From 2da43c4a1b517d02e71d9611a2242273e7d399ba Mon Sep 17 00:00:00 2001 From: Sowmini Varadhan Date: Thu, 30 Jun 2016 16:11:15 -0700 Subject: [PATCH] RDS: TCP: make receive path use the rds_conn_path The ->sk_user_data contains a pointer to the rds_conn_path for the socket. Use this consistently in the rds_tcp_data_ready callbacks to get the rds_conn_path for rds_recv_incoming. Acked-by: Santosh Shilimkar Signed-off-by: Sowmini Varadhan Signed-off-by: David S. Miller --- net/rds/ib.c | 2 +- net/rds/ib.h | 2 +- net/rds/ib_recv.c | 3 ++- net/rds/loop.c | 4 ++-- net/rds/rds.h | 2 +- net/rds/tcp.c | 2 +- net/rds/tcp.h | 2 +- net/rds/tcp_recv.c | 29 ++++++++++++++++------------- net/rds/threads.c | 2 +- 9 files changed, 26 insertions(+), 22 deletions(-) diff --git a/net/rds/ib.c b/net/rds/ib.c index 1b29ec9445fc..e6ba85671004 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -385,7 +385,7 @@ struct rds_transport rds_ib_transport = { .xmit = rds_ib_xmit, .xmit_rdma = rds_ib_xmit_rdma, .xmit_atomic = rds_ib_xmit_atomic, - .recv = rds_ib_recv, + .recv_path = rds_ib_recv_path, .conn_alloc = rds_ib_conn_alloc, .conn_free = rds_ib_conn_free, .conn_connect = rds_ib_conn_connect, diff --git a/net/rds/ib.h b/net/rds/ib.h index 2051f4bd7a66..579de7e6369c 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -354,7 +354,7 @@ void rds_ib_mr_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc); /* ib_recv.c */ int rds_ib_recv_init(void); void rds_ib_recv_exit(void); -int rds_ib_recv(struct rds_connection *conn); +int rds_ib_recv_path(struct rds_conn_path *conn); int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic); void rds_ib_recv_free_caches(struct rds_ib_connection *ic); void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp); diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index 4ea8cb17cc7a..606a11f681d2 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -1009,8 +1009,9 @@ void rds_ib_recv_cqe_handler(struct rds_ib_connection *ic, rds_ib_recv_refill(conn, 0, GFP_NOWAIT); } -int rds_ib_recv(struct rds_connection *conn) +int rds_ib_recv_path(struct rds_conn_path *cp) { + struct rds_connection *conn = cp->cp_conn; struct rds_ib_connection *ic = conn->c_transport_data; int ret = 0; diff --git a/net/rds/loop.c b/net/rds/loop.c index 318c21d7d8d4..20284a4dca91 100644 --- a/net/rds/loop.c +++ b/net/rds/loop.c @@ -102,7 +102,7 @@ static void rds_loop_inc_free(struct rds_incoming *inc) } /* we need to at least give the thread something to succeed */ -static int rds_loop_recv(struct rds_connection *conn) +static int rds_loop_recv_path(struct rds_conn_path *cp) { return 0; } @@ -185,7 +185,7 @@ void rds_loop_exit(void) */ struct rds_transport rds_loop_transport = { .xmit = rds_loop_xmit, - .recv = rds_loop_recv, + .recv_path = rds_loop_recv_path, .conn_alloc = rds_loop_conn_alloc, .conn_free = rds_loop_conn_free, .conn_connect = rds_loop_conn_connect, diff --git a/net/rds/rds.h b/net/rds/rds.h index 5bbad08262f5..0faca3011370 100644 --- a/net/rds/rds.h +++ b/net/rds/rds.h @@ -462,7 +462,7 @@ struct rds_transport { unsigned int hdr_off, unsigned int sg, unsigned int off); int (*xmit_rdma)(struct rds_connection *conn, struct rm_rdma_op *op); int (*xmit_atomic)(struct rds_connection *conn, struct rm_atomic_op *op); - int (*recv)(struct rds_connection *conn); + int (*recv_path)(struct rds_conn_path *cp); int (*inc_copy_to_user)(struct rds_incoming *inc, struct iov_iter *to); void (*inc_free)(struct rds_incoming *inc); diff --git a/net/rds/tcp.c b/net/rds/tcp.c index 5658f3e9f601..7bc136c66dbe 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -359,7 +359,7 @@ struct rds_transport rds_tcp_transport = { .xmit_path_prepare = rds_tcp_xmit_path_prepare, .xmit_path_complete = rds_tcp_xmit_path_complete, .xmit = rds_tcp_xmit, - .recv = rds_tcp_recv, + .recv_path = rds_tcp_recv_path, .conn_alloc = rds_tcp_conn_alloc, .conn_free = rds_tcp_conn_free, .conn_connect = rds_tcp_conn_connect, diff --git a/net/rds/tcp.h b/net/rds/tcp.h index 151b09d1af43..5a5f91abe1de 100644 --- a/net/rds/tcp.h +++ b/net/rds/tcp.h @@ -75,7 +75,7 @@ int rds_tcp_keepalive(struct socket *sock); int rds_tcp_recv_init(void); void rds_tcp_recv_exit(void); void rds_tcp_data_ready(struct sock *sk); -int rds_tcp_recv(struct rds_connection *conn); +int rds_tcp_recv_path(struct rds_conn_path *cp); void rds_tcp_inc_free(struct rds_incoming *inc); int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c index aa7a79a00ef7..ad4892e97f91 100644 --- a/net/rds/tcp_recv.c +++ b/net/rds/tcp_recv.c @@ -34,7 +34,6 @@ #include #include -#include "rds_single_path.h" #include "rds.h" #include "tcp.h" @@ -148,7 +147,7 @@ static void rds_tcp_cong_recv(struct rds_connection *conn, } struct rds_tcp_desc_arg { - struct rds_connection *conn; + struct rds_conn_path *conn_path; gfp_t gfp; }; @@ -156,8 +155,8 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, unsigned int offset, size_t len) { struct rds_tcp_desc_arg *arg = desc->arg.data; - struct rds_connection *conn = arg->conn; - struct rds_tcp_connection *tc = conn->c_transport_data; + struct rds_conn_path *cp = arg->conn_path; + struct rds_tcp_connection *tc = cp->cp_transport_data; struct rds_tcp_incoming *tinc = tc->t_tinc; struct sk_buff *clone; size_t left = len, to_copy; @@ -179,7 +178,8 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, } tc->t_tinc = tinc; rdsdebug("alloced tinc %p\n", tinc); - rds_inc_init(&tinc->ti_inc, conn, conn->c_faddr); + rds_inc_path_init(&tinc->ti_inc, cp, + cp->cp_conn->c_faddr); /* * XXX * we might be able to use the __ variants when * we've already serialized at a higher level. @@ -229,6 +229,8 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, } if (tc->t_tinc_hdr_rem == 0 && tc->t_tinc_data_rem == 0) { + struct rds_connection *conn = cp->cp_conn; + if (tinc->ti_inc.i_hdr.h_flags == RDS_FLAG_CONG_BITMAP) rds_tcp_cong_recv(conn, tinc); else @@ -251,15 +253,15 @@ out: } /* the caller has to hold the sock lock */ -static int rds_tcp_read_sock(struct rds_connection *conn, gfp_t gfp) +static int rds_tcp_read_sock(struct rds_conn_path *cp, gfp_t gfp) { - struct rds_tcp_connection *tc = conn->c_transport_data; + struct rds_tcp_connection *tc = cp->cp_transport_data; struct socket *sock = tc->t_sock; read_descriptor_t desc; struct rds_tcp_desc_arg arg; /* It's like glib in the kernel! */ - arg.conn = conn; + arg.conn_path = cp; arg.gfp = gfp; desc.arg.data = &arg; desc.error = 0; @@ -279,16 +281,17 @@ static int rds_tcp_read_sock(struct rds_connection *conn, gfp_t gfp) * if we fail to allocate we're in trouble.. blindly wait some time before * trying again to see if the VM can free up something for us. */ -int rds_tcp_recv(struct rds_connection *conn) +int rds_tcp_recv_path(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; int ret = 0; - rdsdebug("recv worker conn %p tc %p sock %p\n", conn, tc, sock); + rdsdebug("recv worker path [%d] tc %p sock %p\n", + cp->cp_index, tc, sock); lock_sock(sock->sk); - ret = rds_tcp_read_sock(conn, GFP_KERNEL); + ret = rds_tcp_read_sock(cp, GFP_KERNEL); release_sock(sock->sk); return ret; @@ -313,7 +316,7 @@ void rds_tcp_data_ready(struct sock *sk) ready = tc->t_orig_data_ready; rds_tcp_stats_inc(s_tcp_data_ready_calls); - if (rds_tcp_read_sock(cp->cp_conn, GFP_ATOMIC) == -ENOMEM) + if (rds_tcp_read_sock(cp, GFP_ATOMIC) == -ENOMEM) queue_delayed_work(rds_wq, &cp->cp_recv_w, 0); out: read_unlock_bh(&sk->sk_callback_lock); diff --git a/net/rds/threads.c b/net/rds/threads.c index 9fbe95bb14a9..f717b69e03f9 100644 --- a/net/rds/threads.c +++ b/net/rds/threads.c @@ -203,7 +203,7 @@ void rds_recv_worker(struct work_struct *work) int ret; if (rds_conn_path_state(cp) == RDS_CONN_UP) { - ret = cp->cp_conn->c_trans->recv(cp->cp_conn); + ret = cp->cp_conn->c_trans->recv_path(cp); rdsdebug("conn %p ret %d\n", cp->cp_conn, ret); switch (ret) { case -EAGAIN: -- 2.20.1