Revision tags: v6.6.67, v6.6.66, v6.6.65, v6.6.64, v6.6.63, v6.6.62, v6.6.61, v6.6.60, v6.6.59, v6.6.58, v6.6.57, v6.6.56, v6.6.55, v6.6.54, v6.6.53, v6.6.52, v6.6.51, v6.6.50, v6.6.49, v6.6.48, v6.6.47, v6.6.46, v6.6.45, v6.6.44, v6.6.43, v6.6.42, v6.6.41, v6.6.40, v6.6.39, v6.6.38, v6.6.37, v6.6.36, v6.6.35, v6.6.34, v6.6.33, v6.6.32, v6.6.31, v6.6.30, v6.6.29, v6.6.28, v6.6.27, v6.6.26, v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13 |
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#
7ae9fb1b |
| 21-Feb-2023 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 6.3 merge window.
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Revision tags: v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8 |
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6f849817 |
| 19-Jan-2023 |
Thomas Zimmermann <tzimmermann@suse.de> |
Merge drm/drm-next into drm-misc-next
Backmerging into drm-misc-next to get DRM accelerator infrastructure, which is required by ipuv driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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Revision tags: v6.1.7 |
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d0e99511 |
| 17-Jan-2023 |
Kalle Valo <kvalo@kernel.org> |
Merge wireless into wireless-next
Due to the two cherry picked commits from wireless to wireless-next we have several conflicts in mt76. To avoid any bugs with conflicts merge wireless into wireless
Merge wireless into wireless-next
Due to the two cherry picked commits from wireless to wireless-next we have several conflicts in mt76. To avoid any bugs with conflicts merge wireless into wireless-next.
96f134dc1964 wifi: mt76: handle possible mt76_rx_token_consume failures fe13dad8992b wifi: mt76: dma: do not increment queue head if mt76_dma_add_buf fails
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Revision tags: v6.1.6, v6.1.5, v6.0.19 |
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#
407da561 |
| 09-Jan-2023 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v6.2-rc3' into next
Merge with mainline to bring in timer_shutdown_sync() API.
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Revision tags: v6.0.18, v6.1.4 |
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4aea86b4 |
| 05-Jan-2023 |
Jakub Kicinski <kuba@kernel.org> |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Revision tags: v6.1.3, v6.0.17 |
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2c55d703 |
| 03-Jan-2023 |
Maxime Ripard <maxime@cerno.tech> |
Merge drm/drm-fixes into drm-misc-fixes
Let's start the fixes cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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0d8eae7b |
| 02-Jan-2023 |
Jani Nikula <jani.nikula@intel.com> |
Merge drm/drm-next into drm-intel-next
Sync up with v6.2-rc1.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Revision tags: v6.1.2, v6.0.16 |
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7e45f809 |
| 30-Dec-2022 |
Andrew Morton <akpm@linux-foundation.org> |
Merge branch 'master' into mm-nonmm-stable
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a7383cfb |
| 30-Dec-2022 |
Andrew Morton <akpm@linux-foundation.org> |
Merge branch 'master' into mm-stable
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b501d4dc |
| 30-Dec-2022 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Sync after v6.2-rc1 landed in drm-next.
We need to get some dependencies in place before we can merge the fixes series from Gwan-gyeong and Chris.
Referen
Merge drm/drm-next into drm-intel-gt-next
Sync after v6.2-rc1 landed in drm-next.
We need to get some dependencies in place before we can merge the fixes series from Gwan-gyeong and Chris.
References: https://lore.kernel.org/all/Y6x5JCDnh2rvh4lA@intel.com/ Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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#
6599e683 |
| 28-Dec-2022 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
Merge tag 'v6.2-rc1' into media_tree
Linux 6.2-rc1
* tag 'v6.2-rc1': (14398 commits) Linux 6.2-rc1 treewide: Convert del_timer*() to timer_shutdown*() pstore: Properly assign mem_type propert
Merge tag 'v6.2-rc1' into media_tree
Linux 6.2-rc1
* tag 'v6.2-rc1': (14398 commits) Linux 6.2-rc1 treewide: Convert del_timer*() to timer_shutdown*() pstore: Properly assign mem_type property pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES cfi: Fix CFI failure with KASAN perf python: Fix splitting CC into compiler and options afs: Stop implementing ->writepage() afs: remove afs_cache_netfs and afs_zap_permits() declarations afs: remove variable nr_servers afs: Fix lost servers_outstanding count ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless ALSA: azt3328: Remove the unused function snd_azf3328_codec_outl() gcov: add support for checksum field test_maple_tree: add test for mas_spanning_rebalance() on insufficient data maple_tree: fix mas_spanning_rebalance() on insufficient data hugetlb: really allocate vma lock for all sharable vmas kmsan: export kmsan_handle_urb kmsan: include linux/vmalloc.h mm/mempolicy: fix memory leak in set_mempolicy_home_node system call mm, mremap: fix mremap() expanding vma with addr inside vma ...
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Revision tags: v6.1.1, v6.0.15 |
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#
292a089d |
| 20-Dec-2022 |
Steven Rostedt (Google) <rostedt@goodmis.org> |
treewide: Convert del_timer*() to timer_shutdown*()
Due to several bugs caused by timers being re-armed after they are shutdown and just before they are freed, a new state of timers was added called
treewide: Convert del_timer*() to timer_shutdown*()
Due to several bugs caused by timers being re-armed after they are shutdown and just before they are freed, a new state of timers was added called "shutdown". After a timer is set to this state, then it can no longer be re-armed.
The following script was run to find all the trivial locations where del_timer() or del_timer_sync() is called in the same function that the object holding the timer is freed. It also ignores any locations where the timer->function is modified between the del_timer*() and the free(), as that is not considered a "trivial" case.
This was created by using a coccinelle script and the following commands:
$ cat timer.cocci @@ expression ptr, slab; identifier timer, rfield; @@ ( - del_timer(&ptr->timer); + timer_shutdown(&ptr->timer); | - del_timer_sync(&ptr->timer); + timer_shutdown_sync(&ptr->timer); ) ... when strict when != ptr->timer ( kfree_rcu(ptr, rfield); | kmem_cache_free(slab, ptr); | kfree(ptr); )
$ spatch timer.cocci . > /tmp/t.patch $ patch -p1 < /tmp/t.patch
Link: https://lore.kernel.org/lkml/20221123201306.823305113@linutronix.de/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Pavel Machek <pavel@ucw.cz> [ LED ] Acked-by: Kalle Valo <kvalo@kernel.org> [ wireless ] Acked-by: Paolo Abeni <pabeni@redhat.com> [ networking ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Revision tags: v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71, v5.15.70, v5.15.69, v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64, v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51, v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15 |
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762f99f4 |
| 15-Jan-2022 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.17 merge window.
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Revision tags: v5.16, v5.15.10, v5.15.9, v5.15.8 |
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86329873 |
| 09-Dec-2021 |
Daniel Lezcano <daniel.lezcano@linaro.org> |
Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next
"Add optional variant of of_reset_control_get_exclusive(). If the requested reset is not
Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next
"Add optional variant of of_reset_control_get_exclusive(). If the requested reset is not specified in the device tree, this function returns NULL instead of an error."
This dependency is needed for the Generic Timer Module (a.k.a OSTM) support for RZ/G2L.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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#
5d8dfaa7 |
| 09-Dec-2021 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v5.15' into next
Sync up with the mainline to get the latest APIs and DT bindings.
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Revision tags: v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10 |
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e700ac21 |
| 05-Oct-2021 |
Tony Lindgren <tony@atomide.com> |
Merge branch 'pruss-fix' into fixes
Merge in a fix for pruss reset issue caused by enabling pruss for am335x.
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Revision tags: v5.14.9, v5.14.8, v5.14.7 |
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ffb1e76f |
| 20-Sep-2021 |
Mark Brown <broonie@kernel.org> |
Merge tag 'v5.15-rc2' into spi-5.15
Linux 5.15-rc2
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Revision tags: v5.14.6, v5.10.67, v5.10.66, v5.14.5 |
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d1b803f4 |
| 15-Sep-2021 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-next
Catch-up on 5.15-rc1 and sync with drm-intel-gt-next to prepare the PXP topic branch.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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d5dd580d |
| 15-Sep-2021 |
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Close the divergence which has caused patches not to apply and have a solid baseline for the PXP patches that Rodrigo will send a topic branch PR for.
Sign
Merge drm/drm-next into drm-intel-gt-next
Close the divergence which has caused patches not to apply and have a solid baseline for the PXP patches that Rodrigo will send a topic branch PR for.
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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Revision tags: v5.14.4, v5.10.65 |
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2f765205 |
| 14-Sep-2021 |
Maxime Ripard <maxime@cerno.tech> |
Merge drm/drm-next into drm-misc-next
Kickstart new drm-misc-next cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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Revision tags: v5.14.3, v5.10.64 |
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c2f4954c |
| 10-Sep-2021 |
Thomas Gleixner <tglx@linutronix.de> |
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the struggler in drivers/thermal are gone. So the last user and the deprecated inlines can be rem
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the struggler in drivers/thermal are gone. So the last user and the deprecated inlines can be removed.
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Revision tags: v5.14.2, v5.10.63 |
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8be98d2f |
| 05-Sep-2021 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.15 merge window.
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Revision tags: v5.14.1, v5.10.62 |
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9e9fb765 |
| 31-Aug-2021 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski: "Core:
- Enable memcg accounting for various networking o
Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski: "Core:
- Enable memcg accounting for various networking objects.
BPF:
- Introduce bpf timers.
- Add perf link and opaque bpf_cookie which the program can read out again, to be used in libbpf-based USDT library.
- Add bpf_task_pt_regs() helper to access user space pt_regs in kprobes, to help user space stack unwinding.
- Add support for UNIX sockets for BPF sockmap.
- Extend BPF iterator support for UNIX domain sockets.
- Allow BPF TCP congestion control progs and bpf iterators to call bpf_setsockopt(), e.g. to switch to another congestion control algorithm.
Protocols:
- Support IOAM Pre-allocated Trace with IPv6.
- Support Management Component Transport Protocol.
- bridge: multicast: add vlan support.
- netfilter: add hooks for the SRv6 lightweight tunnel driver.
- tcp: - enable mid-stream window clamping (by user space or BPF) - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD - more accurate DSACK processing for RACK-TLP
- mptcp: - add full mesh path manager option - add partial support for MP_FAIL - improve use of backup subflows - optimize option processing
- af_unix: add OOB notification support.
- ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the router.
- mac80211: Target Wake Time support in AP mode.
- can: j1939: extend UAPI to notify about RX status.
Driver APIs:
- Add page frag support in page pool API.
- Many improvements to the DSA (distributed switch) APIs.
- ethtool: extend IRQ coalesce uAPI with timer reset modes.
- devlink: control which auxiliary devices are created.
- Support CAN PHYs via the generic PHY subsystem.
- Proper cross-chip support for tag_8021q.
- Allow TX forwarding for the software bridge data path to be offloaded to capable devices.
Drivers:
- veth: more flexible channels number configuration.
- openvswitch: introduce per-cpu upcall dispatch.
- Add internet mix (IMIX) mode to pktgen.
- Transparently handle XDP operations in the bonding driver.
- Add LiteETH network driver.
- Renesas (ravb): - support Gigabit Ethernet IP
- NXP Ethernet switch (sja1105): - fast aging support - support for "H" switch topologies - traffic termination for ports under VLAN-aware bridge
- Intel 1G Ethernet - support getcrosststamp() with PCIe PTM (Precision Time Measurement) for better time sync - support Credit-Based Shaper (CBS) offload, enabling HW traffic prioritization and bandwidth reservation
- Broadcom Ethernet (bnxt) - support pulse-per-second output - support larger Rx rings
- Mellanox Ethernet (mlx5) - support ethtool RSS contexts and MQPRIO channel mode - support LAG offload with bridging - support devlink rate limit API - support packet sampling on tunnels
- Huawei Ethernet (hns3): - basic devlink support - add extended IRQ coalescing support - report extended link state
- Netronome Ethernet (nfp): - add conntrack offload support
- Broadcom WiFi (brcmfmac): - add WPA3 Personal with FT to supported cipher suites - support 43752 SDIO device
- Intel WiFi (iwlwifi): - support scanning hidden 6GHz networks - support for a new hardware family (Bz)
- Xen pv driver: - harden netfront against malicious backends
- Qualcomm mobile - ipa: refactor power management and enable automatic suspend - mhi: move MBIM to WWAN subsystem interfaces
Refactor:
- Ambient BPF run context and cgroup storage cleanup.
- Compat rework for ndo_ioctl.
Old code removal:
- prism54 remove the obsoleted driver, deprecated by the p54 driver.
- wan: remove sbni/granch driver"
* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits) net: Add depends on OF_NET for LiteX's LiteETH ipv6: seg6: remove duplicated include net: hns3: remove unnecessary spaces net: hns3: add some required spaces net: hns3: clean up a type mismatch warning net: hns3: refine function hns3_set_default_feature() ipv6: remove duplicated 'net/lwtunnel.h' include net: w5100: check return value after calling platform_get_resource() net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx() net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource() net: mdio-ipq4019: Make use of devm_platform_ioremap_resource() fou: remove sparse errors ipv4: fix endianness issue in inet_rtm_getroute_build_skb() octeontx2-af: Set proper errorcode for IPv4 checksum errors octeontx2-af: Fix static code analyzer reported issues octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg octeontx2-af: Fix loop in free and unmap counter af_unix: fix potential NULL deref in unix_dgram_connect() dpaa2-eth: Replace strlcpy with strscpy octeontx2-af: Use NDC TX for transmit packet data ...
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Revision tags: v5.14, v5.10.61, v5.10.60, v5.10.53, v5.10.52 |
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#
2c080404 |
| 20-Jul-2021 |
David S. Miller <davem@davemloft.net> |
Merge branch 'bridge-vlan-multicast'
Nikolay Aleksandrov says:
==================== net: bridge: multicast: add vlan support
This patchset adds initial per-vlan multicast support, most of the code
Merge branch 'bridge-vlan-multicast'
Nikolay Aleksandrov says:
==================== net: bridge: multicast: add vlan support
This patchset adds initial per-vlan multicast support, most of the code deals with moving to multicast context pointers from bridge/port pointers. That allows us to switch them with the per-vlan contexts when a multicast packet is being processed and vlan multicast snooping has been enabled. That is controlled by a global bridge option added in patch 06 which is off by default (BR_BOOLOPT_MCAST_VLAN_SNOOPING). It is important to note that this option can change only under RTNL and doesn't require multicast_lock, so we need to be careful when retrieving mcast contexts in parallel. For packet processing they are switched only once in br_multicast_rcv() and then used until the packet has been processed. For the most part we need these contexts only to read config values and check if they are disabled. The global mcast state which is maintained consists of querier and router timers, the rest are config options. The port mcast state which is maintained consists of query timer and link to router port list if it's ever marked as a router port. Port multicast contexts _must_ be used only with their respective global contexts, that is a bridge port's mcast context must be used only with bridge's global mcast context and a vlan/port's mcast context must be used only with that vlan's global mcast context due to the router port lists. This way a bridge port can be marked as a router in multiple vlans, but might not be a router in some other vlan. Also this allows us to have per-vlan querier elections, per-vlan queries and basically the whole multicast state becomes per-vlan when the option is enabled. One of the hardest parts is synchronization with vlan's memory management, that is done through a new vlan flag: BR_VLFLAG_MCAST_ENABLED which is changed only under multicast_lock. When a vlan is being destroyed first that flag is removed under the lock, then the multicast context is torn down which includes waiting for any outstanding context timers. Since all of the vlan processing depends on BR_VLFLAG_MCAST_ENABLED it must be checked first if the contexts are vlan and the multicast_lock has been acquired. That is done by all IGMP/MLD packet processing functions and timers. When processing a packet we have RCU so the vlan memory won't be freed, but if the flag is missing we must not process it. The timers are synchronized in the same way with the addition of waiting for them to finish in case they are running after removing the flag under multicast_lock (i.e. they were waiting for the lock). Multicast vlan snooping requires vlan filtering to be enabled, if it's disabled then snooping gets automatically disabled, too. BR_VLFLAG_GLOBAL_MCAST_ENABLED controls if a vlan has BR_VLFLAG_MCAST_ENABLED set which is used in all vlan disabled checks. We need both flags because one is controlled by user-space globally (BR_VLFLAG_GLOBAL_MCAST_ENABLED) and the other is for a particular bridge/vlan or port/vlan entry (BR_VLFLAG_MCAST_ENABLED). Since the latter is also used for synchronization between the multicast and vlan code, and also controlled by BR_VLFLAG_GLOBAL_MCAST_ENABLED we rely on it when checking if a vlan context is disabled. The multicast fast-path has 3 new bit tests on the cache-hot bridge flags field, I didn't observe any measurable difference. I haven't forced either context options to be always disabled when the other type is enabled because the state consists of timers which either expire (router) or don't affect the normal operation. Some options, like the mcast querier one, won't be allowed to change for the disabled context type, that will come with a future patch-set which adds per-vlan querier control.
Another important addition is the global vlan options, so far we had only per bridge/port vlan options but in order to control vlan multicast snooping globally we need to add a new type of global vlan options. They can be changed only on the bridge device and are dumped only when a special flag is set in the dump request. The first global option is vlan mcast snooping control, it controls the vlan BR_VLFLAG_GLOBAL_MCAST_ENABLED private flag. It can be set only on master vlan entries. There will be many more global vlan options in the future both for multicast config and other per-vlan options (e.g. STP).
There's a lot of room for improvements, I'll do some of the initial ones but splitting the state to different contexts opens the door for a lot more. Also any new multicast options become vlan-supported with very little to no effort by using the same contexts.
Short patch description: patches 01-04: initial mcast context add, no functional changes patch 05: adds vlan mcast init and control helpers and uses them on vlan create/destroy patch 06: adds a global bridge mcast vlan snooping knob (default off) patches 07-08: add a helper for users which must derive the contexts based on current bridge and vlan options (e.g. timers) patch 09: adds checks for disabled vlan contexts in packet processing and timers patch 10: adds support for per-vlan querier and tagged queries patch 11: adds router port vlan id in the notifications patches 12-14: add global vlan options support (change, dump, notify) patch 15: adds per-vlan global mcast snooping control
Future patch-sets which build on this one (in order): - vlan state mcast handling - user-space mdb contexts (currently only the bridge contexts are used there) - all bridge multicast config options added per-vlan global and per vlan/port - iproute2 support for all the new uAPIs - selftests
This set has been stress-tested (deleting/adding ports/vlans while changing vlan mcast snooping while processing IGMP/MLD packets), and also has passed all bridge self-tests. I'm sending this set as early as possible since there're a few more related sets that should go in the same release to get proper and full mcast vlan snooping support. ====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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2967eed9 |
| 20-Jul-2021 |
David S. Miller <davem@davemloft.net> |
Merge branch 'bridge-vlan-multicast'
Nikolay Aleksandrov says:
==================== net: bridge: multicast: add vlan support
This patchset adds initial per-vlan multicast support, most of the code
Merge branch 'bridge-vlan-multicast'
Nikolay Aleksandrov says:
==================== net: bridge: multicast: add vlan support
This patchset adds initial per-vlan multicast support, most of the code deals with moving to multicast context pointers from bridge/port pointers. That allows us to switch them with the per-vlan contexts when a multicast packet is being processed and vlan multicast snooping has been enabled. That is controlled by a global bridge option added in patch 06 which is off by default (BR_BOOLOPT_MCAST_VLAN_SNOOPING). It is important to note that this option can change only under RTNL and doesn't require multicast_lock, so we need to be careful when retrieving mcast contexts in parallel. For packet processing they are switched only once in br_multicast_rcv() and then used until the packet has been processed. For the most part we need these contexts only to read config values and check if they are disabled. The global mcast state which is maintained consists of querier and router timers, the rest are config options. The port mcast state which is maintained consists of query timer and link to router port list if it's ever marked as a router port. Port multicast contexts _must_ be used only with their respective global contexts, that is a bridge port's mcast context must be used only with bridge's global mcast context and a vlan/port's mcast context must be used only with that vlan's global mcast context due to the router port lists. This way a bridge port can be marked as a router in multiple vlans, but might not be a router in some other vlan. Also this allows us to have per-vlan querier elections, per-vlan queries and basically the whole multicast state becomes per-vlan when the option is enabled. One of the hardest parts is synchronization with vlan's memory management, that is done through a new vlan flag: BR_VLFLAG_MCAST_ENABLED which is changed only under multicast_lock. When a vlan is being destroyed first that flag is removed under the lock, then the multicast context is torn down which includes waiting for any outstanding context timers. Since all of the vlan processing depends on BR_VLFLAG_MCAST_ENABLED it must be checked first if the contexts are vlan and the multicast_lock has been acquired. That is done by all IGMP/MLD packet processing functions and timers. When processing a packet we have RCU so the vlan memory won't be freed, but if the flag is missing we must not process it. The timers are synchronized in the same way with the addition of waiting for them to finish in case they are running after removing the flag under multicast_lock (i.e. they were waiting for the lock). Multicast vlan snooping requires vlan filtering to be enabled, if it's disabled then snooping gets automatically disabled, too. BR_VLFLAG_GLOBAL_MCAST_ENABLED controls if a vlan has BR_VLFLAG_MCAST_ENABLED set which is used in all vlan disabled checks. We need both flags because one is controlled by user-space globally (BR_VLFLAG_GLOBAL_MCAST_ENABLED) and the other is for a particular bridge/vlan or port/vlan entry (BR_VLFLAG_MCAST_ENABLED). Since the latter is also used for synchronization between the multicast and vlan code, and also controlled by BR_VLFLAG_GLOBAL_MCAST_ENABLED we rely on it when checking if a vlan context is disabled. The multicast fast-path has 3 new bit tests on the cache-hot bridge flags field, I didn't observe any measurable difference. I haven't forced either context options to be always disabled when the other type is enabled because the state consists of timers which either expire (router) or don't affect the normal operation. Some options, like the mcast querier one, won't be allowed to change for the disabled context type, that will come with a future patch-set which adds per-vlan querier control.
Another important addition is the global vlan options, so far we had only per bridge/port vlan options but in order to control vlan multicast snooping globally we need to add a new type of global vlan options. They can be changed only on the bridge device and are dumped only when a special flag is set in the dump request. The first global option is vlan mcast snooping control, it controls the vlan BR_VLFLAG_GLOBAL_MCAST_ENABLED private flag. It can be set only on master vlan entries. There will be many more global vlan options in the future both for multicast config and other per-vlan options (e.g. STP).
There's a lot of room for improvements, I'll do some of the initial ones but splitting the state to different contexts opens the door for a lot more. Also any new multicast options become vlan-supported with very little to no effort by using the same contexts.
Short patch description: patches 01-04: initial mcast context add, no functional changes patch 05: adds vlan mcast init and control helpers and uses them on vlan create/destroy patch 06: adds a global bridge mcast vlan snooping knob (default off) patches 07-08: add a helper for users which must derive the contexts based on current bridge and vlan options (e.g. timers) patch 09: adds checks for disabled vlan contexts in packet processing and timers patch 10: adds support for per-vlan querier and tagged queries patch 11: adds router port vlan id in the notifications patches 12-14: add global vlan options support (change, dump, notify) patch 15: adds per-vlan global mcast snooping control
Future patch-sets which build on this one (in order): - vlan state mcast handling - user-space mdb contexts (currently only the bridge contexts are used there) - all bridge multicast config options added per-vlan global and per vlan/port - iproute2 support for all the new uAPIs - selftests
This set has been stress-tested (deleting/adding ports/vlans while changing vlan mcast snooping while processing IGMP/MLD packets), and also has passed all bridge self-tests. I'm sending this set as early as possible since there're a few more related sets that should go in the same release to get proper and full mcast vlan snooping support. ====================
Signed-off-by: David S. Miller <davem@davemloft.net>
show more ...
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