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Commit 6839da32 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

net: sched: cls_bpf: no need to call tcf_exts_change for newly allocated struct 



As the prog struct was allocated right before cls_bpf_set_parms call,
no need to use tcf_exts_change to do atomic change, and we can just
fill-up the unused exts struct directly by tcf_exts_validate.

Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ff1f8ca0

net/sched/cls_bpf.c

+6 −19
Original line number Diff line number Diff line
@@ -387,7 +387,6 @@ static int cls_bpf_set_parms(struct net *net, struct tcf_proto *tp, 
			     struct nlattr **tb, struct nlattr *est, bool ovr)

{

	bool is_bpf, is_ebpf, have_exts = false;

	struct tcf_exts exts;

	u32 gen_flags = 0;

	int ret;
@@ -396,30 +395,23 @@ static int cls_bpf_set_parms(struct net *net, struct tcf_proto *tp, 
	if ((!is_bpf && !is_ebpf) || (is_bpf && is_ebpf))

		return -EINVAL;



	ret = tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE);

	ret = tcf_exts_validate(net, tp, tb, est, &prog->exts, ovr);

	if (ret < 0)

		return ret;

	ret = tcf_exts_validate(net, tp, tb, est, &exts, ovr);

	if (ret < 0)

		goto errout;



	if (tb[TCA_BPF_FLAGS]) {

		u32 bpf_flags = nla_get_u32(tb[TCA_BPF_FLAGS]);



		if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT) {

			ret = -EINVAL;

			goto errout;

		}

		if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT)

			return -EINVAL;



		have_exts = bpf_flags & TCA_BPF_FLAG_ACT_DIRECT;

	}

	if (tb[TCA_BPF_FLAGS_GEN]) {

		gen_flags = nla_get_u32(tb[TCA_BPF_FLAGS_GEN]);

		if (gen_flags & ~CLS_BPF_SUPPORTED_GEN_FLAGS ||

		    !tc_flags_valid(gen_flags)) {

			ret = -EINVAL;

			goto errout;

		}

		    !tc_flags_valid(gen_flags))

			return -EINVAL;

	}



	prog->exts_integrated = have_exts;
@@ -428,19 +420,14 @@ static int cls_bpf_set_parms(struct net *net, struct tcf_proto *tp, 
	ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) :

		       cls_bpf_prog_from_efd(tb, prog, tp);

	if (ret < 0)

		goto errout;

		return ret;



	if (tb[TCA_BPF_CLASSID]) {

		prog->res.classid = nla_get_u32(tb[TCA_BPF_CLASSID]);

		tcf_bind_filter(tp, &prog->res, base);

	}



	tcf_exts_change(tp, &prog->exts, &exts);

	return 0;



errout:

	tcf_exts_destroy(&exts);

	return ret;

}



static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp,