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WIP: Test GMM Attach 

Change-Id: Iceb6e7e27e4e27ea452d8a422870e2729c9e2297
pespin/test-attach
Pau Espin 2023-01-23 18:43:52 +01:00
parent 0f06148896
commit 0fbfeaa153
2 changed files with 65 additions and 1 deletions
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52
src/host/layer23/src/modem/app_modem.c
View File

@ -38,6 +38,8 @@
#include <osmocom/gsm/gsm48_ie.h>
#include <osmocom/gsm/gsm48.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gprs/llc/llc.h>
#include <osmocom/gprs/llc/llc_prim.h>
#include <osmocom/gprs/rlcmac/csn1_defs.h>
#include <osmocom/gprs/rlcmac/rlcmac_prim.h>
@ -274,6 +276,54 @@ static int modem_rx_bcch(struct osmocom_ms *ms, struct msgb *msg)
};
}
/*
GSM A-I/F DTAP - Attach Request
Protocol Discriminator: GPRS mobility management messages (8)
DTAP GPRS Mobility Management Message Type: Attach Request (0x01)
MS Network Capability
Length: 2
1... .... = GEA/1: Encryption algorithm available
.1.. .... = SM capabilities via dedicated channels: Mobile station supports mobile terminated point to point SMS via dedicated signalling channels
..1. .... = SM capabilities via GPRS channels: Mobile station supports mobile terminated point to point SMS via GPRS packet data channels
...0 .... = UCS2 support: The ME has a preference for the default alphabet (defined in 3GPP TS 23.038 [8b]) over UCS2
.... 01.. = SS Screening Indicator: capability of handling of ellipsis notation and phase 2 error handling (0x1)
.... ..0. = SoLSA Capability: The ME does not support SoLSA
.... ...1 = Revision level indicator: Used by a mobile station supporting R99 or later versions of the protocol
1... .... = PFC feature mode: Mobile station does support BSS packet flow procedures
.110 000. = Extended GEA bits: 0x30
.... ...0 = LCS VA capability: LCS value added location request notification capability not supported
Attach Type
Ciphering Key Sequence Number
DRX Parameter
Mobile Identity - TMSI/P-TMSI (0xf43cec71)
Routing Area Identification - Old routing area identification - RAI: 234-70-5-0
MS Radio Access Capability
GPRS Timer - Ready Timer
Element ID: 0x17
GPRS Timer: 10 sec
000. .... = Unit: value is incremented in multiples of 2 seconds (0)
...0 0101 = Timer value: 5
*/
static uint8_t pdu_gmmm_attach_req[] = {
0x08, 0x01, 0x02, 0xe5, 0xe0, 0x01, 0x0a, 0x00, 0x05, 0xf4, 0xf4, 0x3c, 0xec, 0x71, 0x32, 0xf4,
0x07, 0x00, 0x05, 0x00, 0x17, 0x19, 0x33, 0x43, 0x2b, 0x37, 0x15, 0x9e, 0xf9, 0x88, 0x79, 0xcb,
0xa2, 0x8c, 0x66, 0x21, 0xe7, 0x26, 0x88, 0xb1, 0x98, 0x87, 0x9c, 0x00, 0x17, 0x05
};
static int modem_tx_gmm_attach_req(struct osmocom_ms *ms)
{
struct osmo_gprs_llc_prim *llc_prim;
uint32_t tlli = 0xe1c5d364;
int rc;
llc_prim = osmo_gprs_llc_prim_alloc_ll_unitdata_req(tlli, OSMO_GPRS_LLC_SAPI_GMM,
pdu_gmmm_attach_req, sizeof(pdu_gmmm_attach_req));
rc = osmo_gprs_llc_prim_upper_down(llc_prim);
return rc;
}
static int modem_rx_imm_ass(struct osmocom_ms *ms, struct msgb *msg)
{
const struct gsm48_imm_ass *ia = msgb_l3(msg);
@ -282,6 +332,8 @@ static int modem_rx_imm_ass(struct osmocom_ms *ms, struct msgb *msg)
int rc;
struct osmo_gprs_rlcmac_prim *rlcmac_prim;
modem_tx_gmm_attach_req(ms);
/* Discard CS channel assignment */
if ((ia->page_mode >> 4) == 0)
return 0;

14
src/host/layer23/src/modem/rlcmac.c
View File

@ -115,7 +115,19 @@ static int modem_rlcmac_prim_down_cb(struct osmo_gprs_rlcmac_prim *rlcmac_prim,
const char *pdu_name = osmo_gprs_rlcmac_prim_name(rlcmac_prim);
int rc = 0;
switch (rlcmac_prim->oph.sap) {
switch (OSMO_PRIM_HDR(&rlcmac_prim->oph)) {
case OSMO_PRIM(OSMO_GPRS_RLCMAC_L1CTL_RACH, PRIM_OP_REQUEST):
LOGP(DRLCMAC, LOGL_DEBUG, "%s(): Rx %s: TODO: forward to l1 socket\n", __func__, pdu_name);
break;
case OSMO_PRIM(OSMO_GPRS_RLCMAC_L1CTL_PDCH_DATA, PRIM_OP_REQUEST):
LOGP(DRLCMAC, LOGL_DEBUG, "%s(): Rx %s: TODO: forward to l1 socket\n", __func__, pdu_name);
break;
case OSMO_PRIM(OSMO_GPRS_RLCMAC_L1CTL_CFG_UL_TBF, PRIM_OP_REQUEST):
LOGP(DRLCMAC, LOGL_DEBUG, "%s(): Rx %s: TODO: forward to l1 socket\n", __func__, pdu_name);
break;
case OSMO_PRIM(OSMO_GPRS_RLCMAC_L1CTL_CFG_DL_TBF, PRIM_OP_REQUEST):
LOGP(DRLCMAC, LOGL_DEBUG, "%s(): Rx %s: TODO: forward to l1 socket\n", __func__, pdu_name);
break;
default:
LOGP(DRLCMAC, LOGL_DEBUG, "%s(): Unexpected Rx %s\n", __func__, pdu_name);
OSMO_ASSERT(0);