diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/ipxe/netdevice.h | 14 | ||||
| -rw-r--r-- | src/net/netdevice.c | 4 |
2 files changed, 18 insertions, 0 deletions
diff --git a/src/include/ipxe/netdevice.h b/src/include/ipxe/netdevice.h index a7852a810..ac7cec521 100644 --- a/src/include/ipxe/netdevice.h +++ b/src/include/ipxe/netdevice.h @@ -236,6 +236,9 @@ struct net_device_operations { * * @v netdev Network device * @v enable Interrupts should be enabled + * + * This method may be NULL to indicate that interrupts are not + * supported. */ void ( * irq ) ( struct net_device *netdev, int enable ); }; @@ -516,6 +519,17 @@ netdev_is_open ( struct net_device *netdev ) { } /** + * Check whether or not network device supports interrupts + * + * @v netdev Network device + * @ret irq_supported Network device supports interrupts + */ +static inline __attribute__ (( always_inline )) int +netdev_irq_supported ( struct net_device *netdev ) { + return ( netdev->op->irq != NULL ); +} + +/** * Check whether or not network device interrupts are currently enabled * * @v netdev Network device diff --git a/src/net/netdevice.c b/src/net/netdevice.c index c7e907ad6..813823760 100644 --- a/src/net/netdevice.c +++ b/src/net/netdevice.c @@ -542,6 +542,10 @@ void unregister_netdev ( struct net_device *netdev ) { */ void netdev_irq ( struct net_device *netdev, int enable ) { + /* Do nothing if device does not support interrupts */ + if ( ! netdev_irq_supported ( netdev ) ) + return; + /* Enable or disable device interrupts */ netdev->op->irq ( netdev, enable ); |