diff options
Diffstat (limited to 'zebra/interface.c')
| -rw-r--r-- | zebra/interface.c | 103 |
1 files changed, 98 insertions, 5 deletions
diff --git a/zebra/interface.c b/zebra/interface.c index ec1f16f671..a68d00d55c 100644 --- a/zebra/interface.c +++ b/zebra/interface.c @@ -1205,14 +1205,107 @@ void zebra_if_set_protodown(struct interface *ifp, bool down) #endif } -/* Handler for incoming intf address change events */ +/* + * Handle an interface addr event based on info in a dplane context object. + * This runs in the main pthread, using the info in the context object to + * modify an interface. + */ void zebra_if_addr_update_ctx(struct zebra_dplane_ctx *ctx) { -#ifdef HAVE_NETLINK - netlink_interface_addr_ctx(ctx); -#else + struct interface *ifp; + uint8_t flags = 0; + const char *label = NULL; + ns_id_t ns_id; + struct zebra_ns *zns; + uint32_t metric = METRIC_MAX; + ifindex_t ifindex; + const struct prefix *addr, *dest = NULL; + enum dplane_op_e op; + + op = dplane_ctx_get_op(ctx); + ns_id = dplane_ctx_get_ns_id(ctx); + + zns = zebra_ns_lookup(ns_id); + if (zns == NULL) { + /* No ns - deleted maybe? */ + if (IS_ZEBRA_DEBUG_KERNEL) + zlog_debug("%s: can't find zns id %u", __func__, ns_id); + goto done; + } + + ifindex = dplane_ctx_get_ifindex(ctx); + + ifp = if_lookup_by_index_per_ns(zns, ifindex); + if (ifp == NULL) { + if (IS_ZEBRA_DEBUG_KERNEL) + zlog_debug("%s: can't find ifp at nsid %u index %d", + __func__, ns_id, ifindex); + goto done; + } + + addr = dplane_ctx_get_intf_addr(ctx); + + if (IS_ZEBRA_DEBUG_KERNEL) + zlog_debug("%s: %s: ifindex %u, addr %pFX", __func__, + dplane_op2str(op), ifindex, addr); + + /* Is there a peer or broadcast address? */ + dest = dplane_ctx_get_intf_dest(ctx); + if (dest->prefixlen == 0) + dest = NULL; + + if (dplane_ctx_intf_is_connected(ctx)) + SET_FLAG(flags, ZEBRA_IFA_PEER); + + /* Flags. */ + if (dplane_ctx_intf_is_secondary(ctx)) + SET_FLAG(flags, ZEBRA_IFA_SECONDARY); + + /* Label? */ + if (dplane_ctx_intf_has_label(ctx)) + label = dplane_ctx_get_intf_label(ctx); + + if (label && strcmp(ifp->name, label) == 0) + label = NULL; + + metric = dplane_ctx_get_intf_metric(ctx); + + /* Register interface address to the interface. */ + if (addr->family == AF_INET) { + if (op == DPLANE_OP_INTF_ADDR_ADD) + connected_add_ipv4( + ifp, flags, &addr->u.prefix4, addr->prefixlen, + dest ? &dest->u.prefix4 : NULL, label, metric); + else if (CHECK_FLAG(flags, ZEBRA_IFA_PEER)) { + /* Delete with a peer address */ + connected_delete_ipv4(ifp, flags, &addr->u.prefix4, + addr->prefixlen, + &dest->u.prefix4); + } else + connected_delete_ipv4(ifp, flags, &addr->u.prefix4, + addr->prefixlen, NULL); + } + + if (addr->family == AF_INET6) { + if (op == DPLANE_OP_INTF_ADDR_ADD) { + connected_add_ipv6(ifp, flags, &addr->u.prefix6, + dest ? &dest->u.prefix6 : NULL, + addr->prefixlen, label, metric); + } else + connected_delete_ipv6(ifp, &addr->u.prefix6, NULL, + addr->prefixlen); + } + + /* + * Linux kernel does not send route delete on interface down/addr del + * so we have to re-process routes it owns (i.e. kernel routes) + */ + if (op != DPLANE_OP_INTF_ADDR_ADD) + rib_update(RIB_UPDATE_KERNEL); + +done: + /* We're responsible for the ctx object */ dplane_ctx_fini(&ctx); -#endif /* HAVE_NETLINK */ } /* Dump if address information to vty. */ |