/* * iplink_vlan.c VLAN 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: Patrick McHardy */ #include #include #include #include #include "rt_names.h" #include "utils.h" #include "ip_common.h" static void print_explain(FILE *f) { fprintf(f, "Usage: ... vlan id VLANID\n" " [ protocol VLANPROTO ]\n" " [ reorder_hdr { on | off } ]\n" " [ gvrp { on | off } ]\n" " [ mvrp { on | off } ]\n" " [ loose_binding { on | off } ]\n" " [ ingress-qos-map QOS-MAP ]\n" " [ egress-qos-map QOS-MAP ]\n" "\n" "VLANID := 0-4095\n" "VLANPROTO: [ 802.1Q / 802.1ad ]\n" "QOS-MAP := [ QOS-MAP ] QOS-MAPPING\n" "QOS-MAPPING := FROM:TO\n" ); } static void explain(void) { print_explain(stderr); } static int on_off(const char *msg, const char *arg) { fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", msg, arg); return -1; } static int vlan_parse_qos_map(int *argcp, char ***argvp, struct nlmsghdr *n, int attrtype) { int argc = *argcp; char **argv = *argvp; struct ifla_vlan_qos_mapping m; struct rtattr *tail; tail = addattr_nest(n, 1024, attrtype); while (argc > 0) { char *colon = strchr(*argv, ':'); if (!colon) break; *colon = '\0'; if (get_u32(&m.from, *argv, 0)) return 1; if (get_u32(&m.to, colon + 1, 0)) return 1; argc--, argv++; addattr_l(n, 1024, IFLA_VLAN_QOS_MAPPING, &m, sizeof(m)); } addattr_nest_end(n, tail); *argcp = argc; *argvp = argv; return 0; } static int vlan_parse_opt(struct link_util *lu, int argc, char **argv, struct nlmsghdr *n) { struct ifla_vlan_flags flags = { 0 }; __u16 id, proto; while (argc > 0) { if (matches(*argv, "protocol") == 0) { NEXT_ARG(); if (ll_proto_a2n(&proto, *argv)) invarg("protocol is invalid", *argv); addattr_l(n, 1024, IFLA_VLAN_PROTOCOL, &proto, 2); } else if (matches(*argv, "id") == 0) { NEXT_ARG(); if (get_u16(&id, *argv, 0)) invarg("id is invalid", *argv); addattr_l(n, 1024, IFLA_VLAN_ID, &id, 2); } else if (matches(*argv, "reorder_hdr") == 0) { NEXT_ARG(); flags.mask |= VLAN_FLAG_REORDER_HDR; if (strcmp(*argv, "on") == 0) flags.flags |= VLAN_FLAG_REORDER_HDR; else if (strcmp(*argv, "off") == 0) flags.flags &= ~VLAN_FLAG_REORDER_HDR; else return on_off("reorder_hdr", *argv); } else if (matches(*argv, "gvrp") == 0) { NEXT_ARG(); flags.mask |= VLAN_FLAG_GVRP; if (strcmp(*argv, "on") == 0) flags.flags |= VLAN_FLAG_GVRP; else if (strcmp(*argv, "off") == 0) flags.flags &= ~VLAN_FLAG_GVRP; else return on_off("gvrp", *argv); } else if (matches(*argv, "mvrp") == 0) { NEXT_ARG(); flags.mask |= VLAN_FLAG_MVRP; if (strcmp(*argv, "on") == 0) flags.flags |= VLAN_FLAG_MVRP; else if (strcmp(*argv, "off") == 0) flags.flags &= ~VLAN_FLAG_MVRP; else return on_off("mvrp", *argv); } else if (matches(*argv, "loose_binding") == 0) { NEXT_ARG(); flags.mask |= VLAN_FLAG_LOOSE_BINDING; if (strcmp(*argv, "on") == 0) flags.flags |= VLAN_FLAG_LOOSE_BINDING; else if (strcmp(*argv, "off") == 0) flags.flags &= ~VLAN_FLAG_LOOSE_BINDING; else return on_off("loose_binding", *argv); } else if (matches(*argv, "ingress-qos-map") == 0) { NEXT_ARG(); if (vlan_parse_qos_map(&argc, &argv, n, IFLA_VLAN_INGRESS_QOS)) invarg("invalid ingress-qos-map", *argv); continue; } else if (matches(*argv, "egress-qos-map") == 0) { NEXT_ARG(); if (vlan_parse_qos_map(&argc, &argv, n, IFLA_VLAN_EGRESS_QOS)) invarg("invalid egress-qos-map", *argv); continue; } else if (matches(*argv, "help") == 0) { explain(); return -1; } else { fprintf(stderr, "vlan: unknown command \"%s\"?\n", *argv); explain(); return -1; } argc--, argv++; } if (flags.mask) addattr_l(n, 1024, IFLA_VLAN_FLAGS, &flags, sizeof(flags)); return 0; } static void vlan_print_map(FILE *f, const char *name_json, const char *name_fp, struct rtattr *attr) { struct ifla_vlan_qos_mapping *m; struct rtattr *i; int rem; open_json_array(PRINT_JSON, name_json); print_string(PRINT_FP, NULL, "\n %s { ", name_fp); rem = RTA_PAYLOAD(attr); for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { m = RTA_DATA(i); if (is_json_context()) { open_json_object(NULL); print_uint(PRINT_JSON, "from", NULL, m->from); print_uint(PRINT_JSON, "to", NULL, m->to); close_json_object(); } else { fprintf(f, "%u:%u ", m->from, m->to); } } close_json_array(PRINT_JSON, NULL); print_string(PRINT_FP, NULL, "%s ", "}"); } static void vlan_print_flags(FILE *fp, __u32 flags) { open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<"); #define _PF(f) if (flags & VLAN_FLAG_##f) { \ flags &= ~VLAN_FLAG_##f; \ print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); \ } _PF(REORDER_HDR); _PF(GVRP); _PF(MVRP); _PF(LOOSE_BINDING); #undef _PF if (flags) print_hex(PRINT_ANY, NULL, "%x", flags); close_json_array(PRINT_ANY, "> "); } static void vlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) { struct ifla_vlan_flags *flags; SPRINT_BUF(b1); if (!tb) return; if (tb[IFLA_VLAN_PROTOCOL] && RTA_PAYLOAD(tb[IFLA_VLAN_PROTOCOL]) < sizeof(__u16)) return; if (!tb[IFLA_VLAN_ID] || RTA_PAYLOAD(tb[IFLA_VLAN_ID]) < sizeof(__u16)) return; if (tb[IFLA_VLAN_PROTOCOL]) print_string(PRINT_ANY, "protocol", "protocol %s ", ll_proto_n2a( rta_getattr_u16(tb[IFLA_VLAN_PROTOCOL]), b1, sizeof(b1))); else print_string(PRINT_ANY, "protocol", "protocol %s ", "802.1q"); print_uint(PRINT_ANY, "id", "id %u ", rta_getattr_u16(tb[IFLA_VLAN_ID])); if (tb[IFLA_VLAN_FLAGS]) { if (RTA_PAYLOAD(tb[IFLA_VLAN_FLAGS]) < sizeof(*flags)) return; flags = RTA_DATA(tb[IFLA_VLAN_FLAGS]); vlan_print_flags(f, flags->flags); } if (tb[IFLA_VLAN_INGRESS_QOS]) vlan_print_map(f, "ingress_qos", "ingress-qos-map", tb[IFLA_VLAN_INGRESS_QOS]); if (tb[IFLA_VLAN_EGRESS_QOS]) vlan_print_map(f, "egress_qos", "egress-qos-map", tb[IFLA_VLAN_EGRESS_QOS]); } static void vlan_print_help(struct link_util *lu, int argc, char **argv, FILE *f) { print_explain(f); } struct link_util vlan_link_util = { .id = "vlan", .maxattr = IFLA_VLAN_MAX, .parse_opt = vlan_parse_opt, .print_opt = vlan_print_opt, .print_help = vlan_print_help, };