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authorwenxu <wenxu@ucloud.cn>2020-11-25 12:01:23 +0800
committerJakub Kicinski <kuba@kernel.org>2020-11-27 14:36:02 -0800
commitc129412f74e99b609f0a8e95fc3915af1fd40f34 (patch)
tree05c6360e02fed40ef5dd599c1974414b639cb7e7 /include/net/act_api.h
parentfa6d639930ee5cd3f932cc314f3407f07a06582d (diff)
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 'include/net/act_api.h')
-rw-r--r--include/net/act_api.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 87214927314a..55dab604861f 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -239,6 +239,12 @@ int tcf_action_check_ctrlact(int action, struct tcf_proto *tp,
struct netlink_ext_ack *newchain);
struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action,
struct tcf_chain *newchain);
+
+#ifdef CONFIG_INET
+DECLARE_STATIC_KEY_FALSE(tcf_frag_xmit_count);
+#endif
+
+int tcf_dev_queue_xmit(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb));
#endif /* CONFIG_NET_CLS_ACT */
static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,