On 05/01/2022 16:06, D. Wythe wrote: > LGTM. Fallback makes the restrictions on SMC dangling > connections more meaningful to me, compared to dropping them. > > Overall, i see there are two scenario. > > 1. Drop the overflow connections limited by userspace application > accept. > > 2. Fallback the overflow connections limited by the heavy process of > current SMC handshake. ( We can also control its behavior through > sysctl.) > I vote for (2) which makes the behavior from user space applications point of view more like TCP. One comment to sysctl: our current approach is to add new switches to the existing netlink interface which can be used with the smc-tools package (or own implementations of course). Is this prereq problematic in your environment? We tried to avoid more sysctls and the netlink interface keeps use more flexible.
