LXR linux/drivers/net/cxgb3/cxgb3

   1/*
   2 * Copyright (c) 2006-2007 Chelsio, Inc. All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#ifndef _CHELSIO_DEFS_H
  33#define _CHELSIO_DEFS_H
  34
  35#include <linux/skbuff.h>
  36#include <net/tcp.h>
  37
  38#include "t3cdev.h"
  39
  40#include "cxgb3_offload.h"
  41
  42#define VALIDATE_TID 1
  43
  44void *cxgb_alloc_mem(unsigned long size);
  45void cxgb_free_mem(void *addr);
  46void cxgb_neigh_update(struct neighbour *neigh);
  47void cxgb_redirect(struct dst_entry *old, struct dst_entry *new);
  48
  49/*
  50 * Map an ATID or STID to their entries in the corresponding TID tables.
  51 */
  52static inline union active_open_entry *atid2entry(const struct tid_info *t,
  53                                                  unsigned int atid)
  54{
  55        return &t->atid_tab[atid - t->atid_base];
  56}
  57
  58static inline union listen_entry *stid2entry(const struct tid_info *t,
  59                                             unsigned int stid)
  60{
  61        return &t->stid_tab[stid - t->stid_base];
  62}
  63
  64/*
  65 * Find the connection corresponding to a TID.
  66 */
  67static inline struct t3c_tid_entry *lookup_tid(const struct tid_info *t,
  68                                               unsigned int tid)
  69{
  70        struct t3c_tid_entry *t3c_tid = tid < t->ntids ?
  71            &(t->tid_tab[tid]) : NULL;
  72
  73        return (t3c_tid && t3c_tid->client) ? t3c_tid : NULL;
  74}
  75
  76/*
  77 * Find the connection corresponding to a server TID.
  78 */
  79static inline struct t3c_tid_entry *lookup_stid(const struct tid_info *t,
  80                                                unsigned int tid)
  81{
  82        union listen_entry *e;
  83
  84        if (tid < t->stid_base || tid >= t->stid_base + t->nstids)
  85                return NULL;
  86
  87        e = stid2entry(t, tid);
  88        if ((void *)e->next >= (void *)t->tid_tab &&
  89            (void *)e->next < (void *)&t->atid_tab[t->natids])
  90                return NULL;
  91
  92        return &e->t3c_tid;
  93}
  94
  95/*
  96 * Find the connection corresponding to an active-open TID.
  97 */
  98static inline struct t3c_tid_entry *lookup_atid(const struct tid_info *t,
  99                                                unsigned int tid)
 100{
 101        union active_open_entry *e;
 102
 103        if (tid < t->atid_base || tid >= t->atid_base + t->natids)
 104                return NULL;
 105
 106        e = atid2entry(t, tid);
 107        if ((void *)e->next >= (void *)t->tid_tab &&
 108            (void *)e->next < (void *)&t->atid_tab[t->natids])
 109                return NULL;
 110
 111        return &e->t3c_tid;
 112}
 113
 114int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n);
 115int attach_t3cdev(struct t3cdev *dev);
 116void detach_t3cdev(struct t3cdev *dev);
 117#endif
 118