sys/net/rtsock.c

211 			struct rt_msghdr *rtm, struct rib_cmd_info *rc);
215 static void	send_rtm_reply(struct socket *so, struct rt_msghdr *rtm,
644  * Fills in @info based on userland-provided @rtm message.
649 fill_addrinfo(struct rt_msghdr *rtm, int len, struct linear_buffer *lb, u_int fibnum,
654 	rtm->rtm_pid = curproc->p_pid;
655 	info->rti_addrs = rtm->rtm_addrs;
657 	info->rti_mflags = rtm->rtm_inits;
658 	info->rti_rmx = &rtm->rtm_rmx;
665 	if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, info))
668 	info->rti_flags = rtm->rtm_flags;
676 	if (rtm->rtm_type != RTM_GET) {
743     struct rt_msghdr *rtm, struct rib_cmd_info *rc)
765 	if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
795 	if (rtm->rtm_flags & RTF_ANNOUNCE) {
898 	struct rt_msghdr *rtm, *orig_rtm = NULL;
902 	rtm = *prtm;
904 	rtsock_msg_buffer(rtm->rtm_type, info, NULL, &len);
911 		bcopy(rtm, tmp_rtm, rtm->rtm_msglen);
912 		orig_rtm = rtm;
913 		rtm = tmp_rtm;
917 		 * Delay freeing original rtm as info contains
922 	w.w_tmem = (caddr_t)rtm;
924 	rtsock_msg_buffer(rtm->rtm_type, info, &w, &len);
925 	rtm->rtm_addrs = info->rti_addrs;
929 	*prtm = rtm;
936  * rtm can be reallocated.
939  *  rtm.
947 	struct rt_msghdr *rtm;
951 	rtm = *prtm;
962 	if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
973 			rtm->rtm_index = ifp->if_index;
979 		rtm->rtm_index = ifp->if_index;
984 	rtm = *prtm;
985 	rtm->rtm_flags = rc->rc_rt->rte_flags | nhop_get_rtflags(nh);
986 	if (rtm->rtm_flags & RTF_GWFLAG_COMPAT)
987 		rtm->rtm_flags = RTF_GATEWAY |
988 			(rtm->rtm_flags & ~RTF_GWFLAG_COMPAT);
989 	rt_getmetrics(rc->rc_rt, nh, &rtm->rtm_rmx);
990 	rtm->rtm_rmx.rmx_weight = rc->rc_nh_weight;
1032 	struct rt_msghdr *rtm = NULL;
1061 	if (len < sizeof(*rtm) ||
1072 	if ((rtm = malloc(total_len, M_TEMP, M_NOWAIT)) == NULL)
1075 	m_copydata(m, 0, len, (caddr_t)rtm);
1079 		.base = (char *)rtm + alloc_len,
1083 	if (rtm->rtm_version != RTM_VERSION) {
1085 		free(rtm, M_TEMP);
1086 		rtm = NULL;
1096 	if ((error = fill_addrinfo(rtm, len, &lb, fibnum, &info)) != 0) {
1107 	if (rtm->rtm_flags & RTF_LLDATA) {
1108 		error = lla_rt_output(rtm, &info);
1113 	int blackhole_flags = rtm->rtm_flags & (RTF_BLACKHOLE|RTF_REJECT);
1125 	switch (rtm->rtm_type) {
1128 		if (rtm->rtm_type == RTM_ADD) {
1134 		error = rib_action(fibnum, rtm->rtm_type, &info, &rc);
1149 				rtm->rtm_index = nh->nh_ifp->if_index;
1150 				rtm->rtm_flags = rc.rc_rt->rte_flags | nhop_get_rtflags(nh);
1173 		error = handle_rtm_get(&info, fibnum, rtm, &rc);
1187 		error = update_rtm_from_rc(&info, &rtm, alloc_len, &rc, nh);
1190 		 * point to memory outsize @rtm. Some may be pointing
1197 		 * writing updated rtm in rtsock_msg_buffer().
1209 	if (rtm != NULL) {
1211 			/* sin6_scope_id is recovered before sending rtm. */
1223 			if (update_rtm_from_info(&info, &rtm, alloc_len) != 0) {
1230 	send_rtm_reply(so, rtm, m, saf, fibnum, error);
1236  * Sends the prepared reply message in @rtm to all rtsock clients.
1237  * Frees @m and @rtm.
1241 send_rtm_reply(struct socket *so, struct rt_msghdr *rtm, struct mbuf *m,
1251 			if (rtm != NULL)
1252 				free(rtm, M_TEMP);
1260 	if (rtm != NULL) {
1262 			rtm->rtm_errno = rtm_errno;
1264 			rtm->rtm_flags |= RTF_DONE;
1266 		m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
1267 		if (m->m_pkthdr.len < rtm->rtm_msglen) {
1270 		} else if (m->m_pkthdr.len > rtm->rtm_msglen)
1271 			m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
1273 		free(rtm, M_TEMP);
1680 	struct rt_msghdr *rtm;
1723 	rtm = mtod(m, struct rt_msghdr *);
1724 	bzero((caddr_t)rtm, len);
1749 	rtm->rtm_msglen = len;
1750 	rtm->rtm_version = RTM_VERSION;
1751 	rtm->rtm_type = type;
1770 	struct rt_msghdr *rtm = NULL;
1819 		rtm = (struct rt_msghdr *)w->w_tmem;
1877 		rtm->rtm_version = RTM_VERSION;
1878 		rtm->rtm_type = type;
1879 		rtm->rtm_msglen = len;
1900 	struct rt_msghdr *rtm;
1917 	rtm = mtod(m, struct rt_msghdr *);
1918 	rtm->rtm_flags = RTF_DONE | flags;
1919 	rtm->rtm_errno = error;
1920 	rtm->rtm_addrs = rtinfo->rti_addrs;
2037 	struct rt_msghdr *rtm;
2058 	rtm = mtod(m, struct rt_msghdr *);
2059 	rtm->rtm_addrs = info->rti_addrs;
2061 		rtm->rtm_index = info->rti_ifp->if_index;
2067 	rtm->rtm_flags = info->rti_flags;
2267 		struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
2269 		bzero(&rtm->rtm_index,
2270 		    sizeof(*rtm) - offsetof(struct rt_msghdr, rtm_index));
2277 		rtm->rtm_flags = rtflags | RTF_UP;
2278 		if (rtm->rtm_flags & RTF_GWFLAG_COMPAT)
2279 			rtm->rtm_flags = RTF_GATEWAY |
2280 				(rtm->rtm_flags & ~RTF_GWFLAG_COMPAT);
2281 		rt_getmetrics(rt, nh, &rtm->rtm_rmx);
2282 		rtm->rtm_rmx.rmx_weight = weight;
2283 		rtm->rtm_index = nh->nh_ifp->if_index;
2284 		rtm->rtm_addrs = info.rti_addrs;
2285 		error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);