[PATCH 6.1 327/609] ipv6: introduce dst_rt6_info() helper
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.stable,dev.linux.lists.patches |
|---|---|
| Message-ID | <[email protected]> |
6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Dumazet <[email protected]> [ Upstream commit e8dfd42c17faf183415323db1ef0c977be0d6489 ] Instead of (struct rt6_info *)dst casts, we can use : #define dst_rt6_info(_ptr) \ container_of_const(_ptr, struct rt6_info, dst) Some places needed missing const qualifiers : ip6_confirm_neigh(), ipv6_anycast_destination(), ipv6_unicast_destination(), has_gateway() v2: added missing parts (David Ahern) Signed-off-by: Eric Dumazet <[email protected]> Reviewed-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]> Stable-dep-of: e876b75b9020 ("ipvs: fix the checksum validations") Signed-off-by: Sasha Levin <[email protected]> --- drivers/infiniband/core/addr.c | 6 ++-- .../ethernet/mellanox/mlxsw/spectrum_span.c | 2 +- drivers/net/vrf.c | 2 +- drivers/net/vxlan/vxlan_core.c | 2 +- drivers/s390/net/qeth_core.h | 4 +-- include/net/ip6_fib.h | 6 ++-- include/net/ip6_route.h | 11 ++++---- net/bluetooth/6lowpan.c | 2 +- net/core/dst_cache.c | 2 +- net/core/filter.c | 2 +- net/ipv4/ip_tunnel.c | 2 +- net/ipv6/icmp.c | 8 +++--- net/ipv6/ila/ila_lwt.c | 4 +-- net/ipv6/ip6_output.c | 18 ++++++------ net/ipv6/ip6mr.c | 2 +- net/ipv6/ndisc.c | 2 +- net/ipv6/ping.c | 2 +- net/ipv6/raw.c | 4 +-- net/ipv6/route.c | 28 +++++++++---------- net/ipv6/tcp_ipv6.c | 4 +-- net/ipv6/udp.c | 11 +++----- net/ipv6/xfrm6_policy.c | 2 +- net/l2tp/l2tp_ip6.c | 2 +- net/mpls/mpls_iptunnel.c | 2 +- net/netfilter/ipvs/ip_vs_xmit.c | 14 +++++----- net/netfilter/nf_flow_table_core.c | 8 ++---- net/netfilter/nf_flow_table_ip.c | 4 +-- net/netfilter/nft_rt.c | 2 +- net/sctp/ipv6.c | 2 +- net/xfrm/xfrm_policy.c | 3 +- 30 files changed, 77 insertions(+), 86 deletions(-) diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index 3e87e92e9993e..579fd879716dc 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -338,15 +338,15 @@ static int dst_fetch_ha(const struct dst_entry *dst, static bool has_gateway(const struct dst_entry *dst, sa_family_t family) { - struct rtable *rt; - struct rt6_info *rt6; + const struct rtable *rt; + const struct rt6_info *rt6; if (family == AF_INET) { rt = container_of(dst, struct rtable, dst); return rt->rt_uses_gateway; } - rt6 = container_of(dst, struct rt6_info, dst); + rt6 = dst_rt6_info(dst); return rt6->rt6i_flags & RTF_GATEWAY; } diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c index 8883ef0127477..fa3fef2b74db0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c @@ -538,7 +538,7 @@ mlxsw_sp_span_gretap6_route(const struct net_device *to_dev, if (!dst || dst->error) goto out; - rt6 = container_of(dst, struct rt6_info, dst); + rt6 = dst_rt6_info(dst); dev = dst->dev; *saddrp = fl6.saddr; diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index 51b34882827e9..65668113f715e 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -655,7 +655,7 @@ static int vrf_finish_output6(struct net *net, struct sock *sk, skb->dev = dev; rcu_read_lock(); - nexthop = rt6_nexthop((struct rt6_info *)dst, &ipv6_hdr(skb)->daddr); + 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); diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c index 8e3e8a7cad1c9..5a709566e5a28 100644 --- a/drivers/net/vxlan/vxlan_core.c +++ b/drivers/net/vxlan/vxlan_core.c @@ -2715,7 +2715,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, } if (!info) { - u32 rt6i_flags = ((struct rt6_info *)ndst)->rt6i_flags; + u32 rt6i_flags = dst_rt6_info(ndst)->rt6i_flags; err = encap_bypass_if_local(skb, dev, vxlan, dst, dst_port, ifindex, vni, diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 613eab7297046..5f17a2a5d0e33 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -956,7 +956,7 @@ static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, struct dst_entry *dst = skb_dst(skb); struct rt6_info *rt; - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); if (dst) { if (proto == htons(ETH_P_IPV6)) dst = dst_check(dst, rt6_get_cookie(rt)); @@ -978,7 +978,7 @@ static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb, static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb, struct dst_entry *dst) { - struct rt6_info *rt = (struct rt6_info *) dst; + struct rt6_info *rt = dst_rt6_info(dst); if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) return &rt->rt6i_gateway; diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index fa4e6af382e2a..ef38ee0912e1a 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -240,9 +240,11 @@ struct fib6_result { for (rt = (w)->leaf; rt; \ rt = rcu_dereference_protected(rt->fib6_next, 1)) -static inline struct inet6_dev *ip6_dst_idev(struct dst_entry *dst) +#define dst_rt6_info(_ptr) container_of_const(_ptr, struct rt6_info, dst) + +static inline struct inet6_dev *ip6_dst_idev(const struct dst_entry *dst) { - return ((struct rt6_info *)dst)->rt6i_idev; + return dst_rt6_info(dst)->rt6i_idev; } static inline bool fib6_requires_src(const struct fib6_info *rt) diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index 4cd0839c86c92..7c0184c09392f 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -222,12 +222,11 @@ void rt6_uncached_list_del(struct rt6_info *rt); static inline const struct rt6_info *skb_rt6_info(const struct sk_buff *skb) { const struct dst_entry *dst = skb_dst(skb); - const struct rt6_info *rt6 = NULL; if (dst) - rt6 = container_of(dst, struct rt6_info, dst); + return dst_rt6_info(dst); - return rt6; + return NULL; } /* @@ -239,7 +238,7 @@ static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, { struct ipv6_pinfo *np = inet6_sk(sk); - np->dst_cookie = rt6_get_cookie((struct rt6_info *)dst); + np->dst_cookie = rt6_get_cookie(dst_rt6_info(dst)); sk_setup_caps(sk, dst); np->daddr_cache = daddr; #ifdef CONFIG_IPV6_SUBTREES @@ -252,7 +251,7 @@ void ip6_sk_dst_store_flow(struct sock *sk, struct dst_entry *dst, static inline bool ipv6_unicast_destination(const struct sk_buff *skb) { - struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); + const struct rt6_info *rt = dst_rt6_info(skb_dst(skb)); return rt->rt6i_flags & RTF_LOCAL; } @@ -260,7 +259,7 @@ static inline bool ipv6_unicast_destination(const struct sk_buff *skb) static inline bool ipv6_anycast_destination(const struct dst_entry *dst, const struct in6_addr *daddr) { - struct rt6_info *rt = (struct rt6_info *)dst; + const struct rt6_info *rt = dst_rt6_info(dst); return rt->rt6i_flags & RTF_ANYCAST || (rt->rt6i_dst.plen < 127 && diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index c94e59b1f7133..e2196cf4f6f70 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -140,7 +140,7 @@ static inline struct lowpan_peer *peer_lookup_dst(struct lowpan_btle_dev *dev, struct in6_addr *daddr, struct sk_buff *skb) { - struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); + struct rt6_info *rt = dst_rt6_info(skb_dst(skb)); int count = atomic_read(&dev->peer_count); const struct in6_addr *nexthop; struct lowpan_peer *peer; diff --git a/net/core/dst_cache.c b/net/core/dst_cache.c index 0ccfd5fa5cb9b..b17171345d649 100644 --- a/net/core/dst_cache.c +++ b/net/core/dst_cache.c @@ -112,7 +112,7 @@ void dst_cache_set_ip6(struct dst_cache *dst_cache, struct dst_entry *dst, idst = this_cpu_ptr(dst_cache->cache); dst_cache_per_cpu_dst_set(this_cpu_ptr(dst_cache->cache), dst, - rt6_get_cookie((struct rt6_info *)dst)); + rt6_get_cookie(dst_rt6_info(dst))); idst->in6_saddr = *saddr; } EXPORT_SYMBOL_GPL(dst_cache_set_ip6); diff --git a/net/core/filter.c b/net/core/filter.c index ce9f079d46e3b..91d337252fc90 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2226,7 +2226,7 @@ static int bpf_out_neigh_v6(struct net *net, struct sk_buff *skb, rcu_read_lock(); if (!nh) { dst = skb_dst(skb); - nexthop = rt6_nexthop(container_of(dst, struct rt6_info, dst), + nexthop = rt6_nexthop(dst_rt6_info(dst), &ipv6_hdr(skb)->daddr); } else { nexthop = &nh->ipv6_nh; diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index dcf9e9c52a22a..5dfb007f7792d 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -544,7 +544,7 @@ static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb, struct rt6_info *rt6; __be32 daddr; - rt6 = skb_valid_dst(skb) ? (struct rt6_info *)skb_dst(skb) : + rt6 = skb_valid_dst(skb) ? dst_rt6_info(skb_dst(skb)) : NULL; daddr = md ? dst : tunnel->parms.iph.daddr; diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 877cb5e8ded7b..f8f7c1246f43b 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -214,7 +214,7 @@ static bool icmpv6_xrlim_allow(struct sock *sk, u8 type, } else if (dst->dev && (dst->dev->flags&IFF_LOOPBACK)) { res = true; } else { - struct rt6_info *rt = (struct rt6_info *)dst; + struct rt6_info *rt = dst_rt6_info(dst); int tmo = net->ipv6.sysctl.icmpv6_time; struct inet_peer *peer; @@ -245,7 +245,7 @@ static bool icmpv6_rt_has_prefsrc(struct sock *sk, u8 type, dst = ip6_route_output(net, sk, fl6); if (!dst->error) { - struct rt6_info *rt = (struct rt6_info *)dst; + struct rt6_info *rt = dst_rt6_info(dst); struct in6_addr prefsrc; rt6_get_prefsrc(rt, &prefsrc); @@ -624,7 +624,7 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info, if (ip6_append_data(sk, icmpv6_getfrag, &msg, len + sizeof(struct icmp6hdr), sizeof(struct icmp6hdr), - &ipc6, &fl6, (struct rt6_info *)dst, + &ipc6, &fl6, dst_rt6_info(dst), MSG_DONTWAIT)) { ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS); ip6_flush_pending_frames(sk); @@ -817,7 +817,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb) if (ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr), sizeof(struct icmp6hdr), &ipc6, &fl6, - (struct rt6_info *)dst, MSG_DONTWAIT)) { + dst_rt6_info(dst), MSG_DONTWAIT)) { __ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS); ip6_flush_pending_frames(sk); } else { diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c index 7397f764c66cc..7d574f5132e2f 100644 --- a/net/ipv6/ila/ila_lwt.c +++ b/net/ipv6/ila/ila_lwt.c @@ -38,7 +38,7 @@ static inline struct ila_params *ila_params_lwtunnel( static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb) { struct dst_entry *orig_dst = skb_dst(skb); - struct rt6_info *rt = (struct rt6_info *)orig_dst; + struct rt6_info *rt = dst_rt6_info(orig_dst); struct ila_lwt *ilwt = ila_lwt_lwtunnel(orig_dst->lwtstate); struct dst_entry *dst; int err = -EINVAL; @@ -72,7 +72,7 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb) memset(&fl6, 0, sizeof(fl6)); fl6.flowi6_oif = orig_dst->dev->ifindex; fl6.flowi6_iif = LOOPBACK_IFINDEX; - fl6.daddr = *rt6_nexthop((struct rt6_info *)orig_dst, + fl6.daddr = *rt6_nexthop(dst_rt6_info(orig_dst), &ip6h->daddr); dst = ip6_route_output(net, NULL, &fl6); diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index d8ce708fcb3c4..ad821d362656f 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -121,7 +121,7 @@ static int ip6_finish_output2(struct net *net, struct sock *sk, struct sk_buff * } rcu_read_lock(); - nexthop = rt6_nexthop((struct rt6_info *)dst, daddr); + nexthop = rt6_nexthop(dst_rt6_info(dst), daddr); neigh = __ipv6_neigh_lookup_noref(dev, nexthop); if (unlikely(IS_ERR_OR_NULL(neigh))) { @@ -611,7 +611,7 @@ int ip6_forward(struct sk_buff *skb) * send a redirect. */ - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); if (rt->rt6i_flags & RTF_GATEWAY) target = &rt->rt6i_gateway; else @@ -866,7 +866,7 @@ int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, int (*output)(struct net *, struct sock *, struct sk_buff *)) { struct sk_buff *frag; - struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); + struct rt6_info *rt = dst_rt6_info(skb_dst(skb)); struct ipv6_pinfo *np = skb->sk && !dev_recursion_level() ? inet6_sk(skb->sk) : NULL; bool mono_delivery_time = skb->mono_delivery_time; @@ -1074,7 +1074,7 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk, return NULL; } - rt = (struct rt6_info *)dst; + rt = dst_rt6_info(dst); /* Yes, checking route validity in not connected * case is not very simple. Take into account, * that we do not support routing by source, TOS, @@ -1129,7 +1129,7 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk, struct rt6_info *rt; *dst = ip6_route_output(net, sk, fl6); - rt = (*dst)->error ? NULL : (struct rt6_info *)*dst; + rt = (*dst)->error ? NULL : dst_rt6_info(*dst); rcu_read_lock(); from = rt ? rcu_dereference(rt->from) : NULL; @@ -1171,7 +1171,7 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk, * dst entry and replace it instead with the * dst entry of the nexthop router */ - rt = (struct rt6_info *) *dst; + rt = dst_rt6_info(*dst); rcu_read_lock(); n = __ipv6_neigh_lookup_noref(rt->dst.dev, rt6_nexthop(rt, &fl6->daddr)); @@ -1437,7 +1437,7 @@ static int __ip6_append_data(struct sock *sk, int offset = 0; bool zc = false; u32 tskey = 0; - struct rt6_info *rt = (struct rt6_info *)cork->dst; + struct rt6_info *rt = dst_rt6_info(cork->dst); bool paged, hold_tskey, extra_uref = false; struct ipv6_txoptions *opt = v6_cork->opt; int csummode = CHECKSUM_NONE; @@ -1869,7 +1869,7 @@ struct sk_buff *__ip6_make_skb(struct sock *sk, struct net *net = sock_net(sk); struct ipv6hdr *hdr; struct ipv6_txoptions *opt = v6_cork->opt; - struct rt6_info *rt = (struct rt6_info *)cork->base.dst; + struct rt6_info *rt = dst_rt6_info(cork->base.dst); struct flowi6 *fl6 = &cork->fl.u.ip6; unsigned char proto = fl6->flowi6_proto; @@ -1941,7 +1941,7 @@ struct sk_buff *__ip6_make_skb(struct sock *sk, int ip6_send_skb(struct sk_buff *skb) { struct net *net = sock_net(skb->sk); - struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); + struct rt6_info *rt = dst_rt6_info(skb_dst(skb)); int err; rcu_read_lock(); diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 06f66531628fe..00774cfa011af 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -2301,7 +2301,7 @@ int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm, int err; struct mr_table *mrt; struct mfc6_cache *cache; - struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); + struct rt6_info *rt = dst_rt6_info(skb_dst(skb)); rcu_read_lock(); mrt = __ip6mr_get_table(net, RT6_TABLE_DFLT); diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 85f7798d3e55c..a53d2a6a99f85 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1717,7 +1717,7 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target) if (IS_ERR(dst)) return; - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); if (rt->rt6i_flags & RTF_GATEWAY) { ND_PRINTK(2, warn, diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index a5d7d1915ba7e..c9550fddc6b3d 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -154,7 +154,7 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) dst = ip6_sk_dst_lookup_flow(sk, &fl6, daddr, false); if (IS_ERR(dst)) return PTR_ERR(dst); - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) fl6.flowi6_oif = np->mcast_oif; diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index f6f18196ed6e4..7b17f1b2a6128 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -591,7 +591,7 @@ static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length, struct ipv6hdr *iph; struct sk_buff *skb; int err; - struct rt6_info *rt = (struct rt6_info *)*dstp; + struct rt6_info *rt = dst_rt6_info(*dstp); int hlen = LL_RESERVED_SPACE(rt->dst.dev); int tlen = rt->dst.dev->needed_tailroom; @@ -915,7 +915,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ipc6.opt = opt; lock_sock(sk); err = ip6_append_data(sk, raw6_getfrag, &rfv, - len, 0, &ipc6, &fl6, (struct rt6_info *)dst, + len, 0, &ipc6, &fl6, dst_rt6_info(dst), msg->msg_flags); if (err) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index f047000e2c55c..ea703c569d4b4 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -227,7 +227,7 @@ static struct neighbour *ip6_dst_neigh_lookup(const struct dst_entry *dst, struct sk_buff *skb, const void *daddr) { - const struct rt6_info *rt = container_of(dst, struct rt6_info, dst); + const struct rt6_info *rt = dst_rt6_info(dst); return ip6_neigh_lookup(rt6_nexthop(rt, &in6addr_any), dst->dev, skb, daddr); @@ -235,8 +235,8 @@ static struct neighbour *ip6_dst_neigh_lookup(const struct dst_entry *dst, static void ip6_confirm_neigh(const struct dst_entry *dst, const void *daddr) { + const struct rt6_info *rt = dst_rt6_info(dst); struct net_device *dev = dst->dev; - struct rt6_info *rt = (struct rt6_info *)dst; daddr = choose_neigh_daddr(rt6_nexthop(rt, &in6addr_any), NULL, daddr); if (!daddr) @@ -356,7 +356,7 @@ EXPORT_SYMBOL(ip6_dst_alloc); static void ip6_dst_destroy(struct dst_entry *dst) { - struct rt6_info *rt = (struct rt6_info *)dst; + struct rt6_info *rt = dst_rt6_info(dst); struct fib6_info *from; struct inet6_dev *idev; @@ -376,7 +376,7 @@ static void ip6_dst_destroy(struct dst_entry *dst) static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev, int how) { - struct rt6_info *rt = (struct rt6_info *)dst; + struct rt6_info *rt = dst_rt6_info(dst); struct inet6_dev *idev = rt->rt6i_idev; struct fib6_info *from; @@ -1324,7 +1324,7 @@ struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr, dst = fib6_rule_lookup(net, &fl6, skb, flags, ip6_pol_route_lookup); if (dst->error == 0) - return (struct rt6_info *) dst; + return dst_rt6_info(dst); dst_release(dst); @@ -2681,7 +2681,7 @@ struct dst_entry *ip6_route_output_flags(struct net *net, rcu_read_lock(); dst = ip6_route_output_flags_noref(net, sk, fl6, flags); - rt6 = (struct rt6_info *)dst; + rt6 = dst_rt6_info(dst); /* For dst cached in uncached_list, refcnt is already taken. */ if (list_empty(&rt6->rt6i_uncached) && !dst_hold_safe(dst)) { dst = &net->ipv6.ip6_null_entry->dst; @@ -2695,7 +2695,7 @@ EXPORT_SYMBOL_GPL(ip6_route_output_flags); struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_orig) { - struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig; + struct rt6_info *rt, *ort = dst_rt6_info(dst_orig); struct net_device *loopback_dev = net->loopback_dev; struct dst_entry *new = NULL; @@ -2778,7 +2778,7 @@ INDIRECT_CALLABLE_SCOPE struct dst_entry *ip6_dst_check(struct dst_entry *dst, struct fib6_info *from; struct rt6_info *rt; - rt = container_of(dst, struct rt6_info, dst); + rt = dst_rt6_info(dst); if (rt->sernum) return rt6_is_valid(rt) ? dst : NULL; @@ -2807,7 +2807,7 @@ EXPORT_INDIRECT_CALLABLE(ip6_dst_check); static void ip6_negative_advice(struct sock *sk, struct dst_entry *dst) { - struct rt6_info *rt = (struct rt6_info *) dst; + struct rt6_info *rt = dst_rt6_info(dst); if (rt->rt6i_flags & RTF_CACHE) { rcu_read_lock(); @@ -2830,7 +2830,7 @@ static void ip6_link_failure(struct sk_buff *skb) icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0); - rt = (struct rt6_info *) skb_dst(skb); + rt = dst_rt6_info(skb_dst(skb)); if (rt) { rcu_read_lock(); if (rt->rt6i_flags & RTF_CACHE) { @@ -2886,7 +2886,7 @@ static void __ip6_rt_update_pmtu(struct dst_entry *dst, const struct sock *sk, bool confirm_neigh) { const struct in6_addr *daddr, *saddr; - struct rt6_info *rt6 = (struct rt6_info *)dst; + struct rt6_info *rt6 = dst_rt6_info(dst); /* Note: do *NOT* check dst_metric_locked(dst, RTAX_MTU) * IPv6 pmtu discovery isn't optional, so 'mtu lock' cannot disable it. @@ -4214,7 +4214,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu } } - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); if (rt->rt6i_flags & RTF_REJECT) { net_dbg_ratelimited("rt6_redirect: source isn't a valid nexthop for redirect target\n"); return; @@ -5665,7 +5665,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb, int iif, int type, u32 portid, u32 seq, unsigned int flags) { - struct rt6_info *rt6 = (struct rt6_info *)dst; + struct rt6_info *rt6 = dst_rt6_info(dst); struct rt6key *rt6_dst, *rt6_src; u32 *pmetrics, table, rt6_flags; unsigned char nh_flags = 0; @@ -6182,7 +6182,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, } - rt = container_of(dst, struct rt6_info, dst); + rt = dst_rt6_info(dst); if (rt->dst.error) { err = rt->dst.error; ip6_rt_put(rt); diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index a1e31fe596708..3d909982d8187 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -106,11 +106,9 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb) struct dst_entry *dst = skb_dst(skb); if (dst && dst_hold_safe(dst)) { - const struct rt6_info *rt = (const struct rt6_info *)dst; - rcu_assign_pointer(sk->sk_rx_dst, dst); sk->sk_rx_dst_ifindex = skb->skb_iif; - sk->sk_rx_dst_cookie = rt6_get_cookie(rt); + sk->sk_rx_dst_cookie = rt6_get_cookie(dst_rt6_info(dst)); } } diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 184fc7a5e4d17..96a46dc473360 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -925,11 +925,8 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb, static void udp6_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst) { - if (udp_sk_rx_dst_set(sk, dst)) { - const struct rt6_info *rt = (const struct rt6_info *)dst; - - sk->sk_rx_dst_cookie = rt6_get_cookie(rt); - } + if (udp_sk_rx_dst_set(sk, dst)) + sk->sk_rx_dst_cookie = rt6_get_cookie(dst_rt6_info(dst)); } /* wrapper for udp_queue_rcv_skb tacking care of csum conversion and @@ -1593,7 +1590,7 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) skb = ip6_make_skb(sk, getfrag, msg, ulen, sizeof(struct udphdr), &ipc6, - (struct rt6_info *)dst, + dst_rt6_info(dst), msg->msg_flags, &cork); err = PTR_ERR(skb); if (!IS_ERR_OR_NULL(skb)) @@ -1620,7 +1617,7 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ipc6.dontfrag = np->dontfrag; up->len += ulen; err = ip6_append_data(sk, getfrag, msg, ulen, sizeof(struct udphdr), - &ipc6, fl6, (struct rt6_info *)dst, + &ipc6, fl6, dst_rt6_info(dst), corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags); if (err) udp_v6_flush_pending_frames(sk); diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index c945473f6e5fe..0342efd0a0b0a 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -80,7 +80,7 @@ static int xfrm6_get_saddr(xfrm_address_t *saddr, static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev, const struct flowi *fl) { - struct rt6_info *rt = (struct rt6_info *)xdst->route; + struct rt6_info *rt = dst_rt6_info(xdst->route); xdst->u.dst.dev = dev; netdev_hold(dev, &xdst->u.dst.dev_tracker, GFP_ATOMIC); diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index bb92dc8b82f39..e282b91b396c7 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -633,7 +633,7 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ulen = len + (skb_queue_empty(&sk->sk_write_queue) ? transhdrlen : 0); err = ip6_append_data(sk, ip_generic_getfrag, msg, ulen, transhdrlen, &ipc6, - &fl6, (struct rt6_info *)dst, + &fl6, dst_rt6_info(dst), msg->msg_flags); if (err) ip6_flush_pending_frames(sk); diff --git a/net/mpls/mpls_iptunnel.c b/net/mpls/mpls_iptunnel.c index ef59e25dc4827..8985abcb7a058 100644 --- a/net/mpls/mpls_iptunnel.c +++ b/net/mpls/mpls_iptunnel.c @@ -92,7 +92,7 @@ static int mpls_xmit(struct sk_buff *skb) ttl = net->mpls.default_ttl; else ttl = ipv6_hdr(skb)->hop_limit; - rt6 = (struct rt6_info *)dst; + rt6 = dst_rt6_info(dst); } else { goto drop; } diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index 9793eb8884373..0fc8cd2d4859e 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -184,7 +184,7 @@ static inline bool crosses_local_route_boundary(int skb_af, struct sk_buff *skb, (!skb->dev || skb->dev->flags & IFF_LOOPBACK) && (addr_type & IPV6_ADDR_LOOPBACK); old_rt_is_local = __ip_vs_is_local_route6( - (struct rt6_info *)skb_dst(skb)); + dst_rt6_info(skb_dst(skb))); } else #endif { @@ -484,7 +484,7 @@ __ip_vs_get_out_rt_v6(struct netns_ipvs *ipvs, int skb_af, struct sk_buff *skb, if (dest) { dest_dst = __ip_vs_dst_check(dest); if (likely(dest_dst)) - rt = (struct rt6_info *) dest_dst->dst_cache; + rt = dst_rt6_info(dest_dst->dst_cache); else { u32 cookie; @@ -504,7 +504,7 @@ __ip_vs_get_out_rt_v6(struct netns_ipvs *ipvs, int skb_af, struct sk_buff *skb, ip_vs_dest_dst_free(dest_dst); goto err_unreach; } - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); cookie = rt6_get_cookie(rt); __ip_vs_dst_set(dest, dest_dst, &rt->dst, cookie); spin_unlock_bh(&dest->dst_lock); @@ -520,7 +520,7 @@ __ip_vs_get_out_rt_v6(struct netns_ipvs *ipvs, int skb_af, struct sk_buff *skb, rt_mode); if (!dst) goto err_unreach; - rt = (struct rt6_info *) dst; + rt = dst_rt6_info(dst); } local = __ip_vs_is_local_route6(rt); @@ -879,7 +879,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, IP_VS_RT_MODE_RDR); if (local < 0) goto tx_error; - rt = (struct rt6_info *) skb_dst(skb); + rt = dst_rt6_info(skb_dst(skb)); /* * Avoid duplicate tuple in reply direction for NAT traffic * to local address when connection is sync-ed @@ -1315,7 +1315,7 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, if (local) return ip_vs_send_or_cont(NFPROTO_IPV6, skb, cp, 1); - rt = (struct rt6_info *) skb_dst(skb); + rt = dst_rt6_info(skb_dst(skb)); tdev = rt->dst.dev; /* @@ -1636,7 +1636,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, &cp->daddr.in6, NULL, ipvsh, 0, rt_mode); if (local < 0) goto tx_error; - rt = (struct rt6_info *) skb_dst(skb); + rt = dst_rt6_info(skb_dst(skb)); /* * Avoid duplicate tuple in reply direction for NAT traffic * to local address when connection is sync-ed diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c index 99195cf6b2657..9edc627d94b9e 100644 --- a/net/netfilter/nf_flow_table_core.c +++ b/net/netfilter/nf_flow_table_core.c @@ -77,12 +77,8 @@ EXPORT_SYMBOL_GPL(flow_offload_alloc); static u32 flow_offload_dst_cookie(struct flow_offload_tuple *flow_tuple) { - const struct rt6_info *rt; - - if (flow_tuple->l3proto == NFPROTO_IPV6) { - rt = (const struct rt6_info *)flow_tuple->dst_cache; - return rt6_get_cookie(rt); - } + if (flow_tuple->l3proto == NFPROTO_IPV6) + return rt6_get_cookie(dst_rt6_info(flow_tuple->dst_cache)); return 0; } diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c index 34be2c9bc39d8..523228e969ab4 100644 --- a/net/netfilter/nf_flow_table_ip.c +++ b/net/netfilter/nf_flow_table_ip.c @@ -665,7 +665,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb, nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len); if (unlikely(tuplehash->tuple.xmit_type == FLOW_OFFLOAD_XMIT_XFRM)) { - rt = (struct rt6_info *)tuplehash->tuple.dst_cache; + rt = dst_rt6_info(tuplehash->tuple.dst_cache); memset(skb->cb, 0, sizeof(struct inet6_skb_parm)); IP6CB(skb)->iif = skb->dev->ifindex; IP6CB(skb)->flags = IP6SKB_FORWARDED; @@ -674,7 +674,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb, switch (tuplehash->tuple.xmit_type) { case FLOW_OFFLOAD_XMIT_NEIGH: - rt = (struct rt6_info *)tuplehash->tuple.dst_cache; + rt = dst_rt6_info(tuplehash->tuple.dst_cache); outdev = rt->dst.dev; skb->dev = outdev; nexthop = rt6_nexthop(rt, &flow->tuplehash[!dir].tuple.src_v6); diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c index 7d21e16499bfa..eea3ee809c47d 100644 --- a/net/netfilter/nft_rt.c +++ b/net/netfilter/nft_rt.c @@ -80,7 +80,7 @@ void nft_rt_get_eval(const struct nft_expr *expr, if (nft_pf(pkt) != NFPROTO_IPV6) goto err; - memcpy(dest, rt6_nexthop((struct rt6_info *)dst, + memcpy(dest, rt6_nexthop(dst_rt6_info(dst), &ipv6_hdr(skb)->daddr), sizeof(struct in6_addr)); break; diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index a1cb8ac0408af..be190f5696d88 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -416,7 +416,7 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr, if (!IS_ERR_OR_NULL(dst)) { struct rt6_info *rt; - rt = (struct rt6_info *)dst; + rt = dst_rt6_info(dst); t->dst_cookie = rt6_get_cookie(rt); pr_debug("rt6_dst:%pI6/%d rt6_src:%pI6\n", &rt->rt6i_dst.addr, rt->rt6i_dst.plen, diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index dbaef78f43c21..2a47f5b5776e8 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2526,8 +2526,7 @@ static void xfrm_init_path(struct xfrm_dst *path, struct dst_entry *dst, int nfheader_len) { if (dst->ops->family == AF_INET6) { - struct rt6_info *rt = (struct rt6_info *)dst; - path->path_cookie = rt6_get_cookie(rt); + path->path_cookie = rt6_get_cookie(dst_rt6_info(dst)); path->u.rt6.rt6i_nfheader_len = nfheader_len; } } -- 2.53.0