* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
+#include <stdint.h>
+
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/policer/policer.h>
+#include <vnet/ip/ip.h>
+#include <vnet/classify/policer_classify.h>
+#include <vnet/classify/vnet_classify.h>
+
+#define IP4_NON_DSCP_BITS 0x03
+#define IP4_DSCP_SHIFT 2
+#define IP6_NON_DSCP_BITS 0xf03fffff
+#define IP6_DSCP_SHIFT 22
/* Dispatch functions meant to be instantiated elsewhere */
-typedef struct {
+typedef struct
+{
u32 next_index;
u32 sw_if_index;
u32 policer_index;
} vnet_policer_trace_t;
/* packet trace format function */
-static u8 * format_policer_trace (u8 * s, va_list * args)
+static u8 *
+format_policer_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 *);
- vnet_policer_trace_t * t = va_arg (*args, vnet_policer_trace_t *);
-
+ vnet_policer_trace_t *t = va_arg (*args, vnet_policer_trace_t *);
+
s = format (s, "VNET_POLICER: sw_if_index %d policer_index %d next %d",
- t->sw_if_index, t->policer_index, t->next_index);
+ t->sw_if_index, t->policer_index, t->next_index);
return s;
}
_(TRANSMIT, "Packets Transmitted") \
_(DROP, "Packets Dropped")
-typedef enum {
+typedef enum
+{
#define _(sym,str) VNET_POLICER_ERROR_##sym,
foreach_vnet_policer_error
#undef _
- VNET_POLICER_N_ERROR,
+ VNET_POLICER_N_ERROR,
} vnet_policer_error_t;
-static char * vnet_policer_error_strings[] = {
+static char *vnet_policer_error_strings[] = {
#define _(sym,string) string,
foreach_vnet_policer_error
#undef _
};
-static inline
-uword vnet_policer_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- vnet_policer_index_t which)
+static_always_inline void
+vnet_policer_mark (vlib_buffer_t * b, u8 dscp)
+{
+ ethernet_header_t *eh;
+ ip4_header_t *ip4h;
+ ip6_header_t *ip6h;
+ u16 type;
+
+ eh = (ethernet_header_t *) b->data;
+ type = clib_net_to_host_u16 (eh->type);
+
+ if (PREDICT_TRUE (type == ETHERNET_TYPE_IP4))
+ {
+ ip4h = (ip4_header_t *) & (b->data[sizeof (ethernet_header_t)]);;
+ ip4h->tos &= IP4_NON_DSCP_BITS;
+ ip4h->tos |= dscp << IP4_DSCP_SHIFT;
+ ip4h->checksum = ip4_header_checksum (ip4h);
+ }
+ else
+ {
+ if (PREDICT_TRUE (type == ETHERNET_TYPE_IP6))
+ {
+ ip6h = (ip6_header_t *) & (b->data[sizeof (ethernet_header_t)]);
+ ip6h->ip_version_traffic_class_and_flow_label &=
+ clib_host_to_net_u32 (IP6_NON_DSCP_BITS);
+ ip6h->ip_version_traffic_class_and_flow_label |=
+ clib_host_to_net_u32 (dscp << IP6_DSCP_SHIFT);
+ }
+ }
+}
+
+static_always_inline
+ u8 vnet_policer_police (vlib_main_t * vm,
+ vlib_buffer_t * b,
+ u32 policer_index,
+ u64 time_in_policer_periods,
+ policer_result_e packet_color)
{
- u32 n_left_from, * from, * to_next;
+ u8 act;
+ u32 len;
+ u32 col;
+ policer_read_response_type_st *pol;
+ vnet_policer_main_t *pm = &vnet_policer_main;
+
+ len = vlib_buffer_length_in_chain (vm, b);
+ pol = &pm->policers[policer_index];
+ col = vnet_police_packet (pol, len, packet_color, time_in_policer_periods);
+ act = pol->action[col];
+ if (PREDICT_TRUE (act == SSE2_QOS_ACTION_MARK_AND_TRANSMIT))
+ vnet_policer_mark (b, pol->mark_dscp[col]);
+
+ return act;
+}
+
+static inline uword
+vnet_policer_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, vnet_policer_index_t which)
+{
+ u32 n_left_from, *from, *to_next;
vnet_policer_next_t next_index;
- vnet_policer_main_t * pm = &vnet_policer_main;
+ vnet_policer_main_t *pm = &vnet_policer_main;
u64 time_in_policer_periods;
u32 transmitted = 0;
- time_in_policer_periods =
- clib_cpu_time_now() >> POLICER_TICKS_PER_PERIOD_SHIFT;
+ time_in_policer_periods =
+ clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
{
u32 n_left_to_next;
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- u32 pi0 = 0, pi1 = 0;
- u32 len0, len1;
- u32 col0, col1;
- policer_read_response_type_st * pol0, * pol1;
-
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ u32 pi0 = 0, pi1 = 0;
+ u8 act0, act1;
+
/* Prefetch next iteration. */
{
- vlib_buffer_t * b2, * b3;
-
+ vlib_buffer_t *b2, *b3;
+
b2 = vlib_get_buffer (vm, from[2]);
b3 = vlib_get_buffer (vm, from[3]);
-
+
vlib_prefetch_buffer_header (b2, LOAD);
vlib_prefetch_buffer_header (b3, LOAD);
}
- /* speculatively enqueue b0 and b1 to the current next frame */
+ /* speculatively enqueue b0 and b1 to the current next frame */
to_next[0] = bi0 = from[0];
to_next[1] = bi1 = from[1];
from += 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
- next0 = VNET_POLICER_NEXT_TRANSMIT;
-
- sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
- next1 = VNET_POLICER_NEXT_TRANSMIT;
-
-
- if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
- {
- pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
- pi1 = pm->policer_index_by_sw_if_index[sw_if_index1];
- }
-
- if (which == VNET_POLICER_INDEX_BY_OPAQUE)
- {
- pi0 = vnet_buffer(b0)->policer.index;
- pi1 = vnet_buffer(b1)->policer.index;
- }
-
- if (which == VNET_POLICER_INDEX_BY_EITHER)
- {
- pi0 = vnet_buffer(b0)->policer.index;
- pi0 = (pi0 != ~0) ? pi0 :
- pm->policer_index_by_sw_if_index [sw_if_index0];
- pi1 = vnet_buffer(b1)->policer.index;
- pi1 = (pi1 != ~0) ? pi1 :
- pm->policer_index_by_sw_if_index [sw_if_index1];
- }
-
- len0 = vlib_buffer_length_in_chain (vm, b0);
- pol0 = &pm->policers [pi0];
- col0 = vnet_police_packet (pol0, len0,
- POLICE_CONFORM /* no chaining */,
- time_in_policer_periods);
-
- len1 = vlib_buffer_length_in_chain (vm, b1);
- pol1 = &pm->policers [pi1];
- col1 = vnet_police_packet (pol1, len1,
- POLICE_CONFORM /* no chaining */,
- time_in_policer_periods);
-
- if (PREDICT_FALSE(col0 > 0))
- {
- next0 = VNET_POLICER_NEXT_DROP;
- b0->error = node->errors[VNET_POLICER_ERROR_DROP];
- }
- else
- transmitted++;
-
- if (PREDICT_FALSE(col1 > 0))
- {
- next1 = VNET_POLICER_NEXT_DROP;
- b1->error = node->errors[VNET_POLICER_ERROR_DROP];
- }
- else
- transmitted++;
-
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)))
- {
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- vnet_policer_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- vnet_policer_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->next_index = next1;
- }
- }
-
- /* verify speculative enqueues, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
- }
-
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ next0 = VNET_POLICER_NEXT_TRANSMIT;
+
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ next1 = VNET_POLICER_NEXT_TRANSMIT;
+
+
+ if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
+ {
+ pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
+ pi1 = pm->policer_index_by_sw_if_index[sw_if_index1];
+ }
+
+ if (which == VNET_POLICER_INDEX_BY_OPAQUE)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi1 = vnet_buffer (b1)->policer.index;
+ }
+
+ if (which == VNET_POLICER_INDEX_BY_EITHER)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi0 = (pi0 != ~0) ? pi0 :
+ pm->policer_index_by_sw_if_index[sw_if_index0];
+ pi1 = vnet_buffer (b1)->policer.index;
+ pi1 = (pi1 != ~0) ? pi1 :
+ pm->policer_index_by_sw_if_index[sw_if_index1];
+ }
+
+ act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ act1 = vnet_policer_police (vm, b1, pi1, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next0 = VNET_POLICER_NEXT_DROP;
+ b0->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+ if (PREDICT_FALSE (act1 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next1 = VNET_POLICER_NEXT_DROP;
+ b1->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ t->next_index = next1;
+ }
+ }
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
while (n_left_from > 0 && n_left_to_next > 0)
{
- u32 bi0;
- vlib_buffer_t * b0;
- u32 next0;
- u32 sw_if_index0;
- u32 pi0 = 0;
- u32 len0;
- u32 col0;
- policer_read_response_type_st * pol0;
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ u32 pi0 = 0;
+ u8 act0;
bi0 = from[0];
to_next[0] = bi0;
b0 = vlib_get_buffer (vm, bi0);
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
- next0 = VNET_POLICER_NEXT_TRANSMIT;
-
- if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
- pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
-
- if (which == VNET_POLICER_INDEX_BY_OPAQUE)
- pi0 = vnet_buffer(b0)->policer.index;
-
- if (which == VNET_POLICER_INDEX_BY_EITHER)
- {
- pi0 = vnet_buffer(b0)->policer.index;
- pi0 = (pi0 != ~0) ? pi0 :
- pm->policer_index_by_sw_if_index [sw_if_index0];
- }
-
- len0 = vlib_buffer_length_in_chain (vm, b0);
- pol0 = &pm->policers [pi0];
- col0 = vnet_police_packet (pol0, len0,
- POLICE_CONFORM /* no chaining */,
- time_in_policer_periods);
-
- if (PREDICT_FALSE(col0 > 0))
- {
- next0 = VNET_POLICER_NEXT_DROP;
- b0->error = node->errors[VNET_POLICER_ERROR_DROP];
- }
- else
- {
- transmitted++;
- }
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- vnet_policer_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->policer_index = pi0;
- }
-
- /* verify speculative enqueue, maybe switch current next frame */
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ next0 = VNET_POLICER_NEXT_TRANSMIT;
+
+ if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
+ pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
+
+ if (which == VNET_POLICER_INDEX_BY_OPAQUE)
+ pi0 = vnet_buffer (b0)->policer.index;
+
+ if (which == VNET_POLICER_INDEX_BY_EITHER)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi0 = (pi0 != ~0) ? pi0 :
+ pm->policer_index_by_sw_if_index[sw_if_index0];
+ }
+
+ act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next0 = VNET_POLICER_NEXT_DROP;
+ b0->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->policer_index = pi0;
+ }
+
+ /* 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,
- VNET_POLICER_ERROR_TRANSMIT,
- transmitted);
+ vlib_node_increment_counter (vm, node->node_index,
+ VNET_POLICER_ERROR_TRANSMIT, transmitted);
return frame->n_vectors;
}
-uword vnet_policer_by_sw_if_index (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+uword
+vnet_policer_by_sw_if_index (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- return vnet_policer_inline (vm, node, frame,
- VNET_POLICER_INDEX_BY_SW_IF_INDEX);
+ return vnet_policer_inline (vm, node, frame,
+ VNET_POLICER_INDEX_BY_SW_IF_INDEX);
}
-uword vnet_policer_by_opaque (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+uword
+vnet_policer_by_opaque (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- return vnet_policer_inline (vm, node, frame,
- VNET_POLICER_INDEX_BY_OPAQUE);
+ return vnet_policer_inline (vm, node, frame, VNET_POLICER_INDEX_BY_OPAQUE);
}
-uword vnet_policer_by_either (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+uword
+vnet_policer_by_either (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- return vnet_policer_inline (vm, node, frame,
- VNET_POLICER_INDEX_BY_EITHER);
+ return vnet_policer_inline (vm, node, frame, VNET_POLICER_INDEX_BY_EITHER);
}
-void vnet_policer_node_funcs_reference (void) { }
+void
+vnet_policer_node_funcs_reference (void)
+{
+}
#define TEST_CODE 1
#ifdef TEST_CODE
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE (policer_by_sw_if_index_node, static) = {
.function = vnet_policer_by_sw_if_index,
.name = "policer-by-sw-if-index",
.vector_size = sizeof (u32),
.format_trace = format_policer_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
-
+
.n_errors = ARRAY_LEN(vnet_policer_error_strings),
.error_strings = vnet_policer_error_strings,
-
+
.n_next_nodes = VNET_POLICER_N_NEXT,
/* edit / add dispositions here */
},
};
+VLIB_NODE_FUNCTION_MULTIARCH (policer_by_sw_if_index_node,
+ vnet_policer_by_sw_if_index);
+/* *INDENT-ON* */
+
-int test_policer_add_del (u32 rx_sw_if_index, u8 *config_name,
- int is_add)
+int
+test_policer_add_del (u32 rx_sw_if_index, u8 * config_name, int is_add)
{
- vnet_policer_main_t * pm = &vnet_policer_main;
- policer_read_response_type_st * template;
- policer_read_response_type_st * policer;
- vnet_hw_interface_t * rxhi;
- uword * p;
+ vnet_policer_main_t *pm = &vnet_policer_main;
+ policer_read_response_type_st *template;
+ policer_read_response_type_st *policer;
+ vnet_hw_interface_t *rxhi;
+ uword *p;
rxhi = vnet_get_sup_hw_interface (pm->vnet_main, rx_sw_if_index);
if (is_add)
{
-
+
p = hash_get_mem (pm->policer_config_by_name, config_name);
if (p == 0)
- return -2;
+ return -2;
template = pool_elt_at_index (pm->policer_templates, p[0]);
- vnet_hw_interface_rx_redirect_to_node
- (pm->vnet_main,
- rxhi->hw_if_index,
- policer_by_sw_if_index_node.index);
+ vnet_hw_interface_rx_redirect_to_node
+ (pm->vnet_main, rxhi->hw_if_index, policer_by_sw_if_index_node.index);
pool_get_aligned (pm->policers, policer, CLIB_CACHE_LINE_BYTES);
policer[0] = template[0];
vec_validate (pm->policer_index_by_sw_if_index, rx_sw_if_index);
- pm->policer_index_by_sw_if_index[rx_sw_if_index]
- = policer - pm->policers;
+ pm->policer_index_by_sw_if_index[rx_sw_if_index]
+ = policer - pm->policers;
}
else
{
u32 pi;
- vnet_hw_interface_rx_redirect_to_node (pm->vnet_main,
- rxhi->hw_if_index,
- ~0 /* disable */);
+ vnet_hw_interface_rx_redirect_to_node (pm->vnet_main,
+ rxhi->hw_if_index,
+ ~0 /* disable */ );
pi = pm->policer_index_by_sw_if_index[rx_sw_if_index];
pm->policer_index_by_sw_if_index[rx_sw_if_index] = ~0;
pool_put_index (pm->policers, pi);
}
-
+
return 0;
}
static clib_error_t *
test_policer_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input, vlib_cli_command_t * cmd)
{
- vnet_policer_main_t * pm = &vnet_policer_main;
- unformat_input_t _line_input, * line_input = &_line_input;
+ vnet_policer_main_t *pm = &vnet_policer_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
u32 rx_sw_if_index;
int rv;
- u8 * config_name = 0;
+ u8 *config_name = 0;
int rx_set = 0;
int is_add = 1;
int is_show = 0;
/* Get a line of input. */
- if (! unformat_user (input, unformat_line_input, line_input))
+ if (!unformat_user (input, unformat_line_input, line_input))
return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "intfc %U", unformat_vnet_sw_interface,
- pm->vnet_main, &rx_sw_if_index))
- rx_set = 1;
+ pm->vnet_main, &rx_sw_if_index))
+ rx_set = 1;
else if (unformat (line_input, "show"))
- is_show=1;
+ is_show = 1;
else if (unformat (line_input, "policer %s", &config_name))
- ;
+ ;
else if (unformat (line_input, "del"))
- is_add = 0;
- else break;
+ is_add = 0;
+ else
+ break;
}
if (rx_set == 0)
if (is_show)
{
u32 pi = pm->policer_index_by_sw_if_index[rx_sw_if_index];
- policer_read_response_type_st * policer;
+ policer_read_response_type_st *policer;
policer = pool_elt_at_index (pm->policers, pi);
-
+
vlib_cli_output (vm, "%U", format_policer_instance, policer);
return 0;
}
break;
default:
- return clib_error_return
- (0, "WARNING: vnet_vnet_policer_add_del returned %d", rv);
+ return clib_error_return
+ (0, "WARNING: vnet_vnet_policer_add_del returned %d", rv);
}
-
+
return 0;
}
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (test_patch_command, static) = {
.path = "test policer",
- .short_help =
+ .short_help =
"intfc <intfc> policer <policer-config-name> [del]",
.function = test_policer_command_fn,
};
-
+/* *INDENT-ON* */
#endif /* TEST_CODE */
+
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 next_index;
+ u32 table_index;
+ u32 offset;
+ u32 policer_index;
+} policer_classify_trace_t;
+
+static u8 *
+format_policer_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 *);
+ policer_classify_trace_t *t = va_arg (*args, policer_classify_trace_t *);
+
+ s = format (s, "POLICER_CLASSIFY: sw_if_index %d next %d table %d offset %d"
+ " policer_index %d",
+ t->sw_if_index, t->next_index, t->table_index, t->offset,
+ t->policer_index);
+ return s;
+}
+
+#define foreach_policer_classify_error \
+_(MISS, "Policer classify misses") \
+_(HIT, "Policer classify hits") \
+_(CHAIN_HIT, "Polcier classify hits after chain walk") \
+_(DROP, "Policer classify action drop")
+
+typedef enum
+{
+#define _(sym,str) POLICER_CLASSIFY_ERROR_##sym,
+ foreach_policer_classify_error
+#undef _
+ POLICER_CLASSIFY_N_ERROR,
+} policer_classify_error_t;
+
+static char *policer_classify_error_strings[] = {
+#define _(sym,string) string,
+ foreach_policer_classify_error
+#undef _
+};
+
+static inline uword
+policer_classify_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ policer_classify_table_id_t tid)
+{
+ u32 n_left_from, *from, *to_next;
+ policer_classify_next_index_t next_index;
+ policer_classify_main_t *pcm = &policer_classify_main;
+ vnet_classify_main_t *vcm = pcm->vnet_classify_main;
+ f64 now = vlib_time_now (vm);
+ u32 hits = 0;
+ u32 misses = 0;
+ u32 chain_hits = 0;
+ u32 drop = 0;
+ u32 n_next_nodes;
+ u64 time_in_policer_periods;
+
+ time_in_policer_periods =
+ clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
+
+ n_next_nodes = node->n_next_nodes;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+
+ /* First pass: compute hashes */
+ while (n_left_from > 2)
+ {
+ vlib_buffer_t *b0, *b1;
+ u32 bi0, bi1;
+ u8 *h0, *h1;
+ u32 sw_if_index0, sw_if_index1;
+ u32 table_index0, table_index1;
+ vnet_classify_table_t *t0, *t1;
+
+ /* 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 = b0->data;
+
+ bi1 = from[1];
+ b1 = vlib_get_buffer (vm, bi1);
+ h1 = b1->data;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ table_index0 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
+
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ table_index1 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index1];
+
+ t0 = pool_elt_at_index (vcm->tables, table_index0);
+
+ t1 = pool_elt_at_index (vcm->tables, table_index1);
+
+ vnet_buffer (b0)->l2_classify.hash =
+ vnet_classify_hash_packet (t0, (u8 *) h0);
+
+ vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
+
+ vnet_buffer (b1)->l2_classify.hash =
+ vnet_classify_hash_packet (t1, (u8 *) h1);
+
+ vnet_classify_prefetch_bucket (t1, vnet_buffer (b1)->l2_classify.hash);
+
+ vnet_buffer (b0)->l2_classify.table_index = table_index0;
+
+ vnet_buffer (b1)->l2_classify.table_index = table_index1;
+
+ from += 2;
+ n_left_from -= 2;
+ }
+
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 bi0;
+ u8 *h0;
+ u32 sw_if_index0;
+ u32 table_index0;
+ vnet_classify_table_t *t0;
+
+ bi0 = from[0];
+ b0 = vlib_get_buffer (vm, bi0);
+ h0 = b0->data;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ table_index0 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
+
+ t0 = pool_elt_at_index (vcm->tables, table_index0);
+ vnet_buffer (b0)->l2_classify.hash =
+ vnet_classify_hash_packet (t0, (u8 *) h0);
+
+ vnet_buffer (b0)->l2_classify.table_index = table_index0;
+ vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
+
+ 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 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ u32 table_index0;
+ vnet_classify_table_t *t0;
+ vnet_classify_entry_t *e0;
+ u64 hash0;
+ u8 *h0;
+ u8 act0;
+
+ /* Stride 3 seems to work best */
+ if (PREDICT_TRUE (n_left_from > 3))
+ {
+ vlib_buffer_t *p1 = vlib_get_buffer (vm, from[3]);
+ vnet_classify_table_t *tp1;
+ u32 table_index1;
+ u64 phash1;
+
+ table_index1 = vnet_buffer (p1)->l2_classify.table_index;
+
+ if (PREDICT_TRUE (table_index1 != ~0))
+ {
+ tp1 = pool_elt_at_index (vcm->tables, table_index1);
+ phash1 = vnet_buffer (p1)->l2_classify.hash;
+ vnet_classify_prefetch_entry (tp1, phash1);
+ }
+ }
+
+ /* 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 = b0->data;
+ table_index0 = vnet_buffer (b0)->l2_classify.table_index;
+ e0 = 0;
+ t0 = 0;
+
+ if (tid == POLICER_CLASSIFY_TABLE_L2)
+ {
+ /* Feature bitmap update */
+ vnet_buffer (b0)->l2.feature_bitmap &=
+ ~L2INPUT_FEAT_POLICER_CLAS;
+ /* Determine the next node */
+ next0 =
+ feat_bitmap_get_next_node_index (pcm->feat_next_node_index,
+ vnet_buffer (b0)->
+ l2.feature_bitmap);
+ }
+ else
+ vnet_get_config_data (pcm->vnet_config_main[tid],
+ &b0->current_config_index, &next0,
+ /* # bytes of config data */ 0);
+
+ vnet_buffer (b0)->l2_classify.opaque_index = ~0;
+
+ 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)
+ {
+ act0 = vnet_policer_police (vm,
+ b0,
+ e0->next_index,
+ time_in_policer_periods,
+ e0->opaque_index);
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP))
+ {
+ next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ b0->error = node->errors[POLICER_CLASSIFY_ERROR_DROP];
+ drop++;
+ }
+ hits++;
+ }
+ else
+ {
+ while (1)
+ {
+ if (PREDICT_TRUE (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)
+ {
+ act0 = vnet_policer_police (vm,
+ b0,
+ e0->next_index,
+ time_in_policer_periods,
+ e0->opaque_index);
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP))
+ {
+ next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ b0->error =
+ node->errors[POLICER_CLASSIFY_ERROR_DROP];
+ drop++;
+ }
+ hits++;
+ chain_hits++;
+ break;
+ }
+ }
+ }
+ }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ policer_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->next_index = next0;
+ t->table_index = t0 ? t0 - vcm->tables : ~0;
+ t->offset = (e0 && t0) ? vnet_classify_get_offset (t0, e0) : ~0;
+ t->policer_index = e0 ? e0->next_index : ~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,
+ POLICER_CLASSIFY_ERROR_MISS, misses);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_HIT, hits);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_CHAIN_HIT, chain_hits);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_DROP, drop);
+
+ return frame->n_vectors;
+}
+
+static uword
+ip4_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame,
+ POLICER_CLASSIFY_TABLE_IP4);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip4_policer_classify_node) = {
+ .function = ip4_policer_classify,
+ .name = "ip4-policer-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_policer_classify_trace,
+ .n_errors = ARRAY_LEN(policer_classify_error_strings),
+ .error_strings = policer_classify_error_strings,
+ .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
+ .next_nodes = {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_policer_classify_node, ip4_policer_classify);
+/* *INDENT-ON* */
+
+static uword
+ip6_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame,
+ POLICER_CLASSIFY_TABLE_IP6);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_policer_classify_node) = {
+ .function = ip6_policer_classify,
+ .name = "ip6-policer-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_policer_classify_trace,
+ .n_errors = ARRAY_LEN(policer_classify_error_strings),
+ .error_strings = policer_classify_error_strings,
+ .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
+ .next_nodes = {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_policer_classify_node, ip6_policer_classify);
+/* *INDENT-ON* */
+
+static uword
+l2_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame, POLICER_CLASSIFY_TABLE_L2);
+}
+
+VLIB_REGISTER_NODE (l2_policer_classify_node) =
+{
+ .function = l2_policer_classify,.name = "l2-policer-classify",.vector_size =
+ sizeof (u32),.format_trace = format_policer_classify_trace,.n_errors =
+ ARRAY_LEN (policer_classify_error_strings),.error_strings =
+ policer_classify_error_strings,.n_next_nodes =
+ POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,.next_nodes =
+ {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",}
+,};
+
+VLIB_NODE_FUNCTION_MULTIARCH (l2_policer_classify_node, l2_policer_classify);
+
+
+static clib_error_t *
+policer_classify_init (vlib_main_t * vm)
+{
+ policer_classify_main_t *pcm = &policer_classify_main;
+
+ pcm->vlib_main = vm;
+ pcm->vnet_main = vnet_get_main ();
+ pcm->vnet_classify_main = &vnet_classify_main;
+
+ /* Initialize L2 feature next-node indexes */
+ feat_bitmap_init_next_nodes (vm,
+ l2_policer_classify_node.index,
+ L2INPUT_N_FEAT,
+ l2input_get_feat_names (),
+ pcm->feat_next_node_index);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (policer_classify_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff