diff options
| author | wenxu <wenxu@ucloud.cn> | 2020-11-25 12:01:23 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-27 14:36:02 -0800 |
| commit | c129412f74e99b609f0a8e95fc3915af1fd40f34 (patch) | |
| tree | 05c6360e02fed40ef5dd599c1974414b639cb7e7 /net/sched/act_ct.c | |
| parent | fa6d639930ee5cd3f932cc314f3407f07a06582d (diff) | |
| download | lwn-c129412f74e99b609f0a8e95fc3915af1fd40f34.tar.gz lwn-c129412f74e99b609f0a8e95fc3915af1fd40f34.zip | |
net/sched: sch_frag: add generic packet fragment support.
Currently kernel tc subsystem can do conntrack in cat_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.
This patch add support for a xmit hook to mirred, that gets executed before
xmiting the packet. Then, when act_ct gets loaded, it configs that hook.
The frag xmit hook maybe reused by other modules.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/sched/act_ct.c')
| -rw-r--r-- | net/sched/act_ct.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index aba3cd85f284..61092c5d646c 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -1541,6 +1541,8 @@ static int __init ct_init_module(void) if (err) goto err_register; + static_branch_inc(&tcf_frag_xmit_count); + return 0; err_register: @@ -1552,6 +1554,7 @@ err_tbl_init: static void __exit ct_cleanup_module(void) { + static_branch_dec(&tcf_frag_xmit_count); tcf_unregister_action(&act_ct_ops, &ct_net_ops); tcf_ct_flow_tables_uninit(); destroy_workqueue(act_ct_wq); |