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https://gitlab.com/qemu-project/qemu
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e263cd49c7
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Signed-off-by: Yan Vugenfirer <yan@daynix.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
148 lines
3.2 KiB
C
148 lines
3.2 KiB
C
/*
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* QEMU VMWARE VMXNET* paravirtual NICs - TX packets abstraction
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*
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* Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
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*
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* Developed by Daynix Computing LTD (http://www.daynix.com)
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*
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* Authors:
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* Dmitry Fleytman <dmitry@daynix.com>
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* Tamir Shomer <tamirs@daynix.com>
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* Yan Vugenfirer <yan@daynix.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef VMXNET_TX_PKT_H
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#define VMXNET_TX_PKT_H
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#include "stdint.h"
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#include "stdbool.h"
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#include "net/eth.h"
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#include "exec/hwaddr.h"
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/* define to enable packet dump functions */
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/*#define VMXNET_TX_PKT_DEBUG*/
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struct VmxnetTxPkt;
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/**
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* Init function for tx packet functionality
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*
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* @pkt: packet pointer
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* @max_frags: max tx ip fragments
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* @has_virt_hdr: device uses virtio header.
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*/
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void vmxnet_tx_pkt_init(struct VmxnetTxPkt **pkt, uint32_t max_frags,
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bool has_virt_hdr);
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/**
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* Clean all tx packet resources.
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*
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* @pkt: packet.
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*/
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void vmxnet_tx_pkt_uninit(struct VmxnetTxPkt *pkt);
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/**
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* get virtio header
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*
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* @pkt: packet
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* @ret: virtio header
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*/
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struct virtio_net_hdr *vmxnet_tx_pkt_get_vhdr(struct VmxnetTxPkt *pkt);
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/**
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* build virtio header (will be stored in module context)
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*
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* @pkt: packet
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* @tso_enable: TSO enabled
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* @csum_enable: CSO enabled
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* @gso_size: MSS size for TSO
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*
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*/
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void vmxnet_tx_pkt_build_vheader(struct VmxnetTxPkt *pkt, bool tso_enable,
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bool csum_enable, uint32_t gso_size);
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/**
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* updates vlan tag, and adds vlan header in case it is missing
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*
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* @pkt: packet
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* @vlan: VLAN tag
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*
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*/
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void vmxnet_tx_pkt_setup_vlan_header(struct VmxnetTxPkt *pkt, uint16_t vlan);
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/**
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* populate data fragment into pkt context.
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*
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* @pkt: packet
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* @pa: physical address of fragment
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* @len: length of fragment
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*
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*/
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bool vmxnet_tx_pkt_add_raw_fragment(struct VmxnetTxPkt *pkt, hwaddr pa,
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size_t len);
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/**
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* fix ip header fields and calculate checksums needed.
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*
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* @pkt: packet
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*
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*/
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void vmxnet_tx_pkt_update_ip_checksums(struct VmxnetTxPkt *pkt);
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/**
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* get length of all populated data.
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*
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* @pkt: packet
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* @ret: total data length
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*
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*/
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size_t vmxnet_tx_pkt_get_total_len(struct VmxnetTxPkt *pkt);
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/**
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* get packet type
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*
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* @pkt: packet
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* @ret: packet type
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*
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*/
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eth_pkt_types_e vmxnet_tx_pkt_get_packet_type(struct VmxnetTxPkt *pkt);
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/**
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* prints packet data if debug is enabled
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*
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* @pkt: packet
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*
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*/
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void vmxnet_tx_pkt_dump(struct VmxnetTxPkt *pkt);
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/**
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* reset tx packet private context (needed to be called between packets)
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*
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* @pkt: packet
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*
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*/
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void vmxnet_tx_pkt_reset(struct VmxnetTxPkt *pkt);
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/**
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* Send packet to qemu. handles sw offloads if vhdr is not supported.
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*
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* @pkt: packet
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* @nc: NetClientState
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* @ret: operation result
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*
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*/
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bool vmxnet_tx_pkt_send(struct VmxnetTxPkt *pkt, NetClientState *nc);
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/**
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* parse raw packet data and analyze offload requirements.
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*
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* @pkt: packet
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*
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*/
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bool vmxnet_tx_pkt_parse(struct VmxnetTxPkt *pkt);
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#endif
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