From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, olivier.matz@6wind.com,
amorenoz@redhat.com, david.marchand@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH v2 10/44] net/virtio: force IOVA as VA mode for Virtio-user
Date: Tue, 19 Jan 2021 22:24:33 +0100 [thread overview]
Message-ID: <20210119212507.1043636-11-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20210119212507.1043636-1-maxime.coquelin@redhat.com>
At least Vhost-user backend of Virtio-user PMD requires
IOVA as VA mode. Until now, it was implemented as a hack
by forcing to use mbuf's buf_addr field instead of buf_iova.
This patch removes all this logic and just fails probing
if IOVA as VA mode is not selected. It simplifies the
code overall, and removes some bus-specific logic from
generic virtio_ethdev.c.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
drivers/net/virtio/virtio_ethdev.c | 15 ---------
drivers/net/virtio/virtio_rxtx.c | 34 ++++++++------------
drivers/net/virtio/virtio_rxtx_packed.h | 2 +-
drivers/net/virtio/virtio_rxtx_packed_avx.h | 8 ++---
drivers/net/virtio/virtio_rxtx_packed_neon.h | 8 ++---
drivers/net/virtio/virtio_rxtx_simple.h | 3 +-
drivers/net/virtio/virtio_user_ethdev.c | 1 +
drivers/net/virtio/virtqueue.h | 25 +-------------
8 files changed, 26 insertions(+), 70 deletions(-)
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 13d5a76376..da0e168355 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -576,21 +576,6 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
hw->cvq = cvq;
}
- /* For virtio_user case (that is when hw->virtio_user_dev is not NULL),
- * we use virtual address. And we need properly set _offset_, please see
- * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
- */
- if (hw->bus_type == VIRTIO_BUS_PCI_LEGACY || hw->bus_type == VIRTIO_BUS_PCI_MODERN) {
- vq->offset = offsetof(struct rte_mbuf, buf_iova);
- } else if (hw->bus_type == VIRTIO_BUS_USER) {
- vq->vq_ring_mem = (uintptr_t)mz->addr;
- vq->offset = offsetof(struct rte_mbuf, buf_addr);
- if (queue_type == VTNET_TQ)
- txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
- else if (queue_type == VTNET_CQ)
- cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
- }
-
if (queue_type == VTNET_TQ) {
struct virtio_tx_region *txr;
unsigned int i;
diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 622d4bf201..6875c8fbee 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -271,13 +271,10 @@ virtqueue_enqueue_refill_inorder(struct virtqueue *vq,
dxp->cookie = (void *)cookies[i];
dxp->ndescs = 1;
- start_dp[idx].addr =
- VIRTIO_MBUF_ADDR(cookies[i], vq) +
- RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
- start_dp[idx].len =
- cookies[i]->buf_len -
- RTE_PKTMBUF_HEADROOM +
- hw->vtnet_hdr_size;
+ start_dp[idx].addr = cookies[i]->buf_iova +
+ RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
+ start_dp[idx].len = cookies[i]->buf_len -
+ RTE_PKTMBUF_HEADROOM + hw->vtnet_hdr_size;
start_dp[idx].flags = VRING_DESC_F_WRITE;
vq_update_avail_ring(vq, idx);
@@ -313,12 +310,10 @@ virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf **cookie,
dxp->cookie = (void *)cookie[i];
dxp->ndescs = 1;
- start_dp[idx].addr =
- VIRTIO_MBUF_ADDR(cookie[i], vq) +
+ start_dp[idx].addr = cookie[i]->buf_iova +
RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
- start_dp[idx].len =
- cookie[i]->buf_len - RTE_PKTMBUF_HEADROOM +
- hw->vtnet_hdr_size;
+ start_dp[idx].len = cookie[i]->buf_len -
+ RTE_PKTMBUF_HEADROOM + hw->vtnet_hdr_size;
start_dp[idx].flags = VRING_DESC_F_WRITE;
vq->vq_desc_head_idx = start_dp[idx].next;
vq_update_avail_ring(vq, idx);
@@ -355,10 +350,10 @@ virtqueue_enqueue_recv_refill_packed(struct virtqueue *vq,
dxp->cookie = (void *)cookie[i];
dxp->ndescs = 1;
- start_dp[idx].addr = VIRTIO_MBUF_ADDR(cookie[i], vq) +
- RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
- start_dp[idx].len = cookie[i]->buf_len - RTE_PKTMBUF_HEADROOM
- + hw->vtnet_hdr_size;
+ start_dp[idx].addr = cookie[i]->buf_iova +
+ RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
+ start_dp[idx].len = cookie[i]->buf_len -
+ RTE_PKTMBUF_HEADROOM + hw->vtnet_hdr_size;
vq->vq_desc_head_idx = dxp->next;
if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
@@ -455,8 +450,7 @@ virtqueue_enqueue_xmit_inorder(struct virtnet_tx *txvq,
else
virtqueue_xmit_offload(hdr, cookies[i], true);
- start_dp[idx].addr =
- VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq) - head_size;
+ start_dp[idx].addr = rte_mbuf_data_iova(cookies[i]) - head_size;
start_dp[idx].len = cookies[i]->data_len + head_size;
start_dp[idx].flags = 0;
@@ -503,7 +497,7 @@ virtqueue_enqueue_xmit_packed_fast(struct virtnet_tx *txvq,
else
virtqueue_xmit_offload(hdr, cookie, true);
- dp->addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq) - head_size;
+ dp->addr = rte_mbuf_data_iova(cookie) - head_size;
dp->len = cookie->data_len + head_size;
dp->id = id;
@@ -590,7 +584,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
virtqueue_xmit_offload(hdr, cookie, vq->hw->has_tx_offload);
do {
- start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
+ start_dp[idx].addr = rte_mbuf_data_iova(cookie);
start_dp[idx].len = cookie->data_len;
if (prepend_header) {
start_dp[idx].addr -= head_size;
diff --git a/drivers/net/virtio/virtio_rxtx_packed.h b/drivers/net/virtio/virtio_rxtx_packed.h
index 016b6fb247..c0fad41c3d 100644
--- a/drivers/net/virtio/virtio_rxtx_packed.h
+++ b/drivers/net/virtio/virtio_rxtx_packed.h
@@ -288,7 +288,7 @@ virtio_recv_refill_packed_vec(struct virtnet_rx *rxvq,
dxp = &vq->vq_descx[idx + i];
dxp->cookie = (void *)cookie[total_num + i];
- addr = VIRTIO_MBUF_ADDR(cookie[total_num + i], vq) +
+ addr = cookie[total_num + i]->buf_iova +
RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
start_dp[idx + i].addr = addr;
start_dp[idx + i].len = cookie[total_num + i]->buf_len
diff --git a/drivers/net/virtio/virtio_rxtx_packed_avx.h b/drivers/net/virtio/virtio_rxtx_packed_avx.h
index f831828845..2c610d57de 100644
--- a/drivers/net/virtio/virtio_rxtx_packed_avx.h
+++ b/drivers/net/virtio/virtio_rxtx_packed_avx.h
@@ -71,13 +71,13 @@ virtqueue_enqueue_batch_packed_vec(struct virtnet_tx *txvq,
}
__m512i descs_base = _mm512_set_epi64(tx_pkts[3]->data_len,
- VIRTIO_MBUF_ADDR(tx_pkts[3], vq),
+ tx_pkts[3]->buf_iova,
tx_pkts[2]->data_len,
- VIRTIO_MBUF_ADDR(tx_pkts[2], vq),
+ tx_pkts[2]->buf_iova,
tx_pkts[1]->data_len,
- VIRTIO_MBUF_ADDR(tx_pkts[1], vq),
+ tx_pkts[1]->buf_iova,
tx_pkts[0]->data_len,
- VIRTIO_MBUF_ADDR(tx_pkts[0], vq));
+ tx_pkts[0]->buf_iova);
/* id offset and data offset */
__m512i data_offsets = _mm512_set_epi64((uint64_t)3 << ID_BITS_OFFSET,
diff --git a/drivers/net/virtio/virtio_rxtx_packed_neon.h b/drivers/net/virtio/virtio_rxtx_packed_neon.h
index 01c77b712d..ae2d099c0b 100644
--- a/drivers/net/virtio/virtio_rxtx_packed_neon.h
+++ b/drivers/net/virtio/virtio_rxtx_packed_neon.h
@@ -97,12 +97,12 @@ virtqueue_enqueue_batch_packed_vec(struct virtnet_tx *txvq,
uint64x2x2_t desc[PACKED_BATCH_SIZE / 2];
uint64x2_t base_addr0 = {
- VIRTIO_MBUF_ADDR(tx_pkts[0], vq) + tx_pkts[0]->data_off,
- VIRTIO_MBUF_ADDR(tx_pkts[1], vq) + tx_pkts[1]->data_off
+ tx_pkts[0]->buf_iova + tx_pkts[0]->data_off,
+ tx_pkts[1]->buf_iova + tx_pkts[1]->data_off
};
uint64x2_t base_addr1 = {
- VIRTIO_MBUF_ADDR(tx_pkts[2], vq) + tx_pkts[2]->data_off,
- VIRTIO_MBUF_ADDR(tx_pkts[3], vq) + tx_pkts[3]->data_off
+ tx_pkts[2]->buf_iova + tx_pkts[2]->data_off,
+ tx_pkts[3]->buf_iova + tx_pkts[3]->data_off
};
desc[0].val[0] = base_addr0;
diff --git a/drivers/net/virtio/virtio_rxtx_simple.h b/drivers/net/virtio/virtio_rxtx_simple.h
index 3d1296a23c..f2a5aedf97 100644
--- a/drivers/net/virtio/virtio_rxtx_simple.h
+++ b/drivers/net/virtio/virtio_rxtx_simple.h
@@ -43,8 +43,7 @@ virtio_rxq_rearm_vec(struct virtnet_rx *rxvq)
p = (uintptr_t)&sw_ring[i]->rearm_data;
*(uint64_t *)p = rxvq->mbuf_initializer;
- start_dp[i].addr =
- VIRTIO_MBUF_ADDR(sw_ring[i], vq) +
+ start_dp[i].addr = sw_ring[i]->buf_iova +
RTE_PKTMBUF_HEADROOM - vq->hw->vtnet_hdr_size;
start_dp[i].len = sw_ring[i]->buf_len -
RTE_PKTMBUF_HEADROOM + vq->hw->vtnet_hdr_size;
diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c
index 620ecb126c..241fe373b9 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -953,6 +953,7 @@ static struct rte_vdev_driver virtio_user_driver = {
.remove = virtio_user_pmd_remove,
.dma_map = virtio_user_pmd_dma_map,
.dma_unmap = virtio_user_pmd_dma_unmap,
+ .drv_flags = RTE_VDEV_DRV_NEED_IOVA_AS_VA,
};
RTE_PMD_REGISTER_VDEV(net_virtio_user, virtio_user_driver);
diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h
index d78b943443..7611317581 100644
--- a/drivers/net/virtio/virtqueue.h
+++ b/drivers/net/virtio/virtqueue.h
@@ -113,29 +113,6 @@ virtqueue_store_flags_packed(struct vring_packed_desc *dp,
#define VIRTQUEUE_MAX_NAME_SZ 32
-#ifdef RTE_VIRTIO_USER
-/**
- * Return the physical address (or virtual address in case of
- * virtio-user) of mbuf data buffer.
- *
- * The address is firstly casted to the word size (sizeof(uintptr_t))
- * before casting it to uint64_t. This is to make it work with different
- * combination of word size (64 bit and 32 bit) and virtio device
- * (virtio-pci and virtio-user).
- */
-#define VIRTIO_MBUF_ADDR(mb, vq) \
- ((uint64_t)(*(uintptr_t *)((uintptr_t)(mb) + (vq)->offset)))
-#else
-#define VIRTIO_MBUF_ADDR(mb, vq) ((mb)->buf_iova)
-#endif
-
-/**
- * Return the physical address (or virtual address in case of
- * virtio-user) of mbuf data buffer, taking care of mbuf data offset
- */
-#define VIRTIO_MBUF_DATA_DMA_ADDR(mb, vq) \
- (VIRTIO_MBUF_ADDR(mb, vq) + (mb)->data_off)
-
#define VTNET_SQ_RQ_QUEUE_IDX 0
#define VTNET_SQ_TQ_QUEUE_IDX 1
#define VTNET_SQ_CQ_QUEUE_IDX 2
@@ -763,7 +740,7 @@ virtqueue_enqueue_xmit_packed(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
do {
uint16_t flags;
- start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
+ start_dp[idx].addr = rte_mbuf_data_iova(cookie);
start_dp[idx].len = cookie->data_len;
if (prepend_header) {
start_dp[idx].addr -= head_size;
--
2.29.2
next prev parent reply other threads:[~2021-01-19 21:27 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-19 21:24 [dpdk-dev] [PATCH v2 00/44] net/virtio: Virtio PMD rework Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 01/44] bus/vdev: add helper to get vdev from eth dev Maxime Coquelin
2021-01-20 0:56 ` Thomas Monjalon
2021-01-25 10:53 ` Maxime Coquelin
2021-01-25 11:04 ` Thomas Monjalon
2021-01-21 8:58 ` Xia, Chenbo
2021-01-25 14:51 ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 02/44] bus/vdev: add driver IOVA VA mode requirement Maxime Coquelin
2021-01-20 15:32 ` David Marchand
2021-01-20 17:47 ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 03/44] net/virtio: fix getting old status on reconnect Maxime Coquelin
2021-01-21 7:12 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 04/44] net/virtio: introduce Virtio bus type Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 05/44] net/virtio: refactor virtio-user device Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 06/44] net/virtio: introduce PCI device metadata Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 07/44] net/virtio: move PCI device init in dedicated file Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 08/44] net/virtio: move PCI specific dev init to PCI ethdev init Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 09/44] net/virtio: move MSIX detection to PCI ethdev Maxime Coquelin
2021-01-21 7:12 ` Xia, Chenbo
2021-01-25 12:41 ` Maxime Coquelin
2021-01-19 21:24 ` Maxime Coquelin [this message]
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 11/44] net/virtio: store PCI type in Virtio device metadata Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 12/44] net/virtio: add callback for device closing Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 13/44] net/virtio: validate features at bus level Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 14/44] net/virtio: remove bus type enum Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 15/44] net/virtio: move PCI-specific fields to PCI device Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 16/44] net/virtio: pack virtio HW struct Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 17/44] net/virtio: move legacy IO to Virtio PCI Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 18/44] net/virtio: introduce generic virtio header Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 19/44] net/virtio: move features definition to generic header Maxime Coquelin
2021-01-21 6:47 ` Xia, Chenbo
2021-01-25 12:35 ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 20/44] net/virtio: move virtqueue defines in " Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 21/44] net/virtio: move config definitions to " Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 22/44] net/virtio: make interrupt handling more generic Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 23/44] net/virtio: move vring alignment to generic header Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 24/44] net/virtio: remove last PCI refs in non-PCI code Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 25/44] net/virtio: make Vhost-user req sender consistent Maxime Coquelin
2021-01-21 8:50 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 26/44] net/virtio: add Virtio-user ops to set owner Maxime Coquelin
2021-01-22 3:27 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 27/44] net/virtio: add Virtio-user features ops Maxime Coquelin
2021-01-22 7:25 ` Xia, Chenbo
2021-01-25 14:53 ` Maxime Coquelin
2021-01-22 8:46 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 28/44] net/virtio: add Virtio-user protocol " Maxime Coquelin
2021-01-22 7:27 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 29/44] net/virtio: add Virtio-user memory tables ops Maxime Coquelin
2021-01-22 7:34 ` Xia, Chenbo
2021-01-25 14:56 ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 30/44] net/virtio: add Virtio-user vring setting ops Maxime Coquelin
2021-01-22 7:49 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 31/44] net/virtio: add Virtio-user vring file ops Maxime Coquelin
2021-01-22 8:01 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 32/44] net/virtio: add Virtio-user vring address ops Maxime Coquelin
2021-01-22 8:02 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 33/44] net/virtio: add Virtio-user status ops Maxime Coquelin
2021-01-22 8:02 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 34/44] net/virtio: remove useless request ops Maxime Coquelin
2021-01-22 8:10 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 35/44] net/virtio: improve Virtio-user errors handling Maxime Coquelin
2021-01-22 8:10 ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 36/44] net/virtio: move Vhost-user reqs to Vhost-user backend Maxime Coquelin
2021-01-21 8:56 ` Xia, Chenbo
2021-01-25 14:50 ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 37/44] net/virtio: make server mode blocking Maxime Coquelin
2021-01-22 8:19 ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 38/44] net/virtio: move protocol features to Vhost-user Maxime Coquelin
2021-01-22 8:20 ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 39/44] net/virtio: introduce backend data Maxime Coquelin
2021-01-22 8:26 ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 40/44] net/virtio: move Vhost-user specifics to its backend Maxime Coquelin
2021-01-22 8:49 ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 41/44] net/virtio: move Vhost-kernel data " Maxime Coquelin
2021-01-22 8:55 ` Xia, Chenbo
2021-01-25 14:59 ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 42/44] net/virtio: move Vhost-vDPA " Maxime Coquelin
2021-01-22 9:06 ` Xia, Chenbo
2021-01-25 15:02 ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 43/44] net/virtio: improve Vhost-user error logging Maxime Coquelin
2021-01-22 9:11 ` Xia, Chenbo
2021-01-25 15:04 ` Maxime Coquelin
2021-01-26 6:10 ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 44/44] net/virtio: handle Virtio-user setup failure properly Maxime Coquelin
2021-01-22 9:24 ` Xia, Chenbo
2021-01-25 16:16 ` Maxime Coquelin
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