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net: hold netdev instance lock during nft ndo_setup_tc

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Introduce new dev_setup_tc for nft ndo_setup_tc paths.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeed@kernel.org>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250305163732.2766420-3-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Stanislav Fomichev 2025-03-05 08:37:20 -08:00 committed by Jakub Kicinski
parent d4c22ec680
commit c4f0f30b42
5 changed files with 22 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/ethernet/intel/iavf/iavf_main.c
View file

@ -3894,10 +3894,8 @@ static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))
return 0;
netdev_lock(netdev);
netif_set_real_num_rx_queues(netdev, total_qps);
netif_set_real_num_tx_queues(netdev, total_qps);
netdev_unlock(netdev);
return ret;
}

2
include/linux/netdevice.h
View file

@ -3353,6 +3353,8 @@ int dev_alloc_name(struct net_device *dev, const char *name);
int dev_open(struct net_device *dev, struct netlink_ext_ack *extack);
void dev_close(struct net_device *dev);
void dev_close_many(struct list_head *head, bool unlink);
int dev_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data);
void dev_disable_lro(struct net_device *dev);
int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb);
u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,

18
net/core/dev.c
View file

@ -1786,6 +1786,24 @@ void dev_close(struct net_device *dev)
}
EXPORT_SYMBOL(dev_close);
int dev_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
const struct net_device_ops *ops = dev->netdev_ops;
int ret;
ASSERT_RTNL();
if (!ops->ndo_setup_tc)
return -EOPNOTSUPP;
netdev_lock_ops(dev);
ret = ops->ndo_setup_tc(dev, type, type_data);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_setup_tc);
/**
* dev_disable_lro - disable Large Receive Offload on a device

2
net/netfilter/nf_flow_table_offload.c
View file

@ -1175,7 +1175,7 @@ static int nf_flow_table_offload_cmd(struct flow_block_offload *bo,
nf_flow_table_block_offload_init(bo, dev_net(dev), cmd, flowtable,
extack);
down_write(&flowtable->flow_block_lock);
err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_FT, bo);
err = dev_setup_tc(dev, TC_SETUP_FT, bo);
up_write(&flowtable->flow_block_lock);
if (err < 0)
return err;

2
net/netfilter/nf_tables_offload.c
View file

@ -390,7 +390,7 @@ static int nft_block_offload_cmd(struct nft_base_chain *chain,
nft_flow_block_offload_init(&bo, dev_net(dev), cmd, chain, &extack);
err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_BLOCK, &bo);
err = dev_setup_tc(dev, TC_SETUP_BLOCK, &bo);
if (err < 0)
return err;