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[MLSXFRM]: Add flow labeling

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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>
This commit is contained in:
Venkat Yekkirala
2006-08-04 23:12:42 -07:00
committed by David S. Miller
parent 4e2ba18eae
commit beb8d13bed
26 changed files with 79 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
net/ipv6/af_inet6.c
View File

@@ -637,6 +637,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
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;

2
net/ipv6/datagram.c
View File

@@ -156,6 +156,8 @@ ipv4_connected:
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;

2
net/ipv6/icmp.c
View File

@@ -358,6 +358,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
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 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
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;

1
net/ipv6/inet6_connection_sock.c
View File

@@ -157,6 +157,7 @@ int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
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;

1
net/ipv6/ndisc.c
View File

@@ -419,6 +419,7 @@ static inline void ndisc_flow_init(struct flowi *fl, u8 type,
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,

1
net/ipv6/netfilter/ip6t_REJECT.c
View File

@@ -96,6 +96,7 @@ static void send_reset(struct sk_buff *oldskb)
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;

1
net/ipv6/raw.c
View File

@@ -759,6 +759,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
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)

7
net/ipv6/tcp_ipv6.c
View File

@@ -251,6 +251,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
final_p = &final;
}
security_sk_classify_flow(sk, &fl);
err = ip6_dst_lookup(sk, &dst, &fl);
if (err)
goto failure;
@@ -374,6 +376,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
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 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
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 @@ static void tcp_v6_send_reset(struct sk_buff *skb)
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 @@ static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32
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 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
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;

2
net/ipv6/udp.c
View File

@@ -782,6 +782,8 @@ do_udp_sendmsg:
connected = 0;
}
security_sk_classify_flow(sk, fl);
err = ip6_sk_dst_lookup(sk, &dst, fl);
if (err)
goto out;