diff options
| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-05-01 12:48:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-01 16:20:05 -0700 |
| commit | 6c868a3edc70ec9819d6a94268625d25e6bc9587 (patch) | |
| tree | 4df8cf1096ba6527772313a68275f5ef7c4e1c75 | |
| parent | 33d203302d1cc744a13349d2576c985feb469220 (diff) | |
net/smc: introduce smc_pnet_find_alt_roce()
Introduce a new function in smc_pnet.c that searches for an alternate
IB device, using an existing link group and a primary IB device. The
alternate IB device needs to be active and must have the same PNETID
as the link group.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/smc/smc_pnet.c | 15 | ||||
| -rw-r--r-- | net/smc/smc_pnet.h | 5 |
2 files changed, 17 insertions, 3 deletions
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c index bd01c71b827a..50c96e843fab 100644 --- a/net/smc/smc_pnet.c +++ b/net/smc/smc_pnet.c @@ -777,7 +777,8 @@ static int smc_pnet_find_ndev_pnetid_by_table(struct net_device *ndev, /* find a roce device for the given pnetid */ static void _smc_pnet_find_roce_by_pnetid(u8 *pnet_id, - struct smc_init_info *ini) + struct smc_init_info *ini, + struct smc_ib_device *known_dev) { struct smc_ib_device *ibdev; int i; @@ -785,6 +786,8 @@ static void _smc_pnet_find_roce_by_pnetid(u8 *pnet_id, ini->ib_dev = NULL; spin_lock(&smc_ib_devices.lock); list_for_each_entry(ibdev, &smc_ib_devices.list, list) { + if (ibdev == known_dev) + continue; for (i = 1; i <= SMC_MAX_PORTS; i++) { if (!rdma_is_port_valid(ibdev->ibdev, i)) continue; @@ -803,6 +806,14 @@ out: spin_unlock(&smc_ib_devices.lock); } +/* find alternate roce device with same pnet_id and vlan_id */ +void smc_pnet_find_alt_roce(struct smc_link_group *lgr, + struct smc_init_info *ini, + struct smc_ib_device *known_dev) +{ + _smc_pnet_find_roce_by_pnetid(lgr->pnet_id, ini, known_dev); +} + /* if handshake network device belongs to a roce device, return its * IB device and port */ @@ -857,7 +868,7 @@ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev, smc_pnet_find_rdma_dev(ndev, ini); return; /* pnetid could not be determined */ } - _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini); + _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini, NULL); } static void smc_pnet_find_ism_by_pnetid(struct net_device *ndev, diff --git a/net/smc/smc_pnet.h b/net/smc/smc_pnet.h index ea207f8fc6f7..811a65986691 100644 --- a/net/smc/smc_pnet.h +++ b/net/smc/smc_pnet.h @@ -19,6 +19,7 @@ struct smc_ib_device; struct smcd_dev; struct smc_init_info; +struct smc_link_group; /** * struct smc_pnettable - SMC PNET table anchor @@ -48,5 +49,7 @@ void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini); void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini); int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port); int smc_pnetid_by_table_smcd(struct smcd_dev *smcd); - +void smc_pnet_find_alt_roce(struct smc_link_group *lgr, + struct smc_init_info *ini, + struct smc_ib_device *known_dev); #endif |