On 02-Apr-20 1:51 PM, Venumadhav Josyula wrote:
Hi All,Idea is following - create lpm in one process where only rte_lpm and bare minimum is acessible. Addition into this table will also happen in this process context. - Now in the packet processing context based ip of packet the lookup will happen in the lpm created. Is above possible. Please task / Process in which lpm created or lpm entries added, does not do anything with respect to rte_eal. Any pointers, will really be appreciated. Cheers, Venu
It is certainly possible to do that in principle, but it is not possible with current implementation. The LPM library relies on rte_malloc() for initialization, and that in turn relies on EAL structures being initialized, and DPDK hugepage memory being available.
If your concern is specifically to not use DPDK-allocated hugepage memory but use one that your application controls, it is possible to not use built-in DPDK memory and lessen the impact of DPDK initialization on the system with a few tricks (run in --in-memory and --no-huge mode with a tiny amount of memory, and use external memory API to create data structures in a memory you control), but you can't avoid it entirely.
-- Thanks, Anatoly
