summaryrefslogtreecommitdiffstats
path: root/src/vppinfra
diff options
context:
space:
mode:
authorMohsin Kazmi <sykazmi@cisco.com>2021-05-05 14:26:38 +0200
committerDamjan Marion <dmarion@me.com>2021-05-06 10:28:02 +0000
commit36f7a6aeb021a549f2d684868303c9891bc0dd00 (patch)
tree730f3b7ed52c07e52d863d5f467debcb4c4ca8c7 /src/vppinfra
parent11e0d752e67ac3da804e2af798d12995ae401434 (diff)
vlib: fix the offload flags size
Type: fix Change-Id: I433fe3799975fe3ba00fa30226f6e8dae34e88fc Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vppinfra')
0 files changed, 0 insertions, 0 deletions
9 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 
/*
 * Copyright (c) 2016 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 <vnet/dpo/dvr_dpo.h>
#include <vnet/fib/fib_node.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/l2/l2_input.h>

#ifndef CLIB_MARCH_VARIANT
dvr_dpo_t *dvr_dpo_pool;

/**
 * The 'DB' of DVR DPOs.
 * There is one per-interface per-L3 proto, so this is a per-interface vector
 */
static index_t *dvr_dpo_db[DPO_PROTO_NUM];

static dvr_dpo_t *
dvr_dpo_alloc (void)
{
    dvr_dpo_t *dd;

    pool_get(dvr_dpo_pool, dd);

    return (dd);
}

static inline dvr_dpo_t *
dvr_dpo_get_from_dpo (const dpo_id_t *dpo)
{
    ASSERT(DPO_DVR == dpo->dpoi_type);

    return (dvr_dpo_get(dpo->dpoi_index));
}

static inline index_t
dvr_dpo_get_index (dvr_dpo_t *dd)
{
    return (dd - dvr_dpo_pool);
}

static void
dvr_dpo_lock (dpo_id_t *dpo)
{
    dvr_dpo_t *dd;

    dd = dvr_dpo_get_from_dpo(dpo);
    dd->dd_locks++;
}

static void
dvr_dpo_unlock (dpo_id_t *dpo)
{
    dvr_dpo_t *dd;

    dd = dvr_dpo_get_from_dpo(dpo);
    dd->dd_locks--;

    if (0 == dd->dd_locks)
    {
        if (DPO_PROTO_IP4 == dd->dd_proto)
        {
            vnet_feature_enable_disable ("ip4-output", "ip4-dvr-reinject",
                                         dd->dd_sw_if_index, 0, 0, 0);
        }
        else
        {
            vnet_feature_enable_disable ("ip6-output", "ip6-dvr-reinject",
                                         dd->dd_sw_if_index, 0, 0, 0);
        }

        dvr_dpo_db[dd->dd_proto][dd->dd_sw_if_index] = INDEX_INVALID;
        pool_put(dvr_dpo_pool, dd);
    }
}

void
dvr_dpo_add_or_lock (u32 sw_if_index,
                     dpo_proto_t dproto,
                     dpo_id_t *dpo)
{
    l2_input_config_t *config;
    dvr_dpo_t *dd;

    vec_validate_init_empty(dvr_dpo_db[dproto],
                            sw_if_index,
                            INDEX_INVALID);

    if (INDEX_INVALID == dvr_dpo_db[dproto][sw_if_index])
    {
        dd = dvr_dpo_alloc();

        dd->dd_sw_if_index = sw_if_index;
        dd->dd_proto = dproto;

        dvr_dpo_db[dproto][sw_if_index] = dvr_dpo_get_index(dd);

        config = l2input_intf_config (sw_if_index);

        if (l2_input_is_bridge(config) ||
            l2_input_is_xconnect(config))
        {
            dd->dd_reinject = DVR_REINJECT_L2;
        }
        else
        {
            dd->dd_reinject = DVR_REINJECT_L3;
        }

        /*
         * enable the reinject into L2 path feature on the interface
         */
        if (DPO_PROTO_IP4 == dproto)
            vnet_feature_enable_disable ("ip4-output", "ip4-dvr-reinject",
                                         dd->dd_sw_if_index, 1, 0, 0);
        else if (DPO_PROTO_IP6 == dproto)
            vnet_feature_enable_disable ("ip6-output", "ip6-dvr-reinject",
                                         dd->dd_sw_if_index, 1, 0, 0);
        else
            ASSERT(0);
    }
    else
    {
        dd = dvr_dpo_get(dvr_dpo_db[dproto][sw_if_index]);
    }

    dpo_set(dpo, DPO_DVR, dproto, dvr_dpo_get_index(dd));
}
#endif /* CLIB_MARCH_VARIANT */


static clib_error_t *
dvr_dpo_interface_state_change (vnet_main_t * vnm,
                                      u32 sw_if_index,
                                      u32 flags)
{
    /*
     */
    return (NULL);
}

VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
    dvr_dpo_interface_state_change);

/**
 * @brief Registered callback for HW interface state changes
 */
static clib_error_t *
dvr_dpo_hw_interface_state_change (vnet_main_t * vnm,
                                         u32 hw_if_index,
                                         u32 flags)
{
    return (NULL);
}

VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
    dvr_dpo_hw_interface_state_change);

static clib_error_t *
dvr_dpo_interface_delete (vnet_main_t * vnm,
                                u32 sw_if_index,
                                u32 is_add)
{
    return (NULL);
}

VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
    dvr_dpo_interface_delete);

#ifndef CLIB_MARCH_VARIANT
static u8*
format_dvr_reinject (u8* s, va_list *ap)
{
    dvr_dpo_reinject_t ddr = va_arg(*ap, int);

    switch (ddr)
    {
    case DVR_REINJECT_L2:
        s = format (s, "l2");
        break;
    case DVR_REINJECT_L3:
        s = format (s, "l3");
        break;
    }
    return (s);
}

static u8*
format_dvr_dpo (u8* s, va_list *ap)
{
    index_t index = va_arg(*ap, index_t);
    CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
    vnet_main_t * vnm = vnet_get_main();
    dvr_dpo_t *dd = dvr_dpo_get(index);

    return (format(s, "%U-dvr-%U-dpo %U",
                   format_dpo_proto, dd->dd_proto,
                   format_vnet_sw_interface_name,
                   vnm,
                   vnet_get_sw_interface(vnm, dd->dd_sw_if_index),
                   format_dvr_reinject, dd->dd_reinject));
}

static void
dvr_dpo_mem_show (void)
{
    fib_show_memory_usage("DVR",
                          pool_elts(dvr_dpo_pool),
                          pool_len(dvr_dpo_pool),
                          sizeof(dvr_dpo_t));
}


const static dpo_vft_t dvr_dpo_vft = {
    .dv_lock = dvr_dpo_lock,
    .dv_unlock = dvr_dpo_unlock,
    .dv_format = format_dvr_dpo,
    .dv_mem_show = dvr_dpo_mem_show,
};

/**
 * @brief The per-protocol VLIB graph nodes that are assigned to a glean
 *        object.
 *
 * this means that these graph nodes are ones from which a glean is the
 * parent object in the DPO-graph.
 */
const static char* const dvr_dpo_ip4_nodes[] =
{
    "ip4-dvr-dpo",
    NULL,
};
const static char* const dvr_dpo_ip6_nodes[] =
{
    "ip6-dvr-dpo",
    NULL,
};

const static char* const * const dvr_dpo_nodes[DPO_PROTO_NUM] =
{
    [DPO_PROTO_IP4]  = dvr_dpo_ip4_nodes,
    [DPO_PROTO_IP6]  = dvr_dpo_ip6_nodes,
};

void
dvr_dpo_module_init (void)
{
    dpo_register(DPO_DVR,
                 &dvr_dpo_vft,
                 dvr_dpo_nodes);
}
#endif /* CLIB_MARCH_VARIANT */

/**
 * @brief Interface DPO trace data
 */
typedef struct dvr_dpo_trace_t_
{
    u32 sw_if_index;
} dvr_dpo_trace_t;

always_inline uword
dvr_dpo_inline (vlib_main_t * vm,
                vlib_node_runtime_t * node,
                vlib_frame_t * from_frame,
                u8 is_ip6)
{
    u32 n_left_from, next_index, * from, * to_next;
    ip_lookup_main_t *lm = (is_ip6?
                            &ip6_main.lookup_main:
                            &ip4_main.lookup_main);

    from = vlib_frame_vector_args (from_frame);
    n_left_from = from_frame->n_vectors;

    next_index = node->cached_next_index;

    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 >= 4 && n_left_to_next > 2)
        {
            const dvr_dpo_t *dd0, *dd1;
            u32 bi0, ddi0, bi1, ddi1;
            vlib_buffer_t *b0, *b1;
            u32 next0, next1;
            u8 len0, len1;

            bi0 = from[0];
            to_next[0] = bi0;
            bi1 = from[1];
            to_next[1] = bi1;
            from += 2;
            to_next += 2;
            n_left_from -= 2;
            n_left_to_next -= 2;
            next0 = next1 = 0;

            b0 = vlib_get_buffer (vm, bi0);
            b1 = vlib_get_buffer (vm, bi1);

            ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
            ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
            dd0 = dvr_dpo_get(ddi0);
            dd1 = dvr_dpo_get(ddi1);

            vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;
            vnet_buffer(b1)->sw_if_index[VLIB_TX] = dd1->dd_sw_if_index;

            len0 = ((u8*)vlib_buffer_get_current(b0) -
                    (u8*)ethernet_buffer_get_header(b0));
            len1 = ((u8*)vlib_buffer_get_current(b1) -
                    (u8*)ethernet_buffer_get_header(b1));
            vnet_buffer(b0)->l2.l2_len =
                vnet_buffer(b0)->ip.save_rewrite_length =
                   len0;
            vnet_buffer(b1)->l2.l2_len =
                vnet_buffer(b1)->ip.save_rewrite_length =
                    len1;

            b0->flags |= VNET_BUFFER_F_IS_DVR;
            b1->flags |= VNET_BUFFER_F_IS_DVR;

            vlib_buffer_advance(b0, -len0);
            vlib_buffer_advance(b1, -len1);

            vnet_feature_arc_start (lm->output_feature_arc_index,
                                    dd0->dd_sw_if_index, &next0, b0);
            vnet_feature_arc_start (lm->output_feature_arc_index,
                                    dd1->dd_sw_if_index, &next1, b1);

            if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr0;

                tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
                tr0->sw_if_index = dd0->dd_sw_if_index;
            }
            if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr1;

                tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
                tr1->sw_if_index = dd1->dd_sw_if_index;
            }

            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)
        {
            const dvr_dpo_t * dd0;
            vlib_buffer_t * b0;
            u32 bi0, ddi0;
            u32 next0;
            u8 len0;

            bi0 = from[0];
            to_next[0] = bi0;
            from += 1;
            to_next += 1;
            n_left_from -= 1;
            n_left_to_next -= 1;
            next0 = 0;

            b0 = vlib_get_buffer (vm, bi0);

            ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
            dd0 = dvr_dpo_get(ddi0);

            vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;

            /*
             * take that, rewind it back...
             */
            len0 = ((u8*)vlib_buffer_get_current(b0) -
                    (u8*)ethernet_buffer_get_header(b0));
            vnet_buffer(b0)->l2.l2_len =
                vnet_buffer(b0)->ip.save_rewrite_length =
                    len0;
            b0->flags |= VNET_BUFFER_F_IS_DVR;
            vlib_buffer_advance(b0, -len0);

            /*
             * start processing the ipX output features
             */
            vnet_feature_arc_start(lm->output_feature_arc_index,
                                   dd0->dd_sw_if_index, &next0, b0);

            if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr;

                tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
                tr->sw_if_index = dd0->dd_sw_if_index;
            }

            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 from_frame->n_vectors;
}

static u8 *
format_dvr_dpo_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 *);
    dvr_dpo_trace_t * t = va_arg (*args, dvr_dpo_trace_t *);
    u32 indent = format_get_indent (s);
    s = format (s, "%U sw_if_index:%d",
                format_white_space, indent,
                t->sw_if_index);
    return s;
}

VLIB_NODE_FN (ip4_dvr_dpo_node) (vlib_main_t * vm,
             vlib_node_runtime_t * node,
             vlib_frame_t * from_frame)
{
    return (dvr_dpo_inline(vm, node, from_frame, 0));
}

VLIB_NODE_FN (ip6_dvr_dpo_node) (vlib_main_t * vm,
             vlib_node_runtime_t * node,
             vlib_frame_t * from_frame)
{
    return (dvr_dpo_inline(vm, node, from_frame, 1));
}

VLIB_REGISTER_NODE (ip4_dvr_dpo_node) = {
    .name = "ip4-dvr-dpo",
    .vector_size = sizeof (u32),
    .format_trace = format_dvr_dpo_trace,
    .sibling_of = "ip4-rewrite",
};
VLIB_REGISTER_NODE (ip6_dvr_dpo_node) = {
    .name = "ip6-dvr-dpo",
    .vector_size = sizeof (u32),
    .format_trace = format_dvr_dpo_trace,
    .sibling_of = "ip6-rewrite",
};

typedef enum dvr_reinject_next_t_
{
    DVR_REINJECT_NEXT_L2,
    DVR_REINJECT_NEXT_L3,
} dvr_reinject_next_t;

always_inline uword
dvr_reinject_inline (vlib_main_t * vm,
                     vlib_node_runtime_t * node,
                     vlib_frame_t * from_frame)
{
    u32 n_left_from, next_index, * from, * to_next;

    from = vlib_frame_vector_args (from_frame);
    n_left_from = from_frame->n_vectors;

    next_index = node->cached_next_index;

    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 >= 4 && n_left_to_next > 2)
        {
            dvr_reinject_next_t next0, next1;
            const dvr_dpo_t *dd0, *dd1;
            u32 bi0, bi1, ddi0, ddi1;
            vlib_buffer_t *b0, *b1;

            bi0 = from[0];
            to_next[0] = bi0;
            bi1 = from[1];
            to_next[1] = bi1;
            from += 2;
            to_next += 2;
            n_left_from -= 2;
            n_left_to_next -= 2;

            b0 = vlib_get_buffer (vm, bi0);
            b1 = vlib_get_buffer (vm, bi1);

            if (b0->flags & VNET_BUFFER_F_IS_DVR)
            {
                ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
                dd0 = dvr_dpo_get(ddi0);
                next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
                         DVR_REINJECT_NEXT_L2 :
                         DVR_REINJECT_NEXT_L3);
            }
            else
                vnet_feature_next( &next0, b0);

            if (b1->flags & VNET_BUFFER_F_IS_DVR)
            {
                ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
                dd1 = dvr_dpo_get(ddi1);
                next1 = (dd1->dd_reinject == DVR_REINJECT_L2 ?
                         DVR_REINJECT_NEXT_L2 :
                         DVR_REINJECT_NEXT_L3);
            }
            else
                vnet_feature_next( &next1, b1);

            if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr0;

                tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
                tr0->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
            }
            if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr1;

                tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
                tr1->sw_if_index = vnet_buffer(b1)->sw_if_index[VLIB_TX];
            }

            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)
        {
            dvr_reinject_next_t next0;
            const dvr_dpo_t *dd0;
            vlib_buffer_t * b0;
            u32 bi0, ddi0;

            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);

            if (b0->flags & VNET_BUFFER_F_IS_DVR)
            {
                ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
                dd0 = dvr_dpo_get(ddi0);
                next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
                         DVR_REINJECT_NEXT_L2 :
                         DVR_REINJECT_NEXT_L3);
            }
            else
                vnet_feature_next( &next0, b0);

            if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
            {
                dvr_dpo_trace_t *tr;

                tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
                tr->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
            }

            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 from_frame->n_vectors;
}

VLIB_NODE_FN (ip4_dvr_reinject_node) (vlib_main_t * vm,
                  vlib_node_runtime_t * node,
                  vlib_frame_t * from_frame)
{
    return (dvr_reinject_inline(vm, node, from_frame));
}

VLIB_NODE_FN (ip6_dvr_reinject_node) (vlib_main_t * vm,
                  vlib_node_runtime_t * node,
                  vlib_frame_t * from_frame)
{
    return (dvr_reinject_inline(vm, node, from_frame));
}

VLIB_REGISTER_NODE (ip4_dvr_reinject_node) = {
    .name = "ip4-dvr-reinject",
    .vector_size = sizeof (u32),
    .format_trace = format_dvr_dpo_trace,

    .n_next_nodes = 1,
    .next_nodes = {
        [DVR_REINJECT_NEXT_L2] = "l2-output",
        [DVR_REINJECT_NEXT_L3] = "interface-output",
    },
};

VLIB_REGISTER_NODE (ip6_dvr_reinject_node) = {
    .name = "ip6-dvr-reinject",
    .vector_size = sizeof (u32),
    .format_trace = format_dvr_dpo_trace,

    .n_next_nodes = 1,
    .next_nodes = {
        [DVR_REINJECT_NEXT_L2] = "l2-output",
        [DVR_REINJECT_NEXT_L3] = "interface-output",
    },
};

VNET_FEATURE_INIT (ip4_dvr_reinject_feat_node, static) =
{
  .arc_name = "ip4-output",
  .node_name = "ip4-dvr-reinject",
  .runs_after = VNET_FEATURES ("nat44-in2out-output",
                               "acl-plugin-out-ip4-fa"),
};
VNET_FEATURE_INIT (ip6_dvr_reinject_feat_node, static) =
{
  .arc_name = "ip6-output",
  .node_name = "ip6-dvr-reinject",
  .runs_after = VNET_FEATURES ("acl-plugin-out-ip6-fa"),
};