| Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. |
| 3 | * All rights reserved |
| 4 | * www.brocade.com |
| 5 | * |
| 6 | * Linux driver for Brocade Fibre Channel Host Bus Adapter. |
| 7 | * |
| 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 |
| 11 | * |
| 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. |
| 16 | */ |
| 17 | |
| 18 | /** |
| 19 | * n2n.c n2n implementation. |
| 20 | */ |
| 21 | #include <bfa.h> |
| 22 | #include <bfa_svc.h> |
| 23 | #include "fcs_lport.h" |
| 24 | #include "fcs_rport.h" |
| 25 | #include "fcs_trcmod.h" |
| 26 | #include "lport_priv.h" |
| 27 | |
| 28 | BFA_TRC_FILE(FCS, N2N); |
| 29 | |
| 30 | /** |
| 31 | * Called by fcs/port to initialize N2N topology. |
| 32 | */ |
| 33 | void |
| 34 | bfa_fcs_port_n2n_init(struct bfa_fcs_port_s *port) |
| 35 | { |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Called by fcs/port to notify transition to online state. |
| 40 | */ |
| 41 | void |
| 42 | bfa_fcs_port_n2n_online(struct bfa_fcs_port_s *port) |
| 43 | { |
| 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; |
| 47 | |
| 48 | bfa_trc(port->fcs, pcfg->pwwn); |
| 49 | |
| 50 | /* |
| 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. |
| 53 | * |
| 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 |
| 56 | * incoming PLOGI. |
| 57 | */ |
| 58 | if (memcmp |
| 59 | ((void *)&pcfg->pwwn, (void *)&n2n_port->rem_port_wwn, |
| 60 | sizeof(wwn_t)) > 0) { |
| 61 | port->pid = N2N_LOCAL_PID; |
| 62 | /** |
| 63 | * First, check if we know the device by pwwn. |
| 64 | */ |
| 65 | rport = bfa_fcs_port_get_rport_by_pwwn(port, |
| 66 | n2n_port->rem_port_wwn); |
| 67 | if (rport) { |
| 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); |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | /* |
| 76 | * In n2n there can be only one rport. Delete the old one whose |
| 77 | * pid should be zero, because it is offline. |
| 78 | */ |
| 79 | if (port->num_rports > 0) { |
| 80 | rport = bfa_fcs_port_get_rport_by_pid(port, 0); |
| 81 | bfa_assert(rport != NULL); |
| 82 | if (rport) { |
| 83 | bfa_trc(port->fcs, rport->pwwn); |
| 84 | bfa_fcs_rport_delete(rport); |
| 85 | } |
| 86 | } |
| 87 | bfa_fcs_rport_create(port, N2N_REMOTE_PID); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Called by fcs/port to notify transition to offline state. |
| 93 | */ |
| 94 | void |
| 95 | bfa_fcs_port_n2n_offline(struct bfa_fcs_port_s *port) |
| 96 | { |
| 97 | struct bfa_fcs_port_n2n_s *n2n_port = &port->port_topo.pn2n; |
| 98 | |
| 99 | bfa_trc(port->fcs, port->pid); |
| 100 | port->pid = 0; |
| 101 | n2n_port->rem_port_wwn = 0; |
| 102 | n2n_port->reply_oxid = 0; |
| 103 | } |
| 104 | |
| 105 | |