XDP-Newbies Archive mirror
 help / color / mirror / Atom feed
From: "Ethy H. Brito" <ethy.brito@inexo.com.br>
To: "xdp-newbies@vger.kernel.org" <xdp-newbies@vger.kernel.org>
Subject: xdp_iphash_to_cpu_cmdline: Error loading BTF: Invalid argument(22)
Date: Tue, 22 Jun 2021 17:22:16 -0300	[thread overview]
Message-ID: <20210622172216.79c6b3f2@babalu> (raw)


Hi

Runing "# ./xdp_iphash_to_cpu --dev eth1 --all-cpus --wan" returns 2 loading errors:

----------------------8<----------------------------------
libbpf: Error loading BTF: Invalid argument(22)
libbpf: magic: 0xeb9f
version: 1
flags: 0x0
hdr_len: 24
type_off: 0
type_len: 492
str_off: 492
str_len: 1724
btf_total_size: 2240
[1] PTR (anon) type_id=2
[2] STRUCT xdp_md size=20 vlen=5
	data type_id=3 bits_offset=0
	data_end type_id=3 bits_offset=32
	data_meta type_id=3 bits_offset=64
	ingress_ifindex type_id=3 bits_offset=96
	rx_queue_index type_id=3 bits_offset=128
[3] TYPEDEF __u32 type_id=4
[4] INT unsigned int size=4 bits_offset=0 nr_bits=32 encoding=(none)
[5] FUNC_PROTO (anon) return=6 args=(1 ctx)
[6] INT int size=4 bits_offset=0 nr_bits=32 encoding=SIGNED
[7] FUNC xdp_program type_id=5 vlen != 0

libbpf: Error loading ELF section .BTF: -22. Ignored and continue.
TC workaround for mapname: map_ifindex_type map_fd:5
Added CPU:0 queue_size:192
Added CPU:1 queue_size:192
Added CPU:2 queue_size:192
Added CPU:3 queue_size:192
Added CPU:4 queue_size:192
Added CPU:5 queue_size:192
Added CPU:6 queue_size:192
Added CPU:7 queue_size:192
Added CPU:8 queue_size:192
Added CPU:9 queue_size:192
Added CPU:10 queue_size:192
Added CPU:11 queue_size:192
Added CPU:12 queue_size:192
Added CPU:13 queue_size:192
Added CPU:14 queue_size:192
Added CPU:15 queue_size:192
Documentation:
 XDP: Lookup IPv4 and redirect to CPU hash

This program loads the XDP eBPF program into the kernel.
Use the cmdline tool for add/removing dest IPs to the hash

 - Attached to device:eth1 (ifindex:4) prog_id:73
----------------------------------8<-------------------------------

Since the XDP program was correctly listed by "bpftool net", I continued an added just ONE ip

# ./xdp_iphash_to_cpu_cmdline --add --ip 1.2.3.4 --classid 1:1234 --cpu 1
key: 0x4030201
WARN: Looks like map_txq_config --base-setup is missing
WARN: Fixing, doing map_txq_config --base-setup
iphash_modify() IP:1.2.3.4 key:0x4030201 TC-handle:0x11234

listed the map

# ./xdp_iphash_to_cpu_cmdline --list
{
"1.2.3.4" : { "cpu" : 1, "tc_maj" : "1" , "tc_min" : "1234" }}


And right after I tried to remove the program from XDP:

# ./xdp_iphash_to_cpu --dev eth1 --remove
Removing XDP program on ifindex:4 device:eth1
ERR: Clear ifindex type failed 
INFO: not cleanup pinned map file:/sys/fs/bpf/tc/globals/map_ip_hash (use 'rm')

All seems to be rigth despite the errors.
Are all these errors and warnings serious problems? Should I worry? 

Hints??

Regards

Ethy

             reply	other threads:[~2021-06-22 20:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-22 20:22 Ethy H. Brito [this message]
2021-06-24 20:04 ` xdp_iphash_to_cpu_cmdline: Error loading BTF: Invalid argument(22) Ethy H. Brito
2021-06-24 20:16   ` Jesper Dangaard Brouer
2021-06-24 20:44     ` Ethy H. Brito
2021-06-25  1:14       ` Y Song
2021-06-25  8:43         ` Jesper Dangaard Brouer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210622172216.79c6b3f2@babalu \
    --to=ethy.brito@inexo.com.br \
    --cc=xdp-newbies@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).