app/testpmd: pack GRE header

Not packing this causes -Wcast-align breakage on machines that are
strict on alignment.  This patch fixes this bug.

Signed-off-by: Cyril Chemparathy <cchemparathy@ezchip.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 950ea82..4287940 100644 (file)
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -108,7 +108,7 @@ struct testpmd_offload_info {
 struct simple_gre_hdr {
        uint16_t flags;
        uint16_t proto;
-};
+} __attribute__((__packed__));
 
 static uint16_t
 get_psd_sum(void *l3_hdr, uint16_t ethertype, uint64_t ol_flags)