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-rw-r--r--drivers/infiniband/core/uverbs.h1
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c44
-rw-r--r--drivers/infiniband/core/uverbs_main.c1
-rw-r--r--include/rdma/ib_user_verbs.h15
4 files changed, 61 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 89c798e..3372d67 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -195,6 +195,7 @@ IB_UVERBS_DECLARE_CMD(attach_mcast);
IB_UVERBS_DECLARE_CMD(detach_mcast);
IB_UVERBS_DECLARE_CMD(create_srq);
IB_UVERBS_DECLARE_CMD(modify_srq);
+IB_UVERBS_DECLARE_CMD(query_srq);
IB_UVERBS_DECLARE_CMD(destroy_srq);
#endif /* UVERBS_H */
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 4cbef8c..38a66fb 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2,6 +2,7 @@
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
* Copyright (c) 2005 PathScale, Inc. All rights reserved.
+ * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -1923,6 +1924,49 @@ out:
return ret ? ret : in_len;
}
+ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
+ const char __user *buf,
+ int in_len, int out_len)
+{
+ struct ib_uverbs_query_srq cmd;
+ struct ib_uverbs_query_srq_resp resp;
+ struct ib_srq_attr attr;
+ struct ib_srq *srq;
+ int ret;
+
+ if (out_len < sizeof resp)
+ return -ENOSPC;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ mutex_lock(&ib_uverbs_idr_mutex);
+
+ srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
+ if (srq && srq->uobject->context == file->ucontext)
+ ret = ib_query_srq(srq, &attr);
+ else
+ ret = -EINVAL;
+
+ mutex_unlock(&ib_uverbs_idr_mutex);
+
+ if (ret)
+ goto out;
+
+ memset(&resp, 0, sizeof resp);
+
+ resp.max_wr = attr.max_wr;
+ resp.max_sge = attr.max_sge;
+ resp.srq_limit = attr.srq_limit;
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ return ret ? ret : in_len;
+}
+
ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 91e4750..ff092a0 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -108,6 +108,7 @@ static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file,
[IB_USER_VERBS_CMD_DETACH_MCAST] = ib_uverbs_detach_mcast,
[IB_USER_VERBS_CMD_CREATE_SRQ] = ib_uverbs_create_srq,
[IB_USER_VERBS_CMD_MODIFY_SRQ] = ib_uverbs_modify_srq,
+ [IB_USER_VERBS_CMD_QUERY_SRQ] = ib_uverbs_query_srq,
[IB_USER_VERBS_CMD_DESTROY_SRQ] = ib_uverbs_destroy_srq,
};
diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h
index 58662c3..0edd3a6 100644
--- a/include/rdma/ib_user_verbs.h
+++ b/include/rdma/ib_user_verbs.h
@@ -2,6 +2,7 @@
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
* Copyright (c) 2005 PathScale, Inc. All rights reserved.
+ * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -613,6 +614,20 @@ struct ib_uverbs_modify_srq {
__u64 driver_data[0];
};
+struct ib_uverbs_query_srq {
+ __u64 response;
+ __u32 srq_handle;
+ __u32 reserved;
+ __u64 driver_data[0];
+};
+
+struct ib_uverbs_query_srq_resp {
+ __u32 max_wr;
+ __u32 max_sge;
+ __u32 srq_limit;
+ __u32 reserved;
+};
+
struct ib_uverbs_destroy_srq {
__u64 response;
__u32 srq_handle;
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