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Commit d23b8ad8 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

tc: add BPF based action 



This action provides a possibility to exec custom BPF code.

Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 02dba438

include/net/tc_act/tc_bpf.h

0 → 100644
+25 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>

 *

 * 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; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef __NET_TC_BPF_H

#define __NET_TC_BPF_H



#include <linux/filter.h>

#include <net/act_api.h>



struct tcf_bpf {

	struct tcf_common	common;

	struct bpf_prog		*filter;

	struct sock_filter	*bpf_ops;

	u16			bpf_num_ops;

};

#define to_bpf(a) \

	container_of(a->priv, struct tcf_bpf, common)



#endif /* __NET_TC_BPF_H */

include/uapi/linux/tc_act/Kbuild

+1 −0
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@@ -8,3 +8,4 @@ header-y += tc_nat.h 
header-y += tc_pedit.h

header-y += tc_skbedit.h

header-y += tc_vlan.h

header-y += tc_bpf.h

include/uapi/linux/tc_act/tc_bpf.h

0 → 100644
+31 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>

 *

 * 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; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef __LINUX_TC_BPF_H

#define __LINUX_TC_BPF_H



#include <linux/pkt_cls.h>



#define TCA_ACT_BPF 13



struct tc_act_bpf {

	tc_gen;

};



enum {

	TCA_ACT_BPF_UNSPEC,

	TCA_ACT_BPF_TM,

	TCA_ACT_BPF_PARMS,

	TCA_ACT_BPF_OPS_LEN,

	TCA_ACT_BPF_OPS,

	__TCA_ACT_BPF_MAX,

};

#define TCA_ACT_BPF_MAX (__TCA_ACT_BPF_MAX - 1)



#endif

net/sched/Kconfig

+12 −0
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@@ -698,6 +698,18 @@ config NET_ACT_VLAN 
	  To compile this code as a module, choose M here: the

	  module will be called act_vlan.



config NET_ACT_BPF

        tristate "BPF based action"

        depends on NET_CLS_ACT

        ---help---

	  Say Y here to execute BPF code on packets. The BPF code will decide

	  if the packet should be dropped or not.



	  If unsure, say N.



	  To compile this code as a module, choose M here: the

	  module will be called act_bpf.



config NET_CLS_IND

	bool "Incoming device classification"

	depends on NET_CLS_U32 || NET_CLS_FW

net/sched/Makefile

+1 −0
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@@ -17,6 +17,7 @@ obj-$(CONFIG_NET_ACT_SIMP) += act_simple.o 
obj-$(CONFIG_NET_ACT_SKBEDIT)	+= act_skbedit.o

obj-$(CONFIG_NET_ACT_CSUM)	+= act_csum.o

obj-$(CONFIG_NET_ACT_VLAN)	+= act_vlan.o

obj-$(CONFIG_NET_ACT_BPF)	+= act_bpf.o

obj-$(CONFIG_NET_SCH_FIFO)	+= sch_fifo.o

obj-$(CONFIG_NET_SCH_CBQ)	+= sch_cbq.o

obj-$(CONFIG_NET_SCH_HTB)	+= sch_htb.o