diff options
| author | Tony Lu <tonylu@linux.alibaba.com> | 2022-09-20 12:52:22 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-09-22 13:58:21 +0300 |
| commit | 0227f058aa29f5ab6f6ec79c3a36ae41f1e03a13 (patch) | |
| tree | 024a70c93ec33d4e59ad7457e1a8856bbf371770 /net/smc/af_smc.c | |
| parent | 77eee32514314209961af5c2982e871ecb364445 (diff) | |
| download | linux-0227f058aa29f5ab6f6ec79c3a36ae41f1e03a13.tar.xz | |
net/smc: Unbind r/w buffer size from clcsock and make them tunable
Currently, SMC uses smc->sk.sk_{rcv|snd}buf to create buffers for
send buffer and RMB. And the values of buffer size are from tcp_{w|r}mem
in clcsock.
The buffer size from TCP socket doesn't fit SMC well. Generally, buffers
are usually larger than TCP for SMC-R/-D to get higher performance, for
they are different underlay devices and paths.
So this patch unbinds buffer size from TCP, and introduces two sysctl
knobs to tune them independently. Also, these knobs are per net
namespace and work for containers.
Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/smc/af_smc.c')
| -rw-r--r-- | net/smc/af_smc.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 0939cc3b915a..e44ca7009632 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -379,6 +379,8 @@ static struct sock *smc_sock_alloc(struct net *net, struct socket *sock, sk->sk_state = SMC_INIT; sk->sk_destruct = smc_destruct; sk->sk_protocol = protocol; + WRITE_ONCE(sk->sk_sndbuf, READ_ONCE(net->smc.sysctl_wmem)); + WRITE_ONCE(sk->sk_rcvbuf, READ_ONCE(net->smc.sysctl_rmem)); smc = smc_sk(sk); INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); INIT_WORK(&smc->connect_work, smc_connect_work); @@ -3253,9 +3255,6 @@ static int __smc_create(struct net *net, struct socket *sock, int protocol, smc->clcsock = clcsock; } - smc->sk.sk_sndbuf = max(smc->clcsock->sk->sk_sndbuf, SMC_BUF_MIN_SIZE); - smc->sk.sk_rcvbuf = max(smc->clcsock->sk->sk_rcvbuf, SMC_BUF_MIN_SIZE); - out: return rc; } |