| Message ID | 1333337106-8279-1-git-send-email-xiaosuo@gmail.com |
|---|---|
| State | Accepted |
| Headers | show |
On Mon, Apr 02, 2012 at 11:25:06AM +0800, Changli Gao wrote: > For a picked up connection, the window win is scaled twice: one is by the > initialization code, and the other is by the sender updating code. > > I use the temporary variable swin instead of modifying the variable win. > > Signed-off-by: Changli Gao <xiaosuo@gmail.com> > --- > net/netfilter/nf_conntrack_proto_tcp.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c > index 361eade..0d07a1d 100644 > --- a/net/netfilter/nf_conntrack_proto_tcp.c > +++ b/net/netfilter/nf_conntrack_proto_tcp.c > @@ -584,8 +584,8 @@ static bool tcp_in_window(const struct nf_conn *ct, > * Let's try to use the data from the packet. > */ > sender->td_end = end; > - win <<= sender->td_scale; > - sender->td_maxwin = (win == 0 ? 1 : win); > + swin = win << sender->td_scale; > + sender->td_maxwin = (swin == 0 ? 1 : swin); > sender->td_maxend = end + sender->td_maxwin; > /* > * We haven't seen traffic in the other direction yet Jozsef, do you remember if this is intentional? I'm going to test this patch in my testbed to make sure this does not break conntrackd. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, 4 Apr 2012, Pablo Neira Ayuso wrote: > On Mon, Apr 02, 2012 at 11:25:06AM +0800, Changli Gao wrote: > > For a picked up connection, the window win is scaled twice: one is by the > > initialization code, and the other is by the sender updating code. > > > > I use the temporary variable swin instead of modifying the variable win. > > > > Signed-off-by: Changli Gao <xiaosuo@gmail.com> > > --- > > net/netfilter/nf_conntrack_proto_tcp.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c > > index 361eade..0d07a1d 100644 > > --- a/net/netfilter/nf_conntrack_proto_tcp.c > > +++ b/net/netfilter/nf_conntrack_proto_tcp.c > > @@ -584,8 +584,8 @@ static bool tcp_in_window(const struct nf_conn *ct, > > * Let's try to use the data from the packet. > > */ > > sender->td_end = end; > > - win <<= sender->td_scale; > > - sender->td_maxwin = (win == 0 ? 1 : win); > > + swin = win << sender->td_scale; > > + sender->td_maxwin = (swin == 0 ? 1 : swin); > > sender->td_maxend = end + sender->td_maxwin; > > /* > > * We haven't seen traffic in the other direction yet > > Jozsef, do you remember if this is intentional? No, it's a good spotting. Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> > I'm going to test this patch in my testbed to make sure this does not > break conntrackd. A checking in a testbed doesn't hurt :-). Best regards, Jozsef - E-mail : kadlec@blackhole.kfki.hu, kadlecsik.jozsef@wigner.mta.hu PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences H-1525 Budapest 114, POB. 49, Hungary -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Apr 04, 2012 at 09:05:26PM +0200, Jozsef Kadlecsik wrote: > On Wed, 4 Apr 2012, Pablo Neira Ayuso wrote: > > > On Mon, Apr 02, 2012 at 11:25:06AM +0800, Changli Gao wrote: > > > For a picked up connection, the window win is scaled twice: one is by the > > > initialization code, and the other is by the sender updating code. > > > > > > I use the temporary variable swin instead of modifying the variable win. > > > > > > Signed-off-by: Changli Gao <xiaosuo@gmail.com> > > > --- > > > net/netfilter/nf_conntrack_proto_tcp.c | 4 ++-- > > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c > > > index 361eade..0d07a1d 100644 > > > --- a/net/netfilter/nf_conntrack_proto_tcp.c > > > +++ b/net/netfilter/nf_conntrack_proto_tcp.c > > > @@ -584,8 +584,8 @@ static bool tcp_in_window(const struct nf_conn *ct, > > > * Let's try to use the data from the packet. > > > */ > > > sender->td_end = end; > > > - win <<= sender->td_scale; > > > - sender->td_maxwin = (win == 0 ? 1 : win); > > > + swin = win << sender->td_scale; > > > + sender->td_maxwin = (swin == 0 ? 1 : swin); > > > sender->td_maxend = end + sender->td_maxwin; > > > /* > > > * We haven't seen traffic in the other direction yet > > > > Jozsef, do you remember if this is intentional? > > No, it's a good spotting. > > Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 361eade..0d07a1d 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -584,8 +584,8 @@ static bool tcp_in_window(const struct nf_conn *ct, * Let's try to use the data from the packet. */ sender->td_end = end; - win <<= sender->td_scale; - sender->td_maxwin = (win == 0 ? 1 : win); + swin = win << sender->td_scale; + sender->td_maxwin = (swin == 0 ? 1 : swin); sender->td_maxend = end + sender->td_maxwin; /* * We haven't seen traffic in the other direction yet
For a picked up connection, the window win is scaled twice: one is by the initialization code, and the other is by the sender updating code. I use the temporary variable swin instead of modifying the variable win. Signed-off-by: Changli Gao <xiaosuo@gmail.com> --- net/netfilter/nf_conntrack_proto_tcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html