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mlxsw: spectrum: Make the add_matchall_tc_entry symmetric

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Currently, the mlxsw spectrum driver only supports offloading the matchall
classifier together with the mirred action. To allow more matchall tc
offloads, make the code symmetric so that it can be easily extended later
on for other actions.

Signed-off-by: Yotam Gigi <yotamg@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:
Yotam Gigi 2017-01-09 11:25:46 +01:00 committed by David S. Miller
parent 169852718f
commit 65acb5d082
1 changed files with 49 additions and 44 deletions
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93
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@ -1161,8 +1161,8 @@ static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
}
static struct mlxsw_sp_port_mall_tc_entry *
mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
unsigned long cookie) {
mlxsw_sp_port_mall_tc_entry_find(struct mlxsw_sp_port *port,
unsigned long cookie) {
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
@ -1174,17 +1174,15 @@ mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
static int
mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls,
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror,
const struct tc_action *a,
bool ingress)
{
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
struct net *net = dev_net(mlxsw_sp_port->dev);
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
struct net_device *to_dev;
int ifindex;
int err;
ifindex = tcf_mirred_ifindex(a);
to_dev = __dev_get_by_index(net, ifindex);
@ -1199,26 +1197,24 @@ mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
}
to_port = netdev_priv(to_dev);
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
mall_tc_entry->cookie = cls->cookie;
mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
mall_tc_entry->mirror.to_local_port = to_port->local_port;
mall_tc_entry->mirror.ingress = ingress;
list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
mirror->to_local_port = to_port->local_port;
mirror->ingress = ingress;
span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
if (err)
goto err_mirror_add;
return 0;
return mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
}
err_mirror_add:
list_del(&mall_tc_entry->list);
kfree(mall_tc_entry);
return err;
static void
mlxsw_sp_port_del_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
to_port = mlxsw_sp->ports[mirror->to_local_port];
span_type = mirror->ingress ?
MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
}
static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
@ -1226,6 +1222,7 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
const struct tc_action *a;
LIST_HEAD(actions);
int err;
@ -1235,50 +1232,58 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
return -ENOTSUPP;
}
tcf_exts_to_list(cls->exts, &actions);
list_for_each_entry(a, &actions, list) {
if (!is_tcf_mirred_egress_mirror(a) ||
protocol != htons(ETH_P_ALL)) {
return -ENOTSUPP;
}
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
mall_tc_entry->cookie = cls->cookie;
err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
a, ingress);
if (err)
return err;
tcf_exts_to_list(cls->exts, &actions);
a = list_first_entry(&actions, struct tc_action, list);
if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror;
mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
mirror = &mall_tc_entry->mirror;
err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port,
mirror, a, ingress);
} else {
err = -EOPNOTSUPP;
}
if (err)
goto err_add_action;
list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
return 0;
err_add_action:
kfree(mall_tc_entry);
return err;
}
static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
cls->cookie);
mall_tc_entry = mlxsw_sp_port_mall_tc_entry_find(mlxsw_sp_port,
cls->cookie);
if (!mall_tc_entry) {
netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
return;
}
list_del(&mall_tc_entry->list);
switch (mall_tc_entry->type) {
case MLXSW_SP_PORT_MALL_MIRROR:
to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
span_type = mall_tc_entry->mirror.ingress ?
MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
mlxsw_sp_port_del_cls_matchall_mirror(mlxsw_sp_port,
&mall_tc_entry->mirror);
break;
default:
WARN_ON(1);
}
list_del(&mall_tc_entry->list);
kfree(mall_tc_entry);
}