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Diffstat (limited to 'drivers/net/ethernet/mellanox')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_tc.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 542354b5eb4d..4722ac70f0a9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1916,6 +1916,19 @@ struct mlx5_fields {
offsetof(struct pedit_headers, field) + (off), \
MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
+/* masked values are the same and there are no rewrites that do not have a
+ * match.
+ */
+#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
+ type matchmaskx = *(type *)(matchmaskp); \
+ type matchvalx = *(type *)(matchvalp); \
+ type maskx = *(type *)(maskp); \
+ type valx = *(type *)(valp); \
+ \
+ (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
+ matchmaskx)); \
+})
+
static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
void *matchmaskp, int size)
{
@@ -1923,16 +1936,13 @@ static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
switch (size) {
case sizeof(u8):
- same = ((*(u8 *)valp) & (*(u8 *)maskp)) ==
- ((*(u8 *)matchvalp) & (*(u8 *)matchmaskp));
+ same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
break;
case sizeof(u16):
- same = ((*(u16 *)valp) & (*(u16 *)maskp)) ==
- ((*(u16 *)matchvalp) & (*(u16 *)matchmaskp));
+ same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
break;
case sizeof(u32):
- same = ((*(u32 *)valp) & (*(u32 *)maskp)) ==
- ((*(u32 *)matchvalp) & (*(u32 *)matchmaskp));
+ same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
break;
}