[rds-devel] [PATCH net 2/3] RDS: TCP: Retransmit half-sent datagrams when switching sockets in rds_tcp_reset_callbacks
Sowmini Varadhan
sowmini.varadhan at oracle.com
Sat Jun 4 13:59:59 PDT 2016
When we switch a connection's sockets in rds_tcp_rest_callbacks,
any partially sent datagram must be retransmitted on the new
socket so that the receiver can correctly reassmble the RDS
datagram. Use rds_send_reset() which is designed for this purpose.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan at oracle.com>
---
net/rds/send.c | 1 +
net/rds/tcp.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/rds/send.c b/net/rds/send.c
index c9cdb35..b1962f8 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -99,6 +99,7 @@ void rds_send_reset(struct rds_connection *conn)
list_splice_init(&conn->c_retrans, &conn->c_send_queue);
spin_unlock_irqrestore(&conn->c_lock, flags);
}
+EXPORT_SYMBOL_GPL(rds_send_reset);
static int acquire_in_xmit(struct rds_connection *conn)
{
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 8faa0b1..7ab1b41 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -173,6 +173,7 @@ void rds_tcp_reset_callbacks(struct socket *sock,
release_sock(osock->sk);
sock_release(osock);
newsock:
+ rds_send_reset(conn);
lock_sock(sock->sk);
write_lock_bh(&sock->sk->sk_callback_lock);
tc->t_sock = sock;
--
1.7.1
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