22 Feb
2016
22 Feb
'16
11:58 a.m.
From: Max <msuraev(a)sysmocom.de>
Signed-off-by: Max <msuraev(a)sysmocom.de>
---
.gitignore | 1 +
1 file changed, 1 insertion(+)
diff --git a/.gitignore b/.gitignore
index 6cc9aa5..a22fd4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
Makefile.in
Makefile
.deps
+src/cscope*
aclocal.m4
autom4te.cache
--
2.7.1
22 Feb
22 Feb
11:58 a.m.
New subject: [PATCH 2/3] Introduce --gsmtap-ip/-i option
From: Max <msuraev(a)sysmocom.de>
This option allows user to use custom IP address instead of default
"localhost".
Correspondingly gsmtap init moved from sysmoBTS-specific code up to "bts"
struct
level. This way it can be easier reused by other implementations. The
lack of regressions was verified by checking following command on
sysmoBTS: "./osmo-pcu -c osmo-pcu.cfg -r 1 -i 192.168.10.1" where
192.168.10.1 is the host which was running wireshark and netcat:
"nc -u -l 192.168.10.1 -p 4729" to accept gsmtap flow.
---
src/bts.h | 2 ++
src/pcu_l1_if.cpp | 5 +++--
src/pcu_main.cpp | 17 ++++++++++++++++-
src/sysmo_l1_if.c | 6 ++----
4 files changed, 23 insertions(+), 7 deletions(-)
diff --git a/src/bts.h b/src/bts.h
index 119f6b2..c975304 100644
--- a/src/bts.h
+++ b/src/bts.h
@@ -27,6 +27,7 @@ extern "C" {
#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/stat_item.h>
#include <osmocom/core/timer.h>
+#include <osmocom/core/gsmtap.h>
}
#include "poll_controller.h"
@@ -172,6 +173,7 @@ struct gprs_rlcmac_bts {
uint8_t n3101;
uint8_t n3103;
uint8_t n3105;
+ struct gsmtap_inst *gsmtap;
struct gprs_rlcmac_trx trx[8];
int (*alloc_algorithm)(struct gprs_rlcmac_bts *bts,
struct GprsMs *ms,
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index 9d7dbee..e816e6f 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -42,7 +42,7 @@ extern "C" {
// FIXME: move this, when changed from c++ to c.
extern "C" {
-void *l1if_open_pdch(void *priv, uint32_t hlayer1);
+void *l1if_open_pdch(void *priv, uint32_t hlayer1, struct gsmtap_inst *gsmtap);
int l1if_connect_pdch(void *obj, uint8_t ts);
int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn,
uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len);
@@ -436,7 +436,8 @@ bssgp_failed:
if (!bts->trx[trx].fl1h)
bts->trx[trx].fl1h = l1if_open_pdch(
(void *)trx,
- info_ind->trx[trx].hlayer1);
+ info_ind->trx[trx].hlayer1,
+ bts->gsmtap);
if (!bts->trx[trx].fl1h) {
LOGP(DL1IF, LOGL_FATAL, "Failed to open direct "
"DSP access for PDCH.\n");
diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp
index 8eb7441..4126d06 100644
--- a/src/pcu_main.cpp
+++ b/src/pcu_main.cpp
@@ -33,6 +33,8 @@ extern "C" {
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/core/stats.h>
+#include <osmocom/core/gsmtap.h>
+#include <osmocom/core/gsmtap_util.h>
}
extern struct gprs_nsvc *nsvc;
@@ -44,6 +46,7 @@ void *tall_pcu_ctx;
extern void *bv_tall_ctx;
static int quit = 0;
static int rt_prio = -1;
+static char *gsmtap_addr = "localhost"; // FIXME: use gengetopt's default
value instead
static void print_help()
{
@@ -58,6 +61,7 @@ static void print_help()
" -V --version print version\n"
" -r --realtime PRIO Use SCHED_RR with the specified "
"priority\n"
+ " -i --gsmtap-ip The destination IP used for GSMTAP.\n"
);
}
@@ -74,10 +78,11 @@ static void handle_options(int argc, char **argv)
{ "version", 0, 0, 'V' },
{ "realtime", 1, 0, 'r' },
{ "exit", 0, 0, 'e' },
+ { "gsmtap-ip", 1, 0, 'i' },
{ 0, 0, 0, 0 }
};
- c = getopt_long(argc, argv, "hc:m:n:Vr:e",
+ c = getopt_long(argc, argv, "hc:m:n:Vr:e:i:",
long_options, &option_idx);
if (c == -1)
break;
@@ -102,6 +107,9 @@ static void handle_options(int argc, char **argv)
print_version(1);
exit(0);
break;
+ case 'i':
+ gsmtap_addr = optarg;
+ break;
case 'r':
rt_prio = atoi(optarg);
break;
@@ -219,6 +227,13 @@ int main(int argc, char *argv[])
exit(0);
}
+ bts->gsmtap = gsmtap_source_init(gsmtap_addr, GSMTAP_UDP_PORT, 1);
+
+ if (bts->gsmtap)
+ gsmtap_source_add_sink(bts->gsmtap);
+ else
+ fprintf(stderr, "Failed to initialize GSMTAP for %s\n", gsmtap_addr);
+
rc = vty_read_config_file(config_file, NULL);
if (rc < 0 && config_given) {
fprintf(stderr, "Failed to parse the config file: '%s'\n",
diff --git a/src/sysmo_l1_if.c b/src/sysmo_l1_if.c
index 8572786..c7c54dd 100644
--- a/src/sysmo_l1_if.c
+++ b/src/sysmo_l1_if.c
@@ -357,7 +357,7 @@ int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn,
return 0;
}
-void *l1if_open_pdch(void *priv, uint32_t hlayer1)
+void *l1if_open_pdch(void *priv, uint32_t hlayer1, struct gsmtap_inst *gsmtap)
{
struct femtol1_hdl *fl1h;
int rc;
@@ -378,9 +378,7 @@ void *l1if_open_pdch(void *priv, uint32_t hlayer1)
return NULL;
}
- fl1h->gsmtap = gsmtap_source_init("localhost", GSMTAP_UDP_PORT, 1);
- if (fl1h->gsmtap)
- gsmtap_source_add_sink(fl1h->gsmtap);
+ fl1h->gsmtap = gsmtap;
return fl1h;
}
--
2.7.1
11:58 a.m.
New subject: [PATCH 3/3] Add gsmtap support to generic bts
From: Max <msuraev(a)sysmocom.de>
Instrument TX and RX functions dealing with regular BTS (without direct
DSP access) to use GSMTAP. Previously only DSP-related functions were
instrumented.
---
src/pcu_l1_if.cpp | 36 ++++++++++++++++++++++++++----------
1 file changed, 26 insertions(+), 10 deletions(-)
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index e816e6f..1b727a5 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -30,6 +30,8 @@ extern "C" {
#include <osmocom/core/talloc.h>
#include <osmocom/core/select.h>
#include <osmocom/core/msgb.h>
+#include <osmocom/core/gsmtap_util.h>
+#include <osmocom/core/gsmtap.h>
}
#include <gprs_rlcmac.h>
@@ -93,7 +95,7 @@ static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate)
static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi,
uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data,
- uint8_t len)
+ uint8_t len, struct gsmtap_inst *gsmtap)
{
struct msgb *msg;
struct gsm_pcu_if *pcu_prim;
@@ -118,54 +120,58 @@ static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi,
memcpy(data_req->data, data, len);
data_req->len = len;
+ gsmtap_send(gsmtap, arfcn, ts, GSMTAP_CHANNEL_PACCH, 0, fn, 0, 0, data, len);
+
return pcu_sock_send(msg);
}
void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn,
uint32_t fn, uint8_t block_nr)
{
-#ifdef ENABLE_SYSMODSP
struct gprs_rlcmac_bts *bts = bts_main_data();
+#ifdef ENABLE_SYSMODSP
if (bts->trx[trx].fl1h)
l1if_pdch_req(bts->trx[trx].fl1h, ts, 0, fn, arfcn, block_nr,
msg->data, msg->len);
else
#endif
pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr,
- msg->data, msg->len);
+ msg->data, msg->len, bts->gsmtap);
msgb_free(msg);
}
void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn,
uint32_t fn, uint8_t block_nr)
{
-#ifdef ENABLE_SYSMODSP
struct gprs_rlcmac_bts *bts = bts_main_data();
+#ifdef ENABLE_SYSMODSP
if (bts->trx[trx].fl1h)
l1if_pdch_req(bts->trx[trx].fl1h, ts, 1, fn, arfcn, block_nr,
msg->data, msg->len);
else
#endif
pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr,
- msg->data, msg->len);
+ msg->data, msg->len, bts->gsmtap);
msgb_free(msg);
}
void pcu_l1if_tx_agch(bitvec * block, int plen)
{
uint8_t data[23]; /* prefix PLEN */
-
+ struct gprs_rlcmac_bts *bts = bts_main_data();
+
/* FIXME: why does OpenBTS has no PLEN and no fill in message? */
bitvec_pack(block, data + 1);
data[0] = (plen << 2) | 0x01;
- pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23);
+ pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23, bts->gsmtap);
}
void pcu_l1if_tx_pch(bitvec * block, int plen, const char *imsi)
{
uint8_t data[23+3]; /* prefix PLEN */
+ struct gprs_rlcmac_bts *bts = bts_main_data();
/* paging group */
if (!imsi || strlen(imsi) < 3)
@@ -177,7 +183,7 @@ void pcu_l1if_tx_pch(bitvec * block, int plen, const char *imsi)
bitvec_pack(block, data + 3+1);
data[3] = (plen << 2) | 0x01;
- pcu_tx_data_req(0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, 23+3);
+ pcu_tx_data_req(0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, 23+3, bts->gsmtap);
}
extern "C" void pcu_rx_block_time(uint16_t arfcn, uint32_t fn, uint8_t ts_no)
@@ -200,7 +206,7 @@ extern "C" int pcu_rx_data_ind_pdtch(uint8_t trx_no, uint8_t
ts_no, uint8_t *dat
return pdch->rcv_block(data, len, fn, meas);
}
-static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
+static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind, struct gsmtap_inst *gsmtap)
{
int rc = 0;
pcu_l1_meas meas;
@@ -223,6 +229,15 @@ static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
rc = -EINVAL;
}
+ if (rc < 0)
+ return rc;
+
+ int r = gsmtap_send(gsmtap, data_ind->arfcn | GSMTAP_ARFCN_F_UPLINK,
data_ind->ts_nr,
+ GSMTAP_CHANNEL_PACCH, 0, data_ind->fn, 0, 0, data_ind->data,
data_ind->len);
+ if (r < 0) {
+ LOGP(DL1IF, LOGL_ERROR, "Sending RX data via GSMTAP failed: %d\n", r);
+ }
+
return rc;
}
@@ -508,10 +523,11 @@ static int pcu_rx_pag_req(struct gsm_pcu_if_pag_req *pag_req)
int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim)
{
int rc = 0;
+ struct gprs_rlcmac_bts *bts = bts_main_data();
switch (msg_type) {
case PCU_IF_MSG_DATA_IND:
- rc = pcu_rx_data_ind(&pcu_prim->u.data_ind);
+ rc = pcu_rx_data_ind(&pcu_prim->u.data_ind, bts->gsmtap);
break;
case PCU_IF_MSG_DATA_CNF:
rc = pcu_rx_data_cnf(&pcu_prim->u.data_cnf);
--
2.7.1
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