Date: Thu, 5 Dec 2013 14:01:38 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Michael Tuexen <Michael.Tuexen@lurchi.franken.de> Cc: Yong-Hyeon Pyun <pyunyh@gmail.com>, Jack F Vogel <jfv@freebsd.org>, "freebsd-net@freebsd.org list" <freebsd-net@freebsd.org> Subject: Re: A small fix for if_em.c, if_igb.c, if_ixgbe.c Message-ID: <CAJ-Vmo=4Zwv5V6ZYDuDLtt%2BowgbvmqyvrnrfnU%2BHeXQ3vAn-KA@mail.gmail.com> In-Reply-To: <B89B1E2D-BAF0-4815-B3AB-EB226F4F76DE@lurchi.franken.de> References: <521B9C2A-EECC-4412-9F68-2235320EF324@lurchi.franken.de> <20131202022338.GA3500@michelle.cdnetworks.com> <B9593E83-E687-49E9-ABDC-B2DD615180E9@lurchi.franken.de> <20131203021658.GC2981@michelle.cdnetworks.com> <CAJ-Vmo=kfoPMYjZ0WAtqmoJMz1utXH50SW9N92RA83EMUzY7WA@mail.gmail.com> <B89B1E2D-BAF0-4815-B3AB-EB226F4F76DE@lurchi.franken.de>
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On 5 December 2013 13:05, Michael Tuexen <Michael.Tuexen@lurchi.franken.de> wrote: > Just to be clear: This would mean that xxx_transmit() would return > an error even if the packet provided in the call xxx_transmit() is > enqueued and not dropped? > This would also be problem with the current SCTP stack. I think it'll return an error only if: * it queued the frame to the tail of the drbd; * it then tried to transmit a frame from the head of the drbd; * it failed to transmit the first frame in the drbd and it couldn't put it back into the queue for whatever reason. So I think it should be "ok enough" for both TCP and SCTP. Give it a go and let me know how it goes. It's an interesting architectural problem to completely solve. -adrian
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