srv6-mobile - vpp - Vector Packet Processing

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author	Tetsuya Murakami <tetsuya.mrk@gmail.com>	2019-12-04 18:57:46 -0800
committer	Ole Trøan <otroan@employees.org>	2019-12-05 15:11:03 +0000
commit	70d8ef89a5d9e38d4f35517c0f64009c47b76c4d (patch)
tree	4dbd294a57d34dd82d755ae465847f5ede7244d7 /src/plugins/srv6-mobile/extra
parent	66cea092c7a584bb7b82000fbfad349e6f0af7e1 (diff)

srv6-mobile

Type: feature Plug-in for IPv6 Segment Routing Mobile Support the plug-in function in SR Policy. Support GTP4.D plug-in as SR Policy plug-in. Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com> Change-Id: I306160b7203921d879940193868944158867c482

Diffstat (limited to 'src/plugins/srv6-mobile/extra')

-rwxr-xr-x

src/plugins/srv6-mobile/extra/runner.py

1 files changed, 24 insertions, 29 deletions

/* * Copyright (c) 2015 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. */ /* *------------------------------------------------------------------ * ad.c - SRv6 Dynamic Proxy (AD) function *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vnet/adj/adj.h> #include <vnet/plugin/plugin.h> #include <vpp/app/version.h> #include <srv6-ad/ad.h> #define SID_CREATE_IFACE_FEATURE_ERROR -1 #define SID_CREATE_INVALID_IFACE_TYPE -3 #define SID_CREATE_INVALID_IFACE_INDEX -4 #define SID_CREATE_INVALID_ADJ_INDEX -5 unsigned char function_name[] = "SRv6-AD-plugin"; unsigned char keyword_str[] = "End.AD"; unsigned char def_str[] = "Endpoint with dynamic proxy to SR-unaware appliance"; unsigned char params_str[] = "nh <next-hop> oif <iface-out> iif <iface-in>"; srv6_ad_main_t srv6_ad_main; /*****************************************/ /* SRv6 LocalSID instantiation and removal functions */ static int srv6_ad_localsid_creation_fn (ip6_sr_localsid_t * localsid) { ip6_sr_main_t *srm = &sr_main; srv6_ad_main_t *sm = &srv6_ad_main; srv6_ad_localsid_t *ls_mem = localsid->plugin_mem; u32 localsid_index = localsid - srm->localsids; /* Step 1: Prepare xconnect adjacency for sending packets to the VNF */ /* Retrieve the adjacency corresponding to the (OIF, next_hop) */ adj_index_t nh_adj_index = ADJ_INDEX_INVALID; if (ls_mem->inner_type != AD_TYPE_L2) { if (ls_mem->inner_type == AD_TYPE_IP4) nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4, &ls_mem->nh_addr, ls_mem->sw_if_index_out); else if (ls_mem->inner_type == AD_TYPE_IP6) nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6, &ls_mem->nh_addr, ls_mem->sw_if_index_out); if (nh_adj_index == ADJ_INDEX_INVALID) { clib_mem_free (ls_mem); return SID_CREATE_INVALID_ADJ_INDEX; } } ls_mem->nh_adj = nh_adj_index; /* Step 2: Prepare inbound policy for packets returning from the VNF */ /* Sanitise the SW_IF_INDEX */ if (pool_is_free_index (sm->vnet_main->interface_main.sw_interfaces, ls_mem->sw_if_index_in)) { adj_unlock (ls_mem->nh_adj); clib_mem_free (ls_mem); return SID_CREATE_INVALID_IFACE_INDEX; } vnet_sw_interface_t *sw = vnet_get_sw_interface (sm->vnet_main, ls_mem->sw_if_index_in); if (sw->type != VNET_SW_INTERFACE_TYPE_HARDWARE) { adj_unlock (ls_mem->nh_adj); clib_mem_free (ls_mem); return SID_CREATE_INVALID_IFACE_TYPE; } if (ls_mem->inner_type == AD_TYPE_L2) { /* Enable End.AD2 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("device-input", "srv6-ad2-rewrite", ls_mem->sw_if_index_in, 1, 0, 0); if (ret != 0) { clib_mem_free (ls_mem); return SID_CREATE_IFACE_FEATURE_ERROR; } /* Set interface in promiscuous mode */ vnet_main_t *vnm = vnet_get_main (); vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, ls_mem->sw_if_index_in); /* Make sure it is main interface */ if (hi->sw_if_index == ls_mem->sw_if_index_in) ethernet_set_flags (vnm, hi->hw_if_index, ETHERNET_INTERFACE_FLAG_ACCEPT_ALL); /* Associate local SID index to this interface (resize vector if needed) */ if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid2)) { vec_resize (sm->sw_iface_localsid2, (pool_len (sm->vnet_main->interface_main.sw_interfaces) - vec_len (sm->sw_iface_localsid2))); } sm->sw_iface_localsid2[ls_mem->sw_if_index_in] = localsid_index; } else if (ls_mem->inner_type == AD_TYPE_IP4) { /* Enable End.AD4 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("ip4-unicast", "srv6-ad4-rewrite", ls_mem->sw_if_index_in, 1, 0, 0); if (ret != 0) { adj_unlock (ls_mem->nh_adj); clib_mem_free (ls_mem); return SID_CREATE_IFACE_FEATURE_ERROR; } /* Associate local SID index to this interface (resize vector if needed) */ if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid4)) { vec_resize (sm->sw_iface_localsid4, (pool_len (sm->vnet_main->interface_main.sw_interfaces) - vec_len (sm->sw_iface_localsid4))); } sm->sw_iface_localsid4[ls_mem->sw_if_index_in] = localsid_index; } else if (ls_mem->inner_type == AD_TYPE_IP6) { /* Enable End.AD6 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("ip6-unicast", "srv6-ad6-rewrite", ls_mem->sw_if_index_in, 1, 0, 0); if (ret != 0) { adj_unlock (ls_mem->nh_adj); clib_mem_free (ls_mem); return SID_CREATE_IFACE_FEATURE_ERROR; } /* Associate local SID index to this interface (resize vector if needed) */ if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid6)) { vec_resize (sm->sw_iface_localsid6, (pool_len (sm->vnet_main->interface_main.sw_interfaces) - vec_len (sm->sw_iface_localsid6))); } sm->sw_iface_localsid6[ls_mem->sw_if_index_in] = localsid_index; } ls_mem->rw_len = 0; /* Step 3: Initialize rewrite counters */ srv6_ad_localsid_t **ls_p; pool_get (sm->sids, ls_p); *ls_p = ls_mem; ls_mem->index = ls_p - sm->sids; vlib_validate_combined_counter (&(sm->valid_counters), ls_mem->index); vlib_validate_combined_counter (&(sm->invalid_counters), ls_mem->index); vlib_zero_combined_counter (&(sm->valid_counters), ls_mem->index); vlib_zero_combined_counter (&(sm->invalid_counters), ls_mem->index); return 0; } static int srv6_ad_localsid_removal_fn (ip6_sr_localsid_t * localsid) { srv6_ad_main_t *sm = &srv6_ad_main; srv6_ad_localsid_t *ls_mem = localsid->plugin_mem; if (ls_mem->inner_type == AD_TYPE_L2) { /* Disable End.AD2 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("device-input", "srv6-ad2-rewrite", ls_mem->sw_if_index_in, 0, 0, 0); if (ret != 0) return -1; /* Disable promiscuous mode on the interface */ vnet_main_t *vnm = vnet_get_main (); vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, ls_mem->sw_if_index_in); /* Make sure it is main interface */ if (hi->sw_if_index == ls_mem->sw_if_index_in) ethernet_set_flags (vnm, hi->hw_if_index, 0); /* Remove local SID index from interface table */ sm->sw_iface_localsid2[ls_mem->sw_if_index_in] = ~(u32) 0; } else if (ls_mem->inner_type == AD_TYPE_IP4) { /* Disable End.AD4 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("ip4-unicast", "srv6-ad4-rewrite", ls_mem->sw_if_index_in, 0, 0, 0); if (ret != 0) return -1; /* Remove local SID pointer from interface table */ sm->sw_iface_localsid4[ls_mem->sw_if_index_in] = ~(u32) 0; } else if (ls_mem->inner_type == AD_TYPE_IP6) { /* Disable End.AD6 rewrite node for this interface */ int ret = vnet_feature_enable_disable ("ip6-unicast", "srv6-ad6-rewrite", ls_mem->sw_if_index_in, 0, 0, 0); if (ret != 0) return -1; /* Remove local SID pointer from interface table */ sm->sw_iface_localsid6[ls_mem->sw_if_index_in] = ~(u32) 0; } /* Unlock (OIF, NHOP) adjacency */ adj_unlock (ls_mem->nh_adj); /* Delete SID entry */ pool_put (sm->sids, pool_elt_at_index (sm->sids, ls_mem->index)); /* Clean up local SID memory */ vec_free (ls_mem->rewrite); clib_mem_free (localsid->plugin_mem); return 0; } /**********************************/ /* SRv6 LocalSID format functions */ /* * Prints nicely the parameters of a localsid * Example: print "Table 5" */ u8 * format_srv6_ad_localsid (u8 * s, va_list * args) { srv6_ad_localsid_t *ls_mem = va_arg (*args, void *); vnet_main_t *vnm = vnet_get_main (); srv6_ad_main_t *sm = &srv6_ad_main; if (ls_mem->inner_type == AD_TYPE_IP4) { s = format (s, "Next-hop:\t%U\n\t", format_ip4_address, &ls_mem->nh_addr.ip4); } else if (ls_mem->inner_type == AD_TYPE_IP6) { s = format (s, "Next-hop:\t%U\n\t", format_ip6_address, &ls_mem->nh_addr.ip6); } s = format (s, "Outgoing iface:\t%U\n", format_vnet_sw_if_index_name, vnm, ls_mem->sw_if_index_out); s = format (s, "\tIncoming iface:\t%U\n", format_vnet_sw_if_index_name, vnm, ls_mem->sw_if_index_in); vlib_counter_t valid, invalid; vlib_get_combined_counter (&(sm->valid_counters), ls_mem->index, &valid); vlib_get_combined_counter (&(sm->invalid_counters), ls_mem->index, &invalid); s = format (s, "\tGood rewrite traffic: \t[%Ld packets : %Ld bytes]\n", valid.packets, valid.bytes); s = format (s, "\tBad rewrite traffic: \t[%Ld packets : %Ld bytes]\n", invalid.packets, invalid.bytes); return s; } /* * Process the parameters of a localsid * Example: process from: * sr localsid address cafe::1 behavior new_srv6_localsid 5 * everything from behavior on... so in this case 'new_srv6_localsid 5' * Notice that it MUST match the keyword_str and params_str defined above. */ uword unformat_srv6_ad_localsid (unformat_input_t * input, va_list * args) { void **plugin_mem_p = va_arg (*args, void **); srv6_ad_localsid_t *ls_mem; vnet_main_t *vnm = vnet_get_main (); u8 inner_type = AD_TYPE_L2; ip46_address_t nh_addr; u32 sw_if_index_out; u32 sw_if_index_in; u8 params = 0; #define PARAM_AD_NH (1 << 0) #define PARAM_AD_OIF (1 << 1) #define PARAM_AD_IIF (1 << 2) if (!unformat (input, "end.ad")) return 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (!(params & PARAM_AD_NH) && unformat (input, "nh %U", unformat_ip4_address, &nh_addr.ip4)) { inner_type = AD_TYPE_IP4; params |= PARAM_AD_NH; } if (!(params & PARAM_AD_NH) && unformat (input, "nh %U", unformat_ip6_address, &nh_addr.ip6)) { inner_type = AD_TYPE_IP6; params |= PARAM_AD_NH; } else if (!(params & PARAM_AD_OIF) && unformat (input, "oif %U", unformat_vnet_sw_interface, vnm, &sw_if_index_out)) { params |= PARAM_AD_OIF; } else if (!(params & PARAM_AD_IIF) && unformat (input, "iif %U", unformat_vnet_sw_interface, vnm, &sw_if_index_in)) { params |= PARAM_AD_IIF; } else { break; } } /* Make sure that all parameters are supplied */ u8 params_chk = (PARAM_AD_OIF | PARAM_AD_IIF); if ((params & params_chk) != params_chk) { return 0; } /* Allocate and initialize memory block for local SID parameters */ ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1); clib_memset (ls_mem, 0, sizeof *ls_mem); *plugin_mem_p = ls_mem; /* Set local SID parameters */ ls_mem->inner_type = inner_type; if (inner_type == AD_TYPE_IP4) ls_mem->nh_addr.ip4 = nh_addr.ip4; else if (inner_type == AD_TYPE_IP6) ls_mem->nh_addr.ip6 = nh_addr.ip6; ls_mem->sw_if_index_out = sw_if_index_out; ls_mem->sw_if_index_in = sw_if_index_in; return 1; } /*************************/ /* SRv6 LocalSID FIB DPO */ static u8 * format_srv6_ad_dpo (u8 * s, va_list * args) { index_t index = va_arg (*args, index_t); CLIB_UNUSED (u32 indent) = va_arg (*args, u32); return (format (s, "SR: dynamic_proxy_index:[%u]", index)); } void srv6_ad_dpo_lock (dpo_id_t * dpo) { } void srv6_ad_dpo_unlock (dpo_id_t * dpo) { } const static dpo_vft_t srv6_ad_vft = { .dv_lock = srv6_ad_dpo_lock, .dv_unlock = srv6_ad_dpo_unlock, .dv_format = format_srv6_ad_dpo, }; const static char *const srv6_ad_ip6_nodes[] = { "srv6-ad-localsid", NULL, }; const static char *const *const srv6_ad_nodes[DPO_PROTO_NUM] = { [DPO_PROTO_IP6] = srv6_ad_ip6_nodes, }; /**********************/ static clib_error_t * srv6_ad_init (vlib_main_t * vm) { srv6_ad_main_t *sm = &srv6_ad_main; int rv = 0; sm->vlib_main = vm; sm->vnet_main = vnet_get_main (); /* Create DPO */ sm->srv6_ad_dpo_type = dpo_register_new_type (&srv6_ad_vft, srv6_ad_nodes); /* Register SRv6 LocalSID */ rv = sr_localsid_register_function (vm, function_name, keyword_str, def_str, params_str, 128, &sm->srv6_ad_dpo_type, format_srv6_ad_localsid, unformat_srv6_ad_localsid, srv6_ad_localsid_creation_fn, srv6_ad_localsid_removal_fn); if (rv < 0) clib_error_return (0, "SRv6 LocalSID function could not be registered."); else sm->srv6_localsid_behavior_id = rv; return 0; } /* *INDENT-OFF* */ VNET_FEATURE_INIT (srv6_ad2_rewrite, static) = { .arc_name = "device-input", .node_name = "srv6-ad2-rewrite", .runs_before = VNET_FEATURES ("ethernet-input"), }; VNET_FEATURE_INIT (srv6_ad4_rewrite, static) = { .arc_name = "ip4-unicast", .node_name = "srv6-ad4-rewrite", .runs_before = 0, }; VNET_FEATURE_INIT (srv6_ad6_rewrite, static) = { .arc_name = "ip6-unicast", .node_name = "srv6-ad6-rewrite", .runs_before = 0, }; VLIB_INIT_FUNCTION (srv6_ad_init); VLIB_PLUGIN_REGISTER () = { .version = VPP_BUILD_VER, .description = "Dynamic Segment Routing for IPv6 (SRv6) Proxy", }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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