From: Kiran Kumar K <[email protected]> This patch reserves 2 bits as input selection to select Inner and outer encapsulation level for RSS computation. It is combined with existing ETH_RSS_* to choose Inner or outer layers. This functionality already exists in rte_flow through level parameter in RSS action configuration rte_flow_action_rss.
Signed-off-by: Kiran Kumar K <[email protected]> --- V7 Changes: * Re-worked to keep it in sync with rte_flow_action_rss and support upto 3 levels. * Addressed testpmd review comments. lib/librte_ethdev/rte_ethdev.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index 70295d7ab..13e49bbd7 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -552,6 +552,33 @@ struct rte_eth_rss_conf { #define RTE_ETH_RSS_L3_PRE64 (1ULL << 53) #define RTE_ETH_RSS_L3_PRE96 (1ULL << 52) +/* + * We use the following macros to combine with the above layers to choose + * inner and outer layers or both for RSS computation. + * bit 50 and 51 are reserved for this. + */ + +/** level 0, requests the default behavior. Depending on the packet + * type, it can mean outermost, innermost, anything in between or even no RSS. + * It basically stands for the innermost encapsulation level RSS + * can be performed on according to PMD and device capabilities. + */ +#define ETH_RSS_LEVEL_0 (0ULL << 50) + +/** level 1, requests RSS to be performed on the outermost packet + * encapsulation level. + */ +#define ETH_RSS_LEVEL_1 (1ULL << 50) + +/** level 2, requests RSS to be performed on the + * specified inner packet encapsulation level, from outermost to + * innermost (lower to higher values). + */ +#define ETH_RSS_LEVEL_2 (2ULL << 50) +#define ETH_RSS_LEVEL_MASK (3ULL << 50) + +#define ETH_RSS_LEVEL(rss_hf) ((rss_hf & ETH_RSS_LEVEL_MASK) >> 50) + /** * For input set change of hash filter, if SRC_ONLY and DST_ONLY of * the same level are used simultaneously, it is the same case as -- 2.25.1
