dpdk: fix build with GCC 11

Fixes:
 | In function 'memset',
 |     inlined from 'test_table_stub' at test_table_tables.c:151:4:
 | /buildarea/tmp/work/intel_x86_64-wrs-linux/dpdk/19.11.5-r0/recipe-sysroot/usr/include/bits/string_fortified.h:59:10: error: '__builtin_memset' offset [0, 31] is out of the bounds [0, 0] [-Werror=array-bounds]

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

2 files changed, 58 insertions, 1 deletions

diff --git a/recipes-extended/dpdk/dpdk/0001-test-table-fix-build-with-GCC-11.patch b/recipes-extended/dpdk/dpdk/0001-test-table-fix-build-with-GCC-11.patch
new file mode 100644
index 0000000..4f76290
--- /dev/null
+++ b/recipes-extended/dpdk/dpdk/0001-test-table-fix-build-with-GCC-11.patch
@@ -0,0 +1,56 @@
+From 33c12ac5ba5f09727c6de807e71403dd260a7bbc Mon Sep 17 00:00:00 2001
+From: Ferruh Yigit <ferruh.yigit@intel.com>
+Date: Mon, 17 May 2021 16:57:39 +0100
+Subject: [PATCH] test/table: fix build with GCC 11
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Build error:
+../app/test/test_table_tables.c: In function ‘test_table_stub’:
+../app/test/test_table_tables.c:31:9:
+        warning: ‘memset’ offset [0, 31] is out of the bounds [0, 0]
+        [-Warray-bounds]
+         memset((uint8_t *)mbuf + sizeof(struct rte_mbuf) + 32, 0, 32); \
+         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+../app/test/test_table_tables.c:151:25:
+        note: in expansion of macro ‘PREPARE_PACKET’
+  151 |                         PREPARE_PACKET(mbufs[i], 0xadadadad);
+      |                         ^~~~~~~~~~~~~~
+
+'key' points to mbuf header + 32 bytes, and memset clears next 32 bytes
+of 'key', so overall there needs to be 64 bytes after mbuf header.
+Adding a mbuf size check before memset.
+
+The original code has an assumption that mbuf data buffer follows mbuf
+header, this patch accepts same assumption.
+
+Bugzilla ID: 677
+Fixes: 5205954791cb ("app/test: packet framework unit tests")
+Cc: stable@dpdk.org
+
+Upstream-Status: Backport [https://github.com/DPDK/dpdk/commit/33c12ac5ba5f09727c6de807e71403dd260a7bbc]
+
+Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ app/test/test_table_tables.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/app/test/test_table_tables.c b/app/test/test_table_tables.c
+index 1aa269f95..4ff6ab16a 100644
+--- a/app/test/test_table_tables.c
++++ b/app/test/test_table_tables.c
+@@ -28,7 +28,8 @@ table_test table_tests[] = {
+                        APP_METADATA_OFFSET(0));                        \
+        key = RTE_MBUF_METADATA_UINT8_PTR(mbuf,                 \
+                        APP_METADATA_OFFSET(32));                       \
+-       memset(key, 0, 32);                                             \
++       if (mbuf->priv_size + mbuf->buf_len >= 64)                      \
++               memset(key, 0, 32);                                     \
+        k32 = (uint32_t *) key;                                         \
+        k32[0] = (value);                                               \
+        *signature = pipeline_test_hash(key, NULL, 0, 0);                       \
+-- 
+2.17.1
+
diff --git a/recipes-extended/dpdk/dpdk_19.11.5.bb b/recipes-extended/dpdk/dpdk_19.11.5.bb
index 8410c8a..2ae9b43 100644
--- a/recipes-extended/dpdk/dpdk_19.11.5.bb
+++ b/recipes-extended/dpdk/dpdk_19.11.5.bb
@@ -4,7 +4,8 @@ SRC_URI += " \
             file://dpdk-16.04-add-RTE_KERNELDIR_OUT-to-split-kernel-bu.patch \
             file://dpdk-16.07-add-sysroot-option-within-app-makefile.patch \
             file://0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch \
-            file://usertools-devbind-fix-binding-for-built-in-kernel-dr.patch"
+            file://usertools-devbind-fix-binding-for-built-in-kernel-dr.patch \
+            file://0001-test-table-fix-build-with-GCC-11.patch"
 
 
 STABLE = "-stable"