Magnus Karlsson 7fcf26b315 Revert "xsk: Support redirect to any socket bound to the same umem" ... This reverts commit 2863d665ea. This patch introduced a potential kernel crash when multiple napi instances redirect to the same AF_XDP socket. By removing the queue_index check, it is possible for multiple napi instances to access the Rx ring at the same time, which will result in a corrupted ring state which can lead to a crash when flushing the rings in __xsk_flush(). This can happen when the linked list of sockets to flush gets corrupted by concurrent accesses. A quick and small fix is not possible, so let us revert this for now. Reported-by: Yuval El-Hanany <YuvalE@radware.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/xdp-newbies/8100DBDC-0B7C-49DB-9995-6027F6E63147@radware.com Link: https://lore.kernel.org/bpf/20240604122927.29080-2-magnus.karlsson@gmail.com		2024-06-05 09:42:30 +02:00
..
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	xsk: Introduce AF_XDP buffer allocation API	2020-05-21 17:31:26 -07:00
xdp_umem.c	xsk: Add option to calculate TX checksum in SW	2023-11-29 14:59:40 -08:00
xdp_umem.h	xsk: Fix umem cleanup bug at socket destruct	2020-11-20 15:52:39 +01:00
xsk_buff_pool.c	xsk: use generic DMA sync shortcut instead of a custom one	2024-05-08 08:51:20 +02:00
xsk_diag.c	sock_diag: add module pointer to "struct sock_diag_handler"	2024-01-23 15:13:54 +01:00
xsk_queue.c	xdp: Fix zero-size allocation warning in xskq_create()	2023-10-09 16:13:29 +02:00
xsk_queue.h	xsk: Add TX timestamp and TX checksum offload support	2023-11-29 14:59:40 -08:00
xsk.c	Revert "xsk: Support redirect to any socket bound to the same umem"	2024-06-05 09:42:30 +02:00
xsk.h	xdp: Add proper __rcu annotations to redirect map entries	2021-06-24 19:41:15 +02:00
xskmap.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00