LU-12452 lnet: inherit default lnd tunings from modparams

[fs/lustre-release.git] / lnet / klnds / socklnd / socklnd.c

diff --git a/lnet/klnds/socklnd/socklnd.c b/lnet/klnds/socklnd/socklnd.c
index 1947d36..2c2070c 100644 (file)
--- a/lnet/klnds/socklnd/socklnd.c
+++ b/lnet/klnds/socklnd/socklnd.c
@@ -837,6 +837,27 @@ ksocknal_nl_get(int cmd, struct sk_buff *msg, int type, void *data)
        return 0;
 }
 
+static inline void
+ksocknal_nl_set_default(int cmd, int type, void *data)
+{
+       struct lnet_lnd_tunables *tunables = data;
+       struct lnet_ioctl_config_socklnd_tunables *lt;
+       struct lnet_ioctl_config_socklnd_tunables *df;
+
+       lt = &tunables->lnd_tun_u.lnd_sock;
+       df = &ksock_default_tunables;
+       switch (type) {
+       case LNET_NET_SOCKLND_TUNABLES_ATTR_CONNS_PER_PEER:
+               lt->lnd_conns_per_peer = df->lnd_conns_per_peer;
+               break;
+       case LNET_NET_SOCKLND_TUNABLES_ATTR_LND_TIMEOUT:
+               lt->lnd_timeout = df->lnd_timeout;
+               fallthrough;
+       default:
+               break;
+       }
+}
+
 static int
 ksocknal_nl_set(int cmd, struct nlattr *attr, int type, void *data)
 {
@@ -847,6 +868,11 @@ ksocknal_nl_set(int cmd, struct nlattr *attr, int type, void *data)
        if (cmd != LNET_CMD_NETS)
                return -EOPNOTSUPP;
 
+       if (!attr) {
+               ksocknal_nl_set_default(cmd, type, data);
+               return 0;
+       }
+
        if (nla_type(attr) != LN_SCALAR_ATTR_INT_VALUE)
                return -EINVAL;