![Jakub Kicinski](/assets/img/avatar_default.png)
Currently bpftool contains a mix of GPL-only and GPL or BSD2 licensed files. Make sure all files are dual licensed under GPLv2 and BSD-2-Clause. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Stanislav Fomichev <sdf@google.com> Acked-by: Sean Young <sean@mess.org> Acked-by: Jiri Benc <jbenc@redhat.com> Acked-by: David Calavera <david.calavera@gmail.com> Acked-by: Andrey Ignatov <rdna@fb.com> Acked-by: Joe Stringer <joe@wand.net.nz> Acked-by: David Ahern <dsahern@gmail.com> Acked-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Acked-by: Petar Penkov <ppenkov@stanford.edu> Acked-by: Sandipan Das <sandipan@linux.ibm.com> Acked-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Taeung Song <treeze.taeung@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> CC: okash.khawaja@gmail.com Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
179 lines
4.2 KiB
C
179 lines
4.2 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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// Copyright (C) 2018 Facebook
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#include <stdlib.h>
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#include <string.h>
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#include <libbpf.h>
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#include <linux/rtnetlink.h>
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#include <linux/tc_act/tc_bpf.h>
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#include <nlattr.h>
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#include "main.h"
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#include "netlink_dumper.h"
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static void xdp_dump_prog_id(struct nlattr **tb, int attr,
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const char *mode,
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bool new_json_object)
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{
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if (!tb[attr])
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return;
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if (new_json_object)
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NET_START_OBJECT
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NET_DUMP_STR("mode", " %s", mode);
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NET_DUMP_UINT("id", " id %u", libbpf_nla_getattr_u32(tb[attr]))
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if (new_json_object)
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NET_END_OBJECT
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}
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static int do_xdp_dump_one(struct nlattr *attr, unsigned int ifindex,
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const char *name)
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{
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struct nlattr *tb[IFLA_XDP_MAX + 1];
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unsigned char mode;
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if (libbpf_nla_parse_nested(tb, IFLA_XDP_MAX, attr, NULL) < 0)
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return -1;
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if (!tb[IFLA_XDP_ATTACHED])
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return 0;
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mode = libbpf_nla_getattr_u8(tb[IFLA_XDP_ATTACHED]);
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if (mode == XDP_ATTACHED_NONE)
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return 0;
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NET_START_OBJECT;
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if (name)
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NET_DUMP_STR("devname", "%s", name);
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NET_DUMP_UINT("ifindex", "(%d)", ifindex);
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if (mode == XDP_ATTACHED_MULTI) {
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if (json_output) {
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jsonw_name(json_wtr, "multi_attachments");
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jsonw_start_array(json_wtr);
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}
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xdp_dump_prog_id(tb, IFLA_XDP_SKB_PROG_ID, "generic", true);
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xdp_dump_prog_id(tb, IFLA_XDP_DRV_PROG_ID, "driver", true);
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xdp_dump_prog_id(tb, IFLA_XDP_HW_PROG_ID, "offload", true);
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if (json_output)
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jsonw_end_array(json_wtr);
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} else if (mode == XDP_ATTACHED_DRV) {
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xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "driver", false);
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} else if (mode == XDP_ATTACHED_SKB) {
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xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "generic", false);
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} else if (mode == XDP_ATTACHED_HW) {
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xdp_dump_prog_id(tb, IFLA_XDP_PROG_ID, "offload", false);
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}
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NET_END_OBJECT_FINAL;
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return 0;
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}
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int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb)
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{
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if (!tb[IFLA_XDP])
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return 0;
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return do_xdp_dump_one(tb[IFLA_XDP], ifinfo->ifi_index,
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libbpf_nla_getattr_str(tb[IFLA_IFNAME]));
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}
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static int do_bpf_dump_one_act(struct nlattr *attr)
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{
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struct nlattr *tb[TCA_ACT_BPF_MAX + 1];
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if (libbpf_nla_parse_nested(tb, TCA_ACT_BPF_MAX, attr, NULL) < 0)
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return -LIBBPF_ERRNO__NLPARSE;
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if (!tb[TCA_ACT_BPF_PARMS])
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return -LIBBPF_ERRNO__NLPARSE;
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NET_START_OBJECT_NESTED2;
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if (tb[TCA_ACT_BPF_NAME])
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NET_DUMP_STR("name", "%s",
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libbpf_nla_getattr_str(tb[TCA_ACT_BPF_NAME]));
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if (tb[TCA_ACT_BPF_ID])
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NET_DUMP_UINT("id", " id %u",
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libbpf_nla_getattr_u32(tb[TCA_ACT_BPF_ID]));
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NET_END_OBJECT_NESTED;
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return 0;
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}
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static int do_dump_one_act(struct nlattr *attr)
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{
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struct nlattr *tb[TCA_ACT_MAX + 1];
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if (!attr)
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return 0;
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if (libbpf_nla_parse_nested(tb, TCA_ACT_MAX, attr, NULL) < 0)
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return -LIBBPF_ERRNO__NLPARSE;
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if (tb[TCA_ACT_KIND] &&
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strcmp(libbpf_nla_data(tb[TCA_ACT_KIND]), "bpf") == 0)
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return do_bpf_dump_one_act(tb[TCA_ACT_OPTIONS]);
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return 0;
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}
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static int do_bpf_act_dump(struct nlattr *attr)
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{
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struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
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int act, ret;
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if (libbpf_nla_parse_nested(tb, TCA_ACT_MAX_PRIO, attr, NULL) < 0)
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return -LIBBPF_ERRNO__NLPARSE;
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NET_START_ARRAY("act", " %s [");
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for (act = 0; act <= TCA_ACT_MAX_PRIO; act++) {
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ret = do_dump_one_act(tb[act]);
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if (ret)
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break;
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}
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NET_END_ARRAY("] ");
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return ret;
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}
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static int do_bpf_filter_dump(struct nlattr *attr)
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{
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struct nlattr *tb[TCA_BPF_MAX + 1];
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int ret;
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if (libbpf_nla_parse_nested(tb, TCA_BPF_MAX, attr, NULL) < 0)
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return -LIBBPF_ERRNO__NLPARSE;
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if (tb[TCA_BPF_NAME])
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NET_DUMP_STR("name", " %s",
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libbpf_nla_getattr_str(tb[TCA_BPF_NAME]));
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if (tb[TCA_BPF_ID])
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NET_DUMP_UINT("id", " id %u",
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libbpf_nla_getattr_u32(tb[TCA_BPF_ID]));
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if (tb[TCA_BPF_ACT]) {
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ret = do_bpf_act_dump(tb[TCA_BPF_ACT]);
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if (ret)
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return ret;
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}
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return 0;
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}
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int do_filter_dump(struct tcmsg *info, struct nlattr **tb, const char *kind,
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const char *devname, int ifindex)
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{
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int ret = 0;
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if (tb[TCA_OPTIONS] &&
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strcmp(libbpf_nla_data(tb[TCA_KIND]), "bpf") == 0) {
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NET_START_OBJECT;
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if (devname[0] != '\0')
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NET_DUMP_STR("devname", "%s", devname);
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NET_DUMP_UINT("ifindex", "(%u)", ifindex);
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NET_DUMP_STR("kind", " %s", kind);
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ret = do_bpf_filter_dump(tb[TCA_OPTIONS]);
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NET_END_OBJECT_FINAL;
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}
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return ret;
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}
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