forked from Minki/linux
[SCSI] libcxgbi: common library for cxgb3i and cxgb4i
[PATCH v5 1/3] libcxgbi: common library for cxgb3i and cxgb4i From: Karen Xie <kxie@chelsio.com> Extracts common functions to libcxgbi. Signed-off-by: Karen Xie <kxie@chelsio.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
kxie@chelsio.com
James Bottomley
parent
ec21b3b0db
commit
9ba682f01e
2610
drivers/scsi/cxgbi/libcxgbi.c
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2610
drivers/scsi/cxgbi/libcxgbi.c
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File diff suppressed because it is too large
Load Diff
753
drivers/scsi/cxgbi/libcxgbi.h
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753
drivers/scsi/cxgbi/libcxgbi.h
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@ -0,0 +1,753 @@
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/*
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* libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver.
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*
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* Copyright (c) 2010 Chelsio Communications, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Karen Xie (kxie@chelsio.com)
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* Written by: Rakesh Ranjan (rranjan@chelsio.com)
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*/
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#ifndef __LIBCXGBI_H__
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#define __LIBCXGBI_H__
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/debugfs.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/if_vlan.h>
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#include <linux/scatterlist.h>
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#include <linux/skbuff.h>
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#include <linux/vmalloc.h>
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#include <scsi/scsi_device.h>
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#include <scsi/libiscsi_tcp.h>
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enum cxgbi_dbg_flag {
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CXGBI_DBG_ISCSI,
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CXGBI_DBG_DDP,
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CXGBI_DBG_TOE,
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CXGBI_DBG_SOCK,
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CXGBI_DBG_PDU_TX,
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CXGBI_DBG_PDU_RX,
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CXGBI_DBG_DEV,
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};
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#define log_debug(level, fmt, ...) \
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do { \
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if (dbg_level & (level)) \
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pr_info(fmt, ##__VA_ARGS__); \
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} while (0)
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/* max. connections per adapter */
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#define CXGBI_MAX_CONN 16384
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/* always allocate rooms for AHS */
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#define SKB_TX_ISCSI_PDU_HEADER_MAX \
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(sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE)
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#define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/
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/*
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* align pdu size to multiple of 512 for better performance
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*/
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#define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0)
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#define ULP2_MODE_ISCSI 2
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#define ULP2_MAX_PKT_SIZE 16224
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#define ULP2_MAX_PDU_PAYLOAD \
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(ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN)
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/*
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* For iscsi connections HW may inserts digest bytes into the pdu. Those digest
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* bytes are not sent by the host but are part of the TCP payload and therefore
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* consume TCP sequence space.
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*/
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static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 };
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static inline unsigned int cxgbi_ulp_extra_len(int submode)
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{
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return ulp2_extra_len[submode & 3];
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}
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/*
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* struct pagepod_hdr, pagepod - pagepod format
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*/
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#define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */
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#define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */
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#define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */
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#define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */
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struct cxgbi_pagepod_hdr {
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u32 vld_tid;
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u32 pgsz_tag_clr;
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u32 max_offset;
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u32 page_offset;
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u64 rsvd;
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};
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#define PPOD_PAGES_MAX 4
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struct cxgbi_pagepod {
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struct cxgbi_pagepod_hdr hdr;
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u64 addr[PPOD_PAGES_MAX + 1];
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};
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struct cxgbi_tag_format {
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unsigned char sw_bits;
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unsigned char rsvd_bits;
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unsigned char rsvd_shift;
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unsigned char filler[1];
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u32 rsvd_mask;
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};
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struct cxgbi_gather_list {
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unsigned int tag;
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unsigned int length;
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unsigned int offset;
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unsigned int nelem;
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struct page **pages;
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dma_addr_t phys_addr[0];
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};
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struct cxgbi_ddp_info {
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struct kref refcnt;
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struct cxgbi_device *cdev;
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struct pci_dev *pdev;
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unsigned int max_txsz;
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unsigned int max_rxsz;
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unsigned int llimit;
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unsigned int ulimit;
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unsigned int nppods;
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unsigned int idx_last;
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unsigned char idx_bits;
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unsigned char filler[3];
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unsigned int idx_mask;
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unsigned int rsvd_tag_mask;
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spinlock_t map_lock;
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struct cxgbi_gather_list **gl_map;
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struct sk_buff **gl_skb;
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};
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#define DDP_PGIDX_MAX 4
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#define DDP_THRESHOLD 2048
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#define PPOD_PAGES_SHIFT 2 /* 4 pages per pod */
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#define PPOD_SIZE sizeof(struct cxgbi_pagepod) /* 64 */
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#define PPOD_SIZE_SHIFT 6
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#define ULPMEM_DSGL_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
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#define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */
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#define PCIE_MEMWIN_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
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#define PPOD_COLOR_SHIFT 0
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#define PPOD_COLOR(x) ((x) << PPOD_COLOR_SHIFT)
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#define PPOD_IDX_SHIFT 6
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#define PPOD_IDX_MAX_SIZE 24
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#define PPOD_TID_SHIFT 0
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#define PPOD_TID(x) ((x) << PPOD_TID_SHIFT)
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#define PPOD_TAG_SHIFT 6
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#define PPOD_TAG(x) ((x) << PPOD_TAG_SHIFT)
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#define PPOD_VALID_SHIFT 24
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#define PPOD_VALID(x) ((x) << PPOD_VALID_SHIFT)
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#define PPOD_VALID_FLAG PPOD_VALID(1U)
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#define W_TCB_ULP_TYPE 0
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#define TCB_ULP_TYPE_SHIFT 0
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#define TCB_ULP_TYPE_MASK 0xfULL
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#define TCB_ULP_TYPE(x) ((x) << TCB_ULP_TYPE_SHIFT)
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#define W_TCB_ULP_RAW 0
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#define TCB_ULP_RAW_SHIFT 4
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#define TCB_ULP_RAW_MASK 0xffULL
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#define TCB_ULP_RAW(x) ((x) << TCB_ULP_RAW_SHIFT)
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/*
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* sge_opaque_hdr -
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* Opaque version of structure the SGE stores at skb->head of TX_DATA packets
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* and for which we must reserve space.
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*/
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struct sge_opaque_hdr {
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void *dev;
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dma_addr_t addr[MAX_SKB_FRAGS + 1];
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};
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struct cxgbi_sock {
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struct cxgbi_device *cdev;
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int tid;
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int atid;
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unsigned long flags;
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unsigned int mtu;
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unsigned short rss_qid;
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unsigned short txq_idx;
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unsigned short advmss;
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unsigned int tx_chan;
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unsigned int rx_chan;
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unsigned int mss_idx;
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unsigned int smac_idx;
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unsigned char port_id;
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int wr_max_cred;
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int wr_cred;
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int wr_una_cred;
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unsigned char hcrc_len;
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unsigned char dcrc_len;
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void *l2t;
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struct sk_buff *wr_pending_head;
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struct sk_buff *wr_pending_tail;
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struct sk_buff *cpl_close;
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struct sk_buff *cpl_abort_req;
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struct sk_buff *cpl_abort_rpl;
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struct sk_buff *skb_ulp_lhdr;
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spinlock_t lock;
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struct kref refcnt;
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unsigned int state;
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struct sockaddr_in saddr;
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struct sockaddr_in daddr;
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struct dst_entry *dst;
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struct sk_buff_head receive_queue;
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struct sk_buff_head write_queue;
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struct timer_list retry_timer;
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int err;
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rwlock_t callback_lock;
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void *user_data;
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u32 rcv_nxt;
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u32 copied_seq;
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u32 rcv_wup;
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u32 snd_nxt;
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u32 snd_una;
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u32 write_seq;
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};
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/*
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* connection states
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*/
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enum cxgbi_sock_states{
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CTP_CLOSED,
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CTP_CONNECTING,
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CTP_ACTIVE_OPEN,
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CTP_ESTABLISHED,
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CTP_ACTIVE_CLOSE,
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CTP_PASSIVE_CLOSE,
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CTP_CLOSE_WAIT_1,
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CTP_CLOSE_WAIT_2,
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CTP_ABORTING,
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};
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/*
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* Connection flags -- many to track some close related events.
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*/
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enum cxgbi_sock_flags {
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CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */
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CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */
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CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */
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CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */
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CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */
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CTPF_HAS_ATID, /* reserved atid */
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CTPF_HAS_TID, /* reserved hw tid */
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CTPF_OFFLOAD_DOWN, /* offload function off */
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};
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struct cxgbi_skb_rx_cb {
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__u32 ddigest;
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__u32 pdulen;
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};
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struct cxgbi_skb_tx_cb {
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void *l2t;
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struct sk_buff *wr_next;
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};
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enum cxgbi_skcb_flags {
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SKCBF_TX_NEED_HDR, /* packet needs a header */
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SKCBF_RX_COALESCED, /* received whole pdu */
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SKCBF_RX_HDR, /* recieved pdu header */
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SKCBF_RX_DATA, /* recieved pdu payload */
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SKCBF_RX_STATUS, /* recieved ddp status */
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SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */
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SKCBF_RX_HCRC_ERR, /* header digest error */
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SKCBF_RX_DCRC_ERR, /* data digest error */
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SKCBF_RX_PAD_ERR, /* padding byte error */
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};
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struct cxgbi_skb_cb {
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unsigned char ulp_mode;
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unsigned long flags;
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unsigned int seq;
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union {
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struct cxgbi_skb_rx_cb rx;
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struct cxgbi_skb_tx_cb tx;
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};
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};
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#define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0]))
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#define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags)
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#define cxgbi_skcb_ulp_mode(skb) (CXGBI_SKB_CB(skb)->ulp_mode)
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#define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq)
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#define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest)
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#define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen)
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#define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next)
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static inline void cxgbi_skcb_set_flag(struct sk_buff *skb,
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enum cxgbi_skcb_flags flag)
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{
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__set_bit(flag, &(cxgbi_skcb_flags(skb)));
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}
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static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb,
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enum cxgbi_skcb_flags flag)
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{
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__clear_bit(flag, &(cxgbi_skcb_flags(skb)));
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}
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static inline int cxgbi_skcb_test_flag(struct sk_buff *skb,
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enum cxgbi_skcb_flags flag)
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{
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return test_bit(flag, &(cxgbi_skcb_flags(skb)));
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}
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static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk,
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enum cxgbi_sock_flags flag)
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{
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__set_bit(flag, &csk->flags);
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log_debug(1 << CXGBI_DBG_SOCK,
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"csk 0x%p,%u,0x%lx, bit %d.\n",
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csk, csk->state, csk->flags, flag);
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}
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static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk,
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enum cxgbi_sock_flags flag)
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{
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__clear_bit(flag, &csk->flags);
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log_debug(1 << CXGBI_DBG_SOCK,
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"csk 0x%p,%u,0x%lx, bit %d.\n",
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csk, csk->state, csk->flags, flag);
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}
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static inline int cxgbi_sock_flag(struct cxgbi_sock *csk,
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enum cxgbi_sock_flags flag)
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{
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if (csk == NULL)
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return 0;
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return test_bit(flag, &csk->flags);
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}
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static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state)
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{
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log_debug(1 << CXGBI_DBG_SOCK,
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"csk 0x%p,%u,0x%lx, state -> %u.\n",
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csk, csk->state, csk->flags, state);
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csk->state = state;
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}
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static inline void cxgbi_sock_free(struct kref *kref)
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{
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struct cxgbi_sock *csk = container_of(kref,
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struct cxgbi_sock,
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refcnt);
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if (csk) {
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log_debug(1 << CXGBI_DBG_SOCK,
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"free csk 0x%p, state %u, flags 0x%lx\n",
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csk, csk->state, csk->flags);
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kfree(csk);
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}
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}
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static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk)
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{
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log_debug(1 << CXGBI_DBG_SOCK,
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"%s, put csk 0x%p, ref %u-1.\n",
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fn, csk, atomic_read(&csk->refcnt.refcount));
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kref_put(&csk->refcnt, cxgbi_sock_free);
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}
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#define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk)
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static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk)
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{
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log_debug(1 << CXGBI_DBG_SOCK,
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"%s, get csk 0x%p, ref %u+1.\n",
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fn, csk, atomic_read(&csk->refcnt.refcount));
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kref_get(&csk->refcnt);
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}
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#define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk)
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static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk)
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{
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return csk->state >= CTP_ACTIVE_CLOSE;
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}
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static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk)
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{
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return csk->state == CTP_ESTABLISHED;
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}
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static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk)
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{
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struct sk_buff *skb;
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while ((skb = __skb_dequeue(&csk->write_queue)))
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__kfree_skb(skb);
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}
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static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win)
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{
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unsigned int wscale = 0;
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while (wscale < 14 && (65535 << wscale) < win)
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wscale++;
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return wscale;
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}
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static inline struct sk_buff *alloc_cpl(int cpl_len, int dlen, gfp_t gfp)
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{
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int wrlen = roundup(cpl_len, 16);
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struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp);
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if (skb) {
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__skb_put(skb, wrlen);
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memset(skb->head, 0, wrlen + dlen);
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} else
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pr_info("alloc cpl skb %u+%u, OOM.\n", cpl_len, dlen);
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return skb;
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}
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/*
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* The number of WRs needed for an skb depends on the number of fragments
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* in the skb and whether it has any payload in its main body. This maps the
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* length of the gather list represented by an skb into the # of necessary WRs.
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* The extra two fragments are for iscsi bhs and payload padding.
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*/
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#define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2)
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static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk)
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{
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csk->wr_pending_head = csk->wr_pending_tail = NULL;
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}
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static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk,
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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. We know there's
|
||||
* just one user currently so we use atomic_set rather than skb_get
|
||||
* to avoid the atomic op.
|
||||
*/
|
||||
atomic_set(&skb->users, 2);
|
||||
|
||||
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 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
|
||||
struct cxgbi_device {
|
||||
struct list_head list_head;
|
||||
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;
|
||||
|
||||
unsigned int pfvf;
|
||||
unsigned int snd_win;
|
||||
unsigned int rcv_win;
|
||||
unsigned int rx_credit_thres;
|
||||
unsigned int skb_tx_rsvd;
|
||||
unsigned int skb_rx_extra; /* for msg coalesced mode */
|
||||
unsigned int tx_max_size;
|
||||
unsigned int rx_max_size;
|
||||
struct cxgbi_ports_map pmap;
|
||||
struct cxgbi_tag_format tag_format;
|
||||
struct cxgbi_ddp_info *ddp;
|
||||
|
||||
void (*dev_ddp_cleanup)(struct cxgbi_device *);
|
||||
void (*csk_ddp_free_gl_skb)(struct cxgbi_ddp_info *, int, int);
|
||||
int (*csk_ddp_alloc_gl_skb)(struct cxgbi_ddp_info *, int, int, gfp_t);
|
||||
int (*csk_ddp_set)(struct cxgbi_sock *, struct cxgbi_pagepod_hdr *,
|
||||
unsigned int, unsigned int,
|
||||
struct cxgbi_gather_list *);
|
||||
void (*csk_ddp_clear)(struct cxgbi_hba *,
|
||||
unsigned int, unsigned int, unsigned int);
|
||||
int (*csk_ddp_setup_digest)(struct cxgbi_sock *,
|
||||
unsigned int, int, int, int);
|
||||
int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *,
|
||||
unsigned int, int, bool);
|
||||
|
||||
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;
|
||||
};
|
||||
|
||||
struct cxgbi_endpoint {
|
||||
struct cxgbi_conn *cconn;
|
||||
struct cxgbi_hba *chba;
|
||||
struct cxgbi_sock *csk;
|
||||
};
|
||||
|
||||
#define MAX_PDU_FRAGS ((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512)
|
||||
struct cxgbi_task_data {
|
||||
unsigned short nr_frags;
|
||||
skb_frag_t frags[MAX_PDU_FRAGS];
|
||||
struct sk_buff *skb;
|
||||
unsigned int offset;
|
||||
unsigned int count;
|
||||
unsigned int sgoffset;
|
||||
};
|
||||
|
||||
static inline int cxgbi_is_ddp_tag(struct cxgbi_tag_format *tformat, u32 tag)
|
||||
{
|
||||
return !(tag & (1 << (tformat->rsvd_bits + tformat->rsvd_shift - 1)));
|
||||
}
|
||||
|
||||
static inline int cxgbi_sw_tag_usable(struct cxgbi_tag_format *tformat,
|
||||
u32 sw_tag)
|
||||
{
|
||||
sw_tag >>= (32 - tformat->rsvd_bits);
|
||||
return !sw_tag;
|
||||
}
|
||||
|
||||
static inline u32 cxgbi_set_non_ddp_tag(struct cxgbi_tag_format *tformat,
|
||||
u32 sw_tag)
|
||||
{
|
||||
unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
|
||||
u32 mask = (1 << shift) - 1;
|
||||
|
||||
if (sw_tag && (sw_tag & ~mask)) {
|
||||
u32 v1 = sw_tag & ((1 << shift) - 1);
|
||||
u32 v2 = (sw_tag >> (shift - 1)) << shift;
|
||||
|
||||
return v2 | v1 | 1 << shift;
|
||||
}
|
||||
|
||||
return sw_tag | 1 << shift;
|
||||
}
|
||||
|
||||
static inline u32 cxgbi_ddp_tag_base(struct cxgbi_tag_format *tformat,
|
||||
u32 sw_tag)
|
||||
{
|
||||
u32 mask = (1 << tformat->rsvd_shift) - 1;
|
||||
|
||||
if (sw_tag && (sw_tag & ~mask)) {
|
||||
u32 v1 = sw_tag & mask;
|
||||
u32 v2 = sw_tag >> tformat->rsvd_shift;
|
||||
|
||||
v2 <<= tformat->rsvd_bits + tformat->rsvd_shift;
|
||||
|
||||
return v2 | v1;
|
||||
}
|
||||
|
||||
return sw_tag;
|
||||
}
|
||||
|
||||
static inline u32 cxgbi_tag_rsvd_bits(struct cxgbi_tag_format *tformat,
|
||||
u32 tag)
|
||||
{
|
||||
if (cxgbi_is_ddp_tag(tformat, tag))
|
||||
return (tag >> tformat->rsvd_shift) & tformat->rsvd_mask;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline u32 cxgbi_tag_nonrsvd_bits(struct cxgbi_tag_format *tformat,
|
||||
u32 tag)
|
||||
{
|
||||
unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
|
||||
u32 v1, v2;
|
||||
|
||||
if (cxgbi_is_ddp_tag(tformat, tag)) {
|
||||
v1 = tag & ((1 << tformat->rsvd_shift) - 1);
|
||||
v2 = (tag >> (shift + 1)) << tformat->rsvd_shift;
|
||||
} else {
|
||||
u32 mask = (1 << shift) - 1;
|
||||
tag &= ~(1 << shift);
|
||||
v1 = tag & mask;
|
||||
v2 = (tag >> 1) & ~mask;
|
||||
}
|
||||
return v1 | v2;
|
||||
}
|
||||
|
||||
static inline void *cxgbi_alloc_big_mem(unsigned int size,
|
||||
gfp_t gfp)
|
||||
{
|
||||
void *p = kmalloc(size, gfp);
|
||||
if (!p)
|
||||
p = vmalloc(size);
|
||||
if (p)
|
||||
memset(p, 0, size);
|
||||
return p;
|
||||
}
|
||||
|
||||
static inline void cxgbi_free_big_mem(void *addr)
|
||||
{
|
||||
if (is_vmalloc_addr(addr))
|
||||
vfree(addr);
|
||||
else
|
||||
kfree(addr);
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
static inline __be32 cxgbi_get_iscsi_ipv4(struct cxgbi_hba *chba)
|
||||
{
|
||||
return chba->ipv4addr;
|
||||
}
|
||||
|
||||
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 *);
|
||||
int cxgbi_hbas_add(struct cxgbi_device *, unsigned int, 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);
|
||||
|
||||
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_conn_param(struct iscsi_cls_conn *, 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_ppod_clear(struct cxgbi_pagepod *);
|
||||
void cxgbi_ddp_ppod_set(struct cxgbi_pagepod *, struct cxgbi_pagepod_hdr *,
|
||||
struct cxgbi_gather_list *, unsigned int);
|
||||
#endif /*__LIBCXGBI_H__*/
|
||||
Loading…
Reference in New Issue
Block a user