engines:nvme: pull required 48 bit accessors from linux kernel

Pull the 48 bit helpers, required for supporting 48 bit reference tags. Add GPL 2.0 license to nvme.c and nvme.h files. Signed-off-by: Ankit Kumar <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Vincent Fu <[email protected]>
Dummyc0m · Aug 14, 2023 · ca59c41 · ca59c41
1 parent 377f62d
commit ca59c41
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diff --git a/engines/nvme.c b/engines/nvme.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * nvme structure declarations and helper functions for the
  * io_uring_cmd engine.

diff --git a/engines/nvme.h b/engines/nvme.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * nvme structure declarations and helper functions for the
  * io_uring_cmd engine.
@@ -440,4 +441,20 @@ int fio_nvme_reset_wp(struct thread_data *td, struct fio_file *f,
 int fio_nvme_get_max_open_zones(struct thread_data *td, struct fio_file *f,
 				unsigned int *max_open_zones);
 
+static inline void put_unaligned_be48(__u64 val, __u8 *p)
+{
+	*p++ = val >> 40;
+	*p++ = val >> 32;
+	*p++ = val >> 24;
+	*p++ = val >> 16;
+	*p++ = val >> 8;
+	*p++ = val;
+}
+
+static inline __u64 get_unaligned_be48(__u8 *p)
+{
+	return (__u64)p[0] << 40 | (__u64)p[1] << 32 | (__u64)p[2] << 24 |
+		p[3] << 16 | p[4] << 8 | p[5];
+}
+
 #endif