Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Conflict resolution of af_smc.c from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/hfi1/chip.c

@@ -13232,7 +13232,7 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
 	int total_contexts;
 	int ret;
 	unsigned ngroups;
-	int qos_rmt_count;
+	int rmt_count;
 	int user_rmt_reduced;
 	u32 n_usr_ctxts;
 	u32 send_contexts = chip_send_contexts(dd);
@@ -13294,10 +13294,20 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
 		n_usr_ctxts = rcv_contexts - total_contexts;
 	}
 
-	/* each user context requires an entry in the RMT */
-	qos_rmt_count = qos_rmt_entries(dd, NULL, NULL);
-	if (qos_rmt_count + n_usr_ctxts > NUM_MAP_ENTRIES) {
-		user_rmt_reduced = NUM_MAP_ENTRIES - qos_rmt_count;
+	/*
+	 * The RMT entries are currently allocated as shown below:
+	 * 1. QOS (0 to 128 entries);
+	 * 2. FECN for PSM (num_user_contexts + num_vnic_contexts);
+	 * 3. VNIC (num_vnic_contexts).
+	 * It should be noted that PSM FECN oversubscribe num_vnic_contexts
+	 * entries of RMT because both VNIC and PSM could allocate any receive
+	 * context between dd->first_dyn_alloc_text and dd->num_rcv_contexts,
+	 * and PSM FECN must reserve an RMT entry for each possible PSM receive
+	 * context.
+	 */
+	rmt_count = qos_rmt_entries(dd, NULL, NULL) + (num_vnic_contexts * 2);
+	if (rmt_count + n_usr_ctxts > NUM_MAP_ENTRIES) {
+		user_rmt_reduced = NUM_MAP_ENTRIES - rmt_count;
 		dd_dev_err(dd,
 			   "RMT size is reducing the number of user receive contexts from %u to %d\n",
 			   n_usr_ctxts,
@@ -14285,9 +14295,11 @@ static void init_user_fecn_handling(struct hfi1_devdata *dd,
 	u64 reg;
 	int i, idx, regoff, regidx;
 	u8 offset;
+	u32 total_cnt;
 
 	/* there needs to be enough room in the map table */
-	if (rmt->used + dd->num_user_contexts >= NUM_MAP_ENTRIES) {
+	total_cnt = dd->num_rcv_contexts - dd->first_dyn_alloc_ctxt;
+	if (rmt->used + total_cnt >= NUM_MAP_ENTRIES) {
 		dd_dev_err(dd, "User FECN handling disabled - too many user contexts allocated\n");
 		return;
 	}
@@ -14341,7 +14353,7 @@ static void init_user_fecn_handling(struct hfi1_devdata *dd,
 	/* add rule 1 */
 	add_rsm_rule(dd, RSM_INS_FECN, &rrd);
 
-	rmt->used += dd->num_user_contexts;
+	rmt->used += total_cnt;
 }
 
 /* Initialize RSM for VNIC */

drivers/infiniband/hw/hfi1/qp.c

@@ -898,7 +898,9 @@ void notify_error_qp(struct rvt_qp *qp)
 		if (!list_empty(&priv->s_iowait.list) &&
 		    !(qp->s_flags & RVT_S_BUSY) &&
 		    !(priv->s_flags & RVT_S_BUSY)) {
-			qp->s_flags &= ~RVT_S_ANY_WAIT_IO;
+			qp->s_flags &= ~HFI1_S_ANY_WAIT_IO;
+			iowait_clear_flag(&priv->s_iowait, IOWAIT_PENDING_IB);
+			iowait_clear_flag(&priv->s_iowait, IOWAIT_PENDING_TID);
 			list_del_init(&priv->s_iowait.list);
 			priv->s_iowait.lock = NULL;
 			rvt_put_qp(qp);

drivers/infiniband/hw/hfi1/rc.c

@@ -3088,7 +3088,7 @@ send_last:
 			update_ack_queue(qp, next);
 		}
 		e = &qp->s_ack_queue[qp->r_head_ack_queue];
-		if (e->opcode == OP(RDMA_READ_REQUEST) && e->rdma_sge.mr) {
+		if (e->rdma_sge.mr) {
 			rvt_put_mr(e->rdma_sge.mr);
 			e->rdma_sge.mr = NULL;
 		}
@@ -3166,7 +3166,7 @@ send_last:
 			update_ack_queue(qp, next);
 		}
 		e = &qp->s_ack_queue[qp->r_head_ack_queue];
-		if (e->opcode == OP(RDMA_READ_REQUEST) && e->rdma_sge.mr) {
+		if (e->rdma_sge.mr) {
 			rvt_put_mr(e->rdma_sge.mr);
 			e->rdma_sge.mr = NULL;
 		}

drivers/infiniband/hw/hfi1/tid_rdma.c

@@ -5017,24 +5017,14 @@ int hfi1_make_tid_rdma_pkt(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
 	    make_tid_rdma_ack(qp, ohdr, ps))
 		return 1;
 
-	if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_SEND_OK)) {
-		if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND))
-			goto bail;
-		/* We are in the error state, flush the work request. */
-		if (qp->s_last == READ_ONCE(qp->s_head))
-			goto bail;
-		/* If DMAs are in progress, we can't flush immediately. */
-		if (iowait_sdma_pending(&priv->s_iowait)) {
-			qp->s_flags |= RVT_S_WAIT_DMA;
-			goto bail;
-		}
-		clear_ahg(qp);
-		wqe = rvt_get_swqe_ptr(qp, qp->s_last);
-		hfi1_trdma_send_complete(qp, wqe, qp->s_last != qp->s_acked ?
-					 IB_WC_SUCCESS : IB_WC_WR_FLUSH_ERR);
-		/* will get called again */
-		goto done_free_tx;
-	}
+	/*
+	 * Bail out if we can't send data.
+	 * Be reminded that this check must been done after the call to
+	 * make_tid_rdma_ack() because the responding QP could be in
+	 * RTR state where it can send TID RDMA ACK, not TID RDMA WRITE DATA.
+	 */
+	if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_SEND_OK))
+		goto bail;
 
 	if (priv->s_flags & RVT_S_WAIT_ACK)
 		goto bail;
@@ -5144,11 +5134,6 @@ int hfi1_make_tid_rdma_pkt(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
 	hfi1_make_ruc_header(qp, ohdr, (opcode << 24), bth1, bth2,
 			     middle, ps);
 	return 1;
-done_free_tx:
-	hfi1_put_txreq(ps->s_txreq);
-	ps->s_txreq = NULL;
-	return 1;
-
 bail:
 	hfi1_put_txreq(ps->s_txreq);
 bail_no_tx: