diff mbox series

[06/11] net: ethernet: mtk_eth_soc: add ipv6 flow offload support

Message ID 20220225101811.72103-7-nbd@nbd.name (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series MediaTek SoC flow offload improvements + wireless support | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 2 this patch: 2
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 2 this patch: 2
netdev/checkpatch warning WARNING: line length of 88 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply, async

Commit Message

Felix Fietkau Feb. 25, 2022, 10:18 a.m. UTC
From: David Bentham <db260179@gmail.com>

Add the missing IPv6 flow offloading support for routing only.
Hardware flow offloading is done by the packet processing engine (PPE)
of the Ethernet MAC and as it doesn't support mangling of IPv6 packets,
IPv6 NAT cannot be supported.

Signed-off-by: David Bentham <db260179@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 .../net/ethernet/mediatek/mtk_ppe_offload.c   | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
index bcf342bb9051..0113cddcebf4 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
@@ -6,6 +6,7 @@ 
 #include <linux/if_ether.h>
 #include <linux/rhashtable.h>
 #include <linux/ip.h>
+#include <linux/ipv6.h>
 #include <net/flow_offload.h>
 #include <net/pkt_cls.h>
 #include <net/dsa.h>
@@ -20,6 +21,11 @@  struct mtk_flow_data {
 			__be32 src_addr;
 			__be32 dst_addr;
 		} v4;
+
+		struct {
+			struct in6_addr src_addr;
+			struct in6_addr dst_addr;
+		} v6;
 	};
 
 	__be16 src_port;
@@ -65,6 +71,14 @@  mtk_flow_set_ipv4_addr(struct mtk_foe_entry *foe, struct mtk_flow_data *data,
 					    data->v4.dst_addr, data->dst_port);
 }
 
+static int
+mtk_flow_set_ipv6_addr(struct mtk_foe_entry *foe, struct mtk_flow_data *data)
+{
+	return mtk_foe_entry_set_ipv6_tuple(foe,
+					    data->v6.src_addr.s6_addr32, data->src_port,
+					    data->v6.dst_addr.s6_addr32, data->dst_port);
+}
+
 static void
 mtk_flow_offload_mangle_eth(const struct flow_action_entry *act, void *eth)
 {
@@ -296,6 +310,9 @@  mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 	case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
 		offload_type = MTK_PPE_PKT_TYPE_IPV4_HNAPT;
 		break;
+	case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
+		offload_type = MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T;
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -331,6 +348,17 @@  mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 		mtk_flow_set_ipv4_addr(&foe, &data, false);
 	}
 
+	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
+		struct flow_match_ipv6_addrs addrs;
+
+		flow_rule_match_ipv6_addrs(rule, &addrs);
+
+		data.v6.src_addr = addrs.key->src;
+		data.v6.dst_addr = addrs.key->dst;
+
+		mtk_flow_set_ipv6_addr(&foe, &data);
+	}
+
 	flow_action_for_each(i, act, &rule->action) {
 		if (act->id != FLOW_ACTION_MANGLE)
 			continue;