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vxlan: vxlan_core: Support FDB flushing by nexthop ID

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Add support for flush VXLAN FDB entries by nexthop ID.

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>
This commit is contained in:
Amit Cohen 2023-10-09 13:06:13 +03:00 committed by David S. Miller
parent a0f89d5e68
commit 36c111233b
1 changed files with 15 additions and 0 deletions
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15
drivers/net/vxlan/vxlan_core.c
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@ -3029,6 +3029,7 @@ struct vxlan_fdb_flush_desc {
unsigned long flags;
unsigned long flags_mask;
__be32 src_vni;
u32 nhid;
};
static bool vxlan_fdb_is_default_entry(const struct vxlan_fdb *f,
@ -3037,6 +3038,13 @@ static bool vxlan_fdb_is_default_entry(const struct vxlan_fdb *f,
return is_zero_ether_addr(f->eth_addr) && f->vni == vxlan->cfg.vni;
}
static bool vxlan_fdb_nhid_matches(const struct vxlan_fdb *f, u32 nhid)
{
struct nexthop *nh = rtnl_dereference(f->nh);
return nh && nh->id == nhid;
}
static bool vxlan_fdb_flush_matches(const struct vxlan_fdb *f,
const struct vxlan_dev *vxlan,
const struct vxlan_fdb_flush_desc *desc)
@ -3053,6 +3061,9 @@ static bool vxlan_fdb_flush_matches(const struct vxlan_fdb *f,
if (desc->src_vni && f->vni != desc->src_vni)
return false;
if (desc->nhid && !vxlan_fdb_nhid_matches(f, desc->nhid))
return false;
return true;
}
@ -3081,6 +3092,7 @@ 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_NH_ID] = { .type = NLA_U32 },
[NDA_NDM_STATE_MASK] = { .type = NLA_U16 },
[NDA_NDM_FLAGS_MASK] = { .type = NLA_U8 },
};
@ -3128,6 +3140,9 @@ static int vxlan_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev,
if (tb[NDA_SRC_VNI])
desc.src_vni = cpu_to_be32(nla_get_u32(tb[NDA_SRC_VNI]));
if (tb[NDA_NH_ID])
desc.nhid = nla_get_u32(tb[NDA_NH_ID]);
vxlan_flush(vxlan, &desc);
return 0;