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Old 08-22-2016, 06:58 AM   #1
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Question Receving a callback at XFRM ESP tunnel creation


My goal is to run some code before actual packets begin running in an IPSec tunnel established by XFRM. For this, I am thinking of running a callback at the time of an XFRM ESP tunnel creation, where tunnel IPs and the SPI will be known. Is there a standard way of achieving this? If I'm not mistaken, registering for any event that has xfrm_state available should be enough, for instance, xfrm_add_sa, esp_init_state.

Old 08-31-2016, 03:58 PM   #2
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You can use netlink socket called NETLINK_XFRM to communiate to XFRM module.


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