diff options
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.h')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h index e9ebe0b2263d..0bdd7e77e5db 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -98,8 +98,13 @@ #define SHIFT_4K 12 #define SIZE_4K (1ULL << SHIFT_4K) #define MASK_4K (~(SIZE_4K-1)) - /* support up to 512KB in one RDMA */ -#define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K) + +/* Default support is 512KB I/O size */ +#define ISER_DEF_MAX_SECTORS 1024 +#define ISCSI_ISER_DEF_SG_TABLESIZE ((ISER_DEF_MAX_SECTORS * 512) >> SHIFT_4K) +/* Maximum support is 8MB I/O size */ +#define ISCSI_ISER_MAX_SG_TABLESIZE ((16384 * 512) >> SHIFT_4K) + #define ISER_DEF_XMIT_CMDS_DEFAULT 512 #if ISCSI_DEF_XMIT_CMDS_MAX > ISER_DEF_XMIT_CMDS_DEFAULT #define ISER_DEF_XMIT_CMDS_MAX ISCSI_DEF_XMIT_CMDS_MAX @@ -504,6 +509,8 @@ struct ib_conn { * @rx_desc_head: head of rx_descs cyclic buffer * @rx_descs: rx buffers array (cyclic buffer) * @num_rx_descs: number of rx descriptors + * @scsi_sg_tablesize: scsi host sg_tablesize + * @scsi_max_sectors: scsi host max sectors */ struct iser_conn { struct ib_conn ib_conn; @@ -528,6 +535,8 @@ struct iser_conn { unsigned int rx_desc_head; struct iser_rx_desc *rx_descs; u32 num_rx_descs; + unsigned short scsi_sg_tablesize; + unsigned int scsi_max_sectors; }; /** @@ -583,6 +592,7 @@ extern struct iser_global ig; extern int iser_debug_level; extern bool iser_pi_enable; extern int iser_pi_guard; +extern unsigned int iser_max_sectors; int iser_assign_reg_ops(struct iser_device *device); |