Commit | Line | Data |
---|---|---|
c70001a9 SC |
1 | #include <linux/netdevice.h> |
2 | #include <linux/if_vlan.h> | |
3 | #include <net/ip.h> | |
4 | #include <linux/ipv6.h> | |
5 | ||
6 | #include "qlcnic.h" | |
7 | ||
c70001a9 SC |
8 | #define TX_ETHER_PKT 0x01 |
9 | #define TX_TCP_PKT 0x02 | |
10 | #define TX_UDP_PKT 0x03 | |
11 | #define TX_IP_PKT 0x04 | |
12 | #define TX_TCP_LSO 0x05 | |
13 | #define TX_TCP_LSO6 0x06 | |
14 | #define TX_TCPV6_PKT 0x0b | |
15 | #define TX_UDPV6_PKT 0x0c | |
16 | #define FLAGS_VLAN_TAGGED 0x10 | |
17 | #define FLAGS_VLAN_OOB 0x40 | |
18 | ||
19 | #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \ | |
20 | (cmd_desc)->vlan_TCI = cpu_to_le16(v); | |
21 | #define qlcnic_set_cmd_desc_port(cmd_desc, var) \ | |
22 | ((cmd_desc)->port_ctxid |= ((var) & 0x0F)) | |
23 | #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \ | |
24 | ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0)) | |
25 | ||
26 | #define qlcnic_set_tx_port(_desc, _port) \ | |
27 | ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0)) | |
28 | ||
29 | #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \ | |
30 | ((_desc)->flags_opcode |= \ | |
31 | cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7))) | |
32 | ||
33 | #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \ | |
34 | ((_desc)->nfrags__length = \ | |
35 | cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8))) | |
36 | ||
37 | /* owner bits of status_desc */ | |
38 | #define STATUS_OWNER_HOST (0x1ULL << 56) | |
39 | #define STATUS_OWNER_PHANTOM (0x2ULL << 56) | |
40 | ||
41 | /* Status descriptor: | |
42 | 0-3 port, 4-7 status, 8-11 type, 12-27 total_length | |
43 | 28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset | |
44 | 53-55 desc_cnt, 56-57 owner, 58-63 opcode | |
45 | */ | |
46 | #define qlcnic_get_sts_port(sts_data) \ | |
47 | ((sts_data) & 0x0F) | |
48 | #define qlcnic_get_sts_status(sts_data) \ | |
49 | (((sts_data) >> 4) & 0x0F) | |
50 | #define qlcnic_get_sts_type(sts_data) \ | |
51 | (((sts_data) >> 8) & 0x0F) | |
52 | #define qlcnic_get_sts_totallength(sts_data) \ | |
53 | (((sts_data) >> 12) & 0xFFFF) | |
54 | #define qlcnic_get_sts_refhandle(sts_data) \ | |
55 | (((sts_data) >> 28) & 0xFFFF) | |
56 | #define qlcnic_get_sts_prot(sts_data) \ | |
57 | (((sts_data) >> 44) & 0x0F) | |
58 | #define qlcnic_get_sts_pkt_offset(sts_data) \ | |
59 | (((sts_data) >> 48) & 0x1F) | |
60 | #define qlcnic_get_sts_desc_cnt(sts_data) \ | |
61 | (((sts_data) >> 53) & 0x7) | |
62 | #define qlcnic_get_sts_opcode(sts_data) \ | |
63 | (((sts_data) >> 58) & 0x03F) | |
64 | ||
65 | #define qlcnic_get_lro_sts_refhandle(sts_data) \ | |
5796bd04 | 66 | ((sts_data) & 0x07FFF) |
c70001a9 SC |
67 | #define qlcnic_get_lro_sts_length(sts_data) \ |
68 | (((sts_data) >> 16) & 0x0FFFF) | |
69 | #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \ | |
70 | (((sts_data) >> 32) & 0x0FF) | |
71 | #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \ | |
72 | (((sts_data) >> 40) & 0x0FF) | |
73 | #define qlcnic_get_lro_sts_timestamp(sts_data) \ | |
74 | (((sts_data) >> 48) & 0x1) | |
75 | #define qlcnic_get_lro_sts_type(sts_data) \ | |
76 | (((sts_data) >> 49) & 0x7) | |
77 | #define qlcnic_get_lro_sts_push_flag(sts_data) \ | |
78 | (((sts_data) >> 52) & 0x1) | |
79 | #define qlcnic_get_lro_sts_seq_number(sts_data) \ | |
80 | ((sts_data) & 0x0FFFFFFFF) | |
81 | #define qlcnic_get_lro_sts_mss(sts_data1) \ | |
82 | ((sts_data1 >> 32) & 0x0FFFF) | |
83 | ||
84 | /* opcode field in status_desc */ | |
85 | #define QLCNIC_SYN_OFFLOAD 0x03 | |
86 | #define QLCNIC_RXPKT_DESC 0x04 | |
87 | #define QLCNIC_OLD_RXPKT_DESC 0x3f | |
88 | #define QLCNIC_RESPONSE_DESC 0x05 | |
89 | #define QLCNIC_LRO_DESC 0x12 | |
90 | ||
4be41e92 SC |
91 | #define QLCNIC_TX_POLL_BUDGET 128 |
92 | #define QLCNIC_TCP_HDR_SIZE 20 | |
93 | #define QLCNIC_TCP_TS_OPTION_SIZE 12 | |
94 | #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63) | |
95 | #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM) | |
96 | ||
97 | #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE) | |
98 | ||
c70001a9 SC |
99 | /* for status field in status_desc */ |
100 | #define STATUS_CKSUM_LOOP 0 | |
101 | #define STATUS_CKSUM_OK 2 | |
d17dd0d9 | 102 | |
4be41e92 SC |
103 | #define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF) |
104 | #define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF) | |
105 | #define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7) | |
106 | #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF) | |
107 | #define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF) | |
108 | #define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF) | |
109 | #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF) | |
110 | #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF) | |
111 | #define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7) | |
112 | #define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1) | |
113 | #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1) | |
114 | #define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1) | |
115 | #define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1) | |
116 | ||
117 | struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *, | |
118 | struct qlcnic_host_rds_ring *, u16, u16); | |
119 | ||
120 | inline void qlcnic_83xx_enable_tx_intr(struct qlcnic_adapter *adapter, | |
121 | struct qlcnic_host_tx_ring *tx_ring) | |
122 | { | |
123 | writel(0, tx_ring->crb_intr_mask); | |
124 | } | |
125 | ||
126 | inline void qlcnic_83xx_disable_tx_intr(struct qlcnic_adapter *adapter, | |
127 | struct qlcnic_host_tx_ring *tx_ring) | |
128 | { | |
129 | writel(1, tx_ring->crb_intr_mask); | |
130 | } | |
131 | ||
132 | static inline u8 qlcnic_mac_hash(u64 mac) | |
133 | { | |
134 | return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff)); | |
135 | } | |
136 | ||
137 | static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, | |
138 | u16 handle, u8 ring_id) | |
139 | { | |
140 | if (adapter->pdev->device == PCI_DEVICE_ID_QLOGIC_QLE834X) | |
141 | return handle | (ring_id << 15); | |
142 | else | |
143 | return handle; | |
144 | } | |
145 | ||
7e2cf4fe SC |
146 | void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, |
147 | __le16 vlan_id) | |
c70001a9 SC |
148 | { |
149 | struct cmd_desc_type0 *hwdesc; | |
150 | struct qlcnic_nic_req *req; | |
151 | struct qlcnic_mac_req *mac_req; | |
152 | struct qlcnic_vlan_req *vlan_req; | |
7e2cf4fe | 153 | struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; |
c70001a9 SC |
154 | u32 producer; |
155 | u64 word; | |
156 | ||
157 | producer = tx_ring->producer; | |
158 | hwdesc = &tx_ring->desc_head[tx_ring->producer]; | |
159 | ||
160 | req = (struct qlcnic_nic_req *)hwdesc; | |
161 | memset(req, 0, sizeof(struct qlcnic_nic_req)); | |
162 | req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23); | |
163 | ||
164 | word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16); | |
165 | req->req_hdr = cpu_to_le64(word); | |
166 | ||
167 | mac_req = (struct qlcnic_mac_req *)&(req->words[0]); | |
168 | mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; | |
169 | memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN); | |
170 | ||
171 | vlan_req = (struct qlcnic_vlan_req *)&req->words[1]; | |
172 | vlan_req->vlan_id = vlan_id; | |
173 | ||
174 | tx_ring->producer = get_next_index(producer, tx_ring->num_desc); | |
175 | smp_mb(); | |
176 | } | |
177 | ||
d17dd0d9 | 178 | static void qlcnic_send_filter(struct qlcnic_adapter *adapter, |
d17dd0d9 SC |
179 | struct cmd_desc_type0 *first_desc, |
180 | struct sk_buff *skb) | |
c70001a9 | 181 | { |
c70001a9 SC |
182 | struct qlcnic_filter *fil, *tmp_fil; |
183 | struct hlist_node *tmp_hnode, *n; | |
184 | struct hlist_head *head; | |
4be41e92 | 185 | struct net_device *netdev = adapter->netdev; |
7e2cf4fe | 186 | struct ethhdr *phdr = (struct ethhdr *)(skb->data); |
c70001a9 SC |
187 | u64 src_addr = 0; |
188 | __le16 vlan_id = 0; | |
189 | u8 hindex; | |
190 | ||
4be41e92 | 191 | if (ether_addr_equal(phdr->h_source, adapter->mac_addr)) |
c70001a9 SC |
192 | return; |
193 | ||
4be41e92 SC |
194 | if (adapter->fhash.fnum >= adapter->fhash.fmax) { |
195 | adapter->stats.mac_filter_limit_overrun++; | |
196 | netdev_info(netdev, "Can not add more than %d mac addresses\n", | |
197 | adapter->fhash.fmax); | |
c70001a9 | 198 | return; |
4be41e92 | 199 | } |
c70001a9 | 200 | |
7e2cf4fe | 201 | /* Only NPAR capable devices support vlan based learning */ |
c70001a9 SC |
202 | if (adapter->flags & QLCNIC_ESWITCH_ENABLED) |
203 | vlan_id = first_desc->vlan_TCI; | |
204 | memcpy(&src_addr, phdr->h_source, ETH_ALEN); | |
4be41e92 | 205 | hindex = qlcnic_mac_hash(src_addr) & (adapter->fhash.fbucket_size - 1); |
c70001a9 SC |
206 | head = &(adapter->fhash.fhead[hindex]); |
207 | ||
208 | hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) { | |
209 | if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) && | |
7e2cf4fe | 210 | tmp_fil->vlan_id == vlan_id) { |
d17dd0d9 | 211 | if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime)) |
7e2cf4fe SC |
212 | qlcnic_change_filter(adapter, &src_addr, |
213 | vlan_id); | |
c70001a9 SC |
214 | tmp_fil->ftime = jiffies; |
215 | return; | |
216 | } | |
217 | } | |
218 | ||
219 | fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); | |
220 | if (!fil) | |
221 | return; | |
222 | ||
7e2cf4fe | 223 | qlcnic_change_filter(adapter, &src_addr, vlan_id); |
c70001a9 SC |
224 | fil->ftime = jiffies; |
225 | fil->vlan_id = vlan_id; | |
226 | memcpy(fil->faddr, &src_addr, ETH_ALEN); | |
227 | spin_lock(&adapter->mac_learn_lock); | |
228 | hlist_add_head(&(fil->fnode), head); | |
229 | adapter->fhash.fnum++; | |
230 | spin_unlock(&adapter->mac_learn_lock); | |
231 | } | |
232 | ||
d17dd0d9 SC |
233 | static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter, |
234 | struct cmd_desc_type0 *first_desc, struct sk_buff *skb) | |
c70001a9 | 235 | { |
d17dd0d9 | 236 | u8 l4proto, opcode = 0, hdr_len = 0; |
c70001a9 | 237 | u16 flags = 0, vlan_tci = 0; |
d17dd0d9 | 238 | int copied, offset, copy_len, size; |
c70001a9 SC |
239 | struct cmd_desc_type0 *hwdesc; |
240 | struct vlan_ethhdr *vh; | |
241 | struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; | |
242 | u16 protocol = ntohs(skb->protocol); | |
243 | u32 producer = tx_ring->producer; | |
244 | ||
245 | if (protocol == ETH_P_8021Q) { | |
246 | vh = (struct vlan_ethhdr *)skb->data; | |
247 | flags = FLAGS_VLAN_TAGGED; | |
248 | vlan_tci = ntohs(vh->h_vlan_TCI); | |
249 | protocol = ntohs(vh->h_vlan_encapsulated_proto); | |
250 | } else if (vlan_tx_tag_present(skb)) { | |
251 | flags = FLAGS_VLAN_OOB; | |
252 | vlan_tci = vlan_tx_tag_get(skb); | |
253 | } | |
254 | if (unlikely(adapter->pvid)) { | |
255 | if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED)) | |
256 | return -EIO; | |
257 | if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED)) | |
258 | goto set_flags; | |
259 | ||
260 | flags = FLAGS_VLAN_OOB; | |
261 | vlan_tci = adapter->pvid; | |
262 | } | |
263 | set_flags: | |
264 | qlcnic_set_tx_vlan_tci(first_desc, vlan_tci); | |
265 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); | |
266 | ||
267 | if (*(skb->data) & BIT_0) { | |
268 | flags |= BIT_0; | |
269 | memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN); | |
270 | } | |
271 | opcode = TX_ETHER_PKT; | |
272 | if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) && | |
d17dd0d9 | 273 | skb_shinfo(skb)->gso_size > 0) { |
c70001a9 | 274 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
c70001a9 SC |
275 | first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
276 | first_desc->total_hdr_length = hdr_len; | |
c70001a9 SC |
277 | opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO; |
278 | ||
279 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
280 | * the descriptor ring */ | |
281 | copied = 0; | |
282 | offset = 2; | |
283 | ||
284 | if (flags & FLAGS_VLAN_OOB) { | |
285 | first_desc->total_hdr_length += VLAN_HLEN; | |
286 | first_desc->tcp_hdr_offset = VLAN_HLEN; | |
287 | first_desc->ip_hdr_offset = VLAN_HLEN; | |
d17dd0d9 | 288 | |
c70001a9 SC |
289 | /* Only in case of TSO on vlan device */ |
290 | flags |= FLAGS_VLAN_TAGGED; | |
291 | ||
292 | /* Create a TSO vlan header template for firmware */ | |
c70001a9 SC |
293 | hwdesc = &tx_ring->desc_head[producer]; |
294 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
295 | ||
296 | copy_len = min((int)sizeof(struct cmd_desc_type0) - | |
d17dd0d9 | 297 | offset, hdr_len + VLAN_HLEN); |
c70001a9 SC |
298 | |
299 | vh = (struct vlan_ethhdr *)((char *) hwdesc + 2); | |
300 | skb_copy_from_linear_data(skb, vh, 12); | |
301 | vh->h_vlan_proto = htons(ETH_P_8021Q); | |
302 | vh->h_vlan_TCI = htons(vlan_tci); | |
303 | ||
304 | skb_copy_from_linear_data_offset(skb, 12, | |
d17dd0d9 SC |
305 | (char *)vh + 16, |
306 | copy_len - 16); | |
c70001a9 SC |
307 | copied = copy_len - VLAN_HLEN; |
308 | offset = 0; | |
c70001a9 SC |
309 | producer = get_next_index(producer, tx_ring->num_desc); |
310 | } | |
311 | ||
312 | while (copied < hdr_len) { | |
d17dd0d9 SC |
313 | size = (int)sizeof(struct cmd_desc_type0) - offset; |
314 | copy_len = min(size, (hdr_len - copied)); | |
c70001a9 SC |
315 | hwdesc = &tx_ring->desc_head[producer]; |
316 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
c70001a9 | 317 | skb_copy_from_linear_data_offset(skb, copied, |
d17dd0d9 SC |
318 | (char *)hwdesc + |
319 | offset, copy_len); | |
c70001a9 SC |
320 | copied += copy_len; |
321 | offset = 0; | |
c70001a9 SC |
322 | producer = get_next_index(producer, tx_ring->num_desc); |
323 | } | |
324 | ||
325 | tx_ring->producer = producer; | |
326 | smp_mb(); | |
327 | adapter->stats.lso_frames++; | |
328 | ||
329 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
c70001a9 SC |
330 | if (protocol == ETH_P_IP) { |
331 | l4proto = ip_hdr(skb)->protocol; | |
332 | ||
333 | if (l4proto == IPPROTO_TCP) | |
334 | opcode = TX_TCP_PKT; | |
335 | else if (l4proto == IPPROTO_UDP) | |
336 | opcode = TX_UDP_PKT; | |
337 | } else if (protocol == ETH_P_IPV6) { | |
338 | l4proto = ipv6_hdr(skb)->nexthdr; | |
339 | ||
340 | if (l4proto == IPPROTO_TCP) | |
341 | opcode = TX_TCPV6_PKT; | |
342 | else if (l4proto == IPPROTO_UDP) | |
343 | opcode = TX_UDPV6_PKT; | |
344 | } | |
345 | } | |
346 | first_desc->tcp_hdr_offset += skb_transport_offset(skb); | |
347 | first_desc->ip_hdr_offset += skb_network_offset(skb); | |
348 | qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
d17dd0d9 SC |
353 | static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb, |
354 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
355 | { |
356 | struct qlcnic_skb_frag *nf; | |
357 | struct skb_frag_struct *frag; | |
358 | int i, nr_frags; | |
359 | dma_addr_t map; | |
360 | ||
361 | nr_frags = skb_shinfo(skb)->nr_frags; | |
362 | nf = &pbuf->frag_array[0]; | |
363 | ||
d17dd0d9 SC |
364 | map = pci_map_single(pdev, skb->data, skb_headlen(skb), |
365 | PCI_DMA_TODEVICE); | |
c70001a9 SC |
366 | if (pci_dma_mapping_error(pdev, map)) |
367 | goto out_err; | |
368 | ||
369 | nf->dma = map; | |
370 | nf->length = skb_headlen(skb); | |
371 | ||
372 | for (i = 0; i < nr_frags; i++) { | |
373 | frag = &skb_shinfo(skb)->frags[i]; | |
374 | nf = &pbuf->frag_array[i+1]; | |
c70001a9 SC |
375 | map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag), |
376 | DMA_TO_DEVICE); | |
377 | if (dma_mapping_error(&pdev->dev, map)) | |
378 | goto unwind; | |
379 | ||
380 | nf->dma = map; | |
381 | nf->length = skb_frag_size(frag); | |
382 | } | |
383 | ||
384 | return 0; | |
385 | ||
386 | unwind: | |
387 | while (--i >= 0) { | |
388 | nf = &pbuf->frag_array[i+1]; | |
389 | pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE); | |
390 | } | |
391 | ||
392 | nf = &pbuf->frag_array[0]; | |
393 | pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE); | |
394 | ||
395 | out_err: | |
396 | return -ENOMEM; | |
397 | } | |
398 | ||
d17dd0d9 SC |
399 | static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb, |
400 | struct qlcnic_cmd_buffer *pbuf) | |
c70001a9 SC |
401 | { |
402 | struct qlcnic_skb_frag *nf = &pbuf->frag_array[0]; | |
d17dd0d9 | 403 | int i, nr_frags = skb_shinfo(skb)->nr_frags; |
c70001a9 SC |
404 | |
405 | for (i = 0; i < nr_frags; i++) { | |
406 | nf = &pbuf->frag_array[i+1]; | |
407 | pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE); | |
408 | } | |
409 | ||
410 | nf = &pbuf->frag_array[0]; | |
411 | pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE); | |
412 | pbuf->skb = NULL; | |
413 | } | |
414 | ||
d17dd0d9 | 415 | static inline void qlcnic_clear_cmddesc(u64 *desc) |
c70001a9 SC |
416 | { |
417 | desc[0] = 0ULL; | |
418 | desc[2] = 0ULL; | |
419 | desc[7] = 0ULL; | |
420 | } | |
421 | ||
d17dd0d9 | 422 | netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
c70001a9 SC |
423 | { |
424 | struct qlcnic_adapter *adapter = netdev_priv(netdev); | |
425 | struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; | |
426 | struct qlcnic_cmd_buffer *pbuf; | |
427 | struct qlcnic_skb_frag *buffrag; | |
428 | struct cmd_desc_type0 *hwdesc, *first_desc; | |
429 | struct pci_dev *pdev; | |
430 | struct ethhdr *phdr; | |
d17dd0d9 SC |
431 | int i, k, frag_count, delta = 0; |
432 | u32 producer, num_txd; | |
c70001a9 | 433 | |
d17dd0d9 | 434 | num_txd = tx_ring->num_desc; |
c70001a9 SC |
435 | |
436 | if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) { | |
437 | netif_stop_queue(netdev); | |
438 | return NETDEV_TX_BUSY; | |
439 | } | |
440 | ||
441 | if (adapter->flags & QLCNIC_MACSPOOF) { | |
442 | phdr = (struct ethhdr *)skb->data; | |
443 | if (!ether_addr_equal(phdr->h_source, adapter->mac_addr)) | |
444 | goto drop_packet; | |
445 | } | |
446 | ||
447 | frag_count = skb_shinfo(skb)->nr_frags + 1; | |
448 | /* 14 frags supported for normal packet and | |
449 | * 32 frags supported for TSO packet | |
450 | */ | |
451 | if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) { | |
c70001a9 SC |
452 | for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++) |
453 | delta += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
454 | ||
455 | if (!__pskb_pull_tail(skb, delta)) | |
456 | goto drop_packet; | |
457 | ||
458 | frag_count = 1 + skb_shinfo(skb)->nr_frags; | |
459 | } | |
460 | ||
461 | if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) { | |
462 | netif_stop_queue(netdev); | |
d17dd0d9 | 463 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { |
c70001a9 | 464 | netif_start_queue(netdev); |
d17dd0d9 | 465 | } else { |
c70001a9 SC |
466 | adapter->stats.xmit_off++; |
467 | return NETDEV_TX_BUSY; | |
468 | } | |
469 | } | |
470 | ||
471 | producer = tx_ring->producer; | |
472 | pbuf = &tx_ring->cmd_buf_arr[producer]; | |
c70001a9 | 473 | pdev = adapter->pdev; |
d17dd0d9 SC |
474 | first_desc = &tx_ring->desc_head[producer]; |
475 | hwdesc = &tx_ring->desc_head[producer]; | |
c70001a9 SC |
476 | qlcnic_clear_cmddesc((u64 *)hwdesc); |
477 | ||
478 | if (qlcnic_map_tx_skb(pdev, skb, pbuf)) { | |
479 | adapter->stats.tx_dma_map_error++; | |
480 | goto drop_packet; | |
481 | } | |
482 | ||
483 | pbuf->skb = skb; | |
484 | pbuf->frag_count = frag_count; | |
485 | ||
486 | qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len); | |
487 | qlcnic_set_tx_port(first_desc, adapter->portnum); | |
488 | ||
489 | for (i = 0; i < frag_count; i++) { | |
c70001a9 SC |
490 | k = i % 4; |
491 | ||
492 | if ((k == 0) && (i > 0)) { | |
493 | /* move to next desc.*/ | |
494 | producer = get_next_index(producer, num_txd); | |
495 | hwdesc = &tx_ring->desc_head[producer]; | |
496 | qlcnic_clear_cmddesc((u64 *)hwdesc); | |
497 | tx_ring->cmd_buf_arr[producer].skb = NULL; | |
498 | } | |
499 | ||
500 | buffrag = &pbuf->frag_array[i]; | |
c70001a9 SC |
501 | hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length); |
502 | switch (k) { | |
503 | case 0: | |
504 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
505 | break; | |
506 | case 1: | |
507 | hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma); | |
508 | break; | |
509 | case 2: | |
510 | hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma); | |
511 | break; | |
512 | case 3: | |
513 | hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma); | |
514 | break; | |
515 | } | |
516 | } | |
517 | ||
518 | tx_ring->producer = get_next_index(producer, num_txd); | |
519 | smp_mb(); | |
520 | ||
521 | if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb))) | |
522 | goto unwind_buff; | |
523 | ||
524 | if (adapter->mac_learn) | |
4be41e92 | 525 | qlcnic_send_filter(adapter, first_desc, skb); |
c70001a9 SC |
526 | |
527 | adapter->stats.txbytes += skb->len; | |
528 | adapter->stats.xmitcalled++; | |
529 | ||
530 | qlcnic_update_cmd_producer(tx_ring); | |
531 | ||
532 | return NETDEV_TX_OK; | |
533 | ||
534 | unwind_buff: | |
535 | qlcnic_unmap_buffers(pdev, skb, pbuf); | |
536 | drop_packet: | |
537 | adapter->stats.txdropped++; | |
538 | dev_kfree_skb_any(skb); | |
539 | return NETDEV_TX_OK; | |
540 | } | |
541 | ||
7f966452 | 542 | void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) |
c70001a9 SC |
543 | { |
544 | struct net_device *netdev = adapter->netdev; | |
545 | ||
546 | if (adapter->ahw->linkup && !linkup) { | |
547 | netdev_info(netdev, "NIC Link is down\n"); | |
548 | adapter->ahw->linkup = 0; | |
549 | if (netif_running(netdev)) { | |
550 | netif_carrier_off(netdev); | |
551 | netif_stop_queue(netdev); | |
552 | } | |
553 | } else if (!adapter->ahw->linkup && linkup) { | |
554 | netdev_info(netdev, "NIC Link is up\n"); | |
555 | adapter->ahw->linkup = 1; | |
556 | if (netif_running(netdev)) { | |
557 | netif_carrier_on(netdev); | |
558 | netif_wake_queue(netdev); | |
559 | } | |
560 | } | |
561 | } | |
562 | ||
d17dd0d9 SC |
563 | static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter, |
564 | struct qlcnic_host_rds_ring *rds_ring, | |
565 | struct qlcnic_rx_buffer *buffer) | |
c70001a9 SC |
566 | { |
567 | struct sk_buff *skb; | |
568 | dma_addr_t dma; | |
569 | struct pci_dev *pdev = adapter->pdev; | |
570 | ||
571 | skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size); | |
572 | if (!skb) { | |
573 | adapter->stats.skb_alloc_failure++; | |
574 | return -ENOMEM; | |
575 | } | |
576 | ||
577 | skb_reserve(skb, NET_IP_ALIGN); | |
4be41e92 SC |
578 | dma = pci_map_single(pdev, skb->data, |
579 | rds_ring->dma_size, PCI_DMA_FROMDEVICE); | |
c70001a9 SC |
580 | |
581 | if (pci_dma_mapping_error(pdev, dma)) { | |
582 | adapter->stats.rx_dma_map_error++; | |
583 | dev_kfree_skb_any(skb); | |
584 | return -ENOMEM; | |
585 | } | |
586 | ||
587 | buffer->skb = skb; | |
588 | buffer->dma = dma; | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, | |
4be41e92 SC |
594 | struct qlcnic_host_rds_ring *rds_ring, |
595 | u8 ring_id) | |
c70001a9 SC |
596 | { |
597 | struct rcv_desc *pdesc; | |
598 | struct qlcnic_rx_buffer *buffer; | |
599 | int count = 0; | |
4be41e92 | 600 | uint32_t producer, handle; |
c70001a9 SC |
601 | struct list_head *head; |
602 | ||
603 | if (!spin_trylock(&rds_ring->lock)) | |
604 | return; | |
605 | ||
606 | producer = rds_ring->producer; | |
c70001a9 | 607 | head = &rds_ring->free_list; |
d17dd0d9 | 608 | while (!list_empty(head)) { |
c70001a9 SC |
609 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); |
610 | ||
611 | if (!buffer->skb) { | |
612 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
613 | break; | |
614 | } | |
c70001a9 SC |
615 | count++; |
616 | list_del(&buffer->list); | |
617 | ||
618 | /* make a rcv descriptor */ | |
619 | pdesc = &rds_ring->desc_head[producer]; | |
4be41e92 SC |
620 | handle = qlcnic_get_ref_handle(adapter, |
621 | buffer->ref_handle, ring_id); | |
622 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 SC |
623 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
624 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
c70001a9 SC |
625 | producer = get_next_index(producer, rds_ring->num_desc); |
626 | } | |
c70001a9 SC |
627 | if (count) { |
628 | rds_ring->producer = producer; | |
629 | writel((producer - 1) & (rds_ring->num_desc - 1), | |
d17dd0d9 | 630 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
631 | } |
632 | spin_unlock(&rds_ring->lock); | |
633 | } | |
634 | ||
4be41e92 SC |
635 | static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter, |
636 | struct qlcnic_host_tx_ring *tx_ring, | |
637 | int budget) | |
c70001a9 SC |
638 | { |
639 | u32 sw_consumer, hw_consumer; | |
d17dd0d9 | 640 | int i, done, count = 0; |
c70001a9 SC |
641 | struct qlcnic_cmd_buffer *buffer; |
642 | struct pci_dev *pdev = adapter->pdev; | |
643 | struct net_device *netdev = adapter->netdev; | |
644 | struct qlcnic_skb_frag *frag; | |
c70001a9 SC |
645 | |
646 | if (!spin_trylock(&adapter->tx_clean_lock)) | |
647 | return 1; | |
648 | ||
649 | sw_consumer = tx_ring->sw_consumer; | |
650 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
651 | ||
652 | while (sw_consumer != hw_consumer) { | |
653 | buffer = &tx_ring->cmd_buf_arr[sw_consumer]; | |
654 | if (buffer->skb) { | |
655 | frag = &buffer->frag_array[0]; | |
656 | pci_unmap_single(pdev, frag->dma, frag->length, | |
657 | PCI_DMA_TODEVICE); | |
658 | frag->dma = 0ULL; | |
659 | for (i = 1; i < buffer->frag_count; i++) { | |
660 | frag++; | |
661 | pci_unmap_page(pdev, frag->dma, frag->length, | |
662 | PCI_DMA_TODEVICE); | |
663 | frag->dma = 0ULL; | |
664 | } | |
c70001a9 SC |
665 | adapter->stats.xmitfinished++; |
666 | dev_kfree_skb_any(buffer->skb); | |
667 | buffer->skb = NULL; | |
668 | } | |
669 | ||
670 | sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); | |
4be41e92 | 671 | if (++count >= budget) |
c70001a9 SC |
672 | break; |
673 | } | |
674 | ||
675 | if (count && netif_running(netdev)) { | |
676 | tx_ring->sw_consumer = sw_consumer; | |
c70001a9 | 677 | smp_mb(); |
c70001a9 SC |
678 | if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) { |
679 | if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { | |
680 | netif_wake_queue(netdev); | |
681 | adapter->stats.xmit_on++; | |
682 | } | |
683 | } | |
684 | adapter->tx_timeo_cnt = 0; | |
685 | } | |
686 | /* | |
687 | * If everything is freed up to consumer then check if the ring is full | |
688 | * If the ring is full then check if more needs to be freed and | |
689 | * schedule the call back again. | |
690 | * | |
691 | * This happens when there are 2 CPUs. One could be freeing and the | |
692 | * other filling it. If the ring is full when we get out of here and | |
693 | * the card has already interrupted the host then the host can miss the | |
694 | * interrupt. | |
695 | * | |
696 | * There is still a possible race condition and the host could miss an | |
697 | * interrupt. The card has to take care of this. | |
698 | */ | |
699 | hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); | |
700 | done = (sw_consumer == hw_consumer); | |
701 | spin_unlock(&adapter->tx_clean_lock); | |
702 | ||
703 | return done; | |
704 | } | |
705 | ||
706 | static int qlcnic_poll(struct napi_struct *napi, int budget) | |
707 | { | |
4be41e92 | 708 | int tx_complete, work_done; |
d17dd0d9 SC |
709 | struct qlcnic_host_sds_ring *sds_ring; |
710 | struct qlcnic_adapter *adapter; | |
c70001a9 | 711 | |
d17dd0d9 SC |
712 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
713 | adapter = sds_ring->adapter; | |
4be41e92 SC |
714 | tx_complete = qlcnic_process_cmd_ring(adapter, adapter->tx_ring, |
715 | budget); | |
c70001a9 | 716 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
c70001a9 SC |
717 | if ((work_done < budget) && tx_complete) { |
718 | napi_complete(&sds_ring->napi); | |
719 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
720 | qlcnic_enable_int(sds_ring); | |
721 | } | |
722 | ||
723 | return work_done; | |
724 | } | |
725 | ||
726 | static int qlcnic_rx_poll(struct napi_struct *napi, int budget) | |
727 | { | |
d17dd0d9 SC |
728 | struct qlcnic_host_sds_ring *sds_ring; |
729 | struct qlcnic_adapter *adapter; | |
c70001a9 SC |
730 | int work_done; |
731 | ||
d17dd0d9 SC |
732 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
733 | adapter = sds_ring->adapter; | |
734 | ||
c70001a9 SC |
735 | work_done = qlcnic_process_rcv_ring(sds_ring, budget); |
736 | ||
737 | if (work_done < budget) { | |
738 | napi_complete(&sds_ring->napi); | |
739 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
740 | qlcnic_enable_int(sds_ring); | |
741 | } | |
742 | ||
743 | return work_done; | |
744 | } | |
745 | ||
d17dd0d9 SC |
746 | static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, |
747 | struct qlcnic_fw_msg *msg) | |
c70001a9 SC |
748 | { |
749 | u32 cable_OUI; | |
d17dd0d9 SC |
750 | u16 cable_len, link_speed; |
751 | u8 link_status, module, duplex, autoneg, lb_status = 0; | |
c70001a9 SC |
752 | struct net_device *netdev = adapter->netdev; |
753 | ||
79788450 | 754 | adapter->ahw->has_link_events = 1; |
c70001a9 SC |
755 | |
756 | cable_OUI = msg->body[1] & 0xffffffff; | |
757 | cable_len = (msg->body[1] >> 32) & 0xffff; | |
758 | link_speed = (msg->body[1] >> 48) & 0xffff; | |
759 | ||
760 | link_status = msg->body[2] & 0xff; | |
761 | duplex = (msg->body[2] >> 16) & 0xff; | |
762 | autoneg = (msg->body[2] >> 24) & 0xff; | |
763 | lb_status = (msg->body[2] >> 32) & 0x3; | |
764 | ||
765 | module = (msg->body[2] >> 8) & 0xff; | |
766 | if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) | |
d17dd0d9 SC |
767 | dev_info(&netdev->dev, |
768 | "unsupported cable: OUI 0x%x, length %d\n", | |
769 | cable_OUI, cable_len); | |
c70001a9 SC |
770 | else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) |
771 | dev_info(&netdev->dev, "unsupported cable length %d\n", | |
d17dd0d9 | 772 | cable_len); |
c70001a9 SC |
773 | |
774 | if (!link_status && (lb_status == QLCNIC_ILB_MODE || | |
775 | lb_status == QLCNIC_ELB_MODE)) | |
776 | adapter->ahw->loopback_state |= QLCNIC_LINKEVENT; | |
777 | ||
778 | qlcnic_advert_link_change(adapter, link_status); | |
779 | ||
780 | if (duplex == LINKEVENT_FULL_DUPLEX) | |
79788450 | 781 | adapter->ahw->link_duplex = DUPLEX_FULL; |
c70001a9 | 782 | else |
79788450 | 783 | adapter->ahw->link_duplex = DUPLEX_HALF; |
c70001a9 | 784 | |
79788450 SC |
785 | adapter->ahw->module_type = module; |
786 | adapter->ahw->link_autoneg = autoneg; | |
c70001a9 SC |
787 | |
788 | if (link_status) { | |
79788450 | 789 | adapter->ahw->link_speed = link_speed; |
c70001a9 | 790 | } else { |
79788450 SC |
791 | adapter->ahw->link_speed = SPEED_UNKNOWN; |
792 | adapter->ahw->link_duplex = DUPLEX_UNKNOWN; | |
c70001a9 SC |
793 | } |
794 | } | |
795 | ||
d17dd0d9 SC |
796 | static void qlcnic_handle_fw_message(int desc_cnt, int index, |
797 | struct qlcnic_host_sds_ring *sds_ring) | |
c70001a9 SC |
798 | { |
799 | struct qlcnic_fw_msg msg; | |
800 | struct status_desc *desc; | |
801 | struct qlcnic_adapter *adapter; | |
802 | struct device *dev; | |
803 | int i = 0, opcode, ret; | |
804 | ||
805 | while (desc_cnt > 0 && i < 8) { | |
806 | desc = &sds_ring->desc_head[index]; | |
807 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]); | |
808 | msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]); | |
809 | ||
810 | index = get_next_index(index, sds_ring->num_desc); | |
811 | desc_cnt--; | |
812 | } | |
813 | ||
814 | adapter = sds_ring->adapter; | |
815 | dev = &adapter->pdev->dev; | |
816 | opcode = qlcnic_get_nic_msg_opcode(msg.body[0]); | |
817 | ||
818 | switch (opcode) { | |
819 | case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE: | |
820 | qlcnic_handle_linkevent(adapter, &msg); | |
821 | break; | |
822 | case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK: | |
823 | ret = (u32)(msg.body[1]); | |
824 | switch (ret) { | |
825 | case 0: | |
826 | adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE; | |
827 | break; | |
828 | case 1: | |
829 | dev_info(dev, "loopback already in progress\n"); | |
79788450 | 830 | adapter->ahw->diag_cnt = -QLCNIC_TEST_IN_PROGRESS; |
c70001a9 SC |
831 | break; |
832 | case 2: | |
833 | dev_info(dev, "loopback cable is not connected\n"); | |
79788450 | 834 | adapter->ahw->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN; |
c70001a9 SC |
835 | break; |
836 | default: | |
d17dd0d9 SC |
837 | dev_info(dev, |
838 | "loopback configure request failed, err %x\n", | |
839 | ret); | |
79788450 | 840 | adapter->ahw->diag_cnt = -QLCNIC_UNDEFINED_ERROR; |
c70001a9 SC |
841 | break; |
842 | } | |
843 | break; | |
844 | default: | |
845 | break; | |
846 | } | |
847 | } | |
848 | ||
4be41e92 SC |
849 | struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
850 | struct qlcnic_host_rds_ring *ring, | |
851 | u16 index, u16 cksum) | |
c70001a9 SC |
852 | { |
853 | struct qlcnic_rx_buffer *buffer; | |
854 | struct sk_buff *skb; | |
855 | ||
4be41e92 | 856 | buffer = &ring->rx_buf_arr[index]; |
c70001a9 SC |
857 | if (unlikely(buffer->skb == NULL)) { |
858 | WARN_ON(1); | |
859 | return NULL; | |
860 | } | |
861 | ||
4be41e92 | 862 | pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size, |
d17dd0d9 | 863 | PCI_DMA_FROMDEVICE); |
c70001a9 SC |
864 | |
865 | skb = buffer->skb; | |
c70001a9 | 866 | if (likely((adapter->netdev->features & NETIF_F_RXCSUM) && |
d17dd0d9 | 867 | (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) { |
c70001a9 SC |
868 | adapter->stats.csummed++; |
869 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
870 | } else { | |
871 | skb_checksum_none_assert(skb); | |
872 | } | |
873 | ||
4be41e92 | 874 | |
c70001a9 SC |
875 | buffer->skb = NULL; |
876 | ||
877 | return skb; | |
878 | } | |
879 | ||
d17dd0d9 SC |
880 | static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, |
881 | struct sk_buff *skb, u16 *vlan_tag) | |
c70001a9 SC |
882 | { |
883 | struct ethhdr *eth_hdr; | |
884 | ||
885 | if (!__vlan_get_tag(skb, vlan_tag)) { | |
d17dd0d9 | 886 | eth_hdr = (struct ethhdr *)skb->data; |
c70001a9 SC |
887 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); |
888 | skb_pull(skb, VLAN_HLEN); | |
889 | } | |
890 | if (!adapter->pvid) | |
891 | return 0; | |
892 | ||
893 | if (*vlan_tag == adapter->pvid) { | |
894 | /* Outer vlan tag. Packet should follow non-vlan path */ | |
895 | *vlan_tag = 0xffff; | |
896 | return 0; | |
897 | } | |
898 | if (adapter->flags & QLCNIC_TAGGING_ENABLED) | |
899 | return 0; | |
900 | ||
901 | return -EINVAL; | |
902 | } | |
903 | ||
904 | static struct qlcnic_rx_buffer * | |
905 | qlcnic_process_rcv(struct qlcnic_adapter *adapter, | |
d17dd0d9 SC |
906 | struct qlcnic_host_sds_ring *sds_ring, int ring, |
907 | u64 sts_data0) | |
c70001a9 SC |
908 | { |
909 | struct net_device *netdev = adapter->netdev; | |
910 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
911 | struct qlcnic_rx_buffer *buffer; | |
912 | struct sk_buff *skb; | |
913 | struct qlcnic_host_rds_ring *rds_ring; | |
914 | int index, length, cksum, pkt_offset; | |
915 | u16 vid = 0xffff; | |
916 | ||
917 | if (unlikely(ring >= adapter->max_rds_rings)) | |
918 | return NULL; | |
919 | ||
920 | rds_ring = &recv_ctx->rds_rings[ring]; | |
921 | ||
922 | index = qlcnic_get_sts_refhandle(sts_data0); | |
923 | if (unlikely(index >= rds_ring->num_desc)) | |
924 | return NULL; | |
925 | ||
926 | buffer = &rds_ring->rx_buf_arr[index]; | |
c70001a9 SC |
927 | length = qlcnic_get_sts_totallength(sts_data0); |
928 | cksum = qlcnic_get_sts_status(sts_data0); | |
929 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
930 | ||
931 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
932 | if (!skb) | |
933 | return buffer; | |
934 | ||
935 | if (length > rds_ring->skb_size) | |
936 | skb_put(skb, rds_ring->skb_size); | |
937 | else | |
938 | skb_put(skb, length); | |
939 | ||
940 | if (pkt_offset) | |
941 | skb_pull(skb, pkt_offset); | |
942 | ||
943 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
944 | adapter->stats.rxdropped++; | |
945 | dev_kfree_skb(skb); | |
946 | return buffer; | |
947 | } | |
948 | ||
949 | skb->protocol = eth_type_trans(skb, netdev); | |
950 | ||
951 | if (vid != 0xffff) | |
952 | __vlan_hwaccel_put_tag(skb, vid); | |
953 | ||
954 | napi_gro_receive(&sds_ring->napi, skb); | |
955 | ||
956 | adapter->stats.rx_pkts++; | |
957 | adapter->stats.rxbytes += length; | |
958 | ||
959 | return buffer; | |
960 | } | |
961 | ||
962 | #define QLC_TCP_HDR_SIZE 20 | |
963 | #define QLC_TCP_TS_OPTION_SIZE 12 | |
964 | #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE) | |
965 | ||
966 | static struct qlcnic_rx_buffer * | |
967 | qlcnic_process_lro(struct qlcnic_adapter *adapter, | |
d17dd0d9 | 968 | int ring, u64 sts_data0, u64 sts_data1) |
c70001a9 SC |
969 | { |
970 | struct net_device *netdev = adapter->netdev; | |
971 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
972 | struct qlcnic_rx_buffer *buffer; | |
973 | struct sk_buff *skb; | |
974 | struct qlcnic_host_rds_ring *rds_ring; | |
975 | struct iphdr *iph; | |
976 | struct tcphdr *th; | |
977 | bool push, timestamp; | |
d17dd0d9 SC |
978 | int index, l2_hdr_offset, l4_hdr_offset; |
979 | u16 lro_length, length, data_offset, vid = 0xffff; | |
c70001a9 | 980 | u32 seq_number; |
c70001a9 SC |
981 | |
982 | if (unlikely(ring > adapter->max_rds_rings)) | |
983 | return NULL; | |
984 | ||
985 | rds_ring = &recv_ctx->rds_rings[ring]; | |
986 | ||
987 | index = qlcnic_get_lro_sts_refhandle(sts_data0); | |
988 | if (unlikely(index > rds_ring->num_desc)) | |
989 | return NULL; | |
990 | ||
991 | buffer = &rds_ring->rx_buf_arr[index]; | |
992 | ||
993 | timestamp = qlcnic_get_lro_sts_timestamp(sts_data0); | |
994 | lro_length = qlcnic_get_lro_sts_length(sts_data0); | |
995 | l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0); | |
996 | l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0); | |
997 | push = qlcnic_get_lro_sts_push_flag(sts_data0); | |
998 | seq_number = qlcnic_get_lro_sts_seq_number(sts_data1); | |
999 | ||
1000 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1001 | if (!skb) | |
1002 | return buffer; | |
1003 | ||
1004 | if (timestamp) | |
1005 | data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE; | |
1006 | else | |
1007 | data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE; | |
1008 | ||
1009 | skb_put(skb, lro_length + data_offset); | |
c70001a9 SC |
1010 | skb_pull(skb, l2_hdr_offset); |
1011 | ||
1012 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1013 | adapter->stats.rxdropped++; | |
1014 | dev_kfree_skb(skb); | |
1015 | return buffer; | |
1016 | } | |
1017 | ||
1018 | skb->protocol = eth_type_trans(skb, netdev); | |
c70001a9 SC |
1019 | iph = (struct iphdr *)skb->data; |
1020 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
c70001a9 SC |
1021 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; |
1022 | iph->tot_len = htons(length); | |
1023 | iph->check = 0; | |
1024 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
1025 | th->psh = push; | |
1026 | th->seq = htonl(seq_number); | |
c70001a9 SC |
1027 | length = skb->len; |
1028 | ||
1029 | if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) | |
1030 | skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1); | |
1031 | ||
1032 | if (vid != 0xffff) | |
1033 | __vlan_hwaccel_put_tag(skb, vid); | |
1034 | netif_receive_skb(skb); | |
1035 | ||
1036 | adapter->stats.lro_pkts++; | |
1037 | adapter->stats.lrobytes += length; | |
1038 | ||
1039 | return buffer; | |
1040 | } | |
1041 | ||
d17dd0d9 | 1042 | int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) |
c70001a9 | 1043 | { |
d17dd0d9 | 1044 | struct qlcnic_host_rds_ring *rds_ring; |
c70001a9 SC |
1045 | struct qlcnic_adapter *adapter = sds_ring->adapter; |
1046 | struct list_head *cur; | |
1047 | struct status_desc *desc; | |
1048 | struct qlcnic_rx_buffer *rxbuf; | |
4be41e92 | 1049 | int opcode, desc_cnt, count = 0; |
c70001a9 | 1050 | u64 sts_data0, sts_data1; |
4be41e92 | 1051 | u8 ring; |
c70001a9 SC |
1052 | u32 consumer = sds_ring->consumer; |
1053 | ||
1054 | while (count < max) { | |
1055 | desc = &sds_ring->desc_head[consumer]; | |
1056 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1057 | ||
1058 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1059 | break; | |
1060 | ||
1061 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1062 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
c70001a9 SC |
1063 | switch (opcode) { |
1064 | case QLCNIC_RXPKT_DESC: | |
1065 | case QLCNIC_OLD_RXPKT_DESC: | |
1066 | case QLCNIC_SYN_OFFLOAD: | |
1067 | ring = qlcnic_get_sts_type(sts_data0); | |
d17dd0d9 SC |
1068 | rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, |
1069 | sts_data0); | |
c70001a9 SC |
1070 | break; |
1071 | case QLCNIC_LRO_DESC: | |
1072 | ring = qlcnic_get_lro_sts_type(sts_data0); | |
1073 | sts_data1 = le64_to_cpu(desc->status_desc_data[1]); | |
1074 | rxbuf = qlcnic_process_lro(adapter, ring, sts_data0, | |
1075 | sts_data1); | |
1076 | break; | |
1077 | case QLCNIC_RESPONSE_DESC: | |
1078 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1079 | default: | |
1080 | goto skip; | |
1081 | } | |
c70001a9 SC |
1082 | WARN_ON(desc_cnt > 1); |
1083 | ||
1084 | if (likely(rxbuf)) | |
1085 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1086 | else | |
1087 | adapter->stats.null_rxbuf++; | |
c70001a9 SC |
1088 | skip: |
1089 | for (; desc_cnt > 0; desc_cnt--) { | |
1090 | desc = &sds_ring->desc_head[consumer]; | |
4be41e92 | 1091 | desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW; |
c70001a9 SC |
1092 | consumer = get_next_index(consumer, sds_ring->num_desc); |
1093 | } | |
1094 | count++; | |
1095 | } | |
1096 | ||
1097 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
d17dd0d9 | 1098 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; |
c70001a9 SC |
1099 | if (!list_empty(&sds_ring->free_list[ring])) { |
1100 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
d17dd0d9 SC |
1101 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, |
1102 | list); | |
c70001a9 SC |
1103 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); |
1104 | } | |
1105 | spin_lock(&rds_ring->lock); | |
1106 | list_splice_tail_init(&sds_ring->free_list[ring], | |
d17dd0d9 | 1107 | &rds_ring->free_list); |
c70001a9 SC |
1108 | spin_unlock(&rds_ring->lock); |
1109 | } | |
1110 | ||
4be41e92 | 1111 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); |
c70001a9 SC |
1112 | } |
1113 | ||
1114 | if (count) { | |
1115 | sds_ring->consumer = consumer; | |
1116 | writel(consumer, sds_ring->crb_sts_consumer); | |
1117 | } | |
1118 | ||
1119 | return count; | |
1120 | } | |
1121 | ||
d17dd0d9 | 1122 | void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, |
4be41e92 | 1123 | struct qlcnic_host_rds_ring *rds_ring, u8 ring_id) |
c70001a9 SC |
1124 | { |
1125 | struct rcv_desc *pdesc; | |
1126 | struct qlcnic_rx_buffer *buffer; | |
1127 | int count = 0; | |
4be41e92 | 1128 | u32 producer, handle; |
c70001a9 SC |
1129 | struct list_head *head; |
1130 | ||
1131 | producer = rds_ring->producer; | |
c70001a9 | 1132 | head = &rds_ring->free_list; |
d17dd0d9 | 1133 | |
c70001a9 SC |
1134 | while (!list_empty(head)) { |
1135 | ||
1136 | buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); | |
1137 | ||
1138 | if (!buffer->skb) { | |
1139 | if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) | |
1140 | break; | |
1141 | } | |
1142 | ||
1143 | count++; | |
1144 | list_del(&buffer->list); | |
1145 | ||
1146 | /* make a rcv descriptor */ | |
1147 | pdesc = &rds_ring->desc_head[producer]; | |
1148 | pdesc->addr_buffer = cpu_to_le64(buffer->dma); | |
4be41e92 SC |
1149 | handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle, |
1150 | ring_id); | |
1151 | pdesc->reference_handle = cpu_to_le16(handle); | |
c70001a9 | 1152 | pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); |
c70001a9 SC |
1153 | producer = get_next_index(producer, rds_ring->num_desc); |
1154 | } | |
1155 | ||
1156 | if (count) { | |
1157 | rds_ring->producer = producer; | |
1158 | writel((producer-1) & (rds_ring->num_desc-1), | |
d17dd0d9 | 1159 | rds_ring->crb_rcv_producer); |
c70001a9 SC |
1160 | } |
1161 | } | |
1162 | ||
1163 | static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter) | |
1164 | { | |
1165 | int i; | |
1166 | unsigned char *data = skb->data; | |
1167 | ||
d17dd0d9 | 1168 | pr_info(KERN_INFO "\n"); |
c70001a9 SC |
1169 | for (i = 0; i < skb->len; i++) { |
1170 | QLCDB(adapter, DRV, "%02x ", data[i]); | |
1171 | if ((i & 0x0f) == 8) | |
d17dd0d9 | 1172 | pr_info(KERN_INFO "\n"); |
c70001a9 SC |
1173 | } |
1174 | } | |
1175 | ||
1176 | static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring, | |
1177 | u64 sts_data0) | |
1178 | { | |
1179 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1180 | struct sk_buff *skb; | |
1181 | struct qlcnic_host_rds_ring *rds_ring; | |
1182 | int index, length, cksum, pkt_offset; | |
1183 | ||
1184 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1185 | return; | |
1186 | ||
1187 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1188 | ||
1189 | index = qlcnic_get_sts_refhandle(sts_data0); | |
1190 | length = qlcnic_get_sts_totallength(sts_data0); | |
1191 | if (unlikely(index >= rds_ring->num_desc)) | |
1192 | return; | |
1193 | ||
1194 | cksum = qlcnic_get_sts_status(sts_data0); | |
1195 | pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); | |
1196 | ||
1197 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1198 | if (!skb) | |
1199 | return; | |
1200 | ||
1201 | if (length > rds_ring->skb_size) | |
1202 | skb_put(skb, rds_ring->skb_size); | |
1203 | else | |
1204 | skb_put(skb, length); | |
1205 | ||
1206 | if (pkt_offset) | |
1207 | skb_pull(skb, pkt_offset); | |
1208 | ||
1209 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
79788450 | 1210 | adapter->ahw->diag_cnt++; |
c70001a9 SC |
1211 | else |
1212 | dump_skb(skb, adapter); | |
1213 | ||
1214 | dev_kfree_skb_any(skb); | |
1215 | adapter->stats.rx_pkts++; | |
1216 | adapter->stats.rxbytes += length; | |
1217 | ||
1218 | return; | |
1219 | } | |
1220 | ||
7e2cf4fe | 1221 | void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
c70001a9 SC |
1222 | { |
1223 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1224 | struct status_desc *desc; | |
1225 | u64 sts_data0; | |
1226 | int ring, opcode, desc_cnt; | |
1227 | ||
1228 | u32 consumer = sds_ring->consumer; | |
1229 | ||
1230 | desc = &sds_ring->desc_head[consumer]; | |
1231 | sts_data0 = le64_to_cpu(desc->status_desc_data[0]); | |
1232 | ||
1233 | if (!(sts_data0 & STATUS_OWNER_HOST)) | |
1234 | return; | |
1235 | ||
1236 | desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); | |
1237 | opcode = qlcnic_get_sts_opcode(sts_data0); | |
1238 | switch (opcode) { | |
1239 | case QLCNIC_RESPONSE_DESC: | |
1240 | qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); | |
1241 | break; | |
1242 | default: | |
1243 | ring = qlcnic_get_sts_type(sts_data0); | |
1244 | qlcnic_process_rcv_diag(adapter, ring, sts_data0); | |
1245 | break; | |
1246 | } | |
1247 | ||
1248 | for (; desc_cnt > 0; desc_cnt--) { | |
1249 | desc = &sds_ring->desc_head[consumer]; | |
1250 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
1251 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1252 | } | |
1253 | ||
1254 | sds_ring->consumer = consumer; | |
1255 | writel(consumer, sds_ring->crb_sts_consumer); | |
1256 | } | |
1257 | ||
7e2cf4fe SC |
1258 | int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
1259 | struct net_device *netdev) | |
c70001a9 | 1260 | { |
d17dd0d9 | 1261 | int ring, max_sds_rings; |
c70001a9 SC |
1262 | struct qlcnic_host_sds_ring *sds_ring; |
1263 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1264 | ||
1265 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) | |
1266 | return -ENOMEM; | |
1267 | ||
d17dd0d9 SC |
1268 | max_sds_rings = adapter->max_sds_rings; |
1269 | ||
c70001a9 SC |
1270 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { |
1271 | sds_ring = &recv_ctx->sds_rings[ring]; | |
4be41e92 | 1272 | if (ring == adapter->max_sds_rings - 1) |
c70001a9 | 1273 | netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll, |
d17dd0d9 | 1274 | QLCNIC_NETDEV_WEIGHT / max_sds_rings); |
c70001a9 | 1275 | else |
d17dd0d9 SC |
1276 | netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll, |
1277 | QLCNIC_NETDEV_WEIGHT*2); | |
c70001a9 SC |
1278 | } |
1279 | ||
4be41e92 SC |
1280 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
1281 | qlcnic_free_sds_rings(recv_ctx); | |
1282 | return -ENOMEM; | |
1283 | } | |
1284 | ||
c70001a9 SC |
1285 | return 0; |
1286 | } | |
1287 | ||
4be41e92 | 1288 | void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1289 | { |
1290 | int ring; | |
1291 | struct qlcnic_host_sds_ring *sds_ring; | |
1292 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1293 | ||
1294 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1295 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1296 | netif_napi_del(&sds_ring->napi); | |
1297 | } | |
1298 | ||
1299 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
4be41e92 | 1300 | qlcnic_free_tx_rings(adapter); |
c70001a9 SC |
1301 | } |
1302 | ||
7e2cf4fe | 1303 | void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1304 | { |
1305 | int ring; | |
1306 | struct qlcnic_host_sds_ring *sds_ring; | |
1307 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1308 | ||
1309 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1310 | return; | |
1311 | ||
1312 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1313 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1314 | napi_enable(&sds_ring->napi); | |
1315 | qlcnic_enable_int(sds_ring); | |
1316 | } | |
1317 | } | |
1318 | ||
7e2cf4fe | 1319 | void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter) |
c70001a9 SC |
1320 | { |
1321 | int ring; | |
1322 | struct qlcnic_host_sds_ring *sds_ring; | |
1323 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1324 | ||
1325 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1326 | return; | |
1327 | ||
1328 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1329 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1330 | qlcnic_disable_int(sds_ring); | |
1331 | napi_synchronize(&sds_ring->napi); | |
1332 | napi_disable(&sds_ring->napi); | |
1333 | } | |
1334 | } | |
4be41e92 SC |
1335 | |
1336 | static struct qlcnic_rx_buffer * | |
1337 | qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter, | |
1338 | struct qlcnic_host_sds_ring *sds_ring, | |
1339 | u8 ring, u64 sts_data[]) | |
1340 | { | |
1341 | struct net_device *netdev = adapter->netdev; | |
1342 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1343 | struct qlcnic_rx_buffer *buffer; | |
1344 | struct sk_buff *skb; | |
1345 | struct qlcnic_host_rds_ring *rds_ring; | |
1346 | int index, length, cksum; | |
1347 | u16 vid = 0xffff; | |
1348 | ||
1349 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1350 | return NULL; | |
1351 | ||
1352 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1353 | ||
1354 | index = qlcnic_83xx_hndl(sts_data[0]); | |
1355 | if (unlikely(index >= rds_ring->num_desc)) | |
1356 | return NULL; | |
1357 | ||
1358 | buffer = &rds_ring->rx_buf_arr[index]; | |
1359 | length = qlcnic_83xx_pktln(sts_data[0]); | |
1360 | cksum = qlcnic_83xx_csum_status(sts_data[1]); | |
1361 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); | |
1362 | if (!skb) | |
1363 | return buffer; | |
1364 | ||
1365 | if (length > rds_ring->skb_size) | |
1366 | skb_put(skb, rds_ring->skb_size); | |
1367 | else | |
1368 | skb_put(skb, length); | |
1369 | ||
1370 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1371 | adapter->stats.rxdropped++; | |
1372 | dev_kfree_skb(skb); | |
1373 | return buffer; | |
1374 | } | |
1375 | ||
1376 | skb->protocol = eth_type_trans(skb, netdev); | |
1377 | ||
1378 | if (vid != 0xffff) | |
1379 | __vlan_hwaccel_put_tag(skb, vid); | |
1380 | ||
1381 | napi_gro_receive(&sds_ring->napi, skb); | |
1382 | ||
1383 | adapter->stats.rx_pkts++; | |
1384 | adapter->stats.rxbytes += length; | |
1385 | ||
1386 | return buffer; | |
1387 | } | |
1388 | ||
1389 | static struct qlcnic_rx_buffer * | |
1390 | qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, | |
1391 | u8 ring, u64 sts_data[]) | |
1392 | { | |
1393 | struct net_device *netdev = adapter->netdev; | |
1394 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1395 | struct qlcnic_rx_buffer *buffer; | |
1396 | struct sk_buff *skb; | |
1397 | struct qlcnic_host_rds_ring *rds_ring; | |
1398 | struct iphdr *iph; | |
1399 | struct ipv6hdr *ipv6h; | |
1400 | struct tcphdr *th; | |
1401 | bool push; | |
1402 | int l2_hdr_offset, l4_hdr_offset; | |
1403 | int index; | |
1404 | u16 lro_length, length, data_offset; | |
1405 | u16 vid = 0xffff; | |
1406 | ||
1407 | if (unlikely(ring > adapter->max_rds_rings)) | |
1408 | return NULL; | |
1409 | ||
1410 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1411 | ||
1412 | index = qlcnic_83xx_hndl(sts_data[0]); | |
1413 | if (unlikely(index > rds_ring->num_desc)) | |
1414 | return NULL; | |
1415 | ||
1416 | buffer = &rds_ring->rx_buf_arr[index]; | |
1417 | ||
1418 | lro_length = qlcnic_83xx_lro_pktln(sts_data[0]); | |
1419 | l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]); | |
1420 | l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]); | |
1421 | push = qlcnic_83xx_is_psh_bit(sts_data[1]); | |
1422 | ||
1423 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1424 | if (!skb) | |
1425 | return buffer; | |
1426 | if (qlcnic_83xx_is_tstamp(sts_data[1])) | |
1427 | data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE; | |
1428 | else | |
1429 | data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE; | |
1430 | ||
1431 | skb_put(skb, lro_length + data_offset); | |
1432 | skb_pull(skb, l2_hdr_offset); | |
1433 | ||
1434 | if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) { | |
1435 | adapter->stats.rxdropped++; | |
1436 | dev_kfree_skb(skb); | |
1437 | return buffer; | |
1438 | } | |
1439 | ||
1440 | skb->protocol = eth_type_trans(skb, netdev); | |
1441 | if (ntohs(skb->protocol) == ETH_P_IPV6) { | |
1442 | ipv6h = (struct ipv6hdr *)skb->data; | |
1443 | th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); | |
1444 | ||
1445 | length = (th->doff << 2) + lro_length; | |
1446 | ipv6h->payload_len = htons(length); | |
1447 | } else { | |
1448 | iph = (struct iphdr *)skb->data; | |
1449 | th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); | |
1450 | length = (iph->ihl << 2) + (th->doff << 2) + lro_length; | |
1451 | iph->tot_len = htons(length); | |
1452 | iph->check = 0; | |
1453 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
1454 | } | |
1455 | ||
1456 | th->psh = push; | |
1457 | length = skb->len; | |
1458 | ||
1459 | if (vid != 0xffff) | |
1460 | __vlan_hwaccel_put_tag(skb, vid); | |
1461 | ||
1462 | netif_receive_skb(skb); | |
1463 | ||
1464 | adapter->stats.lro_pkts++; | |
1465 | adapter->stats.lrobytes += length; | |
1466 | return buffer; | |
1467 | } | |
1468 | ||
1469 | static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, | |
1470 | int max) | |
1471 | { | |
1472 | struct qlcnic_host_rds_ring *rds_ring; | |
1473 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1474 | struct list_head *cur; | |
1475 | struct status_desc *desc; | |
1476 | struct qlcnic_rx_buffer *rxbuf = NULL; | |
1477 | u8 ring; | |
1478 | u64 sts_data[2]; | |
1479 | int count = 0, opcode; | |
1480 | u32 consumer = sds_ring->consumer; | |
1481 | ||
1482 | while (count < max) { | |
1483 | desc = &sds_ring->desc_head[consumer]; | |
1484 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
1485 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
1486 | if (!opcode) | |
1487 | break; | |
1488 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
1489 | ring = QLCNIC_FETCH_RING_ID(sts_data[0]); | |
1490 | ||
1491 | switch (opcode) { | |
1492 | case QLC_83XX_REG_DESC: | |
1493 | rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring, | |
1494 | ring, sts_data); | |
1495 | break; | |
1496 | case QLC_83XX_LRO_DESC: | |
1497 | rxbuf = qlcnic_83xx_process_lro(adapter, ring, | |
1498 | sts_data); | |
1499 | break; | |
1500 | default: | |
1501 | dev_info(&adapter->pdev->dev, | |
1502 | "Unkonwn opcode: 0x%x\n", opcode); | |
1503 | goto skip; | |
1504 | } | |
1505 | ||
1506 | if (likely(rxbuf)) | |
1507 | list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); | |
1508 | else | |
1509 | adapter->stats.null_rxbuf++; | |
1510 | skip: | |
1511 | desc = &sds_ring->desc_head[consumer]; | |
1512 | /* Reset the descriptor */ | |
1513 | desc->status_desc_data[1] = 0; | |
1514 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1515 | count++; | |
1516 | } | |
1517 | for (ring = 0; ring < adapter->max_rds_rings; ring++) { | |
1518 | rds_ring = &adapter->recv_ctx->rds_rings[ring]; | |
1519 | if (!list_empty(&sds_ring->free_list[ring])) { | |
1520 | list_for_each(cur, &sds_ring->free_list[ring]) { | |
1521 | rxbuf = list_entry(cur, struct qlcnic_rx_buffer, | |
1522 | list); | |
1523 | qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); | |
1524 | } | |
1525 | spin_lock(&rds_ring->lock); | |
1526 | list_splice_tail_init(&sds_ring->free_list[ring], | |
1527 | &rds_ring->free_list); | |
1528 | spin_unlock(&rds_ring->lock); | |
1529 | } | |
1530 | qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring); | |
1531 | } | |
1532 | if (count) { | |
1533 | sds_ring->consumer = consumer; | |
1534 | writel(consumer, sds_ring->crb_sts_consumer); | |
1535 | } | |
1536 | return count; | |
1537 | } | |
1538 | ||
1539 | static int qlcnic_83xx_poll(struct napi_struct *napi, int budget) | |
1540 | { | |
1541 | int tx_complete; | |
1542 | int work_done; | |
1543 | struct qlcnic_host_sds_ring *sds_ring; | |
1544 | struct qlcnic_adapter *adapter; | |
1545 | struct qlcnic_host_tx_ring *tx_ring; | |
1546 | ||
1547 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1548 | adapter = sds_ring->adapter; | |
1549 | /* tx ring count = 1 */ | |
1550 | tx_ring = adapter->tx_ring; | |
1551 | ||
1552 | if (!(adapter->flags & QLCNIC_MSIX_ENABLED)) | |
1553 | qlcnic_83xx_process_aen(adapter); | |
1554 | ||
1555 | tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
1556 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
1557 | if ((work_done < budget) && tx_complete) { | |
1558 | napi_complete(&sds_ring->napi); | |
1559 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
1560 | qlcnic_83xx_enable_intr(adapter, sds_ring); | |
1561 | } | |
1562 | ||
1563 | return work_done; | |
1564 | } | |
1565 | ||
1566 | static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget) | |
1567 | { | |
1568 | int work_done; | |
1569 | struct qlcnic_host_tx_ring *tx_ring; | |
1570 | struct qlcnic_adapter *adapter; | |
1571 | ||
1572 | budget = QLCNIC_TX_POLL_BUDGET; | |
1573 | tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); | |
1574 | adapter = tx_ring->adapter; | |
1575 | work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); | |
1576 | if (work_done) { | |
1577 | napi_complete(&tx_ring->napi); | |
1578 | if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) | |
1579 | qlcnic_83xx_enable_tx_intr(adapter, tx_ring); | |
1580 | } | |
1581 | ||
1582 | return work_done; | |
1583 | } | |
1584 | ||
1585 | static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget) | |
1586 | { | |
1587 | int work_done; | |
1588 | struct qlcnic_host_sds_ring *sds_ring; | |
1589 | struct qlcnic_adapter *adapter; | |
1590 | ||
1591 | sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); | |
1592 | adapter = sds_ring->adapter; | |
1593 | work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); | |
1594 | if (work_done < budget) { | |
1595 | napi_complete(&sds_ring->napi); | |
1596 | if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) | |
1597 | qlcnic_83xx_enable_intr(adapter, sds_ring); | |
1598 | } | |
1599 | ||
1600 | return work_done; | |
1601 | } | |
1602 | ||
1603 | void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter) | |
1604 | { | |
1605 | int ring; | |
1606 | struct qlcnic_host_sds_ring *sds_ring; | |
1607 | struct qlcnic_host_tx_ring *tx_ring; | |
1608 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1609 | ||
1610 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1611 | return; | |
1612 | ||
1613 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1614 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1615 | napi_enable(&sds_ring->napi); | |
1616 | qlcnic_83xx_enable_intr(adapter, sds_ring); | |
1617 | } | |
1618 | ||
1619 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { | |
1620 | for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { | |
1621 | tx_ring = &adapter->tx_ring[ring]; | |
1622 | napi_enable(&tx_ring->napi); | |
1623 | qlcnic_83xx_enable_tx_intr(adapter, tx_ring); | |
1624 | } | |
1625 | } | |
1626 | } | |
1627 | ||
1628 | void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter) | |
1629 | { | |
1630 | int ring; | |
1631 | struct qlcnic_host_sds_ring *sds_ring; | |
1632 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1633 | struct qlcnic_host_tx_ring *tx_ring; | |
1634 | ||
1635 | if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) | |
1636 | return; | |
1637 | ||
1638 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1639 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1640 | writel(1, sds_ring->crb_intr_mask); | |
1641 | napi_synchronize(&sds_ring->napi); | |
1642 | napi_disable(&sds_ring->napi); | |
1643 | } | |
1644 | ||
1645 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { | |
1646 | for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { | |
1647 | tx_ring = &adapter->tx_ring[ring]; | |
1648 | qlcnic_83xx_disable_tx_intr(adapter, tx_ring); | |
1649 | napi_synchronize(&tx_ring->napi); | |
1650 | napi_disable(&tx_ring->napi); | |
1651 | } | |
1652 | } | |
1653 | } | |
1654 | ||
1655 | int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, | |
1656 | struct net_device *netdev) | |
1657 | { | |
1658 | int ring, max_sds_rings; | |
1659 | struct qlcnic_host_sds_ring *sds_ring; | |
1660 | struct qlcnic_host_tx_ring *tx_ring; | |
1661 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1662 | ||
1663 | if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) | |
1664 | return -ENOMEM; | |
1665 | ||
1666 | max_sds_rings = adapter->max_sds_rings; | |
1667 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1668 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1669 | if (adapter->flags & QLCNIC_MSIX_ENABLED) | |
1670 | netif_napi_add(netdev, &sds_ring->napi, | |
1671 | qlcnic_83xx_rx_poll, | |
1672 | QLCNIC_NETDEV_WEIGHT * 2); | |
1673 | else | |
1674 | netif_napi_add(netdev, &sds_ring->napi, | |
1675 | qlcnic_83xx_poll, | |
1676 | QLCNIC_NETDEV_WEIGHT / max_sds_rings); | |
1677 | } | |
1678 | ||
1679 | if (qlcnic_alloc_tx_rings(adapter, netdev)) { | |
1680 | qlcnic_free_sds_rings(recv_ctx); | |
1681 | return -ENOMEM; | |
1682 | } | |
1683 | ||
1684 | if (adapter->flags & QLCNIC_MSIX_ENABLED) { | |
1685 | for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { | |
1686 | tx_ring = &adapter->tx_ring[ring]; | |
1687 | netif_napi_add(netdev, &tx_ring->napi, | |
1688 | qlcnic_83xx_msix_tx_poll, | |
1689 | QLCNIC_NETDEV_WEIGHT); | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return 0; | |
1694 | } | |
1695 | ||
1696 | void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) | |
1697 | { | |
1698 | int ring; | |
1699 | struct qlcnic_host_sds_ring *sds_ring; | |
1700 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1701 | struct qlcnic_host_tx_ring *tx_ring; | |
1702 | ||
1703 | for (ring = 0; ring < adapter->max_sds_rings; ring++) { | |
1704 | sds_ring = &recv_ctx->sds_rings[ring]; | |
1705 | netif_napi_del(&sds_ring->napi); | |
1706 | } | |
1707 | ||
1708 | qlcnic_free_sds_rings(adapter->recv_ctx); | |
1709 | ||
1710 | if ((adapter->flags & QLCNIC_MSIX_ENABLED)) { | |
1711 | for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { | |
1712 | tx_ring = &adapter->tx_ring[ring]; | |
1713 | netif_napi_del(&tx_ring->napi); | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | qlcnic_free_tx_rings(adapter); | |
1718 | } | |
1719 | ||
1720 | void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, | |
1721 | int ring, u64 sts_data[]) | |
1722 | { | |
1723 | struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; | |
1724 | struct sk_buff *skb; | |
1725 | struct qlcnic_host_rds_ring *rds_ring; | |
1726 | int index, length; | |
1727 | ||
1728 | if (unlikely(ring >= adapter->max_rds_rings)) | |
1729 | return; | |
1730 | ||
1731 | rds_ring = &recv_ctx->rds_rings[ring]; | |
1732 | index = qlcnic_83xx_hndl(sts_data[0]); | |
1733 | if (unlikely(index >= rds_ring->num_desc)) | |
1734 | return; | |
1735 | ||
1736 | length = qlcnic_83xx_pktln(sts_data[0]); | |
1737 | ||
1738 | skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); | |
1739 | if (!skb) | |
1740 | return; | |
1741 | ||
1742 | if (length > rds_ring->skb_size) | |
1743 | skb_put(skb, rds_ring->skb_size); | |
1744 | else | |
1745 | skb_put(skb, length); | |
1746 | ||
1747 | if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) | |
1748 | adapter->ahw->diag_cnt++; | |
1749 | else | |
1750 | dump_skb(skb, adapter); | |
1751 | ||
1752 | dev_kfree_skb_any(skb); | |
1753 | return; | |
1754 | } | |
1755 | ||
1756 | void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) | |
1757 | { | |
1758 | struct qlcnic_adapter *adapter = sds_ring->adapter; | |
1759 | struct status_desc *desc; | |
1760 | u64 sts_data[2]; | |
1761 | int ring, opcode; | |
1762 | u32 consumer = sds_ring->consumer; | |
1763 | ||
1764 | desc = &sds_ring->desc_head[consumer]; | |
1765 | sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); | |
1766 | sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); | |
1767 | opcode = qlcnic_83xx_opcode(sts_data[1]); | |
1768 | if (!opcode) | |
1769 | return; | |
1770 | ||
1771 | ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0])); | |
1772 | qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); | |
1773 | desc = &sds_ring->desc_head[consumer]; | |
1774 | desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); | |
1775 | consumer = get_next_index(consumer, sds_ring->num_desc); | |
1776 | sds_ring->consumer = consumer; | |
1777 | writel(consumer, sds_ring->crb_sts_consumer); | |
1778 | } |