From d00af3a2acb2e5ae6ae26eb2384b0e70bfa13a51 Mon Sep 17 00:00:00 2001 From: luwenpeng Date: Tue, 19 Mar 2024 17:36:46 +0800 Subject: [PATCH] bugfix: TSG-19996 parse the packet as GTP-U when source port or dest port is 2152. --- common/src/packet.cpp | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/common/src/packet.cpp b/common/src/packet.cpp index d93543e..af757c8 100644 --- a/common/src/packet.cpp +++ b/common/src/packet.cpp @@ -863,17 +863,19 @@ static inline const char *parse_udp(struct packet *handler, const char *data, ui struct udphdr *hdr = (struct udphdr *)data; SET_LAYER(handler, layer, LAYER_TYPE_UDP, sizeof(struct udphdr), data, len); - switch (ntohs(hdr->uh_dport)) + // VXLAN_DPORT 4789 + if (ntohs(hdr->uh_dport) == 4789) { - // VXLAN_DPORT - case 4789: return parse_vxlan(handler, layer->pld_ptr, layer->pld_len); - // GTP1U_PORT - case 2152: - return parse_gtpv1_u(handler, layer->pld_ptr, layer->pld_len); - default: - return layer->pld_ptr; } + + // GTP1U_PORT 2152 + if (ntohs(hdr->uh_dport) == 2152 || ntohs(hdr->uh_sport) == 2152) + { + return parse_gtpv1_u(handler, layer->pld_ptr, layer->pld_len); + } + + return layer->pld_ptr; } static inline const char *parse_tcp(struct packet *handler, const char *data, uint16_t len)