Louis Peens 7cc93d888d nfp: flower-ct: remove callback delete deadlock ... The current location of the callback delete can lead to a race condition where deleting the callback requires a write_lock on the nf_table, but at the same time another thread from netfilter could have taken a read lock on the table before trying to offload. Since the driver is taking a rtnl_lock this can lead into a deadlock situation, where the netfilter offload will wait for the cls_flower rtnl_lock to be released, but this cannot happen since this is waiting for the nf_table read_lock to be released before it can delete the callback. Solve this by completely removing the nf_flow_table_offload_del_cb call, as this will now be cleaned up by act_ct itself when cleaning up the specific nf_table. Fixes: 62268e7814 ("nfp: flower-ct: add nft callback stubs") Signed-off-by: Louis Peens <louis.peens@corigine.com> Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com> Signed-off-by: Simon Horman <simon.horman@corigine.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2021-07-02 13:36:35 -07:00
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nfp	nfp: flower-ct: remove callback delete deadlock	2021-07-02 13:36:35 -07:00
Kconfig	ethernet: select CONFIG_CRC32 as needed	2020-12-04 14:42:21 -08:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00