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Diffstat (limited to 'hw/net/net_tx_pkt.h')
-rw-r--r-- | hw/net/net_tx_pkt.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/hw/net/net_tx_pkt.h b/hw/net/net_tx_pkt.h new file mode 100644 index 0000000000..be2e117b7d --- /dev/null +++ b/hw/net/net_tx_pkt.h @@ -0,0 +1,146 @@ +/* + * 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 "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 in case it is missing + * + * @pkt: packet + * @vlan: VLAN tag + * + */ +void net_tx_pkt_setup_vlan_header(struct NetTxPkt *pkt, uint16_t 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 checksums needed. + * + * @pkt: packet + * + */ +void net_tx_pkt_update_ip_checksums(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); + +/** + * parse raw packet data and analyze offload requirements. + * + * @pkt: packet + * + */ +bool net_tx_pkt_parse(struct NetTxPkt *pkt); + +#endif |