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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: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-09-02 14:21:27 +02:00 committed by Marcel Holtmann
parent faf7d36e5e
commit ad663600e1
1 changed files with 90 additions and 0 deletions
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90
net/ieee802154/6lowpan/rx.c
View File

@ -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);