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IB/iser: Initialize T10-PI resources

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During connection establishment we also initialize T10-PI resources
(QP, PI contexts) in order to support SCSI's protection operations.

Signed-off-by: Alex Tabachnik <alext@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Alex Tabachnik
2014-03-05 19:43:47 +02:00
committed by Roland Dreier
parent 7f73384752
commit 6b5a8fb0d2
2 changed files with 91 additions and 9 deletions
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21
drivers/infiniband/ulp/iser/iscsi_iser.h
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@@ -134,6 +134,15 @@
ISER_MAX_TX_MISC_PDUS + \
ISER_MAX_RX_MISC_PDUS)
/* Max registration work requests per command */
#define ISER_MAX_REG_WR_PER_CMD 5
/* For Signature we don't support DATAOUTs so no need to make room for them */
#define ISER_QP_SIG_MAX_REQ_DTOS (ISER_DEF_XMIT_CMDS_MAX * \
(1 + ISER_MAX_REG_WR_PER_CMD) + \
ISER_MAX_TX_MISC_PDUS + \
ISER_MAX_RX_MISC_PDUS)
#define ISER_VER 0x10
#define ISER_WSV 0x08
#define ISER_RSV 0x04
@@ -281,7 +290,16 @@ struct iser_device {
};
enum iser_reg_indicator {
ISER_DATA_KEY_VALID = 1 << 0,
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_pi_context {
struct ib_mr *prot_mr;
struct ib_fast_reg_page_list *prot_frpl;
struct ib_mr *sig_mr;
};
struct fast_reg_descriptor {
@@ -289,6 +307,7 @@ struct fast_reg_descriptor {
/* For fast registration - FRWR */
struct ib_mr *data_mr;
struct ib_fast_reg_page_list *data_frpl;
struct iser_pi_context *pi_ctx;
/* registration indicators container */
u8 reg_indicators;
};