diff options
| author |   Martin Gálik <magalik@cisco.com> | 2017-04-27 02:13:26 -0700 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2017-04-27 12:03:46 +0000 |
| commit | f7e655d69a3325b8050eb09bc6065fac10bcb81b (patch) | |
| tree | 26a37d5b9edc9b724988c8cad94e503f54598879 /src/plugins/snat | |
| parent | 3ef16710dc33b5b27730ced10008e2a69f81e147 (diff) | |
CGN: Send ICMP error packet if user is out of sessions available
Change-Id: I19a6015fde7342588cfa9c7a4f07016aa339cc72
Signed-off-by: Martin Gálik <magalik@cisco.com>
Diffstat (limited to 'src/plugins/snat')
| -rw-r--r-- | src/plugins/snat/in2out.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/src/plugins/snat/in2out.c b/src/plugins/snat/in2out.c index 4970fce3004..f7d29c69fe1 100644 --- a/src/plugins/snat/in2out.c +++ b/src/plugins/snat/in2out.c @@ -1635,8 +1635,13 @@ snat_det_in2out_node_fn (vlib_main_t * vm, } if (PREDICT_FALSE(!ses0)) { - next0 = SNAT_IN2OUT_NEXT_DROP; - b0->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS]; + /* too many sessions for user, send ICMP error packet */ + + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR; goto trace0; } } @@ -1780,8 +1785,13 @@ snat_det_in2out_node_fn (vlib_main_t * vm, } if (PREDICT_FALSE(!ses1)) { - next1 = SNAT_IN2OUT_NEXT_DROP; - b1->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS]; + /* too many sessions for user, send ICMP error packet */ + + vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b1, ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR; goto trace1; } } @@ -1961,8 +1971,13 @@ snat_det_in2out_node_fn (vlib_main_t * vm, } if (PREDICT_FALSE(!ses0)) { - next0 = SNAT_IN2OUT_NEXT_DROP; - b0->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS]; + /* too many sessions for user, send ICMP error packet */ + + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR; goto trace00; } } |