From: Jason Xing <kerneljasonxing@gmail•com>
To: davem@davemloft•net, edumazet@google•com, kuba@kernel•org,
pabeni@redhat•com, bjorn@kernel•org, magnus.karlsson@intel•com,
maciej.fijalkowski@intel•com, jonathan.lemon@gmail•com,
sdf@fomichev•me, ast@kernel•org, daniel@iogearbox•net,
hawk@kernel•org, john.fastabend@gmail•com
Cc: bpf@vger•kernel.org, netdev@vger•kernel.org,
Jason Xing <kernelxing@tencent•com>
Subject: [PATCH bpf-next v3 0/2] xsk: introduce pre-allocated memory per xsk CQ
Date: Sun, 4 Jan 2026 11:23:11 +0800 [thread overview]
Message-ID: <20260104032313.76121-1-kerneljasonxing@gmail.com> (raw)
From: Jason Xing <kernelxing@tencent•com>
This series was made based on the previous work[1] to fix the issue
without causing too much performance impact through adding a
pre-allocated memory for each xsk.
[1]: commit 30f241fcf52a ("xsk: Fix immature cq descriptor production")
---
v3
link: https://lore.kernel.org/all/20251216052623.2697-1-kerneljasonxing@gmail.com/
1. fix double free of lcq in xsk_clear_local_cq()
2. keep lcq->prod align with cq->cached_prod, which can be found in
xsk_cq_cancel_locked().
3. move xsk_clear_local_cq() from xsk_release() to xsk_destruct() to
avoid crash when using lcq in xsk_destruct_skb() after lcq is already freed.
v2
link: https://lore.kernel.org/all/20251209085950.96231-1-kerneljasonxing@gmail.com/
1. add if condition to test if cq is NULL
2. initialize the prod of local_cq
Jason Xing (2):
xsk: introduce local_cq for each af_xdp socket
xsk: introduce a dedicated local completion queue for each xsk
include/net/xdp_sock.h | 8 ++
net/xdp/xsk.c | 222 +++++++++++++++++++++--------------------
2 files changed, 122 insertions(+), 108 deletions(-)
--
2.41.3
next reply other threads:[~2026-01-04 3:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-04 3:23 Jason Xing [this message]
2026-01-04 3:23 ` [PATCH bpf-next v3 1/2] xsk: introduce local_cq for each af_xdp socket Jason Xing
2026-01-04 3:23 ` [PATCH bpf-next v3 2/2] xsk: introduce a dedicated local completion queue for each xsk Jason Xing
2026-01-04 3:39 ` bot+bpf-ci
2026-01-04 6:22 ` Jason Xing
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