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[efi] Expose efi_path_next() utility function

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Provide a single central implementation of the logic for stepping
through elements of an EFI device path.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2022-12-22 13:33:38 +00:00
parent 0f3ace92c6
commit 099e4d39b3
3 changed files with 41 additions and 15 deletions
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2
src/include/ipxe/efi/efi_path.h
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@@ -21,6 +21,8 @@ struct fcp_description;
struct ib_srp_device;
struct usb_function;
extern EFI_DEVICE_PATH_PROTOCOL *
efi_path_next ( EFI_DEVICE_PATH_PROTOCOL *path );
extern EFI_DEVICE_PATH_PROTOCOL *
efi_path_end ( EFI_DEVICE_PATH_PROTOCOL *path );
extern size_t efi_path_len ( EFI_DEVICE_PATH_PROTOCOL *path );