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A NAT sub-plugin doing statically configured match/rewrite on IP4 input or output.
It's stateless (no connection tracking).
Currently it supports rewriting of SA, DA and TCP/UDP ports.
It should be simple to add new rewrites if required.
API:
pnat_binding_add, pnat_binding_del, pnat_bindings_get, pnat_interfaces_get
CLI:
set pnat translation interface <name> match <5-tuple> rewrite <5-tuple> {in|out} [del]
show pnat translations
show pnat interfaces
Trying a new C based unit testing scheme. Where the graph node is tested
in isolation. See pnat/pnat_test.c.
Also added new cmake targets to generate coverage directly.
E.g.:
make test_pnat-ccov-report
File '/vpp/sdnat/src/plugins/nat/pnat/pnat.c':
Name Regions Miss Cover Lines Miss Cover
------------------------------------------------------------------------------------
pnat_interface_by_sw_if_index 39 8 79.49% 13 0 100.00%
pnat_instructions_from_mask 9 0 100.00% 13 0 100.00%
pnat_binding_add 64 8 87.50% 31 2 93.55%
pnat_flow_lookup 4 4 0.00% 10 10 0.00%
pnat_binding_attach 104 75 27.88% 33 6 81.82%
pnat_binding_detach 30 5 83.33% 23 2 91.30%
pnat_binding_del 97 33 65.98% 17 3 82.35%
pnat.c:pnat_calc_key_from_5tuple 9 1 88.89% 14 1 92.86%
pnat.c:pnat_interface_check_mask 10 2 80.00% 11 2 81.82%
pnat.c:pnat_enable 5 0 100.00% 11 0 100.00%
pnat.c:pnat_enable_interface 107 26 75.70% 60 15 75.00%
pnat.c:pnat_disable_interface 91 30 67.03% 32 7 78.12%
pnat.c:pnat_disable 7 2 71.43% 13 7 46.15%
------------------------------------------------------------------------------------
TOTAL 576 194 66.32% 281 55 80.43%
File '/vpp/sdnat/src/plugins/nat/pnat/pnat_node.h':
Name Regions Miss Cover Lines Miss Cover
------------------------------------------------------------------------------------
pnat_test.c:pnat_node_inline 67 11 83.58% 115 1 99.13%
pnat_test.c:pnat_calc_key 9 2 77.78% 14 2 85.71%
pnat_test.c:pnat_rewrite_ip4 55 11 80.00% 60 12 80.00%
pnat_test.c:format_pnat_trace 1 1 0.00% 12 12 0.00%
pnat_node.c:pnat_node_inline 63 63 0.00% 115 115 0.00%
pnat_node.c:pnat_calc_key 9 9 0.00% 14 14 0.00%
pnat_node.c:pnat_rewrite_ip4 55 55 0.00% 60 60 0.00%
pnat_node.c:format_pnat_trace 5 5 0.00% 12 12 0.00%
------------------------------------------------------------------------------------
TOTAL 264 157 40.53% 402 228 43.28%
Type: feature
Change-Id: I9c897f833603054a8303e7369ebff6512517c9e0
Signed-off-by: Ole Troan <ot@cisco.com>
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Ole Troan