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bianbu-linux-6.6/drivers/net/ethernet/intel/ice
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Jacob Keller 0ec38df36e ice: do not re-enable miscellaneous interrupt until thread_fn completes 
The ice driver uses threaded IRQ for managing Tx timestamps via the
devm_request_threaded_irq() interface. The ice_misc_intr() handler function
is responsible for processing the hard interrupt context, and can wake the
ice_misc_intr_thread_fn() by returning IRQ_WAKE_THREAD.

The request_threaded_irq() function comment says:

  @handler is still called in hard interrupt context and has to check
  whether the interrupt originates from the device. If yes, it needs to
  disable the interrupt on the device and return IRQ_WAKE_THREAD which will
  wake up the handler thread and run the @thread_fn.

We currently re-enable the Other Interrupt Cause Register (OCIR) at the end of
ice_misc_intr(). In practice, this seems to be ok, but it can make
communicating between the handler function and the thread function
difficult. This is because the interrupt can trigger again while the thread
function is still processing.

Move the OICR update to the end of the thread function, leaving the other
interrupt cause disabled in hardware until we complete one pass of the
thread function. This prevents the miscellaneous interrupt from firing
until after we finish the thread function.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-06-08 13:03:31 -07:00
..
ice.h ice: handle extts in the miscellaneous interrupt thread 2023-06-08 10:06:40 -07:00
ice_adminq_cmd.h ice: update ICE_PHY_TYPE_HIGH_MAX_INDEX 2023-05-17 08:38:22 -07:00
ice_arfs.c ice: add individual interrupt allocation 2023-05-16 09:38:38 -07:00
ice_arfs.h
ice_base.c ice: add dynamic interrupt allocation 2023-05-16 09:38:38 -07:00
ice_base.h
ice_cgu_regs.h
ice_common.c ice: sleep, don't busy-wait, in the SQ send retry loop 2023-04-20 16:33:14 -07:00
ice_common.h ice: Add GPIO pin support for E823 products 2023-02-14 13:08:02 -08:00
ice_controlq.c ice: sleep, don't busy-wait, for ICE_CTL_Q_SQ_CMD_TIMEOUT 2023-04-20 16:33:14 -07:00
ice_controlq.h ice: sleep, don't busy-wait, for ICE_CTL_Q_SQ_CMD_TIMEOUT 2023-04-20 16:33:14 -07:00
ice_dcb.c ice: Fix DSCP PFC TLV creation 2023-03-07 13:02:01 -08:00
ice_dcb.h ice: Handle LLDP MIB Pending change 2023-01-19 08:18:03 -08:00
ice_dcb_lib.c ice: Fix undersized tx_flags variable 2023-05-12 09:27:44 +01:00
ice_dcb_lib.h ice: Prevent set_channel from changing queues while RDMA active 2023-01-27 11:32:18 -08:00
ice_dcb_nl.c
ice_dcb_nl.h
ice_ddp.c ice: Move support DDP code out of ice_flex_pipe.c 2023-01-19 08:18:03 -08:00
ice_ddp.h ice: Move support DDP code out of ice_flex_pipe.c 2023-01-19 08:18:03 -08:00
ice_devids.h ice: support features on new E810T variants 2022-09-28 11:40:57 -07:00
ice_devlink.c devlink: move port_split/unsplit() ops into devlink_port_ops 2023-05-30 10:32:20 -07:00
ice_devlink.h ice: Prevent ADQ, DCB coexistence with Custom Tx scheduler 2022-11-17 21:41:28 -08:00
ice_eswitch.c ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_eswitch.h ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_ethtool.c ice: refactor PHY type to ethtool link mode 2023-05-17 08:42:10 -07:00
ice_ethtool.h ice: update PHY type to ethtool link mode mapping 2023-05-17 08:43:01 -07:00
ice_ethtool_fdir.c ice: Use correct order for the parameters of devm_kcalloc() 2022-06-08 08:55:13 -07:00
ice_fdir.c
ice_fdir.h
ice_flex_pipe.c ice: Reduce scope of variables 2023-01-19 08:18:03 -08:00
ice_flex_pipe.h ice: Move support DDP code out of ice_flex_pipe.c 2023-01-19 08:18:03 -08:00
ice_flex_type.h ice: Move support DDP code out of ice_flex_pipe.c 2023-01-19 08:18:03 -08:00
ice_flow.c
ice_flow.h
ice_fltr.c ice: sync netdev filters after clearing VSI 2023-02-03 09:54:18 -08:00
ice_fltr.h
ice_fw_update.c ice: handle E822 generic device ID in PLDM header 2022-07-12 09:25:34 -07:00
ice_fw_update.h
ice_gnss.c ice: do not busy-wait to read GNSS data 2023-04-20 16:33:14 -07:00
ice_gnss.h ice: increase the GNSS data polling interval to 20 ms 2023-04-20 16:33:14 -07:00
ice_hw_autogen.h ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_idc.c ice: add dynamic interrupt allocation 2023-05-16 09:38:38 -07:00
ice_idc_int.h
ice_irq.c ice: add dynamic interrupt allocation 2023-05-16 09:38:38 -07:00
ice_irq.h ice: add dynamic interrupt allocation 2023-05-16 09:38:38 -07:00
ice_lag.c ice: Remove LAG+SRIOV mutual exclusion 2023-05-17 08:43:47 -07:00
ice_lag.h ice: Remove LAG+SRIOV mutual exclusion 2023-05-17 08:43:47 -07:00
ice_lan_tx_rx.h ice: Remove and replace ice speed defines with ethtool.h versions 2022-11-23 08:59:42 -08:00
ice_lib.c Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 2023-05-18 20:04:59 -07:00
ice_lib.h ice: track interrupt vectors with xarray 2023-05-16 09:38:38 -07:00
ice_main.c ice: do not re-enable miscellaneous interrupt until thread_fn completes 2023-06-08 13:03:31 -07:00
ice_nvm.c ice: Remove cppcheck suppressions 2023-01-19 08:18:03 -08:00
ice_nvm.h ice: Add additional flags to ice_nvm_write_activate 2022-08-24 08:45:54 -07:00
ice_osdep.h
ice_pf_vsi_vlan_ops.c
ice_pf_vsi_vlan_ops.h
ice_protocol_type.h ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_ptp.c ice: introduce ICE_TX_TSTAMP_WORK enumeration 2023-06-08 10:20:12 -07:00
ice_ptp.h ice: introduce ICE_TX_TSTAMP_WORK enumeration 2023-06-08 10:20:12 -07:00
ice_ptp_consts.h
ice_ptp_hw.c ice: make Tx and Rx vernier offset calibration independent 2022-12-08 13:15:03 -08:00
ice_ptp_hw.h ice: make Tx and Rx vernier offset calibration independent 2022-12-08 13:15:03 -08:00
ice_repr.c ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_repr.h ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_sbq_cmd.h
ice_sched.c ice: fix invalid check for empty list in ice_sched_assoc_vsi_to_agg() 2023-03-28 09:48:49 -07:00
ice_sched.h ice: Add an option to pre-allocate memory for ice_sched_node 2022-11-17 21:41:28 -08:00
ice_sriov.c Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 2023-05-18 20:04:59 -07:00
ice_sriov.h ice: move ice_is_malicious_vf() to ice_virtchnl.c 2023-03-13 11:06:06 -07:00
ice_switch.c ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_switch.h ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_tc_lib.c ice: allow matching on meta data 2023-05-19 09:09:52 -07:00
ice_tc_lib.h ice: allow matching on meta data 2023-05-19 09:09:52 -07:00
ice_trace.h ice: add trace events for tx timestamps 2022-03-16 10:38:15 -07:00
ice_txrx.c ice: recycle/free all of the fragments from multi-buffer frame 2023-06-01 09:59:39 -07:00
ice_txrx.h ice: Fix undersized tx_flags variable 2023-05-12 09:27:44 +01:00
ice_txrx_lib.c ice: fix W=1 headers mismatch 2023-03-28 09:42:05 -07:00
ice_txrx_lib.h ice: Micro-optimize .ndo_xdp_xmit() path 2023-02-13 19:13:13 +01:00
ice_type.h ice: move VF overflow message count into struct ice_mbx_vf_info 2023-03-13 10:32:32 -07:00
ice_vf_lib.c ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_vf_lib.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-05-18 14:39:34 -07:00
ice_vf_lib_private.h ice: introduce ice_vf_init_host_cfg function 2023-02-06 09:41:56 -08:00
ice_vf_mbx.c ice: merge ice_mbx_report_malvf with ice_mbx_vf_state_handler 2023-03-13 11:00:10 -07:00
ice_vf_mbx.h ice: initialize mailbox snapshot earlier in PF init 2023-03-13 11:06:05 -07:00
ice_vf_vsi_vlan_ops.c ice: Fix disabling Rx VLAN filtering with port VLAN enabled 2023-02-06 15:13:02 -08:00
ice_vf_vsi_vlan_ops.h
ice_virtchnl.c ice: use src VSI instead of src MAC in slow-path 2023-05-19 09:10:39 -07:00
ice_virtchnl.h ice: call ice_is_malicious_vf() from ice_vc_process_vf_msg() 2023-03-13 11:06:06 -07:00
ice_virtchnl_allowlist.c ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_virtchnl_allowlist.h
ice_virtchnl_fdir.c ice: Reset FDIR counter in FDIR init stage 2023-04-04 08:34:52 -07:00
ice_virtchnl_fdir.h ice: introduce ice_vf_lib.c, ice_vf_lib.h, and ice_vf_lib_private.h 2022-03-15 13:22:13 -07:00
ice_vlan.h
ice_vlan_mode.c ice: define meta data to match in switch 2023-05-19 08:57:43 -07:00
ice_vlan_mode.h
ice_vsi_vlan_lib.c
ice_vsi_vlan_lib.h
ice_vsi_vlan_ops.c
ice_vsi_vlan_ops.h
ice_xsk.c ice: add individual interrupt allocation 2023-05-16 09:38:38 -07:00
ice_xsk.h ice: xsk: change batched Tx descriptor cleaning 2022-09-27 08:11:02 -07:00
Makefile ice: move interrupt related code to separate file 2023-05-16 09:16:53 -07:00