kernel: remove support for kernel 4.19

We use 5.4 on all targets by default, and 4.19 has never been released
in a stable version. There is no reason to keep it.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 152 deletions

diff --git a/target/linux/generic/pending-4.19/680-NET-skip-GRO-for-foreign-MAC-addresses.patch b/target/linux/generic/pending-4.19/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
deleted file mode 100644
index c01a090b73..0000000000
--- a/target/linux/generic/pending-4.19/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
+++ /dev/null
@@ -1,152 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Subject: net: replace GRO optimization patch with a new one that supports VLANs/bridges with different MAC addresses
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- include/linux/netdevice.h |  2 ++
- include/linux/skbuff.h    |  3 ++-
- net/core/dev.c            | 48 +++++++++++++++++++++++++++++++++++++++++++++++
- net/ethernet/eth.c        | 18 +++++++++++++++++-
- 4 files changed, 69 insertions(+), 2 deletions(-)
-
---- a/include/linux/netdevice.h
-+++ b/include/linux/netdevice.h
-@@ -1891,6 +1891,8 @@ struct net_device {
- 	struct netdev_hw_addr_list	mc;
- 	struct netdev_hw_addr_list	dev_addrs;
- 
-+	unsigned char		local_addr_mask[MAX_ADDR_LEN];
-+
- #ifdef CONFIG_SYSFS
- 	struct kset		*queues_kset;
- #endif
---- a/include/linux/skbuff.h
-+++ b/include/linux/skbuff.h
-@@ -799,6 +799,7 @@ struct sk_buff {
- #ifdef CONFIG_TLS_DEVICE
- 	__u8			decrypted:1;
- #endif
-+	__u8			gro_skip:1;
- 
- #ifdef CONFIG_NET_SCHED
- 	__u16			tc_index;	/* traffic control index */
---- a/net/core/dev.c
-+++ b/net/core/dev.c
-@@ -5461,6 +5461,9 @@ static enum gro_result dev_gro_receive(s
- 	int same_flow;
- 	int grow;
- 
-+	if (skb->gro_skip)
-+		goto normal;
-+
- 	if (netif_elide_gro(skb->dev))
- 		goto normal;
- 
-@@ -7119,6 +7122,48 @@ static void __netdev_adjacent_dev_unlink
- 					   &upper_dev->adj_list.lower);
- }
- 
-+static void __netdev_addr_mask(unsigned char *mask, const unsigned char *addr,
-+			       struct net_device *dev)
-+{
-+	int i;
-+
-+	for (i = 0; i < dev->addr_len; i++)
-+		mask[i] |= addr[i] ^ dev->dev_addr[i];
-+}
-+
-+static void __netdev_upper_mask(unsigned char *mask, struct net_device *dev,
-+				struct net_device *lower)
-+{
-+	struct net_device *cur;
-+	struct list_head *iter;
-+
-+	netdev_for_each_upper_dev_rcu(dev, cur, iter) {
-+		__netdev_addr_mask(mask, cur->dev_addr, lower);
-+		__netdev_upper_mask(mask, cur, lower);
-+	}
-+}
-+
-+static void __netdev_update_addr_mask(struct net_device *dev)
-+{
-+	unsigned char mask[MAX_ADDR_LEN];
-+	struct net_device *cur;
-+	struct list_head *iter;
-+
-+	memset(mask, 0, sizeof(mask));
-+	__netdev_upper_mask(mask, dev, dev);
-+	memcpy(dev->local_addr_mask, mask, dev->addr_len);
-+
-+	netdev_for_each_lower_dev(dev, cur, iter)
-+		__netdev_update_addr_mask(cur);
-+}
-+
-+static void netdev_update_addr_mask(struct net_device *dev)
-+{
-+	rcu_read_lock();
-+	__netdev_update_addr_mask(dev);
-+	rcu_read_unlock();
-+}
-+
- static int __netdev_upper_dev_link(struct net_device *dev,
- 				   struct net_device *upper_dev, bool master,
- 				   void *upper_priv, void *upper_info,
-@@ -7169,6 +7214,7 @@ static int __netdev_upper_dev_link(struc
- 	if (ret)
- 		return ret;
- 
-+	netdev_update_addr_mask(dev);
- 	ret = call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
- 					    &changeupper_info.info);
- 	ret = notifier_to_errno(ret);
-@@ -7261,6 +7307,7 @@ void netdev_upper_dev_unlink(struct net_
- 
- 	__netdev_adjacent_dev_unlink_neighbour(dev, upper_dev);
- 
-+	netdev_update_addr_mask(dev);
- 	call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
- 				      &changeupper_info.info);
- 
-@@ -7900,6 +7947,7 @@ int dev_set_mac_address(struct net_devic
- 	if (err)
- 		return err;
- 	dev->addr_assign_type = NET_ADDR_SET;
-+	netdev_update_addr_mask(dev);
- 	call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
- 	add_device_randomness(dev->dev_addr, dev->addr_len);
- 	return 0;
---- a/net/ethernet/eth.c
-+++ b/net/ethernet/eth.c
-@@ -144,6 +144,18 @@ u32 eth_get_headlen(void *data, unsigned
- }
- EXPORT_SYMBOL(eth_get_headlen);
- 
-+static inline bool
-+eth_check_local_mask(const void *addr1, const void *addr2, const void *mask)
-+{
-+	const u16 *a1 = addr1;
-+	const u16 *a2 = addr2;
-+	const u16 *m = mask;
-+
-+	return (((a1[0] ^ a2[0]) & ~m[0]) |
-+		((a1[1] ^ a2[1]) & ~m[1]) |
-+		((a1[2] ^ a2[2]) & ~m[2]));
-+}
-+
- /**
-  * eth_type_trans - determine the packet's protocol ID.
-  * @skb: received socket data
-@@ -172,8 +184,12 @@ __be16 eth_type_trans(struct sk_buff *sk
- 			skb->pkt_type = PACKET_MULTICAST;
- 	}
- 	else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
--						   dev->dev_addr)))
-+						   dev->dev_addr))) {
- 		skb->pkt_type = PACKET_OTHERHOST;
-+		if (eth_check_local_mask(eth->h_dest, dev->dev_addr,
-+					 dev->local_addr_mask))
-+			skb->gro_skip = 1;
-+	}
- 
- 	/*
- 	 * Some variants of DSA tagging don't have an ethertype field