net/smc: Eliminate struct smc_ism_position

This struct is used in a single place only, and its usage generates
inefficient code. Time to clean up!

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-and-tested-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Wenjia Zhang < wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/smc/smc_ism.c

@@ -33,17 +33,6 @@ int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *smcd)
 					   vlan_id);
 }
 
-int smc_ism_write(struct smcd_dev *smcd, const struct smc_ism_position *pos,
-		  void *data, size_t len)
-{
-	int rc;
-
-	rc = smcd->ops->move_data(smcd, pos->token, pos->index, pos->signal,
-				  pos->offset, data, len);
-
-	return rc < 0 ? rc : 0;
-}
-
 void smc_ism_get_system_eid(u8 **eid)
 {
 	if (!smc_ism_v2_capable)

net/smc/smc_ism.h

@@ -28,13 +28,6 @@ struct smc_ism_vlanid {			/* VLAN id set on ISM device */
 	refcount_t refcnt;		/* Reference count */
 };
 
-struct smc_ism_position {	/* ISM device position to write to */
-	u64 token;		/* Token of DMB */
-	u32 offset;		/* Offset into DMBE */
-	u8 index;		/* Index of DMBE */
-	u8 signal;		/* Generate interrupt on owner side */
-};
-
 struct smcd_dev;
 
 int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev);
@@ -45,12 +38,21 @@ int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id);
 int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size,
 			 struct smc_buf_desc *dmb_desc);
 int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc);
-int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos,
-		  void *data, size_t len);
 int smc_ism_signal_shutdown(struct smc_link_group *lgr);
 void smc_ism_get_system_eid(u8 **eid);
 u16 smc_ism_get_chid(struct smcd_dev *dev);
 bool smc_ism_is_v2_capable(void);
 void smc_ism_init(void);
 int smcd_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb);
+
+static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok,
+				unsigned int idx, bool sf, unsigned int offset,
+				void *data, size_t len)
+{
+	int rc;
+
+	rc = smcd->ops->move_data(smcd, dmb_tok, idx, sf, offset, data, len);
+	return rc < 0 ? rc : 0;
+}
+
 #endif

net/smc/smc_tx.c

@@ -320,15 +320,11 @@ int smc_tx_sendpage(struct smc_sock *smc, struct page *page, int offset,
 int smcd_tx_ism_write(struct smc_connection *conn, void *data, size_t len,
 		      u32 offset, int signal)
 {
-	struct smc_ism_position pos;
 	int rc;
 
-	memset(&pos, 0, sizeof(pos));
-	pos.token = conn->peer_token;
-	pos.index = conn->peer_rmbe_idx;
-	pos.offset = conn->tx_off + offset;
-	pos.signal = signal;
-	rc = smc_ism_write(conn->lgr->smcd, &pos, data, len);
+	rc = smc_ism_write(conn->lgr->smcd, conn->peer_token,
+			   conn->peer_rmbe_idx, signal, conn->tx_off + offset,
+			   data, len);
 	if (rc)
 		conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
 	return rc;