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Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c75
1 files changed, 34 insertions, 41 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 795aed6e4720..11ddc276776e 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -643,8 +643,9 @@ static void fill_route_from_fnhe(struct rtable *rt, struct fib_nh_exception *fnh
}
}
-static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
- u32 pmtu, bool lock, unsigned long expires)
+static void update_or_create_fnhe(struct fib_nh_common *nhc, __be32 daddr,
+ __be32 gw, u32 pmtu, bool lock,
+ unsigned long expires)
{
struct fnhe_hash_bucket *hash;
struct fib_nh_exception *fnhe;
@@ -653,17 +654,17 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
unsigned int i;
int depth;
- genid = fnhe_genid(dev_net(nh->fib_nh_dev));
+ genid = fnhe_genid(dev_net(nhc->nhc_dev));
hval = fnhe_hashfun(daddr);
spin_lock_bh(&fnhe_lock);
- hash = rcu_dereference(nh->nh_exceptions);
+ hash = rcu_dereference(nhc->nhc_exceptions);
if (!hash) {
hash = kcalloc(FNHE_HASH_SIZE, sizeof(*hash), GFP_ATOMIC);
if (!hash)
goto out_unlock;
- rcu_assign_pointer(nh->nh_exceptions, hash);
+ rcu_assign_pointer(nhc->nhc_exceptions, hash);
}
hash += hval;
@@ -715,13 +716,13 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
* stale, so anyone caching it rechecks if this exception
* applies to them.
*/
- rt = rcu_dereference(nh->nh_rth_input);
+ rt = rcu_dereference(nhc->nhc_rth_input);
if (rt)
rt->dst.obsolete = DST_OBSOLETE_KILL;
for_each_possible_cpu(i) {
struct rtable __rcu **prt;
- prt = per_cpu_ptr(nh->nh_pcpu_rth_output, i);
+ prt = per_cpu_ptr(nhc->nhc_pcpu_rth_output, i);
rt = rcu_dereference(*prt);
if (rt)
rt->dst.obsolete = DST_OBSOLETE_KILL;
@@ -788,10 +789,8 @@ static void __ip_do_redirect(struct rtable *rt, struct sk_buff *skb, struct flow
} else {
if (fib_lookup(net, fl4, &res, 0) == 0) {
struct fib_nh_common *nhc = FIB_RES_NHC(res);
- struct fib_nh *nh;
- nh = container_of(nhc, struct fib_nh, nh_common);
- update_or_create_fnhe(nh, fl4->daddr, new_gw,
+ update_or_create_fnhe(nhc, fl4->daddr, new_gw,
0, false,
jiffies + ip_rt_gc_timeout);
}
@@ -1039,10 +1038,8 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
rcu_read_lock();
if (fib_lookup(dev_net(dst->dev), fl4, &res, 0) == 0) {
struct fib_nh_common *nhc = FIB_RES_NHC(res);
- struct fib_nh *nh;
- nh = container_of(nhc, struct fib_nh, nh_common);
- update_or_create_fnhe(nh, fl4->daddr, 0, mtu, lock,
+ update_or_create_fnhe(nhc, fl4->daddr, 0, mtu, lock,
jiffies + ip_rt_mtu_expires);
}
rcu_read_unlock();
@@ -1328,7 +1325,7 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst)
return mtu - lwtunnel_headroom(dst->lwtstate, mtu);
}
-static void ip_del_fnhe(struct fib_nh *nh, __be32 daddr)
+static void ip_del_fnhe(struct fib_nh_common *nhc, __be32 daddr)
{
struct fnhe_hash_bucket *hash;
struct fib_nh_exception *fnhe, __rcu **fnhe_p;
@@ -1336,7 +1333,7 @@ static void ip_del_fnhe(struct fib_nh *nh, __be32 daddr)
spin_lock_bh(&fnhe_lock);
- hash = rcu_dereference_protected(nh->nh_exceptions,
+ hash = rcu_dereference_protected(nhc->nhc_exceptions,
lockdep_is_held(&fnhe_lock));
hash += hval;
@@ -1362,9 +1359,10 @@ static void ip_del_fnhe(struct fib_nh *nh, __be32 daddr)
spin_unlock_bh(&fnhe_lock);
}
-static struct fib_nh_exception *find_exception(struct fib_nh *nh, __be32 daddr)
+static struct fib_nh_exception *find_exception(struct fib_nh_common *nhc,
+ __be32 daddr)
{
- struct fnhe_hash_bucket *hash = rcu_dereference(nh->nh_exceptions);
+ struct fnhe_hash_bucket *hash = rcu_dereference(nhc->nhc_exceptions);
struct fib_nh_exception *fnhe;
u32 hval;
@@ -1378,7 +1376,7 @@ static struct fib_nh_exception *find_exception(struct fib_nh *nh, __be32 daddr)
if (fnhe->fnhe_daddr == daddr) {
if (fnhe->fnhe_expires &&
time_after(jiffies, fnhe->fnhe_expires)) {
- ip_del_fnhe(nh, daddr);
+ ip_del_fnhe(nhc, daddr);
break;
}
return fnhe;
@@ -1405,10 +1403,9 @@ u32 ip_mtu_from_fib_result(struct fib_result *res, __be32 daddr)
mtu = fi->fib_mtu;
if (likely(!mtu)) {
- struct fib_nh *nh = container_of(nhc, struct fib_nh, nh_common);
struct fib_nh_exception *fnhe;
- fnhe = find_exception(nh, daddr);
+ fnhe = find_exception(nhc, daddr);
if (fnhe && !time_after_eq(jiffies, fnhe->fnhe_expires))
mtu = fnhe->fnhe_pmtu;
}
@@ -1469,15 +1466,15 @@ static bool rt_bind_exception(struct rtable *rt, struct fib_nh_exception *fnhe,
return ret;
}
-static bool rt_cache_route(struct fib_nh *nh, struct rtable *rt)
+static bool rt_cache_route(struct fib_nh_common *nhc, struct rtable *rt)
{
struct rtable *orig, *prev, **p;
bool ret = true;
if (rt_is_input_route(rt)) {
- p = (struct rtable **)&nh->nh_rth_input;
+ p = (struct rtable **)&nhc->nhc_rth_input;
} else {
- p = (struct rtable **)raw_cpu_ptr(nh->nh_pcpu_rth_output);
+ p = (struct rtable **)raw_cpu_ptr(nhc->nhc_pcpu_rth_output);
}
orig = *p;
@@ -1574,7 +1571,6 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr,
if (fi) {
struct fib_nh_common *nhc = FIB_RES_NHC(*res);
- struct fib_nh *nh;
if (nhc->nhc_gw_family && nhc->nhc_scope == RT_SCOPE_LINK) {
rt->rt_gw_family = nhc->nhc_gw_family;
@@ -1587,15 +1583,19 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr,
ip_dst_init_metrics(&rt->dst, fi->fib_metrics);
- nh = container_of(nhc, struct fib_nh, nh_common);
#ifdef CONFIG_IP_ROUTE_CLASSID
- rt->dst.tclassid = nh->nh_tclassid;
+ {
+ struct fib_nh *nh;
+
+ nh = container_of(nhc, struct fib_nh, nh_common);
+ rt->dst.tclassid = nh->nh_tclassid;
+ }
#endif
- rt->dst.lwtstate = lwtstate_get(nh->fib_nh_lws);
+ rt->dst.lwtstate = lwtstate_get(nhc->nhc_lwtstate);
if (unlikely(fnhe))
cached = rt_bind_exception(rt, fnhe, daddr, do_cache);
else if (do_cache)
- cached = rt_cache_route(nh, rt);
+ cached = rt_cache_route(nhc, rt);
if (unlikely(!cached)) {
/* Routes we intend to cache in nexthop exception or
* FIB nexthop have the DST_NOCACHE bit clear.
@@ -1756,7 +1756,6 @@ static int __mkroute_input(struct sk_buff *skb,
struct net_device *dev = nhc->nhc_dev;
struct fib_nh_exception *fnhe;
struct rtable *rth;
- struct fib_nh *nh;
int err;
struct in_device *out_dev;
bool do_cache;
@@ -1804,13 +1803,12 @@ static int __mkroute_input(struct sk_buff *skb,
}
}
- nh = container_of(nhc, struct fib_nh, nh_common);
- fnhe = find_exception(nh, daddr);
+ fnhe = find_exception(nhc, daddr);
if (do_cache) {
if (fnhe)
rth = rcu_dereference(fnhe->fnhe_rth_input);
else
- rth = rcu_dereference(nh->nh_rth_input);
+ rth = rcu_dereference(nhc->nhc_rth_input);
if (rt_cache_valid(rth)) {
skb_dst_set_noref(skb, &rth->dst);
goto out;
@@ -2105,10 +2103,8 @@ local_input:
if (res->fi) {
if (!itag) {
struct fib_nh_common *nhc = FIB_RES_NHC(*res);
- struct fib_nh *nh;
- nh = container_of(nhc, struct fib_nh, nh_common);
- rth = rcu_dereference(nh->nh_rth_input);
+ rth = rcu_dereference(nhc->nhc_rth_input);
if (rt_cache_valid(rth)) {
skb_dst_set_noref(skb, &rth->dst);
err = 0;
@@ -2139,7 +2135,6 @@ local_input:
if (do_cache) {
struct fib_nh_common *nhc = FIB_RES_NHC(*res);
- struct fib_nh *nh;
rth->dst.lwtstate = lwtstate_get(nhc->nhc_lwtstate);
if (lwtunnel_input_redirect(rth->dst.lwtstate)) {
@@ -2148,8 +2143,7 @@ local_input:
rth->dst.input = lwtunnel_input;
}
- nh = container_of(nhc, struct fib_nh, nh_common);
- if (unlikely(!rt_cache_route(nh, rth)))
+ if (unlikely(!rt_cache_route(nhc, rth)))
rt_add_uncached_list(rth);
}
skb_dst_set(skb, &rth->dst);
@@ -2321,10 +2315,9 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
do_cache &= fi != NULL;
if (fi) {
struct fib_nh_common *nhc = FIB_RES_NHC(*res);
- struct fib_nh *nh = container_of(nhc, struct fib_nh, nh_common);
struct rtable __rcu **prth;
- fnhe = find_exception(nh, fl4->daddr);
+ fnhe = find_exception(nhc, fl4->daddr);
if (!do_cache)
goto add;
if (fnhe) {
@@ -2337,7 +2330,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
do_cache = false;
goto add;
}
- prth = raw_cpu_ptr(nh->nh_pcpu_rth_output);
+ prth = raw_cpu_ptr(nhc->nhc_pcpu_rth_output);
}
rth = rcu_dereference(*prth);
if (rt_cache_valid(rth) && dst_hold_safe(&rth->dst))
generated by cgit (git 2.34.1) at 2024-06-14 14:57:30 +0000