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[netdevice] Allow non-completion TX errors to be recorded 

Allow TX errors to be recorded against a network device even when the
packet didn't make it as far as netdev_tx().

Inspired-by: Dominik Russenberger <dominik.russenberger@terreactive.ch>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/5/head
Michael Brown 2011-06-28 10:19:23 +01:00
parent 3fc139362c
commit d6115c91cf
2 changed files with 27 additions and 7 deletions
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2
src/include/ipxe/netdevice.h
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@ -586,6 +586,8 @@ netdev_rx_frozen ( struct net_device *netdev ) {
extern void netdev_link_err ( struct net_device *netdev, int rc ); extern void netdev_link_err ( struct net_device *netdev, int rc );
extern void netdev_link_down ( struct net_device *netdev ); extern void netdev_link_down ( struct net_device *netdev );
extern int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ); extern int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf );
extern void netdev_tx_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc );
extern void netdev_tx_complete_err ( struct net_device *netdev, extern void netdev_tx_complete_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc ); struct io_buffer *iobuf, int rc );
extern void netdev_tx_complete_next_err ( struct net_device *netdev, int rc ); extern void netdev_tx_complete_next_err ( struct net_device *netdev, int rc );

32
src/net/netdevice.c
View File

@ -194,16 +194,17 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) {
} }
/** /**
* Complete network transmission * Discard transmitted packet
* *
* @v netdev Network device * @v netdev Network device
* @v iobuf I/O buffer * @v iobuf I/O buffer, or NULL
* @v rc Packet status code * @v rc Packet status code
* *
* The packet must currently be in the network device's TX queue. * The packet is discarded and a TX error is recorded. This function
* takes ownership of the I/O buffer.
*/ */
void netdev_tx_complete_err ( struct net_device *netdev, void netdev_tx_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc ) { struct io_buffer *iobuf, int rc ) {
/* Update statistics counter */ /* Update statistics counter */
netdev_record_stat ( &netdev->tx_stats, rc ); netdev_record_stat ( &netdev->tx_stats, rc );
@ -215,12 +216,28 @@ void netdev_tx_complete_err ( struct net_device *netdev,
netdev->name, iobuf, strerror ( rc ) ); netdev->name, iobuf, strerror ( rc ) );
} }
/* Discard packet */
free_iob ( iobuf );
}
/**
* Complete network transmission
*
* @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_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc ) {
/* Catch data corruption as early as possible */ /* Catch data corruption as early as possible */
list_check_contains ( iobuf, &netdev->tx_queue, list ); list_check_contains ( iobuf, &netdev->tx_queue, list );
/* Dequeue and free I/O buffer */ /* Dequeue and free I/O buffer */
list_del ( &iobuf->list ); list_del ( &iobuf->list );
free_iob ( iobuf ); netdev_tx_err ( netdev, iobuf, rc );
} }
/** /**
@ -644,7 +661,8 @@ int net_tx ( struct io_buffer *iobuf, struct net_device *netdev,
/* Add link-layer header */ /* Add link-layer header */
if ( ( rc = ll_protocol->push ( netdev, iobuf, ll_dest, ll_source, if ( ( rc = ll_protocol->push ( netdev, iobuf, ll_dest, ll_source,
net_protocol->net_proto ) ) != 0 ) { net_protocol->net_proto ) ) != 0 ) {
free_iob ( iobuf ); /* Record error for diagnosis */
netdev_tx_err ( netdev, iobuf, rc );
return rc; return rc;
} }