@@ -142,14 +142,6 @@ static void nvme_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc);
static const struct blk_mq_ops nvme_rdma_mq_ops;
static const struct blk_mq_ops nvme_rdma_admin_mq_ops;
-/* XXX: really should move to a generic header sooner or later.. */
-static inline void put_unaligned_le24(u32 val, u8 *p)
-{
- *p++ = val;
- *p++ = val >> 8;
- *p++ = val >> 16;
-}
-
static inline int nvme_rdma_queue_idx(struct nvme_rdma_queue *queue)
{
return queue - queue->ctrl->queues;
@@ -143,12 +143,6 @@ static int num_pages(int len)
return 1 + (((len - 1) & PAGE_MASK) >> PAGE_SHIFT);
}
-/* XXX: really should move to a generic header sooner or later.. */
-static inline u32 get_unaligned_le24(const u8 *p)
-{
- return (u32)p[0] | (u32)p[1] << 8 | (u32)p[2] << 16;
-}
-
static inline bool nvmet_rdma_need_data_in(struct nvmet_rdma_rsp *rsp)
{
return nvme_is_write(rsp->req.cmd) &&
@@ -216,6 +216,7 @@
#include <linux/freezer.h>
#include <linux/module.h>
#include <linux/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -172,11 +172,6 @@ enum data_direction {
DATA_DIR_NONE
};
-static inline u32 get_unaligned_be24(u8 *buf)
-{
- return 0xffffff & (u32) get_unaligned_be32(buf - 1);
-}
-
static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
{
return container_of(dev, struct fsg_lun, dev);
@@ -2,6 +2,8 @@
#ifndef _LINUX_UNALIGNED_GENERIC_H
#define _LINUX_UNALIGNED_GENERIC_H
+#include <linux/types.h>
+
/*
* Cause a link-time error if we try an unaligned access other than
* 1,2,4 or 8 bytes long
@@ -66,4 +68,46 @@ extern void __bad_unaligned_access_size(void);
} \
(void)0; })
+/* Only use get_unaligned_be24() if reading p - 1 is allowed. */
+#define get_unaligned_be24(p) (get_unaligned_be32((p) - 1) & 0xffffffu)
+
+#define get_unaligned_le24(p) (get_unaligned_le32((p)) & 0xffffffu)
+
+/* Sign-extend a 24-bit into a 32-bit integer. */
+static inline s32 sign_extend_24_to_32(u32 i)
+{
+ i &= 0xffffffu;
+ return i - ((i >> 23) << 24);
+}
+
+#define get_unaligned_signed_be24(p) \
+ sign_extend_24_to_32(get_unaligned_be24((p)))
+
+#define get_unaligned_signed_le24(p) \
+ sign_extend_24_to_32(get_unaligned_le24((p)))
+
+static inline void __put_unaligned_be24(u32 val, u8 *p)
+{
+ *p++ = val >> 16;
+ *p++ = val >> 8;
+ *p++ = val;
+}
+
+static inline void put_unaligned_be24(u32 val, void *p)
+{
+ __put_unaligned_be24(val, p);
+}
+
+static inline void __put_unaligned_le24(u32 val, u8 *p)
+{
+ *p++ = val;
+ *p++ = val >> 8;
+ *p++ = val >> 16;
+}
+
+static inline void put_unaligned_le24(u32 val, void *p)
+{
+ __put_unaligned_le24(val, p);
+}
+
#endif /* _LINUX_UNALIGNED_GENERIC_H */
@@ -116,10 +116,4 @@ static inline bool target_dev_configured(struct se_device *se_dev)
return !!(se_dev->dev_flags & DF_CONFIGURED);
}
-/* Only use get_unaligned_be24() if reading p - 1 is allowed. */
-static inline uint32_t get_unaligned_be24(const uint8_t *const p)
-{
- return get_unaligned_be32(p - 1) & 0xffffffU;
-}
-
#endif /* TARGET_CORE_BACKEND_H */
Move the get_unaligned_be24(), get_unaligned_le24() and put_unaligned_le24() definitions from various drivers into include/linux/unaligned/generic.h. Add a put_unaligned_be24() and get_unaligned_signed_[bl]e24() definitions. Change the functions that depend on get_unaligned_be32() into macros because <linux/unaligned/generic.h> may be included before get_unaligned_be32() has been redefined as a macro. Cc: Christoph Hellwig <hch@lst.de> Cc: Keith Busch <kbusch@kernel.org> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Jens Axboe <axboe@fb.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Harvey Harrison <harvey.harrison@gmail.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bart Van Assche <bvanassche@acm.org> --- drivers/nvme/host/rdma.c | 8 ---- drivers/nvme/target/rdma.c | 6 --- drivers/usb/gadget/function/f_mass_storage.c | 1 + drivers/usb/gadget/function/storage_common.h | 5 --- include/linux/unaligned/generic.h | 44 ++++++++++++++++++++ include/target/target_core_backend.h | 6 --- 6 files changed, 45 insertions(+), 25 deletions(-)