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net_pkt: Extend packet abstraction as required by e1000e functionality

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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>
This commit is contained in:
Dmitry Fleytman 2016-06-01 11:23:41 +03:00 • committed by Jason Wang
parent 66409b7c8b
commit eb700029c7
9 changed files with 1346 additions and 215 deletions
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60
hw/net/net_tx_pkt.h
View file

@ -18,6 +18,7 @@
#ifndef NET_TX_PKT_H
#define NET_TX_PKT_H
#include "qemu/osdep.h"
#include "net/eth.h"
#include "exec/hwaddr.h"
@ -64,13 +65,29 @@ 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 in case it is missing
*
* @pkt: packet
* @vlan: VLAN tag
*
*/
void net_tx_pkt_setup_vlan_header(struct NetTxPkt *pkt, uint16_t vlan);
* 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.
@ -84,13 +101,21 @@ bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa,
size_t len);
/**
* fix ip header fields and calculate checksums needed.
* 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.
*
@ -135,6 +160,17 @@ void net_tx_pkt_reset(struct NetTxPkt *pkt);
*/
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.
*
@ -143,4 +179,12 @@ bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc);
*/
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