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ethdev: support encapsulation level for RSS offload

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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 <kirankumark@marvell.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Kiran Kumar K 2020-09-17 07:37:33 +05:30 committed by Ferruh Yigit
parent 976277f9ce
commit 333a38bb2e
1 changed files with 30 additions and 0 deletions
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30
lib/librte_ethdev/rte_ethdev.h
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@ -553,6 +553,36 @@ struct rte_eth_rss_conf {
#define RTE_ETH_RSS_L3_PRE64 (1ULL << 53)
#define RTE_ETH_RSS_L3_PRE96 (1ULL << 52)
/*
* Use the following macros to combine with the above layers
* to choose inner and outer layers or both for RSS computation.
* Bits 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_PMD_DEFAULT (0ULL << 50)
/**
* level 1, requests RSS to be performed on the outermost packet
* encapsulation level.
*/
#define ETH_RSS_LEVEL_OUTERMOST (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_INNERMOST (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