149 lines
3.2 KiB
C
149 lines
3.2 KiB
C
|
/*
|
||
|
|
* 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
|