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authorFelix Fietkau <nbd@nbd.name>2018-03-23 12:53:44 +0100
committerFelix Fietkau <nbd@nbd.name>2018-04-05 18:12:30 +0200
commitd073f650cdef24dce957099e55b660124fe2e0a4 (patch)
tree53772d88d45ec77dc490bcf25d915e5338291d11 /target
parent11a3d270436137fa485257eab8153ce5d307cfa7 (diff)
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kernel: add support for enabling hardware flow offload via iptables
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target')
-rw-r--r--target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch35
1 files changed, 34 insertions, 1 deletions
diff --git a/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch b/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
index 7296cfa6c4..a322e605a2 100644
--- a/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
+++ b/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
@@ -98,7 +98,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
obj-$(CONFIG_NETFILTER_XT_TARGET_LED) += xt_LED.o
--- /dev/null
+++ b/net/netfilter/xt_FLOWOFFLOAD.c
-@@ -0,0 +1,351 @@
+@@ -0,0 +1,364 @@
+/*
+ * Copyright (C) 2018 Felix Fietkau <nbd@nbd.name>
+ *
@@ -109,6 +109,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netfilter.h>
++#include <linux/netfilter/xt_FLOWOFFLOAD.h>
+#include <net/ip.h>
+#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_flow_table.h>
@@ -335,6 +336,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+static unsigned int
+flowoffload_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
++ const struct xt_flowoffload_target_info *info = par->targinfo;
+ enum ip_conntrack_info ctinfo;
+ enum ip_conntrack_dir dir;
+ struct nf_flow_route route;
@@ -387,6 +389,9 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+ xt_flowoffload_check_device(xt_in(par));
+ xt_flowoffload_check_device(xt_out(par));
+
++ if (info->flags & XT_FLOWOFFLOAD_HW)
++ nf_flow_offload_hw_add(xt_net(par), flow, ct);
++
+ return XT_CONTINUE;
+
+err_flow_add:
@@ -401,6 +406,11 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+static int flowoffload_chk(const struct xt_tgchk_param *par)
+{
++ struct xt_flowoffload_target_info *info = par->targinfo;
++
++ if (info->flags & ~XT_FLOWOFFLOAD_MASK)
++ return -EINVAL;
++
+ return 0;
+}
+
@@ -408,6 +418,8 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+ .family = NFPROTO_UNSPEC,
+ .name = "FLOWOFFLOAD",
+ .revision = 0,
++ .targetsize = sizeof(struct xt_flowoffload_target_info),
++ .usersize = sizeof(struct xt_flowoffload_target_info),
+ .checkentry = flowoffload_chk,
+ .target = flowoffload_tg,
+ .me = THIS_MODULE,
@@ -415,6 +427,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+static int xt_flowoffload_table_init(struct nf_flowtable *table)
+{
++ table->flags = NF_FLOWTABLE_F_HW;
+ nf_flow_table_init(table);
+ return 0;
+}
@@ -460,3 +473,23 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#include <net/netfilter/nf_flow_table.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
+--- /dev/null
++++ b/include/uapi/linux/netfilter/xt_FLOWOFFLOAD.h
+@@ -0,0 +1,17 @@
++/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
++#ifndef _XT_FLOWOFFLOAD_H
++#define _XT_FLOWOFFLOAD_H
++
++#include <linux/types.h>
++
++enum {
++ XT_FLOWOFFLOAD_HW = 1 << 0,
++
++ XT_FLOWOFFLOAD_MASK = XT_FLOWOFFLOAD_HW
++};
++
++struct xt_flowoffload_target_info {
++ __u32 flags;
++};
++
++#endif /* _XT_FLOWOFFLOAD_H */