From: Ajit Khaparde <[email protected]> Sent: Saturday, August 8, 2020 8:10 PM To: Kiran Kumar Kokkilagadda <[email protected]> Cc: Andrew Rybchenko <[email protected]>; Ferruh Yigit <[email protected]>; Thomas Monjalon <[email protected]>; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; Jerin Jacob Kollanukkaran <[email protected]>; [email protected]; [email protected]; [email protected]; [email protected]; Liron Himi <[email protected]>; [email protected]; Nithin Kumar Dabilpuram <[email protected]>; [email protected]; [email protected]; [email protected]; [email protected]; Rasesh Mody <[email protected]>; [email protected]; [email protected]; [email protected]; Shahed Shaikh <[email protected]>; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Subject: [EXT] Re: [dpdk-dev][PATCH v2 1/2] ethdev: add level support for RSS offload types
External Email ________________________________ On Sat, Aug 8, 2020 at 7:36 AM <[email protected]<mailto:[email protected]>> wrote: From: Kiran Kumar K <[email protected]<mailto:[email protected]>> This patch reserves 2 bits as input selection to select Inner and outer layers for RSS computation. It is combined with existing ETH_RSS_* to choose Inner or outer layers for L2, L3 and L4. How do you plan to use this? Do you need to make any changes to testpmd? I will update in the next version. 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]<mailto:[email protected]>> --- v2 changes: * Reserved bit 50 & 51 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 d29930fd8..28184cc85 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. + * Note: Default is 0: inner layers, 1: outer layers, 2: both + * bit 50 and 51 are reserved for this. + */ + +/** + * Level 0, It basically stands for the innermost encapsulation level RSS + * can be performed on according to PMD and device capabilities. + */ +#define ETH_RSS_LEVEL_INNER (0ULL << 50) +/** + * Level 1, It basically stands for the outermost encapsulation level RSS + * can be performed on according to PMD and device capabilities. + */ +#define ETH_RSS_LEVEL_OUTER (1ULL << 50) +/** + * Level 2, It basically stands for the both inner and outermost + * encapsulation level RSS can be performed on according to PMD and + * device capabilities. + */ +#define ETH_RSS_LEVEL_INNER_OUTER (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
