Differential D17364 Diff 49494 head/sys/net/netmap_user.h

Changeset View

Standalone View

head/sys/net/netmap_user.h

	Show First 20 Lines • Show All 1,023 Lines • ▼ Show 20 Lines
	nm_inject(struct nm_desc d, const void buf, size_t size)			nm_inject(struct nm_desc d, const void buf, size_t size)
	{			{
	u_int c, n = d->last_tx_ring - d->first_tx_ring + 1,			u_int c, n = d->last_tx_ring - d->first_tx_ring + 1,
	ri = d->cur_tx_ring;			ri = d->cur_tx_ring;

	for (c = 0; c < n ; c++, ri++) {			for (c = 0; c < n ; c++, ri++) {
	/* compute current ring to use */			/* compute current ring to use */
	struct netmap_ring *ring;			struct netmap_ring *ring;
	uint32_t i, idx;			uint32_t i, j, idx;
				size_t rem;

	if (ri > d->last_tx_ring)			if (ri > d->last_tx_ring)
	ri = d->first_tx_ring;			ri = d->first_tx_ring;
	ring = NETMAP_TXRING(d->nifp, ri);			ring = NETMAP_TXRING(d->nifp, ri);
	if (nm_ring_empty(ring)) {			rem = size;
	continue;			j = ring->cur;
				while (rem > ring->nr_buf_size && j != ring->tail) {
				rem -= ring->nr_buf_size;
				j = nm_ring_next(ring, j);
	}			}
				if (j == ring->tail && rem > 0)
				continue;
	i = ring->cur;			i = ring->cur;
				while (i != j) {
	idx = ring->slot[i].buf_idx;			idx = ring->slot[i].buf_idx;
	ring->slot[i].len = size;			ring->slot[i].len = ring->nr_buf_size;
	nm_pkt_copy(buf, NETMAP_BUF(ring, idx), size);			ring->slot[i].flags = NS_MOREFRAG;
	d->cur_tx_ring = ri;			nm_pkt_copy(buf, NETMAP_BUF(ring, idx), ring->nr_buf_size);
				i = nm_ring_next(ring, i);
				buf = (char *)buf + ring->nr_buf_size;
				}
				idx = ring->slot[i].buf_idx;
				ring->slot[i].len = rem;
				ring->slot[i].flags = 0;
				nm_pkt_copy(buf, NETMAP_BUF(ring, idx), rem);
	ring->head = ring->cur = nm_ring_next(ring, i);			ring->head = ring->cur = nm_ring_next(ring, i);
				d->cur_tx_ring = ri;
	return size;			return size;
	}			}
	return 0; /* fail */			return 0; /* fail */
	}			}


	/*			/*
	* Same prototype as pcap_dispatch(), only need to cast.			* Same prototype as pcap_dispatch(), only need to cast.
	▲ Show 20 Lines • Show All 85 Lines • Show Last 20 Lines