/**
* 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++;
}
}
/**
* 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++;
}
}