xref: /linux/drivers/net/ethernet/intel/fm10k/fm10k.h (revision 6832a9317eee280117cd695fa885b2b7a7a38daf)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
3 
4 #ifndef _FM10K_H_
5 #define _FM10K_H_
6 
7 #include <linux/types.h>
8 #include <linux/etherdevice.h>
9 #include <linux/cpumask.h>
10 #include <linux/rtnetlink.h>
11 #include <linux/if_vlan.h>
12 #include <linux/pci.h>
13 
14 #include "fm10k_pf.h"
15 #include "fm10k_vf.h"
16 
17 #define FM10K_MAX_JUMBO_FRAME_SIZE	15342	/* Maximum supported size 15K */
18 
19 #define MAX_QUEUES	FM10K_MAX_QUEUES_PF
20 
21 #define FM10K_MIN_RXD		 128
22 #define FM10K_MAX_RXD		4096
23 #define FM10K_DEFAULT_RXD	 256
24 
25 #define FM10K_MIN_TXD		 128
26 #define FM10K_MAX_TXD		4096
27 #define FM10K_DEFAULT_TXD	 256
28 #define FM10K_DEFAULT_TX_WORK	 256
29 
30 #define FM10K_RXBUFFER_256	  256
31 #define FM10K_RX_HDR_LEN	FM10K_RXBUFFER_256
32 #define FM10K_RXBUFFER_2048	 2048
33 #define FM10K_RX_BUFSZ		FM10K_RXBUFFER_2048
34 
35 /* How many Rx Buffers do we bundle into one write to the hardware ? */
36 #define FM10K_RX_BUFFER_WRITE	16	/* Must be power of 2 */
37 
38 #define FM10K_MAX_STATIONS	63
39 struct fm10k_l2_accel {
40 	int size;
41 	u16 count;
42 	u16 dglort;
43 	struct rcu_head rcu;
44 	struct net_device *macvlan[];
45 };
46 
47 enum fm10k_ring_state_t {
48 	__FM10K_TX_DETECT_HANG,
49 	__FM10K_HANG_CHECK_ARMED,
50 	__FM10K_TX_XPS_INIT_DONE,
51 	/* This must be last and is used to calculate BITMAP size */
52 	__FM10K_TX_STATE_SIZE__,
53 };
54 
55 #define check_for_tx_hang(ring) \
56 	test_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
57 #define set_check_for_tx_hang(ring) \
58 	set_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
59 #define clear_check_for_tx_hang(ring) \
60 	clear_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
61 
62 struct fm10k_tx_buffer {
63 	struct fm10k_tx_desc *next_to_watch;
64 	struct sk_buff *skb;
65 	unsigned int bytecount;
66 	u16 gso_segs;
67 	u16 tx_flags;
68 	DEFINE_DMA_UNMAP_ADDR(dma);
69 	DEFINE_DMA_UNMAP_LEN(len);
70 };
71 
72 struct fm10k_rx_buffer {
73 	dma_addr_t dma;
74 	struct page *page;
75 	u32 page_offset;
76 };
77 
78 struct fm10k_queue_stats {
79 	u64 packets;
80 	u64 bytes;
81 };
82 
83 struct fm10k_tx_queue_stats {
84 	u64 restart_queue;
85 	u64 csum_err;
86 	u64 tx_busy;
87 	u64 tx_done_old;
88 	u64 csum_good;
89 };
90 
91 struct fm10k_rx_queue_stats {
92 	u64 alloc_failed;
93 	u64 csum_err;
94 	u64 errors;
95 	u64 csum_good;
96 	u64 switch_errors;
97 	u64 drops;
98 	u64 pp_errors;
99 	u64 link_errors;
100 	u64 length_errors;
101 };
102 
103 struct fm10k_ring {
104 	struct fm10k_q_vector *q_vector;/* backpointer to host q_vector */
105 	struct net_device *netdev;	/* netdev ring belongs to */
106 	struct device *dev;		/* device for DMA mapping */
107 	struct fm10k_l2_accel __rcu *l2_accel;	/* L2 acceleration list */
108 	void *desc;			/* descriptor ring memory */
109 	union {
110 		struct fm10k_tx_buffer *tx_buffer;
111 		struct fm10k_rx_buffer *rx_buffer;
112 	};
113 	u32 __iomem *tail;
114 	DECLARE_BITMAP(state, __FM10K_TX_STATE_SIZE__);
115 	dma_addr_t dma;			/* phys. address of descriptor ring */
116 	unsigned int size;		/* length in bytes */
117 
118 	u8 queue_index;			/* needed for queue management */
119 	u8 reg_idx;			/* holds the special value that gets
120 					 * the hardware register offset
121 					 * associated with this ring, which is
122 					 * different for DCB and RSS modes
123 					 */
124 	u8 qos_pc;			/* priority class of queue */
125 	u16 vid;			/* default VLAN ID of queue */
126 	u16 count;			/* amount of descriptors */
127 
128 	u16 next_to_alloc;
129 	u16 next_to_use;
130 	u16 next_to_clean;
131 
132 	struct fm10k_queue_stats stats;
133 	struct u64_stats_sync syncp;
134 	union {
135 		/* Tx */
136 		struct fm10k_tx_queue_stats tx_stats;
137 		/* Rx */
138 		struct {
139 			struct fm10k_rx_queue_stats rx_stats;
140 			struct sk_buff *skb;
141 		};
142 	};
143 } ____cacheline_internodealigned_in_smp;
144 
145 struct fm10k_ring_container {
146 	struct fm10k_ring *ring;	/* pointer to linked list of rings */
147 	unsigned int total_bytes;	/* total bytes processed this int */
148 	unsigned int total_packets;	/* total packets processed this int */
149 	u16 work_limit;			/* total work allowed per interrupt */
150 	u16 itr;			/* interrupt throttle rate value */
151 	u8 itr_scale;			/* ITR adjustment based on PCI speed */
152 	u8 count;			/* total number of rings in vector */
153 };
154 
155 #define FM10K_ITR_MAX		0x0FFF	/* maximum value for ITR */
156 #define FM10K_ITR_10K		100	/* 100us */
157 #define FM10K_ITR_20K		50	/* 50us */
158 #define FM10K_ITR_40K		25	/* 25us */
159 #define FM10K_ITR_ADAPTIVE	0x8000	/* adaptive interrupt moderation flag */
160 
161 #define ITR_IS_ADAPTIVE(itr) (!!(itr & FM10K_ITR_ADAPTIVE))
162 
163 #define FM10K_TX_ITR_DEFAULT	FM10K_ITR_40K
164 #define FM10K_RX_ITR_DEFAULT	FM10K_ITR_20K
165 #define FM10K_ITR_ENABLE	(FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR)
166 
txring_txq(const struct fm10k_ring * ring)167 static inline struct netdev_queue *txring_txq(const struct fm10k_ring *ring)
168 {
169 	return &ring->netdev->_tx[ring->queue_index];
170 }
171 
172 /* iterator for handling rings in ring container */
173 #define fm10k_for_each_ring(pos, head) \
174 	for (pos = &(head).ring[(head).count]; (--pos) >= (head).ring;)
175 
176 #define MAX_Q_VECTORS 256
177 #define MIN_Q_VECTORS	1
178 enum fm10k_non_q_vectors {
179 	FM10K_MBX_VECTOR,
180 	NON_Q_VECTORS
181 };
182 
183 #define MIN_MSIX_COUNT(hw)	(MIN_Q_VECTORS + NON_Q_VECTORS)
184 
185 struct fm10k_q_vector {
186 	struct fm10k_intfc *interface;
187 	u32 __iomem *itr;	/* pointer to ITR register for this vector */
188 	u16 v_idx;		/* index of q_vector within interface array */
189 	struct fm10k_ring_container rx, tx;
190 
191 	struct napi_struct napi;
192 	struct rcu_head rcu;	/* to avoid race with update stats on free */
193 
194 	cpumask_t affinity_mask;
195 	char name[IFNAMSIZ + 9];
196 
197 #ifdef CONFIG_DEBUG_FS
198 	struct dentry *dbg_q_vector;
199 #endif /* CONFIG_DEBUG_FS */
200 
201 	/* for dynamic allocation of rings associated with this q_vector */
202 	struct fm10k_ring ring[] ____cacheline_internodealigned_in_smp;
203 };
204 
205 enum fm10k_ring_f_enum {
206 	RING_F_RSS,
207 	RING_F_QOS,
208 	RING_F_ARRAY_SIZE  /* must be last in enum set */
209 };
210 
211 struct fm10k_ring_feature {
212 	u16 limit;	/* upper limit on feature indices */
213 	u16 indices;	/* current value of indices */
214 	u16 mask;	/* Mask used for feature to ring mapping */
215 	u16 offset;	/* offset to start of feature */
216 };
217 
218 struct fm10k_iov_data {
219 	unsigned int		num_vfs;
220 	unsigned int		next_vf_mbx;
221 	struct rcu_head		rcu;
222 	struct fm10k_vf_info	vf_info[];
223 };
224 
225 enum fm10k_macvlan_request_type {
226 	FM10K_UC_MAC_REQUEST,
227 	FM10K_MC_MAC_REQUEST,
228 	FM10K_VLAN_REQUEST
229 };
230 
231 struct fm10k_macvlan_request {
232 	enum fm10k_macvlan_request_type type;
233 	struct list_head list;
234 	union {
235 		struct fm10k_mac_request {
236 			u8 addr[ETH_ALEN];
237 			u16 glort;
238 			u16 vid;
239 		} mac;
240 		struct fm10k_vlan_request {
241 			u32 vid;
242 			u8 vsi;
243 		} vlan;
244 	};
245 	bool set;
246 };
247 
248 /* one work queue for entire driver */
249 extern struct workqueue_struct *fm10k_workqueue;
250 
251 /* The following enumeration contains flags which indicate or enable modified
252  * driver behaviors. To avoid race conditions, the flags are stored in
253  * a BITMAP in the fm10k_intfc structure. The BITMAP should be accessed using
254  * atomic *_bit() operations.
255  */
256 enum fm10k_flags_t {
257 	FM10K_FLAG_RESET_REQUESTED,
258 	FM10K_FLAG_RSS_FIELD_IPV4_UDP,
259 	FM10K_FLAG_RSS_FIELD_IPV6_UDP,
260 	FM10K_FLAG_SWPRI_CONFIG,
261 	/* __FM10K_FLAGS_SIZE__ is used to calculate the size of
262 	 * interface->flags and must be the last value in this
263 	 * enumeration.
264 	 */
265 	__FM10K_FLAGS_SIZE__
266 };
267 
268 enum fm10k_state_t {
269 	__FM10K_RESETTING,
270 	__FM10K_RESET_DETACHED,
271 	__FM10K_RESET_SUSPENDED,
272 	__FM10K_DOWN,
273 	__FM10K_SERVICE_SCHED,
274 	__FM10K_SERVICE_REQUEST,
275 	__FM10K_SERVICE_DISABLE,
276 	__FM10K_MACVLAN_SCHED,
277 	__FM10K_MACVLAN_REQUEST,
278 	__FM10K_MACVLAN_DISABLE,
279 	__FM10K_LINK_DOWN,
280 	__FM10K_UPDATING_STATS,
281 	/* This value must be last and determines the BITMAP size */
282 	__FM10K_STATE_SIZE__,
283 };
284 
285 struct fm10k_intfc {
286 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
287 	struct net_device *netdev;
288 	struct fm10k_l2_accel *l2_accel; /* pointer to L2 acceleration list */
289 	struct pci_dev *pdev;
290 	DECLARE_BITMAP(state, __FM10K_STATE_SIZE__);
291 
292 	/* Access flag values using atomic *_bit() operations */
293 	DECLARE_BITMAP(flags, __FM10K_FLAGS_SIZE__);
294 
295 	int xcast_mode;
296 
297 	/* Tx fast path data */
298 	int num_tx_queues;
299 	u16 tx_itr;
300 
301 	/* Rx fast path data */
302 	int num_rx_queues;
303 	u16 rx_itr;
304 
305 	/* TX */
306 	struct fm10k_ring *tx_ring[MAX_QUEUES] ____cacheline_aligned_in_smp;
307 
308 	u64 restart_queue;
309 	u64 tx_busy;
310 	u64 tx_csum_errors;
311 	u64 alloc_failed;
312 	u64 rx_csum_errors;
313 
314 	u64 tx_bytes_nic;
315 	u64 tx_packets_nic;
316 	u64 rx_bytes_nic;
317 	u64 rx_packets_nic;
318 	u64 rx_drops_nic;
319 	u64 rx_overrun_pf;
320 	u64 rx_overrun_vf;
321 
322 	/* Debug Statistics */
323 	u64 hw_sm_mbx_full;
324 	u64 hw_csum_tx_good;
325 	u64 hw_csum_rx_good;
326 	u64 rx_switch_errors;
327 	u64 rx_drops;
328 	u64 rx_pp_errors;
329 	u64 rx_link_errors;
330 	u64 rx_length_errors;
331 
332 	u32 tx_timeout_count;
333 
334 	/* RX */
335 	struct fm10k_ring *rx_ring[MAX_QUEUES];
336 
337 	/* Queueing vectors */
338 	struct fm10k_q_vector *q_vector[MAX_Q_VECTORS];
339 	struct msix_entry *msix_entries;
340 	int num_q_vectors;	/* current number of q_vectors for device */
341 	struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE];
342 
343 	/* SR-IOV information management structure */
344 	struct fm10k_iov_data *iov_data;
345 
346 	struct fm10k_hw_stats stats;
347 	struct fm10k_hw hw;
348 	/* Mailbox lock */
349 	spinlock_t mbx_lock;
350 	u32 __iomem *uc_addr;
351 	u32 __iomem *sw_addr;
352 	u16 msg_enable;
353 	u16 tx_ring_count;
354 	u16 rx_ring_count;
355 	struct timer_list service_timer;
356 	struct work_struct service_task;
357 	unsigned long next_stats_update;
358 	unsigned long next_tx_hang_check;
359 	unsigned long last_reset;
360 	unsigned long link_down_event;
361 	bool host_ready;
362 	bool lport_map_failed;
363 
364 	u32 reta[FM10K_RETA_SIZE];
365 	u32 rssrk[FM10K_RSSRK_SIZE];
366 
367 	/* UDP encapsulation port tracking information */
368 	__be16 vxlan_port;
369 	__be16 geneve_port;
370 
371 	/* MAC/VLAN update queue */
372 	struct list_head macvlan_requests;
373 	struct delayed_work macvlan_task;
374 	/* MAC/VLAN update queue lock */
375 	spinlock_t macvlan_lock;
376 
377 #ifdef CONFIG_DEBUG_FS
378 	struct dentry *dbg_intfc;
379 #endif /* CONFIG_DEBUG_FS */
380 
381 #ifdef CONFIG_DCB
382 	u8 pfc_en;
383 #endif
384 	u8 rx_pause;
385 
386 	/* GLORT resources in use by PF */
387 	u16 glort;
388 	u16 glort_count;
389 
390 	/* VLAN ID for updating multicast/unicast lists */
391 	u16 vid;
392 };
393 
fm10k_mbx_lock(struct fm10k_intfc * interface)394 static inline void fm10k_mbx_lock(struct fm10k_intfc *interface)
395 {
396 	spin_lock(&interface->mbx_lock);
397 }
398 
fm10k_mbx_unlock(struct fm10k_intfc * interface)399 static inline void fm10k_mbx_unlock(struct fm10k_intfc *interface)
400 {
401 	spin_unlock(&interface->mbx_lock);
402 }
403 
fm10k_mbx_trylock(struct fm10k_intfc * interface)404 static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface)
405 {
406 	return spin_trylock(&interface->mbx_lock);
407 }
408 
409 /* fm10k_test_staterr - test bits in Rx descriptor status and error fields */
fm10k_test_staterr(union fm10k_rx_desc * rx_desc,const u32 stat_err_bits)410 static inline __le32 fm10k_test_staterr(union fm10k_rx_desc *rx_desc,
411 					const u32 stat_err_bits)
412 {
413 	return rx_desc->d.staterr & cpu_to_le32(stat_err_bits);
414 }
415 
416 /* fm10k_desc_unused - calculate if we have unused descriptors */
fm10k_desc_unused(struct fm10k_ring * ring)417 static inline u16 fm10k_desc_unused(struct fm10k_ring *ring)
418 {
419 	s16 unused = ring->next_to_clean - ring->next_to_use - 1;
420 
421 	return likely(unused < 0) ? unused + ring->count : unused;
422 }
423 
424 #define FM10K_TX_DESC(R, i)	\
425 	(&(((struct fm10k_tx_desc *)((R)->desc))[i]))
426 #define FM10K_RX_DESC(R, i)	\
427 	 (&(((union fm10k_rx_desc *)((R)->desc))[i]))
428 
429 #define FM10K_MAX_TXD_PWR	14
430 #define FM10K_MAX_DATA_PER_TXD	(1u << FM10K_MAX_TXD_PWR)
431 
432 /* Tx Descriptors needed, worst case */
433 #define TXD_USE_COUNT(S)	DIV_ROUND_UP((S), FM10K_MAX_DATA_PER_TXD)
434 #define DESC_NEEDED	(MAX_SKB_FRAGS + 4)
435 
436 enum fm10k_tx_flags {
437 	/* Tx offload flags */
438 	FM10K_TX_FLAGS_CSUM	= 0x01,
439 };
440 
441 /* This structure is stored as little endian values as that is the native
442  * format of the Rx descriptor.  The ordering of these fields is reversed
443  * from the actual ftag header to allow for a single bswap to take care
444  * of placing all of the values in network order
445  */
446 union fm10k_ftag_info {
447 	__le64 ftag;
448 	struct {
449 		/* dglort and sglort combined into a single 32bit desc read */
450 		__le32 glort;
451 		/* upper 16 bits of VLAN are reserved 0 for swpri_type_user */
452 		__le32 vlan;
453 	} d;
454 	struct {
455 		__le16 dglort;
456 		__le16 sglort;
457 		__le16 vlan;
458 		__le16 swpri_type_user;
459 	} w;
460 };
461 
462 struct fm10k_cb {
463 	union {
464 		__le64 tstamp;
465 		unsigned long ts_tx_timeout;
466 	};
467 	union fm10k_ftag_info fi;
468 };
469 
470 #define FM10K_CB(skb) ((struct fm10k_cb *)(skb)->cb)
471 
472 /* main */
473 extern char fm10k_driver_name[];
474 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface);
475 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface);
476 __be16 fm10k_tx_encap_offload(struct sk_buff *skb);
477 netdev_tx_t fm10k_xmit_frame_ring(struct sk_buff *skb,
478 				  struct fm10k_ring *tx_ring);
479 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface);
480 u64 fm10k_get_tx_pending(struct fm10k_ring *ring, bool in_sw);
481 bool fm10k_check_tx_hang(struct fm10k_ring *tx_ring);
482 void fm10k_alloc_rx_buffers(struct fm10k_ring *rx_ring, u16 cleaned_count);
483 
484 /* PCI */
485 void fm10k_mbx_free_irq(struct fm10k_intfc *);
486 int fm10k_mbx_request_irq(struct fm10k_intfc *);
487 void fm10k_qv_free_irq(struct fm10k_intfc *interface);
488 int fm10k_qv_request_irq(struct fm10k_intfc *interface);
489 int fm10k_register_pci_driver(void);
490 void fm10k_unregister_pci_driver(void);
491 void fm10k_up(struct fm10k_intfc *interface);
492 void fm10k_down(struct fm10k_intfc *interface);
493 void fm10k_update_stats(struct fm10k_intfc *interface);
494 void fm10k_service_event_schedule(struct fm10k_intfc *interface);
495 void fm10k_macvlan_schedule(struct fm10k_intfc *interface);
496 void fm10k_update_rx_drop_en(struct fm10k_intfc *interface);
497 
498 /* Netdev */
499 struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info);
500 int fm10k_setup_rx_resources(struct fm10k_ring *);
501 int fm10k_setup_tx_resources(struct fm10k_ring *);
502 void fm10k_free_rx_resources(struct fm10k_ring *);
503 void fm10k_free_tx_resources(struct fm10k_ring *);
504 void fm10k_clean_all_rx_rings(struct fm10k_intfc *);
505 void fm10k_clean_all_tx_rings(struct fm10k_intfc *);
506 void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *,
507 				      struct fm10k_tx_buffer *);
508 void fm10k_restore_rx_state(struct fm10k_intfc *);
509 void fm10k_reset_rx_state(struct fm10k_intfc *);
510 int fm10k_setup_tc(struct net_device *dev, u8 tc);
511 int fm10k_open(struct net_device *netdev);
512 int fm10k_close(struct net_device *netdev);
513 int fm10k_queue_vlan_request(struct fm10k_intfc *interface, u32 vid,
514 			     u8 vsi, bool set);
515 int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort,
516 			    const unsigned char *addr, u16 vid, bool set);
517 void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface,
518 			       u16 glort, bool vlans);
519 
520 /* Ethtool */
521 void fm10k_set_ethtool_ops(struct net_device *dev);
522 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir);
523 
524 /* IOV */
525 s32 fm10k_iov_event(struct fm10k_intfc *interface);
526 s32 fm10k_iov_mbx(struct fm10k_intfc *interface);
527 void fm10k_iov_suspend(struct pci_dev *pdev);
528 int fm10k_iov_resume(struct pci_dev *pdev);
529 void fm10k_iov_disable(struct pci_dev *pdev);
530 int fm10k_iov_configure(struct pci_dev *pdev, int num_vfs);
531 void fm10k_iov_update_stats(struct fm10k_intfc *interface);
532 s32 fm10k_iov_update_pvid(struct fm10k_intfc *interface, u16 glort, u16 pvid);
533 int fm10k_ndo_set_vf_mac(struct net_device *netdev, int vf_idx, u8 *mac);
534 int fm10k_ndo_set_vf_vlan(struct net_device *netdev,
535 			  int vf_idx, u16 vid, u8 qos, __be16 vlan_proto);
536 int fm10k_ndo_set_vf_bw(struct net_device *netdev, int vf_idx,
537 			int __always_unused min_rate, int max_rate);
538 int fm10k_ndo_get_vf_config(struct net_device *netdev,
539 			    int vf_idx, struct ifla_vf_info *ivi);
540 int fm10k_ndo_get_vf_stats(struct net_device *netdev,
541 			   int vf_idx, struct ifla_vf_stats *stats);
542 
543 /* DebugFS */
544 #ifdef CONFIG_DEBUG_FS
545 void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector);
546 void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector);
547 void fm10k_dbg_intfc_init(struct fm10k_intfc *interface);
548 void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface);
549 void fm10k_dbg_init(void);
550 void fm10k_dbg_exit(void);
551 #else
fm10k_dbg_q_vector_init(struct fm10k_q_vector * q_vector)552 static inline void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector) {}
fm10k_dbg_q_vector_exit(struct fm10k_q_vector * q_vector)553 static inline void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector) {}
fm10k_dbg_intfc_init(struct fm10k_intfc * interface)554 static inline void fm10k_dbg_intfc_init(struct fm10k_intfc *interface) {}
fm10k_dbg_intfc_exit(struct fm10k_intfc * interface)555 static inline void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface) {}
fm10k_dbg_init(void)556 static inline void fm10k_dbg_init(void) {}
fm10k_dbg_exit(void)557 static inline void fm10k_dbg_exit(void) {}
558 #endif /* CONFIG_DEBUG_FS */
559 
560 /* DCB */
561 #ifdef CONFIG_DCB
562 void fm10k_dcbnl_set_ops(struct net_device *dev);
563 #else
fm10k_dcbnl_set_ops(struct net_device * dev)564 static inline void fm10k_dcbnl_set_ops(struct net_device *dev) {}
565 #endif
566 #endif /* _FM10K_H_ */
567