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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 |