diff options
| author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-07-28 13:56:17 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-29 11:22:58 -0700 |
| commit | 652a1e41eca7dfaacc47a79badb4a51aea570d35 (patch) | |
| tree | e82c80636c8e25421761b0dd28e0659686cf4128 /net/smc/af_smc.c | |
| parent | 897e1c245773d93f26f125a99674f585a3aeef5d (diff) | |
| download | linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.tar.gz linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.tar.bz2 linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.zip | |
net/smc: register RMB-related memory region
A memory region created for a new RMB must be registered explicitly,
before the peer can make use of it for remote DMA transfer.
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 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 120a7b9b4d8e..e0a95d50bf87 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -338,6 +338,12 @@ static int smc_clnt_conf_first_link(struct smc_sock *smc, union ib_gid *gid) return SMC_CLC_DECL_INTERR; smc_wr_remember_qp_attr(link); + + rc = smc_wr_reg_send(link, + smc->conn.rmb_desc->mr_rx[SMC_SINGLE_LINK]); + if (rc) + return SMC_CLC_DECL_INTERR; + /* send CONFIRM LINK response over RoCE fabric */ rc = smc_llc_send_confirm_link(link, link->smcibdev->mac[link->ibport - 1], @@ -459,6 +465,18 @@ static int smc_connect_rdma(struct smc_sock *smc) reason_code = SMC_CLC_DECL_INTERR; goto decline_rdma_unlock; } + } else { + struct smc_buf_desc *buf_desc = smc->conn.rmb_desc; + + if (!buf_desc->reused) { + /* register memory region for new rmb */ + rc = smc_wr_reg_send(link, + buf_desc->mr_rx[SMC_SINGLE_LINK]); + if (rc) { + reason_code = SMC_CLC_DECL_INTERR; + goto decline_rdma_unlock; + } + } } rc = smc_clc_send_confirm(smc); @@ -692,6 +710,12 @@ static int smc_serv_conf_first_link(struct smc_sock *smc) int rc; link = &lgr->lnk[SMC_SINGLE_LINK]; + + rc = smc_wr_reg_send(link, + smc->conn.rmb_desc->mr_rx[SMC_SINGLE_LINK]); + if (rc) + return SMC_CLC_DECL_INTERR; + /* send CONFIRM LINK request to client over the RoCE fabric */ rc = smc_llc_send_confirm_link(link, link->smcibdev->mac[link->ibport - 1], @@ -803,6 +827,20 @@ static void smc_listen_work(struct work_struct *work) smc_close_init(new_smc); smc_rx_init(new_smc); + if (local_contact != SMC_FIRST_CONTACT) { + struct smc_buf_desc *buf_desc = new_smc->conn.rmb_desc; + + if (!buf_desc->reused) { + /* register memory region for new rmb */ + rc = smc_wr_reg_send(link, + buf_desc->mr_rx[SMC_SINGLE_LINK]); + if (rc) { + reason_code = SMC_CLC_DECL_INTERR; + goto decline_rdma; + } + } + } + rc = smc_clc_send_accept(new_smc, local_contact); if (rc) goto out_err; |