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Index: src/drivers/net/ethernet/mellanox/mlx5/core/backport_compat.h
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===================================================================
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--- src.orig/drivers/net/ethernet/mellanox/mlx5/core/backport_compat.h 2020-07-14 20:07:10.942801484 +0200
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+++ src/drivers/net/ethernet/mellanox/mlx5/core/backport_compat.h 2020-07-14 20:07:49.481861209 +0200
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@@ -1,4 +1,17 @@
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#ifndef MLX5_BACKPORT_COMPAT_H
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#define MLX5_BACKPORT_COMPAT_H
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+#include <net/xdp_sock.h>
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+
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+
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+/*
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+ * A stub for xsk_umem_adjust_offset; since only unaligned mode is supported
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+ * in RHEL 8.2; the code is somewhat simplified.
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+ */
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+static inline u64 xsk_umem_adjust_offset(struct xdp_umem *umem, u64 address,
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+ u64 offset)
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+{
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+ return address + offset;
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+}
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+
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#endif
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Index: src/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
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===================================================================
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--- src.orig/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c 2020-07-14 20:07:07.866796717 +0200
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+++ src/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c 2020-07-14 20:07:10.954801503 +0200
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@@ -34,6 +34,7 @@
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#include <net/xdp_sock.h>
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#include "en/xdp.h"
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#include "en/params.h"
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+#include "backport_compat.h"
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int mlx5e_xdp_max_mtu(struct mlx5e_params *params, struct mlx5e_xsk_param *xsk)
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{
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Index: src/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c
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===================================================================
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--- src.orig/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c 2020-07-14 20:07:07.809796629 +0200
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+++ src/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c 2020-07-14 20:07:55.423870417 +0200
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@@ -4,6 +4,7 @@
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#include "rx.h"
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#include "en/xdp.h"
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#include <net/xdp_sock.h>
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+#include "../../backport_compat.h"
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/* RX data path */
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