blob: 57121a6fe5e9f39da983c305dc8133f1f715a009 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* QEMU VMWARE VMXNET* paravirtual NICs - TX packets abstraction
*
* Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
*
* Developed by Daynix Computing LTD (http://www.daynix.com)
*
* Authors:
* Dmitry Fleytman <dmitry@daynix.com>
* Tamir Shomer <tamirs@daynix.com>
* Yan Vugenfirer <yan@daynix.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef VMXNET_TX_PKT_H
#define VMXNET_TX_PKT_H
#include "stdint.h"
#include "stdbool.h"
#include "net/eth.h"
#include "exec/hwaddr.h"
/* define to enable packet dump functions */
/*#define VMXNET_TX_PKT_DEBUG*/
struct VmxnetTxPkt;
/**
* Init function for tx packet functionality
*
* @pkt: packet pointer
* @max_frags: max tx ip fragments
* @has_virt_hdr: device uses virtio header.
*/
void vmxnet_tx_pkt_init(struct VmxnetTxPkt **pkt, uint32_t max_frags,
bool has_virt_hdr);
/**
* Clean all tx packet resources.
*
* @pkt: packet.
*/
void vmxnet_tx_pkt_uninit(struct VmxnetTxPkt *pkt);
/**
* get virtio header
*
* @pkt: packet
* @ret: virtio header
*/
struct virtio_net_hdr *vmxnet_tx_pkt_get_vhdr(struct VmxnetTxPkt *pkt);
/**
* build virtio header (will be stored in module context)
*
* @pkt: packet
* @tso_enable: TSO enabled
* @csum_enable: CSO enabled
* @gso_size: MSS size for TSO
*
*/
void vmxnet_tx_pkt_build_vheader(struct VmxnetTxPkt *pkt, bool tso_enable,
bool csum_enable, uint32_t gso_size);
/**
* updates vlan tag, and adds vlan header in case it is missing
*
* @pkt: packet
* @vlan: VLAN tag
*
*/
void vmxnet_tx_pkt_setup_vlan_header(struct VmxnetTxPkt *pkt, uint16_t vlan);
/**
* populate data fragment into pkt context.
*
* @pkt: packet
* @pa: physical address of fragment
* @len: length of fragment
*
*/
bool vmxnet_tx_pkt_add_raw_fragment(struct VmxnetTxPkt *pkt, hwaddr pa,
size_t len);
/**
* fix ip header fields and calculate checksums needed.
*
* @pkt: packet
*
*/
void vmxnet_tx_pkt_update_ip_checksums(struct VmxnetTxPkt *pkt);
/**
* get length of all populated data.
*
* @pkt: packet
* @ret: total data length
*
*/
size_t vmxnet_tx_pkt_get_total_len(struct VmxnetTxPkt *pkt);
/**
* get packet type
*
* @pkt: packet
* @ret: packet type
*
*/
eth_pkt_types_e vmxnet_tx_pkt_get_packet_type(struct VmxnetTxPkt *pkt);
/**
* prints packet data if debug is enabled
*
* @pkt: packet
*
*/
void vmxnet_tx_pkt_dump(struct VmxnetTxPkt *pkt);
/**
* reset tx packet private context (needed to be called between packets)
*
* @pkt: packet
*
*/
void vmxnet_tx_pkt_reset(struct VmxnetTxPkt *pkt);
/**
* Send packet to qemu. handles sw offloads if vhdr is not supported.
*
* @pkt: packet
* @nc: NetClientState
* @ret: operation result
*
*/
bool vmxnet_tx_pkt_send(struct VmxnetTxPkt *pkt, NetClientState *nc);
/**
* parse raw packet data and analyze offload requirements.
*
* @pkt: packet
*
*/
bool vmxnet_tx_pkt_parse(struct VmxnetTxPkt *pkt);
#endif
|
