From: Song Yoong Siang <yoong.siang.song@intel.com>
To: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>,
Willem de Bruijn <willemb@google.com>,
Florian Bezdeka <florian.bezdeka@siemens.com>,
Donald Hunter <donald.hunter@gmail.com>,
Jonathan Corbet <corbet@lwn.net>, Bjorn Topel <bjorn@kernel.org>,
Magnus Karlsson <magnus.karlsson@intel.com>,
Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
Jonathan Lemon <jonathan.lemon@gmail.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Joe Damato <jdamato@fastly.com>,
Stanislav Fomichev <sdf@fomichev.me>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
Mina Almasry <almasrymina@google.com>,
Daniel Jurgens <danielj@nvidia.com>,
Song Yoong Siang <yoong.siang.song@intel.com>,
Andrii Nakryiko <andrii@kernel.org>,
Eduard Zingerman <eddyz87@gmail.com>,
Mykola Lysenko <mykolal@fb.com>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
KP Singh <kpsingh@kernel.org>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>, Shuah Khan <shuah@kernel.org>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Jose Abreu <joabreu@synopsys.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, bpf@vger.kernel.org,
linux-kselftest@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
intel-wired-lan@lists.osuosl.org, xdp-hints@xdp-project.net
Subject: [xdp-hints] [PATCH bpf-next v6 3/4] net: stmmac: Add launch time support to XDP ZC
Date: Thu, 16 Jan 2025 23:53:49 +0800 [thread overview]
Message-ID: <20250116155350.555374-4-yoong.siang.song@intel.com> (raw)
In-Reply-To: <20250116155350.555374-1-yoong.siang.song@intel.com>
Enable launch time (Time-Based Scheduling) support to XDP zero copy via XDP
Tx metadata framework.
This patch is tested with tools/testing/selftests/bpf/xdp_hw_metadata on
Intel Tiger Lake platform. Below are the test steps and result.
Test Steps:
1. At DUT, start xdp_hw_metadata selftest application:
$ sudo ./xdp_hw_metadata enp0s30f4 -l 1000000000 -L 1
2. At Link Partner, send an UDP packet with VLAN priority 1 to port 9091 of
DUT.
When launch time is set to 1s in the future, the delta between launch time
and transmit hardware timestamp is equal to 16.963us, as shown in result
below:
0x55b5864717a8: rx_desc[4]->addr=88100 addr=88100 comp_addr=88100 EoP
No rx_hash, err=-95
HW RX-time: 1734579065767717328 (sec:1734579065.7677) delta to User RX-time sec:0.0004 (375.624 usec)
XDP RX-time: 1734579065768004454 (sec:1734579065.7680) delta to User RX-time sec:0.0001 (88.498 usec)
No rx_vlan_tci or rx_vlan_proto, err=-95
0x55b5864717a8: ping-pong with csum=5619 (want 0000) csum_start=34 csum_offset=6
HW RX-time: 1734579065767717328 (sec:1734579065.7677) delta to HW Launch-time sec:1.0000 (1000000.000 usec)
0x55b5864717a8: complete tx idx=4 addr=4018
HW Launch-time: 1734579066767717328 (sec:1734579066.7677) delta to HW TX-complete-time sec:0.0000 (16.963 usec)
HW TX-complete-time: 1734579066767734291 (sec:1734579066.7677) delta to User TX-complete-time sec:0.0001 (130.408 usec)
XDP RX-time: 1734579065768004454 (sec:1734579065.7680) delta to User TX-complete-time sec:0.9999 (999860.245 usec)
HW RX-time: 1734579065767717328 (sec:1734579065.7677) delta to HW TX-complete-time sec:1.0000 (1000016.963 usec)
0x55b5864717a8: complete rx idx=132 addr=88100
Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 ++
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 1d86439b8a14..c80462d42989 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -106,6 +106,8 @@ struct stmmac_metadata_request {
struct stmmac_priv *priv;
struct dma_desc *tx_desc;
bool *set_ic;
+ struct dma_edesc *edesc;
+ int tbs;
};
struct stmmac_xsk_tx_complete {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c81ea8cdfe6e..3a083e3684ed 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2445,9 +2445,20 @@ static u64 stmmac_xsk_fill_timestamp(void *_priv)
return 0;
}
+static void stmmac_xsk_request_launch_time(u64 launch_time, void *_priv)
+{
+ struct stmmac_metadata_request *meta_req = _priv;
+ struct timespec64 ts = ns_to_timespec64(launch_time);
+
+ if (meta_req->tbs & STMMAC_TBS_EN)
+ stmmac_set_desc_tbs(meta_req->priv, meta_req->edesc, ts.tv_sec,
+ ts.tv_nsec);
+}
+
static const struct xsk_tx_metadata_ops stmmac_xsk_tx_metadata_ops = {
.tmo_request_timestamp = stmmac_xsk_request_timestamp,
.tmo_fill_timestamp = stmmac_xsk_fill_timestamp,
+ .tmo_request_launch_time = stmmac_xsk_request_launch_time,
};
static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
@@ -2531,6 +2542,8 @@ static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
meta_req.priv = priv;
meta_req.tx_desc = tx_desc;
meta_req.set_ic = &set_ic;
+ meta_req.tbs = tx_q->tbs;
+ meta_req.edesc = &tx_q->dma_entx[entry];
xsk_tx_metadata_request(meta, &stmmac_xsk_tx_metadata_ops,
&meta_req);
if (set_ic) {
--
2.34.1
next prev parent reply other threads:[~2025-01-16 15:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-16 15:53 [xdp-hints] [PATCH bpf-next v6 0/4] xsk: TX metadata Launch Time support Song Yoong Siang
2025-01-16 15:53 ` [xdp-hints] [PATCH bpf-next v6 1/4] xsk: Add launch time hardware offload support to XDP Tx metadata Song Yoong Siang
2025-01-16 15:53 ` [xdp-hints] [PATCH bpf-next v6 2/4] selftests/bpf: Add launch time request to xdp_hw_metadata Song Yoong Siang
2025-01-16 15:53 ` Song Yoong Siang [this message]
2025-01-16 15:53 ` [xdp-hints] [PATCH bpf-next v6 4/4] igc: Add launch time support to XDP ZC Song Yoong Siang
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=20250116155350.555374-4-yoong.siang.song@intel.com \
--to=yoong.siang.song@intel.com \
--cc=alexandre.torgue@foss.st.com \
--cc=almasrymina@google.com \
--cc=andrew+netdev@lunn.ch \
--cc=andrii@kernel.org \
--cc=anthony.l.nguyen@intel.com \
--cc=ast@kernel.org \
--cc=bjorn@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=corbet@lwn.net \
--cc=daniel@iogearbox.net \
--cc=danielj@nvidia.com \
--cc=davem@davemloft.net \
--cc=donald.hunter@gmail.com \
--cc=eddyz87@gmail.com \
--cc=edumazet@google.com \
--cc=florian.bezdeka@siemens.com \
--cc=haoluo@google.com \
--cc=hawk@kernel.org \
--cc=horms@kernel.org \
--cc=intel-wired-lan@lists.osuosl.org \
--cc=jdamato@fastly.com \
--cc=joabreu@synopsys.com \
--cc=john.fastabend@gmail.com \
--cc=jolsa@kernel.org \
--cc=jonathan.lemon@gmail.com \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=maciej.fijalkowski@intel.com \
--cc=magnus.karlsson@intel.com \
--cc=martin.lau@linux.dev \
--cc=mcoquelin.stm32@gmail.com \
--cc=mykolal@fb.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=przemyslaw.kitszel@intel.com \
--cc=sdf@fomichev.me \
--cc=shuah@kernel.org \
--cc=song@kernel.org \
--cc=willemb@google.com \
--cc=xdp-hints@xdp-project.net \
--cc=xuanzhuo@linux.alibaba.com \
--cc=yonghong.song@linux.dev \
/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