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[PATCH net-next v2 0/8] netconsole: Add taskname sysdata support

by Breno Leitao

This patchset introduces a new feature to the netconsole extradata subsystem that enables the inclusion of the current task's name in the sysdata output of netconsole messages. This enhancement is particularly valuable for large-scale deployments, such as Meta's, where netconsole collects messages from millions of servers and stores them in a data warehouse for analysis. Engineers often rely on these messages to investigate issues and assess kernel health. One common challenge we face is determining the context in which a particular message was generated. By including the task name (task->comm) with each message, this feature provides a direct answer to the frequently asked question: "What was running when this message was generated?" This added context will significantly improve our ability to diagnose and troubleshoot issues, making it easier to interpret output of netconsole. The patchset consists of seven patches that implement the following changes: * Refactor CPU number formatting into a separate function * Prefix CPU_NR sysdata feature with SYSDATA_ * Patch to covert a bitwise operation into boolean * Add configfs controls for taskname sysdata feature * Add taskname to extradata entry count * Add support for including task name in netconsole's extra data output * Document the task name feature in Documentation/networking/netconsole.rst * Add test coverage for the task name feature to the existing sysdata selftest script These changes allow users to enable or disable the task name feature via configfs and provide additional context for kernel messages by showing which task generated each console message. I have tested these patches on some servers and they seem to work as expected. Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v2: - Add an extra patch to convert the comparison more stable. (Paolo) - Changed the argument of a function (Simon) - Removed the warn on `current == NULLL` since it shouldn't be the case. (Simon and Paolo) - Link to v1: https://lore.kernel.org/r/20250221-netcons_current-v1-0-21c86ae8fc0d@debian… --- Breno Leitao (8): netconsole: prefix CPU_NR sysdata feature with SYSDATA_ netconsole: Make boolean comparison consistent netconsole: refactor CPU number formatting into separate function netconsole: add taskname to extradata entry count netconsole: add configfs controls for taskname sysdata feature netconsole: add task name to extra data fields netconsole: docs: document the task name feature netconsole: selftest: add task name append testing Documentation/networking/netconsole.rst | 28 +++++++ drivers/net/netconsole.c | 95 ++++++++++++++++++---- .../selftests/drivers/net/netcons_sysdata.sh | 51 ++++++++++-- 3 files changed, 153 insertions(+), 21 deletions(-) --- base-commit: 56794b5862c5a9aefcf2b703257c6fb93f76573e change-id: 20250217-netcons_current-2c635fa5beda prerequisite-change-id: 20250212-netdevsim-258d2d628175:v3 prerequisite-patch-id: 4ecfdbc58dd599d2358655e4ad742cbb9dde39f3 Best regards, -- Breno Leitao <leitao(a)debian.org>

6 months, 2 weeks

3
11
0 0

[PATCH net-next 0/7] netconsole: Add taskname sysdata support

by Breno Leitao

This patchset introduces a new feature to the netconsole extradata subsystem that enables the inclusion of the current task's name in the sysdata output of netconsole messages. This enhancement is particularly valuable for large-scale deployments, such as Meta's, where netconsole collects messages from millions of servers and stores them in a data warehouse for analysis. Engineers often rely on these messages to investigate issues and assess kernel health. One common challenge we face is determining the context in which a particular message was generated. By including the task name (task->comm) with each message, this feature provides a direct answer to the frequently asked question: "What was running when this message was generated?" This added context will significantly improve our ability to diagnose and troubleshoot issues, making it easier to interpret output of netconsole. The patchset consists of seven patches that implement the following changes: * Refactor CPU number formatting into a separate function * Prefix CPU_NR sysdata feature with SYSDATA_ * Add configfs controls for taskname sysdata feature * Add taskname to extradata entry count * Add support for including task name in netconsole's extra data output * Document the task name feature in Documentation/networking/netconsole.rst * Add test coverage for the task name feature to the existing sysdata selftest script These changes allow users to enable or disable the task name feature via configfs and provide additional context for kernel messages by showing which task generated each console message. I have tested these patches on some servers and they seem to work as expected. Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Breno Leitao (7): netconsole: prefix CPU_NR sysdata feature with SYSDATA_ netconsole: refactor CPU number formatting into separate function netconsole: add taskname to extradata entry count netconsole: add configfs controls for taskname sysdata feature netconsole: add task name to extra data fields netconsole: docs: document the task name feature netconsole: selftest: add task name append testing Documentation/networking/netconsole.rst | 28 +++++++ drivers/net/netconsole.c | 98 ++++++++++++++++++---- .../selftests/drivers/net/netcons_sysdata.sh | 51 +++++++++-- 3 files changed, 156 insertions(+), 21 deletions(-) --- base-commit: bb3bb6c92e5719c0f5d7adb9d34db7e76705ac33 change-id: 20250217-netcons_current-2c635fa5beda prerequisite-change-id: 20250212-netdevsim-258d2d628175:v3 prerequisite-patch-id: 4ecfdbc58dd599d2358655e4ad742cbb9dde39f3 Best regards, -- Breno Leitao <leitao(a)debian.org>

6 months, 2 weeks

3
23
0 0

[PATCHv3 net 0/3] bond: fix xfrm offload issues

by Hangbin Liu

The first patch fixes the incorrect locks using in bond driver. The second patch fixes the xfrm offload feature during setup active-backup mode. The third patch add a ipsec offload testing. v3: move the ipsec deletion to bond_ipsec_free_sa (Cosmin Ratiu) v2: do not turn carrier on if bond change link failed (Nikolay Aleksandrov) move the mutex lock to a work queue (Cosmin Ratiu) Hangbin Liu (3): bonding: move IPsec deletion to bond_ipsec_free_sa bonding: fix xfrm offload feature setup on active-backup mode selftests: bonding: add ipsec offload test drivers/net/bonding/bond_main.c | 36 ++-- drivers/net/bonding/bond_netlink.c | 16 +- include/net/bonding.h | 1 + .../selftests/drivers/net/bonding/Makefile | 3 +- .../drivers/net/bonding/bond_ipsec_offload.sh | 155 ++++++++++++++++++ .../selftests/drivers/net/bonding/config | 4 + 6 files changed, 195 insertions(+), 20 deletions(-) create mode 100755 tools/testing/selftests/drivers/net/bonding/bond_ipsec_offload.sh -- 2.46.0

6 months, 2 weeks

4
15
0 0

[PATCH net-next v8 0/8] Some pktgen fixes/improvments (part II)

by Peter Seiderer

While taking a look at '[PATCH net] pktgen: Avoid out-of-range in get_imix_entries' ([1]) and '[PATCH net v2] pktgen: Avoid out-of-bounds access in get_imix_entries' ([2], [3]) and doing some tests and code review I detected that the /proc/net/pktgen/... parsing logic does not honour the user given buffer bounds (resulting in out-of-bounds access). This can be observed e.g. by the following simple test (sometimes the old/'longer' previous value is re-read from the buffer): $ echo add_device lo@0 > /proc/net/pktgen/kpktgend_0 $ echo "min_pkt_size 12345" > /proc/net/pktgen/lo\@0 && grep min_pkt_size /proc/net/pktgen/lo\@0 Params: count 1000 min_pkt_size: 12345 max_pkt_size: 0 Result: OK: min_pkt_size=12345 $ echo -n "min_pkt_size 123" > /proc/net/pktgen/lo\@0 && grep min_pkt_size /proc/net/pktgen/lo\@0 Params: count 1000 min_pkt_size: 12345 max_pkt_size: 0 Result: OK: min_pkt_size=12345 $ echo "min_pkt_size 123" > /proc/net/pktgen/lo\@0 && grep min_pkt_size /proc/net/pktgen/lo\@0 Params: count 1000 min_pkt_size: 123 max_pkt_size: 0 Result: OK: min_pkt_size=123 So fix the out-of-bounds access (and some minor findings) and add a simple proc_net_pktgen selftest... Patch set splited into part I (now already applied to net-next) - net: pktgen: replace ENOTSUPP with EOPNOTSUPP - net: pktgen: enable 'param=value' parsing - net: pktgen: fix hex32_arg parsing for short reads - net: pktgen: fix 'rate 0' error handling (return -EINVAL) - net: pktgen: fix 'ratep 0' error handling (return -EINVAL) - net: pktgen: fix ctrl interface command parsing - net: pktgen: fix access outside of user given buffer in pktgen_thread_write() nd part II (this one): - net: pktgen: use defines for the various dec/hex number parsing digits lengths - net: pktgen: fix mix of int/long - net: pktgen: remove extra tmp variable (re-use len instead) - net: pktgen: remove some superfluous variable initializing - net: pktgen: fix mpls maximum labels list parsing - net: pktgen: fix access outside of user given buffer in pktgen_if_write() - net: pktgen: fix mpls reset parsing - net: pktgen: remove all superfluous index assignements - selftest: net: add proc_net_pktgen Regards, Peter Changes v7 -> v8: - rebased on actual net-next/main - add rev-by Simon Horman - net: pktgen: fix mpls maximum labels list parsing - slightly rephrase commit message, omit '/16' (suggested by Paolo Abeni) - net: pktgen: fix mpls reset parsing - fix c99 comment (suggested by Paolo Abeni) - selftest: net: add proc_net_pktgen - fix c99 comments (suggested by Paolo Abeni) Changes v6 -> v7: - rebased on actual net-next/main - selftest: net: add proc_net_pktgen - fixed conflict in tools/testing/selftests/net/config Changes v5 -> v6: - add rev-by Simon Horman - drop patch 'net: pktgen: use defines for the various dec/hex number parsing digits lengths' - adjust to dropped patch 'net: pktgen: use defines for the various dec/hex number parsing digits lengths' - net: pktgen: fix mix of int/long - fix line break (suggested by Simon Horman) Changes v4 -> v5: - split up patchset into part i/ii (suggested by Simon Horman) - add rev-by Simon Horman - net: pktgen: align some variable declarations to the most common pattern -> net: pktgen: fix mix of int/long - instead of align to most common pattern (int) adjust all usages to size_t for i and max and ssize_t for len and adjust function signatures of hex32_arg(), count_trail_chars(), num_arg() and strn_len() accordingly - respect reverse xmas tree order for local variable declarations (where possible without too much code churn) - update subject line and patch description - dropped net: pktgen: hex32_arg/num_arg error out in case no characters are available - keep empty hex/num arg is implicit assumed as zero value - dropped net: pktgen: num_arg error out in case no valid character is parsed - keep empty hex/num arg is implicit assumed as zero value - Change patch description ('Fixes:' -> 'Addresses the following:', suggested by Simon Horman) - net: pktgen: remove all superfluous index assignements - new patch (suggested by Simon Horman) - selftest: net: add proc_net_pktgen - addapt to dropped patch 'net: pktgen: hex32_arg/num_arg error out in case no characters are available', empty hex/num arg is now implicit assumed as zero value (instead of failure) Changes v3 -> v4: - add rev-by Simon Horman - new patch 'net: pktgen: use defines for the various dec/hex number parsing digits lengths' (suggested by Simon Horman) - replace C99 comment (suggested by Paolo Abeni) - drop available characters check in strn_len() (suggested by Paolo Abeni) - factored out patch 'net: pktgen: align some variable declarations to the most common pattern' (suggested by Paolo Abeni) - factored out patch 'net: pktgen: remove extra tmp variable (re-use len instead)' (suggested by Paolo Abeni) - factored out patch 'net: pktgen: remove some superfluous variable initializing' (suggested by Paolo Abeni) - factored out patch 'net: pktgen: fix mpls maximum labels list parsing' (suggested by Paolo Abeni) - factored out 'net: pktgen: hex32_arg/num_arg error out in case no characters are available' (suggested by Paolo Abeni) - factored out 'net: pktgen: num_arg error out in case no valid character is parsed' (suggested by Paolo Abeni) Changes v2 -> v3: - new patch: 'net: pktgen: fix ctrl interface command parsing' - new patch: 'net: pktgen: fix mpls reset parsing' - tools/testing/selftests/net/proc_net_pktgen.c: - fix typo in change description ('v1 -> v1' and tyop) - rename some vars to better match usage add_loopback_0 -> thr_cmd_add_loopback_0 rm_loopback_0 -> thr_cmd_rm_loopback_0 wrong_ctrl_cmd -> wrong_thr_cmd legacy_ctrl_cmd -> legacy_thr_cmd ctrl_fd -> thr_fd - add ctrl interface tests Changes v1 -> v2: - new patch: 'net: pktgen: fix hex32_arg parsing for short reads' - new patch: 'net: pktgen: fix 'rate 0' error handling (return -EINVAL)' - new patch: 'net: pktgen: fix 'ratep 0' error handling (return -EINVAL)' - net/core/pktgen.c: additional fix get_imix_entries() and get_labels() - tools/testing/selftests/net/proc_net_pktgen.c: - fix typo not vs. nod (suggested by Jakub Kicinski) - fix misaligned line (suggested by Jakub Kicinski) - enable fomerly commented out CONFIG_XFRM dependent test (command spi), as CONFIG_XFRM is enabled via tools/testing/selftests/net/config CONFIG_XFRM_INTERFACE/CONFIG_XFRM_USER (suggestex by Jakub Kicinski) - add CONFIG_NET_PKTGEN=m to tools/testing/selftests/net/config (suggested by Jakub Kicinski) - add modprobe pktgen to FIXTURE_SETUP() (suggested by Jakub Kicinski) - fix some checkpatch warnings (Missing a blank line after declarations) - shrink line length by re-naming some variables (command -> cmd, device -> dev) - add 'rate 0' testcase - add 'ratep 0' testcase [1] https://lore.kernel.org/netdev/20241006221221.3744995-1-artem.chernyshev@re… [2] https://lore.kernel.org/netdev/20250109083039.14004-1-pchelkin@ispras.ru/ [3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… Peter Seiderer (8): net: pktgen: fix mix of int/long net: pktgen: remove extra tmp variable (re-use len instead) net: pktgen: remove some superfluous variable initializing net: pktgen: fix mpls maximum labels list parsing net: pktgen: fix access outside of user given buffer in pktgen_if_write() net: pktgen: fix mpls reset parsing net: pktgen: remove all superfluous index assignements selftest: net: add proc_net_pktgen net/core/pktgen.c | 288 ++++---- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/config | 1 + tools/testing/selftests/net/proc_net_pktgen.c | 646 ++++++++++++++++++ 4 files changed, 805 insertions(+), 131 deletions(-) create mode 100644 tools/testing/selftests/net/proc_net_pktgen.c -- 2.48.1

6 months, 2 weeks

2
9
0 0

[PATCH 0/4] RISC-V KVM PMU fix and selftest improvement

by Atish Patra

This series adds a fix for KVM PMU code and improves the pmu selftest by allowing generating precise number of interrupts. It also provided another additional option to the overflow test that allows user to generate custom number of LCOFI interrupts. Signed-off-by: Atish Patra <atishp(a)rivosinc.com> --- Atish Patra (4): RISC-V: KVM: Disable the kernel perf counter during configure KVM: riscv: selftests: Do not start the counter in the overflow handler KVM: riscv: selftests: Change command line option KVM: riscv: selftests: Allow number of interrupts to be configurable arch/riscv/kvm/vcpu_pmu.c | 1 + tools/testing/selftests/kvm/riscv/sbi_pmu_test.c | 81 ++++++++++++++++-------- 2 files changed, 57 insertions(+), 25 deletions(-) --- base-commit: 0ad2507d5d93f39619fc42372c347d6006b64319 change-id: 20250225-kvm_pmu_improve-fffd038b2404 -- Regards, Atish patra

6 months, 2 weeks

3
11
0 0

[PATCH net-next] selftests: net: report output format as TAP 13 in Python tests

by Jakub Kicinski

The Python lib based tests report that they are producing "KTAP version 1", but really we aren't making use of any KTAP features, like subtests. Our output is plain TAP. Report TAP 13 instead of KTAP 1, this is what mptcp tests do, and what NIPA knows how to parse best. For HW testing we need precise subtest result tracking. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: petrm(a)nvidia.com CC: matttbe(a)kernel.org CC: willemb(a)google.com CC: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/drivers/net/README.rst | 4 ++-- tools/testing/selftests/net/lib/py/ksft.py | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/drivers/net/README.rst b/tools/testing/selftests/drivers/net/README.rst index 3b6a29e6564b..eb838ae94844 100644 --- a/tools/testing/selftests/drivers/net/README.rst +++ b/tools/testing/selftests/drivers/net/README.rst @@ -107,7 +107,7 @@ Example 1..1 # timeout set to 45 # selftests: drivers/net: ping.py - # KTAP version 1 + # TAP version 13 # 1..3 # ok 1 ping.test_v4 # ok 2 ping.test_v6 @@ -128,7 +128,7 @@ Example Run the test:: [/root] # ./ksft-net-drv/drivers/net/ping.py - KTAP version 1 + TAP version 13 1..3 ok 1 ping.test_v4 ok 2 ping.test_v6 # SKIP Test requires IPv6 connectivity diff --git a/tools/testing/selftests/net/lib/py/ksft.py b/tools/testing/selftests/net/lib/py/ksft.py index fd23349fa8ca..3cfad0fd4570 100644 --- a/tools/testing/selftests/net/lib/py/ksft.py +++ b/tools/testing/selftests/net/lib/py/ksft.py @@ -207,7 +207,7 @@ KSFT_DISRUPTIVE = True totals = {"pass": 0, "fail": 0, "skip": 0, "xfail": 0} - print("KTAP version 1") + print("TAP version 13") print("1.." + str(len(cases))) global KSFT_RESULT -- 2.48.1

6 months, 2 weeks

3
3
0 0

[PATCH bpf-next v2 00/10] selftests/bpf: Migrate test_tunnel.sh to test_progs

by Bastien Curutchet (eBPF Foundation)

Hi all, This patch series continues the work to migrate the *.sh tests into prog_tests framework. The test_tunnel.sh script has already been partly migrated to test_progs in prog_tests/test_tunnel.c so I add my work to it. PATCH 1 & 2 create some helpers to avoid code duplication and ease the migration in the following patches. PATCH 3 to 9 migrate the tests of gre, ip6gre, erspan, ip6erspan, geneve, ip6geneve and ip6tnl tunnels. PATCH 10 removes test_tunnel.sh Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet(a)bootlin.com> --- Changes in v2: - PATCH 1: Move tc_hook definition to attatch_tc_prog() - PATCH 4: Disable DAD through `ip addr` - Link to v1: https://lore.kernel.org/r/20250227-tunnels-v1-0-33df5c30aa04@bootlin.com --- Bastien Curutchet (eBPF Foundation) (10): selftests/bpf: test_tunnel: Add generic_attach* helpers selftests/bpf: test_tunnel: Add ping helpers selftests/bpf: test_tunnel: Move gre tunnel test to test_progs selftests/bpf: test_tunnel: Move ip6gre tunnel test to test_progs selftests/bpf: test_tunnel: Move erspan tunnel tests to test_progs selftests/bpf: test_tunnel: Move ip6erspan tunnel test to test_progs selftests/bpf: test_tunnel: Move geneve tunnel test to test_progs selftests/bpf: test_tunnel: Move ip6geneve tunnel test to test_progs selftests/bpf: test_tunnel: Move ip6tnl tunnel tests to test_progs selftests/bpf: test_tunnel: Remove test_tunnel.sh tools/testing/selftests/bpf/Makefile | 1 - .../testing/selftests/bpf/prog_tests/test_tunnel.c | 633 ++++++++++++++++---- tools/testing/selftests/bpf/test_tunnel.sh | 645 --------------------- 3 files changed, 530 insertions(+), 749 deletions(-) --- base-commit: 97b4501198b918f1d0adeb8205004d64f780e472 change-id: 20250131-tunnels-59b641ea3f10 Best regards, -- Bastien Curutchet (eBPF Foundation) <bastien.curutchet(a)bootlin.com>

6 months, 2 weeks

3
13
0 0

[PATCH bpf-next v4 0/6] XDP metadata support for tun driver

by Marcus Wichelmann

Hi all, this series contains some improvements for the selftest patches. The other patches remain unchanged. Please check the changelist below. I have reverted the addition of the NOARP flag from the previous version, as it was not effective and the CI was still failing occasionally because of the race condition caused by foreign packets interfering with the veth tests. This series contains an alternative solution by filtering all but the test packets using the attached XDP program. Successful pipeline: https://github.com/kernel-patches/bpf/actions/runs/13552017584 --- v4: - strip unrelated changes from the selftest patches - extend commit message for "selftests/bpf: refactor xdp_context_functional test and bpf program" - the NOARP flag was not effective to prevent other packets from interfering with the tests, add a filter to the XDP program instead - run xdp_context_tuntap in a separate namespace to avoid conflicts with other tests v3: https://lore.kernel.org/bpf/20250224152909.3911544-1-marcus.wichelmann@hetz… - change the condition to handle xdp_buffs without metadata support, as suggested by Willem de Bruijn <willemb(a)google.com> - add clarifying comment why that condition is needed - set NOARP flag in selftests to ensure that the kernel does not send packets on the test interfaces that may interfere with the tests v2: https://lore.kernel.org/bpf/20250217172308.3291739-1-marcus.wichelmann@hetz… - submit against bpf-next subtree - split commits and improved commit messages - remove redundant metasize check and add clarifying comment instead - use max() instead of ternary operator - add selftest for metadata support in the tun driver v1: https://lore.kernel.org/all/20250130171614.1657224-1-marcus.wichelmann@hetz… Marcus Wichelmann (6): net: tun: enable XDP metadata support net: tun: enable transfer of XDP metadata to skb selftests/bpf: move open_tuntap to network helpers selftests/bpf: refactor xdp_context_functional test and bpf program selftests/bpf: add test for XDP metadata support in tun driver selftests/bpf: fix file descriptor assertion in open_tuntap helper drivers/net/tun.c | 28 +++- tools/testing/selftests/bpf/network_helpers.c | 28 ++++ tools/testing/selftests/bpf/network_helpers.h | 3 + .../selftests/bpf/prog_tests/lwt_helpers.h | 29 ---- .../bpf/prog_tests/xdp_context_test_run.c | 138 +++++++++++++++++- .../selftests/bpf/progs/test_xdp_meta.c | 53 +++++-- 6 files changed, 223 insertions(+), 56 deletions(-) -- 2.43.0

6 months, 2 weeks

5
14
0 0

[PATCH net-next v20 00/25] Introducing OpenVPN Data Channel Offload

by Antonio Quartulli

After some time of struggle trying to fix all hidden bugs that Sabrina has found...here is v20! Notable changes since v19: * copyright years updated to 2025 * rtnl_link_ops.newlink adapted to new signature * removed admindown del-peer-reason attribute from netlink API (it should have gone away in v19 already) * removed asynchronous socket cleanup. All cleanup now happens in the same context as the peer removal. I used a "deferred list" to collect all peers that needed socket release and traversed it after releasing the socket. This wasy there was no need to spawn workers to leave the atomic context. Code looks way more linear now * provided implementation for sk_prot->close() in order to catch when userspace is releasing a socet and act accordingly. This way we can avoid the dangling netns problem discussed in v19 * due to the previous item, it is now expected that the process that created a socket stays alive all time long. * kselftest scripts have been re-arranged as per the previous item in order to keep ovpn-cli processes alive in background during the tests * improved TCP shutdown coordination across involved components * fixed false deadlock reporting by using nested lock class (thanks a lot to Sean Anderson!) * exported udpv6_prot via EXPORT_SYMBOL_GPL * merged patch for exporting inet6_stream_ops with its user * moved TCP code that may sleep during detach out of lock_sock area * reverted tcp_release_cb to EXPORT_SYMBOL * improved kselftest Makefile to allow kselftest_deps.sh to detect all dependencies Please note that some patches were already reviewed/tested by a few people. These patches have retained the tags as they have hardly been touched. (Due to the amount of changes applied to the kselftest scripts, I dropped the Reviewed-by Shuah Khan tag on that specific patch) The latest code can also be found at: https://github.com/OpenVPN/ovpn-net-next Thanks a lot! Best Regards, Antonio Quartulli OpenVPN Inc. --- Antonio Quartulli (25): mailmap: remove unwanted entry for Antonio Quartulli net: introduce OpenVPN Data Channel Offload (ovpn) ovpn: add basic netlink support ovpn: add basic interface creation/destruction/management routines ovpn: keep carrier always on for MP interfaces ovpn: introduce the ovpn_peer object ovpn: introduce the ovpn_socket object ovpn: implement basic TX path (UDP) ovpn: implement basic RX path (UDP) ovpn: implement packet processing ovpn: store tunnel and transport statistics ovpn: implement TCP transport skb: implement skb_send_sock_locked_with_flags() ovpn: add support for MSG_NOSIGNAL in tcp_sendmsg ovpn: implement multi-peer support ovpn: implement peer lookup logic ovpn: implement keepalive mechanism ovpn: add support for updating local UDP endpoint ovpn: add support for peer floating ovpn: implement peer add/get/dump/delete via netlink ovpn: implement key add/get/del/swap via netlink ovpn: kill key and notify userspace in case of IV exhaustion ovpn: notify userspace when a peer is deleted ovpn: add basic ethtool support testing/selftests: add test tool and scripts for ovpn module .mailmap | 1 - Documentation/netlink/specs/ovpn.yaml | 371 +++ Documentation/netlink/specs/rt_link.yaml | 16 + MAINTAINERS | 11 + drivers/net/Kconfig | 15 + drivers/net/Makefile | 1 + drivers/net/ovpn/Makefile | 22 + drivers/net/ovpn/bind.c | 55 + drivers/net/ovpn/bind.h | 101 + drivers/net/ovpn/crypto.c | 211 ++ drivers/net/ovpn/crypto.h | 145 ++ drivers/net/ovpn/crypto_aead.c | 408 ++++ drivers/net/ovpn/crypto_aead.h | 33 + drivers/net/ovpn/io.c | 462 ++++ drivers/net/ovpn/io.h | 34 + drivers/net/ovpn/main.c | 350 +++ drivers/net/ovpn/main.h | 14 + drivers/net/ovpn/netlink-gen.c | 213 ++ drivers/net/ovpn/netlink-gen.h | 41 + drivers/net/ovpn/netlink.c | 1249 ++++++++++ drivers/net/ovpn/netlink.h | 18 + drivers/net/ovpn/ovpnpriv.h | 57 + drivers/net/ovpn/peer.c | 1341 +++++++++++ drivers/net/ovpn/peer.h | 163 ++ drivers/net/ovpn/pktid.c | 129 ++ drivers/net/ovpn/pktid.h | 87 + drivers/net/ovpn/proto.h | 118 + drivers/net/ovpn/skb.h | 61 + drivers/net/ovpn/socket.c | 241 ++ drivers/net/ovpn/socket.h | 53 + drivers/net/ovpn/stats.c | 21 + drivers/net/ovpn/stats.h | 47 + drivers/net/ovpn/tcp.c | 571 +++++ drivers/net/ovpn/tcp.h | 36 + drivers/net/ovpn/udp.c | 478 ++++ drivers/net/ovpn/udp.h | 27 + include/linux/skbuff.h | 2 + include/uapi/linux/if_link.h | 15 + include/uapi/linux/ovpn.h | 110 + include/uapi/linux/udp.h | 1 + net/core/skbuff.c | 18 +- net/ipv4/tcp_output.c | 2 +- net/ipv6/af_inet6.c | 1 + net/ipv6/udp.c | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/net/ovpn/.gitignore | 2 + tools/testing/selftests/net/ovpn/Makefile | 31 + tools/testing/selftests/net/ovpn/common.sh | 92 + tools/testing/selftests/net/ovpn/config | 10 + tools/testing/selftests/net/ovpn/data64.key | 5 + tools/testing/selftests/net/ovpn/ovpn-cli.c | 2395 ++++++++++++++++++++ tools/testing/selftests/net/ovpn/tcp_peers.txt | 5 + .../testing/selftests/net/ovpn/test-chachapoly.sh | 9 + .../selftests/net/ovpn/test-close-socket-tcp.sh | 9 + .../selftests/net/ovpn/test-close-socket.sh | 45 + tools/testing/selftests/net/ovpn/test-float.sh | 9 + tools/testing/selftests/net/ovpn/test-tcp.sh | 9 + tools/testing/selftests/net/ovpn/test.sh | 113 + tools/testing/selftests/net/ovpn/udp_peers.txt | 5 + 59 files changed, 10084 insertions(+), 7 deletions(-) --- base-commit: 91c8d8e4b7a38dc099b26e14b22f814ca4e75089 change-id: 20241002-b4-ovpn-eeee35c694a2 Best regards, -- Antonio Quartulli <antonio(a)openvpn.net>

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[v3 PATCH 0/2] KVM: guest_memfd: use write for population

by Nikita Kalyazin

This series is rebased on top of Fuad's v4 for shared mapping of guest_memfd [1]. Change since v2 [2]: - David/Mike D: Only compile support for the write syscall if CONFIG_KVM_GMEM_SHARED_MEM introduced in [1] is enabled. In non-CoCo use cases where the host can access guest memory, guest_memfd can be allocated and populated via the write syscall. Even though the same can also be achieved via userspace mapping and memcpy from userspace, write provides a more performant option because it 1) avoids double initialisation as the kernel does not need to zero pages and 2) does not require setting up page tables. Nikita [1] https://lore.kernel.org/kvm/20250218172500.807733-4-tabba@google.com/T/ [2] https://lore.kernel.org/kvm/20241129123929.64790-1-kalyazin@amazon.com/T/ Nikita Kalyazin (2): KVM: guest_memfd: add generic population via write KVM: selftests: update guest_memfd write tests .../testing/selftests/kvm/guest_memfd_test.c | 85 +++++++++++++++-- virt/kvm/guest_memfd.c | 94 ++++++++++++++++++- 2 files changed, 170 insertions(+), 9 deletions(-) base-commit: 005f6404708d430abab7fab9b422d0daf6e0c2fe -- 2.47.1

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Linux-kselftest-mirror