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| author | Michael Brown | 2016-11-16 23:22:13 +0100 |
|---|---|---|
| committer | Michael Brown | 2016-11-16 23:22:13 +0100 |
| commit | daa8ed9274d91a157dc049f00792f62c98b0a11a (patch) | |
| tree | 7ce6edec2f46a6fcab3c0a1edc9c989e2b6c3885 /src/include | |
| parent | [build] Disable TIVOLI_VMM_WORKAROUND in the qemu configuration (diff) | |
| download | ipxe-daa8ed9274d91a157dc049f00792f62c98b0a11a.tar.gz ipxe-daa8ed9274d91a157dc049f00792f62c98b0a11a.tar.xz ipxe-daa8ed9274d91a157dc049f00792f62c98b0a11a.zip | |
[interface] Provide intf_reinit() to reinitialise nullified interfaces
Provide an abstraction intf_reinit() to restore the descriptor of a
previously nullified interface.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/interface.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/include/ipxe/interface.h b/src/include/ipxe/interface.h index a8d82377..ebb1b691 100644 --- a/src/include/ipxe/interface.h +++ b/src/include/ipxe/interface.h @@ -123,6 +123,11 @@ struct interface { struct refcnt *refcnt; /** Interface descriptor */ struct interface_descriptor *desc; + /** Original interface descriptor + * + * Used by intf_reinit(). + */ + struct interface_descriptor *original; }; extern void intf_plug ( struct interface *intf, struct interface *dest ); @@ -166,6 +171,7 @@ static inline void intf_init ( struct interface *intf, intf->dest = &null_intf; intf->refcnt = refcnt; intf->desc = desc; + intf->original = desc; } /** @@ -177,6 +183,7 @@ static inline void intf_init ( struct interface *intf, .dest = &null_intf, \ .refcnt = NULL, \ .desc = &(descriptor), \ + .original = &(descriptor), \ } /** @@ -236,4 +243,15 @@ static inline void intf_init ( struct interface *intf, */ #define INTF_INTF_DBG( intf, dest ) INTF_DBG ( intf ), INTF_DBG ( dest ) +/** + * Reinitialise an object interface + * + * @v intf Object interface + */ +static inline void intf_reinit ( struct interface *intf ) { + + /* Restore original interface descriptor */ + intf->desc = intf->original; +} + #endif /* _IPXE_INTERFACE_H */ |