[PATCH v3 net-next 22/23] ipmr, ip6mr: add net device refcount tracker to struct vif_device
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STALE1758d
From: Eric Dumazet <hidden>
Date: 2021-12-05 04:24:33
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Revision v3 of 2 in this series.
Revisions (2)
- v2 [diff vs current]
- v3 current
From: Eric Dumazet <redacted> Signed-off-by: Eric Dumazet <redacted> --- include/linux/mroute_base.h | 2 ++ net/ipv4/ipmr.c | 3 ++- net/ipv6/ip6mr.c | 3 ++- 3 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h
index 8071148f29a6ec6a95df7e74bbfdeab5b5f6a644..e05ee9f001ffbf30f7b26ab5555e2db5cc058560 100644
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h@@ -12,6 +12,7 @@ /** * struct vif_device - interface representor for multicast routing * @dev: network device being used + * @dev_tracker: refcount tracker for @dev reference * @bytes_in: statistic; bytes ingressing * @bytes_out: statistic; bytes egresing * @pkt_in: statistic; packets ingressing
@@ -26,6 +27,7 @@ */ struct vif_device { struct net_device *dev; + netdevice_tracker dev_tracker; unsigned long bytes_in, bytes_out; unsigned long pkt_in, pkt_out; unsigned long rate_limit;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 2dda856ca260259e5626577e2b2993a6d9967aa6..4c7aca884fa9a35816008a5f3a1a58dd1baf6c06 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c@@ -696,7 +696,7 @@ static int vif_delete(struct mr_table *mrt, int vifi, int notify, if (v->flags & (VIFF_TUNNEL | VIFF_REGISTER) && !notify) unregister_netdevice_queue(dev, head); - dev_put(dev); + dev_put_track(dev, &v->dev_tracker); return 0; }
@@ -896,6 +896,7 @@ static int vif_add(struct net *net, struct mr_table *mrt, /* And finish update writing critical data */ write_lock_bh(&mrt_lock); v->dev = dev; + netdev_tracker_alloc(dev, &v->dev_tracker, GFP_ATOMIC); if (v->flags & VIFF_REGISTER) mrt->mroute_reg_vif_num = vifi; if (vifi+1 > mrt->maxvif)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 36ed9efb88254003720549da52f39b11e9bf911f..a77a15a7f3dcb61c53a86e055b8a1507d9d591f8 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c@@ -746,7 +746,7 @@ static int mif6_delete(struct mr_table *mrt, int vifi, int notify, if ((v->flags & MIFF_REGISTER) && !notify) unregister_netdevice_queue(dev, head); - dev_put(dev); + dev_put_track(dev, &v->dev_tracker); return 0; }
@@ -919,6 +919,7 @@ static int mif6_add(struct net *net, struct mr_table *mrt, /* And finish update writing critical data */ write_lock_bh(&mrt_lock); v->dev = dev; + netdev_tracker_alloc(dev, &v->dev_tracker, GFP_ATOMIC); #ifdef CONFIG_IPV6_PIMSM_V2 if (v->flags & MIFF_REGISTER) mrt->mroute_reg_vif_num = vifi;
--
2.34.1.400.ga245620fadb-goog