diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2017-11-05 13:36:18 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-11-11 13:33:20 +0000 |
| commit | 6ddcce5b29278618ae2fb08058e48568aba0cd19 (patch) | |
| tree | 031baac64fede10936e2bbabf3b72610f01beaf3 /include | |
| parent | 9301343bc8d20d23c951dad6495b334ea797b5be (diff) | |
dst: Increase alignment of metrics to allow extra flag on pointers
For the backport of "ipv4: add reference counting to metrics", we will
need a third flag on metrics pointers. This was not needed upstream
as the DST_METRICS_FORCE_OVERWRITE flag has been eliminated there.
In order to use three flag bits we need to increase the alignment of
metrics from 4 to 8 bytes.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/dst.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/net/dst.h b/include/net/dst.h index 0fb99a26e973..f285de9d567a 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -105,12 +105,15 @@ struct dst_entry { }; }; +void *dst_alloc_metrics(gfp_t flags); +void dst_free_metrics(void *metrics); u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old); extern const u32 dst_default_metrics[]; #define DST_METRICS_READ_ONLY 0x1UL #define DST_METRICS_FORCE_OVERWRITE 0x2UL -#define DST_METRICS_FLAGS 0x3UL +#define DST_METRICS_FLAGS 0x7UL +#define DST_METRICS_ALIGNMENT 0x8UL #define __DST_METRICS_PTR(Y) \ ((u32 *)((Y) & ~DST_METRICS_FLAGS)) #define DST_METRICS_PTR(X) __DST_METRICS_PTR((X)->_metrics) |