smc: work request (WR) base for use by LLC and CDC

The base containers for RDMA transport are work requests and completion
queue entries processed through Infiniband verbs:
* allocate and initialize these areas
* map these areas to DMA
* implement the basic communication consisting of work request posting
  and receival of completion queue events

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/net/smc/smc.h b/net/smc/smc.h
index 2bf504492133..209a0b5f59cb 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -12,6 +12,7 @@
 
 #include <linux/socket.h>
 #include <linux/types.h>
+#include <linux/compiler.h> /* __aligned */
 #include <net/sock.h>
 
 #include "smc_ib.h"
@@ -29,6 +30,10 @@ enum smc_state {		/* possible states of an SMC socket */
 
 struct smc_link_group;
 
+struct smc_wr_rx_hdr {  /* common prefix part of LLC and CDC to demultiplex */
+        u8                      type;
+} __aligned(1);
+
 struct smc_connection {
         struct rb_node          alert_node;
         struct smc_link_group   *lgr;           /* link group of connection */