1 #include <linux/netdevice.h>
2 #include <linux/if_vlan.h>
4 #include <linux/ipv6.h>
8 #define QLCNIC_MAC_HASH(MAC)\
9 ((((MAC) & 0x70000) >> 0x10) | (((MAC) & 0x70000000000ULL) >> 0x25))
11 #define TX_ETHER_PKT 0x01
12 #define TX_TCP_PKT 0x02
13 #define TX_UDP_PKT 0x03
14 #define TX_IP_PKT 0x04
15 #define TX_TCP_LSO 0x05
16 #define TX_TCP_LSO6 0x06
17 #define TX_TCPV6_PKT 0x0b
18 #define TX_UDPV6_PKT 0x0c
19 #define FLAGS_VLAN_TAGGED 0x10
20 #define FLAGS_VLAN_OOB 0x40
22 #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
23 (cmd_desc)->vlan_TCI = cpu_to_le16(v);
24 #define qlcnic_set_cmd_desc_port(cmd_desc, var) \
25 ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
26 #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
27 ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
29 #define qlcnic_set_tx_port(_desc, _port) \
30 ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
32 #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
33 ((_desc)->flags_opcode |= \
34 cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
36 #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
37 ((_desc)->nfrags__length = \
38 cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
40 /* owner bits of status_desc */
41 #define STATUS_OWNER_HOST (0x1ULL << 56)
42 #define STATUS_OWNER_PHANTOM (0x2ULL << 56)
45 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
46 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
47 53-55 desc_cnt, 56-57 owner, 58-63 opcode
49 #define qlcnic_get_sts_port(sts_data) \
51 #define qlcnic_get_sts_status(sts_data) \
52 (((sts_data) >> 4) & 0x0F)
53 #define qlcnic_get_sts_type(sts_data) \
54 (((sts_data) >> 8) & 0x0F)
55 #define qlcnic_get_sts_totallength(sts_data) \
56 (((sts_data) >> 12) & 0xFFFF)
57 #define qlcnic_get_sts_refhandle(sts_data) \
58 (((sts_data) >> 28) & 0xFFFF)
59 #define qlcnic_get_sts_prot(sts_data) \
60 (((sts_data) >> 44) & 0x0F)
61 #define qlcnic_get_sts_pkt_offset(sts_data) \
62 (((sts_data) >> 48) & 0x1F)
63 #define qlcnic_get_sts_desc_cnt(sts_data) \
64 (((sts_data) >> 53) & 0x7)
65 #define qlcnic_get_sts_opcode(sts_data) \
66 (((sts_data) >> 58) & 0x03F)
68 #define qlcnic_get_lro_sts_refhandle(sts_data) \
69 ((sts_data) & 0x07FFF)
70 #define qlcnic_get_lro_sts_length(sts_data) \
71 (((sts_data) >> 16) & 0x0FFFF)
72 #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
73 (((sts_data) >> 32) & 0x0FF)
74 #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
75 (((sts_data) >> 40) & 0x0FF)
76 #define qlcnic_get_lro_sts_timestamp(sts_data) \
77 (((sts_data) >> 48) & 0x1)
78 #define qlcnic_get_lro_sts_type(sts_data) \
79 (((sts_data) >> 49) & 0x7)
80 #define qlcnic_get_lro_sts_push_flag(sts_data) \
81 (((sts_data) >> 52) & 0x1)
82 #define qlcnic_get_lro_sts_seq_number(sts_data) \
83 ((sts_data) & 0x0FFFFFFFF)
84 #define qlcnic_get_lro_sts_mss(sts_data1) \
85 ((sts_data1 >> 32) & 0x0FFFF)
87 /* opcode field in status_desc */
88 #define QLCNIC_SYN_OFFLOAD 0x03
89 #define QLCNIC_RXPKT_DESC 0x04
90 #define QLCNIC_OLD_RXPKT_DESC 0x3f
91 #define QLCNIC_RESPONSE_DESC 0x05
92 #define QLCNIC_LRO_DESC 0x12
94 /* for status field in status_desc */
95 #define STATUS_CKSUM_LOOP 0
96 #define STATUS_CKSUM_OK 2
98 static void qlcnic_change_filter(struct qlcnic_adapter
*adapter
,
99 u64 uaddr
, __le16 vlan_id
,
100 struct qlcnic_host_tx_ring
*tx_ring
)
102 struct cmd_desc_type0
*hwdesc
;
103 struct qlcnic_nic_req
*req
;
104 struct qlcnic_mac_req
*mac_req
;
105 struct qlcnic_vlan_req
*vlan_req
;
109 producer
= tx_ring
->producer
;
110 hwdesc
= &tx_ring
->desc_head
[tx_ring
->producer
];
112 req
= (struct qlcnic_nic_req
*)hwdesc
;
113 memset(req
, 0, sizeof(struct qlcnic_nic_req
));
114 req
->qhdr
= cpu_to_le64(QLCNIC_REQUEST
<< 23);
116 word
= QLCNIC_MAC_EVENT
| ((u64
)(adapter
->portnum
) << 16);
117 req
->req_hdr
= cpu_to_le64(word
);
119 mac_req
= (struct qlcnic_mac_req
*)&(req
->words
[0]);
120 mac_req
->op
= vlan_id
? QLCNIC_MAC_VLAN_ADD
: QLCNIC_MAC_ADD
;
121 memcpy(mac_req
->mac_addr
, &uaddr
, ETH_ALEN
);
123 vlan_req
= (struct qlcnic_vlan_req
*)&req
->words
[1];
124 vlan_req
->vlan_id
= vlan_id
;
126 tx_ring
->producer
= get_next_index(producer
, tx_ring
->num_desc
);
130 static void qlcnic_send_filter(struct qlcnic_adapter
*adapter
,
131 struct qlcnic_host_tx_ring
*tx_ring
,
132 struct cmd_desc_type0
*first_desc
,
135 struct ethhdr
*phdr
= (struct ethhdr
*)(skb
->data
);
136 struct qlcnic_filter
*fil
, *tmp_fil
;
137 struct hlist_node
*tmp_hnode
, *n
;
138 struct hlist_head
*head
;
143 if (ether_addr_equal(phdr
->h_source
, adapter
->mac_addr
))
146 if (adapter
->fhash
.fnum
>= adapter
->fhash
.fmax
)
149 /* Only NPAR capable devices support vlan based learning*/
150 if (adapter
->flags
& QLCNIC_ESWITCH_ENABLED
)
151 vlan_id
= first_desc
->vlan_TCI
;
152 memcpy(&src_addr
, phdr
->h_source
, ETH_ALEN
);
153 hindex
= QLCNIC_MAC_HASH(src_addr
) & (QLCNIC_LB_MAX_FILTERS
- 1);
154 head
= &(adapter
->fhash
.fhead
[hindex
]);
156 hlist_for_each_entry_safe(tmp_fil
, tmp_hnode
, n
, head
, fnode
) {
157 if (!memcmp(tmp_fil
->faddr
, &src_addr
, ETH_ALEN
) &&
158 tmp_fil
->vlan_id
== vlan_id
) {
160 if (jiffies
> (QLCNIC_READD_AGE
* HZ
+ tmp_fil
->ftime
))
161 qlcnic_change_filter(adapter
, src_addr
, vlan_id
,
163 tmp_fil
->ftime
= jiffies
;
168 fil
= kzalloc(sizeof(struct qlcnic_filter
), GFP_ATOMIC
);
172 qlcnic_change_filter(adapter
, src_addr
, vlan_id
, tx_ring
);
174 fil
->ftime
= jiffies
;
175 fil
->vlan_id
= vlan_id
;
176 memcpy(fil
->faddr
, &src_addr
, ETH_ALEN
);
178 spin_lock(&adapter
->mac_learn_lock
);
180 hlist_add_head(&(fil
->fnode
), head
);
181 adapter
->fhash
.fnum
++;
183 spin_unlock(&adapter
->mac_learn_lock
);
186 static int qlcnic_tx_pkt(struct qlcnic_adapter
*adapter
,
187 struct cmd_desc_type0
*first_desc
, struct sk_buff
*skb
)
189 u8 l4proto
, opcode
= 0, hdr_len
= 0;
190 u16 flags
= 0, vlan_tci
= 0;
191 int copied
, offset
, copy_len
, size
;
192 struct cmd_desc_type0
*hwdesc
;
193 struct vlan_ethhdr
*vh
;
194 struct qlcnic_host_tx_ring
*tx_ring
= adapter
->tx_ring
;
195 u16 protocol
= ntohs(skb
->protocol
);
196 u32 producer
= tx_ring
->producer
;
198 if (protocol
== ETH_P_8021Q
) {
199 vh
= (struct vlan_ethhdr
*)skb
->data
;
200 flags
= FLAGS_VLAN_TAGGED
;
201 vlan_tci
= ntohs(vh
->h_vlan_TCI
);
202 protocol
= ntohs(vh
->h_vlan_encapsulated_proto
);
203 } else if (vlan_tx_tag_present(skb
)) {
204 flags
= FLAGS_VLAN_OOB
;
205 vlan_tci
= vlan_tx_tag_get(skb
);
207 if (unlikely(adapter
->pvid
)) {
208 if (vlan_tci
&& !(adapter
->flags
& QLCNIC_TAGGING_ENABLED
))
210 if (vlan_tci
&& (adapter
->flags
& QLCNIC_TAGGING_ENABLED
))
213 flags
= FLAGS_VLAN_OOB
;
214 vlan_tci
= adapter
->pvid
;
217 qlcnic_set_tx_vlan_tci(first_desc
, vlan_tci
);
218 qlcnic_set_tx_flags_opcode(first_desc
, flags
, opcode
);
220 if (*(skb
->data
) & BIT_0
) {
222 memcpy(&first_desc
->eth_addr
, skb
->data
, ETH_ALEN
);
224 opcode
= TX_ETHER_PKT
;
225 if ((adapter
->netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
226 skb_shinfo(skb
)->gso_size
> 0) {
227 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
228 first_desc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
229 first_desc
->total_hdr_length
= hdr_len
;
230 opcode
= (protocol
== ETH_P_IPV6
) ? TX_TCP_LSO6
: TX_TCP_LSO
;
232 /* For LSO, we need to copy the MAC/IP/TCP headers into
233 * the descriptor ring */
237 if (flags
& FLAGS_VLAN_OOB
) {
238 first_desc
->total_hdr_length
+= VLAN_HLEN
;
239 first_desc
->tcp_hdr_offset
= VLAN_HLEN
;
240 first_desc
->ip_hdr_offset
= VLAN_HLEN
;
242 /* Only in case of TSO on vlan device */
243 flags
|= FLAGS_VLAN_TAGGED
;
245 /* Create a TSO vlan header template for firmware */
246 hwdesc
= &tx_ring
->desc_head
[producer
];
247 tx_ring
->cmd_buf_arr
[producer
].skb
= NULL
;
249 copy_len
= min((int)sizeof(struct cmd_desc_type0
) -
250 offset
, hdr_len
+ VLAN_HLEN
);
252 vh
= (struct vlan_ethhdr
*)((char *) hwdesc
+ 2);
253 skb_copy_from_linear_data(skb
, vh
, 12);
254 vh
->h_vlan_proto
= htons(ETH_P_8021Q
);
255 vh
->h_vlan_TCI
= htons(vlan_tci
);
257 skb_copy_from_linear_data_offset(skb
, 12,
260 copied
= copy_len
- VLAN_HLEN
;
262 producer
= get_next_index(producer
, tx_ring
->num_desc
);
265 while (copied
< hdr_len
) {
266 size
= (int)sizeof(struct cmd_desc_type0
) - offset
;
267 copy_len
= min(size
, (hdr_len
- copied
));
268 hwdesc
= &tx_ring
->desc_head
[producer
];
269 tx_ring
->cmd_buf_arr
[producer
].skb
= NULL
;
270 skb_copy_from_linear_data_offset(skb
, copied
,
275 producer
= get_next_index(producer
, tx_ring
->num_desc
);
278 tx_ring
->producer
= producer
;
280 adapter
->stats
.lso_frames
++;
282 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
283 if (protocol
== ETH_P_IP
) {
284 l4proto
= ip_hdr(skb
)->protocol
;
286 if (l4proto
== IPPROTO_TCP
)
288 else if (l4proto
== IPPROTO_UDP
)
290 } else if (protocol
== ETH_P_IPV6
) {
291 l4proto
= ipv6_hdr(skb
)->nexthdr
;
293 if (l4proto
== IPPROTO_TCP
)
294 opcode
= TX_TCPV6_PKT
;
295 else if (l4proto
== IPPROTO_UDP
)
296 opcode
= TX_UDPV6_PKT
;
299 first_desc
->tcp_hdr_offset
+= skb_transport_offset(skb
);
300 first_desc
->ip_hdr_offset
+= skb_network_offset(skb
);
301 qlcnic_set_tx_flags_opcode(first_desc
, flags
, opcode
);
306 static int qlcnic_map_tx_skb(struct pci_dev
*pdev
, struct sk_buff
*skb
,
307 struct qlcnic_cmd_buffer
*pbuf
)
309 struct qlcnic_skb_frag
*nf
;
310 struct skb_frag_struct
*frag
;
314 nr_frags
= skb_shinfo(skb
)->nr_frags
;
315 nf
= &pbuf
->frag_array
[0];
317 map
= pci_map_single(pdev
, skb
->data
, skb_headlen(skb
),
319 if (pci_dma_mapping_error(pdev
, map
))
323 nf
->length
= skb_headlen(skb
);
325 for (i
= 0; i
< nr_frags
; i
++) {
326 frag
= &skb_shinfo(skb
)->frags
[i
];
327 nf
= &pbuf
->frag_array
[i
+1];
328 map
= skb_frag_dma_map(&pdev
->dev
, frag
, 0, skb_frag_size(frag
),
330 if (dma_mapping_error(&pdev
->dev
, map
))
334 nf
->length
= skb_frag_size(frag
);
341 nf
= &pbuf
->frag_array
[i
+1];
342 pci_unmap_page(pdev
, nf
->dma
, nf
->length
, PCI_DMA_TODEVICE
);
345 nf
= &pbuf
->frag_array
[0];
346 pci_unmap_single(pdev
, nf
->dma
, skb_headlen(skb
), PCI_DMA_TODEVICE
);
352 static void qlcnic_unmap_buffers(struct pci_dev
*pdev
, struct sk_buff
*skb
,
353 struct qlcnic_cmd_buffer
*pbuf
)
355 struct qlcnic_skb_frag
*nf
= &pbuf
->frag_array
[0];
356 int i
, nr_frags
= skb_shinfo(skb
)->nr_frags
;
358 for (i
= 0; i
< nr_frags
; i
++) {
359 nf
= &pbuf
->frag_array
[i
+1];
360 pci_unmap_page(pdev
, nf
->dma
, nf
->length
, PCI_DMA_TODEVICE
);
363 nf
= &pbuf
->frag_array
[0];
364 pci_unmap_single(pdev
, nf
->dma
, skb_headlen(skb
), PCI_DMA_TODEVICE
);
368 static inline void qlcnic_clear_cmddesc(u64
*desc
)
375 netdev_tx_t
qlcnic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
377 struct qlcnic_adapter
*adapter
= netdev_priv(netdev
);
378 struct qlcnic_host_tx_ring
*tx_ring
= adapter
->tx_ring
;
379 struct qlcnic_cmd_buffer
*pbuf
;
380 struct qlcnic_skb_frag
*buffrag
;
381 struct cmd_desc_type0
*hwdesc
, *first_desc
;
382 struct pci_dev
*pdev
;
384 int i
, k
, frag_count
, delta
= 0;
385 u32 producer
, num_txd
;
387 num_txd
= tx_ring
->num_desc
;
389 if (!test_bit(__QLCNIC_DEV_UP
, &adapter
->state
)) {
390 netif_stop_queue(netdev
);
391 return NETDEV_TX_BUSY
;
394 if (adapter
->flags
& QLCNIC_MACSPOOF
) {
395 phdr
= (struct ethhdr
*)skb
->data
;
396 if (!ether_addr_equal(phdr
->h_source
, adapter
->mac_addr
))
400 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
401 /* 14 frags supported for normal packet and
402 * 32 frags supported for TSO packet
404 if (!skb_is_gso(skb
) && frag_count
> QLCNIC_MAX_FRAGS_PER_TX
) {
405 for (i
= 0; i
< (frag_count
- QLCNIC_MAX_FRAGS_PER_TX
); i
++)
406 delta
+= skb_frag_size(&skb_shinfo(skb
)->frags
[i
]);
408 if (!__pskb_pull_tail(skb
, delta
))
411 frag_count
= 1 + skb_shinfo(skb
)->nr_frags
;
414 if (unlikely(qlcnic_tx_avail(tx_ring
) <= TX_STOP_THRESH
)) {
415 netif_stop_queue(netdev
);
416 if (qlcnic_tx_avail(tx_ring
) > TX_STOP_THRESH
) {
417 netif_start_queue(netdev
);
419 adapter
->stats
.xmit_off
++;
420 return NETDEV_TX_BUSY
;
424 producer
= tx_ring
->producer
;
425 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
426 pdev
= adapter
->pdev
;
427 first_desc
= &tx_ring
->desc_head
[producer
];
428 hwdesc
= &tx_ring
->desc_head
[producer
];
429 qlcnic_clear_cmddesc((u64
*)hwdesc
);
431 if (qlcnic_map_tx_skb(pdev
, skb
, pbuf
)) {
432 adapter
->stats
.tx_dma_map_error
++;
437 pbuf
->frag_count
= frag_count
;
439 qlcnic_set_tx_frags_len(first_desc
, frag_count
, skb
->len
);
440 qlcnic_set_tx_port(first_desc
, adapter
->portnum
);
442 for (i
= 0; i
< frag_count
; i
++) {
445 if ((k
== 0) && (i
> 0)) {
446 /* move to next desc.*/
447 producer
= get_next_index(producer
, num_txd
);
448 hwdesc
= &tx_ring
->desc_head
[producer
];
449 qlcnic_clear_cmddesc((u64
*)hwdesc
);
450 tx_ring
->cmd_buf_arr
[producer
].skb
= NULL
;
453 buffrag
= &pbuf
->frag_array
[i
];
454 hwdesc
->buffer_length
[k
] = cpu_to_le16(buffrag
->length
);
457 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
460 hwdesc
->addr_buffer2
= cpu_to_le64(buffrag
->dma
);
463 hwdesc
->addr_buffer3
= cpu_to_le64(buffrag
->dma
);
466 hwdesc
->addr_buffer4
= cpu_to_le64(buffrag
->dma
);
471 tx_ring
->producer
= get_next_index(producer
, num_txd
);
474 if (unlikely(qlcnic_tx_pkt(adapter
, first_desc
, skb
)))
477 if (adapter
->mac_learn
)
478 qlcnic_send_filter(adapter
, tx_ring
, first_desc
, skb
);
480 adapter
->stats
.txbytes
+= skb
->len
;
481 adapter
->stats
.xmitcalled
++;
483 qlcnic_update_cmd_producer(tx_ring
);
488 qlcnic_unmap_buffers(pdev
, skb
, pbuf
);
490 adapter
->stats
.txdropped
++;
491 dev_kfree_skb_any(skb
);
495 void qlcnic_advert_link_change(struct qlcnic_adapter
*adapter
, int linkup
)
497 struct net_device
*netdev
= adapter
->netdev
;
499 if (adapter
->ahw
->linkup
&& !linkup
) {
500 netdev_info(netdev
, "NIC Link is down\n");
501 adapter
->ahw
->linkup
= 0;
502 if (netif_running(netdev
)) {
503 netif_carrier_off(netdev
);
504 netif_stop_queue(netdev
);
506 } else if (!adapter
->ahw
->linkup
&& linkup
) {
507 netdev_info(netdev
, "NIC Link is up\n");
508 adapter
->ahw
->linkup
= 1;
509 if (netif_running(netdev
)) {
510 netif_carrier_on(netdev
);
511 netif_wake_queue(netdev
);
516 static int qlcnic_alloc_rx_skb(struct qlcnic_adapter
*adapter
,
517 struct qlcnic_host_rds_ring
*rds_ring
,
518 struct qlcnic_rx_buffer
*buffer
)
522 struct pci_dev
*pdev
= adapter
->pdev
;
524 skb
= netdev_alloc_skb(adapter
->netdev
, rds_ring
->skb_size
);
526 adapter
->stats
.skb_alloc_failure
++;
530 skb_reserve(skb
, NET_IP_ALIGN
);
531 dma
= pci_map_single(pdev
, skb
->data
, rds_ring
->dma_size
,
534 if (pci_dma_mapping_error(pdev
, dma
)) {
535 adapter
->stats
.rx_dma_map_error
++;
536 dev_kfree_skb_any(skb
);
546 static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter
*adapter
,
547 struct qlcnic_host_rds_ring
*rds_ring
)
549 struct rcv_desc
*pdesc
;
550 struct qlcnic_rx_buffer
*buffer
;
553 struct list_head
*head
;
555 if (!spin_trylock(&rds_ring
->lock
))
558 producer
= rds_ring
->producer
;
559 head
= &rds_ring
->free_list
;
561 while (!list_empty(head
)) {
562 buffer
= list_entry(head
->next
, struct qlcnic_rx_buffer
, list
);
565 if (qlcnic_alloc_rx_skb(adapter
, rds_ring
, buffer
))
570 list_del(&buffer
->list
);
572 /* make a rcv descriptor */
573 pdesc
= &rds_ring
->desc_head
[producer
];
574 pdesc
->reference_handle
= cpu_to_le16(buffer
->ref_handle
);
575 pdesc
->buffer_length
= cpu_to_le32(rds_ring
->dma_size
);
576 pdesc
->addr_buffer
= cpu_to_le64(buffer
->dma
);
577 producer
= get_next_index(producer
, rds_ring
->num_desc
);
581 rds_ring
->producer
= producer
;
582 writel((producer
- 1) & (rds_ring
->num_desc
- 1),
583 rds_ring
->crb_rcv_producer
);
586 spin_unlock(&rds_ring
->lock
);
589 static int qlcnic_process_cmd_ring(struct qlcnic_adapter
*adapter
)
591 u32 sw_consumer
, hw_consumer
;
592 int i
, done
, count
= 0;
593 struct qlcnic_cmd_buffer
*buffer
;
594 struct pci_dev
*pdev
= adapter
->pdev
;
595 struct net_device
*netdev
= adapter
->netdev
;
596 struct qlcnic_skb_frag
*frag
;
597 struct qlcnic_host_tx_ring
*tx_ring
= adapter
->tx_ring
;
599 if (!spin_trylock(&adapter
->tx_clean_lock
))
602 sw_consumer
= tx_ring
->sw_consumer
;
603 hw_consumer
= le32_to_cpu(*(tx_ring
->hw_consumer
));
605 while (sw_consumer
!= hw_consumer
) {
606 buffer
= &tx_ring
->cmd_buf_arr
[sw_consumer
];
608 frag
= &buffer
->frag_array
[0];
609 pci_unmap_single(pdev
, frag
->dma
, frag
->length
,
612 for (i
= 1; i
< buffer
->frag_count
; i
++) {
614 pci_unmap_page(pdev
, frag
->dma
, frag
->length
,
619 adapter
->stats
.xmitfinished
++;
620 dev_kfree_skb_any(buffer
->skb
);
624 sw_consumer
= get_next_index(sw_consumer
, tx_ring
->num_desc
);
625 if (++count
>= MAX_STATUS_HANDLE
)
629 if (count
&& netif_running(netdev
)) {
630 tx_ring
->sw_consumer
= sw_consumer
;
634 if (netif_queue_stopped(netdev
) && netif_carrier_ok(netdev
)) {
635 if (qlcnic_tx_avail(tx_ring
) > TX_STOP_THRESH
) {
636 netif_wake_queue(netdev
);
637 adapter
->stats
.xmit_on
++;
640 adapter
->tx_timeo_cnt
= 0;
643 * If everything is freed up to consumer then check if the ring is full
644 * If the ring is full then check if more needs to be freed and
645 * schedule the call back again.
647 * This happens when there are 2 CPUs. One could be freeing and the
648 * other filling it. If the ring is full when we get out of here and
649 * the card has already interrupted the host then the host can miss the
652 * There is still a possible race condition and the host could miss an
653 * interrupt. The card has to take care of this.
655 hw_consumer
= le32_to_cpu(*(tx_ring
->hw_consumer
));
656 done
= (sw_consumer
== hw_consumer
);
658 spin_unlock(&adapter
->tx_clean_lock
);
663 static int qlcnic_poll(struct napi_struct
*napi
, int budget
)
665 struct qlcnic_host_sds_ring
*sds_ring
;
666 struct qlcnic_adapter
*adapter
;
667 int tx_complete
, work_done
;
669 sds_ring
= container_of(napi
, struct qlcnic_host_sds_ring
, napi
);
670 adapter
= sds_ring
->adapter
;
672 tx_complete
= qlcnic_process_cmd_ring(adapter
);
673 work_done
= qlcnic_process_rcv_ring(sds_ring
, budget
);
675 if ((work_done
< budget
) && tx_complete
) {
676 napi_complete(&sds_ring
->napi
);
677 if (test_bit(__QLCNIC_DEV_UP
, &adapter
->state
))
678 qlcnic_enable_int(sds_ring
);
684 static int qlcnic_rx_poll(struct napi_struct
*napi
, int budget
)
686 struct qlcnic_host_sds_ring
*sds_ring
;
687 struct qlcnic_adapter
*adapter
;
690 sds_ring
= container_of(napi
, struct qlcnic_host_sds_ring
, napi
);
691 adapter
= sds_ring
->adapter
;
693 work_done
= qlcnic_process_rcv_ring(sds_ring
, budget
);
695 if (work_done
< budget
) {
696 napi_complete(&sds_ring
->napi
);
697 if (test_bit(__QLCNIC_DEV_UP
, &adapter
->state
))
698 qlcnic_enable_int(sds_ring
);
704 static void qlcnic_handle_linkevent(struct qlcnic_adapter
*adapter
,
705 struct qlcnic_fw_msg
*msg
)
708 u16 cable_len
, link_speed
;
709 u8 link_status
, module
, duplex
, autoneg
, lb_status
= 0;
710 struct net_device
*netdev
= adapter
->netdev
;
712 adapter
->ahw
->has_link_events
= 1;
714 cable_OUI
= msg
->body
[1] & 0xffffffff;
715 cable_len
= (msg
->body
[1] >> 32) & 0xffff;
716 link_speed
= (msg
->body
[1] >> 48) & 0xffff;
718 link_status
= msg
->body
[2] & 0xff;
719 duplex
= (msg
->body
[2] >> 16) & 0xff;
720 autoneg
= (msg
->body
[2] >> 24) & 0xff;
721 lb_status
= (msg
->body
[2] >> 32) & 0x3;
723 module
= (msg
->body
[2] >> 8) & 0xff;
724 if (module
== LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE
)
725 dev_info(&netdev
->dev
,
726 "unsupported cable: OUI 0x%x, length %d\n",
727 cable_OUI
, cable_len
);
728 else if (module
== LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN
)
729 dev_info(&netdev
->dev
, "unsupported cable length %d\n",
732 if (!link_status
&& (lb_status
== QLCNIC_ILB_MODE
||
733 lb_status
== QLCNIC_ELB_MODE
))
734 adapter
->ahw
->loopback_state
|= QLCNIC_LINKEVENT
;
736 qlcnic_advert_link_change(adapter
, link_status
);
738 if (duplex
== LINKEVENT_FULL_DUPLEX
)
739 adapter
->ahw
->link_duplex
= DUPLEX_FULL
;
741 adapter
->ahw
->link_duplex
= DUPLEX_HALF
;
743 adapter
->ahw
->module_type
= module
;
744 adapter
->ahw
->link_autoneg
= autoneg
;
747 adapter
->ahw
->link_speed
= link_speed
;
749 adapter
->ahw
->link_speed
= SPEED_UNKNOWN
;
750 adapter
->ahw
->link_duplex
= DUPLEX_UNKNOWN
;
754 static void qlcnic_handle_fw_message(int desc_cnt
, int index
,
755 struct qlcnic_host_sds_ring
*sds_ring
)
757 struct qlcnic_fw_msg msg
;
758 struct status_desc
*desc
;
759 struct qlcnic_adapter
*adapter
;
761 int i
= 0, opcode
, ret
;
763 while (desc_cnt
> 0 && i
< 8) {
764 desc
= &sds_ring
->desc_head
[index
];
765 msg
.words
[i
++] = le64_to_cpu(desc
->status_desc_data
[0]);
766 msg
.words
[i
++] = le64_to_cpu(desc
->status_desc_data
[1]);
768 index
= get_next_index(index
, sds_ring
->num_desc
);
772 adapter
= sds_ring
->adapter
;
773 dev
= &adapter
->pdev
->dev
;
774 opcode
= qlcnic_get_nic_msg_opcode(msg
.body
[0]);
777 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE
:
778 qlcnic_handle_linkevent(adapter
, &msg
);
780 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK
:
781 ret
= (u32
)(msg
.body
[1]);
784 adapter
->ahw
->loopback_state
|= QLCNIC_LB_RESPONSE
;
787 dev_info(dev
, "loopback already in progress\n");
788 adapter
->ahw
->diag_cnt
= -QLCNIC_TEST_IN_PROGRESS
;
791 dev_info(dev
, "loopback cable is not connected\n");
792 adapter
->ahw
->diag_cnt
= -QLCNIC_LB_CABLE_NOT_CONN
;
796 "loopback configure request failed, err %x\n",
798 adapter
->ahw
->diag_cnt
= -QLCNIC_UNDEFINED_ERROR
;
807 static struct sk_buff
*
808 qlcnic_process_rxbuf(struct qlcnic_adapter
*adapter
,
809 struct qlcnic_host_rds_ring
*rds_ring
, u16 index
,
812 struct qlcnic_rx_buffer
*buffer
;
815 buffer
= &rds_ring
->rx_buf_arr
[index
];
817 if (unlikely(buffer
->skb
== NULL
)) {
822 pci_unmap_single(adapter
->pdev
, buffer
->dma
, rds_ring
->dma_size
,
827 if (likely((adapter
->netdev
->features
& NETIF_F_RXCSUM
) &&
828 (cksum
== STATUS_CKSUM_OK
|| cksum
== STATUS_CKSUM_LOOP
))) {
829 adapter
->stats
.csummed
++;
830 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
832 skb_checksum_none_assert(skb
);
840 static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter
*adapter
,
841 struct sk_buff
*skb
, u16
*vlan_tag
)
843 struct ethhdr
*eth_hdr
;
845 if (!__vlan_get_tag(skb
, vlan_tag
)) {
846 eth_hdr
= (struct ethhdr
*)skb
->data
;
847 memmove(skb
->data
+ VLAN_HLEN
, eth_hdr
, ETH_ALEN
* 2);
848 skb_pull(skb
, VLAN_HLEN
);
853 if (*vlan_tag
== adapter
->pvid
) {
854 /* Outer vlan tag. Packet should follow non-vlan path */
858 if (adapter
->flags
& QLCNIC_TAGGING_ENABLED
)
864 static struct qlcnic_rx_buffer
*
865 qlcnic_process_rcv(struct qlcnic_adapter
*adapter
,
866 struct qlcnic_host_sds_ring
*sds_ring
, int ring
,
869 struct net_device
*netdev
= adapter
->netdev
;
870 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
871 struct qlcnic_rx_buffer
*buffer
;
873 struct qlcnic_host_rds_ring
*rds_ring
;
874 int index
, length
, cksum
, pkt_offset
;
877 if (unlikely(ring
>= adapter
->max_rds_rings
))
880 rds_ring
= &recv_ctx
->rds_rings
[ring
];
882 index
= qlcnic_get_sts_refhandle(sts_data0
);
883 if (unlikely(index
>= rds_ring
->num_desc
))
886 buffer
= &rds_ring
->rx_buf_arr
[index
];
887 length
= qlcnic_get_sts_totallength(sts_data0
);
888 cksum
= qlcnic_get_sts_status(sts_data0
);
889 pkt_offset
= qlcnic_get_sts_pkt_offset(sts_data0
);
891 skb
= qlcnic_process_rxbuf(adapter
, rds_ring
, index
, cksum
);
895 if (length
> rds_ring
->skb_size
)
896 skb_put(skb
, rds_ring
->skb_size
);
898 skb_put(skb
, length
);
901 skb_pull(skb
, pkt_offset
);
903 if (unlikely(qlcnic_check_rx_tagging(adapter
, skb
, &vid
))) {
904 adapter
->stats
.rxdropped
++;
909 skb
->protocol
= eth_type_trans(skb
, netdev
);
912 __vlan_hwaccel_put_tag(skb
, vid
);
914 napi_gro_receive(&sds_ring
->napi
, skb
);
916 adapter
->stats
.rx_pkts
++;
917 adapter
->stats
.rxbytes
+= length
;
922 #define QLC_TCP_HDR_SIZE 20
923 #define QLC_TCP_TS_OPTION_SIZE 12
924 #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
926 static struct qlcnic_rx_buffer
*
927 qlcnic_process_lro(struct qlcnic_adapter
*adapter
,
928 int ring
, u64 sts_data0
, u64 sts_data1
)
930 struct net_device
*netdev
= adapter
->netdev
;
931 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
932 struct qlcnic_rx_buffer
*buffer
;
934 struct qlcnic_host_rds_ring
*rds_ring
;
937 bool push
, timestamp
;
938 int index
, l2_hdr_offset
, l4_hdr_offset
;
939 u16 lro_length
, length
, data_offset
, vid
= 0xffff;
942 if (unlikely(ring
> adapter
->max_rds_rings
))
945 rds_ring
= &recv_ctx
->rds_rings
[ring
];
947 index
= qlcnic_get_lro_sts_refhandle(sts_data0
);
948 if (unlikely(index
> rds_ring
->num_desc
))
951 buffer
= &rds_ring
->rx_buf_arr
[index
];
953 timestamp
= qlcnic_get_lro_sts_timestamp(sts_data0
);
954 lro_length
= qlcnic_get_lro_sts_length(sts_data0
);
955 l2_hdr_offset
= qlcnic_get_lro_sts_l2_hdr_offset(sts_data0
);
956 l4_hdr_offset
= qlcnic_get_lro_sts_l4_hdr_offset(sts_data0
);
957 push
= qlcnic_get_lro_sts_push_flag(sts_data0
);
958 seq_number
= qlcnic_get_lro_sts_seq_number(sts_data1
);
960 skb
= qlcnic_process_rxbuf(adapter
, rds_ring
, index
, STATUS_CKSUM_OK
);
965 data_offset
= l4_hdr_offset
+ QLC_TCP_TS_HDR_SIZE
;
967 data_offset
= l4_hdr_offset
+ QLC_TCP_HDR_SIZE
;
969 skb_put(skb
, lro_length
+ data_offset
);
970 skb_pull(skb
, l2_hdr_offset
);
972 if (unlikely(qlcnic_check_rx_tagging(adapter
, skb
, &vid
))) {
973 adapter
->stats
.rxdropped
++;
978 skb
->protocol
= eth_type_trans(skb
, netdev
);
979 iph
= (struct iphdr
*)skb
->data
;
980 th
= (struct tcphdr
*)(skb
->data
+ (iph
->ihl
<< 2));
981 length
= (iph
->ihl
<< 2) + (th
->doff
<< 2) + lro_length
;
982 iph
->tot_len
= htons(length
);
984 iph
->check
= ip_fast_csum((unsigned char *)iph
, iph
->ihl
);
986 th
->seq
= htonl(seq_number
);
989 if (adapter
->flags
& QLCNIC_FW_LRO_MSS_CAP
)
990 skb_shinfo(skb
)->gso_size
= qlcnic_get_lro_sts_mss(sts_data1
);
993 __vlan_hwaccel_put_tag(skb
, vid
);
994 netif_receive_skb(skb
);
996 adapter
->stats
.lro_pkts
++;
997 adapter
->stats
.lrobytes
+= length
;
1002 int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring
*sds_ring
, int max
)
1004 struct qlcnic_host_rds_ring
*rds_ring
;
1005 struct qlcnic_adapter
*adapter
= sds_ring
->adapter
;
1006 struct list_head
*cur
;
1007 struct status_desc
*desc
;
1008 struct qlcnic_rx_buffer
*rxbuf
;
1009 u64 sts_data0
, sts_data1
;
1010 __le64 owner_phantom
= cpu_to_le64(STATUS_OWNER_PHANTOM
);
1011 int opcode
, ring
, desc_cnt
, count
= 0;
1012 u32 consumer
= sds_ring
->consumer
;
1014 while (count
< max
) {
1015 desc
= &sds_ring
->desc_head
[consumer
];
1016 sts_data0
= le64_to_cpu(desc
->status_desc_data
[0]);
1018 if (!(sts_data0
& STATUS_OWNER_HOST
))
1021 desc_cnt
= qlcnic_get_sts_desc_cnt(sts_data0
);
1022 opcode
= qlcnic_get_sts_opcode(sts_data0
);
1025 case QLCNIC_RXPKT_DESC
:
1026 case QLCNIC_OLD_RXPKT_DESC
:
1027 case QLCNIC_SYN_OFFLOAD
:
1028 ring
= qlcnic_get_sts_type(sts_data0
);
1029 rxbuf
= qlcnic_process_rcv(adapter
, sds_ring
, ring
,
1032 case QLCNIC_LRO_DESC
:
1033 ring
= qlcnic_get_lro_sts_type(sts_data0
);
1034 sts_data1
= le64_to_cpu(desc
->status_desc_data
[1]);
1035 rxbuf
= qlcnic_process_lro(adapter
, ring
, sts_data0
,
1038 case QLCNIC_RESPONSE_DESC
:
1039 qlcnic_handle_fw_message(desc_cnt
, consumer
, sds_ring
);
1044 WARN_ON(desc_cnt
> 1);
1047 list_add_tail(&rxbuf
->list
, &sds_ring
->free_list
[ring
]);
1049 adapter
->stats
.null_rxbuf
++;
1052 for (; desc_cnt
> 0; desc_cnt
--) {
1053 desc
= &sds_ring
->desc_head
[consumer
];
1054 desc
->status_desc_data
[0] = owner_phantom
;
1055 consumer
= get_next_index(consumer
, sds_ring
->num_desc
);
1060 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++) {
1061 rds_ring
= &adapter
->recv_ctx
->rds_rings
[ring
];
1063 if (!list_empty(&sds_ring
->free_list
[ring
])) {
1064 list_for_each(cur
, &sds_ring
->free_list
[ring
]) {
1065 rxbuf
= list_entry(cur
, struct qlcnic_rx_buffer
,
1067 qlcnic_alloc_rx_skb(adapter
, rds_ring
, rxbuf
);
1069 spin_lock(&rds_ring
->lock
);
1070 list_splice_tail_init(&sds_ring
->free_list
[ring
],
1071 &rds_ring
->free_list
);
1072 spin_unlock(&rds_ring
->lock
);
1075 qlcnic_post_rx_buffers_nodb(adapter
, rds_ring
);
1079 sds_ring
->consumer
= consumer
;
1080 writel(consumer
, sds_ring
->crb_sts_consumer
);
1086 void qlcnic_post_rx_buffers(struct qlcnic_adapter
*adapter
,
1087 struct qlcnic_host_rds_ring
*rds_ring
)
1089 struct rcv_desc
*pdesc
;
1090 struct qlcnic_rx_buffer
*buffer
;
1093 struct list_head
*head
;
1095 producer
= rds_ring
->producer
;
1096 head
= &rds_ring
->free_list
;
1098 while (!list_empty(head
)) {
1100 buffer
= list_entry(head
->next
, struct qlcnic_rx_buffer
, list
);
1103 if (qlcnic_alloc_rx_skb(adapter
, rds_ring
, buffer
))
1108 list_del(&buffer
->list
);
1110 /* make a rcv descriptor */
1111 pdesc
= &rds_ring
->desc_head
[producer
];
1112 pdesc
->addr_buffer
= cpu_to_le64(buffer
->dma
);
1113 pdesc
->reference_handle
= cpu_to_le16(buffer
->ref_handle
);
1114 pdesc
->buffer_length
= cpu_to_le32(rds_ring
->dma_size
);
1115 producer
= get_next_index(producer
, rds_ring
->num_desc
);
1119 rds_ring
->producer
= producer
;
1120 writel((producer
-1) & (rds_ring
->num_desc
-1),
1121 rds_ring
->crb_rcv_producer
);
1125 static void dump_skb(struct sk_buff
*skb
, struct qlcnic_adapter
*adapter
)
1128 unsigned char *data
= skb
->data
;
1130 pr_info(KERN_INFO
"\n");
1131 for (i
= 0; i
< skb
->len
; i
++) {
1132 QLCDB(adapter
, DRV
, "%02x ", data
[i
]);
1133 if ((i
& 0x0f) == 8)
1134 pr_info(KERN_INFO
"\n");
1138 static void qlcnic_process_rcv_diag(struct qlcnic_adapter
*adapter
, int ring
,
1141 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
1142 struct sk_buff
*skb
;
1143 struct qlcnic_host_rds_ring
*rds_ring
;
1144 int index
, length
, cksum
, pkt_offset
;
1146 if (unlikely(ring
>= adapter
->max_rds_rings
))
1149 rds_ring
= &recv_ctx
->rds_rings
[ring
];
1151 index
= qlcnic_get_sts_refhandle(sts_data0
);
1152 length
= qlcnic_get_sts_totallength(sts_data0
);
1153 if (unlikely(index
>= rds_ring
->num_desc
))
1156 cksum
= qlcnic_get_sts_status(sts_data0
);
1157 pkt_offset
= qlcnic_get_sts_pkt_offset(sts_data0
);
1159 skb
= qlcnic_process_rxbuf(adapter
, rds_ring
, index
, cksum
);
1163 if (length
> rds_ring
->skb_size
)
1164 skb_put(skb
, rds_ring
->skb_size
);
1166 skb_put(skb
, length
);
1169 skb_pull(skb
, pkt_offset
);
1171 if (!qlcnic_check_loopback_buff(skb
->data
, adapter
->mac_addr
))
1172 adapter
->ahw
->diag_cnt
++;
1174 dump_skb(skb
, adapter
);
1176 dev_kfree_skb_any(skb
);
1177 adapter
->stats
.rx_pkts
++;
1178 adapter
->stats
.rxbytes
+= length
;
1183 void qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring
*sds_ring
)
1185 struct qlcnic_adapter
*adapter
= sds_ring
->adapter
;
1186 struct status_desc
*desc
;
1188 int ring
, opcode
, desc_cnt
;
1190 u32 consumer
= sds_ring
->consumer
;
1192 desc
= &sds_ring
->desc_head
[consumer
];
1193 sts_data0
= le64_to_cpu(desc
->status_desc_data
[0]);
1195 if (!(sts_data0
& STATUS_OWNER_HOST
))
1198 desc_cnt
= qlcnic_get_sts_desc_cnt(sts_data0
);
1199 opcode
= qlcnic_get_sts_opcode(sts_data0
);
1201 case QLCNIC_RESPONSE_DESC
:
1202 qlcnic_handle_fw_message(desc_cnt
, consumer
, sds_ring
);
1205 ring
= qlcnic_get_sts_type(sts_data0
);
1206 qlcnic_process_rcv_diag(adapter
, ring
, sts_data0
);
1210 for (; desc_cnt
> 0; desc_cnt
--) {
1211 desc
= &sds_ring
->desc_head
[consumer
];
1212 desc
->status_desc_data
[0] = cpu_to_le64(STATUS_OWNER_PHANTOM
);
1213 consumer
= get_next_index(consumer
, sds_ring
->num_desc
);
1216 sds_ring
->consumer
= consumer
;
1217 writel(consumer
, sds_ring
->crb_sts_consumer
);
1220 void qlcnic_fetch_mac(u32 off1
, u32 off2
, u8 alt_mac
, u8
*mac
)
1222 u32 mac_low
, mac_high
;
1229 mac_low
|= (mac_low
>> 16) | (mac_high
<< 16);
1233 for (i
= 0; i
< 2; i
++)
1234 mac
[i
] = (u8
)(mac_high
>> ((1 - i
) * 8));
1235 for (i
= 2; i
< 6; i
++)
1236 mac
[i
] = (u8
)(mac_low
>> ((5 - i
) * 8));
1239 int qlcnic_napi_add(struct qlcnic_adapter
*adapter
, struct net_device
*netdev
)
1241 int ring
, max_sds_rings
;
1242 struct qlcnic_host_sds_ring
*sds_ring
;
1243 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
1245 if (qlcnic_alloc_sds_rings(recv_ctx
, adapter
->max_sds_rings
))
1248 max_sds_rings
= adapter
->max_sds_rings
;
1250 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
1251 sds_ring
= &recv_ctx
->sds_rings
[ring
];
1253 if (ring
== max_sds_rings
- 1)
1254 netif_napi_add(netdev
, &sds_ring
->napi
, qlcnic_poll
,
1255 QLCNIC_NETDEV_WEIGHT
/ max_sds_rings
);
1257 netif_napi_add(netdev
, &sds_ring
->napi
, qlcnic_rx_poll
,
1258 QLCNIC_NETDEV_WEIGHT
*2);
1264 void qlcnic_napi_del(struct qlcnic_adapter
*adapter
)
1267 struct qlcnic_host_sds_ring
*sds_ring
;
1268 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
1270 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
1271 sds_ring
= &recv_ctx
->sds_rings
[ring
];
1272 netif_napi_del(&sds_ring
->napi
);
1275 qlcnic_free_sds_rings(adapter
->recv_ctx
);
1278 void qlcnic_napi_enable(struct qlcnic_adapter
*adapter
)
1281 struct qlcnic_host_sds_ring
*sds_ring
;
1282 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
1284 if (adapter
->is_up
!= QLCNIC_ADAPTER_UP_MAGIC
)
1287 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
1288 sds_ring
= &recv_ctx
->sds_rings
[ring
];
1289 napi_enable(&sds_ring
->napi
);
1290 qlcnic_enable_int(sds_ring
);
1294 void qlcnic_napi_disable(struct qlcnic_adapter
*adapter
)
1297 struct qlcnic_host_sds_ring
*sds_ring
;
1298 struct qlcnic_recv_context
*recv_ctx
= adapter
->recv_ctx
;
1300 if (adapter
->is_up
!= QLCNIC_ADAPTER_UP_MAGIC
)
1303 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
1304 sds_ring
= &recv_ctx
->sds_rings
[ring
];
1305 qlcnic_disable_int(sds_ring
);
1306 napi_synchronize(&sds_ring
->napi
);
1307 napi_disable(&sds_ring
->napi
);