patches for DPDK stable branches
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From: Eli Britstein <elibr@nvidia.com>
To: <dev@dpdk.org>
Cc: Ilya Maximets <i.maximets@ovn.org>,
	Gaetan Rivet <gaetanr@nvidia.com>, Majd Dibbiny <majd@nvidia.com>,
	Asaf Penso <asafp@nvidia.com>,
	"Thomas Monjalon" <thomas@monjalon.net>,
	Harry Van Haaren <harry.van.haaren@intel.com>, <stable@dpdk.org>
Subject: [dpdk-stable] [PATCH 1/3] net: avoid cast-align warning in VLAN insert function
Date: Tue, 13 Jul 2021 09:49:08 +0300	[thread overview]
Message-ID: <20210713064910.12793-2-elibr@nvidia.com> (raw)
In-Reply-To: <20210713064910.12793-1-elibr@nvidia.com>

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 gcc flags '-Werror -Wcast-align':

In file included from .../include/rte_ethdev.h:165,
                 from lib/netdev-dpdk.c:33:
.../include/rte_ether.h: In function 'rte_vlan_insert':
.../include/rte_ether.h:375:7: error: cast increases required alignment
    of target type [-Werror=cast-align]
  375 |  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: stable@dpdk.org

Signed-off-by: Eli Britstein <elibr@nvidia.com>
---
 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 7ee5e9a292..6e21155161 100644
--- a/lib/net/rte_ether.h
+++ b/lib/net/rte_ether.h
@@ -372,7 +372,7 @@ 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


       reply	other threads:[~2021-07-13  6:49 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210713064910.12793-1-elibr@nvidia.com>
2021-07-13  6:49 ` Eli Britstein [this message]
2021-07-30 10:57   ` [dpdk-stable] [dpdk-dev] " Olivier Matz
2021-07-13  6:49 ` [dpdk-stable] [PATCH 2/3] mbuf: avoid cast-align warning in pktmbuf mtod offset macro Eli Britstein
2021-07-13  7:43   ` Thomas Monjalon
2021-07-28 15:28   ` [dpdk-stable] [dpdk-dev] " Olivier Matz
2021-07-29  7:13     ` Eli Britstein
2021-07-30 11:10       ` Olivier Matz
2021-08-01  8:06         ` Eli Britstein
2021-10-19  6:41           ` Eli Britstein
2021-10-19  9:47             ` Olivier Matz
2021-07-13  6:49 ` [dpdk-stable] [PATCH 3/3] eal/x86: avoid cast-align warning in x86 memcpy functions Eli Britstein
2021-10-21  8:51 ` [dpdk-stable] [PATCH V2 1/3] net: avoid cast-align warning in VLAN insert function Eli Britstein
2021-10-21  8:51   ` [dpdk-stable] [PATCH V2 2/3] mbuf: avoid cast-align warning in pktmbuf mtod offset macro Eli Britstein
2021-10-21  8:51   ` [dpdk-stable] [PATCH V2 3/3] eal/x86: avoid cast-align warning in x86 memcpy functions Eli Britstein
2021-10-25 15:29     ` Thomas Monjalon
2021-10-21 15:48   ` [dpdk-stable] [dpdk-dev] [PATCH V2 1/3] net: avoid cast-align warning in VLAN insert function Stephen Hemminger
2021-10-21 16:16     ` Eli Britstein
2021-10-21 16:22       ` Stephen Hemminger

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