diff options
Diffstat (limited to 'src/vnet/bonding/device.c')
| -rw-r--r-- | src/vnet/bonding/device.c | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/src/vnet/bonding/device.c b/src/vnet/bonding/device.c new file mode 100644 index 00000000000..8f9b3a95591 --- /dev/null +++ b/src/vnet/bonding/device.c @@ -0,0 +1,610 @@ +/* + *------------------------------------------------------------------ + * 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> + +#define foreach_bond_tx_error \ + _(NONE, "no error") \ + _(IF_DOWN, "interface down") \ + _(NO_SLAVE, "no slave") + +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; +} + +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->dev_instance); + + return s; +} + +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 && vec_len (bif->active_slaves)) + vnet_hw_interface_set_flags (vnm, bif->hw_if_index, + VNET_HW_INTERFACE_FLAG_LINK_UP); + return 0; +} + +static inline u32 +bond_load_balance_broadcast (vlib_main_t * vm, vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + vnet_main_t *vnm = vnet_get_main (); + vlib_buffer_t *c0; + int i; + u32 *to_next = 0; + u32 sw_if_index; + vlib_frame_t *f; + + + for (i = 1; i < vec_len (bif->active_slaves); i++) + { + sw_if_index = *vec_elt_at_index (bif->active_slaves, i); + f = vnet_get_frame_to_sw_interface (vnm, sw_if_index); + to_next = vlib_frame_vector_args (f); + to_next += f->n_vectors; + c0 = vlib_buffer_copy (vm, b0); + if (PREDICT_TRUE (c0 != 0)) + { + vnet_buffer (c0)->sw_if_index[VLIB_TX] = sw_if_index; + to_next[0] = vlib_get_buffer_index (vm, c0); + f->n_vectors++; + vnet_put_frame_to_sw_interface (vnm, sw_if_index, f); + } + } + + return 0; +} + +static inline u32 +bond_load_balance_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0); + u32 a = 0, b = 0, c = 0, t1, t2; + u16 t11, t22; + + memcpy (&t1, eth->src_address, sizeof (t1)); + memcpy (&t11, ð->src_address[4], sizeof (t11)); + a = t1 ^ t11; + + memcpy (&t2, eth->dst_address, sizeof (t2)); + memcpy (&t22, ð->dst_address[4], sizeof (t22)); + b = t2 ^ t22; + + hash_v3_mix32 (a, b, c); + hash_v3_finalize32 (a, b, c); + + return c % vec_len (bif->active_slaves); +} + +static 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 inline u32 +bond_load_balance_l23 (vlib_main_t * vm, vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0); + u8 ip_version; + ip4_header_t *ip4; + u16 ethertype, *ethertype_p; + + ethertype_p = bond_locate_ethertype (eth); + ethertype = *ethertype_p; + + if ((ethertype != htons (ETHERNET_TYPE_IP4)) && + (ethertype != htons (ETHERNET_TYPE_IP6))) + return (bond_load_balance_l2 (vm, node, bif, b0)); + + ip4 = (ip4_header_t *) (ethertype_p + 1); + ip_version = (ip4->ip_version_and_header_length >> 4); + + if (ip_version == 0x4) + { + u16 t11, t22; + u32 a = 0, b = 0, c = 0, t1, t2; + + memcpy (&t1, eth->src_address, sizeof (t1)); + memcpy (&t11, ð->src_address[4], sizeof (t11)); + a = t1 ^ t11; + + memcpy (&t2, eth->dst_address, sizeof (t2)); + memcpy (&t22, ð->dst_address[4], sizeof (t22)); + b = t2 ^ t22; + + c = ip4->src_address.data_u32 ^ ip4->dst_address.data_u32; + + hash_v3_mix32 (a, b, c); + hash_v3_finalize32 (a, b, c); + + return c % vec_len (bif->active_slaves); + } + else if (ip_version == 0x6) + { + u64 a, b, c; + u64 t1 = 0, t2 = 0; + ip6_header_t *ip6 = (ip6_header_t *) (eth + 1); + + memcpy (&t1, eth->src_address, sizeof (eth->src_address)); + memcpy (&t2, eth->dst_address, sizeof (eth->dst_address)); + a = t1 ^ t2; + + b = (ip6->src_address.as_u64[0] ^ ip6->src_address.as_u64[1]); + c = (ip6->dst_address.as_u64[0] ^ ip6->dst_address.as_u64[1]); + + hash_mix64 (a, b, c); + return c % vec_len (bif->active_slaves); + } + return (bond_load_balance_l2 (vm, node, bif, b0)); +} + +static inline u32 +bond_load_balance_l34 (vlib_main_t * vm, vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0); + u8 ip_version; + uword is_tcp_udp = 0; + ip4_header_t *ip4; + u16 ethertype, *ethertype_p; + + ethertype_p = bond_locate_ethertype (eth); + ethertype = *ethertype_p; + + if ((ethertype != htons (ETHERNET_TYPE_IP4)) && + (ethertype != htons (ETHERNET_TYPE_IP6))) + return (bond_load_balance_l2 (vm, node, bif, b0)); + + ip4 = (ip4_header_t *) (ethertype_p + 1); + ip_version = (ip4->ip_version_and_header_length >> 4); + + if (ip_version == 0x4) + { + u32 a = 0, b = 0, c = 0, t1, t2; + tcp_header_t *tcp = (void *) (ip4 + 1); + is_tcp_udp = (ip4->protocol == IP_PROTOCOL_TCP) || + (ip4->protocol == IP_PROTOCOL_UDP); + + a = ip4->src_address.data_u32 ^ ip4->dst_address.data_u32; + + t1 = is_tcp_udp ? tcp->src : 0; + t2 = is_tcp_udp ? tcp->dst : 0; + b = t1 + (t2 << 16); + + hash_v3_mix32 (a, b, c); + hash_v3_finalize32 (a, b, c); + + return c % vec_len (bif->active_slaves); + } + else if (ip_version == 0x6) + { + u64 a, b, c; + u64 t1, t2; + ip6_header_t *ip6 = (ip6_header_t *) (eth + 1); + tcp_header_t *tcp = (void *) (ip6 + 1); + + 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)); + } + } + a = (ip6->src_address.as_u64[0] ^ ip6->src_address.as_u64[1]); + b = (ip6->dst_address.as_u64[0] ^ ip6->dst_address.as_u64[1]); + + t1 = is_tcp_udp ? tcp->src : 0; + t2 = is_tcp_udp ? tcp->dst : 0; + c = (t2 << 16) | t1; + hash_mix64 (a, b, c); + + return c % vec_len (bif->active_slaves); + } + + return (bond_load_balance_l2 (vm, node, bif, b0)); +} + +static inline u32 +bond_load_balance_round_robin (vlib_main_t * vm, + vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + bif->lb_rr_last_index++; + bif->lb_rr_last_index %= vec_len (bif->active_slaves); + + return bif->lb_rr_last_index; +} + +static inline u32 +bond_load_balance_active_backup (vlib_main_t * vm, + vlib_node_runtime_t * node, + bond_if_t * bif, vlib_buffer_t * b0) +{ + /* First interface is the active, the rest is backup */ + return 0; +} + +static bond_load_balance_func_t bond_load_balance_table[] = { +#define _(v,f,s, p) { bond_load_balance_##p }, + foreach_bond_lb_algo +#undef _ +}; + +static uword +bond_tx_fn (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; + bond_if_t *bif = pool_elt_at_index (bm->interfaces, rund->dev_instance); + u32 bi0, bi1, bi2, bi3; + vlib_buffer_t *b0, *b1, *b2, *b3; + u32 *from = vlib_frame_vector_args (frame); + u32 n_left_from; + ethernet_header_t *eth; + u32 next0 = 0, next1 = 0, next2 = 0, next3 = 0; + u32 port, port1, port2, port3; + u32 sw_if_index, sw_if_index1, sw_if_index2, sw_if_index3; + bond_packet_trace_t *t0; + uword n_trace = vlib_get_trace_count (vm, node); + u16 thread_index = vlib_get_thread_index (); + vnet_main_t *vnm = vnet_get_main (); + u32 *to_next, *to_next1, *to_next2, *to_next3; + u32 sif_if_index, sif_if_index1, sif_if_index2, sif_if_index3; + vlib_frame_t *f, *f1, *f2, *f3; + + if (PREDICT_FALSE (bif->admin_up == 0)) + { + vlib_buffer_free (vm, vlib_frame_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; + } + + if (PREDICT_FALSE (vec_len (bif->active_slaves) == 0)) + { + bi0 = from[0]; + b0 = vlib_get_buffer (vm, bi0); + vlib_increment_combined_counter + (vnet_main.interface_main.combined_sw_if_counters + + VNET_INTERFACE_COUNTER_TX, thread_index, bif->sw_if_index, + frame->n_vectors, b0->current_length); + + vlib_buffer_free (vm, vlib_frame_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_SLAVE, + frame->n_vectors); + return frame->n_vectors; + } + + /* Number of buffers / pkts */ + n_left_from = frame->n_vectors; + + while (n_left_from >= 8) + { + // Prefetch next iteration + { + vlib_buffer_t *p4, *p5, *p6, *p7; + + p4 = vlib_get_buffer (vm, from[4]); + p5 = vlib_get_buffer (vm, from[5]); + p6 = vlib_get_buffer (vm, from[6]); + p7 = vlib_get_buffer (vm, from[7]); + + vlib_prefetch_buffer_header (p4, STORE); + vlib_prefetch_buffer_header (p5, STORE); + vlib_prefetch_buffer_header (p6, STORE); + vlib_prefetch_buffer_header (p7, STORE); + + CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, LOAD); + } + + bi0 = from[0]; + bi1 = from[1]; + bi2 = from[2]; + bi3 = from[3]; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + b2 = vlib_get_buffer (vm, bi2); + b3 = vlib_get_buffer (vm, bi3); + + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3); + + sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX]; + sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX]; + sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX]; + + port = + (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif, b0); + port1 = + (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif, b1); + port2 = + (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif, b2); + port3 = + (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif, b3); + + sif_if_index = *vec_elt_at_index (bif->active_slaves, port); + sif_if_index1 = *vec_elt_at_index (bif->active_slaves, port1); + sif_if_index2 = *vec_elt_at_index (bif->active_slaves, port2); + sif_if_index3 = *vec_elt_at_index (bif->active_slaves, port3); + + vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index; + vnet_buffer (b1)->sw_if_index[VLIB_TX] = sif_if_index1; + vnet_buffer (b2)->sw_if_index[VLIB_TX] = sif_if_index2; + vnet_buffer (b3)->sw_if_index[VLIB_TX] = sif_if_index3; + + f = vnet_get_frame_to_sw_interface (vnm, sif_if_index); + f1 = vnet_get_frame_to_sw_interface (vnm, sif_if_index1); + f2 = vnet_get_frame_to_sw_interface (vnm, sif_if_index2); + f3 = vnet_get_frame_to_sw_interface (vnm, sif_if_index3); + + to_next = vlib_frame_vector_args (f); + to_next1 = vlib_frame_vector_args (f1); + to_next2 = vlib_frame_vector_args (f2); + to_next3 = vlib_frame_vector_args (f3); + + to_next += f->n_vectors; + to_next1 += f1->n_vectors; + to_next2 += f2->n_vectors; + to_next3 += f3->n_vectors; + + to_next[0] = vlib_get_buffer_index (vm, b0); + to_next1[0] = vlib_get_buffer_index (vm, b1); + to_next2[0] = vlib_get_buffer_index (vm, b2); + to_next3[0] = vlib_get_buffer_index (vm, b3); + + f->n_vectors++; + f1->n_vectors++; + f2->n_vectors++; + f3->n_vectors++; + + vnet_put_frame_to_sw_interface (vnm, sif_if_index, f); + vnet_put_frame_to_sw_interface (vnm, sif_if_index1, f1); + vnet_put_frame_to_sw_interface (vnm, sif_if_index2, f2); + vnet_put_frame_to_sw_interface (vnm, sif_if_index3, f3); + + if (PREDICT_FALSE (n_trace > 0)) + { + vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ ); + vlib_set_trace_count (vm, node, --n_trace); + t0 = vlib_add_trace (vm, node, b0, sizeof (*t0)); + eth = (ethernet_header_t *) vlib_buffer_get_current (b0); + t0->ethernet = *eth; + t0->sw_if_index = sw_if_index; + t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + + if (PREDICT_TRUE (n_trace > 0)) + { + vlib_trace_buffer (vm, node, next1, b1, 0 /* follow_chain */ ); + vlib_set_trace_count (vm, node, --n_trace); + t0 = vlib_add_trace (vm, node, b1, sizeof (*t0)); + eth = (ethernet_header_t *) vlib_buffer_get_current (b1); + t0->ethernet = *eth; + t0->sw_if_index = sw_if_index1; + t0->bond_sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX]; + + if (PREDICT_TRUE (n_trace > 0)) + { + vlib_trace_buffer (vm, node, next2, b2, + 0 /* follow_chain */ ); + vlib_set_trace_count (vm, node, --n_trace); + t0 = vlib_add_trace (vm, node, b2, sizeof (*t0)); + eth = (ethernet_header_t *) vlib_buffer_get_current (b2); + t0->ethernet = *eth; + t0->sw_if_index = sw_if_index2; + t0->bond_sw_if_index = + vnet_buffer (b2)->sw_if_index[VLIB_TX]; + + if (PREDICT_TRUE (n_trace > 0)) + { + vlib_trace_buffer (vm, node, next3, b3, + 0 /* follow_chain */ ); + vlib_set_trace_count (vm, node, --n_trace); + t0 = vlib_add_trace (vm, node, b3, sizeof (*t0)); + eth = + (ethernet_header_t *) vlib_buffer_get_current (b3); + t0->ethernet = *eth; + t0->sw_if_index = sw_if_index3; + t0->bond_sw_if_index = + vnet_buffer (b3)->sw_if_index[VLIB_TX]; + } + } + } + } + + from += 4; + n_left_from -= 4; + } + + while (n_left_from > 0) + { + // Prefetch next iteration + if (n_left_from > 1) + { + vlib_buffer_t *p2; + + p2 = vlib_get_buffer (vm, from[1]); + vlib_prefetch_buffer_header (p2, STORE); + CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD); + } + + bi0 = from[0]; + b0 = vlib_get_buffer (vm, bi0); + + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + + sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + + port = + (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif, b0); + sif_if_index = *vec_elt_at_index (bif->active_slaves, port); + vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index; + f = vnet_get_frame_to_sw_interface (vnm, sif_if_index); + to_next = vlib_frame_vector_args (f); + to_next += f->n_vectors; + + to_next[0] = vlib_get_buffer_index (vm, b0); + f->n_vectors++; + vnet_put_frame_to_sw_interface (vnm, sif_if_index, f); + + if (PREDICT_FALSE (n_trace > 0)) + { + vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ ); + vlib_set_trace_count (vm, node, --n_trace); + t0 = vlib_add_trace (vm, node, b0, sizeof (*t0)); + eth = (ethernet_header_t *) vlib_buffer_get_current (b0); + t0->ethernet = *eth; + t0->sw_if_index = sw_if_index; + t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + } + + from += 1; + n_left_from -= 1; + } + + vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters + + VNET_INTERFACE_COUNTER_TX, thread_index, + bif->sw_if_index, frame->n_vectors); + + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VNET_DEVICE_CLASS (bond_dev_class) = { + .name = "bond", + .tx_function = bond_tx_fn, + .tx_function_n_errors = BOND_TX_N_ERROR, + .tx_function_error_strings = bond_tx_error_strings, + .format_device_name = format_bond_interface_name, + .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, +}; + +VLIB_DEVICE_TX_FUNCTION_MULTIARCH (bond_dev_class, bond_tx_fn) +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |