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net/sfc: do not use RSS context if it is not required

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RSS action with only one destination queue and no specific settings
for hash types and key does not require dedicated RSS context and
may be simplified to QUEUE action.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
This commit is contained in:
Andrew Rybchenko 2018-04-26 17:48:57 +01:00 committed by Ferruh Yigit
parent ead63dd318
commit 3cefef5491
1 changed files with 11 additions and 0 deletions
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11
drivers/net/sfc/sfc_flow.c
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@ -1295,6 +1295,17 @@ sfc_flow_parse_rss(struct sfc_adapter *sa,
if (action_rss->level)
return -EINVAL;
/*
* Dummy RSS action with only one queue and no specific settings
* for hash types and key does not require dedicated RSS context
* and may be simplified to single queue action.
*/
if (action_rss->queue_num == 1 && action_rss->types == 0 &&
action_rss->key_len == 0) {
flow->spec.template.efs_dmaq_id = rxq_hw_index_min;
return 0;
}
if (action_rss->types) {
int rc;