Ejemplos de efx_tx_queue_insert en C++ (Cpp)

Ejemplo n.º 1

Archivo: tx.c Proyecto: LouZiffer/m900_kernel_cupcake-SDX

/**
 * tso_fill_packet_with_fragment - form descriptors for the current fragment
 * @tx_queue:		Efx TX queue
 * @skb:		Socket buffer
 * @st:			TSO state
 *
 * Form descriptors for the current fragment, until we reach the end
 * of fragment or end-of-packet.  Return 0 on success, 1 if not enough
 * space in @tx_queue.
 */
static inline int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
						const struct sk_buff *skb,
						struct tso_state *st)
{

	int n, end_of_packet, rc;

	if (st->ifc.len == 0)
		return 0;
	if (st->packet_space == 0)
		return 0;

	EFX_BUG_ON_PARANOID(st->ifc.len <= 0);
	EFX_BUG_ON_PARANOID(st->packet_space <= 0);

	n = min(st->ifc.len, st->packet_space);

	st->packet_space -= n;
	st->remaining_len -= n;
	st->ifc.len -= n;
	st->ifc.page_off += n;
	end_of_packet = st->remaining_len == 0 || st->packet_space == 0;

	rc = efx_tx_queue_insert(tx_queue, st->ifc.dma_addr, n,
				 st->remaining_len ? NULL : skb,
				 end_of_packet, st->ifc.unmap_addr,
				 st->ifc.len ? 0 : st->ifc.unmap_len);

	st->ifc.dma_addr += n;

	return rc;
}

Ejemplo n.º 2

Archivo: tx.c Proyecto: ANFS/ANFS-kernel

/**
 * tso_fill_packet_with_fragment - form descriptors for the current fragment
 * @tx_queue:		Efx TX queue
 * @skb:		Socket buffer
 * @st:			TSO state
 *
 * Form descriptors for the current fragment, until we reach the end
 * of fragment or end-of-packet.  Return 0 on success, 1 if not enough
 * space in @tx_queue.
 */
static int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
					 const struct sk_buff *skb,
					 struct tso_state *st)
{
	struct efx_tx_buffer *buffer;
	int n, end_of_packet, rc;

	if (st->in_len == 0)
		return 0;
	if (st->packet_space == 0)
		return 0;

	EFX_BUG_ON_PARANOID(st->in_len <= 0);
	EFX_BUG_ON_PARANOID(st->packet_space <= 0);

	n = min(st->in_len, st->packet_space);

	st->packet_space -= n;
	st->out_len -= n;
	st->in_len -= n;

	rc = efx_tx_queue_insert(tx_queue, st->dma_addr, n, &buffer);
	if (likely(rc == 0)) {
		if (st->out_len == 0)
			/* Transfer ownership of the skb */
			buffer->skb = skb;

		end_of_packet = st->out_len == 0 || st->packet_space == 0;
		buffer->continuation = !end_of_packet;

		if (st->in_len == 0) {
			/* Transfer ownership of the pci mapping */
			buffer->unmap_len = st->unmap_len;
			buffer->unmap_single = st->unmap_single;
			st->unmap_len = 0;
		}
	}

	st->dma_addr += n;
	return rc;
}

Ejemplo n.º 3

Archivo: tx_tso.c Proyecto: majek/openonload

/**
 * tso_fill_packet_with_fragment - form descriptors for the current fragment
 * @tx_queue:		Efx TX queue
 * @skb:		Socket buffer
 * @st:			TSO state
 *
 * Form descriptors for the current fragment, until we reach the end
 * of fragment or end-of-packet.
 */
static void tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
					  const struct sk_buff *skb,
					  struct tso_state *st)
{
	struct efx_tx_buffer *buffer;
	int n;

	if (st->in_len == 0)
		return;
	if (st->packet_space == 0)
		return;

	EFX_WARN_ON_ONCE_PARANOID(st->in_len <= 0);
	EFX_WARN_ON_ONCE_PARANOID(st->packet_space <= 0);

	n = min(st->in_len, st->packet_space);

	st->packet_space -= n;
	st->out_len -= n;
	st->in_len -= n;

	efx_tx_queue_insert(tx_queue, st->dma_addr, n, &buffer);

	if (st->out_len == 0) {
		/* Transfer ownership of the skb */
		buffer->skb = skb;
		buffer->flags = EFX_TX_BUF_SKB;
	} else if (st->packet_space != 0) {
		buffer->flags = EFX_TX_BUF_CONT;
	}

	if (st->in_len == 0) {
		/* Transfer ownership of the DMA mapping */
		buffer->unmap_len = st->unmap_len;
		buffer->dma_offset = buffer->unmap_len - buffer->len;
		buffer->flags |= st->dma_flags;
		st->unmap_len = 0;
	}

	st->dma_addr += n;
}