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Message-Id: <20210713024824.14359-1-yajun.deng@linux.dev>
Date: Tue, 13 Jul 2021 10:48:24 +0800
From: Yajun Deng <yajun.deng@...ux.dev>
To: davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
kuba@...nel.org, mathew.j.martineau@...ux.intel.com,
matthieu.baerts@...sares.net, pablo@...filter.org,
kadlec@...filter.org, fw@...len.de, vyasevich@...il.com,
nhorman@...driver.com, marcelo.leitner@...il.com,
johannes.berg@...el.com, ast@...nel.org, yhs@...com,
0x7f454c46@...il.com, yajun.deng@...ux.dev, aahringo@...hat.com,
rdunlap@...radead.org
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
mptcp@...ts.linux.dev, netfilter-devel@...r.kernel.org,
coreteam@...filter.org, linux-sctp@...r.kernel.org
Subject: [PATCH v2] net: Use nlmsg_unicast() instead of netlink_unicast()
It has 'if (err >0 )' statement in nlmsg_unicast(), so use nlmsg_unicast()
instead of netlink_unicast(), this looks more concise.
v2: remove the change in netfilter.
Signed-off-by: Yajun Deng <yajun.deng@...ux.dev>
---
net/ipv4/fib_frontend.c | 2 +-
net/ipv4/inet_diag.c | 5 +----
net/ipv4/raw_diag.c | 7 ++-----
net/ipv4/udp_diag.c | 6 ++----
net/mptcp/mptcp_diag.c | 6 ++----
net/netlink/af_netlink.c | 2 +-
net/sctp/diag.c | 6 ++----
net/unix/diag.c | 6 ++----
8 files changed, 13 insertions(+), 27 deletions(-)
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index a933bd6345b1..9fe13e4f5d08 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1376,7 +1376,7 @@ static void nl_fib_input(struct sk_buff *skb)
portid = NETLINK_CB(skb).portid; /* netlink portid */
NETLINK_CB(skb).portid = 0; /* from kernel */
NETLINK_CB(skb).dst_group = 0; /* unicast */
- netlink_unicast(net->ipv4.fibnl, skb, portid, MSG_DONTWAIT);
+ nlmsg_unicast(net->ipv4.fibnl, skb, portid);
}
static int __net_init nl_fib_lookup_init(struct net *net)
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index e65f4ef024a4..ef7897226f08 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -580,10 +580,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
nlmsg_free(rep);
goto out;
}
- err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
out:
if (sk)
diff --git a/net/ipv4/raw_diag.c b/net/ipv4/raw_diag.c
index 1b5b8af27aaf..ccacbde30a2c 100644
--- a/net/ipv4/raw_diag.c
+++ b/net/ipv4/raw_diag.c
@@ -119,11 +119,8 @@ static int raw_diag_dump_one(struct netlink_callback *cb,
return err;
}
- err = netlink_unicast(net->diag_nlsk, rep,
- NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
+
return err;
}
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index b2cee9a307d4..1ed8c4d78e5c 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -77,10 +77,8 @@ static int udp_dump_one(struct udp_table *tbl,
kfree_skb(rep);
goto out;
}
- err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
+
out:
if (sk)
sock_put(sk);
diff --git a/net/mptcp/mptcp_diag.c b/net/mptcp/mptcp_diag.c
index 8f88ddeab6a2..f48eb6315bbb 100644
--- a/net/mptcp/mptcp_diag.c
+++ b/net/mptcp/mptcp_diag.c
@@ -57,10 +57,8 @@ static int mptcp_diag_dump_one(struct netlink_callback *cb,
kfree_skb(rep);
goto out;
}
- err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
+
out:
sock_put(sk);
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index d233ac4a91b6..380f95aacdec 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2471,7 +2471,7 @@ void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err,
nlmsg_end(skb, rep);
- netlink_unicast(in_skb->sk, skb, NETLINK_CB(in_skb).portid, MSG_DONTWAIT);
+ nlmsg_unicast(in_skb->sk, skb, NETLINK_CB(in_skb).portid);
}
EXPORT_SYMBOL(netlink_ack);
diff --git a/net/sctp/diag.c b/net/sctp/diag.c
index 493fc01e5d2b..760b367644c1 100644
--- a/net/sctp/diag.c
+++ b/net/sctp/diag.c
@@ -284,10 +284,8 @@ static int sctp_tsp_dump_one(struct sctp_transport *tsp, void *p)
goto out;
}
- err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
+
out:
return err;
}
diff --git a/net/unix/diag.c b/net/unix/diag.c
index 9ff64f9df1f3..7e7d7f45685a 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -295,10 +295,8 @@ static int unix_diag_get_exact(struct sk_buff *in_skb,
goto again;
}
- err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
- MSG_DONTWAIT);
- if (err > 0)
- err = 0;
+ err = nlmsg_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid);
+
out:
if (sk)
sock_put(sk);
--
2.32.0
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