Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband updates from Roland Dreier:
 "First batch of InfiniBand/RDMA changes for the 3.7 merge window:
   - mlx4 IB support for SR-IOV
   - A couple of SRP initiator fixes
   - Batch of nes hardware driver fixes
   - Fix for long-standing use-after-free crash in IPoIB
   - Other miscellaneous fixes"

This merge also removes a new use of __cancel_delayed_work(), and
replaces it with the regular cancel_delayed_work() that is now irq-safe
thanks to the workqueue updates.

That said, I suspect the sequence in question should probably use
"mod_delayed_work()".  I just did the minimal "don't use deprecated
functions" fixup, though.

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (45 commits)
  IB/qib: Fix local access validation for user MRs
  mlx4_core: Disable SENSE_PORT for multifunction devices
  mlx4_core: Clean up enabling of SENSE_PORT for older (ConnectX-1/-2) HCAs
  mlx4_core: Stash PCI ID driver_data in mlx4_priv structure
  IB/srp: Avoid having aborted requests hang
  IB/srp: Fix use-after-free in srp_reset_req()
  IB/qib: Add a qib driver version
  RDMA/nes: Fix compilation error when nes_debug is enabled
  RDMA/nes: Print hardware resource type
  RDMA/nes: Fix for crash when TX checksum offload is off
  RDMA/nes: Cosmetic changes
  RDMA/nes: Fix for incorrect MSS when TSO is on
  RDMA/nes: Fix incorrect resolving of the loopback MAC address
  mlx4_core: Fix crash on uninitialized priv->cmd.slave_sem
  mlx4_core: Trivial cleanups to driver log messages
  mlx4_core: Trivial readability fix: "0X30" -> "0x30"
  IB/mlx4: Create paravirt contexts for VFs when master IB driver initializes
  mlx4: Modify proxy/tunnel QP mechanism so that guests do no calculations
  mlx4: Paravirtualize Node Guids for slaves
  mlx4: Activate SR-IOV mode for IB
  ...

6 files changed, 48 insertions, 61 deletions

diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
index c438e4691b3c..0da62b904d00 100644
--- a/drivers/infiniband/hw/nes/nes.h
+++ b/drivers/infiniband/hw/nes/nes.h
@@ -399,11 +399,20 @@ static inline void nes_write8(void __iomem *addr, u8 val)
 	writeb(val, addr);
 }
 
-
+enum nes_resource {
+	NES_RESOURCE_MW = 1,
+	NES_RESOURCE_FAST_MR,
+	NES_RESOURCE_PHYS_MR,
+	NES_RESOURCE_USER_MR,
+	NES_RESOURCE_PD,
+	NES_RESOURCE_QP,
+	NES_RESOURCE_CQ,
+	NES_RESOURCE_ARP
+};
 
 static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
 		unsigned long *resource_array, u32 max_resources,
-		u32 *req_resource_num, u32 *next)
+		u32 *req_resource_num, u32 *next, enum nes_resource resource_type)
 {
 	unsigned long flags;
 	u32 resource_num;
@@ -414,7 +423,7 @@ static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
 	if (resource_num >= max_resources) {
 		resource_num = find_first_zero_bit(resource_array, max_resources);
 		if (resource_num >= max_resources) {
-			printk(KERN_ERR PFX "%s: No available resourcess.\n", __func__);
+			printk(KERN_ERR PFX "%s: No available resources [type=%u].\n", __func__, resource_type);
 			spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
 			return -EMFILE;
 		}
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 020e95c4c4b9..cfaacaf6bf5f 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -430,6 +430,8 @@ static void form_cm_frame(struct sk_buff *skb,
 	buf += sizeof(*tcph);
 
 	skb->ip_summed = CHECKSUM_PARTIAL;
+	if (!(cm_node->netdev->features & NETIF_F_IP_CSUM))
+		skb->ip_summed = CHECKSUM_NONE;
 	skb->protocol = htons(0x800);
 	skb->data_len = 0;
 	skb->mac_len = ETH_HLEN;
@@ -1356,7 +1358,7 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 	else
 		netdev = nesvnic->netdev;
 
-	neigh = dst_neigh_lookup(&rt->dst, &dst_ip);
+	neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev);
 
 	rcu_read_lock();
 	if (neigh) {
@@ -1465,12 +1467,8 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
 	cm_node->loopbackpartner = NULL;
 
 	/* get the mac addr for the remote node */
-	if (ipv4_is_loopback(htonl(cm_node->rem_addr))) {
-		arpindex = nes_arp_table(nesdev, ntohl(nesvnic->local_ipaddr), NULL, NES_ARP_RESOLVE);
-	} else {
-		oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE);
-		arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex);
-	}
+	oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE);
+	arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex);
 	if (arpindex < 0) {
 		kfree(cm_node);
 		return NULL;
@@ -3153,11 +3151,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	nesqp->nesqp_context->tcpPorts[1] =
 		cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
 
-	if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
-		nesqp->nesqp_context->ip0 =
-			cpu_to_le32(ntohl(nesvnic->local_ipaddr));
-	else
-		nesqp->nesqp_context->ip0 =
+	nesqp->nesqp_context->ip0 =
 			cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
 
 	nesqp->nesqp_context->misc2 |= cpu_to_le32(
@@ -3182,10 +3176,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	memset(&nes_quad, 0, sizeof(nes_quad));
 	nes_quad.DstIpAdrIndex =
 		cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
-	if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
-		nes_quad.SrcIpadr = nesvnic->local_ipaddr;
-	else
-		nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
+	nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
 	nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port;
 	nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port;
 
@@ -3538,11 +3529,7 @@ static void cm_event_connected(struct nes_cm_event *event)
 		cpu_to_le16(ntohs(cm_id->local_addr.sin_port));
 	nesqp->nesqp_context->tcpPorts[1] =
 		cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
-	if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
-		nesqp->nesqp_context->ip0 =
-			cpu_to_le32(ntohl(nesvnic->local_ipaddr));
-	else
-		nesqp->nesqp_context->ip0 =
+	nesqp->nesqp_context->ip0 =
 			cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
 
 	nesqp->nesqp_context->misc2 |= cpu_to_le32(
@@ -3571,10 +3558,7 @@ static void cm_event_connected(struct nes_cm_event *event)
 
 	nes_quad.DstIpAdrIndex =
 		cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
-	if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
-		nes_quad.SrcIpadr = nesvnic->local_ipaddr;
-	else
-		nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
+	nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
 	nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port;
 	nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port;
 
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index 9e0895b45eb8..fe7965ee4096 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -3575,10 +3575,10 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
 	tcp_state = (aeq_info & NES_AEQE_TCP_STATE_MASK) >> NES_AEQE_TCP_STATE_SHIFT;
 	iwarp_state = (aeq_info & NES_AEQE_IWARP_STATE_MASK) >> NES_AEQE_IWARP_STATE_SHIFT;
 	nes_debug(NES_DBG_AEQ, "aeid = 0x%04X, qp-cq id = %d, aeqe = %p,"
-			" Tcp state = %s, iWARP state = %s\n",
+			" Tcp state = %d, iWARP state = %d\n",
 			async_event_id,
 			le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]), aeqe,
-			nes_tcp_state_str[tcp_state], nes_iwarp_state_str[iwarp_state]);
+			tcp_state, iwarp_state);
 
 	aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
 	if (aeq_info & NES_AEQE_QP) {
diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index e43f6e41a6bd..0564be757d82 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -384,24 +384,20 @@ static int nes_nic_send(struct sk_buff *skb, struct net_device *netdev)
 	/* bump past the vlan tag */
 	wqe_fragment_length++;
 	/*	wqe_fragment_address = (u64 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX]; */
+	wqe_misc |= NES_NIC_SQ_WQE_COMPLETION;
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		tcph = tcp_hdr(skb);
-		if (1) {
-			if (skb_is_gso(skb)) {
-				/* nes_debug(NES_DBG_NIC_TX, "%s: TSO request... seg size = %u\n",
-						netdev->name, skb_is_gso(skb)); */
-				wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE |
-						NES_NIC_SQ_WQE_COMPLETION | (u16)skb_is_gso(skb);
-				set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
-						((u32)tcph->doff) |
-						(((u32)(((unsigned char *)tcph) - skb->data)) << 4));
-			} else {
-				wqe_misc |= NES_NIC_SQ_WQE_COMPLETION;
-			}
+		if (skb_is_gso(skb)) {
+			tcph = tcp_hdr(skb);
+			/* nes_debug(NES_DBG_NIC_TX, "%s: TSO request... is_gso = %u seg size = %u\n",
+					netdev->name, skb_is_gso(skb), skb_shinfo(skb)->gso_size); */
+			wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE | (u16)skb_shinfo(skb)->gso_size;
+			set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
+					((u32)tcph->doff) |
+					(((u32)(((unsigned char *)tcph) - skb->data)) << 4));
 		}
 	} else {	/* CHECKSUM_HW */
-		wqe_misc |= NES_NIC_SQ_WQE_DISABLE_CHKSUM | NES_NIC_SQ_WQE_COMPLETION;
+		wqe_misc |= NES_NIC_SQ_WQE_DISABLE_CHKSUM;
 	}
 
 	set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_TOTAL_LENGTH_IDX,
@@ -596,10 +592,10 @@ tso_sq_no_longer_full:
 					nes_debug(NES_DBG_NIC_TX, "ERROR: SKB header too big, headlen=%u, FIRST_FRAG_SIZE=%u\n",
 							original_first_length, NES_FIRST_FRAG_SIZE);
 					nes_debug(NES_DBG_NIC_TX, "%s Request to tx NIC packet length %u, headlen %u,"
-							" (%u frags), tso_size=%u\n",
+							" (%u frags), is_gso = %u tso_size=%u\n",
 							netdev->name,
 							skb->len, skb_headlen(skb),
-							skb_shinfo(skb)->nr_frags, skb_is_gso(skb));
+							skb_shinfo(skb)->nr_frags, skb_is_gso(skb), skb_shinfo(skb)->gso_size);
 				}
 				memcpy(&nesnic->first_frag_vbase[nesnic->sq_head].buffer,
 						skb->data, min(((unsigned int)NES_FIRST_FRAG_SIZE),
@@ -651,8 +647,8 @@ tso_sq_no_longer_full:
 				} else {
 					nesnic->tx_skb[nesnic->sq_head] = NULL;
 				}
-				wqe_misc |= NES_NIC_SQ_WQE_COMPLETION | (u16)skb_is_gso(skb);
-				if ((tso_wqe_length + original_first_length) > skb_is_gso(skb)) {
+				wqe_misc |= NES_NIC_SQ_WQE_COMPLETION | (u16)skb_shinfo(skb)->gso_size;
+				if ((tso_wqe_length + original_first_length) > skb_shinfo(skb)->gso_size) {
 					wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE;
 				} else {
 					iph->tot_len = htons(tso_wqe_length + original_first_length - nhoffset);
@@ -1678,12 +1674,10 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev,
 	netdev->hard_header_len = ETH_HLEN;
 	netdev->addr_len = ETH_ALEN;
 	netdev->type = ARPHRD_ETHER;
-	netdev->features = NETIF_F_HIGHDMA;
 	netdev->netdev_ops = &nes_netdev_ops;
 	netdev->ethtool_ops = &nes_ethtool_ops;
 	netif_napi_add(netdev, &nesvnic->napi, nes_netdev_poll, 128);
 	nes_debug(NES_DBG_INIT, "Enabling VLAN Insert/Delete.\n");
-	netdev->features |= NETIF_F_HW_VLAN_TX;
 
 	/* Fill in the port structure */
 	nesvnic->netdev = netdev;
@@ -1710,11 +1704,11 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev,
 	netdev->dev_addr[5] = (u8)u64temp;
 	memcpy(netdev->perm_addr, netdev->dev_addr, 6);
 
-	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_IP_CSUM |
-			      NETIF_F_HW_VLAN_RX;
+	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_RX;
 	if ((nesvnic->logical_port < 2) || (nesdev->nesadapter->hw_rev != NE020_REV))
 		netdev->hw_features |= NETIF_F_TSO;
-	netdev->features |= netdev->hw_features;
+
+	netdev->features = netdev->hw_features | NETIF_F_HIGHDMA | NETIF_F_HW_VLAN_TX;
 	netdev->hw_features |= NETIF_F_LRO;
 
 	nes_debug(NES_DBG_INIT, "nesvnic = %p, reported features = 0x%lX, QPid = %d,"
diff --git a/drivers/infiniband/hw/nes/nes_utils.c b/drivers/infiniband/hw/nes/nes_utils.c
index e98f4fc0b768..2042c0f29759 100644
--- a/drivers/infiniband/hw/nes/nes_utils.c
+++ b/drivers/infiniband/hw/nes/nes_utils.c
@@ -699,7 +699,7 @@ int nes_arp_table(struct nes_device *nesdev, u32 ip_addr, u8 *mac_addr, u32 acti
 
 		arp_index = 0;
 		err = nes_alloc_resource(nesadapter, nesadapter->allocated_arps,
-				nesadapter->arp_table_size, (u32 *)&arp_index, &nesadapter->next_arp_index);
+				nesadapter->arp_table_size, (u32 *)&arp_index, &nesadapter->next_arp_index, NES_RESOURCE_ARP);
 		if (err) {
 			nes_debug(NES_DBG_NETDEV, "nes_alloc_resource returned error = %u\n", err);
 			return err;
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 8b8812de4b5c..1dadcf388c02 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -80,7 +80,7 @@ static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
 	next_stag_index %= nesadapter->max_mr;
 
 	ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
-			nesadapter->max_mr, &stag_index, &next_stag_index);
+			nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
 	if (ret) {
 		return ERR_PTR(ret);
 	}
@@ -404,7 +404,7 @@ static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list
 
 	err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
 				 nesadapter->max_mr, &stag_index,
-				 &next_stag_index);
+				 &next_stag_index, NES_RESOURCE_FAST_MR);
 	if (err)
 		return ERR_PTR(err);
 
@@ -780,7 +780,7 @@ static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 			netdev_refcnt_read(nesvnic->netdev));
 
 	err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
-			nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
+			nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
 	if (err) {
 		return ERR_PTR(err);
 	}
@@ -1157,7 +1157,7 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
 			nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
 
 			ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
-					nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
+					nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
 			if (ret) {
 				return ERR_PTR(ret);
 			}
@@ -1546,7 +1546,7 @@ static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
 		return ERR_PTR(-EINVAL);
 
 	err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
-			nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
+			nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
 	if (err) {
 		return ERR_PTR(err);
 	}
@@ -2129,7 +2129,7 @@ static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
 		return ERR_PTR(-EINVAL);
 
 	err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
-			&stag_index, &next_stag_index);
+			&stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
 	if (err) {
 		return ERR_PTR(err);
 	}
@@ -2360,7 +2360,7 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 			next_stag_index %= nesadapter->max_mr;
 
 			err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
-					nesadapter->max_mr, &stag_index, &next_stag_index);
+					nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
 			if (err) {
 				ib_umem_release(region);
 				return ERR_PTR(err);