diff options
Diffstat (limited to 'zebra/kernel_netlink.c')
| -rw-r--r-- | zebra/kernel_netlink.c | 52 |
1 files changed, 34 insertions, 18 deletions
diff --git a/zebra/kernel_netlink.c b/zebra/kernel_netlink.c index 42afe61469..a980b56b33 100644 --- a/zebra/kernel_netlink.c +++ b/zebra/kernel_netlink.c @@ -1,21 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Kernel communication using netlink interface. * Copyright (C) 1999 Kunihiro Ishiguro - * - * This file is part of GNU Zebra. - * - * GNU Zebra 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, or (at your option) any - * later version. - * - * GNU Zebra is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; see the file COPYING; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <zebra.h> @@ -124,6 +109,9 @@ static const struct message nlmsg_str[] = {{RTM_NEWROUTE, "RTM_NEWROUTE"}, {RTM_NEWTFILTER, "RTM_NEWTFILTER"}, {RTM_DELTFILTER, "RTM_DELTFILTER"}, {RTM_GETTFILTER, "RTM_GETTFILTER"}, + {RTM_NEWVLAN, "RTM_NEWVLAN"}, + {RTM_DELVLAN, "RTM_DELVLAN"}, + {RTM_GETVLAN, "RTM_GETVLAN"}, {0}}; static const struct message rtproto_str[] = { @@ -432,6 +420,10 @@ static int netlink_information_fetch(struct nlmsghdr *h, ns_id_t ns_id, case RTM_NEWTFILTER: case RTM_DELTFILTER: return netlink_tfilter_change(h, ns_id, startup); + case RTM_NEWVLAN: + return netlink_vlan_change(h, ns_id, startup); + case RTM_DELVLAN: + return netlink_vlan_change(h, ns_id, startup); /* Messages handled in the dplane thread */ case RTM_NEWADDR: @@ -705,6 +697,12 @@ bool nl_attr_put32(struct nlmsghdr *n, unsigned int maxlen, int type, return nl_attr_put(n, maxlen, type, &data, sizeof(uint32_t)); } +bool nl_attr_put64(struct nlmsghdr *n, unsigned int maxlen, int type, + uint64_t data) +{ + return nl_attr_put(n, maxlen, type, &data, sizeof(uint64_t)); +} + struct rtattr *nl_attr_nest(struct nlmsghdr *n, unsigned int maxlen, int type) { struct rtattr *nest = NLMSG_TAIL(n); @@ -1080,7 +1078,8 @@ static int netlink_parse_error(const struct nlsock *nl, struct nlmsghdr *h, nl_msg_type_to_str(msg_type), msg_type, err->msg.nlmsg_seq, err->msg.nlmsg_pid); } else { - if ((msg_type != RTM_GETNEXTHOP) || !startup) + if ((msg_type != RTM_GETNEXTHOP && msg_type != RTM_GETVLAN) || + !startup) flog_err(EC_ZEBRA_UNEXPECTED_MESSAGE, "%s error: %s, type=%s(%u), seq=%u, pid=%u", nl->name, safe_strerror(-errnum), @@ -1761,7 +1760,7 @@ void kernel_init(struct zebra_ns *zns) { uint32_t groups, dplane_groups, ext_groups; #if defined SOL_NETLINK - int one, ret; + int one, ret, grp; #endif /* @@ -1772,6 +1771,11 @@ void kernel_init(struct zebra_ns *zns) * keeping track of all the different values would * lead to confusion, so we need to convert the * RTNLGRP_XXX to a bit position for ourself + * + * + * NOTE: If the bit is >= 32, you must use setsockopt(). Those + * groups are added further below after SOL_NETLINK is verified to + * exist. */ groups = RTMGRP_LINK | RTMGRP_IPV4_ROUTE | @@ -1851,6 +1855,18 @@ void kernel_init(struct zebra_ns *zns) * sure that we want to pull into our build system. */ #if defined SOL_NETLINK + + /* + * setsockopt multicast group subscriptions that don't fit in nl_groups + */ + grp = RTNLGRP_BRVLAN; + ret = setsockopt(zns->netlink.sock, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, + &grp, sizeof(grp)); + + if (ret < 0) + zlog_notice( + "Registration for RTNLGRP_BRVLAN Membership failed : %d %s", + errno, safe_strerror(errno)); /* * Let's tell the kernel that we want to receive extended * ACKS over our command socket(s) |