linux-stable/tools/bpf/bpftool/netlink_dumper.c
Toke Høiland-Jørgensen 229c3b47b7 bpftool: Use consistent include paths for libbpf
Fix bpftool to include libbpf header files with the bpf/ prefix, to be
consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.

To make sure no new files are introduced that doesn't include the bpf/
prefix in its include, remove tools/lib/bpf from the include path entirely,
and use tools/lib instead.

Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560684.1683545.4765181397974997027.stgit@toke.dk
2020-01-20 16:37:45 -08:00

178 lines
4.2 KiB
C

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
// Copyright (C) 2018 Facebook
#include <stdlib.h>
#include <string.h>
#include <bpf/libbpf.h>
#include <linux/rtnetlink.h>
#include <linux/tc_act/tc_bpf.h>
#include "bpf/nlattr.h"
#include "main.h"
#include "netlink_dumper.h"
static void xdp_dump_prog_id(struct nlattr **tb, int attr,
const char *mode,
bool new_json_object)
{
if (!tb[attr])
return;
if (new_json_object)
NET_START_OBJECT
NET_DUMP_STR("mode", " %s", mode);
NET_DUMP_UINT("id", " id %u", libbpf_nla_getattr_u32(tb[attr]))
if (new_json_object)
NET_END_OBJECT
}
static int do_xdp_dump_one(struct nlattr *attr, unsigned int ifindex,
const char *name)
{
struct nlattr *tb[IFLA_XDP_MAX + 1];
unsigned char mode;
if (libbpf_nla_parse_nested(tb, IFLA_XDP_MAX, attr, NULL) < 0)
return -1;
if (!tb[IFLA_XDP_ATTACHED])
return 0;
mode = libbpf_nla_getattr_u8(tb[IFLA_XDP_ATTACHED]);
if (mode == XDP_ATTACHED_NONE)
return 0;
NET_START_OBJECT;
if (name)
NET_DUMP_STR("devname", "%s", name);
NET_DUMP_UINT("ifindex", "(%d)", ifindex);
if (mode == XDP_ATTACHED_MULTI) {
if (json_output) {
jsonw_name(json_wtr, "multi_attachments");
jsonw_start_array(json_wtr);
}
xdp_dump_prog_id(tb, IFLA_XDP_SKB_PROG_ID, "generic", true);
xdp_dump_prog_id(tb, IFLA_XDP_DRV_PROG_ID, "driver", true);
xdp_dump_prog_id(tb, IFLA_XDP_HW_PROG_ID, "offload", true);
if (json_output)
jsonw_end_array(json_wtr);
} else if (mode == XDP_ATTACHED_DRV) {
xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "driver", false);
} else if (mode == XDP_ATTACHED_SKB) {
xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "generic", false);
} else if (mode == XDP_ATTACHED_HW) {
xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "offload", false);
}
NET_END_OBJECT_FINAL;
return 0;
}
int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb)
{
if (!tb[IFLA_XDP])
return 0;
return do_xdp_dump_one(tb[IFLA_XDP], ifinfo->ifi_index,
libbpf_nla_getattr_str(tb[IFLA_IFNAME]));
}
static int do_bpf_dump_one_act(struct nlattr *attr)
{
struct nlattr *tb[TCA_ACT_BPF_MAX + 1];
if (libbpf_nla_parse_nested(tb, TCA_ACT_BPF_MAX, attr, NULL) < 0)
return -LIBBPF_ERRNO__NLPARSE;
if (!tb[TCA_ACT_BPF_PARMS])
return -LIBBPF_ERRNO__NLPARSE;
NET_START_OBJECT_NESTED2;
if (tb[TCA_ACT_BPF_NAME])
NET_DUMP_STR("name", "%s",
libbpf_nla_getattr_str(tb[TCA_ACT_BPF_NAME]));
if (tb[TCA_ACT_BPF_ID])
NET_DUMP_UINT("id", " id %u",
libbpf_nla_getattr_u32(tb[TCA_ACT_BPF_ID]));
NET_END_OBJECT_NESTED;
return 0;
}
static int do_dump_one_act(struct nlattr *attr)
{
struct nlattr *tb[TCA_ACT_MAX + 1];
if (!attr)
return 0;
if (libbpf_nla_parse_nested(tb, TCA_ACT_MAX, attr, NULL) < 0)
return -LIBBPF_ERRNO__NLPARSE;
if (tb[TCA_ACT_KIND] &&
strcmp(libbpf_nla_data(tb[TCA_ACT_KIND]), "bpf") == 0)
return do_bpf_dump_one_act(tb[TCA_ACT_OPTIONS]);
return 0;
}
static int do_bpf_act_dump(struct nlattr *attr)
{
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
int act, ret;
if (libbpf_nla_parse_nested(tb, TCA_ACT_MAX_PRIO, attr, NULL) < 0)
return -LIBBPF_ERRNO__NLPARSE;
NET_START_ARRAY("act", " %s [");
for (act = 0; act <= TCA_ACT_MAX_PRIO; act++) {
ret = do_dump_one_act(tb[act]);
if (ret)
break;
}
NET_END_ARRAY("] ");
return ret;
}
static int do_bpf_filter_dump(struct nlattr *attr)
{
struct nlattr *tb[TCA_BPF_MAX + 1];
int ret;
if (libbpf_nla_parse_nested(tb, TCA_BPF_MAX, attr, NULL) < 0)
return -LIBBPF_ERRNO__NLPARSE;
if (tb[TCA_BPF_NAME])
NET_DUMP_STR("name", " %s",
libbpf_nla_getattr_str(tb[TCA_BPF_NAME]));
if (tb[TCA_BPF_ID])
NET_DUMP_UINT("id", " id %u",
libbpf_nla_getattr_u32(tb[TCA_BPF_ID]));
if (tb[TCA_BPF_ACT]) {
ret = do_bpf_act_dump(tb[TCA_BPF_ACT]);
if (ret)
return ret;
}
return 0;
}
int do_filter_dump(struct tcmsg *info, struct nlattr **tb, const char *kind,
const char *devname, int ifindex)
{
int ret = 0;
if (tb[TCA_OPTIONS] &&
strcmp(libbpf_nla_data(tb[TCA_KIND]), "bpf") == 0) {
NET_START_OBJECT;
if (devname[0] != '\0')
NET_DUMP_STR("devname", "%s", devname);
NET_DUMP_UINT("ifindex", "(%u)", ifindex);
NET_DUMP_STR("kind", " %s", kind);
ret = do_bpf_filter_dump(tb[TCA_OPTIONS]);
NET_END_OBJECT_FINAL;
}
return ret;
}