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-rw-r--r--net/ipv6/addrconf.c12
-rw-r--r--net/ipv6/af_inet6.c20
-rw-r--r--net/ipv6/icmp.c17
-rw-r--r--net/ipv6/ip6_fib.c16
-rw-r--r--net/ipv6/ip6_input.c6
-rw-r--r--net/ipv6/ip6_output.c44
-rw-r--r--net/ipv6/ip6_tunnel.c6
-rw-r--r--net/ipv6/ip6mr.c11
-rw-r--r--net/ipv6/ipv6_sockglue.c5
-rw-r--r--net/ipv6/mcast.c1
-rw-r--r--net/ipv6/ndisc.c24
-rw-r--r--net/ipv6/netfilter/ip6_tables.c48
-rw-r--r--net/ipv6/netfilter/ip6t_eui64.c9
-rw-r--r--net/ipv6/netfilter/ip6table_filter.c10
-rw-r--r--net/ipv6/netfilter/ip6table_mangle.c16
-rw-r--r--net/ipv6/netfilter/ip6table_raw.c10
-rw-r--r--net/ipv6/netfilter/ip6table_security.c12
-rw-r--r--net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c18
-rw-r--r--net/ipv6/proc.c4
-rw-r--r--net/ipv6/protocol.c15
-rw-r--r--net/ipv6/raw.c9
-rw-r--r--net/ipv6/route.c34
-rw-r--r--net/ipv6/sit.c11
-rw-r--r--net/ipv6/sysctl_net_ipv6.c4
-rw-r--r--net/ipv6/tcp_ipv6.c21
-rw-r--r--net/ipv6/udp.c158
-rw-r--r--net/ipv6/xfrm6_policy.c38
27 files changed, 374 insertions, 205 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 43b3c9f89c12..c9b369034a40 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1371,12 +1371,14 @@ struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *add
/* Gets referenced address, destroys ifaddr */
-static void addrconf_dad_stop(struct inet6_ifaddr *ifp)
+static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
{
if (ifp->flags&IFA_F_PERMANENT) {
spin_lock_bh(&ifp->lock);
addrconf_del_timer(ifp);
ifp->flags |= IFA_F_TENTATIVE;
+ if (dad_failed)
+ ifp->flags |= IFA_F_DADFAILED;
spin_unlock_bh(&ifp->lock);
in6_ifa_put(ifp);
#ifdef CONFIG_IPV6_PRIVACY
@@ -1422,7 +1424,7 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp)
}
}
- addrconf_dad_stop(ifp);
+ addrconf_dad_stop(ifp, 1);
}
/* Join to solicited addr multicast group. */
@@ -2778,7 +2780,7 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
idev->cnf.accept_dad < 1 ||
!(ifp->flags&IFA_F_TENTATIVE) ||
ifp->flags & IFA_F_NODAD) {
- ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC);
+ ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
spin_unlock_bh(&ifp->lock);
read_unlock_bh(&idev->lock);
@@ -2795,7 +2797,7 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
* - otherwise, kill it.
*/
in6_ifa_hold(ifp);
- addrconf_dad_stop(ifp);
+ addrconf_dad_stop(ifp, 0);
return;
}
@@ -2829,7 +2831,7 @@ static void addrconf_dad_timer(unsigned long data)
* DAD was successful
*/
- ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC);
+ ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
spin_unlock_bh(&ifp->lock);
read_unlock_bh(&idev->lock);
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 45f9a2a42d56..a123a328aeb3 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -774,6 +774,11 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
struct sk_buff *segs = ERR_PTR(-EINVAL);
struct ipv6hdr *ipv6h;
struct inet6_protocol *ops;
+ int proto;
+ struct frag_hdr *fptr;
+ unsigned int unfrag_ip6hlen;
+ u8 *prevhdr;
+ int offset = 0;
if (!(features & NETIF_F_V6_CSUM))
features &= ~NETIF_F_SG;
@@ -793,10 +798,9 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
__skb_pull(skb, sizeof(*ipv6h));
segs = ERR_PTR(-EPROTONOSUPPORT);
+ proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
rcu_read_lock();
- ops = rcu_dereference(inet6_protos[
- ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]);
-
+ ops = rcu_dereference(inet6_protos[proto]);
if (likely(ops && ops->gso_segment)) {
skb_reset_transport_header(skb);
segs = ops->gso_segment(skb, features);
@@ -810,6 +814,16 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
ipv6h = ipv6_hdr(skb);
ipv6h->payload_len = htons(skb->len - skb->mac_len -
sizeof(*ipv6h));
+ if (proto == IPPROTO_UDP) {
+ unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);
+ fptr = (struct frag_hdr *)(skb_network_header(skb) +
+ unfrag_ip6hlen);
+ fptr->frag_off = htons(offset);
+ if (skb->next != NULL)
+ fptr->frag_off |= htons(IP6_MF);
+ offset += (ntohs(ipv6h->payload_len) -
+ sizeof(struct frag_hdr));
+ }
}
out:
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index eab62a7a8f06..e2325f6a05fb 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -323,7 +323,7 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
int iif = 0;
int addr_type = 0;
int len;
- int hlimit, tclass;
+ int hlimit;
int err = 0;
if ((u8 *)hdr < skb->head ||
@@ -469,10 +469,6 @@ route_done:
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
- tclass = np->tclass;
- if (tclass < 0)
- tclass = 0;
-
msg.skb = skb;
msg.offset = skb_network_offset(skb);
msg.type = type;
@@ -488,8 +484,8 @@ route_done:
err = ip6_append_data(sk, icmpv6_getfrag, &msg,
len + sizeof(struct icmp6hdr),
- sizeof(struct icmp6hdr),
- hlimit, tclass, NULL, &fl, (struct rt6_info*)dst,
+ sizeof(struct icmp6hdr), hlimit,
+ np->tclass, NULL, &fl, (struct rt6_info*)dst,
MSG_DONTWAIT);
if (err) {
ip6_flush_pending_frames(sk);
@@ -522,7 +518,6 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
struct dst_entry *dst;
int err = 0;
int hlimit;
- int tclass;
saddr = &ipv6_hdr(skb)->daddr;
@@ -562,10 +557,6 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
- tclass = np->tclass;
- if (tclass < 0)
- tclass = 0;
-
idev = in6_dev_get(skb->dev);
msg.skb = skb;
@@ -573,7 +564,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
msg.type = ICMPV6_ECHO_REPLY;
err = ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr),
- sizeof(struct icmp6hdr), hlimit, tclass, NULL, &fl,
+ sizeof(struct icmp6hdr), hlimit, np->tclass, NULL, &fl,
(struct rt6_info*)dst, MSG_DONTWAIT);
if (err) {
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 52ee1dced2ff..0e93ca56eb69 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -164,12 +164,6 @@ static __inline__ void rt6_release(struct rt6_info *rt)
dst_free(&rt->u.dst);
}
-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
-#define FIB_TABLE_HASHSZ 256
-#else
-#define FIB_TABLE_HASHSZ 1
-#endif
-
static void fib6_link_table(struct net *net, struct fib6_table *tb)
{
unsigned int h;
@@ -180,7 +174,7 @@ static void fib6_link_table(struct net *net, struct fib6_table *tb)
*/
rwlock_init(&tb->tb6_lock);
- h = tb->tb6_id & (FIB_TABLE_HASHSZ - 1);
+ h = tb->tb6_id & (FIB6_TABLE_HASHSZ - 1);
/*
* No protection necessary, this is the only list mutatation
@@ -231,7 +225,7 @@ struct fib6_table *fib6_get_table(struct net *net, u32 id)
if (id == 0)
id = RT6_TABLE_MAIN;
- h = id & (FIB_TABLE_HASHSZ - 1);
+ h = id & (FIB6_TABLE_HASHSZ - 1);
rcu_read_lock();
head = &net->ipv6.fib_table_hash[h];
hlist_for_each_entry_rcu(tb, node, head, tb6_hlist) {
@@ -382,7 +376,7 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
arg.net = net;
w->args = &arg;
- for (h = s_h; h < FIB_TABLE_HASHSZ; h++, s_e = 0) {
+ for (h = s_h; h < FIB6_TABLE_HASHSZ; h++, s_e = 0) {
e = 0;
head = &net->ipv6.fib_table_hash[h];
hlist_for_each_entry(tb, node, head, tb6_hlist) {
@@ -1368,7 +1362,7 @@ void fib6_clean_all(struct net *net, int (*func)(struct rt6_info *, void *arg),
unsigned int h;
rcu_read_lock();
- for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
+ for (h = 0; h < FIB6_TABLE_HASHSZ; h++) {
head = &net->ipv6.fib_table_hash[h];
hlist_for_each_entry_rcu(table, node, head, tb6_hlist) {
write_lock_bh(&table->tb6_lock);
@@ -1483,7 +1477,7 @@ static int fib6_net_init(struct net *net)
if (!net->ipv6.rt6_stats)
goto out_timer;
- net->ipv6.fib_table_hash = kcalloc(FIB_TABLE_HASHSZ,
+ net->ipv6.fib_table_hash = kcalloc(FIB6_TABLE_HASHSZ,
sizeof(*net->ipv6.fib_table_hash),
GFP_KERNEL);
if (!net->ipv6.fib_table_hash)
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 6d6a4277c677..2d9cbaa67edb 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -63,7 +63,7 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
if (skb->pkt_type == PACKET_OTHERHOST) {
kfree_skb(skb);
- return 0;
+ return NET_RX_DROP;
}
rcu_read_lock();
@@ -133,7 +133,7 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
if (ipv6_parse_hopopts(skb) < 0) {
IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_INHDRERRORS);
rcu_read_unlock();
- return 0;
+ return NET_RX_DROP;
}
}
@@ -149,7 +149,7 @@ err:
drop:
rcu_read_unlock();
kfree_skb(skb);
- return 0;
+ return NET_RX_DROP;
}
/*
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 87f8419a68fd..cd48801a8d6f 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -57,18 +57,6 @@
static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
-static __inline__ void ipv6_select_ident(struct sk_buff *skb, struct frag_hdr *fhdr)
-{
- static u32 ipv6_fragmentation_id = 1;
- static DEFINE_SPINLOCK(ip6_id_lock);
-
- spin_lock_bh(&ip6_id_lock);
- fhdr->identification = htonl(ipv6_fragmentation_id);
- if (++ipv6_fragmentation_id == 0)
- ipv6_fragmentation_id = 1;
- spin_unlock_bh(&ip6_id_lock);
-}
-
int __ip6_local_out(struct sk_buff *skb)
{
int len;
@@ -206,7 +194,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
struct ipv6hdr *hdr;
u8 proto = fl->proto;
int seg_len = skb->len;
- int hlimit, tclass;
+ int hlimit = -1;
+ int tclass = 0;
u32 mtu;
if (opt) {
@@ -249,19 +238,13 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
/*
* Fill in the IPv6 header
*/
-
- hlimit = -1;
- if (np)
+ if (np) {
+ tclass = np->tclass;
hlimit = np->hop_limit;
+ }
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
- tclass = -1;
- if (np)
- tclass = np->tclass;
- if (tclass < 0)
- tclass = 0;
-
*(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | fl->fl6_flowlabel;
hdr->payload_len = htons(seg_len);
@@ -706,7 +689,7 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
skb_reset_network_header(skb);
memcpy(skb_network_header(skb), tmp_hdr, hlen);
- ipv6_select_ident(skb, fh);
+ ipv6_select_ident(fh);
fh->nexthdr = nexthdr;
fh->reserved = 0;
fh->frag_off = htons(IP6_MF);
@@ -844,7 +827,7 @@ slow_path:
fh->nexthdr = nexthdr;
fh->reserved = 0;
if (!frag_id) {
- ipv6_select_ident(skb, fh);
+ ipv6_select_ident(fh);
frag_id = fh->identification;
} else
fh->identification = frag_id;
@@ -1087,11 +1070,13 @@ static inline int ip6_ufo_append_data(struct sock *sk,
if (!err) {
struct frag_hdr fhdr;
- /* specify the length of each IP datagram fragment*/
- skb_shinfo(skb)->gso_size = mtu - fragheaderlen -
- sizeof(struct frag_hdr);
+ /* Specify the length of each IPv6 datagram fragment.
+ * It has to be a multiple of 8.
+ */
+ skb_shinfo(skb)->gso_size = (mtu - fragheaderlen -
+ sizeof(struct frag_hdr)) & ~7;
skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
- ipv6_select_ident(skb, &fhdr);
+ ipv6_select_ident(&fhdr);
skb_shinfo(skb)->ip6_frag_id = fhdr.identification;
__skb_queue_tail(&sk->sk_write_queue, skb);
@@ -1526,7 +1511,7 @@ int ip6_push_pending_frames(struct sock *sk)
err = ip6_local_out(skb);
if (err) {
if (err > 0)
- err = np->recverr ? net_xmit_errno(err) : 0;
+ err = net_xmit_errno(err);
if (err)
goto error;
}
@@ -1535,6 +1520,7 @@ out:
ip6_cork_release(inet, np);
return err;
error:
+ IP6_INC_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
goto out;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 51f410e7775a..7d25bbe32110 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1036,7 +1036,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}
-static int
+static netdev_tx_t
ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
@@ -1063,14 +1063,14 @@ ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
goto tx_err;
t->recursion--;
- return 0;
+ return NETDEV_TX_OK;
tx_err:
stats->tx_errors++;
stats->tx_dropped++;
kfree_skb(skb);
t->recursion--;
- return 0;
+ return NETDEV_TX_OK;
}
static void ip6_tnl_set_cap(struct ip6_tnl *t)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index c769f155c698..5c8d73730c75 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -204,7 +204,7 @@ static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)
return 0;
}
-static struct seq_operations ip6mr_vif_seq_ops = {
+static const struct seq_operations ip6mr_vif_seq_ops = {
.start = ip6mr_vif_seq_start,
.next = ip6mr_vif_seq_next,
.stop = ip6mr_vif_seq_stop,
@@ -217,7 +217,7 @@ static int ip6mr_vif_open(struct inode *inode, struct file *file)
sizeof(struct ipmr_vif_iter));
}
-static struct file_operations ip6mr_vif_fops = {
+static const struct file_operations ip6mr_vif_fops = {
.owner = THIS_MODULE,
.open = ip6mr_vif_open,
.read = seq_read,
@@ -341,7 +341,7 @@ static int ipmr_mfc_open(struct inode *inode, struct file *file)
sizeof(struct ipmr_mfc_iter));
}
-static struct file_operations ip6mr_mfc_fops = {
+static const struct file_operations ip6mr_mfc_fops = {
.owner = THIS_MODULE,
.open = ipmr_mfc_open,
.read = seq_read,
@@ -416,7 +416,8 @@ static struct inet6_protocol pim6_protocol = {
/* Service routines creating virtual interfaces: PIMREG */
-static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t reg_vif_xmit(struct sk_buff *skb,
+ struct net_device *dev)
{
struct net *net = dev_net(dev);
@@ -427,7 +428,7 @@ static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
static const struct net_device_ops reg_vif_netdev_ops = {
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index a7fdf9a27f15..f5e0682b402d 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -315,6 +315,9 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
goto e_inval;
if (val < -1 || val > 0xff)
goto e_inval;
+ /* RFC 3542, 6.5: default traffic class of 0x0 */
+ if (val == -1)
+ val = 0;
np->tclass = val;
retv = 0;
break;
@@ -1037,8 +1040,6 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
case IPV6_TCLASS:
val = np->tclass;
- if (val < 0)
- val = 0;
break;
case IPV6_RECVTCLASS:
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 4b264ed40a8c..71c3dacec1ed 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -2107,7 +2107,6 @@ static int ip6_mc_add_src(struct inet6_dev *idev, struct in6_addr *pmca,
for (j=0; j<i; j++)
(void) ip6_mc_del1_src(pmc, sfmode, &psfsrc[i]);
} else if (isexclude != (pmc->mca_sfcount[MCAST_EXCLUDE] != 0)) {
- struct inet6_dev *idev = pmc->idev;
struct ip6_sf_list *psf;
/* filter mode change */
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 9eb68e92cc18..7015478797f6 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -98,7 +98,7 @@ static int pndisc_constructor(struct pneigh_entry *n);
static void pndisc_destructor(struct pneigh_entry *n);
static void pndisc_redo(struct sk_buff *skb);
-static struct neigh_ops ndisc_generic_ops = {
+static const struct neigh_ops ndisc_generic_ops = {
.family = AF_INET6,
.solicit = ndisc_solicit,
.error_report = ndisc_error_report,
@@ -108,7 +108,7 @@ static struct neigh_ops ndisc_generic_ops = {
.queue_xmit = dev_queue_xmit,
};
-static struct neigh_ops ndisc_hh_ops = {
+static const struct neigh_ops ndisc_hh_ops = {
.family = AF_INET6,
.solicit = ndisc_solicit,
.error_report = ndisc_error_report,
@@ -119,7 +119,7 @@ static struct neigh_ops ndisc_hh_ops = {
};
-static struct neigh_ops ndisc_direct_ops = {
+static const struct neigh_ops ndisc_direct_ops = {
.family = AF_INET6,
.output = dev_queue_xmit,
.connected_output = dev_queue_xmit,
@@ -955,8 +955,8 @@ static void ndisc_recv_na(struct sk_buff *skb)
*/
if (skb->pkt_type != PACKET_LOOPBACK)
ND_PRINTK1(KERN_WARNING
- "ICMPv6 NA: someone advertises our address on %s!\n",
- ifp->idev->dev->name);
+ "ICMPv6 NA: someone advertises our address %pI6 on %s!\n",
+ &ifp->addr, ifp->idev->dev->name);
in6_ifa_put(ifp);
return;
}
@@ -1151,10 +1151,6 @@ static void ndisc_router_discovery(struct sk_buff *skb)
skb->dev->name);
return;
}
- if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_ra) {
- in6_dev_put(in6_dev);
- return;
- }
if (!ndisc_parse_options(opt, optlen, &ndopts)) {
in6_dev_put(in6_dev);
@@ -1163,6 +1159,10 @@ static void ndisc_router_discovery(struct sk_buff *skb)
return;
}
+ /* skip route and link configuration on routers */
+ if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_ra)
+ goto skip_linkparms;
+
#ifdef CONFIG_IPV6_NDISC_NODETYPE
/* skip link-specific parameters from interior routers */
if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT)
@@ -1283,9 +1283,7 @@ skip_defrtr:
}
}
-#ifdef CONFIG_IPV6_NDISC_NODETYPE
skip_linkparms:
-#endif
/*
* Process options.
@@ -1312,6 +1310,10 @@ skip_linkparms:
NEIGH_UPDATE_F_ISROUTER);
}
+ /* skip route and link configuration on routers */
+ if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_ra)
+ goto out;
+
#ifdef CONFIG_IPV6_ROUTE_INFO
if (in6_dev->cnf.accept_ra_rtr_pref && ndopts.nd_opts_ri) {
struct nd_opt_hdr *p;
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index ced1f2c0cb65..cc9f8ef303fd 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -8,7 +8,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/capability.h>
#include <linux/in.h>
#include <linux/skbuff.h>
@@ -222,16 +222,11 @@ get_entry(void *base, unsigned int offset)
/* All zeroes == unconditional rule. */
/* Mildly perf critical (only if packet tracing is on) */
-static inline int
-unconditional(const struct ip6t_ip6 *ipv6)
+static inline bool unconditional(const struct ip6t_ip6 *ipv6)
{
- unsigned int i;
-
- for (i = 0; i < sizeof(*ipv6); i++)
- if (((char *)ipv6)[i])
- break;
+ static const struct ip6t_ip6 uncond;
- return (i == sizeof(*ipv6));
+ return memcmp(ipv6, &uncond, sizeof(uncond)) == 0;
}
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
@@ -745,6 +740,21 @@ find_check_entry(struct ip6t_entry *e, const char *name, unsigned int size,
return ret;
}
+static bool check_underflow(struct ip6t_entry *e)
+{
+ const struct ip6t_entry_target *t;
+ unsigned int verdict;
+
+ if (!unconditional(&e->ipv6))
+ return false;
+ t = ip6t_get_target(e);
+ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
+ return false;
+ verdict = ((struct ip6t_standard_target *)t)->verdict;
+ verdict = -verdict - 1;
+ return verdict == NF_DROP || verdict == NF_ACCEPT;
+}
+
static int
check_entry_size_and_hooks(struct ip6t_entry *e,
struct xt_table_info *newinfo,
@@ -752,6 +762,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
unsigned char *limit,
const unsigned int *hook_entries,
const unsigned int *underflows,
+ unsigned int valid_hooks,
unsigned int *i)
{
unsigned int h;
@@ -771,15 +782,21 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
/* Check hooks & underflows */
for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+ if (!(valid_hooks & (1 << h)))
+ continue;
if ((unsigned char *)e - base == hook_entries[h])
newinfo->hook_entry[h] = hook_entries[h];
- if ((unsigned char *)e - base == underflows[h])
+ if ((unsigned char *)e - base == underflows[h]) {
+ if (!check_underflow(e)) {
+ pr_err("Underflows must be unconditional and "
+ "use the STANDARD target with "
+ "ACCEPT/DROP\n");
+ return -EINVAL;
+ }
newinfo->underflow[h] = underflows[h];
+ }
}
- /* FIXME: underflows must be unconditional, standard verdicts
- < 0 (not IP6T_RETURN). --RR */
-
/* Clear counters and comefrom */
e->counters = ((struct xt_counters) { 0, 0 });
e->comefrom = 0;
@@ -842,7 +859,7 @@ translate_table(const char *name,
newinfo,
entry0,
entry0 + size,
- hook_entries, underflows, &i);
+ hook_entries, underflows, valid_hooks, &i);
if (ret != 0)
return ret;
@@ -2083,7 +2100,8 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
return ret;
}
-struct xt_table *ip6t_register_table(struct net *net, struct xt_table *table,
+struct xt_table *ip6t_register_table(struct net *net,
+ const struct xt_table *table,
const struct ip6t_replace *repl)
{
int ret;
diff --git a/net/ipv6/netfilter/ip6t_eui64.c b/net/ipv6/netfilter/ip6t_eui64.c
index db610bacbcce..ca287f6d2bce 100644
--- a/net/ipv6/netfilter/ip6t_eui64.c
+++ b/net/ipv6/netfilter/ip6t_eui64.c
@@ -23,7 +23,6 @@ static bool
eui64_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
{
unsigned char eui64[8];
- int i = 0;
if (!(skb_mac_header(skb) >= skb->head &&
skb_mac_header(skb) + ETH_HLEN <= skb->data) &&
@@ -42,12 +41,8 @@ eui64_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
eui64[4] = 0xfe;
eui64[0] ^= 0x02;
- i = 0;
- while (ipv6_hdr(skb)->saddr.s6_addr[8 + i] == eui64[i]
- && i < 8)
- i++;
-
- if (i == 8)
+ if (!memcmp(ipv6_hdr(skb)->saddr.s6_addr + 8, eui64,
+ sizeof(eui64)))
return true;
}
}
diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c
index ef5a0a32bf8e..6f4383ad86f9 100644
--- a/net/ipv6/netfilter/ip6table_filter.c
+++ b/net/ipv6/netfilter/ip6table_filter.c
@@ -51,11 +51,11 @@ static struct
.term = IP6T_ERROR_INIT, /* ERROR */
};
-static struct xt_table packet_filter = {
+static const struct xt_table packet_filter = {
.name = "filter",
.valid_hooks = FILTER_VALID_HOOKS,
.me = THIS_MODULE,
- .af = AF_INET6,
+ .af = NFPROTO_IPV6,
};
/* The work comes in here from netfilter.c. */
@@ -95,21 +95,21 @@ static struct nf_hook_ops ip6t_ops[] __read_mostly = {
{
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_FILTER,
},
{
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_FORWARD,
.priority = NF_IP6_PRI_FILTER,
},
{
.hook = ip6t_local_out_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_FILTER,
},
diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c
index ab0d398a2ba7..0ad91433ed61 100644
--- a/net/ipv6/netfilter/ip6table_mangle.c
+++ b/net/ipv6/netfilter/ip6table_mangle.c
@@ -21,7 +21,7 @@ MODULE_DESCRIPTION("ip6tables mangle table");
(1 << NF_INET_LOCAL_OUT) | \
(1 << NF_INET_POST_ROUTING))
-static struct
+static const struct
{
struct ip6t_replace repl;
struct ip6t_standard entries[5];
@@ -57,11 +57,11 @@ static struct
.term = IP6T_ERROR_INIT, /* ERROR */
};
-static struct xt_table packet_mangler = {
+static const struct xt_table packet_mangler = {
.name = "mangle",
.valid_hooks = MANGLE_VALID_HOOKS,
.me = THIS_MODULE,
- .af = AF_INET6,
+ .af = NFPROTO_IPV6,
};
/* The work comes in here from netfilter.c. */
@@ -136,35 +136,35 @@ static struct nf_hook_ops ip6t_ops[] __read_mostly = {
{
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_MANGLE,
},
{
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_MANGLE,
},
{
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_FORWARD,
.priority = NF_IP6_PRI_MANGLE,
},
{
.hook = ip6t_local_out_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_MANGLE,
},
{
.hook = ip6t_post_routing_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_POST_ROUTING,
.priority = NF_IP6_PRI_MANGLE,
},
diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c
index 4b792b6ca321..ed1a1180f3b3 100644
--- a/net/ipv6/netfilter/ip6table_raw.c
+++ b/net/ipv6/netfilter/ip6table_raw.c
@@ -8,7 +8,7 @@
#define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT))
-static struct
+static const struct
{
struct ip6t_replace repl;
struct ip6t_standard entries[2];
@@ -35,11 +35,11 @@ static struct
.term = IP6T_ERROR_INIT, /* ERROR */
};
-static struct xt_table packet_raw = {
+static const struct xt_table packet_raw = {
.name = "raw",
.valid_hooks = RAW_VALID_HOOKS,
.me = THIS_MODULE,
- .af = AF_INET6,
+ .af = NFPROTO_IPV6,
};
/* The work comes in here from netfilter.c. */
@@ -68,14 +68,14 @@ ip6t_local_out_hook(unsigned int hook,
static struct nf_hook_ops ip6t_ops[] __read_mostly = {
{
.hook = ip6t_pre_routing_hook,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_FIRST,
.owner = THIS_MODULE,
},
{
.hook = ip6t_local_out_hook,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_FIRST,
.owner = THIS_MODULE,
diff --git a/net/ipv6/netfilter/ip6table_security.c b/net/ipv6/netfilter/ip6table_security.c
index 0ea37ff15d56..41b444c60934 100644
--- a/net/ipv6/netfilter/ip6table_security.c
+++ b/net/ipv6/netfilter/ip6table_security.c
@@ -26,7 +26,7 @@ MODULE_DESCRIPTION("ip6tables security table, for MAC rules");
(1 << NF_INET_FORWARD) | \
(1 << NF_INET_LOCAL_OUT)
-static struct
+static const struct
{
struct ip6t_replace repl;
struct ip6t_standard entries[3];
@@ -56,11 +56,11 @@ static struct
.term = IP6T_ERROR_INIT, /* ERROR */
};
-static struct xt_table security_table = {
+static const struct xt_table security_table = {
.name = "security",
.valid_hooks = SECURITY_VALID_HOOKS,
.me = THIS_MODULE,
- .af = AF_INET6,
+ .af = NFPROTO_IPV6,
};
static unsigned int
@@ -101,21 +101,21 @@ static struct nf_hook_ops ip6t_ops[] __read_mostly = {
{
.hook = ip6t_local_in_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_SECURITY,
},
{
.hook = ip6t_forward_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_FORWARD,
.priority = NF_IP6_PRI_SECURITY,
},
{
.hook = ip6t_local_out_hook,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_SECURITY,
},
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 2a15c2d66c69..5f2ec208a8c3 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -27,6 +27,7 @@
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
+#include <net/netfilter/nf_log.h>
static bool ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
struct nf_conntrack_tuple *tuple)
@@ -176,8 +177,11 @@ static unsigned int ipv6_confirm(unsigned int hooknum,
}
ret = helper->help(skb, protoff, ct, ctinfo);
- if (ret != NF_ACCEPT)
+ if (ret != NF_ACCEPT) {
+ nf_log_packet(NFPROTO_IPV6, hooknum, skb, in, out, NULL,
+ "nf_ct_%s: dropping packet", helper->name);
return ret;
+ }
out:
/* We've seen it coming out the other side: confirm it */
return nf_conntrack_confirm(skb);
@@ -265,42 +269,42 @@ static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_conntrack_in,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK,
},
{
.hook = ipv6_conntrack_local,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK,
},
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_confirm,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_POST_ROUTING,
.priority = NF_IP6_PRI_LAST,
},
{
.hook = ipv6_confirm,
.owner = THIS_MODULE,
- .pf = PF_INET6,
+ .pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_LAST-1,
},
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 590ddefb7ffc..c9605c3ad91f 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -101,7 +101,7 @@ static struct snmp_mib snmp6_icmp6_list[] = {
};
/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
-static char *icmp6type2name[256] = {
+static const char *const icmp6type2name[256] = {
[ICMPV6_DEST_UNREACH] = "DestUnreachs",
[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
[ICMPV6_TIME_EXCEED] = "TimeExcds",
@@ -144,7 +144,7 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
/* print by name -- deprecated items */
for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
int icmptype;
- char *p;
+ const char *p;
icmptype = i & 0xff;
p = icmp6type2name[icmptype];
diff --git a/net/ipv6/protocol.c b/net/ipv6/protocol.c
index 9ab789159913..568864f722ca 100644
--- a/net/ipv6/protocol.c
+++ b/net/ipv6/protocol.c
@@ -20,20 +20,9 @@
* - Removed unused variable 'inet6_protocol_base'
* - Modified inet6_del_protocol() to correctly maintain copy bit.
*/
-
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/net.h>
-#include <linux/in6.h>
+#include <linux/module.h>
#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-
-#include <net/sock.h>
-#include <net/snmp.h>
-
-#include <net/ipv6.h>
+#include <linux/spinlock.h>
#include <net/protocol.h>
struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index d6c3c1c34b2d..7d675b8d82d3 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -642,7 +642,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
dst_output);
if (err > 0)
- err = np->recverr ? net_xmit_errno(err) : 0;
+ err = net_xmit_errno(err);
if (err)
goto error;
out:
@@ -653,6 +653,8 @@ error_fault:
kfree_skb(skb);
error:
IP6_INC_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
+ if (err == -ENOBUFS && !np->recverr)
+ err = 0;
return err;
}
@@ -877,11 +879,8 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
hlimit = ip6_dst_hoplimit(dst);
}
- if (tclass < 0) {
+ if (tclass < 0)
tclass = np->tclass;
- if (tclass < 0)
- tclass = 0;
- }
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 1473ee0a1f51..9ccfef345560 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -665,7 +665,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *dad
net->ipv6.sysctl.ip6_rt_gc_elasticity = 1;
net->ipv6.sysctl.ip6_rt_gc_min_interval = 0;
- ip6_dst_gc(net->ipv6.ip6_dst_ops);
+ ip6_dst_gc(&net->ipv6.ip6_dst_ops);
net->ipv6.sysctl.ip6_rt_gc_elasticity =
saved_rt_elasticity;
@@ -970,7 +970,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
if (unlikely(idev == NULL))
return NULL;
- rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (unlikely(rt == NULL)) {
in6_dev_put(idev);
goto out;
@@ -1060,7 +1060,7 @@ static void icmp6_clean_all(int (*func)(struct rt6_info *rt, void *arg),
static int ip6_dst_gc(struct dst_ops *ops)
{
unsigned long now = jiffies;
- struct net *net = ops->dst_net;
+ struct net *net = container_of(ops, struct net, ipv6.ip6_dst_ops);
int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval;
int rt_max_size = net->ipv6.sysctl.ip6_rt_max_size;
int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity;
@@ -1154,7 +1154,7 @@ int ip6_route_add(struct fib6_config *cfg)
goto out;
}
- rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt == NULL) {
err = -ENOMEM;
@@ -1643,7 +1643,7 @@ out:
static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
{
struct net *net = dev_net(ort->rt6i_dev);
- struct rt6_info *rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt) {
rt->u.dst.input = ort->u.dst.input;
@@ -1923,7 +1923,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
int anycast)
{
struct net *net = dev_net(idev->dev);
- struct rt6_info *rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
struct neighbour *neigh;
if (rt == NULL)
@@ -2501,7 +2501,7 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
net->ipv6.rt6_stats->fib_rt_alloc,
net->ipv6.rt6_stats->fib_rt_entries,
net->ipv6.rt6_stats->fib_rt_cache,
- atomic_read(&net->ipv6.ip6_dst_ops->entries),
+ atomic_read(&net->ipv6.ip6_dst_ops.entries),
net->ipv6.rt6_stats->fib_discarded_routes);
return 0;
@@ -2637,7 +2637,7 @@ struct ctl_table *ipv6_route_sysctl_init(struct net *net)
if (table) {
table[0].data = &net->ipv6.sysctl.flush_delay;
- table[1].data = &net->ipv6.ip6_dst_ops->gc_thresh;
+ table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh;
table[2].data = &net->ipv6.sysctl.ip6_rt_max_size;
table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout;
@@ -2655,12 +2655,8 @@ static int ip6_route_net_init(struct net *net)
{
int ret = -ENOMEM;
- net->ipv6.ip6_dst_ops = kmemdup(&ip6_dst_ops_template,
- sizeof(*net->ipv6.ip6_dst_ops),
- GFP_KERNEL);
- if (!net->ipv6.ip6_dst_ops)
- goto out;
- net->ipv6.ip6_dst_ops->dst_net = hold_net(net);
+ memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template,
+ sizeof(net->ipv6.ip6_dst_ops));
net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
sizeof(*net->ipv6.ip6_null_entry),
@@ -2669,7 +2665,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_dst_ops;
net->ipv6.ip6_null_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_null_entry;
- net->ipv6.ip6_null_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_null_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
@@ -2679,7 +2675,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_null_entry;
net->ipv6.ip6_prohibit_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_prohibit_entry;
- net->ipv6.ip6_prohibit_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_prohibit_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
sizeof(*net->ipv6.ip6_blk_hole_entry),
@@ -2688,7 +2684,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_prohibit_entry;
net->ipv6.ip6_blk_hole_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
- net->ipv6.ip6_blk_hole_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_blk_hole_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
#endif
net->ipv6.sysctl.flush_delay = 0;
@@ -2717,8 +2713,6 @@ out_ip6_null_entry:
kfree(net->ipv6.ip6_null_entry);
#endif
out_ip6_dst_ops:
- release_net(net->ipv6.ip6_dst_ops->dst_net);
- kfree(net->ipv6.ip6_dst_ops);
goto out;
}
@@ -2733,8 +2727,6 @@ static void ip6_route_net_exit(struct net *net)
kfree(net->ipv6.ip6_prohibit_entry);
kfree(net->ipv6.ip6_blk_hole_entry);
#endif
- release_net(net->ipv6.ip6_dst_ops->dst_net);
- kfree(net->ipv6.ip6_dst_ops);
}
static struct pernet_operations ip6_route_net_ops = {
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 98b7327d0949..0ae4f6448187 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -609,7 +609,8 @@ static inline __be32 try_6to4(struct in6_addr *v6dst)
* and that skb is filled properly by that function.
*/
-static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
+ struct net_device *dev)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
struct net_device_stats *stats = &tunnel->dev->stats;
@@ -753,7 +754,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
stats->tx_dropped++;
dev_kfree_skb(skb);
tunnel->recursion--;
- return 0;
+ return NETDEV_TX_OK;
}
if (skb->sk)
skb_set_owner_w(new_skb, skb->sk);
@@ -778,7 +779,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
iph->version = 4;
iph->ihl = sizeof(struct iphdr)>>2;
if (mtu > IPV6_MIN_MTU)
- iph->frag_off = htons(IP_DF);
+ iph->frag_off = tiph->frag_off;
else
iph->frag_off = 0;
@@ -794,7 +795,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
IPTUNNEL_XMIT();
tunnel->recursion--;
- return 0;
+ return NETDEV_TX_OK;
tx_error_icmp:
dst_link_failure(skb);
@@ -802,7 +803,7 @@ tx_error:
stats->tx_errors++;
dev_kfree_skb(skb);
tunnel->recursion--;
- return 0;
+ return NETDEV_TX_OK;
}
static void ipip6_tunnel_bind_dev(struct net_device *dev)
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index a031034720b4..0dc6a4e5ed4a 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -40,7 +40,7 @@ static ctl_table ipv6_table_template[] = {
{ .ctl_name = 0 }
};
-static ctl_table ipv6_table[] = {
+static ctl_table ipv6_rotable[] = {
{
.ctl_name = NET_IPV6_MLD_MAX_MSF,
.procname = "mld_max_msf",
@@ -130,7 +130,7 @@ int ipv6_sysctl_register(void)
{
int err = -ENOMEM;
- ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_table);
+ ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable);
if (ip6_header == NULL)
goto out;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index d849dd53b788..3aae0f217d61 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -75,11 +75,11 @@ static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
-static struct inet_connection_sock_af_ops ipv6_mapped;
-static struct inet_connection_sock_af_ops ipv6_specific;
+static const struct inet_connection_sock_af_ops ipv6_mapped;
+static const struct inet_connection_sock_af_ops ipv6_specific;
#ifdef CONFIG_TCP_MD5SIG
-static struct tcp_sock_af_ops tcp_sock_ipv6_specific;
-static struct tcp_sock_af_ops tcp_sock_ipv6_mapped_specific;
+static const struct tcp_sock_af_ops tcp_sock_ipv6_specific;
+static const struct tcp_sock_af_ops tcp_sock_ipv6_mapped_specific;
#else
static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(struct sock *sk,
struct in6_addr *addr)
@@ -591,7 +591,7 @@ static int tcp_v6_md5_do_add(struct sock *sk, struct in6_addr *peer,
}
sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
}
- if (tcp_alloc_md5sig_pool() == NULL) {
+ if (tcp_alloc_md5sig_pool(sk) == NULL) {
kfree(newkey);
return -ENOMEM;
}
@@ -894,7 +894,7 @@ struct request_sock_ops tcp6_request_sock_ops __read_mostly = {
};
#ifdef CONFIG_TCP_MD5SIG
-static struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
+static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
.md5_lookup = tcp_v6_reqsk_md5_lookup,
.calc_md5_hash = tcp_v6_md5_hash_skb,
};
@@ -1003,6 +1003,7 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
skb_reserve(buff, MAX_HEADER + sizeof(struct ipv6hdr) + tot_len);
t1 = (struct tcphdr *) skb_push(buff, tot_len);
+ skb_reset_transport_header(skb);
/* Swap the send and the receive. */
memset(t1, 0, sizeof(*t1));
@@ -1760,7 +1761,7 @@ static int tcp_v6_remember_stamp(struct sock *sk)
return 0;
}
-static struct inet_connection_sock_af_ops ipv6_specific = {
+static const struct inet_connection_sock_af_ops ipv6_specific = {
.queue_xmit = inet6_csk_xmit,
.send_check = tcp_v6_send_check,
.rebuild_header = inet6_sk_rebuild_header,
@@ -1780,7 +1781,7 @@ static struct inet_connection_sock_af_ops ipv6_specific = {
};
#ifdef CONFIG_TCP_MD5SIG
-static struct tcp_sock_af_ops tcp_sock_ipv6_specific = {
+static const struct tcp_sock_af_ops tcp_sock_ipv6_specific = {
.md5_lookup = tcp_v6_md5_lookup,
.calc_md5_hash = tcp_v6_md5_hash_skb,
.md5_add = tcp_v6_md5_add_func,
@@ -1792,7 +1793,7 @@ static struct tcp_sock_af_ops tcp_sock_ipv6_specific = {
* TCP over IPv4 via INET6 API
*/
-static struct inet_connection_sock_af_ops ipv6_mapped = {
+static const struct inet_connection_sock_af_ops ipv6_mapped = {
.queue_xmit = ip_queue_xmit,
.send_check = tcp_v4_send_check,
.rebuild_header = inet_sk_rebuild_header,
@@ -1812,7 +1813,7 @@ static struct inet_connection_sock_af_ops ipv6_mapped = {
};
#ifdef CONFIG_TCP_MD5SIG
-static struct tcp_sock_af_ops tcp_sock_ipv6_mapped_specific = {
+static const struct tcp_sock_af_ops tcp_sock_ipv6_mapped_specific = {
.md5_lookup = tcp_v4_md5_lookup,
.calc_md5_hash = tcp_v4_md5_hash_skb,
.md5_add = tcp_v6_md5_add_func,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 33b59bd92c4d..164040613c2e 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -638,6 +638,47 @@ static void udp_v6_flush_pending_frames(struct sock *sk)
}
}
+/**
+ * udp6_hwcsum_outgoing - handle outgoing HW checksumming
+ * @sk: socket we are sending on
+ * @skb: sk_buff containing the filled-in UDP header
+ * (checksum field must be zeroed out)
+ */
+static void udp6_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb,
+ const struct in6_addr *saddr,
+ const struct in6_addr *daddr, int len)
+{
+ unsigned int offset;
+ struct udphdr *uh = udp_hdr(skb);
+ __wsum csum = 0;
+
+ if (skb_queue_len(&sk->sk_write_queue) == 1) {
+ /* Only one fragment on the socket. */
+ skb->csum_start = skb_transport_header(skb) - skb->head;
+ skb->csum_offset = offsetof(struct udphdr, check);
+ uh->check = ~csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP, 0);
+ } else {
+ /*
+ * HW-checksum won't work as there are two or more
+ * fragments on the socket so that all csums of sk_buffs
+ * should be together
+ */
+ offset = skb_transport_offset(skb);
+ skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+ skb->ip_summed = CHECKSUM_NONE;
+
+ skb_queue_walk(&sk->sk_write_queue, skb) {
+ csum = csum_add(csum, skb->csum);
+ }
+
+ uh->check = csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP,
+ csum);
+ if (uh->check == 0)
+ uh->check = CSUM_MANGLED_0;
+ }
+}
+
/*
* Sending
*/
@@ -668,7 +709,11 @@ static int udp_v6_push_pending_frames(struct sock *sk)
if (is_udplite)
csum = udplite_csum_outgoing(sk, skb);
- else
+ else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */
+ udp6_hwcsum_outgoing(sk, skb, &fl->fl6_src, &fl->fl6_dst,
+ up->len);
+ goto send;
+ } else
csum = udp_csum_outgoing(sk, skb);
/* add protocol-dependent pseudo-header */
@@ -677,13 +722,20 @@ static int udp_v6_push_pending_frames(struct sock *sk)
if (uh->check == 0)
uh->check = CSUM_MANGLED_0;
+send:
err = ip6_push_pending_frames(sk);
+ if (err) {
+ if (err == -ENOBUFS && !inet6_sk(sk)->recverr) {
+ UDP6_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_SNDBUFERRORS, is_udplite);
+ err = 0;
+ }
+ } else
+ UDP6_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_OUTDATAGRAMS, is_udplite);
out:
up->len = 0;
up->pending = 0;
- if (!err)
- UDP6_INC_STATS_USER(sock_net(sk),
- UDP_MIB_OUTDATAGRAMS, is_udplite);
return err;
}
@@ -900,11 +952,8 @@ do_udp_sendmsg:
hlimit = ip6_dst_hoplimit(dst);
}
- if (tclass < 0) {
+ if (tclass < 0)
tclass = np->tclass;
- if (tclass < 0)
- tclass = 0;
- }
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
@@ -1032,9 +1081,102 @@ int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
}
#endif
+static int udp6_ufo_send_check(struct sk_buff *skb)
+{
+ struct ipv6hdr *ipv6h;
+ struct udphdr *uh;
+
+ if (!pskb_may_pull(skb, sizeof(*uh)))
+ return -EINVAL;
+
+ ipv6h = ipv6_hdr(skb);
+ uh = udp_hdr(skb);
+
+ uh->check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, skb->len,
+ IPPROTO_UDP, 0);
+ skb->csum_start = skb_transport_header(skb) - skb->head;
+ skb->csum_offset = offsetof(struct udphdr, check);
+ skb->ip_summed = CHECKSUM_PARTIAL;
+ return 0;
+}
+
+static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, int features)
+{
+ struct sk_buff *segs = ERR_PTR(-EINVAL);
+ unsigned int mss;
+ unsigned int unfrag_ip6hlen, unfrag_len;
+ struct frag_hdr *fptr;
+ u8 *mac_start, *prevhdr;
+ u8 nexthdr;
+ u8 frag_hdr_sz = sizeof(struct frag_hdr);
+ int offset;
+ __wsum csum;
+
+ mss = skb_shinfo(skb)->gso_size;
+ if (unlikely(skb->len <= mss))
+ goto out;
+
+ if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
+ /* Packet is from an untrusted source, reset gso_segs. */
+ int type = skb_shinfo(skb)->gso_type;
+
+ if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY) ||
+ !(type & (SKB_GSO_UDP))))
+ goto out;
+
+ skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
+
+ segs = NULL;
+ goto out;
+ }
+
+ /* Do software UFO. Complete and fill in the UDP checksum as HW cannot
+ * do checksum of UDP packets sent as multiple IP fragments.
+ */
+ offset = skb->csum_start - skb_headroom(skb);
+ csum = skb_checksum(skb, offset, skb->len- offset, 0);
+ offset += skb->csum_offset;
+ *(__sum16 *)(skb->data + offset) = csum_fold(csum);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ /* Check if there is enough headroom to insert fragment header. */
+ if ((skb_headroom(skb) < frag_hdr_sz) &&
+ pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
+ goto out;
+
+ /* Find the unfragmentable header and shift it left by frag_hdr_sz
+ * bytes to insert fragment header.
+ */
+ unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);
+ nexthdr = *prevhdr;
+ *prevhdr = NEXTHDR_FRAGMENT;
+ unfrag_len = skb_network_header(skb) - skb_mac_header(skb) +
+ unfrag_ip6hlen;
+ mac_start = skb_mac_header(skb);
+ memmove(mac_start-frag_hdr_sz, mac_start, unfrag_len);
+
+ skb->mac_header -= frag_hdr_sz;
+ skb->network_header -= frag_hdr_sz;
+
+ fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen);
+ fptr->nexthdr = nexthdr;
+ fptr->reserved = 0;
+ ipv6_select_ident(fptr);
+
+ /* Fragment the skb. ipv6 header and the remaining fields of the
+ * fragment header are updated in ipv6_gso_segment()
+ */
+ segs = skb_segment(skb, features);
+
+out:
+ return segs;
+}
+
static struct inet6_protocol udpv6_protocol = {
.handler = udpv6_rcv,
.err_handler = udpv6_err,
+ .gso_send_check = udp6_ufo_send_check,
+ .gso_segment = udp6_ufo_fragment,
.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
};
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 3a3c677bc0f2..8ec3d45cd1d9 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -306,9 +306,26 @@ static void xfrm6_policy_fini(void)
xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
}
+#ifdef CONFIG_SYSCTL
+static struct ctl_table xfrm6_policy_table[] = {
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "xfrm6_gc_thresh",
+ .data = &xfrm6_dst_ops.gc_thresh,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { }
+};
+
+static struct ctl_table_header *sysctl_hdr;
+#endif
+
int __init xfrm6_init(void)
{
int ret;
+ unsigned int gc_thresh;
ret = xfrm6_policy_init();
if (ret)
@@ -317,6 +334,23 @@ int __init xfrm6_init(void)
ret = xfrm6_state_init();
if (ret)
goto out_policy;
+ /*
+ * We need a good default value for the xfrm6 gc threshold.
+ * In ipv4 we set it to the route hash table size * 8, which
+ * is half the size of the maximaum route cache for ipv4. It
+ * would be good to do the same thing for v6, except the table is
+ * constructed differently here. Here each table for a net namespace
+ * can have FIB_TABLE_HASHSZ entries, so lets go with the same
+ * computation that we used for ipv4 here. Also, lets keep the initial
+ * gc_thresh to a minimum of 1024, since, the ipv6 route cache defaults
+ * to that as a minimum as well
+ */
+ gc_thresh = FIB6_TABLE_HASHSZ * 8;
+ xfrm6_dst_ops.gc_thresh = (gc_thresh < 1024) ? 1024 : gc_thresh;
+#ifdef CONFIG_SYSCTL
+ sysctl_hdr = register_net_sysctl_table(&init_net, net_ipv6_ctl_path,
+ xfrm6_policy_table);
+#endif
out:
return ret;
out_policy:
@@ -326,6 +360,10 @@ out_policy:
void xfrm6_fini(void)
{
+#ifdef CONFIG_SYSCTL
+ if (sysctl_hdr)
+ unregister_net_sysctl_table(sysctl_hdr);
+#endif
//xfrm6_input_fini();
xfrm6_policy_fini();
xfrm6_state_fini();
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.