linux-yocto/net/xdp
Maciej Fijalkowski 6b083650a3 xsk: Bump xsk_queue::queue_empty_descs in xp_can_alloc()
We have STAT_FILL_EMPTY test case in xskxceiver that tries to process
traffic with fill queue being empty which currently fails for zero copy
ice driver after it started to use xsk_buff_can_alloc() API. That is
because xsk_queue::queue_empty_descs is currently only increased from
alloc APIs and right now if driver sees that xsk_buff_pool will be
unable to provide the requested count of buffers, it bails out early,
skipping calls to xsk_buff_alloc{_batch}().

Mentioned statistic should be handled in xsk_buff_can_alloc() from the
very beginning, so let's add this logic now. Do it by open coding
xskq_cons_has_entries() and bumping queue_empty_descs in the middle when
fill queue currently has no entries.

Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20240904162808.249160-1-maciej.fijalkowski@intel.com
2024-09-05 15:56:49 +02:00
..
Kconfig
Makefile
xdp_umem.c xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len 2024-07-25 11:57:27 +02:00
xdp_umem.h
xsk_buff_pool.c xsk: Bump xsk_queue::queue_empty_descs in xp_can_alloc() 2024-09-05 15:56:49 +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: Bump xsk_queue::queue_empty_descs in xp_can_alloc() 2024-09-05 15:56:49 +02:00
xsk.c net: Move flush list retrieval to where it is used. 2024-07-02 15:26:57 +02:00
xsk.h
xskmap.c bpf: Centralize permissions checks for all BPF map types 2023-06-19 14:04:04 +02:00