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authorChuck Lever <chuck.lever@oracle.com>2015-01-21 11:03:35 -0500
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2015-01-30 10:47:48 -0500
commitce1ab9ab47973dcff7548abda20e49add2c4ca95 (patch)
treea10f985b153136992204b307d890159471379a55 /net
parent7bc7972cdd1f137552ca979caa11c8acbe119ae8 (diff)
downloadop-kernel-dev-ce1ab9ab47973dcff7548abda20e49add2c4ca95.zip
op-kernel-dev-ce1ab9ab47973dcff7548abda20e49add2c4ca95.tar.gz
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>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/xprtrdma/verbs.c15
-rw-r--r--net/sunrpc/xprtrdma/xprt_rdma.h2
2 files changed, 10 insertions, 7 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 123bb04..958b372 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -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 @@ connected:
#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",
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index ec596ce..2b4e778 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -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;
};
/*
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