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| author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-01-09 16:55:23 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-09 16:07:40 -0500 |
| commit | e6727f39004bd95725342b3b343a14c7d59df07f (patch) | |
| tree | 376bebbead3f9f2cabaddd75cfd34c32fe16ffda /net/smc/af_smc.c | |
| parent | 5f08318f617b05b6ee389d8bd174c7af921ebf19 (diff) | |
| download | lwn-e6727f39004bd95725342b3b343a14c7d59df07f.tar.gz lwn-e6727f39004bd95725342b3b343a14c7d59df07f.zip | |
smc: send data (through RDMA)
copy data to kernel send buffer, and trigger RDMA write
Signed-off-by: Ursula Braun <ubraun@linux.vnet.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 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 4b1611d46ef7..b62b69c6c718 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -37,6 +37,7 @@ #include "smc_core.h" #include "smc_ib.h" #include "smc_pnet.h" +#include "smc_tx.h" static DEFINE_MUTEX(smc_create_lgr_pending); /* serialize link group * creation @@ -410,6 +411,8 @@ static int smc_connect_rdma(struct smc_sock *smc) } mutex_unlock(&smc_create_lgr_pending); + smc_tx_init(smc); + out_connected: smc_copy_sock_settings_to_clc(smc); smc->sk.sk_state = SMC_ACTIVE; @@ -751,6 +754,8 @@ static void smc_listen_work(struct work_struct *work) goto decline_rdma; } + smc_tx_init(new_smc); + out_connected: sk_refcnt_debug_inc(newsmcsk); newsmcsk->sk_state = SMC_ACTIVE; @@ -924,7 +929,7 @@ static int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) if (smc->use_fallback) rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); else - rc = sock_no_sendmsg(sock, msg, len); + rc = smc_tx_sendmsg(smc, msg, len); out: release_sock(sk); return rc; @@ -1005,6 +1010,12 @@ static unsigned int smc_poll(struct file *file, struct socket *sock, mask |= smc_accept_poll(sk); if (sk->sk_err) mask |= POLLERR; + if (atomic_read(&smc->conn.sndbuf_space)) { + mask |= POLLOUT | POLLWRNORM; + } else { + sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk); + set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); + } /* for now - to be enhanced in follow-on patch */ } |