From c129412f74e99b609f0a8e95fc3915af1fd40f34 Mon Sep 17 00:00:00 2001 From: wenxu Date: Wed, 25 Nov 2020 12:01:23 +0800 Subject: 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 Acked-by: Cong Wang Acked-by: Jamal Hadi Salim Signed-off-by: Jakub Kicinski --- include/net/sch_generic.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/sch_generic.h') diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index dd74f06bbb0b..162ed6249e8b 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -1281,4 +1281,6 @@ void mini_qdisc_pair_init(struct mini_Qdisc_pair *miniqp, struct Qdisc *qdisc, void mini_qdisc_pair_block_init(struct mini_Qdisc_pair *miniqp, struct tcf_block *block); +int sch_frag_xmit_hook(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb)); + #endif -- cgit v1.2.3