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path: root/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
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Diffstat (limited to 'drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c')
-rw-r--r--drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c1346
1 files changed, 1346 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
new file mode 100644
index 000000000000..25e6ffc8b9ac
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -0,0 +1,1346 @@
1#include <linux/netdevice.h>
2#include <linux/if_vlan.h>
3#include <net/ip.h>
4#include <linux/ipv6.h>
5
6#include "qlcnic.h"
7
8#define QLCNIC_MAC_HASH(MAC)\
9 ((((MAC) & 0x70000) >> 0x10) | (((MAC) & 0x70000000000ULL) >> 0x25))
10
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
21
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))
28
29#define qlcnic_set_tx_port(_desc, _port) \
30 ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
31
32#define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
33 ((_desc)->flags_opcode |= \
34 cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
35
36#define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
37 ((_desc)->nfrags__length = \
38 cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
39
40/* owner bits of status_desc */
41#define STATUS_OWNER_HOST (0x1ULL << 56)
42#define STATUS_OWNER_PHANTOM (0x2ULL << 56)
43
44/* Status descriptor:
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
48 */
49#define qlcnic_get_sts_port(sts_data) \
50 ((sts_data) & 0x0F)
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)
67
68#define qlcnic_get_lro_sts_refhandle(sts_data) \
69 ((sts_data) & 0x0FFFF)
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)
86
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
93
94/* for status field in status_desc */
95#define STATUS_CKSUM_LOOP 0
96#define STATUS_CKSUM_OK 2
97static void qlcnic_change_filter(struct qlcnic_adapter *adapter,
98 u64 uaddr, __le16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
99{
100 struct cmd_desc_type0 *hwdesc;
101 struct qlcnic_nic_req *req;
102 struct qlcnic_mac_req *mac_req;
103 struct qlcnic_vlan_req *vlan_req;
104 u32 producer;
105 u64 word;
106
107 producer = tx_ring->producer;
108 hwdesc = &tx_ring->desc_head[tx_ring->producer];
109
110 req = (struct qlcnic_nic_req *)hwdesc;
111 memset(req, 0, sizeof(struct qlcnic_nic_req));
112 req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
113
114 word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
115 req->req_hdr = cpu_to_le64(word);
116
117 mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
118 mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
119 memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN);
120
121 vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
122 vlan_req->vlan_id = vlan_id;
123
124 tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
125 smp_mb();
126}
127
128static void
129qlcnic_send_filter(struct qlcnic_adapter *adapter,
130 struct qlcnic_host_tx_ring *tx_ring,
131 struct cmd_desc_type0 *first_desc,
132 struct sk_buff *skb)
133{
134 struct ethhdr *phdr = (struct ethhdr *)(skb->data);
135 struct qlcnic_filter *fil, *tmp_fil;
136 struct hlist_node *tmp_hnode, *n;
137 struct hlist_head *head;
138 u64 src_addr = 0;
139 __le16 vlan_id = 0;
140 u8 hindex;
141
142 if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
143 return;
144
145 if (adapter->fhash.fnum >= adapter->fhash.fmax)
146 return;
147
148 /* Only NPAR capable devices support vlan based learning*/
149 if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
150 vlan_id = first_desc->vlan_TCI;
151 memcpy(&src_addr, phdr->h_source, ETH_ALEN);
152 hindex = QLCNIC_MAC_HASH(src_addr) & (QLCNIC_LB_MAX_FILTERS - 1);
153 head = &(adapter->fhash.fhead[hindex]);
154
155 hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
156 if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
157 tmp_fil->vlan_id == vlan_id) {
158
159 if (jiffies >
160 (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
161 qlcnic_change_filter(adapter, src_addr, vlan_id,
162 tx_ring);
163 tmp_fil->ftime = jiffies;
164 return;
165 }
166 }
167
168 fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
169 if (!fil)
170 return;
171
172 qlcnic_change_filter(adapter, src_addr, vlan_id, tx_ring);
173
174 fil->ftime = jiffies;
175 fil->vlan_id = vlan_id;
176 memcpy(fil->faddr, &src_addr, ETH_ALEN);
177 spin_lock(&adapter->mac_learn_lock);
178 hlist_add_head(&(fil->fnode), head);
179 adapter->fhash.fnum++;
180 spin_unlock(&adapter->mac_learn_lock);
181}
182
183static int
184qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
185 struct cmd_desc_type0 *first_desc,
186 struct sk_buff *skb)
187{
188 u8 opcode = 0, hdr_len = 0;
189 u16 flags = 0, vlan_tci = 0;
190 int copied, offset, copy_len;
191 struct cmd_desc_type0 *hwdesc;
192 struct vlan_ethhdr *vh;
193 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
194 u16 protocol = ntohs(skb->protocol);
195 u32 producer = tx_ring->producer;
196
197 if (protocol == ETH_P_8021Q) {
198 vh = (struct vlan_ethhdr *)skb->data;
199 flags = FLAGS_VLAN_TAGGED;
200 vlan_tci = ntohs(vh->h_vlan_TCI);
201 protocol = ntohs(vh->h_vlan_encapsulated_proto);
202 } else if (vlan_tx_tag_present(skb)) {
203 flags = FLAGS_VLAN_OOB;
204 vlan_tci = vlan_tx_tag_get(skb);
205 }
206 if (unlikely(adapter->pvid)) {
207 if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
208 return -EIO;
209 if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
210 goto set_flags;
211
212 flags = FLAGS_VLAN_OOB;
213 vlan_tci = adapter->pvid;
214 }
215set_flags:
216 qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
217 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
218
219 if (*(skb->data) & BIT_0) {
220 flags |= BIT_0;
221 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
222 }
223 opcode = TX_ETHER_PKT;
224 if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
225 skb_shinfo(skb)->gso_size > 0) {
226
227 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
228
229 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
230 first_desc->total_hdr_length = hdr_len;
231
232 opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO;
233
234 /* For LSO, we need to copy the MAC/IP/TCP headers into
235 * the descriptor ring */
236 copied = 0;
237 offset = 2;
238
239 if (flags & FLAGS_VLAN_OOB) {
240 first_desc->total_hdr_length += VLAN_HLEN;
241 first_desc->tcp_hdr_offset = VLAN_HLEN;
242 first_desc->ip_hdr_offset = VLAN_HLEN;
243 /* Only in case of TSO on vlan device */
244 flags |= FLAGS_VLAN_TAGGED;
245
246 /* Create a TSO vlan header template for firmware */
247
248 hwdesc = &tx_ring->desc_head[producer];
249 tx_ring->cmd_buf_arr[producer].skb = NULL;
250
251 copy_len = min((int)sizeof(struct cmd_desc_type0) -
252 offset, hdr_len + VLAN_HLEN);
253
254 vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
255 skb_copy_from_linear_data(skb, vh, 12);
256 vh->h_vlan_proto = htons(ETH_P_8021Q);
257 vh->h_vlan_TCI = htons(vlan_tci);
258
259 skb_copy_from_linear_data_offset(skb, 12,
260 (char *)vh + 16, copy_len - 16);
261
262 copied = copy_len - VLAN_HLEN;
263 offset = 0;
264
265 producer = get_next_index(producer, tx_ring->num_desc);
266 }
267
268 while (copied < hdr_len) {
269
270 copy_len = min((int)sizeof(struct cmd_desc_type0) -
271 offset, (hdr_len - copied));
272
273 hwdesc = &tx_ring->desc_head[producer];
274 tx_ring->cmd_buf_arr[producer].skb = NULL;
275
276 skb_copy_from_linear_data_offset(skb, copied,
277 (char *) hwdesc + offset, copy_len);
278
279 copied += copy_len;
280 offset = 0;
281
282 producer = get_next_index(producer, tx_ring->num_desc);
283 }
284
285 tx_ring->producer = producer;
286 smp_mb();
287 adapter->stats.lso_frames++;
288
289 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
290 u8 l4proto;
291
292 if (protocol == ETH_P_IP) {
293 l4proto = ip_hdr(skb)->protocol;
294
295 if (l4proto == IPPROTO_TCP)
296 opcode = TX_TCP_PKT;
297 else if (l4proto == IPPROTO_UDP)
298 opcode = TX_UDP_PKT;
299 } else if (protocol == ETH_P_IPV6) {
300 l4proto = ipv6_hdr(skb)->nexthdr;
301
302 if (l4proto == IPPROTO_TCP)
303 opcode = TX_TCPV6_PKT;
304 else if (l4proto == IPPROTO_UDP)
305 opcode = TX_UDPV6_PKT;
306 }
307 }
308 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
309 first_desc->ip_hdr_offset += skb_network_offset(skb);
310 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
311
312 return 0;
313}
314
315static int
316qlcnic_map_tx_skb(struct pci_dev *pdev,
317 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
318{
319 struct qlcnic_skb_frag *nf;
320 struct skb_frag_struct *frag;
321 int i, nr_frags;
322 dma_addr_t map;
323
324 nr_frags = skb_shinfo(skb)->nr_frags;
325 nf = &pbuf->frag_array[0];
326
327 map = pci_map_single(pdev, skb->data,
328 skb_headlen(skb), PCI_DMA_TODEVICE);
329 if (pci_dma_mapping_error(pdev, map))
330 goto out_err;
331
332 nf->dma = map;
333 nf->length = skb_headlen(skb);
334
335 for (i = 0; i < nr_frags; i++) {
336 frag = &skb_shinfo(skb)->frags[i];
337 nf = &pbuf->frag_array[i+1];
338
339 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
340 DMA_TO_DEVICE);
341 if (dma_mapping_error(&pdev->dev, map))
342 goto unwind;
343
344 nf->dma = map;
345 nf->length = skb_frag_size(frag);
346 }
347
348 return 0;
349
350unwind:
351 while (--i >= 0) {
352 nf = &pbuf->frag_array[i+1];
353 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
354 }
355
356 nf = &pbuf->frag_array[0];
357 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
358
359out_err:
360 return -ENOMEM;
361}
362
363static void
364qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
365 struct qlcnic_cmd_buffer *pbuf)
366{
367 struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
368 int nr_frags = skb_shinfo(skb)->nr_frags;
369 int i;
370
371 for (i = 0; i < nr_frags; i++) {
372 nf = &pbuf->frag_array[i+1];
373 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
374 }
375
376 nf = &pbuf->frag_array[0];
377 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
378 pbuf->skb = NULL;
379}
380
381static inline void
382qlcnic_clear_cmddesc(u64 *desc)
383{
384 desc[0] = 0ULL;
385 desc[2] = 0ULL;
386 desc[7] = 0ULL;
387}
388
389netdev_tx_t
390qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
391{
392 struct qlcnic_adapter *adapter = netdev_priv(netdev);
393 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
394 struct qlcnic_cmd_buffer *pbuf;
395 struct qlcnic_skb_frag *buffrag;
396 struct cmd_desc_type0 *hwdesc, *first_desc;
397 struct pci_dev *pdev;
398 struct ethhdr *phdr;
399 int delta = 0;
400 int i, k;
401
402 u32 producer;
403 int frag_count;
404 u32 num_txd = tx_ring->num_desc;
405
406 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
407 netif_stop_queue(netdev);
408 return NETDEV_TX_BUSY;
409 }
410
411 if (adapter->flags & QLCNIC_MACSPOOF) {
412 phdr = (struct ethhdr *)skb->data;
413 if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
414 goto drop_packet;
415 }
416
417 frag_count = skb_shinfo(skb)->nr_frags + 1;
418 /* 14 frags supported for normal packet and
419 * 32 frags supported for TSO packet
420 */
421 if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
422
423 for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
424 delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
425
426 if (!__pskb_pull_tail(skb, delta))
427 goto drop_packet;
428
429 frag_count = 1 + skb_shinfo(skb)->nr_frags;
430 }
431
432 if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
433 netif_stop_queue(netdev);
434 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
435 netif_start_queue(netdev);
436 else {
437 adapter->stats.xmit_off++;
438 return NETDEV_TX_BUSY;
439 }
440 }
441
442 producer = tx_ring->producer;
443 pbuf = &tx_ring->cmd_buf_arr[producer];
444
445 pdev = adapter->pdev;
446
447 first_desc = hwdesc = &tx_ring->desc_head[producer];
448 qlcnic_clear_cmddesc((u64 *)hwdesc);
449
450 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
451 adapter->stats.tx_dma_map_error++;
452 goto drop_packet;
453 }
454
455 pbuf->skb = skb;
456 pbuf->frag_count = frag_count;
457
458 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
459 qlcnic_set_tx_port(first_desc, adapter->portnum);
460
461 for (i = 0; i < frag_count; i++) {
462
463 k = i % 4;
464
465 if ((k == 0) && (i > 0)) {
466 /* move to next desc.*/
467 producer = get_next_index(producer, num_txd);
468 hwdesc = &tx_ring->desc_head[producer];
469 qlcnic_clear_cmddesc((u64 *)hwdesc);
470 tx_ring->cmd_buf_arr[producer].skb = NULL;
471 }
472
473 buffrag = &pbuf->frag_array[i];
474
475 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
476 switch (k) {
477 case 0:
478 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
479 break;
480 case 1:
481 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
482 break;
483 case 2:
484 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
485 break;
486 case 3:
487 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
488 break;
489 }
490 }
491
492 tx_ring->producer = get_next_index(producer, num_txd);
493 smp_mb();
494
495 if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb)))
496 goto unwind_buff;
497
498 if (adapter->mac_learn)
499 qlcnic_send_filter(adapter, tx_ring, first_desc, skb);
500
501 adapter->stats.txbytes += skb->len;
502 adapter->stats.xmitcalled++;
503
504 qlcnic_update_cmd_producer(tx_ring);
505
506 return NETDEV_TX_OK;
507
508unwind_buff:
509 qlcnic_unmap_buffers(pdev, skb, pbuf);
510drop_packet:
511 adapter->stats.txdropped++;
512 dev_kfree_skb_any(skb);
513 return NETDEV_TX_OK;
514}
515
516void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
517{
518 struct net_device *netdev = adapter->netdev;
519
520 if (adapter->ahw->linkup && !linkup) {
521 netdev_info(netdev, "NIC Link is down\n");
522 adapter->ahw->linkup = 0;
523 if (netif_running(netdev)) {
524 netif_carrier_off(netdev);
525 netif_stop_queue(netdev);
526 }
527 } else if (!adapter->ahw->linkup && linkup) {
528 netdev_info(netdev, "NIC Link is up\n");
529 adapter->ahw->linkup = 1;
530 if (netif_running(netdev)) {
531 netif_carrier_on(netdev);
532 netif_wake_queue(netdev);
533 }
534 }
535}
536
537static int
538qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
539 struct qlcnic_host_rds_ring *rds_ring,
540 struct qlcnic_rx_buffer *buffer)
541{
542 struct sk_buff *skb;
543 dma_addr_t dma;
544 struct pci_dev *pdev = adapter->pdev;
545
546 skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
547 if (!skb) {
548 adapter->stats.skb_alloc_failure++;
549 return -ENOMEM;
550 }
551
552 skb_reserve(skb, NET_IP_ALIGN);
553
554 dma = pci_map_single(pdev, skb->data,
555 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
556
557 if (pci_dma_mapping_error(pdev, dma)) {
558 adapter->stats.rx_dma_map_error++;
559 dev_kfree_skb_any(skb);
560 return -ENOMEM;
561 }
562
563 buffer->skb = skb;
564 buffer->dma = dma;
565
566 return 0;
567}
568
569static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
570 struct qlcnic_host_rds_ring *rds_ring)
571{
572 struct rcv_desc *pdesc;
573 struct qlcnic_rx_buffer *buffer;
574 int count = 0;
575 uint32_t producer;
576 struct list_head *head;
577
578 if (!spin_trylock(&rds_ring->lock))
579 return;
580
581 producer = rds_ring->producer;
582
583 head = &rds_ring->free_list;
584 while (!list_empty(head)) {
585
586 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
587
588 if (!buffer->skb) {
589 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
590 break;
591 }
592
593 count++;
594 list_del(&buffer->list);
595
596 /* make a rcv descriptor */
597 pdesc = &rds_ring->desc_head[producer];
598 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
599 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
600 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
601
602 producer = get_next_index(producer, rds_ring->num_desc);
603 }
604
605 if (count) {
606 rds_ring->producer = producer;
607 writel((producer - 1) & (rds_ring->num_desc - 1),
608 rds_ring->crb_rcv_producer);
609 }
610 spin_unlock(&rds_ring->lock);
611}
612
613static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
614{
615 u32 sw_consumer, hw_consumer;
616 int count = 0, i;
617 struct qlcnic_cmd_buffer *buffer;
618 struct pci_dev *pdev = adapter->pdev;
619 struct net_device *netdev = adapter->netdev;
620 struct qlcnic_skb_frag *frag;
621 int done;
622 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
623
624 if (!spin_trylock(&adapter->tx_clean_lock))
625 return 1;
626
627 sw_consumer = tx_ring->sw_consumer;
628 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
629
630 while (sw_consumer != hw_consumer) {
631 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
632 if (buffer->skb) {
633 frag = &buffer->frag_array[0];
634 pci_unmap_single(pdev, frag->dma, frag->length,
635 PCI_DMA_TODEVICE);
636 frag->dma = 0ULL;
637 for (i = 1; i < buffer->frag_count; i++) {
638 frag++;
639 pci_unmap_page(pdev, frag->dma, frag->length,
640 PCI_DMA_TODEVICE);
641 frag->dma = 0ULL;
642 }
643
644 adapter->stats.xmitfinished++;
645 dev_kfree_skb_any(buffer->skb);
646 buffer->skb = NULL;
647 }
648
649 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
650 if (++count >= MAX_STATUS_HANDLE)
651 break;
652 }
653
654 if (count && netif_running(netdev)) {
655 tx_ring->sw_consumer = sw_consumer;
656
657 smp_mb();
658
659 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
660 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
661 netif_wake_queue(netdev);
662 adapter->stats.xmit_on++;
663 }
664 }
665 adapter->tx_timeo_cnt = 0;
666 }
667 /*
668 * If everything is freed up to consumer then check if the ring is full
669 * If the ring is full then check if more needs to be freed and
670 * schedule the call back again.
671 *
672 * This happens when there are 2 CPUs. One could be freeing and the
673 * other filling it. If the ring is full when we get out of here and
674 * the card has already interrupted the host then the host can miss the
675 * interrupt.
676 *
677 * There is still a possible race condition and the host could miss an
678 * interrupt. The card has to take care of this.
679 */
680 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
681 done = (sw_consumer == hw_consumer);
682 spin_unlock(&adapter->tx_clean_lock);
683
684 return done;
685}
686
687static int qlcnic_poll(struct napi_struct *napi, int budget)
688{
689 struct qlcnic_host_sds_ring *sds_ring =
690 container_of(napi, struct qlcnic_host_sds_ring, napi);
691
692 struct qlcnic_adapter *adapter = sds_ring->adapter;
693
694 int tx_complete;
695 int work_done;
696
697 tx_complete = qlcnic_process_cmd_ring(adapter);
698
699 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
700
701 if ((work_done < budget) && tx_complete) {
702 napi_complete(&sds_ring->napi);
703 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
704 qlcnic_enable_int(sds_ring);
705 }
706
707 return work_done;
708}
709
710static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
711{
712 struct qlcnic_host_sds_ring *sds_ring =
713 container_of(napi, struct qlcnic_host_sds_ring, napi);
714
715 struct qlcnic_adapter *adapter = sds_ring->adapter;
716 int work_done;
717
718 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
719
720 if (work_done < budget) {
721 napi_complete(&sds_ring->napi);
722 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
723 qlcnic_enable_int(sds_ring);
724 }
725
726 return work_done;
727}
728
729static void
730qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
731 struct qlcnic_fw_msg *msg)
732{
733 u32 cable_OUI;
734 u16 cable_len;
735 u16 link_speed;
736 u8 link_status, module, duplex, autoneg;
737 u8 lb_status = 0;
738 struct net_device *netdev = adapter->netdev;
739
740 adapter->has_link_events = 1;
741
742 cable_OUI = msg->body[1] & 0xffffffff;
743 cable_len = (msg->body[1] >> 32) & 0xffff;
744 link_speed = (msg->body[1] >> 48) & 0xffff;
745
746 link_status = msg->body[2] & 0xff;
747 duplex = (msg->body[2] >> 16) & 0xff;
748 autoneg = (msg->body[2] >> 24) & 0xff;
749 lb_status = (msg->body[2] >> 32) & 0x3;
750
751 module = (msg->body[2] >> 8) & 0xff;
752 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
753 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
754 "length %d\n", cable_OUI, cable_len);
755 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
756 dev_info(&netdev->dev, "unsupported cable length %d\n",
757 cable_len);
758
759 if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
760 lb_status == QLCNIC_ELB_MODE))
761 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
762
763 qlcnic_advert_link_change(adapter, link_status);
764
765 if (duplex == LINKEVENT_FULL_DUPLEX)
766 adapter->link_duplex = DUPLEX_FULL;
767 else
768 adapter->link_duplex = DUPLEX_HALF;
769
770 adapter->module_type = module;
771 adapter->link_autoneg = autoneg;
772
773 if (link_status) {
774 adapter->link_speed = link_speed;
775 } else {
776 adapter->link_speed = SPEED_UNKNOWN;
777 adapter->link_duplex = DUPLEX_UNKNOWN;
778 }
779}
780
781static void
782qlcnic_handle_fw_message(int desc_cnt, int index,
783 struct qlcnic_host_sds_ring *sds_ring)
784{
785 struct qlcnic_fw_msg msg;
786 struct status_desc *desc;
787 struct qlcnic_adapter *adapter;
788 struct device *dev;
789 int i = 0, opcode, ret;
790
791 while (desc_cnt > 0 && i < 8) {
792 desc = &sds_ring->desc_head[index];
793 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
794 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
795
796 index = get_next_index(index, sds_ring->num_desc);
797 desc_cnt--;
798 }
799
800 adapter = sds_ring->adapter;
801 dev = &adapter->pdev->dev;
802 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
803
804 switch (opcode) {
805 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
806 qlcnic_handle_linkevent(adapter, &msg);
807 break;
808 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
809 ret = (u32)(msg.body[1]);
810 switch (ret) {
811 case 0:
812 adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
813 break;
814 case 1:
815 dev_info(dev, "loopback already in progress\n");
816 adapter->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
817 break;
818 case 2:
819 dev_info(dev, "loopback cable is not connected\n");
820 adapter->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
821 break;
822 default:
823 dev_info(dev, "loopback configure request failed,"
824 " ret %x\n", ret);
825 adapter->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
826 break;
827 }
828 break;
829 default:
830 break;
831 }
832}
833
834static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
835 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
836{
837 struct qlcnic_rx_buffer *buffer;
838 struct sk_buff *skb;
839
840 buffer = &rds_ring->rx_buf_arr[index];
841
842 if (unlikely(buffer->skb == NULL)) {
843 WARN_ON(1);
844 return NULL;
845 }
846
847 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
848 PCI_DMA_FROMDEVICE);
849
850 skb = buffer->skb;
851
852 if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
853 (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
854 adapter->stats.csummed++;
855 skb->ip_summed = CHECKSUM_UNNECESSARY;
856 } else {
857 skb_checksum_none_assert(skb);
858 }
859
860 buffer->skb = NULL;
861
862 return skb;
863}
864
865static inline int
866qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb,
867 u16 *vlan_tag)
868{
869 struct ethhdr *eth_hdr;
870
871 if (!__vlan_get_tag(skb, vlan_tag)) {
872 eth_hdr = (struct ethhdr *) skb->data;
873 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
874 skb_pull(skb, VLAN_HLEN);
875 }
876 if (!adapter->pvid)
877 return 0;
878
879 if (*vlan_tag == adapter->pvid) {
880 /* Outer vlan tag. Packet should follow non-vlan path */
881 *vlan_tag = 0xffff;
882 return 0;
883 }
884 if (adapter->flags & QLCNIC_TAGGING_ENABLED)
885 return 0;
886
887 return -EINVAL;
888}
889
890static struct qlcnic_rx_buffer *
891qlcnic_process_rcv(struct qlcnic_adapter *adapter,
892 struct qlcnic_host_sds_ring *sds_ring,
893 int ring, u64 sts_data0)
894{
895 struct net_device *netdev = adapter->netdev;
896 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
897 struct qlcnic_rx_buffer *buffer;
898 struct sk_buff *skb;
899 struct qlcnic_host_rds_ring *rds_ring;
900 int index, length, cksum, pkt_offset;
901 u16 vid = 0xffff;
902
903 if (unlikely(ring >= adapter->max_rds_rings))
904 return NULL;
905
906 rds_ring = &recv_ctx->rds_rings[ring];
907
908 index = qlcnic_get_sts_refhandle(sts_data0);
909 if (unlikely(index >= rds_ring->num_desc))
910 return NULL;
911
912 buffer = &rds_ring->rx_buf_arr[index];
913
914 length = qlcnic_get_sts_totallength(sts_data0);
915 cksum = qlcnic_get_sts_status(sts_data0);
916 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
917
918 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
919 if (!skb)
920 return buffer;
921
922 if (length > rds_ring->skb_size)
923 skb_put(skb, rds_ring->skb_size);
924 else
925 skb_put(skb, length);
926
927 if (pkt_offset)
928 skb_pull(skb, pkt_offset);
929
930 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
931 adapter->stats.rxdropped++;
932 dev_kfree_skb(skb);
933 return buffer;
934 }
935
936 skb->protocol = eth_type_trans(skb, netdev);
937
938 if (vid != 0xffff)
939 __vlan_hwaccel_put_tag(skb, vid);
940
941 napi_gro_receive(&sds_ring->napi, skb);
942
943 adapter->stats.rx_pkts++;
944 adapter->stats.rxbytes += length;
945
946 return buffer;
947}
948
949#define QLC_TCP_HDR_SIZE 20
950#define QLC_TCP_TS_OPTION_SIZE 12
951#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
952
953static struct qlcnic_rx_buffer *
954qlcnic_process_lro(struct qlcnic_adapter *adapter,
955 int ring, u64 sts_data0, u64 sts_data1)
956{
957 struct net_device *netdev = adapter->netdev;
958 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
959 struct qlcnic_rx_buffer *buffer;
960 struct sk_buff *skb;
961 struct qlcnic_host_rds_ring *rds_ring;
962 struct iphdr *iph;
963 struct tcphdr *th;
964 bool push, timestamp;
965 int l2_hdr_offset, l4_hdr_offset;
966 int index;
967 u16 lro_length, length, data_offset;
968 u32 seq_number;
969 u16 vid = 0xffff;
970
971 if (unlikely(ring > adapter->max_rds_rings))
972 return NULL;
973
974 rds_ring = &recv_ctx->rds_rings[ring];
975
976 index = qlcnic_get_lro_sts_refhandle(sts_data0);
977 if (unlikely(index > rds_ring->num_desc))
978 return NULL;
979
980 buffer = &rds_ring->rx_buf_arr[index];
981
982 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
983 lro_length = qlcnic_get_lro_sts_length(sts_data0);
984 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
985 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
986 push = qlcnic_get_lro_sts_push_flag(sts_data0);
987 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
988
989 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
990 if (!skb)
991 return buffer;
992
993 if (timestamp)
994 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
995 else
996 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
997
998 skb_put(skb, lro_length + data_offset);
999
1000 skb_pull(skb, l2_hdr_offset);
1001
1002 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1003 adapter->stats.rxdropped++;
1004 dev_kfree_skb(skb);
1005 return buffer;
1006 }
1007
1008 skb->protocol = eth_type_trans(skb, netdev);
1009
1010 iph = (struct iphdr *)skb->data;
1011 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1012
1013 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1014 iph->tot_len = htons(length);
1015 iph->check = 0;
1016 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1017 th->psh = push;
1018 th->seq = htonl(seq_number);
1019
1020 length = skb->len;
1021
1022 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP)
1023 skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
1024
1025 if (vid != 0xffff)
1026 __vlan_hwaccel_put_tag(skb, vid);
1027 netif_receive_skb(skb);
1028
1029 adapter->stats.lro_pkts++;
1030 adapter->stats.lrobytes += length;
1031
1032 return buffer;
1033}
1034
1035int
1036qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1037{
1038 struct qlcnic_adapter *adapter = sds_ring->adapter;
1039 struct list_head *cur;
1040 struct status_desc *desc;
1041 struct qlcnic_rx_buffer *rxbuf;
1042 u64 sts_data0, sts_data1;
1043
1044 int count = 0;
1045 int opcode, ring, desc_cnt;
1046 u32 consumer = sds_ring->consumer;
1047
1048 while (count < max) {
1049 desc = &sds_ring->desc_head[consumer];
1050 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1051
1052 if (!(sts_data0 & STATUS_OWNER_HOST))
1053 break;
1054
1055 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1056 opcode = qlcnic_get_sts_opcode(sts_data0);
1057
1058 switch (opcode) {
1059 case QLCNIC_RXPKT_DESC:
1060 case QLCNIC_OLD_RXPKT_DESC:
1061 case QLCNIC_SYN_OFFLOAD:
1062 ring = qlcnic_get_sts_type(sts_data0);
1063 rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1064 ring, sts_data0);
1065 break;
1066 case QLCNIC_LRO_DESC:
1067 ring = qlcnic_get_lro_sts_type(sts_data0);
1068 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1069 rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1070 sts_data1);
1071 break;
1072 case QLCNIC_RESPONSE_DESC:
1073 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1074 default:
1075 goto skip;
1076 }
1077
1078 WARN_ON(desc_cnt > 1);
1079
1080 if (likely(rxbuf))
1081 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1082 else
1083 adapter->stats.null_rxbuf++;
1084
1085skip:
1086 for (; desc_cnt > 0; desc_cnt--) {
1087 desc = &sds_ring->desc_head[consumer];
1088 desc->status_desc_data[0] =
1089 cpu_to_le64(STATUS_OWNER_PHANTOM);
1090 consumer = get_next_index(consumer, sds_ring->num_desc);
1091 }
1092 count++;
1093 }
1094
1095 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1096 struct qlcnic_host_rds_ring *rds_ring =
1097 &adapter->recv_ctx->rds_rings[ring];
1098
1099 if (!list_empty(&sds_ring->free_list[ring])) {
1100 list_for_each(cur, &sds_ring->free_list[ring]) {
1101 rxbuf = list_entry(cur,
1102 struct qlcnic_rx_buffer, list);
1103 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1104 }
1105 spin_lock(&rds_ring->lock);
1106 list_splice_tail_init(&sds_ring->free_list[ring],
1107 &rds_ring->free_list);
1108 spin_unlock(&rds_ring->lock);
1109 }
1110
1111 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1112 }
1113
1114 if (count) {
1115 sds_ring->consumer = consumer;
1116 writel(consumer, sds_ring->crb_sts_consumer);
1117 }
1118
1119 return count;
1120}
1121
1122void
1123qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1124 struct qlcnic_host_rds_ring *rds_ring)
1125{
1126 struct rcv_desc *pdesc;
1127 struct qlcnic_rx_buffer *buffer;
1128 int count = 0;
1129 u32 producer;
1130 struct list_head *head;
1131
1132 producer = rds_ring->producer;
1133
1134 head = &rds_ring->free_list;
1135 while (!list_empty(head)) {
1136
1137 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1138
1139 if (!buffer->skb) {
1140 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1141 break;
1142 }
1143
1144 count++;
1145 list_del(&buffer->list);
1146
1147 /* make a rcv descriptor */
1148 pdesc = &rds_ring->desc_head[producer];
1149 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1150 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1151 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1152
1153 producer = get_next_index(producer, rds_ring->num_desc);
1154 }
1155
1156 if (count) {
1157 rds_ring->producer = producer;
1158 writel((producer-1) & (rds_ring->num_desc-1),
1159 rds_ring->crb_rcv_producer);
1160 }
1161}
1162
1163static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1164{
1165 int i;
1166 unsigned char *data = skb->data;
1167
1168 printk(KERN_INFO "\n");
1169 for (i = 0; i < skb->len; i++) {
1170 QLCDB(adapter, DRV, "%02x ", data[i]);
1171 if ((i & 0x0f) == 8)
1172 printk(KERN_INFO "\n");
1173 }
1174}
1175
1176static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
1177 u64 sts_data0)
1178{
1179 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1180 struct sk_buff *skb;
1181 struct qlcnic_host_rds_ring *rds_ring;
1182 int index, length, cksum, pkt_offset;
1183
1184 if (unlikely(ring >= adapter->max_rds_rings))
1185 return;
1186
1187 rds_ring = &recv_ctx->rds_rings[ring];
1188
1189 index = qlcnic_get_sts_refhandle(sts_data0);
1190 length = qlcnic_get_sts_totallength(sts_data0);
1191 if (unlikely(index >= rds_ring->num_desc))
1192 return;
1193
1194 cksum = qlcnic_get_sts_status(sts_data0);
1195 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1196
1197 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1198 if (!skb)
1199 return;
1200
1201 if (length > rds_ring->skb_size)
1202 skb_put(skb, rds_ring->skb_size);
1203 else
1204 skb_put(skb, length);
1205
1206 if (pkt_offset)
1207 skb_pull(skb, pkt_offset);
1208
1209 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1210 adapter->diag_cnt++;
1211 else
1212 dump_skb(skb, adapter);
1213
1214 dev_kfree_skb_any(skb);
1215 adapter->stats.rx_pkts++;
1216 adapter->stats.rxbytes += length;
1217
1218 return;
1219}
1220
1221void
1222qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1223{
1224 struct qlcnic_adapter *adapter = sds_ring->adapter;
1225 struct status_desc *desc;
1226 u64 sts_data0;
1227 int ring, opcode, desc_cnt;
1228
1229 u32 consumer = sds_ring->consumer;
1230
1231 desc = &sds_ring->desc_head[consumer];
1232 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1233
1234 if (!(sts_data0 & STATUS_OWNER_HOST))
1235 return;
1236
1237 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1238 opcode = qlcnic_get_sts_opcode(sts_data0);
1239 switch (opcode) {
1240 case QLCNIC_RESPONSE_DESC:
1241 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1242 break;
1243 default:
1244 ring = qlcnic_get_sts_type(sts_data0);
1245 qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1246 break;
1247 }
1248
1249 for (; desc_cnt > 0; desc_cnt--) {
1250 desc = &sds_ring->desc_head[consumer];
1251 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1252 consumer = get_next_index(consumer, sds_ring->num_desc);
1253 }
1254
1255 sds_ring->consumer = consumer;
1256 writel(consumer, sds_ring->crb_sts_consumer);
1257}
1258
1259void qlcnic_fetch_mac(u32 off1, u32 off2, u8 alt_mac, u8 *mac)
1260{
1261 u32 mac_low, mac_high;
1262 int i;
1263
1264 mac_low = off1;
1265 mac_high = off2;
1266
1267 if (alt_mac) {
1268 mac_low |= (mac_low >> 16) | (mac_high << 16);
1269 mac_high >>= 16;
1270 }
1271
1272 for (i = 0; i < 2; i++)
1273 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1274 for (i = 2; i < 6; i++)
1275 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1276}
1277
1278int qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
1279{
1280 int ring;
1281 struct qlcnic_host_sds_ring *sds_ring;
1282 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1283
1284 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
1285 return -ENOMEM;
1286
1287 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1288 sds_ring = &recv_ctx->sds_rings[ring];
1289
1290 if (ring == adapter->max_sds_rings - 1)
1291 netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
1292 QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
1293 else
1294 netif_napi_add(netdev, &sds_ring->napi,
1295 qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
1296 }
1297
1298 return 0;
1299}
1300
1301void qlcnic_napi_del(struct qlcnic_adapter *adapter)
1302{
1303 int ring;
1304 struct qlcnic_host_sds_ring *sds_ring;
1305 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1306
1307 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1308 sds_ring = &recv_ctx->sds_rings[ring];
1309 netif_napi_del(&sds_ring->napi);
1310 }
1311
1312 qlcnic_free_sds_rings(adapter->recv_ctx);
1313}
1314
1315void qlcnic_napi_enable(struct qlcnic_adapter *adapter)
1316{
1317 int ring;
1318 struct qlcnic_host_sds_ring *sds_ring;
1319 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1320
1321 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1322 return;
1323
1324 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1325 sds_ring = &recv_ctx->sds_rings[ring];
1326 napi_enable(&sds_ring->napi);
1327 qlcnic_enable_int(sds_ring);
1328 }
1329}
1330
1331void qlcnic_napi_disable(struct qlcnic_adapter *adapter)
1332{
1333 int ring;
1334 struct qlcnic_host_sds_ring *sds_ring;
1335 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1336
1337 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1338 return;
1339
1340 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1341 sds_ring = &recv_ctx->sds_rings[ring];
1342 qlcnic_disable_int(sds_ring);
1343 napi_synchronize(&sds_ring->napi);
1344 napi_disable(&sds_ring->napi);
1345 }
1346}
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-13 05:18:51 -0400