Maciej Fijalkowski 36ee60b569 xsk: validate MTU against usable frame size on bind ... AF_XDP bind currently accepts zero-copy pool configurations without verifying that the device MTU fits into the usable frame space provided by the UMEM chunk. This becomes a problem since we started to respect tailroom which is subtracted from chunk_size (among with headroom). 2k chunk size might not provide enough space for standard 1500 MTU, so let us catch such settings at bind time. Furthermore, validate whether underlying HW will be able to satisfy configured MTU wrt XSK's frame size multiplied by supported Rx buffer chain length (that is exposed via net_device::xdp_zc_max_segs). Fixes: 24ea50127e ("xsk: support mbuf on ZC RX") Reviewed-by: Björn Töpel <bjorn@kernel.org> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://patch.msgid.link/20260402154958.562179-5-maciej.fijalkowski@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2026-04-06 18:43:51 -07:00
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Kconfig
Makefile
xdp_umem.c	xsk: tighten UMEM headroom validation to account for tailroom and min frame	2026-04-06 18:43:51 -07:00
xdp_umem.h
xsk_buff_pool.c	xsk: validate MTU against usable frame size on bind	2026-04-06 18:43:51 -07:00
xsk_diag.c	net: remove sock_i_uid()	2025-06-23 17:04:03 -07:00
xsk_queue.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
xsk_queue.h	xsk: move cq_cached_prod_lock to avoid touching a cacheline in sending path	2026-01-15 10:07:45 +01:00
xsk.c	xsk: respect tailroom for ZC setups	2026-04-06 18:43:51 -07:00
xsk.h	xdp: Add proper __rcu annotations to redirect map entries	2021-06-24 19:41:15 +02:00
xskmap.c	xsk: fix OOB map writes when deleting elements	2024-11-25 14:25:48 -08:00