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authorDave Barach <dbarach@cisco.com>2017-08-22 17:56:46 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-08-25 22:04:28 +0000
commitd84ba85c0071a28fe888c912c3dc37f471b0caeb (patch)
treef669d71373fc75ceeab0d2c225440e832aa38e10 /src/vnet/tcp
parent206b2d4342b1c1b7715c7d442f582da02e5ec9b9 (diff)
TCP horizontal scaling
- Remove frame handoff support machinery. We haven't used it in a long time. - Configuration support for the local endpoints bihash table - Drop lookup failure packets in tcp46_syn_sent Change-Id: Icd51e6785f74661c741e76fac23d21c4cc998d17 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/tcp')
-rw-r--r--src/vnet/tcp/tcp.c23
-rw-r--r--src/vnet/tcp/tcp.h4
-rw-r--r--src/vnet/tcp/tcp_input.c6
3 files changed, 30 insertions, 3 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index 197fff96..6b2b4759 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -1321,9 +1321,14 @@ tcp_main_enable (vlib_main_t * vm)
tm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
/ TCP_TSTAMP_RESOLUTION;
+ if (tm->local_endpoints_table_buckets == 0)
+ tm->local_endpoints_table_buckets = 250000;
+ if (tm->local_endpoints_table_memory == 0)
+ tm->local_endpoints_table_memory = 512 << 20;
+
clib_bihash_init_24_8 (&tm->local_endpoints_table, "local endpoint table",
- 1000000 /* $$$$ config parameter nbuckets */ ,
- (512 << 20) /*$$$ config parameter table size */ );
+ tm->local_endpoints_table_buckets,
+ tm->local_endpoints_table_memory);
/* Initialize [port-allocator] random number seed */
tm->port_allocator_seed = (u32) clib_cpu_time_now ();
@@ -1377,6 +1382,7 @@ static clib_error_t *
tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
{
tcp_main_t *tm = vnet_get_tcp_main ();
+ u64 tmp;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
@@ -1387,6 +1393,19 @@ tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
else if (unformat (input, "preallocated-half-open-connections %d",
&tm->preallocated_half_open_connections))
;
+ else if (unformat (input, "local-endpoints-table-memory %U",
+ unformat_memory_size, &tmp))
+ {
+ if (tmp >= 0x100000000)
+ return clib_error_return (0, "memory size %llx (%lld) too large",
+ tmp, tmp);
+ tm->local_endpoints_table_memory = tmp;
+ }
+ else if (unformat (input, "local-endpoints-table-buckets %d",
+ &tm->local_endpoints_table_buckets))
+ ;
+
+
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 9e4660b8..11d61f5d 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -399,6 +399,10 @@ typedef struct _tcp_main
u32 preallocated_connections;
u32 preallocated_half_open_connections;
+ /** Transport table (preallocation) size parameters */
+ u32 local_endpoints_table_memory;
+ u32 local_endpoints_table_buckets;
+
/** Vectors of src addresses. Optional unless one needs > 63K active-opens */
ip4_address_t *ip4_src_addresses;
u32 last_v4_address_rotor;
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 95f9ade1..66e2b88f 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -1882,7 +1882,11 @@ tcp46_syn_sent_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
tc0 =
tcp_half_open_connection_get (vnet_buffer (b0)->
tcp.connection_index);
- ASSERT (tc0);
+ if (PREDICT_FALSE (tc0 == 0))
+ {
+ error0 = TCP_ERROR_INVALID_CONNECTION;
+ goto drop;
+ }
ack0 = vnet_buffer (b0)->tcp.ack_number;
seq0 = vnet_buffer (b0)->tcp.seq_number;