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Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Main Enhancements:
- Protocol Independent FIB API
- Hierarchical FIB entries. Dynamic recursive route resolution.
- Extranet Support.
- Integration of IP and MPLS forwarding.
- Separation of FIB and Adjacency databases.
- Data-Plane Object forwarding model.
Change-Id: I52dc815c0d0aa8b493e3cf6b978568f3cc82296c
Signed-off-by: Neale Ranns <nranns@cisco.com>
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IP4 and IP6 nodes currently shares the adj->lookup_next_index. That
has some issues, e.g. that one has to add non-functional nodes like
ip4-hop-by-hop and that anyone dynamically adding nodes to any of the
IP4/IP6 lookup nodes must ensure they add themselves to all relevant
nodes to ensure next index consistency.
This patch splits the IP_LOOKUP_NEXT into separate enums for IP4 and
IP6 with a common part for next-nodes used by both. It sets up other
IP nodes as siblings to avoid inconsistencies. This allows IP4 and IP6
lookup next nodes to evolve independently. The adj->lookup_next_index is
still shared, assuming that an IP4 adjacency isn't used by an
IP6 graph node.
Change-Id: I589b8364fe54e7a10c059b7ef9d6707eb0a345cc
Signed-off-by: Ole Troan <ot@cisco.com>
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* compiler -march= parameter is changed from native to corei7
so code is always genereted with instructions which are available
on the Nehalem microarchitecture (up to SSE4.2)
* compiler -mtune= parameter is added so code is optimized for
corei7-avx which equals to Sandy Bridge microarchitecture
* set of macros is added which allows run-time detection of available
cpu instructions (e.g. clib_cpu_supports_avx())
* set of macros is added which allows us to clone graph node funcitons
where cloned function is optmized for different microarchitecture
Those macros are using following attributes:
__attribute__((flatten))
__attribute__((target("arch=core-avx2)))
I.e. If applied to foo_node_fn() macro will generate cloned
functions foo_node_fn_avx2() and foo_node_fn_avx512() (future)
It will also generate function void * foo_node_fn_multiarch_select()
which detects available instruction set and returns pointer to the
best matching function clone.
Change-Id: I2dce0ac92a5ede95fcb56f47f3d1f3c4c040bac0
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Adds flags to the packet buffer to track the number of VLANs in
the current Ethernet frame. We use two bits to signify 0, 1 or
2 VLANs. The value 3 signififies an unknown quantity of VLANs,
which includes "three or more" which is not widely supported.
We place the bits in the vlib_buffer section; that is not the
opaque section, so that all subordinate nodes can use it.
For background, see the discussion thread at
https://lists.fd.io/pipermail/vpp-dev/2016-March/000354.html
The helper macro ethernet_buffer_header_size(buffer) uses
these bits stored in "buffer" to calculate the Ethernet header
size.
The macro ethernet_buffer_set_vlan_count(buffer, count) sets the
appropriate bit values based on the number in "count".
By current frame we are referring to the case where a packet
that arrives from the wire is carrying an encapsulated Ethernet
packet. Once decapsulated that inner packet becomes the current
frame.
There are two places where this value is set; For most Ethernet
frames this will be in the "ethernet-input" node when that node
parses the Ethernet header. The second place is whenever
vnet_update_l2_len() is used to update the layer 2 opaque data.
Typically this function is used by nodes just before they send
a packet into l2-input.
These bits are zeroed in vlib_buffer_init_for_free_list()
meaning that wherever the buffer comes from they have a reasonable
value (eg, if ip4/ip6 generates the packet.)
Primarily this VLAN counter is used by nodes below "ethernet-
input" and "l2-input" to determine where the start of the
current Ethernet header is. There is opaque data set by
"ethernet-input" storing the offset of the current Ethernet
header but, since this is opaque, it's not usable by downstream
nodes. Previously several nodes have made assumptions regarding
the location of the Ethernet header, including that it is always
at the start of the packet buffer (incorrect when we have
encapsulated packets) or that it is exactly
sizeof(ethernet_header_t) away (incorrect when we have VLAN tags.)
One notable case where this functionality is required is in
ip6_neighbor when it generates a response to a received neighbor
soliciation request; it reuses the incoming Ethernet header
in-situ and thus needs to reliably know where that header begins.
Also, at the suggestion of Dave Barach, this patch removes
definition of HGSHM bits in the buffer flags since they are
unused and unlikely to ever be.
Change-Id: I00e4b9ced5ef814a776020c395d1774aba6185b3
Signed-off-by: Chris Luke <chrisy@flirble.org>
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This should help when adding new adjacency types
Change-Id: I1832c6b7a80b6bc69ed83423a60511b7932f336f
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Change-Id: I65bc03dbb5fedfc75f4ce7153eae116fe599730c
Signed-off-by: Dave Barach <dbarach@cisco.com>
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Fields needed only by specific adj type should
be shared.
Change-Id: I59ee15a29d2f5f527f46910a1a63866b291734c7
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Change-Id: Ib246f1fbfce93274020ee93ce461e3d8bd8b9f17
Signed-off-by: Ed Warnicke <eaw@cisco.com>
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