Add hash support to link cache
Add hash support to link cache

This patch adds keygen function to link cache

Signed-off-by: Shrijeet Mukherjee <62b2e2e3d24633e33bb2cfda21ff188924e9f61e@cumulusnetworks.com>
Signed-off-by: Nolan Leake <2b78f1a11b050030c931d98cf25a8c2d3b85b913@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <d3f6ba90004ada8c36186a20548ed980b7e493d1@cumulusnetworks.com>
Reviewed-by: Wilson Kok <9937d6c4e279711f30d620c8f4a144fb654ea717@cumulusnetworks.com>
Signed-off-by: Thomas Graf <17c2d8920621522552b392f72d8fdb4d1e866b44@suug.ch>

vyos/libnl3,houstar/libnl,teto/libnl_old,teto/libnl_old,baloo/libnl,Distrotech/libnl,mshirley/libnl,cyclops8456/libnl3,karlhiramoto/libnl,Distrotech/libnl,greearb/libnl-ct,congwang/libnl,tklauser/libnl,congwang/libnl,baloo/libnl,cyclops8456/libnl3,teto/libnl_old,chitranshi/libnl,congwang/libnl,karlhiramoto/libnl,UnicronNL/libnl3,honsys/libnl,houstar/libnl,tgraf/libnl,mshirley/libnl,thom311/libnl,Distrotech/libnl,cyclops8456/libnl3,cfriedt/libnl,kolyshkin/libnl,UnicronNL/libnl3,dsahern/libnl,chitranshi/libnl,thom311/libnl,baloo/libnl,baloo/libnl,Distrotech/libnl,HolyShitMan/libnl-1,tklauser/libnl,tgraf/libnl,teto/libnl_old,greearb/libnl-ct,congwang/libnl,dsahern/libnl,karlhiramoto/libnl,tklauser/libnl,karlhiramoto/libnl,vyos/libnl3,UnicronNL/libnl3,claudelee/libnl,cfriedt/libnl,HolyShitMan/libnl-1,cfriedt/libnl,kolyshkin/libnl,chitranshi/libnl,vyos/libnl3,tgraf/libnl,dsahern/libnl,honsys/libnl,tklauser/libnl,houstar/libnl,dsahern/libnl,claudelee/libnl,mshirley/libnl,UnicronNL/libnl3,honsys/libnl,houstar/libnl,mshirley/libnl,claudelee/libnl,thom311/libnl,honsys/libnl,HolyShitMan/libnl-1,cfriedt/libnl,kolyshkin/libnl,HolyShitMan/libnl-1,claudelee/libnl,kolyshkin/libnl,greearb/libnl-ct,vyos/libnl3,tgraf/libnl,cyclops8456/libnl3,chitranshi/libnl