#!/bin/bash #modprobe pktgen function pgset() { local result echo $1 > $PGDEV result=`cat $PGDEV | fgrep "Result: OK:"` if [ "$result" = "" ]; then cat $PGDEV | fgrep Result: fi } # Config Start Here ----------------------------------------------------------- # thread config # One CPU means one thread. One CPU example. We add eth1, eth2 respectivly. PGDEV=/proc/net/pktgen/kpktgend_0 echo "Removing all devices" pgset "rem_device_all" echo "Adding eth1" pgset "add_device eth1" echo "Adding eth2" pgset "add_device eth2" # device config # delay 0 means maximum speed. CLONE_SKB="clone_skb 1000000" # NIC adds 4 bytes CRC PKT_SIZE="pkt_size 60" # COUNT 0 means forever #COUNT="count 0" COUNT="count 10000000" DELAY="delay 0" PGDEV=/proc/net/pktgen/eth1 echo "Configuring $PGDEV" pgset "$COUNT" pgset "$CLONE_SKB" pgset "$PKT_SIZE" pgset "$DELAY" pgset "dst 10.10.11.2" pgset "dst_mac 00:04:23:08:91:dc" PGDEV=/proc/net/pktgen/eth2 echo "Configuring $PGDEV" pgset "$COUNT" pgset "$CLONE_SKB" pgset "$PKT_SIZE" pgset "$DELAY" pgset "dst 192.168.2.2" pgset "dst_mac 00:04:23:08:91:de" # Time to run PGDEV=/proc/net/pktgen/pgctrl echo "Running... ctrl^C to stop" trap true INT pgset "start" echo "Done" cat /proc/net/pktgen/eth1 /proc/net/pktgen/eth2 lue='packet-rx-pump-back'>packet-rx-pump-back net-next plumbingsTobias Klauser
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /net/phonet/af_phonet.c
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'net/phonet/af_phonet.c')