usr.sbin/bhyve/net_backends.c

30  * to be used by network frontends such as virtio-net and e1000.
71 #define	NET_BE_SIZE(be)		(sizeof(*be) + (be)->priv_size)
74 tap_cleanup(struct net_backend *be)
76 	struct tap_priv *priv = NET_BE_PRIV(be);
81 	if (be->fd != -1) {
82 		close(be->fd);
83 		be->fd = -1;
88 tap_init(struct net_backend *be, const char *devname,
91 	struct tap_priv *priv = NET_BE_PRIV(be);
107 	be->fd = open(tbuf, O_RDWR);
108 	if (be->fd == -1) {
117 	if (ioctl(be->fd, FIONBIO, &opt) < 0) {
122 	if (ioctl(be->fd, VMIO_SIOCSIFFLAGS, up)) {
129 	if (caph_rights_limit(be->fd, &rights) == -1)
136 	priv->mevp = mevent_add_disabled(be->fd, EVF_READ, cb, param);
145 	tap_cleanup(be);
153 tap_send(struct net_backend *be, const struct iovec *iov, int iovcnt)
155 	return (writev(be->fd, iov, iovcnt));
159 tap_peek_recvlen(struct net_backend *be)
161 	struct tap_priv *priv = NET_BE_PRIV(be);
177 	ret = read(be->fd, priv->bbuf, sizeof(priv->bbuf));
189 tap_recv(struct net_backend *be, const struct iovec *iov, int iovcnt)
191 	struct tap_priv *priv = NET_BE_PRIV(be);
208 	ret = readv(be->fd, iov, iovcnt);
217 tap_recv_enable(struct net_backend *be)
219 	struct tap_priv *priv = NET_BE_PRIV(be);
225 tap_recv_disable(struct net_backend *be)
227 	struct tap_priv *priv = NET_BE_PRIV(be);
233 tap_get_cap(struct net_backend *be __unused)
240 tap_set_cap(struct net_backend *be __unused, uint64_t features,
301  *  @ret is a pointer to the backend to be initialized
379 netbe_cleanup(struct net_backend *be)
382 	if (be != NULL) {
383 		be->cleanup(be);
384 		free(be);
389 netbe_get_cap(struct net_backend *be)
392 	assert(be != NULL);
393 	return (be->get_cap(be));
397 netbe_set_cap(struct net_backend *be, uint64_t features,
402 	assert(be != NULL);
409 	be->fe_vnet_hdr_len = vnet_hdr_len;
411 	ret = be->set_cap(be, features, vnet_hdr_len);
412 	assert(be->be_vnet_hdr_len == 0 ||
413 	       be->be_vnet_hdr_len == be->fe_vnet_hdr_len);
419 netbe_send(struct net_backend *be, const struct iovec *iov, int iovcnt)
422 	return (be->send(be, iov, iovcnt));
426 netbe_peek_recvlen(struct net_backend *be)
429 	return (be->peek_recvlen(be));
438 netbe_recv(struct net_backend *be, const struct iovec *iov, int iovcnt)
441 	return (be->recv(be, iov, iovcnt));
450 netbe_rx_discard(struct net_backend *be)
454 	 * so there is no need for it to be per-vtnet or locked.
463 	return netbe_recv(be, &iov, 1);
467 netbe_rx_disable(struct net_backend *be)
470 	return be->recv_disable(be);
474 netbe_rx_enable(struct net_backend *be)
477 	return be->recv_enable(be);
481 netbe_get_vnet_hdr_len(struct net_backend *be)
484 	return (be->be_vnet_hdr_len);