/*
*------------------------------------------------------------------
* Copyright (c) 2017 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 <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>
#define foreach_bond_tx_error \
_ (NONE, "no error") \
_ (IF_DOWN, "interface down") \
_ (BAD_LB_MODE, "bad load balance mode") \
_ (NO_MEMBER, "no member")
typedef enum
{
#define _(f,s) BOND_TX_ERROR_##f,
foreach_bond_tx_error
#undef _
BOND_TX_N_ERROR,
} bond_tx_error_t;
static char *bond_tx_error_strings[] = {
#define _(n,s) s,
foreach_bond_tx_error
#undef _
};
static u8 *
format_bond_tx_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
bond_packet_trace_t *t = va_arg (*args, bond_packet_trace_t *);
vnet_hw_interface_t *hw, *hw1;
vnet_main_t *vnm = vnet_get_main ();
hw = vnet_get_sup_hw_interface (vnm, t->sw_if_index);
hw1 = vnet_get_sup_hw_interface (vnm, t->bond_sw_if_index);
s = format (s, "src %U, dst %U, %s -> %s",
format_ethernet_address, t->ethernet.src_address,
format_ethernet_address, t->ethernet.dst_address,
hw->name, hw1->name);
return s;
}
#ifndef CLIB_MARCH_VARIANT
u8 *
format_bond_interface_name (u8 * s, va_list * args)
{
u32 dev_instance = va_arg (*args, u32);
bond_main_t *bm = &bond_main;
bond_if_t *bif = pool_elt_at_index (bm->interfaces, dev_instance);
s = format (s, "BondEthernet%lu", bif->id);
return s;
}
#endif
static __clib_unused clib_error_t *
bond_set_l2_mode_function (vnet_main_t * vnm,
struct vnet_hw_interface_t *bif_hw,
i32 l2_if_adjust)
{
bond_if_t *bif;
u32 *sw_if_index;
struct vnet_hw_interface_t *mif_hw;
bif = bond_get_bond_if_by_sw_if_index (bif_hw->sw_if_index);
if (!bif)
return 0;
if ((bif_hw->l2_if_count == 1) && (l2_if_adjust == 1))
{
/* Just added first L2 interface on this port */
vec_foreach (sw_if_index, bif->members)
{
mif_hw = vnet_get_sup_hw_interface (vnm, *sw_if_index);
ethernet_set_flags (vnm, mif_hw->hw_if_index,
ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
}
}
else if ((bif_hw->l2_if_count == 0) && (l2_if_adjust == -1))
{
/* Just removed last L2 subinterface on this port */
vec_foreach (sw_if_index, bif->members)
{
mif_hw = vnet_get_sup_hw_interface (vnm, *sw_if_index);
ethernet_set_flags (vnm, mif_hw->hw_if_index,
/*ETHERNET_INTERFACE_FLAG_DEFAULT_L3 */ 0);
}
}
return 0;
}
static __clib_unused clib_error_t *
bond_subif_add_del_function (vnet_main_t * vnm, u32 hw_if_index,
struct vnet_sw_interface_t *st, int is_add)
{
/* Nothing for now */
return 0;
}
static clib_error_t *
bond_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
{
vnet_hw_interface_t *hif = vnet_get_hw_interface (vnm, hw_if_index);
uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
bond_main_t *bm = &bond_main;
bond_if_t *bif = pool_elt_at_index (bm->interfaces, hif->dev_instance);
bif->admin_up = is_up;
if (is_up)
vnet_hw_interface_set_flags (vnm, bif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
return 0;
}
static clib_error_t *
bond_add_del_mac_address (vnet_hw_interface_t * hi, const u8 * address,
u8 is_add)
{
vnet_main_t *vnm = vnet_get_main ();
bond_if_t *bif;
clib_error_t *error = 0;
vnet_hw_interface_t *s_hi;
int i;
bif = bond_get_bond_if_by_sw_if_index (hi->sw_if_index);
if (!bif)
{
return clib_error_return (0,
"No bond interface found for sw_if_index %u",
hi->sw_if_index);
}
/* Add/del address on each member hw intf, they control the hardware */
vec_foreach_index (i, bif->members)
{
s_hi = vnet_get_sup_hw_interface (vnm, vec_elt (bif->members, i));
error = vnet_hw_interface_add_del_mac_address (vnm, s_hi->hw_if_index,
address, is_add);
if (error)
{
int j;
/* undo any that were completed before the failure */
for (j = i - 1; j > -1; j--)
{
s_hi = vnet_get_sup_hw_interface (vnm, vec_elt (bif->members, j));
vnet_hw_interface_add_del_mac_address (vnm, s_hi->hw_if_index,
address, !(is_add));
}
return error;
}
}
return 0;
}
static_always_inline void
bond_tx_add_to_queue (bond_per_thread_data_t * ptd, u32 port, u32 bi)
{
u32 idx = ptd->per_port_queue[port].n_buffers++;
ptd->per_port_queue[port].buffers[idx] = bi;
}
static_always_inline u32
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;
int port;
u32 sw_if_index;
u16 thread_index = vm->thread_index;
bond_per_thread_data_t *ptd = vec_elt_at_index (bm->per_thread_data,
thread_index);
for (port = 1; port < n_members; port++)
{
sw_if_index = *vec_elt_at_index (bif->active_members, port);
c0 = vlib_buffer_copy (vm, b0);
if (PREDICT_TRUE (c0 != 0))
{
vnet_buffer (c0)->sw_if_index[VLIB_TX] = sw_if_index;
bond_tx_add_to_queue (ptd, port, vlib_get_buffer_index (vm, c0));
}
}
return 0;
}
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)
{
u16 *ethertype_p;
ethernet_vlan_header_t *vlan;
if (!ethernet_frame_is_tagged (clib_net_to_host_u16 (eth->type)))
{
ethertype_p = ð->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_always_inline u32
bond_lb_l23 (vlib_buffer_t * b0)
{
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);
if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
(ethertype != htons (ETHERNET_TYPE_IP6)))
return bond_lb_l2 (b0);
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)
{
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));
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;
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;
}
return bond_lb_l2 (b0);
}
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;
return bif->lb_rr_last_index;
}
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)
{
while (n_left >= 4)
{
// 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);
CLIB_PREFETCH (pb[0]->data, CLIB_CACHE_LINE_BYTES, LOAD);
CLIB_PREFETCH (pb[1]->data, CLIB_CACHE_LINE_BYTES, LOAD);
CLIB_PREFETCH (pb[2]->data, CLIB_CACHE_LINE_BYTES, LOAD);
CLIB_PREFETCH (pb[3]->data, CLIB_CACHE_LINE_BYTES, LOAD);
}
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[2]);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[3]);
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)
{
h[0] = bond_lb_round_robin (bif, b[0], n_members);
h[1] = bond_lb_round_robin (bif, b[1], n_members);
h[2] = bond_lb_round_robin (bif, b[2], n_members);
h[3] = bond_lb_round_robin (bif, b[3], n_members);
}
else if (lb_alg == BOND_LB_BC)
{
h[0] = bond_lb_broadcast (vm, bif, b[0], n_members);
h[1] = bond_lb_broadcast (vm, bif, b[1], n_members);
h[2] = bond_lb_broadcast (vm, bif, b[2], n_members);
h[3] = bond_lb_broadcast (vm, bif, b[3], n_members);
}
else
{
ASSERT (0);
}
n_left -= 4;
b += 4;
h += 4;
}
while (n_left > 0)
{
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[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)
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);
else
{
ASSERT (0);
}
n_left -= 1;
b += 1;
h += 1;
}
}
static_always_inline void
bond_hash_to_port (u32 * h, u32 n_left, u32 n_members,
int use_modulo_shortcut)
{
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)
{
h[0] &= mask;
h[1] &= mask;
h[2] &= mask;
h[3] &= mask;
}
else
{
h[0] %= n_members;
h[1] %= n_members;
h[2] %= n_members;
h[3] %= n_members;
}
n_left -= 4;
h += 4;
}
while (n_left)
{
if (use_modulo_shortcut)
h[0] &= mask;
else
h[0] %= n_members;
n_left -= 1;
h += 1;
}
}
static_always_inline void
bond_update_sw_if_index (bond_per_thread_data_t * ptd, bond_if_t * bif,
u32 * bi, vlib_buffer_t ** b, u32 * data, u32 n_left,
int single_sw_if_index)
{
u32 sw_if_index = data[0];
u32 *h = data;
while (n_left >= 4)
{
// 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);
}
if (PREDICT_FALSE (single_sw_if_index))
{
vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sw_if_index;
vnet_buffer (b[1])->sw_if_index[VLIB_TX] = sw_if_index;
vnet_buffer (b[2])->sw_if_index[VLIB_TX] = sw_if_index;
vnet_buffer (b[3])->sw_if_index[VLIB_TX] = sw_if_index;
bond_tx_add_to_queue (ptd, 0, bi[0]);
bond_tx_add_to_queue (ptd, 0, bi[1]);
bond_tx_add_to_queue (ptd, 0, bi[2]);
bond_tx_add_to_queue (ptd, 0, bi[3]);
}
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];
bond_tx_add_to_queue (ptd, h[0], bi[0]);
bond_tx_add_to_queue (ptd, h[1], bi[1]);
bond_tx_add_to_queue (ptd, h[2], bi[2]);
bond_tx_add_to_queue (ptd, h[3], bi[3]);
}
bi += 4;
h += 4;
b += 4;
n_left -= 4;
}
while (n_left)
{
if (PREDICT_FALSE (single_sw_if_index))
{
vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sw_if_index;
bond_tx_add_to_queue (ptd, 0, bi[0]);
}
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;
bond_tx_add_to_queue (ptd, h[0], bi[0]);
}
bi += 1;
h += 1;
b += 1;
n_left -= 1;
}
}
static_always_inline void
bond_tx_trace (vlib_main_t * vm, vlib_node_runtime_t * node, bond_if_t * bif,
vlib_buffer_t ** b, u32 n_left, u32 * h)
{
uword n_trace = vlib_get_trace_count (vm, node);
while (n_trace > 0 && n_left > 0)
{
if (PREDICT_TRUE
(vlib_trace_buffer (vm, node, 0, b[0], 0 /* follow_chain */ )))
{
bond_packet_trace_t *t0;
ethernet_header_t *eth;
vlib_set_trace_count (vm, node, --n_trace);
t0 = vlib_add_trace (vm, node, b[0], sizeof (*t0));
eth = vlib_buffer_get_current (b[0]);
t0->ethernet = *eth;
t0->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
if (!h)
{
t0->bond_sw_if_index =
*vec_elt_at_index (bif->active_members, 0);
}
else
{
t0->bond_sw_if_index =
*vec_elt_at_index (bif->active_members, h[0]);
h++;
}
}
b++;
n_left--;
}
}
VNET_DEVICE_CLASS_TX_FN (bond_dev_class) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
bond_main_t *bm = &bond_main;
u16 thread_index = vm->thread_index;
bond_if_t *bif = pool_elt_at_index (bm->interfaces, rund->dev_instance);
uword n_members;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
u32 *from = vlib_frame_vector_args (frame);
u32 n_left = frame->n_vectors;
u32 hashes[VLIB_FRAME_SIZE], *h;
vnet_main_t *vnm = vnet_get_main ();
bond_per_thread_data_t *ptd = vec_elt_at_index (bm->per_thread_data,
thread_index);
u32 p, sw_if_index;
if (PREDICT_FALSE (bif->admin_up == 0))
{
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_IF_DOWN,
frame->n_vectors);
return frame->n_vectors;
}
n_members = vec_len (bif->active_members);
if (PREDICT_FALSE (n_members == 0))
{
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_NO_MEMBER,
frame->n_vectors);
return frame->n_vectors;
}
vlib_get_buffers (vm, from, bufs, n_left);
/* active-backup mode, ship everything to first sw if index */
if ((bif->lb == BOND_LB_AB) || PREDICT_FALSE (n_members == 1))
{
sw_if_index = *vec_elt_at_index (bif->active_members, 0);
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);
goto done;
}
if (bif->lb == BOND_LB_BC)
{
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_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);
goto done;
}
/* if have at least one member on local numa node, only members on local numa
node will transmit pkts when bif->local_numa_only is enabled */
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);
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;
}
/* calculate port out of hash */
h = hashes;
if (BOND_MODULO_SHORTCUT (n_members))
bond_hash_to_port (h, frame->n_vectors, n_members, 1);
else
bond_hash_to_port (h, frame->n_vectors, n_members, 0);
bond_tx_trace (vm, node, bif, bufs, frame->n_vectors, h);
bond_update_sw_if_index (ptd, bif, from, bufs, hashes, frame->n_vectors,
/* single_sw_if_index */ 0);
done:
for (p = 0; p < n_members; p++)
{
vlib_frame_t *f;
u32 *to_next;
sw_if_index = *vec_elt_at_index (bif->active_members, p);
if (PREDICT_TRUE (ptd->per_port_queue[p].n_buffers))
{
f = vnet_get_frame_to_sw_interface (vnm, sw_if_index);
f->n_vectors = ptd->per_port_queue[p].n_buffers;
to_next = vlib_frame_vector_args (f);
clib_memcpy_fast (to_next, ptd->per_port_queue[p].buffers,
f->n_vectors * sizeof (u32));
vnet_put_frame_to_sw_interface (vnm, sw_if_index, f);
ptd->per_port_queue[p].n_buffers = 0;
}
}
return frame->n_vectors;
}
static walk_rc_t
bond_active_interface_switch_cb (vnet_main_t * vnm, u32 sw_if_index,
void *arg)
{
bond_main_t *bm = &bond_main;
ip4_neighbor_advertise (bm->vlib_main, bm->vnet_main, sw_if_index, NULL);
ip6_neighbor_advertise (bm->vlib_main, bm->vnet_main, sw_if_index, NULL);
return (WALK_CONTINUE);
}
static uword
bond_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
{
vnet_main_t *vnm = vnet_get_main ();
uword event_type, *event_data = 0;
while (1)
{
u32 i;
u32 hw_if_index;
vlib_process_wait_for_event (vm);
event_type = vlib_process_get_events (vm, &event_data);
ASSERT (event_type == BOND_SEND_GARP_NA);
for (i = 0; i < vec_len (event_data); i++)
{
hw_if_index = event_data[i];
if (vnet_get_hw_interface_or_null (vnm, hw_if_index))
/* walk hw interface to process all subinterfaces */
vnet_hw_interface_walk_sw (vnm, hw_if_index,
bond_active_interface_switch_cb, 0);
}
vec_reset_length (event_data);
}
return 0;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (bond_process_node) = {
.function = bond_process,
.flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "bond-process",
};
/* *INDENT-ON* */
/* *INDENT-OFF* */
VNET_DEVICE_CLASS (bond_dev_class) = {
.name = "bond",
.tx_function_n_errors = BOND_TX_N_ERROR,
.tx_function_error_strings = bond_tx_error_strings,
.format_device_name = format_bond_interface_name,
.set_l2_mode_function = bond_set_l2_mode_function,
.admin_up_down_function = bond_interface_admin_up_down,
.subif_add_del_function = bond_subif_add_del_function,
.format_tx_trace = format_bond_tx_trace,
.mac_addr_add_del_function = bond_add_del_mac_address,
};
/* *INDENT-ON* */
static clib_error_t *
bond_member_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
{
bond_main_t *bm = &bond_main;
member_if_t *mif;
bond_detach_member_args_t args = { 0 };
if (is_add)
return 0;
mif = bond_get_member_by_sw_if_index (sw_if_index);
if (!mif)
return 0;
args.member = sw_if_index;
bond_detach_member (bm->vlib_main, &args);
return args.error;
}
VNET_SW_INTERFACE_ADD_DEL_FUNCTION (bond_member_interface_add_del);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/