linux-stable/net/xdp
Nuno Gonçalves 5f5a7d8d8b xsk: allow remap of fill and/or completion rings
The remap of fill and completion rings was frowned upon as they
control the usage of UMEM which does not support concurrent use.
At the same time this would disallow the remap of these rings
into another process.

A possible use case is that the user wants to transfer the socket/
UMEM ownership to another process (via SYS_pidfd_getfd) and so
would need to also remap these rings.

This will have no impact on current usages and just relaxes the
remap limitation.

Signed-off-by: Nuno Gonçalves <nunog@fr24.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/r/20230324100222.13434-1-nunog@fr24.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-03-25 21:07:35 -07:00
..
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: Expose min chunk size to drivers 2022-09-30 07:55:45 -07:00
xdp_umem.h xsk: Fix umem cleanup bug at socket destruct 2020-11-20 15:52:39 +01:00
xsk.c xsk: allow remap of fill and/or completion rings 2023-03-25 21:07:35 -07:00
xsk.h xdp: Add proper __rcu annotations to redirect map entries 2021-06-24 19:41:15 +02:00
xsk_buff_pool.c xsk: add usage of XDP features flags 2023-02-02 20:48:23 -08:00
xsk_diag.c xsk: Fix possible segfault in xsk umem diagnostics 2020-09-02 16:49:40 +02:00
xsk_queue.c xsk: support use vaddr as ring 2023-02-20 08:22:12 +00:00
xsk_queue.h xsk: support use vaddr as ring 2023-02-20 08:22:12 +00:00
xskmap.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00