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

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 16 insertions, 28 deletions

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 7b637c7..c3ca191 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -134,11 +134,9 @@ static void put_rndis_request(struct rndis_device *dev,
 	kfree(req);
 }
 
-static void dump_rndis_message(struct hv_device *hv_dev,
+static void dump_rndis_message(struct net_device *netdev,
 			       const struct rndis_message *rndis_msg)
 {
-	struct net_device *netdev = hv_get_drvdata(hv_dev);
-
 	switch (rndis_msg->ndis_msg_type) {
 	case RNDIS_MSG_PACKET:
 		netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, "
@@ -217,7 +215,6 @@ static int rndis_filter_send_request(struct rndis_device *dev,
 	struct hv_netvsc_packet *packet;
 	struct hv_page_buffer page_buf[2];
 	struct hv_page_buffer *pb = page_buf;
-	struct net_device_context *net_device_ctx = netdev_priv(dev->ndev);
 	int ret;
 
 	/* Setup the packet to send it */
@@ -245,7 +242,7 @@ static int rndis_filter_send_request(struct rndis_device *dev,
 	}
 
 	rcu_read_lock_bh();
-	ret = netvsc_send(net_device_ctx, packet, NULL, pb, NULL);
+	ret = netvsc_send(dev->ndev, packet, NULL, pb, NULL);
 	rcu_read_unlock_bh();
 
 	return ret;
@@ -354,6 +351,7 @@ static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type)
 }
 
 static int rndis_filter_receive_data(struct net_device *ndev,
+				     struct netvsc_device *nvdev,
 				     struct rndis_device *dev,
 				     struct rndis_message *msg,
 				     struct vmbus_channel *channel,
@@ -390,14 +388,14 @@ static int rndis_filter_receive_data(struct net_device *ndev,
 	 */
 	data = (void *)((unsigned long)data + data_offset);
 	csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO);
-	return netvsc_recv_callback(ndev, channel,
+
+	return netvsc_recv_callback(ndev, nvdev, channel,
 				    data, rndis_pkt->data_len,
 				    csum_info, vlan);
 }
 
 int rndis_filter_receive(struct net_device *ndev,
 			 struct netvsc_device *net_dev,
-			 struct hv_device *dev,
 			 struct vmbus_channel *channel,
 			 void *data, u32 buflen)
 {
@@ -419,11 +417,12 @@ int rndis_filter_receive(struct net_device *ndev,
 	}
 
 	if (netif_msg_rx_status(net_device_ctx))
-		dump_rndis_message(dev, rndis_msg);
+		dump_rndis_message(ndev, rndis_msg);
 
 	switch (rndis_msg->ndis_msg_type) {
 	case RNDIS_MSG_PACKET:
-		return rndis_filter_receive_data(ndev, rndis_dev, rndis_msg,
+		return rndis_filter_receive_data(ndev, net_dev,
+						 rndis_dev, rndis_msg,
 						 channel, data, buflen);
 	case RNDIS_MSG_INIT_C:
 	case RNDIS_MSG_QUERY_C:
@@ -434,7 +433,7 @@ int rndis_filter_receive(struct net_device *ndev,
 
 	case RNDIS_MSG_INDICATE:
 		/* notification msgs */
-		netvsc_linkstatus_callback(dev, rndis_msg);
+		netvsc_linkstatus_callback(ndev, rndis_msg);
 		break;
 	default:
 		netdev_err(ndev,
@@ -1040,8 +1039,8 @@ static void netvsc_sc_open(struct vmbus_channel *new_sc)
 	/* Set the channel before opening.*/
 	nvchan->channel = new_sc;
 
-	ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE,
-			 nvscdev->ring_size * PAGE_SIZE, NULL, 0,
+	ret = vmbus_open(new_sc, netvsc_ring_bytes,
+			 netvsc_ring_bytes, NULL, 0,
 			 netvsc_channel_cb, nvchan);
 	if (ret == 0)
 		napi_enable(&nvchan->napi);
@@ -1222,7 +1221,6 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
 	struct ndis_recv_scale_cap rsscap;
 	u32 rsscap_size = sizeof(struct ndis_recv_scale_cap);
 	u32 mtu, size;
-	const struct cpumask *node_cpu_mask;
 	u32 num_possible_rss_qs;
 	int i, ret;
 
@@ -1291,14 +1289,8 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
 	if (ret || rsscap.num_recv_que < 2)
 		goto out;
 
-	/*
-	 * We will limit the VRSS channels to the number CPUs in the NUMA node
-	 * the primary channel is currently bound to.
-	 *
-	 * This also guarantees that num_possible_rss_qs <= num_online_cpus
-	 */
-	node_cpu_mask = cpumask_of_node(cpu_to_node(dev->channel->target_cpu));
-	num_possible_rss_qs = min_t(u32, cpumask_weight(node_cpu_mask),
+	/* This guarantees that num_possible_rss_qs <= num_online_cpus */
+	num_possible_rss_qs = min_t(u32, num_online_cpus(),
 				    rsscap.num_recv_que);
 
 	net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, num_possible_rss_qs);
@@ -1362,9 +1354,6 @@ int rndis_filter_open(struct netvsc_device *nvdev)
 	if (!nvdev)
 		return -EINVAL;
 
-	if (atomic_inc_return(&nvdev->open_cnt) != 1)
-		return 0;
-
 	return rndis_filter_open_device(nvdev->extension);
 }
 
@@ -1373,13 +1362,12 @@ int rndis_filter_close(struct netvsc_device *nvdev)
 	if (!nvdev)
 		return -EINVAL;
 
-	if (atomic_dec_return(&nvdev->open_cnt) != 0)
-		return 0;
-
 	return rndis_filter_close_device(nvdev->extension);
 }
 
 bool rndis_filter_opened(const struct netvsc_device *nvdev)
 {
-	return atomic_read(&nvdev->open_cnt) > 0;
+	const struct rndis_device *dev = nvdev->extension;
+
+	return dev->state == RNDIS_DEV_DATAINITIALIZED;
 }