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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2016-06-13 09:44:27 -0700
committerDavid S. Miller <davem@davemloft.net>2016-06-14 23:50:41 -0700
commit7e8f4413d7861efcb332ebce8d9b000a17eaa0e5 (patch)
treee5963784f2675ac19d3ca72dd1f47c7843897c05 /net/rds/rds.h
parent0cb43965d42a21a7af41f88f1021b478dc102425 (diff)
downloadlinux-7e8f4413d7861efcb332ebce8d9b000a17eaa0e5.tar.bz2
RDS: add t_mp_capable bit to be set by MP capable transports
The t_mp_capable bit will be used in the core rds module to support multipathing logic when the transport supports it. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/rds.h')
-rw-r--r--net/rds/rds.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/rds/rds.h b/net/rds/rds.h
index ca31a07f70f5..28f001cbc893 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -446,7 +446,8 @@ struct rds_transport {
char t_name[TRANSNAMSIZ];
struct list_head t_item;
struct module *t_owner;
- unsigned int t_prefer_loopback:1;
+ unsigned int t_prefer_loopback:1,
+ t_mp_capable:1;
unsigned int t_type;
int (*laddr_check)(struct net *net, __be32 addr);
@@ -673,6 +674,7 @@ rds_conn_path_transition(struct rds_conn_path *cp, int old, int new)
static inline int
rds_conn_transition(struct rds_connection *conn, int old, int new)
{
+ WARN_ON(conn->c_trans->t_mp_capable);
return rds_conn_path_transition(&conn->c_path[0], old, new);
}
@@ -685,6 +687,7 @@ rds_conn_path_state(struct rds_conn_path *cp)
static inline int
rds_conn_state(struct rds_connection *conn)
{
+ WARN_ON(conn->c_trans->t_mp_capable);
return rds_conn_path_state(&conn->c_path[0]);
}
@@ -697,6 +700,7 @@ rds_conn_path_up(struct rds_conn_path *cp)
static inline int
rds_conn_up(struct rds_connection *conn)
{
+ WARN_ON(conn->c_trans->t_mp_capable);
return rds_conn_path_up(&conn->c_path[0]);
}
@@ -709,6 +713,7 @@ rds_conn_path_connecting(struct rds_conn_path *cp)
static inline int
rds_conn_connecting(struct rds_connection *conn)
{
+ WARN_ON(conn->c_trans->t_mp_capable);
return rds_conn_path_connecting(&conn->c_path[0]);
}