kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 401 deletions

diff --git a/target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch b/target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch
deleted file mode 100644
index de337026d3..0000000000
--- a/target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch
+++ /dev/null
@@ -1,401 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 11 Oct 2020 22:28:32 +0200
-Subject: [PATCH] net: ethernet: mediatek: mtk_eth_soc: add flow offloading
- support
-
-Only supports IPv4 for now
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- create mode 100644 drivers/net/ethernet/mediatek/mtk_offload.c
- create mode 100644 drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c
-
---- a/drivers/net/ethernet/mediatek/Makefile
-+++ b/drivers/net/ethernet/mediatek/Makefile
-@@ -4,4 +4,4 @@
- #
- 
- obj-$(CONFIG_NET_MEDIATEK_SOC)                 += mtk_eth.o
--mtk_eth-y := mtk_eth_soc.o mtk_sgmii.o mtk_eth_path.o mtk_ppe.o
-+mtk_eth-y := mtk_eth_soc.o mtk_sgmii.o mtk_eth_path.o mtk_ppe.o mtk_ppe_debugfs.o mtk_offload.o
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -20,6 +20,8 @@
- #include <linux/pinctrl/devinfo.h>
- #include <linux/phylink.h>
- #include <linux/jhash.h>
-+#include <linux/netfilter.h>
-+#include <net/netfilter/nf_flow_table.h>
- #include <net/dsa.h>
- 
- #include "mtk_eth_soc.h"
-@@ -1348,8 +1350,12 @@ static int mtk_poll_rx(struct napi_struc
- 		    (trxd.rxd2 & RX_DMA_VTAG))
- 			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
- 					       RX_DMA_VID(trxd.rxd3));
--		skb_record_rx_queue(skb, 0);
--		napi_gro_receive(napi, skb);
-+		if (mtk_offload_check_rx(eth, skb, trxd.rxd4) == 0) {
-+			skb_record_rx_queue(skb, 0);
-+			napi_gro_receive(napi, skb);
-+		} else {
-+			dev_kfree_skb(skb);
-+		}
- 
- skip_rx:
- 		ring->data[idx] = new_data;
-@@ -2879,6 +2885,25 @@ static int mtk_set_rxnfc(struct net_devi
- 	return ret;
- }
- 
-+static int
-+mtk_flow_offload(enum flow_offload_type type, struct flow_offload *flow,
-+		struct flow_offload_hw_path *src,
-+		struct flow_offload_hw_path *dest)
-+{
-+	struct mtk_mac *mac = netdev_priv(src->dev);
-+	struct mtk_eth *eth = mac->hw;
-+
-+	if (!eth->soc->offload_version)
-+		return -EINVAL;
-+
-+	if (src->dev->base_addr != dest->dev->base_addr)
-+		return -EINVAL;
-+
-+	mac = netdev_priv(src->dev);
-+
-+	return mtk_flow_offload_add(eth, type, flow, src, dest);
-+}
-+
- static const struct ethtool_ops mtk_ethtool_ops = {
- 	.get_link_ksettings	= mtk_get_link_ksettings,
- 	.set_link_ksettings	= mtk_set_link_ksettings,
-@@ -2910,6 +2935,7 @@ static const struct net_device_ops mtk_n
- #ifdef CONFIG_NET_POLL_CONTROLLER
- 	.ndo_poll_controller	= mtk_poll_controller,
- #endif
-+	.ndo_flow_offload       = mtk_flow_offload,
- };
- 
- static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
-@@ -3175,6 +3201,10 @@ static int mtk_probe(struct platform_dev
- 				   eth->base + MTK_ETH_PPE_BASE, 2);
- 		if (err)
- 			goto err_free_dev;
-+
-+		err = mtk_flow_offload_init(eth);
-+		if (err)
-+			goto err_free_dev;
- 	}
- 
- 	for (i = 0; i < MTK_MAX_DEVS; i++) {
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-@@ -949,6 +949,7 @@ struct mtk_eth {
- 	int				ip_align;
- 
- 	struct mtk_ppe			ppe;
-+	struct flow_offload __rcu       **foe_flow_table;
- };
- 
- /* struct mtk_mac -	the structure that holds the info about the MACs of the
-@@ -993,4 +994,12 @@ int mtk_gmac_sgmii_path_setup(struct mtk
- int mtk_gmac_gephy_path_setup(struct mtk_eth *eth, int mac_id);
- int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id);
- 
-+int mtk_flow_offload_init(struct mtk_eth *eth);
-+int mtk_flow_offload_add(struct mtk_eth *eth,
-+			 enum flow_offload_type type,
-+			 struct flow_offload *flow,
-+			 struct flow_offload_hw_path *src,
-+			 struct flow_offload_hw_path *dest);
-+int mtk_offload_check_rx(struct mtk_eth *eth, struct sk_buff *skb, u32 rxd4);
-+
- #endif /* MTK_ETH_H */
---- /dev/null
-+++ b/drivers/net/ethernet/mediatek/mtk_offload.c
-@@ -0,0 +1,146 @@
-+/*   This program is free software; you can redistribute it and/or modify
-+ *   it under the terms of the GNU General Public License as published by
-+ *   the Free Software Foundation; version 2 of the License
-+ *
-+ *   This program is distributed in the hope that it will be useful,
-+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ *   GNU General Public License for more details.
-+ *
-+ *   Copyright (C) 2018 John Crispin <john@phrozen.org>
-+ */
-+
-+#include <net/netfilter/nf_flow_table.h>
-+#include "mtk_eth_soc.h"
-+
-+static int
-+mtk_offload_prepare_v4(struct mtk_eth *eth, struct mtk_foe_entry *entry,
-+		       struct flow_offload_tuple *s_tuple,
-+		       struct flow_offload_tuple *d_tuple,
-+		       struct flow_offload_hw_path *src,
-+		       struct flow_offload_hw_path *dest)
-+{
-+	int dest_port = 1;
-+
-+	if (dest->dev == eth->netdev[1])
-+	    dest_port = 2;
-+
-+	mtk_foe_entry_prepare(entry, MTK_PPE_PKT_TYPE_IPV4_HNAPT, s_tuple->l4proto,
-+			      dest_port, dest->eth_src, dest->eth_dest);
-+	mtk_foe_entry_set_ipv4_tuple(entry, false,
-+				     s_tuple->src_v4.s_addr, s_tuple->src_port,
-+				     s_tuple->dst_v4.s_addr, s_tuple->dst_port);
-+	mtk_foe_entry_set_ipv4_tuple(entry, true,
-+				     d_tuple->dst_v4.s_addr, d_tuple->dst_port,
-+				     d_tuple->src_v4.s_addr, d_tuple->src_port);
-+
-+	if (dest->flags & FLOW_OFFLOAD_PATH_PPPOE)
-+		mtk_foe_entry_set_pppoe(entry, dest->pppoe_sid);
-+
-+	if (dest->flags & FLOW_OFFLOAD_PATH_VLAN)
-+		mtk_foe_entry_set_vlan(entry, dest->vlan_id);
-+
-+	if (dest->flags & FLOW_OFFLOAD_PATH_DSA)
-+		mtk_foe_entry_set_dsa(entry, dest->dsa_port);
-+
-+	return 0;
-+}
-+
-+int mtk_flow_offload_add(struct mtk_eth *eth,
-+			 enum flow_offload_type type,
-+			 struct flow_offload *flow,
-+			 struct flow_offload_hw_path *src,
-+			 struct flow_offload_hw_path *dest)
-+{
-+	struct flow_offload_tuple *otuple = &flow->tuplehash[FLOW_OFFLOAD_DIR_ORIGINAL].tuple;
-+	struct flow_offload_tuple *rtuple = &flow->tuplehash[FLOW_OFFLOAD_DIR_REPLY].tuple;
-+	struct mtk_foe_entry orig, reply;
-+	u32 ohash, rhash, timestamp;
-+
-+	if (otuple->l4proto != IPPROTO_TCP && otuple->l4proto != IPPROTO_UDP)
-+		return -EINVAL;
-+
-+	if (type == FLOW_OFFLOAD_DEL) {
-+		ohash = (unsigned long)flow->priv;
-+		rhash = ohash >> 16;
-+		ohash &= 0xffff;
-+		mtk_foe_entry_clear(&eth->ppe, ohash);
-+		mtk_foe_entry_clear(&eth->ppe, rhash);
-+		rcu_assign_pointer(eth->foe_flow_table[ohash], NULL);
-+		rcu_assign_pointer(eth->foe_flow_table[rhash], NULL);
-+		synchronize_rcu();
-+
-+		return 0;
-+	}
-+
-+	switch (otuple->l3proto) {
-+	case AF_INET:
-+		if (mtk_offload_prepare_v4(eth, &orig, otuple, rtuple, src, dest) ||
-+		    mtk_offload_prepare_v4(eth, &reply, rtuple, otuple, dest, src))
-+			return -EINVAL;
-+		break;
-+	default:
-+		return -EINVAL;
-+	}
-+
-+	timestamp = mtk_r32(eth, 0x0010);
-+
-+	ohash = mtk_foe_entry_commit(&eth->ppe, &orig, timestamp);
-+	if (ohash < 0)
-+		return -EINVAL;
-+
-+	rhash = mtk_foe_entry_commit(&eth->ppe, &reply, timestamp);
-+	if (rhash < 0) {
-+		mtk_foe_entry_clear(&eth->ppe, ohash);
-+		return -EINVAL;
-+	}
-+
-+	rcu_assign_pointer(eth->foe_flow_table[ohash], flow);
-+	rcu_assign_pointer(eth->foe_flow_table[rhash], flow);
-+
-+	ohash |= rhash << 16;
-+	flow->priv = (void *)(unsigned long)ohash;
-+
-+	return 0;
-+}
-+
-+static void mtk_offload_keepalive(struct mtk_eth *eth, unsigned int hash)
-+{
-+	struct flow_offload *flow;
-+
-+	rcu_read_lock();
-+	flow = rcu_dereference(eth->foe_flow_table[hash]);
-+	if (flow)
-+		flow->timeout = jiffies + 30 * HZ;
-+	rcu_read_unlock();
-+}
-+
-+int mtk_offload_check_rx(struct mtk_eth *eth, struct sk_buff *skb, u32 rxd4)
-+{
-+	unsigned int hash;
-+
-+	switch (FIELD_GET(MTK_RXD4_PPE_CPU_REASON, rxd4)) {
-+	case MTK_PPE_CPU_REASON_KEEPALIVE_UC_OLD_HDR:
-+	case MTK_PPE_CPU_REASON_KEEPALIVE_MC_NEW_HDR:
-+	case MTK_PPE_CPU_REASON_KEEPALIVE_DUP_OLD_HDR:
-+		hash = FIELD_GET(MTK_RXD4_FOE_ENTRY, rxd4);
-+		mtk_offload_keepalive(eth, hash);
-+		return -1;
-+	case MTK_PPE_CPU_REASON_PACKET_SAMPLING:
-+		return -1;
-+	default:
-+		return 0;
-+	}
-+}
-+
-+int mtk_flow_offload_init(struct mtk_eth *eth)
-+{
-+	eth->foe_flow_table = devm_kcalloc(eth->dev, MTK_PPE_ENTRIES,
-+					   sizeof(*eth->foe_flow_table),
-+					   GFP_KERNEL);
-+
-+	if (!eth->foe_flow_table)
-+		return -ENOMEM;
-+
-+	return 0;
-+}
---- a/drivers/net/ethernet/mediatek/mtk_ppe.c
-+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
-@@ -375,6 +375,8 @@ int mtk_ppe_init(struct mtk_ppe *ppe, st
- 
- 	ppe->foe_table = foe;
- 
-+	mtk_ppe_debugfs_init(ppe);
-+
- 	return 0;
- }
- 
---- a/drivers/net/ethernet/mediatek/mtk_ppe.h
-+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
-@@ -271,4 +271,7 @@ int mtk_foe_entry_set_pppoe(struct mtk_f
- int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry,
- 			 u16 timestamp);
- 
-+/* internal */
-+int mtk_ppe_debugfs_init(struct mtk_ppe *ppe);
-+
- #endif
---- /dev/null
-+++ b/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c
-@@ -0,0 +1,114 @@
-+/*   This program is free software; you can redistribute it and/or modify
-+ *   it under the terms of the GNU General Public License as published by
-+ *   the Free Software Foundation; version 2 of the License
-+ *
-+ *   This program is distributed in the hope that it will be useful,
-+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ *   GNU General Public License for more details.
-+ *
-+ *   Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
-+ *   Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
-+ *   Copyright (C) 2020 Felix Fietkau <nbd@nbd.name>
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/debugfs.h>
-+#include "mtk_eth_soc.h"
-+
-+static const char *mtk_foe_entry_state_str[] = {
-+	"INVALID",
-+	"UNBIND",
-+	"BIND",
-+	"FIN"
-+};
-+
-+static const char *mtk_foe_packet_type_str[] = {
-+	"IPV4_HNAPT",
-+	"IPV4_HNAT",
-+	"IPV6_1T_ROUTE",
-+	"IPV4_DSLITE",
-+	"IPV6_3T_ROUTE",
-+	"IPV6_5T_ROUTE",
-+	"IPV6_6RD",
-+};
-+
-+#define es(entry)		(mtk_foe_entry_state_str[FIELD_GET(MTK_FOE_IB1_STATE, entry->ib1)])
-+//#define ei(entry, end)		(MTK_PPE_TBL_SZ - (int)(end - entry))
-+#define pt(entry)		(mtk_foe_packet_type_str[FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1)])
-+
-+static int mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private)
-+{
-+	struct mtk_ppe *ppe = m->private;
-+	int i, count;
-+
-+	for (i = 0, count = 0; i < MTK_PPE_ENTRIES; i++) {
-+		struct mtk_foe_entry *entry = &ppe->foe_table[i];
-+
-+		if (!FIELD_GET(MTK_FOE_IB1_STATE, entry->ib1))
-+			continue;
-+
-+		if (FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1) ==
-+		    MTK_PPE_PKT_TYPE_IPV4_HNAPT) {
-+			struct mtk_foe_ipv4 *ip4 = &entry->ipv4;
-+			struct mtk_foe_mac_info *l2 = &ip4->l2;
-+
-+			__be32 saddr = htonl(ip4->orig.src_ip);
-+			__be32 daddr = htonl(ip4->orig.dest_ip);
-+			__be32 nsaddr = htonl(ip4->new.src_ip);
-+			__be32 ndaddr = htonl(ip4->new.dest_ip);
-+			unsigned char h_dest[ETH_ALEN];
-+			unsigned char h_source[ETH_ALEN];
-+
-+			*((__be32 *) h_source) = htonl(l2->src_mac_hi);
-+			*((__be16*) &h_source[4]) = htons(l2->src_mac_lo);
-+			*((__be32*) h_dest) = htonl(l2->dest_mac_hi);
-+			*((__be16*) &h_dest[4]) = htons(l2->dest_mac_lo);
-+			seq_printf(m,
-+				   "(%x)0x%05x|state=%s|type=%s|"
-+				   "%pI4:%d->%pI4:%d=>%pI4:%d->%pI4:%d|%pM=>%pM|"
-+				   "etype=0x%04x|info1=0x%x|info2=0x%x|"
-+				   "vlan1=%d|vlan2=%d\n",
-+				   count, i, es(entry), pt(entry),
-+				   &saddr, ip4->orig.src_port,
-+				   &daddr, ip4->orig.dest_port,
-+				   &nsaddr, ip4->new.src_port,
-+				   &ndaddr, ip4->new.dest_port,
-+				   h_source, h_dest,
-+				   ntohs(l2->etype),
-+				   entry->ib1,
-+				   ip4->ib2,
-+				   l2->vlan1,
-+				   l2->vlan2);
-+			count++;
-+		} else
-+			seq_printf(m, "0x%05x state=%s\n", count, es(entry));
-+	}
-+
-+	return 0;
-+}
-+
-+static int mtk_ppe_debugfs_foe_open(struct inode *inode, struct file *file)
-+{
-+	return single_open(file, mtk_ppe_debugfs_foe_show, inode->i_private);
-+}
-+
-+static const struct file_operations mtk_ppe_debugfs_foe_fops = {
-+	.open = mtk_ppe_debugfs_foe_open,
-+	.read = seq_read,
-+	.llseek = seq_lseek,
-+	.release = single_release,
-+};
-+
-+int mtk_ppe_debugfs_init(struct mtk_ppe *ppe)
-+{
-+	struct dentry *root;
-+
-+	root = debugfs_create_dir("mtk_ppe", NULL);
-+	if (!root)
-+		return -ENOMEM;
-+
-+	debugfs_create_file("entries", S_IRUGO, root, ppe, &mtk_ppe_debugfs_foe_fops);
-+
-+	return 0;
-+}