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2020-05-19samples, bpf: Refactor kprobe, tail call kern progs map definitionDaniel T. Lee8-91/+93
Because the previous two commit replaced the bpf_load implementation of the user program with libbpf, the corresponding kernel program's MAP definition can be replaced with new BTF-defined map syntax. This commit only updates the samples which uses libbpf API for loading bpf program not with bpf_load. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200516040608.1377876-6-danieltimlee@gmail.com
2020-05-19samples, bpf: Add tracex7 test file to .gitignoreDaniel T. Lee1-0/+1
This commit adds tracex7 test file (testfile.img) to .gitignore which comes from test_override_return.sh. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200516040608.1377876-5-danieltimlee@gmail.com
2020-05-19samples, bpf: Refactor tail call user progs with libbpfDaniel T. Lee3-31/+103
BPF tail call uses the BPF_MAP_TYPE_PROG_ARRAY type map for calling into other BPF programs and this PROG_ARRAY should be filled prior to use. Currently, samples with the PROG_ARRAY type MAP fill this program array with bpf_load. For bpf_load to fill this map, kernel BPF program must specify the section with specific format of <prog_type>/<array_idx> (e.g. SEC("socket/0")) But by using libbpf instead of bpf_load, user program can specify which programs should be added to PROG_ARRAY. The advantage of this approach is that you can selectively add only the programs you want, rather than adding all of them to PROG_ARRAY, and it's much more intuitive than the traditional approach. This commit refactors user programs with the PROG_ARRAY type MAP with libbpf instead of using bpf_load. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200516040608.1377876-4-danieltimlee@gmail.com
2020-05-19samples, bpf: Refactor kprobe tracing user progs with libbpfDaniel T. Lee9-64/+252
Currently, the kprobe BPF program attachment method for bpf_load is quite old. The implementation of bpf_load "directly" controls and manages(create, delete) the kprobe events of DEBUGFS. On the other hand, using using the libbpf automatically manages the kprobe event. (under bpf_link interface) By calling bpf_program__attach(_kprobe) in libbpf, the corresponding kprobe is created and the BPF program will be attached to this kprobe. To remove this, by simply invoking bpf_link__destroy will clean up the event. This commit refactors kprobe tracing programs (tracex{1~7}_user.c) with libbpf using bpf_link interface and bpf_program__attach. tracex2_kern.c, which tracks system calls (sys_*), has been modified to append prefix depending on architecture. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200516040608.1377876-3-danieltimlee@gmail.com
2020-05-19samples, bpf: Refactor pointer error check with libbpfDaniel T. Lee3-15/+6
Current method of checking pointer error is not user friendly. Especially the __must_check define makes this less intuitive. Since, libbpf has an API libbpf_get_error() which checks pointer error, this commit refactors existing pointer error check logic with libbpf. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200516040608.1377876-2-danieltimlee@gmail.com
2020-05-16bpf: Selftests, add ktls tests to test_sockmapJohn Fastabend1-26/+44
Until now we have only had minimal ktls+sockmap testing when being used with helpers and different sendmsg/sendpage patterns. Add a pass with ktls here. To run just ktls tests, $ ./test_sockmap --whitelist="ktls" Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939736278.15176.5435314315563203761.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, add blacklist to test_sockmapJohn Fastabend1-2/+31
This adds a blacklist to test_sockmap. For example, now we can run all apply and cork tests except those with timeouts by doing, $ ./test_sockmap --whitelist "apply,cork" --blacklist "hang" Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939734350.15176.6643981099665208826.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, add whitelist option to test_sockmapJohn Fastabend1-1/+30
Allow running specific tests with a comma deliminated whitelist. For example to run all apply and cork tests. $ ./test_sockmap --whitelist="cork,apply" Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939732464.15176.1959113294944564542.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, provide verbose option for selftests executionJohn Fastabend1-108/+71
Pass options from command line args into individual tests which allows us to use verbose option from command line with selftests. Now when verbose option is set individual subtest details will be printed. Also we can consolidate cgroup bring up and tear down. Additionally just setting verbose is very noisy so introduce verbose=1 and verbose=2. Really verbose=2 is only useful when developing tests or debugging some specific issue. For example now we get output like this with --verbose, #20/17 sockhash:txmsg test pull-data:OK [TEST 160]: (512, 1, 3, sendpage, pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 1 cnt 512 err 0 [TEST 161]: (100, 1, 5, sendpage, pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 3 cnt 100 err 0 [TEST 162]: (2, 1024, 256, sendpage, pop (4096,8192),): msg_loop_rx: iov_count 1 iov_buf 255 cnt 2 err 0 [TEST 163]: (512, 1, 3, sendpage, redir,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 1 cnt 512 err 0 [TEST 164]: (100, 1, 5, sendpage, redir,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 3 cnt 100 err 0 [TEST 165]: (512, 1, 3, sendpage, cork 512,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 1 cnt 512 err 0 [TEST 166]: (100, 1, 5, sendpage, cork 512,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 3 cnt 100 err 0 [TEST 167]: (512, 1, 3, sendpage, redir,cork 4,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 1 cnt 512 err 0 [TEST 168]: (100, 1, 5, sendpage, redir,cork 4,pop (1,3),): msg_loop_rx: iov_count 1 iov_buf 3 cnt 100 err 0 Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939730412.15176.1975675235035143367.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, break down test_sockmap into subtestsJohn Fastabend1-375/+348
At the moment test_sockmap runs all 800+ tests ungrouped which is not ideal because it makes it hard to see what is failing but also more importantly its hard to confirm all cases are tested. Additionally, after inspecting we noticed the runtime is bloated because we run many duplicate tests. Worse some of these tests are known error cases that wait for the recvmsg handler to timeout which creats long delays. Also we noted some tests were not clearing their options and as a result the following tests would run with extra and incorrect options. Fix this by reorganizing test code so its clear what tests are running and when. Then it becomes easy to remove duplication and run tests with only the set of send/recv patterns that are relavent. To accomplish this break test_sockmap into subtests and remove unnecessary duplication. The output is more readable now and the runtime reduced. Now default output prints subtests like this, $ ./test_sockmap # 1/ 6 sockmap:txmsg test passthrough:OK ... #22/ 1 sockhash:txmsg test push/pop data:OK Pass: 22 Fail: 0 Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939728384.15176.13601520183665880762.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, improve test_sockmap total bytes counterJohn Fastabend1-3/+8
The recv thread in test_sockmap waits to receive all bytes from sender but in the case we use pop data it may wait for more bytes then actually being sent. This stalls the test harness for multiple seconds. Because this happens in multiple tests it slows time to run the selftest. Fix by doing a better job of accounting for total bytes when pop helpers are used. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939726542.15176.5964532245173539540.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, print error in test_sockmap error casesJohn Fastabend1-8/+17
Its helpful to know the error value if an error occurs. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939724566.15176.12079885932643225626.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, sockmap test prog run without setting cgroupJohn Fastabend1-6/+22
Running test_sockmap with arguments to specify a test pattern requires including a cgroup argument. Instead of requiring this if the option is not provided create one This is not used by selftest runs but I use it when I want to test a specific test. Most useful when developing new code and/or tests. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939722675.15176.6294210959489131688.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, remove prints from sockmap testsJohn Fastabend2-174/+9
The prints in the test_sockmap programs were only useful when we didn't have enough control over test infrastructure to know from user program what was being pushed into kernel side. Now that we have or will shortly have better test controls lets remove the printers. This means we can remove half the programs and cleanup bpf side. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939720756.15176.9806965887313279429.stgit@john-Precision-5820-Tower
2020-05-16bpf: Selftests, move sockmap bpf prog header into progsJohn Fastabend1-0/+0
Moves test_sockmap_kern.h into progs directory but does not change code at all. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158939718921.15176.5766299102332077086.stgit@john-Precision-5820-Tower
2020-05-16selftests/bpf: Move test_align under test_progsStanislav Fomichev1-61/+7
There is a much higher chance we can see the regressions if the test is part of test_progs. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200515194904.229296-2-sdf@google.com
2020-05-16selftests/bpf: Fix test_align verifier log patternsStanislav Fomichev1-20/+21
Commit 294f2fc6da27 ("bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds()") changed the way verifier logs some of its state, adjust the test_align accordingly. Where possible, I tried to not copy-paste the entire log line and resorted to dropping the last closing brace instead. Fixes: 294f2fc6da27 ("bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds()") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200515194904.229296-1-sdf@google.com
2020-05-16libbpf, hashmap: Fix signedness warningsIan Rogers1-3/+2
Fixes the following warnings: hashmap.c: In function ‘hashmap__clear’: hashmap.h:150:20: error: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Werror=sign-compare] 150 | for (bkt = 0; bkt < map->cap; bkt++) \ hashmap.c: In function ‘hashmap_grow’: hashmap.h:150:20: error: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Werror=sign-compare] 150 | for (bkt = 0; bkt < map->cap; bkt++) \ Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200515165007.217120-4-irogers@google.com
2020-05-16libbpf, hashmap: Remove unused #includeIan Rogers1-1/+0
Remove #include of libbpf_internal.h that is unused. Discussed in this thread: https://lore.kernel.org/lkml/CAEf4BzZRmiEds_8R8g4vaAeWvJzPb4xYLnpF0X2VNY8oTzkphQ@mail.gmail.com/ Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200515165007.217120-3-irogers@google.com
2020-05-16bpf: Fix check_return_code to only allow [0,1] in trace_iter progsDaniel Borkmann1-1/+2
As per 15d83c4d7cef ("bpf: Allow loading of a bpf_iter program") we only allow a range of [0,1] for return codes. Therefore BPF_TRACE_ITER relies on the default tnum_range(0, 1) which is set in range var. On recent merge of net into net-next commit e92888c72fbd ("bpf: Enforce returning 0 for fentry/fexit progs") got pulled in and caused a merge conflict with the changes from 15d83c4d7cef. The resolution had a snall hiccup in that it removed the [0,1] range restriction again so that BPF_TRACE_ITER would have no enforcement. Fix it by adding it back. Fixes: da07f52d3caf ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org>
2020-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller342-1523/+3458
Move the bpf verifier trace check into the new switch statement in HEAD. Resolve the overlapping changes in hinic, where bug fixes overlap the addition of VF support. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds78-204/+459
Pull networking fixes from David Miller: 1) Fix sk_psock reference count leak on receive, from Xiyu Yang. 2) CONFIG_HNS should be invisible, from Geert Uytterhoeven. 3) Don't allow locking route MTUs in ipv6, RFCs actually forbid this, from Maciej Żenczykowski. 4) ipv4 route redirect backoff wasn't actually enforced, from Paolo Abeni. 5) Fix netprio cgroup v2 leak, from Zefan Li. 6) Fix infinite loop on rmmod in conntrack, from Florian Westphal. 7) Fix tcp SO_RCVLOWAT hangs, from Eric Dumazet. 8) Various bpf probe handling fixes, from Daniel Borkmann. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (68 commits) selftests: mptcp: pm: rm the right tmp file dpaa2-eth: properly handle buffer size restrictions bpf: Restrict bpf_trace_printk()'s %s usage and add %pks, %pus specifier bpf: Add bpf_probe_read_{user, kernel}_str() to do_refine_retval_range bpf: Restrict bpf_probe_read{, str}() only to archs where they work MAINTAINERS: Mark networking drivers as Maintained. ipmr: Add lockdep expression to ipmr_for_each_table macro ipmr: Fix RCU list debugging warning drivers: net: hamradio: Fix suspicious RCU usage warning in bpqether.c net: phy: broadcom: fix BCM54XX_SHD_SCR3_TRDDAPD value for BCM54810 tcp: fix error recovery in tcp_zerocopy_receive() MAINTAINERS: Add Jakub to networking drivers. MAINTAINERS: another add of Karsten Graul for S390 networking drivers: ipa: fix typos for ipa_smp2p structure doc pppoe: only process PADT targeted at local interfaces selftests/bpf: Enforce returning 0 for fentry/fexit programs bpf: Enforce returning 0 for fentry/fexit progs net: stmmac: fix num_por initialization security: Fix the default value of secid_to_secctx hook libbpf: Fix register naming in PT_REGS s390 macros ...
2020-05-15Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds13-39/+68
Pull rdma fixes from Jason Gunthorpe: "A few minor bug fixes for user visible defects, and one regression: - Various bugs from static checkers and syzkaller - Add missing error checking in mlx4 - Prevent RTNL lock recursion in i40iw - Fix segfault in cxgb4 in peer abort cases - Fix a regression added in 5.7 where the IB_EVENT_DEVICE_FATAL could be lost, and wasn't delivered to all the FDs" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/uverbs: Move IB_EVENT_DEVICE_FATAL to destroy_uobj RDMA/uverbs: Do not discard the IB_EVENT_DEVICE_FATAL event RDMA/iw_cxgb4: Fix incorrect function parameters RDMA/core: Fix double put of resource IB/core: Fix potential NULL pointer dereference in pkey cache IB/hfi1: Fix another case where pq is left on waitlist IB/i40iw: Remove bogus call to netdev_master_upper_dev_get() IB/mlx4: Test return value of calls to ib_get_cached_pkey RDMA/rxe: Always return ERR_PTR from rxe_create_mmap_info() i40iw: Fix error handling in i40iw_manage_arp_cache()
2020-05-15Merge tag 'linux-kselftest-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftestLinus Torvalds4-12/+22
Pull kselftest fixes from Shuah Khan: - lkdtm runner fixes to prevent dmesg clearing and shellcheck errors - ftrace test handling when test module doesn't exist - nsfs test fix to replace zero-length array with flexible-array - dmabuf-heaps test fix to return clear error value * tag 'linux-kselftest-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/lkdtm: Use grep -E instead of egrep selftests/lkdtm: Don't clear dmesg when running tests selftests/ftrace: mark irqsoff_tracer.tc test as unresolved if the test module does not exist tools/testing: Replace zero-length array with flexible-array kselftests: dmabuf-heaps: Fix confused return value on expected error testing
2020-05-15Merge tag 'riscv-for-linus-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds9-21/+25
Pull RISC-V fixes from Palmer Dabbelt: "A handful of build fixes, all found by Huawei's autobuilder. None of these patches should have any functional impact on kernels that build, and they're mostly related to various features intermingling with !MMU. While some of these might be better hoisted to generic code, it seems better to have the simple fixes in the meanwhile. As far as I know these are the only outstanding patches for 5.7" * tag 'riscv-for-linus-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: mmiowb: Fix implicit declaration of function 'smp_processor_id' riscv: pgtable: Fix __kernel_map_pages build error if NOMMU riscv: Make SYS_SUPPORTS_HUGETLBFS depends on MMU riscv: Disable ARCH_HAS_DEBUG_VIRTUAL if NOMMU riscv: Add pgprot_writecombine/device and PAGE_SHARED defination if NOMMU riscv: stacktrace: Fix undefined reference to `walk_stackframe' riscv: Fix unmet direct dependencies built based on SOC_VIRT riscv: perf: RISCV_BASE_PMU should be independent riscv: perf_event: Make some funciton static
2020-05-15Merge branch 'mptcp-fix-MP_JOIN-failure-handling'David S. Miller7-26/+35
Paolo Abeni says: ==================== mptcp: fix MP_JOIN failure handling Currently if we hit an MP_JOIN failure on the third ack, the child socket is closed with reset, but the request socket is not deleted, causing weird behaviors. The main problem is that MPTCP's MP_JOIN code needs to plug it's own 'valid 3rd ack' checks and the current TCP callbacks do not allow that. This series tries to address the above shortcoming introducing a new MPTCP specific bit in a 'struct tcp_request_sock' hole, and leveraging that to allow tcp_check_req releasing the request socket when needed. The above allows cleaning-up a bit current MPTCP hooking in tcp_check_req(). An alternative solution, possibly cleaner but more invasive, would be changing the 'bool *own_req' syn_recv_sock() argument into 'int *req_status' and let MPTCP set it to 'REQ_DROP'. v1 -> v2: - be more conservative about drop_req initialization RFC -> v1: - move the drop_req bit inside tcp_request_sock (Eric) ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15mptcp: cope better with MP_JOIN failurePaolo Abeni1-6/+9
Currently, on MP_JOIN failure we reset the child socket, but leave the request socket untouched. tcp_check_req will deal with it according to the 'tcp_abort_on_overflow' sysctl value - by default the req socket will stay alive. The above leads to inconsistent behavior on MP JOIN failure, and bad listener overflow accounting. This patch addresses the issue leveraging the infrastructure just introduced to ask the TCP stack to drop the req on failure. The child socket is not freed anymore by subflow_syn_recv_sock(), instead it's moved to a dead state and will be disposed by the next sock_put done by the TCP stack, so that listener overflow accounting is not affected by MP JOIN failure. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Christoph Paasch <cpaasch@apple.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15inet_connection_sock: factor out destroy helper.Paolo Abeni2-5/+9
Move the steps to prepare an inet_connection_sock for forced disposal inside a separate helper. No functional changes inteded, this will just simplify the next patch. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Christoph Paasch <cpaasch@apple.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15mptcp: add new sock flag to deal with join subflowsPaolo Abeni5-15/+17
MP_JOIN subflows must not land into the accept queue. Currently tcp_check_req() calls an mptcp specific helper to detect such scenario. Such helper leverages the subflow context to check for MP_JOIN subflows. We need to deal also with MP JOIN failures, even when the subflow context is not available due allocation failure. A possible solution would be changing the syn_recv_sock() signature to allow returning a more descriptive action/ error code and deal with that in tcp_check_req(). Since the above need is MPTCP specific, this patch instead uses a TCP request socket hole to add a MPTCP specific flag. Such flag is used by the MPTCP syn_recv_sock() to tell tcp_check_req() how to deal with the request socket. This change is a no-op for !MPTCP build, and makes the MPTCP code simpler. It allows also the next patch to deal correctly with MP JOIN failure. v1 -> v2: - be more conservative on drop_req initialization (Mat) RFC -> v1: - move the drop_req bit inside tcp_request_sock (Eric) Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Reviewed-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds1-0/+1
Pull arm64 fix from Catalin Marinas: "Fix flush_icache_range() second argument in machine_kexec() to be an address rather than size" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: fix the flush_icache_range arguments in machine_kexec
2020-05-15net: phy: tja11xx: execute cable test on link upOleksij Rempel1-5/+43
A typical 100Base-T1 link should be always connected. If the link is in a shot or open state, it is a failure. In most cases, we won't be able to automatically handle this issue, but we need to log it or notify user (if possible). With this patch, the cable will be tested on "ip l s dev .. up" attempt and send ethnl notification to the user space. This patch was tested with TJA1102 PHY and "ethtool --monitor" command. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller14-43/+137
Alexei Starovoitov says: ==================== pull-request: bpf 2020-05-15 The following pull-request contains BPF updates for your *net* tree. We've added 9 non-merge commits during the last 2 day(s) which contain a total of 14 files changed, 137 insertions(+), 43 deletions(-). The main changes are: 1) Fix secid_to_secctx LSM hook default value, from Anders. 2) Fix bug in mmap of bpf array, from Andrii. 3) Restrict bpf_probe_read to archs where they work, from Daniel. 4) Enforce returning 0 for fentry/fexit progs, from Yonghong. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: phy: broadcom: add support for BCM54811 PHYKevin Lo2-5/+53
The BCM54811 PHY shares many similarities with the already supported BCM54810 PHY but additionally requires some semi-unique configuration. Signed-off-by: Kevin Lo <kevlo@kevlo.org> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge branch 'cxgb4-improve-and-tune-TC-MQPRIO-offload'David S. Miller9-61/+190
Rahul Lakkireddy says: ==================== cxgb4: improve and tune TC-MQPRIO offload Patch 1 improves the Tx path's credit request and recovery mechanism when running under heavy load. Patch 2 adds ability to tune the burst buffer sizes of all traffic classes to improve performance for <= 1500 MTU, under heavy load. Patch 3 adds support to track EOTIDs and dump software queue contexts used by TC-MQPRIO offload. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15cxgb4: add EOTID tracking and software context dumpRahul Lakkireddy5-28/+133
Rework and add support for dumping EOTID software context used by TC-MQPRIO. Also track number of EOTIDs in use. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15cxgb4: tune burst buffer size for TC-MQPRIO offloadRahul Lakkireddy5-19/+31
For each traffic class, firmware handles up to 4 * MTU amount of data per burst cycle. Under heavy load, this small buffer size is a bottleneck when buffering large TSO packets in <= 1500 MTU case. Increase the burst buffer size to 8 * MTU when supported. Also, keep the driver's traffic class configuration API similar to the firmware API counterpart. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15cxgb4: improve credits recovery in TC-MQPRIO Tx pathRahul Lakkireddy1-14/+26
Request credit update for every half credits consumed, including the current request. Also, avoid re-trying to post packets when there are no credits left. The credit update reply via interrupt will eventually restore the credits and will invoke the Tx path again. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller67-252/+741
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-05-15 The following pull-request contains BPF updates for your *net-next* tree. We've added 37 non-merge commits during the last 1 day(s) which contain a total of 67 files changed, 741 insertions(+), 252 deletions(-). The main changes are: 1) bpf_xdp_adjust_tail() now allows to grow the tail as well, from Jesper. 2) bpftool can probe CONFIG_HZ, from Daniel. 3) CAP_BPF is introduced to isolate user processes that use BPF infra and to secure BPF networking services by dropping CAP_SYS_ADMIN requirement in certain cases, from Alexei. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: dsa: mt7530: fix VLAN setupDENG Qingfang1-12/+1
Allow DSA to add VLAN entries even if VLAN filtering is disabled, so enabling it will not block the traffic of existent ports in the bridge Signed-off-by: DENG Qingfang <dqfext@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge branch 'Implement-classifier-action-terse-dump-mode'David S. Miller8-17/+174
Vlad Buslov says: ==================== Implement classifier-action terse dump mode Output rate of current upstream kernel TC filter dump implementation if relatively low (~100k rules/sec depending on configuration). This constraint impacts performance of software switch implementation that rely on TC for their datapath implementation and periodically call TC filter dump to update rules stats. Moreover, TC filter dump output a lot of static data that don't change during the filter lifecycle (filter key, specific action details, etc.) which constitutes significant portion of payload on resulting netlink packets and increases amount of syscalls necessary to dump all filters on particular Qdisc. In order to significantly improve filter dump rate this patch sets implement new mode of TC filter dump operation named "terse dump" mode. In this mode only parameters necessary to identify the filter (handle, action cookie, etc.) and data that can change during filter lifecycle (filter flags, action stats, etc.) are preserved in dump output while everything else is omitted. Userspace API is implemented using new TCA_DUMP_FLAGS tlv with only available flag value TCA_DUMP_FLAGS_TERSE. Internally, new API requires individual classifier support (new tcf_proto_ops->terse_dump() callback). Support for action terse dump is implemented in act API and don't require changing individual action implementations. The following table provides performance comparison between regular filter dump and new terse dump mode for two classifier-action profiles: one minimal config with L2 flower classifier and single gact action and another heavier config with L2+5tuple flower classifier with tunnel_key+mirred actions. Classifier-action type | dump | terse dump | X improvement | (rules/sec) | (rules/sec) | -----------------------------+-------------+-------------+--------------- L2 with gact | 141.8 | 293.2 | 2.07 L2+5tuple tunnel_key+mirred | 76.4 | 198.8 | 2.60 Benchmark details: to measure the rate tc filter dump and terse dump commands are invoked on ingress Qdisc that have one million filters configured using following commands. > time sudo tc -s filter show dev ens1f0 ingress >/dev/null > time sudo tc -s filter show terse dev ens1f0 ingress >/dev/null Value in results table is calculated by dividing 1000000 total rules by "real" time reported by time command. Setup details: 2x Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz, 32GB memory ==================== Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15selftests: mptcp: pm: rm the right tmp fileMatthieu Baerts1-1/+1
"$err" is a variable pointing to a temp file. "$out" is not: only used as a local variable in "check()" and representing the output of a command line. Fixes: eedbc685321b (selftests: add PM netlink functional tests) Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15dpaa2-eth: properly handle buffer size restrictionsIoana Ciornei2-12/+18
Depending on the WRIOP version, the buffer size on the RX path must by a multiple of 64 or 256. Handle this restriction properly by aligning down the buffer size to the necessary value. Also, use the new buffer size dynamically computed instead of the compile time one. Fixes: 27c874867c4e ("dpaa2-eth: Use a single page per Rx buffer") Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15selftests: implement flower classifier terse dump testsVlad Buslov1-0/+38
Implement two basic tests to verify terse dump functionality of flower classifier: - Test that verifies that terse dump works. - Test that verifies that terse dump doesn't print filter key. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: sched: cls_flower: implement terse dump supportVlad Buslov1-0/+43
Implement tcf_proto_ops->terse_dump() callback for flower classifier. Only dump handle, flags and action data in terse mode. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: sched: implement terse dump support in actVlad Buslov4-9/+52
Extend tcf_action_dump() with boolean argument 'terse' that is used to request terse-mode action dump. In terse mode only essential data needed to identify particular action (action kind, cookie, etc.) and its stats is put to resulting skb and everything else is omitted. Implement tcf_exts_terse_dump() helper in cls API that is intended to be used to request terse dump of all exts (actions) attached to the filter. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: sched: introduce terse dump flagVlad Buslov3-8/+41
Add new TCA_DUMP_FLAGS attribute and use it in cls API to request terse filter output from classifiers with TCA_DUMP_FLAGS_TERSE flag. This option is intended to be used to improve performance of TC filter dump when userland only needs to obtain stats and not the whole classifier/action data. Extend struct tcf_proto_ops with new terse_dump() callback that must be defined by supporting classifier implementations. Support of the options in specific classifiers and actions is implemented in following patches in the series. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15net: core: recursively find netdev by device nodeTobias Waldekranz1-5/+5
The assumption that a device node is associated either with the netdev's device, or the parent of that device, does not hold for all drivers. E.g. Freescale's DPAA has two layers of platform devices above the netdev. Instead, recursively walk up the tree from the netdev, allowing any parent to match against the sought after node. Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-15Merge tag 'hwmon-for-v5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-stagingLinus Torvalds3-4/+14
Pull hwmon fixes from Guenter Roeck: - Fix ADC access synchronization problem with da9052 driver - Fix temperature limit and status reporting in nct7904 driver - Fix drivetemp temperature reporting if SCT is supported but SCT data tables are not. * tag 'hwmon-for-v5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (da9052) Synchronize access with mfd hwmon: (nct7904) Fix incorrect range of temperature limit registers hwmon: (nct7904) Read all SMI status registers in probe function hwmon: (drivetemp) Fix SCT support if SCT data tables are not supported
2020-05-15Merge tag 'sound-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds7-13/+111
Pull sound fixes from Takashi Iwai: "Things look good and calming down; the only change to ALSA core is the fix for racy rawmidi buffer accesses spotted by syzkaller, and the rest are all small device-specific quirks for HD-audio and USB-audio devices" * tag 'sound-5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek - Limit int mic boost for Thinkpad T530 ALSA: hda/realtek - Add COEF workaround for ASUS ZenBook UX431DA ALSA: hda/realtek: Enable headset mic of ASUS UX581LV with ALC295 ALSA: hda/realtek - Enable headset mic of ASUS UX550GE with ALC295 ALSA: hda/realtek - Enable headset mic of ASUS GL503VM with ALC295 ALSA: hda/realtek: Add quirk for Samsung Notebook ALSA: rawmidi: Fix racy buffer resize under concurrent accesses ALSA: usb-audio: add mapping for ASRock TRX40 Creator ALSA: hda/realtek - Fix S3 pop noise on Dell Wyse Revert "ALSA: hda/realtek: Fix pop noise on ALC225" ALSA: firewire-lib: fix 'function sizeof not defined' error of tracepoints format ALSA: usb-audio: Add control message quirk delay for Kingston HyperX headset
2020-05-15Merge tag 'drm-fixes-2020-05-15' of git://anongit.freedesktop.org/drm/drmLinus Torvalds38-274/+439
Pull drm fixes from Dave Airlie: "As mentioned last week an i915 PR came in late, but I left it, so the i915 bits of this cover 2 weeks, which is why it's likely a bit larger than usual. Otherwise it's mostly amdgpu fixes, one tegra fix, one meson fix. i915: - Handle idling during i915_gem_evict_something busy loops (Chris) - Mark current submissions with a weak-dependency (Chris) - Propagate error from completed fences (Chris) - Fixes on execlist to avoid GPU hang situation (Chris) - Fixes couple deadlocks (Chris) - Timeslice preemption fixes (Chris) - Fix Display Port interrupt handling on Tiger Lake (Imre) - Reduce debug noise around Frame Buffer Compression (Peter) - Fix logic around IPC W/a for Coffee Lake and Kaby Lake (Sultan) - Avoid dereferencing a dead context (Chris) tegra: - tegra120/4 smmu fixes amdgpu: - Clockgating fixes - Fix fbdev with scatter/gather display - S4 fix for navi - Soft recovery for gfx10 - Freesync fixes - Atomic check cursor fix - Add a gfxoff quirk - MST fix amdkfd: - Fix GEM reference counting meson: - error code propogation fix" * tag 'drm-fixes-2020-05-15' of git://anongit.freedesktop.org/drm/drm: (29 commits) drm/i915: Handle idling during i915_gem_evict_something busy loops drm/meson: pm resume add return errno branch drm/amd/amdgpu: Update update_config() logic drm/amd/amdgpu: add raven1 part to the gfxoff quirk list drm/i915: Mark concurrent submissions with a weak-dependency drm/i915: Propagate error from completed fences drm/i915/gvt: Fix kernel oops for 3-level ppgtt guest drm/i915/gvt: Init DPLL/DDI vreg for virtual display instead of inheritance. drm/amd/display: add basic atomic check for cursor plane drm/amd/display: Fix vblank and pageflip event handling for FreeSync drm/amdgpu: implement soft_recovery for gfx10 drm/amdgpu: enable hibernate support on Navi1X drm/amdgpu: Use GEM obj reference for KFD BOs drm/amdgpu: force fbdev into vram drm/amd/powerplay: perform PG ungate prior to CG ungate drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate drm/amdgpu: disable MGCG/MGLS also on gfx CG ungate drm/i915/execlists: Track inflight CCID drm/i915/execlists: Avoid reusing the same logical CCID drm/i915/gem: Remove object_is_locked assertion from unpin_from_display_plane ...
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