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mlxsw: spectrum: Fix compilation error when CLS_ACT isn't set

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When CONFIG_NET_CLS_ACT isn't set 'struct tcf_exts' has no member named
'actions' and we therefore must not access it. Otherwise compilation
fails.

Fix this by introducing a new macro similar to tc_no_actions(), which
always returns 'false' if CONFIG_NET_CLS_ACT isn't set.

Fixes: 763b4b70af ("mlxsw: spectrum: Add support in matchall mirror TC offloading")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-07-25 13:12:33 +03:00 committed by David S. Miller
parent 3568bdf041
commit 86cb13e4ec
2 changed files with 9 additions and 6 deletions
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11
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -1148,23 +1148,22 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
struct tcf_exts *exts = cls->exts;
const struct tc_action *a;
int err;
if (!list_is_singular(&exts->actions)) {
if (!tc_single_action(cls->exts)) {
netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
return -ENOTSUPP;
}
a = list_first_entry(&exts->actions, struct tc_action, list);
if (is_tcf_mirred_mirror(a) && protocol == htons(ETH_P_ALL)) {
tc_for_each_action(a, cls->exts) {
if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
return -ENOTSUPP;
err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
a, ingress);
if (err)
return err;
} else {
return -ENOTSUPP;
}
return 0;

4
include/net/act_api.h
View File

@ -192,6 +192,9 @@ int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);
#define tc_for_each_action(_a, _exts) \
list_for_each_entry(a, &(_exts)->actions, list)
#define tc_single_action(_exts) \
(list_is_singular(&(_exts)->actions))
static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,
u64 packets, u64 lastuse)
{
@ -205,6 +208,7 @@ static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,
#define tc_no_actions(_exts) true
#define tc_for_each_action(_a, _exts) while ((void)(_a), 0)
#define tc_single_action(_exts) false
#define tcf_action_stats_update(a, bytes, packets, lastuse)
#endif /* CONFIG_NET_CLS_ACT */