From: Jose Abreu <Jose.Abreu@synopsys.com>
To: netdev@vger.kernel.org
Cc: Joao Pinto <Joao.Pinto@synopsys.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net-next v3 8/8] net: stmmac: selftests: Add a test for TBS feature
Date: Mon, 13 Jan 2020 17:24:16 +0100 [thread overview]
Message-ID: <3d8d8526686356dec9ce72f81846d348b20136c2.1578932287.git.Jose.Abreu@synopsys.com> (raw)
In-Reply-To: <cover.1578932287.git.Jose.Abreu@synopsys.com>
In-Reply-To: <cover.1578932287.git.Jose.Abreu@synopsys.com>
Add a new test for TBS feature which is used in ETF scheduler. In this
test, we send a packet with a launch time specified as now + 500ms and
check if the packet was transmitted on that time frame.
Changes from v2:
- Use the TBS bitfield
- Remove debug message
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
.../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 71 ++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index d50ae59fe3d8..5a3aea628fc2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -14,6 +14,7 @@
#include <linux/phy.h>
#include <linux/udp.h>
#include <net/pkt_cls.h>
+#include <net/pkt_sched.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/tc_act/tc_gact.h>
@@ -50,6 +51,7 @@ struct stmmac_packet_attrs {
u8 id;
int sarc;
u16 queue_mapping;
+ u64 timestamp;
};
static u8 stmmac_test_next_id;
@@ -208,6 +210,9 @@ static struct sk_buff *stmmac_test_get_udp_skb(struct stmmac_priv *priv,
skb->pkt_type = PACKET_HOST;
skb->dev = priv->dev;
+ if (attr->timestamp)
+ skb->tstamp = ns_to_ktime(attr->timestamp);
+
return skb;
}
@@ -1723,6 +1728,68 @@ static int stmmac_test_sph(struct stmmac_priv *priv)
return 0;
}
+static int stmmac_test_tbs(struct stmmac_priv *priv)
+{
+#define STMMAC_TBS_LT_OFFSET (500 * 1000 * 1000) /* 500 ms*/
+ struct stmmac_packet_attrs attr = { };
+ struct tc_etf_qopt_offload qopt;
+ u64 start_time, curr_time = 0;
+ unsigned long flags;
+ int ret, i;
+
+ if (!priv->hwts_tx_en)
+ return -EOPNOTSUPP;
+
+ /* Find first TBS enabled Queue, if any */
+ for (i = 0; i < priv->plat->tx_queues_to_use; i++)
+ if (priv->tx_queue[i].tbs & STMMAC_TBS_AVAIL)
+ break;
+
+ if (i >= priv->plat->tx_queues_to_use)
+ return -EOPNOTSUPP;
+
+ qopt.enable = true;
+ qopt.queue = i;
+
+ ret = stmmac_tc_setup_etf(priv, priv, &qopt);
+ if (ret)
+ return ret;
+
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ stmmac_get_systime(priv, priv->ptpaddr, &curr_time);
+ spin_unlock_irqrestore(&priv->ptp_lock, flags);
+
+ if (!curr_time) {
+ ret = -EOPNOTSUPP;
+ goto fail_disable;
+ }
+
+ start_time = curr_time;
+ curr_time += STMMAC_TBS_LT_OFFSET;
+
+ attr.dst = priv->dev->dev_addr;
+ attr.timestamp = curr_time;
+ attr.timeout = nsecs_to_jiffies(2 * STMMAC_TBS_LT_OFFSET);
+ attr.queue_mapping = i;
+
+ ret = __stmmac_test_loopback(priv, &attr);
+ if (ret)
+ goto fail_disable;
+
+ /* Check if expected time has elapsed */
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ stmmac_get_systime(priv, priv->ptpaddr, &curr_time);
+ spin_unlock_irqrestore(&priv->ptp_lock, flags);
+
+ if ((curr_time - start_time) < STMMAC_TBS_LT_OFFSET)
+ ret = -EINVAL;
+
+fail_disable:
+ qopt.enable = false;
+ stmmac_tc_setup_etf(priv, priv, &qopt);
+ return ret;
+}
+
#define STMMAC_LOOPBACK_NONE 0
#define STMMAC_LOOPBACK_MAC 1
#define STMMAC_LOOPBACK_PHY 2
@@ -1856,6 +1923,10 @@ static const struct stmmac_test {
.name = "Split Header ",
.lb = STMMAC_LOOPBACK_PHY,
.fn = stmmac_test_sph,
+ }, {
+ .name = "TBS (ETF Scheduler) ",
+ .lb = STMMAC_LOOPBACK_PHY,
+ .fn = stmmac_test_tbs,
},
};
--
2.7.4
next prev parent reply other threads:[~2020-01-13 16:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 16:24 [PATCH net-next v3 0/8] net: stmmac: ETF support Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 1/8] net: stmmac: Initial support for TBS Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 2/8] net: stmmac: tc: Add support for ETF Scheduler using TBS Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 3/8] net: stmmac: xgmac: Add TBS support Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 4/8] net: stmmac: gmac4+: " Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 5/8] net: stmmac: pci: Enable TBS on GMAC5 IPK PCI entry Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 6/8] net: stmmac: Add missing information in DebugFS capabilities file Jose Abreu
2020-01-13 16:24 ` [PATCH net-next v3 7/8] net: stmmac: selftests: Switch to dev_direct_xmit() Jose Abreu
2020-01-13 16:24 ` Jose Abreu [this message]
2020-01-14 3:26 ` [PATCH net-next v3 0/8] net: stmmac: ETF support Jakub Kicinski
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=3d8d8526686356dec9ce72f81846d348b20136c2.1578932287.git.Jose.Abreu@synopsys.com \
--to=jose.abreu@synopsys.com \
--cc=Joao.Pinto@synopsys.com \
--cc=alexandre.torgue@st.com \
--cc=davem@davemloft.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=peppe.cavallaro@st.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;
as well as URLs for NNTP newsgroup(s).