From: wenxu <wenxu@xxxxxxxxx> Add nf_ct_frag_gather and Make nf_ct_frag6_gather elide the CB clear when packets are defragmented by connection tracking. This can make each subsystem such as br_netfilter, openvswitch, act_ct do defrag without restore the CB. This also avoid serious crashes and problems in ct subsystem. Because Some packet schedulers store pointers in the qdisc CB private area and parallel accesses to the SKB. This series following up http://patchwork.ozlabs.org/project/netdev/patch/1593422178-26949-1-git-send-email-wenxu@xxxxxxxxx/ patch1: add nf_ct_frag_gather elide the CB clear patch2: make nf_ct_frag6_gather elide the CB clear patch3: fix clobber qdisc_skb_cb in act_ct with defrag v2: resue some ip_defrag function in patch1 wenxu (3): net: ip_fragment: Add ip_defrag_ignore_cb support netfilter: nf_conntrack_reasm: make nf_ct_frag6_gather elide the CB clear net/sched: act_ct: fix clobber qdisc_skb_cb in defrag include/linux/netfilter_ipv6.h | 9 ++--- include/net/ip.h | 2 ++ include/net/netfilter/ipv6/nf_defrag_ipv6.h | 3 +- net/bridge/netfilter/nf_conntrack_bridge.c | 7 ++-- net/ipv4/ip_fragment.c | 55 ++++++++++++++++++++++++----- net/ipv6/netfilter/nf_conntrack_reasm.c | 19 ++++++---- net/ipv6/netfilter/nf_defrag_ipv6_hooks.c | 3 +- net/openvswitch/conntrack.c | 8 ++--- net/sched/act_ct.c | 8 ++--- 9 files changed, 77 insertions(+), 37 deletions(-) -- 1.8.3.1
