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To: Lee Daly <lee.daly@intel.com>, thomas@monjalon.net
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 <20171012133128.51056-1-lee.daly@intel.com>
From: Ferruh Yigit <ferruh.yigit@intel.com>
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Date: Thu, 12 Oct 2017 20:42:48 +0100
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Subject: Re: [dpdk-dev] [PATCH v2] ethdev: fix xstats retrieve by id API
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On 10/12/2017 2:31 PM, Lee Daly wrote:
> From: Lee <lee.daly@intel.com>
> 
> Fix xstats functions, rte_eth_xstats_get_names_by_id()
> and rte_eth_xstats_get_by_id(), in current implementation
> ethdev level reads all xstat values and filters out
> the ones requested by the application. This behavior doesn't
> benefit from PMD ops and doesn't provide the benefit the
> API was created in the first place for. APIs are also unnecessarily
> complicated. Both APIs have different returns for the same params.
> 
> In this fix, instead of reading all the stats and finding the
> requested value, drivers can provide ops to get selected xstats.
> API no longer crashes with certain params,
> 
> rte_eth_get_by_id returned seg fault with
> "ids = NULL && values != NULL && n<max”
> rte_eth_get_names_by_id returned seg fault with
> "ids = NULL && values != NULL && n=0”
> These now return max number of stats available, matching the other API.
> 
> rte_eth_get_by_id returned seg fault with
> "ids != NULL && values = NULL && n<max”
> This now returns -22,(EINVAL).
> 
> Standardized variable/parameter names between the 2 APIs.
> 
> Overall code complexity reduced.
> 
> Fixes: 79c913a42f0e ("ethdev: retrieve xstats by ID")
> Cc: kubax.kozak@intel.com
> 
> Signed-off-by: Lee Daly <lee.daly@intel.com>
> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

Applied to dpdk-next-net/master, thanks.

Welcome Lee!