[PATCH 5.17 315/343] net/smc: send directly on setting TCP_NODELAY

From: Greg Kroah-Hartman
Date: Tue Apr 12 2022 - 04:59:01 EST


From: Dust Li <dust.li@xxxxxxxxxxxxxxxxx>

commit b70a5cc045197aad9c159042621baf3c015f6cc7 upstream.

In commit ea785a1a573b("net/smc: Send directly when
TCP_CORK is cleared"), we don't use delayed work
to implement cork.

This patch use the same algorithm, removes the
delayed work when setting TCP_NODELAY and send
directly in setsockopt(). This also makes the
TCP_NODELAY the same as TCP.

Cc: Tony Lu <tonylu@xxxxxxxxxxxxxxxxx>
Signed-off-by: Dust Li <dust.li@xxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/smc/af_smc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -2625,8 +2625,8 @@ static int smc_setsockopt(struct socket
sk->sk_state != SMC_CLOSED) {
if (val) {
SMC_STAT_INC(smc, ndly_cnt);
- mod_delayed_work(smc->conn.lgr->tx_wq,
- &smc->conn.tx_work, 0);
+ smc_tx_pending(&smc->conn);
+ cancel_delayed_work(&smc->conn.tx_work);
}
}
break;