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ipv4: Don't create nh exeption when the device mtu is smaller than the reported pmtu
authorSteffen Klassert <steffen.klassert@secunet.com>
Sun, 7 Oct 2012 22:48:18 +0000 (22:48 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 8 Oct 2012 18:46:35 +0000 (14:46 -0400)
commit7f92d334ba19a0d8e96f8f8f092219553367d921
tree61974ee8b7c5b0428401e29836ce2cc1bbc9484etree | snapshot (tar.gz zip)
parentd851c12b60471188e15e5c8405b289073e8dd025commit | diff
ipv4: Don't create nh exeption when the device mtu is smaller than the reported pmtu

When a local tool like tracepath tries to send packets bigger than
the device mtu, we create a nh exeption and set the pmtu to device
mtu. The device mtu does not expire, so check if the device mtu is
smaller than the reported pmtu and don't crerate a nh exeption in
that case.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/route.c diff | blob | blame | history