Date: Tue, 3 Jan 2017 15:34:24 -0600 From: Xiaoye Sun <Xiaoye.Sun@rice.edu> To: FreeBSD Net <freebsd-net@freebsd.org> Subject: Way to let the host/nic ignore the NIC queue attached to netmap Message-ID: <CAJnByzhTdsWobP15A26eaAMFQQJJS9ZH9ub%2B0rE2vOM6-7MS%2BA@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Hi, In my application, I take one pair of NIC queue (both tx and rx) for sending and receiving packets in the netmap userspace program to process a specific type of packets. There are also other packets from/to the host. In such case, It seems that I need to open the host queue in my netmap application and forward all the packets from the host rx queue to the nic tx queue. The application also needs to filter the irrelevant packets from the nic rx queue and forward them to the host tx queue. I am wondering if it is possible to make the kernel ignore the tx queue attached to netmap application and never forward packets to that tx queue so that the netmap application never needs to open the host queue in such use case. It seems that the problem on the receive side can be addressed by assigning 0 weight to queue attached to the netmap in the indirection table using the ethtool -x eth weight command. Does the send side has a similar trick? Best, Xiaoye
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJnByzhTdsWobP15A26eaAMFQQJJS9ZH9ub%2B0rE2vOM6-7MS%2BA>