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mlxsw: spectrum_ipip: Support decoding IPv6 tunnel addresses 

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>
This commit is contained in:
Petr Machata 2018-02-27 14:53:36 +01:00 committed by David S. Miller
parent 7e58a6c662
commit 8897207c89
2 changed files with 29 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c
View File

@ -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 net_device *ol_dev)
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);
@ -72,24 +81,38 @@ mlxsw_sp_ipip_parms4_saddr(struct ip_tunnel_parm parms)
return (union mlxsw_sp_l3addr) { .addr4 = parms.iph.saddr };
}
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_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_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);

2
drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
View File

@ -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,