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authorAlexander Aring <alex.aring@gmail.com>2013-02-05 14:23:43 +0400
committerDavid S. Miller <davem@davemloft.net>2013-02-07 00:56:17 +0400
commitfc4e98dbbaa30ca2180df0b2b0d0608045ed3f19 (patch)
treeb8a555d561dfae5ac96cae94c4a8d9f19f7a75d6 /net/ieee802154
parenta07fdceccf9d9f1b87f781e9a87662182e590d70 (diff)
downloadlinux-fc4e98dbbaa30ca2180df0b2b0d0608045ed3f19.tar.xz
6lowpan: use stack buffer instead of heap
head buffer is only temporary available in lowpan_header_create. So it's not necessary to put it on the heap. Also fixed a comment codestyle issue. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/6lowpan.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index f62c3b963f95..43b95ca61114 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -377,17 +377,14 @@ static int lowpan_header_create(struct sk_buff *skb,
struct ipv6hdr *hdr;
const u8 *saddr = _saddr;
const u8 *daddr = _daddr;
- u8 *head;
+ u8 head[100];
struct ieee802154_addr sa, da;
+ /* TODO:
+ * if this package isn't ipv6 one, where should it be routed?
+ */
if (type != ETH_P_IPV6)
return 0;
- /* TODO:
- * if this package isn't ipv6 one, where should it be routed?
- */
- head = kzalloc(100, GFP_KERNEL);
- if (head == NULL)
- return -ENOMEM;
hdr = ipv6_hdr(skb);
hc06_ptr = head + 2;
@@ -561,8 +558,6 @@ static int lowpan_header_create(struct sk_buff *skb,
skb_pull(skb, sizeof(struct ipv6hdr));
memcpy(skb_push(skb, hc06_ptr - head), head, hc06_ptr - head);
- kfree(head);
-
lowpan_raw_dump_table(__func__, "raw skb data dump", skb->data,
skb->len);