Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

v6.10-rc1 is released, forward from v6.9

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/include/linux/net/intel/libie/rx.h b/include/linux/net/intel/libie/rx.h
new file mode 100644
index 000000000000..8e97775f1d66
--- /dev/null
+++ b/include/linux/net/intel/libie/rx.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2024 Intel Corporation */
+
+#ifndef __LIBIE_RX_H
+#define __LIBIE_RX_H
+
+#include <net/libeth/rx.h>
+
+/* Rx buffer management */
+
+/* The largest size for a single descriptor as per HW */
+#define LIBIE_MAX_RX_BUF_LEN	9728U
+/* "True" HW-writeable space: minimum from SW and HW values */
+#define LIBIE_RX_BUF_LEN(hr)	min_t(u32, LIBETH_RX_PAGE_LEN(hr),	\
+				      LIBIE_MAX_RX_BUF_LEN)
+
+/* The maximum frame size as per HW (S/G) */
+#define __LIBIE_MAX_RX_FRM_LEN	16382U
+/* ATST, HW can chain up to 5 Rx descriptors */
+#define LIBIE_MAX_RX_FRM_LEN(hr)					\
+	min_t(u32, __LIBIE_MAX_RX_FRM_LEN, LIBIE_RX_BUF_LEN(hr) * 5)
+/* Maximum frame size minus LL overhead */
+#define LIBIE_MAX_MTU							\
+	(LIBIE_MAX_RX_FRM_LEN(LIBETH_MAX_HEADROOM) - LIBETH_RX_LL_LEN)
+
+/* O(1) converting i40e/ice/iavf's 8/10-bit hardware packet type to a parsed
+ * bitfield struct.
+ */
+
+#define LIBIE_RX_PT_NUM		154
+
+extern const struct libeth_rx_pt libie_rx_pt_lut[LIBIE_RX_PT_NUM];
+
+/**
+ * libie_rx_pt_parse - convert HW packet type to software bitfield structure
+ * @pt: 10-bit hardware packet type value from the descriptor
+ *
+ * ```libie_rx_pt_lut``` must be accessed only using this wrapper.
+ *
+ * Return: parsed bitfield struct corresponding to the provided ptype.
+ */
+static inline struct libeth_rx_pt libie_rx_pt_parse(u32 pt)
+{
+	if (unlikely(pt >= LIBIE_RX_PT_NUM))
+		pt = 0;
+
+	return libie_rx_pt_lut[pt];
+}
+
+#endif /* __LIBIE_RX_H */