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hv_netvsc: Don't ask for additional head room in the skb
[linux-2.6/btrfs-unstable.git] / drivers / net / hyperv / hyperv_net.h
blob731054ef6da584153f6a7ef2a5bfaffaa80a72a7
1 /*
2 *
3 * Copyright (c) 2011, Microsoft Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Authors:
18 * Haiyang Zhang <haiyangz@microsoft.com>
19 * Hank Janssen <hjanssen@microsoft.com>
20 * K. Y. Srinivasan <kys@microsoft.com>
21 *
22 */
23
24 #ifndef _HYPERV_NET_H
25 #define _HYPERV_NET_H
26
27 #include <linux/list.h>
28 #include <linux/hyperv.h>
29 #include <linux/rndis.h>
30
31 /* RSS related */
32 #define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */
33 #define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */
34
35 #define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
36 #define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
37
38 #define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
39 #define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
40
41 struct ndis_obj_header {
42 u8 type;
43 u8 rev;
44 u16 size;
45 } __packed;
46
47 /* ndis_recv_scale_cap/cap_flag */
48 #define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
49 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR 0x02000000
50 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC 0x04000000
51 #define NDIS_RSS_CAPS_USING_MSI_X 0x08000000
52 #define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS 0x10000000
53 #define NDIS_RSS_CAPS_SUPPORTS_MSI_X 0x20000000
54 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4 0x00000100
55 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6 0x00000200
56 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX 0x00000400
57
58 struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
59 struct ndis_obj_header hdr;
60 u32 cap_flag;
61 u32 num_int_msg;
62 u32 num_recv_que;
63 u16 num_indirect_tabent;
64 } __packed;
65
66
67 /* ndis_recv_scale_param flags */
68 #define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED 0x0001
69 #define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED 0x0002
70 #define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED 0x0004
71 #define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED 0x0008
72 #define NDIS_RSS_PARAM_FLAG_DISABLE_RSS 0x0010
73
74 /* Hash info bits */
75 #define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
76 #define NDIS_HASH_IPV4 0x00000100
77 #define NDIS_HASH_TCP_IPV4 0x00000200
78 #define NDIS_HASH_IPV6 0x00000400
79 #define NDIS_HASH_IPV6_EX 0x00000800
80 #define NDIS_HASH_TCP_IPV6 0x00001000
81 #define NDIS_HASH_TCP_IPV6_EX 0x00002000
82
83 #define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
84 #define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 40
85
86 #define ITAB_NUM 128
87 #define HASH_KEYLEN NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2
88 extern u8 netvsc_hash_key[];
89
90 struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
91 struct ndis_obj_header hdr;
92
93 /* Qualifies the rest of the information */
94 u16 flag;
95
96 /* The base CPU number to do receive processing. not used */
97 u16 base_cpu_number;
98
99 /* This describes the hash function and type being enabled */
100 u32 hashinfo;
101
102 /* The size of indirection table array */
103 u16 indirect_tabsize;
104
105 /* The offset of the indirection table from the beginning of this
106 * structure
107 */
108 u32 indirect_taboffset;
109
110 /* The size of the hash secret key */
111 u16 hashkey_size;
112
113 /* The offset of the secret key from the beginning of this structure */
114 u32 kashkey_offset;
115
116 u32 processor_masks_offset;
117 u32 num_processor_masks;
118 u32 processor_masks_entry_size;
119 };
120
121 /* Fwd declaration */
122 struct ndis_tcp_ip_checksum_info;
123
124 /*
125 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
126 * within the RNDIS
127 *
128 * The size of this structure is less than 48 bytes and we can now
129 * place this structure in the skb->cb field.
130 */
131 struct hv_netvsc_packet {
132 /* Bookkeeping stuff */
133 u8 status;
134 u8 is_data_pkt;
135 u8 xmit_more; /* from skb */
136 u8 cp_partial; /* partial copy into send buffer */
137
138 u8 rmsg_size; /* RNDIS header and PPI size */
139 u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
140 u8 page_buf_cnt;
141 u8 completion_func;
142
143 u16 vlan_tci;
144 u16 q_idx;
145 u32 send_buf_index;
146
147 u32 total_data_buflen;
148 u32 pad1;
149
150
151 u64 send_completion_tid;
152 struct hv_page_buffer *page_buf;
153 };
154
155 struct netvsc_device_info {
156 unsigned char mac_adr[ETH_ALEN];
157 bool link_state; /* 0 - link up, 1 - link down */
158 int ring_size;
159 u32 max_num_vrss_chns;
160 u32 num_chn;
161 };
162
163 enum rndis_device_state {
164 RNDIS_DEV_UNINITIALIZED = 0,
165 RNDIS_DEV_INITIALIZING,
166 RNDIS_DEV_INITIALIZED,
167 RNDIS_DEV_DATAINITIALIZED,
168 };
169
170 struct rndis_device {
171 struct netvsc_device *net_dev;
172
173 enum rndis_device_state state;
174 bool link_state;
175 atomic_t new_req_id;
176
177 spinlock_t request_lock;
178 struct list_head req_list;
179
180 unsigned char hw_mac_adr[ETH_ALEN];
181 };
182
183
184 /* Interface */
185 struct rndis_message;
186 int netvsc_device_add(struct hv_device *device, void *additional_info);
187 int netvsc_device_remove(struct hv_device *device);
188 int netvsc_send(struct hv_device *device,
189 struct hv_netvsc_packet *packet,
190 struct rndis_message *rndis_msg);
191 void netvsc_linkstatus_callback(struct hv_device *device_obj,
192 struct rndis_message *resp);
193 void netvsc_xmit_completion(void *context);
194 int netvsc_recv_callback(struct hv_device *device_obj,
195 struct hv_netvsc_packet *packet,
196 void **data,
197 struct ndis_tcp_ip_checksum_info *csum_info,
198 struct vmbus_channel *channel);
199 void netvsc_channel_cb(void *context);
200 int rndis_filter_open(struct hv_device *dev);
201 int rndis_filter_close(struct hv_device *dev);
202 int rndis_filter_device_add(struct hv_device *dev,
203 void *additional_info);
204 void rndis_filter_device_remove(struct hv_device *dev);
205 int rndis_filter_receive(struct hv_device *dev,
206 struct hv_netvsc_packet *pkt,
207 void **data,
208 struct vmbus_channel *channel);
209
210 int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter);
211 int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac);
212
213 #define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
214
215 #define NVSP_PROTOCOL_VERSION_1 2
216 #define NVSP_PROTOCOL_VERSION_2 0x30002
217 #define NVSP_PROTOCOL_VERSION_4 0x40000
218 #define NVSP_PROTOCOL_VERSION_5 0x50000
219
220 enum {
221 NVSP_MSG_TYPE_NONE = 0,
222
223 /* Init Messages */
224 NVSP_MSG_TYPE_INIT = 1,
225 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
226
227 NVSP_VERSION_MSG_START = 100,
228
229 /* Version 1 Messages */
230 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
231
232 NVSP_MSG1_TYPE_SEND_RECV_BUF,
233 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
234 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
235
236 NVSP_MSG1_TYPE_SEND_SEND_BUF,
237 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
238 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
239
240 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
241 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
242
243 /* Version 2 messages */
244 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
245 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
246 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
247
248 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
249
250 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
251 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
252
253 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
254
255 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
256 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
257
258 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
259 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
260
261 NVSP_MSG2_TYPE_ALLOC_RXBUF,
262 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
263
264 NVSP_MSG2_TYPE_FREE_RXBUF,
265
266 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
267 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
268
269 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
270
271 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
272 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
273
274 NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
275
276 /* Version 4 messages */
277 NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
278 NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
279 NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
280
281 NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
282
283 /* Version 5 messages */
284 NVSP_MSG5_TYPE_OID_QUERY_EX,
285 NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
286 NVSP_MSG5_TYPE_SUBCHANNEL,
287 NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
288
289 NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
290 };
291
292 enum {
293 NVSP_STAT_NONE = 0,
294 NVSP_STAT_SUCCESS,
295 NVSP_STAT_FAIL,
296 NVSP_STAT_PROTOCOL_TOO_NEW,
297 NVSP_STAT_PROTOCOL_TOO_OLD,
298 NVSP_STAT_INVALID_RNDIS_PKT,
299 NVSP_STAT_BUSY,
300 NVSP_STAT_PROTOCOL_UNSUPPORTED,
301 NVSP_STAT_MAX,
302 };
303
304 struct nvsp_message_header {
305 u32 msg_type;
306 };
307
308 /* Init Messages */
309
310 /*
311 * This message is used by the VSC to initialize the channel after the channels
312 * has been opened. This message should never include anything other then
313 * versioning (i.e. this message will be the same for ever).
314 */
315 struct nvsp_message_init {
316 u32 min_protocol_ver;
317 u32 max_protocol_ver;
318 } __packed;
319
320 /*
321 * This message is used by the VSP to complete the initialization of the
322 * channel. This message should never include anything other then versioning
323 * (i.e. this message will be the same for ever).
324 */
325 struct nvsp_message_init_complete {
326 u32 negotiated_protocol_ver;
327 u32 max_mdl_chain_len;
328 u32 status;
329 } __packed;
330
331 union nvsp_message_init_uber {
332 struct nvsp_message_init init;
333 struct nvsp_message_init_complete init_complete;
334 } __packed;
335
336 /* Version 1 Messages */
337
338 /*
339 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
340 * can use this information when handling OIDs sent by the VSC.
341 */
342 struct nvsp_1_message_send_ndis_version {
343 u32 ndis_major_ver;
344 u32 ndis_minor_ver;
345 } __packed;
346
347 /*
348 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
349 * can then use the receive buffer to send data to the VSC.
350 */
351 struct nvsp_1_message_send_receive_buffer {
352 u32 gpadl_handle;
353 u16 id;
354 } __packed;
355
356 struct nvsp_1_receive_buffer_section {
357 u32 offset;
358 u32 sub_alloc_size;
359 u32 num_sub_allocs;
360 u32 end_offset;
361 } __packed;
362
363 /*
364 * This message is used by the VSP to acknowledge a receive buffer send by the
365 * VSC. This message must be sent by the VSP before the VSP uses the receive
366 * buffer.
367 */
368 struct nvsp_1_message_send_receive_buffer_complete {
369 u32 status;
370 u32 num_sections;
371
372 /*
373 * The receive buffer is split into two parts, a large suballocation
374 * section and a small suballocation section. These sections are then
375 * suballocated by a certain size.
376 */
377
378 /*
379 * For example, the following break up of the receive buffer has 6
380 * large suballocations and 10 small suballocations.
381 */
382
383 /*
384 * | Large Section | | Small Section |
385 * ------------------------------------------------------------
386 * | | | | | | | | | | | | | | | | | |
387 * | |
388 * LargeOffset SmallOffset
389 */
390
391 struct nvsp_1_receive_buffer_section sections[1];
392 } __packed;
393
394 /*
395 * This message is sent by the VSC to revoke the receive buffer. After the VSP
396 * completes this transaction, the vsp should never use the receive buffer
397 * again.
398 */
399 struct nvsp_1_message_revoke_receive_buffer {
400 u16 id;
401 };
402
403 /*
404 * This message is used by the VSC to send a send buffer to the VSP. The VSC
405 * can then use the send buffer to send data to the VSP.
406 */
407 struct nvsp_1_message_send_send_buffer {
408 u32 gpadl_handle;
409 u16 id;
410 } __packed;
411
412 /*
413 * This message is used by the VSP to acknowledge a send buffer sent by the
414 * VSC. This message must be sent by the VSP before the VSP uses the sent
415 * buffer.
416 */
417 struct nvsp_1_message_send_send_buffer_complete {
418 u32 status;
419
420 /*
421 * The VSC gets to choose the size of the send buffer and the VSP gets
422 * to choose the sections size of the buffer. This was done to enable
423 * dynamic reconfigurations when the cost of GPA-direct buffers
424 * decreases.
425 */
426 u32 section_size;
427 } __packed;
428
429 /*
430 * This message is sent by the VSC to revoke the send buffer. After the VSP
431 * completes this transaction, the vsp should never use the send buffer again.
432 */
433 struct nvsp_1_message_revoke_send_buffer {
434 u16 id;
435 };
436
437 /*
438 * This message is used by both the VSP and the VSC to send a RNDIS message to
439 * the opposite channel endpoint.
440 */
441 struct nvsp_1_message_send_rndis_packet {
442 /*
443 * This field is specified by RNIDS. They assume there's two different
444 * channels of communication. However, the Network VSP only has one.
445 * Therefore, the channel travels with the RNDIS packet.
446 */
447 u32 channel_type;
448
449 /*
450 * This field is used to send part or all of the data through a send
451 * buffer. This values specifies an index into the send buffer. If the
452 * index is 0xFFFFFFFF, then the send buffer is not being used and all
453 * of the data was sent through other VMBus mechanisms.
454 */
455 u32 send_buf_section_index;
456 u32 send_buf_section_size;
457 } __packed;
458
459 /*
460 * This message is used by both the VSP and the VSC to complete a RNDIS message
461 * to the opposite channel endpoint. At this point, the initiator of this
462 * message cannot use any resources associated with the original RNDIS packet.
463 */
464 struct nvsp_1_message_send_rndis_packet_complete {
465 u32 status;
466 };
467
468 union nvsp_1_message_uber {
469 struct nvsp_1_message_send_ndis_version send_ndis_ver;
470
471 struct nvsp_1_message_send_receive_buffer send_recv_buf;
472 struct nvsp_1_message_send_receive_buffer_complete
473 send_recv_buf_complete;
474 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
475
476 struct nvsp_1_message_send_send_buffer send_send_buf;
477 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
478 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
479
480 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
481 struct nvsp_1_message_send_rndis_packet_complete
482 send_rndis_pkt_complete;
483 } __packed;
484
485
486 /*
487 * Network VSP protocol version 2 messages:
488 */
489 struct nvsp_2_vsc_capability {
490 union {
491 u64 data;
492 struct {
493 u64 vmq:1;
494 u64 chimney:1;
495 u64 sriov:1;
496 u64 ieee8021q:1;
497 u64 correlation_id:1;
498 };
499 };
500 } __packed;
501
502 struct nvsp_2_send_ndis_config {
503 u32 mtu;
504 u32 reserved;
505 struct nvsp_2_vsc_capability capability;
506 } __packed;
507
508 /* Allocate receive buffer */
509 struct nvsp_2_alloc_rxbuf {
510 /* Allocation ID to match the allocation request and response */
511 u32 alloc_id;
512
513 /* Length of the VM shared memory receive buffer that needs to
514 * be allocated
515 */
516 u32 len;
517 } __packed;
518
519 /* Allocate receive buffer complete */
520 struct nvsp_2_alloc_rxbuf_comp {
521 /* The NDIS_STATUS code for buffer allocation */
522 u32 status;
523
524 u32 alloc_id;
525
526 /* GPADL handle for the allocated receive buffer */
527 u32 gpadl_handle;
528
529 /* Receive buffer ID */
530 u64 recv_buf_id;
531 } __packed;
532
533 struct nvsp_2_free_rxbuf {
534 u64 recv_buf_id;
535 } __packed;
536
537 union nvsp_2_message_uber {
538 struct nvsp_2_send_ndis_config send_ndis_config;
539 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
540 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
541 struct nvsp_2_free_rxbuf free_rxbuf;
542 } __packed;
543
544 struct nvsp_4_send_vf_association {
545 /* 1: allocated, serial number is valid. 0: not allocated */
546 u32 allocated;
547
548 /* Serial number of the VF to team with */
549 u32 serial;
550 } __packed;
551
552 enum nvsp_vm_datapath {
553 NVSP_DATAPATH_SYNTHETIC = 0,
554 NVSP_DATAPATH_VF,
555 NVSP_DATAPATH_MAX
556 };
557
558 struct nvsp_4_sw_datapath {
559 u32 active_datapath; /* active data path in VM */
560 } __packed;
561
562 union nvsp_4_message_uber {
563 struct nvsp_4_send_vf_association vf_assoc;
564 struct nvsp_4_sw_datapath active_dp;
565 } __packed;
566
567 enum nvsp_subchannel_operation {
568 NVSP_SUBCHANNEL_NONE = 0,
569 NVSP_SUBCHANNEL_ALLOCATE,
570 NVSP_SUBCHANNEL_MAX
571 };
572
573 struct nvsp_5_subchannel_request {
574 u32 op;
575 u32 num_subchannels;
576 } __packed;
577
578 struct nvsp_5_subchannel_complete {
579 u32 status;
580 u32 num_subchannels; /* Actual number of subchannels allocated */
581 } __packed;
582
583 struct nvsp_5_send_indirect_table {
584 /* The number of entries in the send indirection table */
585 u32 count;
586
587 /* The offset of the send indireciton table from top of this struct.
588 * The send indirection table tells which channel to put the send
589 * traffic on. Each entry is a channel number.
590 */
591 u32 offset;
592 } __packed;
593
594 union nvsp_5_message_uber {
595 struct nvsp_5_subchannel_request subchn_req;
596 struct nvsp_5_subchannel_complete subchn_comp;
597 struct nvsp_5_send_indirect_table send_table;
598 } __packed;
599
600 union nvsp_all_messages {
601 union nvsp_message_init_uber init_msg;
602 union nvsp_1_message_uber v1_msg;
603 union nvsp_2_message_uber v2_msg;
604 union nvsp_4_message_uber v4_msg;
605 union nvsp_5_message_uber v5_msg;
606 } __packed;
607
608 /* ALL Messages */
609 struct nvsp_message {
610 struct nvsp_message_header hdr;
611 union nvsp_all_messages msg;
612 } __packed;
613
614
615 #define NETVSC_MTU 65536
616 #define NETVSC_MTU_MIN 68
617
618 #define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
619 #define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */
620 #define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
621 #define NETVSC_INVALID_INDEX -1
622
623
624 #define NETVSC_RECEIVE_BUFFER_ID 0xcafe
625 #define NETVSC_SEND_BUFFER_ID 0
626
627 #define NETVSC_PACKET_SIZE 4096
628
629 #define VRSS_SEND_TAB_SIZE 16
630
631 #define RNDIS_MAX_PKT_DEFAULT 8
632 #define RNDIS_PKT_ALIGN_DEFAULT 8
633
634 struct multi_send_data {
635 spinlock_t lock; /* protect struct multi_send_data */
636 struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
637 u32 count; /* counter of batched packets */
638 };
639
640 struct netvsc_stats {
641 u64 packets;
642 u64 bytes;
643 struct u64_stats_sync syncp;
644 };
645
646 struct netvsc_reconfig {
647 struct list_head list;
648 u32 event;
649 };
650
651 /* The context of the netvsc device */
652 struct net_device_context {
653 /* point back to our device context */
654 struct hv_device *device_ctx;
655 /* reconfigure work */
656 struct delayed_work dwork;
657 /* last reconfig time */
658 unsigned long last_reconfig;
659 /* reconfig events */
660 struct list_head reconfig_events;
661 /* list protection */
662 spinlock_t lock;
663
664 struct work_struct work;
665 u32 msg_enable; /* debug level */
666
667 struct netvsc_stats __percpu *tx_stats;
668 struct netvsc_stats __percpu *rx_stats;
669 };
670
671 /* Per netvsc device */
672 struct netvsc_device {
673 struct hv_device *dev;
674
675 u32 nvsp_version;
676
677 atomic_t num_outstanding_sends;
678 wait_queue_head_t wait_drain;
679 bool start_remove;
680 bool destroy;
681
682 /* Receive buffer allocated by us but manages by NetVSP */
683 void *recv_buf;
684 u32 recv_buf_size;
685 u32 recv_buf_gpadl_handle;
686 u32 recv_section_cnt;
687 struct nvsp_1_receive_buffer_section *recv_section;
688
689 /* Send buffer allocated by us */
690 void *send_buf;
691 u32 send_buf_size;
692 u32 send_buf_gpadl_handle;
693 u32 send_section_cnt;
694 u32 send_section_size;
695 unsigned long *send_section_map;
696 int map_words;
697
698 /* Used for NetVSP initialization protocol */
699 struct completion channel_init_wait;
700 struct nvsp_message channel_init_pkt;
701
702 struct nvsp_message revoke_packet;
703 /* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
704
705 struct net_device *ndev;
706
707 struct vmbus_channel *chn_table[NR_CPUS];
708 u32 send_table[VRSS_SEND_TAB_SIZE];
709 u32 max_chn;
710 u32 num_chn;
711 spinlock_t sc_lock; /* Protects num_sc_offered variable */
712 u32 num_sc_offered;
713 atomic_t queue_sends[NR_CPUS];
714
715 /* Holds rndis device info */
716 void *extension;
717
718 int ring_size;
719
720 /* The primary channel callback buffer */
721 unsigned char *cb_buffer;
722 /* The sub channel callback buffer */
723 unsigned char *sub_cb_buf;
724
725 struct multi_send_data msd[NR_CPUS];
726 u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
727 u32 pkt_align; /* alignment bytes, e.g. 8 */
728
729 /* The net device context */
730 struct net_device_context *nd_ctx;
731
732 /* 1: allocated, serial number is valid. 0: not allocated */
733 u32 vf_alloc;
734 /* Serial number of the VF to team with */
735 u32 vf_serial;
736 };
737
738 /* NdisInitialize message */
739 struct rndis_initialize_request {
740 u32 req_id;
741 u32 major_ver;
742 u32 minor_ver;
743 u32 max_xfer_size;
744 };
745
746 /* Response to NdisInitialize */
747 struct rndis_initialize_complete {
748 u32 req_id;
749 u32 status;
750 u32 major_ver;
751 u32 minor_ver;
752 u32 dev_flags;
753 u32 medium;
754 u32 max_pkt_per_msg;
755 u32 max_xfer_size;
756 u32 pkt_alignment_factor;
757 u32 af_list_offset;
758 u32 af_list_size;
759 };
760
761 /* Call manager devices only: Information about an address family */
762 /* supported by the device is appended to the response to NdisInitialize. */
763 struct rndis_co_address_family {
764 u32 address_family;
765 u32 major_ver;
766 u32 minor_ver;
767 };
768
769 /* NdisHalt message */
770 struct rndis_halt_request {
771 u32 req_id;
772 };
773
774 /* NdisQueryRequest message */
775 struct rndis_query_request {
776 u32 req_id;
777 u32 oid;
778 u32 info_buflen;
779 u32 info_buf_offset;
780 u32 dev_vc_handle;
781 };
782
783 /* Response to NdisQueryRequest */
784 struct rndis_query_complete {
785 u32 req_id;
786 u32 status;
787 u32 info_buflen;
788 u32 info_buf_offset;
789 };
790
791 /* NdisSetRequest message */
792 struct rndis_set_request {
793 u32 req_id;
794 u32 oid;
795 u32 info_buflen;
796 u32 info_buf_offset;
797 u32 dev_vc_handle;
798 };
799
800 /* Response to NdisSetRequest */
801 struct rndis_set_complete {
802 u32 req_id;
803 u32 status;
804 };
805
806 /* NdisReset message */
807 struct rndis_reset_request {
808 u32 reserved;
809 };
810
811 /* Response to NdisReset */
812 struct rndis_reset_complete {
813 u32 status;
814 u32 addressing_reset;
815 };
816
817 /* NdisMIndicateStatus message */
818 struct rndis_indicate_status {
819 u32 status;
820 u32 status_buflen;
821 u32 status_buf_offset;
822 };
823
824 /* Diagnostic information passed as the status buffer in */
825 /* struct rndis_indicate_status messages signifying error conditions. */
826 struct rndis_diagnostic_info {
827 u32 diag_status;
828 u32 error_offset;
829 };
830
831 /* NdisKeepAlive message */
832 struct rndis_keepalive_request {
833 u32 req_id;
834 };
835
836 /* Response to NdisKeepAlive */
837 struct rndis_keepalive_complete {
838 u32 req_id;
839 u32 status;
840 };
841
842 /*
843 * Data message. All Offset fields contain byte offsets from the beginning of
844 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
845 * to 0 for connectionless data, otherwise it contains the VC handle.
846 */
847 struct rndis_packet {
848 u32 data_offset;
849 u32 data_len;
850 u32 oob_data_offset;
851 u32 oob_data_len;
852 u32 num_oob_data_elements;
853 u32 per_pkt_info_offset;
854 u32 per_pkt_info_len;
855 u32 vc_handle;
856 u32 reserved;
857 };
858
859 /* Optional Out of Band data associated with a Data message. */
860 struct rndis_oobd {
861 u32 size;
862 u32 type;
863 u32 class_info_offset;
864 };
865
866 /* Packet extension field contents associated with a Data message. */
867 struct rndis_per_packet_info {
868 u32 size;
869 u32 type;
870 u32 ppi_offset;
871 };
872
873 enum ndis_per_pkt_info_type {
874 TCPIP_CHKSUM_PKTINFO,
875 IPSEC_PKTINFO,
876 TCP_LARGESEND_PKTINFO,
877 CLASSIFICATION_HANDLE_PKTINFO,
878 NDIS_RESERVED,
879 SG_LIST_PKTINFO,
880 IEEE_8021Q_INFO,
881 ORIGINAL_PKTINFO,
882 PACKET_CANCEL_ID,
883 NBL_HASH_VALUE = PACKET_CANCEL_ID,
884 ORIGINAL_NET_BUFLIST,
885 CACHED_NET_BUFLIST,
886 SHORT_PKT_PADINFO,
887 MAX_PER_PKT_INFO
888 };
889
890 struct ndis_pkt_8021q_info {
891 union {
892 struct {
893 u32 pri:3; /* User Priority */
894 u32 cfi:1; /* Canonical Format ID */
895 u32 vlanid:12; /* VLAN ID */
896 u32 reserved:16;
897 };
898 u32 value;
899 };
900 };
901
902 struct ndis_oject_header {
903 u8 type;
904 u8 revision;
905 u16 size;
906 };
907
908 #define NDIS_OBJECT_TYPE_DEFAULT 0x80
909 #define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
910 #define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
911 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
912 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
913 #define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
914 #define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
915 #define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
916 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
917 #define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
918 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
919 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
920
921 #define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
922 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
923 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
924
925 #define VERSION_4_OFFLOAD_SIZE 22
926 /*
927 * New offload OIDs for NDIS 6
928 */
929 #define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
930 #define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
931 #define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
932 #define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
933 #define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
934 #define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
935
936 struct ndis_offload_params {
937 struct ndis_oject_header header;
938 u8 ip_v4_csum;
939 u8 tcp_ip_v4_csum;
940 u8 udp_ip_v4_csum;
941 u8 tcp_ip_v6_csum;
942 u8 udp_ip_v6_csum;
943 u8 lso_v1;
944 u8 ip_sec_v1;
945 u8 lso_v2_ipv4;
946 u8 lso_v2_ipv6;
947 u8 tcp_connection_ip_v4;
948 u8 tcp_connection_ip_v6;
949 u32 flags;
950 u8 ip_sec_v2;
951 u8 ip_sec_v2_ip_v4;
952 struct {
953 u8 rsc_ip_v4;
954 u8 rsc_ip_v6;
955 };
956 struct {
957 u8 encapsulated_packet_task_offload;
958 u8 encapsulation_types;
959 };
960 };
961
962 struct ndis_tcp_ip_checksum_info {
963 union {
964 struct {
965 u32 is_ipv4:1;
966 u32 is_ipv6:1;
967 u32 tcp_checksum:1;
968 u32 udp_checksum:1;
969 u32 ip_header_checksum:1;
970 u32 reserved:11;
971 u32 tcp_header_offset:10;
972 } transmit;
973 struct {
974 u32 tcp_checksum_failed:1;
975 u32 udp_checksum_failed:1;
976 u32 ip_checksum_failed:1;
977 u32 tcp_checksum_succeeded:1;
978 u32 udp_checksum_succeeded:1;
979 u32 ip_checksum_succeeded:1;
980 u32 loopback:1;
981 u32 tcp_checksum_value_invalid:1;
982 u32 ip_checksum_value_invalid:1;
983 } receive;
984 u32 value;
985 };
986 };
987
988 struct ndis_tcp_lso_info {
989 union {
990 struct {
991 u32 unused:30;
992 u32 type:1;
993 u32 reserved2:1;
994 } transmit;
995 struct {
996 u32 mss:20;
997 u32 tcp_header_offset:10;
998 u32 type:1;
999 u32 reserved2:1;
1000 } lso_v1_transmit;
1001 struct {
1002 u32 tcp_payload:30;
1003 u32 type:1;
1004 u32 reserved2:1;
1005 } lso_v1_transmit_complete;
1006 struct {
1007 u32 mss:20;
1008 u32 tcp_header_offset:10;
1009 u32 type:1;
1010 u32 ip_version:1;
1011 } lso_v2_transmit;
1012 struct {
1013 u32 reserved:30;
1014 u32 type:1;
1015 u32 reserved2:1;
1016 } lso_v2_transmit_complete;
1017 u32 value;
1018 };
1019 };
1020
1021 #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1022 sizeof(struct ndis_pkt_8021q_info))
1023
1024 #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1025 sizeof(struct ndis_tcp_ip_checksum_info))
1026
1027 #define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1028 sizeof(struct ndis_tcp_lso_info))
1029
1030 #define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1031 sizeof(u32))
1032
1033 /* Total size of all PPI data */
1034 #define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1035 NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1036
1037 /* Format of Information buffer passed in a SetRequest for the OID */
1038 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1039 struct rndis_config_parameter_info {
1040 u32 parameter_name_offset;
1041 u32 parameter_name_length;
1042 u32 parameter_type;
1043 u32 parameter_value_offset;
1044 u32 parameter_value_length;
1045 };
1046
1047 /* Values for ParameterType in struct rndis_config_parameter_info */
1048 #define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
1049 #define RNDIS_CONFIG_PARAM_TYPE_STRING 2
1050
1051 /* CONDIS Miniport messages for connection oriented devices */
1052 /* that do not implement a call manager. */
1053
1054 /* CoNdisMiniportCreateVc message */
1055 struct rcondis_mp_create_vc {
1056 u32 req_id;
1057 u32 ndis_vc_handle;
1058 };
1059
1060 /* Response to CoNdisMiniportCreateVc */
1061 struct rcondis_mp_create_vc_complete {
1062 u32 req_id;
1063 u32 dev_vc_handle;
1064 u32 status;
1065 };
1066
1067 /* CoNdisMiniportDeleteVc message */
1068 struct rcondis_mp_delete_vc {
1069 u32 req_id;
1070 u32 dev_vc_handle;
1071 };
1072
1073 /* Response to CoNdisMiniportDeleteVc */
1074 struct rcondis_mp_delete_vc_complete {
1075 u32 req_id;
1076 u32 status;
1077 };
1078
1079 /* CoNdisMiniportQueryRequest message */
1080 struct rcondis_mp_query_request {
1081 u32 req_id;
1082 u32 request_type;
1083 u32 oid;
1084 u32 dev_vc_handle;
1085 u32 info_buflen;
1086 u32 info_buf_offset;
1087 };
1088
1089 /* CoNdisMiniportSetRequest message */
1090 struct rcondis_mp_set_request {
1091 u32 req_id;
1092 u32 request_type;
1093 u32 oid;
1094 u32 dev_vc_handle;
1095 u32 info_buflen;
1096 u32 info_buf_offset;
1097 };
1098
1099 /* CoNdisIndicateStatus message */
1100 struct rcondis_indicate_status {
1101 u32 ndis_vc_handle;
1102 u32 status;
1103 u32 status_buflen;
1104 u32 status_buf_offset;
1105 };
1106
1107 /* CONDIS Call/VC parameters */
1108 struct rcondis_specific_parameters {
1109 u32 parameter_type;
1110 u32 parameter_length;
1111 u32 parameter_lffset;
1112 };
1113
1114 struct rcondis_media_parameters {
1115 u32 flags;
1116 u32 reserved1;
1117 u32 reserved2;
1118 struct rcondis_specific_parameters media_specific;
1119 };
1120
1121 struct rndis_flowspec {
1122 u32 token_rate;
1123 u32 token_bucket_size;
1124 u32 peak_bandwidth;
1125 u32 latency;
1126 u32 delay_variation;
1127 u32 service_type;
1128 u32 max_sdu_size;
1129 u32 minimum_policed_size;
1130 };
1131
1132 struct rcondis_call_manager_parameters {
1133 struct rndis_flowspec transmit;
1134 struct rndis_flowspec receive;
1135 struct rcondis_specific_parameters call_mgr_specific;
1136 };
1137
1138 /* CoNdisMiniportActivateVc message */
1139 struct rcondis_mp_activate_vc_request {
1140 u32 req_id;
1141 u32 flags;
1142 u32 dev_vc_handle;
1143 u32 media_params_offset;
1144 u32 media_params_length;
1145 u32 call_mgr_params_offset;
1146 u32 call_mgr_params_length;
1147 };
1148
1149 /* Response to CoNdisMiniportActivateVc */
1150 struct rcondis_mp_activate_vc_complete {
1151 u32 req_id;
1152 u32 status;
1153 };
1154
1155 /* CoNdisMiniportDeactivateVc message */
1156 struct rcondis_mp_deactivate_vc_request {
1157 u32 req_id;
1158 u32 flags;
1159 u32 dev_vc_handle;
1160 };
1161
1162 /* Response to CoNdisMiniportDeactivateVc */
1163 struct rcondis_mp_deactivate_vc_complete {
1164 u32 req_id;
1165 u32 status;
1166 };
1167
1168
1169 /* union with all of the RNDIS messages */
1170 union rndis_message_container {
1171 struct rndis_packet pkt;
1172 struct rndis_initialize_request init_req;
1173 struct rndis_halt_request halt_req;
1174 struct rndis_query_request query_req;
1175 struct rndis_set_request set_req;
1176 struct rndis_reset_request reset_req;
1177 struct rndis_keepalive_request keep_alive_req;
1178 struct rndis_indicate_status indicate_status;
1179 struct rndis_initialize_complete init_complete;
1180 struct rndis_query_complete query_complete;
1181 struct rndis_set_complete set_complete;
1182 struct rndis_reset_complete reset_complete;
1183 struct rndis_keepalive_complete keep_alive_complete;
1184 struct rcondis_mp_create_vc co_miniport_create_vc;
1185 struct rcondis_mp_delete_vc co_miniport_delete_vc;
1186 struct rcondis_indicate_status co_indicate_status;
1187 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1188 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1189 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1190 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1191 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1192 struct rcondis_mp_deactivate_vc_complete
1193 co_miniport_deactivate_vc_complete;
1194 };
1195
1196 /* Remote NDIS message format */
1197 struct rndis_message {
1198 u32 ndis_msg_type;
1199
1200 /* Total length of this message, from the beginning */
1201 /* of the sruct rndis_message, in bytes. */
1202 u32 msg_len;
1203
1204 /* Actual message */
1205 union rndis_message_container msg;
1206 };
1207
1208
1209 /* Handy macros */
1210
1211 /* get the size of an RNDIS message. Pass in the message type, */
1212 /* struct rndis_set_request, struct rndis_packet for example */
1213 #define RNDIS_MESSAGE_SIZE(msg) \
1214 (sizeof(msg) + (sizeof(struct rndis_message) - \
1215 sizeof(union rndis_message_container)))
1216
1217 /* get pointer to info buffer with message pointer */
1218 #define MESSAGE_TO_INFO_BUFFER(msg) \
1219 (((unsigned char *)(msg)) + msg->info_buf_offset)
1220
1221 /* get pointer to status buffer with message pointer */
1222 #define MESSAGE_TO_STATUS_BUFFER(msg) \
1223 (((unsigned char *)(msg)) + msg->status_buf_offset)
1224
1225 /* get pointer to OOBD buffer with message pointer */
1226 #define MESSAGE_TO_OOBD_BUFFER(msg) \
1227 (((unsigned char *)(msg)) + msg->oob_data_offset)
1228
1229 /* get pointer to data buffer with message pointer */
1230 #define MESSAGE_TO_DATA_BUFFER(msg) \
1231 (((unsigned char *)(msg)) + msg->per_pkt_info_offset)
1232
1233 /* get pointer to contained message from NDIS_MESSAGE pointer */
1234 #define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg) \
1235 ((void *) &rndis_msg->msg)
1236
1237 /* get pointer to contained message from NDIS_MESSAGE pointer */
1238 #define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg) \
1239 ((void *) rndis_msg)
1240
1241
1242 #define __struct_bcount(x)
1243
1244
1245
1246 #define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
1247 sizeof(union rndis_message_container))
1248
1249 #define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1250
1251 #define NDIS_PACKET_TYPE_DIRECTED 0x00000001
1252 #define NDIS_PACKET_TYPE_MULTICAST 0x00000002
1253 #define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
1254 #define NDIS_PACKET_TYPE_BROADCAST 0x00000008
1255 #define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
1256 #define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
1257 #define NDIS_PACKET_TYPE_SMT 0x00000040
1258 #define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
1259 #define NDIS_PACKET_TYPE_GROUP 0x00000100
1260 #define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
1261 #define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
1262 #define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
1263
1264 #define INFO_IPV4 2
1265 #define INFO_IPV6 4
1266 #define INFO_TCP 2
1267 #define INFO_UDP 4
1268
1269 #define TRANSPORT_INFO_NOT_IP 0
1270 #define TRANSPORT_INFO_IPV4_TCP ((INFO_IPV4 << 16) | INFO_TCP)
1271 #define TRANSPORT_INFO_IPV4_UDP ((INFO_IPV4 << 16) | INFO_UDP)
1272 #define TRANSPORT_INFO_IPV6_TCP ((INFO_IPV6 << 16) | INFO_TCP)
1273 #define TRANSPORT_INFO_IPV6_UDP ((INFO_IPV6 << 16) | INFO_UDP)
1274
1275 static inline struct vmbus_channel *get_channel(struct hv_netvsc_packet *packet,
1276 struct netvsc_device *net_device)
1277
1278 {
1279 struct vmbus_channel *out_channel;
1280
1281 out_channel = net_device->chn_table[packet->q_idx];
1282 if (!out_channel) {
1283 out_channel = net_device->dev->channel;
1284 packet->q_idx = 0;
1285 }
1286 return out_channel;
1287 }
1288
1289
1290 #endif /* _HYPERV_NET_H */
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