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authorKlement Sekera <ksekera@cisco.com>2018-06-28 11:16:15 +0200
committerDamjan Marion <dmarion@me.com>2018-06-28 13:50:13 +0000
commit8dcfed5da8c36852fdc3077ed96ef9c7b3574b77 (patch)
tree690578fb8be2bccfb9a32b35119f536daefe8baf /src/vnet
parent08bca80c998bdae87060306350124714606a1604 (diff)
reassembly: optimize bihash usage
Change-Id: I19690db9996ecb8c5e86415d2fd3c7133ce698f8 Signed-off-by: Klement Sekera <ksekera@cisco.com>
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/ip/ip4_reassembly.c60
-rw-r--r--src/vnet/ip/ip6_reassembly.c23
2 files changed, 38 insertions, 45 deletions
diff --git a/src/vnet/ip/ip4_reassembly.c b/src/vnet/ip/ip4_reassembly.c
index 2f4318fe5ed..e907d84f461 100644
--- a/src/vnet/ip/ip4_reassembly.c
+++ b/src/vnet/ip/ip4_reassembly.c
@@ -23,7 +23,7 @@
#include <vppinfra/vec.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
-#include <vppinfra/bihash_24_8.h>
+#include <vppinfra/bihash_16_8.h>
#include <vnet/ip/ip4_reassembly.h>
#define MSEC_PER_SEC 1000
@@ -62,17 +62,14 @@ typedef struct
{
struct
{
- // align by making this 4 octets even though its a 2 octets field
u32 xx_id;
ip4_address_t src;
ip4_address_t dst;
- // align by making this 4 octets even though its a 2 octets field
- u32 frag_id;
- // align by making this 4 octets even though its a 1 octet field
- u32 proto;
- u32 unused;
+ u16 frag_id;
+ u8 proto;
+ u8 unused;
};
- u64 as_u64[3];
+ u64 as_u64[2];
};
} ip4_reass_key_t;
@@ -147,7 +144,7 @@ typedef struct
u32 max_reass_n;
// IPv4 runtime
- clib_bihash_24_8_t hash;
+ clib_bihash_16_8_t hash;
// per-thread data
ip4_reass_per_thread_t *per_thread_data;
@@ -297,11 +294,10 @@ always_inline void
ip4_reass_free (ip4_reass_main_t * rm, ip4_reass_per_thread_t * rt,
ip4_reass_t * reass)
{
- clib_bihash_kv_24_8_t kv;
+ clib_bihash_kv_16_8_t kv;
kv.key[0] = reass->key.as_u64[0];
kv.key[1] = reass->key.as_u64[1];
- kv.key[2] = reass->key.as_u64[2];
- clib_bihash_add_del_24_8 (&rm->hash, &kv, 0);
+ clib_bihash_add_del_16_8 (&rm->hash, &kv, 0);
pool_put (rt->pool, reass);
--rt->reass_n;
}
@@ -343,12 +339,11 @@ ip4_reass_find_or_create (vlib_main_t * vm, ip4_reass_main_t * rm,
{
ip4_reass_t *reass = NULL;
f64 now = vlib_time_now (rm->vlib_main);
- clib_bihash_kv_24_8_t kv, value;
+ clib_bihash_kv_16_8_t kv, value;
kv.key[0] = k->as_u64[0];
kv.key[1] = k->as_u64[1];
- kv.key[2] = k->as_u64[2];
- if (!clib_bihash_search_24_8 (&rm->hash, &kv, &value))
+ if (!clib_bihash_search_16_8 (&rm->hash, &kv, &value))
{
reass = pool_elt_at_index (rt->pool, value.value);
if (now > reass->last_heard + rm->timeout)
@@ -385,11 +380,10 @@ ip4_reass_find_or_create (vlib_main_t * vm, ip4_reass_main_t * rm,
reass->key.as_u64[0] = kv.key[0] = k->as_u64[0];
reass->key.as_u64[1] = kv.key[1] = k->as_u64[1];
- reass->key.as_u64[2] = kv.key[2] = k->as_u64[2];
kv.value = reass - rt->pool;
reass->last_heard = now;
- if (clib_bihash_add_del_24_8 (&rm->hash, &kv, 1))
+ if (clib_bihash_add_del_16_8 (&rm->hash, &kv, 1))
{
ip4_reass_free (rm, rt, reass);
reass = NULL;
@@ -934,12 +928,14 @@ ip4_reassembly_inline (vlib_main_t * vm,
else
{
ip4_reass_key_t k;
- k.src.as_u32 = ip0->src_address.as_u32;
- k.dst.as_u32 = ip0->dst_address.as_u32;
- k.xx_id = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- k.frag_id = ip0->fragment_id;
- k.proto = ip0->protocol;
- k.unused = 0;
+ k.as_u64[0] =
+ (u64) vnet_buffer (b0)->sw_if_index[VLIB_RX] << 32 | (u64)
+ ip0->src_address.as_u32;
+ k.as_u64[1] =
+ (u64) ip0->dst_address.
+ as_u32 << 32 | (u64) ip0->fragment_id << 16 | (u64) ip0->
+ protocol << 8;
+
ip4_reass_t *reass =
ip4_reass_find_or_create (vm, rm, rt, &k, &vec_drop_timeout);
@@ -1076,14 +1072,14 @@ typedef enum
typedef struct
{
int failure;
- clib_bihash_24_8_t *new_hash;
+ clib_bihash_16_8_t *new_hash;
} ip4_rehash_cb_ctx;
static void
-ip4_rehash_cb (clib_bihash_kv_24_8_t * kv, void *_ctx)
+ip4_rehash_cb (clib_bihash_kv_16_8_t * kv, void *_ctx)
{
ip4_rehash_cb_ctx *ctx = _ctx;
- if (clib_bihash_add_del_24_8 (ctx->new_hash, kv, 1))
+ if (clib_bihash_add_del_16_8 (ctx->new_hash, kv, 1))
{
ctx->failure = 1;
}
@@ -1112,23 +1108,23 @@ ip4_reass_set (u32 timeout_ms, u32 max_reassemblies,
u32 new_nbuckets = ip4_reass_get_nbuckets ();
if (ip4_reass_main.max_reass_n > 0 && new_nbuckets > old_nbuckets)
{
- clib_bihash_24_8_t new_hash;
+ clib_bihash_16_8_t new_hash;
memset (&new_hash, 0, sizeof (new_hash));
ip4_rehash_cb_ctx ctx;
ctx.failure = 0;
ctx.new_hash = &new_hash;
- clib_bihash_init_24_8 (&new_hash, "ip4-reass", new_nbuckets,
+ clib_bihash_init_16_8 (&new_hash, "ip4-reass", new_nbuckets,
new_nbuckets * 1024);
- clib_bihash_foreach_key_value_pair_24_8 (&ip4_reass_main.hash,
+ clib_bihash_foreach_key_value_pair_16_8 (&ip4_reass_main.hash,
ip4_rehash_cb, &ctx);
if (ctx.failure)
{
- clib_bihash_free_24_8 (&new_hash);
+ clib_bihash_free_16_8 (&new_hash);
return -1;
}
else
{
- clib_bihash_free_24_8 (&ip4_reass_main.hash);
+ clib_bihash_free_16_8 (&ip4_reass_main.hash);
clib_memcpy (&ip4_reass_main.hash, &new_hash,
sizeof (ip4_reass_main.hash));
}
@@ -1174,7 +1170,7 @@ ip4_reass_init_function (vlib_main_t * vm)
IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS);
nbuckets = ip4_reass_get_nbuckets ();
- clib_bihash_init_24_8 (&rm->hash, "ip4-reass", nbuckets, nbuckets * 1024);
+ clib_bihash_init_16_8 (&rm->hash, "ip4-reass", nbuckets, nbuckets * 1024);
node = vlib_get_node_by_name (vm, (u8 *) "ip4-drop");
ASSERT (node);
diff --git a/src/vnet/ip/ip6_reassembly.c b/src/vnet/ip/ip6_reassembly.c
index 3cc4c06fd76..ff62b01fd39 100644
--- a/src/vnet/ip/ip6_reassembly.c
+++ b/src/vnet/ip/ip6_reassembly.c
@@ -42,13 +42,10 @@ typedef struct
{
ip6_address_t src;
ip6_address_t dst;
- // align by making this 4 octets even though its a 2 octets field
u32 xx_id;
- // align by making this 4 octets even though its a 2 octets field
u32 frag_id;
- // align by making this 4 octets even though its a 1 octet field
- u32 proto;
- u32 unused;
+ u8 unused[7];
+ u8 proto;
};
u64 as_u64[6];
};
@@ -958,14 +955,14 @@ ip6_reassembly_inline (vlib_main_t * vm,
(u8 *) frag_hdr - (u8 *) ip0;
ip6_reass_key_t k;
- k.src.as_u64[0] = ip0->src_address.as_u64[0];
- k.src.as_u64[1] = ip0->src_address.as_u64[1];
- k.dst.as_u64[0] = ip0->dst_address.as_u64[0];
- k.dst.as_u64[1] = ip0->dst_address.as_u64[1];
- k.xx_id = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- k.frag_id = frag_hdr->identification;
- k.proto = ip0->protocol;
- k.unused = 0;
+ k.as_u64[0] = ip0->src_address.as_u64[0];
+ k.as_u64[1] = ip0->src_address.as_u64[1];
+ k.as_u64[2] = ip0->dst_address.as_u64[0];
+ k.as_u64[3] = ip0->dst_address.as_u64[1];
+ k.as_u64[4] =
+ (u64) vnet_buffer (b0)->
+ sw_if_index[VLIB_RX] << 32 | frag_hdr->identification;
+ k.as_u64[5] = ip0->protocol;
ip6_reass_t *reass =
ip6_reass_find_or_create (vm, node, rm, rt, &k, &icmp_bi,
&vec_timeout);