sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-21 20:40:25 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add RX quotas to the net device poll() method. This avoids the problem

Browse Source 
of alloc_pkb() exhaustion when e.g. an iSCSI-booted DOS session is left
idle for a long time at the C:\ prompt and builds up a huge packet
backlog.
This commit is contained in:
Michael Brown
2007-01-09 21:47:01 +00:00
parent e822bc2a90
commit c65fae2475
6 changed files with 75 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/include/gpxe/netdevice.h
View File

@@ -181,15 +181,16 @@ struct net_device {
/** Poll for received packet
*
* @v netdev Network device
* @v rx_quota Maximum number of packets to receive
*
* This method should cause the hardware to check for received
* packets. Any received packets should be delivered via
* netdev_rx().
* netdev_rx(), up to a maximum of @c rx_quota packets.
*
* This method is guaranteed to be called only when the device
* is open.
*/
void ( * poll ) ( struct net_device *netdev );
void ( * poll ) ( struct net_device *netdev, unsigned int rx_quota );
/** Link-layer protocol */
struct ll_protocol *ll_protocol;
@@ -238,7 +239,7 @@ extern int netdev_tx ( struct net_device *netdev, struct pk_buff *pkb );
void netdev_tx_complete ( struct net_device *netdev, struct pk_buff *pkb );
void netdev_tx_complete_next ( struct net_device *netdev );
extern void netdev_rx ( struct net_device *netdev, struct pk_buff *pkb );
extern int netdev_poll ( struct net_device *netdev );
extern int netdev_poll ( struct net_device *netdev, unsigned int rx_quota );
extern struct pk_buff * netdev_rx_dequeue ( struct net_device *netdev );
extern struct net_device * alloc_netdev ( size_t priv_size );
extern int register_netdev ( struct net_device *netdev );