sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-24 06:22:59 +03:00
Code Issues Packages Projects Releases Wiki Activity

[netdevice] Add mechanism for reporting detailed link status codes

Browse Source 
Expand the NETDEV_LINK_UP bit into a link_rc status code field,
allowing specific reasons for link failure to be reported via
"ifstat".

Originally-authored-by: Joshua Oreman <oremanj@rwcr.net>
This commit is contained in:
Michael Brown
2009-06-24 12:52:38 +01:00
parent cb9700ef6f
commit a310d00d37
4 changed files with 48 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/include/gpxe/netdevice.h
View File

@@ -267,6 +267,12 @@ struct net_device {
* This is the bitwise-OR of zero or more NETDEV_XXX constants.
*/
unsigned int state;
/** Link status code
*
* Zero indicates that the link is up; any other value
* indicates the error preventing link-up.
*/
int link_rc;
/** Maximum packet length
*
* This length includes any link-layer headers.
@@ -291,9 +297,6 @@ struct net_device {
/** Network device is open */
#define NETDEV_OPEN 0x0001
/** Network device has link */
#define NETDEV_LINK_UP 0x0002
/** Link-layer protocol table */
#define LL_PROTOCOLS __table ( struct ll_protocol, "ll_protocols" )
@@ -420,17 +423,18 @@ netdev_settings_init ( struct net_device *netdev ) {
*/
static inline __attribute__ (( always_inline )) void
netdev_link_up ( struct net_device *netdev ) {
netdev->state |= NETDEV_LINK_UP;
netdev->link_rc = 0;
}
/**
* Mark network device as having link down
* Mark network device as having link down due to a specific error
*
* @v netdev Network device
* @v rc Link status code
*/
static inline __attribute__ (( always_inline )) void
netdev_link_down ( struct net_device *netdev ) {
netdev->state &= ~NETDEV_LINK_UP;
netdev_link_err ( struct net_device *netdev, int rc ) {
netdev->link_rc = rc;
}
/**
@@ -441,9 +445,10 @@ netdev_link_down ( struct net_device *netdev ) {
*/
static inline __attribute__ (( always_inline )) int
netdev_link_ok ( struct net_device *netdev ) {
return ( netdev->state & NETDEV_LINK_UP );
return ( netdev->link_rc == 0 );
}
extern void netdev_link_down ( struct net_device *netdev );
extern int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf );
extern void netdev_tx_complete_err ( struct net_device *netdev,
struct io_buffer *iobuf, int rc );