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authorElias Rudberg <elias.rudberg@bahnhof.net>2021-01-26 13:56:45 +0100
committerOle Tr�an <otroan@employees.org>2021-02-05 11:54:14 +0000
commite345ee5cb94cb28cac4ba62af67c2c540916a429 (patch)
treef5653c0f78888281710869907b049720853d8ede /src/plugins/nat/nat.c
parent839dcc0fb7313638d9b8f52a9db81350dddfe461 (diff)
nat: configurable handoff frame queue size
Make number of worker handoff frame queue elements configurable as a set nat frame-queue-nelts command. The default value is 64 which is the same value that was previously hard-coded. The idea is that allowing larger values can be useful in some cases, to avoid congestion drops. Also add nat_set_fq_options API support and a corresponding test case. Type: improvement Change-Id: I5c321eb2d7997f76fac2703d9c4a5b2516375db3 Signed-off-by: Elias Rudberg <elias.rudberg@bahnhof.net>
Diffstat (limited to 'src/plugins/nat/nat.c')
-rw-r--r--src/plugins/nat/nat.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c
index 57d3b2bfdd1..11664aba0b6 100644
--- a/src/plugins/nat/nat.c
+++ b/src/plugins/nat/nat.c
@@ -1839,13 +1839,15 @@ snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
}
+ ASSERT (sm->frame_queue_nelts > 0);
+
if (sm->fq_in2out_index == ~0 && sm->num_workers > 1)
- sm->fq_in2out_index =
- vlib_frame_queue_main_init (sm->in2out_node_index, NAT_FQ_NELTS);
+ sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index,
+ sm->frame_queue_nelts);
if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
- sm->fq_out2in_index =
- vlib_frame_queue_main_init (sm->out2in_node_index, NAT_FQ_NELTS);
+ sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index,
+ sm->frame_queue_nelts);
if (sm->endpoint_dependent)
update_per_vrf_sessions_vec (fib_index, is_del);
@@ -2280,6 +2282,15 @@ snat_set_workers (uword * bitmap)
return 0;
}
+int
+snat_set_frame_queue_nelts (u32 frame_queue_nelts)
+{
+ fail_if_enabled ();
+ snat_main_t *sm = &snat_main;
+ sm->frame_queue_nelts = frame_queue_nelts;
+ return 0;
+}
+
static void
snat_update_outside_fib (ip4_main_t * im, uword opaque,
u32 sw_if_index, u32 new_fib_index,
@@ -2710,6 +2721,9 @@ nat44_ed_plugin_enable (nat44_config_t c)
vlib_zero_simple_counter (&sm->total_sessions, 0);
vlib_zero_simple_counter (&sm->user_limit_reached, 0);
+ if (!sm->frame_queue_nelts)
+ sm->frame_queue_nelts = NAT_FQ_NELTS_DEFAULT;
+
sm->enabled = 1;
sm->rconfig = c;