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authorDavid Lebrun <david.lebrun@uclouvain.be>2016-11-08 14:59:20 +0100
committerDavid S. Miller <davem@davemloft.net>2016-11-09 20:40:06 -0500
commit613fa3ca9e9e6af57927dab238121010c510fe4c (patch)
tree00da3ed4b15fc85fe761341cd79e14bb3556fa57
parent9baee83406d6a4b02222f5ee21511c3f4c19e39d (diff)
downloadlinux-613fa3ca9e9e6af57927dab238121010c510fe4c.tar.bz2
ipv6: add source address argument for ipv6_push_nfrag_opts
This patch prepares for insertion of SRH through setsockopt(). The new source address argument is used when an HMAC field is present in the SRH, which must be filled. The HMAC signature process requires the source address as input text. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/ipv6.h3
-rw-r--r--net/ipv6/exthdrs.c6
-rw-r--r--net/ipv6/ip6_output.c5
-rw-r--r--net/ipv6/ip6_tunnel.c2
4 files changed, 9 insertions, 7 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 8fed1cd78658..0a3622bf086f 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -932,7 +932,8 @@ int ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
*/
void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
- u8 *proto, struct in6_addr **daddr_p);
+ u8 *proto, struct in6_addr **daddr_p,
+ struct in6_addr *saddr);
void ipv6_push_frag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
u8 *proto);
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 541cfa6345e5..72aadce18b5f 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -866,7 +866,7 @@ int ipv6_parse_hopopts(struct sk_buff *skb)
static void ipv6_push_rthdr(struct sk_buff *skb, u8 *proto,
struct ipv6_rt_hdr *opt,
- struct in6_addr **addr_p)
+ struct in6_addr **addr_p, struct in6_addr *saddr)
{
struct rt0_hdr *phdr, *ihdr;
int hops;
@@ -900,10 +900,10 @@ static void ipv6_push_exthdr(struct sk_buff *skb, u8 *proto, u8 type, struct ipv
void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
u8 *proto,
- struct in6_addr **daddr)
+ struct in6_addr **daddr, struct in6_addr *saddr)
{
if (opt->srcrt) {
- ipv6_push_rthdr(skb, proto, opt->srcrt, daddr);
+ ipv6_push_rthdr(skb, proto, opt->srcrt, daddr, saddr);
/*
* IPV6_RTHDRDSTOPTS is ignored
* unless IPV6_RTHDR is set (RFC3542).
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 6001e781164e..ddc878d2cc6d 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -203,7 +203,8 @@ int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
if (opt->opt_flen)
ipv6_push_frag_opts(skb, opt, &proto);
if (opt->opt_nflen)
- ipv6_push_nfrag_opts(skb, opt, &proto, &first_hop);
+ ipv6_push_nfrag_opts(skb, opt, &proto, &first_hop,
+ &fl6->saddr);
}
skb_push(skb, sizeof(struct ipv6hdr));
@@ -1672,7 +1673,7 @@ struct sk_buff *__ip6_make_skb(struct sock *sk,
if (opt && opt->opt_flen)
ipv6_push_frag_opts(skb, opt, &proto);
if (opt && opt->opt_nflen)
- ipv6_push_nfrag_opts(skb, opt, &proto, &final_dst);
+ ipv6_push_nfrag_opts(skb, opt, &proto, &final_dst, &fl6->saddr);
skb_push(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index bfa889c2a87b..259e8507d2cd 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1157,7 +1157,7 @@ route_lookup:
if (encap_limit >= 0) {
init_tel_txopt(&opt, encap_limit);
- ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL);
+ ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL, NULL);
}
/* Calculate max headroom for all the headers and adjust