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| * | | | | | | | | igc: Remove no need declaration of the igc_configure_msixSasha Neftin2020-01-041-45/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_configure_msix function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_set_rx_modeSasha Neftin2020-01-041-177/+176
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_set_rx_mode function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_set_interrupt_capabilitySasha Neftin2020-01-041-72/+70
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_set_interrupt_capability function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_alloc_mapped_pageSasha Neftin2020-01-041-48/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_alloc_mapped_page function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_configureSasha Neftin2020-01-041-46/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_configure function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_set_default_mac_filterSasha Neftin2020-01-041-46/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_set_default_mac_filter function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_power_down_linkSasha Neftin2020-01-041-11/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_power_down_link function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | igc: Remove no need declaration of the igc_clean_tx_ringSasha Neftin2020-01-041-38/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to avoid forward-declarations of function if possible. Rearrange the igc_clean_tx_ring function implementation. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Add device ids for E822 devicesJacob Keller2020-01-033-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for E822 devices Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Suppress Coverity warnings for xdp_rxq_info_regKrzysztof Kazimierczak2020-01-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Coverity reports some of the calls to xdp_rxq_info_reg() as potential issues, because the driver does not check its return value. However, those calls are wrapped with "if (!xdp_rxq_info_is_reg(&ring->xdp_rxq))" and this check alone is enough to be sure that the function will never fail. All possible states of xdp_rxq_info are: - NEW, - REGISTERED, - UNREGISTERED, - UNUSED. The driver won't mark a queue as UNUSED under no circumstance, so the return value can be ignored safely. Add comments for Coverity right above calls to xdp_rxq_info_reg() to suppress the warnings. Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Add a boundary check in ice_xsk_umem()Krzysztof Kazimierczak2020-01-033-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ice_xsk_umem(), variable qid which is later used as an array index, is not validated for a possible boundary exceedance. Because of that, a calling function might receive an invalid address, which causes general protection fault when dereferenced. To address this, add a boundary check to see if qid is greater than the size of a UMEM array. Also, don't let user change vsi->num_xsk_umems just by trying to setup a second UMEM if its value is already set up (i.e. UMEM region has already been allocated for this VSI). While at it, make sure that ring->zca.free pointer is always zeroed out if there is no UMEM on a specified ring. Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: add extra check for null Rx descriptorMitch Williams2020-01-031-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the case where the hardware gives us a null Rx descriptor, it is theoretically possible that we could call one of our skb-construction functions with no data pointer, which would cause a panic. In real life, this will never happen - we only get null RX descriptors as the final descriptor in a chain of otherwise-valid descriptors. When this happens, the skb will be extant and we'll just call ice_add_rx_frag(), which can deal with empty data buffers. Unfortunately, Coverity does not have intimate knowledge of our hardware, so we must add a check here. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: suppress checked_return errorBruce Allan2020-01-031-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Coverity reports an error that is not really an error; suppress it. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Demote MTU change print to debugTony Nguyen2020-01-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following the changes of commit 12299132b3d3 ("net: ethernet: intel: Demote MTU change prints to debug"), change the MTU change message to netdev_dbg() Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Enable ip link show on the PF to display VF unicast MAC(s)Brett Creeley2020-01-031-100/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently when there are SR-IOV VF(s) and the user does "ip link show <pf interface>" the VF unicast MAC addresses all show 00:00:00:00:00:00 if the unicast MAC was set via VIRTCHNL (i.e. not administratively set by the host PF). This is misleading to the host administrator. Fix this by setting the VF's dflt_lan_addr.addr when the VF's unicast MAC address is configured via VIRTCHNL. There are a couple cases where we don't allow the dflt_lan_addr.addr field to be written. First, If the VF's pf_set_mac field is true and the VF is not trusted, then we don't allow the dflt_lan_addr.addr to be modified. Second, if the dflt_lan_addr.addr has already been set (i.e. via VIRTCHNL). Also a small refactor was done to separate the flow for add and delete MAC addresses in order to simplify the logic for error conditions and set/clear the VF's dflt_lan_addr.addr field. Signed-off-by: Brett Creeley <brett.creeley@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Fix VF link state when it's IFLA_VF_LINK_STATE_AUTOBrett Creeley2020-01-032-47/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the flow for ice_set_vf_link_state() is not configuring link the same as all other VF link configuration flows. Fix this by only setting the necessary VF members in ice_set_vf_link_state() and then call ice_vc_notify_link_state() to actually configure link for the VF. This made ice_set_pfe_link_forced() unnecessary, so it was deleted. Also, this commonizes the link flows for the VF to all call ice_vc_notify_link_state(). Signed-off-by: Brett Creeley <brett.creeley@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Remove Rx flex descriptor programmingVignesh Sridhar2020-01-032-113/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove Rx flex descriptor metadata and flag programming; per specification these registers cannot be written to as they are read only. Signed-off-by: Vignesh Sridhar <vignesh.sridhar@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Return error on not supported ethtool -C parametersMichal Swiatkowski2020-01-031-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check for all unused parameters, if ethtool sent one of them, print info about that and return error. Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Restore interrupt throttle settings after VSI rebuildMichal Swiatkowski2020-01-032-0/+108
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After each rebuild driver deallocates q_vectors, so the interrupt throttle rate (ITR) settings get lost. Create a function to save and restore ITR for each queue. If a user increases the number of queues, restore all the previous queue settings for each existing queue, and the additional queues will get the default setting. Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Set default value for ITR in alloc functionMichal Swiatkowski2020-01-031-9/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the user sets itr_setting to zero from ethtool -C, the driver changes this value to default in ice_cfg_itr (for example after changing ring param). Remove code that sets default value in ice_cfg_itr and move it to place where the driver allocates q_vectors. Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Add ice_for_each_vf() macroBrett Creeley2020-01-034-15/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we do "for (i = 0; i < pf->num_alloc_vfs; i++)" all over the place. Many other places use macros to contain this repeated for loop, So create the macro ice_for_each_vf(pf, i) that does the same thing. There were a couple places we were using one loop variable and a VF iterator, which were changed to using a local variable within the ice_for_each_vf() macro. Also in ice_alloc_vfs() we were setting pf->num_alloc_vfs after doing "for (i = 0; i < num_alloc_vfs; i++)". Instead assign pf->num_alloc_vfs right after allocating memory for the pf->vf array. Signed-off-by: Brett Creeley <brett.creeley@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Add code to keep track of current dflt_vsiBrett Creeley2020-01-034-16/+155
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't have more than one default VSI so prevent another VSI from overwriting the current dflt_vsi. This was achieved by adding the following functions: ice_is_dflt_vsi_in_use() - Used to check if the default VSI is already being used. ice_is_vsi_dflt_vsi() - Used to check if VSI passed in is in fact the default VSI. ice_set_dflt_vsi() - Used to set the default VSI via a switch rule ice_clear_dflt_vsi() - Used to clear the default VSI via a switch rule. Also, there was no need to introduce any locking because all mailbox events and synchronization of switch filters for the PF happen in the service task. Signed-off-by: Brett Creeley <brett.creeley@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Fix VF spoofchkBrett Creeley2020-01-034-97/+146
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are many things wrong with the function ice_set_vf_spoofchk(). 1. The VSI being modified is the PF VSI, not the VF VSI. 2. We are enabling Rx VLAN pruning instead of Tx VLAN anti-spoof. 3. The spoofchk setting for each VF is not initialized correctly or re-initialized correctly on reset. To fix [1] we need to make sure we are modifying the VF VSI. This is done by using the vf->lan_vsi_idx to index into the PF's VSI array. To fix [2] replace setting Rx VLAN pruning in ice_set_vf_spoofchk() with setting Tx VLAN anti-spoof. To Fix [3] we need to make sure the initial VSI settings match what is done in ice_set_vf_spoofchk() for spoofchk=on. Also make sure this also works for VF reset. This was done by modifying ice_vsi_init() to account for the current spoofchk state of the VF VSI. Because of these changes, Tx VLAN anti-spoof needs to be removed from ice_cfg_vlan_pruning(). This is okay for the VF because this is now controlled from the admin enabling/disabling spoofchk. For the PF, Tx VLAN anti-spoof should not be set. This change requires us to call ice_set_vf_spoofchk() when configuring promiscuous mode for the VF which requires ice_set_vf_spoofchk() to move in order to prevent a forward declaration prototype. Also, add VLAN 0 by default when allocating a VF since the PF is unaware if the guest OS is running the 8021q module. Without this, MDD events will trigger on untagged traffic because spoofcheck is enabled by default. Due to this change, ignore add/delete messages for VLAN 0 from VIRTCHNL since this is added/deleted during VF initialization/teardown respectively and should not be modified. Signed-off-by: Brett Creeley <brett.creeley@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | ice: Support UDP segmentation offloadBrett Creeley2020-01-032-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on the work done by Alex Duyck on other Intel drivers, add code to support UDP segmentation offload (USO) for the ice driver. Signed-off-by: Brett Creeley <brett.creeley@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | bna: remove set but not used variable 'pgoff'yu kuai2020-01-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/ethernet/brocade/bna/bfa_ioc.c: In function ‘bfa_ioc_fwver_clear’: drivers/net/ethernet/brocade/bna/bfa_ioc.c:1127:13: warning: variable ‘pgoff’ set but not used [-Wunused-but-set-variable] It is never used, and so can be removed. Signed-off-by: yu kuai <yukuai3@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | net: netsec: Change page pool nid to NUMA_NO_NODEIlias Apalodimas2020-01-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current driver only exists on a non NUMA aware machine. With 44768decb7c0 ("page_pool: handle page recycle for NUMA_NO_NODE condition") applied we can safely change that to NUMA_NO_NODE and accommodate future NUMA aware hardware using netsec network interface Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | enetc: add support time specific departure base on the qos etfPo Liu2020-01-024-1/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ENETC implement time specific departure capability, which enables the user to specify when a frame can be transmitted. When this capability is enabled, the device will delay the transmission of the frame so that it can be transmitted at the precisely specified time. The delay departure time up to 0.5 seconds in the future. If the departure time in the transmit BD has not yet been reached, based on the current time, the packet will not be transmitted. This driver was loaded by Qos driver ETF. User could load it by tc commands. Here are the example commands: tc qdisc add dev eth0 root handle 1: mqprio \ num_tc 8 map 0 1 2 3 4 5 6 7 hw 1 tc qdisc replace dev eth0 parent 1:8 etf \ clockid CLOCK_TAI delta 30000 offload These example try to set queue mapping first and then set queue 7 with 30us ahead dequeue time. Then user send test frame should set SO_TXTIME feature for socket. There are also some limitations for this feature in hardware: - Transmit checksum offloads and time specific departure operation are mutually exclusive. - Time Aware Shaper feature (Qbv) offload and time specific departure operation are mutually exclusive. Signed-off-by: Po Liu <Po.Liu@nxp.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | fsl/fman: use resource_sizeJulia Lawall2020-01-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use resource_size rather than a verbose computation on the end and start fields. The semantic patch that makes these changes is as follows: (http://coccinelle.lip6.fr/) <smpl> @@ struct resource ptr; @@ - (ptr.end + 1 - ptr.start) + resource_size(&ptr) @@ struct resource *ptr; @@ - (ptr->end + 1 - ptr->start) + resource_size(ptr) </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | sfc: Remove unnecessary dependencies on I2CBen Hutchings2020-01-023-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only the SFC4000 code, now moved to sfc-falcon, needed I2C. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | vxlan: Fix alignment and code style of vxlan.cNiu Xilei2020-01-021-10/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed Coding function and style issues Signed-off-by: Niu Xilei <niu_xilei@163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | mlxsw: spectrum_dcb: Allow setting default port priorityPetr Machata2020-01-021-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When APP TLV selector 1 (EtherType) is used with PID of 0, the corresponding entry specifies "default application priority [...] when application priority is not otherwise specified." mlxsw currently supports this type of APP entry, but uses it only as a fallback for unspecified DSCP rules. However non-IP traffic is prioritized according to port-default priority, not according to the DSCP-to-prio tables, and thus it's currently not possible to prioritize such traffic correctly. Extend the use of the abovementioned APP entry to also set default port priority. Signed-off-by: Petr Machata <petrm@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | mlxsw: reg: Add QoS Port DSCP to Priority Mapping RegisterPetr Machata2020-01-021-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add QPDP. This register controls the port default Switch Priority and Color. The default Switch Priority and Color are used for frames where the trust state uses default values. Currently there are two cases where this applies: a port is in trust-PCP state, but a packet arrives untagged; and a port is in trust-DSCP state, but a non-IP packet arrives. Signed-off-by: Petr Machata <petrm@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | Merge branch '1GbE' of ↵David S. Miller2019-12-318-46/+322
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue Jeff Kirsher says: ==================== 1GbE Intel Wired LAN Driver Updates 2019-12-31 This series contains updates to e1000e, igb and igc only. Robert Beckett provide an igb change to assist in keeping packets from being dropped due to receive descriptor ring being full when receive flow control is enabled. Create a separate function to setup SRRCTL to ease in reuse and ensure that setting of the drop enable bit only if receive flow control is not enabled. Sasha adds support for scatter gather support in igc. Improve the direct memory address mapping flow by optimizing/simplifying and more clear. Update igc to use pci_release_mem_regions() instead of pci_release_selected_regions(). Clean up function header comments to align with the actual code. Adds support for 64 bit DMA access, to help handle socket buffer fragments in high memory. Adds legacy power management support in igc by implementing suspend, resume, runtime_suspend/resume, and runtime_idle callbacks. Clean up references to Serdes interface in igc since that interface is not supported for i225 devices. Alex replaces the pr_info calls with netdev_info in all cases related to netdev link state, as suggested by Joe Perches. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | | | | | | | igc: Remove serdes comments from a description of methodsSasha Neftin2019-12-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Serdes interface is not applicable for i225 devices. Remove this from comments and make comments more clearly. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | e1000e: Use netdev_info instead of pr_info for link messagesAlexander Duyck2019-12-311-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the pr_info calls with netdev_info in all cases related to the netdevice link state. As a result of this patch the link messages will change as shown below. Before: e1000e: ens3 NIC Link is Down e1000e: ens3 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx After: e1000e 0000:00:03.0 ens3: NIC Link is Down e1000e 0000:00:03.0 ens3: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Add legacy power management supportSasha Neftin2019-12-314-0/+246
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add suspend, resume, runtime_suspend, runtime_resume and runtime_idle callbacks implementation. Reported-by: kbuild test robot <lpk@intel.com> Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Add 64 bit DMA access supportSasha Neftin2019-12-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On relevant platforms ndo_start_xmit can handle socket buffer fragments in high memory Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Fix parameter descriptions for a several functionsSasha Neftin2019-12-311-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | igc_watchdog, igc_set_interrupt_capability, igc_init_interrupt_scheme, __igc_open and __igc_close parameter descriptions has not reflected functions meaning. Add meaningful description. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Fix the parameter description for igc_alloc_rx_buffersSasha Neftin2019-12-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function description for igc_alloc_rx_buffers has not reflected the function meaning. Add meaningful description. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Remove excess parameter description from igc_is_non_eopSasha Neftin2019-12-311-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function description for igc_is_non_eop includes an extra @skb parameter description. This parameter doesn't exist on the function, so remove it. Suggested-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Prefer to use the pci_release_mem_regions methodSasha Neftin2019-12-311-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the pci_release_mem_regions method instead of the pci_release_selected_regions method Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Improve the DMA mapping flowSasha Neftin2019-12-311-15/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve the probe flow and set both the DMA mask and the coherent to the same thing. Make the flow optimized and cleared. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igc: Add scatter gather supportSasha Neftin2019-12-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Scatter gather is used to do DMA data transfers of data that is written to noncontiguous areas of memory. This patch enables scatter gather support. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | | | | | | igb: dont drop packets if rx flow control is enabledRobert Beckett2019-12-313-14/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If Rx flow control has been enabled (via autoneg or forced), packets should not be dropped due to Rx descriptor ring exhaustion. Instead pause frames should be used to apply back pressure. This only applies if VFs are not in use. Move SRRCTL setup to its own function for easy reuse and only set drop enable bit if Rx flow control is not enabled. Since v1: always enable dropping of packets if VFs in use. Signed-off-by: Robert Beckett <bob.beckett@collabora.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2019-12-3120-66/+99
| |\ \ \ \ \ \ \ \ \ \ | | |/ / / / / / / / / | |/| | | | | | | | / | | | |_|_|_|_|_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | Simple overlapping changes in bpf land wrt. bpf_helper_defs.h handling. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | net: dsa: sja1105: Empty the RX timestamping queue on PTP settings changeVladimir Oltean2019-12-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When disabling PTP timestamping, don't reset the switch with the new static config until all existing PTP frames have been timestamped on the RX path or dropped. There's nothing we can do with these afterwards. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | net: dsa: sja1105: Use PTP core's dedicated kernel thread for RX timestampingVladimir Oltean2019-12-302-18/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | And move the queue of skb's waiting for RX timestamps into the ptp_data structure, since it isn't needed if PTP is not compiled. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | sfc: avoid duplicate error handling code in 'efx_ef10_sriov_set_vf_mac()'Christophe JAILLET2019-12-301-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'eth_zero_addr()' is already called in the error handling path. This is harmless, but there is no point in calling it twice, so remove one. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | gianfar: Fix TX timestamping with a stacked DSA driverVladimir Oltean2019-12-281-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver wrongly assumes that it is the only entity that can set the SKBTX_IN_PROGRESS bit of the current skb. Therefore, in the gfar_clean_tx_ring function, where the TX timestamp is collected if necessary, the aforementioned bit is used to discriminate whether or not the TX timestamp should be delivered to the socket's error queue. But a stacked driver such as a DSA switch can also set the SKBTX_IN_PROGRESS bit, which is actually exactly what it should do in order to denote that the hardware timestamping process is undergoing. Therefore, gianfar would misinterpret the "in progress" bit as being its own, and deliver a second skb clone in the socket's error queue, completely throwing off a PTP process which is not expecting to receive it, _even though_ TX timestamping is not enabled for gianfar. There have been discussions [0] as to whether non-MAC drivers need or not to set SKBTX_IN_PROGRESS at all (whose purpose is to avoid sending 2 timestamps, a sw and a hw one, to applications which only expect one). But as of this patch, there are at least 2 PTP drivers that would break in conjunction with gianfar: the sja1105 DSA switch and the felix switch, by way of its ocelot core driver. So regardless of that conclusion, fix the gianfar driver to not do stuff based on flags set by others and not intended for it. [0]: https://www.spinics.net/lists/netdev/msg619699.html Fixes: f0ee7acfcdd4 ("gianfar: Add hardware TX timestamping support") Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | net/wan/fsl_ucc_hdlc: remove set but not used variables 'ut_info' and 'ret'Chen Zhou2019-12-281-9/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: drivers/net/wan/fsl_ucc_hdlc.c: In function ucc_hdlc_irq_handler: drivers/net/wan/fsl_ucc_hdlc.c:643:23: warning: variable ut_info set but not used [-Wunused-but-set-variable] drivers/net/wan/fsl_ucc_hdlc.c: In function uhdlc_suspend: drivers/net/wan/fsl_ucc_hdlc.c:880:23: warning: variable ut_info set but not used [-Wunused-but-set-variable] drivers/net/wan/fsl_ucc_hdlc.c: In function uhdlc_resume: drivers/net/wan/fsl_ucc_hdlc.c:925:6: warning: variable ret set but not used [-Wunused-but-set-variable] Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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