From: Roi Dayan roid@nvidia.com
commit c07531c01d8284aedaf95708ea90e76d11af0e21 upstream.
Offloading conns could fail for multiple reasons and a hw refresh bit is set to try to reoffload it in next sw packet. But it could be in some cases and future points that the hw refresh bit is not set but a refresh could succeed. Remove the hw refresh bit and do offload refresh if requested. There won't be a new work entry if a work is already pending anyway as there is the hw pending bit.
Fixes: 8b3646d6e0c4 ("net/sched: act_ct: Support refreshing the flow table entries") Signed-off-by: Roi Dayan roid@nvidia.com Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/netfilter/nf_flow_table.h | 1 - net/netfilter/nf_flow_table_core.c | 3 +-- net/netfilter/nf_flow_table_offload.c | 7 ++++--- 3 files changed, 5 insertions(+), 6 deletions(-)
--- a/include/net/netfilter/nf_flow_table.h +++ b/include/net/netfilter/nf_flow_table.h @@ -130,7 +130,6 @@ enum nf_flow_flags { NF_FLOW_HW, NF_FLOW_HW_DYING, NF_FLOW_HW_DEAD, - NF_FLOW_HW_REFRESH, NF_FLOW_HW_PENDING, };
--- a/net/netfilter/nf_flow_table_core.c +++ b/net/netfilter/nf_flow_table_core.c @@ -259,8 +259,7 @@ void flow_offload_refresh(struct nf_flow { flow->timeout = nf_flowtable_time_stamp + NF_FLOW_TIMEOUT;
- if (likely(!nf_flowtable_hw_offload(flow_table) || - !test_and_clear_bit(NF_FLOW_HW_REFRESH, &flow->flags))) + if (likely(!nf_flowtable_hw_offload(flow_table))) return;
nf_flow_offload_add(flow_table, flow); --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -753,10 +753,11 @@ static void flow_offload_work_add(struct
err = flow_offload_rule_add(offload, flow_rule); if (err < 0) - set_bit(NF_FLOW_HW_REFRESH, &offload->flow->flags); - else - set_bit(IPS_HW_OFFLOAD_BIT, &offload->flow->ct->status); + goto out;
+ set_bit(IPS_HW_OFFLOAD_BIT, &offload->flow->ct->status); + +out: nf_flow_offload_destroy(flow_rule); }