diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 25aae8c526e..a4c06900f39 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -614,6 +614,22 @@ static int xs_udp_send_request(struct rpc_task *task) return status; } +/** + * xs_tcp_shutdown - gracefully shut down a TCP socket + * @xprt: transport + * + * Initiates a graceful shutdown of the TCP socket by calling the + * equivalent of shutdown(SHUT_WR); + */ +static void xs_tcp_shutdown(struct rpc_xprt *xprt) +{ + struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); + struct socket *sock = transport->sock; + + if (sock != NULL) + kernel_sock_shutdown(sock, SHUT_WR); +} + static inline void xs_encode_tcp_record_marker(struct xdr_buf *buf) { u32 reclen = buf->len - sizeof(rpc_fraghdr); @@ -691,7 +707,7 @@ static int xs_tcp_send_request(struct rpc_task *task) default: dprintk("RPC: sendmsg returned unrecognized error %d\n", -status); - xprt_disconnect(xprt); + xs_tcp_shutdown(xprt); break; } @@ -1637,8 +1653,7 @@ static void xs_tcp_connect_worker4(struct work_struct *work) break; default: /* get rid of existing socket, and retry */ - xs_close(xprt); - break; + xs_tcp_shutdown(xprt); } } out: @@ -1697,8 +1712,7 @@ static void xs_tcp_connect_worker6(struct work_struct *work) break; default: /* get rid of existing socket, and retry */ - xs_close(xprt); - break; + xs_tcp_shutdown(xprt); } } out: @@ -1745,6 +1759,19 @@ static void xs_connect(struct rpc_task *task) } } +static void xs_tcp_connect(struct rpc_task *task) +{ + struct rpc_xprt *xprt = task->tk_xprt; + + /* Initiate graceful shutdown of the socket if not already done */ + if (test_bit(XPRT_CONNECTED, &xprt->state)) + xs_tcp_shutdown(xprt); + /* Exit if we need to wait for socket shutdown to complete */ + if (test_bit(XPRT_CLOSING, &xprt->state)) + return; + xs_connect(task); +} + /** * xs_udp_print_stats - display UDP socket-specifc stats * @xprt: rpc_xprt struct containing statistics @@ -1815,12 +1842,12 @@ static struct rpc_xprt_ops xs_tcp_ops = { .release_xprt = xs_tcp_release_xprt, .rpcbind = rpcb_getport_async, .set_port = xs_set_port, - .connect = xs_connect, + .connect = xs_tcp_connect, .buf_alloc = rpc_malloc, .buf_free = rpc_free, .send_request = xs_tcp_send_request, .set_retrans_timeout = xprt_set_retrans_timeout_def, - .close = xs_close, + .close = xs_tcp_shutdown, .destroy = xs_destroy, .print_stats = xs_tcp_print_stats, }; |