From 244546f0d3101c5441f5b14cfe8a79d62679eaea Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Fri, 30 Oct 2009 08:54:53 +0000 Subject: 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 Signed-off-by: David S. Miller --- include/linux/rds.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/rds.h') 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; -- cgit v1.2.1