From: Nipun Gupta Date: Tue, 23 Jan 2018 12:27:07 +0000 (+0530) Subject: net/dpaa: further push mode optimizations X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b9083ea5e084f0cfcfca40f4452b1a92c1b1ea18;p=dpdk.git net/dpaa: further push mode optimizations This patch supports batch processing of multiple packets in the Rx side Signed-off-by: Nipun Gupta Signed-off-by: Hemant Agrawal --- diff --git a/drivers/bus/dpaa/base/qbman/qman.c b/drivers/bus/dpaa/base/qbman/qman.c index 4d8bdaea7d..2b97671bf5 100644 --- a/drivers/bus/dpaa/base/qbman/qman.c +++ b/drivers/bus/dpaa/base/qbman/qman.c @@ -1055,64 +1055,63 @@ unsigned int qman_portal_poll_rx(unsigned int poll_limit, void **bufs, struct qman_portal *p) { - const struct qm_dqrr_entry *dq; - struct qman_fq *fq; - enum qman_cb_dqrr_result res; - unsigned int limit = 0; -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - struct qm_dqrr_entry *shadow; -#endif - unsigned int rx_number = 0; + struct qm_portal *portal = &p->p; + register struct qm_dqrr *dqrr = &portal->dqrr; + struct qm_dqrr_entry *dq[QM_DQRR_SIZE], *shadow[QM_DQRR_SIZE]; + struct qman_fq *fq[QM_DQRR_SIZE]; + unsigned int limit = 0, rx_number = 0; + uint32_t consume = 0; do { qm_dqrr_pvb_update(&p->p); - dq = qm_dqrr_current(&p->p); - if (unlikely(!dq)) + if (!dqrr->fill) break; + + dq[rx_number] = dqrr->cursor; + dqrr->cursor = DQRR_CARRYCLEAR(dqrr->cursor + 1); + /* Prefetch the next DQRR entry */ + rte_prefetch0(dqrr->cursor); + #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - /* If running on an LE system the fields of the - * dequeue entry must be swapper. Because the - * QMan HW will ignore writes the DQRR entry is - * copied and the index stored within the copy - */ - shadow = &p->shadow_dqrr[DQRR_PTR2IDX(dq)]; - *shadow = *dq; - dq = shadow; - shadow->fqid = be32_to_cpu(shadow->fqid); - shadow->contextB = be32_to_cpu(shadow->contextB); - shadow->seqnum = be16_to_cpu(shadow->seqnum); - hw_fd_to_cpu(&shadow->fd); + /* If running on an LE system the fields of the + * dequeue entry must be swapper. Because the + * QMan HW will ignore writes the DQRR entry is + * copied and the index stored within the copy + */ + shadow[rx_number] = + &p->shadow_dqrr[DQRR_PTR2IDX(dq[rx_number])]; + shadow[rx_number]->fd.opaque_addr = + dq[rx_number]->fd.opaque_addr; + shadow[rx_number]->fd.addr = + be40_to_cpu(dq[rx_number]->fd.addr); + shadow[rx_number]->fd.opaque = + be32_to_cpu(dq[rx_number]->fd.opaque); +#else + shadow = dq; #endif /* SDQCR: context_b points to the FQ */ #ifdef CONFIG_FSL_QMAN_FQ_LOOKUP - fq = get_fq_table_entry(dq->contextB); + fq[rx_number] = qman_fq_lookup_table[be32_to_cpu( + dq[rx_number]->contextB)]; #else - fq = (void *)(uintptr_t)dq->contextB; + fq[rx_number] = (void *)(uintptr_t)be32_to_cpu(dq->contextB); #endif - /* Now let the callback do its stuff */ - res = fq->cb.dqrr_dpdk_cb(NULL, p, fq, dq, &bufs[rx_number]); + fq[rx_number]->cb.dqrr_prepare(shadow[rx_number], + &bufs[rx_number]); + + consume |= (1 << (31 - DQRR_PTR2IDX(shadow[rx_number]))); rx_number++; - /* Interpret 'dq' from a driver perspective. */ - /* - * Parking isn't possible unless HELDACTIVE was set. NB, - * FORCEELIGIBLE implies HELDACTIVE, so we only need to - * check for HELDACTIVE to cover both. - */ - DPAA_ASSERT((dq->stat & QM_DQRR_STAT_FQ_HELDACTIVE) || - (res != qman_cb_dqrr_park)); - qm_dqrr_cdc_consume_1ptr(&p->p, dq, res == qman_cb_dqrr_park); - /* Move forward */ - qm_dqrr_next(&p->p); - /* - * Entry processed and consumed, increment our counter. The - * callback can request that we exit after consuming the - * entry, and we also exit if we reach our processing limit, - * so loop back only if neither of these conditions is met. - */ - } while (likely(++limit < poll_limit)); + --dqrr->fill; + } while (++limit < poll_limit); - return limit; + if (rx_number) + fq[0]->cb.dqrr_dpdk_pull_cb(fq, shadow, bufs, rx_number); + + /* Consume all the DQRR enries together */ + qm_out(DQRR_DCAP, (1 << 8) | consume); + + return rx_number; } u32 qman_portal_dequeue(struct rte_event ev[], unsigned int poll_limit, diff --git a/drivers/bus/dpaa/include/fsl_qman.h b/drivers/bus/dpaa/include/fsl_qman.h index 99e46e1283..e9793f30de 100644 --- a/drivers/bus/dpaa/include/fsl_qman.h +++ b/drivers/bus/dpaa/include/fsl_qman.h @@ -1131,6 +1131,14 @@ typedef enum qman_cb_dqrr_result (*qman_dpdk_cb_dqrr)(void *event, const struct qm_dqrr_entry *dqrr, void **bd); +/* This callback type is used when handling buffers in dpdk pull mode */ +typedef void (*qman_dpdk_pull_cb_dqrr)(struct qman_fq **fq, + struct qm_dqrr_entry **dqrr, + void **bufs, + int num_bufs); + +typedef void (*qman_dpdk_cb_prepare)(struct qm_dqrr_entry *dq, void **bufs); + /* * This callback type is used when handling ERNs, FQRNs and FQRLs via MR. They * are always consumed after the callback returns. @@ -1191,8 +1199,10 @@ enum qman_fq_state { struct qman_fq_cb { union { /* for dequeued frames */ qman_dpdk_cb_dqrr dqrr_dpdk_cb; + qman_dpdk_pull_cb_dqrr dqrr_dpdk_pull_cb; qman_cb_dqrr dqrr; }; + qman_dpdk_cb_prepare dqrr_prepare; qman_cb_mr ern; /* for s/w ERNs */ qman_cb_mr fqs; /* frame-queue state changes*/ }; diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c index a0978c154c..9b69ef456e 100644 --- a/drivers/net/dpaa/dpaa_ethdev.c +++ b/drivers/net/dpaa/dpaa_ethdev.c @@ -503,7 +503,11 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, QM_FQCTRL_CTXASTASHING | QM_FQCTRL_PREFERINCACHE; opts.fqd.context_a.stashing.exclusive = 0; - opts.fqd.context_a.stashing.annotation_cl = + /* In muticore scenario stashing becomes a bottleneck on LS1046. + * So do not enable stashing in this case + */ + if (dpaa_svr_family != SVR_LS1046A_FAMILY) + opts.fqd.context_a.stashing.annotation_cl = DPAA_IF_RX_ANNOTATION_STASH; opts.fqd.context_a.stashing.data_cl = DPAA_IF_RX_DATA_STASH; opts.fqd.context_a.stashing.context_cl = @@ -526,7 +530,8 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, if (ret) DPAA_PMD_ERR("Channel/Queue association failed. fqid %d" " ret: %d", rxq->fqid, ret); - rxq->cb.dqrr_dpdk_cb = dpaa_rx_cb; + rxq->cb.dqrr_dpdk_pull_cb = dpaa_rx_cb; + rxq->cb.dqrr_prepare = dpaa_rx_cb_prepare; rxq->is_static = true; } dev->data->rx_queues[queue_idx] = rxq; diff --git a/drivers/net/dpaa/dpaa_rxtx.c b/drivers/net/dpaa/dpaa_rxtx.c index f969ccfd18..0dea8e79a9 100644 --- a/drivers/net/dpaa/dpaa_rxtx.c +++ b/drivers/net/dpaa/dpaa_rxtx.c @@ -399,17 +399,80 @@ dpaa_eth_fd_to_mbuf(const struct qm_fd *fd, uint32_t ifid) return mbuf; } -enum qman_cb_dqrr_result dpaa_rx_cb(void *event __always_unused, - struct qman_portal *qm __always_unused, - struct qman_fq *fq, - const struct qm_dqrr_entry *dqrr, - void **bufs) +void +dpaa_rx_cb(struct qman_fq **fq, struct qm_dqrr_entry **dqrr, + void **bufs, int num_bufs) { - const struct qm_fd *fd = &dqrr->fd; + struct rte_mbuf *mbuf; + struct dpaa_bp_info *bp_info; + const struct qm_fd *fd; + void *ptr; + struct dpaa_if *dpaa_intf; + uint16_t offset, i; + uint32_t length; + uint8_t format; + + if (dpaa_svr_family != SVR_LS1046A_FAMILY) { + bp_info = DPAA_BPID_TO_POOL_INFO(dqrr[0]->fd.bpid); + ptr = rte_dpaa_mem_ptov(qm_fd_addr(&dqrr[0]->fd)); + rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF)); + bufs[0] = (struct rte_mbuf *)((char *)ptr - + bp_info->meta_data_size); + } - *bufs = dpaa_eth_fd_to_mbuf(fd, - ((struct dpaa_if *)fq->dpaa_intf)->ifid); - return qman_cb_dqrr_consume; + for (i = 0; i < num_bufs; i++) { + if (dpaa_svr_family != SVR_LS1046A_FAMILY && + i < num_bufs - 1) { + bp_info = DPAA_BPID_TO_POOL_INFO(dqrr[i + 1]->fd.bpid); + ptr = rte_dpaa_mem_ptov(qm_fd_addr(&dqrr[i + 1]->fd)); + rte_prefetch0((void *)((uint8_t *)ptr + + DEFAULT_RX_ICEOF)); + bufs[i + 1] = (struct rte_mbuf *)((char *)ptr - + bp_info->meta_data_size); + } + + fd = &dqrr[i]->fd; + dpaa_intf = fq[i]->dpaa_intf; + + format = (fd->opaque & DPAA_FD_FORMAT_MASK) >> + DPAA_FD_FORMAT_SHIFT; + if (unlikely(format == qm_fd_sg)) { + bufs[i] = dpaa_eth_sg_to_mbuf(fd, dpaa_intf->ifid); + continue; + } + + offset = (fd->opaque & DPAA_FD_OFFSET_MASK) >> + DPAA_FD_OFFSET_SHIFT; + length = fd->opaque & DPAA_FD_LENGTH_MASK; + + mbuf = bufs[i]; + mbuf->data_off = offset; + mbuf->data_len = length; + mbuf->pkt_len = length; + mbuf->port = dpaa_intf->ifid; + + mbuf->nb_segs = 1; + mbuf->ol_flags = 0; + mbuf->next = NULL; + rte_mbuf_refcnt_set(mbuf, 1); + dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr); + } +} + +void dpaa_rx_cb_prepare(struct qm_dqrr_entry *dq, void **bufs) +{ + struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(dq->fd.bpid); + void *ptr = rte_dpaa_mem_ptov(qm_fd_addr(&dq->fd)); + + /* In case of LS1046, annotation stashing is disabled due to L2 cache + * being bottleneck in case of multicore scanario for this platform. + * So we prefetch the annoation beforehand, so that it is available + * in cache when accessed. + */ + if (dpaa_svr_family == SVR_LS1046A_FAMILY) + rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF)); + + *bufs = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size); } static uint16_t diff --git a/drivers/net/dpaa/dpaa_rxtx.h b/drivers/net/dpaa/dpaa_rxtx.h index 29d8f95a25..d3e6351643 100644 --- a/drivers/net/dpaa/dpaa_rxtx.h +++ b/drivers/net/dpaa/dpaa_rxtx.h @@ -268,9 +268,8 @@ int dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf, struct qm_fd *fd, uint32_t bpid); -enum qman_cb_dqrr_result dpaa_rx_cb(void *event, - struct qman_portal *qm, - struct qman_fq *fq, - const struct qm_dqrr_entry *dqrr, - void **bd); +void dpaa_rx_cb(struct qman_fq **fq, + struct qm_dqrr_entry **dqrr, void **bufs, int num_bufs); + +void dpaa_rx_cb_prepare(struct qm_dqrr_entry *dq, void **bufs); #endif