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2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/net/xdp/xsk_queue.c
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@@ -3,26 +3,21 @@
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  * Copyright(c) 2018 Intel Corporation.
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  */
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+#include <linux/log2.h>
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 #include <linux/slab.h>
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+#include <linux/overflow.h>
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+#include <net/xdp_sock_drv.h>
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 #include "xsk_queue.h"
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-void xskq_set_umem(struct xsk_queue *q, struct xdp_umem_props *umem_props)
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+static size_t xskq_get_ring_size(struct xsk_queue *q, bool umem_queue)
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 {
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-	if (!q)
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-		return;
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+	struct xdp_umem_ring *umem_ring;
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+	struct xdp_rxtx_ring *rxtx_ring;
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-	q->umem_props = *umem_props;
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-}
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-
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-static u32 xskq_umem_get_ring_size(struct xsk_queue *q)
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-{
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-	return sizeof(struct xdp_umem_ring) + q->nentries * sizeof(u64);
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-}
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-
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-static u32 xskq_rxtx_get_ring_size(struct xsk_queue *q)
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-{
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-	return sizeof(struct xdp_ring) + q->nentries * sizeof(struct xdp_desc);
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+	if (umem_queue)
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+		return struct_size(umem_ring, desc, q->nentries);
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+	return struct_size(rxtx_ring, desc, q->nentries);
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 }
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 struct xsk_queue *xskq_create(u32 nentries, bool umem_queue)
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@@ -40,8 +35,7 @@
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 	gfp_flags = GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN |
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 		    __GFP_COMP  | __GFP_NORETRY;
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-	size = umem_queue ? xskq_umem_get_ring_size(q) :
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-	       xskq_rxtx_get_ring_size(q);
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+	size = xskq_get_ring_size(q, umem_queue);
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 	q->ring = (struct xdp_ring *)__get_free_pages(gfp_flags,
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 						      get_order(size));