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virtio_net: Update virtio_net.h from FreeBSD.

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No functional change intended.
This commit is contained in:
Augustin Cavalier
2024-07-30 13:16:27 -04:00
parent e49b2154fe
commit 63ea85a225
1 changed files with 76 additions and 29 deletions
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src/add-ons/kernel/drivers/network/ether/virtio/virtio_net.h
+76 -29
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@@ -1,4 +1,6 @@
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* This header is BSD licensed so anyone can use the definitions to implement
* compatible drivers/servers.
*
@@ -24,36 +26,35 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VIRTIO_NET_H
#define _VIRTIO_NET_H
/* The feature bitmap for virtio net */
#define VIRTIO_NET_F_CSUM 0x00001 /* Host handles pkts w/ partial csum */
#define VIRTIO_NET_F_GUEST_CSUM 0x00002 /* Guest handles pkts w/ partial csum*/
#define VIRTIO_NET_F_MTU 0x00008 /* Initial MTU advice. */
#define VIRTIO_NET_F_MAC 0x00020 /* Host has given MAC address. */
#define VIRTIO_NET_F_GSO 0x00040 /* Host handles pkts w/ any GSO type */
#define VIRTIO_NET_F_GUEST_TSO4 0x00080 /* Guest can handle TSOv4 in. */
#define VIRTIO_NET_F_GUEST_TSO6 0x00100 /* Guest can handle TSOv6 in. */
#define VIRTIO_NET_F_GUEST_ECN 0x00200 /* Guest can handle TSO[6] w/ ECN in.*/
#define VIRTIO_NET_F_GUEST_UFO 0x00400 /* Guest can handle UFO in. */
#define VIRTIO_NET_F_HOST_TSO4 0x00800 /* Host can handle TSOv4 in. */
#define VIRTIO_NET_F_HOST_TSO6 0x01000 /* Host can handle TSOv6 in. */
#define VIRTIO_NET_F_HOST_ECN 0x02000 /* Host can handle TSO[6] w/ ECN in. */
#define VIRTIO_NET_F_HOST_UFO 0x04000 /* Host can handle UFO in. */
#define VIRTIO_NET_F_MRG_RXBUF 0x08000 /* Host can merge receive buffers. */
#define VIRTIO_NET_F_STATUS 0x10000 /* virtio_net_config.status available*/
#define VIRTIO_NET_F_CTRL_VQ 0x20000 /* Control channel available */
#define VIRTIO_NET_F_CTRL_RX 0x40000 /* Control channel RX mode support */
#define VIRTIO_NET_F_CTRL_VLAN 0x80000 /* Control channel VLAN filtering */
#define VIRTIO_NET_F_CTRL_RX_EXTRA 0x100000 /* Extra RX mode control support */
#define VIRTIO_NET_F_GUEST_ANNOUNCE 0x200000 /* Announce device on network */
#define VIRTIO_NET_F_MQ 0x400000 /* Device supports RFS */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 0x800000 /* Set MAC address */
#define VIRTIO_NET_F_CSUM 0x000001 /* Host handles pkts w/ partial csum */
#define VIRTIO_NET_F_GUEST_CSUM 0x000002 /* Guest handles pkts w/ partial csum*/
#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 0x000004 /* Dynamic offload configuration. */
#define VIRTIO_NET_F_MTU 0x000008 /* Initial MTU advice */
#define VIRTIO_NET_F_MAC 0x000020 /* Host has given MAC address. */
#define VIRTIO_NET_F_GSO 0x000040 /* Host handles pkts w/ any GSO type */
#define VIRTIO_NET_F_GUEST_TSO4 0x000080 /* Guest can handle TSOv4 in. */
#define VIRTIO_NET_F_GUEST_TSO6 0x000100 /* Guest can handle TSOv6 in. */
#define VIRTIO_NET_F_GUEST_ECN 0x000200 /* Guest can handle TSO[6] w/ ECN in. */
#define VIRTIO_NET_F_GUEST_UFO 0x000400 /* Guest can handle UFO in. */
#define VIRTIO_NET_F_HOST_TSO4 0x000800 /* Host can handle TSOv4 in. */
#define VIRTIO_NET_F_HOST_TSO6 0x001000 /* Host can handle TSOv6 in. */
#define VIRTIO_NET_F_HOST_ECN 0x002000 /* Host can handle TSO[6] w/ ECN in. */
#define VIRTIO_NET_F_HOST_UFO 0x004000 /* Host can handle UFO in. */
#define VIRTIO_NET_F_MRG_RXBUF 0x008000 /* Host can merge receive buffers. */
#define VIRTIO_NET_F_STATUS 0x010000 /* virtio_net_config.status available*/
#define VIRTIO_NET_F_CTRL_VQ 0x020000 /* Control channel available */
#define VIRTIO_NET_F_CTRL_RX 0x040000 /* Control channel RX mode support */
#define VIRTIO_NET_F_CTRL_VLAN 0x080000 /* Control channel VLAN filtering */
#define VIRTIO_NET_F_CTRL_RX_EXTRA 0x100000 /* Extra RX mode control support */
#define VIRTIO_NET_F_GUEST_ANNOUNCE 0x200000 /* Announce device on network */
#define VIRTIO_NET_F_MQ 0x400000 /* Device supports Receive Flow Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 0x800000 /* Set MAC address */
#define VIRTIO_NET_F_SPEED_DUPLEX (1ULL << 63) /* Device set linkspeed and duplex */
#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
@@ -69,19 +70,32 @@ struct virtio_net_config {
* Legal values are between 1 and 0x8000.
*/
uint16_t max_virtqueue_pairs;
/* Default maximum transmit unit advice */
uint16_t mtu;
/*
* speed, in units of 1Mb. All values 0 to INT_MAX are legal.
* Any other value stands for unknown.
*/
uint32_t speed;
/*
* 0x00 - half duplex
* 0x01 - full duplex
* Any other value stands for unknown.
*/
uint8_t duplex;
} _PACKED;
/*
* This is the first element of the scatter-gather list. If you don't
* This header comes first in the scatter-gather list. If you don't
* specify GSO or CSUM features, you can simply ignore the header.
*
* This is bitwise-equivalent to the legacy struct virtio_net_hdr_mrg_rxbuf,
* only flattened.
*/
struct virtio_net_hdr {
#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start,csum_offset*/
struct virtio_net_hdr_v1 {
#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */
#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */
uint8_t flags;
uint8_t flags;
#define VIRTIO_NET_HDR_GSO_NONE 0 /* Not a GSO frame */
#define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
#define VIRTIO_NET_HDR_GSO_UDP 3 /* GSO frame, IPv4 UDP (UFO) */
@@ -92,6 +106,24 @@ struct virtio_net_hdr {
uint16_t gso_size; /* Bytes to append to hdr_len per frame */
uint16_t csum_start; /* Position to start checksumming from */
uint16_t csum_offset; /* Offset after that to place checksum */
uint16_t num_buffers; /* Number of merged rx buffers */
};
/*
* This header comes first in the scatter-gather list.
* For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated, it must
* be the first element of the scatter-gather list. If you don't
* specify GSO or CSUM features, you can simply ignore the header.
*/
struct virtio_net_hdr {
/* See VIRTIO_NET_HDR_F_* */
uint8_t flags;
/* See VIRTIO_NET_HDR_GSO_* */
uint8_t gso_type;
uint16_t hdr_len; /* Ethernet + IP + tcp/udp hdrs */
uint16_t gso_size; /* Bytes to append to hdr_len per frame */
uint16_t csum_start; /* Position to start checksumming from */
uint16_t csum_offset; /* Offset after that to place checksum */
};
/*
@@ -178,7 +210,7 @@ struct virtio_net_ctrl_mac {
* Control link announce acknowledgement
*
* The command VIRTIO_NET_CTRL_ANNOUNCE_ACK is used to indicate that
* driver has recevied the notification; device would clear the
* driver has received the notification; device would clear the
* VIRTIO_NET_S_ANNOUNCE bit in the status field after it receives
* this command.
*/
@@ -205,4 +237,19 @@ struct virtio_net_ctrl_mq {
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
/*
* Control network offloads
*
* Reconfigures the network offloads that Guest can handle.
*
* Available with the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature bit.
*
* Command data format matches the feature bit mask exactly.
*
* See VIRTIO_NET_F_GUEST_* for the list of offloads
* that can be enabled/disabled.
*/
#define VIRTIO_NET_CTRL_GUEST_OFFLOADS 5
#define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET 0
#endif /* _VIRTIO_NET_H */