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-rw-r--r--net/rxrpc/call_accept.c7
-rw-r--r--net/rxrpc/call_object.c27
-rw-r--r--net/rxrpc/conn_event.c6
-rw-r--r--net/rxrpc/conn_object.c8
-rw-r--r--net/rxrpc/input.c7
-rw-r--r--net/rxrpc/key.c18
-rw-r--r--net/rxrpc/local_object.c23
-rw-r--r--net/rxrpc/recvmsg.c4
-rw-r--r--net/rxrpc/sendmsg.c5
9 files changed, 69 insertions, 36 deletions
diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c
index 2dd13f5c47c8..61425179780c 100644
--- a/net/rxrpc/call_accept.c
+++ b/net/rxrpc/call_accept.c
@@ -26,6 +26,11 @@
#include <net/ip.h>
#include "ar-internal.h"
+static void rxrpc_dummy_notify(struct sock *sk, struct rxrpc_call *call,
+ unsigned long user_call_ID)
+{
+}
+
/*
* Preallocate a single service call, connection and peer and, if possible,
* give them a user ID and attach the user's side of the ID to them.
@@ -227,6 +232,8 @@ void rxrpc_discard_prealloc(struct rxrpc_sock *rx)
if (rx->discard_new_call) {
_debug("discard %lx", call->user_call_ID);
rx->discard_new_call(call, call->user_call_ID);
+ if (call->notify_rx)
+ call->notify_rx = rxrpc_dummy_notify;
rxrpc_put_call(call, rxrpc_call_put_kernel);
}
rxrpc_call_completed(call);
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 7021725fa38a..1c98a026b41a 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -275,7 +275,7 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
*/
ret = rxrpc_connect_call(call, cp, srx, gfp);
if (ret < 0)
- goto error;
+ goto error_attached_to_socket;
trace_rxrpc_call(call, rxrpc_call_connected, atomic_read(&call->usage),
here, NULL);
@@ -295,18 +295,29 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
error_dup_user_ID:
write_unlock(&rx->call_lock);
release_sock(&rx->sk);
- ret = -EEXIST;
-
-error:
__rxrpc_set_call_completion(call, RXRPC_CALL_LOCAL_ERROR,
- RX_CALL_DEAD, ret);
+ RX_CALL_DEAD, -EEXIST);
trace_rxrpc_call(call, rxrpc_call_error, atomic_read(&call->usage),
- here, ERR_PTR(ret));
+ here, ERR_PTR(-EEXIST));
rxrpc_release_call(rx, call);
mutex_unlock(&call->user_mutex);
rxrpc_put_call(call, rxrpc_call_put);
- _leave(" = %d", ret);
- return ERR_PTR(ret);
+ _leave(" = -EEXIST");
+ return ERR_PTR(-EEXIST);
+
+ /* We got an error, but the call is attached to the socket and is in
+ * need of release. However, we might now race with recvmsg() when
+ * completing the call queues it. Return 0 from sys_sendmsg() and
+ * leave the error to recvmsg() to deal with.
+ */
+error_attached_to_socket:
+ trace_rxrpc_call(call, rxrpc_call_error, atomic_read(&call->usage),
+ here, ERR_PTR(ret));
+ set_bit(RXRPC_CALL_DISCONNECTED, &call->flags);
+ __rxrpc_set_call_completion(call, RXRPC_CALL_LOCAL_ERROR,
+ RX_CALL_DEAD, ret);
+ _leave(" = c=%08x [err]", call->debug_id);
+ return call;
}
/*
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index 75ec1ad595b7..2432c118397f 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -316,18 +316,18 @@ static int rxrpc_process_event(struct rxrpc_connection *conn,
return ret;
spin_lock(&conn->channel_lock);
- spin_lock(&conn->state_lock);
+ spin_lock_bh(&conn->state_lock);
if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) {
conn->state = RXRPC_CONN_SERVICE;
- spin_unlock(&conn->state_lock);
+ spin_unlock_bh(&conn->state_lock);
for (loop = 0; loop < RXRPC_MAXCALLS; loop++)
rxrpc_call_is_secure(
rcu_dereference_protected(
conn->channels[loop].call,
lockdep_is_held(&conn->channel_lock)));
} else {
- spin_unlock(&conn->state_lock);
+ spin_unlock_bh(&conn->state_lock);
}
spin_unlock(&conn->channel_lock);
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index af0232820597..0e5087b9e07c 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -196,9 +196,11 @@ void rxrpc_disconnect_call(struct rxrpc_call *call)
call->peer->cong_cwnd = call->cong_cwnd;
- spin_lock_bh(&conn->params.peer->lock);
- hlist_del_init(&call->error_link);
- spin_unlock_bh(&conn->params.peer->lock);
+ if (!hlist_unhashed(&call->error_link)) {
+ spin_lock_bh(&conn->params.peer->lock);
+ hlist_del_init(&call->error_link);
+ spin_unlock_bh(&conn->params.peer->lock);
+ }
if (rxrpc_is_client_call(call))
return rxrpc_disconnect_client_call(call);
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 18ce6f97462b..98285b117a7c 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -664,13 +664,12 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb,
ntohl(ackinfo->rxMTU), ntohl(ackinfo->maxMTU),
rwind, ntohl(ackinfo->jumbo_max));
+ if (rwind > RXRPC_RXTX_BUFF_SIZE - 1)
+ rwind = RXRPC_RXTX_BUFF_SIZE - 1;
if (call->tx_winsize != rwind) {
- if (rwind > RXRPC_RXTX_BUFF_SIZE - 1)
- rwind = RXRPC_RXTX_BUFF_SIZE - 1;
if (rwind > call->tx_winsize)
wake = true;
- trace_rxrpc_rx_rwind_change(call, sp->hdr.serial,
- ntohl(ackinfo->rwind), wake);
+ trace_rxrpc_rx_rwind_change(call, sp->hdr.serial, rwind, wake);
call->tx_winsize = rwind;
}
diff --git a/net/rxrpc/key.c b/net/rxrpc/key.c
index ad9d1b21cb0b..2fe2add62a8e 100644
--- a/net/rxrpc/key.c
+++ b/net/rxrpc/key.c
@@ -905,7 +905,7 @@ int rxrpc_request_key(struct rxrpc_sock *rx, char __user *optval, int optlen)
_enter("");
- if (optlen <= 0 || optlen > PAGE_SIZE - 1)
+ if (optlen <= 0 || optlen > PAGE_SIZE - 1 || rx->securities)
return -EINVAL;
description = memdup_user_nul(optval, optlen);
@@ -1075,7 +1075,7 @@ static long rxrpc_read(const struct key *key,
switch (token->security_index) {
case RXRPC_SECURITY_RXKAD:
- toksize += 9 * 4; /* viceid, kvno, key*2 + len, begin,
+ toksize += 8 * 4; /* viceid, kvno, key*2, begin,
* end, primary, tktlen */
toksize += RND(token->kad->ticket_len);
break;
@@ -1110,7 +1110,8 @@ static long rxrpc_read(const struct key *key,
break;
default: /* we have a ticket we can't encode */
- BUG();
+ pr_err("Unsupported key token type (%u)\n",
+ token->security_index);
continue;
}
@@ -1141,6 +1142,14 @@ static long rxrpc_read(const struct key *key,
memcpy((u8 *)xdr + _l, &zero, 4 - (_l & 3)); \
xdr += (_l + 3) >> 2; \
} while(0)
+#define ENCODE_BYTES(l, s) \
+ do { \
+ u32 _l = (l); \
+ memcpy(xdr, (s), _l); \
+ if (_l & 3) \
+ memcpy((u8 *)xdr + _l, &zero, 4 - (_l & 3)); \
+ xdr += (_l + 3) >> 2; \
+ } while(0)
#define ENCODE64(x) \
do { \
__be64 y = cpu_to_be64(x); \
@@ -1168,7 +1177,7 @@ static long rxrpc_read(const struct key *key,
case RXRPC_SECURITY_RXKAD:
ENCODE(token->kad->vice_id);
ENCODE(token->kad->kvno);
- ENCODE_DATA(8, token->kad->session_key);
+ ENCODE_BYTES(8, token->kad->session_key);
ENCODE(token->kad->start);
ENCODE(token->kad->expiry);
ENCODE(token->kad->primary_flag);
@@ -1218,7 +1227,6 @@ static long rxrpc_read(const struct key *key,
break;
default:
- BUG();
break;
}
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 2af42c7d5b82..383292adcac6 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -134,10 +134,10 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
}
switch (local->srx.transport.family) {
- case AF_INET:
- /* we want to receive ICMP errors */
+ case AF_INET6:
+ /* we want to receive ICMPv6 errors */
opt = 1;
- ret = kernel_setsockopt(local->socket, SOL_IP, IP_RECVERR,
+ ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_RECVERR,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
@@ -145,19 +145,22 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
}
/* we want to set the don't fragment bit */
- opt = IP_PMTUDISC_DO;
- ret = kernel_setsockopt(local->socket, SOL_IP, IP_MTU_DISCOVER,
+ opt = IPV6_PMTUDISC_DO;
+ ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_MTU_DISCOVER,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
goto error;
}
- break;
- case AF_INET6:
+ /* Fall through and set IPv4 options too otherwise we don't get
+ * errors from IPv4 packets sent through the IPv6 socket.
+ */
+
+ case AF_INET:
/* we want to receive ICMP errors */
opt = 1;
- ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_RECVERR,
+ ret = kernel_setsockopt(local->socket, SOL_IP, IP_RECVERR,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
@@ -165,8 +168,8 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
}
/* we want to set the don't fragment bit */
- opt = IPV6_PMTUDISC_DO;
- ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_MTU_DISCOVER,
+ opt = IP_PMTUDISC_DO;
+ ret = kernel_setsockopt(local->socket, SOL_IP, IP_MTU_DISCOVER,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c
index b74cde2fd214..1cdd8b380d47 100644
--- a/net/rxrpc/recvmsg.c
+++ b/net/rxrpc/recvmsg.c
@@ -445,7 +445,7 @@ try_again:
list_empty(&rx->recvmsg_q) &&
rx->sk.sk_state != RXRPC_SERVER_LISTENING) {
release_sock(&rx->sk);
- return -ENODATA;
+ return -EAGAIN;
}
if (list_empty(&rx->recvmsg_q)) {
@@ -522,7 +522,7 @@ try_again:
goto error_unlock_call;
}
- if (msg->msg_name) {
+ if (msg->msg_name && call->peer) {
struct sockaddr_rxrpc *srx = msg->msg_name;
size_t len = sizeof(call->peer->srx);
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index a980b49d7a4f..8f9a2a7eeb7c 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -222,7 +222,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
/* this should be in poll */
sk_clear_bit(SOCKWQ_ASYNC_NOSPACE, sk);
- if (sk->sk_err || (sk->sk_shutdown & SEND_SHUTDOWN))
+ if (sk->sk_shutdown & SEND_SHUTDOWN)
return -EPIPE;
more = msg->msg_flags & MSG_MORE;
@@ -579,6 +579,9 @@ int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
if (IS_ERR(call))
return PTR_ERR(call);
/* ... and we have the call lock. */
+ ret = 0;
+ if (READ_ONCE(call->state) == RXRPC_CALL_COMPLETE)
+ goto out_put_unlock;
} else {
switch (READ_ONCE(call->state)) {
case RXRPC_CALL_UNINITIALISED:
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-27 06:54:57 +0000