XDP hardware hints discussion mail archive
 help / color / mirror / Atom feed
From: Jesper Dangaard Brouer <brouer@redhat.com>
To: bpf@vger.kernel.org, "Stanislav Fomichev" <sdf@google.com>,
	"Toke Høiland-Jørgensen" <toke@redhat.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net,
	alexandr.lobakin@intel.com, larysa.zaremba@intel.com,
	xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com,
	yoong.siang.song@intel.com, boon.leong.ong@intel.com,
	intel-wired-lan@lists.osuosl.org, pabeni@redhat.com,
	jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com,
	john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net,
	tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org,
	linux-rdma@vger.kernel.org
Subject: [xdp-hints] [PATCH bpf V8 2/7] selftests/bpf: Add counters to xdp_hw_metadata
Date: Wed, 12 Apr 2023 14:42:47 +0200	[thread overview]
Message-ID: <168130336725.150247.12193228778654006957.stgit@firesoul> (raw)
In-Reply-To: <168130333143.150247.11159481574477358816.stgit@firesoul>

Add counters for skipped, failed and redirected packets.
The xdp_hw_metadata program only redirects UDP port 9091.
This helps users to quickly identify then packets are
skipped and identify failures of bpf_xdp_adjust_meta.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
---
 .../testing/selftests/bpf/progs/xdp_hw_metadata.c  |   15 +++++++++++++--
 tools/testing/selftests/bpf/xdp_hw_metadata.c      |    4 +++-
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c
index b0104763405a..a07ef7534013 100644
--- a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c
+++ b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c
@@ -25,6 +25,10 @@ struct {
 	__type(value, __u32);
 } xsk SEC(".maps");
 
+volatile __u64 pkts_skip = 0;
+volatile __u64 pkts_fail = 0;
+volatile __u64 pkts_redir = 0;
+
 extern int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx,
 					 __u64 *timestamp) __ksym;
 extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx,
@@ -59,16 +63,21 @@ int rx(struct xdp_md *ctx)
 			udp = NULL;
 	}
 
-	if (!udp)
+	if (!udp) {
+		pkts_skip++;
 		return XDP_PASS;
+	}
 
 	/* Forwarding UDP:9091 to AF_XDP */
-	if (udp->dest != bpf_htons(9091))
+	if (udp->dest != bpf_htons(9091)) {
+		pkts_skip++;
 		return XDP_PASS;
+	}
 
 	ret = bpf_xdp_adjust_meta(ctx, -(int)sizeof(struct xdp_meta));
 	if (ret != 0) {
 		bpf_printk("bpf_xdp_adjust_meta returned %d", ret);
+		pkts_fail++;
 		return XDP_PASS;
 	}
 
@@ -78,6 +87,7 @@ int rx(struct xdp_md *ctx)
 
 	if (meta + 1 > data) {
 		bpf_printk("bpf_xdp_adjust_meta doesn't appear to work");
+		pkts_fail++;
 		return XDP_PASS;
 	}
 
@@ -91,6 +101,7 @@ int rx(struct xdp_md *ctx)
 	else
 		meta->rx_hash = 0; /* Used by AF_XDP as not avail signal */
 
+	pkts_redir++;
 	return bpf_redirect_map(&xsk, ctx->rx_queue_index, XDP_PASS);
 }
 
diff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c b/tools/testing/selftests/bpf/xdp_hw_metadata.c
index 1c8acb68b977..3b942ef7297b 100644
--- a/tools/testing/selftests/bpf/xdp_hw_metadata.c
+++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c
@@ -212,7 +212,9 @@ static int verify_metadata(struct xsk *rx_xsk, int rxq, int server_fd)
 	while (true) {
 		errno = 0;
 		ret = poll(fds, rxq + 1, 1000);
-		printf("poll: %d (%d)\n", ret, errno);
+		printf("poll: %d (%d) skip=%llu fail=%llu redir=%llu\n",
+		       ret, errno, bpf_obj->bss->pkts_skip,
+		       bpf_obj->bss->pkts_fail, bpf_obj->bss->pkts_redir);
 		if (ret < 0)
 			break;
 		if (ret == 0)



  parent reply	other threads:[~2023-04-12 12:42 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-12 12:42 [xdp-hints] [PATCH bpf V8 0/7] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx_hash Jesper Dangaard Brouer
2023-04-12 12:42 ` [xdp-hints] [PATCH bpf V8 1/7] selftests/bpf: xdp_hw_metadata default disable bpf_printk Jesper Dangaard Brouer
2023-04-12 12:42 ` Jesper Dangaard Brouer [this message]
2023-04-12 16:56   ` [xdp-hints] Re: [PATCH bpf V8 2/7] selftests/bpf: Add counters to xdp_hw_metadata Stanislav Fomichev
2023-04-12 17:52     ` Jesper Dangaard Brouer
2023-04-12 17:56       ` Stanislav Fomichev
2023-04-12 12:42 ` [xdp-hints] [PATCH bpf V8 3/7] xdp: rss hash types representation Jesper Dangaard Brouer
2023-04-12 12:42 ` [xdp-hints] [PATCH bpf V8 4/7] mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type Jesper Dangaard Brouer
2023-04-12 12:43 ` [xdp-hints] [PATCH bpf V8 5/7] veth: " Jesper Dangaard Brouer
2023-04-12 12:43 ` [xdp-hints] [PATCH bpf V8 6/7] mlx4: " Jesper Dangaard Brouer
2023-04-12 12:43 ` [xdp-hints] [PATCH bpf V8 7/7] selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg 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

  List information: https://lists.xdp-project.net/postorius/lists/xdp-hints.xdp-project.net/

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

  git send-email \
    --in-reply-to=168130336725.150247.12193228778654006957.stgit@firesoul \
    --to=brouer@redhat.com \
    --cc=alexandr.lobakin@intel.com \
    --cc=anthony.l.nguyen@intel.com \
    --cc=ast@kernel.org \
    --cc=boon.leong.ong@intel.com \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=hawk@kernel.org \
    --cc=intel-wired-lan@lists.osuosl.org \
    --cc=jesse.brandeburg@intel.com \
    --cc=john.fastabend@gmail.com \
    --cc=kuba@kernel.org \
    --cc=larysa.zaremba@intel.com \
    --cc=leon@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=martin.lau@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=saeedm@nvidia.com \
    --cc=sdf@google.com \
    --cc=tariqt@nvidia.com \
    --cc=toke@redhat.com \
    --cc=xdp-hints@xdp-project.net \
    --cc=yoong.siang.song@intel.com \
    /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