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Allow recording of TX and RX errors to aid in end-user debugging.

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This commit is contained in:
Michael Brown
2007-07-05 17:18:27 +01:00
parent 07ea125213
commit 539ff45fd0
4 changed files with 92 additions and 28 deletions
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64
src/net/netdevice.c
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@@ -74,9 +74,7 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) {
return 0;
err:
DBGC ( netdev, "NETDEV %p transmission %p failed: %s\n",
netdev, iobuf, strerror ( rc ) );
netdev_tx_complete ( netdev, iobuf );
netdev_tx_complete_err ( netdev, iobuf, rc );
return rc;
}
@@ -85,11 +83,23 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) {
*
* @v netdev Network device
* @v iobuf I/O buffer
* @v rc Packet status code
*
* The packet must currently be in the network device's TX queue.
*/
void netdev_tx_complete ( struct net_device *netdev, struct io_buffer *iobuf ) {
DBGC ( netdev, "NETDEV %p transmission %p complete\n", netdev, iobuf );
void netdev_tx_complete_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc ) {
/* Update statistics counter */
if ( rc == 0 ) {
netdev->stats.tx_ok++;
DBGC ( netdev, "NETDEV %p transmission %p complete\n",
netdev, iobuf );
} else {
netdev->stats.tx_err++;
DBGC ( netdev, "NETDEV %p transmission %p failed: %s\n",
netdev, iobuf, strerror ( rc ) );
}
/* Catch data corruption as early as possible */
assert ( iobuf->list.next != NULL );
@@ -98,23 +108,21 @@ void netdev_tx_complete ( struct net_device *netdev, struct io_buffer *iobuf ) {
/* Dequeue and free I/O buffer */
list_del ( &iobuf->list );
free_iob ( iobuf );
/* Update statistics counter */
netdev->stats.tx_count++;
}
/**
* Complete network transmission
*
* @v netdev Network device
* @v rc Packet status code
*
* Completes the oldest outstanding packet in the TX queue.
*/
void netdev_tx_complete_next ( struct net_device *netdev ) {
void netdev_tx_complete_next_err ( struct net_device *netdev, int rc ) {
struct io_buffer *iobuf;
list_for_each_entry ( iobuf, &netdev->tx_queue, list ) {
netdev_tx_complete ( netdev, iobuf );
netdev_tx_complete_err ( netdev, iobuf, rc );
return;
}
}
@@ -128,7 +136,7 @@ static void netdev_tx_flush ( struct net_device *netdev ) {
/* Discard any packets in the TX queue */
while ( ! list_empty ( &netdev->tx_queue ) ) {
netdev_tx_complete_next ( netdev );
netdev_tx_complete_next_err ( netdev, -ECANCELED );
}
}
@@ -136,12 +144,13 @@ static void netdev_tx_flush ( struct net_device *netdev ) {
* Add packet to receive queue
*
* @v netdev Network device
* @v iobuf I/O buffer
* @v iobuf I/O buffer, or NULL
*
* The packet is added to the network device's RX queue. This
* function takes ownership of the I/O buffer.
*/
void netdev_rx ( struct net_device *netdev, struct io_buffer *iobuf ) {
DBGC ( netdev, "NETDEV %p received %p (%p+%zx)\n",
netdev, iobuf, iobuf->data, iob_len ( iobuf ) );
@@ -149,7 +158,32 @@ void netdev_rx ( struct net_device *netdev, struct io_buffer *iobuf ) {
list_add_tail ( &iobuf->list, &netdev->rx_queue );
/* Update statistics counter */
netdev->stats.rx_count++;
netdev->stats.rx_ok++;
}
/**
* Discard received packet
*
* @v netdev Network device
* @v iobuf I/O buffer, or NULL
* @v rc Packet status code
*
* The packet is discarded and an RX error is recorded. This function
* takes ownership of the I/O buffer. @c iobuf may be NULL if, for
* example, the net device wishes to report an error due to being
* unable to allocate an I/O buffer.
*/
void netdev_rx_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc ) {
DBGC ( netdev, "NETDEV %p failed to receive %p: %s\n",
netdev, iobuf, strerror ( rc ) );
/* Discard packet */
free_iob ( iobuf );
/* Update statistics counter */
netdev->stats.rx_err++;
}
/**
@@ -200,9 +234,7 @@ static void netdev_rx_flush ( struct net_device *netdev ) {
/* Discard any packets in the RX queue */
while ( ( iobuf = netdev_rx_dequeue ( netdev ) ) ) {
DBGC ( netdev, "NETDEV %p discarding received %p\n",
netdev, iobuf );
free_iob ( iobuf );
netdev_rx_err ( netdev, iobuf, -ECANCELED );
}
}