diff options
| author | Guangguan Wang <guangguan.wang@linux.alibaba.com> | 2023-08-17 21:20:29 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-19 12:46:52 +0100 |
| commit | 6ac1e6563f5915cd38b6bc6a8b26964b2252f751 (patch) | |
| tree | 2665c53f4e3983ee3346c7ffc556d8fd53d2918c /net/smc/af_smc.c | |
| parent | 7290178a82fcc71694816ffe3c0c56453f0cf59c (diff) | |
net/smc: support smc v2.x features validate
Support SMC v2.x features validate for SMC v2.1. This is the frame
code for SMC v2.x features validate, and will take effects only when
the negotiated release version is v2.1 or later.
For Server, v2.x features' validation should be done in smc_clc_srv_
v2x_features_validate when receiving v2.1 or later CLC Proposal Message,
such as max conns, max links negotiation, the decision of the final
value of max conns and max links should be made in this function.
And final check for server when receiving v2.1 or later CLC Confirm
Message should be done in smc_clc_v2x_features_confirm_check.
For client, v2.x features' validation should be done in smc_clc_clnt_
v2x_features_validate when receiving v2.1 or later CLC Accept Message,
for example, the decision to accpt the accepted value or to decline
should be made in this function.
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Jan Karcher <jaka@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 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index b80c5902f703..337303b2a64e 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1199,6 +1199,7 @@ static int smc_connect_rdma_v2_prepare(struct smc_sock *smc, (struct smc_clc_msg_accept_confirm_v2 *)aclc; struct smc_clc_first_contact_ext *fce = smc_get_clc_first_contact_ext(clc_v2, false); + int rc; if (!ini->first_contact_peer || aclc->hdr.version == SMC_V1) return 0; @@ -1219,6 +1220,9 @@ static int smc_connect_rdma_v2_prepare(struct smc_sock *smc, } ini->release_nr = fce->release; + rc = smc_clc_clnt_v2x_features_validate(fce, ini); + if (rc) + return rc; return 0; } @@ -1393,6 +1397,9 @@ static int smc_connect_ism(struct smc_sock *smc, smc_get_clc_first_contact_ext(aclc_v2, true); ini->release_nr = fce->release; + rc = smc_clc_clnt_v2x_features_validate(fce, ini); + if (rc) + return rc; } rc = smc_v2_determine_accepted_chid(aclc_v2, ini); @@ -2443,6 +2450,10 @@ static void smc_listen_work(struct work_struct *work) if (rc) goto out_decl; + rc = smc_clc_srv_v2x_features_validate(pclc, ini); + if (rc) + goto out_decl; + mutex_lock(&smc_server_lgr_pending); smc_close_init(new_smc); smc_rx_init(new_smc); @@ -2475,6 +2486,13 @@ static void smc_listen_work(struct work_struct *work) goto out_decl; } + rc = smc_clc_v2x_features_confirm_check(cclc, ini); + if (rc) { + if (!ini->is_smcd) + goto out_unlock; + goto out_decl; + } + /* finish worker */ if (!ini->is_smcd) { rc = smc_listen_rdma_finish(new_smc, cclc, |