linux.git/net/ipv4/ip_gre.c, branch v2.6.25

[INET]: Don't create tunnels with '%' in name.

2008-02-27T07:51:04+00:00

Four tunnel drivers (ip_gre, ipip, ip6_tunnel and sit) can receive a
pre-defined name for a device from the userspace.  Since these drivers
call the register_netdevice() (rtnl_lock, is held), which does _not_
generate the device's name, this name may contain a '%' character.

Not sure how bad is this to have a device with a '%' in its name, but
all the other places either use the register_netdev(), which call the
dev_alloc_name(), or explicitly call the dev_alloc_name() before
registering, i.e. do not allow for such names.

This had to be prior to the commit 34cc7b, but I forgot to number the
patches and this one got lost, sorry.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

[IP_TUNNEL]: Don't limit the number of tunnels with generic name explicitly.

2008-02-24T04:19:20+00:00

Use the added dev_alloc_name() call to create tunnel device name,
rather than iterate in a hand-made loop with an artificial limit.

Thanks Patrick for noticing this.

[ The way this works is, when the device is actually registered,
  the generic code noticed the '%' in the name and invokes
  dev_alloc_name() to fully resolve the name.  -DaveM ]

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

[NETNS]: Add namespace parameter to ip_route_output_key.

2008-01-28T23:11:07+00:00

Needed to propagate it down to the ip_route_output_flow.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[NETNS]: Add netns parameter to inetdev_by_index.

2008-01-28T23:10:20+00:00

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[IPV4] net/ipv4: Use ipv4_is_

2008-01-28T22:58:15+00:00

Signed-off-by: Joe Perches 
Signed-off-by: David S. Miller

[IP_GRE]: Rebinding of GRE tunnels to other interfaces

2008-01-28T22:57:56+00:00

This is similar to the change already done for IPIP tunnels.

Once created, a GRE tunnel can't be bound to another device.
To reproduce:

# create a tunnel:
ip tunnel add tunneltest0 mode gre remote 10.0.0.1 dev eth0
# try to change the bounding device from eth0 to eth1:
ip tunnel change tunneltest0 dev eth1
# show the result:
ip tunnel show tunneltest0

tunneltest0: gre/ip  remote 10.0.0.1  local any  dev eth0  ttl inherit

Notice the bound device has not changed from eth0 to eth1.

This patch fixes it. When changing the binding, it also recalculates the
MTU according to the new bound device's MTU.

Signed-off-by: Michal Schmidt 
Signed-off-by: David S. Miller

[IPV4] ip_gre: set mac_header correctly in receive path

2007-12-20T08:10:33+00:00

mac_header update in ipgre_recv() was incorrectly changed to
skb_reset_mac_header() when it was introduced.

Signed-off-by: Timo Teras 
Signed-off-by: David S. Miller

[NET]: Treat the sign of the result of skb_headroom() consistently

2007-10-24T04:27:55+00:00

In some places, the result of skb_headroom() is compared to an unsigned
integer, and in others, the result is compared to a signed integer.  Make
the comparisons consistent and correct.

Signed-off-by: Chuck Lever 
Signed-off-by: David S. Miller

[IPV4] ip_gre: sendto/recvfrom NBMA address

2007-10-24T04:27:53+00:00

When GRE tunnel is in NBMA mode, this patch allows an application to use
a PF_PACKET socket to:
- send a packet to specific NBMA address with sendto()
- use recvfrom() to receive packet and check which NBMA address it came from

This is required to implement properly NHRP over GRE tunnel.

Signed-off-by: Timo Teras 
Acked-by: Alexey Kuznetsov 
Signed-off-by: David S. Miller

[NET]: Move hardware header operations out of netdevice.

2007-10-10T23:52:52+00:00

Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller