1 /* SPDX-License-Identifier: GPL-2.0+ */
2 // Copyright (c) 2016-2017 Hisilicon Limited.
3 
4 #ifndef __HNS3_ENET_H
5 #define __HNS3_ENET_H
6 
7 #include <linux/if_vlan.h>
8 
9 #include "hnae3.h"
10 
11 enum hns3_nic_state {
12 	HNS3_NIC_STATE_TESTING,
13 	HNS3_NIC_STATE_RESETTING,
14 	HNS3_NIC_STATE_INITED,
15 	HNS3_NIC_STATE_DOWN,
16 	HNS3_NIC_STATE_DISABLED,
17 	HNS3_NIC_STATE_REMOVING,
18 	HNS3_NIC_STATE_SERVICE_INITED,
19 	HNS3_NIC_STATE_SERVICE_SCHED,
20 	HNS3_NIC_STATE2_RESET_REQUESTED,
21 	HNS3_NIC_STATE_MAX
22 };
23 
24 #define HNS3_RING_RX_RING_BASEADDR_L_REG	0x00000
25 #define HNS3_RING_RX_RING_BASEADDR_H_REG	0x00004
26 #define HNS3_RING_RX_RING_BD_NUM_REG		0x00008
27 #define HNS3_RING_RX_RING_BD_LEN_REG		0x0000C
28 #define HNS3_RING_RX_RING_TAIL_REG		0x00018
29 #define HNS3_RING_RX_RING_HEAD_REG		0x0001C
30 #define HNS3_RING_RX_RING_FBDNUM_REG		0x00020
31 #define HNS3_RING_RX_RING_PKTNUM_RECORD_REG	0x0002C
32 
33 #define HNS3_RING_TX_RING_BASEADDR_L_REG	0x00040
34 #define HNS3_RING_TX_RING_BASEADDR_H_REG	0x00044
35 #define HNS3_RING_TX_RING_BD_NUM_REG		0x00048
36 #define HNS3_RING_TX_RING_TC_REG		0x00050
37 #define HNS3_RING_TX_RING_TAIL_REG		0x00058
38 #define HNS3_RING_TX_RING_HEAD_REG		0x0005C
39 #define HNS3_RING_TX_RING_FBDNUM_REG		0x00060
40 #define HNS3_RING_TX_RING_OFFSET_REG		0x00064
41 #define HNS3_RING_TX_RING_EBDNUM_REG		0x00068
42 #define HNS3_RING_TX_RING_PKTNUM_RECORD_REG	0x0006C
43 #define HNS3_RING_TX_RING_EBD_OFFSET_REG	0x00070
44 #define HNS3_RING_TX_RING_BD_ERR_REG		0x00074
45 #define HNS3_RING_PREFETCH_EN_REG		0x0007C
46 #define HNS3_RING_CFG_VF_NUM_REG		0x00080
47 #define HNS3_RING_ASID_REG			0x0008C
48 #define HNS3_RING_EN_REG			0x00090
49 
50 #define HNS3_TX_REG_OFFSET			0x40
51 
52 #define HNS3_RX_HEAD_SIZE			256
53 
54 #define HNS3_TX_TIMEOUT (5 * HZ)
55 #define HNS3_RING_NAME_LEN			16
56 #define HNS3_BUFFER_SIZE_2048			2048
57 #define HNS3_RING_MAX_PENDING			32760
58 #define HNS3_RING_MIN_PENDING			72
59 #define HNS3_RING_BD_MULTIPLE			8
60 /* max frame size of mac */
61 #define HNS3_MAC_MAX_FRAME			9728
62 #define HNS3_MAX_MTU \
63 	(HNS3_MAC_MAX_FRAME - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN))
64 
65 #define HNS3_BD_SIZE_512_TYPE			0
66 #define HNS3_BD_SIZE_1024_TYPE			1
67 #define HNS3_BD_SIZE_2048_TYPE			2
68 #define HNS3_BD_SIZE_4096_TYPE			3
69 
70 #define HNS3_RX_FLAG_VLAN_PRESENT		0x1
71 #define HNS3_RX_FLAG_L3ID_IPV4			0x0
72 #define HNS3_RX_FLAG_L3ID_IPV6			0x1
73 #define HNS3_RX_FLAG_L4ID_UDP			0x0
74 #define HNS3_RX_FLAG_L4ID_TCP			0x1
75 
76 #define HNS3_RXD_DMAC_S				0
77 #define HNS3_RXD_DMAC_M				(0x3 << HNS3_RXD_DMAC_S)
78 #define HNS3_RXD_VLAN_S				2
79 #define HNS3_RXD_VLAN_M				(0x3 << HNS3_RXD_VLAN_S)
80 #define HNS3_RXD_L3ID_S				4
81 #define HNS3_RXD_L3ID_M				(0xf << HNS3_RXD_L3ID_S)
82 #define HNS3_RXD_L4ID_S				8
83 #define HNS3_RXD_L4ID_M				(0xf << HNS3_RXD_L4ID_S)
84 #define HNS3_RXD_FRAG_B				12
85 #define HNS3_RXD_STRP_TAGP_S			13
86 #define HNS3_RXD_STRP_TAGP_M			(0x3 << HNS3_RXD_STRP_TAGP_S)
87 
88 #define HNS3_RXD_L2E_B				16
89 #define HNS3_RXD_L3E_B				17
90 #define HNS3_RXD_L4E_B				18
91 #define HNS3_RXD_TRUNCAT_B			19
92 #define HNS3_RXD_HOI_B				20
93 #define HNS3_RXD_DOI_B				21
94 #define HNS3_RXD_OL3E_B				22
95 #define HNS3_RXD_OL4E_B				23
96 #define HNS3_RXD_GRO_COUNT_S			24
97 #define HNS3_RXD_GRO_COUNT_M			(0x3f << HNS3_RXD_GRO_COUNT_S)
98 #define HNS3_RXD_GRO_FIXID_B			30
99 #define HNS3_RXD_GRO_ECN_B			31
100 
101 #define HNS3_RXD_ODMAC_S			0
102 #define HNS3_RXD_ODMAC_M			(0x3 << HNS3_RXD_ODMAC_S)
103 #define HNS3_RXD_OVLAN_S			2
104 #define HNS3_RXD_OVLAN_M			(0x3 << HNS3_RXD_OVLAN_S)
105 #define HNS3_RXD_OL3ID_S			4
106 #define HNS3_RXD_OL3ID_M			(0xf << HNS3_RXD_OL3ID_S)
107 #define HNS3_RXD_OL4ID_S			8
108 #define HNS3_RXD_OL4ID_M			(0xf << HNS3_RXD_OL4ID_S)
109 #define HNS3_RXD_FBHI_S				12
110 #define HNS3_RXD_FBHI_M				(0x3 << HNS3_RXD_FBHI_S)
111 #define HNS3_RXD_FBLI_S				14
112 #define HNS3_RXD_FBLI_M				(0x3 << HNS3_RXD_FBLI_S)
113 
114 #define HNS3_RXD_BDTYPE_S			0
115 #define HNS3_RXD_BDTYPE_M			(0xf << HNS3_RXD_BDTYPE_S)
116 #define HNS3_RXD_VLD_B				4
117 #define HNS3_RXD_UDP0_B				5
118 #define HNS3_RXD_EXTEND_B			7
119 #define HNS3_RXD_FE_B				8
120 #define HNS3_RXD_LUM_B				9
121 #define HNS3_RXD_CRCP_B				10
122 #define HNS3_RXD_L3L4P_B			11
123 #define HNS3_RXD_TSIND_S			12
124 #define HNS3_RXD_TSIND_M			(0x7 << HNS3_RXD_TSIND_S)
125 #define HNS3_RXD_LKBK_B				15
126 #define HNS3_RXD_GRO_SIZE_S			16
127 #define HNS3_RXD_GRO_SIZE_M			(0x3fff << HNS3_RXD_GRO_SIZE_S)
128 
129 #define HNS3_TXD_L3T_S				0
130 #define HNS3_TXD_L3T_M				(0x3 << HNS3_TXD_L3T_S)
131 #define HNS3_TXD_L4T_S				2
132 #define HNS3_TXD_L4T_M				(0x3 << HNS3_TXD_L4T_S)
133 #define HNS3_TXD_L3CS_B				4
134 #define HNS3_TXD_L4CS_B				5
135 #define HNS3_TXD_VLAN_B				6
136 #define HNS3_TXD_TSO_B				7
137 
138 #define HNS3_TXD_L2LEN_S			8
139 #define HNS3_TXD_L2LEN_M			(0xff << HNS3_TXD_L2LEN_S)
140 #define HNS3_TXD_L3LEN_S			16
141 #define HNS3_TXD_L3LEN_M			(0xff << HNS3_TXD_L3LEN_S)
142 #define HNS3_TXD_L4LEN_S			24
143 #define HNS3_TXD_L4LEN_M			(0xff << HNS3_TXD_L4LEN_S)
144 
145 #define HNS3_TXD_OL3T_S				0
146 #define HNS3_TXD_OL3T_M				(0x3 << HNS3_TXD_OL3T_S)
147 #define HNS3_TXD_OVLAN_B			2
148 #define HNS3_TXD_MACSEC_B			3
149 #define HNS3_TXD_TUNTYPE_S			4
150 #define HNS3_TXD_TUNTYPE_M			(0xf << HNS3_TXD_TUNTYPE_S)
151 
152 #define HNS3_TXD_BDTYPE_S			0
153 #define HNS3_TXD_BDTYPE_M			(0xf << HNS3_TXD_BDTYPE_S)
154 #define HNS3_TXD_FE_B				4
155 #define HNS3_TXD_SC_S				5
156 #define HNS3_TXD_SC_M				(0x3 << HNS3_TXD_SC_S)
157 #define HNS3_TXD_EXTEND_B			7
158 #define HNS3_TXD_VLD_B				8
159 #define HNS3_TXD_RI_B				9
160 #define HNS3_TXD_RA_B				10
161 #define HNS3_TXD_TSYN_B				11
162 #define HNS3_TXD_DECTTL_S			12
163 #define HNS3_TXD_DECTTL_M			(0xf << HNS3_TXD_DECTTL_S)
164 
165 #define HNS3_TXD_MSS_S				0
166 #define HNS3_TXD_MSS_M				(0x3fff << HNS3_TXD_MSS_S)
167 
168 #define HNS3_TX_LAST_SIZE_M			0xffff
169 
170 #define HNS3_VECTOR_TX_IRQ			BIT_ULL(0)
171 #define HNS3_VECTOR_RX_IRQ			BIT_ULL(1)
172 
173 #define HNS3_VECTOR_NOT_INITED			0
174 #define HNS3_VECTOR_INITED			1
175 
176 #define HNS3_MAX_BD_SIZE			65535
177 #define HNS3_MAX_NON_TSO_BD_NUM			8U
178 #define HNS3_MAX_TSO_BD_NUM			63U
179 #define HNS3_MAX_TSO_SIZE \
180 	(HNS3_MAX_BD_SIZE * HNS3_MAX_TSO_BD_NUM)
181 
182 #define HNS3_MAX_NON_TSO_SIZE \
183 	(HNS3_MAX_BD_SIZE * HNS3_MAX_NON_TSO_BD_NUM)
184 
185 #define HNS3_VECTOR_GL0_OFFSET			0x100
186 #define HNS3_VECTOR_GL1_OFFSET			0x200
187 #define HNS3_VECTOR_GL2_OFFSET			0x300
188 #define HNS3_VECTOR_RL_OFFSET			0x900
189 #define HNS3_VECTOR_RL_EN_B			6
190 
191 #define HNS3_RING_EN_B				0
192 
193 enum hns3_pkt_l2t_type {
194 	HNS3_L2_TYPE_UNICAST,
195 	HNS3_L2_TYPE_MULTICAST,
196 	HNS3_L2_TYPE_BROADCAST,
197 	HNS3_L2_TYPE_INVALID,
198 };
199 
200 enum hns3_pkt_l3t_type {
201 	HNS3_L3T_NONE,
202 	HNS3_L3T_IPV6,
203 	HNS3_L3T_IPV4,
204 	HNS3_L3T_RESERVED
205 };
206 
207 enum hns3_pkt_l4t_type {
208 	HNS3_L4T_UNKNOWN,
209 	HNS3_L4T_TCP,
210 	HNS3_L4T_UDP,
211 	HNS3_L4T_SCTP
212 };
213 
214 enum hns3_pkt_ol3t_type {
215 	HNS3_OL3T_NONE,
216 	HNS3_OL3T_IPV6,
217 	HNS3_OL3T_IPV4_NO_CSUM,
218 	HNS3_OL3T_IPV4_CSUM
219 };
220 
221 enum hns3_pkt_tun_type {
222 	HNS3_TUN_NONE,
223 	HNS3_TUN_MAC_IN_UDP,
224 	HNS3_TUN_NVGRE,
225 	HNS3_TUN_OTHER
226 };
227 
228 /* hardware spec ring buffer format */
229 struct __packed hns3_desc {
230 	__le64 addr;
231 	union {
232 		struct {
233 			__le16 vlan_tag;
234 			__le16 send_size;
235 			union {
236 				__le32 type_cs_vlan_tso_len;
237 				struct {
238 					__u8 type_cs_vlan_tso;
239 					__u8 l2_len;
240 					__u8 l3_len;
241 					__u8 l4_len;
242 				};
243 			};
244 			__le16 outer_vlan_tag;
245 			__le16 tv;
246 
247 		union {
248 			__le32 ol_type_vlan_len_msec;
249 			struct {
250 				__u8 ol_type_vlan_msec;
251 				__u8 ol2_len;
252 				__u8 ol3_len;
253 				__u8 ol4_len;
254 			};
255 		};
256 
257 			__le32 paylen;
258 			__le16 bdtp_fe_sc_vld_ra_ri;
259 			__le16 mss;
260 		} tx;
261 
262 		struct {
263 			__le32 l234_info;
264 			__le16 pkt_len;
265 			__le16 size;
266 
267 			__le32 rss_hash;
268 			__le16 fd_id;
269 			__le16 vlan_tag;
270 
271 			union {
272 				__le32 ol_info;
273 				struct {
274 					__le16 o_dm_vlan_id_fb;
275 					__le16 ot_vlan_tag;
276 				};
277 			};
278 
279 			__le32 bd_base_info;
280 		} rx;
281 	};
282 };
283 
284 struct hns3_desc_cb {
285 	dma_addr_t dma; /* dma address of this desc */
286 	void *buf;      /* cpu addr for a desc */
287 
288 	/* priv data for the desc, e.g. skb when use with ip stack */
289 	void *priv;
290 	u32 page_offset;
291 	u32 length;     /* length of the buffer */
292 
293 	u16 reuse_flag;
294 
295 	/* desc type, used by the ring user to mark the type of the priv data */
296 	u16 type;
297 };
298 
299 enum hns3_pkt_l3type {
300 	HNS3_L3_TYPE_IPV4,
301 	HNS3_L3_TYPE_IPV6,
302 	HNS3_L3_TYPE_ARP,
303 	HNS3_L3_TYPE_RARP,
304 	HNS3_L3_TYPE_IPV4_OPT,
305 	HNS3_L3_TYPE_IPV6_EXT,
306 	HNS3_L3_TYPE_LLDP,
307 	HNS3_L3_TYPE_BPDU,
308 	HNS3_L3_TYPE_MAC_PAUSE,
309 	HNS3_L3_TYPE_PFC_PAUSE,/* 0x9*/
310 
311 	/* reserved for 0xA~0xB */
312 
313 	HNS3_L3_TYPE_CNM = 0xc,
314 
315 	/* reserved for 0xD~0xE */
316 
317 	HNS3_L3_TYPE_PARSE_FAIL	= 0xf /* must be last */
318 };
319 
320 enum hns3_pkt_l4type {
321 	HNS3_L4_TYPE_UDP,
322 	HNS3_L4_TYPE_TCP,
323 	HNS3_L4_TYPE_GRE,
324 	HNS3_L4_TYPE_SCTP,
325 	HNS3_L4_TYPE_IGMP,
326 	HNS3_L4_TYPE_ICMP,
327 
328 	/* reserved for 0x6~0xE */
329 
330 	HNS3_L4_TYPE_PARSE_FAIL	= 0xf /* must be last */
331 };
332 
333 enum hns3_pkt_ol3type {
334 	HNS3_OL3_TYPE_IPV4 = 0,
335 	HNS3_OL3_TYPE_IPV6,
336 	/* reserved for 0x2~0x3 */
337 	HNS3_OL3_TYPE_IPV4_OPT = 4,
338 	HNS3_OL3_TYPE_IPV6_EXT,
339 
340 	/* reserved for 0x6~0xE */
341 
342 	HNS3_OL3_TYPE_PARSE_FAIL = 0xf	/* must be last */
343 };
344 
345 enum hns3_pkt_ol4type {
346 	HNS3_OL4_TYPE_NO_TUN,
347 	HNS3_OL4_TYPE_MAC_IN_UDP,
348 	HNS3_OL4_TYPE_NVGRE,
349 	HNS3_OL4_TYPE_UNKNOWN
350 };
351 
352 struct ring_stats {
353 	u64 io_err_cnt;
354 	u64 sw_err_cnt;
355 	u64 seg_pkt_cnt;
356 	union {
357 		struct {
358 			u64 tx_pkts;
359 			u64 tx_bytes;
360 			u64 tx_err_cnt;
361 			u64 restart_queue;
362 			u64 tx_busy;
363 			u64 tx_copy;
364 			u64 tx_vlan_err;
365 			u64 tx_l4_proto_err;
366 			u64 tx_l2l3l4_err;
367 			u64 tx_tso_err;
368 		};
369 		struct {
370 			u64 rx_pkts;
371 			u64 rx_bytes;
372 			u64 rx_err_cnt;
373 			u64 reuse_pg_cnt;
374 			u64 err_pkt_len;
375 			u64 err_bd_num;
376 			u64 l2_err;
377 			u64 l3l4_csum_err;
378 			u64 rx_multicast;
379 			u64 non_reuse_pg;
380 		};
381 	};
382 };
383 
384 struct hns3_enet_ring {
385 	u8 __iomem *io_base; /* base io address for the ring */
386 	struct hns3_desc *desc; /* dma map address space */
387 	struct hns3_desc_cb *desc_cb;
388 	struct hns3_enet_ring *next;
389 	struct hns3_enet_tqp_vector *tqp_vector;
390 	struct hnae3_queue *tqp;
391 	int queue_index;
392 	struct device *dev; /* will be used for DMA mapping of descriptors */
393 
394 	/* statistic */
395 	struct ring_stats stats;
396 	struct u64_stats_sync syncp;
397 
398 	dma_addr_t desc_dma_addr;
399 	u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
400 	u16 desc_num;       /* total number of desc */
401 	int next_to_use;    /* idx of next spare desc */
402 
403 	/* idx of lastest sent desc, the ring is empty when equal to
404 	 * next_to_use
405 	 */
406 	int next_to_clean;
407 
408 	u32 pull_len; /* head length for current packet */
409 	u32 frag_num;
410 	unsigned char *va; /* first buffer address for current packet */
411 
412 	u32 flag;          /* ring attribute */
413 
414 	int pending_buf;
415 	struct sk_buff *skb;
416 	struct sk_buff *tail_skb;
417 } ____cacheline_internodealigned_in_smp;
418 
419 enum hns3_flow_level_range {
420 	HNS3_FLOW_LOW = 0,
421 	HNS3_FLOW_MID = 1,
422 	HNS3_FLOW_HIGH = 2,
423 	HNS3_FLOW_ULTRA = 3,
424 };
425 
426 #define HNS3_INT_GL_MAX			0x1FE0
427 #define HNS3_INT_GL_50K			0x0014
428 #define HNS3_INT_GL_20K			0x0032
429 #define HNS3_INT_GL_18K			0x0036
430 #define HNS3_INT_GL_8K			0x007C
431 
432 #define HNS3_INT_RL_MAX			0x00EC
433 #define HNS3_INT_RL_ENABLE_MASK		0x40
434 
435 struct hns3_enet_coalesce {
436 	u16 int_gl;
437 	u8 gl_adapt_enable;
438 	enum hns3_flow_level_range flow_level;
439 };
440 
441 struct hns3_enet_ring_group {
442 	/* array of pointers to rings */
443 	struct hns3_enet_ring *ring;
444 	u64 total_bytes;	/* total bytes processed this group */
445 	u64 total_packets;	/* total packets processed this group */
446 	u16 count;
447 	struct hns3_enet_coalesce coal;
448 };
449 
450 struct hns3_enet_tqp_vector {
451 	struct hnae3_handle *handle;
452 	u8 __iomem *mask_addr;
453 	int vector_irq;
454 	int irq_init_flag;
455 
456 	u16 idx;		/* index in the TQP vector array per handle. */
457 
458 	struct napi_struct napi;
459 
460 	struct hns3_enet_ring_group rx_group;
461 	struct hns3_enet_ring_group tx_group;
462 
463 	cpumask_t affinity_mask;
464 	u16 num_tqps;	/* total number of tqps in TQP vector */
465 	struct irq_affinity_notify affinity_notify;
466 
467 	char name[HNAE3_INT_NAME_LEN];
468 
469 	unsigned long last_jiffies;
470 } ____cacheline_internodealigned_in_smp;
471 
472 struct hns3_nic_priv {
473 	struct hnae3_handle *ae_handle;
474 	struct net_device *netdev;
475 	struct device *dev;
476 
477 	/**
478 	 * the cb for nic to manage the ring buffer, the first half of the
479 	 * array is for tx_ring and vice versa for the second half
480 	 */
481 	struct hns3_enet_ring *ring;
482 	struct hns3_enet_tqp_vector *tqp_vector;
483 	u16 vector_num;
484 
485 	u64 tx_timeout_count;
486 
487 	unsigned long state;
488 
489 	struct hns3_enet_coalesce tx_coal;
490 	struct hns3_enet_coalesce rx_coal;
491 };
492 
493 union l3_hdr_info {
494 	struct iphdr *v4;
495 	struct ipv6hdr *v6;
496 	unsigned char *hdr;
497 };
498 
499 union l4_hdr_info {
500 	struct tcphdr *tcp;
501 	struct udphdr *udp;
502 	struct gre_base_hdr *gre;
503 	unsigned char *hdr;
504 };
505 
506 struct hns3_hw_error_info {
507 	enum hnae3_hw_error_type type;
508 	const char *msg;
509 };
510 
511 static inline int ring_space(struct hns3_enet_ring *ring)
512 {
513 	/* This smp_load_acquire() pairs with smp_store_release() in
514 	 * hns3_nic_reclaim_one_desc called by hns3_clean_tx_ring.
515 	 */
516 	int begin = smp_load_acquire(&ring->next_to_clean);
517 	int end = READ_ONCE(ring->next_to_use);
518 
519 	return ((end >= begin) ? (ring->desc_num - end + begin) :
520 			(begin - end)) - 1;
521 }
522 
523 static inline int is_ring_empty(struct hns3_enet_ring *ring)
524 {
525 	return ring->next_to_use == ring->next_to_clean;
526 }
527 
528 static inline u32 hns3_read_reg(void __iomem *base, u32 reg)
529 {
530 	return readl(base + reg);
531 }
532 
533 static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
534 {
535 	u8 __iomem *reg_addr = READ_ONCE(base);
536 
537 	writel(value, reg_addr + reg);
538 }
539 
540 #define hns3_read_dev(a, reg) \
541 	hns3_read_reg((a)->io_base, (reg))
542 
543 static inline bool hns3_nic_resetting(struct net_device *netdev)
544 {
545 	struct hns3_nic_priv *priv = netdev_priv(netdev);
546 
547 	return test_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
548 }
549 
550 #define hns3_write_dev(a, reg, value) \
551 	hns3_write_reg((a)->io_base, (reg), (value))
552 
553 #define hnae3_queue_xmit(tqp, buf_num) writel_relaxed(buf_num, \
554 		(tqp)->io_base + HNS3_RING_TX_RING_TAIL_REG)
555 
556 #define ring_to_dev(ring) ((ring)->dev)
557 
558 #define ring_to_netdev(ring)	((ring)->tqp_vector->napi.dev)
559 
560 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
561 	DMA_TO_DEVICE : DMA_FROM_DEVICE)
562 
563 #define hns3_buf_size(_ring) ((_ring)->buf_size)
564 
565 static inline unsigned int hns3_page_order(struct hns3_enet_ring *ring)
566 {
567 #if (PAGE_SIZE < 8192)
568 	if (ring->buf_size > (PAGE_SIZE / 2))
569 		return 1;
570 #endif
571 	return 0;
572 }
573 
574 #define hns3_page_size(_ring) (PAGE_SIZE << hns3_page_order(_ring))
575 
576 /* iterator for handling rings in ring group */
577 #define hns3_for_each_ring(pos, head) \
578 	for (pos = (head).ring; pos; pos = pos->next)
579 
580 #define hns3_get_handle(ndev) \
581 	(((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
582 
583 #define hns3_gl_usec_to_reg(int_gl) (int_gl >> 1)
584 #define hns3_gl_round_down(int_gl) round_down(int_gl, 2)
585 
586 #define hns3_rl_usec_to_reg(int_rl) (int_rl >> 2)
587 #define hns3_rl_round_down(int_rl) round_down(int_rl, 4)
588 
589 void hns3_ethtool_set_ops(struct net_device *netdev);
590 int hns3_set_channels(struct net_device *netdev,
591 		      struct ethtool_channels *ch);
592 
593 void hns3_clean_tx_ring(struct hns3_enet_ring *ring);
594 int hns3_init_all_ring(struct hns3_nic_priv *priv);
595 int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
596 int hns3_nic_reset_all_ring(struct hnae3_handle *h);
597 void hns3_fini_ring(struct hns3_enet_ring *ring);
598 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
599 bool hns3_is_phys_func(struct pci_dev *pdev);
600 int hns3_clean_rx_ring(
601 		struct hns3_enet_ring *ring, int budget,
602 		void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
603 
604 void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
605 				    u32 gl_value);
606 void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
607 				    u32 gl_value);
608 void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
609 				 u32 rl_value);
610 
611 void hns3_enable_vlan_filter(struct net_device *netdev, bool enable);
612 int hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags);
613 void hns3_request_update_promisc_mode(struct hnae3_handle *handle);
614 
615 #ifdef CONFIG_HNS3_DCB
616 void hns3_dcbnl_setup(struct hnae3_handle *handle);
617 #else
618 static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
619 #endif
620 
621 void hns3_dbg_init(struct hnae3_handle *handle);
622 void hns3_dbg_uninit(struct hnae3_handle *handle);
623 void hns3_dbg_register_debugfs(const char *debugfs_dir_name);
624 void hns3_dbg_unregister_debugfs(void);
625 void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size);
626 #endif
627