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bpf: Refactor cgroups code in prep for new type

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Code move and rename only; no functional change intended.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2016-12-01 08:48:03 -08:00
committed by David S. Miller
parent 7f7bf1606f
commit b2cd12574a
3 changed files with 42 additions and 40 deletions
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28
kernel/bpf/syscall.c
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@@ -856,6 +856,7 @@ static int bpf_prog_attach(const union bpf_attr *attr)
{
struct bpf_prog *prog;
struct cgroup *cgrp;
enum bpf_prog_type ptype;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
@@ -866,25 +867,26 @@ static int bpf_prog_attach(const union bpf_attr *attr)
switch (attr->attach_type) {
case BPF_CGROUP_INET_INGRESS:
case BPF_CGROUP_INET_EGRESS:
prog = bpf_prog_get_type(attr->attach_bpf_fd,
BPF_PROG_TYPE_CGROUP_SKB);
if (IS_ERR(prog))
return PTR_ERR(prog);
cgrp = cgroup_get_from_fd(attr->target_fd);
if (IS_ERR(cgrp)) {
bpf_prog_put(prog);
return PTR_ERR(cgrp);
}
cgroup_bpf_update(cgrp, prog, attr->attach_type);
cgroup_put(cgrp);
ptype = BPF_PROG_TYPE_CGROUP_SKB;
break;
default:
return -EINVAL;
}
prog = bpf_prog_get_type(attr->attach_bpf_fd, ptype);
if (IS_ERR(prog))
return PTR_ERR(prog);
cgrp = cgroup_get_from_fd(attr->target_fd);
if (IS_ERR(cgrp)) {
bpf_prog_put(prog);
return PTR_ERR(cgrp);
}
cgroup_bpf_update(cgrp, prog, attr->attach_type);
cgroup_put(cgrp);
return 0;
}