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There exist two > approaches for SW to recongnize mailbox message from HW. One way is using > match_id, the other is to compare the message code. The two approaches are > independent and used in different scenarios. > > But for the second approache, "next_to_use" should be updated and written > to HW register. If it not done, HW do not know the position SW steps, then, > the communication between SW and HW will turn to be failed. > > Fixes: dbbbad23e380 ("net/hns3: fix VF handling LSC event in secondary process") > Cc: stable@dpdk.org > > Signed-off-by: Min Hu (Connor) Applied to dpdk-next-net/main, thanks.