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mlxsw: spectrum_router: Extract __mlxsw_sp_ipip_entry_update_tunnel()

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The work that's done by mlxsw_sp_netdevice_ipip_ol_vrf_event() is a good
basis for a more versatile function that would take care of all sorts of
tunnel updates requests: __mlxsw_sp_ipip_entry_update_tunnel(). Extract
that function. Factor out a helper mlxsw_sp_ipip_entry_ol_lb_update() as
well.

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 2017-11-03 10:03:37 +01:00 committed by David S. Miller
parent 7e75af6366
commit 65a6121b30
1 changed files with 45 additions and 27 deletions
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72
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -1355,46 +1355,64 @@ static void mlxsw_sp_netdevice_ipip_ol_down_event(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry);
}
static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp,
struct net_device *ol_dev,
struct netlink_ext_ack *extack)
static int
mlxsw_sp_ipip_entry_ol_lb_update(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_ipip_entry *ipip_entry,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_fib_entry *decap_fib_entry;
struct mlxsw_sp_ipip_entry *ipip_entry;
struct mlxsw_sp_rif_ipip_lb *lb_rif;
struct mlxsw_sp_rif_ipip_lb *old_lb_rif = ipip_entry->ol_lb;
struct mlxsw_sp_rif_ipip_lb *new_lb_rif;
ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
if (!ipip_entry)
return 0;
new_lb_rif = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp,
ipip_entry->ipipt,
ipip_entry->ol_dev,
extack);
if (IS_ERR(new_lb_rif))
return PTR_ERR(new_lb_rif);
ipip_entry->ol_lb = new_lb_rif;
mlxsw_sp_rif_destroy(&old_lb_rif->common);
/* When a tunneling device is moved to a different VRF, we need to
* update the backing loopback. Since RIFs can't be edited, we need to
* destroy and recreate it. That might create a window of opportunity
* where RALUE and RATR registers end up referencing a RIF that's
* already gone. RATRs are handled by the RIF destroy, and to take care
return 0;
}
int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_ipip_entry *ipip_entry,
struct netlink_ext_ack *extack)
{
int err;
/* RIFs can't be edited, so to update loopback, we need to destroy and
* recreate it. That creates a window of opportunity where RALUE and
* RATR registers end up referencing a RIF that's already gone. RATRs
* are handled in mlxsw_sp_ipip_entry_ol_lb_update(), and to take care
* of RALUE, demote the decap route back.
*/
if (ipip_entry->decap_fib_entry)
mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry);
lb_rif = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, ipip_entry->ipipt,
ol_dev, extack);
if (IS_ERR(lb_rif))
return PTR_ERR(lb_rif);
mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common);
ipip_entry->ol_lb = lb_rif;
err = mlxsw_sp_ipip_entry_ol_lb_update(mlxsw_sp, ipip_entry, extack);
if (err)
return err;
if (ol_dev->flags & IFF_UP) {
decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp,
ipip_entry);
if (decap_fib_entry)
mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry,
decap_fib_entry);
}
if (ipip_entry->ol_dev->flags & IFF_UP)
mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry);
return 0;
}
static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp,
struct net_device *ol_dev,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_ipip_entry *ipip_entry =
mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
if (!ipip_entry)
return 0;
return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
extack);
}
int mlxsw_sp_netdevice_ipip_ol_event(struct mlxsw_sp *mlxsw_sp,
struct net_device *ol_dev,
unsigned long event,