1. 22 Oct, 2019 28 commits
  2. 20 Oct, 2019 10 commits
  3. 19 Oct, 2019 2 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 531e93d1
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "I was battling a cold after some recent trips, so quite a bit piled up
        meanwhile, sorry about that.
      
        Highlights:
      
         1) Fix fd leak in various bpf selftests, from Brian Vazquez.
      
         2) Fix crash in xsk when device doesn't support some methods, from
            Magnus Karlsson.
      
         3) Fix various leaks and use-after-free in rxrpc, from David Howells.
      
         4) Fix several SKB leaks due to confusion of who owns an SKB and who
            should release it in the llc code. From Eric Biggers.
      
         5) Kill a bunc of KCSAN warnings in TCP, from Eric Dumazet.
      
         6) Jumbo packets don't work after resume on r8169, as the BIOS resets
            the chip into non-jumbo mode during suspend. From Heiner Kallweit.
      
         7) Corrupt L2 header during MPLS push, from Davide Caratti.
      
         8) Prevent possible infinite loop in tc_ctl_action, from Eric
            Dumazet.
      
         9) Get register bits right in bcmgenet driver, based upon chip
            version. From Florian Fainelli.
      
        10) Fix mutex problems in microchip DSA driver, from Marek Vasut.
      
        11) Cure race between route lookup and invalidation in ipv4, from Wei
            Wang.
      
        12) Fix performance regression due to false sharing in 'net'
            structure, from Eric Dumazet"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (145 commits)
        net: reorder 'struct net' fields to avoid false sharing
        net: dsa: fix switch tree list
        net: ethernet: dwmac-sun8i: show message only when switching to promisc
        net: aquantia: add an error handling in aq_nic_set_multicast_list
        net: netem: correct the parent's backlog when corrupted packet was dropped
        net: netem: fix error path for corrupted GSO frames
        macb: propagate errors when getting optional clocks
        xen/netback: fix error path of xenvif_connect_data()
        net: hns3: fix mis-counting IRQ vector numbers issue
        net: usb: lan78xx: Connect PHY before registering MAC
        vsock/virtio: discard packets if credit is not respected
        vsock/virtio: send a credit update when buffer size is changed
        mlxsw: spectrum_trap: Push Ethernet header before reporting trap
        net: ensure correct skb->tstamp in various fragmenters
        net: bcmgenet: reset 40nm EPHY on energy detect
        net: bcmgenet: soft reset 40nm EPHYs before MAC init
        net: phy: bcm7xxx: define soft_reset for 40nm EPHY
        net: bcmgenet: don't set phydev->link from MAC
        net: Update address for MediaTek ethernet driver in MAINTAINERS
        ipv4: fix race condition between route lookup and invalidation
        ...
      531e93d1
    • Eric Dumazet's avatar
      net: reorder 'struct net' fields to avoid false sharing · 2a06b898
      Eric Dumazet authored
      Intel test robot reported a ~7% regression on TCP_CRR tests
      that they bisected to the cited commit.
      
      Indeed, every time a new TCP socket is created or deleted,
      the atomic counter net->count is touched (via get_net(net)
      and put_net(net) calls)
      
      So cpus might have to reload a contended cache line in
      net_hash_mix(net) calls.
      
      We need to reorder 'struct net' fields to move @hash_mix
      in a read mostly cache line.
      
      We move in the first cache line fields that can be
      dirtied often.
      
      We probably will have to address in a followup patch
      the __randomize_layout that was added in linux-4.13,
      since this might break our placement choices.
      
      Fixes: 355b9855 ("netns: provide pure entropy for net_hash_mix()")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarkernel test robot <oliver.sang@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2a06b898