mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-28 10:41:38 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Several cases of bug fixes in 'net' overlapping other changes in 'net-next-. Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David S. Miller
commit
bb598c1b8c
580 changed files with 7286 additions and 4003 deletions
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@ -26,6 +26,7 @@ hostprogs-y += xdp2
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hostprogs-y += test_current_task_under_cgroup
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hostprogs-y += trace_event
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hostprogs-y += sampleip
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hostprogs-y += tc_l2_redirect
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sock_example-objs := sock_example.o libbpf.o
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fds_example-objs := bpf_load.o libbpf.o fds_example.o
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@ -53,6 +54,7 @@ test_current_task_under_cgroup-objs := bpf_load.o libbpf.o \
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test_current_task_under_cgroup_user.o
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trace_event-objs := bpf_load.o libbpf.o trace_event_user.o
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sampleip-objs := bpf_load.o libbpf.o sampleip_user.o
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tc_l2_redirect-objs := bpf_load.o libbpf.o tc_l2_redirect_user.o
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# Tell kbuild to always build the programs
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always := $(hostprogs-y)
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@ -69,6 +71,7 @@ always += test_probe_write_user_kern.o
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always += trace_output_kern.o
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always += tcbpf1_kern.o
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always += tcbpf2_kern.o
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always += tc_l2_redirect_kern.o
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always += lathist_kern.o
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always += offwaketime_kern.o
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always += spintest_kern.o
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@ -108,6 +111,7 @@ HOSTLOADLIBES_xdp2 += -lelf
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HOSTLOADLIBES_test_current_task_under_cgroup += -lelf
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HOSTLOADLIBES_trace_event += -lelf
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HOSTLOADLIBES_sampleip += -lelf
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HOSTLOADLIBES_tc_l2_redirect += -l elf
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# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
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# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
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173
samples/bpf/tc_l2_redirect.sh
Executable file
173
samples/bpf/tc_l2_redirect.sh
Executable file
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@ -0,0 +1,173 @@
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#!/bin/bash
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[[ -z $TC ]] && TC='tc'
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[[ -z $IP ]] && IP='ip'
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REDIRECT_USER='./tc_l2_redirect'
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REDIRECT_BPF='./tc_l2_redirect_kern.o'
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RP_FILTER=$(< /proc/sys/net/ipv4/conf/all/rp_filter)
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IPV6_FORWARDING=$(< /proc/sys/net/ipv6/conf/all/forwarding)
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function config_common {
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local tun_type=$1
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$IP netns add ns1
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$IP netns add ns2
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$IP link add ve1 type veth peer name vens1
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$IP link add ve2 type veth peer name vens2
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$IP link set dev ve1 up
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$IP link set dev ve2 up
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$IP link set dev ve1 mtu 1500
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$IP link set dev ve2 mtu 1500
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$IP link set dev vens1 netns ns1
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$IP link set dev vens2 netns ns2
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$IP -n ns1 link set dev lo up
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$IP -n ns1 link set dev vens1 up
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$IP -n ns1 addr add 10.1.1.101/24 dev vens1
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$IP -n ns1 addr add 2401:db01::65/64 dev vens1 nodad
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$IP -n ns1 route add default via 10.1.1.1 dev vens1
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$IP -n ns1 route add default via 2401:db01::1 dev vens1
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$IP -n ns2 link set dev lo up
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$IP -n ns2 link set dev vens2 up
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$IP -n ns2 addr add 10.2.1.102/24 dev vens2
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$IP -n ns2 addr add 2401:db02::66/64 dev vens2 nodad
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$IP -n ns2 addr add 10.10.1.102 dev lo
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$IP -n ns2 addr add 2401:face::66/64 dev lo nodad
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$IP -n ns2 link add ipt2 type ipip local 10.2.1.102 remote 10.2.1.1
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$IP -n ns2 link add ip6t2 type ip6tnl mode any local 2401:db02::66 remote 2401:db02::1
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$IP -n ns2 link set dev ipt2 up
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$IP -n ns2 link set dev ip6t2 up
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$IP netns exec ns2 $TC qdisc add dev vens2 clsact
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$IP netns exec ns2 $TC filter add dev vens2 ingress bpf da obj $REDIRECT_BPF sec drop_non_tun_vip
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if [[ $tun_type == "ipip" ]]; then
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$IP -n ns2 route add 10.1.1.0/24 dev ipt2
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$IP netns exec ns2 sysctl -q -w net.ipv4.conf.all.rp_filter=0
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$IP netns exec ns2 sysctl -q -w net.ipv4.conf.ipt2.rp_filter=0
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else
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$IP -n ns2 route add 10.1.1.0/24 dev ip6t2
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$IP -n ns2 route add 2401:db01::/64 dev ip6t2
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$IP netns exec ns2 sysctl -q -w net.ipv4.conf.all.rp_filter=0
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$IP netns exec ns2 sysctl -q -w net.ipv4.conf.ip6t2.rp_filter=0
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fi
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$IP addr add 10.1.1.1/24 dev ve1
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$IP addr add 2401:db01::1/64 dev ve1 nodad
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$IP addr add 10.2.1.1/24 dev ve2
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$IP addr add 2401:db02::1/64 dev ve2 nodad
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$TC qdisc add dev ve2 clsact
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$TC filter add dev ve2 ingress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_forward
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sysctl -q -w net.ipv4.conf.all.rp_filter=0
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sysctl -q -w net.ipv6.conf.all.forwarding=1
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}
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function cleanup {
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set +e
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[[ -z $DEBUG ]] || set +x
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$IP netns delete ns1 >& /dev/null
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$IP netns delete ns2 >& /dev/null
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$IP link del ve1 >& /dev/null
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$IP link del ve2 >& /dev/null
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$IP link del ipt >& /dev/null
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$IP link del ip6t >& /dev/null
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sysctl -q -w net.ipv4.conf.all.rp_filter=$RP_FILTER
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sysctl -q -w net.ipv6.conf.all.forwarding=$IPV6_FORWARDING
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rm -f /sys/fs/bpf/tc/globals/tun_iface
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[[ -z $DEBUG ]] || set -x
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set -e
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}
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function l2_to_ipip {
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echo -n "l2_to_ipip $1: "
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local dir=$1
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config_common ipip
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$IP link add ipt type ipip external
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$IP link set dev ipt up
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sysctl -q -w net.ipv4.conf.ipt.rp_filter=0
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sysctl -q -w net.ipv4.conf.ipt.forwarding=1
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if [[ $dir == "egress" ]]; then
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$IP route add 10.10.1.0/24 via 10.2.1.102 dev ve2
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$TC filter add dev ve2 egress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_redirect
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sysctl -q -w net.ipv4.conf.ve1.forwarding=1
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else
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$TC qdisc add dev ve1 clsact
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$TC filter add dev ve1 ingress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_redirect
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fi
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$REDIRECT_USER -U /sys/fs/bpf/tc/globals/tun_iface -i $(< /sys/class/net/ipt/ifindex)
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$IP netns exec ns1 ping -c1 10.10.1.102 >& /dev/null
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if [[ $dir == "egress" ]]; then
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# test direct egress to ve2 (i.e. not forwarding from
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# ve1 to ve2).
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ping -c1 10.10.1.102 >& /dev/null
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fi
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cleanup
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echo "OK"
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}
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function l2_to_ip6tnl {
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echo -n "l2_to_ip6tnl $1: "
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local dir=$1
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config_common ip6tnl
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$IP link add ip6t type ip6tnl mode any external
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$IP link set dev ip6t up
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sysctl -q -w net.ipv4.conf.ip6t.rp_filter=0
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sysctl -q -w net.ipv4.conf.ip6t.forwarding=1
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if [[ $dir == "egress" ]]; then
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$IP route add 10.10.1.0/24 via 10.2.1.102 dev ve2
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$IP route add 2401:face::/64 via 2401:db02::66 dev ve2
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$TC filter add dev ve2 egress bpf da obj $REDIRECT_BPF sec l2_to_ip6tun_ingress_redirect
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sysctl -q -w net.ipv4.conf.ve1.forwarding=1
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else
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$TC qdisc add dev ve1 clsact
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$TC filter add dev ve1 ingress bpf da obj $REDIRECT_BPF sec l2_to_ip6tun_ingress_redirect
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fi
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$REDIRECT_USER -U /sys/fs/bpf/tc/globals/tun_iface -i $(< /sys/class/net/ip6t/ifindex)
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$IP netns exec ns1 ping -c1 10.10.1.102 >& /dev/null
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$IP netns exec ns1 ping -6 -c1 2401:face::66 >& /dev/null
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if [[ $dir == "egress" ]]; then
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# test direct egress to ve2 (i.e. not forwarding from
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# ve1 to ve2).
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ping -c1 10.10.1.102 >& /dev/null
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ping -6 -c1 2401:face::66 >& /dev/null
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fi
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cleanup
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echo "OK"
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}
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cleanup
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test_names="l2_to_ipip l2_to_ip6tnl"
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test_dirs="ingress egress"
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if [[ $# -ge 2 ]]; then
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test_names=$1
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test_dirs=$2
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elif [[ $# -ge 1 ]]; then
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test_names=$1
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fi
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for t in $test_names; do
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for d in $test_dirs; do
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$t $d
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done
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done
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236
samples/bpf/tc_l2_redirect_kern.c
Normal file
236
samples/bpf/tc_l2_redirect_kern.c
Normal file
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@ -0,0 +1,236 @@
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/* Copyright (c) 2016 Facebook
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <uapi/linux/bpf.h>
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#include <uapi/linux/if_ether.h>
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#include <uapi/linux/if_packet.h>
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#include <uapi/linux/ip.h>
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#include <uapi/linux/ipv6.h>
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#include <uapi/linux/in.h>
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#include <uapi/linux/tcp.h>
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#include <uapi/linux/filter.h>
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#include <uapi/linux/pkt_cls.h>
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#include <net/ipv6.h>
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#include "bpf_helpers.h"
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#define _htonl __builtin_bswap32
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#define PIN_GLOBAL_NS 2
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struct bpf_elf_map {
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__u32 type;
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__u32 size_key;
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__u32 size_value;
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__u32 max_elem;
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__u32 flags;
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__u32 id;
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__u32 pinning;
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};
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/* copy of 'struct ethhdr' without __packed */
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struct eth_hdr {
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unsigned char h_dest[ETH_ALEN];
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unsigned char h_source[ETH_ALEN];
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unsigned short h_proto;
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};
|
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||||
struct bpf_elf_map SEC("maps") tun_iface = {
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.type = BPF_MAP_TYPE_ARRAY,
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.size_key = sizeof(int),
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.size_value = sizeof(int),
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||||
.pinning = PIN_GLOBAL_NS,
|
||||
.max_elem = 1,
|
||||
};
|
||||
|
||||
static __always_inline bool is_vip_addr(__be16 eth_proto, __be32 daddr)
|
||||
{
|
||||
if (eth_proto == htons(ETH_P_IP))
|
||||
return (_htonl(0xffffff00) & daddr) == _htonl(0x0a0a0100);
|
||||
else if (eth_proto == htons(ETH_P_IPV6))
|
||||
return (daddr == _htonl(0x2401face));
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
SEC("l2_to_iptun_ingress_forward")
|
||||
int _l2_to_iptun_ingress_forward(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key tkey = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct eth_hdr *eth = data;
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int key = 0, *ifindex;
|
||||
|
||||
int ret;
|
||||
|
||||
if (data + sizeof(*eth) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
ifindex = bpf_map_lookup_elem(&tun_iface, &key);
|
||||
if (!ifindex)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (eth->h_proto == htons(ETH_P_IP)) {
|
||||
char fmt4[] = "ingress forward to ifindex:%d daddr4:%x\n";
|
||||
struct iphdr *iph = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*iph) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (iph->protocol != IPPROTO_IPIP)
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt4, sizeof(fmt4), *ifindex,
|
||||
_htonl(iph->daddr));
|
||||
return bpf_redirect(*ifindex, BPF_F_INGRESS);
|
||||
} else if (eth->h_proto == htons(ETH_P_IPV6)) {
|
||||
char fmt6[] = "ingress forward to ifindex:%d daddr6:%x::%x\n";
|
||||
struct ipv6hdr *ip6h = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*ip6h) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (ip6h->nexthdr != IPPROTO_IPIP &&
|
||||
ip6h->nexthdr != IPPROTO_IPV6)
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt6, sizeof(fmt6), *ifindex,
|
||||
_htonl(ip6h->daddr.s6_addr32[0]),
|
||||
_htonl(ip6h->daddr.s6_addr32[3]));
|
||||
return bpf_redirect(*ifindex, BPF_F_INGRESS);
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("l2_to_iptun_ingress_redirect")
|
||||
int _l2_to_iptun_ingress_redirect(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key tkey = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct eth_hdr *eth = data;
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int key = 0, *ifindex;
|
||||
|
||||
int ret;
|
||||
|
||||
if (data + sizeof(*eth) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
ifindex = bpf_map_lookup_elem(&tun_iface, &key);
|
||||
if (!ifindex)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (eth->h_proto == htons(ETH_P_IP)) {
|
||||
char fmt4[] = "e/ingress redirect daddr4:%x to ifindex:%d\n";
|
||||
struct iphdr *iph = data + sizeof(*eth);
|
||||
__be32 daddr = iph->daddr;
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*iph) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (!is_vip_addr(eth->h_proto, daddr))
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt4, sizeof(fmt4), _htonl(daddr), *ifindex);
|
||||
} else {
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
tkey.tunnel_id = 10000;
|
||||
tkey.tunnel_ttl = 64;
|
||||
tkey.remote_ipv4 = 0x0a020166; /* 10.2.1.102 */
|
||||
bpf_skb_set_tunnel_key(skb, &tkey, sizeof(tkey), 0);
|
||||
return bpf_redirect(*ifindex, 0);
|
||||
}
|
||||
|
||||
SEC("l2_to_ip6tun_ingress_redirect")
|
||||
int _l2_to_ip6tun_ingress_redirect(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key tkey = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct eth_hdr *eth = data;
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int key = 0, *ifindex;
|
||||
|
||||
if (data + sizeof(*eth) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
ifindex = bpf_map_lookup_elem(&tun_iface, &key);
|
||||
if (!ifindex)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (eth->h_proto == htons(ETH_P_IP)) {
|
||||
char fmt4[] = "e/ingress redirect daddr4:%x to ifindex:%d\n";
|
||||
struct iphdr *iph = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*iph) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (!is_vip_addr(eth->h_proto, iph->daddr))
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt4, sizeof(fmt4), _htonl(iph->daddr),
|
||||
*ifindex);
|
||||
} else if (eth->h_proto == htons(ETH_P_IPV6)) {
|
||||
char fmt6[] = "e/ingress redirect daddr6:%x to ifindex:%d\n";
|
||||
struct ipv6hdr *ip6h = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*ip6h) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (!is_vip_addr(eth->h_proto, ip6h->daddr.s6_addr32[0]))
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt6, sizeof(fmt6),
|
||||
_htonl(ip6h->daddr.s6_addr32[0]), *ifindex);
|
||||
} else {
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
tkey.tunnel_id = 10000;
|
||||
tkey.tunnel_ttl = 64;
|
||||
/* 2401:db02:0:0:0:0:0:66 */
|
||||
tkey.remote_ipv6[0] = _htonl(0x2401db02);
|
||||
tkey.remote_ipv6[1] = 0;
|
||||
tkey.remote_ipv6[2] = 0;
|
||||
tkey.remote_ipv6[3] = _htonl(0x00000066);
|
||||
bpf_skb_set_tunnel_key(skb, &tkey, sizeof(tkey), BPF_F_TUNINFO_IPV6);
|
||||
return bpf_redirect(*ifindex, 0);
|
||||
}
|
||||
|
||||
SEC("drop_non_tun_vip")
|
||||
int _drop_non_tun_vip(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key tkey = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct eth_hdr *eth = data;
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
|
||||
if (data + sizeof(*eth) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (eth->h_proto == htons(ETH_P_IP)) {
|
||||
struct iphdr *iph = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*iph) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (is_vip_addr(eth->h_proto, iph->daddr))
|
||||
return TC_ACT_SHOT;
|
||||
} else if (eth->h_proto == htons(ETH_P_IPV6)) {
|
||||
struct ipv6hdr *ip6h = data + sizeof(*eth);
|
||||
|
||||
if (data + sizeof(*eth) + sizeof(*ip6h) > data_end)
|
||||
return TC_ACT_OK;
|
||||
|
||||
if (is_vip_addr(eth->h_proto, ip6h->daddr.s6_addr32[0]))
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
char _license[] SEC("license") = "GPL";
|
||||
73
samples/bpf/tc_l2_redirect_user.c
Normal file
73
samples/bpf/tc_l2_redirect_user.c
Normal file
|
|
@ -0,0 +1,73 @@
|
|||
/* Copyright (c) 2016 Facebook
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of version 2 of the GNU General Public
|
||||
* License as published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/unistd.h>
|
||||
#include <linux/bpf.h>
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include "libbpf.h"
|
||||
|
||||
static void usage(void)
|
||||
{
|
||||
printf("Usage: tc_l2_ipip_redirect [...]\n");
|
||||
printf(" -U <file> Update an already pinned BPF array\n");
|
||||
printf(" -i <ifindex> Interface index\n");
|
||||
printf(" -h Display this help\n");
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
const char *pinned_file = NULL;
|
||||
int ifindex = -1;
|
||||
int array_key = 0;
|
||||
int array_fd = -1;
|
||||
int ret = -1;
|
||||
int opt;
|
||||
|
||||
while ((opt = getopt(argc, argv, "F:U:i:")) != -1) {
|
||||
switch (opt) {
|
||||
/* General args */
|
||||
case 'U':
|
||||
pinned_file = optarg;
|
||||
break;
|
||||
case 'i':
|
||||
ifindex = atoi(optarg);
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (ifindex < 0 || !pinned_file) {
|
||||
usage();
|
||||
goto out;
|
||||
}
|
||||
|
||||
array_fd = bpf_obj_get(pinned_file);
|
||||
if (array_fd < 0) {
|
||||
fprintf(stderr, "bpf_obj_get(%s): %s(%d)\n",
|
||||
pinned_file, strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* bpf_tunnel_key.remote_ipv4 expects host byte orders */
|
||||
ret = bpf_update_elem(array_fd, &array_key, &ifindex, 0);
|
||||
if (ret) {
|
||||
perror("bpf_update_elem");
|
||||
goto out;
|
||||
}
|
||||
|
||||
out:
|
||||
if (array_fd != -1)
|
||||
close(array_fd);
|
||||
return ret;
|
||||
}
|
||||
Loading…
Reference in a new issue