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Update NDPI patch

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This commit is contained in:
Ycarus (Yannick Chabanois) 2023-12-22 20:23:25 +01:00
parent 9ccde1ef2d
commit eb899ee09f
2 changed files with 32 additions and 32 deletions
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32
6.1/target/linux/generic/hack-6.1/998-ndpi-hook.patch
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@ -5,9 +5,9 @@ diff -urpN linux-6.1.38.old/include/net/netfilter/nf_conntrack.h linux-6.1.38/in
return net_generic(net, nf_conntrack_net_id);
}
+#ifdef CONFIG_NDPI_HOOK
+void register_ndpi_hook(void (*hook)(struct nf_conn *));
+void unregister_ndpi_hook(void);
+#ifdef CONFIG_NF_CONNTRACK_DESTROY_HOOK
+void register_nf_ct_destroy_hook(void (*hook)(struct nf_conn *));
+void unregister_nf_ct_destroy_hook(void);
+#endif
+
#define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count)
@ -20,7 +20,7 @@ diff -urpN linux-6.1.38.old/net/netfilter/Kconfig linux-6.1.38/net/netfilter/Kco
If this option is enabled, the kernel will include support
for passive OS fingerprint via NFNETLINK.
+config NDPI_HOOK
+config NF_CONNTRACK_DESTROY_HOOK
+ bool
+
config NF_CONNTRACK
@ -28,7 +28,7 @@ diff -urpN linux-6.1.38.old/net/netfilter/Kconfig linux-6.1.38/net/netfilter/Kco
default m if NETFILTER_ADVANCED=n
select NF_DEFRAG_IPV4
select NF_DEFRAG_IPV6 if IPV6 != n
+ select NDPI_HOOK
+ select NF_CONNTRACK_DESTROY_HOOK
help
Connection tracking keeps a record of what packets have passed
through your machine, in order to figure out how they are related
@ -39,28 +39,28 @@ diff -urpN linux-6.1.38.old/net/netfilter/nf_conntrack_core.c linux-6.1.38/net/n
#endif
}
+#ifdef CONFIG_NDPI_HOOK
+#ifdef CONFIG_NF_CONNTRACK_DESTROY_HOOK
+
+static void (*ndpi_hook)(struct nf_conn *) __rcu __read_mostly = NULL;
+static void (*nf_ct_destroy_hook)(struct nf_conn *) __rcu __read_mostly = NULL;
+
+void register_ndpi_hook(void (*hook)(struct nf_conn *))
+void register_nf_ct_destroy_hook(void (*hook)(struct nf_conn *))
+{
+ rcu_assign_pointer(ndpi_hook, hook);
+ rcu_assign_pointer(nf_ct_destroy_hook, hook);
+}
+EXPORT_SYMBOL(register_ndpi_hook);
+EXPORT_SYMBOL(register_nf_ct_destroy_hook);
+
+void unregister_ndpi_hook(void)
+void unregister_nf_ct_destroy_hook(void)
+{
+ rcu_assign_pointer(ndpi_hook, NULL);
+ rcu_assign_pointer(nf_ct_destroy_hook, NULL);
+}
+
+EXPORT_SYMBOL(unregister_ndpi_hook);
+EXPORT_SYMBOL(unregister_nf_ct_destroy_hook);
+#endif
+
void nf_ct_destroy(struct nf_conntrack *nfct)
{
struct nf_conn *ct = (struct nf_conn *)nfct;
+#ifdef CONFIG_NDPI_HOOK
+#ifdef CONFIG_NF_CONNTRACK_DESTROY_HOOK
+ void (*hook)(struct nf_conn *);
+#endif
@ -70,8 +70,8 @@ diff -urpN linux-6.1.38.old/net/netfilter/nf_conntrack_core.c linux-6.1.38/net/n
return;
}
+#ifdef CONFIG_NDPI_HOOK
+ hook = rcu_dereference(ndpi_hook);
+#ifdef CONFIG_NF_CONNTRACK_DESTROY_HOOK
+ hook = rcu_dereference(nf_ct_destroy_hook);
+ if (hook)
+ hook(ct);
+#endif