input: fix multiple BTS attached to single line scenario
With multiple BTS attached to a single line, we have to call
->line_update() multiple times. I broke this myself while avoiding
that A-bis over IP drivers bind to the socket several times.
To fix this situation, Harald prefers that this case is internally
handled by the ipaccess and hsl drivers by means of the driver_data
field in the e1inp_line structure.
Reported-by: Gus Bourg <gus@bourg.net>
diff --git a/src/input/hsl.c b/src/input/hsl.c
index dc7532b..60eea17 100644
--- a/src/input/hsl.c
+++ b/src/input/hsl.c
@@ -456,9 +456,29 @@
return 0;
}
+struct hsl_line {
+ int line_already_initialized;
+};
+
static int hsl_line_update(struct e1inp_line *line)
{
int ret = -ENOENT;
+ struct hsl_line *hl;
+
+ if (!line->driver_data)
+ line->driver_data = talloc_zero(line, struct hsl_line);
+
+ if (!line->driver_data) {
+ LOGP(DLINP, LOGL_NOTICE, "hsl: OOM in line update\n");
+ return -ENOMEM;
+ }
+ hl = line->driver_data;
+
+ /* We only initialize this line once. */
+ if (hl->line_already_initialized)
+ return 0;
+
+ hl->line_already_initialized = 1;
switch(line->ops->cfg.ipa.role) {
case E1INP_LINE_R_BSC: