netdev - Re: [PATCH 1/2] iproute2: Add support for IPv6 VTI tunnels to ip6tunnel

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Date:	Thu, 2 Oct 2014 10:41:09 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Steffen Klassert <steffen.klassert@...unet.com>
Cc:	Stephen Hemminger <stephen@...workplumber.org>,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] iproute2: Add support for IPv6 VTI tunnels to
 ip6tunnel

Fri, Sep 26, 2014 at 09:10:56AM CEST, steffen.klassert@...unet.com wrote:
>
>Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>
>---
> ip/ip6tunnel.c | 15 ++++++++++++---
> 1 file changed, 12 insertions(+), 3 deletions(-)
>
>diff --git a/ip/ip6tunnel.c b/ip/ip6tunnel.c
>index 66f9f2a..4b73ec6 100644
>--- a/ip/ip6tunnel.c
>+++ b/ip/ip6tunnel.c
>@@ -47,7 +47,7 @@ static void usage(void) __attribute__((noreturn));
> static void usage(void)
> {
> 	fprintf(stderr, "Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]\n");
>-	fprintf(stderr, "          [ mode { ip6ip6 | ipip6 | ip6gre | any } ]\n");
>+	fprintf(stderr, "          [ mode { ip6ip6 | ipip6 | ip6gre | vti6 | any } ]\n");
> 	fprintf(stderr, "          [ remote ADDR local ADDR ] [ dev PHYS_DEV ]\n");
> 	fprintf(stderr, "          [ encaplimit ELIM ]\n");
> 	fprintf(stderr ,"          [ hoplimit TTL ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n");
>@@ -140,7 +140,10 @@ static int parse_args(int argc, char **argv, int cmd, struct ip6_tnl_parm2 *p)
> 			if (strcmp(*argv, "ipv6/ipv6") == 0 ||
> 			    strcmp(*argv, "ip6ip6") == 0)
> 				p->proto = IPPROTO_IPV6;
>-			else if (strcmp(*argv, "ip/ipv6") == 0 ||
>+			else if (strcmp(*argv, "vti6") == 0) {
>+				p->proto = IPPROTO_IPV6;
>+				p->i_flags |= VTI_ISVTI;
>+			} else if (strcmp(*argv, "ip/ipv6") == 0 ||
> 				 strcmp(*argv, "ipv4/ipv6") == 0 ||
> 				 strcmp(*argv, "ipip6") == 0 ||
> 				 strcmp(*argv, "ip4ip6") == 0)
>@@ -459,11 +462,14 @@ static int do_add(int cmd, int argc, char **argv)
> 	switch (p.proto) {
> 	case IPPROTO_IPIP:
> 	case IPPROTO_IPV6:
>+	if (p.i_flags != VTI_ISVTI)
>+		return tnl_add_ioctl(cmd, "ip6_vti0", p.name, &p);
                                              ^ Wouldn't it be more
					      consistent to not to use
					      the underscore? 


>+	else
> 		return tnl_add_ioctl(cmd, "ip6tnl0", p.name, &p);
> 	case IPPROTO_GRE:
> 		return tnl_add_ioctl(cmd, "ip6gre0", p.name, &p);
> 	default:
>-		fprintf(stderr, "cannot determine tunnel mode (ip6ip6, ipip6 or gre)\n");
>+		fprintf(stderr, "cannot determine tunnel mode (ip6ip6, ipip6, vti6 or gre)\n");
> 	}
> 	return -1;
> }
>@@ -480,6 +486,9 @@ static int do_del(int argc, char **argv)
> 	switch (p.proto) {
> 	case IPPROTO_IPIP:
> 	case IPPROTO_IPV6:
>+	if (p.i_flags != VTI_ISVTI)
>+		return tnl_del_ioctl("ip6_vti0", p.name, &p);
>+	else
> 		return tnl_del_ioctl("ip6tnl0", p.name, &p);
> 	case IPPROTO_GRE:
> 		return tnl_del_ioctl("ip6gre0", p.name, &p);
>-- 
>1.9.1
>
>--
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