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osmo-pcu
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osmo-pcu/src/sysmo_l1_if.cpp

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/* sysmo_l1_if.cpp
*
* Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <sys/socket.h>
#include <sys/un.h>
extern "C" {
#include <osmocom/core/talloc.h>
#include <osmocom/core/select.h>
#include <osmocom/core/msgb.h>
}
#include <gprs_rlcmac.h>
#include <pcu_l1_if.h>
#include <gprs_debug.h>
#include <gprs_bssgp_pcu.h>
#include "../../osmo-bts/include/osmo-bts/pcuif_proto.h"
static int pcu_sock_send(struct msgb *msg);
static void pcu_sock_timeout(void *_priv);
// Variable for storage current FN.
int frame_number;
int get_current_fn()
{
return frame_number;
}
void set_current_fn(int fn)
{
frame_number = fn;
}
/*
* PCU messages
*/
struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr)
{
struct msgb *msg;
struct gsm_pcu_if *pcu_prim;
msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx");
if (!msg)
return NULL;
msgb_put(msg, sizeof(struct gsm_pcu_if));
pcu_prim = (struct gsm_pcu_if *) msg->data;
pcu_prim->msg_type = msg_type;
pcu_prim->bts_nr = bts_nr;
return msg;
}
static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate)
{
struct msgb *msg;
struct gsm_pcu_if *pcu_prim;
struct gsm_pcu_if_act_req *act_req;
LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n",
(activate) ? "activate" : "deactivate", trx, ts);
msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0);
if (!msg)
return -ENOMEM;
pcu_prim = (struct gsm_pcu_if *) msg->data;
act_req = &pcu_prim->u.act_req;
act_req->activate = activate;
act_req->trx_nr = trx;
act_req->ts_nr = ts;
return pcu_sock_send(msg);
}
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)
{
struct msgb *msg;
struct gsm_pcu_if *pcu_prim;
struct gsm_pcu_if_data *data_req;
LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d "
"arfcn=%d fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn,
block_nr, osmo_hexdump(data, len));
msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0);
if (!msg)
return -ENOMEM;
pcu_prim = (struct gsm_pcu_if *) msg->data;
data_req = &pcu_prim->u.data_req;
data_req->sapi = sapi;
data_req->fn = fn;
data_req->arfcn = arfcn;
data_req->trx_nr = trx;
data_req->ts_nr = ts;
data_req->block_nr = block_nr;
memcpy(data_req->data, data, len);
data_req->len = 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)
{
pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr,
msg->data, msg->len);
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)
{
pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr,
msg->data, msg->len);
msgb_free(msg);
}
void pcu_l1if_tx_agch(bitvec * block, int len)
{
uint8_t data[24]; /* prefix PLEN */
/* FIXME: why does OpenBTS has no PLEN and no fill in message? */
bitvec_pack(block, data + 1);
data[0] = (len << 2) | 0x01;
pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23);
}
static void pcu_l1if_tx_bcch(uint8_t *data, int len)
{
pcu_tx_data_req(0, 0, PCU_IF_SAPI_BCCH, 0, 0, 0, data, len);
}
static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
{
int rc = 0;
LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d "
"block=%d data=%s\n", data_ind->sapi,
data_ind->arfcn, data_ind->block_nr,
osmo_hexdump(data_ind->data, data_ind->len));
switch (data_ind->sapi) {
case PCU_IF_SAPI_PDTCH:
rc = gprs_rlcmac_rcv_block(data_ind->data, data_ind->len,
data_ind->fn);
break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with "
"unsupported sapi %d\n", data_ind->sapi);
rc = -EINVAL;
}
return rc;
}
static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req)
{
int rc = 0;
LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d "
"arfcn=%d fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr,
rts_req->sapi, rts_req->arfcn, rts_req->fn, rts_req->block_nr);
switch (rts_req->sapi) {
case PCU_IF_SAPI_PDTCH:
gprs_rlcmac_rcv_rts_block(rts_req->trx_nr, rts_req->ts_nr,
rts_req->arfcn, rts_req->fn, rts_req->block_nr);
break;
case PCU_IF_SAPI_PTCCH:
/* FIXME */
{
struct msgb *msg = msgb_alloc(23, "l1_prim");
memset(msgb_put(msg, 23), 0x2b, 23);
pcu_l1if_tx_ptcch(msg, rts_req->trx_nr, rts_req->ts_nr,
rts_req->arfcn, rts_req->fn, rts_req->block_nr);
}
break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with "
"unsupported sapi %d\n", rts_req->sapi);
rc = -EINVAL;
}
return rc;
}
static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind)
{
int rc = 0;
LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d "
"qta=%d, ra=%d, fn=%d\n", rach_ind->sapi, rach_ind->qta,
rach_ind->ra, rach_ind->fn);
switch (rach_ind->sapi) {
case PCU_IF_SAPI_RACH:
rc = gprs_rlcmac_rcv_rach(rach_ind->ra, rach_ind->fn,
rach_ind->qta);
break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with "
"unsupported sapi %d\n", rach_ind->sapi);
rc = -EINVAL;
}
return rc;
}
static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
int rc = 0;
int trx, ts, tfi;
struct gprs_rlcmac_tbf *tbf;
int i;
LOGP(DL1IF, LOGL_INFO, "Info indication received:\n");
if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) {
LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n");
bssgp_failed:
/* free all TBF */
for (trx = 0; trx < 8; trx++) {
bts->trx[trx].arfcn = info_ind->trx[trx].arfcn;
for (ts = 0; ts < 8; ts++) {
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (tbf)
tbf_free(tbf);
}
}
}
gprs_bssgp_destroy();
return 0;
}
LOGP(DL1IF, LOGL_INFO, "BTS available\n");
LOGP(DL1IF, LOGL_INFO, " mcc=%d\n", info_ind->mcc);
LOGP(DL1IF, LOGL_INFO, " mnc=%d\n", info_ind->mnc);
LOGP(DL1IF, LOGL_INFO, " lac=%d\n", info_ind->lac);
LOGP(DL1IF, LOGL_INFO, " rac=%d\n", info_ind->rac);
LOGP(DL1IF, LOGL_INFO, " cell_id=%d\n", info_ind->cell_id);
LOGP(DL1IF, LOGL_INFO, " nsei=%d\n", info_ind->nsei);
LOGP(DL1IF, LOGL_INFO, " nse_timer=%d %d %d %d %d %d %d\n",
info_ind->nse_timer[0], info_ind->nse_timer[1],
info_ind->nse_timer[2], info_ind->nse_timer[3],
info_ind->nse_timer[4], info_ind->nse_timer[5],
info_ind->nse_timer[6]);
LOGP(DL1IF, LOGL_INFO, " cell_timer=%d %d %d %d %d %d %d %d %d %d %d\n",
info_ind->cell_timer[0], info_ind->cell_timer[1],
info_ind->cell_timer[2], info_ind->cell_timer[3],
info_ind->cell_timer[4], info_ind->cell_timer[5],
info_ind->cell_timer[6], info_ind->cell_timer[7],
info_ind->cell_timer[8], info_ind->cell_timer[9],
info_ind->cell_timer[10]);
LOGP(DL1IF, LOGL_INFO, " repeat_time=%d\n", info_ind->repeat_time);
LOGP(DL1IF, LOGL_INFO, " repeat_count=%d\n", info_ind->repeat_count);
LOGP(DL1IF, LOGL_INFO, " bvci=%d\n", info_ind->bvci);
LOGP(DL1IF, LOGL_INFO, " t3142=%d\n", info_ind->t3142);
LOGP(DL1IF, LOGL_INFO, " t3169=%d\n", info_ind->t3169);
LOGP(DL1IF, LOGL_INFO, " t3191=%d\n", info_ind->t3191);
LOGP(DL1IF, LOGL_INFO, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10);
LOGP(DL1IF, LOGL_INFO, " t3195=%d\n", info_ind->t3195);
LOGP(DL1IF, LOGL_INFO, " n3101=%d\n", info_ind->n3101);
LOGP(DL1IF, LOGL_INFO, " n3103=%d\n", info_ind->n3103);
LOGP(DL1IF, LOGL_INFO, " n3105=%d\n", info_ind->n3105);
LOGP(DL1IF, LOGL_INFO, " cv_countdown=%d\n", info_ind->cv_countdown);
LOGP(DL1IF, LOGL_INFO, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext);
LOGP(DL1IF, LOGL_INFO, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext);
for (i = 0; i < 4; i++) {
if ((info_ind->flags & (PCU_IF_FLAG_CS1 << i)))
LOGP(DL1IF, LOGL_INFO, " Use CS%d\n", i+1);
}
for (i = 0; i < 9; i++) {
if ((info_ind->flags & (PCU_IF_FLAG_MCS1 << i)))
LOGP(DL1IF, LOGL_INFO, " Use MCS%d\n", i+1);
}
LOGP(DL1IF, LOGL_INFO, " initial_cs=%d\n", info_ind->initial_cs);
LOGP(DL1IF, LOGL_INFO, " initial_mcs=%d\n", info_ind->initial_mcs);
LOGP(DL1IF, LOGL_INFO, " nsvci=%d\n", info_ind->nsvci[0]);
LOGP(DL1IF, LOGL_INFO, " local_port=%d\n", info_ind->local_port[0]);
LOGP(DL1IF, LOGL_INFO, " remote_port=%d\n", info_ind->remote_port[0]);
LOGP(DL1IF, LOGL_INFO, " remote_ip=%d\n", info_ind->remote_ip[0]);
rc = gprs_bssgp_create(info_ind->remote_ip[0], info_ind->remote_port[0],
info_ind->nsei, info_ind->nsvci[0], info_ind->bvci,
info_ind->mcc, info_ind->mnc, info_ind->lac, info_ind->rac,
info_ind->cell_id);
if (rc < 0) {
LOGP(DL1IF, LOGL_NOTICE, "SGSN not available\n");
goto bssgp_failed;
}
bts->cs1 = !!(info_ind->flags & PCU_IF_FLAG_CS1);
bts->cs2 = !!(info_ind->flags & PCU_IF_FLAG_CS2);
bts->cs3 = !!(info_ind->flags & PCU_IF_FLAG_CS3);
bts->cs4 = !!(info_ind->flags & PCU_IF_FLAG_CS4);
if (!bts->cs1 && !bts->cs2 && !bts->cs3 && !bts->cs4)
bts->cs1 = 1;
if (info_ind->t3142) { /* if timer values are set */
bts->t3142 = info_ind->t3142;
bts->t3169 = info_ind->t3169;
bts->t3191 = info_ind->t3191;
bts->t3193_msec = info_ind->t3193_10ms * 10;
bts->t3195 = info_ind->t3195;
bts->n3101 = info_ind->n3101;
bts->n3103 = info_ind->n3103;
bts->n3105 = info_ind->n3105;
}
if (info_ind->initial_cs < 1 || info_ind->initial_cs > 4)
bts->initial_cs = 1;
else
bts->initial_cs = info_ind->initial_cs;
for (trx = 0; trx < 8; trx++) {
bts->trx[trx].arfcn = info_ind->trx[trx].arfcn;
for (ts = 0; ts < 8; ts++) {
if ((info_ind->trx[trx].pdch_mask & (1 << ts))) {
/* FIXME: activate dynamically at RLCMAC */
if (!bts->trx[trx].pdch[ts].enable)
pcu_tx_act_req(trx, ts, 1);
bts->trx[trx].pdch[ts].enable = 1;
bts->trx[trx].pdch[ts].tsc =
info_ind->trx[trx].tsc[ts];
LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n",
trx, ts);
} else {
if (bts->trx[trx].pdch[ts].enable)
pcu_tx_act_req(trx, ts, 0);
bts->trx[trx].pdch[ts].enable = 0;
/* kick all tbf FIXME: multislot */
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (tbf)
tbf_free(tbf);
}
}
}
}
return rc;
}
static int pcu_rx_time_ind(struct gsm_pcu_if_time_ind *time_ind)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
int trx, ts, tfi;
struct gprs_rlcmac_tbf *tbf;
uint32_t elapsed;
uint8_t fn13 = time_ind->fn % 13;
/* omit frame numbers not starting at a MAC block */
if (fn13 != 0 && fn13 != 4 && fn13 != 8)
return 0;
LOGP(DL1IF, LOGL_DEBUG, "Time indication received: %d\n",
time_ind->fn % 52);
set_current_fn(time_ind->fn);
/* check for poll timeout */
for (trx = 0; trx < 8; trx++) {
for (ts = 0; ts < 8; ts++) {
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (!tbf)
continue;
if (tbf->poll_state != GPRS_RLCMAC_POLL_SCHED)
continue;
elapsed = (frame_number - tbf->poll_fn)
% 2715648;
if (elapsed >= 20 && elapsed < 200)
gprs_rlcmac_poll_timeout(tbf);
}
}
}
return 0;
}
static int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim)
{
int rc = 0;
switch (msg_type) {
case PCU_IF_MSG_DATA_IND:
rc = pcu_rx_data_ind(&pcu_prim->u.data_ind);
break;
case PCU_IF_MSG_RTS_REQ:
rc = pcu_rx_rts_req(&pcu_prim->u.rts_req);
break;
case PCU_IF_MSG_RACH_IND:
rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind);
break;
case PCU_IF_MSG_INFO_IND:
rc = pcu_rx_info_ind(&pcu_prim->u.info_ind);
break;
case PCU_IF_MSG_TIME_IND:
rc = pcu_rx_time_ind(&pcu_prim->u.time_ind);
break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received unknwon PCU msg type %d\n",
msg_type);
rc = -EINVAL;
}
return rc;
}
/*
* SYSMO-PCU socket functions
*/
struct pcu_sock_state {
struct osmo_fd conn_bfd; /* fd for connection to lcr */
struct osmo_timer_list timer; /* socket connect retry timer */
struct llist_head upqueue; /* queue for sending messages */
} *pcu_sock_state = NULL;
static int pcu_sock_send(struct msgb *msg)
{
struct pcu_sock_state *state = pcu_sock_state;
struct osmo_fd *conn_bfd;
if (!state) {
LOGP(DL1IF, LOGL_NOTICE, "PCU socket not created, dropping "
"message\n");
return -EINVAL;
}
conn_bfd = &state->conn_bfd;
if (conn_bfd->fd <= 0) {
LOGP(DL1IF, LOGL_NOTICE, "PCU socket not connected, dropping "
"message\n");
return -EIO;
}
msgb_enqueue(&state->upqueue, msg);
conn_bfd->when |= BSC_FD_WRITE;
return 0;
}
static void pcu_sock_close(struct pcu_sock_state *state)
{
struct osmo_fd *bfd = &state->conn_bfd;
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_tbf *tbf;
uint8_t trx, ts, tfi;
LOGP(DL1IF, LOGL_NOTICE, "PCU socket has LOST connection\n");
close(bfd->fd);
bfd->fd = -1;
osmo_fd_unregister(bfd);
/* flush the queue */
while (!llist_empty(&state->upqueue)) {
struct msgb *msg = msgb_dequeue(&state->upqueue);
msgb_free(msg);
}
/* disable all slots, kick all TBFs */
for (trx = 0; trx < 8; trx++) {
for (ts = 0; ts < 8; ts++) {
bts->trx[trx].pdch[ts].enable = 0;
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (tbf)
tbf_free(tbf);
}
}
}
gprs_bssgp_destroy();
state->timer.cb = pcu_sock_timeout;
osmo_timer_schedule(&state->timer, 5, 0);
}
static int pcu_sock_read(struct osmo_fd *bfd)
{
struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data;
struct gsm_pcu_if *pcu_prim;
struct msgb *msg;
int rc;
msg = msgb_alloc(sizeof(*pcu_prim), "pcu_sock_rx");
if (!msg)
return -ENOMEM;
pcu_prim = (struct gsm_pcu_if *) msg->tail;
rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0);
if (rc == 0)
goto close;
if (rc < 0) {
if (errno == EAGAIN)
return 0;
goto close;
}
rc = pcu_rx(pcu_prim->msg_type, pcu_prim);
/* as we always synchronously process the message in pcu_rx() and
* its callbacks, we can free the message here. */
msgb_free(msg);
return rc;
close:
msgb_free(msg);
pcu_sock_close(state);
return -1;
}
static int pcu_sock_write(struct osmo_fd *bfd)
{
struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data;
int rc;
while (!llist_empty(&state->upqueue)) {
struct msgb *msg, *msg2;
struct gsm_pcu_if *pcu_prim;
/* peek at the beginning of the queue */
msg = llist_entry(state->upqueue.next, struct msgb, list);
pcu_prim = (struct gsm_pcu_if *)msg->data;
bfd->when &= ~BSC_FD_WRITE;
/* bug hunter 8-): maybe someone forgot msgb_put(...) ? */
if (!msgb_length(msg)) {
LOGP(DL1IF, LOGL_ERROR, "message type (%d) with ZERO "
"bytes!\n", pcu_prim->msg_type);
goto dontsend;
}
/* try to send it over the socket */
rc = write(bfd->fd, msgb_data(msg), msgb_length(msg));
if (rc == 0)
goto close;
if (rc < 0) {
if (errno == EAGAIN) {
bfd->when |= BSC_FD_WRITE;
break;
}
goto close;
}
dontsend:
/* _after_ we send it, we can deueue */
msg2 = msgb_dequeue(&state->upqueue);
assert(msg == msg2);
msgb_free(msg);
}
return 0;
close:
pcu_sock_close(state);
return -1;
}
static int pcu_sock_cb(struct osmo_fd *bfd, unsigned int flags)
{
int rc = 0;
if (flags & BSC_FD_READ)
rc = pcu_sock_read(bfd);
if (rc < 0)
return rc;
if (flags & BSC_FD_WRITE)
rc = pcu_sock_write(bfd);
return rc;
}
int pcu_l1if_open(void)
{
struct pcu_sock_state *state;
struct osmo_fd *bfd;
struct sockaddr_un local;
unsigned int namelen;
int rc;
state = pcu_sock_state;
if (!state) {
state = talloc_zero(NULL, struct pcu_sock_state);
if (!state)
return -ENOMEM;
INIT_LLIST_HEAD(&state->upqueue);
}
bfd = &state->conn_bfd;
bfd->fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
if (bfd->fd < 0) {
LOGP(DL1IF, LOGL_ERROR, "Failed to create PCU-SYSMO socket.\n");
talloc_free(state);
return -1;
}
local.sun_family = AF_UNIX;
strncpy(local.sun_path, "/tmp/pcu_bts", sizeof(local.sun_path));
local.sun_path[sizeof(local.sun_path) - 1] = '\0';
/* we use the same magic that X11 uses in Xtranssock.c for
* calculating the proper length of the sockaddr */
#if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
local.sun_len = strlen(local.sun_path);
#endif
#if defined(BSD44SOCKETS) || defined(SUN_LEN)
namelen = SUN_LEN(&local);
#else
namelen = strlen(local.sun_path) +
offsetof(struct sockaddr_un, sun_path);
#endif
rc = connect(bfd->fd, (struct sockaddr *) &local, namelen);
if (rc != 0) {
LOGP(DL1IF, LOGL_ERROR, "Failed to Connect the PCU-SYSMO "
"socket, delaying... '%s'\n", local.sun_path);
close(bfd->fd);
bfd->fd = -1;
state->timer.cb = pcu_sock_timeout;
osmo_timer_schedule(&state->timer, 5, 0);
return -1;
}
bfd->when = BSC_FD_READ;
bfd->cb = pcu_sock_cb;
bfd->data = state;
rc = osmo_fd_register(bfd);
if (rc < 0) {
LOGP(DL1IF, LOGL_ERROR, "Could not register PCU fd: %d\n", rc);
close(bfd->fd);
talloc_free(state);
return rc;
}
LOGP(DL1IF, LOGL_NOTICE, "PCU-SYSMO socket has been connected\n");
pcu_sock_state = state;
return 0;
}
void pcu_l1if_close(void)
{
struct pcu_sock_state *state = pcu_sock_state;
struct osmo_fd *bfd;
if (!state)
return;
if (osmo_timer_pending(&state->timer))
osmo_timer_del(&state->timer);
bfd = &state->conn_bfd;
if (bfd->fd > 0)
pcu_sock_close(state);
talloc_free(state);
pcu_sock_state = NULL;
}
static void pcu_sock_timeout(void *_priv)
{
pcu_l1if_open();
}
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