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qlcnic: set gso_type
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ethernet / qlogic / qlcnic / qlcnic_io.c
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) & 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)
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
97
98 static void qlcnic_change_filter(struct qlcnic_adapter *adapter,
99 u64 uaddr, __le16 vlan_id,
100 struct qlcnic_host_tx_ring *tx_ring)
101 {
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;
106 u32 producer;
107 u64 word;
108
109 producer = tx_ring->producer;
110 hwdesc = &tx_ring->desc_head[tx_ring->producer];
111
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);
115
116 word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
117 req->req_hdr = cpu_to_le64(word);
118
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);
122
123 vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
124 vlan_req->vlan_id = vlan_id;
125
126 tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
127 smp_mb();
128 }
129
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,
133 struct sk_buff *skb)
134 {
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;
139 u64 src_addr = 0;
140 __le16 vlan_id = 0;
141 u8 hindex;
142
143 if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
144 return;
145
146 if (adapter->fhash.fnum >= adapter->fhash.fmax)
147 return;
148
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]);
155
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) {
159
160 if (jiffies > (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
178 spin_lock(&adapter->mac_learn_lock);
179
180 hlist_add_head(&(fil->fnode), head);
181 adapter->fhash.fnum++;
182
183 spin_unlock(&adapter->mac_learn_lock);
184 }
185
186 static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
187 struct cmd_desc_type0 *first_desc, struct sk_buff *skb)
188 {
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;
197
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);
206 }
207 if (unlikely(adapter->pvid)) {
208 if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
209 return -EIO;
210 if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
211 goto set_flags;
212
213 flags = FLAGS_VLAN_OOB;
214 vlan_tci = adapter->pvid;
215 }
216 set_flags:
217 qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
218 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
219
220 if (*(skb->data) & BIT_0) {
221 flags |= BIT_0;
222 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
223 }
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;
231
232 /* For LSO, we need to copy the MAC/IP/TCP headers into
233 * the descriptor ring */
234 copied = 0;
235 offset = 2;
236
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;
241
242 /* Only in case of TSO on vlan device */
243 flags |= FLAGS_VLAN_TAGGED;
244
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;
248
249 copy_len = min((int)sizeof(struct cmd_desc_type0) -
250 offset, hdr_len + VLAN_HLEN);
251
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);
256
257 skb_copy_from_linear_data_offset(skb, 12,
258 (char *)vh + 16,
259 copy_len - 16);
260 copied = copy_len - VLAN_HLEN;
261 offset = 0;
262 producer = get_next_index(producer, tx_ring->num_desc);
263 }
264
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,
271 (char *)hwdesc +
272 offset, copy_len);
273 copied += copy_len;
274 offset = 0;
275 producer = get_next_index(producer, tx_ring->num_desc);
276 }
277
278 tx_ring->producer = producer;
279 smp_mb();
280 adapter->stats.lso_frames++;
281
282 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
283 if (protocol == ETH_P_IP) {
284 l4proto = ip_hdr(skb)->protocol;
285
286 if (l4proto == IPPROTO_TCP)
287 opcode = TX_TCP_PKT;
288 else if (l4proto == IPPROTO_UDP)
289 opcode = TX_UDP_PKT;
290 } else if (protocol == ETH_P_IPV6) {
291 l4proto = ipv6_hdr(skb)->nexthdr;
292
293 if (l4proto == IPPROTO_TCP)
294 opcode = TX_TCPV6_PKT;
295 else if (l4proto == IPPROTO_UDP)
296 opcode = TX_UDPV6_PKT;
297 }
298 }
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);
302
303 return 0;
304 }
305
306 static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
307 struct qlcnic_cmd_buffer *pbuf)
308 {
309 struct qlcnic_skb_frag *nf;
310 struct skb_frag_struct *frag;
311 int i, nr_frags;
312 dma_addr_t map;
313
314 nr_frags = skb_shinfo(skb)->nr_frags;
315 nf = &pbuf->frag_array[0];
316
317 map = pci_map_single(pdev, skb->data, skb_headlen(skb),
318 PCI_DMA_TODEVICE);
319 if (pci_dma_mapping_error(pdev, map))
320 goto out_err;
321
322 nf->dma = map;
323 nf->length = skb_headlen(skb);
324
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),
329 DMA_TO_DEVICE);
330 if (dma_mapping_error(&pdev->dev, map))
331 goto unwind;
332
333 nf->dma = map;
334 nf->length = skb_frag_size(frag);
335 }
336
337 return 0;
338
339 unwind:
340 while (--i >= 0) {
341 nf = &pbuf->frag_array[i+1];
342 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
343 }
344
345 nf = &pbuf->frag_array[0];
346 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
347
348 out_err:
349 return -ENOMEM;
350 }
351
352 static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
353 struct qlcnic_cmd_buffer *pbuf)
354 {
355 struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
356 int i, nr_frags = skb_shinfo(skb)->nr_frags;
357
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);
361 }
362
363 nf = &pbuf->frag_array[0];
364 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
365 pbuf->skb = NULL;
366 }
367
368 static inline void qlcnic_clear_cmddesc(u64 *desc)
369 {
370 desc[0] = 0ULL;
371 desc[2] = 0ULL;
372 desc[7] = 0ULL;
373 }
374
375 netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
376 {
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;
383 struct ethhdr *phdr;
384 int i, k, frag_count, delta = 0;
385 u32 producer, num_txd;
386
387 num_txd = tx_ring->num_desc;
388
389 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
390 netif_stop_queue(netdev);
391 return NETDEV_TX_BUSY;
392 }
393
394 if (adapter->flags & QLCNIC_MACSPOOF) {
395 phdr = (struct ethhdr *)skb->data;
396 if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
397 goto drop_packet;
398 }
399
400 frag_count = skb_shinfo(skb)->nr_frags + 1;
401 /* 14 frags supported for normal packet and
402 * 32 frags supported for TSO packet
403 */
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]);
407
408 if (!__pskb_pull_tail(skb, delta))
409 goto drop_packet;
410
411 frag_count = 1 + skb_shinfo(skb)->nr_frags;
412 }
413
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);
418 } else {
419 adapter->stats.xmit_off++;
420 return NETDEV_TX_BUSY;
421 }
422 }
423
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);
430
431 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
432 adapter->stats.tx_dma_map_error++;
433 goto drop_packet;
434 }
435
436 pbuf->skb = skb;
437 pbuf->frag_count = frag_count;
438
439 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
440 qlcnic_set_tx_port(first_desc, adapter->portnum);
441
442 for (i = 0; i < frag_count; i++) {
443 k = i % 4;
444
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;
451 }
452
453 buffrag = &pbuf->frag_array[i];
454 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
455 switch (k) {
456 case 0:
457 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
458 break;
459 case 1:
460 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
461 break;
462 case 2:
463 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
464 break;
465 case 3:
466 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
467 break;
468 }
469 }
470
471 tx_ring->producer = get_next_index(producer, num_txd);
472 smp_mb();
473
474 if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb)))
475 goto unwind_buff;
476
477 if (adapter->mac_learn)
478 qlcnic_send_filter(adapter, tx_ring, first_desc, skb);
479
480 adapter->stats.txbytes += skb->len;
481 adapter->stats.xmitcalled++;
482
483 qlcnic_update_cmd_producer(tx_ring);
484
485 return NETDEV_TX_OK;
486
487 unwind_buff:
488 qlcnic_unmap_buffers(pdev, skb, pbuf);
489 drop_packet:
490 adapter->stats.txdropped++;
491 dev_kfree_skb_any(skb);
492 return NETDEV_TX_OK;
493 }
494
495 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
496 {
497 struct net_device *netdev = adapter->netdev;
498
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);
505 }
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);
512 }
513 }
514 }
515
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)
519 {
520 struct sk_buff *skb;
521 dma_addr_t dma;
522 struct pci_dev *pdev = adapter->pdev;
523
524 skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
525 if (!skb) {
526 adapter->stats.skb_alloc_failure++;
527 return -ENOMEM;
528 }
529
530 skb_reserve(skb, NET_IP_ALIGN);
531 dma = pci_map_single(pdev, skb->data, rds_ring->dma_size,
532 PCI_DMA_FROMDEVICE);
533
534 if (pci_dma_mapping_error(pdev, dma)) {
535 adapter->stats.rx_dma_map_error++;
536 dev_kfree_skb_any(skb);
537 return -ENOMEM;
538 }
539
540 buffer->skb = skb;
541 buffer->dma = dma;
542
543 return 0;
544 }
545
546 static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
547 struct qlcnic_host_rds_ring *rds_ring)
548 {
549 struct rcv_desc *pdesc;
550 struct qlcnic_rx_buffer *buffer;
551 int count = 0;
552 uint32_t producer;
553 struct list_head *head;
554
555 if (!spin_trylock(&rds_ring->lock))
556 return;
557
558 producer = rds_ring->producer;
559 head = &rds_ring->free_list;
560
561 while (!list_empty(head)) {
562 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
563
564 if (!buffer->skb) {
565 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
566 break;
567 }
568
569 count++;
570 list_del(&buffer->list);
571
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);
578 }
579
580 if (count) {
581 rds_ring->producer = producer;
582 writel((producer - 1) & (rds_ring->num_desc - 1),
583 rds_ring->crb_rcv_producer);
584 }
585
586 spin_unlock(&rds_ring->lock);
587 }
588
589 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
590 {
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;
598
599 if (!spin_trylock(&adapter->tx_clean_lock))
600 return 1;
601
602 sw_consumer = tx_ring->sw_consumer;
603 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
604
605 while (sw_consumer != hw_consumer) {
606 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
607 if (buffer->skb) {
608 frag = &buffer->frag_array[0];
609 pci_unmap_single(pdev, frag->dma, frag->length,
610 PCI_DMA_TODEVICE);
611 frag->dma = 0ULL;
612 for (i = 1; i < buffer->frag_count; i++) {
613 frag++;
614 pci_unmap_page(pdev, frag->dma, frag->length,
615 PCI_DMA_TODEVICE);
616 frag->dma = 0ULL;
617 }
618
619 adapter->stats.xmitfinished++;
620 dev_kfree_skb_any(buffer->skb);
621 buffer->skb = NULL;
622 }
623
624 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
625 if (++count >= MAX_STATUS_HANDLE)
626 break;
627 }
628
629 if (count && netif_running(netdev)) {
630 tx_ring->sw_consumer = sw_consumer;
631
632 smp_mb();
633
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++;
638 }
639 }
640 adapter->tx_timeo_cnt = 0;
641 }
642 /*
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.
646 *
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
650 * interrupt.
651 *
652 * There is still a possible race condition and the host could miss an
653 * interrupt. The card has to take care of this.
654 */
655 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
656 done = (sw_consumer == hw_consumer);
657
658 spin_unlock(&adapter->tx_clean_lock);
659
660 return done;
661 }
662
663 static int qlcnic_poll(struct napi_struct *napi, int budget)
664 {
665 struct qlcnic_host_sds_ring *sds_ring;
666 struct qlcnic_adapter *adapter;
667 int tx_complete, work_done;
668
669 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
670 adapter = sds_ring->adapter;
671
672 tx_complete = qlcnic_process_cmd_ring(adapter);
673 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
674
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);
679 }
680
681 return work_done;
682 }
683
684 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
685 {
686 struct qlcnic_host_sds_ring *sds_ring;
687 struct qlcnic_adapter *adapter;
688 int work_done;
689
690 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
691 adapter = sds_ring->adapter;
692
693 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
694
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);
699 }
700
701 return work_done;
702 }
703
704 static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
705 struct qlcnic_fw_msg *msg)
706 {
707 u32 cable_OUI;
708 u16 cable_len, link_speed;
709 u8 link_status, module, duplex, autoneg, lb_status = 0;
710 struct net_device *netdev = adapter->netdev;
711
712 adapter->ahw->has_link_events = 1;
713
714 cable_OUI = msg->body[1] & 0xffffffff;
715 cable_len = (msg->body[1] >> 32) & 0xffff;
716 link_speed = (msg->body[1] >> 48) & 0xffff;
717
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;
722
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",
730 cable_len);
731
732 if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
733 lb_status == QLCNIC_ELB_MODE))
734 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
735
736 qlcnic_advert_link_change(adapter, link_status);
737
738 if (duplex == LINKEVENT_FULL_DUPLEX)
739 adapter->ahw->link_duplex = DUPLEX_FULL;
740 else
741 adapter->ahw->link_duplex = DUPLEX_HALF;
742
743 adapter->ahw->module_type = module;
744 adapter->ahw->link_autoneg = autoneg;
745
746 if (link_status) {
747 adapter->ahw->link_speed = link_speed;
748 } else {
749 adapter->ahw->link_speed = SPEED_UNKNOWN;
750 adapter->ahw->link_duplex = DUPLEX_UNKNOWN;
751 }
752 }
753
754 static void qlcnic_handle_fw_message(int desc_cnt, int index,
755 struct qlcnic_host_sds_ring *sds_ring)
756 {
757 struct qlcnic_fw_msg msg;
758 struct status_desc *desc;
759 struct qlcnic_adapter *adapter;
760 struct device *dev;
761 int i = 0, opcode, ret;
762
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]);
767
768 index = get_next_index(index, sds_ring->num_desc);
769 desc_cnt--;
770 }
771
772 adapter = sds_ring->adapter;
773 dev = &adapter->pdev->dev;
774 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
775
776 switch (opcode) {
777 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
778 qlcnic_handle_linkevent(adapter, &msg);
779 break;
780 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
781 ret = (u32)(msg.body[1]);
782 switch (ret) {
783 case 0:
784 adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
785 break;
786 case 1:
787 dev_info(dev, "loopback already in progress\n");
788 adapter->ahw->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
789 break;
790 case 2:
791 dev_info(dev, "loopback cable is not connected\n");
792 adapter->ahw->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
793 break;
794 default:
795 dev_info(dev,
796 "loopback configure request failed, err %x\n",
797 ret);
798 adapter->ahw->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
799 break;
800 }
801 break;
802 default:
803 break;
804 }
805 }
806
807 static struct sk_buff *
808 qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
809 struct qlcnic_host_rds_ring *rds_ring, u16 index,
810 u16 cksum)
811 {
812 struct qlcnic_rx_buffer *buffer;
813 struct sk_buff *skb;
814
815 buffer = &rds_ring->rx_buf_arr[index];
816
817 if (unlikely(buffer->skb == NULL)) {
818 WARN_ON(1);
819 return NULL;
820 }
821
822 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
823 PCI_DMA_FROMDEVICE);
824
825 skb = buffer->skb;
826
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;
831 } else {
832 skb_checksum_none_assert(skb);
833 }
834
835 buffer->skb = NULL;
836
837 return skb;
838 }
839
840 static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
841 struct sk_buff *skb, u16 *vlan_tag)
842 {
843 struct ethhdr *eth_hdr;
844
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);
849 }
850 if (!adapter->pvid)
851 return 0;
852
853 if (*vlan_tag == adapter->pvid) {
854 /* Outer vlan tag. Packet should follow non-vlan path */
855 *vlan_tag = 0xffff;
856 return 0;
857 }
858 if (adapter->flags & QLCNIC_TAGGING_ENABLED)
859 return 0;
860
861 return -EINVAL;
862 }
863
864 static struct qlcnic_rx_buffer *
865 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
866 struct qlcnic_host_sds_ring *sds_ring, int ring,
867 u64 sts_data0)
868 {
869 struct net_device *netdev = adapter->netdev;
870 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
871 struct qlcnic_rx_buffer *buffer;
872 struct sk_buff *skb;
873 struct qlcnic_host_rds_ring *rds_ring;
874 int index, length, cksum, pkt_offset;
875 u16 vid = 0xffff;
876
877 if (unlikely(ring >= adapter->max_rds_rings))
878 return NULL;
879
880 rds_ring = &recv_ctx->rds_rings[ring];
881
882 index = qlcnic_get_sts_refhandle(sts_data0);
883 if (unlikely(index >= rds_ring->num_desc))
884 return NULL;
885
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);
890
891 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
892 if (!skb)
893 return buffer;
894
895 if (length > rds_ring->skb_size)
896 skb_put(skb, rds_ring->skb_size);
897 else
898 skb_put(skb, length);
899
900 if (pkt_offset)
901 skb_pull(skb, pkt_offset);
902
903 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
904 adapter->stats.rxdropped++;
905 dev_kfree_skb(skb);
906 return buffer;
907 }
908
909 skb->protocol = eth_type_trans(skb, netdev);
910
911 if (vid != 0xffff)
912 __vlan_hwaccel_put_tag(skb, vid);
913
914 napi_gro_receive(&sds_ring->napi, skb);
915
916 adapter->stats.rx_pkts++;
917 adapter->stats.rxbytes += length;
918
919 return buffer;
920 }
921
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)
925
926 static struct qlcnic_rx_buffer *
927 qlcnic_process_lro(struct qlcnic_adapter *adapter,
928 int ring, u64 sts_data0, u64 sts_data1)
929 {
930 struct net_device *netdev = adapter->netdev;
931 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
932 struct qlcnic_rx_buffer *buffer;
933 struct sk_buff *skb;
934 struct qlcnic_host_rds_ring *rds_ring;
935 struct iphdr *iph;
936 struct tcphdr *th;
937 bool push, timestamp;
938 int index, l2_hdr_offset, l4_hdr_offset;
939 u16 lro_length, length, data_offset, vid = 0xffff;
940 u32 seq_number;
941
942 if (unlikely(ring > adapter->max_rds_rings))
943 return NULL;
944
945 rds_ring = &recv_ctx->rds_rings[ring];
946
947 index = qlcnic_get_lro_sts_refhandle(sts_data0);
948 if (unlikely(index > rds_ring->num_desc))
949 return NULL;
950
951 buffer = &rds_ring->rx_buf_arr[index];
952
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);
959
960 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
961 if (!skb)
962 return buffer;
963
964 if (timestamp)
965 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
966 else
967 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
968
969 skb_put(skb, lro_length + data_offset);
970 skb_pull(skb, l2_hdr_offset);
971
972 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
973 adapter->stats.rxdropped++;
974 dev_kfree_skb(skb);
975 return buffer;
976 }
977
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);
983 iph->check = 0;
984 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
985 th->psh = push;
986 th->seq = htonl(seq_number);
987 length = skb->len;
988
989 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
990 skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
991 if (skb->protocol == htons(ETH_P_IPV6))
992 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
993 else
994 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
995 }
996
997 if (vid != 0xffff)
998 __vlan_hwaccel_put_tag(skb, vid);
999 netif_receive_skb(skb);
1000
1001 adapter->stats.lro_pkts++;
1002 adapter->stats.lrobytes += length;
1003
1004 return buffer;
1005 }
1006
1007 int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1008 {
1009 struct qlcnic_host_rds_ring *rds_ring;
1010 struct qlcnic_adapter *adapter = sds_ring->adapter;
1011 struct list_head *cur;
1012 struct status_desc *desc;
1013 struct qlcnic_rx_buffer *rxbuf;
1014 u64 sts_data0, sts_data1;
1015 __le64 owner_phantom = cpu_to_le64(STATUS_OWNER_PHANTOM);
1016 int opcode, ring, desc_cnt, count = 0;
1017 u32 consumer = sds_ring->consumer;
1018
1019 while (count < max) {
1020 desc = &sds_ring->desc_head[consumer];
1021 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1022
1023 if (!(sts_data0 & STATUS_OWNER_HOST))
1024 break;
1025
1026 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1027 opcode = qlcnic_get_sts_opcode(sts_data0);
1028
1029 switch (opcode) {
1030 case QLCNIC_RXPKT_DESC:
1031 case QLCNIC_OLD_RXPKT_DESC:
1032 case QLCNIC_SYN_OFFLOAD:
1033 ring = qlcnic_get_sts_type(sts_data0);
1034 rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring,
1035 sts_data0);
1036 break;
1037 case QLCNIC_LRO_DESC:
1038 ring = qlcnic_get_lro_sts_type(sts_data0);
1039 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1040 rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1041 sts_data1);
1042 break;
1043 case QLCNIC_RESPONSE_DESC:
1044 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1045 default:
1046 goto skip;
1047 }
1048
1049 WARN_ON(desc_cnt > 1);
1050
1051 if (likely(rxbuf))
1052 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1053 else
1054 adapter->stats.null_rxbuf++;
1055
1056 skip:
1057 for (; desc_cnt > 0; desc_cnt--) {
1058 desc = &sds_ring->desc_head[consumer];
1059 desc->status_desc_data[0] = owner_phantom;
1060 consumer = get_next_index(consumer, sds_ring->num_desc);
1061 }
1062 count++;
1063 }
1064
1065 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1066 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1067
1068 if (!list_empty(&sds_ring->free_list[ring])) {
1069 list_for_each(cur, &sds_ring->free_list[ring]) {
1070 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1071 list);
1072 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1073 }
1074 spin_lock(&rds_ring->lock);
1075 list_splice_tail_init(&sds_ring->free_list[ring],
1076 &rds_ring->free_list);
1077 spin_unlock(&rds_ring->lock);
1078 }
1079
1080 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1081 }
1082
1083 if (count) {
1084 sds_ring->consumer = consumer;
1085 writel(consumer, sds_ring->crb_sts_consumer);
1086 }
1087
1088 return count;
1089 }
1090
1091 void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1092 struct qlcnic_host_rds_ring *rds_ring)
1093 {
1094 struct rcv_desc *pdesc;
1095 struct qlcnic_rx_buffer *buffer;
1096 int count = 0;
1097 u32 producer;
1098 struct list_head *head;
1099
1100 producer = rds_ring->producer;
1101 head = &rds_ring->free_list;
1102
1103 while (!list_empty(head)) {
1104
1105 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1106
1107 if (!buffer->skb) {
1108 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1109 break;
1110 }
1111
1112 count++;
1113 list_del(&buffer->list);
1114
1115 /* make a rcv descriptor */
1116 pdesc = &rds_ring->desc_head[producer];
1117 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1118 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1119 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1120 producer = get_next_index(producer, rds_ring->num_desc);
1121 }
1122
1123 if (count) {
1124 rds_ring->producer = producer;
1125 writel((producer-1) & (rds_ring->num_desc-1),
1126 rds_ring->crb_rcv_producer);
1127 }
1128 }
1129
1130 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1131 {
1132 int i;
1133 unsigned char *data = skb->data;
1134
1135 pr_info(KERN_INFO "\n");
1136 for (i = 0; i < skb->len; i++) {
1137 QLCDB(adapter, DRV, "%02x ", data[i]);
1138 if ((i & 0x0f) == 8)
1139 pr_info(KERN_INFO "\n");
1140 }
1141 }
1142
1143 static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
1144 u64 sts_data0)
1145 {
1146 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1147 struct sk_buff *skb;
1148 struct qlcnic_host_rds_ring *rds_ring;
1149 int index, length, cksum, pkt_offset;
1150
1151 if (unlikely(ring >= adapter->max_rds_rings))
1152 return;
1153
1154 rds_ring = &recv_ctx->rds_rings[ring];
1155
1156 index = qlcnic_get_sts_refhandle(sts_data0);
1157 length = qlcnic_get_sts_totallength(sts_data0);
1158 if (unlikely(index >= rds_ring->num_desc))
1159 return;
1160
1161 cksum = qlcnic_get_sts_status(sts_data0);
1162 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1163
1164 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1165 if (!skb)
1166 return;
1167
1168 if (length > rds_ring->skb_size)
1169 skb_put(skb, rds_ring->skb_size);
1170 else
1171 skb_put(skb, length);
1172
1173 if (pkt_offset)
1174 skb_pull(skb, pkt_offset);
1175
1176 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1177 adapter->ahw->diag_cnt++;
1178 else
1179 dump_skb(skb, adapter);
1180
1181 dev_kfree_skb_any(skb);
1182 adapter->stats.rx_pkts++;
1183 adapter->stats.rxbytes += length;
1184
1185 return;
1186 }
1187
1188 void qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1189 {
1190 struct qlcnic_adapter *adapter = sds_ring->adapter;
1191 struct status_desc *desc;
1192 u64 sts_data0;
1193 int ring, opcode, desc_cnt;
1194
1195 u32 consumer = sds_ring->consumer;
1196
1197 desc = &sds_ring->desc_head[consumer];
1198 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1199
1200 if (!(sts_data0 & STATUS_OWNER_HOST))
1201 return;
1202
1203 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1204 opcode = qlcnic_get_sts_opcode(sts_data0);
1205 switch (opcode) {
1206 case QLCNIC_RESPONSE_DESC:
1207 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1208 break;
1209 default:
1210 ring = qlcnic_get_sts_type(sts_data0);
1211 qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1212 break;
1213 }
1214
1215 for (; desc_cnt > 0; desc_cnt--) {
1216 desc = &sds_ring->desc_head[consumer];
1217 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1218 consumer = get_next_index(consumer, sds_ring->num_desc);
1219 }
1220
1221 sds_ring->consumer = consumer;
1222 writel(consumer, sds_ring->crb_sts_consumer);
1223 }
1224
1225 void qlcnic_fetch_mac(u32 off1, u32 off2, u8 alt_mac, u8 *mac)
1226 {
1227 u32 mac_low, mac_high;
1228 int i;
1229
1230 mac_low = off1;
1231 mac_high = off2;
1232
1233 if (alt_mac) {
1234 mac_low |= (mac_low >> 16) | (mac_high << 16);
1235 mac_high >>= 16;
1236 }
1237
1238 for (i = 0; i < 2; i++)
1239 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1240 for (i = 2; i < 6; i++)
1241 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1242 }
1243
1244 int qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
1245 {
1246 int ring, max_sds_rings;
1247 struct qlcnic_host_sds_ring *sds_ring;
1248 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1249
1250 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
1251 return -ENOMEM;
1252
1253 max_sds_rings = adapter->max_sds_rings;
1254
1255 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1256 sds_ring = &recv_ctx->sds_rings[ring];
1257
1258 if (ring == max_sds_rings - 1)
1259 netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
1260 QLCNIC_NETDEV_WEIGHT / max_sds_rings);
1261 else
1262 netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll,
1263 QLCNIC_NETDEV_WEIGHT*2);
1264 }
1265
1266 return 0;
1267 }
1268
1269 void qlcnic_napi_del(struct qlcnic_adapter *adapter)
1270 {
1271 int ring;
1272 struct qlcnic_host_sds_ring *sds_ring;
1273 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1274
1275 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1276 sds_ring = &recv_ctx->sds_rings[ring];
1277 netif_napi_del(&sds_ring->napi);
1278 }
1279
1280 qlcnic_free_sds_rings(adapter->recv_ctx);
1281 }
1282
1283 void qlcnic_napi_enable(struct qlcnic_adapter *adapter)
1284 {
1285 int ring;
1286 struct qlcnic_host_sds_ring *sds_ring;
1287 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1288
1289 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1290 return;
1291
1292 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1293 sds_ring = &recv_ctx->sds_rings[ring];
1294 napi_enable(&sds_ring->napi);
1295 qlcnic_enable_int(sds_ring);
1296 }
1297 }
1298
1299 void qlcnic_napi_disable(struct qlcnic_adapter *adapter)
1300 {
1301 int ring;
1302 struct qlcnic_host_sds_ring *sds_ring;
1303 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1304
1305 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1306 return;
1307
1308 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1309 sds_ring = &recv_ctx->sds_rings[ring];
1310 qlcnic_disable_int(sds_ring);
1311 napi_synchronize(&sds_ring->napi);
1312 napi_disable(&sds_ring->napi);
1313 }
1314 }
kernel source for telekom puls (alcatel/mediatek)