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Open Source and information security mailing list archives
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Date: Thu, 12 Apr 2007 16:28:37 -0700 From: Roland Dreier <rdreier@...co.com> To: CaT <cat@....com.au> Cc: Michael Chan <mchan@...adcom.com>, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: intermittant petabyte usage reported with broadcom nic [Adding Michael Chan, who seems to look after bnx2, to the cc list] > To clarify it's an Intel Dual Core Xeon (I just wound up as thinking of > them all as amd64s). Network card driver in use is the one defined by > CONFIG_BNX2. Kernel's monolithic. >From a quick look at bnx2.c, it seems that the driver gives the NIC (firmware?) a block of memory to DMA stats into, and just reads from that memory in its get_stats method. So if you're seeing wonky stats from the NIC intermittently, my best guess would be that firmware is occasionally writing junk into the stats block. - R. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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