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 #include <linux/refcount.h>
  14
  15 struct clip_entry {
  16         spinlock_t lock;        /* Hold while modifying clip reference */
  17         refcount_t refcnt;
  18         struct list_head list;
  19         union {
  20                 struct sockaddr_in addr;
  21                 struct sockaddr_in6 addr6;
  22         };
  23 };
  24
  25 struct clip_tbl {
  26         unsigned int clipt_start;
  27         unsigned int clipt_size;
  28         rwlock_t lock;
  29         atomic_t nfree;
  30         struct list_head ce_free_head;
  31         void *cl_list;
  32         struct list_head hash_list[0];
  33 };
  34
  35 enum {
  36         CLIPT_MIN_HASH_BUCKETS = 2,
  37 };
  38
  39 struct clip_tbl *t4_init_clip_tbl(unsigned int clipt_start,
  40                                   unsigned int clipt_end);
  41 int cxgb4_clip_get(const struct net_device *dev, const u32 *lip, u8 v6);
  42 void cxgb4_clip_release(const struct net_device *dev, const u32 *lip, u8 v6);
  43 int clip_tbl_show(struct seq_file *seq, void *v);
  44 int cxgb4_update_root_dev_clip(struct net_device *dev);
  45 void t4_cleanup_clip_tbl(struct adapter *adap);