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authorStephen Hemminger <shemminger@linux-foundation.org>2007-10-10 17:30:46 -0700
committerDavid S. Miller <davem@davemloft.net>2007-10-10 17:30:46 -0700
commit227b60f5102cda4e4ab792b526a59c8cb20cd9f8 (patch)
tree2c9e372601ba794894833b0618bc531a9f5d57c4 /arch/powerpc
parent06393009000779b00a558fd2f280882cc7dc2008 (diff)
[INET]: local port range robustness
Expansion of original idea from Denis V. Lunev <den@openvz.org> Add robustness and locking to the local_port_range sysctl. 1. Enforce that low < high when setting. 2. Use seqlock to ensure atomic update. The locking might seem like overkill, but there are cases where sysadmin might want to change value in the middle of a DoS attack. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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