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Diffstat (limited to 'include/linux/if_rmnet.h')
-rw-r--r--include/linux/if_rmnet.h32
1 files changed, 28 insertions, 4 deletions
diff --git a/include/linux/if_rmnet.h b/include/linux/if_rmnet.h
index 4efb537f57f3..10e7521ecb6c 100644
--- a/include/linux/if_rmnet.h
+++ b/include/linux/if_rmnet.h
@@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0-only
- * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2019, 2021 The Linux Foundation. All rights reserved.
*/
#ifndef _LINUX_IF_RMNET_H_
@@ -12,10 +12,12 @@ struct rmnet_map_header {
} __aligned(1);
/* rmnet_map_header flags field:
- * PAD_LEN: number of pad bytes following packet data
- * CMD: 1 = packet contains a MAP command; 0 = packet contains data
+ * PAD_LEN: number of pad bytes following packet data
+ * CMD: 1 = packet contains a MAP command; 0 = packet contains data
+ * NEXT_HEADER: 1 = packet contains V5 CSUM header 0 = no V5 CSUM header
*/
#define MAP_PAD_LEN_MASK GENMASK(5, 0)
+#define MAP_NEXT_HEADER_FLAG BIT(6)
#define MAP_CMD_FLAG BIT(7)
struct rmnet_map_dl_csum_trailer {
@@ -23,7 +25,7 @@ struct rmnet_map_dl_csum_trailer {
u8 flags; /* MAP_CSUM_DL_VALID_FLAG */
__be16 csum_start_offset;
__be16 csum_length;
- __be16 csum_value;
+ __sum16 csum_value;
} __aligned(1);
/* rmnet_map_dl_csum_trailer flags field:
@@ -45,4 +47,26 @@ struct rmnet_map_ul_csum_header {
#define MAP_CSUM_UL_UDP_FLAG BIT(14)
#define MAP_CSUM_UL_ENABLED_FLAG BIT(15)
+/* MAP CSUM headers */
+struct rmnet_map_v5_csum_header {
+ u8 header_info;
+ u8 csum_info;
+ __be16 reserved;
+} __aligned(1);
+
+/* v5 header_info field
+ * NEXT_HEADER: represents whether there is any next header
+ * HEADER_TYPE: represents the type of this header
+ *
+ * csum_info field
+ * CSUM_VALID_OR_REQ:
+ * 1 = for UL, checksum computation is requested.
+ * 1 = for DL, validated the checksum and has found it valid
+ */
+
+#define MAPV5_HDRINFO_NXT_HDR_FLAG BIT(0)
+#define MAPV5_HDRINFO_HDR_TYPE_FMASK GENMASK(7, 1)
+#define MAPV5_CSUMINFO_VALID_FLAG BIT(7)
+
+#define RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD 2
#endif /* !(_LINUX_IF_RMNET_H_) */