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ab057781 HJ |
1 | /* |
2 | * | |
3 | * Copyright (c) 2009, 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, write to the Free Software Foundation, Inc., 59 Temple | |
16 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
17 | * | |
18 | * Authors: | |
19 | * Haiyang Zhang <haiyangz@microsoft.com> | |
20 | * Hank Janssen <hjanssen@microsoft.com> | |
21 | * | |
22 | */ | |
23 | ||
24 | ||
25 | #ifndef _NETVSC_API_H_ | |
26 | #define _NETVSC_API_H_ | |
27 | ||
447fc67e | 28 | #include "vmbus_api.h" |
454f18a9 | 29 | |
454f18a9 | 30 | /* Fwd declaration */ |
4193d4f4 | 31 | struct hv_netvsc_packet; |
ab057781 | 32 | |
454f18a9 | 33 | /* Represent the xfer page packet which contains 1 or more netvsc packet */ |
7e23a6e9 | 34 | struct xferpage_packet { |
72a2f5bd | 35 | struct list_head list_ent; |
ab057781 | 36 | |
454f18a9 | 37 | /* # of netvsc packets this xfer packet contains */ |
72a2f5bd | 38 | u32 count; |
7e23a6e9 | 39 | }; |
ab057781 | 40 | |
454f18a9 | 41 | /* The number of pages which are enough to cover jumbo frame buffer. */ |
8eef6739 | 42 | #define NETVSC_PACKET_MAXPAGE 4 |
ab057781 | 43 | |
454f18a9 BP |
44 | /* |
45 | * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame | |
46 | * within the RNDIS | |
47 | */ | |
4193d4f4 | 48 | struct hv_netvsc_packet { |
454f18a9 | 49 | /* Bookkeeping stuff */ |
72a2f5bd | 50 | struct list_head list_ent; |
ab057781 | 51 | |
72a2f5bd HZ |
52 | struct hv_device *device; |
53 | bool is_data_pkt; | |
ab057781 | 54 | |
454f18a9 BP |
55 | /* |
56 | * Valid only for receives when we break a xfer page packet | |
57 | * into multiple netvsc packets | |
58 | */ | |
72a2f5bd | 59 | struct xferpage_packet *xfer_page_pkt; |
ab057781 HJ |
60 | |
61 | union { | |
62 | struct{ | |
72a2f5bd HZ |
63 | u64 recv_completion_tid; |
64 | void *recv_completion_ctx; | |
65 | void (*recv_completion)(void *context); | |
66 | } recv; | |
ab057781 | 67 | struct{ |
72a2f5bd HZ |
68 | u64 send_completion_tid; |
69 | void *send_completion_ctx; | |
70 | void (*send_completion)(void *context); | |
71 | } send; | |
72 | } completion; | |
ab057781 | 73 | |
72a2f5bd HZ |
74 | /* This points to the memory after page_buf */ |
75 | void *extension; | |
ab057781 | 76 | |
72a2f5bd | 77 | u32 total_data_buflen; |
454f18a9 | 78 | /* Points to the send/receive buffer where the ethernet frame is */ |
72a2f5bd HZ |
79 | u32 page_buf_cnt; |
80 | struct hv_page_buffer page_buf[NETVSC_PACKET_MAXPAGE]; | |
4193d4f4 | 81 | }; |
ab057781 | 82 | |
454f18a9 | 83 | /* Represents the net vsc driver */ |
7e23a6e9 | 84 | struct netvsc_driver { |
8eef6739 GKH |
85 | /* Must be the first field */ |
86 | /* Which is a bug FIXME! */ | |
72a2f5bd | 87 | struct hv_driver base; |
ab057781 | 88 | |
72a2f5bd HZ |
89 | u32 ring_buf_size; |
90 | u32 req_ext_size; | |
ab057781 | 91 | |
454f18a9 BP |
92 | /* |
93 | * This is set by the caller to allow us to callback when we | |
94 | * receive a packet from the "wire" | |
95 | */ | |
72a2f5bd | 96 | int (*recv_cb)(struct hv_device *dev, |
211ccd6e | 97 | struct hv_netvsc_packet *packet); |
72a2f5bd | 98 | void (*link_status_change)(struct hv_device *dev, u32 Status); |
ab057781 | 99 | |
454f18a9 | 100 | /* Specific to this driver */ |
72a2f5bd | 101 | int (*send)(struct hv_device *dev, struct hv_netvsc_packet *packet); |
ab057781 | 102 | |
72a2f5bd | 103 | void *ctx; |
7e23a6e9 | 104 | }; |
ab057781 | 105 | |
7e23a6e9 | 106 | struct netvsc_device_info { |
72a2f5bd HZ |
107 | unsigned char mac_adr[6]; |
108 | bool link_state; /* 0 - link up, 1 - link down */ | |
7e23a6e9 | 109 | }; |
ab057781 | 110 | |
454f18a9 | 111 | /* Interface */ |
5a71ae30 | 112 | int netvsc_initialize(struct hv_driver *drv); |
9c26aa0d HZ |
113 | int rndis_filter_open(struct hv_device *dev); |
114 | int rndis_filter_close(struct hv_device *dev); | |
ab057781 | 115 | |
454f18a9 | 116 | #endif /* _NETVSC_API_H_ */ |