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authorAndy Grover <andy.grover@oracle.com>2009-10-30 08:54:53 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-30 15:06:37 -0700
commit244546f0d3101c5441f5b14cfe8a79d62679eaea (patch)
tree52ba3f802e695e6b052aeb3c38ae76fb5f5f0be6 /include
parent6639104bd826e0b1388c69a6b7564fffc636c8a8 (diff)
RDS: Add GET_MR_FOR_DEST sockopt
RDS currently supports a GET_MR sockopt to establish a memory region (MR) for a chunk of memory. However, the fastreg method ties a MR to a particular destination. The GET_MR_FOR_DEST sockopt allows the remote machine to be specified, and thus support for fastreg (aka FRWRs). Note that this patch does *not* do all of this - it simply implements the new sockopt in terms of the old one, so applications can begin to use the new sockopt in preparation for cutover to FRWRs. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/rds.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/rds.h b/include/linux/rds.h
index 89d46e1afbb1..cab4994c2f63 100644
--- a/include/linux/rds.h
+++ b/include/linux/rds.h
@@ -56,6 +56,7 @@
/* deprecated: RDS_BARRIER 4 */
#define RDS_RECVERR 5
#define RDS_CONG_MONITOR 6
+#define RDS_GET_MR_FOR_DEST 7
/*
* Control message types for SOL_RDS.
@@ -224,6 +225,13 @@ struct rds_get_mr_args {
uint64_t flags;
};
+struct rds_get_mr_for_dest_args {
+ struct sockaddr_storage dest_addr;
+ struct rds_iovec vec;
+ u_int64_t cookie_addr;
+ uint64_t flags;
+};
+
struct rds_free_mr_args {
rds_rdma_cookie_t cookie;
u_int64_t flags;