Define a new rmnet_map_v5_csum_header structure type. It will be
used for inline checksum offload, supported with version 5 of the
QMAP protocol.
Signed-off-by: Alex Elder <el...@linaro.org>
---
include/linux/if_rmnet.h | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/include/linux/if_rmnet.h b/include/linux/if_rmnet.h
index 9661416a9bb47..0fdda0e6e9963 100644
--- a/include/linux/if_rmnet.h
+++ b/include/linux/if_rmnet.h
@@ -52,4 +52,34 @@ struct rmnet_map_ul_csum_header {
#endif
} __aligned(1);
+
+/* Values for the header_type field of struct rmnet_map_v5_csum_header */
+enum rmnet_map_v5_header_type {
+ RMNET_MAP_HEADER_TYPE_UNKNOWN = 0x0,
+ RMNET_MAP_HEADER_TYPE_COALESCING = 0x1,
+ RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD = 0x2,
+};
+
+/* QMAP v5 checksum offload header */
+struct rmnet_map_v5_csum_header {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 next_hdr:1;
+ u8 header_type:7;
+
+ u8 hw_reserved:5;
+ u8 priority:1;
+ u8 hw_reserved_bit:1;
+ u8 csum_valid_required:1;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 header_type:7;
+ u8 next_hdr:1;
+
+ u8 csum_valid_required:1;
+ u8 hw_reserved_bit:1;
+ u8 priority:1;
+ u8 hw_reserved:5;
+#endif
+ __be16 reserved;
+};
+
#endif /* !(_LINUX_IF_RMNET_H_) */
--
2.20.1
