diff options
author | Krishna Gudipati <kgudipat@brocade.com> | 2012-09-21 17:23:59 -0700 |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2012-10-07 11:03:50 +0100 |
commit | bc0e2c2a97c1747ac0ade9b8620b14079e69fe3d (patch) | |
tree | 41fa46fba9a056b22f3b1212e076ec33529cab15 /drivers/scsi/bfa/bfa_fcs.c | |
parent | 56d92aa5cf7c96c70f81d0350c94faf46a9fb76d (diff) | |
download | linux-bc0e2c2a97c1747ac0ade9b8620b14079e69fe3d.tar.bz2 |
[SCSI] bfa: Add support for FC Arbitrated Loop topology.
- Add private loop topology support at 2G/4G/8G speeds with following
limitations
1. No support for multiple initiators in the loop
2. No public loop support. If attached to a loop with an FL_Port,
device continues to work as a private NL_Port in the loop
3. No auto topology detection. User has to manually set the
configured topology to loop if attaching to loop.
- When loop topology is configured, enabling FC port features
QoS/Trunk/TRL are not allowed and vice versa.
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/bfa/bfa_fcs.c')
-rw-r--r-- | drivers/scsi/bfa/bfa_fcs.c | 64 |
1 files changed, 51 insertions, 13 deletions
diff --git a/drivers/scsi/bfa/bfa_fcs.c b/drivers/scsi/bfa/bfa_fcs.c index fd3e84d32bd2..d428808fb37e 100644 --- a/drivers/scsi/bfa/bfa_fcs.c +++ b/drivers/scsi/bfa/bfa_fcs.c @@ -303,16 +303,30 @@ static void bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric, enum bfa_fcs_fabric_event event) { + struct bfa_s *bfa = fabric->fcs->bfa; + bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn); bfa_trc(fabric->fcs, event); switch (event) { case BFA_FCS_FABRIC_SM_START: - if (bfa_fcport_is_linkup(fabric->fcs->bfa)) { + if (!bfa_fcport_is_linkup(fabric->fcs->bfa)) { + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown); + break; + } + if (bfa_fcport_get_topology(bfa) == + BFA_PORT_TOPOLOGY_LOOP) { + fabric->fab_type = BFA_FCS_FABRIC_LOOP; + fabric->bport.pid = bfa_fcport_get_myalpa(bfa); + fabric->bport.pid = bfa_hton3b(fabric->bport.pid); + bfa_sm_set_state(fabric, + bfa_fcs_fabric_sm_online); + bfa_fcs_fabric_set_opertype(fabric); + bfa_fcs_lport_online(&fabric->bport); + } else { bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi); bfa_fcs_fabric_login(fabric); - } else - bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown); + } break; case BFA_FCS_FABRIC_SM_LINK_UP: @@ -337,16 +351,28 @@ static void bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric, enum bfa_fcs_fabric_event event) { + struct bfa_s *bfa = fabric->fcs->bfa; + bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn); bfa_trc(fabric->fcs, event); switch (event) { case BFA_FCS_FABRIC_SM_LINK_UP: - bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi); - bfa_fcs_fabric_login(fabric); + if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP) { + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi); + bfa_fcs_fabric_login(fabric); + break; + } + fabric->fab_type = BFA_FCS_FABRIC_LOOP; + fabric->bport.pid = bfa_fcport_get_myalpa(bfa); + fabric->bport.pid = bfa_hton3b(fabric->bport.pid); + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online); + bfa_fcs_fabric_set_opertype(fabric); + bfa_fcs_lport_online(&fabric->bport); break; case BFA_FCS_FABRIC_SM_RETRY_OP: + case BFA_FCS_FABRIC_SM_LOOPBACK: break; case BFA_FCS_FABRIC_SM_DELETE: @@ -595,14 +621,20 @@ void bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric, enum bfa_fcs_fabric_event event) { + struct bfa_s *bfa = fabric->fcs->bfa; + bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn); bfa_trc(fabric->fcs, event); switch (event) { case BFA_FCS_FABRIC_SM_LINK_DOWN: bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown); - bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE); - bfa_fcs_fabric_notify_offline(fabric); + if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) { + bfa_fcs_lport_offline(&fabric->bport); + } else { + bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE); + bfa_fcs_fabric_notify_offline(fabric); + } break; case BFA_FCS_FABRIC_SM_DELETE: @@ -719,20 +751,29 @@ static void bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric, enum bfa_fcs_fabric_event event) { + struct bfa_s *bfa = fabric->fcs->bfa; + bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn); bfa_trc(fabric->fcs, event); switch (event) { case BFA_FCS_FABRIC_SM_STOPCOMP: - bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup); - bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT); + if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) { + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created); + } else { + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup); + bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT); + } break; case BFA_FCS_FABRIC_SM_LINK_UP: break; case BFA_FCS_FABRIC_SM_LINK_DOWN: - bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup); + if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created); + else + bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup); break; default: @@ -975,9 +1016,6 @@ bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric) struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg; u8 alpa = 0, bb_scn = 0; - if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) - alpa = bfa_fcport_get_myalpa(bfa); - if (bfa_fcs_fabric_is_bbscn_enabled(fabric) && (!fabric->fcs->bbscn_flogi_rjt)) bb_scn = BFA_FCS_PORT_DEF_BB_SCN; |