2 * Copyright (c) 2015, Sony Mobile Communications Inc.
3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 and
7 * only version 2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 #include <linux/module.h>
15 #include <linux/netlink.h>
16 #include <linux/qrtr.h>
17 #include <linux/termios.h> /* For TIOCINQ/OUTQ */
23 #define QRTR_PROTO_VER 1
26 #define QRTR_MIN_EPH_SOCKET 0x4000
27 #define QRTR_MAX_EPH_SOCKET 0x7fff
33 QRTR_TYPE_NEW_SERVER = 4,
34 QRTR_TYPE_DEL_SERVER = 5,
35 QRTR_TYPE_DEL_CLIENT = 6,
36 QRTR_TYPE_RESUME_TX = 7,
42 * struct qrtr_hdr - (I|R)PCrouter packet header
43 * @version: protocol version
44 * @type: packet type; one of QRTR_TYPE_*
45 * @src_node_id: source node
46 * @src_port_id: source port
47 * @confirm_rx: boolean; whether a resume-tx packet should be send in reply
48 * @size: length of packet, excluding this header
49 * @dst_node_id: destination node
50 * @dst_port_id: destination port
63 #define QRTR_HDR_SIZE sizeof(struct qrtr_hdr)
64 #define QRTR_NODE_BCAST ((unsigned int)-1)
65 #define QRTR_PORT_CTRL ((unsigned int)-2)
68 /* WARNING: sk must be the first member */
70 struct sockaddr_qrtr us;
71 struct sockaddr_qrtr peer;
74 static inline struct qrtr_sock *qrtr_sk(struct sock *sk)
76 BUILD_BUG_ON(offsetof(struct qrtr_sock, sk) != 0);
77 return container_of(sk, struct qrtr_sock, sk);
80 static unsigned int qrtr_local_nid = -1;
83 static RADIX_TREE(qrtr_nodes, GFP_KERNEL);
85 static LIST_HEAD(qrtr_all_nodes);
86 /* lock for qrtr_nodes, qrtr_all_nodes and node reference */
87 static DEFINE_MUTEX(qrtr_node_lock);
89 /* local port allocation management */
90 static DEFINE_IDR(qrtr_ports);
91 static DEFINE_MUTEX(qrtr_port_lock);
94 * struct qrtr_node - endpoint node
95 * @ep_lock: lock for endpoint management and callbacks
97 * @ref: reference count for node
99 * @rx_queue: receive queue
100 * @work: scheduled work struct for recv work
101 * @item: list item for broadcast list
104 struct mutex ep_lock;
105 struct qrtr_endpoint *ep;
109 struct sk_buff_head rx_queue;
110 struct work_struct work;
111 struct list_head item;
114 static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb);
115 static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb);
117 /* Release node resources and free the node.
119 * Do not call directly, use qrtr_node_release. To be used with
120 * kref_put_mutex. As such, the node mutex is expected to be locked on call.
122 static void __qrtr_node_release(struct kref *kref)
124 struct qrtr_node *node = container_of(kref, struct qrtr_node, ref);
126 if (node->nid != QRTR_EP_NID_AUTO)
127 radix_tree_delete(&qrtr_nodes, node->nid);
129 list_del(&node->item);
130 mutex_unlock(&qrtr_node_lock);
132 skb_queue_purge(&node->rx_queue);
136 /* Increment reference to node. */
137 static struct qrtr_node *qrtr_node_acquire(struct qrtr_node *node)
140 kref_get(&node->ref);
144 /* Decrement reference to node and release as necessary. */
145 static void qrtr_node_release(struct qrtr_node *node)
149 kref_put_mutex(&node->ref, __qrtr_node_release, &qrtr_node_lock);
152 /* Pass an outgoing packet socket buffer to the endpoint driver. */
153 static int qrtr_node_enqueue(struct qrtr_node *node, struct sk_buff *skb)
157 mutex_lock(&node->ep_lock);
159 rc = node->ep->xmit(node->ep, skb);
162 mutex_unlock(&node->ep_lock);
167 /* Lookup node by id.
169 * callers must release with qrtr_node_release()
171 static struct qrtr_node *qrtr_node_lookup(unsigned int nid)
173 struct qrtr_node *node;
175 mutex_lock(&qrtr_node_lock);
176 node = radix_tree_lookup(&qrtr_nodes, nid);
177 node = qrtr_node_acquire(node);
178 mutex_unlock(&qrtr_node_lock);
183 /* Assign node id to node.
185 * This is mostly useful for automatic node id assignment, based on
186 * the source id in the incoming packet.
188 static void qrtr_node_assign(struct qrtr_node *node, unsigned int nid)
190 if (node->nid != QRTR_EP_NID_AUTO || nid == QRTR_EP_NID_AUTO)
193 mutex_lock(&qrtr_node_lock);
194 radix_tree_insert(&qrtr_nodes, nid, node);
196 mutex_unlock(&qrtr_node_lock);
200 * qrtr_endpoint_post() - post incoming data
201 * @ep: endpoint handle
202 * @data: data pointer
203 * @len: size of data in bytes
205 * Return: 0 on success; negative error code on failure
207 int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
209 struct qrtr_node *node = ep->node;
210 const struct qrtr_hdr *phdr = data;
218 if (len < QRTR_HDR_SIZE || len & 3)
221 ver = le32_to_cpu(phdr->version);
222 size = le32_to_cpu(phdr->size);
223 type = le32_to_cpu(phdr->type);
224 dst = le32_to_cpu(phdr->dst_port_id);
226 psize = (size + 3) & ~3;
228 if (ver != QRTR_PROTO_VER)
231 if (len != psize + QRTR_HDR_SIZE)
234 if (dst != QRTR_PORT_CTRL && type != QRTR_TYPE_DATA)
237 skb = netdev_alloc_skb(NULL, len);
241 skb_reset_transport_header(skb);
242 memcpy(skb_put(skb, len), data, len);
244 skb_queue_tail(&node->rx_queue, skb);
245 schedule_work(&node->work);
249 EXPORT_SYMBOL_GPL(qrtr_endpoint_post);
251 static struct sk_buff *qrtr_alloc_ctrl_packet(u32 type, size_t pkt_len,
252 u32 src_node, u32 dst_node)
254 struct qrtr_hdr *hdr;
257 skb = alloc_skb(QRTR_HDR_SIZE + pkt_len, GFP_KERNEL);
260 skb_reset_transport_header(skb);
262 hdr = (struct qrtr_hdr *)skb_put(skb, QRTR_HDR_SIZE);
263 hdr->version = cpu_to_le32(QRTR_PROTO_VER);
264 hdr->type = cpu_to_le32(type);
265 hdr->src_node_id = cpu_to_le32(src_node);
266 hdr->src_port_id = cpu_to_le32(QRTR_PORT_CTRL);
267 hdr->confirm_rx = cpu_to_le32(0);
268 hdr->size = cpu_to_le32(pkt_len);
269 hdr->dst_node_id = cpu_to_le32(dst_node);
270 hdr->dst_port_id = cpu_to_le32(QRTR_PORT_CTRL);
275 /* Allocate and construct a resume-tx packet. */
276 static struct sk_buff *qrtr_alloc_resume_tx(u32 src_node,
277 u32 dst_node, u32 port)
279 const int pkt_len = 20;
283 skb = qrtr_alloc_ctrl_packet(QRTR_TYPE_RESUME_TX, pkt_len,
288 buf = (__le32 *)skb_put(skb, pkt_len);
289 memset(buf, 0, pkt_len);
290 buf[0] = cpu_to_le32(QRTR_TYPE_RESUME_TX);
291 buf[1] = cpu_to_le32(src_node);
292 buf[2] = cpu_to_le32(port);
297 /* Allocate and construct a BYE message to signal remote termination */
298 static struct sk_buff *qrtr_alloc_local_bye(u32 src_node)
300 const int pkt_len = 20;
304 skb = qrtr_alloc_ctrl_packet(QRTR_TYPE_BYE, pkt_len,
305 src_node, qrtr_local_nid);
309 buf = (__le32 *)skb_put(skb, pkt_len);
310 memset(buf, 0, pkt_len);
311 buf[0] = cpu_to_le32(QRTR_TYPE_BYE);
316 static struct sk_buff *qrtr_alloc_del_client(struct sockaddr_qrtr *sq)
318 const int pkt_len = 20;
322 skb = qrtr_alloc_ctrl_packet(QRTR_TYPE_DEL_CLIENT, pkt_len,
323 sq->sq_node, QRTR_NODE_BCAST);
327 buf = (__le32 *)skb_put(skb, pkt_len);
328 memset(buf, 0, pkt_len);
329 buf[0] = cpu_to_le32(QRTR_TYPE_DEL_CLIENT);
330 buf[1] = cpu_to_le32(sq->sq_node);
331 buf[2] = cpu_to_le32(sq->sq_port);
336 static struct qrtr_sock *qrtr_port_lookup(int port);
337 static void qrtr_port_put(struct qrtr_sock *ipc);
339 /* Handle and route a received packet.
341 * This will auto-reply with resume-tx packet as necessary.
343 static void qrtr_node_rx_work(struct work_struct *work)
345 struct qrtr_node *node = container_of(work, struct qrtr_node, work);
348 while ((skb = skb_dequeue(&node->rx_queue)) != NULL) {
349 const struct qrtr_hdr *phdr;
350 u32 dst_node, dst_port;
351 struct qrtr_sock *ipc;
355 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
356 src_node = le32_to_cpu(phdr->src_node_id);
357 dst_node = le32_to_cpu(phdr->dst_node_id);
358 dst_port = le32_to_cpu(phdr->dst_port_id);
359 confirm = !!phdr->confirm_rx;
361 qrtr_node_assign(node, src_node);
363 ipc = qrtr_port_lookup(dst_port);
367 if (sock_queue_rcv_skb(&ipc->sk, skb))
374 skb = qrtr_alloc_resume_tx(dst_node, node->nid, dst_port);
377 if (qrtr_node_enqueue(node, skb))
384 * qrtr_endpoint_register() - register a new endpoint
385 * @ep: endpoint to register
386 * @nid: desired node id; may be QRTR_EP_NID_AUTO for auto-assignment
387 * Return: 0 on success; negative error code on failure
389 * The specified endpoint must have the xmit function pointer set on call.
391 int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int nid)
393 struct qrtr_node *node;
395 if (!ep || !ep->xmit)
398 node = kzalloc(sizeof(*node), GFP_KERNEL);
402 INIT_WORK(&node->work, qrtr_node_rx_work);
403 kref_init(&node->ref);
404 mutex_init(&node->ep_lock);
405 skb_queue_head_init(&node->rx_queue);
406 node->nid = QRTR_EP_NID_AUTO;
409 qrtr_node_assign(node, nid);
411 mutex_lock(&qrtr_node_lock);
412 list_add(&node->item, &qrtr_all_nodes);
413 mutex_unlock(&qrtr_node_lock);
418 EXPORT_SYMBOL_GPL(qrtr_endpoint_register);
421 * qrtr_endpoint_unregister - unregister endpoint
422 * @ep: endpoint to unregister
424 void qrtr_endpoint_unregister(struct qrtr_endpoint *ep)
426 struct qrtr_node *node = ep->node;
429 mutex_lock(&node->ep_lock);
431 mutex_unlock(&node->ep_lock);
433 /* Notify the local controller about the event */
434 skb = qrtr_alloc_local_bye(node->nid);
436 qrtr_local_enqueue(NULL, skb);
438 qrtr_node_release(node);
441 EXPORT_SYMBOL_GPL(qrtr_endpoint_unregister);
443 /* Lookup socket by port.
445 * Callers must release with qrtr_port_put()
447 static struct qrtr_sock *qrtr_port_lookup(int port)
449 struct qrtr_sock *ipc;
451 if (port == QRTR_PORT_CTRL)
454 mutex_lock(&qrtr_port_lock);
455 ipc = idr_find(&qrtr_ports, port);
458 mutex_unlock(&qrtr_port_lock);
463 /* Release acquired socket. */
464 static void qrtr_port_put(struct qrtr_sock *ipc)
469 /* Remove port assignment. */
470 static void qrtr_port_remove(struct qrtr_sock *ipc)
473 int port = ipc->us.sq_port;
475 skb = qrtr_alloc_del_client(&ipc->us);
477 skb_set_owner_w(skb, &ipc->sk);
478 qrtr_bcast_enqueue(NULL, skb);
481 if (port == QRTR_PORT_CTRL)
484 __sock_put(&ipc->sk);
486 mutex_lock(&qrtr_port_lock);
487 idr_remove(&qrtr_ports, port);
488 mutex_unlock(&qrtr_port_lock);
491 /* Assign port number to socket.
493 * Specify port in the integer pointed to by port, and it will be adjusted
494 * on return as necesssary.
497 * 0: Assign ephemeral port in [QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET]
498 * <QRTR_MIN_EPH_SOCKET: Specified; requires CAP_NET_ADMIN
499 * >QRTR_MIN_EPH_SOCKET: Specified; available to all
501 static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
505 mutex_lock(&qrtr_port_lock);
507 rc = idr_alloc(&qrtr_ports, ipc,
508 QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET + 1,
512 } else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
514 } else if (*port == QRTR_PORT_CTRL) {
515 rc = idr_alloc(&qrtr_ports, ipc, 0, 1, GFP_ATOMIC);
517 rc = idr_alloc(&qrtr_ports, ipc, *port, *port + 1, GFP_ATOMIC);
521 mutex_unlock(&qrtr_port_lock);
533 /* Bind socket to address.
535 * Socket should be locked upon call.
537 static int __qrtr_bind(struct socket *sock,
538 const struct sockaddr_qrtr *addr, int zapped)
540 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
541 struct sock *sk = sock->sk;
546 if (!zapped && addr->sq_port == ipc->us.sq_port)
549 port = addr->sq_port;
550 rc = qrtr_port_assign(ipc, &port);
554 /* unbind previous, if any */
556 qrtr_port_remove(ipc);
557 ipc->us.sq_port = port;
559 sock_reset_flag(sk, SOCK_ZAPPED);
564 /* Auto bind to an ephemeral port. */
565 static int qrtr_autobind(struct socket *sock)
567 struct sock *sk = sock->sk;
568 struct sockaddr_qrtr addr;
570 if (!sock_flag(sk, SOCK_ZAPPED))
573 addr.sq_family = AF_QIPCRTR;
574 addr.sq_node = qrtr_local_nid;
577 return __qrtr_bind(sock, &addr, 1);
580 /* Bind socket to specified sockaddr. */
581 static int qrtr_bind(struct socket *sock, struct sockaddr *saddr, int len)
583 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
584 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
585 struct sock *sk = sock->sk;
588 if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
591 if (addr->sq_node != ipc->us.sq_node)
595 rc = __qrtr_bind(sock, addr, sock_flag(sk, SOCK_ZAPPED));
601 /* Queue packet to local peer socket. */
602 static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb)
604 const struct qrtr_hdr *phdr;
605 struct qrtr_sock *ipc;
607 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
609 ipc = qrtr_port_lookup(le32_to_cpu(phdr->dst_port_id));
610 if (!ipc || &ipc->sk == skb->sk) { /* do not send to self */
615 if (sock_queue_rcv_skb(&ipc->sk, skb)) {
626 /* Queue packet for broadcast. */
627 static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb)
629 struct sk_buff *skbn;
631 mutex_lock(&qrtr_node_lock);
632 list_for_each_entry(node, &qrtr_all_nodes, item) {
633 skbn = skb_clone(skb, GFP_KERNEL);
636 skb_set_owner_w(skbn, skb->sk);
637 qrtr_node_enqueue(node, skbn);
639 mutex_unlock(&qrtr_node_lock);
641 qrtr_local_enqueue(node, skb);
646 static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
648 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
649 int (*enqueue_fn)(struct qrtr_node *, struct sk_buff *);
650 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
651 struct sock *sk = sock->sk;
652 struct qrtr_node *node;
653 struct qrtr_hdr *hdr;
658 if (msg->msg_flags & ~(MSG_DONTWAIT))
667 if (msg->msg_namelen < sizeof(*addr)) {
672 if (addr->sq_family != AF_QIPCRTR) {
677 rc = qrtr_autobind(sock);
682 } else if (sk->sk_state == TCP_ESTABLISHED) {
690 if (addr->sq_node == QRTR_NODE_BCAST) {
691 enqueue_fn = qrtr_bcast_enqueue;
692 } else if (addr->sq_node == ipc->us.sq_node) {
693 enqueue_fn = qrtr_local_enqueue;
695 enqueue_fn = qrtr_node_enqueue;
696 node = qrtr_node_lookup(addr->sq_node);
703 plen = (len + 3) & ~3;
704 skb = sock_alloc_send_skb(sk, plen + QRTR_HDR_SIZE,
705 msg->msg_flags & MSG_DONTWAIT, &rc);
709 skb_reset_transport_header(skb);
710 skb_put(skb, len + QRTR_HDR_SIZE);
712 hdr = (struct qrtr_hdr *)skb_transport_header(skb);
713 hdr->version = cpu_to_le32(QRTR_PROTO_VER);
714 hdr->src_node_id = cpu_to_le32(ipc->us.sq_node);
715 hdr->src_port_id = cpu_to_le32(ipc->us.sq_port);
716 hdr->confirm_rx = cpu_to_le32(0);
717 hdr->size = cpu_to_le32(len);
718 hdr->dst_node_id = cpu_to_le32(addr->sq_node);
719 hdr->dst_port_id = cpu_to_le32(addr->sq_port);
721 rc = skb_copy_datagram_from_iter(skb, QRTR_HDR_SIZE,
722 &msg->msg_iter, len);
729 rc = skb_pad(skb, plen - len);
732 skb_put(skb, plen - len);
735 if (ipc->us.sq_port == QRTR_PORT_CTRL) {
742 /* control messages already require the type as 'command' */
743 skb_copy_bits(skb, QRTR_HDR_SIZE, &hdr->type, 4);
745 hdr->type = cpu_to_le32(QRTR_TYPE_DATA);
748 rc = enqueue_fn(node, skb);
753 qrtr_node_release(node);
759 static int qrtr_recvmsg(struct socket *sock, struct msghdr *msg,
760 size_t size, int flags)
762 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
763 const struct qrtr_hdr *phdr;
764 struct sock *sk = sock->sk;
770 if (sock_flag(sk, SOCK_ZAPPED)) {
772 return -EADDRNOTAVAIL;
775 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
776 flags & MSG_DONTWAIT, &rc);
782 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
783 copied = le32_to_cpu(phdr->size);
786 msg->msg_flags |= MSG_TRUNC;
789 rc = skb_copy_datagram_msg(skb, QRTR_HDR_SIZE, msg, copied);
795 addr->sq_family = AF_QIPCRTR;
796 addr->sq_node = le32_to_cpu(phdr->src_node_id);
797 addr->sq_port = le32_to_cpu(phdr->src_port_id);
798 msg->msg_namelen = sizeof(*addr);
802 skb_free_datagram(sk, skb);
808 static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
811 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
812 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
813 struct sock *sk = sock->sk;
816 if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
821 sk->sk_state = TCP_CLOSE;
822 sock->state = SS_UNCONNECTED;
824 rc = qrtr_autobind(sock);
831 sock->state = SS_CONNECTED;
832 sk->sk_state = TCP_ESTABLISHED;
839 static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
842 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
843 struct sockaddr_qrtr qaddr;
844 struct sock *sk = sock->sk;
848 if (sk->sk_state != TCP_ESTABLISHED) {
859 *len = sizeof(qaddr);
860 qaddr.sq_family = AF_QIPCRTR;
862 memcpy(saddr, &qaddr, sizeof(qaddr));
867 static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
869 void __user *argp = (void __user *)arg;
870 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
871 struct sock *sk = sock->sk;
872 struct sockaddr_qrtr *sq;
882 len = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
885 rc = put_user(len, (int __user *)argp);
888 skb = skb_peek(&sk->sk_receive_queue);
890 len = skb->len - QRTR_HDR_SIZE;
891 rc = put_user(len, (int __user *)argp);
894 if (copy_from_user(&ifr, argp, sizeof(ifr))) {
899 sq = (struct sockaddr_qrtr *)&ifr.ifr_addr;
901 if (copy_to_user(argp, &ifr, sizeof(ifr))) {
907 rc = sock_get_timestamp(sk, argp);
930 static int qrtr_release(struct socket *sock)
932 struct sock *sk = sock->sk;
933 struct qrtr_sock *ipc;
941 sk->sk_shutdown = SHUTDOWN_MASK;
942 if (!sock_flag(sk, SOCK_DEAD))
943 sk->sk_state_change(sk);
945 sock_set_flag(sk, SOCK_DEAD);
948 if (!sock_flag(sk, SOCK_ZAPPED))
949 qrtr_port_remove(ipc);
951 skb_queue_purge(&sk->sk_receive_queue);
959 static const struct proto_ops qrtr_proto_ops = {
960 .owner = THIS_MODULE,
961 .family = AF_QIPCRTR,
963 .connect = qrtr_connect,
964 .socketpair = sock_no_socketpair,
965 .accept = sock_no_accept,
966 .listen = sock_no_listen,
967 .sendmsg = qrtr_sendmsg,
968 .recvmsg = qrtr_recvmsg,
969 .getname = qrtr_getname,
971 .poll = datagram_poll,
972 .shutdown = sock_no_shutdown,
973 .setsockopt = sock_no_setsockopt,
974 .getsockopt = sock_no_getsockopt,
975 .release = qrtr_release,
976 .mmap = sock_no_mmap,
977 .sendpage = sock_no_sendpage,
980 static struct proto qrtr_proto = {
982 .owner = THIS_MODULE,
983 .obj_size = sizeof(struct qrtr_sock),
986 static int qrtr_create(struct net *net, struct socket *sock,
987 int protocol, int kern)
989 struct qrtr_sock *ipc;
992 if (sock->type != SOCK_DGRAM)
995 sk = sk_alloc(net, AF_QIPCRTR, GFP_KERNEL, &qrtr_proto, kern);
999 sock_set_flag(sk, SOCK_ZAPPED);
1001 sock_init_data(sock, sk);
1002 sock->ops = &qrtr_proto_ops;
1005 ipc->us.sq_family = AF_QIPCRTR;
1006 ipc->us.sq_node = qrtr_local_nid;
1007 ipc->us.sq_port = 0;
1012 static const struct nla_policy qrtr_policy[IFA_MAX + 1] = {
1013 [IFA_LOCAL] = { .type = NLA_U32 },
1016 static int qrtr_addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1017 struct netlink_ext_ack *extack)
1019 struct nlattr *tb[IFA_MAX + 1];
1020 struct ifaddrmsg *ifm;
1023 if (!netlink_capable(skb, CAP_NET_ADMIN))
1026 if (!netlink_capable(skb, CAP_SYS_ADMIN))
1031 rc = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, qrtr_policy, extack);
1035 ifm = nlmsg_data(nlh);
1039 qrtr_local_nid = nla_get_u32(tb[IFA_LOCAL]);
1043 static const struct net_proto_family qrtr_family = {
1044 .owner = THIS_MODULE,
1045 .family = AF_QIPCRTR,
1046 .create = qrtr_create,
1049 static int __init qrtr_proto_init(void)
1053 rc = proto_register(&qrtr_proto, 1);
1057 rc = sock_register(&qrtr_family);
1059 proto_unregister(&qrtr_proto);
1063 rtnl_register(PF_QIPCRTR, RTM_NEWADDR, qrtr_addr_doit, NULL, NULL);
1067 module_init(qrtr_proto_init);
1069 static void __exit qrtr_proto_fini(void)
1071 rtnl_unregister(PF_QIPCRTR, RTM_NEWADDR);
1072 sock_unregister(qrtr_family.family);
1073 proto_unregister(&qrtr_proto);
1075 module_exit(qrtr_proto_fini);
1077 MODULE_DESCRIPTION("Qualcomm IPC-router driver");
1078 MODULE_LICENSE("GPL v2");