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Date:   Sat, 14 Jan 2017 17:09:58 -0500
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     stephen@...workplumber.org
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 1/1] utils: make hex2mem available to all users

Sorry, messed up Stephen's address. Resending..

cheers,
jamal

On 17-01-14 05:04 PM, Jamal Hadi Salim wrote:
> From: Jamal Hadi Salim <jhs@...atatu.com>
>
> hex2mem() api is useful for parsing hexstrings which are then packed in
> a stream of chars.
>
> Signed-off-by: Jamal Hadi Salim <jhs@...atatu.com>
> ---
>  include/utils.h |  1 +
>  ip/ipl2tp.c     | 25 -------------------------
>  lib/utils.c     | 25 +++++++++++++++++++++++++
>  3 files changed, 26 insertions(+), 25 deletions(-)
>
> diff --git a/include/utils.h b/include/utils.h
> index dc1d6b9..22369e0 100644
> --- a/include/utils.h
> +++ b/include/utils.h
> @@ -118,6 +118,7 @@ int get_be32(__be32 *val, const char *arg, int base);
>  int get_be16(__be16 *val, const char *arg, int base);
>  int get_addr64(__u64 *ap, const char *cp);
>
> +int hex2mem(const char *buf, uint8_t *mem, int count);
>  char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
>  __u8 *hexstring_a2n(const char *str, __u8 *buf, int blen, unsigned int *len);
>  #define ADDR64_BUF_SIZE sizeof("xxxx:xxxx:xxxx:xxxx")
> diff --git a/ip/ipl2tp.c b/ip/ipl2tp.c
> index 0f91aeb..88664c9 100644
> --- a/ip/ipl2tp.c
> +++ b/ip/ipl2tp.c
> @@ -485,31 +485,6 @@ static int get_tunnel(struct l2tp_data *p)
>   * Command parser
>   *****************************************************************************/
>
> -static int hex2mem(const char *buf, uint8_t *mem, int count)
> -{
> -	int i, j;
> -	int c;
> -
> -	for (i = 0, j = 0; i < count; i++, j += 2) {
> -		c = get_hex(buf[j]);
> -		if (c < 0)
> -			goto err;
> -
> -		mem[i] = c << 4;
> -
> -		c = get_hex(buf[j + 1]);
> -		if (c < 0)
> -			goto err;
> -
> -		mem[i] |= c;
> -	}
> -
> -	return 0;
> -
> -err:
> -	return -1;
> -}
> -
>  static void usage(void) __attribute__((noreturn));
>
>  static void usage(void)
> diff --git a/lib/utils.c b/lib/utils.c
> index 83c9d09..870c4f1 100644
> --- a/lib/utils.c
> +++ b/lib/utils.c
> @@ -962,6 +962,31 @@ __u8 *hexstring_a2n(const char *str, __u8 *buf, int blen, unsigned int *len)
>  	return buf;
>  }
>
> +int hex2mem(const char *buf, uint8_t *mem, int count)
> +{
> +	int i, j;
> +	int c;
> +
> +	for (i = 0, j = 0; i < count; i++, j += 2) {
> +		c = get_hex(buf[j]);
> +		if (c < 0)
> +			goto err;
> +
> +		mem[i] = c << 4;
> +
> +		c = get_hex(buf[j + 1]);
> +		if (c < 0)
> +			goto err;
> +
> +		mem[i] |= c;
> +	}
> +
> +	return 0;
> +
> +err:
> +	return -1;
> +}
> +
>  int addr64_n2a(__u64 addr, char *buff, size_t len)
>  {
>  	__u16 *words = (__u16 *)&addr;
>

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