static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct rtattr **rta = arg; struct net_device *dev; struct in_device *in_dev; struct ifaddrmsg *ifm = NLMSG_DATA(nlh); struct in_ifaddr *ifa; int rc = -EINVAL; ASSERT_RTNL(); if (ifm->ifa_prefixlen > 32 || !rta[IFA_LOCAL - 1]) goto out; rc = -ENODEV; if ((dev = __dev_get_by_index(ifm->ifa_index)) == NULL) goto out; rc = -ENOBUFS; if ((in_dev = __in_dev_get(dev)) == NULL) { in_dev = inetdev_init(dev); if (!in_dev) goto out; } if ((ifa = inet_alloc_ifa()) == NULL) goto out; if (!rta[IFA_ADDRESS - 1]) rta[IFA_ADDRESS - 1] = rta[IFA_LOCAL - 1]; memcpy(&ifa->ifa_local, RTA_DATA(rta[IFA_LOCAL - 1]), 4); memcpy(&ifa->ifa_address, RTA_DATA(rta[IFA_ADDRESS - 1]), 4); ifa->ifa_prefixlen = ifm->ifa_prefixlen; ifa->ifa_mask = inet_make_mask(ifm->ifa_prefixlen); if (rta[IFA_BROADCAST - 1]) memcpy(&ifa->ifa_broadcast, RTA_DATA(rta[IFA_BROADCAST - 1]), 4); if (rta[IFA_ANYCAST - 1]) memcpy(&ifa->ifa_anycast, RTA_DATA(rta[IFA_ANYCAST - 1]), 4); ifa->ifa_flags = ifm->ifa_flags; ifa->ifa_scope = ifm->ifa_scope; in_dev_hold(in_dev); ifa->ifa_dev = in_dev; if (rta[IFA_LABEL - 1]) rtattr_strlcpy(ifa->ifa_label, rta[IFA_LABEL - 1], IFNAMSIZ); else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); rc = inet_insert_ifa(ifa); out: return rc; }
static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg) { struct rtattr **tca; struct tcmsg *t; u32 protocol; u32 prio; u32 nprio; u32 parent; struct net_device *dev; struct Qdisc *q; struct tcf_proto **back, **chain; struct tcf_proto *tp; struct tcf_proto_ops *tp_ops; struct Qdisc_class_ops *cops; unsigned long cl; unsigned long fh; int err; replay: tca = arg; t = NLMSG_DATA(n); protocol = TC_H_MIN(t->tcm_info); prio = TC_H_MAJ(t->tcm_info); nprio = prio; parent = t->tcm_parent; cl = 0; if (prio == 0) { /* If no priority is given, user wants we allocated it. */ if (n->nlmsg_type != RTM_NEWTFILTER || !(n->nlmsg_flags&NLM_F_CREATE)) return -ENOENT; prio = TC_H_MAKE(0x80000000U,0U); } /* Find head of filter chain. */ /* Find link */ if ((dev = __dev_get_by_index(t->tcm_ifindex)) == NULL) return -ENODEV; /* Find qdisc */ if (!parent) { q = dev->qdisc_sleeping; parent = q->handle; } else if ((q = qdisc_lookup(dev, TC_H_MAJ(t->tcm_parent))) == NULL) return -EINVAL; /* Is it classful? */ if ((cops = q->ops->cl_ops) == NULL) return -EINVAL; /* Do we search for filter, attached to class? */ if (TC_H_MIN(parent)) { cl = cops->get(q, parent); if (cl == 0) return -ENOENT; } /* And the last stroke */ chain = cops->tcf_chain(q, cl); err = -EINVAL; if (chain == NULL) goto errout; /* Check the chain for existence of proto-tcf with this priority */ for (back = chain; (tp=*back) != NULL; back = &tp->next) { if (tp->prio >= prio) { if (tp->prio == prio) { if (!nprio || (tp->protocol != protocol && protocol)) goto errout; } else tp = NULL; break; } } if (tp == NULL) { /* Proto-tcf does not exist, create new one */ if (tca[TCA_KIND-1] == NULL || !protocol) goto errout; err = -ENOENT; if (n->nlmsg_type != RTM_NEWTFILTER || !(n->nlmsg_flags&NLM_F_CREATE)) goto errout; /* Create new proto tcf */ err = -ENOBUFS; if ((tp = kmalloc(sizeof(*tp), GFP_KERNEL)) == NULL) goto errout; err = -EINVAL; tp_ops = tcf_proto_lookup_ops(tca[TCA_KIND-1]); if (tp_ops == NULL) { #ifdef CONFIG_KMOD struct rtattr *kind = tca[TCA_KIND-1]; char name[IFNAMSIZ]; if (kind != NULL && rtattr_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) { rtnl_unlock(); request_module("cls_%s", name); rtnl_lock(); tp_ops = tcf_proto_lookup_ops(kind); /* We dropped the RTNL semaphore in order to * perform the module load. So, even if we * succeeded in loading the module we have to * replay the request. We indicate this using * -EAGAIN. */ if (tp_ops != NULL) { module_put(tp_ops->owner); err = -EAGAIN; } } #endif kfree(tp); goto errout; } memset(tp, 0, sizeof(*tp)); tp->ops = tp_ops; tp->protocol = protocol; tp->prio = nprio ? : tcf_auto_prio(*back); tp->q = q; tp->classify = tp_ops->classify; tp->classid = parent; if ((err = tp_ops->init(tp)) != 0) { module_put(tp_ops->owner); kfree(tp); goto errout; } qdisc_lock_tree(dev); tp->next = *back; *back = tp; qdisc_unlock_tree(dev); } else if (tca[TCA_KIND-1] && rtattr_strcmp(tca[TCA_KIND-1], tp->ops->kind))
static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct ifinfomsg *ifm = NLMSG_DATA(nlh); struct rtattr **ida = arg; struct net_device *dev; int err, send_addr_notify = 0; if (ifm->ifi_index >= 0) dev = dev_get_by_index(ifm->ifi_index); else if (ida[IFLA_IFNAME - 1]) { char ifname[IFNAMSIZ]; if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1], IFNAMSIZ) >= IFNAMSIZ) return -EINVAL; dev = dev_get_by_name(ifname); } else return -EINVAL; if (!dev) return -ENODEV; err = -EINVAL; if (ifm->ifi_flags) dev_change_flags(dev, ifm->ifi_flags); if (ida[IFLA_MAP - 1]) { struct rtnl_link_ifmap *u_map; struct ifmap k_map; if (!dev->set_config) { err = -EOPNOTSUPP; goto out; } if (!netif_device_present(dev)) { err = -ENODEV; goto out; } if (ida[IFLA_MAP - 1]->rta_len != RTA_LENGTH(sizeof(*u_map))) goto out; u_map = RTA_DATA(ida[IFLA_MAP - 1]); k_map.mem_start = (unsigned long) u_map->mem_start; k_map.mem_end = (unsigned long) u_map->mem_end; k_map.base_addr = (unsigned short) u_map->base_addr; k_map.irq = (unsigned char) u_map->irq; k_map.dma = (unsigned char) u_map->dma; k_map.port = (unsigned char) u_map->port; err = dev->set_config(dev, &k_map); if (err) goto out; } if (ida[IFLA_ADDRESS - 1]) { if (!dev->set_mac_address) { err = -EOPNOTSUPP; goto out; } if (!netif_device_present(dev)) { err = -ENODEV; goto out; } if (ida[IFLA_ADDRESS - 1]->rta_len != RTA_LENGTH(dev->addr_len)) goto out; err = dev->set_mac_address(dev, RTA_DATA(ida[IFLA_ADDRESS - 1])); if (err) goto out; send_addr_notify = 1; } if (ida[IFLA_BROADCAST - 1]) { if (ida[IFLA_BROADCAST - 1]->rta_len != RTA_LENGTH(dev->addr_len)) goto out; memcpy(dev->broadcast, RTA_DATA(ida[IFLA_BROADCAST - 1]), dev->addr_len); send_addr_notify = 1; } if (ida[IFLA_MTU - 1]) { if (ida[IFLA_MTU - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; err = dev_set_mtu(dev, *((u32 *) RTA_DATA(ida[IFLA_MTU - 1]))); if (err) goto out; } if (ida[IFLA_TXQLEN - 1]) { if (ida[IFLA_TXQLEN - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; dev->tx_queue_len = *((u32 *) RTA_DATA(ida[IFLA_TXQLEN - 1])); } if (ida[IFLA_WEIGHT - 1]) { if (ida[IFLA_WEIGHT - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; dev->weight = *((u32 *) RTA_DATA(ida[IFLA_WEIGHT - 1])); } if (ifm->ifi_index >= 0 && ida[IFLA_IFNAME - 1]) { char ifname[IFNAMSIZ]; if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1], IFNAMSIZ) >= IFNAMSIZ) goto out; err = dev_change_name(dev, ifname); if (err) goto out; } err = 0; out: if (send_addr_notify) call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); dev_put(dev); return err; }
static int tcf_ipt_init(struct rtattr *rta, struct rtattr *est, struct tc_action *a, int ovr, int bind) { struct rtattr *tb[TCA_IPT_MAX]; struct tcf_ipt *p; struct ipt_entry_target *td, *t; char *tname; int ret = 0, err; u32 hook = 0; u32 index = 0; if (rta == NULL || rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0) return -EINVAL; if (tb[TCA_IPT_HOOK-1] == NULL || RTA_PAYLOAD(tb[TCA_IPT_HOOK-1]) < sizeof(u32)) return -EINVAL; if (tb[TCA_IPT_TARG-1] == NULL || RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < sizeof(*t)) return -EINVAL; td = (struct ipt_entry_target *)RTA_DATA(tb[TCA_IPT_TARG-1]); if (RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < td->u.target_size) return -EINVAL; if (tb[TCA_IPT_INDEX-1] != NULL && RTA_PAYLOAD(tb[TCA_IPT_INDEX-1]) >= sizeof(u32)) index = *(u32 *)RTA_DATA(tb[TCA_IPT_INDEX-1]); p = tcf_hash_check(index, a, ovr, bind); if (p == NULL) { p = tcf_hash_create(index, est, a, sizeof(*p), ovr, bind); if (p == NULL) return -ENOMEM; ret = ACT_P_CREATED; } else { if (!ovr) { tcf_ipt_release(p, bind); return -EEXIST; } } hook = *(u32 *)RTA_DATA(tb[TCA_IPT_HOOK-1]); err = -ENOMEM; tname = kmalloc(IFNAMSIZ, GFP_KERNEL); if (tname == NULL) goto err1; if (tb[TCA_IPT_TABLE - 1] == NULL || rtattr_strlcpy(tname, tb[TCA_IPT_TABLE-1], IFNAMSIZ) >= IFNAMSIZ) strcpy(tname, "mangle"); t = kmalloc(td->u.target_size, GFP_KERNEL); if (t == NULL) goto err2; memcpy(t, td, td->u.target_size); if ((err = ipt_init_target(t, tname, hook)) < 0) goto err3; spin_lock_bh(&p->lock); if (ret != ACT_P_CREATED) { ipt_destroy_target(p->t); kfree(p->tname); kfree(p->t); } p->tname = tname; p->t = t; p->hook = hook; spin_unlock_bh(&p->lock); if (ret == ACT_P_CREATED) tcf_hash_insert(p); return ret; err3: kfree(t); err2: kfree(tname); err1: kfree(p); return err; }
struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *name, int ovr, int bind, int *err) { struct tc_action *a; struct tc_action_ops *a_o; char act_name[IFNAMSIZ]; struct rtattr *tb[TCA_ACT_MAX+1]; struct rtattr *kind; *err = -EINVAL; if (name == NULL) { if (rtattr_parse_nested(tb, TCA_ACT_MAX, rta) < 0) goto err_out; kind = tb[TCA_ACT_KIND-1]; if (kind == NULL) goto err_out; if (rtattr_strlcpy(act_name, kind, IFNAMSIZ) >= IFNAMSIZ) goto err_out; } else { if (strlcpy(act_name, name, IFNAMSIZ) >= IFNAMSIZ) goto err_out; } a_o = tc_lookup_action_n(act_name); if (a_o == NULL) { #ifdef CONFIG_KMOD rtnl_unlock(); request_module("act_%s", act_name); rtnl_lock(); a_o = tc_lookup_action_n(act_name); /* We dropped the RTNL semaphore in order to * perform the module load. So, even if we * succeeded in loading the module we have to * tell the caller to replay the request. We * indicate this using -EAGAIN. */ if (a_o != NULL) { *err = -EAGAIN; goto err_mod; } #endif *err = -ENOENT; goto err_out; } *err = -ENOMEM; a = kzalloc(sizeof(*a), GFP_KERNEL); if (a == NULL) goto err_mod; /* backward compatibility for policer */ if (name == NULL) *err = a_o->init(tb[TCA_ACT_OPTIONS-1], est, a, ovr, bind); else *err = a_o->init(rta, est, a, ovr, bind); if (*err < 0) goto err_free; /* module count goes up only when brand new policy is created if it exists and is only bound to in a_o->init() then ACT_P_CREATED is not returned (a zero is). */ if (*err != ACT_P_CREATED) module_put(a_o->owner); a->ops = a_o; *err = 0; return a; err_free: kfree(a); err_mod: module_put(a_o->owner); err_out: return NULL; }
static int tcf_ipt_init(struct rtattr *rta, struct rtattr *est, struct tc_action *a, int ovr, int bind) { struct rtattr *tb[TCA_IPT_MAX]; struct tcf_ipt *ipt; struct tcf_common *pc; struct ipt_entry_target *td, *t; char *tname; int ret = 0, err; u32 hook = 0; u32 index = 0; if (rta == NULL || rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0) return -EINVAL; if (tb[TCA_IPT_HOOK-1] == NULL || RTA_PAYLOAD(tb[TCA_IPT_HOOK-1]) < sizeof(u32)) return -EINVAL; if (tb[TCA_IPT_TARG-1] == NULL || RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < sizeof(*t)) return -EINVAL; td = (struct ipt_entry_target *)RTA_DATA(tb[TCA_IPT_TARG-1]); if (RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < td->u.target_size) return -EINVAL; if (tb[TCA_IPT_INDEX-1] != NULL && RTA_PAYLOAD(tb[TCA_IPT_INDEX-1]) >= sizeof(u32)) index = *(u32 *)RTA_DATA(tb[TCA_IPT_INDEX-1]); pc = tcf_hash_check(index, a, bind, &ipt_hash_info); if (!pc) { pc = tcf_hash_create(index, est, a, sizeof(*ipt), bind, &ipt_idx_gen, &ipt_hash_info); if (unlikely(!pc)) return -ENOMEM; ret = ACT_P_CREATED; } else { if (!ovr) { tcf_ipt_release(to_ipt(pc), bind); return -EEXIST; } } ipt = to_ipt(pc); hook = *(u32 *)RTA_DATA(tb[TCA_IPT_HOOK-1]); err = -ENOMEM; tname = kmalloc(IFNAMSIZ, GFP_KERNEL); if (unlikely(!tname)) goto err1; if (tb[TCA_IPT_TABLE - 1] == NULL || rtattr_strlcpy(tname, tb[TCA_IPT_TABLE-1], IFNAMSIZ) >= IFNAMSIZ) strcpy(tname, "mangle"); t = kmemdup(td, td->u.target_size, GFP_KERNEL); if (unlikely(!t)) goto err2; if ((err = ipt_init_target(t, tname, hook)) < 0) goto err3; spin_lock_bh(&ipt->tcf_lock); if (ret != ACT_P_CREATED) { ipt_destroy_target(ipt->tcfi_t); kfree(ipt->tcfi_tname); kfree(ipt->tcfi_t); } ipt->tcfi_tname = tname; ipt->tcfi_t = t; ipt->tcfi_hook = hook; spin_unlock_bh(&ipt->tcf_lock); if (ret == ACT_P_CREATED) tcf_hash_insert(pc, &ipt_hash_info); return ret; err3: kfree(t); err2: kfree(tname); err1: kfree(pc); return err; }
static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct ifinfomsg *ifm = NLMSG_DATA(nlh); struct rtattr **ida = arg; struct net_device *dev; int err, send_addr_notify = 0; if (ifm->ifi_index >= 0) dev = dev_get_by_index(ifm->ifi_index); else if (ida[IFLA_IFNAME - 1]) { char ifname[IFNAMSIZ]; if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1], IFNAMSIZ) >= IFNAMSIZ) return -EINVAL; dev = dev_get_by_name(ifname); } else return -EINVAL; if (!dev) return -ENODEV; err = -EINVAL; if (ifm->ifi_flags) dev_change_flags(dev, ifm->ifi_flags); if (ida[IFLA_MAP - 1]) { struct rtnl_link_ifmap *u_map; struct ifmap k_map; if (!dev->set_config) { err = -EOPNOTSUPP; goto out; } if (!netif_device_present(dev)) { err = -ENODEV; goto out; } if (ida[IFLA_MAP - 1]->rta_len != RTA_LENGTH(sizeof(*u_map))) goto out; u_map = RTA_DATA(ida[IFLA_MAP - 1]); k_map.mem_start = (unsigned long) u_map->mem_start; k_map.mem_end = (unsigned long) u_map->mem_end; k_map.base_addr = (unsigned short) u_map->base_addr; k_map.irq = (unsigned char) u_map->irq; k_map.dma = (unsigned char) u_map->dma; k_map.port = (unsigned char) u_map->port; err = dev->set_config(dev, &k_map); if (err) goto out; } if (ida[IFLA_ADDRESS - 1]) { struct sockaddr *sa; int len; if (!dev->set_mac_address) { err = -EOPNOTSUPP; goto out; } if (!netif_device_present(dev)) { err = -ENODEV; goto out; } if (ida[IFLA_ADDRESS - 1]->rta_len != RTA_LENGTH(dev->addr_len)) goto out; len = sizeof(sa_family_t) + dev->addr_len; sa = kmalloc(len, GFP_KERNEL); if (!sa) { err = -ENOMEM; goto out; } sa->sa_family = dev->type; memcpy(sa->sa_data, RTA_DATA(ida[IFLA_ADDRESS - 1]), dev->addr_len); err = dev->set_mac_address(dev, sa); kfree(sa); if (err) goto out; send_addr_notify = 1; } if (ida[IFLA_BROADCAST - 1]) { if (ida[IFLA_BROADCAST - 1]->rta_len != RTA_LENGTH(dev->addr_len)) goto out; memcpy(dev->broadcast, RTA_DATA(ida[IFLA_BROADCAST - 1]), dev->addr_len); send_addr_notify = 1; } if (ida[IFLA_MTU - 1]) { if (ida[IFLA_MTU - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; err = dev_set_mtu(dev, *((u32 *) RTA_DATA(ida[IFLA_MTU - 1]))); if (err) goto out; } if (ida[IFLA_TXQLEN - 1]) { if (ida[IFLA_TXQLEN - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; dev->tx_queue_len = *((u32 *) RTA_DATA(ida[IFLA_TXQLEN - 1])); } if (ida[IFLA_WEIGHT - 1]) { if (ida[IFLA_WEIGHT - 1]->rta_len != RTA_LENGTH(sizeof(u32))) goto out; dev->weight = *((u32 *) RTA_DATA(ida[IFLA_WEIGHT - 1])); } if (ida[IFLA_OPERSTATE - 1]) { if (ida[IFLA_OPERSTATE - 1]->rta_len != RTA_LENGTH(sizeof(u8))) goto out; set_operstate(dev, *((u8 *) RTA_DATA(ida[IFLA_OPERSTATE - 1]))); } if (ida[IFLA_LINKMODE - 1]) { if (ida[IFLA_LINKMODE - 1]->rta_len != RTA_LENGTH(sizeof(u8))) goto out; write_lock_bh(&dev_base_lock); dev->link_mode = *((u8 *) RTA_DATA(ida[IFLA_LINKMODE - 1])); write_unlock_bh(&dev_base_lock); } if (ifm->ifi_index >= 0 && ida[IFLA_IFNAME - 1]) { char ifname[IFNAMSIZ]; if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1], IFNAMSIZ) >= IFNAMSIZ) goto out; err = dev_change_name(dev, ifname); if (err) goto out; } #ifdef CONFIG_NET_WIRELESS_RTNETLINK if (ida[IFLA_WIRELESS - 1]) { /* Call Wireless Extensions. * Various stuff checked in there... */ err = wireless_rtnetlink_set(dev, RTA_DATA(ida[IFLA_WIRELESS - 1]), ida[IFLA_WIRELESS - 1]->rta_len); if (err) goto out; } #endif /* CONFIG_NET_WIRELESS_RTNETLINK */ err = 0; out: if (send_addr_notify) call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); dev_put(dev); return err; }