From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 1804B684E for ; Thu, 18 Aug 2016 15:41:10 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP; 18 Aug 2016 06:41:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,539,1464678000"; d="scan'208";a="750443080" Received: from unknown (HELO dpdk5.sh.intel.com) ([10.239.129.118]) by FMSMGA003.fm.intel.com with ESMTP; 18 Aug 2016 06:41:10 -0700 From: Zhihong Wang To: dev@dpdk.org Cc: maxime.coquelin@redhat.com, yuanhan.liu@linux.intel.com, Zhihong Wang Date: Thu, 18 Aug 2016 02:33:07 -0400 Message-Id: <1471501991-37257-3-git-send-email-zhihong.wang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1471501991-37257-1-git-send-email-zhihong.wang@intel.com> References: <1471319402-112998-1-git-send-email-zhihong.wang@intel.com> <1471501991-37257-1-git-send-email-zhihong.wang@intel.com> Subject: [dpdk-dev] [PATCH v2 2/6] vhost: remove obsolete X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Aug 2016 13:41:11 -0000 This patch removes obsolete functions. Signed-off-by: Zhihong Wang --- lib/librte_vhost/vhost_rxtx.c | 408 ------------------------------------------ 1 file changed, 408 deletions(-) diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c index 8e6d782..939957d 100644 --- a/lib/librte_vhost/vhost_rxtx.c +++ b/lib/librte_vhost/vhost_rxtx.c @@ -125,414 +125,6 @@ virtio_enqueue_offload(struct rte_mbuf *m_buf, struct virtio_net_hdr *net_hdr) } } -static inline void -copy_virtio_net_hdr(struct virtio_net *dev, uint64_t desc_addr, - struct virtio_net_hdr_mrg_rxbuf hdr) -{ - if (dev->vhost_hlen == sizeof(struct virtio_net_hdr_mrg_rxbuf)) - *(struct virtio_net_hdr_mrg_rxbuf *)(uintptr_t)desc_addr = hdr; - else - *(struct virtio_net_hdr *)(uintptr_t)desc_addr = hdr.hdr; -} - -static inline int __attribute__((always_inline)) -copy_mbuf_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq, - struct rte_mbuf *m, uint16_t desc_idx) -{ - uint32_t desc_avail, desc_offset; - uint32_t mbuf_avail, mbuf_offset; - uint32_t cpy_len; - struct vring_desc *desc; - uint64_t desc_addr; - struct virtio_net_hdr_mrg_rxbuf virtio_hdr = {{0, 0, 0, 0, 0, 0}, 0}; - - desc = &vq->desc[desc_idx]; - desc_addr = gpa_to_vva(dev, desc->addr); - /* - * Checking of 'desc_addr' placed outside of 'unlikely' macro to avoid - * performance issue with some versions of gcc (4.8.4 and 5.3.0) which - * otherwise stores offset on the stack instead of in a register. - */ - if (unlikely(desc->len < dev->vhost_hlen) || !desc_addr) - return -1; - - rte_prefetch0((void *)(uintptr_t)desc_addr); - - virtio_enqueue_offload(m, &virtio_hdr.hdr); - copy_virtio_net_hdr(dev, desc_addr, virtio_hdr); - vhost_log_write(dev, desc->addr, dev->vhost_hlen); - PRINT_PACKET(dev, (uintptr_t)desc_addr, dev->vhost_hlen, 0); - - desc_offset = dev->vhost_hlen; - desc_avail = desc->len - dev->vhost_hlen; - - mbuf_avail = rte_pktmbuf_data_len(m); - mbuf_offset = 0; - while (mbuf_avail != 0 || m->next != NULL) { - /* done with current mbuf, fetch next */ - if (mbuf_avail == 0) { - m = m->next; - - mbuf_offset = 0; - mbuf_avail = rte_pktmbuf_data_len(m); - } - - /* done with current desc buf, fetch next */ - if (desc_avail == 0) { - if ((desc->flags & VRING_DESC_F_NEXT) == 0) { - /* Room in vring buffer is not enough */ - return -1; - } - if (unlikely(desc->next >= vq->size)) - return -1; - - desc = &vq->desc[desc->next]; - desc_addr = gpa_to_vva(dev, desc->addr); - if (unlikely(!desc_addr)) - return -1; - - desc_offset = 0; - desc_avail = desc->len; - } - - cpy_len = RTE_MIN(desc_avail, mbuf_avail); - rte_memcpy((void *)((uintptr_t)(desc_addr + desc_offset)), - rte_pktmbuf_mtod_offset(m, void *, mbuf_offset), - cpy_len); - vhost_log_write(dev, desc->addr + desc_offset, cpy_len); - PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset), - cpy_len, 0); - - mbuf_avail -= cpy_len; - mbuf_offset += cpy_len; - desc_avail -= cpy_len; - desc_offset += cpy_len; - } - - return 0; -} - -/** - * This function adds buffers to the virtio devices RX virtqueue. Buffers can - * be received from the physical port or from another virtio device. A packet - * count is returned to indicate the number of packets that are succesfully - * added to the RX queue. This function works when the mbuf is scattered, but - * it doesn't support the mergeable feature. - */ -static inline uint32_t __attribute__((always_inline)) -virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id, - struct rte_mbuf **pkts, uint32_t count) -{ - struct vhost_virtqueue *vq; - uint16_t avail_idx, free_entries, start_idx; - uint16_t desc_indexes[MAX_PKT_BURST]; - uint16_t used_idx; - uint32_t i; - - LOG_DEBUG(VHOST_DATA, "(%d) %s\n", dev->vid, __func__); - if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) { - RTE_LOG(ERR, VHOST_DATA, "(%d) %s: invalid virtqueue idx %d.\n", - dev->vid, __func__, queue_id); - return 0; - } - - vq = dev->virtqueue[queue_id]; - if (unlikely(vq->enabled == 0)) - return 0; - - avail_idx = *((volatile uint16_t *)&vq->avail->idx); - start_idx = vq->last_used_idx; - free_entries = avail_idx - start_idx; - count = RTE_MIN(count, free_entries); - count = RTE_MIN(count, (uint32_t)MAX_PKT_BURST); - if (count == 0) - return 0; - - LOG_DEBUG(VHOST_DATA, "(%d) start_idx %d | end_idx %d\n", - dev->vid, start_idx, start_idx + count); - - /* Retrieve all of the desc indexes first to avoid caching issues. */ - rte_prefetch0(&vq->avail->ring[start_idx & (vq->size - 1)]); - for (i = 0; i < count; i++) { - used_idx = (start_idx + i) & (vq->size - 1); - desc_indexes[i] = vq->avail->ring[used_idx]; - vq->used->ring[used_idx].id = desc_indexes[i]; - vq->used->ring[used_idx].len = pkts[i]->pkt_len + - dev->vhost_hlen; - vhost_log_used_vring(dev, vq, - offsetof(struct vring_used, ring[used_idx]), - sizeof(vq->used->ring[used_idx])); - } - - rte_prefetch0(&vq->desc[desc_indexes[0]]); - for (i = 0; i < count; i++) { - uint16_t desc_idx = desc_indexes[i]; - int err; - - err = copy_mbuf_to_desc(dev, vq, pkts[i], desc_idx); - if (unlikely(err)) { - used_idx = (start_idx + i) & (vq->size - 1); - vq->used->ring[used_idx].len = dev->vhost_hlen; - vhost_log_used_vring(dev, vq, - offsetof(struct vring_used, ring[used_idx]), - sizeof(vq->used->ring[used_idx])); - } - - if (i + 1 < count) - rte_prefetch0(&vq->desc[desc_indexes[i+1]]); - } - - rte_smp_wmb(); - - *(volatile uint16_t *)&vq->used->idx += count; - vq->last_used_idx += count; - vhost_log_used_vring(dev, vq, - offsetof(struct vring_used, idx), - sizeof(vq->used->idx)); - - /* flush used->idx update before we read avail->flags. */ - rte_mb(); - - /* Kick the guest if necessary. */ - if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT) - && (vq->callfd >= 0)) - eventfd_write(vq->callfd, (eventfd_t)1); - return count; -} - -static inline int -fill_vec_buf(struct vhost_virtqueue *vq, uint32_t avail_idx, - uint32_t *allocated, uint32_t *vec_idx, - struct buf_vector *buf_vec) -{ - uint16_t idx = vq->avail->ring[avail_idx & (vq->size - 1)]; - uint32_t vec_id = *vec_idx; - uint32_t len = *allocated; - - while (1) { - if (unlikely(vec_id >= BUF_VECTOR_MAX || idx >= vq->size)) - return -1; - - len += vq->desc[idx].len; - buf_vec[vec_id].buf_addr = vq->desc[idx].addr; - buf_vec[vec_id].buf_len = vq->desc[idx].len; - buf_vec[vec_id].desc_idx = idx; - vec_id++; - - if ((vq->desc[idx].flags & VRING_DESC_F_NEXT) == 0) - break; - - idx = vq->desc[idx].next; - } - - *allocated = len; - *vec_idx = vec_id; - - return 0; -} - -/* - * Returns -1 on fail, 0 on success - */ -static inline int -reserve_avail_buf_mergeable(struct vhost_virtqueue *vq, uint32_t size, - uint16_t *end, struct buf_vector *buf_vec) -{ - uint16_t cur_idx; - uint16_t avail_idx; - uint32_t allocated = 0; - uint32_t vec_idx = 0; - uint16_t tries = 0; - - cur_idx = vq->last_used_idx; - - while (1) { - avail_idx = *((volatile uint16_t *)&vq->avail->idx); - if (unlikely(cur_idx == avail_idx)) - return -1; - - if (unlikely(fill_vec_buf(vq, cur_idx, &allocated, - &vec_idx, buf_vec) < 0)) - return -1; - - cur_idx++; - tries++; - - if (allocated >= size) - break; - - /* - * if we tried all available ring items, and still - * can't get enough buf, it means something abnormal - * happened. - */ - if (unlikely(tries >= vq->size)) - return -1; - } - - *end = cur_idx; - return 0; -} - -static inline uint32_t __attribute__((always_inline)) -copy_mbuf_to_desc_mergeable(struct virtio_net *dev, struct vhost_virtqueue *vq, - uint16_t end_idx, struct rte_mbuf *m, - struct buf_vector *buf_vec) -{ - struct virtio_net_hdr_mrg_rxbuf virtio_hdr = {{0, 0, 0, 0, 0, 0}, 0}; - uint32_t vec_idx = 0; - uint16_t start_idx = vq->last_used_idx; - uint16_t cur_idx = start_idx; - uint64_t desc_addr; - uint32_t mbuf_offset, mbuf_avail; - uint32_t desc_offset, desc_avail; - uint32_t cpy_len; - uint16_t desc_idx, used_idx; - - if (unlikely(m == NULL)) - return 0; - - LOG_DEBUG(VHOST_DATA, "(%d) current index %d | end index %d\n", - dev->vid, cur_idx, end_idx); - - desc_addr = gpa_to_vva(dev, buf_vec[vec_idx].buf_addr); - if (buf_vec[vec_idx].buf_len < dev->vhost_hlen || !desc_addr) - return 0; - - rte_prefetch0((void *)(uintptr_t)desc_addr); - - virtio_hdr.num_buffers = end_idx - start_idx; - LOG_DEBUG(VHOST_DATA, "(%d) RX: num merge buffers %d\n", - dev->vid, virtio_hdr.num_buffers); - - virtio_enqueue_offload(m, &virtio_hdr.hdr); - copy_virtio_net_hdr(dev, desc_addr, virtio_hdr); - vhost_log_write(dev, buf_vec[vec_idx].buf_addr, dev->vhost_hlen); - PRINT_PACKET(dev, (uintptr_t)desc_addr, dev->vhost_hlen, 0); - - desc_avail = buf_vec[vec_idx].buf_len - dev->vhost_hlen; - desc_offset = dev->vhost_hlen; - - mbuf_avail = rte_pktmbuf_data_len(m); - mbuf_offset = 0; - while (mbuf_avail != 0 || m->next != NULL) { - /* done with current desc buf, get the next one */ - if (desc_avail == 0) { - desc_idx = buf_vec[vec_idx].desc_idx; - - if (!(vq->desc[desc_idx].flags & VRING_DESC_F_NEXT)) { - /* Update used ring with desc information */ - used_idx = cur_idx++ & (vq->size - 1); - vq->used->ring[used_idx].id = desc_idx; - vq->used->ring[used_idx].len = desc_offset; - vhost_log_used_vring(dev, vq, - offsetof(struct vring_used, - ring[used_idx]), - sizeof(vq->used->ring[used_idx])); - } - - vec_idx++; - desc_addr = gpa_to_vva(dev, buf_vec[vec_idx].buf_addr); - if (unlikely(!desc_addr)) - return 0; - - /* Prefetch buffer address. */ - rte_prefetch0((void *)(uintptr_t)desc_addr); - desc_offset = 0; - desc_avail = buf_vec[vec_idx].buf_len; - } - - /* done with current mbuf, get the next one */ - if (mbuf_avail == 0) { - m = m->next; - - mbuf_offset = 0; - mbuf_avail = rte_pktmbuf_data_len(m); - } - - cpy_len = RTE_MIN(desc_avail, mbuf_avail); - rte_memcpy((void *)((uintptr_t)(desc_addr + desc_offset)), - rte_pktmbuf_mtod_offset(m, void *, mbuf_offset), - cpy_len); - vhost_log_write(dev, buf_vec[vec_idx].buf_addr + desc_offset, - cpy_len); - PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset), - cpy_len, 0); - - mbuf_avail -= cpy_len; - mbuf_offset += cpy_len; - desc_avail -= cpy_len; - desc_offset += cpy_len; - } - - used_idx = cur_idx & (vq->size - 1); - vq->used->ring[used_idx].id = buf_vec[vec_idx].desc_idx; - vq->used->ring[used_idx].len = desc_offset; - vhost_log_used_vring(dev, vq, - offsetof(struct vring_used, ring[used_idx]), - sizeof(vq->used->ring[used_idx])); - - return end_idx - start_idx; -} - -static inline uint32_t __attribute__((always_inline)) -virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id, - struct rte_mbuf **pkts, uint32_t count) -{ - struct vhost_virtqueue *vq; - uint32_t pkt_idx = 0, nr_used = 0; - uint16_t end; - struct buf_vector buf_vec[BUF_VECTOR_MAX]; - - LOG_DEBUG(VHOST_DATA, "(%d) %s\n", dev->vid, __func__); - if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) { - RTE_LOG(ERR, VHOST_DATA, "(%d) %s: invalid virtqueue idx %d.\n", - dev->vid, __func__, queue_id); - return 0; - } - - vq = dev->virtqueue[queue_id]; - if (unlikely(vq->enabled == 0)) - return 0; - - count = RTE_MIN((uint32_t)MAX_PKT_BURST, count); - if (count == 0) - return 0; - - for (pkt_idx = 0; pkt_idx < count; pkt_idx++) { - uint32_t pkt_len = pkts[pkt_idx]->pkt_len + dev->vhost_hlen; - - if (unlikely(reserve_avail_buf_mergeable(vq, pkt_len, - &end, buf_vec) < 0)) { - LOG_DEBUG(VHOST_DATA, - "(%d) failed to get enough desc from vring\n", - dev->vid); - break; - } - - nr_used = copy_mbuf_to_desc_mergeable(dev, vq, end, - pkts[pkt_idx], buf_vec); - rte_smp_wmb(); - - *(volatile uint16_t *)&vq->used->idx += nr_used; - vhost_log_used_vring(dev, vq, offsetof(struct vring_used, idx), - sizeof(vq->used->idx)); - vq->last_used_idx += nr_used; - } - - if (likely(pkt_idx)) { - /* flush used->idx update before we read avail->flags. */ - rte_mb(); - - /* Kick the guest if necessary. */ - if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT) - && (vq->callfd >= 0)) - eventfd_write(vq->callfd, (eventfd_t)1); - } - - return pkt_idx; -} - static inline uint32_t __attribute__((always_inline)) loop_check(struct vhost_virtqueue *vq, uint16_t avail_idx, uint32_t pkt_left) { -- 2.7.4