diff options
| author |   Andy Grover <andy.grover@oracle.com> | 2009-10-30 08:54:53 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-10-30 15:06:37 -0700 |
| commit | 244546f0d3101c5441f5b14cfe8a79d62679eaea (patch) | |
| tree | 52ba3f802e695e6b052aeb3c38ae76fb5f5f0be6 /include/linux/rds.h | |
| parent | bond: Get the rtnl_link_ops support correct (diff) | |
| download | linux-dev-244546f0d3101c5441f5b14cfe8a79d62679eaea.tar.xz linux-dev-244546f0d3101c5441f5b14cfe8a79d62679eaea.zip | |
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/linux/rds.h')
| -rw-r--r-- | include/linux/rds.h | 8 |
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; |