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@ -57,6 +57,9 @@ |
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* Steering */ |
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#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ |
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#define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */ |
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#define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */ |
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#define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */ |
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#define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device |
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* with the same MAC. |
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*/ |
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@ -69,6 +72,17 @@ |
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#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ |
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#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */ |
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/* supported/enabled hash types */ |
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#define VIRTIO_NET_RSS_HASH_TYPE_IPv4 (1 << 0) |
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#define VIRTIO_NET_RSS_HASH_TYPE_TCPv4 (1 << 1) |
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#define VIRTIO_NET_RSS_HASH_TYPE_UDPv4 (1 << 2) |
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#define VIRTIO_NET_RSS_HASH_TYPE_IPv6 (1 << 3) |
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#define VIRTIO_NET_RSS_HASH_TYPE_TCPv6 (1 << 4) |
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#define VIRTIO_NET_RSS_HASH_TYPE_UDPv6 (1 << 5) |
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#define VIRTIO_NET_RSS_HASH_TYPE_IP_EX (1 << 6) |
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#define VIRTIO_NET_RSS_HASH_TYPE_TCP_EX (1 << 7) |
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#define VIRTIO_NET_RSS_HASH_TYPE_UDP_EX (1 << 8) |
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struct virtio_net_config { |
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/* The config defining mac address (if VIRTIO_NET_F_MAC) */ |
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uint8_t mac[ETH_ALEN]; |
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@ -92,6 +106,12 @@ struct virtio_net_config { |
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* Any other value stands for unknown. |
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*/ |
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uint8_t duplex; |
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/* maximum size of RSS key */ |
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uint8_t rss_max_key_size; |
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/* maximum number of indirection table entries */ |
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uint16_t rss_max_indirection_table_length; |
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/* bitmask of supported VIRTIO_NET_RSS_HASH_ types */ |
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uint32_t supported_hash_types; |
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} QEMU_PACKED; |
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/*
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@ -104,6 +124,7 @@ struct virtio_net_config { |
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struct virtio_net_hdr_v1 { |
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#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */ |
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#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ |
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#define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc info in csum_ fields */ |
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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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@ -113,11 +134,46 @@ struct virtio_net_hdr_v1 { |
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uint8_t gso_type; |
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__virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ |
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__virtio16 gso_size; /* Bytes to append to hdr_len per frame */ |
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__virtio16 csum_start; /* Position to start checksumming from */ |
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__virtio16 csum_offset; /* Offset after that to place checksum */ |
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union { |
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struct { |
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__virtio16 csum_start; |
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__virtio16 csum_offset; |
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}; |
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/* Checksum calculation */ |
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struct { |
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/* Position to start checksumming from */ |
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__virtio16 start; |
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/* Offset after that to place checksum */ |
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__virtio16 offset; |
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} csum; |
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/* Receive Segment Coalescing */ |
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struct { |
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/* Number of coalesced segments */ |
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uint16_t segments; |
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/* Number of duplicated acks */ |
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uint16_t dup_acks; |
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} rsc; |
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}; |
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__virtio16 num_buffers; /* Number of merged rx buffers */ |
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}; |
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struct virtio_net_hdr_v1_hash { |
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struct virtio_net_hdr_v1 hdr; |
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uint32_t hash_value; |
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#define VIRTIO_NET_HASH_REPORT_NONE 0 |
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#define VIRTIO_NET_HASH_REPORT_IPv4 1 |
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#define VIRTIO_NET_HASH_REPORT_TCPv4 2 |
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#define VIRTIO_NET_HASH_REPORT_UDPv4 3 |
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#define VIRTIO_NET_HASH_REPORT_IPv6 4 |
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#define VIRTIO_NET_HASH_REPORT_TCPv6 5 |
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#define VIRTIO_NET_HASH_REPORT_UDPv6 6 |
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#define VIRTIO_NET_HASH_REPORT_IPv6_EX 7 |
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#define VIRTIO_NET_HASH_REPORT_TCPv6_EX 8 |
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#define VIRTIO_NET_HASH_REPORT_UDPv6_EX 9 |
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uint16_t hash_report; |
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uint16_t padding; |
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}; |
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#ifndef VIRTIO_NET_NO_LEGACY |
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/* This header comes first in the scatter-gather list.
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* For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated, it must |
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@ -228,7 +284,9 @@ struct virtio_net_ctrl_mac { |
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/*
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* Control Receive Flow Steering |
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* |
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*/ |
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#define VIRTIO_NET_CTRL_MQ 4 |
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/*
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* The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET |
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* enables Receive Flow Steering, specifying the number of the transmit and |
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* receive queues that will be used. After the command is consumed and acked by |
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@ -241,11 +299,47 @@ struct virtio_net_ctrl_mq { |
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__virtio16 virtqueue_pairs; |
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}; |
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#define VIRTIO_NET_CTRL_MQ 4 |
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#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 |
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#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 |
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#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 |
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/*
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* The command VIRTIO_NET_CTRL_MQ_RSS_CONFIG has the same effect as |
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* VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET does and additionally configures |
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* the receive steering to use a hash calculated for incoming packet |
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* to decide on receive virtqueue to place the packet. The command |
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* also provides parameters to calculate a hash and receive virtqueue. |
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*/ |
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struct virtio_net_rss_config { |
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uint32_t hash_types; |
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uint16_t indirection_table_mask; |
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uint16_t unclassified_queue; |
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uint16_t indirection_table[1/* + indirection_table_mask */]; |
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uint16_t max_tx_vq; |
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uint8_t hash_key_length; |
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uint8_t hash_key_data[/* hash_key_length */]; |
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}; |
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#define VIRTIO_NET_CTRL_MQ_RSS_CONFIG 1 |
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/*
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* The command VIRTIO_NET_CTRL_MQ_HASH_CONFIG requests the device |
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* to include in the virtio header of the packet the value of the |
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* calculated hash and the report type of hash. It also provides |
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* parameters for hash calculation. The command requires feature |
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* VIRTIO_NET_F_HASH_REPORT to be negotiated to extend the |
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* layout of virtio header as defined in virtio_net_hdr_v1_hash. |
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*/ |
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struct virtio_net_hash_config { |
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uint32_t hash_types; |
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/* for compatibility with virtio_net_rss_config */ |
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uint16_t reserved[4]; |
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uint8_t hash_key_length; |
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uint8_t hash_key_data[/* hash_key_length */]; |
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}; |
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#define VIRTIO_NET_CTRL_MQ_HASH_CONFIG 2 |
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/*
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* Control network offloads |
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* |
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Cornelia Huck
6 years ago