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-rw-r--r--include/net/protocol.h2
-rw-r--r--include/net/route.h8
-rw-r--r--include/net/tcp.h2
-rw-r--r--net/ipv4/arp.c2
-rw-r--r--net/ipv4/ip_fragment.c2
-rw-r--r--net/ipv4/ip_input.c5
-rw-r--r--net/ipv4/route.c8
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv4/xfrm4_input.c2
9 files changed, 20 insertions, 15 deletions
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 967b926cbfb1..7cfc8f76914d 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -37,7 +37,7 @@
/* This is used to register protocols. */
struct net_protocol {
- int (*early_demux)(struct sk_buff *skb);
+ int (*early_demux)(struct sk_buff *skb, bool *nocache);
int (*handler)(struct sk_buff *skb);
void (*err_handler)(struct sk_buff *skb, u32 info);
int (*gso_send_check)(struct sk_buff *skb);
diff --git a/include/net/route.h b/include/net/route.h
index 47eb25ac1f7f..6361f9335774 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -201,18 +201,18 @@ static inline struct rtable *ip_route_output_gre(struct net *net, struct flowi4
}
extern int ip_route_input_common(struct sk_buff *skb, __be32 dst, __be32 src,
- u8 tos, struct net_device *devin, bool noref);
+ u8 tos, struct net_device *devin, bool noref, bool nocache);
static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src,
u8 tos, struct net_device *devin)
{
- return ip_route_input_common(skb, dst, src, tos, devin, false);
+ return ip_route_input_common(skb, dst, src, tos, devin, false, false);
}
static inline int ip_route_input_noref(struct sk_buff *skb, __be32 dst, __be32 src,
- u8 tos, struct net_device *devin)
+ u8 tos, struct net_device *devin, bool nocache)
{
- return ip_route_input_common(skb, dst, src, tos, devin, true);
+ return ip_route_input_common(skb, dst, src, tos, devin, true, nocache);
}
extern void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu,
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 6660ffc4963d..917ed2e55e8c 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -325,7 +325,7 @@ extern void tcp_v4_err(struct sk_buff *skb, u32);
extern void tcp_shutdown (struct sock *sk, int how);
-extern int tcp_v4_early_demux(struct sk_buff *skb);
+extern int tcp_v4_early_demux(struct sk_buff *skb, bool *nocache);
extern int tcp_v4_rcv(struct sk_buff *skb);
extern struct inet_peer *tcp_v4_get_peer(struct sock *sk);
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 2e560f0c757d..6a9795944369 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -828,7 +828,7 @@ static int arp_process(struct sk_buff *skb)
}
if (arp->ar_op == htons(ARPOP_REQUEST) &&
- ip_route_input_noref(skb, tip, sip, 0, dev) == 0) {
+ ip_route_input_noref(skb, tip, sip, 0, dev, false) == 0) {
rt = skb_rtable(skb);
addr_type = rt->rt_type;
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 8d07c973409c..978d55f256ea 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -259,7 +259,7 @@ static void ip_expire(unsigned long arg)
skb_dst_drop(head);
iph = ip_hdr(head);
err = ip_route_input_noref(head, iph->daddr, iph->saddr,
- iph->tos, head->dev);
+ iph->tos, head->dev, false);
if (err)
goto out_rcu_unlock;
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 2a39204de5bc..7be54c8dcbe2 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -326,6 +326,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
*/
if (skb_dst(skb) == NULL) {
int err = -ENOENT;
+ bool nocache = false;
if (sysctl_ip_early_demux) {
const struct net_protocol *ipprot;
@@ -334,13 +335,13 @@ static int ip_rcv_finish(struct sk_buff *skb)
rcu_read_lock();
ipprot = rcu_dereference(inet_protos[protocol]);
if (ipprot && ipprot->early_demux)
- err = ipprot->early_demux(skb);
+ err = ipprot->early_demux(skb, &nocache);
rcu_read_unlock();
}
if (err) {
err = ip_route_input_noref(skb, iph->daddr, iph->saddr,
- iph->tos, skb->dev);
+ iph->tos, skb->dev, nocache);
if (unlikely(err)) {
if (err == -EXDEV)
NET_INC_STATS_BH(dev_net(skb->dev),
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 81533e3a23d1..fdc7900f9d7a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2214,7 +2214,7 @@ static int ip_mkroute_input(struct sk_buff *skb,
*/
static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
- u8 tos, struct net_device *dev)
+ u8 tos, struct net_device *dev, bool nocache)
{
struct fib_result res;
struct in_device *in_dev = __in_dev_get_rcu(dev);
@@ -2353,6 +2353,8 @@ local_input:
rth->dst.error= -err;
rth->rt_flags &= ~RTCF_LOCAL;
}
+ if (nocache)
+ rth->dst.flags |= DST_NOCACHE;
hash = rt_hash(daddr, saddr, fl4.flowi4_iif, rt_genid(net));
rth = rt_intern_hash(hash, rth, skb, fl4.flowi4_iif);
err = 0;
@@ -2395,7 +2397,7 @@ martian_source_keep_err:
}
int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
- u8 tos, struct net_device *dev, bool noref)
+ u8 tos, struct net_device *dev, bool noref, bool nocache)
{
struct rtable *rth;
unsigned int hash;
@@ -2471,7 +2473,7 @@ skip_cache:
rcu_read_unlock();
return -EINVAL;
}
- res = ip_route_input_slow(skb, daddr, saddr, tos, dev);
+ res = ip_route_input_slow(skb, daddr, saddr, tos, dev, nocache);
rcu_read_unlock();
return res;
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1781dc650b9d..33aabd4fc20f 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1673,7 +1673,7 @@ csum_err:
}
EXPORT_SYMBOL(tcp_v4_do_rcv);
-int tcp_v4_early_demux(struct sk_buff *skb)
+int tcp_v4_early_demux(struct sk_buff *skb, bool *no_dst_cache)
{
struct net *net = dev_net(skb->dev);
const struct iphdr *iph;
@@ -1719,6 +1719,8 @@ int tcp_v4_early_demux(struct sk_buff *skb)
}
}
}
+ } else {
+ *no_dst_cache = true;
}
out_err:
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 06814b6216dc..eee636b191b9 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -28,7 +28,7 @@ static inline int xfrm4_rcv_encap_finish(struct sk_buff *skb)
const struct iphdr *iph = ip_hdr(skb);
if (ip_route_input_noref(skb, iph->daddr, iph->saddr,
- iph->tos, skb->dev))
+ iph->tos, skb->dev, false))
goto drop;
}
return dst_input(skb);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-25 11:02:52 +0000