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Re: [RFC PATCH 1/7] PF driver modified to enable HW filter support, changes works in backward compatibility mode Enable required things in Makefile Enable LZ4 dependecy inside config file

From Sunil Kovvuri <sunil.kovvuri@gmail.com>
Newsgroups linux.kernel
Subject Re: [RFC PATCH 1/7] PF driver modified to enable HW filter support, changes works in backward compatibility mode Enable required things in Makefile Enable LZ4 dependecy inside config file
Date 2016-12-21 14:10 +0100
Message-ID <sQOOE-3SW-89@gated-at.bofh.it> (permalink)
References <sQNSy-3fG-25@gated-at.bofh.it> <sQOOE-3SW-91@gated-at.bofh.it>
Organization linux.* mail to news gateway

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>
>  #define NIC_MAX_RSS_HASH_BITS          8
>  #define NIC_MAX_RSS_IDR_TBL_SIZE       (1 << NIC_MAX_RSS_HASH_BITS)
> +#define NIC_TNS_RSS_IDR_TBL_SIZE       5

So you want to use only 5 queues per VF when TNS is enabled, is it ??
There are 4096 RSS indices in total, for each VF you can use max 32.
I guess you wanted to set no of hash bits to 5 instead of table size.

>  #define RSS_HASH_KEY_SIZE              5 /* 320 bit key */
>
>  struct nicvf_rss_info {
> @@ -255,74 +258,6 @@ struct nicvf_drv_stats {
>         struct u64_stats_sync   syncp;
>  };
>
> -struct nicvf {
> -       struct nicvf            *pnicvf;
> -       struct net_device       *netdev;
> -       struct pci_dev          *pdev;
> -       void __iomem            *reg_base;

Didn't get why you moved this structure to the end of file.
Looks like an unnecessary modification.


> +static unsigned int num_vfs;
> +module_param(num_vfs, uint, 0644);
> +MODULE_PARM_DESC(num_vfs, "Non zero positive value, specifies number of VF's per physical port");

So what if driver is built-in instead of module, I can't use TNS is it ?

>
> +/* Set RBDR Backpressure (RBDR_BP) and CQ backpressure (CQ_BP) of vnic queues
> + * to 129 each

Why 129 ??
RBDR minimum size is 8K buffers, why you want to assert BP when still
~4K buffers
are available. Isn't 4K a huge number to start asserting backpressure ?

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Re: [RFC PATCH 1/7] PF driver modified to enable HW filter support,  changes works in backward compatibility mode Enable required things in  Makefile Enable LZ4 dependecy inside config file Sunil Kovvuri <sunil.kovvuri@gmail.com> - 2016-12-21 14:10 +0100
  RE: [RFC PATCH 1/7] PF driver modified to enable HW filter support,  changes works in backward compatibility mode Enable required things in  Makefile Enable LZ4 dependecy inside config file "Koteshwar Rao, Satha" <Satha.Rao@cavium.com> - 2016-12-26 15:30 +0100
    Re: [RFC PATCH 1/7] PF driver modified to enable HW filter support,  changes works in backward compatibility mode Enable required things in  Makefile Enable LZ4 dependecy inside config file Sunil Kovvuri <sunil.kovvuri@gmail.com> - 2016-12-27 05:30 +0100

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