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xprtrdma: Take struct ib_qp_attr and ib_qp_init_attr off the stack 

Reduce stack footprint of the connection upcall handler function.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2015-01-21 11:03:35 -05:00 committed by Anna Schumaker
parent 7bc7972cdd
commit ce1ab9ab47
2 changed files with 10 additions and 7 deletions
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15
net/sunrpc/xprtrdma/verbs.c
View File

@ -425,8 +425,8 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
struct sockaddr_in *addr = (struct sockaddr_in *) &ep->rep_remote_addr;
#endif
struct ib_qp_attr attr;
struct ib_qp_init_attr iattr;
struct ib_qp_attr *attr = &ia->ri_qp_attr;
struct ib_qp_init_attr *iattr = &ia->ri_qp_init_attr;
int connstate = 0;
switch (event->event) {
@ -449,12 +449,13 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
break;
case RDMA_CM_EVENT_ESTABLISHED:
connstate = 1;
ib_query_qp(ia->ri_id->qp, &attr,
IB_QP_MAX_QP_RD_ATOMIC | IB_QP_MAX_DEST_RD_ATOMIC,
&iattr);
ib_query_qp(ia->ri_id->qp, attr,
IB_QP_MAX_QP_RD_ATOMIC | IB_QP_MAX_DEST_RD_ATOMIC,
iattr);
dprintk("RPC: %s: %d responder resources"
" (%d initiator)\n",
__func__, attr.max_dest_rd_atomic, attr.max_rd_atomic);
__func__, attr->max_dest_rd_atomic,
attr->max_rd_atomic);
goto connected;
case RDMA_CM_EVENT_CONNECT_ERROR:
connstate = -ENOTCONN;
@ -487,7 +488,7 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
if (connstate == 1) {
int ird = attr.max_dest_rd_atomic;
int ird = attr->max_dest_rd_atomic;
int tird = ep->rep_remote_cma.responder_resources;
printk(KERN_INFO "rpcrdma: connection to %pI4:%u "
"on %s, memreg %d slots %d ird %d%s\n",

2
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -71,6 +71,8 @@ struct rpcrdma_ia {
enum rpcrdma_memreg ri_memreg_strategy;
unsigned int ri_max_frmr_depth;
struct ib_device_attr ri_devattr;
struct ib_qp_attr ri_qp_attr;
struct ib_qp_init_attr ri_qp_init_attr;
};
/*