Date: Sat, 7 Feb 2015 08:29:32 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Simone Lombardo <evil.lombo@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: HTTPS/TLS issue on a NDIS wrapped NIC Message-ID: <CAJ-Vmo=ggjvGPYqN5QS-cYF5zdLHMZixp7xXunDCE3s8xp2fmQ@mail.gmail.com> In-Reply-To: <CALnnSEivExhv=v5jJ3xxFmJANCQs9Y%2BB7LFyEPeA1wtjk1zJwA@mail.gmail.com> References: <CALnnSEivExhv=v5jJ3xxFmJANCQs9Y%2BB7LFyEPeA1wtjk1zJwA@mail.gmail.com>
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Hi, Yeah - the fpu context saving stuff in the kernel, perhaps? -adrian On 7 February 2015 at 06:05, Simone Lombardo <evil.lombo@gmail.com> wrote: > Hi, > > I am currently facing an issue and I don't know how to investigate and > address it. > > I am currently using the release FreeBSD 10.1 on a laptop having a > RTL8188CE chipset as wireless chipset. Native driver is not avaiable so I > am using the NDIS 5.1 driver via the NDIS wrapper. > > The wrapper is working fine for most application protocols, except when > using HTTPS/TLS on browsers. In this case, the following situations arise: > - Sistematically, HTTPS/TLS communication near immediately fails when > trying to upload a binary file (e.g. an image on a image hosting site). > Monitoring via tcpdump/wireshark shows encrypted alerts (21) and the > connection is reset by the remote peer. Since the first point is recurring, > I am going to setup a test web server in order to decrypt the payload and > read the encrypted alert. > > - Randomly, HTTPS/TLS communication enter in a retrasmission loop, stalling > all other HTTPS/TLS connections. Monitor via tcpdump/wireshark shows high > density of duplicate ACKs and after a while the TCP stack initiate a > retransmission keeping the connection stalled until the remote host does > not reset the connection and the buffers are flushed. > > The issue is not present when using an usb wireless dongle or the bundled > wired card where native driver is avaiable, so it seems specific to ndis > wrapper, though I have no other wireless cards to try atm. Tried to tune > tcp settings via sysctl, but I have not gain results yet. > > Any indications or hints on where I should look to discover the origin of > the issue (especially for the second point), is greatly appreciated. > > Best regards, > > Simone > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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