Exemplo n.º 1
0
/**
 * Poll for completed packets
 *
 * @v netdev		Network device
 */
static void myson_poll_tx ( struct net_device *netdev ) {
	struct myson_nic *myson = netdev->priv;
	struct myson_descriptor *tx;
	unsigned int tx_idx;

	/* Check for completed packets */
	while ( myson->tx.cons != myson->tx.prod ) {

		/* Get next transmit descriptor */
		tx_idx = ( myson->tx.cons % MYSON_NUM_TX_DESC );
		tx = &myson->tx.desc[tx_idx];

		/* Stop if descriptor is still in use */
		if ( tx->status & cpu_to_le32 ( MYSON_TX_STAT_OWN ) )
			return;

		/* Complete TX descriptor */
		if ( tx->status & cpu_to_le32 ( MYSON_TX_STAT_ABORT |
						MYSON_TX_STAT_CSL ) ) {
			DBGC ( myson, "MYSON %p TX %d completion error "
			       "(%08x)\n", myson, tx_idx,
			       le32_to_cpu ( tx->status ) );
			netdev_tx_complete_next_err ( netdev, -EIO );
		} else {
			DBGC2 ( myson, "MYSON %p TX %d complete\n",
				myson, tx_idx );
			netdev_tx_complete_next ( netdev );
		}
		myson->tx.cons++;
	}
}
Exemplo n.º 2
0
Arquivo: rhine.c Projeto: 42wim/ipxe
/**
 * Poll for completed packets
 *
 * @v netdev		Network device
 */
static void rhine_poll_tx ( struct net_device *netdev ) {
	struct rhine_nic *rhn = netdev->priv;
	struct rhine_descriptor *desc;
	unsigned int tx_idx;
	uint32_t des0;

	/* Check for completed packets */
	while ( rhn->tx.cons != rhn->tx.prod ) {

		/* Get next transmit descriptor */
		tx_idx = ( rhn->tx.cons % RHINE_TXDESC_NUM );
		desc = &rhn->tx.desc[tx_idx];

		/* Stop if descriptor is still in use */
		if ( desc->des0 & cpu_to_le32 ( RHINE_DES0_OWN ) )
			return;

		/* Complete TX descriptor */
		des0 = le32_to_cpu ( desc->des0 );
		if ( des0 & RHINE_TDES0_TERR ) {
			DBGC ( rhn, "RHINE %p TX %d error (DES0 %08x)\n",
			       rhn, tx_idx, des0 );
			netdev_tx_complete_next_err ( netdev, -EIO );
		} else {
			DBGC2 ( rhn, "RHINE %p TX %d complete\n", rhn, tx_idx );
			netdev_tx_complete_next ( netdev );
		}
		rhn->tx.cons++;
	}
}