diff options
Diffstat (limited to 'net/sched/act_bpf.c')
| -rw-r--r-- | net/sched/act_bpf.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c index 6203eb075c9a..9b30e62805c7 100644 --- a/net/sched/act_bpf.c +++ b/net/sched/act_bpf.c @@ -34,8 +34,8 @@ struct tcf_bpf_cfg { static unsigned int bpf_net_id; static struct tc_action_ops act_bpf_ops; -static int tcf_bpf(struct sk_buff *skb, const struct tc_action *act, - struct tcf_result *res) +static int tcf_bpf_act(struct sk_buff *skb, const struct tc_action *act, + struct tcf_result *res) { bool at_ingress = skb_at_tc_ingress(skb); struct tcf_bpf *prog = to_bpf(act); @@ -143,11 +143,12 @@ static int tcf_bpf_dump(struct sk_buff *skb, struct tc_action *act, .index = prog->tcf_index, .refcnt = refcount_read(&prog->tcf_refcnt) - ref, .bindcnt = atomic_read(&prog->tcf_bindcnt) - bind, - .action = prog->tcf_action, }; struct tcf_t tm; int ret; + spin_lock(&prog->tcf_lock); + opt.action = prog->tcf_action; if (nla_put(skb, TCA_ACT_BPF_PARMS, sizeof(opt), &opt)) goto nla_put_failure; @@ -163,9 +164,11 @@ static int tcf_bpf_dump(struct sk_buff *skb, struct tc_action *act, TCA_ACT_BPF_PAD)) goto nla_put_failure; + spin_unlock(&prog->tcf_lock); return skb->len; nla_put_failure: + spin_unlock(&prog->tcf_lock); nlmsg_trim(skb, tp); return -1; } @@ -264,7 +267,7 @@ static void tcf_bpf_prog_fill_cfg(const struct tcf_bpf *prog, { cfg->is_ebpf = tcf_bpf_is_ebpf(prog); /* updates to prog->filter are prevented, since it's called either - * with rtnl lock or during final cleanup in rcu callback + * with tcf lock or during final cleanup in rcu callback */ cfg->filter = rcu_dereference_protected(prog->filter, 1); @@ -336,8 +339,8 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla, goto out; prog = to_bpf(*act); - ASSERT_RTNL(); + spin_lock(&prog->tcf_lock); if (res != ACT_P_CREATED) tcf_bpf_prog_fill_cfg(prog, &old); @@ -349,6 +352,7 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla, prog->tcf_action = parm->action; rcu_assign_pointer(prog->filter, cfg.filter); + spin_unlock(&prog->tcf_lock); if (res == ACT_P_CREATED) { tcf_idr_insert(tn, *act); @@ -402,7 +406,7 @@ static struct tc_action_ops act_bpf_ops __read_mostly = { .kind = "bpf", .type = TCA_ACT_BPF, .owner = THIS_MODULE, - .act = tcf_bpf, + .act = tcf_bpf_act, .dump = tcf_bpf_dump, .cleanup = tcf_bpf_cleanup, .init = tcf_bpf_init, |
