linux.git/include/net/l3mdev.h, branch v5.0-rc2 Linux kernel source tree l3mdev: add function to retreive upper master 2018-12-03T22:15:26+00:00 Alexis Bauvin abauvin@scaleway.com 2018-12-03T09:54:39+00:00 6a6d6681ac1add9655b7ab5dd0b46b54aeb1b44f Existing functions to retreive the l3mdev of a device did not walk the master chain to find the upper master. This patch adds a function to find the l3mdev, even indirect through e.g. a bridge: +----------+ | | | vrf-blue | | | +----+-----+ | | +----+-----+ | | | br-blue | | | +----+-----+ | | +----+-----+ | | | eth0 | | | +----------+ This will properly resolve the l3mdev of eth0 to vrf-blue. Signed-off-by: Alexis Bauvin <abauvin@scaleway.com> Reviewed-by: Amine Kherbouche <akherbouche@scaleway.com> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: Amine Kherbouche <akherbouche@scaleway.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Existing functions to retreive the l3mdev of a device did not walk the
master chain to find the upper master. This patch adds a function to
find the l3mdev, even indirect through e.g. a bridge:

+----------+
|          |
| vrf-blue |
|          |
+----+-----+
     |
     |
+----+-----+
|          |
| br-blue  |
|          |
+----+-----+
     |
     |
+----+-----+
|          |
|   eth0   |
|          |
+----------+

This will properly resolve the l3mdev of eth0 to vrf-blue.

Signed-off-by: Alexis Bauvin <abauvin@scaleway.com>
Reviewed-by: Amine Kherbouche <akherbouche@scaleway.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: Amine Kherbouche <akherbouche@scaleway.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipv4: Do not drop to make_route if oif is l3mdev 2016-10-13T16:05:26+00:00 David Ahern dsa@cumulusnetworks.com 2016-10-12T20:20:11+00:00 6104e112f4a613506ba1ea9d4b974279f888006b Commit e0d56fdd7342 was a bit aggressive removing l3mdev calls in the IPv4 stack. If the fib_lookup fails we do not want to drop to make_route if the oif is an l3mdev device. Also reverts 19664c6a0009 ("net: l3mdev: Remove netif_index_is_l3_master") which removed netif_index_is_l3_master. Fixes: e0d56fdd7342 ("net: l3mdev: remove redundant calls") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Commit e0d56fdd7342 was a bit aggressive removing l3mdev calls in
the IPv4 stack. If the fib_lookup fails we do not want to drop to
make_route if the oif is an l3mdev device.

Also reverts 19664c6a0009 ("net: l3mdev: Remove netif_index_is_l3_master")
which removed netif_index_is_l3_master.

Fixes: e0d56fdd7342 ("net: l3mdev: remove redundant calls")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: l3mdev: Remove netif_index_is_l3_master 2016-09-17T14:05:05+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-15T17:18:45+00:00 19664c6a000956290cce84c6924b13488ab794d6 No longer used after e0d56fdd73422 ("net: l3mdev: remove redundant calls") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
No longer used after e0d56fdd73422 ("net: l3mdev: remove redundant calls")

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: l3mdev: remove get_rtable method 2016-09-11T06:12:53+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:10:01+00:00 afb460fe0ef0af6d98ed51006153acb01278df2d No longer used Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
No longer used

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: l3mdev: Remove l3mdev_fib_oif 2016-09-11T06:12:53+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:10:00+00:00 ca28b8f2b8f316b9973693c72770c98da3e9500e No longer used Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
No longer used

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipv6: Remove l3mdev_get_saddr6 2016-09-11T06:12:53+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:09:59+00:00 8a966fc016b67d2a8ab4a83d22ded8cde032a0eb No longer needed Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
No longer needed

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipv4: Remove l3mdev_get_saddr 2016-09-11T06:12:53+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:09:58+00:00 d66f6c0a8f3c0bcc4ee7a9b1da4b0ebe7ee555a3 No longer needed Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
No longer needed

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: vrf: Flip IPv6 output path from FIB lookup hook to out hook 2016-09-11T06:12:52+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:09:56+00:00 4c1feac58e06270321cc500b85c2d94a11495775 Flip the IPv6 output path to use the l3mdev tx out hook. The VRF dst is not returned on the first FIB lookup. Instead, the dst on the skb is switched at the beginning of the IPv6 output processing to send the packet to the VRF driver on xmit. Link scope addresses (linklocal and multicast) need special handling: specifically the oif the flow struct can not be changed because we want the lookup tied to the enslaved interface. ie., the source address and the returned route MUST point to the interface scope passed in. Convert the existing vrf_get_rt6_dst to handle only link scope addresses. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Flip the IPv6 output path to use the l3mdev tx out hook. The VRF dst
is not returned on the first FIB lookup. Instead, the dst on the
skb is switched at the beginning of the IPv6 output processing to
send the packet to the VRF driver on xmit.

Link scope addresses (linklocal and multicast) need special handling:
specifically the oif the flow struct can not be changed because we
want the lookup tied to the enslaved interface. ie., the source address
and the returned route MUST point to the interface scope passed in.
Convert the existing vrf_get_rt6_dst to handle only link scope addresses.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: l3mdev: Allow the l3mdev to be a loopback 2016-09-11T06:12:52+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:09:54+00:00 5f02ce24c2696fec33f2a5dfcf753996f5fdd211 Allow an L3 master device to act as the loopback for that L3 domain. For IPv4 the device can also have the address 127.0.0.1. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Allow an L3 master device to act as the loopback for that L3 domain.
For IPv4 the device can also have the address 127.0.0.1.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: l3mdev: Add hook to output path 2016-09-11T06:12:52+00:00 David Ahern dsa@cumulusnetworks.com 2016-09-10T19:09:53+00:00 a8e3e1a9f02094145580ea7920c6a1d9aabd5539 This patch adds the infrastructure to the output path to pass an skb to an l3mdev device if it has a hook registered. This is the Tx parallel to l3mdev_ip{6}_rcv in the receive path and is the basis for removing the existing hook that returns the vrf dst on the fib lookup. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
This patch adds the infrastructure to the output path to pass an skb
to an l3mdev device if it has a hook registered. This is the Tx parallel
to l3mdev_ip{6}_rcv in the receive path and is the basis for removing
the existing hook that returns the vrf dst on the fib lookup.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>