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[PATCH] UDP: Fix reversed logic in udp_get_port()

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When this code was converted to use sk_for_each() the
logic for the "best hash chain length" code was reversed,
breaking everything.

The original code was of the form:

			size = 0;
			do {
				if (++size >= best_size_so_far)
					goto next;
			} while ((sk = sk->next) != NULL);
			best_size_so_far = size;
			best = result;
		next:;

and this got converted into:

			sk_for_each(sk2, node, head)
				if (++size < best_size_so_far) {
					best_size_so_far = size;
					best = result;
				}

Which does something very very different from the original.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
This commit is contained in:
David Miller
2006-12-22 11:56:21 -08:00
committed by Chris Wright
parent 31ce2d6a3a
commit 3629bc2763
1 changed files with 8 additions and 5 deletions
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net/ipv4/udp.c
+8 -5
View File
@@ -167,11 +167,14 @@ int udp_get_port(struct sock *sk, unsigned short snum,
goto gotit;
}
size = 0;
sk_for_each(sk2, node, head)
if (++size < best_size_so_far) {
best_size_so_far = size;
best = result;
}
sk_for_each(sk2, node, head) {
if (++size >= best_size_so_far)
goto next;
}
best_size_so_far = size;
best = result;
next:
;
}
result = best;
for(i = 0; i < (1 << 16) / UDP_HTABLE_SIZE; i++, result += UDP_HTABLE_SIZE) {