Re: [PATCH v6 net-next] net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)
From: Stephen Hemminger <stephen@networkplumber.org>
Date: 2021-04-15 21:15:37
Also in:
linux-hyperv, lkml
On Wed, 14 Apr 2021 22:45:19 -0700 Dexuan Cui [off-list ref] wrote:
+static int mana_probe_port(struct mana_context *ac, int port_idx,
+ struct net_device **ndev_storage)
+{
+ struct gdma_context *gc = ac->gdma_dev->gdma_context;
+ struct mana_port_context *apc;
+ struct net_device *ndev;
+ int err;
+
+ ndev = alloc_etherdev_mq(sizeof(struct mana_port_context),
+ gc->max_num_queues);
+ if (!ndev)
+ return -ENOMEM;
+
+ *ndev_storage = ndev;
+
+ apc = netdev_priv(ndev);
+ apc->ac = ac;
+ apc->ndev = ndev;
+ apc->max_queues = gc->max_num_queues;
+ apc->num_queues = min_t(uint, gc->max_num_queues, MANA_MAX_NUM_QUEUES);
+ apc->port_handle = INVALID_MANA_HANDLE;
+ apc->port_idx = port_idx;
+
+ ndev->netdev_ops = &mana_devops;
+ ndev->ethtool_ops = &mana_ethtool_ops;
+ ndev->mtu = ETH_DATA_LEN;
+ ndev->max_mtu = ndev->mtu;
+ ndev->min_mtu = ndev->mtu;
+ ndev->needed_headroom = MANA_HEADROOM;
+ SET_NETDEV_DEV(ndev, gc->dev);
+
+ netif_carrier_off(ndev);
+
+ get_random_bytes(apc->hashkey, MANA_HASH_KEY_SIZE);Current practice for network drivers is to use netdev_rss_key_fill() for this.