In ipsec-secgw wrong SPI number is read from incoming ESP packet.
The problem exist inside function inbound_sa_lookup().
The SPI is read from mbuf where the information is stored in big-endian.
In low-endian environment the value is erroneous.
Fixed by add conversion rte_be_to_cpu_32().

Fixes: d299106e8e31 ("examples/ipsec-secgw: add IPsec sample application")

Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz at intel.com>
---
 examples/ipsec-secgw/sa.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index b6260ed..503e345 100644
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -416,8 +416,8 @@ inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf 
*pkts[],
        uint32_t *src, spi;

        for (i = 0; i < nb_pkts; i++) {
-               spi = rte_pktmbuf_mtod_offset(pkts[i], struct esp_hdr *,
-                               sizeof(struct ip))->spi;
+               spi = rte_be_to_cpu_32(rte_pktmbuf_mtod_offset(pkts[i],
+                               struct esp_hdr *, sizeof(struct ip))->spi);

                if (spi == INVALID_SPI)
                        continue;
-- 
1.9.1

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