pktgen.c 93.2 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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 */
#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/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 <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 <asm/byteorder.h>
#include <linux/rcupdate.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
#include <asm/dma.h>
#include <asm/uaccess.h>
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#include <asm/div64.h>		/* do_div */
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#include <asm/timex.h>

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#define VERSION  "pktgen v2.70: Packet Generator for packet performance testing.\n"
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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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/* 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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/* Thread control flag bits */
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#define T_TERMINATE   (1<<0)
#define T_STOP        (1<<1)	/* Stop run */
#define T_RUN         (1<<2)	/* Start run */
#define T_REMDEVALL   (1<<3)	/* Remove all devs */
#define T_REMDEV      (1<<4)	/* 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"
static struct proc_dir_entry *pg_proc_dir = NULL;
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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;		/* Used for chaining in the thread's run-queue */
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	int running;		/* if this changes to 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;	/* = ETH_ZLEN; */
	int max_pkt_size;	/* = ETH_ZLEN; */
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	int pkt_overhead;	/* overhead for MPLS, VLANs, IPSEC etc */
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	int nfrags;
	__u32 delay_us;		/* Default delay */
	__u32 delay_ns;
	__u64 count;		/* Default No packets to send */
	__u64 sofar;		/* How many pkts we've sent so far */
	__u64 tx_bytes;		/* How many bytes we've transmitted */
	__u64 errors;		/* Errors when trying to transmit, pkts will be re-sent */

	/* runtime counters relating to clone_skb */
	__u64 next_tx_us;	/* timestamp of when to tx next */
	__u32 next_tx_ns;

	__u64 allocated_skbs;
	__u32 clone_count;
	int last_ok;		/* Was last skb sent?
				 * Or a failed transmit of some sort?  This will keep
				 * sequence numbers in order, for example.
				 */
	__u64 started_at;	/* micro-seconds */
	__u64 stopped_at;	/* micro-seconds */
	__u64 idle_acc;		/* micro-seconds */
	__u32 seq_num;

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

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

	struct in6_addr in6_saddr;
	struct in6_addr in6_daddr;
	struct in6_addr cur_in6_daddr;
	struct in6_addr cur_in6_saddr;
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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 */
	__u8 tos;            /* six most significant bits 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 */
	unsigned nr_labels;	/* Depth of stack, 0 = no MPLS */
	__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 cur_udp_dst;
	__u16 cur_udp_src;
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	__u16 cur_queue_map;
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	__u32 cur_pkt_size;

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

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

	struct sk_buff *skb;	/* skb we are to transmit next, mainly used for when we
				 * are transmitting the same one multiple times
				 */
	struct net_device *odev;	/* The out-going device.  Note that the device should
					 * have it's pg_info pointer pointing back to this
					 * device.  This will be 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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	struct flow_state *flows;
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	unsigned cflows;	/* Concurrent flows (config) */
	unsigned lflow;		/* Flow length  (config) */
	unsigned nflows;	/* accumulated flows (stats) */
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	unsigned curfl;		/* current sequenced flow (state)*/
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	u16 queue_map_min;
	u16 queue_map_max;

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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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};

struct pktgen_thread {
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	spinlock_t if_lock;
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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];

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

	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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};

#define REMOVE 1
#define FIND   0

/** Convert to micro-seconds */
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static inline __u64 tv_to_us(const struct timeval *tv)
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{
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	__u64 us = tv->tv_usec;
	us += (__u64) tv->tv_sec * (__u64) 1000000;
	return us;
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}

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static __u64 getCurUs(void)
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{
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	struct timeval tv;
	do_gettimeofday(&tv);
	return tv_to_us(&tv);
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}

/* old include end */

static char version[] __initdata = VERSION;

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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,
					  const char *ifname);
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static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
static void pktgen_run_all_threads(void);
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static void pktgen_reset_all_threads(void);
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static void pktgen_stop_all_threads_ifs(void);
static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
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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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static unsigned int scan_ip6(const char *s, char ip[16]);
static unsigned int fmt_ip6(char *s, const char ip[16]);
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/* Module parameters, defaults. */
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static int pg_count_d = 1000;	/* 1000 pkts by default */
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static int pg_delay_d;
static int pg_clone_skb_d;
static int debug;
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static DEFINE_MUTEX(pktgen_thread_lock);
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static LIST_HEAD(pktgen_threads);
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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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 *
 */

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

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static ssize_t pgctrl_write(struct file *file, const char __user * buf,
			    size_t count, loff_t * ppos)
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{
	int err = 0;
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	char data[128];
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	if (!capable(CAP_NET_ADMIN)) {
		err = -EPERM;
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		goto out;
L
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467
	}
L
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468

469 470
	if (count > sizeof(data))
		count = sizeof(data);
L
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471 472

	if (copy_from_user(data, buf, count)) {
473
		err = -EFAULT;
474
		goto out;
L
Luiz Capitulino 已提交
475 476
	}
	data[count - 1] = 0;	/* Make string */
L
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477

L
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478
	if (!strcmp(data, "stop"))
L
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479 480
		pktgen_stop_all_threads_ifs();

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481
	else if (!strcmp(data, "start"))
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		pktgen_run_all_threads();

484 485 486
	else if (!strcmp(data, "reset"))
		pktgen_reset_all_threads();

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487
	else
488
		printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
L
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489 490 491

	err = count;

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492 493
out:
	return err;
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}

496 497 498 499 500
static int pgctrl_open(struct inode *inode, struct file *file)
{
	return single_open(file, pgctrl_show, PDE(inode)->data);
}

501
static const struct file_operations pktgen_fops = {
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	.owner   = THIS_MODULE,
	.open    = pgctrl_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pgctrl_write,
	.release = single_release,
508 509 510
};

static int pktgen_if_show(struct seq_file *seq, void *v)
L
Linus Torvalds 已提交
511
{
L
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	struct pktgen_dev *pkt_dev = seq->private;
	__u64 sa;
	__u64 stopped;
	__u64 now = getCurUs();

	seq_printf(seq,
		   "Params: count %llu  min_pkt_size: %u  max_pkt_size: %u\n",
		   (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
		   pkt_dev->max_pkt_size);

	seq_printf(seq,
		   "     frags: %d  delay: %u  clone_skb: %d  ifname: %s\n",
		   pkt_dev->nfrags,
		   1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
526
		   pkt_dev->clone_skb, pkt_dev->odev->name);
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	seq_printf(seq, "     flows: %u flowlen: %u\n", pkt_dev->cflows,
		   pkt_dev->lflow);

R
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	seq_printf(seq,
		   "     queue_map_min: %u  queue_map_max: %u\n",
		   pkt_dev->queue_map_min,
		   pkt_dev->queue_map_max);

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	if (pkt_dev->flags & F_IPV6) {
		char b1[128], b2[128], b3[128];
		fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
		fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
		fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
		seq_printf(seq,
			   "     saddr: %s  min_saddr: %s  max_saddr: %s\n", b1,
			   b2, b3);

		fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
		fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
		fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
		seq_printf(seq,
			   "     daddr: %s  min_daddr: %s  max_daddr: %s\n", b1,
			   b2, b3);

	} else
		seq_printf(seq,
			   "     dst_min: %s  dst_max: %s\n     src_min: %s  src_max: %s\n",
			   pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
			   pkt_dev->src_max);
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558
	seq_puts(seq, "     src_mac: ");
L
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559

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	seq_printf(seq, "%pM ",
		   is_zero_ether_addr(pkt_dev->src_mac) ?
			     pkt_dev->odev->dev_addr : pkt_dev->src_mac);
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	seq_printf(seq, "dst_mac: ");
J
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565
	seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
L
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566 567 568 569 570 571 572

	seq_printf(seq,
		   "     udp_src_min: %d  udp_src_max: %d  udp_dst_min: %d  udp_dst_max: %d\n",
		   pkt_dev->udp_src_min, pkt_dev->udp_src_max,
		   pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);

	seq_printf(seq,
573
		   "     src_mac_count: %d  dst_mac_count: %d\n",
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		   pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
L
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576 577 578
	if (pkt_dev->nr_labels) {
		unsigned i;
		seq_printf(seq, "     mpls: ");
579
		for (i = 0; i < pkt_dev->nr_labels; i++)
580 581 582 583
			seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
				   i == pkt_dev->nr_labels-1 ? "\n" : ", ");
	}

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	if (pkt_dev->vlan_id != 0xffff) {
		seq_printf(seq, "     vlan_id: %u  vlan_p: %u  vlan_cfi: %u\n",
			   pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
	}

	if (pkt_dev->svlan_id != 0xffff) {
		seq_printf(seq, "     svlan_id: %u  vlan_p: %u  vlan_cfi: %u\n",
			   pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
	}

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	if (pkt_dev->tos) {
		seq_printf(seq, "     tos: 0x%02x\n", pkt_dev->tos);
	}

	if (pkt_dev->traffic_class) {
		seq_printf(seq, "     traffic_class: 0x%02x\n", pkt_dev->traffic_class);
	}

602 603
	seq_printf(seq, "     Flags: ");

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	if (pkt_dev->flags & F_IPV6)
		seq_printf(seq, "IPV6  ");
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606

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607 608
	if (pkt_dev->flags & F_IPSRC_RND)
		seq_printf(seq, "IPSRC_RND  ");
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609

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610 611
	if (pkt_dev->flags & F_IPDST_RND)
		seq_printf(seq, "IPDST_RND  ");
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612

L
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613 614
	if (pkt_dev->flags & F_TXSIZE_RND)
		seq_printf(seq, "TXSIZE_RND  ");
L
Linus Torvalds 已提交
615

L
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616 617
	if (pkt_dev->flags & F_UDPSRC_RND)
		seq_printf(seq, "UDPSRC_RND  ");
L
Linus Torvalds 已提交
618

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

622 623 624
	if (pkt_dev->flags & F_MPLS_RND)
		seq_printf(seq,  "MPLS_RND  ");

R
Robert Olsson 已提交
625 626 627
	if (pkt_dev->flags & F_QUEUE_MAP_RND)
		seq_printf(seq,  "QUEUE_MAP_RND  ");

R
Robert Olsson 已提交
628 629 630
	if (pkt_dev->flags & F_QUEUE_MAP_CPU)
		seq_printf(seq,  "QUEUE_MAP_CPU  ");

631 632 633 634 635 636 637
	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
638 639 640 641 642
#ifdef CONFIG_XFRM
	if (pkt_dev->flags & F_IPSEC_ON)
		seq_printf(seq,  "IPSEC  ");
#endif

L
Luiz Capitulino 已提交
643 644
	if (pkt_dev->flags & F_MACSRC_RND)
		seq_printf(seq, "MACSRC_RND  ");
L
Linus Torvalds 已提交
645

L
Luiz Capitulino 已提交
646 647
	if (pkt_dev->flags & F_MACDST_RND)
		seq_printf(seq, "MACDST_RND  ");
L
Linus Torvalds 已提交
648

F
Francesco Fondelli 已提交
649 650 651 652 653 654
	if (pkt_dev->flags & F_VID_RND)
		seq_printf(seq, "VID_RND  ");

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

L
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655 656 657 658 659 660
	seq_puts(seq, "\n");

	sa = pkt_dev->started_at;
	stopped = pkt_dev->stopped_at;
	if (pkt_dev->running)
		stopped = now;	/* not really stopped, more like last-running-at */
L
Linus Torvalds 已提交
661

L
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662 663 664 665 666 667
	seq_printf(seq,
		   "Current:\n     pkts-sofar: %llu  errors: %llu\n     started: %lluus  stopped: %lluus idle: %lluus\n",
		   (unsigned long long)pkt_dev->sofar,
		   (unsigned long long)pkt_dev->errors, (unsigned long long)sa,
		   (unsigned long long)stopped,
		   (unsigned long long)pkt_dev->idle_acc);
L
Linus Torvalds 已提交
668

L
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669 670
	seq_printf(seq,
		   "     seq_num: %d  cur_dst_mac_offset: %d  cur_src_mac_offset: %d\n",
671 672
		   pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
		   pkt_dev->cur_src_mac_offset);
L
Linus Torvalds 已提交
673

L
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674
	if (pkt_dev->flags & F_IPV6) {
L
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675
		char b1[128], b2[128];
L
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676 677 678 679 680
		fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
		fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
		seq_printf(seq, "     cur_saddr: %s  cur_daddr: %s\n", b2, b1);
	} else
		seq_printf(seq, "     cur_saddr: 0x%x  cur_daddr: 0x%x\n",
681
			   pkt_dev->cur_saddr, pkt_dev->cur_daddr);
L
Linus Torvalds 已提交
682

L
Luiz Capitulino 已提交
683
	seq_printf(seq, "     cur_udp_dst: %d  cur_udp_src: %d\n",
684
		   pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
L
Linus Torvalds 已提交
685

R
Robert Olsson 已提交
686 687
	seq_printf(seq, "     cur_queue_map: %u\n", pkt_dev->cur_queue_map);

L
Luiz Capitulino 已提交
688
	seq_printf(seq, "     flows: %u\n", pkt_dev->nflows);
L
Linus Torvalds 已提交
689 690

	if (pkt_dev->result[0])
L
Luiz Capitulino 已提交
691
		seq_printf(seq, "Result: %s\n", pkt_dev->result);
L
Linus Torvalds 已提交
692
	else
L
Luiz Capitulino 已提交
693
		seq_printf(seq, "Result: Idle\n");
L
Linus Torvalds 已提交
694

695
	return 0;
L
Linus Torvalds 已提交
696 697
}

698

F
Francesco Fondelli 已提交
699
static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
700 701 702 703
{
	int i = 0;
	*num = 0;

704
	for (; i < maxlen; i++) {
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720
		char c;
		*num <<= 4;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		if ((c >= '0') && (c <= '9'))
			*num |= c - '0';
		else if ((c >= 'a') && (c <= 'f'))
			*num |= c - 'a' + 10;
		else if ((c >= 'A') && (c <= 'F'))
			*num |= c - 'A' + 10;
		else
			break;
	}
	return i;
}

L
Luiz Capitulino 已提交
721 722
static int count_trail_chars(const char __user * user_buffer,
			     unsigned int maxlen)
L
Linus Torvalds 已提交
723 724 725 726
{
	int i;

	for (i = 0; i < maxlen; i++) {
L
Luiz Capitulino 已提交
727 728 729 730
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		switch (c) {
L
Linus Torvalds 已提交
731 732 733 734 735 736 737 738 739
		case '\"':
		case '\n':
		case '\r':
		case '\t':
		case ' ':
		case '=':
			break;
		default:
			goto done;
740
		}
L
Linus Torvalds 已提交
741 742 743 744 745
	}
done:
	return i;
}

L
Luiz Capitulino 已提交
746 747
static unsigned long num_arg(const char __user * user_buffer,
			     unsigned long maxlen, unsigned long *num)
L
Linus Torvalds 已提交
748 749 750
{
	int i = 0;
	*num = 0;
L
Luiz Capitulino 已提交
751 752 753 754 755 756

	for (; i < maxlen; i++) {
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		if ((c >= '0') && (c <= '9')) {
L
Linus Torvalds 已提交
757
			*num *= 10;
L
Luiz Capitulino 已提交
758
			*num += c - '0';
L
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759 760 761 762 763 764
		} else
			break;
	}
	return i;
}

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

L
Luiz Capitulino 已提交
769 770 771 772 773
	for (; i < maxlen; i++) {
		char c;
		if (get_user(c, &user_buffer[i]))
			return -EFAULT;
		switch (c) {
L
Linus Torvalds 已提交
774 775 776 777 778 779 780 781 782
		case '\"':
		case '\n':
		case '\r':
		case '\t':
		case ' ':
			goto done_str;
			break;
		default:
			break;
783
		}
L
Linus Torvalds 已提交
784 785 786 787 788
	}
done_str:
	return i;
}

789 790 791 792 793 794 795 796 797 798
static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
{
	unsigned n = 0;
	char c;
	ssize_t i = 0;
	int len;

	pkt_dev->nr_labels = 0;
	do {
		__u32 tmp;
F
Francesco Fondelli 已提交
799
		len = hex32_arg(&buffer[i], 8, &tmp);
800 801 802 803 804 805 806 807 808 809 810 811
		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;
812
	} while (c == ',');
813 814 815 816 817

	pkt_dev->nr_labels = n;
	return i;
}

L
Luiz Capitulino 已提交
818 819 820
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
821
{
L
Luiz Capitulino 已提交
822 823
	struct seq_file *seq = (struct seq_file *)file->private_data;
	struct pktgen_dev *pkt_dev = seq->private;
L
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824 825 826
	int i = 0, max, len;
	char name[16], valstr[32];
	unsigned long value = 0;
L
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827 828
	char *pg_result = NULL;
	int tmp = 0;
L
Linus Torvalds 已提交
829
	char buf[128];
L
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830 831 832

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

L
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833
	if (count < 1) {
834
		printk(KERN_WARNING "pktgen: wrong command format\n");
L
Linus Torvalds 已提交
835 836
		return -EINVAL;
	}
L
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837

L
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838 839
	max = count - i;
	tmp = count_trail_chars(&user_buffer[i], max);
L
Luiz Capitulino 已提交
840
	if (tmp < 0) {
841
		printk(KERN_WARNING "pktgen: illegal format\n");
L
Luiz Capitulino 已提交
842
		return tmp;
L
Linus Torvalds 已提交
843
	}
L
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844 845
	i += tmp;

L
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846 847 848
	/* Read variable name */

	len = strn_len(&user_buffer[i], sizeof(name) - 1);
L
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849 850 851
	if (len < 0) {
		return len;
	}
L
Linus Torvalds 已提交
852
	memset(name, 0, sizeof(name));
L
Luiz Capitulino 已提交
853
	if (copy_from_user(name, &user_buffer[i], len))
L
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854 855
		return -EFAULT;
	i += len;
L
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856 857

	max = count - i;
L
Linus Torvalds 已提交
858
	len = count_trail_chars(&user_buffer[i], max);
L
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859 860 861
	if (len < 0)
		return len;

L
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862 863 864
	i += len;

	if (debug) {
L
Luiz Capitulino 已提交
865 866
		char tb[count + 1];
		if (copy_from_user(tb, user_buffer, count))
L
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867
			return -EFAULT;
L
Luiz Capitulino 已提交
868
		tb[count] = 0;
869
		printk(KERN_DEBUG "pktgen: %s,%lu  buffer -:%s:-\n", name,
L
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870 871
		       (unsigned long)count, tb);
	}
L
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	if (!strcmp(name, "min_pkt_size")) {
		len = num_arg(&user_buffer[i], 10, &value);
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875 876 877
		if (len < 0) {
			return len;
		}
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878
		i += len;
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		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);
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		return count;
	}

L
Luiz Capitulino 已提交
890
	if (!strcmp(name, "max_pkt_size")) {
L
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891
		len = num_arg(&user_buffer[i], 10, &value);
L
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		if (len < 0) {
			return len;
		}
L
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895
		i += len;
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		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);
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904 905 906
		return count;
	}

L
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907
	/* Shortcut for min = max */
L
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	if (!strcmp(name, "pkt_size")) {
		len = num_arg(&user_buffer[i], 10, &value);
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		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
914
		i += len;
L
Luiz Capitulino 已提交
915 916 917 918 919 920 921
		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
922 923 924 925
		sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
		return count;
	}

L
Luiz Capitulino 已提交
926
	if (!strcmp(name, "debug")) {
L
Linus Torvalds 已提交
927
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
928 929 930
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
931
		i += len;
L
Luiz Capitulino 已提交
932
		debug = value;
L
Linus Torvalds 已提交
933 934 935 936
		sprintf(pg_result, "OK: debug=%u", debug);
		return count;
	}

L
Luiz Capitulino 已提交
937
	if (!strcmp(name, "frags")) {
L
Linus Torvalds 已提交
938
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
939 940 941
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
942 943 944 945 946 947 948
		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);
L
Luiz Capitulino 已提交
949 950 951
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
952 953 954 955 956 957 958 959
		i += len;
		if (value == 0x7FFFFFFF) {
			pkt_dev->delay_us = 0x7FFFFFFF;
			pkt_dev->delay_ns = 0;
		} else {
			pkt_dev->delay_us = value / 1000;
			pkt_dev->delay_ns = value % 1000;
		}
L
Luiz Capitulino 已提交
960 961
		sprintf(pg_result, "OK: delay=%u",
			1000 * pkt_dev->delay_us + pkt_dev->delay_ns);
L
Linus Torvalds 已提交
962 963
		return count;
	}
L
Luiz Capitulino 已提交
964
	if (!strcmp(name, "udp_src_min")) {
L
Linus Torvalds 已提交
965
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
966 967 968
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
969
		i += len;
L
Luiz Capitulino 已提交
970 971 972 973
		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
974 975 976
		sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
		return count;
	}
L
Luiz Capitulino 已提交
977
	if (!strcmp(name, "udp_dst_min")) {
L
Linus Torvalds 已提交
978
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
979 980 981
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
982
		i += len;
L
Luiz Capitulino 已提交
983 984 985 986
		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
987 988 989
		sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
		return count;
	}
L
Luiz Capitulino 已提交
990
	if (!strcmp(name, "udp_src_max")) {
L
Linus Torvalds 已提交
991
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
992 993 994
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
995
		i += len;
L
Luiz Capitulino 已提交
996 997 998 999
		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
1000 1001 1002
		sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
		return count;
	}
L
Luiz Capitulino 已提交
1003
	if (!strcmp(name, "udp_dst_max")) {
L
Linus Torvalds 已提交
1004
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
1005 1006 1007
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1008
		i += len;
L
Luiz Capitulino 已提交
1009 1010 1011 1012
		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
1013 1014 1015 1016 1017
		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);
L
Luiz Capitulino 已提交
1018 1019 1020
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1021
		i += len;
L
Luiz Capitulino 已提交
1022 1023
		pkt_dev->clone_skb = value;

L
Linus Torvalds 已提交
1024 1025 1026 1027 1028
		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);
L
Luiz Capitulino 已提交
1029 1030 1031
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1032 1033 1034
		i += len;
		pkt_dev->count = value;
		sprintf(pg_result, "OK: count=%llu",
L
Luiz Capitulino 已提交
1035
			(unsigned long long)pkt_dev->count);
L
Linus Torvalds 已提交
1036 1037 1038 1039
		return count;
	}
	if (!strcmp(name, "src_mac_count")) {
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
1040 1041 1042
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1043 1044
		i += len;
		if (pkt_dev->src_mac_count != value) {
L
Luiz Capitulino 已提交
1045 1046 1047 1048 1049
			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
1050 1051 1052 1053
		return count;
	}
	if (!strcmp(name, "dst_mac_count")) {
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
1054 1055 1056
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1057 1058
		i += len;
		if (pkt_dev->dst_mac_count != value) {
L
Luiz Capitulino 已提交
1059 1060 1061 1062 1063
			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
1064 1065 1066
		return count;
	}
	if (!strcmp(name, "flag")) {
L
Luiz Capitulino 已提交
1067 1068
		char f[32];
		memset(f, 0, 32);
L
Linus Torvalds 已提交
1069
		len = strn_len(&user_buffer[i], sizeof(f) - 1);
L
Luiz Capitulino 已提交
1070 1071 1072
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1073 1074 1075
		if (copy_from_user(f, &user_buffer[i], len))
			return -EFAULT;
		i += len;
L
Luiz Capitulino 已提交
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117
		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;

1118 1119 1120 1121 1122 1123
		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
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
		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;

1136 1137 1138
		else if (strcmp(f, "FLOW_SEQ") == 0)
			pkt_dev->flags |= F_FLOW_SEQ;

R
Robert Olsson 已提交
1139 1140 1141 1142 1143
		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
1144 1145 1146 1147 1148 1149

		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
1150 1151 1152 1153 1154
#ifdef CONFIG_XFRM
		else if (strcmp(f, "IPSEC") == 0)
			pkt_dev->flags |= F_IPSEC_ON;
#endif

F
Francesco Fondelli 已提交
1155 1156 1157
		else if (strcmp(f, "!IPV6") == 0)
			pkt_dev->flags &= ~F_IPV6;

L
Luiz Capitulino 已提交
1158 1159 1160 1161
		else {
			sprintf(pg_result,
				"Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
				f,
F
Francesco Fondelli 已提交
1162
				"IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
J
Jamal Hadi Salim 已提交
1163
				"MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
L
Luiz Capitulino 已提交
1164 1165
			return count;
		}
L
Linus Torvalds 已提交
1166 1167 1168 1169 1170
		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);
L
Luiz Capitulino 已提交
1171 1172 1173
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1174

L
Luiz Capitulino 已提交
1175
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1176
			return -EFAULT;
L
Luiz Capitulino 已提交
1177 1178 1179 1180 1181 1182 1183 1184
		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)
1185
			printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
L
Luiz Capitulino 已提交
1186 1187
			       pkt_dev->dst_min);
		i += len;
L
Linus Torvalds 已提交
1188 1189 1190 1191 1192
		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);
L
Luiz Capitulino 已提交
1193 1194 1195
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1196

L
Luiz Capitulino 已提交
1197
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1198 1199
			return -EFAULT;

L
Luiz Capitulino 已提交
1200 1201 1202 1203 1204 1205 1206 1207
		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)
1208
			printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
L
Luiz Capitulino 已提交
1209
			       pkt_dev->dst_max);
L
Linus Torvalds 已提交
1210 1211 1212 1213 1214 1215
		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
1216 1217
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1218 1219 1220

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1221
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1222
			return -EFAULT;
L
Luiz Capitulino 已提交
1223
		buf[len] = 0;
L
Linus Torvalds 已提交
1224 1225

		scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
L
Luiz Capitulino 已提交
1226
		fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
L
Linus Torvalds 已提交
1227 1228 1229

		ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);

L
Luiz Capitulino 已提交
1230
		if (debug)
1231
			printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
L
Linus Torvalds 已提交
1232

L
Luiz Capitulino 已提交
1233
		i += len;
L
Linus Torvalds 已提交
1234 1235 1236 1237 1238
		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
1239 1240
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1241 1242 1243

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1244
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1245
			return -EFAULT;
L
Luiz Capitulino 已提交
1246
		buf[len] = 0;
L
Linus Torvalds 已提交
1247 1248

		scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
L
Luiz Capitulino 已提交
1249
		fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
L
Linus Torvalds 已提交
1250

L
Luiz Capitulino 已提交
1251 1252 1253
		ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
			       &pkt_dev->min_in6_daddr);
		if (debug)
1254
			printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
L
Linus Torvalds 已提交
1255

L
Luiz Capitulino 已提交
1256
		i += len;
L
Linus Torvalds 已提交
1257 1258 1259 1260 1261
		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
1262 1263
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1264 1265 1266

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1267
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1268
			return -EFAULT;
L
Luiz Capitulino 已提交
1269
		buf[len] = 0;
L
Linus Torvalds 已提交
1270 1271

		scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
L
Luiz Capitulino 已提交
1272
		fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
L
Linus Torvalds 已提交
1273

L
Luiz Capitulino 已提交
1274
		if (debug)
1275
			printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
L
Linus Torvalds 已提交
1276

L
Luiz Capitulino 已提交
1277
		i += len;
L
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1278 1279 1280 1281 1282
		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
1283 1284
		if (len < 0)
			return len;
L
Linus Torvalds 已提交
1285 1286 1287

		pkt_dev->flags |= F_IPV6;

L
Luiz Capitulino 已提交
1288
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1289
			return -EFAULT;
L
Luiz Capitulino 已提交
1290
		buf[len] = 0;
L
Linus Torvalds 已提交
1291 1292

		scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
L
Luiz Capitulino 已提交
1293
		fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
L
Linus Torvalds 已提交
1294 1295 1296

		ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);

L
Luiz Capitulino 已提交
1297
		if (debug)
1298
			printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
L
Luiz Capitulino 已提交
1299 1300

		i += len;
L
Linus Torvalds 已提交
1301 1302 1303 1304 1305
		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);
L
Luiz Capitulino 已提交
1306 1307 1308 1309
		if (len < 0) {
			return len;
		}
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1310
			return -EFAULT;
L
Luiz Capitulino 已提交
1311 1312 1313 1314 1315 1316 1317 1318
		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)
1319
			printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
L
Luiz Capitulino 已提交
1320
			       pkt_dev->src_min);
L
Linus Torvalds 已提交
1321 1322 1323 1324 1325 1326
		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);
L
Luiz Capitulino 已提交
1327 1328 1329 1330
		if (len < 0) {
			return len;
		}
		if (copy_from_user(buf, &user_buffer[i], len))
L
Linus Torvalds 已提交
1331
			return -EFAULT;
L
Luiz Capitulino 已提交
1332 1333 1334 1335 1336 1337 1338 1339
		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)
1340
			printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
L
Luiz Capitulino 已提交
1341
			       pkt_dev->src_max);
L
Linus Torvalds 已提交
1342 1343 1344 1345 1346 1347
		i += len;
		sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
		return count;
	}
	if (!strcmp(name, "dst_mac")) {
		char *v = valstr;
1348
		unsigned char old_dmac[ETH_ALEN];
L
Linus Torvalds 已提交
1349
		unsigned char *m = pkt_dev->dst_mac;
1350
		memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
L
Luiz Capitulino 已提交
1351

L
Linus Torvalds 已提交
1352
		len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
L
Luiz Capitulino 已提交
1353 1354 1355
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1356
		memset(valstr, 0, sizeof(valstr));
L
Luiz Capitulino 已提交
1357
		if (copy_from_user(valstr, &user_buffer[i], len))
L
Linus Torvalds 已提交
1358 1359 1360
			return -EFAULT;
		i += len;

L
Luiz Capitulino 已提交
1361
		for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
L
Linus Torvalds 已提交
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
			if (*v >= '0' && *v <= '9') {
				*m *= 16;
				*m += *v - '0';
			}
			if (*v >= 'A' && *v <= 'F') {
				*m *= 16;
				*m += *v - 'A' + 10;
			}
			if (*v >= 'a' && *v <= 'f') {
				*m *= 16;
				*m += *v - 'a' + 10;
			}
			if (*v == ':') {
				m++;
				*m = 0;
			}
		}

		/* Set up Dest MAC */
1381 1382
		if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
			memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
L
Luiz Capitulino 已提交
1383

L
Linus Torvalds 已提交
1384 1385 1386 1387 1388
		sprintf(pg_result, "OK: dstmac");
		return count;
	}
	if (!strcmp(name, "src_mac")) {
		char *v = valstr;
A
Adit Ranadive 已提交
1389
		unsigned char old_smac[ETH_ALEN];
L
Linus Torvalds 已提交
1390 1391
		unsigned char *m = pkt_dev->src_mac;

A
Adit Ranadive 已提交
1392 1393
		memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);

L
Linus Torvalds 已提交
1394
		len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
L
Luiz Capitulino 已提交
1395 1396 1397
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1398
		memset(valstr, 0, sizeof(valstr));
L
Luiz Capitulino 已提交
1399
		if (copy_from_user(valstr, &user_buffer[i], len))
L
Linus Torvalds 已提交
1400 1401 1402
			return -EFAULT;
		i += len;

L
Luiz Capitulino 已提交
1403
		for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
L
Linus Torvalds 已提交
1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419
			if (*v >= '0' && *v <= '9') {
				*m *= 16;
				*m += *v - '0';
			}
			if (*v >= 'A' && *v <= 'F') {
				*m *= 16;
				*m += *v - 'A' + 10;
			}
			if (*v >= 'a' && *v <= 'f') {
				*m *= 16;
				*m += *v - 'a' + 10;
			}
			if (*v == ':') {
				m++;
				*m = 0;
			}
L
Luiz Capitulino 已提交
1420
		}
L
Linus Torvalds 已提交
1421

A
Adit Ranadive 已提交
1422 1423 1424 1425
		/* Set up Src MAC */
		if (compare_ether_addr(old_smac, pkt_dev->src_mac))
			memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);

L
Luiz Capitulino 已提交
1426
		sprintf(pg_result, "OK: srcmac");
L
Linus Torvalds 已提交
1427 1428 1429
		return count;
	}

L
Luiz Capitulino 已提交
1430 1431 1432 1433 1434
	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
1435 1436 1437

	if (!strcmp(name, "flows")) {
		len = num_arg(&user_buffer[i], 10, &value);
L
Luiz Capitulino 已提交
1438 1439 1440
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451
		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);
L
Luiz Capitulino 已提交
1452 1453 1454
		if (len < 0) {
			return len;
		}
L
Linus Torvalds 已提交
1455 1456 1457 1458 1459
		i += len;
		pkt_dev->lflow = value;
		sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
		return count;
	}
L
Luiz Capitulino 已提交
1460

R
Robert Olsson 已提交
1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
	if (!strcmp(name, "queue_map_min")) {
		len = num_arg(&user_buffer[i], 5, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		pkt_dev->queue_map_min = value;
		sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
		return count;
	}

	if (!strcmp(name, "queue_map_max")) {
		len = num_arg(&user_buffer[i], 5, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		pkt_dev->queue_map_max = value;
		sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
		return count;
	}

1483
	if (!strcmp(name, "mpls")) {
S
Stephen Hemminger 已提交
1484 1485
		unsigned n, cnt;

1486
		len = get_labels(&user_buffer[i], pkt_dev);
S
Stephen Hemminger 已提交
1487 1488
		if (len < 0)
			return len;
1489
		i += len;
S
Stephen Hemminger 已提交
1490
		cnt = sprintf(pg_result, "OK: mpls=");
1491
		for (n = 0; n < pkt_dev->nr_labels; n++)
S
Stephen Hemminger 已提交
1492 1493 1494
			cnt += sprintf(pg_result + cnt,
				       "%08x%s", ntohl(pkt_dev->labels[n]),
				       n == pkt_dev->nr_labels-1 ? "" : ",");
F
Francesco Fondelli 已提交
1495 1496 1497 1498 1499 1500

		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)
1501
				printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
F
Francesco Fondelli 已提交
1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515
		}
		return count;
	}

	if (!strcmp(name, "vlan_id")) {
		len = num_arg(&user_buffer[i], 4, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if (value <= 4095) {
			pkt_dev->vlan_id = value;  /* turn on VLAN */

			if (debug)
1516
				printk(KERN_DEBUG "pktgen: VLAN turned on\n");
F
Francesco Fondelli 已提交
1517 1518

			if (debug && pkt_dev->nr_labels)
1519
				printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
F
Francesco Fondelli 已提交
1520 1521 1522 1523 1524 1525 1526 1527

			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)
1528
				printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
F
Francesco Fondelli 已提交
1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572
		}
		return count;
	}

	if (!strcmp(name, "vlan_p")) {
		len = num_arg(&user_buffer[i], 1, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
			pkt_dev->vlan_p = value;
			sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
		} else {
			sprintf(pg_result, "ERROR: vlan_p must be 0-7");
		}
		return count;
	}

	if (!strcmp(name, "vlan_cfi")) {
		len = num_arg(&user_buffer[i], 1, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
			pkt_dev->vlan_cfi = value;
			sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
		} else {
			sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
		}
		return count;
	}

	if (!strcmp(name, "svlan_id")) {
		len = num_arg(&user_buffer[i], 4, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
			pkt_dev->svlan_id = value;  /* turn on SVLAN */

			if (debug)
1573
				printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
F
Francesco Fondelli 已提交
1574 1575

			if (debug && pkt_dev->nr_labels)
1576
				printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
F
Francesco Fondelli 已提交
1577 1578 1579 1580 1581 1582 1583 1584

			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)
1585
				printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
F
Francesco Fondelli 已提交
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616
		}
		return count;
	}

	if (!strcmp(name, "svlan_p")) {
		len = num_arg(&user_buffer[i], 1, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
			pkt_dev->svlan_p = value;
			sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
		} else {
			sprintf(pg_result, "ERROR: svlan_p must be 0-7");
		}
		return count;
	}

	if (!strcmp(name, "svlan_cfi")) {
		len = num_arg(&user_buffer[i], 1, &value);
		if (len < 0) {
			return len;
		}
		i += len;
		if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
			pkt_dev->svlan_cfi = value;
			sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
		} else {
			sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
		}
1617 1618 1619
		return count;
	}

F
Francesco Fondelli 已提交
1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651
	if (!strcmp(name, "tos")) {
		__u32 tmp_value = 0;
		len = hex32_arg(&user_buffer[i], 2, &tmp_value);
		if (len < 0) {
			return len;
		}
		i += len;
		if (len == 2) {
			pkt_dev->tos = tmp_value;
			sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
		} else {
			sprintf(pg_result, "ERROR: tos must be 00-ff");
		}
		return count;
	}

	if (!strcmp(name, "traffic_class")) {
		__u32 tmp_value = 0;
		len = hex32_arg(&user_buffer[i], 2, &tmp_value);
		if (len < 0) {
			return len;
		}
		i += len;
		if (len == 2) {
			pkt_dev->traffic_class = tmp_value;
			sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
		} else {
			sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
		}
		return count;
	}

L
Linus Torvalds 已提交
1652 1653 1654 1655
	sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
	return -EINVAL;
}

1656
static int pktgen_if_open(struct inode *inode, struct file *file)
L
Linus Torvalds 已提交
1657
{
1658 1659
	return single_open(file, pktgen_if_show, PDE(inode)->data);
}
L
Linus Torvalds 已提交
1660

1661
static const struct file_operations pktgen_if_fops = {
L
Luiz Capitulino 已提交
1662 1663 1664 1665 1666 1667
	.owner   = THIS_MODULE,
	.open    = pktgen_if_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pktgen_if_write,
	.release = single_release,
1668
};
L
Linus Torvalds 已提交
1669

1670 1671
static int pktgen_thread_show(struct seq_file *seq, void *v)
{
L
Luiz Capitulino 已提交
1672
	struct pktgen_thread *t = seq->private;
1673
	struct pktgen_dev *pkt_dev;
1674 1675

	BUG_ON(!t);
L
Linus Torvalds 已提交
1676

L
Luiz Capitulino 已提交
1677
	seq_printf(seq, "Running: ");
L
Linus Torvalds 已提交
1678

L
Luiz Capitulino 已提交
1679
	if_lock(t);
1680
	list_for_each_entry(pkt_dev, &t->if_list, list)
L
Luiz Capitulino 已提交
1681
		if (pkt_dev->running)
1682
			seq_printf(seq, "%s ", pkt_dev->odev->name);
L
Linus Torvalds 已提交
1683

L
Luiz Capitulino 已提交
1684 1685
	seq_printf(seq, "\nStopped: ");

1686
	list_for_each_entry(pkt_dev, &t->if_list, list)
L
Luiz Capitulino 已提交
1687
		if (!pkt_dev->running)
1688
			seq_printf(seq, "%s ", pkt_dev->odev->name);
L
Linus Torvalds 已提交
1689 1690

	if (t->result[0])
1691
		seq_printf(seq, "\nResult: %s\n", t->result);
L
Linus Torvalds 已提交
1692
	else
1693
		seq_printf(seq, "\nResult: NA\n");
L
Linus Torvalds 已提交
1694

L
Luiz Capitulino 已提交
1695
	if_unlock(t);
L
Linus Torvalds 已提交
1696

1697
	return 0;
L
Linus Torvalds 已提交
1698 1699
}

1700
static ssize_t pktgen_thread_write(struct file *file,
L
Luiz Capitulino 已提交
1701 1702
				   const char __user * user_buffer,
				   size_t count, loff_t * offset)
L
Linus Torvalds 已提交
1703
{
L
Luiz Capitulino 已提交
1704 1705
	struct seq_file *seq = (struct seq_file *)file->private_data;
	struct pktgen_thread *t = seq->private;
L
Linus Torvalds 已提交
1706 1707
	int i = 0, max, len, ret;
	char name[40];
L
Luiz Capitulino 已提交
1708
	char *pg_result;
1709

L
Linus Torvalds 已提交
1710
	if (count < 1) {
L
Luiz Capitulino 已提交
1711
		//      sprintf(pg_result, "Wrong command format");
L
Linus Torvalds 已提交
1712 1713
		return -EINVAL;
	}
1714

L
Linus Torvalds 已提交
1715
	max = count - i;
L
Luiz Capitulino 已提交
1716 1717
	len = count_trail_chars(&user_buffer[i], max);
	if (len < 0)
1718 1719
		return len;

L
Linus Torvalds 已提交
1720
	i += len;
1721

L
Linus Torvalds 已提交
1722 1723 1724
	/* Read variable name */

	len = strn_len(&user_buffer[i], sizeof(name) - 1);
L
Luiz Capitulino 已提交
1725
	if (len < 0)
1726
		return len;
L
Luiz Capitulino 已提交
1727

L
Linus Torvalds 已提交
1728 1729 1730 1731
	memset(name, 0, sizeof(name));
	if (copy_from_user(name, &user_buffer[i], len))
		return -EFAULT;
	i += len;
1732

L
Luiz Capitulino 已提交
1733
	max = count - i;
L
Linus Torvalds 已提交
1734
	len = count_trail_chars(&user_buffer[i], max);
L
Luiz Capitulino 已提交
1735
	if (len < 0)
1736 1737
		return len;

L
Linus Torvalds 已提交
1738 1739
	i += len;

1740
	if (debug)
1741 1742
		printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
		       name, (unsigned long)count);
L
Linus Torvalds 已提交
1743

L
Luiz Capitulino 已提交
1744
	if (!t) {
1745
		printk(KERN_ERR "pktgen: ERROR: No thread\n");
L
Linus Torvalds 已提交
1746 1747 1748 1749 1750 1751
		ret = -EINVAL;
		goto out;
	}

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

L
Luiz Capitulino 已提交
1752 1753 1754
	if (!strcmp(name, "add_device")) {
		char f[32];
		memset(f, 0, 32);
L
Linus Torvalds 已提交
1755
		len = strn_len(&user_buffer[i], sizeof(f) - 1);
L
Luiz Capitulino 已提交
1756 1757
		if (len < 0) {
			ret = len;
L
Linus Torvalds 已提交
1758 1759
			goto out;
		}
L
Luiz Capitulino 已提交
1760
		if (copy_from_user(f, &user_buffer[i], len))
L
Linus Torvalds 已提交
1761 1762
			return -EFAULT;
		i += len;
1763
		mutex_lock(&pktgen_thread_lock);
L
Luiz Capitulino 已提交
1764
		pktgen_add_device(t, f);
1765
		mutex_unlock(&pktgen_thread_lock);
L
Luiz Capitulino 已提交
1766 1767
		ret = count;
		sprintf(pg_result, "OK: add_device=%s", f);
L
Linus Torvalds 已提交
1768 1769 1770
		goto out;
	}

L
Luiz Capitulino 已提交
1771
	if (!strcmp(name, "rem_device_all")) {
1772
		mutex_lock(&pktgen_thread_lock);
1773
		t->control |= T_REMDEVALL;
1774
		mutex_unlock(&pktgen_thread_lock);
L
Luiz Capitulino 已提交
1775
		schedule_timeout_interruptible(msecs_to_jiffies(125));	/* Propagate thread->control  */
L
Linus Torvalds 已提交
1776
		ret = count;
L
Luiz Capitulino 已提交
1777
		sprintf(pg_result, "OK: rem_device_all");
L
Linus Torvalds 已提交
1778 1779 1780
		goto out;
	}

L
Luiz Capitulino 已提交
1781
	if (!strcmp(name, "max_before_softirq")) {
1782
		sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
L
Luiz Capitulino 已提交
1783
		ret = count;
L
Linus Torvalds 已提交
1784 1785 1786 1787
		goto out;
	}

	ret = -EINVAL;
L
Luiz Capitulino 已提交
1788
out:
L
Linus Torvalds 已提交
1789 1790 1791
	return ret;
}

1792
static int pktgen_thread_open(struct inode *inode, struct file *file)
L
Linus Torvalds 已提交
1793
{
1794
	return single_open(file, pktgen_thread_show, PDE(inode)->data);
L
Linus Torvalds 已提交
1795 1796
}

1797
static const struct file_operations pktgen_thread_fops = {
L
Luiz Capitulino 已提交
1798 1799 1800 1801 1802 1803
	.owner   = THIS_MODULE,
	.open    = pktgen_thread_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.write   = pktgen_thread_write,
	.release = single_release,
1804
};
L
Linus Torvalds 已提交
1805 1806

/* Think find or remove for NN */
L
Luiz Capitulino 已提交
1807
static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
L
Linus Torvalds 已提交
1808 1809 1810 1811
{
	struct pktgen_thread *t;
	struct pktgen_dev *pkt_dev = NULL;

1812
	list_for_each_entry(t, &pktgen_threads, th_list) {
L
Linus Torvalds 已提交
1813 1814
		pkt_dev = pktgen_find_dev(t, ifname);
		if (pkt_dev) {
L
Luiz Capitulino 已提交
1815 1816 1817 1818 1819 1820
			if (remove) {
				if_lock(t);
				pkt_dev->removal_mark = 1;
				t->control |= T_REMDEV;
				if_unlock(t);
			}
L
Linus Torvalds 已提交
1821 1822 1823
			break;
		}
	}
L
Luiz Capitulino 已提交
1824
	return pkt_dev;
L
Linus Torvalds 已提交
1825 1826
}

1827 1828 1829
/*
 * mark a device for removal
 */
1830
static void pktgen_mark_device(const char *ifname)
L
Linus Torvalds 已提交
1831 1832
{
	struct pktgen_dev *pkt_dev = NULL;
1833 1834 1835
	const int max_tries = 10, msec_per_try = 125;
	int i = 0;

1836
	mutex_lock(&pktgen_thread_lock);
S
Stephen Hemminger 已提交
1837
	pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
1838

L
Luiz Capitulino 已提交
1839
	while (1) {
1840 1841

		pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
L
Luiz Capitulino 已提交
1842 1843
		if (pkt_dev == NULL)
			break;	/* success */
1844

1845
		mutex_unlock(&pktgen_thread_lock);
S
Stephen Hemminger 已提交
1846 1847
		pr_debug("pktgen: pktgen_mark_device waiting for %s "
				"to disappear....\n", ifname);
1848
		schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
1849
		mutex_lock(&pktgen_thread_lock);
1850 1851

		if (++i >= max_tries) {
1852 1853
			printk(KERN_ERR "pktgen_mark_device: timed out after "
			       "waiting %d msec for device %s to be removed\n",
L
Luiz Capitulino 已提交
1854
			       msec_per_try * i, ifname);
1855 1856 1857 1858 1859
			break;
		}

	}

1860
	mutex_unlock(&pktgen_thread_lock);
1861
}
1862

1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883
static void pktgen_change_name(struct net_device *dev)
{
	struct pktgen_thread *t;

	list_for_each_entry(t, &pktgen_threads, th_list) {
		struct pktgen_dev *pkt_dev;

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

			remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);

			pkt_dev->entry = create_proc_entry(dev->name, 0600,
							   pg_proc_dir);
			if (!pkt_dev->entry)
				printk(KERN_ERR "pktgen: can't move proc "
				       " entry for '%s'\n", dev->name);
			break;
		}
	}
L
Linus Torvalds 已提交
1884 1885
}

L
Luiz Capitulino 已提交
1886 1887
static int pktgen_device_event(struct notifier_block *unused,
			       unsigned long event, void *ptr)
L
Linus Torvalds 已提交
1888
{
1889
	struct net_device *dev = ptr;
L
Linus Torvalds 已提交
1890

1891
	if (!net_eq(dev_net(dev), &init_net))
1892 1893
		return NOTIFY_DONE;

L
Linus Torvalds 已提交
1894 1895 1896 1897 1898
	/* It is OK that we do not hold the group lock right now,
	 * as we run under the RTNL lock.
	 */

	switch (event) {
1899 1900
	case NETDEV_CHANGENAME:
		pktgen_change_name(dev);
L
Linus Torvalds 已提交
1901
		break;
L
Luiz Capitulino 已提交
1902

L
Linus Torvalds 已提交
1903
	case NETDEV_UNREGISTER:
L
Luiz Capitulino 已提交
1904
		pktgen_mark_device(dev->name);
L
Linus Torvalds 已提交
1905
		break;
1906
	}
L
Linus Torvalds 已提交
1907 1908 1909 1910

	return NOTIFY_DONE;
}

R
Robert Olsson 已提交
1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927
static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname)
{
	char b[IFNAMSIZ+5];
	int i = 0;

	for(i=0; ifname[i] != '@'; i++) {
		if(i == IFNAMSIZ)
			break;

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

	return dev_get_by_name(&init_net, b);
}


L
Linus Torvalds 已提交
1928 1929
/* Associate pktgen_dev with a device. */

1930
static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
L
Luiz Capitulino 已提交
1931
{
L
Linus Torvalds 已提交
1932
	struct net_device *odev;
1933
	int err;
L
Linus Torvalds 已提交
1934 1935 1936 1937

	/* Clean old setups */
	if (pkt_dev->odev) {
		dev_put(pkt_dev->odev);
L
Luiz Capitulino 已提交
1938 1939
		pkt_dev->odev = NULL;
	}
L
Linus Torvalds 已提交
1940

R
Robert Olsson 已提交
1941
	odev = pktgen_dev_get_by_name(pkt_dev, ifname);
L
Linus Torvalds 已提交
1942
	if (!odev) {
1943
		printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
1944
		return -ENODEV;
L
Linus Torvalds 已提交
1945
	}
1946

L
Linus Torvalds 已提交
1947
	if (odev->type != ARPHRD_ETHER) {
1948
		printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
1949 1950
		err = -EINVAL;
	} else if (!netif_running(odev)) {
1951
		printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
1952 1953 1954 1955
		err = -ENETDOWN;
	} else {
		pkt_dev->odev = odev;
		return 0;
L
Linus Torvalds 已提交
1956 1957 1958
	}

	dev_put(odev);
1959
	return err;
L
Linus Torvalds 已提交
1960 1961 1962 1963 1964 1965 1966
}

/* 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)
{
1967 1968
	int ntxq;

L
Luiz Capitulino 已提交
1969
	if (!pkt_dev->odev) {
1970 1971
		printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
		       "setup_inject.\n");
L
Luiz Capitulino 已提交
1972 1973 1974 1975 1976
		sprintf(pkt_dev->result,
			"ERROR: pkt_dev->odev == NULL in setup_inject.\n");
		return;
	}

1977 1978
	/* 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
1979

1980 1981
	if (ntxq <= pkt_dev->queue_map_min) {
		printk(KERN_WARNING "pktgen: WARNING: Requested "
1982 1983 1984 1985
		       "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->odev->name);
1986 1987
		pkt_dev->queue_map_min = ntxq - 1;
	}
1988
	if (pkt_dev->queue_map_max >= ntxq) {
1989
		printk(KERN_WARNING "pktgen: WARNING: Requested "
1990 1991 1992 1993
		       "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->odev->name);
1994 1995 1996
		pkt_dev->queue_map_max = ntxq - 1;
	}

L
Luiz Capitulino 已提交
1997
	/* Default to the interface's mac if not explicitly set. */
L
Linus Torvalds 已提交
1998

1999
	if (is_zero_ether_addr(pkt_dev->src_mac))
L
Luiz Capitulino 已提交
2000
		memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
L
Linus Torvalds 已提交
2001

L
Luiz Capitulino 已提交
2002
	/* Set up Dest MAC */
2003
	memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
L
Linus Torvalds 已提交
2004

L
Luiz Capitulino 已提交
2005 2006 2007 2008
	/* Set up pkt size */
	pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;

	if (pkt_dev->flags & F_IPV6) {
L
Linus Torvalds 已提交
2009
		/*
2010
		 * Skip this automatic address setting until locks or functions
L
Linus Torvalds 已提交
2011 2012 2013 2014
		 * gets exported
		 */

#ifdef NOTNOW
L
Luiz Capitulino 已提交
2015
		int i, set = 0, err = 1;
L
Linus Torvalds 已提交
2016 2017
		struct inet6_dev *idev;

L
Luiz Capitulino 已提交
2018 2019
		for (i = 0; i < IN6_ADDR_HSIZE; i++)
			if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
L
Linus Torvalds 已提交
2020 2021 2022 2023
				set = 1;
				break;
			}

L
Luiz Capitulino 已提交
2024 2025
		if (!set) {

L
Linus Torvalds 已提交
2026 2027 2028 2029 2030 2031
			/*
			 * Use linklevel address if unconfigured.
			 *
			 * use ipv6_get_lladdr if/when it's get exported
			 */

2032
			rcu_read_lock();
L
Linus Torvalds 已提交
2033 2034 2035 2036
			if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
				struct inet6_ifaddr *ifp;

				read_lock_bh(&idev->lock);
L
Luiz Capitulino 已提交
2037 2038 2039 2040 2041 2042 2043 2044
				for (ifp = idev->addr_list; ifp;
				     ifp = ifp->if_next) {
					if (ifp->scope == IFA_LINK
					    && !(ifp->
						 flags & IFA_F_TENTATIVE)) {
						ipv6_addr_copy(&pkt_dev->
							       cur_in6_saddr,
							       &ifp->addr);
L
Linus Torvalds 已提交
2045 2046 2047 2048 2049 2050
						err = 0;
						break;
					}
				}
				read_unlock_bh(&idev->lock);
			}
2051
			rcu_read_unlock();
L
Luiz Capitulino 已提交
2052
			if (err)
2053 2054
				printk(KERN_ERR "pktgen: ERROR: IPv6 link "
				       "address not availble.\n");
L
Linus Torvalds 已提交
2055 2056
		}
#endif
L
Luiz Capitulino 已提交
2057
	} else {
L
Linus Torvalds 已提交
2058 2059 2060
		pkt_dev->saddr_min = 0;
		pkt_dev->saddr_max = 0;
		if (strlen(pkt_dev->src_min) == 0) {
L
Luiz Capitulino 已提交
2061 2062

			struct in_device *in_dev;
L
Linus Torvalds 已提交
2063 2064

			rcu_read_lock();
2065
			in_dev = __in_dev_get_rcu(pkt_dev->odev);
L
Linus Torvalds 已提交
2066 2067
			if (in_dev) {
				if (in_dev->ifa_list) {
L
Luiz Capitulino 已提交
2068 2069
					pkt_dev->saddr_min =
					    in_dev->ifa_list->ifa_address;
L
Linus Torvalds 已提交
2070 2071 2072 2073
					pkt_dev->saddr_max = pkt_dev->saddr_min;
				}
			}
			rcu_read_unlock();
L
Luiz Capitulino 已提交
2074
		} else {
L
Linus Torvalds 已提交
2075 2076 2077 2078 2079 2080 2081
			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
2082 2083 2084 2085 2086 2087 2088
	/* Initialize current values. */
	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
2089 2090 2091 2092 2093 2094 2095 2096 2097 2098
	pkt_dev->nflows = 0;
}

static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us)
{
	__u64 start;
	__u64 now;

	start = now = getCurUs();
	while (now < spin_until_us) {
2099
		/* TODO: optimize sleeping behavior */
L
Luiz Capitulino 已提交
2100
		if (spin_until_us - now > jiffies_to_usecs(1) + 1)
2101 2102
			schedule_timeout_interruptible(1);
		else if (spin_until_us - now > 100) {
L
Linus Torvalds 已提交
2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114
			if (!pkt_dev->running)
				return;
			if (need_resched())
				schedule();
		}

		now = getCurUs();
	}

	pkt_dev->idle_acc += now - start;
}

2115 2116
static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
{
J
Jamal Hadi Salim 已提交
2117
	pkt_dev->pkt_overhead = 0;
2118 2119 2120 2121 2122
	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);
}

2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
static inline int f_seen(struct pktgen_dev *pkt_dev, int flow)
{

	if (pkt_dev->flows[flow].flags & F_INIT)
		return 1;
	else
		return 0;
}

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
2140
			pkt_dev->flows[flow].flags = 0;
2141 2142 2143 2144 2145 2146
			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
2147
		pkt_dev->curfl = flow;
2148

R
Robert Olsson 已提交
2149
		if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
2150
			pkt_dev->flows[flow].count = 0;
R
Robert Olsson 已提交
2151 2152
			pkt_dev->flows[flow].flags = 0;
		}
2153 2154 2155 2156 2157
	}

	return pkt_dev->curfl;
}

J
Jamal Hadi Salim 已提交
2158 2159 2160 2161 2162

#ifdef CONFIG_XFRM
/* If there was already an IPSEC SA, we keep it as is, else
 * we go look for it ...
*/
2163
static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
J
Jamal Hadi Salim 已提交
2164 2165 2166 2167
{
	struct xfrm_state *x = pkt_dev->flows[flow].x;
	if (!x) {
		/*slow path: we dont already have xfrm_state*/
2168 2169
		x = xfrm_stateonly_find(&init_net,
					(xfrm_address_t *)&pkt_dev->cur_daddr,
J
Jamal Hadi Salim 已提交
2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182
					(xfrm_address_t *)&pkt_dev->cur_saddr,
					AF_INET,
					pkt_dev->ipsmode,
					pkt_dev->ipsproto, 0);
		if (x) {
			pkt_dev->flows[flow].x = x;
			set_pkt_overhead(pkt_dev);
			pkt_dev->pkt_overhead+=x->props.header_len;
		}

	}
}
#endif
2183 2184
static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
{
R
Robert Olsson 已提交
2185 2186 2187 2188 2189

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

	else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202
		__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
2203
	pkt_dev->cur_queue_map  = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
2204 2205
}

L
Linus Torvalds 已提交
2206 2207 2208
/* 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
2209 2210 2211 2212 2213
static void mod_cur_headers(struct pktgen_dev *pkt_dev)
{
	__u32 imn;
	__u32 imx;
	int flow = 0;
L
Linus Torvalds 已提交
2214

2215 2216
	if (pkt_dev->cflows)
		flow = f_pick(pkt_dev);
L
Linus Torvalds 已提交
2217 2218

	/*  Deal with source MAC */
L
Luiz Capitulino 已提交
2219 2220 2221 2222 2223
	if (pkt_dev->src_mac_count > 1) {
		__u32 mc;
		__u32 tmp;

		if (pkt_dev->flags & F_MACSRC_RND)
S
Stephen Hemminger 已提交
2224
			mc = random32() % pkt_dev->src_mac_count;
L
Luiz Capitulino 已提交
2225 2226
		else {
			mc = pkt_dev->cur_src_mac_offset++;
R
Robert Olsson 已提交
2227
			if (pkt_dev->cur_src_mac_offset >=
L
Luiz Capitulino 已提交
2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249
			    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
2250
			mc = random32() % pkt_dev->dst_mac_count;
L
Luiz Capitulino 已提交
2251 2252 2253

		else {
			mc = pkt_dev->cur_dst_mac_offset++;
R
Robert Olsson 已提交
2254
			if (pkt_dev->cur_dst_mac_offset >=
L
Luiz Capitulino 已提交
2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
			    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;
	}

2272 2273
	if (pkt_dev->flags & F_MPLS_RND) {
		unsigned i;
2274
		for (i = 0; i < pkt_dev->nr_labels; i++)
2275 2276
			if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
				pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
S
Stephen Hemminger 已提交
2277
					     ((__force __be32)random32() &
2278 2279 2280
						      htonl(0x000fffff));
	}

F
Francesco Fondelli 已提交
2281
	if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
S
Stephen Hemminger 已提交
2282
		pkt_dev->vlan_id = random32() & (4096-1);
F
Francesco Fondelli 已提交
2283 2284 2285
	}

	if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
S
Stephen Hemminger 已提交
2286
		pkt_dev->svlan_id = random32() & (4096 - 1);
F
Francesco Fondelli 已提交
2287 2288
	}

L
Luiz Capitulino 已提交
2289 2290
	if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
		if (pkt_dev->flags & F_UDPSRC_RND)
S
Stephen Hemminger 已提交
2291 2292 2293
			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
2294 2295

		else {
L
Linus Torvalds 已提交
2296 2297 2298
			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
2299 2300 2301 2302 2303
		}
	}

	if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
		if (pkt_dev->flags & F_UDPDST_RND) {
S
Stephen Hemminger 已提交
2304 2305 2306
			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
2307
		} else {
L
Linus Torvalds 已提交
2308
			pkt_dev->cur_udp_dst++;
L
Luiz Capitulino 已提交
2309
			if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
L
Linus Torvalds 已提交
2310
				pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
L
Luiz Capitulino 已提交
2311 2312
		}
	}
L
Linus Torvalds 已提交
2313 2314 2315

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

L
Luiz Capitulino 已提交
2316 2317 2318
		if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
							 ntohl(pkt_dev->
							       saddr_max))) {
L
Linus Torvalds 已提交
2319
			__u32 t;
L
Luiz Capitulino 已提交
2320
			if (pkt_dev->flags & F_IPSRC_RND)
S
Stephen Hemminger 已提交
2321
				t = random32() % (imx - imn) + imn;
L
Linus Torvalds 已提交
2322 2323 2324 2325 2326 2327 2328 2329 2330
			else {
				t = ntohl(pkt_dev->cur_saddr);
				t++;
				if (t > imx) {
					t = imn;
				}
			}
			pkt_dev->cur_saddr = htonl(t);
		}
L
Luiz Capitulino 已提交
2331

2332
		if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
L
Linus Torvalds 已提交
2333 2334
			pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
		} else {
A
Al Viro 已提交
2335 2336 2337
			imn = ntohl(pkt_dev->daddr_min);
			imx = ntohl(pkt_dev->daddr_max);
			if (imn < imx) {
L
Linus Torvalds 已提交
2338
				__u32 t;
A
Al Viro 已提交
2339
				__be32 s;
L
Linus Torvalds 已提交
2340 2341
				if (pkt_dev->flags & F_IPDST_RND) {

S
Stephen Hemminger 已提交
2342
					t = random32() % (imx - imn) + imn;
A
Al Viro 已提交
2343
					s = htonl(t);
L
Linus Torvalds 已提交
2344

2345 2346
					while (ipv4_is_loopback(s) ||
					       ipv4_is_multicast(s) ||
2347
					       ipv4_is_lbcast(s) ||
2348 2349
					       ipv4_is_zeronet(s) ||
					       ipv4_is_local_multicast(s)) {
S
Stephen Hemminger 已提交
2350
						t = random32() % (imx - imn) + imn;
A
Al Viro 已提交
2351
						s = htonl(t);
L
Linus Torvalds 已提交
2352
					}
A
Al Viro 已提交
2353 2354
					pkt_dev->cur_daddr = s;
				} else {
L
Linus Torvalds 已提交
2355 2356 2357 2358 2359 2360 2361 2362
					t = ntohl(pkt_dev->cur_daddr);
					t++;
					if (t > imx) {
						t = imn;
					}
					pkt_dev->cur_daddr = htonl(t);
				}
			}
L
Luiz Capitulino 已提交
2363
			if (pkt_dev->cflows) {
2364
				pkt_dev->flows[flow].flags |= F_INIT;
L
Luiz Capitulino 已提交
2365 2366
				pkt_dev->flows[flow].cur_daddr =
				    pkt_dev->cur_daddr;
J
Jamal Hadi Salim 已提交
2367 2368 2369 2370
#ifdef CONFIG_XFRM
				if (pkt_dev->flags & F_IPSEC_ON)
					get_ipsec_sa(pkt_dev, flow);
#endif
L
Linus Torvalds 已提交
2371 2372 2373
				pkt_dev->nflows++;
			}
		}
L
Luiz Capitulino 已提交
2374 2375 2376 2377 2378 2379
	} else {		/* IPV6 * */

		if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
		    pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
		    pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
		    pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
L
Linus Torvalds 已提交
2380 2381 2382 2383 2384
		else {
			int i;

			/* Only random destinations yet */

L
Luiz Capitulino 已提交
2385
			for (i = 0; i < 4; i++) {
L
Linus Torvalds 已提交
2386
				pkt_dev->cur_in6_daddr.s6_addr32[i] =
S
Stephen Hemminger 已提交
2387
				    (((__force __be32)random32() |
L
Luiz Capitulino 已提交
2388 2389
				      pkt_dev->min_in6_daddr.s6_addr32[i]) &
				     pkt_dev->max_in6_daddr.s6_addr32[i]);
L
Linus Torvalds 已提交
2390
			}
L
Luiz Capitulino 已提交
2391
		}
L
Linus Torvalds 已提交
2392 2393
	}

L
Luiz Capitulino 已提交
2394 2395 2396
	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
2397 2398 2399
			t = random32() %
				(pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
				+ pkt_dev->min_pkt_size;
L
Luiz Capitulino 已提交
2400
		} else {
L
Linus Torvalds 已提交
2401
			t = pkt_dev->cur_pkt_size + 1;
L
Luiz Capitulino 已提交
2402
			if (t > pkt_dev->max_pkt_size)
L
Linus Torvalds 已提交
2403
				t = pkt_dev->min_pkt_size;
L
Luiz Capitulino 已提交
2404 2405 2406
		}
		pkt_dev->cur_pkt_size = t;
	}
L
Linus Torvalds 已提交
2407

2408
	set_cur_queue_map(pkt_dev);
R
Robert Olsson 已提交
2409

L
Linus Torvalds 已提交
2410 2411 2412
	pkt_dev->flows[flow].count++;
}

J
Jamal Hadi Salim 已提交
2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430

#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;
	struct iphdr *iph;

	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);
	iph = ip_hdr(skb);

2431
	err = x->outer_mode->output(x, skb);
J
Jamal Hadi Salim 已提交
2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
	if (err)
		goto error;
	err = x->type->output(x, skb);
	if (err)
		goto error;

	x->curlft.bytes +=skb->len;
	x->curlft.packets++;
error:
	spin_unlock(&x->lock);
	return err;
}

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

static inline int process_ipsec(struct pktgen_dev *pkt_dev,
			      struct sk_buff *skb, __be16 protocol)
{
	if (pkt_dev->flags & F_IPSEC_ON) {
		struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
		int nhead = 0;
		if (x) {
			int ret;
			__u8 *eth;
			nhead = x->props.header_len - skb_headroom(skb);
			if (nhead >0) {
				ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
				if (ret < 0) {
2473 2474
					printk(KERN_ERR "Error expanding "
					       "ipsec packet %d\n",ret);
2475
					goto err;
J
Jamal Hadi Salim 已提交
2476 2477 2478 2479 2480 2481 2482
				}
			}

			/* ipsec is not expecting ll header */
			skb_pull(skb, ETH_HLEN);
			ret = pktgen_output_ipsec(skb, pkt_dev);
			if (ret) {
2483 2484
				printk(KERN_ERR "Error creating ipsec "
				       "packet %d\n",ret);
2485
				goto err;
J
Jamal Hadi Salim 已提交
2486 2487 2488 2489 2490 2491 2492 2493
			}
			/* restore ll */
			eth = (__u8 *) skb_push(skb, ETH_HLEN);
			memcpy(eth, pkt_dev->hh, 12);
			*(u16 *) & eth[12] = protocol;
		}
	}
	return 1;
2494 2495 2496
err:
	kfree_skb(skb);
	return 0;
J
Jamal Hadi Salim 已提交
2497 2498 2499
}
#endif

2500 2501 2502
static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
{
	unsigned i;
2503
	for (i = 0; i < pkt_dev->nr_labels; i++) {
2504 2505 2506 2507 2508 2509
		*mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
	}
	mpls--;
	*mpls |= MPLS_STACK_BOTTOM;
}

A
Al Viro 已提交
2510 2511 2512 2513 2514 2515
static inline __be16 build_tci(unsigned int id, unsigned int cfi,
			       unsigned int prio)
{
	return htons(id | (cfi << 12) | (prio << 13));
}

L
Luiz Capitulino 已提交
2516 2517
static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
					struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
2518 2519 2520 2521 2522 2523
{
	struct sk_buff *skb = NULL;
	__u8 *eth;
	struct udphdr *udph;
	int datalen, iplen;
	struct iphdr *iph;
L
Luiz Capitulino 已提交
2524
	struct pktgen_hdr *pgh = NULL;
2525
	__be16 protocol = htons(ETH_P_IP);
2526
	__be32 *mpls;
F
Francesco Fondelli 已提交
2527 2528 2529 2530
	__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 */
2531
	u16 queue_map;
2532 2533

	if (pkt_dev->nr_labels)
2534
		protocol = htons(ETH_P_MPLS_UC);
L
Luiz Capitulino 已提交
2535

F
Francesco Fondelli 已提交
2536
	if (pkt_dev->vlan_id != 0xffff)
2537
		protocol = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2538

2539 2540 2541
	/* Update any of the values, used when we're incrementing various
	 * fields.
	 */
2542
	queue_map = pkt_dev->cur_queue_map;
2543 2544
	mod_cur_headers(pkt_dev);

2545
	datalen = (odev->hard_header_len + 16) & ~0xf;
2546
	skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
2547
			pkt_dev->pkt_overhead, GFP_ATOMIC);
L
Linus Torvalds 已提交
2548 2549 2550 2551 2552
	if (!skb) {
		sprintf(pkt_dev->result, "No memory");
		return NULL;
	}

2553
	skb_reserve(skb, datalen);
L
Linus Torvalds 已提交
2554 2555 2556

	/*  Reserve for ethernet and IP header  */
	eth = (__u8 *) skb_push(skb, 14);
2557 2558 2559
	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
2560 2561

	if (pkt_dev->vlan_id != 0xffff) {
2562
		if (pkt_dev->svlan_id != 0xffff) {
F
Francesco Fondelli 已提交
2563
			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2564 2565 2566
			*svlan_tci = build_tci(pkt_dev->svlan_id,
					       pkt_dev->svlan_cfi,
					       pkt_dev->svlan_p);
F
Francesco Fondelli 已提交
2567
			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2568
			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2569 2570
		}
		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2571 2572 2573
		*vlan_tci = build_tci(pkt_dev->vlan_id,
				      pkt_dev->vlan_cfi,
				      pkt_dev->vlan_p);
F
Francesco Fondelli 已提交
2574
		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2575
		*vlan_encapsulated_proto = htons(ETH_P_IP);
F
Francesco Fondelli 已提交
2576 2577
	}

2578
	skb->network_header = skb->tail;
2579
	skb->transport_header = skb->network_header + sizeof(struct iphdr);
2580
	skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
2581
	skb_set_queue_mapping(skb, queue_map);
2582 2583
	iph = ip_hdr(skb);
	udph = udp_hdr(skb);
L
Linus Torvalds 已提交
2584 2585

	memcpy(eth, pkt_dev->hh, 12);
A
Al Viro 已提交
2586
	*(__be16 *) & eth[12] = protocol;
L
Linus Torvalds 已提交
2587

2588 2589
	/* Eth + IPh + UDPh + mpls */
	datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
2590
		  pkt_dev->pkt_overhead;
L
Luiz Capitulino 已提交
2591
	if (datalen < sizeof(struct pktgen_hdr))
L
Linus Torvalds 已提交
2592
		datalen = sizeof(struct pktgen_hdr);
L
Luiz Capitulino 已提交
2593

L
Linus Torvalds 已提交
2594 2595
	udph->source = htons(pkt_dev->cur_udp_src);
	udph->dest = htons(pkt_dev->cur_udp_dst);
L
Luiz Capitulino 已提交
2596 2597
	udph->len = htons(datalen + 8);	/* DATA + udphdr */
	udph->check = 0;	/* No checksum */
L
Linus Torvalds 已提交
2598 2599 2600 2601

	iph->ihl = 5;
	iph->version = 4;
	iph->ttl = 32;
F
Francesco Fondelli 已提交
2602
	iph->tos = pkt_dev->tos;
L
Luiz Capitulino 已提交
2603
	iph->protocol = IPPROTO_UDP;	/* UDP */
L
Linus Torvalds 已提交
2604 2605 2606 2607 2608 2609
	iph->saddr = pkt_dev->cur_saddr;
	iph->daddr = pkt_dev->cur_daddr;
	iph->frag_off = 0;
	iplen = 20 + 8 + datalen;
	iph->tot_len = htons(iplen);
	iph->check = 0;
L
Luiz Capitulino 已提交
2610
	iph->check = ip_fast_csum((void *)iph, iph->ihl);
2611
	skb->protocol = protocol;
2612
	skb->mac_header = (skb->network_header - ETH_HLEN -
2613
			   pkt_dev->pkt_overhead);
L
Linus Torvalds 已提交
2614 2615 2616
	skb->dev = odev;
	skb->pkt_type = PACKET_HOST;

L
Luiz Capitulino 已提交
2617 2618
	if (pkt_dev->nfrags <= 0)
		pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
L
Linus Torvalds 已提交
2619 2620 2621 2622
	else {
		int frags = pkt_dev->nfrags;
		int i;

L
Luiz Capitulino 已提交
2623 2624
		pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);

L
Linus Torvalds 已提交
2625 2626
		if (frags > MAX_SKB_FRAGS)
			frags = MAX_SKB_FRAGS;
L
Luiz Capitulino 已提交
2627 2628 2629
		if (datalen > frags * PAGE_SIZE) {
			skb_put(skb, datalen - frags * PAGE_SIZE);
			datalen = frags * PAGE_SIZE;
L
Linus Torvalds 已提交
2630 2631 2632 2633 2634 2635 2636 2637
		}

		i = 0;
		while (datalen > 0) {
			struct page *page = alloc_pages(GFP_KERNEL, 0);
			skb_shinfo(skb)->frags[i].page = page;
			skb_shinfo(skb)->frags[i].page_offset = 0;
			skb_shinfo(skb)->frags[i].size =
L
Luiz Capitulino 已提交
2638
			    (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
L
Linus Torvalds 已提交
2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657
			datalen -= skb_shinfo(skb)->frags[i].size;
			skb->len += skb_shinfo(skb)->frags[i].size;
			skb->data_len += skb_shinfo(skb)->frags[i].size;
			i++;
			skb_shinfo(skb)->nr_frags = i;
		}

		while (i < frags) {
			int rem;

			if (i == 0)
				break;

			rem = skb_shinfo(skb)->frags[i - 1].size / 2;
			if (rem == 0)
				break;

			skb_shinfo(skb)->frags[i - 1].size -= rem;

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2658 2659
			skb_shinfo(skb)->frags[i] =
			    skb_shinfo(skb)->frags[i - 1];
L
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2660
			get_page(skb_shinfo(skb)->frags[i].page);
L
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2661 2662 2663 2664
			skb_shinfo(skb)->frags[i].page =
			    skb_shinfo(skb)->frags[i - 1].page;
			skb_shinfo(skb)->frags[i].page_offset +=
			    skb_shinfo(skb)->frags[i - 1].size;
L
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2665 2666 2667 2668 2669 2670
			skb_shinfo(skb)->frags[i].size = rem;
			i++;
			skb_shinfo(skb)->nr_frags = i;
		}
	}

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2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682
	/* Stamp the time, and sequence number, convert them to network byte order */

	if (pgh) {
		struct timeval timestamp;

		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);
	}
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2683

J
Jamal Hadi Salim 已提交
2684 2685 2686 2687 2688
#ifdef CONFIG_XFRM
	if (!process_ipsec(pkt_dev, skb, protocol))
		return NULL;
#endif

L
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2689 2690 2691 2692
	return skb;
}

/*
2693
 * scan_ip6, fmt_ip taken from dietlibc-0.21
L
Linus Torvalds 已提交
2694 2695
 * Author Felix von Leitner <felix-dietlibc@fefe.de>
 *
2696
 * Slightly modified for kernel.
L
Linus Torvalds 已提交
2697 2698 2699 2700
 * Should be candidate for net/ipv4/utils.c
 * --ro
 */

L
Luiz Capitulino 已提交
2701
static unsigned int scan_ip6(const char *s, char ip[16])
L
Linus Torvalds 已提交
2702 2703
{
	unsigned int i;
L
Luiz Capitulino 已提交
2704
	unsigned int len = 0;
L
Linus Torvalds 已提交
2705 2706
	unsigned long u;
	char suffix[16];
L
Luiz Capitulino 已提交
2707 2708
	unsigned int prefixlen = 0;
	unsigned int suffixlen = 0;
A
Al Viro 已提交
2709
	__be32 tmp;
S
Stephen Hemminger 已提交
2710
	char *pos;
L
Linus Torvalds 已提交
2711

L
Luiz Capitulino 已提交
2712 2713
	for (i = 0; i < 16; i++)
		ip[i] = 0;
L
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2714 2715 2716 2717

	for (;;) {
		if (*s == ':') {
			len++;
L
Luiz Capitulino 已提交
2718 2719
			if (s[1] == ':') {	/* Found "::", skip to part 2 */
				s += 2;
L
Linus Torvalds 已提交
2720 2721 2722 2723 2724 2725
				len++;
				break;
			}
			s++;
		}

S
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2726 2727
		u = simple_strtoul(s, &pos, 16);
		i = pos - s;
L
Luiz Capitulino 已提交
2728 2729 2730
		if (!i)
			return 0;
		if (prefixlen == 12 && s[i] == '.') {
L
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2731 2732 2733 2734

			/* the last 4 bytes may be written as IPv4 address */

			tmp = in_aton(s);
L
Luiz Capitulino 已提交
2735 2736
			memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
			return i + len;
L
Linus Torvalds 已提交
2737 2738 2739
		}
		ip[prefixlen++] = (u >> 8);
		ip[prefixlen++] = (u & 255);
L
Luiz Capitulino 已提交
2740 2741 2742
		s += i;
		len += i;
		if (prefixlen == 16)
L
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2743 2744 2745 2746 2747 2748
			return len;
	}

/* part 2, after "::" */
	for (;;) {
		if (*s == ':') {
L
Luiz Capitulino 已提交
2749
			if (suffixlen == 0)
L
Linus Torvalds 已提交
2750 2751 2752
				break;
			s++;
			len++;
L
Luiz Capitulino 已提交
2753
		} else if (suffixlen != 0)
L
Linus Torvalds 已提交
2754
			break;
S
Stephen Hemminger 已提交
2755 2756 2757

		u = simple_strtol(s, &pos, 16);
		i = pos - s;
L
Linus Torvalds 已提交
2758
		if (!i) {
L
Luiz Capitulino 已提交
2759 2760
			if (*s)
				len--;
L
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2761 2762
			break;
		}
L
Luiz Capitulino 已提交
2763
		if (suffixlen + prefixlen <= 12 && s[i] == '.') {
L
Linus Torvalds 已提交
2764
			tmp = in_aton(s);
L
Luiz Capitulino 已提交
2765 2766 2767 2768
			memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
			       sizeof(tmp));
			suffixlen += 4;
			len += strlen(s);
L
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2769 2770 2771 2772
			break;
		}
		suffix[suffixlen++] = (u >> 8);
		suffix[suffixlen++] = (u & 255);
L
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2773 2774 2775
		s += i;
		len += i;
		if (prefixlen + suffixlen == 16)
L
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2776 2777
			break;
	}
L
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2778 2779
	for (i = 0; i < suffixlen; i++)
		ip[16 - suffixlen + i] = suffix[i];
L
Linus Torvalds 已提交
2780 2781 2782
	return len;
}

L
Luiz Capitulino 已提交
2783 2784 2785
static char tohex(char hexdigit)
{
	return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
L
Linus Torvalds 已提交
2786 2787
}

L
Luiz Capitulino 已提交
2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801
static int fmt_xlong(char *s, unsigned int i)
{
	char *bak = s;
	*s = tohex((i >> 12) & 0xf);
	if (s != bak || *s != '0')
		++s;
	*s = tohex((i >> 8) & 0xf);
	if (s != bak || *s != '0')
		++s;
	*s = tohex((i >> 4) & 0xf);
	if (s != bak || *s != '0')
		++s;
	*s = tohex(i & 0xf);
	return s - bak + 1;
L
Linus Torvalds 已提交
2802 2803
}

L
Luiz Capitulino 已提交
2804 2805
static unsigned int fmt_ip6(char *s, const char ip[16])
{
L
Linus Torvalds 已提交
2806 2807 2808 2809 2810 2811
	unsigned int len;
	unsigned int i;
	unsigned int temp;
	unsigned int compressing;
	int j;

L
Luiz Capitulino 已提交
2812 2813 2814
	len = 0;
	compressing = 0;
	for (j = 0; j < 16; j += 2) {
L
Linus Torvalds 已提交
2815 2816

#ifdef V4MAPPEDPREFIX
L
Luiz Capitulino 已提交
2817 2818 2819 2820
		if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
			inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
			temp = strlen(s);
			return len + temp;
L
Linus Torvalds 已提交
2821 2822
		}
#endif
L
Luiz Capitulino 已提交
2823 2824
		temp = ((unsigned long)(unsigned char)ip[j] << 8) +
		    (unsigned long)(unsigned char)ip[j + 1];
L
Linus Torvalds 已提交
2825 2826
		if (temp == 0) {
			if (!compressing) {
L
Luiz Capitulino 已提交
2827 2828 2829 2830
				compressing = 1;
				if (j == 0) {
					*s++ = ':';
					++len;
L
Linus Torvalds 已提交
2831 2832 2833 2834
				}
			}
		} else {
			if (compressing) {
L
Luiz Capitulino 已提交
2835 2836 2837
				compressing = 0;
				*s++ = ':';
				++len;
L
Linus Torvalds 已提交
2838
			}
L
Luiz Capitulino 已提交
2839 2840 2841 2842
			i = fmt_xlong(s, temp);
			len += i;
			s += i;
			if (j < 14) {
L
Linus Torvalds 已提交
2843 2844 2845 2846 2847 2848
				*s++ = ':';
				++len;
			}
		}
	}
	if (compressing) {
L
Luiz Capitulino 已提交
2849 2850
		*s++ = ':';
		++len;
L
Linus Torvalds 已提交
2851
	}
L
Luiz Capitulino 已提交
2852
	*s = 0;
L
Linus Torvalds 已提交
2853 2854 2855
	return len;
}

L
Luiz Capitulino 已提交
2856 2857
static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
					struct pktgen_dev *pkt_dev)
L
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2858 2859 2860 2861 2862 2863
{
	struct sk_buff *skb = NULL;
	__u8 *eth;
	struct udphdr *udph;
	int datalen;
	struct ipv6hdr *iph;
L
Luiz Capitulino 已提交
2864
	struct pktgen_hdr *pgh = NULL;
2865
	__be16 protocol = htons(ETH_P_IPV6);
2866
	__be32 *mpls;
F
Francesco Fondelli 已提交
2867 2868 2869 2870
	__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 */
2871
	u16 queue_map;
2872 2873

	if (pkt_dev->nr_labels)
2874
		protocol = htons(ETH_P_MPLS_UC);
2875

F
Francesco Fondelli 已提交
2876
	if (pkt_dev->vlan_id != 0xffff)
2877
		protocol = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2878

2879 2880 2881
	/* Update any of the values, used when we're incrementing various
	 * fields.
	 */
2882
	queue_map = pkt_dev->cur_queue_map;
2883 2884
	mod_cur_headers(pkt_dev);

2885
	skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
2886
			pkt_dev->pkt_overhead, GFP_ATOMIC);
L
Linus Torvalds 已提交
2887 2888 2889 2890 2891 2892 2893 2894 2895
	if (!skb) {
		sprintf(pkt_dev->result, "No memory");
		return NULL;
	}

	skb_reserve(skb, 16);

	/*  Reserve for ethernet and IP header  */
	eth = (__u8 *) skb_push(skb, 14);
2896 2897 2898
	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
2899 2900

	if (pkt_dev->vlan_id != 0xffff) {
2901
		if (pkt_dev->svlan_id != 0xffff) {
F
Francesco Fondelli 已提交
2902
			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2903 2904 2905
			*svlan_tci = build_tci(pkt_dev->svlan_id,
					       pkt_dev->svlan_cfi,
					       pkt_dev->svlan_p);
F
Francesco Fondelli 已提交
2906
			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2907
			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
F
Francesco Fondelli 已提交
2908 2909
		}
		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
A
Al Viro 已提交
2910 2911 2912
		*vlan_tci = build_tci(pkt_dev->vlan_id,
				      pkt_dev->vlan_cfi,
				      pkt_dev->vlan_p);
F
Francesco Fondelli 已提交
2913
		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
2914
		*vlan_encapsulated_proto = htons(ETH_P_IPV6);
F
Francesco Fondelli 已提交
2915 2916
	}

2917
	skb->network_header = skb->tail;
2918
	skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
2919
	skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
2920
	skb_set_queue_mapping(skb, queue_map);
2921 2922
	iph = ipv6_hdr(skb);
	udph = udp_hdr(skb);
L
Linus Torvalds 已提交
2923 2924

	memcpy(eth, pkt_dev->hh, 12);
A
Al Viro 已提交
2925
	*(__be16 *) & eth[12] = protocol;
2926

2927 2928 2929
	/* Eth + IPh + UDPh + mpls */
	datalen = pkt_dev->cur_pkt_size - 14 -
		  sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
2930
		  pkt_dev->pkt_overhead;
L
Linus Torvalds 已提交
2931

L
Luiz Capitulino 已提交
2932
	if (datalen < sizeof(struct pktgen_hdr)) {
L
Linus Torvalds 已提交
2933 2934
		datalen = sizeof(struct pktgen_hdr);
		if (net_ratelimit())
L
Luiz Capitulino 已提交
2935 2936
			printk(KERN_INFO "pktgen: increased datalen to %d\n",
			       datalen);
L
Linus Torvalds 已提交
2937 2938 2939 2940
	}

	udph->source = htons(pkt_dev->cur_udp_src);
	udph->dest = htons(pkt_dev->cur_udp_dst);
L
Luiz Capitulino 已提交
2941 2942
	udph->len = htons(datalen + sizeof(struct udphdr));
	udph->check = 0;	/* No checksum */
L
Linus Torvalds 已提交
2943

2944
	*(__be32 *) iph = htonl(0x60000000);	/* Version + flow */
L
Linus Torvalds 已提交
2945

F
Francesco Fondelli 已提交
2946 2947
	if (pkt_dev->traffic_class) {
		/* Version + traffic class + flow (0) */
A
Al Viro 已提交
2948
		*(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
F
Francesco Fondelli 已提交
2949 2950
	}

L
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2951 2952 2953 2954 2955 2956 2957 2958
	iph->hop_limit = 32;

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

	ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
	ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);

2959
	skb->mac_header = (skb->network_header - ETH_HLEN -
2960
			   pkt_dev->pkt_overhead);
2961
	skb->protocol = protocol;
L
Linus Torvalds 已提交
2962 2963 2964
	skb->dev = odev;
	skb->pkt_type = PACKET_HOST;

L
Luiz Capitulino 已提交
2965 2966
	if (pkt_dev->nfrags <= 0)
		pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
L
Linus Torvalds 已提交
2967 2968 2969 2970
	else {
		int frags = pkt_dev->nfrags;
		int i;

L
Luiz Capitulino 已提交
2971 2972
		pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);

L
Linus Torvalds 已提交
2973 2974
		if (frags > MAX_SKB_FRAGS)
			frags = MAX_SKB_FRAGS;
L
Luiz Capitulino 已提交
2975 2976 2977
		if (datalen > frags * PAGE_SIZE) {
			skb_put(skb, datalen - frags * PAGE_SIZE);
			datalen = frags * PAGE_SIZE;
L
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2978 2979 2980 2981 2982 2983 2984 2985
		}

		i = 0;
		while (datalen > 0) {
			struct page *page = alloc_pages(GFP_KERNEL, 0);
			skb_shinfo(skb)->frags[i].page = page;
			skb_shinfo(skb)->frags[i].page_offset = 0;
			skb_shinfo(skb)->frags[i].size =
L
Luiz Capitulino 已提交
2986
			    (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
L
Linus Torvalds 已提交
2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005
			datalen -= skb_shinfo(skb)->frags[i].size;
			skb->len += skb_shinfo(skb)->frags[i].size;
			skb->data_len += skb_shinfo(skb)->frags[i].size;
			i++;
			skb_shinfo(skb)->nr_frags = i;
		}

		while (i < frags) {
			int rem;

			if (i == 0)
				break;

			rem = skb_shinfo(skb)->frags[i - 1].size / 2;
			if (rem == 0)
				break;

			skb_shinfo(skb)->frags[i - 1].size -= rem;

L
Luiz Capitulino 已提交
3006 3007
			skb_shinfo(skb)->frags[i] =
			    skb_shinfo(skb)->frags[i - 1];
L
Linus Torvalds 已提交
3008
			get_page(skb_shinfo(skb)->frags[i].page);
L
Luiz Capitulino 已提交
3009 3010 3011 3012
			skb_shinfo(skb)->frags[i].page =
			    skb_shinfo(skb)->frags[i - 1].page;
			skb_shinfo(skb)->frags[i].page_offset +=
			    skb_shinfo(skb)->frags[i - 1].size;
L
Linus Torvalds 已提交
3013 3014 3015 3016 3017 3018
			skb_shinfo(skb)->frags[i].size = rem;
			i++;
			skb_shinfo(skb)->nr_frags = i;
		}
	}

L
Luiz Capitulino 已提交
3019
	/* Stamp the time, and sequence number, convert them to network byte order */
L
Linus Torvalds 已提交
3020
	/* should we update cloned packets too ? */
L
Luiz Capitulino 已提交
3021 3022 3023 3024 3025 3026 3027 3028 3029 3030
	if (pgh) {
		struct timeval timestamp;

		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);
	}
F
Francesco Fondelli 已提交
3031
	/* pkt_dev->seq_num++; FF: you really mean this? */
L
Luiz Capitulino 已提交
3032

L
Linus Torvalds 已提交
3033 3034 3035
	return skb;
}

L
Luiz Capitulino 已提交
3036 3037
static inline struct sk_buff *fill_packet(struct net_device *odev,
					  struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3038
{
L
Luiz Capitulino 已提交
3039
	if (pkt_dev->flags & F_IPV6)
L
Linus Torvalds 已提交
3040 3041 3042 3043 3044
		return fill_packet_ipv6(odev, pkt_dev);
	else
		return fill_packet_ipv4(odev, pkt_dev);
}

L
Luiz Capitulino 已提交
3045
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3046
{
L
Luiz Capitulino 已提交
3047 3048
	pkt_dev->seq_num = 1;
	pkt_dev->idle_acc = 0;
L
Linus Torvalds 已提交
3049
	pkt_dev->sofar = 0;
L
Luiz Capitulino 已提交
3050 3051
	pkt_dev->tx_bytes = 0;
	pkt_dev->errors = 0;
L
Linus Torvalds 已提交
3052 3053 3054 3055 3056 3057
}

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

static void pktgen_run(struct pktgen_thread *t)
{
3058
	struct pktgen_dev *pkt_dev;
L
Linus Torvalds 已提交
3059 3060
	int started = 0;

S
Stephen Hemminger 已提交
3061
	pr_debug("pktgen: entering pktgen_run. %p\n", t);
L
Linus Torvalds 已提交
3062 3063

	if_lock(t);
3064
	list_for_each_entry(pkt_dev, &t->if_list, list) {
L
Linus Torvalds 已提交
3065 3066 3067 3068 3069 3070

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

L
Luiz Capitulino 已提交
3071
		if (pkt_dev->odev) {
L
Linus Torvalds 已提交
3072
			pktgen_clear_counters(pkt_dev);
L
Luiz Capitulino 已提交
3073
			pkt_dev->running = 1;	/* Cranke yeself! */
L
Linus Torvalds 已提交
3074 3075
			pkt_dev->skb = NULL;
			pkt_dev->started_at = getCurUs();
L
Luiz Capitulino 已提交
3076
			pkt_dev->next_tx_us = getCurUs();	/* Transmit immediately */
L
Linus Torvalds 已提交
3077
			pkt_dev->next_tx_ns = 0;
3078
			set_pkt_overhead(pkt_dev);
L
Luiz Capitulino 已提交
3079

L
Linus Torvalds 已提交
3080 3081
			strcpy(pkt_dev->result, "Starting");
			started++;
L
Luiz Capitulino 已提交
3082
		} else
L
Linus Torvalds 已提交
3083 3084 3085
			strcpy(pkt_dev->result, "Error starting");
	}
	if_unlock(t);
L
Luiz Capitulino 已提交
3086 3087
	if (started)
		t->control &= ~(T_STOP);
L
Linus Torvalds 已提交
3088 3089 3090 3091
}

static void pktgen_stop_all_threads_ifs(void)
{
3092
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
3093

S
Stephen Hemminger 已提交
3094
	pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
L
Linus Torvalds 已提交
3095

3096
	mutex_lock(&pktgen_thread_lock);
3097 3098

	list_for_each_entry(t, &pktgen_threads, th_list)
3099
		t->control |= T_STOP;
3100

3101
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3102 3103
}

L
Luiz Capitulino 已提交
3104
static int thread_is_running(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3105
{
3106
	struct pktgen_dev *pkt_dev;
L
Luiz Capitulino 已提交
3107
	int res = 0;
L
Linus Torvalds 已提交
3108

3109 3110
	list_for_each_entry(pkt_dev, &t->if_list, list)
		if (pkt_dev->running) {
L
Linus Torvalds 已提交
3111 3112 3113
			res = 1;
			break;
		}
L
Luiz Capitulino 已提交
3114
	return res;
L
Linus Torvalds 已提交
3115 3116
}

L
Luiz Capitulino 已提交
3117
static int pktgen_wait_thread_run(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3118
{
L
Luiz Capitulino 已提交
3119
	if_lock(t);
L
Linus Torvalds 已提交
3120

L
Luiz Capitulino 已提交
3121
	while (thread_is_running(t)) {
L
Linus Torvalds 已提交
3122

L
Luiz Capitulino 已提交
3123
		if_unlock(t);
L
Linus Torvalds 已提交
3124

L
Luiz Capitulino 已提交
3125
		msleep_interruptible(100);
L
Linus Torvalds 已提交
3126

L
Luiz Capitulino 已提交
3127 3128 3129 3130 3131 3132 3133 3134
		if (signal_pending(current))
			goto signal;
		if_lock(t);
	}
	if_unlock(t);
	return 1;
signal:
	return 0;
L
Linus Torvalds 已提交
3135 3136 3137 3138
}

static int pktgen_wait_all_threads_run(void)
{
3139
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
3140
	int sig = 1;
L
Luiz Capitulino 已提交
3141

3142
	mutex_lock(&pktgen_thread_lock);
3143 3144

	list_for_each_entry(t, &pktgen_threads, th_list) {
L
Linus Torvalds 已提交
3145
		sig = pktgen_wait_thread_run(t);
L
Luiz Capitulino 已提交
3146 3147
		if (sig == 0)
			break;
L
Linus Torvalds 已提交
3148
	}
3149 3150 3151

	if (sig == 0)
		list_for_each_entry(t, &pktgen_threads, th_list)
L
Linus Torvalds 已提交
3152
			t->control |= (T_STOP);
3153

3154
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3155 3156 3157 3158 3159
	return sig;
}

static void pktgen_run_all_threads(void)
{
3160
	struct pktgen_thread *t;
L
Linus Torvalds 已提交
3161

S
Stephen Hemminger 已提交
3162
	pr_debug("pktgen: entering pktgen_run_all_threads.\n");
L
Linus Torvalds 已提交
3163

3164
	mutex_lock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3165

3166
	list_for_each_entry(t, &pktgen_threads, th_list)
L
Linus Torvalds 已提交
3167
		t->control |= (T_RUN);
3168

3169
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3170

L
Luiz Capitulino 已提交
3171 3172
	schedule_timeout_interruptible(msecs_to_jiffies(125));	/* Propagate thread->control  */

L
Linus Torvalds 已提交
3173 3174 3175
	pktgen_wait_all_threads_run();
}

3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
static void pktgen_reset_all_threads(void)
{
	struct pktgen_thread *t;

	pr_debug("pktgen: entering pktgen_reset_all_threads.\n");

	mutex_lock(&pktgen_thread_lock);

	list_for_each_entry(t, &pktgen_threads, th_list)
		t->control |= (T_REMDEVALL);

	mutex_unlock(&pktgen_thread_lock);

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

	pktgen_wait_all_threads_run();
}

L
Linus Torvalds 已提交
3194 3195
static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
{
L
Luiz Capitulino 已提交
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227
	__u64 total_us, bps, mbps, pps, idle;
	char *p = pkt_dev->result;

	total_us = pkt_dev->stopped_at - pkt_dev->started_at;

	idle = pkt_dev->idle_acc;

	p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
		     (unsigned long long)total_us,
		     (unsigned long long)(total_us - idle),
		     (unsigned long long)idle,
		     (unsigned long long)pkt_dev->sofar,
		     pkt_dev->cur_pkt_size, nr_frags);

	pps = pkt_dev->sofar * USEC_PER_SEC;

	while ((total_us >> 32) != 0) {
		pps >>= 1;
		total_us >>= 1;
	}

	do_div(pps, total_us);

	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
3228 3229 3230 3231
}

/* Set stopped-at timer, remove from running list, do counters & statistics */

L
Luiz Capitulino 已提交
3232
static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3233
{
L
Luiz Capitulino 已提交
3234
	int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
3235

L
Luiz Capitulino 已提交
3236
	if (!pkt_dev->running) {
3237 3238
		printk(KERN_WARNING "pktgen: interface: %s is already "
		       "stopped\n", pkt_dev->odev->name);
L
Luiz Capitulino 已提交
3239 3240
		return -EINVAL;
	}
L
Linus Torvalds 已提交
3241

L
Luiz Capitulino 已提交
3242 3243
	pkt_dev->stopped_at = getCurUs();
	pkt_dev->running = 0;
L
Linus Torvalds 已提交
3244

3245
	show_results(pkt_dev, nr_frags);
L
Linus Torvalds 已提交
3246

L
Luiz Capitulino 已提交
3247
	return 0;
L
Linus Torvalds 已提交
3248 3249
}

L
Luiz Capitulino 已提交
3250
static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3251
{
3252
	struct pktgen_dev *pkt_dev, *best = NULL;
L
Luiz Capitulino 已提交
3253

L
Linus Torvalds 已提交
3254 3255
	if_lock(t);

3256 3257
	list_for_each_entry(pkt_dev, &t->if_list, list) {
		if (!pkt_dev->running)
L
Luiz Capitulino 已提交
3258 3259
			continue;
		if (best == NULL)
3260 3261 3262
			best = pkt_dev;
		else if (pkt_dev->next_tx_us < best->next_tx_us)
			best = pkt_dev;
L
Linus Torvalds 已提交
3263 3264
	}
	if_unlock(t);
L
Luiz Capitulino 已提交
3265
	return best;
L
Linus Torvalds 已提交
3266 3267
}

L
Luiz Capitulino 已提交
3268 3269
static void pktgen_stop(struct pktgen_thread *t)
{
3270
	struct pktgen_dev *pkt_dev;
L
Linus Torvalds 已提交
3271

S
Stephen Hemminger 已提交
3272
	pr_debug("pktgen: entering pktgen_stop\n");
L
Linus Torvalds 已提交
3273

L
Luiz Capitulino 已提交
3274
	if_lock(t);
L
Linus Torvalds 已提交
3275

3276 3277 3278 3279
	list_for_each_entry(pkt_dev, &t->if_list, list) {
		pktgen_stop_device(pkt_dev);
		if (pkt_dev->skb)
			kfree_skb(pkt_dev->skb);
3280

3281
		pkt_dev->skb = NULL;
3282
	}
L
Linus Torvalds 已提交
3283

L
Luiz Capitulino 已提交
3284
	if_unlock(t);
L
Linus Torvalds 已提交
3285 3286
}

3287 3288 3289 3290 3291 3292
/*
 * one of our devices needs to be removed - find it
 * and remove it
 */
static void pktgen_rem_one_if(struct pktgen_thread *t)
{
3293 3294
	struct list_head *q, *n;
	struct pktgen_dev *cur;
3295

S
Stephen Hemminger 已提交
3296
	pr_debug("pktgen: entering pktgen_rem_one_if\n");
3297 3298 3299

	if_lock(t);

3300 3301
	list_for_each_safe(q, n, &t->if_list) {
		cur = list_entry(q, struct pktgen_dev, list);
3302

L
Luiz Capitulino 已提交
3303 3304
		if (!cur->removal_mark)
			continue;
3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317

		if (cur->skb)
			kfree_skb(cur->skb);
		cur->skb = NULL;

		pktgen_remove_device(t, cur);

		break;
	}

	if_unlock(t);
}

L
Luiz Capitulino 已提交
3318
static void pktgen_rem_all_ifs(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3319
{
3320 3321
	struct list_head *q, *n;
	struct pktgen_dev *cur;
L
Luiz Capitulino 已提交
3322 3323

	/* Remove all devices, free mem */
3324

S
Stephen Hemminger 已提交
3325
	pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
L
Luiz Capitulino 已提交
3326
	if_lock(t);
L
Linus Torvalds 已提交
3327

3328 3329
	list_for_each_safe(q, n, &t->if_list) {
		cur = list_entry(q, struct pktgen_dev, list);
3330 3331 3332 3333 3334

		if (cur->skb)
			kfree_skb(cur->skb);
		cur->skb = NULL;

L
Linus Torvalds 已提交
3335 3336 3337
		pktgen_remove_device(t, cur);
	}

L
Luiz Capitulino 已提交
3338
	if_unlock(t);
L
Linus Torvalds 已提交
3339 3340
}

L
Luiz Capitulino 已提交
3341
static void pktgen_rem_thread(struct pktgen_thread *t)
L
Linus Torvalds 已提交
3342
{
L
Luiz Capitulino 已提交
3343
	/* Remove from the thread list */
L
Linus Torvalds 已提交
3344

3345
	remove_proc_entry(t->tsk->comm, pg_proc_dir);
L
Linus Torvalds 已提交
3346

3347
	mutex_lock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3348

3349 3350
	list_del(&t->th_list);

3351
	mutex_unlock(&pktgen_thread_lock);
L
Linus Torvalds 已提交
3352 3353 3354 3355
}

static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
{
3356 3357 3358
	struct net_device *odev = pkt_dev->odev;
	int (*xmit)(struct sk_buff *, struct net_device *)
		= odev->netdev_ops->ndo_start_xmit;
3359
	struct netdev_queue *txq;
L
Linus Torvalds 已提交
3360
	__u64 idle_start = 0;
3361
	u16 queue_map;
L
Linus Torvalds 已提交
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379
	int ret;

	if (pkt_dev->delay_us || pkt_dev->delay_ns) {
		u64 now;

		now = getCurUs();
		if (now < pkt_dev->next_tx_us)
			spin(pkt_dev, pkt_dev->next_tx_us);

		/* This is max DELAY, this has special meaning of
		 * "never transmit"
		 */
		if (pkt_dev->delay_us == 0x7FFFFFFF) {
			pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us;
			pkt_dev->next_tx_ns = pkt_dev->delay_ns;
			goto out;
		}
	}
L
Luiz Capitulino 已提交
3380

3381 3382 3383 3384 3385 3386 3387 3388 3389
	if (!pkt_dev->skb) {
		set_cur_queue_map(pkt_dev);
		queue_map = pkt_dev->cur_queue_map;
	} else {
		queue_map = skb_get_queue_mapping(pkt_dev->skb);
	}

	txq = netdev_get_tx_queue(odev, queue_map);
	if (netif_tx_queue_stopped(txq) ||
3390
	    netif_tx_queue_frozen(txq) ||
R
Robert Olsson 已提交
3391
	    need_resched()) {
L
Linus Torvalds 已提交
3392
		idle_start = getCurUs();
L
Luiz Capitulino 已提交
3393

L
Linus Torvalds 已提交
3394 3395
		if (!netif_running(odev)) {
			pktgen_stop_device(pkt_dev);
3396 3397 3398
			if (pkt_dev->skb)
				kfree_skb(pkt_dev->skb);
			pkt_dev->skb = NULL;
L
Linus Torvalds 已提交
3399 3400
			goto out;
		}
L
Luiz Capitulino 已提交
3401
		if (need_resched())
L
Linus Torvalds 已提交
3402
			schedule();
L
Luiz Capitulino 已提交
3403

L
Linus Torvalds 已提交
3404
		pkt_dev->idle_acc += getCurUs() - idle_start;
L
Luiz Capitulino 已提交
3405

3406 3407
		if (netif_tx_queue_stopped(txq) ||
		    netif_tx_queue_frozen(txq)) {
L
Luiz Capitulino 已提交
3408
			pkt_dev->next_tx_us = getCurUs();	/* TODO */
L
Linus Torvalds 已提交
3409
			pkt_dev->next_tx_ns = 0;
L
Luiz Capitulino 已提交
3410
			goto out;	/* Try the next interface */
L
Linus Torvalds 已提交
3411 3412
		}
	}
L
Luiz Capitulino 已提交
3413

L
Linus Torvalds 已提交
3414
	if (pkt_dev->last_ok || !pkt_dev->skb) {
L
Luiz Capitulino 已提交
3415 3416
		if ((++pkt_dev->clone_count >= pkt_dev->clone_skb)
		    || (!pkt_dev->skb)) {
L
Linus Torvalds 已提交
3417
			/* build a new pkt */
L
Luiz Capitulino 已提交
3418
			if (pkt_dev->skb)
L
Linus Torvalds 已提交
3419
				kfree_skb(pkt_dev->skb);
L
Luiz Capitulino 已提交
3420

L
Linus Torvalds 已提交
3421 3422
			pkt_dev->skb = fill_packet(odev, pkt_dev);
			if (pkt_dev->skb == NULL) {
3423 3424
				printk(KERN_ERR "pktgen: ERROR: couldn't "
				       "allocate skb in fill_packet.\n");
L
Linus Torvalds 已提交
3425
				schedule();
L
Luiz Capitulino 已提交
3426
				pkt_dev->clone_count--;	/* back out increment, OOM */
L
Linus Torvalds 已提交
3427 3428 3429
				goto out;
			}
			pkt_dev->allocated_skbs++;
L
Luiz Capitulino 已提交
3430
			pkt_dev->clone_count = 0;	/* reset counter */
L
Linus Torvalds 已提交
3431 3432
		}
	}
3433

3434 3435 3436 3437 3438
	/* fill_packet() might have changed the queue */
	queue_map = skb_get_queue_mapping(pkt_dev->skb);
	txq = netdev_get_tx_queue(odev, queue_map);

	__netif_tx_lock_bh(txq);
3439 3440
	if (!netif_tx_queue_stopped(txq) &&
	    !netif_tx_queue_frozen(txq)) {
L
Linus Torvalds 已提交
3441 3442

		atomic_inc(&(pkt_dev->skb->users));
L
Luiz Capitulino 已提交
3443
	      retry_now:
3444
		ret = (*xmit)(pkt_dev->skb, odev);
L
Linus Torvalds 已提交
3445
		if (likely(ret == NETDEV_TX_OK)) {
L
Luiz Capitulino 已提交
3446
			pkt_dev->last_ok = 1;
L
Linus Torvalds 已提交
3447 3448 3449
			pkt_dev->sofar++;
			pkt_dev->seq_num++;
			pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
L
Luiz Capitulino 已提交
3450 3451

		} else if (ret == NETDEV_TX_LOCKED
L
Linus Torvalds 已提交
3452 3453 3454
			   && (odev->features & NETIF_F_LLTX)) {
			cpu_relax();
			goto retry_now;
L
Luiz Capitulino 已提交
3455 3456
		} else {	/* Retry it next time */

L
Linus Torvalds 已提交
3457
			atomic_dec(&(pkt_dev->skb->users));
L
Luiz Capitulino 已提交
3458

L
Linus Torvalds 已提交
3459 3460
			if (debug && net_ratelimit())
				printk(KERN_INFO "pktgen: Hard xmit error\n");
L
Luiz Capitulino 已提交
3461

L
Linus Torvalds 已提交
3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475
			pkt_dev->errors++;
			pkt_dev->last_ok = 0;
		}

		pkt_dev->next_tx_us = getCurUs();
		pkt_dev->next_tx_ns = 0;

		pkt_dev->next_tx_us += pkt_dev->delay_us;
		pkt_dev->next_tx_ns += pkt_dev->delay_ns;

		if (pkt_dev->next_tx_ns > 1000) {
			pkt_dev->next_tx_us++;
			pkt_dev->next_tx_ns -= 1000;
		}
L
Luiz Capitulino 已提交
3476
	}
L
Linus Torvalds 已提交
3477

L
Luiz Capitulino 已提交
3478 3479 3480
	else {			/* Retry it next time */
		pkt_dev->last_ok = 0;
		pkt_dev->next_tx_us = getCurUs();	/* TODO */
L
Linus Torvalds 已提交
3481
		pkt_dev->next_tx_ns = 0;
L
Luiz Capitulino 已提交
3482
	}
L
Linus Torvalds 已提交
3483

3484
	__netif_tx_unlock_bh(txq);
L
Luiz Capitulino 已提交
3485

L
Linus Torvalds 已提交
3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497
	/* If pkt_dev->count is zero, then run forever */
	if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
		if (atomic_read(&(pkt_dev->skb->users)) != 1) {
			idle_start = getCurUs();
			while (atomic_read(&(pkt_dev->skb->users)) != 1) {
				if (signal_pending(current)) {
					break;
				}
				schedule();
			}
			pkt_dev->idle_acc += getCurUs() - idle_start;
		}
L
Luiz Capitulino 已提交
3498

L
Linus Torvalds 已提交
3499 3500
		/* Done with this */
		pktgen_stop_device(pkt_dev);
3501 3502 3503
		if (pkt_dev->skb)
			kfree_skb(pkt_dev->skb);
		pkt_dev->skb = NULL;
L
Luiz Capitulino 已提交
3504 3505 3506
	}
out:;
}
L
Linus Torvalds 已提交
3507

3508
/*
L
Linus Torvalds 已提交
3509 3510 3511
 * Main loop of the thread goes here
 */

3512
static int pktgen_thread_worker(void *arg)
L
Linus Torvalds 已提交
3513 3514
{
	DEFINE_WAIT(wait);
3515
	struct pktgen_thread *t = arg;
L
Luiz Capitulino 已提交
3516
	struct pktgen_dev *pkt_dev = NULL;
L
Linus Torvalds 已提交
3517 3518
	int cpu = t->cpu;

3519
	BUG_ON(smp_processor_id() != cpu);
L
Linus Torvalds 已提交
3520 3521

	init_waitqueue_head(&t->queue);
3522
	complete(&t->start_done);
L
Linus Torvalds 已提交
3523

3524
	pr_debug("pktgen: starting pktgen/%d:  pid=%d\n", cpu, task_pid_nr(current));
L
Linus Torvalds 已提交
3525

3526
	set_current_state(TASK_INTERRUPTIBLE);
L
Luiz Capitulino 已提交
3527

3528 3529
	set_freezable();

3530 3531
	while (!kthread_should_stop()) {
		pkt_dev = next_to_run(t);
L
Linus Torvalds 已提交
3532

3533 3534 3535 3536 3537 3538 3539 3540
		if (!pkt_dev &&
		    (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
		    == 0) {
			prepare_to_wait(&(t->queue), &wait,
					TASK_INTERRUPTIBLE);
			schedule_timeout(HZ / 10);
			finish_wait(&(t->queue), &wait);
		}
L
Linus Torvalds 已提交
3541

3542
		__set_current_state(TASK_RUNNING);
L
Luiz Capitulino 已提交
3543

3544
		if (pkt_dev)
L
Linus Torvalds 已提交
3545 3546
			pktgen_xmit(pkt_dev);

L
Luiz Capitulino 已提交
3547
		if (t->control & T_STOP) {
L
Linus Torvalds 已提交
3548 3549 3550 3551
			pktgen_stop(t);
			t->control &= ~(T_STOP);
		}

L
Luiz Capitulino 已提交
3552
		if (t->control & T_RUN) {
L
Linus Torvalds 已提交
3553 3554 3555 3556
			pktgen_run(t);
			t->control &= ~(T_RUN);
		}

L
Luiz Capitulino 已提交
3557
		if (t->control & T_REMDEVALL) {
L
Linus Torvalds 已提交
3558
			pktgen_rem_all_ifs(t);
3559 3560 3561
			t->control &= ~(T_REMDEVALL);
		}

L
Luiz Capitulino 已提交
3562
		if (t->control & T_REMDEV) {
3563
			pktgen_rem_one_if(t);
L
Linus Torvalds 已提交
3564 3565 3566
			t->control &= ~(T_REMDEV);
		}

A
Andrew Morton 已提交
3567 3568
		try_to_freeze();

3569
		set_current_state(TASK_INTERRUPTIBLE);
L
Luiz Capitulino 已提交
3570
	}
L
Linus Torvalds 已提交
3571

S
Stephen Hemminger 已提交
3572
	pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3573
	pktgen_stop(t);
L
Linus Torvalds 已提交
3574

S
Stephen Hemminger 已提交
3575
	pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3576
	pktgen_rem_all_ifs(t);
L
Linus Torvalds 已提交
3577

S
Stephen Hemminger 已提交
3578
	pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
L
Luiz Capitulino 已提交
3579
	pktgen_rem_thread(t);
3580

3581
	return 0;
L
Linus Torvalds 已提交
3582 3583
}

L
Luiz Capitulino 已提交
3584 3585
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
					  const char *ifname)
L
Linus Torvalds 已提交
3586
{
3587
	struct pktgen_dev *p, *pkt_dev = NULL;
L
Luiz Capitulino 已提交
3588 3589
	if_lock(t);

3590
	list_for_each_entry(p, &t->if_list, list)
3591
		if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
3592
			pkt_dev = p;
L
Luiz Capitulino 已提交
3593 3594 3595 3596
			break;
		}

	if_unlock(t);
S
Stephen Hemminger 已提交
3597
	pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
L
Luiz Capitulino 已提交
3598
	return pkt_dev;
L
Linus Torvalds 已提交
3599 3600
}

3601 3602
/*
 * Adds a dev at front of if_list.
L
Linus Torvalds 已提交
3603 3604
 */

L
Luiz Capitulino 已提交
3605 3606
static int add_dev_to_thread(struct pktgen_thread *t,
			     struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3607 3608
{
	int rv = 0;
L
Luiz Capitulino 已提交
3609 3610 3611 3612

	if_lock(t);

	if (pkt_dev->pg_thread) {
3613 3614
		printk(KERN_ERR "pktgen: ERROR: already assigned "
		       "to a thread.\n");
L
Luiz Capitulino 已提交
3615 3616 3617
		rv = -EBUSY;
		goto out;
	}
3618 3619

	list_add(&pkt_dev->list, &t->if_list);
L
Luiz Capitulino 已提交
3620
	pkt_dev->pg_thread = t;
L
Linus Torvalds 已提交
3621 3622
	pkt_dev->running = 0;

L
Luiz Capitulino 已提交
3623 3624 3625
out:
	if_unlock(t);
	return rv;
L
Linus Torvalds 已提交
3626 3627 3628 3629
}

/* Called under thread lock */

L
Luiz Capitulino 已提交
3630
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
L
Linus Torvalds 已提交
3631
{
L
Luiz Capitulino 已提交
3632
	struct pktgen_dev *pkt_dev;
3633
	int err;
L
Luiz Capitulino 已提交
3634

L
Linus Torvalds 已提交
3635 3636
	/* We don't allow a device to be on several threads */

3637 3638
	pkt_dev = __pktgen_NN_threads(ifname, FIND);
	if (pkt_dev) {
3639
		printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
L
Luiz Capitulino 已提交
3640 3641
		return -EBUSY;
	}
3642 3643 3644 3645 3646

	pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
	if (!pkt_dev)
		return -ENOMEM;

L
Luiz Capitulino 已提交
3647
	pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
3648 3649 3650 3651
	if (pkt_dev->flows == NULL) {
		kfree(pkt_dev);
		return -ENOMEM;
	}
L
Luiz Capitulino 已提交
3652
	memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
3653

3654
	pkt_dev->removal_mark = 0;
3655 3656 3657 3658 3659 3660 3661 3662
	pkt_dev->min_pkt_size = ETH_ZLEN;
	pkt_dev->max_pkt_size = ETH_ZLEN;
	pkt_dev->nfrags = 0;
	pkt_dev->clone_skb = pg_clone_skb_d;
	pkt_dev->delay_us = pg_delay_d / 1000;
	pkt_dev->delay_ns = pg_delay_d % 1000;
	pkt_dev->count = pg_count_d;
	pkt_dev->sofar = 0;
L
Luiz Capitulino 已提交
3663
	pkt_dev->udp_src_min = 9;	/* sink port */
3664 3665 3666 3667
	pkt_dev->udp_src_max = 9;
	pkt_dev->udp_dst_min = 9;
	pkt_dev->udp_dst_max = 9;

F
Francesco Fondelli 已提交
3668 3669 3670 3671 3672 3673 3674
	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;

3675 3676 3677
	err = pktgen_setup_dev(pkt_dev, ifname);
	if (err)
		goto out1;
3678

3679 3680
	pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
					  &pktgen_if_fops, pkt_dev);
3681
	if (!pkt_dev->entry) {
3682
		printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
3683
		       PG_PROC_DIR, ifname);
3684 3685
		err = -EINVAL;
		goto out2;
3686
	}
J
Jamal Hadi Salim 已提交
3687 3688 3689 3690
#ifdef CONFIG_XFRM
	pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
	pkt_dev->ipsproto = IPPROTO_ESP;
#endif
3691 3692

	return add_dev_to_thread(t, pkt_dev);
3693 3694 3695
out2:
	dev_put(pkt_dev->odev);
out1:
J
Jamal Hadi Salim 已提交
3696 3697 3698
#ifdef CONFIG_XFRM
	free_SAs(pkt_dev);
#endif
3699 3700 3701 3702
	if (pkt_dev->flows)
		vfree(pkt_dev->flows);
	kfree(pkt_dev);
	return err;
L
Linus Torvalds 已提交
3703 3704
}

3705
static int __init pktgen_create_thread(int cpu)
L
Linus Torvalds 已提交
3706
{
3707
	struct pktgen_thread *t;
3708
	struct proc_dir_entry *pe;
3709
	struct task_struct *p;
L
Luiz Capitulino 已提交
3710 3711 3712

	t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
	if (!t) {
3713 3714
		printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
		       "create new thread.\n");
L
Luiz Capitulino 已提交
3715 3716 3717 3718
		return -ENOMEM;
	}

	spin_lock_init(&t->if_lock);
L
Linus Torvalds 已提交
3719
	t->cpu = cpu;
L
Luiz Capitulino 已提交
3720

3721 3722 3723
	INIT_LIST_HEAD(&t->if_list);

	list_add_tail(&t->th_list, &pktgen_threads);
3724
	init_completion(&t->start_done);
3725 3726 3727

	p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
	if (IS_ERR(p)) {
3728 3729
		printk(KERN_ERR "pktgen: kernel_thread() failed "
		       "for cpu %d\n", t->cpu);
3730 3731 3732 3733 3734 3735 3736
		list_del(&t->th_list);
		kfree(t);
		return PTR_ERR(p);
	}
	kthread_bind(p, cpu);
	t->tsk = p;

3737 3738
	pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
			      &pktgen_thread_fops, t);
L
Luiz Capitulino 已提交
3739
	if (!pe) {
3740
		printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
3741 3742 3743
		       PG_PROC_DIR, t->tsk->comm);
		kthread_stop(p);
		list_del(&t->th_list);
L
Luiz Capitulino 已提交
3744 3745 3746
		kfree(t);
		return -EINVAL;
	}
3747

3748
	wake_up_process(p);
3749
	wait_for_completion(&t->start_done);
L
Linus Torvalds 已提交
3750 3751 3752 3753

	return 0;
}

3754 3755
/*
 * Removes a device from the thread if_list.
L
Linus Torvalds 已提交
3756
 */
L
Luiz Capitulino 已提交
3757 3758
static void _rem_dev_from_if_list(struct pktgen_thread *t,
				  struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3759
{
3760 3761
	struct list_head *q, *n;
	struct pktgen_dev *p;
L
Linus Torvalds 已提交
3762

3763 3764 3765 3766
	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
3767 3768 3769
	}
}

L
Luiz Capitulino 已提交
3770 3771
static int pktgen_remove_device(struct pktgen_thread *t,
				struct pktgen_dev *pkt_dev)
L
Linus Torvalds 已提交
3772 3773
{

S
Stephen Hemminger 已提交
3774
	pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
L
Linus Torvalds 已提交
3775

L
Luiz Capitulino 已提交
3776
	if (pkt_dev->running) {
3777 3778
		printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
		       "running interface, stopping it now.\n");
L
Luiz Capitulino 已提交
3779 3780 3781 3782
		pktgen_stop_device(pkt_dev);
	}

	/* Dis-associate from the interface */
L
Linus Torvalds 已提交
3783 3784 3785

	if (pkt_dev->odev) {
		dev_put(pkt_dev->odev);
L
Luiz Capitulino 已提交
3786 3787 3788
		pkt_dev->odev = NULL;
	}

L
Linus Torvalds 已提交
3789 3790 3791 3792
	/* And update the thread if_list */

	_rem_dev_from_if_list(t, pkt_dev);

3793 3794
	if (pkt_dev->entry)
		remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
L
Linus Torvalds 已提交
3795

J
Jamal Hadi Salim 已提交
3796 3797 3798
#ifdef CONFIG_XFRM
	free_SAs(pkt_dev);
#endif
L
Linus Torvalds 已提交
3799 3800 3801
	if (pkt_dev->flows)
		vfree(pkt_dev->flows);
	kfree(pkt_dev);
L
Luiz Capitulino 已提交
3802
	return 0;
L
Linus Torvalds 已提交
3803 3804
}

L
Luiz Capitulino 已提交
3805
static int __init pg_init(void)
L
Linus Torvalds 已提交
3806 3807
{
	int cpu;
3808
	struct proc_dir_entry *pe;
L
Linus Torvalds 已提交
3809

3810
	printk(KERN_INFO "%s", version);
L
Linus Torvalds 已提交
3811

3812
	pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
3813 3814 3815
	if (!pg_proc_dir)
		return -ENODEV;
	pg_proc_dir->owner = THIS_MODULE;
L
Linus Torvalds 已提交
3816

3817
	pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
L
Luiz Capitulino 已提交
3818
	if (pe == NULL) {
3819 3820
		printk(KERN_ERR "pktgen: ERROR: cannot create %s "
		       "procfs entry.\n", PGCTRL);
3821
		proc_net_remove(&init_net, PG_PROC_DIR);
L
Luiz Capitulino 已提交
3822 3823
		return -EINVAL;
	}
L
Linus Torvalds 已提交
3824 3825 3826

	/* Register us to receive netdevice events */
	register_netdevice_notifier(&pktgen_notifier_block);
L
Luiz Capitulino 已提交
3827

J
John Hawkes 已提交
3828
	for_each_online_cpu(cpu) {
3829
		int err;
L
Linus Torvalds 已提交
3830

3831
		err = pktgen_create_thread(cpu);
3832
		if (err)
3833 3834
			printk(KERN_WARNING "pktgen: WARNING: Cannot create "
			       "thread for cpu %d (%d)\n", cpu, err);
L
Luiz Capitulino 已提交
3835
	}
3836 3837

	if (list_empty(&pktgen_threads)) {
3838 3839
		printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
		       "all threads\n");
3840 3841
		unregister_netdevice_notifier(&pktgen_notifier_block);
		remove_proc_entry(PGCTRL, pg_proc_dir);
3842
		proc_net_remove(&init_net, PG_PROC_DIR);
3843 3844 3845
		return -ENODEV;
	}

L
Luiz Capitulino 已提交
3846
	return 0;
L
Linus Torvalds 已提交
3847 3848 3849 3850
}

static void __exit pg_cleanup(void)
{
3851 3852
	struct pktgen_thread *t;
	struct list_head *q, *n;
L
Linus Torvalds 已提交
3853 3854 3855
	wait_queue_head_t queue;
	init_waitqueue_head(&queue);

L
Luiz Capitulino 已提交
3856
	/* Stop all interfaces & threads */
L
Linus Torvalds 已提交
3857

3858 3859
	list_for_each_safe(q, n, &pktgen_threads) {
		t = list_entry(q, struct pktgen_thread, th_list);
3860 3861
		kthread_stop(t->tsk);
		kfree(t);
L
Luiz Capitulino 已提交
3862
	}
L
Linus Torvalds 已提交
3863

L
Luiz Capitulino 已提交
3864
	/* Un-register us from receiving netdevice events */
L
Linus Torvalds 已提交
3865 3866
	unregister_netdevice_notifier(&pktgen_notifier_block);

L
Luiz Capitulino 已提交
3867
	/* Clean up proc file system */
3868
	remove_proc_entry(PGCTRL, pg_proc_dir);
3869
	proc_net_remove(&init_net, PG_PROC_DIR);
L
Linus Torvalds 已提交
3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881
}

module_init(pg_init);
module_exit(pg_cleanup);

MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
MODULE_DESCRIPTION("Packet Generator tool");
MODULE_LICENSE("GPL");
module_param(pg_count_d, int, 0);
module_param(pg_delay_d, int, 0);
module_param(pg_clone_skb_d, int, 0);
module_param(debug, int, 0);