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modem: hl7800: Only reconfig DNS if iface up

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In the DNS work callback ensure the iface is up
(on the LTE network) before trying to reconfigure the
DNS resolver with the DNS address.

Signed-off-by: Ryan Erickson <ryan.erickson@lairdconnect.com>
This commit is contained in:
Ryan Erickson 2021-09-10 08:44:22 -05:00 • committed by Christopher Friedt
commit a28a20b50f
1 changed files with 9 additions and 7 deletions
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16
drivers/modem/hl7800.c
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@ -1709,14 +1709,16 @@ static void dns_work_cb(struct k_work *work)
struct dns_resolve_context *dnsCtx; struct dns_resolve_context *dnsCtx;
static const char * const dns_servers_str[] = { ictx.dns_string, NULL }; static const char * const dns_servers_str[] = { ictx.dns_string, NULL };
/* set new DNS addr in DNS resolver */ if (ictx.iface && net_if_is_up(ictx.iface)) {
LOG_DBG("Refresh DNS resolver"); /* set new DNS addr in DNS resolver */
dnsCtx = dns_resolve_get_default(); LOG_DBG("Refresh DNS resolver");
dnsCtx = dns_resolve_get_default();
ret = dns_resolve_reconfigure(dnsCtx, dns_servers_str, NULL); ret = dns_resolve_reconfigure(dnsCtx, dns_servers_str, NULL);
if (ret < 0) { if (ret < 0) {
LOG_ERR("dns_resolve_init fail (%d)", ret); LOG_ERR("dns_resolve_init fail (%d)", ret);
return; return;
}
} }
#endif #endif
} }