diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h index e5cfcfc7dd93c96b08c57458b71baf15418ff8ab..b473df5b95121f3f810d8ffe29f858369f5c8fd5 100644 --- a/include/net/fib_rules.h +++ b/include/net/fib_rules.h @@ -75,7 +75,8 @@ struct fib_rules_ops { int (*configure)(struct fib_rule *, struct sk_buff *, struct fib_rule_hdr *, - struct nlattr **); + struct nlattr **, + struct netlink_ext_ack *); int (*delete)(struct fib_rule *); int (*compare)(struct fib_rule *, struct fib_rule_hdr *, diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index 33958f84c17362edc1af1822ab331b08993b5696..ebd9351b213a966de581d4a1265c85ef057c4cbb 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -387,247 +387,288 @@ unsigned int fib_rules_seq_read(struct net *net, int family) } EXPORT_SYMBOL_GPL(fib_rules_seq_read); -static int validate_rulemsg(struct fib_rule_hdr *frh, struct nlattr **tb, - struct fib_rules_ops *ops) -{ - int err = -EINVAL; - - if (frh->src_len) - if (tb[FRA_SRC] == NULL || - frh->src_len > (ops->addr_size * 8) || - nla_len(tb[FRA_SRC]) != ops->addr_size) - goto errout; - - if (frh->dst_len) - if (tb[FRA_DST] == NULL || - frh->dst_len > (ops->addr_size * 8) || - nla_len(tb[FRA_DST]) != ops->addr_size) - goto errout; - - err = 0; -errout: - return err; -} - -static int rule_exists(struct fib_rules_ops *ops, struct fib_rule_hdr *frh, - struct nlattr **tb, struct fib_rule *rule) +static struct fib_rule *rule_find(struct fib_rules_ops *ops, + struct fib_rule_hdr *frh, + struct nlattr **tb, + struct fib_rule *rule, + bool user_priority) { struct fib_rule *r; list_for_each_entry(r, &ops->rules_list, list) { - if (r->action != rule->action) + if (rule->action && r->action != rule->action) continue; - if (r->table != rule->table) + if (rule->table && r->table != rule->table) continue; - if (r->pref != rule->pref) + if (user_priority && r->pref != rule->pref) continue; - if (memcmp(r->iifname, rule->iifname, IFNAMSIZ)) + if (rule->iifname[0] && + memcmp(r->iifname, rule->iifname, IFNAMSIZ)) continue; - if (memcmp(r->oifname, rule->oifname, IFNAMSIZ)) + if (rule->oifname[0] && + memcmp(r->oifname, rule->oifname, IFNAMSIZ)) continue; - if (r->mark != rule->mark) + if (rule->mark && r->mark != rule->mark) continue; - if (r->mark_mask != rule->mark_mask) + if (rule->mark_mask && r->mark_mask != rule->mark_mask) continue; - if (r->tun_id != rule->tun_id) + if (rule->tun_id && r->tun_id != rule->tun_id) continue; if (r->fr_net != rule->fr_net) continue; - if (r->l3mdev != rule->l3mdev) + if (rule->l3mdev && r->l3mdev != rule->l3mdev) continue; - if (!uid_eq(r->uid_range.start, rule->uid_range.start) || - !uid_eq(r->uid_range.end, rule->uid_range.end)) + if (uid_range_set(&rule->uid_range) && + (!uid_eq(r->uid_range.start, rule->uid_range.start) || + !uid_eq(r->uid_range.end, rule->uid_range.end))) continue; - if (r->ip_proto != rule->ip_proto) + if (rule->ip_proto && r->ip_proto != rule->ip_proto) continue; - if (!fib_rule_port_range_compare(&r->sport_range, + if (fib_rule_port_range_set(&rule->sport_range) && + !fib_rule_port_range_compare(&r->sport_range, &rule->sport_range)) continue; - if (!fib_rule_port_range_compare(&r->dport_range, + if (fib_rule_port_range_set(&rule->dport_range) && + !fib_rule_port_range_compare(&r->dport_range, &rule->dport_range)) continue; if (!ops->compare(r, frh, tb)) continue; - return 1; + return r; } - return 0; + + return NULL; } -int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, - struct netlink_ext_ack *extack) +static int fib_nl2rule(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack, + struct fib_rules_ops *ops, + struct nlattr *tb[], + struct fib_rule **rule, + bool *user_priority) { struct net *net = sock_net(skb->sk); struct fib_rule_hdr *frh = nlmsg_data(nlh); - struct fib_rules_ops *ops = NULL; - struct fib_rule *rule, *r, *last = NULL; - struct nlattr *tb[FRA_MAX+1]; - int err = -EINVAL, unresolved = 0; - - if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh))) - goto errout; + struct fib_rule *nlrule = NULL; + int err = -EINVAL; - ops = lookup_rules_ops(net, frh->family); - if (ops == NULL) { - err = -EAFNOSUPPORT; - goto errout; + if (frh->src_len) + if (!tb[FRA_SRC] || + frh->src_len > (ops->addr_size * 8) || + nla_len(tb[FRA_SRC]) != ops->addr_size) { + NL_SET_ERR_MSG(extack, "Invalid source address"); + goto errout; } - err = nlmsg_parse(nlh, sizeof(*frh), tb, FRA_MAX, ops->policy, extack); - if (err < 0) - goto errout; - - err = validate_rulemsg(frh, tb, ops); - if (err < 0) - goto errout; + if (frh->dst_len) + if (!tb[FRA_DST] || + frh->dst_len > (ops->addr_size * 8) || + nla_len(tb[FRA_DST]) != ops->addr_size) { + NL_SET_ERR_MSG(extack, "Invalid dst address"); + goto errout; + } - rule = kzalloc(ops->rule_size, GFP_KERNEL); - if (rule == NULL) { + nlrule = kzalloc(ops->rule_size, GFP_KERNEL); + if (!nlrule) { err = -ENOMEM; goto errout; } - refcount_set(&rule->refcnt, 1); - rule->fr_net = net; + refcount_set(&nlrule->refcnt, 1); + nlrule->fr_net = net; - rule->pref = tb[FRA_PRIORITY] ? nla_get_u32(tb[FRA_PRIORITY]) - : fib_default_rule_pref(ops); + if (tb[FRA_PRIORITY]) { + nlrule->pref = nla_get_u32(tb[FRA_PRIORITY]); + *user_priority = true; + } else { + nlrule->pref = fib_default_rule_pref(ops); + } - rule->proto = tb[FRA_PROTOCOL] ? + nlrule->proto = tb[FRA_PROTOCOL] ? nla_get_u8(tb[FRA_PROTOCOL]) : RTPROT_UNSPEC; if (tb[FRA_IIFNAME]) { struct net_device *dev; - rule->iifindex = -1; - nla_strlcpy(rule->iifname, tb[FRA_IIFNAME], IFNAMSIZ); - dev = __dev_get_by_name(net, rule->iifname); + nlrule->iifindex = -1; + nla_strlcpy(nlrule->iifname, tb[FRA_IIFNAME], IFNAMSIZ); + dev = __dev_get_by_name(net, nlrule->iifname); if (dev) - rule->iifindex = dev->ifindex; + nlrule->iifindex = dev->ifindex; } if (tb[FRA_OIFNAME]) { struct net_device *dev; - rule->oifindex = -1; - nla_strlcpy(rule->oifname, tb[FRA_OIFNAME], IFNAMSIZ); - dev = __dev_get_by_name(net, rule->oifname); + nlrule->oifindex = -1; + nla_strlcpy(nlrule->oifname, tb[FRA_OIFNAME], IFNAMSIZ); + dev = __dev_get_by_name(net, nlrule->oifname); if (dev) - rule->oifindex = dev->ifindex; + nlrule->oifindex = dev->ifindex; } if (tb[FRA_FWMARK]) { - rule->mark = nla_get_u32(tb[FRA_FWMARK]); - if (rule->mark) + nlrule->mark = nla_get_u32(tb[FRA_FWMARK]); + if (nlrule->mark) /* compatibility: if the mark value is non-zero all bits * are compared unless a mask is explicitly specified. */ - rule->mark_mask = 0xFFFFFFFF; + nlrule->mark_mask = 0xFFFFFFFF; } if (tb[FRA_FWMASK]) - rule->mark_mask = nla_get_u32(tb[FRA_FWMASK]); + nlrule->mark_mask = nla_get_u32(tb[FRA_FWMASK]); if (tb[FRA_TUN_ID]) - rule->tun_id = nla_get_be64(tb[FRA_TUN_ID]); + nlrule->tun_id = nla_get_be64(tb[FRA_TUN_ID]); err = -EINVAL; if (tb[FRA_L3MDEV]) { #ifdef CONFIG_NET_L3_MASTER_DEV - rule->l3mdev = nla_get_u8(tb[FRA_L3MDEV]); - if (rule->l3mdev != 1) + nlrule->l3mdev = nla_get_u8(tb[FRA_L3MDEV]); + if (nlrule->l3mdev != 1) #endif + NL_SET_ERR_MSG(extack, "Invalid l3mdev"); goto errout_free; } - rule->action = frh->action; - rule->flags = frh->flags; - rule->table = frh_get_table(frh, tb); + nlrule->action = frh->action; + nlrule->flags = frh->flags; + nlrule->table = frh_get_table(frh, tb); if (tb[FRA_SUPPRESS_PREFIXLEN]) - rule->suppress_prefixlen = nla_get_u32(tb[FRA_SUPPRESS_PREFIXLEN]); + nlrule->suppress_prefixlen = nla_get_u32(tb[FRA_SUPPRESS_PREFIXLEN]); else - rule->suppress_prefixlen = -1; + nlrule->suppress_prefixlen = -1; if (tb[FRA_SUPPRESS_IFGROUP]) - rule->suppress_ifgroup = nla_get_u32(tb[FRA_SUPPRESS_IFGROUP]); + nlrule->suppress_ifgroup = nla_get_u32(tb[FRA_SUPPRESS_IFGROUP]); else - rule->suppress_ifgroup = -1; + nlrule->suppress_ifgroup = -1; if (tb[FRA_GOTO]) { - if (rule->action != FR_ACT_GOTO) + if (nlrule->action != FR_ACT_GOTO) { + NL_SET_ERR_MSG(extack, "Unexpected goto"); goto errout_free; + } - rule->target = nla_get_u32(tb[FRA_GOTO]); + nlrule->target = nla_get_u32(tb[FRA_GOTO]); /* Backward jumps are prohibited to avoid endless loops */ - if (rule->target <= rule->pref) + if (nlrule->target <= nlrule->pref) { + NL_SET_ERR_MSG(extack, "Backward goto not supported"); goto errout_free; - - list_for_each_entry(r, &ops->rules_list, list) { - if (r->pref == rule->target) { - RCU_INIT_POINTER(rule->ctarget, r); - break; - } } - - if (rcu_dereference_protected(rule->ctarget, 1) == NULL) - unresolved = 1; - } else if (rule->action == FR_ACT_GOTO) + } else if (nlrule->action == FR_ACT_GOTO) { + NL_SET_ERR_MSG(extack, "Missing goto target for action goto"); goto errout_free; + } - if (rule->l3mdev && rule->table) + if (nlrule->l3mdev && nlrule->table) { + NL_SET_ERR_MSG(extack, "l3mdev and table are mutually exclusive"); goto errout_free; + } if (tb[FRA_UID_RANGE]) { if (current_user_ns() != net->user_ns) { err = -EPERM; + NL_SET_ERR_MSG(extack, "No permission to set uid"); goto errout_free; } - rule->uid_range = nla_get_kuid_range(tb); + nlrule->uid_range = nla_get_kuid_range(tb); - if (!uid_range_set(&rule->uid_range) || - !uid_lte(rule->uid_range.start, rule->uid_range.end)) + if (!uid_range_set(&nlrule->uid_range) || + !uid_lte(nlrule->uid_range.start, nlrule->uid_range.end)) { + NL_SET_ERR_MSG(extack, "Invalid uid range"); goto errout_free; + } } else { - rule->uid_range = fib_kuid_range_unset; + nlrule->uid_range = fib_kuid_range_unset; } if (tb[FRA_IP_PROTO]) - rule->ip_proto = nla_get_u8(tb[FRA_IP_PROTO]); + nlrule->ip_proto = nla_get_u8(tb[FRA_IP_PROTO]); if (tb[FRA_SPORT_RANGE]) { err = nla_get_port_range(tb[FRA_SPORT_RANGE], - &rule->sport_range); - if (err) + &nlrule->sport_range); + if (err) { + NL_SET_ERR_MSG(extack, "Invalid sport range"); goto errout_free; + } } if (tb[FRA_DPORT_RANGE]) { err = nla_get_port_range(tb[FRA_DPORT_RANGE], - &rule->dport_range); - if (err) + &nlrule->dport_range); + if (err) { + NL_SET_ERR_MSG(extack, "Invalid dport range"); goto errout_free; + } + } + + *rule = nlrule; + + return 0; + +errout_free: + kfree(nlrule); +errout: + return err; +} + +int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + struct net *net = sock_net(skb->sk); + struct fib_rule_hdr *frh = nlmsg_data(nlh); + struct fib_rules_ops *ops = NULL; + struct fib_rule *rule = NULL, *r, *last = NULL; + struct nlattr *tb[FRA_MAX + 1]; + int err = -EINVAL, unresolved = 0; + bool user_priority = false; + + if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh))) { + NL_SET_ERR_MSG(extack, "Invalid msg length"); + goto errout; + } + + ops = lookup_rules_ops(net, frh->family); + if (!ops) { + err = -EAFNOSUPPORT; + NL_SET_ERR_MSG(extack, "Rule family not supported"); + goto errout; + } + + err = nlmsg_parse(nlh, sizeof(*frh), tb, FRA_MAX, ops->policy, extack); + if (err < 0) { + NL_SET_ERR_MSG(extack, "Error parsing msg"); + goto errout; } + err = fib_nl2rule(skb, nlh, extack, ops, tb, &rule, &user_priority); + if (err) + goto errout; + if ((nlh->nlmsg_flags & NLM_F_EXCL) && - rule_exists(ops, frh, tb, rule)) { + rule_find(ops, frh, tb, rule, user_priority)) { err = -EEXIST; goto errout_free; } - err = ops->configure(rule, skb, frh, tb); + err = ops->configure(rule, skb, frh, tb, extack); if (err < 0) goto errout_free; @@ -636,6 +677,16 @@ int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, if (err < 0) goto errout_free; + list_for_each_entry(r, &ops->rules_list, list) { + if (r->pref == rule->target) { + RCU_INIT_POINTER(rule->ctarget, r); + break; + } + } + + if (rcu_dereference_protected(rule->ctarget, 1) == NULL) + unresolved = 1; + list_for_each_entry(r, &ops->rules_list, list) { if (r->pref > rule->pref) break; @@ -690,171 +741,97 @@ int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, { struct net *net = sock_net(skb->sk); struct fib_rule_hdr *frh = nlmsg_data(nlh); - struct fib_rule_port_range sprange = {0, 0}; - struct fib_rule_port_range dprange = {0, 0}; struct fib_rules_ops *ops = NULL; - struct fib_rule *rule, *r; + struct fib_rule *rule = NULL, *r, *nlrule = NULL; struct nlattr *tb[FRA_MAX+1]; - struct fib_kuid_range range; int err = -EINVAL; + bool user_priority = false; - if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh))) + if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh))) { + NL_SET_ERR_MSG(extack, "Invalid msg length"); goto errout; + } ops = lookup_rules_ops(net, frh->family); if (ops == NULL) { err = -EAFNOSUPPORT; + NL_SET_ERR_MSG(extack, "Rule family not supported"); goto errout; } err = nlmsg_parse(nlh, sizeof(*frh), tb, FRA_MAX, ops->policy, extack); - if (err < 0) + if (err < 0) { + NL_SET_ERR_MSG(extack, "Error parsing msg"); goto errout; + } - err = validate_rulemsg(frh, tb, ops); - if (err < 0) + err = fib_nl2rule(skb, nlh, extack, ops, tb, &nlrule, &user_priority); + if (err) goto errout; - if (tb[FRA_UID_RANGE]) { - range = nla_get_kuid_range(tb); - if (!uid_range_set(&range)) { - err = -EINVAL; - goto errout; - } - } else { - range = fib_kuid_range_unset; + rule = rule_find(ops, frh, tb, nlrule, user_priority); + if (!rule) { + err = -ENOENT; + goto errout; } - if (tb[FRA_SPORT_RANGE]) { - err = nla_get_port_range(tb[FRA_SPORT_RANGE], - &sprange); - if (err) - goto errout; + if (rule->flags & FIB_RULE_PERMANENT) { + err = -EPERM; + goto errout; } - if (tb[FRA_DPORT_RANGE]) { - err = nla_get_port_range(tb[FRA_DPORT_RANGE], - &dprange); + if (ops->delete) { + err = ops->delete(rule); if (err) goto errout; } - list_for_each_entry(rule, &ops->rules_list, list) { - if (tb[FRA_PROTOCOL] && - (rule->proto != nla_get_u8(tb[FRA_PROTOCOL]))) - continue; - - if (frh->action && (frh->action != rule->action)) - continue; - - if (frh_get_table(frh, tb) && - (frh_get_table(frh, tb) != rule->table)) - continue; - - if (tb[FRA_PRIORITY] && - (rule->pref != nla_get_u32(tb[FRA_PRIORITY]))) - continue; - - if (tb[FRA_IIFNAME] && - nla_strcmp(tb[FRA_IIFNAME], rule->iifname)) - continue; - - if (tb[FRA_OIFNAME] && - nla_strcmp(tb[FRA_OIFNAME], rule->oifname)) - continue; - - if (tb[FRA_FWMARK] && - (rule->mark != nla_get_u32(tb[FRA_FWMARK]))) - continue; - - if (tb[FRA_FWMASK] && - (rule->mark_mask != nla_get_u32(tb[FRA_FWMASK]))) - continue; - - if (tb[FRA_TUN_ID] && - (rule->tun_id != nla_get_be64(tb[FRA_TUN_ID]))) - continue; - - if (tb[FRA_L3MDEV] && - (rule->l3mdev != nla_get_u8(tb[FRA_L3MDEV]))) - continue; - - if (uid_range_set(&range) && - (!uid_eq(rule->uid_range.start, range.start) || - !uid_eq(rule->uid_range.end, range.end))) - continue; - - if (tb[FRA_IP_PROTO] && - (rule->ip_proto != nla_get_u8(tb[FRA_IP_PROTO]))) - continue; - - if (fib_rule_port_range_set(&sprange) && - !fib_rule_port_range_compare(&rule->sport_range, &sprange)) - continue; - - if (fib_rule_port_range_set(&dprange) && - !fib_rule_port_range_compare(&rule->dport_range, &dprange)) - continue; - - if (!ops->compare(rule, frh, tb)) - continue; - - if (rule->flags & FIB_RULE_PERMANENT) { - err = -EPERM; - goto errout; - } - - if (ops->delete) { - err = ops->delete(rule); - if (err) - goto errout; - } - - if (rule->tun_id) - ip_tunnel_unneed_metadata(); + if (rule->tun_id) + ip_tunnel_unneed_metadata(); - list_del_rcu(&rule->list); + list_del_rcu(&rule->list); - if (rule->action == FR_ACT_GOTO) { - ops->nr_goto_rules--; - if (rtnl_dereference(rule->ctarget) == NULL) - ops->unresolved_rules--; - } + if (rule->action == FR_ACT_GOTO) { + ops->nr_goto_rules--; + if (rtnl_dereference(rule->ctarget) == NULL) + ops->unresolved_rules--; + } - /* - * Check if this rule is a target to any of them. If so, - * adjust to the next one with the same preference or - * disable them. As this operation is eventually very - * expensive, it is only performed if goto rules, except - * current if it is goto rule, have actually been added. - */ - if (ops->nr_goto_rules > 0) { - struct fib_rule *n; - - n = list_next_entry(rule, list); - if (&n->list == &ops->rules_list || n->pref != rule->pref) - n = NULL; - list_for_each_entry(r, &ops->rules_list, list) { - if (rtnl_dereference(r->ctarget) != rule) - continue; - rcu_assign_pointer(r->ctarget, n); - if (!n) - ops->unresolved_rules++; - } + /* + * Check if this rule is a target to any of them. If so, + * adjust to the next one with the same preference or + * disable them. As this operation is eventually very + * expensive, it is only performed if goto rules, except + * current if it is goto rule, have actually been added. + */ + if (ops->nr_goto_rules > 0) { + struct fib_rule *n; + + n = list_next_entry(rule, list); + if (&n->list == &ops->rules_list || n->pref != rule->pref) + n = NULL; + list_for_each_entry(r, &ops->rules_list, list) { + if (rtnl_dereference(r->ctarget) != rule) + continue; + rcu_assign_pointer(r->ctarget, n); + if (!n) + ops->unresolved_rules++; } - - call_fib_rule_notifiers(net, FIB_EVENT_RULE_DEL, rule, ops, - NULL); - notify_rule_change(RTM_DELRULE, rule, ops, nlh, - NETLINK_CB(skb).portid); - fib_rule_put(rule); - flush_route_cache(ops); - rules_ops_put(ops); - return 0; } - err = -ENOENT; + call_fib_rule_notifiers(net, FIB_EVENT_RULE_DEL, rule, ops, + NULL); + notify_rule_change(RTM_DELRULE, rule, ops, nlh, + NETLINK_CB(skb).portid); + fib_rule_put(rule); + flush_route_cache(ops); + rules_ops_put(ops); + kfree(nlrule); + return 0; + errout: + if (nlrule) + kfree(nlrule); rules_ops_put(ops); return err; } diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c index c795c3f509c9494486463f1839c4c9dcadff797c..72236695db3db2fb27e3b3414feafde008bfd8c6 100644 --- a/net/decnet/dn_rules.c +++ b/net/decnet/dn_rules.c @@ -121,13 +121,16 @@ static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) static int dn_fib_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh, - struct nlattr **tb) + struct nlattr **tb, + struct netlink_ext_ack *extack) { int err = -EINVAL; struct dn_fib_rule *r = (struct dn_fib_rule *)rule; - if (frh->tos) + if (frh->tos) { + NL_SET_ERR_MSG(extack, "Invalid tos value"); goto errout; + } if (rule->table == RT_TABLE_UNSPEC) { if (rule->action == FR_ACT_TO_TBL) { diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index 737d11bc8838bc175df587db4acd3fce3146c60d..f8eb78d042a48e658792fa38d7466a87eca944aa 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -213,14 +213,17 @@ static const struct nla_policy fib4_rule_policy[FRA_MAX+1] = { static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh, - struct nlattr **tb) + struct nlattr **tb, + struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); int err = -EINVAL; struct fib4_rule *rule4 = (struct fib4_rule *) rule; - if (frh->tos & ~IPTOS_TOS_MASK) + if (frh->tos & ~IPTOS_TOS_MASK) { + NL_SET_ERR_MSG(extack, "Invalid tos"); goto errout; + } /* split local/main if they are not already split */ err = fib_unmerge(net); diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 2fb4de3f7f66120a10ed69e1c0020acd229c4e29..38e092eafc97ea08e5530d9c9675c883aa2fd1ba 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -201,7 +201,8 @@ static const struct nla_policy ipmr_rule_policy[FRA_MAX + 1] = { }; static int ipmr_rule_configure(struct fib_rule *rule, struct sk_buff *skb, - struct fib_rule_hdr *frh, struct nlattr **tb) + struct fib_rule_hdr *frh, struct nlattr **tb, + struct netlink_ext_ack *extack) { return 0; } diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c index df113c7b5fc82dbddc33ce5ed6865630a545b296..6547fc6491a63af0ccbab6fd4ca04c8c64c8622b 100644 --- a/net/ipv6/fib6_rules.c +++ b/net/ipv6/fib6_rules.c @@ -245,15 +245,18 @@ static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = { static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh, - struct nlattr **tb) + struct nlattr **tb, + struct netlink_ext_ack *extack) { int err = -EINVAL; struct net *net = sock_net(skb->sk); struct fib6_rule *rule6 = (struct fib6_rule *) rule; if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) { - if (rule->table == RT6_TABLE_UNSPEC) + if (rule->table == RT6_TABLE_UNSPEC) { + NL_SET_ERR_MSG(extack, "Invalid table"); goto errout; + } if (fib6_new_table(net, rule->table) == NULL) { err = -ENOBUFS; diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 298fd8b6ed17fa1ce95c6a1b2b831bf68201671a..20a419ee800057a4fb6ad4c66ff7bf71dff44d3a 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -180,7 +180,8 @@ static const struct nla_policy ip6mr_rule_policy[FRA_MAX + 1] = { }; static int ip6mr_rule_configure(struct fib_rule *rule, struct sk_buff *skb, - struct fib_rule_hdr *frh, struct nlattr **tb) + struct fib_rule_hdr *frh, struct nlattr **tb, + struct netlink_ext_ack *extack) { return 0; }