-stable review patch. If anyone has any objections, please let us know.
------------------
From: David Miller <[email protected]>
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 <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
net/ipv4/udp.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
--- linux-2.6.19.1.orig/net/ipv4/udp.c
+++ linux-2.6.19.1/net/ipv4/udp.c
@@ -167,11 +167,14 @@ int udp_get_port(struct sock *sk, unsign
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) {
--
-
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