1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
6  * Redistribution and use in source and binary forms, with or without
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
81 	if (hdr->nlmsg_len < sizeof(struct nlmsghdr) + sizeof(struct ndmsg))  in rtnl_neigh_from_linux()
83 	if ((f = linux_to_bsd_domain(ndm->ndm_family)) == AF_UNKNOWN)  in rtnl_neigh_from_linux()
86 	ndm->ndm_family = f;  in rtnl_neigh_from_linux()
97 	if (hdr->nlmsg_len < sizeof(struct nlmsghdr) +  in rtnl_ifaddr_from_linux()
98 	    offsetof(struct ifaddrmsg, ifa_family) + sizeof(ifam->ifa_family))  in rtnl_ifaddr_from_linux()
100 	if ((f = linux_to_bsd_domain(ifam->ifa_family)) == AF_UNKNOWN)  in rtnl_ifaddr_from_linux()
103 	ifam->ifa_family = f;  in rtnl_ifaddr_from_linux()
115 	struct rtmsg *rtm = (struct rtmsg *)(hdr + 1);  in rtnl_route_from_linux()  local
120 	if (hdr->nlmsg_len < sizeof(struct nlmsghdr) + sizeof(struct rtmsg))  in rtnl_route_from_linux()
122 	if ((f = linux_to_bsd_domain(rtm->rtm_family)) == AF_UNKNOWN)  in rtnl_route_from_linux()
124 	rtm->rtm_family = f;  in rtnl_route_from_linux()
126 	if (rtm->rtm_table == 254)  in rtnl_route_from_linux()
127 		rtm->rtm_table = 0;  in rtnl_route_from_linux()
129 	attrs_len = hdr->nlmsg_len - sizeof(struct nlmsghdr);  in rtnl_route_from_linux()
130 	attrs_len -= NETLINK_ALIGN(sizeof(struct rtmsg));  in rtnl_route_from_linux()
131 	nla_head = (struct nlattr *)((char *)rtm + NETLINK_ALIGN(sizeof(struct rtmsg)));  in rtnl_route_from_linux()
135 		    nla->nla_type, nla->nla_len, attrs_len);  in rtnl_route_from_linux()
137 		if (rta->rta_len < sizeof(struct rtattr)) {  in rtnl_route_from_linux()
140 		switch (rta->rta_type) {  in rtnl_route_from_linux()
144 			rtm->rtm_table = 0;  in rtnl_route_from_linux()
161 	switch (hdr->nlmsg_type) {  in rtnl_from_linux()
177 		    hdr->nlmsg_type);  in rtnl_from_linux()
198  * Kernel -> Linux
205 	out_hdr = nlmsg_reserve_data(nw, NLMSG_ALIGN(hdr->nlmsg_len), char);  in handle_default_out()
208 		memcpy(out_hdr, hdr, hdr->nlmsg_len);  in handle_default_out()
209 		nw->num_messages++;  in handle_default_out()
218 	return (nlmsg_add(nw, hdr->nlmsg_pid, hdr->nlmsg_seq, hdr->nlmsg_type,  in nlmsg_copy_header()
219 	    hdr->nlmsg_flags, 0));  in nlmsg_copy_header()
236 	struct nlattr *nla = nlmsg_reserve_data(nw, nla_orig->nla_len, struct nlattr);  in nlmsg_copy_nla()
238 		memcpy(nla, nla_orig, nla_orig->nla_len);  in nlmsg_copy_nla()
258 #define	LINUX_NLA_UNHANDLED	-1
269 	switch (hdr->nlmsg_type) {  in nlmsg_translate_all_nla()
273 		switch (nla->nla_type) {  in nlmsg_translate_all_nla()
292 	int attrs_len = hdr->nlmsg_len - sizeof(struct nlmsghdr) - hdrlen;  in nlmsg_copy_all_nla()
296 		RT_LOG(LOG_DEBUG3, "reading attr %d len %d", nla->nla_type, nla->nla_len);  in nlmsg_copy_all_nla()
297 		if (nla->nla_len < sizeof(struct nlattr)) {  in nlmsg_copy_all_nla()
363 	ifinfo->ifi_family = bsd_to_linux_domain(ifinfo->ifi_family);  in rtnl_newlink_to_linux()
365 	switch (ifinfo->ifi_type) {  in rtnl_newlink_to_linux()
367 		ifinfo->ifi_type = LINUX_ARPHRD_ETHER;  in rtnl_newlink_to_linux()
370 	ifinfo->ifi_flags = rtnl_if_flags_to_linux(ifinfo->ifi_flags);  in rtnl_newlink_to_linux()
398 	ifamsg->ifa_family = bsd_to_linux_domain(ifamsg->ifa_family);  in rtnl_newaddr_to_linux()
420 	ndm->ndm_family = bsd_to_linux_domain(ndm->ndm_family);  in rtnl_newneigh_to_linux()
438 	struct rtmsg *rtm;  in rtnl_newroute_to_linux()  local
439 	rtm = nlmsg_copy_next_header(hdr, nw, struct rtmsg);  in rtnl_newroute_to_linux()
440 	rtm->rtm_family = bsd_to_linux_domain(rtm->rtm_family);  in rtnl_newroute_to_linux()
445 	int attrs_len = hdr->nlmsg_len - sizeof(struct nlmsghdr) - hdrlen;  in rtnl_newroute_to_linux()
450 		//RT_LOG(LOG_DEBUG, "READING attr %d len %d", nla->nla_type, nla->nla_len);  in rtnl_newroute_to_linux()
451 		if (rta->rta_len < sizeof(struct rtattr)) {  in rtnl_newroute_to_linux()
455 		switch (rta->rta_type) {  in rtnl_newroute_to_linux()
482 	RT_LOG(LOG_DEBUG2, "Got message type %d", hdr->nlmsg_type);  in rtnl_to_linux()
484 	switch (hdr->nlmsg_type) {  in rtnl_to_linux()
501 		    hdr->nlmsg_type);  in rtnl_to_linux()
514 	nlerr->error = bsd_to_linux_errno(nlerr->error);  in nlmsg_error_to_linux()
517 	if (hdr->nlmsg_len == copied_len) {  in nlmsg_error_to_linux()
527 	    nlerr->msg.nlmsg_type);  in nlmsg_error_to_linux()
529 	int copy_len = hdr->nlmsg_len - copied_len;  in nlmsg_error_to_linux()
543 	if (hdr->nlmsg_type < NLMSG_MIN_TYPE) {  in nlmsg_to_linux()
544 		switch (hdr->nlmsg_type) {  in nlmsg_to_linux()
553 			    hdr->nlmsg_type);  in nlmsg_to_linux()
558 	switch (nlp->nl_proto) {  in nlmsg_to_linux()
573 	    orig->datalen + SCRATCH_BUFFER_SIZE, nlp, false)))  in nlmsgs_to_linux()
578 	    offset + sizeof(struct nlmsghdr) <= orig->datalen;  in nlmsgs_to_linux()
580 		struct nlmsghdr *hdr = (struct nlmsghdr *)&orig->data[offset];  in nlmsgs_to_linux()
582 		msglen = NLMSG_ALIGN(hdr->nlmsg_len);  in nlmsgs_to_linux()
585 			    hdr->nlmsg_type);  in nlmsgs_to_linux()
592 	    nw.buf->datalen, nw.num_messages);  in nlmsgs_to_linux()