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net: add doc for in4_pton() 

It is not easy to use in4_pton() correctly without reading
its definition, so add some doc for it.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amerigo Wang 2012-10-11 21:06:17 +00:00 committed by David S. Miller
parent 28194fcdc1
commit 93ac0ef016
1 changed files with 12 additions and 0 deletions
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12
net/core/utils.c
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@ -107,6 +107,18 @@ static inline int xdigit2bin(char c, int delim)
return IN6PTON_UNKNOWN;
}
/**
* in4_pton - convert an IPv4 address from literal to binary representation
* @src: the start of the IPv4 address string
* @srclen: the length of the string, -1 means strlen(src)
* @dst: the binary (u8[4] array) representation of the IPv4 address
* @delim: the delimiter of the IPv4 address in @src, -1 means no delimiter
* @end: A pointer to the end of the parsed string will be placed here
*
* Return one on success, return zero when any error occurs
* and @end will point to the end of the parsed string.
*
*/
int in4_pton(const char *src, int srclen,
u8 *dst,
int delim, const char **end)