submit_arp() allocates struct lls_arp_req in the execution stack just so lls_req() can allocate a mailbox message and linearly copy struct lls_arp_req. Moreover, lls_req() is mostly a big switch statement for each type. If the allocation of the mailbox message is moved to submit_arp(), not only is the data copy going to be avoided, but it'll also simplify lls_req(). Repeating this

I want to know what's the parameter next to the IP in the nf_router (route.conf file) refer to ?

Background

ICMP messages are used by network devices, including routers, to send error messages and operational information indicating success or failure when communicating with another IP address. Examples include errors indicating when a requested service is not available or when a host or router could not be reached. We've

This is an optimization to reduce the time it takes to build/deploy YAStack.

Compilation of YAStack can be optimized by pre-compiling source code that does not depend on DPDK. This can help build the image faster since now only DPDK and dependent code will have to be compiled.