From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Cassen Subject: [PATCH][iproute2] Detect 6rd kernel missing support / 6rd tunnel scope Date: Sun, 4 Apr 2010 22:40:14 +0200 Message-ID: <20100404204014.GA24602@lnxos.staff.proxad.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 To: netdev@vger.kernel.org Return-path: Received: from smtpfb2-g21.free.fr ([212.27.42.10]:44073 "EHLO smtpfb2-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752249Ab0DDUuR (ORCPT ); Sun, 4 Apr 2010 16:50:17 -0400 Received: from smtp2-g21.free.fr (smtp2-g21.free.fr [212.27.42.2]) by smtpfb2-g21.free.fr (Postfix) with ESMTP id 8C388D19C4F for ; Sun, 4 Apr 2010 22:41:23 +0200 (CEST) Received: from smtp2-g21.free.fr (localhost [127.0.0.1]) by smtp2-g21.free.fr (Postfix) with ESMTP id 76E794B00E8 for ; Sun, 4 Apr 2010 22:40:16 +0200 (CEST) Received: from mail.lnxos.net (lnxos.staff.proxad.net [213.228.1.83]) by smtp2-g21.free.fr (Postfix) with ESMTP id 9B9BD4B0012 for ; Sun, 4 Apr 2010 22:40:14 +0200 (CEST) Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: This patch fix two issues: * If kernel is not supporting 6rd then ioctl() call will return EINVAL, if so just skip perror call. * 6rd scope is ipv6/ip tunnels. Dont try to fetch 6rd tunnel parms if tunnel protocol != IPPROTO_IPV6. Signed-off-by: Alexandre Cassen --- ip/iptunnel.c | 2 +- ip/tunnel.c | 11 ++++++----- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/ip/iptunnel.c b/ip/iptunnel.c index 1cd9fbd..3525fbb 100644 --- a/ip/iptunnel.c +++ b/ip/iptunnel.c @@ -365,7 +365,7 @@ static void print_tunnel(struct ip_tunnel_parm *p) if (!(p->iph.frag_off&htons(IP_DF))) printf(" nopmtudisc"); - if (!tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { + if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { printf(" 6rd-prefix %s/%u ", inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), ip6rd.prefixlen); diff --git a/ip/tunnel.c b/ip/tunnel.c index d389e86..6efbd2d 100644 --- a/ip/tunnel.c +++ b/ip/tunnel.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -168,7 +169,7 @@ int tnl_del_ioctl(const char *basedev, const char *name, void *p) return err; } -static int tnl_gen_ioctl(int cmd, const char *name, void *p) +static int tnl_gen_ioctl(int cmd, const char *name, void *p, int skiperr) { struct ifreq ifr; int fd; @@ -178,7 +179,7 @@ static int tnl_gen_ioctl(int cmd, const char *name, void *p) ifr.ifr_ifru.ifru_data = p; fd = socket(preferred_family, SOCK_DGRAM, 0); err = ioctl(fd, cmd, &ifr); - if (err) + if (err && errno != skiperr) perror("ioctl"); close(fd); return err; @@ -186,15 +187,15 @@ static int tnl_gen_ioctl(int cmd, const char *name, void *p) int tnl_prl_ioctl(int cmd, const char *name, void *p) { - return tnl_gen_ioctl(cmd, name, p); + return tnl_gen_ioctl(cmd, name, p, -1); } int tnl_6rd_ioctl(int cmd, const char *name, void *p) { - return tnl_gen_ioctl(cmd, name, p); + return tnl_gen_ioctl(cmd, name, p, -1); } int tnl_ioctl_get_6rd(const char *name, void *p) { - return tnl_gen_ioctl(SIOCGET6RD, name, p); + return tnl_gen_ioctl(SIOCGET6RD, name, p, EINVAL); } -- 1.6.3.3