LXR linux/drivers/net/ethernet/chelsio/cxgb4/srq.h

   1/*
   2 * This file is part of the Chelsio T6 Ethernet driver for Linux.
   3 *
   4 * Copyright (c) 2017-2018 Chelsio Communications, Inc. All rights reserved.
   5 *
   6 * This software is available to you under a choice of one of two
   7 * licenses.  You may choose to be licensed under the terms of the GNU
   8 * General Public License (GPL) Version 2, available from the file
   9 * COPYING in the main directory of this source tree, or the
  10 * OpenIB.org BSD license below:
  11 *
  12 *     Redistribution and use in source and binary forms, with or
  13 *     without modification, are permitted provided that the following
  14 *     conditions are met:
  15 *
  16 *      - Redistributions of source code must retain the above
  17 *        copyright notice, this list of conditions and the following
  18 *        disclaimer.
  19 *
  20 *      - Redistributions in binary form must reproduce the above
  21 *        copyright notice, this list of conditions and the following
  22 *        disclaimer in the documentation and/or other materials
  23 *        provided with the distribution.
  24 *
  25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32 * SOFTWARE.
  33 */
  34
  35#ifndef __CXGB4_SRQ_H
  36#define __CXGB4_SRQ_H
  37
  38struct adapter;
  39struct cpl_srq_table_rpl;
  40
  41#define SRQ_WAIT_TO     (HZ * 5)
  42
  43struct srq_entry {
  44        u8 valid;
  45        u8 idx;
  46        u8 qlen;
  47        u16 pdid;
  48        u16 cur_msn;
  49        u16 max_msn;
  50        u32 qbase;
  51};
  52
  53struct srq_data {
  54        unsigned int srq_size;
  55        struct srq_entry *entryp;
  56        struct completion comp;
  57        struct mutex lock; /* generic mutex for srq data */
  58};
  59
  60struct srq_data *t4_init_srq(int srq_size);
  61int cxgb4_get_srq_entry(struct net_device *dev,
  62                        int srq_idx, struct srq_entry *entryp);
  63void do_srq_table_rpl(struct adapter *adap,
  64                      const struct cpl_srq_table_rpl *rpl);
  65#endif  /* __CXGB4_SRQ_H */
  66