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-rw-r--r--net/rds/rdma.c36
1 files changed, 30 insertions, 6 deletions
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 8dc83d2..4c64daa 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -317,6 +317,30 @@ int rds_get_mr(struct rds_sock *rs, char __user *optval, int optlen)
return __rds_rdma_map(rs, &args, NULL, NULL);
}
+int rds_get_mr_for_dest(struct rds_sock *rs, char __user *optval, int optlen)
+{
+ struct rds_get_mr_for_dest_args args;
+ struct rds_get_mr_args new_args;
+
+ if (optlen != sizeof(struct rds_get_mr_for_dest_args))
+ return -EINVAL;
+
+ if (copy_from_user(&args, (struct rds_get_mr_for_dest_args __user *)optval,
+ sizeof(struct rds_get_mr_for_dest_args)))
+ return -EFAULT;
+
+ /*
+ * Initially, just behave like get_mr().
+ * TODO: Implement get_mr as wrapper around this
+ * and deprecate it.
+ */
+ new_args.vec = args.vec;
+ new_args.cookie_addr = args.cookie_addr;
+ new_args.flags = args.flags;
+
+ return __rds_rdma_map(rs, &new_args, NULL, NULL);
+}
+
/*
* Free the MR indicated by the given R_Key
*/
@@ -607,8 +631,8 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
{
struct rds_rdma_op *op;
- if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_rdma_args))
- || rm->m_rdma_op != NULL)
+ if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_rdma_args)) ||
+ rm->m_rdma_op != NULL)
return -EINVAL;
op = rds_rdma_prepare(rs, CMSG_DATA(cmsg));
@@ -631,8 +655,8 @@ int rds_cmsg_rdma_dest(struct rds_sock *rs, struct rds_message *rm,
u32 r_key;
int err = 0;
- if (cmsg->cmsg_len < CMSG_LEN(sizeof(rds_rdma_cookie_t))
- || rm->m_rdma_cookie != 0)
+ if (cmsg->cmsg_len < CMSG_LEN(sizeof(rds_rdma_cookie_t)) ||
+ rm->m_rdma_cookie != 0)
return -EINVAL;
memcpy(&rm->m_rdma_cookie, CMSG_DATA(cmsg), sizeof(rm->m_rdma_cookie));
@@ -668,8 +692,8 @@ int rds_cmsg_rdma_dest(struct rds_sock *rs, struct rds_message *rm,
int rds_cmsg_rdma_map(struct rds_sock *rs, struct rds_message *rm,
struct cmsghdr *cmsg)
{
- if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_get_mr_args))
- || rm->m_rdma_cookie != 0)
+ if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_get_mr_args)) ||
+ rm->m_rdma_cookie != 0)
return -EINVAL;
return __rds_rdma_map(rs, CMSG_DATA(cmsg), &rm->m_rdma_cookie, &rm->m_rdma_mr);
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