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 cancel_work_sync(&node->work);
133 skb_queue_purge(&node->rx_queue);
137 /* Increment reference to node. */
138 static struct qrtr_node *qrtr_node_acquire(struct qrtr_node *node)
141 kref_get(&node->ref);
145 /* Decrement reference to node and release as necessary. */
146 static void qrtr_node_release(struct qrtr_node *node)
150 kref_put_mutex(&node->ref, __qrtr_node_release, &qrtr_node_lock);
153 /* Pass an outgoing packet socket buffer to the endpoint driver. */
154 static int qrtr_node_enqueue(struct qrtr_node *node, struct sk_buff *skb)
158 mutex_lock(&node->ep_lock);
160 rc = node->ep->xmit(node->ep, skb);
163 mutex_unlock(&node->ep_lock);
168 /* Lookup node by id.
170 * callers must release with qrtr_node_release()
172 static struct qrtr_node *qrtr_node_lookup(unsigned int nid)
174 struct qrtr_node *node;
176 mutex_lock(&qrtr_node_lock);
177 node = radix_tree_lookup(&qrtr_nodes, nid);
178 node = qrtr_node_acquire(node);
179 mutex_unlock(&qrtr_node_lock);
184 /* Assign node id to node.
186 * This is mostly useful for automatic node id assignment, based on
187 * the source id in the incoming packet.
189 static void qrtr_node_assign(struct qrtr_node *node, unsigned int nid)
191 if (node->nid != QRTR_EP_NID_AUTO || nid == QRTR_EP_NID_AUTO)
194 mutex_lock(&qrtr_node_lock);
195 radix_tree_insert(&qrtr_nodes, nid, node);
197 mutex_unlock(&qrtr_node_lock);
201 * qrtr_endpoint_post() - post incoming data
202 * @ep: endpoint handle
203 * @data: data pointer
204 * @len: size of data in bytes
206 * Return: 0 on success; negative error code on failure
208 int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
210 struct qrtr_node *node = ep->node;
211 const struct qrtr_hdr *phdr = data;
219 if (len < QRTR_HDR_SIZE || len & 3)
222 ver = le32_to_cpu(phdr->version);
223 size = le32_to_cpu(phdr->size);
224 type = le32_to_cpu(phdr->type);
225 dst = le32_to_cpu(phdr->dst_port_id);
227 psize = (size + 3) & ~3;
229 if (ver != QRTR_PROTO_VER)
232 if (len != psize + QRTR_HDR_SIZE)
235 if (dst != QRTR_PORT_CTRL && type != QRTR_TYPE_DATA)
238 skb = __netdev_alloc_skb(NULL, len, GFP_ATOMIC | __GFP_NOWARN);
242 skb_reset_transport_header(skb);
243 skb_put_data(skb, data, len);
245 skb_queue_tail(&node->rx_queue, skb);
246 schedule_work(&node->work);
250 EXPORT_SYMBOL_GPL(qrtr_endpoint_post);
252 static struct sk_buff *qrtr_alloc_ctrl_packet(u32 type, size_t pkt_len,
253 u32 src_node, u32 dst_node)
255 struct qrtr_hdr *hdr;
258 skb = alloc_skb(QRTR_HDR_SIZE + pkt_len, GFP_KERNEL);
261 skb_reset_transport_header(skb);
263 hdr = skb_put(skb, QRTR_HDR_SIZE);
264 hdr->version = cpu_to_le32(QRTR_PROTO_VER);
265 hdr->type = cpu_to_le32(type);
266 hdr->src_node_id = cpu_to_le32(src_node);
267 hdr->src_port_id = cpu_to_le32(QRTR_PORT_CTRL);
268 hdr->confirm_rx = cpu_to_le32(0);
269 hdr->size = cpu_to_le32(pkt_len);
270 hdr->dst_node_id = cpu_to_le32(dst_node);
271 hdr->dst_port_id = cpu_to_le32(QRTR_PORT_CTRL);
276 /* Allocate and construct a resume-tx packet. */
277 static struct sk_buff *qrtr_alloc_resume_tx(u32 src_node,
278 u32 dst_node, u32 port)
280 const int pkt_len = 20;
284 skb = qrtr_alloc_ctrl_packet(QRTR_TYPE_RESUME_TX, pkt_len,
289 buf = skb_put_zero(skb, 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 = skb_put_zero(skb, pkt_len);
310 buf[0] = cpu_to_le32(QRTR_TYPE_BYE);
315 static struct sk_buff *qrtr_alloc_del_client(struct sockaddr_qrtr *sq)
317 const int pkt_len = 20;
321 skb = qrtr_alloc_ctrl_packet(QRTR_TYPE_DEL_CLIENT, pkt_len,
322 sq->sq_node, QRTR_NODE_BCAST);
326 buf = skb_put_zero(skb, pkt_len);
327 buf[0] = cpu_to_le32(QRTR_TYPE_DEL_CLIENT);
328 buf[1] = cpu_to_le32(sq->sq_node);
329 buf[2] = cpu_to_le32(sq->sq_port);
334 static struct qrtr_sock *qrtr_port_lookup(int port);
335 static void qrtr_port_put(struct qrtr_sock *ipc);
337 /* Handle and route a received packet.
339 * This will auto-reply with resume-tx packet as necessary.
341 static void qrtr_node_rx_work(struct work_struct *work)
343 struct qrtr_node *node = container_of(work, struct qrtr_node, work);
346 while ((skb = skb_dequeue(&node->rx_queue)) != NULL) {
347 const struct qrtr_hdr *phdr;
348 u32 dst_node, dst_port;
349 struct qrtr_sock *ipc;
353 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
354 src_node = le32_to_cpu(phdr->src_node_id);
355 dst_node = le32_to_cpu(phdr->dst_node_id);
356 dst_port = le32_to_cpu(phdr->dst_port_id);
357 confirm = !!phdr->confirm_rx;
359 qrtr_node_assign(node, src_node);
361 ipc = qrtr_port_lookup(dst_port);
365 if (sock_queue_rcv_skb(&ipc->sk, skb))
372 skb = qrtr_alloc_resume_tx(dst_node, node->nid, dst_port);
375 if (qrtr_node_enqueue(node, skb))
382 * qrtr_endpoint_register() - register a new endpoint
383 * @ep: endpoint to register
384 * @nid: desired node id; may be QRTR_EP_NID_AUTO for auto-assignment
385 * Return: 0 on success; negative error code on failure
387 * The specified endpoint must have the xmit function pointer set on call.
389 int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int nid)
391 struct qrtr_node *node;
393 if (!ep || !ep->xmit)
396 node = kzalloc(sizeof(*node), GFP_KERNEL);
400 INIT_WORK(&node->work, qrtr_node_rx_work);
401 kref_init(&node->ref);
402 mutex_init(&node->ep_lock);
403 skb_queue_head_init(&node->rx_queue);
404 node->nid = QRTR_EP_NID_AUTO;
407 qrtr_node_assign(node, nid);
409 mutex_lock(&qrtr_node_lock);
410 list_add(&node->item, &qrtr_all_nodes);
411 mutex_unlock(&qrtr_node_lock);
416 EXPORT_SYMBOL_GPL(qrtr_endpoint_register);
419 * qrtr_endpoint_unregister - unregister endpoint
420 * @ep: endpoint to unregister
422 void qrtr_endpoint_unregister(struct qrtr_endpoint *ep)
424 struct qrtr_node *node = ep->node;
427 mutex_lock(&node->ep_lock);
429 mutex_unlock(&node->ep_lock);
431 /* Notify the local controller about the event */
432 skb = qrtr_alloc_local_bye(node->nid);
434 qrtr_local_enqueue(NULL, skb);
436 qrtr_node_release(node);
439 EXPORT_SYMBOL_GPL(qrtr_endpoint_unregister);
441 /* Lookup socket by port.
443 * Callers must release with qrtr_port_put()
445 static struct qrtr_sock *qrtr_port_lookup(int port)
447 struct qrtr_sock *ipc;
449 if (port == QRTR_PORT_CTRL)
452 mutex_lock(&qrtr_port_lock);
453 ipc = idr_find(&qrtr_ports, port);
456 mutex_unlock(&qrtr_port_lock);
461 /* Release acquired socket. */
462 static void qrtr_port_put(struct qrtr_sock *ipc)
467 /* Remove port assignment. */
468 static void qrtr_port_remove(struct qrtr_sock *ipc)
471 int port = ipc->us.sq_port;
473 skb = qrtr_alloc_del_client(&ipc->us);
475 skb_set_owner_w(skb, &ipc->sk);
476 qrtr_bcast_enqueue(NULL, skb);
479 if (port == QRTR_PORT_CTRL)
482 __sock_put(&ipc->sk);
484 mutex_lock(&qrtr_port_lock);
485 idr_remove(&qrtr_ports, port);
486 mutex_unlock(&qrtr_port_lock);
489 /* Assign port number to socket.
491 * Specify port in the integer pointed to by port, and it will be adjusted
492 * on return as necesssary.
495 * 0: Assign ephemeral port in [QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET]
496 * <QRTR_MIN_EPH_SOCKET: Specified; requires CAP_NET_ADMIN
497 * >QRTR_MIN_EPH_SOCKET: Specified; available to all
499 static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
503 mutex_lock(&qrtr_port_lock);
505 rc = idr_alloc(&qrtr_ports, ipc,
506 QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET + 1,
510 } else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
512 } else if (*port == QRTR_PORT_CTRL) {
513 rc = idr_alloc(&qrtr_ports, ipc, 0, 1, GFP_ATOMIC);
515 rc = idr_alloc(&qrtr_ports, ipc, *port, *port + 1, GFP_ATOMIC);
519 mutex_unlock(&qrtr_port_lock);
531 /* Reset all non-control ports */
532 static void qrtr_reset_ports(void)
534 struct qrtr_sock *ipc;
537 mutex_lock(&qrtr_port_lock);
538 idr_for_each_entry(&qrtr_ports, ipc, id) {
539 /* Don't reset control port */
544 ipc->sk.sk_err = ENETRESET;
545 wake_up_interruptible(sk_sleep(&ipc->sk));
548 mutex_unlock(&qrtr_port_lock);
551 /* Bind socket to address.
553 * Socket should be locked upon call.
555 static int __qrtr_bind(struct socket *sock,
556 const struct sockaddr_qrtr *addr, int zapped)
558 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
559 struct sock *sk = sock->sk;
564 if (!zapped && addr->sq_port == ipc->us.sq_port)
567 port = addr->sq_port;
568 rc = qrtr_port_assign(ipc, &port);
572 /* unbind previous, if any */
574 qrtr_port_remove(ipc);
575 ipc->us.sq_port = port;
577 sock_reset_flag(sk, SOCK_ZAPPED);
579 /* Notify all open ports about the new controller */
580 if (port == QRTR_PORT_CTRL)
586 /* Auto bind to an ephemeral port. */
587 static int qrtr_autobind(struct socket *sock)
589 struct sock *sk = sock->sk;
590 struct sockaddr_qrtr addr;
592 if (!sock_flag(sk, SOCK_ZAPPED))
595 addr.sq_family = AF_QIPCRTR;
596 addr.sq_node = qrtr_local_nid;
599 return __qrtr_bind(sock, &addr, 1);
602 /* Bind socket to specified sockaddr. */
603 static int qrtr_bind(struct socket *sock, struct sockaddr *saddr, int len)
605 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
606 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
607 struct sock *sk = sock->sk;
610 if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
613 if (addr->sq_node != ipc->us.sq_node)
617 rc = __qrtr_bind(sock, addr, sock_flag(sk, SOCK_ZAPPED));
623 /* Queue packet to local peer socket. */
624 static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb)
626 const struct qrtr_hdr *phdr;
627 struct qrtr_sock *ipc;
629 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
631 ipc = qrtr_port_lookup(le32_to_cpu(phdr->dst_port_id));
632 if (!ipc || &ipc->sk == skb->sk) { /* do not send to self */
637 if (sock_queue_rcv_skb(&ipc->sk, skb)) {
648 /* Queue packet for broadcast. */
649 static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb)
651 struct sk_buff *skbn;
653 mutex_lock(&qrtr_node_lock);
654 list_for_each_entry(node, &qrtr_all_nodes, item) {
655 skbn = skb_clone(skb, GFP_KERNEL);
658 skb_set_owner_w(skbn, skb->sk);
659 qrtr_node_enqueue(node, skbn);
661 mutex_unlock(&qrtr_node_lock);
663 qrtr_local_enqueue(NULL, skb);
668 static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
670 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
671 int (*enqueue_fn)(struct qrtr_node *, struct sk_buff *);
672 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
673 struct sock *sk = sock->sk;
674 struct qrtr_node *node;
675 struct qrtr_hdr *hdr;
680 if (msg->msg_flags & ~(MSG_DONTWAIT))
689 if (msg->msg_namelen < sizeof(*addr)) {
694 if (addr->sq_family != AF_QIPCRTR) {
699 rc = qrtr_autobind(sock);
704 } else if (sk->sk_state == TCP_ESTABLISHED) {
712 if (addr->sq_node == QRTR_NODE_BCAST) {
713 if (addr->sq_port != QRTR_PORT_CTRL &&
714 qrtr_local_nid != QRTR_NODE_BCAST) {
718 enqueue_fn = qrtr_bcast_enqueue;
719 } else if (addr->sq_node == ipc->us.sq_node) {
720 enqueue_fn = qrtr_local_enqueue;
722 node = qrtr_node_lookup(addr->sq_node);
727 enqueue_fn = qrtr_node_enqueue;
730 plen = (len + 3) & ~3;
731 skb = sock_alloc_send_skb(sk, plen + QRTR_HDR_SIZE,
732 msg->msg_flags & MSG_DONTWAIT, &rc);
736 skb_reset_transport_header(skb);
737 skb_put(skb, len + QRTR_HDR_SIZE);
739 hdr = (struct qrtr_hdr *)skb_transport_header(skb);
740 hdr->version = cpu_to_le32(QRTR_PROTO_VER);
741 hdr->src_node_id = cpu_to_le32(ipc->us.sq_node);
742 hdr->src_port_id = cpu_to_le32(ipc->us.sq_port);
743 hdr->confirm_rx = cpu_to_le32(0);
744 hdr->size = cpu_to_le32(len);
745 hdr->dst_node_id = cpu_to_le32(addr->sq_node);
746 hdr->dst_port_id = cpu_to_le32(addr->sq_port);
748 rc = skb_copy_datagram_from_iter(skb, QRTR_HDR_SIZE,
749 &msg->msg_iter, len);
756 rc = skb_pad(skb, plen - len);
759 skb_put(skb, plen - len);
762 if (ipc->us.sq_port == QRTR_PORT_CTRL) {
769 /* control messages already require the type as 'command' */
770 skb_copy_bits(skb, QRTR_HDR_SIZE, &hdr->type, 4);
772 hdr->type = cpu_to_le32(QRTR_TYPE_DATA);
775 rc = enqueue_fn(node, skb);
780 qrtr_node_release(node);
786 static int qrtr_recvmsg(struct socket *sock, struct msghdr *msg,
787 size_t size, int flags)
789 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
790 const struct qrtr_hdr *phdr;
791 struct sock *sk = sock->sk;
797 if (sock_flag(sk, SOCK_ZAPPED)) {
799 return -EADDRNOTAVAIL;
802 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
803 flags & MSG_DONTWAIT, &rc);
809 phdr = (const struct qrtr_hdr *)skb_transport_header(skb);
810 copied = le32_to_cpu(phdr->size);
813 msg->msg_flags |= MSG_TRUNC;
816 rc = skb_copy_datagram_msg(skb, QRTR_HDR_SIZE, msg, copied);
822 /* There is an anonymous 2-byte hole after sq_family,
823 * make sure to clear it.
825 memset(addr, 0, sizeof(*addr));
827 addr->sq_family = AF_QIPCRTR;
828 addr->sq_node = le32_to_cpu(phdr->src_node_id);
829 addr->sq_port = le32_to_cpu(phdr->src_port_id);
830 msg->msg_namelen = sizeof(*addr);
834 skb_free_datagram(sk, skb);
840 static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
843 DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
844 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
845 struct sock *sk = sock->sk;
848 if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
853 sk->sk_state = TCP_CLOSE;
854 sock->state = SS_UNCONNECTED;
856 rc = qrtr_autobind(sock);
863 sock->state = SS_CONNECTED;
864 sk->sk_state = TCP_ESTABLISHED;
871 static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
874 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
875 struct sockaddr_qrtr qaddr;
876 struct sock *sk = sock->sk;
880 if (sk->sk_state != TCP_ESTABLISHED) {
891 *len = sizeof(qaddr);
892 qaddr.sq_family = AF_QIPCRTR;
894 memcpy(saddr, &qaddr, sizeof(qaddr));
899 static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
901 void __user *argp = (void __user *)arg;
902 struct qrtr_sock *ipc = qrtr_sk(sock->sk);
903 struct sock *sk = sock->sk;
904 struct sockaddr_qrtr *sq;
914 len = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
917 rc = put_user(len, (int __user *)argp);
920 skb = skb_peek(&sk->sk_receive_queue);
922 len = skb->len - QRTR_HDR_SIZE;
923 rc = put_user(len, (int __user *)argp);
926 if (copy_from_user(&ifr, argp, sizeof(ifr))) {
931 sq = (struct sockaddr_qrtr *)&ifr.ifr_addr;
933 if (copy_to_user(argp, &ifr, sizeof(ifr))) {
939 rc = sock_get_timestamp(sk, argp);
962 static int qrtr_release(struct socket *sock)
964 struct sock *sk = sock->sk;
965 struct qrtr_sock *ipc;
973 sk->sk_shutdown = SHUTDOWN_MASK;
974 if (!sock_flag(sk, SOCK_DEAD))
975 sk->sk_state_change(sk);
977 sock_set_flag(sk, SOCK_DEAD);
980 if (!sock_flag(sk, SOCK_ZAPPED))
981 qrtr_port_remove(ipc);
983 skb_queue_purge(&sk->sk_receive_queue);
991 static const struct proto_ops qrtr_proto_ops = {
992 .owner = THIS_MODULE,
993 .family = AF_QIPCRTR,
995 .connect = qrtr_connect,
996 .socketpair = sock_no_socketpair,
997 .accept = sock_no_accept,
998 .listen = sock_no_listen,
999 .sendmsg = qrtr_sendmsg,
1000 .recvmsg = qrtr_recvmsg,
1001 .getname = qrtr_getname,
1002 .ioctl = qrtr_ioctl,
1003 .poll = datagram_poll,
1004 .shutdown = sock_no_shutdown,
1005 .setsockopt = sock_no_setsockopt,
1006 .getsockopt = sock_no_getsockopt,
1007 .release = qrtr_release,
1008 .mmap = sock_no_mmap,
1009 .sendpage = sock_no_sendpage,
1012 static struct proto qrtr_proto = {
1014 .owner = THIS_MODULE,
1015 .obj_size = sizeof(struct qrtr_sock),
1018 static int qrtr_create(struct net *net, struct socket *sock,
1019 int protocol, int kern)
1021 struct qrtr_sock *ipc;
1024 if (sock->type != SOCK_DGRAM)
1027 sk = sk_alloc(net, AF_QIPCRTR, GFP_KERNEL, &qrtr_proto, kern);
1031 sock_set_flag(sk, SOCK_ZAPPED);
1033 sock_init_data(sock, sk);
1034 sock->ops = &qrtr_proto_ops;
1037 ipc->us.sq_family = AF_QIPCRTR;
1038 ipc->us.sq_node = qrtr_local_nid;
1039 ipc->us.sq_port = 0;
1044 static const struct nla_policy qrtr_policy[IFA_MAX + 1] = {
1045 [IFA_LOCAL] = { .type = NLA_U32 },
1048 static int qrtr_addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1049 struct netlink_ext_ack *extack)
1051 struct nlattr *tb[IFA_MAX + 1];
1052 struct ifaddrmsg *ifm;
1055 if (!netlink_capable(skb, CAP_NET_ADMIN))
1058 if (!netlink_capable(skb, CAP_SYS_ADMIN))
1063 rc = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, qrtr_policy, extack);
1067 ifm = nlmsg_data(nlh);
1071 qrtr_local_nid = nla_get_u32(tb[IFA_LOCAL]);
1075 static const struct net_proto_family qrtr_family = {
1076 .owner = THIS_MODULE,
1077 .family = AF_QIPCRTR,
1078 .create = qrtr_create,
1081 static int __init qrtr_proto_init(void)
1085 rc = proto_register(&qrtr_proto, 1);
1089 rc = sock_register(&qrtr_family);
1091 proto_unregister(&qrtr_proto);
1095 rtnl_register(PF_QIPCRTR, RTM_NEWADDR, qrtr_addr_doit, NULL, 0);
1099 postcore_initcall(qrtr_proto_init);
1101 static void __exit qrtr_proto_fini(void)
1103 rtnl_unregister(PF_QIPCRTR, RTM_NEWADDR);
1104 sock_unregister(qrtr_family.family);
1105 proto_unregister(&qrtr_proto);
1107 module_exit(qrtr_proto_fini);
1109 MODULE_DESCRIPTION("Qualcomm IPC-router driver");
1110 MODULE_LICENSE("GPL v2");