1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * QLogic qlcnic NIC Driver |
4 | * Copyright (c) 2009-2013 QLogic Corporation |
5 | */ |
6 | |
7 | #include <linux/netdevice.h> |
8 | #include <linux/if_vlan.h> |
9 | #include <net/ip.h> |
10 | #include <linux/ipv6.h> |
11 | #include <net/checksum.h> |
12 | #include <linux/printk.h> |
13 | #include <linux/jiffies.h> |
14 | |
15 | #include "qlcnic.h" |
16 | |
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 |
27 | |
28 | #define QLCNIC_FLAGS_VLAN_TAGGED 0x10 |
29 | #define QLCNIC_FLAGS_VLAN_OOB 0x40 |
30 | |
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)) |
37 | |
38 | #define qlcnic_set_tx_port(_desc, _port) \ |
39 | ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0)) |
40 | |
41 | #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \ |
42 | ((_desc)->flags_opcode |= \ |
43 | cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7))) |
44 | |
45 | #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \ |
46 | ((_desc)->nfrags__length = \ |
47 | cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8))) |
48 | |
49 | /* owner bits of status_desc */ |
50 | #define STATUS_OWNER_HOST (0x1ULL << 56) |
51 | #define STATUS_OWNER_PHANTOM (0x2ULL << 56) |
52 | |
53 | /* Status descriptor: |
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 |
57 | */ |
58 | #define qlcnic_get_sts_port(sts_data) \ |
59 | ((sts_data) & 0x0F) |
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) |
76 | |
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) |
95 | |
96 | #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff) |
97 | |
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 |
104 | |
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) |
109 | |
110 | #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE) |
111 | |
112 | /* for status field in status_desc */ |
113 | #define STATUS_CKSUM_LOOP 0 |
114 | #define STATUS_CKSUM_OK 2 |
115 | |
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) |
129 | |
130 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, |
131 | int max); |
132 | |
133 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *, |
134 | struct qlcnic_host_rds_ring *, |
135 | u16, u16); |
136 | |
137 | static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan) |
138 | { |
139 | return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff)); |
140 | } |
141 | |
142 | static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, |
143 | u16 handle, u8 ring_id) |
144 | { |
145 | if (qlcnic_83xx_check(adapter)) |
146 | return handle | (ring_id << 15); |
147 | else |
148 | return handle; |
149 | } |
150 | |
151 | static inline int qlcnic_82xx_is_lb_pkt(u64 sts_data) |
152 | { |
153 | return (qlcnic_get_sts_status(sts_data) == STATUS_CKSUM_LOOP) ? 1 : 0; |
154 | } |
155 | |
156 | static void qlcnic_delete_rx_list_mac(struct qlcnic_adapter *adapter, |
157 | struct qlcnic_filter *fil, |
158 | void *addr, u16 vlan_id) |
159 | { |
160 | int ret; |
161 | u8 op; |
162 | |
163 | op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; |
164 | ret = qlcnic_sre_macaddr_change(adapter, addr, id: vlan_id, cmd: op); |
165 | if (ret) |
166 | return; |
167 | |
168 | op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; |
169 | ret = qlcnic_sre_macaddr_change(adapter, addr, id: vlan_id, cmd: op); |
170 | if (!ret) { |
171 | hlist_del(n: &fil->fnode); |
172 | adapter->rx_fhash.fnum--; |
173 | } |
174 | } |
175 | |
176 | static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head, |
177 | void *addr, u16 vlan_id) |
178 | { |
179 | struct qlcnic_filter *tmp_fil = NULL; |
180 | struct hlist_node *n; |
181 | |
182 | hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
183 | if (ether_addr_equal(addr1: tmp_fil->faddr, addr2: addr) && |
184 | tmp_fil->vlan_id == vlan_id) |
185 | return tmp_fil; |
186 | } |
187 | |
188 | return NULL; |
189 | } |
190 | |
191 | static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, |
192 | struct sk_buff *skb, int loopback_pkt, u16 vlan_id) |
193 | { |
194 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); |
195 | struct qlcnic_filter *fil, *tmp_fil; |
196 | struct hlist_head *head; |
197 | unsigned long time; |
198 | u64 src_addr = 0; |
199 | u8 hindex, op; |
200 | int ret; |
201 | |
202 | if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff)) |
203 | vlan_id = 0; |
204 | |
205 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
206 | hindex = qlcnic_mac_hash(mac: src_addr, vlan: vlan_id) & |
207 | (adapter->fhash.fbucket_size - 1); |
208 | |
209 | if (loopback_pkt) { |
210 | if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax) |
211 | return; |
212 | |
213 | head = &(adapter->rx_fhash.fhead[hindex]); |
214 | |
215 | tmp_fil = qlcnic_find_mac_filter(head, addr: &src_addr, vlan_id); |
216 | if (tmp_fil) { |
217 | time = tmp_fil->ftime; |
218 | if (time_after(jiffies, QLCNIC_READD_AGE * HZ + time)) |
219 | tmp_fil->ftime = jiffies; |
220 | return; |
221 | } |
222 | |
223 | fil = kzalloc(size: sizeof(struct qlcnic_filter), GFP_ATOMIC); |
224 | if (!fil) |
225 | return; |
226 | |
227 | fil->ftime = jiffies; |
228 | memcpy(fil->faddr, &src_addr, ETH_ALEN); |
229 | fil->vlan_id = vlan_id; |
230 | spin_lock(lock: &adapter->rx_mac_learn_lock); |
231 | hlist_add_head(n: &(fil->fnode), h: head); |
232 | adapter->rx_fhash.fnum++; |
233 | spin_unlock(lock: &adapter->rx_mac_learn_lock); |
234 | } else { |
235 | head = &adapter->fhash.fhead[hindex]; |
236 | |
237 | spin_lock(lock: &adapter->mac_learn_lock); |
238 | |
239 | tmp_fil = qlcnic_find_mac_filter(head, addr: &src_addr, vlan_id); |
240 | if (tmp_fil) { |
241 | op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; |
242 | ret = qlcnic_sre_macaddr_change(adapter, |
243 | addr: (u8 *)&src_addr, |
244 | id: vlan_id, cmd: op); |
245 | if (!ret) { |
246 | hlist_del(n: &tmp_fil->fnode); |
247 | adapter->fhash.fnum--; |
248 | } |
249 | |
250 | spin_unlock(lock: &adapter->mac_learn_lock); |
251 | |
252 | return; |
253 | } |
254 | |
255 | spin_unlock(lock: &adapter->mac_learn_lock); |
256 | |
257 | head = &adapter->rx_fhash.fhead[hindex]; |
258 | |
259 | spin_lock(lock: &adapter->rx_mac_learn_lock); |
260 | |
261 | tmp_fil = qlcnic_find_mac_filter(head, addr: &src_addr, vlan_id); |
262 | if (tmp_fil) |
263 | qlcnic_delete_rx_list_mac(adapter, fil: tmp_fil, addr: &src_addr, |
264 | vlan_id); |
265 | |
266 | spin_unlock(lock: &adapter->rx_mac_learn_lock); |
267 | } |
268 | } |
269 | |
270 | void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, |
271 | u16 vlan_id, struct qlcnic_host_tx_ring *tx_ring) |
272 | { |
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 | u32 producer; |
278 | u64 word; |
279 | |
280 | producer = tx_ring->producer; |
281 | hwdesc = &tx_ring->desc_head[tx_ring->producer]; |
282 | |
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); |
286 | |
287 | word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16); |
288 | req->req_hdr = cpu_to_le64(word); |
289 | |
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); |
293 | |
294 | vlan_req = (struct qlcnic_vlan_req *)&req->words[1]; |
295 | vlan_req->vlan_id = cpu_to_le16(vlan_id); |
296 | |
297 | tx_ring->producer = get_next_index(producer, tx_ring->num_desc); |
298 | smp_mb(); |
299 | } |
300 | |
301 | static void qlcnic_send_filter(struct qlcnic_adapter *adapter, |
302 | struct cmd_desc_type0 *first_desc, |
303 | struct sk_buff *skb, |
304 | struct qlcnic_host_tx_ring *tx_ring) |
305 | { |
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; |
312 | u64 src_addr = 0; |
313 | u16 vlan_id = 0; |
314 | u8 hindex, hval; |
315 | |
316 | if (ether_addr_equal(addr1: phdr->h_source, addr2: adapter->mac_addr)) |
317 | return; |
318 | |
319 | if (adapter->flags & QLCNIC_VLAN_FILTERING) { |
320 | if (protocol == ETH_P_8021Q) { |
321 | vh = skb_vlan_eth_hdr(skb); |
322 | vlan_id = ntohs(vh->h_vlan_TCI); |
323 | } else if (skb_vlan_tag_present(skb)) { |
324 | vlan_id = skb_vlan_tag_get(skb); |
325 | } |
326 | } |
327 | |
328 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
329 | hval = qlcnic_mac_hash(mac: src_addr, vlan: vlan_id); |
330 | hindex = hval & (adapter->fhash.fbucket_size - 1); |
331 | head = &(adapter->fhash.fhead[hindex]); |
332 | |
333 | hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
334 | if (ether_addr_equal(addr1: tmp_fil->faddr, addr2: (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, addr: &src_addr, |
338 | vlan: vlan_id, tx_ring); |
339 | tmp_fil->ftime = jiffies; |
340 | return; |
341 | } |
342 | } |
343 | |
344 | if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) { |
345 | adapter->stats.mac_filter_limit_overrun++; |
346 | return; |
347 | } |
348 | |
349 | fil = kzalloc(size: sizeof(struct qlcnic_filter), GFP_ATOMIC); |
350 | if (!fil) |
351 | return; |
352 | |
353 | qlcnic_change_filter(adapter, addr: &src_addr, vlan: 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(lock: &adapter->mac_learn_lock); |
358 | hlist_add_head(n: &(fil->fnode), h: head); |
359 | adapter->fhash.fnum++; |
360 | spin_unlock(lock: &adapter->mac_learn_lock); |
361 | } |
362 | |
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 |
369 | |
370 | static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter, |
371 | struct cmd_desc_type0 *first_desc, |
372 | struct sk_buff *skb, |
373 | struct qlcnic_host_tx_ring *tx_ring) |
374 | { |
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; |
380 | |
381 | opcode = QLCNIC_TX_ETHER_PKT; |
382 | encap_descr = QLCNIC_ENCAP_VXLAN_PKT; |
383 | |
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); |
388 | |
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; |
398 | |
399 | /* Copy inner and outer headers in Tx descriptor(s) |
400 | * If total_hdr_len > cmd_desc_type0, use multiple |
401 | * descriptors |
402 | */ |
403 | copied = 0; |
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, offset: copied, |
410 | to: (char *)hwdesc, |
411 | len: copy_len); |
412 | copied += copy_len; |
413 | producer = get_next_index(producer, tx_ring->num_desc); |
414 | } |
415 | |
416 | tx_ring->producer = producer; |
417 | |
418 | /* Make sure updated tx_ring->producer is visible |
419 | * for qlcnic_tx_avail() |
420 | */ |
421 | smp_mb(); |
422 | adapter->stats.encap_lso_frames++; |
423 | |
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; |
429 | } else { |
430 | if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP) |
431 | encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP; |
432 | } |
433 | |
434 | adapter->stats.encap_tx_csummed++; |
435 | opcode = QLCNIC_TX_ENCAP_PKT; |
436 | } |
437 | |
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; |
441 | |
442 | /* outer IP header's size in 32bit words size*/ |
443 | encap_descr |= (skb_network_header_len(skb) >> 2) << 6; |
444 | |
445 | /* outer IP header offset */ |
446 | encap_descr |= skb_network_offset(skb) << 10; |
447 | first_desc->encap_descr = cpu_to_le16(encap_descr); |
448 | |
449 | first_desc->tcp_hdr_offset = skb_inner_transport_offset(skb); |
450 | first_desc->ip_hdr_offset = skb_inner_network_offset(skb); |
451 | |
452 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); |
453 | |
454 | return 0; |
455 | } |
456 | |
457 | static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter, |
458 | struct cmd_desc_type0 *first_desc, struct sk_buff *skb, |
459 | struct qlcnic_host_tx_ring *tx_ring) |
460 | { |
461 | u8 l4proto, opcode = 0, hdr_len = 0, tag_vlan = 0; |
462 | u16 flags = 0, vlan_tci = 0; |
463 | int copied, offset, copy_len, size; |
464 | struct cmd_desc_type0 *hwdesc; |
465 | struct vlan_ethhdr *vh; |
466 | u16 protocol = ntohs(skb->protocol); |
467 | u32 producer = tx_ring->producer; |
468 | |
469 | if (protocol == ETH_P_8021Q) { |
470 | vh = skb_vlan_eth_hdr(skb); |
471 | flags = QLCNIC_FLAGS_VLAN_TAGGED; |
472 | vlan_tci = ntohs(vh->h_vlan_TCI); |
473 | protocol = ntohs(vh->h_vlan_encapsulated_proto); |
474 | tag_vlan = 1; |
475 | } else if (skb_vlan_tag_present(skb)) { |
476 | flags = QLCNIC_FLAGS_VLAN_OOB; |
477 | vlan_tci = skb_vlan_tag_get(skb); |
478 | tag_vlan = 1; |
479 | } |
480 | if (unlikely(adapter->tx_pvid)) { |
481 | if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED)) |
482 | return -EIO; |
483 | if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED)) |
484 | goto set_flags; |
485 | |
486 | flags = QLCNIC_FLAGS_VLAN_OOB; |
487 | vlan_tci = adapter->tx_pvid; |
488 | } |
489 | set_flags: |
490 | qlcnic_set_tx_vlan_tci(first_desc, vlan_tci); |
491 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); |
492 | |
493 | if (*(skb->data) & BIT_0) { |
494 | flags |= BIT_0; |
495 | memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN); |
496 | } |
497 | opcode = QLCNIC_TX_ETHER_PKT; |
498 | if (skb_is_gso(skb)) { |
499 | hdr_len = skb_tcp_all_headers(skb); |
500 | first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
501 | first_desc->hdr_length = hdr_len; |
502 | opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 : |
503 | QLCNIC_TX_TCP_LSO; |
504 | |
505 | /* For LSO, we need to copy the MAC/IP/TCP headers into |
506 | * the descriptor ring */ |
507 | copied = 0; |
508 | offset = 2; |
509 | |
510 | if (flags & QLCNIC_FLAGS_VLAN_OOB) { |
511 | first_desc->hdr_length += VLAN_HLEN; |
512 | first_desc->tcp_hdr_offset = VLAN_HLEN; |
513 | first_desc->ip_hdr_offset = VLAN_HLEN; |
514 | |
515 | /* Only in case of TSO on vlan device */ |
516 | flags |= QLCNIC_FLAGS_VLAN_TAGGED; |
517 | |
518 | /* Create a TSO vlan header template for firmware */ |
519 | hwdesc = &tx_ring->desc_head[producer]; |
520 | tx_ring->cmd_buf_arr[producer].skb = NULL; |
521 | |
522 | copy_len = min((int)sizeof(struct cmd_desc_type0) - |
523 | offset, hdr_len + VLAN_HLEN); |
524 | |
525 | vh = (struct vlan_ethhdr *)((char *) hwdesc + 2); |
526 | skb_copy_from_linear_data(skb, to: vh, len: 12); |
527 | vh->h_vlan_proto = htons(ETH_P_8021Q); |
528 | vh->h_vlan_TCI = htons(vlan_tci); |
529 | |
530 | skb_copy_from_linear_data_offset(skb, offset: 12, |
531 | to: (char *)vh + 16, |
532 | len: copy_len - 16); |
533 | copied = copy_len - VLAN_HLEN; |
534 | offset = 0; |
535 | producer = get_next_index(producer, tx_ring->num_desc); |
536 | } |
537 | |
538 | while (copied < hdr_len) { |
539 | size = (int)sizeof(struct cmd_desc_type0) - offset; |
540 | copy_len = min(size, (hdr_len - copied)); |
541 | hwdesc = &tx_ring->desc_head[producer]; |
542 | tx_ring->cmd_buf_arr[producer].skb = NULL; |
543 | skb_copy_from_linear_data_offset(skb, offset: copied, |
544 | to: (char *)hwdesc + |
545 | offset, len: copy_len); |
546 | copied += copy_len; |
547 | offset = 0; |
548 | producer = get_next_index(producer, tx_ring->num_desc); |
549 | } |
550 | |
551 | tx_ring->producer = producer; |
552 | smp_mb(); |
553 | adapter->stats.lso_frames++; |
554 | |
555 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
556 | if (protocol == ETH_P_IP) { |
557 | l4proto = ip_hdr(skb)->protocol; |
558 | |
559 | if (l4proto == IPPROTO_TCP) |
560 | opcode = QLCNIC_TX_TCP_PKT; |
561 | else if (l4proto == IPPROTO_UDP) |
562 | opcode = QLCNIC_TX_UDP_PKT; |
563 | } else if (protocol == ETH_P_IPV6) { |
564 | l4proto = ipv6_hdr(skb)->nexthdr; |
565 | |
566 | if (l4proto == IPPROTO_TCP) |
567 | opcode = QLCNIC_TX_TCPV6_PKT; |
568 | else if (l4proto == IPPROTO_UDP) |
569 | opcode = QLCNIC_TX_UDPV6_PKT; |
570 | } |
571 | } |
572 | first_desc->tcp_hdr_offset += skb_transport_offset(skb); |
573 | first_desc->ip_hdr_offset += skb_network_offset(skb); |
574 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); |
575 | |
576 | return 0; |
577 | } |
578 | |
579 | static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb, |
580 | struct qlcnic_cmd_buffer *pbuf) |
581 | { |
582 | struct qlcnic_skb_frag *nf; |
583 | skb_frag_t *frag; |
584 | int i, nr_frags; |
585 | dma_addr_t map; |
586 | |
587 | nr_frags = skb_shinfo(skb)->nr_frags; |
588 | nf = &pbuf->frag_array[0]; |
589 | |
590 | map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb), |
591 | DMA_TO_DEVICE); |
592 | if (dma_mapping_error(dev: &pdev->dev, dma_addr: map)) |
593 | goto out_err; |
594 | |
595 | nf->dma = map; |
596 | nf->length = skb_headlen(skb); |
597 | |
598 | for (i = 0; i < nr_frags; i++) { |
599 | frag = &skb_shinfo(skb)->frags[i]; |
600 | nf = &pbuf->frag_array[i+1]; |
601 | map = skb_frag_dma_map(dev: &pdev->dev, frag, offset: 0, size: skb_frag_size(frag), |
602 | dir: DMA_TO_DEVICE); |
603 | if (dma_mapping_error(dev: &pdev->dev, dma_addr: map)) |
604 | goto unwind; |
605 | |
606 | nf->dma = map; |
607 | nf->length = skb_frag_size(frag); |
608 | } |
609 | |
610 | return 0; |
611 | |
612 | unwind: |
613 | while (--i >= 0) { |
614 | nf = &pbuf->frag_array[i+1]; |
615 | dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); |
616 | } |
617 | |
618 | nf = &pbuf->frag_array[0]; |
619 | dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); |
620 | |
621 | out_err: |
622 | return -ENOMEM; |
623 | } |
624 | |
625 | static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb, |
626 | struct qlcnic_cmd_buffer *pbuf) |
627 | { |
628 | struct qlcnic_skb_frag *nf = &pbuf->frag_array[0]; |
629 | int i, nr_frags = skb_shinfo(skb)->nr_frags; |
630 | |
631 | for (i = 0; i < nr_frags; i++) { |
632 | nf = &pbuf->frag_array[i+1]; |
633 | dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); |
634 | } |
635 | |
636 | nf = &pbuf->frag_array[0]; |
637 | dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); |
638 | pbuf->skb = NULL; |
639 | } |
640 | |
641 | static inline void qlcnic_clear_cmddesc(u64 *desc) |
642 | { |
643 | desc[0] = 0ULL; |
644 | desc[2] = 0ULL; |
645 | desc[7] = 0ULL; |
646 | } |
647 | |
648 | netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
649 | { |
650 | struct qlcnic_adapter *adapter = netdev_priv(dev: netdev); |
651 | struct qlcnic_host_tx_ring *tx_ring; |
652 | struct qlcnic_cmd_buffer *pbuf; |
653 | struct qlcnic_skb_frag *buffrag; |
654 | struct cmd_desc_type0 *hwdesc, *first_desc; |
655 | struct pci_dev *pdev; |
656 | struct ethhdr *phdr; |
657 | int i, k, frag_count, delta = 0; |
658 | u32 producer, num_txd; |
659 | u16 protocol; |
660 | bool l4_is_udp = false; |
661 | |
662 | if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
663 | netif_tx_stop_all_queues(dev: netdev); |
664 | return NETDEV_TX_BUSY; |
665 | } |
666 | |
667 | if (adapter->flags & QLCNIC_MACSPOOF) { |
668 | phdr = (struct ethhdr *)skb->data; |
669 | if (!ether_addr_equal(addr1: phdr->h_source, addr2: adapter->mac_addr)) |
670 | goto drop_packet; |
671 | } |
672 | |
673 | tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)]; |
674 | num_txd = tx_ring->num_desc; |
675 | |
676 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
677 | |
678 | /* 14 frags supported for normal packet and |
679 | * 32 frags supported for TSO packet |
680 | */ |
681 | if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) { |
682 | for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++) |
683 | delta += skb_frag_size(frag: &skb_shinfo(skb)->frags[i]); |
684 | |
685 | if (!__pskb_pull_tail(skb, delta)) |
686 | goto drop_packet; |
687 | |
688 | frag_count = 1 + skb_shinfo(skb)->nr_frags; |
689 | } |
690 | |
691 | if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) { |
692 | netif_tx_stop_queue(dev_queue: tx_ring->txq); |
693 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
694 | netif_tx_start_queue(dev_queue: tx_ring->txq); |
695 | } else { |
696 | tx_ring->tx_stats.xmit_off++; |
697 | return NETDEV_TX_BUSY; |
698 | } |
699 | } |
700 | |
701 | producer = tx_ring->producer; |
702 | pbuf = &tx_ring->cmd_buf_arr[producer]; |
703 | pdev = adapter->pdev; |
704 | first_desc = &tx_ring->desc_head[producer]; |
705 | hwdesc = &tx_ring->desc_head[producer]; |
706 | qlcnic_clear_cmddesc(desc: (u64 *)hwdesc); |
707 | |
708 | if (qlcnic_map_tx_skb(pdev, skb, pbuf)) { |
709 | adapter->stats.tx_dma_map_error++; |
710 | goto drop_packet; |
711 | } |
712 | |
713 | pbuf->skb = skb; |
714 | pbuf->frag_count = frag_count; |
715 | |
716 | qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len); |
717 | qlcnic_set_tx_port(first_desc, adapter->portnum); |
718 | |
719 | for (i = 0; i < frag_count; i++) { |
720 | k = i % 4; |
721 | |
722 | if ((k == 0) && (i > 0)) { |
723 | /* move to next desc.*/ |
724 | producer = get_next_index(producer, num_txd); |
725 | hwdesc = &tx_ring->desc_head[producer]; |
726 | qlcnic_clear_cmddesc(desc: (u64 *)hwdesc); |
727 | tx_ring->cmd_buf_arr[producer].skb = NULL; |
728 | } |
729 | |
730 | buffrag = &pbuf->frag_array[i]; |
731 | hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length); |
732 | switch (k) { |
733 | case 0: |
734 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); |
735 | break; |
736 | case 1: |
737 | hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma); |
738 | break; |
739 | case 2: |
740 | hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma); |
741 | break; |
742 | case 3: |
743 | hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma); |
744 | break; |
745 | } |
746 | } |
747 | |
748 | tx_ring->producer = get_next_index(producer, num_txd); |
749 | smp_mb(); |
750 | |
751 | protocol = ntohs(skb->protocol); |
752 | if (protocol == ETH_P_IP) |
753 | l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP; |
754 | else if (protocol == ETH_P_IPV6) |
755 | l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP; |
756 | |
757 | /* Check if it is a VXLAN packet */ |
758 | if (!skb->encapsulation || !l4_is_udp || |
759 | !qlcnic_encap_tx_offload(adapter)) { |
760 | if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb, |
761 | tx_ring))) |
762 | goto unwind_buff; |
763 | } else { |
764 | if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc, |
765 | skb, tx_ring))) |
766 | goto unwind_buff; |
767 | } |
768 | |
769 | if (adapter->drv_mac_learn) |
770 | qlcnic_send_filter(adapter, first_desc, skb, tx_ring); |
771 | |
772 | tx_ring->tx_stats.tx_bytes += skb->len; |
773 | tx_ring->tx_stats.xmit_called++; |
774 | |
775 | /* Ensure writes are complete before HW fetches Tx descriptors */ |
776 | wmb(); |
777 | qlcnic_update_cmd_producer(tx_ring); |
778 | |
779 | return NETDEV_TX_OK; |
780 | |
781 | unwind_buff: |
782 | qlcnic_unmap_buffers(pdev, skb, pbuf); |
783 | drop_packet: |
784 | adapter->stats.txdropped++; |
785 | dev_kfree_skb_any(skb); |
786 | return NETDEV_TX_OK; |
787 | } |
788 | |
789 | void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) |
790 | { |
791 | struct net_device *netdev = adapter->netdev; |
792 | |
793 | if (adapter->ahw->linkup && !linkup) { |
794 | netdev_info(dev: netdev, format: "NIC Link is down\n" ); |
795 | adapter->ahw->linkup = 0; |
796 | netif_carrier_off(dev: netdev); |
797 | } else if (!adapter->ahw->linkup && linkup) { |
798 | adapter->ahw->linkup = 1; |
799 | |
800 | /* Do not advertise Link up to the stack if device |
801 | * is in loopback mode |
802 | */ |
803 | if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) { |
804 | netdev_info(dev: netdev, format: "NIC Link is up for loopback test\n" ); |
805 | return; |
806 | } |
807 | |
808 | netdev_info(dev: netdev, format: "NIC Link is up\n" ); |
809 | netif_carrier_on(dev: netdev); |
810 | } |
811 | } |
812 | |
813 | static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter, |
814 | struct qlcnic_host_rds_ring *rds_ring, |
815 | struct qlcnic_rx_buffer *buffer) |
816 | { |
817 | struct sk_buff *skb; |
818 | dma_addr_t dma; |
819 | struct pci_dev *pdev = adapter->pdev; |
820 | |
821 | skb = netdev_alloc_skb(dev: adapter->netdev, length: rds_ring->skb_size); |
822 | if (!skb) { |
823 | adapter->stats.skb_alloc_failure++; |
824 | return -ENOMEM; |
825 | } |
826 | |
827 | skb_reserve(skb, NET_IP_ALIGN); |
828 | dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size, |
829 | DMA_FROM_DEVICE); |
830 | |
831 | if (dma_mapping_error(dev: &pdev->dev, dma_addr: dma)) { |
832 | adapter->stats.rx_dma_map_error++; |
833 | dev_kfree_skb_any(skb); |
834 | return -ENOMEM; |
835 | } |
836 | |
837 | buffer->skb = skb; |
838 | buffer->dma = dma; |
839 | |
840 | return 0; |
841 | } |
842 | |
843 | static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, |
844 | struct qlcnic_host_rds_ring *rds_ring, |
845 | u8 ring_id) |
846 | { |
847 | struct rcv_desc *pdesc; |
848 | struct qlcnic_rx_buffer *buffer; |
849 | int count = 0; |
850 | uint32_t producer, handle; |
851 | struct list_head *head; |
852 | |
853 | if (!spin_trylock(lock: &rds_ring->lock)) |
854 | return; |
855 | |
856 | producer = rds_ring->producer; |
857 | head = &rds_ring->free_list; |
858 | while (!list_empty(head)) { |
859 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); |
860 | |
861 | if (!buffer->skb) { |
862 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) |
863 | break; |
864 | } |
865 | count++; |
866 | list_del(entry: &buffer->list); |
867 | |
868 | /* make a rcv descriptor */ |
869 | pdesc = &rds_ring->desc_head[producer]; |
870 | handle = qlcnic_get_ref_handle(adapter, |
871 | handle: buffer->ref_handle, ring_id); |
872 | pdesc->reference_handle = cpu_to_le16(handle); |
873 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
874 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); |
875 | producer = get_next_index(producer, rds_ring->num_desc); |
876 | } |
877 | if (count) { |
878 | rds_ring->producer = producer; |
879 | writel(val: (producer - 1) & (rds_ring->num_desc - 1), |
880 | addr: rds_ring->crb_rcv_producer); |
881 | } |
882 | spin_unlock(lock: &rds_ring->lock); |
883 | } |
884 | |
885 | static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter, |
886 | struct qlcnic_host_tx_ring *tx_ring, |
887 | int budget) |
888 | { |
889 | u32 sw_consumer, hw_consumer; |
890 | int i, done, count = 0; |
891 | struct qlcnic_cmd_buffer *buffer; |
892 | struct pci_dev *pdev = adapter->pdev; |
893 | struct net_device *netdev = adapter->netdev; |
894 | struct qlcnic_skb_frag *frag; |
895 | |
896 | if (!spin_trylock(lock: &tx_ring->tx_clean_lock)) |
897 | return 1; |
898 | |
899 | sw_consumer = tx_ring->sw_consumer; |
900 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); |
901 | |
902 | while (sw_consumer != hw_consumer) { |
903 | buffer = &tx_ring->cmd_buf_arr[sw_consumer]; |
904 | if (buffer->skb) { |
905 | frag = &buffer->frag_array[0]; |
906 | dma_unmap_single(&pdev->dev, frag->dma, frag->length, |
907 | DMA_TO_DEVICE); |
908 | frag->dma = 0ULL; |
909 | for (i = 1; i < buffer->frag_count; i++) { |
910 | frag++; |
911 | dma_unmap_page(&pdev->dev, frag->dma, |
912 | frag->length, DMA_TO_DEVICE); |
913 | frag->dma = 0ULL; |
914 | } |
915 | tx_ring->tx_stats.xmit_finished++; |
916 | dev_kfree_skb_any(skb: buffer->skb); |
917 | buffer->skb = NULL; |
918 | } |
919 | |
920 | sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); |
921 | if (++count >= budget) |
922 | break; |
923 | } |
924 | |
925 | tx_ring->sw_consumer = sw_consumer; |
926 | |
927 | if (count && netif_running(dev: netdev)) { |
928 | smp_mb(); |
929 | if (netif_tx_queue_stopped(dev_queue: tx_ring->txq) && |
930 | netif_carrier_ok(dev: netdev)) { |
931 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
932 | netif_tx_wake_queue(dev_queue: tx_ring->txq); |
933 | tx_ring->tx_stats.xmit_on++; |
934 | } |
935 | } |
936 | adapter->tx_timeo_cnt = 0; |
937 | } |
938 | /* |
939 | * If everything is freed up to consumer then check if the ring is full |
940 | * If the ring is full then check if more needs to be freed and |
941 | * schedule the call back again. |
942 | * |
943 | * This happens when there are 2 CPUs. One could be freeing and the |
944 | * other filling it. If the ring is full when we get out of here and |
945 | * the card has already interrupted the host then the host can miss the |
946 | * interrupt. |
947 | * |
948 | * There is still a possible race condition and the host could miss an |
949 | * interrupt. The card has to take care of this. |
950 | */ |
951 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); |
952 | done = (sw_consumer == hw_consumer); |
953 | |
954 | spin_unlock(lock: &tx_ring->tx_clean_lock); |
955 | |
956 | return done; |
957 | } |
958 | |
959 | static int qlcnic_poll(struct napi_struct *napi, int budget) |
960 | { |
961 | int tx_complete, work_done; |
962 | struct qlcnic_host_sds_ring *sds_ring; |
963 | struct qlcnic_adapter *adapter; |
964 | struct qlcnic_host_tx_ring *tx_ring; |
965 | |
966 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
967 | adapter = sds_ring->adapter; |
968 | tx_ring = sds_ring->tx_ring; |
969 | |
970 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, |
971 | budget); |
972 | work_done = qlcnic_process_rcv_ring(sds_ring, max: budget); |
973 | |
974 | /* Check if we need a repoll */ |
975 | if (!tx_complete) |
976 | work_done = budget; |
977 | |
978 | if (work_done < budget) { |
979 | napi_complete_done(n: &sds_ring->napi, work_done); |
980 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
981 | qlcnic_enable_sds_intr(adapter, sds_ring); |
982 | qlcnic_enable_tx_intr(adapter, tx_ring); |
983 | } |
984 | } |
985 | |
986 | return work_done; |
987 | } |
988 | |
989 | static int qlcnic_tx_poll(struct napi_struct *napi, int budget) |
990 | { |
991 | struct qlcnic_host_tx_ring *tx_ring; |
992 | struct qlcnic_adapter *adapter; |
993 | int work_done; |
994 | |
995 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); |
996 | adapter = tx_ring->adapter; |
997 | |
998 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
999 | if (work_done) { |
1000 | napi_complete(n: &tx_ring->napi); |
1001 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
1002 | qlcnic_enable_tx_intr(adapter, tx_ring); |
1003 | } else { |
1004 | /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/ |
1005 | work_done = budget; |
1006 | } |
1007 | |
1008 | return work_done; |
1009 | } |
1010 | |
1011 | static int qlcnic_rx_poll(struct napi_struct *napi, int budget) |
1012 | { |
1013 | struct qlcnic_host_sds_ring *sds_ring; |
1014 | struct qlcnic_adapter *adapter; |
1015 | int work_done; |
1016 | |
1017 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1018 | adapter = sds_ring->adapter; |
1019 | |
1020 | work_done = qlcnic_process_rcv_ring(sds_ring, max: budget); |
1021 | |
1022 | if (work_done < budget) { |
1023 | napi_complete_done(n: &sds_ring->napi, work_done); |
1024 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
1025 | qlcnic_enable_sds_intr(adapter, sds_ring); |
1026 | } |
1027 | |
1028 | return work_done; |
1029 | } |
1030 | |
1031 | static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, |
1032 | struct qlcnic_fw_msg *msg) |
1033 | { |
1034 | u32 cable_OUI; |
1035 | u16 cable_len, link_speed; |
1036 | u8 link_status, module, duplex, autoneg, lb_status = 0; |
1037 | struct net_device *netdev = adapter->netdev; |
1038 | |
1039 | adapter->ahw->has_link_events = 1; |
1040 | |
1041 | cable_OUI = msg->body[1] & 0xffffffff; |
1042 | cable_len = (msg->body[1] >> 32) & 0xffff; |
1043 | link_speed = (msg->body[1] >> 48) & 0xffff; |
1044 | |
1045 | link_status = msg->body[2] & 0xff; |
1046 | duplex = (msg->body[2] >> 16) & 0xff; |
1047 | autoneg = (msg->body[2] >> 24) & 0xff; |
1048 | lb_status = (msg->body[2] >> 32) & 0x3; |
1049 | |
1050 | module = (msg->body[2] >> 8) & 0xff; |
1051 | if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) |
1052 | dev_info(&netdev->dev, |
1053 | "unsupported cable: OUI 0x%x, length %d\n" , |
1054 | cable_OUI, cable_len); |
1055 | else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) |
1056 | dev_info(&netdev->dev, "unsupported cable length %d\n" , |
1057 | cable_len); |
1058 | |
1059 | if (!link_status && (lb_status == QLCNIC_ILB_MODE || |
1060 | lb_status == QLCNIC_ELB_MODE)) |
1061 | adapter->ahw->loopback_state |= QLCNIC_LINKEVENT; |
1062 | |
1063 | qlcnic_advert_link_change(adapter, linkup: link_status); |
1064 | |
1065 | if (duplex == LINKEVENT_FULL_DUPLEX) |
1066 | adapter->ahw->link_duplex = DUPLEX_FULL; |
1067 | else |
1068 | adapter->ahw->link_duplex = DUPLEX_HALF; |
1069 | |
1070 | adapter->ahw->module_type = module; |
1071 | adapter->ahw->link_autoneg = autoneg; |
1072 | |
1073 | if (link_status) { |
1074 | adapter->ahw->link_speed = link_speed; |
1075 | } else { |
1076 | adapter->ahw->link_speed = SPEED_UNKNOWN; |
1077 | adapter->ahw->link_duplex = DUPLEX_UNKNOWN; |
1078 | } |
1079 | } |
1080 | |
1081 | static void qlcnic_handle_fw_message(int desc_cnt, int index, |
1082 | struct qlcnic_host_sds_ring *sds_ring) |
1083 | { |
1084 | struct qlcnic_fw_msg msg; |
1085 | struct status_desc *desc; |
1086 | struct qlcnic_adapter *adapter; |
1087 | struct device *dev; |
1088 | int i = 0, opcode, ret; |
1089 | |
1090 | while (desc_cnt > 0 && i < 8) { |
1091 | desc = &sds_ring->desc_head[index]; |
1092 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]); |
1093 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]); |
1094 | |
1095 | index = get_next_index(index, sds_ring->num_desc); |
1096 | desc_cnt--; |
1097 | } |
1098 | |
1099 | adapter = sds_ring->adapter; |
1100 | dev = &adapter->pdev->dev; |
1101 | opcode = qlcnic_get_nic_msg_opcode(msg.body[0]); |
1102 | |
1103 | switch (opcode) { |
1104 | case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE: |
1105 | qlcnic_handle_linkevent(adapter, msg: &msg); |
1106 | break; |
1107 | case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK: |
1108 | ret = (u32)(msg.body[1]); |
1109 | switch (ret) { |
1110 | case 0: |
1111 | adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE; |
1112 | break; |
1113 | case 1: |
1114 | dev_info(dev, "loopback already in progress\n" ); |
1115 | adapter->ahw->diag_cnt = -EINPROGRESS; |
1116 | break; |
1117 | case 2: |
1118 | dev_info(dev, "loopback cable is not connected\n" ); |
1119 | adapter->ahw->diag_cnt = -ENODEV; |
1120 | break; |
1121 | default: |
1122 | dev_info(dev, |
1123 | "loopback configure request failed, err %x\n" , |
1124 | ret); |
1125 | adapter->ahw->diag_cnt = -EIO; |
1126 | break; |
1127 | } |
1128 | break; |
1129 | case QLCNIC_C2H_OPCODE_GET_DCB_AEN: |
1130 | qlcnic_dcb_aen_handler(dcb: adapter->dcb, msg: (void *)&msg); |
1131 | break; |
1132 | default: |
1133 | break; |
1134 | } |
1135 | } |
1136 | |
1137 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
1138 | struct qlcnic_host_rds_ring *ring, |
1139 | u16 index, u16 cksum) |
1140 | { |
1141 | struct qlcnic_rx_buffer *buffer; |
1142 | struct sk_buff *skb; |
1143 | |
1144 | buffer = &ring->rx_buf_arr[index]; |
1145 | if (unlikely(buffer->skb == NULL)) { |
1146 | WARN_ON(1); |
1147 | return NULL; |
1148 | } |
1149 | |
1150 | dma_unmap_single(&adapter->pdev->dev, buffer->dma, ring->dma_size, |
1151 | DMA_FROM_DEVICE); |
1152 | |
1153 | skb = buffer->skb; |
1154 | if (likely((adapter->netdev->features & NETIF_F_RXCSUM) && |
1155 | (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) { |
1156 | adapter->stats.csummed++; |
1157 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
1158 | } else { |
1159 | skb_checksum_none_assert(skb); |
1160 | } |
1161 | |
1162 | |
1163 | buffer->skb = NULL; |
1164 | |
1165 | return skb; |
1166 | } |
1167 | |
1168 | static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, |
1169 | struct sk_buff *skb, u16 *vlan_tag) |
1170 | { |
1171 | struct ethhdr *eth_hdr; |
1172 | |
1173 | if (!__vlan_get_tag(skb, vlan_tci: vlan_tag)) { |
1174 | eth_hdr = (struct ethhdr *)skb->data; |
1175 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); |
1176 | skb_pull(skb, VLAN_HLEN); |
1177 | } |
1178 | if (!adapter->rx_pvid) |
1179 | return 0; |
1180 | |
1181 | if (*vlan_tag == adapter->rx_pvid) { |
1182 | /* Outer vlan tag. Packet should follow non-vlan path */ |
1183 | *vlan_tag = 0xffff; |
1184 | return 0; |
1185 | } |
1186 | if (adapter->flags & QLCNIC_TAGGING_ENABLED) |
1187 | return 0; |
1188 | |
1189 | return -EINVAL; |
1190 | } |
1191 | |
1192 | static struct qlcnic_rx_buffer * |
1193 | qlcnic_process_rcv(struct qlcnic_adapter *adapter, |
1194 | struct qlcnic_host_sds_ring *sds_ring, int ring, |
1195 | u64 sts_data0) |
1196 | { |
1197 | struct net_device *netdev = adapter->netdev; |
1198 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1199 | struct qlcnic_rx_buffer *buffer; |
1200 | struct sk_buff *skb; |
1201 | struct qlcnic_host_rds_ring *rds_ring; |
1202 | int index, length, cksum, pkt_offset, is_lb_pkt; |
1203 | u16 vid = 0xffff, t_vid; |
1204 | |
1205 | if (unlikely(ring >= adapter->max_rds_rings)) |
1206 | return NULL; |
1207 | |
1208 | rds_ring = &recv_ctx->rds_rings[ring]; |
1209 | |
1210 | index = qlcnic_get_sts_refhandle(sts_data0); |
1211 | if (unlikely(index >= rds_ring->num_desc)) |
1212 | return NULL; |
1213 | |
1214 | buffer = &rds_ring->rx_buf_arr[index]; |
1215 | length = qlcnic_get_sts_totallength(sts_data0); |
1216 | cksum = qlcnic_get_sts_status(sts_data0); |
1217 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); |
1218 | |
1219 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, cksum); |
1220 | if (!skb) |
1221 | return buffer; |
1222 | |
1223 | if (adapter->rx_mac_learn) { |
1224 | t_vid = 0; |
1225 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data: sts_data0); |
1226 | qlcnic_add_lb_filter(adapter, skb, loopback_pkt: is_lb_pkt, vlan_id: t_vid); |
1227 | } |
1228 | |
1229 | if (length > rds_ring->skb_size) |
1230 | skb_put(skb, len: rds_ring->skb_size); |
1231 | else |
1232 | skb_put(skb, len: length); |
1233 | |
1234 | if (pkt_offset) |
1235 | skb_pull(skb, len: pkt_offset); |
1236 | |
1237 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { |
1238 | adapter->stats.rxdropped++; |
1239 | dev_kfree_skb(skb); |
1240 | return buffer; |
1241 | } |
1242 | |
1243 | skb->protocol = eth_type_trans(skb, dev: netdev); |
1244 | |
1245 | if (vid != 0xffff) |
1246 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: vid); |
1247 | |
1248 | napi_gro_receive(napi: &sds_ring->napi, skb); |
1249 | |
1250 | adapter->stats.rx_pkts++; |
1251 | adapter->stats.rxbytes += length; |
1252 | |
1253 | return buffer; |
1254 | } |
1255 | |
1256 | #define QLC_TCP_HDR_SIZE 20 |
1257 | #define QLC_TCP_TS_OPTION_SIZE 12 |
1258 | #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE) |
1259 | |
1260 | static struct qlcnic_rx_buffer * |
1261 | qlcnic_process_lro(struct qlcnic_adapter *adapter, |
1262 | int ring, u64 sts_data0, u64 sts_data1) |
1263 | { |
1264 | struct net_device *netdev = adapter->netdev; |
1265 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1266 | struct qlcnic_rx_buffer *buffer; |
1267 | struct sk_buff *skb; |
1268 | struct qlcnic_host_rds_ring *rds_ring; |
1269 | struct iphdr *iph; |
1270 | struct ipv6hdr *ipv6h; |
1271 | struct tcphdr *th; |
1272 | bool push, timestamp; |
1273 | int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt; |
1274 | u16 lro_length, length, data_offset, t_vid, vid = 0xffff; |
1275 | u32 seq_number; |
1276 | |
1277 | if (unlikely(ring >= adapter->max_rds_rings)) |
1278 | return NULL; |
1279 | |
1280 | rds_ring = &recv_ctx->rds_rings[ring]; |
1281 | |
1282 | index = qlcnic_get_lro_sts_refhandle(sts_data0); |
1283 | if (unlikely(index >= rds_ring->num_desc)) |
1284 | return NULL; |
1285 | |
1286 | buffer = &rds_ring->rx_buf_arr[index]; |
1287 | |
1288 | timestamp = qlcnic_get_lro_sts_timestamp(sts_data0); |
1289 | lro_length = qlcnic_get_lro_sts_length(sts_data0); |
1290 | l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0); |
1291 | l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0); |
1292 | push = qlcnic_get_lro_sts_push_flag(sts_data0); |
1293 | seq_number = qlcnic_get_lro_sts_seq_number(sts_data1); |
1294 | |
1295 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, STATUS_CKSUM_OK); |
1296 | if (!skb) |
1297 | return buffer; |
1298 | |
1299 | if (adapter->rx_mac_learn) { |
1300 | t_vid = 0; |
1301 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data: sts_data0); |
1302 | qlcnic_add_lb_filter(adapter, skb, loopback_pkt: is_lb_pkt, vlan_id: t_vid); |
1303 | } |
1304 | |
1305 | if (timestamp) |
1306 | data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE; |
1307 | else |
1308 | data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE; |
1309 | |
1310 | skb_put(skb, len: lro_length + data_offset); |
1311 | skb_pull(skb, len: l2_hdr_offset); |
1312 | |
1313 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { |
1314 | adapter->stats.rxdropped++; |
1315 | dev_kfree_skb(skb); |
1316 | return buffer; |
1317 | } |
1318 | |
1319 | skb->protocol = eth_type_trans(skb, dev: netdev); |
1320 | |
1321 | if (ntohs(skb->protocol) == ETH_P_IPV6) { |
1322 | ipv6h = (struct ipv6hdr *)skb->data; |
1323 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); |
1324 | length = (th->doff << 2) + lro_length; |
1325 | ipv6h->payload_len = htons(length); |
1326 | } else { |
1327 | iph = (struct iphdr *)skb->data; |
1328 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); |
1329 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; |
1330 | csum_replace2(sum: &iph->check, old: iph->tot_len, htons(length)); |
1331 | iph->tot_len = htons(length); |
1332 | } |
1333 | |
1334 | th->psh = push; |
1335 | th->seq = htonl(seq_number); |
1336 | length = skb->len; |
1337 | |
1338 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
1339 | skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1); |
1340 | if (skb->protocol == htons(ETH_P_IPV6)) |
1341 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; |
1342 | else |
1343 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; |
1344 | } |
1345 | |
1346 | if (vid != 0xffff) |
1347 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: vid); |
1348 | netif_receive_skb(skb); |
1349 | |
1350 | adapter->stats.lro_pkts++; |
1351 | adapter->stats.lrobytes += length; |
1352 | |
1353 | return buffer; |
1354 | } |
1355 | |
1356 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) |
1357 | { |
1358 | struct qlcnic_host_rds_ring *rds_ring; |
1359 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1360 | struct list_head *cur; |
1361 | struct status_desc *desc; |
1362 | struct qlcnic_rx_buffer *rxbuf; |
1363 | int opcode, desc_cnt, count = 0; |
1364 | u64 sts_data0, sts_data1; |
1365 | u8 ring; |
1366 | u32 consumer = sds_ring->consumer; |
1367 | |
1368 | while (count < max) { |
1369 | desc = &sds_ring->desc_head[consumer]; |
1370 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); |
1371 | |
1372 | if (!(sts_data0 & STATUS_OWNER_HOST)) |
1373 | break; |
1374 | |
1375 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); |
1376 | opcode = qlcnic_get_sts_opcode(sts_data0); |
1377 | switch (opcode) { |
1378 | case QLCNIC_RXPKT_DESC: |
1379 | case QLCNIC_OLD_RXPKT_DESC: |
1380 | case QLCNIC_SYN_OFFLOAD: |
1381 | ring = qlcnic_get_sts_type(sts_data0); |
1382 | rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, |
1383 | sts_data0); |
1384 | break; |
1385 | case QLCNIC_LRO_DESC: |
1386 | ring = qlcnic_get_lro_sts_type(sts_data0); |
1387 | sts_data1 = le64_to_cpu(desc->status_desc_data[1]); |
1388 | rxbuf = qlcnic_process_lro(adapter, ring, sts_data0, |
1389 | sts_data1); |
1390 | break; |
1391 | case QLCNIC_RESPONSE_DESC: |
1392 | qlcnic_handle_fw_message(desc_cnt, index: consumer, sds_ring); |
1393 | goto skip; |
1394 | default: |
1395 | goto skip; |
1396 | } |
1397 | WARN_ON(desc_cnt > 1); |
1398 | |
1399 | if (likely(rxbuf)) |
1400 | list_add_tail(new: &rxbuf->list, head: &sds_ring->free_list[ring]); |
1401 | else |
1402 | adapter->stats.null_rxbuf++; |
1403 | skip: |
1404 | for (; desc_cnt > 0; desc_cnt--) { |
1405 | desc = &sds_ring->desc_head[consumer]; |
1406 | desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW; |
1407 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1408 | } |
1409 | count++; |
1410 | } |
1411 | |
1412 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { |
1413 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
1414 | if (!list_empty(head: &sds_ring->free_list[ring])) { |
1415 | list_for_each(cur, &sds_ring->free_list[ring]) { |
1416 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1417 | list); |
1418 | qlcnic_alloc_rx_skb(adapter, rds_ring, buffer: rxbuf); |
1419 | } |
1420 | spin_lock(lock: &rds_ring->lock); |
1421 | list_splice_tail_init(list: &sds_ring->free_list[ring], |
1422 | head: &rds_ring->free_list); |
1423 | spin_unlock(lock: &rds_ring->lock); |
1424 | } |
1425 | |
1426 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring_id: ring); |
1427 | } |
1428 | |
1429 | if (count) { |
1430 | sds_ring->consumer = consumer; |
1431 | writel(val: consumer, addr: sds_ring->crb_sts_consumer); |
1432 | } |
1433 | |
1434 | return count; |
1435 | } |
1436 | |
1437 | void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, |
1438 | struct qlcnic_host_rds_ring *rds_ring, u8 ring_id) |
1439 | { |
1440 | struct rcv_desc *pdesc; |
1441 | struct qlcnic_rx_buffer *buffer; |
1442 | int count = 0; |
1443 | u32 producer, handle; |
1444 | struct list_head *head; |
1445 | |
1446 | producer = rds_ring->producer; |
1447 | head = &rds_ring->free_list; |
1448 | |
1449 | while (!list_empty(head)) { |
1450 | |
1451 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); |
1452 | |
1453 | if (!buffer->skb) { |
1454 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) |
1455 | break; |
1456 | } |
1457 | |
1458 | count++; |
1459 | list_del(entry: &buffer->list); |
1460 | |
1461 | /* make a rcv descriptor */ |
1462 | pdesc = &rds_ring->desc_head[producer]; |
1463 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); |
1464 | handle = qlcnic_get_ref_handle(adapter, handle: buffer->ref_handle, |
1465 | ring_id); |
1466 | pdesc->reference_handle = cpu_to_le16(handle); |
1467 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
1468 | producer = get_next_index(producer, rds_ring->num_desc); |
1469 | } |
1470 | |
1471 | if (count) { |
1472 | rds_ring->producer = producer; |
1473 | writel(val: (producer-1) & (rds_ring->num_desc-1), |
1474 | addr: rds_ring->crb_rcv_producer); |
1475 | } |
1476 | } |
1477 | |
1478 | static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter) |
1479 | { |
1480 | if (adapter->ahw->msg_enable & NETIF_MSG_DRV) { |
1481 | char prefix[30]; |
1482 | |
1483 | scnprintf(buf: prefix, size: sizeof(prefix), fmt: "%s: %s: " , |
1484 | dev_name(dev: &adapter->pdev->dev), __func__); |
1485 | |
1486 | print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1, |
1487 | skb->data, skb->len, true); |
1488 | } |
1489 | } |
1490 | |
1491 | static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring, |
1492 | u64 sts_data0) |
1493 | { |
1494 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1495 | struct sk_buff *skb; |
1496 | struct qlcnic_host_rds_ring *rds_ring; |
1497 | int index, length, cksum, pkt_offset; |
1498 | |
1499 | if (unlikely(ring >= adapter->max_rds_rings)) |
1500 | return; |
1501 | |
1502 | rds_ring = &recv_ctx->rds_rings[ring]; |
1503 | |
1504 | index = qlcnic_get_sts_refhandle(sts_data0); |
1505 | length = qlcnic_get_sts_totallength(sts_data0); |
1506 | if (unlikely(index >= rds_ring->num_desc)) |
1507 | return; |
1508 | |
1509 | cksum = qlcnic_get_sts_status(sts_data0); |
1510 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); |
1511 | |
1512 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, cksum); |
1513 | if (!skb) |
1514 | return; |
1515 | |
1516 | if (length > rds_ring->skb_size) |
1517 | skb_put(skb, len: rds_ring->skb_size); |
1518 | else |
1519 | skb_put(skb, len: length); |
1520 | |
1521 | if (pkt_offset) |
1522 | skb_pull(skb, len: pkt_offset); |
1523 | |
1524 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) |
1525 | adapter->ahw->diag_cnt++; |
1526 | else |
1527 | dump_skb(skb, adapter); |
1528 | |
1529 | dev_kfree_skb_any(skb); |
1530 | adapter->stats.rx_pkts++; |
1531 | adapter->stats.rxbytes += length; |
1532 | |
1533 | return; |
1534 | } |
1535 | |
1536 | void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
1537 | { |
1538 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1539 | struct status_desc *desc; |
1540 | u64 sts_data0; |
1541 | int ring, opcode, desc_cnt; |
1542 | |
1543 | u32 consumer = sds_ring->consumer; |
1544 | |
1545 | desc = &sds_ring->desc_head[consumer]; |
1546 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); |
1547 | |
1548 | if (!(sts_data0 & STATUS_OWNER_HOST)) |
1549 | return; |
1550 | |
1551 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); |
1552 | opcode = qlcnic_get_sts_opcode(sts_data0); |
1553 | switch (opcode) { |
1554 | case QLCNIC_RESPONSE_DESC: |
1555 | qlcnic_handle_fw_message(desc_cnt, index: consumer, sds_ring); |
1556 | break; |
1557 | default: |
1558 | ring = qlcnic_get_sts_type(sts_data0); |
1559 | qlcnic_process_rcv_diag(adapter, ring, sts_data0); |
1560 | break; |
1561 | } |
1562 | |
1563 | for (; desc_cnt > 0; desc_cnt--) { |
1564 | desc = &sds_ring->desc_head[consumer]; |
1565 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); |
1566 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1567 | } |
1568 | |
1569 | sds_ring->consumer = consumer; |
1570 | writel(val: consumer, addr: sds_ring->crb_sts_consumer); |
1571 | } |
1572 | |
1573 | int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
1574 | struct net_device *netdev) |
1575 | { |
1576 | int ring; |
1577 | struct qlcnic_host_sds_ring *sds_ring; |
1578 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1579 | struct qlcnic_host_tx_ring *tx_ring; |
1580 | |
1581 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
1582 | return -ENOMEM; |
1583 | |
1584 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
1585 | sds_ring = &recv_ctx->sds_rings[ring]; |
1586 | if (qlcnic_check_multi_tx(adapter) && |
1587 | !adapter->ahw->diag_test) { |
1588 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
1589 | poll: qlcnic_rx_poll); |
1590 | } else { |
1591 | if (ring == (adapter->drv_sds_rings - 1)) |
1592 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
1593 | poll: qlcnic_poll); |
1594 | else |
1595 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
1596 | poll: qlcnic_rx_poll); |
1597 | } |
1598 | } |
1599 | |
1600 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
1601 | qlcnic_free_sds_rings(recv_ctx); |
1602 | return -ENOMEM; |
1603 | } |
1604 | |
1605 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
1606 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
1607 | tx_ring = &adapter->tx_ring[ring]; |
1608 | netif_napi_add_tx(dev: netdev, napi: &tx_ring->napi, |
1609 | poll: qlcnic_tx_poll); |
1610 | } |
1611 | } |
1612 | |
1613 | return 0; |
1614 | } |
1615 | |
1616 | void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter) |
1617 | { |
1618 | int ring; |
1619 | struct qlcnic_host_sds_ring *sds_ring; |
1620 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1621 | struct qlcnic_host_tx_ring *tx_ring; |
1622 | |
1623 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
1624 | sds_ring = &recv_ctx->sds_rings[ring]; |
1625 | netif_napi_del(napi: &sds_ring->napi); |
1626 | } |
1627 | |
1628 | qlcnic_free_sds_rings(adapter->recv_ctx); |
1629 | |
1630 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
1631 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
1632 | tx_ring = &adapter->tx_ring[ring]; |
1633 | netif_napi_del(napi: &tx_ring->napi); |
1634 | } |
1635 | } |
1636 | |
1637 | qlcnic_free_tx_rings(adapter); |
1638 | } |
1639 | |
1640 | void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter) |
1641 | { |
1642 | int ring; |
1643 | struct qlcnic_host_sds_ring *sds_ring; |
1644 | struct qlcnic_host_tx_ring *tx_ring; |
1645 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1646 | |
1647 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) |
1648 | return; |
1649 | |
1650 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
1651 | sds_ring = &recv_ctx->sds_rings[ring]; |
1652 | napi_enable(n: &sds_ring->napi); |
1653 | qlcnic_enable_sds_intr(adapter, sds_ring); |
1654 | } |
1655 | |
1656 | if (qlcnic_check_multi_tx(adapter) && |
1657 | (adapter->flags & QLCNIC_MSIX_ENABLED) && |
1658 | !adapter->ahw->diag_test) { |
1659 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
1660 | tx_ring = &adapter->tx_ring[ring]; |
1661 | napi_enable(n: &tx_ring->napi); |
1662 | qlcnic_enable_tx_intr(adapter, tx_ring); |
1663 | } |
1664 | } |
1665 | } |
1666 | |
1667 | void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter) |
1668 | { |
1669 | int ring; |
1670 | struct qlcnic_host_sds_ring *sds_ring; |
1671 | struct qlcnic_host_tx_ring *tx_ring; |
1672 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1673 | |
1674 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) |
1675 | return; |
1676 | |
1677 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
1678 | sds_ring = &recv_ctx->sds_rings[ring]; |
1679 | qlcnic_disable_sds_intr(adapter, sds_ring); |
1680 | napi_synchronize(n: &sds_ring->napi); |
1681 | napi_disable(n: &sds_ring->napi); |
1682 | } |
1683 | |
1684 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
1685 | !adapter->ahw->diag_test && |
1686 | qlcnic_check_multi_tx(adapter)) { |
1687 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
1688 | tx_ring = &adapter->tx_ring[ring]; |
1689 | qlcnic_disable_tx_intr(adapter, tx_ring); |
1690 | napi_synchronize(n: &tx_ring->napi); |
1691 | napi_disable(n: &tx_ring->napi); |
1692 | } |
1693 | } |
1694 | } |
1695 | |
1696 | #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36) |
1697 | #define QLC_83XX_LRO_LB_PKT (1ULL << 46) |
1698 | |
1699 | static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt) |
1700 | { |
1701 | if (lro_pkt) |
1702 | return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0; |
1703 | else |
1704 | return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0; |
1705 | } |
1706 | |
1707 | #define QLCNIC_ENCAP_LENGTH_MASK 0x7f |
1708 | |
1709 | static inline u8 qlcnic_encap_length(u64 sts_data) |
1710 | { |
1711 | return sts_data & QLCNIC_ENCAP_LENGTH_MASK; |
1712 | } |
1713 | |
1714 | static struct qlcnic_rx_buffer * |
1715 | qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter, |
1716 | struct qlcnic_host_sds_ring *sds_ring, |
1717 | u8 ring, u64 sts_data[]) |
1718 | { |
1719 | struct net_device *netdev = adapter->netdev; |
1720 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1721 | struct qlcnic_rx_buffer *buffer; |
1722 | struct sk_buff *skb; |
1723 | struct qlcnic_host_rds_ring *rds_ring; |
1724 | int index, length, cksum, is_lb_pkt; |
1725 | u16 vid = 0xffff; |
1726 | int err; |
1727 | |
1728 | if (unlikely(ring >= adapter->max_rds_rings)) |
1729 | return NULL; |
1730 | |
1731 | rds_ring = &recv_ctx->rds_rings[ring]; |
1732 | |
1733 | index = qlcnic_83xx_hndl(sts_data[0]); |
1734 | if (unlikely(index >= rds_ring->num_desc)) |
1735 | return NULL; |
1736 | |
1737 | buffer = &rds_ring->rx_buf_arr[index]; |
1738 | length = qlcnic_83xx_pktln(sts_data[0]); |
1739 | cksum = qlcnic_83xx_csum_status(sts_data[1]); |
1740 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, cksum); |
1741 | if (!skb) |
1742 | return buffer; |
1743 | |
1744 | if (length > rds_ring->skb_size) |
1745 | skb_put(skb, len: rds_ring->skb_size); |
1746 | else |
1747 | skb_put(skb, len: length); |
1748 | |
1749 | err = qlcnic_check_rx_tagging(adapter, skb, vlan_tag: &vid); |
1750 | |
1751 | if (adapter->rx_mac_learn) { |
1752 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data: sts_data[1], lro_pkt: 0); |
1753 | qlcnic_add_lb_filter(adapter, skb, loopback_pkt: is_lb_pkt, vlan_id: vid); |
1754 | } |
1755 | |
1756 | if (unlikely(err)) { |
1757 | adapter->stats.rxdropped++; |
1758 | dev_kfree_skb(skb); |
1759 | return buffer; |
1760 | } |
1761 | |
1762 | skb->protocol = eth_type_trans(skb, dev: netdev); |
1763 | |
1764 | if (qlcnic_encap_length(sts_data: sts_data[1]) && |
1765 | skb->ip_summed == CHECKSUM_UNNECESSARY) { |
1766 | skb->csum_level = 1; |
1767 | adapter->stats.encap_rx_csummed++; |
1768 | } |
1769 | |
1770 | if (vid != 0xffff) |
1771 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: vid); |
1772 | |
1773 | napi_gro_receive(napi: &sds_ring->napi, skb); |
1774 | |
1775 | adapter->stats.rx_pkts++; |
1776 | adapter->stats.rxbytes += length; |
1777 | |
1778 | return buffer; |
1779 | } |
1780 | |
1781 | static struct qlcnic_rx_buffer * |
1782 | qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, |
1783 | u8 ring, u64 sts_data[]) |
1784 | { |
1785 | struct net_device *netdev = adapter->netdev; |
1786 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1787 | struct qlcnic_rx_buffer *buffer; |
1788 | struct sk_buff *skb; |
1789 | struct qlcnic_host_rds_ring *rds_ring; |
1790 | struct iphdr *iph; |
1791 | struct ipv6hdr *ipv6h; |
1792 | struct tcphdr *th; |
1793 | bool push; |
1794 | int l2_hdr_offset, l4_hdr_offset; |
1795 | int index, is_lb_pkt; |
1796 | u16 lro_length, length, data_offset, gso_size; |
1797 | u16 vid = 0xffff; |
1798 | int err; |
1799 | |
1800 | if (unlikely(ring >= adapter->max_rds_rings)) |
1801 | return NULL; |
1802 | |
1803 | rds_ring = &recv_ctx->rds_rings[ring]; |
1804 | |
1805 | index = qlcnic_83xx_hndl(sts_data[0]); |
1806 | if (unlikely(index >= rds_ring->num_desc)) |
1807 | return NULL; |
1808 | |
1809 | buffer = &rds_ring->rx_buf_arr[index]; |
1810 | |
1811 | lro_length = qlcnic_83xx_lro_pktln(sts_data[0]); |
1812 | l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]); |
1813 | l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]); |
1814 | push = qlcnic_83xx_is_psh_bit(sts_data[1]); |
1815 | |
1816 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, STATUS_CKSUM_OK); |
1817 | if (!skb) |
1818 | return buffer; |
1819 | |
1820 | if (qlcnic_83xx_is_tstamp(sts_data[1])) |
1821 | data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE; |
1822 | else |
1823 | data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE; |
1824 | |
1825 | skb_put(skb, len: lro_length + data_offset); |
1826 | skb_pull(skb, len: l2_hdr_offset); |
1827 | |
1828 | err = qlcnic_check_rx_tagging(adapter, skb, vlan_tag: &vid); |
1829 | |
1830 | if (adapter->rx_mac_learn) { |
1831 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data: sts_data[1], lro_pkt: 1); |
1832 | qlcnic_add_lb_filter(adapter, skb, loopback_pkt: is_lb_pkt, vlan_id: vid); |
1833 | } |
1834 | |
1835 | if (unlikely(err)) { |
1836 | adapter->stats.rxdropped++; |
1837 | dev_kfree_skb(skb); |
1838 | return buffer; |
1839 | } |
1840 | |
1841 | skb->protocol = eth_type_trans(skb, dev: netdev); |
1842 | if (ntohs(skb->protocol) == ETH_P_IPV6) { |
1843 | ipv6h = (struct ipv6hdr *)skb->data; |
1844 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); |
1845 | |
1846 | length = (th->doff << 2) + lro_length; |
1847 | ipv6h->payload_len = htons(length); |
1848 | } else { |
1849 | iph = (struct iphdr *)skb->data; |
1850 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); |
1851 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; |
1852 | csum_replace2(sum: &iph->check, old: iph->tot_len, htons(length)); |
1853 | iph->tot_len = htons(length); |
1854 | } |
1855 | |
1856 | th->psh = push; |
1857 | length = skb->len; |
1858 | |
1859 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
1860 | gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]); |
1861 | skb_shinfo(skb)->gso_size = gso_size; |
1862 | if (skb->protocol == htons(ETH_P_IPV6)) |
1863 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; |
1864 | else |
1865 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; |
1866 | } |
1867 | |
1868 | if (vid != 0xffff) |
1869 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: vid); |
1870 | |
1871 | netif_receive_skb(skb); |
1872 | |
1873 | adapter->stats.lro_pkts++; |
1874 | adapter->stats.lrobytes += length; |
1875 | return buffer; |
1876 | } |
1877 | |
1878 | static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, |
1879 | int max) |
1880 | { |
1881 | struct qlcnic_host_rds_ring *rds_ring; |
1882 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1883 | struct list_head *cur; |
1884 | struct status_desc *desc; |
1885 | struct qlcnic_rx_buffer *rxbuf = NULL; |
1886 | u8 ring; |
1887 | u64 sts_data[2]; |
1888 | int count = 0, opcode; |
1889 | u32 consumer = sds_ring->consumer; |
1890 | |
1891 | while (count < max) { |
1892 | desc = &sds_ring->desc_head[consumer]; |
1893 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); |
1894 | opcode = qlcnic_83xx_opcode(sts_data[1]); |
1895 | if (!opcode) |
1896 | break; |
1897 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); |
1898 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); |
1899 | |
1900 | switch (opcode) { |
1901 | case QLC_83XX_REG_DESC: |
1902 | rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring, |
1903 | ring, sts_data); |
1904 | break; |
1905 | case QLC_83XX_LRO_DESC: |
1906 | rxbuf = qlcnic_83xx_process_lro(adapter, ring, |
1907 | sts_data); |
1908 | break; |
1909 | default: |
1910 | dev_info(&adapter->pdev->dev, |
1911 | "Unknown opcode: 0x%x\n" , opcode); |
1912 | goto skip; |
1913 | } |
1914 | |
1915 | if (likely(rxbuf)) |
1916 | list_add_tail(new: &rxbuf->list, head: &sds_ring->free_list[ring]); |
1917 | else |
1918 | adapter->stats.null_rxbuf++; |
1919 | skip: |
1920 | desc = &sds_ring->desc_head[consumer]; |
1921 | /* Reset the descriptor */ |
1922 | desc->status_desc_data[1] = 0; |
1923 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1924 | count++; |
1925 | } |
1926 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { |
1927 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
1928 | if (!list_empty(head: &sds_ring->free_list[ring])) { |
1929 | list_for_each(cur, &sds_ring->free_list[ring]) { |
1930 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1931 | list); |
1932 | qlcnic_alloc_rx_skb(adapter, rds_ring, buffer: rxbuf); |
1933 | } |
1934 | spin_lock(lock: &rds_ring->lock); |
1935 | list_splice_tail_init(list: &sds_ring->free_list[ring], |
1936 | head: &rds_ring->free_list); |
1937 | spin_unlock(lock: &rds_ring->lock); |
1938 | } |
1939 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring_id: ring); |
1940 | } |
1941 | if (count) { |
1942 | sds_ring->consumer = consumer; |
1943 | writel(val: consumer, addr: sds_ring->crb_sts_consumer); |
1944 | } |
1945 | return count; |
1946 | } |
1947 | |
1948 | static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget) |
1949 | { |
1950 | int tx_complete; |
1951 | int work_done; |
1952 | struct qlcnic_host_sds_ring *sds_ring; |
1953 | struct qlcnic_adapter *adapter; |
1954 | struct qlcnic_host_tx_ring *tx_ring; |
1955 | |
1956 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1957 | adapter = sds_ring->adapter; |
1958 | /* tx ring count = 1 */ |
1959 | tx_ring = adapter->tx_ring; |
1960 | |
1961 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
1962 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, max: budget); |
1963 | |
1964 | /* Check if we need a repoll */ |
1965 | if (!tx_complete) |
1966 | work_done = budget; |
1967 | |
1968 | if (work_done < budget) { |
1969 | napi_complete_done(n: &sds_ring->napi, work_done); |
1970 | qlcnic_enable_sds_intr(adapter, sds_ring); |
1971 | } |
1972 | |
1973 | return work_done; |
1974 | } |
1975 | |
1976 | static int qlcnic_83xx_poll(struct napi_struct *napi, int budget) |
1977 | { |
1978 | int tx_complete; |
1979 | int work_done; |
1980 | struct qlcnic_host_sds_ring *sds_ring; |
1981 | struct qlcnic_adapter *adapter; |
1982 | struct qlcnic_host_tx_ring *tx_ring; |
1983 | |
1984 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1985 | adapter = sds_ring->adapter; |
1986 | /* tx ring count = 1 */ |
1987 | tx_ring = adapter->tx_ring; |
1988 | |
1989 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
1990 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, max: budget); |
1991 | |
1992 | /* Check if we need a repoll */ |
1993 | if (!tx_complete) |
1994 | work_done = budget; |
1995 | |
1996 | if (work_done < budget) { |
1997 | napi_complete_done(n: &sds_ring->napi, work_done); |
1998 | qlcnic_enable_sds_intr(adapter, sds_ring); |
1999 | } |
2000 | |
2001 | return work_done; |
2002 | } |
2003 | |
2004 | static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget) |
2005 | { |
2006 | int work_done; |
2007 | struct qlcnic_host_tx_ring *tx_ring; |
2008 | struct qlcnic_adapter *adapter; |
2009 | |
2010 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); |
2011 | adapter = tx_ring->adapter; |
2012 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
2013 | if (work_done) { |
2014 | napi_complete(n: &tx_ring->napi); |
2015 | if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) |
2016 | qlcnic_enable_tx_intr(adapter, tx_ring); |
2017 | } else { |
2018 | /* need a repoll */ |
2019 | work_done = budget; |
2020 | } |
2021 | |
2022 | return work_done; |
2023 | } |
2024 | |
2025 | static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget) |
2026 | { |
2027 | int work_done; |
2028 | struct qlcnic_host_sds_ring *sds_ring; |
2029 | struct qlcnic_adapter *adapter; |
2030 | |
2031 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
2032 | adapter = sds_ring->adapter; |
2033 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, max: budget); |
2034 | if (work_done < budget) { |
2035 | napi_complete_done(n: &sds_ring->napi, work_done); |
2036 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
2037 | qlcnic_enable_sds_intr(adapter, sds_ring); |
2038 | } |
2039 | |
2040 | return work_done; |
2041 | } |
2042 | |
2043 | void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter) |
2044 | { |
2045 | int ring; |
2046 | struct qlcnic_host_sds_ring *sds_ring; |
2047 | struct qlcnic_host_tx_ring *tx_ring; |
2048 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
2049 | |
2050 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) |
2051 | return; |
2052 | |
2053 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
2054 | sds_ring = &recv_ctx->sds_rings[ring]; |
2055 | napi_enable(n: &sds_ring->napi); |
2056 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2057 | qlcnic_enable_sds_intr(adapter, sds_ring); |
2058 | } |
2059 | |
2060 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2061 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { |
2062 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
2063 | tx_ring = &adapter->tx_ring[ring]; |
2064 | napi_enable(n: &tx_ring->napi); |
2065 | qlcnic_enable_tx_intr(adapter, tx_ring); |
2066 | } |
2067 | } |
2068 | } |
2069 | |
2070 | void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter) |
2071 | { |
2072 | int ring; |
2073 | struct qlcnic_host_sds_ring *sds_ring; |
2074 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
2075 | struct qlcnic_host_tx_ring *tx_ring; |
2076 | |
2077 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) |
2078 | return; |
2079 | |
2080 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
2081 | sds_ring = &recv_ctx->sds_rings[ring]; |
2082 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2083 | qlcnic_disable_sds_intr(adapter, sds_ring); |
2084 | napi_synchronize(n: &sds_ring->napi); |
2085 | napi_disable(n: &sds_ring->napi); |
2086 | } |
2087 | |
2088 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2089 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { |
2090 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
2091 | tx_ring = &adapter->tx_ring[ring]; |
2092 | qlcnic_disable_tx_intr(adapter, tx_ring); |
2093 | napi_synchronize(n: &tx_ring->napi); |
2094 | napi_disable(n: &tx_ring->napi); |
2095 | } |
2096 | } |
2097 | } |
2098 | |
2099 | int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, |
2100 | struct net_device *netdev) |
2101 | { |
2102 | int ring; |
2103 | struct qlcnic_host_sds_ring *sds_ring; |
2104 | struct qlcnic_host_tx_ring *tx_ring; |
2105 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
2106 | |
2107 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
2108 | return -ENOMEM; |
2109 | |
2110 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
2111 | sds_ring = &recv_ctx->sds_rings[ring]; |
2112 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
2113 | if (!(adapter->flags & QLCNIC_TX_INTR_SHARED)) |
2114 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
2115 | poll: qlcnic_83xx_rx_poll); |
2116 | else |
2117 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
2118 | poll: qlcnic_83xx_msix_sriov_vf_poll); |
2119 | |
2120 | } else { |
2121 | netif_napi_add(dev: netdev, napi: &sds_ring->napi, |
2122 | poll: qlcnic_83xx_poll); |
2123 | } |
2124 | } |
2125 | |
2126 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
2127 | qlcnic_free_sds_rings(recv_ctx); |
2128 | return -ENOMEM; |
2129 | } |
2130 | |
2131 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2132 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { |
2133 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
2134 | tx_ring = &adapter->tx_ring[ring]; |
2135 | netif_napi_add_tx(dev: netdev, napi: &tx_ring->napi, |
2136 | poll: qlcnic_83xx_msix_tx_poll); |
2137 | } |
2138 | } |
2139 | |
2140 | return 0; |
2141 | } |
2142 | |
2143 | void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) |
2144 | { |
2145 | int ring; |
2146 | struct qlcnic_host_sds_ring *sds_ring; |
2147 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
2148 | struct qlcnic_host_tx_ring *tx_ring; |
2149 | |
2150 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
2151 | sds_ring = &recv_ctx->sds_rings[ring]; |
2152 | netif_napi_del(napi: &sds_ring->napi); |
2153 | } |
2154 | |
2155 | qlcnic_free_sds_rings(adapter->recv_ctx); |
2156 | |
2157 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2158 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { |
2159 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
2160 | tx_ring = &adapter->tx_ring[ring]; |
2161 | netif_napi_del(napi: &tx_ring->napi); |
2162 | } |
2163 | } |
2164 | |
2165 | qlcnic_free_tx_rings(adapter); |
2166 | } |
2167 | |
2168 | static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, |
2169 | int ring, u64 sts_data[]) |
2170 | { |
2171 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
2172 | struct sk_buff *skb; |
2173 | struct qlcnic_host_rds_ring *rds_ring; |
2174 | int index, length; |
2175 | |
2176 | if (unlikely(ring >= adapter->max_rds_rings)) |
2177 | return; |
2178 | |
2179 | rds_ring = &recv_ctx->rds_rings[ring]; |
2180 | index = qlcnic_83xx_hndl(sts_data[0]); |
2181 | if (unlikely(index >= rds_ring->num_desc)) |
2182 | return; |
2183 | |
2184 | length = qlcnic_83xx_pktln(sts_data[0]); |
2185 | |
2186 | skb = qlcnic_process_rxbuf(adapter, ring: rds_ring, index, STATUS_CKSUM_OK); |
2187 | if (!skb) |
2188 | return; |
2189 | |
2190 | if (length > rds_ring->skb_size) |
2191 | skb_put(skb, len: rds_ring->skb_size); |
2192 | else |
2193 | skb_put(skb, len: length); |
2194 | |
2195 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) |
2196 | adapter->ahw->diag_cnt++; |
2197 | else |
2198 | dump_skb(skb, adapter); |
2199 | |
2200 | dev_kfree_skb_any(skb); |
2201 | return; |
2202 | } |
2203 | |
2204 | void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
2205 | { |
2206 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
2207 | struct status_desc *desc; |
2208 | u64 sts_data[2]; |
2209 | int ring, opcode; |
2210 | u32 consumer = sds_ring->consumer; |
2211 | |
2212 | desc = &sds_ring->desc_head[consumer]; |
2213 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); |
2214 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); |
2215 | opcode = qlcnic_83xx_opcode(sts_data[1]); |
2216 | if (!opcode) |
2217 | return; |
2218 | |
2219 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); |
2220 | qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); |
2221 | desc = &sds_ring->desc_head[consumer]; |
2222 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); |
2223 | consumer = get_next_index(consumer, sds_ring->num_desc); |
2224 | sds_ring->consumer = consumer; |
2225 | writel(val: consumer, addr: sds_ring->crb_sts_consumer); |
2226 | } |
2227 | |