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[v4,net-next,0/3] net/sched: fix over mtu packet of defrag in

Message ID 1606276883-6825-1-git-send-email-wenxu@ucloud.cn
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Series net/sched: fix over mtu packet of defrag in | expand

Message

wenxu Nov. 25, 2020, 4:01 a.m. UTC 
From: wenxu <wenxu@ucloud.cn>

Currently kernel tc subsystem can do conntrack in act_ct. But when several
fragment packets go through the act_ct, function tcf_ct_handle_fragments
will defrag the packets to a big one. But the last action will redirect
mirred to a device which maybe lead the reassembly big packet over the mtu
of target device.

The first patch fix miss init the qdisc_skb_cb->mru
The send one refactor the hanle of xmit in act_mirred and prepare for the
third one
The last one add implict packet fragment support to fix the over mtu for
defrag in act_ct.

wenxu (3):
  net/sched: fix miss init the mru in qdisc_skb_cb
  net/sched: act_mirred: refactor the handle of xmit
  net/sched: sch_frag: add generic packet fragment support.

 include/net/act_api.h     |   6 ++
 include/net/sch_generic.h |   5 +-
 net/core/dev.c            |   2 +
 net/sched/Makefile        |   1 +
 net/sched/act_api.c       |  16 +++++
 net/sched/act_ct.c        |   3 +
 net/sched/act_mirred.c    |  21 +++++--
 net/sched/sch_frag.c      | 150 ++++++++++++++++++++++++++++++++++++++++++++++
 8 files changed, 194 insertions(+), 10 deletions(-)
 create mode 100644 net/sched/sch_frag.c