linux-dev/samples/bpf/bpf_helpers.h, branch linus/master

samples/bpf: fix a build issue

2017-07-12T03:51:29Z

With latest net-next: ==== clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~~~~~~~~~~~~~ 1 error generated. ==== net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h. Also move bpf_helpers.h from samples/bpf to selftests/bpf and change compiler include logic so that programs in samples/bpf can access the headers in selftests/bpf, but not the other way around. Signed-off-by: Yonghong Song Acked-by: Daniel Borkmann Acked-by: Lawrence Brakmo Signed-off-by: David S. Miller

bpf: Add setsockopt helper function to bpf

2017-07-01T23:15:13Z

Added support for calling a subset of socket setsockopts from BPF_PROG_TYPE_SOCK_OPS programs. The code was duplicated rather than making the changes to call the socket setsockopt function because the changes required would have been larger. The ops supported are: SO_RCVBUF SO_SNDBUF SO_MAX_PACING_RATE SO_PRIORITY SO_RCVLOWAT SO_MARK Signed-off-by: Lawrence Brakmo Signed-off-by: David S. Miller

bpf: Add MIPS support to samples/bpf.

2017-06-14T19:03:22Z

Signed-off-by: David Daney Acked-by: Daniel Borkmann Signed-off-by: David S. Miller

samples/bpf: add tests for more perf event types

2017-06-05T01:58:15Z

$ trace_event tests attaching BPF program to HW_CPU_CYCLES, SW_CPU_CLOCK, HW_CACHE_L1D and other events. It runs 'dd' in the background while bpf program collects user and kernel stack trace on counter overflow. User space expects to see sys_read and sys_write in the kernel stack. $ tracex6 tests reading of various perf counters from BPF program. Both tests were refactored to increase coverage and be more accurate. Signed-off-by: Teng Qin Signed-off-by: Alexei Starovoitov Signed-off-by: David S. Miller

bpf: Add sparc support to tools and samples.

2017-04-22T20:01:52Z

Signed-off-by: David S. Miller Acked-by: Daniel Borkmann

bpf: Add tests for map-in-map

2017-03-22T22:45:45Z

Test cases for array of maps and hash of maps. Signed-off-by: Martin KaFai Lau Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller

bpf: xdp: Add XDP example for head adjustment

2016-12-08T19:25:13Z

The XDP prog checks if the incoming packet matches any VIP:PORT combination in the BPF hashmap. If it is, it will encapsulate the packet with a IPv4/v6 header as instructed by the value of the BPF hashmap and then XDP_TX it out. The VIP:PORT -> IP-Encap-Info can be specified by the cmd args of the user prog. Acked-by: Alexei Starovoitov Signed-off-by: Martin KaFai Lau Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-12-03T17:29:53Z

Couple conflicts resolved here: 1) In the MACB driver, a bug fix to properly initialize the RX tail pointer properly overlapped with some changes to support variable sized rings. 2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix overlapping with a reorganization of the driver to support ACPI, OF, as well as PCI variants of the chip. 3) In 'net' we had several probe error path bug fixes to the stmmac driver, meanwhile a lot of this code was cleaned up and reorganized in 'net-next'. 4) The cls_flower classifier obtained a helper function in 'net-next' called __fl_delete() and this overlapped with Daniel Borkamann's bug fix to use RCU for object destruction in 'net'. It also overlapped with Jiri's change to guard the rhashtable_remove_fast() call with a check against tc_skip_sw(). 5) In mlx4, a revert bug fix in 'net' overlapped with some unrelated changes in 'net-next'. 6) In geneve, a stale header pointer after pskb_expand_head() bug fix in 'net' overlapped with a large reorganization of the same code in 'net-next'. Since the 'net-next' code no longer had the bug in question, there was nothing to do other than to simply take the 'net-next' hunks. Signed-off-by: David S. Miller

bpf: Add tests and samples for LWT-BPF

2016-12-02T15:52:00Z

Adds a series of tests to verify the functionality of attaching BPF programs at LWT hooks. Also adds a sample which collects a histogram of packet sizes which pass through an LWT hook. $ ./lwt_len_hist.sh Starting netserver with host 'IN(6)ADDR_ANY' port '12865' and family AF_UNSPEC MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.253.2 () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 39857.69 1 -> 1 : 0 | | 2 -> 3 : 0 | | 4 -> 7 : 0 | | 8 -> 15 : 0 | | 16 -> 31 : 0 | | 32 -> 63 : 22 | | 64 -> 127 : 98 | | 128 -> 255 : 213 | | 256 -> 511 : 1444251 |******** | 512 -> 1023 : 660610 |*** | 1024 -> 2047 : 535241 |** | 2048 -> 4095 : 19 | | 4096 -> 8191 : 180 | | 8192 -> 16383 : 5578023 |************************************* | 16384 -> 32767 : 632099 |*** | 32768 -> 65535 : 6575 | | Signed-off-by: Thomas Graf Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller

bpf/samples: Fix PT_REGS_IP on s390x and use it

2016-11-28T21:26:46Z

The files "sampleip_kern.c" and "trace_event_kern.c" directly access "ctx->regs.ip" which is not available on s390x. Fix this and use the PT_REGS_IP() macro instead. Also fix the macro for s390x and use "psw.addr" from "pt_regs". Reported-by: Zvonko Kosic Signed-off-by: Michael Holzheu Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller