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authorJeff Garzik <jeff@garzik.org>2006-08-03 17:20:37 -0400
committerJeff Garzik <jeff@garzik.org>2006-08-03 17:20:37 -0400
commit23946a8a980d13af7b84bcf3ce023e0d166ec83f (patch)
tree193d2959a7b62b48aaf2236447f1378779e55104 /net/ipv6
parent66e8bb97055ff22a0e5ea89c0a75a35f8738cc96 (diff)
parent2b14c30b46e007a16c665cc86329bf4a1d9ff6ee (diff)
Merge branch 'upstream-fixes' into upstream
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/addrconf.c174
-rw-r--r--net/ipv6/af_inet6.c2
-rw-r--r--net/ipv6/inet6_connection_sock.c2
-rw-r--r--net/ipv6/ip6_output.c129
-rw-r--r--net/ipv6/route.c7
-rw-r--r--net/ipv6/tcp_ipv6.c6
-rw-r--r--net/ipv6/udp.c2
-rw-r--r--net/ipv6/xfrm6_output.c2
8 files changed, 266 insertions, 58 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 2316a4315a18..8ea1e36bf8eb 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1869,15 +1869,21 @@ err_exit:
1869/* 1869/*
1870 * Manual configuration of address on an interface 1870 * Manual configuration of address on an interface
1871 */ 1871 */
1872static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen) 1872static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen,
1873 __u32 prefered_lft, __u32 valid_lft)
1873{ 1874{
1874 struct inet6_ifaddr *ifp; 1875 struct inet6_ifaddr *ifp;
1875 struct inet6_dev *idev; 1876 struct inet6_dev *idev;
1876 struct net_device *dev; 1877 struct net_device *dev;
1878 __u8 ifa_flags = 0;
1877 int scope; 1879 int scope;
1878 1880
1879 ASSERT_RTNL(); 1881 ASSERT_RTNL();
1880 1882
1883 /* check the lifetime */
1884 if (!valid_lft || prefered_lft > valid_lft)
1885 return -EINVAL;
1886
1881 if ((dev = __dev_get_by_index(ifindex)) == NULL) 1887 if ((dev = __dev_get_by_index(ifindex)) == NULL)
1882 return -ENODEV; 1888 return -ENODEV;
1883 1889
@@ -1889,10 +1895,29 @@ static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen)
1889 1895
1890 scope = ipv6_addr_scope(pfx); 1896 scope = ipv6_addr_scope(pfx);
1891 1897
1892 ifp = ipv6_add_addr(idev, pfx, plen, scope, IFA_F_PERMANENT); 1898 if (valid_lft == INFINITY_LIFE_TIME)
1899 ifa_flags |= IFA_F_PERMANENT;
1900 else if (valid_lft >= 0x7FFFFFFF/HZ)
1901 valid_lft = 0x7FFFFFFF/HZ;
1902
1903 if (prefered_lft == 0)
1904 ifa_flags |= IFA_F_DEPRECATED;
1905 else if ((prefered_lft >= 0x7FFFFFFF/HZ) &&
1906 (prefered_lft != INFINITY_LIFE_TIME))
1907 prefered_lft = 0x7FFFFFFF/HZ;
1908
1909 ifp = ipv6_add_addr(idev, pfx, plen, scope, ifa_flags);
1910
1893 if (!IS_ERR(ifp)) { 1911 if (!IS_ERR(ifp)) {
1912 spin_lock(&ifp->lock);
1913 ifp->valid_lft = valid_lft;
1914 ifp->prefered_lft = prefered_lft;
1915 ifp->tstamp = jiffies;
1916 spin_unlock(&ifp->lock);
1917
1894 addrconf_dad_start(ifp, 0); 1918 addrconf_dad_start(ifp, 0);
1895 in6_ifa_put(ifp); 1919 in6_ifa_put(ifp);
1920 addrconf_verify(0);
1896 return 0; 1921 return 0;
1897 } 1922 }
1898 1923
@@ -1945,7 +1970,8 @@ int addrconf_add_ifaddr(void __user *arg)
1945 return -EFAULT; 1970 return -EFAULT;
1946 1971
1947 rtnl_lock(); 1972 rtnl_lock();
1948 err = inet6_addr_add(ireq.ifr6_ifindex, &ireq.ifr6_addr, ireq.ifr6_prefixlen); 1973 err = inet6_addr_add(ireq.ifr6_ifindex, &ireq.ifr6_addr, ireq.ifr6_prefixlen,
1974 INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
1949 rtnl_unlock(); 1975 rtnl_unlock();
1950 return err; 1976 return err;
1951} 1977}
@@ -2771,12 +2797,16 @@ restart:
2771 ifp->idev->nd_parms->retrans_time / HZ; 2797 ifp->idev->nd_parms->retrans_time / HZ;
2772#endif 2798#endif
2773 2799
2774 if (age >= ifp->valid_lft) { 2800 if (ifp->valid_lft != INFINITY_LIFE_TIME &&
2801 age >= ifp->valid_lft) {
2775 spin_unlock(&ifp->lock); 2802 spin_unlock(&ifp->lock);
2776 in6_ifa_hold(ifp); 2803 in6_ifa_hold(ifp);
2777 read_unlock(&addrconf_hash_lock); 2804 read_unlock(&addrconf_hash_lock);
2778 ipv6_del_addr(ifp); 2805 ipv6_del_addr(ifp);
2779 goto restart; 2806 goto restart;
2807 } else if (ifp->prefered_lft == INFINITY_LIFE_TIME) {
2808 spin_unlock(&ifp->lock);
2809 continue;
2780 } else if (age >= ifp->prefered_lft) { 2810 } else if (age >= ifp->prefered_lft) {
2781 /* jiffies - ifp->tsamp > age >= ifp->prefered_lft */ 2811 /* jiffies - ifp->tsamp > age >= ifp->prefered_lft */
2782 int deprecate = 0; 2812 int deprecate = 0;
@@ -2853,7 +2883,8 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2853 pfx = RTA_DATA(rta[IFA_ADDRESS-1]); 2883 pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
2854 } 2884 }
2855 if (rta[IFA_LOCAL-1]) { 2885 if (rta[IFA_LOCAL-1]) {
2856 if (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))) 2886 if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) ||
2887 (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))))
2857 return -EINVAL; 2888 return -EINVAL;
2858 pfx = RTA_DATA(rta[IFA_LOCAL-1]); 2889 pfx = RTA_DATA(rta[IFA_LOCAL-1]);
2859 } 2890 }
@@ -2864,11 +2895,61 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2864} 2895}
2865 2896
2866static int 2897static int
2898inet6_addr_modify(int ifindex, struct in6_addr *pfx,
2899 __u32 prefered_lft, __u32 valid_lft)
2900{
2901 struct inet6_ifaddr *ifp = NULL;
2902 struct net_device *dev;
2903 int ifa_flags = 0;
2904
2905 if ((dev = __dev_get_by_index(ifindex)) == NULL)
2906 return -ENODEV;
2907
2908 if (!(dev->flags&IFF_UP))
2909 return -ENETDOWN;
2910
2911 if (!valid_lft || (prefered_lft > valid_lft))
2912 return -EINVAL;
2913
2914 ifp = ipv6_get_ifaddr(pfx, dev, 1);
2915 if (ifp == NULL)
2916 return -ENOENT;
2917
2918 if (valid_lft == INFINITY_LIFE_TIME)
2919 ifa_flags = IFA_F_PERMANENT;
2920 else if (valid_lft >= 0x7FFFFFFF/HZ)
2921 valid_lft = 0x7FFFFFFF/HZ;
2922
2923 if (prefered_lft == 0)
2924 ifa_flags = IFA_F_DEPRECATED;
2925 else if ((prefered_lft >= 0x7FFFFFFF/HZ) &&
2926 (prefered_lft != INFINITY_LIFE_TIME))
2927 prefered_lft = 0x7FFFFFFF/HZ;
2928
2929 spin_lock_bh(&ifp->lock);
2930 ifp->flags = (ifp->flags & ~(IFA_F_DEPRECATED|IFA_F_PERMANENT)) | ifa_flags;
2931
2932 ifp->tstamp = jiffies;
2933 ifp->valid_lft = valid_lft;
2934 ifp->prefered_lft = prefered_lft;
2935
2936 spin_unlock_bh(&ifp->lock);
2937 if (!(ifp->flags&IFA_F_TENTATIVE))
2938 ipv6_ifa_notify(0, ifp);
2939 in6_ifa_put(ifp);
2940
2941 addrconf_verify(0);
2942
2943 return 0;
2944}
2945
2946static int
2867inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) 2947inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2868{ 2948{
2869 struct rtattr **rta = arg; 2949 struct rtattr **rta = arg;
2870 struct ifaddrmsg *ifm = NLMSG_DATA(nlh); 2950 struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
2871 struct in6_addr *pfx; 2951 struct in6_addr *pfx;
2952 __u32 valid_lft = INFINITY_LIFE_TIME, prefered_lft = INFINITY_LIFE_TIME;
2872 2953
2873 pfx = NULL; 2954 pfx = NULL;
2874 if (rta[IFA_ADDRESS-1]) { 2955 if (rta[IFA_ADDRESS-1]) {
@@ -2877,14 +2958,34 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2877 pfx = RTA_DATA(rta[IFA_ADDRESS-1]); 2958 pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
2878 } 2959 }
2879 if (rta[IFA_LOCAL-1]) { 2960 if (rta[IFA_LOCAL-1]) {
2880 if (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))) 2961 if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) ||
2962 (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))))
2881 return -EINVAL; 2963 return -EINVAL;
2882 pfx = RTA_DATA(rta[IFA_LOCAL-1]); 2964 pfx = RTA_DATA(rta[IFA_LOCAL-1]);
2883 } 2965 }
2884 if (pfx == NULL) 2966 if (pfx == NULL)
2885 return -EINVAL; 2967 return -EINVAL;
2886 2968
2887 return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen); 2969 if (rta[IFA_CACHEINFO-1]) {
2970 struct ifa_cacheinfo *ci;
2971 if (RTA_PAYLOAD(rta[IFA_CACHEINFO-1]) < sizeof(*ci))
2972 return -EINVAL;
2973 ci = RTA_DATA(rta[IFA_CACHEINFO-1]);
2974 valid_lft = ci->ifa_valid;
2975 prefered_lft = ci->ifa_prefered;
2976 }
2977
2978 if (nlh->nlmsg_flags & NLM_F_REPLACE) {
2979 int ret;
2980 ret = inet6_addr_modify(ifm->ifa_index, pfx,
2981 prefered_lft, valid_lft);
2982 if (ret == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE))
2983 return ret;
2984 }
2985
2986 return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen,
2987 prefered_lft, valid_lft);
2988
2888} 2989}
2889 2990
2890/* Maximum length of ifa_cacheinfo attributes */ 2991/* Maximum length of ifa_cacheinfo attributes */
@@ -3121,6 +3222,62 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
3121 return inet6_dump_addr(skb, cb, type); 3222 return inet6_dump_addr(skb, cb, type);
3122} 3223}
3123 3224
3225static int inet6_rtm_getaddr(struct sk_buff *in_skb,
3226 struct nlmsghdr* nlh, void *arg)
3227{
3228 struct rtattr **rta = arg;
3229 struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
3230 struct in6_addr *addr = NULL;
3231 struct net_device *dev = NULL;
3232 struct inet6_ifaddr *ifa;
3233 struct sk_buff *skb;
3234 int size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE);
3235 int err;
3236
3237 if (rta[IFA_ADDRESS-1]) {
3238 if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*addr))
3239 return -EINVAL;
3240 addr = RTA_DATA(rta[IFA_ADDRESS-1]);
3241 }
3242 if (rta[IFA_LOCAL-1]) {
3243 if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*addr) ||
3244 (addr && memcmp(addr, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*addr))))
3245 return -EINVAL;
3246 addr = RTA_DATA(rta[IFA_LOCAL-1]);
3247 }
3248 if (addr == NULL)
3249 return -EINVAL;
3250
3251 if (ifm->ifa_index)
3252 dev = __dev_get_by_index(ifm->ifa_index);
3253
3254 if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL)
3255 return -EADDRNOTAVAIL;
3256
3257 if ((skb = alloc_skb(size, GFP_KERNEL)) == NULL) {
3258 err = -ENOBUFS;
3259 goto out;
3260 }
3261
3262 NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
3263 err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
3264 nlh->nlmsg_seq, RTM_NEWADDR, 0);
3265 if (err < 0) {
3266 err = -EMSGSIZE;
3267 goto out_free;
3268 }
3269
3270 err = netlink_unicast(rtnl, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
3271 if (err > 0)
3272 err = 0;
3273out:
3274 in6_ifa_put(ifa);
3275 return err;
3276out_free:
3277 kfree_skb(skb);
3278 goto out;
3279}
3280
3124static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa) 3281static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
3125{ 3282{
3126 struct sk_buff *skb; 3283 struct sk_buff *skb;
@@ -3363,7 +3520,8 @@ static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
3363 [RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, }, 3520 [RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, },
3364 [RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, }, 3521 [RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, },
3365 [RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, }, 3522 [RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, },
3366 [RTM_GETADDR - RTM_BASE] = { .dumpit = inet6_dump_ifaddr, }, 3523 [RTM_GETADDR - RTM_BASE] = { .doit = inet6_rtm_getaddr,
3524 .dumpit = inet6_dump_ifaddr, },
3367 [RTM_GETMULTICAST - RTM_BASE] = { .dumpit = inet6_dump_ifmcaddr, }, 3525 [RTM_GETMULTICAST - RTM_BASE] = { .dumpit = inet6_dump_ifmcaddr, },
3368 [RTM_GETANYCAST - RTM_BASE] = { .dumpit = inet6_dump_ifacaddr, }, 3526 [RTM_GETANYCAST - RTM_BASE] = { .dumpit = inet6_dump_ifacaddr, },
3369 [RTM_NEWROUTE - RTM_BASE] = { .doit = inet6_rtm_newroute, }, 3527 [RTM_NEWROUTE - RTM_BASE] = { .doit = inet6_rtm_newroute, },
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 5a0ba58b86cc..ac85e9c532c2 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -658,7 +658,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
658 return err; 658 return err;
659 } 659 }
660 660
661 ip6_dst_store(sk, dst, NULL); 661 __ip6_dst_store(sk, dst, NULL);
662 } 662 }
663 663
664 return 0; 664 return 0;
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 5c950cc79d80..bf491077b822 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -185,7 +185,7 @@ int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
185 return err; 185 return err;
186 } 186 }
187 187
188 ip6_dst_store(sk, dst, NULL); 188 __ip6_dst_store(sk, dst, NULL);
189 } 189 }
190 190
191 skb->dst = dst_clone(dst); 191 skb->dst = dst_clone(dst);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 3bc74ce78800..69451af6abe7 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -356,6 +356,7 @@ int ip6_forward(struct sk_buff *skb)
356 skb->dev = dst->dev; 356 skb->dev = dst->dev;
357 icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT, 357 icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
358 0, skb->dev); 358 0, skb->dev);
359 IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
359 360
360 kfree_skb(skb); 361 kfree_skb(skb);
361 return -ETIMEDOUT; 362 return -ETIMEDOUT;
@@ -595,6 +596,9 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
595 } 596 }
596 597
597 err = output(skb); 598 err = output(skb);
599 if(!err)
600 IP6_INC_STATS(IPSTATS_MIB_FRAGCREATES);
601
598 if (err || !frag) 602 if (err || !frag)
599 break; 603 break;
600 604
@@ -706,12 +710,11 @@ slow_path:
706 /* 710 /*
707 * Put this fragment into the sending queue. 711 * Put this fragment into the sending queue.
708 */ 712 */
709
710 IP6_INC_STATS(IPSTATS_MIB_FRAGCREATES);
711
712 err = output(frag); 713 err = output(frag);
713 if (err) 714 if (err)
714 goto fail; 715 goto fail;
716
717 IP6_INC_STATS(IPSTATS_MIB_FRAGCREATES);
715 } 718 }
716 kfree_skb(skb); 719 kfree_skb(skb);
717 IP6_INC_STATS(IPSTATS_MIB_FRAGOKS); 720 IP6_INC_STATS(IPSTATS_MIB_FRAGOKS);
@@ -723,48 +726,51 @@ fail:
723 return err; 726 return err;
724} 727}
725 728
726int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi *fl) 729static struct dst_entry *ip6_sk_dst_check(struct sock *sk,
730 struct dst_entry *dst,
731 struct flowi *fl)
727{ 732{
728 int err = 0; 733 struct ipv6_pinfo *np = inet6_sk(sk);
734 struct rt6_info *rt = (struct rt6_info *)dst;
729 735
730 *dst = NULL; 736 if (!dst)
731 if (sk) { 737 goto out;
732 struct ipv6_pinfo *np = inet6_sk(sk); 738
733 739 /* Yes, checking route validity in not connected
734 *dst = sk_dst_check(sk, np->dst_cookie); 740 * case is not very simple. Take into account,
735 if (*dst) { 741 * that we do not support routing by source, TOS,
736 struct rt6_info *rt = (struct rt6_info*)*dst; 742 * and MSG_DONTROUTE --ANK (980726)
737 743 *
738 /* Yes, checking route validity in not connected 744 * 1. If route was host route, check that
739 * case is not very simple. Take into account, 745 * cached destination is current.
740 * that we do not support routing by source, TOS, 746 * If it is network route, we still may
741 * and MSG_DONTROUTE --ANK (980726) 747 * check its validity using saved pointer
742 * 748 * to the last used address: daddr_cache.
743 * 1. If route was host route, check that 749 * We do not want to save whole address now,
744 * cached destination is current. 750 * (because main consumer of this service
745 * If it is network route, we still may 751 * is tcp, which has not this problem),
746 * check its validity using saved pointer 752 * so that the last trick works only on connected
747 * to the last used address: daddr_cache. 753 * sockets.
748 * We do not want to save whole address now, 754 * 2. oif also should be the same.
749 * (because main consumer of this service 755 */
750 * is tcp, which has not this problem), 756 if (((rt->rt6i_dst.plen != 128 ||
751 * so that the last trick works only on connected 757 !ipv6_addr_equal(&fl->fl6_dst, &rt->rt6i_dst.addr))
752 * sockets. 758 && (np->daddr_cache == NULL ||
753 * 2. oif also should be the same. 759 !ipv6_addr_equal(&fl->fl6_dst, np->daddr_cache)))
754 */ 760 || (fl->oif && fl->oif != dst->dev->ifindex)) {
755 if (((rt->rt6i_dst.plen != 128 || 761 dst_release(dst);
756 !ipv6_addr_equal(&fl->fl6_dst, 762 dst = NULL;
757 &rt->rt6i_dst.addr))
758 && (np->daddr_cache == NULL ||
759 !ipv6_addr_equal(&fl->fl6_dst,
760 np->daddr_cache)))
761 || (fl->oif && fl->oif != (*dst)->dev->ifindex)) {
762 dst_release(*dst);
763 *dst = NULL;
764 }
765 }
766 } 763 }
767 764
765out:
766 return dst;
767}
768
769static int ip6_dst_lookup_tail(struct sock *sk,
770 struct dst_entry **dst, struct flowi *fl)
771{
772 int err;
773
768 if (*dst == NULL) 774 if (*dst == NULL)
769 *dst = ip6_route_output(sk, fl); 775 *dst = ip6_route_output(sk, fl);
770 776
@@ -773,7 +779,6 @@ int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi *fl)
773 779
774 if (ipv6_addr_any(&fl->fl6_src)) { 780 if (ipv6_addr_any(&fl->fl6_src)) {
775 err = ipv6_get_saddr(*dst, &fl->fl6_dst, &fl->fl6_src); 781 err = ipv6_get_saddr(*dst, &fl->fl6_dst, &fl->fl6_src);
776
777 if (err) 782 if (err)
778 goto out_err_release; 783 goto out_err_release;
779 } 784 }
@@ -786,8 +791,48 @@ out_err_release:
786 return err; 791 return err;
787} 792}
788 793
794/**
795 * ip6_dst_lookup - perform route lookup on flow
796 * @sk: socket which provides route info
797 * @dst: pointer to dst_entry * for result
798 * @fl: flow to lookup
799 *
800 * This function performs a route lookup on the given flow.
801 *
802 * It returns zero on success, or a standard errno code on error.
803 */
804int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi *fl)
805{
806 *dst = NULL;
807 return ip6_dst_lookup_tail(sk, dst, fl);
808}
789EXPORT_SYMBOL_GPL(ip6_dst_lookup); 809EXPORT_SYMBOL_GPL(ip6_dst_lookup);
790 810
811/**
812 * ip6_sk_dst_lookup - perform socket cached route lookup on flow
813 * @sk: socket which provides the dst cache and route info
814 * @dst: pointer to dst_entry * for result
815 * @fl: flow to lookup
816 *
817 * This function performs a route lookup on the given flow with the
818 * possibility of using the cached route in the socket if it is valid.
819 * It will take the socket dst lock when operating on the dst cache.
820 * As a result, this function can only be used in process context.
821 *
822 * It returns zero on success, or a standard errno code on error.
823 */
824int ip6_sk_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi *fl)
825{
826 *dst = NULL;
827 if (sk) {
828 *dst = sk_dst_check(sk, inet6_sk(sk)->dst_cookie);
829 *dst = ip6_sk_dst_check(sk, *dst, fl);
830 }
831
832 return ip6_dst_lookup_tail(sk, dst, fl);
833}
834EXPORT_SYMBOL_GPL(ip6_sk_dst_lookup);
835
791static inline int ip6_ufo_append_data(struct sock *sk, 836static inline int ip6_ufo_append_data(struct sock *sk,
792 int getfrag(void *from, char *to, int offset, int len, 837 int getfrag(void *from, char *to, int offset, int len,
793 int odd, struct sk_buff *skb), 838 int odd, struct sk_buff *skb),
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 87c39c978cd0..4b163711f3a8 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -53,6 +53,7 @@
53#include <linux/rtnetlink.h> 53#include <linux/rtnetlink.h>
54#include <net/dst.h> 54#include <net/dst.h>
55#include <net/xfrm.h> 55#include <net/xfrm.h>
56#include <net/netevent.h>
56 57
57#include <asm/uaccess.h> 58#include <asm/uaccess.h>
58 59
@@ -742,6 +743,7 @@ static void ip6_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
742 dst->metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG; 743 dst->metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
743 } 744 }
744 dst->metrics[RTAX_MTU-1] = mtu; 745 dst->metrics[RTAX_MTU-1] = mtu;
746 call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
745 } 747 }
746} 748}
747 749
@@ -1155,6 +1157,7 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *saddr,
1155 struct rt6_info *rt, *nrt = NULL; 1157 struct rt6_info *rt, *nrt = NULL;
1156 int strict; 1158 int strict;
1157 struct fib6_node *fn; 1159 struct fib6_node *fn;
1160 struct netevent_redirect netevent;
1158 1161
1159 /* 1162 /*
1160 * Get the "current" route for this destination and 1163 * Get the "current" route for this destination and
@@ -1252,6 +1255,10 @@ restart:
1252 if (ip6_ins_rt(nrt, NULL, NULL, NULL)) 1255 if (ip6_ins_rt(nrt, NULL, NULL, NULL))
1253 goto out; 1256 goto out;
1254 1257
1258 netevent.old = &rt->u.dst;
1259 netevent.new = &nrt->u.dst;
1260 call_netevent_notifiers(NETEVENT_REDIRECT, &netevent);
1261
1255 if (rt->rt6i_flags&RTF_CACHE) { 1262 if (rt->rt6i_flags&RTF_CACHE) {
1256 ip6_del_rt(rt, NULL, NULL, NULL); 1263 ip6_del_rt(rt, NULL, NULL, NULL);
1257 return; 1264 return;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 923989d0520d..b843a650be71 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -270,7 +270,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
270 inet->rcv_saddr = LOOPBACK4_IPV6; 270 inet->rcv_saddr = LOOPBACK4_IPV6;
271 271
272 sk->sk_gso_type = SKB_GSO_TCPV6; 272 sk->sk_gso_type = SKB_GSO_TCPV6;
273 ip6_dst_store(sk, dst, NULL); 273 __ip6_dst_store(sk, dst, NULL);
274 274
275 icsk->icsk_ext_hdr_len = 0; 275 icsk->icsk_ext_hdr_len = 0;
276 if (np->opt) 276 if (np->opt)
@@ -427,7 +427,6 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
427 case TCP_SYN_RECV: /* Cannot happen. 427 case TCP_SYN_RECV: /* Cannot happen.
428 It can, it SYNs are crossed. --ANK */ 428 It can, it SYNs are crossed. --ANK */
429 if (!sock_owned_by_user(sk)) { 429 if (!sock_owned_by_user(sk)) {
430 TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
431 sk->sk_err = err; 430 sk->sk_err = err;
432 sk->sk_error_report(sk); /* Wake people up to see the error (see connect in sock.c) */ 431 sk->sk_error_report(sk); /* Wake people up to see the error (see connect in sock.c) */
433 432
@@ -831,7 +830,6 @@ drop:
831 if (req) 830 if (req)
832 reqsk_free(req); 831 reqsk_free(req);
833 832
834 TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
835 return 0; /* don't send reset */ 833 return 0; /* don't send reset */
836} 834}
837 835
@@ -947,7 +945,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
947 */ 945 */
948 946
949 sk->sk_gso_type = SKB_GSO_TCPV6; 947 sk->sk_gso_type = SKB_GSO_TCPV6;
950 ip6_dst_store(newsk, dst, NULL); 948 __ip6_dst_store(newsk, dst, NULL);
951 949
952 newtcp6sk = (struct tcp6_sock *)newsk; 950 newtcp6sk = (struct tcp6_sock *)newsk;
953 inet_sk(newsk)->pinet6 = &newtcp6sk->inet6; 951 inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index ccc57f434cd3..3d54f246411e 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -782,7 +782,7 @@ do_udp_sendmsg:
782 connected = 0; 782 connected = 0;
783 } 783 }
784 784
785 err = ip6_dst_lookup(sk, &dst, fl); 785 err = ip6_sk_dst_lookup(sk, &dst, fl);
786 if (err) 786 if (err)
787 goto out; 787 goto out;
788 if (final_p) 788 if (final_p)
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 0eea60ea9ebc..c8c8b44a0f58 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -125,7 +125,7 @@ static int xfrm6_output_finish(struct sk_buff *skb)
125 if (!skb_is_gso(skb)) 125 if (!skb_is_gso(skb))
126 return xfrm6_output_finish2(skb); 126 return xfrm6_output_finish2(skb);
127 127
128 skb->protocol = htons(ETH_P_IP); 128 skb->protocol = htons(ETH_P_IPV6);
129 segs = skb_gso_segment(skb, 0); 129 segs = skb_gso_segment(skb, 0);
130 kfree_skb(skb); 130 kfree_skb(skb);
131 if (unlikely(IS_ERR(segs))) 131 if (unlikely(IS_ERR(segs)))