With commit 34d21de99cea9 ("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 the ip6_gre and leverage the network
core allocation instead.
Signed-off-by: Breno Leitao <[email protected]>
---
net/ipv6/ip6_gre.c | 22 +++++-----------------
1 file changed, 5 insertions(+), 17 deletions(-)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 95fbdaf85711..b5b417902c0a 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1444,7 +1444,6 @@ static void ip6gre_dev_free(struct net_device *dev)
gro_cells_destroy(&t->gro_cells);
dst_cache_destroy(&t->dst_cache);
- free_percpu(dev->tstats);
}
static void ip6gre_tunnel_setup(struct net_device *dev)
@@ -1453,6 +1452,7 @@ static void ip6gre_tunnel_setup(struct net_device *dev)
dev->needs_free_netdev = true;
dev->priv_destructor = ip6gre_dev_free;
+ dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
dev->type = ARPHRD_IP6GRE;
dev->flags |= IFF_NOARP;
@@ -1500,13 +1500,9 @@ static int ip6gre_tunnel_init_common(struct net_device *dev)
tunnel->net = dev_net(dev);
strcpy(tunnel->parms.name, dev->name);
- dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
- if (!dev->tstats)
- return -ENOMEM;
-
ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);
if (ret)
- goto cleanup_alloc_pcpu_stats;
+ return ret;
ret = gro_cells_init(&tunnel->gro_cells, dev);
if (ret)
@@ -1530,9 +1526,6 @@ static int ip6gre_tunnel_init_common(struct net_device *dev)
cleanup_dst_cache_init:
dst_cache_destroy(&tunnel->dst_cache);
-cleanup_alloc_pcpu_stats:
- free_percpu(dev->tstats);
- dev->tstats = NULL;
return ret;
}
@@ -1893,13 +1886,9 @@ static int ip6erspan_tap_init(struct net_device *dev)
tunnel->net = dev_net(dev);
strcpy(tunnel->parms.name, dev->name);
- dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
- if (!dev->tstats)
- return -ENOMEM;
-
ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);
if (ret)
- goto cleanup_alloc_pcpu_stats;
+ return ret;
ret = gro_cells_init(&tunnel->gro_cells, dev);
if (ret)
@@ -1921,9 +1910,6 @@ static int ip6erspan_tap_init(struct net_device *dev)
cleanup_dst_cache_init:
dst_cache_destroy(&tunnel->dst_cache);
-cleanup_alloc_pcpu_stats:
- free_percpu(dev->tstats);
- dev->tstats = NULL;
return ret;
}
@@ -1948,6 +1934,7 @@ static void ip6gre_tap_setup(struct net_device *dev)
dev->needs_free_netdev = true;
dev->priv_destructor = ip6gre_dev_free;
+ dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
netif_keep_dst(dev);
@@ -2250,6 +2237,7 @@ static void ip6erspan_tap_setup(struct net_device *dev)
dev->needs_free_netdev = true;
dev->priv_destructor = ip6gre_dev_free;
+ dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
netif_keep_dst(dev);
--
2.43.0
Commit 3e2f544dd8a33 ("net: get stats64 if device if driver is
configured") moved the callback to dev_get_tstats64() to net core, so,
unless the driver is doing some custom stats collection, it does not
need to set .ndo_get_stats64.
Since this driver is now relying in NETDEV_PCPU_STAT_TSTATS, then, it
doesn't need to set the dev_get_tstats64() generic .ndo_get_stats64
function pointer.
Signed-off-by: Breno Leitao <[email protected]>
---
net/ipv6/ip6_gre.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index b5b417902c0a..3942bd2ade78 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1434,7 +1434,6 @@ static const struct net_device_ops ip6gre_netdev_ops = {
.ndo_start_xmit = ip6gre_tunnel_xmit,
.ndo_siocdevprivate = ip6gre_tunnel_siocdevprivate,
.ndo_change_mtu = ip6_tnl_change_mtu,
- .ndo_get_stats64 = dev_get_tstats64,
.ndo_get_iflink = ip6_tnl_get_iflink,
};
@@ -1857,7 +1856,6 @@ static const struct net_device_ops ip6gre_tap_netdev_ops = {
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ip6_tnl_change_mtu,
- .ndo_get_stats64 = dev_get_tstats64,
.ndo_get_iflink = ip6_tnl_get_iflink,
};
@@ -1920,7 +1918,6 @@ static const struct net_device_ops ip6erspan_netdev_ops = {
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ip6_tnl_change_mtu,
- .ndo_get_stats64 = dev_get_tstats64,
.ndo_get_iflink = ip6_tnl_get_iflink,
};
--
2.43.0
On 4/12/24 9:19 AM, Breno Leitao wrote:
> With commit 34d21de99cea9 ("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 the ip6_gre and leverage the network
> core allocation instead.
>
> Signed-off-by: Breno Leitao <[email protected]>
> ---
> net/ipv6/ip6_gre.c | 22 +++++-----------------
> 1 file changed, 5 insertions(+), 17 deletions(-)
>
Reviewed-by: David Ahern <[email protected]>
On 4/12/24 9:19 AM, Breno Leitao wrote:
> Commit 3e2f544dd8a33 ("net: get stats64 if device if driver is
> configured") moved the callback to dev_get_tstats64() to net core, so,
> unless the driver is doing some custom stats collection, it does not
> need to set .ndo_get_stats64.
>
> Since this driver is now relying in NETDEV_PCPU_STAT_TSTATS, then, it
> doesn't need to set the dev_get_tstats64() generic .ndo_get_stats64
> function pointer.
>
> Signed-off-by: Breno Leitao <[email protected]>
> ---
> net/ipv6/ip6_gre.c | 3 ---
> 1 file changed, 3 deletions(-)
>
Reviewed-by: David Ahern <[email protected]>
Hello:
This series was applied to netdev/net-next.git (main)
by David S. Miller <[email protected]>:
On Fri, 12 Apr 2024 08:19:25 -0700 you wrote:
> With commit 34d21de99cea9 ("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.
>
> [...]
Here is the summary with links:
- [net-next,1/2] net: ipv6_gre: Do not use custom stat allocator
https://git.kernel.org/netdev/net-next/c/8622f90a371b
- [net-next,2/2] net: ip6_gre: Remove generic .ndo_get_stats64
https://git.kernel.org/netdev/net-next/c/05d604a57773
You are awesome, thank you!
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