queue */
	ntxq = pkt_dev->odev->real_num_tx_queues;
R
Robert Olsson 已提交
2017

2018
	if (ntxq <= pkt_dev->queue_map_min) {
J
Joe Perches 已提交
2019 2020 2021
		pr_warning("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);
2022
		pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
2023
	}
2024
	if (pkt_dev->queue_map_max >= ntxq) {
J
Joe Perches 已提交
2025 2026 2027
		pr_warning("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);
2028
		pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
2029 2030
	}

L
Luiz Capitulino 已提交
2031
	/* Default to the interface's mac if not explicitly set. */
L
Linus Torvalds 已提交
2032

2033
	if (is_zero_ether_addr(pkt_dev->src_mac))
L
Luiz Capitulino 已提交
2034
		memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
L
Linus Torvalds 已提交
2035

L
Luiz Capitulino 已提交
2036
	/* Set up Dest MAC */
2037
	memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
L
Linus Torvalds 已提交
2038

L
Luiz Capitulino 已提交
2039
	if (pkt_dev->flags & F_IPV6) {
2040 2041 2042
		int i, set = 0, err = 1;
		struct inet6_dev *idev;

2043 2044 2045 2046 2047 2048 2049
		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;
		}

L
Luiz Capitulino 已提交
2050 2051
		for (i = 0; i < IN6_ADDR_HSIZE; i++)
			if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
L
Linus Torvalds 已提交
2052 2053 2054 2055
				set = 1;
				break;
			}

L
Luiz Capitulino 已提交
2056 2057
		if (!set) {

L
Linus Torvalds 已提交
2058 2059 2060 2061 2062 2063
			/*
			 * Use linklevel address if unconfigured.
			 *
			 * use ipv6_get_lladdr if/when it's get exported
			 */

2064
			rcu_read_lock();
2065 2066
			idev = __in6_dev_get(pkt_dev->odev);
			if (idev) {
L
Linus Torvalds 已提交
2067 2068 2069
				struct inet6_ifaddr *ifp;

				read_lock_bh(&idev->lock);
2070 2071
				list_for_each_entry(ifp, &idev->addr_list, if_list) {
					if ((ifp->scope & IFA_LINK) &&
2072
					    !(ifp->flags & IFA_F_TENTATIVE)) {
A
Alexey Dobriyan 已提交
2073
						pkt_dev->cur_in6_saddr = ifp->addr;
L
Linus Torvalds 已提交
2074 2075 2076 2077 2078 2079
						err = 0;
						break;
					}
				}
				read_unlock_bh(&idev->lock);
			}
2080
			rcu_read_unlock();
L
Luiz Capitulino 已提交
2081
			if (err)
J
Joe Perches 已提交
2082
				pr_err("ERROR: IPv6 link address not available\n");
L
Linus Torvalds 已提交
2083
		}
L
Luiz Capitulino 已提交
2084
	} else {
2085 2086 2087 2088 2089 2090 2091
		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;
		}

L
Linus Torvalds 已提交
2092 2093 2094
		pkt_dev->saddr_min = 0;
		pkt_dev->saddr_max = 0;
		if (strlen(pkt_dev->src_min) == 0) {
L
Luiz Capitulino 已提交
2095 2096

			struct in_device *in_dev;
L
Linus Torvalds 已提交
2097 2098

			rcu_read_lock();
2099
			in_dev = __in_dev_get_rcu(pkt_dev->odev);
L
Linus Torvalds 已提交
2100 2101
			if (in_dev) {
				if (in_dev->ifa_list) {
L
Luiz Capitulino 已提交
2102 2103
					pkt_dev->saddr_min =
					    in_dev->ifa_list->ifa_address;
L
Linus Torvalds 已提交
2104 2105 2106 2107
					pkt_dev->saddr_max = pkt_dev->saddr_min;
				}
			}
			rcu_read_unlock();
L
Luiz Capitulino 已提交
2108
		} else {
L
Linus Torvalds 已提交
2109 2110 2111 2112 2113 2114 2115
			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);
	}
L
Luiz Capitulino 已提交
2116
	/* Initialize current values. */
2117 2118 2119 2120
	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;

L
Luiz Capitulino 已提交
2121 2122 2123 2124 2125 2126
	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;
L
Linus Torvalds 已提交
2127 2128 2129
	pkt_dev->nflows = 0;
}

2130 2131 2132

static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
{
2133
	ktime_t start_time, end_time;
E
Eric Dumazet 已提交
2134
	s64 remaining;
S
Stephen Hemminger 已提交
2135 2136 2137 2138 2139
	struct hrtimer_sleeper t;

	hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	hrtimer_set_expires(&t.timer, spin_until);

2140
	remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
E
Eric Dumazet 已提交
2141 2142
	if (remaining <= 0) {
		pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
S
Stephen Hemminger 已提交
2143
		return;
E
Eric Dumazet 已提交
2144
	}
S
Stephen Hemminger 已提交
2145

D
Daniel Borkmann 已提交
2146
	start_time = ktime_get();
E
Eric Dumazet 已提交
2147 2148 2149
	if (remaining < 100000) {
		/* for small delays (<100us), just loop until limit is reached */
		do {
D
Daniel Borkmann 已提交
2150 2151
			end_time = ktime_get();
		} while (ktime_compare(end_time, spin_until) < 0);
E
Eric Dumazet 已提交
2152
	} else {
S
Stephen Hemminger 已提交
2153 2154 2155 2156 2157 2158 2159 2160 2161
		/* see do_nanosleep */
		hrtimer_init_sleeper(&t, current);
		do {
			set_current_state(TASK_INTERRUPTIBLE);
			hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
			if (!hrtimer_active(&t.timer))
				t.task = NULL;

			if (likely(t.task))
L
Linus Torvalds 已提交
2162 2163
				schedule();

S
Stephen Hemminger 已提交
2164 2165 2166
			hrtimer_cancel(&t.timer);
		} while (t.task && pkt_dev->running && !signal_pending(current));
		__set_current_state(TASK_RUNNING);
D
Daniel Borkmann 已提交
2167
		end_time = ktime_get();
L
Linus Torvalds 已提交
2168
	}
2169 2170

	pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
2171
	pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
L
Linus Torvalds 已提交
2172 2173
}

2174 2175
static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
{
J
Jamal Hadi Salim 已提交
2176
	pkt_dev->pkt_overhead = 0;
2177 2178 2179 2180 2181
	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);
}

S
Stephen Hemminger 已提交
2182
static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
2183
{
S
Stephen Hemminger 已提交
2184
	return !!(pkt_dev->flows[flow].flags & F_INIT);
2185 2186 2187 2188 2189 2190 2191 2192 2193 2194
}

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;
R
Robert Olsson 已提交
2195
			pkt_dev->flows[flow].flags = 0;
2196 2197 2198 2199 2200 2201
			pkt_dev->curfl += 1;
			if (pkt_dev->curfl >= pkt_dev->cflows)
				pkt_dev->curfl = 0; /*reset */
		}
	} else {
		flow = random32() % pkt_dev->cflows;
R
Robert Olsson 已提交
2202
		pkt_dev->curfl = flow;
2203

R
Robert Olsson 已提交
2204
		if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
2205
			pkt_dev->flows[flow].count = 0;
R
Robert Olsson 已提交
2206 2207
			pkt_dev->flows[flow].flags = 0;
		}
2208 2209 2210 2211 2212
	}

	return pkt_dev->curfl;
}

J
Jamal Hadi Salim 已提交
2213 2214 2215 2216 2217

#ifdef CONFIG_XFRM
/* If there was already an IPSEC SA, we keep it as is, else
 * we go look for it ...
*/
2218
#define DUMMY_MARK 0
2219
static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
J
Jamal Hadi Salim 已提交
2220 2221
{
	struct xfrm_state *x = pkt_dev->flows[flow].x;
C
Cong Wang 已提交
2222
	struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
J
Jamal Hadi Salim 已提交
2223 2224
	if (!x) {
		/*slow path: we dont already have xfrm_state*/
C
Cong Wang 已提交
2225
		x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2226
					(xfrm_address_t *)&pkt_dev->cur_daddr,
J
Jamal Hadi Salim 已提交
2227 2228 2229 2230 2231 2232 2233
					(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);
2234
			pkt_dev->pkt_overhead += x->props.header_len;
J
Jamal Hadi Salim 已提交
2235 2236 2237 2238 2239
		}

	}
}
#endif
2240 2241
static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
{
R
Robert Olsson 已提交
2242 2243 2244 2245

	if (pkt_dev->flags & F_QUEUE_MAP_CPU)
		pkt_dev->cur_queue_map = smp_processor_id();

E
Eric Dumazet 已提交
2246
	else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259
		__u16 t;
		if (pkt_dev->flags & F_QUEUE_MAP_RND) {
			t = random32() %
				(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;
	}
R
Robert Olsson 已提交
2260
	pkt_dev->cur_queue_map  = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
2261 2262
}

L
Linus Torvalds 已提交
2263 2264 2265
/* Increment/randomize headers according to flags and current values
 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
 */
L
Luiz Capitulino 已提交
2266 2267 2268 2269 2270
static void mod_cur_headers(struct pktgen_dev *pkt_dev)
{
	__u32 imn;
	__u32 imx;
	int flow = 0;
L
Linus Torvalds 已提交
2271

2272 2273
	if (pkt_dev->cflows)
		flow = f_pick(pkt_dev);
L
Linus Torvalds 已提交
2274 2275

	/*  Deal with source MAC */
L
Luiz Capitulino 已提交
2276 2277 2278 2279 2280
	if (pkt_dev->src_mac_count > 1) {
		__u32 mc;
		__u32 tmp;

		if (pkt_dev->flags & F_MACSRC_RND)
S
Stephen Hemminger 已提交
2281
			mc = random32() % pkt_dev->src_mac_count;
L
Luiz Capitulino 已提交
2282 2283
		else {
			mc = pkt_dev->cur_src_mac_offset++;
R
Robert Olsson 已提交
2284
			if (pkt_dev->cur_src_mac_offset >=
L
Luiz Capitulino 已提交
2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
			    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)
S
Stephen Hemminger 已提交
2307
			mc = random32() % pkt_dev->dst_mac_count;
L
Luiz Capitulino 已提交
2308 2309 2310

		else {
			mc = pkt_dev->cur_dst_mac_offset++;
R
Robert Olsson 已提交
2311
			if (pkt_dev->cur_dst_mac_offset >=
L
Luiz Capitulino 已提交
2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328
			    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;
	}

2329
	if (pkt_dev->flags & F_MPLS_RND) {
2330
		unsigned int i;
2331
		for (i = 0; i < pkt_dev->nr_labels; i++)
2332 2333
			if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
				pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
S
Stephen Hemminger 已提交
2334
					     ((__force __be32)random32() &
2335 2336 2337
						      htonl(0x000fffff));
	}

F
Francesco Fondelli 已提交
2338
	if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
S
Stephen Hemminger 已提交
2339
		pkt_dev->vlan_id = random32() & (4096-1);
F
Francesco Fondelli 已提交
2340 2341 2342
	}

	if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
S
Stephen Hemminger 已提交
2343
		pkt_dev->svlan_id = random32() & (4096 - 1);
F
Francesco Fondelli 已提交
2344 2345
	}

L
Luiz Capitulino 已提交
2346 2347
	if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
		if (pkt_dev->flags & F_UDPSRC_RND)
S
Stephen Hemminger 已提交
2348 2349 2350
			pkt_dev->cur_udp_src = random32() %
				(pkt_dev->udp_src_max - pkt_dev->udp_src_min)
				+ pkt_dev->udp_src_min;
L
Luiz Capitulino 已提交
2351 2352

		else {
L
Linus Torvalds 已提交
2353 2354 2355
			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;
L
Luiz Capitulino 已提交
2356 2357 2358 2359 2360
		}
	}

	if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
		if (pkt_dev->flags & F_UDPDST_RND) {
S
Stephen Hemminger 已提交
2361 2362 2363
			pkt_dev->cur_udp_dst = random32() %
				(pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
				+ pkt_dev->udp_dst_min;
L
Luiz Capitulino 已提交
2364
		} else {
L
Linus Torvalds 已提交
2365
			pkt_dev->cur_udp_dst++;
L
Luiz Capitulino 已提交
2366
			if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
L
Linus Torvalds 已提交
2367
				pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
L
Luiz Capitulino 已提交
2368 2369
		}
	}
L
Linus Torvalds 已提交
2370 2371 2372

	if (!(pkt_dev->flags & F_IPV6)) {

2373 2374 2375
		imn = ntohl(pkt_dev->saddr_min);
		imx = ntohl(pkt_dev->saddr_max);
		if (imn < imx) {
L
Linus Torvalds 已提交
2376
			__u32 t;
L
Luiz Capitulino 已提交
2377
			if (pkt_dev->flags & F_IPSRC_RND)
S
Stephen Hemminger 已提交
2378
				t = random32() % (imx - imn) + imn;
L
Linus Torvalds 已提交
2379 2380 2381
			else {
				t = ntohl(pkt_dev->cur_saddr);
				t++;
2382
				if (t > imx)
L
Linus Torvalds 已提交
2383
					t = imn;
2384

L
Linus Torvalds 已提交
2385 2386 2387
			}
			pkt_dev->cur_saddr = htonl(t);
		}
L
Luiz Capitulino 已提交
2388

2389
		if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
L
Linus Torvalds 已提交
2390 2391
			pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
		} else {
A
Al Viro 已提交
2392 2393 2394
			imn = ntohl(pkt_dev->daddr_min);
			imx = ntohl(pkt_dev->daddr_max);
			if (imn < imx) {
L
Linus Torvalds 已提交
2395
				__u32 t;
A
Al Viro 已提交
2396
				__be32 s;
L
Linus Torvalds 已提交
2397 2398
				if (pkt_dev->flags & F_IPDST_RND) {

S
Stephen Hemminger 已提交
2399
					t = random32() % (imx - imn) + imn;
A
Al Viro 已提交
2400
					s = htonl(t);
L
Linus Torvalds 已提交
2401

2402 2403
					while (ipv4_is_loopback(s) ||
					       ipv4_is_multicast(s) ||
2404
					       ipv4_is_lbcast(s) ||
2405 2406
					       ipv4_is_zeronet(s) ||
					       ipv4_is_local_multicast(s)) {
S
Stephen Hemminger 已提交
2407
						t = random32() % (imx - imn) + imn;
A
Al Viro 已提交
2408
						s = htonl(t);
L
Linus Torvalds 已提交
2409
					}
A
Al Viro 已提交
2410 2411
					pkt_dev->cur_daddr = s;
				} else {
L
Linus Torvalds 已提交
2412 2413 2414 2415 2416 2417 2418 2419
					t = ntohl(pkt_dev->cur_daddr);
					t++;
					if (t > imx) {
						t = imn;
					}
					pkt_dev->cur_daddr = htonl(t);
				}
			}
L
Luiz Capitulino 已提交
2420
			if (pkt_dev->cflows) {
2421
				pkt_dev->flows[flow].flags |= F_INIT;
L
Luiz Capitulino 已提交
2422 2423
				pkt_dev->flows[flow].cur_daddr =
				    pkt_dev->cur_daddr;
J
Jamal Hadi Salim 已提交
2424 2425 2426 2427
#ifdef CONFIG_XFRM
				if (pkt_dev->flags & F_IPSEC_ON)
					get_ipsec_sa(pkt_dev, flow);
#endif
L
Linus Torvalds 已提交
2428 2429 2430
				pkt_dev->nflows++;
			}
		}
L
Luiz Capitulino 已提交
2431 2432
	} else {		/* IPV6 * */

J
Joe Perches 已提交
2433
		if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
L
Linus Torvalds 已提交
2434 2435 2436 2437
			int i;

			/* Only random destinations yet */

L
Luiz Capitulino 已提交
2438
			for (i = 0; i < 4; i++) {
L
Linus Torvalds 已提交
2439
				pkt_dev->cur_in6_daddr.s6_addr32[i] =
S
Stephen Hemminger 已提交
2440
				    (((__force __be32)random32() |
L
Luiz Capitulino 已提交
2441 2442
				      pkt_dev->min_in6_daddr.s6_addr32[i]) &
				     pkt_dev->max_in6_daddr.s6_addr32[i]);
L
Linus Torvalds 已提交
2443
			}
L
Luiz Capitulino 已提交
2444
		}
L
Linus Torvalds 已提交
2445 2446
	}

L
Luiz Capitulino 已提交
2447 2448 2449
	if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
		__u32 t;
		if (pkt_dev->flags & F_TXSIZE_RND) {
S
Stephen Hemminger 已提交
2450 2451 2452
			t = random32() %
				(pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
				+ pkt_dev->min_pkt_size;
L
Luiz Capitulino 已提交
2453
		} else {
L
Linus Torvalds 已提交
2454
			t = pkt_dev->cur_pkt_size + 1;
L
Luiz Capitulino 已提交
2455
			if (t > pkt_dev->max_pkt_size)
L
Linus Torvalds 已提交
2456
				t = pkt_dev->min_pkt_size;
L
Luiz Capitulino 已提交
2457 2458 2459
		}
		pkt_dev->cur_pkt_size = t;
	}
L
Linus Torvalds 已提交
2460

2461
	set_cur_queue_map(pkt_dev);
R
Robert Olsson 已提交
2462

L
Linus Torvalds 已提交
2463 2464 2465
	pkt_dev->flows[flow].count++;
}

J
Jamal Hadi Salim 已提交
2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481

#ifdef CONFIG_XFRM
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;

	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)
		return 0;

	spin_lock(&x->lock);

2482
	err = x->outer_mode->output(x, skb);
J
Jamal Hadi Salim 已提交
2483 2484 2485 2486 2487 2488
	if (err)
		goto error;
	err = x->type->output(x, skb);
	if (err)
		goto error;

2489
	x->curlft.bytes += skb->len;
J
Jamal Hadi Salim 已提交
2490 2491 2492 2493 2494 2495
	x->curlft.packets++;
error:
	spin_unlock(&x->lock);
	return err;
}

S
Stephen Hemminger 已提交
2496
static void free_SAs(struct pktgen_dev *pkt_dev)
J
Jamal Hadi Salim 已提交
2497 2498 2499
{
	if (pkt_dev->cflows) {
		/* let go of the SAs if we have them */
2500 2501
		int i;
		for (i = 0; i < pkt_dev->cflows; i++) {
J
Jamal Hadi Salim 已提交
2502 2503 2504 2505 2506 2507 2508 2509 2510
			struct xfrm_state *x = pkt_dev->flows[i].x;
			if (x) {
				xfrm_state_put(x);
				pkt_dev->flows[i].x = NULL;
			}
		}
	}
}

S
Stephen Hemminger 已提交
2511
static int process_ipsec(struct pktgen_dev *pkt_dev,
J
Jamal Hadi Salim 已提交
2512 2513 2514 2515 2516 2517 2518 2519 2520
			      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) {
			int ret;
			__u8 *eth;
			nhead = x->props.header_len - skb_headroom(skb);
2521
			if (nhead > 0) {
J
Jamal Hadi Salim 已提交
2522 2523
				ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
				if (ret < 0) {
J
Joe Perches 已提交
2524 2525
					pr_err("Error expanding ipsec packet %d\n",
					       ret);
2526
					goto err;
J
Jamal Hadi Salim 已提交
2527 2528 2529 2530 2531 2532 2533
				}
			}

			/* ipsec is not expecting ll header */
			skb_pull(skb, ETH_HLEN);
			ret = pktgen_output_ipsec(skb, pkt_dev);
			if (ret) {
J
Joe Perches 已提交
2534
				pr_err("Error creating ipsec packet %d\n", ret);
2535
				goto err;
J
Jamal Hadi Salim 已提交
2536 2537 2538 2539
			}
			/* restore ll */
			eth = (__u8 *) skb_push(skb, ETH_HLEN);
			memcpy(eth, pkt_dev->hh, 12);
2540
			*(u16 *) &eth[12] = protocol;
J
Jamal Hadi Salim 已提交
2541 2542 2543
		}
	}
	return 1;
2544 2545 2546
err:
	kfree_skb(skb);
	return 0;
J
Jamal Hadi Salim 已提交
2547 2548 2549
}
#endif

2550 2551
static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
{
2552
	unsigned int i;
2553
	for (i = 0; i < pkt_dev->nr_labels; i++)
2554
		*mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2555

2556 2557 2558 2559
	mpls--;
	*mpls |= MPLS_STACK_BOTTOM;
}

A
Al Viro 已提交
2560 2561 2562 2563 2564 2565
static inline __be16 build_tci(unsigned int id, unsigned int cfi,
			       unsigned int prio)
{
	return htons(id | (cfi << 12) | (prio << 13));
}

E
Eric Dumazet 已提交
2566 2567 2568 2569 2570 2571 2572 2573 2574 2575
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) {
2576
		memset(skb_put(skb, datalen), 0, datalen);
E
Eric Dumazet 已提交
2577 2578 2579
	} else {
		int frags = pkt_dev->nfrags;
		int i, len;
2580
		int frag_len;
E
Eric Dumazet 已提交
2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591


		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;
2592 2593
		frag_len = (datalen/frags) < PAGE_SIZE ?
			   (datalen/frags) : PAGE_SIZE;
E
Eric Dumazet 已提交
2594 2595 2596 2597 2598 2599 2600 2601 2602 2603
		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;
			}
2604
			get_page(pkt_dev->page);
2605
			skb_frag_set_page(skb, i, pkt_dev->page);
E
Eric Dumazet 已提交
2606
			skb_shinfo(skb)->frags[i].page_offset = 0;
2607 2608
			/*last fragment, fill rest of data*/
			if (i == (frags - 1))
E
Eric Dumazet 已提交
2609 2610
				skb_frag_size_set(&skb_shinfo(skb)->frags[i],
				    (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
2611
			else
E
Eric Dumazet 已提交
2612 2613 2614 2615
				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]);
E
Eric Dumazet 已提交
2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631
			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);

	do_gettimeofday(&timestamp);
	pgh->tv_sec = htonl(timestamp.tv_sec);
	pgh->tv_usec = htonl(timestamp.tv_usec);
}

L
Luiz Capitulino 已提交
2632 2633
static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
					struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
2634 2635 2636 2637 2638 2639
{
	struct sk_buff *skb = NULL;
	__u8 *eth;
	struct udphdr *udph;
	int datalen, iplen;
	struct iphdr *iph;
2640
	__be16 protocol = htons(ETH_P_IP);
2641
	__be32 *mpls;
F
Francesco Fondelli 已提交
2642 2643 2644 2645
	__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 */
2646
	u16 queue_map;
2647 2648

	if (pkt_dev->nr_labels)
2649
		protocol = htons(ETH_P_MPLS_UC);
L
Luiz Capitulino 已提交
2650

F
Francesco Fondelli 已提交
2651
	if (pkt_dev->vlan_id != 0xffff)
2652
		protocol = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2653

2654 2655 2656 2657
	/* Update any of the values, used when we're incrementing various
	 * fields.
	 */
	mod_cur_headers(pkt_dev);
2658
	queue_map = pkt_dev->cur_queue_map;
2659

2660
	datalen = (odev->hard_header_len + 16) & ~0xf;
R
Robert Olsson 已提交
2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681

	if (pkt_dev->flags & F_NODE) {
		int node;

		if (pkt_dev->node >= 0)
			node = pkt_dev->node;
		else
			node =  numa_node_id();

		skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
				  + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
		if (likely(skb)) {
			skb_reserve(skb, NET_SKB_PAD);
			skb->dev = odev;
		}
	}
	else
	  skb = __netdev_alloc_skb(odev,
				   pkt_dev->cur_pkt_size + 64
				   + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);

L
Linus Torvalds 已提交
2682 2683 2684 2685
	if (!skb) {
		sprintf(pkt_dev->result, "No memory");
		return NULL;
	}
J
Junchang Wang 已提交
2686
	prefetchw(skb->data);
L
Linus Torvalds 已提交
2687

2688
	skb_reserve(skb, datalen);
L
Linus Torvalds 已提交
2689 2690 2691

	/*  Reserve for ethernet and IP header  */
	eth = (__u8 *) skb_push(skb, 14);
2692 2693 2694
	mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
	if (pkt_dev->nr_labels)
		mpls_push(mpls, pkt_dev);
F
Francesco Fondelli 已提交
2695 2696

	if (pkt_dev->vlan_id != 0xffff) {
2697
		if (pkt_dev->svlan_id != 0xffff) {
F
Francesco Fondelli 已提交
2698
			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2699 2700 2701
			*svlan_tci = build_tci(pkt_dev->svlan_id,
					       pkt_dev->svlan_cfi,
					       pkt_dev->svlan_p);
F
Francesco Fondelli 已提交
2702
			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2703
			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2704 2705
		}
		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2706 2707 2708
		*vlan_tci = build_tci(pkt_dev->vlan_id,
				      pkt_dev->vlan_cfi,
				      pkt_dev->vlan_p);
F
Francesco Fondelli 已提交
2709
		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2710
		*vlan_encapsulated_proto = htons(ETH_P_IP);
F
Francesco Fondelli 已提交
2711 2712
	}

2713
	skb->network_header = skb->tail;
2714
	skb->transport_header = skb->network_header + sizeof(struct iphdr);
2715
	skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
2716
	skb_set_queue_mapping(skb, queue_map);
J
John Fastabend 已提交
2717 2718
	skb->priority = pkt_dev->skb_priority;

2719 2720
	iph = ip_hdr(skb);
	udph = udp_hdr(skb);
L
Linus Torvalds 已提交
2721 2722

	memcpy(eth, pkt_dev->hh, 12);
A
Al Viro 已提交
2723
	*(__be16 *) & eth[12] = protocol;
L
Linus Torvalds 已提交
2724

2725 2726
	/* Eth + IPh + UDPh + mpls */
	datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
2727
		  pkt_dev->pkt_overhead;
2728
	if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
L
Linus Torvalds 已提交
2729
		datalen = sizeof(struct pktgen_hdr);
L
Luiz Capitulino 已提交
2730

L
Linus Torvalds 已提交
2731 2732
	udph->source = htons(pkt_dev->cur_udp_src);
	udph->dest = htons(pkt_dev->cur_udp_dst);
L
Luiz Capitulino 已提交
2733 2734
	udph->len = htons(datalen + 8);	/* DATA + udphdr */
	udph->check = 0;	/* No checksum */
L
Linus Torvalds 已提交
2735 2736 2737 2738

	iph->ihl = 5;
	iph->version = 4;
	iph->ttl = 32;
F
Francesco Fondelli 已提交
2739
	iph->tos = pkt_dev->tos;
L
Luiz Capitulino 已提交
2740
	iph->protocol = IPPROTO_UDP;	/* UDP */
L
Linus Torvalds 已提交
2741 2742
	iph->saddr = pkt_dev->cur_saddr;
	iph->daddr = pkt_dev->cur_daddr;
E
Eric Dumazet 已提交
2743 2744
	iph->id = htons(pkt_dev->ip_id);
	pkt_dev->ip_id++;
L
Linus Torvalds 已提交
2745 2746 2747 2748
	iph->frag_off = 0;
	iplen = 20 + 8 + datalen;
	iph->tot_len = htons(iplen);
	iph->check = 0;
L
Luiz Capitulino 已提交
2749
	iph->check = ip_fast_csum((void *)iph, iph->ihl);
2750
	skb->protocol = protocol;
2751
	skb->mac_header = (skb->network_header - ETH_HLEN -
2752
			   pkt_dev->pkt_overhead);
L
Linus Torvalds 已提交
2753 2754
	skb->dev = odev;
	skb->pkt_type = PACKET_HOST;
E
Eric Dumazet 已提交
2755
	pktgen_finalize_skb(pkt_dev, skb, datalen);
L
Linus Torvalds 已提交
2756

J
Jamal Hadi Salim 已提交
2757 2758 2759 2760 2761
#ifdef CONFIG_XFRM
	if (!process_ipsec(pkt_dev, skb, protocol))
		return NULL;
#endif

L
Linus Torvalds 已提交
2762 2763 2764
	return skb;
}

L
Luiz Capitulino 已提交
2765 2766
static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
					struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
2767 2768 2769 2770 2771 2772
{
	struct sk_buff *skb = NULL;
	__u8 *eth;
	struct udphdr *udph;
	int datalen;
	struct ipv6hdr *iph;
2773
	__be16 protocol = htons(ETH_P_IPV6);
2774
	__be32 *mpls;
F
Francesco Fondelli 已提交
2775 2776 2777 2778
	__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 */
2779
	u16 queue_map;
2780 2781

	if (pkt_dev->nr_labels)
2782
		protocol = htons(ETH_P_MPLS_UC);
2783

F
Francesco Fondelli 已提交
2784
	if (pkt_dev->vlan_id != 0xffff)
2785
		protocol = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2786

2787 2788 2789 2790
	/* Update any of the values, used when we're incrementing various
	 * fields.
	 */
	mod_cur_headers(pkt_dev);
2791
	queue_map = pkt_dev->cur_queue_map;
2792

S
Stephen Hemminger 已提交
2793 2794 2795
	skb = __netdev_alloc_skb(odev,
				 pkt_dev->cur_pkt_size + 64
				 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
L
Linus Torvalds 已提交
2796 2797 2798 2799
	if (!skb) {
		sprintf(pkt_dev->result, "No memory");
		return NULL;
	}
J
Junchang Wang 已提交
2800
	prefetchw(skb->data);
L
Linus Torvalds 已提交
2801 2802 2803 2804 2805

	skb_reserve(skb, 16);

	/*  Reserve for ethernet and IP header  */
	eth = (__u8 *) skb_push(skb, 14);
2806 2807 2808
	mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
	if (pkt_dev->nr_labels)
		mpls_push(mpls, pkt_dev);
F
Francesco Fondelli 已提交
2809 2810

	if (pkt_dev->vlan_id != 0xffff) {
2811
		if (pkt_dev->svlan_id != 0xffff) {
F
Francesco Fondelli 已提交
2812
			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2813 2814 2815
			*svlan_tci = build_tci(pkt_dev->svlan_id,
					       pkt_dev->svlan_cfi,
					       pkt_dev->svlan_p);
F
Francesco Fondelli 已提交
2816
			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2817
			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2818 2819
		}
		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2820 2821 2822
		*vlan_tci = build_tci(pkt_dev->vlan_id,
				      pkt_dev->vlan_cfi,
				      pkt_dev->vlan_p);
F
Francesco Fondelli 已提交
2823
		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2824
		*vlan_encapsulated_proto = htons(ETH_P_IPV6);
F
Francesco Fondelli 已提交
2825 2826
	}

2827
	skb->network_header = skb->tail;
2828
	skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
2829
	skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
2830
	skb_set_queue_mapping(skb, queue_map);
J
John Fastabend 已提交
2831
	skb->priority = pkt_dev->skb_priority;
2832 2833
	iph = ipv6_hdr(skb);
	udph = udp_hdr(skb);
L
Linus Torvalds 已提交
2834 2835

	memcpy(eth, pkt_dev->hh, 12);
2836
	*(__be16 *) &eth[12] = protocol;
2837

2838 2839 2840
	/* Eth + IPh + UDPh + mpls */
	datalen = pkt_dev->cur_pkt_size - 14 -
		  sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
2841
		  pkt_dev->pkt_overhead;
L
Linus Torvalds 已提交
2842

2843
	if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
L
Linus Torvalds 已提交
2844
		datalen = sizeof(struct pktgen_hdr);
2845
		net_info_ratelimited("increased datalen to %d\n", datalen);
L
Linus Torvalds 已提交
2846 2847 2848 2849
	}

	udph->source = htons(pkt_dev->cur_udp_src);
	udph->dest = htons(pkt_dev->cur_udp_dst);
L
Luiz Capitulino 已提交
2850 2851
	udph->len = htons(datalen + sizeof(struct udphdr));
	udph->check = 0;	/* No checksum */
L
Linus Torvalds 已提交
2852

2853
	*(__be32 *) iph = htonl(0x60000000);	/* Version + flow */
L
Linus Torvalds 已提交
2854

F
Francesco Fondelli 已提交
2855 2856
	if (pkt_dev->traffic_class) {
		/* Version + traffic class + flow (0) */
A
Al Viro 已提交
2857
		*(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
F
Francesco Fondelli 已提交
2858 2859
	}

L
Linus Torvalds 已提交
2860 2861 2862 2863 2864
	iph->hop_limit = 32;

	iph->payload_len = htons(sizeof(struct udphdr) + datalen);
	iph->nexthdr = IPPROTO_UDP;

A
Alexey Dobriyan 已提交
2865 2866
	iph->daddr = pkt_dev->cur_in6_daddr;
	iph->saddr = pkt_dev->cur_in6_saddr;
L
Linus Torvalds 已提交
2867

2868
	skb->mac_header = (skb->network_header - ETH_HLEN -
2869
			   pkt_dev->pkt_overhead);
2870
	skb->protocol = protocol;
L
Linus Torvalds 已提交
2871 2872 2873
	skb->dev = odev;
	skb->pkt_type = PACKET_HOST;

E
Eric Dumazet 已提交
2874
	pktgen_finalize_skb(pkt_dev, skb, datalen);
L
Luiz Capitulino 已提交
2875

L
Linus Torvalds 已提交
2876 2877 2878
	return skb;
}

S
Stephen Hemminger 已提交
2879 2880
static struct sk_buff *fill_packet(struct net_device *odev,
				   struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
2881
{
L
Luiz Capitulino 已提交
2882
	if (pkt_dev->flags & F_IPV6)
L
Linus Torvalds 已提交
2883 2884 2885 2886 2887
		return fill_packet_ipv6(odev, pkt_dev);
	else
		return fill_packet_ipv4(odev, pkt_dev);
}

L
Luiz Capitulino 已提交
2888
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
2889
{
L
Luiz Capitulino 已提交
2890 2891
	pkt_dev->seq_num = 1;
	pkt_dev->idle_acc = 0;
L
Linus Torvalds 已提交
2892
	pkt_dev->sofar = 0;
L
Luiz Capitulino 已提交
2893 2894
	pkt_dev->tx_bytes = 0;
	pkt_dev->errors = 0;
L
Linus Torvalds 已提交
2895 2896 2897 2898 2899 2900
}

/* Set up structure for sending pkts, clear counters */

static void pktgen_run(struct pktgen_thread *t)
{
2901
	struct pktgen_dev *pkt_dev;
L
Linus Torvalds 已提交
2902 2903
	int started = 0;

J
Joe Perches 已提交
2904
	func_enter();
L
Linus Torvalds 已提交
2905 2906

	if_lock(t);
2907
	list_for_each_entry(pkt_dev, &t->if_list, list) {
L
Linus Torvalds 已提交
2908 2909 2910 2911 2912 2913

		/*
		 * setup odev and create initial packet.
		 */
		pktgen_setup_inject(pkt_dev);

L
Luiz Capitulino 已提交
2914
		if (pkt_dev->odev) {
L
Linus Torvalds 已提交
2915
			pktgen_clear_counters(pkt_dev);
L
Luiz Capitulino 已提交
2916
			pkt_dev->running = 1;	/* Cranke yeself! */
L
Linus Torvalds 已提交
2917
			pkt_dev->skb = NULL;
D
Daniel Borkmann 已提交
2918
			pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
2919

2920
			set_pkt_overhead(pkt_dev);
L
Luiz Capitulino 已提交
2921

L
Linus Torvalds 已提交
2922 2923
			strcpy(pkt_dev->result, "Starting");
			started++;
L
Luiz Capitulino 已提交
2924
		} else
L
Linus Torvalds 已提交
2925 2926 2927
			strcpy(pkt_dev->result, "Error starting");
	}
	if_unlock(t);
L
Luiz Capitulino 已提交
2928 2929
	if (started)
		t->control &= ~(T_STOP);
L
Linus Torvalds 已提交
2930 2931
}

C
Cong Wang 已提交
2932
static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
L
Linus Torvalds 已提交
2933
{
2934
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
2935

J
Joe Perches 已提交
2936
	func_enter();
L
Linus Torvalds 已提交
2937

2938
	mutex_lock(&pktgen_thread_lock);
2939

C
Cong Wang 已提交
2940
	list_for_each_entry(t, &pn->pktgen_threads, th_list)
2941
		t->control |= T_STOP;
2942

2943
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
2944 2945
}

S
Stephen Hemminger 已提交
2946
static int thread_is_running(const struct pktgen_thread *t)
L
Linus Torvalds 已提交
2947
{
S
Stephen Hemminger 已提交
2948
	const struct pktgen_dev *pkt_dev;
L
Linus Torvalds 已提交
2949

2950
	list_for_each_entry(pkt_dev, &t->if_list, list)
S
Stephen Hemminger 已提交
2951 2952 2953
		if (pkt_dev->running)
			return 1;
	return 0;
L
Linus Torvalds 已提交
2954 2955
}

L
Luiz Capitulino 已提交
2956
static int pktgen_wait_thread_run(struct pktgen_thread *t)
L
Linus Torvalds 已提交
2957
{
L
Luiz Capitulino 已提交
2958
	if_lock(t);
L
Linus Torvalds 已提交
2959

L
Luiz Capitulino 已提交
2960
	while (thread_is_running(t)) {
L
Linus Torvalds 已提交
2961

L
Luiz Capitulino 已提交
2962
		if_unlock(t);
L
Linus Torvalds 已提交
2963

L
Luiz Capitulino 已提交
2964
		msleep_interruptible(100);
L
Linus Torvalds 已提交
2965

L
Luiz Capitulino 已提交
2966 2967 2968 2969 2970 2971 2972 2973
		if (signal_pending(current))
			goto signal;
		if_lock(t);
	}
	if_unlock(t);
	return 1;
signal:
	return 0;
L
Linus Torvalds 已提交
2974 2975
}

C
Cong Wang 已提交
2976
static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
L
Linus Torvalds 已提交
2977
{
2978
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
2979
	int sig = 1;
L
Luiz Capitulino 已提交
2980

2981
	mutex_lock(&pktgen_thread_lock);
2982

C
Cong Wang 已提交
2983
	list_for_each_entry(t, &pn->pktgen_threads, th_list) {
L
Linus Torvalds 已提交
2984
		sig = pktgen_wait_thread_run(t);
L
Luiz Capitulino 已提交
2985 2986
		if (sig == 0)
			break;
L
Linus Torvalds 已提交
2987
	}
2988 2989

	if (sig == 0)
C
Cong Wang 已提交
2990
		list_for_each_entry(t, &pn->pktgen_threads, th_list)
L
Linus Torvalds 已提交
2991
			t->control |= (T_STOP);
2992

2993
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
2994 2995 2996
	return sig;
}

C
Cong Wang 已提交
2997
static void pktgen_run_all_threads(struct pktgen_net *pn)
L
Linus Torvalds 已提交
2998
{
2999
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
3000

J
Joe Perches 已提交
3001
	func_enter();
L
Linus Torvalds 已提交
3002

3003
	mutex_lock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3004

C
Cong Wang 已提交
3005
	list_for_each_entry(t, &pn->pktgen_threads, th_list)
L
Linus Torvalds 已提交
3006
		t->control |= (T_RUN);
3007

3008
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3009

3010 3011
	/* Propagate thread->control  */
	schedule_timeout_interruptible(msecs_to_jiffies(125));
L
Luiz Capitulino 已提交
3012

C
Cong Wang 已提交
3013
	pktgen_wait_all_threads_run(pn);
L
Linus Torvalds 已提交
3014 3015
}

C
Cong Wang 已提交
3016
static void pktgen_reset_all_threads(struct pktgen_net *pn)
3017 3018 3019
{
	struct pktgen_thread *t;

J
Joe Perches 已提交
3020
	func_enter();
3021 3022 3023

	mutex_lock(&pktgen_thread_lock);

C
Cong Wang 已提交
3024
	list_for_each_entry(t, &pn->pktgen_threads, th_list)
3025 3026 3027 3028
		t->control |= (T_REMDEVALL);

	mutex_unlock(&pktgen_thread_lock);

3029 3030
	/* Propagate thread->control  */
	schedule_timeout_interruptible(msecs_to_jiffies(125));
3031

C
Cong Wang 已提交
3032
	pktgen_wait_all_threads_run(pn);
3033 3034
}

L
Linus Torvalds 已提交
3035 3036
static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
{
3037
	__u64 bps, mbps, pps;
L
Luiz Capitulino 已提交
3038
	char *p = pkt_dev->result;
3039 3040 3041 3042
	ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
				    pkt_dev->started_at);
	ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);

3043
	p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3044 3045 3046
		     (unsigned long long)ktime_to_us(elapsed),
		     (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
		     (unsigned long long)ktime_to_us(idle),
L
Luiz Capitulino 已提交
3047 3048 3049
		     (unsigned long long)pkt_dev->sofar,
		     pkt_dev->cur_pkt_size, nr_frags);

3050 3051
	pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
			ktime_to_ns(elapsed));
L
Luiz Capitulino 已提交
3052 3053 3054 3055 3056 3057 3058 3059 3060 3061

	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);
L
Linus Torvalds 已提交
3062 3063 3064
}

/* Set stopped-at timer, remove from running list, do counters & statistics */
L
Luiz Capitulino 已提交
3065
static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3066
{
L
Luiz Capitulino 已提交
3067
	int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
3068

L
Luiz Capitulino 已提交
3069
	if (!pkt_dev->running) {
J
Joe Perches 已提交
3070 3071
		pr_warning("interface: %s is already stopped\n",
			   pkt_dev->odevname);
L
Luiz Capitulino 已提交
3072 3073
		return -EINVAL;
	}
L
Linus Torvalds 已提交
3074

S
Stephen Hemminger 已提交
3075 3076
	kfree_skb(pkt_dev->skb);
	pkt_dev->skb = NULL;
D
Daniel Borkmann 已提交
3077
	pkt_dev->stopped_at = ktime_get();
L
Luiz Capitulino 已提交
3078
	pkt_dev->running = 0;
L
Linus Torvalds 已提交
3079

3080
	show_results(pkt_dev, nr_frags);
L
Linus Torvalds 已提交
3081

L
Luiz Capitulino 已提交
3082
	return 0;
L
Linus Torvalds 已提交
3083 3084
}

L
Luiz Capitulino 已提交
3085
static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3086
{
3087
	struct pktgen_dev *pkt_dev, *best = NULL;
L
Luiz Capitulino 已提交
3088

L
Linus Torvalds 已提交
3089 3090
	if_lock(t);

3091 3092
	list_for_each_entry(pkt_dev, &t->if_list, list) {
		if (!pkt_dev->running)
L
Luiz Capitulino 已提交
3093 3094
			continue;
		if (best == NULL)
3095
			best = pkt_dev;
D
Daniel Borkmann 已提交
3096
		else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
3097
			best = pkt_dev;
L
Linus Torvalds 已提交
3098 3099
	}
	if_unlock(t);
L
Luiz Capitulino 已提交
3100
	return best;
L
Linus Torvalds 已提交
3101 3102
}

L
Luiz Capitulino 已提交
3103 3104
static void pktgen_stop(struct pktgen_thread *t)
{
3105
	struct pktgen_dev *pkt_dev;
L
Linus Torvalds 已提交
3106

J
Joe Perches 已提交
3107
	func_enter();
L
Linus Torvalds 已提交
3108

L
Luiz Capitulino 已提交
3109
	if_lock(t);
L
Linus Torvalds 已提交
3110

3111 3112
	list_for_each_entry(pkt_dev, &t->if_list, list) {
		pktgen_stop_device(pkt_dev);
3113
	}
L
Linus Torvalds 已提交
3114

L
Luiz Capitulino 已提交
3115
	if_unlock(t);
L
Linus Torvalds 已提交
3116 3117
}

3118 3119 3120 3121 3122 3123
/*
 * one of our devices needs to be removed - find it
 * and remove it
 */
static void pktgen_rem_one_if(struct pktgen_thread *t)
{
3124 3125
	struct list_head *q, *n;
	struct pktgen_dev *cur;
3126

J
Joe Perches 已提交
3127
	func_enter();
3128 3129 3130

	if_lock(t);

3131 3132
	list_for_each_safe(q, n, &t->if_list) {
		cur = list_entry(q, struct pktgen_dev, list);
3133

L
Luiz Capitulino 已提交
3134 3135
		if (!cur->removal_mark)
			continue;
3136

3137
		kfree_skb(cur->skb);
3138 3139 3140 3141 3142 3143 3144 3145 3146 3147
		cur->skb = NULL;

		pktgen_remove_device(t, cur);

		break;
	}

	if_unlock(t);
}

L
Luiz Capitulino 已提交
3148
static void pktgen_rem_all_ifs(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3149
{
3150 3151
	struct list_head *q, *n;
	struct pktgen_dev *cur;
L
Luiz Capitulino 已提交
3152

J
Joe Perches 已提交
3153 3154
	func_enter();

L
Luiz Capitulino 已提交
3155
	/* Remove all devices, free mem */
3156

L
Luiz Capitulino 已提交
3157
	if_lock(t);
L
Linus Torvalds 已提交
3158

3159 3160
	list_for_each_safe(q, n, &t->if_list) {
		cur = list_entry(q, struct pktgen_dev, list);
3161

3162
		kfree_skb(cur->skb);
3163 3164
		cur->skb = NULL;

L
Linus Torvalds 已提交
3165 3166 3167
		pktgen_remove_device(t, cur);
	}

L
Luiz Capitulino 已提交
3168
	if_unlock(t);
L
Linus Torvalds 已提交
3169 3170
}

L
Luiz Capitulino 已提交
3171
static void pktgen_rem_thread(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3172
{
L
Luiz Capitulino 已提交
3173
	/* Remove from the thread list */
C
Cong Wang 已提交
3174
	remove_proc_entry(t->tsk->comm, t->net->proc_dir);
L
Linus Torvalds 已提交
3175 3176
}

3177
static void pktgen_resched(struct pktgen_dev *pkt_dev)
3178
{
D
Daniel Borkmann 已提交
3179
	ktime_t idle_start = ktime_get();
3180
	schedule();
D
Daniel Borkmann 已提交
3181
	pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3182
}
3183

3184 3185
static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
{
D
Daniel Borkmann 已提交
3186
	ktime_t idle_start = ktime_get();
3187

3188 3189 3190 3191 3192 3193 3194 3195 3196
	while (atomic_read(&(pkt_dev->skb->users)) != 1) {
		if (signal_pending(current))
			break;

		if (need_resched())
			pktgen_resched(pkt_dev);
		else
			cpu_relax();
	}
D
Daniel Borkmann 已提交
3197
	pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3198 3199
}

S
Stephen Hemminger 已提交
3200
static void pktgen_xmit(struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3201
{
3202
	struct net_device *odev = pkt_dev->odev;
3203
	netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
3204
		= odev->netdev_ops->ndo_start_xmit;
3205 3206
	struct netdev_queue *txq;
	u16 queue_map;
L
Linus Torvalds 已提交
3207 3208
	int ret;

3209 3210 3211 3212
	/* If device is offline, then don't send */
	if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
		pktgen_stop_device(pkt_dev);
		return;
3213 3214
	}

3215 3216 3217 3218
	/* This is max DELAY, this has special meaning of
	 * "never transmit"
	 */
	if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
D
Daniel Borkmann 已提交
3219
		pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3220
		return;
L
Linus Torvalds 已提交
3221
	}
L
Luiz Capitulino 已提交
3222

3223
	/* If no skb or clone count exhausted then get new one */
3224 3225 3226 3227 3228 3229 3230
	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) {
J
Joe Perches 已提交
3231
			pr_err("ERROR: couldn't allocate skb in fill_packet\n");
3232 3233 3234
			schedule();
			pkt_dev->clone_count--;	/* back out increment, OOM */
			return;
L
Linus Torvalds 已提交
3235
		}
3236
		pkt_dev->last_pkt_size = pkt_dev->skb->len;
3237 3238
		pkt_dev->allocated_skbs++;
		pkt_dev->clone_count = 0;	/* reset counter */
L
Linus Torvalds 已提交
3239
	}
3240

3241 3242 3243
	if (pkt_dev->delay && pkt_dev->last_ok)
		spin(pkt_dev, pkt_dev->next_tx);

3244 3245 3246 3247
	queue_map = skb_get_queue_mapping(pkt_dev->skb);
	txq = netdev_get_tx_queue(odev, queue_map);

	__netif_tx_lock_bh(txq);
3248

3249
	if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
3250
		ret = NETDEV_TX_BUSY;
3251 3252 3253 3254 3255
		pkt_dev->last_ok = 0;
		goto unlock;
	}
	atomic_inc(&(pkt_dev->skb->users));
	ret = (*xmit)(pkt_dev->skb, odev);
3256 3257 3258 3259 3260 3261 3262

	switch (ret) {
	case NETDEV_TX_OK:
		txq_trans_update(txq);
		pkt_dev->last_ok = 1;
		pkt_dev->sofar++;
		pkt_dev->seq_num++;
3263
		pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
3264
		break;
3265 3266 3267 3268 3269 3270
	case NET_XMIT_DROP:
	case NET_XMIT_CN:
	case NET_XMIT_POLICED:
		/* skb has been consumed */
		pkt_dev->errors++;
		break;
3271
	default: /* Drivers are not supposed to return other values! */
3272 3273
		net_info_ratelimited("%s xmit error: %d\n",
				     pkt_dev->odevname, ret);
3274 3275 3276 3277 3278 3279 3280
		pkt_dev->errors++;
		/* fallthru */
	case NETDEV_TX_LOCKED:
	case NETDEV_TX_BUSY:
		/* Retry it next time */
		atomic_dec(&(pkt_dev->skb->users));
		pkt_dev->last_ok = 0;
L
Luiz Capitulino 已提交
3281
	}
3282
unlock:
3283
	__netif_tx_unlock_bh(txq);
L
Luiz Capitulino 已提交
3284

L
Linus Torvalds 已提交
3285 3286
	/* If pkt_dev->count is zero, then run forever */
	if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
3287
		pktgen_wait_for_skb(pkt_dev);
L
Luiz Capitulino 已提交
3288

L
Linus Torvalds 已提交
3289 3290
		/* Done with this */
		pktgen_stop_device(pkt_dev);
L
Luiz Capitulino 已提交
3291 3292
	}
}
L
Linus Torvalds 已提交
3293

3294
/*
L
Linus Torvalds 已提交
3295 3296 3297
 * Main loop of the thread goes here
 */

3298
static int pktgen_thread_worker(void *arg)
L
Linus Torvalds 已提交
3299 3300
{
	DEFINE_WAIT(wait);
3301
	struct pktgen_thread *t = arg;
L
Luiz Capitulino 已提交
3302
	struct pktgen_dev *pkt_dev = NULL;
L
Linus Torvalds 已提交
3303 3304
	int cpu = t->cpu;

3305
	BUG_ON(smp_processor_id() != cpu);
L
Linus Torvalds 已提交
3306 3307

	init_waitqueue_head(&t->queue);
3308
	complete(&t->start_done);
L
Linus Torvalds 已提交
3309

J
Joe Perches 已提交
3310
	pr_debug("starting pktgen/%d:  pid=%d\n", cpu, task_pid_nr(current));
L
Linus Torvalds 已提交
3311

3312
	set_current_state(TASK_INTERRUPTIBLE);
L
Luiz Capitulino 已提交
3313

3314 3315
	set_freezable();

3316 3317
	while (!kthread_should_stop()) {
		pkt_dev = next_to_run(t);
L
Linus Torvalds 已提交
3318

3319
		if (unlikely(!pkt_dev && t->control == 0)) {
C
Cong Wang 已提交
3320
			if (t->net->pktgen_exiting)
E
Eric Dumazet 已提交
3321
				break;
3322 3323 3324
			wait_event_interruptible_timeout(t->queue,
							 t->control != 0,
							 HZ/10);
R
Rafael J. Wysocki 已提交
3325
			try_to_freeze();
3326
			continue;
3327
		}
L
Linus Torvalds 已提交
3328

3329
		__set_current_state(TASK_RUNNING);
L
Luiz Capitulino 已提交
3330

3331
		if (likely(pkt_dev)) {
L
Linus Torvalds 已提交
3332 3333
			pktgen_xmit(pkt_dev);

3334 3335 3336 3337 3338 3339
			if (need_resched())
				pktgen_resched(pkt_dev);
			else
				cpu_relax();
		}

L
Luiz Capitulino 已提交
3340
		if (t->control & T_STOP) {
L
Linus Torvalds 已提交
3341 3342 3343 3344
			pktgen_stop(t);
			t->control &= ~(T_STOP);
		}

L
Luiz Capitulino 已提交
3345
		if (t->control & T_RUN) {
L
Linus Torvalds 已提交
3346 3347 3348 3349
			pktgen_run(t);
			t->control &= ~(T_RUN);
		}

L
Luiz Capitulino 已提交
3350
		if (t->control & T_REMDEVALL) {
L
Linus Torvalds 已提交
3351
			pktgen_rem_all_ifs(t);
3352 3353 3354
			t->control &= ~(T_REMDEVALL);
		}

L
Luiz Capitulino 已提交
3355
		if (t->control & T_REMDEV) {
3356
			pktgen_rem_one_if(t);
L
Linus Torvalds 已提交
3357 3358 3359
			t->control &= ~(T_REMDEV);
		}

A
Andrew Morton 已提交
3360 3361
		try_to_freeze();

3362
		set_current_state(TASK_INTERRUPTIBLE);
L
Luiz Capitulino 已提交
3363
	}
L
Linus Torvalds 已提交
3364

J
Joe Perches 已提交
3365
	pr_debug("%s stopping all device\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3366
	pktgen_stop(t);
L
Linus Torvalds 已提交
3367

J
Joe Perches 已提交
3368
	pr_debug("%s removing all device\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3369
	pktgen_rem_all_ifs(t);
L
Linus Torvalds 已提交
3370

J
Joe Perches 已提交
3371
	pr_debug("%s removing thread\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3372
	pktgen_rem_thread(t);
3373

E
Eric Dumazet 已提交
3374 3375 3376 3377 3378 3379 3380
	/* Wait for kthread_stop */
	while (!kthread_should_stop()) {
		set_current_state(TASK_INTERRUPTIBLE);
		schedule();
	}
	__set_current_state(TASK_RUNNING);

3381
	return 0;
L
Linus Torvalds 已提交
3382 3383
}

L
Luiz Capitulino 已提交
3384
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
E
Eric Dumazet 已提交
3385
					  const char *ifname, bool exact)
L
Linus Torvalds 已提交
3386
{
3387
	struct pktgen_dev *p, *pkt_dev = NULL;
E
Eric Dumazet 已提交
3388
	size_t len = strlen(ifname);
L
Luiz Capitulino 已提交
3389

E
Eric Dumazet 已提交
3390
	if_lock(t);
3391
	list_for_each_entry(p, &t->if_list, list)
E
Eric Dumazet 已提交
3392 3393 3394 3395 3396
		if (strncmp(p->odevname, ifname, len) == 0) {
			if (p->odevname[len]) {
				if (exact || p->odevname[len] != '@')
					continue;
			}
3397
			pkt_dev = p;
L
Luiz Capitulino 已提交
3398 3399 3400 3401
			break;
		}

	if_unlock(t);
J
Joe Perches 已提交
3402
	pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
L
Luiz Capitulino 已提交
3403
	return pkt_dev;
L
Linus Torvalds 已提交
3404 3405
}

3406 3407
/*
 * Adds a dev at front of if_list.
L
Linus Torvalds 已提交
3408 3409
 */

L
Luiz Capitulino 已提交
3410 3411
static int add_dev_to_thread(struct pktgen_thread *t,
			     struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3412 3413
{
	int rv = 0;
L
Luiz Capitulino 已提交
3414 3415 3416 3417

	if_lock(t);

	if (pkt_dev->pg_thread) {
J
Joe Perches 已提交
3418
		pr_err("ERROR: already assigned to a thread\n");
L
Luiz Capitulino 已提交
3419 3420 3421
		rv = -EBUSY;
		goto out;
	}
3422 3423

	list_add(&pkt_dev->list, &t->if_list);
L
Luiz Capitulino 已提交
3424
	pkt_dev->pg_thread = t;
L
Linus Torvalds 已提交
3425 3426
	pkt_dev->running = 0;

L
Luiz Capitulino 已提交
3427 3428 3429
out:
	if_unlock(t);
	return rv;
L
Linus Torvalds 已提交
3430 3431 3432 3433
}

/* Called under thread lock */

L
Luiz Capitulino 已提交
3434
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
L
Linus Torvalds 已提交
3435
{
L
Luiz Capitulino 已提交
3436
	struct pktgen_dev *pkt_dev;
3437
	int err;
E
Eric Dumazet 已提交
3438
	int node = cpu_to_node(t->cpu);
L
Luiz Capitulino 已提交
3439

L
Linus Torvalds 已提交
3440 3441
	/* We don't allow a device to be on several threads */

C
Cong Wang 已提交
3442
	pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
3443
	if (pkt_dev) {
J
Joe Perches 已提交
3444
		pr_err("ERROR: interface already used\n");
L
Luiz Capitulino 已提交
3445 3446
		return -EBUSY;
	}
3447

E
Eric Dumazet 已提交
3448
	pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
3449 3450 3451
	if (!pkt_dev)
		return -ENOMEM;

E
Eric Dumazet 已提交
3452
	strcpy(pkt_dev->odevname, ifname);
3453
	pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
E
Eric Dumazet 已提交
3454
				      node);
3455 3456 3457 3458 3459
	if (pkt_dev->flows == NULL) {
		kfree(pkt_dev);
		return -ENOMEM;
	}

3460
	pkt_dev->removal_mark = 0;
3461
	pkt_dev->nfrags = 0;
3462
	pkt_dev->delay = pg_delay_d;
3463 3464
	pkt_dev->count = pg_count_d;
	pkt_dev->sofar = 0;
L
Luiz Capitulino 已提交
3465
	pkt_dev->udp_src_min = 9;	/* sink port */
3466 3467 3468
	pkt_dev->udp_src_max = 9;
	pkt_dev->udp_dst_min = 9;
	pkt_dev->udp_dst_max = 9;
F
Francesco Fondelli 已提交
3469 3470 3471 3472 3473 3474
	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;
R
Robert Olsson 已提交
3475
	pkt_dev->node = -1;
F
Francesco Fondelli 已提交
3476

C
Cong Wang 已提交
3477
	err = pktgen_setup_dev(t->net, pkt_dev, ifname);
3478 3479
	if (err)
		goto out1;
3480 3481
	if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
		pkt_dev->clone_skb = pg_clone_skb_d;
3482

C
Cong Wang 已提交
3483
	pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
3484
					  &pktgen_if_fops, pkt_dev);
3485
	if (!pkt_dev->entry) {
J
Joe Perches 已提交
3486
		pr_err("cannot create %s/%s procfs entry\n",
3487
		       PG_PROC_DIR, ifname);
3488 3489
		err = -EINVAL;
		goto out2;
3490
	}
J
Jamal Hadi Salim 已提交
3491 3492 3493 3494
#ifdef CONFIG_XFRM
	pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
	pkt_dev->ipsproto = IPPROTO_ESP;
#endif
3495 3496

	return add_dev_to_thread(t, pkt_dev);
3497 3498 3499
out2:
	dev_put(pkt_dev->odev);
out1:
J
Jamal Hadi Salim 已提交
3500 3501 3502
#ifdef CONFIG_XFRM
	free_SAs(pkt_dev);
#endif
F
Figo.zhang 已提交
3503
	vfree(pkt_dev->flows);
3504 3505
	kfree(pkt_dev);
	return err;
L
Linus Torvalds 已提交
3506 3507
}

C
Cong Wang 已提交
3508
static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
L
Linus Torvalds 已提交
3509
{
3510
	struct pktgen_thread *t;
3511
	struct proc_dir_entry *pe;
3512
	struct task_struct *p;
L
Luiz Capitulino 已提交
3513

E
Eric Dumazet 已提交
3514 3515
	t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
			 cpu_to_node(cpu));
L
Luiz Capitulino 已提交
3516
	if (!t) {
J
Joe Perches 已提交
3517
		pr_err("ERROR: out of memory, can't create new thread\n");
L
Luiz Capitulino 已提交
3518 3519 3520 3521
		return -ENOMEM;
	}

	spin_lock_init(&t->if_lock);
L
Linus Torvalds 已提交
3522
	t->cpu = cpu;
L
Luiz Capitulino 已提交
3523

3524 3525
	INIT_LIST_HEAD(&t->if_list);

C
Cong Wang 已提交
3526
	list_add_tail(&t->th_list, &pn->pktgen_threads);
3527
	init_completion(&t->start_done);
3528

3529 3530 3531 3532
	p = kthread_create_on_node(pktgen_thread_worker,
				   t,
				   cpu_to_node(cpu),
				   "kpktgend_%d", cpu);
3533
	if (IS_ERR(p)) {
J
Joe Perches 已提交
3534
		pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
3535 3536 3537 3538 3539 3540 3541
		list_del(&t->th_list);
		kfree(t);
		return PTR_ERR(p);
	}
	kthread_bind(p, cpu);
	t->tsk = p;

C
Cong Wang 已提交
3542
	pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
3543
			      &pktgen_thread_fops, t);
L
Luiz Capitulino 已提交
3544
	if (!pe) {
J
Joe Perches 已提交
3545
		pr_err("cannot create %s/%s procfs entry\n",
3546 3547 3548
		       PG_PROC_DIR, t->tsk->comm);
		kthread_stop(p);
		list_del(&t->th_list);
L
Luiz Capitulino 已提交
3549 3550 3551
		kfree(t);
		return -EINVAL;
	}
3552

C
Cong Wang 已提交
3553
	t->net = pn;
3554
	wake_up_process(p);
3555
	wait_for_completion(&t->start_done);
L
Linus Torvalds 已提交
3556 3557 3558 3559

	return 0;
}

3560 3561
/*
 * Removes a device from the thread if_list.
L
Linus Torvalds 已提交
3562
 */
L
Luiz Capitulino 已提交
3563 3564
static void _rem_dev_from_if_list(struct pktgen_thread *t,
				  struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3565
{
3566 3567
	struct list_head *q, *n;
	struct pktgen_dev *p;
L
Linus Torvalds 已提交
3568

3569 3570 3571 3572
	list_for_each_safe(q, n, &t->if_list) {
		p = list_entry(q, struct pktgen_dev, list);
		if (p == pkt_dev)
			list_del(&p->list);
L
Linus Torvalds 已提交
3573 3574 3575
	}
}

L
Luiz Capitulino 已提交
3576 3577
static int pktgen_remove_device(struct pktgen_thread *t,
				struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3578
{
C
Cong Wang 已提交
3579
	struct pktgen_net *pn = t->net;
L
Linus Torvalds 已提交
3580

J
Joe Perches 已提交
3581
	pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
L
Linus Torvalds 已提交
3582

L
Luiz Capitulino 已提交
3583
	if (pkt_dev->running) {
J
Joe Perches 已提交
3584
		pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
L
Luiz Capitulino 已提交
3585 3586 3587 3588
		pktgen_stop_device(pkt_dev);
	}

	/* Dis-associate from the interface */
L
Linus Torvalds 已提交
3589 3590 3591

	if (pkt_dev->odev) {
		dev_put(pkt_dev->odev);
L
Luiz Capitulino 已提交
3592 3593 3594
		pkt_dev->odev = NULL;
	}

L
Linus Torvalds 已提交
3595 3596 3597 3598
	/* And update the thread if_list */

	_rem_dev_from_if_list(t, pkt_dev);

3599
	if (pkt_dev->entry)
C
Cong Wang 已提交
3600
		remove_proc_entry(pkt_dev->entry->name, pn->proc_dir);
L
Linus Torvalds 已提交
3601

J
Jamal Hadi Salim 已提交
3602 3603 3604
#ifdef CONFIG_XFRM
	free_SAs(pkt_dev);
#endif
F
Figo.zhang 已提交
3605
	vfree(pkt_dev->flows);
E
Eric Dumazet 已提交
3606 3607
	if (pkt_dev->page)
		put_page(pkt_dev->page);
L
Linus Torvalds 已提交
3608
	kfree(pkt_dev);
L
Luiz Capitulino 已提交
3609
	return 0;
L
Linus Torvalds 已提交
3610 3611
}

C
Cong Wang 已提交
3612
static int __net_init pg_net_init(struct net *net)
L
Linus Torvalds 已提交
3613
{
C
Cong Wang 已提交
3614
	struct pktgen_net *pn = net_generic(net, pg_net_id);
3615
	struct proc_dir_entry *pe;
C
Cong Wang 已提交
3616 3617 3618 3619 3620 3621 3622 3623
	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);
3624
		return -ENODEV;
C
Cong Wang 已提交
3625 3626
	}
	pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
L
Luiz Capitulino 已提交
3627
	if (pe == NULL) {
C
Cong Wang 已提交
3628
		pr_err("cannot create %s procfs entry\n", PGCTRL);
W
WANG Cong 已提交
3629
		ret = -EINVAL;
C
Cong Wang 已提交
3630
		goto remove;
L
Luiz Capitulino 已提交
3631
	}
L
Linus Torvalds 已提交
3632

J
John Hawkes 已提交
3633
	for_each_online_cpu(cpu) {
3634
		int err;
L
Linus Torvalds 已提交
3635

C
Cong Wang 已提交
3636
		err = pktgen_create_thread(cpu, pn);
3637
		if (err)
C
Cong Wang 已提交
3638
			pr_warn("Cannot create thread for cpu %d (%d)\n",
J
Joe Perches 已提交
3639
				   cpu, err);
L
Luiz Capitulino 已提交
3640
	}
3641

C
Cong Wang 已提交
3642 3643
	if (list_empty(&pn->pktgen_threads)) {
		pr_err("Initialization failed for all threads\n");
W
WANG Cong 已提交
3644
		ret = -ENODEV;
C
Cong Wang 已提交
3645
		goto remove_entry;
3646 3647
	}

L
Luiz Capitulino 已提交
3648
	return 0;
W
WANG Cong 已提交
3649

C
Cong Wang 已提交
3650 3651 3652
remove_entry:
	remove_proc_entry(PGCTRL, pn->proc_dir);
remove:
3653
	remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
W
WANG Cong 已提交
3654
	return ret;
L
Linus Torvalds 已提交
3655 3656
}

C
Cong Wang 已提交
3657
static void __net_exit pg_net_exit(struct net *net)
L
Linus Torvalds 已提交
3658
{
C
Cong Wang 已提交
3659
	struct pktgen_net *pn = net_generic(net, pg_net_id);
3660 3661
	struct pktgen_thread *t;
	struct list_head *q, *n;
3662
	LIST_HEAD(list);
L
Linus Torvalds 已提交
3663

L
Luiz Capitulino 已提交
3664
	/* Stop all interfaces & threads */
C
Cong Wang 已提交
3665
	pn->pktgen_exiting = true;
L
Linus Torvalds 已提交
3666

3667
	mutex_lock(&pktgen_thread_lock);
C
Cong Wang 已提交
3668
	list_splice_init(&pn->pktgen_threads, &list);
3669 3670 3671
	mutex_unlock(&pktgen_thread_lock);

	list_for_each_safe(q, n, &list) {
3672
		t = list_entry(q, struct pktgen_thread, th_list);
3673
		list_del(&t->th_list);
3674 3675
		kthread_stop(t->tsk);
		kfree(t);
L
Luiz Capitulino 已提交
3676
	}
L
Linus Torvalds 已提交
3677

C
Cong Wang 已提交
3678
	remove_proc_entry(PGCTRL, pn->proc_dir);
3679
	remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
C
Cong Wang 已提交
3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691
}

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;
L
Linus Torvalds 已提交
3692

C
Cong Wang 已提交
3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707
	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;
}

static void __exit pg_cleanup(void)
{
	unregister_netdevice_notifier(&pktgen_notifier_block);
	unregister_pernet_subsys(&pg_net_ops);
L
Linus Torvalds 已提交
3708 3709 3710 3711 3712
}

module_init(pg_init);
module_exit(pg_cleanup);

S
Stephen Hemminger 已提交
3713
MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
L
Linus Torvalds 已提交
3714 3715
MODULE_DESCRIPTION("Packet Generator tool");
MODULE_LICENSE("GPL");
S
Stephen Hemminger 已提交
3716
MODULE_VERSION(VERSION);
L
Linus Torvalds 已提交
3717
module_param(pg_count_d, int, 0);
S
Stephen Hemminger 已提交
3718
MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
L
Linus Torvalds 已提交
3719
module_param(pg_delay_d, int, 0);
S
Stephen Hemminger 已提交
3720
MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
L
Linus Torvalds 已提交
3721
module_param(pg_clone_skb_d, int, 0);
S
Stephen Hemminger 已提交
3722
MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
L
Linus Torvalds 已提交
3723
module_param(debug, int, 0);
S
Stephen Hemminger 已提交
3724
MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");