2023-03-09 14:43:56 +00:00
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2023 Alexander V. Chernikov <melifaro@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETLINK_NETLINK_SNL_ROUTE_PARSERS_H_
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#define _NETLINK_NETLINK_SNL_ROUTE_PARSERS_H_
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#include <netlink/netlink_snl.h>
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2023-03-09 15:44:59 +00:00
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#include <netlink/netlink_snl_route.h>
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2023-04-25 11:14:12 +00:00
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#include <netlink/route/nexthop.h>
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2023-03-09 14:43:56 +00:00
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/* TODO: this file should be generated automatically */
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2023-05-09 14:55:47 +00:00
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static inline void
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finalize_sockaddr(struct sockaddr *sa, uint32_t ifindex)
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{
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if (sa != NULL && sa->sa_family == AF_INET6) {
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)(void *)sa;
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if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
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sin6->sin6_scope_id = ifindex;
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}
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}
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2023-03-09 14:43:56 +00:00
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/* RTM_<NEW|DEL|GET>ROUTE message parser */
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struct rta_mpath_nh {
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struct sockaddr *gw;
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uint32_t ifindex;
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uint8_t rtnh_flags;
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uint8_t rtnh_weight;
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uint32_t rtax_mtu;
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uint32_t rta_rtflags;
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};
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#define _IN(_field) offsetof(struct rtnexthop, _field)
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#define _OUT(_field) offsetof(struct rta_mpath_nh, _field)
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static const struct snl_attr_parser _nla_p_mp_nh_metrics[] = {
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{ .type = NL_RTAX_MTU, .off = _OUT(rtax_mtu), .cb = snl_attr_get_uint32 },
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};
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SNL_DECLARE_ATTR_PARSER(_metrics_mp_nh_parser, _nla_p_mp_nh_metrics);
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static const struct snl_attr_parser _nla_p_mp_nh[] = {
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{ .type = NL_RTA_GATEWAY, .off = _OUT(gw), .cb = snl_attr_get_ip },
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{ .type = NL_RTA_METRICS, .arg = &_metrics_mp_nh_parser, .cb = snl_attr_get_nested },
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{ .type = NL_RTA_RTFLAGS, .off = _OUT(rta_rtflags), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_VIA, .off = _OUT(gw), .cb = snl_attr_get_ipvia },
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};
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static const struct snl_field_parser _fp_p_mp_nh[] = {
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{ .off_in = _IN(rtnh_flags), .off_out = _OUT(rtnh_flags), .cb = snl_field_get_uint8 },
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{ .off_in = _IN(rtnh_hops), .off_out = _OUT(rtnh_weight), .cb = snl_field_get_uint8 },
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{ .off_in = _IN(rtnh_ifindex), .off_out = _OUT(ifindex), .cb = snl_field_get_uint32 },
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};
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static inline bool
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_cb_p_mp_nh(struct snl_state *ss __unused, void *_target)
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{
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struct rta_mpath_nh *target = _target;
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finalize_sockaddr(target->gw, target->ifindex);
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return (true);
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}
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#undef _IN
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#undef _OUT
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SNL_DECLARE_PARSER_EXT(_mpath_nh_parser, struct rtnexthop, _fp_p_mp_nh, _nla_p_mp_nh, _cb_p_mp_nh);
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struct rta_mpath {
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int num_nhops;
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struct rta_mpath_nh nhops[0];
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};
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static bool
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nlattr_get_multipath(struct snl_state *ss, struct nlattr *nla, const void *arg __unused,
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void *target)
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{
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int data_len = nla->nla_len - sizeof(struct nlattr);
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struct rtnexthop *rtnh;
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int max_nhops = data_len / sizeof(struct rtnexthop);
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size_t sz = (max_nhops + 2) * sizeof(struct rta_mpath_nh);
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struct rta_mpath *mp = snl_allocz(ss, sz);
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if (mp == NULL)
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return (false);
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mp->num_nhops = 0;
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for (rtnh = (struct rtnexthop *)(void *)(nla + 1); data_len > 0; ) {
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struct rta_mpath_nh *mpnh = &mp->nhops[mp->num_nhops++];
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if (!snl_parse_header(ss, rtnh, rtnh->rtnh_len, &_mpath_nh_parser, mpnh))
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return (false);
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int len = NL_ITEM_ALIGN(rtnh->rtnh_len);
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data_len -= len;
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rtnh = (struct rtnexthop *)(void *)((char *)rtnh + len);
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}
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if (data_len != 0 || mp->num_nhops == 0) {
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return (false);
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}
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*((struct rta_mpath **)target) = mp;
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return (true);
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}
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struct snl_parsed_route {
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struct sockaddr *rta_dst;
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struct sockaddr *rta_gw;
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struct nlattr *rta_metrics;
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struct rta_mpath *rta_multipath;
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uint32_t rta_expires;
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uint32_t rta_oif;
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uint32_t rta_expire;
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uint32_t rta_table;
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uint32_t rta_knh_id;
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uint32_t rta_nh_id;
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uint32_t rta_rtflags;
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uint32_t rtax_mtu;
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uint32_t rtax_weight;
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uint8_t rtm_family;
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uint8_t rtm_type;
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uint8_t rtm_protocol;
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uint8_t rtm_dst_len;
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};
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#define _IN(_field) offsetof(struct rtmsg, _field)
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#define _OUT(_field) offsetof(struct snl_parsed_route, _field)
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static const struct snl_attr_parser _nla_p_rtmetrics[] = {
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{ .type = NL_RTAX_MTU, .off = _OUT(rtax_mtu), .cb = snl_attr_get_uint32 },
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};
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SNL_DECLARE_ATTR_PARSER(_metrics_parser, _nla_p_rtmetrics);
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static const struct snl_attr_parser _nla_p_route[] = {
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{ .type = NL_RTA_DST, .off = _OUT(rta_dst), .cb = snl_attr_get_ip },
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{ .type = NL_RTA_OIF, .off = _OUT(rta_oif), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_GATEWAY, .off = _OUT(rta_gw), .cb = snl_attr_get_ip },
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{ .type = NL_RTA_METRICS, .arg = &_metrics_parser, .cb = snl_attr_get_nested },
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{ .type = NL_RTA_MULTIPATH, .off = _OUT(rta_multipath), .cb = nlattr_get_multipath },
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{ .type = NL_RTA_KNH_ID, .off = _OUT(rta_knh_id), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_WEIGHT, .off = _OUT(rtax_weight), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_RTFLAGS, .off = _OUT(rta_rtflags), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_TABLE, .off = _OUT(rta_table), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_VIA, .off = _OUT(rta_gw), .cb = snl_attr_get_ipvia },
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{ .type = NL_RTA_EXPIRES, .off = _OUT(rta_expire), .cb = snl_attr_get_uint32 },
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{ .type = NL_RTA_NH_ID, .off = _OUT(rta_nh_id), .cb = snl_attr_get_uint32 },
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};
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static const struct snl_field_parser _fp_p_route[] = {
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{.off_in = _IN(rtm_family), .off_out = _OUT(rtm_family), .cb = snl_field_get_uint8 },
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{.off_in = _IN(rtm_type), .off_out = _OUT(rtm_type), .cb = snl_field_get_uint8 },
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{.off_in = _IN(rtm_protocol), .off_out = _OUT(rtm_protocol), .cb = snl_field_get_uint8 },
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{.off_in = _IN(rtm_dst_len), .off_out = _OUT(rtm_dst_len), .cb = snl_field_get_uint8 },
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};
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static inline bool
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_cb_p_route(struct snl_state *ss __unused, void *_target)
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{
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struct snl_parsed_route *target = _target;
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finalize_sockaddr(target->rta_dst, target->rta_oif);
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finalize_sockaddr(target->rta_gw, target->rta_oif);
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return (true);
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}
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#undef _IN
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#undef _OUT
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SNL_DECLARE_PARSER_EXT(snl_rtm_route_parser, struct rtmsg, _fp_p_route, _nla_p_route, _cb_p_route);
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/* RTM_<NEW|DEL|GET>LINK message parser */
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struct snl_parsed_link {
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uint32_t ifi_index;
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uint32_t ifi_flags;
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uint32_t ifi_change;
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uint16_t ifi_type;
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uint8_t ifla_operstate;
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uint8_t ifla_carrier;
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uint32_t ifla_mtu;
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char *ifla_ifname;
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struct nlattr *ifla_address;
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struct nlattr *ifla_broadcast;
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char *ifla_ifalias;
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uint32_t ifla_promiscuity;
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struct rtnl_link_stats64 *ifla_stats64;
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};
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#define _IN(_field) offsetof(struct ifinfomsg, _field)
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#define _OUT(_field) offsetof(struct snl_parsed_link, _field)
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static const struct snl_attr_parser _nla_p_link[] = {
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{ .type = IFLA_ADDRESS, .off = _OUT(ifla_address), .cb = snl_attr_dup_nla },
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{ .type = IFLA_BROADCAST, .off = _OUT(ifla_broadcast), .cb = snl_attr_dup_nla },
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{ .type = IFLA_IFNAME, .off = _OUT(ifla_ifname), .cb = snl_attr_dup_string },
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{ .type = IFLA_MTU, .off = _OUT(ifla_mtu), .cb = snl_attr_get_uint32 },
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{ .type = IFLA_OPERSTATE, .off = _OUT(ifla_operstate), .cb = snl_attr_get_uint8 },
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{ .type = IFLA_IFALIAS, .off = _OUT(ifla_ifalias), .cb = snl_attr_dup_string },
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{ .type = IFLA_STATS64, .off = _OUT(ifla_stats64), .cb = snl_attr_dup_struct },
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{ .type = IFLA_PROMISCUITY, .off = _OUT(ifla_promiscuity), .cb = snl_attr_get_uint32 },
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{ .type = IFLA_CARRIER, .off = _OUT(ifla_carrier), .cb = snl_attr_get_uint8 },
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};
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static const struct snl_field_parser _fp_p_link[] = {
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{.off_in = _IN(ifi_index), .off_out = _OUT(ifi_index), .cb = snl_field_get_uint32 },
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{.off_in = _IN(ifi_flags), .off_out = _OUT(ifi_flags), .cb = snl_field_get_uint32 },
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{.off_in = _IN(ifi_change), .off_out = _OUT(ifi_change), .cb = snl_field_get_uint32 },
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{.off_in = _IN(ifi_type), .off_out = _OUT(ifi_type), .cb = snl_field_get_uint16 },
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};
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#undef _IN
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#undef _OUT
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SNL_DECLARE_PARSER(snl_rtm_link_parser, struct ifinfomsg, _fp_p_link, _nla_p_link);
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struct snl_parsed_link_simple {
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uint32_t ifi_index;
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uint32_t ifla_mtu;
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uint16_t ifi_type;
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uint32_t ifi_flags;
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char *ifla_ifname;
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};
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#define _IN(_field) offsetof(struct ifinfomsg, _field)
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#define _OUT(_field) offsetof(struct snl_parsed_link_simple, _field)
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static struct snl_attr_parser _nla_p_link_s[] = {
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{ .type = IFLA_IFNAME, .off = _OUT(ifla_ifname), .cb = snl_attr_dup_string },
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{ .type = IFLA_MTU, .off = _OUT(ifla_mtu), .cb = snl_attr_get_uint32 },
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};
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static struct snl_field_parser _fp_p_link_s[] = {
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{.off_in = _IN(ifi_index), .off_out = _OUT(ifi_index), .cb = snl_field_get_uint32 },
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{.off_in = _IN(ifi_type), .off_out = _OUT(ifi_type), .cb = snl_field_get_uint16 },
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{.off_in = _IN(ifi_flags), .off_out = _OUT(ifi_flags), .cb = snl_field_get_uint32 },
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};
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#undef _IN
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#undef _OUT
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SNL_DECLARE_PARSER(snl_rtm_link_parser_simple, struct ifinfomsg, _fp_p_link_s, _nla_p_link_s);
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struct snl_parsed_neigh {
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uint8_t ndm_family;
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uint8_t ndm_flags;
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uint16_t ndm_state;
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uint32_t nda_ifindex;
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2023-04-25 11:14:12 +00:00
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uint32_t nda_probes;
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uint32_t ndaf_next_ts;
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struct sockaddr *nda_dst;
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struct nlattr *nda_lladdr;
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};
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#define _IN(_field) offsetof(struct ndmsg, _field)
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#define _OUT(_field) offsetof(struct snl_parsed_neigh, _field)
|
2023-04-25 11:14:12 +00:00
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static const struct snl_attr_parser _nla_p_neigh_fbsd[] = {
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{ .type = NDAF_NEXT_STATE_TS, .off = _OUT(ndaf_next_ts), .cb = snl_attr_get_uint32 },
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};
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SNL_DECLARE_ATTR_PARSER(_neigh_fbsd_parser, _nla_p_neigh_fbsd);
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2023-03-26 09:04:41 +00:00
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static struct snl_attr_parser _nla_p_neigh_s[] = {
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{ .type = NDA_DST, .off = _OUT(nda_dst), .cb = snl_attr_get_ip },
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2023-05-09 14:45:57 +00:00
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{ .type = NDA_LLADDR , .off = _OUT(nda_lladdr), .cb = snl_attr_dup_nla },
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2023-04-25 11:14:12 +00:00
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{ .type = NDA_PROBES, .off = _OUT(nda_probes), .cb = snl_attr_get_uint32 },
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2023-03-26 09:04:41 +00:00
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{ .type = NDA_IFINDEX, .off = _OUT(nda_ifindex), .cb = snl_attr_get_uint32 },
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2023-04-25 11:14:12 +00:00
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{ .type = NDA_FREEBSD, .arg = &_neigh_fbsd_parser, .cb = snl_attr_get_nested },
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2023-03-26 09:04:41 +00:00
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};
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static struct snl_field_parser _fp_p_neigh_s[] = {
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{.off_in = _IN(ndm_family), .off_out = _OUT(ndm_family), .cb = snl_field_get_uint8 },
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{.off_in = _IN(ndm_flags), .off_out = _OUT(ndm_flags), .cb = snl_field_get_uint8 },
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{.off_in = _IN(ndm_state), .off_out = _OUT(ndm_state), .cb = snl_field_get_uint16 },
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2023-04-25 11:14:12 +00:00
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{.off_in = _IN(ndm_ifindex), .off_out = _OUT(nda_ifindex), .cb = snl_field_get_uint32 },
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2023-03-26 09:04:41 +00:00
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};
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2023-05-09 14:55:47 +00:00
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static inline bool
|
2023-05-09 15:26:16 +00:00
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_cb_p_neigh(struct snl_state *ss __unused, void *_target)
|
2023-05-09 14:55:47 +00:00
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{
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struct snl_parsed_neigh *target = _target;
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finalize_sockaddr(target->nda_dst, target->nda_ifindex);
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return (true);
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}
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2023-03-26 09:04:41 +00:00
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#undef _IN
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|
#undef _OUT
|
2023-05-09 14:55:47 +00:00
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|
SNL_DECLARE_PARSER_EXT(snl_rtm_neigh_parser, struct ndmsg, _fp_p_neigh_s, _nla_p_neigh_s, _cb_p_neigh);
|
2023-03-26 09:04:41 +00:00
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struct snl_parsed_addr {
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uint8_t ifa_family;
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uint8_t ifa_prefixlen;
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uint32_t ifa_index;
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struct sockaddr *ifa_local;
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struct sockaddr *ifa_address;
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struct sockaddr *ifa_broadcast;
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char *ifa_label;
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};
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#define _IN(_field) offsetof(struct ifaddrmsg, _field)
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#define _OUT(_field) offsetof(struct snl_parsed_addr, _field)
|
2023-05-09 14:55:47 +00:00
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static const struct snl_attr_parser _nla_p_addr_s[] = {
|
2023-03-26 09:04:41 +00:00
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{ .type = IFA_ADDRESS, .off = _OUT(ifa_address), .cb = snl_attr_get_ip },
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{ .type = IFA_LOCAL, .off = _OUT(ifa_local), .cb = snl_attr_get_ip },
|
2023-05-09 14:45:57 +00:00
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{ .type = IFA_LABEL, .off = _OUT(ifa_label), .cb = snl_attr_dup_string },
|
2023-03-26 09:04:41 +00:00
|
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|
{ .type = IFA_BROADCAST, .off = _OUT(ifa_broadcast), .cb = snl_attr_get_ip },
|
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|
|
};
|
2023-05-09 14:55:47 +00:00
|
|
|
static const struct snl_field_parser _fp_p_addr_s[] = {
|
2023-03-26 09:04:41 +00:00
|
|
|
{.off_in = _IN(ifa_family), .off_out = _OUT(ifa_family), .cb = snl_field_get_uint8 },
|
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|
|
{.off_in = _IN(ifa_prefixlen), .off_out = _OUT(ifa_prefixlen), .cb = snl_field_get_uint8 },
|
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|
|
{.off_in = _IN(ifa_index), .off_out = _OUT(ifa_index), .cb = snl_field_get_uint32 },
|
|
|
|
};
|
2023-05-09 14:55:47 +00:00
|
|
|
|
|
|
|
static inline bool
|
2023-05-09 15:26:16 +00:00
|
|
|
_cb_p_addr(struct snl_state *ss __unused, void *_target)
|
2023-05-09 14:55:47 +00:00
|
|
|
{
|
|
|
|
struct snl_parsed_addr *target = _target;
|
|
|
|
|
|
|
|
finalize_sockaddr(target->ifa_address, target->ifa_index);
|
|
|
|
finalize_sockaddr(target->ifa_local, target->ifa_index);
|
|
|
|
return (true);
|
|
|
|
}
|
2023-03-26 09:04:41 +00:00
|
|
|
#undef _IN
|
|
|
|
#undef _OUT
|
2023-05-09 14:55:47 +00:00
|
|
|
SNL_DECLARE_PARSER_EXT(snl_rtm_addr_parser, struct ifaddrmsg, _fp_p_addr_s, _nla_p_addr_s, _cb_p_addr);
|
2023-04-25 11:14:12 +00:00
|
|
|
|
|
|
|
struct snl_parsed_nhop {
|
|
|
|
uint32_t nha_id;
|
|
|
|
uint8_t nha_blackhole;
|
|
|
|
uint8_t nha_groups;
|
|
|
|
uint8_t nhaf_knhops;
|
|
|
|
uint8_t nhaf_family;
|
|
|
|
uint32_t nha_oif;
|
|
|
|
struct sockaddr *nha_gw;
|
|
|
|
uint8_t nh_family;
|
|
|
|
uint8_t nh_protocol;
|
|
|
|
uint32_t nhaf_table;
|
|
|
|
uint32_t nhaf_kid;
|
|
|
|
uint32_t nhaf_aif;
|
|
|
|
};
|
|
|
|
|
|
|
|
#define _IN(_field) offsetof(struct nhmsg, _field)
|
|
|
|
#define _OUT(_field) offsetof(struct snl_parsed_nhop, _field)
|
|
|
|
static struct snl_attr_parser _nla_p_nh_fbsd[] = {
|
|
|
|
{ .type = NHAF_KNHOPS, .off = _OUT(nhaf_knhops), .cb = snl_attr_get_flag },
|
|
|
|
{ .type = NHAF_TABLE, .off = _OUT(nhaf_table), .cb = snl_attr_get_uint32 },
|
|
|
|
{ .type = NHAF_KID, .off = _OUT(nhaf_kid), .cb = snl_attr_get_uint32 },
|
|
|
|
{ .type = NHAF_AIF, .off = _OUT(nhaf_aif), .cb = snl_attr_get_uint32 },
|
|
|
|
};
|
|
|
|
SNL_DECLARE_ATTR_PARSER(_nh_fbsd_parser, _nla_p_nh_fbsd);
|
|
|
|
|
|
|
|
static const struct snl_field_parser _fp_p_nh[] = {
|
|
|
|
{ .off_in = _IN(nh_family), .off_out = _OUT(nh_family), .cb = snl_field_get_uint8 },
|
|
|
|
{ .off_in = _IN(nh_protocol), .off_out = _OUT(nh_protocol), .cb = snl_field_get_uint8 },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct snl_attr_parser _nla_p_nh[] = {
|
|
|
|
{ .type = NHA_ID, .off = _OUT(nha_id), .cb = snl_attr_get_uint32 },
|
|
|
|
{ .type = NHA_BLACKHOLE, .off = _OUT(nha_blackhole), .cb = snl_attr_get_flag },
|
|
|
|
{ .type = NHA_OIF, .off = _OUT(nha_oif), .cb = snl_attr_get_uint32 },
|
|
|
|
{ .type = NHA_GATEWAY, .off = _OUT(nha_gw), .cb = snl_attr_get_ip },
|
|
|
|
{ .type = NHA_FREEBSD, .arg = &_nh_fbsd_parser, .cb = snl_attr_get_nested },
|
|
|
|
};
|
2023-05-09 14:55:47 +00:00
|
|
|
|
|
|
|
static inline bool
|
2023-05-09 15:26:16 +00:00
|
|
|
_cb_p_nh(struct snl_state *ss __unused, void *_target)
|
2023-05-09 14:55:47 +00:00
|
|
|
{
|
|
|
|
struct snl_parsed_nhop *target = _target;
|
|
|
|
|
|
|
|
finalize_sockaddr(target->nha_gw, target->nha_oif);
|
|
|
|
return (true);
|
|
|
|
}
|
2023-04-25 11:14:12 +00:00
|
|
|
#undef _IN
|
|
|
|
#undef _OUT
|
2023-05-09 14:55:47 +00:00
|
|
|
SNL_DECLARE_PARSER_EXT(snl_nhmsg_parser, struct nhmsg, _fp_p_nh, _nla_p_nh, _cb_p_nh);
|
2023-04-25 11:14:12 +00:00
|
|
|
|
2023-03-09 14:43:56 +00:00
|
|
|
static const struct snl_hdr_parser *snl_all_route_parsers[] = {
|
|
|
|
&_metrics_mp_nh_parser, &_mpath_nh_parser, &_metrics_parser, &snl_rtm_route_parser,
|
2023-04-25 11:14:12 +00:00
|
|
|
&snl_rtm_link_parser, &snl_rtm_link_parser_simple,
|
|
|
|
&_neigh_fbsd_parser, &snl_rtm_neigh_parser,
|
|
|
|
&snl_rtm_addr_parser, &_nh_fbsd_parser, &snl_nhmsg_parser,
|
2023-03-09 14:43:56 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
#endif
|