[PATCH for-next 12/13] RDMA/rxe: Extend rxe_net.c to support xrc qps

[Bob Pearson <rpearsonhpe@xxxxxxxxx>]

Extend code in rxe_net.c to support xrc qp types.

Signed-off-by: Bob Pearson <rpearsonhpe@xxxxxxxxx>
---
 drivers/infiniband/sw/rxe/rxe_net.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index d46190ad082f..d9bedd6fc497 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -92,7 +92,7 @@ static struct dst_entry *rxe_find_route(struct net_device *ndev,
 {
 	struct dst_entry *dst = NULL;
 
-	if (qp_type(qp) == IB_QPT_RC)
+	if (qp_type(qp) == IB_QPT_RC || qp_type(qp) == IB_QPT_XRC_INI)
 		dst = sk_dst_get(qp->sk->sk);
 
 	if (!dst || !dst_check(dst, qp->dst_cookie)) {
@@ -120,7 +120,8 @@ static struct dst_entry *rxe_find_route(struct net_device *ndev,
 #endif
 		}
 
-		if (dst && (qp_type(qp) == IB_QPT_RC)) {
+		if (dst && (qp_type(qp) == IB_QPT_RC ||
+			    qp_type(qp) == IB_QPT_XRC_INI)) {
 			dst_hold(dst);
 			sk_dst_set(qp->sk->sk, dst);
 		}
@@ -386,14 +387,23 @@ static int rxe_send(struct sk_buff *skb, struct rxe_pkt_info *pkt)
  */
 static int rxe_loopback(struct sk_buff *skb, struct rxe_pkt_info *pkt)
 {
-	memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
+	struct rxe_pkt_info *new_pkt = SKB_TO_PKT(skb);
+
+	memset(new_pkt, 0, sizeof(*new_pkt));
+
+	/* match rxe_udp_encap_recv */
+	new_pkt->rxe = pkt->rxe;
+	new_pkt->port_num = 1;
+	new_pkt->hdr = pkt->hdr;
+	new_pkt->mask = RXE_GRH_MASK;
+	new_pkt->paylen = pkt->paylen;
 
 	if (skb->protocol == htons(ETH_P_IP))
 		skb_pull(skb, sizeof(struct iphdr));
 	else
 		skb_pull(skb, sizeof(struct ipv6hdr));
 
-	if (WARN_ON(!ib_device_try_get(&pkt->rxe->ib_dev))) {
+	if (WARN_ON(!ib_device_try_get(&new_pkt->rxe->ib_dev))) {
 		kfree_skb(skb);
 		return -EIO;
 	}
@@ -412,7 +422,6 @@ int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
 
 	if ((is_request && (qp->req.state != QP_STATE_READY)) ||
 	    (!is_request && (qp->resp.state != QP_STATE_READY))) {
-		pr_info("Packet dropped. QP is not in ready state\n");
 		goto drop;
 	}
 
@@ -427,8 +436,8 @@ int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
 		return err;
 	}
 
-	if ((qp_type(qp) != IB_QPT_RC) &&
-	    (pkt->mask & RXE_LAST_MASK)) {
+	if ((pkt->mask & RXE_REQ_MASK) && (pkt->mask & RXE_LAST_MASK) &&
+	    (qp_type(qp) != IB_QPT_RC && qp_type(qp) != IB_QPT_XRC_INI)) {
 		pkt->wqe->state = wqe_state_done;
 		rxe_run_task(&qp->comp.task, 1);
 	}
-- 
2.34.1