210 static inline struct rtattr *rtattr_hdr(struct nlmsghdr *nh)  in rtattr_hdr()  argument
212 	return (struct rtattr *)((char *)(nh) + RTA_ALIGN((nh)->nlmsg_len));  in rtattr_hdr()
215 static int rtattr_pack(struct nlmsghdr *nh, size_t req_sz,  in rtattr_pack()  argument
219 	struct rtattr *attr = rtattr_hdr(nh);  in rtattr_pack()
220 	size_t nl_size = RTA_ALIGN(nh->nlmsg_len) + RTA_LENGTH(size);  in rtattr_pack()
226 	nh->nlmsg_len = nl_size;  in rtattr_pack()
235 static struct rtattr *_rtattr_begin(struct nlmsghdr *nh, size_t req_sz,  in _rtattr_begin()  argument
238 	struct rtattr *ret = rtattr_hdr(nh);  in _rtattr_begin()
240 	if (rtattr_pack(nh, req_sz, rta_type, payload, size))  in _rtattr_begin()
246 static inline struct rtattr *rtattr_begin(struct nlmsghdr *nh, size_t req_sz,  in rtattr_begin()  argument
249 	return _rtattr_begin(nh, req_sz, rta_type, 0, 0);  in rtattr_begin()
252 static inline void rtattr_end(struct nlmsghdr *nh, struct rtattr *attr)  in rtattr_end()  argument
254 	char *nlmsg_end = (char *)nh + nh->nlmsg_len;  in rtattr_end()
259 static int veth_pack_peerb(struct nlmsghdr *nh, size_t req_sz,  in veth_pack_peerb()  argument
269 	peer_attr = _rtattr_begin(nh, req_sz, VETH_INFO_PEER, &pi, sizeof(pi));  in veth_pack_peerb()
273 	if (rtattr_pack(nh, req_sz, IFLA_IFNAME, peer, strlen(peer)))  in veth_pack_peerb()
276 	if (rtattr_pack(nh, req_sz, IFLA_NET_NS_FD, &ns, sizeof(ns)))  in veth_pack_peerb()
279 	rtattr_end(nh, peer_attr);  in veth_pack_peerb()
312 		struct nlmsghdr		nh;  in veth_add()  member
320 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.info));  in veth_add()
321 	req.nh.nlmsg_type	= RTM_NEWLINK;  in veth_add()
322 	req.nh.nlmsg_flags	= flags;  in veth_add()
323 	req.nh.nlmsg_seq	= seq;  in veth_add()
327 	if (rtattr_pack(&req.nh, sizeof(req), IFLA_IFNAME, peera, strlen(peera)))  in veth_add()
330 	if (rtattr_pack(&req.nh, sizeof(req), IFLA_NET_NS_FD, &ns_a, sizeof(ns_a)))  in veth_add()
333 	link_info = rtattr_begin(&req.nh, sizeof(req), IFLA_LINKINFO);  in veth_add()
337 	if (rtattr_pack(&req.nh, sizeof(req), IFLA_INFO_KIND, veth_type, sizeof(veth_type)))  in veth_add()
340 	info_data = rtattr_begin(&req.nh, sizeof(req), IFLA_INFO_DATA);  in veth_add()
344 	if (veth_pack_peerb(&req.nh, sizeof(req), peerb, ns_b))  in veth_add()
347 	rtattr_end(&req.nh, info_data);  in veth_add()
348 	rtattr_end(&req.nh, link_info);  in veth_add()
350 	if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) {  in veth_add()
362 		struct nlmsghdr		nh;  in ip4_addr_set()  member
368 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.info));  in ip4_addr_set()
369 	req.nh.nlmsg_type	= RTM_NEWADDR;  in ip4_addr_set()
370 	req.nh.nlmsg_flags	= flags;  in ip4_addr_set()
371 	req.nh.nlmsg_seq	= seq;  in ip4_addr_set()
386 	if (rtattr_pack(&req.nh, sizeof(req), IFA_LOCAL, &addr, sizeof(addr)))  in ip4_addr_set()
389 	if (rtattr_pack(&req.nh, sizeof(req), IFA_ADDRESS, &addr, sizeof(addr)))  in ip4_addr_set()
392 	if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) {  in ip4_addr_set()
402 		struct nlmsghdr		nh;  in link_set_up()  member
408 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.info));  in link_set_up()
409 	req.nh.nlmsg_type	= RTM_NEWLINK;  in link_set_up()
410 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in link_set_up()
411 	req.nh.nlmsg_seq	= seq;  in link_set_up()
418 	if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) {  in link_set_up()
429 		struct nlmsghdr	nh;  in ip4_route_set()  member
436 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.rt));  in ip4_route_set()
437 	req.nh.nlmsg_type	= RTM_NEWROUTE;  in ip4_route_set()
438 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK | NLM_F_CREATE;  in ip4_route_set()
439 	req.nh.nlmsg_seq	= seq;  in ip4_route_set()
447 	if (rtattr_pack(&req.nh, sizeof(req), RTA_DST, &dst, sizeof(dst)))  in ip4_route_set()
450 	if (rtattr_pack(&req.nh, sizeof(req), RTA_PREFSRC, &src, sizeof(src)))  in ip4_route_set()
453 	if (rtattr_pack(&req.nh, sizeof(req), RTA_OIF, &index, sizeof(index)))  in ip4_route_set()
456 	if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) {  in ip4_route_set()
826 static int xfrm_state_pack_algo(struct nlmsghdr *nh, size_t req_sz,  in xfrm_state_pack_algo()  argument
888 			if (rtattr_pack(nh, req_sz, type, &alg, sizeof(alg)))  in xfrm_state_pack_algo()
903 	if (rtattr_pack(nh, req_sz, type, &alg, sizeof(alg)))  in xfrm_state_pack_algo()
919 		struct nlmsghdr		nh;  in xfrm_state_add()  member
925 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.info));  in xfrm_state_add()
926 	req.nh.nlmsg_type	= XFRM_MSG_NEWSA;  in xfrm_state_add()
927 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_state_add()
928 	req.nh.nlmsg_seq	= seq;  in xfrm_state_add()
954 	if (xfrm_state_pack_algo(&req.nh, sizeof(req), desc))  in xfrm_state_add()
957 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_state_add()
1008 		struct nlmsghdr		nh;  in xfrm_state_check()  member
1012 		struct nlmsghdr		nh;  in xfrm_state_check()  member
1024 	req.nh.nlmsg_len	= NLMSG_LENGTH(0);  in xfrm_state_check()
1025 	req.nh.nlmsg_type	= XFRM_MSG_GETSA;  in xfrm_state_check()
1026 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_DUMP;  in xfrm_state_check()
1027 	req.nh.nlmsg_seq	= seq;  in xfrm_state_check()
1036 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_ADDRESS_FILTER,  in xfrm_state_check()
1040 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_state_check()
1050 		if (answer.nh.nlmsg_type == NLMSG_ERROR) {  in xfrm_state_check()
1054 		} else if (answer.nh.nlmsg_type == NLMSG_DONE) {  in xfrm_state_check()
1059 		} else if (answer.nh.nlmsg_type == XFRM_MSG_NEWSA) {  in xfrm_state_check()
1101 		struct nlmsghdr			nh;  in xfrm_policy_add()  member
1109 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.info));  in xfrm_policy_add()
1110 	req.nh.nlmsg_type	= XFRM_MSG_NEWPOLICY;  in xfrm_policy_add()
1111 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_policy_add()
1112 	req.nh.nlmsg_seq	= seq;  in xfrm_policy_add()
1141 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_TMPL, &tmpl, sizeof(tmpl)))  in xfrm_policy_add()
1144 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_policy_add()
1176 		struct nlmsghdr			nh;  in xfrm_policy_del()  member
1182 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.id));  in xfrm_policy_del()
1183 	req.nh.nlmsg_type	= XFRM_MSG_DELPOLICY;  in xfrm_policy_del()
1184 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_policy_del()
1185 	req.nh.nlmsg_seq	= seq;  in xfrm_policy_del()
1195 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_policy_del()
1226 		struct nlmsghdr		nh;  in xfrm_state_del()  member
1233 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.id));  in xfrm_state_del()
1234 	req.nh.nlmsg_type	= XFRM_MSG_DELSA;  in xfrm_state_del()
1235 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_state_del()
1236 	req.nh.nlmsg_seq	= seq;  in xfrm_state_del()
1245 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_SRCADDR, &saddr, sizeof(saddr)))  in xfrm_state_del()
1248 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_state_del()
1277 		struct nlmsghdr			nh;  in xfrm_state_allocspi()  member
1281 		struct nlmsghdr			nh;  in xfrm_state_allocspi()  member
1289 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.spi));  in xfrm_state_allocspi()
1290 	req.nh.nlmsg_type	= XFRM_MSG_ALLOCSPI;  in xfrm_state_allocspi()
1291 	req.nh.nlmsg_flags	= NLM_F_REQUEST;  in xfrm_state_allocspi()
1292 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_state_allocspi()
1299 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_state_allocspi()
1307 	} else if (answer.nh.nlmsg_type == XFRM_MSG_NEWSA) {  in xfrm_state_allocspi()
1316 	} else if (answer.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_state_allocspi()
1317 		printk("expected NLMSG_ERROR, got %d", (int)answer.nh.nlmsg_type);  in xfrm_state_allocspi()
1367 		struct nlmsghdr nh;  in xfrm_monitor_acquire()  member
1382 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.acq));  in xfrm_monitor_acquire()
1383 	req.nh.nlmsg_type	= XFRM_MSG_ACQUIRE;  in xfrm_monitor_acquire()
1384 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_monitor_acquire()
1385 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_monitor_acquire()
1394 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_TMPL, &xfrm_tmpl, sizeof(xfrm_tmpl)))  in xfrm_monitor_acquire()
1397 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_monitor_acquire()
1405 	} else if (req.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_monitor_acquire()
1406 		printk("expected NLMSG_ERROR, got %d", (int)req.nh.nlmsg_type);  in xfrm_monitor_acquire()
1438 		struct nlmsghdr nh;  in xfrm_expire_state()  member
1460 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.expire));  in xfrm_expire_state()
1461 	req.nh.nlmsg_type	= XFRM_MSG_EXPIRE;  in xfrm_expire_state()
1462 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_expire_state()
1463 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_expire_state()
1471 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_expire_state()
1479 	} else if (req.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_expire_state()
1480 		printk("expected NLMSG_ERROR, got %d", (int)req.nh.nlmsg_type);  in xfrm_expire_state()
1510 		struct nlmsghdr nh;  in xfrm_expire_policy()  member
1535 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.expire));  in xfrm_expire_policy()
1536 	req.nh.nlmsg_type	= XFRM_MSG_POLEXPIRE;  in xfrm_expire_policy()
1537 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_expire_policy()
1538 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_expire_policy()
1549 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_expire_policy()
1557 	} else if (req.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_expire_policy()
1558 		printk("expected NLMSG_ERROR, got %d", (int)req.nh.nlmsg_type);  in xfrm_expire_policy()
1591 		struct nlmsghdr		nh;  in xfrm_spdinfo_set_thresh()  member
1601 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.unused));  in xfrm_spdinfo_set_thresh()
1602 	req.nh.nlmsg_type	= XFRM_MSG_NEWSPDINFO;  in xfrm_spdinfo_set_thresh()
1603 	req.nh.nlmsg_flags	= NLM_F_REQUEST | NLM_F_ACK;  in xfrm_spdinfo_set_thresh()
1604 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_spdinfo_set_thresh()
1608 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_SPD_IPV4_HTHRESH, &thresh, sizeof(thresh)))  in xfrm_spdinfo_set_thresh()
1613 	if (rtattr_pack(&req.nh, sizeof(req), XFRMA_SPD_IPV6_HTHRESH, &thresh, sizeof(thresh)))  in xfrm_spdinfo_set_thresh()
1618 		if (rtattr_pack(&req.nh, sizeof(req), XFRMA_IF_ID, NULL, 0)) {  in xfrm_spdinfo_set_thresh()
1624 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_spdinfo_set_thresh()
1632 	} else if (req.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_spdinfo_set_thresh()
1633 		printk("expected NLMSG_ERROR, got %d", (int)req.nh.nlmsg_type);  in xfrm_spdinfo_set_thresh()
1648 		struct nlmsghdr			nh;  in xfrm_spdinfo_attrs()  member
1663 	req.nh.nlmsg_len	= NLMSG_LENGTH(sizeof(req.unused));  in xfrm_spdinfo_attrs()
1664 	req.nh.nlmsg_type	= XFRM_MSG_GETSPDINFO;  in xfrm_spdinfo_attrs()
1665 	req.nh.nlmsg_flags	= NLM_F_REQUEST;  in xfrm_spdinfo_attrs()
1666 	req.nh.nlmsg_seq	= (*seq)++;  in xfrm_spdinfo_attrs()
1667 	if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) {  in xfrm_spdinfo_attrs()
1675 	} else if (req.nh.nlmsg_type == XFRM_MSG_NEWSPDINFO) {  in xfrm_spdinfo_attrs()
1676 		size_t len = NLMSG_PAYLOAD(&req.nh, sizeof(req.unused));  in xfrm_spdinfo_attrs()
1706 	} else if (req.nh.nlmsg_type != NLMSG_ERROR) {  in xfrm_spdinfo_attrs()
1707 		printk("expected NLMSG_ERROR, got %d", (int)req.nh.nlmsg_type);  in xfrm_spdinfo_attrs()