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004b26b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
577ae39d JK |
2 | /* |
3 | * QLogic qlcnic NIC Driver | |
4 | * Copyright (c) 2009-2013 QLogic Corporation | |
577ae39d JK |
5 | */ |
6 | ||
c70001a9 SC |
7 | #include <linux/netdevice.h> |
8 | #include <linux/if_vlan.h> | |
9 | #include <net/ip.h> | |
10 | #include <linux/ipv6.h> | |
1bcac3b0 | 11 | #include <net/checksum.h> |
3620af0e | 12 | #include <linux/printk.h> |
c70001a9 SC |
13 | |
14 | #include "qlcnic.h" | |
15 | ||
381709de SS |
16 | #define QLCNIC_TX_ETHER_PKT 0x01 |
17 | #define QLCNIC_TX_TCP_PKT 0x02 | |
18 | #define QLCNIC_TX_UDP_PKT 0x03 | |
19 | #define QLCNIC_TX_IP_PKT 0x04 | |
20 | #define QLCNIC_TX_TCP_LSO 0x05 | |
21 | #define QLCNIC_TX_TCP_LSO6 0x06 | |
22 | #define QLCNIC_TX_ENCAP_PKT 0x07 | |
23 | #define QLCNIC_TX_ENCAP_LSO 0x08 | |
24 | #define QLCNIC_TX_TCPV6_PKT 0x0b | |
25 | #define QLCNIC_TX_UDPV6_PKT 0x0c | |
26 | ||
27 | #define QLCNIC_FLAGS_VLAN_TAGGED 0x10 | |
28 | #define QLCNIC_FLAGS_VLAN_OOB 0x40 | |
c70001a9 SC |
29 | |
30 | #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \ | |
31 | (cmd_desc)->vlan_TCI = cpu_to_le16(v); | |
32 | #define qlcnic_set_cmd_desc_port(cmd_desc, var) \ | |
33 | ((cmd_desc)->port_ctxid |= ((var) & 0x0F)) | |
34 | #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \ | |
35 | ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0)) | |
36 | ||
37 | #define qlcnic_set_tx_port(_desc, _port) \ | |
38 | ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0)) | |
39 | ||
40 | #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \ | |
41 | ((_desc)->flags_opcode |= \ | |
42 | cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7))) | |
43 | ||
44 | #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \ | |
45 | ((_desc)->nfrags__length = \ | |
46 | cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8))) | |
47 | ||
48 | /* owner bits of status_desc */ | |
49 | #define STATUS_OWNER_HOST (0x1ULL << 56) | |
50 | #define STATUS_OWNER_PHANTOM (0x2ULL << 56) | |
51 | ||
52 | /* Status descriptor: | |
53 | 0-3 port, 4-7 status, 8-11 type, 12-27 total_length | |
54 | 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset | |
55 | 53-55 desc_cnt, 56-57 owner, 58-63 opcode | |
56 | */ | |
57 | #define qlcnic_get_sts_port(sts_data) \ | |
58 | ((sts_data) & 0x0F) | |
59 | #define qlcnic_get_sts_status(sts_data) \ | |
60 | (((sts_data) >> 4) & 0x0F) | |
61 | #define qlcnic_get_sts_type(sts_data) \ | |
62 | (((sts_data) >> 8) & 0x0F) | |
63 | #define qlcnic_get_sts_totallength(sts_data) \ | |
64 | (((sts_data) >> 12) & 0xFFFF) | |
65 | #define qlcnic_get_sts_refhandle(sts_data) \ | |
66 | (((sts_data) >> 28) & 0xFFFF) | |
67 | #define qlcnic_get_sts_prot(sts_data) \ | |
68 | (((sts_data) >> 44) & 0x0F) | |
69 | #define qlcnic_get_sts_pkt_offset(sts_data) \ | |
70 | (((sts_data) >> 48) & 0x1F) | |
71 | #define qlcnic_get_sts_desc_cnt(sts_data) \ | |
72 | (((sts_data) >> 53) & 0x7) | |
73 | #define qlcnic_get_sts_opcode(sts_data) \ | |
74 | (((sts_data) >> 58) & 0x03F) | |
75 | ||
76 | #define qlcnic_get_lro_sts_refhandle(sts_data) \ | |
5796bd04 | 77 | ((sts_data) & 0x07FFF) |
c70001a9 SC |
78 | #define qlcnic_get_lro_sts_length(sts_data) \ |
79 | (((sts_data) >> 16) & 0x0FFFF) | |
80 | #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \ | |
81 | (((sts_data) >> 32) & 0x0FF) | |
82 | #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \ | |
83 | (((sts_data) >> 40) & 0x0FF) | |
84 | #define qlcnic_get_lro_sts_timestamp(sts_data) \ | |
85 | (((sts_data) >> 48) & 0x1) | |
86 | #define qlcnic_get_lro_sts_type(sts_data) \ | |
87 | (((sts_data) >> 49) & 0x7) | |
88 | #define qlcnic_get_lro_sts_push_flag(sts_data) \ | |
89 | (((sts_data) >> 52) & 0x1) | |
90 | #define qlcnic_get_lro_sts_seq_number(sts_data) \ | |
91 | ((sts_data) & 0x0FFFFFFFF) | |
92 | #define qlcnic_get_lro_sts_mss(sts_data1) \ | |
93 | ((sts_data1 >> 32) & 0x0FFFF) | |
94 | ||
99e85879 SS |
95 | #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff) |
96 | ||
c70001a9 SC |
97 | /* opcode field in status_desc */ |
98 | #define QLCNIC_SYN_OFFLOAD 0x03 | |
99 | #define QLCNIC_RXPKT_DESC 0x04 | |
100 | #define QLCNIC_OLD_RXPKT_DESC 0x3f | |
101 | #define QLCNIC_RESPONSE_DESC 0x05 | |
102 | #define QLCNIC_LRO_DESC 0x12 | |
103 | ||
4be41e92 SC |
104 | #define QLCNIC_TCP_HDR_SIZE 20 |
105 | #define QLCNIC_TCP_TS_OPTION_SIZE 12 | |
106 | #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63) | |
107 | #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM) | |
108 | ||
109 | #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE) | |
110 | ||
c70001a9 SC |
111 | /* for status field in status_desc */ |
112 | #define STATUS_CKSUM_LOOP 0 | |
113 | #define STATUS_CKSUM_OK 2 | |
d17dd0d9 | 114 | |
4be41e92 SC |
115 | #define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF) |
116 | #define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF) | |
117 | #define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7) | |
118 | #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF) | |
119 | #define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF) | |
120 | #define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF) | |
121 | #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF) | |
122 | #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF) | |
123 | #define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7) | |
124 | #define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1) | |
125 | #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1) | |
126 | #define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1) | |
127 | #define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1) | |
128 | ||
21041400 | 129 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, |
130 | int max); | |
131 | ||
132 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *, | |
133 | struct qlcnic_host_rds_ring *, | |
134 | u16, u16); | |
4be41e92 | 135 | |
b3f7de83 | 136 | static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan) |
4be41e92 | 137 | { |
b3f7de83 | 138 | return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff)); |
4be41e92 SC |
139 | } |
140 | ||
141 | static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, | |
142 | u16 handle, u8 ring_id) | |
143 | { | |
15ca140f | 144 | if (qlcnic_83xx_check(adapter)) |
4be41e92 SC |
145 | return handle | (ring_id << 15); |
146 | else | |
147 | return handle; | |
148 | } | |
149 | ||
53643a75 SS |
150 | static inline int qlcnic_82xx_is_lb_pkt(u64 sts_data) |
151 | { | |
152 | return (qlcnic_get_sts_status(sts_data) == STATUS_CKSUM_LOOP) ? 1 : 0; | |
153 | } | |
154 | ||
e0d138d9 SS |
155 | static void qlcnic_delete_rx_list_mac(struct qlcnic_adapter *adapter, |
156 | struct qlcnic_filter *fil, | |
157 | void *addr, u16 vlan_id) | |
158 | { | |
159 | int ret; | |
160 | u8 op; | |
161 | ||
162 | op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; | |
163 | ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op); | |
164 | if (ret) | |
165 | return; | |
166 | ||
167 | op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; | |
168 | ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op); | |
169 | if (!ret) { | |
170 | hlist_del(&fil->fnode); | |
171 | adapter->rx_fhash.fnum--; | |
172 | } | |
173 | } | |
174 | ||
175 | static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head, | |
176 | void *addr, u16 vlan_id) | |
177 | { | |
178 | struct qlcnic_filter *tmp_fil = NULL; | |
179 | struct hlist_node *n; | |
180 | ||
181 | hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { | |
6878f79a | 182 | if (ether_addr_equal(tmp_fil->faddr, addr) && |
e0d138d9 SS |
183 | tmp_fil->vlan_id == vlan_id) |
184 | return tmp_fil; | |
185 | } | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
21041400 | 190 | static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, |
191 | struct sk_buff *skb, int loopback_pkt, u16 vlan_id) | |
53643a75 SS |
192 | { |
193 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); | |
194 | struct qlcnic_filter *fil, *tmp_fil; | |
53643a75 SS |
195 | struct hlist_head *head; |
196 | unsigned long time; | |
197 | u64 src_addr = 0; | |
e0d138d9 | 198 | u8 hindex, op; |
53643a75 SS |
199 | int ret; |
200 | ||
b3f7de83 SC |
201 | if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff)) |
202 | vlan_id = 0; | |
203 | ||
53643a75 | 204 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
b3f7de83 | 205 | hindex = qlcnic_mac_hash(src_addr, vlan_id) & |
e0d138d9 | 206 | (adapter->fhash.fbucket_size - 1); |
53643a75 SS |
207 | |
208 | if (loopback_pkt) { | |
209 | if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax) | |
210 | return; | |
211 | ||
53643a75 SS |
212 | head = &(adapter->rx_fhash.fhead[hindex]); |
213 | ||
e0d138d9 SS |
214 | tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); |
215 | if (tmp_fil) { | |
216 | time = tmp_fil->ftime; | |
217 | if (time_after(jiffies, QLCNIC_READD_AGE * HZ + time)) | |
218 | tmp_fil->ftime = jiffies; | |
219 | return; | |
53643a75 SS |
220 | } |
221 | ||
222 | fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); | |
223 | if (!fil) | |
224 | return; | |
225 | ||
226 | fil->ftime = jiffies; | |
227 | memcpy(fil->faddr, &src_addr, ETH_ALEN); | |
228 | fil->vlan_id = vlan_id; | |
229 | spin_lock(&adapter->rx_mac_learn_lock); | |
230 | hlist_add_head(&(fil->fnode), head); | |
231 | adapter->rx_fhash.fnum++; | |
232 | spin_unlock(&adapter->rx_mac_learn_lock); | |
233 | } else { | |
e0d138d9 | 234 | head = &adapter->fhash.fhead[hindex]; |
53643a75 | 235 | |
e0d138d9 | 236 | spin_lock(&adapter->mac_learn_lock); |
53643a75 | 237 | |
e0d138d9 SS |
238 | tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); |
239 | if (tmp_fil) { | |
53643a75 SS |
240 | op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; |
241 | ret = qlcnic_sre_macaddr_change(adapter, | |
242 | (u8 *)&src_addr, | |
243 | vlan_id, op); | |
244 | if (!ret) { | |
e0d138d9 SS |
245 | hlist_del(&tmp_fil->fnode); |
246 | adapter->fhash.fnum--; | |
53643a75 | 247 | } |
e0d138d9 SS |
248 | |
249 | spin_unlock(&adapter->mac_learn_lock); | |
250 | ||
251 | return; | |
53643a75 | 252 | } |
e0d138d9 SS |
253 | |
254 | spin_unlock(&adapter->mac_learn_lock); | |
255 | ||
256 | head = &adapter->rx_fhash.fhead[hindex]; | |
257 | ||
258 | spin_lock(&adapter->rx_mac_learn_lock); | |
259 | ||
260 | tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); | |
261 | if (tmp_fil) | |
262 | qlcnic_delete_rx_list_mac(adapter, tmp_fil, &src_addr, | |
263 | vlan_id); | |
264 | ||
53643a75 SS |
265 | spin_unlock(&adapter->rx_mac_learn_lock); |
266 | } | |
267 | } | |
268 | ||
7e2cf4fe | 269 | void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, |
c333fa0c | 270 | u16 vlan_id, struct qlcnic_host_tx_ring *tx_ring) |
c70001a9 SC |
271 | { |
272 | struct cmd_desc_type0 *hwdesc; | |
273 | struct qlcnic_nic_req *req; | |
274 | struct qlcnic_mac_req *mac_req; | |
275 | struct qlcnic_vlan_req *vlan_req; | |
276 | u32 producer; | |
277 | u64 word; | |
278 | ||
279 | producer = tx_ring->producer; | |
280 | hwdesc = &tx_ring->desc_head[tx_ring->producer]; | |
281 | ||
282 | req = (struct qlcnic_nic_req *)hwdesc; | |
283 | memset(req, 0, sizeof(struct qlcnic_nic_req)); | |
284 | req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23); | |
285 | ||
286 | word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16); | |
287 | req->req_hdr = cpu_to_le64(word); | |
288 | ||
289 | mac_req = (struct qlcnic_mac_req *)&(req->words[0]); | |
290 | mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; | |
4a99ab56 | 291 | memcpy(mac_req->mac_addr, uaddr, ETH_ALEN); |
c70001a9 SC |
292 | |
293 | vlan_req = (struct qlcnic_vlan_req *)&req->words[1]; | |
f80bc8fe | 294 | vlan_req->vlan_id = cpu_to_le16(vlan_id); |
c70001a9 SC |
295 | |
296 | tx_ring->producer = get_next_index(producer, tx_ring->num_desc); | |
297 | smp_mb(); | |
298 | } | |
299 | ||
d17dd0d9 | 300 | static void qlcnic_send_filter(struct qlcnic_adapter *adapter, |
d17dd0d9 | 301 | struct cmd_desc_type0 *first_desc, |
c333fa0c SS |
302 | struct sk_buff *skb, |
303 | struct qlcnic_host_tx_ring *tx_ring) | |
c70001a9 | 304 | { |
b3f7de83 SC |
305 | struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data); |
306 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); | |
b3f7de83 | 307 | u16 protocol = ntohs(skb->protocol); |
c70001a9 | 308 | struct qlcnic_filter *fil, *tmp_fil; |
c70001a9 | 309 | struct hlist_head *head; |
b3f7de83 | 310 | struct hlist_node *n; |
c70001a9 | 311 | u64 src_addr = 0; |
f80bc8fe | 312 | u16 vlan_id = 0; |
b3f7de83 | 313 | u8 hindex, hval; |
c70001a9 | 314 | |
d747c333 RB |
315 | if (ether_addr_equal(phdr->h_source, adapter->mac_addr)) |
316 | return; | |
317 | ||
318 | if (adapter->flags & QLCNIC_VLAN_FILTERING) { | |
b3f7de83 SC |
319 | if (protocol == ETH_P_8021Q) { |
320 | vh = (struct vlan_ethhdr *)skb->data; | |
321 | vlan_id = ntohs(vh->h_vlan_TCI); | |
df8a39de JP |
322 | } else if (skb_vlan_tag_present(skb)) { |
323 | vlan_id = skb_vlan_tag_get(skb); | |
b3f7de83 | 324 | } |
b3f7de83 | 325 | } |
c70001a9 | 326 | |
c70001a9 | 327 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
b3f7de83 SC |
328 | hval = qlcnic_mac_hash(src_addr, vlan_id); |
329 | hindex = hval & (adapter->fhash.fbucket_size - 1); | |
c70001a9 SC |
330 | head = &(adapter->fhash.fhead[hindex]); |
331 | ||
b67bfe0d | 332 | hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
e2072cdf | 333 | if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) && |
7e2cf4fe | 334 | tmp_fil->vlan_id == vlan_id) { |
d17dd0d9 | 335 | if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime)) |
7e2cf4fe | 336 | qlcnic_change_filter(adapter, &src_addr, |
c333fa0c | 337 | vlan_id, tx_ring); |
c70001a9 SC |
338 | tmp_fil->ftime = jiffies; |
339 | return; | |
340 | } | |
341 | } | |
342 | ||
ddfbac07 SS |
343 | if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) { |
344 | adapter->stats.mac_filter_limit_overrun++; | |
345 | return; | |
346 | } | |
347 | ||
c70001a9 SC |
348 | fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); |
349 | if (!fil) | |
350 | return; | |
351 | ||
c333fa0c | 352 | qlcnic_change_filter(adapter, &src_addr, vlan_id, tx_ring); |
c70001a9 SC |
353 | fil->ftime = jiffies; |
354 | fil->vlan_id = vlan_id; | |
355 | memcpy(fil->faddr, &src_addr, ETH_ALEN); | |
356 | spin_lock(&adapter->mac_learn_lock); | |
357 | hlist_add_head(&(fil->fnode), head); | |
358 | adapter->fhash.fnum++; | |
359 | spin_unlock(&adapter->mac_learn_lock); | |
360 | } | |
361 | ||
381709de SS |
362 | #define QLCNIC_ENCAP_VXLAN_PKT BIT_0 |
363 | #define QLCNIC_ENCAP_OUTER_L3_IP6 BIT_1 | |
364 | #define QLCNIC_ENCAP_INNER_L3_IP6 BIT_2 | |
365 | #define QLCNIC_ENCAP_INNER_L4_UDP BIT_3 | |
366 | #define QLCNIC_ENCAP_DO_L3_CSUM BIT_4 | |
367 | #define QLCNIC_ENCAP_DO_L4_CSUM BIT_5 | |
368 | ||
369 | static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter, | |
370 | struct cmd_desc_type0 *first_desc, | |
371 | struct sk_buff *skb, | |
372 | struct qlcnic_host_tx_ring *tx_ring) | |
373 | { | |
374 | u8 opcode = 0, inner_hdr_len = 0, outer_hdr_len = 0, total_hdr_len = 0; | |
375 | int copied, copy_len, descr_size; | |
376 | u32 producer = tx_ring->producer; | |
377 | struct cmd_desc_type0 *hwdesc; | |
378 | u16 flags = 0, encap_descr = 0; | |
379 | ||
380 | opcode = QLCNIC_TX_ETHER_PKT; | |
381 | encap_descr = QLCNIC_ENCAP_VXLAN_PKT; | |
382 | ||
383 | if (skb_is_gso(skb)) { | |
384 | inner_hdr_len = skb_inner_transport_header(skb) + | |
385 | inner_tcp_hdrlen(skb) - | |
386 | skb_inner_mac_header(skb); | |
387 | ||
388 | /* VXLAN header size = 8 */ | |
389 | outer_hdr_len = skb_transport_offset(skb) + 8 + | |
390 | sizeof(struct udphdr); | |
391 | first_desc->outer_hdr_length = outer_hdr_len; | |
392 | total_hdr_len = inner_hdr_len + outer_hdr_len; | |
393 | encap_descr |= QLCNIC_ENCAP_DO_L3_CSUM | | |
394 | QLCNIC_ENCAP_DO_L4_CSUM; | |
395 | first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); | |
396 | first_desc->hdr_length = inner_hdr_len; | |
397 | ||
398 | /* Copy inner and outer headers in Tx descriptor(s) | |
399 | * If total_hdr_len > cmd_desc_type0, use multiple | |
400 | * descriptors | |
401 | */ | |
402 | copied = 0; | |
403 | descr_size = (int)sizeof(struct cmd_desc_type0); | |
404 | while (copied < total_hdr_len) { | |
405 | copy_len = min(descr_size, (total_hdr_len - copied)); | |
406 | hwdesc = &tx_ring->desc_head[producer]; | |
407 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
408 | skb_copy_from_linear_data_offset(skb, copied, | |
409 | (char *)hwdesc, | |
410 | copy_len); | |
411 | copied += copy_len; | |
412 | producer = get_next_index(producer, tx_ring->num_desc); | |
413 | } | |
414 | ||
415 | tx_ring->producer = producer; | |
416 | ||
417 | /* Make sure updated tx_ring->producer is visible | |
418 | * for qlcnic_tx_avail() | |
419 | */ | |
420 | smp_mb(); | |
421 | adapter->stats.encap_lso_frames++; | |
422 | ||
423 | opcode = QLCNIC_TX_ENCAP_LSO; | |
424 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
425 | if (inner_ip_hdr(skb)->version == 6) { | |
426 | if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
427 | encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP; | |
428 | } else { | |
429 | if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP) | |
430 | encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP; | |
431 | } | |
432 | ||
433 | adapter->stats.encap_tx_csummed++; | |
434 | opcode = QLCNIC_TX_ENCAP_PKT; | |
435 | } | |
436 | ||
437 | /* Prepare first 16 bits of byte offset 16 of Tx descriptor */ | |
438 | if (ip_hdr(skb)->version == 6) | |
439 | encap_descr |= QLCNIC_ENCAP_OUTER_L3_IP6; | |
440 | ||
441 | /* outer IP header's size in 32bit words size*/ | |
442 | encap_descr |= (skb_network_header_len(skb) >> 2) << 6; | |
443 | ||
444 | /* outer IP header offset */ | |
445 | encap_descr |= skb_network_offset(skb) << 10; | |
446 | first_desc->encap_descr = cpu_to_le16(encap_descr); | |
447 | ||
448 | first_desc->tcp_hdr_offset = skb_inner_transport_header(skb) - | |
449 | skb->data; | |
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 | ||
d17dd0d9 | 457 | static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter, |
012ec812 HM |
458 | struct cmd_desc_type0 *first_desc, struct sk_buff *skb, |
459 | struct qlcnic_host_tx_ring *tx_ring) | |
c70001a9 | 460 | { |
b25ddb00 | 461 | u8 l4proto, opcode = 0, hdr_len = 0, tag_vlan = 0; |
c70001a9 | 462 | u16 flags = 0, vlan_tci = 0; |
d17dd0d9 | 463 | int copied, offset, copy_len, size; |
c70001a9 SC |
464 | struct cmd_desc_type0 *hwdesc; |
465 | struct vlan_ethhdr *vh; | |
c70001a9 SC |
466 | u16 protocol = ntohs(skb->protocol); |
467 | u32 producer = tx_ring->producer; | |
468 | ||
469 | if (protocol == ETH_P_8021Q) { | |
470 | vh = (struct vlan_ethhdr *)skb->data; | |
381709de | 471 | flags = QLCNIC_FLAGS_VLAN_TAGGED; |
c70001a9 SC |
472 | vlan_tci = ntohs(vh->h_vlan_TCI); |
473 | protocol = ntohs(vh->h_vlan_encapsulated_proto); | |
b25ddb00 | 474 | tag_vlan = 1; |
df8a39de | 475 | } else if (skb_vlan_tag_present(skb)) { |
381709de | 476 | flags = QLCNIC_FLAGS_VLAN_OOB; |
df8a39de | 477 | vlan_tci = skb_vlan_tag_get(skb); |
b25ddb00 | 478 | tag_vlan = 1; |
c70001a9 | 479 | } |
91b7282b | 480 | if (unlikely(adapter->tx_pvid)) { |
b25ddb00 | 481 | if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED)) |
c70001a9 | 482 | return -EIO; |
b25ddb00 | 483 | if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED)) |
c70001a9 SC |
484 | goto set_flags; |
485 | ||
381709de | 486 | flags = QLCNIC_FLAGS_VLAN_OOB; |
91b7282b | 487 | vlan_tci = adapter->tx_pvid; |
c70001a9 SC |
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 | } | |
381709de | 497 | opcode = QLCNIC_TX_ETHER_PKT; |
3eead213 | 498 | if (skb_is_gso(skb)) { |
c70001a9 | 499 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
c70001a9 | 500 | first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
381709de SS |
501 | first_desc->hdr_length = hdr_len; |
502 | opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 : | |
503 | QLCNIC_TX_TCP_LSO; | |
c70001a9 SC |
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 | ||
381709de SS |
510 | if (flags & QLCNIC_FLAGS_VLAN_OOB) { |
511 | first_desc->hdr_length += VLAN_HLEN; | |
c70001a9 SC |
512 | first_desc->tcp_hdr_offset = VLAN_HLEN; |
513 | first_desc->ip_hdr_offset = VLAN_HLEN; | |
d17dd0d9 | 514 | |
c70001a9 | 515 | /* Only in case of TSO on vlan device */ |
381709de | 516 | flags |= QLCNIC_FLAGS_VLAN_TAGGED; |
c70001a9 SC |
517 | |
518 | /* Create a TSO vlan header template for firmware */ | |
c70001a9 SC |
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) - | |
d17dd0d9 | 523 | offset, hdr_len + VLAN_HLEN); |
c70001a9 SC |
524 | |
525 | vh = (struct vlan_ethhdr *)((char *) hwdesc + 2); | |
526 | skb_copy_from_linear_data(skb, vh, 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, 12, | |
d17dd0d9 SC |
531 | (char *)vh + 16, |
532 | copy_len - 16); | |
c70001a9 SC |
533 | copied = copy_len - VLAN_HLEN; |
534 | offset = 0; | |
c70001a9 SC |
535 | producer = get_next_index(producer, tx_ring->num_desc); |
536 | } | |
537 | ||
538 | while (copied < hdr_len) { | |
d17dd0d9 SC |
539 | size = (int)sizeof(struct cmd_desc_type0) - offset; |
540 | copy_len = min(size, (hdr_len - copied)); | |
c70001a9 SC |
541 | hwdesc = &tx_ring->desc_head[producer]; |
542 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
c70001a9 | 543 | skb_copy_from_linear_data_offset(skb, copied, |
d17dd0d9 SC |
544 | (char *)hwdesc + |
545 | offset, copy_len); | |
c70001a9 SC |
546 | copied += copy_len; |
547 | offset = 0; | |
c70001a9 SC |
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) { | |
c70001a9 SC |
556 | if (protocol == ETH_P_IP) { |
557 | l4proto = ip_hdr(skb)->protocol; | |
558 | ||
559 | if (l4proto == IPPROTO_TCP) | |
381709de | 560 | opcode = QLCNIC_TX_TCP_PKT; |
c70001a9 | 561 | else if (l4proto == IPPROTO_UDP) |
381709de | 562 | opcode = QLCNIC_TX_UDP_PKT; |
c70001a9 SC |
563 | } else if (protocol == ETH_P_IPV6) { |
564 | l4proto = ipv6_hdr(skb)->nexthdr; | |
565 | ||
566 | if (l4proto == IPPROTO_TCP) | |
381709de | 567 | opcode = QLCNIC_TX_TCPV6_PKT; |
c70001a9 | 568 | else if (l4proto == IPPROTO_UDP) |
381709de | 569 | opcode = QLCNIC_TX_UDPV6_PKT; |
c70001a9 SC |
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 | ||
d17dd0d9 SC |
579 | static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb, |
580 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
581 | { |
582 | struct qlcnic_skb_frag *nf; | |
d7840976 | 583 | skb_frag_t *frag; |
c70001a9 SC |
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 | ||
a14e3904 CJ |
590 | map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb), |
591 | DMA_TO_DEVICE); | |
592 | if (dma_mapping_error(&pdev->dev, map)) | |
c70001a9 SC |
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]; | |
c70001a9 SC |
601 | map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag), |
602 | DMA_TO_DEVICE); | |
603 | if (dma_mapping_error(&pdev->dev, 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]; | |
a14e3904 | 615 | dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); |
c70001a9 SC |
616 | } |
617 | ||
618 | nf = &pbuf->frag_array[0]; | |
a14e3904 | 619 | dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); |
c70001a9 SC |
620 | |
621 | out_err: | |
622 | return -ENOMEM; | |
623 | } | |
624 | ||
d17dd0d9 SC |
625 | static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb, |
626 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
627 | { |
628 | struct qlcnic_skb_frag *nf = &pbuf->frag_array[0]; | |
d17dd0d9 | 629 | int i, nr_frags = skb_shinfo(skb)->nr_frags; |
c70001a9 SC |
630 | |
631 | for (i = 0; i < nr_frags; i++) { | |
632 | nf = &pbuf->frag_array[i+1]; | |
a14e3904 | 633 | dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); |
c70001a9 SC |
634 | } |
635 | ||
636 | nf = &pbuf->frag_array[0]; | |
a14e3904 | 637 | dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); |
c70001a9 SC |
638 | pbuf->skb = NULL; |
639 | } | |
640 | ||
d17dd0d9 | 641 | static inline void qlcnic_clear_cmddesc(u64 *desc) |
c70001a9 SC |
642 | { |
643 | desc[0] = 0ULL; | |
644 | desc[2] = 0ULL; | |
645 | desc[7] = 0ULL; | |
646 | } | |
647 | ||
d17dd0d9 | 648 | netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
c70001a9 SC |
649 | { |
650 | struct qlcnic_adapter *adapter = netdev_priv(netdev); | |
012ec812 | 651 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
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; | |
d17dd0d9 SC |
657 | int i, k, frag_count, delta = 0; |
658 | u32 producer, num_txd; | |
381709de SS |
659 | u16 protocol; |
660 | bool l4_is_udp = false; | |
c70001a9 | 661 | |
c70001a9 | 662 | if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
012ec812 | 663 | netif_tx_stop_all_queues(netdev); |
c70001a9 SC |
664 | return NETDEV_TX_BUSY; |
665 | } | |
666 | ||
667 | if (adapter->flags & QLCNIC_MACSPOOF) { | |
668 | phdr = (struct ethhdr *)skb->data; | |
669 | if (!ether_addr_equal(phdr->h_source, adapter->mac_addr)) | |
670 | goto drop_packet; | |
671 | } | |
672 | ||
18afc102 | 673 | tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)]; |
012ec812 HM |
674 | num_txd = tx_ring->num_desc; |
675 | ||
c70001a9 | 676 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
012ec812 | 677 | |
c70001a9 SC |
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) { | |
c70001a9 SC |
682 | for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++) |
683 | delta += skb_frag_size(&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)) { | |
012ec812 | 692 | netif_tx_stop_queue(tx_ring->txq); |
d17dd0d9 | 693 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
012ec812 | 694 | netif_tx_start_queue(tx_ring->txq); |
d17dd0d9 | 695 | } else { |
f27c75b3 | 696 | tx_ring->tx_stats.xmit_off++; |
c70001a9 SC |
697 | return NETDEV_TX_BUSY; |
698 | } | |
699 | } | |
700 | ||
701 | producer = tx_ring->producer; | |
702 | pbuf = &tx_ring->cmd_buf_arr[producer]; | |
c70001a9 | 703 | pdev = adapter->pdev; |
d17dd0d9 SC |
704 | first_desc = &tx_ring->desc_head[producer]; |
705 | hwdesc = &tx_ring->desc_head[producer]; | |
c70001a9 SC |
706 | qlcnic_clear_cmddesc((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++) { | |
c70001a9 SC |
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((u64 *)hwdesc); | |
727 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
728 | } | |
729 | ||
730 | buffrag = &pbuf->frag_array[i]; | |
c70001a9 SC |
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 | ||
381709de SS |
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 | } | |
c70001a9 | 768 | |
fe1adc6b | 769 | if (adapter->drv_mac_learn) |
c333fa0c | 770 | qlcnic_send_filter(adapter, first_desc, skb, tx_ring); |
c70001a9 | 771 | |
f27c75b3 HM |
772 | tx_ring->tx_stats.tx_bytes += skb->len; |
773 | tx_ring->tx_stats.xmit_called++; | |
c70001a9 | 774 | |
9216a97a SC |
775 | /* Ensure writes are complete before HW fetches Tx descriptors */ |
776 | wmb(); | |
c70001a9 SC |
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 | ||
7f966452 | 789 | void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) |
c70001a9 SC |
790 | { |
791 | struct net_device *netdev = adapter->netdev; | |
792 | ||
793 | if (adapter->ahw->linkup && !linkup) { | |
794 | netdev_info(netdev, "NIC Link is down\n"); | |
795 | adapter->ahw->linkup = 0; | |
b84caae4 | 796 | netif_carrier_off(netdev); |
c70001a9 | 797 | } else if (!adapter->ahw->linkup && linkup) { |
092dfcf3 SS |
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(netdev, "NIC Link is up for loopback test\n"); | |
d9c602f0 | 805 | return; |
092dfcf3 | 806 | } |
d9c602f0 | 807 | |
c70001a9 | 808 | netdev_info(netdev, "NIC Link is up\n"); |
b84caae4 | 809 | netif_carrier_on(netdev); |
c70001a9 SC |
810 | } |
811 | } | |
812 | ||
d17dd0d9 SC |
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) | |
c70001a9 SC |
816 | { |
817 | struct sk_buff *skb; | |
818 | dma_addr_t dma; | |
819 | struct pci_dev *pdev = adapter->pdev; | |
820 | ||
821 | skb = netdev_alloc_skb(adapter->netdev, 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); | |
a14e3904 CJ |
828 | dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size, |
829 | DMA_FROM_DEVICE); | |
c70001a9 | 830 | |
a14e3904 | 831 | if (dma_mapping_error(&pdev->dev, dma)) { |
c70001a9 SC |
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, | |
4be41e92 SC |
844 | struct qlcnic_host_rds_ring *rds_ring, |
845 | u8 ring_id) | |
c70001a9 SC |
846 | { |
847 | struct rcv_desc *pdesc; | |
848 | struct qlcnic_rx_buffer *buffer; | |
849 | int count = 0; | |
4be41e92 | 850 | uint32_t producer, handle; |
c70001a9 SC |
851 | struct list_head *head; |
852 | ||
853 | if (!spin_trylock(&rds_ring->lock)) | |
854 | return; | |
855 | ||
856 | producer = rds_ring->producer; | |
c70001a9 | 857 | head = &rds_ring->free_list; |
d17dd0d9 | 858 | while (!list_empty(head)) { |
c70001a9 SC |
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 | } | |
c70001a9 SC |
865 | count++; |
866 | list_del(&buffer->list); | |
867 | ||
868 | /* make a rcv descriptor */ | |
869 | pdesc = &rds_ring->desc_head[producer]; | |
4be41e92 SC |
870 | handle = qlcnic_get_ref_handle(adapter, |
871 | buffer->ref_handle, ring_id); | |
872 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 SC |
873 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
874 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
c70001a9 SC |
875 | producer = get_next_index(producer, rds_ring->num_desc); |
876 | } | |
c70001a9 SC |
877 | if (count) { |
878 | rds_ring->producer = producer; | |
879 | writel((producer - 1) & (rds_ring->num_desc - 1), | |
d17dd0d9 | 880 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
881 | } |
882 | spin_unlock(&rds_ring->lock); | |
883 | } | |
884 | ||
4be41e92 SC |
885 | static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter, |
886 | struct qlcnic_host_tx_ring *tx_ring, | |
887 | int budget) | |
c70001a9 SC |
888 | { |
889 | u32 sw_consumer, hw_consumer; | |
d17dd0d9 | 890 | int i, done, count = 0; |
c70001a9 SC |
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; | |
c70001a9 | 895 | |
a02bdd42 | 896 | if (!spin_trylock(&tx_ring->tx_clean_lock)) |
34e8c406 HM |
897 | return 1; |
898 | ||
c70001a9 SC |
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]; | |
a14e3904 CJ |
906 | dma_unmap_single(&pdev->dev, frag->dma, frag->length, |
907 | DMA_TO_DEVICE); | |
c70001a9 SC |
908 | frag->dma = 0ULL; |
909 | for (i = 1; i < buffer->frag_count; i++) { | |
910 | frag++; | |
a14e3904 CJ |
911 | dma_unmap_page(&pdev->dev, frag->dma, |
912 | frag->length, DMA_TO_DEVICE); | |
c70001a9 SC |
913 | frag->dma = 0ULL; |
914 | } | |
f27c75b3 | 915 | tx_ring->tx_stats.xmit_finished++; |
c70001a9 SC |
916 | dev_kfree_skb_any(buffer->skb); |
917 | buffer->skb = NULL; | |
918 | } | |
919 | ||
920 | sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); | |
4be41e92 | 921 | if (++count >= budget) |
c70001a9 SC |
922 | break; |
923 | } | |
924 | ||
a02bdd42 SS |
925 | tx_ring->sw_consumer = sw_consumer; |
926 | ||
c70001a9 | 927 | if (count && netif_running(netdev)) { |
c70001a9 | 928 | smp_mb(); |
012ec812 HM |
929 | if (netif_tx_queue_stopped(tx_ring->txq) && |
930 | netif_carrier_ok(netdev)) { | |
c70001a9 | 931 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
012ec812 | 932 | netif_tx_wake_queue(tx_ring->txq); |
f27c75b3 | 933 | tx_ring->tx_stats.xmit_on++; |
c70001a9 SC |
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); | |
a02bdd42 SS |
953 | |
954 | spin_unlock(&tx_ring->tx_clean_lock); | |
c70001a9 SC |
955 | |
956 | return done; | |
957 | } | |
958 | ||
959 | static int qlcnic_poll(struct napi_struct *napi, int budget) | |
960 | { | |
4be41e92 | 961 | int tx_complete, work_done; |
d17dd0d9 SC |
962 | struct qlcnic_host_sds_ring *sds_ring; |
963 | struct qlcnic_adapter *adapter; | |
012ec812 | 964 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 965 | |
d17dd0d9 SC |
966 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
967 | adapter = sds_ring->adapter; | |
012ec812 HM |
968 | tx_ring = sds_ring->tx_ring; |
969 | ||
970 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, | |
4be41e92 | 971 | budget); |
c70001a9 | 972 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
f31ec95f SS |
973 | |
974 | /* Check if we need a repoll */ | |
975 | if (!tx_complete) | |
976 | work_done = budget; | |
977 | ||
978 | if (work_done < budget) { | |
6ad20165 | 979 | napi_complete_done(&sds_ring->napi, work_done); |
012ec812 | 980 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
2cc5752e | 981 | qlcnic_enable_sds_intr(adapter, sds_ring); |
012ec812 HM |
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(&tx_ring->napi); | |
1001 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
1002 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
f31ec95f SS |
1003 | } else { |
1004 | /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/ | |
1005 | work_done = budget; | |
c70001a9 SC |
1006 | } |
1007 | ||
1008 | return work_done; | |
1009 | } | |
1010 | ||
1011 | static int qlcnic_rx_poll(struct napi_struct *napi, int budget) | |
1012 | { | |
d17dd0d9 SC |
1013 | struct qlcnic_host_sds_ring *sds_ring; |
1014 | struct qlcnic_adapter *adapter; | |
c70001a9 SC |
1015 | int work_done; |
1016 | ||
d17dd0d9 SC |
1017 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1018 | adapter = sds_ring->adapter; | |
1019 | ||
c70001a9 SC |
1020 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
1021 | ||
1022 | if (work_done < budget) { | |
6ad20165 | 1023 | napi_complete_done(&sds_ring->napi, work_done); |
c70001a9 | 1024 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
2cc5752e | 1025 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1026 | } |
1027 | ||
1028 | return work_done; | |
1029 | } | |
1030 | ||
d17dd0d9 SC |
1031 | static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, |
1032 | struct qlcnic_fw_msg *msg) | |
c70001a9 SC |
1033 | { |
1034 | u32 cable_OUI; | |
d17dd0d9 SC |
1035 | u16 cable_len, link_speed; |
1036 | u8 link_status, module, duplex, autoneg, lb_status = 0; | |
c70001a9 SC |
1037 | struct net_device *netdev = adapter->netdev; |
1038 | ||
79788450 | 1039 | adapter->ahw->has_link_events = 1; |
c70001a9 SC |
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) | |
d17dd0d9 SC |
1052 | dev_info(&netdev->dev, |
1053 | "unsupported cable: OUI 0x%x, length %d\n", | |
1054 | cable_OUI, cable_len); | |
c70001a9 SC |
1055 | else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) |
1056 | dev_info(&netdev->dev, "unsupported cable length %d\n", | |
d17dd0d9 | 1057 | cable_len); |
c70001a9 SC |
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, link_status); | |
1064 | ||
1065 | if (duplex == LINKEVENT_FULL_DUPLEX) | |
79788450 | 1066 | adapter->ahw->link_duplex = DUPLEX_FULL; |
c70001a9 | 1067 | else |
79788450 | 1068 | adapter->ahw->link_duplex = DUPLEX_HALF; |
c70001a9 | 1069 | |
79788450 SC |
1070 | adapter->ahw->module_type = module; |
1071 | adapter->ahw->link_autoneg = autoneg; | |
c70001a9 SC |
1072 | |
1073 | if (link_status) { | |
79788450 | 1074 | adapter->ahw->link_speed = link_speed; |
c70001a9 | 1075 | } else { |
79788450 SC |
1076 | adapter->ahw->link_speed = SPEED_UNKNOWN; |
1077 | adapter->ahw->link_duplex = DUPLEX_UNKNOWN; | |
c70001a9 SC |
1078 | } |
1079 | } | |
1080 | ||
d17dd0d9 SC |
1081 | static void qlcnic_handle_fw_message(int desc_cnt, int index, |
1082 | struct qlcnic_host_sds_ring *sds_ring) | |
c70001a9 SC |
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); | |
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"); | |
b9c11984 | 1115 | adapter->ahw->diag_cnt = -EINPROGRESS; |
c70001a9 SC |
1116 | break; |
1117 | case 2: | |
1118 | dev_info(dev, "loopback cable is not connected\n"); | |
b9c11984 | 1119 | adapter->ahw->diag_cnt = -ENODEV; |
c70001a9 SC |
1120 | break; |
1121 | default: | |
d17dd0d9 SC |
1122 | dev_info(dev, |
1123 | "loopback configure request failed, err %x\n", | |
1124 | ret); | |
b9c11984 | 1125 | adapter->ahw->diag_cnt = -EIO; |
c70001a9 SC |
1126 | break; |
1127 | } | |
1128 | break; | |
2d8ebcab | 1129 | case QLCNIC_C2H_OPCODE_GET_DCB_AEN: |
1de899d3 | 1130 | qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg); |
2d8ebcab | 1131 | break; |
c70001a9 SC |
1132 | default: |
1133 | break; | |
1134 | } | |
1135 | } | |
1136 | ||
21041400 | 1137 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
1138 | struct qlcnic_host_rds_ring *ring, | |
1139 | u16 index, u16 cksum) | |
c70001a9 SC |
1140 | { |
1141 | struct qlcnic_rx_buffer *buffer; | |
1142 | struct sk_buff *skb; | |
1143 | ||
4be41e92 | 1144 | buffer = &ring->rx_buf_arr[index]; |
c70001a9 SC |
1145 | if (unlikely(buffer->skb == NULL)) { |
1146 | WARN_ON(1); | |
1147 | return NULL; | |
1148 | } | |
1149 | ||
a14e3904 CJ |
1150 | dma_unmap_single(&adapter->pdev->dev, buffer->dma, ring->dma_size, |
1151 | DMA_FROM_DEVICE); | |
c70001a9 SC |
1152 | |
1153 | skb = buffer->skb; | |
c70001a9 | 1154 | if (likely((adapter->netdev->features & NETIF_F_RXCSUM) && |
d17dd0d9 | 1155 | (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) { |
c70001a9 SC |
1156 | adapter->stats.csummed++; |
1157 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1158 | } else { | |
1159 | skb_checksum_none_assert(skb); | |
1160 | } | |
1161 | ||
4be41e92 | 1162 | |
c70001a9 SC |
1163 | buffer->skb = NULL; |
1164 | ||
1165 | return skb; | |
1166 | } | |
1167 | ||
d17dd0d9 SC |
1168 | static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, |
1169 | struct sk_buff *skb, u16 *vlan_tag) | |
c70001a9 SC |
1170 | { |
1171 | struct ethhdr *eth_hdr; | |
1172 | ||
1173 | if (!__vlan_get_tag(skb, vlan_tag)) { | |
d17dd0d9 | 1174 | eth_hdr = (struct ethhdr *)skb->data; |
c70001a9 SC |
1175 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); |
1176 | skb_pull(skb, VLAN_HLEN); | |
1177 | } | |
91b7282b | 1178 | if (!adapter->rx_pvid) |
c70001a9 SC |
1179 | return 0; |
1180 | ||
91b7282b | 1181 | if (*vlan_tag == adapter->rx_pvid) { |
c70001a9 SC |
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, | |
d17dd0d9 SC |
1194 | struct qlcnic_host_sds_ring *sds_ring, int ring, |
1195 | u64 sts_data0) | |
c70001a9 SC |
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; | |
53643a75 SS |
1202 | int index, length, cksum, pkt_offset, is_lb_pkt; |
1203 | u16 vid = 0xffff, t_vid; | |
c70001a9 SC |
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]; | |
c70001a9 SC |
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, rds_ring, index, cksum); | |
1220 | if (!skb) | |
1221 | return buffer; | |
1222 | ||
ddfbac07 | 1223 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1224 | t_vid = 0; |
1225 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1226 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1227 | } |
1228 | ||
c70001a9 SC |
1229 | if (length > rds_ring->skb_size) |
1230 | skb_put(skb, rds_ring->skb_size); | |
1231 | else | |
1232 | skb_put(skb, length); | |
1233 | ||
1234 | if (pkt_offset) | |
1235 | skb_pull(skb, 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, netdev); | |
1244 | ||
1245 | if (vid != 0xffff) | |
86a9bad3 | 1246 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1247 | |
1248 | napi_gro_receive(&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, | |
d17dd0d9 | 1262 | int ring, u64 sts_data0, u64 sts_data1) |
c70001a9 SC |
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; | |
776e7bde | 1270 | struct ipv6hdr *ipv6h; |
c70001a9 SC |
1271 | struct tcphdr *th; |
1272 | bool push, timestamp; | |
53643a75 SS |
1273 | int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt; |
1274 | u16 lro_length, length, data_offset, t_vid, vid = 0xffff; | |
c70001a9 | 1275 | u32 seq_number; |
c70001a9 | 1276 | |
462bed48 | 1277 | if (unlikely(ring >= adapter->max_rds_rings)) |
c70001a9 SC |
1278 | return NULL; |
1279 | ||
1280 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1281 | ||
1282 | index = qlcnic_get_lro_sts_refhandle(sts_data0); | |
462bed48 | 1283 | if (unlikely(index >= rds_ring->num_desc)) |
c70001a9 SC |
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, rds_ring, index, STATUS_CKSUM_OK); | |
1296 | if (!skb) | |
1297 | return buffer; | |
1298 | ||
ddfbac07 | 1299 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1300 | t_vid = 0; |
1301 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1302 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1303 | } |
1304 | ||
c70001a9 SC |
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, lro_length + data_offset); | |
c70001a9 SC |
1311 | skb_pull(skb, 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, netdev); | |
776e7bde | 1320 | |
069048f1 | 1321 | if (ntohs(skb->protocol) == ETH_P_IPV6) { |
776e7bde SS |
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; | |
1bcac3b0 | 1330 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
776e7bde | 1331 | iph->tot_len = htons(length); |
776e7bde SS |
1332 | } |
1333 | ||
c70001a9 SC |
1334 | th->psh = push; |
1335 | th->seq = htonl(seq_number); | |
c70001a9 SC |
1336 | length = skb->len; |
1337 | ||
bd69ba79 | 1338 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
c70001a9 | 1339 | skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1); |
bd69ba79 MT |
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 | } | |
c70001a9 SC |
1345 | |
1346 | if (vid != 0xffff) | |
86a9bad3 | 1347 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1348 | netif_receive_skb(skb); |
1349 | ||
1350 | adapter->stats.lro_pkts++; | |
1351 | adapter->stats.lrobytes += length; | |
1352 | ||
1353 | return buffer; | |
1354 | } | |
1355 | ||
21041400 | 1356 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) |
c70001a9 | 1357 | { |
d17dd0d9 | 1358 | struct qlcnic_host_rds_ring *rds_ring; |
c70001a9 SC |
1359 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1360 | struct list_head *cur; | |
1361 | struct status_desc *desc; | |
1362 | struct qlcnic_rx_buffer *rxbuf; | |
4be41e92 | 1363 | int opcode, desc_cnt, count = 0; |
c70001a9 | 1364 | u64 sts_data0, sts_data1; |
4be41e92 | 1365 | u8 ring; |
c70001a9 SC |
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); | |
c70001a9 SC |
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); | |
d17dd0d9 SC |
1382 | rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, |
1383 | sts_data0); | |
c70001a9 SC |
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, consumer, sds_ring); | |
d66aea44 | 1393 | goto skip; |
c70001a9 SC |
1394 | default: |
1395 | goto skip; | |
1396 | } | |
c70001a9 SC |
1397 | WARN_ON(desc_cnt > 1); |
1398 | ||
1399 | if (likely(rxbuf)) | |
1400 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1401 | else | |
1402 | adapter->stats.null_rxbuf++; | |
c70001a9 SC |
1403 | skip: |
1404 | for (; desc_cnt > 0; desc_cnt--) { | |
1405 | desc = &sds_ring->desc_head[consumer]; | |
4be41e92 | 1406 | desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW; |
c70001a9 SC |
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++) { | |
d17dd0d9 | 1413 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
c70001a9 SC |
1414 | if (!list_empty(&sds_ring->free_list[ring])) { |
1415 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
d17dd0d9 SC |
1416 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1417 | list); | |
c70001a9 SC |
1418 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); |
1419 | } | |
1420 | spin_lock(&rds_ring->lock); | |
1421 | list_splice_tail_init(&sds_ring->free_list[ring], | |
d17dd0d9 | 1422 | &rds_ring->free_list); |
c70001a9 SC |
1423 | spin_unlock(&rds_ring->lock); |
1424 | } | |
1425 | ||
4be41e92 | 1426 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); |
c70001a9 SC |
1427 | } |
1428 | ||
1429 | if (count) { | |
1430 | sds_ring->consumer = consumer; | |
1431 | writel(consumer, sds_ring->crb_sts_consumer); | |
1432 | } | |
1433 | ||
1434 | return count; | |
1435 | } | |
1436 | ||
d17dd0d9 | 1437 | void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, |
4be41e92 | 1438 | struct qlcnic_host_rds_ring *rds_ring, u8 ring_id) |
c70001a9 SC |
1439 | { |
1440 | struct rcv_desc *pdesc; | |
1441 | struct qlcnic_rx_buffer *buffer; | |
1442 | int count = 0; | |
4be41e92 | 1443 | u32 producer, handle; |
c70001a9 SC |
1444 | struct list_head *head; |
1445 | ||
1446 | producer = rds_ring->producer; | |
c70001a9 | 1447 | head = &rds_ring->free_list; |
d17dd0d9 | 1448 | |
c70001a9 SC |
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(&buffer->list); | |
1460 | ||
1461 | /* make a rcv descriptor */ | |
1462 | pdesc = &rds_ring->desc_head[producer]; | |
1463 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
4be41e92 SC |
1464 | handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle, |
1465 | ring_id); | |
1466 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 | 1467 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
c70001a9 SC |
1468 | producer = get_next_index(producer, rds_ring->num_desc); |
1469 | } | |
1470 | ||
1471 | if (count) { | |
1472 | rds_ring->producer = producer; | |
1473 | writel((producer-1) & (rds_ring->num_desc-1), | |
d17dd0d9 | 1474 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
1475 | } |
1476 | } | |
1477 | ||
1478 | static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter) | |
1479 | { | |
3620af0e JP |
1480 | if (adapter->ahw->msg_enable & NETIF_MSG_DRV) { |
1481 | char prefix[30]; | |
1482 | ||
1483 | scnprintf(prefix, sizeof(prefix), "%s: %s: ", | |
1484 | dev_name(&adapter->pdev->dev), __func__); | |
1485 | ||
1486 | print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1, | |
1487 | skb->data, skb->len, true); | |
c70001a9 SC |
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, rds_ring, index, cksum); | |
1513 | if (!skb) | |
1514 | return; | |
1515 | ||
1516 | if (length > rds_ring->skb_size) | |
1517 | skb_put(skb, rds_ring->skb_size); | |
1518 | else | |
1519 | skb_put(skb, length); | |
1520 | ||
1521 | if (pkt_offset) | |
1522 | skb_pull(skb, pkt_offset); | |
1523 | ||
1524 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
79788450 | 1525 | adapter->ahw->diag_cnt++; |
c70001a9 SC |
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 | ||
7e2cf4fe | 1536 | void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
c70001a9 SC |
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, 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(consumer, sds_ring->crb_sts_consumer); | |
1571 | } | |
1572 | ||
7e2cf4fe SC |
1573 | int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
1574 | struct net_device *netdev) | |
c70001a9 | 1575 | { |
df95fc44 | 1576 | int ring; |
c70001a9 SC |
1577 | struct qlcnic_host_sds_ring *sds_ring; |
1578 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1579 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1580 | |
34e8c406 | 1581 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
c70001a9 SC |
1582 | return -ENOMEM; |
1583 | ||
34e8c406 | 1584 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1585 | sds_ring = &recv_ctx->sds_rings[ring]; |
012ec812 | 1586 | if (qlcnic_check_multi_tx(adapter) && |
80c0e4f3 | 1587 | !adapter->ahw->diag_test) { |
d17dd0d9 | 1588 | netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll, |
df95fc44 | 1589 | NAPI_POLL_WEIGHT); |
012ec812 | 1590 | } else { |
34e8c406 | 1591 | if (ring == (adapter->drv_sds_rings - 1)) |
012ec812 HM |
1592 | netif_napi_add(netdev, &sds_ring->napi, |
1593 | qlcnic_poll, | |
df95fc44 | 1594 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1595 | else |
1596 | netif_napi_add(netdev, &sds_ring->napi, | |
1597 | qlcnic_rx_poll, | |
df95fc44 | 1598 | NAPI_POLL_WEIGHT); |
012ec812 | 1599 | } |
c70001a9 SC |
1600 | } |
1601 | ||
4be41e92 SC |
1602 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
1603 | qlcnic_free_sds_rings(recv_ctx); | |
1604 | return -ENOMEM; | |
1605 | } | |
1606 | ||
c2c5e3a0 | 1607 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1608 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 | 1609 | tx_ring = &adapter->tx_ring[ring]; |
d64b5e85 | 1610 | netif_tx_napi_add(netdev, &tx_ring->napi, qlcnic_tx_poll, |
df95fc44 | 1611 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1612 | } |
1613 | } | |
1614 | ||
c70001a9 SC |
1615 | return 0; |
1616 | } | |
1617 | ||
4be41e92 | 1618 | void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1619 | { |
1620 | int ring; | |
1621 | struct qlcnic_host_sds_ring *sds_ring; | |
1622 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1623 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1624 | |
34e8c406 | 1625 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1626 | sds_ring = &recv_ctx->sds_rings[ring]; |
1627 | netif_napi_del(&sds_ring->napi); | |
1628 | } | |
1629 | ||
1630 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
012ec812 | 1631 | |
c2c5e3a0 | 1632 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1633 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1634 | tx_ring = &adapter->tx_ring[ring]; |
1635 | netif_napi_del(&tx_ring->napi); | |
1636 | } | |
1637 | } | |
1638 | ||
4be41e92 | 1639 | qlcnic_free_tx_rings(adapter); |
c70001a9 SC |
1640 | } |
1641 | ||
7e2cf4fe | 1642 | void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1643 | { |
1644 | int ring; | |
1645 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1646 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1647 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1648 | ||
1649 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1650 | return; | |
1651 | ||
34e8c406 | 1652 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1653 | sds_ring = &recv_ctx->sds_rings[ring]; |
1654 | napi_enable(&sds_ring->napi); | |
2cc5752e | 1655 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 | 1656 | } |
012ec812 HM |
1657 | |
1658 | if (qlcnic_check_multi_tx(adapter) && | |
1659 | (adapter->flags & QLCNIC_MSIX_ENABLED) && | |
80c0e4f3 | 1660 | !adapter->ahw->diag_test) { |
34e8c406 | 1661 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1662 | tx_ring = &adapter->tx_ring[ring]; |
1663 | napi_enable(&tx_ring->napi); | |
1664 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
1665 | } | |
1666 | } | |
c70001a9 SC |
1667 | } |
1668 | ||
7e2cf4fe | 1669 | void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1670 | { |
1671 | int ring; | |
1672 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1673 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1674 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1675 | ||
1676 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1677 | return; | |
1678 | ||
34e8c406 | 1679 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1680 | sds_ring = &recv_ctx->sds_rings[ring]; |
2cc5752e | 1681 | qlcnic_disable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1682 | napi_synchronize(&sds_ring->napi); |
1683 | napi_disable(&sds_ring->napi); | |
1684 | } | |
012ec812 HM |
1685 | |
1686 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && | |
c2c5e3a0 | 1687 | !adapter->ahw->diag_test && |
012ec812 | 1688 | qlcnic_check_multi_tx(adapter)) { |
34e8c406 | 1689 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 | 1690 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 1691 | qlcnic_disable_tx_intr(adapter, tx_ring); |
012ec812 HM |
1692 | napi_synchronize(&tx_ring->napi); |
1693 | napi_disable(&tx_ring->napi); | |
1694 | } | |
1695 | } | |
c70001a9 | 1696 | } |
4be41e92 | 1697 | |
53643a75 SS |
1698 | #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36) |
1699 | #define QLC_83XX_LRO_LB_PKT (1ULL << 46) | |
1700 | ||
1701 | static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt) | |
1702 | { | |
1703 | if (lro_pkt) | |
1704 | return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0; | |
1705 | else | |
1706 | return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0; | |
1707 | } | |
1708 | ||
2b3d7b75 SS |
1709 | #define QLCNIC_ENCAP_LENGTH_MASK 0x7f |
1710 | ||
1711 | static inline u8 qlcnic_encap_length(u64 sts_data) | |
1712 | { | |
1713 | return sts_data & QLCNIC_ENCAP_LENGTH_MASK; | |
1714 | } | |
1715 | ||
4be41e92 SC |
1716 | static struct qlcnic_rx_buffer * |
1717 | qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter, | |
1718 | struct qlcnic_host_sds_ring *sds_ring, | |
1719 | u8 ring, u64 sts_data[]) | |
1720 | { | |
1721 | struct net_device *netdev = adapter->netdev; | |
1722 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1723 | struct qlcnic_rx_buffer *buffer; | |
1724 | struct sk_buff *skb; | |
1725 | struct qlcnic_host_rds_ring *rds_ring; | |
53643a75 | 1726 | int index, length, cksum, is_lb_pkt; |
b3f7de83 SC |
1727 | u16 vid = 0xffff; |
1728 | int err; | |
4be41e92 SC |
1729 | |
1730 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1731 | return NULL; | |
1732 | ||
1733 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1734 | ||
1735 | index = qlcnic_83xx_hndl(sts_data[0]); | |
1736 | if (unlikely(index >= rds_ring->num_desc)) | |
1737 | return NULL; | |
1738 | ||
1739 | buffer = &rds_ring->rx_buf_arr[index]; | |
1740 | length = qlcnic_83xx_pktln(sts_data[0]); | |
1741 | cksum = qlcnic_83xx_csum_status(sts_data[1]); | |
1742 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1743 | if (!skb) | |
1744 | return buffer; | |
1745 | ||
1746 | if (length > rds_ring->skb_size) | |
1747 | skb_put(skb, rds_ring->skb_size); | |
1748 | else | |
1749 | skb_put(skb, length); | |
1750 | ||
b3f7de83 SC |
1751 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1752 | ||
1753 | if (adapter->rx_mac_learn) { | |
1754 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0); | |
1755 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1756 | } | |
1757 | ||
1758 | if (unlikely(err)) { | |
4be41e92 SC |
1759 | adapter->stats.rxdropped++; |
1760 | dev_kfree_skb(skb); | |
1761 | return buffer; | |
1762 | } | |
1763 | ||
1764 | skb->protocol = eth_type_trans(skb, netdev); | |
1765 | ||
2b3d7b75 SS |
1766 | if (qlcnic_encap_length(sts_data[1]) && |
1767 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
71d7a277 | 1768 | skb->csum_level = 1; |
2b3d7b75 SS |
1769 | adapter->stats.encap_rx_csummed++; |
1770 | } | |
1771 | ||
4be41e92 | 1772 | if (vid != 0xffff) |
86a9bad3 | 1773 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
1774 | |
1775 | napi_gro_receive(&sds_ring->napi, skb); | |
1776 | ||
1777 | adapter->stats.rx_pkts++; | |
1778 | adapter->stats.rxbytes += length; | |
1779 | ||
1780 | return buffer; | |
1781 | } | |
1782 | ||
1783 | static struct qlcnic_rx_buffer * | |
1784 | qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, | |
1785 | u8 ring, u64 sts_data[]) | |
1786 | { | |
1787 | struct net_device *netdev = adapter->netdev; | |
1788 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1789 | struct qlcnic_rx_buffer *buffer; | |
1790 | struct sk_buff *skb; | |
1791 | struct qlcnic_host_rds_ring *rds_ring; | |
1792 | struct iphdr *iph; | |
1793 | struct ipv6hdr *ipv6h; | |
1794 | struct tcphdr *th; | |
1795 | bool push; | |
1796 | int l2_hdr_offset, l4_hdr_offset; | |
53643a75 | 1797 | int index, is_lb_pkt; |
99e85879 | 1798 | u16 lro_length, length, data_offset, gso_size; |
b3f7de83 SC |
1799 | u16 vid = 0xffff; |
1800 | int err; | |
4be41e92 | 1801 | |
462bed48 | 1802 | if (unlikely(ring >= adapter->max_rds_rings)) |
4be41e92 SC |
1803 | return NULL; |
1804 | ||
1805 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1806 | ||
1807 | index = qlcnic_83xx_hndl(sts_data[0]); | |
462bed48 | 1808 | if (unlikely(index >= rds_ring->num_desc)) |
4be41e92 SC |
1809 | return NULL; |
1810 | ||
1811 | buffer = &rds_ring->rx_buf_arr[index]; | |
1812 | ||
1813 | lro_length = qlcnic_83xx_lro_pktln(sts_data[0]); | |
1814 | l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]); | |
1815 | l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]); | |
1816 | push = qlcnic_83xx_is_psh_bit(sts_data[1]); | |
1817 | ||
1818 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1819 | if (!skb) | |
1820 | return buffer; | |
53643a75 | 1821 | |
4be41e92 SC |
1822 | if (qlcnic_83xx_is_tstamp(sts_data[1])) |
1823 | data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE; | |
1824 | else | |
1825 | data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE; | |
1826 | ||
1827 | skb_put(skb, lro_length + data_offset); | |
1828 | skb_pull(skb, l2_hdr_offset); | |
1829 | ||
b3f7de83 SC |
1830 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1831 | ||
1832 | if (adapter->rx_mac_learn) { | |
1833 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1); | |
1834 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1835 | } | |
1836 | ||
1837 | if (unlikely(err)) { | |
4be41e92 SC |
1838 | adapter->stats.rxdropped++; |
1839 | dev_kfree_skb(skb); | |
1840 | return buffer; | |
1841 | } | |
1842 | ||
1843 | skb->protocol = eth_type_trans(skb, netdev); | |
1844 | if (ntohs(skb->protocol) == ETH_P_IPV6) { | |
1845 | ipv6h = (struct ipv6hdr *)skb->data; | |
1846 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); | |
1847 | ||
1848 | length = (th->doff << 2) + lro_length; | |
1849 | ipv6h->payload_len = htons(length); | |
1850 | } else { | |
1851 | iph = (struct iphdr *)skb->data; | |
1852 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
1853 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; | |
1bcac3b0 | 1854 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
4be41e92 | 1855 | iph->tot_len = htons(length); |
4be41e92 SC |
1856 | } |
1857 | ||
1858 | th->psh = push; | |
1859 | length = skb->len; | |
1860 | ||
99e85879 SS |
1861 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
1862 | gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]); | |
1863 | skb_shinfo(skb)->gso_size = gso_size; | |
1864 | if (skb->protocol == htons(ETH_P_IPV6)) | |
1865 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; | |
1866 | else | |
1867 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; | |
1868 | } | |
1869 | ||
4be41e92 | 1870 | if (vid != 0xffff) |
86a9bad3 | 1871 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
1872 | |
1873 | netif_receive_skb(skb); | |
1874 | ||
1875 | adapter->stats.lro_pkts++; | |
1876 | adapter->stats.lrobytes += length; | |
1877 | return buffer; | |
1878 | } | |
1879 | ||
1880 | static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, | |
1881 | int max) | |
1882 | { | |
1883 | struct qlcnic_host_rds_ring *rds_ring; | |
1884 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1885 | struct list_head *cur; | |
1886 | struct status_desc *desc; | |
1887 | struct qlcnic_rx_buffer *rxbuf = NULL; | |
1888 | u8 ring; | |
1889 | u64 sts_data[2]; | |
1890 | int count = 0, opcode; | |
1891 | u32 consumer = sds_ring->consumer; | |
1892 | ||
1893 | while (count < max) { | |
1894 | desc = &sds_ring->desc_head[consumer]; | |
1895 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
1896 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
1897 | if (!opcode) | |
1898 | break; | |
1899 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
1900 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); | |
1901 | ||
1902 | switch (opcode) { | |
1903 | case QLC_83XX_REG_DESC: | |
1904 | rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring, | |
1905 | ring, sts_data); | |
1906 | break; | |
1907 | case QLC_83XX_LRO_DESC: | |
1908 | rxbuf = qlcnic_83xx_process_lro(adapter, ring, | |
1909 | sts_data); | |
1910 | break; | |
1911 | default: | |
1912 | dev_info(&adapter->pdev->dev, | |
0b1587b1 | 1913 | "Unknown opcode: 0x%x\n", opcode); |
4be41e92 SC |
1914 | goto skip; |
1915 | } | |
1916 | ||
1917 | if (likely(rxbuf)) | |
1918 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1919 | else | |
1920 | adapter->stats.null_rxbuf++; | |
1921 | skip: | |
1922 | desc = &sds_ring->desc_head[consumer]; | |
1923 | /* Reset the descriptor */ | |
1924 | desc->status_desc_data[1] = 0; | |
1925 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1926 | count++; | |
1927 | } | |
1928 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
1929 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; | |
1930 | if (!list_empty(&sds_ring->free_list[ring])) { | |
1931 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
1932 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, | |
1933 | list); | |
1934 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); | |
1935 | } | |
1936 | spin_lock(&rds_ring->lock); | |
1937 | list_splice_tail_init(&sds_ring->free_list[ring], | |
1938 | &rds_ring->free_list); | |
1939 | spin_unlock(&rds_ring->lock); | |
1940 | } | |
1941 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); | |
1942 | } | |
1943 | if (count) { | |
1944 | sds_ring->consumer = consumer; | |
1945 | writel(consumer, sds_ring->crb_sts_consumer); | |
1946 | } | |
1947 | return count; | |
1948 | } | |
1949 | ||
da6c8063 RB |
1950 | static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget) |
1951 | { | |
1952 | int tx_complete; | |
1953 | int work_done; | |
1954 | struct qlcnic_host_sds_ring *sds_ring; | |
1955 | struct qlcnic_adapter *adapter; | |
1956 | struct qlcnic_host_tx_ring *tx_ring; | |
1957 | ||
1958 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1959 | adapter = sds_ring->adapter; | |
1960 | /* tx ring count = 1 */ | |
1961 | tx_ring = adapter->tx_ring; | |
1962 | ||
1963 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
1964 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
f31ec95f SS |
1965 | |
1966 | /* Check if we need a repoll */ | |
1967 | if (!tx_complete) | |
1968 | work_done = budget; | |
1969 | ||
1970 | if (work_done < budget) { | |
6ad20165 | 1971 | napi_complete_done(&sds_ring->napi, work_done); |
2cc5752e | 1972 | qlcnic_enable_sds_intr(adapter, sds_ring); |
da6c8063 RB |
1973 | } |
1974 | ||
1975 | return work_done; | |
1976 | } | |
1977 | ||
4be41e92 SC |
1978 | static int qlcnic_83xx_poll(struct napi_struct *napi, int budget) |
1979 | { | |
1980 | int tx_complete; | |
1981 | int work_done; | |
1982 | struct qlcnic_host_sds_ring *sds_ring; | |
1983 | struct qlcnic_adapter *adapter; | |
1984 | struct qlcnic_host_tx_ring *tx_ring; | |
1985 | ||
1986 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1987 | adapter = sds_ring->adapter; | |
1988 | /* tx ring count = 1 */ | |
1989 | tx_ring = adapter->tx_ring; | |
1990 | ||
4be41e92 SC |
1991 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
1992 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
f31ec95f SS |
1993 | |
1994 | /* Check if we need a repoll */ | |
1995 | if (!tx_complete) | |
1996 | work_done = budget; | |
1997 | ||
1998 | if (work_done < budget) { | |
6ad20165 | 1999 | napi_complete_done(&sds_ring->napi, work_done); |
2cc5752e | 2000 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2001 | } |
2002 | ||
2003 | return work_done; | |
2004 | } | |
2005 | ||
2006 | static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget) | |
2007 | { | |
2008 | int work_done; | |
2009 | struct qlcnic_host_tx_ring *tx_ring; | |
2010 | struct qlcnic_adapter *adapter; | |
2011 | ||
4be41e92 SC |
2012 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); |
2013 | adapter = tx_ring->adapter; | |
2014 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
2015 | if (work_done) { | |
2016 | napi_complete(&tx_ring->napi); | |
2017 | if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) | |
2cc5752e | 2018 | qlcnic_enable_tx_intr(adapter, tx_ring); |
f31ec95f SS |
2019 | } else { |
2020 | /* need a repoll */ | |
2021 | work_done = budget; | |
4be41e92 SC |
2022 | } |
2023 | ||
2024 | return work_done; | |
2025 | } | |
2026 | ||
2027 | static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget) | |
2028 | { | |
2029 | int work_done; | |
2030 | struct qlcnic_host_sds_ring *sds_ring; | |
2031 | struct qlcnic_adapter *adapter; | |
2032 | ||
2033 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
2034 | adapter = sds_ring->adapter; | |
2035 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
2036 | if (work_done < budget) { | |
6ad20165 | 2037 | napi_complete_done(&sds_ring->napi, work_done); |
4be41e92 | 2038 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
2cc5752e | 2039 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2040 | } |
2041 | ||
2042 | return work_done; | |
2043 | } | |
2044 | ||
2045 | void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter) | |
2046 | { | |
2047 | int ring; | |
2048 | struct qlcnic_host_sds_ring *sds_ring; | |
2049 | struct qlcnic_host_tx_ring *tx_ring; | |
2050 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2051 | ||
2052 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
2053 | return; | |
2054 | ||
34e8c406 | 2055 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2056 | sds_ring = &recv_ctx->sds_rings[ring]; |
2057 | napi_enable(&sds_ring->napi); | |
ac166700 | 2058 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2059 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2060 | } |
2061 | ||
da6c8063 RB |
2062 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2063 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2064 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2065 | tx_ring = &adapter->tx_ring[ring]; |
2066 | napi_enable(&tx_ring->napi); | |
2cc5752e | 2067 | qlcnic_enable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
2068 | } |
2069 | } | |
2070 | } | |
2071 | ||
2072 | void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter) | |
2073 | { | |
2074 | int ring; | |
2075 | struct qlcnic_host_sds_ring *sds_ring; | |
2076 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2077 | struct qlcnic_host_tx_ring *tx_ring; | |
2078 | ||
2079 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
2080 | return; | |
2081 | ||
34e8c406 | 2082 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2083 | sds_ring = &recv_ctx->sds_rings[ring]; |
ac166700 | 2084 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2085 | qlcnic_disable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2086 | napi_synchronize(&sds_ring->napi); |
2087 | napi_disable(&sds_ring->napi); | |
2088 | } | |
2089 | ||
da6c8063 RB |
2090 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2091 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2092 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 | 2093 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 2094 | qlcnic_disable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
2095 | napi_synchronize(&tx_ring->napi); |
2096 | napi_disable(&tx_ring->napi); | |
2097 | } | |
2098 | } | |
2099 | } | |
2100 | ||
2101 | int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, | |
2102 | struct net_device *netdev) | |
2103 | { | |
df95fc44 | 2104 | int ring; |
4be41e92 SC |
2105 | struct qlcnic_host_sds_ring *sds_ring; |
2106 | struct qlcnic_host_tx_ring *tx_ring; | |
2107 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2108 | ||
34e8c406 | 2109 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
4be41e92 SC |
2110 | return -ENOMEM; |
2111 | ||
34e8c406 | 2112 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2113 | sds_ring = &recv_ctx->sds_rings[ring]; |
da6c8063 | 2114 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
df95fc44 | 2115 | if (!(adapter->flags & QLCNIC_TX_INTR_SHARED)) |
da6c8063 RB |
2116 | netif_napi_add(netdev, &sds_ring->napi, |
2117 | qlcnic_83xx_rx_poll, | |
df95fc44 MS |
2118 | NAPI_POLL_WEIGHT); |
2119 | else | |
da6c8063 RB |
2120 | netif_napi_add(netdev, &sds_ring->napi, |
2121 | qlcnic_83xx_msix_sriov_vf_poll, | |
df95fc44 | 2122 | NAPI_POLL_WEIGHT); |
da6c8063 RB |
2123 | |
2124 | } else { | |
4be41e92 SC |
2125 | netif_napi_add(netdev, &sds_ring->napi, |
2126 | qlcnic_83xx_poll, | |
df95fc44 | 2127 | NAPI_POLL_WEIGHT); |
da6c8063 | 2128 | } |
4be41e92 SC |
2129 | } |
2130 | ||
2131 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { | |
2132 | qlcnic_free_sds_rings(recv_ctx); | |
2133 | return -ENOMEM; | |
2134 | } | |
2135 | ||
da6c8063 RB |
2136 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2137 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2138 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 | 2139 | tx_ring = &adapter->tx_ring[ring]; |
d64b5e85 | 2140 | netif_tx_napi_add(netdev, &tx_ring->napi, |
4be41e92 | 2141 | qlcnic_83xx_msix_tx_poll, |
df95fc44 | 2142 | NAPI_POLL_WEIGHT); |
4be41e92 SC |
2143 | } |
2144 | } | |
2145 | ||
2146 | return 0; | |
2147 | } | |
2148 | ||
2149 | void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) | |
2150 | { | |
2151 | int ring; | |
2152 | struct qlcnic_host_sds_ring *sds_ring; | |
2153 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2154 | struct qlcnic_host_tx_ring *tx_ring; | |
2155 | ||
34e8c406 | 2156 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2157 | sds_ring = &recv_ctx->sds_rings[ring]; |
2158 | netif_napi_del(&sds_ring->napi); | |
2159 | } | |
2160 | ||
2161 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
2162 | ||
da6c8063 RB |
2163 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2164 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2165 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2166 | tx_ring = &adapter->tx_ring[ring]; |
2167 | netif_napi_del(&tx_ring->napi); | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | qlcnic_free_tx_rings(adapter); | |
2172 | } | |
2173 | ||
21041400 | 2174 | static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, |
2175 | int ring, u64 sts_data[]) | |
4be41e92 SC |
2176 | { |
2177 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2178 | struct sk_buff *skb; | |
2179 | struct qlcnic_host_rds_ring *rds_ring; | |
2180 | int index, length; | |
2181 | ||
2182 | if (unlikely(ring >= adapter->max_rds_rings)) | |
2183 | return; | |
2184 | ||
2185 | rds_ring = &recv_ctx->rds_rings[ring]; | |
2186 | index = qlcnic_83xx_hndl(sts_data[0]); | |
2187 | if (unlikely(index >= rds_ring->num_desc)) | |
2188 | return; | |
2189 | ||
2190 | length = qlcnic_83xx_pktln(sts_data[0]); | |
2191 | ||
2192 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
2193 | if (!skb) | |
2194 | return; | |
2195 | ||
2196 | if (length > rds_ring->skb_size) | |
2197 | skb_put(skb, rds_ring->skb_size); | |
2198 | else | |
2199 | skb_put(skb, length); | |
2200 | ||
2201 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
2202 | adapter->ahw->diag_cnt++; | |
2203 | else | |
2204 | dump_skb(skb, adapter); | |
2205 | ||
2206 | dev_kfree_skb_any(skb); | |
2207 | return; | |
2208 | } | |
2209 | ||
2210 | void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) | |
2211 | { | |
2212 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
2213 | struct status_desc *desc; | |
2214 | u64 sts_data[2]; | |
2215 | int ring, opcode; | |
2216 | u32 consumer = sds_ring->consumer; | |
2217 | ||
2218 | desc = &sds_ring->desc_head[consumer]; | |
2219 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
2220 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
2221 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
2222 | if (!opcode) | |
2223 | return; | |
2224 | ||
5b4d10f5 | 2225 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); |
4be41e92 SC |
2226 | qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); |
2227 | desc = &sds_ring->desc_head[consumer]; | |
2228 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
2229 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
2230 | sds_ring->consumer = consumer; | |
2231 | writel(consumer, sds_ring->crb_sts_consumer); | |
2232 | } |