RDS: Implement masked atomic operations

Add two CMSGs for masked versions of cswp and fadd. args
struct modified to use a union for different atomic op type's
arguments. Change IB to do masked atomic ops. Atomic op type
in rds_message similarly unionized.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/rds/send.c b/net/rds/send.c
index 81471b25373b..9b951a0ab6b7 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -843,6 +843,8 @@ static int rds_rm_size(struct msghdr *msg, int data_len)
 
                 case RDS_CMSG_ATOMIC_CSWP:
                 case RDS_CMSG_ATOMIC_FADD:
+                case RDS_CMSG_MASKED_ATOMIC_CSWP:
+                case RDS_CMSG_MASKED_ATOMIC_FADD:
                         cmsg_groups |= 1;
                         size += sizeof(struct scatterlist);
                         break;
@@ -894,6 +896,8 @@ static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
                         break;
                 case RDS_CMSG_ATOMIC_CSWP:
                 case RDS_CMSG_ATOMIC_FADD:
+                case RDS_CMSG_MASKED_ATOMIC_CSWP:
+                case RDS_CMSG_MASKED_ATOMIC_FADD:
                         ret = rds_cmsg_atomic(rs, rm, cmsg);
                         break;