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Message-Id: <20190523032801.11122-6-dsahern@kernel.org>
Date: Wed, 22 May 2019 20:27:59 -0700
From: David Ahern <dsahern@...nel.org>
To: davem@...emloft.net, netdev@...r.kernel.org
Cc: eric.dumazet@...il.com, idosch@...lanox.com,
David Ahern <dsahern@...il.com>
Subject: [PATCH net-next 5/7] ipv6: Make fib6_nh optional at the end of fib6_info
From: David Ahern <dsahern@...il.com>
Move fib6_nh to the end of fib6_info and make it an array of
size 0. Pass a flag to fib6_info_alloc indicating if the
allocation needs to add space for a fib6_nh.
The current code path always has a fib6_nh allocated with a
fib6_info; with nexthop objects they will be separate.
Signed-off-by: David Ahern <dsahern@...il.com>
---
.../net/ethernet/mellanox/mlxsw/spectrum_router.c | 31 ++---
include/net/ip6_fib.h | 6 +-
include/net/ip6_route.h | 4 +-
net/ipv6/addrconf.c | 6 +-
net/ipv6/ip6_fib.c | 18 +--
net/ipv6/ndisc.c | 8 +-
net/ipv6/route.c | 134 ++++++++++-----------
7 files changed, 106 insertions(+), 101 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 1cda8a248b12..0ec52be7cc33 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -2886,7 +2886,7 @@ mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp,
return false;
list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
- struct fib6_nh *fib6_nh = &mlxsw_sp_rt6->rt->fib6_nh;
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
struct in6_addr *gw;
int ifindex, weight;
@@ -2958,7 +2958,7 @@ mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed)
struct net_device *dev;
list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
- dev = mlxsw_sp_rt6->rt->fib6_nh.fib_nh_dev;
+ dev = mlxsw_sp_rt6->rt->fib6_nh->fib_nh_dev;
val ^= dev->ifindex;
}
@@ -3960,9 +3960,9 @@ mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp,
struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i];
struct fib6_info *rt = mlxsw_sp_rt6->rt;
- if (nh->rif && nh->rif->dev == rt->fib6_nh.fib_nh_dev &&
+ if (nh->rif && nh->rif->dev == rt->fib6_nh->fib_nh_dev &&
ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr,
- &rt->fib6_nh.fib_nh_gw6))
+ &rt->fib6_nh->fib_nh_gw6))
return nh;
continue;
}
@@ -4022,13 +4022,13 @@ mlxsw_sp_fib6_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry)
if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL ||
fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE) {
list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6,
- list)->rt->fib6_nh.fib_nh_flags |= RTNH_F_OFFLOAD;
+ list)->rt->fib6_nh->fib_nh_flags |= RTNH_F_OFFLOAD;
return;
}
list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group;
- struct fib6_nh *fib6_nh = &mlxsw_sp_rt6->rt->fib6_nh;
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
struct mlxsw_sp_nexthop *nh;
nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6);
@@ -4050,7 +4050,7 @@ mlxsw_sp_fib6_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry)
list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
struct fib6_info *rt = mlxsw_sp_rt6->rt;
- rt->fib6_nh.fib_nh_flags &= ~RTNH_F_OFFLOAD;
+ rt->fib6_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
}
}
@@ -4928,7 +4928,8 @@ static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6)
static bool mlxsw_sp_fib6_rt_can_mp(const struct fib6_info *rt)
{
/* RTF_CACHE routes are ignored */
- return !(rt->fib6_flags & RTF_ADDRCONF) && rt->fib6_nh.fib_nh_gw_family;
+ return !(rt->fib6_flags & RTF_ADDRCONF) &&
+ rt->fib6_nh->fib_nh_gw_family;
}
static struct fib6_info *
@@ -4987,8 +4988,8 @@ static bool mlxsw_sp_nexthop6_ipip_type(const struct mlxsw_sp *mlxsw_sp,
const struct fib6_info *rt,
enum mlxsw_sp_ipip_type *ret)
{
- return rt->fib6_nh.fib_nh_dev &&
- mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->fib6_nh.fib_nh_dev, ret);
+ return rt->fib6_nh->fib_nh_dev &&
+ mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->fib6_nh->fib_nh_dev, ret);
}
static int mlxsw_sp_nexthop6_type_init(struct mlxsw_sp *mlxsw_sp,
@@ -4998,7 +4999,7 @@ static int mlxsw_sp_nexthop6_type_init(struct mlxsw_sp *mlxsw_sp,
{
const struct mlxsw_sp_ipip_ops *ipip_ops;
struct mlxsw_sp_ipip_entry *ipip_entry;
- struct net_device *dev = rt->fib6_nh.fib_nh_dev;
+ struct net_device *dev = rt->fib6_nh->fib_nh_dev;
struct mlxsw_sp_rif *rif;
int err;
@@ -5041,11 +5042,11 @@ static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nexthop *nh,
const struct fib6_info *rt)
{
- struct net_device *dev = rt->fib6_nh.fib_nh_dev;
+ struct net_device *dev = rt->fib6_nh->fib_nh_dev;
nh->nh_grp = nh_grp;
- nh->nh_weight = rt->fib6_nh.fib_nh_weight;
- memcpy(&nh->gw_addr, &rt->fib6_nh.fib_nh_gw6, sizeof(nh->gw_addr));
+ nh->nh_weight = rt->fib6_nh->fib_nh_weight;
+ memcpy(&nh->gw_addr, &rt->fib6_nh->fib_nh_gw6, sizeof(nh->gw_addr));
mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh);
list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list);
@@ -5068,7 +5069,7 @@ static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp,
static bool mlxsw_sp_rt6_is_gateway(const struct mlxsw_sp *mlxsw_sp,
const struct fib6_info *rt)
{
- return rt->fib6_nh.fib_nh_gw_family ||
+ return rt->fib6_nh->fib_nh_gw_family ||
mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, NULL);
}
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 6b4852cf2fc2..ebe5d65f97e0 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -169,8 +169,8 @@ struct fib6_info {
fib6_destroying:1,
unused:3;
- struct fib6_nh fib6_nh;
struct rcu_head rcu;
+ struct fib6_nh fib6_nh[0];
};
struct rt6_info {
@@ -280,7 +280,7 @@ static inline void ip6_rt_put(struct rt6_info *rt)
dst_release(&rt->dst);
}
-struct fib6_info *fib6_info_alloc(gfp_t gfp_flags);
+struct fib6_info *fib6_info_alloc(gfp_t gfp_flags, bool with_fib6_nh);
void fib6_info_destroy_rcu(struct rcu_head *head);
static inline void fib6_info_hold(struct fib6_info *f6i)
@@ -443,7 +443,7 @@ void rt6_get_prefsrc(const struct rt6_info *rt, struct in6_addr *addr)
static inline struct net_device *fib6_info_nh_dev(const struct fib6_info *f6i)
{
- return f6i->fib6_nh.fib_nh_dev;
+ return f6i->fib6_nh->fib_nh_dev;
}
int fib6_nh_init(struct net *net, struct fib6_nh *fib6_nh,
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 4790beaa86e0..a6ce6ea856b9 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -70,7 +70,7 @@ static inline bool rt6_qualify_for_ecmp(const struct fib6_info *f6i)
{
/* the RTF_ADDRCONF flag filters out RA's */
return !(f6i->fib6_flags & RTF_ADDRCONF) &&
- f6i->fib6_nh.fib_nh_gw_family;
+ f6i->fib6_nh->fib_nh_gw_family;
}
void ip6_route_input(struct sk_buff *skb);
@@ -275,7 +275,7 @@ static inline struct in6_addr *rt6_nexthop(struct rt6_info *rt,
static inline bool rt6_duplicate_nexthop(struct fib6_info *a, struct fib6_info *b)
{
- struct fib6_nh *nha = &a->fib6_nh, *nhb = &b->fib6_nh;
+ struct fib6_nh *nha = a->fib6_nh, *nhb = b->fib6_nh;
return nha->fib_nh_dev == nhb->fib_nh_dev &&
ipv6_addr_equal(&nha->fib_nh_gw6, &nhb->fib_nh_gw6) &&
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 4bc35dd02b56..683613e7355b 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2421,9 +2421,9 @@ static struct fib6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
goto out;
for_each_fib6_node_rt_rcu(fn) {
- if (rt->fib6_nh.fib_nh_dev->ifindex != dev->ifindex)
+ if (rt->fib6_nh->fib_nh_dev->ifindex != dev->ifindex)
continue;
- if (no_gw && rt->fib6_nh.fib_nh_gw_family)
+ if (no_gw && rt->fib6_nh->fib_nh_gw_family)
continue;
if ((rt->fib6_flags & flags) != flags)
continue;
@@ -6341,7 +6341,7 @@ void addrconf_disable_policy_idev(struct inet6_dev *idev, int val)
list_for_each_entry(ifa, &idev->addr_list, if_list) {
spin_lock(&ifa->lock);
if (ifa->rt) {
- struct fib6_nh *nh = &ifa->rt->fib6_nh;
+ struct fib6_nh *nh = ifa->rt->fib6_nh;
int cpu;
rcu_read_lock();
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 87ac82f850d2..cdfb8500ccae 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -147,11 +147,15 @@ static __be32 addr_bit_set(const void *token, int fn_bit)
addr[fn_bit >> 5];
}
-struct fib6_info *fib6_info_alloc(gfp_t gfp_flags)
+struct fib6_info *fib6_info_alloc(gfp_t gfp_flags, bool with_fib6_nh)
{
struct fib6_info *f6i;
+ size_t sz = sizeof(*f6i);
- f6i = kzalloc(sizeof(*f6i), gfp_flags);
+ if (with_fib6_nh)
+ sz += sizeof(struct fib6_nh);
+
+ f6i = kzalloc(sz, gfp_flags);
if (!f6i)
return NULL;
@@ -167,7 +171,7 @@ void fib6_info_destroy_rcu(struct rcu_head *head)
WARN_ON(f6i->fib6_node);
- fib6_nh_release(&f6i->fib6_nh);
+ fib6_nh_release(f6i->fib6_nh);
ip_fib_metrics_put(f6i->fib6_metrics);
kfree(f6i);
}
@@ -912,7 +916,7 @@ static void fib6_drop_pcpu_from(struct fib6_info *f6i,
f6i->fib6_destroying = 1;
mb(); /* paired with the cmpxchg() in rt6_make_pcpu_route() */
- fib6_nh = &f6i->fib6_nh;
+ fib6_nh = f6i->fib6_nh;
__fib6_drop_pcpu_from(fib6_nh, f6i, table);
}
@@ -2301,14 +2305,14 @@ static int ipv6_route_seq_show(struct seq_file *seq, void *v)
#else
seq_puts(seq, "00000000000000000000000000000000 00 ");
#endif
- if (rt->fib6_nh.fib_nh_gw_family) {
+ if (rt->fib6_nh->fib_nh_gw_family) {
flags |= RTF_GATEWAY;
- seq_printf(seq, "%pi6", &rt->fib6_nh.fib_nh_gw6);
+ seq_printf(seq, "%pi6", &rt->fib6_nh->fib_nh_gw6);
} else {
seq_puts(seq, "00000000000000000000000000000000");
}
- dev = rt->fib6_nh.fib_nh_dev;
+ dev = rt->fib6_nh->fib_nh_dev;
seq_printf(seq, " %08x %08x %08x %08x %8s\n",
rt->fib6_metric, refcount_read(&rt->fib6_ref), 0,
flags, dev ? dev->name : "");
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 4c8e2ea8bf19..f874dde1ee85 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1293,8 +1293,8 @@ static void ndisc_router_discovery(struct sk_buff *skb)
rt = rt6_get_dflt_router(net, &ipv6_hdr(skb)->saddr, skb->dev);
if (rt) {
- neigh = ip6_neigh_lookup(&rt->fib6_nh.fib_nh_gw6,
- rt->fib6_nh.fib_nh_dev, NULL,
+ neigh = ip6_neigh_lookup(&rt->fib6_nh->fib_nh_gw6,
+ rt->fib6_nh->fib_nh_dev, NULL,
&ipv6_hdr(skb)->saddr);
if (!neigh) {
ND_PRINTK(0, err,
@@ -1323,8 +1323,8 @@ static void ndisc_router_discovery(struct sk_buff *skb)
return;
}
- neigh = ip6_neigh_lookup(&rt->fib6_nh.fib_nh_gw6,
- rt->fib6_nh.fib_nh_dev, NULL,
+ neigh = ip6_neigh_lookup(&rt->fib6_nh->fib_nh_gw6,
+ rt->fib6_nh->fib_nh_dev, NULL,
&ipv6_hdr(skb)->saddr);
if (!neigh) {
ND_PRINTK(0, err,
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b01118a3c42e..f248ce807116 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -441,12 +441,12 @@ void fib6_select_path(const struct net *net, struct fib6_result *res,
if (!fl6->mp_hash)
fl6->mp_hash = rt6_multipath_hash(net, fl6, skb, NULL);
- if (fl6->mp_hash <= atomic_read(&match->fib6_nh.fib_nh_upper_bound))
+ if (fl6->mp_hash <= atomic_read(&match->fib6_nh->fib_nh_upper_bound))
goto out;
list_for_each_entry_safe(sibling, next_sibling, &match->fib6_siblings,
fib6_siblings) {
- const struct fib6_nh *nh = &sibling->fib6_nh;
+ const struct fib6_nh *nh = sibling->fib6_nh;
int nh_upper_bound;
nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound);
@@ -460,7 +460,7 @@ void fib6_select_path(const struct net *net, struct fib6_result *res,
out:
res->f6i = match;
- res->nh = &match->fib6_nh;
+ res->nh = match->fib6_nh;
}
/*
@@ -496,13 +496,13 @@ static void rt6_device_match(struct net *net, struct fib6_result *res,
struct fib6_nh *nh;
if (!oif && ipv6_addr_any(saddr)) {
- nh = &f6i->fib6_nh;
+ nh = f6i->fib6_nh;
if (!(nh->fib_nh_flags & RTNH_F_DEAD))
goto out;
}
for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) {
- nh = &spf6i->fib6_nh;
+ nh = spf6i->fib6_nh;
if (__rt6_device_match(net, nh, saddr, oif, flags)) {
res->f6i = spf6i;
goto out;
@@ -511,14 +511,14 @@ static void rt6_device_match(struct net *net, struct fib6_result *res,
if (oif && flags & RT6_LOOKUP_F_IFACE) {
res->f6i = net->ipv6.fib6_null_entry;
- nh = &res->f6i->fib6_nh;
+ nh = res->f6i->fib6_nh;
goto out;
}
- nh = &f6i->fib6_nh;
+ nh = f6i->fib6_nh;
if (nh->fib_nh_flags & RTNH_F_DEAD) {
res->f6i = net->ipv6.fib6_null_entry;
- nh = &res->f6i->fib6_nh;
+ nh = res->f6i->fib6_nh;
}
out:
res->nh = nh;
@@ -714,7 +714,7 @@ static void __find_rr_leaf(struct fib6_info *f6i_start,
if (fib6_check_expired(f6i))
continue;
- nh = &f6i->fib6_nh;
+ nh = f6i->fib6_nh;
if (find_match(nh, f6i->fib6_flags, oif, strict, mpri, do_rr)) {
res->f6i = f6i;
res->nh = nh;
@@ -796,7 +796,7 @@ static void rt6_select(struct net *net, struct fib6_node *fn, int oif,
out:
if (!res->f6i) {
res->f6i = net->ipv6.fib6_null_entry;
- res->nh = &res->f6i->fib6_nh;
+ res->nh = res->f6i->fib6_nh;
res->fib6_flags = res->f6i->fib6_flags;
res->fib6_type = res->f6i->fib6_type;
}
@@ -1626,7 +1626,7 @@ static void fib6_nh_flush_exceptions(struct fib6_nh *nh, struct fib6_info *from)
void rt6_flush_exceptions(struct fib6_info *f6i)
{
- fib6_nh_flush_exceptions(&f6i->fib6_nh, f6i);
+ fib6_nh_flush_exceptions(f6i->fib6_nh, f6i);
}
/* Find cached rt in the hash table inside passed in rt
@@ -1721,7 +1721,7 @@ static int rt6_remove_exception_rt(struct rt6_info *rt)
if (!from || !(rt->rt6i_flags & RTF_CACHE))
return -EINVAL;
- return fib6_nh_remove_exception(&from->fib6_nh,
+ return fib6_nh_remove_exception(from->fib6_nh,
from->fib6_src.plen, rt);
}
@@ -1761,7 +1761,7 @@ static void rt6_update_exception_stamp_rt(struct rt6_info *rt)
if (!from || !(rt->rt6i_flags & RTF_CACHE))
goto unlock;
- fib6_nh_update_exception(&from->fib6_nh, from->fib6_src.plen, rt);
+ fib6_nh_update_exception(from->fib6_nh, from->fib6_src.plen, rt);
unlock:
rcu_read_unlock();
}
@@ -1927,7 +1927,7 @@ void rt6_age_exceptions(struct fib6_info *f6i,
struct fib6_gc_args *gc_args,
unsigned long now)
{
- fib6_nh_age_exceptions(&f6i->fib6_nh, gc_args, now);
+ fib6_nh_age_exceptions(f6i->fib6_nh, gc_args, now);
}
/* must be called with rcu lock held */
@@ -2456,7 +2456,7 @@ static void __ip6_rt_update_pmtu(struct dst_entry *dst, const struct sock *sk,
rcu_read_unlock();
return;
}
- res.nh = &res.f6i->fib6_nh;
+ res.nh = res.f6i->fib6_nh;
res.fib6_flags = res.f6i->fib6_flags;
res.fib6_type = res.f6i->fib6_type;
@@ -2599,7 +2599,7 @@ static struct rt6_info *__ip6_route_redirect(struct net *net,
restart:
for_each_fib6_node_rt_rcu(fn) {
res.f6i = rt;
- res.nh = &rt->fib6_nh;
+ res.nh = rt->fib6_nh;
if (fib6_check_expired(rt))
continue;
@@ -2623,7 +2623,7 @@ static struct rt6_info *__ip6_route_redirect(struct net *net,
}
res.f6i = rt;
- res.nh = &rt->fib6_nh;
+ res.nh = rt->fib6_nh;
out:
if (ret) {
ip6_hold_safe(net, &ret);
@@ -3264,7 +3264,7 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
goto out;
err = -ENOMEM;
- rt = fib6_info_alloc(gfp_flags);
+ rt = fib6_info_alloc(gfp_flags, true);
if (!rt)
goto out;
@@ -3304,7 +3304,7 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len);
rt->fib6_src.plen = cfg->fc_src_len;
#endif
- err = fib6_nh_init(net, &rt->fib6_nh, cfg, gfp_flags, extack);
+ err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack);
if (err)
goto out;
@@ -3312,7 +3312,7 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
* they would result in kernel looping; promote them to reject routes
*/
addr_type = ipv6_addr_type(&cfg->fc_dst);
- if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh.fib_nh_dev, addr_type))
+ if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, addr_type))
rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP;
if (!ipv6_addr_any(&cfg->fc_prefsrc)) {
@@ -3472,7 +3472,7 @@ static int ip6_route_del(struct fib6_config *cfg,
for_each_fib6_node_rt_rcu(fn) {
struct fib6_nh *nh;
- nh = &rt->fib6_nh;
+ nh = rt->fib6_nh;
if (cfg->fc_flags & RTF_CACHE) {
struct fib6_result res = {
.f6i = rt,
@@ -3614,7 +3614,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
if (!res.f6i)
goto out;
- res.nh = &res.f6i->fib6_nh;
+ res.nh = res.f6i->fib6_nh;
res.fib6_flags = res.f6i->fib6_flags;
res.fib6_type = res.f6i->fib6_type;
nrt = ip6_rt_cache_alloc(&res, &msg->dest, NULL);
@@ -3666,12 +3666,12 @@ static struct fib6_info *rt6_get_route_info(struct net *net,
goto out;
for_each_fib6_node_rt_rcu(fn) {
- if (rt->fib6_nh.fib_nh_dev->ifindex != ifindex)
+ if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex)
continue;
if (!(rt->fib6_flags & RTF_ROUTEINFO) ||
- !rt->fib6_nh.fib_nh_gw_family)
+ !rt->fib6_nh->fib_nh_gw_family)
continue;
- if (!ipv6_addr_equal(&rt->fib6_nh.fib_nh_gw6, gwaddr))
+ if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr))
continue;
if (!fib6_info_hold_safe(rt))
continue;
@@ -3729,7 +3729,7 @@ struct fib6_info *rt6_get_dflt_router(struct net *net,
rcu_read_lock();
for_each_fib6_node_rt_rcu(&table->tb6_root) {
- struct fib6_nh *nh = &rt->fib6_nh;
+ struct fib6_nh *nh = rt->fib6_nh;
if (dev == nh->fib_nh_dev &&
((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) &&
@@ -3981,7 +3981,7 @@ static int fib6_remove_prefsrc(struct fib6_info *rt, void *arg)
struct net *net = ((struct arg_dev_net_ip *)arg)->net;
struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr;
- if (((void *)rt->fib6_nh.fib_nh_dev == dev || !dev) &&
+ if (((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) &&
rt != net->ipv6.fib6_null_entry &&
ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) {
spin_lock_bh(&rt6_exception_lock);
@@ -4009,7 +4009,7 @@ void rt6_remove_prefsrc(struct inet6_ifaddr *ifp)
static int fib6_clean_tohost(struct fib6_info *rt, void *arg)
{
struct in6_addr *gateway = (struct in6_addr *)arg;
- struct fib6_nh *nh = &rt->fib6_nh;
+ struct fib6_nh *nh = rt->fib6_nh;
if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) &&
nh->fib_nh_gw_family && ipv6_addr_equal(gateway, &nh->fib_nh_gw6))
@@ -4059,9 +4059,9 @@ static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt)
static bool rt6_is_dead(const struct fib6_info *rt)
{
- if (rt->fib6_nh.fib_nh_flags & RTNH_F_DEAD ||
- (rt->fib6_nh.fib_nh_flags & RTNH_F_LINKDOWN &&
- ip6_ignore_linkdown(rt->fib6_nh.fib_nh_dev)))
+ if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD ||
+ (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN &&
+ ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev)))
return true;
return false;
@@ -4073,11 +4073,11 @@ static int rt6_multipath_total_weight(const struct fib6_info *rt)
int total = 0;
if (!rt6_is_dead(rt))
- total += rt->fib6_nh.fib_nh_weight;
+ total += rt->fib6_nh->fib_nh_weight;
list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) {
if (!rt6_is_dead(iter))
- total += iter->fib6_nh.fib_nh_weight;
+ total += iter->fib6_nh->fib_nh_weight;
}
return total;
@@ -4088,11 +4088,11 @@ static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total)
int upper_bound = -1;
if (!rt6_is_dead(rt)) {
- *weight += rt->fib6_nh.fib_nh_weight;
+ *weight += rt->fib6_nh->fib_nh_weight;
upper_bound = DIV_ROUND_CLOSEST_ULL((u64) (*weight) << 31,
total) - 1;
}
- atomic_set(&rt->fib6_nh.fib_nh_upper_bound, upper_bound);
+ atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound);
}
static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total)
@@ -4136,8 +4136,8 @@ static int fib6_ifup(struct fib6_info *rt, void *p_arg)
struct net *net = dev_net(arg->dev);
if (rt != net->ipv6.fib6_null_entry &&
- rt->fib6_nh.fib_nh_dev == arg->dev) {
- rt->fib6_nh.fib_nh_flags &= ~arg->nh_flags;
+ rt->fib6_nh->fib_nh_dev == arg->dev) {
+ rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags;
fib6_update_sernum_upto_root(net, rt);
rt6_multipath_rebalance(rt);
}
@@ -4165,10 +4165,10 @@ static bool rt6_multipath_uses_dev(const struct fib6_info *rt,
{
struct fib6_info *iter;
- if (rt->fib6_nh.fib_nh_dev == dev)
+ if (rt->fib6_nh->fib_nh_dev == dev)
return true;
list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings)
- if (iter->fib6_nh.fib_nh_dev == dev)
+ if (iter->fib6_nh->fib_nh_dev == dev)
return true;
return false;
@@ -4189,12 +4189,12 @@ static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt,
struct fib6_info *iter;
unsigned int dead = 0;
- if (rt->fib6_nh.fib_nh_dev == down_dev ||
- rt->fib6_nh.fib_nh_flags & RTNH_F_DEAD)
+ if (rt->fib6_nh->fib_nh_dev == down_dev ||
+ rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD)
dead++;
list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings)
- if (iter->fib6_nh.fib_nh_dev == down_dev ||
- iter->fib6_nh.fib_nh_flags & RTNH_F_DEAD)
+ if (iter->fib6_nh->fib_nh_dev == down_dev ||
+ iter->fib6_nh->fib_nh_flags & RTNH_F_DEAD)
dead++;
return dead;
@@ -4206,11 +4206,11 @@ static void rt6_multipath_nh_flags_set(struct fib6_info *rt,
{
struct fib6_info *iter;
- if (rt->fib6_nh.fib_nh_dev == dev)
- rt->fib6_nh.fib_nh_flags |= nh_flags;
+ if (rt->fib6_nh->fib_nh_dev == dev)
+ rt->fib6_nh->fib_nh_flags |= nh_flags;
list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings)
- if (iter->fib6_nh.fib_nh_dev == dev)
- iter->fib6_nh.fib_nh_flags |= nh_flags;
+ if (iter->fib6_nh->fib_nh_dev == dev)
+ iter->fib6_nh->fib_nh_flags |= nh_flags;
}
/* called with write lock held for table with rt */
@@ -4225,12 +4225,12 @@ static int fib6_ifdown(struct fib6_info *rt, void *p_arg)
switch (arg->event) {
case NETDEV_UNREGISTER:
- return rt->fib6_nh.fib_nh_dev == dev ? -1 : 0;
+ return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0;
case NETDEV_DOWN:
if (rt->should_flush)
return -1;
if (!rt->fib6_nsiblings)
- return rt->fib6_nh.fib_nh_dev == dev ? -1 : 0;
+ return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0;
if (rt6_multipath_uses_dev(rt, dev)) {
unsigned int count;
@@ -4246,10 +4246,10 @@ static int fib6_ifdown(struct fib6_info *rt, void *p_arg)
}
return -2;
case NETDEV_CHANGE:
- if (rt->fib6_nh.fib_nh_dev != dev ||
+ if (rt->fib6_nh->fib_nh_dev != dev ||
rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST))
break;
- rt->fib6_nh.fib_nh_flags |= RTNH_F_LINKDOWN;
+ rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN;
rt6_multipath_rebalance(rt);
break;
}
@@ -4331,7 +4331,7 @@ static int rt6_mtu_change_route(struct fib6_info *f6i, void *p_arg)
return 0;
arg->f6i = f6i;
- return fib6_nh_mtu_change(&f6i->fib6_nh, arg);
+ return fib6_nh_mtu_change(f6i->fib6_nh, arg);
}
void rt6_mtu_change(struct net_device *dev, unsigned int mtu)
@@ -4611,7 +4611,7 @@ static int ip6_route_multipath_add(struct fib6_config *cfg,
goto cleanup;
}
- rt->fib6_nh.fib_nh_weight = rtnh->rtnh_hops + 1;
+ rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1;
err = ip6_route_info_append(info->nl_net, &rt6_nh_list,
rt, &r_cfg);
@@ -4778,7 +4778,7 @@ static size_t rt6_nlmsg_size(struct fib6_info *rt)
nexthop_len = nla_total_size(0) /* RTA_MULTIPATH */
+ NLA_ALIGN(sizeof(struct rtnexthop))
+ nla_total_size(16) /* RTA_GATEWAY */
- + lwtunnel_get_encap_size(rt->fib6_nh.fib_nh_lws);
+ + lwtunnel_get_encap_size(rt->fib6_nh->fib_nh_lws);
nexthop_len *= rt->fib6_nsiblings;
}
@@ -4796,7 +4796,7 @@ static size_t rt6_nlmsg_size(struct fib6_info *rt)
+ nla_total_size(sizeof(struct rta_cacheinfo))
+ nla_total_size(TCP_CA_NAME_MAX) /* RTAX_CC_ALGO */
+ nla_total_size(1) /* RTA_PREF */
- + lwtunnel_get_encap_size(rt->fib6_nh.fib_nh_lws)
+ + lwtunnel_get_encap_size(rt->fib6_nh->fib_nh_lws)
+ nexthop_len;
}
@@ -4916,14 +4916,14 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
if (!mp)
goto nla_put_failure;
- if (fib_add_nexthop(skb, &rt->fib6_nh.nh_common,
- rt->fib6_nh.fib_nh_weight) < 0)
+ if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common,
+ rt->fib6_nh->fib_nh_weight) < 0)
goto nla_put_failure;
list_for_each_entry_safe(sibling, next_sibling,
&rt->fib6_siblings, fib6_siblings) {
- if (fib_add_nexthop(skb, &sibling->fib6_nh.nh_common,
- sibling->fib6_nh.fib_nh_weight) < 0)
+ if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common,
+ sibling->fib6_nh->fib_nh_weight) < 0)
goto nla_put_failure;
}
@@ -4931,7 +4931,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
} else {
unsigned char nh_flags = 0;
- if (fib_nexthop_info(skb, &rt->fib6_nh.nh_common,
+ if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common,
&nh_flags, false) < 0)
goto nla_put_failure;
@@ -4961,7 +4961,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
static bool fib6_info_uses_dev(const struct fib6_info *f6i,
const struct net_device *dev)
{
- if (f6i->fib6_nh.fib_nh_dev == dev)
+ if (f6i->fib6_nh->fib_nh_dev == dev)
return true;
if (f6i->fib6_nsiblings) {
@@ -4969,7 +4969,7 @@ static bool fib6_info_uses_dev(const struct fib6_info *f6i,
list_for_each_entry_safe(sibling, next_sibling,
&f6i->fib6_siblings, fib6_siblings) {
- if (sibling->fib6_nh.fib_nh_dev == dev)
+ if (sibling->fib6_nh->fib_nh_dev == dev)
return true;
}
}
@@ -5290,7 +5290,7 @@ static int ip6_route_dev_notify(struct notifier_block *this,
return NOTIFY_OK;
if (event == NETDEV_REGISTER) {
- net->ipv6.fib6_null_entry->fib6_nh.fib_nh_dev = dev;
+ net->ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = dev;
net->ipv6.ip6_null_entry->dst.dev = dev;
net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
@@ -5484,11 +5484,11 @@ static int __net_init ip6_route_net_init(struct net *net)
if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0)
goto out_ip6_dst_ops;
- net->ipv6.fib6_null_entry = kmemdup(&fib6_null_entry_template,
- sizeof(*net->ipv6.fib6_null_entry),
- GFP_KERNEL);
+ net->ipv6.fib6_null_entry = fib6_info_alloc(GFP_KERNEL, true);
if (!net->ipv6.fib6_null_entry)
goto out_ip6_dst_entries;
+ memcpy(net->ipv6.fib6_null_entry, &fib6_null_entry_template,
+ sizeof(*net->ipv6.fib6_null_entry));
net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
sizeof(*net->ipv6.ip6_null_entry),
@@ -5625,7 +5625,7 @@ void __init ip6_route_init_special_entries(void)
/* Registering of the loopback is done before this portion of code,
* the loopback reference in rt6_info will not be taken, do it
* manually for init_net */
- init_net.ipv6.fib6_null_entry->fib6_nh.fib_nh_dev = init_net.loopback_dev;
+ init_net.ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = init_net.loopback_dev;
init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
--
2.11.0
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