diff options
| author |   Florin Coras <fcoras@cisco.com> | 2021-11-09 18:29:03 -0800 |
|---|---|---|
| committer |   Ole Tr�an <otroan@employees.org> | 2022-02-03 20:38:18 +0000 |
| commit | f840880c2fd8fbd6acfa79948224aafe6e4a62d1 (patch) | |
| tree | 6ffe2362c468c4eace54767f86889d4e70a64b6e /src/plugins/nat | |
| parent | 7285be2aabf4ba9915a23085e63efb896c5a8896 (diff) | |
ip nat: use ip rx sw_if_index in ip-local arc start
This also changes the behavior of the nat44-ei hairpinning feature.
Rather then enabling the feature on every nat interface, it is enabled
only on local0.
Type: improvement
Signed-off-by: Filip Varga <fivarga@cisco.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I4e16a83c9e328aa75fc61df508b620ef743ca775
Diffstat (limited to 'src/plugins/nat')
| -rw-r--r-- | src/plugins/nat/nat44-ei/nat44_ei.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/src/plugins/nat/nat44-ei/nat44_ei.c b/src/plugins/nat/nat44-ei/nat44_ei.c index 10b04ce6d71..7692816a2ee 100644 --- a/src/plugins/nat/nat44-ei/nat44_ei.c +++ b/src/plugins/nat/nat44-ei/nat44_ei.c @@ -576,10 +576,34 @@ nat44_ei_get_interface (nat44_ei_interface_t *interfaces, u32 sw_if_index) } static_always_inline int -nat44_ei_hairpinning_enable (u32 sw_if_index, u8 is_enable) +nat44_ei_hairpinning_enable (u8 is_enable) { - return vnet_feature_enable_disable ("ip4-local", "nat44-ei-hairpinning", - sw_if_index, is_enable, 0, 0); + nat44_ei_main_t *nm = &nat44_ei_main; + u32 sw_if_index = 0; // local0 + + if (is_enable) + { + nm->hairpin_reg += 1; + if (1 == nm->hairpin_reg) + { + return vnet_feature_enable_disable ( + "ip4-local", "nat44-ei-hairpinning", sw_if_index, is_enable, 0, 0); + } + } + else + { + if (0 == nm->hairpin_reg) + return 1; + + nm->hairpin_reg -= 1; + if (0 == nm->hairpin_reg) + { + return vnet_feature_enable_disable ( + "ip4-local", "nat44-ei-hairpinning", sw_if_index, is_enable, 0, 0); + } + } + + return 0; } int @@ -648,7 +672,7 @@ nat44_ei_add_interface (u32 sw_if_index, u8 is_inside) } if (!is_inside) { - rv = nat44_ei_hairpinning_enable (sw_if_index, 0); + rv = nat44_ei_hairpinning_enable (0); if (rv) { return rv; @@ -681,7 +705,7 @@ nat44_ei_add_interface (u32 sw_if_index, u8 is_inside) } if (is_inside && !nm->out2in_dpo) { - rv = nat44_ei_hairpinning_enable (sw_if_index, 1); + rv = nat44_ei_hairpinning_enable (1); if (rv) { return rv; @@ -786,7 +810,7 @@ nat44_ei_del_interface (u32 sw_if_index, u8 is_inside) } else { - rv = nat44_ei_hairpinning_enable (sw_if_index, 1); + rv = nat44_ei_hairpinning_enable (1); if (rv) { return rv; @@ -819,7 +843,7 @@ nat44_ei_del_interface (u32 sw_if_index, u8 is_inside) } if (is_inside) { - rv = nat44_ei_hairpinning_enable (sw_if_index, 0); + rv = nat44_ei_hairpinning_enable (0); if (rv) { return rv; |