Commit | Line | Data |
---|---|---|
577ae39d JK |
1 | /* |
2 | * QLogic qlcnic NIC Driver | |
3 | * Copyright (c) 2009-2013 QLogic Corporation | |
4 | * | |
5 | * See LICENSE.qlcnic for copyright and licensing details. | |
6 | */ | |
7 | ||
c70001a9 SC |
8 | #include <linux/netdevice.h> |
9 | #include <linux/if_vlan.h> | |
10 | #include <net/ip.h> | |
11 | #include <linux/ipv6.h> | |
1bcac3b0 | 12 | #include <net/checksum.h> |
3620af0e | 13 | #include <linux/printk.h> |
c70001a9 SC |
14 | |
15 | #include "qlcnic.h" | |
16 | ||
381709de SS |
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 | |
c70001a9 SC |
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) \ | |
5796bd04 | 78 | ((sts_data) & 0x07FFF) |
c70001a9 SC |
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 | ||
99e85879 SS |
96 | #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff) |
97 | ||
c70001a9 SC |
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 | ||
4be41e92 SC |
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 | ||
c70001a9 SC |
112 | /* for status field in status_desc */ |
113 | #define STATUS_CKSUM_LOOP 0 | |
114 | #define STATUS_CKSUM_OK 2 | |
d17dd0d9 | 115 | |
4be41e92 SC |
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 | ||
21041400 | 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); | |
4be41e92 | 136 | |
b3f7de83 | 137 | static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan) |
4be41e92 | 138 | { |
b3f7de83 | 139 | return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff)); |
4be41e92 SC |
140 | } |
141 | ||
142 | static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, | |
143 | u16 handle, u8 ring_id) | |
144 | { | |
15ca140f | 145 | if (qlcnic_83xx_check(adapter)) |
4be41e92 SC |
146 | return handle | (ring_id << 15); |
147 | else | |
148 | return handle; | |
149 | } | |
150 | ||
53643a75 SS |
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 | ||
e0d138d9 SS |
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, vlan_id, 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, vlan_id, op); | |
170 | if (!ret) { | |
171 | hlist_del(&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) { | |
6878f79a | 183 | if (ether_addr_equal(tmp_fil->faddr, addr) && |
e0d138d9 SS |
184 | tmp_fil->vlan_id == vlan_id) |
185 | return tmp_fil; | |
186 | } | |
187 | ||
188 | return NULL; | |
189 | } | |
190 | ||
21041400 | 191 | static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, |
192 | struct sk_buff *skb, int loopback_pkt, u16 vlan_id) | |
53643a75 SS |
193 | { |
194 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); | |
195 | struct qlcnic_filter *fil, *tmp_fil; | |
53643a75 SS |
196 | struct hlist_head *head; |
197 | unsigned long time; | |
198 | u64 src_addr = 0; | |
e0d138d9 | 199 | u8 hindex, op; |
53643a75 SS |
200 | int ret; |
201 | ||
b3f7de83 SC |
202 | if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff)) |
203 | vlan_id = 0; | |
204 | ||
53643a75 | 205 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
b3f7de83 | 206 | hindex = qlcnic_mac_hash(src_addr, vlan_id) & |
e0d138d9 | 207 | (adapter->fhash.fbucket_size - 1); |
53643a75 SS |
208 | |
209 | if (loopback_pkt) { | |
210 | if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax) | |
211 | return; | |
212 | ||
53643a75 SS |
213 | head = &(adapter->rx_fhash.fhead[hindex]); |
214 | ||
e0d138d9 SS |
215 | tmp_fil = qlcnic_find_mac_filter(head, &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; | |
53643a75 SS |
221 | } |
222 | ||
223 | fil = kzalloc(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(&adapter->rx_mac_learn_lock); | |
231 | hlist_add_head(&(fil->fnode), head); | |
232 | adapter->rx_fhash.fnum++; | |
233 | spin_unlock(&adapter->rx_mac_learn_lock); | |
234 | } else { | |
e0d138d9 | 235 | head = &adapter->fhash.fhead[hindex]; |
53643a75 | 236 | |
e0d138d9 | 237 | spin_lock(&adapter->mac_learn_lock); |
53643a75 | 238 | |
e0d138d9 SS |
239 | tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); |
240 | if (tmp_fil) { | |
53643a75 SS |
241 | op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; |
242 | ret = qlcnic_sre_macaddr_change(adapter, | |
243 | (u8 *)&src_addr, | |
244 | vlan_id, op); | |
245 | if (!ret) { | |
e0d138d9 SS |
246 | hlist_del(&tmp_fil->fnode); |
247 | adapter->fhash.fnum--; | |
53643a75 | 248 | } |
e0d138d9 SS |
249 | |
250 | spin_unlock(&adapter->mac_learn_lock); | |
251 | ||
252 | return; | |
53643a75 | 253 | } |
e0d138d9 SS |
254 | |
255 | spin_unlock(&adapter->mac_learn_lock); | |
256 | ||
257 | head = &adapter->rx_fhash.fhead[hindex]; | |
258 | ||
259 | spin_lock(&adapter->rx_mac_learn_lock); | |
260 | ||
261 | tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); | |
262 | if (tmp_fil) | |
263 | qlcnic_delete_rx_list_mac(adapter, tmp_fil, &src_addr, | |
264 | vlan_id); | |
265 | ||
53643a75 SS |
266 | spin_unlock(&adapter->rx_mac_learn_lock); |
267 | } | |
268 | } | |
269 | ||
7e2cf4fe | 270 | void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, |
f80bc8fe | 271 | u16 vlan_id) |
c70001a9 SC |
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; | |
7e2cf4fe | 277 | struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; |
c70001a9 SC |
278 | u32 producer; |
279 | u64 word; | |
280 | ||
281 | producer = tx_ring->producer; | |
282 | hwdesc = &tx_ring->desc_head[tx_ring->producer]; | |
283 | ||
284 | req = (struct qlcnic_nic_req *)hwdesc; | |
285 | memset(req, 0, sizeof(struct qlcnic_nic_req)); | |
286 | req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23); | |
287 | ||
288 | word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16); | |
289 | req->req_hdr = cpu_to_le64(word); | |
290 | ||
291 | mac_req = (struct qlcnic_mac_req *)&(req->words[0]); | |
292 | mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; | |
4a99ab56 | 293 | memcpy(mac_req->mac_addr, uaddr, ETH_ALEN); |
c70001a9 SC |
294 | |
295 | vlan_req = (struct qlcnic_vlan_req *)&req->words[1]; | |
f80bc8fe | 296 | vlan_req->vlan_id = cpu_to_le16(vlan_id); |
c70001a9 SC |
297 | |
298 | tx_ring->producer = get_next_index(producer, tx_ring->num_desc); | |
299 | smp_mb(); | |
300 | } | |
301 | ||
d17dd0d9 | 302 | static void qlcnic_send_filter(struct qlcnic_adapter *adapter, |
d17dd0d9 SC |
303 | struct cmd_desc_type0 *first_desc, |
304 | struct sk_buff *skb) | |
c70001a9 | 305 | { |
b3f7de83 SC |
306 | struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data); |
307 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); | |
b3f7de83 | 308 | u16 protocol = ntohs(skb->protocol); |
c70001a9 | 309 | struct qlcnic_filter *fil, *tmp_fil; |
c70001a9 | 310 | struct hlist_head *head; |
b3f7de83 | 311 | struct hlist_node *n; |
c70001a9 | 312 | u64 src_addr = 0; |
f80bc8fe | 313 | u16 vlan_id = 0; |
b3f7de83 | 314 | u8 hindex, hval; |
c70001a9 | 315 | |
d747c333 RB |
316 | if (ether_addr_equal(phdr->h_source, adapter->mac_addr)) |
317 | return; | |
318 | ||
319 | if (adapter->flags & QLCNIC_VLAN_FILTERING) { | |
b3f7de83 SC |
320 | if (protocol == ETH_P_8021Q) { |
321 | vh = (struct vlan_ethhdr *)skb->data; | |
322 | vlan_id = ntohs(vh->h_vlan_TCI); | |
df8a39de JP |
323 | } else if (skb_vlan_tag_present(skb)) { |
324 | vlan_id = skb_vlan_tag_get(skb); | |
b3f7de83 | 325 | } |
b3f7de83 | 326 | } |
c70001a9 | 327 | |
c70001a9 | 328 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
b3f7de83 SC |
329 | hval = qlcnic_mac_hash(src_addr, vlan_id); |
330 | hindex = hval & (adapter->fhash.fbucket_size - 1); | |
c70001a9 SC |
331 | head = &(adapter->fhash.fhead[hindex]); |
332 | ||
b67bfe0d | 333 | hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
e2072cdf | 334 | if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) && |
7e2cf4fe | 335 | tmp_fil->vlan_id == vlan_id) { |
d17dd0d9 | 336 | if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime)) |
7e2cf4fe SC |
337 | qlcnic_change_filter(adapter, &src_addr, |
338 | vlan_id); | |
c70001a9 SC |
339 | tmp_fil->ftime = jiffies; |
340 | return; | |
341 | } | |
342 | } | |
343 | ||
ddfbac07 SS |
344 | if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) { |
345 | adapter->stats.mac_filter_limit_overrun++; | |
346 | return; | |
347 | } | |
348 | ||
c70001a9 SC |
349 | fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); |
350 | if (!fil) | |
351 | return; | |
352 | ||
7e2cf4fe | 353 | qlcnic_change_filter(adapter, &src_addr, vlan_id); |
c70001a9 SC |
354 | fil->ftime = jiffies; |
355 | fil->vlan_id = vlan_id; | |
356 | memcpy(fil->faddr, &src_addr, ETH_ALEN); | |
357 | spin_lock(&adapter->mac_learn_lock); | |
358 | hlist_add_head(&(fil->fnode), head); | |
359 | adapter->fhash.fnum++; | |
360 | spin_unlock(&adapter->mac_learn_lock); | |
361 | } | |
362 | ||
381709de SS |
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, copied, | |
410 | (char *)hwdesc, | |
411 | 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_header(skb) - | |
450 | skb->data; | |
451 | first_desc->ip_hdr_offset = skb_inner_network_offset(skb); | |
452 | ||
453 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
d17dd0d9 | 458 | static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter, |
012ec812 HM |
459 | struct cmd_desc_type0 *first_desc, struct sk_buff *skb, |
460 | struct qlcnic_host_tx_ring *tx_ring) | |
c70001a9 | 461 | { |
d17dd0d9 | 462 | u8 l4proto, opcode = 0, hdr_len = 0; |
c70001a9 | 463 | u16 flags = 0, vlan_tci = 0; |
d17dd0d9 | 464 | int copied, offset, copy_len, size; |
c70001a9 SC |
465 | struct cmd_desc_type0 *hwdesc; |
466 | struct vlan_ethhdr *vh; | |
c70001a9 SC |
467 | u16 protocol = ntohs(skb->protocol); |
468 | u32 producer = tx_ring->producer; | |
469 | ||
470 | if (protocol == ETH_P_8021Q) { | |
471 | vh = (struct vlan_ethhdr *)skb->data; | |
381709de | 472 | flags = QLCNIC_FLAGS_VLAN_TAGGED; |
c70001a9 SC |
473 | vlan_tci = ntohs(vh->h_vlan_TCI); |
474 | protocol = ntohs(vh->h_vlan_encapsulated_proto); | |
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); |
c70001a9 | 478 | } |
91b7282b | 479 | if (unlikely(adapter->tx_pvid)) { |
c70001a9 SC |
480 | if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED)) |
481 | return -EIO; | |
482 | if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED)) | |
483 | goto set_flags; | |
484 | ||
381709de | 485 | flags = QLCNIC_FLAGS_VLAN_OOB; |
91b7282b | 486 | vlan_tci = adapter->tx_pvid; |
c70001a9 SC |
487 | } |
488 | set_flags: | |
489 | qlcnic_set_tx_vlan_tci(first_desc, vlan_tci); | |
490 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); | |
491 | ||
492 | if (*(skb->data) & BIT_0) { | |
493 | flags |= BIT_0; | |
494 | memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN); | |
495 | } | |
381709de | 496 | opcode = QLCNIC_TX_ETHER_PKT; |
3eead213 | 497 | if (skb_is_gso(skb)) { |
c70001a9 | 498 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
c70001a9 | 499 | first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
381709de SS |
500 | first_desc->hdr_length = hdr_len; |
501 | opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 : | |
502 | QLCNIC_TX_TCP_LSO; | |
c70001a9 SC |
503 | |
504 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
505 | * the descriptor ring */ | |
506 | copied = 0; | |
507 | offset = 2; | |
508 | ||
381709de SS |
509 | if (flags & QLCNIC_FLAGS_VLAN_OOB) { |
510 | first_desc->hdr_length += VLAN_HLEN; | |
c70001a9 SC |
511 | first_desc->tcp_hdr_offset = VLAN_HLEN; |
512 | first_desc->ip_hdr_offset = VLAN_HLEN; | |
d17dd0d9 | 513 | |
c70001a9 | 514 | /* Only in case of TSO on vlan device */ |
381709de | 515 | flags |= QLCNIC_FLAGS_VLAN_TAGGED; |
c70001a9 SC |
516 | |
517 | /* Create a TSO vlan header template for firmware */ | |
c70001a9 SC |
518 | hwdesc = &tx_ring->desc_head[producer]; |
519 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
520 | ||
521 | copy_len = min((int)sizeof(struct cmd_desc_type0) - | |
d17dd0d9 | 522 | offset, hdr_len + VLAN_HLEN); |
c70001a9 SC |
523 | |
524 | vh = (struct vlan_ethhdr *)((char *) hwdesc + 2); | |
525 | skb_copy_from_linear_data(skb, vh, 12); | |
526 | vh->h_vlan_proto = htons(ETH_P_8021Q); | |
527 | vh->h_vlan_TCI = htons(vlan_tci); | |
528 | ||
529 | skb_copy_from_linear_data_offset(skb, 12, | |
d17dd0d9 SC |
530 | (char *)vh + 16, |
531 | copy_len - 16); | |
c70001a9 SC |
532 | copied = copy_len - VLAN_HLEN; |
533 | offset = 0; | |
c70001a9 SC |
534 | producer = get_next_index(producer, tx_ring->num_desc); |
535 | } | |
536 | ||
537 | while (copied < hdr_len) { | |
d17dd0d9 SC |
538 | size = (int)sizeof(struct cmd_desc_type0) - offset; |
539 | copy_len = min(size, (hdr_len - copied)); | |
c70001a9 SC |
540 | hwdesc = &tx_ring->desc_head[producer]; |
541 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
c70001a9 | 542 | skb_copy_from_linear_data_offset(skb, copied, |
d17dd0d9 SC |
543 | (char *)hwdesc + |
544 | offset, copy_len); | |
c70001a9 SC |
545 | copied += copy_len; |
546 | offset = 0; | |
c70001a9 SC |
547 | producer = get_next_index(producer, tx_ring->num_desc); |
548 | } | |
549 | ||
550 | tx_ring->producer = producer; | |
551 | smp_mb(); | |
552 | adapter->stats.lso_frames++; | |
553 | ||
554 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
c70001a9 SC |
555 | if (protocol == ETH_P_IP) { |
556 | l4proto = ip_hdr(skb)->protocol; | |
557 | ||
558 | if (l4proto == IPPROTO_TCP) | |
381709de | 559 | opcode = QLCNIC_TX_TCP_PKT; |
c70001a9 | 560 | else if (l4proto == IPPROTO_UDP) |
381709de | 561 | opcode = QLCNIC_TX_UDP_PKT; |
c70001a9 SC |
562 | } else if (protocol == ETH_P_IPV6) { |
563 | l4proto = ipv6_hdr(skb)->nexthdr; | |
564 | ||
565 | if (l4proto == IPPROTO_TCP) | |
381709de | 566 | opcode = QLCNIC_TX_TCPV6_PKT; |
c70001a9 | 567 | else if (l4proto == IPPROTO_UDP) |
381709de | 568 | opcode = QLCNIC_TX_UDPV6_PKT; |
c70001a9 SC |
569 | } |
570 | } | |
571 | first_desc->tcp_hdr_offset += skb_transport_offset(skb); | |
572 | first_desc->ip_hdr_offset += skb_network_offset(skb); | |
573 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
d17dd0d9 SC |
578 | static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb, |
579 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
580 | { |
581 | struct qlcnic_skb_frag *nf; | |
582 | struct skb_frag_struct *frag; | |
583 | int i, nr_frags; | |
584 | dma_addr_t map; | |
585 | ||
586 | nr_frags = skb_shinfo(skb)->nr_frags; | |
587 | nf = &pbuf->frag_array[0]; | |
588 | ||
d17dd0d9 SC |
589 | map = pci_map_single(pdev, skb->data, skb_headlen(skb), |
590 | PCI_DMA_TODEVICE); | |
c70001a9 SC |
591 | if (pci_dma_mapping_error(pdev, map)) |
592 | goto out_err; | |
593 | ||
594 | nf->dma = map; | |
595 | nf->length = skb_headlen(skb); | |
596 | ||
597 | for (i = 0; i < nr_frags; i++) { | |
598 | frag = &skb_shinfo(skb)->frags[i]; | |
599 | nf = &pbuf->frag_array[i+1]; | |
c70001a9 SC |
600 | map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag), |
601 | DMA_TO_DEVICE); | |
602 | if (dma_mapping_error(&pdev->dev, map)) | |
603 | goto unwind; | |
604 | ||
605 | nf->dma = map; | |
606 | nf->length = skb_frag_size(frag); | |
607 | } | |
608 | ||
609 | return 0; | |
610 | ||
611 | unwind: | |
612 | while (--i >= 0) { | |
613 | nf = &pbuf->frag_array[i+1]; | |
614 | pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE); | |
615 | } | |
616 | ||
617 | nf = &pbuf->frag_array[0]; | |
618 | pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE); | |
619 | ||
620 | out_err: | |
621 | return -ENOMEM; | |
622 | } | |
623 | ||
d17dd0d9 SC |
624 | static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb, |
625 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
626 | { |
627 | struct qlcnic_skb_frag *nf = &pbuf->frag_array[0]; | |
d17dd0d9 | 628 | int i, nr_frags = skb_shinfo(skb)->nr_frags; |
c70001a9 SC |
629 | |
630 | for (i = 0; i < nr_frags; i++) { | |
631 | nf = &pbuf->frag_array[i+1]; | |
632 | pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE); | |
633 | } | |
634 | ||
635 | nf = &pbuf->frag_array[0]; | |
636 | pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE); | |
637 | pbuf->skb = NULL; | |
638 | } | |
639 | ||
d17dd0d9 | 640 | static inline void qlcnic_clear_cmddesc(u64 *desc) |
c70001a9 SC |
641 | { |
642 | desc[0] = 0ULL; | |
643 | desc[2] = 0ULL; | |
644 | desc[7] = 0ULL; | |
645 | } | |
646 | ||
d17dd0d9 | 647 | netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
c70001a9 SC |
648 | { |
649 | struct qlcnic_adapter *adapter = netdev_priv(netdev); | |
012ec812 | 650 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
651 | struct qlcnic_cmd_buffer *pbuf; |
652 | struct qlcnic_skb_frag *buffrag; | |
653 | struct cmd_desc_type0 *hwdesc, *first_desc; | |
654 | struct pci_dev *pdev; | |
655 | struct ethhdr *phdr; | |
d17dd0d9 SC |
656 | int i, k, frag_count, delta = 0; |
657 | u32 producer, num_txd; | |
381709de SS |
658 | u16 protocol; |
659 | bool l4_is_udp = false; | |
c70001a9 | 660 | |
c70001a9 | 661 | if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
012ec812 | 662 | netif_tx_stop_all_queues(netdev); |
c70001a9 SC |
663 | return NETDEV_TX_BUSY; |
664 | } | |
665 | ||
666 | if (adapter->flags & QLCNIC_MACSPOOF) { | |
667 | phdr = (struct ethhdr *)skb->data; | |
668 | if (!ether_addr_equal(phdr->h_source, adapter->mac_addr)) | |
669 | goto drop_packet; | |
670 | } | |
671 | ||
18afc102 | 672 | tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)]; |
012ec812 HM |
673 | num_txd = tx_ring->num_desc; |
674 | ||
c70001a9 | 675 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
012ec812 | 676 | |
c70001a9 SC |
677 | /* 14 frags supported for normal packet and |
678 | * 32 frags supported for TSO packet | |
679 | */ | |
680 | if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) { | |
c70001a9 SC |
681 | for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++) |
682 | delta += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
683 | ||
684 | if (!__pskb_pull_tail(skb, delta)) | |
685 | goto drop_packet; | |
686 | ||
687 | frag_count = 1 + skb_shinfo(skb)->nr_frags; | |
688 | } | |
689 | ||
690 | if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) { | |
012ec812 | 691 | netif_tx_stop_queue(tx_ring->txq); |
d17dd0d9 | 692 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
012ec812 | 693 | netif_tx_start_queue(tx_ring->txq); |
d17dd0d9 | 694 | } else { |
f27c75b3 | 695 | tx_ring->tx_stats.xmit_off++; |
c70001a9 SC |
696 | return NETDEV_TX_BUSY; |
697 | } | |
698 | } | |
699 | ||
700 | producer = tx_ring->producer; | |
701 | pbuf = &tx_ring->cmd_buf_arr[producer]; | |
c70001a9 | 702 | pdev = adapter->pdev; |
d17dd0d9 SC |
703 | first_desc = &tx_ring->desc_head[producer]; |
704 | hwdesc = &tx_ring->desc_head[producer]; | |
c70001a9 SC |
705 | qlcnic_clear_cmddesc((u64 *)hwdesc); |
706 | ||
707 | if (qlcnic_map_tx_skb(pdev, skb, pbuf)) { | |
708 | adapter->stats.tx_dma_map_error++; | |
709 | goto drop_packet; | |
710 | } | |
711 | ||
712 | pbuf->skb = skb; | |
713 | pbuf->frag_count = frag_count; | |
714 | ||
715 | qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len); | |
716 | qlcnic_set_tx_port(first_desc, adapter->portnum); | |
717 | ||
718 | for (i = 0; i < frag_count; i++) { | |
c70001a9 SC |
719 | k = i % 4; |
720 | ||
721 | if ((k == 0) && (i > 0)) { | |
722 | /* move to next desc.*/ | |
723 | producer = get_next_index(producer, num_txd); | |
724 | hwdesc = &tx_ring->desc_head[producer]; | |
725 | qlcnic_clear_cmddesc((u64 *)hwdesc); | |
726 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
727 | } | |
728 | ||
729 | buffrag = &pbuf->frag_array[i]; | |
c70001a9 SC |
730 | hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length); |
731 | switch (k) { | |
732 | case 0: | |
733 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
734 | break; | |
735 | case 1: | |
736 | hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma); | |
737 | break; | |
738 | case 2: | |
739 | hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma); | |
740 | break; | |
741 | case 3: | |
742 | hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma); | |
743 | break; | |
744 | } | |
745 | } | |
746 | ||
747 | tx_ring->producer = get_next_index(producer, num_txd); | |
748 | smp_mb(); | |
749 | ||
381709de SS |
750 | protocol = ntohs(skb->protocol); |
751 | if (protocol == ETH_P_IP) | |
752 | l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP; | |
753 | else if (protocol == ETH_P_IPV6) | |
754 | l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP; | |
755 | ||
756 | /* Check if it is a VXLAN packet */ | |
757 | if (!skb->encapsulation || !l4_is_udp || | |
758 | !qlcnic_encap_tx_offload(adapter)) { | |
759 | if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb, | |
760 | tx_ring))) | |
761 | goto unwind_buff; | |
762 | } else { | |
763 | if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc, | |
764 | skb, tx_ring))) | |
765 | goto unwind_buff; | |
766 | } | |
c70001a9 | 767 | |
fe1adc6b | 768 | if (adapter->drv_mac_learn) |
4be41e92 | 769 | qlcnic_send_filter(adapter, first_desc, skb); |
c70001a9 | 770 | |
f27c75b3 HM |
771 | tx_ring->tx_stats.tx_bytes += skb->len; |
772 | tx_ring->tx_stats.xmit_called++; | |
c70001a9 | 773 | |
9216a97a SC |
774 | /* Ensure writes are complete before HW fetches Tx descriptors */ |
775 | wmb(); | |
c70001a9 SC |
776 | qlcnic_update_cmd_producer(tx_ring); |
777 | ||
778 | return NETDEV_TX_OK; | |
779 | ||
780 | unwind_buff: | |
781 | qlcnic_unmap_buffers(pdev, skb, pbuf); | |
782 | drop_packet: | |
783 | adapter->stats.txdropped++; | |
784 | dev_kfree_skb_any(skb); | |
785 | return NETDEV_TX_OK; | |
786 | } | |
787 | ||
7f966452 | 788 | void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) |
c70001a9 SC |
789 | { |
790 | struct net_device *netdev = adapter->netdev; | |
791 | ||
792 | if (adapter->ahw->linkup && !linkup) { | |
793 | netdev_info(netdev, "NIC Link is down\n"); | |
794 | adapter->ahw->linkup = 0; | |
b84caae4 | 795 | netif_carrier_off(netdev); |
c70001a9 | 796 | } else if (!adapter->ahw->linkup && linkup) { |
092dfcf3 SS |
797 | adapter->ahw->linkup = 1; |
798 | ||
799 | /* Do not advertise Link up to the stack if device | |
800 | * is in loopback mode | |
801 | */ | |
802 | if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) { | |
803 | netdev_info(netdev, "NIC Link is up for loopback test\n"); | |
d9c602f0 | 804 | return; |
092dfcf3 | 805 | } |
d9c602f0 | 806 | |
c70001a9 | 807 | netdev_info(netdev, "NIC Link is up\n"); |
b84caae4 | 808 | netif_carrier_on(netdev); |
c70001a9 SC |
809 | } |
810 | } | |
811 | ||
d17dd0d9 SC |
812 | static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter, |
813 | struct qlcnic_host_rds_ring *rds_ring, | |
814 | struct qlcnic_rx_buffer *buffer) | |
c70001a9 SC |
815 | { |
816 | struct sk_buff *skb; | |
817 | dma_addr_t dma; | |
818 | struct pci_dev *pdev = adapter->pdev; | |
819 | ||
820 | skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size); | |
821 | if (!skb) { | |
822 | adapter->stats.skb_alloc_failure++; | |
823 | return -ENOMEM; | |
824 | } | |
825 | ||
826 | skb_reserve(skb, NET_IP_ALIGN); | |
4be41e92 SC |
827 | dma = pci_map_single(pdev, skb->data, |
828 | rds_ring->dma_size, PCI_DMA_FROMDEVICE); | |
c70001a9 SC |
829 | |
830 | if (pci_dma_mapping_error(pdev, dma)) { | |
831 | adapter->stats.rx_dma_map_error++; | |
832 | dev_kfree_skb_any(skb); | |
833 | return -ENOMEM; | |
834 | } | |
835 | ||
836 | buffer->skb = skb; | |
837 | buffer->dma = dma; | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
842 | static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, | |
4be41e92 SC |
843 | struct qlcnic_host_rds_ring *rds_ring, |
844 | u8 ring_id) | |
c70001a9 SC |
845 | { |
846 | struct rcv_desc *pdesc; | |
847 | struct qlcnic_rx_buffer *buffer; | |
848 | int count = 0; | |
4be41e92 | 849 | uint32_t producer, handle; |
c70001a9 SC |
850 | struct list_head *head; |
851 | ||
852 | if (!spin_trylock(&rds_ring->lock)) | |
853 | return; | |
854 | ||
855 | producer = rds_ring->producer; | |
c70001a9 | 856 | head = &rds_ring->free_list; |
d17dd0d9 | 857 | while (!list_empty(head)) { |
c70001a9 SC |
858 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); |
859 | ||
860 | if (!buffer->skb) { | |
861 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
862 | break; | |
863 | } | |
c70001a9 SC |
864 | count++; |
865 | list_del(&buffer->list); | |
866 | ||
867 | /* make a rcv descriptor */ | |
868 | pdesc = &rds_ring->desc_head[producer]; | |
4be41e92 SC |
869 | handle = qlcnic_get_ref_handle(adapter, |
870 | buffer->ref_handle, ring_id); | |
871 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 SC |
872 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
873 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
c70001a9 SC |
874 | producer = get_next_index(producer, rds_ring->num_desc); |
875 | } | |
c70001a9 SC |
876 | if (count) { |
877 | rds_ring->producer = producer; | |
878 | writel((producer - 1) & (rds_ring->num_desc - 1), | |
d17dd0d9 | 879 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
880 | } |
881 | spin_unlock(&rds_ring->lock); | |
882 | } | |
883 | ||
4be41e92 SC |
884 | static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter, |
885 | struct qlcnic_host_tx_ring *tx_ring, | |
886 | int budget) | |
c70001a9 SC |
887 | { |
888 | u32 sw_consumer, hw_consumer; | |
d17dd0d9 | 889 | int i, done, count = 0; |
c70001a9 SC |
890 | struct qlcnic_cmd_buffer *buffer; |
891 | struct pci_dev *pdev = adapter->pdev; | |
892 | struct net_device *netdev = adapter->netdev; | |
893 | struct qlcnic_skb_frag *frag; | |
c70001a9 | 894 | |
a02bdd42 | 895 | if (!spin_trylock(&tx_ring->tx_clean_lock)) |
34e8c406 HM |
896 | return 1; |
897 | ||
c70001a9 SC |
898 | sw_consumer = tx_ring->sw_consumer; |
899 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
900 | ||
901 | while (sw_consumer != hw_consumer) { | |
902 | buffer = &tx_ring->cmd_buf_arr[sw_consumer]; | |
903 | if (buffer->skb) { | |
904 | frag = &buffer->frag_array[0]; | |
905 | pci_unmap_single(pdev, frag->dma, frag->length, | |
906 | PCI_DMA_TODEVICE); | |
907 | frag->dma = 0ULL; | |
908 | for (i = 1; i < buffer->frag_count; i++) { | |
909 | frag++; | |
910 | pci_unmap_page(pdev, frag->dma, frag->length, | |
911 | PCI_DMA_TODEVICE); | |
912 | frag->dma = 0ULL; | |
913 | } | |
f27c75b3 | 914 | tx_ring->tx_stats.xmit_finished++; |
c70001a9 SC |
915 | dev_kfree_skb_any(buffer->skb); |
916 | buffer->skb = NULL; | |
917 | } | |
918 | ||
919 | sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); | |
4be41e92 | 920 | if (++count >= budget) |
c70001a9 SC |
921 | break; |
922 | } | |
923 | ||
a02bdd42 SS |
924 | tx_ring->sw_consumer = sw_consumer; |
925 | ||
c70001a9 | 926 | if (count && netif_running(netdev)) { |
c70001a9 | 927 | smp_mb(); |
012ec812 HM |
928 | if (netif_tx_queue_stopped(tx_ring->txq) && |
929 | netif_carrier_ok(netdev)) { | |
c70001a9 | 930 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
012ec812 | 931 | netif_tx_wake_queue(tx_ring->txq); |
f27c75b3 | 932 | tx_ring->tx_stats.xmit_on++; |
c70001a9 SC |
933 | } |
934 | } | |
935 | adapter->tx_timeo_cnt = 0; | |
936 | } | |
937 | /* | |
938 | * If everything is freed up to consumer then check if the ring is full | |
939 | * If the ring is full then check if more needs to be freed and | |
940 | * schedule the call back again. | |
941 | * | |
942 | * This happens when there are 2 CPUs. One could be freeing and the | |
943 | * other filling it. If the ring is full when we get out of here and | |
944 | * the card has already interrupted the host then the host can miss the | |
945 | * interrupt. | |
946 | * | |
947 | * There is still a possible race condition and the host could miss an | |
948 | * interrupt. The card has to take care of this. | |
949 | */ | |
950 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
951 | done = (sw_consumer == hw_consumer); | |
a02bdd42 SS |
952 | |
953 | spin_unlock(&tx_ring->tx_clean_lock); | |
c70001a9 SC |
954 | |
955 | return done; | |
956 | } | |
957 | ||
958 | static int qlcnic_poll(struct napi_struct *napi, int budget) | |
959 | { | |
4be41e92 | 960 | int tx_complete, work_done; |
d17dd0d9 SC |
961 | struct qlcnic_host_sds_ring *sds_ring; |
962 | struct qlcnic_adapter *adapter; | |
012ec812 | 963 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 964 | |
d17dd0d9 SC |
965 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
966 | adapter = sds_ring->adapter; | |
012ec812 HM |
967 | tx_ring = sds_ring->tx_ring; |
968 | ||
969 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, | |
4be41e92 | 970 | budget); |
c70001a9 | 971 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
f31ec95f SS |
972 | |
973 | /* Check if we need a repoll */ | |
974 | if (!tx_complete) | |
975 | work_done = budget; | |
976 | ||
977 | if (work_done < budget) { | |
c70001a9 | 978 | napi_complete(&sds_ring->napi); |
012ec812 | 979 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
2cc5752e | 980 | qlcnic_enable_sds_intr(adapter, sds_ring); |
012ec812 HM |
981 | qlcnic_enable_tx_intr(adapter, tx_ring); |
982 | } | |
983 | } | |
984 | ||
985 | return work_done; | |
986 | } | |
987 | ||
988 | static int qlcnic_tx_poll(struct napi_struct *napi, int budget) | |
989 | { | |
990 | struct qlcnic_host_tx_ring *tx_ring; | |
991 | struct qlcnic_adapter *adapter; | |
992 | int work_done; | |
993 | ||
994 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); | |
995 | adapter = tx_ring->adapter; | |
996 | ||
997 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
998 | if (work_done) { | |
999 | napi_complete(&tx_ring->napi); | |
1000 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
1001 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
f31ec95f SS |
1002 | } else { |
1003 | /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/ | |
1004 | work_done = budget; | |
c70001a9 SC |
1005 | } |
1006 | ||
1007 | return work_done; | |
1008 | } | |
1009 | ||
1010 | static int qlcnic_rx_poll(struct napi_struct *napi, int budget) | |
1011 | { | |
d17dd0d9 SC |
1012 | struct qlcnic_host_sds_ring *sds_ring; |
1013 | struct qlcnic_adapter *adapter; | |
c70001a9 SC |
1014 | int work_done; |
1015 | ||
d17dd0d9 SC |
1016 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1017 | adapter = sds_ring->adapter; | |
1018 | ||
c70001a9 SC |
1019 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
1020 | ||
1021 | if (work_done < budget) { | |
1022 | napi_complete(&sds_ring->napi); | |
1023 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
2cc5752e | 1024 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1025 | } |
1026 | ||
1027 | return work_done; | |
1028 | } | |
1029 | ||
d17dd0d9 SC |
1030 | static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, |
1031 | struct qlcnic_fw_msg *msg) | |
c70001a9 SC |
1032 | { |
1033 | u32 cable_OUI; | |
d17dd0d9 SC |
1034 | u16 cable_len, link_speed; |
1035 | u8 link_status, module, duplex, autoneg, lb_status = 0; | |
c70001a9 SC |
1036 | struct net_device *netdev = adapter->netdev; |
1037 | ||
79788450 | 1038 | adapter->ahw->has_link_events = 1; |
c70001a9 SC |
1039 | |
1040 | cable_OUI = msg->body[1] & 0xffffffff; | |
1041 | cable_len = (msg->body[1] >> 32) & 0xffff; | |
1042 | link_speed = (msg->body[1] >> 48) & 0xffff; | |
1043 | ||
1044 | link_status = msg->body[2] & 0xff; | |
1045 | duplex = (msg->body[2] >> 16) & 0xff; | |
1046 | autoneg = (msg->body[2] >> 24) & 0xff; | |
1047 | lb_status = (msg->body[2] >> 32) & 0x3; | |
1048 | ||
1049 | module = (msg->body[2] >> 8) & 0xff; | |
1050 | if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) | |
d17dd0d9 SC |
1051 | dev_info(&netdev->dev, |
1052 | "unsupported cable: OUI 0x%x, length %d\n", | |
1053 | cable_OUI, cable_len); | |
c70001a9 SC |
1054 | else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) |
1055 | dev_info(&netdev->dev, "unsupported cable length %d\n", | |
d17dd0d9 | 1056 | cable_len); |
c70001a9 SC |
1057 | |
1058 | if (!link_status && (lb_status == QLCNIC_ILB_MODE || | |
1059 | lb_status == QLCNIC_ELB_MODE)) | |
1060 | adapter->ahw->loopback_state |= QLCNIC_LINKEVENT; | |
1061 | ||
1062 | qlcnic_advert_link_change(adapter, link_status); | |
1063 | ||
1064 | if (duplex == LINKEVENT_FULL_DUPLEX) | |
79788450 | 1065 | adapter->ahw->link_duplex = DUPLEX_FULL; |
c70001a9 | 1066 | else |
79788450 | 1067 | adapter->ahw->link_duplex = DUPLEX_HALF; |
c70001a9 | 1068 | |
79788450 SC |
1069 | adapter->ahw->module_type = module; |
1070 | adapter->ahw->link_autoneg = autoneg; | |
c70001a9 SC |
1071 | |
1072 | if (link_status) { | |
79788450 | 1073 | adapter->ahw->link_speed = link_speed; |
c70001a9 | 1074 | } else { |
79788450 SC |
1075 | adapter->ahw->link_speed = SPEED_UNKNOWN; |
1076 | adapter->ahw->link_duplex = DUPLEX_UNKNOWN; | |
c70001a9 SC |
1077 | } |
1078 | } | |
1079 | ||
d17dd0d9 SC |
1080 | static void qlcnic_handle_fw_message(int desc_cnt, int index, |
1081 | struct qlcnic_host_sds_ring *sds_ring) | |
c70001a9 SC |
1082 | { |
1083 | struct qlcnic_fw_msg msg; | |
1084 | struct status_desc *desc; | |
1085 | struct qlcnic_adapter *adapter; | |
1086 | struct device *dev; | |
1087 | int i = 0, opcode, ret; | |
1088 | ||
1089 | while (desc_cnt > 0 && i < 8) { | |
1090 | desc = &sds_ring->desc_head[index]; | |
1091 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]); | |
1092 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]); | |
1093 | ||
1094 | index = get_next_index(index, sds_ring->num_desc); | |
1095 | desc_cnt--; | |
1096 | } | |
1097 | ||
1098 | adapter = sds_ring->adapter; | |
1099 | dev = &adapter->pdev->dev; | |
1100 | opcode = qlcnic_get_nic_msg_opcode(msg.body[0]); | |
1101 | ||
1102 | switch (opcode) { | |
1103 | case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE: | |
1104 | qlcnic_handle_linkevent(adapter, &msg); | |
1105 | break; | |
1106 | case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK: | |
1107 | ret = (u32)(msg.body[1]); | |
1108 | switch (ret) { | |
1109 | case 0: | |
1110 | adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE; | |
1111 | break; | |
1112 | case 1: | |
1113 | dev_info(dev, "loopback already in progress\n"); | |
b9c11984 | 1114 | adapter->ahw->diag_cnt = -EINPROGRESS; |
c70001a9 SC |
1115 | break; |
1116 | case 2: | |
1117 | dev_info(dev, "loopback cable is not connected\n"); | |
b9c11984 | 1118 | adapter->ahw->diag_cnt = -ENODEV; |
c70001a9 SC |
1119 | break; |
1120 | default: | |
d17dd0d9 SC |
1121 | dev_info(dev, |
1122 | "loopback configure request failed, err %x\n", | |
1123 | ret); | |
b9c11984 | 1124 | adapter->ahw->diag_cnt = -EIO; |
c70001a9 SC |
1125 | break; |
1126 | } | |
1127 | break; | |
2d8ebcab | 1128 | case QLCNIC_C2H_OPCODE_GET_DCB_AEN: |
1de899d3 | 1129 | qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg); |
2d8ebcab | 1130 | break; |
c70001a9 SC |
1131 | default: |
1132 | break; | |
1133 | } | |
1134 | } | |
1135 | ||
21041400 | 1136 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
1137 | struct qlcnic_host_rds_ring *ring, | |
1138 | u16 index, u16 cksum) | |
c70001a9 SC |
1139 | { |
1140 | struct qlcnic_rx_buffer *buffer; | |
1141 | struct sk_buff *skb; | |
1142 | ||
4be41e92 | 1143 | buffer = &ring->rx_buf_arr[index]; |
c70001a9 SC |
1144 | if (unlikely(buffer->skb == NULL)) { |
1145 | WARN_ON(1); | |
1146 | return NULL; | |
1147 | } | |
1148 | ||
4be41e92 | 1149 | pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size, |
d17dd0d9 | 1150 | PCI_DMA_FROMDEVICE); |
c70001a9 SC |
1151 | |
1152 | skb = buffer->skb; | |
c70001a9 | 1153 | if (likely((adapter->netdev->features & NETIF_F_RXCSUM) && |
d17dd0d9 | 1154 | (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) { |
c70001a9 SC |
1155 | adapter->stats.csummed++; |
1156 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1157 | } else { | |
1158 | skb_checksum_none_assert(skb); | |
1159 | } | |
1160 | ||
4be41e92 | 1161 | |
c70001a9 SC |
1162 | buffer->skb = NULL; |
1163 | ||
1164 | return skb; | |
1165 | } | |
1166 | ||
d17dd0d9 SC |
1167 | static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, |
1168 | struct sk_buff *skb, u16 *vlan_tag) | |
c70001a9 SC |
1169 | { |
1170 | struct ethhdr *eth_hdr; | |
1171 | ||
1172 | if (!__vlan_get_tag(skb, vlan_tag)) { | |
d17dd0d9 | 1173 | eth_hdr = (struct ethhdr *)skb->data; |
c70001a9 SC |
1174 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); |
1175 | skb_pull(skb, VLAN_HLEN); | |
1176 | } | |
91b7282b | 1177 | if (!adapter->rx_pvid) |
c70001a9 SC |
1178 | return 0; |
1179 | ||
91b7282b | 1180 | if (*vlan_tag == adapter->rx_pvid) { |
c70001a9 SC |
1181 | /* Outer vlan tag. Packet should follow non-vlan path */ |
1182 | *vlan_tag = 0xffff; | |
1183 | return 0; | |
1184 | } | |
1185 | if (adapter->flags & QLCNIC_TAGGING_ENABLED) | |
1186 | return 0; | |
1187 | ||
1188 | return -EINVAL; | |
1189 | } | |
1190 | ||
1191 | static struct qlcnic_rx_buffer * | |
1192 | qlcnic_process_rcv(struct qlcnic_adapter *adapter, | |
d17dd0d9 SC |
1193 | struct qlcnic_host_sds_ring *sds_ring, int ring, |
1194 | u64 sts_data0) | |
c70001a9 SC |
1195 | { |
1196 | struct net_device *netdev = adapter->netdev; | |
1197 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1198 | struct qlcnic_rx_buffer *buffer; | |
1199 | struct sk_buff *skb; | |
1200 | struct qlcnic_host_rds_ring *rds_ring; | |
53643a75 SS |
1201 | int index, length, cksum, pkt_offset, is_lb_pkt; |
1202 | u16 vid = 0xffff, t_vid; | |
c70001a9 SC |
1203 | |
1204 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1205 | return NULL; | |
1206 | ||
1207 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1208 | ||
1209 | index = qlcnic_get_sts_refhandle(sts_data0); | |
1210 | if (unlikely(index >= rds_ring->num_desc)) | |
1211 | return NULL; | |
1212 | ||
1213 | buffer = &rds_ring->rx_buf_arr[index]; | |
c70001a9 SC |
1214 | length = qlcnic_get_sts_totallength(sts_data0); |
1215 | cksum = qlcnic_get_sts_status(sts_data0); | |
1216 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
1217 | ||
1218 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1219 | if (!skb) | |
1220 | return buffer; | |
1221 | ||
ddfbac07 | 1222 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1223 | t_vid = 0; |
1224 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1225 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1226 | } |
1227 | ||
c70001a9 SC |
1228 | if (length > rds_ring->skb_size) |
1229 | skb_put(skb, rds_ring->skb_size); | |
1230 | else | |
1231 | skb_put(skb, length); | |
1232 | ||
1233 | if (pkt_offset) | |
1234 | skb_pull(skb, pkt_offset); | |
1235 | ||
1236 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1237 | adapter->stats.rxdropped++; | |
1238 | dev_kfree_skb(skb); | |
1239 | return buffer; | |
1240 | } | |
1241 | ||
1242 | skb->protocol = eth_type_trans(skb, netdev); | |
1243 | ||
1244 | if (vid != 0xffff) | |
86a9bad3 | 1245 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1246 | |
1247 | napi_gro_receive(&sds_ring->napi, skb); | |
1248 | ||
1249 | adapter->stats.rx_pkts++; | |
1250 | adapter->stats.rxbytes += length; | |
1251 | ||
1252 | return buffer; | |
1253 | } | |
1254 | ||
1255 | #define QLC_TCP_HDR_SIZE 20 | |
1256 | #define QLC_TCP_TS_OPTION_SIZE 12 | |
1257 | #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE) | |
1258 | ||
1259 | static struct qlcnic_rx_buffer * | |
1260 | qlcnic_process_lro(struct qlcnic_adapter *adapter, | |
d17dd0d9 | 1261 | int ring, u64 sts_data0, u64 sts_data1) |
c70001a9 SC |
1262 | { |
1263 | struct net_device *netdev = adapter->netdev; | |
1264 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1265 | struct qlcnic_rx_buffer *buffer; | |
1266 | struct sk_buff *skb; | |
1267 | struct qlcnic_host_rds_ring *rds_ring; | |
1268 | struct iphdr *iph; | |
776e7bde | 1269 | struct ipv6hdr *ipv6h; |
c70001a9 SC |
1270 | struct tcphdr *th; |
1271 | bool push, timestamp; | |
53643a75 SS |
1272 | int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt; |
1273 | u16 lro_length, length, data_offset, t_vid, vid = 0xffff; | |
c70001a9 | 1274 | u32 seq_number; |
c70001a9 | 1275 | |
462bed48 | 1276 | if (unlikely(ring >= adapter->max_rds_rings)) |
c70001a9 SC |
1277 | return NULL; |
1278 | ||
1279 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1280 | ||
1281 | index = qlcnic_get_lro_sts_refhandle(sts_data0); | |
462bed48 | 1282 | if (unlikely(index >= rds_ring->num_desc)) |
c70001a9 SC |
1283 | return NULL; |
1284 | ||
1285 | buffer = &rds_ring->rx_buf_arr[index]; | |
1286 | ||
1287 | timestamp = qlcnic_get_lro_sts_timestamp(sts_data0); | |
1288 | lro_length = qlcnic_get_lro_sts_length(sts_data0); | |
1289 | l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0); | |
1290 | l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0); | |
1291 | push = qlcnic_get_lro_sts_push_flag(sts_data0); | |
1292 | seq_number = qlcnic_get_lro_sts_seq_number(sts_data1); | |
1293 | ||
1294 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1295 | if (!skb) | |
1296 | return buffer; | |
1297 | ||
ddfbac07 | 1298 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1299 | t_vid = 0; |
1300 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1301 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1302 | } |
1303 | ||
c70001a9 SC |
1304 | if (timestamp) |
1305 | data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE; | |
1306 | else | |
1307 | data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE; | |
1308 | ||
1309 | skb_put(skb, lro_length + data_offset); | |
c70001a9 SC |
1310 | skb_pull(skb, l2_hdr_offset); |
1311 | ||
1312 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1313 | adapter->stats.rxdropped++; | |
1314 | dev_kfree_skb(skb); | |
1315 | return buffer; | |
1316 | } | |
1317 | ||
1318 | skb->protocol = eth_type_trans(skb, netdev); | |
776e7bde | 1319 | |
069048f1 | 1320 | if (ntohs(skb->protocol) == ETH_P_IPV6) { |
776e7bde SS |
1321 | ipv6h = (struct ipv6hdr *)skb->data; |
1322 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); | |
1323 | length = (th->doff << 2) + lro_length; | |
1324 | ipv6h->payload_len = htons(length); | |
1325 | } else { | |
1326 | iph = (struct iphdr *)skb->data; | |
1327 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
1328 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; | |
1bcac3b0 | 1329 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
776e7bde | 1330 | iph->tot_len = htons(length); |
776e7bde SS |
1331 | } |
1332 | ||
c70001a9 SC |
1333 | th->psh = push; |
1334 | th->seq = htonl(seq_number); | |
c70001a9 SC |
1335 | length = skb->len; |
1336 | ||
bd69ba79 | 1337 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
c70001a9 | 1338 | skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1); |
bd69ba79 MT |
1339 | if (skb->protocol == htons(ETH_P_IPV6)) |
1340 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; | |
1341 | else | |
1342 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; | |
1343 | } | |
c70001a9 SC |
1344 | |
1345 | if (vid != 0xffff) | |
86a9bad3 | 1346 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1347 | netif_receive_skb(skb); |
1348 | ||
1349 | adapter->stats.lro_pkts++; | |
1350 | adapter->stats.lrobytes += length; | |
1351 | ||
1352 | return buffer; | |
1353 | } | |
1354 | ||
21041400 | 1355 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) |
c70001a9 | 1356 | { |
d17dd0d9 | 1357 | struct qlcnic_host_rds_ring *rds_ring; |
c70001a9 SC |
1358 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1359 | struct list_head *cur; | |
1360 | struct status_desc *desc; | |
1361 | struct qlcnic_rx_buffer *rxbuf; | |
4be41e92 | 1362 | int opcode, desc_cnt, count = 0; |
c70001a9 | 1363 | u64 sts_data0, sts_data1; |
4be41e92 | 1364 | u8 ring; |
c70001a9 SC |
1365 | u32 consumer = sds_ring->consumer; |
1366 | ||
1367 | while (count < max) { | |
1368 | desc = &sds_ring->desc_head[consumer]; | |
1369 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1370 | ||
1371 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1372 | break; | |
1373 | ||
1374 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1375 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
c70001a9 SC |
1376 | switch (opcode) { |
1377 | case QLCNIC_RXPKT_DESC: | |
1378 | case QLCNIC_OLD_RXPKT_DESC: | |
1379 | case QLCNIC_SYN_OFFLOAD: | |
1380 | ring = qlcnic_get_sts_type(sts_data0); | |
d17dd0d9 SC |
1381 | rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, |
1382 | sts_data0); | |
c70001a9 SC |
1383 | break; |
1384 | case QLCNIC_LRO_DESC: | |
1385 | ring = qlcnic_get_lro_sts_type(sts_data0); | |
1386 | sts_data1 = le64_to_cpu(desc->status_desc_data[1]); | |
1387 | rxbuf = qlcnic_process_lro(adapter, ring, sts_data0, | |
1388 | sts_data1); | |
1389 | break; | |
1390 | case QLCNIC_RESPONSE_DESC: | |
1391 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1392 | default: | |
1393 | goto skip; | |
1394 | } | |
c70001a9 SC |
1395 | WARN_ON(desc_cnt > 1); |
1396 | ||
1397 | if (likely(rxbuf)) | |
1398 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1399 | else | |
1400 | adapter->stats.null_rxbuf++; | |
c70001a9 SC |
1401 | skip: |
1402 | for (; desc_cnt > 0; desc_cnt--) { | |
1403 | desc = &sds_ring->desc_head[consumer]; | |
4be41e92 | 1404 | desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW; |
c70001a9 SC |
1405 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1406 | } | |
1407 | count++; | |
1408 | } | |
1409 | ||
1410 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
d17dd0d9 | 1411 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
c70001a9 SC |
1412 | if (!list_empty(&sds_ring->free_list[ring])) { |
1413 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
d17dd0d9 SC |
1414 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1415 | list); | |
c70001a9 SC |
1416 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); |
1417 | } | |
1418 | spin_lock(&rds_ring->lock); | |
1419 | list_splice_tail_init(&sds_ring->free_list[ring], | |
d17dd0d9 | 1420 | &rds_ring->free_list); |
c70001a9 SC |
1421 | spin_unlock(&rds_ring->lock); |
1422 | } | |
1423 | ||
4be41e92 | 1424 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); |
c70001a9 SC |
1425 | } |
1426 | ||
1427 | if (count) { | |
1428 | sds_ring->consumer = consumer; | |
1429 | writel(consumer, sds_ring->crb_sts_consumer); | |
1430 | } | |
1431 | ||
1432 | return count; | |
1433 | } | |
1434 | ||
d17dd0d9 | 1435 | void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, |
4be41e92 | 1436 | struct qlcnic_host_rds_ring *rds_ring, u8 ring_id) |
c70001a9 SC |
1437 | { |
1438 | struct rcv_desc *pdesc; | |
1439 | struct qlcnic_rx_buffer *buffer; | |
1440 | int count = 0; | |
4be41e92 | 1441 | u32 producer, handle; |
c70001a9 SC |
1442 | struct list_head *head; |
1443 | ||
1444 | producer = rds_ring->producer; | |
c70001a9 | 1445 | head = &rds_ring->free_list; |
d17dd0d9 | 1446 | |
c70001a9 SC |
1447 | while (!list_empty(head)) { |
1448 | ||
1449 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); | |
1450 | ||
1451 | if (!buffer->skb) { | |
1452 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
1453 | break; | |
1454 | } | |
1455 | ||
1456 | count++; | |
1457 | list_del(&buffer->list); | |
1458 | ||
1459 | /* make a rcv descriptor */ | |
1460 | pdesc = &rds_ring->desc_head[producer]; | |
1461 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
4be41e92 SC |
1462 | handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle, |
1463 | ring_id); | |
1464 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 | 1465 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
c70001a9 SC |
1466 | producer = get_next_index(producer, rds_ring->num_desc); |
1467 | } | |
1468 | ||
1469 | if (count) { | |
1470 | rds_ring->producer = producer; | |
1471 | writel((producer-1) & (rds_ring->num_desc-1), | |
d17dd0d9 | 1472 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
1473 | } |
1474 | } | |
1475 | ||
1476 | static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter) | |
1477 | { | |
3620af0e JP |
1478 | if (adapter->ahw->msg_enable & NETIF_MSG_DRV) { |
1479 | char prefix[30]; | |
1480 | ||
1481 | scnprintf(prefix, sizeof(prefix), "%s: %s: ", | |
1482 | dev_name(&adapter->pdev->dev), __func__); | |
1483 | ||
1484 | print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1, | |
1485 | skb->data, skb->len, true); | |
c70001a9 SC |
1486 | } |
1487 | } | |
1488 | ||
1489 | static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring, | |
1490 | u64 sts_data0) | |
1491 | { | |
1492 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1493 | struct sk_buff *skb; | |
1494 | struct qlcnic_host_rds_ring *rds_ring; | |
1495 | int index, length, cksum, pkt_offset; | |
1496 | ||
1497 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1498 | return; | |
1499 | ||
1500 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1501 | ||
1502 | index = qlcnic_get_sts_refhandle(sts_data0); | |
1503 | length = qlcnic_get_sts_totallength(sts_data0); | |
1504 | if (unlikely(index >= rds_ring->num_desc)) | |
1505 | return; | |
1506 | ||
1507 | cksum = qlcnic_get_sts_status(sts_data0); | |
1508 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
1509 | ||
1510 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1511 | if (!skb) | |
1512 | return; | |
1513 | ||
1514 | if (length > rds_ring->skb_size) | |
1515 | skb_put(skb, rds_ring->skb_size); | |
1516 | else | |
1517 | skb_put(skb, length); | |
1518 | ||
1519 | if (pkt_offset) | |
1520 | skb_pull(skb, pkt_offset); | |
1521 | ||
1522 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
79788450 | 1523 | adapter->ahw->diag_cnt++; |
c70001a9 SC |
1524 | else |
1525 | dump_skb(skb, adapter); | |
1526 | ||
1527 | dev_kfree_skb_any(skb); | |
1528 | adapter->stats.rx_pkts++; | |
1529 | adapter->stats.rxbytes += length; | |
1530 | ||
1531 | return; | |
1532 | } | |
1533 | ||
7e2cf4fe | 1534 | void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
c70001a9 SC |
1535 | { |
1536 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1537 | struct status_desc *desc; | |
1538 | u64 sts_data0; | |
1539 | int ring, opcode, desc_cnt; | |
1540 | ||
1541 | u32 consumer = sds_ring->consumer; | |
1542 | ||
1543 | desc = &sds_ring->desc_head[consumer]; | |
1544 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1545 | ||
1546 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1547 | return; | |
1548 | ||
1549 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1550 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
1551 | switch (opcode) { | |
1552 | case QLCNIC_RESPONSE_DESC: | |
1553 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1554 | break; | |
1555 | default: | |
1556 | ring = qlcnic_get_sts_type(sts_data0); | |
1557 | qlcnic_process_rcv_diag(adapter, ring, sts_data0); | |
1558 | break; | |
1559 | } | |
1560 | ||
1561 | for (; desc_cnt > 0; desc_cnt--) { | |
1562 | desc = &sds_ring->desc_head[consumer]; | |
1563 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
1564 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1565 | } | |
1566 | ||
1567 | sds_ring->consumer = consumer; | |
1568 | writel(consumer, sds_ring->crb_sts_consumer); | |
1569 | } | |
1570 | ||
7e2cf4fe SC |
1571 | int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
1572 | struct net_device *netdev) | |
c70001a9 | 1573 | { |
df95fc44 | 1574 | int ring; |
c70001a9 SC |
1575 | struct qlcnic_host_sds_ring *sds_ring; |
1576 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1577 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1578 | |
34e8c406 | 1579 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
c70001a9 SC |
1580 | return -ENOMEM; |
1581 | ||
34e8c406 | 1582 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1583 | sds_ring = &recv_ctx->sds_rings[ring]; |
012ec812 | 1584 | if (qlcnic_check_multi_tx(adapter) && |
80c0e4f3 | 1585 | !adapter->ahw->diag_test) { |
d17dd0d9 | 1586 | netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll, |
df95fc44 | 1587 | NAPI_POLL_WEIGHT); |
012ec812 | 1588 | } else { |
34e8c406 | 1589 | if (ring == (adapter->drv_sds_rings - 1)) |
012ec812 HM |
1590 | netif_napi_add(netdev, &sds_ring->napi, |
1591 | qlcnic_poll, | |
df95fc44 | 1592 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1593 | else |
1594 | netif_napi_add(netdev, &sds_ring->napi, | |
1595 | qlcnic_rx_poll, | |
df95fc44 | 1596 | NAPI_POLL_WEIGHT); |
012ec812 | 1597 | } |
c70001a9 SC |
1598 | } |
1599 | ||
4be41e92 SC |
1600 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
1601 | qlcnic_free_sds_rings(recv_ctx); | |
1602 | return -ENOMEM; | |
1603 | } | |
1604 | ||
c2c5e3a0 | 1605 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1606 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 | 1607 | tx_ring = &adapter->tx_ring[ring]; |
d64b5e85 | 1608 | netif_tx_napi_add(netdev, &tx_ring->napi, qlcnic_tx_poll, |
df95fc44 | 1609 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1610 | } |
1611 | } | |
1612 | ||
c70001a9 SC |
1613 | return 0; |
1614 | } | |
1615 | ||
4be41e92 | 1616 | void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1617 | { |
1618 | int ring; | |
1619 | struct qlcnic_host_sds_ring *sds_ring; | |
1620 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1621 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1622 | |
34e8c406 | 1623 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1624 | sds_ring = &recv_ctx->sds_rings[ring]; |
1625 | netif_napi_del(&sds_ring->napi); | |
1626 | } | |
1627 | ||
1628 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
012ec812 | 1629 | |
c2c5e3a0 | 1630 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1631 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1632 | tx_ring = &adapter->tx_ring[ring]; |
1633 | netif_napi_del(&tx_ring->napi); | |
1634 | } | |
1635 | } | |
1636 | ||
4be41e92 | 1637 | qlcnic_free_tx_rings(adapter); |
c70001a9 SC |
1638 | } |
1639 | ||
7e2cf4fe | 1640 | void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1641 | { |
1642 | int ring; | |
1643 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1644 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1645 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1646 | ||
1647 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1648 | return; | |
1649 | ||
34e8c406 | 1650 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1651 | sds_ring = &recv_ctx->sds_rings[ring]; |
1652 | napi_enable(&sds_ring->napi); | |
2cc5752e | 1653 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 | 1654 | } |
012ec812 HM |
1655 | |
1656 | if (qlcnic_check_multi_tx(adapter) && | |
1657 | (adapter->flags & QLCNIC_MSIX_ENABLED) && | |
80c0e4f3 | 1658 | !adapter->ahw->diag_test) { |
34e8c406 | 1659 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1660 | tx_ring = &adapter->tx_ring[ring]; |
1661 | napi_enable(&tx_ring->napi); | |
1662 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
1663 | } | |
1664 | } | |
c70001a9 SC |
1665 | } |
1666 | ||
7e2cf4fe | 1667 | void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1668 | { |
1669 | int ring; | |
1670 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1671 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1672 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1673 | ||
1674 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1675 | return; | |
1676 | ||
34e8c406 | 1677 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1678 | sds_ring = &recv_ctx->sds_rings[ring]; |
2cc5752e | 1679 | qlcnic_disable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1680 | napi_synchronize(&sds_ring->napi); |
1681 | napi_disable(&sds_ring->napi); | |
1682 | } | |
012ec812 HM |
1683 | |
1684 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && | |
c2c5e3a0 | 1685 | !adapter->ahw->diag_test && |
012ec812 | 1686 | qlcnic_check_multi_tx(adapter)) { |
34e8c406 | 1687 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 | 1688 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 1689 | qlcnic_disable_tx_intr(adapter, tx_ring); |
012ec812 HM |
1690 | napi_synchronize(&tx_ring->napi); |
1691 | napi_disable(&tx_ring->napi); | |
1692 | } | |
1693 | } | |
c70001a9 | 1694 | } |
4be41e92 | 1695 | |
53643a75 SS |
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 | ||
2b3d7b75 SS |
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 | ||
4be41e92 SC |
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; | |
53643a75 | 1724 | int index, length, cksum, is_lb_pkt; |
b3f7de83 SC |
1725 | u16 vid = 0xffff; |
1726 | int err; | |
4be41e92 SC |
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, rds_ring, index, cksum); | |
1741 | if (!skb) | |
1742 | return buffer; | |
1743 | ||
1744 | if (length > rds_ring->skb_size) | |
1745 | skb_put(skb, rds_ring->skb_size); | |
1746 | else | |
1747 | skb_put(skb, length); | |
1748 | ||
b3f7de83 SC |
1749 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1750 | ||
1751 | if (adapter->rx_mac_learn) { | |
1752 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0); | |
1753 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1754 | } | |
1755 | ||
1756 | if (unlikely(err)) { | |
4be41e92 SC |
1757 | adapter->stats.rxdropped++; |
1758 | dev_kfree_skb(skb); | |
1759 | return buffer; | |
1760 | } | |
1761 | ||
1762 | skb->protocol = eth_type_trans(skb, netdev); | |
1763 | ||
2b3d7b75 SS |
1764 | if (qlcnic_encap_length(sts_data[1]) && |
1765 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
71d7a277 | 1766 | skb->csum_level = 1; |
2b3d7b75 SS |
1767 | adapter->stats.encap_rx_csummed++; |
1768 | } | |
1769 | ||
4be41e92 | 1770 | if (vid != 0xffff) |
86a9bad3 | 1771 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
1772 | |
1773 | napi_gro_receive(&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; | |
53643a75 | 1795 | int index, is_lb_pkt; |
99e85879 | 1796 | u16 lro_length, length, data_offset, gso_size; |
b3f7de83 SC |
1797 | u16 vid = 0xffff; |
1798 | int err; | |
4be41e92 | 1799 | |
462bed48 | 1800 | if (unlikely(ring >= adapter->max_rds_rings)) |
4be41e92 SC |
1801 | return NULL; |
1802 | ||
1803 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1804 | ||
1805 | index = qlcnic_83xx_hndl(sts_data[0]); | |
462bed48 | 1806 | if (unlikely(index >= rds_ring->num_desc)) |
4be41e92 SC |
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, rds_ring, index, STATUS_CKSUM_OK); | |
1817 | if (!skb) | |
1818 | return buffer; | |
53643a75 | 1819 | |
4be41e92 SC |
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, lro_length + data_offset); | |
1826 | skb_pull(skb, l2_hdr_offset); | |
1827 | ||
b3f7de83 SC |
1828 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1829 | ||
1830 | if (adapter->rx_mac_learn) { | |
1831 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1); | |
1832 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1833 | } | |
1834 | ||
1835 | if (unlikely(err)) { | |
4be41e92 SC |
1836 | adapter->stats.rxdropped++; |
1837 | dev_kfree_skb(skb); | |
1838 | return buffer; | |
1839 | } | |
1840 | ||
1841 | skb->protocol = eth_type_trans(skb, 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; | |
1bcac3b0 | 1852 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
4be41e92 | 1853 | iph->tot_len = htons(length); |
4be41e92 SC |
1854 | } |
1855 | ||
1856 | th->psh = push; | |
1857 | length = skb->len; | |
1858 | ||
99e85879 SS |
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 | ||
4be41e92 | 1868 | if (vid != 0xffff) |
86a9bad3 | 1869 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
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, | |
0b1587b1 | 1911 | "Unknown opcode: 0x%x\n", opcode); |
4be41e92 SC |
1912 | goto skip; |
1913 | } | |
1914 | ||
1915 | if (likely(rxbuf)) | |
1916 | list_add_tail(&rxbuf->list, &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(&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, rxbuf); | |
1933 | } | |
1934 | spin_lock(&rds_ring->lock); | |
1935 | list_splice_tail_init(&sds_ring->free_list[ring], | |
1936 | &rds_ring->free_list); | |
1937 | spin_unlock(&rds_ring->lock); | |
1938 | } | |
1939 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); | |
1940 | } | |
1941 | if (count) { | |
1942 | sds_ring->consumer = consumer; | |
1943 | writel(consumer, sds_ring->crb_sts_consumer); | |
1944 | } | |
1945 | return count; | |
1946 | } | |
1947 | ||
da6c8063 RB |
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, budget); | |
f31ec95f SS |
1963 | |
1964 | /* Check if we need a repoll */ | |
1965 | if (!tx_complete) | |
1966 | work_done = budget; | |
1967 | ||
1968 | if (work_done < budget) { | |
da6c8063 | 1969 | napi_complete(&sds_ring->napi); |
2cc5752e | 1970 | qlcnic_enable_sds_intr(adapter, sds_ring); |
da6c8063 RB |
1971 | } |
1972 | ||
1973 | return work_done; | |
1974 | } | |
1975 | ||
4be41e92 SC |
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 | ||
4be41e92 SC |
1989 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
1990 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
f31ec95f SS |
1991 | |
1992 | /* Check if we need a repoll */ | |
1993 | if (!tx_complete) | |
1994 | work_done = budget; | |
1995 | ||
1996 | if (work_done < budget) { | |
4be41e92 | 1997 | napi_complete(&sds_ring->napi); |
2cc5752e | 1998 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
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 | ||
4be41e92 SC |
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(&tx_ring->napi); | |
2015 | if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) | |
2cc5752e | 2016 | qlcnic_enable_tx_intr(adapter, tx_ring); |
f31ec95f SS |
2017 | } else { |
2018 | /* need a repoll */ | |
2019 | work_done = budget; | |
4be41e92 SC |
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, budget); | |
2034 | if (work_done < budget) { | |
2035 | napi_complete(&sds_ring->napi); | |
2036 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
2cc5752e | 2037 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
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 | ||
34e8c406 | 2053 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2054 | sds_ring = &recv_ctx->sds_rings[ring]; |
2055 | napi_enable(&sds_ring->napi); | |
ac166700 | 2056 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2057 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2058 | } |
2059 | ||
da6c8063 RB |
2060 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2061 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2062 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2063 | tx_ring = &adapter->tx_ring[ring]; |
2064 | napi_enable(&tx_ring->napi); | |
2cc5752e | 2065 | qlcnic_enable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
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 | ||
34e8c406 | 2080 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2081 | sds_ring = &recv_ctx->sds_rings[ring]; |
ac166700 | 2082 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2083 | qlcnic_disable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2084 | napi_synchronize(&sds_ring->napi); |
2085 | napi_disable(&sds_ring->napi); | |
2086 | } | |
2087 | ||
da6c8063 RB |
2088 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2089 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2090 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 | 2091 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 2092 | qlcnic_disable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
2093 | napi_synchronize(&tx_ring->napi); |
2094 | napi_disable(&tx_ring->napi); | |
2095 | } | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, | |
2100 | struct net_device *netdev) | |
2101 | { | |
df95fc44 | 2102 | int ring; |
4be41e92 SC |
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 | ||
34e8c406 | 2107 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
4be41e92 SC |
2108 | return -ENOMEM; |
2109 | ||
34e8c406 | 2110 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2111 | sds_ring = &recv_ctx->sds_rings[ring]; |
da6c8063 | 2112 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
df95fc44 | 2113 | if (!(adapter->flags & QLCNIC_TX_INTR_SHARED)) |
da6c8063 RB |
2114 | netif_napi_add(netdev, &sds_ring->napi, |
2115 | qlcnic_83xx_rx_poll, | |
df95fc44 MS |
2116 | NAPI_POLL_WEIGHT); |
2117 | else | |
da6c8063 RB |
2118 | netif_napi_add(netdev, &sds_ring->napi, |
2119 | qlcnic_83xx_msix_sriov_vf_poll, | |
df95fc44 | 2120 | NAPI_POLL_WEIGHT); |
da6c8063 RB |
2121 | |
2122 | } else { | |
4be41e92 SC |
2123 | netif_napi_add(netdev, &sds_ring->napi, |
2124 | qlcnic_83xx_poll, | |
df95fc44 | 2125 | NAPI_POLL_WEIGHT); |
da6c8063 | 2126 | } |
4be41e92 SC |
2127 | } |
2128 | ||
2129 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { | |
2130 | qlcnic_free_sds_rings(recv_ctx); | |
2131 | return -ENOMEM; | |
2132 | } | |
2133 | ||
da6c8063 RB |
2134 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2135 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2136 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 | 2137 | tx_ring = &adapter->tx_ring[ring]; |
d64b5e85 | 2138 | netif_tx_napi_add(netdev, &tx_ring->napi, |
4be41e92 | 2139 | qlcnic_83xx_msix_tx_poll, |
df95fc44 | 2140 | NAPI_POLL_WEIGHT); |
4be41e92 SC |
2141 | } |
2142 | } | |
2143 | ||
2144 | return 0; | |
2145 | } | |
2146 | ||
2147 | void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) | |
2148 | { | |
2149 | int ring; | |
2150 | struct qlcnic_host_sds_ring *sds_ring; | |
2151 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2152 | struct qlcnic_host_tx_ring *tx_ring; | |
2153 | ||
34e8c406 | 2154 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2155 | sds_ring = &recv_ctx->sds_rings[ring]; |
2156 | netif_napi_del(&sds_ring->napi); | |
2157 | } | |
2158 | ||
2159 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
2160 | ||
da6c8063 RB |
2161 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2162 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2163 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2164 | tx_ring = &adapter->tx_ring[ring]; |
2165 | netif_napi_del(&tx_ring->napi); | |
2166 | } | |
2167 | } | |
2168 | ||
2169 | qlcnic_free_tx_rings(adapter); | |
2170 | } | |
2171 | ||
21041400 | 2172 | static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, |
2173 | int ring, u64 sts_data[]) | |
4be41e92 SC |
2174 | { |
2175 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2176 | struct sk_buff *skb; | |
2177 | struct qlcnic_host_rds_ring *rds_ring; | |
2178 | int index, length; | |
2179 | ||
2180 | if (unlikely(ring >= adapter->max_rds_rings)) | |
2181 | return; | |
2182 | ||
2183 | rds_ring = &recv_ctx->rds_rings[ring]; | |
2184 | index = qlcnic_83xx_hndl(sts_data[0]); | |
2185 | if (unlikely(index >= rds_ring->num_desc)) | |
2186 | return; | |
2187 | ||
2188 | length = qlcnic_83xx_pktln(sts_data[0]); | |
2189 | ||
2190 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
2191 | if (!skb) | |
2192 | return; | |
2193 | ||
2194 | if (length > rds_ring->skb_size) | |
2195 | skb_put(skb, rds_ring->skb_size); | |
2196 | else | |
2197 | skb_put(skb, length); | |
2198 | ||
2199 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
2200 | adapter->ahw->diag_cnt++; | |
2201 | else | |
2202 | dump_skb(skb, adapter); | |
2203 | ||
2204 | dev_kfree_skb_any(skb); | |
2205 | return; | |
2206 | } | |
2207 | ||
2208 | void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) | |
2209 | { | |
2210 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
2211 | struct status_desc *desc; | |
2212 | u64 sts_data[2]; | |
2213 | int ring, opcode; | |
2214 | u32 consumer = sds_ring->consumer; | |
2215 | ||
2216 | desc = &sds_ring->desc_head[consumer]; | |
2217 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
2218 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
2219 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
2220 | if (!opcode) | |
2221 | return; | |
2222 | ||
5b4d10f5 | 2223 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); |
4be41e92 SC |
2224 | qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); |
2225 | desc = &sds_ring->desc_head[consumer]; | |
2226 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
2227 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
2228 | sds_ring->consumer = consumer; | |
2229 | writel(consumer, sds_ring->crb_sts_consumer); | |
2230 | } |