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-rw-r--r--drivers/net/cxgb3/adapter.h2
-rw-r--r--drivers/net/cxgb3/cxgb3_main.c78
-rw-r--r--drivers/net/cxgb3/cxgb3_offload.c27
-rw-r--r--drivers/net/cxgb3/cxgb3_offload.h3
4 files changed, 103 insertions, 7 deletions
diff --git a/drivers/net/cxgb3/adapter.h b/drivers/net/cxgb3/adapter.h
index e48e508b9632..1694fad38720 100644
--- a/drivers/net/cxgb3/adapter.h
+++ b/drivers/net/cxgb3/adapter.h
@@ -253,6 +253,8 @@ struct adapter {
 	struct mutex mdio_lock;
 	spinlock_t stats_lock;
 	spinlock_t work_lock;
+
+	struct sk_buff *nofail_skb;
 };
 
 static inline u32 t3_read_reg(struct adapter *adapter, u32 reg_addr)
diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index aef3ab21f5f7..538dda4422dc 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -433,40 +433,78 @@ static int init_tp_parity(struct adapter *adap)
 	for (i = 0; i < 16; i++) {
 		struct cpl_smt_write_req *req;
 
-		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL);
+		if (!skb)
+			skb = adap->nofail_skb;
+		if (!skb)
+			goto alloc_skb_fail;
+
 		req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
 		memset(req, 0, sizeof(*req));
 		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i));
 		req->iff = i;
 		t3_mgmt_tx(adap, skb);
+		if (skb == adap->nofail_skb) {
+			await_mgmt_replies(adap, cnt, i + 1);
+			adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+			if (!adap->nofail_skb)
+				goto alloc_skb_fail;
+		}
 	}
 
 	for (i = 0; i < 2048; i++) {
 		struct cpl_l2t_write_req *req;
 
-		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL);
+		if (!skb)
+			skb = adap->nofail_skb;
+		if (!skb)
+			goto alloc_skb_fail;
+
 		req = (struct cpl_l2t_write_req *)__skb_put(skb, sizeof(*req));
 		memset(req, 0, sizeof(*req));
 		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i));
 		req->params = htonl(V_L2T_W_IDX(i));
 		t3_mgmt_tx(adap, skb);
+		if (skb == adap->nofail_skb) {
+			await_mgmt_replies(adap, cnt, 16 + i + 1);
+			adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+			if (!adap->nofail_skb)
+				goto alloc_skb_fail;
+		}
 	}
 
 	for (i = 0; i < 2048; i++) {
 		struct cpl_rte_write_req *req;
 
-		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL);
+		if (!skb)
+			skb = adap->nofail_skb;
+		if (!skb)
+			goto alloc_skb_fail;
+
 		req = (struct cpl_rte_write_req *)__skb_put(skb, sizeof(*req));
 		memset(req, 0, sizeof(*req));
 		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i));
 		req->l2t_idx = htonl(V_L2T_W_IDX(i));
 		t3_mgmt_tx(adap, skb);
+		if (skb == adap->nofail_skb) {
+			await_mgmt_replies(adap, cnt, 16 + 2048 + i + 1);
+			adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+			if (!adap->nofail_skb)
+				goto alloc_skb_fail;
+		}
 	}
 
-	skb = alloc_skb(sizeof(*greq), GFP_KERNEL | __GFP_NOFAIL);
+	skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+	if (!skb)
+		skb = adap->nofail_skb;
+	if (!skb)
+		goto alloc_skb_fail;
+
 	greq = (struct cpl_set_tcb_field *)__skb_put(skb, sizeof(*greq));
 	memset(greq, 0, sizeof(*greq));
 	greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
@@ -475,8 +513,17 @@ static int init_tp_parity(struct adapter *adap)
 	t3_mgmt_tx(adap, skb);
 
 	i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
+	if (skb == adap->nofail_skb) {
+		i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
+		adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+	}
+
 	t3_tp_set_offload_mode(adap, 0);
 	return i;
+
+alloc_skb_fail:
+	t3_tp_set_offload_mode(adap, 0);
+	return -ENOMEM;
 }
 
 /**
@@ -871,7 +918,12 @@ static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo,
 	struct mngt_pktsched_wr *req;
 	int ret;
 
-	skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+	skb = alloc_skb(sizeof(*req), GFP_KERNEL);
+	if (!skb)
+		skb = adap->nofail_skb;
+	if (!skb)
+		return -ENOMEM;
+
 	req = (struct mngt_pktsched_wr *)skb_put(skb, sizeof(*req));
 	req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_MNGT));
 	req->mngt_opcode = FW_MNGTOPCODE_PKTSCHED_SET;
@@ -881,6 +933,12 @@ static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo,
 	req->max = hi;
 	req->binding = port;
 	ret = t3_mgmt_tx(adap, skb);
+	if (skb == adap->nofail_skb) {
+		adap->nofail_skb = alloc_skb(sizeof(struct cpl_set_tcb_field),
+					     GFP_KERNEL);
+		if (!adap->nofail_skb)
+			ret = -ENOMEM;
+	}
 
 	return ret;
 }
@@ -3020,6 +3078,14 @@ static int __devinit init_one(struct pci_dev *pdev,
 		goto out_disable_device;
 	}
 
+	adapter->nofail_skb =
+		alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_KERNEL);
+	if (!adapter->nofail_skb) {
+		dev_err(&pdev->dev, "cannot allocate nofail buffer\n");
+		err = -ENOMEM;
+		goto out_free_adapter;
+	}
+
 	adapter->regs = ioremap_nocache(mmio_start, mmio_len);
 	if (!adapter->regs) {
 		dev_err(&pdev->dev, "cannot map device registers\n");
@@ -3176,6 +3242,8 @@ static void __devexit remove_one(struct pci_dev *pdev)
 				free_netdev(adapter->port[i]);
 
 		iounmap(adapter->regs);
+		if (adapter->nofail_skb)
+			kfree_skb(adapter->nofail_skb);
 		kfree(adapter);
 		pci_release_regions(pdev);
 		pci_disable_device(pdev);
diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c
index 620d80be6aac..f9f54b57b28c 100644
--- a/drivers/net/cxgb3/cxgb3_offload.c
+++ b/drivers/net/cxgb3/cxgb3_offload.c
@@ -566,13 +566,31 @@ static void t3_process_tid_release_list(struct work_struct *work)
 		spin_unlock_bh(&td->tid_release_lock);
 
 		skb = alloc_skb(sizeof(struct cpl_tid_release),
-				GFP_KERNEL | __GFP_NOFAIL);
+				GFP_KERNEL);
+		if (!skb)
+			skb = td->nofail_skb;
+		if (!skb) {
+			spin_lock_bh(&td->tid_release_lock);
+			p->ctx = (void *)td->tid_release_list;
+			td->tid_release_list = (struct t3c_tid_entry *)p;
+			break;
+		}
 		mk_tid_release(skb, p - td->tid_maps.tid_tab);
 		cxgb3_ofld_send(tdev, skb);
 		p->ctx = NULL;
+		if (skb == td->nofail_skb)
+			td->nofail_skb =
+				alloc_skb(sizeof(struct cpl_tid_release),
+					GFP_KERNEL);
 		spin_lock_bh(&td->tid_release_lock);
 	}
+	td->release_list_incomplete = (td->tid_release_list == NULL) ? 0 : 1;
 	spin_unlock_bh(&td->tid_release_lock);
+
+	if (!td->nofail_skb)
+		td->nofail_skb =
+			alloc_skb(sizeof(struct cpl_tid_release),
+				GFP_KERNEL);
 }
 
 /* use ctx as a next pointer in the tid release list */
@@ -585,7 +603,7 @@ void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
 	p->ctx = (void *)td->tid_release_list;
 	p->client = NULL;
 	td->tid_release_list = p;
-	if (!p->ctx)
+	if (!p->ctx || td->release_list_incomplete)
 		schedule_work(&td->tid_release_task);
 	spin_unlock_bh(&td->tid_release_lock);
 }
@@ -1274,6 +1292,9 @@ int cxgb3_offload_activate(struct adapter *adapter)
 	if (list_empty(&adapter_list))
 		register_netevent_notifier(&nb);
 
+	t->nofail_skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_KERNEL);
+	t->release_list_incomplete = 0;
+
 	add_adapter(adapter);
 	return 0;
 
@@ -1298,6 +1319,8 @@ void cxgb3_offload_deactivate(struct adapter *adapter)
 	T3C_DATA(tdev) = NULL;
 	t3_free_l2t(L2DATA(tdev));
 	L2DATA(tdev) = NULL;
+	if (t->nofail_skb)
+		kfree_skb(t->nofail_skb);
 	kfree(t);
 }
 
diff --git a/drivers/net/cxgb3/cxgb3_offload.h b/drivers/net/cxgb3/cxgb3_offload.h
index a8e8e5fcdf84..55945f422aec 100644
--- a/drivers/net/cxgb3/cxgb3_offload.h
+++ b/drivers/net/cxgb3/cxgb3_offload.h
@@ -191,6 +191,9 @@ struct t3c_data {
 	struct t3c_tid_entry *tid_release_list;
 	spinlock_t tid_release_lock;
 	struct work_struct tid_release_task;
+
+	struct sk_buff *nofail_skb;
+	unsigned int release_list_incomplete;
 };
 
 /*
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-01 12:27:37 +0000