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39#ifndef __LINUX_USB_CDC_NCM_H
40#define __LINUX_USB_CDC_NCM_H
41
42#define CDC_NCM_COMM_ALTSETTING_NCM 0
43#define CDC_NCM_COMM_ALTSETTING_MBIM 1
44
45#define CDC_NCM_DATA_ALTSETTING_NCM 1
46#define CDC_NCM_DATA_ALTSETTING_MBIM 2
47
48
49#define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10
50
51
52#define CDC_NCM_NTB_MAX_SIZE_TX 32768
53#define CDC_NCM_NTB_MAX_SIZE_RX 32768
54
55
56#define CDC_NCM_NTB_DEF_SIZE_TX 16384
57#define CDC_NCM_NTB_DEF_SIZE_RX 16384
58
59
60#define CDC_NCM_MIN_DATAGRAM_SIZE 1514
61
62
63#define CDC_MBIM_MIN_DATAGRAM_SIZE 2048
64
65#define CDC_NCM_MIN_TX_PKT 512
66
67
68#define CDC_NCM_MAX_DATAGRAM_SIZE 8192
69
70
71
72
73
74#define CDC_NCM_DPT_DATAGRAMS_MAX 40
75
76
77#define CDC_NCM_RESTART_TIMER_DATAGRAM_CNT 3
78#define CDC_NCM_TIMER_PENDING_CNT 2
79#define CDC_NCM_TIMER_INTERVAL_USEC 400UL
80#define CDC_NCM_TIMER_INTERVAL_MIN 5UL
81#define CDC_NCM_TIMER_INTERVAL_MAX (U32_MAX / NSEC_PER_USEC)
82
83
84#define CDC_NCM_FLAG_NDP_TO_END 0x02
85
86#define cdc_ncm_comm_intf_is_mbim(x) ((x)->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_MBIM && \
87 (x)->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE)
88#define cdc_ncm_data_intf_is_mbim(x) ((x)->desc.bInterfaceProtocol == USB_CDC_MBIM_PROTO_NTB)
89
90struct cdc_ncm_ctx {
91 struct usb_cdc_ncm_ntb_parameters ncm_parm;
92 struct hrtimer tx_timer;
93 struct tasklet_struct bh;
94
95 const struct usb_cdc_ncm_desc *func_desc;
96 const struct usb_cdc_mbim_desc *mbim_desc;
97 const struct usb_cdc_mbim_extended_desc *mbim_extended_desc;
98 const struct usb_cdc_ether_desc *ether_desc;
99
100 struct usb_interface *control;
101 struct usb_interface *data;
102
103 struct sk_buff *tx_curr_skb;
104 struct sk_buff *tx_rem_skb;
105 __le32 tx_rem_sign;
106
107 spinlock_t mtx;
108 atomic_t stop;
109 int drvflags;
110
111 u32 timer_interval;
112 u32 max_ndp_size;
113 struct usb_cdc_ncm_ndp16 *delayed_ndp16;
114
115 u32 tx_timer_pending;
116 u32 tx_curr_frame_num;
117 u32 rx_max;
118 u32 tx_max;
119 u32 max_datagram_size;
120 u16 tx_max_datagrams;
121 u16 tx_remainder;
122 u16 tx_modulus;
123 u16 tx_ndp_modulus;
124 u16 tx_seq;
125 u16 rx_seq;
126 u16 min_tx_pkt;
127
128
129 u32 tx_curr_frame_payload;
130 u32 tx_reason_ntb_full;
131 u32 tx_reason_ndp_full;
132 u32 tx_reason_timeout;
133 u32 tx_reason_max_datagram;
134 u64 tx_overhead;
135 u64 tx_ntbs;
136 u64 rx_overhead;
137 u64 rx_ntbs;
138};
139
140u8 cdc_ncm_select_altsetting(struct usb_interface *intf);
141int cdc_ncm_change_mtu(struct net_device *net, int new_mtu);
142int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting, int drvflags);
143void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf);
144struct sk_buff *cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign);
145int cdc_ncm_rx_verify_nth16(struct cdc_ncm_ctx *ctx, struct sk_buff *skb_in);
146int cdc_ncm_rx_verify_ndp16(struct sk_buff *skb_in, int ndpoffset);
147struct sk_buff *
148cdc_ncm_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags);
149int cdc_ncm_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in);
150
151#endif
152
