1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 *
4 * Copyright (c) 2011, Microsoft Corporation.
5 *
6 * Authors:
7 * Haiyang Zhang <haiyangz@microsoft.com>
8 * Hank Janssen <hjanssen@microsoft.com>
9 * K. Y. Srinivasan <kys@microsoft.com>
10 */
11
12 #ifndef _HYPERV_NET_H
13 #define _HYPERV_NET_H
14
15 #include <linux/list.h>
16 #include <linux/hyperv.h>
17 #include <linux/rndis.h>
18 #include <linux/jhash.h>
19 #include <net/xdp.h>
20
21 /* RSS related */
22 #define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */
23 #define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */
24
25 #define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
26 #define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
27 #define NDIS_OBJECT_TYPE_OFFLOAD 0xa7
28
29 #define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
30 #define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
31
32 struct ndis_obj_header {
33 u8 type;
34 u8 rev;
35 u16 size;
36 } __packed;
37
38 /* ndis_recv_scale_cap/cap_flag */
39 #define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
40 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR 0x02000000
41 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC 0x04000000
42 #define NDIS_RSS_CAPS_USING_MSI_X 0x08000000
43 #define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS 0x10000000
44 #define NDIS_RSS_CAPS_SUPPORTS_MSI_X 0x20000000
45 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4 0x00000100
46 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6 0x00000200
47 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX 0x00000400
48
49 struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
50 struct ndis_obj_header hdr;
51 u32 cap_flag;
52 u32 num_int_msg;
53 u32 num_recv_que;
54 u16 num_indirect_tabent;
55 } __packed;
56
57
58 /* ndis_recv_scale_param flags */
59 #define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED 0x0001
60 #define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED 0x0002
61 #define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED 0x0004
62 #define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED 0x0008
63 #define NDIS_RSS_PARAM_FLAG_DISABLE_RSS 0x0010
64
65 /* Hash info bits */
66 #define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
67 #define NDIS_HASH_IPV4 0x00000100
68 #define NDIS_HASH_TCP_IPV4 0x00000200
69 #define NDIS_HASH_IPV6 0x00000400
70 #define NDIS_HASH_IPV6_EX 0x00000800
71 #define NDIS_HASH_TCP_IPV6 0x00001000
72 #define NDIS_HASH_TCP_IPV6_EX 0x00002000
73
74 #define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
75 #define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 40
76
77 #define ITAB_NUM 128
78 #define ITAB_NUM_MAX 256
79
80 struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
81 struct ndis_obj_header hdr;
82
83 /* Qualifies the rest of the information */
84 u16 flag;
85
86 /* The base CPU number to do receive processing. not used */
87 u16 base_cpu_number;
88
89 /* This describes the hash function and type being enabled */
90 u32 hashinfo;
91
92 /* The size of indirection table array */
93 u16 indirect_tabsize;
94
95 /* The offset of the indirection table from the beginning of this
96 * structure
97 */
98 u32 indirect_taboffset;
99
100 /* The size of the hash secret key */
101 u16 hashkey_size;
102
103 /* The offset of the secret key from the beginning of this structure */
104 u32 hashkey_offset;
105
106 u32 processor_masks_offset;
107 u32 num_processor_masks;
108 u32 processor_masks_entry_size;
109 };
110
111 struct ndis_tcp_ip_checksum_info {
112 union {
113 struct {
114 u32 is_ipv4:1;
115 u32 is_ipv6:1;
116 u32 tcp_checksum:1;
117 u32 udp_checksum:1;
118 u32 ip_header_checksum:1;
119 u32 reserved:11;
120 u32 tcp_header_offset:10;
121 } transmit;
122 struct {
123 u32 tcp_checksum_failed:1;
124 u32 udp_checksum_failed:1;
125 u32 ip_checksum_failed:1;
126 u32 tcp_checksum_succeeded:1;
127 u32 udp_checksum_succeeded:1;
128 u32 ip_checksum_succeeded:1;
129 u32 loopback:1;
130 u32 tcp_checksum_value_invalid:1;
131 u32 ip_checksum_value_invalid:1;
132 } receive;
133 u32 value;
134 };
135 };
136
137 struct ndis_pkt_8021q_info {
138 union {
139 struct {
140 u32 pri:3; /* User Priority */
141 u32 cfi:1; /* Canonical Format ID */
142 u32 vlanid:12; /* VLAN ID */
143 u32 reserved:16;
144 };
145 u32 value;
146 };
147 };
148
149 /*
150 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
151 * within the RNDIS
152 *
153 * The size of this structure is less than 48 bytes and we can now
154 * place this structure in the skb->cb field.
155 */
156 struct hv_netvsc_packet {
157 /* Bookkeeping stuff */
158 u8 cp_partial; /* partial copy into send buffer */
159
160 u8 rmsg_size; /* RNDIS header and PPI size */
161 u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
162 u8 page_buf_cnt;
163
164 u16 q_idx;
165 u16 total_packets;
166
167 u32 total_bytes;
168 u32 send_buf_index;
169 u32 total_data_buflen;
170 struct hv_dma_range *dma_range;
171 };
172
173 #define NETVSC_HASH_KEYLEN 40
174
175 struct netvsc_device_info {
176 unsigned char mac_adr[ETH_ALEN];
177 u32 num_chn;
178 u32 send_sections;
179 u32 recv_sections;
180 u32 send_section_size;
181 u32 recv_section_size;
182
183 struct bpf_prog *bprog;
184
185 u8 rss_key[NETVSC_HASH_KEYLEN];
186 };
187
188 enum rndis_device_state {
189 RNDIS_DEV_UNINITIALIZED = 0,
190 RNDIS_DEV_INITIALIZING,
191 RNDIS_DEV_INITIALIZED,
192 RNDIS_DEV_DATAINITIALIZED,
193 };
194
195 struct rndis_device {
196 struct net_device *ndev;
197
198 enum rndis_device_state state;
199
200 atomic_t new_req_id;
201
202 spinlock_t request_lock;
203 struct list_head req_list;
204
205 struct work_struct mcast_work;
206 u32 filter;
207
208 bool link_state; /* 0 - link up, 1 - link down */
209
210 u8 hw_mac_adr[ETH_ALEN];
211 u8 rss_key[NETVSC_HASH_KEYLEN];
212 };
213
214
215 /* Interface */
216 struct rndis_message;
217 struct ndis_offload_params;
218 struct netvsc_device;
219 struct netvsc_channel;
220 struct net_device_context;
221
222 extern u32 netvsc_ring_bytes;
223
224 struct netvsc_device *netvsc_device_add(struct hv_device *device,
225 const struct netvsc_device_info *info);
226 int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
227 void netvsc_device_remove(struct hv_device *device);
228 int netvsc_send(struct net_device *net,
229 struct hv_netvsc_packet *packet,
230 struct rndis_message *rndis_msg,
231 struct hv_page_buffer *page_buffer,
232 struct sk_buff *skb,
233 bool xdp_tx);
234 void netvsc_linkstatus_callback(struct net_device *net,
235 struct rndis_message *resp,
236 void *data, u32 data_buflen);
237 int netvsc_recv_callback(struct net_device *net,
238 struct netvsc_device *nvdev,
239 struct netvsc_channel *nvchan);
240 void netvsc_channel_cb(void *context);
241 int netvsc_poll(struct napi_struct *napi, int budget);
242
243 void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev);
244 u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
245 struct xdp_buff *xdp);
246 unsigned int netvsc_xdp_fraglen(unsigned int len);
247 struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev);
248 int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog,
249 struct netlink_ext_ack *extack,
250 struct netvsc_device *nvdev);
251 int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog);
252 int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf);
253 int netvsc_ndoxdp_xmit(struct net_device *ndev, int n,
254 struct xdp_frame **frames, u32 flags);
255
256 int rndis_set_subchannel(struct net_device *ndev,
257 struct netvsc_device *nvdev,
258 struct netvsc_device_info *dev_info);
259 int rndis_filter_open(struct netvsc_device *nvdev);
260 int rndis_filter_close(struct netvsc_device *nvdev);
261 struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
262 struct netvsc_device_info *info);
263 void rndis_filter_update(struct netvsc_device *nvdev);
264 void rndis_filter_device_remove(struct hv_device *dev,
265 struct netvsc_device *nvdev);
266 int rndis_filter_set_rss_param(struct rndis_device *rdev,
267 const u8 *key);
268 int rndis_filter_set_offload_params(struct net_device *ndev,
269 struct netvsc_device *nvdev,
270 struct ndis_offload_params *req_offloads);
271 int rndis_filter_receive(struct net_device *ndev,
272 struct netvsc_device *net_dev,
273 struct netvsc_channel *nvchan,
274 void *data, u32 buflen);
275
276 int rndis_filter_set_device_mac(struct netvsc_device *ndev,
277 const char *mac);
278
279 int netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
280
281 #define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
282
283 #define NVSP_PROTOCOL_VERSION_1 2
284 #define NVSP_PROTOCOL_VERSION_2 0x30002
285 #define NVSP_PROTOCOL_VERSION_4 0x40000
286 #define NVSP_PROTOCOL_VERSION_5 0x50000
287 #define NVSP_PROTOCOL_VERSION_6 0x60000
288 #define NVSP_PROTOCOL_VERSION_61 0x60001
289
290 enum {
291 NVSP_MSG_TYPE_NONE = 0,
292
293 /* Init Messages */
294 NVSP_MSG_TYPE_INIT = 1,
295 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
296
297 NVSP_VERSION_MSG_START = 100,
298
299 /* Version 1 Messages */
300 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
301
302 NVSP_MSG1_TYPE_SEND_RECV_BUF,
303 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
304 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
305
306 NVSP_MSG1_TYPE_SEND_SEND_BUF,
307 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
308 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
309
310 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
311 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
312
313 /* Version 2 messages */
314 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
315 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
316 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
317
318 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
319
320 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
321 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
322
323 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
324
325 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
326 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
327
328 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
329 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
330
331 NVSP_MSG2_TYPE_ALLOC_RXBUF,
332 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
333
334 NVSP_MSG2_TYPE_FREE_RXBUF,
335
336 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
337 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
338
339 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
340
341 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
342 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
343
344 NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
345
346 /* Version 4 messages */
347 NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
348 NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
349 NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
350
351 NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
352
353 /* Version 5 messages */
354 NVSP_MSG5_TYPE_OID_QUERY_EX,
355 NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
356 NVSP_MSG5_TYPE_SUBCHANNEL,
357 NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
358
359 NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
360
361 /* Version 6 messages */
362 NVSP_MSG6_TYPE_PD_API,
363 NVSP_MSG6_TYPE_PD_POST_BATCH,
364
365 NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
366 };
367
368 enum {
369 NVSP_STAT_NONE = 0,
370 NVSP_STAT_SUCCESS,
371 NVSP_STAT_FAIL,
372 NVSP_STAT_PROTOCOL_TOO_NEW,
373 NVSP_STAT_PROTOCOL_TOO_OLD,
374 NVSP_STAT_INVALID_RNDIS_PKT,
375 NVSP_STAT_BUSY,
376 NVSP_STAT_PROTOCOL_UNSUPPORTED,
377 NVSP_STAT_MAX,
378 };
379
380 struct nvsp_message_header {
381 u32 msg_type;
382 };
383
384 /* Init Messages */
385
386 /*
387 * This message is used by the VSC to initialize the channel after the channels
388 * has been opened. This message should never include anything other then
389 * versioning (i.e. this message will be the same for ever).
390 */
391 struct nvsp_message_init {
392 u32 min_protocol_ver;
393 u32 max_protocol_ver;
394 } __packed;
395
396 /*
397 * This message is used by the VSP to complete the initialization of the
398 * channel. This message should never include anything other then versioning
399 * (i.e. this message will be the same for ever).
400 */
401 struct nvsp_message_init_complete {
402 u32 negotiated_protocol_ver;
403 u32 max_mdl_chain_len;
404 u32 status;
405 } __packed;
406
407 union nvsp_message_init_uber {
408 struct nvsp_message_init init;
409 struct nvsp_message_init_complete init_complete;
410 } __packed;
411
412 /* Version 1 Messages */
413
414 /*
415 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
416 * can use this information when handling OIDs sent by the VSC.
417 */
418 struct nvsp_1_message_send_ndis_version {
419 u32 ndis_major_ver;
420 u32 ndis_minor_ver;
421 } __packed;
422
423 /*
424 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
425 * can then use the receive buffer to send data to the VSC.
426 */
427 struct nvsp_1_message_send_receive_buffer {
428 u32 gpadl_handle;
429 u16 id;
430 } __packed;
431
432 struct nvsp_1_receive_buffer_section {
433 u32 offset;
434 u32 sub_alloc_size;
435 u32 num_sub_allocs;
436 u32 end_offset;
437 } __packed;
438
439 /*
440 * This message is used by the VSP to acknowledge a receive buffer send by the
441 * VSC. This message must be sent by the VSP before the VSP uses the receive
442 * buffer.
443 */
444 struct nvsp_1_message_send_receive_buffer_complete {
445 u32 status;
446 u32 num_sections;
447
448 /*
449 * The receive buffer is split into two parts, a large suballocation
450 * section and a small suballocation section. These sections are then
451 * suballocated by a certain size.
452 */
453
454 /*
455 * For example, the following break up of the receive buffer has 6
456 * large suballocations and 10 small suballocations.
457 */
458
459 /*
460 * | Large Section | | Small Section |
461 * ------------------------------------------------------------
462 * | | | | | | | | | | | | | | | | | |
463 * | |
464 * LargeOffset SmallOffset
465 */
466
467 struct nvsp_1_receive_buffer_section sections[];
468 } __packed;
469
470 /*
471 * This message is sent by the VSC to revoke the receive buffer. After the VSP
472 * completes this transaction, the vsp should never use the receive buffer
473 * again.
474 */
475 struct nvsp_1_message_revoke_receive_buffer {
476 u16 id;
477 };
478
479 /*
480 * This message is used by the VSC to send a send buffer to the VSP. The VSC
481 * can then use the send buffer to send data to the VSP.
482 */
483 struct nvsp_1_message_send_send_buffer {
484 u32 gpadl_handle;
485 u16 id;
486 } __packed;
487
488 /*
489 * This message is used by the VSP to acknowledge a send buffer sent by the
490 * VSC. This message must be sent by the VSP before the VSP uses the sent
491 * buffer.
492 */
493 struct nvsp_1_message_send_send_buffer_complete {
494 u32 status;
495
496 /*
497 * The VSC gets to choose the size of the send buffer and the VSP gets
498 * to choose the sections size of the buffer. This was done to enable
499 * dynamic reconfigurations when the cost of GPA-direct buffers
500 * decreases.
501 */
502 u32 section_size;
503 } __packed;
504
505 /*
506 * This message is sent by the VSC to revoke the send buffer. After the VSP
507 * completes this transaction, the vsp should never use the send buffer again.
508 */
509 struct nvsp_1_message_revoke_send_buffer {
510 u16 id;
511 };
512
513 /*
514 * This message is used by both the VSP and the VSC to send a RNDIS message to
515 * the opposite channel endpoint.
516 */
517 struct nvsp_1_message_send_rndis_packet {
518 /*
519 * This field is specified by RNDIS. They assume there's two different
520 * channels of communication. However, the Network VSP only has one.
521 * Therefore, the channel travels with the RNDIS packet.
522 */
523 u32 channel_type;
524
525 /*
526 * This field is used to send part or all of the data through a send
527 * buffer. This values specifies an index into the send buffer. If the
528 * index is 0xFFFFFFFF, then the send buffer is not being used and all
529 * of the data was sent through other VMBus mechanisms.
530 */
531 u32 send_buf_section_index;
532 u32 send_buf_section_size;
533 } __packed;
534
535 /*
536 * This message is used by both the VSP and the VSC to complete a RNDIS message
537 * to the opposite channel endpoint. At this point, the initiator of this
538 * message cannot use any resources associated with the original RNDIS packet.
539 */
540 struct nvsp_1_message_send_rndis_packet_complete {
541 u32 status;
542 };
543
544 union nvsp_1_message_uber {
545 struct nvsp_1_message_send_ndis_version send_ndis_ver;
546
547 struct nvsp_1_message_send_receive_buffer send_recv_buf;
548 struct nvsp_1_message_send_receive_buffer_complete
549 send_recv_buf_complete;
550 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
551
552 struct nvsp_1_message_send_send_buffer send_send_buf;
553 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
554 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
555
556 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
557 struct nvsp_1_message_send_rndis_packet_complete
558 send_rndis_pkt_complete;
559 } __packed;
560
561
562 /*
563 * Network VSP protocol version 2 messages:
564 */
565 struct nvsp_2_vsc_capability {
566 union {
567 u64 data;
568 struct {
569 u64 vmq:1;
570 u64 chimney:1;
571 u64 sriov:1;
572 u64 ieee8021q:1;
573 u64 correlation_id:1;
574 u64 teaming:1;
575 u64 vsubnetid:1;
576 u64 rsc:1;
577 };
578 };
579 } __packed;
580
581 struct nvsp_2_send_ndis_config {
582 u32 mtu;
583 u32 reserved;
584 struct nvsp_2_vsc_capability capability;
585 } __packed;
586
587 /* Allocate receive buffer */
588 struct nvsp_2_alloc_rxbuf {
589 /* Allocation ID to match the allocation request and response */
590 u32 alloc_id;
591
592 /* Length of the VM shared memory receive buffer that needs to
593 * be allocated
594 */
595 u32 len;
596 } __packed;
597
598 /* Allocate receive buffer complete */
599 struct nvsp_2_alloc_rxbuf_comp {
600 /* The NDIS_STATUS code for buffer allocation */
601 u32 status;
602
603 u32 alloc_id;
604
605 /* GPADL handle for the allocated receive buffer */
606 u32 gpadl_handle;
607
608 /* Receive buffer ID */
609 u64 recv_buf_id;
610 } __packed;
611
612 struct nvsp_2_free_rxbuf {
613 u64 recv_buf_id;
614 } __packed;
615
616 union nvsp_2_message_uber {
617 struct nvsp_2_send_ndis_config send_ndis_config;
618 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
619 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
620 struct nvsp_2_free_rxbuf free_rxbuf;
621 } __packed;
622
623 struct nvsp_4_send_vf_association {
624 /* 1: allocated, serial number is valid. 0: not allocated */
625 u32 allocated;
626
627 /* Serial number of the VF to team with */
628 u32 serial;
629 } __packed;
630
631 enum nvsp_vm_datapath {
632 NVSP_DATAPATH_SYNTHETIC = 0,
633 NVSP_DATAPATH_VF,
634 NVSP_DATAPATH_MAX
635 };
636
637 struct nvsp_4_sw_datapath {
638 u32 active_datapath; /* active data path in VM */
639 } __packed;
640
641 union nvsp_4_message_uber {
642 struct nvsp_4_send_vf_association vf_assoc;
643 struct nvsp_4_sw_datapath active_dp;
644 } __packed;
645
646 enum nvsp_subchannel_operation {
647 NVSP_SUBCHANNEL_NONE = 0,
648 NVSP_SUBCHANNEL_ALLOCATE,
649 NVSP_SUBCHANNEL_MAX
650 };
651
652 struct nvsp_5_subchannel_request {
653 u32 op;
654 u32 num_subchannels;
655 } __packed;
656
657 struct nvsp_5_subchannel_complete {
658 u32 status;
659 u32 num_subchannels; /* Actual number of subchannels allocated */
660 } __packed;
661
662 struct nvsp_5_send_indirect_table {
663 /* The number of entries in the send indirection table */
664 u32 count;
665
666 /* The offset of the send indirection table from the beginning of
667 * struct nvsp_message.
668 * The send indirection table tells which channel to put the send
669 * traffic on. Each entry is a channel number.
670 */
671 u32 offset;
672 } __packed;
673
674 union nvsp_5_message_uber {
675 struct nvsp_5_subchannel_request subchn_req;
676 struct nvsp_5_subchannel_complete subchn_comp;
677 struct nvsp_5_send_indirect_table send_table;
678 } __packed;
679
680 enum nvsp_6_pd_api_op {
681 PD_API_OP_CONFIG = 1,
682 PD_API_OP_SW_DATAPATH, /* Switch Datapath */
683 PD_API_OP_OPEN_PROVIDER,
684 PD_API_OP_CLOSE_PROVIDER,
685 PD_API_OP_CREATE_QUEUE,
686 PD_API_OP_FLUSH_QUEUE,
687 PD_API_OP_FREE_QUEUE,
688 PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
689 PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
690 PD_API_OP_MAX
691 };
692
693 struct grp_affinity {
694 u64 mask;
695 u16 grp;
696 u16 reserved[3];
697 } __packed;
698
699 struct nvsp_6_pd_api_req {
700 u32 op;
701
702 union {
703 /* MMIO information is sent from the VM to VSP */
704 struct __packed {
705 u64 mmio_pa; /* MMIO Physical Address */
706 u32 mmio_len;
707
708 /* Number of PD queues a VM can support */
709 u16 num_subchn;
710 } config;
711
712 /* Switch Datapath */
713 struct __packed {
714 /* Host Datapath Is PacketDirect */
715 u8 host_dpath_is_pd;
716
717 /* Guest PacketDirect Is Enabled */
718 u8 guest_pd_enabled;
719 } sw_dpath;
720
721 /* Open Provider*/
722 struct __packed {
723 u32 prov_id; /* Provider id */
724 u32 flag;
725 } open_prov;
726
727 /* Close Provider */
728 struct __packed {
729 u32 prov_id;
730 } cls_prov;
731
732 /* Create Queue*/
733 struct __packed {
734 u32 prov_id;
735 u16 q_id;
736 u16 q_size;
737 u8 is_recv_q;
738 u8 is_rss_q;
739 u32 recv_data_len;
740 struct grp_affinity affy;
741 } cr_q;
742
743 /* Delete Queue*/
744 struct __packed {
745 u32 prov_id;
746 u16 q_id;
747 } del_q;
748
749 /* Flush Queue */
750 struct __packed {
751 u32 prov_id;
752 u16 q_id;
753 } flush_q;
754
755 /* Allocate Common Buffer */
756 struct __packed {
757 u32 len;
758 u32 pf_node; /* Preferred Node */
759 u16 region_id;
760 } alloc_com_buf;
761
762 /* Free Common Buffer */
763 struct __packed {
764 u32 len;
765 u64 pa; /* Physical Address */
766 u32 pf_node; /* Preferred Node */
767 u16 region_id;
768 u8 cache_type;
769 } free_com_buf;
770 } __packed;
771 } __packed;
772
773 struct nvsp_6_pd_api_comp {
774 u32 op;
775 u32 status;
776
777 union {
778 struct __packed {
779 /* actual number of PD queues allocated to the VM */
780 u16 num_pd_q;
781
782 /* Num Receive Rss PD Queues */
783 u8 num_rss_q;
784
785 u8 is_supported; /* Is supported by VSP */
786 u8 is_enabled; /* Is enabled by VSP */
787 } config;
788
789 /* Open Provider */
790 struct __packed {
791 u32 prov_id;
792 } open_prov;
793
794 /* Create Queue */
795 struct __packed {
796 u32 prov_id;
797 u16 q_id;
798 u16 q_size;
799 u32 recv_data_len;
800 struct grp_affinity affy;
801 } cr_q;
802
803 /* Allocate Common Buffer */
804 struct __packed {
805 u64 pa; /* Physical Address */
806 u32 len;
807 u32 pf_node; /* Preferred Node */
808 u16 region_id;
809 u8 cache_type;
810 } alloc_com_buf;
811 } __packed;
812 } __packed;
813
814 struct nvsp_6_pd_buf {
815 u32 region_offset;
816 u16 region_id;
817 u16 is_partial:1;
818 u16 reserved:15;
819 } __packed;
820
821 struct nvsp_6_pd_batch_msg {
822 struct nvsp_message_header hdr;
823 u16 count;
824 u16 guest2host:1;
825 u16 is_recv:1;
826 u16 reserved:14;
827 struct nvsp_6_pd_buf pd_buf[0];
828 } __packed;
829
830 union nvsp_6_message_uber {
831 struct nvsp_6_pd_api_req pd_req;
832 struct nvsp_6_pd_api_comp pd_comp;
833 } __packed;
834
835 union nvsp_all_messages {
836 union nvsp_message_init_uber init_msg;
837 union nvsp_1_message_uber v1_msg;
838 union nvsp_2_message_uber v2_msg;
839 union nvsp_4_message_uber v4_msg;
840 union nvsp_5_message_uber v5_msg;
841 union nvsp_6_message_uber v6_msg;
842 } __packed;
843
844 /* ALL Messages */
845 struct nvsp_message {
846 struct nvsp_message_header hdr;
847 union nvsp_all_messages msg;
848 } __packed;
849
850
851 #define NETVSC_MTU 65535
852 #define NETVSC_MTU_MIN ETH_MIN_MTU
853
854 /* Max buffer sizes allowed by a host */
855 #define NETVSC_RECEIVE_BUFFER_SIZE (1024 * 1024 * 31) /* 31MB */
856 #define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024 * 1024 * 15) /* 15MB */
857 #define NETVSC_RECEIVE_BUFFER_DEFAULT (1024 * 1024 * 16)
858
859 #define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
860 #define NETVSC_SEND_BUFFER_DEFAULT (1024 * 1024)
861
862 #define NETVSC_INVALID_INDEX -1
863
864 #define NETVSC_SEND_SECTION_SIZE 6144
865 #define NETVSC_RECV_SECTION_SIZE 1728
866
867 /* Default size of TX buf: 1MB, RX buf: 16MB */
868 #define NETVSC_MIN_TX_SECTIONS 10
869 #define NETVSC_DEFAULT_TX (NETVSC_SEND_BUFFER_DEFAULT \
870 / NETVSC_SEND_SECTION_SIZE)
871 #define NETVSC_MIN_RX_SECTIONS 10
872 #define NETVSC_DEFAULT_RX (NETVSC_RECEIVE_BUFFER_DEFAULT \
873 / NETVSC_RECV_SECTION_SIZE)
874
875 #define NETVSC_RECEIVE_BUFFER_ID 0xcafe
876 #define NETVSC_SEND_BUFFER_ID 0
877
878 #define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
879 NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
880 NETIF_F_TSO6 | NETIF_F_LRO | \
881 NETIF_F_SG | NETIF_F_RXHASH)
882
883 #define VRSS_SEND_TAB_SIZE 16 /* must be power of 2 */
884 #define VRSS_CHANNEL_MAX 64
885 #define VRSS_CHANNEL_DEFAULT 16
886
887 #define RNDIS_MAX_PKT_DEFAULT 8
888 #define RNDIS_PKT_ALIGN_DEFAULT 8
889
890 #define NETVSC_XDP_HDRM 256
891
892 #define NETVSC_MIN_OUT_MSG_SIZE (sizeof(struct vmpacket_descriptor) + \
893 sizeof(struct nvsp_message))
894 #define NETVSC_MIN_IN_MSG_SIZE sizeof(struct vmpacket_descriptor)
895
896 /* Estimated requestor size:
897 * out_ring_size/min_out_msg_size + in_ring_size/min_in_msg_size
898 */
netvsc_rqstor_size(unsigned long ringbytes)899 static inline u32 netvsc_rqstor_size(unsigned long ringbytes)
900 {
901 return ringbytes / NETVSC_MIN_OUT_MSG_SIZE +
902 ringbytes / NETVSC_MIN_IN_MSG_SIZE;
903 }
904
905 /* XFER PAGE packets can specify a maximum of 375 ranges for NDIS >= 6.0
906 * and a maximum of 64 ranges for NDIS < 6.0 with no RSC; with RSC, this
907 * limit is raised to 562 (= NVSP_RSC_MAX).
908 */
909 #define NETVSC_MAX_XFER_PAGE_RANGES NVSP_RSC_MAX
910 #define NETVSC_XFER_HEADER_SIZE(rng_cnt) \
911 (offsetof(struct vmtransfer_page_packet_header, ranges) + \
912 (rng_cnt) * sizeof(struct vmtransfer_page_range))
913 #define NETVSC_MAX_PKT_SIZE (NETVSC_XFER_HEADER_SIZE(NETVSC_MAX_XFER_PAGE_RANGES) + \
914 sizeof(struct nvsp_message) + (sizeof(u32) * VRSS_SEND_TAB_SIZE))
915
916 struct multi_send_data {
917 struct sk_buff *skb; /* skb containing the pkt */
918 struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
919 u32 count; /* counter of batched packets */
920 };
921
922 struct recv_comp_data {
923 u64 tid; /* transaction id */
924 u32 status;
925 };
926
927 struct multi_recv_comp {
928 struct recv_comp_data *slots;
929 u32 first; /* first data entry */
930 u32 next; /* next entry for writing */
931 };
932
933 #define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */
934
935 struct nvsc_rsc {
936 struct ndis_pkt_8021q_info vlan;
937 struct ndis_tcp_ip_checksum_info csum_info;
938 u32 hash_info;
939 u8 ppi_flags; /* valid/present bits for the above PPIs */
940 u8 is_last; /* last RNDIS msg in a vmtransfer_page */
941 u32 cnt; /* #fragments in an RSC packet */
942 u32 pktlen; /* Full packet length */
943 void *data[NVSP_RSC_MAX];
944 u32 len[NVSP_RSC_MAX];
945 };
946
947 #define NVSC_RSC_VLAN BIT(0) /* valid/present bit for 'vlan' */
948 #define NVSC_RSC_CSUM_INFO BIT(1) /* valid/present bit for 'csum_info' */
949 #define NVSC_RSC_HASH_INFO BIT(2) /* valid/present bit for 'hash_info' */
950
951 struct netvsc_stats_tx {
952 u64 packets;
953 u64 bytes;
954 u64 xdp_xmit;
955 struct u64_stats_sync syncp;
956 };
957
958 struct netvsc_stats_rx {
959 u64 packets;
960 u64 bytes;
961 u64 broadcast;
962 u64 multicast;
963 u64 xdp_drop;
964 u64 xdp_redirect;
965 u64 xdp_tx;
966 struct u64_stats_sync syncp;
967 };
968
969 struct netvsc_ethtool_stats {
970 unsigned long tx_scattered;
971 unsigned long tx_no_memory;
972 unsigned long tx_no_space;
973 unsigned long tx_too_big;
974 unsigned long tx_busy;
975 unsigned long tx_send_full;
976 unsigned long rx_comp_busy;
977 unsigned long rx_no_memory;
978 unsigned long stop_queue;
979 unsigned long wake_queue;
980 unsigned long vlan_error;
981 };
982
983 struct netvsc_ethtool_pcpu_stats {
984 u64 rx_packets;
985 u64 rx_bytes;
986 u64 tx_packets;
987 u64 tx_bytes;
988 u64 vf_rx_packets;
989 u64 vf_rx_bytes;
990 u64 vf_tx_packets;
991 u64 vf_tx_bytes;
992 };
993
994 struct netvsc_vf_pcpu_stats {
995 u64 rx_packets;
996 u64 rx_bytes;
997 u64 tx_packets;
998 u64 tx_bytes;
999 struct u64_stats_sync syncp;
1000 u32 tx_dropped;
1001 };
1002
1003 struct netvsc_reconfig {
1004 struct list_head list;
1005 u32 event;
1006 };
1007
1008 /* L4 hash bits for different protocols */
1009 #define HV_TCP4_L4HASH 1
1010 #define HV_TCP6_L4HASH 2
1011 #define HV_UDP4_L4HASH 4
1012 #define HV_UDP6_L4HASH 8
1013 #define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
1014 HV_UDP6_L4HASH)
1015
1016 /* The context of the netvsc device */
1017 struct net_device_context {
1018 /* point back to our device context */
1019 struct hv_device *device_ctx;
1020 /* netvsc_device */
1021 struct netvsc_device __rcu *nvdev;
1022 /* list of netvsc net_devices */
1023 struct list_head list;
1024 /* reconfigure work */
1025 struct delayed_work dwork;
1026 /* last reconfig time */
1027 unsigned long last_reconfig;
1028 /* reconfig events */
1029 struct list_head reconfig_events;
1030 /* list protection */
1031 spinlock_t lock;
1032
1033 u32 msg_enable; /* debug level */
1034
1035 u32 tx_checksum_mask;
1036
1037 u32 tx_table[VRSS_SEND_TAB_SIZE];
1038
1039 u16 *rx_table;
1040
1041 u32 rx_table_sz;
1042
1043 /* Ethtool settings */
1044 u8 duplex;
1045 u32 speed;
1046 u32 l4_hash; /* L4 hash settings */
1047 struct netvsc_ethtool_stats eth_stats;
1048
1049 /* State to manage the associated VF interface. */
1050 struct net_device __rcu *vf_netdev;
1051 struct netvsc_vf_pcpu_stats __percpu *vf_stats;
1052 struct delayed_work vf_takeover;
1053
1054 /* 1: allocated, serial number is valid. 0: not allocated */
1055 u32 vf_alloc;
1056 /* Serial number of the VF to team with */
1057 u32 vf_serial;
1058 /* completion variable to confirm vf association */
1059 struct completion vf_add;
1060 /* Is the current data path through the VF NIC? */
1061 bool data_path_is_vf;
1062
1063 /* Used to temporarily save the config info across hibernation */
1064 struct netvsc_device_info *saved_netvsc_dev_info;
1065 };
1066
1067 /* Azure hosts don't support non-TCP port numbers in hashing for fragmented
1068 * packets. We can use ethtool to change UDP hash level when necessary.
1069 */
netvsc_get_hash(struct sk_buff * skb,const struct net_device_context * ndc)1070 static inline u32 netvsc_get_hash(struct sk_buff *skb,
1071 const struct net_device_context *ndc)
1072 {
1073 struct flow_keys flow;
1074 u32 hash, pkt_proto = 0;
1075 static u32 hashrnd __read_mostly;
1076
1077 net_get_random_once(&hashrnd, sizeof(hashrnd));
1078
1079 if (!skb_flow_dissect_flow_keys(skb, &flow, 0))
1080 return 0;
1081
1082 switch (flow.basic.ip_proto) {
1083 case IPPROTO_TCP:
1084 if (flow.basic.n_proto == htons(ETH_P_IP))
1085 pkt_proto = HV_TCP4_L4HASH;
1086 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1087 pkt_proto = HV_TCP6_L4HASH;
1088
1089 break;
1090
1091 case IPPROTO_UDP:
1092 if (flow.basic.n_proto == htons(ETH_P_IP))
1093 pkt_proto = HV_UDP4_L4HASH;
1094 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1095 pkt_proto = HV_UDP6_L4HASH;
1096
1097 break;
1098 }
1099
1100 if (pkt_proto & ndc->l4_hash) {
1101 return skb_get_hash(skb);
1102 } else {
1103 if (flow.basic.n_proto == htons(ETH_P_IP))
1104 hash = jhash2((u32 *)&flow.addrs.v4addrs, 2, hashrnd);
1105 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1106 hash = jhash2((u32 *)&flow.addrs.v6addrs, 8, hashrnd);
1107 else
1108 return 0;
1109
1110 __skb_set_sw_hash(skb, hash, false);
1111 }
1112
1113 return hash;
1114 }
1115
1116 /* Per channel data */
1117 struct netvsc_channel {
1118 struct vmbus_channel *channel;
1119 struct netvsc_device *net_device;
1120 void *recv_buf; /* buffer to copy packets out from the receive buffer */
1121 const struct vmpacket_descriptor *desc;
1122 struct napi_struct napi;
1123 struct multi_send_data msd;
1124 struct multi_recv_comp mrc;
1125 atomic_t queue_sends;
1126 struct nvsc_rsc rsc;
1127
1128 struct bpf_prog __rcu *bpf_prog;
1129 struct xdp_rxq_info xdp_rxq;
1130 bool xdp_flush;
1131
1132 struct netvsc_stats_tx tx_stats;
1133 struct netvsc_stats_rx rx_stats;
1134 };
1135
1136 /* Per netvsc device */
1137 struct netvsc_device {
1138 u32 nvsp_version;
1139
1140 wait_queue_head_t wait_drain;
1141 bool destroy;
1142 bool tx_disable; /* if true, do not wake up queue again */
1143
1144 /* Receive buffer allocated by us but manages by NetVSP */
1145 void *recv_buf;
1146 u32 recv_buf_size; /* allocated bytes */
1147 struct vmbus_gpadl recv_buf_gpadl_handle;
1148 u32 recv_section_cnt;
1149 u32 recv_section_size;
1150 u32 recv_completion_cnt;
1151
1152 /* Send buffer allocated by us */
1153 void *send_buf;
1154 u32 send_buf_size;
1155 struct vmbus_gpadl send_buf_gpadl_handle;
1156 u32 send_section_cnt;
1157 u32 send_section_size;
1158 unsigned long *send_section_map;
1159
1160 /* Used for NetVSP initialization protocol */
1161 struct completion channel_init_wait;
1162 struct nvsp_message channel_init_pkt;
1163
1164 struct nvsp_message revoke_packet;
1165
1166 u32 max_chn;
1167 u32 num_chn;
1168
1169 u32 netvsc_gso_max_size;
1170
1171 atomic_t open_chn;
1172 struct work_struct subchan_work;
1173 wait_queue_head_t subchan_open;
1174
1175 struct rndis_device *extension;
1176
1177 u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
1178 u32 pkt_align; /* alignment bytes, e.g. 8 */
1179
1180 struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];
1181
1182 struct rcu_head rcu;
1183 };
1184
1185 /* NdisInitialize message */
1186 struct rndis_initialize_request {
1187 u32 req_id;
1188 u32 major_ver;
1189 u32 minor_ver;
1190 u32 max_xfer_size;
1191 };
1192
1193 /* Response to NdisInitialize */
1194 struct rndis_initialize_complete {
1195 u32 req_id;
1196 u32 status;
1197 u32 major_ver;
1198 u32 minor_ver;
1199 u32 dev_flags;
1200 u32 medium;
1201 u32 max_pkt_per_msg;
1202 u32 max_xfer_size;
1203 u32 pkt_alignment_factor;
1204 u32 af_list_offset;
1205 u32 af_list_size;
1206 };
1207
1208 /* Call manager devices only: Information about an address family */
1209 /* supported by the device is appended to the response to NdisInitialize. */
1210 struct rndis_co_address_family {
1211 u32 address_family;
1212 u32 major_ver;
1213 u32 minor_ver;
1214 };
1215
1216 /* NdisHalt message */
1217 struct rndis_halt_request {
1218 u32 req_id;
1219 };
1220
1221 /* NdisQueryRequest message */
1222 struct rndis_query_request {
1223 u32 req_id;
1224 u32 oid;
1225 u32 info_buflen;
1226 u32 info_buf_offset;
1227 u32 dev_vc_handle;
1228 };
1229
1230 /* Response to NdisQueryRequest */
1231 struct rndis_query_complete {
1232 u32 req_id;
1233 u32 status;
1234 u32 info_buflen;
1235 u32 info_buf_offset;
1236 };
1237
1238 /* NdisSetRequest message */
1239 struct rndis_set_request {
1240 u32 req_id;
1241 u32 oid;
1242 u32 info_buflen;
1243 u32 info_buf_offset;
1244 u32 dev_vc_handle;
1245 u8 info_buf[];
1246 };
1247
1248 /* Response to NdisSetRequest */
1249 struct rndis_set_complete {
1250 u32 req_id;
1251 u32 status;
1252 };
1253
1254 /* NdisReset message */
1255 struct rndis_reset_request {
1256 u32 reserved;
1257 };
1258
1259 /* Response to NdisReset */
1260 struct rndis_reset_complete {
1261 u32 status;
1262 u32 addressing_reset;
1263 };
1264
1265 /* NdisMIndicateStatus message */
1266 struct rndis_indicate_status {
1267 u32 status;
1268 u32 status_buflen;
1269 u32 status_buf_offset;
1270 };
1271
1272 /* Diagnostic information passed as the status buffer in */
1273 /* struct rndis_indicate_status messages signifying error conditions. */
1274 struct rndis_diagnostic_info {
1275 u32 diag_status;
1276 u32 error_offset;
1277 };
1278
1279 /* NdisKeepAlive message */
1280 struct rndis_keepalive_request {
1281 u32 req_id;
1282 };
1283
1284 /* Response to NdisKeepAlive */
1285 struct rndis_keepalive_complete {
1286 u32 req_id;
1287 u32 status;
1288 };
1289
1290 /*
1291 * Data message. All Offset fields contain byte offsets from the beginning of
1292 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
1293 * to 0 for connectionless data, otherwise it contains the VC handle.
1294 */
1295 struct rndis_packet {
1296 u32 data_offset;
1297 u32 data_len;
1298 u32 oob_data_offset;
1299 u32 oob_data_len;
1300 u32 num_oob_data_elements;
1301 u32 per_pkt_info_offset;
1302 u32 per_pkt_info_len;
1303 u32 vc_handle;
1304 u32 reserved;
1305 };
1306
1307 /* Optional Out of Band data associated with a Data message. */
1308 struct rndis_oobd {
1309 u32 size;
1310 u32 type;
1311 u32 class_info_offset;
1312 };
1313
1314 /* Packet extension field contents associated with a Data message. */
1315 struct rndis_per_packet_info {
1316 u32 size;
1317 u32 type:31;
1318 u32 internal:1;
1319 u32 ppi_offset;
1320 };
1321
1322 enum ndis_per_pkt_info_type {
1323 TCPIP_CHKSUM_PKTINFO,
1324 IPSEC_PKTINFO,
1325 TCP_LARGESEND_PKTINFO,
1326 CLASSIFICATION_HANDLE_PKTINFO,
1327 NDIS_RESERVED,
1328 SG_LIST_PKTINFO,
1329 IEEE_8021Q_INFO,
1330 ORIGINAL_PKTINFO,
1331 PACKET_CANCEL_ID,
1332 NBL_HASH_VALUE = PACKET_CANCEL_ID,
1333 ORIGINAL_NET_BUFLIST,
1334 CACHED_NET_BUFLIST,
1335 SHORT_PKT_PADINFO,
1336 MAX_PER_PKT_INFO
1337 };
1338
1339 enum rndis_per_pkt_info_interal_type {
1340 RNDIS_PKTINFO_ID = 1,
1341 /* Add more members here */
1342
1343 RNDIS_PKTINFO_MAX
1344 };
1345
1346 #define RNDIS_PKTINFO_SUBALLOC BIT(0)
1347 #define RNDIS_PKTINFO_1ST_FRAG BIT(1)
1348 #define RNDIS_PKTINFO_LAST_FRAG BIT(2)
1349
1350 #define RNDIS_PKTINFO_ID_V1 1
1351
1352 struct rndis_pktinfo_id {
1353 u8 ver;
1354 u8 flag;
1355 u16 pkt_id;
1356 };
1357
1358 struct ndis_object_header {
1359 u8 type;
1360 u8 revision;
1361 u16 size;
1362 };
1363
1364 #define NDIS_OBJECT_TYPE_DEFAULT 0x80
1365 #define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
1366 #define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
1367 #define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
1368
1369 #define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
1370 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
1371 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
1372 #define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
1373 #define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
1374 #define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
1375 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
1376 #define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
1377 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
1378 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
1379
1380 #define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
1381 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
1382 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
1383
1384 #define VERSION_4_OFFLOAD_SIZE 22
1385 /*
1386 * New offload OIDs for NDIS 6
1387 */
1388 #define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
1389 #define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
1390 #define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
1391 #define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
1392 #define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
1393 #define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
1394
1395 /*
1396 * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
1397 * ndis_type: NDIS_OBJTYPE_OFFLOAD
1398 */
1399
1400 #define NDIS_OFFLOAD_ENCAP_NONE 0x0000
1401 #define NDIS_OFFLOAD_ENCAP_NULL 0x0001
1402 #define NDIS_OFFLOAD_ENCAP_8023 0x0002
1403 #define NDIS_OFFLOAD_ENCAP_8023PQ 0x0004
1404 #define NDIS_OFFLOAD_ENCAP_8023PQ_OOB 0x0008
1405 #define NDIS_OFFLOAD_ENCAP_RFC1483 0x0010
1406
1407 struct ndis_csum_offload {
1408 u32 ip4_txenc;
1409 u32 ip4_txcsum;
1410 #define NDIS_TXCSUM_CAP_IP4OPT 0x001
1411 #define NDIS_TXCSUM_CAP_TCP4OPT 0x004
1412 #define NDIS_TXCSUM_CAP_TCP4 0x010
1413 #define NDIS_TXCSUM_CAP_UDP4 0x040
1414 #define NDIS_TXCSUM_CAP_IP4 0x100
1415
1416 #define NDIS_TXCSUM_ALL_TCP4 (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
1417
1418 u32 ip4_rxenc;
1419 u32 ip4_rxcsum;
1420 #define NDIS_RXCSUM_CAP_IP4OPT 0x001
1421 #define NDIS_RXCSUM_CAP_TCP4OPT 0x004
1422 #define NDIS_RXCSUM_CAP_TCP4 0x010
1423 #define NDIS_RXCSUM_CAP_UDP4 0x040
1424 #define NDIS_RXCSUM_CAP_IP4 0x100
1425 u32 ip6_txenc;
1426 u32 ip6_txcsum;
1427 #define NDIS_TXCSUM_CAP_IP6EXT 0x001
1428 #define NDIS_TXCSUM_CAP_TCP6OPT 0x004
1429 #define NDIS_TXCSUM_CAP_TCP6 0x010
1430 #define NDIS_TXCSUM_CAP_UDP6 0x040
1431 u32 ip6_rxenc;
1432 u32 ip6_rxcsum;
1433 #define NDIS_RXCSUM_CAP_IP6EXT 0x001
1434 #define NDIS_RXCSUM_CAP_TCP6OPT 0x004
1435 #define NDIS_RXCSUM_CAP_TCP6 0x010
1436 #define NDIS_RXCSUM_CAP_UDP6 0x040
1437
1438 #define NDIS_TXCSUM_ALL_TCP6 (NDIS_TXCSUM_CAP_TCP6 | \
1439 NDIS_TXCSUM_CAP_TCP6OPT | \
1440 NDIS_TXCSUM_CAP_IP6EXT)
1441 };
1442
1443 struct ndis_lsov1_offload {
1444 u32 encap;
1445 u32 maxsize;
1446 u32 minsegs;
1447 u32 opts;
1448 };
1449
1450 struct ndis_ipsecv1_offload {
1451 u32 encap;
1452 u32 ah_esp;
1453 u32 xport_tun;
1454 u32 ip4_opts;
1455 u32 flags;
1456 u32 ip4_ah;
1457 u32 ip4_esp;
1458 };
1459
1460 struct ndis_lsov2_offload {
1461 u32 ip4_encap;
1462 u32 ip4_maxsz;
1463 u32 ip4_minsg;
1464 u32 ip6_encap;
1465 u32 ip6_maxsz;
1466 u32 ip6_minsg;
1467 u32 ip6_opts;
1468 #define NDIS_LSOV2_CAP_IP6EXT 0x001
1469 #define NDIS_LSOV2_CAP_TCP6OPT 0x004
1470
1471 #define NDIS_LSOV2_CAP_IP6 (NDIS_LSOV2_CAP_IP6EXT | \
1472 NDIS_LSOV2_CAP_TCP6OPT)
1473 };
1474
1475 struct ndis_ipsecv2_offload {
1476 u32 encap;
1477 u8 ip6;
1478 u8 ip4opt;
1479 u8 ip6ext;
1480 u8 ah;
1481 u8 esp;
1482 u8 ah_esp;
1483 u8 xport;
1484 u8 tun;
1485 u8 xport_tun;
1486 u8 lso;
1487 u8 extseq;
1488 u32 udp_esp;
1489 u32 auth;
1490 u32 crypto;
1491 u32 sa_caps;
1492 };
1493
1494 struct ndis_rsc_offload {
1495 u8 ip4;
1496 u8 ip6;
1497 };
1498
1499 struct ndis_encap_offload {
1500 u32 flags;
1501 u32 maxhdr;
1502 };
1503
1504 struct ndis_offload {
1505 struct ndis_object_header header;
1506 struct ndis_csum_offload csum;
1507 struct ndis_lsov1_offload lsov1;
1508 struct ndis_ipsecv1_offload ipsecv1;
1509 struct ndis_lsov2_offload lsov2;
1510 u32 flags;
1511 /* NDIS >= 6.1 */
1512 struct ndis_ipsecv2_offload ipsecv2;
1513 /* NDIS >= 6.30 */
1514 struct ndis_rsc_offload rsc;
1515 struct ndis_encap_offload encap_gre;
1516 };
1517
1518 #define NDIS_OFFLOAD_SIZE sizeof(struct ndis_offload)
1519 #define NDIS_OFFLOAD_SIZE_6_0 offsetof(struct ndis_offload, ipsecv2)
1520 #define NDIS_OFFLOAD_SIZE_6_1 offsetof(struct ndis_offload, rsc)
1521
1522 struct ndis_offload_params {
1523 struct ndis_object_header header;
1524 u8 ip_v4_csum;
1525 u8 tcp_ip_v4_csum;
1526 u8 udp_ip_v4_csum;
1527 u8 tcp_ip_v6_csum;
1528 u8 udp_ip_v6_csum;
1529 u8 lso_v1;
1530 u8 ip_sec_v1;
1531 u8 lso_v2_ipv4;
1532 u8 lso_v2_ipv6;
1533 u8 tcp_connection_ip_v4;
1534 u8 tcp_connection_ip_v6;
1535 u32 flags;
1536 u8 ip_sec_v2;
1537 u8 ip_sec_v2_ip_v4;
1538 struct {
1539 u8 rsc_ip_v4;
1540 u8 rsc_ip_v6;
1541 };
1542 struct {
1543 u8 encapsulated_packet_task_offload;
1544 u8 encapsulation_types;
1545 };
1546 };
1547
1548 struct ndis_tcp_lso_info {
1549 union {
1550 struct {
1551 u32 unused:30;
1552 u32 type:1;
1553 u32 reserved2:1;
1554 } transmit;
1555 struct {
1556 u32 mss:20;
1557 u32 tcp_header_offset:10;
1558 u32 type:1;
1559 u32 reserved2:1;
1560 } lso_v1_transmit;
1561 struct {
1562 u32 tcp_payload:30;
1563 u32 type:1;
1564 u32 reserved2:1;
1565 } lso_v1_transmit_complete;
1566 struct {
1567 u32 mss:20;
1568 u32 tcp_header_offset:10;
1569 u32 type:1;
1570 u32 ip_version:1;
1571 } lso_v2_transmit;
1572 struct {
1573 u32 reserved:30;
1574 u32 type:1;
1575 u32 reserved2:1;
1576 } lso_v2_transmit_complete;
1577 u32 value;
1578 };
1579 };
1580
1581 #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1582 sizeof(struct ndis_pkt_8021q_info))
1583
1584 #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1585 sizeof(struct ndis_tcp_ip_checksum_info))
1586
1587 #define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1588 sizeof(struct ndis_tcp_lso_info))
1589
1590 #define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1591 sizeof(u32))
1592
1593 /* Total size of all PPI data */
1594 #define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1595 NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1596
1597 /* Format of Information buffer passed in a SetRequest for the OID */
1598 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1599 struct rndis_config_parameter_info {
1600 u32 parameter_name_offset;
1601 u32 parameter_name_length;
1602 u32 parameter_type;
1603 u32 parameter_value_offset;
1604 u32 parameter_value_length;
1605 };
1606
1607 /* Values for ParameterType in struct rndis_config_parameter_info */
1608 #define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
1609 #define RNDIS_CONFIG_PARAM_TYPE_STRING 2
1610
1611 /* CONDIS Miniport messages for connection oriented devices */
1612 /* that do not implement a call manager. */
1613
1614 /* CoNdisMiniportCreateVc message */
1615 struct rcondis_mp_create_vc {
1616 u32 req_id;
1617 u32 ndis_vc_handle;
1618 };
1619
1620 /* Response to CoNdisMiniportCreateVc */
1621 struct rcondis_mp_create_vc_complete {
1622 u32 req_id;
1623 u32 dev_vc_handle;
1624 u32 status;
1625 };
1626
1627 /* CoNdisMiniportDeleteVc message */
1628 struct rcondis_mp_delete_vc {
1629 u32 req_id;
1630 u32 dev_vc_handle;
1631 };
1632
1633 /* Response to CoNdisMiniportDeleteVc */
1634 struct rcondis_mp_delete_vc_complete {
1635 u32 req_id;
1636 u32 status;
1637 };
1638
1639 /* CoNdisMiniportQueryRequest message */
1640 struct rcondis_mp_query_request {
1641 u32 req_id;
1642 u32 request_type;
1643 u32 oid;
1644 u32 dev_vc_handle;
1645 u32 info_buflen;
1646 u32 info_buf_offset;
1647 };
1648
1649 /* CoNdisMiniportSetRequest message */
1650 struct rcondis_mp_set_request {
1651 u32 req_id;
1652 u32 request_type;
1653 u32 oid;
1654 u32 dev_vc_handle;
1655 u32 info_buflen;
1656 u32 info_buf_offset;
1657 };
1658
1659 /* CoNdisIndicateStatus message */
1660 struct rcondis_indicate_status {
1661 u32 ndis_vc_handle;
1662 u32 status;
1663 u32 status_buflen;
1664 u32 status_buf_offset;
1665 };
1666
1667 /* CONDIS Call/VC parameters */
1668 struct rcondis_specific_parameters {
1669 u32 parameter_type;
1670 u32 parameter_length;
1671 u32 parameter_lffset;
1672 };
1673
1674 struct rcondis_media_parameters {
1675 u32 flags;
1676 u32 reserved1;
1677 u32 reserved2;
1678 struct rcondis_specific_parameters media_specific;
1679 };
1680
1681 struct rndis_flowspec {
1682 u32 token_rate;
1683 u32 token_bucket_size;
1684 u32 peak_bandwidth;
1685 u32 latency;
1686 u32 delay_variation;
1687 u32 service_type;
1688 u32 max_sdu_size;
1689 u32 minimum_policed_size;
1690 };
1691
1692 struct rcondis_call_manager_parameters {
1693 struct rndis_flowspec transmit;
1694 struct rndis_flowspec receive;
1695 struct rcondis_specific_parameters call_mgr_specific;
1696 };
1697
1698 /* CoNdisMiniportActivateVc message */
1699 struct rcondis_mp_activate_vc_request {
1700 u32 req_id;
1701 u32 flags;
1702 u32 dev_vc_handle;
1703 u32 media_params_offset;
1704 u32 media_params_length;
1705 u32 call_mgr_params_offset;
1706 u32 call_mgr_params_length;
1707 };
1708
1709 /* Response to CoNdisMiniportActivateVc */
1710 struct rcondis_mp_activate_vc_complete {
1711 u32 req_id;
1712 u32 status;
1713 };
1714
1715 /* CoNdisMiniportDeactivateVc message */
1716 struct rcondis_mp_deactivate_vc_request {
1717 u32 req_id;
1718 u32 flags;
1719 u32 dev_vc_handle;
1720 };
1721
1722 /* Response to CoNdisMiniportDeactivateVc */
1723 struct rcondis_mp_deactivate_vc_complete {
1724 u32 req_id;
1725 u32 status;
1726 };
1727
1728
1729 /* union with all of the RNDIS messages */
1730 union rndis_message_container {
1731 struct rndis_packet pkt;
1732 struct rndis_initialize_request init_req;
1733 struct rndis_halt_request halt_req;
1734 struct rndis_query_request query_req;
1735 struct rndis_set_request set_req;
1736 struct rndis_reset_request reset_req;
1737 struct rndis_keepalive_request keep_alive_req;
1738 struct rndis_indicate_status indicate_status;
1739 struct rndis_initialize_complete init_complete;
1740 struct rndis_query_complete query_complete;
1741 struct rndis_set_complete set_complete;
1742 struct rndis_reset_complete reset_complete;
1743 struct rndis_keepalive_complete keep_alive_complete;
1744 struct rcondis_mp_create_vc co_miniport_create_vc;
1745 struct rcondis_mp_delete_vc co_miniport_delete_vc;
1746 struct rcondis_indicate_status co_indicate_status;
1747 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1748 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1749 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1750 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1751 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1752 struct rcondis_mp_deactivate_vc_complete
1753 co_miniport_deactivate_vc_complete;
1754 };
1755
1756 /* Remote NDIS message format */
1757 struct rndis_message {
1758 u32 ndis_msg_type;
1759
1760 /* Total length of this message, from the beginning */
1761 /* of the struct rndis_message, in bytes. */
1762 u32 msg_len;
1763
1764 /* Actual message */
1765 union rndis_message_container msg;
1766 };
1767
1768
1769 /* Handy macros */
1770
1771 /* get the size of an RNDIS message. Pass in the message type, */
1772 /* struct rndis_set_request, struct rndis_packet for example */
1773 #define RNDIS_MESSAGE_SIZE(msg) \
1774 (sizeof(msg) + (sizeof(struct rndis_message) - \
1775 sizeof(union rndis_message_container)))
1776
1777 #define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
1778 sizeof(union rndis_message_container))
1779
1780 #define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1781
1782 #define NDIS_PACKET_TYPE_DIRECTED 0x00000001
1783 #define NDIS_PACKET_TYPE_MULTICAST 0x00000002
1784 #define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
1785 #define NDIS_PACKET_TYPE_BROADCAST 0x00000008
1786 #define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
1787 #define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
1788 #define NDIS_PACKET_TYPE_SMT 0x00000040
1789 #define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
1790 #define NDIS_PACKET_TYPE_GROUP 0x00000100
1791 #define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
1792 #define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
1793 #define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
1794
1795 #define TRANSPORT_INFO_NOT_IP 0
1796 #define TRANSPORT_INFO_IPV4_TCP 0x01
1797 #define TRANSPORT_INFO_IPV4_UDP 0x02
1798 #define TRANSPORT_INFO_IPV6_TCP 0x10
1799 #define TRANSPORT_INFO_IPV6_UDP 0x20
1800
1801 #define RETRY_US_LO 5000
1802 #define RETRY_US_HI 10000
1803 #define RETRY_MAX 2000 /* >10 sec */
1804
1805 void netvsc_dma_unmap(struct hv_device *hv_dev,
1806 struct hv_netvsc_packet *packet);
1807 #endif /* _HYPERV_NET_H */
1808