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/*
* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
* All rights reserved
* www.brocade.com
*
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) Version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
/**
* n2n.c n2n implementation.
*/
#include <bfa.h>
#include <bfa_svc.h>
#include "fcs_lport.h"
#include "fcs_rport.h"
#include "fcs_trcmod.h"
#include "lport_priv.h"
BFA_TRC_FILE(FCS, N2N);
/**
* Called by fcs/port to initialize N2N topology.
*/
void
bfa_fcs_port_n2n_init(struct bfa_fcs_port_s *port)
{
}
/**
* Called by fcs/port to notify transition to online state.
*/
void
bfa_fcs_port_n2n_online(struct bfa_fcs_port_s *port)
{
struct bfa_fcs_port_n2n_s *n2n_port = &port->port_topo.pn2n;
struct bfa_port_cfg_s *pcfg = &port->port_cfg;
struct bfa_fcs_rport_s *rport;
bfa_trc(port->fcs, pcfg->pwwn);
/*
* If our PWWN is > than that of the r-port, we have to initiate PLOGI
* and assign an Address. if not, we need to wait for its PLOGI.
*
* If our PWWN is < than that of the remote port, it will send a PLOGI
* with the PIDs assigned. The rport state machine take care of this
* incoming PLOGI.
*/
if (memcmp
((void *)&pcfg->pwwn, (void *)&n2n_port->rem_port_wwn,
sizeof(wwn_t)) > 0) {
port->pid = N2N_LOCAL_PID;
/**
* First, check if we know the device by pwwn.
*/
rport = bfa_fcs_port_get_rport_by_pwwn(port,
n2n_port->rem_port_wwn);
if (rport) {
bfa_trc(port->fcs, rport->pid);
bfa_trc(port->fcs, rport->pwwn);
rport->pid = N2N_REMOTE_PID;
bfa_fcs_rport_online(rport);
return;
}
/*
* In n2n there can be only one rport. Delete the old one whose
* pid should be zero, because it is offline.
*/
if (port->num_rports > 0) {
rport = bfa_fcs_port_get_rport_by_pid(port, 0);
bfa_assert(rport != NULL);
if (rport) {
bfa_trc(port->fcs, rport->pwwn);
bfa_fcs_rport_delete(rport);
}
}
bfa_fcs_rport_create(port, N2N_REMOTE_PID);
}
}
/**
* Called by fcs/port to notify transition to offline state.
*/
void
bfa_fcs_port_n2n_offline(struct bfa_fcs_port_s *port)
{
struct bfa_fcs_port_n2n_s *n2n_port = &port->port_topo.pn2n;
bfa_trc(port->fcs, port->pid);
port->pid = 0;
n2n_port->rem_port_wwn = 0;
n2n_port->reply_oxid = 0;
}
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