diff options
| author | Petr Machata <petrm@nvidia.com> | 2021-03-11 19:03:14 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-11 16:12:59 -0800 |
| commit | 90e1a9e21326887fe0aef6c25ad36464953a961e (patch) | |
| tree | 66540872b44b9ded00cfecaff857fe9c91fa4a95 /net/ipv4/nexthop.c | |
| parent | 96a856256a43b88202f2ac8933092940146102ed (diff) | |
nexthop: Add a dedicated flag for multipath next-hop groups
With the introduction of resilient nexthop groups, there will be two types
of multipath groups: the current hash-threshold "mpath" ones, and resilient
groups. Both are multipath, but to determine the fact, the system needs to
consider two flags. This might prove costly in the datapath. Therefore,
introduce a new flag, that should be set for next-hop groups that have more
than one nexthop, and should be considered multipath.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/nexthop.c')
| -rw-r--r-- | net/ipv4/nexthop.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index 69c8b50a936e..56c54d0fbacc 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -967,6 +967,7 @@ static void remove_nh_grp_entry(struct net *net, struct nh_grp_entry *nhge, } newg->has_v4 = false; + newg->is_multipath = nhg->is_multipath; newg->mpath = nhg->mpath; newg->fdb_nh = nhg->fdb_nh; newg->num_nh = nhg->num_nh; @@ -1488,8 +1489,10 @@ static struct nexthop *nexthop_create_group(struct net *net, nhg->nh_entries[i].nh_parent = nh; } - if (cfg->nh_grp_type == NEXTHOP_GRP_TYPE_MPATH) + if (cfg->nh_grp_type == NEXTHOP_GRP_TYPE_MPATH) { nhg->mpath = 1; + nhg->is_multipath = true; + } WARN_ON_ONCE(nhg->mpath != 1); |