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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH v2 15/15] net: invoke qemu_can_send_packet only before net queue sending function |
Date: | Thu, 24 May 2012 14:02:26 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 |
Il 24/05/2012 13:58, Zhi Yong Wu ha scritto: >> > But you will copy packets uselessly. The code before the patch simply >> > left them on the tap file descriptor. This is better because it >> > involves the kernel in flow control. You are introducing "bufferbloat". > You are correct, but can_send_packet will be invoked twice for one > packet delivery. Doesn't matter, it's cheap. Paolo
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