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

Convert remaining ipv6_stub users 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 <[email protected]>
---
v2: no changes
---
 include/net/udp_tunnel.h      | 2 +-
 net/ieee802154/6lowpan/tx.c   | 2 +-
 net/mpls/af_mpls.c            | 3 +--
 net/openvswitch/actions.c     | 3 ++-
 net/sched/sch_frag.c          | 4 ++--
 net/tipc/udp_media.c          | 9 +++------
 net/xfrm/espintcp.c           | 5 +----
 net/xfrm/xfrm_nat_keepalive.c | 4 ++--
 net/xfrm/xfrm_output.c        | 3 +--
 9 files changed, 14 insertions(+), 21 deletions(-)

diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index d9c6d04bb3b5..277f1ce1c02d 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -230,7 +230,7 @@ static inline void udp_tunnel_encap_enable(struct sock *sk)
 
 #if IS_ENABLED(CONFIG_IPV6)
        if (READ_ONCE(sk->sk_family) == PF_INET6)
-               ipv6_stub->udpv6_encap_enable();
+               udpv6_encap_enable();
 #endif
        udp_encap_enable();
 }
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c
index 0c07662b44c0..69ec02386aaa 100644
--- a/net/ieee802154/6lowpan/tx.c
+++ b/net/ieee802154/6lowpan/tx.c
@@ -59,7 +59,7 @@ int lowpan_header_create(struct sk_buff *skb, struct 
net_device *ldev,
        } else {
                __le16 short_addr = cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC);
 
-               n = neigh_lookup(&nd_tbl, &hdr->daddr, ldev);
+               n = neigh_lookup(ipv6_get_nd_tbl(), &hdr->daddr, ldev);
                if (n) {
                        llneigh = lowpan_802154_neigh(neighbour_priv(n));
                        read_lock_bh(&n->lock);
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index ae85a7654b1f..8b4c0b7d55a2 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -24,7 +24,6 @@
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ipv6.h>
 #endif
-#include <net/ipv6_stubs.h>
 #include <net/rtnh.h>
 #include "internal.h"
 
@@ -642,7 +641,7 @@ static struct net_device *inet6_fib_lookup_dev(struct net 
*net,
 
        memset(&fl6, 0, sizeof(fl6));
        memcpy(&fl6.daddr, addr, sizeof(struct in6_addr));
-       dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &fl6, NULL);
+       dst = ip6_dst_lookup_flow(net, NULL, &fl6, NULL);
        if (IS_ERR(dst))
                return ERR_CAST(dst);
 
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 792ca44a461d..140388a18ae0 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -21,6 +21,7 @@
 #include <net/ip.h>
 #include <net/ipv6.h>
 #include <net/ip6_fib.h>
+#include <net/ip6_route.h>
 #include <net/checksum.h>
 #include <net/dsfield.h>
 #include <net/mpls.h>
@@ -810,7 +811,7 @@ static void ovs_fragment(struct net *net, struct vport 
*vport,
                skb_dst_set_noref(skb, &ovs_rt.dst);
                IP6CB(skb)->frag_max_size = mru;
 
-               ipv6_stub->ipv6_fragment(net, skb->sk, skb, ovs_vport_output);
+               ip6_fragment(net, skb->sk, skb, ovs_vport_output);
                refdst_drop(orig_dst);
        } else {
                WARN_ONCE(1, "Failed fragment ->%s: eth=%04x, MRU=%d, MTU=%d.",
diff --git a/net/sched/sch_frag.c b/net/sched/sch_frag.c
index d1d87dce7f3f..75ee52750919 100644
--- a/net/sched/sch_frag.c
+++ b/net/sched/sch_frag.c
@@ -6,6 +6,7 @@
 #include <net/dst.h>
 #include <net/ip.h>
 #include <net/ip6_fib.h>
+#include <net/ip6_route.h>
 
 struct sch_frag_data {
        unsigned long dst;
@@ -127,8 +128,7 @@ static int sch_fragment(struct net *net, struct sk_buff 
*skb,
                skb_dst_set_noref(skb, &sch_frag_rt.dst);
                IP6CB(skb)->frag_max_size = mru;
 
-               ret = ipv6_stub->ipv6_fragment(net, skb->sk, skb,
-                                              sch_frag_xmit);
+               ret = ip6_fragment(net, skb->sk, skb, sch_frag_xmit);
                local_unlock_nested_bh(&sch_frag_data_storage.bh_lock);
                refdst_drop(orig_dst);
        } else {
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 2b8e385d1e51..2c66b356025a 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -44,7 +44,6 @@
 #include <net/sock.h>
 #include <net/ip.h>
 #include <net/udp_tunnel.h>
-#include <net/ipv6_stubs.h>
 #include <linux/tipc_netlink.h>
 #include "core.h"
 #include "addr.h"
@@ -207,9 +206,8 @@ static int tipc_udp_xmit(struct net *net, struct sk_buff 
*skb,
                                .saddr = src->ipv6,
                                .flowi6_proto = IPPROTO_UDP
                        };
-                       ndst = ipv6_stub->ipv6_dst_lookup_flow(net,
-                                                              ub->ubsock->sk,
-                                                              &fl6, NULL);
+                       ndst = ip6_dst_lookup_flow(net, ub->ubsock->sk,
+                                                  &fl6, NULL);
                        if (IS_ERR(ndst)) {
                                err = PTR_ERR(ndst);
                                goto tx_error;
@@ -418,8 +416,7 @@ static int enable_mcast(struct udp_bearer *ub, struct 
udp_media_addr *remote)
 #if IS_ENABLED(CONFIG_IPV6)
        } else {
                lock_sock(sk);
-               err = ipv6_stub->ipv6_sock_mc_join(sk, ub->ifindex,
-                                                  &remote->ipv6);
+               err = ipv6_sock_mc_join(sk, ub->ifindex, &remote->ipv6);
                release_sock(sk);
 #endif
        }
diff --git a/net/xfrm/espintcp.c b/net/xfrm/espintcp.c
index 998832419097..a2756186e13a 100644
--- a/net/xfrm/espintcp.c
+++ b/net/xfrm/espintcp.c
@@ -7,9 +7,6 @@
 #include <linux/skmsg.h>
 #include <net/inet_common.h>
 #include <trace/events/sock.h>
-#if IS_ENABLED(CONFIG_IPV6)
-#include <net/ipv6_stubs.h>
-#endif
 #include <net/hotdata.h>
 
 static void handle_nonesp(struct espintcp_ctx *ctx, struct sk_buff *skb,
@@ -43,7 +40,7 @@ static void handle_esp(struct sk_buff *skb, struct sock *sk)
        local_bh_disable();
 #if IS_ENABLED(CONFIG_IPV6)
        if (sk->sk_family == AF_INET6)
-               ipv6_stub->xfrm6_rcv_encap(skb, IPPROTO_ESP, 0, 
TCP_ENCAP_ESPINTCP);
+               xfrm6_rcv_encap(skb, IPPROTO_ESP, 0, TCP_ENCAP_ESPINTCP);
        else
 #endif
                xfrm4_rcv_encap(skb, IPPROTO_ESP, 0, TCP_ENCAP_ESPINTCP);
diff --git a/net/xfrm/xfrm_nat_keepalive.c b/net/xfrm/xfrm_nat_keepalive.c
index ebf95d48e86c..d47f2ed8005c 100644
--- a/net/xfrm/xfrm_nat_keepalive.c
+++ b/net/xfrm/xfrm_nat_keepalive.c
@@ -98,14 +98,14 @@ static int nat_keepalive_send_ipv6(struct sk_buff *skb,
        local_lock_nested_bh(&nat_keepalive_sk_ipv6.bh_lock);
        sk = this_cpu_read(nat_keepalive_sk_ipv6.sock);
        sock_net_set(sk, net);
-       dst = ipv6_stub->ipv6_dst_lookup_flow(net, sk, &fl6, NULL);
+       dst = ip6_dst_lookup_flow(net, sk, &fl6, NULL);
        if (IS_ERR(dst)) {
                local_unlock_nested_bh(&nat_keepalive_sk_ipv6.bh_lock);
                return PTR_ERR(dst);
        }
 
        skb_dst_set(skb, dst);
-       err = ipv6_stub->ip6_xmit(sk, skb, &fl6, skb->mark, NULL, 0, 0);
+       err = ip6_xmit(sk, skb, &fl6, skb->mark, NULL, 0, 0);
        sock_net_set(sk, &init_net);
        local_unlock_nested_bh(&nat_keepalive_sk_ipv6.bh_lock);
        return err;
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 54222fcbd7fd..a9652b422f51 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -20,7 +20,6 @@
 
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ip6_route.h>
-#include <net/ipv6_stubs.h>
 #endif
 
 #include "xfrm_inout.h"
@@ -900,7 +899,7 @@ int xfrm6_tunnel_check_size(struct sk_buff *skb)
                skb->protocol = htons(ETH_P_IPV6);
 
                if (xfrm6_local_dontfrag(sk))
-                       ipv6_stub->xfrm6_local_rxpmtu(skb, mtu);
+                       xfrm6_local_rxpmtu(skb, mtu);
                else if (sk)
                        xfrm_local_error(skb, mtu);
                else
-- 
2.53.0

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