In rte_vlan_insert there is a casting of rte_pktmbuf_prepend returned
value to (struct rte_ether_hdr *), which causes cast-align warning when
using strict cast align flag with supporting gcc:
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
CFLAGS="-Wcast-align=strict" make V=1 -C examples/l2fwd clean static
In file included from main.c:35:
/dpdk/build/include/rte_ether.h:370:7: warning: cast increases required
alignment of target type [-Wcast-align]
370 | nh = (struct rte_ether_hdr *)
| ^
As the code assumes correct alignment, add first a (void *) casting, to
avoid the warning.
Fixes: c974021a5949 ("ether: add soft vlan encap/decap")
Cc: [email protected]
Signed-off-by: Eli Britstein <[email protected]>
Acked-by: Olivier Matz <[email protected]>
---
lib/net/rte_ether.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/net/rte_ether.h b/lib/net/rte_ether.h
index b83e0d3fce..9febb60300 100644
--- a/lib/net/rte_ether.h
+++ b/lib/net/rte_ether.h
@@ -367,7 +367,7 @@ static inline int rte_vlan_insert(struct rte_mbuf **m)
return -EINVAL;
oh = rte_pktmbuf_mtod(*m, struct rte_ether_hdr *);
- nh = (struct rte_ether_hdr *)
+ nh = (struct rte_ether_hdr *)(void *)
rte_pktmbuf_prepend(*m, sizeof(struct rte_vlan_hdr));
if (nh == NULL)
return -ENOSPC;
--
2.28.0.2311.g225365fb51
