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/*
* QEMU VMWARE VMXNET* paravirtual NICs - RX 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_RX_PKT_H
#define VMXNET_RX_PKT_H
#include "stdint.h"
#include "stdbool.h"
#include "net/eth.h"
/* defines to enable packet dump functions */
/*#define VMXNET_RX_PKT_DEBUG*/
struct VmxnetRxPkt;
/**
* Clean all rx packet resources
*
* @pkt: packet
*
*/
void vmxnet_rx_pkt_uninit(struct VmxnetRxPkt *pkt);
/**
* Init function for rx packet functionality
*
* @pkt: packet pointer
* @has_virt_hdr: device uses virtio header
*
*/
void vmxnet_rx_pkt_init(struct VmxnetRxPkt **pkt, bool has_virt_hdr);
/**
* returns total length of data attached to rx context
*
* @pkt: packet
*
* Return: nothing
*
*/
size_t vmxnet_rx_pkt_get_total_len(struct VmxnetRxPkt *pkt);
/**
* fetches packet analysis results
*
* @pkt: packet
* @isip4: whether the packet given is IPv4
* @isip6: whether the packet given is IPv6
* @isudp: whether the packet given is UDP
* @istcp: whether the packet given is TCP
*
*/
void vmxnet_rx_pkt_get_protocols(struct VmxnetRxPkt *pkt,
bool *isip4, bool *isip6,
bool *isudp, bool *istcp);
/**
* returns virtio header stored in rx context
*
* @pkt: packet
* @ret: virtio header
*
*/
struct virtio_net_hdr *vmxnet_rx_pkt_get_vhdr(struct VmxnetRxPkt *pkt);
/**
* returns packet type
*
* @pkt: packet
* @ret: packet type
*
*/
eth_pkt_types_e vmxnet_rx_pkt_get_packet_type(struct VmxnetRxPkt *pkt);
/**
* returns vlan tag
*
* @pkt: packet
* @ret: VLAN tag
*
*/
uint16_t vmxnet_rx_pkt_get_vlan_tag(struct VmxnetRxPkt *pkt);
/**
* tells whether vlan was stripped from the packet
*
* @pkt: packet
* @ret: VLAN stripped sign
*
*/
bool vmxnet_rx_pkt_is_vlan_stripped(struct VmxnetRxPkt *pkt);
/**
* notifies caller if the packet has virtio header
*
* @pkt: packet
* @ret: true if packet has virtio header, false otherwize
*
*/
bool vmxnet_rx_pkt_has_virt_hdr(struct VmxnetRxPkt *pkt);
/**
* returns number of frags attached to the packet
*
* @pkt: packet
* @ret: number of frags
*
*/
uint16_t vmxnet_rx_pkt_get_num_frags(struct VmxnetRxPkt *pkt);
/**
* attach data to rx packet
*
* @pkt: packet
* @data: pointer to the data buffer
* @len: data length
* @strip_vlan: should the module strip vlan from data
*
*/
void vmxnet_rx_pkt_attach_data(struct VmxnetRxPkt *pkt, const void *data,
size_t len, bool strip_vlan);
/**
* returns io vector that holds the attached data
*
* @pkt: packet
* @ret: pointer to IOVec
*
*/
struct iovec *vmxnet_rx_pkt_get_iovec(struct VmxnetRxPkt *pkt);
/**
* prints rx packet data if debug is enabled
*
* @pkt: packet
*
*/
void vmxnet_rx_pkt_dump(struct VmxnetRxPkt *pkt);
/**
* copy passed vhdr data to packet context
*
* @pkt: packet
* @vhdr: VHDR buffer
*
*/
void vmxnet_rx_pkt_set_vhdr(struct VmxnetRxPkt *pkt,
struct virtio_net_hdr *vhdr);
/**
* save packet type in packet context
*
* @pkt: packet
* @packet_type: the packet type
*
*/
void vmxnet_rx_pkt_set_packet_type(struct VmxnetRxPkt *pkt,
eth_pkt_types_e packet_type);
#endif
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