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
32struct 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
49struct 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
80struct 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
111struct 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
137struct 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 */
156struct 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 page_buf_cnt;
162
163 u16 q_idx;
164 u16 total_packets;
165
166 u32 total_bytes;
167 u32 send_buf_index;
168 u32 total_data_buflen;
169 struct hv_dma_range *dma_range;
170};
171
172#define NETVSC_HASH_KEYLEN 40
173
174struct netvsc_device_info {
175 unsigned char mac_adr[ETH_ALEN];
176 u32 num_chn;
177 u32 send_sections;
178 u32 recv_sections;
179 u32 send_section_size;
180 u32 recv_section_size;
181
182 struct bpf_prog *bprog;
183
184 u8 rss_key[NETVSC_HASH_KEYLEN];
185};
186
187enum rndis_device_state {
188 RNDIS_DEV_UNINITIALIZED = 0,
189 RNDIS_DEV_INITIALIZING,
190 RNDIS_DEV_INITIALIZED,
191 RNDIS_DEV_DATAINITIALIZED,
192};
193
194struct rndis_device {
195 struct net_device *ndev;
196
197 enum rndis_device_state state;
198
199 atomic_t new_req_id;
200
201 spinlock_t request_lock;
202 struct list_head req_list;
203
204 struct work_struct mcast_work;
205 u32 filter;
206
207 bool link_state; /* 0 - link up, 1 - link down */
208
209 u8 hw_mac_adr[ETH_ALEN];
210 u8 rss_key[NETVSC_HASH_KEYLEN];
211};
212
213
214/* Interface */
215struct rndis_message;
216struct ndis_offload_params;
217struct netvsc_device;
218struct netvsc_channel;
219struct net_device_context;
220
221extern u32 netvsc_ring_bytes;
222
223struct netvsc_device *netvsc_device_add(struct hv_device *device,
224 const struct netvsc_device_info *info);
225int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
226void netvsc_device_remove(struct hv_device *device);
227int netvsc_send(struct net_device *net,
228 struct hv_netvsc_packet *packet,
229 struct rndis_message *rndis_msg,
230 struct hv_page_buffer *page_buffer,
231 struct sk_buff *skb,
232 bool xdp_tx);
233void netvsc_linkstatus_callback(struct net_device *net,
234 struct rndis_message *resp,
235 void *data, u32 data_buflen);
236int netvsc_recv_callback(struct net_device *net,
237 struct netvsc_device *nvdev,
238 struct netvsc_channel *nvchan);
239void netvsc_channel_cb(void *context);
240int netvsc_poll(struct napi_struct *napi, int budget);
241
242void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev);
243u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
244 struct xdp_buff *xdp);
245unsigned int netvsc_xdp_fraglen(unsigned int len);
246struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev);
247int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog,
248 struct netlink_ext_ack *extack,
249 struct netvsc_device *nvdev);
250int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog);
251int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf);
252int netvsc_ndoxdp_xmit(struct net_device *ndev, int n,
253 struct xdp_frame **frames, u32 flags);
254
255int rndis_set_subchannel(struct net_device *ndev,
256 struct netvsc_device *nvdev,
257 struct netvsc_device_info *dev_info);
258int rndis_filter_open(struct netvsc_device *nvdev);
259int rndis_filter_close(struct netvsc_device *nvdev);
260struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
261 struct netvsc_device_info *info);
262void rndis_filter_update(struct netvsc_device *nvdev);
263void rndis_filter_device_remove(struct hv_device *dev,
264 struct netvsc_device *nvdev);
265int rndis_filter_set_rss_param(struct rndis_device *rdev,
266 const u8 *key);
267int rndis_filter_set_offload_params(struct net_device *ndev,
268 struct netvsc_device *nvdev,
269 struct ndis_offload_params *req_offloads);
270int rndis_filter_receive(struct net_device *ndev,
271 struct netvsc_device *net_dev,
272 struct netvsc_channel *nvchan,
273 void *data, u32 buflen);
274
275int rndis_filter_set_device_mac(struct netvsc_device *ndev,
276 const char *mac);
277
278int netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
279
280#define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
281
282#define NVSP_PROTOCOL_VERSION_1 2
283#define NVSP_PROTOCOL_VERSION_2 0x30002
284#define NVSP_PROTOCOL_VERSION_4 0x40000
285#define NVSP_PROTOCOL_VERSION_5 0x50000
286#define NVSP_PROTOCOL_VERSION_6 0x60000
287#define NVSP_PROTOCOL_VERSION_61 0x60001
288
289enum {
290 NVSP_MSG_TYPE_NONE = 0,
291
292 /* Init Messages */
293 NVSP_MSG_TYPE_INIT = 1,
294 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
295
296 NVSP_VERSION_MSG_START = 100,
297
298 /* Version 1 Messages */
299 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
300
301 NVSP_MSG1_TYPE_SEND_RECV_BUF,
302 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
303 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
304
305 NVSP_MSG1_TYPE_SEND_SEND_BUF,
306 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
307 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
308
309 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
310 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
311
312 /* Version 2 messages */
313 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
314 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
315 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
316
317 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
318
319 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
320 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
321
322 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
323
324 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
325 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
326
327 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
328 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
329
330 NVSP_MSG2_TYPE_ALLOC_RXBUF,
331 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
332
333 NVSP_MSG2_TYPE_FREE_RXBUF,
334
335 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
336 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
337
338 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
339
340 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
341 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
342
343 NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
344
345 /* Version 4 messages */
346 NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
347 NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
348 NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
349
350 NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
351
352 /* Version 5 messages */
353 NVSP_MSG5_TYPE_OID_QUERY_EX,
354 NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
355 NVSP_MSG5_TYPE_SUBCHANNEL,
356 NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
357
358 NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
359
360 /* Version 6 messages */
361 NVSP_MSG6_TYPE_PD_API,
362 NVSP_MSG6_TYPE_PD_POST_BATCH,
363
364 NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
365};
366
367enum {
368 NVSP_STAT_NONE = 0,
369 NVSP_STAT_SUCCESS,
370 NVSP_STAT_FAIL,
371 NVSP_STAT_PROTOCOL_TOO_NEW,
372 NVSP_STAT_PROTOCOL_TOO_OLD,
373 NVSP_STAT_INVALID_RNDIS_PKT,
374 NVSP_STAT_BUSY,
375 NVSP_STAT_PROTOCOL_UNSUPPORTED,
376 NVSP_STAT_MAX,
377};
378
379struct nvsp_message_header {
380 u32 msg_type;
381};
382
383/* Init Messages */
384
385/*
386 * This message is used by the VSC to initialize the channel after the channels
387 * has been opened. This message should never include anything other then
388 * versioning (i.e. this message will be the same for ever).
389 */
390struct nvsp_message_init {
391 u32 min_protocol_ver;
392 u32 max_protocol_ver;
393} __packed;
394
395/*
396 * This message is used by the VSP to complete the initialization of the
397 * channel. This message should never include anything other then versioning
398 * (i.e. this message will be the same for ever).
399 */
400struct nvsp_message_init_complete {
401 u32 negotiated_protocol_ver;
402 u32 max_mdl_chain_len;
403 u32 status;
404} __packed;
405
406union nvsp_message_init_uber {
407 struct nvsp_message_init init;
408 struct nvsp_message_init_complete init_complete;
409} __packed;
410
411/* Version 1 Messages */
412
413/*
414 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
415 * can use this information when handling OIDs sent by the VSC.
416 */
417struct nvsp_1_message_send_ndis_version {
418 u32 ndis_major_ver;
419 u32 ndis_minor_ver;
420} __packed;
421
422/*
423 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
424 * can then use the receive buffer to send data to the VSC.
425 */
426struct nvsp_1_message_send_receive_buffer {
427 u32 gpadl_handle;
428 u16 id;
429} __packed;
430
431struct nvsp_1_receive_buffer_section {
432 u32 offset;
433 u32 sub_alloc_size;
434 u32 num_sub_allocs;
435 u32 end_offset;
436} __packed;
437
438/*
439 * This message is used by the VSP to acknowledge a receive buffer send by the
440 * VSC. This message must be sent by the VSP before the VSP uses the receive
441 * buffer.
442 */
443struct nvsp_1_message_send_receive_buffer_complete {
444 u32 status;
445 u32 num_sections;
446
447 /*
448 * The receive buffer is split into two parts, a large suballocation
449 * section and a small suballocation section. These sections are then
450 * suballocated by a certain size.
451 */
452
453 /*
454 * For example, the following break up of the receive buffer has 6
455 * large suballocations and 10 small suballocations.
456 */
457
458 /*
459 * | Large Section | | Small Section |
460 * ------------------------------------------------------------
461 * | | | | | | | | | | | | | | | | | |
462 * | |
463 * LargeOffset SmallOffset
464 */
465
466 struct nvsp_1_receive_buffer_section sections[];
467} __packed;
468
469/*
470 * This message is sent by the VSC to revoke the receive buffer. After the VSP
471 * completes this transaction, the vsp should never use the receive buffer
472 * again.
473 */
474struct nvsp_1_message_revoke_receive_buffer {
475 u16 id;
476};
477
478/*
479 * This message is used by the VSC to send a send buffer to the VSP. The VSC
480 * can then use the send buffer to send data to the VSP.
481 */
482struct nvsp_1_message_send_send_buffer {
483 u32 gpadl_handle;
484 u16 id;
485} __packed;
486
487/*
488 * This message is used by the VSP to acknowledge a send buffer sent by the
489 * VSC. This message must be sent by the VSP before the VSP uses the sent
490 * buffer.
491 */
492struct nvsp_1_message_send_send_buffer_complete {
493 u32 status;
494
495 /*
496 * The VSC gets to choose the size of the send buffer and the VSP gets
497 * to choose the sections size of the buffer. This was done to enable
498 * dynamic reconfigurations when the cost of GPA-direct buffers
499 * decreases.
500 */
501 u32 section_size;
502} __packed;
503
504/*
505 * This message is sent by the VSC to revoke the send buffer. After the VSP
506 * completes this transaction, the vsp should never use the send buffer again.
507 */
508struct nvsp_1_message_revoke_send_buffer {
509 u16 id;
510};
511
512/*
513 * This message is used by both the VSP and the VSC to send a RNDIS message to
514 * the opposite channel endpoint.
515 */
516struct nvsp_1_message_send_rndis_packet {
517 /*
518 * This field is specified by RNDIS. They assume there's two different
519 * channels of communication. However, the Network VSP only has one.
520 * Therefore, the channel travels with the RNDIS packet.
521 */
522 u32 channel_type;
523
524 /*
525 * This field is used to send part or all of the data through a send
526 * buffer. This values specifies an index into the send buffer. If the
527 * index is 0xFFFFFFFF, then the send buffer is not being used and all
528 * of the data was sent through other VMBus mechanisms.
529 */
530 u32 send_buf_section_index;
531 u32 send_buf_section_size;
532} __packed;
533
534/*
535 * This message is used by both the VSP and the VSC to complete a RNDIS message
536 * to the opposite channel endpoint. At this point, the initiator of this
537 * message cannot use any resources associated with the original RNDIS packet.
538 */
539struct nvsp_1_message_send_rndis_packet_complete {
540 u32 status;
541};
542
543union nvsp_1_message_uber {
544 struct nvsp_1_message_send_ndis_version send_ndis_ver;
545
546 struct nvsp_1_message_send_receive_buffer send_recv_buf;
547 struct nvsp_1_message_send_receive_buffer_complete
548 send_recv_buf_complete;
549 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
550
551 struct nvsp_1_message_send_send_buffer send_send_buf;
552 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
553 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
554
555 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
556 struct nvsp_1_message_send_rndis_packet_complete
557 send_rndis_pkt_complete;
558} __packed;
559
560
561/*
562 * Network VSP protocol version 2 messages:
563 */
564struct nvsp_2_vsc_capability {
565 union {
566 u64 data;
567 struct {
568 u64 vmq:1;
569 u64 chimney:1;
570 u64 sriov:1;
571 u64 ieee8021q:1;
572 u64 correlation_id:1;
573 u64 teaming:1;
574 u64 vsubnetid:1;
575 u64 rsc:1;
576 };
577 };
578} __packed;
579
580struct nvsp_2_send_ndis_config {
581 u32 mtu;
582 u32 reserved;
583 struct nvsp_2_vsc_capability capability;
584} __packed;
585
586/* Allocate receive buffer */
587struct nvsp_2_alloc_rxbuf {
588 /* Allocation ID to match the allocation request and response */
589 u32 alloc_id;
590
591 /* Length of the VM shared memory receive buffer that needs to
592 * be allocated
593 */
594 u32 len;
595} __packed;
596
597/* Allocate receive buffer complete */
598struct nvsp_2_alloc_rxbuf_comp {
599 /* The NDIS_STATUS code for buffer allocation */
600 u32 status;
601
602 u32 alloc_id;
603
604 /* GPADL handle for the allocated receive buffer */
605 u32 gpadl_handle;
606
607 /* Receive buffer ID */
608 u64 recv_buf_id;
609} __packed;
610
611struct nvsp_2_free_rxbuf {
612 u64 recv_buf_id;
613} __packed;
614
615union nvsp_2_message_uber {
616 struct nvsp_2_send_ndis_config send_ndis_config;
617 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
618 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
619 struct nvsp_2_free_rxbuf free_rxbuf;
620} __packed;
621
622struct nvsp_4_send_vf_association {
623 /* 1: allocated, serial number is valid. 0: not allocated */
624 u32 allocated;
625
626 /* Serial number of the VF to team with */
627 u32 serial;
628} __packed;
629
630enum nvsp_vm_datapath {
631 NVSP_DATAPATH_SYNTHETIC = 0,
632 NVSP_DATAPATH_VF,
633 NVSP_DATAPATH_MAX
634};
635
636struct nvsp_4_sw_datapath {
637 u32 active_datapath; /* active data path in VM */
638} __packed;
639
640union nvsp_4_message_uber {
641 struct nvsp_4_send_vf_association vf_assoc;
642 struct nvsp_4_sw_datapath active_dp;
643} __packed;
644
645enum nvsp_subchannel_operation {
646 NVSP_SUBCHANNEL_NONE = 0,
647 NVSP_SUBCHANNEL_ALLOCATE,
648 NVSP_SUBCHANNEL_MAX
649};
650
651struct nvsp_5_subchannel_request {
652 u32 op;
653 u32 num_subchannels;
654} __packed;
655
656struct nvsp_5_subchannel_complete {
657 u32 status;
658 u32 num_subchannels; /* Actual number of subchannels allocated */
659} __packed;
660
661struct nvsp_5_send_indirect_table {
662 /* The number of entries in the send indirection table */
663 u32 count;
664
665 /* The offset of the send indirection table from the beginning of
666 * struct nvsp_message.
667 * The send indirection table tells which channel to put the send
668 * traffic on. Each entry is a channel number.
669 */
670 u32 offset;
671} __packed;
672
673union nvsp_5_message_uber {
674 struct nvsp_5_subchannel_request subchn_req;
675 struct nvsp_5_subchannel_complete subchn_comp;
676 struct nvsp_5_send_indirect_table send_table;
677} __packed;
678
679enum nvsp_6_pd_api_op {
680 PD_API_OP_CONFIG = 1,
681 PD_API_OP_SW_DATAPATH, /* Switch Datapath */
682 PD_API_OP_OPEN_PROVIDER,
683 PD_API_OP_CLOSE_PROVIDER,
684 PD_API_OP_CREATE_QUEUE,
685 PD_API_OP_FLUSH_QUEUE,
686 PD_API_OP_FREE_QUEUE,
687 PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
688 PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
689 PD_API_OP_MAX
690};
691
692struct grp_affinity {
693 u64 mask;
694 u16 grp;
695 u16 reserved[3];
696} __packed;
697
698struct nvsp_6_pd_api_req {
699 u32 op;
700
701 union {
702 /* MMIO information is sent from the VM to VSP */
703 struct __packed {
704 u64 mmio_pa; /* MMIO Physical Address */
705 u32 mmio_len;
706
707 /* Number of PD queues a VM can support */
708 u16 num_subchn;
709 } config;
710
711 /* Switch Datapath */
712 struct __packed {
713 /* Host Datapath Is PacketDirect */
714 u8 host_dpath_is_pd;
715
716 /* Guest PacketDirect Is Enabled */
717 u8 guest_pd_enabled;
718 } sw_dpath;
719
720 /* Open Provider*/
721 struct __packed {
722 u32 prov_id; /* Provider id */
723 u32 flag;
724 } open_prov;
725
726 /* Close Provider */
727 struct __packed {
728 u32 prov_id;
729 } cls_prov;
730
731 /* Create Queue*/
732 struct __packed {
733 u32 prov_id;
734 u16 q_id;
735 u16 q_size;
736 u8 is_recv_q;
737 u8 is_rss_q;
738 u32 recv_data_len;
739 struct grp_affinity affy;
740 } cr_q;
741
742 /* Delete Queue*/
743 struct __packed {
744 u32 prov_id;
745 u16 q_id;
746 } del_q;
747
748 /* Flush Queue */
749 struct __packed {
750 u32 prov_id;
751 u16 q_id;
752 } flush_q;
753
754 /* Allocate Common Buffer */
755 struct __packed {
756 u32 len;
757 u32 pf_node; /* Preferred Node */
758 u16 region_id;
759 } alloc_com_buf;
760
761 /* Free Common Buffer */
762 struct __packed {
763 u32 len;
764 u64 pa; /* Physical Address */
765 u32 pf_node; /* Preferred Node */
766 u16 region_id;
767 u8 cache_type;
768 } free_com_buf;
769 } __packed;
770} __packed;
771
772struct nvsp_6_pd_api_comp {
773 u32 op;
774 u32 status;
775
776 union {
777 struct __packed {
778 /* actual number of PD queues allocated to the VM */
779 u16 num_pd_q;
780
781 /* Num Receive Rss PD Queues */
782 u8 num_rss_q;
783
784 u8 is_supported; /* Is supported by VSP */
785 u8 is_enabled; /* Is enabled by VSP */
786 } config;
787
788 /* Open Provider */
789 struct __packed {
790 u32 prov_id;
791 } open_prov;
792
793 /* Create Queue */
794 struct __packed {
795 u32 prov_id;
796 u16 q_id;
797 u16 q_size;
798 u32 recv_data_len;
799 struct grp_affinity affy;
800 } cr_q;
801
802 /* Allocate Common Buffer */
803 struct __packed {
804 u64 pa; /* Physical Address */
805 u32 len;
806 u32 pf_node; /* Preferred Node */
807 u16 region_id;
808 u8 cache_type;
809 } alloc_com_buf;
810 } __packed;
811} __packed;
812
813struct nvsp_6_pd_buf {
814 u32 region_offset;
815 u16 region_id;
816 u16 is_partial:1;
817 u16 reserved:15;
818} __packed;
819
820struct nvsp_6_pd_batch_msg {
821 struct nvsp_message_header hdr;
822 u16 count;
823 u16 guest2host:1;
824 u16 is_recv:1;
825 u16 reserved:14;
826 struct nvsp_6_pd_buf pd_buf[0];
827} __packed;
828
829union nvsp_6_message_uber {
830 struct nvsp_6_pd_api_req pd_req;
831 struct nvsp_6_pd_api_comp pd_comp;
832} __packed;
833
834union nvsp_all_messages {
835 union nvsp_message_init_uber init_msg;
836 union nvsp_1_message_uber v1_msg;
837 union nvsp_2_message_uber v2_msg;
838 union nvsp_4_message_uber v4_msg;
839 union nvsp_5_message_uber v5_msg;
840 union nvsp_6_message_uber v6_msg;
841} __packed;
842
843/* ALL Messages */
844struct nvsp_message {
845 struct nvsp_message_header hdr;
846 union nvsp_all_messages msg;
847} __packed;
848
849
850#define NETVSC_MTU 65535
851#define NETVSC_MTU_MIN ETH_MIN_MTU
852
853/* Max buffer sizes allowed by a host */
854#define NETVSC_RECEIVE_BUFFER_SIZE (1024 * 1024 * 31) /* 31MB */
855#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024 * 1024 * 15) /* 15MB */
856#define NETVSC_RECEIVE_BUFFER_DEFAULT (1024 * 1024 * 16)
857
858#define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
859#define NETVSC_SEND_BUFFER_DEFAULT (1024 * 1024)
860
861#define NETVSC_INVALID_INDEX -1
862
863#define NETVSC_SEND_SECTION_SIZE 6144
864#define NETVSC_RECV_SECTION_SIZE 1728
865
866/* Default size of TX buf: 1MB, RX buf: 16MB */
867#define NETVSC_MIN_TX_SECTIONS 10
868#define NETVSC_DEFAULT_TX (NETVSC_SEND_BUFFER_DEFAULT \
869 / NETVSC_SEND_SECTION_SIZE)
870#define NETVSC_MIN_RX_SECTIONS 10
871#define NETVSC_DEFAULT_RX (NETVSC_RECEIVE_BUFFER_DEFAULT \
872 / NETVSC_RECV_SECTION_SIZE)
873
874#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
875#define NETVSC_SEND_BUFFER_ID 0
876
877#define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
878 NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
879 NETIF_F_TSO6 | NETIF_F_LRO | \
880 NETIF_F_SG | NETIF_F_RXHASH)
881
882#define VRSS_SEND_TAB_SIZE 16 /* must be power of 2 */
883#define VRSS_CHANNEL_MAX 64
884#define VRSS_CHANNEL_DEFAULT 16
885
886#define RNDIS_MAX_PKT_DEFAULT 8
887#define RNDIS_PKT_ALIGN_DEFAULT 8
888
889#define NETVSC_XDP_HDRM 256
890
891#define NETVSC_MIN_OUT_MSG_SIZE (sizeof(struct vmpacket_descriptor) + \
892 sizeof(struct nvsp_message))
893#define NETVSC_MIN_IN_MSG_SIZE sizeof(struct vmpacket_descriptor)
894
895/* Maximum # of contiguous data ranges that can make up a trasmitted packet.
896 * Typically it's the max SKB fragments plus 2 for the rndis packet and the
897 * linear portion of the SKB. But if MAX_SKB_FRAGS is large, the value may
898 * need to be limited to MAX_PAGE_BUFFER_COUNT, which is the max # of entries
899 * in a GPA direct packet sent to netvsp over VMBus.
900 */
901#if MAX_SKB_FRAGS + 2 < MAX_PAGE_BUFFER_COUNT
902#define MAX_DATA_RANGES (MAX_SKB_FRAGS + 2)
903#else
904#define MAX_DATA_RANGES MAX_PAGE_BUFFER_COUNT
905#endif
906
907/* Estimated requestor size:
908 * out_ring_size/min_out_msg_size + in_ring_size/min_in_msg_size
909 */
910static inline u32 netvsc_rqstor_size(unsigned long ringbytes)
911{
912 return ringbytes / NETVSC_MIN_OUT_MSG_SIZE +
913 ringbytes / NETVSC_MIN_IN_MSG_SIZE;
914}
915
916/* XFER PAGE packets can specify a maximum of 375 ranges for NDIS >= 6.0
917 * and a maximum of 64 ranges for NDIS < 6.0 with no RSC; with RSC, this
918 * limit is raised to 562 (= NVSP_RSC_MAX).
919 */
920#define NETVSC_MAX_XFER_PAGE_RANGES NVSP_RSC_MAX
921#define NETVSC_XFER_HEADER_SIZE(rng_cnt) \
922 (offsetof(struct vmtransfer_page_packet_header, ranges) + \
923 (rng_cnt) * sizeof(struct vmtransfer_page_range))
924#define NETVSC_MAX_PKT_SIZE (NETVSC_XFER_HEADER_SIZE(NETVSC_MAX_XFER_PAGE_RANGES) + \
925 sizeof(struct nvsp_message) + (sizeof(u32) * VRSS_SEND_TAB_SIZE))
926
927struct multi_send_data {
928 struct sk_buff *skb; /* skb containing the pkt */
929 struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
930 u32 count; /* counter of batched packets */
931};
932
933struct recv_comp_data {
934 u64 tid; /* transaction id */
935 u32 status;
936};
937
938struct multi_recv_comp {
939 struct recv_comp_data *slots;
940 u32 first; /* first data entry */
941 u32 next; /* next entry for writing */
942};
943
944#define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */
945
946struct nvsc_rsc {
947 struct ndis_pkt_8021q_info vlan;
948 struct ndis_tcp_ip_checksum_info csum_info;
949 u32 hash_info;
950 u8 ppi_flags; /* valid/present bits for the above PPIs */
951 u8 is_last; /* last RNDIS msg in a vmtransfer_page */
952 u32 cnt; /* #fragments in an RSC packet */
953 u32 pktlen; /* Full packet length */
954 void *data[NVSP_RSC_MAX];
955 u32 len[NVSP_RSC_MAX];
956};
957
958#define NVSC_RSC_VLAN BIT(0) /* valid/present bit for 'vlan' */
959#define NVSC_RSC_CSUM_INFO BIT(1) /* valid/present bit for 'csum_info' */
960#define NVSC_RSC_HASH_INFO BIT(2) /* valid/present bit for 'hash_info' */
961
962struct netvsc_stats_tx {
963 u64 packets;
964 u64 bytes;
965 u64 xdp_xmit;
966 struct u64_stats_sync syncp;
967};
968
969struct netvsc_stats_rx {
970 u64 packets;
971 u64 bytes;
972 u64 broadcast;
973 u64 multicast;
974 u64 xdp_drop;
975 u64 xdp_redirect;
976 u64 xdp_tx;
977 struct u64_stats_sync syncp;
978};
979
980struct netvsc_ethtool_stats {
981 unsigned long tx_scattered;
982 unsigned long tx_no_memory;
983 unsigned long tx_no_space;
984 unsigned long tx_too_big;
985 unsigned long tx_busy;
986 unsigned long tx_send_full;
987 unsigned long rx_comp_busy;
988 unsigned long rx_no_memory;
989 unsigned long stop_queue;
990 unsigned long wake_queue;
991 unsigned long vlan_error;
992};
993
994struct netvsc_ethtool_pcpu_stats {
995 u64 rx_packets;
996 u64 rx_bytes;
997 u64 tx_packets;
998 u64 tx_bytes;
999 u64 vf_rx_packets;
1000 u64 vf_rx_bytes;
1001 u64 vf_tx_packets;
1002 u64 vf_tx_bytes;
1003};
1004
1005struct netvsc_vf_pcpu_stats {
1006 u64 rx_packets;
1007 u64 rx_bytes;
1008 u64 tx_packets;
1009 u64 tx_bytes;
1010 struct u64_stats_sync syncp;
1011 u32 tx_dropped;
1012};
1013
1014struct netvsc_reconfig {
1015 struct list_head list;
1016 u32 event;
1017};
1018
1019/* L4 hash bits for different protocols */
1020#define HV_TCP4_L4HASH 1
1021#define HV_TCP6_L4HASH 2
1022#define HV_UDP4_L4HASH 4
1023#define HV_UDP6_L4HASH 8
1024#define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
1025 HV_UDP6_L4HASH)
1026
1027/* The context of the netvsc device */
1028struct net_device_context {
1029 /* point back to our device context */
1030 struct hv_device *device_ctx;
1031 /* netvsc_device */
1032 struct netvsc_device __rcu *nvdev;
1033 /* list of netvsc net_devices */
1034 struct list_head list;
1035 /* reconfigure work */
1036 struct delayed_work dwork;
1037 /* last reconfig time */
1038 unsigned long last_reconfig;
1039 /* reconfig events */
1040 struct list_head reconfig_events;
1041 /* list protection */
1042 spinlock_t lock;
1043
1044 u32 msg_enable; /* debug level */
1045
1046 u32 tx_checksum_mask;
1047
1048 u32 tx_table[VRSS_SEND_TAB_SIZE];
1049
1050 u16 *rx_table;
1051
1052 u32 rx_table_sz;
1053
1054 /* Ethtool settings */
1055 u8 duplex;
1056 u32 speed;
1057 u32 l4_hash; /* L4 hash settings */
1058 struct netvsc_ethtool_stats eth_stats;
1059
1060 /* State to manage the associated VF interface. */
1061 struct net_device __rcu *vf_netdev;
1062 struct netvsc_vf_pcpu_stats __percpu *vf_stats;
1063 struct delayed_work vf_takeover;
1064 struct delayed_work vfns_work;
1065
1066 /* 1: allocated, serial number is valid. 0: not allocated */
1067 u32 vf_alloc;
1068 /* Serial number of the VF to team with */
1069 u32 vf_serial;
1070 /* completion variable to confirm vf association */
1071 struct completion vf_add;
1072 /* Is the current data path through the VF NIC? */
1073 bool data_path_is_vf;
1074
1075 /* Used to temporarily save the config info across hibernation */
1076 struct netvsc_device_info *saved_netvsc_dev_info;
1077};
1078
1079void netvsc_vfns_work(struct work_struct *w);
1080
1081/* Azure hosts don't support non-TCP port numbers in hashing for fragmented
1082 * packets. We can use ethtool to change UDP hash level when necessary.
1083 */
1084static inline u32 netvsc_get_hash(struct sk_buff *skb,
1085 const struct net_device_context *ndc)
1086{
1087 struct flow_keys flow;
1088 u32 hash, pkt_proto = 0;
1089 static u32 hashrnd __read_mostly;
1090
1091 net_get_random_once(&hashrnd, sizeof(hashrnd));
1092
1093 if (!skb_flow_dissect_flow_keys(skb, flow: &flow, flags: 0))
1094 return 0;
1095
1096 switch (flow.basic.ip_proto) {
1097 case IPPROTO_TCP:
1098 if (flow.basic.n_proto == htons(ETH_P_IP))
1099 pkt_proto = HV_TCP4_L4HASH;
1100 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1101 pkt_proto = HV_TCP6_L4HASH;
1102
1103 break;
1104
1105 case IPPROTO_UDP:
1106 if (flow.basic.n_proto == htons(ETH_P_IP))
1107 pkt_proto = HV_UDP4_L4HASH;
1108 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1109 pkt_proto = HV_UDP6_L4HASH;
1110
1111 break;
1112 }
1113
1114 if (pkt_proto & ndc->l4_hash) {
1115 return skb_get_hash(skb);
1116 } else {
1117 if (flow.basic.n_proto == htons(ETH_P_IP))
1118 hash = jhash2(k: (u32 *)&flow.addrs.v4addrs, length: 2, initval: hashrnd);
1119 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1120 hash = jhash2(k: (u32 *)&flow.addrs.v6addrs, length: 8, initval: hashrnd);
1121 else
1122 return 0;
1123
1124 __skb_set_sw_hash(skb, hash, is_l4: false);
1125 }
1126
1127 return hash;
1128}
1129
1130/* Per channel data */
1131struct netvsc_channel {
1132 struct vmbus_channel *channel;
1133 struct netvsc_device *net_device;
1134 void *recv_buf; /* buffer to copy packets out from the receive buffer */
1135 const struct vmpacket_descriptor *desc;
1136 struct napi_struct napi;
1137 struct multi_send_data msd;
1138 struct multi_recv_comp mrc;
1139 atomic_t queue_sends;
1140 struct nvsc_rsc rsc;
1141
1142 struct bpf_prog __rcu *bpf_prog;
1143 struct xdp_rxq_info xdp_rxq;
1144 bool xdp_flush;
1145
1146 struct netvsc_stats_tx tx_stats;
1147 struct netvsc_stats_rx rx_stats;
1148};
1149
1150/* Per netvsc device */
1151struct netvsc_device {
1152 u32 nvsp_version;
1153
1154 wait_queue_head_t wait_drain;
1155 bool destroy;
1156 bool tx_disable; /* if true, do not wake up queue again */
1157
1158 /* Receive buffer allocated by us but manages by NetVSP */
1159 void *recv_buf;
1160 u32 recv_buf_size; /* allocated bytes */
1161 struct vmbus_gpadl recv_buf_gpadl_handle;
1162 u32 recv_section_cnt;
1163 u32 recv_section_size;
1164 u32 recv_completion_cnt;
1165
1166 /* Send buffer allocated by us */
1167 void *send_buf;
1168 u32 send_buf_size;
1169 struct vmbus_gpadl send_buf_gpadl_handle;
1170 u32 send_section_cnt;
1171 u32 send_section_size;
1172 unsigned long *send_section_map;
1173
1174 /* Used for NetVSP initialization protocol */
1175 struct completion channel_init_wait;
1176 struct nvsp_message channel_init_pkt;
1177
1178 struct nvsp_message revoke_packet;
1179
1180 u32 max_chn;
1181 u32 num_chn;
1182
1183 u32 netvsc_gso_max_size;
1184
1185 atomic_t open_chn;
1186 struct work_struct subchan_work;
1187 wait_queue_head_t subchan_open;
1188
1189 struct rndis_device *extension;
1190
1191 u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
1192 u32 pkt_align; /* alignment bytes, e.g. 8 */
1193
1194 struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];
1195
1196 struct rcu_head rcu;
1197};
1198
1199/* NdisInitialize message */
1200struct rndis_initialize_request {
1201 u32 req_id;
1202 u32 major_ver;
1203 u32 minor_ver;
1204 u32 max_xfer_size;
1205};
1206
1207/* Response to NdisInitialize */
1208struct rndis_initialize_complete {
1209 u32 req_id;
1210 u32 status;
1211 u32 major_ver;
1212 u32 minor_ver;
1213 u32 dev_flags;
1214 u32 medium;
1215 u32 max_pkt_per_msg;
1216 u32 max_xfer_size;
1217 u32 pkt_alignment_factor;
1218 u32 af_list_offset;
1219 u32 af_list_size;
1220};
1221
1222/* Call manager devices only: Information about an address family */
1223/* supported by the device is appended to the response to NdisInitialize. */
1224struct rndis_co_address_family {
1225 u32 address_family;
1226 u32 major_ver;
1227 u32 minor_ver;
1228};
1229
1230/* NdisHalt message */
1231struct rndis_halt_request {
1232 u32 req_id;
1233};
1234
1235/* NdisQueryRequest message */
1236struct rndis_query_request {
1237 u32 req_id;
1238 u32 oid;
1239 u32 info_buflen;
1240 u32 info_buf_offset;
1241 u32 dev_vc_handle;
1242};
1243
1244/* Response to NdisQueryRequest */
1245struct rndis_query_complete {
1246 u32 req_id;
1247 u32 status;
1248 u32 info_buflen;
1249 u32 info_buf_offset;
1250};
1251
1252/* NdisSetRequest message */
1253struct rndis_set_request {
1254 u32 req_id;
1255 u32 oid;
1256 u32 info_buflen;
1257 u32 info_buf_offset;
1258 u32 dev_vc_handle;
1259 u8 info_buf[];
1260};
1261
1262/* Response to NdisSetRequest */
1263struct rndis_set_complete {
1264 u32 req_id;
1265 u32 status;
1266};
1267
1268/* NdisReset message */
1269struct rndis_reset_request {
1270 u32 reserved;
1271};
1272
1273/* Response to NdisReset */
1274struct rndis_reset_complete {
1275 u32 status;
1276 u32 addressing_reset;
1277};
1278
1279/* NdisMIndicateStatus message */
1280struct rndis_indicate_status {
1281 u32 status;
1282 u32 status_buflen;
1283 u32 status_buf_offset;
1284};
1285
1286/* Diagnostic information passed as the status buffer in */
1287/* struct rndis_indicate_status messages signifying error conditions. */
1288struct rndis_diagnostic_info {
1289 u32 diag_status;
1290 u32 error_offset;
1291};
1292
1293/* NdisKeepAlive message */
1294struct rndis_keepalive_request {
1295 u32 req_id;
1296};
1297
1298/* Response to NdisKeepAlive */
1299struct rndis_keepalive_complete {
1300 u32 req_id;
1301 u32 status;
1302};
1303
1304/*
1305 * Data message. All Offset fields contain byte offsets from the beginning of
1306 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
1307 * to 0 for connectionless data, otherwise it contains the VC handle.
1308 */
1309struct rndis_packet {
1310 u32 data_offset;
1311 u32 data_len;
1312 u32 oob_data_offset;
1313 u32 oob_data_len;
1314 u32 num_oob_data_elements;
1315 u32 per_pkt_info_offset;
1316 u32 per_pkt_info_len;
1317 u32 vc_handle;
1318 u32 reserved;
1319};
1320
1321/* Optional Out of Band data associated with a Data message. */
1322struct rndis_oobd {
1323 u32 size;
1324 u32 type;
1325 u32 class_info_offset;
1326};
1327
1328/* Packet extension field contents associated with a Data message. */
1329struct rndis_per_packet_info {
1330 u32 size;
1331 u32 type:31;
1332 u32 internal:1;
1333 u32 ppi_offset;
1334};
1335
1336enum ndis_per_pkt_info_type {
1337 TCPIP_CHKSUM_PKTINFO,
1338 IPSEC_PKTINFO,
1339 TCP_LARGESEND_PKTINFO,
1340 CLASSIFICATION_HANDLE_PKTINFO,
1341 NDIS_RESERVED,
1342 SG_LIST_PKTINFO,
1343 IEEE_8021Q_INFO,
1344 ORIGINAL_PKTINFO,
1345 PACKET_CANCEL_ID,
1346 NBL_HASH_VALUE = PACKET_CANCEL_ID,
1347 ORIGINAL_NET_BUFLIST,
1348 CACHED_NET_BUFLIST,
1349 SHORT_PKT_PADINFO,
1350 MAX_PER_PKT_INFO
1351};
1352
1353enum rndis_per_pkt_info_interal_type {
1354 RNDIS_PKTINFO_ID = 1,
1355 /* Add more members here */
1356
1357 RNDIS_PKTINFO_MAX
1358};
1359
1360#define RNDIS_PKTINFO_SUBALLOC BIT(0)
1361#define RNDIS_PKTINFO_1ST_FRAG BIT(1)
1362#define RNDIS_PKTINFO_LAST_FRAG BIT(2)
1363
1364#define RNDIS_PKTINFO_ID_V1 1
1365
1366struct rndis_pktinfo_id {
1367 u8 ver;
1368 u8 flag;
1369 u16 pkt_id;
1370};
1371
1372struct ndis_object_header {
1373 u8 type;
1374 u8 revision;
1375 u16 size;
1376};
1377
1378#define NDIS_OBJECT_TYPE_DEFAULT 0x80
1379#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
1380#define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
1381#define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
1382
1383#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
1384#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
1385#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
1386#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
1387#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
1388#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
1389#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
1390#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
1391#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
1392#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
1393
1394#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
1395#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
1396#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
1397
1398#define VERSION_4_OFFLOAD_SIZE 22
1399/*
1400 * New offload OIDs for NDIS 6
1401 */
1402#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
1403#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
1404#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
1405#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
1406#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
1407#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
1408
1409/*
1410 * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
1411 * ndis_type: NDIS_OBJTYPE_OFFLOAD
1412 */
1413
1414#define NDIS_OFFLOAD_ENCAP_NONE 0x0000
1415#define NDIS_OFFLOAD_ENCAP_NULL 0x0001
1416#define NDIS_OFFLOAD_ENCAP_8023 0x0002
1417#define NDIS_OFFLOAD_ENCAP_8023PQ 0x0004
1418#define NDIS_OFFLOAD_ENCAP_8023PQ_OOB 0x0008
1419#define NDIS_OFFLOAD_ENCAP_RFC1483 0x0010
1420
1421struct ndis_csum_offload {
1422 u32 ip4_txenc;
1423 u32 ip4_txcsum;
1424#define NDIS_TXCSUM_CAP_IP4OPT 0x001
1425#define NDIS_TXCSUM_CAP_TCP4OPT 0x004
1426#define NDIS_TXCSUM_CAP_TCP4 0x010
1427#define NDIS_TXCSUM_CAP_UDP4 0x040
1428#define NDIS_TXCSUM_CAP_IP4 0x100
1429
1430#define NDIS_TXCSUM_ALL_TCP4 (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
1431
1432 u32 ip4_rxenc;
1433 u32 ip4_rxcsum;
1434#define NDIS_RXCSUM_CAP_IP4OPT 0x001
1435#define NDIS_RXCSUM_CAP_TCP4OPT 0x004
1436#define NDIS_RXCSUM_CAP_TCP4 0x010
1437#define NDIS_RXCSUM_CAP_UDP4 0x040
1438#define NDIS_RXCSUM_CAP_IP4 0x100
1439 u32 ip6_txenc;
1440 u32 ip6_txcsum;
1441#define NDIS_TXCSUM_CAP_IP6EXT 0x001
1442#define NDIS_TXCSUM_CAP_TCP6OPT 0x004
1443#define NDIS_TXCSUM_CAP_TCP6 0x010
1444#define NDIS_TXCSUM_CAP_UDP6 0x040
1445 u32 ip6_rxenc;
1446 u32 ip6_rxcsum;
1447#define NDIS_RXCSUM_CAP_IP6EXT 0x001
1448#define NDIS_RXCSUM_CAP_TCP6OPT 0x004
1449#define NDIS_RXCSUM_CAP_TCP6 0x010
1450#define NDIS_RXCSUM_CAP_UDP6 0x040
1451
1452#define NDIS_TXCSUM_ALL_TCP6 (NDIS_TXCSUM_CAP_TCP6 | \
1453 NDIS_TXCSUM_CAP_TCP6OPT | \
1454 NDIS_TXCSUM_CAP_IP6EXT)
1455};
1456
1457struct ndis_lsov1_offload {
1458 u32 encap;
1459 u32 maxsize;
1460 u32 minsegs;
1461 u32 opts;
1462};
1463
1464struct ndis_ipsecv1_offload {
1465 u32 encap;
1466 u32 ah_esp;
1467 u32 xport_tun;
1468 u32 ip4_opts;
1469 u32 flags;
1470 u32 ip4_ah;
1471 u32 ip4_esp;
1472};
1473
1474struct ndis_lsov2_offload {
1475 u32 ip4_encap;
1476 u32 ip4_maxsz;
1477 u32 ip4_minsg;
1478 u32 ip6_encap;
1479 u32 ip6_maxsz;
1480 u32 ip6_minsg;
1481 u32 ip6_opts;
1482#define NDIS_LSOV2_CAP_IP6EXT 0x001
1483#define NDIS_LSOV2_CAP_TCP6OPT 0x004
1484
1485#define NDIS_LSOV2_CAP_IP6 (NDIS_LSOV2_CAP_IP6EXT | \
1486 NDIS_LSOV2_CAP_TCP6OPT)
1487};
1488
1489struct ndis_ipsecv2_offload {
1490 u32 encap;
1491 u8 ip6;
1492 u8 ip4opt;
1493 u8 ip6ext;
1494 u8 ah;
1495 u8 esp;
1496 u8 ah_esp;
1497 u8 xport;
1498 u8 tun;
1499 u8 xport_tun;
1500 u8 lso;
1501 u8 extseq;
1502 u32 udp_esp;
1503 u32 auth;
1504 u32 crypto;
1505 u32 sa_caps;
1506};
1507
1508struct ndis_rsc_offload {
1509 u8 ip4;
1510 u8 ip6;
1511};
1512
1513struct ndis_encap_offload {
1514 u32 flags;
1515 u32 maxhdr;
1516};
1517
1518struct ndis_offload {
1519 struct ndis_object_header header;
1520 struct ndis_csum_offload csum;
1521 struct ndis_lsov1_offload lsov1;
1522 struct ndis_ipsecv1_offload ipsecv1;
1523 struct ndis_lsov2_offload lsov2;
1524 u32 flags;
1525 /* NDIS >= 6.1 */
1526 struct ndis_ipsecv2_offload ipsecv2;
1527 /* NDIS >= 6.30 */
1528 struct ndis_rsc_offload rsc;
1529 struct ndis_encap_offload encap_gre;
1530};
1531
1532#define NDIS_OFFLOAD_SIZE sizeof(struct ndis_offload)
1533#define NDIS_OFFLOAD_SIZE_6_0 offsetof(struct ndis_offload, ipsecv2)
1534#define NDIS_OFFLOAD_SIZE_6_1 offsetof(struct ndis_offload, rsc)
1535
1536struct ndis_offload_params {
1537 struct ndis_object_header header;
1538 u8 ip_v4_csum;
1539 u8 tcp_ip_v4_csum;
1540 u8 udp_ip_v4_csum;
1541 u8 tcp_ip_v6_csum;
1542 u8 udp_ip_v6_csum;
1543 u8 lso_v1;
1544 u8 ip_sec_v1;
1545 u8 lso_v2_ipv4;
1546 u8 lso_v2_ipv6;
1547 u8 tcp_connection_ip_v4;
1548 u8 tcp_connection_ip_v6;
1549 u32 flags;
1550 u8 ip_sec_v2;
1551 u8 ip_sec_v2_ip_v4;
1552 struct {
1553 u8 rsc_ip_v4;
1554 u8 rsc_ip_v6;
1555 };
1556 struct {
1557 u8 encapsulated_packet_task_offload;
1558 u8 encapsulation_types;
1559 };
1560};
1561
1562struct ndis_tcp_lso_info {
1563 union {
1564 struct {
1565 u32 unused:30;
1566 u32 type:1;
1567 u32 reserved2:1;
1568 } transmit;
1569 struct {
1570 u32 mss:20;
1571 u32 tcp_header_offset:10;
1572 u32 type:1;
1573 u32 reserved2:1;
1574 } lso_v1_transmit;
1575 struct {
1576 u32 tcp_payload:30;
1577 u32 type:1;
1578 u32 reserved2:1;
1579 } lso_v1_transmit_complete;
1580 struct {
1581 u32 mss:20;
1582 u32 tcp_header_offset:10;
1583 u32 type:1;
1584 u32 ip_version:1;
1585 } lso_v2_transmit;
1586 struct {
1587 u32 reserved:30;
1588 u32 type:1;
1589 u32 reserved2:1;
1590 } lso_v2_transmit_complete;
1591 u32 value;
1592 };
1593};
1594
1595#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1596 sizeof(struct ndis_pkt_8021q_info))
1597
1598#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1599 sizeof(struct ndis_tcp_ip_checksum_info))
1600
1601#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1602 sizeof(struct ndis_tcp_lso_info))
1603
1604#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1605 sizeof(u32))
1606
1607/* Total size of all PPI data */
1608#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1609 NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1610
1611/* Format of Information buffer passed in a SetRequest for the OID */
1612/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1613struct rndis_config_parameter_info {
1614 u32 parameter_name_offset;
1615 u32 parameter_name_length;
1616 u32 parameter_type;
1617 u32 parameter_value_offset;
1618 u32 parameter_value_length;
1619};
1620
1621/* Values for ParameterType in struct rndis_config_parameter_info */
1622#define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
1623#define RNDIS_CONFIG_PARAM_TYPE_STRING 2
1624
1625/* CONDIS Miniport messages for connection oriented devices */
1626/* that do not implement a call manager. */
1627
1628/* CoNdisMiniportCreateVc message */
1629struct rcondis_mp_create_vc {
1630 u32 req_id;
1631 u32 ndis_vc_handle;
1632};
1633
1634/* Response to CoNdisMiniportCreateVc */
1635struct rcondis_mp_create_vc_complete {
1636 u32 req_id;
1637 u32 dev_vc_handle;
1638 u32 status;
1639};
1640
1641/* CoNdisMiniportDeleteVc message */
1642struct rcondis_mp_delete_vc {
1643 u32 req_id;
1644 u32 dev_vc_handle;
1645};
1646
1647/* Response to CoNdisMiniportDeleteVc */
1648struct rcondis_mp_delete_vc_complete {
1649 u32 req_id;
1650 u32 status;
1651};
1652
1653/* CoNdisMiniportQueryRequest message */
1654struct rcondis_mp_query_request {
1655 u32 req_id;
1656 u32 request_type;
1657 u32 oid;
1658 u32 dev_vc_handle;
1659 u32 info_buflen;
1660 u32 info_buf_offset;
1661};
1662
1663/* CoNdisMiniportSetRequest message */
1664struct rcondis_mp_set_request {
1665 u32 req_id;
1666 u32 request_type;
1667 u32 oid;
1668 u32 dev_vc_handle;
1669 u32 info_buflen;
1670 u32 info_buf_offset;
1671};
1672
1673/* CoNdisIndicateStatus message */
1674struct rcondis_indicate_status {
1675 u32 ndis_vc_handle;
1676 u32 status;
1677 u32 status_buflen;
1678 u32 status_buf_offset;
1679};
1680
1681/* CONDIS Call/VC parameters */
1682struct rcondis_specific_parameters {
1683 u32 parameter_type;
1684 u32 parameter_length;
1685 u32 parameter_lffset;
1686};
1687
1688struct rcondis_media_parameters {
1689 u32 flags;
1690 u32 reserved1;
1691 u32 reserved2;
1692 struct rcondis_specific_parameters media_specific;
1693};
1694
1695struct rndis_flowspec {
1696 u32 token_rate;
1697 u32 token_bucket_size;
1698 u32 peak_bandwidth;
1699 u32 latency;
1700 u32 delay_variation;
1701 u32 service_type;
1702 u32 max_sdu_size;
1703 u32 minimum_policed_size;
1704};
1705
1706struct rcondis_call_manager_parameters {
1707 struct rndis_flowspec transmit;
1708 struct rndis_flowspec receive;
1709 struct rcondis_specific_parameters call_mgr_specific;
1710};
1711
1712/* CoNdisMiniportActivateVc message */
1713struct rcondis_mp_activate_vc_request {
1714 u32 req_id;
1715 u32 flags;
1716 u32 dev_vc_handle;
1717 u32 media_params_offset;
1718 u32 media_params_length;
1719 u32 call_mgr_params_offset;
1720 u32 call_mgr_params_length;
1721};
1722
1723/* Response to CoNdisMiniportActivateVc */
1724struct rcondis_mp_activate_vc_complete {
1725 u32 req_id;
1726 u32 status;
1727};
1728
1729/* CoNdisMiniportDeactivateVc message */
1730struct rcondis_mp_deactivate_vc_request {
1731 u32 req_id;
1732 u32 flags;
1733 u32 dev_vc_handle;
1734};
1735
1736/* Response to CoNdisMiniportDeactivateVc */
1737struct rcondis_mp_deactivate_vc_complete {
1738 u32 req_id;
1739 u32 status;
1740};
1741
1742
1743/* union with all of the RNDIS messages */
1744union rndis_message_container {
1745 struct rndis_packet pkt;
1746 struct rndis_initialize_request init_req;
1747 struct rndis_halt_request halt_req;
1748 struct rndis_query_request query_req;
1749 struct rndis_set_request set_req;
1750 struct rndis_reset_request reset_req;
1751 struct rndis_keepalive_request keep_alive_req;
1752 struct rndis_indicate_status indicate_status;
1753 struct rndis_initialize_complete init_complete;
1754 struct rndis_query_complete query_complete;
1755 struct rndis_set_complete set_complete;
1756 struct rndis_reset_complete reset_complete;
1757 struct rndis_keepalive_complete keep_alive_complete;
1758 struct rcondis_mp_create_vc co_miniport_create_vc;
1759 struct rcondis_mp_delete_vc co_miniport_delete_vc;
1760 struct rcondis_indicate_status co_indicate_status;
1761 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1762 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1763 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1764 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1765 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1766 struct rcondis_mp_deactivate_vc_complete
1767 co_miniport_deactivate_vc_complete;
1768};
1769
1770/* Remote NDIS message format */
1771struct rndis_message {
1772 u32 ndis_msg_type;
1773
1774 /* Total length of this message, from the beginning */
1775 /* of the struct rndis_message, in bytes. */
1776 u32 msg_len;
1777
1778 /* Actual message */
1779 union rndis_message_container msg;
1780};
1781
1782
1783/* Handy macros */
1784
1785/* get the size of an RNDIS message. Pass in the message type, */
1786/* struct rndis_set_request, struct rndis_packet for example */
1787#define RNDIS_MESSAGE_SIZE(msg) \
1788 (sizeof(msg) + (sizeof(struct rndis_message) - \
1789 sizeof(union rndis_message_container)))
1790
1791#define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
1792 sizeof(union rndis_message_container))
1793
1794#define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1795
1796#define NDIS_PACKET_TYPE_DIRECTED 0x00000001
1797#define NDIS_PACKET_TYPE_MULTICAST 0x00000002
1798#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
1799#define NDIS_PACKET_TYPE_BROADCAST 0x00000008
1800#define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
1801#define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
1802#define NDIS_PACKET_TYPE_SMT 0x00000040
1803#define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
1804#define NDIS_PACKET_TYPE_GROUP 0x00000100
1805#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
1806#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
1807#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
1808
1809#define TRANSPORT_INFO_NOT_IP 0
1810#define TRANSPORT_INFO_IPV4_TCP 0x01
1811#define TRANSPORT_INFO_IPV4_UDP 0x02
1812#define TRANSPORT_INFO_IPV6_TCP 0x10
1813#define TRANSPORT_INFO_IPV6_UDP 0x20
1814
1815#define RETRY_US_LO 5000
1816#define RETRY_US_HI 10000
1817#define RETRY_MAX 2000 /* >10 sec */
1818
1819void netvsc_dma_unmap(struct hv_device *hv_dev,
1820 struct hv_netvsc_packet *packet);
1821#endif /* _HYPERV_NET_H */
1822

source code of linux/drivers/net/hyperv/hyperv_net.h