公开(公告)号：US10901897B2

公开(公告)日：2021-01-26

申请号：US16248390

申请日：2019-01-15

申请人： MARVELL ISRAEL (M.I.S.L.) LTD.

发明人： Dovrat Zifroni ,  Henri Sznajder ,  Dmitry Lyachover

IPC分类号： G06F12/08 ,  G06F12/0802 ,  G06F16/953

摘要： Aspects of the disclosure provide a network device. The network device includes a search engine, a ternary content addressable memory (TCAM) cache engine, a search key generation unit and an output controller. The search engine stores a lookup table of entries for rules of packet processing, and searches the lookup table in response to packets received from a network interface of the network device. The TCAM cache engine caches a subset of the entries in the lookup table based on hit statistics of the entries. The search key generation unit generates a search key based on a received packet and provides the search key to the search engine and to the TCAM cache engine. The output controller outputs a search result from the TCAM cache engine when the TCAM cache engine has a matching entry to the search key.