diff options
Diffstat (limited to 'openbsc/src/libabis/input/dahdi.c')
-rw-r--r-- | openbsc/src/libabis/input/dahdi.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/openbsc/src/libabis/input/dahdi.c b/openbsc/src/libabis/input/dahdi.c index a7b45a1af..eb66fa018 100644 --- a/openbsc/src/libabis/input/dahdi.c +++ b/openbsc/src/libabis/input/dahdi.c @@ -100,7 +100,7 @@ static int handle_ts1_read(struct osmo_fd *bfd) struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "DAHDI TS1"); lapd_mph_type prim; unsigned int sapi, tei; - int ilen, ret; + int ilen, ret, error = 0; uint8_t *idata; if (!msg) @@ -122,9 +122,21 @@ static int handle_ts1_read(struct osmo_fd *bfd) DEBUGP(DMI, "<= len = %d, sapi(%d) tei(%d)", ret, sapi, tei); - idata = lapd_receive(e1i_ts->driver.dahdi.lapd, msg->data, msg->len, &ilen, &prim); - if (!idata && prim == 0) - return -EIO; + idata = lapd_receive(e1i_ts->driver.dahdi.lapd, msg->data, msg->len, &ilen, &prim, &error); + if (!idata) { + switch(error) { + case LAPD_ERR_UNKNOWN_TEI: + /* We don't know about this TEI, probably the BSC + * lost local states (it crashed or it was stopped), + * notify the driver to see if it can do anything to + * recover the existing signalling links with the BTS. + */ + e1inp_event(e1i_ts, S_INP_TEI_UNKNOWN, tei, sapi); + return -EIO; + } + if (prim == 0) + return -EIO; + } msgb_pull(msg, 2); |