static int
sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
{
int rc = 0;
switch (txmode->mq_mode) {
case ETH_MQ_TX_NONE:
break;
default:
sfc_err(sa, "Tx multi-queue mode %u not supported",
txmode->mq_mode);
rc = EINVAL;
}
/*
* These features are claimed to be i40e-specific,
* but it does make sense to double-check their absence
*/
if (txmode->hw_vlan_reject_tagged) {
sfc_err(sa, "Rejecting tagged packets not supported");
rc = EINVAL;
}
if (txmode->hw_vlan_reject_untagged) {
sfc_err(sa, "Rejecting untagged packets not supported");
rc = EINVAL;
}
if (txmode->hw_vlan_insert_pvid) {
sfc_err(sa, "Port-based VLAN insertion not supported");
rc = EINVAL;
}
return rc;
}
void
sfc_ev_qpoll(struct sfc_evq *evq)
{
SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED ||
evq->init_state == SFC_EVQ_STARTING);
/* Synchronize the DMA memory for reading not required */
efx_ev_qpoll(evq->common, &evq->read_ptr, evq->callbacks, evq);
if (unlikely(evq->exception) && sfc_adapter_trylock(evq->sa)) {
struct sfc_adapter *sa = evq->sa;
int rc;
if (evq->dp_rxq != NULL) {
unsigned int rxq_sw_index;
rxq_sw_index = evq->dp_rxq->dpq.queue_id;
sfc_warn(sa,
"restart RxQ %u because of exception on its EvQ %u",
rxq_sw_index, evq->evq_index);
sfc_rx_qstop(sa, rxq_sw_index);
rc = sfc_rx_qstart(sa, rxq_sw_index);
if (rc != 0)
sfc_err(sa, "cannot restart RxQ %u",
rxq_sw_index);
}
if (evq->dp_txq != NULL) {
unsigned int txq_sw_index;
txq_sw_index = evq->dp_txq->dpq.queue_id;
sfc_warn(sa,
"restart TxQ %u because of exception on its EvQ %u",
txq_sw_index, evq->evq_index);
sfc_tx_qstop(sa, txq_sw_index);
rc = sfc_tx_qstart(sa, txq_sw_index);
if (rc != 0)
sfc_err(sa, "cannot restart TxQ %u",
txq_sw_index);
}
if (evq->exception)
sfc_panic(sa, "unrecoverable exception on EvQ %u",
evq->evq_index);
sfc_adapter_unlock(sa);
}
/* Poll-mode driver does not re-prime the event queue for interrupts */
}
static boolean_t
sfc_ev_nop_tx(void *arg, uint32_t label, uint32_t id)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected Tx event label=%u id=%#x",
evq->evq_index, label, id);
return B_TRUE;
}
static boolean_t
sfc_ev_nop_link_change(void *arg, __rte_unused efx_link_mode_t link_mode)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected link change event",
evq->evq_index);
return B_TRUE;
}
static boolean_t
sfc_ev_timer(void *arg, uint32_t index)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected timer event index=%u",
evq->evq_index, index);
return B_TRUE;
}
static boolean_t
sfc_ev_sram(void *arg, uint32_t code)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected SRAM event code=%u",
evq->evq_index, code);
return B_TRUE;
}
static boolean_t
sfc_ev_software(void *arg, uint16_t magic)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected software event magic=%#.4x",
evq->evq_index, magic);
return B_TRUE;
}
static boolean_t
sfc_ev_nop_txq_flush_done(void *arg, uint32_t txq_hw_index)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected TxQ %u flush done",
evq->evq_index, txq_hw_index);
return B_TRUE;
}
static boolean_t
sfc_ev_nop_rxq_flush_failed(void *arg, uint32_t rxq_hw_index)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush failed",
evq->evq_index, rxq_hw_index);
return B_TRUE;
}
static boolean_t
sfc_ev_nop_rx(void *arg, uint32_t label, uint32_t id,
uint32_t size, uint16_t flags)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa,
"EVQ %u unexpected Rx event label=%u id=%#x size=%u flags=%#x",
evq->evq_index, label, id, size, flags);
return B_TRUE;
}
static boolean_t
sfc_ev_nop_rx_ps(void *arg, uint32_t label, uint32_t id,
uint32_t pkt_count, uint16_t flags)
{
struct sfc_evq *evq = arg;
sfc_err(evq->sa,
"EVQ %u unexpected packed stream Rx event label=%u id=%#x pkt_count=%u flags=%#x",
evq->evq_index, label, id, pkt_count, flags);
return B_TRUE;
}
void
sfc_ev_detach(struct sfc_adapter *sa)
{
sfc_log_init(sa, "entry");
sfc_ev_qfini(sa->mgmt_evq);
if (sa->evq_count != 0)
sfc_err(sa, "%u EvQs are not destroyed before detach",
sa->evq_count);
}
static void
sfc_ev_mgmt_periodic_qpoll(void *arg)
{
struct sfc_adapter *sa = arg;
int rc;
sfc_ev_mgmt_qpoll(sa);
rc = rte_eal_alarm_set(SFC_MGMT_EV_QPOLL_PERIOD_US,
sfc_ev_mgmt_periodic_qpoll, sa);
if (rc == -ENOTSUP) {
sfc_warn(sa, "alarms are not supported");
sfc_warn(sa, "management EVQ must be polled indirectly using no-wait link status update");
} else if (rc != 0) {
sfc_err(sa,
"cannot rearm management EVQ polling alarm (rc=%d)",
rc);
}
}
int
sfc_ev_attach(struct sfc_adapter *sa)
{
int rc;
sfc_log_init(sa, "entry");
sa->evq_flags = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
rc = sfc_kvargs_process(sa, SFC_KVARG_PERF_PROFILE,
sfc_kvarg_perf_profile_handler,
&sa->evq_flags);
if (rc != 0) {
sfc_err(sa, "invalid %s parameter value",
SFC_KVARG_PERF_PROFILE);
goto fail_kvarg_perf_profile;
}
sa->mgmt_evq_index = 0;
rte_spinlock_init(&sa->mgmt_evq_lock);
rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_MGMT, 0, SFC_MGMT_EVQ_ENTRIES,
sa->socket_id, &sa->mgmt_evq);
if (rc != 0)
goto fail_mgmt_evq_init;
/*
* Rx/Tx event queues are created/destroyed when corresponding
* Rx/Tx queue is created/destroyed.
*/
return 0;
fail_mgmt_evq_init:
fail_kvarg_perf_profile:
sfc_log_init(sa, "failed %d", rc);
return rc;
}
static int
sfc_tx_qcheck_conf(struct sfc_adapter *sa, uint16_t nb_tx_desc,
const struct rte_eth_txconf *tx_conf)
{
unsigned int flags = tx_conf->txq_flags;
const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
int rc = 0;
if (tx_conf->tx_rs_thresh != 0) {
sfc_err(sa, "RS bit in transmit descriptor is not supported");
rc = EINVAL;
}
if (tx_conf->tx_free_thresh > EFX_TXQ_LIMIT(nb_tx_desc)) {
sfc_err(sa,
"TxQ free threshold too large: %u vs maximum %u",
tx_conf->tx_free_thresh, EFX_TXQ_LIMIT(nb_tx_desc));
rc = EINVAL;
}
if (tx_conf->tx_thresh.pthresh != 0 ||
tx_conf->tx_thresh.hthresh != 0 ||
tx_conf->tx_thresh.wthresh != 0) {
sfc_err(sa,
"prefetch/host/writeback thresholds are not supported");
rc = EINVAL;
}
if (((flags & ETH_TXQ_FLAGS_NOMULTSEGS) == 0) &&
(~sa->dp_tx->features & SFC_DP_TX_FEAT_MULTI_SEG)) {
sfc_err(sa, "Multi-segment is not supported by %s datapath",
sa->dp_tx->dp.name);
rc = EINVAL;
}
if ((flags & ETH_TXQ_FLAGS_NOVLANOFFL) == 0) {
if (!encp->enc_hw_tx_insert_vlan_enabled) {
sfc_err(sa, "VLAN offload is not supported");
rc = EINVAL;
} else if (~sa->dp_tx->features & SFC_DP_TX_FEAT_VLAN_INSERT) {
sfc_err(sa,
"VLAN offload is not supported by %s datapath",
sa->dp_tx->dp.name);
rc = EINVAL;
}
}
if ((flags & ETH_TXQ_FLAGS_NOXSUMSCTP) == 0) {
sfc_err(sa, "SCTP offload is not supported");
rc = EINVAL;
}
/* We either perform both TCP and UDP offload, or no offload at all */
if (((flags & ETH_TXQ_FLAGS_NOXSUMTCP) == 0) !=
((flags & ETH_TXQ_FLAGS_NOXSUMUDP) == 0)) {
sfc_err(sa, "TCP and UDP offloads can't be set independently");
rc = EINVAL;
}
return rc;
}
void
sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index)
{
struct rte_eth_dev_data *dev_data;
struct sfc_txq_info *txq_info;
struct sfc_txq *txq;
unsigned int retry_count;
unsigned int wait_count;
sfc_log_init(sa, "TxQ = %u", sw_index);
SFC_ASSERT(sw_index < sa->txq_count);
txq_info = &sa->txq_info[sw_index];
txq = txq_info->txq;
if (txq->state == SFC_TXQ_INITIALIZED)
return;
SFC_ASSERT(txq->state & SFC_TXQ_STARTED);
sa->dp_tx->qstop(txq->dp, &txq->evq->read_ptr);
/*
* Retry TX queue flushing in case of flush failed or
* timeout; in the worst case it can delay for 6 seconds
*/
for (retry_count = 0;
((txq->state & SFC_TXQ_FLUSHED) == 0) &&
(retry_count < SFC_TX_QFLUSH_ATTEMPTS);
++retry_count) {
if (efx_tx_qflush(txq->common) != 0) {
txq->state |= SFC_TXQ_FLUSHING;
break;
}
/*
* Wait for TX queue flush done or flush failed event at least
* SFC_TX_QFLUSH_POLL_WAIT_MS milliseconds and not more
* than 2 seconds (SFC_TX_QFLUSH_POLL_WAIT_MS multiplied
* by SFC_TX_QFLUSH_POLL_ATTEMPTS)
*/
wait_count = 0;
do {
rte_delay_ms(SFC_TX_QFLUSH_POLL_WAIT_MS);
sfc_ev_qpoll(txq->evq);
} while ((txq->state & SFC_TXQ_FLUSHING) &&
wait_count++ < SFC_TX_QFLUSH_POLL_ATTEMPTS);
if (txq->state & SFC_TXQ_FLUSHING)
sfc_err(sa, "TxQ %u flush timed out", sw_index);
if (txq->state & SFC_TXQ_FLUSHED)
sfc_info(sa, "TxQ %u flushed", sw_index);
}
sa->dp_tx->qreap(txq->dp);
txq->state = SFC_TXQ_INITIALIZED;
efx_tx_qdestroy(txq->common);
sfc_ev_qstop(txq->evq);
/*
* It seems to be used by DPDK for debug purposes only ('rte_ether')
*/
dev_data = sa->eth_dev->data;
dev_data->tx_queue_state[sw_index] = RTE_ETH_QUEUE_STATE_STOPPED;
}
int
sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index)
{
struct rte_eth_dev_data *dev_data;
struct sfc_txq_info *txq_info;
struct sfc_txq *txq;
struct sfc_evq *evq;
uint16_t flags;
unsigned int desc_index;
int rc = 0;
sfc_log_init(sa, "TxQ = %u", sw_index);
SFC_ASSERT(sw_index < sa->txq_count);
txq_info = &sa->txq_info[sw_index];
txq = txq_info->txq;
SFC_ASSERT(txq->state == SFC_TXQ_INITIALIZED);
evq = txq->evq;
rc = sfc_ev_qstart(evq, sfc_evq_index_by_txq_sw_index(sa, sw_index));
if (rc != 0)
goto fail_ev_qstart;
/*
* It seems that DPDK has no controls regarding IPv4 offloads,
* hence, we always enable it here
*/
if ((txq->flags & ETH_TXQ_FLAGS_NOXSUMTCP) ||
(txq->flags & ETH_TXQ_FLAGS_NOXSUMUDP)) {
flags = EFX_TXQ_CKSUM_IPV4;
} else {
flags = EFX_TXQ_CKSUM_IPV4 | EFX_TXQ_CKSUM_TCPUDP;
if (sa->tso)
flags |= EFX_TXQ_FATSOV2;
}
rc = efx_tx_qcreate(sa->nic, sw_index, 0, &txq->mem,
txq_info->entries, 0 /* not used on EF10 */,
flags, evq->common,
&txq->common, &desc_index);
if (rc != 0) {
if (sa->tso && (rc == ENOSPC))
sfc_err(sa, "ran out of TSO contexts");
goto fail_tx_qcreate;
}
efx_tx_qenable(txq->common);
txq->state |= SFC_TXQ_STARTED;
rc = sa->dp_tx->qstart(txq->dp, evq->read_ptr, desc_index);
if (rc != 0)
goto fail_dp_qstart;
/*
* It seems to be used by DPDK for debug purposes only ('rte_ether')
*/
dev_data = sa->eth_dev->data;
dev_data->tx_queue_state[sw_index] = RTE_ETH_QUEUE_STATE_STARTED;
return 0;
fail_dp_qstart:
txq->state = SFC_TXQ_INITIALIZED;
efx_tx_qdestroy(txq->common);
fail_tx_qcreate:
sfc_ev_qstop(evq);
fail_ev_qstart:
return rc;
}
static boolean_t
sfc_ev_efx_rx(void *arg, __rte_unused uint32_t label, uint32_t id,
uint32_t size, uint16_t flags)
{
struct sfc_evq *evq = arg;
struct sfc_efx_rxq *rxq;
unsigned int stop;
unsigned int pending_id;
unsigned int delta;
unsigned int i;
struct sfc_efx_rx_sw_desc *rxd;
if (unlikely(evq->exception))
goto done;
rxq = sfc_efx_rxq_by_dp_rxq(evq->dp_rxq);
SFC_ASSERT(rxq != NULL);
SFC_ASSERT(rxq->evq == evq);
SFC_ASSERT(rxq->flags & SFC_EFX_RXQ_FLAG_STARTED);
stop = (id + 1) & rxq->ptr_mask;
pending_id = rxq->pending & rxq->ptr_mask;
delta = (stop >= pending_id) ? (stop - pending_id) :
(rxq->ptr_mask + 1 - pending_id + stop);
if (delta == 0) {
/*
* Rx event with no new descriptors done and zero length
* is used to abort scattered packet when there is no room
* for the tail.
*/
if (unlikely(size != 0)) {
evq->exception = B_TRUE;
sfc_err(evq->sa,
"EVQ %u RxQ %u invalid RX abort "
"(id=%#x size=%u flags=%#x); needs restart",
evq->evq_index, rxq->dp.dpq.queue_id,
id, size, flags);
goto done;
}
/* Add discard flag to the first fragment */
rxq->sw_desc[pending_id].flags |= EFX_DISCARD;
/* Remove continue flag from the last fragment */
rxq->sw_desc[id].flags &= ~EFX_PKT_CONT;
} else if (unlikely(delta > rxq->batch_max)) {
evq->exception = B_TRUE;
sfc_err(evq->sa,
"EVQ %u RxQ %u completion out of order "
"(id=%#x delta=%u flags=%#x); needs restart",
evq->evq_index, rxq->dp.dpq.queue_id,
id, delta, flags);
goto done;
}
for (i = pending_id; i != stop; i = (i + 1) & rxq->ptr_mask) {
rxd = &rxq->sw_desc[i];
rxd->flags = flags;
SFC_ASSERT(size < (1 << 16));
rxd->size = (uint16_t)size;
}
rxq->pending += delta;
done:
return B_FALSE;
}