mirror of
https://github.com/torvalds/linux.git
synced 2026-08-01 03:59:40 +02:00
Linux kernel source tree
76f06cbd7b
David Wei says: ==================== netdevsim: link and forward skbs between ports This patchset adds the ability to link two netdevsim ports together and forward skbs between them, similar to veth. The goal is to use netdevsim for testing features e.g. zero copy Rx using io_uring. This feature was tested locally on QEMU, and a selftest is included. I ran netdev selftests CI style and all tests but the following passed: - gro.sh - l2tp.sh - ip_local_port_range.sh gro.sh fails because virtme-ng mounts as read-only and it tries to write to log.txt. This issue was reported to virtme-ng upstream. l2tp.sh and ip_local_port_range.sh both fail for me on net-next/main as well. --- v13->v14: - implement ndo_get_iflink() - fix returning 0 if peer is already linked during linking or not linked during unlinking - bump dropped counter if nsim_ipsec_tx() fails and generally reorder nsim_start_xmit() - fix overflowing lines and indentations v12->v13: - wait for socat listening port to be ready before sending data in selftest v11->v12: - fix leaked netns refs - fix rtnetlink.sh kci_test_ipsec_offload() selftest v10->v11: - add udevadm settle after creating netdevsims in selftest v9->v10: - fix not freeing skb when not there is no peer - prevent possible id clashes in selftest - cleanup selftest on error paths v8->v9: - switch to getting netns using fd rather than id - prevent linking a netdevsim to itself - update tests v7->v8: - fix not dereferencing RCU ptr using rcu_dereference() - remove unused variables in selftest v6->v7: - change link syntax to netnsid:ifidx - replace dev_get_by_index() with __dev_get_by_index() - check for NULL peer when linking - add a sysfs attribute for unlinking - only update Tx stats if not dropped - update selftest v5->v6: - reworked to link two netdevsims using sysfs attribute on the bus device instead of debugfs due to deadlock possibility if a netdevsim is removed during linking - removed unnecessary patch maintaining a list of probed nsim_devs - updated selftest v4->v5: - reduce nsim_dev_list_lock critical section - fixed missing mutex unlock during unwind ladder - rework nsim_dev_peer_write synchronization to take devlink lock as well as rtnl_lock - return err msgs to user during linking if port doesn't exist or linking to self - update tx stats outside of RCU lock v3->v4: - maintain a mutex protected list of probed nsim_devs instead of using nsim_bus_dev - fixed synchronization issues by taking rtnl_lock - track tx_dropped skbs v2->v3: - take lock when traversing nsim_bus_dev_list - take device ref when getting a nsim_bus_dev - return 0 if nsim_dev_peer_read cannot find the port - address code formatting - do not hard code values in selftests - add Makefile for selftests v1->v2: - renamed debugfs file from "link" to "peer" - replaced strstep() with sscanf() for consistency - increased char[] buf sz to 22 for copying id + port from user - added err msg w/ expected fmt when linking as a hint to user - prevent linking port to itself - protect peer ptr using RCU ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.