[dpdk-dev] [PATCH] net/mlx5: fix compilation issue on ARM SOC

[Shahaf Shuler <shahafs@mellanox.com>]

On some ARM environment, the below compilation error will be seen

dpdk/drivers/net/mlx5/mlx5_flow_dv.c: In function
'flow_dv_translate_item_nvgre':
/tmp/dpdk/drivers/net/mlx5/mlx5_flow_dv.c:785:22: error: pointer targets
in initialization differ in signedness [-Werror=pointer-sign]
  const char *tni_v = nvgre_v->tni;

The reason for this error is that nvgre_v->tni is defined as byte array
in size of 3B. However the code in the function iterate till the 4B in
order to copy/set also the subsequent field after it (flow_id)

Fixing by pointing to this struct from a different pointer.

Fixes: fc2c498ccb94 ("net/mlx5: add Direct Verbs translate items")
Cc: orika@mellanox.com
Cc: xuemingl@mellanox.com

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index a013201eab..05df8d51a4 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -780,6 +780,7 @@ flow_dv_translate_item_nvgre(void *matcher, void *key,
 	const struct rte_flow_item_nvgre *nvgre_v = item->spec;
 	void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
 	void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
+	const char *tni_v = (const char *)&nvgre_v->tni;
 	char *gre_key_m;
 	char *gre_key_v;
 	int size;
@@ -794,7 +795,7 @@ flow_dv_translate_item_nvgre(void *matcher, void *key,
 	gre_key_v = MLX5_ADDR_OF(fte_match_set_misc, misc_v, gre_key_h);
 	memcpy(gre_key_m, nvgre_m->tni, size);
 	for (i = 0; i < size; ++i)
-		gre_key_v[i] = gre_key_m[i] & ((const char *)(nvgre_v->tni))[i];
+		gre_key_v[i] = gre_key_m[i] & tni_v[i];
 	flow_dv_translate_item_gre(matcher, key, item, inner);
 }
 
-- 
2.12.0