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Commit 1ce84604 authored by Yotam Gigi's avatar Yotam Gigi Committed by David S. Miller
Browse files

net: Introduce ife encapsulation module 



This module is responsible for the ife encapsulation protocol
encode/decode logics. That module can:
 - ife_encode: encode skb and reserve space for the ife meta header
 - ife_decode: decode skb and extract the meta header size
 - ife_tlv_meta_encode - encodes one tlv entry into the reserved ife
   header space.
 - ife_tlv_meta_decode - decodes one tlv entry from the packet
 - ife_tlv_meta_next - advance to the next tlv

Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarYotam Gigi <yotamg@mellanox.com>
Signed-off-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: default avatarRoman Mashak <mrv@mojatatu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1d5e7c85

MAINTAINERS

+7 −0
Original line number Diff line number Diff line
@@ -6250,6 +6250,13 @@ F: include/net/cfg802154.h 
F:	include/net/ieee802154_netdev.h

F:	Documentation/networking/ieee802154.txt



IFE PROTOCOL

M:	Yotam Gigi <yotamg@mellanox.com>

M:	Jamal Hadi Salim <jhs@mojatatu.com>

F:	net/ife

F:	include/net/ife.h

F:	include/uapi/linux/ife.h



IGORPLUG-USB IR RECEIVER

M:	Sean Young <sean@mess.org>

L:	linux-media@vger.kernel.org

include/net/ife.h

0 → 100644
+51 −0
Original line number Diff line number Diff line 
#ifndef __NET_IFE_H

#define __NET_IFE_H



#include <linux/etherdevice.h>

#include <linux/rtnetlink.h>

#include <linux/module.h>

#include <uapi/linux/ife.h>



#if IS_ENABLED(CONFIG_NET_IFE)



void *ife_encode(struct sk_buff *skb, u16 metalen);

void *ife_decode(struct sk_buff *skb, u16 *metalen);



void *ife_tlv_meta_decode(void *skbdata, u16 *attrtype, u16 *dlen, u16 *totlen);

int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,

			const void *dval);



void *ife_tlv_meta_next(void *skbdata);



#else



static inline void *ife_encode(struct sk_buff *skb, u16 metalen)

{

	return NULL;

}



static inline void *ife_decode(struct sk_buff *skb, u16 *metalen)

{

	return NULL;

}



static inline void *ife_tlv_meta_decode(void *skbdata, u16 *attrtype, u16 *dlen,

					u16 *totlen)

{

	return NULL;

}



static inline int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,

			const void *dval)

{

	return 0;

}



static inline void *ife_tlv_meta_next(void *skbdata)

{

	return NULL;

}



#endif



#endif /* __NET_IFE_H */

include/uapi/linux/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -195,6 +195,7 @@ header-y += if_tun.h 
header-y += if_tunnel.h

header-y += if_vlan.h

header-y += if_x25.h

header-y += ife.h

header-y += igmp.h

header-y += ila.h

header-y += in6.h

include/uapi/linux/ife.h

0 → 100644
+18 −0
Original line number Diff line number Diff line 
#ifndef __UAPI_IFE_H

#define __UAPI_IFE_H



#define IFE_METAHDRLEN 2



enum {

	IFE_META_SKBMARK = 1,

	IFE_META_HASHID,

	IFE_META_PRIO,

	IFE_META_QMAP,

	IFE_META_TCINDEX,

	__IFE_META_MAX

};



/*Can be overridden at runtime by module option*/

#define IFE_META_MAX (__IFE_META_MAX - 1)



#endif

net/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -391,6 +391,7 @@ source "net/caif/Kconfig" 
source "net/ceph/Kconfig"

source "net/nfc/Kconfig"

source "net/psample/Kconfig"

source "net/ife/Kconfig"



config LWTUNNEL

	bool "Network light weight tunnels"