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| author | Michael Brown <mcb30@ipxe.org> | 2023-09-13 16:29:59 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2023-09-13 20:23:46 +0100 |
| commit | ae4e85bde97c9b216736a5087039f3309a628d24 (patch) | |
| tree | 39d706e2f330bd015d11ce38193c1baeab207cc8 /src/include | |
| parent | eeb7cd56e54e2bc649626988872c170fba37c163 (diff) | |
| download | ipxe-ae4e85bde97c9b216736a5087039f3309a628d24.zip ipxe-ae4e85bde97c9b216736a5087039f3309a628d24.tar.gz ipxe-ae4e85bde97c9b216736a5087039f3309a628d24.tar.bz2 | |
[netdevice] Allocate private data for each network upper-layer driver
Allow network upper-layer drivers (such as LLDP, which attaches to
each network device in order to provide a corresponding LLDP settings
block) to specify a size for private data, which will be allocated as
part of the network device structure (as with the existing private
data allocated for the underlying device driver).
This will allow network upper-layer drivers to be simplified by
omitting memory allocation and freeing code. If the upper-layer
driver requires a reference counter (e.g. for interface
initialisation), then it may use the network device's existing
reference counter, since this is now the reference counter for the
containing block of memory.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/netdevice.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/include/ipxe/netdevice.h b/src/include/ipxe/netdevice.h index a65dbfd..caa83b4 100644 --- a/src/include/ipxe/netdevice.h +++ b/src/include/ipxe/netdevice.h @@ -473,22 +473,27 @@ struct net_device { struct net_driver { /** Name */ const char *name; + /** Size of private data */ + size_t priv_len; /** Probe device * * @v netdev Network device + * @v priv Private data * @ret rc Return status code */ - int ( * probe ) ( struct net_device *netdev ); + int ( * probe ) ( struct net_device *netdev, void *priv ); /** Notify of device or link state change * * @v netdev Network device + * @v priv Private data */ - void ( * notify ) ( struct net_device *netdev ); + void ( * notify ) ( struct net_device *netdev, void *priv ); /** Remove device * * @v netdev Network device + * @v priv Private data */ - void ( * remove ) ( struct net_device *netdev ); + void ( * remove ) ( struct net_device *netdev, void *priv ); }; /** Network driver table */ @@ -688,6 +693,8 @@ netdev_rx_frozen ( struct net_device *netdev ) { return ( netdev->state & NETDEV_RX_FROZEN ); } +extern void * netdev_priv ( struct net_device *netdev, + struct net_driver *driver ); extern void netdev_rx_freeze ( struct net_device *netdev ); extern void netdev_rx_unfreeze ( struct net_device *netdev ); extern void netdev_link_err ( struct net_device *netdev, int rc ); |