648 lines
18 KiB
C
648 lines
18 KiB
C
/*
|
|
* libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver.
|
|
*
|
|
* Copyright (c) 2010-2015 Chelsio Communications, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
* Written by: Karen Xie (kxie@chelsio.com)
|
|
* Written by: Rakesh Ranjan (rranjan@chelsio.com)
|
|
*/
|
|
|
|
#ifndef __LIBCXGBI_H__
|
|
#define __LIBCXGBI_H__
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/list.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/version.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/libiscsi_tcp.h>
|
|
|
|
#include <libcxgb_ppm.h>
|
|
|
|
enum cxgbi_dbg_flag {
|
|
CXGBI_DBG_ISCSI,
|
|
CXGBI_DBG_DDP,
|
|
CXGBI_DBG_TOE,
|
|
CXGBI_DBG_SOCK,
|
|
|
|
CXGBI_DBG_PDU_TX,
|
|
CXGBI_DBG_PDU_RX,
|
|
CXGBI_DBG_DEV,
|
|
};
|
|
|
|
#define log_debug(level, fmt, ...) \
|
|
do { \
|
|
if (dbg_level & (level)) \
|
|
pr_info(fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define pr_info_ipaddr(fmt_trail, \
|
|
addr1, addr2, args_trail...) \
|
|
do { \
|
|
if (!((1 << CXGBI_DBG_SOCK) & dbg_level)) \
|
|
break; \
|
|
pr_info("%pISpc - %pISpc, " fmt_trail, \
|
|
addr1, addr2, args_trail); \
|
|
} while (0)
|
|
|
|
/* max. connections per adapter */
|
|
#define CXGBI_MAX_CONN 16384
|
|
|
|
/* always allocate rooms for AHS */
|
|
#define SKB_TX_ISCSI_PDU_HEADER_MAX \
|
|
(sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE)
|
|
|
|
#define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/
|
|
|
|
/*
|
|
* align pdu size to multiple of 512 for better performance
|
|
*/
|
|
#define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0)
|
|
|
|
#define ULP2_MODE_ISCSI 2
|
|
|
|
#define ULP2_MAX_PKT_SIZE 16224
|
|
#define ULP2_MAX_PDU_PAYLOAD \
|
|
(ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN)
|
|
|
|
#define CXGBI_ULP2_MAX_ISO_PAYLOAD 65535
|
|
|
|
#define CXGBI_MAX_ISO_DATA_IN_SKB \
|
|
min_t(u32, MAX_SKB_FRAGS << PAGE_SHIFT, CXGBI_ULP2_MAX_ISO_PAYLOAD)
|
|
|
|
#define cxgbi_is_iso_config(csk) ((csk)->cdev->skb_iso_txhdr)
|
|
#define cxgbi_is_iso_disabled(csk) ((csk)->disable_iso)
|
|
|
|
/*
|
|
* For iscsi connections HW may inserts digest bytes into the pdu. Those digest
|
|
* bytes are not sent by the host but are part of the TCP payload and therefore
|
|
* consume TCP sequence space.
|
|
*/
|
|
static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 };
|
|
static inline unsigned int cxgbi_ulp_extra_len(int submode)
|
|
{
|
|
return ulp2_extra_len[submode & 3];
|
|
}
|
|
|
|
#define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */
|
|
#define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */
|
|
#define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */
|
|
#define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */
|
|
|
|
/*
|
|
* sge_opaque_hdr -
|
|
* Opaque version of structure the SGE stores at skb->head of TX_DATA packets
|
|
* and for which we must reserve space.
|
|
*/
|
|
struct sge_opaque_hdr {
|
|
void *dev;
|
|
dma_addr_t addr[MAX_SKB_FRAGS + 1];
|
|
};
|
|
|
|
struct cxgbi_sock {
|
|
struct cxgbi_device *cdev;
|
|
|
|
int tid;
|
|
int atid;
|
|
unsigned long flags;
|
|
unsigned int mtu;
|
|
unsigned short rss_qid;
|
|
unsigned short txq_idx;
|
|
unsigned short advmss;
|
|
unsigned int tx_chan;
|
|
unsigned int rx_chan;
|
|
unsigned int mss_idx;
|
|
unsigned int smac_idx;
|
|
unsigned char port_id;
|
|
int wr_max_cred;
|
|
int wr_cred;
|
|
int wr_una_cred;
|
|
#ifdef CONFIG_CHELSIO_T4_DCB
|
|
u8 dcb_priority;
|
|
#endif
|
|
unsigned char hcrc_len;
|
|
unsigned char dcrc_len;
|
|
|
|
void *l2t;
|
|
struct sk_buff *wr_pending_head;
|
|
struct sk_buff *wr_pending_tail;
|
|
struct sk_buff *cpl_close;
|
|
struct sk_buff *cpl_abort_req;
|
|
struct sk_buff *cpl_abort_rpl;
|
|
struct sk_buff *skb_ulp_lhdr;
|
|
spinlock_t lock;
|
|
struct kref refcnt;
|
|
unsigned int state;
|
|
unsigned int csk_family;
|
|
union {
|
|
struct sockaddr_in saddr;
|
|
struct sockaddr_in6 saddr6;
|
|
};
|
|
union {
|
|
struct sockaddr_in daddr;
|
|
struct sockaddr_in6 daddr6;
|
|
};
|
|
struct dst_entry *dst;
|
|
struct sk_buff_head receive_queue;
|
|
struct sk_buff_head write_queue;
|
|
struct timer_list retry_timer;
|
|
struct completion cmpl;
|
|
int err;
|
|
rwlock_t callback_lock;
|
|
void *user_data;
|
|
|
|
u32 rcv_nxt;
|
|
u32 copied_seq;
|
|
u32 rcv_wup;
|
|
u32 snd_nxt;
|
|
u32 snd_una;
|
|
u32 write_seq;
|
|
u32 snd_win;
|
|
u32 rcv_win;
|
|
|
|
bool disable_iso;
|
|
u32 no_tx_credits;
|
|
unsigned long prev_iso_ts;
|
|
};
|
|
|
|
/*
|
|
* connection states
|
|
*/
|
|
enum cxgbi_sock_states{
|
|
CTP_CLOSED,
|
|
CTP_CONNECTING,
|
|
CTP_ACTIVE_OPEN,
|
|
CTP_ESTABLISHED,
|
|
CTP_ACTIVE_CLOSE,
|
|
CTP_PASSIVE_CLOSE,
|
|
CTP_CLOSE_WAIT_1,
|
|
CTP_CLOSE_WAIT_2,
|
|
CTP_ABORTING,
|
|
};
|
|
|
|
/*
|
|
* Connection flags -- many to track some close related events.
|
|
*/
|
|
enum cxgbi_sock_flags {
|
|
CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */
|
|
CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */
|
|
CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */
|
|
CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */
|
|
CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */
|
|
CTPF_HAS_ATID, /* reserved atid */
|
|
CTPF_HAS_TID, /* reserved hw tid */
|
|
CTPF_OFFLOAD_DOWN, /* offload function off */
|
|
CTPF_LOGOUT_RSP_RCVD, /* received logout response */
|
|
};
|
|
|
|
struct cxgbi_skb_rx_cb {
|
|
__u32 ddigest;
|
|
__u32 pdulen;
|
|
};
|
|
|
|
struct cxgbi_skb_tx_cb {
|
|
void *handle;
|
|
void *arp_err_handler;
|
|
struct sk_buff *wr_next;
|
|
u16 iscsi_hdr_len;
|
|
u8 ulp_mode;
|
|
};
|
|
|
|
enum cxgbi_skcb_flags {
|
|
SKCBF_TX_NEED_HDR, /* packet needs a header */
|
|
SKCBF_TX_MEM_WRITE, /* memory write */
|
|
SKCBF_TX_FLAG_COMPL, /* wr completion flag */
|
|
SKCBF_RX_COALESCED, /* received whole pdu */
|
|
SKCBF_RX_HDR, /* received pdu header */
|
|
SKCBF_RX_DATA, /* received pdu payload */
|
|
SKCBF_RX_STATUS, /* received ddp status */
|
|
SKCBF_RX_ISCSI_COMPL, /* received iscsi completion */
|
|
SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */
|
|
SKCBF_RX_HCRC_ERR, /* header digest error */
|
|
SKCBF_RX_DCRC_ERR, /* data digest error */
|
|
SKCBF_RX_PAD_ERR, /* padding byte error */
|
|
SKCBF_TX_ISO, /* iso cpl in tx skb */
|
|
};
|
|
|
|
struct cxgbi_skb_cb {
|
|
union {
|
|
struct cxgbi_skb_rx_cb rx;
|
|
struct cxgbi_skb_tx_cb tx;
|
|
};
|
|
unsigned long flags;
|
|
unsigned int seq;
|
|
};
|
|
|
|
#define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0]))
|
|
#define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags)
|
|
#define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq)
|
|
#define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest)
|
|
#define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen)
|
|
#define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next)
|
|
#define cxgbi_skcb_tx_iscsi_hdrlen(skb) (CXGBI_SKB_CB(skb)->tx.iscsi_hdr_len)
|
|
#define cxgbi_skcb_tx_ulp_mode(skb) (CXGBI_SKB_CB(skb)->tx.ulp_mode)
|
|
|
|
static inline void cxgbi_skcb_set_flag(struct sk_buff *skb,
|
|
enum cxgbi_skcb_flags flag)
|
|
{
|
|
__set_bit(flag, &(cxgbi_skcb_flags(skb)));
|
|
}
|
|
|
|
static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb,
|
|
enum cxgbi_skcb_flags flag)
|
|
{
|
|
__clear_bit(flag, &(cxgbi_skcb_flags(skb)));
|
|
}
|
|
|
|
static inline int cxgbi_skcb_test_flag(const struct sk_buff *skb,
|
|
enum cxgbi_skcb_flags flag)
|
|
{
|
|
return test_bit(flag, &(cxgbi_skcb_flags(skb)));
|
|
}
|
|
|
|
static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk,
|
|
enum cxgbi_sock_flags flag)
|
|
{
|
|
__set_bit(flag, &csk->flags);
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"csk 0x%p,%u,0x%lx, bit %d.\n",
|
|
csk, csk->state, csk->flags, flag);
|
|
}
|
|
|
|
static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk,
|
|
enum cxgbi_sock_flags flag)
|
|
{
|
|
__clear_bit(flag, &csk->flags);
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"csk 0x%p,%u,0x%lx, bit %d.\n",
|
|
csk, csk->state, csk->flags, flag);
|
|
}
|
|
|
|
static inline int cxgbi_sock_flag(struct cxgbi_sock *csk,
|
|
enum cxgbi_sock_flags flag)
|
|
{
|
|
if (csk == NULL)
|
|
return 0;
|
|
return test_bit(flag, &csk->flags);
|
|
}
|
|
|
|
static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state)
|
|
{
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"csk 0x%p,%u,0x%lx, state -> %u.\n",
|
|
csk, csk->state, csk->flags, state);
|
|
csk->state = state;
|
|
}
|
|
|
|
static inline void cxgbi_sock_free(struct kref *kref)
|
|
{
|
|
struct cxgbi_sock *csk = container_of(kref,
|
|
struct cxgbi_sock,
|
|
refcnt);
|
|
if (csk) {
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"free csk 0x%p, state %u, flags 0x%lx\n",
|
|
csk, csk->state, csk->flags);
|
|
kfree(csk);
|
|
}
|
|
}
|
|
|
|
static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk)
|
|
{
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"%s, put csk 0x%p, ref %u-1.\n",
|
|
fn, csk, kref_read(&csk->refcnt));
|
|
kref_put(&csk->refcnt, cxgbi_sock_free);
|
|
}
|
|
#define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk)
|
|
|
|
static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk)
|
|
{
|
|
log_debug(1 << CXGBI_DBG_SOCK,
|
|
"%s, get csk 0x%p, ref %u+1.\n",
|
|
fn, csk, kref_read(&csk->refcnt));
|
|
kref_get(&csk->refcnt);
|
|
}
|
|
#define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk)
|
|
|
|
static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk)
|
|
{
|
|
return csk->state >= CTP_ACTIVE_CLOSE;
|
|
}
|
|
|
|
static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk)
|
|
{
|
|
return csk->state == CTP_ESTABLISHED;
|
|
}
|
|
|
|
static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
while ((skb = __skb_dequeue(&csk->write_queue)))
|
|
__kfree_skb(skb);
|
|
}
|
|
|
|
static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win)
|
|
{
|
|
unsigned int wscale = 0;
|
|
|
|
while (wscale < 14 && (65535 << wscale) < win)
|
|
wscale++;
|
|
return wscale;
|
|
}
|
|
|
|
static inline struct sk_buff *alloc_wr(int wrlen, int dlen, gfp_t gfp)
|
|
{
|
|
struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp);
|
|
|
|
if (skb) {
|
|
__skb_put(skb, wrlen);
|
|
memset(skb->head, 0, wrlen + dlen);
|
|
} else
|
|
pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen, dlen);
|
|
return skb;
|
|
}
|
|
|
|
|
|
/*
|
|
* The number of WRs needed for an skb depends on the number of fragments
|
|
* in the skb and whether it has any payload in its main body. This maps the
|
|
* length of the gather list represented by an skb into the # of necessary WRs.
|
|
* The extra two fragments are for iscsi bhs and payload padding.
|
|
*/
|
|
#define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2)
|
|
|
|
static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk)
|
|
{
|
|
csk->wr_pending_head = csk->wr_pending_tail = NULL;
|
|
}
|
|
|
|
static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk,
|
|
struct sk_buff *skb)
|
|
{
|
|
cxgbi_skcb_tx_wr_next(skb) = NULL;
|
|
/*
|
|
* We want to take an extra reference since both us and the driver
|
|
* need to free the packet before it's really freed.
|
|
*/
|
|
skb_get(skb);
|
|
|
|
if (!csk->wr_pending_head)
|
|
csk->wr_pending_head = skb;
|
|
else
|
|
cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb;
|
|
csk->wr_pending_tail = skb;
|
|
}
|
|
|
|
static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk)
|
|
{
|
|
int n = 0;
|
|
const struct sk_buff *skb = csk->wr_pending_head;
|
|
|
|
while (skb) {
|
|
n += skb->csum;
|
|
skb = cxgbi_skcb_tx_wr_next(skb);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk)
|
|
{
|
|
return csk->wr_pending_head;
|
|
}
|
|
|
|
static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk)
|
|
{
|
|
struct sk_buff *skb = csk->wr_pending_head;
|
|
|
|
if (likely(skb)) {
|
|
csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb);
|
|
cxgbi_skcb_tx_wr_next(skb) = NULL;
|
|
}
|
|
return skb;
|
|
}
|
|
|
|
void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *);
|
|
void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *);
|
|
void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *);
|
|
void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int);
|
|
void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *);
|
|
void cxgbi_sock_closed(struct cxgbi_sock *);
|
|
void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int);
|
|
void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *);
|
|
void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *);
|
|
void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32);
|
|
void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int,
|
|
int);
|
|
unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int);
|
|
void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *);
|
|
|
|
struct cxgbi_hba {
|
|
struct net_device *ndev;
|
|
struct net_device *vdev; /* vlan dev */
|
|
struct Scsi_Host *shost;
|
|
struct cxgbi_device *cdev;
|
|
__be32 ipv4addr;
|
|
unsigned char port_id;
|
|
};
|
|
|
|
struct cxgbi_ports_map {
|
|
unsigned int max_connect;
|
|
unsigned int used;
|
|
unsigned short sport_base;
|
|
spinlock_t lock;
|
|
unsigned int next;
|
|
struct cxgbi_sock **port_csk;
|
|
};
|
|
|
|
#define CXGBI_FLAG_DEV_T3 0x1
|
|
#define CXGBI_FLAG_DEV_T4 0x2
|
|
#define CXGBI_FLAG_ADAPTER_RESET 0x4
|
|
#define CXGBI_FLAG_IPV4_SET 0x10
|
|
#define CXGBI_FLAG_USE_PPOD_OFLDQ 0x40
|
|
#define CXGBI_FLAG_DDP_OFF 0x100
|
|
#define CXGBI_FLAG_DEV_ISO_OFF 0x400
|
|
|
|
struct cxgbi_device {
|
|
struct list_head list_head;
|
|
struct list_head rcu_node;
|
|
unsigned int flags;
|
|
struct net_device **ports;
|
|
void *lldev;
|
|
struct cxgbi_hba **hbas;
|
|
const unsigned short *mtus;
|
|
unsigned char nmtus;
|
|
unsigned char nports;
|
|
struct pci_dev *pdev;
|
|
struct dentry *debugfs_root;
|
|
struct iscsi_transport *itp;
|
|
struct module *owner;
|
|
|
|
unsigned int pfvf;
|
|
unsigned int rx_credit_thres;
|
|
unsigned int skb_tx_rsvd;
|
|
u32 skb_iso_txhdr;
|
|
unsigned int skb_rx_extra; /* for msg coalesced mode */
|
|
unsigned int tx_max_size;
|
|
unsigned int rx_max_size;
|
|
unsigned int rxq_idx_cntr;
|
|
struct cxgbi_ports_map pmap;
|
|
|
|
void (*dev_ddp_cleanup)(struct cxgbi_device *);
|
|
struct cxgbi_ppm* (*cdev2ppm)(struct cxgbi_device *);
|
|
int (*csk_ddp_set_map)(struct cxgbi_ppm *, struct cxgbi_sock *,
|
|
struct cxgbi_task_tag_info *);
|
|
void (*csk_ddp_clear_map)(struct cxgbi_device *cdev,
|
|
struct cxgbi_ppm *,
|
|
struct cxgbi_task_tag_info *);
|
|
int (*csk_ddp_setup_digest)(struct cxgbi_sock *,
|
|
unsigned int, int, int);
|
|
int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *,
|
|
unsigned int, int);
|
|
|
|
void (*csk_release_offload_resources)(struct cxgbi_sock *);
|
|
int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *);
|
|
u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32);
|
|
int (*csk_push_tx_frames)(struct cxgbi_sock *, int);
|
|
void (*csk_send_abort_req)(struct cxgbi_sock *);
|
|
void (*csk_send_close_req)(struct cxgbi_sock *);
|
|
int (*csk_alloc_cpls)(struct cxgbi_sock *);
|
|
int (*csk_init_act_open)(struct cxgbi_sock *);
|
|
|
|
void *dd_data;
|
|
};
|
|
#define cxgbi_cdev_priv(cdev) ((cdev)->dd_data)
|
|
|
|
struct cxgbi_conn {
|
|
struct cxgbi_endpoint *cep;
|
|
struct iscsi_conn *iconn;
|
|
struct cxgbi_hba *chba;
|
|
u32 task_idx_bits;
|
|
unsigned int ddp_full;
|
|
unsigned int ddp_tag_full;
|
|
};
|
|
|
|
struct cxgbi_endpoint {
|
|
struct cxgbi_conn *cconn;
|
|
struct cxgbi_hba *chba;
|
|
struct cxgbi_sock *csk;
|
|
};
|
|
|
|
struct cxgbi_task_data {
|
|
#define CXGBI_TASK_SGL_CHECKED 0x1
|
|
#define CXGBI_TASK_SGL_COPY 0x2
|
|
u8 flags;
|
|
unsigned short nr_frags;
|
|
struct page_frag frags[MAX_SKB_FRAGS];
|
|
struct sk_buff *skb;
|
|
unsigned int dlen;
|
|
unsigned int offset;
|
|
unsigned int count;
|
|
unsigned int sgoffset;
|
|
u32 total_count;
|
|
u32 total_offset;
|
|
u32 max_xmit_dlength;
|
|
struct cxgbi_task_tag_info ttinfo;
|
|
};
|
|
#define iscsi_task_cxgbi_data(task) \
|
|
((task)->dd_data + sizeof(struct iscsi_tcp_task))
|
|
|
|
struct cxgbi_iso_info {
|
|
#define CXGBI_ISO_INFO_FSLICE 0x1
|
|
#define CXGBI_ISO_INFO_LSLICE 0x2
|
|
#define CXGBI_ISO_INFO_IMM_ENABLE 0x4
|
|
u8 flags;
|
|
u8 op;
|
|
u8 ahs;
|
|
u8 num_pdu;
|
|
u32 mpdu;
|
|
u32 burst_size;
|
|
u32 len;
|
|
u32 segment_offset;
|
|
u32 datasn_offset;
|
|
u32 buffer_offset;
|
|
};
|
|
|
|
static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr)
|
|
{
|
|
if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET)
|
|
chba->ipv4addr = ipaddr;
|
|
else
|
|
pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n",
|
|
chba->ndev->name);
|
|
}
|
|
|
|
struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int);
|
|
void cxgbi_device_unregister(struct cxgbi_device *);
|
|
void cxgbi_device_unregister_all(unsigned int flag);
|
|
struct cxgbi_device *cxgbi_device_find_by_lldev(void *);
|
|
struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *);
|
|
struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *,
|
|
int *);
|
|
int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int,
|
|
struct scsi_host_template *,
|
|
struct scsi_transport_template *);
|
|
void cxgbi_hbas_remove(struct cxgbi_device *);
|
|
|
|
int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,
|
|
unsigned int max_conn);
|
|
void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev);
|
|
|
|
void cxgbi_conn_tx_open(struct cxgbi_sock *);
|
|
void cxgbi_conn_pdu_ready(struct cxgbi_sock *);
|
|
int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8);
|
|
int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int);
|
|
int cxgbi_conn_xmit_pdu(struct iscsi_task *);
|
|
|
|
void cxgbi_cleanup_task(struct iscsi_task *task);
|
|
|
|
umode_t cxgbi_attr_is_visible(int param_type, int param);
|
|
void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *);
|
|
int cxgbi_set_conn_param(struct iscsi_cls_conn *,
|
|
enum iscsi_param, char *, int);
|
|
int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param, char *);
|
|
struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32);
|
|
int cxgbi_bind_conn(struct iscsi_cls_session *,
|
|
struct iscsi_cls_conn *, u64, int);
|
|
void cxgbi_destroy_session(struct iscsi_cls_session *);
|
|
struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *,
|
|
u16, u16, u32);
|
|
int cxgbi_set_host_param(struct Scsi_Host *,
|
|
enum iscsi_host_param, char *, int);
|
|
int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *);
|
|
struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *,
|
|
struct sockaddr *, int);
|
|
int cxgbi_ep_poll(struct iscsi_endpoint *, int);
|
|
void cxgbi_ep_disconnect(struct iscsi_endpoint *);
|
|
|
|
int cxgbi_iscsi_init(struct iscsi_transport *,
|
|
struct scsi_transport_template **);
|
|
void cxgbi_iscsi_cleanup(struct iscsi_transport *,
|
|
struct scsi_transport_template **);
|
|
void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *);
|
|
int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int,
|
|
unsigned int, unsigned int);
|
|
int cxgbi_ddp_cleanup(struct cxgbi_device *);
|
|
void cxgbi_ddp_page_size_factor(int *);
|
|
void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *,
|
|
struct cxgbi_task_tag_info *,
|
|
struct scatterlist **sg_pp, unsigned int *sg_off);
|
|
int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev,
|
|
struct cxgbi_tag_format *tformat,
|
|
unsigned int iscsi_size, unsigned int llimit,
|
|
unsigned int start, unsigned int rsvd_factor,
|
|
unsigned int edram_start, unsigned int edram_size);
|
|
#endif /*__LIBCXGBI_H__*/
|