[PATCH 05/10 net-next v3] drivers: net: drop ipv6_stub usage and use direct function calls

[PATCH 05/10 net-next v3] drivers: net: drop ipv6_stub usage and use direct function calls

[Fernando Fernandez Mancera]

As IPv6 is built-in only, the ipv6_stub infrastructure is no longer
necessary.

Convert all drivers currently utilizing ipv6_stub to make direct
function calls. The fallback functions introduced previously will
prevent linkage errors when CONFIG_IPV6 is disabled.

Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Tested-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Antonio Quartulli <antonio@openvpn.net>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
---
 drivers/infiniband/core/addr.c                  |  3 +--
 drivers/infiniband/sw/rxe/rxe_net.c             |  6 +++---
 .../ethernet/mellanox/mlx5/core/en/rep/neigh.c  | 12 ++++++++----
 .../net/ethernet/mellanox/mlx5/core/en/tc_tun.c |  3 +--
 .../mellanox/mlx5/core/en/tc_tun_encap.c        |  2 +-
 .../mellanox/mlx5/core/en_accel/ipsec.c         |  1 -
 .../net/ethernet/mellanox/mlx5/core/en_rep.c    |  1 -
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c |  1 -
 .../ethernet/mellanox/mlxsw/spectrum_router.c   |  9 +++++----
 .../net/ethernet/mellanox/mlxsw/spectrum_span.c |  3 ++-
 .../net/ethernet/netronome/nfp/flower/action.c  |  2 +-
 .../ethernet/netronome/nfp/flower/tunnel_conf.c |  9 ++++-----
 drivers/net/ethernet/sfc/tc_counters.c          |  2 +-
 drivers/net/ethernet/sfc/tc_encap_actions.c     |  5 ++---
 drivers/net/geneve.c                            |  1 -
 drivers/net/gtp.c                               |  2 +-
 drivers/net/ovpn/peer.c                         |  3 +--
 drivers/net/ovpn/udp.c                          |  3 +--
 drivers/net/usb/cdc_mbim.c                      | 17 +++++++++--------
 drivers/net/vrf.c                               |  3 ++-
 drivers/net/vxlan/vxlan_core.c                  | 11 +++++------
 drivers/net/vxlan/vxlan_multicast.c             |  6 ++----
 drivers/net/wireguard/socket.c                  |  3 +--
 drivers/net/wireless/intel/ipw2x00/ipw2100.c    |  2 +-
 net/bridge/br_arp_nd_proxy.c                    |  3 +--
 25 files changed, 53 insertions(+), 60 deletions(-)

diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 866746695712..48d4b06384ec 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -41,7 +41,6 @@
 #include <net/neighbour.h>
 #include <net/route.h>
 #include <net/netevent.h>
-#include <net/ipv6_stubs.h>
 #include <net/ip6_route.h>
 #include <rdma/ib_addr.h>
 #include <rdma/ib_cache.h>
@@ -411,7 +410,7 @@ static int addr6_resolve(struct sockaddr *src_sock,
 	fl6.saddr = src_in->sin6_addr;
 	fl6.flowi6_oif = addr->bound_dev_if;
 
-	dst = ipv6_stub->ipv6_dst_lookup_flow(addr->net, NULL, &fl6, NULL);
+	dst = ip6_dst_lookup_flow(addr->net, NULL, &fl6, NULL);
 	if (IS_ERR(dst))
 		return PTR_ERR(dst);
 
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 0bd0902b11f7..cbc646a30003 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -138,9 +138,9 @@ static struct dst_entry *rxe_find_route6(struct rxe_qp *qp,
 	memcpy(&fl6.daddr, daddr, sizeof(*daddr));
 	fl6.flowi6_proto = IPPROTO_UDP;
 
-	ndst = ipv6_stub->ipv6_dst_lookup_flow(sock_net(recv_sockets.sk6->sk),
-					       recv_sockets.sk6->sk, &fl6,
-					       NULL);
+	ndst = ip6_dst_lookup_flow(sock_net(recv_sockets.sk6->sk),
+				   recv_sockets.sk6->sk, &fl6,
+				   NULL);
 	if (IS_ERR(ndst)) {
 		rxe_dbg_qp(qp, "no route to %pI6\n", daddr);
 		return NULL;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c
index d220b045b331..56930bad94eb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c
@@ -10,6 +10,7 @@
 #include <linux/notifier.h>
 #include <net/netevent.h>
 #include <net/arp.h>
+#include <net/ndisc.h>
 #include "neigh.h"
 #include "tc.h"
 #include "en_rep.h"
@@ -18,8 +19,10 @@
 
 static unsigned long mlx5e_rep_ipv6_interval(void)
 {
-	if (IS_ENABLED(CONFIG_IPV6) && ipv6_stub->nd_tbl)
-		return NEIGH_VAR(&ipv6_stub->nd_tbl->parms, DELAY_PROBE_TIME);
+	struct neigh_table *tbl = ipv6_get_nd_tbl();
+
+	if (IS_ENABLED(CONFIG_IPV6) && ipv6_mod_enabled())
+		return NEIGH_VAR(&tbl->parms, DELAY_PROBE_TIME);
 
 	return ~0UL;
 }
@@ -217,7 +220,7 @@ static int mlx5e_rep_netevent_event(struct notifier_block *nb,
 	case NETEVENT_NEIGH_UPDATE:
 		n = ptr;
 #if IS_ENABLED(CONFIG_IPV6)
-		if (n->tbl != ipv6_stub->nd_tbl && n->tbl != &arp_tbl)
+		if (n->tbl != ipv6_get_nd_tbl() && n->tbl != &arp_tbl)
 #else
 		if (n->tbl != &arp_tbl)
 #endif
@@ -238,7 +241,8 @@ static int mlx5e_rep_netevent_event(struct notifier_block *nb,
 		 * done per device delay prob time parameter.
 		 */
 #if IS_ENABLED(CONFIG_IPV6)
-		if (!p->dev || (p->tbl != ipv6_stub->nd_tbl && p->tbl != &arp_tbl))
+		if (!p->dev ||
+		    (p->tbl != ipv6_get_nd_tbl() && p->tbl != &arp_tbl))
 #else
 		if (!p->dev || p->tbl != &arp_tbl)
 #endif
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
index a14f216048cd..de74dbfe7b20 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -453,8 +453,7 @@ static int mlx5e_route_lookup_ipv6_get(struct mlx5e_priv *priv,
 
 	if (tunnel && tunnel->get_remote_ifindex)
 		attr->fl.fl6.flowi6_oif = tunnel->get_remote_ifindex(dev);
-	dst = ipv6_stub->ipv6_dst_lookup_flow(dev_net(dev), NULL, &attr->fl.fl6,
-					      NULL);
+	dst = ip6_dst_lookup_flow(dev_net(dev), NULL, &attr->fl.fl6, NULL);
 	if (IS_ERR(dst))
 		return PTR_ERR(dst);
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
index bfd401bee9e8..ce2a27124642 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
@@ -402,7 +402,7 @@ void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
 		tbl = &arp_tbl;
 #if IS_ENABLED(CONFIG_IPV6)
 	else if (m_neigh->family == AF_INET6)
-		tbl = ipv6_stub->nd_tbl;
+		tbl = ipv6_get_nd_tbl();
 #endif
 	else
 		return;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 64e13747084e..a52e12c3c95a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -36,7 +36,6 @@
 #include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <net/netevent.h>
-#include <net/ipv6_stubs.h>
 
 #include "en.h"
 #include "eswitch.h"
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 1db4ecb2356f..5ec5cae8d229 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -38,7 +38,6 @@
 #include <net/pkt_cls.h>
 #include <net/act_api.h>
 #include <net/devlink.h>
-#include <net/ipv6_stubs.h>
 
 #include "eswitch.h"
 #include "en.h"
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 1434b65d4746..4e4ee1d520ce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -40,7 +40,6 @@
 #include <linux/refcount.h>
 #include <linux/completion.h>
 #include <net/arp.h>
-#include <net/ipv6_stubs.h>
 #include <net/bareudp.h>
 #include <net/bonding.h>
 #include <net/dst_metadata.h>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 7bd87d0547d8..8531216f6389 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -2458,7 +2458,7 @@ static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp,
 	}
 
 	dev = mlxsw_sp_rif_dev(mlxsw_sp->router->rifs[rif]);
-	n = neigh_lookup(&nd_tbl, &dip, dev);
+	n = neigh_lookup(ipv6_get_nd_tbl(), &dip, dev);
 	if (!n)
 		return;
 
@@ -3022,7 +3022,8 @@ static int mlxsw_sp_neigh_rif_made_sync(struct mlxsw_sp *mlxsw_sp,
 		goto err_arp;
 
 #if IS_ENABLED(CONFIG_IPV6)
-	neigh_for_each(&nd_tbl, mlxsw_sp_neigh_rif_made_sync_each, &rms);
+	neigh_for_each(ipv6_get_nd_tbl(),
+		       mlxsw_sp_neigh_rif_made_sync_each, &rms);
 #endif
 	if (rms.err)
 		goto err_nd;
@@ -5124,7 +5125,7 @@ mlxsw_sp_nexthop_obj_init(struct mlxsw_sp *mlxsw_sp,
 	case AF_INET6:
 		memcpy(&nh->gw_addr, &nh_obj->ipv6, sizeof(nh_obj->ipv6));
 #if IS_ENABLED(CONFIG_IPV6)
-		nh->neigh_tbl = &nd_tbl;
+		nh->neigh_tbl = ipv6_get_nd_tbl();
 #endif
 		break;
 	}
@@ -6980,7 +6981,7 @@ static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp,
 	nh->nh_weight = rt->fib6_nh->fib_nh_weight;
 	memcpy(&nh->gw_addr, &rt->fib6_nh->fib_nh_gw6, sizeof(nh->gw_addr));
 #if IS_ENABLED(CONFIG_IPV6)
-	nh->neigh_tbl = &nd_tbl;
+	nh->neigh_tbl = ipv6_get_nd_tbl();
 #endif
 
 	err = mlxsw_sp_nexthop_counter_enable(mlxsw_sp, nh);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
index ae63d549b542..f05ccf3db876 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
@@ -576,7 +576,8 @@ mlxsw_sp_span_entry_gretap6_parms(struct mlxsw_sp *mlxsw_sp,
 	l3edev = mlxsw_sp_span_gretap6_route(to_dev, &saddr.addr6, &gw.addr6);
 	return mlxsw_sp_span_entry_tunnel_parms_common(l3edev, saddr, daddr, gw,
 						       tparm.hop_limit,
-						       &nd_tbl, sparmsp);
+						       ipv6_get_nd_tbl(),
+						       sparmsp);
 }
 
 static int
diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c
index aca2a7417af3..ae2f8b31adfb 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/action.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/action.c
@@ -470,7 +470,7 @@ nfp_fl_set_tun(struct nfp_app *app, struct nfp_fl_set_tun *set_tun,
 
 		flow.daddr = ip_tun->key.u.ipv6.dst;
 		flow.flowi4_proto = IPPROTO_UDP;
-		dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &flow, NULL);
+		dst = ip6_dst_lookup_flow(net, NULL, &flow, NULL);
 		if (!IS_ERR(dst)) {
 			set_tun->ttl = ip6_dst_hoplimit(dst);
 			dst_release(dst);
diff --git a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
index 0cef0e2b85d0..053265e135f6 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
@@ -277,7 +277,7 @@ void nfp_tunnel_keep_alive_v6(struct nfp_app *app, struct sk_buff *skb)
 		if (!netdev)
 			continue;
 
-		n = neigh_lookup(&nd_tbl, ipv6_add, netdev);
+		n = neigh_lookup(ipv6_get_nd_tbl(), ipv6_add, netdev);
 		if (!n)
 			continue;
 
@@ -650,7 +650,7 @@ static void nfp_tun_neigh_update(struct work_struct *work)
 		flow6.daddr = *(struct in6_addr *)n->primary_key;
 		if (!neigh_invalid) {
 			struct dst_entry *dst;
-			/* Use ipv6_dst_lookup_flow to populate flow6->saddr
+			/* Use ip6_dst_lookup_flow to populate flow6->saddr
 			 * and other fields. This information is only needed
 			 * for new entries, lookup can be skipped when an entry
 			 * gets invalidated - as only the daddr is needed for
@@ -730,7 +730,7 @@ nfp_tun_neigh_event_handler(struct notifier_block *nb, unsigned long event,
 		return NOTIFY_DONE;
 	}
 #if IS_ENABLED(CONFIG_IPV6)
-	if (n->tbl != ipv6_stub->nd_tbl && n->tbl != &arp_tbl)
+	if (n->tbl != ipv6_get_nd_tbl() && n->tbl != &arp_tbl)
 #else
 	if (n->tbl != &arp_tbl)
 #endif
@@ -815,8 +815,7 @@ void nfp_tunnel_request_route_v6(struct nfp_app *app, struct sk_buff *skb)
 	flow.flowi6_proto = IPPROTO_UDP;
 
 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
-	dst = ipv6_stub->ipv6_dst_lookup_flow(dev_net(netdev), NULL, &flow,
-					      NULL);
+	dst = ip6_dst_lookup_flow(dev_net(netdev), NULL, &flow, NULL);
 	if (IS_ERR(dst))
 		goto fail_rcu_unlock;
 #else
diff --git a/drivers/net/ethernet/sfc/tc_counters.c b/drivers/net/ethernet/sfc/tc_counters.c
index d168282f30bf..d8a5f9fd1007 100644
--- a/drivers/net/ethernet/sfc/tc_counters.c
+++ b/drivers/net/ethernet/sfc/tc_counters.c
@@ -112,7 +112,7 @@ static void efx_tc_counter_work(struct work_struct *work)
 					 encap->neigh->egdev);
 		else
 #if IS_ENABLED(CONFIG_IPV6)
-			n = neigh_lookup(ipv6_stub->nd_tbl,
+			n = neigh_lookup(ipv6_get_nd_tbl(),
 					 &encap->neigh->dst_ip6,
 					 encap->neigh->egdev);
 #else
diff --git a/drivers/net/ethernet/sfc/tc_encap_actions.c b/drivers/net/ethernet/sfc/tc_encap_actions.c
index da35705cc5e1..63d8f794b869 100644
--- a/drivers/net/ethernet/sfc/tc_encap_actions.c
+++ b/drivers/net/ethernet/sfc/tc_encap_actions.c
@@ -149,8 +149,7 @@ static int efx_bind_neigh(struct efx_nic *efx,
 #if IS_ENABLED(CONFIG_IPV6)
 			struct dst_entry *dst;
 
-			dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &flow6,
-							      NULL);
+			dst = ip6_dst_lookup_flow(net, NULL, &flow6, NULL);
 			rc = PTR_ERR_OR_ZERO(dst);
 			if (rc) {
 				NL_SET_ERR_MSG_MOD(extack, "Failed to lookup route for IPv6 encap");
@@ -531,7 +530,7 @@ static int efx_neigh_event(struct efx_nic *efx, struct neighbour *n)
 	if (n->tbl == &arp_tbl) {
 		keysize = sizeof(keys.dst_ip);
 #if IS_ENABLED(CONFIG_IPV6)
-	} else if (n->tbl == ipv6_stub->nd_tbl) {
+	} else if (n->tbl == ipv6_get_nd_tbl()) {
 		ipv6 = true;
 		keysize = sizeof(keys.dst_ip6);
 #endif
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 01cdd06102e0..c6563367d382 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <linux/etherdevice.h>
 #include <linux/hash.h>
-#include <net/ipv6_stubs.h>
 #include <net/dst_metadata.h>
 #include <net/gro_cells.h>
 #include <net/rtnetlink.h>
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index e8949f556209..70b9e58b9b78 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -374,7 +374,7 @@ static struct rt6_info *ip6_route_output_gtp(struct net *net,
 	fl6->saddr		= *saddr;
 	fl6->flowi6_proto	= sk->sk_protocol;
 
-	dst = ipv6_stub->ipv6_dst_lookup_flow(net, sk, fl6, NULL);
+	dst = ip6_dst_lookup_flow(net, sk, fl6, NULL);
 	if (IS_ERR(dst))
 		return ERR_PTR(-ENETUNREACH);
 
diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c
index 3716a1d82801..6dd11c71204b 100644
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -821,8 +821,7 @@ static struct in6_addr ovpn_nexthop_from_rt6(struct ovpn_priv *ovpn,
 		.daddr = dest,
 	};
 
-	entry = ipv6_stub->ipv6_dst_lookup_flow(dev_net(ovpn->dev), NULL, &fl,
-						NULL);
+	entry = ip6_dst_lookup_flow(dev_net(ovpn->dev), NULL, &fl, NULL);
 	if (IS_ERR(entry)) {
 		net_dbg_ratelimited("%s: no route to host %pI6c\n",
 				    netdev_name(ovpn->dev), &dest);
diff --git a/drivers/net/ovpn/udp.c b/drivers/net/ovpn/udp.c
index 272b535ecaad..059e896b4a2f 100644
--- a/drivers/net/ovpn/udp.c
+++ b/drivers/net/ovpn/udp.c
@@ -14,7 +14,6 @@
 #include <net/addrconf.h>
 #include <net/dst_cache.h>
 #include <net/route.h>
-#include <net/ipv6_stubs.h>
 #include <net/transp_v6.h>
 #include <net/udp.h>
 #include <net/udp_tunnel.h>
@@ -251,7 +250,7 @@ static int ovpn_udp6_output(struct ovpn_peer *peer, struct ovpn_bind *bind,
 		dst_cache_reset(cache);
 	}
 
-	dst = ipv6_stub->ipv6_dst_lookup_flow(sock_net(sk), sk, &fl, NULL);
+	dst = ip6_dst_lookup_flow(sock_net(sk), sk, &fl, NULL);
 	if (IS_ERR(dst)) {
 		ret = PTR_ERR(dst);
 		net_dbg_ratelimited("%s: no route to host %pISpc: %d\n",
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index dbf01210b0e7..877fb0ed7d3d 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -20,7 +20,6 @@
 #include <linux/usb/cdc_ncm.h>
 #include <net/ipv6.h>
 #include <net/addrconf.h>
-#include <net/ipv6_stubs.h>
 #include <net/ndisc.h>
 
 /* alternative VLAN for IP session 0 if not untagged */
@@ -302,6 +301,7 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb
 	return NULL;
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
 /* Some devices are known to send Neighbor Solicitation messages and
  * require Neighbor Advertisement replies.  The IPv6 core will not
  * respond since IFF_NOARP is set, so we must handle them ourselves.
@@ -342,12 +342,11 @@ static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci)
 	is_router = !!READ_ONCE(in6_dev->cnf.forwarding);
 	in6_dev_put(in6_dev);
 
-	/* ipv6_stub != NULL if in6_dev_get returned an inet6_dev */
-	ipv6_stub->ndisc_send_na(netdev, &iph->saddr, &msg->target,
-				 is_router /* router */,
-				 true /* solicited */,
-				 false /* override */,
-				 true /* inc_opt */);
+	ndisc_send_na(netdev, &iph->saddr, &msg->target,
+		      is_router /* router */,
+		      true /* solicited */,
+		      false /* override */,
+		      true /* inc_opt */);
 out:
 	dev_put(netdev);
 }
@@ -362,7 +361,7 @@ static bool is_neigh_solicit(u8 *buf, size_t len)
 		msg->icmph.icmp6_code == 0 &&
 		msg->icmph.icmp6_type == NDISC_NEIGHBOUR_SOLICITATION);
 }
-
+#endif /* IPV6 */
 
 static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_t len, u16 tci)
 {
@@ -378,8 +377,10 @@ static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_
 			proto = htons(ETH_P_IP);
 			break;
 		case 0x60:
+#if IS_ENABLED(CONFIG_IPV6)
 			if (is_neigh_solicit(buf, len))
 				do_neigh_solicit(dev, buf, tci);
+#endif
 			proto = htons(ETH_P_IPV6);
 			break;
 		default:
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index 8c009bcaa8e7..68edb47cc4eb 100644
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -616,7 +616,8 @@ static int vrf_finish_output6(struct net *net, struct sock *sk,
 	nexthop = rt6_nexthop(dst_rt6_info(dst), &ipv6_hdr(skb)->daddr);
 	neigh = __ipv6_neigh_lookup_noref(dst->dev, nexthop);
 	if (unlikely(!neigh))
-		neigh = __neigh_create(&nd_tbl, nexthop, dst->dev, false);
+		neigh = __neigh_create(ipv6_get_nd_tbl(), nexthop,
+				       dst->dev, false);
 	if (!IS_ERR(neigh)) {
 		sock_confirm_neigh(skb, neigh);
 		ret = neigh_output(neigh, skb, false);
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 17c941aac32d..4ab94dfe0d12 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -19,7 +19,6 @@
 #include <net/arp.h>
 #include <net/ndisc.h>
 #include <net/gro.h>
-#include <net/ipv6_stubs.h>
 #include <net/ip.h>
 #include <net/icmp.h>
 #include <net/rtnetlink.h>
@@ -2045,7 +2044,7 @@ static int neigh_reduce(struct net_device *dev, struct sk_buff *skb, __be32 vni)
 	    ipv6_addr_is_multicast(&msg->target))
 		goto out;
 
-	n = neigh_lookup(ipv6_stub->nd_tbl, &msg->target, dev);
+	n = neigh_lookup(ipv6_get_nd_tbl(), &msg->target, dev);
 
 	if (n) {
 		struct vxlan_rdst *rdst = NULL;
@@ -2130,15 +2129,15 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb)
 	{
 		struct ipv6hdr *pip6;
 
-		/* check if nd_tbl is not initiliazed due to
-		 * ipv6.disable=1 set during boot
+		/* check if ipv6.disable=1 set during boot was set
+		 * during booting so nd_tbl is not initialized
 		 */
-		if (!ipv6_stub->nd_tbl)
+		if (!ipv6_mod_enabled())
 			return false;
 		if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
 			return false;
 		pip6 = ipv6_hdr(skb);
-		n = neigh_lookup(ipv6_stub->nd_tbl, &pip6->daddr, dev);
+		n = neigh_lookup(ipv6_get_nd_tbl(), &pip6->daddr, dev);
 		if (!n && (vxlan->cfg.flags & VXLAN_F_L3MISS)) {
 			union vxlan_addr ipa = {
 				.sin6.sin6_addr = pip6->daddr,
diff --git a/drivers/net/vxlan/vxlan_multicast.c b/drivers/net/vxlan/vxlan_multicast.c
index a7f2d67dc61b..b0e80bca855c 100644
--- a/drivers/net/vxlan/vxlan_multicast.c
+++ b/drivers/net/vxlan/vxlan_multicast.c
@@ -39,8 +39,7 @@ int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
 
 		sk = sock6->sock->sk;
 		lock_sock(sk);
-		ret = ipv6_stub->ipv6_sock_mc_join(sk, ifindex,
-						   &ip->sin6.sin6_addr);
+		ret = ipv6_sock_mc_join(sk, ifindex, &ip->sin6.sin6_addr);
 		release_sock(sk);
 #endif
 	}
@@ -73,8 +72,7 @@ int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
 
 		sk = sock6->sock->sk;
 		lock_sock(sk);
-		ret = ipv6_stub->ipv6_sock_mc_drop(sk, ifindex,
-						   &ip->sin6.sin6_addr);
+		ret = ipv6_sock_mc_drop(sk, ifindex, &ip->sin6.sin6_addr);
 		release_sock(sk);
 #endif
 	}
diff --git a/drivers/net/wireguard/socket.c b/drivers/net/wireguard/socket.c
index 253488f8c00f..c362c78d908e 100644
--- a/drivers/net/wireguard/socket.c
+++ b/drivers/net/wireguard/socket.c
@@ -136,8 +136,7 @@ static int send6(struct wg_device *wg, struct sk_buff *skb,
 			if (cache)
 				dst_cache_reset(cache);
 		}
-		dst = ipv6_stub->ipv6_dst_lookup_flow(sock_net(sock), sock, &fl,
-						      NULL);
+		dst = ip6_dst_lookup_flow(sock_net(sock), sock, &fl, NULL);
 		if (IS_ERR(dst)) {
 			ret = PTR_ERR(dst);
 			net_dbg_ratelimited("%s: No route to %pISpfsc, error %d\n",
diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
index 248a051da52d..c11428485dcc 100644
--- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
@@ -4838,7 +4838,7 @@ static int ipw2100_system_config(struct ipw2100_priv *priv, int batch_mode)
 
 /* If IPv6 is configured in the kernel then we don't want to filter out all
  * of the multicast packets as IPv6 needs some. */
-#if !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
+#if !defined(CONFIG_IPV6)
 	cmd.host_command = ADD_MULTICAST;
 	cmd.host_command_sequence = 0;
 	cmd.host_command_length = 0;
diff --git a/net/bridge/br_arp_nd_proxy.c b/net/bridge/br_arp_nd_proxy.c
index 1e2b51769eec..494bf69a3017 100644
--- a/net/bridge/br_arp_nd_proxy.c
+++ b/net/bridge/br_arp_nd_proxy.c
@@ -17,7 +17,6 @@
 #include <linux/if_vlan.h>
 #include <linux/inetdevice.h>
 #include <net/addrconf.h>
-#include <net/ipv6_stubs.h>
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ip6_checksum.h>
 #endif
@@ -455,7 +454,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 		return;
 	}
 
-	n = neigh_lookup(ipv6_stub->nd_tbl, &msg->target, vlandev);
+	n = neigh_lookup(ipv6_get_nd_tbl(), &msg->target, vlandev);
 	if (n) {
 		struct net_bridge_fdb_entry *f;
 
-- 
2.53.0