Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
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/* Copyright (c) 2016 PLUMgrid
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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 <linux/bpf.h>
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2017-04-27 19:11:13 +03:00
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#include <linux/if_link.h>
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Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
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#include <assert.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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2017-04-27 19:11:13 +03:00
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#include <libgen.h>
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2017-10-28 02:12:30 +03:00
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#include <sys/resource.h>
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bpf: fix multiple issues in selftest suite and samples
1) The test_lru_map and test_lru_dist fails building on my machine since
the sys/resource.h header is not included.
2) test_verifier fails in one test case where we try to call an invalid
function, since the verifier log output changed wrt printing function
names.
3) Current selftest suite code relies on sysconf(_SC_NPROCESSORS_CONF) for
retrieving the number of possible CPUs. This is broken at least in our
scenario and really just doesn't work.
glibc tries a number of things for retrieving _SC_NPROCESSORS_CONF.
First it tries equivalent of /sys/devices/system/cpu/cpu[0-9]* | wc -l,
if that fails, depending on the config, it either tries to count CPUs
in /proc/cpuinfo, or returns the _SC_NPROCESSORS_ONLN value instead.
If /proc/cpuinfo has some issue, it returns just 1 worst case. This
oddity is nothing new [1], but semantics/behaviour seems to be settled.
_SC_NPROCESSORS_ONLN will parse /sys/devices/system/cpu/online, if
that fails it looks into /proc/stat for cpuX entries, and if also that
fails for some reason, /proc/cpuinfo is consulted (and returning 1 if
unlikely all breaks down).
While that might match num_possible_cpus() from the kernel in some
cases, it's really not guaranteed with CPU hotplugging, and can result
in a buffer overflow since the array in user space could have too few
number of slots, and on perpcu map lookup, the kernel will write beyond
that memory of the value buffer.
William Tu reported such mismatches:
[...] The fact that sysconf(_SC_NPROCESSORS_CONF) != num_possible_cpu()
happens when CPU hotadd is enabled. For example, in Fusion when
setting vcpu.hotadd = "TRUE" or in KVM, setting ./qemu-system-x86_64
-smp 2, maxcpus=4 ... the num_possible_cpu() will be 4 and sysconf()
will be 2 [2]. [...]
Documentation/cputopology.txt says /sys/devices/system/cpu/possible
outputs cpu_possible_mask. That is the same as in num_possible_cpus(),
so first step would be to fix the _SC_NPROCESSORS_CONF calls with our
own implementation. Later, we could add support to bpf(2) for passing
a mask via CPU_SET(3), for example, to just select a subset of CPUs.
BPF samples code needs this fix as well (at least so that people stop
copying this). Thus, define bpf_num_possible_cpus() once in selftests
and import it from there for the sample code to avoid duplicating it.
The remaining sysconf(_SC_NPROCESSORS_CONF) in samples are unrelated.
After all three issues are fixed, the test suite runs fine again:
# make run_tests | grep self
selftests: test_verifier [PASS]
selftests: test_maps [PASS]
selftests: test_lru_map [PASS]
selftests: test_kmod.sh [PASS]
[1] https://www.sourceware.org/ml/libc-alpha/2011-06/msg00079.html
[2] https://www.mail-archive.com/netdev@vger.kernel.org/msg121183.html
Fixes: 3059303f59cf ("samples/bpf: update tracex[23] examples to use per-cpu maps")
Fixes: 86af8b4191d2 ("Add sample for adding simple drop program to link")
Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY")
Fixes: e15596717948 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_HASH")
Fixes: ebb676daa1a3 ("bpf: Print function name in addition to function id")
Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: William Tu <u9012063@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-26 03:28:09 +03:00
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#include "bpf_util.h"
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2018-05-10 20:24:43 +03:00
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#include "bpf/bpf.h"
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#include "bpf/libbpf.h"
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Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
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static int ifindex;
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2017-05-01 12:26:15 +03:00
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static __u32 xdp_flags;
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Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
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static void int_exit(int sig)
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{
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2018-01-30 23:55:04 +03:00
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bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
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Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
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exit(0);
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}
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/* simple per-protocol drop counter
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*/
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2018-05-10 20:24:43 +03:00
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static void poll_stats(int map_fd, int interval)
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Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
{
|
bpf: fix multiple issues in selftest suite and samples
1) The test_lru_map and test_lru_dist fails building on my machine since
the sys/resource.h header is not included.
2) test_verifier fails in one test case where we try to call an invalid
function, since the verifier log output changed wrt printing function
names.
3) Current selftest suite code relies on sysconf(_SC_NPROCESSORS_CONF) for
retrieving the number of possible CPUs. This is broken at least in our
scenario and really just doesn't work.
glibc tries a number of things for retrieving _SC_NPROCESSORS_CONF.
First it tries equivalent of /sys/devices/system/cpu/cpu[0-9]* | wc -l,
if that fails, depending on the config, it either tries to count CPUs
in /proc/cpuinfo, or returns the _SC_NPROCESSORS_ONLN value instead.
If /proc/cpuinfo has some issue, it returns just 1 worst case. This
oddity is nothing new [1], but semantics/behaviour seems to be settled.
_SC_NPROCESSORS_ONLN will parse /sys/devices/system/cpu/online, if
that fails it looks into /proc/stat for cpuX entries, and if also that
fails for some reason, /proc/cpuinfo is consulted (and returning 1 if
unlikely all breaks down).
While that might match num_possible_cpus() from the kernel in some
cases, it's really not guaranteed with CPU hotplugging, and can result
in a buffer overflow since the array in user space could have too few
number of slots, and on perpcu map lookup, the kernel will write beyond
that memory of the value buffer.
William Tu reported such mismatches:
[...] The fact that sysconf(_SC_NPROCESSORS_CONF) != num_possible_cpu()
happens when CPU hotadd is enabled. For example, in Fusion when
setting vcpu.hotadd = "TRUE" or in KVM, setting ./qemu-system-x86_64
-smp 2, maxcpus=4 ... the num_possible_cpu() will be 4 and sysconf()
will be 2 [2]. [...]
Documentation/cputopology.txt says /sys/devices/system/cpu/possible
outputs cpu_possible_mask. That is the same as in num_possible_cpus(),
so first step would be to fix the _SC_NPROCESSORS_CONF calls with our
own implementation. Later, we could add support to bpf(2) for passing
a mask via CPU_SET(3), for example, to just select a subset of CPUs.
BPF samples code needs this fix as well (at least so that people stop
copying this). Thus, define bpf_num_possible_cpus() once in selftests
and import it from there for the sample code to avoid duplicating it.
The remaining sysconf(_SC_NPROCESSORS_CONF) in samples are unrelated.
After all three issues are fixed, the test suite runs fine again:
# make run_tests | grep self
selftests: test_verifier [PASS]
selftests: test_maps [PASS]
selftests: test_lru_map [PASS]
selftests: test_kmod.sh [PASS]
[1] https://www.sourceware.org/ml/libc-alpha/2011-06/msg00079.html
[2] https://www.mail-archive.com/netdev@vger.kernel.org/msg121183.html
Fixes: 3059303f59cf ("samples/bpf: update tracex[23] examples to use per-cpu maps")
Fixes: 86af8b4191d2 ("Add sample for adding simple drop program to link")
Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY")
Fixes: e15596717948 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_HASH")
Fixes: ebb676daa1a3 ("bpf: Print function name in addition to function id")
Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: William Tu <u9012063@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-26 03:28:09 +03:00
|
|
|
unsigned int nr_cpus = bpf_num_possible_cpus();
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
const unsigned int nr_keys = 256;
|
|
|
|
__u64 values[nr_cpus], prev[nr_keys][nr_cpus];
|
|
|
|
__u32 key;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
memset(prev, 0, sizeof(prev));
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
sleep(interval);
|
|
|
|
|
|
|
|
for (key = 0; key < nr_keys; key++) {
|
|
|
|
__u64 sum = 0;
|
|
|
|
|
2018-05-10 20:24:43 +03:00
|
|
|
assert(bpf_map_lookup_elem(map_fd, &key, values) == 0);
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
for (i = 0; i < nr_cpus; i++)
|
|
|
|
sum += (values[i] - prev[key][i]);
|
|
|
|
if (sum)
|
|
|
|
printf("proto %u: %10llu pkt/s\n",
|
|
|
|
key, sum / interval);
|
|
|
|
memcpy(prev[key], values, sizeof(values));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-04-27 19:11:13 +03:00
|
|
|
static void usage(const char *prog)
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
{
|
2017-04-27 19:11:13 +03:00
|
|
|
fprintf(stderr,
|
|
|
|
"usage: %s [OPTS] IFINDEX\n\n"
|
|
|
|
"OPTS:\n"
|
2017-05-12 02:04:45 +03:00
|
|
|
" -S use skb-mode\n"
|
|
|
|
" -N enforce native mode\n",
|
2017-04-27 19:11:13 +03:00
|
|
|
prog);
|
|
|
|
}
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2017-04-27 19:11:13 +03:00
|
|
|
int main(int argc, char **argv)
|
|
|
|
{
|
2017-10-28 02:12:30 +03:00
|
|
|
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
|
2018-05-10 20:24:43 +03:00
|
|
|
struct bpf_prog_load_attr prog_load_attr = {
|
|
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
|
|
};
|
2017-05-12 02:04:45 +03:00
|
|
|
const char *optstr = "SN";
|
2018-05-10 20:24:43 +03:00
|
|
|
int prog_fd, map_fd, opt;
|
|
|
|
struct bpf_object *obj;
|
|
|
|
struct bpf_map *map;
|
2017-04-27 19:11:13 +03:00
|
|
|
char filename[256];
|
|
|
|
|
|
|
|
while ((opt = getopt(argc, argv, optstr)) != -1) {
|
|
|
|
switch (opt) {
|
|
|
|
case 'S':
|
2017-05-01 12:26:15 +03:00
|
|
|
xdp_flags |= XDP_FLAGS_SKB_MODE;
|
2017-04-27 19:11:13 +03:00
|
|
|
break;
|
2017-05-12 02:04:45 +03:00
|
|
|
case 'N':
|
|
|
|
xdp_flags |= XDP_FLAGS_DRV_MODE;
|
|
|
|
break;
|
2017-04-27 19:11:13 +03:00
|
|
|
default:
|
|
|
|
usage(basename(argv[0]));
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2017-04-27 19:11:13 +03:00
|
|
|
if (optind == argc) {
|
|
|
|
usage(basename(argv[0]));
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
return 1;
|
|
|
|
}
|
2017-10-28 02:12:30 +03:00
|
|
|
|
|
|
|
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
|
|
|
|
perror("setrlimit(RLIMIT_MEMLOCK)");
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2017-04-27 19:11:13 +03:00
|
|
|
ifindex = strtoul(argv[optind], NULL, 0);
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2017-04-27 19:11:13 +03:00
|
|
|
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
|
2018-05-10 20:24:43 +03:00
|
|
|
prog_load_attr.file = filename;
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2018-05-10 20:24:43 +03:00
|
|
|
if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
map = bpf_map__next(NULL, obj);
|
|
|
|
if (!map) {
|
|
|
|
printf("finding a map in obj file failed\n");
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
return 1;
|
|
|
|
}
|
2018-05-10 20:24:43 +03:00
|
|
|
map_fd = bpf_map__fd(map);
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2018-05-10 20:24:43 +03:00
|
|
|
if (!prog_fd) {
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
printf("load_bpf_file: %s\n", strerror(errno));
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
signal(SIGINT, int_exit);
|
2017-05-11 22:52:30 +03:00
|
|
|
signal(SIGTERM, int_exit);
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
2018-05-10 20:24:43 +03:00
|
|
|
if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
printf("link set xdp fd failed\n");
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2018-05-10 20:24:43 +03:00
|
|
|
poll_stats(map_fd, 2);
|
Add sample for adding simple drop program to link
Add a sample program that only drops packets at the BPF_PROG_TYPE_XDP_RX
hook of a link. With the drop-only program, observed single core rate is
~20Mpps.
Other tests were run, for instance without the dropcnt increment or
without reading from the packet header, the packet rate was mostly
unchanged.
$ perf record -a samples/bpf/xdp1 $(</sys/class/net/eth0/ifindex)
proto 17: 20403027 drops/s
./pktgen_sample03_burst_single_flow.sh -i $DEV -d $IP -m $MAC -t 4
Running... ctrl^C to stop
Device: eth4@0
Result: OK: 11791017(c11788327+d2689) usec, 59622913 (60byte,0frags)
5056638pps 2427Mb/sec (2427186240bps) errors: 0
Device: eth4@1
Result: OK: 11791012(c11787906+d3106) usec, 60526944 (60byte,0frags)
5133311pps 2463Mb/sec (2463989280bps) errors: 0
Device: eth4@2
Result: OK: 11791019(c11788249+d2769) usec, 59868091 (60byte,0frags)
5077431pps 2437Mb/sec (2437166880bps) errors: 0
Device: eth4@3
Result: OK: 11795039(c11792403+d2636) usec, 59483181 (60byte,0frags)
5043067pps 2420Mb/sec (2420672160bps) errors: 0
perf report --no-children:
26.05% ksoftirqd/0 [mlx4_en] [k] mlx4_en_process_rx_cq
17.84% ksoftirqd/0 [mlx4_en] [k] mlx4_en_alloc_frags
5.52% ksoftirqd/0 [mlx4_en] [k] mlx4_en_free_frag
4.90% swapper [kernel.vmlinux] [k] poll_idle
4.14% ksoftirqd/0 [kernel.vmlinux] [k] get_page_from_freelist
2.78% ksoftirqd/0 [kernel.vmlinux] [k] __free_pages_ok
2.57% ksoftirqd/0 [kernel.vmlinux] [k] bpf_map_lookup_elem
2.51% swapper [mlx4_en] [k] mlx4_en_process_rx_cq
1.94% ksoftirqd/0 [kernel.vmlinux] [k] percpu_array_map_lookup_elem
1.45% swapper [mlx4_en] [k] mlx4_en_alloc_frags
1.35% ksoftirqd/0 [kernel.vmlinux] [k] free_one_page
1.33% swapper [kernel.vmlinux] [k] intel_idle
1.04% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5c5
0.96% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c58d
0.93% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6ee
0.92% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c6b9
0.89% ksoftirqd/0 [kernel.vmlinux] [k] __alloc_pages_nodemask
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c686
0.83% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5d5
0.78% ksoftirqd/0 [mlx4_en] [k] mlx4_alloc_pages.isra.23
0.77% ksoftirqd/0 [mlx4_en] [k] 0x000000000001c5b4
0.77% ksoftirqd/0 [kernel.vmlinux] [k] net_rx_action
machine specs:
receiver - Intel E5-1630 v3 @ 3.70GHz
sender - Intel E5645 @ 2.40GHz
Mellanox ConnectX-3 @40G
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-19 22:16:51 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|