[MLSXFRM]: Add flow labeling
This labels the flows that could utilize IPSec xfrms at the points the
flows are defined so that IPSec policy and SAs at the right label can
be used.
The following protos are currently not handled, but they should
continue to be able to use single-labeled IPSec like they currently
do.
ipmr
ip_gre
ipip
igmp
sit
sctp
ip6_tunnel (IPv6 over IPv6 tunnel device)
decnet
Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index ac85e9c..82a1b1a 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -637,6 +637,7 @@
fl.oif = sk->sk_bound_dev_if;
fl.fl_ip_dport = inet->dport;
fl.fl_ip_sport = inet->sport;
+ security_sk_classify_flow(sk, &fl);
if (np->opt && np->opt->srcrt) {
struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 3b55b4c..c73508e 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -156,6 +156,8 @@
if (!fl.oif && (addr_type&IPV6_ADDR_MULTICAST))
fl.oif = np->mcast_oif;
+ security_sk_classify_flow(sk, &fl);
+
if (flowlabel) {
if (flowlabel->opt && flowlabel->opt->srcrt) {
struct rt0_hdr *rt0 = (struct rt0_hdr *) flowlabel->opt->srcrt;
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 356a8a7..dbfce08 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -358,6 +358,7 @@
fl.oif = iif;
fl.fl_icmp_type = type;
fl.fl_icmp_code = code;
+ security_skb_classify_flow(skb, &fl);
if (icmpv6_xmit_lock())
return;
@@ -472,6 +473,7 @@
ipv6_addr_copy(&fl.fl6_src, saddr);
fl.oif = skb->dev->ifindex;
fl.fl_icmp_type = ICMPV6_ECHO_REPLY;
+ security_skb_classify_flow(skb, &fl);
if (icmpv6_xmit_lock())
return;
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index bf49107..7a51a25 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -157,6 +157,7 @@
fl.oif = sk->sk_bound_dev_if;
fl.fl_ip_sport = inet->sport;
fl.fl_ip_dport = inet->dport;
+ security_sk_classify_flow(sk, &fl);
if (np->opt && np->opt->srcrt) {
struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index b50055b..67cfc38 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -419,6 +419,7 @@
fl->proto = IPPROTO_ICMPV6;
fl->fl_icmp_type = type;
fl->fl_icmp_code = 0;
+ security_sk_classify_flow(ndisc_socket->sk, fl);
}
static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 8629ba1..c4eba1a 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -96,6 +96,7 @@
ipv6_addr_copy(&fl.fl6_dst, &oip6h->saddr);
fl.fl_ip_sport = otcph.dest;
fl.fl_ip_dport = otcph.source;
+ security_skb_classify_flow(oldskb, &fl);
dst = ip6_route_output(NULL, &fl);
if (dst == NULL)
return;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 15b862d..d5040e1 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -759,6 +759,7 @@
if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
fl.oif = np->mcast_oif;
+ security_sk_classify_flow(sk, &fl);
err = ip6_dst_lookup(sk, &dst, &fl);
if (err)
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 802a1a6..46922e5 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -251,6 +251,8 @@
final_p = &final;
}
+ security_sk_classify_flow(sk, &fl);
+
err = ip6_dst_lookup(sk, &dst, &fl);
if (err)
goto failure;
@@ -374,6 +376,7 @@
fl.oif = sk->sk_bound_dev_if;
fl.fl_ip_dport = inet->dport;
fl.fl_ip_sport = inet->sport;
+ security_skb_classify_flow(skb, &fl);
if ((err = ip6_dst_lookup(sk, &dst, &fl))) {
sk->sk_err_soft = -err;
@@ -467,6 +470,7 @@
fl.oif = treq->iif;
fl.fl_ip_dport = inet_rsk(req)->rmt_port;
fl.fl_ip_sport = inet_sk(sk)->sport;
+ security_sk_classify_flow(sk, &fl);
if (dst == NULL) {
opt = np->opt;
@@ -625,6 +629,7 @@
fl.oif = inet6_iif(skb);
fl.fl_ip_dport = t1->dest;
fl.fl_ip_sport = t1->source;
+ security_skb_classify_flow(skb, &fl);
/* sk = NULL, but it is safe for now. RST socket required. */
if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
@@ -691,6 +696,7 @@
fl.oif = inet6_iif(skb);
fl.fl_ip_dport = t1->dest;
fl.fl_ip_sport = t1->source;
+ security_skb_classify_flow(skb, &fl);
if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) {
@@ -923,6 +929,7 @@
fl.oif = sk->sk_bound_dev_if;
fl.fl_ip_dport = inet_rsk(req)->rmt_port;
fl.fl_ip_sport = inet_sk(sk)->sport;
+ security_sk_classify_flow(sk, &fl);
if (ip6_dst_lookup(sk, &dst, &fl))
goto out;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 3d54f24..82c7c9c 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -782,6 +782,8 @@
connected = 0;
}
+ security_sk_classify_flow(sk, fl);
+
err = ip6_sk_dst_lookup(sk, &dst, fl);
if (err)
goto out;