Initial commit

2025-06-24 13:14:22 +02:00
commit 4002f145fc
9002 changed files with 1731834 additions and 0 deletions
--- a/target/linux/ipq806x/patches-5.4/999-01b-shortcut-fe-support.patch
+++ b/target/linux/ipq806x/patches-5.4/999-01b-shortcut-fe-support.patch
@@ -0,0 +1,82 @@
+--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
+@@ -825,6 +825,9 @@
+ 	__u8			decrypted:1;
+ #endif
+ 	__u8			gro_skip:1;
+#ifdef CONFIG_SHORTCUT_FE
+	__u8			fast_forwarded:1;
+#endif
+ 
+ #ifdef CONFIG_NET_SCHED
+ 	__u16			tc_index;	/* traffic control index */
+ #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
+ int br_multicast_list_adjacent(struct net_device *dev,
+--- a/net/Kconfig
+++ b/net/Kconfig
+@@ -473,3 +473,6 @@ config HAVE_CBPF_JIT
+ # Extended BPF JIT (eBPF)
+ config HAVE_EBPF_JIT
+ 	bool
+
+config SHORTCUT_FE
+	bool "Enables kernel network stack path for Shortcut  Forwarding Engine
+--- a/net/core/dev.c
+++ b/net/core/dev.c
+@@ -3192,8 +3192,17 @@ static int xmit_one(struct sk_buff *skb,
+ 	unsigned int len;
+ 	int rc;
+ 
+#ifdef CONFIG_SHORTCUT_FE
+	/* If this skb has been fast forwarded then we don't want it to
+	 * go to any taps (by definition we're trying to bypass them).
+	 */
+	if (!skb->fast_forwarded) {
+#endif
+ 	if (dev_nit_active(dev))
+ 		dev_queue_xmit_nit(skb, dev);
+#ifdef CONFIG_SHORTCUT_FE
+	}
+#endif
+ 
+ #ifdef CONFIG_ETHERNET_PACKET_MANGLE
+ 	if (!dev->eth_mangle_tx ||
+@@ -4684,6 +4693,11 @@ void netdev_rx_handler_unregister(struct
+ }
+ EXPORT_SYMBOL_GPL(netdev_rx_handler_unregister);
+ 
+#ifdef CONFIG_SHORTCUT_FE
+int (*athrs_fast_nat_recv)(struct sk_buff *skb) __rcu __read_mostly;
+EXPORT_SYMBOL_GPL(athrs_fast_nat_recv);
+#endif
+
+ /*
+  * Limit the use of PFMEMALLOC reserves to those protocols that implement
+  * the special handling of PFMEMALLOC skbs.
+@@ -4733,6 +4747,9 @@ static int __netif_receive_skb_core(stru
+ 	bool deliver_exact = false;
+ 	int ret = NET_RX_DROP;
+ 	__be16 type;
+#ifdef CONFIG_SHORTCUT_FE
+	int (*fast_recv)(struct sk_buff *skb);
+#endif
+ 
+ 	net_timestamp_check(!netdev_tstamp_prequeue, skb);
+ 
+@@ -4773,6 +4790,16 @@ another_round:
+ 			goto out;
+ 	}
+ 
+#ifdef CONFIG_SHORTCUT_FE
+	fast_recv = rcu_dereference(athrs_fast_nat_recv);
+	if (fast_recv) {
+		if (fast_recv(skb)) {
+			ret = NET_RX_SUCCESS;
+			goto out;
+		}
+	}
+#endif
+
+ 	if (skb_skip_tc_classify(skb))
+ 		goto skip_classify;
+