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authorAlexander Aring <alex.aring@gmail.com>2013-10-30 09:18:22 +0100
committerDavid S. Miller <davem@davemloft.net>2013-10-30 17:18:46 -0400
commit3e69162ea4a9e927cb3619b96c86aae4ded60112 (patch)
treec04fe5483df3b23beec9a21a285606f5e34768f1
parent3961532fd41f13e6d6958c44c0ccc567da144a79 (diff)
downloadop-kernel-dev-3e69162ea4a9e927cb3619b96c86aae4ded60112.zip
op-kernel-dev-3e69162ea4a9e927cb3619b96c86aae4ded60112.tar.gz
6lowpan: set and use mac_len for mac header length
Set the mac header length while creating the 802.15.4 mac header. Drop the function for recalculate mac header length in upper layers which was static and works for intra pan communication only. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Werner Almesberger <werner@almesberger.net> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ieee802154/6lowpan.c13
-rw-r--r--net/mac802154/wpan.c2
2 files changed, 3 insertions, 12 deletions
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 6d67784..e6db1f5 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1100,17 +1100,6 @@ static int lowpan_set_address(struct net_device *dev, void *p)
return 0;
}
-static int lowpan_get_mac_header_length(struct sk_buff *skb)
-{
- /*
- * Currently long addressing mode is supported only, so the overall
- * header size is 21:
- * FC SeqNum DPAN DA SA Sec
- * 2 + 1 + 2 + 8 + 8 + 0 = 21
- */
- return 21;
-}
-
static int
lowpan_fragment_xmit(struct sk_buff *skb, u8 *head,
int mlen, int plen, int offset, int type)
@@ -1150,7 +1139,7 @@ lowpan_skb_fragmentation(struct sk_buff *skb, struct net_device *dev)
int err, header_length, payload_length, tag, offset = 0;
u8 head[5];
- header_length = lowpan_get_mac_header_length(skb);
+ header_length = skb->mac_len;
payload_length = skb->len - header_length;
tag = lowpan_dev_info(dev)->fragment_tag++;
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index 2ca2f4d..e24bcf9 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -208,6 +208,8 @@ static int mac802154_header_create(struct sk_buff *skb,
head[1] = fc >> 8;
memcpy(skb_push(skb, pos), head, pos);
+ skb_reset_mac_header(skb);
+ skb->mac_len = pos;
return pos;
}
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