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libfc: Reject PLOGI from nodes with incompatible role

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Reject a PLOGI from a node with an incompatible role,
that is, initiator-to-initiator or target-to-target.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Reviewed-by: Yi Zou <yi.zou@intel.com>
Tested-by: Jack Morgan <jack.morgan@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
This commit is contained in:
Mark Rustad 2013-05-18 04:01:36 +00:00 committed by Robert Love
parent 8bb495e3f0
commit e0335f67a2
1 changed files with 27 additions and 0 deletions
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27
drivers/scsi/libfc/fc_rport.c
View File

@ -926,6 +926,20 @@ err:
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
}
static bool
fc_rport_compatible_roles(struct fc_lport *lport, struct fc_rport_priv *rdata)
{
if (rdata->ids.roles == FC_PORT_ROLE_UNKNOWN)
return true;
if ((rdata->ids.roles & FC_PORT_ROLE_FCP_TARGET) &&
(lport->service_params & FCP_SPPF_INIT_FCN))
return true;
if ((rdata->ids.roles & FC_PORT_ROLE_FCP_INITIATOR) &&
(lport->service_params & FCP_SPPF_TARG_FCN))
return true;
return false;
}
/**
* fc_rport_enter_plogi() - Send Port Login (PLOGI) request
* @rdata: The remote port to send a PLOGI to
@ -938,6 +952,12 @@ static void fc_rport_enter_plogi(struct fc_rport_priv *rdata)
struct fc_lport *lport = rdata->local_port;
struct fc_frame *fp;
if (!fc_rport_compatible_roles(lport, rdata)) {
FC_RPORT_DBG(rdata, "PLOGI suppressed for incompatible role\n");
fc_rport_state_enter(rdata, RPORT_ST_PLOGI_WAIT);
return;
}
FC_RPORT_DBG(rdata, "Port entered PLOGI state from %s state\n",
fc_rport_state(rdata));
@ -1646,6 +1666,13 @@ static void fc_rport_recv_plogi_req(struct fc_lport *lport,
rjt_data.explan = ELS_EXPL_NONE;
goto reject;
}
if (!fc_rport_compatible_roles(lport, rdata)) {
FC_RPORT_DBG(rdata, "Received PLOGI for incompatible role\n");
mutex_unlock(&rdata->rp_mutex);
rjt_data.reason = ELS_RJT_LOGIC;
rjt_data.explan = ELS_EXPL_NONE;
goto reject;
}
/*
* Get session payload size from incoming PLOGI.