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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: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-08-04 14:29:10 +02:00 committed by David S. Miller
parent ff1f8ca080
commit 6839da326d
1 changed files with 6 additions and 19 deletions
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25
net/sched/cls_bpf.c
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@ -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,