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Date: Mon, 18 Jun 2007 15:05:07 +0900 (JST)
From: YOSHIFUJI Hideaki / 吉藤英明
<yoshfuji@...ux-ipv6.org>
To: davem@...emloft.net
Cc: pekkas@...core.fi, yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org
Subject: [PATCH 2/3] [IPV6]: Do not send RH0 anymore.
Based on <draft-ietf-ipv6-deprecate-rh0-00.txt>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
---
Documentation/networking/ip-sysctl.txt | 3 +-
include/linux/ipv6.h | 4 +-
net/ipv6/datagram.c | 3 +-
net/ipv6/exthdrs.c | 57 --------------------------------
net/ipv6/ipv6_sockglue.c | 3 +-
net/ipv6/tcp_ipv6.c | 20 -----------
6 files changed, 5 insertions(+), 85 deletions(-)
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index af6a63a..09c184e 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -874,8 +874,7 @@ accept_redirects - BOOLEAN
accept_source_route - INTEGER
Accept source routing (routing extension header).
- > 0: Accept routing header.
- = 0: Accept only routing header type 2.
+ >= 0: Accept only routing header type 2.
< 0: Do not accept routing header.
Default: 0
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 648bd1f..2cfbe9a 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -27,8 +27,8 @@ struct in6_ifreq {
int ifr6_ifindex;
};
-#define IPV6_SRCRT_STRICT 0x01 /* this hop must be a neighbor */
-#define IPV6_SRCRT_TYPE_0 0 /* IPv6 type 0 Routing Header */
+#define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */
+#define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */
#define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */
/*
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index b1fe7ac..debf402 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -657,11 +657,10 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg);
switch (rthdr->type) {
- case IPV6_SRCRT_TYPE_0:
#ifdef CONFIG_IPV6_MIP6
case IPV6_SRCRT_TYPE_2:
-#endif
break;
+#endif
default:
err = -EINVAL;
goto exit_f;
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 05e9bb5..c03273c 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -426,18 +426,6 @@ looped_back:
}
switch (hdr->type) {
- case IPV6_SRCRT_TYPE_0:
- if (accept_source_route <= 0)
- goto unknown_rh;
- if (hdr->hdrlen & 0x01) {
- IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
- IPSTATS_MIB_INHDRERRORS);
- icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
- ((&hdr->hdrlen) -
- skb_network_header(skb)));
- return -1;
- }
- break;
#ifdef CONFIG_IPV6_MIP6
case IPV6_SRCRT_TYPE_2:
if (accept_source_route < 0)
@@ -596,51 +584,6 @@ void __init ipv6_rthdr_init(void)
--ANK (980729)
*/
-struct ipv6_txoptions *
-ipv6_invert_rthdr(struct sock *sk, struct ipv6_rt_hdr *hdr)
-{
- /* Received rthdr:
-
- [ H1 -> H2 -> ... H_prev ] daddr=ME
-
- Inverted result:
- [ H_prev -> ... -> H1 ] daddr =sender
-
- Note, that IP output engine will rewrite this rthdr
- by rotating it left by one addr.
- */
-
- int n, i;
- struct rt0_hdr *rthdr = (struct rt0_hdr*)hdr;
- struct rt0_hdr *irthdr;
- struct ipv6_txoptions *opt;
- int hdrlen = ipv6_optlen(hdr);
-
- if (hdr->segments_left ||
- hdr->type != IPV6_SRCRT_TYPE_0 ||
- hdr->hdrlen & 0x01)
- return NULL;
-
- n = hdr->hdrlen >> 1;
- opt = sock_kmalloc(sk, sizeof(*opt) + hdrlen, GFP_ATOMIC);
- if (opt == NULL)
- return NULL;
- memset(opt, 0, sizeof(*opt));
- opt->tot_len = sizeof(*opt) + hdrlen;
- opt->srcrt = (void*)(opt+1);
- opt->opt_nflen = hdrlen;
-
- memcpy(opt->srcrt, hdr, sizeof(*hdr));
- irthdr = (struct rt0_hdr*)opt->srcrt;
- irthdr->reserved = 0;
- opt->srcrt->segments_left = n;
- for (i=0; i<n; i++)
- memcpy(irthdr->addr+i, rthdr->addr+(n-1-i), 16);
- return opt;
-}
-
-EXPORT_SYMBOL_GPL(ipv6_invert_rthdr);
-
/**********************************
Hop-by-hop options.
**********************************/
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index aa3d07c..f66ce0c 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -416,11 +416,10 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
if (optname == IPV6_RTHDR && opt && opt->srcrt) {
struct ipv6_rt_hdr *rthdr = opt->srcrt;
switch (rthdr->type) {
- case IPV6_SRCRT_TYPE_0:
#ifdef CONFIG_IPV6_MIP6
case IPV6_SRCRT_TYPE_2:
-#endif
break;
+#endif
default:
goto sticky_done;
}
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 193d9d6..d67fb1e 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -484,17 +484,6 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
if (dst == NULL) {
opt = np->opt;
- if (opt == NULL &&
- np->rxopt.bits.osrcrt == 2 &&
- treq->pktopts) {
- struct sk_buff *pktopts = treq->pktopts;
- struct inet6_skb_parm *rxopt = IP6CB(pktopts);
- if (rxopt->srcrt)
- opt = ipv6_invert_rthdr(sk,
- (struct ipv6_rt_hdr *)(skb_network_header(pktopts) +
- rxopt->srcrt));
- }
-
if (opt && opt->srcrt) {
struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
ipv6_addr_copy(&final, &fl.fl6_dst);
@@ -1391,15 +1380,6 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
if (sk_acceptq_is_full(sk))
goto out_overflow;
- if (np->rxopt.bits.osrcrt == 2 &&
- opt == NULL && treq->pktopts) {
- struct inet6_skb_parm *rxopt = IP6CB(treq->pktopts);
- if (rxopt->srcrt)
- opt = ipv6_invert_rthdr(sk,
- (struct ipv6_rt_hdr *)(skb_network_header(treq->pktopts) +
- rxopt->srcrt));
- }
-
if (dst == NULL) {
struct in6_addr *final_p = NULL, final;
struct flowi fl;
--
1.5.1
--
YOSHIFUJI Hideaki @ USAGI Project <yoshfuji@...ux-ipv6.org>
GPG-FP : 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
-
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