1. 19 Jan, 2021 20 commits
    • Yunjian Wang's avatar
      vhost_net: avoid tx queue stuck when sendmsg fails · dc9c9e72
      Yunjian Wang authored
      Currently the driver doesn't drop a packet which can't be sent by tun
      (e.g bad packet). In this case, the driver will always process the
      same packet lead to the tx queue stuck.
      
      To fix this issue:
      1. in the case of persistent failure (e.g bad packet), the driver
         can skip this descriptor by ignoring the error.
      2. in the case of transient failure (e.g -ENOBUFS, -EAGAIN and -ENOMEM),
         the driver schedules the worker to try again.
      Signed-off-by: default avatarYunjian Wang <wangyunjian@huawei.com>
      Acked-by: default avatarJason Wang <jasowang@redhat.com>
      Acked-by: default avatarWillem de Bruijn <willemb@google.com>
      Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
      Link: https://lore.kernel.org/r/1610685980-38608-1-git-send-email-wangyunjian@huawei.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      dc9c9e72
    • Tom Rix's avatar
      net: hns: fix variable used when DEBUG is defined · 99d51897
      Tom Rix authored
      When DEBUG is defined this error occurs
      
      drivers/net/ethernet/hisilicon/hns/hns_enet.c:1505:36: error:
        ‘struct net_device’ has no member named ‘ae_handle’;
        did you mean ‘rx_handler’?
        assert(skb->queue_mapping < ndev->ae_handle->q_num);
                                          ^~~~~~~~~
      
      ae_handle is an element of struct hns_nic_priv, so change
      ndev to priv.
      Signed-off-by: default avatarTom Rix <trix@redhat.com>
      Link: https://lore.kernel.org/r/20210117191044.533725-1-trix@redhat.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      99d51897
    • Tom Rix's avatar
      arcnet: fix macro name when DEBUG is defined · 7cfabe4f
      Tom Rix authored
      When DEBUG is defined this error occurs
      
      drivers/net/arcnet/com20020_cs.c:70:15: error: ‘com20020_REG_W_ADDR_HI’
        undeclared (first use in this function);
        did you mean ‘COM20020_REG_W_ADDR_HI’?
             ioaddr, com20020_REG_W_ADDR_HI);
                     ^~~~~~~~~~~~~~~~~~~~~~
      
      From reviewing the context, the suggestion is what is meant.
      Signed-off-by: default avatarTom Rix <trix@redhat.com>
      Acked-by: default avatarJoe Perches <joe@perches.com>
      Link: https://lore.kernel.org/r/20210117181519.527625-1-trix@redhat.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      7cfabe4f
    • Jakub Kicinski's avatar
      Merge branch 'tls-device-offload-for-bond' · be7f4578
      Jakub Kicinski authored
      Tariq Toukan says:
      
      ====================
      TLS device offload for Bond
      
      This series opens TX and RX TLS device offload for bond interfaces.
      This allows bond interfaces to benefit from capable lower devices.
      
      We add a new ndo_sk_get_lower_dev() to be used to get the lower dev that
      corresponds to a given socket.
      The TLS module uses it to interact directly with the lowest device in
      chain, and invoke the control operations in tlsdev_ops. This means that the
      bond interface doesn't have his own struct tlsdev_ops instance and
      derived logic/callbacks.
      
      To keep simple track of the HW and SW TLS contexts, we bind each socket to
      a specific lower device for the socket's whole lifetime. This is logically
      valid (and similar to the SW kTLS behavior) in the following bond configuration,
      so we restrict the offload support to it:
      
      ((mode == balance-xor) or (mode == 802.3ad))
      and xmit_hash_policy == layer3+4.
      
      In this design, TLS TX/RX offload feature flags of the bond device are
      independent from the lower devices. They reflect the current features state,
      but are not directly controllable.
      This is because the bond driver is bypassed by the call to
      ndo_sk_get_lower_dev(), without him knowing who the caller is.
      The bond TLS feature flags are set/cleared only according to the configuration
      of the mode and xmit_hash_policy.
      
      Bypass is true only for the control flow. Packets in fast path still go through
      the bond logic.
      
      The design here differs from the xfrm/ipsec offload, where the bond driver
      has his own copy of struct xfrmdev_ops and callbacks.
      ====================
      
      Link: https://lore.kernel.org/r/20210117145949.8632-1-tariqt@nvidia.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      be7f4578
    • Tariq Toukan's avatar
      net/tls: Except bond interface from some TLS checks · 4e5a7332
      Tariq Toukan authored
      In the tls_dev_event handler, ignore tlsdev_ops requirement for bond
      interfaces, they do not exist as the interaction is done directly with
      the lower device.
      
      Also, make the validate function pass when it's called with the upper
      bond interface.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      4e5a7332
    • Tariq Toukan's avatar
      net/tls: Device offload to use lowest netdevice in chain · 153cbd13
      Tariq Toukan authored
      Do not call the tls_dev_ops of upper devices. Instead, ask them
      for the proper lowest device and communicate with it directly.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      153cbd13
    • Tariq Toukan's avatar
      net/bonding: Declare TLS RX device offload support · dc5809f9
      Tariq Toukan authored
      Following the description in previous patch (for TX):
      As the bond interface is being bypassed by the TLS module, interacting
      directly against the lower devs, there is no way for the bond interface
      to disable its device offload capabilities, as long as the mode/policy
      config allows it.
      Hence, the feature flag is not directly controllable, but just reflects
      the offload status based on the logic under bond_sk_check().
      
      Here we just declare RX device offload support, and expose it via the
      NETIF_F_HW_TLS_RX flag.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      dc5809f9
    • Tariq Toukan's avatar
      net/bonding: Implement TLS TX device offload · 89df6a81
      Tariq Toukan authored
      Implement TLS TX device offload for bonding interfaces.
      This allows kTLS sockets running on a bond to benefit from the
      device offload on capable lower devices.
      
      To allow a simple and fast maintenance of the TLS context in SW and
      lower devices, we bind the TLS socket to a specific lower dev.
      To achieve a behavior similar to SW kTLS, we support only balance-xor
      and 802.3ad modes, with xmit_hash_policy=layer3+4. This is enforced
      in bond_sk_check(), done in a previous patch.
      
      For the above configuration, the SW implementation keeps picking the
      same exact lower dev for all the socket's SKBs. The device offload
      behaves similarly, making the decision once at the connection creation.
      
      Per socket, the TLS module should work directly with the lowest netdev
      in chain, to call the tls_dev_ops operations.
      
      As the bond interface is being bypassed by the TLS module, interacting
      directly against the lower devs, there is no way for the bond interface
      to disable its device offload capabilities, as long as the mode/policy
      config allows it.
      Hence, the feature flag is not directly controllable, but just reflects
      the current offload status based on the logic under bond_sk_check().
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      89df6a81
    • Tariq Toukan's avatar
      net/bonding: Take update_features call out of XFRM funciton · f45583de
      Tariq Toukan authored
      In preparation for more cases that call netdev_update_features().
      
      While here, move the features logic to the stage where struct bond
      is already updated, and pass it as the only parameter to function
      bond_set_xfrm_features().
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      f45583de
    • Tariq Toukan's avatar
      net/bonding: Implement ndo_sk_get_lower_dev · 007feb87
      Tariq Toukan authored
      Add ndo_sk_get_lower_dev() implementation for bond interfaces.
      
      Support only for the cases where the socket's and SKBs' hash
      yields identical value for the whole connection lifetime.
      
      Here we restrict it to L3+4 sockets only, with
      xmit_hash_policy==LAYER34 and bond modes xor/802.3ad.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      007feb87
    • Tariq Toukan's avatar
      net/bonding: Take IP hash logic into a helper · 5b998545
      Tariq Toukan authored
      Hash logic on L3 will be used in a downstream patch for one more use
      case.
      Take it to a function for a better code reuse.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      5b998545
    • Tariq Toukan's avatar
      net: netdevice: Add operation ndo_sk_get_lower_dev · 719a402c
      Tariq Toukan authored
      ndo_sk_get_lower_dev returns the lower netdev that corresponds to
      a given socket.
      Additionally, we implement a helper netdev_sk_get_lowest_dev() to get
      the lowest one in chain.
      Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
      Reviewed-by: default avatarBoris Pismenny <borisp@nvidia.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      719a402c
    • Christophe JAILLET's avatar
      net/qla3xxx: switch from 'pci_' to 'dma_' API · 41fb4c1b
      Christophe JAILLET authored
      The wrappers in include/linux/pci-dma-compat.h should go away.
      
      The patch has been generated with the coccinelle script below and has been
      hand modified to replace GFP_ with a correct flag.
      It has been compile tested.
      
      When memory is allocated in 'ql_alloc_net_req_rsp_queues()' GFP_KERNEL can
      be used because it is only called from 'ql_alloc_mem_resources()' which
      already calls 'ql_alloc_buffer_queues()' which uses GFP_KERNEL. (see below)
      
      When memory is allocated in 'ql_alloc_buffer_queues()' GFP_KERNEL can be
      used because this flag is already used just a few line above.
      
      When memory is allocated in 'ql_alloc_small_buffers()' GFP_KERNEL can
      be used because it is only called from 'ql_alloc_mem_resources()' which
      already calls 'ql_alloc_buffer_queues()' which uses GFP_KERNEL. (see above)
      
      When memory is allocated in 'ql_alloc_mem_resources()' GFP_KERNEL can be
      used because this function already calls 'ql_alloc_buffer_queues()' which
      uses GFP_KERNEL. (see above)
      
      While at it, use 'dma_set_mask_and_coherent()' instead of 'dma_set_mask()/
      dma_set_coherent_mask()' in order to slightly simplify code.
      
      @@
      @@
      -    PCI_DMA_BIDIRECTIONAL
      +    DMA_BIDIRECTIONAL
      
      @@
      @@
      -    PCI_DMA_TODEVICE
      +    DMA_TO_DEVICE
      
      @@
      @@
      -    PCI_DMA_FROMDEVICE
      +    DMA_FROM_DEVICE
      
      @@
      @@
      -    PCI_DMA_NONE
      +    DMA_NONE
      
      @@
      expression e1, e2, e3;
      @@
      -    pci_alloc_consistent(e1, e2, e3)
      +    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)
      
      @@
      expression e1, e2, e3;
      @@
      -    pci_zalloc_consistent(e1, e2, e3)
      +    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_free_consistent(e1, e2, e3, e4)
      +    dma_free_coherent(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_map_single(e1, e2, e3, e4)
      +    dma_map_single(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_unmap_single(e1, e2, e3, e4)
      +    dma_unmap_single(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4, e5;
      @@
      -    pci_map_page(e1, e2, e3, e4, e5)
      +    dma_map_page(&e1->dev, e2, e3, e4, e5)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_unmap_page(e1, e2, e3, e4)
      +    dma_unmap_page(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_map_sg(e1, e2, e3, e4)
      +    dma_map_sg(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_unmap_sg(e1, e2, e3, e4)
      +    dma_unmap_sg(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
      +    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_dma_sync_single_for_device(e1, e2, e3, e4)
      +    dma_sync_single_for_device(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
      +    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2, e3, e4;
      @@
      -    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
      +    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)
      
      @@
      expression e1, e2;
      @@
      -    pci_dma_mapping_error(e1, e2)
      +    dma_mapping_error(&e1->dev, e2)
      
      @@
      expression e1, e2;
      @@
      -    pci_set_dma_mask(e1, e2)
      +    dma_set_mask(&e1->dev, e2)
      
      @@
      expression e1, e2;
      @@
      -    pci_set_consistent_dma_mask(e1, e2)
      +    dma_set_coherent_mask(&e1->dev, e2)
      Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
      Link: https://lore.kernel.org/r/20210117081542.560021-1-christophe.jaillet@wanadoo.frSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      41fb4c1b
    • Cong Wang's avatar
      net_sched: fix RTNL deadlock again caused by request_module() · d349f997
      Cong Wang authored
      tcf_action_init_1() loads tc action modules automatically with
      request_module() after parsing the tc action names, and it drops RTNL
      lock and re-holds it before and after request_module(). This causes a
      lot of troubles, as discovered by syzbot, because we can be in the
      middle of batch initializations when we create an array of tc actions.
      
      One of the problem is deadlock:
      
      CPU 0					CPU 1
      rtnl_lock();
      for (...) {
        tcf_action_init_1();
          -> rtnl_unlock();
          -> request_module();
      				rtnl_lock();
      				for (...) {
      				  tcf_action_init_1();
      				    -> tcf_idr_check_alloc();
      				   // Insert one action into idr,
      				   // but it is not committed until
      				   // tcf_idr_insert_many(), then drop
      				   // the RTNL lock in the _next_
      				   // iteration
      				   -> rtnl_unlock();
          -> rtnl_lock();
          -> a_o->init();
            -> tcf_idr_check_alloc();
            // Now waiting for the same index
            // to be committed
      				    -> request_module();
      				    -> rtnl_lock()
      				    // Now waiting for RTNL lock
      				}
      				rtnl_unlock();
      }
      rtnl_unlock();
      
      This is not easy to solve, we can move the request_module() before
      this loop and pre-load all the modules we need for this netlink
      message and then do the rest initializations. So the loop breaks down
      to two now:
      
              for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
                      struct tc_action_ops *a_o;
      
                      a_o = tc_action_load_ops(name, tb[i]...);
                      ops[i - 1] = a_o;
              }
      
              for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
                      act = tcf_action_init_1(ops[i - 1]...);
              }
      
      Although this looks serious, it only has been reported by syzbot, so it
      seems hard to trigger this by humans. And given the size of this patch,
      I'd suggest to make it to net-next and not to backport to stable.
      
      This patch has been tested by syzbot and tested with tdc.py by me.
      
      Fixes: 0fedc63f ("net_sched: commit action insertions together")
      Reported-and-tested-by: syzbot+82752bc5331601cf4899@syzkaller.appspotmail.com
      Reported-and-tested-by: syzbot+b3b63b6bff456bd95294@syzkaller.appspotmail.com
      Reported-by: syzbot+ba67b12b1ca729912834@syzkaller.appspotmail.com
      Cc: Jiri Pirko <jiri@resnulli.us>
      Signed-off-by: default avatarCong Wang <cong.wang@bytedance.com>
      Tested-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
      Acked-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
      Link: https://lore.kernel.org/r/20210117005657.14810-1-xiyou.wangcong@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      d349f997
    • Tom Rix's avatar
      net: phy: national: remove definition of DEBUG · 6ea9309a
      Tom Rix authored
      Defining DEBUG should only be done in development.
      So remove DEBUG.
      Signed-off-by: default avatarTom Rix <trix@redhat.com>
      Link: https://lore.kernel.org/r/20210115235346.289611-1-trix@redhat.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      6ea9309a
    • Jakub Kicinski's avatar
      Merge branch 'net-make-udp-tunnel-devices-support-fraglist' · c080559a
      Jakub Kicinski authored
      Xin Long says:
      
      ====================
      net: make udp tunnel devices support fraglist
      
      Like GRE device, UDP tunnel devices should also support fraglist, so
      that some protocol (like SCTP) HW GSO that requires NETIF_F_FRAGLIST
      in the dev can work. Especially when the lower device support both
      NETIF_F_GSO_UDP_TUNNEL and NETIF_F_GSO_SCTP.
      ====================
      
      Link: https://lore.kernel.org/r/cover.1610704037.git.lucien.xin@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      c080559a
    • Xin Long's avatar
      bareudp: add NETIF_F_FRAGLIST flag for dev features · 3224dcfd
      Xin Long authored
      Like vxlan and geneve, bareudp also needs this dev feature
      to support some protocol's HW GSO.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      3224dcfd
    • Xin Long's avatar
      geneve: add NETIF_F_FRAGLIST flag for dev features · 18423e1a
      Xin Long authored
      Some protocol HW GSO requires fraglist supported by the device, like
      SCTP. Without NETIF_F_FRAGLIST set in the dev features of geneve, it
      would have to do SW GSO before the packets enter the driver, even
      when the geneve dev and lower dev (like veth) both have the feature
      of NETIF_F_GSO_SCTP.
      
      So this patch is to add it for geneve.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      18423e1a
    • Xin Long's avatar
      vxlan: add NETIF_F_FRAGLIST flag for dev features · cb2c5711
      Xin Long authored
      Some protocol HW GSO requires fraglist supported by the device, like
      SCTP. Without NETIF_F_FRAGLIST set in the dev features of vxlan, it
      would have to do SW GSO before the packets enter the driver, even
      when the vxlan dev and lower dev (like veth) both have the feature
      of NETIF_F_GSO_SCTP.
      
      So this patch is to add it for vxlan.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      cb2c5711
    • Andrea Parri (Microsoft)'s avatar
      hv_netvsc: Add (more) validation for untrusted Hyper-V values · 505e3f00
      Andrea Parri (Microsoft) authored
      For additional robustness in the face of Hyper-V errors or malicious
      behavior, validate all values that originate from packets that Hyper-V
      has sent to the guest.  Ensure that invalid values cannot cause indexing
      off the end of an array, or subvert an existing validation via integer
      overflow.  Ensure that outgoing packets do not have any leftover guest
      memory that has not been zeroed out.
      Reported-by: default avatarJuan Vazquez <juvazq@microsoft.com>
      Signed-off-by: default avatarAndrea Parri (Microsoft) <parri.andrea@gmail.com>
      Link: https://lore.kernel.org/r/20210114202628.119541-1-parri.andrea@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      505e3f00
  2. 18 Jan, 2021 9 commits
  3. 17 Jan, 2021 11 commits
    • Jakub Kicinski's avatar
      Merge branch 'net-fix-the-features-flag-in-sctp_gso_segment' · 213b97b1
      Jakub Kicinski authored
      Xin Long says:
      
      ====================
      net: fix the features flag in sctp_gso_segment
      
      Patch 1/2 is to improve the code in skb_segment(), and it is needed
      by Patch 2/2.
      ====================
      
      Link: https://lore.kernel.org/r/cover.1610703289.git.lucien.xin@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      213b97b1
    • Xin Long's avatar
      sctp: remove the NETIF_F_SG flag before calling skb_segment · 1fef8544
      Xin Long authored
      It makes more sense to clear NETIF_F_SG instead of set it when
      calling skb_segment() in sctp_gso_segment(), since SCTP GSO is
      using head_skb's fraglist, of which all frags are linear skbs.
      
      This will make SCTP GSO code more understandable.
      Suggested-by: default avatarAlexander Duyck <alexander.duyck@gmail.com>
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      1fef8544
    • Xin Long's avatar
      net: move the hsize check to the else block in skb_segment · dbd50f23
      Xin Long authored
      After commit 89319d38 ("net: Add frag_list support to skb_segment"),
      it goes to process frag_list when !hsize in skb_segment(). However, when
      using skb frag_list, sg normally should not be set. In this case, hsize
      will be set with len right before !hsize check, then it won't go to
      frag_list processing code.
      
      So the right thing to do is move the hsize check to the else block, so
      that it won't affect the !hsize check for frag_list processing.
      
      v1->v2:
        - change to do "hsize <= 0" check instead of "!hsize", and also move
          "hsize < 0" into else block, to save some cycles, as Alex suggested.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Reviewed-by: default avatarAlexander Duyck <alexanderduyck@fb.com>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      dbd50f23
    • Xu Wang's avatar
      net: mscc: ocelot: Remove unneeded semicolon · 20efd2c7
      Xu Wang authored
      fix semicolon.cocci warnings:
      drivers/net/ethernet/mscc/ocelot_net.c:460:2-3: Unneeded semicolon
      Signed-off-by: default avatarXu Wang <vulab@iscas.ac.cn>
      Link: https://lore.kernel.org/r/20210115095544.33164-1-vulab@iscas.ac.cnSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      20efd2c7
    • Raju Rangoju's avatar
      cxgb4: enable interrupt based Tx completions for T5 · b660bccb
      Raju Rangoju authored
      Enable interrupt based Tx completions to improve latency for T5.
      The consumer index (CIDX) will now come via interrupts so that Tx
      SKBs can be freed up sooner in Rx path. Also, enforce CIDX flush
      threshold override (CIDXFTHRESHO) to improve latency for slow
      traffic. This ensures that the interrupt is generated immediately
      whenever hardware catches up with driver (i.e. CIDX == PIDX is
      reached), which is often the case for slow traffic.
      Signed-off-by: default avatarRaju Rangoju <rajur@chelsio.com>
      Link: https://lore.kernel.org/r/20210115102059.6846-1-rajur@chelsio.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      b660bccb
    • Jakub Kicinski's avatar
      Merge branch 'rid-w-1-warnings-in-ethernet' · c761b2df
      Jakub Kicinski authored
      Lee Jones says:
      
      ====================
      Rid W=1 warnings in Ethernet
      
      This set is part of a larger effort attempting to clean-up W=1
      kernel builds, which are currently overwhelmingly riddled with
      niggly little warnings.
      
      v2:
       - Squashed IBM patches
       - Fixed real issue in SMSC
       - Added Andrew's Reviewed-by tags on remainder
      ====================
      
      Link: https://lore.kernel.org/r/20210115200905.3470941-1-lee.jones@linaro.orgSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      c761b2df
    • Lee Jones's avatar
      net: ethernet: toshiba: spider_net: Document a whole bunch of function parameters · e242d598
      Lee Jones authored
      Fixes the following W=1 kernel build warning(s):
      
       drivers/net/ethernet/toshiba/spider_net.c:263: warning: Function parameter or member 'hwdescr' not described in 'spider_net_get_descr_status'
       drivers/net/ethernet/toshiba/spider_net.c:263: warning: Excess function parameter 'descr' description in 'spider_net_get_descr_status'
       drivers/net/ethernet/toshiba/spider_net.c:554: warning: Function parameter or member 'netdev' not described in 'spider_net_get_multicast_hash'
       drivers/net/ethernet/toshiba/spider_net.c:902: warning: Function parameter or member 't' not described in 'spider_net_cleanup_tx_ring'
       drivers/net/ethernet/toshiba/spider_net.c:902: warning: Excess function parameter 'card' description in 'spider_net_cleanup_tx_ring'
       drivers/net/ethernet/toshiba/spider_net.c:1074: warning: Function parameter or member 'card' not described in 'spider_net_resync_head_ptr'
       drivers/net/ethernet/toshiba/spider_net.c:1234: warning: Function parameter or member 'napi' not described in 'spider_net_poll'
       drivers/net/ethernet/toshiba/spider_net.c:1234: warning: Excess function parameter 'netdev' description in 'spider_net_poll'
       drivers/net/ethernet/toshiba/spider_net.c:1278: warning: Function parameter or member 'p' not described in 'spider_net_set_mac'
       drivers/net/ethernet/toshiba/spider_net.c:1278: warning: Excess function parameter 'ptr' description in 'spider_net_set_mac'
       drivers/net/ethernet/toshiba/spider_net.c:1350: warning: Function parameter or member 'error_reg1' not described in 'spider_net_handle_error_irq'
       drivers/net/ethernet/toshiba/spider_net.c:1350: warning: Function parameter or member 'error_reg2' not described in 'spider_net_handle_error_irq'
       drivers/net/ethernet/toshiba/spider_net.c:1968: warning: Function parameter or member 't' not described in 'spider_net_link_phy'
       drivers/net/ethernet/toshiba/spider_net.c:1968: warning: Excess function parameter 'data' description in 'spider_net_link_phy'
       drivers/net/ethernet/toshiba/spider_net.c:2149: warning: Function parameter or member 'work' not described in 'spider_net_tx_timeout_task'
       drivers/net/ethernet/toshiba/spider_net.c:2149: warning: Excess function parameter 'data' description in 'spider_net_tx_timeout_task'
       drivers/net/ethernet/toshiba/spider_net.c:2182: warning: Function parameter or member 'txqueue' not described in 'spider_net_tx_timeout'
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      e242d598
    • Lee Jones's avatar
      net: ethernet: toshiba: ps3_gelic_net: Fix some kernel-doc misdemeanours · b5103632
      Lee Jones authored
      Fixes the following W=1 kernel build warning(s):
      
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1107: warning: Function parameter or member 'irq' not described in 'gelic_card_interrupt'
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1107: warning: Function parameter or member 'ptr' not described in 'gelic_card_interrupt'
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1407: warning: Function parameter or member 'txqueue' not described in 'gelic_net_tx_timeout'
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1439: warning: Function parameter or member 'napi' not described in 'gelic_ether_setup_netdev_ops'
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1639: warning: Function parameter or member 'dev' not described in 'ps3_gelic_driver_probe'
       drivers/net/ethernet/toshiba/ps3_gelic_net.c:1795: warning: Function parameter or member 'dev' not described in 'ps3_gelic_driver_remove'
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      b5103632
    • Lee Jones's avatar
      net: ethernet: ibm: ibmvnic: Fix some kernel-doc misdemeanours · 80708602
      Lee Jones authored
      Fixes the following W=1 kernel build warning(s):
      
       from drivers/net/ethernet/ibm/ibmvnic.c:35:
       inlined from ‘handle_vpd_rsp’ at drivers/net/ethernet/ibm/ibmvnic.c:4124:3:
       drivers/net/ethernet/ibm/ibmvnic.c:1362: warning: Function parameter or member 'hdr_field' not described in 'build_hdr_data'
       drivers/net/ethernet/ibm/ibmvnic.c:1362: warning: Function parameter or member 'skb' not described in 'build_hdr_data'
       drivers/net/ethernet/ibm/ibmvnic.c:1362: warning: Function parameter or member 'hdr_len' not described in 'build_hdr_data'
       drivers/net/ethernet/ibm/ibmvnic.c:1362: warning: Function parameter or member 'hdr_data' not described in 'build_hdr_data'
       drivers/net/ethernet/ibm/ibmvnic.c:1423: warning: Function parameter or member 'hdr_field' not described in 'create_hdr_descs'
       drivers/net/ethernet/ibm/ibmvnic.c:1423: warning: Function parameter or member 'hdr_data' not described in 'create_hdr_descs'
       drivers/net/ethernet/ibm/ibmvnic.c:1423: warning: Function parameter or member 'len' not described in 'create_hdr_descs'
       drivers/net/ethernet/ibm/ibmvnic.c:1423: warning: Function parameter or member 'hdr_len' not described in 'create_hdr_descs'
       drivers/net/ethernet/ibm/ibmvnic.c:1423: warning: Function parameter or member 'scrq_arr' not described in 'create_hdr_descs'
       drivers/net/ethernet/ibm/ibmvnic.c:1474: warning: Function parameter or member 'txbuff' not described in 'build_hdr_descs_arr'
       drivers/net/ethernet/ibm/ibmvnic.c:1474: warning: Function parameter or member 'num_entries' not described in 'build_hdr_descs_arr'
       drivers/net/ethernet/ibm/ibmvnic.c:1474: warning: Function parameter or member 'hdr_field' not described in 'build_hdr_descs_arr'
       drivers/net/ethernet/ibm/ibmvnic.c:1832: warning: Function parameter or member 'adapter' not described in 'do_change_param_reset'
       drivers/net/ethernet/ibm/ibmvnic.c:1832: warning: Function parameter or member 'rwi' not described in 'do_change_param_reset'
       drivers/net/ethernet/ibm/ibmvnic.c:1832: warning: Function parameter or member 'reset_state' not described in 'do_change_param_reset'
       drivers/net/ethernet/ibm/ibmvnic.c:1911: warning: Function parameter or member 'adapter' not described in 'do_reset'
       drivers/net/ethernet/ibm/ibmvnic.c:1911: warning: Function parameter or member 'rwi' not described in 'do_reset'
       drivers/net/ethernet/ibm/ibmvnic.c:1911: warning: Function parameter or member 'reset_state' not described in 'do_reset'
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      80708602
    • Lee Jones's avatar
      net: ethernet: ti: am65-cpts: Document am65_cpts_rx_enable()'s 'en' parameter · e49e4647
      Lee Jones authored
      Fixes the following W=1 kernel build warning(s):
      
       drivers/net/ethernet/ti/am65-cpts.c:736: warning: Function parameter or member 'en' not described in 'am65_cpts_rx_enable'
       drivers/net/ethernet/ti/am65-cpts.c:736: warning: Excess function parameter 'skb' description in 'am65_cpts_rx_enable'
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      e49e4647
    • Lee Jones's avatar
      net: ethernet: ti: am65-cpsw-qos: Demote non-conformant function header · 935888cd
      Lee Jones authored
      Fixes the following W=1 kernel build warning(s):
      
       drivers/net/ethernet/ti/am65-cpsw-qos.c:364: warning: Function parameter or member 'ndev' not described in 'am65_cpsw_timer_set'
       drivers/net/ethernet/ti/am65-cpsw-qos.c:364: warning: Function parameter or member 'est_new' not described in 'am65_cpsw_timer_set'
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      935888cd