From: Petr Machata <petrm@mellanox.com>
Date: Tue, 27 Feb 2018 14:53:36 +0100
Subject: mlxsw: spectrum_ipip: Support decoding IPv6 tunnel addresses
Patch-mainline: v4.17-rc1
Git-commit: 8897207c89156a5d05dc5bf1a80dede21e768f0a
References: bsc#1112374
To support mirroring to ip6gretap, the SPAN module needs to be able to
decode IPv6 addresses specified at that tunnel.
Extend mlxsw_sp_ipip_netdev_saddr() and mlxsw_sp_ipip_netdev_daddr() to
support IPv6 addresses. To that end, add and publish a support function
mlxsw_sp_ipip_netdev_parms6().
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c | 29 ++++++++++++++++++--
drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h | 2 +
2 files changed, 29 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c
@@ -33,6 +33,7 @@
*/
#include <net/ip_tunnels.h>
+#include <net/ip6_tunnel.h>
#include "spectrum_ipip.h"
@@ -44,6 +45,14 @@ mlxsw_sp_ipip_netdev_parms4(const struct
return tun->parms;
}
+struct __ip6_tnl_parm
+mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev)
+{
+ struct ip6_tnl *tun = netdev_priv(ol_dev);
+
+ return tun->parms;
+}
+
static bool mlxsw_sp_ipip_parms4_has_ikey(struct ip_tunnel_parm parms)
{
return !!(parms.i_flags & TUNNEL_KEY);
@@ -73,23 +82,37 @@ mlxsw_sp_ipip_parms4_saddr(struct ip_tun
}
static union mlxsw_sp_l3addr
+mlxsw_sp_ipip_parms6_saddr(struct __ip6_tnl_parm parms)
+{
+ return (union mlxsw_sp_l3addr) { .addr6 = parms.laddr };
+}
+
+static union mlxsw_sp_l3addr
mlxsw_sp_ipip_parms4_daddr(struct ip_tunnel_parm parms)
{
return (union mlxsw_sp_l3addr) { .addr4 = parms.iph.daddr };
}
+static union mlxsw_sp_l3addr
+mlxsw_sp_ipip_parms6_daddr(struct __ip6_tnl_parm parms)
+{
+ return (union mlxsw_sp_l3addr) { .addr6 = parms.raddr };
+}
+
union mlxsw_sp_l3addr
mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
const struct net_device *ol_dev)
{
struct ip_tunnel_parm parms4;
+ struct __ip6_tnl_parm parms6;
switch (proto) {
case MLXSW_SP_L3_PROTO_IPV4:
parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
return mlxsw_sp_ipip_parms4_saddr(parms4);
case MLXSW_SP_L3_PROTO_IPV6:
- break;
+ parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
+ return mlxsw_sp_ipip_parms6_saddr(parms6);
}
WARN_ON(1);
@@ -109,13 +132,15 @@ mlxsw_sp_ipip_netdev_daddr(enum mlxsw_sp
const struct net_device *ol_dev)
{
struct ip_tunnel_parm parms4;
+ struct __ip6_tnl_parm parms6;
switch (proto) {
case MLXSW_SP_L3_PROTO_IPV4:
parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
return mlxsw_sp_ipip_parms4_daddr(parms4);
case MLXSW_SP_L3_PROTO_IPV6:
- break;
+ parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
+ return mlxsw_sp_ipip_parms6_daddr(parms6);
}
WARN_ON(1);
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
@@ -41,6 +41,8 @@
struct ip_tunnel_parm
mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev);
+struct __ip6_tnl_parm
+mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev);
union mlxsw_sp_l3addr
mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,