diff options
| author | Guoqing Jiang <guoqing.jiang@linux.dev> | 2023-11-13 12:57:17 +0100 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-11-15 14:58:13 +0100 |
| commit | 6a343cc3bf2626bc0c487bf2a72c90b4519c3da4 (patch) | |
| tree | a94ab2dfd78410cee9f3f0f2321879ab0d91df09 /drivers/infiniband/sw/siw | |
| parent | RDMA/siw: Factor out siw_rx_data helper (diff) | |
| download | linux-6a343cc3bf2626bc0c487bf2a72c90b4519c3da4.tar.xz linux-6a343cc3bf2626bc0c487bf2a72c90b4519c3da4.zip | |
RDMA/siw: Introduce SIW_STAG_MAX_INDEX
Add the macro to remove magic number in the code.
Acked-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Link: https://lore.kernel.org/r/20231113115726.12762-9-guoqing.jiang@linux.dev
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband/sw/siw')
| -rw-r--r-- | drivers/infiniband/sw/siw/siw_mem.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c index 2110ceb0603c..dcb963607c8b 100644 --- a/drivers/infiniband/sw/siw/siw_mem.c +++ b/drivers/infiniband/sw/siw/siw_mem.c @@ -14,18 +14,20 @@ #include "siw.h" #include "siw_mem.h" +/* Stag lookup is based on its index part only (24 bits). */ +#define SIW_STAG_MAX_INDEX 0x00ffffff + /* - * Stag lookup is based on its index part only (24 bits). * The code avoids special Stag of zero and tries to randomize * STag values between 1 and SIW_STAG_MAX_INDEX. */ int siw_mem_add(struct siw_device *sdev, struct siw_mem *m) { - struct xa_limit limit = XA_LIMIT(1, 0x00ffffff); + struct xa_limit limit = XA_LIMIT(1, SIW_STAG_MAX_INDEX); u32 id, next; get_random_bytes(&next, 4); - next &= 0x00ffffff; + next &= SIW_STAG_MAX_INDEX; if (xa_alloc_cyclic(&sdev->mem_xa, &id, m, limit, &next, GFP_KERNEL) < 0) @@ -81,7 +83,7 @@ int siw_mr_add_mem(struct siw_mr *mr, struct ib_pd *pd, void *mem_obj, { struct siw_device *sdev = to_siw_dev(pd->device); struct siw_mem *mem = kzalloc(sizeof(*mem), GFP_KERNEL); - struct xa_limit limit = XA_LIMIT(1, 0x00ffffff); + struct xa_limit limit = XA_LIMIT(1, SIW_STAG_MAX_INDEX); u32 id, next; if (!mem) @@ -97,7 +99,7 @@ int siw_mr_add_mem(struct siw_mr *mr, struct ib_pd *pd, void *mem_obj, kref_init(&mem->ref); get_random_bytes(&next, 4); - next &= 0x00ffffff; + next &= SIW_STAG_MAX_INDEX; if (xa_alloc_cyclic(&sdev->mem_xa, &id, mem, limit, &next, GFP_KERNEL) < 0) { |