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
|
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2013 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_EFX_H
#define EFX_EFX_H
#include "net_driver.h"
#include "filter.h"
/* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
/* All VFs use BAR 0/1 for memory */
#define EFX_MEM_BAR 2
#define EFX_MEM_VF_BAR 0
int efx_net_open(struct net_device *net_dev);
int efx_net_stop(struct net_device *net_dev);
/* TX */
int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb,
struct net_device *net_dev);
netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
int efx_setup_tc(struct net_device *net_dev, u32 handle, __be16 proto,
struct tc_to_netdev *tc);
unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
extern unsigned int efx_piobuf_size;
extern bool efx_separate_tx_channels;
/* RX */
void efx_set_default_rx_indir_table(struct efx_nic *efx);
void efx_rx_config_page_split(struct efx_nic *efx);
int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic);
void efx_rx_slow_fill(unsigned long context);
void __efx_rx_packet(struct efx_channel *channel);
void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
unsigned int n_frags, unsigned int len, u16 flags);
static inline void efx_rx_flush_packet(struct efx_channel *channel)
{
if (channel->rx_pkt_n_frags)
__efx_rx_packet(channel);
}
void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
#define EFX_MAX_DMAQ_SIZE 4096UL
#define EFX_DEFAULT_DMAQ_SIZE 1024UL
#define EFX_MIN_DMAQ_SIZE 512UL
#define EFX_MAX_EVQ_SIZE 16384UL
#define EFX_MIN_EVQ_SIZE 512UL
/* Maximum number of TCP segments we support for soft-TSO */
#define EFX_TSO_MAX_SEGS 100
/* The smallest [rt]xq_entries that the driver supports. RX minimum
* is a bit arbitrary. For TX, we must have space for at least 2
* TSO skbs.
*/
#define EFX_RXQ_MIN_ENT 128U
#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
#define EFX_TXQ_MAX_ENT(efx) (EFX_WORKAROUND_35388(efx) ? \
EFX_MAX_DMAQ_SIZE / 2 : EFX_MAX_DMAQ_SIZE)
static inline bool efx_rss_enabled(struct efx_nic *efx)
{
return efx->rss_spread > 1;
}
/* Filters */
void efx_mac_reconfigure(struct efx_nic *efx);
/**
* efx_filter_insert_filter - add or replace a filter
* @efx: NIC in which to insert the filter
* @spec: Specification for the filter
* @replace_equal: Flag for whether the specified filter may replace an
* existing filter with equal priority
*
* On success, return the filter ID.
* On failure, return a negative error code.
*
* If existing filters have equal match values to the new filter spec,
* then the new filter might replace them or the function might fail,
* as follows.
*
* 1. If the existing filters have lower priority, or @replace_equal
* is set and they have equal priority, replace them.
*
* 2. If the existing filters have higher priority, return -%EPERM.
*
* 3. If !efx_filter_is_mc_recipient(@spec), or the NIC does not
* support delivery to multiple recipients, return -%EEXIST.
*
* This implies that filters for multiple multicast recipients must
* all be inserted with the same priority and @replace_equal = %false.
*/
static inline s32 efx_filter_insert_filter(struct efx_nic *efx,
struct efx_filter_spec *spec,
bool replace_equal)
{
return efx->type->filter_insert(efx, spec, replace_equal);
}
/**
* efx_filter_remove_id_safe - remove a filter by ID, carefully
* @efx: NIC from which to remove the filter
* @priority: Priority of filter, as passed to @efx_filter_insert_filter
* @filter_id: ID of filter, as returned by @efx_filter_insert_filter
*
* This function will range-check @filter_id, so it is safe to call
* with a value passed from userland.
*/
static inline int efx_filter_remove_id_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id)
{
return efx->type->filter_remove_safe(efx, priority, filter_id);
}
/**
* efx_filter_get_filter_safe - retrieve a filter by ID, carefully
* @efx: NIC from which to remove the filter
* @priority: Priority of filter, as passed to @efx_filter_insert_filter
* @filter_id: ID of filter, as returned by @efx_filter_insert_filter
* @spec: Buffer in which to store filter specification
*
* This function will range-check @filter_id, so it is safe to call
* with a value passed from userland.
*/
static inline int
efx_filter_get_filter_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id, struct efx_filter_spec *spec)
{
return efx->type->filter_get_safe(efx, priority, filter_id, spec);
}
static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
enum efx_filter_priority priority)
{
return efx->type->filter_count_rx_used(efx, priority);
}
static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
{
return efx->type->filter_get_rx_id_limit(efx);
}
static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 *buf, u32 size)
{
return efx->type->filter_get_rx_ids(efx, priority, buf, size);
}
#ifdef CONFIG_RFS_ACCEL
int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id);
bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
static inline void efx_filter_rfs_expire(struct efx_channel *channel)
{
if (channel->rfs_filters_added >= 60 &&
__efx_filter_rfs_expire(channel->efx, 100))
channel->rfs_filters_added -= 60;
}
#define efx_filter_rfs_enabled() 1
#else
static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
#define efx_filter_rfs_enabled() 0
#endif
bool efx_filter_is_mc_recipient(const struct efx_filter_spec *spec);
/* Channels */
int efx_channel_dummy_op_int(struct efx_channel *channel);
void efx_channel_dummy_op_void(struct efx_channel *channel);
int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
/* Ports */
int efx_reconfigure_port(struct efx_nic *efx);
int __efx_reconfigure_port(struct efx_nic *efx);
/* Ethtool support */
extern const struct ethtool_ops efx_ethtool_ops;
/* Reset handling */
int efx_reset(struct efx_nic *efx, enum reset_type method);
void efx_reset_down(struct efx_nic *efx, enum reset_type method);
int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
int efx_try_recovery(struct efx_nic *efx);
/* Global */
void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
unsigned int rx_usecs, bool rx_adaptive,
bool rx_may_override_tx);
void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
unsigned int *rx_usecs, bool *rx_adaptive);
void efx_stop_eventq(struct efx_channel *channel);
void efx_start_eventq(struct efx_channel *channel);
/* Dummy PHY ops for PHY drivers */
int efx_port_dummy_op_int(struct efx_nic *efx);
void efx_port_dummy_op_void(struct efx_nic *efx);
/* Update the generic software stats in the passed stats array */
void efx_update_sw_stats(struct efx_nic *efx, u64 *stats);
/* MTD */
#ifdef CONFIG_SFC_MTD
int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
size_t n_parts, size_t sizeof_part);
static inline int efx_mtd_probe(struct efx_nic *efx)
{
return efx->type->mtd_probe(efx);
}
void efx_mtd_rename(struct efx_nic *efx);
void efx_mtd_remove(struct efx_nic *efx);
#else
static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
static inline void efx_mtd_rename(struct efx_nic *efx) {}
static inline void efx_mtd_remove(struct efx_nic *efx) {}
#endif
#ifdef CONFIG_SFC_SRIOV
static inline unsigned int efx_vf_size(struct efx_nic *efx)
{
return 1 << efx->vi_scale;
}
#endif
static inline void efx_schedule_channel(struct efx_channel *channel)
{
netif_vdbg(channel->efx, intr, channel->efx->net_dev,
"channel %d scheduling NAPI poll on CPU%d\n",
channel->channel, raw_smp_processor_id());
napi_schedule(&channel->napi_str);
}
static inline void efx_schedule_channel_irq(struct efx_channel *channel)
{
channel->event_test_cpu = raw_smp_processor_id();
efx_schedule_channel(channel);
}
void efx_link_status_changed(struct efx_nic *efx);
void efx_link_set_advertising(struct efx_nic *efx, u32);
void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
static inline void efx_device_detach_sync(struct efx_nic *efx)
{
struct net_device *dev = efx->net_dev;
/* Lock/freeze all TX queues so that we can be sure the
* TX scheduler is stopped when we're done and before
* netif_device_present() becomes false.
*/
netif_tx_lock_bh(dev);
netif_device_detach(dev);
netif_tx_unlock_bh(dev);
}
#endif /* EFX_EFX_H */
|
