projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| e263cd49 DF |
1 | /* |
| 2 | * QEMU VMWARE VMXNET* paravirtual NICs - TX packets abstraction | |
| 3 | * | |
| 4 | * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com) | |
| 5 | * | |
| 6 | * Developed by Daynix Computing LTD (http://www.daynix.com) | |
| 7 | * | |
| 8 | * Authors: | |
| 9 | * Dmitry Fleytman <dmitry@daynix.com> | |
| 10 | * Tamir Shomer <tamirs@daynix.com> | |
| 11 | * Yan Vugenfirer <yan@daynix.com> | |
| 12 | * | |
| 13 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
| 14 | * See the COPYING file in the top-level directory. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef VMXNET_TX_PKT_H | |
| 19 | #define VMXNET_TX_PKT_H | |
| 20 | ||
| 21 | #include "stdint.h" | |
| 22 | #include "stdbool.h" | |
| 23 | #include "net/eth.h" | |
| 24 | #include "exec/hwaddr.h" | |
| 25 | ||
| 26 | /* define to enable packet dump functions */ | |
| 27 | /*#define VMXNET_TX_PKT_DEBUG*/ | |
| 28 | ||
| 29 | struct VmxnetTxPkt; | |
| 30 | ||
| 31 | /** | |
| 32 | * Init function for tx packet functionality | |
| 33 | * | |
| 34 | * @pkt: packet pointer | |
| 35 | * @max_frags: max tx ip fragments | |
| 36 | * @has_virt_hdr: device uses virtio header. | |
| 37 | */ | |
| 38 | void vmxnet_tx_pkt_init(struct VmxnetTxPkt **pkt, uint32_t max_frags, | |
| 39 | bool has_virt_hdr); | |
| 40 | ||
| 41 | /** | |
| 42 | * Clean all tx packet resources. | |
| 43 | * | |
| 44 | * @pkt: packet. | |
| 45 | */ | |
| 46 | void vmxnet_tx_pkt_uninit(struct VmxnetTxPkt *pkt); | |
| 47 | ||
| 48 | /** | |
| 49 | * get virtio header | |
| 50 | * | |
| 51 | * @pkt: packet | |
| 52 | * @ret: virtio header | |
| 53 | */ | |
| 54 | struct virtio_net_hdr *vmxnet_tx_pkt_get_vhdr(struct VmxnetTxPkt *pkt); | |
| 55 | ||
| 56 | /** | |
| 57 | * build virtio header (will be stored in module context) | |
| 58 | * | |
| 59 | * @pkt: packet | |
| 60 | * @tso_enable: TSO enabled | |
| 61 | * @csum_enable: CSO enabled | |
| 62 | * @gso_size: MSS size for TSO | |
| 63 | * | |
| 64 | */ | |
| 65 | void vmxnet_tx_pkt_build_vheader(struct VmxnetTxPkt *pkt, bool tso_enable, | |
| 66 | bool csum_enable, uint32_t gso_size); | |
| 67 | ||
| 68 | /** | |
| 69 | * updates vlan tag, and adds vlan header in case it is missing | |
| 70 | * | |
| 71 | * @pkt: packet | |
| 72 | * @vlan: VLAN tag | |
| 73 | * | |
| 74 | */ | |
| 75 | void vmxnet_tx_pkt_setup_vlan_header(struct VmxnetTxPkt *pkt, uint16_t vlan); | |
| 76 | ||
| 77 | /** | |
| 78 | * populate data fragment into pkt context. | |
| 79 | * | |
| 80 | * @pkt: packet | |
| 81 | * @pa: physical address of fragment | |
| 82 | * @len: length of fragment | |
| 83 | * | |
| 84 | */ | |
| 85 | bool vmxnet_tx_pkt_add_raw_fragment(struct VmxnetTxPkt *pkt, hwaddr pa, | |
| 86 | size_t len); | |
| 87 | ||
| 88 | /** | |
| 89 | * fix ip header fields and calculate checksums needed. | |
| 90 | * | |
| 91 | * @pkt: packet | |
| 92 | * | |
| 93 | */ | |
| 94 | void vmxnet_tx_pkt_update_ip_checksums(struct VmxnetTxPkt *pkt); | |
| 95 | ||
| 96 | /** | |
| 97 | * get length of all populated data. | |
| 98 | * | |
| 99 | * @pkt: packet | |
| 100 | * @ret: total data length | |
| 101 | * | |
| 102 | */ | |
| 103 | size_t vmxnet_tx_pkt_get_total_len(struct VmxnetTxPkt *pkt); | |
| 104 | ||
| 105 | /** | |
| 106 | * get packet type | |
| 107 | * | |
| 108 | * @pkt: packet | |
| 109 | * @ret: packet type | |
| 110 | * | |
| 111 | */ | |
| 112 | eth_pkt_types_e vmxnet_tx_pkt_get_packet_type(struct VmxnetTxPkt *pkt); | |
| 113 | ||
| 114 | /** | |
| 115 | * prints packet data if debug is enabled | |
| 116 | * | |
| 117 | * @pkt: packet | |
| 118 | * | |
| 119 | */ | |
| 120 | void vmxnet_tx_pkt_dump(struct VmxnetTxPkt *pkt); | |
| 121 | ||
| 122 | /** | |
| 123 | * reset tx packet private context (needed to be called between packets) | |
| 124 | * | |
| 125 | * @pkt: packet | |
| 126 | * | |
| 127 | */ | |
| 128 | void vmxnet_tx_pkt_reset(struct VmxnetTxPkt *pkt); | |
| 129 | ||
| 130 | /** | |
| 131 | * Send packet to qemu. handles sw offloads if vhdr is not supported. | |
| 132 | * | |
| 133 | * @pkt: packet | |
| 134 | * @nc: NetClientState | |
| 135 | * @ret: operation result | |
| 136 | * | |
| 137 | */ | |
| 138 | bool vmxnet_tx_pkt_send(struct VmxnetTxPkt *pkt, NetClientState *nc); | |
| 139 | ||
| 140 | /** | |
| 141 | * parse raw packet data and analyze offload requirements. | |
| 142 | * | |
| 143 | * @pkt: packet | |
| 144 | * | |
| 145 | */ | |
| 146 | bool vmxnet_tx_pkt_parse(struct VmxnetTxPkt *pkt); | |
| 147 | ||
| 148 | #endif |