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> |
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_TX_POLL_BUDGET 128 |
105 | #define QLCNIC_TCP_HDR_SIZE 20 | |
106 | #define QLCNIC_TCP_TS_OPTION_SIZE 12 | |
107 | #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63) | |
108 | #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM) | |
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); | |
323 | } else if (vlan_tx_tag_present(skb)) { | |
324 | vlan_id = vlan_tx_tag_get(skb); | |
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); | |
475 | } else if (vlan_tx_tag_present(skb)) { | |
381709de | 476 | flags = QLCNIC_FLAGS_VLAN_OOB; |
c70001a9 SC |
477 | vlan_tci = vlan_tx_tag_get(skb); |
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 SC |
773 | |
774 | qlcnic_update_cmd_producer(tx_ring); | |
775 | ||
776 | return NETDEV_TX_OK; | |
777 | ||
778 | unwind_buff: | |
779 | qlcnic_unmap_buffers(pdev, skb, pbuf); | |
780 | drop_packet: | |
781 | adapter->stats.txdropped++; | |
782 | dev_kfree_skb_any(skb); | |
783 | return NETDEV_TX_OK; | |
784 | } | |
785 | ||
7f966452 | 786 | void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) |
c70001a9 SC |
787 | { |
788 | struct net_device *netdev = adapter->netdev; | |
789 | ||
790 | if (adapter->ahw->linkup && !linkup) { | |
791 | netdev_info(netdev, "NIC Link is down\n"); | |
792 | adapter->ahw->linkup = 0; | |
b84caae4 | 793 | netif_carrier_off(netdev); |
c70001a9 | 794 | } else if (!adapter->ahw->linkup && linkup) { |
092dfcf3 SS |
795 | adapter->ahw->linkup = 1; |
796 | ||
797 | /* Do not advertise Link up to the stack if device | |
798 | * is in loopback mode | |
799 | */ | |
800 | if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) { | |
801 | netdev_info(netdev, "NIC Link is up for loopback test\n"); | |
d9c602f0 | 802 | return; |
092dfcf3 | 803 | } |
d9c602f0 | 804 | |
c70001a9 | 805 | netdev_info(netdev, "NIC Link is up\n"); |
b84caae4 | 806 | netif_carrier_on(netdev); |
c70001a9 SC |
807 | } |
808 | } | |
809 | ||
d17dd0d9 SC |
810 | static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter, |
811 | struct qlcnic_host_rds_ring *rds_ring, | |
812 | struct qlcnic_rx_buffer *buffer) | |
c70001a9 SC |
813 | { |
814 | struct sk_buff *skb; | |
815 | dma_addr_t dma; | |
816 | struct pci_dev *pdev = adapter->pdev; | |
817 | ||
818 | skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size); | |
819 | if (!skb) { | |
820 | adapter->stats.skb_alloc_failure++; | |
821 | return -ENOMEM; | |
822 | } | |
823 | ||
824 | skb_reserve(skb, NET_IP_ALIGN); | |
4be41e92 SC |
825 | dma = pci_map_single(pdev, skb->data, |
826 | rds_ring->dma_size, PCI_DMA_FROMDEVICE); | |
c70001a9 SC |
827 | |
828 | if (pci_dma_mapping_error(pdev, dma)) { | |
829 | adapter->stats.rx_dma_map_error++; | |
830 | dev_kfree_skb_any(skb); | |
831 | return -ENOMEM; | |
832 | } | |
833 | ||
834 | buffer->skb = skb; | |
835 | buffer->dma = dma; | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, | |
4be41e92 SC |
841 | struct qlcnic_host_rds_ring *rds_ring, |
842 | u8 ring_id) | |
c70001a9 SC |
843 | { |
844 | struct rcv_desc *pdesc; | |
845 | struct qlcnic_rx_buffer *buffer; | |
846 | int count = 0; | |
4be41e92 | 847 | uint32_t producer, handle; |
c70001a9 SC |
848 | struct list_head *head; |
849 | ||
850 | if (!spin_trylock(&rds_ring->lock)) | |
851 | return; | |
852 | ||
853 | producer = rds_ring->producer; | |
c70001a9 | 854 | head = &rds_ring->free_list; |
d17dd0d9 | 855 | while (!list_empty(head)) { |
c70001a9 SC |
856 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); |
857 | ||
858 | if (!buffer->skb) { | |
859 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
860 | break; | |
861 | } | |
c70001a9 SC |
862 | count++; |
863 | list_del(&buffer->list); | |
864 | ||
865 | /* make a rcv descriptor */ | |
866 | pdesc = &rds_ring->desc_head[producer]; | |
4be41e92 SC |
867 | handle = qlcnic_get_ref_handle(adapter, |
868 | buffer->ref_handle, ring_id); | |
869 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 SC |
870 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
871 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
c70001a9 SC |
872 | producer = get_next_index(producer, rds_ring->num_desc); |
873 | } | |
c70001a9 SC |
874 | if (count) { |
875 | rds_ring->producer = producer; | |
876 | writel((producer - 1) & (rds_ring->num_desc - 1), | |
d17dd0d9 | 877 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
878 | } |
879 | spin_unlock(&rds_ring->lock); | |
880 | } | |
881 | ||
4be41e92 SC |
882 | static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter, |
883 | struct qlcnic_host_tx_ring *tx_ring, | |
884 | int budget) | |
c70001a9 SC |
885 | { |
886 | u32 sw_consumer, hw_consumer; | |
d17dd0d9 | 887 | int i, done, count = 0; |
c70001a9 SC |
888 | struct qlcnic_cmd_buffer *buffer; |
889 | struct pci_dev *pdev = adapter->pdev; | |
890 | struct net_device *netdev = adapter->netdev; | |
891 | struct qlcnic_skb_frag *frag; | |
c70001a9 | 892 | |
a02bdd42 | 893 | if (!spin_trylock(&tx_ring->tx_clean_lock)) |
34e8c406 HM |
894 | return 1; |
895 | ||
c70001a9 SC |
896 | sw_consumer = tx_ring->sw_consumer; |
897 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
898 | ||
899 | while (sw_consumer != hw_consumer) { | |
900 | buffer = &tx_ring->cmd_buf_arr[sw_consumer]; | |
901 | if (buffer->skb) { | |
902 | frag = &buffer->frag_array[0]; | |
903 | pci_unmap_single(pdev, frag->dma, frag->length, | |
904 | PCI_DMA_TODEVICE); | |
905 | frag->dma = 0ULL; | |
906 | for (i = 1; i < buffer->frag_count; i++) { | |
907 | frag++; | |
908 | pci_unmap_page(pdev, frag->dma, frag->length, | |
909 | PCI_DMA_TODEVICE); | |
910 | frag->dma = 0ULL; | |
911 | } | |
f27c75b3 | 912 | tx_ring->tx_stats.xmit_finished++; |
c70001a9 SC |
913 | dev_kfree_skb_any(buffer->skb); |
914 | buffer->skb = NULL; | |
915 | } | |
916 | ||
917 | sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); | |
4be41e92 | 918 | if (++count >= budget) |
c70001a9 SC |
919 | break; |
920 | } | |
921 | ||
a02bdd42 SS |
922 | tx_ring->sw_consumer = sw_consumer; |
923 | ||
c70001a9 | 924 | if (count && netif_running(netdev)) { |
c70001a9 | 925 | smp_mb(); |
012ec812 HM |
926 | if (netif_tx_queue_stopped(tx_ring->txq) && |
927 | netif_carrier_ok(netdev)) { | |
c70001a9 | 928 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
012ec812 | 929 | netif_tx_wake_queue(tx_ring->txq); |
f27c75b3 | 930 | tx_ring->tx_stats.xmit_on++; |
c70001a9 SC |
931 | } |
932 | } | |
933 | adapter->tx_timeo_cnt = 0; | |
934 | } | |
935 | /* | |
936 | * If everything is freed up to consumer then check if the ring is full | |
937 | * If the ring is full then check if more needs to be freed and | |
938 | * schedule the call back again. | |
939 | * | |
940 | * This happens when there are 2 CPUs. One could be freeing and the | |
941 | * other filling it. If the ring is full when we get out of here and | |
942 | * the card has already interrupted the host then the host can miss the | |
943 | * interrupt. | |
944 | * | |
945 | * There is still a possible race condition and the host could miss an | |
946 | * interrupt. The card has to take care of this. | |
947 | */ | |
948 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
949 | done = (sw_consumer == hw_consumer); | |
a02bdd42 SS |
950 | |
951 | spin_unlock(&tx_ring->tx_clean_lock); | |
c70001a9 SC |
952 | |
953 | return done; | |
954 | } | |
955 | ||
956 | static int qlcnic_poll(struct napi_struct *napi, int budget) | |
957 | { | |
4be41e92 | 958 | int tx_complete, work_done; |
d17dd0d9 SC |
959 | struct qlcnic_host_sds_ring *sds_ring; |
960 | struct qlcnic_adapter *adapter; | |
012ec812 | 961 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 962 | |
d17dd0d9 SC |
963 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
964 | adapter = sds_ring->adapter; | |
012ec812 HM |
965 | tx_ring = sds_ring->tx_ring; |
966 | ||
967 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, | |
4be41e92 | 968 | budget); |
c70001a9 | 969 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
c70001a9 SC |
970 | if ((work_done < budget) && tx_complete) { |
971 | napi_complete(&sds_ring->napi); | |
012ec812 | 972 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { |
2cc5752e | 973 | qlcnic_enable_sds_intr(adapter, sds_ring); |
012ec812 HM |
974 | qlcnic_enable_tx_intr(adapter, tx_ring); |
975 | } | |
976 | } | |
977 | ||
978 | return work_done; | |
979 | } | |
980 | ||
981 | static int qlcnic_tx_poll(struct napi_struct *napi, int budget) | |
982 | { | |
983 | struct qlcnic_host_tx_ring *tx_ring; | |
984 | struct qlcnic_adapter *adapter; | |
985 | int work_done; | |
986 | ||
987 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); | |
988 | adapter = tx_ring->adapter; | |
989 | ||
990 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
991 | if (work_done) { | |
992 | napi_complete(&tx_ring->napi); | |
993 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
994 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
c70001a9 SC |
995 | } |
996 | ||
997 | return work_done; | |
998 | } | |
999 | ||
1000 | static int qlcnic_rx_poll(struct napi_struct *napi, int budget) | |
1001 | { | |
d17dd0d9 SC |
1002 | struct qlcnic_host_sds_ring *sds_ring; |
1003 | struct qlcnic_adapter *adapter; | |
c70001a9 SC |
1004 | int work_done; |
1005 | ||
d17dd0d9 SC |
1006 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
1007 | adapter = sds_ring->adapter; | |
1008 | ||
c70001a9 SC |
1009 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
1010 | ||
1011 | if (work_done < budget) { | |
1012 | napi_complete(&sds_ring->napi); | |
1013 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
2cc5752e | 1014 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1015 | } |
1016 | ||
1017 | return work_done; | |
1018 | } | |
1019 | ||
d17dd0d9 SC |
1020 | static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, |
1021 | struct qlcnic_fw_msg *msg) | |
c70001a9 SC |
1022 | { |
1023 | u32 cable_OUI; | |
d17dd0d9 SC |
1024 | u16 cable_len, link_speed; |
1025 | u8 link_status, module, duplex, autoneg, lb_status = 0; | |
c70001a9 SC |
1026 | struct net_device *netdev = adapter->netdev; |
1027 | ||
79788450 | 1028 | adapter->ahw->has_link_events = 1; |
c70001a9 SC |
1029 | |
1030 | cable_OUI = msg->body[1] & 0xffffffff; | |
1031 | cable_len = (msg->body[1] >> 32) & 0xffff; | |
1032 | link_speed = (msg->body[1] >> 48) & 0xffff; | |
1033 | ||
1034 | link_status = msg->body[2] & 0xff; | |
1035 | duplex = (msg->body[2] >> 16) & 0xff; | |
1036 | autoneg = (msg->body[2] >> 24) & 0xff; | |
1037 | lb_status = (msg->body[2] >> 32) & 0x3; | |
1038 | ||
1039 | module = (msg->body[2] >> 8) & 0xff; | |
1040 | if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) | |
d17dd0d9 SC |
1041 | dev_info(&netdev->dev, |
1042 | "unsupported cable: OUI 0x%x, length %d\n", | |
1043 | cable_OUI, cable_len); | |
c70001a9 SC |
1044 | else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) |
1045 | dev_info(&netdev->dev, "unsupported cable length %d\n", | |
d17dd0d9 | 1046 | cable_len); |
c70001a9 SC |
1047 | |
1048 | if (!link_status && (lb_status == QLCNIC_ILB_MODE || | |
1049 | lb_status == QLCNIC_ELB_MODE)) | |
1050 | adapter->ahw->loopback_state |= QLCNIC_LINKEVENT; | |
1051 | ||
1052 | qlcnic_advert_link_change(adapter, link_status); | |
1053 | ||
1054 | if (duplex == LINKEVENT_FULL_DUPLEX) | |
79788450 | 1055 | adapter->ahw->link_duplex = DUPLEX_FULL; |
c70001a9 | 1056 | else |
79788450 | 1057 | adapter->ahw->link_duplex = DUPLEX_HALF; |
c70001a9 | 1058 | |
79788450 SC |
1059 | adapter->ahw->module_type = module; |
1060 | adapter->ahw->link_autoneg = autoneg; | |
c70001a9 SC |
1061 | |
1062 | if (link_status) { | |
79788450 | 1063 | adapter->ahw->link_speed = link_speed; |
c70001a9 | 1064 | } else { |
79788450 SC |
1065 | adapter->ahw->link_speed = SPEED_UNKNOWN; |
1066 | adapter->ahw->link_duplex = DUPLEX_UNKNOWN; | |
c70001a9 SC |
1067 | } |
1068 | } | |
1069 | ||
d17dd0d9 SC |
1070 | static void qlcnic_handle_fw_message(int desc_cnt, int index, |
1071 | struct qlcnic_host_sds_ring *sds_ring) | |
c70001a9 SC |
1072 | { |
1073 | struct qlcnic_fw_msg msg; | |
1074 | struct status_desc *desc; | |
1075 | struct qlcnic_adapter *adapter; | |
1076 | struct device *dev; | |
1077 | int i = 0, opcode, ret; | |
1078 | ||
1079 | while (desc_cnt > 0 && i < 8) { | |
1080 | desc = &sds_ring->desc_head[index]; | |
1081 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]); | |
1082 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]); | |
1083 | ||
1084 | index = get_next_index(index, sds_ring->num_desc); | |
1085 | desc_cnt--; | |
1086 | } | |
1087 | ||
1088 | adapter = sds_ring->adapter; | |
1089 | dev = &adapter->pdev->dev; | |
1090 | opcode = qlcnic_get_nic_msg_opcode(msg.body[0]); | |
1091 | ||
1092 | switch (opcode) { | |
1093 | case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE: | |
1094 | qlcnic_handle_linkevent(adapter, &msg); | |
1095 | break; | |
1096 | case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK: | |
1097 | ret = (u32)(msg.body[1]); | |
1098 | switch (ret) { | |
1099 | case 0: | |
1100 | adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE; | |
1101 | break; | |
1102 | case 1: | |
1103 | dev_info(dev, "loopback already in progress\n"); | |
b9c11984 | 1104 | adapter->ahw->diag_cnt = -EINPROGRESS; |
c70001a9 SC |
1105 | break; |
1106 | case 2: | |
1107 | dev_info(dev, "loopback cable is not connected\n"); | |
b9c11984 | 1108 | adapter->ahw->diag_cnt = -ENODEV; |
c70001a9 SC |
1109 | break; |
1110 | default: | |
d17dd0d9 SC |
1111 | dev_info(dev, |
1112 | "loopback configure request failed, err %x\n", | |
1113 | ret); | |
b9c11984 | 1114 | adapter->ahw->diag_cnt = -EIO; |
c70001a9 SC |
1115 | break; |
1116 | } | |
1117 | break; | |
2d8ebcab | 1118 | case QLCNIC_C2H_OPCODE_GET_DCB_AEN: |
1de899d3 | 1119 | qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg); |
2d8ebcab | 1120 | break; |
c70001a9 SC |
1121 | default: |
1122 | break; | |
1123 | } | |
1124 | } | |
1125 | ||
21041400 | 1126 | static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
1127 | struct qlcnic_host_rds_ring *ring, | |
1128 | u16 index, u16 cksum) | |
c70001a9 SC |
1129 | { |
1130 | struct qlcnic_rx_buffer *buffer; | |
1131 | struct sk_buff *skb; | |
1132 | ||
4be41e92 | 1133 | buffer = &ring->rx_buf_arr[index]; |
c70001a9 SC |
1134 | if (unlikely(buffer->skb == NULL)) { |
1135 | WARN_ON(1); | |
1136 | return NULL; | |
1137 | } | |
1138 | ||
4be41e92 | 1139 | pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size, |
d17dd0d9 | 1140 | PCI_DMA_FROMDEVICE); |
c70001a9 SC |
1141 | |
1142 | skb = buffer->skb; | |
c70001a9 | 1143 | if (likely((adapter->netdev->features & NETIF_F_RXCSUM) && |
d17dd0d9 | 1144 | (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) { |
c70001a9 SC |
1145 | adapter->stats.csummed++; |
1146 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1147 | } else { | |
1148 | skb_checksum_none_assert(skb); | |
1149 | } | |
1150 | ||
4be41e92 | 1151 | |
c70001a9 SC |
1152 | buffer->skb = NULL; |
1153 | ||
1154 | return skb; | |
1155 | } | |
1156 | ||
d17dd0d9 SC |
1157 | static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, |
1158 | struct sk_buff *skb, u16 *vlan_tag) | |
c70001a9 SC |
1159 | { |
1160 | struct ethhdr *eth_hdr; | |
1161 | ||
1162 | if (!__vlan_get_tag(skb, vlan_tag)) { | |
d17dd0d9 | 1163 | eth_hdr = (struct ethhdr *)skb->data; |
c70001a9 SC |
1164 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); |
1165 | skb_pull(skb, VLAN_HLEN); | |
1166 | } | |
91b7282b | 1167 | if (!adapter->rx_pvid) |
c70001a9 SC |
1168 | return 0; |
1169 | ||
91b7282b | 1170 | if (*vlan_tag == adapter->rx_pvid) { |
c70001a9 SC |
1171 | /* Outer vlan tag. Packet should follow non-vlan path */ |
1172 | *vlan_tag = 0xffff; | |
1173 | return 0; | |
1174 | } | |
1175 | if (adapter->flags & QLCNIC_TAGGING_ENABLED) | |
1176 | return 0; | |
1177 | ||
1178 | return -EINVAL; | |
1179 | } | |
1180 | ||
1181 | static struct qlcnic_rx_buffer * | |
1182 | qlcnic_process_rcv(struct qlcnic_adapter *adapter, | |
d17dd0d9 SC |
1183 | struct qlcnic_host_sds_ring *sds_ring, int ring, |
1184 | u64 sts_data0) | |
c70001a9 SC |
1185 | { |
1186 | struct net_device *netdev = adapter->netdev; | |
1187 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1188 | struct qlcnic_rx_buffer *buffer; | |
1189 | struct sk_buff *skb; | |
1190 | struct qlcnic_host_rds_ring *rds_ring; | |
53643a75 SS |
1191 | int index, length, cksum, pkt_offset, is_lb_pkt; |
1192 | u16 vid = 0xffff, t_vid; | |
c70001a9 SC |
1193 | |
1194 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1195 | return NULL; | |
1196 | ||
1197 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1198 | ||
1199 | index = qlcnic_get_sts_refhandle(sts_data0); | |
1200 | if (unlikely(index >= rds_ring->num_desc)) | |
1201 | return NULL; | |
1202 | ||
1203 | buffer = &rds_ring->rx_buf_arr[index]; | |
c70001a9 SC |
1204 | length = qlcnic_get_sts_totallength(sts_data0); |
1205 | cksum = qlcnic_get_sts_status(sts_data0); | |
1206 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
1207 | ||
1208 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1209 | if (!skb) | |
1210 | return buffer; | |
1211 | ||
ddfbac07 | 1212 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1213 | t_vid = 0; |
1214 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1215 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1216 | } |
1217 | ||
c70001a9 SC |
1218 | if (length > rds_ring->skb_size) |
1219 | skb_put(skb, rds_ring->skb_size); | |
1220 | else | |
1221 | skb_put(skb, length); | |
1222 | ||
1223 | if (pkt_offset) | |
1224 | skb_pull(skb, pkt_offset); | |
1225 | ||
1226 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1227 | adapter->stats.rxdropped++; | |
1228 | dev_kfree_skb(skb); | |
1229 | return buffer; | |
1230 | } | |
1231 | ||
1232 | skb->protocol = eth_type_trans(skb, netdev); | |
1233 | ||
1234 | if (vid != 0xffff) | |
86a9bad3 | 1235 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1236 | |
1237 | napi_gro_receive(&sds_ring->napi, skb); | |
1238 | ||
1239 | adapter->stats.rx_pkts++; | |
1240 | adapter->stats.rxbytes += length; | |
1241 | ||
1242 | return buffer; | |
1243 | } | |
1244 | ||
1245 | #define QLC_TCP_HDR_SIZE 20 | |
1246 | #define QLC_TCP_TS_OPTION_SIZE 12 | |
1247 | #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE) | |
1248 | ||
1249 | static struct qlcnic_rx_buffer * | |
1250 | qlcnic_process_lro(struct qlcnic_adapter *adapter, | |
d17dd0d9 | 1251 | int ring, u64 sts_data0, u64 sts_data1) |
c70001a9 SC |
1252 | { |
1253 | struct net_device *netdev = adapter->netdev; | |
1254 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1255 | struct qlcnic_rx_buffer *buffer; | |
1256 | struct sk_buff *skb; | |
1257 | struct qlcnic_host_rds_ring *rds_ring; | |
1258 | struct iphdr *iph; | |
776e7bde | 1259 | struct ipv6hdr *ipv6h; |
c70001a9 SC |
1260 | struct tcphdr *th; |
1261 | bool push, timestamp; | |
53643a75 SS |
1262 | int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt; |
1263 | u16 lro_length, length, data_offset, t_vid, vid = 0xffff; | |
c70001a9 | 1264 | u32 seq_number; |
c70001a9 | 1265 | |
462bed48 | 1266 | if (unlikely(ring >= adapter->max_rds_rings)) |
c70001a9 SC |
1267 | return NULL; |
1268 | ||
1269 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1270 | ||
1271 | index = qlcnic_get_lro_sts_refhandle(sts_data0); | |
462bed48 | 1272 | if (unlikely(index >= rds_ring->num_desc)) |
c70001a9 SC |
1273 | return NULL; |
1274 | ||
1275 | buffer = &rds_ring->rx_buf_arr[index]; | |
1276 | ||
1277 | timestamp = qlcnic_get_lro_sts_timestamp(sts_data0); | |
1278 | lro_length = qlcnic_get_lro_sts_length(sts_data0); | |
1279 | l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0); | |
1280 | l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0); | |
1281 | push = qlcnic_get_lro_sts_push_flag(sts_data0); | |
1282 | seq_number = qlcnic_get_lro_sts_seq_number(sts_data1); | |
1283 | ||
1284 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1285 | if (!skb) | |
1286 | return buffer; | |
1287 | ||
ddfbac07 | 1288 | if (adapter->rx_mac_learn) { |
53643a75 SS |
1289 | t_vid = 0; |
1290 | is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); | |
f80bc8fe | 1291 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid); |
53643a75 SS |
1292 | } |
1293 | ||
c70001a9 SC |
1294 | if (timestamp) |
1295 | data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE; | |
1296 | else | |
1297 | data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE; | |
1298 | ||
1299 | skb_put(skb, lro_length + data_offset); | |
c70001a9 SC |
1300 | skb_pull(skb, l2_hdr_offset); |
1301 | ||
1302 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1303 | adapter->stats.rxdropped++; | |
1304 | dev_kfree_skb(skb); | |
1305 | return buffer; | |
1306 | } | |
1307 | ||
1308 | skb->protocol = eth_type_trans(skb, netdev); | |
776e7bde | 1309 | |
069048f1 | 1310 | if (ntohs(skb->protocol) == ETH_P_IPV6) { |
776e7bde SS |
1311 | ipv6h = (struct ipv6hdr *)skb->data; |
1312 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); | |
1313 | length = (th->doff << 2) + lro_length; | |
1314 | ipv6h->payload_len = htons(length); | |
1315 | } else { | |
1316 | iph = (struct iphdr *)skb->data; | |
1317 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
1318 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; | |
1bcac3b0 | 1319 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
776e7bde | 1320 | iph->tot_len = htons(length); |
776e7bde SS |
1321 | } |
1322 | ||
c70001a9 SC |
1323 | th->psh = push; |
1324 | th->seq = htonl(seq_number); | |
c70001a9 SC |
1325 | length = skb->len; |
1326 | ||
bd69ba79 | 1327 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
c70001a9 | 1328 | skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1); |
bd69ba79 MT |
1329 | if (skb->protocol == htons(ETH_P_IPV6)) |
1330 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; | |
1331 | else | |
1332 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; | |
1333 | } | |
c70001a9 SC |
1334 | |
1335 | if (vid != 0xffff) | |
86a9bad3 | 1336 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
c70001a9 SC |
1337 | netif_receive_skb(skb); |
1338 | ||
1339 | adapter->stats.lro_pkts++; | |
1340 | adapter->stats.lrobytes += length; | |
1341 | ||
1342 | return buffer; | |
1343 | } | |
1344 | ||
21041400 | 1345 | static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) |
c70001a9 | 1346 | { |
d17dd0d9 | 1347 | struct qlcnic_host_rds_ring *rds_ring; |
c70001a9 SC |
1348 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1349 | struct list_head *cur; | |
1350 | struct status_desc *desc; | |
1351 | struct qlcnic_rx_buffer *rxbuf; | |
4be41e92 | 1352 | int opcode, desc_cnt, count = 0; |
c70001a9 | 1353 | u64 sts_data0, sts_data1; |
4be41e92 | 1354 | u8 ring; |
c70001a9 SC |
1355 | u32 consumer = sds_ring->consumer; |
1356 | ||
1357 | while (count < max) { | |
1358 | desc = &sds_ring->desc_head[consumer]; | |
1359 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1360 | ||
1361 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1362 | break; | |
1363 | ||
1364 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1365 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
c70001a9 SC |
1366 | switch (opcode) { |
1367 | case QLCNIC_RXPKT_DESC: | |
1368 | case QLCNIC_OLD_RXPKT_DESC: | |
1369 | case QLCNIC_SYN_OFFLOAD: | |
1370 | ring = qlcnic_get_sts_type(sts_data0); | |
d17dd0d9 SC |
1371 | rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, |
1372 | sts_data0); | |
c70001a9 SC |
1373 | break; |
1374 | case QLCNIC_LRO_DESC: | |
1375 | ring = qlcnic_get_lro_sts_type(sts_data0); | |
1376 | sts_data1 = le64_to_cpu(desc->status_desc_data[1]); | |
1377 | rxbuf = qlcnic_process_lro(adapter, ring, sts_data0, | |
1378 | sts_data1); | |
1379 | break; | |
1380 | case QLCNIC_RESPONSE_DESC: | |
1381 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1382 | default: | |
1383 | goto skip; | |
1384 | } | |
c70001a9 SC |
1385 | WARN_ON(desc_cnt > 1); |
1386 | ||
1387 | if (likely(rxbuf)) | |
1388 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1389 | else | |
1390 | adapter->stats.null_rxbuf++; | |
c70001a9 SC |
1391 | skip: |
1392 | for (; desc_cnt > 0; desc_cnt--) { | |
1393 | desc = &sds_ring->desc_head[consumer]; | |
4be41e92 | 1394 | desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW; |
c70001a9 SC |
1395 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1396 | } | |
1397 | count++; | |
1398 | } | |
1399 | ||
1400 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
d17dd0d9 | 1401 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
c70001a9 SC |
1402 | if (!list_empty(&sds_ring->free_list[ring])) { |
1403 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
d17dd0d9 SC |
1404 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1405 | list); | |
c70001a9 SC |
1406 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); |
1407 | } | |
1408 | spin_lock(&rds_ring->lock); | |
1409 | list_splice_tail_init(&sds_ring->free_list[ring], | |
d17dd0d9 | 1410 | &rds_ring->free_list); |
c70001a9 SC |
1411 | spin_unlock(&rds_ring->lock); |
1412 | } | |
1413 | ||
4be41e92 | 1414 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); |
c70001a9 SC |
1415 | } |
1416 | ||
1417 | if (count) { | |
1418 | sds_ring->consumer = consumer; | |
1419 | writel(consumer, sds_ring->crb_sts_consumer); | |
1420 | } | |
1421 | ||
1422 | return count; | |
1423 | } | |
1424 | ||
d17dd0d9 | 1425 | void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, |
4be41e92 | 1426 | struct qlcnic_host_rds_ring *rds_ring, u8 ring_id) |
c70001a9 SC |
1427 | { |
1428 | struct rcv_desc *pdesc; | |
1429 | struct qlcnic_rx_buffer *buffer; | |
1430 | int count = 0; | |
4be41e92 | 1431 | u32 producer, handle; |
c70001a9 SC |
1432 | struct list_head *head; |
1433 | ||
1434 | producer = rds_ring->producer; | |
c70001a9 | 1435 | head = &rds_ring->free_list; |
d17dd0d9 | 1436 | |
c70001a9 SC |
1437 | while (!list_empty(head)) { |
1438 | ||
1439 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); | |
1440 | ||
1441 | if (!buffer->skb) { | |
1442 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
1443 | break; | |
1444 | } | |
1445 | ||
1446 | count++; | |
1447 | list_del(&buffer->list); | |
1448 | ||
1449 | /* make a rcv descriptor */ | |
1450 | pdesc = &rds_ring->desc_head[producer]; | |
1451 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
4be41e92 SC |
1452 | handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle, |
1453 | ring_id); | |
1454 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 | 1455 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
c70001a9 SC |
1456 | producer = get_next_index(producer, rds_ring->num_desc); |
1457 | } | |
1458 | ||
1459 | if (count) { | |
1460 | rds_ring->producer = producer; | |
1461 | writel((producer-1) & (rds_ring->num_desc-1), | |
d17dd0d9 | 1462 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
1463 | } |
1464 | } | |
1465 | ||
1466 | static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter) | |
1467 | { | |
1468 | int i; | |
1469 | unsigned char *data = skb->data; | |
1470 | ||
d17dd0d9 | 1471 | pr_info(KERN_INFO "\n"); |
c70001a9 SC |
1472 | for (i = 0; i < skb->len; i++) { |
1473 | QLCDB(adapter, DRV, "%02x ", data[i]); | |
1474 | if ((i & 0x0f) == 8) | |
d17dd0d9 | 1475 | pr_info(KERN_INFO "\n"); |
c70001a9 SC |
1476 | } |
1477 | } | |
1478 | ||
1479 | static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring, | |
1480 | u64 sts_data0) | |
1481 | { | |
1482 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1483 | struct sk_buff *skb; | |
1484 | struct qlcnic_host_rds_ring *rds_ring; | |
1485 | int index, length, cksum, pkt_offset; | |
1486 | ||
1487 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1488 | return; | |
1489 | ||
1490 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1491 | ||
1492 | index = qlcnic_get_sts_refhandle(sts_data0); | |
1493 | length = qlcnic_get_sts_totallength(sts_data0); | |
1494 | if (unlikely(index >= rds_ring->num_desc)) | |
1495 | return; | |
1496 | ||
1497 | cksum = qlcnic_get_sts_status(sts_data0); | |
1498 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
1499 | ||
1500 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1501 | if (!skb) | |
1502 | return; | |
1503 | ||
1504 | if (length > rds_ring->skb_size) | |
1505 | skb_put(skb, rds_ring->skb_size); | |
1506 | else | |
1507 | skb_put(skb, length); | |
1508 | ||
1509 | if (pkt_offset) | |
1510 | skb_pull(skb, pkt_offset); | |
1511 | ||
1512 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
79788450 | 1513 | adapter->ahw->diag_cnt++; |
c70001a9 SC |
1514 | else |
1515 | dump_skb(skb, adapter); | |
1516 | ||
1517 | dev_kfree_skb_any(skb); | |
1518 | adapter->stats.rx_pkts++; | |
1519 | adapter->stats.rxbytes += length; | |
1520 | ||
1521 | return; | |
1522 | } | |
1523 | ||
7e2cf4fe | 1524 | void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
c70001a9 SC |
1525 | { |
1526 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1527 | struct status_desc *desc; | |
1528 | u64 sts_data0; | |
1529 | int ring, opcode, desc_cnt; | |
1530 | ||
1531 | u32 consumer = sds_ring->consumer; | |
1532 | ||
1533 | desc = &sds_ring->desc_head[consumer]; | |
1534 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1535 | ||
1536 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1537 | return; | |
1538 | ||
1539 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1540 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
1541 | switch (opcode) { | |
1542 | case QLCNIC_RESPONSE_DESC: | |
1543 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1544 | break; | |
1545 | default: | |
1546 | ring = qlcnic_get_sts_type(sts_data0); | |
1547 | qlcnic_process_rcv_diag(adapter, ring, sts_data0); | |
1548 | break; | |
1549 | } | |
1550 | ||
1551 | for (; desc_cnt > 0; desc_cnt--) { | |
1552 | desc = &sds_ring->desc_head[consumer]; | |
1553 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
1554 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1555 | } | |
1556 | ||
1557 | sds_ring->consumer = consumer; | |
1558 | writel(consumer, sds_ring->crb_sts_consumer); | |
1559 | } | |
1560 | ||
7e2cf4fe SC |
1561 | int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
1562 | struct net_device *netdev) | |
c70001a9 | 1563 | { |
df95fc44 | 1564 | int ring; |
c70001a9 SC |
1565 | struct qlcnic_host_sds_ring *sds_ring; |
1566 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1567 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1568 | |
34e8c406 | 1569 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
c70001a9 SC |
1570 | return -ENOMEM; |
1571 | ||
34e8c406 | 1572 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1573 | sds_ring = &recv_ctx->sds_rings[ring]; |
012ec812 | 1574 | if (qlcnic_check_multi_tx(adapter) && |
80c0e4f3 | 1575 | !adapter->ahw->diag_test) { |
d17dd0d9 | 1576 | netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll, |
df95fc44 | 1577 | NAPI_POLL_WEIGHT); |
012ec812 | 1578 | } else { |
34e8c406 | 1579 | if (ring == (adapter->drv_sds_rings - 1)) |
012ec812 HM |
1580 | netif_napi_add(netdev, &sds_ring->napi, |
1581 | qlcnic_poll, | |
df95fc44 | 1582 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1583 | else |
1584 | netif_napi_add(netdev, &sds_ring->napi, | |
1585 | qlcnic_rx_poll, | |
df95fc44 | 1586 | NAPI_POLL_WEIGHT); |
012ec812 | 1587 | } |
c70001a9 SC |
1588 | } |
1589 | ||
4be41e92 SC |
1590 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
1591 | qlcnic_free_sds_rings(recv_ctx); | |
1592 | return -ENOMEM; | |
1593 | } | |
1594 | ||
c2c5e3a0 | 1595 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1596 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1597 | tx_ring = &adapter->tx_ring[ring]; |
1598 | netif_napi_add(netdev, &tx_ring->napi, qlcnic_tx_poll, | |
df95fc44 | 1599 | NAPI_POLL_WEIGHT); |
012ec812 HM |
1600 | } |
1601 | } | |
1602 | ||
c70001a9 SC |
1603 | return 0; |
1604 | } | |
1605 | ||
4be41e92 | 1606 | void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1607 | { |
1608 | int ring; | |
1609 | struct qlcnic_host_sds_ring *sds_ring; | |
1610 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
012ec812 | 1611 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 | 1612 | |
34e8c406 | 1613 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1614 | sds_ring = &recv_ctx->sds_rings[ring]; |
1615 | netif_napi_del(&sds_ring->napi); | |
1616 | } | |
1617 | ||
1618 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
012ec812 | 1619 | |
c2c5e3a0 | 1620 | if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { |
34e8c406 | 1621 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1622 | tx_ring = &adapter->tx_ring[ring]; |
1623 | netif_napi_del(&tx_ring->napi); | |
1624 | } | |
1625 | } | |
1626 | ||
4be41e92 | 1627 | qlcnic_free_tx_rings(adapter); |
c70001a9 SC |
1628 | } |
1629 | ||
7e2cf4fe | 1630 | void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1631 | { |
1632 | int ring; | |
1633 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1634 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1635 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1636 | ||
1637 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1638 | return; | |
1639 | ||
34e8c406 | 1640 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 SC |
1641 | sds_ring = &recv_ctx->sds_rings[ring]; |
1642 | napi_enable(&sds_ring->napi); | |
2cc5752e | 1643 | qlcnic_enable_sds_intr(adapter, sds_ring); |
c70001a9 | 1644 | } |
012ec812 HM |
1645 | |
1646 | if (qlcnic_check_multi_tx(adapter) && | |
1647 | (adapter->flags & QLCNIC_MSIX_ENABLED) && | |
80c0e4f3 | 1648 | !adapter->ahw->diag_test) { |
34e8c406 | 1649 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 HM |
1650 | tx_ring = &adapter->tx_ring[ring]; |
1651 | napi_enable(&tx_ring->napi); | |
1652 | qlcnic_enable_tx_intr(adapter, tx_ring); | |
1653 | } | |
1654 | } | |
c70001a9 SC |
1655 | } |
1656 | ||
7e2cf4fe | 1657 | void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1658 | { |
1659 | int ring; | |
1660 | struct qlcnic_host_sds_ring *sds_ring; | |
012ec812 | 1661 | struct qlcnic_host_tx_ring *tx_ring; |
c70001a9 SC |
1662 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
1663 | ||
1664 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1665 | return; | |
1666 | ||
34e8c406 | 1667 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
c70001a9 | 1668 | sds_ring = &recv_ctx->sds_rings[ring]; |
2cc5752e | 1669 | qlcnic_disable_sds_intr(adapter, sds_ring); |
c70001a9 SC |
1670 | napi_synchronize(&sds_ring->napi); |
1671 | napi_disable(&sds_ring->napi); | |
1672 | } | |
012ec812 HM |
1673 | |
1674 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && | |
c2c5e3a0 | 1675 | !adapter->ahw->diag_test && |
012ec812 | 1676 | qlcnic_check_multi_tx(adapter)) { |
34e8c406 | 1677 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
012ec812 | 1678 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 1679 | qlcnic_disable_tx_intr(adapter, tx_ring); |
012ec812 HM |
1680 | napi_synchronize(&tx_ring->napi); |
1681 | napi_disable(&tx_ring->napi); | |
1682 | } | |
1683 | } | |
c70001a9 | 1684 | } |
4be41e92 | 1685 | |
53643a75 SS |
1686 | #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36) |
1687 | #define QLC_83XX_LRO_LB_PKT (1ULL << 46) | |
1688 | ||
1689 | static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt) | |
1690 | { | |
1691 | if (lro_pkt) | |
1692 | return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0; | |
1693 | else | |
1694 | return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0; | |
1695 | } | |
1696 | ||
2b3d7b75 SS |
1697 | #define QLCNIC_ENCAP_LENGTH_MASK 0x7f |
1698 | ||
1699 | static inline u8 qlcnic_encap_length(u64 sts_data) | |
1700 | { | |
1701 | return sts_data & QLCNIC_ENCAP_LENGTH_MASK; | |
1702 | } | |
1703 | ||
4be41e92 SC |
1704 | static struct qlcnic_rx_buffer * |
1705 | qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter, | |
1706 | struct qlcnic_host_sds_ring *sds_ring, | |
1707 | u8 ring, u64 sts_data[]) | |
1708 | { | |
1709 | struct net_device *netdev = adapter->netdev; | |
1710 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1711 | struct qlcnic_rx_buffer *buffer; | |
1712 | struct sk_buff *skb; | |
1713 | struct qlcnic_host_rds_ring *rds_ring; | |
53643a75 | 1714 | int index, length, cksum, is_lb_pkt; |
b3f7de83 SC |
1715 | u16 vid = 0xffff; |
1716 | int err; | |
4be41e92 SC |
1717 | |
1718 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1719 | return NULL; | |
1720 | ||
1721 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1722 | ||
1723 | index = qlcnic_83xx_hndl(sts_data[0]); | |
1724 | if (unlikely(index >= rds_ring->num_desc)) | |
1725 | return NULL; | |
1726 | ||
1727 | buffer = &rds_ring->rx_buf_arr[index]; | |
1728 | length = qlcnic_83xx_pktln(sts_data[0]); | |
1729 | cksum = qlcnic_83xx_csum_status(sts_data[1]); | |
1730 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1731 | if (!skb) | |
1732 | return buffer; | |
1733 | ||
1734 | if (length > rds_ring->skb_size) | |
1735 | skb_put(skb, rds_ring->skb_size); | |
1736 | else | |
1737 | skb_put(skb, length); | |
1738 | ||
b3f7de83 SC |
1739 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1740 | ||
1741 | if (adapter->rx_mac_learn) { | |
1742 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0); | |
1743 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1744 | } | |
1745 | ||
1746 | if (unlikely(err)) { | |
4be41e92 SC |
1747 | adapter->stats.rxdropped++; |
1748 | dev_kfree_skb(skb); | |
1749 | return buffer; | |
1750 | } | |
1751 | ||
1752 | skb->protocol = eth_type_trans(skb, netdev); | |
1753 | ||
2b3d7b75 SS |
1754 | if (qlcnic_encap_length(sts_data[1]) && |
1755 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
1756 | skb->encapsulation = 1; | |
1757 | adapter->stats.encap_rx_csummed++; | |
1758 | } | |
1759 | ||
4be41e92 | 1760 | if (vid != 0xffff) |
86a9bad3 | 1761 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
1762 | |
1763 | napi_gro_receive(&sds_ring->napi, skb); | |
1764 | ||
1765 | adapter->stats.rx_pkts++; | |
1766 | adapter->stats.rxbytes += length; | |
1767 | ||
1768 | return buffer; | |
1769 | } | |
1770 | ||
1771 | static struct qlcnic_rx_buffer * | |
1772 | qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, | |
1773 | u8 ring, u64 sts_data[]) | |
1774 | { | |
1775 | struct net_device *netdev = adapter->netdev; | |
1776 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1777 | struct qlcnic_rx_buffer *buffer; | |
1778 | struct sk_buff *skb; | |
1779 | struct qlcnic_host_rds_ring *rds_ring; | |
1780 | struct iphdr *iph; | |
1781 | struct ipv6hdr *ipv6h; | |
1782 | struct tcphdr *th; | |
1783 | bool push; | |
1784 | int l2_hdr_offset, l4_hdr_offset; | |
53643a75 | 1785 | int index, is_lb_pkt; |
99e85879 | 1786 | u16 lro_length, length, data_offset, gso_size; |
b3f7de83 SC |
1787 | u16 vid = 0xffff; |
1788 | int err; | |
4be41e92 | 1789 | |
462bed48 | 1790 | if (unlikely(ring >= adapter->max_rds_rings)) |
4be41e92 SC |
1791 | return NULL; |
1792 | ||
1793 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1794 | ||
1795 | index = qlcnic_83xx_hndl(sts_data[0]); | |
462bed48 | 1796 | if (unlikely(index >= rds_ring->num_desc)) |
4be41e92 SC |
1797 | return NULL; |
1798 | ||
1799 | buffer = &rds_ring->rx_buf_arr[index]; | |
1800 | ||
1801 | lro_length = qlcnic_83xx_lro_pktln(sts_data[0]); | |
1802 | l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]); | |
1803 | l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]); | |
1804 | push = qlcnic_83xx_is_psh_bit(sts_data[1]); | |
1805 | ||
1806 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1807 | if (!skb) | |
1808 | return buffer; | |
53643a75 | 1809 | |
4be41e92 SC |
1810 | if (qlcnic_83xx_is_tstamp(sts_data[1])) |
1811 | data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE; | |
1812 | else | |
1813 | data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE; | |
1814 | ||
1815 | skb_put(skb, lro_length + data_offset); | |
1816 | skb_pull(skb, l2_hdr_offset); | |
1817 | ||
b3f7de83 SC |
1818 | err = qlcnic_check_rx_tagging(adapter, skb, &vid); |
1819 | ||
1820 | if (adapter->rx_mac_learn) { | |
1821 | is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1); | |
1822 | qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); | |
1823 | } | |
1824 | ||
1825 | if (unlikely(err)) { | |
4be41e92 SC |
1826 | adapter->stats.rxdropped++; |
1827 | dev_kfree_skb(skb); | |
1828 | return buffer; | |
1829 | } | |
1830 | ||
1831 | skb->protocol = eth_type_trans(skb, netdev); | |
1832 | if (ntohs(skb->protocol) == ETH_P_IPV6) { | |
1833 | ipv6h = (struct ipv6hdr *)skb->data; | |
1834 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); | |
1835 | ||
1836 | length = (th->doff << 2) + lro_length; | |
1837 | ipv6h->payload_len = htons(length); | |
1838 | } else { | |
1839 | iph = (struct iphdr *)skb->data; | |
1840 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
1841 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; | |
1bcac3b0 | 1842 | csum_replace2(&iph->check, iph->tot_len, htons(length)); |
4be41e92 | 1843 | iph->tot_len = htons(length); |
4be41e92 SC |
1844 | } |
1845 | ||
1846 | th->psh = push; | |
1847 | length = skb->len; | |
1848 | ||
99e85879 SS |
1849 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
1850 | gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]); | |
1851 | skb_shinfo(skb)->gso_size = gso_size; | |
1852 | if (skb->protocol == htons(ETH_P_IPV6)) | |
1853 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; | |
1854 | else | |
1855 | skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; | |
1856 | } | |
1857 | ||
4be41e92 | 1858 | if (vid != 0xffff) |
86a9bad3 | 1859 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
4be41e92 SC |
1860 | |
1861 | netif_receive_skb(skb); | |
1862 | ||
1863 | adapter->stats.lro_pkts++; | |
1864 | adapter->stats.lrobytes += length; | |
1865 | return buffer; | |
1866 | } | |
1867 | ||
1868 | static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, | |
1869 | int max) | |
1870 | { | |
1871 | struct qlcnic_host_rds_ring *rds_ring; | |
1872 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1873 | struct list_head *cur; | |
1874 | struct status_desc *desc; | |
1875 | struct qlcnic_rx_buffer *rxbuf = NULL; | |
1876 | u8 ring; | |
1877 | u64 sts_data[2]; | |
1878 | int count = 0, opcode; | |
1879 | u32 consumer = sds_ring->consumer; | |
1880 | ||
1881 | while (count < max) { | |
1882 | desc = &sds_ring->desc_head[consumer]; | |
1883 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
1884 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
1885 | if (!opcode) | |
1886 | break; | |
1887 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
1888 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); | |
1889 | ||
1890 | switch (opcode) { | |
1891 | case QLC_83XX_REG_DESC: | |
1892 | rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring, | |
1893 | ring, sts_data); | |
1894 | break; | |
1895 | case QLC_83XX_LRO_DESC: | |
1896 | rxbuf = qlcnic_83xx_process_lro(adapter, ring, | |
1897 | sts_data); | |
1898 | break; | |
1899 | default: | |
1900 | dev_info(&adapter->pdev->dev, | |
0b1587b1 | 1901 | "Unknown opcode: 0x%x\n", opcode); |
4be41e92 SC |
1902 | goto skip; |
1903 | } | |
1904 | ||
1905 | if (likely(rxbuf)) | |
1906 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1907 | else | |
1908 | adapter->stats.null_rxbuf++; | |
1909 | skip: | |
1910 | desc = &sds_ring->desc_head[consumer]; | |
1911 | /* Reset the descriptor */ | |
1912 | desc->status_desc_data[1] = 0; | |
1913 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1914 | count++; | |
1915 | } | |
1916 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
1917 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; | |
1918 | if (!list_empty(&sds_ring->free_list[ring])) { | |
1919 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
1920 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, | |
1921 | list); | |
1922 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); | |
1923 | } | |
1924 | spin_lock(&rds_ring->lock); | |
1925 | list_splice_tail_init(&sds_ring->free_list[ring], | |
1926 | &rds_ring->free_list); | |
1927 | spin_unlock(&rds_ring->lock); | |
1928 | } | |
1929 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); | |
1930 | } | |
1931 | if (count) { | |
1932 | sds_ring->consumer = consumer; | |
1933 | writel(consumer, sds_ring->crb_sts_consumer); | |
1934 | } | |
1935 | return count; | |
1936 | } | |
1937 | ||
da6c8063 RB |
1938 | static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget) |
1939 | { | |
1940 | int tx_complete; | |
1941 | int work_done; | |
1942 | struct qlcnic_host_sds_ring *sds_ring; | |
1943 | struct qlcnic_adapter *adapter; | |
1944 | struct qlcnic_host_tx_ring *tx_ring; | |
1945 | ||
1946 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1947 | adapter = sds_ring->adapter; | |
1948 | /* tx ring count = 1 */ | |
1949 | tx_ring = adapter->tx_ring; | |
1950 | ||
1951 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
1952 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
1953 | if ((work_done < budget) && tx_complete) { | |
1954 | napi_complete(&sds_ring->napi); | |
2cc5752e | 1955 | qlcnic_enable_sds_intr(adapter, sds_ring); |
da6c8063 RB |
1956 | } |
1957 | ||
1958 | return work_done; | |
1959 | } | |
1960 | ||
4be41e92 SC |
1961 | static int qlcnic_83xx_poll(struct napi_struct *napi, int budget) |
1962 | { | |
1963 | int tx_complete; | |
1964 | int work_done; | |
1965 | struct qlcnic_host_sds_ring *sds_ring; | |
1966 | struct qlcnic_adapter *adapter; | |
1967 | struct qlcnic_host_tx_ring *tx_ring; | |
1968 | ||
1969 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1970 | adapter = sds_ring->adapter; | |
1971 | /* tx ring count = 1 */ | |
1972 | tx_ring = adapter->tx_ring; | |
1973 | ||
4be41e92 SC |
1974 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
1975 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
1976 | if ((work_done < budget) && tx_complete) { | |
1977 | napi_complete(&sds_ring->napi); | |
2cc5752e | 1978 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
1979 | } |
1980 | ||
1981 | return work_done; | |
1982 | } | |
1983 | ||
1984 | static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget) | |
1985 | { | |
1986 | int work_done; | |
1987 | struct qlcnic_host_tx_ring *tx_ring; | |
1988 | struct qlcnic_adapter *adapter; | |
1989 | ||
1990 | budget = QLCNIC_TX_POLL_BUDGET; | |
1991 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); | |
1992 | adapter = tx_ring->adapter; | |
1993 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
1994 | if (work_done) { | |
1995 | napi_complete(&tx_ring->napi); | |
1996 | if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) | |
2cc5752e | 1997 | qlcnic_enable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
1998 | } |
1999 | ||
2000 | return work_done; | |
2001 | } | |
2002 | ||
2003 | static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget) | |
2004 | { | |
2005 | int work_done; | |
2006 | struct qlcnic_host_sds_ring *sds_ring; | |
2007 | struct qlcnic_adapter *adapter; | |
2008 | ||
2009 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
2010 | adapter = sds_ring->adapter; | |
2011 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
2012 | if (work_done < budget) { | |
2013 | napi_complete(&sds_ring->napi); | |
2014 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
2cc5752e | 2015 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2016 | } |
2017 | ||
2018 | return work_done; | |
2019 | } | |
2020 | ||
2021 | void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter) | |
2022 | { | |
2023 | int ring; | |
2024 | struct qlcnic_host_sds_ring *sds_ring; | |
2025 | struct qlcnic_host_tx_ring *tx_ring; | |
2026 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2027 | ||
2028 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
2029 | return; | |
2030 | ||
34e8c406 | 2031 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2032 | sds_ring = &recv_ctx->sds_rings[ring]; |
2033 | napi_enable(&sds_ring->napi); | |
ac166700 | 2034 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2035 | qlcnic_enable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2036 | } |
2037 | ||
da6c8063 RB |
2038 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2039 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2040 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2041 | tx_ring = &adapter->tx_ring[ring]; |
2042 | napi_enable(&tx_ring->napi); | |
2cc5752e | 2043 | qlcnic_enable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
2044 | } |
2045 | } | |
2046 | } | |
2047 | ||
2048 | void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter) | |
2049 | { | |
2050 | int ring; | |
2051 | struct qlcnic_host_sds_ring *sds_ring; | |
2052 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2053 | struct qlcnic_host_tx_ring *tx_ring; | |
2054 | ||
2055 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
2056 | return; | |
2057 | ||
34e8c406 | 2058 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2059 | sds_ring = &recv_ctx->sds_rings[ring]; |
ac166700 | 2060 | if (adapter->flags & QLCNIC_MSIX_ENABLED) |
2cc5752e | 2061 | qlcnic_disable_sds_intr(adapter, sds_ring); |
4be41e92 SC |
2062 | napi_synchronize(&sds_ring->napi); |
2063 | napi_disable(&sds_ring->napi); | |
2064 | } | |
2065 | ||
da6c8063 RB |
2066 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2067 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2068 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 | 2069 | tx_ring = &adapter->tx_ring[ring]; |
2cc5752e | 2070 | qlcnic_disable_tx_intr(adapter, tx_ring); |
4be41e92 SC |
2071 | napi_synchronize(&tx_ring->napi); |
2072 | napi_disable(&tx_ring->napi); | |
2073 | } | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, | |
2078 | struct net_device *netdev) | |
2079 | { | |
df95fc44 | 2080 | int ring; |
4be41e92 SC |
2081 | struct qlcnic_host_sds_ring *sds_ring; |
2082 | struct qlcnic_host_tx_ring *tx_ring; | |
2083 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2084 | ||
34e8c406 | 2085 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) |
4be41e92 SC |
2086 | return -ENOMEM; |
2087 | ||
34e8c406 | 2088 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 | 2089 | sds_ring = &recv_ctx->sds_rings[ring]; |
da6c8063 | 2090 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
df95fc44 | 2091 | if (!(adapter->flags & QLCNIC_TX_INTR_SHARED)) |
da6c8063 RB |
2092 | netif_napi_add(netdev, &sds_ring->napi, |
2093 | qlcnic_83xx_rx_poll, | |
df95fc44 MS |
2094 | NAPI_POLL_WEIGHT); |
2095 | else | |
da6c8063 RB |
2096 | netif_napi_add(netdev, &sds_ring->napi, |
2097 | qlcnic_83xx_msix_sriov_vf_poll, | |
df95fc44 | 2098 | NAPI_POLL_WEIGHT); |
da6c8063 RB |
2099 | |
2100 | } else { | |
4be41e92 SC |
2101 | netif_napi_add(netdev, &sds_ring->napi, |
2102 | qlcnic_83xx_poll, | |
df95fc44 | 2103 | NAPI_POLL_WEIGHT); |
da6c8063 | 2104 | } |
4be41e92 SC |
2105 | } |
2106 | ||
2107 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { | |
2108 | qlcnic_free_sds_rings(recv_ctx); | |
2109 | return -ENOMEM; | |
2110 | } | |
2111 | ||
da6c8063 RB |
2112 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2113 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2114 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2115 | tx_ring = &adapter->tx_ring[ring]; |
2116 | netif_napi_add(netdev, &tx_ring->napi, | |
2117 | qlcnic_83xx_msix_tx_poll, | |
df95fc44 | 2118 | NAPI_POLL_WEIGHT); |
4be41e92 SC |
2119 | } |
2120 | } | |
2121 | ||
2122 | return 0; | |
2123 | } | |
2124 | ||
2125 | void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) | |
2126 | { | |
2127 | int ring; | |
2128 | struct qlcnic_host_sds_ring *sds_ring; | |
2129 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2130 | struct qlcnic_host_tx_ring *tx_ring; | |
2131 | ||
34e8c406 | 2132 | for (ring = 0; ring < adapter->drv_sds_rings; ring++) { |
4be41e92 SC |
2133 | sds_ring = &recv_ctx->sds_rings[ring]; |
2134 | netif_napi_del(&sds_ring->napi); | |
2135 | } | |
2136 | ||
2137 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
2138 | ||
da6c8063 RB |
2139 | if ((adapter->flags & QLCNIC_MSIX_ENABLED) && |
2140 | !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { | |
34e8c406 | 2141 | for (ring = 0; ring < adapter->drv_tx_rings; ring++) { |
4be41e92 SC |
2142 | tx_ring = &adapter->tx_ring[ring]; |
2143 | netif_napi_del(&tx_ring->napi); | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | qlcnic_free_tx_rings(adapter); | |
2148 | } | |
2149 | ||
21041400 | 2150 | static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, |
2151 | int ring, u64 sts_data[]) | |
4be41e92 SC |
2152 | { |
2153 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
2154 | struct sk_buff *skb; | |
2155 | struct qlcnic_host_rds_ring *rds_ring; | |
2156 | int index, length; | |
2157 | ||
2158 | if (unlikely(ring >= adapter->max_rds_rings)) | |
2159 | return; | |
2160 | ||
2161 | rds_ring = &recv_ctx->rds_rings[ring]; | |
2162 | index = qlcnic_83xx_hndl(sts_data[0]); | |
2163 | if (unlikely(index >= rds_ring->num_desc)) | |
2164 | return; | |
2165 | ||
2166 | length = qlcnic_83xx_pktln(sts_data[0]); | |
2167 | ||
2168 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
2169 | if (!skb) | |
2170 | return; | |
2171 | ||
2172 | if (length > rds_ring->skb_size) | |
2173 | skb_put(skb, rds_ring->skb_size); | |
2174 | else | |
2175 | skb_put(skb, length); | |
2176 | ||
2177 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
2178 | adapter->ahw->diag_cnt++; | |
2179 | else | |
2180 | dump_skb(skb, adapter); | |
2181 | ||
2182 | dev_kfree_skb_any(skb); | |
2183 | return; | |
2184 | } | |
2185 | ||
2186 | void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) | |
2187 | { | |
2188 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
2189 | struct status_desc *desc; | |
2190 | u64 sts_data[2]; | |
2191 | int ring, opcode; | |
2192 | u32 consumer = sds_ring->consumer; | |
2193 | ||
2194 | desc = &sds_ring->desc_head[consumer]; | |
2195 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
2196 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
2197 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
2198 | if (!opcode) | |
2199 | return; | |
2200 | ||
2201 | ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0])); | |
2202 | qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); | |
2203 | desc = &sds_ring->desc_head[consumer]; | |
2204 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
2205 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
2206 | sds_ring->consumer = consumer; | |
2207 | writel(consumer, sds_ring->crb_sts_consumer); | |
2208 | } |