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| author | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
|---|---|---|
| committer | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
| commit | 41710e1b810aa25c14ceb657a40b9ba616615435 (patch) | |
| tree | 4953322c9930fde10dae9ff057de28827e87fb52 /ebpf/include/linux/nvram.h | |
| parent | 4a51050c498da33eaecb520b78aeb5f445a442f1 (diff) | |
| download | tailscale-danderson/ebpf.tar.xz tailscale-danderson/ebpf.zip | |
ebpf: experiments.danderson/ebpf
Diffstat (limited to 'ebpf/include/linux/nvram.h')
| -rw-r--r-- | ebpf/include/linux/nvram.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/ebpf/include/linux/nvram.h b/ebpf/include/linux/nvram.h new file mode 100644 index 000000000..e09187232 --- /dev/null +++ b/ebpf/include/linux/nvram.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _LINUX_NVRAM_H +#define _LINUX_NVRAM_H + +#include <linux/ioctl.h> + +/* /dev/nvram ioctls */ +#define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */ +#define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */ + +/* for all current systems, this is where NVRAM starts */ +#define NVRAM_FIRST_BYTE 14 +/* all these functions expect an NVRAM offset, not an absolute */ +#define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE) + + +#endif /* _LINUX_NVRAM_H */ |