@@ -12,6 +12,7 @@ objs = [base_objs]
sources = files(
'ngbe_ethdev.c',
+ 'ngbe_rxtx.c',
)
includes += include_directories('base')
@@ -12,6 +12,7 @@
#include "ngbe_logs.h"
#include "ngbe.h"
#include "ngbe_ethdev.h"
+#include "ngbe_rxtx.h"
static int ngbe_dev_close(struct rte_eth_dev *dev);
@@ -37,6 +38,12 @@ static const struct rte_pci_id pci_id_ngbe_map[] = {
{ .vendor_id = 0, /* sentinel */ },
};
+static const struct rte_eth_desc_lim rx_desc_lim = {
+ .nb_max = NGBE_RING_DESC_MAX,
+ .nb_min = NGBE_RING_DESC_MIN,
+ .nb_align = NGBE_RXD_ALIGN,
+};
+
static const struct eth_dev_ops ngbe_eth_dev_ops;
static inline void
@@ -241,12 +248,19 @@ static int
ngbe_dev_configure(struct rte_eth_dev *dev)
{
struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+ struct ngbe_adapter *adapter = ngbe_dev_adapter(dev);
PMD_INIT_FUNC_TRACE();
/* set flag to update link status after init */
intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
+ /*
+ * Initialize to TRUE. If any of Rx queues doesn't meet the bulk
+ * allocation Rx preconditions we will reset it.
+ */
+ adapter->rx_bulk_alloc_allowed = true;
+
return 0;
}
@@ -266,11 +280,30 @@ ngbe_dev_close(struct rte_eth_dev *dev)
static int
ngbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
- RTE_SET_USED(dev);
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+
+ dev_info->max_rx_queues = (uint16_t)hw->mac.max_rx_queues;
+
+ dev_info->default_rxconf = (struct rte_eth_rxconf) {
+ .rx_thresh = {
+ .pthresh = NGBE_DEFAULT_RX_PTHRESH,
+ .hthresh = NGBE_DEFAULT_RX_HTHRESH,
+ .wthresh = NGBE_DEFAULT_RX_WTHRESH,
+ },
+ .rx_free_thresh = NGBE_DEFAULT_RX_FREE_THRESH,
+ .rx_drop_en = 0,
+ .offloads = 0,
+ };
+
+ dev_info->rx_desc_lim = rx_desc_lim;
dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_100M |
ETH_LINK_SPEED_10M;
+ /* Driver-preferred Rx/Tx parameters */
+ dev_info->default_rxportconf.nb_queues = 1;
+ dev_info->default_rxportconf.ring_size = 256;
+
return 0;
}
@@ -563,6 +596,8 @@ static const struct eth_dev_ops ngbe_eth_dev_ops = {
.dev_configure = ngbe_dev_configure,
.dev_infos_get = ngbe_dev_info_get,
.link_update = ngbe_dev_link_update,
+ .rx_queue_setup = ngbe_dev_rx_queue_setup,
+ .rx_queue_release = ngbe_dev_rx_queue_release,
};
RTE_PMD_REGISTER_PCI(net_ngbe, rte_ngbe_pmd);
@@ -30,6 +30,7 @@ struct ngbe_interrupt {
struct ngbe_adapter {
struct ngbe_hw hw;
struct ngbe_interrupt intr;
+ bool rx_bulk_alloc_allowed;
};
static inline struct ngbe_adapter *
@@ -58,6 +59,13 @@ ngbe_dev_intr(struct rte_eth_dev *dev)
return intr;
}
+void ngbe_dev_rx_queue_release(void *rxq);
+
+int ngbe_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
+ uint16_t nb_rx_desc, unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mb_pool);
+
int
ngbe_dev_link_update_share(struct rte_eth_dev *dev,
int wait_to_complete);
@@ -66,4 +74,12 @@ ngbe_dev_link_update_share(struct rte_eth_dev *dev,
#define NGBE_LINK_UP_CHECK_TIMEOUT 1000 /* ms */
#define NGBE_VMDQ_NUM_UC_MAC 4096 /* Maximum nb. of UC MAC addr. */
+/*
+ * Default values for Rx/Tx configuration
+ */
+#define NGBE_DEFAULT_RX_FREE_THRESH 32
+#define NGBE_DEFAULT_RX_PTHRESH 8
+#define NGBE_DEFAULT_RX_HTHRESH 8
+#define NGBE_DEFAULT_RX_WTHRESH 0
+
#endif /* _NGBE_ETHDEV_H_ */
new file mode 100644
@@ -0,0 +1,290 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018-2021 Beijing WangXun Technology Co., Ltd.
+ * Copyright(c) 2010-2017 Intel Corporation
+ */
+
+#include <sys/queue.h>
+
+#include <stdint.h>
+#include <rte_ethdev.h>
+#include <ethdev_driver.h>
+#include <rte_malloc.h>
+
+#include "ngbe_logs.h"
+#include "base/ngbe.h"
+#include "ngbe_ethdev.h"
+#include "ngbe_rxtx.h"
+
+/**
+ * ngbe_free_sc_cluster - free the not-yet-completed scattered cluster
+ *
+ * The "next" pointer of the last segment of (not-yet-completed) RSC clusters
+ * in the sw_sc_ring is not set to NULL but rather points to the next
+ * mbuf of this RSC aggregation (that has not been completed yet and still
+ * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we
+ * will just free first "nb_segs" segments of the cluster explicitly by calling
+ * an rte_pktmbuf_free_seg().
+ *
+ * @m scattered cluster head
+ */
+static void __rte_cold
+ngbe_free_sc_cluster(struct rte_mbuf *m)
+{
+ uint16_t i, nb_segs = m->nb_segs;
+ struct rte_mbuf *next_seg;
+
+ for (i = 0; i < nb_segs; i++) {
+ next_seg = m->next;
+ rte_pktmbuf_free_seg(m);
+ m = next_seg;
+ }
+}
+
+static void __rte_cold
+ngbe_rx_queue_release_mbufs(struct ngbe_rx_queue *rxq)
+{
+ unsigned int i;
+
+ if (rxq->sw_ring != NULL) {
+ for (i = 0; i < rxq->nb_rx_desc; i++) {
+ if (rxq->sw_ring[i].mbuf != NULL) {
+ rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
+ rxq->sw_ring[i].mbuf = NULL;
+ }
+ }
+ for (i = 0; i < rxq->rx_nb_avail; ++i) {
+ struct rte_mbuf *mb;
+
+ mb = rxq->rx_stage[rxq->rx_next_avail + i];
+ rte_pktmbuf_free_seg(mb);
+ }
+ rxq->rx_nb_avail = 0;
+ }
+
+ if (rxq->sw_sc_ring != NULL)
+ for (i = 0; i < rxq->nb_rx_desc; i++)
+ if (rxq->sw_sc_ring[i].fbuf != NULL) {
+ ngbe_free_sc_cluster(rxq->sw_sc_ring[i].fbuf);
+ rxq->sw_sc_ring[i].fbuf = NULL;
+ }
+}
+
+static void __rte_cold
+ngbe_rx_queue_release(struct ngbe_rx_queue *rxq)
+{
+ if (rxq != NULL) {
+ ngbe_rx_queue_release_mbufs(rxq);
+ rte_free(rxq->sw_ring);
+ rte_free(rxq->sw_sc_ring);
+ rte_free(rxq);
+ }
+}
+
+void __rte_cold
+ngbe_dev_rx_queue_release(void *rxq)
+{
+ ngbe_rx_queue_release(rxq);
+}
+
+/*
+ * Check if Rx Burst Bulk Alloc function can be used.
+ * Return
+ * 0: the preconditions are satisfied and the bulk allocation function
+ * can be used.
+ * -EINVAL: the preconditions are NOT satisfied and the default Rx burst
+ * function must be used.
+ */
+static inline int __rte_cold
+check_rx_burst_bulk_alloc_preconditions(struct ngbe_rx_queue *rxq)
+{
+ int ret = 0;
+
+ /*
+ * Make sure the following pre-conditions are satisfied:
+ * rxq->rx_free_thresh >= RTE_PMD_NGBE_RX_MAX_BURST
+ * rxq->rx_free_thresh < rxq->nb_rx_desc
+ * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
+ * Scattered packets are not supported. This should be checked
+ * outside of this function.
+ */
+ if (rxq->rx_free_thresh < RTE_PMD_NGBE_RX_MAX_BURST) {
+ PMD_INIT_LOG(DEBUG,
+ "Rx Burst Bulk Alloc Preconditions: rxq->rx_free_thresh=%d, RTE_PMD_NGBE_RX_MAX_BURST=%d",
+ rxq->rx_free_thresh, RTE_PMD_NGBE_RX_MAX_BURST);
+ ret = -EINVAL;
+ } else if (rxq->rx_free_thresh >= rxq->nb_rx_desc) {
+ PMD_INIT_LOG(DEBUG,
+ "Rx Burst Bulk Alloc Preconditions: rxq->rx_free_thresh=%d, rxq->nb_rx_desc=%d",
+ rxq->rx_free_thresh, rxq->nb_rx_desc);
+ ret = -EINVAL;
+ } else if ((rxq->nb_rx_desc % rxq->rx_free_thresh) != 0) {
+ PMD_INIT_LOG(DEBUG,
+ "Rx Burst Bulk Alloc Preconditions: rxq->nb_rx_desc=%d, rxq->rx_free_thresh=%d",
+ rxq->nb_rx_desc, rxq->rx_free_thresh);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+/* Reset dynamic ngbe_rx_queue fields back to defaults */
+static void __rte_cold
+ngbe_reset_rx_queue(struct ngbe_adapter *adapter, struct ngbe_rx_queue *rxq)
+{
+ static const struct ngbe_rx_desc zeroed_desc = {
+ {{0}, {0} }, {{0}, {0} } };
+ unsigned int i;
+ uint16_t len = rxq->nb_rx_desc;
+
+ /*
+ * By default, the Rx queue setup function allocates enough memory for
+ * NGBE_RING_DESC_MAX. The Rx Burst bulk allocation function requires
+ * extra memory at the end of the descriptor ring to be zero'd out.
+ */
+ if (adapter->rx_bulk_alloc_allowed)
+ /* zero out extra memory */
+ len += RTE_PMD_NGBE_RX_MAX_BURST;
+
+ /*
+ * Zero out HW ring memory. Zero out extra memory at the end of
+ * the H/W ring so look-ahead logic in Rx Burst bulk alloc function
+ * reads extra memory as zeros.
+ */
+ for (i = 0; i < len; i++)
+ rxq->rx_ring[i] = zeroed_desc;
+
+ /*
+ * initialize extra software ring entries. Space for these extra
+ * entries is always allocated
+ */
+ memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
+ for (i = rxq->nb_rx_desc; i < len; ++i)
+ rxq->sw_ring[i].mbuf = &rxq->fake_mbuf;
+
+ rxq->rx_nb_avail = 0;
+ rxq->rx_next_avail = 0;
+ rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
+ rxq->rx_tail = 0;
+ rxq->nb_rx_hold = 0;
+ rxq->pkt_first_seg = NULL;
+ rxq->pkt_last_seg = NULL;
+}
+
+int __rte_cold
+ngbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
+ uint16_t queue_idx,
+ uint16_t nb_desc,
+ unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mp)
+{
+ const struct rte_memzone *rz;
+ struct ngbe_rx_queue *rxq;
+ struct ngbe_hw *hw;
+ uint16_t len;
+ struct ngbe_adapter *adapter = ngbe_dev_adapter(dev);
+
+ PMD_INIT_FUNC_TRACE();
+ hw = ngbe_dev_hw(dev);
+
+ /* Free memory prior to re-allocation if needed... */
+ if (dev->data->rx_queues[queue_idx] != NULL) {
+ ngbe_rx_queue_release(dev->data->rx_queues[queue_idx]);
+ dev->data->rx_queues[queue_idx] = NULL;
+ }
+
+ /* First allocate the Rx queue data structure */
+ rxq = rte_zmalloc_socket("ethdev RX queue",
+ sizeof(struct ngbe_rx_queue),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (rxq == NULL)
+ return -ENOMEM;
+ rxq->mb_pool = mp;
+ rxq->nb_rx_desc = nb_desc;
+ rxq->rx_free_thresh = rx_conf->rx_free_thresh;
+ rxq->queue_id = queue_idx;
+ rxq->reg_idx = queue_idx;
+ rxq->port_id = dev->data->port_id;
+ rxq->drop_en = rx_conf->rx_drop_en;
+ rxq->rx_deferred_start = rx_conf->rx_deferred_start;
+
+ /*
+ * Allocate Rx ring hardware descriptors. A memzone large enough to
+ * handle the maximum ring size is allocated in order to allow for
+ * resizing in later calls to the queue setup function.
+ */
+ rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx,
+ RX_RING_SZ, NGBE_ALIGN, socket_id);
+ if (rz == NULL) {
+ ngbe_rx_queue_release(rxq);
+ return -ENOMEM;
+ }
+
+ /*
+ * Zero init all the descriptors in the ring.
+ */
+ memset(rz->addr, 0, RX_RING_SZ);
+
+ rxq->rdt_reg_addr = NGBE_REG_ADDR(hw, NGBE_RXWP(rxq->reg_idx));
+ rxq->rdh_reg_addr = NGBE_REG_ADDR(hw, NGBE_RXRP(rxq->reg_idx));
+
+ rxq->rx_ring_phys_addr = TMZ_PADDR(rz);
+ rxq->rx_ring = (struct ngbe_rx_desc *)TMZ_VADDR(rz);
+
+ /*
+ * Certain constraints must be met in order to use the bulk buffer
+ * allocation Rx burst function. If any of Rx queues doesn't meet them
+ * the feature should be disabled for the whole port.
+ */
+ if (check_rx_burst_bulk_alloc_preconditions(rxq)) {
+ PMD_INIT_LOG(DEBUG,
+ "queue[%d] doesn't meet Rx Bulk Alloc preconditions - canceling the feature for the whole port[%d]",
+ rxq->queue_id, rxq->port_id);
+ adapter->rx_bulk_alloc_allowed = false;
+ }
+
+ /*
+ * Allocate software ring. Allow for space at the end of the
+ * S/W ring to make sure look-ahead logic in bulk alloc Rx burst
+ * function does not access an invalid memory region.
+ */
+ len = nb_desc;
+ if (adapter->rx_bulk_alloc_allowed)
+ len += RTE_PMD_NGBE_RX_MAX_BURST;
+
+ rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
+ sizeof(struct ngbe_rx_entry) * len,
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (rxq->sw_ring == NULL) {
+ ngbe_rx_queue_release(rxq);
+ return -ENOMEM;
+ }
+
+ /*
+ * Always allocate even if it's not going to be needed in order to
+ * simplify the code.
+ *
+ * This ring is used in Scattered Rx cases and Scattered Rx may
+ * be requested in ngbe_dev_rx_init(), which is called later from
+ * dev_start() flow.
+ */
+ rxq->sw_sc_ring =
+ rte_zmalloc_socket("rxq->sw_sc_ring",
+ sizeof(struct ngbe_scattered_rx_entry) * len,
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (rxq->sw_sc_ring == NULL) {
+ ngbe_rx_queue_release(rxq);
+ return -ENOMEM;
+ }
+
+ PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p dma_addr=0x%" PRIx64,
+ rxq->sw_ring, rxq->sw_sc_ring, rxq->rx_ring,
+ rxq->rx_ring_phys_addr);
+
+ dev->data->rx_queues[queue_idx] = rxq;
+
+ ngbe_reset_rx_queue(adapter, rxq);
+
+ return 0;
+}
+
new file mode 100644
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018-2021 Beijing WangXun Technology Co., Ltd.
+ * Copyright(c) 2010-2017 Intel Corporation
+ */
+
+#ifndef _NGBE_RXTX_H_
+#define _NGBE_RXTX_H_
+
+/*****************************************************************************
+ * Receive Descriptor
+ *****************************************************************************/
+struct ngbe_rx_desc {
+ struct {
+ union {
+ rte_le32_t dw0;
+ struct {
+ rte_le16_t pkt;
+ rte_le16_t hdr;
+ } lo;
+ };
+ union {
+ rte_le32_t dw1;
+ struct {
+ rte_le16_t ipid;
+ rte_le16_t csum;
+ } hi;
+ };
+ } qw0; /* also as r.pkt_addr */
+ struct {
+ union {
+ rte_le32_t dw2;
+ struct {
+ rte_le32_t status;
+ } lo;
+ };
+ union {
+ rte_le32_t dw3;
+ struct {
+ rte_le16_t len;
+ rte_le16_t tag;
+ } hi;
+ };
+ } qw1; /* also as r.hdr_addr */
+};
+
+#define RTE_PMD_NGBE_RX_MAX_BURST 32
+
+#define RX_RING_SZ ((NGBE_RING_DESC_MAX + RTE_PMD_NGBE_RX_MAX_BURST) * \
+ sizeof(struct ngbe_rx_desc))
+
+
+/**
+ * Structure associated with each descriptor of the Rx ring of a Rx queue.
+ */
+struct ngbe_rx_entry {
+ struct rte_mbuf *mbuf; /**< mbuf associated with Rx descriptor. */
+};
+
+struct ngbe_scattered_rx_entry {
+ struct rte_mbuf *fbuf; /**< First segment of the fragmented packet. */
+};
+
+/**
+ * Structure associated with each Rx queue.
+ */
+struct ngbe_rx_queue {
+ struct rte_mempool *mb_pool; /**< mbuf pool to populate Rx ring. */
+ volatile struct ngbe_rx_desc *rx_ring; /**< Rx ring virtual address. */
+ uint64_t rx_ring_phys_addr; /**< Rx ring DMA address. */
+ volatile uint32_t *rdt_reg_addr; /**< RDT register address. */
+ volatile uint32_t *rdh_reg_addr; /**< RDH register address. */
+ struct ngbe_rx_entry *sw_ring; /**< address of Rx software ring. */
+ /**< address of scattered Rx software ring. */
+ struct ngbe_scattered_rx_entry *sw_sc_ring;
+ struct rte_mbuf *pkt_first_seg; /**< First segment of current packet. */
+ struct rte_mbuf *pkt_last_seg; /**< Last segment of current packet. */
+ uint16_t nb_rx_desc; /**< number of Rx descriptors. */
+ uint16_t rx_tail; /**< current value of RDT register. */
+ uint16_t nb_rx_hold; /**< number of held free Rx desc. */
+ uint16_t rx_nb_avail; /**< nr of staged pkts ready to ret to app */
+ uint16_t rx_next_avail; /**< idx of next staged pkt to ret to app */
+ uint16_t rx_free_trigger; /**< triggers rx buffer allocation */
+ uint16_t rx_free_thresh; /**< max free Rx desc to hold. */
+ uint16_t queue_id; /**< RX queue index. */
+ uint16_t reg_idx; /**< RX queue register index. */
+ /**< Packet type mask for different NICs. */
+ uint16_t port_id; /**< Device port identifier. */
+ uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
+ uint8_t rx_deferred_start; /**< not in global dev start. */
+ /** need to alloc dummy mbuf, for wraparound when scanning hw ring */
+ struct rte_mbuf fake_mbuf;
+ /** hold packets to return to application */
+ struct rte_mbuf *rx_stage[RTE_PMD_NGBE_RX_MAX_BURST * 2];
+};
+
+#endif /* _NGBE_RXTX_H_ */