2 * Copyright (c) 2016~2017 Hisilicon Limited.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
10 #include <linux/dma-mapping.h>
11 #include <linux/etherdevice.h>
12 #include <linux/interrupt.h>
13 #include <linux/if_vlan.h>
15 #include <linux/ipv6.h>
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/skbuff.h>
19 #include <linux/sctp.h>
20 #include <linux/vermagic.h>
22 #include <net/vxlan.h>
25 #include "hns3_enet.h"
27 const char hns3_driver_name
[] = "hns3";
28 const char hns3_driver_version
[] = VERMAGIC_STRING
;
29 static const char hns3_driver_string
[] =
30 "Hisilicon Ethernet Network Driver for Hip08 Family";
31 static const char hns3_copyright
[] = "Copyright (c) 2017 Huawei Corporation.";
32 static struct hnae3_client client
;
34 /* hns3_pci_tbl - PCI Device ID Table
36 * Last entry must be all 0s
38 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
39 * Class, Class Mask, private data (not used) }
41 static const struct pci_device_id hns3_pci_tbl
[] = {
42 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_GE
), 0},
43 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_25GE
), 0},
44 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_25GE_RDMA
),
45 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS
},
46 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_25GE_RDMA_MACSEC
),
47 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS
},
48 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_50GE_RDMA
),
49 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS
},
50 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_50GE_RDMA_MACSEC
),
51 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS
},
52 {PCI_VDEVICE(HUAWEI
, HNAE3_DEV_ID_100G_RDMA_MACSEC
),
53 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS
},
54 /* required last entry */
57 MODULE_DEVICE_TABLE(pci
, hns3_pci_tbl
);
59 static irqreturn_t
hns3_irq_handle(int irq
, void *dev
)
61 struct hns3_enet_tqp_vector
*tqp_vector
= dev
;
63 napi_schedule(&tqp_vector
->napi
);
68 static void hns3_nic_uninit_irq(struct hns3_nic_priv
*priv
)
70 struct hns3_enet_tqp_vector
*tqp_vectors
;
73 for (i
= 0; i
< priv
->vector_num
; i
++) {
74 tqp_vectors
= &priv
->tqp_vector
[i
];
76 if (tqp_vectors
->irq_init_flag
!= HNS3_VECTOR_INITED
)
79 /* release the irq resource */
80 free_irq(tqp_vectors
->vector_irq
, tqp_vectors
);
81 tqp_vectors
->irq_init_flag
= HNS3_VECTOR_NOT_INITED
;
85 static int hns3_nic_init_irq(struct hns3_nic_priv
*priv
)
87 struct hns3_enet_tqp_vector
*tqp_vectors
;
94 for (i
= 0; i
< priv
->vector_num
; i
++) {
95 tqp_vectors
= &priv
->tqp_vector
[i
];
97 if (tqp_vectors
->irq_init_flag
== HNS3_VECTOR_INITED
)
100 if (tqp_vectors
->tx_group
.ring
&& tqp_vectors
->rx_group
.ring
) {
101 snprintf(tqp_vectors
->name
, HNAE3_INT_NAME_LEN
- 1,
102 "%s-%s-%d", priv
->netdev
->name
, "TxRx",
105 } else if (tqp_vectors
->rx_group
.ring
) {
106 snprintf(tqp_vectors
->name
, HNAE3_INT_NAME_LEN
- 1,
107 "%s-%s-%d", priv
->netdev
->name
, "Rx",
109 } else if (tqp_vectors
->tx_group
.ring
) {
110 snprintf(tqp_vectors
->name
, HNAE3_INT_NAME_LEN
- 1,
111 "%s-%s-%d", priv
->netdev
->name
, "Tx",
114 /* Skip this unused q_vector */
118 tqp_vectors
->name
[HNAE3_INT_NAME_LEN
- 1] = '\0';
120 ret
= request_irq(tqp_vectors
->vector_irq
, hns3_irq_handle
, 0,
124 netdev_err(priv
->netdev
, "request irq(%d) fail\n",
125 tqp_vectors
->vector_irq
);
129 tqp_vectors
->irq_init_flag
= HNS3_VECTOR_INITED
;
135 static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector
*tqp_vector
,
138 writel(mask_en
, tqp_vector
->mask_addr
);
141 static void hns3_vector_enable(struct hns3_enet_tqp_vector
*tqp_vector
)
143 napi_enable(&tqp_vector
->napi
);
146 hns3_mask_vector_irq(tqp_vector
, 1);
149 static void hns3_vector_disable(struct hns3_enet_tqp_vector
*tqp_vector
)
152 hns3_mask_vector_irq(tqp_vector
, 0);
154 disable_irq(tqp_vector
->vector_irq
);
155 napi_disable(&tqp_vector
->napi
);
158 static void hns3_set_vector_coalesc_gl(struct hns3_enet_tqp_vector
*tqp_vector
,
161 /* this defines the configuration for GL (Interrupt Gap Limiter)
162 * GL defines inter interrupt gap.
163 * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
165 writel(gl_value
, tqp_vector
->mask_addr
+ HNS3_VECTOR_GL0_OFFSET
);
166 writel(gl_value
, tqp_vector
->mask_addr
+ HNS3_VECTOR_GL1_OFFSET
);
167 writel(gl_value
, tqp_vector
->mask_addr
+ HNS3_VECTOR_GL2_OFFSET
);
170 static void hns3_set_vector_coalesc_rl(struct hns3_enet_tqp_vector
*tqp_vector
,
173 /* this defines the configuration for RL (Interrupt Rate Limiter).
174 * Rl defines rate of interrupts i.e. number of interrupts-per-second
175 * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
177 writel(rl_value
, tqp_vector
->mask_addr
+ HNS3_VECTOR_RL_OFFSET
);
180 static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector
*tqp_vector
)
182 /* initialize the configuration for interrupt coalescing.
183 * 1. GL (Interrupt Gap Limiter)
184 * 2. RL (Interrupt Rate Limiter)
187 /* Default :enable interrupt coalesce */
188 tqp_vector
->rx_group
.int_gl
= HNS3_INT_GL_50K
;
189 tqp_vector
->tx_group
.int_gl
= HNS3_INT_GL_50K
;
190 hns3_set_vector_coalesc_gl(tqp_vector
, HNS3_INT_GL_50K
);
191 /* for now we are disabling Interrupt RL - we
192 * will re-enable later
194 hns3_set_vector_coalesc_rl(tqp_vector
, 0);
195 tqp_vector
->rx_group
.flow_level
= HNS3_FLOW_LOW
;
196 tqp_vector
->tx_group
.flow_level
= HNS3_FLOW_LOW
;
199 static int hns3_nic_set_real_num_queue(struct net_device
*netdev
)
201 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
202 struct hnae3_knic_private_info
*kinfo
= &h
->kinfo
;
203 unsigned int queue_size
= kinfo
->rss_size
* kinfo
->num_tc
;
206 ret
= netif_set_real_num_tx_queues(netdev
, queue_size
);
209 "netif_set_real_num_tx_queues fail, ret=%d!\n",
214 ret
= netif_set_real_num_rx_queues(netdev
, queue_size
);
217 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret
);
224 static int hns3_nic_net_up(struct net_device
*netdev
)
226 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
227 struct hnae3_handle
*h
= priv
->ae_handle
;
231 /* get irq resource for all vectors */
232 ret
= hns3_nic_init_irq(priv
);
234 netdev_err(netdev
, "hns init irq failed! ret=%d\n", ret
);
238 /* enable the vectors */
239 for (i
= 0; i
< priv
->vector_num
; i
++)
240 hns3_vector_enable(&priv
->tqp_vector
[i
]);
242 /* start the ae_dev */
243 ret
= h
->ae_algo
->ops
->start
? h
->ae_algo
->ops
->start(h
) : 0;
250 for (j
= i
- 1; j
>= 0; j
--)
251 hns3_vector_disable(&priv
->tqp_vector
[j
]);
253 hns3_nic_uninit_irq(priv
);
258 static int hns3_nic_net_open(struct net_device
*netdev
)
262 netif_carrier_off(netdev
);
264 ret
= hns3_nic_set_real_num_queue(netdev
);
268 ret
= hns3_nic_net_up(netdev
);
271 "hns net up fail, ret=%d!\n", ret
);
278 static void hns3_nic_net_down(struct net_device
*netdev
)
280 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
281 const struct hnae3_ae_ops
*ops
;
285 ops
= priv
->ae_handle
->ae_algo
->ops
;
287 ops
->stop(priv
->ae_handle
);
289 /* disable vectors */
290 for (i
= 0; i
< priv
->vector_num
; i
++)
291 hns3_vector_disable(&priv
->tqp_vector
[i
]);
293 /* free irq resources */
294 hns3_nic_uninit_irq(priv
);
297 static int hns3_nic_net_stop(struct net_device
*netdev
)
299 netif_tx_stop_all_queues(netdev
);
300 netif_carrier_off(netdev
);
302 hns3_nic_net_down(netdev
);
307 void hns3_set_multicast_list(struct net_device
*netdev
)
309 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
310 struct netdev_hw_addr
*ha
= NULL
;
312 if (h
->ae_algo
->ops
->set_mc_addr
) {
313 netdev_for_each_mc_addr(ha
, netdev
)
314 if (h
->ae_algo
->ops
->set_mc_addr(h
, ha
->addr
))
315 netdev_err(netdev
, "set multicast fail\n");
319 static int hns3_nic_uc_sync(struct net_device
*netdev
,
320 const unsigned char *addr
)
322 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
324 if (h
->ae_algo
->ops
->add_uc_addr
)
325 return h
->ae_algo
->ops
->add_uc_addr(h
, addr
);
330 static int hns3_nic_uc_unsync(struct net_device
*netdev
,
331 const unsigned char *addr
)
333 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
335 if (h
->ae_algo
->ops
->rm_uc_addr
)
336 return h
->ae_algo
->ops
->rm_uc_addr(h
, addr
);
341 static int hns3_nic_mc_sync(struct net_device
*netdev
,
342 const unsigned char *addr
)
344 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
346 if (h
->ae_algo
->ops
->add_mc_addr
)
347 return h
->ae_algo
->ops
->add_mc_addr(h
, addr
);
352 static int hns3_nic_mc_unsync(struct net_device
*netdev
,
353 const unsigned char *addr
)
355 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
357 if (h
->ae_algo
->ops
->rm_mc_addr
)
358 return h
->ae_algo
->ops
->rm_mc_addr(h
, addr
);
363 void hns3_nic_set_rx_mode(struct net_device
*netdev
)
365 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
367 if (h
->ae_algo
->ops
->set_promisc_mode
) {
368 if (netdev
->flags
& IFF_PROMISC
)
369 h
->ae_algo
->ops
->set_promisc_mode(h
, 1);
371 h
->ae_algo
->ops
->set_promisc_mode(h
, 0);
373 if (__dev_uc_sync(netdev
, hns3_nic_uc_sync
, hns3_nic_uc_unsync
))
374 netdev_err(netdev
, "sync uc address fail\n");
375 if (netdev
->flags
& IFF_MULTICAST
)
376 if (__dev_mc_sync(netdev
, hns3_nic_mc_sync
, hns3_nic_mc_unsync
))
377 netdev_err(netdev
, "sync mc address fail\n");
380 static int hns3_set_tso(struct sk_buff
*skb
, u32
*paylen
,
381 u16
*mss
, u32
*type_cs_vlan_tso
)
383 u32 l4_offset
, hdr_len
;
384 union l3_hdr_info l3
;
385 union l4_hdr_info l4
;
389 if (!skb_is_gso(skb
))
392 ret
= skb_cow_head(skb
, 0);
396 l3
.hdr
= skb_network_header(skb
);
397 l4
.hdr
= skb_transport_header(skb
);
399 /* Software should clear the IPv4's checksum field when tso is
402 if (l3
.v4
->version
== 4)
406 if (skb_shinfo(skb
)->gso_type
& (SKB_GSO_GRE
|
409 SKB_GSO_UDP_TUNNEL_CSUM
)) {
410 if ((!(skb_shinfo(skb
)->gso_type
&
412 (skb_shinfo(skb
)->gso_type
&
413 SKB_GSO_UDP_TUNNEL_CSUM
)) {
414 /* Software should clear the udp's checksum
415 * field when tso is needed.
419 /* reset l3&l4 pointers from outer to inner headers */
420 l3
.hdr
= skb_inner_network_header(skb
);
421 l4
.hdr
= skb_inner_transport_header(skb
);
423 /* Software should clear the IPv4's checksum field when
426 if (l3
.v4
->version
== 4)
430 /* normal or tunnel packet*/
431 l4_offset
= l4
.hdr
- skb
->data
;
432 hdr_len
= (l4
.tcp
->doff
* 4) + l4_offset
;
434 /* remove payload length from inner pseudo checksum when tso*/
435 l4_paylen
= skb
->len
- l4_offset
;
436 csum_replace_by_diff(&l4
.tcp
->check
,
437 (__force __wsum
)htonl(l4_paylen
));
439 /* find the txbd field values */
440 *paylen
= skb
->len
- hdr_len
;
441 hnae_set_bit(*type_cs_vlan_tso
,
444 /* get MSS for TSO */
445 *mss
= skb_shinfo(skb
)->gso_size
;
450 static int hns3_get_l4_protocol(struct sk_buff
*skb
, u8
*ol4_proto
,
458 unsigned char *l4_hdr
;
459 unsigned char *exthdr
;
463 /* find outer header point */
464 l3
.hdr
= skb_network_header(skb
);
465 l4_hdr
= skb_inner_transport_header(skb
);
467 if (skb
->protocol
== htons(ETH_P_IPV6
)) {
468 exthdr
= l3
.hdr
+ sizeof(*l3
.v6
);
469 l4_proto_tmp
= l3
.v6
->nexthdr
;
470 if (l4_hdr
!= exthdr
)
471 ipv6_skip_exthdr(skb
, exthdr
- skb
->data
,
472 &l4_proto_tmp
, &frag_off
);
473 } else if (skb
->protocol
== htons(ETH_P_IP
)) {
474 l4_proto_tmp
= l3
.v4
->protocol
;
479 *ol4_proto
= l4_proto_tmp
;
482 if (!skb
->encapsulation
) {
487 /* find inner header point */
488 l3
.hdr
= skb_inner_network_header(skb
);
489 l4_hdr
= skb_inner_transport_header(skb
);
491 if (l3
.v6
->version
== 6) {
492 exthdr
= l3
.hdr
+ sizeof(*l3
.v6
);
493 l4_proto_tmp
= l3
.v6
->nexthdr
;
494 if (l4_hdr
!= exthdr
)
495 ipv6_skip_exthdr(skb
, exthdr
- skb
->data
,
496 &l4_proto_tmp
, &frag_off
);
497 } else if (l3
.v4
->version
== 4) {
498 l4_proto_tmp
= l3
.v4
->protocol
;
501 *il4_proto
= l4_proto_tmp
;
506 static void hns3_set_l2l3l4_len(struct sk_buff
*skb
, u8 ol4_proto
,
507 u8 il4_proto
, u32
*type_cs_vlan_tso
,
508 u32
*ol_type_vlan_len_msec
)
518 struct gre_base_hdr
*gre
;
521 unsigned char *l2_hdr
;
522 u8 l4_proto
= ol4_proto
;
529 l3
.hdr
= skb_network_header(skb
);
530 l4
.hdr
= skb_transport_header(skb
);
532 /* compute L2 header size for normal packet, defined in 2 Bytes */
533 l2_len
= l3
.hdr
- skb
->data
;
534 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L2LEN_M
,
535 HNS3_TXD_L2LEN_S
, l2_len
>> 1);
538 if (skb
->encapsulation
) {
539 /* compute OL2 header size, defined in 2 Bytes */
541 hnae_set_field(*ol_type_vlan_len_msec
,
543 HNS3_TXD_L2LEN_S
, ol2_len
>> 1);
545 /* compute OL3 header size, defined in 4 Bytes */
546 ol3_len
= l4
.hdr
- l3
.hdr
;
547 hnae_set_field(*ol_type_vlan_len_msec
, HNS3_TXD_L3LEN_M
,
548 HNS3_TXD_L3LEN_S
, ol3_len
>> 2);
550 /* MAC in UDP, MAC in GRE (0x6558)*/
551 if ((ol4_proto
== IPPROTO_UDP
) || (ol4_proto
== IPPROTO_GRE
)) {
552 /* switch MAC header ptr from outer to inner header.*/
553 l2_hdr
= skb_inner_mac_header(skb
);
555 /* compute OL4 header size, defined in 4 Bytes. */
556 ol4_len
= l2_hdr
- l4
.hdr
;
557 hnae_set_field(*ol_type_vlan_len_msec
, HNS3_TXD_L4LEN_M
,
558 HNS3_TXD_L4LEN_S
, ol4_len
>> 2);
560 /* switch IP header ptr from outer to inner header */
561 l3
.hdr
= skb_inner_network_header(skb
);
563 /* compute inner l2 header size, defined in 2 Bytes. */
564 l2_len
= l3
.hdr
- l2_hdr
;
565 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L2LEN_M
,
566 HNS3_TXD_L2LEN_S
, l2_len
>> 1);
568 /* skb packet types not supported by hardware,
569 * txbd len fild doesn't be filled.
574 /* switch L4 header pointer from outer to inner */
575 l4
.hdr
= skb_inner_transport_header(skb
);
577 l4_proto
= il4_proto
;
580 /* compute inner(/normal) L3 header size, defined in 4 Bytes */
581 l3_len
= l4
.hdr
- l3
.hdr
;
582 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L3LEN_M
,
583 HNS3_TXD_L3LEN_S
, l3_len
>> 2);
585 /* compute inner(/normal) L4 header size, defined in 4 Bytes */
588 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L4LEN_M
,
589 HNS3_TXD_L4LEN_S
, l4
.tcp
->doff
);
592 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L4LEN_M
,
593 HNS3_TXD_L4LEN_S
, (sizeof(struct sctphdr
) >> 2));
596 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L4LEN_M
,
597 HNS3_TXD_L4LEN_S
, (sizeof(struct udphdr
) >> 2));
600 /* skb packet types not supported by hardware,
601 * txbd len fild doesn't be filled.
607 static int hns3_set_l3l4_type_csum(struct sk_buff
*skb
, u8 ol4_proto
,
608 u8 il4_proto
, u32
*type_cs_vlan_tso
,
609 u32
*ol_type_vlan_len_msec
)
616 u32 l4_proto
= ol4_proto
;
618 l3
.hdr
= skb_network_header(skb
);
620 /* define OL3 type and tunnel type(OL4).*/
621 if (skb
->encapsulation
) {
622 /* define outer network header type.*/
623 if (skb
->protocol
== htons(ETH_P_IP
)) {
625 hnae_set_field(*ol_type_vlan_len_msec
,
626 HNS3_TXD_OL3T_M
, HNS3_TXD_OL3T_S
,
627 HNS3_OL3T_IPV4_CSUM
);
629 hnae_set_field(*ol_type_vlan_len_msec
,
630 HNS3_TXD_OL3T_M
, HNS3_TXD_OL3T_S
,
631 HNS3_OL3T_IPV4_NO_CSUM
);
633 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
634 hnae_set_field(*ol_type_vlan_len_msec
, HNS3_TXD_OL3T_M
,
635 HNS3_TXD_OL3T_S
, HNS3_OL3T_IPV6
);
638 /* define tunnel type(OL4).*/
641 hnae_set_field(*ol_type_vlan_len_msec
,
644 HNS3_TUN_MAC_IN_UDP
);
647 hnae_set_field(*ol_type_vlan_len_msec
,
653 /* drop the skb tunnel packet if hardware don't support,
654 * because hardware can't calculate csum when TSO.
659 /* the stack computes the IP header already,
660 * driver calculate l4 checksum when not TSO.
662 skb_checksum_help(skb
);
666 l3
.hdr
= skb_inner_network_header(skb
);
667 l4_proto
= il4_proto
;
670 if (l3
.v4
->version
== 4) {
671 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L3T_M
,
672 HNS3_TXD_L3T_S
, HNS3_L3T_IPV4
);
674 /* the stack computes the IP header already, the only time we
675 * need the hardware to recompute it is in the case of TSO.
678 hnae_set_bit(*type_cs_vlan_tso
, HNS3_TXD_L3CS_B
, 1);
680 hnae_set_bit(*type_cs_vlan_tso
, HNS3_TXD_L4CS_B
, 1);
681 } else if (l3
.v6
->version
== 6) {
682 hnae_set_field(*type_cs_vlan_tso
, HNS3_TXD_L3T_M
,
683 HNS3_TXD_L3T_S
, HNS3_L3T_IPV6
);
684 hnae_set_bit(*type_cs_vlan_tso
, HNS3_TXD_L4CS_B
, 1);
689 hnae_set_field(*type_cs_vlan_tso
,
695 hnae_set_field(*type_cs_vlan_tso
,
701 hnae_set_field(*type_cs_vlan_tso
,
707 /* drop the skb tunnel packet if hardware don't support,
708 * because hardware can't calculate csum when TSO.
713 /* the stack computes the IP header already,
714 * driver calculate l4 checksum when not TSO.
716 skb_checksum_help(skb
);
723 static void hns3_set_txbd_baseinfo(u16
*bdtp_fe_sc_vld_ra_ri
, int frag_end
)
725 /* Config bd buffer end */
726 hnae_set_field(*bdtp_fe_sc_vld_ra_ri
, HNS3_TXD_BDTYPE_M
,
727 HNS3_TXD_BDTYPE_M
, 0);
728 hnae_set_bit(*bdtp_fe_sc_vld_ra_ri
, HNS3_TXD_FE_B
, !!frag_end
);
729 hnae_set_bit(*bdtp_fe_sc_vld_ra_ri
, HNS3_TXD_VLD_B
, 1);
730 hnae_set_field(*bdtp_fe_sc_vld_ra_ri
, HNS3_TXD_SC_M
, HNS3_TXD_SC_S
, 1);
733 static int hns3_fill_desc(struct hns3_enet_ring
*ring
, void *priv
,
734 int size
, dma_addr_t dma
, int frag_end
,
735 enum hns_desc_type type
)
737 struct hns3_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
738 struct hns3_desc
*desc
= &ring
->desc
[ring
->next_to_use
];
739 u32 ol_type_vlan_len_msec
= 0;
740 u16 bdtp_fe_sc_vld_ra_ri
= 0;
741 u32 type_cs_vlan_tso
= 0;
750 /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */
751 desc_cb
->priv
= priv
;
752 desc_cb
->length
= size
;
754 desc_cb
->type
= type
;
756 /* now, fill the descriptor */
757 desc
->addr
= cpu_to_le64(dma
);
758 desc
->tx
.send_size
= cpu_to_le16((u16
)size
);
759 hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri
, frag_end
);
760 desc
->tx
.bdtp_fe_sc_vld_ra_ri
= cpu_to_le16(bdtp_fe_sc_vld_ra_ri
);
762 if (type
== DESC_TYPE_SKB
) {
763 skb
= (struct sk_buff
*)priv
;
766 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
767 skb_reset_mac_len(skb
);
768 protocol
= skb
->protocol
;
771 if (protocol
== htons(ETH_P_8021Q
)) {
772 protocol
= vlan_get_protocol(skb
);
773 skb
->protocol
= protocol
;
775 ret
= hns3_get_l4_protocol(skb
, &ol4_proto
, &il4_proto
);
778 hns3_set_l2l3l4_len(skb
, ol4_proto
, il4_proto
,
780 &ol_type_vlan_len_msec
);
781 ret
= hns3_set_l3l4_type_csum(skb
, ol4_proto
, il4_proto
,
783 &ol_type_vlan_len_msec
);
787 ret
= hns3_set_tso(skb
, &paylen
, &mss
,
794 desc
->tx
.ol_type_vlan_len_msec
=
795 cpu_to_le32(ol_type_vlan_len_msec
);
796 desc
->tx
.type_cs_vlan_tso_len
=
797 cpu_to_le32(type_cs_vlan_tso
);
798 desc
->tx
.paylen
= cpu_to_le32(paylen
);
799 desc
->tx
.mss
= cpu_to_le16(mss
);
802 /* move ring pointer to next.*/
803 ring_ptr_move_fw(ring
, next_to_use
);
808 static int hns3_fill_desc_tso(struct hns3_enet_ring
*ring
, void *priv
,
809 int size
, dma_addr_t dma
, int frag_end
,
810 enum hns_desc_type type
)
812 unsigned int frag_buf_num
;
817 frag_buf_num
= (size
+ HNS3_MAX_BD_SIZE
- 1) / HNS3_MAX_BD_SIZE
;
818 sizeoflast
= size
% HNS3_MAX_BD_SIZE
;
819 sizeoflast
= sizeoflast
? sizeoflast
: HNS3_MAX_BD_SIZE
;
821 /* When the frag size is bigger than hardware, split this frag */
822 for (k
= 0; k
< frag_buf_num
; k
++) {
823 ret
= hns3_fill_desc(ring
, priv
,
824 (k
== frag_buf_num
- 1) ?
825 sizeoflast
: HNS3_MAX_BD_SIZE
,
826 dma
+ HNS3_MAX_BD_SIZE
* k
,
827 frag_end
&& (k
== frag_buf_num
- 1) ? 1 : 0,
828 (type
== DESC_TYPE_SKB
&& !k
) ?
829 DESC_TYPE_SKB
: DESC_TYPE_PAGE
);
837 static int hns3_nic_maybe_stop_tso(struct sk_buff
**out_skb
, int *bnum
,
838 struct hns3_enet_ring
*ring
)
840 struct sk_buff
*skb
= *out_skb
;
841 struct skb_frag_struct
*frag
;
848 size
= skb_headlen(skb
);
849 buf_num
= (size
+ HNS3_MAX_BD_SIZE
- 1) / HNS3_MAX_BD_SIZE
;
851 frag_num
= skb_shinfo(skb
)->nr_frags
;
852 for (i
= 0; i
< frag_num
; i
++) {
853 frag
= &skb_shinfo(skb
)->frags
[i
];
854 size
= skb_frag_size(frag
);
856 (size
+ HNS3_MAX_BD_SIZE
- 1) / HNS3_MAX_BD_SIZE
;
857 if (bdnum_for_frag
> HNS3_MAX_BD_PER_FRAG
)
860 buf_num
+= bdnum_for_frag
;
863 if (buf_num
> ring_space(ring
))
870 static int hns3_nic_maybe_stop_tx(struct sk_buff
**out_skb
, int *bnum
,
871 struct hns3_enet_ring
*ring
)
873 struct sk_buff
*skb
= *out_skb
;
876 /* No. of segments (plus a header) */
877 buf_num
= skb_shinfo(skb
)->nr_frags
+ 1;
879 if (buf_num
> ring_space(ring
))
887 static void hns_nic_dma_unmap(struct hns3_enet_ring
*ring
, int next_to_use_orig
)
889 struct device
*dev
= ring_to_dev(ring
);
892 for (i
= 0; i
< ring
->desc_num
; i
++) {
893 /* check if this is where we started */
894 if (ring
->next_to_use
== next_to_use_orig
)
897 /* unmap the descriptor dma address */
898 if (ring
->desc_cb
[ring
->next_to_use
].type
== DESC_TYPE_SKB
)
899 dma_unmap_single(dev
,
900 ring
->desc_cb
[ring
->next_to_use
].dma
,
901 ring
->desc_cb
[ring
->next_to_use
].length
,
905 ring
->desc_cb
[ring
->next_to_use
].dma
,
906 ring
->desc_cb
[ring
->next_to_use
].length
,
910 ring_ptr_move_bw(ring
, next_to_use
);
914 static netdev_tx_t
hns3_nic_net_xmit(struct sk_buff
*skb
,
915 struct net_device
*netdev
)
917 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
918 struct hns3_nic_ring_data
*ring_data
=
919 &tx_ring_data(priv
, skb
->queue_mapping
);
920 struct hns3_enet_ring
*ring
= ring_data
->ring
;
921 struct device
*dev
= priv
->dev
;
922 struct netdev_queue
*dev_queue
;
923 struct skb_frag_struct
*frag
;
924 int next_to_use_head
;
925 int next_to_use_frag
;
933 /* Prefetch the data used later */
936 switch (priv
->ops
.maybe_stop_tx(&skb
, &buf_num
, ring
)) {
938 u64_stats_update_begin(&ring
->syncp
);
939 ring
->stats
.tx_busy
++;
940 u64_stats_update_end(&ring
->syncp
);
942 goto out_net_tx_busy
;
944 u64_stats_update_begin(&ring
->syncp
);
945 ring
->stats
.sw_err_cnt
++;
946 u64_stats_update_end(&ring
->syncp
);
947 netdev_err(netdev
, "no memory to xmit!\n");
954 /* No. of segments (plus a header) */
955 seg_num
= skb_shinfo(skb
)->nr_frags
+ 1;
956 /* Fill the first part */
957 size
= skb_headlen(skb
);
959 next_to_use_head
= ring
->next_to_use
;
961 dma
= dma_map_single(dev
, skb
->data
, size
, DMA_TO_DEVICE
);
962 if (dma_mapping_error(dev
, dma
)) {
963 netdev_err(netdev
, "TX head DMA map failed\n");
964 ring
->stats
.sw_err_cnt
++;
968 ret
= priv
->ops
.fill_desc(ring
, skb
, size
, dma
, seg_num
== 1 ? 1 : 0,
971 goto head_dma_map_err
;
973 next_to_use_frag
= ring
->next_to_use
;
974 /* Fill the fragments */
975 for (i
= 1; i
< seg_num
; i
++) {
976 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
977 size
= skb_frag_size(frag
);
978 dma
= skb_frag_dma_map(dev
, frag
, 0, size
, DMA_TO_DEVICE
);
979 if (dma_mapping_error(dev
, dma
)) {
980 netdev_err(netdev
, "TX frag(%d) DMA map failed\n", i
);
981 ring
->stats
.sw_err_cnt
++;
982 goto frag_dma_map_err
;
984 ret
= priv
->ops
.fill_desc(ring
, skb_frag_page(frag
), size
, dma
,
985 seg_num
- 1 == i
? 1 : 0,
989 goto frag_dma_map_err
;
992 /* Complete translate all packets */
993 dev_queue
= netdev_get_tx_queue(netdev
, ring_data
->queue_index
);
994 netdev_tx_sent_queue(dev_queue
, skb
->len
);
996 wmb(); /* Commit all data before submit */
998 hnae_queue_xmit(ring
->tqp
, buf_num
);
1000 return NETDEV_TX_OK
;
1003 hns_nic_dma_unmap(ring
, next_to_use_frag
);
1006 hns_nic_dma_unmap(ring
, next_to_use_head
);
1009 dev_kfree_skb_any(skb
);
1010 return NETDEV_TX_OK
;
1013 netif_stop_subqueue(netdev
, ring_data
->queue_index
);
1014 smp_mb(); /* Commit all data before submit */
1016 return NETDEV_TX_BUSY
;
1019 static int hns3_nic_net_set_mac_address(struct net_device
*netdev
, void *p
)
1021 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1022 struct sockaddr
*mac_addr
= p
;
1025 if (!mac_addr
|| !is_valid_ether_addr((const u8
*)mac_addr
->sa_data
))
1026 return -EADDRNOTAVAIL
;
1028 ret
= h
->ae_algo
->ops
->set_mac_addr(h
, mac_addr
->sa_data
);
1030 netdev_err(netdev
, "set_mac_address fail, ret=%d!\n", ret
);
1034 ether_addr_copy(netdev
->dev_addr
, mac_addr
->sa_data
);
1039 static int hns3_nic_set_features(struct net_device
*netdev
,
1040 netdev_features_t features
)
1042 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
1044 if (features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) {
1045 priv
->ops
.fill_desc
= hns3_fill_desc_tso
;
1046 priv
->ops
.maybe_stop_tx
= hns3_nic_maybe_stop_tso
;
1048 priv
->ops
.fill_desc
= hns3_fill_desc
;
1049 priv
->ops
.maybe_stop_tx
= hns3_nic_maybe_stop_tx
;
1052 netdev
->features
= features
;
1057 hns3_nic_get_stats64(struct net_device
*netdev
, struct rtnl_link_stats64
*stats
)
1059 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
1060 int queue_num
= priv
->ae_handle
->kinfo
.num_tqps
;
1061 struct hns3_enet_ring
*ring
;
1069 for (idx
= 0; idx
< queue_num
; idx
++) {
1070 /* fetch the tx stats */
1071 ring
= priv
->ring_data
[idx
].ring
;
1073 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
1074 tx_bytes
+= ring
->stats
.tx_bytes
;
1075 tx_pkts
+= ring
->stats
.tx_pkts
;
1076 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
1078 /* fetch the rx stats */
1079 ring
= priv
->ring_data
[idx
+ queue_num
].ring
;
1081 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
1082 rx_bytes
+= ring
->stats
.rx_bytes
;
1083 rx_pkts
+= ring
->stats
.rx_pkts
;
1084 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
1087 stats
->tx_bytes
= tx_bytes
;
1088 stats
->tx_packets
= tx_pkts
;
1089 stats
->rx_bytes
= rx_bytes
;
1090 stats
->rx_packets
= rx_pkts
;
1092 stats
->rx_errors
= netdev
->stats
.rx_errors
;
1093 stats
->multicast
= netdev
->stats
.multicast
;
1094 stats
->rx_length_errors
= netdev
->stats
.rx_length_errors
;
1095 stats
->rx_crc_errors
= netdev
->stats
.rx_crc_errors
;
1096 stats
->rx_missed_errors
= netdev
->stats
.rx_missed_errors
;
1098 stats
->tx_errors
= netdev
->stats
.tx_errors
;
1099 stats
->rx_dropped
= netdev
->stats
.rx_dropped
;
1100 stats
->tx_dropped
= netdev
->stats
.tx_dropped
;
1101 stats
->collisions
= netdev
->stats
.collisions
;
1102 stats
->rx_over_errors
= netdev
->stats
.rx_over_errors
;
1103 stats
->rx_frame_errors
= netdev
->stats
.rx_frame_errors
;
1104 stats
->rx_fifo_errors
= netdev
->stats
.rx_fifo_errors
;
1105 stats
->tx_aborted_errors
= netdev
->stats
.tx_aborted_errors
;
1106 stats
->tx_carrier_errors
= netdev
->stats
.tx_carrier_errors
;
1107 stats
->tx_fifo_errors
= netdev
->stats
.tx_fifo_errors
;
1108 stats
->tx_heartbeat_errors
= netdev
->stats
.tx_heartbeat_errors
;
1109 stats
->tx_window_errors
= netdev
->stats
.tx_window_errors
;
1110 stats
->rx_compressed
= netdev
->stats
.rx_compressed
;
1111 stats
->tx_compressed
= netdev
->stats
.tx_compressed
;
1114 static void hns3_add_tunnel_port(struct net_device
*netdev
, u16 port
,
1115 enum hns3_udp_tnl_type type
)
1117 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
1118 struct hns3_udp_tunnel
*udp_tnl
= &priv
->udp_tnl
[type
];
1119 struct hnae3_handle
*h
= priv
->ae_handle
;
1121 if (udp_tnl
->used
&& udp_tnl
->dst_port
== port
) {
1126 if (udp_tnl
->used
) {
1128 "UDP tunnel [%d], port [%d] offload\n", type
, port
);
1132 udp_tnl
->dst_port
= port
;
1134 /* TBD send command to hardware to add port */
1135 if (h
->ae_algo
->ops
->add_tunnel_udp
)
1136 h
->ae_algo
->ops
->add_tunnel_udp(h
, port
);
1139 static void hns3_del_tunnel_port(struct net_device
*netdev
, u16 port
,
1140 enum hns3_udp_tnl_type type
)
1142 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
1143 struct hns3_udp_tunnel
*udp_tnl
= &priv
->udp_tnl
[type
];
1144 struct hnae3_handle
*h
= priv
->ae_handle
;
1146 if (!udp_tnl
->used
|| udp_tnl
->dst_port
!= port
) {
1148 "Invalid UDP tunnel port %d\n", port
);
1156 udp_tnl
->dst_port
= 0;
1157 /* TBD send command to hardware to del port */
1158 if (h
->ae_algo
->ops
->del_tunnel_udp
)
1159 h
->ae_algo
->ops
->del_tunnel_udp(h
, port
);
1162 /* hns3_nic_udp_tunnel_add - Get notifiacetion about UDP tunnel ports
1163 * @netdev: This physical ports's netdev
1164 * @ti: Tunnel information
1166 static void hns3_nic_udp_tunnel_add(struct net_device
*netdev
,
1167 struct udp_tunnel_info
*ti
)
1169 u16 port_n
= ntohs(ti
->port
);
1172 case UDP_TUNNEL_TYPE_VXLAN
:
1173 hns3_add_tunnel_port(netdev
, port_n
, HNS3_UDP_TNL_VXLAN
);
1175 case UDP_TUNNEL_TYPE_GENEVE
:
1176 hns3_add_tunnel_port(netdev
, port_n
, HNS3_UDP_TNL_GENEVE
);
1179 netdev_err(netdev
, "unsupported tunnel type %d\n", ti
->type
);
1184 static void hns3_nic_udp_tunnel_del(struct net_device
*netdev
,
1185 struct udp_tunnel_info
*ti
)
1187 u16 port_n
= ntohs(ti
->port
);
1190 case UDP_TUNNEL_TYPE_VXLAN
:
1191 hns3_del_tunnel_port(netdev
, port_n
, HNS3_UDP_TNL_VXLAN
);
1193 case UDP_TUNNEL_TYPE_GENEVE
:
1194 hns3_del_tunnel_port(netdev
, port_n
, HNS3_UDP_TNL_GENEVE
);
1201 static int hns3_setup_tc(struct net_device
*netdev
, u8 tc
)
1203 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1204 struct hnae3_knic_private_info
*kinfo
= &h
->kinfo
;
1208 if (tc
> HNAE3_MAX_TC
)
1211 if (kinfo
->num_tc
== tc
)
1218 netdev_reset_tc(netdev
);
1222 /* Set num_tc for netdev */
1223 ret
= netdev_set_num_tc(netdev
, tc
);
1227 /* Set per TC queues for the VSI */
1228 for (i
= 0; i
< HNAE3_MAX_TC
; i
++) {
1229 if (kinfo
->tc_info
[i
].enable
)
1230 netdev_set_tc_queue(netdev
,
1231 kinfo
->tc_info
[i
].tc
,
1232 kinfo
->tc_info
[i
].tqp_count
,
1233 kinfo
->tc_info
[i
].tqp_offset
);
1239 static int hns3_nic_setup_tc(struct net_device
*dev
, enum tc_setup_type type
,
1242 struct tc_mqprio_qopt
*mqprio
= type_data
;
1244 if (type
!= TC_SETUP_MQPRIO
)
1247 return hns3_setup_tc(dev
, mqprio
->num_tc
);
1250 static int hns3_vlan_rx_add_vid(struct net_device
*netdev
,
1251 __be16 proto
, u16 vid
)
1253 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1256 if (h
->ae_algo
->ops
->set_vlan_filter
)
1257 ret
= h
->ae_algo
->ops
->set_vlan_filter(h
, proto
, vid
, false);
1262 static int hns3_vlan_rx_kill_vid(struct net_device
*netdev
,
1263 __be16 proto
, u16 vid
)
1265 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1268 if (h
->ae_algo
->ops
->set_vlan_filter
)
1269 ret
= h
->ae_algo
->ops
->set_vlan_filter(h
, proto
, vid
, true);
1274 static int hns3_ndo_set_vf_vlan(struct net_device
*netdev
, int vf
, u16 vlan
,
1275 u8 qos
, __be16 vlan_proto
)
1277 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1280 if (h
->ae_algo
->ops
->set_vf_vlan_filter
)
1281 ret
= h
->ae_algo
->ops
->set_vf_vlan_filter(h
, vf
, vlan
,
1287 static int hns3_nic_change_mtu(struct net_device
*netdev
, int new_mtu
)
1289 struct hnae3_handle
*h
= hns3_get_handle(netdev
);
1290 bool if_running
= netif_running(netdev
);
1293 if (!h
->ae_algo
->ops
->set_mtu
)
1296 /* if this was called with netdev up then bring netdevice down */
1298 (void)hns3_nic_net_stop(netdev
);
1302 ret
= h
->ae_algo
->ops
->set_mtu(h
, new_mtu
);
1304 netdev_err(netdev
, "failed to change MTU in hardware %d\n",
1309 /* if the netdev was running earlier, bring it up again */
1310 if (if_running
&& hns3_nic_net_open(netdev
))
1316 static const struct net_device_ops hns3_nic_netdev_ops
= {
1317 .ndo_open
= hns3_nic_net_open
,
1318 .ndo_stop
= hns3_nic_net_stop
,
1319 .ndo_start_xmit
= hns3_nic_net_xmit
,
1320 .ndo_set_mac_address
= hns3_nic_net_set_mac_address
,
1321 .ndo_change_mtu
= hns3_nic_change_mtu
,
1322 .ndo_set_features
= hns3_nic_set_features
,
1323 .ndo_get_stats64
= hns3_nic_get_stats64
,
1324 .ndo_setup_tc
= hns3_nic_setup_tc
,
1325 .ndo_set_rx_mode
= hns3_nic_set_rx_mode
,
1326 .ndo_udp_tunnel_add
= hns3_nic_udp_tunnel_add
,
1327 .ndo_udp_tunnel_del
= hns3_nic_udp_tunnel_del
,
1328 .ndo_vlan_rx_add_vid
= hns3_vlan_rx_add_vid
,
1329 .ndo_vlan_rx_kill_vid
= hns3_vlan_rx_kill_vid
,
1330 .ndo_set_vf_vlan
= hns3_ndo_set_vf_vlan
,
1333 /* hns3_probe - Device initialization routine
1334 * @pdev: PCI device information struct
1335 * @ent: entry in hns3_pci_tbl
1337 * hns3_probe initializes a PF identified by a pci_dev structure.
1338 * The OS initialization, configuring of the PF private structure,
1339 * and a hardware reset occur.
1341 * Returns 0 on success, negative on failure
1343 static int hns3_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1345 struct hnae3_ae_dev
*ae_dev
;
1348 ae_dev
= devm_kzalloc(&pdev
->dev
, sizeof(*ae_dev
),
1355 ae_dev
->pdev
= pdev
;
1356 ae_dev
->flag
= ent
->driver_data
;
1357 ae_dev
->dev_type
= HNAE3_DEV_KNIC
;
1358 pci_set_drvdata(pdev
, ae_dev
);
1360 return hnae3_register_ae_dev(ae_dev
);
1363 /* hns3_remove - Device removal routine
1364 * @pdev: PCI device information struct
1366 static void hns3_remove(struct pci_dev
*pdev
)
1368 struct hnae3_ae_dev
*ae_dev
= pci_get_drvdata(pdev
);
1370 hnae3_unregister_ae_dev(ae_dev
);
1372 devm_kfree(&pdev
->dev
, ae_dev
);
1374 pci_set_drvdata(pdev
, NULL
);
1377 static struct pci_driver hns3_driver
= {
1378 .name
= hns3_driver_name
,
1379 .id_table
= hns3_pci_tbl
,
1380 .probe
= hns3_probe
,
1381 .remove
= hns3_remove
,
1384 /* set default feature to hns3 */
1385 static void hns3_set_default_feature(struct net_device
*netdev
)
1387 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
1389 netdev
->hw_enc_features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1390 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1391 NETIF_F_GRO
| NETIF_F_TSO
| NETIF_F_TSO6
| NETIF_F_GSO_GRE
|
1392 NETIF_F_GSO_GRE_CSUM
| NETIF_F_GSO_UDP_TUNNEL
|
1393 NETIF_F_GSO_UDP_TUNNEL_CSUM
;
1395 netdev
->hw_enc_features
|= NETIF_F_TSO_MANGLEID
;
1397 netdev
->gso_partial_features
|= NETIF_F_GSO_GRE_CSUM
;
1399 netdev
->features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1400 NETIF_F_HW_VLAN_CTAG_FILTER
|
1401 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1402 NETIF_F_GRO
| NETIF_F_TSO
| NETIF_F_TSO6
| NETIF_F_GSO_GRE
|
1403 NETIF_F_GSO_GRE_CSUM
| NETIF_F_GSO_UDP_TUNNEL
|
1404 NETIF_F_GSO_UDP_TUNNEL_CSUM
;
1406 netdev
->vlan_features
|=
1407 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
| NETIF_F_RXCSUM
|
1408 NETIF_F_SG
| NETIF_F_GSO
| NETIF_F_GRO
|
1409 NETIF_F_TSO
| NETIF_F_TSO6
| NETIF_F_GSO_GRE
|
1410 NETIF_F_GSO_GRE_CSUM
| NETIF_F_GSO_UDP_TUNNEL
|
1411 NETIF_F_GSO_UDP_TUNNEL_CSUM
;
1413 netdev
->hw_features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1414 NETIF_F_HW_VLAN_CTAG_FILTER
|
1415 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1416 NETIF_F_GRO
| NETIF_F_TSO
| NETIF_F_TSO6
| NETIF_F_GSO_GRE
|
1417 NETIF_F_GSO_GRE_CSUM
| NETIF_F_GSO_UDP_TUNNEL
|
1418 NETIF_F_GSO_UDP_TUNNEL_CSUM
;
1421 static int hns3_alloc_buffer(struct hns3_enet_ring
*ring
,
1422 struct hns3_desc_cb
*cb
)
1424 unsigned int order
= hnae_page_order(ring
);
1427 p
= dev_alloc_pages(order
);
1432 cb
->page_offset
= 0;
1434 cb
->buf
= page_address(p
);
1435 cb
->length
= hnae_page_size(ring
);
1436 cb
->type
= DESC_TYPE_PAGE
;
1438 memset(cb
->buf
, 0, cb
->length
);
1443 static void hns3_free_buffer(struct hns3_enet_ring
*ring
,
1444 struct hns3_desc_cb
*cb
)
1446 if (cb
->type
== DESC_TYPE_SKB
)
1447 dev_kfree_skb_any((struct sk_buff
*)cb
->priv
);
1448 else if (!HNAE3_IS_TX_RING(ring
))
1449 put_page((struct page
*)cb
->priv
);
1450 memset(cb
, 0, sizeof(*cb
));
1453 static int hns3_map_buffer(struct hns3_enet_ring
*ring
, struct hns3_desc_cb
*cb
)
1455 cb
->dma
= dma_map_page(ring_to_dev(ring
), cb
->priv
, 0,
1456 cb
->length
, ring_to_dma_dir(ring
));
1458 if (dma_mapping_error(ring_to_dev(ring
), cb
->dma
))
1464 static void hns3_unmap_buffer(struct hns3_enet_ring
*ring
,
1465 struct hns3_desc_cb
*cb
)
1467 if (cb
->type
== DESC_TYPE_SKB
)
1468 dma_unmap_single(ring_to_dev(ring
), cb
->dma
, cb
->length
,
1469 ring_to_dma_dir(ring
));
1471 dma_unmap_page(ring_to_dev(ring
), cb
->dma
, cb
->length
,
1472 ring_to_dma_dir(ring
));
1475 static void hns3_buffer_detach(struct hns3_enet_ring
*ring
, int i
)
1477 hns3_unmap_buffer(ring
, &ring
->desc_cb
[i
]);
1478 ring
->desc
[i
].addr
= 0;
1481 static void hns3_free_buffer_detach(struct hns3_enet_ring
*ring
, int i
)
1483 struct hns3_desc_cb
*cb
= &ring
->desc_cb
[i
];
1485 if (!ring
->desc_cb
[i
].dma
)
1488 hns3_buffer_detach(ring
, i
);
1489 hns3_free_buffer(ring
, cb
);
1492 static void hns3_free_buffers(struct hns3_enet_ring
*ring
)
1496 for (i
= 0; i
< ring
->desc_num
; i
++)
1497 hns3_free_buffer_detach(ring
, i
);
1500 /* free desc along with its attached buffer */
1501 static void hns3_free_desc(struct hns3_enet_ring
*ring
)
1503 hns3_free_buffers(ring
);
1505 dma_unmap_single(ring_to_dev(ring
), ring
->desc_dma_addr
,
1506 ring
->desc_num
* sizeof(ring
->desc
[0]),
1508 ring
->desc_dma_addr
= 0;
1513 static int hns3_alloc_desc(struct hns3_enet_ring
*ring
)
1515 int size
= ring
->desc_num
* sizeof(ring
->desc
[0]);
1517 ring
->desc
= kzalloc(size
, GFP_KERNEL
);
1521 ring
->desc_dma_addr
= dma_map_single(ring_to_dev(ring
), ring
->desc
,
1522 size
, DMA_BIDIRECTIONAL
);
1523 if (dma_mapping_error(ring_to_dev(ring
), ring
->desc_dma_addr
)) {
1524 ring
->desc_dma_addr
= 0;
1533 static int hns3_reserve_buffer_map(struct hns3_enet_ring
*ring
,
1534 struct hns3_desc_cb
*cb
)
1538 ret
= hns3_alloc_buffer(ring
, cb
);
1542 ret
= hns3_map_buffer(ring
, cb
);
1549 hns3_free_buffers(ring
);
1554 static int hns3_alloc_buffer_attach(struct hns3_enet_ring
*ring
, int i
)
1556 int ret
= hns3_reserve_buffer_map(ring
, &ring
->desc_cb
[i
]);
1561 ring
->desc
[i
].addr
= cpu_to_le64(ring
->desc_cb
[i
].dma
);
1566 /* Allocate memory for raw pkg, and map with dma */
1567 static int hns3_alloc_ring_buffers(struct hns3_enet_ring
*ring
)
1571 for (i
= 0; i
< ring
->desc_num
; i
++) {
1572 ret
= hns3_alloc_buffer_attach(ring
, i
);
1574 goto out_buffer_fail
;
1580 for (j
= i
- 1; j
>= 0; j
--)
1581 hns3_free_buffer_detach(ring
, j
);
1585 /* detach a in-used buffer and replace with a reserved one */
1586 static void hns3_replace_buffer(struct hns3_enet_ring
*ring
, int i
,
1587 struct hns3_desc_cb
*res_cb
)
1589 hns3_map_buffer(ring
, &ring
->desc_cb
[i
]);
1590 ring
->desc_cb
[i
] = *res_cb
;
1591 ring
->desc
[i
].addr
= cpu_to_le64(ring
->desc_cb
[i
].dma
);
1594 static void hns3_reuse_buffer(struct hns3_enet_ring
*ring
, int i
)
1596 ring
->desc_cb
[i
].reuse_flag
= 0;
1597 ring
->desc
[i
].addr
= cpu_to_le64(ring
->desc_cb
[i
].dma
1598 + ring
->desc_cb
[i
].page_offset
);
1601 static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring
*ring
, int *bytes
,
1604 struct hns3_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
1606 (*pkts
) += (desc_cb
->type
== DESC_TYPE_SKB
);
1607 (*bytes
) += desc_cb
->length
;
1608 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
1609 hns3_free_buffer_detach(ring
, ring
->next_to_clean
);
1611 ring_ptr_move_fw(ring
, next_to_clean
);
1614 static int is_valid_clean_head(struct hns3_enet_ring
*ring
, int h
)
1616 int u
= ring
->next_to_use
;
1617 int c
= ring
->next_to_clean
;
1619 if (unlikely(h
> ring
->desc_num
))
1622 return u
> c
? (h
> c
&& h
<= u
) : (h
> c
|| h
<= u
);
1625 int hns3_clean_tx_ring(struct hns3_enet_ring
*ring
, int budget
)
1627 struct net_device
*netdev
= ring
->tqp
->handle
->kinfo
.netdev
;
1628 struct netdev_queue
*dev_queue
;
1632 head
= readl_relaxed(ring
->tqp
->io_base
+ HNS3_RING_TX_RING_HEAD_REG
);
1633 rmb(); /* Make sure head is ready before touch any data */
1635 if (is_ring_empty(ring
) || head
== ring
->next_to_clean
)
1636 return 0; /* no data to poll */
1638 if (!is_valid_clean_head(ring
, head
)) {
1639 netdev_err(netdev
, "wrong head (%d, %d-%d)\n", head
,
1640 ring
->next_to_use
, ring
->next_to_clean
);
1642 u64_stats_update_begin(&ring
->syncp
);
1643 ring
->stats
.io_err_cnt
++;
1644 u64_stats_update_end(&ring
->syncp
);
1650 while (head
!= ring
->next_to_clean
&& budget
) {
1651 hns3_nic_reclaim_one_desc(ring
, &bytes
, &pkts
);
1652 /* Issue prefetch for next Tx descriptor */
1653 prefetch(&ring
->desc_cb
[ring
->next_to_clean
]);
1657 ring
->tqp_vector
->tx_group
.total_bytes
+= bytes
;
1658 ring
->tqp_vector
->tx_group
.total_packets
+= pkts
;
1660 u64_stats_update_begin(&ring
->syncp
);
1661 ring
->stats
.tx_bytes
+= bytes
;
1662 ring
->stats
.tx_pkts
+= pkts
;
1663 u64_stats_update_end(&ring
->syncp
);
1665 dev_queue
= netdev_get_tx_queue(netdev
, ring
->tqp
->tqp_index
);
1666 netdev_tx_completed_queue(dev_queue
, pkts
, bytes
);
1668 if (unlikely(pkts
&& netif_carrier_ok(netdev
) &&
1669 (ring_space(ring
) > HNS3_MAX_BD_PER_PKT
))) {
1670 /* Make sure that anybody stopping the queue after this
1671 * sees the new next_to_clean.
1674 if (netif_tx_queue_stopped(dev_queue
)) {
1675 netif_tx_wake_queue(dev_queue
);
1676 ring
->stats
.restart_queue
++;
1683 static int hns3_desc_unused(struct hns3_enet_ring
*ring
)
1685 int ntc
= ring
->next_to_clean
;
1686 int ntu
= ring
->next_to_use
;
1688 return ((ntc
>= ntu
) ? 0 : ring
->desc_num
) + ntc
- ntu
;
1692 hns3_nic_alloc_rx_buffers(struct hns3_enet_ring
*ring
, int cleand_count
)
1694 struct hns3_desc_cb
*desc_cb
;
1695 struct hns3_desc_cb res_cbs
;
1698 for (i
= 0; i
< cleand_count
; i
++) {
1699 desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
1700 if (desc_cb
->reuse_flag
) {
1701 u64_stats_update_begin(&ring
->syncp
);
1702 ring
->stats
.reuse_pg_cnt
++;
1703 u64_stats_update_end(&ring
->syncp
);
1705 hns3_reuse_buffer(ring
, ring
->next_to_use
);
1707 ret
= hns3_reserve_buffer_map(ring
, &res_cbs
);
1709 u64_stats_update_begin(&ring
->syncp
);
1710 ring
->stats
.sw_err_cnt
++;
1711 u64_stats_update_end(&ring
->syncp
);
1713 netdev_err(ring
->tqp
->handle
->kinfo
.netdev
,
1714 "hnae reserve buffer map failed.\n");
1717 hns3_replace_buffer(ring
, ring
->next_to_use
, &res_cbs
);
1720 ring_ptr_move_fw(ring
, next_to_use
);
1723 wmb(); /* Make all data has been write before submit */
1724 writel_relaxed(i
, ring
->tqp
->io_base
+ HNS3_RING_RX_RING_HEAD_REG
);
1727 /* hns3_nic_get_headlen - determine size of header for LRO/GRO
1728 * @data: pointer to the start of the headers
1729 * @max: total length of section to find headers in
1731 * This function is meant to determine the length of headers that will
1732 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
1733 * motivation of doing this is to only perform one pull for IPv4 TCP
1734 * packets so that we can do basic things like calculating the gso_size
1735 * based on the average data per packet.
1737 static unsigned int hns3_nic_get_headlen(unsigned char *data
, u32 flag
,
1738 unsigned int max_size
)
1740 unsigned char *network
;
1743 /* This should never happen, but better safe than sorry */
1744 if (max_size
< ETH_HLEN
)
1747 /* Initialize network frame pointer */
1750 /* Set first protocol and move network header forward */
1751 network
+= ETH_HLEN
;
1753 /* Handle any vlan tag if present */
1754 if (hnae_get_field(flag
, HNS3_RXD_VLAN_M
, HNS3_RXD_VLAN_S
)
1755 == HNS3_RX_FLAG_VLAN_PRESENT
) {
1756 if ((typeof(max_size
))(network
- data
) > (max_size
- VLAN_HLEN
))
1759 network
+= VLAN_HLEN
;
1762 /* Handle L3 protocols */
1763 if (hnae_get_field(flag
, HNS3_RXD_L3ID_M
, HNS3_RXD_L3ID_S
)
1764 == HNS3_RX_FLAG_L3ID_IPV4
) {
1765 if ((typeof(max_size
))(network
- data
) >
1766 (max_size
- sizeof(struct iphdr
)))
1769 /* Access ihl as a u8 to avoid unaligned access on ia64 */
1770 hlen
= (network
[0] & 0x0F) << 2;
1772 /* Verify hlen meets minimum size requirements */
1773 if (hlen
< sizeof(struct iphdr
))
1774 return network
- data
;
1776 /* Record next protocol if header is present */
1777 } else if (hnae_get_field(flag
, HNS3_RXD_L3ID_M
, HNS3_RXD_L3ID_S
)
1778 == HNS3_RX_FLAG_L3ID_IPV6
) {
1779 if ((typeof(max_size
))(network
- data
) >
1780 (max_size
- sizeof(struct ipv6hdr
)))
1783 /* Record next protocol */
1784 hlen
= sizeof(struct ipv6hdr
);
1786 return network
- data
;
1789 /* Relocate pointer to start of L4 header */
1792 /* Finally sort out TCP/UDP */
1793 if (hnae_get_field(flag
, HNS3_RXD_L4ID_M
, HNS3_RXD_L4ID_S
)
1794 == HNS3_RX_FLAG_L4ID_TCP
) {
1795 if ((typeof(max_size
))(network
- data
) >
1796 (max_size
- sizeof(struct tcphdr
)))
1799 /* Access doff as a u8 to avoid unaligned access on ia64 */
1800 hlen
= (network
[12] & 0xF0) >> 2;
1802 /* Verify hlen meets minimum size requirements */
1803 if (hlen
< sizeof(struct tcphdr
))
1804 return network
- data
;
1807 } else if (hnae_get_field(flag
, HNS3_RXD_L4ID_M
, HNS3_RXD_L4ID_S
)
1808 == HNS3_RX_FLAG_L4ID_UDP
) {
1809 if ((typeof(max_size
))(network
- data
) >
1810 (max_size
- sizeof(struct udphdr
)))
1813 network
+= sizeof(struct udphdr
);
1816 /* If everything has gone correctly network should be the
1817 * data section of the packet and will be the end of the header.
1818 * If not then it probably represents the end of the last recognized
1821 if ((typeof(max_size
))(network
- data
) < max_size
)
1822 return network
- data
;
1827 static void hns3_nic_reuse_page(struct sk_buff
*skb
, int i
,
1828 struct hns3_enet_ring
*ring
, int pull_len
,
1829 struct hns3_desc_cb
*desc_cb
)
1831 struct hns3_desc
*desc
;
1836 twobufs
= ((PAGE_SIZE
< 8192) &&
1837 hnae_buf_size(ring
) == HNS3_BUFFER_SIZE_2048
);
1839 desc
= &ring
->desc
[ring
->next_to_clean
];
1840 size
= le16_to_cpu(desc
->rx
.size
);
1843 truesize
= hnae_buf_size(ring
);
1845 truesize
= ALIGN(size
, L1_CACHE_BYTES
);
1846 last_offset
= hnae_page_size(ring
) - hnae_buf_size(ring
);
1849 skb_add_rx_frag(skb
, i
, desc_cb
->priv
, desc_cb
->page_offset
+ pull_len
,
1850 size
- pull_len
, truesize
- pull_len
);
1852 /* Avoid re-using remote pages,flag default unreuse */
1853 if (unlikely(page_to_nid(desc_cb
->priv
) != numa_node_id()))
1857 /* If we are only owner of page we can reuse it */
1858 if (likely(page_count(desc_cb
->priv
) == 1)) {
1859 /* Flip page offset to other buffer */
1860 desc_cb
->page_offset
^= truesize
;
1862 desc_cb
->reuse_flag
= 1;
1863 /* bump ref count on page before it is given*/
1864 get_page(desc_cb
->priv
);
1869 /* Move offset up to the next cache line */
1870 desc_cb
->page_offset
+= truesize
;
1872 if (desc_cb
->page_offset
<= last_offset
) {
1873 desc_cb
->reuse_flag
= 1;
1874 /* Bump ref count on page before it is given*/
1875 get_page(desc_cb
->priv
);
1879 static void hns3_rx_checksum(struct hns3_enet_ring
*ring
, struct sk_buff
*skb
,
1880 struct hns3_desc
*desc
)
1882 struct net_device
*netdev
= ring
->tqp
->handle
->kinfo
.netdev
;
1883 int l3_type
, l4_type
;
1888 bd_base_info
= le32_to_cpu(desc
->rx
.bd_base_info
);
1889 l234info
= le32_to_cpu(desc
->rx
.l234_info
);
1891 skb
->ip_summed
= CHECKSUM_NONE
;
1893 skb_checksum_none_assert(skb
);
1895 if (!(netdev
->features
& NETIF_F_RXCSUM
))
1898 /* check if hardware has done checksum */
1899 if (!hnae_get_bit(bd_base_info
, HNS3_RXD_L3L4P_B
))
1902 if (unlikely(hnae_get_bit(l234info
, HNS3_RXD_L3E_B
) ||
1903 hnae_get_bit(l234info
, HNS3_RXD_L4E_B
) ||
1904 hnae_get_bit(l234info
, HNS3_RXD_OL3E_B
) ||
1905 hnae_get_bit(l234info
, HNS3_RXD_OL4E_B
))) {
1906 netdev_err(netdev
, "L3/L4 error pkt\n");
1907 u64_stats_update_begin(&ring
->syncp
);
1908 ring
->stats
.l3l4_csum_err
++;
1909 u64_stats_update_end(&ring
->syncp
);
1914 l3_type
= hnae_get_field(l234info
, HNS3_RXD_L3ID_M
,
1916 l4_type
= hnae_get_field(l234info
, HNS3_RXD_L4ID_M
,
1919 ol4_type
= hnae_get_field(l234info
, HNS3_RXD_OL4ID_M
, HNS3_RXD_OL4ID_S
);
1921 case HNS3_OL4_TYPE_MAC_IN_UDP
:
1922 case HNS3_OL4_TYPE_NVGRE
:
1923 skb
->csum_level
= 1;
1924 case HNS3_OL4_TYPE_NO_TUN
:
1925 /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */
1926 if (l3_type
== HNS3_L3_TYPE_IPV4
||
1927 (l3_type
== HNS3_L3_TYPE_IPV6
&&
1928 (l4_type
== HNS3_L4_TYPE_UDP
||
1929 l4_type
== HNS3_L4_TYPE_TCP
||
1930 l4_type
== HNS3_L4_TYPE_SCTP
)))
1931 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1936 static int hns3_handle_rx_bd(struct hns3_enet_ring
*ring
,
1937 struct sk_buff
**out_skb
, int *out_bnum
)
1939 struct net_device
*netdev
= ring
->tqp
->handle
->kinfo
.netdev
;
1940 struct hns3_desc_cb
*desc_cb
;
1941 struct hns3_desc
*desc
;
1942 struct sk_buff
*skb
;
1950 desc
= &ring
->desc
[ring
->next_to_clean
];
1951 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
1955 length
= le16_to_cpu(desc
->rx
.pkt_len
);
1956 bd_base_info
= le32_to_cpu(desc
->rx
.bd_base_info
);
1957 l234info
= le32_to_cpu(desc
->rx
.l234_info
);
1959 /* Check valid BD */
1960 if (!hnae_get_bit(bd_base_info
, HNS3_RXD_VLD_B
))
1963 va
= (unsigned char *)desc_cb
->buf
+ desc_cb
->page_offset
;
1965 /* Prefetch first cache line of first page
1966 * Idea is to cache few bytes of the header of the packet. Our L1 Cache
1967 * line size is 64B so need to prefetch twice to make it 128B. But in
1968 * actual we can have greater size of caches with 128B Level 1 cache
1969 * lines. In such a case, single fetch would suffice to cache in the
1970 * relevant part of the header.
1973 #if L1_CACHE_BYTES < 128
1974 prefetch(va
+ L1_CACHE_BYTES
);
1977 skb
= *out_skb
= napi_alloc_skb(&ring
->tqp_vector
->napi
,
1979 if (unlikely(!skb
)) {
1980 netdev_err(netdev
, "alloc rx skb fail\n");
1982 u64_stats_update_begin(&ring
->syncp
);
1983 ring
->stats
.sw_err_cnt
++;
1984 u64_stats_update_end(&ring
->syncp
);
1989 prefetchw(skb
->data
);
1992 if (length
<= HNS3_RX_HEAD_SIZE
) {
1993 memcpy(__skb_put(skb
, length
), va
, ALIGN(length
, sizeof(long)));
1995 /* We can reuse buffer as-is, just make sure it is local */
1996 if (likely(page_to_nid(desc_cb
->priv
) == numa_node_id()))
1997 desc_cb
->reuse_flag
= 1;
1998 else /* This page cannot be reused so discard it */
1999 put_page(desc_cb
->priv
);
2001 ring_ptr_move_fw(ring
, next_to_clean
);
2003 u64_stats_update_begin(&ring
->syncp
);
2004 ring
->stats
.seg_pkt_cnt
++;
2005 u64_stats_update_end(&ring
->syncp
);
2007 pull_len
= hns3_nic_get_headlen(va
, l234info
,
2009 memcpy(__skb_put(skb
, pull_len
), va
,
2010 ALIGN(pull_len
, sizeof(long)));
2012 hns3_nic_reuse_page(skb
, 0, ring
, pull_len
, desc_cb
);
2013 ring_ptr_move_fw(ring
, next_to_clean
);
2015 while (!hnae_get_bit(bd_base_info
, HNS3_RXD_FE_B
)) {
2016 desc
= &ring
->desc
[ring
->next_to_clean
];
2017 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
2018 bd_base_info
= le32_to_cpu(desc
->rx
.bd_base_info
);
2019 hns3_nic_reuse_page(skb
, bnum
, ring
, 0, desc_cb
);
2020 ring_ptr_move_fw(ring
, next_to_clean
);
2027 if (unlikely(!hnae_get_bit(bd_base_info
, HNS3_RXD_VLD_B
))) {
2028 netdev_err(netdev
, "no valid bd,%016llx,%016llx\n",
2029 ((u64
*)desc
)[0], ((u64
*)desc
)[1]);
2030 u64_stats_update_begin(&ring
->syncp
);
2031 ring
->stats
.non_vld_descs
++;
2032 u64_stats_update_end(&ring
->syncp
);
2034 dev_kfree_skb_any(skb
);
2038 if (unlikely((!desc
->rx
.pkt_len
) ||
2039 hnae_get_bit(l234info
, HNS3_RXD_TRUNCAT_B
))) {
2040 netdev_err(netdev
, "truncated pkt\n");
2041 u64_stats_update_begin(&ring
->syncp
);
2042 ring
->stats
.err_pkt_len
++;
2043 u64_stats_update_end(&ring
->syncp
);
2045 dev_kfree_skb_any(skb
);
2049 if (unlikely(hnae_get_bit(l234info
, HNS3_RXD_L2E_B
))) {
2050 netdev_err(netdev
, "L2 error pkt\n");
2051 u64_stats_update_begin(&ring
->syncp
);
2052 ring
->stats
.l2_err
++;
2053 u64_stats_update_end(&ring
->syncp
);
2055 dev_kfree_skb_any(skb
);
2059 u64_stats_update_begin(&ring
->syncp
);
2060 ring
->stats
.rx_pkts
++;
2061 ring
->stats
.rx_bytes
+= skb
->len
;
2062 u64_stats_update_end(&ring
->syncp
);
2064 ring
->tqp_vector
->rx_group
.total_bytes
+= skb
->len
;
2066 hns3_rx_checksum(ring
, skb
, desc
);
2070 static int hns3_clean_rx_ring(struct hns3_enet_ring
*ring
, int budget
)
2072 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
2073 struct net_device
*netdev
= ring
->tqp
->handle
->kinfo
.netdev
;
2074 int recv_pkts
, recv_bds
, clean_count
, err
;
2075 int unused_count
= hns3_desc_unused(ring
);
2076 struct sk_buff
*skb
= NULL
;
2079 num
= readl_relaxed(ring
->tqp
->io_base
+ HNS3_RING_RX_RING_FBDNUM_REG
);
2080 rmb(); /* Make sure num taken effect before the other data is touched */
2082 recv_pkts
= 0, recv_bds
= 0, clean_count
= 0;
2083 num
-= unused_count
;
2085 while (recv_pkts
< budget
&& recv_bds
< num
) {
2086 /* Reuse or realloc buffers */
2087 if (clean_count
+ unused_count
>= RCB_NOF_ALLOC_RX_BUFF_ONCE
) {
2088 hns3_nic_alloc_rx_buffers(ring
,
2089 clean_count
+ unused_count
);
2091 unused_count
= hns3_desc_unused(ring
);
2095 err
= hns3_handle_rx_bd(ring
, &skb
, &bnum
);
2096 if (unlikely(!skb
)) /* This fault cannot be repaired */
2100 clean_count
+= bnum
;
2101 if (unlikely(err
)) { /* Do jump the err */
2106 /* Do update ip stack process */
2107 skb
->protocol
= eth_type_trans(skb
, netdev
);
2108 (void)napi_gro_receive(&ring
->tqp_vector
->napi
, skb
);
2114 /* Make all data has been write before submit */
2115 if (clean_count
+ unused_count
> 0)
2116 hns3_nic_alloc_rx_buffers(ring
,
2117 clean_count
+ unused_count
);
2122 static bool hns3_get_new_int_gl(struct hns3_enet_ring_group
*ring_group
)
2124 #define HNS3_RX_ULTRA_PACKET_RATE 40000
2125 enum hns3_flow_level_range new_flow_level
;
2126 struct hns3_enet_tqp_vector
*tqp_vector
;
2127 int packets_per_secs
;
2128 int bytes_per_usecs
;
2132 if (!ring_group
->int_gl
)
2135 if (ring_group
->total_packets
== 0) {
2136 ring_group
->int_gl
= HNS3_INT_GL_50K
;
2137 ring_group
->flow_level
= HNS3_FLOW_LOW
;
2141 /* Simple throttlerate management
2142 * 0-10MB/s lower (50000 ints/s)
2143 * 10-20MB/s middle (20000 ints/s)
2144 * 20-1249MB/s high (18000 ints/s)
2145 * > 40000pps ultra (8000 ints/s)
2147 new_flow_level
= ring_group
->flow_level
;
2148 new_int_gl
= ring_group
->int_gl
;
2149 tqp_vector
= ring_group
->ring
->tqp_vector
;
2150 usecs
= (ring_group
->int_gl
<< 1);
2151 bytes_per_usecs
= ring_group
->total_bytes
/ usecs
;
2152 /* 1000000 microseconds */
2153 packets_per_secs
= ring_group
->total_packets
* 1000000 / usecs
;
2155 switch (new_flow_level
) {
2157 if (bytes_per_usecs
> 10)
2158 new_flow_level
= HNS3_FLOW_MID
;
2161 if (bytes_per_usecs
> 20)
2162 new_flow_level
= HNS3_FLOW_HIGH
;
2163 else if (bytes_per_usecs
<= 10)
2164 new_flow_level
= HNS3_FLOW_LOW
;
2166 case HNS3_FLOW_HIGH
:
2167 case HNS3_FLOW_ULTRA
:
2169 if (bytes_per_usecs
<= 20)
2170 new_flow_level
= HNS3_FLOW_MID
;
2174 if ((packets_per_secs
> HNS3_RX_ULTRA_PACKET_RATE
) &&
2175 (&tqp_vector
->rx_group
== ring_group
))
2176 new_flow_level
= HNS3_FLOW_ULTRA
;
2178 switch (new_flow_level
) {
2180 new_int_gl
= HNS3_INT_GL_50K
;
2183 new_int_gl
= HNS3_INT_GL_20K
;
2185 case HNS3_FLOW_HIGH
:
2186 new_int_gl
= HNS3_INT_GL_18K
;
2188 case HNS3_FLOW_ULTRA
:
2189 new_int_gl
= HNS3_INT_GL_8K
;
2195 ring_group
->total_bytes
= 0;
2196 ring_group
->total_packets
= 0;
2197 ring_group
->flow_level
= new_flow_level
;
2198 if (new_int_gl
!= ring_group
->int_gl
) {
2199 ring_group
->int_gl
= new_int_gl
;
2205 static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector
*tqp_vector
)
2207 u16 rx_int_gl
, tx_int_gl
;
2210 rx
= hns3_get_new_int_gl(&tqp_vector
->rx_group
);
2211 tx
= hns3_get_new_int_gl(&tqp_vector
->tx_group
);
2212 rx_int_gl
= tqp_vector
->rx_group
.int_gl
;
2213 tx_int_gl
= tqp_vector
->tx_group
.int_gl
;
2215 if (rx_int_gl
> tx_int_gl
) {
2216 tqp_vector
->tx_group
.int_gl
= rx_int_gl
;
2217 tqp_vector
->tx_group
.flow_level
=
2218 tqp_vector
->rx_group
.flow_level
;
2219 hns3_set_vector_coalesc_gl(tqp_vector
, rx_int_gl
);
2221 tqp_vector
->rx_group
.int_gl
= tx_int_gl
;
2222 tqp_vector
->rx_group
.flow_level
=
2223 tqp_vector
->tx_group
.flow_level
;
2224 hns3_set_vector_coalesc_gl(tqp_vector
, tx_int_gl
);
2229 static int hns3_nic_common_poll(struct napi_struct
*napi
, int budget
)
2231 struct hns3_enet_ring
*ring
;
2232 int rx_pkt_total
= 0;
2234 struct hns3_enet_tqp_vector
*tqp_vector
=
2235 container_of(napi
, struct hns3_enet_tqp_vector
, napi
);
2236 bool clean_complete
= true;
2239 /* Since the actual Tx work is minimal, we can give the Tx a larger
2240 * budget and be more aggressive about cleaning up the Tx descriptors.
2242 hns3_for_each_ring(ring
, tqp_vector
->tx_group
) {
2243 if (!hns3_clean_tx_ring(ring
, budget
))
2244 clean_complete
= false;
2247 /* make sure rx ring budget not smaller than 1 */
2248 rx_budget
= max(budget
/ tqp_vector
->num_tqps
, 1);
2250 hns3_for_each_ring(ring
, tqp_vector
->rx_group
) {
2251 int rx_cleaned
= hns3_clean_rx_ring(ring
, rx_budget
);
2253 if (rx_cleaned
>= rx_budget
)
2254 clean_complete
= false;
2256 rx_pkt_total
+= rx_cleaned
;
2259 tqp_vector
->rx_group
.total_packets
+= rx_pkt_total
;
2261 if (!clean_complete
)
2264 napi_complete(napi
);
2265 hns3_update_new_int_gl(tqp_vector
);
2266 hns3_mask_vector_irq(tqp_vector
, 1);
2268 return rx_pkt_total
;
2271 static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector
*tqp_vector
,
2272 struct hnae3_ring_chain_node
*head
)
2274 struct pci_dev
*pdev
= tqp_vector
->handle
->pdev
;
2275 struct hnae3_ring_chain_node
*cur_chain
= head
;
2276 struct hnae3_ring_chain_node
*chain
;
2277 struct hns3_enet_ring
*tx_ring
;
2278 struct hns3_enet_ring
*rx_ring
;
2280 tx_ring
= tqp_vector
->tx_group
.ring
;
2282 cur_chain
->tqp_index
= tx_ring
->tqp
->tqp_index
;
2283 hnae_set_bit(cur_chain
->flag
, HNAE3_RING_TYPE_B
,
2284 HNAE3_RING_TYPE_TX
);
2286 cur_chain
->next
= NULL
;
2288 while (tx_ring
->next
) {
2289 tx_ring
= tx_ring
->next
;
2291 chain
= devm_kzalloc(&pdev
->dev
, sizeof(*chain
),
2296 cur_chain
->next
= chain
;
2297 chain
->tqp_index
= tx_ring
->tqp
->tqp_index
;
2298 hnae_set_bit(chain
->flag
, HNAE3_RING_TYPE_B
,
2299 HNAE3_RING_TYPE_TX
);
2305 rx_ring
= tqp_vector
->rx_group
.ring
;
2306 if (!tx_ring
&& rx_ring
) {
2307 cur_chain
->next
= NULL
;
2308 cur_chain
->tqp_index
= rx_ring
->tqp
->tqp_index
;
2309 hnae_set_bit(cur_chain
->flag
, HNAE3_RING_TYPE_B
,
2310 HNAE3_RING_TYPE_RX
);
2312 rx_ring
= rx_ring
->next
;
2316 chain
= devm_kzalloc(&pdev
->dev
, sizeof(*chain
), GFP_KERNEL
);
2320 cur_chain
->next
= chain
;
2321 chain
->tqp_index
= rx_ring
->tqp
->tqp_index
;
2322 hnae_set_bit(chain
->flag
, HNAE3_RING_TYPE_B
,
2323 HNAE3_RING_TYPE_RX
);
2326 rx_ring
= rx_ring
->next
;
2332 static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector
*tqp_vector
,
2333 struct hnae3_ring_chain_node
*head
)
2335 struct pci_dev
*pdev
= tqp_vector
->handle
->pdev
;
2336 struct hnae3_ring_chain_node
*chain_tmp
, *chain
;
2341 chain_tmp
= chain
->next
;
2342 devm_kfree(&pdev
->dev
, chain
);
2347 static void hns3_add_ring_to_group(struct hns3_enet_ring_group
*group
,
2348 struct hns3_enet_ring
*ring
)
2350 ring
->next
= group
->ring
;
2356 static int hns3_nic_init_vector_data(struct hns3_nic_priv
*priv
)
2358 struct hnae3_ring_chain_node vector_ring_chain
;
2359 struct hnae3_handle
*h
= priv
->ae_handle
;
2360 struct hns3_enet_tqp_vector
*tqp_vector
;
2361 struct hnae3_vector_info
*vector
;
2362 struct pci_dev
*pdev
= h
->pdev
;
2363 u16 tqp_num
= h
->kinfo
.num_tqps
;
2368 /* RSS size, cpu online and vector_num should be the same */
2369 /* Should consider 2p/4p later */
2370 vector_num
= min_t(u16
, num_online_cpus(), tqp_num
);
2371 vector
= devm_kcalloc(&pdev
->dev
, vector_num
, sizeof(*vector
),
2376 vector_num
= h
->ae_algo
->ops
->get_vector(h
, vector_num
, vector
);
2378 priv
->vector_num
= vector_num
;
2379 priv
->tqp_vector
= (struct hns3_enet_tqp_vector
*)
2380 devm_kcalloc(&pdev
->dev
, vector_num
, sizeof(*priv
->tqp_vector
),
2382 if (!priv
->tqp_vector
)
2385 for (i
= 0; i
< tqp_num
; i
++) {
2386 u16 vector_i
= i
% vector_num
;
2388 tqp_vector
= &priv
->tqp_vector
[vector_i
];
2390 hns3_add_ring_to_group(&tqp_vector
->tx_group
,
2391 priv
->ring_data
[i
].ring
);
2393 hns3_add_ring_to_group(&tqp_vector
->rx_group
,
2394 priv
->ring_data
[i
+ tqp_num
].ring
);
2396 tqp_vector
->idx
= vector_i
;
2397 tqp_vector
->mask_addr
= vector
[vector_i
].io_addr
;
2398 tqp_vector
->vector_irq
= vector
[vector_i
].vector
;
2399 tqp_vector
->num_tqps
++;
2401 priv
->ring_data
[i
].ring
->tqp_vector
= tqp_vector
;
2402 priv
->ring_data
[i
+ tqp_num
].ring
->tqp_vector
= tqp_vector
;
2405 for (i
= 0; i
< vector_num
; i
++) {
2406 tqp_vector
= &priv
->tqp_vector
[i
];
2408 tqp_vector
->rx_group
.total_bytes
= 0;
2409 tqp_vector
->rx_group
.total_packets
= 0;
2410 tqp_vector
->tx_group
.total_bytes
= 0;
2411 tqp_vector
->tx_group
.total_packets
= 0;
2412 hns3_vector_gl_rl_init(tqp_vector
);
2413 tqp_vector
->handle
= h
;
2415 ret
= hns3_get_vector_ring_chain(tqp_vector
,
2416 &vector_ring_chain
);
2420 ret
= h
->ae_algo
->ops
->map_ring_to_vector(h
,
2421 tqp_vector
->vector_irq
, &vector_ring_chain
);
2425 hns3_free_vector_ring_chain(tqp_vector
, &vector_ring_chain
);
2427 netif_napi_add(priv
->netdev
, &tqp_vector
->napi
,
2428 hns3_nic_common_poll
, NAPI_POLL_WEIGHT
);
2432 devm_kfree(&pdev
->dev
, vector
);
2436 static int hns3_nic_uninit_vector_data(struct hns3_nic_priv
*priv
)
2438 struct hnae3_ring_chain_node vector_ring_chain
;
2439 struct hnae3_handle
*h
= priv
->ae_handle
;
2440 struct hns3_enet_tqp_vector
*tqp_vector
;
2441 struct pci_dev
*pdev
= h
->pdev
;
2444 for (i
= 0; i
< priv
->vector_num
; i
++) {
2445 tqp_vector
= &priv
->tqp_vector
[i
];
2447 ret
= hns3_get_vector_ring_chain(tqp_vector
,
2448 &vector_ring_chain
);
2452 ret
= h
->ae_algo
->ops
->unmap_ring_from_vector(h
,
2453 tqp_vector
->vector_irq
, &vector_ring_chain
);
2457 hns3_free_vector_ring_chain(tqp_vector
, &vector_ring_chain
);
2459 if (priv
->tqp_vector
[i
].irq_init_flag
== HNS3_VECTOR_INITED
) {
2460 (void)irq_set_affinity_hint(
2461 priv
->tqp_vector
[i
].vector_irq
,
2463 devm_free_irq(&pdev
->dev
,
2464 priv
->tqp_vector
[i
].vector_irq
,
2465 &priv
->tqp_vector
[i
]);
2468 priv
->ring_data
[i
].ring
->irq_init_flag
= HNS3_VECTOR_NOT_INITED
;
2470 netif_napi_del(&priv
->tqp_vector
[i
].napi
);
2473 devm_kfree(&pdev
->dev
, priv
->tqp_vector
);
2478 static int hns3_ring_get_cfg(struct hnae3_queue
*q
, struct hns3_nic_priv
*priv
,
2481 struct hns3_nic_ring_data
*ring_data
= priv
->ring_data
;
2482 int queue_num
= priv
->ae_handle
->kinfo
.num_tqps
;
2483 struct pci_dev
*pdev
= priv
->ae_handle
->pdev
;
2484 struct hns3_enet_ring
*ring
;
2486 ring
= devm_kzalloc(&pdev
->dev
, sizeof(*ring
), GFP_KERNEL
);
2490 if (ring_type
== HNAE3_RING_TYPE_TX
) {
2491 ring_data
[q
->tqp_index
].ring
= ring
;
2492 ring
->io_base
= (u8 __iomem
*)q
->io_base
+ HNS3_TX_REG_OFFSET
;
2494 ring_data
[q
->tqp_index
+ queue_num
].ring
= ring
;
2495 ring
->io_base
= q
->io_base
;
2498 hnae_set_bit(ring
->flag
, HNAE3_RING_TYPE_B
, ring_type
);
2500 ring_data
[q
->tqp_index
].queue_index
= q
->tqp_index
;
2504 ring
->desc_cb
= NULL
;
2505 ring
->dev
= priv
->dev
;
2506 ring
->desc_dma_addr
= 0;
2507 ring
->buf_size
= q
->buf_size
;
2508 ring
->desc_num
= q
->desc_num
;
2509 ring
->next_to_use
= 0;
2510 ring
->next_to_clean
= 0;
2515 static int hns3_queue_to_ring(struct hnae3_queue
*tqp
,
2516 struct hns3_nic_priv
*priv
)
2520 ret
= hns3_ring_get_cfg(tqp
, priv
, HNAE3_RING_TYPE_TX
);
2524 ret
= hns3_ring_get_cfg(tqp
, priv
, HNAE3_RING_TYPE_RX
);
2531 static int hns3_get_ring_config(struct hns3_nic_priv
*priv
)
2533 struct hnae3_handle
*h
= priv
->ae_handle
;
2534 struct pci_dev
*pdev
= h
->pdev
;
2537 priv
->ring_data
= devm_kzalloc(&pdev
->dev
, h
->kinfo
.num_tqps
*
2538 sizeof(*priv
->ring_data
) * 2,
2540 if (!priv
->ring_data
)
2543 for (i
= 0; i
< h
->kinfo
.num_tqps
; i
++) {
2544 ret
= hns3_queue_to_ring(h
->kinfo
.tqp
[i
], priv
);
2551 devm_kfree(&pdev
->dev
, priv
->ring_data
);
2555 static int hns3_alloc_ring_memory(struct hns3_enet_ring
*ring
)
2559 if (ring
->desc_num
<= 0 || ring
->buf_size
<= 0)
2562 ring
->desc_cb
= kcalloc(ring
->desc_num
, sizeof(ring
->desc_cb
[0]),
2564 if (!ring
->desc_cb
) {
2569 ret
= hns3_alloc_desc(ring
);
2571 goto out_with_desc_cb
;
2573 if (!HNAE3_IS_TX_RING(ring
)) {
2574 ret
= hns3_alloc_ring_buffers(ring
);
2582 hns3_free_desc(ring
);
2584 kfree(ring
->desc_cb
);
2585 ring
->desc_cb
= NULL
;
2590 static void hns3_fini_ring(struct hns3_enet_ring
*ring
)
2592 hns3_free_desc(ring
);
2593 kfree(ring
->desc_cb
);
2594 ring
->desc_cb
= NULL
;
2595 ring
->next_to_clean
= 0;
2596 ring
->next_to_use
= 0;
2599 int hns3_buf_size2type(u32 buf_size
)
2605 bd_size_type
= HNS3_BD_SIZE_512_TYPE
;
2608 bd_size_type
= HNS3_BD_SIZE_1024_TYPE
;
2611 bd_size_type
= HNS3_BD_SIZE_2048_TYPE
;
2614 bd_size_type
= HNS3_BD_SIZE_4096_TYPE
;
2617 bd_size_type
= HNS3_BD_SIZE_2048_TYPE
;
2620 return bd_size_type
;
2623 static void hns3_init_ring_hw(struct hns3_enet_ring
*ring
)
2625 dma_addr_t dma
= ring
->desc_dma_addr
;
2626 struct hnae3_queue
*q
= ring
->tqp
;
2628 if (!HNAE3_IS_TX_RING(ring
)) {
2629 hns3_write_dev(q
, HNS3_RING_RX_RING_BASEADDR_L_REG
,
2631 hns3_write_dev(q
, HNS3_RING_RX_RING_BASEADDR_H_REG
,
2632 (u32
)((dma
>> 31) >> 1));
2634 hns3_write_dev(q
, HNS3_RING_RX_RING_BD_LEN_REG
,
2635 hns3_buf_size2type(ring
->buf_size
));
2636 hns3_write_dev(q
, HNS3_RING_RX_RING_BD_NUM_REG
,
2637 ring
->desc_num
/ 8 - 1);
2640 hns3_write_dev(q
, HNS3_RING_TX_RING_BASEADDR_L_REG
,
2642 hns3_write_dev(q
, HNS3_RING_TX_RING_BASEADDR_H_REG
,
2643 (u32
)((dma
>> 31) >> 1));
2645 hns3_write_dev(q
, HNS3_RING_TX_RING_BD_LEN_REG
,
2646 hns3_buf_size2type(ring
->buf_size
));
2647 hns3_write_dev(q
, HNS3_RING_TX_RING_BD_NUM_REG
,
2648 ring
->desc_num
/ 8 - 1);
2652 static int hns3_init_all_ring(struct hns3_nic_priv
*priv
)
2654 struct hnae3_handle
*h
= priv
->ae_handle
;
2655 int ring_num
= h
->kinfo
.num_tqps
* 2;
2659 for (i
= 0; i
< ring_num
; i
++) {
2660 ret
= hns3_alloc_ring_memory(priv
->ring_data
[i
].ring
);
2663 "Alloc ring memory fail! ret=%d\n", ret
);
2664 goto out_when_alloc_ring_memory
;
2667 hns3_init_ring_hw(priv
->ring_data
[i
].ring
);
2669 u64_stats_init(&priv
->ring_data
[i
].ring
->syncp
);
2674 out_when_alloc_ring_memory
:
2675 for (j
= i
- 1; j
>= 0; j
--)
2676 hns3_fini_ring(priv
->ring_data
[i
].ring
);
2681 static int hns3_uninit_all_ring(struct hns3_nic_priv
*priv
)
2683 struct hnae3_handle
*h
= priv
->ae_handle
;
2686 for (i
= 0; i
< h
->kinfo
.num_tqps
; i
++) {
2687 if (h
->ae_algo
->ops
->reset_queue
)
2688 h
->ae_algo
->ops
->reset_queue(h
, i
);
2690 hns3_fini_ring(priv
->ring_data
[i
].ring
);
2691 hns3_fini_ring(priv
->ring_data
[i
+ h
->kinfo
.num_tqps
].ring
);
2697 /* Set mac addr if it is configured. or leave it to the AE driver */
2698 static void hns3_init_mac_addr(struct net_device
*netdev
)
2700 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
2701 struct hnae3_handle
*h
= priv
->ae_handle
;
2702 u8 mac_addr_temp
[ETH_ALEN
];
2704 if (h
->ae_algo
->ops
->get_mac_addr
) {
2705 h
->ae_algo
->ops
->get_mac_addr(h
, mac_addr_temp
);
2706 ether_addr_copy(netdev
->dev_addr
, mac_addr_temp
);
2709 /* Check if the MAC address is valid, if not get a random one */
2710 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2711 eth_hw_addr_random(netdev
);
2712 dev_warn(priv
->dev
, "using random MAC address %pM\n",
2716 if (h
->ae_algo
->ops
->set_mac_addr
)
2717 h
->ae_algo
->ops
->set_mac_addr(h
, netdev
->dev_addr
);
2721 static void hns3_nic_set_priv_ops(struct net_device
*netdev
)
2723 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
2725 if ((netdev
->features
& NETIF_F_TSO
) ||
2726 (netdev
->features
& NETIF_F_TSO6
)) {
2727 priv
->ops
.fill_desc
= hns3_fill_desc_tso
;
2728 priv
->ops
.maybe_stop_tx
= hns3_nic_maybe_stop_tso
;
2730 priv
->ops
.fill_desc
= hns3_fill_desc
;
2731 priv
->ops
.maybe_stop_tx
= hns3_nic_maybe_stop_tx
;
2735 static int hns3_client_init(struct hnae3_handle
*handle
)
2737 struct pci_dev
*pdev
= handle
->pdev
;
2738 struct hns3_nic_priv
*priv
;
2739 struct net_device
*netdev
;
2742 netdev
= alloc_etherdev_mq(sizeof(struct hns3_nic_priv
),
2743 handle
->kinfo
.num_tqps
);
2747 priv
= netdev_priv(netdev
);
2748 priv
->dev
= &pdev
->dev
;
2749 priv
->netdev
= netdev
;
2750 priv
->ae_handle
= handle
;
2752 handle
->kinfo
.netdev
= netdev
;
2753 handle
->priv
= (void *)priv
;
2755 hns3_init_mac_addr(netdev
);
2757 hns3_set_default_feature(netdev
);
2759 netdev
->watchdog_timeo
= HNS3_TX_TIMEOUT
;
2760 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
2761 netdev
->netdev_ops
= &hns3_nic_netdev_ops
;
2762 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2763 hns3_ethtool_set_ops(netdev
);
2764 hns3_nic_set_priv_ops(netdev
);
2766 /* Carrier off reporting is important to ethtool even BEFORE open */
2767 netif_carrier_off(netdev
);
2769 ret
= hns3_get_ring_config(priv
);
2772 goto out_get_ring_cfg
;
2775 ret
= hns3_nic_init_vector_data(priv
);
2778 goto out_init_vector_data
;
2781 ret
= hns3_init_all_ring(priv
);
2784 goto out_init_ring_data
;
2787 ret
= register_netdev(netdev
);
2789 dev_err(priv
->dev
, "probe register netdev fail!\n");
2790 goto out_reg_netdev_fail
;
2793 hns3_dcbnl_setup(handle
);
2795 /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */
2796 netdev
->max_mtu
= HNS3_MAX_MTU
- (ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
);
2800 out_reg_netdev_fail
:
2802 (void)hns3_nic_uninit_vector_data(priv
);
2803 priv
->ring_data
= NULL
;
2804 out_init_vector_data
:
2806 priv
->ae_handle
= NULL
;
2807 free_netdev(netdev
);
2811 static void hns3_client_uninit(struct hnae3_handle
*handle
, bool reset
)
2813 struct net_device
*netdev
= handle
->kinfo
.netdev
;
2814 struct hns3_nic_priv
*priv
= netdev_priv(netdev
);
2817 if (netdev
->reg_state
!= NETREG_UNINITIALIZED
)
2818 unregister_netdev(netdev
);
2820 ret
= hns3_nic_uninit_vector_data(priv
);
2822 netdev_err(netdev
, "uninit vector error\n");
2824 ret
= hns3_uninit_all_ring(priv
);
2826 netdev_err(netdev
, "uninit ring error\n");
2828 priv
->ring_data
= NULL
;
2830 free_netdev(netdev
);
2833 static void hns3_link_status_change(struct hnae3_handle
*handle
, bool linkup
)
2835 struct net_device
*netdev
= handle
->kinfo
.netdev
;
2841 netif_carrier_on(netdev
);
2842 netif_tx_wake_all_queues(netdev
);
2843 netdev_info(netdev
, "link up\n");
2845 netif_carrier_off(netdev
);
2846 netif_tx_stop_all_queues(netdev
);
2847 netdev_info(netdev
, "link down\n");
2851 static int hns3_client_setup_tc(struct hnae3_handle
*handle
, u8 tc
)
2853 struct hnae3_knic_private_info
*kinfo
= &handle
->kinfo
;
2854 struct net_device
*ndev
= kinfo
->netdev
;
2859 if (tc
> HNAE3_MAX_TC
)
2865 if_running
= netif_running(ndev
);
2867 ret
= netdev_set_num_tc(ndev
, tc
);
2872 (void)hns3_nic_net_stop(ndev
);
2876 ret
= (kinfo
->dcb_ops
&& kinfo
->dcb_ops
->map_update
) ?
2877 kinfo
->dcb_ops
->map_update(handle
) : -EOPNOTSUPP
;
2882 netdev_reset_tc(ndev
);
2886 for (i
= 0; i
< HNAE3_MAX_TC
; i
++) {
2887 struct hnae3_tc_info
*tc_info
= &kinfo
->tc_info
[i
];
2889 if (tc_info
->enable
)
2890 netdev_set_tc_queue(ndev
,
2893 tc_info
->tqp_offset
);
2896 for (i
= 0; i
< HNAE3_MAX_USER_PRIO
; i
++) {
2897 netdev_set_prio_tc_map(ndev
, i
,
2902 ret
= hns3_nic_set_real_num_queue(ndev
);
2906 (void)hns3_nic_net_open(ndev
);
2911 const struct hnae3_client_ops client_ops
= {
2912 .init_instance
= hns3_client_init
,
2913 .uninit_instance
= hns3_client_uninit
,
2914 .link_status_change
= hns3_link_status_change
,
2915 .setup_tc
= hns3_client_setup_tc
,
2918 /* hns3_init_module - Driver registration routine
2919 * hns3_init_module is the first routine called when the driver is
2920 * loaded. All it does is register with the PCI subsystem.
2922 static int __init
hns3_init_module(void)
2926 pr_info("%s: %s - version\n", hns3_driver_name
, hns3_driver_string
);
2927 pr_info("%s: %s\n", hns3_driver_name
, hns3_copyright
);
2929 client
.type
= HNAE3_CLIENT_KNIC
;
2930 snprintf(client
.name
, HNAE3_CLIENT_NAME_LENGTH
- 1, "%s",
2933 client
.ops
= &client_ops
;
2935 ret
= hnae3_register_client(&client
);
2939 ret
= pci_register_driver(&hns3_driver
);
2941 hnae3_unregister_client(&client
);
2945 module_init(hns3_init_module
);
2947 /* hns3_exit_module - Driver exit cleanup routine
2948 * hns3_exit_module is called just before the driver is removed
2951 static void __exit
hns3_exit_module(void)
2953 pci_unregister_driver(&hns3_driver
);
2954 hnae3_unregister_client(&client
);
2956 module_exit(hns3_exit_module
);
2958 MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver");
2959 MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
2960 MODULE_LICENSE("GPL");
2961 MODULE_ALIAS("pci:hns-nic");