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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-11-20 12:23:18 +0900
committerYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-11-20 12:23:18 +0900
commitdf9890c31a1a447254f39e40c3fd81ad6547945b (patch)
treebf432d75796112d86d102fe721bdce93e6ad6901 /net/ipv6
parenta305989386e402f48b216786a5c8cf440b33bdad (diff)
downloadop-kernel-dev-df9890c31a1a447254f39e40c3fd81ad6547945b.zip
op-kernel-dev-df9890c31a1a447254f39e40c3fd81ad6547945b.tar.gz
[IPV6]: Fix sending extension headers before and including routing header.
Based on suggestion from Masahide Nakamura <nakam@linux-ipv6.org>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/exthdrs.c19
-rw-r--r--net/ipv6/ip6_flowlabel.c16
-rw-r--r--net/ipv6/raw.c4
-rw-r--r--net/ipv6/udp.c4
4 files changed, 31 insertions, 12 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 748577b..be6faf3 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -673,3 +673,22 @@ out:
return ERR_PTR(err);
}
+struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+ struct ipv6_txoptions *opt)
+{
+ /*
+ * ignore the dest before srcrt unless srcrt is being included.
+ * --yoshfuji
+ */
+ if (opt && opt->dst0opt && !opt->srcrt) {
+ if (opt_space != opt) {
+ memcpy(opt_space, opt, sizeof(*opt_space));
+ opt = opt_space;
+ }
+ opt->opt_nflen -= ipv6_optlen(opt->dst0opt);
+ opt->dst0opt = NULL;
+ }
+
+ return opt;
+}
+
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index bbbe80c..1cf0276 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -225,20 +225,16 @@ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
struct ip6_flowlabel * fl,
struct ipv6_txoptions * fopt)
{
- struct ipv6_txoptions * fl_opt = fl ? fl->opt : NULL;
-
- if (fopt == NULL || fopt->opt_flen == 0) {
- if (!fl_opt || !fl_opt->dst0opt || fl_opt->srcrt)
- return fl_opt;
- }
-
+ struct ipv6_txoptions * fl_opt = fl->opt;
+
+ if (fopt == NULL || fopt->opt_flen == 0)
+ return fl_opt;
+
if (fl_opt != NULL) {
opt_space->hopopt = fl_opt->hopopt;
- opt_space->dst0opt = fl_opt->srcrt ? fl_opt->dst0opt : NULL;
+ opt_space->dst0opt = fl_opt->dst0opt;
opt_space->srcrt = fl_opt->srcrt;
opt_space->opt_nflen = fl_opt->opt_nflen;
- if (fl_opt->dst0opt && !fl_opt->srcrt)
- opt_space->opt_nflen -= ipv6_optlen(fl_opt->dst0opt);
} else {
if (fopt->opt_nflen == 0)
return fopt;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index a1265a3..d77d335 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -756,7 +756,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
}
if (opt == NULL)
opt = np->opt;
- opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ if (flowlabel)
+ opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ opt = ipv6_fixup_options(&opt_space, opt);
fl.proto = proto;
rawv6_probe_proto_opt(&fl, msg);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index bf95193..e2b87cc 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -778,7 +778,9 @@ do_udp_sendmsg:
}
if (opt == NULL)
opt = np->opt;
- opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ if (flowlabel)
+ opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ opt = ipv6_fixup_options(&opt_space, opt);
fl->proto = IPPROTO_UDP;
ipv6_addr_copy(&fl->fl6_dst, daddr);
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