Op 15-02-2025 om 01:09 schreef David Wei:
Set the page pool memory provider for the rx queue configured for zero
copy to io_uring. Then the rx queue is reset using
netdev_rx_queue_restart() and netdev core + page pool will take care of
filling the rx queue from the io_uring zero copy memory provider.
For now, there is only one ifq so its destruction happens implicitly
during io_uring cleanup.
Reviewed-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: David Wei <dw@xxxxxxxxxxx>
---
io_uring/zcrx.c | 49 +++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 41 insertions(+), 8 deletions(-)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index 8833879d94ba..7d24fc98b306 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
[...]
@@ -444,6 +475,8 @@ void io_shutdown_zcrx_ifqs(struct io_ring_ctx *ctx)
if (ctx->ifq)
io_zcrx_scrub(ctx->ifq);
+
+ io_close_queue(ctx->ifq);
If ctx->ifq is NULL (which seems to be not unlikely given the if
statement above)
then you'll get a NULL pointer dereference in io_close_queue().
}
static inline u32 io_zcrx_rqring_entries(struct io_zcrx_ifq *ifq)
