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8#ifndef EFX_EFX_H
9#define EFX_EFX_H
10
11#include "net_driver.h"
12#include "filter.h"
13
14int efx_net_open(struct net_device *net_dev);
15int efx_net_stop(struct net_device *net_dev);
16
17
18int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
19void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
20void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
21void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
22void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
23netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb,
24 struct net_device *net_dev);
25netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
26void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
27int efx_setup_tc(struct net_device *net_dev, enum tc_setup_type type,
28 void *type_data);
29unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
30extern unsigned int efx_piobuf_size;
31extern bool efx_separate_tx_channels;
32
33
34void efx_set_default_rx_indir_table(struct efx_nic *efx,
35 struct efx_rss_context *ctx);
36void efx_rx_config_page_split(struct efx_nic *efx);
37int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
38void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
39void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
40void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
41void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic);
42void efx_rx_slow_fill(struct timer_list *t);
43void __efx_rx_packet(struct efx_channel *channel);
44void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
45 unsigned int n_frags, unsigned int len, u16 flags);
46static inline void efx_rx_flush_packet(struct efx_channel *channel)
47{
48 if (channel->rx_pkt_n_frags)
49 __efx_rx_packet(channel);
50}
51void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
52
53#define EFX_MAX_DMAQ_SIZE 4096UL
54#define EFX_DEFAULT_DMAQ_SIZE 1024UL
55#define EFX_MIN_DMAQ_SIZE 512UL
56
57#define EFX_MAX_EVQ_SIZE 16384UL
58#define EFX_MIN_EVQ_SIZE 512UL
59
60
61#define EFX_TSO_MAX_SEGS 100
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66
67#define EFX_RXQ_MIN_ENT 128U
68#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
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72
73#define EFX_TXQ_MAX_ENT(efx) (EFX_WORKAROUND_EF10(efx) ? \
74 EFX_MAX_DMAQ_SIZE / 2 : EFX_MAX_DMAQ_SIZE)
75
76static inline bool efx_rss_enabled(struct efx_nic *efx)
77{
78 return efx->rss_spread > 1;
79}
80
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83void efx_mac_reconfigure(struct efx_nic *efx);
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110static inline s32 efx_filter_insert_filter(struct efx_nic *efx,
111 struct efx_filter_spec *spec,
112 bool replace_equal)
113{
114 return efx->type->filter_insert(efx, spec, replace_equal);
115}
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125
126static inline int efx_filter_remove_id_safe(struct efx_nic *efx,
127 enum efx_filter_priority priority,
128 u32 filter_id)
129{
130 return efx->type->filter_remove_safe(efx, priority, filter_id);
131}
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142
143static inline int
144efx_filter_get_filter_safe(struct efx_nic *efx,
145 enum efx_filter_priority priority,
146 u32 filter_id, struct efx_filter_spec *spec)
147{
148 return efx->type->filter_get_safe(efx, priority, filter_id, spec);
149}
150
151static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
152 enum efx_filter_priority priority)
153{
154 return efx->type->filter_count_rx_used(efx, priority);
155}
156static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
157{
158 return efx->type->filter_get_rx_id_limit(efx);
159}
160static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
161 enum efx_filter_priority priority,
162 u32 *buf, u32 size)
163{
164 return efx->type->filter_get_rx_ids(efx, priority, buf, size);
165}
166#ifdef CONFIG_RFS_ACCEL
167int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
168 u16 rxq_index, u32 flow_id);
169bool __efx_filter_rfs_expire(struct efx_channel *channel, unsigned int quota);
170static inline void efx_filter_rfs_expire(struct work_struct *data)
171{
172 struct delayed_work *dwork = to_delayed_work(data);
173 struct efx_channel *channel;
174 unsigned int time, quota;
175
176 channel = container_of(dwork, struct efx_channel, filter_work);
177 time = jiffies - channel->rfs_last_expiry;
178 quota = channel->rfs_filter_count * time / (30 * HZ);
179 if (quota > 20 && __efx_filter_rfs_expire(channel, min(channel->rfs_filter_count, quota)))
180 channel->rfs_last_expiry += time;
181
182 schedule_delayed_work(dwork, 30 * HZ);
183}
184#define efx_filter_rfs_enabled() 1
185#else
186static inline void efx_filter_rfs_expire(struct work_struct *data) {}
187#define efx_filter_rfs_enabled() 0
188#endif
189bool efx_filter_is_mc_recipient(const struct efx_filter_spec *spec);
190
191bool efx_filter_spec_equal(const struct efx_filter_spec *left,
192 const struct efx_filter_spec *right);
193u32 efx_filter_spec_hash(const struct efx_filter_spec *spec);
194
195#ifdef CONFIG_RFS_ACCEL
196bool efx_rps_check_rule(struct efx_arfs_rule *rule, unsigned int filter_idx,
197 bool *force);
198
199struct efx_arfs_rule *efx_rps_hash_find(struct efx_nic *efx,
200 const struct efx_filter_spec *spec);
201
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205struct efx_arfs_rule *efx_rps_hash_add(struct efx_nic *efx,
206 const struct efx_filter_spec *spec,
207 bool *new);
208
209void efx_rps_hash_del(struct efx_nic *efx, const struct efx_filter_spec *spec);
210#endif
211
212
213struct efx_rss_context *efx_alloc_rss_context_entry(struct efx_nic *efx);
214struct efx_rss_context *efx_find_rss_context_entry(struct efx_nic *efx, u32 id);
215void efx_free_rss_context_entry(struct efx_rss_context *ctx);
216static inline bool efx_rss_active(struct efx_rss_context *ctx)
217{
218 return ctx->context_id != EFX_EF10_RSS_CONTEXT_INVALID;
219}
220
221
222int efx_channel_dummy_op_int(struct efx_channel *channel);
223void efx_channel_dummy_op_void(struct efx_channel *channel);
224int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
225
226
227int efx_reconfigure_port(struct efx_nic *efx);
228int __efx_reconfigure_port(struct efx_nic *efx);
229
230
231extern const struct ethtool_ops efx_ethtool_ops;
232
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234int efx_reset(struct efx_nic *efx, enum reset_type method);
235void efx_reset_down(struct efx_nic *efx, enum reset_type method);
236int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
237int efx_try_recovery(struct efx_nic *efx);
238
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240void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
241unsigned int efx_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs);
242unsigned int efx_ticks_to_usecs(struct efx_nic *efx, unsigned int ticks);
243int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
244 unsigned int rx_usecs, bool rx_adaptive,
245 bool rx_may_override_tx);
246void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
247 unsigned int *rx_usecs, bool *rx_adaptive);
248void efx_stop_eventq(struct efx_channel *channel);
249void efx_start_eventq(struct efx_channel *channel);
250
251
252int efx_port_dummy_op_int(struct efx_nic *efx);
253void efx_port_dummy_op_void(struct efx_nic *efx);
254
255
256void efx_update_sw_stats(struct efx_nic *efx, u64 *stats);
257
258
259#ifdef CONFIG_SFC_MTD
260int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
261 size_t n_parts, size_t sizeof_part);
262static inline int efx_mtd_probe(struct efx_nic *efx)
263{
264 return efx->type->mtd_probe(efx);
265}
266void efx_mtd_rename(struct efx_nic *efx);
267void efx_mtd_remove(struct efx_nic *efx);
268#else
269static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
270static inline void efx_mtd_rename(struct efx_nic *efx) {}
271static inline void efx_mtd_remove(struct efx_nic *efx) {}
272#endif
273
274#ifdef CONFIG_SFC_SRIOV
275static inline unsigned int efx_vf_size(struct efx_nic *efx)
276{
277 return 1 << efx->vi_scale;
278}
279#endif
280
281static inline void efx_schedule_channel(struct efx_channel *channel)
282{
283 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
284 "channel %d scheduling NAPI poll on CPU%d\n",
285 channel->channel, raw_smp_processor_id());
286
287 napi_schedule(&channel->napi_str);
288}
289
290static inline void efx_schedule_channel_irq(struct efx_channel *channel)
291{
292 channel->event_test_cpu = raw_smp_processor_id();
293 efx_schedule_channel(channel);
294}
295
296void efx_link_status_changed(struct efx_nic *efx);
297void efx_link_set_advertising(struct efx_nic *efx,
298 const unsigned long *advertising);
299void efx_link_clear_advertising(struct efx_nic *efx);
300void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
301
302static inline void efx_device_detach_sync(struct efx_nic *efx)
303{
304 struct net_device *dev = efx->net_dev;
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307
308
309
310 netif_tx_lock_bh(dev);
311 netif_device_detach(dev);
312 netif_tx_unlock_bh(dev);
313}
314
315static inline void efx_device_attach_if_not_resetting(struct efx_nic *efx)
316{
317 if ((efx->state != STATE_DISABLED) && !efx->reset_pending)
318 netif_device_attach(efx->net_dev);
319}
320
321static inline bool efx_rwsem_assert_write_locked(struct rw_semaphore *sem)
322{
323 if (WARN_ON(down_read_trylock(sem))) {
324 up_read(sem);
325 return false;
326 }
327 return true;
328}
329
330int efx_xdp_tx_buffers(struct efx_nic *efx, int n, struct xdp_frame **xdpfs,
331 bool flush);
332
333#endif
334