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-rw-r--r--src/vnet/CMakeLists.txt1
-rw-r--r--src/vnet/bonding/cli.c10
-rw-r--r--src/vnet/bonding/device.c364
-rw-r--r--src/vnet/bonding/node.h3
-rw-r--r--src/vnet/hash/hash_eth.c325
5 files changed, 409 insertions, 294 deletions
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index 81d697bf199..af4f64aef33 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -869,6 +869,7 @@ list(APPEND VNET_SOURCES
hash/cli.c
hash/crc32_5tuple.c
hash/handoff_eth.c
+ hash/hash_eth.c
)
list(APPEND VNET_HEADERS
diff --git a/src/vnet/bonding/cli.c b/src/vnet/bonding/cli.c
index d20c68606d8..c3593ab663e 100644
--- a/src/vnet/bonding/cli.c
+++ b/src/vnet/bonding/cli.c
@@ -408,6 +408,16 @@ bond_create_if (vlib_main_t * vm, bond_create_if_args_t * args)
bif->mode = args->mode;
bif->gso = args->gso;
+ if (bif->lb == BOND_LB_L2)
+ bif->hash_func =
+ vnet_hash_function_from_name ("hash-eth-l2", VNET_HASH_FN_TYPE_ETHERNET);
+ else if (bif->lb == BOND_LB_L34)
+ bif->hash_func = vnet_hash_function_from_name ("hash-eth-l34",
+ VNET_HASH_FN_TYPE_ETHERNET);
+ else if (bif->lb == BOND_LB_L23)
+ bif->hash_func = vnet_hash_function_from_name ("hash-eth-l23",
+ VNET_HASH_FN_TYPE_ETHERNET);
+
// Adjust requested interface id
if (bif->id == ~0)
bif->id = bif->dev_instance;
diff --git a/src/vnet/bonding/device.c b/src/vnet/bonding/device.c
index 9e949b87214..dcf7203fe9e 100644
--- a/src/vnet/bonding/device.c
+++ b/src/vnet/bonding/device.c
@@ -17,16 +17,9 @@
#define _GNU_SOURCE
#include <stdint.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/ip/ip4_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/ip/ip6_hop_by_hop_packet.h>
-#include <vnet/bonding/node.h>
-#include <vppinfra/lb_hash_hash.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ip-neighbor/ip_neighbor.h>
#include <vnet/ip-neighbor/ip4_neighbor.h>
#include <vnet/ip-neighbor/ip6_neighbor.h>
+#include <vnet/bonding/node.h>
#define foreach_bond_tx_error \
_ (NONE, "no error") \
@@ -194,8 +187,8 @@ bond_tx_add_to_queue (bond_per_thread_data_t * ptd, u32 port, u32 bi)
}
static_always_inline u32
-bond_lb_broadcast (vlib_main_t * vm,
- bond_if_t * bif, vlib_buffer_t * b0, uword n_members)
+bond_lb_broadcast (vlib_main_t *vm, bond_if_t *bif, vlib_buffer_t *b0,
+ uword n_members)
{
bond_main_t *bm = &bond_main;
vlib_buffer_t *c0;
@@ -220,230 +213,75 @@ bond_lb_broadcast (vlib_main_t * vm,
}
static_always_inline u32
-bond_lb_l2 (vlib_buffer_t * b0)
-{
- ethernet_header_t *eth = vlib_buffer_get_current (b0);
- u64 *dst = (u64 *) & eth->dst_address[0];
- u64 a = clib_mem_unaligned (dst, u64);
- u32 *src = (u32 *) & eth->src_address[2];
- u32 b = clib_mem_unaligned (src, u32);
-
- return lb_hash_hash_2_tuples (a, b);
-}
-
-static_always_inline u16 *
-bond_locate_ethertype (ethernet_header_t * eth)
+bond_lb_round_robin (bond_if_t *bif, vlib_buffer_t *b0, uword n_members)
{
- u16 *ethertype_p;
- ethernet_vlan_header_t *vlan;
+ bif->lb_rr_last_index++;
+ if (bif->lb_rr_last_index >= n_members)
+ bif->lb_rr_last_index = 0;
- if (!ethernet_frame_is_tagged (clib_net_to_host_u16 (eth->type)))
- {
- ethertype_p = &eth->type;
- }
- else
- {
- vlan = (void *) (eth + 1);
- ethertype_p = &vlan->type;
- if (*ethertype_p == ntohs (ETHERNET_TYPE_VLAN))
- {
- vlan++;
- ethertype_p = &vlan->type;
- }
- }
- return ethertype_p;
+ return bif->lb_rr_last_index;
}
-static_always_inline u32
-bond_lb_l23 (vlib_buffer_t * b0)
+static_always_inline void
+bond_tx_hash (vlib_main_t *vm, bond_per_thread_data_t *ptd, bond_if_t *bif,
+ vlib_buffer_t **b, u32 *h, u32 n_left)
{
- ethernet_header_t *eth = vlib_buffer_get_current (b0);
- u8 ip_version;
- ip4_header_t *ip4;
- u16 ethertype, *ethertype_p;
- u32 *mac1, *mac2, *mac3;
-
- ethertype_p = bond_locate_ethertype (eth);
- ethertype = clib_mem_unaligned (ethertype_p, u16);
+ u32 n_left_from = n_left;
+ void **data;
- if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
- (ethertype != htons (ETHERNET_TYPE_IP6)))
- return bond_lb_l2 (b0);
+ ASSERT (bif->hash_func != 0);
- ip4 = (ip4_header_t *) (ethertype_p + 1);
- ip_version = (ip4->ip_version_and_header_length >> 4);
-
- if (ip_version == 0x4)
- {
- u32 a, c;
-
- mac1 = (u32 *) & eth->dst_address[0];
- mac2 = (u32 *) & eth->dst_address[4];
- mac3 = (u32 *) & eth->src_address[2];
-
- a = clib_mem_unaligned (mac1, u32) ^ clib_mem_unaligned (mac2, u32) ^
- clib_mem_unaligned (mac3, u32);
- c =
- lb_hash_hash_2_tuples (clib_mem_unaligned (&ip4->address_pair, u64),
- a);
- return c;
- }
- else if (ip_version == 0x6)
+ vec_validate_aligned (ptd->data, n_left - 1, CLIB_CACHE_LINE_BYTES);
+ data = ptd->data;
+ while (n_left >= 8)
{
- u64 a;
- u32 c;
- ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
-
- mac1 = (u32 *) & eth->dst_address[0];
- mac2 = (u32 *) & eth->dst_address[4];
- mac3 = (u32 *) & eth->src_address[2];
-
- a = clib_mem_unaligned (mac1, u32) ^ clib_mem_unaligned (mac2, u32) ^
- clib_mem_unaligned (mac3, u32);
- c =
- lb_hash_hash (clib_mem_unaligned
- (&ip6->src_address.as_uword[0], uword),
- clib_mem_unaligned (&ip6->src_address.as_uword[1],
- uword),
- clib_mem_unaligned (&ip6->dst_address.as_uword[0],
- uword),
- clib_mem_unaligned (&ip6->dst_address.as_uword[1],
- uword), a);
- return c;
- }
- return bond_lb_l2 (b0);
-}
-
-static_always_inline u32
-bond_lb_l34 (vlib_buffer_t * b0)
-{
- ethernet_header_t *eth = vlib_buffer_get_current (b0);
- u8 ip_version;
- uword is_tcp_udp;
- ip4_header_t *ip4;
- u16 ethertype, *ethertype_p;
-
- ethertype_p = bond_locate_ethertype (eth);
- ethertype = clib_mem_unaligned (ethertype_p, u16);
-
- if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
- (ethertype != htons (ETHERNET_TYPE_IP6)))
- return (bond_lb_l2 (b0));
+ // Prefetch next iteration
+ vlib_prefetch_buffer_header (b[4], LOAD);
+ vlib_prefetch_buffer_header (b[5], LOAD);
+ vlib_prefetch_buffer_header (b[6], LOAD);
+ vlib_prefetch_buffer_header (b[7], LOAD);
- ip4 = (ip4_header_t *) (ethertype_p + 1);
- ip_version = (ip4->ip_version_and_header_length >> 4);
+ data[0] = vlib_buffer_get_current (b[0]);
+ data[1] = vlib_buffer_get_current (b[1]);
+ data[2] = vlib_buffer_get_current (b[2]);
+ data[3] = vlib_buffer_get_current (b[3]);
- if (ip_version == 0x4)
- {
- u32 a, t1, t2;
- tcp_header_t *tcp = (void *) (ip4 + 1);
-
- is_tcp_udp = (ip4->protocol == IP_PROTOCOL_TCP) ||
- (ip4->protocol == IP_PROTOCOL_UDP);
- t1 = is_tcp_udp ? clib_mem_unaligned (&tcp->src, u16) : 0;
- t2 = is_tcp_udp ? clib_mem_unaligned (&tcp->dst, u16) : 0;
- a = t1 ^ t2;
- return
- lb_hash_hash_2_tuples (clib_mem_unaligned (&ip4->address_pair, u64),
- a);
- }
- else if (ip_version == 0x6)
- {
- u64 a;
- u32 c, t1, t2;
- ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
- tcp_header_t *tcp = (void *) (ip6 + 1);
-
- is_tcp_udp = 0;
- if (PREDICT_TRUE ((ip6->protocol == IP_PROTOCOL_TCP) ||
- (ip6->protocol == IP_PROTOCOL_UDP)))
- {
- is_tcp_udp = 1;
- tcp = (void *) (ip6 + 1);
- }
- else if (ip6->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
- {
- ip6_hop_by_hop_header_t *hbh =
- (ip6_hop_by_hop_header_t *) (ip6 + 1);
- if ((hbh->protocol == IP_PROTOCOL_TCP)
- || (hbh->protocol == IP_PROTOCOL_UDP))
- {
- is_tcp_udp = 1;
- tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
- }
- }
- t1 = is_tcp_udp ? clib_mem_unaligned (&tcp->src, u16) : 0;
- t2 = is_tcp_udp ? clib_mem_unaligned (&tcp->dst, u16) : 0;
- a = t1 ^ t2;
- c =
- lb_hash_hash (clib_mem_unaligned
- (&ip6->src_address.as_uword[0], uword),
- clib_mem_unaligned (&ip6->src_address.as_uword[1],
- uword),
- clib_mem_unaligned (&ip6->dst_address.as_uword[0],
- uword),
- clib_mem_unaligned (&ip6->dst_address.as_uword[1],
- uword), a);
- return c;
+ n_left -= 4;
+ b += 4;
+ data += 4;
}
- return bond_lb_l2 (b0);
-}
+ while (n_left > 0)
+ {
+ data[0] = vlib_buffer_get_current (b[0]);
-static_always_inline u32
-bond_lb_round_robin (bond_if_t * bif, vlib_buffer_t * b0, uword n_members)
-{
- bif->lb_rr_last_index++;
- if (bif->lb_rr_last_index >= n_members)
- bif->lb_rr_last_index = 0;
+ n_left -= 1;
+ b += 1;
+ data += 1;
+ }
- return bif->lb_rr_last_index;
+ bif->hash_func (ptd->data, h, n_left_from);
+ vec_reset_length (ptd->data);
}
static_always_inline void
-bond_tx_inline (vlib_main_t * vm, bond_if_t * bif, vlib_buffer_t ** b,
- u32 * h, u32 n_left, uword n_members, u32 lb_alg)
+bond_tx_no_hash (vlib_main_t *vm, bond_if_t *bif, vlib_buffer_t **b, u32 *h,
+ u32 n_left, uword n_members, u32 lb_alg)
{
- while (n_left >= 4)
+ while (n_left >= 8)
{
// Prefetch next iteration
- if (n_left >= 8)
- {
- vlib_buffer_t **pb = b + 4;
+ vlib_prefetch_buffer_header (b[4], LOAD);
+ vlib_prefetch_buffer_header (b[5], LOAD);
+ vlib_prefetch_buffer_header (b[6], LOAD);
+ vlib_prefetch_buffer_header (b[7], LOAD);
- vlib_prefetch_buffer_header (pb[0], LOAD);
- vlib_prefetch_buffer_header (pb[1], LOAD);
- vlib_prefetch_buffer_header (pb[2], LOAD);
- vlib_prefetch_buffer_header (pb[3], LOAD);
+ clib_prefetch_load (b[4]->data);
+ clib_prefetch_load (b[5]->data);
+ clib_prefetch_load (b[6]->data);
+ clib_prefetch_load (b[7]->data);
- clib_prefetch_load (pb[0]->data);
- clib_prefetch_load (pb[1]->data);
- clib_prefetch_load (pb[2]->data);
- clib_prefetch_load (pb[3]->data);
- }
-
- if (lb_alg == BOND_LB_L2)
- {
- h[0] = bond_lb_l2 (b[0]);
- h[1] = bond_lb_l2 (b[1]);
- h[2] = bond_lb_l2 (b[2]);
- h[3] = bond_lb_l2 (b[3]);
- }
- else if (lb_alg == BOND_LB_L34)
- {
- h[0] = bond_lb_l34 (b[0]);
- h[1] = bond_lb_l34 (b[1]);
- h[2] = bond_lb_l34 (b[2]);
- h[3] = bond_lb_l34 (b[3]);
- }
- else if (lb_alg == BOND_LB_L23)
- {
- h[0] = bond_lb_l23 (b[0]);
- h[1] = bond_lb_l23 (b[1]);
- h[2] = bond_lb_l23 (b[2]);
- h[3] = bond_lb_l23 (b[3]);
- }
- else if (lb_alg == BOND_LB_RR)
+ if (lb_alg == BOND_LB_RR)
{
h[0] = bond_lb_round_robin (bif, b[0], n_members);
h[1] = bond_lb_round_robin (bif, b[1], n_members);
@@ -469,13 +307,7 @@ bond_tx_inline (vlib_main_t * vm, bond_if_t * bif, vlib_buffer_t ** b,
while (n_left > 0)
{
- if (bif->lb == BOND_LB_L2)
- h[0] = bond_lb_l2 (b[0]);
- else if (bif->lb == BOND_LB_L34)
- h[0] = bond_lb_l34 (b[0]);
- else if (bif->lb == BOND_LB_L23)
- h[0] = bond_lb_l23 (b[0]);
- else if (bif->lb == BOND_LB_RR)
+ if (bif->lb == BOND_LB_RR)
h[0] = bond_lb_round_robin (bif, b[0], n_members);
else if (bif->lb == BOND_LB_BC)
h[0] = bond_lb_broadcast (vm, bif, b[0], n_members);
@@ -496,40 +328,6 @@ bond_hash_to_port (u32 * h, u32 n_left, u32 n_members,
{
u32 mask = n_members - 1;
-#ifdef CLIB_HAVE_VEC256
- /* only lower 16 bits of hash due to single precision fp arithmetic */
- u32x8 mask8, sc8u, h8a, h8b;
- f32x8 sc8f;
-
- if (use_modulo_shortcut)
- {
- mask8 = u32x8_splat (mask);
- }
- else
- {
- mask8 = u32x8_splat (0xffff);
- sc8u = u32x8_splat (n_members);
- sc8f = f32x8_from_u32x8 (sc8u);
- }
-
- while (n_left > 16)
- {
- h8a = u32x8_load_unaligned (h) & mask8;
- h8b = u32x8_load_unaligned (h + 8) & mask8;
-
- if (use_modulo_shortcut == 0)
- {
- h8a -= sc8u * u32x8_from_f32x8 (f32x8_from_u32x8 (h8a) / sc8f);
- h8b -= sc8u * u32x8_from_f32x8 (f32x8_from_u32x8 (h8b) / sc8f);
- }
-
- u32x8_store_unaligned (h8a, h);
- u32x8_store_unaligned (h8b, h + 8);
- n_left -= 16;
- h += 16;
- }
-#endif
-
while (n_left > 4)
{
if (use_modulo_shortcut)
@@ -568,17 +366,13 @@ bond_update_sw_if_index (bond_per_thread_data_t * ptd, bond_if_t * bif,
u32 sw_if_index = data[0];
u32 *h = data;
- while (n_left >= 4)
+ while (n_left >= 8)
{
// Prefetch next iteration
- if (n_left >= 8)
- {
- vlib_buffer_t **pb = b + 4;
- vlib_prefetch_buffer_header (pb[0], LOAD);
- vlib_prefetch_buffer_header (pb[1], LOAD);
- vlib_prefetch_buffer_header (pb[2], LOAD);
- vlib_prefetch_buffer_header (pb[3], LOAD);
- }
+ vlib_prefetch_buffer_header (b[4], LOAD);
+ vlib_prefetch_buffer_header (b[5], LOAD);
+ vlib_prefetch_buffer_header (b[6], LOAD);
+ vlib_prefetch_buffer_header (b[7], LOAD);
if (PREDICT_FALSE (single_sw_if_index))
{
@@ -594,17 +388,14 @@ bond_update_sw_if_index (bond_per_thread_data_t * ptd, bond_if_t * bif,
}
else
{
- u32 sw_if_index[4];
-
- sw_if_index[0] = *vec_elt_at_index (bif->active_members, h[0]);
- sw_if_index[1] = *vec_elt_at_index (bif->active_members, h[1]);
- sw_if_index[2] = *vec_elt_at_index (bif->active_members, h[2]);
- sw_if_index[3] = *vec_elt_at_index (bif->active_members, h[3]);
-
- vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sw_if_index[0];
- vnet_buffer (b[1])->sw_if_index[VLIB_TX] = sw_if_index[1];
- vnet_buffer (b[2])->sw_if_index[VLIB_TX] = sw_if_index[2];
- vnet_buffer (b[3])->sw_if_index[VLIB_TX] = sw_if_index[3];
+ vnet_buffer (b[0])->sw_if_index[VLIB_TX] =
+ *vec_elt_at_index (bif->active_members, h[0]);
+ vnet_buffer (b[1])->sw_if_index[VLIB_TX] =
+ *vec_elt_at_index (bif->active_members, h[1]);
+ vnet_buffer (b[2])->sw_if_index[VLIB_TX] =
+ *vec_elt_at_index (bif->active_members, h[2]);
+ vnet_buffer (b[3])->sw_if_index[VLIB_TX] =
+ *vec_elt_at_index (bif->active_members, h[3]);
bond_tx_add_to_queue (ptd, h[0], bi[0]);
bond_tx_add_to_queue (ptd, h[1], bi[1]);
@@ -626,9 +417,8 @@ bond_update_sw_if_index (bond_per_thread_data_t * ptd, bond_if_t * bif,
}
else
{
- u32 sw_if_index0 = *vec_elt_at_index (bif->active_members, h[0]);
-
- vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sw_if_index0;
+ vnet_buffer (b[0])->sw_if_index[VLIB_TX] =
+ *vec_elt_at_index (bif->active_members, h[0]);
bond_tx_add_to_queue (ptd, h[0], bi[0]);
}
@@ -735,7 +525,7 @@ VNET_DEVICE_CLASS_TX_FN (bond_dev_class) (vlib_main_t * vm,
{
sw_if_index = *vec_elt_at_index (bif->active_members, 0);
- bond_tx_inline (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_BC);
+ bond_tx_no_hash (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_BC);
bond_tx_trace (vm, node, bif, bufs, frame->n_vectors, 0);
bond_update_sw_if_index (ptd, bif, from, bufs, &sw_if_index, n_left,
/* single_sw_if_index */ 1);
@@ -747,24 +537,10 @@ VNET_DEVICE_CLASS_TX_FN (bond_dev_class) (vlib_main_t * vm,
if (bif->n_numa_members >= 1)
n_members = bif->n_numa_members;
- if (bif->lb == BOND_LB_L2)
- bond_tx_inline (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_L2);
- else if (bif->lb == BOND_LB_L34)
- bond_tx_inline (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_L34);
- else if (bif->lb == BOND_LB_L23)
- bond_tx_inline (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_L23);
- else if (bif->lb == BOND_LB_RR)
- bond_tx_inline (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_RR);
+ if (bif->lb == BOND_LB_RR)
+ bond_tx_no_hash (vm, bif, bufs, hashes, n_left, n_members, BOND_LB_RR);
else
- {
- vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors);
- vlib_increment_simple_counter (
- vnet_main.interface_main.sw_if_counters + VNET_INTERFACE_COUNTER_DROP,
- thread_index, bif->sw_if_index, frame->n_vectors);
- vlib_error_count (vm, node->node_index, BOND_TX_ERROR_BAD_LB_MODE,
- frame->n_vectors);
- return frame->n_vectors;
- }
+ bond_tx_hash (vm, ptd, bif, bufs, hashes, n_left);
/* calculate port out of hash */
h = hashes;
diff --git a/src/vnet/bonding/node.h b/src/vnet/bonding/node.h
index 843c236f123..c6602ef01b9 100644
--- a/src/vnet/bonding/node.h
+++ b/src/vnet/bonding/node.h
@@ -21,6 +21,7 @@
#include <vppinfra/hash.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/interface.h>
+#include <vnet/hash/hash.h>
#define LACP_FAST_PERIODIC_TIMER 1.0
#define LACP_SHORT_TIMOUT_TIME (LACP_FAST_PERIODIC_TIMER * 3)
@@ -163,6 +164,7 @@ typedef struct
typedef struct
{
bond_per_port_queue_t *per_port_queue;
+ void **data;
} bond_per_thread_data_t;
typedef struct
@@ -208,6 +210,7 @@ typedef struct
u8 hw_address[6];
clib_spinlock_t lockp;
+ vnet_hash_fn_t hash_func;
} bond_if_t;
typedef struct
diff --git a/src/vnet/hash/hash_eth.c b/src/vnet/hash/hash_eth.c
new file mode 100644
index 00000000000..84a21b059be
--- /dev/null
+++ b/src/vnet/hash/hash_eth.c
@@ -0,0 +1,325 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/ip6_hop_by_hop_packet.h>
+#include <vppinfra/lb_hash_hash.h>
+#include <vnet/hash/hash.h>
+
+static_always_inline u16 *
+locate_ethertype (ethernet_header_t *eth)
+{
+ u16 *ethertype_p;
+ ethernet_vlan_header_t *vlan;
+
+ if (!ethernet_frame_is_tagged (clib_net_to_host_u16 (eth->type)))
+ {
+ ethertype_p = &eth->type;
+ }
+ else
+ {
+ vlan = (void *) (eth + 1);
+ ethertype_p = &vlan->type;
+ if (*ethertype_p == ntohs (ETHERNET_TYPE_VLAN))
+ {
+ vlan++;
+ ethertype_p = &vlan->type;
+ }
+ }
+ return ethertype_p;
+}
+
+static void
+hash_eth_l2 (void **p, u32 *hash, u32 n_packets)
+{
+ u32 n_left_from = n_packets;
+
+ while (n_left_from >= 8)
+ {
+ ethernet_header_t *eth = *p;
+ u64 *dst = (u64 *) &eth->dst_address[0];
+ u64 a = clib_mem_unaligned (dst, u64);
+ u32 *src = (u32 *) &eth->src_address[2];
+ u32 b = clib_mem_unaligned (src, u32);
+
+ clib_prefetch_load (p[4]);
+ clib_prefetch_load (p[5]);
+ clib_prefetch_load (p[6]);
+ clib_prefetch_load (p[7]);
+
+ hash[0] = lb_hash_hash_2_tuples (a, b);
+ hash[1] = lb_hash_hash_2_tuples (a, b);
+ hash[2] = lb_hash_hash_2_tuples (a, b);
+ hash[3] = lb_hash_hash_2_tuples (a, b);
+
+ hash += 4;
+ n_left_from -= 4;
+ p += 4;
+ }
+
+ while (n_left_from > 0)
+ {
+ ethernet_header_t *eth = *p;
+ u64 *dst = (u64 *) &eth->dst_address[0];
+ u64 a = clib_mem_unaligned (dst, u64);
+ u32 *src = (u32 *) &eth->src_address[2];
+ u32 b = clib_mem_unaligned (src, u32);
+
+ hash[0] = lb_hash_hash_2_tuples (a, b);
+
+ hash += 1;
+ n_left_from -= 1;
+ p += 1;
+ }
+}
+
+static_always_inline u32
+hash_eth_l23_inline (void **p)
+{
+ ethernet_header_t *eth = *p;
+ u8 ip_version;
+ ip4_header_t *ip4;
+ u16 ethertype, *ethertype_p;
+ u32 *mac1, *mac2, *mac3;
+ u32 hash;
+
+ ethertype_p = locate_ethertype (eth);
+ ethertype = clib_mem_unaligned (ethertype_p, u16);
+
+ if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
+ (ethertype != htons (ETHERNET_TYPE_IP6)))
+ {
+ hash_eth_l2 (p, &hash, 1);
+ return hash;
+ }
+
+ ip4 = (ip4_header_t *) (ethertype_p + 1);
+ ip_version = (ip4->ip_version_and_header_length >> 4);
+
+ if (ip_version == 0x4)
+ {
+ u32 a;
+
+ mac1 = (u32 *) &eth->dst_address[0];
+ mac2 = (u32 *) &eth->dst_address[4];
+ mac3 = (u32 *) &eth->src_address[2];
+
+ a = clib_mem_unaligned (mac1, u32) ^ clib_mem_unaligned (mac2, u32) ^
+ clib_mem_unaligned (mac3, u32);
+ hash = lb_hash_hash_2_tuples (
+ clib_mem_unaligned (&ip4->address_pair, u64), a);
+ return hash;
+ }
+
+ if (ip_version == 0x6)
+ {
+ u64 a;
+ ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
+
+ mac1 = (u32 *) &eth->dst_address[0];
+ mac2 = (u32 *) &eth->dst_address[4];
+ mac3 = (u32 *) &eth->src_address[2];
+
+ a = clib_mem_unaligned (mac1, u32) ^ clib_mem_unaligned (mac2, u32) ^
+ clib_mem_unaligned (mac3, u32);
+ hash = lb_hash_hash (
+ clib_mem_unaligned (&ip6->src_address.as_uword[0], uword),
+ clib_mem_unaligned (&ip6->src_address.as_uword[1], uword),
+ clib_mem_unaligned (&ip6->dst_address.as_uword[0], uword),
+ clib_mem_unaligned (&ip6->dst_address.as_uword[1], uword), a);
+ return hash;
+ }
+
+ hash_eth_l2 (p, &hash, 1);
+ return hash;
+}
+
+static void
+hash_eth_l23 (void **p, u32 *hash, u32 n_packets)
+{
+ u32 n_left_from = n_packets;
+
+ while (n_left_from >= 8)
+ {
+ clib_prefetch_load (p[4]);
+ clib_prefetch_load (p[5]);
+ clib_prefetch_load (p[6]);
+ clib_prefetch_load (p[7]);
+
+ hash[0] = hash_eth_l23_inline (&p[0]);
+ hash[1] = hash_eth_l23_inline (&p[1]);
+ hash[2] = hash_eth_l23_inline (&p[2]);
+ hash[3] = hash_eth_l23_inline (&p[3]);
+
+ hash += 4;
+ n_left_from -= 4;
+ p += 4;
+ }
+
+ while (n_left_from > 0)
+ {
+ hash[0] = hash_eth_l23_inline (&p[0]);
+
+ hash += 1;
+ n_left_from -= 1;
+ p += 1;
+ }
+}
+
+static_always_inline u32
+hash_eth_l34_inline (void **p)
+{
+ ethernet_header_t *eth = *p;
+ u8 ip_version;
+ uword is_tcp_udp;
+ ip4_header_t *ip4;
+ u16 ethertype, *ethertype_p;
+ u32 hash;
+
+ ethertype_p = locate_ethertype (eth);
+ ethertype = clib_mem_unaligned (ethertype_p, u16);
+
+ if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
+ (ethertype != htons (ETHERNET_TYPE_IP6)))
+ {
+ hash_eth_l2 (p, &hash, 1);
+ return hash;
+ }
+
+ ip4 = (ip4_header_t *) (ethertype_p + 1);
+ ip_version = (ip4->ip_version_and_header_length >> 4);
+
+ if (ip_version == 0x4)
+ {
+ u32 a, t1, t2;
+ tcp_header_t *tcp = (void *) (ip4 + 1);
+
+ is_tcp_udp = (ip4->protocol == IP_PROTOCOL_TCP) ||
+ (ip4->protocol == IP_PROTOCOL_UDP);
+ t1 = is_tcp_udp ? clib_mem_unaligned (&tcp->src, u16) : 0;
+ t2 = is_tcp_udp ? clib_mem_unaligned (&tcp->dst, u16) : 0;
+ a = t1 ^ t2;
+ hash = lb_hash_hash_2_tuples (
+ clib_mem_unaligned (&ip4->address_pair, u64), a);
+ return hash;
+ }
+
+ if (ip_version == 0x6)
+ {
+ u64 a;
+ u32 t1, t2;
+ ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
+ tcp_header_t *tcp = (void *) (ip6 + 1);
+
+ is_tcp_udp = 0;
+ if (PREDICT_TRUE ((ip6->protocol == IP_PROTOCOL_TCP) ||
+ (ip6->protocol == IP_PROTOCOL_UDP)))
+ {
+ is_tcp_udp = 1;
+ tcp = (void *) (ip6 + 1);
+ }
+ else if (ip6->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
+ {
+ ip6_hop_by_hop_header_t *hbh = (ip6_hop_by_hop_header_t *) (ip6 + 1);
+ if ((hbh->protocol == IP_PROTOCOL_TCP) ||
+ (hbh->protocol == IP_PROTOCOL_UDP))
+ {
+ is_tcp_udp = 1;
+ tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
+ }
+ }
+ t1 = is_tcp_udp ? clib_mem_unaligned (&tcp->src, u16) : 0;
+ t2 = is_tcp_udp ? clib_mem_unaligned (&tcp->dst, u16) : 0;
+ a = t1 ^ t2;
+ hash = lb_hash_hash (
+ clib_mem_unaligned (&ip6->src_address.as_uword[0], uword),
+ clib_mem_unaligned (&ip6->src_address.as_uword[1], uword),
+ clib_mem_unaligned (&ip6->dst_address.as_uword[0], uword),
+ clib_mem_unaligned (&ip6->dst_address.as_uword[1], uword), a);
+ return hash;
+ }
+
+ hash_eth_l2 (p, &hash, 1);
+ return hash;
+}
+
+static void
+hash_eth_l34 (void **p, u32 *hash, u32 n_packets)
+{
+ u32 n_left_from = n_packets;
+
+ while (n_left_from >= 8)
+ {
+ clib_prefetch_load (p[4]);
+ clib_prefetch_load (p[5]);
+ clib_prefetch_load (p[6]);
+ clib_prefetch_load (p[7]);
+
+ hash[0] = hash_eth_l34_inline (&p[0]);
+ hash[1] = hash_eth_l34_inline (&p[1]);
+ hash[2] = hash_eth_l34_inline (&p[2]);
+ hash[3] = hash_eth_l34_inline (&p[3]);
+
+ hash += 4;
+ n_left_from -= 4;
+ p += 4;
+ }
+
+ while (n_left_from > 0)
+ {
+ hash[0] = hash_eth_l34_inline (&p[0]);
+
+ hash += 1;
+ n_left_from -= 1;
+ p += 1;
+ }
+}
+
+VNET_REGISTER_HASH_FUNCTION (hash_eth_l2, static) = {
+ .name = "hash-eth-l2",
+ .description = "Hash ethernet L2 headers",
+ .priority = 50,
+ .function[VNET_HASH_FN_TYPE_ETHERNET] = hash_eth_l2,
+};
+
+VNET_REGISTER_HASH_FUNCTION (hash_eth_l23, static) = {
+ .name = "hash-eth-l23",
+ .description = "Hash ethernet L23 headers",
+ .priority = 50,
+ .function[VNET_HASH_FN_TYPE_ETHERNET] = hash_eth_l23,
+};
+
+VNET_REGISTER_HASH_FUNCTION (hash_eth_l34, static) = {
+ .name = "hash-eth-l34",
+ .description = "Hash ethernet L34 headers",
+ .priority = 50,
+ .function[VNET_HASH_FN_TYPE_ETHERNET] = hash_eth_l34,
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */