644 lines · c
1/*2 * libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver.3 *4 * Copyright (c) 2010-2015 Chelsio Communications, Inc.5 *6 * This program is free software; you can redistribute it and/or modify7 * it under the terms of the GNU General Public License as published by8 * the Free Software Foundation.9 *10 * Written by: Karen Xie (kxie@chelsio.com)11 * Written by: Rakesh Ranjan (rranjan@chelsio.com)12 */13 14#ifndef __LIBCXGBI_H__15#define __LIBCXGBI_H__16 17#include <linux/kernel.h>18#include <linux/errno.h>19#include <linux/types.h>20#include <linux/debugfs.h>21#include <linux/list.h>22#include <linux/netdevice.h>23#include <linux/if_vlan.h>24#include <linux/scatterlist.h>25#include <linux/skbuff.h>26#include <linux/vmalloc.h>27#include <scsi/scsi_device.h>28#include <scsi/libiscsi_tcp.h>29 30#include <libcxgb_ppm.h>31 32enum cxgbi_dbg_flag {33 CXGBI_DBG_ISCSI,34 CXGBI_DBG_DDP,35 CXGBI_DBG_TOE,36 CXGBI_DBG_SOCK,37 38 CXGBI_DBG_PDU_TX,39 CXGBI_DBG_PDU_RX,40 CXGBI_DBG_DEV,41};42 43#define log_debug(level, fmt, ...) \44 do { \45 if (dbg_level & (level)) \46 pr_info(fmt, ##__VA_ARGS__); \47 } while (0)48 49#define pr_info_ipaddr(fmt_trail, \50 addr1, addr2, args_trail...) \51do { \52 if (!((1 << CXGBI_DBG_SOCK) & dbg_level)) \53 break; \54 pr_info("%pISpc - %pISpc, " fmt_trail, \55 addr1, addr2, args_trail); \56} while (0)57 58/* max. connections per adapter */59#define CXGBI_MAX_CONN 1638460 61/* always allocate rooms for AHS */62#define SKB_TX_ISCSI_PDU_HEADER_MAX \63 (sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE)64 65#define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/66 67/*68 * align pdu size to multiple of 512 for better performance69 */70#define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0)71 72#define ULP2_MODE_ISCSI 273 74#define ULP2_MAX_PKT_SIZE 1622475#define ULP2_MAX_PDU_PAYLOAD \76 (ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN)77 78#define CXGBI_ULP2_MAX_ISO_PAYLOAD 6553579 80#define CXGBI_MAX_ISO_DATA_IN_SKB \81 min_t(u32, MAX_SKB_FRAGS << PAGE_SHIFT, CXGBI_ULP2_MAX_ISO_PAYLOAD)82 83#define cxgbi_is_iso_config(csk) ((csk)->cdev->skb_iso_txhdr)84#define cxgbi_is_iso_disabled(csk) ((csk)->disable_iso)85 86/*87 * For iscsi connections HW may inserts digest bytes into the pdu. Those digest88 * bytes are not sent by the host but are part of the TCP payload and therefore89 * consume TCP sequence space.90 */91static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 };92static inline unsigned int cxgbi_ulp_extra_len(int submode)93{94 return ulp2_extra_len[submode & 3];95}96 97#define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */98#define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */99#define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */100#define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */101 102/*103 * sge_opaque_hdr -104 * Opaque version of structure the SGE stores at skb->head of TX_DATA packets105 * and for which we must reserve space.106 */107struct sge_opaque_hdr {108 void *dev;109 dma_addr_t addr[MAX_SKB_FRAGS + 1];110};111 112struct cxgbi_sock {113 struct cxgbi_device *cdev;114 115 int tid;116 int atid;117 unsigned long flags;118 unsigned int mtu;119 unsigned short rss_qid;120 unsigned short txq_idx;121 unsigned short advmss;122 unsigned int tx_chan;123 unsigned int rx_chan;124 unsigned int mss_idx;125 unsigned int smac_idx;126 unsigned char port_id;127 int wr_max_cred;128 int wr_cred;129 int wr_una_cred;130#ifdef CONFIG_CHELSIO_T4_DCB131 u8 dcb_priority;132#endif133 unsigned char hcrc_len;134 unsigned char dcrc_len;135 136 void *l2t;137 struct sk_buff *wr_pending_head;138 struct sk_buff *wr_pending_tail;139 struct sk_buff *cpl_close;140 struct sk_buff *cpl_abort_req;141 struct sk_buff *cpl_abort_rpl;142 struct sk_buff *skb_ulp_lhdr;143 spinlock_t lock;144 struct kref refcnt;145 unsigned int state;146 unsigned int csk_family;147 union {148 struct sockaddr_in saddr;149 struct sockaddr_in6 saddr6;150 };151 union {152 struct sockaddr_in daddr;153 struct sockaddr_in6 daddr6;154 };155 struct dst_entry *dst;156 struct sk_buff_head receive_queue;157 struct sk_buff_head write_queue;158 struct timer_list retry_timer;159 struct completion cmpl;160 int err;161 rwlock_t callback_lock;162 void *user_data;163 164 u32 rcv_nxt;165 u32 copied_seq;166 u32 rcv_wup;167 u32 snd_nxt;168 u32 snd_una;169 u32 write_seq;170 u32 snd_win;171 u32 rcv_win;172 173 bool disable_iso;174 u32 no_tx_credits;175 unsigned long prev_iso_ts;176};177 178/*179 * connection states180 */181enum cxgbi_sock_states{182 CTP_CLOSED,183 CTP_CONNECTING,184 CTP_ACTIVE_OPEN,185 CTP_ESTABLISHED,186 CTP_ACTIVE_CLOSE,187 CTP_PASSIVE_CLOSE,188 CTP_CLOSE_WAIT_1,189 CTP_CLOSE_WAIT_2,190 CTP_ABORTING,191};192 193/*194 * Connection flags -- many to track some close related events.195 */196enum cxgbi_sock_flags {197 CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */198 CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */199 CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */200 CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */201 CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */202 CTPF_HAS_ATID, /* reserved atid */203 CTPF_HAS_TID, /* reserved hw tid */204 CTPF_OFFLOAD_DOWN, /* offload function off */205 CTPF_LOGOUT_RSP_RCVD, /* received logout response */206};207 208struct cxgbi_skb_rx_cb {209 __u32 ddigest;210 __u32 pdulen;211};212 213struct cxgbi_skb_tx_cb {214 void *handle;215 void *arp_err_handler;216 struct sk_buff *wr_next;217 u16 iscsi_hdr_len;218 u8 ulp_mode;219};220 221enum cxgbi_skcb_flags {222 SKCBF_TX_NEED_HDR, /* packet needs a header */223 SKCBF_TX_MEM_WRITE, /* memory write */224 SKCBF_TX_FLAG_COMPL, /* wr completion flag */225 SKCBF_RX_COALESCED, /* received whole pdu */226 SKCBF_RX_HDR, /* received pdu header */227 SKCBF_RX_DATA, /* received pdu payload */228 SKCBF_RX_STATUS, /* received ddp status */229 SKCBF_RX_ISCSI_COMPL, /* received iscsi completion */230 SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */231 SKCBF_RX_HCRC_ERR, /* header digest error */232 SKCBF_RX_DCRC_ERR, /* data digest error */233 SKCBF_RX_PAD_ERR, /* padding byte error */234 SKCBF_TX_ISO, /* iso cpl in tx skb */235};236 237struct cxgbi_skb_cb {238 union {239 struct cxgbi_skb_rx_cb rx;240 struct cxgbi_skb_tx_cb tx;241 };242 unsigned long flags;243 unsigned int seq;244};245 246#define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0]))247#define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags)248#define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq)249#define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest)250#define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen)251#define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next)252#define cxgbi_skcb_tx_iscsi_hdrlen(skb) (CXGBI_SKB_CB(skb)->tx.iscsi_hdr_len)253#define cxgbi_skcb_tx_ulp_mode(skb) (CXGBI_SKB_CB(skb)->tx.ulp_mode)254 255static inline void cxgbi_skcb_set_flag(struct sk_buff *skb,256 enum cxgbi_skcb_flags flag)257{258 __set_bit(flag, &(cxgbi_skcb_flags(skb)));259}260 261static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb,262 enum cxgbi_skcb_flags flag)263{264 __clear_bit(flag, &(cxgbi_skcb_flags(skb)));265}266 267static inline int cxgbi_skcb_test_flag(const struct sk_buff *skb,268 enum cxgbi_skcb_flags flag)269{270 return test_bit(flag, &(cxgbi_skcb_flags(skb)));271}272 273static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk,274 enum cxgbi_sock_flags flag)275{276 __set_bit(flag, &csk->flags);277 log_debug(1 << CXGBI_DBG_SOCK,278 "csk 0x%p,%u,0x%lx, bit %d.\n",279 csk, csk->state, csk->flags, flag);280}281 282static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk,283 enum cxgbi_sock_flags flag)284{285 __clear_bit(flag, &csk->flags);286 log_debug(1 << CXGBI_DBG_SOCK,287 "csk 0x%p,%u,0x%lx, bit %d.\n",288 csk, csk->state, csk->flags, flag);289}290 291static inline int cxgbi_sock_flag(struct cxgbi_sock *csk,292 enum cxgbi_sock_flags flag)293{294 if (csk == NULL)295 return 0;296 return test_bit(flag, &csk->flags);297}298 299static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state)300{301 log_debug(1 << CXGBI_DBG_SOCK,302 "csk 0x%p,%u,0x%lx, state -> %u.\n",303 csk, csk->state, csk->flags, state);304 csk->state = state;305}306 307static inline void cxgbi_sock_free(struct kref *kref)308{309 struct cxgbi_sock *csk = container_of(kref,310 struct cxgbi_sock,311 refcnt);312 if (csk) {313 log_debug(1 << CXGBI_DBG_SOCK,314 "free csk 0x%p, state %u, flags 0x%lx\n",315 csk, csk->state, csk->flags);316 kfree(csk);317 }318}319 320static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk)321{322 log_debug(1 << CXGBI_DBG_SOCK,323 "%s, put csk 0x%p, ref %u-1.\n",324 fn, csk, kref_read(&csk->refcnt));325 kref_put(&csk->refcnt, cxgbi_sock_free);326}327#define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk)328 329static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk)330{331 log_debug(1 << CXGBI_DBG_SOCK,332 "%s, get csk 0x%p, ref %u+1.\n",333 fn, csk, kref_read(&csk->refcnt));334 kref_get(&csk->refcnt);335}336#define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk)337 338static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk)339{340 return csk->state >= CTP_ACTIVE_CLOSE;341}342 343static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk)344{345 return csk->state == CTP_ESTABLISHED;346}347 348static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk)349{350 struct sk_buff *skb;351 352 while ((skb = __skb_dequeue(&csk->write_queue)))353 __kfree_skb(skb);354}355 356static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win)357{358 unsigned int wscale = 0;359 360 while (wscale < 14 && (65535 << wscale) < win)361 wscale++;362 return wscale;363}364 365static inline struct sk_buff *alloc_wr(int wrlen, int dlen, gfp_t gfp)366{367 struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp);368 369 if (skb) {370 __skb_put(skb, wrlen);371 memset(skb->head, 0, wrlen + dlen);372 } else373 pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen, dlen);374 return skb;375}376 377 378/*379 * The number of WRs needed for an skb depends on the number of fragments380 * in the skb and whether it has any payload in its main body. This maps the381 * length of the gather list represented by an skb into the # of necessary WRs.382 * The extra two fragments are for iscsi bhs and payload padding.383 */384#define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2)385 386static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk)387{388 csk->wr_pending_head = csk->wr_pending_tail = NULL;389}390 391static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk,392 struct sk_buff *skb)393{394 cxgbi_skcb_tx_wr_next(skb) = NULL;395 /*396 * We want to take an extra reference since both us and the driver397 * need to free the packet before it's really freed.398 */399 skb_get(skb);400 401 if (!csk->wr_pending_head)402 csk->wr_pending_head = skb;403 else404 cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb;405 csk->wr_pending_tail = skb;406}407 408static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk)409{410 int n = 0;411 const struct sk_buff *skb = csk->wr_pending_head;412 413 while (skb) {414 n += skb->csum;415 skb = cxgbi_skcb_tx_wr_next(skb);416 }417 return n;418}419 420static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk)421{422 return csk->wr_pending_head;423}424 425static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk)426{427 struct sk_buff *skb = csk->wr_pending_head;428 429 if (likely(skb)) {430 csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb);431 cxgbi_skcb_tx_wr_next(skb) = NULL;432 }433 return skb;434}435 436void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *);437void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *);438void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *);439void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int);440void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *);441void cxgbi_sock_closed(struct cxgbi_sock *);442void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int);443void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *);444void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *);445void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32);446void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int,447 int);448unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int);449void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *);450 451struct cxgbi_hba {452 struct net_device *ndev;453 struct net_device *vdev; /* vlan dev */454 struct Scsi_Host *shost;455 struct cxgbi_device *cdev;456 __be32 ipv4addr;457 unsigned char port_id;458};459 460struct cxgbi_ports_map {461 unsigned int max_connect;462 unsigned int used;463 unsigned short sport_base;464 spinlock_t lock;465 unsigned int next;466 struct cxgbi_sock **port_csk;467};468 469#define CXGBI_FLAG_DEV_T3 0x1470#define CXGBI_FLAG_DEV_T4 0x2471#define CXGBI_FLAG_ADAPTER_RESET 0x4472#define CXGBI_FLAG_IPV4_SET 0x10473#define CXGBI_FLAG_USE_PPOD_OFLDQ 0x40474#define CXGBI_FLAG_DDP_OFF 0x100475#define CXGBI_FLAG_DEV_ISO_OFF 0x400476 477struct cxgbi_device {478 struct list_head list_head;479 struct list_head rcu_node;480 unsigned int flags;481 struct net_device **ports;482 void *lldev;483 struct cxgbi_hba **hbas;484 const unsigned short *mtus;485 unsigned char nmtus;486 unsigned char nports;487 struct pci_dev *pdev;488 struct iscsi_transport *itp;489 struct module *owner;490 491 unsigned int pfvf;492 unsigned int rx_credit_thres;493 unsigned int skb_tx_rsvd;494 u32 skb_iso_txhdr;495 unsigned int skb_rx_extra; /* for msg coalesced mode */496 unsigned int tx_max_size;497 unsigned int rx_max_size;498 unsigned int rxq_idx_cntr;499 struct cxgbi_ports_map pmap;500 501 struct cxgbi_ppm* (*cdev2ppm)(struct cxgbi_device *);502 int (*csk_ddp_set_map)(struct cxgbi_ppm *, struct cxgbi_sock *,503 struct cxgbi_task_tag_info *);504 void (*csk_ddp_clear_map)(struct cxgbi_device *cdev,505 struct cxgbi_ppm *,506 struct cxgbi_task_tag_info *);507 int (*csk_ddp_setup_digest)(struct cxgbi_sock *,508 unsigned int, int, int);509 int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *,510 unsigned int, int);511 512 void (*csk_release_offload_resources)(struct cxgbi_sock *);513 u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32);514 int (*csk_push_tx_frames)(struct cxgbi_sock *, int);515 void (*csk_send_abort_req)(struct cxgbi_sock *);516 void (*csk_send_close_req)(struct cxgbi_sock *);517 int (*csk_alloc_cpls)(struct cxgbi_sock *);518 int (*csk_init_act_open)(struct cxgbi_sock *);519 520 void *dd_data;521};522#define cxgbi_cdev_priv(cdev) ((cdev)->dd_data)523 524struct cxgbi_conn {525 struct cxgbi_endpoint *cep;526 struct iscsi_conn *iconn;527 struct cxgbi_hba *chba;528 u32 task_idx_bits;529 unsigned int ddp_full;530 unsigned int ddp_tag_full;531};532 533struct cxgbi_endpoint {534 struct cxgbi_conn *cconn;535 struct cxgbi_hba *chba;536 struct cxgbi_sock *csk;537};538 539struct cxgbi_task_data {540#define CXGBI_TASK_SGL_CHECKED 0x1541#define CXGBI_TASK_SGL_COPY 0x2542 u8 flags;543 unsigned short nr_frags;544 struct page_frag frags[MAX_SKB_FRAGS];545 struct sk_buff *skb;546 unsigned int dlen;547 unsigned int offset;548 unsigned int count;549 unsigned int sgoffset;550 u32 total_count;551 u32 total_offset;552 u32 max_xmit_dlength;553 struct cxgbi_task_tag_info ttinfo;554};555#define iscsi_task_cxgbi_data(task) \556 ((task)->dd_data + sizeof(struct iscsi_tcp_task))557 558struct cxgbi_iso_info {559#define CXGBI_ISO_INFO_FSLICE 0x1560#define CXGBI_ISO_INFO_LSLICE 0x2561#define CXGBI_ISO_INFO_IMM_ENABLE 0x4562 u8 flags;563 u8 op;564 u8 ahs;565 u8 num_pdu;566 u32 mpdu;567 u32 burst_size;568 u32 len;569 u32 segment_offset;570 u32 datasn_offset;571 u32 buffer_offset;572};573 574static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr)575{576 if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET)577 chba->ipv4addr = ipaddr;578 else579 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n",580 chba->ndev->name);581}582 583struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int);584void cxgbi_device_unregister(struct cxgbi_device *);585void cxgbi_device_unregister_all(unsigned int flag);586struct cxgbi_device *cxgbi_device_find_by_lldev(void *);587struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *);588struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *,589 int *);590int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int,591 const struct scsi_host_template *,592 struct scsi_transport_template *);593void cxgbi_hbas_remove(struct cxgbi_device *);594 595int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,596 unsigned int max_conn);597void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev);598 599void cxgbi_conn_tx_open(struct cxgbi_sock *);600void cxgbi_conn_pdu_ready(struct cxgbi_sock *);601int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8);602int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int);603int cxgbi_conn_xmit_pdu(struct iscsi_task *);604 605void cxgbi_cleanup_task(struct iscsi_task *task);606 607umode_t cxgbi_attr_is_visible(int param_type, int param);608void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *);609int cxgbi_set_conn_param(struct iscsi_cls_conn *,610 enum iscsi_param, char *, int);611int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param, char *);612struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32);613int cxgbi_bind_conn(struct iscsi_cls_session *,614 struct iscsi_cls_conn *, u64, int);615void cxgbi_destroy_session(struct iscsi_cls_session *);616struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *,617 u16, u16, u32);618int cxgbi_set_host_param(struct Scsi_Host *,619 enum iscsi_host_param, char *, int);620int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *);621struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *,622 struct sockaddr *, int);623int cxgbi_ep_poll(struct iscsi_endpoint *, int);624void cxgbi_ep_disconnect(struct iscsi_endpoint *);625 626int cxgbi_iscsi_init(struct iscsi_transport *,627 struct scsi_transport_template **);628void cxgbi_iscsi_cleanup(struct iscsi_transport *,629 struct scsi_transport_template **);630void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *);631int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int,632 unsigned int, unsigned int);633int cxgbi_ddp_cleanup(struct cxgbi_device *);634void cxgbi_ddp_page_size_factor(int *);635void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *,636 struct cxgbi_task_tag_info *,637 struct scatterlist **sg_pp, unsigned int *sg_off);638int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev,639 struct cxgbi_tag_format *tformat,640 unsigned int iscsi_size, unsigned int llimit,641 unsigned int start, unsigned int rsvd_factor,642 unsigned int edram_start, unsigned int edram_size);643#endif /*__LIBCXGBI_H__*/644