From: "Maciej Żenczykowski" <zenczykowski@gmail.com>
To: "Maciej Żenczykowski" <maze@google.com>,
"David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org,
"Hideaki YOSHIFUJI" <yoshfuji@linux-ipv6.org>,
"Maciej Żenczykowski" <maze@google.com>,
"Erik Kline" <ek@google.com>,
"Lorenzo Colitti" <lorenzo@google.com>
Subject: [PATCH] net: relax PKTINFO non local ipv6 udp xmit check
Date: Fri, 26 Aug 2011 14:56:28 -0700 [thread overview]
Message-ID: <1314395788-20179-1-git-send-email-zenczykowski@gmail.com> (raw)
From: Maciej Żenczykowski <maze@google.com>
Allow transparent sockets to be less restrictive about
the source ip of ipv6 udp packets being sent.
Google-Bug-Id: 5018138
Signed-off-by: Maciej Żenczykowski <maze@google.com>
CC: "Erik Kline" <ek@google.com>
CC: "Lorenzo Colitti" <lorenzo@google.com>
---
include/net/transp_v6.h | 1 +
net/ipv6/datagram.c | 5 +++--
net/ipv6/ip6_flowlabel.c | 2 +-
net/ipv6/ipv6_sockglue.c | 2 +-
net/ipv6/raw.c | 2 +-
net/ipv6/udp.c | 2 +-
6 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index 5271a74..498433d 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -39,6 +39,7 @@ extern int datagram_recv_ctl(struct sock *sk,
struct sk_buff *skb);
extern int datagram_send_ctl(struct net *net,
+ struct sock *sk,
struct msghdr *msg,
struct flowi6 *fl6,
struct ipv6_txoptions *opt,
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 9ef1831..03e20fa 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -599,7 +599,7 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
return 0;
}
-int datagram_send_ctl(struct net *net,
+int datagram_send_ctl(struct net *net, struct sock *sk,
struct msghdr *msg, struct flowi6 *fl6,
struct ipv6_txoptions *opt,
int *hlimit, int *tclass, int *dontfrag)
@@ -658,7 +658,8 @@ int datagram_send_ctl(struct net *net,
if (addr_type != IPV6_ADDR_ANY) {
int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL;
- if (!ipv6_chk_addr(net, &src_info->ipi6_addr,
+ if (!(sk && inet_sk(sk)->transparent) &&
+ !ipv6_chk_addr(net, &src_info->ipi6_addr,
strict ? dev : NULL, 0))
err = -EINVAL;
else
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index f3caf1b..a896987 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -360,7 +360,7 @@ fl_create(struct net *net, struct in6_flowlabel_req *freq, char __user *optval,
msg.msg_control = (void*)(fl->opt+1);
memset(&flowi6, 0, sizeof(flowi6));
- err = datagram_send_ctl(net, &msg, &flowi6, fl->opt, &junk,
+ err = datagram_send_ctl(net, NULL, &msg, &flowi6, fl->opt, &junk,
&junk, &junk);
if (err)
goto done;
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 147ede38..2fbda5f 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -475,7 +475,7 @@ sticky_done:
msg.msg_controllen = optlen;
msg.msg_control = (void*)(opt+1);
- retv = datagram_send_ctl(net, &msg, &fl6, opt, &junk, &junk,
+ retv = datagram_send_ctl(net, sk, &msg, &fl6, opt, &junk, &junk,
&junk);
if (retv)
goto done;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index f34902f..131be5e 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -817,7 +817,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
- err = datagram_send_ctl(sock_net(sk), msg, &fl6, opt, &hlimit,
+ err = datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt, &hlimit,
&tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 35bbdc4..b0fb25c 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1090,7 +1090,7 @@ do_udp_sendmsg:
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
- err = datagram_send_ctl(sock_net(sk), msg, &fl6, opt, &hlimit,
+ err = datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt, &hlimit,
&tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
--
1.7.3.1
next reply other threads:[~2011-08-26 21:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-26 21:56 Maciej Żenczykowski [this message]
2011-08-28 21:11 ` [PATCH] net: relax PKTINFO non local ipv6 udp xmit check David Miller
2011-08-28 22:35 ` Maciej Żenczykowski
2011-08-29 1:06 ` David Miller
2011-08-30 18:51 ` Maciej Żenczykowski
[not found] ` <CANP3RGdLbc7bM_YUU2MTGkMN0cFSx-xt0xrY1SDN_Ep4Fci-AQ@mail.gmail.com>
2011-08-30 19:18 ` David Miller
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