summaryrefslogtreecommitdiff
path: root/virt/kvm/Kconfig
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2012-06-28 03:59:11 -0700
committerDavid S. Miller <davem@davemloft.net>2012-06-28 03:59:11 -0700
commit35ebf65e851c6d9731abc6362b189858eb59f4d3 (patch)
tree2e78c2c81bc72aeeb172484996cdff268f0111a2 /virt/kvm/Kconfig
parent70e7341673a47fb1525cfc7d6651cc98b5348928 (diff)
ipv4: Create and use fib_compute_spec_dst() helper.
The specific destination is the host we direct unicast replies to. Usually this is the original packet source address, but if we are responding to a multicast or broadcast packet we have to use something different. Specifically we must use the source address we would use if we were to send a packet to the unicast source of the original packet. The routing cache precomputes this value, but we want to remove that precomputation because it creates a hard dependency on the expensive rpfilter source address validation which we'd like to make cheaper. There are only three places where this matters: 1) ICMP replies. 2) pktinfo CMSG 3) IP options Now there will be no real users of rt->rt_spec_dst and we can simply remove it altogether. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'virt/kvm/Kconfig')
0 files changed, 0 insertions, 0 deletions