Please see this PR to fix what I need.
https://github.com/FDio/vpp/pull/33 Please review - thanks. Hemant From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of hemant via lists.fd.io Sent: Monday, January 18, 2021 10:52 AM To: vpp-dev@lists.fd.io Subject: [vpp-dev] classifier howto? I am used to the bihash's easy to understand key-value pair API to program an entry for table lookup using the hash. https://github.com/FDio/vpp/blob/master/src/vppinfra/bihash_48_8.h#L39 The value in the struct is a u64. To see how I program a classifier entry for use by the data plane, I looked at the classifier entry data structure: https://github.com/FDio/vpp/blob/master/src/vnet/classify/vnet_classify.h#L6 6 The data structure uses a "u32x4 key[0];" key, but where is the value? I am used to seeing a key and value in an entry. Is "u32 opaque_index" the value? If yes, why does bihash use a "u64" for value but the classifier uses a u32? If the classifier table is hit, my next_node needs the "value" associated with the key that incurred the table hit. After all, for bihash, e.g., clib_bihash_search_48_8() API returns an explicit value. I plan to use the API in vnet_classify_add_del_session() to program ip4 and ip6 src and dst address prefix matching. Thanks, Hemant
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