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qlcnic: 83xx data path routines
[linux-2.6-block.git] / drivers / net / ethernet / qlogic / qlcnic / qlcnic_io.c
CommitLineData
c70001a9
SC		 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
c70001a9
SC		 8#define TX_ETHER_PKT 0x01
9#define TX_TCP_PKT 0x02
10#define TX_UDP_PKT 0x03
11#define TX_IP_PKT 0x04
12#define TX_TCP_LSO 0x05
13#define TX_TCP_LSO6 0x06
14#define TX_TCPV6_PKT 0x0b
15#define TX_UDPV6_PKT 0x0c
16#define FLAGS_VLAN_TAGGED 0x10
17#define FLAGS_VLAN_OOB 0x40
18
19#define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
20 (cmd_desc)->vlan_TCI = cpu_to_le16(v);
21#define qlcnic_set_cmd_desc_port(cmd_desc, var) \
22 ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
23#define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
24 ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
25
26#define qlcnic_set_tx_port(_desc, _port) \
27 ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
28
29#define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
30 ((_desc)->flags_opcode |= \
31 cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
32
33#define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
34 ((_desc)->nfrags__length = \
35 cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
36
37/* owner bits of status_desc */
38#define STATUS_OWNER_HOST (0x1ULL << 56)
39#define STATUS_OWNER_PHANTOM (0x2ULL << 56)
40
41/* Status descriptor:
42 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
43 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
44 53-55 desc_cnt, 56-57 owner, 58-63 opcode
45 */
46#define qlcnic_get_sts_port(sts_data) \
47 ((sts_data) & 0x0F)
48#define qlcnic_get_sts_status(sts_data) \
49 (((sts_data) >> 4) & 0x0F)
50#define qlcnic_get_sts_type(sts_data) \
51 (((sts_data) >> 8) & 0x0F)
52#define qlcnic_get_sts_totallength(sts_data) \
53 (((sts_data) >> 12) & 0xFFFF)
54#define qlcnic_get_sts_refhandle(sts_data) \
55 (((sts_data) >> 28) & 0xFFFF)
56#define qlcnic_get_sts_prot(sts_data) \
57 (((sts_data) >> 44) & 0x0F)
58#define qlcnic_get_sts_pkt_offset(sts_data) \
59 (((sts_data) >> 48) & 0x1F)
60#define qlcnic_get_sts_desc_cnt(sts_data) \
61 (((sts_data) >> 53) & 0x7)
62#define qlcnic_get_sts_opcode(sts_data) \
63 (((sts_data) >> 58) & 0x03F)
64
65#define qlcnic_get_lro_sts_refhandle(sts_data) \
5796bd04 66 ((sts_data) & 0x07FFF)
c70001a9
SC		 67#define qlcnic_get_lro_sts_length(sts_data) \
68 (((sts_data) >> 16) & 0x0FFFF)
69#define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
70 (((sts_data) >> 32) & 0x0FF)
71#define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
72 (((sts_data) >> 40) & 0x0FF)
73#define qlcnic_get_lro_sts_timestamp(sts_data) \
74 (((sts_data) >> 48) & 0x1)
75#define qlcnic_get_lro_sts_type(sts_data) \
76 (((sts_data) >> 49) & 0x7)
77#define qlcnic_get_lro_sts_push_flag(sts_data) \
78 (((sts_data) >> 52) & 0x1)
79#define qlcnic_get_lro_sts_seq_number(sts_data) \
80 ((sts_data) & 0x0FFFFFFFF)
81#define qlcnic_get_lro_sts_mss(sts_data1) \
82 ((sts_data1 >> 32) & 0x0FFFF)
83
84/* opcode field in status_desc */
85#define QLCNIC_SYN_OFFLOAD 0x03
86#define QLCNIC_RXPKT_DESC 0x04
87#define QLCNIC_OLD_RXPKT_DESC 0x3f
88#define QLCNIC_RESPONSE_DESC 0x05
89#define QLCNIC_LRO_DESC 0x12
90
4be41e92
SC		 91#define QLCNIC_TX_POLL_BUDGET 128
92#define QLCNIC_TCP_HDR_SIZE 20
93#define QLCNIC_TCP_TS_OPTION_SIZE 12
94#define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63)
95#define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM)
96
97#define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE)
98
c70001a9
SC		 99/* for status field in status_desc */
100#define STATUS_CKSUM_LOOP 0
101#define STATUS_CKSUM_OK 2
d17dd0d9 102
4be41e92
SC		 103#define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF)
104#define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF)
105#define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7)
106#define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF)
107#define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF)
108#define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF)
109#define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF)
110#define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF)
111#define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7)
112#define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1)
113#define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1)
114#define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1)
115#define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1)
116
117struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *,
118 struct qlcnic_host_rds_ring *, u16, u16);
119
120inline void qlcnic_83xx_enable_tx_intr(struct qlcnic_adapter *adapter,
121 struct qlcnic_host_tx_ring *tx_ring)
122{
123 writel(0, tx_ring->crb_intr_mask);
124}
125
126inline void qlcnic_83xx_disable_tx_intr(struct qlcnic_adapter *adapter,
127 struct qlcnic_host_tx_ring *tx_ring)
128{
129 writel(1, tx_ring->crb_intr_mask);
130}
131
132static inline u8 qlcnic_mac_hash(u64 mac)
133{
134 return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff));
135}
136
137static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter,
138 u16 handle, u8 ring_id)
139{
140 if (adapter->pdev->device == PCI_DEVICE_ID_QLOGIC_QLE834X)
141 return handle | (ring_id << 15);
142 else
143 return handle;
144}
145
7e2cf4fe
SC		 146void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr,
147 __le16 vlan_id)
c70001a9
SC		 148{
149 struct cmd_desc_type0 *hwdesc;
150 struct qlcnic_nic_req *req;
151 struct qlcnic_mac_req *mac_req;
152 struct qlcnic_vlan_req *vlan_req;
7e2cf4fe 153 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
c70001a9
SC		 154 u32 producer;
155 u64 word;
156
157 producer = tx_ring->producer;
158 hwdesc = &tx_ring->desc_head[tx_ring->producer];
159
160 req = (struct qlcnic_nic_req *)hwdesc;
161 memset(req, 0, sizeof(struct qlcnic_nic_req));
162 req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
163
164 word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
165 req->req_hdr = cpu_to_le64(word);
166
167 mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
168 mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
169 memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN);
170
171 vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
172 vlan_req->vlan_id = vlan_id;
173
174 tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
175 smp_mb();
176}
177
d17dd0d9 178static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
d17dd0d9
SC		 179 struct cmd_desc_type0 *first_desc,
180 struct sk_buff *skb)
c70001a9 181{
c70001a9
SC		 182 struct qlcnic_filter *fil, *tmp_fil;
183 struct hlist_node *tmp_hnode, *n;
184 struct hlist_head *head;
4be41e92 185 struct net_device *netdev = adapter->netdev;
7e2cf4fe 186 struct ethhdr *phdr = (struct ethhdr *)(skb->data);
c70001a9
SC		 187 u64 src_addr = 0;
188 __le16 vlan_id = 0;
189 u8 hindex;
190
4be41e92 191 if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
c70001a9
SC		 192 return;
193
4be41e92
SC		 194 if (adapter->fhash.fnum >= adapter->fhash.fmax) {
195 adapter->stats.mac_filter_limit_overrun++;
196 netdev_info(netdev, "Can not add more than %d mac addresses\n",
197 adapter->fhash.fmax);
c70001a9 198 return;
4be41e92 199 }
c70001a9 200
7e2cf4fe 201 /* Only NPAR capable devices support vlan based learning */
c70001a9
SC		 202 if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
203 vlan_id = first_desc->vlan_TCI;
204 memcpy(&src_addr, phdr->h_source, ETH_ALEN);
4be41e92 205 hindex = qlcnic_mac_hash(src_addr) & (adapter->fhash.fbucket_size - 1);
c70001a9
SC		 206 head = &(adapter->fhash.fhead[hindex]);
207
208 hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
209 if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
7e2cf4fe 210 tmp_fil->vlan_id == vlan_id) {
d17dd0d9 211 if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
7e2cf4fe
SC		 212 qlcnic_change_filter(adapter, &src_addr,
213 vlan_id);
c70001a9
SC		 214 tmp_fil->ftime = jiffies;
215 return;
216 }
217 }
218
219 fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
220 if (!fil)
221 return;
222
7e2cf4fe 223 qlcnic_change_filter(adapter, &src_addr, vlan_id);
c70001a9
SC		 224 fil->ftime = jiffies;
225 fil->vlan_id = vlan_id;
226 memcpy(fil->faddr, &src_addr, ETH_ALEN);
227 spin_lock(&adapter->mac_learn_lock);
228 hlist_add_head(&(fil->fnode), head);
229 adapter->fhash.fnum++;
230 spin_unlock(&adapter->mac_learn_lock);
231}
232
d17dd0d9
SC		 233static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
234 struct cmd_desc_type0 *first_desc, struct sk_buff *skb)
c70001a9 235{
d17dd0d9 236 u8 l4proto, opcode = 0, hdr_len = 0;
c70001a9 237 u16 flags = 0, vlan_tci = 0;
d17dd0d9 238 int copied, offset, copy_len, size;
c70001a9
SC		 239 struct cmd_desc_type0 *hwdesc;
240 struct vlan_ethhdr *vh;
241 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
242 u16 protocol = ntohs(skb->protocol);
243 u32 producer = tx_ring->producer;
244
245 if (protocol == ETH_P_8021Q) {
246 vh = (struct vlan_ethhdr *)skb->data;
247 flags = FLAGS_VLAN_TAGGED;
248 vlan_tci = ntohs(vh->h_vlan_TCI);
249 protocol = ntohs(vh->h_vlan_encapsulated_proto);
250 } else if (vlan_tx_tag_present(skb)) {
251 flags = FLAGS_VLAN_OOB;
252 vlan_tci = vlan_tx_tag_get(skb);
253 }
254 if (unlikely(adapter->pvid)) {
255 if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
256 return -EIO;
257 if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
258 goto set_flags;
259
260 flags = FLAGS_VLAN_OOB;
261 vlan_tci = adapter->pvid;
262 }
263set_flags:
264 qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
265 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
266
267 if (*(skb->data) & BIT_0) {
268 flags |= BIT_0;
269 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
270 }
271 opcode = TX_ETHER_PKT;
272 if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
d17dd0d9 273 skb_shinfo(skb)->gso_size > 0) {
c70001a9 274 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
c70001a9
SC		 275 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
276 first_desc->total_hdr_length = hdr_len;
c70001a9
SC		 277 opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO;
278
279 /* For LSO, we need to copy the MAC/IP/TCP headers into
280 * the descriptor ring */
281 copied = 0;
282 offset = 2;
283
284 if (flags & FLAGS_VLAN_OOB) {
285 first_desc->total_hdr_length += VLAN_HLEN;
286 first_desc->tcp_hdr_offset = VLAN_HLEN;
287 first_desc->ip_hdr_offset = VLAN_HLEN;
d17dd0d9 288
c70001a9
SC		 289 /* Only in case of TSO on vlan device */
290 flags |= FLAGS_VLAN_TAGGED;
291
292 /* Create a TSO vlan header template for firmware */
c70001a9
SC		 293 hwdesc = &tx_ring->desc_head[producer];
294 tx_ring->cmd_buf_arr[producer].skb = NULL;
295
296 copy_len = min((int)sizeof(struct cmd_desc_type0) -
d17dd0d9 297 offset, hdr_len + VLAN_HLEN);
c70001a9
SC		 298
299 vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
300 skb_copy_from_linear_data(skb, vh, 12);
301 vh->h_vlan_proto = htons(ETH_P_8021Q);
302 vh->h_vlan_TCI = htons(vlan_tci);
303
304 skb_copy_from_linear_data_offset(skb, 12,
d17dd0d9
SC		 305 (char *)vh + 16,
306 copy_len - 16);
c70001a9
SC		 307 copied = copy_len - VLAN_HLEN;
308 offset = 0;
c70001a9
SC		 309 producer = get_next_index(producer, tx_ring->num_desc);
310 }
311
312 while (copied < hdr_len) {
d17dd0d9
SC		 313 size = (int)sizeof(struct cmd_desc_type0) - offset;
314 copy_len = min(size, (hdr_len - copied));
c70001a9
SC		 315 hwdesc = &tx_ring->desc_head[producer];
316 tx_ring->cmd_buf_arr[producer].skb = NULL;
c70001a9 317 skb_copy_from_linear_data_offset(skb, copied,
d17dd0d9
SC		 318 (char *)hwdesc +
319 offset, copy_len);
c70001a9
SC		 320 copied += copy_len;
321 offset = 0;
c70001a9
SC		 322 producer = get_next_index(producer, tx_ring->num_desc);
323 }
324
325 tx_ring->producer = producer;
326 smp_mb();
327 adapter->stats.lso_frames++;
328
329 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
c70001a9
SC		 330 if (protocol == ETH_P_IP) {
331 l4proto = ip_hdr(skb)->protocol;
332
333 if (l4proto == IPPROTO_TCP)
334 opcode = TX_TCP_PKT;
335 else if (l4proto == IPPROTO_UDP)
336 opcode = TX_UDP_PKT;
337 } else if (protocol == ETH_P_IPV6) {
338 l4proto = ipv6_hdr(skb)->nexthdr;
339
340 if (l4proto == IPPROTO_TCP)
341 opcode = TX_TCPV6_PKT;
342 else if (l4proto == IPPROTO_UDP)
343 opcode = TX_UDPV6_PKT;
344 }
345 }
346 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
347 first_desc->ip_hdr_offset += skb_network_offset(skb);
348 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
349
350 return 0;
351}
352
d17dd0d9
SC		 353static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
354 struct qlcnic_cmd_buffer *pbuf)
c70001a9
SC		 355{
356 struct qlcnic_skb_frag *nf;
357 struct skb_frag_struct *frag;
358 int i, nr_frags;
359 dma_addr_t map;
360
361 nr_frags = skb_shinfo(skb)->nr_frags;
362 nf = &pbuf->frag_array[0];
363
d17dd0d9
SC		 364 map = pci_map_single(pdev, skb->data, skb_headlen(skb),
365 PCI_DMA_TODEVICE);
c70001a9
SC		 366 if (pci_dma_mapping_error(pdev, map))
367 goto out_err;
368
369 nf->dma = map;
370 nf->length = skb_headlen(skb);
371
372 for (i = 0; i < nr_frags; i++) {
373 frag = &skb_shinfo(skb)->frags[i];
374 nf = &pbuf->frag_array[i+1];
c70001a9
SC		 375 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
376 DMA_TO_DEVICE);
377 if (dma_mapping_error(&pdev->dev, map))
378 goto unwind;
379
380 nf->dma = map;
381 nf->length = skb_frag_size(frag);
382 }
383
384 return 0;
385
386unwind:
387 while (--i >= 0) {
388 nf = &pbuf->frag_array[i+1];
389 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
390 }
391
392 nf = &pbuf->frag_array[0];
393 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
394
395out_err:
396 return -ENOMEM;
397}
398
d17dd0d9
SC		 399static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
400 struct qlcnic_cmd_buffer *pbuf)
c70001a9
SC		 401{
402 struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
d17dd0d9 403 int i, nr_frags = skb_shinfo(skb)->nr_frags;
c70001a9
SC		 404
405 for (i = 0; i < nr_frags; i++) {
406 nf = &pbuf->frag_array[i+1];
407 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
408 }
409
410 nf = &pbuf->frag_array[0];
411 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
412 pbuf->skb = NULL;
413}
414
d17dd0d9 415static inline void qlcnic_clear_cmddesc(u64 *desc)
c70001a9
SC		 416{
417 desc[0] = 0ULL;
418 desc[2] = 0ULL;
419 desc[7] = 0ULL;
420}
421
d17dd0d9 422netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
c70001a9
SC		 423{
424 struct qlcnic_adapter *adapter = netdev_priv(netdev);
425 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
426 struct qlcnic_cmd_buffer *pbuf;
427 struct qlcnic_skb_frag *buffrag;
428 struct cmd_desc_type0 *hwdesc, *first_desc;
429 struct pci_dev *pdev;
430 struct ethhdr *phdr;
d17dd0d9
SC		 431 int i, k, frag_count, delta = 0;
432 u32 producer, num_txd;
c70001a9 433
d17dd0d9 434 num_txd = tx_ring->num_desc;
c70001a9
SC		 435
436 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
437 netif_stop_queue(netdev);
438 return NETDEV_TX_BUSY;
439 }
440
441 if (adapter->flags & QLCNIC_MACSPOOF) {
442 phdr = (struct ethhdr *)skb->data;
443 if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
444 goto drop_packet;
445 }
446
447 frag_count = skb_shinfo(skb)->nr_frags + 1;
448 /* 14 frags supported for normal packet and
449 * 32 frags supported for TSO packet
450 */
451 if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
c70001a9
SC		 452 for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
453 delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
454
455 if (!__pskb_pull_tail(skb, delta))
456 goto drop_packet;
457
458 frag_count = 1 + skb_shinfo(skb)->nr_frags;
459 }
460
461 if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
462 netif_stop_queue(netdev);
d17dd0d9 463 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
c70001a9 464 netif_start_queue(netdev);
d17dd0d9 465 } else {
c70001a9
SC		 466 adapter->stats.xmit_off++;
467 return NETDEV_TX_BUSY;
468 }
469 }
470
471 producer = tx_ring->producer;
472 pbuf = &tx_ring->cmd_buf_arr[producer];
c70001a9 473 pdev = adapter->pdev;
d17dd0d9
SC		 474 first_desc = &tx_ring->desc_head[producer];
475 hwdesc = &tx_ring->desc_head[producer];
c70001a9
SC		 476 qlcnic_clear_cmddesc((u64 *)hwdesc);
477
478 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
479 adapter->stats.tx_dma_map_error++;
480 goto drop_packet;
481 }
482
483 pbuf->skb = skb;
484 pbuf->frag_count = frag_count;
485
486 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
487 qlcnic_set_tx_port(first_desc, adapter->portnum);
488
489 for (i = 0; i < frag_count; i++) {
c70001a9
SC		 490 k = i % 4;
491
492 if ((k == 0) && (i > 0)) {
493 /* move to next desc.*/
494 producer = get_next_index(producer, num_txd);
495 hwdesc = &tx_ring->desc_head[producer];
496 qlcnic_clear_cmddesc((u64 *)hwdesc);
497 tx_ring->cmd_buf_arr[producer].skb = NULL;
498 }
499
500 buffrag = &pbuf->frag_array[i];
c70001a9
SC		 501 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
502 switch (k) {
503 case 0:
504 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
505 break;
506 case 1:
507 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
508 break;
509 case 2:
510 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
511 break;
512 case 3:
513 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
514 break;
515 }
516 }
517
518 tx_ring->producer = get_next_index(producer, num_txd);
519 smp_mb();
520
521 if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb)))
522 goto unwind_buff;
523
524 if (adapter->mac_learn)
4be41e92 525 qlcnic_send_filter(adapter, first_desc, skb);
c70001a9
SC		 526
527 adapter->stats.txbytes += skb->len;
528 adapter->stats.xmitcalled++;
529
530 qlcnic_update_cmd_producer(tx_ring);
531
532 return NETDEV_TX_OK;
533
534unwind_buff:
535 qlcnic_unmap_buffers(pdev, skb, pbuf);
536drop_packet:
537 adapter->stats.txdropped++;
538 dev_kfree_skb_any(skb);
539 return NETDEV_TX_OK;
540}
541
7f966452 542void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
c70001a9
SC		 543{
544 struct net_device *netdev = adapter->netdev;
545
546 if (adapter->ahw->linkup && !linkup) {
547 netdev_info(netdev, "NIC Link is down\n");
548 adapter->ahw->linkup = 0;
549 if (netif_running(netdev)) {
550 netif_carrier_off(netdev);
551 netif_stop_queue(netdev);
552 }
553 } else if (!adapter->ahw->linkup && linkup) {
554 netdev_info(netdev, "NIC Link is up\n");
555 adapter->ahw->linkup = 1;
556 if (netif_running(netdev)) {
557 netif_carrier_on(netdev);
558 netif_wake_queue(netdev);
559 }
560 }
561}
562
d17dd0d9
SC		 563static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
564 struct qlcnic_host_rds_ring *rds_ring,
565 struct qlcnic_rx_buffer *buffer)
c70001a9
SC		 566{
567 struct sk_buff *skb;
568 dma_addr_t dma;
569 struct pci_dev *pdev = adapter->pdev;
570
571 skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
572 if (!skb) {
573 adapter->stats.skb_alloc_failure++;
574 return -ENOMEM;
575 }
576
577 skb_reserve(skb, NET_IP_ALIGN);
4be41e92
SC		 578 dma = pci_map_single(pdev, skb->data,
579 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
c70001a9
SC		 580
581 if (pci_dma_mapping_error(pdev, dma)) {
582 adapter->stats.rx_dma_map_error++;
583 dev_kfree_skb_any(skb);
584 return -ENOMEM;
585 }
586
587 buffer->skb = skb;
588 buffer->dma = dma;
589
590 return 0;
591}
592
593static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
4be41e92
SC		 594 struct qlcnic_host_rds_ring *rds_ring,
595 u8 ring_id)
c70001a9
SC		 596{
597 struct rcv_desc *pdesc;
598 struct qlcnic_rx_buffer *buffer;
599 int count = 0;
4be41e92 600 uint32_t producer, handle;
c70001a9
SC		 601 struct list_head *head;
602
603 if (!spin_trylock(&rds_ring->lock))
604 return;
605
606 producer = rds_ring->producer;
c70001a9 607 head = &rds_ring->free_list;
d17dd0d9 608 while (!list_empty(head)) {
c70001a9
SC		 609 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
610
611 if (!buffer->skb) {
612 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
613 break;
614 }
c70001a9
SC		 615 count++;
616 list_del(&buffer->list);
617
618 /* make a rcv descriptor */
619 pdesc = &rds_ring->desc_head[producer];
4be41e92
SC		 620 handle = qlcnic_get_ref_handle(adapter,
621 buffer->ref_handle, ring_id);
622 pdesc->reference_handle = cpu_to_le16(handle);
c70001a9
SC		 623 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
624 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
c70001a9
SC		 625 producer = get_next_index(producer, rds_ring->num_desc);
626 }
c70001a9
SC		 627 if (count) {
628 rds_ring->producer = producer;
629 writel((producer - 1) & (rds_ring->num_desc - 1),
d17dd0d9 630 rds_ring->crb_rcv_producer);
c70001a9
SC		 631 }
632 spin_unlock(&rds_ring->lock);
633}
634
4be41e92
SC		 635static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
636 struct qlcnic_host_tx_ring *tx_ring,
637 int budget)
c70001a9
SC		 638{
639 u32 sw_consumer, hw_consumer;
d17dd0d9 640 int i, done, count = 0;
c70001a9
SC		 641 struct qlcnic_cmd_buffer *buffer;
642 struct pci_dev *pdev = adapter->pdev;
643 struct net_device *netdev = adapter->netdev;
644 struct qlcnic_skb_frag *frag;
c70001a9
SC		 645
646 if (!spin_trylock(&adapter->tx_clean_lock))
647 return 1;
648
649 sw_consumer = tx_ring->sw_consumer;
650 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
651
652 while (sw_consumer != hw_consumer) {
653 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
654 if (buffer->skb) {
655 frag = &buffer->frag_array[0];
656 pci_unmap_single(pdev, frag->dma, frag->length,
657 PCI_DMA_TODEVICE);
658 frag->dma = 0ULL;
659 for (i = 1; i < buffer->frag_count; i++) {
660 frag++;
661 pci_unmap_page(pdev, frag->dma, frag->length,
662 PCI_DMA_TODEVICE);
663 frag->dma = 0ULL;
664 }
c70001a9
SC		 665 adapter->stats.xmitfinished++;
666 dev_kfree_skb_any(buffer->skb);
667 buffer->skb = NULL;
668 }
669
670 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
4be41e92 671 if (++count >= budget)
c70001a9
SC		 672 break;
673 }
674
675 if (count && netif_running(netdev)) {
676 tx_ring->sw_consumer = sw_consumer;
c70001a9 677 smp_mb();
c70001a9
SC		 678 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
679 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
680 netif_wake_queue(netdev);
681 adapter->stats.xmit_on++;
682 }
683 }
684 adapter->tx_timeo_cnt = 0;
685 }
686 /*
687 * If everything is freed up to consumer then check if the ring is full
688 * If the ring is full then check if more needs to be freed and
689 * schedule the call back again.
690 *
691 * This happens when there are 2 CPUs. One could be freeing and the
692 * other filling it. If the ring is full when we get out of here and
693 * the card has already interrupted the host then the host can miss the
694 * interrupt.
695 *
696 * There is still a possible race condition and the host could miss an
697 * interrupt. The card has to take care of this.
698 */
699 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
700 done = (sw_consumer == hw_consumer);
701 spin_unlock(&adapter->tx_clean_lock);
702
703 return done;
704}
705
706static int qlcnic_poll(struct napi_struct *napi, int budget)
707{
4be41e92 708 int tx_complete, work_done;
d17dd0d9
SC		 709 struct qlcnic_host_sds_ring *sds_ring;
710 struct qlcnic_adapter *adapter;
c70001a9 711
d17dd0d9
SC		 712 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
713 adapter = sds_ring->adapter;
4be41e92
SC		 714 tx_complete = qlcnic_process_cmd_ring(adapter, adapter->tx_ring,
715 budget);
c70001a9 716 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
c70001a9
SC		 717 if ((work_done < budget) && tx_complete) {
718 napi_complete(&sds_ring->napi);
719 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
720 qlcnic_enable_int(sds_ring);
721 }
722
723 return work_done;
724}
725
726static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
727{
d17dd0d9
SC		 728 struct qlcnic_host_sds_ring *sds_ring;
729 struct qlcnic_adapter *adapter;
c70001a9
SC		 730 int work_done;
731
d17dd0d9
SC		 732 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
733 adapter = sds_ring->adapter;
734
c70001a9
SC		 735 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
736
737 if (work_done < budget) {
738 napi_complete(&sds_ring->napi);
739 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
740 qlcnic_enable_int(sds_ring);
741 }
742
743 return work_done;
744}
745
d17dd0d9
SC		 746static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
747 struct qlcnic_fw_msg *msg)
c70001a9
SC		 748{
749 u32 cable_OUI;
d17dd0d9
SC		 750 u16 cable_len, link_speed;
751 u8 link_status, module, duplex, autoneg, lb_status = 0;
c70001a9
SC		 752 struct net_device *netdev = adapter->netdev;
753
79788450 754 adapter->ahw->has_link_events = 1;
c70001a9
SC		 755
756 cable_OUI = msg->body[1] & 0xffffffff;
757 cable_len = (msg->body[1] >> 32) & 0xffff;
758 link_speed = (msg->body[1] >> 48) & 0xffff;
759
760 link_status = msg->body[2] & 0xff;
761 duplex = (msg->body[2] >> 16) & 0xff;
762 autoneg = (msg->body[2] >> 24) & 0xff;
763 lb_status = (msg->body[2] >> 32) & 0x3;
764
765 module = (msg->body[2] >> 8) & 0xff;
766 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
d17dd0d9
SC		 767 dev_info(&netdev->dev,
768 "unsupported cable: OUI 0x%x, length %d\n",
769 cable_OUI, cable_len);
c70001a9
SC		 770 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
771 dev_info(&netdev->dev, "unsupported cable length %d\n",
d17dd0d9 772 cable_len);
c70001a9
SC		 773
774 if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
775 lb_status == QLCNIC_ELB_MODE))
776 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
777
778 qlcnic_advert_link_change(adapter, link_status);
779
780 if (duplex == LINKEVENT_FULL_DUPLEX)
79788450 781 adapter->ahw->link_duplex = DUPLEX_FULL;
c70001a9 782 else
79788450 783 adapter->ahw->link_duplex = DUPLEX_HALF;
c70001a9 784
79788450
SC		 785 adapter->ahw->module_type = module;
786 adapter->ahw->link_autoneg = autoneg;
c70001a9
SC		 787
788 if (link_status) {
79788450 789 adapter->ahw->link_speed = link_speed;
c70001a9 790 } else {
79788450
SC		 791 adapter->ahw->link_speed = SPEED_UNKNOWN;
792 adapter->ahw->link_duplex = DUPLEX_UNKNOWN;
c70001a9
SC		 793 }
794}
795
d17dd0d9
SC		 796static void qlcnic_handle_fw_message(int desc_cnt, int index,
797 struct qlcnic_host_sds_ring *sds_ring)
c70001a9
SC		 798{
799 struct qlcnic_fw_msg msg;
800 struct status_desc *desc;
801 struct qlcnic_adapter *adapter;
802 struct device *dev;
803 int i = 0, opcode, ret;
804
805 while (desc_cnt > 0 && i < 8) {
806 desc = &sds_ring->desc_head[index];
807 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
808 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
809
810 index = get_next_index(index, sds_ring->num_desc);
811 desc_cnt--;
812 }
813
814 adapter = sds_ring->adapter;
815 dev = &adapter->pdev->dev;
816 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
817
818 switch (opcode) {
819 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
820 qlcnic_handle_linkevent(adapter, &msg);
821 break;
822 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
823 ret = (u32)(msg.body[1]);
824 switch (ret) {
825 case 0:
826 adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
827 break;
828 case 1:
829 dev_info(dev, "loopback already in progress\n");
79788450 830 adapter->ahw->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
c70001a9
SC		 831 break;
832 case 2:
833 dev_info(dev, "loopback cable is not connected\n");
79788450 834 adapter->ahw->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
c70001a9
SC		 835 break;
836 default:
d17dd0d9
SC		 837 dev_info(dev,
838 "loopback configure request failed, err %x\n",
839 ret);
79788450 840 adapter->ahw->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
c70001a9
SC		 841 break;
842 }
843 break;
844 default:
845 break;
846 }
847}
848
4be41e92
SC		 849struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
850 struct qlcnic_host_rds_ring *ring,
851 u16 index, u16 cksum)
c70001a9
SC		 852{
853 struct qlcnic_rx_buffer *buffer;
854 struct sk_buff *skb;
855
4be41e92 856 buffer = &ring->rx_buf_arr[index];
c70001a9
SC		 857 if (unlikely(buffer->skb == NULL)) {
858 WARN_ON(1);
859 return NULL;
860 }
861
4be41e92 862 pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size,
d17dd0d9 863 PCI_DMA_FROMDEVICE);
c70001a9
SC		 864
865 skb = buffer->skb;
c70001a9 866 if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
d17dd0d9 867 (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
c70001a9
SC		 868 adapter->stats.csummed++;
869 skb->ip_summed = CHECKSUM_UNNECESSARY;
870 } else {
871 skb_checksum_none_assert(skb);
872 }
873
4be41e92 874
c70001a9
SC		 875 buffer->skb = NULL;
876
877 return skb;
878}
879
d17dd0d9
SC		 880static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
881 struct sk_buff *skb, u16 *vlan_tag)
c70001a9
SC		 882{
883 struct ethhdr *eth_hdr;
884
885 if (!__vlan_get_tag(skb, vlan_tag)) {
d17dd0d9 886 eth_hdr = (struct ethhdr *)skb->data;
c70001a9
SC		 887 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
888 skb_pull(skb, VLAN_HLEN);
889 }
890 if (!adapter->pvid)
891 return 0;
892
893 if (*vlan_tag == adapter->pvid) {
894 /* Outer vlan tag. Packet should follow non-vlan path */
895 *vlan_tag = 0xffff;
896 return 0;
897 }
898 if (adapter->flags & QLCNIC_TAGGING_ENABLED)
899 return 0;
900
901 return -EINVAL;
902}
903
904static struct qlcnic_rx_buffer *
905qlcnic_process_rcv(struct qlcnic_adapter *adapter,
d17dd0d9
SC		 906 struct qlcnic_host_sds_ring *sds_ring, int ring,
907 u64 sts_data0)
c70001a9
SC		 908{
909 struct net_device *netdev = adapter->netdev;
910 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
911 struct qlcnic_rx_buffer *buffer;
912 struct sk_buff *skb;
913 struct qlcnic_host_rds_ring *rds_ring;
914 int index, length, cksum, pkt_offset;
915 u16 vid = 0xffff;
916
917 if (unlikely(ring >= adapter->max_rds_rings))
918 return NULL;
919
920 rds_ring = &recv_ctx->rds_rings[ring];
921
922 index = qlcnic_get_sts_refhandle(sts_data0);
923 if (unlikely(index >= rds_ring->num_desc))
924 return NULL;
925
926 buffer = &rds_ring->rx_buf_arr[index];
c70001a9
SC		 927 length = qlcnic_get_sts_totallength(sts_data0);
928 cksum = qlcnic_get_sts_status(sts_data0);
929 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
930
931 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
932 if (!skb)
933 return buffer;
934
935 if (length > rds_ring->skb_size)
936 skb_put(skb, rds_ring->skb_size);
937 else
938 skb_put(skb, length);
939
940 if (pkt_offset)
941 skb_pull(skb, pkt_offset);
942
943 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
944 adapter->stats.rxdropped++;
945 dev_kfree_skb(skb);
946 return buffer;
947 }
948
949 skb->protocol = eth_type_trans(skb, netdev);
950
951 if (vid != 0xffff)
952 __vlan_hwaccel_put_tag(skb, vid);
953
954 napi_gro_receive(&sds_ring->napi, skb);
955
956 adapter->stats.rx_pkts++;
957 adapter->stats.rxbytes += length;
958
959 return buffer;
960}
961
962#define QLC_TCP_HDR_SIZE 20
963#define QLC_TCP_TS_OPTION_SIZE 12
964#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
965
966static struct qlcnic_rx_buffer *
967qlcnic_process_lro(struct qlcnic_adapter *adapter,
d17dd0d9 968 int ring, u64 sts_data0, u64 sts_data1)
c70001a9
SC		 969{
970 struct net_device *netdev = adapter->netdev;
971 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
972 struct qlcnic_rx_buffer *buffer;
973 struct sk_buff *skb;
974 struct qlcnic_host_rds_ring *rds_ring;
975 struct iphdr *iph;
976 struct tcphdr *th;
977 bool push, timestamp;
d17dd0d9
SC		 978 int index, l2_hdr_offset, l4_hdr_offset;
979 u16 lro_length, length, data_offset, vid = 0xffff;
c70001a9 980 u32 seq_number;
c70001a9
SC		 981
982 if (unlikely(ring > adapter->max_rds_rings))
983 return NULL;
984
985 rds_ring = &recv_ctx->rds_rings[ring];
986
987 index = qlcnic_get_lro_sts_refhandle(sts_data0);
988 if (unlikely(index > rds_ring->num_desc))
989 return NULL;
990
991 buffer = &rds_ring->rx_buf_arr[index];
992
993 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
994 lro_length = qlcnic_get_lro_sts_length(sts_data0);
995 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
996 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
997 push = qlcnic_get_lro_sts_push_flag(sts_data0);
998 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
999
1000 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1001 if (!skb)
1002 return buffer;
1003
1004 if (timestamp)
1005 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1006 else
1007 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1008
1009 skb_put(skb, lro_length + data_offset);
c70001a9
SC		 1010 skb_pull(skb, l2_hdr_offset);
1011
1012 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1013 adapter->stats.rxdropped++;
1014 dev_kfree_skb(skb);
1015 return buffer;
1016 }
1017
1018 skb->protocol = eth_type_trans(skb, netdev);
c70001a9
SC		 1019 iph = (struct iphdr *)skb->data;
1020 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
c70001a9
SC		 1021 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1022 iph->tot_len = htons(length);
1023 iph->check = 0;
1024 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1025 th->psh = push;
1026 th->seq = htonl(seq_number);
c70001a9
SC		 1027 length = skb->len;
1028
1029 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP)
1030 skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
1031
1032 if (vid != 0xffff)
1033 __vlan_hwaccel_put_tag(skb, vid);
1034 netif_receive_skb(skb);
1035
1036 adapter->stats.lro_pkts++;
1037 adapter->stats.lrobytes += length;
1038
1039 return buffer;
1040}
1041
d17dd0d9 1042int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
c70001a9 1043{
d17dd0d9 1044 struct qlcnic_host_rds_ring *rds_ring;
c70001a9
SC		 1045 struct qlcnic_adapter *adapter = sds_ring->adapter;
1046 struct list_head *cur;
1047 struct status_desc *desc;
1048 struct qlcnic_rx_buffer *rxbuf;
4be41e92 1049 int opcode, desc_cnt, count = 0;
c70001a9 1050 u64 sts_data0, sts_data1;
4be41e92 1051 u8 ring;
c70001a9
SC		 1052 u32 consumer = sds_ring->consumer;
1053
1054 while (count < max) {
1055 desc = &sds_ring->desc_head[consumer];
1056 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1057
1058 if (!(sts_data0 & STATUS_OWNER_HOST))
1059 break;
1060
1061 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1062 opcode = qlcnic_get_sts_opcode(sts_data0);
c70001a9
SC		 1063 switch (opcode) {
1064 case QLCNIC_RXPKT_DESC:
1065 case QLCNIC_OLD_RXPKT_DESC:
1066 case QLCNIC_SYN_OFFLOAD:
1067 ring = qlcnic_get_sts_type(sts_data0);
d17dd0d9
SC		 1068 rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring,
1069 sts_data0);
c70001a9
SC		 1070 break;
1071 case QLCNIC_LRO_DESC:
1072 ring = qlcnic_get_lro_sts_type(sts_data0);
1073 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1074 rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1075 sts_data1);
1076 break;
1077 case QLCNIC_RESPONSE_DESC:
1078 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1079 default:
1080 goto skip;
1081 }
c70001a9
SC		 1082 WARN_ON(desc_cnt > 1);
1083
1084 if (likely(rxbuf))
1085 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1086 else
1087 adapter->stats.null_rxbuf++;
c70001a9
SC		 1088skip:
1089 for (; desc_cnt > 0; desc_cnt--) {
1090 desc = &sds_ring->desc_head[consumer];
4be41e92 1091 desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW;
c70001a9
SC		 1092 consumer = get_next_index(consumer, sds_ring->num_desc);
1093 }
1094 count++;
1095 }
1096
1097 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
d17dd0d9 1098 rds_ring = &adapter->recv_ctx->rds_rings[ring];
c70001a9
SC		 1099 if (!list_empty(&sds_ring->free_list[ring])) {
1100 list_for_each(cur, &sds_ring->free_list[ring]) {
d17dd0d9
SC		 1101 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1102 list);
c70001a9
SC		 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],
d17dd0d9 1107 &rds_ring->free_list);
c70001a9
SC		 1108 spin_unlock(&rds_ring->lock);
1109 }
1110
4be41e92 1111 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
c70001a9
SC		 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
d17dd0d9 1122void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
4be41e92 1123 struct qlcnic_host_rds_ring *rds_ring, u8 ring_id)
c70001a9
SC		 1124{
1125 struct rcv_desc *pdesc;
1126 struct qlcnic_rx_buffer *buffer;
1127 int count = 0;
4be41e92 1128 u32 producer, handle;
c70001a9
SC		 1129 struct list_head *head;
1130
1131 producer = rds_ring->producer;
c70001a9 1132 head = &rds_ring->free_list;
d17dd0d9 1133
c70001a9
SC		 1134 while (!list_empty(head)) {
1135
1136 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1137
1138 if (!buffer->skb) {
1139 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1140 break;
1141 }
1142
1143 count++;
1144 list_del(&buffer->list);
1145
1146 /* make a rcv descriptor */
1147 pdesc = &rds_ring->desc_head[producer];
1148 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
4be41e92
SC		 1149 handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle,
1150 ring_id);
1151 pdesc->reference_handle = cpu_to_le16(handle);
c70001a9 1152 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
c70001a9
SC		 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),
d17dd0d9 1159 rds_ring->crb_rcv_producer);
c70001a9
SC		 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
d17dd0d9 1168 pr_info(KERN_INFO "\n");
c70001a9
SC		 1169 for (i = 0; i < skb->len; i++) {
1170 QLCDB(adapter, DRV, "%02x ", data[i]);
1171 if ((i & 0x0f) == 8)
d17dd0d9 1172 pr_info(KERN_INFO "\n");
c70001a9
SC		 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))
79788450 1210 adapter->ahw->diag_cnt++;
c70001a9
SC		 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
7e2cf4fe 1221void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
c70001a9
SC		 1222{
1223 struct qlcnic_adapter *adapter = sds_ring->adapter;
1224 struct status_desc *desc;
1225 u64 sts_data0;
1226 int ring, opcode, desc_cnt;
1227
1228 u32 consumer = sds_ring->consumer;
1229
1230 desc = &sds_ring->desc_head[consumer];
1231 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1232
1233 if (!(sts_data0 & STATUS_OWNER_HOST))
1234 return;
1235
1236 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1237 opcode = qlcnic_get_sts_opcode(sts_data0);
1238 switch (opcode) {
1239 case QLCNIC_RESPONSE_DESC:
1240 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1241 break;
1242 default:
1243 ring = qlcnic_get_sts_type(sts_data0);
1244 qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1245 break;
1246 }
1247
1248 for (; desc_cnt > 0; desc_cnt--) {
1249 desc = &sds_ring->desc_head[consumer];
1250 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1251 consumer = get_next_index(consumer, sds_ring->num_desc);
1252 }
1253
1254 sds_ring->consumer = consumer;
1255 writel(consumer, sds_ring->crb_sts_consumer);
1256}
1257
7e2cf4fe
SC		 1258int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
1259 struct net_device *netdev)
c70001a9 1260{
d17dd0d9 1261 int ring, max_sds_rings;
c70001a9
SC		 1262 struct qlcnic_host_sds_ring *sds_ring;
1263 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1264
1265 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
1266 return -ENOMEM;
1267
d17dd0d9
SC		 1268 max_sds_rings = adapter->max_sds_rings;
1269
c70001a9
SC		 1270 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1271 sds_ring = &recv_ctx->sds_rings[ring];
4be41e92 1272 if (ring == adapter->max_sds_rings - 1)
c70001a9 1273 netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
d17dd0d9 1274 QLCNIC_NETDEV_WEIGHT / max_sds_rings);
c70001a9 1275 else
d17dd0d9
SC		 1276 netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll,
1277 QLCNIC_NETDEV_WEIGHT*2);
c70001a9
SC		 1278 }
1279
4be41e92
SC		 1280 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
1281 qlcnic_free_sds_rings(recv_ctx);
1282 return -ENOMEM;
1283 }
1284
c70001a9
SC		 1285 return 0;
1286}
1287
4be41e92 1288void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter)
c70001a9
SC		 1289{
1290 int ring;
1291 struct qlcnic_host_sds_ring *sds_ring;
1292 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1293
1294 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1295 sds_ring = &recv_ctx->sds_rings[ring];
1296 netif_napi_del(&sds_ring->napi);
1297 }
1298
1299 qlcnic_free_sds_rings(adapter->recv_ctx);
4be41e92 1300 qlcnic_free_tx_rings(adapter);
c70001a9
SC		 1301}
1302
7e2cf4fe 1303void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter)
c70001a9
SC		 1304{
1305 int ring;
1306 struct qlcnic_host_sds_ring *sds_ring;
1307 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1308
1309 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1310 return;
1311
1312 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1313 sds_ring = &recv_ctx->sds_rings[ring];
1314 napi_enable(&sds_ring->napi);
1315 qlcnic_enable_int(sds_ring);
1316 }
1317}
1318
7e2cf4fe 1319void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
c70001a9
SC		 1320{
1321 int ring;
1322 struct qlcnic_host_sds_ring *sds_ring;
1323 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1324
1325 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1326 return;
1327
1328 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1329 sds_ring = &recv_ctx->sds_rings[ring];
1330 qlcnic_disable_int(sds_ring);
1331 napi_synchronize(&sds_ring->napi);
1332 napi_disable(&sds_ring->napi);
1333 }
1334}
4be41e92
SC		 1335
1336static struct qlcnic_rx_buffer *
1337qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
1338 struct qlcnic_host_sds_ring *sds_ring,
1339 u8 ring, u64 sts_data[])
1340{
1341 struct net_device *netdev = adapter->netdev;
1342 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1343 struct qlcnic_rx_buffer *buffer;
1344 struct sk_buff *skb;
1345 struct qlcnic_host_rds_ring *rds_ring;
1346 int index, length, cksum;
1347 u16 vid = 0xffff;
1348
1349 if (unlikely(ring >= adapter->max_rds_rings))
1350 return NULL;
1351
1352 rds_ring = &recv_ctx->rds_rings[ring];
1353
1354 index = qlcnic_83xx_hndl(sts_data[0]);
1355 if (unlikely(index >= rds_ring->num_desc))
1356 return NULL;
1357
1358 buffer = &rds_ring->rx_buf_arr[index];
1359 length = qlcnic_83xx_pktln(sts_data[0]);
1360 cksum = qlcnic_83xx_csum_status(sts_data[1]);
1361 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1362 if (!skb)
1363 return buffer;
1364
1365 if (length > rds_ring->skb_size)
1366 skb_put(skb, rds_ring->skb_size);
1367 else
1368 skb_put(skb, length);
1369
1370 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1371 adapter->stats.rxdropped++;
1372 dev_kfree_skb(skb);
1373 return buffer;
1374 }
1375
1376 skb->protocol = eth_type_trans(skb, netdev);
1377
1378 if (vid != 0xffff)
1379 __vlan_hwaccel_put_tag(skb, vid);
1380
1381 napi_gro_receive(&sds_ring->napi, skb);
1382
1383 adapter->stats.rx_pkts++;
1384 adapter->stats.rxbytes += length;
1385
1386 return buffer;
1387}
1388
1389static struct qlcnic_rx_buffer *
1390qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
1391 u8 ring, u64 sts_data[])
1392{
1393 struct net_device *netdev = adapter->netdev;
1394 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1395 struct qlcnic_rx_buffer *buffer;
1396 struct sk_buff *skb;
1397 struct qlcnic_host_rds_ring *rds_ring;
1398 struct iphdr *iph;
1399 struct ipv6hdr *ipv6h;
1400 struct tcphdr *th;
1401 bool push;
1402 int l2_hdr_offset, l4_hdr_offset;
1403 int index;
1404 u16 lro_length, length, data_offset;
1405 u16 vid = 0xffff;
1406
1407 if (unlikely(ring > adapter->max_rds_rings))
1408 return NULL;
1409
1410 rds_ring = &recv_ctx->rds_rings[ring];
1411
1412 index = qlcnic_83xx_hndl(sts_data[0]);
1413 if (unlikely(index > rds_ring->num_desc))
1414 return NULL;
1415
1416 buffer = &rds_ring->rx_buf_arr[index];
1417
1418 lro_length = qlcnic_83xx_lro_pktln(sts_data[0]);
1419 l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]);
1420 l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]);
1421 push = qlcnic_83xx_is_psh_bit(sts_data[1]);
1422
1423 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1424 if (!skb)
1425 return buffer;
1426 if (qlcnic_83xx_is_tstamp(sts_data[1]))
1427 data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE;
1428 else
1429 data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE;
1430
1431 skb_put(skb, lro_length + data_offset);
1432 skb_pull(skb, l2_hdr_offset);
1433
1434 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1435 adapter->stats.rxdropped++;
1436 dev_kfree_skb(skb);
1437 return buffer;
1438 }
1439
1440 skb->protocol = eth_type_trans(skb, netdev);
1441 if (ntohs(skb->protocol) == ETH_P_IPV6) {
1442 ipv6h = (struct ipv6hdr *)skb->data;
1443 th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1444
1445 length = (th->doff << 2) + lro_length;
1446 ipv6h->payload_len = htons(length);
1447 } else {
1448 iph = (struct iphdr *)skb->data;
1449 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1450 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1451 iph->tot_len = htons(length);
1452 iph->check = 0;
1453 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1454 }
1455
1456 th->psh = push;
1457 length = skb->len;
1458
1459 if (vid != 0xffff)
1460 __vlan_hwaccel_put_tag(skb, vid);
1461
1462 netif_receive_skb(skb);
1463
1464 adapter->stats.lro_pkts++;
1465 adapter->stats.lrobytes += length;
1466 return buffer;
1467}
1468
1469static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
1470 int max)
1471{
1472 struct qlcnic_host_rds_ring *rds_ring;
1473 struct qlcnic_adapter *adapter = sds_ring->adapter;
1474 struct list_head *cur;
1475 struct status_desc *desc;
1476 struct qlcnic_rx_buffer *rxbuf = NULL;
1477 u8 ring;
1478 u64 sts_data[2];
1479 int count = 0, opcode;
1480 u32 consumer = sds_ring->consumer;
1481
1482 while (count < max) {
1483 desc = &sds_ring->desc_head[consumer];
1484 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
1485 opcode = qlcnic_83xx_opcode(sts_data[1]);
1486 if (!opcode)
1487 break;
1488 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
1489 ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
1490
1491 switch (opcode) {
1492 case QLC_83XX_REG_DESC:
1493 rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring,
1494 ring, sts_data);
1495 break;
1496 case QLC_83XX_LRO_DESC:
1497 rxbuf = qlcnic_83xx_process_lro(adapter, ring,
1498 sts_data);
1499 break;
1500 default:
1501 dev_info(&adapter->pdev->dev,
1502 "Unkonwn opcode: 0x%x\n", opcode);
1503 goto skip;
1504 }
1505
1506 if (likely(rxbuf))
1507 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1508 else
1509 adapter->stats.null_rxbuf++;
1510skip:
1511 desc = &sds_ring->desc_head[consumer];
1512 /* Reset the descriptor */
1513 desc->status_desc_data[1] = 0;
1514 consumer = get_next_index(consumer, sds_ring->num_desc);
1515 count++;
1516 }
1517 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1518 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1519 if (!list_empty(&sds_ring->free_list[ring])) {
1520 list_for_each(cur, &sds_ring->free_list[ring]) {
1521 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1522 list);
1523 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1524 }
1525 spin_lock(&rds_ring->lock);
1526 list_splice_tail_init(&sds_ring->free_list[ring],
1527 &rds_ring->free_list);
1528 spin_unlock(&rds_ring->lock);
1529 }
1530 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1531 }
1532 if (count) {
1533 sds_ring->consumer = consumer;
1534 writel(consumer, sds_ring->crb_sts_consumer);
1535 }
1536 return count;
1537}
1538
1539static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
1540{
1541 int tx_complete;
1542 int work_done;
1543 struct qlcnic_host_sds_ring *sds_ring;
1544 struct qlcnic_adapter *adapter;
1545 struct qlcnic_host_tx_ring *tx_ring;
1546
1547 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1548 adapter = sds_ring->adapter;
1549 /* tx ring count = 1 */
1550 tx_ring = adapter->tx_ring;
1551
1552 if (!(adapter->flags & QLCNIC_MSIX_ENABLED))
1553 qlcnic_83xx_process_aen(adapter);
1554
1555 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1556 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1557 if ((work_done < budget) && tx_complete) {
1558 napi_complete(&sds_ring->napi);
1559 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1560 qlcnic_83xx_enable_intr(adapter, sds_ring);
1561 }
1562
1563 return work_done;
1564}
1565
1566static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget)
1567{
1568 int work_done;
1569 struct qlcnic_host_tx_ring *tx_ring;
1570 struct qlcnic_adapter *adapter;
1571
1572 budget = QLCNIC_TX_POLL_BUDGET;
1573 tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
1574 adapter = tx_ring->adapter;
1575 work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1576 if (work_done) {
1577 napi_complete(&tx_ring->napi);
1578 if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
1579 qlcnic_83xx_enable_tx_intr(adapter, tx_ring);
1580 }
1581
1582 return work_done;
1583}
1584
1585static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget)
1586{
1587 int work_done;
1588 struct qlcnic_host_sds_ring *sds_ring;
1589 struct qlcnic_adapter *adapter;
1590
1591 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1592 adapter = sds_ring->adapter;
1593 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1594 if (work_done < budget) {
1595 napi_complete(&sds_ring->napi);
1596 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1597 qlcnic_83xx_enable_intr(adapter, sds_ring);
1598 }
1599
1600 return work_done;
1601}
1602
1603void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
1604{
1605 int ring;
1606 struct qlcnic_host_sds_ring *sds_ring;
1607 struct qlcnic_host_tx_ring *tx_ring;
1608 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1609
1610 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1611 return;
1612
1613 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1614 sds_ring = &recv_ctx->sds_rings[ring];
1615 napi_enable(&sds_ring->napi);
1616 qlcnic_83xx_enable_intr(adapter, sds_ring);
1617 }
1618
1619 if (adapter->flags & QLCNIC_MSIX_ENABLED) {
1620 for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
1621 tx_ring = &adapter->tx_ring[ring];
1622 napi_enable(&tx_ring->napi);
1623 qlcnic_83xx_enable_tx_intr(adapter, tx_ring);
1624 }
1625 }
1626}
1627
1628void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
1629{
1630 int ring;
1631 struct qlcnic_host_sds_ring *sds_ring;
1632 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1633 struct qlcnic_host_tx_ring *tx_ring;
1634
1635 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1636 return;
1637
1638 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1639 sds_ring = &recv_ctx->sds_rings[ring];
1640 writel(1, sds_ring->crb_intr_mask);
1641 napi_synchronize(&sds_ring->napi);
1642 napi_disable(&sds_ring->napi);
1643 }
1644
1645 if (adapter->flags & QLCNIC_MSIX_ENABLED) {
1646 for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
1647 tx_ring = &adapter->tx_ring[ring];
1648 qlcnic_83xx_disable_tx_intr(adapter, tx_ring);
1649 napi_synchronize(&tx_ring->napi);
1650 napi_disable(&tx_ring->napi);
1651 }
1652 }
1653}
1654
1655int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter,
1656 struct net_device *netdev)
1657{
1658 int ring, max_sds_rings;
1659 struct qlcnic_host_sds_ring *sds_ring;
1660 struct qlcnic_host_tx_ring *tx_ring;
1661 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1662
1663 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
1664 return -ENOMEM;
1665
1666 max_sds_rings = adapter->max_sds_rings;
1667 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1668 sds_ring = &recv_ctx->sds_rings[ring];
1669 if (adapter->flags & QLCNIC_MSIX_ENABLED)
1670 netif_napi_add(netdev, &sds_ring->napi,
1671 qlcnic_83xx_rx_poll,
1672 QLCNIC_NETDEV_WEIGHT * 2);
1673 else
1674 netif_napi_add(netdev, &sds_ring->napi,
1675 qlcnic_83xx_poll,
1676 QLCNIC_NETDEV_WEIGHT / max_sds_rings);
1677 }
1678
1679 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
1680 qlcnic_free_sds_rings(recv_ctx);
1681 return -ENOMEM;
1682 }
1683
1684 if (adapter->flags & QLCNIC_MSIX_ENABLED) {
1685 for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
1686 tx_ring = &adapter->tx_ring[ring];
1687 netif_napi_add(netdev, &tx_ring->napi,
1688 qlcnic_83xx_msix_tx_poll,
1689 QLCNIC_NETDEV_WEIGHT);
1690 }
1691 }
1692
1693 return 0;
1694}
1695
1696void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
1697{
1698 int ring;
1699 struct qlcnic_host_sds_ring *sds_ring;
1700 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1701 struct qlcnic_host_tx_ring *tx_ring;
1702
1703 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1704 sds_ring = &recv_ctx->sds_rings[ring];
1705 netif_napi_del(&sds_ring->napi);
1706 }
1707
1708 qlcnic_free_sds_rings(adapter->recv_ctx);
1709
1710 if ((adapter->flags & QLCNIC_MSIX_ENABLED)) {
1711 for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
1712 tx_ring = &adapter->tx_ring[ring];
1713 netif_napi_del(&tx_ring->napi);
1714 }
1715 }
1716
1717 qlcnic_free_tx_rings(adapter);
1718}
1719
1720void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
1721 int ring, u64 sts_data[])
1722{
1723 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1724 struct sk_buff *skb;
1725 struct qlcnic_host_rds_ring *rds_ring;
1726 int index, length;
1727
1728 if (unlikely(ring >= adapter->max_rds_rings))
1729 return;
1730
1731 rds_ring = &recv_ctx->rds_rings[ring];
1732 index = qlcnic_83xx_hndl(sts_data[0]);
1733 if (unlikely(index >= rds_ring->num_desc))
1734 return;
1735
1736 length = qlcnic_83xx_pktln(sts_data[0]);
1737
1738 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1739 if (!skb)
1740 return;
1741
1742 if (length > rds_ring->skb_size)
1743 skb_put(skb, rds_ring->skb_size);
1744 else
1745 skb_put(skb, length);
1746
1747 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1748 adapter->ahw->diag_cnt++;
1749 else
1750 dump_skb(skb, adapter);
1751
1752 dev_kfree_skb_any(skb);
1753 return;
1754}
1755
1756void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1757{
1758 struct qlcnic_adapter *adapter = sds_ring->adapter;
1759 struct status_desc *desc;
1760 u64 sts_data[2];
1761 int ring, opcode;
1762 u32 consumer = sds_ring->consumer;
1763
1764 desc = &sds_ring->desc_head[consumer];
1765 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
1766 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
1767 opcode = qlcnic_83xx_opcode(sts_data[1]);
1768 if (!opcode)
1769 return;
1770
1771 ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0]));
1772 qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data);
1773 desc = &sds_ring->desc_head[consumer];
1774 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1775 consumer = get_next_index(consumer, sds_ring->num_desc);
1776 sds_ring->consumer = consumer;
1777 writel(consumer, sds_ring->crb_sts_consumer);
1778}
Linux 6.x block layer and io_uring tree(s)