diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch')
| -rw-r--r-- | target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch | 401 |
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(ð->ppe, ohash); -+ mtk_foe_entry_clear(ð->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(ð->ppe, &orig, timestamp); -+ if (ohash < 0) -+ return -EINVAL; -+ -+ rhash = mtk_foe_entry_commit(ð->ppe, &reply, timestamp); -+ if (rhash < 0) { -+ mtk_foe_entry_clear(ð->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; -+} |