X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fgbp%2Fgbp_policy.c;h=127c6d3f05952b584709b92f1d63b59882c66c9a;hb=59f71132e;hp=6d84a994d4197ffc98868564e288a4bb86266ca8;hpb=93cc3ee3b3a9c9224a1446625882205f3282a949;p=vpp.git diff --git a/src/plugins/gbp/gbp_policy.c b/src/plugins/gbp/gbp_policy.c index 6d84a994d41..127c6d3f059 100644 --- a/src/plugins/gbp/gbp_policy.c +++ b/src/plugins/gbp/gbp_policy.c @@ -14,261 +14,13 @@ */ #include - +#include #include -/** - * Grouping of global data for the GBP source EPG classification feature - */ -typedef struct gbp_policy_main_t_ -{ - /** - * Next nodes for L2 output features - */ - u32 l2_output_feat_next[2][32]; -} gbp_policy_main_t; - -static gbp_policy_main_t gbp_policy_main; - -#define foreach_gbp_policy \ - _(DENY, "deny") - -typedef enum -{ -#define _(sym,str) GBP_ERROR_##sym, - foreach_gbp_policy -#undef _ - GBP_POLICY_N_ERROR, -} gbp_policy_error_t; - -static char *gbp_policy_error_strings[] = { -#define _(sym,string) string, - foreach_gbp_policy -#undef _ -}; - -typedef enum -{ -#define _(sym,str) GBP_POLICY_NEXT_##sym, - foreach_gbp_policy -#undef _ - GBP_POLICY_N_NEXT, -} gbp_policy_next_t; - -/** - * per-packet trace data - */ -typedef struct gbp_policy_trace_t_ -{ - /* per-pkt trace data */ - u32 src_epg; - u32 dst_epg; - u32 acl_index; - u32 allowed; -} gbp_policy_trace_t; - -static uword -gbp_policy_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, u8 is_port_based) -{ - gbp_main_t *gm = &gbp_main; - gbp_policy_main_t *gpm = &gbp_policy_main; - u32 n_left_from, *from, *to_next; - u32 next_index; - - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - const ethernet_header_t *h0; - const gbp_endpoint_t *ge0; - gbp_policy_next_t next0; - gbp_contract_key_t key0; - gbp_contract_value_t value0 = { - .as_u64 = ~0, - }; - u32 bi0, sw_if_index0; - vlib_buffer_t *b0; - - next0 = GBP_POLICY_NEXT_DENY; - 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); - h0 = vlib_buffer_get_current (b0); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; - - /* - * If the A0bit is set then policy has already been applied - * and we skip enforcement here. - */ - if (vnet_buffer2 (b0)->gbp.flags & VXLAN_GBP_GPFLAGS_A) - { - next0 = vnet_l2_feature_next (b0, - gpm->l2_output_feat_next - [is_port_based], - (is_port_based ? - L2OUTPUT_FEAT_GBP_POLICY_PORT : - L2OUTPUT_FEAT_GBP_POLICY_MAC)); - key0.as_u32 = ~0; - goto trace; - } - /* - * determine the src and dst EPG - */ - if (is_port_based) - ge0 = gbp_endpoint_find_itf (sw_if_index0); - else - ge0 = gbp_endpoint_find_mac (h0->dst_address, - vnet_buffer (b0)->l2.bd_index); - - if (NULL != ge0) - key0.gck_dst = ge0->ge_epg_id; - else - /* If you cannot determine the destination EP then drop */ - goto trace; - - key0.gck_src = vnet_buffer2 (b0)->gbp.src_epg; - - if (EPG_INVALID != key0.gck_src) - { - if (PREDICT_FALSE (key0.gck_src == key0.gck_dst)) - { - /* - * intra-epg allowed - */ - next0 = - vnet_l2_feature_next (b0, - gpm->l2_output_feat_next - [is_port_based], - (is_port_based ? - L2OUTPUT_FEAT_GBP_POLICY_PORT : - L2OUTPUT_FEAT_GBP_POLICY_MAC)); - vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A; - } - else - { - value0.as_u64 = gbp_acl_lookup (&key0); - - if (~0 != value0.gc_lc_index) - { - fa_5tuple_opaque_t pkt_5tuple0; - u8 action0 = 0; - u32 acl_pos_p0, acl_match_p0; - u32 rule_match_p0, trace_bitmap0; - u8 *h0, l2_len0; - u16 ether_type0; - u8 is_ip60 = 0; - - l2_len0 = vnet_buffer (b0)->l2.l2_len; - h0 = vlib_buffer_get_current (b0); - - ether_type0 = - clib_net_to_host_u16 (*(u16 *) (h0 + l2_len0 - 2)); - - is_ip60 = (ether_type0 == ETHERNET_TYPE_IP6) ? 1 : 0; - /* - * tests against the ACL - */ - acl_plugin_fill_5tuple_inline (gm-> - acl_plugin.p_acl_main, - value0.gc_lc_index, b0, - is_ip60, - /* is_input */ 0, - /* is_l2_path */ 1, - &pkt_5tuple0); - acl_plugin_match_5tuple_inline (gm-> - acl_plugin.p_acl_main, - value0.gc_lc_index, - &pkt_5tuple0, is_ip60, - &action0, &acl_pos_p0, - &acl_match_p0, - &rule_match_p0, - &trace_bitmap0); - - if (action0 > 0) - { - vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A; - - next0 = - vnet_l2_feature_next (b0, - gpm->l2_output_feat_next - [is_port_based], - (is_port_based ? - L2OUTPUT_FEAT_GBP_POLICY_PORT - : - L2OUTPUT_FEAT_GBP_POLICY_MAC)); - ; - } - } - } - } - else - { - /* - * the src EPG is not set when the packet arrives on an EPG - * uplink interface and we do not need to apply policy - */ - next0 = - vnet_l2_feature_next (b0, - gpm->l2_output_feat_next[is_port_based], - (is_port_based ? - L2OUTPUT_FEAT_GBP_POLICY_PORT : - L2OUTPUT_FEAT_GBP_POLICY_MAC)); - } - - trace: - if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) - { - gbp_policy_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->src_epg = key0.gck_src; - t->dst_epg = key0.gck_dst; - t->acl_index = value0.gc_acl_index; - t->allowed = (next0 != GBP_POLICY_NEXT_DENY); - } - - /* 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; -} - -static uword -gbp_policy_port (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - return (gbp_policy_inline (vm, node, frame, 1)); -} - -static uword -gbp_policy_mac (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - return (gbp_policy_inline (vm, node, frame, 0)); -} +gbp_policy_main_t gbp_policy_main; /* packet trace format function */ -static u8 * +u8 * format_gbp_policy_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); @@ -276,53 +28,15 @@ format_gbp_policy_trace (u8 * s, va_list * args) gbp_policy_trace_t *t = va_arg (*args, gbp_policy_trace_t *); s = - format (s, "src:%d, dst:%d, acl:%d allowed:%d", - t->src_epg, t->dst_epg, t->acl_index, t->allowed); + format (s, + "scope:%d sclass:%d, dclass:%d, action:%U flags:%U acl: %d rule: %d", + t->scope, t->sclass, t->dclass, format_gbp_rule_action, t->action, + format_vxlan_gbp_header_gpflags, t->flags, t->acl_match, + t->rule_match); return s; } -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gbp_policy_port_node) = { - .function = gbp_policy_port, - .name = "gbp-policy-port", - .vector_size = sizeof (u32), - .format_trace = format_gbp_policy_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(gbp_policy_error_strings), - .error_strings = gbp_policy_error_strings, - - .n_next_nodes = GBP_POLICY_N_NEXT, - - .next_nodes = { - [GBP_POLICY_NEXT_DENY] = "error-drop", - }, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (gbp_policy_port_node, gbp_policy_port); - -VLIB_REGISTER_NODE (gbp_policy_mac_node) = { - .function = gbp_policy_mac, - .name = "gbp-policy-mac", - .vector_size = sizeof (u32), - .format_trace = format_gbp_policy_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(gbp_policy_error_strings), - .error_strings = gbp_policy_error_strings, - - .n_next_nodes = GBP_POLICY_N_NEXT, - - .next_nodes = { - [GBP_POLICY_NEXT_DENY] = "error-drop", - }, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (gbp_policy_mac_node, gbp_policy_mac); - -/* *INDENT-ON* */ - static clib_error_t * gbp_policy_init (vlib_main_t * vm) { @@ -330,16 +44,26 @@ gbp_policy_init (vlib_main_t * vm) clib_error_t *error = 0; /* Initialize the feature next-node indexes */ + vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "gbp-policy-port"); feat_bitmap_init_next_nodes (vm, - gbp_policy_port_node.index, + node->index, L2OUTPUT_N_FEAT, l2output_get_feat_names (), - gpm->l2_output_feat_next[1]); + gpm->l2_output_feat_next[GBP_POLICY_PORT]); + + node = vlib_get_node_by_name (vm, (u8 *) "gbp-policy-mac"); + feat_bitmap_init_next_nodes (vm, + node->index, + L2OUTPUT_N_FEAT, + l2output_get_feat_names (), + gpm->l2_output_feat_next[GBP_POLICY_MAC]); + + node = vlib_get_node_by_name (vm, (u8 *) "gbp-policy-lpm"); feat_bitmap_init_next_nodes (vm, - gbp_policy_mac_node.index, + node->index, L2OUTPUT_N_FEAT, l2output_get_feat_names (), - gpm->l2_output_feat_next[0]); + gpm->l2_output_feat_next[GBP_POLICY_LPM]); return error; }