vxlan: vxlan_core: Support FDB flushing by source VNI

Add support for flush VXLAN FDB entries by source VNI.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 0aeb973e3da73a775f2847ff9e7cc080e9a0bb30..8214db56989d21d8abd40601cbb998025d3d6373 100644 (file)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -3028,6 +3028,7 @@ struct vxlan_fdb_flush_desc {
        unsigned long                   state_mask;
        unsigned long                   flags;
        unsigned long                   flags_mask;
+       __be32                          src_vni;
 };
 
 static bool vxlan_fdb_is_default_entry(const struct vxlan_fdb *f,
@@ -3049,6 +3050,9 @@ static bool vxlan_fdb_flush_matches(const struct vxlan_fdb *f,
        if (desc->ignore_default_entry && vxlan_fdb_is_default_entry(f, vxlan))
                return false;
 
+       if (desc->src_vni && f->vni != desc->src_vni)
+               return false;
+
        return true;
 }
 
@@ -3076,6 +3080,7 @@ static void vxlan_flush(struct vxlan_dev *vxlan,
 }
 
 static const struct nla_policy vxlan_del_bulk_policy[NDA_MAX + 1] = {
+       [NDA_SRC_VNI]   = { .type = NLA_U32 },
        [NDA_NDM_STATE_MASK]    = { .type = NLA_U16 },
        [NDA_NDM_FLAGS_MASK]    = { .type = NLA_U8 },
 };
@@ -3120,6 +3125,9 @@ static int vxlan_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev,
        if (tb[NDA_NDM_FLAGS_MASK])
                desc.flags_mask = nla_get_u8(tb[NDA_NDM_FLAGS_MASK]);
 
+       if (tb[NDA_SRC_VNI])
+               desc.src_vni = cpu_to_be32(nla_get_u32(tb[NDA_SRC_VNI]));
+
        vxlan_flush(vxlan, &desc);
 
        return 0;