diff options
Diffstat (limited to 'vnet/vnet/l2/l2_input.c')
| -rw-r--r-- | vnet/vnet/l2/l2_input.c | 1116 |
1 files changed, 0 insertions, 1116 deletions
diff --git a/vnet/vnet/l2/l2_input.c b/vnet/vnet/l2/l2_input.c deleted file mode 100644 index a104ec9eebb..00000000000 --- a/vnet/vnet/l2/l2_input.c +++ /dev/null @@ -1,1116 +0,0 @@ -/* - * l2_input.c : layer 2 input packet processing - * - * Copyright (c) 2013 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. - */ - -#include <vlib/vlib.h> -#include <vnet/vnet.h> -#include <vnet/pg/pg.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ethernet/packet.h> -#include <vnet/ip/ip_packet.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vlib/cli.h> -#include <vnet/l2/l2_input.h> -#include <vnet/l2/l2_output.h> -#include <vnet/l2/feat_bitmap.h> -#include <vnet/l2/l2_bvi.h> -#include <vnet/l2/l2_fib.h> - -#include <vppinfra/error.h> -#include <vppinfra/hash.h> -#include <vppinfra/cache.h> - -/** - * @file - * @brief Interface Input Mode (Layer 2 Cross-Connect or Bridge / Layer 3). - * - * This file contains the CLI Commands that modify the input mode of an - * interface. For interfaces in a Layer 2 cross-connect, all packets - * received on one interface will be transmitted to the other. For - * interfaces in a bridge-domain, packets will be forwarded to other - * interfaces in the same bridge-domain based on destination mac address. - * For interfaces in Layer 3 mode, the packets will be routed. - */ - -/* Feature graph node names */ -static char *l2input_feat_names[] = { -#define _(sym,name) name, - foreach_l2input_feat -#undef _ -}; - -char ** -l2input_get_feat_names (void) -{ - return l2input_feat_names; -} - - -typedef struct -{ - /* per-pkt trace data */ - u8 src[6]; - u8 dst[6]; - u32 next_index; - u32 sw_if_index; -} l2input_trace_t; - -/* packet trace format function */ -static u8 * -format_l2input_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 *); - l2input_trace_t *t = va_arg (*args, l2input_trace_t *); - - s = format (s, "l2-input: sw_if_index %d dst %U src %U", - t->sw_if_index, - format_ethernet_address, t->dst, - format_ethernet_address, t->src); - return s; -} - -l2input_main_t l2input_main; - -#define foreach_l2input_error \ -_(L2INPUT, "L2 input packets") \ -_(DROP, "L2 input drops") - -typedef enum -{ -#define _(sym,str) L2INPUT_ERROR_##sym, - foreach_l2input_error -#undef _ - L2INPUT_N_ERROR, -} l2input_error_t; - -static char *l2input_error_strings[] = { -#define _(sym,string) string, - foreach_l2input_error -#undef _ -}; - -typedef enum -{ /* */ - L2INPUT_NEXT_LEARN, - L2INPUT_NEXT_FWD, - L2INPUT_NEXT_DROP, - L2INPUT_N_NEXT, -} l2input_next_t; - - -static_always_inline void -classify_and_dispatch (vlib_main_t * vm, - vlib_node_runtime_t * node, - u32 cpu_index, - l2input_main_t * msm, vlib_buffer_t * b0, u32 * next0) -{ - /* - * Load L2 input feature struct - * Load bridge domain struct - * Parse ethernet header to determine unicast/mcast/broadcast - * take L2 input stat - * classify packet as IP/UDP/TCP, control, other - * mask feature bitmap - * go to first node in bitmap - * Later: optimize VTM - * - * For L2XC, - * set tx sw-if-handle - */ - - u16 ethertype; - u8 protocol; - l2_input_config_t *config; - l2_bridge_domain_t *bd_config; - u16 bd_index0; - u32 feature_bitmap; - u32 feat_mask; - ethernet_header_t *h0; - u8 *l3h0; - u32 sw_if_index0; - -#define get_u16(addr) ( *((u16 *)(addr)) ) - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - h0 = vlib_buffer_get_current (b0); - l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len; - - ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2)); - feat_mask = ~0; - - /* Get config for the input interface */ - config = vec_elt_at_index (msm->configs, sw_if_index0); - - /* Save split horizon group */ - vnet_buffer (b0)->l2.shg = config->shg; - - /* determine layer2 kind for stat and mask */ - if (PREDICT_FALSE (ethernet_address_cast (h0->dst_address))) - { - protocol = ((ip6_header_t *) l3h0)->protocol; - - /* Disable bridge forwarding (flooding will execute instead if not xconnect) */ - feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD); - - /* Disable ARP-term for non-ARP and non-ICMP6 packet */ - if (ethertype != ETHERNET_TYPE_ARP && - (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6)) - feat_mask &= ~(L2INPUT_FEAT_ARP_TERM); - } - else - { - /* - * Check for from-BVI processing - set SHG of unicast packets from BVI - * to 0 so it is not dropped for VXLAN tunnels or other ports with the - * same SHG as that of the BVI. - */ - if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] == - L2INPUT_BVI)) - vnet_buffer (b0)->l2.shg = 0; - } - - - if (config->xconnect) - { - /* Set the output interface */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index; - } - else - { - /* Do bridge-domain processing */ - bd_index0 = config->bd_index; - /* save BD ID for next feature graph nodes */ - vnet_buffer (b0)->l2.bd_index = bd_index0; - - /* Get config for the bridge domain interface */ - bd_config = vec_elt_at_index (msm->bd_configs, bd_index0); - - /* - * Process bridge domain feature enables. - * To perform learning/flooding/forwarding, the corresponding bit - * must be enabled in both the input interface config and in the - * bridge domain config. In the bd_bitmap, bits for features other - * than learning/flooding/forwarding should always be set. - */ - feat_mask = feat_mask & bd_config->feature_bitmap; - } - - /* mask out features from bitmap using packet type and bd config */ - feature_bitmap = config->feature_bitmap & feat_mask; - - /* save for next feature graph nodes */ - vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap; - - /* Determine the next node */ - *next0 = feat_bitmap_get_next_node_index (msm->feat_next_node_index, - feature_bitmap); -} - - -static uword -l2input_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - l2input_next_t next_index; - l2input_main_t *msm = &l2input_main; - u32 cpu_index = os_get_cpu_number (); - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; /* number of packets to process */ - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - u32 n_left_to_next; - - /* get space to enqueue frame to graph node "next_index" */ - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from >= 8 && n_left_to_next >= 4) - { - u32 bi0, bi1, bi2, bi3; - vlib_buffer_t *b0, *b1, *b2, *b3; - u32 next0, next1, next2, next3; - u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3; - - /* 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]); - - /* Prefetch the buffer header and packet for the N+2 loop iteration */ - vlib_prefetch_buffer_header (p4, LOAD); - vlib_prefetch_buffer_header (p5, LOAD); - vlib_prefetch_buffer_header (p6, LOAD); - vlib_prefetch_buffer_header (p7, LOAD); - - CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); - - /* - * Don't bother prefetching the bridge-domain config (which - * depends on the input config above). Only a small number of - * bridge domains are expected. Plus the structure is small - * and several fit in a cache line. - */ - } - - /* speculatively enqueue b0 and b1 to the current next frame */ - /* bi is "buffer index", b is pointer to the buffer */ - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - to_next[2] = bi2 = from[2]; - to_next[3] = bi3 = from[3]; - from += 4; - to_next += 4; - n_left_from -= 4; - n_left_to_next -= 4; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - b2 = vlib_get_buffer (vm, bi2); - b3 = vlib_get_buffer (vm, bi3); - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - /* RX interface handles */ - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX]; - sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX]; - - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - ethernet_header_t *h0 = vlib_buffer_get_current (b0); - l2input_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - ethernet_header_t *h1 = vlib_buffer_get_current (b1); - l2input_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->sw_if_index = sw_if_index1; - clib_memcpy (t->src, h1->src_address, 6); - clib_memcpy (t->dst, h1->dst_address, 6); - } - if (b2->flags & VLIB_BUFFER_IS_TRACED) - { - ethernet_header_t *h2 = vlib_buffer_get_current (b2); - l2input_trace_t *t = - vlib_add_trace (vm, node, b2, sizeof (*t)); - t->sw_if_index = sw_if_index2; - clib_memcpy (t->src, h2->src_address, 6); - clib_memcpy (t->dst, h2->dst_address, 6); - } - if (b3->flags & VLIB_BUFFER_IS_TRACED) - { - ethernet_header_t *h3 = vlib_buffer_get_current (b3); - l2input_trace_t *t = - vlib_add_trace (vm, node, b3, sizeof (*t)); - t->sw_if_index = sw_if_index3; - clib_memcpy (t->src, h3->src_address, 6); - clib_memcpy (t->dst, h3->dst_address, 6); - } - } - - vlib_node_increment_counter (vm, l2input_node.index, - L2INPUT_ERROR_L2INPUT, 4); - - classify_and_dispatch (vm, node, cpu_index, msm, b0, &next0); - classify_and_dispatch (vm, node, cpu_index, msm, b1, &next1); - classify_and_dispatch (vm, node, cpu_index, msm, b2, &next2); - classify_and_dispatch (vm, node, cpu_index, msm, b3, &next3); - - /* verify speculative enqueues, maybe switch current next frame */ - /* if next0==next1==next_index then nothing special needs to be done */ - vlib_validate_buffer_enqueue_x4 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, bi2, bi3, - next0, next1, next2, next3); - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - u32 next0; - u32 sw_if_index0; - - /* speculatively enqueue b0 to the current next frame */ - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - ethernet_header_t *h0 = vlib_buffer_get_current (b0); - l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - t->sw_if_index = sw_if_index0; - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - } - - vlib_node_increment_counter (vm, l2input_node.index, - L2INPUT_ERROR_L2INPUT, 1); - - classify_and_dispatch (vm, node, cpu_index, msm, b0, &next0); - - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (l2input_node) = { - .function = l2input_node_fn, - .name = "l2-input", - .vector_size = sizeof (u32), - .format_trace = format_l2input_trace, - .format_buffer = format_ethernet_header_with_length, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(l2input_error_strings), - .error_strings = l2input_error_strings, - - .n_next_nodes = L2INPUT_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [L2INPUT_NEXT_LEARN] = "l2-learn", - [L2INPUT_NEXT_FWD] = "l2-fwd", - [L2INPUT_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -VLIB_NODE_FUNCTION_MULTIARCH (l2input_node, l2input_node_fn) - clib_error_t *l2input_init (vlib_main_t * vm) -{ - l2input_main_t *mp = &l2input_main; - - mp->vlib_main = vm; - mp->vnet_main = vnet_get_main (); - - /* Get packets RX'd from L2 interfaces */ - ethernet_register_l2_input (vm, l2input_node.index); - - /* Create the config vector */ - vec_validate (mp->configs, 100); - /* create 100 sw interface entries and zero them */ - - /* Initialize the feature next-node indexes */ - feat_bitmap_init_next_nodes (vm, - l2input_node.index, - L2INPUT_N_FEAT, - l2input_get_feat_names (), - mp->feat_next_node_index); - - return 0; -} - -VLIB_INIT_FUNCTION (l2input_init); - - -/** Get a pointer to the config for the given interface. */ -l2_input_config_t * -l2input_intf_config (u32 sw_if_index) -{ - l2input_main_t *mp = &l2input_main; - - vec_validate (mp->configs, sw_if_index); - return vec_elt_at_index (mp->configs, sw_if_index); -} - -/** Enable (or disable) the feature in the bitmap for the given interface. */ -u32 -l2input_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable) -{ - l2input_main_t *mp = &l2input_main; - l2_input_config_t *config; - - vec_validate (mp->configs, sw_if_index); - config = vec_elt_at_index (mp->configs, sw_if_index); - - if (enable) - { - config->feature_bitmap |= feature_bitmap; - } - else - { - config->feature_bitmap &= ~feature_bitmap; - } - - return config->feature_bitmap; -} - -u32 -l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value) -{ - l2_bridge_domain_t *bd_config; - vec_validate (l2input_main.bd_configs, bd_index); - bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index); - bd_validate (bd_config); - bd_config->feature_bitmap = - (bd_config->feature_bitmap & ~feat_mask) | feat_value; - return bd_config->feature_bitmap; -} - -/** - * Set the subinterface to run in l2 or l3 mode. - * For L3 mode, just the sw_if_index is specified. - * For bridged mode, the bd id and bvi flag are also specified. - * For xconnect mode, the peer sw_if_index is also specified. - * Return 0 if ok, or non-0 if there was an error. - */ - -u32 -set_int_l2_mode (vlib_main_t * vm, vnet_main_t * vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, /* for bridged interface */ - u32 bvi, /* the bridged interface is the BVI */ - u32 shg, /* the bridged interface's split horizon group */ - u32 xc_sw_if_index) /* peer interface for xconnect */ -{ - l2input_main_t *mp = &l2input_main; - l2output_main_t *l2om = &l2output_main; - vnet_main_t *vnm = vnet_get_main (); - vnet_hw_interface_t *hi; - l2_output_config_t *out_config; - l2_input_config_t *config; - l2_bridge_domain_t *bd_config; - l2_flood_member_t member; - u64 mac; - i32 l2_if_adjust = 0; - u32 slot; - - hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index); - config = l2input_intf_config (sw_if_index); - - if (config->bridge) - { - /* Interface is already in bridge mode. Undo the existing config. */ - bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index); - - /* remove interface from flood vector */ - bd_remove_member (bd_config, sw_if_index); - - /* undo any BVI-related config */ - if (bd_config->bvi_sw_if_index == sw_if_index) - { - bd_config->bvi_sw_if_index = ~0; - config->bvi = 0; - - /* delete the l2fib entry for the bvi interface */ - mac = *((u64 *) hi->hw_address); - l2fib_del_entry (mac, config->bd_index); - - /* Make loop output node send packet back to ethernet-input node */ - slot = - vlib_node_add_named_next_with_slot (vm, hi->tx_node_index, - "ethernet-input", - VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); - ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); - } - l2_if_adjust--; - } - else if (config->xconnect) - { - l2_if_adjust--; - } - - /* - * Directs the l2 output path to work out the interface - * output next-arc itself. Needed when recycling a sw_if_index. - */ - vec_validate_init_empty (l2om->next_nodes.output_node_index_vec, - sw_if_index, ~0); - l2om->next_nodes.output_node_index_vec[sw_if_index] = ~0; - - /* Initialize the l2-input configuration for the interface */ - if (mode == MODE_L3) - { - /* Set L2 config to BD index 0 so that if any packet accidentally - * came in on L2 path, it will be dropped in BD 0 */ - config->xconnect = 0; - config->bridge = 0; - config->shg = 0; - config->bd_index = 0; - config->feature_bitmap = L2INPUT_FEAT_DROP; - - /* Make sure any L2-output packet to this interface now in L3 mode is - * dropped. This may happen if L2 FIB MAC entry is stale */ - l2om->next_nodes.output_node_index_vec[sw_if_index] = - L2OUTPUT_NEXT_BAD_INTF; - } - else if (mode == MODE_L2_CLASSIFY) - { - config->xconnect = 1; - config->bridge = 0; - config->output_sw_if_index = xc_sw_if_index; - - /* Make sure last-chance drop is configured */ - config->feature_bitmap |= - L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY; - - /* Make sure bridging features are disabled */ - config->feature_bitmap &= - ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD); - shg = 0; /* not used in xconnect */ - - /* Insure all packets go to ethernet-input */ - ethernet_set_rx_redirect (vnet_main, hi, 1); - } - else - { - - if (mode == MODE_L2_BRIDGE) - { - /* - * Remove a check that the interface must be an Ethernet. - * Specifically so we can bridge to L3 tunnel interfaces. - * Here's the check: - * if (hi->hw_class_index != ethernet_hw_interface_class.index) - * - */ - if (!hi) - return MODE_ERROR_ETH; /* non-ethernet */ - - config->xconnect = 0; - config->bridge = 1; - config->bd_index = bd_index; - - /* - * Enable forwarding, flooding, learning and ARP termination by default - * (note that ARP term is disabled on BD feature bitmap by default) - */ - config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD | - L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM; - - /* Make sure last-chance drop is configured */ - config->feature_bitmap |= L2INPUT_FEAT_DROP; - - /* Make sure xconnect is disabled */ - config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT; - - /* Set up bridge domain */ - vec_validate (mp->bd_configs, bd_index); - bd_config = vec_elt_at_index (mp->bd_configs, bd_index); - bd_validate (bd_config); - - /* TODO: think: add l2fib entry even for non-bvi interface? */ - - /* Do BVI interface initializations */ - if (bvi) - { - /* ensure BD has no bvi interface (or replace that one with this??) */ - if (bd_config->bvi_sw_if_index != ~0) - { - return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */ - } - bd_config->bvi_sw_if_index = sw_if_index; - config->bvi = 1; - - /* create the l2fib entry for the bvi interface */ - mac = *((u64 *) hi->hw_address); - l2fib_add_entry (mac, bd_index, sw_if_index, 1, 0, 1); /* static + bvi */ - - /* Disable learning by default. no use since l2fib entry is static. */ - config->feature_bitmap &= ~L2INPUT_FEAT_LEARN; - - /* Make loop output node send packet to l2-input node */ - slot = - vlib_node_add_named_next_with_slot (vm, hi->tx_node_index, - "l2-input", - VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); - ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); - } - - /* Add interface to bridge-domain flood vector */ - member.sw_if_index = sw_if_index; - member.flags = bvi ? L2_FLOOD_MEMBER_BVI : L2_FLOOD_MEMBER_NORMAL; - member.shg = shg; - bd_add_member (bd_config, &member); - - } - else - { - config->xconnect = 1; - config->bridge = 0; - config->output_sw_if_index = xc_sw_if_index; - - /* Make sure last-chance drop is configured */ - config->feature_bitmap |= L2INPUT_FEAT_DROP; - - /* Make sure bridging features are disabled */ - config->feature_bitmap &= - ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD); - - config->feature_bitmap |= L2INPUT_FEAT_XCONNECT; - shg = 0; /* not used in xconnect */ - } - - /* set up split-horizon group */ - config->shg = shg; - out_config = l2output_intf_config (sw_if_index); - out_config->shg = shg; - - /* - * Test: remove this when non-IP features can be configured. - * Enable a non-IP feature to test IP feature masking - * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT; - */ - - l2_if_adjust++; - } - - /* Adjust count of L2 interfaces */ - hi->l2_if_count += l2_if_adjust; - - if (hi->hw_class_index == ethernet_hw_interface_class.index) - { - if ((hi->l2_if_count == 1) && (l2_if_adjust == 1)) - { - /* Just added first L2 interface on this port */ - - /* Set promiscuous mode on the l2 interface */ - ethernet_set_flags (vnet_main, hi->hw_if_index, - ETHERNET_INTERFACE_FLAG_ACCEPT_ALL); - - /* ensure all packets go to ethernet-input */ - ethernet_set_rx_redirect (vnet_main, hi, 1); - - } - else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1)) - { - /* Just removed only L2 subinterface on this port */ - - /* Disable promiscuous mode on the l2 interface */ - ethernet_set_flags (vnet_main, hi->hw_if_index, 0); - - /* Allow ip packets to go directly to ip4-input etc */ - ethernet_set_rx_redirect (vnet_main, hi, 0); - } - } - - /* Set up the L2/L3 flag in the interface parsing tables */ - ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3)); - - return 0; -} - -/** - * Set subinterface in bridging mode with a bridge-domain ID. - * The CLI format is: - * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group] - */ -static clib_error_t * -int_l2_bridge (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *error = 0; - u32 bd_index, bd_id; - u32 sw_if_index; - u32 bvi; - u32 rc; - u32 shg; - - if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - error = clib_error_return (0, "unknown interface `%U'", - format_unformat_error, input); - goto done; - } - - if (!unformat (input, "%d", &bd_id)) - { - error = clib_error_return (0, "expected bridge domain ID `%U'", - format_unformat_error, input); - goto done; - } - - bd_index = bd_find_or_add_bd_index (&bd_main, bd_id); - - /* optional bvi */ - bvi = unformat (input, "bvi"); - - /* optional split horizon group */ - shg = 0; - (void) unformat (input, "%d", &shg); - - /* set the interface mode */ - if ((rc = - set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi, - shg, 0))) - { - if (rc == MODE_ERROR_ETH) - { - error = clib_error_return (0, "bridged interface must be ethernet", - format_unformat_error, input); - } - else if (rc == MODE_ERROR_BVI_DEF) - { - error = - clib_error_return (0, "bridge-domain already has a bvi interface", - format_unformat_error, input); - } - else - { - error = clib_error_return (0, "invalid configuration for interface", - format_unformat_error, input); - } - goto done; - } - -done: - return error; -} - -/*? - * Use this command put an interface into Layer 2 bridge domain. If a - * bridge-domain with the provided bridge-domain-id does not exist, it - * will be created. Interfaces in a bridge-domain forward packets to - * other interfaces in the same bridge-domain based on destination mac - * address. To remove an interface from a the Layer 2 bridge domain, - * put the interface in a different mode, for example Layer 3 mode. - * - * Optionally, an interface can be added to a Layer 2 bridge-domain as - * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2 - * bridge-domain can be a bvi. - * - * Optionally, a split-horizon group can also be specified. This defaults - * to 0 if not specified. - * - * @cliexpar - * Example of how to configure a Layer 2 bridge-domain with three - * interfaces (where 200 is the bridge-domain-id): - * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200} - * This interface is added a BVI interface: - * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi} - * This interface also has a split-horizon group of 1 specified: - * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1} - * Example of how to remove an interface from a Layer2 bridge-domain: - * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200} -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = { - .path = "set interface l2 bridge", - .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi] [shg]", - .function = int_l2_bridge, -}; -/* *INDENT-ON* */ - -/** - * Set subinterface in xconnect mode with another interface. - * The CLI format is: - * set interface l2 xconnect <interface> <peer interface> - */ -static clib_error_t * -int_l2_xc (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *error = 0; - u32 sw_if_index; - u32 xc_sw_if_index; - - if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - error = clib_error_return (0, "unknown interface `%U'", - format_unformat_error, input); - goto done; - } - - if (!unformat_user - (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index)) - { - error = clib_error_return (0, "unknown peer interface `%U'", - format_unformat_error, input); - goto done; - } - - /* set the interface mode */ - if (set_int_l2_mode - (vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index)) - { - error = clib_error_return (0, "invalid configuration for interface", - format_unformat_error, input); - goto done; - } - -done: - return error; -} - -/*? - * Use this command put an interface into Layer 2 cross-connect mode. - * Both interfaces must be in this mode for bi-directioal traffic. All - * packets received on one interface will be transmitted to the other. - * To remove the Layer 2 cross-connect, put the interface in a different - * mode, for example Layer 3 mode. - * - * @cliexpar - * Example of how to configure a Layer2 cross-connect between two interfaces: - * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300} - * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300} - * Example of how to remove a Layer2 cross-connect: - * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300} - * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300} -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (int_l2_xc_cli, static) = { - .path = "set interface l2 xconnect", - .short_help = "set interface l2 xconnect <interface> <peer interface>", - .function = int_l2_xc, -}; -/* *INDENT-ON* */ - -/** - * Set subinterface in L3 mode. - * The CLI format is: - * set interface l3 <interface> - */ -static clib_error_t * -int_l3 (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *error = 0; - u32 sw_if_index; - - if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - error = clib_error_return (0, "unknown interface `%U'", - format_unformat_error, input); - goto done; - } - - /* set the interface mode */ - if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0)) - { - error = clib_error_return (0, "invalid configuration for interface", - format_unformat_error, input); - goto done; - } - -done: - return error; -} - -/*? - * Modify the packet processing mode of the interface to Layer 3, which - * implies packets will be routed. This is the default mode of an interface. - * Use this command to remove an interface from a Layer 2 cross-connect or a - * Layer 2 bridge. - * - * @cliexpar - * Example of how to set the mode of an interface to Layer 3: - * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200} -?*/ -/* *INDENT-OFF* */ - VLIB_CLI_COMMAND (int_l3_cli, static) = { - .path = "set interface l3", - .short_help = "set interface l3 <interface>", - .function = int_l3, -}; -/* *INDENT-ON* */ - -/** - * Show interface mode. - * The CLI format is: - * show mode [<if-name1> <if-name2> ...] - */ -static clib_error_t * -show_int_mode (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *error = 0; - char *mode; - u8 *args; - vnet_interface_main_t *im = &vnm->interface_main; - vnet_sw_interface_t *si, *sis = 0; - l2input_main_t *mp = &l2input_main; - l2_input_config_t *config; - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - u32 sw_if_index; - - /* See if user wants to show specific interface */ - if (unformat - (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - si = pool_elt_at_index (im->sw_interfaces, sw_if_index); - vec_add1 (sis, si[0]); - } - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - goto done; - } - - } - - if (vec_len (sis) == 0) /* Get all interfaces */ - { - /* Gather interfaces. */ - sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces)); - _vec_len (sis) = 0; - /* *INDENT-OFF* */ - pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); })); - /* *INDENT-ON* */ - } - - vec_foreach (si, sis) - { - vec_validate (mp->configs, si->sw_if_index); - config = vec_elt_at_index (mp->configs, si->sw_if_index); - if (config->bridge) - { - u32 bd_id; - mode = "l2 bridge"; - bd_id = l2input_main.bd_configs[config->bd_index].bd_id; - - args = format (0, "bd_id %d%s%d", bd_id, - config->bvi ? " bvi shg " : " shg ", config->shg); - } - else if (config->xconnect) - { - mode = "l2 xconnect"; - args = format (0, "%U", - format_vnet_sw_if_index_name, - vnm, config->output_sw_if_index); - } - else - { - mode = "l3"; - args = format (0, " "); - } - vlib_cli_output (vm, "%s %U %v\n", - mode, - format_vnet_sw_if_index_name, - vnm, si->sw_if_index, args); - vec_free (args); - } - -done: - vec_free (sis); - - return error; -} - -/*? - * Show the packet processing mode (Layer2 xcross-onnect, Layer 2 bridge, - * Layer 3 routed) of all interfaces and sub-interfaces, or limit the - * output to just the provided list of interfaces and sub-interfaces. - * The output shows the mode, the interface, and if the interface is - * a member of a bridge, the bridge-domain-id and the split horizen group (shg). - * - * @cliexpar - * Example of displaying the mode of all interfaces: - * @cliexstart{show mode} - * l3 local0 - * l3 GigabitEthernet0/8/0 - * l3 GigabitEthernet0/9/0 - * l3 GigabitEthernet0/a/0 - * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0 - * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0 - * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0 - * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300 - * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300 - * @cliexend - * Example of displaying the mode of a seleted list of interfaces: - * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200} - * l3 GigabitEthernet0/8/0 - * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0 - * @cliexend -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_l2_mode, static) = { - .path = "show mode", - .short_help = "show mode [<if-name1> <if-name2> ...]", - .function = show_int_mode, -}; -/* *INDENT-ON* */ - -#define foreach_l2_init_function \ -_(feat_bitmap_drop_init) \ -_(l2fib_init) \ -_(l2_input_classify_init) \ -_(l2bd_init) \ -_(l2fwd_init) \ -_(l2_inacl_init) \ -_(l2input_init) \ -_(l2_vtr_init) \ -_(l2_invtr_init) \ -_(l2_efp_filter_init) \ -_(l2learn_init) \ -_(l2flood_init) \ -_(l2_outacl_init) \ -_(l2output_init) \ -_(l2_patch_init) \ -_(l2_xcrw_init) - -clib_error_t * -l2_init (vlib_main_t * vm) -{ - clib_error_t *error; - -#define _(a) do { \ - if ((error = vlib_call_init_function (vm, a))) return error; } \ -while (0); - foreach_l2_init_function; -#undef _ - return 0; -} - -VLIB_INIT_FUNCTION (l2_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |