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Merge remote-tracking branch 'origin/improve-gtpu-error-handling' into integration_2025_w33 (!3584)

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add gtpu error packet parsing and display
This commit is contained in:
Robert Schmidt
2025-08-13 18:36:19 +02:00
parent 569cbe24fa efccad956a
commit ebb544601c
1 changed files with 23 additions and 1 deletions
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openair3/ocp-gtpu/gtp_itf.cpp
+23 -1
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@@ -77,6 +77,14 @@ typedef struct Gtpv1uExtHeader {
uint8_t NextExtHeaderType;
} __attribute__((packed)) Gtpv1uExtHeaderT;
typedef struct Gtpv1Error {
Gtpv1uMsgHeaderT h;
uint8_t teid_data_i;
teid_t teid;
uint8_t addr_data_i;
uint16_t addr_len;
} __attribute__((packed)) Gtpv1uError;
#pragma pack()
// TS 29.281, fig 5.2.1-3
@@ -949,7 +957,21 @@ static int Gtpv1uHandleEchoReq(int h, uint8_t *msgBuf, uint32_t msgBufLen, const
static int Gtpv1uHandleError(int h, uint8_t *msgBuf, uint32_t msgBufLen, const struct sockaddr_in *addr)
{
LOG_E(GTPU, "Received GTP error indication (error handling is missing/not implemented)\n");
if (msgBufLen < sizeof(Gtpv1uError))
LOG_E(GTPU, "Received GTP error indication with truncated size %u (mini size: %lu)\n", msgBufLen,sizeof(Gtpv1uError)+4);
Gtpv1uError *msg = ( Gtpv1uError *)msgBuf;
LOG_E(GTPU, "Received GTP error indication: \n"
" TEID %u (must be 0 from TS 29.281)\n"
" TV id for TEID %u (must be 16)\n"
" TEID in error %u (should be a TEID we sent)\n"
" TV id for GTP addr %u (should be 133)\n"
" len for addr of UPF %u (should be IPv4 or IPv6 len)"
" (TS 29.281 Sec 7.3.1 Error Handling not implemented)\n",
msg->h.teid,
msg->teid_data_i,
msg->teid,
msg->addr_data_i,
msg->addr_len);
int rc = GTPNOK;
return rc;
}