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| author |   Hans Wippel <hwippel@linux.ibm.com> | 2018-06-28 19:05:09 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-06-30 20:42:25 +0900 |
| commit | c758dfddc1b5b1c9b8c64e5e4bb9bf24b74f4a59 (patch) | |
| tree | cb5f055473e2882c0b87b7052394cd1960cb8a3d /net/smc/af_smc.c | |
| parent | net/smc: add pnetid support for SMC-D and ISM (diff) | |
| download | linux-dev-c758dfddc1b5b1c9b8c64e5e4bb9bf24b74f4a59.tar.xz linux-dev-c758dfddc1b5b1c9b8c64e5e4bb9bf24b74f4a59.zip | |
net/smc: add SMC-D support in CLC messages
There are two types of SMC: SMC-R and SMC-D. These types are signaled
within the CLC messages during the CLC handshake. This patch adds
support for and checks of the SMC type.
Also, SMC-R and SMC-D need to exchange different information during the
CLC handshake. So, this patch extends the current message formats to
support the SMC-D header fields. The Proposal message can contain both
SMC-R and SMC-D information. The Accept and Confirm messages contain
either SMC-R or SMC-D information.
Signed-off-by: Hans Wippel <hwippel@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Suggested-by: Thomas Richter <tmricht@linux.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 | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 8ce48799cf68..20afa94be8bb 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -451,14 +451,14 @@ static int smc_check_rdma(struct smc_sock *smc, struct smc_ib_device **ibdev, } /* CLC handshake during connect */ -static int smc_connect_clc(struct smc_sock *smc, +static int smc_connect_clc(struct smc_sock *smc, int smc_type, struct smc_clc_msg_accept_confirm *aclc, struct smc_ib_device *ibdev, u8 ibport) { int rc = 0; /* do inband token exchange */ - rc = smc_clc_send_proposal(smc, ibdev, ibport); + rc = smc_clc_send_proposal(smc, smc_type, ibdev, ibport, NULL); if (rc) return rc; /* receive SMC Accept CLC message */ @@ -564,7 +564,7 @@ static int __smc_connect(struct smc_sock *smc) return smc_connect_decline_fallback(smc, SMC_CLC_DECL_CNFERR); /* perform CLC handshake */ - rc = smc_connect_clc(smc, &aclc, ibdev, ibport); + rc = smc_connect_clc(smc, SMC_TYPE_R, &aclc, ibdev, ibport); if (rc) return smc_connect_decline_fallback(smc, rc); @@ -1008,7 +1008,8 @@ static void smc_listen_work(struct work_struct *work) smc_tx_init(new_smc); /* check if RDMA is available */ - if (smc_check_rdma(new_smc, &ibdev, &ibport) || + if ((pclc->hdr.path != SMC_TYPE_R && pclc->hdr.path != SMC_TYPE_B) || + smc_check_rdma(new_smc, &ibdev, &ibport) || smc_listen_rdma_check(new_smc, pclc) || smc_listen_rdma_init(new_smc, pclc, ibdev, ibport, &local_contact) || |