#include <rte_memzone.h>
#include <rte_malloc.h>
#include <rte_atomic.h>
+#include <rte_bitmap.h>
#include <rte_branch_prediction.h>
#include <rte_ether.h>
#include <rte_common.h>
struct rte_mbuf *m;
uint16_t queue_id;
- uint16_t chim_index;
+ uint32_t chim_index;
uint32_t chim_size;
uint32_t data_size;
uint32_t packets;
RNDIS_PKTINFO_SIZE(NDIS_LSO2_INFO_SIZE) + \
RNDIS_PKTINFO_SIZE(NDIS_TXCSUM_INFO_SIZE))
+#define HN_RNDIS_PKT_ALIGNED RTE_ALIGN(HN_RNDIS_PKT_LEN, RTE_CACHE_LINE_SIZE)
+
/* Minimum space required for a packet */
#define HN_PKTSIZE_MIN(align) \
RTE_ALIGN(RTE_ETHER_MIN_LEN + HN_RNDIS_PKT_LEN, align)
-#define DEFAULT_TX_FREE_THRESH 32U
+#define DEFAULT_TX_FREE_THRESH 32
static void
hn_update_packet_stats(struct hn_stats *stats, const struct rte_mbuf *m)
static void hn_txd_init(struct rte_mempool *mp __rte_unused,
void *opaque, void *obj, unsigned int idx)
{
+ struct hn_tx_queue *txq = opaque;
struct hn_txdesc *txd = obj;
- struct rte_eth_dev *dev = opaque;
- struct rndis_packet_msg *pkt;
memset(txd, 0, sizeof(*txd));
- txd->chim_index = idx;
-
- pkt = rte_malloc_socket("RNDIS_TX", HN_RNDIS_PKT_LEN,
- rte_align32pow2(HN_RNDIS_PKT_LEN),
- dev->device->numa_node);
- if (!pkt)
- rte_exit(EXIT_FAILURE, "can not allocate RNDIS header");
- txd->rndis_pkt = pkt;
+ txd->queue_id = txq->queue_id;
+ txd->chim_index = NVS_CHIM_IDX_INVALID;
+ txd->rndis_pkt = (struct rndis_packet_msg *)(char *)txq->tx_rndis
+ + idx * HN_RNDIS_PKT_ALIGNED;
}
-/*
- * Unlike Linux and FreeBSD, this driver uses a mempool
- * to limit outstanding transmits and reserve buffers
- */
int
-hn_tx_pool_init(struct rte_eth_dev *dev)
+hn_chim_init(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
- char name[RTE_MEMPOOL_NAMESIZE];
- struct rte_mempool *mp;
+ uint32_t i, chim_bmp_size;
+
+ rte_spinlock_init(&hv->chim_lock);
+ chim_bmp_size = rte_bitmap_get_memory_footprint(hv->chim_cnt);
+ hv->chim_bmem = rte_zmalloc("hn_chim_bitmap", chim_bmp_size,
+ RTE_CACHE_LINE_SIZE);
+ if (hv->chim_bmem == NULL) {
+ PMD_INIT_LOG(ERR, "failed to allocate bitmap size %u",
+ chim_bmp_size);
+ return -1;
+ }
- snprintf(name, sizeof(name),
- "hn_txd_%u", dev->data->port_id);
-
- PMD_INIT_LOG(DEBUG, "create a TX send pool %s n=%u size=%zu socket=%d",
- name, hv->chim_cnt, sizeof(struct hn_txdesc),
- dev->device->numa_node);
-
- mp = rte_mempool_create(name, hv->chim_cnt, sizeof(struct hn_txdesc),
- HN_TXD_CACHE_SIZE, 0,
- NULL, NULL,
- hn_txd_init, dev,
- dev->device->numa_node, 0);
- if (!mp) {
- PMD_DRV_LOG(ERR,
- "mempool %s create failed: %d", name, rte_errno);
- return -rte_errno;
+ hv->chim_bmap = rte_bitmap_init(hv->chim_cnt,
+ hv->chim_bmem, chim_bmp_size);
+ if (hv->chim_bmap == NULL) {
+ PMD_INIT_LOG(ERR, "failed to init chim bitmap");
+ return -1;
}
- hv->tx_pool = mp;
+ for (i = 0; i < hv->chim_cnt; i++)
+ rte_bitmap_set(hv->chim_bmap, i);
+
return 0;
}
void
-hn_tx_pool_uninit(struct rte_eth_dev *dev)
+hn_chim_uninit(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
- if (hv->tx_pool) {
- rte_mempool_free(hv->tx_pool);
- hv->tx_pool = NULL;
+ rte_bitmap_free(hv->chim_bmap);
+ rte_free(hv->chim_bmem);
+ hv->chim_bmem = NULL;
+}
+
+static uint32_t hn_chim_alloc(struct hn_data *hv)
+{
+ uint32_t index = NVS_CHIM_IDX_INVALID;
+ uint64_t slab;
+
+ rte_spinlock_lock(&hv->chim_lock);
+ if (rte_bitmap_scan(hv->chim_bmap, &index, &slab))
+ rte_bitmap_clear(hv->chim_bmap, index);
+ rte_spinlock_unlock(&hv->chim_lock);
+
+ return index;
+}
+
+static void hn_chim_free(struct hn_data *hv, uint32_t chim_idx)
+{
+ if (chim_idx >= hv->chim_cnt) {
+ PMD_DRV_LOG(ERR, "Invalid chimney index %u", chim_idx);
+ } else {
+ rte_spinlock_lock(&hv->chim_lock);
+ rte_bitmap_set(hv->chim_bmap, chim_idx);
+ rte_spinlock_unlock(&hv->chim_lock);
}
}
int
hn_dev_tx_queue_setup(struct rte_eth_dev *dev,
- uint16_t queue_idx, uint16_t nb_desc __rte_unused,
+ uint16_t queue_idx, uint16_t nb_desc,
unsigned int socket_id,
const struct rte_eth_txconf *tx_conf)
{
struct hn_data *hv = dev->data->dev_private;
struct hn_tx_queue *txq;
+ char name[RTE_MEMPOOL_NAMESIZE];
uint32_t tx_free_thresh;
- int err;
+ int err = -ENOMEM;
PMD_INIT_FUNC_TRACE();
tx_free_thresh = tx_conf->tx_free_thresh;
if (tx_free_thresh == 0)
- tx_free_thresh = RTE_MIN(hv->chim_cnt / 4,
+ tx_free_thresh = RTE_MIN(nb_desc / 4,
DEFAULT_TX_FREE_THRESH);
- if (tx_free_thresh >= hv->chim_cnt - 3)
- tx_free_thresh = hv->chim_cnt - 3;
+ if (tx_free_thresh + 3 >= nb_desc) {
+ PMD_INIT_LOG(ERR,
+ "tx_free_thresh must be less than the number of TX entries minus 3(%u)."
+ " (tx_free_thresh=%u port=%u queue=%u)\n",
+ nb_desc - 3,
+ tx_free_thresh, dev->data->port_id, queue_idx);
+ return -EINVAL;
+ }
txq->free_thresh = tx_free_thresh;
+ snprintf(name, sizeof(name),
+ "hn_txd_%u_%u", dev->data->port_id, queue_idx);
+
+ PMD_INIT_LOG(DEBUG, "TX descriptor pool %s n=%u size=%zu",
+ name, nb_desc, sizeof(struct hn_txdesc));
+
+ txq->tx_rndis = rte_calloc("hn_txq_rndis", nb_desc,
+ HN_RNDIS_PKT_ALIGNED, RTE_CACHE_LINE_SIZE);
+ if (txq->tx_rndis == NULL)
+ goto error;
+
+ txq->txdesc_pool = rte_mempool_create(name, nb_desc,
+ sizeof(struct hn_txdesc),
+ 0, 0, NULL, NULL,
+ hn_txd_init, txq,
+ dev->device->numa_node, 0);
+ if (txq->txdesc_pool == NULL) {
+ PMD_DRV_LOG(ERR,
+ "mempool %s create failed: %d", name, rte_errno);
+ goto error;
+ }
+
txq->agg_szmax = RTE_MIN(hv->chim_szmax, hv->rndis_agg_size);
txq->agg_pktmax = hv->rndis_agg_pkts;
txq->agg_align = hv->rndis_agg_align;
err = hn_vf_tx_queue_setup(dev, queue_idx, nb_desc,
socket_id, tx_conf);
- if (err) {
- rte_free(txq);
- return err;
+ if (err == 0) {
+ dev->data->tx_queues[queue_idx] = txq;
+ return 0;
}
- dev->data->tx_queues[queue_idx] = txq;
- return 0;
+error:
+ if (txq->txdesc_pool)
+ rte_mempool_free(txq->txdesc_pool);
+ rte_free(txq->tx_rndis);
+ rte_free(txq);
+ return err;
+}
+
+
+static struct hn_txdesc *hn_txd_get(struct hn_tx_queue *txq)
+{
+ struct hn_txdesc *txd;
+
+ if (rte_mempool_get(txq->txdesc_pool, (void **)&txd)) {
+ ++txq->stats.ring_full;
+ PMD_TX_LOG(DEBUG, "tx pool exhausted!");
+ return NULL;
+ }
+
+ txd->m = NULL;
+ txd->packets = 0;
+ txd->data_size = 0;
+ txd->chim_size = 0;
+
+ return txd;
+}
+
+static void hn_txd_put(struct hn_tx_queue *txq, struct hn_txdesc *txd)
+{
+ rte_mempool_put(txq->txdesc_pool, txd);
}
void
hn_dev_tx_queue_release(void *arg)
{
struct hn_tx_queue *txq = arg;
- struct hn_txdesc *txd;
PMD_INIT_FUNC_TRACE();
if (!txq)
return;
- /* If any pending data is still present just drop it */
- txd = txq->agg_txd;
- if (txd)
- rte_mempool_put(txq->hv->tx_pool, txd);
+ if (txq->txdesc_pool)
+ rte_mempool_free(txq->txdesc_pool);
+ rte_free(txq->tx_rndis);
rte_free(txq);
}
hn_nvs_send_completed(struct rte_eth_dev *dev, uint16_t queue_id,
unsigned long xactid, const struct hn_nvs_rndis_ack *ack)
{
+ struct hn_data *hv = dev->data->dev_private;
struct hn_txdesc *txd = (struct hn_txdesc *)xactid;
struct hn_tx_queue *txq;
++txq->stats.errors;
}
- rte_pktmbuf_free(txd->m);
+ if (txd->chim_index != NVS_CHIM_IDX_INVALID)
+ hn_chim_free(hv, txd->chim_index);
- rte_mempool_put(txq->hv->tx_pool, txd);
+ rte_pktmbuf_free(txd->m);
+ hn_txd_put(txq, txd);
}
/* Handle transmit completion events */
return ret;
}
-static struct hn_txdesc *hn_new_txd(struct hn_data *hv,
- struct hn_tx_queue *txq)
-{
- struct hn_txdesc *txd;
-
- if (rte_mempool_get(hv->tx_pool, (void **)&txd)) {
- ++txq->stats.ring_full;
- PMD_TX_LOG(DEBUG, "tx pool exhausted!");
- return NULL;
- }
-
- txd->m = NULL;
- txd->queue_id = txq->queue_id;
- txd->packets = 0;
- txd->data_size = 0;
- txd->chim_size = 0;
-
- return txd;
-}
-
+/*
+ * Try and find a place in a send chimney buffer to put
+ * the small packet. If space is available, this routine
+ * returns a pointer of where to place the data.
+ * If no space, caller should try direct transmit.
+ */
static void *
-hn_try_txagg(struct hn_data *hv, struct hn_tx_queue *txq, uint32_t pktsize)
+hn_try_txagg(struct hn_data *hv, struct hn_tx_queue *txq,
+ struct hn_txdesc *txd, uint32_t pktsize)
{
struct hn_txdesc *agg_txd = txq->agg_txd;
struct rndis_packet_msg *pkt;
}
chim = (uint8_t *)pkt + pkt->len;
-
+ txq->agg_prevpkt = chim;
txq->agg_pktleft--;
txq->agg_szleft -= pktsize;
if (txq->agg_szleft < HN_PKTSIZE_MIN(txq->agg_align)) {
*/
txq->agg_pktleft = 0;
}
- } else {
- agg_txd = hn_new_txd(hv, txq);
- if (!agg_txd)
- return NULL;
-
- chim = (uint8_t *)hv->chim_res->addr
- + agg_txd->chim_index * hv->chim_szmax;
- txq->agg_txd = agg_txd;
- txq->agg_pktleft = txq->agg_pktmax - 1;
- txq->agg_szleft = txq->agg_szmax - pktsize;
+ hn_txd_put(txq, txd);
+ return chim;
}
+
+ txd->chim_index = hn_chim_alloc(hv);
+ if (txd->chim_index == NVS_CHIM_IDX_INVALID)
+ return NULL;
+
+ chim = (uint8_t *)hv->chim_res->addr
+ + txd->chim_index * hv->chim_szmax;
+
+ txq->agg_txd = txd;
+ txq->agg_pktleft = txq->agg_pktmax - 1;
+ txq->agg_szleft = txq->agg_szmax - pktsize;
txq->agg_prevpkt = chim;
return chim;
return (*vf_dev->tx_pkt_burst)(sub_q, tx_pkts, nb_pkts);
}
- if (rte_mempool_avail_count(hv->tx_pool) <= txq->free_thresh)
+ if (rte_mempool_avail_count(txq->txdesc_pool) <= txq->free_thresh)
hn_process_events(hv, txq->queue_id, 0);
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
struct rte_mbuf *m = tx_pkts[nb_tx];
uint32_t pkt_size = m->pkt_len + HN_RNDIS_PKT_LEN;
struct rndis_packet_msg *pkt;
+ struct hn_txdesc *txd;
+
+ txd = hn_txd_get(txq);
+ if (txd == NULL)
+ break;
/* For small packets aggregate them in chimney buffer */
if (m->pkt_len < HN_TXCOPY_THRESHOLD && pkt_size <= txq->agg_szmax) {
goto fail;
}
- pkt = hn_try_txagg(hv, txq, pkt_size);
+
+ pkt = hn_try_txagg(hv, txq, txd, pkt_size);
if (unlikely(!pkt))
break;
hn_flush_txagg(txq, &need_sig))
goto fail;
} else {
- struct hn_txdesc *txd;
-
- /* can send chimney data and large packet at once */
- txd = txq->agg_txd;
- if (txd) {
- hn_reset_txagg(txq);
- } else {
- txd = hn_new_txd(hv, txq);
- if (unlikely(!txd))
- break;
- }
+ /* Send any outstanding packets in buffer */
+ if (txq->agg_txd && hn_flush_txagg(txq, &need_sig))
+ goto fail;
pkt = txd->rndis_pkt;
txd->m = m;
- txd->data_size += m->pkt_len;
+ txd->data_size = m->pkt_len;
++txd->packets;
hn_encap(pkt, queue_id, m);
if (unlikely(ret != 0)) {
PMD_TX_LOG(NOTICE, "sg send failed: %d", ret);
++txq->stats.errors;
- rte_mempool_put(hv->tx_pool, txd);
+ hn_txd_put(txq, txd);
goto fail;
}
}
git.droids-corp.org / dpdk.git / commitdiff