summaryrefslogtreecommitdiff
path: root/net/ncsi/internal.h
blob: 38fc95a26f8fd8e5e17b59baf6d76deef9a64d0f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
/*
 * Copyright Gavin Shan, IBM Corporation 2016.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __NCSI_INTERNAL_H__
#define __NCSI_INTERNAL_H__

enum {
	NCSI_CAP_BASE		= 0,
	NCSI_CAP_GENERIC	= 0,
	NCSI_CAP_BC,
	NCSI_CAP_MC,
	NCSI_CAP_BUFFER,
	NCSI_CAP_AEN,
	NCSI_CAP_VLAN,
	NCSI_CAP_MAX
};

enum {
	NCSI_CAP_GENERIC_HWA             = 0x01, /* HW arbitration           */
	NCSI_CAP_GENERIC_HDS             = 0x02, /* HNC driver status change */
	NCSI_CAP_GENERIC_FC              = 0x04, /* HNC to MC flow control   */
	NCSI_CAP_GENERIC_FC1             = 0x08, /* MC to HNC flow control   */
	NCSI_CAP_GENERIC_MC              = 0x10, /* Global MC filtering      */
	NCSI_CAP_GENERIC_HWA_UNKNOWN     = 0x00, /* Unknown HW arbitration   */
	NCSI_CAP_GENERIC_HWA_SUPPORT     = 0x20, /* Supported HW arbitration */
	NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration        */
	NCSI_CAP_GENERIC_HWA_RESERVED    = 0x60, /* Reserved HW arbitration  */
	NCSI_CAP_GENERIC_HWA_MASK        = 0x60, /* Mask for HW arbitration  */
	NCSI_CAP_GENERIC_MASK            = 0x7f,
	NCSI_CAP_BC_ARP                  = 0x01, /* ARP packet filtering     */
	NCSI_CAP_BC_DHCPC                = 0x02, /* DHCP client filtering    */
	NCSI_CAP_BC_DHCPS                = 0x04, /* DHCP server filtering    */
	NCSI_CAP_BC_NETBIOS              = 0x08, /* NetBIOS packet filtering */
	NCSI_CAP_BC_MASK                 = 0x0f,
	NCSI_CAP_MC_IPV6_NEIGHBOR        = 0x01, /* IPv6 neighbor filtering  */
	NCSI_CAP_MC_IPV6_ROUTER          = 0x02, /* IPv6 router filering     */
	NCSI_CAP_MC_DHCPV6_RELAY         = 0x04, /* DHCPv6 relay / server MC */
	NCSI_CAP_MC_DHCPV6_WELL_KNOWN    = 0x08, /* DHCPv6 well-known MC     */
	NCSI_CAP_MC_IPV6_MLD             = 0x10, /* IPv6 MLD filtering       */
	NCSI_CAP_MC_IPV6_NEIGHBOR_S      = 0x20, /* IPv6 neighbour filtering */
	NCSI_CAP_MC_MASK                 = 0x3f,
	NCSI_CAP_AEN_LSC                 = 0x01, /* Link status change       */
	NCSI_CAP_AEN_CR                  = 0x02, /* Configuration required   */
	NCSI_CAP_AEN_HDS                 = 0x04, /* HNC driver status        */
	NCSI_CAP_AEN_MASK                = 0x07,
	NCSI_CAP_VLAN_ONLY               = 0x01, /* Filter VLAN packet only  */
	NCSI_CAP_VLAN_NO                 = 0x02, /* Filter VLAN and non-VLAN */
	NCSI_CAP_VLAN_ANY                = 0x04, /* Filter Any-and-non-VLAN  */
	NCSI_CAP_VLAN_MASK               = 0x07
};

enum {
	NCSI_MODE_BASE		= 0,
	NCSI_MODE_ENABLE	= 0,
	NCSI_MODE_TX_ENABLE,
	NCSI_MODE_LINK,
	NCSI_MODE_VLAN,
	NCSI_MODE_BC,
	NCSI_MODE_MC,
	NCSI_MODE_AEN,
	NCSI_MODE_FC,
	NCSI_MODE_MAX
};

enum {
	NCSI_FILTER_BASE	= 0,
	NCSI_FILTER_VLAN	= 0,
	NCSI_FILTER_UC,
	NCSI_FILTER_MC,
	NCSI_FILTER_MIXED,
	NCSI_FILTER_MAX
};

struct ncsi_channel_version {
	u32 version;		/* Supported BCD encoded NCSI version */
	u32 alpha2;		/* Supported BCD encoded NCSI version */
	u8  fw_name[12];	/* Firware name string                */
	u32 fw_version;		/* Firmware version                   */
	u16 pci_ids[4];		/* PCI identification                 */
	u32 mf_id;		/* Manufacture ID                     */
};

struct ncsi_channel_cap {
	u32 index;	/* Index of channel capabilities */
	u32 cap;	/* NCSI channel capability       */
};

struct ncsi_channel_mode {
	u32 index;	/* Index of channel modes      */
	u32 enable;	/* Enabled or disabled         */
	u32 size;	/* Valid entries in ncm_data[] */
	u32 data[8];	/* Data entries                */
};

struct ncsi_channel_filter {
	u32 index;	/* Index of channel filters          */
	u32 total;	/* Total entries in the filter table */
	u64 bitmap;	/* Bitmap of valid entries           */
	u32 data[];	/* Data for the valid entries        */
};

struct ncsi_channel_stats {
	u32 hnc_cnt_hi;		/* Counter cleared            */
	u32 hnc_cnt_lo;		/* Counter cleared            */
	u32 hnc_rx_bytes;	/* Rx bytes                   */
	u32 hnc_tx_bytes;	/* Tx bytes                   */
	u32 hnc_rx_uc_pkts;	/* Rx UC packets              */
	u32 hnc_rx_mc_pkts;     /* Rx MC packets              */
	u32 hnc_rx_bc_pkts;	/* Rx BC packets              */
	u32 hnc_tx_uc_pkts;	/* Tx UC packets              */
	u32 hnc_tx_mc_pkts;	/* Tx MC packets              */
	u32 hnc_tx_bc_pkts;	/* Tx BC packets              */
	u32 hnc_fcs_err;	/* FCS errors                 */
	u32 hnc_align_err;	/* Alignment errors           */
	u32 hnc_false_carrier;	/* False carrier detection    */
	u32 hnc_runt_pkts;	/* Rx runt packets            */
	u32 hnc_jabber_pkts;	/* Rx jabber packets          */
	u32 hnc_rx_pause_xon;	/* Rx pause XON frames        */
	u32 hnc_rx_pause_xoff;	/* Rx XOFF frames             */
	u32 hnc_tx_pause_xon;	/* Tx XON frames              */
	u32 hnc_tx_pause_xoff;	/* Tx XOFF frames             */
	u32 hnc_tx_s_collision;	/* Single collision frames    */
	u32 hnc_tx_m_collision;	/* Multiple collision frames  */
	u32 hnc_l_collision;	/* Late collision frames      */
	u32 hnc_e_collision;	/* Excessive collision frames */
	u32 hnc_rx_ctl_frames;	/* Rx control frames          */
	u32 hnc_rx_64_frames;	/* Rx 64-bytes frames         */
	u32 hnc_rx_127_frames;	/* Rx 65-127 bytes frames     */
	u32 hnc_rx_255_frames;	/* Rx 128-255 bytes frames    */
	u32 hnc_rx_511_frames;	/* Rx 256-511 bytes frames    */
	u32 hnc_rx_1023_frames;	/* Rx 512-1023 bytes frames   */
	u32 hnc_rx_1522_frames;	/* Rx 1024-1522 bytes frames  */
	u32 hnc_rx_9022_frames;	/* Rx 1523-9022 bytes frames  */
	u32 hnc_tx_64_frames;	/* Tx 64-bytes frames         */
	u32 hnc_tx_127_frames;	/* Tx 65-127 bytes frames     */
	u32 hnc_tx_255_frames;	/* Tx 128-255 bytes frames    */
	u32 hnc_tx_511_frames;	/* Tx 256-511 bytes frames    */
	u32 hnc_tx_1023_frames;	/* Tx 512-1023 bytes frames   */
	u32 hnc_tx_1522_frames;	/* Tx 1024-1522 bytes frames  */
	u32 hnc_tx_9022_frames;	/* Tx 1523-9022 bytes frames  */
	u32 hnc_rx_valid_bytes;	/* Rx valid bytes             */
	u32 hnc_rx_runt_pkts;	/* Rx error runt packets      */
	u32 hnc_rx_jabber_pkts;	/* Rx error jabber packets    */
	u32 ncsi_rx_cmds;	/* Rx NCSI commands           */
	u32 ncsi_dropped_cmds;	/* Dropped commands           */
	u32 ncsi_cmd_type_errs;	/* Command type errors        */
	u32 ncsi_cmd_csum_errs;	/* Command checksum errors    */
	u32 ncsi_rx_pkts;	/* Rx NCSI packets            */
	u32 ncsi_tx_pkts;	/* Tx NCSI packets            */
	u32 ncsi_tx_aen_pkts;	/* Tx AEN packets             */
	u32 pt_tx_pkts;		/* Tx packets                 */
	u32 pt_tx_dropped;	/* Tx dropped packets         */
	u32 pt_tx_channel_err;	/* Tx channel errors          */
	u32 pt_tx_us_err;	/* Tx undersize errors        */
	u32 pt_rx_pkts;		/* Rx packets                 */
	u32 pt_rx_dropped;	/* Rx dropped packets         */
	u32 pt_rx_channel_err;	/* Rx channel errors          */
	u32 pt_rx_us_err;	/* Rx undersize errors        */
	u32 pt_rx_os_err;	/* Rx oversize errors         */
};

struct ncsi_dev_priv;
struct ncsi_package;

#define NCSI_PACKAGE_SHIFT	5
#define NCSI_PACKAGE_INDEX(c)	(((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
#define NCSI_CHANNEL_INDEX(c)	((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
#define NCSI_TO_CHANNEL(p, c)	(((p) << NCSI_PACKAGE_SHIFT) | (c))

struct ncsi_channel {
	unsigned char               id;
	int                         state;
#define NCSI_CHANNEL_INACTIVE		1
#define NCSI_CHANNEL_ACTIVE		2
#define NCSI_CHANNEL_INVISIBLE		3
	spinlock_t                  lock;	/* Protect filters etc */
	struct ncsi_package         *package;
	struct ncsi_channel_version version;
	struct ncsi_channel_cap	    caps[NCSI_CAP_MAX];
	struct ncsi_channel_mode    modes[NCSI_MODE_MAX];
	struct ncsi_channel_filter  *filters[NCSI_FILTER_MAX];
	struct ncsi_channel_stats   stats;
	struct timer_list           timer;	/* Link monitor timer  */
	bool                        enabled;	/* Timer is enabled    */
	unsigned int                timeout;	/* Times of timeout    */
	struct list_head            node;
	struct list_head            link;
};

struct ncsi_package {
	unsigned char        id;          /* NCSI 3-bits package ID */
	unsigned char        uuid[16];    /* UUID                   */
	struct ncsi_dev_priv *ndp;        /* NCSI device            */
	spinlock_t           lock;        /* Protect the package    */
	unsigned int         channel_num; /* Number of channels     */
	struct list_head     channels;    /* List of chanels        */
	struct list_head     node;        /* Form list of packages  */
};

struct ncsi_request {
	unsigned char        id;      /* Request ID - 0 to 255           */
	bool                 used;    /* Request that has been assigned  */
	bool                 driven;  /* Drive state machine             */
	struct ncsi_dev_priv *ndp;    /* Associated NCSI device          */
	struct sk_buff       *cmd;    /* Associated NCSI command packet  */
	struct sk_buff       *rsp;    /* Associated NCSI response packet */
	struct timer_list    timer;   /* Timer on waiting for response   */
	bool                 enabled; /* Time has been enabled or not    */
};

enum {
	ncsi_dev_state_major		= 0xff00,
	ncsi_dev_state_minor		= 0x00ff,
	ncsi_dev_state_probe_deselect	= 0x0201,
	ncsi_dev_state_probe_package,
	ncsi_dev_state_probe_channel,
	ncsi_dev_state_probe_cis,
	ncsi_dev_state_probe_gvi,
	ncsi_dev_state_probe_gc,
	ncsi_dev_state_probe_gls,
	ncsi_dev_state_probe_dp,
	ncsi_dev_state_config_sp	= 0x0301,
	ncsi_dev_state_config_cis,
	ncsi_dev_state_config_sma,
	ncsi_dev_state_config_ebf,
#if IS_ENABLED(CONFIG_IPV6)
	ncsi_dev_state_config_egmf,
#endif
	ncsi_dev_state_config_ecnt,
	ncsi_dev_state_config_ec,
	ncsi_dev_state_config_ae,
	ncsi_dev_state_config_gls,
	ncsi_dev_state_config_done,
	ncsi_dev_state_suspend_select	= 0x0401,
	ncsi_dev_state_suspend_dcnt,
	ncsi_dev_state_suspend_dc,
	ncsi_dev_state_suspend_deselect,
	ncsi_dev_state_suspend_done
};

struct ncsi_dev_priv {
	struct ncsi_dev     ndev;            /* Associated NCSI device     */
	unsigned int        flags;           /* NCSI device flags          */
#define NCSI_DEV_PROBED		1            /* Finalized NCSI topology    */
#define NCSI_DEV_HWA		2            /* Enabled HW arbitration     */
#define NCSI_DEV_RESHUFFLE	4
	spinlock_t          lock;            /* Protect the NCSI device    */
#if IS_ENABLED(CONFIG_IPV6)
	unsigned int        inet6_addr_num;  /* Number of IPv6 addresses   */
#endif
	unsigned int        package_num;     /* Number of packages         */
	struct list_head    packages;        /* List of packages           */
	struct ncsi_request requests[256];   /* Request table              */
	unsigned int        request_id;      /* Last used request ID       */
	unsigned int        pending_req_num; /* Number of pending requests */
	struct ncsi_package *active_package; /* Currently handled package  */
	struct ncsi_channel *active_channel; /* Currently handled channel  */
	struct list_head    channel_queue;   /* Config queue of channels   */
	struct work_struct  work;            /* For channel management     */
	struct packet_type  ptype;           /* NCSI packet Rx handler     */
	struct list_head    node;            /* Form NCSI device list      */
};

struct ncsi_cmd_arg {
	struct ncsi_dev_priv *ndp;        /* Associated NCSI device        */
	unsigned char        type;        /* Command in the NCSI packet    */
	unsigned char        id;          /* Request ID (sequence number)  */
	unsigned char        package;     /* Destination package ID        */
	unsigned char        channel;     /* Detination channel ID or 0x1f */
	unsigned short       payload;     /* Command packet payload length */
	bool                 driven;      /* Drive the state machine?      */
	union {
		unsigned char  bytes[16]; /* Command packet specific data  */
		unsigned short words[8];
		unsigned int   dwords[4];
	};
};

extern struct list_head ncsi_dev_list;
extern spinlock_t ncsi_dev_lock;

#define TO_NCSI_DEV_PRIV(nd) \
	container_of(nd, struct ncsi_dev_priv, ndev)
#define NCSI_FOR_EACH_DEV(ndp) \
	list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
#define NCSI_FOR_EACH_PACKAGE(ndp, np) \
	list_for_each_entry_rcu(np, &ndp->packages, node)
#define NCSI_FOR_EACH_CHANNEL(np, nc) \
	list_for_each_entry_rcu(nc, &np->channels, node)

/* Resources */
int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data);
int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data);
int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);
void ncsi_start_channel_monitor(struct ncsi_channel *nc);
void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
				       unsigned char id);
struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
				      unsigned char id);
struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
				       unsigned char id);
struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
				      unsigned char id);
void ncsi_remove_package(struct ncsi_package *np);
void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
				   unsigned char id,
				   struct ncsi_package **np,
				   struct ncsi_channel **nc);
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven);
void ncsi_free_request(struct ncsi_request *nr);
struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);

/* Packet handlers */
u32 ncsi_calculate_checksum(unsigned char *data, int len);
int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
		 struct packet_type *pt, struct net_device *orig_dev);

#endif /* __NCSI_INTERNAL_H__ */