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