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/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
* Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __CXGB4_ULD_H
#define __CXGB4_ULD_H
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
#include <linux/inetdevice.h>
#include <linux/atomic.h>
#include "cxgb4.h"
#define MAX_ULD_QSETS 16
/* 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 /* control messages */
};
#define INIT_TP_WR(w, tid) do { \
(w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | \
FW_WR_IMMDLEN_V(sizeof(*w) - sizeof(w->wr))); \
(w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*w), 16)) | \
FW_WR_FLOWID_V(tid)); \
(w)->wr.wr_lo = cpu_to_be64(0); \
} while (0)
#define INIT_TP_WR_CPL(w, cpl, tid) do { \
INIT_TP_WR(w, tid); \
OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
} while (0)
#define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \
(w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | \
FW_WR_ATOMIC_V(atomic)); \
(w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(wrlen, 16)) | \
FW_WR_FLOWID_V(tid)); \
(w)->wr.wr_lo = cpu_to_be64(0); \
} while (0)
/* Special asynchronous notification message */
#define CXGB4_MSG_AN ((void *)1)
#define TX_ULD(uld)(((uld) != CXGB4_ULD_CRYPTO) ? CXGB4_TX_OFLD :\
CXGB4_TX_CRYPTO)
struct serv_entry {
void *data;
};
union aopen_entry {
void *data;
union aopen_entry *next;
};
/*
* Holds the size, base address, free list start, etc of the TID, server TID,
* and active-open TID tables. The tables themselves are allocated dynamically.
*/
struct tid_info {
void **tid_tab;
unsigned int ntids;
struct serv_entry *stid_tab;
unsigned long *stid_bmap;
unsigned int nstids;
unsigned int stid_base;
unsigned int hash_base;
union aopen_entry *atid_tab;
unsigned int natids;
unsigned int atid_base;
struct filter_entry *ftid_tab;
unsigned long *ftid_bmap;
unsigned int nftids;
unsigned int ftid_base;
unsigned int aftid_base;
unsigned int aftid_end;
/* Server filter region */
unsigned int sftid_base;
unsigned int nsftids;
spinlock_t atid_lock ____cacheline_aligned_in_smp;
union aopen_entry *afree;
unsigned int atids_in_use;
spinlock_t stid_lock;
unsigned int stids_in_use;
unsigned int v6_stids_in_use;
unsigned int sftids_in_use;
/* TIDs in the TCAM */
atomic_t tids_in_use;
/* TIDs in the HASH */
atomic_t hash_tids_in_use;
atomic_t conns_in_use;
/* lock for setting/clearing filter bitmap */
spinlock_t ftid_lock;
};
static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
{
return tid < t->ntids ? t->tid_tab[tid] : NULL;
}
static inline void *lookup_atid(const struct tid_info *t, unsigned int atid)
{
return atid < t->natids ? t->atid_tab[atid].data : NULL;
}
static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
{
/* Is it a server filter TID? */
if (t->nsftids && (stid >= t->sftid_base)) {
stid -= t->sftid_base;
stid += t->nstids;
} else {
stid -= t->stid_base;
}
return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
}
static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
unsigned int tid, unsigned short family)
{
t->tid_tab[tid] = data;
if (t->hash_base && (tid >= t->hash_base)) {
if (family == AF_INET6)
atomic_add(2, &t->hash_tids_in_use);
else
atomic_inc(&t->hash_tids_in_use);
} else {
if (family == AF_INET6)
atomic_add(2, &t->tids_in_use);
else
atomic_inc(&t->tids_in_use);
}
atomic_inc(&t->conns_in_use);
}
int cxgb4_alloc_atid(struct tid_info *t, void *data);
int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid,
unsigned short family);
struct in6_addr;
int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
__be32 sip, __be16 sport, __be16 vlan,
unsigned int queue);
int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
const struct in6_addr *sip, __be16 sport,
unsigned int queue);
int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
unsigned int queue, bool ipv6);
int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
__be32 sip, __be16 sport, __be16 vlan,
unsigned int queue,
unsigned char port, unsigned char mask);
int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
unsigned int queue, bool ipv6);
/* Filter operation context to allow callers of cxgb4_set_filter() and
* cxgb4_del_filter() to wait for an asynchronous completion.
*/
struct filter_ctx {
struct completion completion; /* completion rendezvous */
void *closure; /* caller's opaque information */
int result; /* result of operation */
u32 tid; /* to store tid */
};
struct ch_filter_specification;
int cxgb4_get_free_ftid(struct net_device *dev, int family);
int __cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs,
struct filter_ctx *ctx);
int __cxgb4_del_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs,
struct filter_ctx *ctx);
int cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs);
int cxgb4_del_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs);
int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx,
u64 *hitcnt, u64 *bytecnt, bool hash);
static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
{
skb_set_queue_mapping(skb, (queue << 1) | prio);
}
enum cxgb4_uld {
CXGB4_ULD_INIT,
CXGB4_ULD_RDMA,
CXGB4_ULD_ISCSI,
CXGB4_ULD_ISCSIT,
CXGB4_ULD_CRYPTO,
CXGB4_ULD_MAX
};
enum cxgb4_tx_uld {
CXGB4_TX_OFLD,
CXGB4_TX_CRYPTO,
CXGB4_TX_MAX
};
enum cxgb4_txq_type {
CXGB4_TXQ_ETH,
CXGB4_TXQ_ULD,
CXGB4_TXQ_CTRL,
CXGB4_TXQ_MAX
};
enum cxgb4_state {
CXGB4_STATE_UP,
CXGB4_STATE_START_RECOVERY,
CXGB4_STATE_DOWN,
CXGB4_STATE_DETACH
};
enum cxgb4_control {
CXGB4_CONTROL_DB_FULL,
CXGB4_CONTROL_DB_EMPTY,
CXGB4_CONTROL_DB_DROP,
};
struct pci_dev;
struct l2t_data;
struct net_device;
struct pkt_gl;
struct tp_tcp_stats;
struct
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