From: Ouyang Changchun <changchun.ouyang@intel.com>
To: dev@dpdk.org
Cc: min.cao@intel.com
Subject: [dpdk-dev] [PATCH v4 1/2] virtio: Cleanup the existing codes in virtio-net PMD
Date: Thu, 29 May 2014 15:18:19 +0800 [thread overview]
Message-ID: <1401347900-25587-2-git-send-email-changchun.ouyang@intel.com> (raw)
In-Reply-To: <1401347900-25587-1-git-send-email-changchun.ouyang@intel.com>
This patch cleanups some coding style issue, and fixes some errors and warnings
reported by checkpatch.pl.
Signed-off-by: Ouyang Changchun <changchun.ouyang@intel.com>
Tested-by: Waterman Cao <waterman.cao@intel.com>
This patch passed Testpmd testing base on commit: 57f0ba5f8b8588dfa6ffcd001447ef6337afa6cd.
See test environment information as the following:
Fedora 20, Linux kernel 3.13.9, GCC 4.8.2 X86_64, Intel Xeon processor E5-2600 and E5-2600 v2 family
---
lib/librte_pmd_virtio/virtio_ethdev.c | 68 +++++++++++++++++++----------------
lib/librte_pmd_virtio/virtio_ethdev.h | 30 ++++++++--------
lib/librte_pmd_virtio/virtio_rxtx.c | 43 ++++++++++++++++------
lib/librte_pmd_virtio/virtqueue.h | 26 ++++++++------
4 files changed, 100 insertions(+), 67 deletions(-)
diff --git a/lib/librte_pmd_virtio/virtio_ethdev.c b/lib/librte_pmd_virtio/virtio_ethdev.c
index 49e236b..685bf90 100644
--- a/lib/librte_pmd_virtio/virtio_ethdev.c
+++ b/lib/librte_pmd_virtio/virtio_ethdev.c
@@ -134,7 +134,7 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
if (queue_type == VTNET_RQ) {
rte_snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
- dev->data->port_id, queue_idx);
+ dev->data->port_id, queue_idx);
vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
vq_size * sizeof(struct vq_desc_extra), CACHE_LINE_SIZE);
memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
@@ -146,8 +146,8 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
} else if(queue_type == VTNET_CQ) {
rte_snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
- dev->data->port_id);
vq = rte_zmalloc(vq_name, sizeof(struct virtqueue),
+ dev->data->port_id);
CACHE_LINE_SIZE);
memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
}
@@ -155,6 +155,7 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue\n", __func__);
return (-ENOMEM);
}
+
vq->hw = hw;
vq->port_id = dev->data->port_id;
vq->queue_id = queue_idx;
@@ -171,11 +172,12 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d\n", size, vq->vq_ring_size);
mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
- socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
+ socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
if (mz == NULL) {
rte_free(vq);
return (-ENOMEM);
}
+
/*
* Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
* and only accepts 32 bit page frame number.
@@ -186,6 +188,7 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
rte_free(vq);
return (-ENOMEM);
}
+
memset(mz->addr, 0, sizeof(mz->len));
vq->mz = mz;
vq->vq_ring_mem = mz->phys_addr;
@@ -197,8 +200,8 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
if (queue_type == VTNET_TQ) {
/*
- * For each xmit packet, allocate a virtio_net_hdr
- */
+ * For each xmit packet, allocate a virtio_net_hdr
+ */
rte_snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
dev->data->port_id, queue_idx);
vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
@@ -206,10 +209,12 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
socket_id, 0, CACHE_LINE_SIZE);
if (vq->virtio_net_hdr_mz == NULL) {
rte_free(vq);
- return (-ENOMEM);
+ return -ENOMEM;
}
- vq->virtio_net_hdr_mem = (void *)(uintptr_t)vq->virtio_net_hdr_mz->phys_addr;
- memset(vq->virtio_net_hdr_mz->addr, 0, vq_size * sizeof(struct virtio_net_hdr));
+ vq->virtio_net_hdr_mem =
+ (void *)(uintptr_t)vq->virtio_net_hdr_mz->phys_addr;
+ memset(vq->virtio_net_hdr_mz->addr, 0,
+ vq_size * sizeof(struct virtio_net_hdr));
} else if (queue_type == VTNET_CQ) {
/* Allocate a page for control vq command, data and status */
rte_snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
@@ -218,9 +223,10 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
PAGE_SIZE, socket_id, 0, CACHE_LINE_SIZE);
if (vq->virtio_net_hdr_mz == NULL) {
rte_free(vq);
- return (-ENOMEM);
+ return -ENOMEM;
}
- vq->virtio_net_hdr_mem = (void *)(uintptr_t)vq->virtio_net_hdr_mz->phys_addr;
+ vq->virtio_net_hdr_mem =
+ (void *)(uintptr_t)vq->virtio_net_hdr_mz->phys_addr;
memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
}
@@ -231,7 +237,7 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev,
VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN,
mz->phys_addr >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
*pvq = vq;
- return (0);
+ return 0;
}
static int
@@ -253,7 +259,7 @@ virtio_dev_cq_queue_setup(struct rte_eth_dev *dev,
}
hw->cvq = vq;
- return (0);
+ return 0;
}
static void
@@ -264,26 +270,27 @@ virtio_dev_close(struct rte_eth_dev *dev)
virtio_dev_stop(dev);
}
-
/*
* dev_ops for virtio, bare necessities for basic operation
*/
static struct eth_dev_ops virtio_eth_dev_ops = {
- .dev_configure = virtio_dev_configure,
- .dev_start = virtio_dev_start,
- .dev_stop = virtio_dev_stop,
- .dev_close = virtio_dev_close,
-
- .dev_infos_get = virtio_dev_info_get,
- .stats_get = virtio_dev_stats_get,
- .stats_reset = virtio_dev_stats_reset,
- .link_update = virtio_dev_link_update,
- .mac_addr_add = NULL,
- .mac_addr_remove = NULL,
- .rx_queue_setup = virtio_dev_rx_queue_setup,
- .rx_queue_release = virtio_dev_rx_queue_release, /* meaningfull only to multiple queue */
- .tx_queue_setup = virtio_dev_tx_queue_setup,
- .tx_queue_release = virtio_dev_tx_queue_release /* meaningfull only to multiple queue */
+ .dev_configure = virtio_dev_configure,
+ .dev_start = virtio_dev_start,
+ .dev_stop = virtio_dev_stop,
+ .dev_close = virtio_dev_close,
+
+ .dev_infos_get = virtio_dev_info_get,
+ .stats_get = virtio_dev_stats_get,
+ .stats_reset = virtio_dev_stats_reset,
+ .link_update = virtio_dev_link_update,
+ .mac_addr_add = NULL,
+ .mac_addr_remove = NULL,
+ .rx_queue_setup = virtio_dev_rx_queue_setup,
+ /* meaningfull only to multiple queue */
+ .rx_queue_release = virtio_dev_rx_queue_release,
+ .tx_queue_setup = virtio_dev_tx_queue_setup,
+ /* meaningfull only to multiple queue */
+ .tx_queue_release = virtio_dev_tx_queue_release,
};
static inline int
@@ -573,6 +580,7 @@ eth_virtio_dev_init(__rte_unused struct eth_driver *eth_drv,
/* Tell the host we've known how to drive the device. */
vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
virtio_negotiate_features(hw);
+
/* Setting up rx_header size for the device */
if(vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
@@ -587,6 +595,7 @@ eth_virtio_dev_init(__rte_unused struct eth_driver *eth_drv,
ETHER_ADDR_LEN);
return (-ENOMEM);
}
+
/* Copy the permanent MAC address to: virtio_hw */
virtio_get_hwaddr(hw);
ether_addr_copy((struct ether_addr *) hw->mac_addr,
@@ -600,7 +609,7 @@ eth_virtio_dev_init(__rte_unused struct eth_driver *eth_drv,
PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
eth_dev->data->port_id, pci_dev->id.vendor_id,
pci_dev->id.device_id);
- return (0);
+ return 0;
}
static struct eth_driver rte_virtio_pmd = {
@@ -669,7 +678,6 @@ virtio_dev_start(struct rte_eth_dev *dev)
/* Check VIRTIO_NET_F_STATUS for link status*/
if(vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
-
vtpci_read_dev_config(hw,
offsetof(struct virtio_net_config, status),
&status, sizeof(status));
diff --git a/lib/librte_pmd_virtio/virtio_ethdev.h b/lib/librte_pmd_virtio/virtio_ethdev.h
index 80c9d63..3dc2c10 100644
--- a/lib/librte_pmd_virtio/virtio_ethdev.h
+++ b/lib/librte_pmd_virtio/virtio_ethdev.h
@@ -57,21 +57,21 @@
/* Features desired/implemented by this driver. */
#define VTNET_FEATURES \
- (VIRTIO_NET_F_MAC | \
- VIRTIO_NET_F_STATUS | \
- VIRTIO_NET_F_CTRL_VQ | \
- VIRTIO_NET_F_CTRL_RX | \
- VIRTIO_NET_F_CTRL_VLAN | \
- VIRTIO_NET_F_CSUM | \
- VIRTIO_NET_F_HOST_TSO4 | \
- VIRTIO_NET_F_HOST_TSO6 | \
- VIRTIO_NET_F_HOST_ECN | \
- VIRTIO_NET_F_GUEST_CSUM | \
- VIRTIO_NET_F_GUEST_TSO4 | \
- VIRTIO_NET_F_GUEST_TSO6 | \
- VIRTIO_NET_F_GUEST_ECN | \
- VIRTIO_NET_F_MRG_RXBUF | \
- VIRTIO_RING_F_INDIRECT_DESC)
+ (VIRTIO_NET_F_MAC | \
+ VIRTIO_NET_F_STATUS | \
+ VIRTIO_NET_F_CTRL_VQ | \
+ VIRTIO_NET_F_CTRL_RX | \
+ VIRTIO_NET_F_CTRL_VLAN | \
+ VIRTIO_NET_F_CSUM | \
+ VIRTIO_NET_F_HOST_TSO4 | \
+ VIRTIO_NET_F_HOST_TSO6 | \
+ VIRTIO_NET_F_HOST_ECN | \
+ VIRTIO_NET_F_GUEST_CSUM | \
+ VIRTIO_NET_F_GUEST_TSO4 | \
+ VIRTIO_NET_F_GUEST_TSO6 | \
+ VIRTIO_NET_F_GUEST_ECN | \
+ VIRTIO_NET_F_MRG_RXBUF | \
+ VIRTIO_RING_F_INDIRECT_DESC)
/*
* RX/TX function prototypes
diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c b/lib/librte_pmd_virtio/virtio_rxtx.c
index 2dd2102..c1dc283 100644
--- a/lib/librte_pmd_virtio/virtio_rxtx.c
+++ b/lib/librte_pmd_virtio/virtio_rxtx.c
@@ -82,14 +82,14 @@ virtio_dev_vring_start(struct rte_eth_dev *dev, struct virtqueue *vq, int queue_
PMD_INIT_FUNC_TRACE();
/*
- * Reinitialise since virtio port might have been stopped and restarted
- */
+ * Reinitialise since virtio port might have been stopped and restarted
+ */
memset(vq->vq_ring_virt_mem, 0, vq->vq_ring_size);
vring_init(vr, size, ring_mem, vq->vq_alignment);
vq->vq_used_cons_idx = 0;
vq->vq_desc_head_idx = 0;
vq->vq_avail_idx = 0;
- vq->vq_desc_tail_idx = vq->vq_nentries - 1;
+ vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
vq->vq_free_cnt = vq->vq_nentries;
memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
@@ -110,25 +110,31 @@ virtio_dev_vring_start(struct rte_eth_dev *dev, struct virtqueue *vq, int queue_
/* Only rx virtqueue needs mbufs to be allocated at initialization */
if (queue_type == VTNET_RQ) {
if (vq->mpool == NULL)
- rte_exit(EXIT_FAILURE, "Cannot allocate initial mbufs for rx virtqueue\n");
- /* Allocate blank mbufs for the each rx descriptor */
+ rte_exit(EXIT_FAILURE,
+ "Cannot allocate initial mbufs for rx virtqueue\n");
+
+ /* Allocate blank mbufs for the each rx descriptor */
nbufs = 0;
error = ENOSPC;
while (!virtqueue_full(vq)) {
m = rte_rxmbuf_alloc(vq->mpool);
if (m == NULL)
break;
+
/******************************************
* Enqueue allocated buffers *
*******************************************/
error = virtqueue_enqueue_recv_refill(vq, m);
+
if (error) {
rte_pktmbuf_free_seg(m);
break;
}
nbufs++;
}
+
vq_update_avail_idx(vq);
+
PMD_INIT_LOG(DEBUG, "Allocated %d bufs\n", nbufs);
VIRTIO_WRITE_REG_2(vq->hw, VIRTIO_PCI_QUEUE_SEL, VTNET_SQ_RQ_QUEUE_IDX);
VIRTIO_WRITE_REG_4(vq->hw, VIRTIO_PCI_QUEUE_PFN,
@@ -180,6 +186,7 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
PMD_INIT_LOG(ERR, "tvq initialization failed\n");
return ret;
}
+
/* Create mempool for rx mbuf allocation */
vq->mpool = mp;
@@ -254,29 +261,40 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
num = (uint16_t)(likely(num <= VIRTIO_MBUF_BURST_SZ) ? num : VIRTIO_MBUF_BURST_SZ);
if (likely(num > DESC_PER_CACHELINE))
num = num - ((rxvq->vq_used_cons_idx + num) % DESC_PER_CACHELINE);
+
if(num == 0) return 0;
+
num = virtqueue_dequeue_burst_rx(rxvq, rcv_pkts, len, num);
PMD_RX_LOG(DEBUG, "used:%d dequeue:%d\n", nb_used, num);
for (i = 0; i < num ; i ++) {
rxm = rcv_pkts[i];
+
PMD_RX_LOG(DEBUG, "packet len:%d\n", len[i]);
- if (unlikely(len[i] < (uint32_t)hw->vtnet_hdr_size + ETHER_HDR_LEN)) {
+
+ if (unlikely(len[i]
+ < (uint32_t)hw->vtnet_hdr_size + ETHER_HDR_LEN)) {
PMD_RX_LOG(ERR, "Packet drop\n");
nb_enqueued++;
virtio_discard_rxbuf(rxvq, rxm);
hw->eth_stats.ierrors++;
continue;
}
+
rxm->pkt.in_port = rxvq->port_id;
rxm->pkt.data = (char *)rxm->buf_addr + RTE_PKTMBUF_HEADROOM;
rxm->pkt.nb_segs = 1;
rxm->pkt.next = NULL;
- rxm->pkt.pkt_len = (uint32_t)(len[i] - sizeof(struct virtio_net_hdr));
- rxm->pkt.data_len = (uint16_t)(len[i] - sizeof(struct virtio_net_hdr));
+ rxm->pkt.pkt_len = (uint32_t)(len[i]
+ - sizeof(struct virtio_net_hdr));
+ rxm->pkt.data_len = (uint16_t)(len[i]
+ - sizeof(struct virtio_net_hdr));
+
VIRTIO_DUMP_PACKET(rxm, rxm->pkt.data_len);
+
rx_pkts[nb_rx++] = rxm;
hw->eth_stats.ibytes += len[i] - sizeof(struct virtio_net_hdr);
}
+
hw->eth_stats.ipackets += nb_rx;
/* Allocate new mbuf for the used descriptor */
@@ -294,14 +312,15 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
}
nb_enqueued ++;
}
- if(likely(nb_enqueued)) {
- if(unlikely(virtqueue_kick_prepare(rxvq))) {
+ if (likely(nb_enqueued)) {
+ if (unlikely(virtqueue_kick_prepare(rxvq))) {
virtqueue_notify(rxvq);
PMD_RX_LOG(DEBUG, "Notified\n");
}
}
+
vq_update_avail_idx(rxvq);
-
+
return (nb_rx);
}
@@ -332,6 +351,7 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
virtqueue_dequeue_pkt_tx(txvq);
num--;
}
+
if(!virtqueue_full(txvq)) {
txm = tx_pkts[nb_tx];
/* Enqueue Packet buffers */
@@ -360,5 +380,6 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
virtqueue_notify(txvq);
PMD_TX_LOG(DEBUG, "Notified backend after xmit\n");
}
+
return (nb_tx);
}
diff --git a/lib/librte_pmd_virtio/virtqueue.h b/lib/librte_pmd_virtio/virtqueue.h
index b67c223..9533953 100644
--- a/lib/librte_pmd_virtio/virtqueue.h
+++ b/lib/librte_pmd_virtio/virtqueue.h
@@ -242,7 +242,7 @@ vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx)
vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt + dxp->ndescs);
if ((dp->flags & VRING_DESC_F_INDIRECT) == 0) {
while (dp->flags & VRING_DESC_F_NEXT) {
- desc_idx_last = dp->next;
+ desc_idx_last = dp->next;
dp = &vq->vq_ring.desc[dp->next];
}
}
@@ -259,6 +259,7 @@ vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx)
dp_tail = &vq->vq_ring.desc[vq->vq_desc_tail_idx];
dp_tail->next = desc_idx;
}
+
vq->vq_desc_tail_idx = desc_idx_last;
dp->next = VQ_RING_DESC_CHAIN_END;
}
@@ -294,7 +295,7 @@ virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf *cookie)
idx = start_dp[idx].next;
vq->vq_desc_head_idx = idx;
if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
- vq->vq_desc_tail_idx = idx;
+ vq->vq_desc_tail_idx = idx;
vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed);
vq_update_avail_ring(vq, head_idx);
@@ -335,7 +336,7 @@ virtqueue_enqueue_xmit(struct virtqueue *txvq, struct rte_mbuf *cookie)
idx = start_dp[idx].next;
txvq->vq_desc_head_idx = idx;
if (txvq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
- txvq->vq_desc_tail_idx = idx;
+ txvq->vq_desc_tail_idx = idx;
txvq->vq_free_cnt = (uint16_t)(txvq->vq_free_cnt - needed);
vq_update_avail_ring(txvq, head_idx);
@@ -357,11 +358,13 @@ virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts, uint
desc_idx = (uint16_t) uep->id;
len[i] = uep->len;
cookie = (struct rte_mbuf *)vq->vq_descx[desc_idx].cookie;
+
if (unlikely(cookie == NULL)) {
PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u\n",
vq->vq_used_cons_idx);
break;
}
+
rte_prefetch0(cookie);
rte_packet_prefetch(cookie->pkt.data);
rx_pkts[i] = cookie;
@@ -369,22 +372,23 @@ virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts, uint
vq_ring_free_chain(vq, desc_idx);
vq->vq_descx[desc_idx].cookie = NULL;
}
+
return (i);
}
static inline uint16_t __attribute__((always_inline))
virtqueue_dequeue_pkt_tx(struct virtqueue *vq)
{
- struct vring_used_elem *uep;
- uint16_t used_idx, desc_idx;
+ struct vring_used_elem *uep;
+ uint16_t used_idx, desc_idx;
- used_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
- uep = &vq->vq_ring.used->ring[used_idx];
- desc_idx = (uint16_t) uep->id;
- vq->vq_used_cons_idx++;
- vq_ring_free_chain(vq, desc_idx);
+ used_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
+ uep = &vq->vq_ring.used->ring[used_idx];
+ desc_idx = (uint16_t) uep->id;
+ vq->vq_used_cons_idx++;
+ vq_ring_free_chain(vq, desc_idx);
- return 0;
+ return 0;
}
#ifdef RTE_LIBRTE_VIRTIO_DEBUG_DUMP
--
1.9.0
next prev parent reply other threads:[~2014-05-29 7:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-29 7:18 [dpdk-dev] [PATCH v4 0/2] Support multiple queues feature in DPDK based virtio-net frontend Ouyang Changchun
2014-05-29 7:18 ` Ouyang Changchun [this message]
2014-05-29 7:18 ` [dpdk-dev] [PATCH v4 2/2] virtio: " Ouyang Changchun
2014-05-29 9:23 ` [dpdk-dev] [PATCH v4 0/2] " Thomas Monjalon
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