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1278 |
phoenix |
/* -*-linux-c-*-
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* $Id: pktgen.c,v 1.1.1.1 2004-04-17 22:13:21 phoenix Exp $
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* pktgen.c: Packet Generator for performance evaluation.
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*
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* Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
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* Uppsala University, Sweden
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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, IPG (interpacket gap), 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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* * Updated to support generation over multiple interfaces at once
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* by creating 32 /proc/net/pg* files. Each file can be manipulated
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* individually.
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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 some 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. Will write receiver next.
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* * The new changes seem to have a performance impact of around 1%,
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* as far as I can tell.
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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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*
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* clone_skb=0 means all packets are allocated this also means ranges time
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| 43 |
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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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* 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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* See Documentation/networking/pktgen.txt for how to use this.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/types.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/slab.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/inet.h>
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#include <asm/byteorder.h>
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#include <asm/bitops.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/uaccess.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/udp.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/inetdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/proc_fs.h>
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#include <linux/if_arp.h>
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#include <net/checksum.h>
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#include <asm/timex.h>
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| 87 |
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#define cycles() ((u32)get_cycles())
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| 89 |
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| 90 |
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#define VERSION "pktgen version 1.3"
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static char version[] __initdata =
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"pktgen.c: v1.3: Packet Generator for packet performance testing.\n";
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| 94 |
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/* Used to help with determining the pkts on receive */
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| 96 |
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#define PKTGEN_MAGIC 0xbe9be955
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| 98 |
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| 99 |
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/* Keep information per interface */
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struct pktgen_info {
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/* Parameters */
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| 103 |
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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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| 108 |
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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_SET_SRCMAC (1<<6) /* Specify-Src-Mac
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(default is to use Interface's MAC Addr) */
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#define F_SET_SRCIP (1<<7) /* Specify-Src-IP
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(default is to use Interface's IP Addr) */
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| 118 |
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| 119 |
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| 120 |
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int pkt_size; /* = ETH_ZLEN; */
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| 121 |
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int nfrags;
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| 122 |
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__u32 ipg; /* Default Interpacket gap in nsec */
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| 123 |
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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 errors; /* Errors when trying to transmit, pkts will be re-sent */
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struct timeval started_at;
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struct timeval stopped_at;
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| 128 |
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__u64 idle_acc;
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| 129 |
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__u32 seq_num;
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| 130 |
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| 131 |
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int clone_skb; /* Use multiple SKBs during packet gen. If this number
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* is greater than 1, then that many coppies of the same
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* packet will be sent before a new packet is allocated.
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* For instance, if you want to send 1024 identical packets
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* before creating a new packet, set clone_skb to 1024.
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*/
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int busy;
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| 138 |
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int do_run_run; /* if this changes to false, the test will stop */
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| 139 |
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| 140 |
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char outdev[32];
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| 141 |
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char dst_min[32];
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char dst_max[32];
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char src_min[32];
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char src_max[32];
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| 145 |
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| 146 |
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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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__u32 saddr_min; /* inclusive, source IP address */
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__u32 saddr_max; /* exclusive, source IP address */
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__u32 daddr_min; /* inclusive, dest IP address */
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__u32 daddr_max; /* exclusive, dest IP address */
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| 153 |
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| 154 |
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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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| 156 |
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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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| 158 |
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| 159 |
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__u32 src_mac_count; /* How many MACs to iterate through */
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| 160 |
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__u32 dst_mac_count; /* How many MACs to iterate through */
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| 161 |
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| 162 |
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unsigned char dst_mac[6];
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| 163 |
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unsigned char src_mac[6];
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| 164 |
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| 165 |
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__u32 cur_dst_mac_offset;
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__u32 cur_src_mac_offset;
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__u32 cur_saddr;
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| 168 |
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__u32 cur_daddr;
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| 169 |
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__u16 cur_udp_dst;
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| 170 |
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__u16 cur_udp_src;
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| 171 |
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| 172 |
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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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| 180 |
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*/
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| 181 |
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__u16 pad; /* pad out the hh struct to an even 16 bytes */
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| 182 |
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char result[512];
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| 183 |
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| 184 |
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/* proc file names */
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| 185 |
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char fname[80];
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| 186 |
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char busy_fname[80];
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| 187 |
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| 188 |
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struct proc_dir_entry *proc_ent;
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| 189 |
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struct proc_dir_entry *busy_proc_ent;
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| 190 |
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};
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| 191 |
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| 192 |
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struct pktgen_hdr {
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| 193 |
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__u32 pgh_magic;
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| 194 |
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__u32 seq_num;
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| 195 |
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struct timeval timestamp;
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| 196 |
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};
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| 197 |
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| 198 |
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static int cpu_speed;
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| 199 |
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static int debug;
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| 200 |
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| 201 |
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/* Module parameters, defaults. */
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| 202 |
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static int count_d = 100000;
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| 203 |
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static int ipg_d = 0;
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| 204 |
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static int clone_skb_d = 0;
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| 205 |
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| 206 |
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| 207 |
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#define MAX_PKTGEN 8
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| 208 |
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static struct pktgen_info pginfos[MAX_PKTGEN];
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| 209 |
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| 210 |
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| 211 |
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/** Convert to miliseconds */
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| 212 |
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inline __u64 tv_to_ms(const struct timeval* tv) {
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| 213 |
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__u64 ms = tv->tv_usec / 1000;
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| 214 |
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ms += (__u64)tv->tv_sec * (__u64)1000;
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| 215 |
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return ms;
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| 216 |
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}
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| 217 |
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| 218 |
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inline __u64 getCurMs(void) {
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| 219 |
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struct timeval tv;
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| 220 |
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do_gettimeofday(&tv);
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| 221 |
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return tv_to_ms(&tv);
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| 222 |
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}
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| 223 |
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| 224 |
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#define PG_PROC_DIR "pktgen"
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| 225 |
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static struct proc_dir_entry *proc_dir = 0;
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| 226 |
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| 227 |
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static struct net_device *setup_inject(struct pktgen_info* info)
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| 228 |
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{
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| 229 |
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struct net_device *odev;
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| 230 |
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| 231 |
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rtnl_lock();
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| 232 |
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odev = __dev_get_by_name(info->outdev);
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| 233 |
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if (!odev) {
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| 234 |
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sprintf(info->result, "No such netdevice: \"%s\"", info->outdev);
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| 235 |
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goto out_unlock;
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| 236 |
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}
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| 237 |
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| 238 |
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if (odev->type != ARPHRD_ETHER) {
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| 239 |
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sprintf(info->result, "Not ethernet device: \"%s\"", info->outdev);
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| 240 |
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goto out_unlock;
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| 241 |
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}
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| 242 |
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|
| 243 |
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if (!netif_running(odev)) {
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| 244 |
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sprintf(info->result, "Device is down: \"%s\"", info->outdev);
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| 245 |
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goto out_unlock;
|
| 246 |
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}
|
| 247 |
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|
|
| 248 |
|
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/* Default to the interface's mac if not explicitly set. */
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| 249 |
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if (!(info->flags & F_SET_SRCMAC)) {
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| 250 |
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memcpy(&(info->hh[6]), odev->dev_addr, 6);
|
| 251 |
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}
|
| 252 |
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else {
|
| 253 |
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memcpy(&(info->hh[6]), info->src_mac, 6);
|
| 254 |
|
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}
|
| 255 |
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|
|
| 256 |
|
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/* Set up Dest MAC */
|
| 257 |
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memcpy(&(info->hh[0]), info->dst_mac, 6);
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| 258 |
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|
| 259 |
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info->saddr_min = 0;
|
| 260 |
|
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info->saddr_max = 0;
|
| 261 |
|
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if (strlen(info->src_min) == 0) {
|
| 262 |
|
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if (odev->ip_ptr) {
|
| 263 |
|
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struct in_device *in_dev = odev->ip_ptr;
|
| 264 |
|
|
|
| 265 |
|
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if (in_dev->ifa_list) {
|
| 266 |
|
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info->saddr_min = in_dev->ifa_list->ifa_address;
|
| 267 |
|
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info->saddr_max = info->saddr_min;
|
| 268 |
|
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}
|
| 269 |
|
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}
|
| 270 |
|
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}
|
| 271 |
|
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else {
|
| 272 |
|
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info->saddr_min = in_aton(info->src_min);
|
| 273 |
|
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info->saddr_max = in_aton(info->src_max);
|
| 274 |
|
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}
|
| 275 |
|
|
|
| 276 |
|
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info->daddr_min = in_aton(info->dst_min);
|
| 277 |
|
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info->daddr_max = in_aton(info->dst_max);
|
| 278 |
|
|
|
| 279 |
|
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/* Initialize current values. */
|
| 280 |
|
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info->cur_dst_mac_offset = 0;
|
| 281 |
|
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info->cur_src_mac_offset = 0;
|
| 282 |
|
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info->cur_saddr = info->saddr_min;
|
| 283 |
|
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info->cur_daddr = info->daddr_min;
|
| 284 |
|
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info->cur_udp_dst = info->udp_dst_min;
|
| 285 |
|
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info->cur_udp_src = info->udp_src_min;
|
| 286 |
|
|
|
| 287 |
|
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atomic_inc(&odev->refcnt);
|
| 288 |
|
|
rtnl_unlock();
|
| 289 |
|
|
|
| 290 |
|
|
return odev;
|
| 291 |
|
|
|
| 292 |
|
|
out_unlock:
|
| 293 |
|
|
rtnl_unlock();
|
| 294 |
|
|
return NULL;
|
| 295 |
|
|
}
|
| 296 |
|
|
|
| 297 |
|
|
static void nanospin(int ipg, struct pktgen_info* info)
|
| 298 |
|
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{
|
| 299 |
|
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u32 idle_start, idle;
|
| 300 |
|
|
|
| 301 |
|
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idle_start = cycles();
|
| 302 |
|
|
|
| 303 |
|
|
for (;;) {
|
| 304 |
|
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barrier();
|
| 305 |
|
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idle = cycles() - idle_start;
|
| 306 |
|
|
if (idle * 1000 >= ipg * cpu_speed)
|
| 307 |
|
|
break;
|
| 308 |
|
|
}
|
| 309 |
|
|
info->idle_acc += idle;
|
| 310 |
|
|
}
|
| 311 |
|
|
|
| 312 |
|
|
static int calc_mhz(void)
|
| 313 |
|
|
{
|
| 314 |
|
|
struct timeval start, stop;
|
| 315 |
|
|
u32 start_s, elapsed;
|
| 316 |
|
|
|
| 317 |
|
|
do_gettimeofday(&start);
|
| 318 |
|
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start_s = cycles();
|
| 319 |
|
|
do {
|
| 320 |
|
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barrier();
|
| 321 |
|
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elapsed = cycles() - start_s;
|
| 322 |
|
|
if (elapsed == 0)
|
| 323 |
|
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return 0;
|
| 324 |
|
|
} while (elapsed < 1000 * 50000);
|
| 325 |
|
|
do_gettimeofday(&stop);
|
| 326 |
|
|
return elapsed/(stop.tv_usec-start.tv_usec+1000000*(stop.tv_sec-start.tv_sec));
|
| 327 |
|
|
}
|
| 328 |
|
|
|
| 329 |
|
|
static void cycles_calibrate(void)
|
| 330 |
|
|
{
|
| 331 |
|
|
int i;
|
| 332 |
|
|
|
| 333 |
|
|
for (i = 0; i < 3; i++) {
|
| 334 |
|
|
int res = calc_mhz();
|
| 335 |
|
|
if (res > cpu_speed)
|
| 336 |
|
|
cpu_speed = res;
|
| 337 |
|
|
}
|
| 338 |
|
|
}
|
| 339 |
|
|
|
| 340 |
|
|
|
| 341 |
|
|
/* Increment/randomize headers according to flags and current values
|
| 342 |
|
|
* for IP src/dest, UDP src/dst port, MAC-Addr src/dst
|
| 343 |
|
|
*/
|
| 344 |
|
|
static void mod_cur_headers(struct pktgen_info* info) {
|
| 345 |
|
|
__u32 imn;
|
| 346 |
|
|
__u32 imx;
|
| 347 |
|
|
|
| 348 |
|
|
/* Deal with source MAC */
|
| 349 |
|
|
if (info->src_mac_count > 1) {
|
| 350 |
|
|
__u32 mc;
|
| 351 |
|
|
__u32 tmp;
|
| 352 |
|
|
if (info->flags & F_MACSRC_RND) {
|
| 353 |
|
|
mc = net_random() % (info->src_mac_count);
|
| 354 |
|
|
}
|
| 355 |
|
|
else {
|
| 356 |
|
|
mc = info->cur_src_mac_offset++;
|
| 357 |
|
|
if (info->cur_src_mac_offset > info->src_mac_count) {
|
| 358 |
|
|
info->cur_src_mac_offset = 0;
|
| 359 |
|
|
}
|
| 360 |
|
|
}
|
| 361 |
|
|
|
| 362 |
|
|
tmp = info->src_mac[5] + (mc & 0xFF);
|
| 363 |
|
|
info->hh[11] = tmp;
|
| 364 |
|
|
tmp = (info->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
|
| 365 |
|
|
info->hh[10] = tmp;
|
| 366 |
|
|
tmp = (info->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
|
| 367 |
|
|
info->hh[9] = tmp;
|
| 368 |
|
|
tmp = (info->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
|
| 369 |
|
|
info->hh[8] = tmp;
|
| 370 |
|
|
tmp = (info->src_mac[1] + (tmp >> 8));
|
| 371 |
|
|
info->hh[7] = tmp;
|
| 372 |
|
|
}
|
| 373 |
|
|
|
| 374 |
|
|
/* Deal with Destination MAC */
|
| 375 |
|
|
if (info->dst_mac_count > 1) {
|
| 376 |
|
|
__u32 mc;
|
| 377 |
|
|
__u32 tmp;
|
| 378 |
|
|
if (info->flags & F_MACDST_RND) {
|
| 379 |
|
|
mc = net_random() % (info->dst_mac_count);
|
| 380 |
|
|
}
|
| 381 |
|
|
else {
|
| 382 |
|
|
mc = info->cur_dst_mac_offset++;
|
| 383 |
|
|
if (info->cur_dst_mac_offset > info->dst_mac_count) {
|
| 384 |
|
|
info->cur_dst_mac_offset = 0;
|
| 385 |
|
|
}
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
tmp = info->dst_mac[5] + (mc & 0xFF);
|
| 389 |
|
|
info->hh[5] = tmp;
|
| 390 |
|
|
tmp = (info->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
|
| 391 |
|
|
info->hh[4] = tmp;
|
| 392 |
|
|
tmp = (info->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
|
| 393 |
|
|
info->hh[3] = tmp;
|
| 394 |
|
|
tmp = (info->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
|
| 395 |
|
|
info->hh[2] = tmp;
|
| 396 |
|
|
tmp = (info->dst_mac[1] + (tmp >> 8));
|
| 397 |
|
|
info->hh[1] = tmp;
|
| 398 |
|
|
}
|
| 399 |
|
|
|
| 400 |
|
|
if (info->udp_src_min < info->udp_src_max) {
|
| 401 |
|
|
if (info->flags & F_UDPSRC_RND) {
|
| 402 |
|
|
info->cur_udp_src = ((net_random() % (info->udp_src_max - info->udp_src_min))
|
| 403 |
|
|
+ info->udp_src_min);
|
| 404 |
|
|
}
|
| 405 |
|
|
else {
|
| 406 |
|
|
info->cur_udp_src++;
|
| 407 |
|
|
if (info->cur_udp_src >= info->udp_src_max) {
|
| 408 |
|
|
info->cur_udp_src = info->udp_src_min;
|
| 409 |
|
|
}
|
| 410 |
|
|
}
|
| 411 |
|
|
}
|
| 412 |
|
|
|
| 413 |
|
|
if (info->udp_dst_min < info->udp_dst_max) {
|
| 414 |
|
|
if (info->flags & F_UDPDST_RND) {
|
| 415 |
|
|
info->cur_udp_dst = ((net_random() % (info->udp_dst_max - info->udp_dst_min))
|
| 416 |
|
|
+ info->udp_dst_min);
|
| 417 |
|
|
}
|
| 418 |
|
|
else {
|
| 419 |
|
|
info->cur_udp_dst++;
|
| 420 |
|
|
if (info->cur_udp_dst >= info->udp_dst_max) {
|
| 421 |
|
|
info->cur_udp_dst = info->udp_dst_min;
|
| 422 |
|
|
}
|
| 423 |
|
|
}
|
| 424 |
|
|
}
|
| 425 |
|
|
|
| 426 |
|
|
if ((imn = ntohl(info->saddr_min)) < (imx = ntohl(info->saddr_max))) {
|
| 427 |
|
|
__u32 t;
|
| 428 |
|
|
if (info->flags & F_IPSRC_RND) {
|
| 429 |
|
|
t = ((net_random() % (imx - imn)) + imn);
|
| 430 |
|
|
}
|
| 431 |
|
|
else {
|
| 432 |
|
|
t = ntohl(info->cur_saddr);
|
| 433 |
|
|
t++;
|
| 434 |
|
|
if (t >= imx) {
|
| 435 |
|
|
t = imn;
|
| 436 |
|
|
}
|
| 437 |
|
|
}
|
| 438 |
|
|
info->cur_saddr = htonl(t);
|
| 439 |
|
|
}
|
| 440 |
|
|
|
| 441 |
|
|
if ((imn = ntohl(info->daddr_min)) < (imx = ntohl(info->daddr_max))) {
|
| 442 |
|
|
__u32 t;
|
| 443 |
|
|
if (info->flags & F_IPDST_RND) {
|
| 444 |
|
|
t = ((net_random() % (imx - imn)) + imn);
|
| 445 |
|
|
}
|
| 446 |
|
|
else {
|
| 447 |
|
|
t = ntohl(info->cur_daddr);
|
| 448 |
|
|
t++;
|
| 449 |
|
|
if (t >= imx) {
|
| 450 |
|
|
t = imn;
|
| 451 |
|
|
}
|
| 452 |
|
|
}
|
| 453 |
|
|
info->cur_daddr = htonl(t);
|
| 454 |
|
|
}
|
| 455 |
|
|
}/* mod_cur_headers */
|
| 456 |
|
|
|
| 457 |
|
|
|
| 458 |
|
|
static struct sk_buff *fill_packet(struct net_device *odev, struct pktgen_info* info)
|
| 459 |
|
|
{
|
| 460 |
|
|
struct sk_buff *skb = NULL;
|
| 461 |
|
|
__u8 *eth;
|
| 462 |
|
|
struct udphdr *udph;
|
| 463 |
|
|
int datalen, iplen;
|
| 464 |
|
|
struct iphdr *iph;
|
| 465 |
|
|
struct pktgen_hdr *pgh = NULL;
|
| 466 |
|
|
|
| 467 |
|
|
skb = alloc_skb(info->pkt_size + 64 + 16, GFP_ATOMIC);
|
| 468 |
|
|
if (!skb) {
|
| 469 |
|
|
sprintf(info->result, "No memory");
|
| 470 |
|
|
return NULL;
|
| 471 |
|
|
}
|
| 472 |
|
|
|
| 473 |
|
|
skb_reserve(skb, 16);
|
| 474 |
|
|
|
| 475 |
|
|
/* Reserve for ethernet and IP header */
|
| 476 |
|
|
eth = (__u8 *) skb_push(skb, 14);
|
| 477 |
|
|
iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr));
|
| 478 |
|
|
udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
|
| 479 |
|
|
|
| 480 |
|
|
/* Update any of the values, used when we're incrementing various
|
| 481 |
|
|
* fields.
|
| 482 |
|
|
*/
|
| 483 |
|
|
mod_cur_headers(info);
|
| 484 |
|
|
|
| 485 |
|
|
memcpy(eth, info->hh, 14);
|
| 486 |
|
|
|
| 487 |
|
|
datalen = info->pkt_size - 14 - 20 - 8; /* Eth + IPh + UDPh */
|
| 488 |
|
|
if (datalen < sizeof(struct pktgen_hdr)) {
|
| 489 |
|
|
datalen = sizeof(struct pktgen_hdr);
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
udph->source = htons(info->cur_udp_src);
|
| 493 |
|
|
udph->dest = htons(info->cur_udp_dst);
|
| 494 |
|
|
udph->len = htons(datalen + 8); /* DATA + udphdr */
|
| 495 |
|
|
udph->check = 0; /* No checksum */
|
| 496 |
|
|
|
| 497 |
|
|
iph->ihl = 5;
|
| 498 |
|
|
iph->version = 4;
|
| 499 |
|
|
iph->ttl = 3;
|
| 500 |
|
|
iph->tos = 0;
|
| 501 |
|
|
iph->protocol = IPPROTO_UDP; /* UDP */
|
| 502 |
|
|
iph->saddr = info->cur_saddr;
|
| 503 |
|
|
iph->daddr = info->cur_daddr;
|
| 504 |
|
|
iph->frag_off = 0;
|
| 505 |
|
|
iplen = 20 + 8 + datalen;
|
| 506 |
|
|
iph->tot_len = htons(iplen);
|
| 507 |
|
|
iph->check = 0;
|
| 508 |
|
|
iph->check = ip_fast_csum((void *) iph, iph->ihl);
|
| 509 |
|
|
skb->protocol = __constant_htons(ETH_P_IP);
|
| 510 |
|
|
skb->mac.raw = ((u8 *)iph) - 14;
|
| 511 |
|
|
skb->dev = odev;
|
| 512 |
|
|
skb->pkt_type = PACKET_HOST;
|
| 513 |
|
|
|
| 514 |
|
|
if (info->nfrags <= 0) {
|
| 515 |
|
|
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
|
| 516 |
|
|
} else {
|
| 517 |
|
|
int frags = info->nfrags;
|
| 518 |
|
|
int i;
|
| 519 |
|
|
|
| 520 |
|
|
/* TODO: Verify this is OK...it sure is ugly. --Ben */
|
| 521 |
|
|
pgh = (struct pktgen_hdr*)(((char*)(udph)) + 8);
|
| 522 |
|
|
|
| 523 |
|
|
if (frags > MAX_SKB_FRAGS)
|
| 524 |
|
|
frags = MAX_SKB_FRAGS;
|
| 525 |
|
|
if (datalen > frags*PAGE_SIZE) {
|
| 526 |
|
|
skb_put(skb, datalen-frags*PAGE_SIZE);
|
| 527 |
|
|
datalen = frags*PAGE_SIZE;
|
| 528 |
|
|
}
|
| 529 |
|
|
|
| 530 |
|
|
i = 0;
|
| 531 |
|
|
while (datalen > 0) {
|
| 532 |
|
|
struct page *page = alloc_pages(GFP_KERNEL, 0);
|
| 533 |
|
|
skb_shinfo(skb)->frags[i].page = page;
|
| 534 |
|
|
skb_shinfo(skb)->frags[i].page_offset = 0;
|
| 535 |
|
|
skb_shinfo(skb)->frags[i].size =
|
| 536 |
|
|
(datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
|
| 537 |
|
|
datalen -= skb_shinfo(skb)->frags[i].size;
|
| 538 |
|
|
skb->len += skb_shinfo(skb)->frags[i].size;
|
| 539 |
|
|
skb->data_len += skb_shinfo(skb)->frags[i].size;
|
| 540 |
|
|
i++;
|
| 541 |
|
|
skb_shinfo(skb)->nr_frags = i;
|
| 542 |
|
|
}
|
| 543 |
|
|
|
| 544 |
|
|
while (i < frags) {
|
| 545 |
|
|
int rem;
|
| 546 |
|
|
|
| 547 |
|
|
if (i == 0)
|
| 548 |
|
|
break;
|
| 549 |
|
|
|
| 550 |
|
|
rem = skb_shinfo(skb)->frags[i - 1].size / 2;
|
| 551 |
|
|
if (rem == 0)
|
| 552 |
|
|
break;
|
| 553 |
|
|
|
| 554 |
|
|
skb_shinfo(skb)->frags[i - 1].size -= rem;
|
| 555 |
|
|
|
| 556 |
|
|
skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1];
|
| 557 |
|
|
get_page(skb_shinfo(skb)->frags[i].page);
|
| 558 |
|
|
skb_shinfo(skb)->frags[i].page = skb_shinfo(skb)->frags[i - 1].page;
|
| 559 |
|
|
skb_shinfo(skb)->frags[i].page_offset += skb_shinfo(skb)->frags[i - 1].size;
|
| 560 |
|
|
skb_shinfo(skb)->frags[i].size = rem;
|
| 561 |
|
|
i++;
|
| 562 |
|
|
skb_shinfo(skb)->nr_frags = i;
|
| 563 |
|
|
}
|
| 564 |
|
|
}
|
| 565 |
|
|
|
| 566 |
|
|
/* Stamp the time, and sequence number, convert them to network byte order */
|
| 567 |
|
|
if (pgh) {
|
| 568 |
|
|
pgh->pgh_magic = htonl(PKTGEN_MAGIC);
|
| 569 |
|
|
do_gettimeofday(&(pgh->timestamp));
|
| 570 |
|
|
pgh->timestamp.tv_usec = htonl(pgh->timestamp.tv_usec);
|
| 571 |
|
|
pgh->timestamp.tv_sec = htonl(pgh->timestamp.tv_sec);
|
| 572 |
|
|
pgh->seq_num = htonl(info->seq_num);
|
| 573 |
|
|
}
|
| 574 |
|
|
|
| 575 |
|
|
return skb;
|
| 576 |
|
|
}
|
| 577 |
|
|
|
| 578 |
|
|
|
| 579 |
|
|
static void inject(struct pktgen_info* info)
|
| 580 |
|
|
{
|
| 581 |
|
|
struct net_device *odev = NULL;
|
| 582 |
|
|
struct sk_buff *skb = NULL;
|
| 583 |
|
|
__u64 total = 0;
|
| 584 |
|
|
__u64 idle = 0;
|
| 585 |
|
|
__u64 lcount = 0;
|
| 586 |
|
|
int nr_frags = 0;
|
| 587 |
|
|
int last_ok = 1; /* Was last skb sent?
|
| 588 |
|
|
* Or a failed transmit of some sort? This will keep
|
| 589 |
|
|
* sequence numbers in order, for example.
|
| 590 |
|
|
*/
|
| 591 |
|
|
__u64 fp = 0;
|
| 592 |
|
|
__u32 fp_tmp = 0;
|
| 593 |
|
|
|
| 594 |
|
|
odev = setup_inject(info);
|
| 595 |
|
|
if (!odev)
|
| 596 |
|
|
return;
|
| 597 |
|
|
|
| 598 |
|
|
info->do_run_run = 1; /* Cranke yeself! */
|
| 599 |
|
|
info->idle_acc = 0;
|
| 600 |
|
|
info->sofar = 0;
|
| 601 |
|
|
lcount = info->count;
|
| 602 |
|
|
|
| 603 |
|
|
|
| 604 |
|
|
/* Build our initial pkt and place it as a re-try pkt. */
|
| 605 |
|
|
skb = fill_packet(odev, info);
|
| 606 |
|
|
if (skb == NULL) goto out_reldev;
|
| 607 |
|
|
|
| 608 |
|
|
do_gettimeofday(&(info->started_at));
|
| 609 |
|
|
|
| 610 |
|
|
while(info->do_run_run) {
|
| 611 |
|
|
|
| 612 |
|
|
/* Set a time-stamp, so build a new pkt each time */
|
| 613 |
|
|
|
| 614 |
|
|
if (last_ok) {
|
| 615 |
|
|
if (++fp_tmp >= info->clone_skb ) {
|
| 616 |
|
|
kfree_skb(skb);
|
| 617 |
|
|
skb = fill_packet(odev, info);
|
| 618 |
|
|
if (skb == NULL) {
|
| 619 |
|
|
goto out_reldev;
|
| 620 |
|
|
}
|
| 621 |
|
|
fp++;
|
| 622 |
|
|
fp_tmp = 0; /* reset counter */
|
| 623 |
|
|
}
|
| 624 |
|
|
}
|
| 625 |
|
|
|
| 626 |
|
|
nr_frags = skb_shinfo(skb)->nr_frags;
|
| 627 |
|
|
|
| 628 |
|
|
spin_lock_bh(&odev->xmit_lock);
|
| 629 |
|
|
if (!netif_queue_stopped(odev)) {
|
| 630 |
|
|
|
| 631 |
|
|
atomic_inc(&skb->users);
|
| 632 |
|
|
|
| 633 |
|
|
if (odev->hard_start_xmit(skb, odev)) {
|
| 634 |
|
|
|
| 635 |
|
|
atomic_dec(&skb->users);
|
| 636 |
|
|
if (net_ratelimit()) {
|
| 637 |
|
|
printk(KERN_INFO "Hard xmit error\n");
|
| 638 |
|
|
}
|
| 639 |
|
|
info->errors++;
|
| 640 |
|
|
last_ok = 0;
|
| 641 |
|
|
}
|
| 642 |
|
|
else {
|
| 643 |
|
|
last_ok = 1;
|
| 644 |
|
|
info->sofar++;
|
| 645 |
|
|
info->seq_num++;
|
| 646 |
|
|
}
|
| 647 |
|
|
}
|
| 648 |
|
|
else {
|
| 649 |
|
|
/* Re-try it next time */
|
| 650 |
|
|
last_ok = 0;
|
| 651 |
|
|
}
|
| 652 |
|
|
|
| 653 |
|
|
|
| 654 |
|
|
spin_unlock_bh(&odev->xmit_lock);
|
| 655 |
|
|
|
| 656 |
|
|
if (info->ipg) {
|
| 657 |
|
|
/* Try not to busy-spin if we have larger sleep times.
|
| 658 |
|
|
* TODO: Investigate better ways to do this.
|
| 659 |
|
|
*/
|
| 660 |
|
|
if (info->ipg < 10000) { /* 10 usecs or less */
|
| 661 |
|
|
nanospin(info->ipg, info);
|
| 662 |
|
|
}
|
| 663 |
|
|
else if (info->ipg < 10000000) { /* 10ms or less */
|
| 664 |
|
|
udelay(info->ipg / 1000);
|
| 665 |
|
|
}
|
| 666 |
|
|
else {
|
| 667 |
|
|
mdelay(info->ipg / 1000000);
|
| 668 |
|
|
}
|
| 669 |
|
|
}
|
| 670 |
|
|
|
| 671 |
|
|
if (signal_pending(current)) {
|
| 672 |
|
|
break;
|
| 673 |
|
|
}
|
| 674 |
|
|
|
| 675 |
|
|
/* If lcount is zero, then run forever */
|
| 676 |
|
|
if ((lcount != 0) && (--lcount == 0)) {
|
| 677 |
|
|
if (atomic_read(&skb->users) != 1) {
|
| 678 |
|
|
u32 idle_start, idle;
|
| 679 |
|
|
|
| 680 |
|
|
idle_start = cycles();
|
| 681 |
|
|
while (atomic_read(&skb->users) != 1) {
|
| 682 |
|
|
if (signal_pending(current)) {
|
| 683 |
|
|
break;
|
| 684 |
|
|
}
|
| 685 |
|
|
schedule();
|
| 686 |
|
|
}
|
| 687 |
|
|
idle = cycles() - idle_start;
|
| 688 |
|
|
info->idle_acc += idle;
|
| 689 |
|
|
}
|
| 690 |
|
|
break;
|
| 691 |
|
|
}
|
| 692 |
|
|
|
| 693 |
|
|
if (netif_queue_stopped(odev) || current->need_resched) {
|
| 694 |
|
|
u32 idle_start, idle;
|
| 695 |
|
|
|
| 696 |
|
|
idle_start = cycles();
|
| 697 |
|
|
do {
|
| 698 |
|
|
if (signal_pending(current)) {
|
| 699 |
|
|
info->do_run_run = 0;
|
| 700 |
|
|
break;
|
| 701 |
|
|
}
|
| 702 |
|
|
if (!netif_running(odev)) {
|
| 703 |
|
|
info->do_run_run = 0;
|
| 704 |
|
|
break;
|
| 705 |
|
|
}
|
| 706 |
|
|
if (current->need_resched)
|
| 707 |
|
|
schedule();
|
| 708 |
|
|
else
|
| 709 |
|
|
do_softirq();
|
| 710 |
|
|
} while (netif_queue_stopped(odev));
|
| 711 |
|
|
idle = cycles() - idle_start;
|
| 712 |
|
|
info->idle_acc += idle;
|
| 713 |
|
|
}
|
| 714 |
|
|
}/* while we should be running */
|
| 715 |
|
|
|
| 716 |
|
|
do_gettimeofday(&(info->stopped_at));
|
| 717 |
|
|
|
| 718 |
|
|
total = (info->stopped_at.tv_sec - info->started_at.tv_sec) * 1000000 +
|
| 719 |
|
|
info->stopped_at.tv_usec - info->started_at.tv_usec;
|
| 720 |
|
|
|
| 721 |
|
|
idle = (__u32)(info->idle_acc)/(__u32)(cpu_speed);
|
| 722 |
|
|
|
| 723 |
|
|
{
|
| 724 |
|
|
char *p = info->result;
|
| 725 |
|
|
__u64 pps = (__u32)(info->sofar * 1000) / ((__u32)(total) / 1000);
|
| 726 |
|
|
__u64 bps = pps * 8 * (info->pkt_size + 4); /* take 32bit ethernet CRC into account */
|
| 727 |
|
|
p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags) %llupps %lluMb/sec (%llubps) errors: %llu",
|
| 728 |
|
|
(unsigned long long) total,
|
| 729 |
|
|
(unsigned long long) (total - idle),
|
| 730 |
|
|
(unsigned long long) idle,
|
| 731 |
|
|
(unsigned long long) info->sofar,
|
| 732 |
|
|
skb->len + 4, /* Add 4 to account for the ethernet checksum */
|
| 733 |
|
|
nr_frags,
|
| 734 |
|
|
(unsigned long long) pps,
|
| 735 |
|
|
(unsigned long long) (bps / (u64) 1024 / (u64) 1024),
|
| 736 |
|
|
(unsigned long long) bps,
|
| 737 |
|
|
(unsigned long long) info->errors
|
| 738 |
|
|
);
|
| 739 |
|
|
}
|
| 740 |
|
|
|
| 741 |
|
|
kfree_skb(skb);
|
| 742 |
|
|
|
| 743 |
|
|
out_reldev:
|
| 744 |
|
|
if (odev) {
|
| 745 |
|
|
dev_put(odev);
|
| 746 |
|
|
odev = NULL;
|
| 747 |
|
|
}
|
| 748 |
|
|
|
| 749 |
|
|
return;
|
| 750 |
|
|
|
| 751 |
|
|
}
|
| 752 |
|
|
|
| 753 |
|
|
/* proc/net/pktgen/pg */
|
| 754 |
|
|
|
| 755 |
|
|
static int proc_busy_read(char *buf , char **start, off_t offset,
|
| 756 |
|
|
int len, int *eof, void *data)
|
| 757 |
|
|
{
|
| 758 |
|
|
char *p;
|
| 759 |
|
|
int idx = (int)(long)(data);
|
| 760 |
|
|
struct pktgen_info* info = NULL;
|
| 761 |
|
|
|
| 762 |
|
|
if ((idx < 0) || (idx >= MAX_PKTGEN)) {
|
| 763 |
|
|
printk("ERROR: idx: %i is out of range in proc_write\n", idx);
|
| 764 |
|
|
return -EINVAL;
|
| 765 |
|
|
}
|
| 766 |
|
|
info = &(pginfos[idx]);
|
| 767 |
|
|
|
| 768 |
|
|
p = buf;
|
| 769 |
|
|
p += sprintf(p, "%d\n", info->busy);
|
| 770 |
|
|
*eof = 1;
|
| 771 |
|
|
|
| 772 |
|
|
return p-buf;
|
| 773 |
|
|
}
|
| 774 |
|
|
|
| 775 |
|
|
static int proc_read(char *buf , char **start, off_t offset,
|
| 776 |
|
|
int len, int *eof, void *data)
|
| 777 |
|
|
{
|
| 778 |
|
|
char *p;
|
| 779 |
|
|
int i;
|
| 780 |
|
|
int idx = (int)(long)(data);
|
| 781 |
|
|
struct pktgen_info* info = NULL;
|
| 782 |
|
|
__u64 sa;
|
| 783 |
|
|
__u64 stopped;
|
| 784 |
|
|
__u64 now = getCurMs();
|
| 785 |
|
|
|
| 786 |
|
|
if ((idx < 0) || (idx >= MAX_PKTGEN)) {
|
| 787 |
|
|
printk("ERROR: idx: %i is out of range in proc_write\n", idx);
|
| 788 |
|
|
return -EINVAL;
|
| 789 |
|
|
}
|
| 790 |
|
|
info = &(pginfos[idx]);
|
| 791 |
|
|
|
| 792 |
|
|
p = buf;
|
| 793 |
|
|
p += sprintf(p, "%s\n", VERSION); /* Help with parsing compatibility */
|
| 794 |
|
|
p += sprintf(p, "Params: count %llu pkt_size: %u frags: %d ipg: %u clone_skb: %d odev \"%s\"\n",
|
| 795 |
|
|
(unsigned long long) info->count,
|
| 796 |
|
|
info->pkt_size, info->nfrags, info->ipg,
|
| 797 |
|
|
info->clone_skb, info->outdev);
|
| 798 |
|
|
p += sprintf(p, " dst_min: %s dst_max: %s src_min: %s src_max: %s\n",
|
| 799 |
|
|
info->dst_min, info->dst_max, info->src_min, info->src_max);
|
| 800 |
|
|
p += sprintf(p, " src_mac: ");
|
| 801 |
|
|
for (i = 0; i < 6; i++) {
|
| 802 |
|
|
p += sprintf(p, "%02X%s", info->src_mac[i], i == 5 ? " " : ":");
|
| 803 |
|
|
}
|
| 804 |
|
|
p += sprintf(p, "dst_mac: ");
|
| 805 |
|
|
for (i = 0; i < 6; i++) {
|
| 806 |
|
|
p += sprintf(p, "%02X%s", info->dst_mac[i], i == 5 ? "\n" : ":");
|
| 807 |
|
|
}
|
| 808 |
|
|
p += sprintf(p, " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
|
| 809 |
|
|
info->udp_src_min, info->udp_src_max, info->udp_dst_min,
|
| 810 |
|
|
info->udp_dst_max);
|
| 811 |
|
|
p += sprintf(p, " src_mac_count: %d dst_mac_count: %d\n Flags: ",
|
| 812 |
|
|
info->src_mac_count, info->dst_mac_count);
|
| 813 |
|
|
if (info->flags & F_IPSRC_RND) {
|
| 814 |
|
|
p += sprintf(p, "IPSRC_RND ");
|
| 815 |
|
|
}
|
| 816 |
|
|
if (info->flags & F_IPDST_RND) {
|
| 817 |
|
|
p += sprintf(p, "IPDST_RND ");
|
| 818 |
|
|
}
|
| 819 |
|
|
if (info->flags & F_UDPSRC_RND) {
|
| 820 |
|
|
p += sprintf(p, "UDPSRC_RND ");
|
| 821 |
|
|
}
|
| 822 |
|
|
if (info->flags & F_UDPDST_RND) {
|
| 823 |
|
|
p += sprintf(p, "UDPDST_RND ");
|
| 824 |
|
|
}
|
| 825 |
|
|
if (info->flags & F_MACSRC_RND) {
|
| 826 |
|
|
p += sprintf(p, "MACSRC_RND ");
|
| 827 |
|
|
}
|
| 828 |
|
|
if (info->flags & F_MACDST_RND) {
|
| 829 |
|
|
p += sprintf(p, "MACDST_RND ");
|
| 830 |
|
|
}
|
| 831 |
|
|
p += sprintf(p, "\n");
|
| 832 |
|
|
|
| 833 |
|
|
sa = tv_to_ms(&(info->started_at));
|
| 834 |
|
|
stopped = tv_to_ms(&(info->stopped_at));
|
| 835 |
|
|
if (info->do_run_run) {
|
| 836 |
|
|
stopped = now; /* not really stopped, more like last-running-at */
|
| 837 |
|
|
}
|
| 838 |
|
|
p += sprintf(p, "Current:\n pkts-sofar: %llu errors: %llu\n started: %llums stopped: %llums now: %llums idle: %lluns\n",
|
| 839 |
|
|
(unsigned long long) info->sofar,
|
| 840 |
|
|
(unsigned long long) info->errors,
|
| 841 |
|
|
(unsigned long long) sa,
|
| 842 |
|
|
(unsigned long long) stopped,
|
| 843 |
|
|
(unsigned long long) now,
|
| 844 |
|
|
(unsigned long long) info->idle_acc);
|
| 845 |
|
|
p += sprintf(p, " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
|
| 846 |
|
|
info->seq_num, info->cur_dst_mac_offset, info->cur_src_mac_offset);
|
| 847 |
|
|
p += sprintf(p, " cur_saddr: 0x%x cur_daddr: 0x%x cur_udp_dst: %d cur_udp_src: %d\n",
|
| 848 |
|
|
info->cur_saddr, info->cur_daddr, info->cur_udp_dst, info->cur_udp_src);
|
| 849 |
|
|
|
| 850 |
|
|
if (info->result[0])
|
| 851 |
|
|
p += sprintf(p, "Result: %s\n", info->result);
|
| 852 |
|
|
else
|
| 853 |
|
|
p += sprintf(p, "Result: Idle\n");
|
| 854 |
|
|
*eof = 1;
|
| 855 |
|
|
|
| 856 |
|
|
return p - buf;
|
| 857 |
|
|
}
|
| 858 |
|
|
|
| 859 |
|
|
static int count_trail_chars(const char *user_buffer, unsigned int maxlen)
|
| 860 |
|
|
{
|
| 861 |
|
|
int i;
|
| 862 |
|
|
|
| 863 |
|
|
for (i = 0; i < maxlen; i++) {
|
| 864 |
|
|
char c;
|
| 865 |
|
|
|
| 866 |
|
|
if (get_user(c, &user_buffer[i]))
|
| 867 |
|
|
return -EFAULT;
|
| 868 |
|
|
switch (c) {
|
| 869 |
|
|
case '\"':
|
| 870 |
|
|
case '\n':
|
| 871 |
|
|
case '\r':
|
| 872 |
|
|
case '\t':
|
| 873 |
|
|
case ' ':
|
| 874 |
|
|
case '=':
|
| 875 |
|
|
break;
|
| 876 |
|
|
default:
|
| 877 |
|
|
goto done;
|
| 878 |
|
|
};
|
| 879 |
|
|
}
|
| 880 |
|
|
done:
|
| 881 |
|
|
return i;
|
| 882 |
|
|
}
|
| 883 |
|
|
|
| 884 |
|
|
static unsigned long num_arg(const char *user_buffer, unsigned long maxlen,
|
| 885 |
|
|
unsigned long *num)
|
| 886 |
|
|
{
|
| 887 |
|
|
int i = 0;
|
| 888 |
|
|
|
| 889 |
|
|
*num = 0;
|
| 890 |
|
|
|
| 891 |
|
|
for(; i < maxlen; i++) {
|
| 892 |
|
|
char c;
|
| 893 |
|
|
|
| 894 |
|
|
if (get_user(c, &user_buffer[i]))
|
| 895 |
|
|
return -EFAULT;
|
| 896 |
|
|
if ((c >= '0') && (c <= '9')) {
|
| 897 |
|
|
*num *= 10;
|
| 898 |
|
|
*num += c -'0';
|
| 899 |
|
|
} else
|
| 900 |
|
|
break;
|
| 901 |
|
|
}
|
| 902 |
|
|
return i;
|
| 903 |
|
|
}
|
| 904 |
|
|
|
| 905 |
|
|
static int strn_len(const char *user_buffer, unsigned int maxlen)
|
| 906 |
|
|
{
|
| 907 |
|
|
int i = 0;
|
| 908 |
|
|
|
| 909 |
|
|
for(; i < maxlen; i++) {
|
| 910 |
|
|
char c;
|
| 911 |
|
|
|
| 912 |
|
|
if (get_user(c, &user_buffer[i]))
|
| 913 |
|
|
return -EFAULT;
|
| 914 |
|
|
switch (c) {
|
| 915 |
|
|
case '\"':
|
| 916 |
|
|
case '\n':
|
| 917 |
|
|
case '\r':
|
| 918 |
|
|
case '\t':
|
| 919 |
|
|
case ' ':
|
| 920 |
|
|
goto done_str;
|
| 921 |
|
|
default:
|
| 922 |
|
|
break;
|
| 923 |
|
|
};
|
| 924 |
|
|
}
|
| 925 |
|
|
done_str:
|
| 926 |
|
|
return i;
|
| 927 |
|
|
}
|
| 928 |
|
|
|
| 929 |
|
|
static int proc_write(struct file *file, const char *user_buffer,
|
| 930 |
|
|
unsigned long count, void *data)
|
| 931 |
|
|
{
|
| 932 |
|
|
int i = 0, max, len;
|
| 933 |
|
|
char name[16], valstr[32];
|
| 934 |
|
|
unsigned long value = 0;
|
| 935 |
|
|
int idx = (int)(long)(data);
|
| 936 |
|
|
struct pktgen_info* info = NULL;
|
| 937 |
|
|
char* result = NULL;
|
| 938 |
|
|
int tmp;
|
| 939 |
|
|
|
| 940 |
|
|
if ((idx < 0) || (idx >= MAX_PKTGEN)) {
|
| 941 |
|
|
printk("ERROR: idx: %i is out of range in proc_write\n", idx);
|
| 942 |
|
|
return -EINVAL;
|
| 943 |
|
|
}
|
| 944 |
|
|
info = &(pginfos[idx]);
|
| 945 |
|
|
result = &(info->result[0]);
|
| 946 |
|
|
|
| 947 |
|
|
if (count < 1) {
|
| 948 |
|
|
sprintf(result, "Wrong command format");
|
| 949 |
|
|
return -EINVAL;
|
| 950 |
|
|
}
|
| 951 |
|
|
|
| 952 |
|
|
max = count - i;
|
| 953 |
|
|
tmp = count_trail_chars(&user_buffer[i], max);
|
| 954 |
|
|
if (tmp < 0)
|
| 955 |
|
|
return tmp;
|
| 956 |
|
|
i += tmp;
|
| 957 |
|
|
|
| 958 |
|
|
/* Read variable name */
|
| 959 |
|
|
|
| 960 |
|
|
len = strn_len(&user_buffer[i], sizeof(name) - 1);
|
| 961 |
|
|
if (len < 0)
|
| 962 |
|
|
return len;
|
| 963 |
|
|
memset(name, 0, sizeof(name));
|
| 964 |
|
|
if (copy_from_user(name, &user_buffer[i], len))
|
| 965 |
|
|
return -EFAULT;
|
| 966 |
|
|
i += len;
|
| 967 |
|
|
|
| 968 |
|
|
max = count -i;
|
| 969 |
|
|
len = count_trail_chars(&user_buffer[i], max);
|
| 970 |
|
|
if (len < 0)
|
| 971 |
|
|
return len;
|
| 972 |
|
|
i += len;
|
| 973 |
|
|
|
| 974 |
|
|
if (debug)
|
| 975 |
|
|
printk("pg: %s,%lu\n", name, count);
|
| 976 |
|
|
|
| 977 |
|
|
if (!strcmp(name, "stop")) {
|
| 978 |
|
|
if (info->do_run_run) {
|
| 979 |
|
|
strcpy(result, "Stopping");
|
| 980 |
|
|
}
|
| 981 |
|
|
else {
|
| 982 |
|
|
strcpy(result, "Already stopped...\n");
|
| 983 |
|
|
}
|
| 984 |
|
|
info->do_run_run = 0;
|
| 985 |
|
|
return count;
|
| 986 |
|
|
}
|
| 987 |
|
|
|
| 988 |
|
|
if (!strcmp(name, "pkt_size")) {
|
| 989 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 990 |
|
|
if (len < 0)
|
| 991 |
|
|
return len;
|
| 992 |
|
|
i += len;
|
| 993 |
|
|
if (value < 14+20+8)
|
| 994 |
|
|
value = 14+20+8;
|
| 995 |
|
|
info->pkt_size = value;
|
| 996 |
|
|
sprintf(result, "OK: pkt_size=%u", info->pkt_size);
|
| 997 |
|
|
return count;
|
| 998 |
|
|
}
|
| 999 |
|
|
if (!strcmp(name, "frags")) {
|
| 1000 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1001 |
|
|
if (len < 0)
|
| 1002 |
|
|
return len;
|
| 1003 |
|
|
i += len;
|
| 1004 |
|
|
info->nfrags = value;
|
| 1005 |
|
|
sprintf(result, "OK: frags=%u", info->nfrags);
|
| 1006 |
|
|
return count;
|
| 1007 |
|
|
}
|
| 1008 |
|
|
if (!strcmp(name, "ipg")) {
|
| 1009 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1010 |
|
|
if (len < 0)
|
| 1011 |
|
|
return len;
|
| 1012 |
|
|
i += len;
|
| 1013 |
|
|
info->ipg = value;
|
| 1014 |
|
|
sprintf(result, "OK: ipg=%u", info->ipg);
|
| 1015 |
|
|
return count;
|
| 1016 |
|
|
}
|
| 1017 |
|
|
if (!strcmp(name, "udp_src_min")) {
|
| 1018 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1019 |
|
|
if (len < 0)
|
| 1020 |
|
|
return len;
|
| 1021 |
|
|
i += len;
|
| 1022 |
|
|
info->udp_src_min = value;
|
| 1023 |
|
|
sprintf(result, "OK: udp_src_min=%u", info->udp_src_min);
|
| 1024 |
|
|
return count;
|
| 1025 |
|
|
}
|
| 1026 |
|
|
if (!strcmp(name, "udp_dst_min")) {
|
| 1027 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1028 |
|
|
if (len < 0)
|
| 1029 |
|
|
return len;
|
| 1030 |
|
|
i += len;
|
| 1031 |
|
|
info->udp_dst_min = value;
|
| 1032 |
|
|
sprintf(result, "OK: udp_dst_min=%u", info->udp_dst_min);
|
| 1033 |
|
|
return count;
|
| 1034 |
|
|
}
|
| 1035 |
|
|
if (!strcmp(name, "udp_src_max")) {
|
| 1036 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1037 |
|
|
if (len < 0)
|
| 1038 |
|
|
return len;
|
| 1039 |
|
|
i += len;
|
| 1040 |
|
|
info->udp_src_max = value;
|
| 1041 |
|
|
sprintf(result, "OK: udp_src_max=%u", info->udp_src_max);
|
| 1042 |
|
|
return count;
|
| 1043 |
|
|
}
|
| 1044 |
|
|
if (!strcmp(name, "udp_dst_max")) {
|
| 1045 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1046 |
|
|
if (len < 0)
|
| 1047 |
|
|
return len;
|
| 1048 |
|
|
i += len;
|
| 1049 |
|
|
info->udp_dst_max = value;
|
| 1050 |
|
|
sprintf(result, "OK: udp_dst_max=%u", info->udp_dst_max);
|
| 1051 |
|
|
return count;
|
| 1052 |
|
|
}
|
| 1053 |
|
|
if (!strcmp(name, "clone_skb")) {
|
| 1054 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1055 |
|
|
if (len < 0)
|
| 1056 |
|
|
return len;
|
| 1057 |
|
|
i += len;
|
| 1058 |
|
|
info->clone_skb = value;
|
| 1059 |
|
|
|
| 1060 |
|
|
sprintf(result, "OK: clone_skb=%d", info->clone_skb);
|
| 1061 |
|
|
return count;
|
| 1062 |
|
|
}
|
| 1063 |
|
|
if (!strcmp(name, "count")) {
|
| 1064 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1065 |
|
|
if (len < 0)
|
| 1066 |
|
|
return len;
|
| 1067 |
|
|
i += len;
|
| 1068 |
|
|
info->count = value;
|
| 1069 |
|
|
sprintf(result, "OK: count=%llu", (unsigned long long) info->count);
|
| 1070 |
|
|
return count;
|
| 1071 |
|
|
}
|
| 1072 |
|
|
if (!strcmp(name, "src_mac_count")) {
|
| 1073 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1074 |
|
|
if (len < 0)
|
| 1075 |
|
|
return len;
|
| 1076 |
|
|
i += len;
|
| 1077 |
|
|
info->src_mac_count = value;
|
| 1078 |
|
|
sprintf(result, "OK: src_mac_count=%d", info->src_mac_count);
|
| 1079 |
|
|
return count;
|
| 1080 |
|
|
}
|
| 1081 |
|
|
if (!strcmp(name, "dst_mac_count")) {
|
| 1082 |
|
|
len = num_arg(&user_buffer[i], 10, &value);
|
| 1083 |
|
|
if (len < 0)
|
| 1084 |
|
|
return len;
|
| 1085 |
|
|
i += len;
|
| 1086 |
|
|
info->dst_mac_count = value;
|
| 1087 |
|
|
sprintf(result, "OK: dst_mac_count=%d", info->dst_mac_count);
|
| 1088 |
|
|
return count;
|
| 1089 |
|
|
}
|
| 1090 |
|
|
if (!strcmp(name, "odev")) {
|
| 1091 |
|
|
len = strn_len(&user_buffer[i], sizeof(info->outdev) - 1);
|
| 1092 |
|
|
if (len < 0)
|
| 1093 |
|
|
return len;
|
| 1094 |
|
|
memset(info->outdev, 0, sizeof(info->outdev));
|
| 1095 |
|
|
if (copy_from_user(info->outdev, &user_buffer[i], len))
|
| 1096 |
|
|
return -EFAULT;
|
| 1097 |
|
|
i += len;
|
| 1098 |
|
|
sprintf(result, "OK: odev=%s", info->outdev);
|
| 1099 |
|
|
return count;
|
| 1100 |
|
|
}
|
| 1101 |
|
|
if (!strcmp(name, "flag")) {
|
| 1102 |
|
|
char f[32];
|
| 1103 |
|
|
len = strn_len(&user_buffer[i], sizeof(f) - 1);
|
| 1104 |
|
|
if (len < 0)
|
| 1105 |
|
|
return len;
|
| 1106 |
|
|
memset(f, 0, 32);
|
| 1107 |
|
|
if (copy_from_user(f, &user_buffer[i], len))
|
| 1108 |
|
|
return -EFAULT;
|
| 1109 |
|
|
i += len;
|
| 1110 |
|
|
if (strcmp(f, "IPSRC_RND") == 0) {
|
| 1111 |
|
|
info->flags |= F_IPSRC_RND;
|
| 1112 |
|
|
}
|
| 1113 |
|
|
else if (strcmp(f, "!IPSRC_RND") == 0) {
|
| 1114 |
|
|
info->flags &= ~F_IPSRC_RND;
|
| 1115 |
|
|
}
|
| 1116 |
|
|
else if (strcmp(f, "IPDST_RND") == 0) {
|
| 1117 |
|
|
info->flags |= F_IPDST_RND;
|
| 1118 |
|
|
}
|
| 1119 |
|
|
else if (strcmp(f, "!IPDST_RND") == 0) {
|
| 1120 |
|
|
info->flags &= ~F_IPDST_RND;
|
| 1121 |
|
|
}
|
| 1122 |
|
|
else if (strcmp(f, "UDPSRC_RND") == 0) {
|
| 1123 |
|
|
info->flags |= F_UDPSRC_RND;
|
| 1124 |
|
|
}
|
| 1125 |
|
|
else if (strcmp(f, "!UDPSRC_RND") == 0) {
|
| 1126 |
|
|
info->flags &= ~F_UDPSRC_RND;
|
| 1127 |
|
|
}
|
| 1128 |
|
|
else if (strcmp(f, "UDPDST_RND") == 0) {
|
| 1129 |
|
|
info->flags |= F_UDPDST_RND;
|
| 1130 |
|
|
}
|
| 1131 |
|
|
else if (strcmp(f, "!UDPDST_RND") == 0) {
|
| 1132 |
|
|
info->flags &= ~F_UDPDST_RND;
|
| 1133 |
|
|
}
|
| 1134 |
|
|
else if (strcmp(f, "MACSRC_RND") == 0) {
|
| 1135 |
|
|
info->flags |= F_MACSRC_RND;
|
| 1136 |
|
|
}
|
| 1137 |
|
|
else if (strcmp(f, "!MACSRC_RND") == 0) {
|
| 1138 |
|
|
info->flags &= ~F_MACSRC_RND;
|
| 1139 |
|
|
}
|
| 1140 |
|
|
else if (strcmp(f, "MACDST_RND") == 0) {
|
| 1141 |
|
|
info->flags |= F_MACDST_RND;
|
| 1142 |
|
|
}
|
| 1143 |
|
|
else if (strcmp(f, "!MACDST_RND") == 0) {
|
| 1144 |
|
|
info->flags &= ~F_MACDST_RND;
|
| 1145 |
|
|
}
|
| 1146 |
|
|
else {
|
| 1147 |
|
|
sprintf(result, "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
|
| 1148 |
|
|
f,
|
| 1149 |
|
|
"IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, MACSRC_RND, MACDST_RND\n");
|
| 1150 |
|
|
return count;
|
| 1151 |
|
|
}
|
| 1152 |
|
|
sprintf(result, "OK: flags=0x%x", info->flags);
|
| 1153 |
|
|
return count;
|
| 1154 |
|
|
}
|
| 1155 |
|
|
if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
|
| 1156 |
|
|
len = strn_len(&user_buffer[i], sizeof(info->dst_min) - 1);
|
| 1157 |
|
|
if (len < 0)
|
| 1158 |
|
|
return len;
|
| 1159 |
|
|
memset(info->dst_min, 0, sizeof(info->dst_min));
|
| 1160 |
|
|
if (copy_from_user(info->dst_min, &user_buffer[i], len))
|
| 1161 |
|
|
return -EFAULT;
|
| 1162 |
|
|
if(debug)
|
| 1163 |
|
|
printk("pg: dst_min set to: %s\n", info->dst_min);
|
| 1164 |
|
|
i += len;
|
| 1165 |
|
|
sprintf(result, "OK: dst_min=%s", info->dst_min);
|
| 1166 |
|
|
return count;
|
| 1167 |
|
|
}
|
| 1168 |
|
|
if (!strcmp(name, "dst_max")) {
|
| 1169 |
|
|
len = strn_len(&user_buffer[i], sizeof(info->dst_max) - 1);
|
| 1170 |
|
|
if (len < 0)
|
| 1171 |
|
|
return len;
|
| 1172 |
|
|
memset(info->dst_max, 0, sizeof(info->dst_max));
|
| 1173 |
|
|
if (copy_from_user(info->dst_max, &user_buffer[i], len))
|
| 1174 |
|
|
return -EFAULT;
|
| 1175 |
|
|
if(debug)
|
| 1176 |
|
|
printk("pg: dst_max set to: %s\n", info->dst_max);
|
| 1177 |
|
|
i += len;
|
| 1178 |
|
|
sprintf(result, "OK: dst_max=%s", info->dst_max);
|
| 1179 |
|
|
return count;
|
| 1180 |
|
|
}
|
| 1181 |
|
|
if (!strcmp(name, "src_min")) {
|
| 1182 |
|
|
len = strn_len(&user_buffer[i], sizeof(info->src_min) - 1);
|
| 1183 |
|
|
if (len < 0)
|
| 1184 |
|
|
return len;
|
| 1185 |
|
|
memset(info->src_min, 0, sizeof(info->src_min));
|
| 1186 |
|
|
if (copy_from_user(info->src_min, &user_buffer[i], len))
|
| 1187 |
|
|
return -EFAULT;
|
| 1188 |
|
|
if(debug)
|
| 1189 |
|
|
printk("pg: src_min set to: %s\n", info->src_min);
|
| 1190 |
|
|
i += len;
|
| 1191 |
|
|
sprintf(result, "OK: src_min=%s", info->src_min);
|
| 1192 |
|
|
return count;
|
| 1193 |
|
|
}
|
| 1194 |
|
|
if (!strcmp(name, "src_max")) {
|
| 1195 |
|
|
len = strn_len(&user_buffer[i], sizeof(info->src_max) - 1);
|
| 1196 |
|
|
if (len < 0)
|
| 1197 |
|
|
return len;
|
| 1198 |
|
|
memset(info->src_max, 0, sizeof(info->src_max));
|
| 1199 |
|
|
if (copy_from_user(info->src_max, &user_buffer[i], len))
|
| 1200 |
|
|
return -EFAULT;
|
| 1201 |
|
|
if(debug)
|
| 1202 |
|
|
printk("pg: src_max set to: %s\n", info->src_max);
|
| 1203 |
|
|
i += len;
|
| 1204 |
|
|
sprintf(result, "OK: src_max=%s", info->src_max);
|
| 1205 |
|
|
return count;
|
| 1206 |
|
|
}
|
| 1207 |
|
|
if (!strcmp(name, "dstmac")) {
|
| 1208 |
|
|
char *v = valstr;
|
| 1209 |
|
|
unsigned char *m = info->dst_mac;
|
| 1210 |
|
|
|
| 1211 |
|
|
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
|
| 1212 |
|
|
if (len < 0)
|
| 1213 |
|
|
return len;
|
| 1214 |
|
|
memset(valstr, 0, sizeof(valstr));
|
| 1215 |
|
|
if (copy_from_user(valstr, &user_buffer[i], len))
|
| 1216 |
|
|
return -EFAULT;
|
| 1217 |
|
|
i += len;
|
| 1218 |
|
|
|
| 1219 |
|
|
for(*m = 0;*v && m < info->dst_mac + 6; v++) {
|
| 1220 |
|
|
if (*v >= '0' && *v <= '9') {
|
| 1221 |
|
|
*m *= 16;
|
| 1222 |
|
|
*m += *v - '0';
|
| 1223 |
|
|
}
|
| 1224 |
|
|
if (*v >= 'A' && *v <= 'F') {
|
| 1225 |
|
|
*m *= 16;
|
| 1226 |
|
|
*m += *v - 'A' + 10;
|
| 1227 |
|
|
}
|
| 1228 |
|
|
if (*v >= 'a' && *v <= 'f') {
|
| 1229 |
|
|
*m *= 16;
|
| 1230 |
|
|
*m += *v - 'a' + 10;
|
| 1231 |
|
|
}
|
| 1232 |
|
|
if (*v == ':') {
|
| 1233 |
|
|
m++;
|
| 1234 |
|
|
*m = 0;
|
| 1235 |
|
|
}
|
| 1236 |
|
|
}
|
| 1237 |
|
|
sprintf(result, "OK: dstmac");
|
| 1238 |
|
|
return count;
|
| 1239 |
|
|
}
|
| 1240 |
|
|
if (!strcmp(name, "srcmac")) {
|
| 1241 |
|
|
char *v = valstr;
|
| 1242 |
|
|
unsigned char *m = info->src_mac;
|
| 1243 |
|
|
|
| 1244 |
|
|
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
|
| 1245 |
|
|
if (len < 0)
|
| 1246 |
|
|
return len;
|
| 1247 |
|
|
memset(valstr, 0, sizeof(valstr));
|
| 1248 |
|
|
if (copy_from_user(valstr, &user_buffer[i], len))
|
| 1249 |
|
|
return -EFAULT;
|
| 1250 |
|
|
i += len;
|
| 1251 |
|
|
|
| 1252 |
|
|
for(*m = 0;*v && m < info->src_mac + 6; v++) {
|
| 1253 |
|
|
if (*v >= '0' && *v <= '9') {
|
| 1254 |
|
|
*m *= 16;
|
| 1255 |
|
|
*m += *v - '0';
|
| 1256 |
|
|
}
|
| 1257 |
|
|
if (*v >= 'A' && *v <= 'F') {
|
| 1258 |
|
|
*m *= 16;
|
| 1259 |
|
|
*m += *v - 'A' + 10;
|
| 1260 |
|
|
}
|
| 1261 |
|
|
if (*v >= 'a' && *v <= 'f') {
|
| 1262 |
|
|
*m *= 16;
|
| 1263 |
|
|
*m += *v - 'a' + 10;
|
| 1264 |
|
|
}
|
| 1265 |
|
|
if (*v == ':') {
|
| 1266 |
|
|
m++;
|
| 1267 |
|
|
*m = 0;
|
| 1268 |
|
|
}
|
| 1269 |
|
|
}
|
| 1270 |
|
|
sprintf(result, "OK: srcmac");
|
| 1271 |
|
|
return count;
|
| 1272 |
|
|
}
|
| 1273 |
|
|
|
| 1274 |
|
|
if (!strcmp(name, "inject") || !strcmp(name, "start")) {
|
| 1275 |
|
|
MOD_INC_USE_COUNT;
|
| 1276 |
|
|
if (info->busy) {
|
| 1277 |
|
|
strcpy(info->result, "Already running...\n");
|
| 1278 |
|
|
}
|
| 1279 |
|
|
else {
|
| 1280 |
|
|
info->busy = 1;
|
| 1281 |
|
|
strcpy(info->result, "Starting");
|
| 1282 |
|
|
inject(info);
|
| 1283 |
|
|
info->busy = 0;
|
| 1284 |
|
|
}
|
| 1285 |
|
|
MOD_DEC_USE_COUNT;
|
| 1286 |
|
|
return count;
|
| 1287 |
|
|
}
|
| 1288 |
|
|
|
| 1289 |
|
|
sprintf(info->result, "No such parameter \"%s\"", name);
|
| 1290 |
|
|
return -EINVAL;
|
| 1291 |
|
|
}
|
| 1292 |
|
|
|
| 1293 |
|
|
|
| 1294 |
|
|
int create_proc_dir(void)
|
| 1295 |
|
|
{
|
| 1296 |
|
|
int len;
|
| 1297 |
|
|
/* does proc_dir already exists */
|
| 1298 |
|
|
len = strlen(PG_PROC_DIR);
|
| 1299 |
|
|
|
| 1300 |
|
|
for (proc_dir = proc_net->subdir; proc_dir;
|
| 1301 |
|
|
proc_dir=proc_dir->next) {
|
| 1302 |
|
|
if ((proc_dir->namelen == len) &&
|
| 1303 |
|
|
(! memcmp(proc_dir->name, PG_PROC_DIR, len)))
|
| 1304 |
|
|
break;
|
| 1305 |
|
|
}
|
| 1306 |
|
|
if (!proc_dir)
|
| 1307 |
|
|
proc_dir = create_proc_entry(PG_PROC_DIR, S_IFDIR, proc_net);
|
| 1308 |
|
|
if (!proc_dir) return -ENODEV;
|
| 1309 |
|
|
return 1;
|
| 1310 |
|
|
}
|
| 1311 |
|
|
|
| 1312 |
|
|
int remove_proc_dir(void)
|
| 1313 |
|
|
{
|
| 1314 |
|
|
remove_proc_entry(PG_PROC_DIR, proc_net);
|
| 1315 |
|
|
return 1;
|
| 1316 |
|
|
}
|
| 1317 |
|
|
|
| 1318 |
|
|
static int __init init(void)
|
| 1319 |
|
|
{
|
| 1320 |
|
|
int i;
|
| 1321 |
|
|
printk(version);
|
| 1322 |
|
|
cycles_calibrate();
|
| 1323 |
|
|
if (cpu_speed == 0) {
|
| 1324 |
|
|
printk("pktgen: Error: your machine does not have working cycle counter.\n");
|
| 1325 |
|
|
return -EINVAL;
|
| 1326 |
|
|
}
|
| 1327 |
|
|
|
| 1328 |
|
|
create_proc_dir();
|
| 1329 |
|
|
|
| 1330 |
|
|
for (i = 0; i<MAX_PKTGEN; i++) {
|
| 1331 |
|
|
memset(&(pginfos[i]), 0, sizeof(pginfos[i]));
|
| 1332 |
|
|
pginfos[i].pkt_size = ETH_ZLEN;
|
| 1333 |
|
|
pginfos[i].nfrags = 0;
|
| 1334 |
|
|
pginfos[i].clone_skb = clone_skb_d;
|
| 1335 |
|
|
pginfos[i].ipg = ipg_d;
|
| 1336 |
|
|
pginfos[i].count = count_d;
|
| 1337 |
|
|
pginfos[i].sofar = 0;
|
| 1338 |
|
|
pginfos[i].hh[12] = 0x08; /* fill in protocol. Rest is filled in later. */
|
| 1339 |
|
|
pginfos[i].hh[13] = 0x00;
|
| 1340 |
|
|
pginfos[i].udp_src_min = 9; /* sink NULL */
|
| 1341 |
|
|
pginfos[i].udp_src_max = 9;
|
| 1342 |
|
|
pginfos[i].udp_dst_min = 9;
|
| 1343 |
|
|
pginfos[i].udp_dst_max = 9;
|
| 1344 |
|
|
|
| 1345 |
|
|
sprintf(pginfos[i].fname, "net/%s/pg%i", PG_PROC_DIR, i);
|
| 1346 |
|
|
pginfos[i].proc_ent = create_proc_entry(pginfos[i].fname, 0600, 0);
|
| 1347 |
|
|
if (!pginfos[i].proc_ent) {
|
| 1348 |
|
|
printk("pktgen: Error: cannot create net/%s/pg procfs entry.\n", PG_PROC_DIR);
|
| 1349 |
|
|
goto cleanup_mem;
|
| 1350 |
|
|
}
|
| 1351 |
|
|
pginfos[i].proc_ent->read_proc = proc_read;
|
| 1352 |
|
|
pginfos[i].proc_ent->write_proc = proc_write;
|
| 1353 |
|
|
pginfos[i].proc_ent->data = (void*)(long)(i);
|
| 1354 |
|
|
|
| 1355 |
|
|
sprintf(pginfos[i].busy_fname, "net/%s/pg_busy%i", PG_PROC_DIR, i);
|
| 1356 |
|
|
pginfos[i].busy_proc_ent = create_proc_entry(pginfos[i].busy_fname, 0, 0);
|
| 1357 |
|
|
if (!pginfos[i].busy_proc_ent) {
|
| 1358 |
|
|
printk("pktgen: Error: cannot create net/%s/pg_busy procfs entry.\n", PG_PROC_DIR);
|
| 1359 |
|
|
goto cleanup_mem;
|
| 1360 |
|
|
}
|
| 1361 |
|
|
pginfos[i].busy_proc_ent->read_proc = proc_busy_read;
|
| 1362 |
|
|
pginfos[i].busy_proc_ent->data = (void*)(long)(i);
|
| 1363 |
|
|
}
|
| 1364 |
|
|
return 0;
|
| 1365 |
|
|
|
| 1366 |
|
|
cleanup_mem:
|
| 1367 |
|
|
for (i = 0; i<MAX_PKTGEN; i++) {
|
| 1368 |
|
|
if (strlen(pginfos[i].fname)) {
|
| 1369 |
|
|
remove_proc_entry(pginfos[i].fname, NULL);
|
| 1370 |
|
|
}
|
| 1371 |
|
|
if (strlen(pginfos[i].busy_fname)) {
|
| 1372 |
|
|
remove_proc_entry(pginfos[i].busy_fname, NULL);
|
| 1373 |
|
|
}
|
| 1374 |
|
|
}
|
| 1375 |
|
|
return -ENOMEM;
|
| 1376 |
|
|
}
|
| 1377 |
|
|
|
| 1378 |
|
|
|
| 1379 |
|
|
static void __exit cleanup(void)
|
| 1380 |
|
|
{
|
| 1381 |
|
|
int i;
|
| 1382 |
|
|
for (i = 0; i<MAX_PKTGEN; i++) {
|
| 1383 |
|
|
if (strlen(pginfos[i].fname)) {
|
| 1384 |
|
|
remove_proc_entry(pginfos[i].fname, NULL);
|
| 1385 |
|
|
}
|
| 1386 |
|
|
if (strlen(pginfos[i].busy_fname)) {
|
| 1387 |
|
|
remove_proc_entry(pginfos[i].busy_fname, NULL);
|
| 1388 |
|
|
}
|
| 1389 |
|
|
}
|
| 1390 |
|
|
remove_proc_dir();
|
| 1391 |
|
|
}
|
| 1392 |
|
|
|
| 1393 |
|
|
module_init(init);
|
| 1394 |
|
|
module_exit(cleanup);
|
| 1395 |
|
|
|
| 1396 |
|
|
MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
|
| 1397 |
|
|
MODULE_DESCRIPTION("Packet Generator tool");
|
| 1398 |
|
|
MODULE_LICENSE("GPL");
|
| 1399 |
|
|
MODULE_PARM(count_d, "i");
|
| 1400 |
|
|
MODULE_PARM(ipg_d, "i");
|
| 1401 |
|
|
MODULE_PARM(cpu_speed, "i");
|
| 1402 |
|
|
MODULE_PARM(clone_skb_d, "i");
|
| 1403 |
|
|
|
| 1404 |
|
|
|
| 1405 |
|
|
|
