diff options
| author | Mahesh Bandewar <maheshb@google.com> | 2016-09-16 12:59:19 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-19 01:25:22 -0400 |
| commit | 4fbae7d83c98c30efcf0a2a2ac55fbb75ef5a1a5 (patch) | |
| tree | 3ea819d38ad4fbbae8d4db166f58451c2a78ee20 /drivers/net/Kconfig | |
| parent | e8bffe0cf964f0330595bb376b74921cccdaac88 (diff) | |
| download | linux-4fbae7d83c98c30efcf0a2a2ac55fbb75ef5a1a5.tar.bz2 | |
ipvlan: Introduce l3s mode
In a typical IPvlan L3 setup where master is in default-ns and
each slave is into different (slave) ns. In this setup egress
packet processing for traffic originating from slave-ns will
hit all NF_HOOKs in slave-ns as well as default-ns. However same
is not true for ingress processing. All these NF_HOOKs are
hit only in the slave-ns skipping them in the default-ns.
IPvlan in L3 mode is restrictive and if admins want to deploy
iptables rules in default-ns, this asymmetric data path makes it
impossible to do so.
This patch makes use of the l3_rcv() (added as part of l3mdev
enhancements) to perform input route lookup on RX packets without
changing the skb->dev and then uses nf_hook at NF_INET_LOCAL_IN
to change the skb->dev just before handing over skb to L4.
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
CC: David Ahern <dsa@cumulusnetworks.com>
Reviewed-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/Kconfig')
| -rw-r--r-- | drivers/net/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 0c5415b05ea9..8768a625350d 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -149,6 +149,7 @@ config IPVLAN tristate "IP-VLAN support" depends on INET depends on IPV6 + depends on NET_L3_MASTER_DEV ---help--- This allows one to create virtual devices off of a main interface and packets will be delivered based on the dest L3 (IPv6/IPv4 addr) |