Re: [PATCH] iscsi: use IP_FREEBIND socket option

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Looks good to me.

Reviewed-by: Andy Grover <agrover@xxxxxxxxxx>

On 02/03/2012 10:40 PM, Dax Kelson wrote:
> Use IP_FREEBIND socket option so that iscsi portal configuration with
> explicit IP addresses can happen during boot, before network interfaces
> have been assigned IPs.
> 
> This is especially important on systemd based Linux boxes where system
> boot happens asynchronously and non-trivial configuration must be done
> to get targetcli.service to start synchronously after the network is
> configured.
> 
> Reference:
> http://lists.fedoraproject.org/pipermail/devel/2011-October/158025.html
> 
> Signed-off-by: Dax Kelson <dkelson@xxxxxxxxxxxx>
> Cc: "Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx>
> Cc: "Andy Grover" <agrover@xxxxxxxxxx>
> Cc: "Lennart Poettering" <lennart@xxxxxxxxxxxxxx>
> ---
>  drivers/target/iscsi/iscsi_target_login.c |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
> index ec47a7c..38cb7ce 100644
> --- a/drivers/target/iscsi/iscsi_target_login.c
> +++ b/drivers/target/iscsi/iscsi_target_login.c
> @@ -842,6 +842,14 @@ int iscsi_target_setup_login_socket(
>  		goto fail;
>  	}
>  
> +	ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND,
> +			(char *)&opt, sizeof(opt));
> +	if (ret < 0) {
> +		pr_err("kernel_setsockopt() for IP_FREEBIND"
> +			" failed\n");
> +		goto fail;
> +	}
> +
>  	ret = kernel_bind(sock, (struct sockaddr *)&np->np_sockaddr, len);
>  	if (ret < 0) {
>  		pr_err("kernel_bind() failed: %d\n", ret);

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