diff options
| author | Ursula Braun <ubraun@linux.ibm.com> | 2018-04-26 18:18:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-27 21:02:52 +0300 |
| commit | 01d2f7e2cdd31becffafa0cb82809a5e36558ec0 (patch) | |
| tree | 5df8e8f6838478e51efe14206d17a522cda03ed5 /net/smc/af_smc.c | |
| parent | ee9dfbef02d186a90f3a4876b276701966a92d10 (diff) | |
| download | linux-01d2f7e2cdd31becffafa0cb82809a5e36558ec0.tar.xz | |
net/smc: sockopts TCP_NODELAY and TCP_CORK
Setting sockopt TCP_NODELAY or resetting sockopt TCP_CORK
triggers data transfer.
For a corked SMC socket RDMA writes are deferred, if there is
still sufficient send buffer space available.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/af_smc.c')
| -rw-r--r-- | net/smc/af_smc.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index d274be7265ea..9d8b381281e3 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1291,7 +1291,7 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, { struct sock *sk = sock->sk; struct smc_sock *smc; - int rc; + int val, rc; smc = smc_sk(sk); @@ -1307,6 +1307,10 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, if (rc) return rc; + if (optlen < sizeof(int)) + return rc; + get_user(val, (int __user *)optval); + lock_sock(sk); switch (optname) { case TCP_ULP: @@ -1322,6 +1326,20 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, rc = -EINVAL; } break; + case TCP_NODELAY: + if (sk->sk_state != SMC_INIT && sk->sk_state != SMC_LISTEN) { + if (val) + mod_delayed_work(system_wq, &smc->conn.tx_work, + 0); + } + break; + case TCP_CORK: + if (sk->sk_state != SMC_INIT && sk->sk_state != SMC_LISTEN) { + if (!val) + mod_delayed_work(system_wq, &smc->conn.tx_work, + 0); + } + break; default: break; } |