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If ip4_neighbor_probe (or any other) is sending packet to a deleted interface,
ASSERT trips and dataplane crashes. Example:
create loopback interface instance 0
set interface ip address loop0 10.0.0.1/32
set interface state GigabitEthernet3/0/1 up
set interface state loop0 up
set interface state loop0 down
set interface ip address del loop0 10.0.0.1/32
delete loopback interface intfc loop0
set interface state GigabitEthernet3/0/1 down
set interface state GigabitEthernet3/0/1 up
comment { the following crashes VPP }
set interface state GigabitEthernet3/0/1 down
This sequence reliably crashes VPP:
(gdb)p n->name
$4 = (u8 *) 0x7fff82b47578 "interface-3-output-deleted”
If the interface doesn't exist, return ~0 and be tolerant of this in the
two call sites of counter_index()
Type: fix
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I90ec58fc0d14b20c9822703fe914f2ce89acb18d
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Type: refactor
Change-Id: Ib9e8abdbf745ad6563fc79c9ebb6b2ea65917d08
Signed-off-by: Damjan Marion <damarion@cisco.com>
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This adds a new data model for counters.
Specifying the errors severity and unit.
A later patch will update vpp_get_stats to take advantage of this.
Only the map plugin is updates as an example.
New .api language:
A new "counters" keyword to define counter sets.
counters map {
none {
severity info;
type counter64;
units "packets";
description "valid MAP packets";
};
bad_protocol {
severity error;
type counter64;
units "packets";
description "bad protocol";
};
};
Each counter has 4 keywords. severity, which is one of error, info or warn.
A type, which is one of counter64 or gauge64.
units, which is a text field using units from YANG.
paths {
"/err/ip4-map" "map";
"/err/ip6-map" "map";
"/err/ip4-t-map" "map";
"/err/ip6-t-map" "map";
};
A new paths keyword that maps the counter-set to a path in the stats segment KV store.
Updated VPP CLI to include severity so user can see error counter severity.
DBGvpp# show errors
Count Node Reason Severity
13 ethernet-input no error error
Type: feature
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: Ib2177543f49d4c3aef4d7fa72476cff2068f7771
Signed-off-by: Ole Troan <ot@cisco.com>
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Error index calculation is error_code + error_node->error_heap_index.
Type: fix
Fixes: gerrit 20802
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I66cf05a29b3cfd9ef9c5468e399290e862b784af
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Encoding the vpp node index into the vlib_error_t as a 10-bit quantity
limits us to 1K graph nodes. Unfortunately, a few nodes need 6 bit
per-node error codes. Only a very few nodes have so many counters.
It turns out that there are about 2K total error counters in the system,
which is (approximately) the maximum error heap index.
The current (index,code) encoding limits the number of interfaces to
around 250, since each interface has two associated graph nodes and we
have about 500 "normal, interior" graph node
This patch adds an error-index to node-index map, so we can store
error heap indices directly in the vlib_buffer_t.
Type: refactor
Change-Id: I28101cad3d8750819e27b8785fc0cf71ff54f79a
Signed-off-by: Dave Barach <dave@barachs.net>
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The core VLIB library now has a means to dispoe of buffers.
the vlib punt/drop node counts node errors.
the vnet punt/drop node counts interface errors.
speed up both nodes with the usual reciepe.
before:
error-drop 8.33e1
after:
drop 4.51e1
error-drop 6.81e0
Change-Id: If2e919458a3f2e9d71dbf9c6f1352dafb186a05b
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Pim van Pelt
Damjan Marion
Ole Troan
Dave Barach
Neale Ranns