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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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82fd5b5d1e
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
3940 lines
94 KiB
C
3940 lines
94 KiB
C
/*
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* Authors:
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* Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
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* Uppsala University and
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* Swedish University of Agricultural Sciences
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*
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* Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
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* Ben Greear <greearb@candelatech.com>
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* Jens Låås <jens.laas@data.slu.se>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*
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* 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
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* to use multiple SKBs or just the same one.
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* pktgen uses the installed interface's output routine.
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*
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* Additional hacking by:
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*
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* Jens.Laas@data.slu.se
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* Improved by ANK. 010120.
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* Improved by ANK even more. 010212.
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* MAC address typo fixed. 010417 --ro
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* Integrated. 020301 --DaveM
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* Added multiskb option 020301 --DaveM
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* Scaling of results. 020417--sigurdur@linpro.no
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* Significant re-work of the module:
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* * Convert to threaded model to more efficiently be able to transmit
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* and receive on multiple interfaces at once.
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* * Converted many counters to __u64 to allow longer runs.
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* * Allow configuration of ranges, like min/max IP address, MACs,
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* and UDP-ports, for both source and destination, and can
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* set to use a random distribution or sequentially walk the range.
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* * Can now change most values after starting.
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* * Place 12-byte packet in UDP payload with magic number,
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* sequence number, and timestamp.
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* * Add receiver code that detects dropped pkts, re-ordered pkts, and
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* latencies (with micro-second) precision.
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* * Add IOCTL interface to easily get counters & configuration.
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* --Ben Greear <greearb@candelatech.com>
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*
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* Renamed multiskb to clone_skb and cleaned up sending core for two distinct
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* 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
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* stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
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* clones.
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*
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* Also moved to /proc/net/pktgen/
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* --ro
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*
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* Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
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* mistakes. Also merged in DaveM's patch in the -pre6 patch.
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* --Ben Greear <greearb@candelatech.com>
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*
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* Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
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*
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*
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* 021124 Finished major redesign and rewrite for new functionality.
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* See Documentation/networking/pktgen.txt for how to use this.
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*
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* The new operation:
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* For each CPU one thread/process is created at start. This process checks
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* for running devices in the if_list and sends packets until count is 0 it
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* also the thread checks the thread->control which is used for inter-process
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* 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
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* into this too.
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*
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* By design there should only be *one* "controlling" process. In practice
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* 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
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* /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
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* --ro
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*
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* Fix refcount off by one if first packet fails, potential null deref,
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* memleak 030710- KJP
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*
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* First "ranges" functionality for ipv6 030726 --ro
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*
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* Included flow support. 030802 ANK.
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*
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* 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
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* ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
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*
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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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*
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* Randy Dunlap fixed u64 printk compiler waring
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*
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* Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
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* New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
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*
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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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*
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* interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
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* 050103
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*
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* MPLS support by Steven Whitehouse <steve@chygwyn.com>
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*
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* 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
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*
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* Fixed src_mac command to set source mac of packet to value specified in
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* command by Adit Ranadive <adit.262@gmail.com>
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/sys.h>
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/unistd.h>
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#include <linux/string.h>
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#include <linux/ptrace.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/capability.h>
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#include <linux/hrtimer.h>
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#include <linux/freezer.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/list.h>
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#include <linux/init.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/inet.h>
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#include <linux/inetdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/if_arp.h>
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#include <linux/if_vlan.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/udp.h>
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#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>
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#include <net/ipv6.h>
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#include <net/addrconf.h>
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#ifdef CONFIG_XFRM
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#include <net/xfrm.h>
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#endif
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#include <asm/byteorder.h>
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#include <linux/rcupdate.h>
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#include <linux/bitops.h>
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#include <linux/io.h>
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#include <linux/timex.h>
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#include <linux/uaccess.h>
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#include <asm/dma.h>
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#include <asm/div64.h> /* do_div */
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#define VERSION "2.74"
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#define IP_NAME_SZ 32
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#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
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#define MPLS_STACK_BOTTOM htonl(0x00000100)
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#define func_enter() pr_debug("entering %s\n", __func__);
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/* Device flag bits */
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#define F_IPSRC_RND (1<<0) /* IP-Src Random */
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#define F_IPDST_RND (1<<1) /* IP-Dst Random */
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#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
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#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
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#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
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#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
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#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
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#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 */
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#define F_SVID_RND (1<<10) /* Random SVLAN ID */
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#define F_FLOW_SEQ (1<<11) /* Sequential flows */
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#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
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#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
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#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
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#define F_NODE (1<<15) /* Node memory alloc*/
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/* Thread control flag bits */
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#define T_STOP (1<<0) /* Stop run */
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#define T_RUN (1<<1) /* Start run */
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#define T_REMDEVALL (1<<2) /* Remove all devs */
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#define T_REMDEV (1<<3) /* Remove one dev */
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/* If lock -- can be removed after some work */
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#define if_lock(t) spin_lock(&(t->if_lock));
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#define if_unlock(t) spin_unlock(&(t->if_lock));
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/* Used to help with determining the pkts on receive */
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#define PKTGEN_MAGIC 0xbe9be955
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#define PG_PROC_DIR "pktgen"
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#define PGCTRL "pgctrl"
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static struct proc_dir_entry *pg_proc_dir;
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#define MAX_CFLOWS 65536
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#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
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#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
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struct xfrm_state *x;
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#endif
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__u32 flags;
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};
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/* flow flag bits */
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#define F_INIT (1<<0) /* flow has been initialized */
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struct pktgen_dev {
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/*
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* Try to keep frequent/infrequent used vars. separated.
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*/
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struct proc_dir_entry *entry; /* proc file */
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struct pktgen_thread *pg_thread;/* the owner */
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struct list_head list; /* chaining in the thread's run-queue */
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int running; /* if false, the test will stop */
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/* If min != max, then we will either do a linear iteration, or
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* we will do a random selection from within the range.
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*/
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__u32 flags;
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int removal_mark; /* non-zero => the device is marked for
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* removal by worker thread */
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int min_pkt_size; /* = ETH_ZLEN; */
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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;
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u64 delay; /* nano-seconds */
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__u64 count; /* Default No packets to send */
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__u64 sofar; /* How many pkts we've sent so far */
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__u64 tx_bytes; /* How many bytes we've transmitted */
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__u64 errors; /* Errors when trying to transmit, */
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/* runtime counters relating to clone_skb */
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__u64 allocated_skbs;
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__u32 clone_count;
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int last_ok; /* Was last skb sent?
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* Or a failed transmit of some sort?
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* This will keep sequence numbers in order
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*/
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ktime_t next_tx;
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ktime_t started_at;
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ktime_t stopped_at;
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u64 idle_acc; /* nano-seconds */
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__u32 seq_num;
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int clone_skb; /*
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* Use multiple SKBs during packet gen.
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* If this number is greater than 1, then
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* that many copies of the same packet will be
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* sent before a new packet is allocated.
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* If you want to send 1024 identical packets
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* before creating a new packet,
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* set clone_skb to 1024.
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*/
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char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
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char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
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char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
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char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
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struct in6_addr in6_saddr;
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struct in6_addr in6_daddr;
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struct in6_addr cur_in6_daddr;
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struct in6_addr cur_in6_saddr;
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/* For ranges */
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struct in6_addr min_in6_daddr;
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struct in6_addr max_in6_daddr;
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struct in6_addr min_in6_saddr;
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struct in6_addr max_in6_saddr;
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/* If we're doing ranges, random or incremental, then this
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* defines the min/max for those ranges.
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*/
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__be32 saddr_min; /* inclusive, source IP address */
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__be32 saddr_max; /* exclusive, source IP address */
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__be32 daddr_min; /* inclusive, dest IP address */
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__be32 daddr_max; /* exclusive, dest IP address */
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__u16 udp_src_min; /* inclusive, source UDP port */
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__u16 udp_src_max; /* exclusive, source UDP port */
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__u16 udp_dst_min; /* inclusive, dest UDP port */
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__u16 udp_dst_max; /* exclusive, dest UDP port */
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/* DSCP + ECN */
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__u8 tos; /* six MSB of (former) IPv4 TOS
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are for dscp codepoint */
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__u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
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(see RFC 3260, sec. 4) */
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/* MPLS */
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unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
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__be32 labels[MAX_MPLS_LABELS];
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/* VLAN/SVLAN (802.1Q/Q-in-Q) */
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__u8 vlan_p;
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__u8 vlan_cfi;
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__u16 vlan_id; /* 0xffff means no vlan tag */
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__u8 svlan_p;
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__u8 svlan_cfi;
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__u16 svlan_id; /* 0xffff means no svlan tag */
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__u32 src_mac_count; /* How many MACs to iterate through */
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__u32 dst_mac_count; /* How many MACs to iterate through */
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unsigned char dst_mac[ETH_ALEN];
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unsigned char src_mac[ETH_ALEN];
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__u32 cur_dst_mac_offset;
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__u32 cur_src_mac_offset;
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__be32 cur_saddr;
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__be32 cur_daddr;
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__u16 ip_id;
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__u16 cur_udp_dst;
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__u16 cur_udp_src;
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__u16 cur_queue_map;
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__u32 cur_pkt_size;
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__u32 last_pkt_size;
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__u8 hh[14];
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/* = {
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0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
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We fill in SRC address later
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x08, 0x00
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};
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*/
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__u16 pad; /* pad out the hh struct to an even 16 bytes */
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struct sk_buff *skb; /* skb we are to transmit next, used for when we
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* are transmitting the same one multiple times
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*/
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struct net_device *odev; /* The out-going device.
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* Note that the device should have it's
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* pg_info pointer pointing back to this
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* device.
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* Set when the user specifies the out-going
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* device name (not when the inject is
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* started as it used to do.)
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*/
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char odevname[32];
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struct flow_state *flows;
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unsigned cflows; /* Concurrent flows (config) */
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unsigned lflow; /* Flow length (config) */
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unsigned nflows; /* accumulated flows (stats) */
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unsigned curfl; /* current sequenced flow (state)*/
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u16 queue_map_min;
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u16 queue_map_max;
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int node; /* Memory node */
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#ifdef CONFIG_XFRM
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__u8 ipsmode; /* IPSEC mode (config) */
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__u8 ipsproto; /* IPSEC type (config) */
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#endif
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char result[512];
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};
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struct pktgen_hdr {
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__be32 pgh_magic;
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__be32 seq_num;
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__be32 tv_sec;
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__be32 tv_usec;
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};
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struct pktgen_thread {
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spinlock_t if_lock; /* for list of devices */
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struct list_head if_list; /* All device here */
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struct list_head th_list;
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struct task_struct *tsk;
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char result[512];
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/* Field for thread to receive "posted" events terminate,
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stop ifs etc. */
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u32 control;
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int cpu;
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wait_queue_head_t queue;
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struct completion start_done;
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};
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#define REMOVE 1
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#define FIND 0
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static inline ktime_t ktime_now(void)
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{
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struct timespec ts;
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ktime_get_ts(&ts);
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return timespec_to_ktime(ts);
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}
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/* This works even if 32 bit because of careful byte order choice */
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static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
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{
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return cmp1.tv64 < cmp2.tv64;
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}
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static const char version[] =
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"Packet Generator for packet performance testing. "
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"Version: " VERSION "\n";
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static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
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static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
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static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
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const char *ifname, bool exact);
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static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
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static void pktgen_run_all_threads(void);
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static void pktgen_reset_all_threads(void);
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static void pktgen_stop_all_threads_ifs(void);
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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]);
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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 __read_mostly = 1000;
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static int pg_delay_d __read_mostly;
|
|
static int pg_clone_skb_d __read_mostly;
|
|
static int debug __read_mostly;
|
|
|
|
static DEFINE_MUTEX(pktgen_thread_lock);
|
|
static LIST_HEAD(pktgen_threads);
|
|
|
|
static struct notifier_block pktgen_notifier_block = {
|
|
.notifier_call = pktgen_device_event,
|
|
};
|
|
|
|
/*
|
|
* /proc handling functions
|
|
*
|
|
*/
|
|
|
|
static int pgctrl_show(struct seq_file *seq, void *v)
|
|
{
|
|
seq_puts(seq, version);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t pgctrl_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
int err = 0;
|
|
char data[128];
|
|
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
err = -EPERM;
|
|
goto out;
|
|
}
|
|
|
|
if (count > sizeof(data))
|
|
count = sizeof(data);
|
|
|
|
if (copy_from_user(data, buf, count)) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
data[count - 1] = 0; /* Make string */
|
|
|
|
if (!strcmp(data, "stop"))
|
|
pktgen_stop_all_threads_ifs();
|
|
|
|
else if (!strcmp(data, "start"))
|
|
pktgen_run_all_threads();
|
|
|
|
else if (!strcmp(data, "reset"))
|
|
pktgen_reset_all_threads();
|
|
|
|
else
|
|
pr_warning("Unknown command: %s\n", data);
|
|
|
|
err = count;
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int pgctrl_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, pgctrl_show, PDE(inode)->data);
|
|
}
|
|
|
|
static const struct file_operations pktgen_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = pgctrl_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = pgctrl_write,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int pktgen_if_show(struct seq_file *seq, void *v)
|
|
{
|
|
const struct pktgen_dev *pkt_dev = seq->private;
|
|
ktime_t stopped;
|
|
u64 idle;
|
|
|
|
seq_printf(seq,
|
|
"Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
|
|
(unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
|
|
pkt_dev->max_pkt_size);
|
|
|
|
seq_printf(seq,
|
|
" frags: %d delay: %llu clone_skb: %d ifname: %s\n",
|
|
pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
|
|
pkt_dev->clone_skb, pkt_dev->odevname);
|
|
|
|
seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
|
|
pkt_dev->lflow);
|
|
|
|
seq_printf(seq,
|
|
" queue_map_min: %u queue_map_max: %u\n",
|
|
pkt_dev->queue_map_min,
|
|
pkt_dev->queue_map_max);
|
|
|
|
if (pkt_dev->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",
|
|
pkt_dev->dst_min, pkt_dev->dst_max);
|
|
seq_printf(seq,
|
|
" src_min: %s src_max: %s\n",
|
|
pkt_dev->src_min, pkt_dev->src_max);
|
|
}
|
|
|
|
seq_puts(seq, " src_mac: ");
|
|
|
|
seq_printf(seq, "%pM ",
|
|
is_zero_ether_addr(pkt_dev->src_mac) ?
|
|
pkt_dev->odev->dev_addr : pkt_dev->src_mac);
|
|
|
|
seq_printf(seq, "dst_mac: ");
|
|
seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
|
|
|
|
seq_printf(seq,
|
|
" udp_src_min: %d udp_src_max: %d"
|
|
" udp_dst_min: %d udp_dst_max: %d\n",
|
|
pkt_dev->udp_src_min, pkt_dev->udp_src_max,
|
|
pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
|
|
|
|
seq_printf(seq,
|
|
" src_mac_count: %d dst_mac_count: %d\n",
|
|
pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
|
|
|
|
if (pkt_dev->nr_labels) {
|
|
unsigned i;
|
|
seq_printf(seq, " mpls: ");
|
|
for (i = 0; i < pkt_dev->nr_labels; i++)
|
|
seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
|
|
i == pkt_dev->nr_labels-1 ? "\n" : ", ");
|
|
}
|
|
|
|
if (pkt_dev->vlan_id != 0xffff)
|
|
seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
|
|
pkt_dev->vlan_id, pkt_dev->vlan_p,
|
|
pkt_dev->vlan_cfi);
|
|
|
|
if (pkt_dev->svlan_id != 0xffff)
|
|
seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
|
|
pkt_dev->svlan_id, pkt_dev->svlan_p,
|
|
pkt_dev->svlan_cfi);
|
|
|
|
if (pkt_dev->tos)
|
|
seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
|
|
|
|
if (pkt_dev->traffic_class)
|
|
seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
|
|
|
|
if (pkt_dev->node >= 0)
|
|
seq_printf(seq, " node: %d\n", pkt_dev->node);
|
|
|
|
seq_printf(seq, " Flags: ");
|
|
|
|
if (pkt_dev->flags & F_IPV6)
|
|
seq_printf(seq, "IPV6 ");
|
|
|
|
if (pkt_dev->flags & F_IPSRC_RND)
|
|
seq_printf(seq, "IPSRC_RND ");
|
|
|
|
if (pkt_dev->flags & F_IPDST_RND)
|
|
seq_printf(seq, "IPDST_RND ");
|
|
|
|
if (pkt_dev->flags & F_TXSIZE_RND)
|
|
seq_printf(seq, "TXSIZE_RND ");
|
|
|
|
if (pkt_dev->flags & F_UDPSRC_RND)
|
|
seq_printf(seq, "UDPSRC_RND ");
|
|
|
|
if (pkt_dev->flags & F_UDPDST_RND)
|
|
seq_printf(seq, "UDPDST_RND ");
|
|
|
|
if (pkt_dev->flags & F_MPLS_RND)
|
|
seq_printf(seq, "MPLS_RND ");
|
|
|
|
if (pkt_dev->flags & F_QUEUE_MAP_RND)
|
|
seq_printf(seq, "QUEUE_MAP_RND ");
|
|
|
|
if (pkt_dev->flags & F_QUEUE_MAP_CPU)
|
|
seq_printf(seq, "QUEUE_MAP_CPU ");
|
|
|
|
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 ");
|
|
}
|
|
|
|
#ifdef CONFIG_XFRM
|
|
if (pkt_dev->flags & F_IPSEC_ON)
|
|
seq_printf(seq, "IPSEC ");
|
|
#endif
|
|
|
|
if (pkt_dev->flags & F_MACSRC_RND)
|
|
seq_printf(seq, "MACSRC_RND ");
|
|
|
|
if (pkt_dev->flags & F_MACDST_RND)
|
|
seq_printf(seq, "MACDST_RND ");
|
|
|
|
if (pkt_dev->flags & F_VID_RND)
|
|
seq_printf(seq, "VID_RND ");
|
|
|
|
if (pkt_dev->flags & F_SVID_RND)
|
|
seq_printf(seq, "SVID_RND ");
|
|
|
|
if (pkt_dev->flags & F_NODE)
|
|
seq_printf(seq, "NODE_ALLOC ");
|
|
|
|
seq_puts(seq, "\n");
|
|
|
|
/* not really stopped, more like last-running-at */
|
|
stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
|
|
idle = pkt_dev->idle_acc;
|
|
do_div(idle, NSEC_PER_USEC);
|
|
|
|
seq_printf(seq,
|
|
"Current:\n pkts-sofar: %llu errors: %llu\n",
|
|
(unsigned long long)pkt_dev->sofar,
|
|
(unsigned long long)pkt_dev->errors);
|
|
|
|
seq_printf(seq,
|
|
" started: %lluus stopped: %lluus idle: %lluus\n",
|
|
(unsigned long long) ktime_to_us(pkt_dev->started_at),
|
|
(unsigned long long) ktime_to_us(stopped),
|
|
(unsigned long long) idle);
|
|
|
|
seq_printf(seq,
|
|
" seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
|
|
pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
|
|
pkt_dev->cur_src_mac_offset);
|
|
|
|
if (pkt_dev->flags & F_IPV6) {
|
|
char b1[128], b2[128];
|
|
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",
|
|
pkt_dev->cur_saddr, pkt_dev->cur_daddr);
|
|
|
|
seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
|
|
pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
|
|
|
|
seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
|
|
|
|
seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
|
|
|
|
if (pkt_dev->result[0])
|
|
seq_printf(seq, "Result: %s\n", pkt_dev->result);
|
|
else
|
|
seq_printf(seq, "Result: Idle\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
|
|
__u32 *num)
|
|
{
|
|
int i = 0;
|
|
*num = 0;
|
|
|
|
for (; i < maxlen; i++) {
|
|
int value;
|
|
char c;
|
|
*num <<= 4;
|
|
if (get_user(c, &user_buffer[i]))
|
|
return -EFAULT;
|
|
value = hex_to_bin(c);
|
|
if (value >= 0)
|
|
*num |= value;
|
|
else
|
|
break;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static int count_trail_chars(const char __user * user_buffer,
|
|
unsigned int maxlen)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < maxlen; i++) {
|
|
char c;
|
|
if (get_user(c, &user_buffer[i]))
|
|
return -EFAULT;
|
|
switch (c) {
|
|
case '\"':
|
|
case '\n':
|
|
case '\r':
|
|
case '\t':
|
|
case ' ':
|
|
case '=':
|
|
break;
|
|
default:
|
|
goto done;
|
|
}
|
|
}
|
|
done:
|
|
return i;
|
|
}
|
|
|
|
static unsigned long num_arg(const char __user * user_buffer,
|
|
unsigned long maxlen, unsigned long *num)
|
|
{
|
|
int i = 0;
|
|
*num = 0;
|
|
|
|
for (; i < maxlen; i++) {
|
|
char c;
|
|
if (get_user(c, &user_buffer[i]))
|
|
return -EFAULT;
|
|
if ((c >= '0') && (c <= '9')) {
|
|
*num *= 10;
|
|
*num += c - '0';
|
|
} else
|
|
break;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static int strn_len(const char __user * user_buffer, unsigned int maxlen)
|
|
{
|
|
int i = 0;
|
|
|
|
for (; i < maxlen; i++) {
|
|
char c;
|
|
if (get_user(c, &user_buffer[i]))
|
|
return -EFAULT;
|
|
switch (c) {
|
|
case '\"':
|
|
case '\n':
|
|
case '\r':
|
|
case '\t':
|
|
case ' ':
|
|
goto done_str;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
done_str:
|
|
return i;
|
|
}
|
|
|
|
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;
|
|
len = hex32_arg(&buffer[i], 8, &tmp);
|
|
if (len <= 0)
|
|
return len;
|
|
pkt_dev->labels[n] = htonl(tmp);
|
|
if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
|
|
pkt_dev->flags |= F_MPLS_RND;
|
|
i += len;
|
|
if (get_user(c, &buffer[i]))
|
|
return -EFAULT;
|
|
i++;
|
|
n++;
|
|
if (n >= MAX_MPLS_LABELS)
|
|
return -E2BIG;
|
|
} while (c == ',');
|
|
|
|
pkt_dev->nr_labels = n;
|
|
return i;
|
|
}
|
|
|
|
static ssize_t pktgen_if_write(struct file *file,
|
|
const char __user * user_buffer, size_t count,
|
|
loff_t * offset)
|
|
{
|
|
struct seq_file *seq = file->private_data;
|
|
struct pktgen_dev *pkt_dev = seq->private;
|
|
int i = 0, max, len;
|
|
char name[16], valstr[32];
|
|
unsigned long value = 0;
|
|
char *pg_result = NULL;
|
|
int tmp = 0;
|
|
char buf[128];
|
|
|
|
pg_result = &(pkt_dev->result[0]);
|
|
|
|
if (count < 1) {
|
|
pr_warning("wrong command format\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
max = count - i;
|
|
tmp = count_trail_chars(&user_buffer[i], max);
|
|
if (tmp < 0) {
|
|
pr_warning("illegal format\n");
|
|
return tmp;
|
|
}
|
|
i += tmp;
|
|
|
|
/* Read variable name */
|
|
|
|
len = strn_len(&user_buffer[i], sizeof(name) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
memset(name, 0, sizeof(name));
|
|
if (copy_from_user(name, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
|
|
max = count - i;
|
|
len = count_trail_chars(&user_buffer[i], max);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
|
|
if (debug) {
|
|
char tb[count + 1];
|
|
if (copy_from_user(tb, user_buffer, count))
|
|
return -EFAULT;
|
|
tb[count] = 0;
|
|
printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
|
|
(unsigned long)count, tb);
|
|
}
|
|
|
|
if (!strcmp(name, "min_pkt_size")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value < 14 + 20 + 8)
|
|
value = 14 + 20 + 8;
|
|
if (value != pkt_dev->min_pkt_size) {
|
|
pkt_dev->min_pkt_size = value;
|
|
pkt_dev->cur_pkt_size = value;
|
|
}
|
|
sprintf(pg_result, "OK: min_pkt_size=%u",
|
|
pkt_dev->min_pkt_size);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "max_pkt_size")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value < 14 + 20 + 8)
|
|
value = 14 + 20 + 8;
|
|
if (value != pkt_dev->max_pkt_size) {
|
|
pkt_dev->max_pkt_size = value;
|
|
pkt_dev->cur_pkt_size = value;
|
|
}
|
|
sprintf(pg_result, "OK: max_pkt_size=%u",
|
|
pkt_dev->max_pkt_size);
|
|
return count;
|
|
}
|
|
|
|
/* Shortcut for min = max */
|
|
|
|
if (!strcmp(name, "pkt_size")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value < 14 + 20 + 8)
|
|
value = 14 + 20 + 8;
|
|
if (value != pkt_dev->min_pkt_size) {
|
|
pkt_dev->min_pkt_size = value;
|
|
pkt_dev->max_pkt_size = value;
|
|
pkt_dev->cur_pkt_size = value;
|
|
}
|
|
sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "debug")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
debug = value;
|
|
sprintf(pg_result, "OK: debug=%u", debug);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "frags")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->nfrags = value;
|
|
sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "delay")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value == 0x7FFFFFFF)
|
|
pkt_dev->delay = ULLONG_MAX;
|
|
else
|
|
pkt_dev->delay = (u64)value;
|
|
|
|
sprintf(pg_result, "OK: delay=%llu",
|
|
(unsigned long long) pkt_dev->delay);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "rate")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (!value)
|
|
return len;
|
|
pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
|
|
if (debug)
|
|
pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
|
|
|
|
sprintf(pg_result, "OK: rate=%lu", value);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "ratep")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (!value)
|
|
return len;
|
|
pkt_dev->delay = NSEC_PER_SEC/value;
|
|
if (debug)
|
|
pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
|
|
|
|
sprintf(pg_result, "OK: rate=%lu", value);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "udp_src_min")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value != pkt_dev->udp_src_min) {
|
|
pkt_dev->udp_src_min = value;
|
|
pkt_dev->cur_udp_src = value;
|
|
}
|
|
sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "udp_dst_min")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value != pkt_dev->udp_dst_min) {
|
|
pkt_dev->udp_dst_min = value;
|
|
pkt_dev->cur_udp_dst = value;
|
|
}
|
|
sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "udp_src_max")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value != pkt_dev->udp_src_max) {
|
|
pkt_dev->udp_src_max = value;
|
|
pkt_dev->cur_udp_src = value;
|
|
}
|
|
sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "udp_dst_max")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value != pkt_dev->udp_dst_max) {
|
|
pkt_dev->udp_dst_max = value;
|
|
pkt_dev->cur_udp_dst = value;
|
|
}
|
|
sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "clone_skb")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->clone_skb = value;
|
|
|
|
sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "count")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->count = value;
|
|
sprintf(pg_result, "OK: count=%llu",
|
|
(unsigned long long)pkt_dev->count);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "src_mac_count")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (pkt_dev->src_mac_count != value) {
|
|
pkt_dev->src_mac_count = value;
|
|
pkt_dev->cur_src_mac_offset = 0;
|
|
}
|
|
sprintf(pg_result, "OK: src_mac_count=%d",
|
|
pkt_dev->src_mac_count);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst_mac_count")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (pkt_dev->dst_mac_count != value) {
|
|
pkt_dev->dst_mac_count = value;
|
|
pkt_dev->cur_dst_mac_offset = 0;
|
|
}
|
|
sprintf(pg_result, "OK: dst_mac_count=%d",
|
|
pkt_dev->dst_mac_count);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "node")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
|
|
if (node_possible(value)) {
|
|
pkt_dev->node = value;
|
|
sprintf(pg_result, "OK: node=%d", pkt_dev->node);
|
|
}
|
|
else
|
|
sprintf(pg_result, "ERROR: node not possible");
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "flag")) {
|
|
char f[32];
|
|
memset(f, 0, 32);
|
|
len = strn_len(&user_buffer[i], sizeof(f) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
if (copy_from_user(f, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
if (strcmp(f, "IPSRC_RND") == 0)
|
|
pkt_dev->flags |= F_IPSRC_RND;
|
|
|
|
else if (strcmp(f, "!IPSRC_RND") == 0)
|
|
pkt_dev->flags &= ~F_IPSRC_RND;
|
|
|
|
else if (strcmp(f, "TXSIZE_RND") == 0)
|
|
pkt_dev->flags |= F_TXSIZE_RND;
|
|
|
|
else if (strcmp(f, "!TXSIZE_RND") == 0)
|
|
pkt_dev->flags &= ~F_TXSIZE_RND;
|
|
|
|
else if (strcmp(f, "IPDST_RND") == 0)
|
|
pkt_dev->flags |= F_IPDST_RND;
|
|
|
|
else if (strcmp(f, "!IPDST_RND") == 0)
|
|
pkt_dev->flags &= ~F_IPDST_RND;
|
|
|
|
else if (strcmp(f, "UDPSRC_RND") == 0)
|
|
pkt_dev->flags |= F_UDPSRC_RND;
|
|
|
|
else if (strcmp(f, "!UDPSRC_RND") == 0)
|
|
pkt_dev->flags &= ~F_UDPSRC_RND;
|
|
|
|
else if (strcmp(f, "UDPDST_RND") == 0)
|
|
pkt_dev->flags |= F_UDPDST_RND;
|
|
|
|
else if (strcmp(f, "!UDPDST_RND") == 0)
|
|
pkt_dev->flags &= ~F_UDPDST_RND;
|
|
|
|
else if (strcmp(f, "MACSRC_RND") == 0)
|
|
pkt_dev->flags |= F_MACSRC_RND;
|
|
|
|
else if (strcmp(f, "!MACSRC_RND") == 0)
|
|
pkt_dev->flags &= ~F_MACSRC_RND;
|
|
|
|
else if (strcmp(f, "MACDST_RND") == 0)
|
|
pkt_dev->flags |= F_MACDST_RND;
|
|
|
|
else if (strcmp(f, "!MACDST_RND") == 0)
|
|
pkt_dev->flags &= ~F_MACDST_RND;
|
|
|
|
else if (strcmp(f, "MPLS_RND") == 0)
|
|
pkt_dev->flags |= F_MPLS_RND;
|
|
|
|
else if (strcmp(f, "!MPLS_RND") == 0)
|
|
pkt_dev->flags &= ~F_MPLS_RND;
|
|
|
|
else if (strcmp(f, "VID_RND") == 0)
|
|
pkt_dev->flags |= F_VID_RND;
|
|
|
|
else if (strcmp(f, "!VID_RND") == 0)
|
|
pkt_dev->flags &= ~F_VID_RND;
|
|
|
|
else if (strcmp(f, "SVID_RND") == 0)
|
|
pkt_dev->flags |= F_SVID_RND;
|
|
|
|
else if (strcmp(f, "!SVID_RND") == 0)
|
|
pkt_dev->flags &= ~F_SVID_RND;
|
|
|
|
else if (strcmp(f, "FLOW_SEQ") == 0)
|
|
pkt_dev->flags |= F_FLOW_SEQ;
|
|
|
|
else if (strcmp(f, "QUEUE_MAP_RND") == 0)
|
|
pkt_dev->flags |= F_QUEUE_MAP_RND;
|
|
|
|
else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
|
|
pkt_dev->flags &= ~F_QUEUE_MAP_RND;
|
|
|
|
else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
|
|
pkt_dev->flags |= F_QUEUE_MAP_CPU;
|
|
|
|
else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
|
|
pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
|
|
#ifdef CONFIG_XFRM
|
|
else if (strcmp(f, "IPSEC") == 0)
|
|
pkt_dev->flags |= F_IPSEC_ON;
|
|
#endif
|
|
|
|
else if (strcmp(f, "!IPV6") == 0)
|
|
pkt_dev->flags &= ~F_IPV6;
|
|
|
|
else if (strcmp(f, "NODE_ALLOC") == 0)
|
|
pkt_dev->flags |= F_NODE;
|
|
|
|
else if (strcmp(f, "!NODE_ALLOC") == 0)
|
|
pkt_dev->flags &= ~F_NODE;
|
|
|
|
else {
|
|
sprintf(pg_result,
|
|
"Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
|
|
f,
|
|
"IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
|
|
"MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
|
|
return count;
|
|
}
|
|
sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
|
|
len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
if (strcmp(buf, pkt_dev->dst_min) != 0) {
|
|
memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
|
|
strncpy(pkt_dev->dst_min, buf, len);
|
|
pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
|
|
pkt_dev->cur_daddr = pkt_dev->daddr_min;
|
|
}
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
|
|
pkt_dev->dst_min);
|
|
i += len;
|
|
sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst_max")) {
|
|
len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
|
|
buf[len] = 0;
|
|
if (strcmp(buf, pkt_dev->dst_max) != 0) {
|
|
memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
|
|
strncpy(pkt_dev->dst_max, buf, len);
|
|
pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
|
|
pkt_dev->cur_daddr = pkt_dev->daddr_max;
|
|
}
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
|
|
pkt_dev->dst_max);
|
|
i += len;
|
|
sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst6")) {
|
|
len = strn_len(&user_buffer[i], sizeof(buf) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
pkt_dev->flags |= F_IPV6;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
|
|
scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
|
|
fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
|
|
|
|
ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
|
|
|
|
i += len;
|
|
sprintf(pg_result, "OK: dst6=%s", buf);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst6_min")) {
|
|
len = strn_len(&user_buffer[i], sizeof(buf) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
pkt_dev->flags |= F_IPV6;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
|
|
scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
|
|
fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
|
|
|
|
ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
|
|
&pkt_dev->min_in6_daddr);
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
|
|
|
|
i += len;
|
|
sprintf(pg_result, "OK: dst6_min=%s", buf);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst6_max")) {
|
|
len = strn_len(&user_buffer[i], sizeof(buf) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
pkt_dev->flags |= F_IPV6;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
|
|
scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
|
|
fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
|
|
|
|
i += len;
|
|
sprintf(pg_result, "OK: dst6_max=%s", buf);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "src6")) {
|
|
len = strn_len(&user_buffer[i], sizeof(buf) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
pkt_dev->flags |= F_IPV6;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
|
|
scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
|
|
fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
|
|
|
|
ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
|
|
|
|
i += len;
|
|
sprintf(pg_result, "OK: src6=%s", buf);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "src_min")) {
|
|
len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
if (strcmp(buf, pkt_dev->src_min) != 0) {
|
|
memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
|
|
strncpy(pkt_dev->src_min, buf, len);
|
|
pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
|
|
pkt_dev->cur_saddr = pkt_dev->saddr_min;
|
|
}
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
|
|
pkt_dev->src_min);
|
|
i += len;
|
|
sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "src_max")) {
|
|
len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
if (copy_from_user(buf, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
buf[len] = 0;
|
|
if (strcmp(buf, pkt_dev->src_max) != 0) {
|
|
memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
|
|
strncpy(pkt_dev->src_max, buf, len);
|
|
pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
|
|
pkt_dev->cur_saddr = pkt_dev->saddr_max;
|
|
}
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
|
|
pkt_dev->src_max);
|
|
i += len;
|
|
sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "dst_mac")) {
|
|
char *v = valstr;
|
|
unsigned char old_dmac[ETH_ALEN];
|
|
unsigned char *m = pkt_dev->dst_mac;
|
|
memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
|
|
|
|
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
memset(valstr, 0, sizeof(valstr));
|
|
if (copy_from_user(valstr, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
|
|
for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
|
|
int value;
|
|
|
|
value = hex_to_bin(*v);
|
|
if (value >= 0)
|
|
*m = *m * 16 + value;
|
|
|
|
if (*v == ':') {
|
|
m++;
|
|
*m = 0;
|
|
}
|
|
}
|
|
|
|
/* Set up Dest MAC */
|
|
if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
|
|
memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
|
|
|
|
sprintf(pg_result, "OK: dstmac");
|
|
return count;
|
|
}
|
|
if (!strcmp(name, "src_mac")) {
|
|
char *v = valstr;
|
|
unsigned char old_smac[ETH_ALEN];
|
|
unsigned char *m = pkt_dev->src_mac;
|
|
|
|
memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
|
|
|
|
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
memset(valstr, 0, sizeof(valstr));
|
|
if (copy_from_user(valstr, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
|
|
for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
|
|
int value;
|
|
|
|
value = hex_to_bin(*v);
|
|
if (value >= 0)
|
|
*m = *m * 16 + value;
|
|
|
|
if (*v == ':') {
|
|
m++;
|
|
*m = 0;
|
|
}
|
|
}
|
|
|
|
/* 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);
|
|
|
|
sprintf(pg_result, "OK: srcmac");
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "clear_counters")) {
|
|
pktgen_clear_counters(pkt_dev);
|
|
sprintf(pg_result, "OK: Clearing counters.\n");
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "flows")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value > MAX_CFLOWS)
|
|
value = MAX_CFLOWS;
|
|
|
|
pkt_dev->cflows = value;
|
|
sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "flowlen")) {
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->lflow = value;
|
|
sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "queue_map_min")) {
|
|
len = num_arg(&user_buffer[i], 5, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->queue_map_min = value;
|
|
sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "queue_map_max")) {
|
|
len = num_arg(&user_buffer[i], 5, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
pkt_dev->queue_map_max = value;
|
|
sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "mpls")) {
|
|
unsigned n, cnt;
|
|
|
|
len = get_labels(&user_buffer[i], pkt_dev);
|
|
if (len < 0)
|
|
return len;
|
|
i += len;
|
|
cnt = sprintf(pg_result, "OK: mpls=");
|
|
for (n = 0; n < pkt_dev->nr_labels; n++)
|
|
cnt += sprintf(pg_result + cnt,
|
|
"%08x%s", ntohl(pkt_dev->labels[n]),
|
|
n == pkt_dev->nr_labels-1 ? "" : ",");
|
|
|
|
if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
|
|
pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
|
|
pkt_dev->svlan_id = 0xffff;
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "vlan_id")) {
|
|
len = num_arg(&user_buffer[i], 4, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (value <= 4095) {
|
|
pkt_dev->vlan_id = value; /* turn on VLAN */
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: VLAN turned on\n");
|
|
|
|
if (debug && pkt_dev->nr_labels)
|
|
printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
|
|
|
|
pkt_dev->nr_labels = 0; /* turn off MPLS */
|
|
sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
|
|
} else {
|
|
pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
|
|
pkt_dev->svlan_id = 0xffff;
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "vlan_p")) {
|
|
len = num_arg(&user_buffer[i], 1, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
|
|
pkt_dev->vlan_p = value;
|
|
sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: vlan_p must be 0-7");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "vlan_cfi")) {
|
|
len = num_arg(&user_buffer[i], 1, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
|
|
pkt_dev->vlan_cfi = value;
|
|
sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "svlan_id")) {
|
|
len = num_arg(&user_buffer[i], 4, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
|
|
pkt_dev->svlan_id = value; /* turn on SVLAN */
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
|
|
|
|
if (debug && pkt_dev->nr_labels)
|
|
printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
|
|
|
|
pkt_dev->nr_labels = 0; /* turn off MPLS */
|
|
sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
|
|
} else {
|
|
pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
|
|
pkt_dev->svlan_id = 0xffff;
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "svlan_p")) {
|
|
len = num_arg(&user_buffer[i], 1, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
|
|
pkt_dev->svlan_p = value;
|
|
sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: svlan_p must be 0-7");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "svlan_cfi")) {
|
|
len = num_arg(&user_buffer[i], 1, &value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
|
|
pkt_dev->svlan_cfi = value;
|
|
sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "tos")) {
|
|
__u32 tmp_value = 0;
|
|
len = hex32_arg(&user_buffer[i], 2, &tmp_value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (len == 2) {
|
|
pkt_dev->tos = tmp_value;
|
|
sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: tos must be 00-ff");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
if (!strcmp(name, "traffic_class")) {
|
|
__u32 tmp_value = 0;
|
|
len = hex32_arg(&user_buffer[i], 2, &tmp_value);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
if (len == 2) {
|
|
pkt_dev->traffic_class = tmp_value;
|
|
sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
|
|
} else {
|
|
sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int pktgen_if_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, pktgen_if_show, PDE(inode)->data);
|
|
}
|
|
|
|
static const struct file_operations pktgen_if_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = pktgen_if_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = pktgen_if_write,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int pktgen_thread_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct pktgen_thread *t = seq->private;
|
|
const struct pktgen_dev *pkt_dev;
|
|
|
|
BUG_ON(!t);
|
|
|
|
seq_printf(seq, "Running: ");
|
|
|
|
if_lock(t);
|
|
list_for_each_entry(pkt_dev, &t->if_list, list)
|
|
if (pkt_dev->running)
|
|
seq_printf(seq, "%s ", pkt_dev->odevname);
|
|
|
|
seq_printf(seq, "\nStopped: ");
|
|
|
|
list_for_each_entry(pkt_dev, &t->if_list, list)
|
|
if (!pkt_dev->running)
|
|
seq_printf(seq, "%s ", pkt_dev->odevname);
|
|
|
|
if (t->result[0])
|
|
seq_printf(seq, "\nResult: %s\n", t->result);
|
|
else
|
|
seq_printf(seq, "\nResult: NA\n");
|
|
|
|
if_unlock(t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t pktgen_thread_write(struct file *file,
|
|
const char __user * user_buffer,
|
|
size_t count, loff_t * offset)
|
|
{
|
|
struct seq_file *seq = file->private_data;
|
|
struct pktgen_thread *t = seq->private;
|
|
int i = 0, max, len, ret;
|
|
char name[40];
|
|
char *pg_result;
|
|
|
|
if (count < 1) {
|
|
// sprintf(pg_result, "Wrong command format");
|
|
return -EINVAL;
|
|
}
|
|
|
|
max = count - i;
|
|
len = count_trail_chars(&user_buffer[i], max);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
|
|
/* Read variable name */
|
|
|
|
len = strn_len(&user_buffer[i], sizeof(name) - 1);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
memset(name, 0, sizeof(name));
|
|
if (copy_from_user(name, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
|
|
max = count - i;
|
|
len = count_trail_chars(&user_buffer[i], max);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
i += len;
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
|
|
name, (unsigned long)count);
|
|
|
|
if (!t) {
|
|
pr_err("ERROR: No thread\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
pg_result = &(t->result[0]);
|
|
|
|
if (!strcmp(name, "add_device")) {
|
|
char f[32];
|
|
memset(f, 0, 32);
|
|
len = strn_len(&user_buffer[i], sizeof(f) - 1);
|
|
if (len < 0) {
|
|
ret = len;
|
|
goto out;
|
|
}
|
|
if (copy_from_user(f, &user_buffer[i], len))
|
|
return -EFAULT;
|
|
i += len;
|
|
mutex_lock(&pktgen_thread_lock);
|
|
pktgen_add_device(t, f);
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
ret = count;
|
|
sprintf(pg_result, "OK: add_device=%s", f);
|
|
goto out;
|
|
}
|
|
|
|
if (!strcmp(name, "rem_device_all")) {
|
|
mutex_lock(&pktgen_thread_lock);
|
|
t->control |= T_REMDEVALL;
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
|
|
ret = count;
|
|
sprintf(pg_result, "OK: rem_device_all");
|
|
goto out;
|
|
}
|
|
|
|
if (!strcmp(name, "max_before_softirq")) {
|
|
sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
|
|
ret = count;
|
|
goto out;
|
|
}
|
|
|
|
ret = -EINVAL;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int pktgen_thread_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, pktgen_thread_show, PDE(inode)->data);
|
|
}
|
|
|
|
static const struct file_operations pktgen_thread_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = pktgen_thread_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = pktgen_thread_write,
|
|
.release = single_release,
|
|
};
|
|
|
|
/* Think find or remove for NN */
|
|
static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
|
|
{
|
|
struct pktgen_thread *t;
|
|
struct pktgen_dev *pkt_dev = NULL;
|
|
bool exact = (remove == FIND);
|
|
|
|
list_for_each_entry(t, &pktgen_threads, th_list) {
|
|
pkt_dev = pktgen_find_dev(t, ifname, exact);
|
|
if (pkt_dev) {
|
|
if (remove) {
|
|
if_lock(t);
|
|
pkt_dev->removal_mark = 1;
|
|
t->control |= T_REMDEV;
|
|
if_unlock(t);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return pkt_dev;
|
|
}
|
|
|
|
/*
|
|
* mark a device for removal
|
|
*/
|
|
static void pktgen_mark_device(const char *ifname)
|
|
{
|
|
struct pktgen_dev *pkt_dev = NULL;
|
|
const int max_tries = 10, msec_per_try = 125;
|
|
int i = 0;
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
pr_debug("%s: marking %s for removal\n", __func__, ifname);
|
|
|
|
while (1) {
|
|
|
|
pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
|
|
if (pkt_dev == NULL)
|
|
break; /* success */
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
pr_debug("%s: waiting for %s to disappear....\n",
|
|
__func__, ifname);
|
|
schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
if (++i >= max_tries) {
|
|
pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
|
|
__func__, msec_per_try * i, ifname);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
}
|
|
|
|
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 = proc_create_data(dev->name, 0600,
|
|
pg_proc_dir,
|
|
&pktgen_if_fops,
|
|
pkt_dev);
|
|
if (!pkt_dev->entry)
|
|
pr_err("can't move proc entry for '%s'\n",
|
|
dev->name);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int pktgen_device_event(struct notifier_block *unused,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = ptr;
|
|
|
|
if (!net_eq(dev_net(dev), &init_net))
|
|
return NOTIFY_DONE;
|
|
|
|
/* It is OK that we do not hold the group lock right now,
|
|
* as we run under the RTNL lock.
|
|
*/
|
|
|
|
switch (event) {
|
|
case NETDEV_CHANGENAME:
|
|
pktgen_change_name(dev);
|
|
break;
|
|
|
|
case NETDEV_UNREGISTER:
|
|
pktgen_mark_device(dev->name);
|
|
break;
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
/* Associate pktgen_dev with a device. */
|
|
|
|
static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
|
|
{
|
|
struct net_device *odev;
|
|
int err;
|
|
|
|
/* Clean old setups */
|
|
if (pkt_dev->odev) {
|
|
dev_put(pkt_dev->odev);
|
|
pkt_dev->odev = NULL;
|
|
}
|
|
|
|
odev = pktgen_dev_get_by_name(pkt_dev, ifname);
|
|
if (!odev) {
|
|
pr_err("no such netdevice: \"%s\"\n", ifname);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (odev->type != ARPHRD_ETHER) {
|
|
pr_err("not an ethernet device: \"%s\"\n", ifname);
|
|
err = -EINVAL;
|
|
} else if (!netif_running(odev)) {
|
|
pr_err("device is down: \"%s\"\n", ifname);
|
|
err = -ENETDOWN;
|
|
} else {
|
|
pkt_dev->odev = odev;
|
|
return 0;
|
|
}
|
|
|
|
dev_put(odev);
|
|
return err;
|
|
}
|
|
|
|
/* Read pkt_dev from the interface and set up internal pktgen_dev
|
|
* structure to have the right information to create/send packets
|
|
*/
|
|
static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
|
|
{
|
|
int ntxq;
|
|
|
|
if (!pkt_dev->odev) {
|
|
pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
|
|
sprintf(pkt_dev->result,
|
|
"ERROR: pkt_dev->odev == NULL in setup_inject.\n");
|
|
return;
|
|
}
|
|
|
|
/* make sure that we don't pick a non-existing transmit queue */
|
|
ntxq = pkt_dev->odev->real_num_tx_queues;
|
|
|
|
if (ntxq <= pkt_dev->queue_map_min) {
|
|
pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
|
|
pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
|
|
pkt_dev->odevname);
|
|
pkt_dev->queue_map_min = ntxq - 1;
|
|
}
|
|
if (pkt_dev->queue_map_max >= ntxq) {
|
|
pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
|
|
pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
|
|
pkt_dev->odevname);
|
|
pkt_dev->queue_map_max = ntxq - 1;
|
|
}
|
|
|
|
/* Default to the interface's mac if not explicitly set. */
|
|
|
|
if (is_zero_ether_addr(pkt_dev->src_mac))
|
|
memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
|
|
|
|
/* Set up Dest MAC */
|
|
memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
|
|
|
|
/* Set up pkt size */
|
|
pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
|
|
|
|
if (pkt_dev->flags & F_IPV6) {
|
|
/*
|
|
* Skip this automatic address setting until locks or functions
|
|
* gets exported
|
|
*/
|
|
|
|
#ifdef NOTNOW
|
|
int i, set = 0, err = 1;
|
|
struct inet6_dev *idev;
|
|
|
|
for (i = 0; i < IN6_ADDR_HSIZE; i++)
|
|
if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
|
|
set = 1;
|
|
break;
|
|
}
|
|
|
|
if (!set) {
|
|
|
|
/*
|
|
* Use linklevel address if unconfigured.
|
|
*
|
|
* use ipv6_get_lladdr if/when it's get exported
|
|
*/
|
|
|
|
rcu_read_lock();
|
|
idev = __in6_dev_get(pkt_dev->odev);
|
|
if (idev) {
|
|
struct inet6_ifaddr *ifp;
|
|
|
|
read_lock_bh(&idev->lock);
|
|
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);
|
|
err = 0;
|
|
break;
|
|
}
|
|
}
|
|
read_unlock_bh(&idev->lock);
|
|
}
|
|
rcu_read_unlock();
|
|
if (err)
|
|
pr_err("ERROR: IPv6 link address not available\n");
|
|
}
|
|
#endif
|
|
} else {
|
|
pkt_dev->saddr_min = 0;
|
|
pkt_dev->saddr_max = 0;
|
|
if (strlen(pkt_dev->src_min) == 0) {
|
|
|
|
struct in_device *in_dev;
|
|
|
|
rcu_read_lock();
|
|
in_dev = __in_dev_get_rcu(pkt_dev->odev);
|
|
if (in_dev) {
|
|
if (in_dev->ifa_list) {
|
|
pkt_dev->saddr_min =
|
|
in_dev->ifa_list->ifa_address;
|
|
pkt_dev->saddr_max = pkt_dev->saddr_min;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
} else {
|
|
pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
|
|
pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
|
|
}
|
|
|
|
pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
|
|
pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
|
|
}
|
|
/* Initialize current values. */
|
|
pkt_dev->cur_dst_mac_offset = 0;
|
|
pkt_dev->cur_src_mac_offset = 0;
|
|
pkt_dev->cur_saddr = pkt_dev->saddr_min;
|
|
pkt_dev->cur_daddr = pkt_dev->daddr_min;
|
|
pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
|
|
pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
|
|
pkt_dev->nflows = 0;
|
|
}
|
|
|
|
|
|
static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
|
|
{
|
|
ktime_t start_time, end_time;
|
|
s64 remaining;
|
|
struct hrtimer_sleeper t;
|
|
|
|
hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
|
|
hrtimer_set_expires(&t.timer, spin_until);
|
|
|
|
remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
|
|
if (remaining <= 0) {
|
|
pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
|
|
return;
|
|
}
|
|
|
|
start_time = ktime_now();
|
|
if (remaining < 100000)
|
|
ndelay(remaining); /* really small just spin */
|
|
else {
|
|
/* see do_nanosleep */
|
|
hrtimer_init_sleeper(&t, current);
|
|
do {
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
|
|
if (!hrtimer_active(&t.timer))
|
|
t.task = NULL;
|
|
|
|
if (likely(t.task))
|
|
schedule();
|
|
|
|
hrtimer_cancel(&t.timer);
|
|
} while (t.task && pkt_dev->running && !signal_pending(current));
|
|
__set_current_state(TASK_RUNNING);
|
|
}
|
|
end_time = ktime_now();
|
|
|
|
pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
|
|
pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
|
|
}
|
|
|
|
static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
|
|
{
|
|
pkt_dev->pkt_overhead = 0;
|
|
pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
|
|
pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
|
|
pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
|
|
}
|
|
|
|
static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
|
|
{
|
|
return !!(pkt_dev->flows[flow].flags & F_INIT);
|
|
}
|
|
|
|
static inline int f_pick(struct pktgen_dev *pkt_dev)
|
|
{
|
|
int flow = pkt_dev->curfl;
|
|
|
|
if (pkt_dev->flags & F_FLOW_SEQ) {
|
|
if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
|
|
/* reset time */
|
|
pkt_dev->flows[flow].count = 0;
|
|
pkt_dev->flows[flow].flags = 0;
|
|
pkt_dev->curfl += 1;
|
|
if (pkt_dev->curfl >= pkt_dev->cflows)
|
|
pkt_dev->curfl = 0; /*reset */
|
|
}
|
|
} else {
|
|
flow = random32() % pkt_dev->cflows;
|
|
pkt_dev->curfl = flow;
|
|
|
|
if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
|
|
pkt_dev->flows[flow].count = 0;
|
|
pkt_dev->flows[flow].flags = 0;
|
|
}
|
|
}
|
|
|
|
return pkt_dev->curfl;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_XFRM
|
|
/* If there was already an IPSEC SA, we keep it as is, else
|
|
* we go look for it ...
|
|
*/
|
|
#define DUMMY_MARK 0
|
|
static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
|
|
{
|
|
struct xfrm_state *x = pkt_dev->flows[flow].x;
|
|
if (!x) {
|
|
/*slow path: we dont already have xfrm_state*/
|
|
x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
|
|
(xfrm_address_t *)&pkt_dev->cur_daddr,
|
|
(xfrm_address_t *)&pkt_dev->cur_saddr,
|
|
AF_INET,
|
|
pkt_dev->ipsmode,
|
|
pkt_dev->ipsproto, 0);
|
|
if (x) {
|
|
pkt_dev->flows[flow].x = x;
|
|
set_pkt_overhead(pkt_dev);
|
|
pkt_dev->pkt_overhead += x->props.header_len;
|
|
}
|
|
|
|
}
|
|
}
|
|
#endif
|
|
static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
|
|
{
|
|
|
|
if (pkt_dev->flags & F_QUEUE_MAP_CPU)
|
|
pkt_dev->cur_queue_map = smp_processor_id();
|
|
|
|
else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
|
|
__u16 t;
|
|
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
|
|
t = 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;
|
|
}
|
|
pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
|
|
}
|
|
|
|
/* Increment/randomize headers according to flags and current values
|
|
* for IP src/dest, UDP src/dst port, MAC-Addr src/dst
|
|
*/
|
|
static void mod_cur_headers(struct pktgen_dev *pkt_dev)
|
|
{
|
|
__u32 imn;
|
|
__u32 imx;
|
|
int flow = 0;
|
|
|
|
if (pkt_dev->cflows)
|
|
flow = f_pick(pkt_dev);
|
|
|
|
/* Deal with source MAC */
|
|
if (pkt_dev->src_mac_count > 1) {
|
|
__u32 mc;
|
|
__u32 tmp;
|
|
|
|
if (pkt_dev->flags & F_MACSRC_RND)
|
|
mc = random32() % pkt_dev->src_mac_count;
|
|
else {
|
|
mc = pkt_dev->cur_src_mac_offset++;
|
|
if (pkt_dev->cur_src_mac_offset >=
|
|
pkt_dev->src_mac_count)
|
|
pkt_dev->cur_src_mac_offset = 0;
|
|
}
|
|
|
|
tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
|
|
pkt_dev->hh[11] = tmp;
|
|
tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[10] = tmp;
|
|
tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[9] = tmp;
|
|
tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[8] = tmp;
|
|
tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
|
|
pkt_dev->hh[7] = tmp;
|
|
}
|
|
|
|
/* Deal with Destination MAC */
|
|
if (pkt_dev->dst_mac_count > 1) {
|
|
__u32 mc;
|
|
__u32 tmp;
|
|
|
|
if (pkt_dev->flags & F_MACDST_RND)
|
|
mc = random32() % pkt_dev->dst_mac_count;
|
|
|
|
else {
|
|
mc = pkt_dev->cur_dst_mac_offset++;
|
|
if (pkt_dev->cur_dst_mac_offset >=
|
|
pkt_dev->dst_mac_count) {
|
|
pkt_dev->cur_dst_mac_offset = 0;
|
|
}
|
|
}
|
|
|
|
tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
|
|
pkt_dev->hh[5] = tmp;
|
|
tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[4] = tmp;
|
|
tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[3] = tmp;
|
|
tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
|
|
pkt_dev->hh[2] = tmp;
|
|
tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
|
|
pkt_dev->hh[1] = tmp;
|
|
}
|
|
|
|
if (pkt_dev->flags & F_MPLS_RND) {
|
|
unsigned i;
|
|
for (i = 0; i < pkt_dev->nr_labels; i++)
|
|
if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
|
|
pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
|
|
((__force __be32)random32() &
|
|
htonl(0x000fffff));
|
|
}
|
|
|
|
if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
|
|
pkt_dev->vlan_id = random32() & (4096-1);
|
|
}
|
|
|
|
if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
|
|
pkt_dev->svlan_id = random32() & (4096 - 1);
|
|
}
|
|
|
|
if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
|
|
if (pkt_dev->flags & F_UDPSRC_RND)
|
|
pkt_dev->cur_udp_src = random32() %
|
|
(pkt_dev->udp_src_max - pkt_dev->udp_src_min)
|
|
+ pkt_dev->udp_src_min;
|
|
|
|
else {
|
|
pkt_dev->cur_udp_src++;
|
|
if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
|
|
pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
|
|
}
|
|
}
|
|
|
|
if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
|
|
if (pkt_dev->flags & F_UDPDST_RND) {
|
|
pkt_dev->cur_udp_dst = random32() %
|
|
(pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
|
|
+ pkt_dev->udp_dst_min;
|
|
} else {
|
|
pkt_dev->cur_udp_dst++;
|
|
if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
|
|
pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
|
|
}
|
|
}
|
|
|
|
if (!(pkt_dev->flags & F_IPV6)) {
|
|
|
|
imn = ntohl(pkt_dev->saddr_min);
|
|
imx = ntohl(pkt_dev->saddr_max);
|
|
if (imn < imx) {
|
|
__u32 t;
|
|
if (pkt_dev->flags & F_IPSRC_RND)
|
|
t = random32() % (imx - imn) + imn;
|
|
else {
|
|
t = ntohl(pkt_dev->cur_saddr);
|
|
t++;
|
|
if (t > imx)
|
|
t = imn;
|
|
|
|
}
|
|
pkt_dev->cur_saddr = htonl(t);
|
|
}
|
|
|
|
if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
|
|
pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
|
|
} else {
|
|
imn = ntohl(pkt_dev->daddr_min);
|
|
imx = ntohl(pkt_dev->daddr_max);
|
|
if (imn < imx) {
|
|
__u32 t;
|
|
__be32 s;
|
|
if (pkt_dev->flags & F_IPDST_RND) {
|
|
|
|
t = random32() % (imx - imn) + imn;
|
|
s = htonl(t);
|
|
|
|
while (ipv4_is_loopback(s) ||
|
|
ipv4_is_multicast(s) ||
|
|
ipv4_is_lbcast(s) ||
|
|
ipv4_is_zeronet(s) ||
|
|
ipv4_is_local_multicast(s)) {
|
|
t = random32() % (imx - imn) + imn;
|
|
s = htonl(t);
|
|
}
|
|
pkt_dev->cur_daddr = s;
|
|
} else {
|
|
t = ntohl(pkt_dev->cur_daddr);
|
|
t++;
|
|
if (t > imx) {
|
|
t = imn;
|
|
}
|
|
pkt_dev->cur_daddr = htonl(t);
|
|
}
|
|
}
|
|
if (pkt_dev->cflows) {
|
|
pkt_dev->flows[flow].flags |= F_INIT;
|
|
pkt_dev->flows[flow].cur_daddr =
|
|
pkt_dev->cur_daddr;
|
|
#ifdef CONFIG_XFRM
|
|
if (pkt_dev->flags & F_IPSEC_ON)
|
|
get_ipsec_sa(pkt_dev, flow);
|
|
#endif
|
|
pkt_dev->nflows++;
|
|
}
|
|
}
|
|
} else { /* IPV6 * */
|
|
|
|
if (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) ;
|
|
else {
|
|
int i;
|
|
|
|
/* Only random destinations yet */
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
pkt_dev->cur_in6_daddr.s6_addr32[i] =
|
|
(((__force __be32)random32() |
|
|
pkt_dev->min_in6_daddr.s6_addr32[i]) &
|
|
pkt_dev->max_in6_daddr.s6_addr32[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
|
|
__u32 t;
|
|
if (pkt_dev->flags & F_TXSIZE_RND) {
|
|
t = random32() %
|
|
(pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
|
|
+ pkt_dev->min_pkt_size;
|
|
} else {
|
|
t = pkt_dev->cur_pkt_size + 1;
|
|
if (t > pkt_dev->max_pkt_size)
|
|
t = pkt_dev->min_pkt_size;
|
|
}
|
|
pkt_dev->cur_pkt_size = t;
|
|
}
|
|
|
|
set_cur_queue_map(pkt_dev);
|
|
|
|
pkt_dev->flows[flow].count++;
|
|
}
|
|
|
|
|
|
#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);
|
|
|
|
err = x->outer_mode->output(x, skb);
|
|
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 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->cflows; i++) {
|
|
struct xfrm_state *x = pkt_dev->flows[i].x;
|
|
if (x) {
|
|
xfrm_state_put(x);
|
|
pkt_dev->flows[i].x = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int process_ipsec(struct pktgen_dev *pkt_dev,
|
|
struct sk_buff *skb, __be16 protocol)
|
|
{
|
|
if (pkt_dev->flags & F_IPSEC_ON) {
|
|
struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
|
|
int nhead = 0;
|
|
if (x) {
|
|
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) {
|
|
pr_err("Error expanding ipsec packet %d\n",
|
|
ret);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/* ipsec is not expecting ll header */
|
|
skb_pull(skb, ETH_HLEN);
|
|
ret = pktgen_output_ipsec(skb, pkt_dev);
|
|
if (ret) {
|
|
pr_err("Error creating ipsec packet %d\n", ret);
|
|
goto err;
|
|
}
|
|
/* restore ll */
|
|
eth = (__u8 *) skb_push(skb, ETH_HLEN);
|
|
memcpy(eth, pkt_dev->hh, 12);
|
|
*(u16 *) ð[12] = protocol;
|
|
}
|
|
}
|
|
return 1;
|
|
err:
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < pkt_dev->nr_labels; i++)
|
|
*mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
|
|
|
|
mpls--;
|
|
*mpls |= MPLS_STACK_BOTTOM;
|
|
}
|
|
|
|
static inline __be16 build_tci(unsigned int id, unsigned int cfi,
|
|
unsigned int prio)
|
|
{
|
|
return htons(id | (cfi << 12) | (prio << 13));
|
|
}
|
|
|
|
static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
__u8 *eth;
|
|
struct udphdr *udph;
|
|
int datalen, iplen;
|
|
struct iphdr *iph;
|
|
struct pktgen_hdr *pgh = NULL;
|
|
__be16 protocol = htons(ETH_P_IP);
|
|
__be32 *mpls;
|
|
__be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
|
|
__be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
|
|
__be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
|
|
__be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
|
|
u16 queue_map;
|
|
|
|
if (pkt_dev->nr_labels)
|
|
protocol = htons(ETH_P_MPLS_UC);
|
|
|
|
if (pkt_dev->vlan_id != 0xffff)
|
|
protocol = htons(ETH_P_8021Q);
|
|
|
|
/* Update any of the values, used when we're incrementing various
|
|
* fields.
|
|
*/
|
|
queue_map = pkt_dev->cur_queue_map;
|
|
mod_cur_headers(pkt_dev);
|
|
|
|
datalen = (odev->hard_header_len + 16) & ~0xf;
|
|
|
|
if (pkt_dev->flags & F_NODE) {
|
|
int node;
|
|
|
|
if (pkt_dev->node >= 0)
|
|
node = pkt_dev->node;
|
|
else
|
|
node = numa_node_id();
|
|
|
|
skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
|
|
+ datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
|
|
if (likely(skb)) {
|
|
skb_reserve(skb, NET_SKB_PAD);
|
|
skb->dev = odev;
|
|
}
|
|
}
|
|
else
|
|
skb = __netdev_alloc_skb(odev,
|
|
pkt_dev->cur_pkt_size + 64
|
|
+ datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
|
|
|
|
if (!skb) {
|
|
sprintf(pkt_dev->result, "No memory");
|
|
return NULL;
|
|
}
|
|
|
|
skb_reserve(skb, datalen);
|
|
|
|
/* Reserve for ethernet and IP header */
|
|
eth = (__u8 *) skb_push(skb, 14);
|
|
mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
|
|
if (pkt_dev->nr_labels)
|
|
mpls_push(mpls, pkt_dev);
|
|
|
|
if (pkt_dev->vlan_id != 0xffff) {
|
|
if (pkt_dev->svlan_id != 0xffff) {
|
|
svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*svlan_tci = build_tci(pkt_dev->svlan_id,
|
|
pkt_dev->svlan_cfi,
|
|
pkt_dev->svlan_p);
|
|
svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*svlan_encapsulated_proto = htons(ETH_P_8021Q);
|
|
}
|
|
vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*vlan_tci = build_tci(pkt_dev->vlan_id,
|
|
pkt_dev->vlan_cfi,
|
|
pkt_dev->vlan_p);
|
|
vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*vlan_encapsulated_proto = htons(ETH_P_IP);
|
|
}
|
|
|
|
skb->network_header = skb->tail;
|
|
skb->transport_header = skb->network_header + sizeof(struct iphdr);
|
|
skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
|
|
skb_set_queue_mapping(skb, queue_map);
|
|
iph = ip_hdr(skb);
|
|
udph = udp_hdr(skb);
|
|
|
|
memcpy(eth, pkt_dev->hh, 12);
|
|
*(__be16 *) & eth[12] = protocol;
|
|
|
|
/* Eth + IPh + UDPh + mpls */
|
|
datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
|
|
pkt_dev->pkt_overhead;
|
|
if (datalen < sizeof(struct pktgen_hdr))
|
|
datalen = sizeof(struct pktgen_hdr);
|
|
|
|
udph->source = htons(pkt_dev->cur_udp_src);
|
|
udph->dest = htons(pkt_dev->cur_udp_dst);
|
|
udph->len = htons(datalen + 8); /* DATA + udphdr */
|
|
udph->check = 0; /* No checksum */
|
|
|
|
iph->ihl = 5;
|
|
iph->version = 4;
|
|
iph->ttl = 32;
|
|
iph->tos = pkt_dev->tos;
|
|
iph->protocol = IPPROTO_UDP; /* UDP */
|
|
iph->saddr = pkt_dev->cur_saddr;
|
|
iph->daddr = pkt_dev->cur_daddr;
|
|
iph->id = htons(pkt_dev->ip_id);
|
|
pkt_dev->ip_id++;
|
|
iph->frag_off = 0;
|
|
iplen = 20 + 8 + datalen;
|
|
iph->tot_len = htons(iplen);
|
|
iph->check = 0;
|
|
iph->check = ip_fast_csum((void *)iph, iph->ihl);
|
|
skb->protocol = protocol;
|
|
skb->mac_header = (skb->network_header - ETH_HLEN -
|
|
pkt_dev->pkt_overhead);
|
|
skb->dev = odev;
|
|
skb->pkt_type = PACKET_HOST;
|
|
|
|
if (pkt_dev->nfrags <= 0) {
|
|
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
|
|
memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
|
|
} else {
|
|
int frags = pkt_dev->nfrags;
|
|
int i, len;
|
|
|
|
pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
|
|
|
|
if (frags > MAX_SKB_FRAGS)
|
|
frags = MAX_SKB_FRAGS;
|
|
if (datalen > frags * PAGE_SIZE) {
|
|
len = datalen - frags * PAGE_SIZE;
|
|
memset(skb_put(skb, len), 0, len);
|
|
datalen = frags * PAGE_SIZE;
|
|
}
|
|
|
|
i = 0;
|
|
while (datalen > 0) {
|
|
struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
|
|
skb_shinfo(skb)->frags[i].page = page;
|
|
skb_shinfo(skb)->frags[i].page_offset = 0;
|
|
skb_shinfo(skb)->frags[i].size =
|
|
(datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
|
|
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;
|
|
|
|
skb_shinfo(skb)->frags[i] =
|
|
skb_shinfo(skb)->frags[i - 1];
|
|
get_page(skb_shinfo(skb)->frags[i].page);
|
|
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;
|
|
skb_shinfo(skb)->frags[i].size = rem;
|
|
i++;
|
|
skb_shinfo(skb)->nr_frags = i;
|
|
}
|
|
}
|
|
|
|
/* 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(×tamp);
|
|
pgh->tv_sec = htonl(timestamp.tv_sec);
|
|
pgh->tv_usec = htonl(timestamp.tv_usec);
|
|
}
|
|
|
|
#ifdef CONFIG_XFRM
|
|
if (!process_ipsec(pkt_dev, skb, protocol))
|
|
return NULL;
|
|
#endif
|
|
|
|
return skb;
|
|
}
|
|
|
|
/*
|
|
* scan_ip6, fmt_ip taken from dietlibc-0.21
|
|
* Author Felix von Leitner <felix-dietlibc@fefe.de>
|
|
*
|
|
* Slightly modified for kernel.
|
|
* Should be candidate for net/ipv4/utils.c
|
|
* --ro
|
|
*/
|
|
|
|
static unsigned int scan_ip6(const char *s, char ip[16])
|
|
{
|
|
unsigned int i;
|
|
unsigned int len = 0;
|
|
unsigned long u;
|
|
char suffix[16];
|
|
unsigned int prefixlen = 0;
|
|
unsigned int suffixlen = 0;
|
|
__be32 tmp;
|
|
char *pos;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
ip[i] = 0;
|
|
|
|
for (;;) {
|
|
if (*s == ':') {
|
|
len++;
|
|
if (s[1] == ':') { /* Found "::", skip to part 2 */
|
|
s += 2;
|
|
len++;
|
|
break;
|
|
}
|
|
s++;
|
|
}
|
|
|
|
u = simple_strtoul(s, &pos, 16);
|
|
i = pos - s;
|
|
if (!i)
|
|
return 0;
|
|
if (prefixlen == 12 && s[i] == '.') {
|
|
|
|
/* the last 4 bytes may be written as IPv4 address */
|
|
|
|
tmp = in_aton(s);
|
|
memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
|
|
return i + len;
|
|
}
|
|
ip[prefixlen++] = (u >> 8);
|
|
ip[prefixlen++] = (u & 255);
|
|
s += i;
|
|
len += i;
|
|
if (prefixlen == 16)
|
|
return len;
|
|
}
|
|
|
|
/* part 2, after "::" */
|
|
for (;;) {
|
|
if (*s == ':') {
|
|
if (suffixlen == 0)
|
|
break;
|
|
s++;
|
|
len++;
|
|
} else if (suffixlen != 0)
|
|
break;
|
|
|
|
u = simple_strtol(s, &pos, 16);
|
|
i = pos - s;
|
|
if (!i) {
|
|
if (*s)
|
|
len--;
|
|
break;
|
|
}
|
|
if (suffixlen + prefixlen <= 12 && s[i] == '.') {
|
|
tmp = in_aton(s);
|
|
memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
|
|
sizeof(tmp));
|
|
suffixlen += 4;
|
|
len += strlen(s);
|
|
break;
|
|
}
|
|
suffix[suffixlen++] = (u >> 8);
|
|
suffix[suffixlen++] = (u & 255);
|
|
s += i;
|
|
len += i;
|
|
if (prefixlen + suffixlen == 16)
|
|
break;
|
|
}
|
|
for (i = 0; i < suffixlen; i++)
|
|
ip[16 - suffixlen + i] = suffix[i];
|
|
return len;
|
|
}
|
|
|
|
static char tohex(char hexdigit)
|
|
{
|
|
return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static unsigned int fmt_ip6(char *s, const char ip[16])
|
|
{
|
|
unsigned int len;
|
|
unsigned int i;
|
|
unsigned int temp;
|
|
unsigned int compressing;
|
|
int j;
|
|
|
|
len = 0;
|
|
compressing = 0;
|
|
for (j = 0; j < 16; j += 2) {
|
|
|
|
#ifdef V4MAPPEDPREFIX
|
|
if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
|
|
inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
|
|
temp = strlen(s);
|
|
return len + temp;
|
|
}
|
|
#endif
|
|
temp = ((unsigned long)(unsigned char)ip[j] << 8) +
|
|
(unsigned long)(unsigned char)ip[j + 1];
|
|
if (temp == 0) {
|
|
if (!compressing) {
|
|
compressing = 1;
|
|
if (j == 0) {
|
|
*s++ = ':';
|
|
++len;
|
|
}
|
|
}
|
|
} else {
|
|
if (compressing) {
|
|
compressing = 0;
|
|
*s++ = ':';
|
|
++len;
|
|
}
|
|
i = fmt_xlong(s, temp);
|
|
len += i;
|
|
s += i;
|
|
if (j < 14) {
|
|
*s++ = ':';
|
|
++len;
|
|
}
|
|
}
|
|
}
|
|
if (compressing) {
|
|
*s++ = ':';
|
|
++len;
|
|
}
|
|
*s = 0;
|
|
return len;
|
|
}
|
|
|
|
static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
__u8 *eth;
|
|
struct udphdr *udph;
|
|
int datalen;
|
|
struct ipv6hdr *iph;
|
|
struct pktgen_hdr *pgh = NULL;
|
|
__be16 protocol = htons(ETH_P_IPV6);
|
|
__be32 *mpls;
|
|
__be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
|
|
__be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
|
|
__be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
|
|
__be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
|
|
u16 queue_map;
|
|
|
|
if (pkt_dev->nr_labels)
|
|
protocol = htons(ETH_P_MPLS_UC);
|
|
|
|
if (pkt_dev->vlan_id != 0xffff)
|
|
protocol = htons(ETH_P_8021Q);
|
|
|
|
/* Update any of the values, used when we're incrementing various
|
|
* fields.
|
|
*/
|
|
queue_map = pkt_dev->cur_queue_map;
|
|
mod_cur_headers(pkt_dev);
|
|
|
|
skb = __netdev_alloc_skb(odev,
|
|
pkt_dev->cur_pkt_size + 64
|
|
+ 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
|
|
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);
|
|
mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
|
|
if (pkt_dev->nr_labels)
|
|
mpls_push(mpls, pkt_dev);
|
|
|
|
if (pkt_dev->vlan_id != 0xffff) {
|
|
if (pkt_dev->svlan_id != 0xffff) {
|
|
svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*svlan_tci = build_tci(pkt_dev->svlan_id,
|
|
pkt_dev->svlan_cfi,
|
|
pkt_dev->svlan_p);
|
|
svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*svlan_encapsulated_proto = htons(ETH_P_8021Q);
|
|
}
|
|
vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*vlan_tci = build_tci(pkt_dev->vlan_id,
|
|
pkt_dev->vlan_cfi,
|
|
pkt_dev->vlan_p);
|
|
vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
|
|
*vlan_encapsulated_proto = htons(ETH_P_IPV6);
|
|
}
|
|
|
|
skb->network_header = skb->tail;
|
|
skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
|
|
skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
|
|
skb_set_queue_mapping(skb, queue_map);
|
|
iph = ipv6_hdr(skb);
|
|
udph = udp_hdr(skb);
|
|
|
|
memcpy(eth, pkt_dev->hh, 12);
|
|
*(__be16 *) ð[12] = protocol;
|
|
|
|
/* Eth + IPh + UDPh + mpls */
|
|
datalen = pkt_dev->cur_pkt_size - 14 -
|
|
sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
|
|
pkt_dev->pkt_overhead;
|
|
|
|
if (datalen < sizeof(struct pktgen_hdr)) {
|
|
datalen = sizeof(struct pktgen_hdr);
|
|
if (net_ratelimit())
|
|
pr_info("increased datalen to %d\n", datalen);
|
|
}
|
|
|
|
udph->source = htons(pkt_dev->cur_udp_src);
|
|
udph->dest = htons(pkt_dev->cur_udp_dst);
|
|
udph->len = htons(datalen + sizeof(struct udphdr));
|
|
udph->check = 0; /* No checksum */
|
|
|
|
*(__be32 *) iph = htonl(0x60000000); /* Version + flow */
|
|
|
|
if (pkt_dev->traffic_class) {
|
|
/* Version + traffic class + flow (0) */
|
|
*(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
|
|
}
|
|
|
|
iph->hop_limit = 32;
|
|
|
|
iph->payload_len = htons(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);
|
|
|
|
skb->mac_header = (skb->network_header - ETH_HLEN -
|
|
pkt_dev->pkt_overhead);
|
|
skb->protocol = protocol;
|
|
skb->dev = odev;
|
|
skb->pkt_type = PACKET_HOST;
|
|
|
|
if (pkt_dev->nfrags <= 0)
|
|
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
|
|
else {
|
|
int frags = pkt_dev->nfrags;
|
|
int i;
|
|
|
|
pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
|
|
|
|
if (frags > MAX_SKB_FRAGS)
|
|
frags = MAX_SKB_FRAGS;
|
|
if (datalen > frags * PAGE_SIZE) {
|
|
skb_put(skb, datalen - frags * PAGE_SIZE);
|
|
datalen = frags * PAGE_SIZE;
|
|
}
|
|
|
|
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 =
|
|
(datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
|
|
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;
|
|
|
|
skb_shinfo(skb)->frags[i] =
|
|
skb_shinfo(skb)->frags[i - 1];
|
|
get_page(skb_shinfo(skb)->frags[i].page);
|
|
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;
|
|
skb_shinfo(skb)->frags[i].size = rem;
|
|
i++;
|
|
skb_shinfo(skb)->nr_frags = i;
|
|
}
|
|
}
|
|
|
|
/* Stamp the time, and sequence number,
|
|
* convert them to network byte order
|
|
* should we update cloned packets too ?
|
|
*/
|
|
if (pgh) {
|
|
struct timeval timestamp;
|
|
|
|
pgh->pgh_magic = htonl(PKTGEN_MAGIC);
|
|
pgh->seq_num = htonl(pkt_dev->seq_num);
|
|
|
|
do_gettimeofday(×tamp);
|
|
pgh->tv_sec = htonl(timestamp.tv_sec);
|
|
pgh->tv_usec = htonl(timestamp.tv_usec);
|
|
}
|
|
/* pkt_dev->seq_num++; FF: you really mean this? */
|
|
|
|
return skb;
|
|
}
|
|
|
|
static struct sk_buff *fill_packet(struct net_device *odev,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
if (pkt_dev->flags & F_IPV6)
|
|
return fill_packet_ipv6(odev, pkt_dev);
|
|
else
|
|
return fill_packet_ipv4(odev, pkt_dev);
|
|
}
|
|
|
|
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
|
|
{
|
|
pkt_dev->seq_num = 1;
|
|
pkt_dev->idle_acc = 0;
|
|
pkt_dev->sofar = 0;
|
|
pkt_dev->tx_bytes = 0;
|
|
pkt_dev->errors = 0;
|
|
}
|
|
|
|
/* Set up structure for sending pkts, clear counters */
|
|
|
|
static void pktgen_run(struct pktgen_thread *t)
|
|
{
|
|
struct pktgen_dev *pkt_dev;
|
|
int started = 0;
|
|
|
|
func_enter();
|
|
|
|
if_lock(t);
|
|
list_for_each_entry(pkt_dev, &t->if_list, list) {
|
|
|
|
/*
|
|
* setup odev and create initial packet.
|
|
*/
|
|
pktgen_setup_inject(pkt_dev);
|
|
|
|
if (pkt_dev->odev) {
|
|
pktgen_clear_counters(pkt_dev);
|
|
pkt_dev->running = 1; /* Cranke yeself! */
|
|
pkt_dev->skb = NULL;
|
|
pkt_dev->started_at =
|
|
pkt_dev->next_tx = ktime_now();
|
|
|
|
set_pkt_overhead(pkt_dev);
|
|
|
|
strcpy(pkt_dev->result, "Starting");
|
|
started++;
|
|
} else
|
|
strcpy(pkt_dev->result, "Error starting");
|
|
}
|
|
if_unlock(t);
|
|
if (started)
|
|
t->control &= ~(T_STOP);
|
|
}
|
|
|
|
static void pktgen_stop_all_threads_ifs(void)
|
|
{
|
|
struct pktgen_thread *t;
|
|
|
|
func_enter();
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
list_for_each_entry(t, &pktgen_threads, th_list)
|
|
t->control |= T_STOP;
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
}
|
|
|
|
static int thread_is_running(const struct pktgen_thread *t)
|
|
{
|
|
const struct pktgen_dev *pkt_dev;
|
|
|
|
list_for_each_entry(pkt_dev, &t->if_list, list)
|
|
if (pkt_dev->running)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int pktgen_wait_thread_run(struct pktgen_thread *t)
|
|
{
|
|
if_lock(t);
|
|
|
|
while (thread_is_running(t)) {
|
|
|
|
if_unlock(t);
|
|
|
|
msleep_interruptible(100);
|
|
|
|
if (signal_pending(current))
|
|
goto signal;
|
|
if_lock(t);
|
|
}
|
|
if_unlock(t);
|
|
return 1;
|
|
signal:
|
|
return 0;
|
|
}
|
|
|
|
static int pktgen_wait_all_threads_run(void)
|
|
{
|
|
struct pktgen_thread *t;
|
|
int sig = 1;
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
list_for_each_entry(t, &pktgen_threads, th_list) {
|
|
sig = pktgen_wait_thread_run(t);
|
|
if (sig == 0)
|
|
break;
|
|
}
|
|
|
|
if (sig == 0)
|
|
list_for_each_entry(t, &pktgen_threads, th_list)
|
|
t->control |= (T_STOP);
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
return sig;
|
|
}
|
|
|
|
static void pktgen_run_all_threads(void)
|
|
{
|
|
struct pktgen_thread *t;
|
|
|
|
func_enter();
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
list_for_each_entry(t, &pktgen_threads, th_list)
|
|
t->control |= (T_RUN);
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
|
|
/* Propagate thread->control */
|
|
schedule_timeout_interruptible(msecs_to_jiffies(125));
|
|
|
|
pktgen_wait_all_threads_run();
|
|
}
|
|
|
|
static void pktgen_reset_all_threads(void)
|
|
{
|
|
struct pktgen_thread *t;
|
|
|
|
func_enter();
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
list_for_each_entry(t, &pktgen_threads, th_list)
|
|
t->control |= (T_REMDEVALL);
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
|
|
/* Propagate thread->control */
|
|
schedule_timeout_interruptible(msecs_to_jiffies(125));
|
|
|
|
pktgen_wait_all_threads_run();
|
|
}
|
|
|
|
static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
|
|
{
|
|
__u64 bps, mbps, pps;
|
|
char *p = pkt_dev->result;
|
|
ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
|
|
pkt_dev->started_at);
|
|
ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
|
|
|
|
p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
|
|
(unsigned long long)ktime_to_us(elapsed),
|
|
(unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
|
|
(unsigned long long)ktime_to_us(idle),
|
|
(unsigned long long)pkt_dev->sofar,
|
|
pkt_dev->cur_pkt_size, nr_frags);
|
|
|
|
pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
|
|
ktime_to_ns(elapsed));
|
|
|
|
bps = pps * 8 * pkt_dev->cur_pkt_size;
|
|
|
|
mbps = bps;
|
|
do_div(mbps, 1000000);
|
|
p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
|
|
(unsigned long long)pps,
|
|
(unsigned long long)mbps,
|
|
(unsigned long long)bps,
|
|
(unsigned long long)pkt_dev->errors);
|
|
}
|
|
|
|
/* Set stopped-at timer, remove from running list, do counters & statistics */
|
|
static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
|
|
{
|
|
int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
|
|
|
|
if (!pkt_dev->running) {
|
|
pr_warning("interface: %s is already stopped\n",
|
|
pkt_dev->odevname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
kfree_skb(pkt_dev->skb);
|
|
pkt_dev->skb = NULL;
|
|
pkt_dev->stopped_at = ktime_now();
|
|
pkt_dev->running = 0;
|
|
|
|
show_results(pkt_dev, nr_frags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
|
|
{
|
|
struct pktgen_dev *pkt_dev, *best = NULL;
|
|
|
|
if_lock(t);
|
|
|
|
list_for_each_entry(pkt_dev, &t->if_list, list) {
|
|
if (!pkt_dev->running)
|
|
continue;
|
|
if (best == NULL)
|
|
best = pkt_dev;
|
|
else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
|
|
best = pkt_dev;
|
|
}
|
|
if_unlock(t);
|
|
return best;
|
|
}
|
|
|
|
static void pktgen_stop(struct pktgen_thread *t)
|
|
{
|
|
struct pktgen_dev *pkt_dev;
|
|
|
|
func_enter();
|
|
|
|
if_lock(t);
|
|
|
|
list_for_each_entry(pkt_dev, &t->if_list, list) {
|
|
pktgen_stop_device(pkt_dev);
|
|
}
|
|
|
|
if_unlock(t);
|
|
}
|
|
|
|
/*
|
|
* one of our devices needs to be removed - find it
|
|
* and remove it
|
|
*/
|
|
static void pktgen_rem_one_if(struct pktgen_thread *t)
|
|
{
|
|
struct list_head *q, *n;
|
|
struct pktgen_dev *cur;
|
|
|
|
func_enter();
|
|
|
|
if_lock(t);
|
|
|
|
list_for_each_safe(q, n, &t->if_list) {
|
|
cur = list_entry(q, struct pktgen_dev, list);
|
|
|
|
if (!cur->removal_mark)
|
|
continue;
|
|
|
|
kfree_skb(cur->skb);
|
|
cur->skb = NULL;
|
|
|
|
pktgen_remove_device(t, cur);
|
|
|
|
break;
|
|
}
|
|
|
|
if_unlock(t);
|
|
}
|
|
|
|
static void pktgen_rem_all_ifs(struct pktgen_thread *t)
|
|
{
|
|
struct list_head *q, *n;
|
|
struct pktgen_dev *cur;
|
|
|
|
func_enter();
|
|
|
|
/* Remove all devices, free mem */
|
|
|
|
if_lock(t);
|
|
|
|
list_for_each_safe(q, n, &t->if_list) {
|
|
cur = list_entry(q, struct pktgen_dev, list);
|
|
|
|
kfree_skb(cur->skb);
|
|
cur->skb = NULL;
|
|
|
|
pktgen_remove_device(t, cur);
|
|
}
|
|
|
|
if_unlock(t);
|
|
}
|
|
|
|
static void pktgen_rem_thread(struct pktgen_thread *t)
|
|
{
|
|
/* Remove from the thread list */
|
|
|
|
remove_proc_entry(t->tsk->comm, pg_proc_dir);
|
|
|
|
mutex_lock(&pktgen_thread_lock);
|
|
|
|
list_del(&t->th_list);
|
|
|
|
mutex_unlock(&pktgen_thread_lock);
|
|
}
|
|
|
|
static void pktgen_resched(struct pktgen_dev *pkt_dev)
|
|
{
|
|
ktime_t idle_start = ktime_now();
|
|
schedule();
|
|
pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
|
|
}
|
|
|
|
static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
|
|
{
|
|
ktime_t idle_start = ktime_now();
|
|
|
|
while (atomic_read(&(pkt_dev->skb->users)) != 1) {
|
|
if (signal_pending(current))
|
|
break;
|
|
|
|
if (need_resched())
|
|
pktgen_resched(pkt_dev);
|
|
else
|
|
cpu_relax();
|
|
}
|
|
pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
|
|
}
|
|
|
|
static void pktgen_xmit(struct pktgen_dev *pkt_dev)
|
|
{
|
|
struct net_device *odev = pkt_dev->odev;
|
|
netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
|
|
= odev->netdev_ops->ndo_start_xmit;
|
|
struct netdev_queue *txq;
|
|
u16 queue_map;
|
|
int ret;
|
|
|
|
/* If device is offline, then don't send */
|
|
if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
|
|
pktgen_stop_device(pkt_dev);
|
|
return;
|
|
}
|
|
|
|
/* This is max DELAY, this has special meaning of
|
|
* "never transmit"
|
|
*/
|
|
if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
|
|
pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
|
|
return;
|
|
}
|
|
|
|
/* If no skb or clone count exhausted then get new one */
|
|
if (!pkt_dev->skb || (pkt_dev->last_ok &&
|
|
++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
|
|
/* build a new pkt */
|
|
kfree_skb(pkt_dev->skb);
|
|
|
|
pkt_dev->skb = fill_packet(odev, pkt_dev);
|
|
if (pkt_dev->skb == NULL) {
|
|
pr_err("ERROR: couldn't allocate skb in fill_packet\n");
|
|
schedule();
|
|
pkt_dev->clone_count--; /* back out increment, OOM */
|
|
return;
|
|
}
|
|
pkt_dev->last_pkt_size = pkt_dev->skb->len;
|
|
pkt_dev->allocated_skbs++;
|
|
pkt_dev->clone_count = 0; /* reset counter */
|
|
}
|
|
|
|
if (pkt_dev->delay && pkt_dev->last_ok)
|
|
spin(pkt_dev, pkt_dev->next_tx);
|
|
|
|
queue_map = skb_get_queue_mapping(pkt_dev->skb);
|
|
txq = netdev_get_tx_queue(odev, queue_map);
|
|
|
|
__netif_tx_lock_bh(txq);
|
|
|
|
if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
|
|
ret = NETDEV_TX_BUSY;
|
|
pkt_dev->last_ok = 0;
|
|
goto unlock;
|
|
}
|
|
atomic_inc(&(pkt_dev->skb->users));
|
|
ret = (*xmit)(pkt_dev->skb, odev);
|
|
|
|
switch (ret) {
|
|
case NETDEV_TX_OK:
|
|
txq_trans_update(txq);
|
|
pkt_dev->last_ok = 1;
|
|
pkt_dev->sofar++;
|
|
pkt_dev->seq_num++;
|
|
pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
|
|
break;
|
|
case NET_XMIT_DROP:
|
|
case NET_XMIT_CN:
|
|
case NET_XMIT_POLICED:
|
|
/* skb has been consumed */
|
|
pkt_dev->errors++;
|
|
break;
|
|
default: /* Drivers are not supposed to return other values! */
|
|
if (net_ratelimit())
|
|
pr_info("pktgen: %s xmit error: %d\n",
|
|
pkt_dev->odevname, ret);
|
|
pkt_dev->errors++;
|
|
/* fallthru */
|
|
case NETDEV_TX_LOCKED:
|
|
case NETDEV_TX_BUSY:
|
|
/* Retry it next time */
|
|
atomic_dec(&(pkt_dev->skb->users));
|
|
pkt_dev->last_ok = 0;
|
|
}
|
|
unlock:
|
|
__netif_tx_unlock_bh(txq);
|
|
|
|
/* If pkt_dev->count is zero, then run forever */
|
|
if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
|
|
pktgen_wait_for_skb(pkt_dev);
|
|
|
|
/* Done with this */
|
|
pktgen_stop_device(pkt_dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Main loop of the thread goes here
|
|
*/
|
|
|
|
static int pktgen_thread_worker(void *arg)
|
|
{
|
|
DEFINE_WAIT(wait);
|
|
struct pktgen_thread *t = arg;
|
|
struct pktgen_dev *pkt_dev = NULL;
|
|
int cpu = t->cpu;
|
|
|
|
BUG_ON(smp_processor_id() != cpu);
|
|
|
|
init_waitqueue_head(&t->queue);
|
|
complete(&t->start_done);
|
|
|
|
pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
|
|
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
|
|
set_freezable();
|
|
|
|
while (!kthread_should_stop()) {
|
|
pkt_dev = next_to_run(t);
|
|
|
|
if (unlikely(!pkt_dev && t->control == 0)) {
|
|
wait_event_interruptible_timeout(t->queue,
|
|
t->control != 0,
|
|
HZ/10);
|
|
try_to_freeze();
|
|
continue;
|
|
}
|
|
|
|
__set_current_state(TASK_RUNNING);
|
|
|
|
if (likely(pkt_dev)) {
|
|
pktgen_xmit(pkt_dev);
|
|
|
|
if (need_resched())
|
|
pktgen_resched(pkt_dev);
|
|
else
|
|
cpu_relax();
|
|
}
|
|
|
|
if (t->control & T_STOP) {
|
|
pktgen_stop(t);
|
|
t->control &= ~(T_STOP);
|
|
}
|
|
|
|
if (t->control & T_RUN) {
|
|
pktgen_run(t);
|
|
t->control &= ~(T_RUN);
|
|
}
|
|
|
|
if (t->control & T_REMDEVALL) {
|
|
pktgen_rem_all_ifs(t);
|
|
t->control &= ~(T_REMDEVALL);
|
|
}
|
|
|
|
if (t->control & T_REMDEV) {
|
|
pktgen_rem_one_if(t);
|
|
t->control &= ~(T_REMDEV);
|
|
}
|
|
|
|
try_to_freeze();
|
|
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
}
|
|
|
|
pr_debug("%s stopping all device\n", t->tsk->comm);
|
|
pktgen_stop(t);
|
|
|
|
pr_debug("%s removing all device\n", t->tsk->comm);
|
|
pktgen_rem_all_ifs(t);
|
|
|
|
pr_debug("%s removing thread\n", t->tsk->comm);
|
|
pktgen_rem_thread(t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
|
|
const char *ifname, bool exact)
|
|
{
|
|
struct pktgen_dev *p, *pkt_dev = NULL;
|
|
size_t len = strlen(ifname);
|
|
|
|
if_lock(t);
|
|
list_for_each_entry(p, &t->if_list, list)
|
|
if (strncmp(p->odevname, ifname, len) == 0) {
|
|
if (p->odevname[len]) {
|
|
if (exact || p->odevname[len] != '@')
|
|
continue;
|
|
}
|
|
pkt_dev = p;
|
|
break;
|
|
}
|
|
|
|
if_unlock(t);
|
|
pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
|
|
return pkt_dev;
|
|
}
|
|
|
|
/*
|
|
* Adds a dev at front of if_list.
|
|
*/
|
|
|
|
static int add_dev_to_thread(struct pktgen_thread *t,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
int rv = 0;
|
|
|
|
if_lock(t);
|
|
|
|
if (pkt_dev->pg_thread) {
|
|
pr_err("ERROR: already assigned to a thread\n");
|
|
rv = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
list_add(&pkt_dev->list, &t->if_list);
|
|
pkt_dev->pg_thread = t;
|
|
pkt_dev->running = 0;
|
|
|
|
out:
|
|
if_unlock(t);
|
|
return rv;
|
|
}
|
|
|
|
/* Called under thread lock */
|
|
|
|
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
|
|
{
|
|
struct pktgen_dev *pkt_dev;
|
|
int err;
|
|
int node = cpu_to_node(t->cpu);
|
|
|
|
/* We don't allow a device to be on several threads */
|
|
|
|
pkt_dev = __pktgen_NN_threads(ifname, FIND);
|
|
if (pkt_dev) {
|
|
pr_err("ERROR: interface already used\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
|
|
if (!pkt_dev)
|
|
return -ENOMEM;
|
|
|
|
strcpy(pkt_dev->odevname, ifname);
|
|
pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
|
|
node);
|
|
if (pkt_dev->flows == NULL) {
|
|
kfree(pkt_dev);
|
|
return -ENOMEM;
|
|
}
|
|
memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
|
|
|
|
pkt_dev->removal_mark = 0;
|
|
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 = pg_delay_d;
|
|
pkt_dev->count = pg_count_d;
|
|
pkt_dev->sofar = 0;
|
|
pkt_dev->udp_src_min = 9; /* sink port */
|
|
pkt_dev->udp_src_max = 9;
|
|
pkt_dev->udp_dst_min = 9;
|
|
pkt_dev->udp_dst_max = 9;
|
|
|
|
pkt_dev->vlan_p = 0;
|
|
pkt_dev->vlan_cfi = 0;
|
|
pkt_dev->vlan_id = 0xffff;
|
|
pkt_dev->svlan_p = 0;
|
|
pkt_dev->svlan_cfi = 0;
|
|
pkt_dev->svlan_id = 0xffff;
|
|
pkt_dev->node = -1;
|
|
|
|
err = pktgen_setup_dev(pkt_dev, ifname);
|
|
if (err)
|
|
goto out1;
|
|
|
|
pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
|
|
&pktgen_if_fops, pkt_dev);
|
|
if (!pkt_dev->entry) {
|
|
pr_err("cannot create %s/%s procfs entry\n",
|
|
PG_PROC_DIR, ifname);
|
|
err = -EINVAL;
|
|
goto out2;
|
|
}
|
|
#ifdef CONFIG_XFRM
|
|
pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
|
|
pkt_dev->ipsproto = IPPROTO_ESP;
|
|
#endif
|
|
|
|
return add_dev_to_thread(t, pkt_dev);
|
|
out2:
|
|
dev_put(pkt_dev->odev);
|
|
out1:
|
|
#ifdef CONFIG_XFRM
|
|
free_SAs(pkt_dev);
|
|
#endif
|
|
vfree(pkt_dev->flows);
|
|
kfree(pkt_dev);
|
|
return err;
|
|
}
|
|
|
|
static int __init pktgen_create_thread(int cpu)
|
|
{
|
|
struct pktgen_thread *t;
|
|
struct proc_dir_entry *pe;
|
|
struct task_struct *p;
|
|
|
|
t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
|
|
cpu_to_node(cpu));
|
|
if (!t) {
|
|
pr_err("ERROR: out of memory, can't create new thread\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
spin_lock_init(&t->if_lock);
|
|
t->cpu = cpu;
|
|
|
|
INIT_LIST_HEAD(&t->if_list);
|
|
|
|
list_add_tail(&t->th_list, &pktgen_threads);
|
|
init_completion(&t->start_done);
|
|
|
|
p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
|
|
if (IS_ERR(p)) {
|
|
pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
|
|
list_del(&t->th_list);
|
|
kfree(t);
|
|
return PTR_ERR(p);
|
|
}
|
|
kthread_bind(p, cpu);
|
|
t->tsk = p;
|
|
|
|
pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
|
|
&pktgen_thread_fops, t);
|
|
if (!pe) {
|
|
pr_err("cannot create %s/%s procfs entry\n",
|
|
PG_PROC_DIR, t->tsk->comm);
|
|
kthread_stop(p);
|
|
list_del(&t->th_list);
|
|
kfree(t);
|
|
return -EINVAL;
|
|
}
|
|
|
|
wake_up_process(p);
|
|
wait_for_completion(&t->start_done);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Removes a device from the thread if_list.
|
|
*/
|
|
static void _rem_dev_from_if_list(struct pktgen_thread *t,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
struct list_head *q, *n;
|
|
struct pktgen_dev *p;
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static int pktgen_remove_device(struct pktgen_thread *t,
|
|
struct pktgen_dev *pkt_dev)
|
|
{
|
|
|
|
pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
|
|
|
|
if (pkt_dev->running) {
|
|
pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
|
|
pktgen_stop_device(pkt_dev);
|
|
}
|
|
|
|
/* Dis-associate from the interface */
|
|
|
|
if (pkt_dev->odev) {
|
|
dev_put(pkt_dev->odev);
|
|
pkt_dev->odev = NULL;
|
|
}
|
|
|
|
/* And update the thread if_list */
|
|
|
|
_rem_dev_from_if_list(t, pkt_dev);
|
|
|
|
if (pkt_dev->entry)
|
|
remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
|
|
|
|
#ifdef CONFIG_XFRM
|
|
free_SAs(pkt_dev);
|
|
#endif
|
|
vfree(pkt_dev->flows);
|
|
kfree(pkt_dev);
|
|
return 0;
|
|
}
|
|
|
|
static int __init pg_init(void)
|
|
{
|
|
int cpu;
|
|
struct proc_dir_entry *pe;
|
|
|
|
pr_info("%s", version);
|
|
|
|
pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
|
|
if (!pg_proc_dir)
|
|
return -ENODEV;
|
|
|
|
pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
|
|
if (pe == NULL) {
|
|
pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
|
|
proc_net_remove(&init_net, PG_PROC_DIR);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Register us to receive netdevice events */
|
|
register_netdevice_notifier(&pktgen_notifier_block);
|
|
|
|
for_each_online_cpu(cpu) {
|
|
int err;
|
|
|
|
err = pktgen_create_thread(cpu);
|
|
if (err)
|
|
pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
|
|
cpu, err);
|
|
}
|
|
|
|
if (list_empty(&pktgen_threads)) {
|
|
pr_err("ERROR: Initialization failed for all threads\n");
|
|
unregister_netdevice_notifier(&pktgen_notifier_block);
|
|
remove_proc_entry(PGCTRL, pg_proc_dir);
|
|
proc_net_remove(&init_net, PG_PROC_DIR);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit pg_cleanup(void)
|
|
{
|
|
struct pktgen_thread *t;
|
|
struct list_head *q, *n;
|
|
|
|
/* Stop all interfaces & threads */
|
|
|
|
list_for_each_safe(q, n, &pktgen_threads) {
|
|
t = list_entry(q, struct pktgen_thread, th_list);
|
|
kthread_stop(t->tsk);
|
|
kfree(t);
|
|
}
|
|
|
|
/* Un-register us from receiving netdevice events */
|
|
unregister_netdevice_notifier(&pktgen_notifier_block);
|
|
|
|
/* Clean up proc file system */
|
|
remove_proc_entry(PGCTRL, pg_proc_dir);
|
|
proc_net_remove(&init_net, PG_PROC_DIR);
|
|
}
|
|
|
|
module_init(pg_init);
|
|
module_exit(pg_cleanup);
|
|
|
|
MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
|
|
MODULE_DESCRIPTION("Packet Generator tool");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(VERSION);
|
|
module_param(pg_count_d, int, 0);
|
|
MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
|
|
module_param(pg_delay_d, int, 0);
|
|
MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
|
|
module_param(pg_clone_skb_d, int, 0);
|
|
MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
|
|
module_param(debug, int, 0);
|
|
MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
|