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2018-02-15Optimize GRE Tunnel and add support for ERSPAN encapJohn Lo1-6/+16
Change GRE tunnel to use the interface type where the same encap node is used as output node for all GRE tunnels, instead of having dedicated output and tx node for each tunnel. This allows for more efficient tunnel creation and deletion at scale tested at 1000's of GRE tunnels. Add support for ERSPAN encap as another tunnel type, in addition to the existing L3 and TEB types. The GRE ERSPAN encap supported is type 2 thus GRE encap need to include sequence number and GRE- ERSPAN tunnel can be created with user secified ERSPAN session ID. The GRE tunnel lookup hash key is updated to inclue tunnel type and session ID, in addition to SIP/DIP and FIB index. Thus, GRE-ERSPAN tunnel can be created, with the appropriate session ID, to be used as output interface for SPAN config to send mirrored packets. Change interface naming so that all GRE tunnels, irrespective of tunnel type, uses "greN" where N is the instance number. Removed interface reuse on tunnel creation and deletion to enable unfied tunnel interface name. Add support of user specified instance on GRE tunnel creation. Thus, N in the "greN" interface name can optionally be specified by user via CLI/API. Optimize GRE tunnel encap DPO stacking to bypass load-balance DPO node since packet output on GRE tunnel always belong to the same flow after 5-tupple hash. Change-Id: Ifa83915744a1a88045c998604777cc3583f4da52 Signed-off-by: John Lo <loj@cisco.com>
2018-02-01IPv4/6 reassemblyKlement Sekera1-7/+21
Change-Id: Ic5dcadd13c88b8a5e7896dab82404509c081614a Signed-off-by: Klement Sekera <ksekera@cisco.com>
2017-12-16GRE tunnel key includes the FIB tableNeale Ranns1-2/+2
- GRE tunnels with the same src,dst addresses are not the same tunnel - Two data-plane improvements: - the cached key was never updated and so useless - no need to dereference the tunnel's HW interface to get the sw_if_index Change-Id: I2f2ea6e08c759a810b753cec22c497e921a2ca01 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-04-05GRE over IPv6Ciara Loftus1-0/+35
Refactors the GRE node to work with both IPv4 and IPv6 transports. Note that this changes the binary configuration API to support both address families; each address uses the same memory for either address type and a flag to indicate which is in use. The CLI and VAT syntax remains unchanged; the code detects whether an IPv4 or an IPv6 address was given. Configuration examples: IPv4 CLI: create gre tunnel src 192.168.1.1 dst 192.168.1.2 IPv6 CLI: create gre tunnel src 2620:124:9000::1 dst 2620:124:9000::2 IPv4 VAT: gre_add_del_tunnel src 192.168.1.1 dst 192.168.1.2 IPv6 VAT: gre_add_del_tunnel src 2620:124:9000::1 dst 2620:124:9000::2 Change-Id: Ica8ee775dc101047fb8cd41617ddc8fafc2741b0 Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
2016-11-28GRE Tests update after postinit removalNeale Ranns1-1/+3
Change-Id: I33df256ca07c99149465c896c7063a3153021a5a Signed-off-by: Neale Ranns <nranns@cisco.com>
2016-11-22GRE tests and fixesNeale Ranns1-0/+34
Change-Id: I234240e9bdd4b69ad64a17b1449ae1e81c0edaca Signed-off-by: Neale Ranns <nranns@cisco.com>