linux-stable.git/net/ipv4/ip_tunnel_core.c, branch linux-3.13.y

ip_tunnel: Fix dst ref-count.

2014-04-14T13:47:21+00:00

[ Upstream commit fbd02dd405d0724a0f25897ed4a6813297c9b96f ]

Commit 10ddceb22ba (ip_tunnel:multicast process cause panic due
to skb->_skb_refdst NULL pointer) removed dst-drop call from
ip-tunnel-recv.

Following commit reintroduce dst-drop and fix the original bug by
checking loopback packet before releasing dst.
Original bug: https://bugzilla.kernel.org/show_bug.cgi?id=70681

CC: Xin Long 
Signed-off-by: Pravin B Shelar 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

ip_tunnel:multicast process cause panic due to skb->_skb_refdst NULL pointer

2014-03-24T04:44:01+00:00

[ Upstream commit 10ddceb22bab11dab10ba645c7df2e4a8e7a5db5 ]

when ip_tunnel process multicast packets, it may check if the packet is looped
back packet though 'rt_is_output_route(skb_rtable(skb))' in ip_tunnel_rcv(),
but before that , skb->_skb_refdst has been dropped in iptunnel_pull_header(),
so which leads to a panic.

fix the bug: https://bugzilla.kernel.org/show_bug.cgi?id=70681

Signed-off-by: Xin Long 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

ipv4: generalize gre_handle_offloads

2013-10-19T23:36:18+00:00

This patch makes gre_handle_offloads() more generic
and rename it to iptunnel_handle_offloads()

This will be used to add GSO/TSO support to IPIP tunnels.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ip_tunnel_core: Change __skb_push back to skb_push

2013-10-01T16:42:16+00:00

Git commit 0e6fbc5b ("ip_tunnels: extend iptunnel_xmit()")
moved the IP header installation to iptunnel_xmit() and
changed skb_push() to __skb_push(). This makes possible
bugs hard to track down, so change it back to skb_push().

Cc: Pravin Shelar 
Signed-off-by: Steffen Klassert 
Signed-off-by: David S. Miller

tunnels: harmonize cleanup done on skb on xmit path

2013-09-04T04:27:25+00:00

The goal of this patch is to harmonize cleanup done on a skbuff on xmit path.
Before this patch, behaviors were different depending of the tunnel type.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

iptunnels: remove net arg from iptunnel_xmit()

2013-09-04T04:27:25+00:00

This argument is not used, let's remove it.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id.

2013-08-13T23:52:50+00:00

Using inner-id for tunnel id is not safe in some rare cases.
E.g. packets coming from multiple sources entering same tunnel
can have same id. Therefore on tunnel packet receive we
could have packets from two different stream but with same
source and dst IP with same ip-id which could confuse ip packet
reassembly.

Following patch reverts optimization from commit
490ab08127 (IP_GRE: Fix IP-Identification.)

CC: Jarno Rajahalme 
CC: Ansis Atteka 
Signed-off-by: Pravin B Shelar 
Signed-off-by: David S. Miller

ip_tunnel: push generic protocol handling to ip_tunnel module.

2013-06-20T01:07:41+00:00

Process skb tunnel header before sending packet to protocol handler.
this allows code sharing between gre and ovs gre modules.

Signed-off-by: Pravin B Shelar 
Signed-off-by: David S. Miller

ip_tunnels: extend iptunnel_xmit()

2013-06-20T01:07:41+00:00

Refactor various ip tunnels xmit functions and extend iptunnel_xmit()
so that there is more code sharing.

Signed-off-by: Pravin B Shelar 
Signed-off-by: David S. Miller