tls: set flag whenever app session is freed - vpp

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author	Florin Coras <fcoras@cisco.com>	2024-01-22 18:06:41 -0800
committer	Dave Barach <vpp@barachs.net>	2024-01-23 16:32:08 +0000
commit	fad689eeba861f080596e305f2b3e5d0bfaa046d (patch)
tree	dde73a4e9531840e42758b4beea59bc1d0c66df2 /docs/_images/quic_plugin_datastructures.png
parent	77680ae56f9c8854f5ed4290b971a43cf0fa8690 (diff)

tls: set flag whenever app session is freed

Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I3d44ff851da00573343e15712284af3b9c3912e3

Diffstat (limited to 'docs/_images/quic_plugin_datastructures.png')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2016-2018 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 <stddef.h> #include <netinet/in.h> #include <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/pg/pg.h> #include <vppinfra/error.h> #include <acl/acl.h> #include <vnet/ip/icmp46_packet.h> #include <plugins/acl/fa_node.h> #include <plugins/acl/acl.h> #include <plugins/acl/lookup_context.h> #include <plugins/acl/public_inlines.h> #include <plugins/acl/session_inlines.h> #include <vppinfra/bihash_40_8.h> #include <vppinfra/bihash_template.h> typedef struct { u32 next_index; u32 sw_if_index; u32 lc_index; u32 match_acl_in_index; u32 match_rule_index; u64 packet_info[6]; u32 trace_bitmap; u8 action; } acl_fa_trace_t; /* *INDENT-OFF* */ #define foreach_acl_fa_error \ _(ACL_DROP, "ACL deny packets") \ _(ACL_PERMIT, "ACL permit packets") \ _(ACL_NEW_SESSION, "new sessions added") \ _(ACL_EXIST_SESSION, "existing session packets") \ _(ACL_CHECK, "checked packets") \ _(ACL_RESTART_SESSION_TIMER, "restart session timer") \ _(ACL_TOO_MANY_SESSIONS, "too many sessions to add new") \ /* end of errors */ typedef enum { #define _(sym,str) ACL_FA_ERROR_##sym, foreach_acl_fa_error #undef _ ACL_FA_N_ERROR, } acl_fa_error_t; /* *INDENT-ON* */ typedef struct { u32 next_index; u32 sw_if_index; u16 ethertype; } nonip_in_out_trace_t; /* packet trace format function */ static u8 * format_nonip_in_out_trace (u8 * s, u32 is_output, 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 *); nonip_in_out_trace_t *t = va_arg (*args, nonip_in_out_trace_t *); s = format (s, "%s: sw_if_index %d next_index %x ethertype %x", is_output ? "OUT-ETHER-WHITELIST" : "IN-ETHER-WHITELIST", t->sw_if_index, t->next_index, t->ethertype); return s; } static u8 * format_l2_nonip_in_trace (u8 * s, va_list * args) { return format_nonip_in_out_trace (s, 0, args); } static u8 * format_l2_nonip_out_trace (u8 * s, va_list * args) { return format_nonip_in_out_trace (s, 1, args); } #define foreach_nonip_in_error \ _(DROP, "dropped inbound non-whitelisted non-ip packets") \ _(PERMIT, "permitted inbound whitelisted non-ip packets") \ #define foreach_nonip_out_error \ _(DROP, "dropped outbound non-whitelisted non-ip packets") \ _(PERMIT, "permitted outbound whitelisted non-ip packets") \ /* *INDENT-OFF* */ typedef enum { #define _(sym,str) FA_IN_NONIP_ERROR_##sym, foreach_nonip_in_error #undef _ FA_IN_NONIP_N_ERROR, } l2_in_feat_arc_error_t; static char *fa_in_nonip_error_strings[] = { #define _(sym,string) string, foreach_nonip_in_error #undef _ }; typedef enum { #define _(sym,str) FA_OUT_NONIP_ERROR_##sym, foreach_nonip_out_error #undef _ FA_OUT_NONIP_N_ERROR, } l2_out_feat_arc_error_t; static char *fa_out_nonip_error_strings[] = { #define _(sym,string) string, foreach_nonip_out_error #undef _ }; /* *INDENT-ON* */ always_inline int is_permitted_ethertype (acl_main_t * am, int sw_if_index0, int is_output, u16 ethertype) { u16 **v = is_output ? am->output_etype_whitelist_by_sw_if_index : am->input_etype_whitelist_by_sw_if_index; u16 *whitelist = vec_elt (v, sw_if_index0); int i; if (vec_len (whitelist) == 0) return 1; for (i = 0; i < vec_len (whitelist); i++) if (whitelist[i] == ethertype) return 1; return 0; } #define get_u16(addr) ( *((u16 *)(addr)) ) always_inline uword nonip_in_out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, int is_output) { acl_main_t *am = &acl_main; u32 n_left, *from; u16 nexts[VLIB_FRAME_SIZE], *next; vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; vlib_node_runtime_t *error_node; from = vlib_frame_vector_args (frame); error_node = vlib_node_get_runtime (vm, node->node_index); vlib_get_buffers (vm, from, bufs, frame->n_vectors); /* set the initial values for the current buffer the next pointers */ b = bufs; next = nexts; n_left = frame->n_vectors; while (n_left > 0) { u32 next_index = 0; u32 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[is_output ? VLIB_TX : VLIB_RX]; u16 ethertype = 0; int error0 = 0; ethernet_header_t *h0 = vlib_buffer_get_current (b[0]); u8 *l3h0 = (u8 *) h0 + vnet_buffer (b[0])->l2.l2_len; ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2)); if (is_permitted_ethertype (am, sw_if_index0, is_output, ethertype)) vnet_feature_next (&next_index, b[0]); next[0] = next_index; if (0 == next[0]) b[0]->error = error_node->errors[error0]; if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b[0]->flags & VLIB_BUFFER_IS_TRACED))) { nonip_in_out_trace_t *t = vlib_add_trace (vm, node, b[0], sizeof (*t)); t->sw_if_index = sw_if_index0; t->ethertype = ethertype; t->next_index = next[0]; } next[0] = next[0] < node->n_next_nodes ? next[0] : 0; next++; b++; n_left--; } vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); return frame->n_vectors; } VLIB_NODE_FN (acl_in_nonip_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return nonip_in_out_node_fn (vm, node, frame, 0); } VLIB_NODE_FN (acl_out_nonip_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return nonip_in_out_node_fn (vm, node, frame, 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (acl_in_nonip_node) = { .name = "acl-plugin-in-nonip-l2", .vector_size = sizeof (u32), .format_trace = format_l2_nonip_in_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (fa_in_nonip_error_strings), .error_strings = fa_in_nonip_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_in_l2_nonip_fa_feature, static) = { .arc_name = "l2-input-nonip", .node_name = "acl-plugin-in-nonip-l2", .runs_before = VNET_FEATURES ("l2-input-feat-arc-end"), }; VLIB_REGISTER_NODE (acl_out_nonip_node) = { .name = "acl-plugin-out-nonip-l2", .vector_size = sizeof (u32), .format_trace = format_l2_nonip_out_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (fa_out_nonip_error_strings), .error_strings = fa_out_nonip_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_out_l2_nonip_fa_feature, static) = { .arc_name = "l2-output-nonip", .node_name = "acl-plugin-out-nonip-l2", .runs_before = VNET_FEATURES ("l2-output-feat-arc-end"), }; /* *INDENT-ON* */ always_inline u16 get_current_policy_epoch (acl_main_t * am, int is_input, u32 sw_if_index0) { u32 **p_epoch_vec = is_input ? &am->input_policy_epoch_by_sw_if_index : &am->output_policy_epoch_by_sw_if_index; u16 current_policy_epoch = sw_if_index0 < vec_len (*p_epoch_vec) ? vec_elt (*p_epoch_vec, sw_if_index0) : (is_input * FA_POLICY_EPOCH_IS_INPUT); return current_policy_epoch; } always_inline void maybe_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b, u32 sw_if_index0, u32 lc_index0, u16 next0, int match_acl_in_index, int match_rule_index, fa_5tuple_t * fa_5tuple, u8 action, u32 trace_bitmap) { if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED)) { acl_fa_trace_t *t = vlib_add_trace (vm, node, b, sizeof (*t)); t->sw_if_index = sw_if_index0; t->lc_index = lc_index0; t->next_index = next0; t->match_acl_in_index = match_acl_in_index; t->match_rule_index = match_rule_index; t->packet_info[0] = fa_5tuple->kv_40_8.key[0]; t->packet_info[1] = fa_5tuple->kv_40_8.key[1]; t->packet_info[2] = fa_5tuple->kv_40_8.key[2]; t->packet_info[3] = fa_5tuple->kv_40_8.key[3]; t->packet_info[4] = fa_5tuple->kv_40_8.key[4]; t->packet_info[5] = fa_5tuple->kv_40_8.value; t->action = action; t->trace_bitmap = trace_bitmap; } } always_inline int stale_session_deleted (acl_main_t * am, int is_input, acl_fa_per_worker_data_t * pw, u64 now, u32 sw_if_index0, fa_full_session_id_t f_sess_id) { u16 current_policy_epoch = get_current_policy_epoch (am, is_input, sw_if_index0); /* if the MSB of policy epoch matches but not the LSB means it is a stale session */ if ((0 == ((current_policy_epoch ^ f_sess_id.intf_policy_epoch) & FA_POLICY_EPOCH_IS_INPUT)) && (current_policy_epoch != f_sess_id.intf_policy_epoch)) { /* delete session and increment the counter */ vec_validate (pw->fa_session_epoch_change_by_sw_if_index, sw_if_index0); vec_elt (pw->fa_session_epoch_change_by_sw_if_index, sw_if_index0)++; if (acl_fa_conn_list_delete_session (am, f_sess_id, now)) { /* delete the session only if we were able to unlink it */ acl_fa_two_stage_delete_session (am, sw_if_index0, f_sess_id, now); } return 1; } else return 0; } always_inline void get_sw_if_index_xN (int vector_sz, int is_input, vlib_buffer_t ** b, u32 * out_sw_if_index) { int ii; for (ii = 0; ii < vector_sz; ii++) if (is_input) out_sw_if_index[ii] = vnet_buffer (b[ii])->sw_if_index[VLIB_RX]; else out_sw_if_index[ii] = vnet_buffer (b[ii])->sw_if_index[VLIB_TX]; } always_inline void fill_5tuple_xN (int vector_sz, acl_main_t * am, int is_ip6, int is_input, int is_l2_path, vlib_buffer_t ** b, u32 * sw_if_index, fa_5tuple_t * out_fa_5tuple) { int ii; for (ii = 0; ii < vector_sz; ii++) acl_fill_5tuple (am, sw_if_index[ii], b[ii], is_ip6, is_input, is_l2_path, &out_fa_5tuple[ii]); } always_inline void make_session_hash_xN (int vector_sz, acl_main_t * am, int is_ip6, u32 * sw_if_index, fa_5tuple_t * fa_5tuple, u64 * out_hash) { int ii; for (ii = 0; ii < vector_sz; ii++) out_hash[ii] = acl_fa_make_session_hash (am, is_ip6, sw_if_index[ii], &fa_5tuple[ii]); } always_inline void prefetch_session_entry (acl_main_t * am, fa_full_session_id_t f_sess_id) { fa_session_t *sess = get_session_ptr_no_check (am, f_sess_id.thread_index, f_sess_id.session_index); CLIB_PREFETCH (sess, 2 * CLIB_CACHE_LINE_BYTES, STORE); } always_inline u8 process_established_session (vlib_main_t * vm, acl_main_t * am, u32 counter_node_index, int is_input, u64 now, fa_full_session_id_t f_sess_id, u32 * sw_if_index, fa_5tuple_t * fa_5tuple, u32 pkt_len, int node_trace_on, u32 * trace_bitmap) { u8 action = 0; fa_session_t *sess = get_session_ptr_no_check (am, f_sess_id.thread_index, f_sess_id.session_index); int old_timeout_type = fa_session_get_timeout_type (am, sess); action = acl_fa_track_session (am, is_input, sw_if_index[0], now, sess, &fa_5tuple[0], pkt_len); int new_timeout_type = fa_session_get_timeout_type (am, sess); /* Tracking might have changed the session timeout type, e.g. from transient to established */ if (PREDICT_FALSE (old_timeout_type != new_timeout_type)) { acl_fa_restart_timer_for_session (am, now, f_sess_id); vlib_node_increment_counter (vm, counter_node_index, ACL_FA_ERROR_ACL_RESTART_SESSION_TIMER, 1); if (node_trace_on) *trace_bitmap |= 0x00010000 + ((0xff & old_timeout_type) << 8) + (0xff & new_timeout_type); } /* * I estimate the likelihood to be very low - the VPP needs * to have >64K interfaces to start with and then on * exactly 64K indices apart needs to be exactly the same * 5-tuple... Anyway, since this probability is nonzero - * print an error and drop the unlucky packet. * If this shows up in real world, we would need to bump * the hash key length. */ if (PREDICT_FALSE (sess->sw_if_index != sw_if_index[0])) { clib_warning ("BUG: session LSB16(sw_if_index)=%d and 5-tuple=%d collision!", sess->sw_if_index, sw_if_index[0]); action = 0; } return action; } #define ACL_PLUGIN_VECTOR_SIZE 4 #define ACL_PLUGIN_PREFETCH_GAP 3 always_inline void acl_fa_node_common_prepare_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip6, int is_input, int is_l2_path, int with_stateful_datapath) /* , int node_trace_on, int reclassify_sessions) */ { u32 n_left, *from; acl_main_t *am = &acl_main; uword thread_index = os_get_thread_index (); acl_fa_per_worker_data_t *pw = &am->per_worker_data[thread_index]; vlib_buffer_t **b; u32 *sw_if_index; fa_5tuple_t *fa_5tuple; u64 *hash; from = vlib_frame_vector_args (frame); vlib_get_buffers (vm, from, pw->bufs, frame->n_vectors); /* set the initial values for the current buffer the next pointers */ b = pw->bufs; sw_if_index = pw->sw_if_indices; fa_5tuple = pw->fa_5tuples; hash = pw->hashes; /* * fill the sw_if_index, 5tuple and session hash, * First in strides of size ACL_PLUGIN_VECTOR_SIZE, * with buffer prefetch being * ACL_PLUGIN_PREFETCH_GAP * ACL_PLUGIN_VECTOR_SIZE entries * in front. Then with a simple single loop. */ n_left = frame->n_vectors; while (n_left >= (ACL_PLUGIN_PREFETCH_GAP + 1) * ACL_PLUGIN_VECTOR_SIZE) { const int vec_sz = ACL_PLUGIN_VECTOR_SIZE; { int ii; for (ii = ACL_PLUGIN_PREFETCH_GAP * vec_sz; ii < (ACL_PLUGIN_PREFETCH_GAP + 1) * vec_sz; ii++) { CLIB_PREFETCH (b[ii], CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (b[ii]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); } } get_sw_if_index_xN (vec_sz, is_input, b, sw_if_index); fill_5tuple_xN (vec_sz, am, is_ip6, is_input, is_l2_path, &b[0], &sw_if_index[0], &fa_5tuple[0]); if (with_stateful_datapath) make_session_hash_xN (vec_sz, am, is_ip6, &sw_if_index[0], &fa_5tuple[0], &hash[0]); n_left -= vec_sz; fa_5tuple += vec_sz; b += vec_sz; sw_if_index += vec_sz; hash += vec_sz; } while (n_left > 0) { const int vec_sz = 1; get_sw_if_index_xN (vec_sz, is_input, b, sw_if_index); fill_5tuple_xN (vec_sz, am, is_ip6, is_input, is_l2_path, &b[0], &sw_if_index[0], &fa_5tuple[0]); if (with_stateful_datapath) make_session_hash_xN (vec_sz, am, is_ip6, &sw_if_index[0], &fa_5tuple[0], &hash[0]); n_left -= vec_sz; fa_5tuple += vec_sz; b += vec_sz; sw_if_index += vec_sz; hash += vec_sz; } } always_inline uword acl_fa_inner_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip6, int is_input, int is_l2_path, int with_stateful_datapath, int node_trace_on, int reclassify_sessions) { u32 n_left, *from; u32 pkts_exist_session = 0; u32 pkts_new_session = 0; u32 pkts_acl_permit = 0; u32 trace_bitmap = 0; acl_main_t *am = &acl_main; vlib_node_runtime_t *error_node; vlib_error_t no_error_existing_session; u64 now = clib_cpu_time_now (); uword thread_index = os_get_thread_index (); acl_fa_per_worker_data_t *pw = &am->per_worker_data[thread_index]; u16 *next; vlib_buffer_t **b; u32 *sw_if_index; fa_5tuple_t *fa_5tuple; u64 *hash; /* for the delayed counters */ u32 saved_matched_acl_index = 0; u32 saved_matched_ace_index = 0; u32 saved_packet_count = 0; u32 saved_byte_count = 0; from = vlib_frame_vector_args (frame); error_node = vlib_node_get_runtime (vm, node->node_index); no_error_existing_session = error_node->errors[ACL_FA_ERROR_ACL_EXIST_SESSION]; b = pw->bufs; next = pw->nexts; sw_if_index = pw->sw_if_indices; fa_5tuple = pw->fa_5tuples; hash = pw->hashes; /* * Now the "hard" work of session lookups and ACL lookups for new sessions. * Due to the complexity, do it for the time being in single loop with * the pipeline of three prefetches: * 1) bucket for the session bihash * 2) data for the session bihash * 3) worker session record */ fa_full_session_id_t f_sess_id_next = {.as_u64 = ~0ULL }; /* find the "next" session so we can kickstart the pipeline */ if (with_stateful_datapath) acl_fa_find_session_with_hash (am, is_ip6, sw_if_index[0], hash[0], &fa_5tuple[0], &f_sess_id_next.as_u64); n_left = frame->n_vectors; while (n_left > 0) { u8 action = 0; u32 lc_index0 = ~0; int acl_check_needed = 1; u32 match_acl_in_index = ~0; u32 match_acl_pos = ~0; u32 match_rule_index = ~0; next[0] = 0; /* drop by default */ /* Try to match an existing session first */ if (with_stateful_datapath) { fa_full_session_id_t f_sess_id = f_sess_id_next; switch (n_left) { default: acl_fa_prefetch_session_bucket_for_hash (am, is_ip6, hash[5]); /* fallthrough */ case 5: case 4: acl_fa_prefetch_session_data_for_hash (am, is_ip6, hash[3]); /* fallthrough */ case 3: case 2: acl_fa_find_session_with_hash (am, is_ip6, sw_if_index[1], hash[1], &fa_5tuple[1], &f_sess_id_next.as_u64); if (f_sess_id_next.as_u64 != ~0ULL) { prefetch_session_entry (am, f_sess_id_next); } /* fallthrough */ case 1: if (f_sess_id.as_u64 != ~0ULL) { if (node_trace_on) { trace_bitmap |= 0x80000000; } ASSERT (f_sess_id.thread_index < vec_len (vlib_mains)); b[0]->error = no_error_existing_session; acl_check_needed = 0; pkts_exist_session += 1; action = process_established_session (vm, am, node->node_index, is_input, now, f_sess_id, &sw_if_index[0], &fa_5tuple[0], b[0]->current_length, node_trace_on, &trace_bitmap); /* expose the session id to the tracer */ if (node_trace_on) { match_rule_index = f_sess_id.session_index; } if (reclassify_sessions) { if (PREDICT_FALSE (stale_session_deleted (am, is_input, pw, now, sw_if_index[0], f_sess_id))) { acl_check_needed = 1; if (node_trace_on) { trace_bitmap |= 0x40000000; } /* * If we have just deleted the session, and the next * buffer is the same 5-tuple, that session prediction * is wrong, correct it. */ if ((f_sess_id_next.as_u64 != ~0ULL) && 0 == memcmp (&fa_5tuple[1], &fa_5tuple[0], sizeof (fa_5tuple[1]))) f_sess_id_next.as_u64 = ~0ULL; } } } } if (acl_check_needed) { if (is_input) lc_index0 = am->input_lc_index_by_sw_if_index[sw_if_index[0]]; else lc_index0 = am->output_lc_index_by_sw_if_index[sw_if_index[0]]; action = 0; /* deny by default */ int is_match = acl_plugin_match_5tuple_inline (am, lc_index0, (fa_5tuple_opaque_t *) & fa_5tuple[0], is_ip6, &action, &match_acl_pos, &match_acl_in_index, &match_rule_index, &trace_bitmap); if (PREDICT_FALSE (is_match && am->interface_acl_counters_enabled)) { u32 buf_len = vlib_buffer_length_in_chain (vm, b[0]); vlib_increment_combined_counter (am->combined_acl_counters + saved_matched_acl_index, thread_index, saved_matched_ace_index, saved_packet_count, saved_byte_count); saved_matched_acl_index = match_acl_in_index; saved_matched_ace_index = match_rule_index; saved_packet_count = 1; saved_byte_count = buf_len; /* prefetch the counter that we are going to increment */ vlib_prefetch_combined_counter (am->combined_acl_counters + saved_matched_acl_index, thread_index, saved_matched_ace_index); } b[0]->error = error_node->errors[action]; if (1 == action) pkts_acl_permit++; if (2 == action) { if (!acl_fa_can_add_session (am, is_input, sw_if_index[0])) acl_fa_try_recycle_session (am, is_input, thread_index, sw_if_index[0], now); if (acl_fa_can_add_session (am, is_input, sw_if_index[0])) { u16 current_policy_epoch = get_current_policy_epoch (am, is_input, sw_if_index[0]); fa_full_session_id_t f_sess_id = acl_fa_add_session (am, is_input, is_ip6, sw_if_index[0], now, &fa_5tuple[0], current_policy_epoch); /* perform the accounting for the newly added session */ process_established_session (vm, am, node->node_index, is_input, now, f_sess_id, &sw_if_index[0], &fa_5tuple[0], b[0]->current_length, node_trace_on, &trace_bitmap); pkts_new_session++; /* * If the next 5tuple is the same and we just added the session, * the f_sess_id_next can not be ~0. Correct it. */ if ((f_sess_id_next.as_u64 == ~0ULL) && 0 == memcmp (&fa_5tuple[1], &fa_5tuple[0], sizeof (fa_5tuple[1]))) f_sess_id_next = f_sess_id; } else { action = 0; b[0]->error = error_node->errors [ACL_FA_ERROR_ACL_TOO_MANY_SESSIONS]; } } } { /* speculatively get the next0 */ vnet_feature_next_u16 (&next[0], b[0]); /* if the action is not deny - then use that next */ next[0] = action ? next[0] : 0; } if (node_trace_on) // PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) { maybe_trace_buffer (vm, node, b[0], sw_if_index[0], lc_index0, next[0], match_acl_in_index, match_rule_index, &fa_5tuple[0], action, trace_bitmap); } next++; b++; fa_5tuple++; sw_if_index++; hash++; n_left -= 1; } } vlib_buffer_enqueue_to_next (vm, node, from, pw->nexts, frame->n_vectors); /* * if we were had an acl match then we have a counter to increment. * else it is all zeroes, so this will be harmless. */ vlib_increment_combined_counter (am->combined_acl_counters + saved_matched_acl_index, thread_index, saved_matched_ace_index, saved_packet_count, saved_byte_count); vlib_node_increment_counter (vm, node->node_index, ACL_FA_ERROR_ACL_CHECK, frame->n_vectors); vlib_node_increment_counter (vm, node->node_index, ACL_FA_ERROR_ACL_EXIST_SESSION, pkts_exist_session); vlib_node_increment_counter (vm, node->node_index, ACL_FA_ERROR_ACL_NEW_SESSION, pkts_new_session); vlib_node_increment_counter (vm, node->node_index, ACL_FA_ERROR_ACL_PERMIT, pkts_acl_permit); return frame->n_vectors; } always_inline uword acl_fa_outer_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip6, int is_input, int is_l2_path, int do_stateful_datapath) { acl_main_t *am = &acl_main; acl_fa_node_common_prepare_fn (vm, node, frame, is_ip6, is_input, is_l2_path, do_stateful_datapath); if (am->reclassify_sessions) { if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) return acl_fa_inner_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, do_stateful_datapath, 1 /* trace */ , 1 /* reclassify */ ); else return acl_fa_inner_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, do_stateful_datapath, 0, 1 /* reclassify */ ); } else { if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) return acl_fa_inner_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, do_stateful_datapath, 1 /* trace */ , 0); else return acl_fa_inner_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, do_stateful_datapath, 0, 0); } } always_inline uword acl_fa_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip6, int is_input, int is_l2_path) { /* select the reclassify/no-reclassify version of the datapath */ acl_main_t *am = &acl_main; if (am->fa_sessions_hash_is_initialized) return acl_fa_outer_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, 1); else return acl_fa_outer_node_fn (vm, node, frame, is_ip6, is_input, is_l2_path, 0); } static u8 * format_fa_5tuple (u8 * s, va_list * args) { fa_5tuple_t *p5t = va_arg (*args, fa_5tuple_t *); void *paddr0; void *paddr1; void *format_address_func; void *ip_af; void *ip_frag_txt = p5t->pkt.is_nonfirst_fragment ? " non-initial fragment" : ""; if (p5t->pkt.is_ip6) { ip_af = "ip6"; format_address_func = format_ip6_address; paddr0 = &p5t->ip6_addr[0]; paddr1 = &p5t->ip6_addr[1]; } else { ip_af = "ip4"; format_address_func = format_ip4_address; paddr0 = &p5t->ip4_addr[0]; paddr1 = &p5t->ip4_addr[1]; } s = format (s, "lc_index %d l3 %s%s ", p5t->pkt.lc_index, ip_af, ip_frag_txt); s = format (s, "%U -> %U ", format_address_func, paddr0, format_address_func, paddr1); s = format (s, "%U ", format_fa_session_l4_key, &p5t->l4); s = format (s, "tcp flags (%s) %02x rsvd %x", p5t->pkt.tcp_flags_valid ? "valid" : "invalid", p5t->pkt.tcp_flags, p5t->pkt.flags_reserved); return s; } #ifndef CLIB_MARCH_VARIANT u8 * format_acl_plugin_5tuple (u8 * s, va_list * args) { return format_fa_5tuple (s, args); } #endif /* packet trace format function */ static u8 * format_acl_plugin_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 *); acl_fa_trace_t *t = va_arg (*args, acl_fa_trace_t *); s = format (s, "acl-plugin: lc_index: %d, sw_if_index %d, next index %d, action: %d, match: acl %d rule %d trace_bits %08x\n" " pkt info %016llx %016llx %016llx %016llx %016llx %016llx", t->lc_index, t->sw_if_index, t->next_index, t->action, t->match_acl_in_index, t->match_rule_index, t->trace_bitmap, t->packet_info[0], t->packet_info[1], t->packet_info[2], t->packet_info[3], t->packet_info[4], t->packet_info[5]); /* Now also print out the packet_info in a form usable by humans */ s = format (s, "\n %U", format_fa_5tuple, t->packet_info); return s; } /* *INDENT-OFF* */ static char *acl_fa_error_strings[] = { #define _(sym,string) string, foreach_acl_fa_error #undef _ }; VLIB_NODE_FN (acl_in_l2_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 1, 1, 1); } VLIB_NODE_FN (acl_in_l2_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 0, 1, 1); } VLIB_NODE_FN (acl_out_l2_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 1, 0, 1); } VLIB_NODE_FN (acl_out_l2_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 0, 0, 1); } /**** L3 processing path nodes ****/ VLIB_NODE_FN (acl_in_fa_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 1, 1, 0); } VLIB_NODE_FN (acl_in_fa_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 0, 1, 0); } VLIB_NODE_FN (acl_out_fa_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 1, 0, 0); } VLIB_NODE_FN (acl_out_fa_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return acl_fa_node_fn (vm, node, frame, 0, 0, 0); } VLIB_REGISTER_NODE (acl_in_l2_ip6_node) = { .name = "acl-plugin-in-ip6-l2", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_in_l2_ip6_fa_feature, static) = { .arc_name = "l2-input-ip6", .node_name = "acl-plugin-in-ip6-l2", .runs_before = VNET_FEATURES ("l2-input-feat-arc-end"), }; VLIB_REGISTER_NODE (acl_in_l2_ip4_node) = { .name = "acl-plugin-in-ip4-l2", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_in_l2_ip4_fa_feature, static) = { .arc_name = "l2-input-ip4", .node_name = "acl-plugin-in-ip4-l2", .runs_before = VNET_FEATURES ("l2-input-feat-arc-end"), }; VLIB_REGISTER_NODE (acl_out_l2_ip6_node) = { .name = "acl-plugin-out-ip6-l2", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_out_l2_ip6_fa_feature, static) = { .arc_name = "l2-output-ip6", .node_name = "acl-plugin-out-ip6-l2", .runs_before = VNET_FEATURES ("l2-output-feat-arc-end"), }; VLIB_REGISTER_NODE (acl_out_l2_ip4_node) = { .name = "acl-plugin-out-ip4-l2", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_out_l2_ip4_fa_feature, static) = { .arc_name = "l2-output-ip4", .node_name = "acl-plugin-out-ip4-l2", .runs_before = VNET_FEATURES ("l2-output-feat-arc-end"), }; VLIB_REGISTER_NODE (acl_in_fa_ip6_node) = { .name = "acl-plugin-in-ip6-fa", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_in_ip6_fa_feature, static) = { .arc_name = "ip6-unicast", .node_name = "acl-plugin-in-ip6-fa", .runs_before = VNET_FEATURES ("ip6-flow-classify"), }; VLIB_REGISTER_NODE (acl_in_fa_ip4_node) = { .name = "acl-plugin-in-ip4-fa", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_in_ip4_fa_feature, static) = { .arc_name = "ip4-unicast", .node_name = "acl-plugin-in-ip4-fa", .runs_before = VNET_FEATURES ("ip4-flow-classify"), }; VLIB_REGISTER_NODE (acl_out_fa_ip6_node) = { .name = "acl-plugin-out-ip6-fa", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_out_ip6_fa_feature, static) = { .arc_name = "ip6-output", .node_name = "acl-plugin-out-ip6-fa", .runs_before = VNET_FEATURES ("interface-output"), }; VLIB_REGISTER_NODE (acl_out_fa_ip4_node) = { .name = "acl-plugin-out-ip4-fa", .vector_size = sizeof (u32), .format_trace = format_acl_plugin_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (acl_fa_error_strings), .error_strings = acl_fa_error_strings, .n_next_nodes = ACL_FA_N_NEXT, /* edit / add dispositions here */ .next_nodes = { [ACL_FA_ERROR_DROP] = "error-drop", } }; VNET_FEATURE_INIT (acl_out_ip4_fa_feature, static) = { .arc_name = "ip4-output", .node_name = "acl-plugin-out-ip4-fa", .runs_before = VNET_FEATURES ("interface-output"), }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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