From d23c7107bfbaac955289685c522c7ff99dad3780 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Fri, 10 Nov 2006 11:46:34 -0200 Subject: [PATCH] [DCCP]: Simplify jump labels in dccp_v{4,6}_rcv This is a code simplification and was singled out from the DCCPv6 Oops patch on http://www.mail-archive.com/dccp@vger.kernel.org/msg00600.html It mainly makes the code consistent between ipv{4,6}.c for the functions dccp_v4_rcv dccp_v6_rcv and removes the do_time_wait label to simplify code somewhat. Commiter note: fixed up a compile problem, trivial. Signed-off-by: Gerrit Renker Signed-off-by: Arnaldo Carvalho de Melo --- net/dccp/ipv4.c | 15 ++++----------- net/dccp/ipv6.c | 22 ++++++++++------------ 2 files changed, 14 insertions(+), 23 deletions(-) diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index ce8eed32dbeb..7107885ada7e 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -910,8 +910,7 @@ static int dccp_v4_rcv(struct sk_buff *skb) dccp_pr_debug_cat("\n"); } else { DCCP_SKB_CB(skb)->dccpd_ack_seq = dccp_hdr_ack_seq(skb); - dccp_pr_debug_cat(", ack=%llu\n", - (unsigned long long) + dccp_pr_debug_cat(", ack=%llu\n", (unsigned long long) DCCP_SKB_CB(skb)->dccpd_ack_seq); } @@ -940,11 +939,10 @@ static int dccp_v4_rcv(struct sk_buff *skb) * Generate Reset(No Connection) unless P.type == Reset * Drop packet and return */ - if (sk->sk_state == DCCP_TIME_WAIT) { - dccp_pr_debug("sk->sk_state == DCCP_TIME_WAIT: " - "do_time_wait\n"); - goto do_time_wait; + dccp_pr_debug("sk->sk_state == DCCP_TIME_WAIT: do_time_wait\n"); + inet_twsk_put(inet_twsk(sk)); + goto no_dccp_socket; } if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) @@ -968,17 +966,12 @@ no_dccp_socket: } discard_it: - /* Discard frame. */ kfree_skb(skb); return 0; discard_and_relse: sock_put(sk); goto discard_it; - -do_time_wait: - inet_twsk_put(inet_twsk(sk)); - goto no_dccp_socket; } static struct inet_connection_sock_af_ops dccp_ipv4_af_ops = { diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 116bddb64b80..dee085301576 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -1071,8 +1071,11 @@ static int dccp_v6_rcv(struct sk_buff **pskb) * Generate Reset(No Connection) unless P.type == Reset * Drop packet and return */ - if (sk == NULL) + if (sk == NULL) { + dccp_pr_debug("failed to look up flow ID in table and " + "get corresponding socket\n"); goto no_dccp_socket; + } /* * Step 2: @@ -1080,8 +1083,11 @@ static int dccp_v6_rcv(struct sk_buff **pskb) * Generate Reset(No Connection) unless P.type == Reset * Drop packet and return */ - if (sk->sk_state == DCCP_TIME_WAIT) - goto do_time_wait; + if (sk->sk_state == DCCP_TIME_WAIT) { + dccp_pr_debug("sk->sk_state == DCCP_TIME_WAIT: do_time_wait\n"); + inet_twsk_put(inet_twsk(sk)); + goto no_dccp_socket; + } if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) goto discard_and_relse; @@ -1101,22 +1107,14 @@ no_dccp_socket: DCCP_RESET_CODE_NO_CONNECTION; dccp_v6_ctl_send_reset(skb); } -discard_it: - - /* - * Discard frame - */ +discard_it: kfree_skb(skb); return 0; discard_and_relse: sock_put(sk); goto discard_it; - -do_time_wait: - inet_twsk_put(inet_twsk(sk)); - goto no_dccp_socket; } static struct inet_connection_sock_af_ops dccp_ipv6_af_ops = { -- 2.20.1