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Message-ID: <2acbd3e41003261448q26cb19d4w63487894b24f0254@mail.gmail.com> Date: Fri, 26 Mar 2010 16:48:22 -0500 From: Andy Fleming <afleming@...il.com> To: netdev@...r.kernel.org Subject: ICMP echo reply fails For various reasons, we have been running a stress test on one of our boards. The test consists of initiating 2-3 flood pings from a Windows box running Cygwin, plus one additional ping we use as a "heartbeat". The ping flood is overwhelming our board (we're dropping packets at a prodigious rate), but the board continues to respond for a while. In addition, we are running a script on the board which alternates bringing up and bringing down the interface every ten seconds. After a highly variable amount of time, the board stops replying to the pings. We suspected a driver issue, however, on closer inspection, we are still able to send and receive packets (I can ping *from* the board to the PC, and I can *telnet* from the PC to the board). We tried pinging the board from another PC, and it also failed. Essentially, ICMP echo requests are being ignored (A glance at memory indicates that packets are arriving, but no packets are being enqueued to the ethernet controller). We still have a lot more debugging to do, but I was wondering if anyone had ever seen something like this, or might be quicker to realize the obvious mistake we're making. Thanks, Andy Fleming -- 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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