1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 */
6 #ifndef _FIP_H_
7 #define _FIP_H_
8
9 #include "fdls_fc.h"
10 #include "fnic_fdls.h"
11 #include <scsi/fc/fc_fip.h>
12
13 /* Drop the cast from the standard definition */
14 #define FCOE_ALL_FCFS_MAC {0x01, 0x10, 0x18, 0x01, 0x00, 0x02}
15 #define FCOE_MAX_SIZE 0x082E
16
17 #define FCOE_CTLR_FIPVLAN_TOV (3*1000)
18 #define FCOE_CTLR_FCS_TOV (3*1000)
19 #define FCOE_CTLR_MAX_SOL (5*1000)
20
21 #define FIP_DISC_SOL_LEN (6)
22 #define FIP_VLAN_REQ_LEN (2)
23 #define FIP_ENODE_KA_LEN (2)
24 #define FIP_VN_KA_LEN (7)
25 #define FIP_FLOGI_LEN (38)
26
27 enum fdls_vlan_state {
28 FIP_VLAN_AVAIL,
29 FIP_VLAN_SENT
30 };
31
32 enum fdls_fip_state {
33 FDLS_FIP_INIT,
34 FDLS_FIP_VLAN_DISCOVERY_STARTED,
35 FDLS_FIP_FCF_DISCOVERY_STARTED,
36 FDLS_FIP_FLOGI_STARTED,
37 FDLS_FIP_FLOGI_COMPLETE,
38 };
39
40 /*
41 * VLAN entry.
42 */
43 struct fcoe_vlan {
44 struct list_head list;
45 uint16_t vid; /* vlan ID */
46 uint16_t sol_count; /* no. of sols sent */
47 uint16_t state; /* state */
48 };
49
50 struct fip_vlan_req {
51 struct ethhdr eth;
52 struct fip_header fip;
53 struct fip_mac_desc mac_desc;
54 } __packed;
55
56 struct fip_vlan_notif {
57 struct fip_header fip;
58 struct fip_vlan_desc vlans_desc[];
59 } __packed;
60
61 struct fip_vn_port_ka {
62 struct ethhdr eth;
63 struct fip_header fip;
64 struct fip_mac_desc mac_desc;
65 struct fip_vn_desc vn_port_desc;
66 } __packed;
67
68 struct fip_enode_ka {
69 struct ethhdr eth;
70 struct fip_header fip;
71 struct fip_mac_desc mac_desc;
72 } __packed;
73
74 struct fip_cvl {
75 struct fip_header fip;
76 struct fip_mac_desc fcf_mac_desc;
77 struct fip_wwn_desc name_desc;
78 struct fip_vn_desc vn_ports_desc[];
79 } __packed;
80
81 struct fip_flogi_desc {
82 struct fip_desc fd_desc;
83 uint16_t rsvd;
84 struct fc_std_flogi flogi;
85 } __packed;
86
87 struct fip_flogi_rsp_desc {
88 struct fip_desc fd_desc;
89 uint16_t rsvd;
90 struct fc_std_flogi flogi;
91 } __packed;
92
93 struct fip_flogi {
94 struct ethhdr eth;
95 struct fip_header fip;
96 struct fip_flogi_desc flogi_desc;
97 struct fip_mac_desc mac_desc;
98 } __packed;
99
100 struct fip_flogi_rsp {
101 struct fip_header fip;
102 struct fip_flogi_rsp_desc rsp_desc;
103 struct fip_mac_desc mac_desc;
104 } __packed;
105
106 struct fip_discovery {
107 struct ethhdr eth;
108 struct fip_header fip;
109 struct fip_mac_desc mac_desc;
110 struct fip_wwn_desc name_desc;
111 struct fip_size_desc fcoe_desc;
112 } __packed;
113
114 struct fip_disc_adv {
115 struct fip_header fip;
116 struct fip_pri_desc prio_desc;
117 struct fip_mac_desc mac_desc;
118 struct fip_wwn_desc name_desc;
119 struct fip_fab_desc fabric_desc;
120 struct fip_fka_desc fka_adv_desc;
121 } __packed;
122
123 void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct fip_header *fiph);
124 void fnic_fcoe_fip_discovery_resp(struct fnic *fnic, struct fip_header *fiph);
125 void fnic_fcoe_process_flogi_resp(struct fnic *fnic, struct fip_header *fiph);
126 void fnic_work_on_fip_timer(struct work_struct *work);
127 void fnic_work_on_fcs_ka_timer(struct work_struct *work);
128 void fnic_fcoe_send_vlan_req(struct fnic *fnic);
129 void fnic_fcoe_start_fcf_discovery(struct fnic *fnic);
130 void fnic_fcoe_start_flogi(struct fnic *fnic);
131 void fnic_fcoe_process_cvl(struct fnic *fnic, struct fip_header *fiph);
132 void fnic_vlan_discovery_timeout(struct fnic *fnic);
133
134 extern struct workqueue_struct *fnic_fip_queue;
135
136 #ifdef FNIC_DEBUG
137 static inline void
fnic_debug_dump_fip_frame(struct fnic * fnic,struct ethhdr * eth,int len,char * pfx)138 fnic_debug_dump_fip_frame(struct fnic *fnic, struct ethhdr *eth,
139 int len, char *pfx)
140 {
141 struct fip_header *fiph = (struct fip_header *)(eth + 1);
142 u16 op = be16_to_cpu(fiph->fip_op);
143 u8 sub = fiph->fip_subcode;
144
145 FNIC_FCS_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
146 "FIP %s packet contents: op: 0x%x sub: 0x%x (len = %d)",
147 pfx, op, sub, len);
148
149 fnic_debug_dump(fnic, (uint8_t *)eth, len);
150 }
151
152 #else /* FNIC_DEBUG */
153
154 static inline void
fnic_debug_dump_fip_frame(struct fnic * fnic,struct ethhdr * eth,int len,char * pfx)155 fnic_debug_dump_fip_frame(struct fnic *fnic, struct ethhdr *eth,
156 int len, char *pfx) {}
157 #endif /* FNIC_DEBUG */
158
159 #endif /* _FIP_H_ */
160