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Message-Id: <20210713125318.2682-1-yajun.deng@linux.dev>
Date: Tue, 13 Jul 2021 20:53:18 +0800
From: Yajun Deng <yajun.deng@...ux.dev>
To: davem@...emloft.net, kuba@...nel.org, jhs@...atatu.com,
xiyou.wangcong@...il.com, jiri@...nulli.us, yajun.deng@...ux.dev,
johannes.berg@...el.com, ryazanov.s.a@...il.com, avagin@...il.com,
vladimir.oltean@....com, roopa@...ulusnetworks.com,
zhudi21@...wei.com
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 2/2] net/sched: Remove unnecessary judgment statements
It has been deal with the 'if (err' statement in rtnl_{send, unicast},
so use rtnl_{send, unicast} instead of netlink_{send, unicast}.
Signed-off-by: Yajun Deng <yajun.deng@...ux.dev>
---
net/sched/act_api.c | 20 ++++++--------------
net/sched/cls_api.c | 28 +++++++++++-----------------
net/sched/sch_api.c | 18 ++++++------------
3 files changed, 23 insertions(+), 43 deletions(-)
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index d17a66aab8ee..96fc6f3d080a 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -1349,10 +1349,8 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
nlh->nlmsg_flags |= NLM_F_ROOT;
module_put(ops->owner);
- err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
- if (err > 0)
- return 0;
+ err = rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
if (err < 0)
NL_SET_ERR_MSG(extack, "Failed to send TC action flush notification");
@@ -1421,10 +1419,8 @@ tcf_del_notify(struct net *net, struct nlmsghdr *n, struct tc_action *actions[],
return ret;
}
- ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
- if (ret > 0)
- return 0;
+ ret = rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
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 rtnl_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 d73b5c5514a9..bbf1bd028e7c 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -1870,13 +1870,11 @@ 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);
+ err = rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
- if (err > 0)
- err = 0;
return err;
}
@@ -1909,15 +1907,13 @@ 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);
+ err = rtnl_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 +2707,11 @@ 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);
+ err = rtnl_send(skb, net, portid, RTNLGRP_TC,
+ flags & NLM_F_ECHO);
- if (err > 0)
- err = 0;
return err;
}
@@ -2741,9 +2735,9 @@ 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);
+ return rtnl_send(skb, net, portid, RTNLGRP_TC, flags & NLM_F_ECHO);
}
static int tc_chain_tmplt_add(struct tcf_chain *chain, struct net *net,
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index f87d07736a14..aaec80a047d6 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -987,8 +987,8 @@ static int qdisc_notify(struct net *net, struct sk_buff *oskb,
}
if (skb->len)
- return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
+ return rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
err_out:
kfree_skb(skb);
@@ -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 rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
}
static int tclass_del_notify(struct net *net,
@@ -1892,10 +1888,8 @@ static int tclass_del_notify(struct net *net,
return err;
}
- err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
- if (err > 0)
- err = 0;
+ err = rtnl_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
return err;
}
--
2.32.0
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