svn commit: r354220 - in head/sys: dev/ena modules/ena
Marcin Wojtas
mw at FreeBSD.org
Thu Oct 31 15:44:27 UTC 2019
Author: mw
Date: Thu Oct 31 15:44:26 2019
New Revision: 354220
URL: https://svnweb.freebsd.org/changeset/base/354220
Log:
Split Rx/Tx from initialization code in ENA driver
Move Rx/Tx routines to separate file.
Some functions:
* ena_restore_device,
* ena_destroy_device,
* ena_up,
* ena_down,
* ena_refill_rx_bufs
could be reused in upcoming netmap code in the driver. To make it
possible, they were moved to ena.h header.
Differential Revision: https://reviews.freebsd.org/D21933
Submitted by: Rafal Kozik <rk at semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon, Inc.
Added:
head/sys/dev/ena/ena_datapath.c (contents, props changed)
head/sys/dev/ena/ena_datapath.h (contents, props changed)
Modified:
head/sys/dev/ena/ena.c
head/sys/dev/ena/ena.h
head/sys/modules/ena/Makefile
Modified: head/sys/dev/ena/ena.c
==============================================================================
--- head/sys/dev/ena/ena.c Thu Oct 31 15:39:54 2019 (r354219)
+++ head/sys/dev/ena/ena.c Thu Oct 31 15:44:26 2019 (r354220)
@@ -76,6 +76,7 @@ __FBSDID("$FreeBSD$");
#include <vm/vm.h>
#include <vm/pmap.h>
+#include "ena_datapath.h"
#include "ena.h"
#include "ena_sysctl.h"
@@ -102,7 +103,6 @@ static int ena_setup_tx_resources(struct ena_adapter *
static void ena_free_tx_resources(struct ena_adapter *, int);
static int ena_setup_all_tx_resources(struct ena_adapter *);
static void ena_free_all_tx_resources(struct ena_adapter *);
-static inline int validate_rx_req_id(struct ena_ring *, uint16_t);
static int ena_setup_rx_resources(struct ena_adapter *, unsigned int);
static void ena_free_rx_resources(struct ena_adapter *, unsigned int);
static int ena_setup_all_rx_resources(struct ena_adapter *);
@@ -111,7 +111,6 @@ static inline int ena_alloc_rx_mbuf(struct ena_adapter
struct ena_rx_buffer *);
static void ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *,
struct ena_rx_buffer *);
-static int ena_refill_rx_bufs(struct ena_ring *, uint32_t);
static void ena_free_rx_bufs(struct ena_adapter *, unsigned int);
static void ena_refill_all_rx_bufs(struct ena_adapter *);
static void ena_free_all_rx_bufs(struct ena_adapter *);
@@ -121,16 +120,6 @@ static void ena_destroy_all_tx_queues(struct ena_adapt
static void ena_destroy_all_rx_queues(struct ena_adapter *);
static void ena_destroy_all_io_queues(struct ena_adapter *);
static int ena_create_io_queues(struct ena_adapter *);
-static int ena_tx_cleanup(struct ena_ring *);
-static int ena_rx_cleanup(struct ena_ring *);
-static inline int validate_tx_req_id(struct ena_ring *, uint16_t);
-static void ena_rx_hash_mbuf(struct ena_ring *, struct ena_com_rx_ctx *,
- struct mbuf *);
-static struct mbuf* ena_rx_mbuf(struct ena_ring *, struct ena_com_rx_buf_info *,
- struct ena_com_rx_ctx *, uint16_t *);
-static inline void ena_rx_checksum(struct ena_ring *, struct ena_com_rx_ctx *,
- struct mbuf *);
-static void ena_cleanup(void *arg, int pending);
static int ena_handle_msix(void *);
static int ena_enable_msix(struct ena_adapter *);
static void ena_setup_mgmnt_intr(struct ena_adapter *);
@@ -144,8 +133,6 @@ static void ena_disable_msix(struct ena_adapter *);
static void ena_unmask_all_io_irqs(struct ena_adapter *);
static int ena_rss_configure(struct ena_adapter *);
static int ena_up_complete(struct ena_adapter *);
-static int ena_up(struct ena_adapter *);
-static void ena_down(struct ena_adapter *);
static uint64_t ena_get_counter(if_t, ift_counter);
static int ena_media_change(if_t);
static void ena_media_status(if_t, struct ifmediareq *);
@@ -156,15 +143,6 @@ static void ena_update_host_info(struct ena_admin_host
static void ena_update_hwassist(struct ena_adapter *);
static int ena_setup_ifnet(device_t, struct ena_adapter *,
struct ena_com_dev_get_features_ctx *);
-static void ena_tx_csum(struct ena_com_tx_ctx *, struct mbuf *);
-static int ena_check_and_collapse_mbuf(struct ena_ring *tx_ring,
- struct mbuf **mbuf);
-static void ena_dmamap_llq(void *, bus_dma_segment_t *, int, int);
-static int ena_xmit_mbuf(struct ena_ring *, struct mbuf **);
-static void ena_start_xmit(struct ena_ring *);
-static int ena_mq_start(if_t, struct mbuf *);
-static void ena_deferred_mq_start(void *, int);
-static void ena_qflush(if_t);
static int ena_enable_wc(struct resource *);
static int ena_set_queues_placement_policy(device_t, struct ena_com_dev *,
struct ena_admin_feature_llq_desc *, struct ena_llq_configurations *);
@@ -766,25 +744,6 @@ ena_free_all_tx_resources(struct ena_adapter *adapter)
ena_free_tx_resources(adapter, i);
}
-static inline int
-validate_rx_req_id(struct ena_ring *rx_ring, uint16_t req_id)
-{
- if (likely(req_id < rx_ring->ring_size))
- return (0);
-
- device_printf(rx_ring->adapter->pdev, "Invalid rx req_id: %hu\n",
- req_id);
- counter_u64_add(rx_ring->rx_stats.bad_req_id, 1);
-
- /* Trigger device reset */
- if (likely(!ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, rx_ring->adapter))) {
- rx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_RX_REQ_ID;
- ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, rx_ring->adapter);
- }
-
- return (EFAULT);
-}
-
/**
* ena_setup_rx_resources - allocate Rx resources (Descriptors)
* @adapter: network interface device structure
@@ -1024,7 +983,7 @@ ena_free_rx_mbuf(struct ena_adapter *adapter, struct e
* @num: number of descriptors to refill
* Refills the ring with newly allocated DMA-mapped mbufs for receiving
**/
-static int
+int
ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num)
{
struct ena_adapter *adapter = rx_ring->adapter;
@@ -1227,30 +1186,6 @@ ena_destroy_all_io_queues(struct ena_adapter *adapter)
ena_destroy_all_rx_queues(adapter);
}
-static inline int
-validate_tx_req_id(struct ena_ring *tx_ring, uint16_t req_id)
-{
- struct ena_adapter *adapter = tx_ring->adapter;
- struct ena_tx_buffer *tx_info = NULL;
-
- if (likely(req_id < tx_ring->ring_size)) {
- tx_info = &tx_ring->tx_buffer_info[req_id];
- if (tx_info->mbuf != NULL)
- return (0);
- device_printf(adapter->pdev,
- "tx_info doesn't have valid mbuf\n");
- }
-
- device_printf(adapter->pdev, "Invalid req_id: %hu\n", req_id);
- counter_u64_add(tx_ring->tx_stats.bad_req_id, 1);
-
- /* Trigger device reset */
- adapter->reset_reason = ENA_REGS_RESET_INV_TX_REQ_ID;
- ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
-
- return (EFAULT);
-}
-
static int
ena_create_io_queues(struct ena_adapter *adapter)
{
@@ -1344,475 +1279,6 @@ err_tx:
return (ENXIO);
}
-/**
- * ena_tx_cleanup - clear sent packets and corresponding descriptors
- * @tx_ring: ring for which we want to clean packets
- *
- * Once packets are sent, we ask the device in a loop for no longer used
- * descriptors. We find the related mbuf chain in a map (index in an array)
- * and free it, then update ring state.
- * This is performed in "endless" loop, updating ring pointers every
- * TX_COMMIT. The first check of free descriptor is performed before the actual
- * loop, then repeated at the loop end.
- **/
-static int
-ena_tx_cleanup(struct ena_ring *tx_ring)
-{
- struct ena_adapter *adapter;
- struct ena_com_io_cq* io_cq;
- uint16_t next_to_clean;
- uint16_t req_id;
- uint16_t ena_qid;
- unsigned int total_done = 0;
- int rc;
- int commit = TX_COMMIT;
- int budget = TX_BUDGET;
- int work_done;
- bool above_thresh;
-
- adapter = tx_ring->que->adapter;
- ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
- io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
- next_to_clean = tx_ring->next_to_clean;
-
- do {
- struct ena_tx_buffer *tx_info;
- struct mbuf *mbuf;
-
- rc = ena_com_tx_comp_req_id_get(io_cq, &req_id);
- if (unlikely(rc != 0))
- break;
-
- rc = validate_tx_req_id(tx_ring, req_id);
- if (unlikely(rc != 0))
- break;
-
- tx_info = &tx_ring->tx_buffer_info[req_id];
-
- mbuf = tx_info->mbuf;
-
- tx_info->mbuf = NULL;
- bintime_clear(&tx_info->timestamp);
-
- /* Map is no longer required */
- if (tx_info->head_mapped == true) {
- bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map_head,
- BUS_DMASYNC_POSTWRITE);
- bus_dmamap_unload(adapter->tx_buf_tag,
- tx_info->map_head);
- tx_info->head_mapped = false;
- }
- if (tx_info->seg_mapped == true) {
- bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map_seg,
- BUS_DMASYNC_POSTWRITE);
- bus_dmamap_unload(adapter->tx_buf_tag,
- tx_info->map_seg);
- tx_info->seg_mapped = false;
- }
-
- ena_trace(ENA_DBG | ENA_TXPTH, "tx: q %d mbuf %p completed\n",
- tx_ring->qid, mbuf);
-
- m_freem(mbuf);
-
- total_done += tx_info->tx_descs;
-
- tx_ring->free_tx_ids[next_to_clean] = req_id;
- next_to_clean = ENA_TX_RING_IDX_NEXT(next_to_clean,
- tx_ring->ring_size);
-
- if (unlikely(--commit == 0)) {
- commit = TX_COMMIT;
- /* update ring state every TX_COMMIT descriptor */
- tx_ring->next_to_clean = next_to_clean;
- ena_com_comp_ack(
- &adapter->ena_dev->io_sq_queues[ena_qid],
- total_done);
- ena_com_update_dev_comp_head(io_cq);
- total_done = 0;
- }
- } while (likely(--budget));
-
- work_done = TX_BUDGET - budget;
-
- ena_trace(ENA_DBG | ENA_TXPTH, "tx: q %d done. total pkts: %d\n",
- tx_ring->qid, work_done);
-
- /* If there is still something to commit update ring state */
- if (likely(commit != TX_COMMIT)) {
- tx_ring->next_to_clean = next_to_clean;
- ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid],
- total_done);
- ena_com_update_dev_comp_head(io_cq);
- }
-
- /*
- * Need to make the rings circular update visible to
- * ena_xmit_mbuf() before checking for tx_ring->running.
- */
- mb();
-
- above_thresh = ena_com_sq_have_enough_space(tx_ring->ena_com_io_sq,
- ENA_TX_RESUME_THRESH);
- if (unlikely(!tx_ring->running && above_thresh)) {
- ENA_RING_MTX_LOCK(tx_ring);
- above_thresh =
- ena_com_sq_have_enough_space(tx_ring->ena_com_io_sq,
- ENA_TX_RESUME_THRESH);
- if (!tx_ring->running && above_thresh) {
- tx_ring->running = true;
- counter_u64_add(tx_ring->tx_stats.queue_wakeup, 1);
- taskqueue_enqueue(tx_ring->enqueue_tq,
- &tx_ring->enqueue_task);
- }
- ENA_RING_MTX_UNLOCK(tx_ring);
- }
-
- return (work_done);
-}
-
-static void
-ena_rx_hash_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
- struct mbuf *mbuf)
-{
- struct ena_adapter *adapter = rx_ring->adapter;
-
- if (likely(ENA_FLAG_ISSET(ENA_FLAG_RSS_ACTIVE, adapter))) {
- mbuf->m_pkthdr.flowid = ena_rx_ctx->hash;
-
- if (ena_rx_ctx->frag &&
- (ena_rx_ctx->l3_proto != ENA_ETH_IO_L3_PROTO_UNKNOWN)) {
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
- return;
- }
-
- switch (ena_rx_ctx->l3_proto) {
- case ENA_ETH_IO_L3_PROTO_IPV4:
- switch (ena_rx_ctx->l4_proto) {
- case ENA_ETH_IO_L4_PROTO_TCP:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4);
- break;
- case ENA_ETH_IO_L4_PROTO_UDP:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4);
- break;
- default:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4);
- }
- break;
- case ENA_ETH_IO_L3_PROTO_IPV6:
- switch (ena_rx_ctx->l4_proto) {
- case ENA_ETH_IO_L4_PROTO_TCP:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6);
- break;
- case ENA_ETH_IO_L4_PROTO_UDP:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6);
- break;
- default:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6);
- }
- break;
- case ENA_ETH_IO_L3_PROTO_UNKNOWN:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
- break;
- default:
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
- }
- } else {
- mbuf->m_pkthdr.flowid = rx_ring->qid;
- M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
- }
-}
-
-/**
- * ena_rx_mbuf - assemble mbuf from descriptors
- * @rx_ring: ring for which we want to clean packets
- * @ena_bufs: buffer info
- * @ena_rx_ctx: metadata for this packet(s)
- * @next_to_clean: ring pointer, will be updated only upon success
- *
- **/
-static struct mbuf*
-ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
- struct ena_com_rx_ctx *ena_rx_ctx, uint16_t *next_to_clean)
-{
- struct mbuf *mbuf;
- struct ena_rx_buffer *rx_info;
- struct ena_adapter *adapter;
- unsigned int descs = ena_rx_ctx->descs;
- int rc;
- uint16_t ntc, len, req_id, buf = 0;
-
- ntc = *next_to_clean;
- adapter = rx_ring->adapter;
-
- len = ena_bufs[buf].len;
- req_id = ena_bufs[buf].req_id;
- rc = validate_rx_req_id(rx_ring, req_id);
- if (unlikely(rc != 0))
- return (NULL);
-
- rx_info = &rx_ring->rx_buffer_info[req_id];
- if (unlikely(rx_info->mbuf == NULL)) {
- device_printf(adapter->pdev, "NULL mbuf in rx_info");
- return (NULL);
- }
-
- ena_trace(ENA_DBG | ENA_RXPTH, "rx_info %p, mbuf %p, paddr %jx\n",
- rx_info, rx_info->mbuf, (uintmax_t)rx_info->ena_buf.paddr);
-
- bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map,
- BUS_DMASYNC_POSTREAD);
- mbuf = rx_info->mbuf;
- mbuf->m_flags |= M_PKTHDR;
- mbuf->m_pkthdr.len = len;
- mbuf->m_len = len;
- mbuf->m_pkthdr.rcvif = rx_ring->que->adapter->ifp;
-
- /* Fill mbuf with hash key and it's interpretation for optimization */
- ena_rx_hash_mbuf(rx_ring, ena_rx_ctx, mbuf);
-
- ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf 0x%p, flags=0x%x, len: %d\n",
- mbuf, mbuf->m_flags, mbuf->m_pkthdr.len);
-
- /* DMA address is not needed anymore, unmap it */
- bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
-
- rx_info->mbuf = NULL;
- rx_ring->free_rx_ids[ntc] = req_id;
- ntc = ENA_RX_RING_IDX_NEXT(ntc, rx_ring->ring_size);
-
- /*
- * While we have more than 1 descriptors for one rcvd packet, append
- * other mbufs to the main one
- */
- while (--descs) {
- ++buf;
- len = ena_bufs[buf].len;
- req_id = ena_bufs[buf].req_id;
- rc = validate_rx_req_id(rx_ring, req_id);
- if (unlikely(rc != 0)) {
- /*
- * If the req_id is invalid, then the device will be
- * reset. In that case we must free all mbufs that
- * were already gathered.
- */
- m_freem(mbuf);
- return (NULL);
- }
- rx_info = &rx_ring->rx_buffer_info[req_id];
-
- if (unlikely(rx_info->mbuf == NULL)) {
- device_printf(adapter->pdev, "NULL mbuf in rx_info");
- /*
- * If one of the required mbufs was not allocated yet,
- * we can break there.
- * All earlier used descriptors will be reallocated
- * later and not used mbufs can be reused.
- * The next_to_clean pointer will not be updated in case
- * of an error, so caller should advance it manually
- * in error handling routine to keep it up to date
- * with hw ring.
- */
- m_freem(mbuf);
- return (NULL);
- }
-
- bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map,
- BUS_DMASYNC_POSTREAD);
- if (unlikely(m_append(mbuf, len, rx_info->mbuf->m_data) == 0)) {
- counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1);
- ena_trace(ENA_WARNING, "Failed to append Rx mbuf %p\n",
- mbuf);
- }
-
- ena_trace(ENA_DBG | ENA_RXPTH,
- "rx mbuf updated. len %d\n", mbuf->m_pkthdr.len);
-
- /* Free already appended mbuf, it won't be useful anymore */
- bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
- m_freem(rx_info->mbuf);
- rx_info->mbuf = NULL;
-
- rx_ring->free_rx_ids[ntc] = req_id;
- ntc = ENA_RX_RING_IDX_NEXT(ntc, rx_ring->ring_size);
- }
-
- *next_to_clean = ntc;
-
- return (mbuf);
-}
-
-/**
- * ena_rx_checksum - indicate in mbuf if hw indicated a good cksum
- **/
-static inline void
-ena_rx_checksum(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
- struct mbuf *mbuf)
-{
-
- /* if IP and error */
- if (unlikely((ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) &&
- ena_rx_ctx->l3_csum_err)) {
- /* ipv4 checksum error */
- mbuf->m_pkthdr.csum_flags = 0;
- counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
- ena_trace(ENA_DBG, "RX IPv4 header checksum error\n");
- return;
- }
-
- /* if TCP/UDP */
- if ((ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP) ||
- (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)) {
- if (ena_rx_ctx->l4_csum_err) {
- /* TCP/UDP checksum error */
- mbuf->m_pkthdr.csum_flags = 0;
- counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
- ena_trace(ENA_DBG, "RX L4 checksum error\n");
- } else {
- mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
- mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID;
- }
- }
-}
-
-/**
- * ena_rx_cleanup - handle rx irq
- * @arg: ring for which irq is being handled
- **/
-static int
-ena_rx_cleanup(struct ena_ring *rx_ring)
-{
- struct ena_adapter *adapter;
- struct mbuf *mbuf;
- struct ena_com_rx_ctx ena_rx_ctx;
- struct ena_com_io_cq* io_cq;
- struct ena_com_io_sq* io_sq;
- if_t ifp;
- uint16_t ena_qid;
- uint16_t next_to_clean;
- uint32_t refill_required;
- uint32_t refill_threshold;
- uint32_t do_if_input = 0;
- unsigned int qid;
- int rc, i;
- int budget = RX_BUDGET;
-
- adapter = rx_ring->que->adapter;
- ifp = adapter->ifp;
- qid = rx_ring->que->id;
- ena_qid = ENA_IO_RXQ_IDX(qid);
- io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
- io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
- next_to_clean = rx_ring->next_to_clean;
-
- ena_trace(ENA_DBG, "rx: qid %d\n", qid);
-
- do {
- ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
- ena_rx_ctx.max_bufs = adapter->max_rx_sgl_size;
- ena_rx_ctx.descs = 0;
- bus_dmamap_sync(io_cq->cdesc_addr.mem_handle.tag,
- io_cq->cdesc_addr.mem_handle.map, BUS_DMASYNC_POSTREAD);
- rc = ena_com_rx_pkt(io_cq, io_sq, &ena_rx_ctx);
-
- if (unlikely(rc != 0))
- goto error;
-
- if (unlikely(ena_rx_ctx.descs == 0))
- break;
-
- ena_trace(ENA_DBG | ENA_RXPTH, "rx: q %d got packet from ena. "
- "descs #: %d l3 proto %d l4 proto %d hash: %x\n",
- rx_ring->qid, ena_rx_ctx.descs, ena_rx_ctx.l3_proto,
- ena_rx_ctx.l4_proto, ena_rx_ctx.hash);
-
- /* Receive mbuf from the ring */
- mbuf = ena_rx_mbuf(rx_ring, rx_ring->ena_bufs,
- &ena_rx_ctx, &next_to_clean);
- bus_dmamap_sync(io_cq->cdesc_addr.mem_handle.tag,
- io_cq->cdesc_addr.mem_handle.map, BUS_DMASYNC_PREREAD);
- /* Exit if we failed to retrieve a buffer */
- if (unlikely(mbuf == NULL)) {
- for (i = 0; i < ena_rx_ctx.descs; ++i) {
- rx_ring->free_rx_ids[next_to_clean] =
- rx_ring->ena_bufs[i].req_id;
- next_to_clean =
- ENA_RX_RING_IDX_NEXT(next_to_clean,
- rx_ring->ring_size);
-
- }
- break;
- }
-
- if (((ifp->if_capenable & IFCAP_RXCSUM) != 0) ||
- ((ifp->if_capenable & IFCAP_RXCSUM_IPV6) != 0)) {
- ena_rx_checksum(rx_ring, &ena_rx_ctx, mbuf);
- }
-
- counter_enter();
- counter_u64_add_protected(rx_ring->rx_stats.bytes,
- mbuf->m_pkthdr.len);
- counter_u64_add_protected(adapter->hw_stats.rx_bytes,
- mbuf->m_pkthdr.len);
- counter_exit();
- /*
- * LRO is only for IP/TCP packets and TCP checksum of the packet
- * should be computed by hardware.
- */
- do_if_input = 1;
- if (((ifp->if_capenable & IFCAP_LRO) != 0) &&
- ((mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) != 0) &&
- (ena_rx_ctx.l4_proto == ENA_ETH_IO_L4_PROTO_TCP)) {
- /*
- * Send to the stack if:
- * - LRO not enabled, or
- * - no LRO resources, or
- * - lro enqueue fails
- */
- if ((rx_ring->lro.lro_cnt != 0) &&
- (tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0))
- do_if_input = 0;
- }
- if (do_if_input != 0) {
- ena_trace(ENA_DBG | ENA_RXPTH,
- "calling if_input() with mbuf %p\n", mbuf);
- (*ifp->if_input)(ifp, mbuf);
- }
-
- counter_enter();
- counter_u64_add_protected(rx_ring->rx_stats.cnt, 1);
- counter_u64_add_protected(adapter->hw_stats.rx_packets, 1);
- counter_exit();
- } while (--budget);
-
- rx_ring->next_to_clean = next_to_clean;
-
- refill_required = ena_com_free_desc(io_sq);
- refill_threshold = min_t(int,
- rx_ring->ring_size / ENA_RX_REFILL_THRESH_DIVIDER,
- ENA_RX_REFILL_THRESH_PACKET);
-
- if (refill_required > refill_threshold) {
- ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq);
- ena_refill_rx_bufs(rx_ring, refill_required);
- }
-
- tcp_lro_flush_all(&rx_ring->lro);
-
- return (RX_BUDGET - budget);
-
-error:
- counter_u64_add(rx_ring->rx_stats.bad_desc_num, 1);
-
- /* Too many desc from the device. Trigger reset */
- if (likely(!ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter))) {
- adapter->reset_reason = ENA_REGS_RESET_TOO_MANY_RX_DESCS;
- ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
- }
-
- return (0);
-}
-
/*********************************************************************
*
* MSIX & Interrupt Service routine
@@ -1833,52 +1299,6 @@ ena_intr_msix_mgmnt(void *arg)
ena_com_aenq_intr_handler(adapter->ena_dev, arg);
}
-static void
-ena_cleanup(void *arg, int pending)
-{
- struct ena_que *que = arg;
- struct ena_adapter *adapter = que->adapter;
- if_t ifp = adapter->ifp;
- struct ena_ring *tx_ring;
- struct ena_ring *rx_ring;
- struct ena_com_io_cq* io_cq;
- struct ena_eth_io_intr_reg intr_reg;
- int qid, ena_qid;
- int txc, rxc, i;
-
- if (unlikely((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0))
- return;
-
- ena_trace(ENA_DBG, "MSI-X TX/RX routine\n");
-
- tx_ring = que->tx_ring;
- rx_ring = que->rx_ring;
- qid = que->id;
- ena_qid = ENA_IO_TXQ_IDX(qid);
- io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
-
- tx_ring->first_interrupt = true;
- rx_ring->first_interrupt = true;
-
- for (i = 0; i < CLEAN_BUDGET; ++i) {
- rxc = ena_rx_cleanup(rx_ring);
- txc = ena_tx_cleanup(tx_ring);
-
- if (unlikely((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0))
- return;
-
- if ((txc != TX_BUDGET) && (rxc != RX_BUDGET))
- break;
- }
-
- /* Signal that work is done and unmask interrupt */
- ena_com_update_intr_reg(&intr_reg,
- RX_IRQ_INTERVAL,
- TX_IRQ_INTERVAL,
- true);
- ena_com_unmask_intr(io_cq, &intr_reg);
-}
-
/**
* ena_handle_msix - MSIX Interrupt Handler for Tx/Rx
* @arg: queue
@@ -2289,7 +1709,7 @@ ena_up_complete(struct ena_adapter *adapter)
return (0);
}
-static int
+int
ena_up(struct ena_adapter *adapter)
{
int rc = 0;
@@ -2666,7 +2086,7 @@ ena_setup_ifnet(device_t pdev, struct ena_adapter *ada
return (0);
}
-static void
+void
ena_down(struct ena_adapter *adapter)
{
int rc;
@@ -2701,579 +2121,7 @@ ena_down(struct ena_adapter *adapter)
}
}
-static void
-ena_tx_csum(struct ena_com_tx_ctx *ena_tx_ctx, struct mbuf *mbuf)
-{
- struct ena_com_tx_meta *ena_meta;
- struct ether_vlan_header *eh;
- struct mbuf *mbuf_next;
- u32 mss;
- bool offload;
- uint16_t etype;
- int ehdrlen;
- struct ip *ip;
- int iphlen;
- struct tcphdr *th;
- int offset;
-
- offload = false;
- ena_meta = &ena_tx_ctx->ena_meta;
- mss = mbuf->m_pkthdr.tso_segsz;
-
- if (mss != 0)
- offload = true;
-
- if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0)
- offload = true;
-
- if ((mbuf->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0)
- offload = true;
-
- if (!offload) {
- ena_tx_ctx->meta_valid = 0;
- return;
- }
-
- /* Determine where frame payload starts. */
- eh = mtod(mbuf, struct ether_vlan_header *);
- if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
- etype = ntohs(eh->evl_proto);
- ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
- } else {
- etype = ntohs(eh->evl_encap_proto);
- ehdrlen = ETHER_HDR_LEN;
- }
-
- mbuf_next = m_getptr(mbuf, ehdrlen, &offset);
- ip = (struct ip *)(mtodo(mbuf_next, offset));
- iphlen = ip->ip_hl << 2;
-
- mbuf_next = m_getptr(mbuf, iphlen + ehdrlen, &offset);
- th = (struct tcphdr *)(mtodo(mbuf_next, offset));
-
- if ((mbuf->m_pkthdr.csum_flags & CSUM_IP) != 0) {
- ena_tx_ctx->l3_csum_enable = 1;
- }
- if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
- ena_tx_ctx->tso_enable = 1;
- ena_meta->l4_hdr_len = (th->th_off);
- }
-
- switch (etype) {
- case ETHERTYPE_IP:
- ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
- if ((ip->ip_off & htons(IP_DF)) != 0)
- ena_tx_ctx->df = 1;
- break;
- case ETHERTYPE_IPV6:
- ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
-
- default:
- break;
- }
-
- if (ip->ip_p == IPPROTO_TCP) {
- ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
- if ((mbuf->m_pkthdr.csum_flags &
- (CSUM_IP_TCP | CSUM_IP6_TCP)) != 0)
- ena_tx_ctx->l4_csum_enable = 1;
- else
- ena_tx_ctx->l4_csum_enable = 0;
- } else if (ip->ip_p == IPPROTO_UDP) {
- ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
- if ((mbuf->m_pkthdr.csum_flags &
- (CSUM_IP_UDP | CSUM_IP6_UDP)) != 0)
- ena_tx_ctx->l4_csum_enable = 1;
- else
- ena_tx_ctx->l4_csum_enable = 0;
- } else {
- ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
- ena_tx_ctx->l4_csum_enable = 0;
- }
-
- ena_meta->mss = mss;
- ena_meta->l3_hdr_len = iphlen;
- ena_meta->l3_hdr_offset = ehdrlen;
- ena_tx_ctx->meta_valid = 1;
-}
-
static int
-ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
-{
- struct ena_adapter *adapter;
- struct mbuf *collapsed_mbuf;
- int num_frags;
-
- adapter = tx_ring->adapter;
- num_frags = ena_mbuf_count(*mbuf);
-
- /* One segment must be reserved for configuration descriptor. */
- if (num_frags < adapter->max_tx_sgl_size)
- return (0);
- counter_u64_add(tx_ring->tx_stats.collapse, 1);
-
- collapsed_mbuf = m_collapse(*mbuf, M_NOWAIT,
- adapter->max_tx_sgl_size - 1);
- if (unlikely(collapsed_mbuf == NULL)) {
- counter_u64_add(tx_ring->tx_stats.collapse_err, 1);
- return (ENOMEM);
- }
-
- /* If mbuf was collapsed succesfully, original mbuf is released. */
- *mbuf = collapsed_mbuf;
-
- return (0);
-}
-
-static void
-ena_dmamap_llq(void *arg, bus_dma_segment_t *segs, int nseg, int error)
-{
- struct ena_com_buf *ena_buf = arg;
-
- if (unlikely(error != 0)) {
- ena_buf->paddr = 0;
- return;
- }
-
- KASSERT(nseg == 1, ("Invalid num of segments for LLQ dma"));
-
- ena_buf->paddr = segs->ds_addr;
- ena_buf->len = segs->ds_len;
-}
-
-static int
-ena_tx_map_mbuf(struct ena_ring *tx_ring, struct ena_tx_buffer *tx_info,
- struct mbuf *mbuf, void **push_hdr, u16 *header_len)
-{
- struct ena_adapter *adapter = tx_ring->adapter;
- struct ena_com_buf *ena_buf;
- bus_dma_segment_t segs[ENA_BUS_DMA_SEGS];
- uint32_t mbuf_head_len, frag_len;
- uint16_t push_len = 0;
- uint16_t delta = 0;
- int i, rc, nsegs;
-
- mbuf_head_len = mbuf->m_len;
- tx_info->mbuf = mbuf;
- ena_buf = tx_info->bufs;
-
- if (tx_ring->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
- /*
- * When the device is LLQ mode, the driver will copy
- * the header into the device memory space.
- * the ena_com layer assumes the header is in a linear
- * memory space.
- * This assumption might be wrong since part of the header
- * can be in the fragmented buffers.
- * First check if header fits in the mbuf. If not, copy it to
- * separate buffer that will be holding linearized data.
- */
- push_len = min_t(uint32_t, mbuf->m_pkthdr.len,
- tx_ring->tx_max_header_size);
- *header_len = push_len;
- /* If header is in linear space, just point into mbuf's data. */
- if (likely(push_len <= mbuf_head_len)) {
- *push_hdr = mbuf->m_data;
- /*
- * Otherwise, copy whole portion of header from multiple mbufs
- * to intermediate buffer.
- */
- } else {
- m_copydata(mbuf, 0, push_len,
- tx_ring->push_buf_intermediate_buf);
- *push_hdr = tx_ring->push_buf_intermediate_buf;
-
- counter_u64_add(tx_ring->tx_stats.llq_buffer_copy, 1);
- delta = push_len - mbuf_head_len;
- }
-
- ena_trace(ENA_DBG | ENA_TXPTH,
- "mbuf: %p header_buf->vaddr: %p push_len: %d\n",
- mbuf, *push_hdr, push_len);
-
- /*
- * If header was in linear memory space, map for the dma rest of the data
- * in the first mbuf of the mbuf chain.
- */
- if (mbuf_head_len > push_len) {
- rc = bus_dmamap_load(adapter->tx_buf_tag,
- tx_info->map_head,
- mbuf->m_data + push_len, mbuf_head_len - push_len,
- ena_dmamap_llq, ena_buf, BUS_DMA_NOWAIT);
- if (unlikely((rc != 0) || (ena_buf->paddr == 0)))
- goto single_dma_error;
-
- ena_buf++;
- tx_info->num_of_bufs++;
-
- tx_info->head_mapped = true;
- }
- mbuf = mbuf->m_next;
- } else {
- *push_hdr = NULL;
- /*
- * header_len is just a hint for the device. Because FreeBSD is not
- * giving us information about packet header length and it is not
- * guaranteed that all packet headers will be in the 1st mbuf, setting
- * header_len to 0 is making the device ignore this value and resolve
- * header on it's own.
- */
- *header_len = 0;
- }
-
- /*
- * If header is in non linear space (delta > 0), then skip mbufs
- * containing header and map the last one containing both header and the
- * packet data.
- * The first segment is already counted in.
- * If LLQ is not supported, the loop will be skipped.
- */
- while (delta > 0) {
- frag_len = mbuf->m_len;
-
- /*
- * If whole segment contains header just move to the
- * next one and reduce delta.
- */
- if (unlikely(delta >= frag_len)) {
- delta -= frag_len;
- } else {
- /*
- * Map rest of the packet data that was contained in
- * the mbuf.
- */
- rc = bus_dmamap_load(adapter->tx_buf_tag,
- tx_info->map_head, mbuf->m_data + delta,
- frag_len - delta, ena_dmamap_llq, ena_buf,
- BUS_DMA_NOWAIT);
- if (unlikely((rc != 0) || (ena_buf->paddr == 0)))
- goto single_dma_error;
-
- ena_buf++;
- tx_info->num_of_bufs++;
- tx_info->head_mapped = true;
-
- delta = 0;
- }
-
- mbuf = mbuf->m_next;
- }
-
- if (mbuf == NULL) {
- return (0);
- }
-
- /* Map rest of the mbufs */
- rc = bus_dmamap_load_mbuf_sg(adapter->tx_buf_tag, tx_info->map_seg, mbuf,
- segs, &nsegs, BUS_DMA_NOWAIT);
- if (unlikely((rc != 0) || (nsegs == 0))) {
- ena_trace(ENA_WARNING,
- "dmamap load failed! err: %d nsegs: %d\n", rc, nsegs);
- goto dma_error;
- }
-
- for (i = 0; i < nsegs; i++) {
- ena_buf->len = segs[i].ds_len;
- ena_buf->paddr = segs[i].ds_addr;
- ena_buf++;
- }
- tx_info->num_of_bufs += nsegs;
- tx_info->seg_mapped = true;
-
- return (0);
-
-dma_error:
- if (tx_info->head_mapped == true)
- bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map_head);
-single_dma_error:
- counter_u64_add(tx_ring->tx_stats.dma_mapping_err, 1);
- tx_info->mbuf = NULL;
- return (rc);
-}
-
-static int
-ena_xmit_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
-{
- struct ena_adapter *adapter;
- struct ena_tx_buffer *tx_info;
- struct ena_com_tx_ctx ena_tx_ctx;
- struct ena_com_dev *ena_dev;
- struct ena_com_io_sq* io_sq;
- void *push_hdr;
- uint16_t next_to_use;
- uint16_t req_id;
- uint16_t ena_qid;
- uint16_t header_len;
- int rc;
- int nb_hw_desc;
-
- ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
- adapter = tx_ring->que->adapter;
- ena_dev = adapter->ena_dev;
- io_sq = &ena_dev->io_sq_queues[ena_qid];
-
- rc = ena_check_and_collapse_mbuf(tx_ring, mbuf);
- if (unlikely(rc != 0)) {
- ena_trace(ENA_WARNING,
- "Failed to collapse mbuf! err: %d\n", rc);
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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