diff options
Diffstat (limited to 'vnet')
| -rw-r--r-- | vnet/Makefile.am | 3 | ||||
| -rw-r--r-- | vnet/vnet/classify/vnet_classify.c | 92 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_classify.h | 76 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_input.c | 5 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_input.h | 4 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_input_classify.c (renamed from vnet/vnet/l2/l2_classify.c) | 278 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_output.h | 1 | ||||
| -rw-r--r-- | vnet/vnet/l2/l2_output_classify.c | 661 |
8 files changed, 987 insertions, 133 deletions
diff --git a/vnet/Makefile.am b/vnet/Makefile.am index fd9c3e508b7..71680b99aeb 100644 --- a/vnet/Makefile.am +++ b/vnet/Makefile.am @@ -111,7 +111,8 @@ libvnet_la_SOURCES += \ vnet/l2/feat_bitmap.c \ vnet/l2/l2_bd.c \ vnet/l2/l2_bvi.c \ - vnet/l2/l2_classify.c \ + vnet/l2/l2_input_classify.c \ + vnet/l2/l2_output_classify.c \ vnet/l2/l2_efp_filter.c \ vnet/l2/l2_fib.c \ vnet/l2/l2_flood.c \ diff --git a/vnet/vnet/classify/vnet_classify.c b/vnet/vnet/classify/vnet_classify.c index 3b75ab5dc67..2eee0f5671e 100644 --- a/vnet/vnet/classify/vnet_classify.c +++ b/vnet/vnet/classify/vnet_classify.c @@ -16,7 +16,7 @@ #include <vnet/classify/input_acl.h> #include <vnet/ip/ip.h> #include <vnet/api_errno.h> /* for API error numbers */ -#include <vnet/l2/l2_classify.h> /* for L2_CLASSIFY_NEXT_xxx */ +#include <vnet/l2/l2_classify.h> /* for L2_INPUT_CLASSIFY_NEXT_xxx */ vnet_classify_main_t vnet_classify_main; @@ -1023,14 +1023,14 @@ uword unformat_classify_mask (unformat_input_t * input, va_list * args) return 0; } -#define foreach_l2_next \ +#define foreach_l2_input_next \ _(drop, DROP) \ _(ethernet, ETHERNET_INPUT) \ _(ip4, IP4_INPUT) \ _(ip6, IP6_INPUT) \ _(li, LI) -uword unformat_l2_next_index (unformat_input_t * input, va_list * args) +uword unformat_l2_input_next_index (unformat_input_t * input, va_list * args) { vnet_classify_main_t * cm = &vnet_classify_main; u32 * miss_next_indexp = va_arg (*args, u32 *); @@ -1049,8 +1049,47 @@ uword unformat_l2_next_index (unformat_input_t * input, va_list * args) } #define _(n,N) \ - if (unformat (input, #n)) { next_index = L2_CLASSIFY_NEXT_##N; goto out;} - foreach_l2_next; + if (unformat (input, #n)) { next_index = L2_INPUT_CLASSIFY_NEXT_##N; goto out;} + foreach_l2_input_next; +#undef _ + + if (unformat (input, "%d", &tmp)) + { + next_index = tmp; + goto out; + } + + return 0; + + out: + *miss_next_indexp = next_index; + return 1; +} + +#define foreach_l2_output_next \ +_(drop, DROP) + +uword unformat_l2_output_next_index (unformat_input_t * input, va_list * args) +{ + vnet_classify_main_t * cm = &vnet_classify_main; + u32 * miss_next_indexp = va_arg (*args, u32 *); + u32 next_index = 0; + u32 tmp; + int i; + + /* First try registered unformat fns, allowing override... */ + for (i = 0; i < vec_len (cm->unformat_l2_next_index_fns); i++) + { + if (unformat (input, "%U", cm->unformat_l2_next_index_fns[i], &tmp)) + { + next_index = tmp; + goto out; + } + } + +#define _(n,N) \ + if (unformat (input, #n)) { next_index = L2_OUTPUT_CLASSIFY_NEXT_##N; goto out;} + foreach_l2_output_next; #undef _ if (unformat (input, "%d", &tmp)) @@ -1225,7 +1264,10 @@ classify_table_command_fn (vlib_main_t * vm, else if (unformat (input, "miss-next %U", unformat_ip_next_index, &miss_next_index)) ; - else if (unformat (input, "l2-miss-next %U", unformat_l2_next_index, + else if (unformat (input, "l2-input-miss-next %U", unformat_l2_input_next_index, + &miss_next_index)) + ; + else if (unformat (input, "l2-output-miss-next %U", unformat_l2_output_next_index, &miss_next_index)) ; else if (unformat (input, "acl-miss-next %U", unformat_acl_next_index, @@ -1802,7 +1844,10 @@ classify_session_command_fn (vlib_main_t * vm, else if (unformat (input, "hit-next %U", unformat_ip_next_index, &hit_next_index)) ; - else if (unformat (input, "l2-hit-next %U", unformat_l2_next_index, + else if (unformat (input, "l2-input-hit-next %U", unformat_l2_input_next_index, + &hit_next_index)) + ; + else if (unformat (input, "l2-output-hit-next %U", unformat_l2_output_next_index, &hit_next_index)) ; else if (unformat (input, "acl-hit-next %U", unformat_acl_next_index, @@ -1929,18 +1974,18 @@ unformat_acl_next_node (unformat_input_t * input, va_list * args) } static uword -unformat_l2_next_node (unformat_input_t * input, va_list * args) +unformat_l2_input_next_node (unformat_input_t * input, va_list * args) { vnet_classify_main_t * cm = &vnet_classify_main; u32 * next_indexp = va_arg (*args, u32 *); u32 node_index; u32 next_index; - if (unformat (input, "node %U", unformat_vlib_node, + if (unformat (input, "input-node %U", unformat_vlib_node, cm->vlib_main, &node_index)) { next_index = vlib_node_add_next - (cm->vlib_main, l2_classify_node.index, node_index); + (cm->vlib_main, l2_input_classify_node.index, node_index); *next_indexp = next_index; return 1; @@ -1948,6 +1993,25 @@ unformat_l2_next_node (unformat_input_t * input, va_list * args) return 0; } +static uword +unformat_l2_output_next_node (unformat_input_t * input, va_list * args) +{ + vnet_classify_main_t * cm = &vnet_classify_main; + u32 * next_indexp = va_arg (*args, u32 *); + u32 node_index; + u32 next_index; + + if (unformat (input, "output-node %U", unformat_vlib_node, + cm->vlib_main, &node_index)) + { + next_index = vlib_node_add_next + (cm->vlib_main, l2_output_classify_node.index, node_index); + + *next_indexp = next_index; + return 1; + } + return 0; +} static clib_error_t * vnet_classify_init (vlib_main_t * vm) @@ -1964,7 +2028,13 @@ vnet_classify_init (vlib_main_t * vm) (unformat_ip_next_node); vnet_classify_register_unformat_l2_next_index_fn - (unformat_l2_next_node); + (unformat_l2_input_next_node); + + vnet_classify_register_unformat_l2_next_index_fn + (unformat_l2_input_next_node); + + vnet_classify_register_unformat_l2_next_index_fn + (unformat_l2_output_next_node); vnet_classify_register_unformat_acl_next_index_fn (unformat_acl_next_node); diff --git a/vnet/vnet/l2/l2_classify.h b/vnet/vnet/l2/l2_classify.h index f66e5209c88..184187ff879 100644 --- a/vnet/vnet/l2/l2_classify.h +++ b/vnet/vnet/l2/l2_classify.h @@ -13,8 +13,8 @@ * limitations under the License. */ -#ifndef __included_vnet_l2_classify_h__ -#define __included_vnet_l2_classify_h__ +#ifndef __included_vnet_l2_input_classify_h__ +#define __included_vnet_l2_input_classify_h__ #include <vlib/vlib.h> #include <vnet/vnet.h> @@ -26,6 +26,7 @@ #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 <vppinfra/error.h> #include <vppinfra/hash.h> @@ -35,47 +36,76 @@ typedef enum { - L2_CLASSIFY_NEXT_DROP, - L2_CLASSIFY_NEXT_ETHERNET_INPUT, - L2_CLASSIFY_NEXT_IP4_INPUT, - L2_CLASSIFY_NEXT_IP6_INPUT, - L2_CLASSIFY_NEXT_LI, - L2_CLASSIFY_N_NEXT, -} l2_classify_next_t; + L2_INPUT_CLASSIFY_NEXT_DROP, + L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT, + L2_INPUT_CLASSIFY_NEXT_IP4_INPUT, + L2_INPUT_CLASSIFY_NEXT_IP6_INPUT, + L2_INPUT_CLASSIFY_NEXT_LI, + L2_INPUT_CLASSIFY_N_NEXT, +} l2_input_classify_next_t; typedef enum { - L2_CLASSIFY_TABLE_IP4, - L2_CLASSIFY_TABLE_IP6, - L2_CLASSIFY_TABLE_OTHER, - L2_CLASSIFY_N_TABLES, -} l2_classify_table_id_t; + L2_INPUT_CLASSIFY_TABLE_IP4, + L2_INPUT_CLASSIFY_TABLE_IP6, + L2_INPUT_CLASSIFY_TABLE_OTHER, + L2_INPUT_CLASSIFY_N_TABLES, +} l2_input_classify_table_id_t; -typedef struct +typedef enum { + L2_OUTPUT_CLASSIFY_NEXT_DROP, + L2_OUTPUT_CLASSIFY_N_NEXT, +} l2_output_classify_next_t; +typedef enum +{ + L2_OUTPUT_CLASSIFY_TABLE_IP4, + L2_OUTPUT_CLASSIFY_TABLE_IP6, + L2_OUTPUT_CLASSIFY_TABLE_OTHER, + L2_OUTPUT_CLASSIFY_N_TABLES, +} l2_output_classify_table_id_t; + +typedef struct _l2_classify_main +{ /* Next nodes for each feature */ u32 feat_next_node_index[32]; /* Per-address-family classifier table vectors */ - u32 *classify_table_index_by_sw_if_index[L2_CLASSIFY_N_TABLES]; + u32 *classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_N_TABLES]; + + /* Next nodes for features and output interfaces */ + l2_output_next_nodes_st next_nodes; /* convenience variables */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; vnet_classify_main_t *vnet_classify_main; -} l2_classify_main_t; +} l2_input_classify_main_t; + +typedef struct _l2_classify_main l2_output_classify_main_t; + +extern l2_input_classify_main_t l2_input_classify_main; +extern vlib_node_registration_t l2_input_classify_node; + +extern l2_output_classify_main_t l2_output_classify_main; +extern vlib_node_registration_t l2_output_classify_node; -l2_classify_main_t l2_classify_main; +void vnet_l2_input_classify_enable_disable (u32 sw_if_index, + int enable_disable); -extern vlib_node_registration_t l2_classify_node; +int vnet_l2_input_classify_set_tables (u32 sw_if_index, u32 ip4_table_index, + u32 ip6_table_index, + u32 other_table_index); -void vnet_l2_classify_enable_disable (u32 sw_if_index, int enable_disable); +void vnet_l2_output_classify_enable_disable (u32 sw_if_index, + int enable_disable); -int vnet_l2_classify_set_tables (u32 sw_if_index, u32 ip4_table_index, - u32 ip6_table_index, u32 other_table_index); +int vnet_l2_output_classify_set_tables (u32 sw_if_index, u32 ip4_table_index, + u32 ip6_table_index, + u32 other_table_index); -#endif /* __included_vnet_l2_classify_h__ */ +#endif /* __included_vnet_l2_input_classify_h__ */ /* * fd.io coding-style-patch-verification: ON diff --git a/vnet/vnet/l2/l2_input.c b/vnet/vnet/l2/l2_input.c index f337b78d3e6..5c39b797fef 100644 --- a/vnet/vnet/l2/l2_input.c +++ b/vnet/vnet/l2/l2_input.c @@ -621,7 +621,8 @@ set_int_l2_mode (vlib_main_t * vm, vnet_main_t * vnet_main, u32 mode, u32 sw_if_ config->output_sw_if_index = xc_sw_if_index; /* Make sure last-chance drop is configured */ - config->feature_bitmap |= L2INPUT_FEAT_DROP | L2INPUT_FEAT_CLASSIFY; + config->feature_bitmap |= + L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY; /* Make sure bridging features are disabled */ config->feature_bitmap &= @@ -1030,7 +1031,7 @@ VLIB_CLI_COMMAND (show_l2_mode, static) = { #define foreach_l2_init_function \ _(feat_bitmap_drop_init) \ _(l2fib_init) \ -_(l2_classify_init) \ +_(l2_input_classify_init) \ _(l2bd_init) \ _(l2fwd_init) \ _(l2_inacl_init) \ diff --git a/vnet/vnet/l2/l2_input.h b/vnet/vnet/l2/l2_input.h index 3d8fc0afe5c..48597ce7b28 100644 --- a/vnet/vnet/l2/l2_input.h +++ b/vnet/vnet/l2/l2_input.h @@ -91,7 +91,6 @@ l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index) /* Mappings from feature ID to graph node name */ #define foreach_l2input_feat \ _(DROP, "feature-bitmap-drop") \ - _(CLASSIFY, "l2-classify") \ _(XCONNECT, "l2-output") \ _(IPIW, "feature-bitmap-drop") \ _(FLOOD, "l2-flood") \ @@ -113,7 +112,8 @@ l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index) _(QOS, "feature-bitmap-drop") \ _(CFM, "feature-bitmap-drop") \ _(SPAN, "feature-bitmap-drop") \ - _(POLICER_CLAS, "l2-policer-classify") + _(POLICER_CLAS, "l2-policer-classify") \ + _(INPUT_CLASSIFY, "l2-input-classify") /* Feature bitmap positions */ typedef enum diff --git a/vnet/vnet/l2/l2_classify.c b/vnet/vnet/l2/l2_input_classify.c index 737532de5ef..1b9f911cf24 100644 --- a/vnet/vnet/l2/l2_classify.c +++ b/vnet/vnet/l2/l2_input_classify.c @@ -19,28 +19,46 @@ #include <vnet/l2/l2_classify.h> #include <vnet/api_errno.h> +/** + * @file + * @brief L2 input classifier + * + * See also .../vnet/vnet/classify/vnet_classify.[ch] + */ + +/** + * @brief l2_input_classifier packet trace record + */ typedef struct { - /* per-pkt trace data */ + /** interface handle for the ith packet */ u32 sw_if_index; + /** graph arc index selected for this packet */ u32 next_index; + /** classifier table which provided the final result */ u32 table_index; + /** offset in classifier heap of the corresponding session */ u32 session_offset; -} l2_classify_trace_t; +} l2_input_classify_trace_t; +/** + * @brief vlib node runtime + */ typedef struct { + /** use-case independent main object pointer */ vnet_classify_main_t *vcm; - l2_classify_main_t *l2cm; -} l2_classify_runtime_t; + /** l2 input classifier main object pointer */ + l2_input_classify_main_t *l2cm; +} l2_input_classify_runtime_t; -/* packet trace format function */ +/** packet trace format function */ static u8 * -format_l2_classify_trace (u8 * s, va_list * args) +format_l2_input_classify_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 *); - l2_classify_trace_t *t = va_arg (*args, l2_classify_trace_t *); + l2_input_classify_trace_t *t = va_arg (*args, l2_input_classify_trace_t *); s = format (s, "l2-classify: sw_if_index %d, table %d, offset %x, next %d", t->sw_if_index, t->table_index, t->session_offset, @@ -48,11 +66,12 @@ format_l2_classify_trace (u8 * s, va_list * args) return s; } -l2_classify_main_t l2_classify_main; +/** l2 input classifier main data structure */ +l2_input_classify_main_t l2_input_classify_main; -vlib_node_registration_t l2_classify_node; +vlib_node_registration_t l2_input_classify_node; -#define foreach_l2_classify_error \ +#define foreach_l2_input_classify_error \ _(MISS, "Classify misses") \ _(HIT, "Classify hits") \ _(CHAIN_HIT, "Classify hits after chain walk") \ @@ -60,27 +79,78 @@ _(DROP, "L2 Classify Drops") typedef enum { -#define _(sym,str) L2_CLASSIFY_ERROR_##sym, - foreach_l2_classify_error +#define _(sym,str) L2_INPUT_CLASSIFY_ERROR_##sym, + foreach_l2_input_classify_error #undef _ - L2_CLASSIFY_N_ERROR, -} l2_classify_error_t; + L2_INPUT_CLASSIFY_N_ERROR, +} l2_input_classify_error_t; -static char *l2_classify_error_strings[] = { +static char *l2_input_classify_error_strings[] = { #define _(sym,string) string, - foreach_l2_classify_error + foreach_l2_input_classify_error #undef _ }; +/** + * @brief l2 input classifier node. + * @node l2-input-classify + * + * This is the l2 input classifier dispatch node + * + * @param vm vlib_main_t corresponding to the current thread. + * @param node vlib_node_runtime_t data for this node. + * @param frame vlib_frame_t whose contents should be dispatched. + * + * @par Graph mechanics: buffer metadata, next index usage + * + * @em Uses: + * - <code>(l2_input_classify_runtime_t *) + * rt->classify_table_index_by_sw_if_index</code> + * Head of the per-interface, perprotocol classifier table chain + * for a specific interface. ~0 => send pkts to the next + * feature in the L2 feature chain. + * - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> + * - Indicates the @c sw_if_index value of the interface that the + * packet was received on. + * - <code>vnet_buffer (b0)->l2.feature_bitmap</code> + * - Used to steer packets across l2 features enabled on the interface + * - <code>(vnet_classify_entry_t) e0->next_index</code> + * - Used to steer traffic when the classifier hits on a session + * - <code>(vnet_classify_entry_t) e0->advance</code> + * - Signed quantity applied via <code>vlib_buffer_advance</code> + * when the classifier hits on a session + * - <code>(vnet_classify_table_t) t0->miss_next_index</code> + * - Used to steer traffic when the classifier misses + * + * @em Sets: + * - <code>vnet_buffer (b0)->l2_classify.table_index</code> + * - Classifier table index of the first classifier table in + * the classifier table chain + * - <code>vnet_buffer (b0)->l2_classify.hash</code> + * - Bounded-index extensible hash corresponding to the + * masked fields in the current packet + * - <code>vnet_buffer (b0)->l2.feature_bitmap</code> + * - Used to steer packets across l2 features enabled on the interface + * - <code>vnet_buffer (b0)->l2_classify.opaque_index</code> + * - Copied from the classifier session object upon classifier hit + * + * @em Counters: + * - <code>L2_INPUT_CLASSIFY_ERROR_MISS</code> Classifier misses + * - <code>L2_INPUT_CLASSIFY_ERROR_HIT</code> Classifier hits + * - <code>L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT</code> + * Classifier hits in other than the first table + */ + static uword -l2_classify_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +l2_input_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, *to_next; - l2_classify_next_t next_index; - l2_classify_main_t *cm = &l2_classify_main; + l2_input_classify_next_t next_index; + l2_input_classify_main_t *cm = &l2_input_classify_main; vnet_classify_main_t *vcm = cm->vnet_classify_main; - l2_classify_runtime_t *rt = (l2_classify_runtime_t *) node->runtime_data; + l2_input_classify_runtime_t *rt = + (l2_input_classify_runtime_t *) node->runtime_data; u32 feature_bitmap; u32 hits = 0; u32 misses = 0; @@ -142,14 +212,14 @@ l2_classify_node_fn (vlib_main_t * vm, type1 = clib_net_to_host_u16 (h1->type); type_index0 = (type0 == ETHERNET_TYPE_IP4) - ? L2_CLASSIFY_TABLE_IP4 : L2_CLASSIFY_TABLE_OTHER; + ? L2_INPUT_CLASSIFY_TABLE_IP4 : L2_INPUT_CLASSIFY_TABLE_OTHER; type_index0 = (type0 == ETHERNET_TYPE_IP6) - ? L2_CLASSIFY_TABLE_IP6 : type_index0; + ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0; type_index1 = (type1 == ETHERNET_TYPE_IP4) - ? L2_CLASSIFY_TABLE_IP4 : L2_CLASSIFY_TABLE_OTHER; + ? L2_INPUT_CLASSIFY_TABLE_IP4 : L2_INPUT_CLASSIFY_TABLE_OTHER; type_index1 = (type1 == ETHERNET_TYPE_IP6) - ? L2_CLASSIFY_TABLE_IP6 : type_index1; + ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index1; vnet_buffer (b0)->l2_classify.table_index = table_index0 = @@ -206,9 +276,9 @@ l2_classify_node_fn (vlib_main_t * vm, type0 = clib_net_to_host_u16 (h0->type); type_index0 = (type0 == ETHERNET_TYPE_IP4) - ? L2_CLASSIFY_TABLE_IP4 : L2_CLASSIFY_TABLE_OTHER; + ? L2_INPUT_CLASSIFY_TABLE_IP4 : L2_INPUT_CLASSIFY_TABLE_OTHER; type_index0 = (type0 == ETHERNET_TYPE_IP6) - ? L2_CLASSIFY_TABLE_IP6 : type_index0; + ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0; vnet_buffer (b0)->l2_classify.table_index = table_index0 = rt->l2cm->classify_table_index_by_sw_if_index @@ -241,7 +311,7 @@ l2_classify_node_fn (vlib_main_t * vm, { u32 bi0; vlib_buffer_t *b0; - u32 next0 = L2_CLASSIFY_NEXT_ETHERNET_INPUT; + u32 next0 = ~0; /* next l2 input feature, please... */ ethernet_header_t *h0; u32 table_index0; u64 hash0; @@ -283,6 +353,13 @@ l2_classify_node_fn (vlib_main_t * vm, e0 = 0; vnet_buffer (b0)->l2_classify.opaque_index = ~0; + /* Remove ourself from the feature bitmap */ + feature_bitmap = vnet_buffer (b0)->l2.feature_bitmap + & ~L2INPUT_FEAT_INPUT_CLASSIFY; + + /* save for next feature graph nodes */ + vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap; + if (PREDICT_TRUE (table_index0 != ~0)) { hash0 = vnet_buffer (b0)->l2_classify.hash; @@ -332,18 +409,10 @@ l2_classify_node_fn (vlib_main_t * vm, } if (PREDICT_FALSE (next0 == 0)) - b0->error = node->errors[L2_CLASSIFY_ERROR_DROP]; + b0->error = node->errors[L2_INPUT_CLASSIFY_ERROR_DROP]; - if (PREDICT_FALSE (next0 == ~0)) + if (PREDICT_TRUE (next0 == ~0)) { - - // Remove ourself from the feature bitmap - feature_bitmap = vnet_buffer (b0)->l2.feature_bitmap - & ~L2INPUT_FEAT_CLASSIFY; - - // 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 (cm->feat_next_node_index, @@ -353,7 +422,7 @@ l2_classify_node_fn (vlib_main_t * vm, if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) { - l2_classify_trace_t *t = + l2_input_classify_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; t->table_index = table_index0; @@ -371,47 +440,51 @@ l2_classify_node_fn (vlib_main_t * vm, } vlib_node_increment_counter (vm, node->node_index, - L2_CLASSIFY_ERROR_MISS, misses); + L2_INPUT_CLASSIFY_ERROR_MISS, misses); vlib_node_increment_counter (vm, node->node_index, - L2_CLASSIFY_ERROR_HIT, hits); + L2_INPUT_CLASSIFY_ERROR_HIT, hits); vlib_node_increment_counter (vm, node->node_index, - L2_CLASSIFY_ERROR_CHAIN_HIT, chain_hits); + L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT, chain_hits); return frame->n_vectors; } /* *INDENT-OFF* */ -VLIB_REGISTER_NODE (l2_classify_node) = { - .function = l2_classify_node_fn, - .name = "l2-classify", +VLIB_REGISTER_NODE (l2_input_classify_node) = { + .function = l2_input_classify_node_fn, + .name = "l2-input-classify", .vector_size = sizeof (u32), - .format_trace = format_l2_classify_trace, + .format_trace = format_l2_input_classify_trace, .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(l2_classify_error_strings), - .error_strings = l2_classify_error_strings, + .n_errors = ARRAY_LEN(l2_input_classify_error_strings), + .error_strings = l2_input_classify_error_strings, - .runtime_data_bytes = sizeof (l2_classify_runtime_t), + .runtime_data_bytes = sizeof (l2_input_classify_runtime_t), - .n_next_nodes = L2_CLASSIFY_N_NEXT, + .n_next_nodes = L2_INPUT_CLASSIFY_N_NEXT, /* edit / add dispositions here */ .next_nodes = { - [L2_CLASSIFY_NEXT_DROP] = "error-drop", - [L2_CLASSIFY_NEXT_ETHERNET_INPUT] = "ethernet-input-not-l2", - [L2_CLASSIFY_NEXT_IP4_INPUT] = "ip4-input", - [L2_CLASSIFY_NEXT_IP6_INPUT] = "ip6-input", - [L2_CLASSIFY_NEXT_LI] = "li-hit", + [L2_INPUT_CLASSIFY_NEXT_DROP] = "error-drop", + [L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT] = "ethernet-input-not-l2", + [L2_INPUT_CLASSIFY_NEXT_IP4_INPUT] = "ip4-input", + [L2_INPUT_CLASSIFY_NEXT_IP6_INPUT] = "ip6-input", + [L2_INPUT_CLASSIFY_NEXT_LI] = "li-hit", }, }; /* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (l2_classify_node, l2_classify_node_fn) - clib_error_t *l2_classify_init (vlib_main_t * vm) +VLIB_NODE_FUNCTION_MULTIARCH (l2_input_classify_node, + l2_input_classify_node_fn); + +/** l2 input classsifier feature initialization */ +clib_error_t * +l2_input_classify_init (vlib_main_t * vm) { - l2_classify_main_t *cm = &l2_classify_main; - l2_classify_runtime_t *rt; + l2_input_classify_main_t *cm = &l2_input_classify_main; + l2_input_classify_runtime_t *rt; - rt = vlib_node_get_runtime_data (vm, l2_classify_node.index); + rt = vlib_node_get_runtime_data (vm, l2_input_classify_node.index); cm->vlib_main = vm; cm->vnet_main = vnet_get_main (); @@ -419,7 +492,7 @@ VLIB_NODE_FUNCTION_MULTIARCH (l2_classify_node, l2_classify_node_fn) /* Initialize the feature next-node indexes */ feat_bitmap_init_next_nodes (vm, - l2_classify_node.index, + l2_input_classify_node.index, L2INPUT_N_FEAT, l2input_get_feat_names (), cm->feat_next_node_index); @@ -429,27 +502,34 @@ VLIB_NODE_FUNCTION_MULTIARCH (l2_classify_node, l2_classify_node_fn) return 0; } -VLIB_INIT_FUNCTION (l2_classify_init); +VLIB_INIT_FUNCTION (l2_input_classify_init); +/** enable/disable l2 input classification on a specific interface */ void -vnet_l2_classify_enable_disable (u32 sw_if_index, int enable_disable) +vnet_l2_input_classify_enable_disable (u32 sw_if_index, int enable_disable) { - vlib_main_t *vm = vlib_get_main (); - vnet_main_t *vnm = vnet_get_main (); - - if (enable_disable) - set_int_l2_mode (vm, vnm, MODE_L2_CLASSIFY, sw_if_index, 0, 0, 0, 0); - else - set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0); + l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_INPUT_CLASSIFY, + (u32) enable_disable); } +/** @brief Set l2 per-protocol, per-interface input classification tables + * + * @param sw_if_index interface handle + * @param ip4_table_index ip4 classification table index, or ~0 + * @param ip6_table_index ip6 classification table index, or ~0 + * @param other_table_index non-ip4, non-ip6 classification table index, + * or ~0 + * @returns 0 on success, VNET_API_ERROR_NO_SUCH_TABLE, TABLE2, TABLE3 + * if the indicated (non-~0) table does not exist. + */ + int -vnet_l2_classify_set_tables (u32 sw_if_index, - u32 ip4_table_index, - u32 ip6_table_index, u32 other_table_index) +vnet_l2_input_classify_set_tables (u32 sw_if_index, + u32 ip4_table_index, + u32 ip6_table_index, u32 other_table_index) { - l2_classify_main_t *cm = &l2_classify_main; + l2_input_classify_main_t *cm = &l2_input_classify_main; vnet_classify_main_t *vcm = cm->vnet_classify_main; /* Assume that we've validated sw_if_index in the API layer */ @@ -467,33 +547,33 @@ vnet_l2_classify_set_tables (u32 sw_if_index, return VNET_API_ERROR_NO_SUCH_TABLE3; vec_validate - (cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_IP4], + (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4], sw_if_index); vec_validate - (cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_IP6], + (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6], sw_if_index); vec_validate - (cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_OTHER], + (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER], sw_if_index); - cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_IP4] + cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4] [sw_if_index] = ip4_table_index; - cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_IP6] + cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6] [sw_if_index] = ip6_table_index; - cm->classify_table_index_by_sw_if_index[L2_CLASSIFY_TABLE_OTHER] + cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER] [sw_if_index] = other_table_index; return 0; } static clib_error_t * -int_l2_classify_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +int_l2_input_classify_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); u32 sw_if_index = ~0; @@ -525,38 +605,48 @@ int_l2_classify_command_fn (vlib_main_t * vm, && other_table_index == ~0) { vlib_cli_output (vm, "L2 classification disabled"); - vnet_l2_classify_enable_disable (sw_if_index, 0 /* enable */ ); + vnet_l2_input_classify_enable_disable (sw_if_index, 0 /* enable */ ); return 0; } - rv = vnet_l2_classify_set_tables (sw_if_index, ip4_table_index, - ip6_table_index, other_table_index); + rv = vnet_l2_input_classify_set_tables (sw_if_index, ip4_table_index, + ip6_table_index, other_table_index); switch (rv) { case 0: - vnet_l2_classify_enable_disable (sw_if_index, 1 /* enable */ ); + vnet_l2_input_classify_enable_disable (sw_if_index, 1 /* enable */ ); break; default: - return clib_error_return (0, "vnet_l2_classify_set_tables: %d", rv); + return clib_error_return (0, "vnet_l2_input_classify_set_tables: %d", + rv); break; } return 0; } +/*? + * Configure l2 input classification. + * + * @cliexpar + * @cliexstart {set interface l2 input classify intfc <interface-name> + * [ip4-table <index>] + * [ip6-table <index>] + * [other-table <index>]} + * @cliexend + ?*/ + /* *INDENT-OFF* */ -VLIB_CLI_COMMAND (int_l2_classify_cli, static) = { - .path = "set interface l2 classify", +VLIB_CLI_COMMAND (int_l2_input_classify_cli, static) = { + .path = "set interface l2 input classify", .short_help = - "set interface l2 classify intfc <int> [ip4-table <n>]\n" + "set interface l2 input classify intfc <int> [ip4-table <n>]\n" " [ip6-table <n>] [other-table <n>]", - .function = int_l2_classify_command_fn, + .function = int_l2_input_classify_command_fn, }; /* *INDENT-ON* */ - - /* * fd.io coding-style-patch-verification: ON * diff --git a/vnet/vnet/l2/l2_output.h b/vnet/vnet/l2/l2_output.h index e29d32d4222..0aabbc0505a 100644 --- a/vnet/vnet/l2/l2_output.h +++ b/vnet/vnet/l2/l2_output.h @@ -98,6 +98,7 @@ l2output_main_t l2output_main; _(IPIW, "feature-bitmap-drop") \ _(STP_BLOCKED, "feature-bitmap-drop") \ _(LINESTATUS_DOWN, "feature-bitmap-drop") \ + _(OUTPUT_CLASSIFY, "l2-output-classify") \ _(XCRW, "l2-xcrw") /* Feature bitmap positions */ diff --git a/vnet/vnet/l2/l2_output_classify.c b/vnet/vnet/l2/l2_output_classify.c new file mode 100644 index 00000000000..1cb8b8507bf --- /dev/null +++ b/vnet/vnet/l2/l2_output_classify.c @@ -0,0 +1,661 @@ +/* + * 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. + */ +/* + * l2_classify.c + */ + +#include <vnet/l2/l2_classify.h> +#include <vnet/api_errno.h> + +/** + * @file + * @brief L2 input classifier + * + * See also .../vnet/vnet/classify/vnet_classify.[ch] + */ + +typedef struct +{ + /** interface handle for the ith packet */ + u32 sw_if_index; + /** graph arc index selected for this packet */ + u32 next_index; + /** classifier table which provided the final result */ + u32 table_index; + /** offset in classifier heap of the corresponding session */ + u32 session_offset; +} l2_output_classify_trace_t; + +typedef struct +{ + /** use-case independent main object pointer */ + vnet_classify_main_t *vcm; + /** l2 input classifier main object pointer */ + l2_output_classify_main_t *l2cm; +} l2_output_classify_runtime_t; + +/** packet trace format function */ +static u8 * +format_l2_output_classify_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 *); + l2_output_classify_trace_t *t = + va_arg (*args, l2_output_classify_trace_t *); + + s = format (s, "l2-classify: sw_if_index %d, table %d, offset %x, next %d", + t->sw_if_index, t->table_index, t->session_offset, + t->next_index); + return s; +} + +/** l2 output classifier main data structure */ +l2_output_classify_main_t l2_output_classify_main; + +vlib_node_registration_t l2_output_classify_node; + +#define foreach_l2_output_classify_error \ +_(MISS, "Classify misses") \ +_(HIT, "Classify hits") \ +_(CHAIN_HIT, "Classify hits after chain walk") \ +_(DROP, "L2 Classify Drops") + +typedef enum +{ +#define _(sym,str) L2_OUTPUT_CLASSIFY_ERROR_##sym, + foreach_l2_output_classify_error +#undef _ + L2_OUTPUT_CLASSIFY_N_ERROR, +} l2_output_classify_error_t; + +static char *l2_output_classify_error_strings[] = { +#define _(sym,string) string, + foreach_l2_output_classify_error +#undef _ +}; + +/** + * @brief l2 output classifier node. + * @node l2-output-classify + * + * This is the l2 output classifier dispatch node + * + * @param vm vlib_main_t corresponding to the current thread. + * @param node vlib_node_runtime_t data for this node. + * @param frame vlib_frame_t whose contents should be dispatched. + * + * @par Graph mechanics: buffer metadata, next index usage + * + * @em Uses: + * - <code>(l2_input_classify_runtime_t *) + * rt->classify_table_index_by_sw_if_index</code> + * Head of the per-interface, perprotocol classifier table chain + * for a specific interface. ~0 => send pkts to the next + * feature in the L2 feature chain. + * - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> + * - Indicates the @c sw_if_index value of the interface that the + * packet was received on. + * - <code>vnet_buffer (b0)->l2.feature_bitmap</code> + * - Used to steer packets across l2 features enabled on the interface + * - <code>(vnet_classify_entry_t) e0->next_index</code> + * - Used to steer traffic when the classifier hits on a session + * - <code>(vnet_classify_entry_t) e0->advance</code> + * - Signed quantity applied via <code>vlib_buffer_advance</code> + * when the classifier hits on a session + * - <code>(vnet_classify_table_t) t0->miss_next_index</code> + * - Used to steer traffic when the classifier misses + * + * @em Sets: + * - <code>vnet_buffer (b0)->l2_classify.table_index</code> + * - Classifier table index of the first classifier table in + * the classifier table chain + * - <code>vnet_buffer (b0)->l2_classify.hash</code> + * - Bounded-index extensible hash corresponding to the + * masked fields in the current packet + * - <code>vnet_buffer (b0)->l2.feature_bitmap</code> + * - Used to steer packets across l2 features enabled on the interface + * - <code>vnet_buffer (b0)->l2_classify.opaque_index</code> + * - Copied from the classifier session object upon classifier hit + * + * @em Counters: + * - <code>L2_OUTPUT_CLASSIFY_ERROR_MISS</code> Classifier misses + * - <code>L2_OUTPUT_CLASSIFY_ERROR_HIT</code> Classifier hits + * - <code>L2_OUTPUT_CLASSIFY_ERROR_CHAIN_HIT</code> + * Classifier hits in other than the first table + */ + +static uword +l2_output_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + u32 n_left_from, *from, *to_next; + l2_output_classify_next_t next_index; + l2_output_classify_main_t *cm = &l2_output_classify_main; + vnet_classify_main_t *vcm = cm->vnet_classify_main; + l2_output_classify_runtime_t *rt = + (l2_output_classify_runtime_t *) node->runtime_data; + u32 feature_bitmap0; + u32 hits = 0; + u32 misses = 0; + u32 chain_hits = 0; + f64 now; + u32 n_next_nodes; + u32 cached_sw_if_index = (u32) ~ 0; + u32 cached_next_index = (u32) ~ 0; + u32 sw_if_index0; + + n_next_nodes = node->n_next_nodes; + + now = vlib_time_now (vm); + + n_left_from = frame->n_vectors; + from = vlib_frame_vector_args (frame); + + /* First pass: compute hash */ + + while (n_left_from > 2) + { + vlib_buffer_t *b0, *b1; + u32 bi0, bi1; + ethernet_header_t *h0, *h1; + u32 sw_if_index0, sw_if_index1; + u16 type0, type1; + int type_index0, type_index1; + vnet_classify_table_t *t0, *t1; + u32 table_index0, table_index1; + u64 hash0, hash1; + + + /* prefetch next iteration */ + { + vlib_buffer_t *p1, *p2; + + p1 = vlib_get_buffer (vm, from[1]); + p2 = vlib_get_buffer (vm, from[2]); + + vlib_prefetch_buffer_header (p1, STORE); + CLIB_PREFETCH (p1->data, CLIB_CACHE_LINE_BYTES, STORE); + vlib_prefetch_buffer_header (p2, STORE); + CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE); + } + + bi0 = from[0]; + b0 = vlib_get_buffer (vm, bi0); + h0 = vlib_buffer_get_current (b0); + + bi1 = from[1]; + b1 = vlib_get_buffer (vm, bi1); + h1 = vlib_buffer_get_current (b1); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + vnet_buffer (b0)->l2_classify.table_index = ~0; + + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + vnet_buffer (b1)->l2_classify.table_index = ~0; + + /* Select classifier table based on ethertype */ + type0 = clib_net_to_host_u16 (h0->type); + type1 = clib_net_to_host_u16 (h1->type); + + type_index0 = (type0 == ETHERNET_TYPE_IP4) + ? L2_OUTPUT_CLASSIFY_TABLE_IP4 : L2_OUTPUT_CLASSIFY_TABLE_OTHER; + type_index0 = (type0 == ETHERNET_TYPE_IP6) + ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index0; + + type_index1 = (type1 == ETHERNET_TYPE_IP4) + ? L2_OUTPUT_CLASSIFY_TABLE_IP4 : L2_OUTPUT_CLASSIFY_TABLE_OTHER; + type_index1 = (type1 == ETHERNET_TYPE_IP6) + ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index1; + + vnet_buffer (b0)->l2_classify.table_index = + table_index0 = + rt->l2cm->classify_table_index_by_sw_if_index + [type_index0][sw_if_index0]; + + if (table_index0 != ~0) + { + t0 = pool_elt_at_index (vcm->tables, table_index0); + + vnet_buffer (b0)->l2_classify.hash = hash0 = + vnet_classify_hash_packet (t0, (u8 *) h0); + vnet_classify_prefetch_bucket (t0, hash0); + } + + vnet_buffer (b1)->l2_classify.table_index = + table_index1 = + rt->l2cm->classify_table_index_by_sw_if_index + [type_index1][sw_if_index1]; + + if (table_index1 != ~0) + { + t1 = pool_elt_at_index (vcm->tables, table_index1); + + vnet_buffer (b1)->l2_classify.hash = hash1 = + vnet_classify_hash_packet (t1, (u8 *) h1); + vnet_classify_prefetch_bucket (t1, hash1); + } + + from += 2; + n_left_from -= 2; + } + + while (n_left_from > 0) + { + vlib_buffer_t *b0; + u32 bi0; + ethernet_header_t *h0; + u16 type0; + u32 type_index0; + vnet_classify_table_t *t0; + u32 table_index0; + u64 hash0; + + bi0 = from[0]; + b0 = vlib_get_buffer (vm, bi0); + h0 = vlib_buffer_get_current (b0); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + vnet_buffer (b0)->l2_classify.table_index = ~0; + + /* Select classifier table based on ethertype */ + type0 = clib_net_to_host_u16 (h0->type); + + type_index0 = (type0 == ETHERNET_TYPE_IP4) + ? L2_OUTPUT_CLASSIFY_TABLE_IP4 : L2_OUTPUT_CLASSIFY_TABLE_OTHER; + type_index0 = (type0 == ETHERNET_TYPE_IP6) + ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index0; + + vnet_buffer (b0)->l2_classify.table_index = + table_index0 = rt->l2cm->classify_table_index_by_sw_if_index + [type_index0][sw_if_index0]; + + if (table_index0 != ~0) + { + t0 = pool_elt_at_index (vcm->tables, table_index0); + + vnet_buffer (b0)->l2_classify.hash = hash0 = + vnet_classify_hash_packet (t0, (u8 *) h0); + vnet_classify_prefetch_bucket (t0, hash0); + } + from++; + n_left_from--; + } + + next_index = node->cached_next_index; + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + /* Not enough load/store slots to dual loop... */ + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + u32 next0 = ~0; + ethernet_header_t *h0; + u32 table_index0; + u64 hash0; + vnet_classify_table_t *t0; + vnet_classify_entry_t *e0; + + if (PREDICT_TRUE (n_left_from > 2)) + { + vlib_buffer_t *p2 = vlib_get_buffer (vm, from[2]); + u64 phash2; + u32 table_index2; + vnet_classify_table_t *tp2; + + /* + * Prefetch table entry two ahead. Buffer / data + * were prefetched above... + */ + table_index2 = vnet_buffer (p2)->l2_classify.table_index; + + if (PREDICT_TRUE (table_index2 != ~0)) + { + tp2 = pool_elt_at_index (vcm->tables, table_index2); + phash2 = vnet_buffer (p2)->l2_classify.hash; + vnet_classify_prefetch_entry (tp2, phash2); + } + } + + /* 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); + h0 = vlib_buffer_get_current (b0); + table_index0 = vnet_buffer (b0)->l2_classify.table_index; + e0 = 0; + vnet_buffer (b0)->l2_classify.opaque_index = ~0; + /* Remove ourself from the feature bitmap */ + feature_bitmap0 = vnet_buffer (b0)->l2.feature_bitmap + & ~L2OUTPUT_FEAT_OUTPUT_CLASSIFY; + + /* save for next feature graph nodes */ + vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap0; + + if (PREDICT_TRUE (table_index0 != ~0)) + { + hash0 = vnet_buffer (b0)->l2_classify.hash; + t0 = pool_elt_at_index (vcm->tables, table_index0); + + e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now); + if (e0) + { + vnet_buffer (b0)->l2_classify.opaque_index + = e0->opaque_index; + vlib_buffer_advance (b0, e0->advance); + next0 = (e0->next_index < n_next_nodes) ? + e0->next_index : next0; + hits++; + } + else + { + while (1) + { + if (t0->next_table_index != ~0) + t0 = pool_elt_at_index (vcm->tables, + t0->next_table_index); + else + { + next0 = (t0->miss_next_index < n_next_nodes) ? + t0->miss_next_index : next0; + misses++; + break; + } + + hash0 = vnet_classify_hash_packet (t0, (u8 *) h0); + e0 = + vnet_classify_find_entry (t0, (u8 *) h0, hash0, now); + if (e0) + { + vnet_buffer (b0)->l2_classify.opaque_index + = e0->opaque_index; + vlib_buffer_advance (b0, e0->advance); + next0 = (e0->next_index < n_next_nodes) ? + e0->next_index : next0; + hits++; + chain_hits++; + break; + } + } + } + } + + if (PREDICT_FALSE (next0 == 0)) + b0->error = node->errors[L2_OUTPUT_CLASSIFY_ERROR_DROP]; + + if (PREDICT_FALSE (next0 == ~0)) + { + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + + /* Determine next node */ + l2_output_dispatch (cm->vlib_main, + cm->vnet_main, + node, + l2_output_classify_node.index, + &cached_sw_if_index, + &cached_next_index, + &cm->next_nodes, + b0, sw_if_index0, feature_bitmap0, &next0); + } + + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + l2_output_classify_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + t->table_index = table_index0; + t->next_index = next0; + t->session_offset = e0 ? vnet_classify_get_offset (t0, e0) : 0; + } + + /* 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); + } + + vlib_node_increment_counter (vm, node->node_index, + L2_OUTPUT_CLASSIFY_ERROR_MISS, misses); + vlib_node_increment_counter (vm, node->node_index, + L2_OUTPUT_CLASSIFY_ERROR_HIT, hits); + vlib_node_increment_counter (vm, node->node_index, + L2_OUTPUT_CLASSIFY_ERROR_CHAIN_HIT, + chain_hits); + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (l2_output_classify_node) = { + .function = l2_output_classify_node_fn, + .name = "l2-output-classify", + .vector_size = sizeof (u32), + .format_trace = format_l2_output_classify_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(l2_output_classify_error_strings), + .error_strings = l2_output_classify_error_strings, + + .runtime_data_bytes = sizeof (l2_output_classify_runtime_t), + + .n_next_nodes = L2_OUTPUT_CLASSIFY_N_NEXT, + + /* edit / add dispositions here */ + .next_nodes = { + [L2_OUTPUT_CLASSIFY_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (l2_output_classify_node, + l2_output_classify_node_fn); + +/** l2 output classsifier feature initialization */ +clib_error_t * +l2_output_classify_init (vlib_main_t * vm) +{ + l2_output_classify_main_t *cm = &l2_output_classify_main; + l2_output_classify_runtime_t *rt; + + rt = vlib_node_get_runtime_data (vm, l2_output_classify_node.index); + + cm->vlib_main = vm; + cm->vnet_main = vnet_get_main (); + cm->vnet_classify_main = &vnet_classify_main; + + /* Initialize the feature next-node indexes */ + feat_bitmap_init_next_nodes (vm, + l2_output_classify_node.index, + L2OUTPUT_N_FEAT, + l2output_get_feat_names (), + cm->feat_next_node_index); + rt->l2cm = cm; + rt->vcm = cm->vnet_classify_main; + + /* Initialize the output node mapping table */ + l2output_init_output_node_vec (&cm->next_nodes.output_node_index_vec); + + return 0; +} + +VLIB_INIT_FUNCTION (l2_output_classify_init); + +/** enable/disable l2 input classification on a specific interface */ +void +vnet_l2_output_classify_enable_disable (u32 sw_if_index, int enable_disable) +{ + + l2output_intf_bitmap_enable (sw_if_index, L2OUTPUT_FEAT_OUTPUT_CLASSIFY, + (u32) enable_disable); +} + +/** @brief Set l2 per-protocol, per-interface output classification tables + * + * @param sw_if_index interface handle + * @param ip4_table_index ip4 classification table index, or ~0 + * @param ip6_table_index ip6 classification table index, or ~0 + * @param other_table_index non-ip4, non-ip6 classification table index, + * or ~0 + * @returns 0 on success, VNET_API_ERROR_NO_SUCH_TABLE, TABLE2, TABLE3 + * if the indicated (non-~0) table does not exist. + */ + +int +vnet_l2_output_classify_set_tables (u32 sw_if_index, + u32 ip4_table_index, + u32 ip6_table_index, + u32 other_table_index) +{ + l2_output_classify_main_t *cm = &l2_output_classify_main; + vnet_classify_main_t *vcm = cm->vnet_classify_main; + + /* Assume that we've validated sw_if_index in the API layer */ + + if (ip4_table_index != ~0 && + pool_is_free_index (vcm->tables, ip4_table_index)) + return VNET_API_ERROR_NO_SUCH_TABLE; + + if (ip6_table_index != ~0 && + pool_is_free_index (vcm->tables, ip6_table_index)) + return VNET_API_ERROR_NO_SUCH_TABLE2; + + if (other_table_index != ~0 && + pool_is_free_index (vcm->tables, other_table_index)) + return VNET_API_ERROR_NO_SUCH_TABLE3; + + vec_validate + (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP4], + sw_if_index); + + vec_validate + (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP6], + sw_if_index); + + vec_validate + (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_OTHER], + sw_if_index); + + cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP4] + [sw_if_index] = ip4_table_index; + + cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP6] + [sw_if_index] = ip6_table_index; + + cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_OTHER] + [sw_if_index] = other_table_index; + + return 0; +} + +static clib_error_t * +int_l2_output_classify_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + u32 sw_if_index = ~0; + u32 ip4_table_index = ~0; + u32 ip6_table_index = ~0; + u32 other_table_index = ~0; + int rv; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "intfc %U", unformat_vnet_sw_interface, + vnm, &sw_if_index)) + ; + else if (unformat (input, "ip4-table %d", &ip4_table_index)) + ; + else if (unformat (input, "ip6-table %d", &ip6_table_index)) + ; + else if (unformat (input, "other-table %d", &other_table_index)) + ; + else + break; + } + + if (sw_if_index == ~0) + return clib_error_return (0, "interface must be specified"); + + + if (ip4_table_index == ~0 && ip6_table_index == ~0 + && other_table_index == ~0) + { + vlib_cli_output (vm, "L2 classification disabled"); + vnet_l2_output_classify_enable_disable (sw_if_index, 0 /* enable */ ); + return 0; + } + + rv = vnet_l2_output_classify_set_tables (sw_if_index, ip4_table_index, + ip6_table_index, + other_table_index); + switch (rv) + { + case 0: + vnet_l2_output_classify_enable_disable (sw_if_index, 1 /* enable */ ); + break; + + default: + return clib_error_return (0, "vnet_l2_output_classify_set_tables: %d", + rv); + break; + } + + return 0; +} + +/*? + * Configure l2 input classification. + * + * @cliexpar + * @cliexstart {set interface l2 output classify intfc <interface-name> + * [ip4-table <index>] + * [ip6-table <index>] + * [other-table <index>]} + * @cliexend + ?*/ + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (int_l2_output_classify_cli, static) = { + .path = "set interface l2 output classify", + .short_help = + "set interface l2 output classify intfc <int> [ip4-table <n>]\n" + " [ip6-table <n>] [other-table <n>]", + .function = int_l2_output_classify_command_fn, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |