| /* iplink_ipvlan.c IPVLAN/IPVTAP device support |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Mahesh Bandewar <maheshb@google.com> |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <linux/if_link.h> |
| |
| #include "rt_names.h" |
| #include "utils.h" |
| #include "ip_common.h" |
| |
| static void print_explain(struct link_util *lu, FILE *f) |
| { |
| fprintf(f, |
| "Usage: ... %s [ mode MODE ] [ FLAGS ]\n" |
| "\n" |
| "MODE: l3 | l3s | l2\n" |
| "FLAGS: bridge | private | vepa\n" |
| "(first values are the defaults if nothing is specified).\n", |
| lu->id); |
| } |
| |
| static int ipvlan_parse_opt(struct link_util *lu, int argc, char **argv, |
| struct nlmsghdr *n) |
| { |
| __u16 flags = 0; |
| bool mflag_given = false; |
| |
| while (argc > 0) { |
| if (matches(*argv, "mode") == 0) { |
| __u16 mode = 0; |
| |
| NEXT_ARG(); |
| |
| if (strcmp(*argv, "l2") == 0) |
| mode = IPVLAN_MODE_L2; |
| else if (strcmp(*argv, "l3") == 0) |
| mode = IPVLAN_MODE_L3; |
| else if (strcmp(*argv, "l3s") == 0) |
| mode = IPVLAN_MODE_L3S; |
| else { |
| fprintf(stderr, "Error: argument of \"mode\" must be either \"l2\", \"l3\" or \"l3s\"\n"); |
| return -1; |
| } |
| addattr16(n, 1024, IFLA_IPVLAN_MODE, mode); |
| } else if (matches(*argv, "private") == 0 && !mflag_given) { |
| flags |= IPVLAN_F_PRIVATE; |
| mflag_given = true; |
| } else if (matches(*argv, "vepa") == 0 && !mflag_given) { |
| flags |= IPVLAN_F_VEPA; |
| mflag_given = true; |
| } else if (matches(*argv, "bridge") == 0 && !mflag_given) { |
| mflag_given = true; |
| } else if (matches(*argv, "help") == 0) { |
| print_explain(lu, stderr); |
| return -1; |
| } else { |
| fprintf(stderr, "%s: unknown option \"%s\"?\n", |
| lu->id, *argv); |
| print_explain(lu, stderr); |
| return -1; |
| } |
| argc--; |
| argv++; |
| } |
| addattr16(n, 1024, IFLA_IPVLAN_FLAGS, flags); |
| |
| return 0; |
| } |
| |
| static void ipvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) |
| { |
| |
| if (!tb) |
| return; |
| |
| if (tb[IFLA_IPVLAN_MODE]) { |
| if (RTA_PAYLOAD(tb[IFLA_IPVLAN_MODE]) == sizeof(__u16)) { |
| __u16 mode = rta_getattr_u16(tb[IFLA_IPVLAN_MODE]); |
| const char *mode_str = mode == IPVLAN_MODE_L2 ? "l2" : |
| mode == IPVLAN_MODE_L3 ? "l3" : |
| mode == IPVLAN_MODE_L3S ? "l3s" : "unknown"; |
| |
| print_string(PRINT_ANY, "mode", " mode %s ", mode_str); |
| } |
| } |
| if (tb[IFLA_IPVLAN_FLAGS]) { |
| if (RTA_PAYLOAD(tb[IFLA_IPVLAN_FLAGS]) == sizeof(__u16)) { |
| __u16 flags = rta_getattr_u16(tb[IFLA_IPVLAN_FLAGS]); |
| |
| if (flags & IPVLAN_F_PRIVATE) |
| print_bool(PRINT_ANY, "private", "private ", |
| true); |
| else if (flags & IPVLAN_F_VEPA) |
| print_bool(PRINT_ANY, "vepa", "vepa ", |
| true); |
| else |
| print_bool(PRINT_ANY, "bridge", "bridge ", |
| true); |
| } |
| } |
| } |
| |
| static void ipvlan_print_help(struct link_util *lu, int argc, char **argv, |
| FILE *f) |
| { |
| print_explain(lu, f); |
| } |
| |
| struct link_util ipvlan_link_util = { |
| .id = "ipvlan", |
| .maxattr = IFLA_IPVLAN_MAX, |
| .parse_opt = ipvlan_parse_opt, |
| .print_opt = ipvlan_print_opt, |
| .print_help = ipvlan_print_help, |
| }; |
| |
| struct link_util ipvtap_link_util = { |
| .id = "ipvtap", |
| .maxattr = IFLA_IPVLAN_MAX, |
| .parse_opt = ipvlan_parse_opt, |
| .print_opt = ipvlan_print_opt, |
| .print_help = ipvlan_print_help, |
| }; |