diff mbox series

[v2,net-next,13/23] net: add net device refcount tracker to struct neighbour

Message ID 20211203024640.1180745-14-eric.dumazet@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: add preliminary netdev refcount tracking | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3079 this patch: 3079
netdev/cc_maintainers warning 2 maintainers not CCed: daniel@iogearbox.net dsahern@kernel.org
netdev/build_clang success Errors and warnings before: 417 this patch: 417
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 3210 this patch: 3210
netdev/checkpatch warning WARNING: Missing commit description - Add an appropriate one
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Eric Dumazet Dec. 3, 2021, 2:46 a.m. UTC 
From: Eric Dumazet <edumazet@google.com>

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 include/net/neighbour.h | 1 +
 net/core/neighbour.c    | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 55af812c3ed5704813bd64aa760246255aa5f93f..190b07fe089ef5c900a0d97df0bc4d667d8bdcd6 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -158,6 +158,7 @@  struct neighbour {
 	struct list_head	managed_list;
 	struct rcu_head		rcu;
 	struct net_device	*dev;
+	netdevice_tracker	dev_tracker;
 	u8			primary_key[0];
 } __randomize_layout;
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 72ba027c34cfea6f38a9e78927c35048ebfe7a7f..fb340347e4d88f0058383697071cfb5bfbd9f925 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -624,7 +624,7 @@  ___neigh_create(struct neigh_table *tbl, const void *pkey,
 
 	memcpy(n->primary_key, pkey, key_len);
 	n->dev = dev;
-	dev_hold(dev);
+	dev_hold_track(dev, &n->dev_tracker, GFP_ATOMIC);
 
 	/* Protocol specific setup. */
 	if (tbl->constructor &&	(error = tbl->constructor(n)) < 0) {
@@ -880,7 +880,7 @@  void neigh_destroy(struct neighbour *neigh)
 	if (dev->netdev_ops->ndo_neigh_destroy)
 		dev->netdev_ops->ndo_neigh_destroy(dev, neigh);
 
-	dev_put(dev);
+	dev_put_track(dev, &neigh->dev_tracker);
 	neigh_parms_put(neigh->parms);
 
 	neigh_dbg(2, "neigh %p is destroyed\n", neigh);