net_backends.h (84659b24) | net_backends.h (154972af) |
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1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2019 Vincenzo Maffione <vmaffione@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 23 unchanged lines hidden (view full) --- 32 33#include <stdint.h> 34 35/* Opaque type representing a network backend. */ 36typedef struct net_backend net_backend_t; 37 38/* Interface between network frontends and the network backends. */ 39typedef void (*net_be_rxeof_t)(int, enum ev_type, void *param); | 1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2019 Vincenzo Maffione <vmaffione@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 23 unchanged lines hidden (view full) --- 32 33#include <stdint.h> 34 35/* Opaque type representing a network backend. */ 36typedef struct net_backend net_backend_t; 37 38/* Interface between network frontends and the network backends. */ 39typedef void (*net_be_rxeof_t)(int, enum ev_type, void *param); |
40int netbe_init(net_backend_t **be, const char *devname, net_be_rxeof_t cb, | 40int netbe_init(net_backend_t **be, const char *opts, net_be_rxeof_t cb, |
41 void *param); 42void netbe_cleanup(net_backend_t *be); 43uint64_t netbe_get_cap(net_backend_t *be); 44int netbe_set_cap(net_backend_t *be, uint64_t cap, 45 unsigned vnet_hdr_len); | 41 void *param); 42void netbe_cleanup(net_backend_t *be); 43uint64_t netbe_get_cap(net_backend_t *be); 44int netbe_set_cap(net_backend_t *be, uint64_t cap, 45 unsigned vnet_hdr_len); |
46ssize_t netbe_send(net_backend_t *be, struct iovec *iov, int iovcnt); 47ssize_t netbe_recv(net_backend_t *be, struct iovec *iov, int iovcnt); | 46size_t netbe_get_vnet_hdr_len(net_backend_t *be); 47ssize_t netbe_send(net_backend_t *be, const struct iovec *iov, int iovcnt); 48ssize_t netbe_peek_recvlen(net_backend_t *be); 49ssize_t netbe_recv(net_backend_t *be, const struct iovec *iov, int iovcnt); |
48ssize_t netbe_rx_discard(net_backend_t *be); | 50ssize_t netbe_rx_discard(net_backend_t *be); |
51void netbe_rx_disable(net_backend_t *be); 52void netbe_rx_enable(net_backend_t *be); |
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49 50 51/* 52 * Network device capabilities taken from the VirtIO standard. 53 * Despite the name, these capabilities can be used by different frontents 54 * (virtio-net, ptnet) and supported by different backends (netmap, tap, ...). 55 */ 56#define VIRTIO_NET_F_CSUM (1 << 0) /* host handles partial cksum */ 57#define VIRTIO_NET_F_GUEST_CSUM (1 << 1) /* guest handles partial cksum */ | 53 54 55/* 56 * Network device capabilities taken from the VirtIO standard. 57 * Despite the name, these capabilities can be used by different frontents 58 * (virtio-net, ptnet) and supported by different backends (netmap, tap, ...). 59 */ 60#define VIRTIO_NET_F_CSUM (1 << 0) /* host handles partial cksum */ 61#define VIRTIO_NET_F_GUEST_CSUM (1 << 1) /* guest handles partial cksum */ |
62#define VIRTIO_NET_F_MTU (1 << 3) /* initial MTU advice */ |
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58#define VIRTIO_NET_F_MAC (1 << 5) /* host supplies MAC */ 59#define VIRTIO_NET_F_GSO_DEPREC (1 << 6) /* deprecated: host handles GSO */ 60#define VIRTIO_NET_F_GUEST_TSO4 (1 << 7) /* guest can rcv TSOv4 */ 61#define VIRTIO_NET_F_GUEST_TSO6 (1 << 8) /* guest can rcv TSOv6 */ 62#define VIRTIO_NET_F_GUEST_ECN (1 << 9) /* guest can rcv TSO with ECN */ 63#define VIRTIO_NET_F_GUEST_UFO (1 << 10) /* guest can rcv UFO */ 64#define VIRTIO_NET_F_HOST_TSO4 (1 << 11) /* host can rcv TSOv4 */ 65#define VIRTIO_NET_F_HOST_TSO6 (1 << 12) /* host can rcv TSOv6 */ 66#define VIRTIO_NET_F_HOST_ECN (1 << 13) /* host can rcv TSO with ECN */ 67#define VIRTIO_NET_F_HOST_UFO (1 << 14) /* host can rcv UFO */ 68#define VIRTIO_NET_F_MRG_RXBUF (1 << 15) /* host can merge RX buffers */ 69#define VIRTIO_NET_F_STATUS (1 << 16) /* config status field available */ 70#define VIRTIO_NET_F_CTRL_VQ (1 << 17) /* control channel available */ 71#define VIRTIO_NET_F_CTRL_RX (1 << 18) /* control channel RX mode support */ 72#define VIRTIO_NET_F_CTRL_VLAN (1 << 19) /* control channel VLAN filtering */ 73#define VIRTIO_NET_F_GUEST_ANNOUNCE \ 74 (1 << 21) /* guest can send gratuitous pkts */ | 63#define VIRTIO_NET_F_MAC (1 << 5) /* host supplies MAC */ 64#define VIRTIO_NET_F_GSO_DEPREC (1 << 6) /* deprecated: host handles GSO */ 65#define VIRTIO_NET_F_GUEST_TSO4 (1 << 7) /* guest can rcv TSOv4 */ 66#define VIRTIO_NET_F_GUEST_TSO6 (1 << 8) /* guest can rcv TSOv6 */ 67#define VIRTIO_NET_F_GUEST_ECN (1 << 9) /* guest can rcv TSO with ECN */ 68#define VIRTIO_NET_F_GUEST_UFO (1 << 10) /* guest can rcv UFO */ 69#define VIRTIO_NET_F_HOST_TSO4 (1 << 11) /* host can rcv TSOv4 */ 70#define VIRTIO_NET_F_HOST_TSO6 (1 << 12) /* host can rcv TSOv6 */ 71#define VIRTIO_NET_F_HOST_ECN (1 << 13) /* host can rcv TSO with ECN */ 72#define VIRTIO_NET_F_HOST_UFO (1 << 14) /* host can rcv UFO */ 73#define VIRTIO_NET_F_MRG_RXBUF (1 << 15) /* host can merge RX buffers */ 74#define VIRTIO_NET_F_STATUS (1 << 16) /* config status field available */ 75#define VIRTIO_NET_F_CTRL_VQ (1 << 17) /* control channel available */ 76#define VIRTIO_NET_F_CTRL_RX (1 << 18) /* control channel RX mode support */ 77#define VIRTIO_NET_F_CTRL_VLAN (1 << 19) /* control channel VLAN filtering */ 78#define VIRTIO_NET_F_GUEST_ANNOUNCE \ 79 (1 << 21) /* guest can send gratuitous pkts */ |
80#define VIRTIO_NET_F_MQ (1 << 22) /* host supports multiple VQ pairs */ |
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75 76/* 77 * Fixed network header size 78 */ 79struct virtio_net_rxhdr { 80 uint8_t vrh_flags; 81 uint8_t vrh_gso_type; 82 uint16_t vrh_hdr_len; 83 uint16_t vrh_gso_size; 84 uint16_t vrh_csum_start; 85 uint16_t vrh_csum_offset; 86 uint16_t vrh_bufs; 87} __packed; 88 89#endif /* __NET_BACKENDS_H__ */ | 81 82/* 83 * Fixed network header size 84 */ 85struct virtio_net_rxhdr { 86 uint8_t vrh_flags; 87 uint8_t vrh_gso_type; 88 uint16_t vrh_hdr_len; 89 uint16_t vrh_gso_size; 90 uint16_t vrh_csum_start; 91 uint16_t vrh_csum_offset; 92 uint16_t vrh_bufs; 93} __packed; 94 95#endif /* __NET_BACKENDS_H__ */ |