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Commit ad663600 authored by Alexander Aring's avatar Alexander Aring Committed by Marcel Holtmann
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ieee802154: 6lowpan: add handler for all dispatch values 



This patch adds dummy handlers for all known IEEE 802.15.4 dispatch
values which prints a warning that we don't support these dispatches
right now. Also we add a warning to the RX_CONTINUE case inside of
lowpan_rx_handlers_result which should now never happend.

Reviewed-by: default avatarStefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent faf7d36e

net/ieee802154/6lowpan/rx.c

+90 −0
Original line number Diff line number Diff line
@@ -19,6 +19,11 @@ 
#define LOWPAN_DISPATCH_FRAG_MASK	0xf8



#define LOWPAN_DISPATCH_NALP		0x00

#define LOWPAN_DISPATCH_ESC		0x7f

#define LOWPAN_DISPATCH_HC1		0x42

#define LOWPAN_DISPATCH_DFF		0x43

#define LOWPAN_DISPATCH_BC0		0x50

#define LOWPAN_DISPATCH_MESH		0x80



static int lowpan_give_skb_to_device(struct sk_buff *skb)

{
@@ -144,6 +149,86 @@ lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb) 
	return RX_QUEUED;

}



static inline bool lowpan_is_esc(u8 dispatch)

{

	return dispatch == LOWPAN_DISPATCH_ESC;

}



static lowpan_rx_result lowpan_rx_h_esc(struct sk_buff *skb)

{

	if (!lowpan_is_esc(*skb_network_header(skb)))

		return RX_CONTINUE;



	net_warn_ratelimited("%s: %s\n", skb->dev->name,

			     "6LoWPAN ESC not supported\n");



	return RX_DROP_UNUSABLE;

}



static inline bool lowpan_is_hc1(u8 dispatch)

{

	return dispatch == LOWPAN_DISPATCH_HC1;

}



static lowpan_rx_result lowpan_rx_h_hc1(struct sk_buff *skb)

{

	if (!lowpan_is_hc1(*skb_network_header(skb)))

		return RX_CONTINUE;



	net_warn_ratelimited("%s: %s\n", skb->dev->name,

			     "6LoWPAN HC1 not supported\n");



	return RX_DROP_UNUSABLE;

}



static inline bool lowpan_is_dff(u8 dispatch)

{

	return dispatch == LOWPAN_DISPATCH_DFF;

}



static lowpan_rx_result lowpan_rx_h_dff(struct sk_buff *skb)

{

	if (!lowpan_is_dff(*skb_network_header(skb)))

		return RX_CONTINUE;



	net_warn_ratelimited("%s: %s\n", skb->dev->name,

			     "6LoWPAN DFF not supported\n");



	return RX_DROP_UNUSABLE;

}



static inline bool lowpan_is_bc0(u8 dispatch)

{

	return dispatch == LOWPAN_DISPATCH_BC0;

}



static lowpan_rx_result lowpan_rx_h_bc0(struct sk_buff *skb)

{

	if (!lowpan_is_bc0(*skb_network_header(skb)))

		return RX_CONTINUE;



	net_warn_ratelimited("%s: %s\n", skb->dev->name,

			     "6LoWPAN BC0 not supported\n");



	return RX_DROP_UNUSABLE;

}



static inline bool lowpan_is_mesh(u8 dispatch)

{

	return (dispatch & LOWPAN_DISPATCH_FIRST) == LOWPAN_DISPATCH_MESH;

}



static lowpan_rx_result lowpan_rx_h_mesh(struct sk_buff *skb)

{

	if (!lowpan_is_mesh(*skb_network_header(skb)))

		return RX_CONTINUE;



	net_warn_ratelimited("%s: %s\n", skb->dev->name,

			     "6LoWPAN MESH not supported\n");



	return RX_DROP_UNUSABLE;

}



static int lowpan_invoke_rx_handlers(struct sk_buff *skb)

{

	lowpan_rx_result res;
@@ -159,6 +244,11 @@ static int lowpan_invoke_rx_handlers(struct sk_buff *skb) 
	CALL_RXH(lowpan_rx_h_iphc);

	CALL_RXH(lowpan_rx_h_frag);

	CALL_RXH(lowpan_rx_h_ipv6);

	CALL_RXH(lowpan_rx_h_esc);

	CALL_RXH(lowpan_rx_h_hc1);

	CALL_RXH(lowpan_rx_h_dff);

	CALL_RXH(lowpan_rx_h_bc0);

	CALL_RXH(lowpan_rx_h_mesh);



rxh_next:

	return lowpan_rx_handlers_result(skb, res);