From 461d8837faac141f4676bf451b3339d0e48656d1 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Mon, 18 Sep 2006 00:09:49 -0700 Subject: [PATCH] [IPV6] address: Convert address addition to new netlink api Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 72 ++++++++++++++++++++++++++++----------------- 1 file changed, 45 insertions(+), 27 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index fc9cff3426c4..52ba96a64a1f 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2868,6 +2868,29 @@ restart: spin_unlock_bh(&addrconf_verify_lock); } +static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local) +{ + struct in6_addr *pfx = NULL; + + if (addr) + pfx = nla_data(addr); + + if (local) { + if (pfx && nla_memcmp(local, pfx, sizeof(*pfx))) + pfx = NULL; + else + pfx = nla_data(local); + } + + return pfx; +} + +static struct nla_policy ifa_ipv6_policy[IFA_MAX+1] __read_mostly = { + [IFA_ADDRESS] = { .len = sizeof(struct in6_addr) }, + [IFA_LOCAL] = { .len = sizeof(struct in6_addr) }, + [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) }, +}; + static int inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { @@ -2945,46 +2968,41 @@ inet6_addr_modify(int ifindex, struct in6_addr *pfx, static int inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { - struct rtattr **rta = arg; - struct ifaddrmsg *ifm = NLMSG_DATA(nlh); + struct ifaddrmsg *ifm; + struct nlattr *tb[IFA_MAX+1]; struct in6_addr *pfx; - __u32 valid_lft = INFINITY_LIFE_TIME, prefered_lft = INFINITY_LIFE_TIME; + u32 valid_lft, preferred_lft; + int err; - pfx = NULL; - if (rta[IFA_ADDRESS-1]) { - if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx)) - return -EINVAL; - pfx = RTA_DATA(rta[IFA_ADDRESS-1]); - } - if (rta[IFA_LOCAL-1]) { - if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) || - (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx)))) - return -EINVAL; - pfx = RTA_DATA(rta[IFA_LOCAL-1]); - } + err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); + if (err < 0) + return err; + + ifm = nlmsg_data(nlh); + pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]); if (pfx == NULL) return -EINVAL; - if (rta[IFA_CACHEINFO-1]) { + if (tb[IFA_CACHEINFO]) { struct ifa_cacheinfo *ci; - if (RTA_PAYLOAD(rta[IFA_CACHEINFO-1]) < sizeof(*ci)) - return -EINVAL; - ci = RTA_DATA(rta[IFA_CACHEINFO-1]); + + ci = nla_data(tb[IFA_CACHEINFO]); valid_lft = ci->ifa_valid; - prefered_lft = ci->ifa_prefered; + preferred_lft = ci->ifa_prefered; + } else { + preferred_lft = INFINITY_LIFE_TIME; + valid_lft = INFINITY_LIFE_TIME; } if (nlh->nlmsg_flags & NLM_F_REPLACE) { - int ret; - ret = inet6_addr_modify(ifm->ifa_index, pfx, - prefered_lft, valid_lft); - if (ret == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE)) - return ret; + err = inet6_addr_modify(ifm->ifa_index, pfx, + preferred_lft, valid_lft); + if (err == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE)) + return err; } return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen, - prefered_lft, valid_lft); - + preferred_lft, valid_lft); } /* Maximum length of ifa_cacheinfo attributes */