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[efi] Add efi_path_prev() utility function

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2023-01-23 19:12:49 +00:00
parent 204d39222a
commit 1cd0a248cc
2 changed files with 23 additions and 7 deletions
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3
src/include/ipxe/efi/efi_path.h
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@@ -37,6 +37,9 @@ static inline void efi_path_terminate ( EFI_DEVICE_PATH_PROTOCOL *end ) {
extern EFI_DEVICE_PATH_PROTOCOL *
efi_path_next ( EFI_DEVICE_PATH_PROTOCOL *path );
extern EFI_DEVICE_PATH_PROTOCOL *
efi_path_prev ( EFI_DEVICE_PATH_PROTOCOL *path,
EFI_DEVICE_PATH_PROTOCOL *curr );
extern EFI_DEVICE_PATH_PROTOCOL *
efi_path_end ( EFI_DEVICE_PATH_PROTOCOL *path );
extern size_t efi_path_len ( EFI_DEVICE_PATH_PROTOCOL *path );
extern unsigned int efi_path_vlan ( EFI_DEVICE_PATH_PROTOCOL *path );