author | Mike Kinghan <mikek@symbian.org> |
Mon, 01 Nov 2010 10:36:09 +0000 | |
branch | GCC_SURGE |
changeset 127 | c0501b51f2b9 |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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/* |
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* Virtio Network Device |
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* |
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* Copyright IBM, Corp. 2007 |
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* |
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* Authors: |
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* Anthony Liguori <aliguori@us.ibm.com> |
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* |
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* This work is licensed under the terms of the GNU GPL, version 2. See |
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* the COPYING file in the top-level directory. |
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* |
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*/ |
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#ifndef _QEMU_VIRTIO_NET_H |
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#define _QEMU_VIRTIO_NET_H |
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#include "virtio.h" |
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#include "net.h" |
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/* from Linux's virtio_net.h */ |
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/* The ID for virtio_net */ |
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#define VIRTIO_ID_NET 1 |
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/* The feature bitmap for virtio net */ |
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#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ |
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#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ |
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#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ |
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#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ |
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#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ |
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#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ |
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#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ |
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#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ |
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#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ |
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#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ |
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#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ |
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#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ |
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#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ |
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#define TX_TIMER_INTERVAL 150000 /* 150 us */ |
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/* Maximum packet size we can receive from tap device: header + 64k */ |
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#define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10)) |
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/* The config defining mac address (6 bytes) */ |
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struct virtio_net_config |
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{ |
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uint8_t mac[6]; |
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} __attribute__((packed)); |
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/* This is the first element of the scatter-gather list. If you don't |
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* specify GSO or CSUM features, you can simply ignore the header. */ |
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struct virtio_net_hdr |
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{ |
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#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset |
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uint8_t flags; |
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#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame |
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#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) |
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#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) |
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#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP |
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#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set |
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uint8_t gso_type; |
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uint16_t hdr_len; |
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uint16_t gso_size; |
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uint16_t csum_start; |
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uint16_t csum_offset; |
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}; |
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/* This is the version of the header to use when the MRG_RXBUF |
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* feature has been negotiated. */ |
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struct virtio_net_hdr_mrg_rxbuf |
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{ |
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struct virtio_net_hdr hdr; |
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uint16_t num_buffers; /* Number of merged rx buffers */ |
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}; |
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void virtio_net_init(VirtIOBindFn bind, void *bind_arg, NICInfo *nd); |
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#endif |