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From: George Prekas <prekageo@amazon.com>
To: Wenzhuo Lu <wenzhuo.lu@intel.com>,
	Beilei Xing <beilei.xing@intel.com>,
	Bernard Iremonger <bernard.iremonger@intel.com>
Cc: <dev@dpdk.org>, Stephen Hemminger <stephen@networkplumber.org>,
	"Ferruh Yigit" <ferruh.yigit@intel.com>,
	George Prekas <prekageo@amazon.com>
Subject: [dpdk-dev] [PATCH v2] app/testpmd: fix IP checksum calculation
Date: Fri, 4 Dec 2020 23:42:38 -0600	[thread overview]
Message-ID: <20201205054238.12469-1-prekageo@amazon.com> (raw)
In-Reply-To: <20201203135954.1127-1-prekageo@amazon.com>

Strict-aliasing rules are violated by cast to uint16_t* in flowgen.c
and the calculated IP checksum is wrong on GCC 9 and GCC 10.

Signed-off-by: George Prekas <prekageo@amazon.com>
---
v2:
* Instead of a compiler barrier, use a compiler flag.
---
 app/test-pmd/meson.build | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/test-pmd/meson.build b/app/test-pmd/meson.build
index 7e9c7bdd6..5d24e807f 100644
--- a/app/test-pmd/meson.build
+++ b/app/test-pmd/meson.build
@@ -4,6 +4,7 @@
 # override default name to drop the hyphen
 name = 'testpmd'
 cflags += '-Wno-deprecated-declarations'
+cflags += '-fno-strict-aliasing'
 sources = files('5tswap.c',
 	'cmdline.c',
 	'cmdline_flow.c',
-- 
2.17.1


  parent reply	other threads:[~2020-12-05  5:43 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-03 13:59 [dpdk-dev] [PATCH] app/testpmd: fix IP checksum calculation George Prekas
2020-12-03 16:08 ` Stephen Hemminger
2020-12-03 16:35   ` George Prekas
2020-12-03 18:33     ` Stephen Hemminger
2020-12-04  8:59 ` Ferruh Yigit
2020-12-05  5:47   ` George Prekas
2020-12-05  5:42 ` George Prekas [this message]
2021-01-05 16:26   ` [dpdk-dev] [PATCH v2] " George Prekas
2021-01-06 18:02   ` Ferruh Yigit
2021-01-07  5:25     ` Stephen Hemminger
2021-01-07  5:39     ` George Prekas
2021-01-07 11:32       ` Ferruh Yigit
2021-01-07 13:06         ` Ferruh Yigit
2021-01-07 14:20         ` George Prekas
2021-01-07 15:22           ` Ferruh Yigit
2021-01-07 20:45             ` George Prekas
2021-01-07 15:50       ` Stephen Hemminger
2021-01-07 15:59         ` Ferruh Yigit
2021-01-07 16:29           ` Stephen Hemminger
2021-01-07 20:42   ` [dpdk-dev] [PATCH v3] " George Prekas
2021-01-18 15:20     ` Ferruh Yigit

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