1. 10 Jun, 2015 18 commits
  2. 09 Jun, 2015 3 commits
    • Michael Holzheu's avatar
      s390/bpf: implement bpf_tail_call() helper · 6651ee07
      Michael Holzheu authored
      bpf_tail_call() arguments:
      
       - ctx......: Context pointer
       - jmp_table: One of BPF_MAP_TYPE_PROG_ARRAY maps used as the jump table
       - index....: Index in the jump table
      
      In this implementation s390x JIT does stack unwinding and jumps into the
      callee program prologue. Caller and callee use the same stack.
      
      With this patch a tail call generates the following code on s390x:
      
       if (index >= array->map.max_entries)
               goto out
       000003ff8001c7e4: e31030100016   llgf    %r1,16(%r3)
       000003ff8001c7ea: ec41001fa065   clgrj   %r4,%r1,10,3ff8001c828
      
       if (tail_call_cnt++ > MAX_TAIL_CALL_CNT)
               goto out;
       000003ff8001c7f0: a7080001       lhi     %r0,1
       000003ff8001c7f4: eb10f25000fa   laal    %r1,%r0,592(%r15)
       000003ff8001c7fa: ec120017207f   clij    %r1,32,2,3ff8001c828
      
       prog = array->prog[index];
       if (prog == NULL)
               goto out;
       000003ff8001c800: eb140003000d   sllg    %r1,%r4,3
       000003ff8001c806: e31310800004   lg      %r1,128(%r3,%r1)
       000003ff8001c80c: ec18000e007d   clgij   %r1,0,8,3ff8001c828
      
       Restore registers before calling function
       000003ff8001c812: eb68f2980004   lmg     %r6,%r8,664(%r15)
       000003ff8001c818: ebbff2c00004   lmg     %r11,%r15,704(%r15)
      
       goto *(prog->bpf_func + tail_call_start);
       000003ff8001c81e: e31100200004   lg      %r1,32(%r1,%r0)
       000003ff8001c824: 47f01006       bc      15,6(%r1)
      Reviewed-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
      Acked-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6651ee07
    • David S. Miller's avatar
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 5879ae5f
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix stack allocation in s390 BPF JIT, from Michael Holzheu.
      
       2) Disable LRO on openvswitch paths, from Jiri Benc.
      
       3) UDP early demux doesn't handle multicast group membership properly,
          fix from Shawn Bohrer.
      
       4) Fix TX queue hang due to incorrect handling of mixed sized fragments
          and linearlization in i40e driver, from Anjali Singhai Jain.
      
       5) Cannot use disable_irq() in timer handler of AMD xgbe driver, from
          Thomas Lendacky.
      
       6) b2net driver improperly assumes pci_alloc_consistent() gives zero'd
          out memory, use dma_zalloc_coherent().  From Sriharsha Basavapatna.
      
       7) Fix use-after-free in MPLS and ipv6, from Robert Shearman.
      
       8) Missing neif_napi_del() calls in cleanup paths of b44 driver, from
          Hauke Mehrtens.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        net: replace last open coded skb_orphan_frags with function call
        net: bcmgenet: power on MII block for all MII modes
        ipv6: Fix protocol resubmission
        ipv6: fix possible use after free of dev stats
        b44: call netif_napi_del()
        bridge: disable softirqs around br_fdb_update to avoid lockup
        Revert "bridge: use _bh spinlock variant for br_fdb_update to avoid lockup"
        mpls: fix possible use after free of device
        be2net: Replace dma/pci_alloc_coherent() calls with dma_zalloc_coherent()
        bridge: use _bh spinlock variant for br_fdb_update to avoid lockup
        amd-xgbe: Use disable_irq_nosync from within timer function
        rhashtable: add missing import <linux/export.h>
        i40e: Make sure to be in VEB mode if SRIOV is enabled at probe
        i40e: start up in VEPA mode by default
        i40e/i40evf: Fix mixed size frags and linearization
        ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()
        openvswitch: disable LRO
        s390/bpf: fix bpf frame pointer setup
        s390/bpf: fix stack allocation
      5879ae5f
  3. 08 Jun, 2015 19 commits