diff options
Diffstat (limited to '')
| -rw-r--r-- | net/sched/act_sample.c | 63 |
1 files changed, 37 insertions, 26 deletions
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c index ce859b0e0deb..7a25477f5d99 100644 --- a/net/sched/act_sample.c +++ b/net/sched/act_sample.c @@ -23,7 +23,6 @@ #include <linux/if_arp.h> -static unsigned int sample_net_id; static struct tc_action_ops act_sample_ops; static const struct nla_policy sample_policy[TCA_SAMPLE_MAX + 1] = { @@ -38,7 +37,7 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla, struct tcf_proto *tp, u32 flags, struct netlink_ext_ack *extack) { - struct tc_action_net *tn = net_generic(net, sample_net_id); + struct tc_action_net *tn = net_generic(net, act_sample_ops.net_id); bool bind = flags & TCA_ACT_FLAGS_BIND; struct nlattr *tb[TCA_SAMPLE_MAX + 1]; struct psample_group *psample_group; @@ -70,7 +69,7 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla, if (!exists) { ret = tcf_idr_create(tn, index, est, a, - &act_sample_ops, bind, true, 0); + &act_sample_ops, bind, true, flags); if (ret) { tcf_idr_cleanup(tn, index); return ret; @@ -169,7 +168,7 @@ static int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a, psample_group = rcu_dereference_bh(s->psample_group); /* randomly sample packets according to rate */ - if (psample_group && (prandom_u32() % s->rate == 0)) { + if (psample_group && (prandom_u32_max(s->rate) == 0)) { if (!skb_at_tc_ingress(skb)) { md.in_ifindex = skb->skb_iif; md.out_ifindex = skb->dev->ifindex; @@ -241,23 +240,6 @@ nla_put_failure: return -1; } -static int tcf_sample_walker(struct net *net, struct sk_buff *skb, - struct netlink_callback *cb, int type, - const struct tc_action_ops *ops, - struct netlink_ext_ack *extack) -{ - struct tc_action_net *tn = net_generic(net, sample_net_id); - - return tcf_generic_walker(tn, skb, cb, type, ops, extack); -} - -static int tcf_sample_search(struct net *net, struct tc_action **a, u32 index) -{ - struct tc_action_net *tn = net_generic(net, sample_net_id); - - return tcf_idr_search(tn, a, index); -} - static void tcf_psample_group_put(void *priv) { struct psample_group *group = priv; @@ -282,6 +264,36 @@ tcf_sample_get_group(const struct tc_action *a, return group; } +static void tcf_offload_sample_get_group(struct flow_action_entry *entry, + const struct tc_action *act) +{ + entry->sample.psample_group = + act->ops->get_psample_group(act, &entry->destructor); + entry->destructor_priv = entry->sample.psample_group; +} + +static int tcf_sample_offload_act_setup(struct tc_action *act, void *entry_data, + u32 *index_inc, bool bind, + struct netlink_ext_ack *extack) +{ + if (bind) { + struct flow_action_entry *entry = entry_data; + + entry->id = FLOW_ACTION_SAMPLE; + entry->sample.trunc_size = tcf_sample_trunc_size(act); + entry->sample.truncate = tcf_sample_truncate(act); + entry->sample.rate = tcf_sample_rate(act); + tcf_offload_sample_get_group(entry, act); + *index_inc = 1; + } else { + struct flow_offload_action *fl_action = entry_data; + + fl_action->id = FLOW_ACTION_SAMPLE; + } + + return 0; +} + static struct tc_action_ops act_sample_ops = { .kind = "sample", .id = TCA_ID_SAMPLE, @@ -291,28 +303,27 @@ static struct tc_action_ops act_sample_ops = { .dump = tcf_sample_dump, .init = tcf_sample_init, .cleanup = tcf_sample_cleanup, - .walk = tcf_sample_walker, - .lookup = tcf_sample_search, .get_psample_group = tcf_sample_get_group, + .offload_act_setup = tcf_sample_offload_act_setup, .size = sizeof(struct tcf_sample), }; static __net_init int sample_init_net(struct net *net) { - struct tc_action_net *tn = net_generic(net, sample_net_id); + struct tc_action_net *tn = net_generic(net, act_sample_ops.net_id); return tc_action_net_init(net, tn, &act_sample_ops); } static void __net_exit sample_exit_net(struct list_head *net_list) { - tc_action_net_exit(net_list, sample_net_id); + tc_action_net_exit(net_list, act_sample_ops.net_id); } static struct pernet_operations sample_net_ops = { .init = sample_init_net, .exit_batch = sample_exit_net, - .id = &sample_net_id, + .id = &act_sample_ops.net_id, .size = sizeof(struct tc_action_net), }; |