kernel/linux.git/net/batman-adv, branch v7.0-rc1

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

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

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-10-31T13:46:03+00:00

Cross-merge networking fixes after downstream PR (net-6.18-rc4). No conflicts, adjacent changes: drivers/net/ethernet/stmicro/stmmac/stmmac_main.c ded9813d17d3 ("net: stmmac: Consider Tx VLAN offload tag length for maxSDU") 26ab9830beab ("net: stmmac: replace has_xxxx with core_type") Signed-off-by: Jakub Kicinski

Merge tag 'batadv-net-pullrequest-20251024' of https://git.open-mesh.org/linux-merge

2025-10-28T01:00:54+00:00

Simon Wunderlich says: ==================== Here is a batman-adv bugfix: - release references to inactive interfaces, by Sven Eckelmann * tag 'batadv-net-pullrequest-20251024' of https://git.open-mesh.org/linux-merge: batman-adv: Release references to inactive interfaces ==================== Link: https://patch.msgid.link/20251024091150.231141-1-sw@simonwunderlich.de Signed-off-by: Jakub Kicinski

batman-adv: use skb_crc32c() instead of skb_seq_read()

2025-10-17T14:30:43+00:00

Make batadv_bla_check_duplist() just use the new function skb_crc32c(), instead of calling skb_seq_read() with crc32c(). This is faster and simpler. Suggested-by: Eric Biggers Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: Start new development cycle

2025-10-17T14:30:43+00:00

This version will contain all the (major or even only minor) changes for Linux 6.19. The version number isn't a semantic version number with major and minor information. It is just encoding the year of the expected publishing as Linux -rc1 and the number of published versions this year (starting at 0). Signed-off-by: Simon Wunderlich

batman-adv: Release references to inactive interfaces

2025-09-27T17:59:49+00:00

Trying to dump the originators or the neighbors via netlink for a meshif with an inactive primary interface is not allowed. The dump functions were checking this correctly but they didn't handle non-existing primary interfaces and existing _inactive_ interfaces differently. (Primary) batadv_hard_ifaces hold a references to a net_device. And accessing them is only allowed when either being in a RCU/spinlock protected section or when holding a valid reference to them. The netlink dump functions use the latter. But because the missing specific error handling for inactive primary interfaces, the reference was never dropped. This reference counting error was only detected when the interface should have been removed from the system: unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2 Cc: stable@vger.kernel.org Fixes: 6ecc4fd6c2f4 ("batman-adv: netlink: reduce duplicate code by returning interfaces") Reported-by: syzbot+881d65229ca4f9ae8c84@syzkaller.appspotmail.com Reported-by: Tetsuo Handa Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: remove includes for extern declarations

2025-09-05T13:11:02+00:00

It is not necessary to include the header for the struct definition for an "extern " declaration. It can simply be dropped from the headers to reduce the number of includes the preprocessor has to process. If needed, it can be added to the actual C source file. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: keep skb crc32 helper local in BLA

2025-09-05T13:11:02+00:00

The batadv_skb_crc32() helper was shared between Bridge Loop Avoidance and Network Coding. With the removal of the network coding feature, it is possible to just move this helper directly to Bridge Loop Avoidance. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: remove network coding support

2025-09-05T13:11:00+00:00

The Network Coding feature, introduced in 2013, is based on the master thesis "Inter-Flow Network Coding for Wireless Mesh Networks". It relies on the assumption that neighboring mesh nodes can reliably overhear each other's transmissions in promiscuous mode, allowing packets to be combined to reduce forwarding overhead. This assumption no longer holds for modern wireless mesh networks, which are heterogeneous and make overhearing increasingly unreliable. Factors such as multiple spatial streams, varying data rates, beamforming, and OFDMA all prevent nodes from consistently overhearing each other. The current implementation in batman-adv is not able to detect these conditions and would require a more complex layer beyond its neighbor discovery process to do so. In addition, the feature has been unmaintained for years and is discouraged for use. None of the current maintainers have the required test setup to verify its functionality, and known issues remain in its data structures (reference counting, RCU usage, and cleanup handling). Its continued presence also blocks necessary refactoring of the core originator infrastructure. Remove this obsolete and unmaintained feature. Signed-off-by: Sven Eckelmann Acked-by: Martin Hundebøll Acked-by: Marek Lindner Signed-off-by: Simon Wunderlich

batman-adv: Start new development cycle

2025-09-05T13:10:47+00:00

This version will contain all the (major or even only minor) changes for Linux 6.18. The version number isn't a semantic version number with major and minor information. It is just encoding the year of the expected publishing as Linux -rc1 and the number of published versions this year (starting at 0). Signed-off-by: Simon Wunderlich