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IB/iser: Introduce struct iser_reg_resources

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Have fast_reg_descriptor hold struct iser_reg_resources
(mr, frpl, valid flag). This will be useful when the
actual buffer registration routines will be passed with
the needed registration resources (i.e. iser_reg_resources)
without being aware of their nature (i.e. data or protection).

In order to achieve this, we remove reg_indicators flags container
and place specific flags (mr_valid) within iser_reg_resources struct.
We also place the sig_mr_valid and sig_protcted flags in iser_pi_context.

This patch also modifies iser_fast_reg_mr to receive the
reg_resources instead of the fast_reg_descriptor and a data/protection
indicator.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Adir Lev <adirl@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
2015-08-06 18:32:53 +03:00
committed by Doug Ledford
parent ea18f5d777
commit d711d81d64
3 changed files with 91 additions and 81 deletions
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36
drivers/infiniband/ulp/iser/iscsi_iser.h
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@@ -367,41 +367,45 @@ struct iser_device {
#define ISER_CHECK_REFTAG 0x0f
#define ISER_CHECK_APPTAG 0x30
enum iser_reg_indicator {
ISER_DATA_KEY_VALID = 1 << 0,
ISER_PROT_KEY_VALID = 1 << 1,
ISER_SIG_KEY_VALID = 1 << 2,
ISER_FASTREG_PROTECTED = 1 << 3,
/**
* struct iser_reg_resources - Fast registration recources
*
* @mr: memory region
* @frpl: fast reg page list
* @mr_valid: is mr valid indicator
*/
struct iser_reg_resources {
struct ib_mr *mr;
struct ib_fast_reg_page_list *frpl;
u8 mr_valid:1;
};
/**
* struct iser_pi_context - Protection information context
*
* @prot_mr: protection memory region
* @prot_frpl: protection fastreg page list
* @sig_mr: signature feature enabled memory region
* @rsc: protection buffer registration resources
* @sig_mr: signature enable memory region
* @sig_mr_valid: is sig_mr valid indicator
* @sig_protected: is region protected indicator
*/
struct iser_pi_context {
struct ib_mr *prot_mr;
struct ib_fast_reg_page_list *prot_frpl;
struct iser_reg_resources rsc;
struct ib_mr *sig_mr;
u8 sig_mr_valid:1;
u8 sig_protected:1;
};
/**
* struct fast_reg_descriptor - Fast registration descriptor
*
* @list: entry in connection fastreg pool
* @data_mr: data memory region
* @data_frpl: data fastreg page list
* @rsc: data buffer registration resources
* @pi_ctx: protection information context
* @reg_indicators: fast registration indicators
*/
struct fast_reg_descriptor {
struct list_head list;
struct ib_mr *data_mr;
struct ib_fast_reg_page_list *data_frpl;
struct iser_reg_resources rsc;
struct iser_pi_context *pi_ctx;
u8 reg_indicators;
};
/**