On Tue, 23 May 2023 16:46:24 +0100 Igor de Paula <[email protected]> wrote:
> Hi, > I am running the DPDK version: 21.08.0 and Ubuntu 20.04.3 LTS. > I have an application that uses KNI to interface with the kernel. > I want to replace it with virtio_user ports as KNI will be deprecated in > the future. > Most of the functionality I am able to replace but there is one thing I am > struggling with. > In KNI we can add functions that will be called in case the network stack > makes a request. The following code shows this: > struct rte_kni *kni; > struct rte_kni_conf conf; > struct rte_kni_ops ops; > struct rte_eth_dev_info dev_info; > int ret; > /* Clear conf at first */ > memset(&conf, 0, sizeof(conf)); > conf.core_id = 0; > memset(&ops, 0, sizeof(ops)); > ops.port_id = ppo->id; > ops.config_promiscusity = ippe_ppo_set_kni_promiscuous_mode; > ops.change_mtu = ippe_ppo_set_kni_mtu; > ops.config_network_if = ippe_ppo_set_kni_interface; > ops.config_mac_address = ippe_ppo_set_kni_mac_address; > kni = rte_kni_alloc(pktmbuf_pool[0], &conf, &ops); > > > And there is a handle_request function supplied by KNI that calls these > functions when need be, > I haven't found any documentation on how to replace this functionality. I > am no expert in how to set up and interact with the kernel stack, Some help > on how to achieve this would be appreciated. If you want to handle changes to kernel network device, then you will have to build a netlink listener that monitors these changes.
