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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:18:53 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:18:53 +0000 |
commit | a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 (patch) | |
tree | 8feaf1a1932871b139b3b30be4c09c66489918be /ip/iplink_ipvlan.c | |
parent | Initial commit. (diff) | |
download | iproute2-upstream.tar.xz iproute2-upstream.zip |
Adding upstream version 6.1.0.upstream/6.1.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | ip/iplink_ipvlan.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/ip/iplink_ipvlan.c b/ip/iplink_ipvlan.c new file mode 100644 index 0000000..baae767 --- /dev/null +++ b/ip/iplink_ipvlan.c @@ -0,0 +1,133 @@ +/* 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, +}; |