Linux-kselftest-mirror

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14234 discussions

[PATCH net-next v9 0/6] netconsole: support automatic target recovery

by Andre Carvalho

This patchset introduces target resume capability to netconsole allowing it to recover targets when underlying low-level interface comes back online. The patchset starts by refactoring netconsole state representation in order to allow representing deactivated targets (targets that are disabled due to interfaces unregister). It then modifies netconsole to handle NETDEV_REGISTER events for such targets, setups netpoll and forces the device UP. Targets are matched with incoming interfaces depending on how they were bound in netconsole (by mac or interface name). For these reasons, we also attempt resuming on NETDEV_CHANGENAME. The patchset includes a selftest that validates netconsole target state transitions and that target is functional after resumed. Signed-off-by: Andre Carvalho <asantostc(a)gmail.com> --- Changes in v9: - Hold dynamic_netconsole_mutex on process_resume_target. - Cleanup dev_name as part of netconsole_process_cleanups_core to ensure we correctly resume by mac (for targets bound by mac) - Link to v8: https://lore.kernel.org/r/20251128-netcons-retrigger-v8-0-0bccbf4c6385@gmai… Changes in v8: - Handle NETDEV_REGISTER/CHANGENAME instead of NETDEV_UP (and force the device UP), to increase the chances of succesfully resuming a target. This requires using a workqueue instead of inline in the event notifier as we can't UP the device otherwise. - Link to v7: https://lore.kernel.org/r/20251126-netcons-retrigger-v7-0-1d86dba83b1c@gmai… Changes in v7: - selftest: use ${EXIT_STATUS} instead of ${ksft_pass} to avoid shellcheck warning - Link to v6: https://lore.kernel.org/r/20251121-netcons-retrigger-v6-0-9c03f5a2bd6f@gmai… Changes in v6: - Rebase on top of net-next to resolve conflicts, no functional changes. - Link to v5: https://lore.kernel.org/r/20251119-netcons-retrigger-v5-0-2c7dda6055d6@gmai… Changes in v5: - patch 3: Set (de)enslaved target as DISABLED instead of DEACTIVATED to prevent resuming it. - selftest: Fix test cleanup by moving trap line to outside of loop and remove unneeded 'local' keyword - Rename maybe_resume_target to resume_target, add netconsole_ prefix to process_resumable_targets. - Hold device reference before calling __netpoll_setup. - Link to v4: https://lore.kernel.org/r/20251116-netcons-retrigger-v4-0-5290b5f140c2@gmai… Changes in v4: - Simplify selftest cleanup, removing trap setup in loop. - Drop netpoll helper (__setup_netpoll_hold) and manage reference inside netconsole. - Move resume_list processing logic to separate function. - Link to v3: https://lore.kernel.org/r/20251109-netcons-retrigger-v3-0-1654c280bbe6@gmai… Changes in v3: - Resume by mac or interface name depending on how target was created. - Attempt to resume target without holding target list lock, by moving the target to a temporary list. This is required as netpoll may attempt to allocate memory. - Link to v2: https://lore.kernel.org/r/20250921-netcons-retrigger-v2-0-a0e84006237f@gmai… Changes in v2: - Attempt to resume target in the same thread, instead of using workqueue . - Add wrapper around __netpoll_setup (patch 4). - Renamed resume_target to maybe_resume_target and moved conditionals to inside its implementation, keeping code more clear. - Verify that device addr matches target mac address when target was setup using mac. - Update selftest to cover targets bound by mac and interface name. - Fix typo in selftest comment and sort tests alphabetically in Makefile. - Link to v1: https://lore.kernel.org/r/20250909-netcons-retrigger-v1-0-3aea904926cf@gmai… --- Andre Carvalho (4): netconsole: convert 'enabled' flag to enum for clearer state management netconsole: clear dev_name for devices bound by mac netconsole: resume previously deactivated target selftests: netconsole: validate target resume Breno Leitao (2): netconsole: add target_state enum netconsole: add STATE_DEACTIVATED to track targets disabled by low level drivers/net/netconsole.c | 171 +++++++++++++++++---- tools/testing/selftests/drivers/net/Makefile | 1 + .../selftests/drivers/net/lib/sh/lib_netcons.sh | 35 ++++- .../selftests/drivers/net/netcons_resume.sh | 97 ++++++++++++ 4 files changed, 270 insertions(+), 34 deletions(-) --- base-commit: dbf8fe85a16a33d6b6bd01f2bc606fc017771465 change-id: 20250816-netcons-retrigger-a4f547bfc867 Best regards, -- Andre Carvalho <asantostc(a)gmail.com>

2 days, 21 hours

[PATCH 11/11] rust: kunit: use `pin_init::zeroed` instead of custom null value

by Gary Guo

From: Gary Guo <gary(a)garyguo.net> The last null element can be created (constly) using `pin_init::zeroed`, so prefer to use it instead of adding a custom way of building it. Signed-off-by: Gary Guo <gary(a)garyguo.net> --- rust/kernel/kunit.rs | 26 +------------------------- rust/macros/kunit.rs | 4 ++-- 2 files changed, 3 insertions(+), 27 deletions(-) diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs index 79436509dd73d..034158cdaf06b 100644 --- a/rust/kernel/kunit.rs +++ b/rust/kernel/kunit.rs @@ -192,9 +192,6 @@ pub fn is_test_result_ok(t: impl TestResult) -> bool { } /// Represents an individual test case. -/// -/// The [`kunit_unsafe_test_suite!`] macro expects a NULL-terminated list of valid test cases. -/// Use [`kunit_case_null`] to generate such a delimiter. #[doc(hidden)] pub const fn kunit_case( name: &'static kernel::str::CStr, @@ -215,27 +212,6 @@ pub const fn kunit_case( } } -/// Represents the NULL test case delimiter. -/// -/// The [`kunit_unsafe_test_suite!`] macro expects a NULL-terminated list of test cases. This -/// function returns such a delimiter. -#[doc(hidden)] -pub const fn kunit_case_null() -> kernel::bindings::kunit_case { - kernel::bindings::kunit_case { - run_case: None, - name: core::ptr::null_mut(), - generate_params: None, - attr: kernel::bindings::kunit_attributes { - speed: kernel::bindings::kunit_speed_KUNIT_SPEED_NORMAL, - }, - status: kernel::bindings::kunit_status_KUNIT_SUCCESS, - module_name: core::ptr::null_mut(), - log: core::ptr::null_mut(), - param_init: None, - param_exit: None, - } -} - /// Registers a KUnit test suite. /// /// # Safety @@ -254,7 +230,7 @@ pub const fn kunit_case_null() -> kernel::bindings::kunit_case { /// /// static mut KUNIT_TEST_CASES: [kernel::bindings::kunit_case; 2] = [ /// kernel::kunit::kunit_case(kernel::c_str!("name"), test_fn), -/// kernel::kunit::kunit_case_null(), +/// pin_init::zeroed(), /// ]; /// kernel::kunit_unsafe_test_suite!(suite_name, KUNIT_TEST_CASES); /// ``` diff --git a/rust/macros/kunit.rs b/rust/macros/kunit.rs index 516219f5b1356..fd2cfabfaef76 100644 --- a/rust/macros/kunit.rs +++ b/rust/macros/kunit.rs @@ -74,7 +74,7 @@ pub(crate) fn kunit_tests(test_suite: Ident, mut module: ItemMod) -> Result<Toke // static mut TEST_CASES: [::kernel::bindings::kunit_case; 3] = [ // ::kernel::kunit::kunit_case(::kernel::c_str!("foo"), kunit_rust_wrapper_foo), // ::kernel::kunit::kunit_case(::kernel::c_str!("bar"), kunit_rust_wrapper_bar), - // ::kernel::kunit::kunit_case_null(), + // ::pin_init::zeroed(), // ]; // // ::kernel::kunit_unsafe_test_suite!(kunit_test_suit_name, TEST_CASES); @@ -159,7 +159,7 @@ macro_rules! assert_eq { processed_items.push(parse_quote! { static mut TEST_CASES: [::kernel::bindings::kunit_case; #num_tests_plus_1] = [ #(#test_cases,)* - ::kernel::kunit::kunit_case_null(), + ::pin_init::zeroed(), ]; }); processed_items.push(parse_quote! { -- 2.51.2

2 days, 22 hours

[PATCH] rust: fix off-by-one line number in rustdoc tests

by Gary Guo

From: Gary Guo <gary(a)garyguo.net> When the `#![allow]` line was added, the doctest line number anchor isn't updated which causes the line number printed in kunit test to be off-by-one. Fixes: ab844cf32058 ("rust: allow `unreachable_pub` for doctests") Signed-off-by: Gary Guo <gary(a)garyguo.net> --- scripts/rustdoc_test_gen.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/rustdoc_test_gen.rs b/scripts/rustdoc_test_gen.rs index be05610496605..6fd9f5c84e2e4 100644 --- a/scripts/rustdoc_test_gen.rs +++ b/scripts/rustdoc_test_gen.rs @@ -206,7 +206,7 @@ macro_rules! assert_eq {{ /// The anchor where the test code body starts. #[allow(unused)] - static __DOCTEST_ANCHOR: i32 = ::core::line!() as i32 + {body_offset} + 1; + static __DOCTEST_ANCHOR: i32 = ::core::line!() as i32 + {body_offset} + 2; {{ #![allow(unreachable_pub, clippy::disallowed_names)] {body} base-commit: 559e608c46553c107dbba19dae0854af7b219400 -- 2.51.2

2 days, 23 hours

[PATCH] selftests/nolibc: drop NOLIBC_SYSROOT=0 logic

by Thomas Weißschuh

This logic was added in commit 850fad7de827 ("selftests/nolibc: allow test -include /path/to/nolibc.h") to allow the testing of -include /path/to/nolibc.h. As it requires as special variable to activate, this code is nearly never used. Furthermore it complicates the logic a bit. Since commit a6a054c8ad32 ("tools/nolibc: add target to check header usability") and commit 443c6467fcd6 ("selftests/nolibc: always run nolibc header check") the usability of -include /path/to/nolibc.h is always checked anyways, making NOLIBC_SYSROOT=0 pointless. Drop the special logic. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- tools/testing/selftests/nolibc/Makefile.nolibc | 6 ------ 1 file changed, 6 deletions(-) diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing/selftests/nolibc/Makefile.nolibc index f9d43cbdc894..b17ba2f8fb46 100644 --- a/tools/testing/selftests/nolibc/Makefile.nolibc +++ b/tools/testing/selftests/nolibc/Makefile.nolibc @@ -302,15 +302,9 @@ sysroot/$(ARCH)/include: $(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone headers_check $(Q)mv sysroot/sysroot sysroot/$(ARCH) -ifneq ($(NOLIBC_SYSROOT),0) nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC) -else -nolibc-test: nolibc-test.c nolibc-test-linkage.c - $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ - -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c $(LIBGCC) -endif libc-test: nolibc-test.c nolibc-test-linkage.c $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c --- base-commit: 9d16b22b17ddfd27df1da6088a962a72658f46d1 change-id: 20260104-nolibc-nolibc_sysroot-deb36526dcd3 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

3 days, 5 hours

[PATCH 02/11] rust: macros: use `quote!` from vendored crate

by Gary Guo

From: Gary Guo <gary(a)garyguo.net> With `quote` crate now vendored in the kernel, we can remove our custom `quote!` macro implementation and just rely on that crate instead. The `quote` crate uses types from the `proc-macro2` library so we also update to use that, and perform conversion in the top-level lib.rs. Signed-off-by: Gary Guo <gary(a)garyguo.net> --- rust/macros/concat_idents.rs | 2 +- rust/macros/export.rs | 4 +- rust/macros/fmt.rs | 4 +- rust/macros/helpers.rs | 2 +- rust/macros/kunit.rs | 3 +- rust/macros/lib.rs | 21 ++-- rust/macros/module.rs | 6 +- rust/macros/paste.rs | 2 +- rust/macros/quote.rs | 182 ----------------------------------- rust/macros/vtable.rs | 3 +- 10 files changed, 28 insertions(+), 201 deletions(-) delete mode 100644 rust/macros/quote.rs diff --git a/rust/macros/concat_idents.rs b/rust/macros/concat_idents.rs index 7e4b450f3a507..12cb231c3d715 100644 --- a/rust/macros/concat_idents.rs +++ b/rust/macros/concat_idents.rs @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 -use proc_macro::{token_stream, Ident, TokenStream, TokenTree}; +use proc_macro2::{token_stream, Ident, TokenStream, TokenTree}; use crate::helpers::expect_punct; diff --git a/rust/macros/export.rs b/rust/macros/export.rs index a08f6337d5c8d..92d9b30971929 100644 --- a/rust/macros/export.rs +++ b/rust/macros/export.rs @@ -1,7 +1,9 @@ // SPDX-License-Identifier: GPL-2.0 +use proc_macro2::TokenStream; +use quote::quote; + use crate::helpers::function_name; -use proc_macro::TokenStream; /// Please see [`crate::export`] for documentation. pub(crate) fn export(_attr: TokenStream, ts: TokenStream) -> TokenStream { diff --git a/rust/macros/fmt.rs b/rust/macros/fmt.rs index 2f4b9f6e22110..19f709262552b 100644 --- a/rust/macros/fmt.rs +++ b/rust/macros/fmt.rs @@ -1,8 +1,10 @@ // SPDX-License-Identifier: GPL-2.0 -use proc_macro::{Ident, TokenStream, TokenTree}; use std::collections::BTreeSet; +use proc_macro2::{Ident, TokenStream, TokenTree}; +use quote::quote_spanned; + /// Please see [`crate::fmt`] for documentation. pub(crate) fn fmt(input: TokenStream) -> TokenStream { let mut input = input.into_iter(); diff --git a/rust/macros/helpers.rs b/rust/macros/helpers.rs index e2602be402c10..853527b5d9567 100644 --- a/rust/macros/helpers.rs +++ b/rust/macros/helpers.rs @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 -use proc_macro::{token_stream, Group, Ident, TokenStream, TokenTree}; +use proc_macro2::{token_stream, Group, Ident, TokenStream, TokenTree}; pub(crate) fn try_ident(it: &mut token_stream::IntoIter) -> Option<String> { if let Some(TokenTree::Ident(ident)) = it.next() { diff --git a/rust/macros/kunit.rs b/rust/macros/kunit.rs index b395bb0536959..7427c17ee5f5c 100644 --- a/rust/macros/kunit.rs +++ b/rust/macros/kunit.rs @@ -4,10 +4,11 @@ //! //! Copyright (c) 2023 José Expósito <jose.exposito89(a)gmail.com> -use proc_macro::{Delimiter, Group, TokenStream, TokenTree}; use std::collections::HashMap; use std::fmt::Write; +use proc_macro2::{Delimiter, Group, TokenStream, TokenTree}; + pub(crate) fn kunit_tests(attr: TokenStream, ts: TokenStream) -> TokenStream { let attr = attr.to_string(); diff --git a/rust/macros/lib.rs b/rust/macros/lib.rs index 793f712dbf7c0..8e0f49ac783b2 100644 --- a/rust/macros/lib.rs +++ b/rust/macros/lib.rs @@ -11,8 +11,6 @@ // to avoid depending on the full `proc_macro_span` on Rust >= 1.88.0. #![cfg_attr(not(CONFIG_RUSTC_HAS_SPAN_FILE), feature(proc_macro_span))] -#[macro_use] -mod quote; mod concat_idents; mod export; mod fmt; @@ -101,7 +99,7 @@ /// the kernel module. #[proc_macro] pub fn module(ts: TokenStream) -> TokenStream { - module::module(ts) + module::module(ts.into()).into() } /// Declares or implements a vtable trait. @@ -176,7 +174,7 @@ pub fn module(ts: TokenStream) -> TokenStream { /// [`kernel::error::VTABLE_DEFAULT_ERROR`]: ../kernel/error/constant.VTABLE_DEFAULT_ERROR.html #[proc_macro_attribute] pub fn vtable(attr: TokenStream, ts: TokenStream) -> TokenStream { - vtable::vtable(attr, ts) + vtable::vtable(attr.into(), ts.into()).into() } /// Export a function so that C code can call it via a header file. @@ -199,7 +197,7 @@ pub fn vtable(attr: TokenStream, ts: TokenStream) -> TokenStream { /// automatically exported with `EXPORT_SYMBOL_GPL`. #[proc_macro_attribute] pub fn export(attr: TokenStream, ts: TokenStream) -> TokenStream { - export::export(attr, ts) + export::export(attr.into(), ts.into()).into() } /// Like [`core::format_args!`], but automatically wraps arguments in [`kernel::fmt::Adapter`]. @@ -217,7 +215,7 @@ pub fn export(attr: TokenStream, ts: TokenStream) -> TokenStream { /// [`pr_info!`]: ../kernel/macro.pr_info.html #[proc_macro] pub fn fmt(input: TokenStream) -> TokenStream { - fmt::fmt(input) + fmt::fmt(input.into()).into() } /// Concatenate two identifiers. @@ -275,7 +273,7 @@ pub fn fmt(input: TokenStream) -> TokenStream { /// ``` #[proc_macro] pub fn concat_idents(ts: TokenStream) -> TokenStream { - concat_idents::concat_idents(ts) + concat_idents::concat_idents(ts.into()).into() } /// Paste identifiers together. @@ -413,9 +411,12 @@ pub fn concat_idents(ts: TokenStream) -> TokenStream { /// [`paste`]: https://docs.rs/paste/ #[proc_macro] pub fn paste(input: TokenStream) -> TokenStream { - let mut tokens = input.into_iter().collect(); + let mut tokens = proc_macro2::TokenStream::from(input).into_iter().collect(); paste::expand(&mut tokens); - tokens.into_iter().collect() + tokens + .into_iter() + .collect::<proc_macro2::TokenStream>() + .into() } /// Registers a KUnit test suite and its test cases using a user-space like syntax. @@ -442,5 +443,5 @@ pub fn paste(input: TokenStream) -> TokenStream { /// ``` #[proc_macro_attribute] pub fn kunit_tests(attr: TokenStream, ts: TokenStream) -> TokenStream { - kunit::kunit_tests(attr, ts) + kunit::kunit_tests(attr.into(), ts.into()).into() } diff --git a/rust/macros/module.rs b/rust/macros/module.rs index 8cef6cc958b54..6974fb04f58fa 100644 --- a/rust/macros/module.rs +++ b/rust/macros/module.rs @@ -1,9 +1,11 @@ // SPDX-License-Identifier: GPL-2.0 -use crate::helpers::*; -use proc_macro::{token_stream, Delimiter, Literal, TokenStream, TokenTree}; use std::fmt::Write; +use proc_macro2::{token_stream, Delimiter, Literal, TokenStream, TokenTree}; + +use crate::helpers::*; + fn expect_string_array(it: &mut token_stream::IntoIter) -> Vec<String> { let group = expect_group(it); assert_eq!(group.delimiter(), Delimiter::Bracket); diff --git a/rust/macros/paste.rs b/rust/macros/paste.rs index cce712d19855b..2181e312a7d32 100644 --- a/rust/macros/paste.rs +++ b/rust/macros/paste.rs @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 -use proc_macro::{Delimiter, Group, Ident, Spacing, Span, TokenTree}; +use proc_macro2::{Delimiter, Group, Ident, Spacing, Span, TokenTree}; fn concat_helper(tokens: &[TokenTree]) -> Vec<(String, Span)> { let mut tokens = tokens.iter(); diff --git a/rust/macros/quote.rs b/rust/macros/quote.rs deleted file mode 100644 index ddfc21577539c..0000000000000 --- a/rust/macros/quote.rs +++ /dev/null @@ -1,182 +0,0 @@ -// SPDX-License-Identifier: Apache-2.0 OR MIT - -use proc_macro::{TokenStream, TokenTree}; - -pub(crate) trait ToTokens { - fn to_tokens(&self, tokens: &mut TokenStream); -} - -impl<T: ToTokens> ToTokens for Option<T> { - fn to_tokens(&self, tokens: &mut TokenStream) { - if let Some(v) = self { - v.to_tokens(tokens); - } - } -} - -impl ToTokens for proc_macro::Group { - fn to_tokens(&self, tokens: &mut TokenStream) { - tokens.extend([TokenTree::from(self.clone())]); - } -} - -impl ToTokens for proc_macro::Ident { - fn to_tokens(&self, tokens: &mut TokenStream) { - tokens.extend([TokenTree::from(self.clone())]); - } -} - -impl ToTokens for TokenTree { - fn to_tokens(&self, tokens: &mut TokenStream) { - tokens.extend([self.clone()]); - } -} - -impl ToTokens for TokenStream { - fn to_tokens(&self, tokens: &mut TokenStream) { - tokens.extend(self.clone()); - } -} - -/// Converts tokens into [`proc_macro::TokenStream`] and performs variable interpolations with -/// the given span. -/// -/// This is a similar to the -/// [`quote_spanned!`](https://docs.rs/quote/latest/quote/macro.quote_spanned.html) macro from the -/// `quote` crate but provides only just enough functionality needed by the current `macros` crate. -macro_rules! quote_spanned { - ($span:expr => $($tt:tt)*) => {{ - let mut tokens = ::proc_macro::TokenStream::new(); - { - #[allow(unused_variables)] - let span = $span; - quote_spanned!(@proc tokens span $($tt)*); - } - tokens - }}; - (@proc $v:ident $span:ident) => {}; - (@proc $v:ident $span:ident #$id:ident $($tt:tt)*) => { - $crate::quote::ToTokens::to_tokens(&$id, &mut $v); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident #(#$id:ident)* $($tt:tt)*) => { - for token in $id { - $crate::quote::ToTokens::to_tokens(&token, &mut $v); - } - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident ( $($inner:tt)* ) $($tt:tt)*) => { - #[allow(unused_mut)] - let mut tokens = ::proc_macro::TokenStream::new(); - quote_spanned!(@proc tokens $span $($inner)*); - $v.extend([::proc_macro::TokenTree::Group(::proc_macro::Group::new( - ::proc_macro::Delimiter::Parenthesis, - tokens, - ))]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident [ $($inner:tt)* ] $($tt:tt)*) => { - let mut tokens = ::proc_macro::TokenStream::new(); - quote_spanned!(@proc tokens $span $($inner)*); - $v.extend([::proc_macro::TokenTree::Group(::proc_macro::Group::new( - ::proc_macro::Delimiter::Bracket, - tokens, - ))]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident { $($inner:tt)* } $($tt:tt)*) => { - let mut tokens = ::proc_macro::TokenStream::new(); - quote_spanned!(@proc tokens $span $($inner)*); - $v.extend([::proc_macro::TokenTree::Group(::proc_macro::Group::new( - ::proc_macro::Delimiter::Brace, - tokens, - ))]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident :: $($tt:tt)*) => { - $v.extend([::proc_macro::Spacing::Joint, ::proc_macro::Spacing::Alone].map(|spacing| { - ::proc_macro::TokenTree::Punct(::proc_macro::Punct::new(':', spacing)) - })); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident : $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new(':', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident , $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new(',', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident @ $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('@', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident ! $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('!', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident ; $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new(';', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident + $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('+', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident = $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('=', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident # $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('#', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident & $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Punct( - ::proc_macro::Punct::new('&', ::proc_macro::Spacing::Alone), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident _ $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Ident( - ::proc_macro::Ident::new("_", $span), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; - (@proc $v:ident $span:ident $id:ident $($tt:tt)*) => { - $v.extend([::proc_macro::TokenTree::Ident( - ::proc_macro::Ident::new(stringify!($id), $span), - )]); - quote_spanned!(@proc $v $span $($tt)*); - }; -} - -/// Converts tokens into [`proc_macro::TokenStream`] and performs variable interpolations with -/// mixed site span ([`Span::mixed_site()`]). -/// -/// This is a similar to the [`quote!`](https://docs.rs/quote/latest/quote/macro.quote.html) macro -/// from the `quote` crate but provides only just enough functionality needed by the current -/// `macros` crate. -/// -/// [`Span::mixed_site()`]: https://doc.rust-lang.org/proc_macro/struct.Span.html#method.mixed_site -macro_rules! quote { - ($($tt:tt)*) => { - quote_spanned!(::proc_macro::Span::mixed_site() => $($tt)*) - } -} diff --git a/rust/macros/vtable.rs b/rust/macros/vtable.rs index ee06044fcd4f3..f209216785745 100644 --- a/rust/macros/vtable.rs +++ b/rust/macros/vtable.rs @@ -1,9 +1,10 @@ // SPDX-License-Identifier: GPL-2.0 -use proc_macro::{Delimiter, Group, TokenStream, TokenTree}; use std::collections::HashSet; use std::fmt::Write; +use proc_macro2::{Delimiter, Group, TokenStream, TokenTree}; + pub(crate) fn vtable(_attr: TokenStream, ts: TokenStream) -> TokenStream { let mut tokens: Vec<_> = ts.into_iter().collect(); -- 2.51.2

3 days, 8 hours

[RFC PATCH v2 0/3] Memory Controller eBPF support

by Hui Zhu

From: Hui Zhu <zhuhui(a)kylinos.cn> This series adds BPF struct_ops support to the memory controller, enabling dynamic control over memory pressure through the memcg_nr_pages_over_high mechanism. This allows administrators to suppress low-priority cgroups' memory usage based on custom policies implemented in BPF programs. Background and Motivation The memory controller provides memory.high limits to throttle cgroups exceeding their soft limit. However, the current implementation applies the same policy across all cgroups without considering priority or workload characteristics. This series introduces a BPF hook that allows reporting additional "pages over high" for specific cgroups, effectively increasing memory pressure and throttling for lower-priority workloads when higher-priority cgroups need resources. Use Case: Priority-Based Memory Management Consider a system running both latency-sensitive services and batch processing workloads. When the high-priority service experiences memory pressure (detected via page scan events), the BPF program can artificially inflate the "over high" count for low-priority cgroups, causing them to be throttled more aggressively and freeing up memory for the critical workload. Implementation This series builds upon Roman Gushchin's BPF OOM patch series in [1]. The implementation adds: 1. A memcg_bpf_ops struct_ops type with memcg_nr_pages_over_high hook 2. Integration into memory pressure calculation paths 3. Cgroup hierarchy management (inheritance during online/offline) 4. SRCU protection for safe concurrent access Why Not PSI? This implementation does not use PSI for triggering, as discussed in [2]. Instead, the sample code monitors PGSCAN events via tracepoints, which provides more direct feedback on memory pressure. Example Results Testing on x86_64 QEMU (10 CPU, 4GB RAM, cache=none swap): root@ubuntu:~# cat /proc/sys/vm/swappiness 60 root@ubuntu:~# mkdir /sys/fs/cgroup/high root@ubuntu:~# mkdir /sys/fs/cgroup/low root@ubuntu:~# ./memcg /sys/fs/cgroup/low /sys/fs/cgroup/high 100 1024 Successfully attached! root@ubuntu:~# cgexec -g memory:low stress-ng --vm 4 --vm-keep --vm-bytes 80% \ --vm-method all --seed 2025 --metrics -t 60 \ & cgexec -g memory:high stress-ng --vm 4 --vm-keep --vm-bytes 80% \ --vm-method all --seed 2025 --metrics -t 60 [1] 1075 stress-ng: info: [1075] setting to a 1 min, 0 secs run per stressor stress-ng: info: [1076] setting to a 1 min, 0 secs run per stressor stress-ng: info: [1075] dispatching hogs: 4 vm stress-ng: info: [1076] dispatching hogs: 4 vm stress-ng: metrc: [1076] stressor bogo ops real time usr time sys time bogo ops/s bogo ops/s CPU used per RSS Max stress-ng: metrc: [1076] (secs) (secs) (secs) (real time) (usr+sys time) instance (%) (KB) stress-ng: metrc: [1076] vm 21033377 60.47 158.04 3.66 347825.55 130076.67 66.85 834836 stress-ng: info: [1076] skipped: 0 stress-ng: info: [1076] passed: 4: vm (4) stress-ng: info: [1076] failed: 0 stress-ng: info: [1076] metrics untrustworthy: 0 stress-ng: info: [1076] successful run completed in 1 min, 0.72 secs root@ubuntu:~# stress-ng: metrc: [1075] stressor bogo ops real time usr time sys time bogo ops/s bogo ops/s CPU used per RSS Max stress-ng: metrc: [1075] (secs) (secs) (secs) (real time) (usr+sys time) instance (%) (KB) stress-ng: metrc: [1075] vm 11568 65.05 0.00 0.21 177.83 56123.74 0.08 3200 stress-ng: info: [1075] skipped: 0 stress-ng: info: [1075] passed: 4: vm (4) stress-ng: info: [1075] failed: 0 stress-ng: info: [1075] metrics untrustworthy: 0 stress-ng: info: [1075] successful run completed in 1 min, 5.06 secs Results show the low-priority cgroup (/sys/fs/cgroup/low) was significantly throttled: - High-priority cgroup: 21,033,377 bogo ops at 347,825 ops/s - Low-priority cgroup: 11,568 bogo ops at 177 ops/s The stress-ng process in the low-priority cgroup experienced a ~99.9% slowdown in memory operations compared to the high-priority cgroup, demonstrating effective priority enforcement through BPF-controlled memory pressure. Patch Overview PATCH 1/3: Core kernel implementation - Adds memcg_bpf_ops struct_ops support - Implements cgroup lifecycle management - Integrates hook into pressure calculation PATCH 2/3: Selftest suite - Validates attach/detach behavior - Tests hierarchy inheritance - Verifies throttling effectiveness PATCH 3/3: Sample programs - Demonstrates PGSCAN-based triggering - Shows priority-based throttling - Provides reference implementation Changelog: v2: According to the comments of Tejun Heo, rebased on Roman Gushchin's BPF OOM patch series [1] and added hierarchical delegation support. According to the comments of Roman Gushchin and Michal Hocko, Designed concrete use case scenarios and provided test results. [1] https://lore.kernel.org/lkml/20251027231727.472628-1-roman.gushchin@linux.d… [2] https://lore.kernel.org/lkml/1d9a162605a3f32ac215430131f7745488deaa34@linux… Hui Zhu (3): mm: memcontrol: Add BPF struct_ops for memory pressure control selftests/bpf: Add tests for memcg_bpf_ops samples/bpf: Add memcg priority control example MAINTAINERS | 5 + include/linux/memcontrol.h | 2 + mm/bpf_memcontrol.c | 241 ++++++++++++- mm/bpf_memcontrol.h | 73 ++++ mm/memcontrol.c | 27 +- samples/bpf/.gitignore | 1 + samples/bpf/Makefile | 9 +- samples/bpf/memcg.bpf.c | 95 +++++ samples/bpf/memcg.c | 204 +++++++++++ .../selftests/bpf/prog_tests/memcg_ops.c | 340 ++++++++++++++++++ .../selftests/bpf/progs/memcg_ops_over_high.c | 95 +++++ 11 files changed, 1082 insertions(+), 10 deletions(-) create mode 100644 mm/bpf_memcontrol.h create mode 100644 samples/bpf/memcg.bpf.c create mode 100644 samples/bpf/memcg.c create mode 100644 tools/testing/selftests/bpf/prog_tests/memcg_ops.c create mode 100644 tools/testing/selftests/bpf/progs/memcg_ops_over_high.c -- 2.43.0

3 days, 12 hours

[PATCH v7 net-next 00/13] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v7 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- v7: - Update comments in #3 (Paolo Abeni <pabeni(a)redhat.com>) - Update comments and use synack_type TCP_SYNACK_RETRANS and num_timeout in #9. (Paolo Abeni <pabeni(a)redhat.com>) v6: - Update comment in #3 to highlight RX path is only used for virtio-net (Paolo Abeni <pabeni(a)redhat.com>) - Rename TCP_CONG_WANTS_ECT_1 to TCP_CONG_ECT_1_NEGOTIATION to distiguish from TCP_CONG_ECT_1_ESTABLISH (Paolo Abeni <pabeni(a)redhat.com>) - Move TCP_CONG_ECT_1_ESTABLISH in #6 to latter patch series (Paolo Abeni <pabeni(a)redhat.com>) - Add new synack_type instead of moving the increment of num_retran in #9 (Paolo Abeni <pabeni(a)redhat.com>) - Use new synack_type TCP_SYNACK_RETRANS and num_retrans for SYN/ACK retx fallbackk for AccECN in #10 (Paolo Abeni <pabeni(a)redhat.com>) - Do not cast const struct into non-const in #11, and set AccECN fail mode after tcp_rtx_synack() (Paolo Abeni <pabeni(a)redhat.com>) v5: - Move previous #11 in v4 in latter patch after discussion with RFC author. - Add #3 to update the comments for SKB_GSO_TCP_ECN and SKB_GSO_TCP_ACCECN. (Parav Pandit <parav(a)nvidia.com>) - Add gro self-test for TCP CWR flag in #4. (Eric Dumazet <edumazet(a)google.com>) - Add fixes: tag into #7 (Paolo Abeni <pabeni(a)redhat.com>) - Update commit message of #8 and if condition check (Paolo Abeni <pabeni(a)redhat.com>) - Add empty line between variable declarations and code in #13 (Paolo Abeni <pabeni(a)redhat.com>) v4: - Add previous #13 in v2 back after dicussion with the RFC author. - Add TCP_ACCECN_OPTION_PERSIST to tcp_ecn_option sysctl to ignore AccECN fallback policy on sending AccECN option. v3: - Add additional min() check if pkts_acked_ewma is not initialized in #1. (Paolo Abeni <pabeni(a)redhat.com>) - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. (Paolo Abeni <pabeni(a)redhat.com>) - Add empty line between variable declarations and code in #4. (Paolo Abeni <pabeni(a)redhat.com>) - Update commit message to fix old AccECN commits in #5. (Paolo Abeni <pabeni(a)redhat.com>) - Remove unnecessary brackets in #10. (Paolo Abeni <pabeni(a)redhat.com>) - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. (Paolo Abeni <pabeni(a)redhat.com>) --- Chia-Yu Chang (11): selftests/net: gro: add self-test for TCP CWR flag tcp: ECT_1_NEGOTIATION and NEEDS_ACCECN identifiers tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: add TCP_SYNACK_RETRANS synack_type tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST tcp: accecn: enable AccECN Ilpo Järvinen (2): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN Documentation/networking/ip-sysctl.rst | 4 +- .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 4 +- include/net/inet_ecn.h | 20 +++- include/net/tcp.h | 32 ++++++- include/net/tcp_ecn.h | 92 ++++++++++++++----- net/ipv4/inet_connection_sock.c | 4 + net/ipv4/sysctl_net_ipv4.c | 4 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 5 +- net/ipv4/tcp_input.c | 37 +++++++- net/ipv4/tcp_minisocks.c | 46 +++++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 32 ++++--- net/ipv4/tcp_timer.c | 3 + tools/testing/selftests/drivers/net/gro.c | 81 +++++++++++----- 16 files changed, 284 insertions(+), 86 deletions(-) -- 2.34.1

4 days, 9 hours

[GIT PULL] kselftest fixes update for Linux 6.19-rc4

by Shuah Khan

Hi Linus, Please pull the kselftest fixes update for Linux 6.19-rc4. linux_kselftest-fixes-6.19-rc4 -- Fix for build failures in tests that use an empty FIXTURE() seen in Android's build environment, which uses -D_FORTIFY_SOURCE=3), a build failure occurs in tests that use an empty FIXTURE(). -- Fix func_traceonoff_triggers.tc sometimes failures on Kunpeng-920 board resulting from including transient trace file name in checksum compare. -- Fix to remove available_events requirement from toplevel-enable for instance as it isn't a valid requirement for this test. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8: Linux 6.19-rc1 (2025-12-14 16:05:07 +1200) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-fixes-6.19-rc4 for you to fetch changes up to 19b8a76cd99bde6d299e60490f3e62b8d3df3997: kselftest/harness: Use helper to avoid zero-size memset warning (2025-12-31 13:27:36 -0700) ---------------------------------------------------------------- linux_kselftest-fixes-6.19-rc4 -- Fix for build failures in tests that use an empty FIXTURE() seen in Android's build environment, which uses -D_FORTIFY_SOURCE=3), a build failure occurs in tests that use an empty FIXTURE(). -- Fix func_traceonoff_triggers.tc sometimes failures on Kunpeng-920 board resulting from including transient trace file name in checksum compare. -- Fix to remove available_events requirement from toplevel-enable for instance as it isn't a valid requirement for this test. ---------------------------------------------------------------- Wake Liu (1): kselftest/harness: Use helper to avoid zero-size memset warning Yipeng Zou (1): selftests/ftrace: traceonoff_triggers: strip off names Zheng Yejian (1): selftests/ftrace: Test toplevel-enable for instance tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc | 3 ++- .../selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc | 5 +++-- tools/testing/selftests/kselftest_harness.h | 8 +++++++- 3 files changed, 12 insertions(+), 4 deletions(-) ----------------------------------------------------------------

5 days, 1 hour

[PATCH v4 net 2/2] selftests: net: simple selftest for ipvtap

by Dmitry Skorodumov

This is a simple ipvtap test to test handling IP-address add/remove on ipvlan interface. It creates a veth-interface and then creates several network-namespace with ipvlan0 interface in it linked to veth. Then it starts to add/remove addresses on ipvlan0 interfaces in several threads. At finish, it checks that there is no duplicated addresses. Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry(a)huawei.com> --- v4: - Removed unneeded modprobe - Number of threads is 8, if KSFT_MACHINE_SLOW==yes. It is needed, since on debug-build test may take more than 15 minutes. - Now veth is created in own namespace - Added comment about why test adds/removes random ip tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/config | 2 + tools/testing/selftests/net/ipvtap_test.sh | 166 +++++++++++++++++++++ 3 files changed, 169 insertions(+) create mode 100755 tools/testing/selftests/net/ipvtap_test.sh diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index b66ba04f19d9..45c4ea381bc3 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -48,6 +48,7 @@ TEST_PROGS := \ ipv6_flowlabel.sh \ ipv6_force_forwarding.sh \ ipv6_route_update_soft_lockup.sh \ + ipvtap_test.sh \ l2_tos_ttl_inherit.sh \ l2tp.sh \ link_netns.py \ diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index 1e1f253118f5..5702ab8fa5ad 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -48,6 +48,7 @@ CONFIG_IPV6_SEG6_LWTUNNEL=y CONFIG_IPV6_SIT=y CONFIG_IPV6_VTI=y CONFIG_IPVLAN=m +CONFIG_IPVTAP=m CONFIG_KALLSYMS=y CONFIG_L2TP=m CONFIG_L2TP_ETH=m @@ -122,6 +123,7 @@ CONFIG_TEST_BPF=m CONFIG_TLS=m CONFIG_TRACEPOINTS=y CONFIG_TUN=y +CONFIG_TAP=m CONFIG_USER_NS=y CONFIG_VETH=y CONFIG_VLAN_8021Q=y diff --git a/tools/testing/selftests/net/ipvtap_test.sh b/tools/testing/selftests/net/ipvtap_test.sh new file mode 100755 index 000000000000..b4e18fc7ada0 --- /dev/null +++ b/tools/testing/selftests/net/ipvtap_test.sh @@ -0,0 +1,167 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Simple tests for ipvtap + + +# +# The testing environment looks this way: +# +# |------HNS-------| |------PHY-------| +# | veth<----------------->veth | +# |------|--|------| |----------------| +# | | +# | | |-----TST0-------| +# | |------------|----ipvlan | +# | |----------------| +# | +# | |-----TST1-------| +# |---------------|----ipvlan | +# |----------------| +# + +ALL_TESTS=" + test_ip_set +" + +source lib.sh + +DEBUG=0 + +VETH_HOST=vethtst.h +VETH_PHY=vethtst.p + +NS_COUNT=32 +IP_ITERATIONS=1024 +[ "$KSFT_MACHINE_SLOW" = "yes" ] && NS_COUNT=8 + +ns_run() { + ns=$1 + shift + if [[ "$ns" == "global" ]]; then + "$@" >/dev/null + else + ip netns exec "$ns" "$@" >/dev/null + fi +} + +test_ip_setup_env() { + setup_ns NS_PHY + setup_ns HST_NS + + # setup simulated other-host (phy) and host itself + ns_run "$HST_NS" ip link add $VETH_HOST type veth peer name $VETH_PHY \ + netns "$NS_PHY" >/dev/null + ns_run "$HST_NS" ip link set $VETH_HOST up + ns_run "$NS_PHY" ip link set $VETH_PHY up + + for ((i=0; i<NS_COUNT; i++)); do + setup_ns ipvlan_ns_$i + ns="ipvlan_ns_$i" + if [ "$DEBUG" = "1" ]; then + echo "created NS ${!ns}" + fi + if ! ns_run "$HST_NS" ip link add netns ${!ns} ipvlan0 \ + link $VETH_HOST \ + type ipvtap mode l2 bridge; then + exit_error "FAIL: Failed to configure ipvlan link." + fi + done +} + +test_ip_cleanup_env() { + ns_run "$HST_NS" ip link del $VETH_HOST + cleanup_all_ns +} + +exit_error() { + echo "$1" + exit $ksft_fail +} + +rnd() { + echo $(( RANDOM % 32 + 16 )) +} + +test_ip_set_thread() { + # Here we are trying to create some IP conflicts between namespaces. + # If just add/remove IP, nothing interesting will happen. + # But if add random IP and then remove random IP, + # eventually conflicts start to apear. + ip link set ipvlan0 up + for ((i=0; i<IP_ITERATIONS; i++)); do + v=$(rnd) + ip a a "172.25.0.$v/24" dev ipvlan0 2>/dev/null + ip a a "fc00::$v/64" dev ipvlan0 2>/dev/null + v=$(rnd) + ip a d "172.25.0.$v/24" dev ipvlan0 2>/dev/null + ip a d "fc00::$v/64" dev ipvlan0 2>/dev/null + done +} + +test_ip_set() { + RET=0 + + trap test_ip_cleanup_env EXIT + + test_ip_setup_env + + declare -A ns_pids + for ((i=0; i<NS_COUNT; i++)); do + ns="ipvlan_ns_$i" + ns_run ${!ns} bash -c "$0 test_ip_set_thread"& + ns_pids[$i]=$! + done + + for ((i=0; i<NS_COUNT; i++)); do + wait "${ns_pids[$i]}" + done + + declare -A all_ips + for ((i=0; i<NS_COUNT; i++)); do + ns="ipvlan_ns_$i" + ip_output=$(ip netns exec ${!ns} ip a l dev ipvlan0 | grep inet) + while IFS= read -r nsip_out; do + if [[ -z $nsip_out ]]; then + continue; + fi + nsip=$(awk '{print $2}' <<< "$nsip_out") + if [[ -v all_ips[$nsip] ]]; then + RET=$ksft_fail + log_test "conflict for $nsip" + return "$RET" + else + all_ips[$nsip]=$i + fi + done <<< "$ip_output" + done + + if [ "$DEBUG" = "1" ]; then + for key in "${!all_ips[@]}"; do + echo "$key: ${all_ips[$key]}" + done + fi + + trap - EXIT + test_ip_cleanup_env + + log_test "test multithreaded ip set" +} + +if [[ "$1" == "-d" ]]; then + DEBUG=1 + shift +fi + +if [[ "$1" == "-t" ]]; then + shift + TESTS="$*" +fi + +if [[ "$1" == "test_ip_set_thread" ]]; then + test_ip_set_thread +else + require_command ip + + tests_run +fi -- 2.43.0

5 days, 1 hour

[PATCH 0/5] bpf: use const pointer for struct_ops cfi_stubs

by Caleb Sander Mateos

struct bpf_struct_ops's cfi_stubs field is used as a readonly pointer but has type void *. Change its type to void const * to allow it to point to readonly global memory. Update the struct_ops implementations to declare their cfi_stubs global variables as const. Caleb Sander Mateos (5): bpf: use const pointer for struct_ops cfi_stubs HID: bpf: make __bpf_hid_bpf_ops const sched_ext: make __bpf_ops_sched_ext_ops const net: make cfi_stubs globals const selftests/bpf: make cfi_stubs globals const drivers/hid/bpf/hid_bpf_struct_ops.c | 2 +- include/linux/bpf.h | 2 +- kernel/bpf/bpf_struct_ops.c | 6 +++--- kernel/sched/ext.c | 2 +- net/bpf/bpf_dummy_struct_ops.c | 2 +- net/ipv4/bpf_tcp_ca.c | 2 +- net/sched/bpf_qdisc.c | 2 +- net/smc/smc_hs_bpf.c | 2 +- .../testing/selftests/bpf/test_kmods/bpf_test_no_cfi.c | 2 +- tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | 10 +++++----- 10 files changed, 16 insertions(+), 16 deletions(-) -- 2.45.2

5 days, 6 hours

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