mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 21:40:49 +00:00
eb700029c7
This patch extends the TX/RX packet abstractions with features that will be used by the e1000e device implementation. Changes are: 1. Support iovec lists for RX buffers 2. Deeper RX packets parsing 3. Loopback option for TX packets 4. Extended VLAN headers handling 5. RSS processing for RX packets Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com> Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
191 lines
4.0 KiB
C
191 lines
4.0 KiB
C
/*
|
|
* QEMU 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 NET_TX_PKT_H
|
|
#define NET_TX_PKT_H
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "net/eth.h"
|
|
#include "exec/hwaddr.h"
|
|
|
|
/* define to enable packet dump functions */
|
|
/*#define NET_TX_PKT_DEBUG*/
|
|
|
|
struct NetTxPkt;
|
|
|
|
/**
|
|
* Init function for tx packet functionality
|
|
*
|
|
* @pkt: packet pointer
|
|
* @max_frags: max tx ip fragments
|
|
* @has_virt_hdr: device uses virtio header.
|
|
*/
|
|
void net_tx_pkt_init(struct NetTxPkt **pkt, uint32_t max_frags,
|
|
bool has_virt_hdr);
|
|
|
|
/**
|
|
* Clean all tx packet resources.
|
|
*
|
|
* @pkt: packet.
|
|
*/
|
|
void net_tx_pkt_uninit(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* get virtio header
|
|
*
|
|
* @pkt: packet
|
|
* @ret: virtio header
|
|
*/
|
|
struct virtio_net_hdr *net_tx_pkt_get_vhdr(struct NetTxPkt *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 net_tx_pkt_build_vheader(struct NetTxPkt *pkt, bool tso_enable,
|
|
bool csum_enable, uint32_t gso_size);
|
|
|
|
/**
|
|
* updates vlan tag, and adds vlan header with custom ethernet type
|
|
* in case it is missing.
|
|
*
|
|
* @pkt: packet
|
|
* @vlan: VLAN tag
|
|
* @vlan_ethtype: VLAN header Ethernet type
|
|
*
|
|
*/
|
|
void net_tx_pkt_setup_vlan_header_ex(struct NetTxPkt *pkt,
|
|
uint16_t vlan, uint16_t vlan_ethtype);
|
|
|
|
/**
|
|
* updates vlan tag, and adds vlan header in case it is missing
|
|
*
|
|
* @pkt: packet
|
|
* @vlan: VLAN tag
|
|
*
|
|
*/
|
|
static inline void
|
|
net_tx_pkt_setup_vlan_header(struct NetTxPkt *pkt, uint16_t vlan)
|
|
{
|
|
net_tx_pkt_setup_vlan_header_ex(pkt, vlan, ETH_P_VLAN);
|
|
}
|
|
|
|
/**
|
|
* populate data fragment into pkt context.
|
|
*
|
|
* @pkt: packet
|
|
* @pa: physical address of fragment
|
|
* @len: length of fragment
|
|
*
|
|
*/
|
|
bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa,
|
|
size_t len);
|
|
|
|
/**
|
|
* Fix ip header fields and calculate IP header and pseudo header checksums.
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
void net_tx_pkt_update_ip_checksums(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* Calculate the IP header checksum.
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
void net_tx_pkt_update_ip_hdr_checksum(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* get length of all populated data.
|
|
*
|
|
* @pkt: packet
|
|
* @ret: total data length
|
|
*
|
|
*/
|
|
size_t net_tx_pkt_get_total_len(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* get packet type
|
|
*
|
|
* @pkt: packet
|
|
* @ret: packet type
|
|
*
|
|
*/
|
|
eth_pkt_types_e net_tx_pkt_get_packet_type(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* prints packet data if debug is enabled
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
void net_tx_pkt_dump(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* reset tx packet private context (needed to be called between packets)
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
void net_tx_pkt_reset(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* Send packet to qemu. handles sw offloads if vhdr is not supported.
|
|
*
|
|
* @pkt: packet
|
|
* @nc: NetClientState
|
|
* @ret: operation result
|
|
*
|
|
*/
|
|
bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc);
|
|
|
|
/**
|
|
* Redirect packet directly to receive path (emulate loopback phy).
|
|
* Handles sw offloads if vhdr is not supported.
|
|
*
|
|
* @pkt: packet
|
|
* @nc: NetClientState
|
|
* @ret: operation result
|
|
*
|
|
*/
|
|
bool net_tx_pkt_send_loopback(struct NetTxPkt *pkt, NetClientState *nc);
|
|
|
|
/**
|
|
* parse raw packet data and analyze offload requirements.
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
bool net_tx_pkt_parse(struct NetTxPkt *pkt);
|
|
|
|
/**
|
|
* indicates if there are data fragments held by this packet object.
|
|
*
|
|
* @pkt: packet
|
|
*
|
|
*/
|
|
bool net_tx_pkt_has_fragments(struct NetTxPkt *pkt);
|
|
|
|
#endif
|