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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/drivers/net/wireless/ath/wil6210/txrx_edma.h
....@@ -1,17 +1,6 @@
1
+/* SPDX-License-Identifier: ISC */
12 /*
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- * Copyright (c) 2012-2016,2018, The Linux Foundation. All rights reserved.
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- *
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- * Permission to use, copy, modify, and/or distribute this software for any
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- * purpose with or without fee is hereby granted, provided that the above
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- * copyright notice and this permission notice appear in all copies.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+ * Copyright (c) 2012-2016,2018-2019, The Linux Foundation. All rights reserved.
154  */
165 
176 #ifndef WIL6210_TXRX_EDMA_H
....@@ -23,9 +12,9 @@
2312 #define WIL_SRING_SIZE_ORDER_MIN	(WIL_RING_SIZE_ORDER_MIN)
2413 #define WIL_SRING_SIZE_ORDER_MAX	(WIL_RING_SIZE_ORDER_MAX)
2514 /* RX sring order should be bigger than RX ring order */
26
-#define WIL_RX_SRING_SIZE_ORDER_DEFAULT	(11)
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-#define WIL_TX_SRING_SIZE_ORDER_DEFAULT	(12)
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-#define WIL_RX_BUFF_ARR_SIZE_DEFAULT (1536)
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+#define WIL_RX_SRING_SIZE_ORDER_DEFAULT	(12)
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+#define WIL_TX_SRING_SIZE_ORDER_DEFAULT	(14)
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+#define WIL_RX_BUFF_ARR_SIZE_DEFAULT (2600)
2918 
3019 #define WIL_DEFAULT_RX_STATUS_RING_ID 0
3120 #define WIL_RX_DESC_RING_ID 0
....@@ -57,7 +46,7 @@
5746 
5847 #define WIL_RX_EDMA_DLPF_LU_MISS_TID_POS	5
5948 
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-#define WIL_RX_EDMA_MID_VALID_BIT		BIT(22)
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+#define WIL_RX_EDMA_MID_VALID_BIT		BIT(20)
6150 
6251 #define WIL_EDMA_DESC_TX_MAC_CFG_0_QID_POS 16
6352 #define WIL_EDMA_DESC_TX_MAC_CFG_0_QID_LEN 6
....@@ -255,8 +244,8 @@
255244  *		     calculated, Bit1- L4Err - TCP/UDP Checksum Error
256245  *	bit      7 : Reserved:1
257246  *	bit  8..19 : Flow ID:12 - MSDU flow ID
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- *	bit 20..21 : MID:2 - The MAC ID
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- *	bit     22 : MID_V:1 - The MAC ID field is valid
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+ *	bit     20 : MID_V:1 - The MAC ID field is valid
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+ *	bit 21..22 : MID:2 - The MAC ID
260249  *	bit     23 : L3T:1 - IP types: 0-IPv6, 1-IPv4
261250  *	bit     24 : L4T:1 - Layer 4 Type: 0-UDP, 1-TCP
262251  *	bit     25 : BC:1 - The received MPDU is broadcast
....@@ -341,8 +330,10 @@
341330 	u32 d0;
342331 	u32 d1;
343332 	__le16 seq_num; /* only lower 12 bits */
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-	u16 pn_15_0;
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-	u32 pn_47_16;
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+	struct_group_attr(pn, __packed,
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+		u16 pn_15_0;
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+		u32 pn_47_16;
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+	);
346337 } __packed;
347338 
348339 struct wil_rx_status_extended {
....@@ -364,6 +355,12 @@
364355 {
365356 	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
366357 			    16, 21);
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+}
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+
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+static inline u8 wil_rx_status_get_cb_mode(void *msg)
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+{
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+	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
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+			    22, 23);
367364 }
368365 
369366 static inline u16 wil_rx_status_get_flow_id(void *msg)
....@@ -415,16 +412,16 @@
415412 		return val & WIL_RX_EDMA_DLPF_LU_MISS_CID_TID_MASK;
416413 }
417414 
418
-static inline int wil_rx_status_get_desc_rdy_bit(void *msg)
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-{
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-	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
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-			    31, 31);
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-}
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-
424415 static inline int wil_rx_status_get_eop(void *msg) /* EoP = End of Packet */
425416 {
426417 	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
427418 			    30, 30);
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+}
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+
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+static inline void wil_rx_status_reset_buff_id(struct wil_status_ring *s)
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+{
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+	((struct wil_rx_status_compressed *)
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+		(s->va + (s->elem_size * s->swhead)))->buff_id = 0;
428425 }
429426 
430427 static inline __le16 wil_rx_status_get_buff_id(void *msg)
....@@ -484,7 +481,7 @@
484481 		return 0; /* use the default MID */
485482 
486483 	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
487
-			    20, 21);
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+			    21, 22);
488485 }
489486 
490487 static inline int wil_rx_status_get_error(void *msg)
....@@ -511,6 +508,45 @@
511508 			    5, 6);
512509 }
513510 
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+/* L4	L3	Expected result
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+ * 0	0	Ok. No L3 and no L4 known protocols found.
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+ *		Treated as L2 packet. (no offloads on this packet)
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+ * 0	1	Ok. It means that L3 was found, and checksum check passed.
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+ *		No known L4 protocol was found.
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+ * 0	2	It means that L3 protocol was found, and checksum check failed.
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+ *		No L4 known protocol was found.
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+ * 1	any	Ok. It means that L4 was found, and checksum check passed.
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+ * 3	0	Not a possible scenario.
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+ * 3	1	Recalculate. It means that L3 protocol was found, and checksum
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+ *		passed. But L4 checksum failed. Need to see if really failed,
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+ *		or due to fragmentation.
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+ * 3	2	Both L3 and L4 checksum check failed.
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+ */
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+static inline int wil_rx_status_get_checksum(void *msg,
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+					     struct wil_net_stats *stats)
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+{
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+	int l3_rx_status = wil_rx_status_get_l3_rx_status(msg);
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+	int l4_rx_status = wil_rx_status_get_l4_rx_status(msg);
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+
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+	if (l4_rx_status == 1)
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+		return CHECKSUM_UNNECESSARY;
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+
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+	if (l4_rx_status == 0 && l3_rx_status == 1)
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+		return CHECKSUM_UNNECESSARY;
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+
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+	if (l3_rx_status == 0 && l4_rx_status == 0)
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+		/* L2 packet */
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+		return CHECKSUM_NONE;
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+
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+	/* If HW reports bad checksum, let IP stack re-check it
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+	 * For example, HW doesn't understand Microsoft IP stack that
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+	 * mis-calculates TCP checksum - if it should be 0x0,
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+	 * it writes 0xffff in violation of RFC 1624
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+	 */
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+	stats->rx_csum_err++;
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+	return CHECKSUM_NONE;
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+}
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+
514550 static inline int wil_rx_status_get_security(void *msg)
515551 {
516552 	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,