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The ICSSG firmware maintains set of stats called PA_STATS. Currently the driver only dumps 4 stats. Add support for dumping more stats. The offset for different stats are defined as MACROs in icssg_switch_map.h file. All the offsets are for Slice0. Slice1 offsets are slice0 + 4. The offset calculation is taken care while reading the stats in emac_update_hardware_stats(). The statistics are documented in Documentation/networking/device_drivers/icssg_prueth.rst Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: MD Danish Anwar <danishanwar@ti.com> Link: https://patch.msgid.link/20250424095316.2643573-1-danishanwar@ti.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
57 lines
3.3 KiB
ReStructuredText
57 lines
3.3 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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==============================================
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Texas Instruments ICSSG PRUETH ethernet driver
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==============================================
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:Version: 1.0
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ICSSG Firmware
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==============
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Every ICSSG core has two Programmable Real-Time Unit(PRUs), two auxiliary
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Real-Time Transfer Unit (RTUs), and two Transmit Real-Time Transfer Units
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(TX_PRUs). Each one of these runs its own firmware. The firmwares combnined are
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referred as ICSSG Firmware.
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Firmware Statistics
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===================
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The ICSSG firmware maintains certain statistics which are dumped by the driver
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via ``ethtool -S <interface>``
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These statistics are as follows,
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- ``FW_RTU_PKT_DROP``: Diagnostic error counter which increments when RTU drops a locally injected packet due to port being disabled or rule violation.
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- ``FW_Q0_OVERFLOW``: TX overflow counter for queue0
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- ``FW_Q1_OVERFLOW``: TX overflow counter for queue1
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- ``FW_Q2_OVERFLOW``: TX overflow counter for queue2
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- ``FW_Q3_OVERFLOW``: TX overflow counter for queue3
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- ``FW_Q4_OVERFLOW``: TX overflow counter for queue4
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- ``FW_Q5_OVERFLOW``: TX overflow counter for queue5
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- ``FW_Q6_OVERFLOW``: TX overflow counter for queue6
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- ``FW_Q7_OVERFLOW``: TX overflow counter for queue7
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- ``FW_DROPPED_PKT``: This counter is incremented when a packet is dropped at PRU because of rule violation.
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- ``FW_RX_ERROR``: Incremented if there was a CRC error or Min/Max frame error at PRU
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- ``FW_RX_DS_INVALID``: Incremented when RTU detects Data Status invalid condition
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- ``FW_TX_DROPPED_PACKET``: Counter for packets dropped via TX Port
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- ``FW_TX_TS_DROPPED_PACKET``: Counter for packets with TS flag dropped via TX Port
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- ``FW_INF_PORT_DISABLED``: Incremented when RX frame is dropped due to port being disabled
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- ``FW_INF_SAV``: Incremented when RX frame is dropped due to Source Address violation
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- ``FW_INF_SA_DL``: Incremented when RX frame is dropped due to Source Address being in the denylist
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- ``FW_INF_PORT_BLOCKED``: Incremented when RX frame is dropped due to port being blocked and frame being a special frame
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- ``FW_INF_DROP_TAGGED`` : Incremented when RX frame is dropped for being tagged
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- ``FW_INF_DROP_PRIOTAGGED``: Incremented when RX frame is dropped for being priority tagged
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- ``FW_INF_DROP_NOTAG``: Incremented when RX frame is dropped for being untagged
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- ``FW_INF_DROP_NOTMEMBER``: Incremented when RX frame is dropped for port not being member of VLAN
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- ``FW_RX_EOF_SHORT_FRMERR``: Incremented if End Of Frame (EOF) task is scheduled without seeing RX_B1
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- ``FW_RX_B0_DROP_EARLY_EOF``: Incremented when frame is dropped due to Early EOF
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- ``FW_TX_JUMBO_FRM_CUTOFF``: Incremented when frame is cut off to prevent packet size > 2000 Bytes
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- ``FW_RX_EXP_FRAG_Q_DROP``: Incremented when express frame is received in the same queue as the previous fragment
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- ``FW_RX_FIFO_OVERRUN``: RX fifo overrun counter
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- ``FW_CUT_THR_PKT``: Incremented when a packet is forwarded using Cut-Through forwarding method
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- ``FW_HOST_RX_PKT_CNT``: Number of valid packets sent by Rx PRU to Host on PSI
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- ``FW_HOST_TX_PKT_CNT``: Number of valid packets copied by RTU0 to Tx queues
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- ``FW_HOST_EGRESS_Q_PRE_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter
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- ``FW_HOST_EGRESS_Q_EXP_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter
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