diff options
| author | Baowen Zheng <baowen.zheng@corigine.com> | 2021-12-17 19:16:28 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-12-19 14:08:48 +0000 |
| commit | c86e0209dc7725c91583e3c0c78c3da6a28daeb4 (patch) | |
| tree | c1898a794730eb8eaf572ada61f5367bf4021e42 /net/sched/act_api.c | |
| parent | 13926d19a11e303f12571df61b7bb64f17cb4561 (diff) | |
flow_offload: validate flags of filter and actions
Add process to validate flags of filter and actions when adding
a tc filter.
We need to prevent adding filter with flags conflicts with its actions.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_api.c')
| -rw-r--r-- | net/sched/act_api.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 99f998be2040..b2f8a393d3c5 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -1385,7 +1385,8 @@ static bool tc_act_bind(u32 flags) int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla, struct nlattr *est, struct tc_action *actions[], - int init_res[], size_t *attr_size, u32 flags, + int init_res[], size_t *attr_size, + u32 flags, u32 fl_flags, struct netlink_ext_ack *extack) { struct tc_action_ops *ops[TCA_ACT_MAX_PRIO] = {}; @@ -1423,7 +1424,18 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla, sz += tcf_action_fill_size(act); /* Start from index 0 */ actions[i - 1] = act; - if (!tc_act_bind(flags)) { + if (tc_act_bind(flags)) { + bool skip_sw = tc_skip_sw(fl_flags); + bool skip_hw = tc_skip_hw(fl_flags); + + if (tc_act_bind(act->tcfa_flags)) + continue; + if (skip_sw != tc_act_skip_sw(act->tcfa_flags) || + skip_hw != tc_act_skip_hw(act->tcfa_flags)) { + err = -EINVAL; + goto err; + } + } else { err = tcf_action_offload_add(act, extack); if (tc_act_skip_sw(act->tcfa_flags) && err) goto err; @@ -1926,7 +1938,7 @@ static int tcf_action_add(struct net *net, struct nlattr *nla, for (loop = 0; loop < 10; loop++) { ret = tcf_action_init(net, NULL, nla, NULL, actions, init_res, - &attr_size, flags, extack); + &attr_size, flags, 0, extack); if (ret != -EAGAIN) break; } |