diff options
Diffstat (limited to 'src/plugins/dpdk/device/device.c')
| -rw-r--r-- | src/plugins/dpdk/device/device.c | 852 |
1 files changed, 852 insertions, 0 deletions
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c new file mode 100644 index 00000000000..50b2668977f --- /dev/null +++ b/src/plugins/dpdk/device/device.c @@ -0,0 +1,852 @@ +/* + * 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. + */ +#include <vnet/vnet.h> +#include <vppinfra/vec.h> +#include <vppinfra/format.h> +#include <vlib/unix/cj.h> +#include <assert.h> + +#include <vnet/ethernet/ethernet.h> +#include <dpdk/device/dpdk.h> + +#include <dpdk/device/dpdk_priv.h> +#include <vppinfra/error.h> + +#define foreach_dpdk_tx_func_error \ + _(BAD_RETVAL, "DPDK tx function returned an error") \ + _(RING_FULL, "Tx packet drops (ring full)") \ + _(PKT_DROP, "Tx packet drops (dpdk tx failure)") \ + _(REPL_FAIL, "Tx packet drops (replication failure)") + +typedef enum +{ +#define _(f,s) DPDK_TX_FUNC_ERROR_##f, + foreach_dpdk_tx_func_error +#undef _ + DPDK_TX_FUNC_N_ERROR, +} dpdk_tx_func_error_t; + +static char *dpdk_tx_func_error_strings[] = { +#define _(n,s) s, + foreach_dpdk_tx_func_error +#undef _ +}; + +clib_error_t * +dpdk_set_mac_address (vnet_hw_interface_t * hi, char *address) +{ + int error; + dpdk_main_t *dm = &dpdk_main; + dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance); + + error = rte_eth_dev_default_mac_addr_set (xd->device_index, + (struct ether_addr *) address); + + if (error) + { + return clib_error_return (0, "mac address set failed: %d", error); + } + else + { + vec_reset_length (xd->default_mac_address); + vec_add (xd->default_mac_address, address, sizeof (address)); + return NULL; + } +} + +clib_error_t * +dpdk_set_mc_filter (vnet_hw_interface_t * hi, + struct ether_addr mc_addr_vec[], int naddr) +{ + int error; + dpdk_main_t *dm = &dpdk_main; + dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance); + + error = rte_eth_dev_set_mc_addr_list (xd->device_index, mc_addr_vec, naddr); + + if (error) + { + return clib_error_return (0, "mc addr list failed: %d", error); + } + else + { + return NULL; + } +} + +struct rte_mbuf * +dpdk_replicate_packet_mb (vlib_buffer_t * b) +{ + dpdk_main_t *dm = &dpdk_main; + struct rte_mbuf **mbufs = 0, *s, *d; + u8 nb_segs; + unsigned socket_id = rte_socket_id (); + int i; + + ASSERT (dm->pktmbuf_pools[socket_id]); + s = rte_mbuf_from_vlib_buffer (b); + nb_segs = s->nb_segs; + vec_validate (mbufs, nb_segs - 1); + + if (rte_pktmbuf_alloc_bulk (dm->pktmbuf_pools[socket_id], mbufs, nb_segs)) + { + vec_free (mbufs); + return 0; + } + + d = mbufs[0]; + d->nb_segs = s->nb_segs; + d->data_len = s->data_len; + d->pkt_len = s->pkt_len; + d->data_off = s->data_off; + clib_memcpy (d->buf_addr, s->buf_addr, RTE_PKTMBUF_HEADROOM + s->data_len); + + for (i = 1; i < nb_segs; i++) + { + d->next = mbufs[i]; + d = mbufs[i]; + s = s->next; + d->data_len = s->data_len; + clib_memcpy (d->buf_addr, s->buf_addr, + RTE_PKTMBUF_HEADROOM + s->data_len); + } + + d = mbufs[0]; + vec_free (mbufs); + return d; +} + +static void +dpdk_tx_trace_buffer (dpdk_main_t * dm, + vlib_node_runtime_t * node, + dpdk_device_t * xd, + u16 queue_id, u32 buffer_index, vlib_buffer_t * buffer) +{ + vlib_main_t *vm = vlib_get_main (); + dpdk_tx_dma_trace_t *t0; + struct rte_mbuf *mb; + + mb = rte_mbuf_from_vlib_buffer (buffer); + + t0 = vlib_add_trace (vm, node, buffer, sizeof (t0[0])); + t0->queue_index = queue_id; + t0->device_index = xd->device_index; + t0->buffer_index = buffer_index; + clib_memcpy (&t0->mb, mb, sizeof (t0->mb)); + clib_memcpy (&t0->buffer, buffer, + sizeof (buffer[0]) - sizeof (buffer->pre_data)); + clib_memcpy (t0->buffer.pre_data, buffer->data + buffer->current_data, + sizeof (t0->buffer.pre_data)); +} + +static_always_inline void +dpdk_validate_rte_mbuf (vlib_main_t * vm, vlib_buffer_t * b, + int maybe_multiseg) +{ + struct rte_mbuf *mb, *first_mb, *last_mb; + + /* buffer is coming from non-dpdk source so we need to init + rte_mbuf header */ + if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_EXT_HDR_VALID) == 0)) + { + vlib_buffer_t *b2 = b; + last_mb = mb = rte_mbuf_from_vlib_buffer (b2); + rte_pktmbuf_reset (mb); + while (maybe_multiseg && (b2->flags & VLIB_BUFFER_NEXT_PRESENT)) + { + b2 = vlib_get_buffer (vm, b2->next_buffer); + mb = rte_mbuf_from_vlib_buffer (b2); + rte_pktmbuf_reset (mb); + } + } + + last_mb = first_mb = mb = rte_mbuf_from_vlib_buffer (b); + first_mb->nb_segs = 1; + mb->data_len = b->current_length; + mb->pkt_len = maybe_multiseg ? vlib_buffer_length_in_chain (vm, b) : + b->current_length; + mb->data_off = VLIB_BUFFER_PRE_DATA_SIZE + b->current_data; + + while (maybe_multiseg && (b->flags & VLIB_BUFFER_NEXT_PRESENT)) + { + b = vlib_get_buffer (vm, b->next_buffer); + mb = rte_mbuf_from_vlib_buffer (b); + last_mb->next = mb; + last_mb = mb; + mb->data_len = b->current_length; + mb->pkt_len = b->current_length; + mb->data_off = VLIB_BUFFER_PRE_DATA_SIZE + b->current_data; + first_mb->nb_segs++; + if (PREDICT_FALSE (b->n_add_refs)) + { + rte_mbuf_refcnt_update (mb, b->n_add_refs); + b->n_add_refs = 0; + } + } +} + +/* + * This function calls the dpdk's tx_burst function to transmit the packets + * on the tx_vector. It manages a lock per-device if the device does not + * support multiple queues. It returns the number of packets untransmitted + * on the tx_vector. If all packets are transmitted (the normal case), the + * function returns 0. + * + * The function assumes there is at least one packet on the tx_vector. + */ +static_always_inline + u32 tx_burst_vector_internal (vlib_main_t * vm, + dpdk_device_t * xd, + struct rte_mbuf **tx_vector) +{ + dpdk_main_t *dm = &dpdk_main; + u32 n_packets; + u32 tx_head; + u32 tx_tail; + u32 n_retry; + int rv; + int queue_id; + tx_ring_hdr_t *ring; + + ring = vec_header (tx_vector, sizeof (*ring)); + + n_packets = ring->tx_head - ring->tx_tail; + + tx_head = ring->tx_head % xd->nb_tx_desc; + + /* + * Ensure rte_eth_tx_burst is not called with 0 packets, which can lead to + * unpredictable results. + */ + ASSERT (n_packets > 0); + + /* + * Check for tx_vector overflow. If this fails it is a system configuration + * error. The ring should be sized big enough to handle the largest un-flowed + * off burst from a traffic manager. A larger size also helps performance + * a bit because it decreases the probability of having to issue two tx_burst + * calls due to a ring wrap. + */ + ASSERT (n_packets < xd->nb_tx_desc); + ASSERT (ring->tx_tail == 0); + + n_retry = 16; + queue_id = vm->cpu_index; + + do + { + /* start the burst at the tail */ + tx_tail = ring->tx_tail % xd->nb_tx_desc; + + /* + * This device only supports one TX queue, + * and we're running multi-threaded... + */ + if (PREDICT_FALSE (xd->lockp != 0)) + { + queue_id = queue_id % xd->tx_q_used; + while (__sync_lock_test_and_set (xd->lockp[queue_id], 1)) + /* zzzz */ + queue_id = (queue_id + 1) % xd->tx_q_used; + } + + if (PREDICT_FALSE (xd->flags & DPDK_DEVICE_FLAG_HQOS)) /* HQoS ON */ + { + /* no wrap, transmit in one burst */ + dpdk_device_hqos_per_worker_thread_t *hqos = + &xd->hqos_wt[vm->cpu_index]; + + ASSERT (hqos->swq != NULL); + + dpdk_hqos_metadata_set (hqos, + &tx_vector[tx_tail], tx_head - tx_tail); + rv = rte_ring_sp_enqueue_burst (hqos->swq, + (void **) &tx_vector[tx_tail], + (uint16_t) (tx_head - tx_tail)); + } + else if (PREDICT_TRUE (xd->flags & DPDK_DEVICE_FLAG_PMD)) + { + /* no wrap, transmit in one burst */ + rv = rte_eth_tx_burst (xd->device_index, + (uint16_t) queue_id, + &tx_vector[tx_tail], + (uint16_t) (tx_head - tx_tail)); + } + else + { + ASSERT (0); + rv = 0; + } + + if (PREDICT_FALSE (xd->lockp != 0)) + *xd->lockp[queue_id] = 0; + + if (PREDICT_FALSE (rv < 0)) + { + // emit non-fatal message, bump counter + vnet_main_t *vnm = dm->vnet_main; + vnet_interface_main_t *im = &vnm->interface_main; + u32 node_index; + + node_index = vec_elt_at_index (im->hw_interfaces, + xd->vlib_hw_if_index)->tx_node_index; + + vlib_error_count (vm, node_index, DPDK_TX_FUNC_ERROR_BAD_RETVAL, 1); + clib_warning ("rte_eth_tx_burst[%d]: error %d", xd->device_index, + rv); + return n_packets; // untransmitted packets + } + ring->tx_tail += (u16) rv; + n_packets -= (uint16_t) rv; + } + while (rv && n_packets && (n_retry > 0)); + + return n_packets; +} + +static_always_inline void +dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi) +{ + vlib_buffer_t *b; + struct rte_mbuf *mb; + b = vlib_get_buffer (vm, bi); + mb = rte_mbuf_from_vlib_buffer (b); + CLIB_PREFETCH (mb, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD); +} + +static_always_inline void +dpdk_buffer_recycle (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_buffer_t * b, u32 bi, struct rte_mbuf **mbp) +{ + dpdk_main_t *dm = &dpdk_main; + u32 my_cpu = vm->cpu_index; + struct rte_mbuf *mb_new; + + if (PREDICT_FALSE (b->flags & VLIB_BUFFER_RECYCLE) == 0) + return; + + mb_new = dpdk_replicate_packet_mb (b); + if (PREDICT_FALSE (mb_new == 0)) + { + vlib_error_count (vm, node->node_index, + DPDK_TX_FUNC_ERROR_REPL_FAIL, 1); + b->flags |= VLIB_BUFFER_REPL_FAIL; + } + else + *mbp = mb_new; + + vec_add1 (dm->recycle[my_cpu], bi); +} + +/* + * Transmits the packets on the frame to the interface associated with the + * node. It first copies packets on the frame to a tx_vector containing the + * rte_mbuf pointers. It then passes this vector to tx_burst_vector_internal + * which calls the dpdk tx_burst function. + */ +static uword +dpdk_interface_tx (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * f) +{ + dpdk_main_t *dm = &dpdk_main; + vnet_interface_output_runtime_t *rd = (void *) node->runtime_data; + dpdk_device_t *xd = vec_elt_at_index (dm->devices, rd->dev_instance); + u32 n_packets = f->n_vectors; + u32 n_left; + u32 *from; + struct rte_mbuf **tx_vector; + u16 i; + u16 nb_tx_desc = xd->nb_tx_desc; + int queue_id; + u32 my_cpu; + u32 tx_pkts = 0; + tx_ring_hdr_t *ring; + u32 n_on_ring; + + my_cpu = vm->cpu_index; + + queue_id = my_cpu; + + tx_vector = xd->tx_vectors[queue_id]; + ring = vec_header (tx_vector, sizeof (*ring)); + + n_on_ring = ring->tx_head - ring->tx_tail; + from = vlib_frame_vector_args (f); + + ASSERT (n_packets <= VLIB_FRAME_SIZE); + + if (PREDICT_FALSE (n_on_ring + n_packets > nb_tx_desc)) + { + /* + * Overflowing the ring should never happen. + * If it does then drop the whole frame. + */ + vlib_error_count (vm, node->node_index, DPDK_TX_FUNC_ERROR_RING_FULL, + n_packets); + + while (n_packets--) + { + u32 bi0 = from[n_packets]; + vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); + struct rte_mbuf *mb0 = rte_mbuf_from_vlib_buffer (b0); + rte_pktmbuf_free (mb0); + } + return n_on_ring; + } + + if (PREDICT_FALSE (dm->tx_pcap_enable)) + { + n_left = n_packets; + while (n_left > 0) + { + u32 bi0 = from[0]; + vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); + if (dm->pcap_sw_if_index == 0 || + dm->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_TX]) + pcap_add_buffer (&dm->pcap_main, vm, bi0, 512); + from++; + n_left--; + } + } + + from = vlib_frame_vector_args (f); + n_left = n_packets; + i = ring->tx_head % nb_tx_desc; + + while (n_left >= 8) + { + u32 bi0, bi1, bi2, bi3; + struct rte_mbuf *mb0, *mb1, *mb2, *mb3; + vlib_buffer_t *b0, *b1, *b2, *b3; + u32 or_flags; + + dpdk_prefetch_buffer_by_index (vm, from[4]); + dpdk_prefetch_buffer_by_index (vm, from[5]); + dpdk_prefetch_buffer_by_index (vm, from[6]); + dpdk_prefetch_buffer_by_index (vm, from[7]); + + bi0 = from[0]; + bi1 = from[1]; + bi2 = from[2]; + bi3 = from[3]; + from += 4; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + b2 = vlib_get_buffer (vm, bi2); + b3 = vlib_get_buffer (vm, bi3); + + or_flags = b0->flags | b1->flags | b2->flags | b3->flags; + + if (or_flags & VLIB_BUFFER_NEXT_PRESENT) + { + dpdk_validate_rte_mbuf (vm, b0, 1); + dpdk_validate_rte_mbuf (vm, b1, 1); + dpdk_validate_rte_mbuf (vm, b2, 1); + dpdk_validate_rte_mbuf (vm, b3, 1); + } + else + { + dpdk_validate_rte_mbuf (vm, b0, 0); + dpdk_validate_rte_mbuf (vm, b1, 0); + dpdk_validate_rte_mbuf (vm, b2, 0); + dpdk_validate_rte_mbuf (vm, b3, 0); + } + + mb0 = rte_mbuf_from_vlib_buffer (b0); + mb1 = rte_mbuf_from_vlib_buffer (b1); + mb2 = rte_mbuf_from_vlib_buffer (b2); + mb3 = rte_mbuf_from_vlib_buffer (b3); + + if (PREDICT_FALSE (or_flags & VLIB_BUFFER_RECYCLE)) + { + dpdk_buffer_recycle (vm, node, b0, bi0, &mb0); + dpdk_buffer_recycle (vm, node, b1, bi1, &mb1); + dpdk_buffer_recycle (vm, node, b2, bi2, &mb2); + dpdk_buffer_recycle (vm, node, b3, bi3, &mb3); + + /* dont enqueue packets if replication failed as they must + be sent back to recycle */ + if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_REPL_FAIL) == 0)) + tx_vector[i++ % nb_tx_desc] = mb0; + if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_REPL_FAIL) == 0)) + tx_vector[i++ % nb_tx_desc] = mb1; + if (PREDICT_TRUE ((b2->flags & VLIB_BUFFER_REPL_FAIL) == 0)) + tx_vector[i++ % nb_tx_desc] = mb2; + if (PREDICT_TRUE ((b3->flags & VLIB_BUFFER_REPL_FAIL) == 0)) + tx_vector[i++ % nb_tx_desc] = mb3; + } + else + { + if (PREDICT_FALSE (i + 3 >= nb_tx_desc)) + { + tx_vector[i++ % nb_tx_desc] = mb0; + tx_vector[i++ % nb_tx_desc] = mb1; + tx_vector[i++ % nb_tx_desc] = mb2; + tx_vector[i++ % nb_tx_desc] = mb3; + i %= nb_tx_desc; + } + else + { + tx_vector[i++] = mb0; + tx_vector[i++] = mb1; + tx_vector[i++] = mb2; + tx_vector[i++] = mb3; + } + } + + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) + { + if (b0->flags & VLIB_BUFFER_IS_TRACED) + dpdk_tx_trace_buffer (dm, node, xd, queue_id, bi0, b0); + if (b1->flags & VLIB_BUFFER_IS_TRACED) + dpdk_tx_trace_buffer (dm, node, xd, queue_id, bi1, b1); + if (b2->flags & VLIB_BUFFER_IS_TRACED) + dpdk_tx_trace_buffer (dm, node, xd, queue_id, bi2, b2); + if (b3->flags & VLIB_BUFFER_IS_TRACED) + dpdk_tx_trace_buffer (dm, node, xd, queue_id, bi3, b3); + } + + n_left -= 4; + } + while (n_left > 0) + { + u32 bi0; + struct rte_mbuf *mb0; + vlib_buffer_t *b0; + + bi0 = from[0]; + from++; + + b0 = vlib_get_buffer (vm, bi0); + + dpdk_validate_rte_mbuf (vm, b0, 1); + + mb0 = rte_mbuf_from_vlib_buffer (b0); + dpdk_buffer_recycle (vm, node, b0, bi0, &mb0); + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) + if (b0->flags & VLIB_BUFFER_IS_TRACED) + dpdk_tx_trace_buffer (dm, node, xd, queue_id, bi0, b0); + + if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_REPL_FAIL) == 0)) + { + tx_vector[i % nb_tx_desc] = mb0; + i++; + } + n_left--; + } + + /* account for additional packets in the ring */ + ring->tx_head += n_packets; + n_on_ring = ring->tx_head - ring->tx_tail; + + /* transmit as many packets as possible */ + n_packets = tx_burst_vector_internal (vm, xd, tx_vector); + + /* + * tx_pkts is the number of packets successfully transmitted + * This is the number originally on ring minus the number remaining on ring + */ + tx_pkts = n_on_ring - n_packets; + + { + /* If there is no callback then drop any non-transmitted packets */ + if (PREDICT_FALSE (n_packets)) + { + vlib_simple_counter_main_t *cm; + vnet_main_t *vnm = vnet_get_main (); + + cm = vec_elt_at_index (vnm->interface_main.sw_if_counters, + VNET_INTERFACE_COUNTER_TX_ERROR); + + vlib_increment_simple_counter (cm, my_cpu, xd->vlib_sw_if_index, + n_packets); + + vlib_error_count (vm, node->node_index, DPDK_TX_FUNC_ERROR_PKT_DROP, + n_packets); + + while (n_packets--) + rte_pktmbuf_free (tx_vector[ring->tx_tail + n_packets]); + } + + /* Reset head/tail to avoid unnecessary wrap */ + ring->tx_head = 0; + ring->tx_tail = 0; + } + + /* Recycle replicated buffers */ + if (PREDICT_FALSE (vec_len (dm->recycle[my_cpu]))) + { + vlib_buffer_free (vm, dm->recycle[my_cpu], + vec_len (dm->recycle[my_cpu])); + _vec_len (dm->recycle[my_cpu]) = 0; + } + + ASSERT (ring->tx_head >= ring->tx_tail); + + return tx_pkts; +} + +static void +dpdk_clear_hw_interface_counters (u32 instance) +{ + dpdk_main_t *dm = &dpdk_main; + dpdk_device_t *xd = vec_elt_at_index (dm->devices, instance); + + /* + * Set the "last_cleared_stats" to the current stats, so that + * things appear to clear from a display perspective. + */ + dpdk_update_counters (xd, vlib_time_now (dm->vlib_main)); + + clib_memcpy (&xd->last_cleared_stats, &xd->stats, sizeof (xd->stats)); + clib_memcpy (xd->last_cleared_xstats, xd->xstats, + vec_len (xd->last_cleared_xstats) * + sizeof (xd->last_cleared_xstats[0])); + +} + +static clib_error_t * +dpdk_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) +{ + vnet_hw_interface_t *hif = vnet_get_hw_interface (vnm, hw_if_index); + uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; + dpdk_main_t *dm = &dpdk_main; + dpdk_device_t *xd = vec_elt_at_index (dm->devices, hif->dev_instance); + int rv = 0; + + if (is_up) + { + f64 now = vlib_time_now (dm->vlib_main); + + if ((xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) == 0) + { + rv = rte_eth_dev_start (xd->device_index); + if (!rv && xd->default_mac_address) + rv = rte_eth_dev_default_mac_addr_set (xd->device_index, + (struct ether_addr *) + xd->default_mac_address); + } + + if (xd->flags & DPDK_DEVICE_FLAG_PROMISC) + rte_eth_promiscuous_enable (xd->device_index); + else + rte_eth_promiscuous_disable (xd->device_index); + + rte_eth_allmulticast_enable (xd->device_index); + xd->flags |= DPDK_DEVICE_FLAG_ADMIN_UP; + dpdk_update_counters (xd, now); + dpdk_update_link_state (xd, now); + } + else + { + xd->flags &= ~DPDK_DEVICE_FLAG_ADMIN_UP; + + rte_eth_allmulticast_disable (xd->device_index); + vnet_hw_interface_set_flags (vnm, xd->vlib_hw_if_index, 0); + rte_eth_dev_stop (xd->device_index); + + /* For bonded interface, stop slave links */ + if (xd->pmd == VNET_DPDK_PMD_BOND) + { + u8 slink[16]; + int nlink = rte_eth_bond_slaves_get (xd->device_index, slink, 16); + while (nlink >= 1) + { + u8 dpdk_port = slink[--nlink]; + rte_eth_dev_stop (dpdk_port); + } + } + } + + if (rv < 0) + clib_warning ("rte_eth_dev_%s error: %d", is_up ? "start" : "stop", rv); + + return /* no error */ 0; +} + +/* + * Dynamically redirect all pkts from a specific interface + * to the specified node + */ +static void +dpdk_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index, + u32 node_index) +{ + dpdk_main_t *xm = &dpdk_main; + vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); + dpdk_device_t *xd = vec_elt_at_index (xm->devices, hw->dev_instance); + + /* Shut off redirection */ + if (node_index == ~0) + { + xd->per_interface_next_index = node_index; + return; + } + + xd->per_interface_next_index = + vlib_node_add_next (xm->vlib_main, dpdk_input_node.index, node_index); +} + + +static clib_error_t * +dpdk_subif_add_del_function (vnet_main_t * vnm, + u32 hw_if_index, + struct vnet_sw_interface_t *st, int is_add) +{ + dpdk_main_t *xm = &dpdk_main; + vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); + dpdk_device_t *xd = vec_elt_at_index (xm->devices, hw->dev_instance); + vnet_sw_interface_t *t = (vnet_sw_interface_t *) st; + int r, vlan_offload; + u32 prev_subifs = xd->num_subifs; + clib_error_t *err = 0; + + if (is_add) + xd->num_subifs++; + else if (xd->num_subifs) + xd->num_subifs--; + + if ((xd->flags & DPDK_DEVICE_FLAG_PMD) == 0) + goto done; + + /* currently we program VLANS only for IXGBE VF and I40E VF */ + if ((xd->pmd != VNET_DPDK_PMD_IXGBEVF) && (xd->pmd != VNET_DPDK_PMD_I40EVF)) + goto done; + + if (t->sub.eth.flags.no_tags == 1) + goto done; + + if ((t->sub.eth.flags.one_tag != 1) || (t->sub.eth.flags.exact_match != 1)) + { + xd->num_subifs = prev_subifs; + err = clib_error_return (0, "unsupported VLAN setup"); + goto done; + } + + vlan_offload = rte_eth_dev_get_vlan_offload (xd->device_index); + vlan_offload |= ETH_VLAN_FILTER_OFFLOAD; + + if ((r = rte_eth_dev_set_vlan_offload (xd->device_index, vlan_offload))) + { + xd->num_subifs = prev_subifs; + err = clib_error_return (0, "rte_eth_dev_set_vlan_offload[%d]: err %d", + xd->device_index, r); + goto done; + } + + + if ((r = + rte_eth_dev_vlan_filter (xd->device_index, t->sub.eth.outer_vlan_id, + is_add))) + { + xd->num_subifs = prev_subifs; + err = clib_error_return (0, "rte_eth_dev_vlan_filter[%d]: err %d", + xd->device_index, r); + goto done; + } + +done: + if (xd->num_subifs) + xd->flags |= DPDK_DEVICE_FLAG_HAVE_SUBIF; + else + xd->flags &= ~DPDK_DEVICE_FLAG_HAVE_SUBIF; + + return err; +} + +/* *INDENT-OFF* */ +VNET_DEVICE_CLASS (dpdk_device_class) = { + .name = "dpdk", + .tx_function = dpdk_interface_tx, + .tx_function_n_errors = DPDK_TX_FUNC_N_ERROR, + .tx_function_error_strings = dpdk_tx_func_error_strings, + .format_device_name = format_dpdk_device_name, + .format_device = format_dpdk_device, + .format_tx_trace = format_dpdk_tx_dma_trace, + .clear_counters = dpdk_clear_hw_interface_counters, + .admin_up_down_function = dpdk_interface_admin_up_down, + .subif_add_del_function = dpdk_subif_add_del_function, + .rx_redirect_to_node = dpdk_set_interface_next_node, + .mac_addr_change_function = dpdk_set_mac_address, +}; + +VLIB_DEVICE_TX_FUNCTION_MULTIARCH (dpdk_device_class, dpdk_interface_tx) +/* *INDENT-ON* */ + +#define UP_DOWN_FLAG_EVENT 1 + +uword +admin_up_down_process (vlib_main_t * vm, + vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + clib_error_t *error = 0; + uword event_type; + uword *event_data = 0; + u32 sw_if_index; + u32 flags; + + while (1) + { + vlib_process_wait_for_event (vm); + + event_type = vlib_process_get_events (vm, &event_data); + + dpdk_main.admin_up_down_in_progress = 1; + + switch (event_type) + { + case UP_DOWN_FLAG_EVENT: + { + if (vec_len (event_data) == 2) + { + sw_if_index = event_data[0]; + flags = event_data[1]; + error = + vnet_sw_interface_set_flags (vnet_get_main (), sw_if_index, + flags); + clib_error_report (error); + } + } + break; + } + + vec_reset_length (event_data); + + dpdk_main.admin_up_down_in_progress = 0; + + } + return 0; /* or not */ +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (admin_up_down_process_node,static) = { + .function = admin_up_down_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "admin-up-down-process", + .process_log2_n_stack_bytes = 17, // 256KB +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |