net: netfilter: add kfunc helper to update ct timeout

index 69e6c6a218be..02b7115b92d0 100644
@@ -205,6 +205,7 @@ bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
 		       u_int16_t l3num, struct net *net,
 		       struct nf_conntrack_tuple *tuple);
 
+void nf_ct_refresh_timeout(struct nf_conn *ct, u32 extra_jiffies);
 void __nf_ct_refresh_acct(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			  const struct sk_buff *skb,
 			  u32 extra_jiffies, bool do_acct);

index bc4d5cd63a94..d6dcadf0e016 100644
@@ -217,16 +217,36 @@ void bpf_ct_release(struct nf_conn *nfct)
 	nf_ct_put(nfct);
 }
 
+/* bpf_ct_refresh_timeout - Refresh nf_conn object
+ *
+ * Refresh timeout associated to the provided connection tracking entry.
+ * This must be invoked for referenced PTR_TO_BTF_ID.
+ *
+ * Parameters:
+ * @nf_conn      - Pointer to referenced nf_conn object, obtained using
+ *		   bpf_xdp_ct_lookup or bpf_skb_ct_lookup.
+ * @timeout      - delta time in msecs used to increase the ct entry lifetime.
+ */
+void bpf_ct_refresh_timeout(struct nf_conn *nfct, u32 timeout)
+{
+	if (!nfct)
+		return;
+
+	nf_ct_refresh_timeout(nfct, msecs_to_jiffies(timeout));
+}
+
 __diag_pop()
 
 BTF_SET_START(nf_ct_xdp_check_kfunc_ids)
 BTF_ID(func, bpf_xdp_ct_lookup)
 BTF_ID(func, bpf_ct_release)
+BTF_ID(func, bpf_ct_refresh_timeout);
 BTF_SET_END(nf_ct_xdp_check_kfunc_ids)
 
 BTF_SET_START(nf_ct_tc_check_kfunc_ids)
 BTF_ID(func, bpf_skb_ct_lookup)
 BTF_ID(func, bpf_ct_release)
+BTF_ID(func, bpf_ct_refresh_timeout);
 BTF_SET_END(nf_ct_tc_check_kfunc_ids)
 
 BTF_SET_START(nf_ct_acquire_kfunc_ids)

index 0164e5f522e8..f43e743728bd 100644
@@ -2030,16 +2030,11 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_alter_reply);
 
-/* Refresh conntrack for this many jiffies and do accounting if do_acct is 1 */
-void __nf_ct_refresh_acct(struct nf_conn *ct,
-			  enum ip_conntrack_info ctinfo,
-			  const struct sk_buff *skb,
-			  u32 extra_jiffies,
-			  bool do_acct)
+void nf_ct_refresh_timeout(struct nf_conn *ct, u32 extra_jiffies)
 {
 	/* Only update if this is not a fixed timeout */
 	if (test_bit(IPS_FIXED_TIMEOUT_BIT, &ct->status))
-		goto acct;
+		return;
 
 	/* If not in hash table, timer will not be active yet */
 	if (nf_ct_is_confirmed(ct))

@@ -2047,7 +2042,17 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
 
 	if (READ_ONCE(ct->timeout) != extra_jiffies)
 		WRITE_ONCE(ct->timeout, extra_jiffies);
-acct:
+}
+
+/* Refresh conntrack for this many jiffies and do accounting if do_acct is 1 */
+void __nf_ct_refresh_acct(struct nf_conn *ct,
+			  enum ip_conntrack_info ctinfo,
+			  const struct sk_buff *skb,
+			  u32 extra_jiffies,
+			  bool do_acct)
+{
+	nf_ct_refresh_timeout(ct, extra_jiffies);
+
 	if (do_acct)
 		nf_ct_acct_update(ct, CTINFO2DIR(ctinfo), skb->len);
 }

index dd30b1e3a67c..285687d2f7b3 100644
@@ -18,6 +18,13 @@ void test_bpf_nf_ct(int mode)
 		.repeat = 1,
 	);
 
+	/* Flush previous nft ct entries */
+	ASSERT_OK(system("conntrack -F"), "flush ct entries");
+	/* Let's create a nft ct entry to perform lookup */
+	ASSERT_OK(system("conntrack -I -s 1.1.1.1 -d 2.2.2.2 --protonum 6  \
+			  --state ESTABLISHED --timeout 3600 --sport 12345 \
+			  --dport 1000 --zone 0"), "create ct entry");
+
 	skel = test_bpf_nf__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "test_bpf_nf__open_and_load"))
 		return;

@@ -39,6 +46,9 @@ void test_bpf_nf_ct(int mode)
 	ASSERT_EQ(skel->bss->test_enonet_netns_id, -ENONET, "Test ENONET for bad but valid netns_id");
 	ASSERT_EQ(skel->bss->test_enoent_lookup, -ENOENT, "Test ENOENT for failed lookup");
 	ASSERT_EQ(skel->bss->test_eafnosupport, -EAFNOSUPPORT, "Test EAFNOSUPPORT for invalid len__tuple");
+	ASSERT_EQ(skel->bss->test_succ_lookup, 0, "Test for successful lookup");
+	ASSERT_EQ(skel->bss->test_delta_timeout, 10, "Test for ct timeout update");
+
 end:
 	test_bpf_nf__destroy(skel);
 }

index f00a9731930e..3eb36679a0b5 100644
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <vmlinux.h>
 #include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
 
 #define EAFNOSUPPORT 97
 #define EPROTO 71

@@ -8,6 +9,8 @@
 #define EINVAL 22
 #define ENOENT 2
 
+extern unsigned long CONFIG_HZ __kconfig;
+
 int test_einval_bpf_tuple = 0;
 int test_einval_reserved = 0;
 int test_einval_netns_id = 0;

@@ -16,6 +19,8 @@ int test_eproto_l4proto = 0;
 int test_enonet_netns_id = 0;
 int test_enoent_lookup = 0;
 int test_eafnosupport = 0;
+int test_succ_lookup = 0;
+u32 test_delta_timeout = 0;
 
 struct nf_conn;
 

@@ -31,6 +36,7 @@ struct nf_conn *bpf_xdp_ct_lookup(struct xdp_md *, struct bpf_sock_tuple *, u32,
 struct nf_conn *bpf_skb_ct_lookup(struct __sk_buff *, struct bpf_sock_tuple *, u32,
 				  struct bpf_ct_opts___local *, u32) __ksym;
 void bpf_ct_release(struct nf_conn *) __ksym;
+void bpf_ct_refresh_timeout(struct nf_conn *, u32) __ksym;
 
 static __always_inline void
 nf_ct_test(struct nf_conn *(*func)(void *, struct bpf_sock_tuple *, u32,

@@ -99,6 +105,22 @@ nf_ct_test(struct nf_conn *(*func)(void *, struct bpf_sock_tuple *, u32,
 		bpf_ct_release(ct);
 	else
 		test_eafnosupport = opts_def.error;
+
+	bpf_tuple.ipv4.saddr = 0x01010101; /* src IP 1.1.1.1 */
+	bpf_tuple.ipv4.daddr = 0x02020202; /* dst IP 2.2.2.2 */
+	bpf_tuple.ipv4.sport = bpf_htons(12345); /* src port */
+	bpf_tuple.ipv4.dport = bpf_htons(1000);  /* dst port */
+	ct = func(ctx, &bpf_tuple, sizeof(bpf_tuple.ipv4), &opts_def,
+		  sizeof(opts_def));
+	if (ct) {
+		/* update ct entry timeout */
+		bpf_ct_refresh_timeout(ct, 10000);
+		test_delta_timeout = ct->timeout - bpf_jiffies64();
+		test_delta_timeout /= CONFIG_HZ;
+		bpf_ct_release(ct);
+	} else {
+		test_succ_lookup = opts_def.error;
+	}
 }
 
 SEC("xdp")