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1ef5c95201
IPvlan supported bridge-only functionality prior to commits
a190d04db937 ('ipvlan: introduce 'private' attribute for all
existing modes.') and fe89aa6b250c ('ipvlan: implement VEPA mode').
These two commits allow to configure the VEPA and private modes now.
This patch adds those options in ip command.
e.g.
bash:~# ip link add link eth0 name ipvl0 type ipvlan mode l2 private
-or-
bash:~# ip link add link eth0 type ipvl0 type ipvlan mode l2 vepa
Also the output will reflect the mode and the mode-flag accordingly.
e.g.
bash:~# ip -details link show ipvl0
4: ipvl0@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc ...
link/ether 00:1a:11:44:a5:3e brd ff:ff:ff:ff:ff:ff promiscuity 0
ipvlan mode l2 private addrgenmode eui64 numtxqueues 1 ...
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/* iplink_ipvlan.c IPVLAN 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: Mahesh Bandewar <maheshb@google.com>
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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 <sys/socket.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 ipvlan_explain(FILE *f)
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{
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fprintf(f,
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"Usage: ... ipvlan [ mode MODE ] [ FLAGS ]\n"
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"\n"
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"MODE: l3 | l3s | l2\n"
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"FLAGS: bridge | private | vepa\n"
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"(first values are the defaults if nothing is specified).\n"
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);
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}
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static int ipvlan_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 flags = 0;
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bool mflag_given = false;
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while (argc > 0) {
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if (matches(*argv, "mode") == 0) {
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__u16 mode = 0;
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NEXT_ARG();
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if (strcmp(*argv, "l2") == 0)
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mode = IPVLAN_MODE_L2;
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else if (strcmp(*argv, "l3") == 0)
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mode = IPVLAN_MODE_L3;
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else if (strcmp(*argv, "l3s") == 0)
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mode = IPVLAN_MODE_L3S;
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else {
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fprintf(stderr, "Error: argument of \"mode\" must be either \"l2\", \"l3\" or \"l3s\"\n");
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return -1;
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}
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addattr16(n, 1024, IFLA_IPVLAN_MODE, mode);
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} else if (matches(*argv, "private") == 0 && !mflag_given) {
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flags |= IPVLAN_F_PRIVATE;
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mflag_given = true;
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} else if (matches(*argv, "vepa") == 0 && !mflag_given) {
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flags |= IPVLAN_F_VEPA;
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mflag_given = true;
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} else if (matches(*argv, "bridge") == 0 && !mflag_given) {
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mflag_given = true;
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} else if (matches(*argv, "help") == 0) {
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ipvlan_explain(stderr);
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return -1;
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} else {
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fprintf(stderr, "ipvlan: unknown option \"%s\"?\n",
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*argv);
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ipvlan_explain(stderr);
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return -1;
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}
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argc--;
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argv++;
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}
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addattr16(n, 1024, IFLA_IPVLAN_FLAGS, flags);
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return 0;
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}
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static void ipvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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if (!tb)
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return;
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if (tb[IFLA_IPVLAN_MODE]) {
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if (RTA_PAYLOAD(tb[IFLA_IPVLAN_MODE]) == sizeof(__u16)) {
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__u16 mode = rta_getattr_u16(tb[IFLA_IPVLAN_MODE]);
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const char *mode_str = mode == IPVLAN_MODE_L2 ? "l2" :
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mode == IPVLAN_MODE_L3 ? "l3" :
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mode == IPVLAN_MODE_L3S ? "l3s" : "unknown";
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print_string(PRINT_ANY, "mode", " mode %s ", mode_str);
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}
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}
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if (tb[IFLA_IPVLAN_FLAGS]) {
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if (RTA_PAYLOAD(tb[IFLA_IPVLAN_FLAGS]) == sizeof(__u16)) {
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__u16 flags = rta_getattr_u16(tb[IFLA_IPVLAN_FLAGS]);
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if (flags & IPVLAN_F_PRIVATE)
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print_bool(PRINT_ANY, "private", "private ",
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true);
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else if (flags & IPVLAN_F_VEPA)
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print_bool(PRINT_ANY, "vepa", "vepa ",
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true);
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else
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print_bool(PRINT_ANY, "bridge", "bridge ",
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true);
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}
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}
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}
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static void ipvlan_print_help(struct link_util *lu, int argc, char **argv,
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FILE *f)
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{
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ipvlan_explain(f);
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}
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struct link_util ipvlan_link_util = {
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.id = "ipvlan",
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.maxattr = IFLA_IPVLAN_MAX,
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.parse_opt = ipvlan_parse_opt,
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.print_opt = ipvlan_print_opt,
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.print_help = ipvlan_print_help,
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};
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