linux - The Linux Kernel

Age	Commit message (Collapse)	Author	Files	Lines
2023-01-15	samples/bpf: use vmlinux.h instead of implicit headers in BPF test program	Daniel T. Lee	1	-10/+1
	This commit applies vmlinux.h to BPF functionality testing program. Macros that were not defined despite migration to "vmlinux.h" were defined separately in individual files. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-10-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-01-15	samples/bpf: replace BPF programs header with net_shared.h	Daniel T. Lee	1	-1/+2
	This commit applies "net_shared.h" to BPF programs to remove existing network related header dependencies. Also, this commit removes unnecessary headers before applying "vmlinux.h" to the BPF programs. Mostly, endianness conversion function has been applied to the source. In addition, several macros have been defined to fulfill the INET, TC-related constants. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-9-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-01-15	samples/bpf: fix broken lightweight tunnel testing	Daniel T. Lee	1	-18/+18
	The test_lwt_bpf is a script that tests the functionality of BPF through the output of the ftrace with bpf_trace_printk. Currently, this program is not operating normally for several reasons. First of all, this test script can't parse the ftrace results properly. GNU sed tries to be as greedy as possible when attempting pattern matching. Due to this, cutting metadata (such as timestamp) from the log entry of ftrace doesn't work properly, and also desired log isn't extracted properly. To make sed stripping clearer, 'nocontext-info' option with the ftrace has been used to remove metadata from the log. Also, instead of using unclear pattern matching, this commit specifies an explicit parse pattern. Also, unlike before when this test was introduced, the way bpf_trace_printk behaves has changed[1]. The previous bpf_trace_printk had to always have '\n' in order to print newline, but now that the bpf_trace_printk call includes newline by default, so '\n' is no longer needed. Lastly with the lwt ENCAP_BPF out, the context information with the sk_buff protocol is preserved. Therefore, this commit changes the previous test result from 'protocol 0' to 'protocol 8', which means ETH_P_IP. [1]: commit ac5a72ea5c89 ("bpf: Use dedicated bpf_trace_printk event instead of trace_printk()") Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-4-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2020-01-20	samples/bpf: Use consistent include paths for libbpf	Toke Høiland-Jørgensen	1	-1/+1
	Fix all files in samples/bpf to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To make sure no new files are introduced that doesn't include the bpf/ prefix in its include, remove tools/lib/bpf from the include path entirely, and use tools/lib instead. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
2016-12-02	bpf: Add tests and samples for LWT-BPF	Thomas Graf	1	-0/+253
	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 <tgraf@suug.ch> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>