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| author | Michael Brown | 2024-03-26 16:16:33 +0100 |
|---|---|---|
| committer | Michael Brown | 2024-03-26 16:16:33 +0100 |
| commit | 170bbfd4875b2a3479101b5f5892cdedcf857fd0 (patch) | |
| tree | 36f5aed7cdabbd80b26925ae729bf33ccf4d2926 | |
| parent | [efi] Add support for driving EFI_MANAGED_NETWORK_PROTOCOL devices (diff) | |
| download | ipxe-170bbfd4875b2a3479101b5f5892cdedcf857fd0.tar.gz ipxe-170bbfd4875b2a3479101b5f5892cdedcf857fd0.tar.xz ipxe-170bbfd4875b2a3479101b5f5892cdedcf857fd0.zip | |
[efi] Add efi_path_mac() to parse a MAC address from an EFI device path
Signed-off-by: Michael Brown <mcb30@ipxe.org>
| -rw-r--r-- | src/include/ipxe/efi/efi_path.h | 1 | ||||
| -rw-r--r-- | src/interface/efi/efi_path.c | 24 |
2 files changed, 25 insertions, 0 deletions
diff --git a/src/include/ipxe/efi/efi_path.h b/src/include/ipxe/efi/efi_path.h index 503bd434..57fce402 100644 --- a/src/include/ipxe/efi/efi_path.h +++ b/src/include/ipxe/efi/efi_path.h @@ -43,6 +43,7 @@ efi_path_prev ( 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 ); +extern void * efi_path_mac ( EFI_DEVICE_PATH_PROTOCOL *path ); extern unsigned int efi_path_vlan ( EFI_DEVICE_PATH_PROTOCOL *path ); extern int efi_path_guid ( EFI_DEVICE_PATH_PROTOCOL *path, union uuid *uuid ); extern struct uri * efi_path_uri ( EFI_DEVICE_PATH_PROTOCOL *path ); diff --git a/src/interface/efi/efi_path.c b/src/interface/efi/efi_path.c index 4e37d248..23f1bb84 100644 --- a/src/interface/efi/efi_path.c +++ b/src/interface/efi/efi_path.c @@ -112,6 +112,30 @@ size_t efi_path_len ( EFI_DEVICE_PATH_PROTOCOL *path ) { } /** + * Get MAC address from device path + * + * @v path Device path + * @ret mac MAC address, or NULL if not found + */ +void * efi_path_mac ( EFI_DEVICE_PATH_PROTOCOL *path ) { + EFI_DEVICE_PATH_PROTOCOL *next; + MAC_ADDR_DEVICE_PATH *mac; + + /* Search for MAC address path */ + for ( ; ( next = efi_path_next ( path ) ) ; path = next ) { + if ( ( path->Type == MESSAGING_DEVICE_PATH ) && + ( path->SubType == MSG_MAC_ADDR_DP ) ) { + mac = container_of ( path, MAC_ADDR_DEVICE_PATH, + Header ); + return &mac->MacAddress; + } + } + + /* No MAC address found */ + return NULL; +} + +/** * Get VLAN tag from device path * * @v path Device path |