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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id t4sm9219108qke.7.2021.06.20.18.39.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 20 Jun 2021 18:39:02 -0700 (PDT) From: Xin Long To: network dev , davem@davemloft.net, kuba@kernel.org, Marcelo Ricardo Leitner , linux-sctp@vger.kernel.org Subject: [PATCH net-next 11/14] sctp: remove the unessessary hold for idev in sctp_v6_err Date: Sun, 20 Jun 2021 21:38:46 -0400 Message-Id: <156f251cbf9f0d94d3c0ecc44f027f54f889e033.1624239422.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org Same as in tcp_v6_err() and __udp6_lib_err(), there's no need to hold idev in sctp_v6_err(), so just call __in6_dev_get() instead. Signed-off-by: Xin Long --- net/sctp/ipv6.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index bd08807c9e44..50ed4de18069 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -126,7 +126,6 @@ static struct notifier_block sctp_inet6addr_notifier = { static int sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { - struct inet6_dev *idev; struct sock *sk; struct sctp_association *asoc; struct sctp_transport *transport; @@ -135,8 +134,6 @@ static int sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, int err, ret = 0; struct net *net = dev_net(skb->dev); - idev = in6_dev_get(skb->dev); - /* Fix up skb to look at the embedded net header. */ saveip = skb->network_header; savesctp = skb->transport_header; @@ -147,9 +144,8 @@ static int sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, skb->network_header = saveip; skb->transport_header = savesctp; if (!sk) { - __ICMP6_INC_STATS(net, idev, ICMP6_MIB_INERRORS); - ret = -ENOENT; - goto out; + __ICMP6_INC_STATS(net, __in6_dev_get(skb->dev), ICMP6_MIB_INERRORS); + return -ENOENT; } /* Warning: The sock lock is held. Remember to call @@ -185,10 +181,6 @@ static int sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, out_unlock: sctp_err_finish(sk, transport); -out: - if (likely(idev != NULL)) - in6_dev_put(idev); - return ret; } -- 2.27.0