diff options
| author | Varun Prakash <varun@chelsio.com> | 2016-07-21 22:57:16 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-25 10:31:08 -0700 |
| commit | 71f7a00bd13d5b0a21a77c438007210bf0a06c91 (patch) | |
| tree | a906ea9686ec6edb79fd0de1d180f868efdff83e /drivers/scsi/cxgbi/libcxgbi.h | |
| parent | 5999299f1ce9e8610cb8263953f5767d4f840a3e (diff) | |
| download | linux-71f7a00bd13d5b0a21a77c438007210bf0a06c91.tar.gz | |
cxgb4i,libcxgbi: add iSCSI DDP support
Add iSCSI DDP support in cxgb4i driver using common iSCSI DDP Page Pod Manager. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/scsi/cxgbi/libcxgbi.h')
| -rw-r--r-- | drivers/scsi/cxgbi/libcxgbi.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h index 827afa720c8d..e7802738f5d2 100644 --- a/drivers/scsi/cxgbi/libcxgbi.h +++ b/drivers/scsi/cxgbi/libcxgbi.h @@ -24,9 +24,12 @@ #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, @@ -89,8 +92,6 @@ static inline unsigned int cxgbi_ulp_extra_len(int submode) #define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */ #define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */ -#define DDP_PGIDX_MAX 4 - /* * sge_opaque_hdr - * Opaque version of structure the SGE stores at skb->head of TX_DATA packets @@ -200,6 +201,8 @@ struct cxgbi_skb_tx_cb { 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 */ @@ -448,6 +451,9 @@ struct cxgbi_ports_map { #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 + struct cxgbi_device { struct list_head list_head; struct list_head rcu_node; @@ -471,6 +477,12 @@ struct cxgbi_device { 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); int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *, @@ -494,6 +506,8 @@ struct cxgbi_conn { struct iscsi_conn *iconn; struct cxgbi_hba *chba; u32 task_idx_bits; + unsigned int ddp_full; + unsigned int ddp_tag_full; }; struct cxgbi_endpoint { @@ -507,9 +521,11 @@ struct cxgbi_task_data { unsigned short nr_frags; struct page_frag frags[MAX_PDU_FRAGS]; struct sk_buff *skb; + unsigned int dlen; unsigned int offset; unsigned int count; unsigned int sgoffset; + struct cxgbi_task_tag_info ttinfo; }; #define iscsi_task_cxgbi_data(task) \ ((task)->dd_data + sizeof(struct iscsi_tcp_task)) @@ -591,4 +607,11 @@ 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); +void cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *, + struct cxgbi_tag_format *, unsigned int ppmax, + unsigned int llimit, unsigned int start, + unsigned int rsvd_factor); #endif /*__LIBCXGBI_H__*/ |