1 // SPDX-License-Identifier: GPL-2.0-only
3 * QLogic qlcnic NIC Driver
4 * Copyright (c) 2009-2013 QLogic Corporation
7 #include <linux/netdevice.h>
8 #include <linux/if_vlan.h>
10 #include <linux/ipv6.h>
11 #include <net/checksum.h>
12 #include <linux/printk.h>
13 #include <linux/jiffies.h>
17 #define QLCNIC_TX_ETHER_PKT 0x01
18 #define QLCNIC_TX_TCP_PKT 0x02
19 #define QLCNIC_TX_UDP_PKT 0x03
20 #define QLCNIC_TX_IP_PKT 0x04
21 #define QLCNIC_TX_TCP_LSO 0x05
22 #define QLCNIC_TX_TCP_LSO6 0x06
23 #define QLCNIC_TX_ENCAP_PKT 0x07
24 #define QLCNIC_TX_ENCAP_LSO 0x08
25 #define QLCNIC_TX_TCPV6_PKT 0x0b
26 #define QLCNIC_TX_UDPV6_PKT 0x0c
28 #define QLCNIC_FLAGS_VLAN_TAGGED 0x10
29 #define QLCNIC_FLAGS_VLAN_OOB 0x40
31 #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
32 (cmd_desc)->vlan_TCI = cpu_to_le16(v);
33 #define qlcnic_set_cmd_desc_port(cmd_desc, var) \
34 ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
35 #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
36 ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
38 #define qlcnic_set_tx_port(_desc, _port) \
39 ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
41 #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
42 ((_desc)->flags_opcode |= \
43 cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
45 #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
46 ((_desc)->nfrags__length = \
47 cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
49 /* owner bits of status_desc */
50 #define STATUS_OWNER_HOST (0x1ULL << 56)
51 #define STATUS_OWNER_PHANTOM (0x2ULL << 56)
54 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
55 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
56 53-55 desc_cnt, 56-57 owner, 58-63 opcode
58 #define qlcnic_get_sts_port(sts_data) \
60 #define qlcnic_get_sts_status(sts_data) \
61 (((sts_data) >> 4) & 0x0F)
62 #define qlcnic_get_sts_type(sts_data) \
63 (((sts_data) >> 8) & 0x0F)
64 #define qlcnic_get_sts_totallength(sts_data) \
65 (((sts_data) >> 12) & 0xFFFF)
66 #define qlcnic_get_sts_refhandle(sts_data) \
67 (((sts_data) >> 28) & 0xFFFF)
68 #define qlcnic_get_sts_prot(sts_data) \
69 (((sts_data) >> 44) & 0x0F)
70 #define qlcnic_get_sts_pkt_offset(sts_data) \
71 (((sts_data) >> 48) & 0x1F)
72 #define qlcnic_get_sts_desc_cnt(sts_data) \
73 (((sts_data) >> 53) & 0x7)
74 #define qlcnic_get_sts_opcode(sts_data) \
75 (((sts_data) >> 58) & 0x03F)
77 #define qlcnic_get_lro_sts_refhandle(sts_data) \
78 ((sts_data) & 0x07FFF)
79 #define qlcnic_get_lro_sts_length(sts_data) \
80 (((sts_data) >> 16) & 0x0FFFF)
81 #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
82 (((sts_data) >> 32) & 0x0FF)
83 #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
84 (((sts_data) >> 40) & 0x0FF)
85 #define qlcnic_get_lro_sts_timestamp(sts_data) \
86 (((sts_data) >> 48) & 0x1)
87 #define qlcnic_get_lro_sts_type(sts_data) \
88 (((sts_data) >> 49) & 0x7)
89 #define qlcnic_get_lro_sts_push_flag(sts_data) \
90 (((sts_data) >> 52) & 0x1)
91 #define qlcnic_get_lro_sts_seq_number(sts_data) \
92 ((sts_data) & 0x0FFFFFFFF)
93 #define qlcnic_get_lro_sts_mss(sts_data1) \
94 ((sts_data1 >> 32) & 0x0FFFF)
96 #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff)
98 /* opcode field in status_desc */
99 #define QLCNIC_SYN_OFFLOAD 0x03
100 #define QLCNIC_RXPKT_DESC 0x04
101 #define QLCNIC_OLD_RXPKT_DESC 0x3f
102 #define QLCNIC_RESPONSE_DESC 0x05
103 #define QLCNIC_LRO_DESC 0x12
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,
271 u16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
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;
280 producer = tx_ring->producer;
281 hwdesc = &tx_ring->desc_head[tx_ring->producer];
283 req = (struct qlcnic_nic_req *)hwdesc;
284 memset(req, 0, sizeof(struct qlcnic_nic_req));
285 req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
287 word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
288 req->req_hdr = cpu_to_le64(word);
290 mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
291 mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
292 memcpy(mac_req->mac_addr, uaddr, ETH_ALEN);
294 vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
295 vlan_req->vlan_id = cpu_to_le16(vlan_id);
297 tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
301 static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
302 struct cmd_desc_type0 *first_desc,
304 struct qlcnic_host_tx_ring *tx_ring)
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 (skb_vlan_tag_present(skb)) {
324 vlan_id = skb_vlan_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 (time_is_before_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, tx_ring);
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, tag_vlan = 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);
476 } else if (skb_vlan_tag_present(skb)) {
477 flags = QLCNIC_FLAGS_VLAN_OOB;
478 vlan_tci = skb_vlan_tag_get(skb);
481 if (unlikely(adapter->tx_pvid)) {
482 if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
484 if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED))
487 flags = QLCNIC_FLAGS_VLAN_OOB;
488 vlan_tci = adapter->tx_pvid;
491 qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
492 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
494 if (*(skb->data) & BIT_0) {
496 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
498 opcode = QLCNIC_TX_ETHER_PKT;
499 if (skb_is_gso(skb)) {
500 hdr_len = skb_tcp_all_headers(skb);
501 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
502 first_desc->hdr_length = hdr_len;
503 opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 :
506 /* For LSO, we need to copy the MAC/IP/TCP headers into
507 * the descriptor ring */
511 if (flags & QLCNIC_FLAGS_VLAN_OOB) {
512 first_desc->hdr_length += VLAN_HLEN;
513 first_desc->tcp_hdr_offset = VLAN_HLEN;
514 first_desc->ip_hdr_offset = VLAN_HLEN;
516 /* Only in case of TSO on vlan device */
517 flags |= QLCNIC_FLAGS_VLAN_TAGGED;
519 /* Create a TSO vlan header template for firmware */
520 hwdesc = &tx_ring->desc_head[producer];
521 tx_ring->cmd_buf_arr[producer].skb = NULL;
523 copy_len = min((int)sizeof(struct cmd_desc_type0) -
524 offset, hdr_len + VLAN_HLEN);
526 vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
527 skb_copy_from_linear_data(skb, vh, 12);
528 vh->h_vlan_proto = htons(ETH_P_8021Q);
529 vh->h_vlan_TCI = htons(vlan_tci);
531 skb_copy_from_linear_data_offset(skb, 12,
534 copied = copy_len - VLAN_HLEN;
536 producer = get_next_index(producer, tx_ring->num_desc);
539 while (copied < hdr_len) {
540 size = (int)sizeof(struct cmd_desc_type0) - offset;
541 copy_len = min(size, (hdr_len - copied));
542 hwdesc = &tx_ring->desc_head[producer];
543 tx_ring->cmd_buf_arr[producer].skb = NULL;
544 skb_copy_from_linear_data_offset(skb, copied,
549 producer = get_next_index(producer, tx_ring->num_desc);
552 tx_ring->producer = producer;
554 adapter->stats.lso_frames++;
556 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
557 if (protocol == ETH_P_IP) {
558 l4proto = ip_hdr(skb)->protocol;
560 if (l4proto == IPPROTO_TCP)
561 opcode = QLCNIC_TX_TCP_PKT;
562 else if (l4proto == IPPROTO_UDP)
563 opcode = QLCNIC_TX_UDP_PKT;
564 } else if (protocol == ETH_P_IPV6) {
565 l4proto = ipv6_hdr(skb)->nexthdr;
567 if (l4proto == IPPROTO_TCP)
568 opcode = QLCNIC_TX_TCPV6_PKT;
569 else if (l4proto == IPPROTO_UDP)
570 opcode = QLCNIC_TX_UDPV6_PKT;
573 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
574 first_desc->ip_hdr_offset += skb_network_offset(skb);
575 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
580 static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
581 struct qlcnic_cmd_buffer *pbuf)
583 struct qlcnic_skb_frag *nf;
588 nr_frags = skb_shinfo(skb)->nr_frags;
589 nf = &pbuf->frag_array[0];
591 map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
593 if (dma_mapping_error(&pdev->dev, map))
597 nf->length = skb_headlen(skb);
599 for (i = 0; i < nr_frags; i++) {
600 frag = &skb_shinfo(skb)->frags[i];
601 nf = &pbuf->frag_array[i+1];
602 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
604 if (dma_mapping_error(&pdev->dev, map))
608 nf->length = skb_frag_size(frag);
615 nf = &pbuf->frag_array[i+1];
616 dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
619 nf = &pbuf->frag_array[0];
620 dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
626 static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
627 struct qlcnic_cmd_buffer *pbuf)
629 struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
630 int i, nr_frags = skb_shinfo(skb)->nr_frags;
632 for (i = 0; i < nr_frags; i++) {
633 nf = &pbuf->frag_array[i+1];
634 dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
637 nf = &pbuf->frag_array[0];
638 dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
642 static inline void qlcnic_clear_cmddesc(u64 *desc)
649 netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
651 struct qlcnic_adapter *adapter = netdev_priv(netdev);
652 struct qlcnic_host_tx_ring *tx_ring;
653 struct qlcnic_cmd_buffer *pbuf;
654 struct qlcnic_skb_frag *buffrag;
655 struct cmd_desc_type0 *hwdesc, *first_desc;
656 struct pci_dev *pdev;
658 int i, k, frag_count, delta = 0;
659 u32 producer, num_txd;
661 bool l4_is_udp = false;
663 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
664 netif_tx_stop_all_queues(netdev);
665 return NETDEV_TX_BUSY;
668 if (adapter->flags & QLCNIC_MACSPOOF) {
669 phdr = (struct ethhdr *)skb->data;
670 if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
674 tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)];
675 num_txd = tx_ring->num_desc;
677 frag_count = skb_shinfo(skb)->nr_frags + 1;
679 /* 14 frags supported for normal packet and
680 * 32 frags supported for TSO packet
682 if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
683 for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
684 delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
686 if (!__pskb_pull_tail(skb, delta))
689 frag_count = 1 + skb_shinfo(skb)->nr_frags;
692 if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
693 netif_tx_stop_queue(tx_ring->txq);
694 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
695 netif_tx_start_queue(tx_ring->txq);
697 tx_ring->tx_stats.xmit_off++;
698 return NETDEV_TX_BUSY;
702 producer = tx_ring->producer;
703 pbuf = &tx_ring->cmd_buf_arr[producer];
704 pdev = adapter->pdev;
705 first_desc = &tx_ring->desc_head[producer];
706 hwdesc = &tx_ring->desc_head[producer];
707 qlcnic_clear_cmddesc((u64 *)hwdesc);
709 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
710 adapter->stats.tx_dma_map_error++;
715 pbuf->frag_count = frag_count;
717 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
718 qlcnic_set_tx_port(first_desc, adapter->portnum);
720 for (i = 0; i < frag_count; i++) {
723 if ((k == 0) && (i > 0)) {
724 /* move to next desc.*/
725 producer = get_next_index(producer, num_txd);
726 hwdesc = &tx_ring->desc_head[producer];
727 qlcnic_clear_cmddesc((u64 *)hwdesc);
728 tx_ring->cmd_buf_arr[producer].skb = NULL;
731 buffrag = &pbuf->frag_array[i];
732 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
735 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
738 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
741 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
744 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
749 tx_ring->producer = get_next_index(producer, num_txd);
752 protocol = ntohs(skb->protocol);
753 if (protocol == ETH_P_IP)
754 l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP;
755 else if (protocol == ETH_P_IPV6)
756 l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP;
758 /* Check if it is a VXLAN packet */
759 if (!skb->encapsulation || !l4_is_udp ||
760 !qlcnic_encap_tx_offload(adapter)) {
761 if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb,
765 if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc,
770 if (adapter->drv_mac_learn)
771 qlcnic_send_filter(adapter, first_desc, skb, tx_ring);
773 tx_ring->tx_stats.tx_bytes += skb->len;
774 tx_ring->tx_stats.xmit_called++;
776 /* Ensure writes are complete before HW fetches Tx descriptors */
778 qlcnic_update_cmd_producer(tx_ring);
783 qlcnic_unmap_buffers(pdev, skb, pbuf);
785 adapter->stats.txdropped++;
786 dev_kfree_skb_any(skb);
790 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
792 struct net_device *netdev = adapter->netdev;
794 if (adapter->ahw->linkup && !linkup) {
795 netdev_info(netdev, "NIC Link is down\n");
796 adapter->ahw->linkup = 0;
797 netif_carrier_off(netdev);
798 } else if (!adapter->ahw->linkup && linkup) {
799 adapter->ahw->linkup = 1;
801 /* Do not advertise Link up to the stack if device
802 * is in loopback mode
804 if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) {
805 netdev_info(netdev, "NIC Link is up for loopback test\n");
809 netdev_info(netdev, "NIC Link is up\n");
810 netif_carrier_on(netdev);
814 static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
815 struct qlcnic_host_rds_ring *rds_ring,
816 struct qlcnic_rx_buffer *buffer)
820 struct pci_dev *pdev = adapter->pdev;
822 skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
824 adapter->stats.skb_alloc_failure++;
828 skb_reserve(skb, NET_IP_ALIGN);
829 dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size,
832 if (dma_mapping_error(&pdev->dev, dma)) {
833 adapter->stats.rx_dma_map_error++;
834 dev_kfree_skb_any(skb);
844 static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
845 struct qlcnic_host_rds_ring *rds_ring,
848 struct rcv_desc *pdesc;
849 struct qlcnic_rx_buffer *buffer;
851 uint32_t producer, handle;
852 struct list_head *head;
854 if (!spin_trylock(&rds_ring->lock))
857 producer = rds_ring->producer;
858 head = &rds_ring->free_list;
859 while (!list_empty(head)) {
860 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
863 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
867 list_del(&buffer->list);
869 /* make a rcv descriptor */
870 pdesc = &rds_ring->desc_head[producer];
871 handle = qlcnic_get_ref_handle(adapter,
872 buffer->ref_handle, ring_id);
873 pdesc->reference_handle = cpu_to_le16(handle);
874 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
875 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
876 producer = get_next_index(producer, rds_ring->num_desc);
879 rds_ring->producer = producer;
880 writel((producer - 1) & (rds_ring->num_desc - 1),
881 rds_ring->crb_rcv_producer);
883 spin_unlock(&rds_ring->lock);
886 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
887 struct qlcnic_host_tx_ring *tx_ring,
890 u32 sw_consumer, hw_consumer;
891 int i, done, count = 0;
892 struct qlcnic_cmd_buffer *buffer;
893 struct pci_dev *pdev = adapter->pdev;
894 struct net_device *netdev = adapter->netdev;
895 struct qlcnic_skb_frag *frag;
897 if (!spin_trylock(&tx_ring->tx_clean_lock))
900 sw_consumer = tx_ring->sw_consumer;
901 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
903 while (sw_consumer != hw_consumer) {
904 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
906 frag = &buffer->frag_array[0];
907 dma_unmap_single(&pdev->dev, frag->dma, frag->length,
910 for (i = 1; i < buffer->frag_count; i++) {
912 dma_unmap_page(&pdev->dev, frag->dma,
913 frag->length, DMA_TO_DEVICE);
916 tx_ring->tx_stats.xmit_finished++;
917 dev_kfree_skb_any(buffer->skb);
921 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
922 if (++count >= budget)
926 tx_ring->sw_consumer = sw_consumer;
928 if (count && netif_running(netdev)) {
930 if (netif_tx_queue_stopped(tx_ring->txq) &&
931 netif_carrier_ok(netdev)) {
932 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
933 netif_tx_wake_queue(tx_ring->txq);
934 tx_ring->tx_stats.xmit_on++;
937 adapter->tx_timeo_cnt = 0;
940 * If everything is freed up to consumer then check if the ring is full
941 * If the ring is full then check if more needs to be freed and
942 * schedule the call back again.
944 * This happens when there are 2 CPUs. One could be freeing and the
945 * other filling it. If the ring is full when we get out of here and
946 * the card has already interrupted the host then the host can miss the
949 * There is still a possible race condition and the host could miss an
950 * interrupt. The card has to take care of this.
952 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
953 done = (sw_consumer == hw_consumer);
955 spin_unlock(&tx_ring->tx_clean_lock);
960 static int qlcnic_poll(struct napi_struct *napi, int budget)
962 int tx_complete, work_done;
963 struct qlcnic_host_sds_ring *sds_ring;
964 struct qlcnic_adapter *adapter;
965 struct qlcnic_host_tx_ring *tx_ring;
967 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
968 adapter = sds_ring->adapter;
969 tx_ring = sds_ring->tx_ring;
971 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring,
973 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
975 /* Check if we need a repoll */
979 if (work_done < budget) {
980 napi_complete_done(&sds_ring->napi, work_done);
981 if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
982 qlcnic_enable_sds_intr(adapter, sds_ring);
983 qlcnic_enable_tx_intr(adapter, tx_ring);
990 static int qlcnic_tx_poll(struct napi_struct *napi, int budget)
992 struct qlcnic_host_tx_ring *tx_ring;
993 struct qlcnic_adapter *adapter;
996 tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
997 adapter = tx_ring->adapter;
999 work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1001 napi_complete(&tx_ring->napi);
1002 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1003 qlcnic_enable_tx_intr(adapter, tx_ring);
1005 /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/
1012 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
1014 struct qlcnic_host_sds_ring *sds_ring;
1015 struct qlcnic_adapter *adapter;
1018 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1019 adapter = sds_ring->adapter;
1021 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1023 if (work_done < budget) {
1024 napi_complete_done(&sds_ring->napi, work_done);
1025 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1026 qlcnic_enable_sds_intr(adapter, sds_ring);
1032 static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1033 struct qlcnic_fw_msg *msg)
1036 u16 cable_len, link_speed;
1037 u8 link_status, module, duplex, autoneg, lb_status = 0;
1038 struct net_device *netdev = adapter->netdev;
1040 adapter->ahw->has_link_events = 1;
1042 cable_OUI = msg->body[1] & 0xffffffff;
1043 cable_len = (msg->body[1] >> 32) & 0xffff;
1044 link_speed = (msg->body[1] >> 48) & 0xffff;
1046 link_status = msg->body[2] & 0xff;
1047 duplex = (msg->body[2] >> 16) & 0xff;
1048 autoneg = (msg->body[2] >> 24) & 0xff;
1049 lb_status = (msg->body[2] >> 32) & 0x3;
1051 module = (msg->body[2] >> 8) & 0xff;
1052 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1053 dev_info(&netdev->dev,
1054 "unsupported cable: OUI 0x%x, length %d\n",
1055 cable_OUI, cable_len);
1056 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1057 dev_info(&netdev->dev, "unsupported cable length %d\n",
1060 if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
1061 lb_status == QLCNIC_ELB_MODE))
1062 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
1064 qlcnic_advert_link_change(adapter, link_status);
1066 if (duplex == LINKEVENT_FULL_DUPLEX)
1067 adapter->ahw->link_duplex = DUPLEX_FULL;
1069 adapter->ahw->link_duplex = DUPLEX_HALF;
1071 adapter->ahw->module_type = module;
1072 adapter->ahw->link_autoneg = autoneg;
1075 adapter->ahw->link_speed = link_speed;
1077 adapter->ahw->link_speed = SPEED_UNKNOWN;
1078 adapter->ahw->link_duplex = DUPLEX_UNKNOWN;
1082 static void qlcnic_handle_fw_message(int desc_cnt, int index,
1083 struct qlcnic_host_sds_ring *sds_ring)
1085 struct qlcnic_fw_msg msg;
1086 struct status_desc *desc;
1087 struct qlcnic_adapter *adapter;
1089 int i = 0, opcode, ret;
1091 while (desc_cnt > 0 && i < 8) {
1092 desc = &sds_ring->desc_head[index];
1093 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1094 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1096 index = get_next_index(index, sds_ring->num_desc);
1100 adapter = sds_ring->adapter;
1101 dev = &adapter->pdev->dev;
1102 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1105 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1106 qlcnic_handle_linkevent(adapter, &msg);
1108 case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
1109 ret = (u32)(msg.body[1]);
1112 adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
1115 dev_info(dev, "loopback already in progress\n");
1116 adapter->ahw->diag_cnt = -EINPROGRESS;
1119 dev_info(dev, "loopback cable is not connected\n");
1120 adapter->ahw->diag_cnt = -ENODEV;
1124 "loopback configure request failed, err %x\n",
1126 adapter->ahw->diag_cnt = -EIO;
1130 case QLCNIC_C2H_OPCODE_GET_DCB_AEN:
1131 qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg);
1138 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1139 struct qlcnic_host_rds_ring *ring,
1140 u16 index, u16 cksum)
1142 struct qlcnic_rx_buffer *buffer;
1143 struct sk_buff *skb;
1145 buffer = &ring->rx_buf_arr[index];
1146 if (unlikely(buffer->skb == NULL)) {
1151 dma_unmap_single(&adapter->pdev->dev, buffer->dma, ring->dma_size,
1155 if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
1156 (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
1157 adapter->stats.csummed++;
1158 skb->ip_summed = CHECKSUM_UNNECESSARY;
1160 skb_checksum_none_assert(skb);
1169 static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
1170 struct sk_buff *skb, u16 *vlan_tag)
1172 struct ethhdr *eth_hdr;
1174 if (!__vlan_get_tag(skb, vlan_tag)) {
1175 eth_hdr = (struct ethhdr *)skb->data;
1176 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
1177 skb_pull(skb, VLAN_HLEN);
1179 if (!adapter->rx_pvid)
1182 if (*vlan_tag == adapter->rx_pvid) {
1183 /* Outer vlan tag. Packet should follow non-vlan path */
1187 if (adapter->flags & QLCNIC_TAGGING_ENABLED)
1193 static struct qlcnic_rx_buffer *
1194 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1195 struct qlcnic_host_sds_ring *sds_ring, int ring,
1198 struct net_device *netdev = adapter->netdev;
1199 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1200 struct qlcnic_rx_buffer *buffer;
1201 struct sk_buff *skb;
1202 struct qlcnic_host_rds_ring *rds_ring;
1203 int index, length, cksum, pkt_offset, is_lb_pkt;
1204 u16 vid = 0xffff, t_vid;
1206 if (unlikely(ring >= adapter->max_rds_rings))
1209 rds_ring = &recv_ctx->rds_rings[ring];
1211 index = qlcnic_get_sts_refhandle(sts_data0);
1212 if (unlikely(index >= rds_ring->num_desc))
1215 buffer = &rds_ring->rx_buf_arr[index];
1216 length = qlcnic_get_sts_totallength(sts_data0);
1217 cksum = qlcnic_get_sts_status(sts_data0);
1218 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1220 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1224 if (adapter->rx_mac_learn) {
1226 is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1227 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1230 if (length > rds_ring->skb_size)
1231 skb_put(skb, rds_ring->skb_size);
1233 skb_put(skb, length);
1236 skb_pull(skb, pkt_offset);
1238 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1239 adapter->stats.rxdropped++;
1244 skb->protocol = eth_type_trans(skb, netdev);
1247 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1249 napi_gro_receive(&sds_ring->napi, skb);
1251 adapter->stats.rx_pkts++;
1252 adapter->stats.rxbytes += length;
1257 #define QLC_TCP_HDR_SIZE 20
1258 #define QLC_TCP_TS_OPTION_SIZE 12
1259 #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1261 static struct qlcnic_rx_buffer *
1262 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1263 int ring, u64 sts_data0, u64 sts_data1)
1265 struct net_device *netdev = adapter->netdev;
1266 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1267 struct qlcnic_rx_buffer *buffer;
1268 struct sk_buff *skb;
1269 struct qlcnic_host_rds_ring *rds_ring;
1271 struct ipv6hdr *ipv6h;
1273 bool push, timestamp;
1274 int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt;
1275 u16 lro_length, length, data_offset, t_vid, vid = 0xffff;
1278 if (unlikely(ring >= adapter->max_rds_rings))
1281 rds_ring = &recv_ctx->rds_rings[ring];
1283 index = qlcnic_get_lro_sts_refhandle(sts_data0);
1284 if (unlikely(index >= rds_ring->num_desc))
1287 buffer = &rds_ring->rx_buf_arr[index];
1289 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1290 lro_length = qlcnic_get_lro_sts_length(sts_data0);
1291 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1292 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1293 push = qlcnic_get_lro_sts_push_flag(sts_data0);
1294 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1296 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1300 if (adapter->rx_mac_learn) {
1302 is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1303 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1307 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1309 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1311 skb_put(skb, lro_length + data_offset);
1312 skb_pull(skb, l2_hdr_offset);
1314 if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1315 adapter->stats.rxdropped++;
1320 skb->protocol = eth_type_trans(skb, netdev);
1322 if (ntohs(skb->protocol) == ETH_P_IPV6) {
1323 ipv6h = (struct ipv6hdr *)skb->data;
1324 th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1325 length = (th->doff << 2) + lro_length;
1326 ipv6h->payload_len = htons(length);
1328 iph = (struct iphdr *)skb->data;
1329 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1330 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1331 csum_replace2(&iph->check, iph->tot_len, htons(length));
1332 iph->tot_len = htons(length);
1336 th->seq = htonl(seq_number);
1339 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1340 skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
1341 if (skb->protocol == htons(ETH_P_IPV6))
1342 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1344 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1348 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1349 netif_receive_skb(skb);
1351 adapter->stats.lro_pkts++;
1352 adapter->stats.lrobytes += length;
1357 static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1359 struct qlcnic_host_rds_ring *rds_ring;
1360 struct qlcnic_adapter *adapter = sds_ring->adapter;
1361 struct list_head *cur;
1362 struct status_desc *desc;
1363 struct qlcnic_rx_buffer *rxbuf;
1364 int opcode, desc_cnt, count = 0;
1365 u64 sts_data0, sts_data1;
1367 u32 consumer = sds_ring->consumer;
1369 while (count < max) {
1370 desc = &sds_ring->desc_head[consumer];
1371 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1373 if (!(sts_data0 & STATUS_OWNER_HOST))
1376 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1377 opcode = qlcnic_get_sts_opcode(sts_data0);
1379 case QLCNIC_RXPKT_DESC:
1380 case QLCNIC_OLD_RXPKT_DESC:
1381 case QLCNIC_SYN_OFFLOAD:
1382 ring = qlcnic_get_sts_type(sts_data0);
1383 rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring,
1386 case QLCNIC_LRO_DESC:
1387 ring = qlcnic_get_lro_sts_type(sts_data0);
1388 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1389 rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1392 case QLCNIC_RESPONSE_DESC:
1393 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1398 WARN_ON(desc_cnt > 1);
1401 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1403 adapter->stats.null_rxbuf++;
1405 for (; desc_cnt > 0; desc_cnt--) {
1406 desc = &sds_ring->desc_head[consumer];
1407 desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW;
1408 consumer = get_next_index(consumer, sds_ring->num_desc);
1413 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1414 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1415 if (!list_empty(&sds_ring->free_list[ring])) {
1416 list_for_each(cur, &sds_ring->free_list[ring]) {
1417 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1419 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1421 spin_lock(&rds_ring->lock);
1422 list_splice_tail_init(&sds_ring->free_list[ring],
1423 &rds_ring->free_list);
1424 spin_unlock(&rds_ring->lock);
1427 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1431 sds_ring->consumer = consumer;
1432 writel(consumer, sds_ring->crb_sts_consumer);
1438 void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1439 struct qlcnic_host_rds_ring *rds_ring, u8 ring_id)
1441 struct rcv_desc *pdesc;
1442 struct qlcnic_rx_buffer *buffer;
1444 u32 producer, handle;
1445 struct list_head *head;
1447 producer = rds_ring->producer;
1448 head = &rds_ring->free_list;
1450 while (!list_empty(head)) {
1452 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1455 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1460 list_del(&buffer->list);
1462 /* make a rcv descriptor */
1463 pdesc = &rds_ring->desc_head[producer];
1464 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1465 handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle,
1467 pdesc->reference_handle = cpu_to_le16(handle);
1468 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1469 producer = get_next_index(producer, rds_ring->num_desc);
1473 rds_ring->producer = producer;
1474 writel((producer-1) & (rds_ring->num_desc-1),
1475 rds_ring->crb_rcv_producer);
1479 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1481 if (adapter->ahw->msg_enable & NETIF_MSG_DRV) {
1484 scnprintf(prefix, sizeof(prefix), "%s: %s: ",
1485 dev_name(&adapter->pdev->dev), __func__);
1487 print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1,
1488 skb->data, skb->len, true);
1492 static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
1495 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1496 struct sk_buff *skb;
1497 struct qlcnic_host_rds_ring *rds_ring;
1498 int index, length, cksum, pkt_offset;
1500 if (unlikely(ring >= adapter->max_rds_rings))
1503 rds_ring = &recv_ctx->rds_rings[ring];
1505 index = qlcnic_get_sts_refhandle(sts_data0);
1506 length = qlcnic_get_sts_totallength(sts_data0);
1507 if (unlikely(index >= rds_ring->num_desc))
1510 cksum = qlcnic_get_sts_status(sts_data0);
1511 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1513 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1517 if (length > rds_ring->skb_size)
1518 skb_put(skb, rds_ring->skb_size);
1520 skb_put(skb, length);
1523 skb_pull(skb, pkt_offset);
1525 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1526 adapter->ahw->diag_cnt++;
1528 dump_skb(skb, adapter);
1530 dev_kfree_skb_any(skb);
1531 adapter->stats.rx_pkts++;
1532 adapter->stats.rxbytes += length;
1537 void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1539 struct qlcnic_adapter *adapter = sds_ring->adapter;
1540 struct status_desc *desc;
1542 int ring, opcode, desc_cnt;
1544 u32 consumer = sds_ring->consumer;
1546 desc = &sds_ring->desc_head[consumer];
1547 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1549 if (!(sts_data0 & STATUS_OWNER_HOST))
1552 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1553 opcode = qlcnic_get_sts_opcode(sts_data0);
1555 case QLCNIC_RESPONSE_DESC:
1556 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1559 ring = qlcnic_get_sts_type(sts_data0);
1560 qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1564 for (; desc_cnt > 0; desc_cnt--) {
1565 desc = &sds_ring->desc_head[consumer];
1566 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1567 consumer = get_next_index(consumer, sds_ring->num_desc);
1570 sds_ring->consumer = consumer;
1571 writel(consumer, sds_ring->crb_sts_consumer);
1574 int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
1575 struct net_device *netdev)
1578 struct qlcnic_host_sds_ring *sds_ring;
1579 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1580 struct qlcnic_host_tx_ring *tx_ring;
1582 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
1585 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1586 sds_ring = &recv_ctx->sds_rings[ring];
1587 if (qlcnic_check_multi_tx(adapter) &&
1588 !adapter->ahw->diag_test) {
1589 netif_napi_add(netdev, &sds_ring->napi,
1592 if (ring == (adapter->drv_sds_rings - 1))
1593 netif_napi_add(netdev, &sds_ring->napi,
1596 netif_napi_add(netdev, &sds_ring->napi,
1601 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
1602 qlcnic_free_sds_rings(recv_ctx);
1606 if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1607 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1608 tx_ring = &adapter->tx_ring[ring];
1609 netif_napi_add_tx(netdev, &tx_ring->napi,
1617 void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter)
1620 struct qlcnic_host_sds_ring *sds_ring;
1621 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1622 struct qlcnic_host_tx_ring *tx_ring;
1624 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1625 sds_ring = &recv_ctx->sds_rings[ring];
1626 netif_napi_del(&sds_ring->napi);
1629 qlcnic_free_sds_rings(adapter->recv_ctx);
1631 if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1632 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1633 tx_ring = &adapter->tx_ring[ring];
1634 netif_napi_del(&tx_ring->napi);
1638 qlcnic_free_tx_rings(adapter);
1641 void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter)
1644 struct qlcnic_host_sds_ring *sds_ring;
1645 struct qlcnic_host_tx_ring *tx_ring;
1646 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1648 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1651 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1652 sds_ring = &recv_ctx->sds_rings[ring];
1653 napi_enable(&sds_ring->napi);
1654 qlcnic_enable_sds_intr(adapter, sds_ring);
1657 if (qlcnic_check_multi_tx(adapter) &&
1658 (adapter->flags & QLCNIC_MSIX_ENABLED) &&
1659 !adapter->ahw->diag_test) {
1660 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1661 tx_ring = &adapter->tx_ring[ring];
1662 napi_enable(&tx_ring->napi);
1663 qlcnic_enable_tx_intr(adapter, tx_ring);
1668 void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
1671 struct qlcnic_host_sds_ring *sds_ring;
1672 struct qlcnic_host_tx_ring *tx_ring;
1673 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1675 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1678 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1679 sds_ring = &recv_ctx->sds_rings[ring];
1680 qlcnic_disable_sds_intr(adapter, sds_ring);
1681 napi_synchronize(&sds_ring->napi);
1682 napi_disable(&sds_ring->napi);
1685 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
1686 !adapter->ahw->diag_test &&
1687 qlcnic_check_multi_tx(adapter)) {
1688 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1689 tx_ring = &adapter->tx_ring[ring];
1690 qlcnic_disable_tx_intr(adapter, tx_ring);
1691 napi_synchronize(&tx_ring->napi);
1692 napi_disable(&tx_ring->napi);
1697 #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36)
1698 #define QLC_83XX_LRO_LB_PKT (1ULL << 46)
1700 static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt)
1703 return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0;
1705 return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0;
1708 #define QLCNIC_ENCAP_LENGTH_MASK 0x7f
1710 static inline u8 qlcnic_encap_length(u64 sts_data)
1712 return sts_data & QLCNIC_ENCAP_LENGTH_MASK;
1715 static struct qlcnic_rx_buffer *
1716 qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
1717 struct qlcnic_host_sds_ring *sds_ring,
1718 u8 ring, u64 sts_data[])
1720 struct net_device *netdev = adapter->netdev;
1721 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1722 struct qlcnic_rx_buffer *buffer;
1723 struct sk_buff *skb;
1724 struct qlcnic_host_rds_ring *rds_ring;
1725 int index, length, cksum, is_lb_pkt;
1729 if (unlikely(ring >= adapter->max_rds_rings))
1732 rds_ring = &recv_ctx->rds_rings[ring];
1734 index = qlcnic_83xx_hndl(sts_data[0]);
1735 if (unlikely(index >= rds_ring->num_desc))
1738 buffer = &rds_ring->rx_buf_arr[index];
1739 length = qlcnic_83xx_pktln(sts_data[0]);
1740 cksum = qlcnic_83xx_csum_status(sts_data[1]);
1741 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1745 if (length > rds_ring->skb_size)
1746 skb_put(skb, rds_ring->skb_size);
1748 skb_put(skb, length);
1750 err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1752 if (adapter->rx_mac_learn) {
1753 is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0);
1754 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1757 if (unlikely(err)) {
1758 adapter->stats.rxdropped++;
1763 skb->protocol = eth_type_trans(skb, netdev);
1765 if (qlcnic_encap_length(sts_data[1]) &&
1766 skb->ip_summed == CHECKSUM_UNNECESSARY) {
1767 skb->csum_level = 1;
1768 adapter->stats.encap_rx_csummed++;
1772 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1774 napi_gro_receive(&sds_ring->napi, skb);
1776 adapter->stats.rx_pkts++;
1777 adapter->stats.rxbytes += length;
1782 static struct qlcnic_rx_buffer *
1783 qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
1784 u8 ring, u64 sts_data[])
1786 struct net_device *netdev = adapter->netdev;
1787 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1788 struct qlcnic_rx_buffer *buffer;
1789 struct sk_buff *skb;
1790 struct qlcnic_host_rds_ring *rds_ring;
1792 struct ipv6hdr *ipv6h;
1795 int l2_hdr_offset, l4_hdr_offset;
1796 int index, is_lb_pkt;
1797 u16 lro_length, length, data_offset, gso_size;
1801 if (unlikely(ring >= adapter->max_rds_rings))
1804 rds_ring = &recv_ctx->rds_rings[ring];
1806 index = qlcnic_83xx_hndl(sts_data[0]);
1807 if (unlikely(index >= rds_ring->num_desc))
1810 buffer = &rds_ring->rx_buf_arr[index];
1812 lro_length = qlcnic_83xx_lro_pktln(sts_data[0]);
1813 l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]);
1814 l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]);
1815 push = qlcnic_83xx_is_psh_bit(sts_data[1]);
1817 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1821 if (qlcnic_83xx_is_tstamp(sts_data[1]))
1822 data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE;
1824 data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE;
1826 skb_put(skb, lro_length + data_offset);
1827 skb_pull(skb, l2_hdr_offset);
1829 err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1831 if (adapter->rx_mac_learn) {
1832 is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1);
1833 qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1836 if (unlikely(err)) {
1837 adapter->stats.rxdropped++;
1842 skb->protocol = eth_type_trans(skb, netdev);
1843 if (ntohs(skb->protocol) == ETH_P_IPV6) {
1844 ipv6h = (struct ipv6hdr *)skb->data;
1845 th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1847 length = (th->doff << 2) + lro_length;
1848 ipv6h->payload_len = htons(length);
1850 iph = (struct iphdr *)skb->data;
1851 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1852 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1853 csum_replace2(&iph->check, iph->tot_len, htons(length));
1854 iph->tot_len = htons(length);
1860 if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1861 gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]);
1862 skb_shinfo(skb)->gso_size = gso_size;
1863 if (skb->protocol == htons(ETH_P_IPV6))
1864 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1866 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1870 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1872 netif_receive_skb(skb);
1874 adapter->stats.lro_pkts++;
1875 adapter->stats.lrobytes += length;
1879 static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
1882 struct qlcnic_host_rds_ring *rds_ring;
1883 struct qlcnic_adapter *adapter = sds_ring->adapter;
1884 struct list_head *cur;
1885 struct status_desc *desc;
1886 struct qlcnic_rx_buffer *rxbuf = NULL;
1889 int count = 0, opcode;
1890 u32 consumer = sds_ring->consumer;
1892 while (count < max) {
1893 desc = &sds_ring->desc_head[consumer];
1894 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
1895 opcode = qlcnic_83xx_opcode(sts_data[1]);
1898 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
1899 ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
1902 case QLC_83XX_REG_DESC:
1903 rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring,
1906 case QLC_83XX_LRO_DESC:
1907 rxbuf = qlcnic_83xx_process_lro(adapter, ring,
1911 dev_info(&adapter->pdev->dev,
1912 "Unknown opcode: 0x%x\n", opcode);
1917 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1919 adapter->stats.null_rxbuf++;
1921 desc = &sds_ring->desc_head[consumer];
1922 /* Reset the descriptor */
1923 desc->status_desc_data[1] = 0;
1924 consumer = get_next_index(consumer, sds_ring->num_desc);
1927 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1928 rds_ring = &adapter->recv_ctx->rds_rings[ring];
1929 if (!list_empty(&sds_ring->free_list[ring])) {
1930 list_for_each(cur, &sds_ring->free_list[ring]) {
1931 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1933 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1935 spin_lock(&rds_ring->lock);
1936 list_splice_tail_init(&sds_ring->free_list[ring],
1937 &rds_ring->free_list);
1938 spin_unlock(&rds_ring->lock);
1940 qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1943 sds_ring->consumer = consumer;
1944 writel(consumer, sds_ring->crb_sts_consumer);
1949 static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget)
1953 struct qlcnic_host_sds_ring *sds_ring;
1954 struct qlcnic_adapter *adapter;
1955 struct qlcnic_host_tx_ring *tx_ring;
1957 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1958 adapter = sds_ring->adapter;
1959 /* tx ring count = 1 */
1960 tx_ring = adapter->tx_ring;
1962 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1963 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1965 /* Check if we need a repoll */
1969 if (work_done < budget) {
1970 napi_complete_done(&sds_ring->napi, work_done);
1971 qlcnic_enable_sds_intr(adapter, sds_ring);
1977 static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
1981 struct qlcnic_host_sds_ring *sds_ring;
1982 struct qlcnic_adapter *adapter;
1983 struct qlcnic_host_tx_ring *tx_ring;
1985 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1986 adapter = sds_ring->adapter;
1987 /* tx ring count = 1 */
1988 tx_ring = adapter->tx_ring;
1990 tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1991 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1993 /* Check if we need a repoll */
1997 if (work_done < budget) {
1998 napi_complete_done(&sds_ring->napi, work_done);
1999 qlcnic_enable_sds_intr(adapter, sds_ring);
2005 static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget)
2008 struct qlcnic_host_tx_ring *tx_ring;
2009 struct qlcnic_adapter *adapter;
2011 tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
2012 adapter = tx_ring->adapter;
2013 work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
2015 napi_complete(&tx_ring->napi);
2016 if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
2017 qlcnic_enable_tx_intr(adapter, tx_ring);
2026 static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget)
2029 struct qlcnic_host_sds_ring *sds_ring;
2030 struct qlcnic_adapter *adapter;
2032 sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
2033 adapter = sds_ring->adapter;
2034 work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
2035 if (work_done < budget) {
2036 napi_complete_done(&sds_ring->napi, work_done);
2037 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2038 qlcnic_enable_sds_intr(adapter, sds_ring);
2044 void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
2047 struct qlcnic_host_sds_ring *sds_ring;
2048 struct qlcnic_host_tx_ring *tx_ring;
2049 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2051 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2054 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2055 sds_ring = &recv_ctx->sds_rings[ring];
2056 napi_enable(&sds_ring->napi);
2057 if (adapter->flags & QLCNIC_MSIX_ENABLED)
2058 qlcnic_enable_sds_intr(adapter, sds_ring);
2061 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2062 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2063 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2064 tx_ring = &adapter->tx_ring[ring];
2065 napi_enable(&tx_ring->napi);
2066 qlcnic_enable_tx_intr(adapter, tx_ring);
2071 void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
2074 struct qlcnic_host_sds_ring *sds_ring;
2075 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2076 struct qlcnic_host_tx_ring *tx_ring;
2078 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2081 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2082 sds_ring = &recv_ctx->sds_rings[ring];
2083 if (adapter->flags & QLCNIC_MSIX_ENABLED)
2084 qlcnic_disable_sds_intr(adapter, sds_ring);
2085 napi_synchronize(&sds_ring->napi);
2086 napi_disable(&sds_ring->napi);
2089 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2090 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2091 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2092 tx_ring = &adapter->tx_ring[ring];
2093 qlcnic_disable_tx_intr(adapter, tx_ring);
2094 napi_synchronize(&tx_ring->napi);
2095 napi_disable(&tx_ring->napi);
2100 int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter,
2101 struct net_device *netdev)
2104 struct qlcnic_host_sds_ring *sds_ring;
2105 struct qlcnic_host_tx_ring *tx_ring;
2106 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2108 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
2111 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2112 sds_ring = &recv_ctx->sds_rings[ring];
2113 if (adapter->flags & QLCNIC_MSIX_ENABLED) {
2114 if (!(adapter->flags & QLCNIC_TX_INTR_SHARED))
2115 netif_napi_add(netdev, &sds_ring->napi,
2116 qlcnic_83xx_rx_poll);
2118 netif_napi_add(netdev, &sds_ring->napi,
2119 qlcnic_83xx_msix_sriov_vf_poll);
2122 netif_napi_add(netdev, &sds_ring->napi,
2127 if (qlcnic_alloc_tx_rings(adapter, netdev)) {
2128 qlcnic_free_sds_rings(recv_ctx);
2132 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2133 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2134 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2135 tx_ring = &adapter->tx_ring[ring];
2136 netif_napi_add_tx(netdev, &tx_ring->napi,
2137 qlcnic_83xx_msix_tx_poll);
2144 void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
2147 struct qlcnic_host_sds_ring *sds_ring;
2148 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2149 struct qlcnic_host_tx_ring *tx_ring;
2151 for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2152 sds_ring = &recv_ctx->sds_rings[ring];
2153 netif_napi_del(&sds_ring->napi);
2156 qlcnic_free_sds_rings(adapter->recv_ctx);
2158 if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2159 !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2160 for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2161 tx_ring = &adapter->tx_ring[ring];
2162 netif_napi_del(&tx_ring->napi);
2166 qlcnic_free_tx_rings(adapter);
2169 static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
2170 int ring, u64 sts_data[])
2172 struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2173 struct sk_buff *skb;
2174 struct qlcnic_host_rds_ring *rds_ring;
2177 if (unlikely(ring >= adapter->max_rds_rings))
2180 rds_ring = &recv_ctx->rds_rings[ring];
2181 index = qlcnic_83xx_hndl(sts_data[0]);
2182 if (unlikely(index >= rds_ring->num_desc))
2185 length = qlcnic_83xx_pktln(sts_data[0]);
2187 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
2191 if (length > rds_ring->skb_size)
2192 skb_put(skb, rds_ring->skb_size);
2194 skb_put(skb, length);
2196 if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
2197 adapter->ahw->diag_cnt++;
2199 dump_skb(skb, adapter);
2201 dev_kfree_skb_any(skb);
2205 void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
2207 struct qlcnic_adapter *adapter = sds_ring->adapter;
2208 struct status_desc *desc;
2211 u32 consumer = sds_ring->consumer;
2213 desc = &sds_ring->desc_head[consumer];
2214 sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
2215 sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
2216 opcode = qlcnic_83xx_opcode(sts_data[1]);
2220 ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
2221 qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data);
2222 desc = &sds_ring->desc_head[consumer];
2223 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
2224 consumer = get_next_index(consumer, sds_ring->num_desc);
2225 sds_ring->consumer = consumer;
2226 writel(consumer, sds_ring->crb_sts_consumer);