From: Sowmini Varadhan Date: Thu, 30 Jun 2016 23:11:10 +0000 (-0700) Subject: RDS: Rework path specific indirections X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=226f7a7d97e37220a442f52eb85ebff2cd6fc0d2;p=linux-beck.git RDS: Rework path specific indirections Refactor code to avoid separate indirections for single-path and multipath transports. All transports (both single and mp-capable) will get a pointer to the rds_conn_path, and can trivially derive the rds_connection from the ->cp_conn. Acked-by: Santosh Shilimkar Signed-off-by: Sowmini Varadhan Signed-off-by: David S. Miller --- diff --git a/net/rds/connection.c b/net/rds/connection.c index a4b07c899d89..17c2f2591ac4 100644 --- a/net/rds/connection.c +++ b/net/rds/connection.c @@ -326,10 +326,7 @@ void rds_conn_shutdown(struct rds_conn_path *cp) wait_event(cp->cp_waitq, !test_bit(RDS_RECV_REFILL, &cp->cp_flags)); - if (!conn->c_trans->t_mp_capable) - conn->c_trans->conn_shutdown(conn); - else - conn->c_trans->conn_path_shutdown(cp); + conn->c_trans->conn_path_shutdown(cp); rds_conn_path_reset(cp); if (!rds_conn_path_transition(cp, RDS_CONN_DISCONNECTING, diff --git a/net/rds/ib.c b/net/rds/ib.c index 44946a681a8c..1b29ec9445fc 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -381,7 +381,7 @@ void rds_ib_exit(void) struct rds_transport rds_ib_transport = { .laddr_check = rds_ib_laddr_check, - .xmit_complete = rds_ib_xmit_complete, + .xmit_path_complete = rds_ib_xmit_path_complete, .xmit = rds_ib_xmit, .xmit_rdma = rds_ib_xmit_rdma, .xmit_atomic = rds_ib_xmit_atomic, @@ -389,7 +389,7 @@ struct rds_transport rds_ib_transport = { .conn_alloc = rds_ib_conn_alloc, .conn_free = rds_ib_conn_free, .conn_connect = rds_ib_conn_connect, - .conn_shutdown = rds_ib_conn_shutdown, + .conn_path_shutdown = rds_ib_conn_path_shutdown, .inc_copy_to_user = rds_ib_inc_copy_to_user, .inc_free = rds_ib_inc_free, .cm_initiate_connect = rds_ib_cm_initiate_connect, diff --git a/net/rds/ib.h b/net/rds/ib.h index 627fb79aee65..2051f4bd7a66 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -329,7 +329,7 @@ extern struct list_head ib_nodev_conns; int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp); void rds_ib_conn_free(void *arg); int rds_ib_conn_connect(struct rds_connection *conn); -void rds_ib_conn_shutdown(struct rds_connection *conn); +void rds_ib_conn_path_shutdown(struct rds_conn_path *cp); void rds_ib_state_change(struct sock *sk); int rds_ib_listen_init(void); void rds_ib_listen_stop(void); @@ -384,7 +384,7 @@ u32 rds_ib_ring_completed(struct rds_ib_work_ring *ring, u32 wr_id, u32 oldest); extern wait_queue_head_t rds_ib_ring_empty_wait; /* ib_send.c */ -void rds_ib_xmit_complete(struct rds_connection *conn); +void rds_ib_xmit_path_complete(struct rds_conn_path *cp); int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, unsigned int hdr_off, unsigned int sg, unsigned int off); void rds_ib_send_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc); diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index e48bb1ba3dfc..e34ea0b5c16a 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -731,8 +731,9 @@ out: * so that it can be called at any point during startup. In fact it * can be called multiple times for a given connection. */ -void rds_ib_conn_shutdown(struct rds_connection *conn) +void rds_ib_conn_path_shutdown(struct rds_conn_path *cp) { + struct rds_connection *conn = cp->cp_conn; struct rds_ib_connection *ic = conn->c_transport_data; int err = 0; diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index 6e4110aa5135..84d90c97332f 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -980,8 +980,9 @@ out: return ret; } -void rds_ib_xmit_complete(struct rds_connection *conn) +void rds_ib_xmit_path_complete(struct rds_conn_path *cp) { + struct rds_connection *conn = cp->cp_conn; struct rds_ib_connection *ic = conn->c_transport_data; /* We may have a pending ACK or window update we were unable diff --git a/net/rds/loop.c b/net/rds/loop.c index 15f83db78f0c..318c21d7d8d4 100644 --- a/net/rds/loop.c +++ b/net/rds/loop.c @@ -156,7 +156,7 @@ static int rds_loop_conn_connect(struct rds_connection *conn) return 0; } -static void rds_loop_conn_shutdown(struct rds_connection *conn) +static void rds_loop_conn_path_shutdown(struct rds_conn_path *cp) { } @@ -189,7 +189,7 @@ struct rds_transport rds_loop_transport = { .conn_alloc = rds_loop_conn_alloc, .conn_free = rds_loop_conn_free, .conn_connect = rds_loop_conn_connect, - .conn_shutdown = rds_loop_conn_shutdown, + .conn_path_shutdown = rds_loop_conn_path_shutdown, .inc_copy_to_user = rds_message_inc_copy_to_user, .inc_free = rds_loop_inc_free, .t_name = "loopback", diff --git a/net/rds/rds.h b/net/rds/rds.h index 2e35b738176f..5bbad08262f5 100644 --- a/net/rds/rds.h +++ b/net/rds/rds.h @@ -455,11 +455,8 @@ struct rds_transport { int (*conn_alloc)(struct rds_connection *conn, gfp_t gfp); void (*conn_free)(void *data); int (*conn_connect)(struct rds_connection *conn); - void (*conn_shutdown)(struct rds_connection *conn); void (*conn_path_shutdown)(struct rds_conn_path *conn); - void (*xmit_prepare)(struct rds_connection *conn); void (*xmit_path_prepare)(struct rds_conn_path *cp); - void (*xmit_complete)(struct rds_connection *conn); void (*xmit_path_complete)(struct rds_conn_path *cp); int (*xmit)(struct rds_connection *conn, struct rds_message *rm, unsigned int hdr_off, unsigned int sg, unsigned int off); diff --git a/net/rds/send.c b/net/rds/send.c index ee43d6b2ea8f..5a9caf1da896 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -183,12 +183,8 @@ restart: goto out; } - if (conn->c_trans->t_mp_capable) { - if (conn->c_trans->xmit_path_prepare) - conn->c_trans->xmit_path_prepare(cp); - } else if (conn->c_trans->xmit_prepare) { - conn->c_trans->xmit_prepare(conn); - } + if (conn->c_trans->xmit_path_prepare) + conn->c_trans->xmit_path_prepare(cp); /* * spin trying to push headers and data down the connection until @@ -403,12 +399,8 @@ restart: } over_batch: - if (conn->c_trans->t_mp_capable) { - if (conn->c_trans->xmit_path_complete) - conn->c_trans->xmit_path_complete(cp); - } else if (conn->c_trans->xmit_complete) { - conn->c_trans->xmit_complete(conn); - } + if (conn->c_trans->xmit_path_complete) + conn->c_trans->xmit_path_complete(cp); release_in_xmit(cp); /* Nuke any messages we decided not to retransmit. */ diff --git a/net/rds/tcp.c b/net/rds/tcp.c index 5217d49ce6d6..b139630daaa4 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -340,14 +340,14 @@ static void rds_tcp_exit(void); struct rds_transport rds_tcp_transport = { .laddr_check = rds_tcp_laddr_check, - .xmit_prepare = rds_tcp_xmit_prepare, - .xmit_complete = rds_tcp_xmit_complete, + .xmit_path_prepare = rds_tcp_xmit_path_prepare, + .xmit_path_complete = rds_tcp_xmit_path_complete, .xmit = rds_tcp_xmit, .recv = rds_tcp_recv, .conn_alloc = rds_tcp_conn_alloc, .conn_free = rds_tcp_conn_free, .conn_connect = rds_tcp_conn_connect, - .conn_shutdown = rds_tcp_conn_shutdown, + .conn_path_shutdown = rds_tcp_conn_path_shutdown, .inc_copy_to_user = rds_tcp_inc_copy_to_user, .inc_free = rds_tcp_inc_free, .stats_info_copy = rds_tcp_stats_info_copy, diff --git a/net/rds/tcp.h b/net/rds/tcp.h index 7940babf6c71..728abe22c9a3 100644 --- a/net/rds/tcp.h +++ b/net/rds/tcp.h @@ -61,7 +61,7 @@ void rds_tcp_accept_work(struct sock *sk); /* tcp_connect.c */ int rds_tcp_conn_connect(struct rds_connection *conn); -void rds_tcp_conn_shutdown(struct rds_connection *conn); +void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); void rds_tcp_state_change(struct sock *sk); /* tcp_listen.c */ @@ -80,8 +80,8 @@ void rds_tcp_inc_free(struct rds_incoming *inc); int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); /* tcp_send.c */ -void rds_tcp_xmit_prepare(struct rds_connection *conn); -void rds_tcp_xmit_complete(struct rds_connection *conn); +void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp); +void rds_tcp_xmit_path_complete(struct rds_conn_path *cp); int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, unsigned int hdr_off, unsigned int sg, unsigned int off); void rds_tcp_write_space(struct sock *sk); diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c index 96c2c4d17909..aa65c1631c4b 100644 --- a/net/rds/tcp_connect.c +++ b/net/rds/tcp_connect.c @@ -144,12 +144,13 @@ out: * callbacks to those set by TCP. Our callbacks won't execute again once we * hold the sock lock. */ -void rds_tcp_conn_shutdown(struct rds_connection *conn) +void rds_tcp_conn_path_shutdown(struct rds_conn_path *cp) { - struct rds_tcp_connection *tc = conn->c_transport_data; + struct rds_tcp_connection *tc = cp->cp_transport_data; struct socket *sock = tc->t_sock; - rdsdebug("shutting down conn %p tc %p sock %p\n", conn, tc, sock); + rdsdebug("shutting down conn %p tc %p sock %p\n", + cp->cp_conn, tc, sock); if (sock) { sock->ops->shutdown(sock, RCV_SHUTDOWN | SEND_SHUTDOWN); diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c index 710f1aae97ad..52cda947457b 100644 --- a/net/rds/tcp_send.c +++ b/net/rds/tcp_send.c @@ -49,16 +49,16 @@ static void rds_tcp_cork(struct socket *sock, int val) set_fs(oldfs); } -void rds_tcp_xmit_prepare(struct rds_connection *conn) +void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp) { - struct rds_tcp_connection *tc = conn->c_transport_data; + struct rds_tcp_connection *tc = cp->cp_transport_data; rds_tcp_cork(tc->t_sock, 1); } -void rds_tcp_xmit_complete(struct rds_connection *conn) +void rds_tcp_xmit_path_complete(struct rds_conn_path *cp) { - struct rds_tcp_connection *tc = conn->c_transport_data; + struct rds_tcp_connection *tc = cp->cp_transport_data; rds_tcp_cork(tc->t_sock, 0); }