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394 lines
9.4 KiB
394 lines
9.4 KiB
/* |
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* Copyright (C) 2017 Netronome Systems, Inc. |
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* |
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* This software is licensed under the GNU General License Version 2, |
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* June 1991 as shown in the file COPYING in the top-level directory of this |
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* source tree. |
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* |
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* THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" |
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE |
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* OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME |
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* THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
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*/ |
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#include <linux/debugfs.h> |
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#include <linux/etherdevice.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/netdevice.h> |
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#include <linux/slab.h> |
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#include <net/netlink.h> |
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#include <net/pkt_cls.h> |
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#include <net/rtnetlink.h> |
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#include <net/udp_tunnel.h> |
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#include "netdevsim.h" |
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static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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if (!nsim_ipsec_tx(ns, skb)) |
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goto out; |
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u64_stats_update_begin(&ns->syncp); |
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ns->tx_packets++; |
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ns->tx_bytes += skb->len; |
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u64_stats_update_end(&ns->syncp); |
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out: |
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dev_kfree_skb(skb); |
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return NETDEV_TX_OK; |
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} |
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static void nsim_set_rx_mode(struct net_device *dev) |
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{ |
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} |
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static int nsim_change_mtu(struct net_device *dev, int new_mtu) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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if (ns->xdp.prog && new_mtu > NSIM_XDP_MAX_MTU) |
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return -EBUSY; |
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dev->mtu = new_mtu; |
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return 0; |
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} |
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static void |
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nsim_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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unsigned int start; |
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do { |
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start = u64_stats_fetch_begin(&ns->syncp); |
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stats->tx_bytes = ns->tx_bytes; |
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stats->tx_packets = ns->tx_packets; |
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} while (u64_stats_fetch_retry(&ns->syncp, start)); |
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} |
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static int |
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nsim_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv) |
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{ |
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return nsim_bpf_setup_tc_block_cb(type, type_data, cb_priv); |
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} |
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static int nsim_set_vf_mac(struct net_device *dev, int vf, u8 *mac) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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/* Only refuse multicast addresses, zero address can mean unset/any. */ |
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if (vf >= nsim_bus_dev->num_vfs || is_multicast_ether_addr(mac)) |
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return -EINVAL; |
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memcpy(nsim_bus_dev->vfconfigs[vf].vf_mac, mac, ETH_ALEN); |
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return 0; |
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} |
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static int nsim_set_vf_vlan(struct net_device *dev, int vf, |
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u16 vlan, u8 qos, __be16 vlan_proto) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs || vlan > 4095 || qos > 7) |
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return -EINVAL; |
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nsim_bus_dev->vfconfigs[vf].vlan = vlan; |
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nsim_bus_dev->vfconfigs[vf].qos = qos; |
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nsim_bus_dev->vfconfigs[vf].vlan_proto = vlan_proto; |
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return 0; |
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} |
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static int nsim_set_vf_rate(struct net_device *dev, int vf, int min, int max) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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nsim_bus_dev->vfconfigs[vf].min_tx_rate = min; |
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nsim_bus_dev->vfconfigs[vf].max_tx_rate = max; |
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return 0; |
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} |
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static int nsim_set_vf_spoofchk(struct net_device *dev, int vf, bool val) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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nsim_bus_dev->vfconfigs[vf].spoofchk_enabled = val; |
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return 0; |
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} |
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static int nsim_set_vf_rss_query_en(struct net_device *dev, int vf, bool val) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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nsim_bus_dev->vfconfigs[vf].rss_query_enabled = val; |
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return 0; |
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} |
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static int nsim_set_vf_trust(struct net_device *dev, int vf, bool val) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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nsim_bus_dev->vfconfigs[vf].trusted = val; |
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return 0; |
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} |
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static int |
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nsim_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivi) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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ivi->vf = vf; |
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ivi->linkstate = nsim_bus_dev->vfconfigs[vf].link_state; |
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ivi->min_tx_rate = nsim_bus_dev->vfconfigs[vf].min_tx_rate; |
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ivi->max_tx_rate = nsim_bus_dev->vfconfigs[vf].max_tx_rate; |
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ivi->vlan = nsim_bus_dev->vfconfigs[vf].vlan; |
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ivi->vlan_proto = nsim_bus_dev->vfconfigs[vf].vlan_proto; |
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ivi->qos = nsim_bus_dev->vfconfigs[vf].qos; |
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memcpy(&ivi->mac, nsim_bus_dev->vfconfigs[vf].vf_mac, ETH_ALEN); |
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ivi->spoofchk = nsim_bus_dev->vfconfigs[vf].spoofchk_enabled; |
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ivi->trusted = nsim_bus_dev->vfconfigs[vf].trusted; |
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ivi->rss_query_en = nsim_bus_dev->vfconfigs[vf].rss_query_enabled; |
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return 0; |
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} |
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static int nsim_set_vf_link_state(struct net_device *dev, int vf, int state) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev; |
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if (vf >= nsim_bus_dev->num_vfs) |
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return -EINVAL; |
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switch (state) { |
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case IFLA_VF_LINK_STATE_AUTO: |
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case IFLA_VF_LINK_STATE_ENABLE: |
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case IFLA_VF_LINK_STATE_DISABLE: |
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break; |
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default: |
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return -EINVAL; |
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} |
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nsim_bus_dev->vfconfigs[vf].link_state = state; |
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return 0; |
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} |
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static LIST_HEAD(nsim_block_cb_list); |
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static int |
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nsim_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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switch (type) { |
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case TC_SETUP_BLOCK: |
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return flow_block_cb_setup_simple(type_data, |
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&nsim_block_cb_list, |
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nsim_setup_tc_block_cb, |
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ns, ns, true); |
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default: |
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return -EOPNOTSUPP; |
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} |
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} |
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static int |
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nsim_set_features(struct net_device *dev, netdev_features_t features) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC)) |
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return nsim_bpf_disable_tc(ns); |
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return 0; |
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} |
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static struct devlink_port *nsim_get_devlink_port(struct net_device *dev) |
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{ |
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struct netdevsim *ns = netdev_priv(dev); |
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return &ns->nsim_dev_port->devlink_port; |
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} |
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static const struct net_device_ops nsim_netdev_ops = { |
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.ndo_start_xmit = nsim_start_xmit, |
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.ndo_set_rx_mode = nsim_set_rx_mode, |
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.ndo_set_mac_address = eth_mac_addr, |
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.ndo_validate_addr = eth_validate_addr, |
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.ndo_change_mtu = nsim_change_mtu, |
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.ndo_get_stats64 = nsim_get_stats64, |
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.ndo_set_vf_mac = nsim_set_vf_mac, |
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.ndo_set_vf_vlan = nsim_set_vf_vlan, |
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.ndo_set_vf_rate = nsim_set_vf_rate, |
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.ndo_set_vf_spoofchk = nsim_set_vf_spoofchk, |
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.ndo_set_vf_trust = nsim_set_vf_trust, |
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.ndo_get_vf_config = nsim_get_vf_config, |
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.ndo_set_vf_link_state = nsim_set_vf_link_state, |
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.ndo_set_vf_rss_query_en = nsim_set_vf_rss_query_en, |
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.ndo_setup_tc = nsim_setup_tc, |
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.ndo_set_features = nsim_set_features, |
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.ndo_bpf = nsim_bpf, |
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.ndo_get_devlink_port = nsim_get_devlink_port, |
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}; |
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static void nsim_setup(struct net_device *dev) |
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{ |
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ether_setup(dev); |
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eth_hw_addr_random(dev); |
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dev->tx_queue_len = 0; |
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dev->flags |= IFF_NOARP; |
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dev->flags &= ~IFF_MULTICAST; |
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dev->priv_flags |= IFF_LIVE_ADDR_CHANGE | |
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IFF_NO_QUEUE; |
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dev->features |= NETIF_F_HIGHDMA | |
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NETIF_F_SG | |
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NETIF_F_FRAGLIST | |
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NETIF_F_HW_CSUM | |
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NETIF_F_TSO; |
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dev->hw_features |= NETIF_F_HW_TC; |
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dev->max_mtu = ETH_MAX_MTU; |
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} |
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struct netdevsim * |
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nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port) |
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{ |
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struct net_device *dev; |
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struct netdevsim *ns; |
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int err; |
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dev = alloc_netdev(sizeof(*ns), "eth%d", NET_NAME_UNKNOWN, nsim_setup); |
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if (!dev) |
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return ERR_PTR(-ENOMEM); |
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dev_net_set(dev, nsim_dev_net(nsim_dev)); |
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ns = netdev_priv(dev); |
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ns->netdev = dev; |
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u64_stats_init(&ns->syncp); |
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ns->nsim_dev = nsim_dev; |
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ns->nsim_dev_port = nsim_dev_port; |
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ns->nsim_bus_dev = nsim_dev->nsim_bus_dev; |
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SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev); |
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dev->netdev_ops = &nsim_netdev_ops; |
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nsim_ethtool_init(ns); |
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err = nsim_udp_tunnels_info_create(nsim_dev, dev); |
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if (err) |
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goto err_free_netdev; |
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rtnl_lock(); |
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err = nsim_bpf_init(ns); |
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if (err) |
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goto err_utn_destroy; |
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nsim_ipsec_init(ns); |
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err = register_netdevice(dev); |
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if (err) |
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goto err_ipsec_teardown; |
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rtnl_unlock(); |
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return ns; |
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err_ipsec_teardown: |
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nsim_ipsec_teardown(ns); |
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nsim_bpf_uninit(ns); |
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err_utn_destroy: |
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rtnl_unlock(); |
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nsim_udp_tunnels_info_destroy(dev); |
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err_free_netdev: |
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free_netdev(dev); |
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return ERR_PTR(err); |
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} |
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void nsim_destroy(struct netdevsim *ns) |
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{ |
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struct net_device *dev = ns->netdev; |
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rtnl_lock(); |
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unregister_netdevice(dev); |
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nsim_ipsec_teardown(ns); |
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nsim_bpf_uninit(ns); |
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rtnl_unlock(); |
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nsim_udp_tunnels_info_destroy(dev); |
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free_netdev(dev); |
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} |
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static int nsim_validate(struct nlattr *tb[], struct nlattr *data[], |
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struct netlink_ext_ack *extack) |
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{ |
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NL_SET_ERR_MSG_MOD(extack, "Please use: echo \"[ID] [PORT_COUNT]\" > /sys/bus/netdevsim/new_device"); |
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return -EOPNOTSUPP; |
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} |
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static struct rtnl_link_ops nsim_link_ops __read_mostly = { |
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.kind = DRV_NAME, |
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.validate = nsim_validate, |
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}; |
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static int __init nsim_module_init(void) |
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{ |
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int err; |
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err = nsim_dev_init(); |
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if (err) |
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return err; |
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err = nsim_bus_init(); |
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if (err) |
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goto err_dev_exit; |
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err = rtnl_link_register(&nsim_link_ops); |
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if (err) |
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goto err_bus_exit; |
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return 0; |
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err_bus_exit: |
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nsim_bus_exit(); |
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err_dev_exit: |
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nsim_dev_exit(); |
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return err; |
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} |
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static void __exit nsim_module_exit(void) |
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{ |
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rtnl_link_unregister(&nsim_link_ops); |
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nsim_bus_exit(); |
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nsim_dev_exit(); |
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} |
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module_init(nsim_module_init); |
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module_exit(nsim_module_exit); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS_RTNL_LINK(DRV_NAME);
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