#include <linux/module.h>
#include <linux/net.h>
+#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/poll.h>
#include <linux/proc_fs.h>
+#include <linux/key-type.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"
unsigned rxrpc_debug; // = RXRPC_DEBUG_KPROTO;
module_param_named(debug, rxrpc_debug, uint, S_IWUSR | S_IRUGO);
-MODULE_PARM_DESC(rxrpc_debug, "RxRPC debugging mask");
+MODULE_PARM_DESC(debug, "RxRPC debugging mask");
static int sysctl_rxrpc_max_qlen __read_mostly = 10;
/* count of skbs currently in use */
atomic_t rxrpc_n_skbs;
+struct workqueue_struct *rxrpc_workqueue;
+
static void rxrpc_sock_destructor(struct sock *);
/*
static void rxrpc_write_space(struct sock *sk)
{
_enter("%p", sk);
- read_lock(&sk->sk_callback_lock);
+ rcu_read_lock();
if (rxrpc_writable(sk)) {
- if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
- wake_up_interruptible(sk->sk_sleep);
- sk_wake_async(sk, 2, POLL_OUT);
+ struct socket_wq *wq = rcu_dereference(sk->sk_wq);
+
+ if (wq_has_sleeper(wq))
+ wake_up_interruptible(&wq->wait);
+ sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
}
- read_unlock(&sk->sk_callback_lock);
+ rcu_read_unlock();
}
/*
switch (srx->transport.family) {
case AF_INET:
- _debug("INET: %x @ %u.%u.%u.%u",
+ _debug("INET: %x @ %pI4",
ntohs(srx->transport.sin.sin_port),
- NIPQUAD(srx->transport.sin.sin_addr));
+ &srx->transport.sin.sin_addr);
if (srx->transport_len > 8)
memset((void *)&srx->transport + 8, 0,
srx->transport_len - 8);
*/
static struct rxrpc_transport *rxrpc_name_to_transport(struct socket *sock,
struct sockaddr *addr,
- int addr_len, int flags)
+ int addr_len, int flags,
+ gfp_t gfp)
{
struct sockaddr_rxrpc *srx = (struct sockaddr_rxrpc *) addr;
struct rxrpc_transport *trans;
return ERR_PTR(-EAFNOSUPPORT);
/* find a remote transport endpoint from the local one */
- peer = rxrpc_get_peer(srx, GFP_KERNEL);
+ peer = rxrpc_get_peer(srx, gfp);
if (IS_ERR(peer))
- return ERR_PTR(PTR_ERR(peer));
+ return ERR_CAST(peer);
/* find a transport */
- trans = rxrpc_get_transport(rx->local, peer, GFP_KERNEL);
+ trans = rxrpc_get_transport(rx->local, peer, gfp);
rxrpc_put_peer(peer);
_leave(" = %p", trans);
return trans;
}
+/**
+ * rxrpc_kernel_begin_call - Allow a kernel service to begin a call
+ * @sock: The socket on which to make the call
+ * @srx: The address of the peer to contact (defaults to socket setting)
+ * @key: The security context to use (defaults to socket setting)
+ * @user_call_ID: The ID to use
+ *
+ * Allow a kernel service to begin a call on the nominated socket. This just
+ * sets up all the internal tracking structures and allocates connection and
+ * call IDs as appropriate. The call to be used is returned.
+ *
+ * The default socket destination address and security may be overridden by
+ * supplying @srx and @key.
+ */
+struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
+ struct sockaddr_rxrpc *srx,
+ struct key *key,
+ unsigned long user_call_ID,
+ gfp_t gfp)
+{
+ struct rxrpc_conn_bundle *bundle;
+ struct rxrpc_transport *trans;
+ struct rxrpc_call *call;
+ struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
+ __be16 service_id;
+
+ _enter(",,%x,%lx", key_serial(key), user_call_ID);
+
+ lock_sock(&rx->sk);
+
+ if (srx) {
+ trans = rxrpc_name_to_transport(sock, (struct sockaddr *) srx,
+ sizeof(*srx), 0, gfp);
+ if (IS_ERR(trans)) {
+ call = ERR_CAST(trans);
+ trans = NULL;
+ goto out_notrans;
+ }
+ } else {
+ trans = rx->trans;
+ if (!trans) {
+ call = ERR_PTR(-ENOTCONN);
+ goto out_notrans;
+ }
+ atomic_inc(&trans->usage);
+ }
+
+ service_id = rx->service_id;
+ if (srx)
+ service_id = htons(srx->srx_service);
+
+ if (!key)
+ key = rx->key;
+ if (key && !key->payload.data)
+ key = NULL; /* a no-security key */
+
+ bundle = rxrpc_get_bundle(rx, trans, key, service_id, gfp);
+ if (IS_ERR(bundle)) {
+ call = ERR_CAST(bundle);
+ goto out;
+ }
+
+ call = rxrpc_get_client_call(rx, trans, bundle, user_call_ID, true,
+ gfp);
+ rxrpc_put_bundle(trans, bundle);
+out:
+ rxrpc_put_transport(trans);
+out_notrans:
+ release_sock(&rx->sk);
+ _leave(" = %p", call);
+ return call;
+}
+
+EXPORT_SYMBOL(rxrpc_kernel_begin_call);
+
+/**
+ * rxrpc_kernel_end_call - Allow a kernel service to end a call it was using
+ * @call: The call to end
+ *
+ * Allow a kernel service to end a call it was using. The call must be
+ * complete before this is called (the call should be aborted if necessary).
+ */
+void rxrpc_kernel_end_call(struct rxrpc_call *call)
+{
+ _enter("%d{%d}", call->debug_id, atomic_read(&call->usage));
+ rxrpc_remove_user_ID(call->socket, call);
+ rxrpc_put_call(call);
+}
+
+EXPORT_SYMBOL(rxrpc_kernel_end_call);
+
+/**
+ * rxrpc_kernel_intercept_rx_messages - Intercept received RxRPC messages
+ * @sock: The socket to intercept received messages on
+ * @interceptor: The function to pass the messages to
+ *
+ * Allow a kernel service to intercept messages heading for the Rx queue on an
+ * RxRPC socket. They get passed to the specified function instead.
+ * @interceptor should free the socket buffers it is given. @interceptor is
+ * called with the socket receive queue spinlock held and softirqs disabled -
+ * this ensures that the messages will be delivered in the right order.
+ */
+void rxrpc_kernel_intercept_rx_messages(struct socket *sock,
+ rxrpc_interceptor_t interceptor)
+{
+ struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
+
+ _enter("");
+ rx->interceptor = interceptor;
+}
+
+EXPORT_SYMBOL(rxrpc_kernel_intercept_rx_messages);
+
/*
* connect an RxRPC socket
* - this just targets it at a specific destination; no actual connection
return -EBUSY; /* server sockets can't connect as well */
}
- trans = rxrpc_name_to_transport(sock, addr, addr_len, flags);
+ trans = rxrpc_name_to_transport(sock, addr, addr_len, flags,
+ GFP_KERNEL);
if (IS_ERR(trans)) {
release_sock(&rx->sk);
_leave(" = %ld", PTR_ERR(trans));
if (m->msg_name) {
ret = -EISCONN;
trans = rxrpc_name_to_transport(sock, m->msg_name,
- m->msg_namelen, 0);
+ m->msg_namelen, 0, GFP_KERNEL);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
trans = NULL;
* set RxRPC socket options
*/
static int rxrpc_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int optlen)
+ char __user *optval, unsigned int optlen)
{
struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
unsigned min_sec_level;
unsigned int mask;
struct sock *sk = sock->sk;
- poll_wait(file, sk->sk_sleep, wait);
+ sock_poll_wait(file, sk_sleep(sk), wait);
mask = 0;
/* the socket is readable if there are any messages waiting on the Rx
/*
* create an RxRPC socket
*/
-static int rxrpc_create(struct socket *sock, int protocol)
+static int rxrpc_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
{
struct rxrpc_sock *rx;
struct sock *sk;
_enter("%p,%d", sock, protocol);
+ if (!net_eq(net, &init_net))
+ return -EAFNOSUPPORT;
+
/* we support transport protocol UDP only */
if (protocol != PF_INET)
return -EPROTONOSUPPORT;
sock->ops = &rxrpc_rpc_ops;
sock->state = SS_UNCONNECTED;
- sk = sk_alloc(PF_RXRPC, GFP_KERNEL, &rxrpc_proto, 1);
+ sk = sk_alloc(net, PF_RXRPC, GFP_KERNEL, &rxrpc_proto);
if (!sk)
return -ENOMEM;
rxrpc_purge_queue(&sk->sk_receive_queue);
- BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc));
- BUG_TRAP(sk_unhashed(sk));
- BUG_TRAP(!sk->sk_socket);
+ WARN_ON(atomic_read(&sk->sk_wmem_alloc));
+ WARN_ON(!sk_unhashed(sk));
+ WARN_ON(sk->sk_socket);
if (!sock_flag(sk, SOCK_DEAD)) {
printk("Attempt to release alive rxrpc socket: %p\n", sk);
/* try to flush out this socket */
rxrpc_release_calls_on_socket(rx);
- flush_scheduled_work();
+ flush_workqueue(rxrpc_workqueue);
rxrpc_purge_queue(&sk->sk_receive_queue);
if (rx->conn) {
.max_header = sizeof(struct rxrpc_header),
};
-static struct net_proto_family rxrpc_family_ops = {
+static const struct net_proto_family rxrpc_family_ops = {
.family = PF_RXRPC,
.create = rxrpc_create,
.owner = THIS_MODULE,
BUILD_BUG_ON(sizeof(struct rxrpc_skb_priv) > sizeof(dummy_skb->cb));
- rxrpc_epoch = htonl(xtime.tv_sec);
+ rxrpc_epoch = htonl(get_seconds());
+ ret = -ENOMEM;
rxrpc_call_jar = kmem_cache_create(
"rxrpc_call_jar", sizeof(struct rxrpc_call), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
+ SLAB_HWCACHE_ALIGN, NULL);
if (!rxrpc_call_jar) {
printk(KERN_NOTICE "RxRPC: Failed to allocate call jar\n");
- ret = -ENOMEM;
goto error_call_jar;
}
+ rxrpc_workqueue = create_workqueue("krxrpcd");
+ if (!rxrpc_workqueue) {
+ printk(KERN_NOTICE "RxRPC: Failed to allocate work queue\n");
+ goto error_work_queue;
+ }
+
ret = proto_register(&rxrpc_proto, 1);
- if (ret < 0) {
- printk(KERN_CRIT "RxRPC: Cannot register protocol\n");
+ if (ret < 0) {
+ printk(KERN_CRIT "RxRPC: Cannot register protocol\n");
goto error_proto;
}
ret = sock_register(&rxrpc_family_ops);
if (ret < 0) {
- printk(KERN_CRIT "RxRPC: Cannot register socket family\n");
+ printk(KERN_CRIT "RxRPC: Cannot register socket family\n");
goto error_sock;
}
ret = register_key_type(&key_type_rxrpc);
if (ret < 0) {
- printk(KERN_CRIT "RxRPC: Cannot register client key type\n");
+ printk(KERN_CRIT "RxRPC: Cannot register client key type\n");
goto error_key_type;
}
ret = register_key_type(&key_type_rxrpc_s);
if (ret < 0) {
- printk(KERN_CRIT "RxRPC: Cannot register server key type\n");
+ printk(KERN_CRIT "RxRPC: Cannot register server key type\n");
goto error_key_type_s;
}
#ifdef CONFIG_PROC_FS
- proc_net_fops_create("rxrpc_calls", 0, &rxrpc_call_seq_fops);
- proc_net_fops_create("rxrpc_conns", 0, &rxrpc_connection_seq_fops);
+ proc_net_fops_create(&init_net, "rxrpc_calls", 0, &rxrpc_call_seq_fops);
+ proc_net_fops_create(&init_net, "rxrpc_conns", 0, &rxrpc_connection_seq_fops);
#endif
return 0;
error_sock:
proto_unregister(&rxrpc_proto);
error_proto:
+ destroy_workqueue(rxrpc_workqueue);
+error_work_queue:
kmem_cache_destroy(rxrpc_call_jar);
error_call_jar:
return ret;
ASSERTCMP(atomic_read(&rxrpc_n_skbs), ==, 0);
_debug("flush scheduled work");
- flush_scheduled_work();
- proc_net_remove("rxrpc_conns");
- proc_net_remove("rxrpc_calls");
+ flush_workqueue(rxrpc_workqueue);
+ proc_net_remove(&init_net, "rxrpc_conns");
+ proc_net_remove(&init_net, "rxrpc_calls");
+ destroy_workqueue(rxrpc_workqueue);
kmem_cache_destroy(rxrpc_call_jar);
_leave("");
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff