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[vlan] Allow external code to identify VLAN priority as well as tag 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/838/head
Michael Brown 2022-12-09 14:40:54 +00:00
parent b0ded89e91
commit 5e62b4bc6c
3 changed files with 19 additions and 7 deletions
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14
src/include/ipxe/vlan.h
View File

@ -61,7 +61,19 @@ struct vlan_header {
*/
#define VLAN_PRIORITY_IS_VALID( priority ) ( (priority) <= 7 )
extern unsigned int vlan_tag ( struct net_device *netdev );
extern unsigned int vlan_tci ( struct net_device *netdev );
/**
* Get the VLAN tag
*
* @v netdev Network device
* @ret tag VLAN tag, or 0 if device is not a VLAN device
*/
static inline __attribute__ (( always_inline )) unsigned int
vlan_tag ( struct net_device *netdev ) {
return VLAN_TAG ( vlan_tci ( netdev ) );
}
extern int vlan_can_be_trunk ( struct net_device *trunk );
extern int vlan_create ( struct net_device *trunk, unsigned int tag,
unsigned int priority );

4
src/net/netdevice.c
View File

@ -1171,12 +1171,12 @@ static void net_step ( struct process *process __unused ) {
}
/**
* Get the VLAN tag (when VLAN support is not present)
* Get the VLAN tag control information (when VLAN support is not present)
*
* @v netdev Network device
* @ret tag 0, indicating that device is not a VLAN device
*/
__weak unsigned int vlan_tag ( struct net_device *netdev __unused ) {
__weak unsigned int vlan_tci ( struct net_device *netdev __unused ) {
return 0;
}

8
src/net/vlan.c
View File

@ -288,17 +288,17 @@ struct net_protocol vlan_protocol __net_protocol = {
};
/**
* Get the VLAN tag
* Get the VLAN tag control information
*
* @v netdev Network device
* @ret tag VLAN tag, or 0 if device is not a VLAN device
* @ret tci VLAN tag control information, or 0 if not a VLAN device
*/
unsigned int vlan_tag ( struct net_device *netdev ) {
unsigned int vlan_tci ( struct net_device *netdev ) {
struct vlan_device *vlan;
if ( netdev->op == &vlan_operations ) {
vlan = netdev->priv;
return vlan->tag;
return ( VLAN_TCI ( vlan->tag, vlan->priority ) );
} else {
return 0;
}