OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

tools/bpf: Query XDP metadata BTF ID 

When dumping bpf net information, also query XDP MD BTF attributes:

$ /usr/local/sbin/bpftool net
xdp:
mlx0(3) md_btf_id(1) md_btf_enabled(0)

tc:

flow_dissector:

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Aravindhan Gunasekaran <aravindhan.gunasekaran@intel.com>
This commit is contained in:
Saeed Mahameed 2019-04-09 14:52:02 -07:00 committed by Aravindhan Gunasekaran
parent 31679da96f
commit ee9ddb03fb
2 changed files with 19 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
tools/bpf/bpftool/netlink_dumper.c
View File

@ -29,23 +29,36 @@ static void xdp_dump_prog_id(struct nlattr **tb, int attr,
static int do_xdp_dump_one(struct nlattr *attr, unsigned int ifindex,
const char *name)
{
unsigned char mode = XDP_ATTACHED_NONE;
struct nlattr *tb[IFLA_XDP_MAX + 1];
unsigned char mode;
unsigned char md_btf_enabled = 0;
unsigned int md_btf_id = 0;
bool attached;
if (libbpf_nla_parse_nested(tb, IFLA_XDP_MAX, attr, NULL) < 0)
return -1;
if (!tb[IFLA_XDP_ATTACHED])
if (!tb[IFLA_XDP_ATTACHED] && !tb[IFLA_XDP_MD_BTF_ID])
return 0;
mode = libbpf_nla_getattr_u8(tb[IFLA_XDP_ATTACHED]);
if (mode == XDP_ATTACHED_NONE)
if (tb[IFLA_XDP_ATTACHED])
mode = libbpf_nla_getattr_u8(tb[IFLA_XDP_ATTACHED]);
if (tb[IFLA_XDP_MD_BTF_ID]) {
md_btf_id = libbpf_nla_getattr_u32(tb[IFLA_XDP_MD_BTF_ID]);
md_btf_enabled = libbpf_nla_getattr_u8(tb[IFLA_XDP_MD_BTF_STATE]);
}
attached = (mode != XDP_ATTACHED_NONE);
if (!attached && !md_btf_id)
return 0;
NET_START_OBJECT;
if (name)
NET_DUMP_STR("devname", "%s", name);
NET_DUMP_UINT("ifindex", "(%d)", ifindex);
NET_DUMP_UINT("md_btf_id", " md_btf_id(%d)", md_btf_id);
NET_DUMP_UINT("md_btf_enabled", " md_btf_enabled(%d)", md_btf_enabled);
if (mode == XDP_ATTACHED_MULTI) {
if (json_output) {

2
tools/include/uapi/linux/if_link.h
View File

@ -1213,6 +1213,8 @@ enum {
IFLA_XDP_SKB_PROG_ID,
IFLA_XDP_HW_PROG_ID,
IFLA_XDP_EXPECTED_FD,
IFLA_XDP_MD_BTF_ID,
IFLA_XDP_MD_BTF_STATE,
__IFLA_XDP_MAX,
};