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authorJĂșlius Milan <julius.milan@pantheon.tech>2021-09-10 09:43:31 +0200
committerAndrew Yourtchenko <ayourtch@gmail.com>2021-09-28 13:38:36 +0000
commit11c7cdd590a06a9681c43bde53055183c9d0058b (patch)
treeed41596f529ed55c30d72e654c721b1bf651cc3b /src/plugins/nat/nat44-ed
parent2430bad8951a321e0fcb50eafb562ecbdbecbb5b (diff)
nat: NAT44 ED & EI session filtering CLI
Improving session filtering capabilities of show nat44 sessions CLI command for EI and ED NAT plugins. Adding filtering options: saddr, sport, daddr, dport, proto for both i2o and o2i flows. Type: improvement Change-Id: I70bc94a2e922cddf9451eb7dcbf4a7be21ebf0df Signed-off-by: Filip Varga <fivarga@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat44-ed')
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_cli.c109
1 files changed, 95 insertions, 14 deletions
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_cli.c b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
index e9be7eb051f..1eedb27dc46 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_cli.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
@@ -1386,22 +1386,61 @@ nat44_show_sessions_command_fn (vlib_main_t * vm, unformat_input_t * input,
clib_error_t *error = 0;
snat_main_per_thread_data_t *tsm;
snat_main_t *sm = &snat_main;
-
- int i = 0;
+ ip4_address_t i2o_sa, i2o_da, o2i_sa, o2i_da;
+ u8 filter_i2o_sa = 0, filter_i2o_da = 0;
+ u8 filter_o2i_sa = 0, filter_o2i_da = 0;
+ u16 i2o_sp, i2o_dp, o2i_sp, o2i_dp;
+ u8 filter_i2o_sp = 0, filter_i2o_dp = 0;
+ u8 filter_o2i_sp = 0, filter_o2i_dp = 0;
+ nat_protocol_t proto;
+ u8 filter_proto = 0;
+ u8 had_input = 1, filtering = 0;
+ int i = 0, showed_sessions;
if (!unformat_user (input, unformat_line_input, line_input))
- goto print;
+ {
+ had_input = 0;
+ goto print;
+ }
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- break;
+ if (unformat (line_input, "filter i2o saddr %U", unformat_ip4_address,
+ &i2o_sa))
+ filter_i2o_sa = filtering = 1;
+ else if (unformat (line_input, "filter i2o daddr %U",
+ unformat_ip4_address, &i2o_da))
+ filter_i2o_da = filtering = 1;
+ else if (unformat (line_input, "filter o2i saddr %U",
+ unformat_ip4_address, &o2i_sa))
+ filter_o2i_sa = filtering = 1;
+ else if (unformat (line_input, "filter o2i daddr %U",
+ unformat_ip4_address, &o2i_da))
+ filter_o2i_da = filtering = 1;
+ else if (unformat (line_input, "filter i2o sport %u", &i2o_sp))
+ filter_i2o_sp = filtering = 1;
+ else if (unformat (line_input, "filter i2o dport %u", &i2o_dp))
+ filter_i2o_dp = filtering = 1;
+ else if (unformat (line_input, "filter o2i sport %u", &o2i_sp))
+ filter_o2i_sp = filtering = 1;
+ else if (unformat (line_input, "filter o2i dport %u", &o2i_dp))
+ filter_o2i_dp = filtering = 1;
+ else if (unformat (line_input, "filter i2o proto %U",
+ unformat_nat_protocol, &proto))
+ filter_proto = filtering = 1;
+ else if (unformat (line_input, "filter o2i proto %U",
+ unformat_nat_protocol, &proto))
+ filter_proto = filtering = 1;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
- unformat_free (line_input);
print:
- vlib_cli_output (vm, "NAT44 ED sessions:");
+ vlib_cli_output (vm, "NAT44 ED sessions:");
vec_foreach_index (i, sm->per_thread_data)
{
@@ -1411,12 +1450,52 @@ print:
i, vlib_worker_threads[i].name,
pool_elts (tsm->sessions));
- snat_session_t *s;
- pool_foreach (s, tsm->sessions)
- {
- vlib_cli_output (vm, " %U\n", format_snat_session, tsm, s);
- }
+ showed_sessions = 0;
+ snat_session_t *s;
+ pool_foreach (s, tsm->sessions)
+ {
+ if (filtering)
+ {
+ if (filter_i2o_sa && i2o_sa.as_u32 != s->i2o.match.saddr.as_u32)
+ continue;
+ if (filter_i2o_da && i2o_da.as_u32 != s->i2o.match.daddr.as_u32)
+ continue;
+ if (filter_o2i_sa && o2i_sa.as_u32 != s->o2i.match.saddr.as_u32)
+ continue;
+ if (filter_o2i_da && o2i_da.as_u32 != s->o2i.match.daddr.as_u32)
+ continue;
+ if (filter_i2o_sp &&
+ i2o_sp != clib_net_to_host_u16 (s->i2o.match.sport))
+ continue;
+ if (filter_i2o_dp &&
+ i2o_dp != clib_net_to_host_u16 (s->i2o.match.dport))
+ continue;
+ if (filter_o2i_sp &&
+ o2i_sp != clib_net_to_host_u16 (s->o2i.match.sport))
+ continue;
+ if (filter_o2i_dp &&
+ o2i_dp != clib_net_to_host_u16 (s->o2i.match.dport))
+ continue;
+ if (filter_proto && proto != s->nat_proto)
+ continue;
+ showed_sessions++;
+ }
+ vlib_cli_output (vm, " %U\n", format_snat_session, tsm, s);
+ }
+ if (filtering)
+ {
+ vlib_cli_output (vm,
+ "Showed: %d, Filtered: %d of total %d "
+ "sessions of thread %d\n\n",
+ showed_sessions,
+ pool_elts (tsm->sessions) - showed_sessions,
+ pool_elts (tsm->sessions), i);
+ }
}
+
+done:
+ if (had_input)
+ unformat_free (line_input);
return error;
}
@@ -2059,7 +2138,9 @@ VLIB_CLI_COMMAND (nat44_show_interface_address_command, static) = {
?*/
VLIB_CLI_COMMAND (nat44_show_sessions_command, static) = {
.path = "show nat44 sessions",
- .short_help = "show nat44 sessions",
+ .short_help = "show nat44 sessions [filter {i2o | o2i} {saddr <ip4-addr> "
+ "| sport <n> | daddr <ip4-addr> | dport <n> | proto <proto>} "
+ "[filter .. [..]]]",
.function = nat44_show_sessions_command_fn,
};