openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

cls_bpf: also dump TCA_BPF_FLAGS 

In commit 43388da42a49 ("cls_bpf: introduce integrated actions") we
have added TCA_BPF_FLAGS. We can also retrieve this information from
the prog, dump it back to user space as well. It's useful in tc when
displaying/dumping filter info.

Also, remove tp from cls_bpf_prog_from_efd(), came in as a conflict
from a rebase and it's unused here (later work may add it along with
a real user).

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2015-09-23 21:56:46 +02:00 committed by David S. Miller
parent e1ffc0cd2c
commit bf007d1c75
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
net/sched/cls_bpf.c
View File

@ -265,8 +265,7 @@ static int cls_bpf_prog_from_ops(struct nlattr **tb, struct cls_bpf_prog *prog)
return 0;
}
static int cls_bpf_prog_from_efd(struct nlattr **tb, struct cls_bpf_prog *prog,
const struct tcf_proto *tp)
static int cls_bpf_prog_from_efd(struct nlattr **tb, struct cls_bpf_prog *prog)
{
struct bpf_prog *fp;
char *name = NULL;
@ -339,7 +338,7 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
prog->exts_integrated = have_exts;
ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) :
cls_bpf_prog_from_efd(tb, prog, tp);
cls_bpf_prog_from_efd(tb, prog);
if (ret < 0) {
tcf_exts_destroy(&exts);
return ret;
@ -468,6 +467,7 @@ static int cls_bpf_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
{
struct cls_bpf_prog *prog = (struct cls_bpf_prog *) fh;
struct nlattr *nest;
u32 bpf_flags = 0;
int ret;
if (prog == NULL)
@ -492,6 +492,11 @@ static int cls_bpf_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
if (tcf_exts_dump(skb, &prog->exts) < 0)
goto nla_put_failure;
if (prog->exts_integrated)
bpf_flags |= TCA_BPF_FLAG_ACT_DIRECT;
if (bpf_flags && nla_put_u32(skb, TCA_BPF_FLAGS, bpf_flags))
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &prog->exts) < 0)