net/smc: allow sysctl rmem and wmem defaults for servers

Without setsockopt SO_SNDBUF and SO_RCVBUF settings, the sysctl
defaults net.ipv4.tcp_wmem and net.ipv4.tcp_rmem should be the base
for the sizes of the SMC sndbuf and rcvbuf. Any TCP buffer size
optimizations for servers should be ignored.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 1288c7b..0ee7721 100644 (file)
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1122,6 +1122,8 @@ static void smc_tcp_listen_work(struct work_struct *work)
                sock_hold(lsk); /* sock_put in smc_listen_work */
                INIT_WORK(&new_smc->smc_listen_work, smc_listen_work);
                smc_copy_sock_settings_to_smc(new_smc);
+               new_smc->sk.sk_sndbuf = lsmc->sk.sk_sndbuf;
+               new_smc->sk.sk_rcvbuf = lsmc->sk.sk_rcvbuf;
                sock_hold(&new_smc->sk); /* sock_put in passive closing */
                if (!schedule_work(&new_smc->smc_listen_work))
                        sock_put(&new_smc->sk);