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Diffstat (limited to 'net/ipv6/ip6_gre.c')
-rw-r--r--net/ipv6/ip6_gre.c52
1 files changed, 27 insertions, 25 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 515adbdba1d2..4416368dbd49 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -423,7 +423,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev)
}
-static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+static int ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
u8 type, u8 code, int offset, __be32 info)
{
struct net *net = dev_net(skb->dev);
@@ -433,13 +433,13 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (gre_parse_header(skb, &tpi, NULL, htons(ETH_P_IPV6),
offset) < 0)
- return;
+ return -EINVAL;
ipv6h = (const struct ipv6hdr *)skb->data;
t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr,
tpi.key, tpi.proto);
if (!t)
- return;
+ return -ENOENT;
switch (type) {
struct ipv6_tlv_tnl_enc_lim *tel;
@@ -449,14 +449,14 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
t->parms.name);
if (code != ICMPV6_PORT_UNREACH)
break;
- return;
+ return 0;
case ICMPV6_TIME_EXCEED:
if (code == ICMPV6_EXC_HOPLIMIT) {
net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
t->parms.name);
break;
}
- return;
+ return 0;
case ICMPV6_PARAMPROB:
teli = 0;
if (code == ICMPV6_HDR_FIELD)
@@ -472,14 +472,14 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
net_dbg_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
t->parms.name);
}
- return;
+ return 0;
case ICMPV6_PKT_TOOBIG:
ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
- return;
+ return 0;
case NDISC_REDIRECT:
ip6_redirect(skb, net, skb->dev->ifindex, 0,
sock_net_uid(net, NULL));
- return;
+ return 0;
}
if (time_before(jiffies, t->err_time + IP6TUNNEL_ERR_TIMEO))
@@ -487,6 +487,8 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
else
t->err_count = 1;
t->err_time = jiffies;
+
+ return 0;
}
static int ip6gre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
@@ -532,13 +534,9 @@ static int ip6erspan_rcv(struct sk_buff *skb, int gre_hdr_len,
struct ip6_tnl *tunnel;
u8 ver;
- if (unlikely(!pskb_may_pull(skb, sizeof(*ershdr))))
- return PACKET_REJECT;
-
ipv6h = ipv6_hdr(skb);
ershdr = (struct erspan_base_hdr *)skb->data;
ver = ershdr->ver;
- tpi->key = cpu_to_be32(get_session_id(ershdr));
tunnel = ip6gre_tunnel_lookup(skb->dev,
&ipv6h->saddr, &ipv6h->daddr, tpi->key,
@@ -879,6 +877,9 @@ static netdev_tx_t ip6gre_tunnel_xmit(struct sk_buff *skb,
struct net_device_stats *stats = &t->dev->stats;
int ret;
+ if (!pskb_inet_may_pull(skb))
+ goto tx_err;
+
if (!ip6_tnl_xmit_ctl(t, &t->parms.laddr, &t->parms.raddr))
goto tx_err;
@@ -917,10 +918,14 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
__u8 dsfield = false;
struct flowi6 fl6;
int err = -EINVAL;
+ __be16 proto;
__u32 mtu;
int nhoff;
int thoff;
+ if (!pskb_inet_may_pull(skb))
+ goto tx_err;
+
if (!ip6_tnl_xmit_ctl(t, &t->parms.laddr, &t->parms.raddr))
goto tx_err;
@@ -993,8 +998,6 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
goto tx_err;
}
} else {
- struct ipv6hdr *ipv6h = ipv6_hdr(skb);
-
switch (skb->protocol) {
case htons(ETH_P_IP):
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
@@ -1002,7 +1005,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
&dsfield, &encap_limit);
break;
case htons(ETH_P_IPV6):
- if (ipv6_addr_equal(&t->parms.raddr, &ipv6h->saddr))
+ if (ipv6_addr_equal(&t->parms.raddr, &ipv6_hdr(skb)->saddr))
goto tx_err;
if (prepare_ip6gre_xmit_ipv6(skb, dev, &fl6,
&dsfield, &encap_limit))
@@ -1029,8 +1032,9 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
}
/* Push GRE header. */
- gre_build_header(skb, 8, TUNNEL_SEQ,
- htons(ETH_P_ERSPAN), 0, htonl(t->o_seqno++));
+ proto = (t->parms.erspan_ver == 1) ? htons(ETH_P_ERSPAN)
+ : htons(ETH_P_ERSPAN2);
+ gre_build_header(skb, 8, TUNNEL_SEQ, proto, 0, htonl(t->o_seqno++));
/* TooBig packet may have updated dst->dev's mtu */
if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu)
@@ -1163,6 +1167,10 @@ static void ip6gre_tnl_copy_tnl_parm(struct ip6_tnl *t,
t->parms.i_flags = p->i_flags;
t->parms.o_flags = p->o_flags;
t->parms.fwmark = p->fwmark;
+ t->parms.erspan_ver = p->erspan_ver;
+ t->parms.index = p->index;
+ t->parms.dir = p->dir;
+ t->parms.hwid = p->hwid;
dst_cache_reset(&t->dst_cache);
}
@@ -1883,12 +1891,6 @@ static void ip6gre_tap_setup(struct net_device *dev)
netif_keep_dst(dev);
}
-bool is_ip6gretap_dev(const struct net_device *dev)
-{
- return dev->netdev_ops == &ip6gre_tap_netdev_ops;
-}
-EXPORT_SYMBOL_GPL(is_ip6gretap_dev);
-
static bool ip6gre_netlink_encap_parms(struct nlattr *data[],
struct ip_tunnel_encap *ipencap)
{
@@ -2025,9 +2027,9 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
struct nlattr *data[],
struct netlink_ext_ack *extack)
{
- struct ip6gre_net *ign = net_generic(dev_net(dev), ip6gre_net_id);
+ struct ip6_tnl *t = netdev_priv(dev);
+ struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id);
struct __ip6_tnl_parm p;
- struct ip6_tnl *t;
t = ip6gre_changelink_common(dev, tb, data, &p, extack);
if (IS_ERR(t))
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