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* selftests/bpf: Move ENOTSUPP from bpf_util.hHou Tao2024-11-111-4/+0
| | | | | | | | | | Moving the definition of ENOTSUPP into bpf_util.h to remove the duplicated definitions in multiple files. Signed-off-by: Hou Tao <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]>
* selftests/bpf: Rename fallback in bpf_dctcp to avoid naming conflictPu Lehui2024-09-051-1/+1
| | | | | | | | | | | | | | | | | | | | Recently, when compiling bpf selftests on RV64, the following compilation failure occurred: progs/bpf_dctcp.c:29:21: error: redefinition of 'fallback' as different kind of symbol 29 | volatile const char fallback[TCP_CA_NAME_MAX]; | ^ /workspace/tools/testing/selftests/bpf/tools/include/vmlinux.h:86812:15: note: previous definition is here 86812 | typedef u32 (*fallback)(u32, const unsigned char *, size_t); The reason is that the `fallback` symbol has been defined in arch/riscv/lib/crc32.c, which will cause symbol conflicts when vmlinux.h is included in bpf_dctcp. Let we rename `fallback` string to `fallback_cc` in bpf_dctcp to fix this compilation failure. Signed-off-by: Pu Lehui <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Drop type of connect_to_fd_optsGeliang Tang2024-07-291-1/+1
| | | | | | | | | | | | | | | The "type" parameter of connect_to_fd_opts() is redundant of "server_fd". Since the "type" can be obtained inside by invoking getsockopt(SO_TYPE), without passing it in as a parameter. This patch drops the "type" parameter of connect_to_fd_opts() and updates its callers. Suggested-by: Martin KaFai Lau <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/50d8ce7ab7ab0c0f4d211fc7cc4ebe3d3f63424c.1721282219.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]>
* selftests/bpf: Null checks for links in bpf_tcp_caGeliang Tang2024-07-101-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Run bpf_tcp_ca selftests (./test_progs -t bpf_tcp_ca) on a Loongarch platform, some "Segmentation fault" errors occur: ''' test_dctcp:PASS:bpf_dctcp__open_and_load 0 nsec test_dctcp:FAIL:bpf_map__attach_struct_ops unexpected error: -524 #29/1 bpf_tcp_ca/dctcp:FAIL test_cubic:PASS:bpf_cubic__open_and_load 0 nsec test_cubic:FAIL:bpf_map__attach_struct_ops unexpected error: -524 #29/2 bpf_tcp_ca/cubic:FAIL test_dctcp_fallback:PASS:dctcp_skel 0 nsec test_dctcp_fallback:PASS:bpf_dctcp__load 0 nsec test_dctcp_fallback:FAIL:dctcp link unexpected error: -524 #29/4 bpf_tcp_ca/dctcp_fallback:FAIL test_write_sk_pacing:PASS:open_and_load 0 nsec test_write_sk_pacing:FAIL:attach_struct_ops unexpected error: -524 #29/6 bpf_tcp_ca/write_sk_pacing:FAIL test_update_ca:PASS:open 0 nsec test_update_ca:FAIL:attach_struct_ops unexpected error: -524 settcpca:FAIL:setsockopt unexpected setsockopt: \ actual -1 == expected -1 (network_helpers.c:99: errno: No such file or directory) \ Failed to call post_socket_cb start_test:FAIL:start_server_str unexpected start_server_str: \ actual -1 == expected -1 test_update_ca:FAIL:ca1_ca1_cnt unexpected ca1_ca1_cnt: \ actual 0 <= expected 0 #29/9 bpf_tcp_ca/update_ca:FAIL #29 bpf_tcp_ca:FAIL Caught signal #11! Stack trace: ./test_progs(crash_handler+0x28)[0x5555567ed91c] linux-vdso.so.1(__vdso_rt_sigreturn+0x0)[0x7ffffee408b0] ./test_progs(bpf_link__update_map+0x80)[0x555556824a78] ./test_progs(+0x94d68)[0x5555564c4d68] ./test_progs(test_bpf_tcp_ca+0xe8)[0x5555564c6a88] ./test_progs(+0x3bde54)[0x5555567ede54] ./test_progs(main+0x61c)[0x5555567efd54] /usr/lib64/libc.so.6(+0x22208)[0x7ffff2aaa208] /usr/lib64/libc.so.6(__libc_start_main+0xac)[0x7ffff2aaa30c] ./test_progs(_start+0x48)[0x55555646bca8] Segmentation fault ''' This is because BPF trampoline is not implemented on Loongarch yet, "link" returned by bpf_map__attach_struct_ops() is NULL. test_progs crashs when this NULL link passes to bpf_link__update_map(). This patch adds NULL checks for all links in bpf_tcp_ca to fix these errors. If "link" is NULL, goto the newly added label "out" to destroy the skel. v2: - use "goto out" instead of "return" as Eduard suggested. Fixes: 06da9f3bd641 ("selftests/bpf: Test switching TCP Congestion Control algorithms.") Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Alan Maguire <[email protected]> Link: https://lore.kernel.org/r/b4c841492bd4ed97964e4e61e92827ce51bf1dc9.1720615848.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Test struct_ops bpf map auto-attachMykyta Yatsenko2024-06-211-0/+35
| | | | | | | | | Adding selftest to verify that struct_ops maps are auto attached by bpf skeleton's `*__attach` function. Signed-off-by: Mykyta Yatsenko <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* selftests/bpf: Drop type from network_helper_optsGeliang Tang2024-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The opts.{type, noconnect} is at least a bit non intuitive or unnecessary. The only use case now is in test_bpf_ip_check_defrag_ok which ends up bypassing most (or at least some) of the connect_to_fd_opts() logic. It's much better that test should have its own connect_to_fd_opts() instead. This patch adds a new "type" parameter for connect_to_fd_opts(), then opts->type and getsockopt(SO_TYPE) can be replaced by "type" parameter in it. In connect_to_fd(), use getsockopt(SO_TYPE) to get "type" value and pass it to connect_to_fd_opts(). In bpf_tcp_ca.c and cgroup_v1v2.c, "SOCK_STREAM" types are passed to connect_to_fd_opts(), and in ip_check_defrag.c, different types "SOCK_RAW" and "SOCK_DGRAM" are passed to it. With these changes, the strcut member "type" of network_helper_opts can be dropped now. Acked-by: Eduard Zingerman <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/cfd20b5ad4085c1d1af5e79df3b09013a407199f.1718932493.git.tanggeliang@kylinos.cn Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Drop useless arguments of do_test in bpf_tcp_caGeliang Tang2024-06-061-11/+9
| | | | | | | | | | | | | bpf_map_lookup_elem() has been removed from do_test(), it makes the sk_stg_map argument of do_test() useless. In addition, two exactly the same opts are passed in all the places where do_test() is invoked, so cli_opts argument can be dropped too. This patch drops these two useless arguments of do_test() in bpf_tcp_ca.c. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/7056eab111d78a05bce29d2821228dc93f240de4.1717054461.git.tanggeliang@kylinos.cn
* selftests/bpf: Use start_test in test_dctcp in bpf_tcp_caGeliang Tang2024-06-061-12/+15
| | | | | | | | | | The "if (sk_stg_map)" block in do_test() is only used by test_dctcp(), it makes sense to move it from do_test() into test_dctcp(). Then do_test() can be used by other tests except test_dctcp(). Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/9938916627b9810c877e5c03a621bc0ba5acf5c5.1717054461.git.tanggeliang@kylinos.cn
* selftests/bpf: Use start_test in test_dctcp_fallback in bpf_tcp_caGeliang Tang2024-06-061-11/+9
| | | | | | | | | | | The newly added helper start_test() can be used in test_dctcp_fallback() too, to replace start_server_str() and connect_to_fd_opts(). In that way, two network_helper_opts srv_opts and cli_opts are used instead of the previously shared opts. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/792ca3bb013fa06e618176da02d75e4f79a76733.1717054461.git.tanggeliang@kylinos.cn
* selftests/bpf: Add start_test helper in bpf_tcp_caGeliang Tang2024-06-061-9/+33
| | | | | | | | | | For moving the "if (sk_stg_map)" block out of do_test(), extract the code before this block as a new function start_test(). It creates server-side and client-side sockets and returns them to the caller. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/48f2921ff9be958f5d3d28fe6bb7269a61cafa9f.1717054461.git.tanggeliang@kylinos.cn
* selftests/bpf: Use connect_to_fd_opts in do_test in bpf_tcp_caGeliang Tang2024-06-061-27/+34
| | | | | | | | | | | | | | | | | | This patch uses connect_to_fd_opts() instead of using connect_fd_to_fd() and settcpca() in do_test() in prog_tests/bpf_tcp_ca.c to accept a struct network_helper_opts argument. Then define a dctcp dedicated post_socket_cb callback stg_post_socket_cb(), invoking both settcpca() and bpf_map_update_elem() in it, and set it in test_dctcp(). For passing map_fd into stg_post_socket_cb() callback, a new member map_fd is added in struct cb_opts. Add another "const struct network_helper_opts *cli_opts" to do_test() to separate it from the server "opts". Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/876ec90430865bc468e3b7f6fb2648420b075548.1717054461.git.tanggeliang@kylinos.cn
* selftests/bpf: Use start_server_str in do_test in bpf_tcp_caGeliang Tang2024-05-291-11/+55
| | | | | | | | | | | | | | | This patch uses new helper start_server_str() in do_test() in bpf_tcp_ca.c to accept a struct network_helper_opts argument instead of using start_server() and settcpca(). Then change the type of the first paramenter of do_test() into a struct network_helper_opts one. Define its own cb_opts and opts for each test, set its own cc name into cb_opts.cc, and cc_cb() into post_socket_cb callback, then pass it to do_test(). Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/6e1b6555e3284e77c8aa60668c61a66c5f99aa37.1716638248.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Use post_socket_cb in start_server_strGeliang Tang2024-05-291-3/+6
| | | | | | | | | | | This patch uses start_server_str() helper in test_dctcp_fallback() in bpf_tcp_ca.c, instead of using start_server() and settcpca(). For support opts in start_server_str() helper, opts->cb_opts needs to be passed to post_socket_cb() in __start_server(). Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/414c749321fa150435f7fe8e12c80fec8b447c78.1716638248.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Use post_socket_cb in connect_to_fd_optsGeliang Tang2024-05-291-1/+16
| | | | | | | | | | | | | | | | | Since the post_socket_cb() callback is added in struct network_helper_opts, it's make sense to use it not only in __start_server(), but also in connect_to_fd_opts(). Then it can be used to set TCP_CONGESTION sockopt. Add a "void *" type member cb_opts into struct network_helper_opts, and add a new struct named cb_opts in prog_tests/bpf_tcp_ca.c, then cc can be moved into struct cb_opts from network_helper_opts. Define a new callback cc_cb() to set TCP_CONGESTION sockopt, and set it to post_socket_cb pointer of opts. Define a new cb_opts cubic, set it to cb_opts of opts. Pass this opts to connect_to_fd_opts() in test_dctcp_fallback(). Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/b512bb8d8f6854c9ea5c409b69d1bf37c6f272c6.1716638248.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Add test for the use of new args in cong_controlMiao Xu2024-05-021-0/+24
| | | | | | | | | | This patch adds a selftest to show the usage of the new arguments in cong_control. For simplicity's sake, the testing example reuses cubic's kernel functions. Signed-off-by: Miao Xu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Export send_recv_data helperGeliang Tang2024-04-111-80/+1
| | | | | | | | | | | | This patch extracts the code to send and receive data into a new helper named send_recv_data() in network_helpers.c and export it in network_helpers.h. This helper will be used for MPTCP BPF selftests. Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/5231103be91fadcce3674a589542c63b6a5eedd4.1712813933.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Add struct send_recv_argGeliang Tang2024-04-111-12/+22
| | | | | | | | | | | | Avoid setting total_bytes and stop as global variables, this patch adds a new struct named send_recv_arg to pass arguments between threads. Put these two variables together with fd into this struct and pass it to server thread, so that server thread can access these two variables without setting them as global ones. Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/ca1dd703b796f6810985418373e750f7068b4186.1712813933.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Drop settimeo in do_testGeliang Tang2024-03-291-2/+1
| | | | | | | | | | settimeo is invoked in start_server() and in connect_fd_to_fd() already, no need to invoke settimeo(lfd, 0) and settimeo(fd, 0) in do_test() anymore. This patch drops them. Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/dbc3613bee3b1c78f95ac9ff468bf47c92f106ea.1711447102.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Use connect_fd_to_fd in bpf_tcp_caGeliang Tang2024-03-291-7/+1
| | | | | | | | | | | To simplify the code, use BPF selftests helper connect_fd_to_fd() in bpf_tcp_ca.c instead of open-coding it. This helper is defined in network_helpers.c, and exported in network_helpers.h, which is already included in bpf_tcp_ca.c. Signed-off-by: Geliang Tang <[email protected]> Link: https://lore.kernel.org/r/e105d1f225c643bee838409378dd90fd9aabb6dc.1711447102.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Test loading bpf-tcp-cc prog calling the kernel tcp-cc kfuncsMartin KaFai Lau2024-03-291-0/+12
| | | | | | | | | | | | | This patch adds a test to ensure all static tcp-cc kfuncs is visible to the struct_ops bpf programs. It is checked by successfully loading the struct_ops programs calling these tcp-cc kfuncs. This patch needs to enable the CONFIG_TCP_CONG_DCTCP and the CONFIG_TCP_CONG_BBR. Signed-off-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* bpf: improve error message for unsupported helperMykyta Yatsenko2024-03-291-1/+1
| | | | | | | | | | | | | | | | | BPF verifier emits "unknown func" message when given BPF program type does not support BPF helper. This message may be confusing for users, as important context that helper is unknown only to current program type is not provided. This patch changes message to "program of this type cannot use helper " and aligns dependent code in libbpf and tests. Any suggestions on improving/changing this message are welcome. Signed-off-by: Mykyta Yatsenko <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Acked-by: Quentin Monnet <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Use start_server in bpf_tcp_caGeliang Tang2024-03-251-12/+1
| | | | | | | | | | | To simplify the code, use BPF selftests helper start_server() in bpf_tcp_ca.c instead of open-coding it. This helper is defined in network_helpers.c, and exported in network_helpers.h, which is already included in bpf_tcp_ca.c. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/9926a79118db27dd6d91c4854db011c599cabd0e.1711331517.git.tanggeliang@kylinos.cn
* selftests/bpf: Replaces the usage of CHECK calls for ASSERTs in bpf_tcp_caYuran Pereira2023-11-211-26/+22
| | | | | | | | | | | | bpf_tcp_ca uses the `CHECK` calls even though the use of ASSERT_ series of macros is preferred in the bpf selftests. This patch replaces all `CHECK` calls for equivalent `ASSERT_` macro calls. Signed-off-by: Yuran Pereira <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/GV1PR10MB6563F180C0F2BB4F6CFA5130E8BBA@GV1PR10MB6563.EURPRD10.PROD.OUTLOOK.COM
* selftests/bpf: Check bpf_cubic_acked() is called via struct_opsSong Liu2023-09-191-0/+2
| | | | | | | | | | | | | Test bpf_tcp_ca (in test_progs) checks multiple tcp_congestion_ops. However, there isn't a test that verifies functions in the tcp_congestion_ops is actually called. Add a check to verify that bpf_cubic_acked is actually called during the test. Suggested-by: Martin KaFai Lau <[email protected]> Signed-off-by: Song Liu <[email protected]> Acked-by: Ilya Leoshkevich <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Test switching TCP Congestion Control algorithms.Kui-Feng Lee2023-03-231-0/+160
| | | | | | | | | | | | | | | | | | | | Create a pair of sockets that utilize the congestion control algorithm under a particular name. Then switch up this congestion control algorithm to another implementation and check whether newly created connections using the same cc name now run the new implementation. Also, try to update a link with a struct_ops that is without BPF_F_LINK or with a wrong or different name. These cases should fail due to the violation of assumptions. To update a bpf_link of a struct_ops, it must be replaced with another struct_ops that is identical in type and name and has the BPF_F_LINK flag. The other test case is to create links from the same struct_ops more than once. It makes sure a struct_ops can be used repeatly. Signed-off-by: Kui-Feng Lee <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
* selftests/bpf: Check -EBUSY for the recurred bpf_setsockopt(TCP_CONGESTION)Martin KaFai Lau2022-09-291-0/+4
| | | | | | | | | This patch changes the bpf_dctcp test to ensure the recurred bpf_setsockopt(TCP_CONGESTION) returns -EBUSY. Signed-off-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Test a BPF CC implementing the unsupported get_info()Jörn-Thorben Hinz2022-06-231-0/+20
| | | | | | | | | | | | Test whether a TCP CC implemented in BPF providing get_info() is rejected correctly. get_info() is unsupported in a BPF CC. The check for required functions in a BPF CC has moved, this test ensures unsupported functions are still rejected correctly. Signed-off-by: Jörn-Thorben Hinz <[email protected]> Reviewed-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Test an incomplete BPF CCJörn-Thorben Hinz2022-06-231-0/+22
| | | | | | | | | | | Test whether a TCP CC implemented in BPF providing neither cong_avoid() nor cong_control() is correctly rejected. This check solely depends on tcp_register_congestion_control() now, which is invoked during bpf_map__attach_struct_ops(). Signed-off-by: Jörn-Thorben Hinz <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Test a BPF CC writing sk_pacing_*Jörn-Thorben Hinz2022-06-231-0/+19
| | | | | | | | | | Test whether a TCP CC implemented in BPF is allowed to write sk_pacing_rate and sk_pacing_status in struct sock. This is needed when cong_control() is implemented and used. Signed-off-by: Jörn-Thorben Hinz <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Drop duplicate max/min definitionsGeliang Tang2022-04-111-4/+2
| | | | | | | | | | Drop duplicate macros min() and MAX() definitions in prog_tests and use MIN() or MAX() in sys/param.h instead. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Song Liu <[email protected]> Link: https://lore.kernel.org/bpf/1ae276da9925c2de59b5bdc93b693b4c243e692e.1649462033.git.geliang.tang@suse.com
* selftests/bpf: Fix segfault in bpf_tcp_caJean-Philippe Brucker2021-12-131-4/+3
| | | | | | | | | | | | | Since commit ad9a7f96445b ("libbpf: Improve logging around BPF program loading"), libbpf_debug_print() gets an additional prog_name parameter but doesn't pass it to printf(). Since the format string now expects two arguments, printf() may read uninitialized data and segfault. Pass prog_name through. Fixes: ad9a7f96445b ("libbpf: Improve logging around BPF program loading") Signed-off-by: Jean-Philippe Brucker <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* libbpf: Improve logging around BPF program loadingAndrii Nakryiko2021-12-101-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing "prog '%s': " prefixes in few places and use consistently markers for beginning and end of program load logs. Here's an example of log output: libbpf: prog 'handler': BPF program load failed: Permission denied libbpf: -- BEGIN PROG LOAD LOG --- arg#0 reference type('UNKNOWN ') size cannot be determined: -22 ; out1 = in1; 0: (18) r1 = 0xffffc9000cdcc000 2: (61) r1 = *(u32 *)(r1 +0) ... 81: (63) *(u32 *)(r4 +0) = r5 R1_w=map_value(id=0,off=16,ks=4,vs=20,imm=0) R4=map_value(id=0,off=400,ks=4,vs=16,imm=0) invalid access to map value, value_size=16 off=400 size=4 R4 min value is outside of the allowed memory range processed 63 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0 -- END PROG LOAD LOG -- libbpf: failed to load program 'handler' libbpf: failed to load object 'test_skeleton' The entire verifier log, including BEGIN and END markers are now always youtput during a single print callback call. This should make it much easier to post-process or parse it, if necessary. It's not an explicit API guarantee, but it can be reasonably expected to stay like that. Also __bpf_object__open is renamed to bpf_object_open() as it's always an adventure to find the exact function that implements bpf_object's open phase, so drop the double underscored and use internal libbpf naming convention. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: selftests: Add dctcp fallback testMartin KaFai Lau2021-08-261-23/+83
| | | | | | | | | | | | | | | This patch makes the bpf_dctcp test to fallback to cubic by using setsockopt(TCP_CONGESTION) when the tcp flow is not ecn ready. It also checks setsockopt() is not available to release(). The settimeo() from the network_helpers.h is used, so the local one is removed. Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* selftests/bpf: Turn on libbpf 1.0 mode and fix all IS_ERR checksAndrii Nakryiko2021-05-261-5/+3
| | | | | | | | | | | | | | | | | | | | | Turn ony libbpf 1.0 mode. Fix all the explicit IS_ERR checks that now will be broken because libbpf returns NULL on error (and sets errno). Fix ASSERT_OK_PTR and ASSERT_ERR_PTR to work for both old mode and new modes and use them throughout selftests. This is trivial to do by using libbpf_get_error() API that all libbpf users are supposed to use, instead of IS_ERR checks. A bunch of checks also did explicit -1 comparison for various fd-returning APIs. Such checks are replaced with >= 0 or < 0 cases. There were also few misuses of bpf_object__find_map_by_name() in test_maps. Those are fixed in this patch as well. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: John Fastabend <[email protected]> Acked-by: Toke Høiland-Jørgensen <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf/selftests: Test that kernel rejects a TCP CC with an invalid licenseToke Høiland-Jørgensen2021-03-261-0/+44
| | | | | | | | | | This adds a selftest to check that the verifier rejects a TCP CC struct_ops with a non-GPL license. Signed-off-by: Toke Høiland-Jørgensen <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVEStanislav Fomichev2021-01-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Add custom implementation of getsockopt hook for TCP_ZEROCOPY_RECEIVE. We skip generic hooks for TCP_ZEROCOPY_RECEIVE and have a custom call in do_tcp_getsockopt using the on-stack data. This removes 3% overhead for locking/unlocking the socket. Without this patch: 3.38% 0.07% tcp_mmap [kernel.kallsyms] [k] __cgroup_bpf_run_filter_getsockopt | --3.30%--__cgroup_bpf_run_filter_getsockopt | --0.81%--__kmalloc With the patch applied: 0.52% 0.12% tcp_mmap [kernel.kallsyms] [k] __cgroup_bpf_run_filter_getsockopt_kern Note, exporting uapi/tcp.h requires removing netinet/tcp.h from test_progs.h because those headers have confliciting definitions. Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: Add tests for bpf_sk_storage to bpf_tcp_caMartin KaFai Lau2020-03-231-8/+31
| | | | | | | | | | | | | | | | | This patch adds test to exercise the bpf_sk_storage_get() and bpf_sk_storage_delete() helper from the bpf_dctcp.c. The setup and check on the sk_storage is done immediately before and after the connect(). This patch also takes this chance to move the pthread_create() after the connect() has been done. That will remove the need of the "wait_thread" label. Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: tcp: Add bpf_cubic exampleMartin KaFai Lau2020-01-231-0/+25
| | | | | | | | | | | | | | | This patch adds a bpf_cubic example. Some highlights: 1. CONFIG_HZ .kconfig map is used. 2. In bictcp_update(), calculation is changed to use usec resolution (i.e. USEC_PER_JIFFY) instead of using jiffies. Thus, usecs_to_jiffies() is not used in the bpf_cubic.c. 3. In bitctcp_update() [under tcp_friendliness], the original "while (ca->ack_cnt > delta)" loop is changed to the equivalent "ca->ack_cnt / delta" operation. Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: Add bpf_dctcp exampleMartin KaFai Lau2020-01-091-0/+187
This patch adds a bpf_dctcp example. It currently does not do no-ECN fallback but the same could be done through the cgrp2-bpf. Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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