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netlink: fix empty route index discovery

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This commit is contained in:
Andy Green 2021-09-14 08:07:10 +01:00
parent d069098683
commit 919981fba6
1 changed files with 9 additions and 4 deletions
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13
lib/core-net/route.c
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@ -96,11 +96,15 @@ _lws_routing_table_dump(struct lws_context *cx)
lws_route_uidx_t
_lws_route_get_uidx(struct lws_context *cx)
{
uint8_t ou;
if (!cx->route_uidx)
cx->route_uidx++;
while (1) {
char again = 0;
ou = cx->route_uidx;
do {
uint8_t again = 0;
/* Anybody in the table already uses the pt's next uidx? */
@ -113,17 +117,18 @@ _lws_route_get_uidx(struct lws_context *cx)
cx->route_uidx++;
if (!cx->route_uidx)
cx->route_uidx++;
if (again) {
if (cx->route_uidx == ou) {
assert(0); /* we have filled up the 8-bit uidx space? */
return 0;
}
again = 1;
break;
}
} lws_end_foreach_dll(d);
if (!again)
return cx->route_uidx++;
}
} while (1);
}
lws_route_t *