| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20260107125111.2372254-3-m-malladi@ti.com>
Date: Wed, 7 Jan 2026 18:21:11 +0530
From: Meghana Malladi <m-malladi@...com>
To: <vadim.fedorenko@...ux.dev>, <horms@...nel.org>,
<jacob.e.keller@...el.com>, <afd@...com>, <pmohan@...thit.com>,
<m-malladi@...com>, <basharath@...thit.com>, <vladimir.oltean@....com>,
<rogerq@...nel.org>, <danishanwar@...com>, <pabeni@...hat.com>,
<kuba@...nel.org>, <edumazet@...gle.com>, <davem@...emloft.net>,
<andrew+netdev@...n.ch>
CC: <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <srk@...com>, Vignesh Raghavendra
<vigneshr@...com>
Subject: [PATCH net-next 2/2] net: ti: icssg-prueth: Add ethtool ops for Frame Preemption MAC Merge
Add ethtool ops .get_mm, .set_mm and .get_mm_stats to enable / disable
Mac merge frame preemption and dump Preemption related statistics for
ICSSG driver. Add pa stats registers for mac merge related statistics,
which can be dumped using the ethtool ops.
Signed-off-by: MD Danish Anwar <danishanwar@...com>
Signed-off-by: Meghana Malladi <m-malladi@...com>
---
drivers/net/ethernet/ti/icssg/icssg_ethtool.c | 58 +++++++++++++++++++
drivers/net/ethernet/ti/icssg/icssg_prueth.h | 2 +-
drivers/net/ethernet/ti/icssg/icssg_stats.h | 5 ++
.../net/ethernet/ti/icssg/icssg_switch_map.h | 5 ++
4 files changed, 69 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
index b715af21d23a..ceca6d6ec0f4 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
@@ -294,6 +294,61 @@ static int emac_set_per_queue_coalesce(struct net_device *ndev, u32 queue,
return 0;
}
+static int emac_get_mm(struct net_device *ndev, struct ethtool_mm_state *state)
+{
+ struct prueth_emac *emac = netdev_priv(ndev);
+ struct prueth_qos_iet *iet = &emac->qos.iet;
+ void __iomem *config;
+
+ config = emac->dram.va + ICSSG_CONFIG_OFFSET;
+
+ state->tx_enabled = iet->fpe_enabled;
+ state->pmac_enabled = true;
+ state->verify_status = readb(config + PRE_EMPTION_VERIFY_STATUS);
+ state->tx_min_frag_size = iet->tx_min_frag_size;
+ state->rx_min_frag_size = 124;
+ state->tx_active = readb(config + PRE_EMPTION_ACTIVE_TX) ? true : false;
+ state->verify_enabled = readb(config + PRE_EMPTION_ENABLE_VERIFY) ? true : false;
+ state->verify_time = iet->verify_time_ms;
+
+ /* 802.3-2018 clause 30.14.1.6, says that the aMACMergeVerifyTime
+ * variable has a range between 1 and 128 ms inclusive. Limit to that.
+ */
+ state->max_verify_time = 128;
+
+ return 0;
+}
+
+static int emac_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg,
+ struct netlink_ext_ack *extack)
+{
+ struct prueth_emac *emac = netdev_priv(ndev);
+ struct prueth_qos_iet *iet = &emac->qos.iet;
+
+ if (!cfg->pmac_enabled)
+ netdev_err(ndev, "preemptible MAC is always enabled");
+
+ iet->verify_time_ms = cfg->verify_time;
+ iet->tx_min_frag_size = cfg->tx_min_frag_size;
+
+ iet->fpe_configured = cfg->tx_enabled;
+ iet->mac_verify_configured = cfg->verify_enabled;
+
+ return 0;
+}
+
+static void emac_get_mm_stats(struct net_device *ndev,
+ struct ethtool_mm_stats *s)
+{
+ struct prueth_emac *emac = netdev_priv(ndev);
+
+ s->MACMergeFrameAssOkCount = emac_get_stat_by_name(emac, "FW_PREEMPT_ASSEMBLY_OK");
+ s->MACMergeFrameAssErrorCount = emac_get_stat_by_name(emac, "FW_PREEMPT_ASSEMBLY_ERR");
+ s->MACMergeFragCountRx = emac_get_stat_by_name(emac, "FW_PREEMPT_FRAG_CNT_RX");
+ s->MACMergeFragCountTx = emac_get_stat_by_name(emac, "FW_PREEMPT_FRAG_CNT_TX");
+ s->MACMergeFrameSmdErrorCount = emac_get_stat_by_name(emac, "FW_PREEMPT_BAD_FRAG");
+}
+
const struct ethtool_ops icssg_ethtool_ops = {
.get_drvinfo = emac_get_drvinfo,
.get_msglevel = emac_get_msglevel,
@@ -317,5 +372,8 @@ const struct ethtool_ops icssg_ethtool_ops = {
.set_eee = emac_set_eee,
.nway_reset = emac_nway_reset,
.get_rmon_stats = emac_get_rmon_stats,
+ .get_mm = emac_get_mm,
+ .set_mm = emac_set_mm,
+ .get_mm_stats = emac_get_mm_stats,
};
EXPORT_SYMBOL_GPL(icssg_ethtool_ops);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index 7a586038adf8..9c31574cc7f6 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -58,7 +58,7 @@
#define ICSSG_MAX_RFLOWS 8 /* per slice */
-#define ICSSG_NUM_PA_STATS 32
+#define ICSSG_NUM_PA_STATS 37
#define ICSSG_NUM_MIIG_STATS 60
/* Number of ICSSG related stats */
#define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.h b/drivers/net/ethernet/ti/icssg/icssg_stats.h
index 5ec0b38e0c67..f35ae1b4f846 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_stats.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_stats.h
@@ -189,6 +189,11 @@ static const struct icssg_pa_stats icssg_all_pa_stats[] = {
ICSSG_PA_STATS(FW_INF_DROP_PRIOTAGGED),
ICSSG_PA_STATS(FW_INF_DROP_NOTAG),
ICSSG_PA_STATS(FW_INF_DROP_NOTMEMBER),
+ ICSSG_PA_STATS(FW_PREEMPT_BAD_FRAG),
+ ICSSG_PA_STATS(FW_PREEMPT_ASSEMBLY_ERR),
+ ICSSG_PA_STATS(FW_PREEMPT_FRAG_CNT_TX),
+ ICSSG_PA_STATS(FW_PREEMPT_ASSEMBLY_OK),
+ ICSSG_PA_STATS(FW_PREEMPT_FRAG_CNT_RX),
ICSSG_PA_STATS(FW_RX_EOF_SHORT_FRMERR),
ICSSG_PA_STATS(FW_RX_B0_DROP_EARLY_EOF),
ICSSG_PA_STATS(FW_TX_JUMBO_FRM_CUTOFF),
diff --git a/drivers/net/ethernet/ti/icssg/icssg_switch_map.h b/drivers/net/ethernet/ti/icssg/icssg_switch_map.h
index 7e053b8af3ec..855fd4ed0b3f 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_switch_map.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_switch_map.h
@@ -256,6 +256,11 @@
#define FW_INF_DROP_PRIOTAGGED 0x0148
#define FW_INF_DROP_NOTAG 0x0150
#define FW_INF_DROP_NOTMEMBER 0x0158
+#define FW_PREEMPT_BAD_FRAG 0x0160
+#define FW_PREEMPT_ASSEMBLY_ERR 0x0168
+#define FW_PREEMPT_FRAG_CNT_TX 0x0170
+#define FW_PREEMPT_ASSEMBLY_OK 0x0178
+#define FW_PREEMPT_FRAG_CNT_RX 0x0180
#define FW_RX_EOF_SHORT_FRMERR 0x0188
#define FW_RX_B0_DROP_EARLY_EOF 0x0190
#define FW_TX_JUMBO_FRM_CUTOFF 0x0198
--
2.43.0
Powered by blists - more mailing lists