Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@xxxxxxxxx>
---
include/linux/usb/ncm.h | 112 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 112 insertions(+), 0 deletions(-)
create mode 100644 include/linux/usb/ncm.h
diff --git a/include/linux/usb/ncm.h b/include/linux/usb/ncm.h
new file mode 100644
index 0000000..0b752ef
--- /dev/null
+++ b/include/linux/usb/ncm.h
@@ -0,0 +1,112 @@
+/*
+ * USB CDC NCM auxiliary definitions
+ */
+
+#ifndef __LINUX_USB_NCM_H
+#define __LINUX_USB_NCM_H
+
+#include <linux/types.h>
+#include <linux/usb/cdc.h>
+#include <asm/unaligned.h>
+
+#define NCM_NTB_MIN_IN_SIZE 2048
+#define NCM_NTB_MIN_OUT_SIZE 2048
+
+/* bmNetworkCapabilities */
+
+#define NCM_NCAP_ETH_FILTER (1 << 0)
+#define NCM_NCAP_NET_ADDRESS (1 << 1)
+#define NCM_NCAP_ENCAP_COMM (1 << 2)
+#define NCM_NCAP_MAX_DGRAM (1 << 3)
+#define NCM_NCAP_CRC_MODE (1 << 4)
+
+/*
+ * Here are options for NCM Datagram Pointer table (NDP) parser.
+ * There are 2 different formats: NDP16 and NDP32 in the spec (ch. 3),
+ * in NDP16 offsets and sizes fields are 1 16bit word wide,
+ * in NDP32 -- 2 16bit words wide. Also signatures are different.
+ * To make the parser code the same, put the differences in the structure,
+ * and switch pointers to the structures when the format is changed.
+ */
+
+struct ndp_parser_opts {
+ u32 nth_sign;
+ u32 ndp_sign;
+ unsigned nth_size;
+ unsigned ndp_size;
+ unsigned ndplen_align;
+ /* sizes in u16 units */
+ unsigned dgram_item_len; /* index or length */
+ unsigned block_length;
+ unsigned fp_index;
+ unsigned reserved1;
+ unsigned reserved2;
+ unsigned next_fp_index;
+};
+
+#define INIT_NDP16_OPTS { \
+ .nth_sign = NCM_NTH16_SIGN, \
+ .ndp_sign = NCM_NDP16_NOCRC_SIGN, \
+ .nth_size = sizeof(struct usb_cdc_ncm_nth16), \
+ .ndp_size = sizeof(struct usb_cdc_ncm_ndp16), \
+ .ndplen_align = 4, \
+ .dgram_item_len = 1, \
+ .block_length = 1, \
+ .fp_index = 1, \
+ .reserved1 = 0, \
+ .reserved2 = 0, \
+ .next_fp_index = 1, \
+ }
+
+
+#define INIT_NDP32_OPTS { \
+ .nth_sign = NCM_NTH32_SIGN, \
+ .ndp_sign = NCM_NDP32_NOCRC_SIGN, \
+ .nth_size = sizeof(struct usb_cdc_ncm_nth32), \
+ .ndp_size = sizeof(struct usb_cdc_ncm_ndp32), \
+ .ndplen_align = 8, \
+ .dgram_item_len = 2, \
+ .block_length = 2, \
+ .fp_index = 2, \
+ .reserved1 = 1, \
+ .reserved2 = 2, \
+ .next_fp_index = 2, \
+ }
+
+static inline void put_ncm(__le16 **p, unsigned size, unsigned val)
+{
+ switch (size) {
+ case 1:
+ put_unaligned_le16((u16)val, *p);
+ break;
+ case 2:
+ put_unaligned_le32((u32)val, *p);
+
+ break;
+ default:
+ BUG();
+ }
+
+ *p += size;
+}
+
+static inline unsigned get_ncm(__le16 **p, unsigned size)
+{
+ unsigned tmp;
+
+ switch (size) {
+ case 1:
+ tmp = get_unaligned_le16(*p);
+ break;
+ case 2:
+ tmp = get_unaligned_le32(*p);
+ break;
+ default:
+ BUG();
+ }
+
+ *p += size;
+ return tmp;
+}
+
+#endif /* __LINUX_USB_NCM_H */
--
1.7.0.4
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