mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-16 22:45:17 +08:00
561e650eff
Allow to print particular link type usage by:
ip link help [TYPE]
Currently to print usage for some link type it is needed
to use the following way:
ip link { add | del | set } type TYPE help
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
/*
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* iplink_ipoib.c IPoIB device support
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Or Gerlitz <ogerlitz@mellanox.com>
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* copied iflink_vlan.c authored by Patrick McHardy <kaber@trash.net>
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*/
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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 <linux/if_link.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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static void print_explain(FILE *f)
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{
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fprintf(f,
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"Usage: ... ipoib [pkey PKEY] [mode {datagram | connected}]"
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"[umcast {0|1}]\n"
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"\n"
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"PKEY := 0x8001-0xffff\n"
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);
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}
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static void explain(void)
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{
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print_explain(stderr);
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}
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static int mode_arg(void)
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{
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fprintf(stderr, "Error: argument of \"mode\" must be \"datagram\""
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"or \"connected\"\n");
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return -1;
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}
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static int ipoib_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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__u16 pkey, mode, umcast;
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while (argc > 0) {
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if (matches(*argv, "pkey") == 0) {
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NEXT_ARG();
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if (get_u16(&pkey, *argv, 0))
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invarg("pkey is invalid", *argv);
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addattr_l(n, 1024, IFLA_IPOIB_PKEY, &pkey, 2);
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} else if (matches(*argv, "mode") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "datagram") == 0)
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mode = IPOIB_MODE_DATAGRAM;
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else if (strcmp(*argv, "connected") == 0)
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mode = IPOIB_MODE_CONNECTED;
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else
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return mode_arg();
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addattr_l(n, 1024, IFLA_IPOIB_MODE, &mode, 2);
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} else if (matches(*argv, "umcast") == 0) {
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NEXT_ARG();
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if (get_u16(&umcast, *argv, 0))
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invarg("umcast is invalid", *argv);
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addattr_l(n, 1024, IFLA_IPOIB_UMCAST, &umcast, 2);
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} else if (matches(*argv, "help") == 0) {
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explain();
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return -1;
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} else {
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fprintf(stderr, "ipoib: unknown option \"%s\"?\n", *argv);
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explain();
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return -1;
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}
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argc--, argv++;
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}
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return 0;
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}
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static void ipoib_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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__u16 mode;
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if (!tb)
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return;
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if (!tb[IFLA_IPOIB_PKEY] ||
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RTA_PAYLOAD(tb[IFLA_IPOIB_PKEY]) < sizeof(__u16))
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return;
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fprintf(f, "pkey %#.4x ", rta_getattr_u16(tb[IFLA_IPOIB_PKEY]));
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if (!tb[IFLA_IPOIB_MODE] ||
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RTA_PAYLOAD(tb[IFLA_IPOIB_MODE]) < sizeof(__u16))
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return;
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mode = rta_getattr_u16(tb[IFLA_IPOIB_MODE]);
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fprintf(f, "mode %s ",
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mode == IPOIB_MODE_DATAGRAM ? "datagram" :
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mode == IPOIB_MODE_CONNECTED ? "connected" :
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"unknown");
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if (!tb[IFLA_IPOIB_UMCAST] ||
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RTA_PAYLOAD(tb[IFLA_IPOIB_UMCAST]) < sizeof(__u16))
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return;
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fprintf(f, "umcast %.4x ", rta_getattr_u16(tb[IFLA_IPOIB_UMCAST]));
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}
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static void ipoib_print_help(struct link_util *lu, int argc, char **argv,
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FILE *f)
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{
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print_explain(f);
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}
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struct link_util ipoib_link_util = {
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.id = "ipoib",
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.maxattr = IFLA_IPOIB_MAX,
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.parse_opt = ipoib_parse_opt,
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.print_opt = ipoib_print_opt,
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.print_help = ipoib_print_help,
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};
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