netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Luca Boccassi <bluca@debian.org>
To: netdev@vger.kernel.org
Cc: stephen@networkplumber.org
Subject: [PATCH iproute2 1/2] vrf: print BPF log buffer if bpf_program_load fails
Date: Sun, 17 Jan 2021 22:54:26 +0000	[thread overview]
Message-ID: <20210117225427.29658-1-bluca@debian.org> (raw)

Necessary to understand what is going on when bpf_program_load fails

Signed-off-by: Luca Boccassi <bluca@debian.org>
---
 ip/ipvrf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ip/ipvrf.c b/ip/ipvrf.c
index 42779e5c..91578031 100644
--- a/ip/ipvrf.c
+++ b/ip/ipvrf.c
@@ -278,8 +278,8 @@ static int vrf_configure_cgroup(const char *path, int ifindex)
 	 */
 	prog_fd = prog_load(ifindex);
 	if (prog_fd < 0) {
-		fprintf(stderr, "Failed to load BPF prog: '%s'\n",
-			strerror(errno));
+		fprintf(stderr, "Failed to load BPF prog: '%s'\n%s",
+			strerror(errno), bpf_log_buf);
 
 		if (errno != EPERM) {
 			fprintf(stderr,
-- 
2.29.2


             reply	other threads:[~2021-01-17 22:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-17 22:54 Luca Boccassi [this message]
2021-01-17 22:54 ` [PATCH iproute2 2/2] vrf: fix ip vrf exec with libbpf Luca Boccassi
2021-01-18  3:53   ` David Ahern
2021-01-18  3:53 ` [PATCH iproute2 1/2] vrf: print BPF log buffer if bpf_program_load fails David Ahern

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=20210117225427.29658-1-bluca@debian.org \
    --to=bluca@debian.org \
    --cc=netdev@vger.kernel.org \
    --cc=stephen@networkplumber.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 NNTP newsgroup(s).