[lotest] Add loopback testing commands
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
parent
0d6b1d98fa
commit
1c7f47895c
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@ -231,6 +231,9 @@ REQUIRE_OBJECT ( digest_cmd );
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#ifdef PXE_CMD
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REQUIRE_OBJECT ( pxe_cmd );
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#endif
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#ifdef LOTEST_CMD
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REQUIRE_OBJECT ( lotest_cmd );
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#endif
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/*
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* Drag in miscellaneous objects
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@ -122,6 +122,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define LOGIN_CMD /* Login command */
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#undef TIME_CMD /* Time commands */
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#undef DIGEST_CMD /* Image crypto digest commands */
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#undef LOTEST_CMD /* Loopback testing commands */
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//#undef PXE_CMD /* PXE commands */
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/*
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@ -0,0 +1,114 @@
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/*
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* Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
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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 as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/command.h>
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#include <ipxe/if_ether.h>
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#include <usr/lotest.h>
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/** @file
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*
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* Loopback testing commands
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*
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*/
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static void lotest_syntax ( char **argv ) {
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printf ( "Usage:\n %s <sending interface> <receiving interface>\n",
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argv[0] );
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}
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static int lotest_exec ( int argc, char **argv ) {
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static struct option lotest_opts[] = {
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{ "help", 0, NULL, 'h' },
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{ "mtu", required_argument, NULL, 'm' },
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{ NULL, 0, NULL, 0 },
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};
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const char *sender_name;
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const char *receiver_name;
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const char *mtu_text = NULL;
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struct net_device *sender;
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struct net_device *receiver;
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char *endp;
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size_t mtu;
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int c;
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int rc;
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/* Parse command line */
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while ( ( c = getopt_long ( argc, argv, "hm:", lotest_opts,
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NULL ) ) >= 0 ) {
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switch ( c ) {
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case 'm':
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mtu_text = optarg;
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break;
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case 'h':
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/* Display help text */
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default:
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/* Unrecognised/invalid option */
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lotest_syntax ( argv );
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return 1;
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}
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}
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if ( optind != ( argc - 2 ) ) {
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lotest_syntax ( argv );
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return 1;
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}
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sender_name = argv[optind];
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receiver_name = argv[optind + 1];
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/* Identify network devices */
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sender = find_netdev ( sender_name );
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if ( ! sender ) {
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printf ( "%s: no such interface\n", sender_name );
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return 1;
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}
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receiver = find_netdev ( receiver_name );
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if ( ! receiver ) {
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printf ( "%s: no such interface\n", receiver_name );
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return 1;
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}
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/* Identify MTU */
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if ( mtu_text ) {
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mtu = strtoul ( mtu_text, &endp, 10 );
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if ( *endp ) {
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printf ( "%s: invalid MTU\n", mtu_text );
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return 1;
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}
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} else {
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mtu = ETH_MAX_MTU;
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}
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/* Perform loopback test */
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if ( ( rc = loopback_test ( sender, receiver, mtu ) ) != 0 ) {
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printf ( "Test failed: %s\n", strerror ( rc ) );
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return 1;
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}
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return 0;
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}
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struct command lotest_command __command = {
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.name = "lotest",
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.exec = lotest_exec,
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};
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@ -223,6 +223,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define ERRFILE_ib_srpboot ( ERRFILE_OTHER | 0x00180000 )
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#define ERRFILE_iwmgmt ( ERRFILE_OTHER | 0x00190000 )
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#define ERRFILE_linux_smbios ( ERRFILE_OTHER | 0x001a0000 )
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#define ERRFILE_lotest ( ERRFILE_OTHER | 0x001b0000 )
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/** @} */
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@ -0,0 +1,210 @@
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/*
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* Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
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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 as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <byteswap.h>
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#include <ipxe/iobuf.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/if_ether.h>
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#include <ipxe/keys.h>
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#include <console.h>
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#include <usr/ifmgmt.h>
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#include <usr/lotest.h>
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/** @file
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*
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* Loopback testing
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*
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*/
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#define LINK_WAIT_MS 15000
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/**
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* Process received packet
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*
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* @v iobuf I/O buffer
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* @v netdev Network device
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* @v ll_source Link-layer source address
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* @ret rc Return status code
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*/
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static int lotest_rx ( struct io_buffer *iobuf,
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struct net_device *netdev __unused,
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const void *ll_source __unused ) {
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free_iob ( iobuf );
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return -ENOTSUP;
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}
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/**
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* Transcribe network-layer address
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*
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* @v net_addr Network-layer address
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* @ret string Human-readable transcription of address
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*/
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static const char * lotest_ntoa ( const void *net_addr __unused ) {
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return "<INVALID>";
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}
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/**
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* Loopback test network-layer protocol
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*
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* Using a dedicated network-layer protocol avoids problems caused by
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* cards supporting features such as IPv4 checksum offload trying to
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* interpret the (randomly generated) network-layer content.
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*/
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static struct net_protocol lotest_protocol __net_protocol = {
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.name = "LOTEST",
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.rx = lotest_rx,
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.ntoa = lotest_ntoa,
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.net_proto = htons ( 0x6950 ), /* Not a genuine protocol number */
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.net_addr_len = 0,
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};
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/**
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* Perform loopback test between two network devices
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*
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* @v sender Sending network device
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* @v receiver Received network device
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* @v mtu Packet size (excluding link-layer headers)
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* @ret rc Return status code
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*/
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int loopback_test ( struct net_device *sender, struct net_device *receiver,
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size_t mtu ) {
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uint8_t buf[mtu];
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struct io_buffer *iobuf;
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const void *ll_dest;
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const void *ll_source;
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uint16_t net_proto;
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unsigned int i;
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unsigned int successes;
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int rc;
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/* Open network devices */
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if ( ( rc = ifopen ( sender ) ) != 0 )
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return rc;
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if ( ( rc = ifopen ( receiver ) ) != 0 )
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return rc;
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/* Wait for link-up */
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if ( ( rc = iflinkwait ( sender, LINK_WAIT_MS ) ) != 0 )
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return rc;
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if ( ( rc = iflinkwait ( receiver, LINK_WAIT_MS ) ) != 0 )
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return rc;
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/* Print initial statistics */
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printf ( "Performing loopback test from %s to %s with %zd byte MTU\n",
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sender->name, receiver->name, mtu );
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ifstat ( sender );
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ifstat ( receiver );
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/* Perform loopback test */
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for ( successes = 0 ; ; successes++ ) {
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/* Print running total */
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printf ( "\r%d", successes );
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/* Generate random packet */
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for ( i = 0 ; i < sizeof ( buf ) ; i++ )
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buf[i] = random();
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iobuf = alloc_iob ( MAX_LL_HEADER_LEN + sizeof ( buf ) );
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if ( ! iobuf ) {
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printf ( "\nFailed to allocate I/O buffer" );
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rc = -ENOMEM;
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goto done;
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}
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iob_reserve ( iobuf, MAX_LL_HEADER_LEN );
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memcpy ( iob_put ( iobuf, sizeof ( buf ) ),
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buf, sizeof ( buf ) );
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/* Transmit packet */
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if ( ( rc = net_tx ( iob_disown ( iobuf ), sender,
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&lotest_protocol,
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receiver->ll_addr ) ) != 0 ) {
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printf ( "\nFailed to transmit packet: %s",
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strerror ( rc ) );
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goto done;
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}
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/* Poll until packet arrives */
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do {
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/* Check for cancellation */
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if ( iskey() && ( getchar() == CTRL_C ) ) {
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rc = -ECANCELED;
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goto done;
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}
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/* Poll network devices */
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netdev_poll ( sender );
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netdev_poll ( receiver );
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} while ( ( iobuf = netdev_rx_dequeue ( receiver ) ) == NULL );
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/* Check received packet */
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if ( ( rc = receiver->ll_protocol->pull ( receiver, iobuf,
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&ll_dest, &ll_source,
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&net_proto ) ) != 0 ){
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printf ( "\nFailed to strip link-layer header: %s",
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strerror ( rc ) );
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goto done;
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}
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if ( net_proto == lotest_protocol.net_proto ) {
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if ( iob_len ( iobuf ) != sizeof ( buf ) ) {
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printf ( "\nLength mismatch: sent %zd, "
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"received %zd",
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sizeof ( buf ), iob_len ( iobuf ) );
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DBG ( "\nSent:\n" );
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DBG_HDA ( 0, buf, sizeof ( buf ) );
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DBG ( "Received:\n" );
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DBG_HDA ( 0, iobuf->data, iob_len ( iobuf ) );
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rc = -EINVAL;
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goto done;
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}
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if ( memcmp ( iobuf->data, buf, sizeof ( buf ) ) != 0){
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printf ( "\nContent mismatch" );
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DBG ( "\nSent:\n" );
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DBG_HDA ( 0, buf, sizeof ( buf ) );
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DBG ( "Received:\n" );
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DBG_HDA ( 0, iobuf->data, iob_len ( iobuf ) );
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rc = -EINVAL;
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goto done;
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}
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} else {
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printf ( "\nReceived spurious packet type %04x\n",
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net_proto );
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/* Continue; this allows for the fact that
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* there may have been packets outstanding on
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* the wire when we started the test.
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*/
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}
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free_iob ( iob_disown ( iobuf ) );
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}
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done:
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printf ( "\n");
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free_iob ( iobuf );
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/* Dump final statistics */
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ifstat ( sender );
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ifstat ( receiver );
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return 0;
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}
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@ -0,0 +1,15 @@
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#ifndef _USR_LOTEST_H
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#define _USR_LOTEST_H
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/** @file
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*
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* Loopback testing
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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extern int loopback_test ( struct net_device *sender,
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struct net_device *receiver, size_t mtu );
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#endif /* _USR_LOTEST_H */
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