xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

IB/srp: Add RDMA/CM support

Browse Source 
Since the SRP_LOGIN_REQ defined in the SRP standard is larger than
what fits in the RDMA/CM login request private data, introduce a new
login request format for the RDMA/CM.

Note: since srp_daemon and ibsrpdm rely on the subnet manager and
since there is no equivalent of the IB subnet manager in non-IB
networks, login has to be performed manually for non-IB networks.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche
2018-01-22 14:27:12 -08:00
committed by Doug Ledford
parent 172856eac7
commit 19f313438c
3 changed files with 603 additions and 151 deletions
Download Patch File Download Diff File Expand all files Collapse all files

695
drivers/infiniband/ulp/srp/ib_srp.c
View File

File diff suppressed because it is too large Load Diff

42
drivers/infiniband/ulp/srp/ib_srp.h
View File

@@ -45,6 +45,7 @@
#include <rdma/ib_sa.h>
#include <rdma/ib_cm.h>
#include <rdma/ib_fmr_pool.h>
#include <rdma/rdma_cm.h>
enum {
SRP_PATH_REC_TIMEOUT_MS = 1000,
@@ -153,11 +154,18 @@ struct srp_rdma_ch {
struct completion done;
int status;
struct sa_path_rec path;
struct ib_sa_query *path_query;
int path_query_id;
union {
struct ib_cm {
struct sa_path_rec path;
struct ib_sa_query *path_query;
int path_query_id;
struct ib_cm_id *cm_id;
} ib_cm;
struct rdma_cm {
struct rdma_cm_id *cm_id;
} rdma_cm;
};
struct ib_cm_id *cm_id;
struct srp_iu **tx_ring;
struct srp_iu **rx_ring;
struct srp_request *req_ring;
@@ -182,6 +190,7 @@ struct srp_target_port {
/* read only in the hot path */
u32 global_rkey;
struct srp_rdma_ch *ch;
struct net *net;
u32 ch_count;
u32 lkey;
enum srp_target_state state;
@@ -194,7 +203,6 @@ struct srp_target_port {
union ib_gid sgid;
__be64 id_ext;
__be64 ioc_guid;
__be64 service_id;
__be64 initiator_ext;
u16 io_class;
struct srp_host *srp_host;
@@ -210,8 +218,28 @@ struct srp_target_port {
int comp_vector;
int tl_retry_count;
union ib_gid orig_dgid;
__be16 pkey;
bool using_rdma_cm;
union {
struct {
__be64 service_id;
union ib_gid orig_dgid;
__be16 pkey;
} ib_cm;
struct {
union {
struct sockaddr_in ip4;
struct sockaddr_in6 ip6;
struct sockaddr_storage ss;
} src;
union {
struct sockaddr_in ip4;
struct sockaddr_in6 ip6;
struct sockaddr_storage ss;
} dst;
bool src_specified;
} rdma_cm;
};
u32 rq_tmo_jiffies;