2 * QLogic qlcnic NIC Driver
3 * Copyright (c) 2009-2013 QLogic Corporation
5 * See LICENSE.qlcnic for copyright and licensing details.
8 #include <linux/netdevice.h>
9 #include <linux/if_vlan.h>
11 #include <linux/ipv6.h>
12 #include <net/checksum.h>
16 #define QLCNIC_TX_ETHER_PKT 0x01
17 #define QLCNIC_TX_TCP_PKT 0x02
18 #define QLCNIC_TX_UDP_PKT 0x03
19 #define QLCNIC_TX_IP_PKT 0x04
20 #define QLCNIC_TX_TCP_LSO 0x05
21 #define QLCNIC_TX_TCP_LSO6 0x06
22 #define QLCNIC_TX_ENCAP_PKT 0x07
23 #define QLCNIC_TX_ENCAP_LSO 0x08
24 #define QLCNIC_TX_TCPV6_PKT 0x0b
25 #define QLCNIC_TX_UDPV6_PKT 0x0c
27 #define QLCNIC_FLAGS_VLAN_TAGGED 0x10
28 #define QLCNIC_FLAGS_VLAN_OOB 0x40
30 #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
31 (cmd_desc)->vlan_TCI = cpu_to_le16(v);
32 #define qlcnic_set_cmd_desc_port(cmd_desc, var) \
33 ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
34 #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
35 ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
37 #define qlcnic_set_tx_port(_desc, _port) \
38 ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
40 #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
41 ((_desc)->flags_opcode |= \
42 cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
44 #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
45 ((_desc)->nfrags__length = \
46 cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
48 /* owner bits of status_desc */
49 #define STATUS_OWNER_HOST (0x1ULL << 56)
50 #define STATUS_OWNER_PHANTOM (0x2ULL << 56)
53 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
54 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
55 53-55 desc_cnt, 56-57 owner, 58-63 opcode
57 #define qlcnic_get_sts_port(sts_data) \
59 #define qlcnic_get_sts_status(sts_data) \
60 (((sts_data) >> 4) & 0x0F)
61 #define qlcnic_get_sts_type(sts_data) \
62 (((sts_data) >> 8) & 0x0F)
63 #define qlcnic_get_sts_totallength(sts_data) \
64 (((sts_data) >> 12) & 0xFFFF)
65 #define qlcnic_get_sts_refhandle(sts_data) \
66 (((sts_data) >> 28) & 0xFFFF)
67 #define qlcnic_get_sts_prot(sts_data) \
68 (((sts_data) >> 44) & 0x0F)
69 #define qlcnic_get_sts_pkt_offset(sts_data) \
70 (((sts_data) >> 48) & 0x1F)
71 #define qlcnic_get_sts_desc_cnt(sts_data) \
72 (((sts_data) >> 53) & 0x7)
73 #define qlcnic_get_sts_opcode(sts_data) \
74 (((sts_data) >> 58) & 0x03F)
76 #define qlcnic_get_lro_sts_refhandle(sts_data) \
77 ((sts_data) & 0x07FFF)
78 #define qlcnic_get_lro_sts_length(sts_data) \
79 (((sts_data) >> 16) & 0x0FFFF)
80 #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
81 (((sts_data) >> 32) & 0x0FF)
82 #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
83 (((sts_data) >> 40) & 0x0FF)
84 #define qlcnic_get_lro_sts_timestamp(sts_data) \
85 (((sts_data) >> 48) & 0x1)
86 #define qlcnic_get_lro_sts_type(sts_data) \
87 (((sts_data) >> 49) & 0x7)
88 #define qlcnic_get_lro_sts_push_flag(sts_data) \
89 (((sts_data) >> 52) & 0x1)
90 #define qlcnic_get_lro_sts_seq_number(sts_data) \
91 ((sts_data) & 0x0FFFFFFFF)
92 #define qlcnic_get_lro_sts_mss(sts_data1) \
93 ((sts_data1 >> 32) & 0x0FFFF)
95 #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff)
97 /* opcode field in status_desc */
98 #define QLCNIC_SYN_OFFLOAD 0x03
99 #define QLCNIC_RXPKT_DESC 0x04
100 #define QLCNIC_OLD_RXPKT_DESC 0x3f
101 #define QLCNIC_RESPONSE_DESC 0x05
102 #define QLCNIC_LRO_DESC 0x12
104 #define QLCNIC_TX_POLL_BUDGET 128
105 #define QLCNIC_TCP_HDR_SIZE 20
106 #define QLCNIC_TCP_TS_OPTION_SIZE 12
107 #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63)
108 #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM)
110 #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE)
112 /* for status field in status_desc */
113 #define STATUS_CKSUM_LOOP 0
114 #define STATUS_CKSUM_OK 2
116 #define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF)
117 #define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF)
118 #define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7)
119 #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF)
120 #define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF)
121 #define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF)
122 #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF)
123 #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF)
124 #define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7)
125 #define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1)
126 #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1)
127 #define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1)
128 #define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1)
130 static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
133 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *,
134 struct qlcnic_host_rds_ring *,
137 static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan)
139 return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff));
142 static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter,
143 u16 handle, u8 ring_id)
145 if (qlcnic_83xx_check(adapter))
146 return handle | (ring_id << 15);
151 static inline int qlcnic_82xx_is_lb_pkt(u64 sts_data)
153 return (qlcnic_get_sts_status(sts_data) == STATUS_CKSUM_LOOP) ? 1 : 0;
156 static void qlcnic_delete_rx_list_mac(struct qlcnic_adapter *adapter,
157 struct qlcnic_filter *fil,
158 void *addr, u16 vlan_id)
163 op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
164 ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op);
168 op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL;
169 ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op);
171 hlist_del(&fil->fnode);
172 adapter->rx_fhash.fnum--;
176 static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head,
177 void *addr, u16 vlan_id)
179 struct qlcnic_filter *tmp_fil = NULL;
180 struct hlist_node *n;
182 hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
183 if (ether_addr_equal(tmp_fil->faddr, addr) &&
184 tmp_fil->vlan_id == vlan_id)
191 static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter,
192 struct sk_buff *skb, int loopback_pkt, u16 vlan_id)
194 struct ethhdr *phdr = (struct ethhdr *)(skb->data);
195 struct qlcnic_filter *fil, *tmp_fil;
196 struct hlist_head *head;
202 if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff))
205 memcpy(&src_addr, phdr->h_source, ETH_ALEN);
206 hindex = qlcnic_mac_hash(src_addr, vlan_id) &
207 (adapter->fhash.fbucket_size - 1);
210 if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax)
213 head = &(adapter->rx_fhash.fhead[hindex]);
215 tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
217 time = tmp_fil->ftime;
218 if (time_after(jiffies, QLCNIC_READD_AGE * HZ + time))
219 tmp_fil->ftime = jiffies;
223 fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
227 fil->ftime = jiffies;
228 memcpy(fil->faddr, &src_addr, ETH_ALEN);
229 fil->vlan_id = vlan_id;
230 spin_lock(&adapter->rx_mac_learn_lock);
231 hlist_add_head(&(fil->fnode), head);
232 adapter->rx_fhash.fnum++;
233 spin_unlock(&adapter->rx_mac_learn_lock);
235 head = &adapter->fhash.fhead[hindex];
237 spin_lock(&adapter->mac_learn_lock);
239 tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
241 op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL;
242 ret = qlcnic_sre_macaddr_change(adapter,
246 hlist_del(&tmp_fil->fnode);
247 adapter->fhash.fnum--;
250 spin_unlock(&adapter->mac_learn_lock);
255 spin_unlock(&adapter->mac_learn_lock);
257 head = &adapter->rx_fhash.fhead[hindex];
259 spin_lock(&adapter->rx_mac_learn_lock);
261 tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
263 qlcnic_delete_rx_list_mac(adapter, tmp_fil, &src_addr,
266 spin_unlock(&adapter->rx_mac_learn_lock);
270 void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr,
273 struct cmd_desc_type0 *hwdesc;
274 struct qlcnic_nic_req *req;
275 struct qlcnic_mac_req *mac_req;
276 struct qlcnic_vlan_req *vlan_req;
277 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
281 producer = tx_ring->producer;
282 hwdesc = &tx_ring->desc_head[tx_ring->producer];
284 req = (struct qlcnic_nic_req *)hwdesc;
285 memset(req, 0, sizeof(struct qlcnic_nic_req));
286 req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
288 word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
289 req->req_hdr = cpu_to_le64(word);
291 mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
292 mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
293 memcpy(mac_req->mac_addr, uaddr, ETH_ALEN);
295 vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
296 vlan_req->vlan_id = cpu_to_le16(vlan_id);
298 tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
302 static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
303 struct cmd_desc_type0 *first_desc,
306 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data);
307 struct ethhdr *phdr = (struct ethhdr *)(skb->data);
308 u16 protocol = ntohs(skb->protocol);
309 struct qlcnic_filter *fil, *tmp_fil;
310 struct hlist_head *head;
311 struct hlist_node *n;
316 if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
319 if (adapter->flags & QLCNIC_VLAN_FILTERING) {
320 if (protocol == ETH_P_8021Q) {
321 vh = (struct vlan_ethhdr *)skb->data;
322 vlan_id = ntohs(vh->h_vlan_TCI);
323 } else if (vlan_tx_tag_present(skb)) {
324 vlan_id = vlan_tx_tag_get(skb);
328 memcpy(&src_addr, phdr->h_source, ETH_ALEN);
329 hval = qlcnic_mac_hash(src_addr, vlan_id);
330 hindex = hval & (adapter->fhash.fbucket_size - 1);
331 head = &(adapter->fhash.fhead[hindex]);
333 hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
334 if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) &&
335 tmp_fil->vlan_id == vlan_id) {
336 if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
337 qlcnic_change_filter(adapter, &src_addr,
339 tmp_fil->ftime = jiffies;
344 if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) {
345 adapter->stats.mac_filter_limit_overrun++;
349 fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
353 qlcnic_change_filter(adapter, &src_addr, vlan_id);
354 fil->ftime = jiffies;
355 fil->vlan_id = vlan_id;
356 memcpy(fil->faddr, &src_addr, ETH_ALEN);
357 spin_lock(&adapter->mac_learn_lock);
358 hlist_add_head(&(fil->fnode), head);
359 adapter->fhash.fnum++;
360 spin_unlock(&adapter->mac_learn_lock);
363 #define QLCNIC_ENCAP_VXLAN_PKT BIT_0
364 #define QLCNIC_ENCAP_OUTER_L3_IP6 BIT_1
365 #define QLCNIC_ENCAP_INNER_L3_IP6 BIT_2
366 #define QLCNIC_ENCAP_INNER_L4_UDP BIT_3
367 #define QLCNIC_ENCAP_DO_L3_CSUM BIT_4
368 #define QLCNIC_ENCAP_DO_L4_CSUM BIT_5
370 static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter,
371 struct cmd_desc_type0 *first_desc,
373 struct qlcnic_host_tx_ring *tx_ring)
375 u8 opcode = 0, inner_hdr_len = 0, outer_hdr_len = 0, total_hdr_len = 0;
376 int copied, copy_len, descr_size;
377 u32 producer = tx_ring->producer;
378 struct cmd_desc_type0 *hwdesc;
379 u16 flags = 0, encap_descr = 0;
381 opcode = QLCNIC_TX_ETHER_PKT;
382 encap_descr = QLCNIC_ENCAP_VXLAN_PKT;
384 if (skb_is_gso(skb)) {
385 inner_hdr_len = skb_inner_transport_header(skb) +
386 inner_tcp_hdrlen(skb) -
387 skb_inner_mac_header(skb);
389 /* VXLAN header size = 8 */
390 outer_hdr_len = skb_transport_offset(skb) + 8 +
391 sizeof(struct udphdr);
392 first_desc->outer_hdr_length = outer_hdr_len;
393 total_hdr_len = inner_hdr_len + outer_hdr_len;
394 encap_descr |= QLCNIC_ENCAP_DO_L3_CSUM |
395 QLCNIC_ENCAP_DO_L4_CSUM;
396 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
397 first_desc->hdr_length = inner_hdr_len;
399 /* Copy inner and outer headers in Tx descriptor(s)
400 * If total_hdr_len > cmd_desc_type0, use multiple
404 descr_size = (int)sizeof(struct cmd_desc_type0);
405 while (copied < total_hdr_len) {
406 copy_len = min(descr_size, (total_hdr_len - copied));
407 hwdesc = &tx_ring->desc_head[producer];
408 tx_ring->cmd_buf_arr[producer].skb = NULL;
409 skb_copy_from_linear_data_offset(skb, copied,
413 producer = get_next_index(producer, tx_ring->num_desc);
416 tx_ring->producer = producer;
418 /* Make sure updated tx_ring->producer is visible
419 * for qlcnic_tx_avail()
422 adapter->stats.encap_lso_frames++;
424 opcode = QLCNIC_TX_ENCAP_LSO;
425 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
426 if (inner_ip_hdr(skb)->version == 6) {
427 if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
428 encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
430 if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP)
431 encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
434 adapter->stats.encap_tx_csummed++;
435 opcode = QLCNIC_TX_ENCAP_PKT;
438 /* Prepare first 16 bits of byte offset 16 of Tx descriptor */
439 if (ip_hdr(skb)->version == 6)
440 encap_descr |= QLCNIC_ENCAP_OUTER_L3_IP6;
442 /* outer IP header's size in 32bit words size*/
443 encap_descr |= (skb_network_header_len(skb) >> 2) << 6;
445 /* outer IP header offset */
446 encap_descr |= skb_network_offset(skb) << 10;
447 first_desc->encap_descr = cpu_to_le16(encap_descr);
449 first_desc->tcp_hdr_offset = skb_inner_transport_header(skb) -
451 first_desc->ip_hdr_offset = skb_inner_network_offset(skb);
453 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
458 static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
459 struct cmd_desc_type0 *first_desc, struct sk_buff *skb,
460 struct qlcnic_host_tx_ring *tx_ring)
462 u8 l4proto, opcode = 0, hdr_len = 0;
463 u16 flags = 0, vlan_tci = 0;
464 int copied, offset, copy_len, size;
465 struct cmd_desc_type0 *hwdesc;
466 struct vlan_ethhdr *vh;
467 u16 protocol = ntohs(skb->protocol);
468 u32 producer = tx_ring->producer;
470 if (protocol == ETH_P_8021Q) {
471 vh = (struct vlan_ethhdr *)skb->data;
472 flags = QLCNIC_FLAGS_VLAN_TAGGED;
473 vlan_tci = ntohs(vh->h_vlan_TCI);
474 protocol = ntohs(vh->h_vlan_encapsulated_proto);
475 } else if (vlan_tx_tag_present(skb)) {
476 flags = QLCNIC_FLAGS_VLAN_OOB;
477 vlan_tci = vlan_tx_tag_get(skb);
479 if (unlikely(adapter->tx_pvid)) {
480 if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
482 if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
485 flags = QLCNIC_FLAGS_VLAN_OOB;
486 vlan_tci = adapter->tx_pvid;
489 qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
490 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
492 if (*(skb->data) & BIT_0) {
494 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
496 opcode = QLCNIC_TX_ETHER_PKT;
497 if (skb_is_gso(skb)) {
498 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
499 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
500 first_desc->hdr_length = hdr_len;
501 opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 :
504 /* For LSO, we need to copy the MAC/IP/TCP headers into
505 * the descriptor ring */
509 if (flags & QLCNIC_FLAGS_VLAN_OOB) {
510 first_desc->hdr_length += VLAN_HLEN;
511 first_desc->tcp_hdr_offset = VLAN_HLEN;
512 first_desc->ip_hdr_offset = VLAN_HLEN;
514 /* Only in case of TSO on vlan device */
515 flags |= QLCNIC_FLAGS_VLAN_TAGGED;
517 /* Create a TSO vlan header template for firmware */
518 hwdesc = &tx_ring->desc_head[producer];
519 tx_ring->cmd_buf_arr[producer].skb = NULL;
521 copy_len = min((int)sizeof(struct cmd_desc_type0) -
522 offset, hdr_len + VLAN_HLEN);
524 vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
525 skb_copy_from_linear_data(skb, vh, 12);
526 vh->h_vlan_proto = htons(ETH_P_8021Q);
527 vh->h_vlan_TCI = htons(vlan_tci);
529 skb_copy_from_linear_data_offset(skb, 12,
532 copied = copy_len - VLAN_HLEN;
534 producer = get_next_index(producer, tx_ring->num_desc);
537 while (copied < hdr_len) {
538 size = (int)sizeof(struct cmd_desc_type0) - offset;
539 copy_len = min(size, (hdr_len - copied));
540 hwdesc = &tx_ring->desc_head[producer];
541 tx_ring->cmd_buf_arr[producer].skb = NULL;
542 skb_copy_from_linear_data_offset(skb, copied,
547 producer = get_next_index(producer, tx_ring->num_desc);
550 tx_ring->producer = producer;
552 adapter->stats.lso_frames++;
554 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
555 if (protocol == ETH_P_IP) {
556 l4proto = ip_hdr(skb)->protocol;
558 if (l4proto == IPPROTO_TCP)
559 opcode = QLCNIC_TX_TCP_PKT;
560 else if (l4proto == IPPROTO_UDP)
561 opcode = QLCNIC_TX_UDP_PKT;
562 } else if (protocol == ETH_P_IPV6) {
563 l4proto = ipv6_hdr(skb)->nexthdr;
565 if (l4proto == IPPROTO_TCP)
566 opcode = QLCNIC_TX_TCPV6_PKT;
567 else if (l4proto == IPPROTO_UDP)
568 opcode = QLCNIC_TX_UDPV6_PKT;
571 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
572 first_desc->ip_hdr_offset += skb_network_offset(skb);
573 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
578 static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
579 struct qlcnic_cmd_buffer *pbuf)
581 struct qlcnic_skb_frag *nf;
582 struct skb_frag_struct *frag;
586 nr_frags = skb_shinfo(skb)->nr_frags;
587 nf = &pbuf->frag_array[0];
589 map = pci_map_single(pdev, skb->data, skb_headlen(skb),
591 if (pci_dma_mapping_error(pdev, map))
595 nf->length = skb_headlen(skb);
597 for (i = 0; i < nr_frags; i++) {
598 frag = &skb_shinfo(skb)->frags[i];
599 nf = &pbuf->frag_array[i+1];
600 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
602 if (dma_mapping_error(&pdev->dev, map))
606 nf->length = skb_frag_size(frag);
613 nf = &pbuf->frag_array[i+1];
614 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
617 nf = &pbuf->frag_array[0];
618 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
624 static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
625 struct qlcnic_cmd_buffer *pbuf)
627 struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
628 int i, nr_frags = skb_shinfo(skb)->nr_frags;
630 for (i = 0; i < nr_frags; i++) {
631 nf = &pbuf->frag_array[i+1];
632 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
635 nf = &pbuf->frag_array[0];
636 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
640 static inline void qlcnic_clear_cmddesc(u64 *desc)
647 netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
649 struct qlcnic_adapter *adapter = netdev_priv(netdev);
650 struct qlcnic_host_tx_ring *tx_ring;
651 struct qlcnic_cmd_buffer *pbuf;
652 struct qlcnic_skb_frag *buffrag;
653 struct cmd_desc_type0 *hwdesc, *first_desc;
654 struct pci_dev *pdev;
656 int i, k, frag_count, delta = 0;
657 u32 producer, num_txd;
659 bool l4_is_udp = false;
661 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
662 netif_tx_stop_all_queues(netdev);
663 return NETDEV_TX_BUSY;
666 if (adapter->flags & QLCNIC_MACSPOOF) {
667 phdr = (struct ethhdr *)skb->data;
668 if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
672 tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)];
673 num_txd = tx_ring->num_desc;
675 frag_count = skb_shinfo(skb)->nr_frags + 1;
677 /* 14 frags supported for normal packet and
678 * 32 frags supported for TSO packet
680 if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
681 for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
682 delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
684 if (!__pskb_pull_tail(skb, delta))
687 frag_count = 1 + skb_shinfo(skb)->nr_frags;
690 if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
691 netif_tx_stop_queue(tx_ring->txq);
692 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
693 netif_tx_start_queue(tx_ring->txq);
695 tx_ring->tx_stats.xmit_off++;
696 return NETDEV_TX_BUSY;
700 producer = tx_ring->producer;
701 pbuf = &tx_ring->cmd_buf_arr[producer];
702 pdev = adapter->pdev;
703 first_desc = &tx_ring->desc_head[producer];
704 hwdesc = &tx_ring->desc_head[producer];
705 qlcnic_clear_cmddesc((u64 *)hwdesc);
707 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
708 adapter->stats.tx_dma_map_error++;
713 pbuf->frag_count = frag_count;
715 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
716 qlcnic_set_tx_port(first_desc, adapter->portnum);
718 for (i = 0; i < frag_count; i++) {
721 if ((k == 0) && (i > 0)) {
722 /* move to next desc.*/
723 producer = get_next_index(producer, num_txd);
724 hwdesc = &tx_ring->desc_head[producer];
725 qlcnic_clear_cmddesc((u64 *)hwdesc);
726 tx_ring->cmd_buf_arr[producer].skb = NULL;
729 buffrag = &pbuf->frag_array[i];
730 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
733 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
736 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
739 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
742 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
747 tx_ring->producer = get_next_index(producer, num_txd);
750 protocol = ntohs(skb->protocol);
751 if (protocol == ETH_P_IP)
752 l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP;
753 else if (protocol == ETH_P_IPV6)
754 l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP;
756 /* Check if it is a VXLAN packet */
757 if (!skb->encapsulation || !l4_is_udp ||
758 !qlcnic_encap_tx_offload(adapter)) {
759 if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb,
763 if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc,
768 if (adapter->drv_mac_learn)
769 qlcnic_send_filter(adapter, first_desc, skb);
771 tx_ring->tx_stats.tx_bytes += skb->len;
772 tx_ring->tx_stats.xmit_called++;
774 qlcnic_update_cmd_producer(tx_ring);
779 qlcnic_unmap_buffers(pdev, skb, pbuf);
781 adapter->stats.txdropped++;
782 dev_kfree_skb_any(skb);
786 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
788 struct net_device *netdev = adapter->netdev;
790 if (adapter->ahw->linkup && !linkup) {
791 netdev_info(netdev, "NIC Link is down\n");
792 adapter->ahw->linkup = 0;
793 netif_carrier_off(netdev);
794 } else if (!adapter->ahw->linkup && linkup) {
795 adapter->ahw->linkup = 1;
797 /* Do not advertise Link up to the stack if device
798 * is in loopback mode
800 if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) {
801 netdev_info(netdev, "NIC Link is up for loopback test\n");
805 netdev_info(netdev, "NIC Link is up\n");
806 netif_carrier_on(netdev);
810 static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
811 struct qlcnic_host_rds_ring *rds_ring,
812 struct qlcnic_rx_buffer *buffer)
816 struct pci_dev *pdev = adapter->pdev;
818 skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
820 adapter->stats.skb_alloc_failure++;
824 skb_reserve(skb, NET_IP_ALIGN);
825 dma = pci_map_single(pdev, skb->data,
826 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
828 if (pci_dma_mapping_error(pdev, dma)) {
829 adapter->stats.rx_dma_map_error++;
830 dev_kfree_skb_any(skb);
840 static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
841 struct qlcnic_host_rds_ring *rds_ring,
844 struct rcv_desc *pdesc;
845 struct qlcnic_rx_buffer *buffer;
847 uint32_t producer, handle;
848 struct list_head *head;
850 if (!spin_trylock(&rds_ring->lock))
853 producer = rds_ring->producer;
854 head = &rds_ring->free_list;
855 while (!list_empty(head)) {
856 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
859 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
863 list_del(&buffer->list);
865 /* make a rcv descriptor */
866 pdesc = &rds_ring->desc_head[producer];
867 handle = qlcnic_get_ref_handle(adapter,
868 buffer->ref_handle, ring_id);
869 pdesc->reference_handle = cpu_to_le16(handle);
870 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
871 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
872 producer = get_next_index(producer, rds_ring->num_desc);
875 rds_ring->producer = producer;
876 writel((producer - 1) & (rds_ring->num_desc - 1),
877 rds_ring->crb_rcv_producer);
879 spin_unlock(&rds_ring->lock);
882 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
883 struct qlcnic_host_tx_ring *tx_ring,
886 u32 sw_consumer, hw_consumer;
887 int i, done, count = 0;
888 struct qlcnic_cmd_buffer *buffer;
889 struct pci_dev *pdev = adapter->pdev;
890 struct net_device *netdev = adapter->netdev;
891 struct qlcnic_skb_frag *frag;
893 if (!spin_trylock(&tx_ring->tx_clean_lock))
896 sw_consumer = tx_ring->sw_consumer;
897 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
899 while (sw_consumer != hw_consumer) {
900 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
902 frag = &buffer->frag_array[0];
903 pci_unmap_single(pdev, frag->dma, frag->length,
906 for (i = 1; i < buffer->frag_count; i++) {
908 pci_unmap_page(pdev, frag->dma, frag->length,
912 tx_ring->tx_stats.xmit_finished++;
913 dev_kfree_skb_any(buffer->skb);
917 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
918 if (++count >= budget)
922 tx_ring->sw_consumer = sw_consumer;
924 if (count && netif_running(netdev)) {
926 if (netif_tx_queue_stopped(tx_ring->txq) &&
927 netif_carrier_ok(netdev)) {
928 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
929 netif_tx_wake_queue(tx_ring->txq);
930 tx_ring->tx_stats.xmit_on++;
933 adapter->tx_timeo_cnt = 0;
936 * If everything is freed up to consumer then check if the ring is full
937 * If the ring is full then check if more needs to be freed and
938 * schedule the call back again.
940 * This happens when there are 2 CPUs. One could be freeing and the
941 * other filling it. If the ring is full when we get out of here and
942 * the card has already interrupted the host then the host can miss the
945 * There is still a possible race condition and the host could miss an
946 * interrupt. The card has to take care of this.
948 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
949 done = (sw_consumer == hw_consumer);
951 spin_unlock(&tx_ring->tx_clean_lock);
956 static int qlcnic_poll(struct napi_struct *napi, int budget)
958 int tx_complete, work_done;
959 struct qlcnic_host_sds_ring *sds_ring;
960 struct qlcnic_adapter *adapter;
961 struct qlcnic_host_tx_ring *tx_ring;
963 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
964 adapter = sds_ring->adapter;
965 tx_ring = sds_ring->tx_ring;
967 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring,
969 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
970 if ((work_done < budget) && tx_complete) {
971 napi_complete(&sds_ring->napi);
972 if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
973 qlcnic_enable_sds_intr(adapter, sds_ring);
974 qlcnic_enable_tx_intr(adapter, tx_ring);
981 static int qlcnic_tx_poll(struct napi_struct *napi, int budget)
983 struct qlcnic_host_tx_ring *tx_ring;
984 struct qlcnic_adapter *adapter;
987 tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
988 adapter = tx_ring->adapter;
990 work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
992 napi_complete(&tx_ring->napi);
993 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
994 qlcnic_enable_tx_intr(adapter, tx_ring);
1000 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
1002 struct qlcnic_host_sds_ring *sds_ring;
1003 struct qlcnic_adapter *adapter;
1006 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1007 adapter = sds_ring->adapter;
1009 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1011 if (work_done < budget) {
1012 napi_complete(&sds_ring->napi);
1013 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1014 qlcnic_enable_sds_intr(adapter, sds_ring);
1020 static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1021 struct qlcnic_fw_msg *msg)
1024 u16 cable_len, link_speed;
1025 u8 link_status, module, duplex, autoneg, lb_status = 0;
1026 struct net_device *netdev = adapter->netdev;
1028 adapter->ahw->has_link_events = 1;
1030 cable_OUI = msg->body[1] & 0xffffffff;
1031 cable_len = (msg->body[1] >> 32) & 0xffff;
1032 link_speed = (msg->body[1] >> 48) & 0xffff;
1034 link_status = msg->body[2] & 0xff;
1035 duplex = (msg->body[2] >> 16) & 0xff;
1036 autoneg = (msg->body[2] >> 24) & 0xff;
1037 lb_status = (msg->body[2] >> 32) & 0x3;
1039 module = (msg->body[2] >> 8) & 0xff;
1040 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1041 dev_info(&netdev->dev,
1042 "unsupported cable: OUI 0x%x, length %d\n",
1043 cable_OUI, cable_len);
1044 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1045 dev_info(&netdev->dev, "unsupported cable length %d\n",
1048 if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
1049 lb_status == QLCNIC_ELB_MODE))
1050 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
1052 qlcnic_advert_link_change(adapter, link_status);
1054 if (duplex == LINKEVENT_FULL_DUPLEX)
1055 adapter->ahw->link_duplex = DUPLEX_FULL;
1057 adapter->ahw->link_duplex = DUPLEX_HALF;
1059 adapter->ahw->module_type = module;
1060 adapter->ahw->link_autoneg = autoneg;
1063 adapter->ahw->link_speed = link_speed;
1065 adapter->ahw->link_speed = SPEED_UNKNOWN;
1066 adapter->ahw->link_duplex = DUPLEX_UNKNOWN;
1070 static void qlcnic_handle_fw_message(int desc_cnt, int index,
1071 struct qlcnic_host_sds_ring *sds_ring)
1073 struct qlcnic_fw_msg msg;
1074 struct status_desc *desc;
1075 struct qlcnic_adapter *adapter;
1077 int i = 0, opcode, ret;
1079 while (desc_cnt > 0 && i < 8) {
1080 desc = &sds_ring->desc_head[index];
1081 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1082 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1084 index = get_next_index(index, sds_ring->num_desc);
1088 adapter = sds_ring->adapter;
1089 dev = &adapter->pdev->dev;
1090 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1093 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1094 qlcnic_handle_linkevent(adapter, &msg);
1096 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
1097 ret = (u32)(msg.body[1]);
1100 adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
1103 dev_info(dev, "loopback already in progress\n");
1104 adapter->ahw->diag_cnt = -EINPROGRESS;
1107 dev_info(dev, "loopback cable is not connected\n");
1108 adapter->ahw->diag_cnt = -ENODEV;
1112 "loopback configure request failed, err %x\n",
1114 adapter->ahw->diag_cnt = -EIO;
1118 case QLCNIC_C2H_OPCODE_GET_DCB_AEN:
1119 qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg);
1126 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1127 struct qlcnic_host_rds_ring *ring,
1128 u16 index, u16 cksum)
1130 struct qlcnic_rx_buffer *buffer;
1131 struct sk_buff *skb;
1133 buffer = &ring->rx_buf_arr[index];
1134 if (unlikely(buffer->skb == NULL)) {
1139 pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size,
1140 PCI_DMA_FROMDEVICE);
1143 if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
1144 (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
1145 adapter->stats.csummed++;
1146 skb->ip_summed = CHECKSUM_UNNECESSARY;
1148 skb_checksum_none_assert(skb);
1157 static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
1158 struct sk_buff *skb, u16 *vlan_tag)
1160 struct ethhdr *eth_hdr;
1162 if (!__vlan_get_tag(skb, vlan_tag)) {
1163 eth_hdr = (struct ethhdr *)skb->data;
1164 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
1165 skb_pull(skb, VLAN_HLEN);
1167 if (!adapter->rx_pvid)
1170 if (*vlan_tag == adapter->rx_pvid) {
1171 /* Outer vlan tag. Packet should follow non-vlan path */
1175 if (adapter->flags & QLCNIC_TAGGING_ENABLED)
1181 static struct qlcnic_rx_buffer *
1182 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1183 struct qlcnic_host_sds_ring *sds_ring, int ring,
1186 struct net_device *netdev = adapter->netdev;
1187 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1188 struct qlcnic_rx_buffer *buffer;
1189 struct sk_buff *skb;
1190 struct qlcnic_host_rds_ring *rds_ring;
1191 int index, length, cksum, pkt_offset, is_lb_pkt;
1192 u16 vid = 0xffff, t_vid;
1194 if (unlikely(ring >= adapter->max_rds_rings))
1197 rds_ring = &recv_ctx->rds_rings[ring];
1199 index = qlcnic_get_sts_refhandle(sts_data0);
1200 if (unlikely(index >= rds_ring->num_desc))
1203 buffer = &rds_ring->rx_buf_arr[index];
1204 length = qlcnic_get_sts_totallength(sts_data0);
1205 cksum = qlcnic_get_sts_status(sts_data0);
1206 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1208 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1212 if (adapter->rx_mac_learn) {
1214 is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1215 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1218 if (length > rds_ring->skb_size)
1219 skb_put(skb, rds_ring->skb_size);
1221 skb_put(skb, length);
1224 skb_pull(skb, pkt_offset);
1226 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1227 adapter->stats.rxdropped++;
1232 skb->protocol = eth_type_trans(skb, netdev);
1235 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1237 napi_gro_receive(&sds_ring->napi, skb);
1239 adapter->stats.rx_pkts++;
1240 adapter->stats.rxbytes += length;
1245 #define QLC_TCP_HDR_SIZE 20
1246 #define QLC_TCP_TS_OPTION_SIZE 12
1247 #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1249 static struct qlcnic_rx_buffer *
1250 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1251 int ring, u64 sts_data0, u64 sts_data1)
1253 struct net_device *netdev = adapter->netdev;
1254 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1255 struct qlcnic_rx_buffer *buffer;
1256 struct sk_buff *skb;
1257 struct qlcnic_host_rds_ring *rds_ring;
1259 struct ipv6hdr *ipv6h;
1261 bool push, timestamp;
1262 int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt;
1263 u16 lro_length, length, data_offset, t_vid, vid = 0xffff;
1266 if (unlikely(ring >= adapter->max_rds_rings))
1269 rds_ring = &recv_ctx->rds_rings[ring];
1271 index = qlcnic_get_lro_sts_refhandle(sts_data0);
1272 if (unlikely(index >= rds_ring->num_desc))
1275 buffer = &rds_ring->rx_buf_arr[index];
1277 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1278 lro_length = qlcnic_get_lro_sts_length(sts_data0);
1279 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1280 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1281 push = qlcnic_get_lro_sts_push_flag(sts_data0);
1282 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1284 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1288 if (adapter->rx_mac_learn) {
1290 is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1291 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1295 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1297 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1299 skb_put(skb, lro_length + data_offset);
1300 skb_pull(skb, l2_hdr_offset);
1302 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1303 adapter->stats.rxdropped++;
1308 skb->protocol = eth_type_trans(skb, netdev);
1310 if (ntohs(skb->protocol) == ETH_P_IPV6) {
1311 ipv6h = (struct ipv6hdr *)skb->data;
1312 th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1313 length = (th->doff << 2) + lro_length;
1314 ipv6h->payload_len = htons(length);
1316 iph = (struct iphdr *)skb->data;
1317 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1318 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1319 csum_replace2(&iph->check, iph->tot_len, htons(length));
1320 iph->tot_len = htons(length);
1324 th->seq = htonl(seq_number);
1327 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1328 skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
1329 if (skb->protocol == htons(ETH_P_IPV6))
1330 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1332 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1336 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1337 netif_receive_skb(skb);
1339 adapter->stats.lro_pkts++;
1340 adapter->stats.lrobytes += length;
1345 static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1347 struct qlcnic_host_rds_ring *rds_ring;
1348 struct qlcnic_adapter *adapter = sds_ring->adapter;
1349 struct list_head *cur;
1350 struct status_desc *desc;
1351 struct qlcnic_rx_buffer *rxbuf;
1352 int opcode, desc_cnt, count = 0;
1353 u64 sts_data0, sts_data1;
1355 u32 consumer = sds_ring->consumer;
1357 while (count < max) {
1358 desc = &sds_ring->desc_head[consumer];
1359 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1361 if (!(sts_data0 & STATUS_OWNER_HOST))
1364 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1365 opcode = qlcnic_get_sts_opcode(sts_data0);
1367 case QLCNIC_RXPKT_DESC:
1368 case QLCNIC_OLD_RXPKT_DESC:
1369 case QLCNIC_SYN_OFFLOAD:
1370 ring = qlcnic_get_sts_type(sts_data0);
1371 rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring,
1374 case QLCNIC_LRO_DESC:
1375 ring = qlcnic_get_lro_sts_type(sts_data0);
1376 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1377 rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1380 case QLCNIC_RESPONSE_DESC:
1381 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1385 WARN_ON(desc_cnt > 1);
1388 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1390 adapter->stats.null_rxbuf++;
1392 for (; desc_cnt > 0; desc_cnt--) {
1393 desc = &sds_ring->desc_head[consumer];
1394 desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW;
1395 consumer = get_next_index(consumer, sds_ring->num_desc);
1400 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1401 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1402 if (!list_empty(&sds_ring->free_list[ring])) {
1403 list_for_each(cur, &sds_ring->free_list[ring]) {
1404 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1406 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1408 spin_lock(&rds_ring->lock);
1409 list_splice_tail_init(&sds_ring->free_list[ring],
1410 &rds_ring->free_list);
1411 spin_unlock(&rds_ring->lock);
1414 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1418 sds_ring->consumer = consumer;
1419 writel(consumer, sds_ring->crb_sts_consumer);
1425 void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1426 struct qlcnic_host_rds_ring *rds_ring, u8 ring_id)
1428 struct rcv_desc *pdesc;
1429 struct qlcnic_rx_buffer *buffer;
1431 u32 producer, handle;
1432 struct list_head *head;
1434 producer = rds_ring->producer;
1435 head = &rds_ring->free_list;
1437 while (!list_empty(head)) {
1439 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1442 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1447 list_del(&buffer->list);
1449 /* make a rcv descriptor */
1450 pdesc = &rds_ring->desc_head[producer];
1451 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1452 handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle,
1454 pdesc->reference_handle = cpu_to_le16(handle);
1455 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1456 producer = get_next_index(producer, rds_ring->num_desc);
1460 rds_ring->producer = producer;
1461 writel((producer-1) & (rds_ring->num_desc-1),
1462 rds_ring->crb_rcv_producer);
1466 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1469 unsigned char *data = skb->data;
1471 pr_info(KERN_INFO "\n");
1472 for (i = 0; i < skb->len; i++) {
1473 QLCDB(adapter, DRV, "%02x ", data[i]);
1474 if ((i & 0x0f) == 8)
1475 pr_info(KERN_INFO "\n");
1479 static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
1482 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1483 struct sk_buff *skb;
1484 struct qlcnic_host_rds_ring *rds_ring;
1485 int index, length, cksum, pkt_offset;
1487 if (unlikely(ring >= adapter->max_rds_rings))
1490 rds_ring = &recv_ctx->rds_rings[ring];
1492 index = qlcnic_get_sts_refhandle(sts_data0);
1493 length = qlcnic_get_sts_totallength(sts_data0);
1494 if (unlikely(index >= rds_ring->num_desc))
1497 cksum = qlcnic_get_sts_status(sts_data0);
1498 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1500 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1504 if (length > rds_ring->skb_size)
1505 skb_put(skb, rds_ring->skb_size);
1507 skb_put(skb, length);
1510 skb_pull(skb, pkt_offset);
1512 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1513 adapter->ahw->diag_cnt++;
1515 dump_skb(skb, adapter);
1517 dev_kfree_skb_any(skb);
1518 adapter->stats.rx_pkts++;
1519 adapter->stats.rxbytes += length;
1524 void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1526 struct qlcnic_adapter *adapter = sds_ring->adapter;
1527 struct status_desc *desc;
1529 int ring, opcode, desc_cnt;
1531 u32 consumer = sds_ring->consumer;
1533 desc = &sds_ring->desc_head[consumer];
1534 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1536 if (!(sts_data0 & STATUS_OWNER_HOST))
1539 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1540 opcode = qlcnic_get_sts_opcode(sts_data0);
1542 case QLCNIC_RESPONSE_DESC:
1543 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1546 ring = qlcnic_get_sts_type(sts_data0);
1547 qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1551 for (; desc_cnt > 0; desc_cnt--) {
1552 desc = &sds_ring->desc_head[consumer];
1553 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1554 consumer = get_next_index(consumer, sds_ring->num_desc);
1557 sds_ring->consumer = consumer;
1558 writel(consumer, sds_ring->crb_sts_consumer);
1561 int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
1562 struct net_device *netdev)
1565 struct qlcnic_host_sds_ring *sds_ring;
1566 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1567 struct qlcnic_host_tx_ring *tx_ring;
1569 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
1572 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1573 sds_ring = &recv_ctx->sds_rings[ring];
1574 if (qlcnic_check_multi_tx(adapter) &&
1575 !adapter->ahw->diag_test) {
1576 netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll,
1579 if (ring == (adapter->drv_sds_rings - 1))
1580 netif_napi_add(netdev, &sds_ring->napi,
1584 netif_napi_add(netdev, &sds_ring->napi,
1590 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
1591 qlcnic_free_sds_rings(recv_ctx);
1595 if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1596 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1597 tx_ring = &adapter->tx_ring[ring];
1598 netif_napi_add(netdev, &tx_ring->napi, qlcnic_tx_poll,
1606 void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter)
1609 struct qlcnic_host_sds_ring *sds_ring;
1610 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1611 struct qlcnic_host_tx_ring *tx_ring;
1613 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1614 sds_ring = &recv_ctx->sds_rings[ring];
1615 netif_napi_del(&sds_ring->napi);
1618 qlcnic_free_sds_rings(adapter->recv_ctx);
1620 if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1621 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1622 tx_ring = &adapter->tx_ring[ring];
1623 netif_napi_del(&tx_ring->napi);
1627 qlcnic_free_tx_rings(adapter);
1630 void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter)
1633 struct qlcnic_host_sds_ring *sds_ring;
1634 struct qlcnic_host_tx_ring *tx_ring;
1635 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1637 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1640 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1641 sds_ring = &recv_ctx->sds_rings[ring];
1642 napi_enable(&sds_ring->napi);
1643 qlcnic_enable_sds_intr(adapter, sds_ring);
1646 if (qlcnic_check_multi_tx(adapter) &&
1647 (adapter->flags & QLCNIC_MSIX_ENABLED) &&
1648 !adapter->ahw->diag_test) {
1649 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1650 tx_ring = &adapter->tx_ring[ring];
1651 napi_enable(&tx_ring->napi);
1652 qlcnic_enable_tx_intr(adapter, tx_ring);
1657 void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
1660 struct qlcnic_host_sds_ring *sds_ring;
1661 struct qlcnic_host_tx_ring *tx_ring;
1662 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1664 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1667 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1668 sds_ring = &recv_ctx->sds_rings[ring];
1669 qlcnic_disable_sds_intr(adapter, sds_ring);
1670 napi_synchronize(&sds_ring->napi);
1671 napi_disable(&sds_ring->napi);
1674 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
1675 !adapter->ahw->diag_test &&
1676 qlcnic_check_multi_tx(adapter)) {
1677 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1678 tx_ring = &adapter->tx_ring[ring];
1679 qlcnic_disable_tx_intr(adapter, tx_ring);
1680 napi_synchronize(&tx_ring->napi);
1681 napi_disable(&tx_ring->napi);
1686 #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36)
1687 #define QLC_83XX_LRO_LB_PKT (1ULL << 46)
1689 static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt)
1692 return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0;
1694 return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0;
1697 #define QLCNIC_ENCAP_LENGTH_MASK 0x7f
1699 static inline u8 qlcnic_encap_length(u64 sts_data)
1701 return sts_data & QLCNIC_ENCAP_LENGTH_MASK;
1704 static struct qlcnic_rx_buffer *
1705 qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
1706 struct qlcnic_host_sds_ring *sds_ring,
1707 u8 ring, u64 sts_data[])
1709 struct net_device *netdev = adapter->netdev;
1710 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1711 struct qlcnic_rx_buffer *buffer;
1712 struct sk_buff *skb;
1713 struct qlcnic_host_rds_ring *rds_ring;
1714 int index, length, cksum, is_lb_pkt;
1718 if (unlikely(ring >= adapter->max_rds_rings))
1721 rds_ring = &recv_ctx->rds_rings[ring];
1723 index = qlcnic_83xx_hndl(sts_data[0]);
1724 if (unlikely(index >= rds_ring->num_desc))
1727 buffer = &rds_ring->rx_buf_arr[index];
1728 length = qlcnic_83xx_pktln(sts_data[0]);
1729 cksum = qlcnic_83xx_csum_status(sts_data[1]);
1730 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1734 if (length > rds_ring->skb_size)
1735 skb_put(skb, rds_ring->skb_size);
1737 skb_put(skb, length);
1739 err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1741 if (adapter->rx_mac_learn) {
1742 is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0);
1743 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1746 if (unlikely(err)) {
1747 adapter->stats.rxdropped++;
1752 skb->protocol = eth_type_trans(skb, netdev);
1754 if (qlcnic_encap_length(sts_data[1]) &&
1755 skb->ip_summed == CHECKSUM_UNNECESSARY) {
1756 skb->encapsulation = 1;
1757 adapter->stats.encap_rx_csummed++;
1761 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1763 napi_gro_receive(&sds_ring->napi, skb);
1765 adapter->stats.rx_pkts++;
1766 adapter->stats.rxbytes += length;
1771 static struct qlcnic_rx_buffer *
1772 qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
1773 u8 ring, u64 sts_data[])
1775 struct net_device *netdev = adapter->netdev;
1776 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1777 struct qlcnic_rx_buffer *buffer;
1778 struct sk_buff *skb;
1779 struct qlcnic_host_rds_ring *rds_ring;
1781 struct ipv6hdr *ipv6h;
1784 int l2_hdr_offset, l4_hdr_offset;
1785 int index, is_lb_pkt;
1786 u16 lro_length, length, data_offset, gso_size;
1790 if (unlikely(ring >= adapter->max_rds_rings))
1793 rds_ring = &recv_ctx->rds_rings[ring];
1795 index = qlcnic_83xx_hndl(sts_data[0]);
1796 if (unlikely(index >= rds_ring->num_desc))
1799 buffer = &rds_ring->rx_buf_arr[index];
1801 lro_length = qlcnic_83xx_lro_pktln(sts_data[0]);
1802 l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]);
1803 l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]);
1804 push = qlcnic_83xx_is_psh_bit(sts_data[1]);
1806 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1810 if (qlcnic_83xx_is_tstamp(sts_data[1]))
1811 data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE;
1813 data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE;
1815 skb_put(skb, lro_length + data_offset);
1816 skb_pull(skb, l2_hdr_offset);
1818 err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1820 if (adapter->rx_mac_learn) {
1821 is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1);
1822 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1825 if (unlikely(err)) {
1826 adapter->stats.rxdropped++;
1831 skb->protocol = eth_type_trans(skb, netdev);
1832 if (ntohs(skb->protocol) == ETH_P_IPV6) {
1833 ipv6h = (struct ipv6hdr *)skb->data;
1834 th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1836 length = (th->doff << 2) + lro_length;
1837 ipv6h->payload_len = htons(length);
1839 iph = (struct iphdr *)skb->data;
1840 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1841 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1842 csum_replace2(&iph->check, iph->tot_len, htons(length));
1843 iph->tot_len = htons(length);
1849 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1850 gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]);
1851 skb_shinfo(skb)->gso_size = gso_size;
1852 if (skb->protocol == htons(ETH_P_IPV6))
1853 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1855 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1859 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1861 netif_receive_skb(skb);
1863 adapter->stats.lro_pkts++;
1864 adapter->stats.lrobytes += length;
1868 static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
1871 struct qlcnic_host_rds_ring *rds_ring;
1872 struct qlcnic_adapter *adapter = sds_ring->adapter;
1873 struct list_head *cur;
1874 struct status_desc *desc;
1875 struct qlcnic_rx_buffer *rxbuf = NULL;
1878 int count = 0, opcode;
1879 u32 consumer = sds_ring->consumer;
1881 while (count < max) {
1882 desc = &sds_ring->desc_head[consumer];
1883 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
1884 opcode = qlcnic_83xx_opcode(sts_data[1]);
1887 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
1888 ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
1891 case QLC_83XX_REG_DESC:
1892 rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring,
1895 case QLC_83XX_LRO_DESC:
1896 rxbuf = qlcnic_83xx_process_lro(adapter, ring,
1900 dev_info(&adapter->pdev->dev,
1901 "Unknown opcode: 0x%x\n", opcode);
1906 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1908 adapter->stats.null_rxbuf++;
1910 desc = &sds_ring->desc_head[consumer];
1911 /* Reset the descriptor */
1912 desc->status_desc_data[1] = 0;
1913 consumer = get_next_index(consumer, sds_ring->num_desc);
1916 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1917 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1918 if (!list_empty(&sds_ring->free_list[ring])) {
1919 list_for_each(cur, &sds_ring->free_list[ring]) {
1920 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1922 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1924 spin_lock(&rds_ring->lock);
1925 list_splice_tail_init(&sds_ring->free_list[ring],
1926 &rds_ring->free_list);
1927 spin_unlock(&rds_ring->lock);
1929 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1932 sds_ring->consumer = consumer;
1933 writel(consumer, sds_ring->crb_sts_consumer);
1938 static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget)
1942 struct qlcnic_host_sds_ring *sds_ring;
1943 struct qlcnic_adapter *adapter;
1944 struct qlcnic_host_tx_ring *tx_ring;
1946 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1947 adapter = sds_ring->adapter;
1948 /* tx ring count = 1 */
1949 tx_ring = adapter->tx_ring;
1951 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1952 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1953 if ((work_done < budget) && tx_complete) {
1954 napi_complete(&sds_ring->napi);
1955 qlcnic_enable_sds_intr(adapter, sds_ring);
1961 static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
1965 struct qlcnic_host_sds_ring *sds_ring;
1966 struct qlcnic_adapter *adapter;
1967 struct qlcnic_host_tx_ring *tx_ring;
1969 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1970 adapter = sds_ring->adapter;
1971 /* tx ring count = 1 */
1972 tx_ring = adapter->tx_ring;
1974 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1975 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1976 if ((work_done < budget) && tx_complete) {
1977 napi_complete(&sds_ring->napi);
1978 qlcnic_enable_sds_intr(adapter, sds_ring);
1984 static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget)
1987 struct qlcnic_host_tx_ring *tx_ring;
1988 struct qlcnic_adapter *adapter;
1990 budget = QLCNIC_TX_POLL_BUDGET;
1991 tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
1992 adapter = tx_ring->adapter;
1993 work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1995 napi_complete(&tx_ring->napi);
1996 if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
1997 qlcnic_enable_tx_intr(adapter, tx_ring);
2003 static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget)
2006 struct qlcnic_host_sds_ring *sds_ring;
2007 struct qlcnic_adapter *adapter;
2009 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
2010 adapter = sds_ring->adapter;
2011 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
2012 if (work_done < budget) {
2013 napi_complete(&sds_ring->napi);
2014 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2015 qlcnic_enable_sds_intr(adapter, sds_ring);
2021 void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
2024 struct qlcnic_host_sds_ring *sds_ring;
2025 struct qlcnic_host_tx_ring *tx_ring;
2026 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2028 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2031 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2032 sds_ring = &recv_ctx->sds_rings[ring];
2033 napi_enable(&sds_ring->napi);
2034 if (adapter->flags & QLCNIC_MSIX_ENABLED)
2035 qlcnic_enable_sds_intr(adapter, sds_ring);
2038 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2039 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2040 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2041 tx_ring = &adapter->tx_ring[ring];
2042 napi_enable(&tx_ring->napi);
2043 qlcnic_enable_tx_intr(adapter, tx_ring);
2048 void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
2051 struct qlcnic_host_sds_ring *sds_ring;
2052 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2053 struct qlcnic_host_tx_ring *tx_ring;
2055 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2058 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2059 sds_ring = &recv_ctx->sds_rings[ring];
2060 if (adapter->flags & QLCNIC_MSIX_ENABLED)
2061 qlcnic_disable_sds_intr(adapter, sds_ring);
2062 napi_synchronize(&sds_ring->napi);
2063 napi_disable(&sds_ring->napi);
2066 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2067 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2068 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2069 tx_ring = &adapter->tx_ring[ring];
2070 qlcnic_disable_tx_intr(adapter, tx_ring);
2071 napi_synchronize(&tx_ring->napi);
2072 napi_disable(&tx_ring->napi);
2077 int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter,
2078 struct net_device *netdev)
2081 struct qlcnic_host_sds_ring *sds_ring;
2082 struct qlcnic_host_tx_ring *tx_ring;
2083 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2085 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
2088 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2089 sds_ring = &recv_ctx->sds_rings[ring];
2090 if (adapter->flags & QLCNIC_MSIX_ENABLED) {
2091 if (!(adapter->flags & QLCNIC_TX_INTR_SHARED))
2092 netif_napi_add(netdev, &sds_ring->napi,
2093 qlcnic_83xx_rx_poll,
2096 netif_napi_add(netdev, &sds_ring->napi,
2097 qlcnic_83xx_msix_sriov_vf_poll,
2101 netif_napi_add(netdev, &sds_ring->napi,
2107 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
2108 qlcnic_free_sds_rings(recv_ctx);
2112 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2113 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2114 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2115 tx_ring = &adapter->tx_ring[ring];
2116 netif_napi_add(netdev, &tx_ring->napi,
2117 qlcnic_83xx_msix_tx_poll,
2125 void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
2128 struct qlcnic_host_sds_ring *sds_ring;
2129 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2130 struct qlcnic_host_tx_ring *tx_ring;
2132 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2133 sds_ring = &recv_ctx->sds_rings[ring];
2134 netif_napi_del(&sds_ring->napi);
2137 qlcnic_free_sds_rings(adapter->recv_ctx);
2139 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2140 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2141 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2142 tx_ring = &adapter->tx_ring[ring];
2143 netif_napi_del(&tx_ring->napi);
2147 qlcnic_free_tx_rings(adapter);
2150 static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
2151 int ring, u64 sts_data[])
2153 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2154 struct sk_buff *skb;
2155 struct qlcnic_host_rds_ring *rds_ring;
2158 if (unlikely(ring >= adapter->max_rds_rings))
2161 rds_ring = &recv_ctx->rds_rings[ring];
2162 index = qlcnic_83xx_hndl(sts_data[0]);
2163 if (unlikely(index >= rds_ring->num_desc))
2166 length = qlcnic_83xx_pktln(sts_data[0]);
2168 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
2172 if (length > rds_ring->skb_size)
2173 skb_put(skb, rds_ring->skb_size);
2175 skb_put(skb, length);
2177 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
2178 adapter->ahw->diag_cnt++;
2180 dump_skb(skb, adapter);
2182 dev_kfree_skb_any(skb);
2186 void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
2188 struct qlcnic_adapter *adapter = sds_ring->adapter;
2189 struct status_desc *desc;
2192 u32 consumer = sds_ring->consumer;
2194 desc = &sds_ring->desc_head[consumer];
2195 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
2196 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
2197 opcode = qlcnic_83xx_opcode(sts_data[1]);
2201 ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0]));
2202 qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data);
2203 desc = &sds_ring->desc_head[consumer];
2204 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
2205 consumer = get_next_index(consumer, sds_ring->num_desc);
2206 sds_ring->consumer = consumer;
2207 writel(consumer, sds_ring->crb_sts_consumer);