Date: Sun, 2 Feb 2014 11:19:41 -0800 From: hiren panchasara <hiren.panchasara@gmail.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: Errors using span interface on if_bridge(4) Message-ID: <CALCpEUE4V-CXkT3R0tzr1K075RBX_HKHPF%2BP-WTT15FkH5cuQA@mail.gmail.com> In-Reply-To: <CALCpEUFLwZ6vismFKgyo1Q_P4iwzxS%2BjBozTV%2BO1kvap6U8brQ@mail.gmail.com> References: <CALCpEUH7YHhG3gw0wrObsJux=PWmJu2K6_tzCbCfXQ21ENYHdw@mail.gmail.com> <CALCpEUEuXR7_Q8_zt2TjnsOqt_rYMH5do=UEjssqkj684Xdimg@mail.gmail.com> <CALCpEUFLwZ6vismFKgyo1Q_P4iwzxS%2BjBozTV%2BO1kvap6U8brQ@mail.gmail.com>
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On Sat, Feb 1, 2014 at 5:16 PM, hiren panchasara
<hiren.panchasara@gmail.com> wrote:
>
> -bash-4.2$ sysctl -a | grep mac_stats.checksum_errs
> dev.ix.0.mac_stats.checksum_errs: 0
> dev.ix.1.mac_stats.checksum_errs: 0
> dev.ix.2.mac_stats.checksum_errs: 0
> dev.ix.3.mac_stats.checksum_errs: 3371119 <-- most of them fail checksum
In ixgbe.c :
ixgbe_add_hw_stats() has
SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "checksum_errs",
CTLFLAG_RD, &stats->xec,
"Checksum Errors");
which is updated in ixgbe_update_stats_counters()
adapter->stats.xec += IXGBE_READ_REG(hw, IXGBE_XEC);
ixgbe_type.h defines
#define IXGBE_XEC 0x04120
So, this is something that firmware of the card updates? We just read
that register from drivers.
How do I know why this number is increasing?
cheers,
Hiren
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