diff options
| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2017-06-21 13:40:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-22 11:34:04 -0400 |
| commit | 69b92b5b7419846e2a0d61a097b11b17a089e046 (patch) | |
| tree | dc21d77a3eed374fb5be93efaa1c0b2ebd2d81b9 /net/rds/tcp_listen.c | |
| parent | 6d659237657c64e9e2a930865da4c777239b678e (diff) | |
rds: tcp: send handshake ping-probe from passive endpoint
The RDS handshake ping probe added by commit 5916e2c1554f
("RDS: TCP: Enable multipath RDS for TCP") is sent from rds_sendmsg()
before the first data packet is sent to a peer. If the conversation
is not bidirectional (i.e., one side is always passive and never
invokes rds_sendmsg()) and the passive side restarts its rds_tcp
module, a new HS ping probe needs to be sent, so that the number
of paths can be re-established.
This patch achieves that by sending a HS ping probe from
rds_tcp_accept_one() when c_npaths is 0 (i.e., we have not done
a handshake probe with this peer yet).
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Tested-by: Jenny Xu <jenny.x.xu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/tcp_listen.c')
| -rw-r--r-- | net/rds/tcp_listen.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index df291ac245d6..6089e9a8e00a 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -192,6 +192,8 @@ int rds_tcp_accept_one(struct socket *sock) } new_sock = NULL; ret = 0; + if (conn->c_npaths == 0) + rds_send_ping(cp->cp_conn, cp->cp_index); goto out; rst_nsk: /* reset the newly returned accept sock and bail. |