linux/drivers/infiniband/ulp/ipoib, branch master

ipv6: convert CONFIG_IPV6 to built-in only and clean up Kconfigs

2026-03-29T18:21:22Z

Maintaining a modular IPv6 stack offers image size savings for specific setups, this benefit is outweighed by the architectural burden it imposes on the subsystems on implementation and maintenance. Therefore, drop it. Change CONFIG_IPV6 from tristate to bool. Remove all Kconfig dependencies across the tree that explicitly checked for IPV6=m. In addition, remove MODULE_DESCRIPTION(), MODULE_ALIAS(), MODULE_AUTHOR() and MODULE_LICENSE(). This is also replacing module_init() by device_initcall(). It is not possible to use fs_initcall() as IPv4 does because that creates a race condition on IPv6 addrconf. Finally, modify the default configs from CONFIG_IPV6=m to CONFIG_IPV6=y except for m68k as according to the bloat-o-meter the image is increasing by 330KB~ and that isn't acceptable. Instead, disable IPv6 on this architecture by default. This is aligned with m68k RAM requirements and recommendations [1]. [1] http://www.linux-m68k.org/faq/ram.html Signed-off-by: Fernando Fernandez Mancera Tested-by: Ricardo B. Marlière Acked-by: Krzysztof Kozlowski # arm64 Link: https://patch.msgid.link/20260325120928.15848-2-fmancera@suse.de Signed-off-by: Jakub Kicinski

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00Z

This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

net: remove legacy way to get/set HW timestamp config

2026-01-21T02:21:27Z

With all drivers converted to use ndo_hwstamp callbacks the legacy way can be removed, marking ioctl interface as deprecated. Signed-off-by: Vadim Fedorenko Reviewed-by: Kory Maincent Link: https://patch.msgid.link/20260116062121.1230184-1-vadim.fedorenko@linux.dev Signed-off-by: Jakub Kicinski

IB/IPoIB: Add support for hwtstamp get/set ndos

2025-10-31T23:36:43Z

Add support for the ndo_hwtstamp_get and ndo_hwtstamp_set operations in IPoIB. This allows lower devices to handle hardware timestamp configuration through the new ndos instead of the legacy ioctls. Signed-off-by: Carolina Jubran Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/1761819910-1011051-6-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski

IB/ipoib: Ignore L3 master device

2025-09-18T09:20:48Z

Currently, all master upper netdevices (e.g., bond, VRF) are treated equally. When a VRF netdevice is used over an IPoIB netdevice, the expected netdev resolution is on the lower IPoIB device which has the IP address assigned to it and not the VRF device. The rdma_cm module (CMA) tries to match incoming requests to a particular netdevice. When successful, it also validates that the return path points to the same device by performing a routing table lookup. Currently, the former would resolve to the VRF netdevice, while the latter to the correct lower IPoIB netdevice, leading to failure in rdma_cm. Improve this by ignoring the VRF master netdevice, if it exists, and instead return the lower IPoIB device. Signed-off-by: Vlad Dumitrescu Reviewed-by: Parav Pandit Signed-off-by: Edward Srouji Link: https://patch.msgid.link/20250916111103.84069-5-edwards@nvidia.com Signed-off-by: Leon Romanovsky

RDMA/ipoib: Use parent rdma device net namespace

2025-06-26T12:13:47Z

Use the net namespace of the underlying rdma device. After honoring the rdma device's namespace, the ipoib netdev now also runs in the same net namespace of the rdma device. Add an API to read the net namespace of the rdma device so that ULP such as IPoIB can use it to initialize its netdev. Signed-off-by: Parav Pandit Signed-off-by: Mark Bloch Signed-off-by: Leon Romanovsky

IB/IPoIB: Allow using netdevs that require the instance lock

2025-05-22T16:15:04Z

After the last patch removing vlan_rwsem, it is an incremental step to allow ipoib to work with netdevs that require the instance lock. In several places, netdev_lock() is changed to netdev_lock_ops_to_full() which takes care of not acquiring the lock again when the netdev is already locked. In ipoib_ib_tx_timeout_work() and __ipoib_ib_dev_flush() for HEAVY flushes, the netdev lock is acquired/released. This is needed because these functions end up calling .ndo_stop()/.ndo_open() on subinterfaces, and the device may expect the netdev instance lock to be held. ipoib_set_mode() now explicitly acquires ops lock while manipulating the features, mtu and tx queues. Finally, ipoib_napi_enable()/ipoib_napi_disable() now use the *_locked variants of the napi_enable()/napi_disable() calls and optionally acquire the netdev lock themselves depending on the dev they operate on. Signed-off-by: Cosmin Ratiu Reviewed-by: Carolina Jubran Reviewed-by: Leon Romanovsky Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/1747829342-1018757-4-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski

IB/IPoIB: Replace vlan_rwsem with the netdev instance lock

2025-05-22T16:15:04Z

vlan_rwsem was added more than a decade ago to work around a deadlock involving the original mutex being acquired twice, once from the wq. Subsequent changes then tweaked it to partially protect access to ipoib_dev_priv->child_intfs together with the RTNL. Flushing the wq synchronously was also since then refactored to happen separately. This semaphore unfortunately prevents updating ipoib to work with devices that require the netdev lock, because of lock ordering issues between RTNL, vlan_rwsem and the netdev instance locks of parent and child devices. To uncomplicate things, this commit replaces vlan_rwsem with the netdev instance lock of the parent device. Both parent child_intfs list and the children's list membership in it require holding the parent netdev instance lock. All call paths were carefully reviewed and no-longer-needed ASSERT_RTNL calls were dropped. Some non-trivial changes: - ipoib_match_gid_pkey_addr() now only acquires the instance lock and iterates through child_intfs for the first level of recursion (the parent), as it's not possible to have multiple levels of nested subinterfaces. - ipoib_open() and ipoib_stop() schedule tasks on the global workqueue to open/stop child interfaces to avoid potentially acquiring nested netdev instance locks. To avoid the device going away between the task scheduling and execution, netdev_hold/netdev_put are used. Signed-off-by: Cosmin Ratiu Reviewed-by: Carolina Jubran Reviewed-by: Leon Romanovsky Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/1747829342-1018757-3-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski