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authorKa-Cheong Poon <ka-cheong.poon@oracle.com>2018-07-23 20:51:23 -0700
committerDavid S. Miller <davem@davemloft.net>2018-07-23 21:17:44 -0700
commitb7ff8b1036f0b0df1390ba6b5e9bc7ec458e857a (patch)
tree398bab1a171b7da3be14fe9f7f1d5936032b7f74 /net/rds/ib_rdma.c
parent1e2b44e78eead7bcadfbf96f70d95773191541c9 (diff)
downloadlinux-b7ff8b1036f0b0df1390ba6b5e9bc7ec458e857a.tar.bz2
rds: Extend RDS API for IPv6 support
There are many data structures (RDS socket options) used by RDS apps which use a 32 bit integer to store IP address. To support IPv6, struct in6_addr needs to be used. To ensure backward compatibility, a new data structure is introduced for each of those data structures which use a 32 bit integer to represent an IP address. And new socket options are introduced to use those new structures. This means that existing apps should work without a problem with the new RDS module. For apps which want to use IPv6, those new data structures and socket options can be used. IPv4 mapped address is used to represent IPv4 address in the new data structures. v4: Revert changes to SO_RDS_TRANSPORT Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/ib_rdma.c')
-rw-r--r--net/rds/ib_rdma.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 0ec9df043dd0..e3c8bbbdb43f 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. 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
@@ -180,6 +180,15 @@ void rds_ib_get_mr_info(struct rds_ib_device *rds_ibdev, struct rds_info_rdma_co
iinfo->rdma_mr_size = pool_1m->fmr_attr.max_pages;
}
+void rds6_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
+ struct rds6_info_rdma_connection *iinfo6)
+{
+ struct rds_ib_mr_pool *pool_1m = rds_ibdev->mr_1m_pool;
+
+ iinfo6->rdma_mr_max = pool_1m->max_items;
+ iinfo6->rdma_mr_size = pool_1m->fmr_attr.max_pages;
+}
+
struct rds_ib_mr *rds_ib_reuse_mr(struct rds_ib_mr_pool *pool)
{
struct rds_ib_mr *ibmr = NULL;