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Tony Nguyen says: ==================== ice: use less resources in switchdev Michal Swiatkowski says: Switchdev is using one queue per created port representor. This can quickly lead to Rx queue shortage, as with subfunction support user can create high number of PRs. Save one MSI-X and 'number of PRs' * 1 queues. Refactor switchdev slow-path to use less resources (even no additional resources). Do this by removing control plane VSI and move its functionality to PF VSI. Even with current solution PF is acting like uplink and can't be used simultaneously for other use cases (adding filters can break slow-path). In short, do Tx via PF VSI and Rx packets using PF resources. Rx needs additional code in interrupt handler to choose correct PR netdev. Previous solution had to queue filters, it was way more elegant but needed one queue per PRs. Beside that this refactor mostly simplifies switchdev configuration. * '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue: ice: count representor stats ice: do switchdev slow-path Rx using PF VSI ice: change repr::id values ice: remove switchdev control plane VSI ice: control default Tx rule in lag ice: default Tx rule instead of to queue ice: do Tx through PF netdev in slow-path ice: remove eswitch changing queues algorithm ==================== Link: https://lore.kernel.org/r/20240325202623.1012287-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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