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DAHDI: Handle exceptions

This commit is contained in:
Harald Welte 2011-02-13 14:19:26 +01:00
parent 95aa5c4ae3
commit 44f04da379
1 changed files with 44 additions and 4 deletions
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48
openbsc/src/input/dahdi.c
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@ -54,6 +54,40 @@
#define TS1_ALLOC_SIZE 300
/* Corresponds to dahdi/user.h, only PRI related events */
static const struct value_string dahdi_evt_names[] = {
{ DAHDI_EVENT_NONE, "NONE" },
{ DAHDI_EVENT_ALARM, "ALARM" },
{ DAHDI_EVENT_NOALARM, "NOALARM" },
{ DAHDI_EVENT_ABORT, "HDLC ABORT" },
{ DAHDI_EVENT_OVERRUN, "HDLC OVERRUN" },
{ DAHDI_EVENT_BADFCS, "HDLC BAD FCS" },
{ DAHDI_EVENT_REMOVED, "REMOVED" },
{ 0, NULL }
};
static void handle_dahdi_exception(struct e1inp_ts *ts)
{
int rc, evt;
rc = ioctl(ts->driver.dahdi.fd.fd, DAHDI_GETEVENT, &evt);
if (rc < 0)
return;
LOGP(DMI, LOGL_NOTICE, "Line %u(%s) / TS %u DAHDI EVENT %s\n",
ts->line->num, ts->line->name, ts->num,
get_value_string(dahdi_evt_names, evt));
switch (evt) {
case DAHDI_EVENT_ALARM:
/* FIXME: we should notify the code that the line is gone */
break;
case DAHDI_EVENT_NOALARM:
/* FIXME: alarm has gone, we should re-start the SABM requests */
break;
}
}
static int handle_ts1_read(struct bsc_fd *bfd)
{
struct e1inp_line *line = bfd->data;
@ -69,7 +103,9 @@ static int handle_ts1_read(struct bsc_fd *bfd)
return -ENOMEM;
ret = read(bfd->fd, msg->data, TS1_ALLOC_SIZE - 16);
if (ret < 0) {
if (ret == -1)
handle_dahdi_exception(e1i_ts);
else if (ret < 0) {
perror("read ");
}
msgb_put(msg, ret - 2);
@ -145,12 +181,16 @@ static void timeout_ts1_write(void *data)
static void dahdi_write_msg(uint8_t *data, int len, void *cbdata)
{
struct bsc_fd *bfd = cbdata;
struct e1inp_line *line = bfd->data;
unsigned int ts_nr = bfd->priv_nr;
struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
int ret;
ret = write(bfd->fd, data, len + 2);
if (ret < 0)
fprintf(stderr, "%s write failed %d\n", __func__, ret);
if (ret == -1)
handle_dahdi_exception(e1i_ts);
else if (ret < 0)
LOGP(DMI, LOGL_NOTICE, "%s write failed %d\n", __func__, ret);
}
static int handle_ts1_write(struct bsc_fd *bfd)