diff mbox series

[net,1/2] net/smc: fix matching of existing link groups

Message ID 20201118214038.24039-2-kgraul@linux.ibm.com (mailing list archive)
State Accepted
Commit 0530bd6e6a3d5a0292a1a5f33ea980ae7e8b56ca
Delegated to: Netdev Maintainers
Headers show
Series net/smc: fixes 2020-11-18 | expand

Checks

Context Check Description
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netdev/fixes_present success Link
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netdev/subject_prefix success Link
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 18 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Karsten Graul Nov. 18, 2020, 9:40 p.m. UTC
With the multi-subnet support of SMC-Dv2 the match for existing link
groups should not include the vlanid of the network device.
Set ini->smcd_version accordingly before the call to smc_conn_create()
and use this value in smc_conn_create() to skip the vlanid check.

Fixes: 5c21c4ccafe8 ("net/smc: determine accepted ISM devices")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
---
 net/smc/af_smc.c   | 3 ++-
 net/smc/smc_core.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index e9f487c8c6d5..5dd4faaf7d6e 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -979,7 +979,8 @@  static int __smc_connect(struct smc_sock *smc)
 
 	/* check if smc modes and versions of CLC proposal and accept match */
 	rc = smc_connect_check_aclc(ini, aclc);
-	version = aclc->hdr.version == SMC_V1 ? SMC_V1 : version;
+	version = aclc->hdr.version == SMC_V1 ? SMC_V1 : SMC_V2;
+	ini->smcd_version = version;
 	if (rc)
 		goto vlan_cleanup;
 
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 2b19863f7171..af96f813c075 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1309,7 +1309,8 @@  int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
 				    ini->ism_peer_gid[ini->ism_selected]) :
 		     smcr_lgr_match(lgr, ini->ib_lcl, role, ini->ib_clcqpn)) &&
 		    !lgr->sync_err &&
-		    lgr->vlan_id == ini->vlan_id &&
+		    (ini->smcd_version == SMC_V2 ||
+		     lgr->vlan_id == ini->vlan_id) &&
 		    (role == SMC_CLNT || ini->is_smcd ||
 		     lgr->conns_num < SMC_RMBS_PER_LGR_MAX)) {
 			/* link group found */