270 lines
8.2 KiB
C
270 lines
8.2 KiB
C
|
|
/**************************************************************************
|
|
|
|
Copyright (c) 2007, Chelsio Inc.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
3. Neither the name of the Chelsio Corporation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
$FreeBSD: src/sys/dev/cxgb/cxgb_offload.h,v 1.1 2007/05/25 09:48:19 kmacy Exp $
|
|
|
|
***************************************************************************/
|
|
|
|
#ifndef _CXGB_OFFLOAD_H
|
|
#define _CXGB_OFFLOAD_H
|
|
|
|
|
|
#ifdef __FreeBSD__
|
|
#include <dev/cxgb/common/cxgb_tcb.h>
|
|
#include <dev/cxgb/cxgb_l2t.h>
|
|
|
|
#include <dev/cxgb/ulp/toecore/toedev.h>
|
|
#include <dev/cxgb/common/cxgb_t3_cpl.h>
|
|
#endif
|
|
#ifdef __NetBSD__
|
|
#include "cxgb_tcb.h"
|
|
#include "cxgb_l2t.h"
|
|
|
|
#include "cxgb_toedev.h"
|
|
#include "cxgb_t3_cpl.h"
|
|
#endif
|
|
|
|
struct adapter;
|
|
struct cxgb_client;
|
|
|
|
void cxgb_offload_init(void);
|
|
void cxgb_offload_exit(void);
|
|
|
|
void cxgb_adapter_ofld(struct adapter *adapter);
|
|
void cxgb_adapter_unofld(struct adapter *adapter);
|
|
int cxgb_offload_activate(struct adapter *adapter);
|
|
void cxgb_offload_deactivate(struct adapter *adapter);
|
|
int cxgb_ofld_recv(struct toedev *dev, struct mbuf **m, int n);
|
|
|
|
void cxgb_set_dummy_ops(struct toedev *dev);
|
|
|
|
|
|
/*
|
|
* Client registration. Users of T3 driver must register themselves.
|
|
* The T3 driver will call the add function of every client for each T3
|
|
* adapter activated, passing up the toedev ptr. Each client fills out an
|
|
* array of callback functions to process CPL messages.
|
|
*/
|
|
|
|
void cxgb_register_client(struct cxgb_client *client);
|
|
void cxgb_unregister_client(struct cxgb_client *client);
|
|
void cxgb_add_clients(struct toedev *tdev);
|
|
void cxgb_remove_clients(struct toedev *tdev);
|
|
|
|
typedef int (*cxgb_cpl_handler_func)(struct toedev *dev,
|
|
struct mbuf *m, void *ctx);
|
|
|
|
struct cxgb_client {
|
|
char *name;
|
|
void (*add) (struct toedev *);
|
|
void (*remove) (struct toedev *);
|
|
cxgb_cpl_handler_func *handlers;
|
|
int (*redirect)(void *ctx, struct rtentry *old,
|
|
struct rtentry *new,
|
|
struct l2t_entry *l2t);
|
|
TAILQ_ENTRY(cxgb_client) client_entry;
|
|
};
|
|
|
|
/*
|
|
* TID allocation services.
|
|
*/
|
|
int cxgb_alloc_atid(struct toedev *dev, struct cxgb_client *client,
|
|
void *ctx);
|
|
int cxgb_alloc_stid(struct toedev *dev, struct cxgb_client *client,
|
|
void *ctx);
|
|
void *cxgb_free_atid(struct toedev *dev, int atid);
|
|
void cxgb_free_stid(struct toedev *dev, int stid);
|
|
void cxgb_insert_tid(struct toedev *dev, struct cxgb_client *client,
|
|
void *ctx,
|
|
unsigned int tid);
|
|
void cxgb_queue_tid_release(struct toedev *dev, unsigned int tid);
|
|
void cxgb_remove_tid(struct toedev *dev, void *ctx, unsigned int tid);
|
|
|
|
struct toe_tid_entry {
|
|
struct cxgb_client *client;
|
|
void *ctx;
|
|
};
|
|
|
|
/* CPL message priority levels */
|
|
enum {
|
|
CPL_PRIORITY_DATA = 0, /* data messages */
|
|
CPL_PRIORITY_SETUP = 1, /* connection setup messages */
|
|
CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */
|
|
CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */
|
|
CPL_PRIORITY_ACK = 1, /* RX ACK messages */
|
|
CPL_PRIORITY_CONTROL = 1 /* offload control messages */
|
|
};
|
|
|
|
/* Flags for return value of CPL message handlers */
|
|
enum {
|
|
CPL_RET_BUF_DONE = 1, // buffer processing done, buffer may be freed
|
|
CPL_RET_BAD_MSG = 2, // bad CPL message (e.g., unknown opcode)
|
|
CPL_RET_UNKNOWN_TID = 4 // unexpected unknown TID
|
|
};
|
|
|
|
typedef int (*cpl_handler_func)(struct toedev *dev, struct mbuf *m);
|
|
|
|
/*
|
|
* Returns a pointer to the first byte of the CPL header in an sk_buff that
|
|
* contains a CPL message.
|
|
*/
|
|
static inline void *cplhdr(struct mbuf *m)
|
|
{
|
|
return m->m_data;
|
|
}
|
|
|
|
void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h);
|
|
|
|
union listen_entry {
|
|
struct toe_tid_entry toe_tid;
|
|
union listen_entry *next;
|
|
};
|
|
|
|
union active_open_entry {
|
|
struct toe_tid_entry toe_tid;
|
|
union active_open_entry *next;
|
|
};
|
|
|
|
/*
|
|
* Holds the size, base address, free list start, etc of the TID, server TID,
|
|
* and active-open TID tables for a offload device.
|
|
* The tables themselves are allocated dynamically.
|
|
*/
|
|
struct tid_info {
|
|
struct toe_tid_entry *tid_tab;
|
|
unsigned int ntids;
|
|
volatile int tids_in_use;
|
|
|
|
union listen_entry *stid_tab;
|
|
unsigned int nstids;
|
|
unsigned int stid_base;
|
|
|
|
union active_open_entry *atid_tab;
|
|
unsigned int natids;
|
|
unsigned int atid_base;
|
|
|
|
/*
|
|
* The following members are accessed R/W so we put them in their own
|
|
* cache lines.
|
|
*
|
|
* XXX We could combine the atid fields above with the lock here since
|
|
* atids are use once (unlike other tids). OTOH the above fields are
|
|
* usually in cache due to tid_tab.
|
|
*/
|
|
struct mtx atid_lock /* ____cacheline_aligned_in_smp */;
|
|
union active_open_entry *afree;
|
|
unsigned int atids_in_use;
|
|
|
|
struct mtx stid_lock /*____cacheline_aligned */;
|
|
union listen_entry *sfree;
|
|
unsigned int stids_in_use;
|
|
};
|
|
|
|
struct toe_data {
|
|
#ifdef notyet
|
|
struct list_head list_node;
|
|
#endif
|
|
struct toedev *dev;
|
|
unsigned int tx_max_chunk; /* max payload for TX_DATA */
|
|
unsigned int max_wrs; /* max in-flight WRs per connection */
|
|
unsigned int nmtus;
|
|
const unsigned short *mtus;
|
|
struct tid_info tid_maps;
|
|
|
|
struct toe_tid_entry *tid_release_list;
|
|
struct mtx tid_release_lock;
|
|
struct task tid_release_task;
|
|
};
|
|
|
|
/*
|
|
* toedev -> toe_data accessor
|
|
*/
|
|
#define TOE_DATA(dev) (*(struct toe_data **)&(dev)->l4opt)
|
|
|
|
/*
|
|
* Map an ATID or STID to their entries in the corresponding TID tables.
|
|
*/
|
|
static inline union active_open_entry *atid2entry(const struct tid_info *t,
|
|
unsigned int atid)
|
|
{
|
|
return &t->atid_tab[atid - t->atid_base];
|
|
}
|
|
|
|
|
|
static inline union listen_entry *stid2entry(const struct tid_info *t,
|
|
unsigned int stid)
|
|
{
|
|
return &t->stid_tab[stid - t->stid_base];
|
|
}
|
|
|
|
/*
|
|
* Find the connection corresponding to a TID.
|
|
*/
|
|
static inline struct toe_tid_entry *lookup_tid(const struct tid_info *t,
|
|
unsigned int tid)
|
|
{
|
|
return tid < t->ntids ? &(t->tid_tab[tid]) : NULL;
|
|
}
|
|
|
|
/*
|
|
* Find the connection corresponding to a server TID.
|
|
*/
|
|
static inline struct toe_tid_entry *lookup_stid(const struct tid_info *t,
|
|
unsigned int tid)
|
|
{
|
|
if (tid < t->stid_base || tid >= t->stid_base + t->nstids)
|
|
return NULL;
|
|
return &(stid2entry(t, tid)->toe_tid);
|
|
}
|
|
|
|
/*
|
|
* Find the connection corresponding to an active-open TID.
|
|
*/
|
|
static inline struct toe_tid_entry *lookup_atid(const struct tid_info *t,
|
|
unsigned int tid)
|
|
{
|
|
if (tid < t->atid_base || tid >= t->atid_base + t->natids)
|
|
return NULL;
|
|
return &(atid2entry(t, tid)->toe_tid);
|
|
}
|
|
|
|
void *cxgb_alloc_mem(unsigned long size);
|
|
void cxgb_free_mem(void *addr);
|
|
void cxgb_neigh_update(struct rtentry *rt);
|
|
void cxgb_redirect(struct rtentry *old, struct rtentry *new);
|
|
int process_rx(struct toedev *dev, struct mbuf **m, int n);
|
|
int attach_toedev(struct toedev *dev);
|
|
void detach_toedev(struct toedev *dev);
|
|
|
|
|
|
#endif
|