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3 Commits

Author SHA1 Message Date
Pravin B Shelar
4221f40513 ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id. 
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 <jrajahalme@nicira.com>
CC: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2013-08-13 16:52:50 -07:00
Pravin B Shelar
3d7b46cd20 ip_tunnel: push generic protocol handling to ip_tunnel module. 
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 <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2013-06-19 18:07:41 -07:00
Pravin B Shelar
0e6fbc5b6c ip_tunnels: extend iptunnel_xmit() 
Refactor various ip tunnels xmit functions and extend iptunnel_xmit()
so that there is more code sharing.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2013-06-19 18:07:41 -07:00