80 lines
2.2 KiB
Diff
80 lines
2.2 KiB
Diff
From: David Bentham <db260179@gmail.com>
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Date: Mon, 21 Feb 2022 15:36:16 +0100
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Subject: [PATCH] net: ethernet: mtk_eth_soc: add ipv6 flow offload
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support
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Add the missing IPv6 flow offloading support for routing only.
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Hardware flow offloading is done by the packet processing engine (PPE)
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of the Ethernet MAC and as it doesn't support mangling of IPv6 packets,
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IPv6 NAT cannot be supported.
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Signed-off-by: David Bentham <db260179@gmail.com>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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@@ -6,6 +6,7 @@
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#include <linux/if_ether.h>
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#include <linux/rhashtable.h>
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#include <linux/ip.h>
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+#include <linux/ipv6.h>
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#include <net/flow_offload.h>
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#include <net/pkt_cls.h>
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#include <net/dsa.h>
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@@ -20,6 +21,11 @@ struct mtk_flow_data {
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__be32 src_addr;
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__be32 dst_addr;
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} v4;
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+
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+ struct {
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+ struct in6_addr src_addr;
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+ struct in6_addr dst_addr;
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+ } v6;
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};
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__be16 src_port;
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@@ -65,6 +71,14 @@ mtk_flow_set_ipv4_addr(struct mtk_foe_en
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data->v4.dst_addr, data->dst_port);
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}
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+static int
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+mtk_flow_set_ipv6_addr(struct mtk_foe_entry *foe, struct mtk_flow_data *data)
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+{
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+ return mtk_foe_entry_set_ipv6_tuple(foe,
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+ data->v6.src_addr.s6_addr32, data->src_port,
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+ data->v6.dst_addr.s6_addr32, data->dst_port);
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+}
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+
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static void
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mtk_flow_offload_mangle_eth(const struct flow_action_entry *act, void *eth)
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{
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@@ -296,6 +310,9 @@ mtk_flow_offload_replace(struct mtk_eth
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case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
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offload_type = MTK_PPE_PKT_TYPE_IPV4_HNAPT;
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break;
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+ case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
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+ offload_type = MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T;
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+ break;
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default:
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return -EOPNOTSUPP;
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}
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@@ -331,6 +348,17 @@ mtk_flow_offload_replace(struct mtk_eth
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mtk_flow_set_ipv4_addr(&foe, &data, false);
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}
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+ if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
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+ struct flow_match_ipv6_addrs addrs;
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+
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+ flow_rule_match_ipv6_addrs(rule, &addrs);
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+
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+ data.v6.src_addr = addrs.key->src;
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+ data.v6.dst_addr = addrs.key->dst;
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+
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+ mtk_flow_set_ipv6_addr(&foe, &data);
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+ }
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+
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flow_action_for_each(i, act, &rule->action) {
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if (act->id != FLOW_ACTION_MANGLE)
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continue;
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