netdev - [PATCH] Eliminate some unnecessary gotos in tcp v4 hash handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <200704051248.44989.ak@suse.de>
Date:	Thu, 5 Apr 2007 12:48:44 +0200
From:	Andi Kleen <ak@...e.de>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org
Subject: [PATCH] Eliminate some unnecessary gotos in tcp v4 hash handling


The compiler eliminates them anyways and this makes the code easier to read
and shorter.

Signed-off-by: Andi Kleen <ak@...e.de>

Index: linux-2.6.21-rc3-net/net/ipv4/tcp_ipv4.c
===================================================================
--- linux-2.6.21-rc3-net.orig/net/ipv4/tcp_ipv4.c
+++ linux-2.6.21-rc3-net/net/ipv4/tcp_ipv4.c
@@ -2052,8 +2052,7 @@ static void *established_get_first(struc
 			if (sk->sk_family != st->family) {
 				continue;
 			}
-			rc = sk;
-			goto out;
+			return sk;
 		}
 		st->state = TCP_SEQ_STATE_TIME_WAIT;
 		inet_twsk_for_each(tw, node,
@@ -2061,13 +2060,11 @@ static void *established_get_first(struc
 			if (tw->tw_family != st->family) {
 				continue;
 			}
-			rc = tw;
-			goto out;
+			return tw;
 		}
 		read_unlock(&tcp_hashinfo.ehash[st->bucket].lock);
 		st->state = TCP_SEQ_STATE_ESTABLISHED;
 	}
-out:
 	return rc;
 }
 
@@ -2088,10 +2085,8 @@ get_tw:
 		while (tw && tw->tw_family != st->family) {
 			tw = tw_next(tw);
 		}
-		if (tw) {
-			cur = tw;
-			goto out;
-		}
+		if (tw)
+			return tw; 
 		read_unlock(&tcp_hashinfo.ehash[st->bucket].lock);
 		st->state = TCP_SEQ_STATE_ESTABLISHED;
 
@@ -2111,16 +2106,12 @@ get_tw:
 
 	sk_for_each_from(sk, node) {
 		if (sk->sk_family == st->family)
-			goto found;
+			return sk; 
 	}
 
 	st->state = TCP_SEQ_STATE_TIME_WAIT;
 	tw = tw_head(&tcp_hashinfo.ehash[st->bucket].twchain);
 	goto get_tw;
-found:
-	cur = sk;
-out:
-	return cur;
 }
 
 static void *established_get_idx(struct seq_file *seq, loff_t pos)
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html