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6lowpan: introduce LOWPAN_IPHC_MAX_HC_BUF_LEN

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This patch introduces the LOWPAN_IPHC_MAX_HC_BUF_LEN define which
represent the worst-case supported IPHC buffer length. It's used to
allocate the stack buffer space for creating the IPHC header.

Signed-off-by: Alexander Aring <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Alexander Aring 2015-10-13 13:42:56 +02:00 • committed by Marcel Holtmann
commit bf513fd6fc
2 changed files with 9 additions and 1 deletions
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net/6lowpan/iphc.c
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@ -429,7 +429,7 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev,
{
u8 tmp, iphc0, iphc1, *hc_ptr;
struct ipv6hdr *hdr;
u8 head[100] = {};
u8 head[LOWPAN_IPHC_MAX_HC_BUF_LEN] = {};
int ret, addr_type;
if (type != ETH_P_IPV6)