From: David Ahern <dsah...@gmail.com> Date: Wed, 23 Sep 2020 08:36:50 -0600
> On 9/23/20 2:46 AM, Eric Dumazet wrote: >> Apparently route mtu are capped to 65520, not sure where it is done exactly >> IP_MAX_MTU being 65535) > > ip_metrics_convert seems to be the place" > if (type == RTAX_MTU && val > 65535 - 15) > val = 65535 - 15; > > going back through the code moves, and it was added by Dave with > 710ab6c03122c At the time of that commit IP_MAX_MTU only existed in net/ipv4/route.c and it's value was 0xFFF0. So I didn't add anything :-) Just moving stuff around.
