dpdk_19.11-20.12.bb: Fix build with gcc-12

Backport relevant fix from upstream dpdk

Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 50 insertions, 0 deletions

diff --git a/recipes-extended/dpdk/dpdk/0001-examples-fix-Arm-build-with-GCC-12.patch b/recipes-extended/dpdk/dpdk/0001-examples-fix-Arm-build-with-GCC-12.patch
new file mode 100644
index 00000000..b73b3a96
--- /dev/null
+++ b/recipes-extended/dpdk/dpdk/0001-examples-fix-Arm-build-with-GCC-12.patch
@@ -0,0 +1,49 @@
+From 229fc129be85a4d2d2c4efddae7bb97c3d87d416 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 13 Mar 2023 22:02:01 -0700
+Subject: [PATCH] examples: fix Arm build with GCC 12
+
+GCC-12 warns when a pointer of type union points to an array of same
+defined size, as union internally gets paded with pad bytes.
+
+    ../examples/common/neon/port_group.h:42:21: error: array subscript
+            'union <anonymous>[0]' is partly outside array bounds of
+            'uint16_t[5]' {aka 'short unsigned int[5]'}
+            [-Werror=array-bounds]
+       42 |                 pnum->u64 = gptbl[v].pnum;
+          |                     ^~
+    ../examples/common/neon/port_group.h:21:23: note: object 'pn' of
+            size [0, 10]
+       21 | port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, uint16x8_t dp1
+          |              ~~~~~~~~~^~~~~~~~~~~~~~~
+    ../examples/common/neon/port_group.h:43:21: error: array subscript
+            'union <anonymous>[0]' is partly outside array bounds of
+            'uint16_t[5]' {aka 'short unsigned int[5]'} [-Werror=array-bounds]
+       43 |                 pnum->u16[FWDSTEP] = 1;
+          |                     ^~
+
+Fixes: 732115ce38c6 ("examples/l3fwd: move packet group function in common")
+
+Upstream-Status: Backport [https://github.com/DPDK/dpdk/commit/b269bd630e96b276a69d698e13ad9ebfbbb67512]
+Signed-off-by: Amit Prakash Shukla <amitprakashs@marvell.com>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ examples/l3fwd/l3fwd_neon.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/examples/l3fwd/l3fwd_neon.h b/examples/l3fwd/l3fwd_neon.h
+index 86ac5971d7..dc73e9fef7 100644
+--- a/examples/l3fwd/l3fwd_neon.h
++++ b/examples/l3fwd/l3fwd_neon.h
+@@ -77,7 +77,7 @@ port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, uint16x8_t dp1,
+        union {
+                uint16_t u16[FWDSTEP + 1];
+                uint64_t u64;
+-       } *pnum = (void *)pn;
++       } __rte_packed *pnum = (void *)pn;
+ 
+        int32_t v;
+        uint16x8_t mask = {1, 2, 4, 8, 0, 0, 0, 0};
+-- 
+2.39.2
+
diff --git a/recipes-extended/dpdk/dpdk_19.11-20.12.bb b/recipes-extended/dpdk/dpdk_19.11-20.12.bb
index e974eba0..b14d4fbf 100644
--- a/recipes-extended/dpdk/dpdk_19.11-20.12.bb
+++ b/recipes-extended/dpdk/dpdk_19.11-20.12.bb
@@ -8,6 +8,7 @@ SRC_URI = "git://github.com/nxp-qoriq/dpdk;protocol=https;nobranch=1 \
            file://0001-add-Wno-cast-function-type.patch \
            file://0001-Add-RTE_KERNELDIR_OUT.patch \
            file://0005-use-python3-instead-of-python.patch \
+           file://0001-examples-fix-Arm-build-with-GCC-12.patch \
 "
 SRCREV = "7071c27f6f5aefb57de1cffab3484707b1e82e2b"