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net: nbuf: Add helper function to copy buf user_data

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The function copies the net_buf user data (struct net_nbuf).

Change-Id: I2ea42823d58aea77ea7b710f6ce5fd5d1e3641b4
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2017-02-17 14:44:55 +02:00
parent 4bcc2a47d0
commit eb35c8dcae
1 changed files with 8 additions and 0 deletions
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8
include/net/nbuf.h
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@ -298,6 +298,14 @@ static inline void net_nbuf_ll_swap(struct net_buf *buf)
net_nbuf_ll_dst(buf)->addr = addr;
}
static inline void net_nbuf_copy_user_data(struct net_buf *new,
struct net_buf *orig)
{
memcpy((struct net_nbuf *)net_buf_user_data(new),
(struct net_nbuf *)net_buf_user_data(orig),
sizeof(struct net_nbuf));
}
#define NET_IPV6_BUF(buf) ((struct net_ipv6_hdr *)net_nbuf_ip_data(buf))
#define NET_IPV4_BUF(buf) ((struct net_ipv4_hdr *)net_nbuf_ip_data(buf))
#define NET_ICMP_BUF(buf) ((struct net_icmp_hdr *)net_nbuf_icmp_data(buf))