[dpdk-dev] [PATCH v3 0/8] vmxnet3: driver updates

[dpdk-dev] [PATCH v3 0/8] vmxnet3: driver updates

[stephen]

From: Stephen Hemminger <shemming@brocade.com>

These are update to earlier vmxnet3 driver changes. Mostly rebasing
to current layout. I skipped the jumbo MTU stuff which works for me
but reviewers seem to see problems with.

Stephen Hemminger (8):
  vmxnet3: enable VLAN filtering
  vmxnet3: remove mtu check
  vmxnet3: cleanup txq stats
  vmxnet3: add support for multi-segment transmit
  vmxnet3: fix link state handling
  vmxnet3: support RSS and refactor offload
  vmxnet3: get rid of DEBUG ifdefs
  vmxnet3: remove unnecessary inlining

 drivers/net/vmxnet3/vmxnet3_ethdev.c | 164 ++++++++++++++++----
 drivers/net/vmxnet3/vmxnet3_ethdev.h |  10 +-
 drivers/net/vmxnet3/vmxnet3_ring.h   |  17 +--
 drivers/net/vmxnet3/vmxnet3_rxtx.c   | 280 ++++++++++++++---------------------
 4 files changed, 266 insertions(+), 205 deletions(-)

-- 
2.1.4

[dpdk-dev] [PATCH 1/8] vmxnet3: enable VLAN filtering

[stephen]

From: Stephen Hemminger <stephen@networkplumber.org>

Support the VLAN filter functionality of the VMXNET3 interface.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/vmxnet3/vmxnet3_ethdev.c | 105 ++++++++++++++++++++++++++++++++---
 drivers/net/vmxnet3/vmxnet3_ethdev.h |   3 +-
 drivers/net/vmxnet3/vmxnet3_rxtx.c   |  31 +----------
 3 files changed, 101 insertions(+), 38 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 59e3122..3caa4c0 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -85,6 +85,12 @@ static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
 				struct rte_eth_stats *stats);
 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
 				struct rte_eth_dev_info *dev_info);
+static int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
+				       uint16_t vid, int on);
+static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
+static void vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
+						int mask, int clear);
+
 #if PROCESS_SYS_EVENTS == 1
 static void vmxnet3_process_events(struct vmxnet3_hw *);
 #endif
@@ -111,6 +117,8 @@ static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
 	.link_update          = vmxnet3_dev_link_update,
 	.stats_get            = vmxnet3_dev_stats_get,
 	.dev_infos_get        = vmxnet3_dev_info_get,
+	.vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
+	.vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
 	.rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 	.rx_queue_release     = vmxnet3_dev_rx_queue_release,
 	.tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
@@ -368,7 +376,7 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 	Vmxnet3_DSDevRead *devRead = &shared->devRead;
 	uint32_t *mac_ptr;
 	uint32_t val, i;
-	int ret;
+	int ret, mask;
 
 	shared->magic = VMXNET3_REV1_MAGIC;
 	devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
@@ -439,9 +447,6 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 	if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 		devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 
-	if (dev->data->dev_conf.rxmode.hw_vlan_strip)
-		devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
-
 	if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 		ret = vmxnet3_rss_configure(dev);
 		if (ret != VMXNET3_SUCCESS)
@@ -453,11 +458,14 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 		devRead->rssConfDesc.confPA  = hw->rss_confPA;
 	}
 
-	if (dev->data->dev_conf.rxmode.hw_vlan_filter) {
-		ret = vmxnet3_vlan_configure(dev);
-		if (ret != VMXNET3_SUCCESS)
-			return ret;
-	}
+	mask = 0;
+	if (dev->data->dev_conf.rxmode.hw_vlan_strip)
+		mask |= ETH_VLAN_STRIP_MASK;
+
+	if (dev->data->dev_conf.rxmode.hw_vlan_filter)
+		mask |= ETH_VLAN_FILTER_MASK;
+
+	vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
 
 	PMD_INIT_LOG(DEBUG,
 		     "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
@@ -693,8 +701,13 @@ static void
 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 {
 	struct vmxnet3_hw *hw = dev->data->dev_private;
+	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 
+	memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 }
 
 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
@@ -702,8 +715,12 @@ static void
 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 {
 	struct vmxnet3_hw *hw = dev->data->dev_private;
+	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 
+	memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 }
 
 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
@@ -724,6 +741,76 @@ vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 }
 
+/* Enable/disable filter on vlan */
+static int
+vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
+{
+	struct vmxnet3_hw *hw = dev->data->dev_private;
+	struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
+	uint32_t *vf_table = rxConf->vfTable;
+
+	/* save state for restore */
+	if (on)
+		VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
+	else
+		VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
+
+	/* don't change active filter if in promiscious mode */
+	if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
+		return 0;
+
+	/* set in hardware */
+	if (on)
+		VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
+	else
+		VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+	return 0;
+}
+
+static void
+vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
+				   int mask, int clear)
+{
+	struct vmxnet3_hw *hw = dev->data->dev_private;
+	Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
+	uint32_t *vf_table = devRead->rxFilterConf.vfTable;
+
+	if (mask & ETH_VLAN_STRIP_MASK)
+		devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
+	else
+		devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_FEATURE);
+
+	if (mask & ETH_VLAN_FILTER_MASK) {
+		if (clear) {
+			memset(hw->shadow_vfta, 0,
+			       VMXNET3_VFT_TABLE_SIZE);
+			/* allow untagged pkts */
+			VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
+		}
+		memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
+	} else {
+		/* allow any pkts -- no filtering */
+		if (clear)
+			memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
+		memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
+	}
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+}
+
+static void
+vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+{
+	vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
+}
+
 #if PROCESS_SYS_EVENTS == 1
 static void
 vmxnet3_process_events(struct vmxnet3_hw *hw)
diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.h b/drivers/net/vmxnet3/vmxnet3_ethdev.h
index 09993cf..e97e3ca 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.h
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.h
@@ -121,6 +121,8 @@ struct vmxnet3_hw {
 	VMXNET3_RSSConf		 *rss_conf;
 	uint64_t			 rss_confPA;
 	vmxnet3_mf_table_t   *mf_table;
+	uint32_t	      shadow_vfta[VMXNET3_VFT_SIZE];
+#define VMXNET3_VFT_TABLE_SIZE 	   (VMXNET3_VFT_SIZE * sizeof(uint32_t))
 };
 
 #define VMXNET3_GET_ADDR_LO(reg)   ((uint32_t)(reg))
@@ -173,7 +175,6 @@ int  vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 int vmxnet3_dev_rxtx_init(struct rte_eth_dev *dev);
 
 int vmxnet3_rss_configure(struct rte_eth_dev *dev);
-int vmxnet3_vlan_configure(struct rte_eth_dev *dev);
 
 uint16_t vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		uint16_t nb_pkts);
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index a1eac45..14f6c1d 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -737,9 +737,9 @@ vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev,
 		return -EINVAL;
 	}
 
-	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOOFFLOADS) !=
-	    ETH_TXQ_FLAGS_NOOFFLOADS) {
-		PMD_INIT_LOG(ERR, "TX not support offload function yet");
+	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMS) !=
+	    ETH_TXQ_FLAGS_NOXSUMS) {
+		PMD_INIT_LOG(ERR, "TX no support for checksum offload yet");
 		return -EINVAL;
 	}
 
@@ -1041,28 +1041,3 @@ vmxnet3_rss_configure(struct rte_eth_dev *dev)
 
 	return VMXNET3_SUCCESS;
 }
-
-/*
- * Configure VLAN Filter feature
- */
-int
-vmxnet3_vlan_configure(struct rte_eth_dev *dev)
-{
-	uint8_t i;
-	struct vmxnet3_hw *hw = dev->data->dev_private;
-	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
-
-	PMD_INIT_FUNC_TRACE();
-
-	/* Verify if this tag is already set */
-	for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
-		/* Filter all vlan tags out by default */
-		vf_table[i] = 0;
-		/* To-Do: Provide another routine in dev_ops for user config */
-
-		PMD_INIT_LOG(DEBUG, "Registering VLAN portid: %"PRIu8" tag %u",
-					dev->data->port_id, vf_table[i]);
-	}
-
-	return VMXNET3_SUCCESS;
-}
-- 
2.1.4

[dpdk-dev] [PATCH 2/8] vmxnet3: remove mtu check

[stephen]

From: Stephen Hemminger <stephen@networkplumber.org>

Remove check for packets greater than MTU. No other driver does
this, it should be handled at higher layer

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Yong Wang <yongwang@vmware.com>
---
 drivers/net/vmxnet3/vmxnet3_ethdev.c |  2 --
 drivers/net/vmxnet3/vmxnet3_ethdev.h |  1 -
 drivers/net/vmxnet3/vmxnet3_rxtx.c   | 10 ----------
 3 files changed, 13 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 3caa4c0..3bec173 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -216,7 +216,6 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 
 	hw->num_rx_queues = 1;
 	hw->num_tx_queues = 1;
-	hw->cur_mtu = ETHER_MTU;
 	hw->bufs_per_pkt = 1;
 
 	/* Check h/w version compatibility with driver. */
@@ -391,7 +390,6 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 
 	devRead->misc.queueDescPA  = hw->queueDescPA;
 	devRead->misc.queueDescLen = hw->queue_desc_len;
-	devRead->misc.mtu          = hw->cur_mtu;
 	devRead->misc.numTxQueues  = hw->num_tx_queues;
 	devRead->misc.numRxQueues  = hw->num_rx_queues;
 
diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.h b/drivers/net/vmxnet3/vmxnet3_ethdev.h
index e97e3ca..b392061 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.h
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.h
@@ -107,7 +107,6 @@ struct vmxnet3_hw {
 	uint8_t num_tx_queues;
 	uint8_t num_rx_queues;
 	uint8_t bufs_per_pkt;
-	uint16_t cur_mtu;
 
 	Vmxnet3_TxQueueDesc   *tqd_start;	/* start address of all tx queue desc */
 	Vmxnet3_RxQueueDesc   *rqd_start;	/* start address of all rx queue desc */
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index 14f6c1d..eb5d096 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -368,16 +368,6 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 				continue;
 			}
 
-			/* Needs to minus ether header len */
-			if (txm->data_len > (hw->cur_mtu + ETHER_HDR_LEN)) {
-				PMD_TX_LOG(DEBUG, "Packet data_len higher than MTU");
-				rte_pktmbuf_free(tx_pkts[nb_tx]);
-				txq->stats.drop_total++;
-
-				nb_tx++;
-				continue;
-			}
-
 			txd = (Vmxnet3_TxDesc *)(txq->cmd_ring.base + txq->cmd_ring.next2fill);
 			if (rte_pktmbuf_pkt_len(txm) <= VMXNET3_HDR_COPY_SIZE) {
 				struct Vmxnet3_TxDataDesc *tdd;
-- 
2.1.4

[dpdk-dev] [PATCH 3/8] vmxnet3: cleanup txq stats

[stephen]

From: Stephen Hemminger <stephen@networkplumber.org>

There are several stats here which are never set, and have no way
to be displayed.  Assume in future xstats could be used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/vmxnet3/vmxnet3_ring.h | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ring.h b/drivers/net/vmxnet3/vmxnet3_ring.h
index c5abdb6..ebe6268 100644
--- a/drivers/net/vmxnet3/vmxnet3_ring.h
+++ b/drivers/net/vmxnet3/vmxnet3_ring.h
@@ -121,16 +121,12 @@ vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
 }
 
 struct vmxnet3_txq_stats {
-	uint64_t               drop_total; /* # of pkts dropped by the driver, the
-									   * counters below track droppings due to
-									   * different reasons
-									   */
-	uint64_t               drop_oversized;
-	uint64_t               drop_hdr_inspect_err;
-	uint64_t               drop_tso;
-	uint64_t               deferred;
-	uint64_t               tx_ring_full;
-	uint64_t               linearized;  /* # of pkts linearized */
+	uint64_t	drop_total; /* # of pkts dropped by the driver,
+				     * the counters below track droppings due to
+				     * different reasons
+				     */
+	uint64_t	drop_tso;
+	uint64_t	tx_ring_full;
 };
 
 typedef struct vmxnet3_tx_ctx {
-- 
2.1.4

[dpdk-dev] [PATCH 4/8] vmxnet3: add support for multi-segment transmit

[stephen]

From: Stephen Hemminger <shemming@brocade.com>

Change sending loop to support multi-segment mbufs.
The VMXNET3 api has start-of-packet and end-packet flags, so it
is not hard to send multi-segment mbuf's.

Also, update descriptor in 32 bit value rather than toggling
bitfields which is slower and error prone.
Based on code in earlier driver, and the Linux kernel driver.

Add a compiler barrier to make sure that update of earlier descriptor
are completed prior to update of generation bit on start of packet.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/vmxnet3/vmxnet3_ring.h |   1 +
 drivers/net/vmxnet3/vmxnet3_rxtx.c | 146 ++++++++++++++++---------------------
 2 files changed, 64 insertions(+), 83 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ring.h b/drivers/net/vmxnet3/vmxnet3_ring.h
index ebe6268..612487e 100644
--- a/drivers/net/vmxnet3/vmxnet3_ring.h
+++ b/drivers/net/vmxnet3/vmxnet3_ring.h
@@ -125,6 +125,7 @@ struct vmxnet3_txq_stats {
 				     * the counters below track droppings due to
 				     * different reasons
 				     */
+	uint64_t	drop_too_many_segs;
 	uint64_t	drop_tso;
 	uint64_t	tx_ring_full;
 };
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index eb5d096..1fc6843 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -305,26 +305,23 @@ vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *txq)
 		(comp_ring->base + comp_ring->next2proc);
 
 	while (tcd->gen == comp_ring->gen) {
-
 		/* Release cmd_ring descriptor and free mbuf */
 #ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
 		VMXNET3_ASSERT(txq->cmd_ring.base[tcd->txdIdx].txd.eop == 1);
 #endif
-		mbuf = txq->cmd_ring.buf_info[tcd->txdIdx].m;
-		if (unlikely(mbuf == NULL))
-			rte_panic("EOP desc does not point to a valid mbuf");
-		else
-			rte_pktmbuf_free(mbuf);
-
-
-		txq->cmd_ring.buf_info[tcd->txdIdx].m = NULL;
-		/* Mark the txd for which tcd was generated as completed */
-		vmxnet3_cmd_ring_adv_next2comp(&txq->cmd_ring);
+		while (txq->cmd_ring.next2comp != tcd->txdIdx) {
+			mbuf = txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m;
+			txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m = NULL;
+			rte_pktmbuf_free_seg(mbuf);
+
+			/* Mark the txd for which tcd was generated as completed */
+			vmxnet3_cmd_ring_adv_next2comp(&txq->cmd_ring);
+			completed++;
+		}
 
 		vmxnet3_comp_ring_adv_next2proc(comp_ring);
 		tcd = (struct Vmxnet3_TxCompDesc *)(comp_ring->base +
 						    comp_ring->next2proc);
-		completed++;
 	}
 
 	PMD_TX_LOG(DEBUG, "Processed %d tx comps & command descs.", completed);
@@ -335,13 +332,8 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 		  uint16_t nb_pkts)
 {
 	uint16_t nb_tx;
-	Vmxnet3_TxDesc *txd = NULL;
-	vmxnet3_buf_info_t *tbi = NULL;
-	struct vmxnet3_hw *hw;
-	struct rte_mbuf *txm;
 	vmxnet3_tx_queue_t *txq = tx_queue;
-
-	hw = txq->hw;
+	struct vmxnet3_hw *hw = txq->hw;
 
 	if (unlikely(txq->stopped)) {
 		PMD_TX_LOG(DEBUG, "Tx queue is stopped.");
@@ -353,75 +345,69 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 	nb_tx = 0;
 	while (nb_tx < nb_pkts) {
+		Vmxnet3_GenericDesc *gdesc;
+		vmxnet3_buf_info_t *tbi;
+		uint32_t first2fill, avail, dw2;
+		struct rte_mbuf *txm = tx_pkts[nb_tx];
+		struct rte_mbuf *m_seg = txm;
+
+		/* Is this packet execessively fragmented, then drop */
+		if (unlikely(txm->nb_segs > VMXNET3_MAX_TXD_PER_PKT)) {
+			++txq->stats.drop_too_many_segs;
+			++txq->stats.drop_total;
+			rte_pktmbuf_free(txm);
+			++nb_tx;
+			continue;
+		}
 
-		if (vmxnet3_cmd_ring_desc_avail(&txq->cmd_ring)) {
-			int copy_size = 0;
-
-			txm = tx_pkts[nb_tx];
-			/* Don't support scatter packets yet, free them if met */
-			if (txm->nb_segs != 1) {
-				PMD_TX_LOG(DEBUG, "Don't support scatter packets yet, drop!");
-				rte_pktmbuf_free(tx_pkts[nb_tx]);
-				txq->stats.drop_total++;
-
-				nb_tx++;
-				continue;
-			}
-
-			txd = (Vmxnet3_TxDesc *)(txq->cmd_ring.base + txq->cmd_ring.next2fill);
-			if (rte_pktmbuf_pkt_len(txm) <= VMXNET3_HDR_COPY_SIZE) {
-				struct Vmxnet3_TxDataDesc *tdd;
-
-				tdd = txq->data_ring.base + txq->cmd_ring.next2fill;
-				copy_size = rte_pktmbuf_pkt_len(txm);
-				rte_memcpy(tdd->data, rte_pktmbuf_mtod(txm, char *), copy_size);
-			}
+		/* Is command ring full? */
+		avail = vmxnet3_cmd_ring_desc_avail(&txq->cmd_ring);
+		if (txm->nb_segs > avail) {
+			++txq->stats.tx_ring_full;
+			break;
+		}
 
-			/* Fill the tx descriptor */
+		/* use the previous gen bit for the SOP desc */
+		dw2 = (txq->cmd_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT;
+		first2fill = txq->cmd_ring.next2fill;
+		do {
+			/* Remember the transmit buffer for cleanup */
 			tbi = txq->cmd_ring.buf_info + txq->cmd_ring.next2fill;
-			tbi->bufPA = RTE_MBUF_DATA_DMA_ADDR(txm);
-			if (copy_size)
-				txd->addr = rte_cpu_to_le_64(txq->data_ring.basePA +
-							txq->cmd_ring.next2fill *
-							sizeof(struct Vmxnet3_TxDataDesc));
-			else
-				txd->addr = tbi->bufPA;
-			txd->len = txm->data_len;
+			tbi->m = m_seg;
 
-			/* Mark the last descriptor as End of Packet. */
-			txd->cq = 1;
-			txd->eop = 1;
+			/* NB: the following assumes that VMXNET3 maximum
+			   transmit buffer size (16K) is greater than
+			   maximum sizeof mbuf segment size. */
+			gdesc = txq->cmd_ring.base + txq->cmd_ring.next2fill;
+			gdesc->txd.addr = RTE_MBUF_DATA_DMA_ADDR(m_seg);
+			gdesc->dword[2] = dw2 | m_seg->data_len;
+			gdesc->dword[3] = 0;
 
-			/* Add VLAN tag if requested */
-			if (txm->ol_flags & PKT_TX_VLAN_PKT) {
-				txd->ti = 1;
-				txd->tci = rte_cpu_to_le_16(txm->vlan_tci);
-			}
+			/* move to the next2fill descriptor */
+			vmxnet3_cmd_ring_adv_next2fill(&txq->cmd_ring);
 
-			/* Record current mbuf for freeing it later in tx complete */
-#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
-			VMXNET3_ASSERT(txm);
-#endif
-			tbi->m = txm;
+			/* use the right gen for non-SOP desc */
+			dw2 = txq->cmd_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+		} while ( (m_seg = m_seg->next) != NULL);
 
-			/* Set the offloading mode to default */
-			txd->hlen = 0;
-			txd->om = VMXNET3_OM_NONE;
-			txd->msscof = 0;
+		/* Update the EOP descriptor */
+		gdesc->dword[3] |= VMXNET3_TXD_EOP | VMXNET3_TXD_CQ;
 
-			/* finally flip the GEN bit of the SOP desc  */
-			txd->gen = txq->cmd_ring.gen;
-			txq->shared->ctrl.txNumDeferred++;
+		/* Add VLAN tag if present */
+		gdesc = txq->cmd_ring.base + first2fill;
+		if (txm->ol_flags & PKT_TX_VLAN_PKT) {
+			gdesc->txd.ti = 1;
+			gdesc->txd.tci = txm->vlan_tci;
+		}
 
-			/* move to the next2fill descriptor */
-			vmxnet3_cmd_ring_adv_next2fill(&txq->cmd_ring);
-			nb_tx++;
+		/* TODO: Add transmit checksum offload here */
 
-		} else {
-			PMD_TX_LOG(DEBUG, "No free tx cmd desc(s)");
-			txq->stats.drop_total += (nb_pkts - nb_tx);
-			break;
-		}
+		/* flip the GEN bit on the SOP */
+		rte_compiler_barrier();
+		gdesc->dword[2] ^= VMXNET3_TXD_GEN;
+
+		txq->shared->ctrl.txNumDeferred++;
+		nb_tx++;
 	}
 
 	PMD_TX_LOG(DEBUG, "vmxnet3 txThreshold: %u", txq->shared->ctrl.txThreshold);
@@ -721,12 +707,6 @@ vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev,
 
 	PMD_INIT_FUNC_TRACE();
 
-	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOMULTSEGS) !=
-	    ETH_TXQ_FLAGS_NOMULTSEGS) {
-		PMD_INIT_LOG(ERR, "TX Multi segment not support yet");
-		return -EINVAL;
-	}
-
 	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMS) !=
 	    ETH_TXQ_FLAGS_NOXSUMS) {
 		PMD_INIT_LOG(ERR, "TX no support for checksum offload yet");
-- 
2.1.4

[dpdk-dev] [PATCH 5/8] vmxnet3: fix link state handling

[stephen]

From: Stephen Hemminger <stephen@networkplumber.org>

The Intel version of VMXNET3 driver does not handle link state properly.
The VMXNET3 API returns 1 if connected and 0 if disconnected.
Also need to return correct value to indicate state change.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Yong Wang <yongwang@vmware.com>
---
 drivers/net/vmxnet3/vmxnet3_ethdev.c | 57 ++++++++++++++++++++++++++----------
 1 file changed, 42 insertions(+), 15 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 3bec173..a70be5c 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -155,9 +155,36 @@ gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
  *   - On success, zero.
  *   - On failure, negative value.
  */
-static inline int
-rte_vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
-				struct rte_eth_link *link)
+
+static int
+vmxnet3_dev_atomic_read_link_status(struct rte_eth_dev *dev,
+				    struct rte_eth_link *link)
+{
+	struct rte_eth_link *dst = link;
+	struct rte_eth_link *src = &(dev->data->dev_link);
+
+	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
+				*(uint64_t *)src) == 0)
+		return -1;
+
+	return 0;
+}
+
+/**
+ * Atomically writes the link status information into global
+ * structure rte_eth_dev.
+ *
+ * @param dev
+ *   - Pointer to the structure rte_eth_dev to write to.
+ *   - Pointer to the buffer to be saved with the link status.
+ *
+ * @return
+ *   - On success, zero.
+ *   - On failure, negative value.
+ */
+static int
+vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
+				     struct rte_eth_link *link)
 {
 	struct rte_eth_link *dst = &(dev->data->dev_link);
 	struct rte_eth_link *src = link;
@@ -388,6 +415,7 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 	devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 	devRead->misc.driverInfo.uptVerSpt     = 1;
 
+	devRead->misc.mtu = rte_le_to_cpu_32(dev->data->mtu);
 	devRead->misc.queueDescPA  = hw->queueDescPA;
 	devRead->misc.queueDescLen = hw->queue_desc_len;
 	devRead->misc.numTxQueues  = hw->num_tx_queues;
@@ -573,7 +601,7 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
 
 	/* Clear recorded link status */
 	memset(&link, 0, sizeof(link));
-	rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
+	vmxnet3_dev_atomic_write_link_status(dev, &link);
 }
 
 /*
@@ -656,28 +684,27 @@ static int
 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 {
 	struct vmxnet3_hw *hw = dev->data->dev_private;
-	struct rte_eth_link link;
+	struct rte_eth_link old, link;
 	uint32_t ret;
 
+	if (dev->data->dev_started == 0)
+		return -1; /* Link status doesn't change for stopped dev */
+
+	memset(&link, 0, sizeof(link));
+	vmxnet3_dev_atomic_read_link_status(dev, &old);
+
 	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 	ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 
-	if (!ret) {
-		PMD_INIT_LOG(ERR, "Link Status Negative : %s()", __func__);
-		return -1;
-	}
-
 	if (ret & 0x1) {
 		link.link_status = 1;
 		link.link_duplex = ETH_LINK_FULL_DUPLEX;
 		link.link_speed = ETH_LINK_SPEED_10000;
-
-		rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
-
-		return 0;
 	}
 
-	return -1;
+	vmxnet3_dev_atomic_write_link_status(dev, &link);
+
+	return (old.link_status == link.link_status) ? -1 : 0;
 }
 
 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
-- 
2.1.4

[dpdk-dev] [PATCH 6/8] vmxnet3: support RSS and refactor offload

[stephen]

From: Stephen Hemminger <stephen@networkplumber.org>

Refactor the logic to compute receive offload flags to a simpler
function. And add support for putting RSS flow hash into packet.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Bill Hong <bhong@brocade.com>
---
 drivers/net/vmxnet3/vmxnet3_rxtx.c | 69 ++++++++++++++++++++++----------------
 1 file changed, 40 insertions(+), 29 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index 1fc6843..63d3bab 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -499,6 +499,43 @@ vmxnet3_post_rx_bufs(vmxnet3_rx_queue_t *rxq, uint8_t ring_id)
 		return i;
 }
 
+
+/* Receive side checksum and other offloads */
+static void
+vmxnet3_rx_offload(const Vmxnet3_RxCompDesc *rcd, struct rte_mbuf *rxm)
+{
+	/* Check for hardware stripped VLAN tag */
+	if (rcd->ts) {
+		rxm->ol_flags |= PKT_RX_VLAN_PKT;
+		rxm->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
+	}
+
+	/* Check for RSS */
+	if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE) {
+		rxm->ol_flags |= PKT_RX_RSS_HASH;
+		rxm->hash.rss = rcd->rssHash;
+	}
+
+	/* Check packet type, checksum errors, etc. Only support IPv4 for now. */
+	if (rcd->v4) {
+		struct ether_hdr *eth = rte_pktmbuf_mtod(rxm, struct ether_hdr *);
+		struct ipv4_hdr *ip = (struct ipv4_hdr *)(eth + 1);
+
+		if (((ip->version_ihl & 0xf) << 2) > (int)sizeof(struct ipv4_hdr))
+			rxm->ol_flags |= PKT_RX_IPV4_HDR_EXT;
+		else
+			rxm->ol_flags |= PKT_RX_IPV4_HDR;
+
+		if (!rcd->cnc) {
+			if (!rcd->ipc)
+				rxm->ol_flags |= PKT_RX_IP_CKSUM_BAD;
+
+			if ((rcd->tcp || rcd->udp) && !rcd->tuc)
+				rxm->ol_flags |= PKT_RX_L4_CKSUM_BAD;
+		}
+	}
+}
+
 /*
  * Process the Rx Completion Ring of given vmxnet3_rx_queue
  * for nb_pkts burst and return the number of packets received
@@ -599,17 +636,6 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 			goto rcd_done;
 		}
 
-		/* Check for hardware stripped VLAN tag */
-		if (rcd->ts) {
-			PMD_RX_LOG(DEBUG, "Received packet with vlan ID: %d.",
-				   rcd->tci);
-			rxm->ol_flags = PKT_RX_VLAN_PKT;
-			/* Copy vlan tag in packet buffer */
-			rxm->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
-		} else {
-			rxm->ol_flags = 0;
-			rxm->vlan_tci = 0;
-		}
 
 		/* Initialize newly received packet buffer */
 		rxm->port = rxq->port_id;
@@ -618,25 +644,10 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 		rxm->pkt_len = (uint16_t)rcd->len;
 		rxm->data_len = (uint16_t)rcd->len;
 		rxm->data_off = RTE_PKTMBUF_HEADROOM;
+		rxm->ol_flags = 0;
+		rxm->vlan_tci = 0;
 
-		/* Check packet type, checksum errors, etc. Only support IPv4 for now. */
-		if (rcd->v4) {
-			struct ether_hdr *eth = rte_pktmbuf_mtod(rxm, struct ether_hdr *);
-			struct ipv4_hdr *ip = (struct ipv4_hdr *)(eth + 1);
-
-			if (((ip->version_ihl & 0xf) << 2) > (int)sizeof(struct ipv4_hdr))
-				rxm->ol_flags |= PKT_RX_IPV4_HDR_EXT;
-			else
-				rxm->ol_flags |= PKT_RX_IPV4_HDR;
-
-			if (!rcd->cnc) {
-				if (!rcd->ipc)
-					rxm->ol_flags |= PKT_RX_IP_CKSUM_BAD;
-
-				if ((rcd->tcp || rcd->udp) && !rcd->tuc)
-					rxm->ol_flags |= PKT_RX_L4_CKSUM_BAD;
-			}
-		}
+		vmxnet3_rx_offload(rcd, rxm);
 
 		rx_pkts[nb_rx++] = rxm;
 rcd_done:
-- 
2.1.4

[dpdk-dev] [PATCH 7/8] vmxnet3: get rid of DEBUG ifdefs

[stephen]

From: Stephen Hemminger <shemming@brocade.com>

By defining macro as a stub it is possible to get rid of #ifdef's
in the actual code. Always evaluate the argument (even in the stub)
so that there are no extra unused variable errors.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/vmxnet3/vmxnet3_ethdev.h |  6 ++++--
 drivers/net/vmxnet3/vmxnet3_rxtx.c   | 10 ++--------
 2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.h b/drivers/net/vmxnet3/vmxnet3_ethdev.h
index b392061..b8db6a1 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.h
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.h
@@ -35,9 +35,11 @@
 #define _VMXNET3_ETHDEV_H_
 
 #ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
-#define VMXNET3_ASSERT(x) do { \
-	if (!(x)) rte_panic("VMXNET3: x"); \
+#define VMXNET3_ASSERT(x) do {			   \
+	if (!(x)) rte_panic("VMXNET3: %s\n", #x ); \
 } while(0)
+#else
+#define VMXNET3_ASSERT(x) do { (void)(x); } while(0)
 #endif
 
 #define VMXNET3_MAX_MAC_ADDRS 1
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index 63d3bab..c680346 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -306,9 +306,7 @@ vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *txq)
 
 	while (tcd->gen == comp_ring->gen) {
 		/* Release cmd_ring descriptor and free mbuf */
-#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
 		VMXNET3_ASSERT(txq->cmd_ring.base[tcd->txdIdx].txd.eop == 1);
-#endif
 		while (txq->cmd_ring.next2comp != tcd->txdIdx) {
 			mbuf = txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m;
 			txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m = NULL;
@@ -585,16 +583,13 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 
 		PMD_RX_LOG(DEBUG, "rxd idx: %d ring idx: %d.", idx, ring_idx);
 
-#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
 		VMXNET3_ASSERT(rcd->len <= rxd->len);
 		VMXNET3_ASSERT(rbi->m);
-#endif
+
 		if (unlikely(rcd->len == 0)) {
 			PMD_RX_LOG(DEBUG, "Rx buf was skipped. rxring[%d][%d]\n)",
 				   ring_idx, idx);
-#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
 			VMXNET3_ASSERT(rcd->sop && rcd->eop);
-#endif
 			rte_pktmbuf_free_seg(rbi->m);
 			goto rcd_done;
 		}
@@ -607,9 +602,8 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 			rte_pktmbuf_free_seg(rbi->m);
 			goto rcd_done;
 		}
-#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
 		VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD);
-#endif
+
 		/* Get the packet buffer pointer from buf_info */
 		rxm = rbi->m;
 
-- 
2.1.4

[dpdk-dev] [PATCH 8/8] vmxnet3: remove unnecessary inlining

[stephen]

From: Stephen Hemminger <shemming@brocade.com>

No reason to inline large functions. Compiler will decide already
based on optimization level.

Also register array should be const.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/vmxnet3/vmxnet3_rxtx.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index c680346..e2f4b78 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -83,16 +83,16 @@
 #define RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mb) \
 	(uint64_t) ((mb)->buf_physaddr + RTE_PKTMBUF_HEADROOM)
 
-static uint32_t rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
+static const uint32_t rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
 
-static inline int vmxnet3_post_rx_bufs(vmxnet3_rx_queue_t* , uint8_t);
-static inline void vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *);
+static int vmxnet3_post_rx_bufs(vmxnet3_rx_queue_t* , uint8_t);
+static void vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *);
 #ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER_NOT_USED
 static void vmxnet3_rxq_dump(struct vmxnet3_rx_queue *);
 static void vmxnet3_txq_dump(struct vmxnet3_tx_queue *);
 #endif
 
-static inline struct rte_mbuf *
+static struct rte_mbuf *
 rte_rxmbuf_alloc(struct rte_mempool *mp)
 {
 	struct rte_mbuf *m;
@@ -156,7 +156,7 @@ vmxnet3_txq_dump(struct vmxnet3_tx_queue *txq)
 }
 #endif
 
-static inline void
+static void
 vmxnet3_cmd_ring_release_mbufs(vmxnet3_cmd_ring_t *ring)
 {
 	while (ring->next2comp != ring->next2fill) {
@@ -295,7 +295,7 @@ vmxnet3_dev_clear_queues(struct rte_eth_dev *dev)
 	}
 }
 
-static inline void
+static void
 vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *txq)
 {
 	int completed = 0;
@@ -432,7 +432,7 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
  *      only for LRO.
  *
  */
-static inline int
+static int
 vmxnet3_post_rx_bufs(vmxnet3_rx_queue_t *rxq, uint8_t ring_id)
 {
 	int err = 0;
-- 
2.1.4

Re: [dpdk-dev] [PATCH v3 0/8] vmxnet3: driver updates

[Yong Wang]

On 7/9/15, 11:24 AM, "dev on behalf of stephen@networkplumber.org"
<dev-bounces@dpdk.org on behalf of stephen@networkplumber.org> wrote:

>From: Stephen Hemminger <shemming@brocade.com>
>
>These are update to earlier vmxnet3 driver changes. Mostly rebasing
>to current layout. I skipped the jumbo MTU stuff which works for me
>but reviewers seem to see problems with.
>
>Stephen Hemminger (8):
>  vmxnet3: enable VLAN filtering
>  vmxnet3: remove mtu check
>  vmxnet3: cleanup txq stats
>  vmxnet3: add support for multi-segment transmit
>  vmxnet3: fix link state handling
>  vmxnet3: support RSS and refactor offload
>  vmxnet3: get rid of DEBUG ifdefs
>  vmxnet3: remove unnecessary inlining
>
> drivers/net/vmxnet3/vmxnet3_ethdev.c | 164 ++++++++++++++++----
> drivers/net/vmxnet3/vmxnet3_ethdev.h |  10 +-
> drivers/net/vmxnet3/vmxnet3_ring.h   |  17 +--
> drivers/net/vmxnet3/vmxnet3_rxtx.c   | 280
>++++++++++++++---------------------
> 4 files changed, 266 insertions(+), 205 deletions(-)
>
>-- 
>2.1.4

Assuming this series is a simple rebase of the previous patchset, which I
already acked (I didn’t see the Acked-by updated though in the new
version):

Series Acked-by: Yong Wang <yongwang@vmware.com>

Re: [dpdk-dev] [PATCH v3 0/8] vmxnet3: driver updates

[Thomas Monjalon]

2015-07-09 18:46, Yong Wang:
> On 7/9/15, 11:24 AM, "dev on behalf of stephen@networkplumber.org"
> <dev-bounces@dpdk.org on behalf of stephen@networkplumber.org> wrote:
> >From: Stephen Hemminger <shemming@brocade.com>
> >
> >These are update to earlier vmxnet3 driver changes. Mostly rebasing
> >to current layout. I skipped the jumbo MTU stuff which works for me
> >but reviewers seem to see problems with.

It should be possible to discuss with Yong to understand the problem
and submit a separate patch to get it approved.

> >Stephen Hemminger (8):
> >  vmxnet3: enable VLAN filtering
> >  vmxnet3: remove mtu check
> >  vmxnet3: cleanup txq stats
> >  vmxnet3: add support for multi-segment transmit
> >  vmxnet3: fix link state handling
> >  vmxnet3: support RSS and refactor offload
> >  vmxnet3: get rid of DEBUG ifdefs
> >  vmxnet3: remove unnecessary inlining
> 
> Assuming this series is a simple rebase of the previous patchset, which I
> already acked (I didn’t see the Acked-by updated though in the new
> version):

Yes this series was partially ack'ed and some of them were forgotten in v3.

Stephen, reviewing is not so pleasant and it can be worst when some reviews
seem forgotten. Please try to add acks and maintain a changelog across
different versions of a patchset.

> Series Acked-by: Yong Wang <yongwang@vmware.com>

Applied, thanks for giving quick ack

Re: [dpdk-dev] [PATCH v3 0/8] vmxnet3: driver updates

[Stephen Hemminger]

On Thu, 9 Jul 2015 22:32:29 +0000
Thomas Monjalon <thomas.monjalon@6wind.com> wrote:

> 2015-07-09 18:46, Yong Wang:
> > On 7/9/15, 11:24 AM, "dev on behalf of stephen@networkplumber.org"
> > <dev-bounces@dpdk.org on behalf of stephen@networkplumber.org> wrote:
> > >From: Stephen Hemminger <shemming@brocade.com>
> > >
> > >These are update to earlier vmxnet3 driver changes. Mostly rebasing
> > >to current layout. I skipped the jumbo MTU stuff which works for me
> > >but reviewers seem to see problems with.
> 
> It should be possible to discuss with Yong to understand the problem
> and submit a separate patch to get it approved.
> 
> > >Stephen Hemminger (8):
> > >  vmxnet3: enable VLAN filtering
> > >  vmxnet3: remove mtu check
> > >  vmxnet3: cleanup txq stats
> > >  vmxnet3: add support for multi-segment transmit
> > >  vmxnet3: fix link state handling
> > >  vmxnet3: support RSS and refactor offload
> > >  vmxnet3: get rid of DEBUG ifdefs
> > >  vmxnet3: remove unnecessary inlining
> > 
> > Assuming this series is a simple rebase of the previous patchset, which I
> > already acked (I didn’t see the Acked-by updated though in the new
> > version):
> 
> Yes this series was partially ack'ed and some of them were forgotten in v3.
> 
> Stephen, reviewing is not so pleasant and it can be worst when some reviews
> seem forgotten. Please try to add acks and maintain a changelog across
> different versions of a patchset.
> 
> > Series Acked-by: Yong Wang <yongwang@vmware.com>
> 
> Applied, thanks for giving quick ack

I work in a Getting-Things-Done fashion and am used to 2 day turn around
review time, these cycles are so long that by the time things come back
all context is lost.