[PATCH 3/3] examples/ipsec-secgw: compilation fix for GCC-12

[Amit Prakash Shukla]

GCC 12 raises the following warning:

meson --werror --buildtype=debugoptimized --cross-file
	config/arm/arm64_armv8_linux_gcc -Ddefault_library=shared
	-Dexamples=all build
ninja -C build

In file included from ../examples/ipsec-secgw/ipsec_lpm_neon.h:9,
                 from ../examples/ipsec-secgw/ipsec_worker.c:16:
In function 'send_multi_pkts',
    inlined from 'route6_pkts_neon' at
../examples/ipsec-secgw/ipsec_lpm_neon.h:170:2,
    inlined from 'ipsec_poll_mode_wrkr_inl_pr' at
../examples/ipsec-secgw/ipsec_worker.c:1257:4:
../examples/ipsec-secgw/ipsec_neon.h:261:21: error: 'dst_port' may be used
uninitialized [-Werror=maybe-uninitialized]
  261 |                 dlp = dst_port[i - 1];
      |                 ~~~~^~~~~~~~~~~~~~~~~
In file included from ../examples/ipsec-secgw/ipsec_worker.c:16:
../examples/ipsec-secgw/ipsec_worker.c: In function
'ipsec_poll_mode_wrkr_inl_pr':
../examples/ipsec-secgw/ipsec_lpm_neon.h:118:17:
	note: 'dst_port' declared here
  118 |         int32_t dst_port[MAX_PKT_BURST];
      |                 ^~~~~~~~

Fixes: ce23f7ceec6b (examples/ipsec-secgw: add support of NEON with poll mode)
Cc: stable at dpdk.org

Signed-off-by: Amit Prakash Shukla <amitprakashs at marvell.com>
---
 examples/ipsec-secgw/ipsec_lpm_neon.h | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/examples/ipsec-secgw/ipsec_lpm_neon.h b/examples/ipsec-secgw/ipsec_lpm_neon.h
index 959a5a8666..25f0abcaf3 100644
--- a/examples/ipsec-secgw/ipsec_lpm_neon.h
+++ b/examples/ipsec-secgw/ipsec_lpm_neon.h
@@ -115,7 +115,7 @@ static inline void
 route6_pkts_neon(struct rt_ctx *rt_ctx, struct rte_mbuf **pkts, int nb_rx)
 {
 	uint8_t dst_ip6[MAX_PKT_BURST][16];
-	int32_t dst_port[MAX_PKT_BURST];
+	uint16_t dst_port[MAX_PKT_BURST];
 	struct rte_ether_hdr *eth_hdr;
 	struct rte_ipv6_hdr *ipv6_hdr;
 	int32_t hop[MAX_PKT_BURST];
@@ -157,17 +157,15 @@ route6_pkts_neon(struct rt_ctx *rt_ctx, struct rte_mbuf **pkts, int nb_rx)
 		pkt = pkts[i];
 		if (pkt->ol_flags & RTE_MBUF_F_TX_SEC_OFFLOAD) {
 			/* Read hop from the SA */
-			dst_port[i] = get_hop_for_offload_pkt(pkt, 1);
+			dst_port[i] = (uint16_t)get_hop_for_offload_pkt(pkt, 1);
 		} else {
 			/* Need to use hop returned by lookup */
-			dst_port[i] = hop[lpm_pkts++];
+			dst_port[i] = (uint16_t)hop[lpm_pkts++];
 		}
-		if (dst_port[i] == -1)
-			dst_port[i] = BAD_PORT;
 	}
 
 	/* Send packets */
-	send_multi_pkts(pkts, (uint16_t *)dst_port, nb_rx, 0, 0, false);
+	send_multi_pkts(pkts, dst_port, nb_rx, 0, 0, false);
 }
 
 /*
-- 
2.25.1