On Wed, May 27, 2015 at 11:46:03AM -0400, David Miller wrote: > From: Steffen Klassert <steffen.klass...@secunet.com> > Date: Wed, 27 May 2015 10:35:16 +0200 > > > We currently check if a socket is attached to a skb and do socket > > error notification in this case, otherwise we do PMTU discovery if > > the packet is too big. Looks like this socket check is not sufficient > > if the packet is already transmitted through a tunnel device. > > > > I wonder if we have something to know that a packet was already > > transmitted through a tunnel device. We could switch from socket > > notification to PMTU discovery in this case. > > Generally speaking, we should not be orphaning the socket as it > traverses through tunnels. > > In fact we have taken great pains to avoid doing this.
Yes, I'm aware of this. I don't want to orphan the socket, all I wanted to do is to change the way we notify about MTU changes. I.e. use icmpv6_send() instead of xfrm_local_error() if the packet traversed a tunnel, that's why I wondered whether we can know this. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
