static err_t
low_level_output(struct netif *netif, struct pbuf *p)
{
struct pbuf *q;
static xSemaphoreHandle xTxSemaphore = NULL;
err_t xReturn = ERR_OK;
/* Parameter not used. */
( void ) netif;
if( xTxSemaphore == NULL )
{
vSemaphoreCreateBinary( xTxSemaphore );
}
#if ETH_PAD_SIZE
pbuf_header( p, -ETH_PAD_SIZE ); /* drop the padding word */
#endif
/* Access to the MACB is guarded using a semaphore. */
if( xSemaphoreTake( xTxSemaphore, netifGUARD_BLOCK_TIME ) )
{
for( q = p; q != NULL; q = q->next )
{
/* Send the data from the pbuf to the interface, one pbuf at a
time. The size of the data in each pbuf is kept in the ->len
variable. if q->next == NULL then this is the last pbuf in the
chain. */
if( !lMACBSend(&AVR32_MACB, q->payload, q->len, ( q->next == NULL ) ) )
{
xReturn = ~ERR_OK;
}
}
xSemaphoreGive( xTxSemaphore );
}
#if ETH_PAD_SIZE
pbuf_header( p, ETH_PAD_SIZE ); /* reclaim the padding word */
#endif
#if LINK_STATS
lwip_stats.link.xmit++;
#endif /* LINK_STATS */
return xReturn;
}
static err_t
low_level_output(struct netif *netif, struct pbuf *p)
{
struct pbuf *q;
#ifdef FREERTOS_USED
static xSemaphoreHandle xTxSemaphore = NULL;
#endif
( void )netif; // Unused param, avoid a compiler warning.
#ifdef FREERTOS_USED
if( xTxSemaphore == NULL )
{
vSemaphoreCreateBinary( xTxSemaphore );
}
#endif
#if ETH_PAD_SIZE
pbuf_header( p, -ETH_PAD_SIZE ); /* drop the padding word */
#endif
#ifdef FREERTOS_USED
/* Access to the MACB is guarded using a semaphore. */
if( xSemaphoreTake( xTxSemaphore, netifGUARD_BLOCK_NBTICKS ) )
{
#endif
for( q = p; q != NULL; q = q->next )
{
/* Send the data from the pbuf to the interface, one pbuf at a time. The
size of the data in each pbuf is kept in the ->len variable.
This function also signals to the MACB that the packet should be sent. */
lMACBSend(&AVR32_MACB, q->payload, q->len, ( q->next == NULL ) );
}
#ifdef FREERTOS_USED
xSemaphoreGive( xTxSemaphore );
}
#endif
#if ETH_PAD_SIZE
pbuf_header( p, ETH_PAD_SIZE ); /* reclaim the padding word */
#endif
LINK_STATS_INC(link.xmit); // Traces
return ERR_OK;
}
