Add a new helper print_cache_nexthop replacing print_nexthop which can
update the nexthop cache if the process_cache argument is true. It is
used when monitoring netlink messages to keep the nexthop cache up to
date with nexthop changes happening. For the old callers and anyone
who's just dumping nexthops its _nocache version is used which is a
wrapper for print_cache_nexthop.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Add a helper which looks for a nexthop in the cache and if not found
reads the entry from the kernel and caches it. Finally the entry is
printed.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Add a static nexthop cache in a hash with 1024 buckets and helpers to
manage it (link, unlink, find, add nexthop, del nexthop). Adding new
nexthops is done by creating a new rtnl handle and using it to retrieve
the nexthop so the helper is safe to use while already reading a
response (i.e. using the global rth).
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Add a structure which describes a nexthop, it will be later used to
parse, print and cache nexthops.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Add a structure which describes a resilient nexthop group. It will be
later used for parsing.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Nikolay Aleksandrov