static int handle_ts1_read(struct osmo_fd *bfd)
{
struct e1inp_line *line = bfd->data;
struct misdn_line *mline = line->driver_data;
unsigned int ts_nr = bfd->priv_nr;
struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
struct e1inp_sign_link *link;
struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "mISDN TS1");
struct sockaddr_mISDN l2addr;
struct mISDNhead *hh;
socklen_t alen;
int ret;
if (!msg)
return -ENOMEM;
hh = (struct mISDNhead *) msg->data;
alen = sizeof(l2addr);
ret = recvfrom(bfd->fd, msg->data, 300, 0,
(struct sockaddr *) &l2addr, &alen);
if (ret < 0) {
fprintf(stderr, "recvfrom error %s\n", strerror(errno));
msgb_free(msg);
return ret;
}
if (alen != sizeof(l2addr)) {
fprintf(stderr, "%s error len\n", __func__);
msgb_free(msg);
return -EINVAL;
}
msgb_put(msg, ret);
DEBUGP(DLMI, "alen =%d, dev(%d) channel(%d) sapi(%d) tei(%d)\n",
alen, l2addr.dev, l2addr.channel, l2addr.sapi, l2addr.tei);
DEBUGP(DLMI, "<= len = %d, prim(0x%x) id(0x%x): %s\n",
ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim));
switch (hh->prim) {
case DL_INFORMATION_IND:
/* mISDN tells us which channel number is allocated for this
* tuple of (SAPI, TEI). */
DEBUGP(DLMI, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi);
if (!link) {
DEBUGPC(DLMI, "mISDN message for unknown sign_link\n");
msgb_free(msg);
return -EINVAL;
}
/* save the channel number in the driver private struct */
link->driver.misdn.channel = l2addr.channel;
msgb_free(msg);
break;
case DL_ESTABLISH_IND:
DEBUGP(DLMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
/* For some strange reason, sometimes the DL_INFORMATION_IND tells
* us the wrong channel, and we only get the real channel number
* during the DL_ESTABLISH_IND */
link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi);
if (!link) {
DEBUGPC(DLMI, "mISDN message for unknown sign_link\n");
msgb_free(msg);
return -EINVAL;
}
/* save the channel number in the driver private struct */
link->driver.misdn.channel = l2addr.channel;
ret = e1inp_event(e1i_ts, S_L_INP_TEI_UP, l2addr.tei, l2addr.sapi);
msgb_free(msg);
break;
case DL_RELEASE_IND:
DEBUGP(DLMI, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
ret = e1inp_event(e1i_ts, S_L_INP_TEI_DN, l2addr.tei, l2addr.sapi);
msgb_free(msg);
break;
case DL_DATA_IND:
case DL_UNITDATA_IND:
msg->l2h = msg->data + MISDN_HEADER_LEN;
DEBUGP(DLMI, "RX: %s\n", osmo_hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
if (mline->use_userspace_lapd) {
LOGP(DLMI, LOGL_ERROR, "DL_DATA_IND but userspace LAPD ?!?\n");
msgb_free(msg);
return -EIO;
}
ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi);
break;
case PH_ACTIVATE_IND:
DEBUGP(DLMI, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
msgb_free(msg);
break;
case PH_DEACTIVATE_IND:
DEBUGP(DLMI, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
msgb_free(msg);
break;
case PH_DATA_IND:
if (!mline->use_userspace_lapd) {
LOGP(DLMI, LOGL_ERROR, "PH_DATA_IND but kernel LAPD ?!?\n");
return -EIO;
}
/* remove the Misdn Header */
msgb_pull(msg, MISDN_HEADER_LEN);
/* hand into the LAPD code */
DEBUGP(DLMI, "RX: %s\n", osmo_hexdump(msg->data, msg->len));
ret = e1inp_rx_ts_lapd(e1i_ts, msg);
break;
default:
msgb_free(msg);
break;
}
return ret;
}
static int handle_ts1_read(struct bsc_fd *bfd)
{
struct e1inp_line *line = bfd->data;
unsigned int ts_nr = bfd->priv_nr;
struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
struct e1inp_sign_link *link;
struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "mISDN TS1");
struct sockaddr_mISDN l2addr;
struct mISDNhead *hh;
socklen_t alen;
int ret;
if (!msg)
return -ENOMEM;
hh = (struct mISDNhead *) msg->data;
alen = sizeof(l2addr);
ret = recvfrom(bfd->fd, msg->data, 300, 0,
(struct sockaddr *) &l2addr, &alen);
if (ret < 0) {
fprintf(stderr, "recvfrom error %s\n", strerror(errno));
return ret;
}
if (alen != sizeof(l2addr)) {
fprintf(stderr, "%s error len\n", __func__);
return -EINVAL;
}
msgb_put(msg, ret);
DEBUGP(DMI, "alen =%d, dev(%d) channel(%d) sapi(%d) tei(%d)\n",
alen, l2addr.dev, l2addr.channel, l2addr.sapi, l2addr.tei);
DEBUGP(DMI, "<= len = %d, prim(0x%x) id(0x%x): %s\n",
ret, hh->prim, hh->id, get_prim_name(hh->prim));
switch (hh->prim) {
case DL_INFORMATION_IND:
/* mISDN tells us which channel number is allocated for this
* tuple of (SAPI, TEI). */
DEBUGP(DMI, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi);
if (!link) {
DEBUGPC(DMI, "mISDN message for unknown sign_link\n");
msgb_free(msg);
return -EINVAL;
}
/* save the channel number in the driver private struct */
link->driver.misdn.channel = l2addr.channel;
break;
case DL_ESTABLISH_IND:
DEBUGP(DMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
ret = e1inp_event(e1i_ts, EVT_E1_TEI_UP, l2addr.tei, l2addr.sapi);
break;
case DL_RELEASE_IND:
DEBUGP(DMI, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
ret = e1inp_event(e1i_ts, EVT_E1_TEI_DN, l2addr.tei, l2addr.sapi);
break;
case DL_DATA_IND:
case DL_UNITDATA_IND:
msg->l2h = msg->data + MISDN_HEADER_LEN;
DEBUGP(DMI, "RX: %s\n", hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi);
break;
case PH_ACTIVATE_IND:
DEBUGP(DMI, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
break;
case PH_DEACTIVATE_IND:
DEBUGP(DMI, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
break;
default:
break;
}
return ret;
}