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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:54:39 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:54:39 -0700
commit804b908adfcffe3831621acb6c8a776585983d2a (patch)
tree9664d4395ae8e590e50c568225ea88435383ed99 /net/ipv4/udp.c
parent1b3e4c706c19dec10b11dac1b23071e3e4b262ad (diff)
parentce0e32e65f70337e0732c97499b643205fa8ea31 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Fix possible dev_deactivate race condition [INET]: Justification for local port range robustness. [PACKET]: Kill unused pg_vec_endpage() function [NET]: QoS/Sched as menuconfig [NET]: Fix bug in sk_filter race cures. [PATCH] mac80211: make ieee802_11_parse_elems return void
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cb9fc58efb2..35d2b0e9e10 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -147,13 +147,14 @@ int __udp_lib_get_port(struct sock *sk, unsigned short snum,
write_lock_bh(&udp_hash_lock);
if (!snum) {
- int i, low, high;
+ int i, low, high, remaining;
unsigned rover, best, best_size_so_far;
inet_get_local_port_range(&low, &high);
+ remaining = (high - low) + 1;
best_size_so_far = UINT_MAX;
- best = rover = net_random() % (high - low) + low;
+ best = rover = net_random() % remaining + low;
/* 1st pass: look for empty (or shortest) hash chain */
for (i = 0; i < UDP_HTABLE_SIZE; i++) {