diff mbox series

[4/4] xfrm: Do not allocate stats in the driver

Message ID 20240306102421.3963212-5-steffen.klassert@secunet.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series [1/4] xfrm: introduce forwarding of ICMP Error messages | expand

Checks

Context Check Description
netdev/series_format warning Pull request is its own cover letter; Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 940 this patch: 940
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 2 maintainers not CCed: pabeni@redhat.com edumazet@google.com
netdev/build_clang success Errors and warnings before: 956 this patch: 956
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 956 this patch: 956
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 30 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-03-06--21-00 (tests: 892)

Commit Message

Steffen Klassert March 6, 2024, 10:24 a.m. UTC 
From: Breno Leitao <leitao@debian.org>

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 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 xfrm driver and leverage the network
core allocation.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
 net/xfrm/xfrm_interface_core.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/net/xfrm/xfrm_interface_core.c b/net/xfrm/xfrm_interface_core.c
index 21d50d75c260..1a1f6613fda2 100644
--- a/net/xfrm/xfrm_interface_core.c
+++ b/net/xfrm/xfrm_interface_core.c
@@ -240,7 +240,6 @@  static void xfrmi_dev_free(struct net_device *dev)
 	struct xfrm_if *xi = netdev_priv(dev);
 
 	gro_cells_destroy(&xi->gro_cells);
-	free_percpu(dev->tstats);
 }
 
 static int xfrmi_create(struct net_device *dev)
@@ -749,6 +748,7 @@  static void xfrmi_dev_setup(struct net_device *dev)
 	dev->flags 		= IFF_NOARP;
 	dev->needs_free_netdev	= true;
 	dev->priv_destructor	= xfrmi_dev_free;
+	dev->pcpu_stat_type	= NETDEV_PCPU_STAT_TSTATS;
 	netif_keep_dst(dev);
 
 	eth_broadcast_addr(dev->broadcast);
@@ -765,15 +765,9 @@  static int xfrmi_dev_init(struct net_device *dev)
 	struct net_device *phydev = __dev_get_by_index(xi->net, xi->p.link);
 	int err;
 
-	dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
-	if (!dev->tstats)
-		return -ENOMEM;
-
 	err = gro_cells_init(&xi->gro_cells, dev);
-	if (err) {
-		free_percpu(dev->tstats);
+	if (err)
 		return err;
-	}
 
 	dev->features |= NETIF_F_LLTX;
 	dev->features |= XFRMI_FEATURES;