From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Herbert Subject: [PATCH v3 net-next 11/11] ip6_gre: Add support for fou/gue encapsulation Date: Fri, 6 May 2016 15:12:06 -0700 Message-ID: <1462572726-566137-12-git-send-email-tom@herbertland.com> References: <1462572726-566137-1-git-send-email-tom@herbertland.com> Mime-Version: 1.0 Content-Type: text/plain Cc: To: , Return-path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:54238 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759037AbcEFWMe (ORCPT ); Fri, 6 May 2016 18:12:34 -0400 Received: from pps.filterd (m0044008.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u46MB3oY031309 for ; Fri, 6 May 2016 15:12:29 -0700 Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 22s15pgwps-16 (version=TLSv1 cipher=AES128-SHA bits=128 verify=NOT) for ; Fri, 06 May 2016 15:12:29 -0700 Received: from devbig284.prn2.facebook.com (10.35.15.32) by mx-out.facebook.com (10.212.236.87) with ESMTP id 9d85229c13d711e6ae7d0002c9521c9e-807fcc50 for ; Fri, 06 May 2016 15:12:26 -0700 In-Reply-To: <1462572726-566137-1-git-send-email-tom@herbertland.com> Sender: netdev-owner@vger.kernel.org List-ID: Add netlink and setup for encapsulation Signed-off-by: Tom Herbert --- net/ipv6/ip6_gre.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 70a1f72..ed5ddcc 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1027,6 +1027,8 @@ static int ip6gre_tunnel_init_common(struct net_device *dev) tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags); + tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen; + t_hlen = tunnel->hlen + sizeof(struct ipv6hdr); dev->needed_headroom = LL_MAX_HEADER + t_hlen + 4; @@ -1293,15 +1295,57 @@ static void ip6gre_tap_setup(struct net_device *dev) dev->priv_flags &= ~IFF_TX_SKB_SHARING; } +static bool ip6gre_netlink_encap_parms(struct nlattr *data[], + struct ip_tunnel_encap *ipencap) +{ + bool ret = false; + + memset(ipencap, 0, sizeof(*ipencap)); + + if (!data) + return ret; + + if (data[IFLA_GRE_ENCAP_TYPE]) { + ret = true; + ipencap->type = nla_get_u16(data[IFLA_GRE_ENCAP_TYPE]); + } + + if (data[IFLA_GRE_ENCAP_FLAGS]) { + ret = true; + ipencap->flags = nla_get_u16(data[IFLA_GRE_ENCAP_FLAGS]); + } + + if (data[IFLA_GRE_ENCAP_SPORT]) { + ret = true; + ipencap->sport = nla_get_be16(data[IFLA_GRE_ENCAP_SPORT]); + } + + if (data[IFLA_GRE_ENCAP_DPORT]) { + ret = true; + ipencap->dport = nla_get_be16(data[IFLA_GRE_ENCAP_DPORT]); + } + + return ret; +} + static int ip6gre_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { struct ip6_tnl *nt; struct net *net = dev_net(dev); struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); + struct ip_tunnel_encap ipencap; int err; nt = netdev_priv(dev); + + if (ip6gre_netlink_encap_parms(data, &ipencap)) { + int err = ip6_tnl_encap_setup(nt, &ipencap); + + if (err < 0) + return err; + } + ip6gre_netlink_parms(data, &nt->parms); if (ip6gre_tunnel_find(net, &nt->parms, dev->type)) @@ -1348,10 +1392,18 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[], struct net *net = nt->net; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); struct __ip6_tnl_parm p; + struct ip_tunnel_encap ipencap; if (dev == ign->fb_tunnel_dev) return -EINVAL; + if (ip6gre_netlink_encap_parms(data, &ipencap)) { + int err = ip6_tnl_encap_setup(nt, &ipencap); + + if (err < 0) + return err; + } + ip6gre_netlink_parms(data, &p); t = ip6gre_tunnel_locate(net, &p, 0); @@ -1405,6 +1457,14 @@ static size_t ip6gre_get_size(const struct net_device *dev) nla_total_size(4) + /* IFLA_GRE_FLAGS */ nla_total_size(4) + + /* IFLA_GRE_ENCAP_TYPE */ + nla_total_size(2) + + /* IFLA_GRE_ENCAP_FLAGS */ + nla_total_size(2) + + /* IFLA_GRE_ENCAP_SPORT */ + nla_total_size(2) + + /* IFLA_GRE_ENCAP_DPORT */ + nla_total_size(2) + 0; } @@ -1428,6 +1488,17 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev) nla_put_be32(skb, IFLA_GRE_FLOWINFO, p->flowinfo) || nla_put_u32(skb, IFLA_GRE_FLAGS, p->flags)) goto nla_put_failure; + + if (nla_put_u16(skb, IFLA_GRE_ENCAP_TYPE, + t->encap.type) || + nla_put_be16(skb, IFLA_GRE_ENCAP_SPORT, + t->encap.sport) || + nla_put_be16(skb, IFLA_GRE_ENCAP_DPORT, + t->encap.dport) || + nla_put_u16(skb, IFLA_GRE_ENCAP_FLAGS, + t->encap.flags)) + goto nla_put_failure; + return 0; nla_put_failure: @@ -1446,6 +1517,10 @@ static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = { [IFLA_GRE_ENCAP_LIMIT] = { .type = NLA_U8 }, [IFLA_GRE_FLOWINFO] = { .type = NLA_U32 }, [IFLA_GRE_FLAGS] = { .type = NLA_U32 }, + [IFLA_GRE_ENCAP_TYPE] = { .type = NLA_U16 }, + [IFLA_GRE_ENCAP_FLAGS] = { .type = NLA_U16 }, + [IFLA_GRE_ENCAP_SPORT] = { .type = NLA_U16 }, + [IFLA_GRE_ENCAP_DPORT] = { .type = NLA_U16 }, }; static struct rtnl_link_ops ip6gre_link_ops __read_mostly = { -- 2.8.0.rc2