drivers/net/wireless/quantenna/qtnfmac/trans.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
   3
   4 #ifndef _QTN_FMAC_TRANS_H_
   5 #define _QTN_FMAC_TRANS_H_
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/skbuff.h>
  10 #include <linux/mutex.h>
  11
  12 #include "qlink.h"
  13
  14 #define QTNF_CMD_FLAG_RESP_REQ          BIT(0)
  15
  16 #define QTNF_MAX_CMD_BUF_SIZE   2048
  17 #define QTNF_DEF_CMD_HROOM      4
  18
  19 struct qtnf_bus;
  20
  21 struct qtnf_cmd_ctl_node {
  22         struct completion cmd_resp_completion;
  23         struct sk_buff *resp_skb;
  24         u16 seq_num;
  25         bool waiting_for_resp;
  26         spinlock_t resp_lock; /* lock for resp_skb & waiting_for_resp changes */
  27 };
  28
  29 struct qtnf_qlink_transport {
  30         struct qtnf_cmd_ctl_node curr_cmd;
  31         struct sk_buff_head event_queue;
  32         size_t event_queue_max_len;
  33 };
  34
  35 void qtnf_trans_init(struct qtnf_bus *bus);
  36 void qtnf_trans_free(struct qtnf_bus *bus);
  37
  38 int qtnf_trans_send_next_cmd(struct qtnf_bus *bus);
  39 int qtnf_trans_handle_rx_ctl_packet(struct qtnf_bus *bus, struct sk_buff *skb);
  40 int qtnf_trans_send_cmd_with_resp(struct qtnf_bus *bus,
  41                                   struct sk_buff *cmd_skb,
  42                                   struct sk_buff **response_skb);
  43
  44 #endif /* _QTN_FMAC_TRANS_H_ */