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Diffstat (limited to 'net/mptcp')
-rw-r--r--net/mptcp/protocol.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 8c1d1a595701..49b815023986 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -193,7 +193,6 @@ static void mptcp_check_data_fin_ack(struct sock *sk)
sk->sk_state_change(sk);
break;
case TCP_CLOSING:
- fallthrough;
case TCP_LAST_ACK:
inet_sk_state_store(sk, TCP_CLOSE);
sk->sk_state_change(sk);
@@ -725,8 +724,10 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk,
if (!psize)
return -EINVAL;
- if (!sk_wmem_schedule(sk, psize + dfrag->overhead))
+ if (!sk_wmem_schedule(sk, psize + dfrag->overhead)) {
+ iov_iter_revert(&msg->msg_iter, psize);
return -ENOMEM;
+ }
} else {
offset = dfrag->offset;
psize = min_t(size_t, dfrag->data_len, avail_size);
@@ -737,8 +738,11 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk,
*/
ret = do_tcp_sendpages(ssk, page, offset, psize,
msg->msg_flags | MSG_SENDPAGE_NOTLAST | MSG_DONTWAIT);
- if (ret <= 0)
+ if (ret <= 0) {
+ if (!retransmission)
+ iov_iter_revert(&msg->msg_iter, psize);
return ret;
+ }
frag_truesize += ret;
if (!retransmission) {
@@ -1388,7 +1392,9 @@ static void mptcp_worker(struct work_struct *work)
struct mptcp_data_frag *dfrag;
u64 orig_write_seq;
size_t copied = 0;
- struct msghdr msg;
+ struct msghdr msg = {
+ .msg_flags = MSG_DONTWAIT,
+ };
long timeo = 0;
lock_sock(sk);
@@ -1421,7 +1427,6 @@ static void mptcp_worker(struct work_struct *work)
lock_sock(ssk);
- msg.msg_flags = MSG_DONTWAIT;
orig_len = dfrag->data_len;
orig_offset = dfrag->offset;
orig_write_seq = dfrag->data_seq;
@@ -1535,7 +1540,7 @@ static void mptcp_subflow_shutdown(struct sock *sk, struct sock *ssk, int how)
case TCP_LISTEN:
if (!(how & RCV_SHUTDOWN))
break;
- /* fall through */
+ fallthrough;
case TCP_SYN_SENT:
tcp_disconnect(ssk, O_NONBLOCK);
break;