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wireguard: device: leverage core stats allocator

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With commit 34d21de99c ("net: Move {l,t,d}stats allocation to core
and convert veth & vrf"), stats allocation could be done on net core
instead of in this driver.

With this new approach, the driver doesn't have to bother with error
handling (allocation failure checking, making sure free happens in the
right spot, etc). This is core responsibility now.

Remove the allocation in this driver and leverage the network core
allocation instead.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Breno Leitao 2024-03-14 16:49:07 -06:00 committed by Paolo Abeni
parent bba045dc4d
commit db2952dfbd
1 changed files with 2 additions and 8 deletions
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10
drivers/net/wireguard/device.c
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@ -262,7 +262,6 @@ static void wg_destruct(struct net_device *dev)
rcu_barrier(); /* Wait for all the peers to be actually freed. */
wg_ratelimiter_uninit();
memzero_explicit(&wg->static_identity, sizeof(wg->static_identity));
free_percpu(dev->tstats);
kvfree(wg->index_hashtable);
kvfree(wg->peer_hashtable);
mutex_unlock(&wg->device_update_lock);
@ -297,6 +296,7 @@ static void wg_setup(struct net_device *dev)
dev->hw_enc_features |= WG_NETDEV_FEATURES;
dev->mtu = ETH_DATA_LEN - overhead;
dev->max_mtu = round_down(INT_MAX, MESSAGE_PADDING_MULTIPLE) - overhead;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
SET_NETDEV_DEVTYPE(dev, &device_type);
@ -331,14 +331,10 @@ static int wg_newlink(struct net *src_net, struct net_device *dev,
if (!wg->index_hashtable)
goto err_free_peer_hashtable;
dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
goto err_free_index_hashtable;
wg->handshake_receive_wq = alloc_workqueue("wg-kex-%s",
WQ_CPU_INTENSIVE | WQ_FREEZABLE, 0, dev->name);
if (!wg->handshake_receive_wq)
goto err_free_tstats;
goto err_free_index_hashtable;
wg->handshake_send_wq = alloc_workqueue("wg-kex-%s",
WQ_UNBOUND | WQ_FREEZABLE, 0, dev->name);
@ -397,8 +393,6 @@ err_destroy_handshake_send:
destroy_workqueue(wg->handshake_send_wq);
err_destroy_handshake_receive:
destroy_workqueue(wg->handshake_receive_wq);
err_free_tstats:
free_percpu(dev->tstats);
err_free_index_hashtable:
kvfree(wg->index_hashtable);
err_free_peer_hashtable: