[PATCH net-next] xsk: use __xsk_rcv_zc_safe for ZC multi-buffer Rx processing
From: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Date: 2026-03-10 13:30:37
Also in:
bpf
Subsystem:
networking [general], the rest, xdp sockets (af_xdp) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Magnus Karlsson, Maciej Fijalkowski
Commit f620af11c27b ("xsk: avoid double checking against rx queue being
full") addressed a case in copy mode, when working with multi-buffer
xdp_buff, where we were peeking onto XSK Rx queue twice, to find out if
there is a space to produce descriptors.
Adjust ZC path to follow the same principle.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
---
net/xdp/xsk.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index ef265e45810c..cdf93728fcba 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c@@ -196,13 +196,13 @@ static int xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) goto err; } - __xsk_rcv_zc(xs, xskb, len, contd); + __xsk_rcv_zc_safe(xs, xskb, len, contd); xskb_list = &xskb->pool->xskb_list; list_for_each_entry_safe(pos, tmp, xskb_list, list_node) { if (list_is_singular(xskb_list)) contd = 0; len = pos->xdp.data_end - pos->xdp.data; - __xsk_rcv_zc(xs, pos, len, contd); + __xsk_rcv_zc_safe(xs, pos, len, contd); list_del_init(&pos->list_node); }
--
2.43.0