From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/drivers/infiniband/ulp/srp/ib_srp.h | 61 +++++++++++++++++-------------
1 files changed, 34 insertions(+), 27 deletions(-)
diff --git a/kernel/drivers/infiniband/ulp/srp/ib_srp.h b/kernel/drivers/infiniband/ulp/srp/ib_srp.h
index a270608..85bac20 100644
--- a/kernel/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/kernel/drivers/infiniband/ulp/srp/ib_srp.h
@@ -44,7 +44,6 @@
#include <rdma/ib_verbs.h>
#include <rdma/ib_sa.h>
#include <rdma/ib_cm.h>
-#include <rdma/ib_fmr_pool.h>
#include <rdma/rdma_cm.h>
enum {
@@ -63,10 +62,23 @@
SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE -
SRP_TSK_MGMT_SQ_SIZE,
- SRP_TAG_NO_REQ = ~0U,
- SRP_TAG_TSK_MGMT = 1U << 31,
-
SRP_MAX_PAGES_PER_MR = 512,
+
+ SRP_MAX_ADD_CDB_LEN = 16,
+
+ SRP_MAX_IMM_SGE = 2,
+ SRP_MAX_SGE = SRP_MAX_IMM_SGE + 1,
+ /*
+ * Choose the immediate data offset such that a 32 byte CDB still fits.
+ */
+ SRP_IMM_DATA_OFFSET = sizeof(struct srp_cmd) +
+ SRP_MAX_ADD_CDB_LEN +
+ sizeof(struct srp_imm_buf),
+};
+
+enum {
+ SRP_TAG_NO_REQ = ~0U,
+ SRP_TAG_TSK_MGMT = BIT(31),
};
enum srp_target_state {
@@ -84,8 +96,7 @@
/*
* @mr_page_mask: HCA memory registration page mask.
* @mr_page_size: HCA memory registration page size.
- * @mr_max_size: Maximum size in bytes of a single FMR / FR registration
- * request.
+ * @mr_max_size: Maximum size in bytes of a single FR registration request.
*/
struct srp_device {
struct list_head dev_list;
@@ -96,9 +107,7 @@
int mr_page_size;
int mr_max_size;
int max_pages_per_mr;
- bool has_fmr;
bool has_fr;
- bool use_fmr;
bool use_fast_reg;
};
@@ -116,11 +125,7 @@
struct srp_request {
struct scsi_cmnd *scmnd;
struct srp_iu *cmd;
- union {
- struct ib_pool_fmr **fmr_list;
- struct srp_fr_desc **fr_list;
- };
- u64 *map_page;
+ struct srp_fr_desc **fr_list;
struct srp_direct_buf *indirect_desc;
dma_addr_t indirect_dma_addr;
short nmdesc;
@@ -130,6 +135,8 @@
/**
* struct srp_rdma_ch
* @comp_vector: Completion vector used by this RDMA channel.
+ * @max_it_iu_len: Maximum initiator-to-target information unit length.
+ * @max_ti_iu_len: Maximum target-to-initiator information unit length.
*/
struct srp_rdma_ch {
/* These are RW in the hot path, and commonly used together */
@@ -142,10 +149,11 @@
struct ib_cq *send_cq;
struct ib_cq *recv_cq;
struct ib_qp *qp;
- union {
- struct ib_fmr_pool *fmr_pool;
- struct srp_fr_pool *fr_pool;
- };
+ struct srp_fr_pool *fr_pool;
+ uint32_t max_it_iu_len;
+ uint32_t max_ti_iu_len;
+ u8 max_imm_sge;
+ bool use_imm_data;
/* Everything above this point is used in the hot path of
* command processing. Try to keep them packed into cachelines.
@@ -169,7 +177,6 @@
struct srp_iu **tx_ring;
struct srp_iu **rx_ring;
struct srp_request *req_ring;
- int max_ti_iu_len;
int comp_vector;
u64 tsk_mgmt_tag;
@@ -194,7 +201,7 @@
u32 ch_count;
u32 lkey;
enum srp_target_state state;
- unsigned int max_iu_len;
+ uint32_t max_it_iu_size;
unsigned int cmd_sg_cnt;
unsigned int indirect_size;
bool allow_ext_sg;
@@ -231,11 +238,13 @@
union {
struct sockaddr_in ip4;
struct sockaddr_in6 ip6;
+ struct sockaddr sa;
struct sockaddr_storage ss;
} src;
union {
struct sockaddr_in ip4;
struct sockaddr_in6 ip6;
+ struct sockaddr sa;
struct sockaddr_storage ss;
} dst;
bool src_specified;
@@ -259,6 +268,8 @@
void *buf;
size_t size;
enum dma_data_direction direction;
+ u32 num_sge;
+ struct ib_sge sge[SRP_MAX_SGE];
struct ib_cqe cqe;
};
@@ -289,7 +300,7 @@
int max_page_list_len;
spinlock_t lock;
struct list_head free_list;
- struct srp_fr_desc desc[0];
+ struct srp_fr_desc desc[];
};
/**
@@ -299,19 +310,15 @@
* @pages: Array with DMA addresses of pages being considered for
* memory registration.
* @base_dma_addr: DMA address of the first page that has not yet been mapped.
- * @dma_len: Number of bytes that will be registered with the next
- * FMR or FR memory registration call.
+ * @dma_len: Number of bytes that will be registered with the next FR
+ * memory registration call.
* @total_len: Total number of bytes in the sg-list being mapped.
* @npages: Number of page addresses in the pages[] array.
- * @nmdesc: Number of FMR or FR memory descriptors used for mapping.
+ * @nmdesc: Number of FR memory descriptors used for mapping.
* @ndesc: Number of SRP buffer descriptors that have been filled in.
*/
struct srp_map_state {
union {
- struct {
- struct ib_pool_fmr **next;
- struct ib_pool_fmr **end;
- } fmr;
struct {
struct srp_fr_desc **next;
struct srp_fr_desc **end;
--
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