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authorAlexander Aring <alex.aring@gmail.com>2015-10-13 13:42:58 +0200
committerMarcel Holtmann <marcel@holtmann.org>2015-10-21 00:49:24 +0200
commit8911d7748ca360ef96cb207cc5165eb9c08669e5 (patch)
treeed912fd4c9021f1f937eece443d0be1173b9c5c1 /net/ieee802154/6lowpan
parenta6f773891a836abfa16fcbb8af14c29c3e109336 (diff)
downloadlinux-8911d7748ca360ef96cb207cc5165eb9c08669e5.tar.bz2
6lowpan: cleanup lowpan_header_decompress
This patch changes the lowpan_header_decompress function by removing inklayer related information from parameters. This is currently for supporting short and extended address for iphc handling in 802154. We don't support short address handling anyway right now, but there exists already code for handling short addresses in lowpan_header_decompress. The address parameters are also changed to a void pointer, so 6LoWPAN linklayer specific code can put complex structures as these parameters and cast it again inside the generic code by evaluating linklayer type before. The order is also changed by destination address at first and then source address, which is the same like all others functions where destination is always the first, memcpy, dev_hard_header, lowpan_header_compress, etc. This patch also moves the fetching of iphc values from 6LoWPAN linklayer specific code into the generic branch. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154/6lowpan')
-rw-r--r--net/ieee802154/6lowpan/rx.c26
1 files changed, 1 insertions, 25 deletions
diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index 65d55e05516c..403f17126433 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -90,36 +90,12 @@ static lowpan_rx_result lowpan_rx_h_frag(struct sk_buff *skb)
int lowpan_iphc_decompress(struct sk_buff *skb)
{
- struct ieee802154_addr_sa sa, da;
struct ieee802154_hdr hdr;
- u8 iphc0, iphc1;
- void *sap, *dap;
if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
return -EINVAL;
- raw_dump_table(__func__, "raw skb data dump", skb->data, skb->len);
-
- if (lowpan_fetch_skb_u8(skb, &iphc0) ||
- lowpan_fetch_skb_u8(skb, &iphc1))
- return -EINVAL;
-
- ieee802154_addr_to_sa(&sa, &hdr.source);
- ieee802154_addr_to_sa(&da, &hdr.dest);
-
- if (sa.addr_type == IEEE802154_ADDR_SHORT)
- sap = &sa.short_addr;
- else
- sap = &sa.hwaddr;
-
- if (da.addr_type == IEEE802154_ADDR_SHORT)
- dap = &da.short_addr;
- else
- dap = &da.hwaddr;
-
- return lowpan_header_decompress(skb, skb->dev, sap, sa.addr_type,
- IEEE802154_ADDR_LEN, dap, da.addr_type,
- IEEE802154_ADDR_LEN, iphc0, iphc1);
+ return lowpan_header_decompress(skb, skb->dev, &hdr.dest, &hdr.source);
}
static lowpan_rx_result lowpan_rx_h_iphc(struct sk_buff *skb)