3eaac6307d
Add support for capturing ethernet packets and storing them in memory in PCAP(2.4) format, later to be analyzed by any PCAP viewer software (IE. Wireshark) This feature greatly assist debugging network issues such as detecting dropped packets, packet corruption etc. Signed-off-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Alex Marginean <alexm.osslist@gmail.com> Tested-by: Alex Marginean <alexm.osslist@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019
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* Ramon Fried <rfried.dev@gmail.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <net.h>
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#include <net/pcap.h>
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static int do_pcap_init(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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phys_addr_t addr;
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unsigned int size;
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if (argc != 3)
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return CMD_RET_USAGE;
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addr = simple_strtoul(argv[1], NULL, 16);
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size = simple_strtoul(argv[2], NULL, 10);
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return pcap_init(addr, size) ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
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}
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static int do_pcap_start(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return pcap_start_stop(true) ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
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}
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static int do_pcap_stop(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return pcap_start_stop(false) ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
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}
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static int do_pcap_status(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return pcap_print_status() ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
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}
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static int do_pcap_clear(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return pcap_clear() ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
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}
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static char pcap_help_text[] =
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"- network packet capture\n\n"
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"pcap\n"
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"pcap init\t\t\t<addr> <max_size>\n"
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"pcap start\t\t\tstart capture\n"
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"pcap stop\t\t\tstop capture\n"
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"pcap status\t\t\tprint status\n"
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"pcap clear\t\t\tclear capture buffer\n"
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"\n"
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"With:\n"
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"\t<addr>: user address to which pcap will be stored (hexedcimal)\n"
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"\t<max_size>: Maximum size of pcap file (decimal)\n"
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"\n";
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U_BOOT_CMD_WITH_SUBCMDS(pcap, "pcap", pcap_help_text,
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U_BOOT_SUBCMD_MKENT(init, 3, 0, do_pcap_init),
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U_BOOT_SUBCMD_MKENT(start, 1, 0, do_pcap_start),
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U_BOOT_SUBCMD_MKENT(stop, 1, 0, do_pcap_stop),
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U_BOOT_SUBCMD_MKENT(status, 1, 0, do_pcap_status),
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U_BOOT_SUBCMD_MKENT(clear, 1, 0, do_pcap_clear),
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);
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