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net/smc: retrieve v2 gid from IB device

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In smc_ib.c, scan for RoCE devices that support UDP encapsulation.
Find an eligible device and check that there is a route to the
remote peer.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul
2021-10-16 11:37:48 +02:00
committed by David S. Miller
parent 8ade200c26
commit 24fb68111d
4 changed files with 95 additions and 30 deletions
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4
net/smc/smc_core.c
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@@ -715,7 +715,9 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
lnk->psn_initial = rndvec[0] + (rndvec[1] << 8) +
(rndvec[2] << 16);
rc = smc_ib_determine_gid(lnk->smcibdev, lnk->ibport,
ini->vlan_id, lnk->gid, &lnk->sgid_index);
ini->vlan_id, lnk->gid, &lnk->sgid_index,
lgr->smc_version == SMC_V2 ?
&ini->smcrv2 : NULL);
if (rc)
goto out;
rc = smc_llc_link_init(lnk);