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path: root/net/sunrpc/xprtrdma/svc_rdma.c
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Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma.c')
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma.c96
1 files changed, 66 insertions, 30 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
index 88c0ca20bb1..c1b6270262c 100644
--- a/net/sunrpc/xprtrdma/svc_rdma.c
+++ b/net/sunrpc/xprtrdma/svc_rdma.c
@@ -40,11 +40,14 @@
*/
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/sysctl.h>
+#include <linux/workqueue.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/svc_rdma.h>
+#include "xprt_rdma.h"
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
@@ -69,14 +72,20 @@ atomic_t rdma_stat_rq_prod;
atomic_t rdma_stat_sq_poll;
atomic_t rdma_stat_sq_prod;
+/* Temporary NFS request map and context caches */
+struct kmem_cache *svc_rdma_map_cachep;
+struct kmem_cache *svc_rdma_ctxt_cachep;
+
+struct workqueue_struct *svc_rdma_wq;
+
/*
* This function implements reading and resetting an atomic_t stat
* variable through read/write to a proc file. Any write to the file
* resets the associated statistic to zero. Any read returns it's
* current value.
*/
-static int read_reset_stat(ctl_table *table, int write,
- struct file *filp, void __user *buffer, size_t *lenp,
+static int read_reset_stat(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
loff_t *ppos)
{
atomic_t *stat = (atomic_t *)table->data;
@@ -110,14 +119,13 @@ static int read_reset_stat(ctl_table *table, int write,
}
static struct ctl_table_header *svcrdma_table_header;
-static ctl_table svcrdma_parm_table[] = {
+static struct ctl_table svcrdma_parm_table[] = {
{
.procname = "max_requests",
.data = &svcrdma_max_requests,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .strategy = &sysctl_intvec,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_requests,
.extra2 = &max_max_requests
},
@@ -126,8 +134,7 @@ static ctl_table svcrdma_parm_table[] = {
.data = &svcrdma_max_req_size,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .strategy = &sysctl_intvec,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_inline,
.extra2 = &max_max_inline
},
@@ -136,8 +143,7 @@ static ctl_table svcrdma_parm_table[] = {
.data = &svcrdma_ord,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .strategy = &sysctl_intvec,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = &min_ord,
.extra2 = &max_ord,
},
@@ -147,100 +153,96 @@ static ctl_table svcrdma_parm_table[] = {
.data = &rdma_stat_read,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_recv",
.data = &rdma_stat_recv,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_write",
.data = &rdma_stat_write,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_starve",
.data = &rdma_stat_sq_starve,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_starve",
.data = &rdma_stat_rq_starve,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_poll",
.data = &rdma_stat_rq_poll,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_prod",
.data = &rdma_stat_rq_prod,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_poll",
.data = &rdma_stat_sq_poll,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
+ .proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_prod",
.data = &rdma_stat_sq_prod,
.maxlen = sizeof(atomic_t),
.mode = 0644,
- .proc_handler = &read_reset_stat,
- },
- {
- .ctl_name = 0,
+ .proc_handler = read_reset_stat,
},
+ { },
};
-static ctl_table svcrdma_table[] = {
+static struct ctl_table svcrdma_table[] = {
{
.procname = "svc_rdma",
.mode = 0555,
.child = svcrdma_parm_table
},
- {
- .ctl_name = 0,
- },
+ { },
};
-static ctl_table svcrdma_root_table[] = {
+static struct ctl_table svcrdma_root_table[] = {
{
- .ctl_name = CTL_SUNRPC,
.procname = "sunrpc",
.mode = 0555,
.child = svcrdma_table
},
- {
- .ctl_name = 0,
- },
+ { },
};
void svc_rdma_cleanup(void)
{
dprintk("SVCRDMA Module Removed, deregister RPC RDMA transport\n");
+ destroy_workqueue(svc_rdma_wq);
if (svcrdma_table_header) {
unregister_sysctl_table(svcrdma_table_header);
svcrdma_table_header = NULL;
}
svc_unreg_xprt_class(&svc_rdma_class);
+ kmem_cache_destroy(svc_rdma_map_cachep);
+ kmem_cache_destroy(svc_rdma_ctxt_cachep);
}
int svc_rdma_init(void)
@@ -251,13 +253,47 @@ int svc_rdma_init(void)
dprintk("\tsq_depth : %d\n",
svcrdma_max_requests * RPCRDMA_SQ_DEPTH_MULT);
dprintk("\tmax_inline : %d\n", svcrdma_max_req_size);
+
+ svc_rdma_wq = alloc_workqueue("svc_rdma", 0, 0);
+ if (!svc_rdma_wq)
+ return -ENOMEM;
+
if (!svcrdma_table_header)
svcrdma_table_header =
register_sysctl_table(svcrdma_root_table);
+ /* Create the temporary map cache */
+ svc_rdma_map_cachep = kmem_cache_create("svc_rdma_map_cache",
+ sizeof(struct svc_rdma_req_map),
+ 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL);
+ if (!svc_rdma_map_cachep) {
+ printk(KERN_INFO "Could not allocate map cache.\n");
+ goto err0;
+ }
+
+ /* Create the temporary context cache */
+ svc_rdma_ctxt_cachep =
+ kmem_cache_create("svc_rdma_ctxt_cache",
+ sizeof(struct svc_rdma_op_ctxt),
+ 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL);
+ if (!svc_rdma_ctxt_cachep) {
+ printk(KERN_INFO "Could not allocate WR ctxt cache.\n");
+ goto err1;
+ }
+
/* Register RDMA with the SVC transport switch */
svc_reg_xprt_class(&svc_rdma_class);
return 0;
+ err1:
+ kmem_cache_destroy(svc_rdma_map_cachep);
+ err0:
+ unregister_sysctl_table(svcrdma_table_header);
+ destroy_workqueue(svc_rdma_wq);
+ return -ENOMEM;
}
MODULE_AUTHOR("Tom Tucker <tom@opengridcomputing.com>");
MODULE_DESCRIPTION("SVC RDMA Transport");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 17:04:26 +0000