| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250520203614.2693870-3-stfomichev@gmail.com>
Date: Tue, 20 May 2025 13:36:13 -0700
From: Stanislav Fomichev <stfomichev@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
skalluru@...vell.com,
manishc@...vell.com,
andrew+netdev@...n.ch,
michael.chan@...adcom.com,
pavan.chebbi@...adcom.com,
ajit.khaparde@...adcom.com,
sriharsha.basavapatna@...adcom.com,
somnath.kotur@...adcom.com,
anthony.l.nguyen@...el.com,
przemyslaw.kitszel@...el.com,
tariqt@...dia.com,
saeedm@...dia.com,
louis.peens@...igine.com,
shshaikh@...vell.com,
GR-Linux-NIC-Dev@...vell.com,
ecree.xilinx@...il.com,
horms@...nel.org,
dsahern@...nel.org,
ruanjinjie@...wei.com,
mheib@...hat.com,
stfomichev@...il.com,
linux-kernel@...r.kernel.org,
intel-wired-lan@...ts.osuosl.org,
linux-rdma@...r.kernel.org,
oss-drivers@...igine.com,
linux-net-drivers@....com,
leon@...nel.org
Subject: [PATCH net-next 2/3] udp_tunnel: remove rtnl_lock dependency
Drivers that are using ops lock and don't depend on RTNL lock
still need to manage it because udp_tunnel's RTNL dependency.
Introduce new udp_tunnel_nic_lock and use it instead of
rtnl_lock. Drop non-UDP_TUNNEL_NIC_INFO_MAY_SLEEP mode from
udp_tunnel infra (udp_tunnel_nic_device_sync_work needs to
grab udp_tunnel_nic_lock mutex and might sleep).
Cc: Michael Chan <michael.chan@...adcom.com>
Suggested-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Stanislav Fomichev <stfomichev@...il.com>
---
.../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 3 +-
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 6 ++--
drivers/net/ethernet/emulex/benet/be_main.c | 3 +-
drivers/net/ethernet/intel/i40e/i40e_main.c | 1 -
drivers/net/ethernet/intel/ice/ice_main.c | 1 -
.../net/ethernet/mellanox/mlx4/en_netdev.c | 3 +-
.../net/ethernet/mellanox/mlx5/core/en_main.c | 3 +-
.../ethernet/netronome/nfp/nfp_net_common.c | 3 +-
.../net/ethernet/qlogic/qede/qede_filter.c | 3 --
.../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 1 -
drivers/net/ethernet/sfc/ef10.c | 1 -
drivers/net/netdevsim/netdevsim.h | 1 -
drivers/net/netdevsim/udp_tunnels.c | 12 -------
include/net/udp_tunnel.h | 9 +++--
net/ipv4/udp_tunnel_nic.c | 33 ++++++++-----------
net/ipv4/udp_tunnel_stub.c | 2 ++
16 files changed, 27 insertions(+), 58 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index f522ca8ff66b..fa7e5adf9804 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -10219,8 +10219,7 @@ static int bnx2x_udp_tunnel_sync(struct net_device *netdev, unsigned int table)
static const struct udp_tunnel_nic_info bnx2x_udp_tunnels = {
.sync_table = bnx2x_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index d5495762c945..a3dadde65b8d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -15573,8 +15573,7 @@ static int bnxt_udp_tunnel_unset_port(struct net_device *netdev, unsigned int ta
static const struct udp_tunnel_nic_info bnxt_udp_tunnels = {
.set_port = bnxt_udp_tunnel_set_port,
.unset_port = bnxt_udp_tunnel_unset_port,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
@@ -15582,8 +15581,7 @@ static const struct udp_tunnel_nic_info bnxt_udp_tunnels = {
}, bnxt_udp_tunnels_p7 = {
.set_port = bnxt_udp_tunnel_set_port,
.unset_port = bnxt_udp_tunnel_unset_port,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 3d2e21592119..f49400ba9729 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -4031,8 +4031,7 @@ static int be_vxlan_unset_port(struct net_device *netdev, unsigned int table,
static const struct udp_tunnel_nic_info be_udp_tunnels = {
.set_port = be_vxlan_set_port,
.unset_port = be_vxlan_unset_port,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
},
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 120d68654e3f..3d3da9d15348 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -15891,7 +15891,6 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port;
pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port;
- pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
pf->udp_tunnel_nic.shared = &pf->udp_tunnel_shared;
pf->udp_tunnel_nic.tables[0].n_entries = I40E_MAX_PF_UDP_OFFLOAD_PORTS;
pf->udp_tunnel_nic.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN |
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 20d3baf955e3..5a60ede84091 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4745,7 +4745,6 @@ int ice_init_dev(struct ice_pf *pf)
pf->hw.udp_tunnel_nic.set_port = ice_udp_tunnel_set_port;
pf->hw.udp_tunnel_nic.unset_port = ice_udp_tunnel_unset_port;
- pf->hw.udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
pf->hw.udp_tunnel_nic.shared = &pf->hw.udp_tunnel_shared;
if (pf->hw.tnl.valid_count[TNL_VXLAN]) {
pf->hw.udp_tunnel_nic.tables[0].n_entries =
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 281b34af0bb4..d2071aff7b8f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2670,8 +2670,7 @@ static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
.sync_table = mlx4_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
},
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 9bd166f489e7..d5eff6c06b2c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5292,8 +5292,7 @@ void mlx5e_vxlan_set_netdev_info(struct mlx5e_priv *priv)
priv->nic_info.set_port = mlx5e_vxlan_set_port;
priv->nic_info.unset_port = mlx5e_vxlan_unset_port;
- priv->nic_info.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN;
+ priv->nic_info.flags = UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN;
priv->nic_info.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN;
/* Don't count the space hard-coded to the IANA port */
priv->nic_info.tables[0].n_entries =
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 28997ddab966..14ba38bcb07b 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2394,8 +2394,7 @@ static int nfp_udp_tunnel_sync(struct net_device *netdev, unsigned int table)
static const struct udp_tunnel_nic_info nfp_udp_tunnels = {
.sync_table = nfp_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+ .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
.tables = {
{
.n_entries = NFP_NET_N_VXLAN_PORTS,
diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index 985026dd816f..7e341e026489 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -987,20 +987,17 @@ static int qede_udp_tunnel_sync(struct net_device *dev, unsigned int table)
static const struct udp_tunnel_nic_info qede_udp_tunnels_both = {
.sync_table = qede_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
},
}, qede_udp_tunnels_vxlan = {
.sync_table = qede_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
},
}, qede_udp_tunnels_geneve = {
.sync_table = qede_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
},
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index eb69121df726..53cdd36c4123 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -486,7 +486,6 @@ static int qlcnic_udp_tunnel_sync(struct net_device *dev, unsigned int table)
static const struct udp_tunnel_nic_info qlcnic_udp_tunnels = {
.sync_table = qlcnic_udp_tunnel_sync,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP,
.tables = {
{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
},
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 47349c148c0c..fcec81f862ec 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -3985,7 +3985,6 @@ static int efx_ef10_udp_tnl_unset_port(struct net_device *dev,
static const struct udp_tunnel_nic_info efx_ef10_udp_tunnels = {
.set_port = efx_ef10_udp_tnl_set_port,
.unset_port = efx_ef10_udp_tnl_unset_port,
- .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP,
.tables = {
{
.n_entries = 16,
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index d04401f0bdf7..738da596f60a 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -131,7 +131,6 @@ struct netdevsim {
struct nsim_macsec macsec;
struct {
u32 inject_error;
- u32 sleep;
u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS];
u32 (*ports)[NSIM_UDP_TUNNEL_N_PORTS];
struct dentry *ddir;
diff --git a/drivers/net/netdevsim/udp_tunnels.c b/drivers/net/netdevsim/udp_tunnels.c
index 640b4983a9a0..89fff76e51cf 100644
--- a/drivers/net/netdevsim/udp_tunnels.c
+++ b/drivers/net/netdevsim/udp_tunnels.c
@@ -18,9 +18,6 @@ nsim_udp_tunnel_set_port(struct net_device *dev, unsigned int table,
ret = -ns->udp_ports.inject_error;
ns->udp_ports.inject_error = 0;
- if (ns->udp_ports.sleep)
- msleep(ns->udp_ports.sleep);
-
if (!ret) {
if (ns->udp_ports.ports[table][entry]) {
WARN(1, "entry already in use\n");
@@ -47,8 +44,6 @@ nsim_udp_tunnel_unset_port(struct net_device *dev, unsigned int table,
ret = -ns->udp_ports.inject_error;
ns->udp_ports.inject_error = 0;
- if (ns->udp_ports.sleep)
- msleep(ns->udp_ports.sleep);
if (!ret) {
u32 val = be16_to_cpu(ti->port) << 16 | ti->type;
@@ -112,12 +107,10 @@ nsim_udp_tunnels_info_reset_write(struct file *file, const char __user *data,
struct net_device *dev = file->private_data;
struct netdevsim *ns = netdev_priv(dev);
- rtnl_lock();
if (dev->reg_state == NETREG_REGISTERED) {
memset(ns->udp_ports.ports, 0, sizeof(ns->udp_ports.__ports));
udp_tunnel_nic_reset_ntf(dev);
}
- rtnl_unlock();
return count;
}
@@ -172,7 +165,6 @@ int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev,
GFP_KERNEL);
if (!info)
return -ENOMEM;
- ns->udp_ports.sleep = nsim_dev->udp_ports.sleep;
if (nsim_dev->udp_ports.sync_all) {
info->set_port = NULL;
@@ -181,8 +173,6 @@ int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev,
info->sync_table = NULL;
}
- if (ns->udp_ports.sleep)
- info->flags |= UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
if (nsim_dev->udp_ports.open_only)
info->flags |= UDP_TUNNEL_NIC_INFO_OPEN_ONLY;
if (nsim_dev->udp_ports.ipv4_only)
@@ -217,6 +207,4 @@ void nsim_udp_tunnels_debugfs_create(struct nsim_dev *nsim_dev)
&nsim_dev->udp_ports.shared);
debugfs_create_bool("udp_ports_static_iana_vxlan", 0600, nsim_dev->ddir,
&nsim_dev->udp_ports.static_iana_vxlan);
- debugfs_create_u32("udp_ports_sleep", 0600, nsim_dev->ddir,
- &nsim_dev->udp_ports.sleep);
}
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index 2df3b8344eb5..7f5537fdf2c9 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -221,19 +221,17 @@ static inline void udp_tunnel_encap_enable(struct sock *sk)
#define UDP_TUNNEL_NIC_MAX_TABLES 4
enum udp_tunnel_nic_info_flags {
- /* Device callbacks may sleep */
- UDP_TUNNEL_NIC_INFO_MAY_SLEEP = BIT(0),
/* Device only supports offloads when it's open, all ports
* will be removed before close and re-added after open.
*/
- UDP_TUNNEL_NIC_INFO_OPEN_ONLY = BIT(1),
+ UDP_TUNNEL_NIC_INFO_OPEN_ONLY = BIT(0),
/* Device supports only IPv4 tunnels */
- UDP_TUNNEL_NIC_INFO_IPV4_ONLY = BIT(2),
+ UDP_TUNNEL_NIC_INFO_IPV4_ONLY = BIT(1),
/* Device has hard-coded the IANA VXLAN port (4789) as VXLAN.
* This port must not be counted towards n_entries of any table.
* Driver will not receive any callback associated with port 4789.
*/
- UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN = BIT(3),
+ UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN = BIT(2),
};
struct udp_tunnel_nic;
@@ -328,6 +326,7 @@ struct udp_tunnel_nic_ops {
#ifdef CONFIG_INET
extern const struct udp_tunnel_nic_ops *udp_tunnel_nic_ops;
+extern struct mutex udp_tunnel_nic_lock;
#else
#define udp_tunnel_nic_ops ((struct udp_tunnel_nic_ops *)NULL)
#endif
diff --git a/net/ipv4/udp_tunnel_nic.c b/net/ipv4/udp_tunnel_nic.c
index b6d2d16189c0..4852397a595e 100644
--- a/net/ipv4/udp_tunnel_nic.c
+++ b/net/ipv4/udp_tunnel_nic.c
@@ -298,22 +298,11 @@ __udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
static void
udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
{
- const struct udp_tunnel_nic_info *info = dev->udp_tunnel_nic_info;
- bool may_sleep;
-
if (!utn->need_sync)
return;
- /* Drivers which sleep in the callback need to update from
- * the workqueue, if we come from the tunnel driver's notification.
- */
- may_sleep = info->flags & UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
- if (!may_sleep)
- __udp_tunnel_nic_device_sync(dev, utn);
- if (may_sleep || utn->need_replay) {
- queue_work(udp_tunnel_nic_workqueue, &utn->work);
- utn->work_pending = 1;
- }
+ queue_work(udp_tunnel_nic_workqueue, &utn->work);
+ utn->work_pending = 1;
}
static bool
@@ -554,11 +543,11 @@ static void __udp_tunnel_nic_reset_ntf(struct net_device *dev)
struct udp_tunnel_nic *utn;
unsigned int i, j;
- ASSERT_RTNL();
+ mutex_lock(&udp_tunnel_nic_lock);
utn = dev->udp_tunnel_nic;
if (!utn)
- return;
+ goto unlock;
utn->need_sync = false;
for (i = 0; i < utn->n_tables; i++)
@@ -569,7 +558,7 @@ static void __udp_tunnel_nic_reset_ntf(struct net_device *dev)
entry->flags &= ~(UDP_TUNNEL_NIC_ENTRY_DEL |
UDP_TUNNEL_NIC_ENTRY_OP_FAIL);
- /* We don't release rtnl across ops */
+ /* We don't release udp_tunnel_nic_lock across ops */
WARN_ON(entry->flags & UDP_TUNNEL_NIC_ENTRY_FROZEN);
if (!entry->use_cnt)
continue;
@@ -579,6 +568,9 @@ static void __udp_tunnel_nic_reset_ntf(struct net_device *dev)
}
__udp_tunnel_nic_device_sync(dev, utn);
+
+unlock:
+ mutex_unlock(&udp_tunnel_nic_lock);
}
static size_t
@@ -709,13 +701,16 @@ static void udp_tunnel_nic_device_sync_work(struct work_struct *work)
struct udp_tunnel_nic *utn =
container_of(work, struct udp_tunnel_nic, work);
- rtnl_lock();
+ mutex_lock(&udp_tunnel_nic_lock);
utn->work_pending = 0;
__udp_tunnel_nic_device_sync(utn->dev, utn);
- if (utn->need_replay)
+ if (utn->need_replay) {
+ rtnl_lock();
udp_tunnel_nic_replay(utn->dev, utn);
- rtnl_unlock();
+ rtnl_unlock();
+ }
+ mutex_unlock(&udp_tunnel_nic_lock);
}
static struct udp_tunnel_nic *
diff --git a/net/ipv4/udp_tunnel_stub.c b/net/ipv4/udp_tunnel_stub.c
index c4b2888f5fef..d60b3262beb3 100644
--- a/net/ipv4/udp_tunnel_stub.c
+++ b/net/ipv4/udp_tunnel_stub.c
@@ -3,5 +3,7 @@
#include <net/udp_tunnel.h>
+DEFINE_MUTEX(udp_tunnel_nic_lock);
+EXPORT_SYMBOL_GPL(udp_tunnel_nic_lock);
const struct udp_tunnel_nic_ops *udp_tunnel_nic_ops;
EXPORT_SYMBOL_GPL(udp_tunnel_nic_ops);
--
2.49.0
Powered by blists - more mailing lists