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From: Dengdui Huang <huangdengdui@huawei.com>
To: <dev@dpdk.org>
CC: <jasvinder.singh@intel.com>, <stephen@networkplumber.org>,
<thomas@monjalon.net>, <mb@smartsharesystems.com>, <lihuisong@huawei.com>,
<fengchengwen@huawei.com>, <haijie1@huawei.com>, <liuyonglong@huawei.com>
Subject: [PATCH] net: fix GTP packet parsing
Date: Fri, 11 Apr 2025 16:43:03 +0800
Message-ID: <20250411084303.770040-1-huangdengdui@huawei.com>
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After parsing the GTP packet header, the next protocol type should
be converted from RTE_GTP_TYPE_IPV4/IPV6 to RTE_ETHER_TYPE_IPV4/IPV6.
Otherwise, the next protocol cannot be parsed.
Fixes: 64ed7f854cf4 ("net: add tunnel packet type parsing")
Cc: stable@dpdk.org
Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
---
lib/net/rte_net.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/lib/net/rte_net.c b/lib/net/rte_net.c
index be24690fdf..1771588a09 100644
--- a/lib/net/rte_net.c
+++ b/lib/net/rte_net.c
@@ -231,7 +231,13 @@ ptype_tunnel_with_udp(uint16_t *proto, const struct rte_mbuf *m,
*/
if (gh->msg_type == 0xff) {
ip_ver = *(const uint8_t *)((const char *)gh + gtp_len);
- *proto = (ip_ver) & 0xf0;
+ ip_ver = (ip_ver) & 0xf0;
+ if (ip_ver == RTE_GTP_TYPE_IPV4)
+ *proto = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
+ else if (ip_ver == RTE_GTP_TYPE_IPV6)
+ *proto = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6);
+ else
+ *proto = 0;
} else {
*proto = 0;
}
--
2.33.0