diff options
Diffstat (limited to 'drivers/infiniband/core/uverbs_cmd.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 4cbef8c06634..38a66fbef36d 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) |