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Date: Thu, 30 Jun 2016 16:11:16 -0700
From: Sowmini Varadhan <sowmini.varadhan@...cle.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, rds-devel@....oracle.com,
sowmini.varadhan@...cle.com, santosh.shilimkar@...cle.com
Subject: [PATCH net-next 7/9] RDS: TCP: Hooks to set up a single connection path
This patch adds ->conn_path_connect callbacks in the rds_transport
that are used to set up a single connection path.
Acked-by: Santosh Shilimkar <santosh.shilimkar@...cle.com>
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@...cle.com>
---
net/rds/ib.c | 2 +-
net/rds/ib.h | 2 +-
net/rds/ib_cm.c | 3 ++-
net/rds/loop.c | 6 +++---
net/rds/rds.h | 2 +-
net/rds/tcp.c | 2 +-
net/rds/tcp.h | 4 ++--
net/rds/tcp_connect.c | 11 ++++++-----
net/rds/threads.c | 5 +++--
9 files changed, 20 insertions(+), 17 deletions(-)
diff --git a/net/rds/ib.c b/net/rds/ib.c
index e6ba856..7eaf887 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -388,7 +388,7 @@ struct rds_transport rds_ib_transport = {
.recv_path = rds_ib_recv_path,
.conn_alloc = rds_ib_conn_alloc,
.conn_free = rds_ib_conn_free,
- .conn_connect = rds_ib_conn_connect,
+ .conn_path_connect = rds_ib_conn_path_connect,
.conn_path_shutdown = rds_ib_conn_path_shutdown,
.inc_copy_to_user = rds_ib_inc_copy_to_user,
.inc_free = rds_ib_inc_free,
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 579de7e..046f750 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -328,7 +328,7 @@ extern struct list_head ib_nodev_conns;
/* ib_cm.c */
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);
+int rds_ib_conn_path_connect(struct rds_conn_path *cp);
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);
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index e34ea0b..5b2ab95 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -685,8 +685,9 @@ int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id)
return ret;
}
-int rds_ib_conn_connect(struct rds_connection *conn)
+int rds_ib_conn_path_connect(struct rds_conn_path *cp)
{
+ struct rds_connection *conn = cp->cp_conn;
struct rds_ib_connection *ic = conn->c_transport_data;
struct sockaddr_in src, dest;
int ret;
diff --git a/net/rds/loop.c b/net/rds/loop.c
index 20284a4..f2bf78d 100644
--- a/net/rds/loop.c
+++ b/net/rds/loop.c
@@ -150,9 +150,9 @@ static void rds_loop_conn_free(void *arg)
kfree(lc);
}
-static int rds_loop_conn_connect(struct rds_connection *conn)
+static int rds_loop_conn_path_connect(struct rds_conn_path *cp)
{
- rds_connect_complete(conn);
+ rds_connect_complete(cp->cp_conn);
return 0;
}
@@ -188,7 +188,7 @@ struct rds_transport rds_loop_transport = {
.recv_path = rds_loop_recv_path,
.conn_alloc = rds_loop_conn_alloc,
.conn_free = rds_loop_conn_free,
- .conn_connect = rds_loop_conn_connect,
+ .conn_path_connect = rds_loop_conn_path_connect,
.conn_path_shutdown = rds_loop_conn_path_shutdown,
.inc_copy_to_user = rds_message_inc_copy_to_user,
.inc_free = rds_loop_inc_free,
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 0faca30..6ef07bd 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -454,7 +454,7 @@ struct rds_transport {
int (*laddr_check)(struct net *net, __be32 addr);
int (*conn_alloc)(struct rds_connection *conn, gfp_t gfp);
void (*conn_free)(void *data);
- int (*conn_connect)(struct rds_connection *conn);
+ int (*conn_path_connect)(struct rds_conn_path *cp);
void (*conn_path_shutdown)(struct rds_conn_path *conn);
void (*xmit_path_prepare)(struct rds_conn_path *cp);
void (*xmit_path_complete)(struct rds_conn_path *cp);
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 7bc136c..d278432 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -362,7 +362,7 @@ struct rds_transport rds_tcp_transport = {
.recv_path = rds_tcp_recv_path,
.conn_alloc = rds_tcp_conn_alloc,
.conn_free = rds_tcp_conn_free,
- .conn_connect = rds_tcp_conn_connect,
+ .conn_path_connect = rds_tcp_conn_path_connect,
.conn_path_shutdown = rds_tcp_conn_path_shutdown,
.inc_copy_to_user = rds_tcp_inc_copy_to_user,
.inc_free = rds_tcp_inc_free,
diff --git a/net/rds/tcp.h b/net/rds/tcp.h
index 5a5f91a..1c3160f 100644
--- a/net/rds/tcp.h
+++ b/net/rds/tcp.h
@@ -13,7 +13,7 @@ struct rds_tcp_connection {
struct list_head t_tcp_node;
struct rds_conn_path *t_cpath;
/* t_conn_path_lock synchronizes the connection establishment between
- * rds_tcp_accept_one and rds_tcp_conn_connect
+ * rds_tcp_accept_one and rds_tcp_conn_path_connect
*/
struct mutex t_conn_path_lock;
struct socket *t_sock;
@@ -60,7 +60,7 @@ extern struct rds_transport rds_tcp_transport;
void rds_tcp_accept_work(struct sock *sk);
/* tcp_connect.c */
-int rds_tcp_conn_connect(struct rds_connection *conn);
+int rds_tcp_conn_path_connect(struct rds_conn_path *cp);
void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn);
void rds_tcp_state_change(struct sock *sk);
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c
index 7eddce5..c916715 100644
--- a/net/rds/tcp_connect.c
+++ b/net/rds/tcp_connect.c
@@ -74,17 +74,17 @@ void rds_tcp_state_change(struct sock *sk)
state_change(sk);
}
-int rds_tcp_conn_connect(struct rds_connection *conn)
+int rds_tcp_conn_path_connect(struct rds_conn_path *cp)
{
struct socket *sock = NULL;
struct sockaddr_in src, dest;
int ret;
- struct rds_tcp_connection *tc = conn->c_transport_data;
- struct rds_conn_path *cp = &conn->c_path[0];
+ struct rds_connection *conn = cp->cp_conn;
+ struct rds_tcp_connection *tc = cp->cp_transport_data;
mutex_lock(&tc->t_conn_path_lock);
- if (rds_conn_up(conn)) {
+ if (rds_conn_path_up(cp)) {
mutex_unlock(&tc->t_conn_path_lock);
return 0;
}
@@ -118,6 +118,7 @@ int rds_tcp_conn_connect(struct rds_connection *conn)
ret = sock->ops->connect(sock, (struct sockaddr *)&dest, sizeof(dest),
O_NONBLOCK);
+ cp->cp_outgoing = 1;
rdsdebug("connect to address %pI4 returned %d\n", &conn->c_faddr, ret);
if (ret == -EINPROGRESS)
ret = 0;
@@ -125,7 +126,7 @@ int rds_tcp_conn_connect(struct rds_connection *conn)
rds_tcp_keepalive(sock);
sock = NULL;
} else {
- rds_tcp_restore_callbacks(sock, conn->c_transport_data);
+ rds_tcp_restore_callbacks(sock, cp->cp_transport_data);
}
out:
diff --git a/net/rds/threads.c b/net/rds/threads.c
index f717b69..e8f0941 100644
--- a/net/rds/threads.c
+++ b/net/rds/threads.c
@@ -152,8 +152,9 @@ void rds_connect_worker(struct work_struct *work)
int ret;
clear_bit(RDS_RECONNECT_PENDING, &cp->cp_flags);
- if (rds_conn_path_transition(cp, RDS_CONN_DOWN, RDS_CONN_CONNECTING)) {
- ret = conn->c_trans->conn_connect(conn);
+ ret = rds_conn_path_transition(cp, RDS_CONN_DOWN, RDS_CONN_CONNECTING);
+ if (ret) {
+ ret = conn->c_trans->conn_path_connect(cp);
rdsdebug("conn %p for %pI4 to %pI4 dispatched, ret %d\n",
conn, &conn->c_laddr, &conn->c_faddr, ret);
--
1.7.1
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