2 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
19 * n2n.c n2n implementation.
23 #include "fcs_lport.h"
24 #include "fcs_rport.h"
25 #include "fcs_trcmod.h"
26 #include "lport_priv.h"
28 BFA_TRC_FILE(FCS, N2N);
31 * Called by fcs/port to initialize N2N topology.
34 bfa_fcs_port_n2n_init(struct bfa_fcs_port_s *port)
39 * Called by fcs/port to notify transition to online state.
42 bfa_fcs_port_n2n_online(struct bfa_fcs_port_s *port)
44 struct bfa_fcs_port_n2n_s *n2n_port = &port->port_topo.pn2n;
45 struct bfa_port_cfg_s *pcfg = &port->port_cfg;
46 struct bfa_fcs_rport_s *rport;
48 bfa_trc(port->fcs, pcfg->pwwn);
51 * If our PWWN is > than that of the r-port, we have to initiate PLOGI
52 * and assign an Address. if not, we need to wait for its PLOGI.
54 * If our PWWN is < than that of the remote port, it will send a PLOGI
55 * with the PIDs assigned. The rport state machine take care of this
59 ((void *)&pcfg->pwwn, (void *)&n2n_port->rem_port_wwn,
61 port->pid = N2N_LOCAL_PID;
63 * First, check if we know the device by pwwn.
65 rport = bfa_fcs_port_get_rport_by_pwwn(port,
66 n2n_port->rem_port_wwn);
68 bfa_trc(port->fcs, rport->pid);
69 bfa_trc(port->fcs, rport->pwwn);
70 rport->pid = N2N_REMOTE_PID;
71 bfa_fcs_rport_online(rport);
76 * In n2n there can be only one rport. Delete the old one whose
77 * pid should be zero, because it is offline.
79 if (port->num_rports > 0) {
80 rport = bfa_fcs_port_get_rport_by_pid(port, 0);
81 bfa_assert(rport != NULL);
83 bfa_trc(port->fcs, rport->pwwn);
84 bfa_fcs_rport_delete(rport);
87 bfa_fcs_rport_create(port, N2N_REMOTE_PID);
92 * Called by fcs/port to notify transition to offline state.
95 bfa_fcs_port_n2n_offline(struct bfa_fcs_port_s *port)
97 struct bfa_fcs_port_n2n_s *n2n_port = &port->port_topo.pn2n;
99 bfa_trc(port->fcs, port->pid);
101 n2n_port->rem_port_wwn = 0;
102 n2n_port->reply_oxid = 0;