Re: [Qemu-devel] [PATCH RFC 4/4] net/slirp: add ipv6-hostfwd option for user netdev type

[Thomas Huth <thuth@redhat.com>]

On 2018-10-26 01:03, Maxim Samoylov wrote:
> This allows forwarding TCP6 and UDP6 connections down to
> netdev=user connected guests.
> 
> Signed-off-by: Maxim Samoylov <max7255@yandex-team.ru>
> ---
>  hmp-commands.hx     |  31 ++++++++
>  include/net/slirp.h |   2 +
>  net/slirp.c         | 214 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  qapi/net.json       |   3 +-
>  4 files changed, 249 insertions(+), 1 deletion(-)
> 
> diff --git a/hmp-commands.hx b/hmp-commands.hx
> index db0c681..b0e1a08 100644
> --- a/hmp-commands.hx
> +++ b/hmp-commands.hx
> @@ -1448,6 +1448,37 @@ STEXI
>  Remove host-to-guest TCP or UDP redirection.
>  ETEXI
>  
> +#ifdef CONFIG_SLIRP
> +    {
> +        .name       = "ipv6_hostfwd_add",
> +        .args_type  = "arg1:s,arg2:s?,arg3:s?",
> +        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr6]:hostport-guestaddr6:guestport",
> +        .help       = "redirect TCP6 or UDP6 connections from host to guest (requires -net user)",
> +        .cmd        = hmp_ipv6_hostfwd_add,
> +    },
> +#endif
> +STEXI
> +@item hostfwd_add
> +@findex hostfwd_add
> +Redirect TCP6 or UDP6 connections from host to guest (requires -net user).
> +ETEXI
> +
> +#ifdef CONFIG_SLIRP
> +    {
> +        .name       = "ipv6_hostfwd_remove",
> +        .args_type  = "arg1:s,arg2:s?,arg3:s?",
> +        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr6]:hostport",
> +        .help       = "remove host-to-guest TCP6 or UDP6 redirection",
> +        .cmd        = hmp_ipv6_hostfwd_remove,
> +    },

 Hi,

could you please remove the "[hub_id name]" touple here? I recently sent
a patch to deprecate it for the IPv4 version, too:

https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03198.html

Also I think it would make sense if you mention in the help text that
IPv6 addresses have to be given with square brackets?

 Thanks,
  Thomas