ipv6: Remove DST_METRICS_FORCE_OVERWRITE and _rt6i_peer

_rt6i_peer is no longer needed after the last patch,
'ipv6: Stop rt6_info from using inet_peer's metrics'.

DST_METRICS_FORCE_OVERWRITE is added by
commit e5fd387ad5b3 ("ipv6: do not overwrite inetpeer metrics prematurely").
Since inetpeer is no longer used for metrics, this bit is also not needed.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Michal Kubeček <mkubecek@suse.cz>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/dst.h b/include/net/dst.h
index 0fb99a2..22aa93f 100644 (file)
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -109,7 +109,6 @@ u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
 extern const u32 dst_default_metrics[];
 
 #define DST_METRICS_READ_ONLY          0x1UL
-#define DST_METRICS_FORCE_OVERWRITE    0x2UL
 #define DST_METRICS_FLAGS              0x3UL
 #define __DST_METRICS_PTR(Y)   \
        ((u32 *)((Y) & ~DST_METRICS_FLAGS))
@@ -120,11 +119,6 @@ static inline bool dst_metrics_read_only(const struct dst_entry *dst)
        return dst->_metrics & DST_METRICS_READ_ONLY;
 }
 
-static inline void dst_metrics_set_force_overwrite(struct dst_entry *dst)
-{
-       dst->_metrics |= DST_METRICS_FORCE_OVERWRITE;
-}
-
 void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old);
 
 static inline void dst_destroy_metrics_generic(struct dst_entry *dst)

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 7383a8c..e000180 100644 (file)
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -121,7 +121,6 @@ struct rt6_info {
        struct rt6key                   rt6i_prefsrc;
 
        struct inet6_dev                *rt6i_idev;
-       unsigned long                   _rt6i_peer;
 
        u32                             rt6i_metric;
        u32                             rt6i_pmtu;
@@ -130,36 +129,6 @@ struct rt6_info {
        u8                              rt6i_protocol;
 };
 
-static inline struct inet_peer *rt6_peer_ptr(struct rt6_info *rt)
-{
-       return inetpeer_ptr(rt->_rt6i_peer);
-}
-
-static inline bool rt6_has_peer(struct rt6_info *rt)
-{
-       return inetpeer_ptr_is_peer(rt->_rt6i_peer);
-}
-
-static inline void __rt6_set_peer(struct rt6_info *rt, struct inet_peer *peer)
-{
-       __inetpeer_ptr_set_peer(&rt->_rt6i_peer, peer);
-}
-
-static inline bool rt6_set_peer(struct rt6_info *rt, struct inet_peer *peer)
-{
-       return inetpeer_ptr_set_peer(&rt->_rt6i_peer, peer);
-}
-
-static inline void rt6_init_peer(struct rt6_info *rt, struct inet_peer_base *base)
-{
-       inetpeer_init_ptr(&rt->_rt6i_peer, base);
-}
-
-static inline void rt6_transfer_peer(struct rt6_info *rt, struct rt6_info *ort)
-{
-       inetpeer_transfer_peer(&rt->_rt6i_peer, &ort->_rt6i_peer);
-}
-
 static inline struct inet6_dev *ip6_dst_idev(struct dst_entry *dst)
 {
        return ((struct rt6_info *)dst)->rt6i_idev;

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 4d6eb5d..3522711 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -105,36 +105,6 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
                                           const struct in6_addr *gwaddr, int ifindex);
 #endif
 
-static void rt6_bind_peer(struct rt6_info *rt, int create)
-{
-       struct inet_peer_base *base;
-       struct inet_peer *peer;
-
-       base = inetpeer_base_ptr(rt->_rt6i_peer);
-       if (!base)
-               return;
-
-       peer = inet_getpeer_v6(base, &rt->rt6i_dst.addr, create);
-       if (peer) {
-               if (!rt6_set_peer(rt, peer))
-                       inet_putpeer(peer);
-       }
-}
-
-static struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)
-{
-       if (rt6_has_peer(rt))
-               return rt6_peer_ptr(rt);
-
-       rt6_bind_peer(rt, create);
-       return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL);
-}
-
-static struct inet_peer *rt6_get_peer_create(struct rt6_info *rt)
-{
-       return __rt6_get_peer(rt, 1);
-}
-
 static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)
 {
        struct rt6_info *rt = (struct rt6_info *)dst;
@@ -291,7 +261,6 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net,
                struct dst_entry *dst = &rt->dst;
 
                memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
-               rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
                INIT_LIST_HEAD(&rt->rt6i_siblings);
        }
        return rt;
@@ -1052,7 +1021,6 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
                new = &rt->dst;
 
                memset(new + 1, 0, sizeof(*rt) - sizeof(*new));
-               rt6_init_peer(rt, net->ipv6.peers);
 
                new->__use = 1;
                new->input = dst_discard;
@@ -1597,10 +1565,8 @@ int ip6_route_add(struct fib6_config *cfg)
 
        ipv6_addr_prefix(&rt->rt6i_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
        rt->rt6i_dst.plen = cfg->fc_dst_len;
-       if (rt->rt6i_dst.plen == 128) {
+       if (rt->rt6i_dst.plen == 128)
                rt->dst.flags |= DST_HOST;
-               dst_metrics_set_force_overwrite(&rt->dst);
-       }
 
 #ifdef CONFIG_IPV6_SUBTREES
        ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);

diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index f337a90..6ae256b 100644 (file)
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -71,13 +71,6 @@ static int xfrm6_get_tos(const struct flowi *fl)
        return 0;
 }
 
-static void xfrm6_init_dst(struct net *net, struct xfrm_dst *xdst)
-{
-       struct rt6_info *rt = (struct rt6_info *)xdst;
-
-       rt6_init_peer(rt, net->ipv6.peers);
-}
-
 static int xfrm6_init_path(struct xfrm_dst *path, struct dst_entry *dst,
                           int nfheader_len)
 {
@@ -106,8 +99,6 @@ static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
                return -ENODEV;
        }
 
-       rt6_transfer_peer(&xdst->u.rt6, rt);
-
        /* Sheit... I remember I did this right. Apparently,
         * it was magically lost, so this code needs audit */
        xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST |
@@ -255,10 +246,6 @@ static void xfrm6_dst_destroy(struct dst_entry *dst)
        if (likely(xdst->u.rt6.rt6i_idev))
                in6_dev_put(xdst->u.rt6.rt6i_idev);
        dst_destroy_metrics_generic(dst);
-       if (rt6_has_peer(&xdst->u.rt6)) {
-               struct inet_peer *peer = rt6_peer_ptr(&xdst->u.rt6);
-               inet_putpeer(peer);
-       }
        xfrm_dst_destroy(xdst);
 }
 
@@ -308,7 +295,6 @@ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
        .get_saddr =            xfrm6_get_saddr,
        .decode_session =       _decode_session6,
        .get_tos =              xfrm6_get_tos,
-       .init_dst =             xfrm6_init_dst,
        .init_path =            xfrm6_init_path,
        .fill_dst =             xfrm6_fill_dst,
        .blackhole_route =      ip6_blackhole_route,