diff options
| author | Wen Gu <guwen@linux.alibaba.com> | 2024-04-28 14:07:36 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-04-30 13:24:48 +0200 |
| commit | ae2be35cbed2c8385e890147ea321a3fcc3ca5fa (patch) | |
| tree | 592a3af27fc6f8a26161ae722d23bcb3bcb8c904 /net/smc/af_smc.c | |
| parent | 4398888268582cb51b69c6ee94f551bb8d37d12f (diff) | |
net/smc: {at|de}tach sndbuf to peer DMB if supported
If the device used by SMC-D supports merging local sndbuf to peer DMB,
then create sndbuf descriptor and attach it to peer DMB once peer
token is obtained, and detach and free the sndbuf descriptor when the
connection is freed.
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.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 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 47f3bc1470bc..9389f0cfa374 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1436,6 +1436,14 @@ static int smc_connect_ism(struct smc_sock *smc, } smc_conn_save_peer_info(smc, aclc); + + if (smc_ism_support_dmb_nocopy(smc->conn.lgr->smcd)) { + rc = smcd_buf_attach(smc); + if (rc) { + rc = SMC_CLC_DECL_MEM; /* try to fallback */ + goto connect_abort; + } + } smc_close_init(smc); smc_rx_init(smc); smc_tx_init(smc); @@ -2540,6 +2548,14 @@ static void smc_listen_work(struct work_struct *work) mutex_unlock(&smc_server_lgr_pending); } smc_conn_save_peer_info(new_smc, cclc); + + if (ini->is_smcd && + smc_ism_support_dmb_nocopy(new_smc->conn.lgr->smcd)) { + rc = smcd_buf_attach(new_smc); + if (rc) + goto out_decl; + } + smc_listen_out_connected(new_smc); SMC_STAT_SERV_SUCC_INC(sock_net(newclcsock->sk), ini); goto out_free; |