diff options
| -rw-r--r-- | net/ipv6/addrconf.c | 57 |
1 files changed, 30 insertions, 27 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 2f8aa4fd5e55..afa279170ba5 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4793,12 +4793,19 @@ static inline int inet6_ifaddr_msgsize(void) + nla_total_size(4) /* IFA_RT_PRIORITY */; } +enum addr_type_t { + UNICAST_ADDR, + MULTICAST_ADDR, + ANYCAST_ADDR, +}; + struct inet6_fill_args { u32 portid; u32 seq; int event; unsigned int flags; int netnsid; + enum addr_type_t type; }; static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa, @@ -4930,39 +4937,28 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca, return 0; } -enum addr_type_t { - UNICAST_ADDR, - MULTICAST_ADDR, - ANYCAST_ADDR, -}; - /* called with rcu_read_lock() */ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb, - struct netlink_callback *cb, enum addr_type_t type, - int s_ip_idx, int *p_ip_idx, int netnsid) + struct netlink_callback *cb, + int s_ip_idx, int *p_ip_idx, + struct inet6_fill_args *fillargs) { - struct inet6_fill_args fillargs = { - .portid = NETLINK_CB(cb->skb).portid, - .seq = cb->nlh->nlmsg_seq, - .flags = NLM_F_MULTI, - .netnsid = netnsid, - }; struct ifmcaddr6 *ifmca; struct ifacaddr6 *ifaca; int err = 1; int ip_idx = *p_ip_idx; read_lock_bh(&idev->lock); - switch (type) { + switch (fillargs->type) { case UNICAST_ADDR: { struct inet6_ifaddr *ifa; - fillargs.event = RTM_NEWADDR; + fillargs->event = RTM_NEWADDR; /* unicast address incl. temp addr */ list_for_each_entry(ifa, &idev->addr_list, if_list) { if (++ip_idx < s_ip_idx) continue; - err = inet6_fill_ifaddr(skb, ifa, &fillargs); + err = inet6_fill_ifaddr(skb, ifa, fillargs); if (err < 0) break; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); @@ -4970,26 +4966,26 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb, break; } case MULTICAST_ADDR: - fillargs.event = RTM_GETMULTICAST; + fillargs->event = RTM_GETMULTICAST; /* multicast address */ for (ifmca = idev->mc_list; ifmca; ifmca = ifmca->next, ip_idx++) { if (ip_idx < s_ip_idx) continue; - err = inet6_fill_ifmcaddr(skb, ifmca, &fillargs); + err = inet6_fill_ifmcaddr(skb, ifmca, fillargs); if (err < 0) break; } break; case ANYCAST_ADDR: - fillargs.event = RTM_GETANYCAST; + fillargs->event = RTM_GETANYCAST; /* anycast address */ for (ifaca = idev->ac_list; ifaca; ifaca = ifaca->aca_next, ip_idx++) { if (ip_idx < s_ip_idx) continue; - err = inet6_fill_ifacaddr(skb, ifaca, &fillargs); + err = inet6_fill_ifacaddr(skb, ifaca, fillargs); if (err < 0) break; } @@ -5005,10 +5001,16 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb, static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb, enum addr_type_t type) { + struct inet6_fill_args fillargs = { + .portid = NETLINK_CB(cb->skb).portid, + .seq = cb->nlh->nlmsg_seq, + .flags = NLM_F_MULTI, + .netnsid = -1, + .type = type, + }; struct net *net = sock_net(skb->sk); struct nlattr *tb[IFA_MAX+1]; struct net *tgt_net = net; - int netnsid = -1; int h, s_h; int idx, ip_idx; int s_idx, s_ip_idx; @@ -5023,9 +5025,10 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb, if (nlmsg_parse(cb->nlh, sizeof(struct ifaddrmsg), tb, IFA_MAX, ifa_ipv6_policy, cb->extack) >= 0) { if (tb[IFA_TARGET_NETNSID]) { - netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]); + fillargs.netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]); - tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid); + tgt_net = rtnl_get_net_ns_capable(skb->sk, + fillargs.netnsid); if (IS_ERR(tgt_net)) return PTR_ERR(tgt_net); } @@ -5046,8 +5049,8 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb, if (!idev) goto cont; - if (in6_dump_addrs(idev, skb, cb, type, - s_ip_idx, &ip_idx, netnsid) < 0) + if (in6_dump_addrs(idev, skb, cb, s_ip_idx, &ip_idx, + &fillargs) < 0) goto done; cont: idx++; @@ -5058,7 +5061,7 @@ done: cb->args[0] = h; cb->args[1] = idx; cb->args[2] = ip_idx; - if (netnsid >= 0) + if (fillargs.netnsid >= 0) put_net(tgt_net); return skb->len; |