net/sched: Remove unnecessary if statement

It has been deal with the 'if (err' statement in rtnetlink_send()
and rtnl_unicast(). so remove unnecessary if statement.

v2: use the raw name rtnetlink_send().

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index d17a66a..998a237 100644 (file)
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -1351,8 +1351,6 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
        module_put(ops->owner);
        err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                             n->nlmsg_flags & NLM_F_ECHO);
-       if (err > 0)
-               return 0;
        if (err < 0)
                NL_SET_ERR_MSG(extack, "Failed to send TC action flush notification");
 
@@ -1423,8 +1421,6 @@ tcf_del_notify(struct net *net, struct nlmsghdr *n, struct tc_action *actions[],
 
        ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                             n->nlmsg_flags & NLM_F_ECHO);
-       if (ret > 0)
-               return 0;
        return ret;
 }
 
@@ -1481,7 +1477,6 @@ tcf_add_notify(struct net *net, struct nlmsghdr *n, struct tc_action *actions[],
               u32 portid, size_t attr_size, struct netlink_ext_ack *extack)
 {
        struct sk_buff *skb;
-       int err = 0;
 
        skb = alloc_skb(attr_size <= NLMSG_GOODSIZE ? NLMSG_GOODSIZE : attr_size,
                        GFP_KERNEL);
@@ -1495,11 +1490,8 @@ tcf_add_notify(struct net *net, struct nlmsghdr *n, struct tc_action *actions[],
                return -EINVAL;
        }
 
-       err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
-                            n->nlmsg_flags & NLM_F_ECHO);
-       if (err > 0)
-               err = 0;
-       return err;
+       return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+                             n->nlmsg_flags & NLM_F_ECHO);
 }
 
 static int tcf_action_add(struct net *net, struct nlattr *nla,

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index d73b5c5..c8cb59a 100644 (file)
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -1870,13 +1870,10 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
        }
 
        if (unicast)
-               err = netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+               err = rtnl_unicast(skb, net, portid);
        else
                err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                                     n->nlmsg_flags & NLM_F_ECHO);
-
-       if (err > 0)
-               err = 0;
        return err;
 }
 
@@ -1909,15 +1906,13 @@ static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
        }
 
        if (unicast)
-               err = netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+               err = rtnl_unicast(skb, net, portid);
        else
                err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                                     n->nlmsg_flags & NLM_F_ECHO);
        if (err < 0)
                NL_SET_ERR_MSG(extack, "Failed to send filter delete notification");
 
-       if (err > 0)
-               err = 0;
        return err;
 }
 
@@ -2711,13 +2706,11 @@ static int tc_chain_notify(struct tcf_chain *chain, struct sk_buff *oskb,
        }
 
        if (unicast)
-               err = netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+               err = rtnl_unicast(skb, net, portid);
        else
                err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                                     flags & NLM_F_ECHO);
 
-       if (err > 0)
-               err = 0;
        return err;
 }
 
@@ -2741,7 +2734,7 @@ static int tc_chain_notify_delete(const struct tcf_proto_ops *tmplt_ops,
        }
 
        if (unicast)
-               return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+               return rtnl_unicast(skb, net, portid);
 
        return rtnetlink_send(skb, net, portid, RTNLGRP_TC, flags & NLM_F_ECHO);
 }

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index f87d077..5e90e9b 100644 (file)
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1845,7 +1845,6 @@ static int tclass_notify(struct net *net, struct sk_buff *oskb,
 {
        struct sk_buff *skb;
        u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
-       int err = 0;
 
        skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
        if (!skb)
@@ -1856,11 +1855,8 @@ static int tclass_notify(struct net *net, struct sk_buff *oskb,
                return -EINVAL;
        }
 
-       err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
-                            n->nlmsg_flags & NLM_F_ECHO);
-       if (err > 0)
-               err = 0;
-       return err;
+       return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+                             n->nlmsg_flags & NLM_F_ECHO);
 }
 
 static int tclass_del_notify(struct net *net,
@@ -1894,8 +1890,6 @@ static int tclass_del_notify(struct net *net,
 
        err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
                             n->nlmsg_flags & NLM_F_ECHO);
-       if (err > 0)
-               err = 0;
        return err;
 }