drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h

   1 /*
   2  *  This file is part of the Chelsio T4 Ethernet driver for Linux.
   3  *  Copyright (C) 2003-2014 Chelsio Communications.  All rights reserved.
   4  *
   5  *  Written by Deepak (deepak.s@chelsio.com)
   6  *
   7  *  This program is distributed in the hope that it will be useful, but WITHOUT
   8  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   9  *  FITNESS FOR A PARTICULAR PURPOSE.  See the LICENSE file included in this
  10  *  release for licensing terms and conditions.
  11  */
  12
  13 struct clip_entry {
  14         spinlock_t lock;        /* Hold while modifying clip reference */
  15         atomic_t refcnt;
  16         struct list_head list;
  17         union {
  18                 struct sockaddr_in addr;
  19                 struct sockaddr_in6 addr6;
  20         };
  21 };
  22
  23 struct clip_tbl {
  24         unsigned int clipt_start;
  25         unsigned int clipt_size;
  26         rwlock_t lock;
  27         atomic_t nfree;
  28         struct list_head ce_free_head;
  29         void *cl_list;
  30         struct list_head hash_list[0];
  31 };
  32
  33 enum {
  34         CLIPT_MIN_HASH_BUCKETS = 2,
  35 };
  36
  37 struct clip_tbl *t4_init_clip_tbl(unsigned int clipt_start,
  38                                   unsigned int clipt_end);
  39 int cxgb4_clip_get(const struct net_device *dev, const u32 *lip, u8 v6);
  40 void cxgb4_clip_release(const struct net_device *dev, const u32 *lip, u8 v6);
  41 int clip_tbl_show(struct seq_file *seq, void *v);
  42 int cxgb4_update_root_dev_clip(struct net_device *dev);
  43 void t4_cleanup_clip_tbl(struct adapter *adap);