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-rw-r--r--dpdk/dpdk-2.2.0_patches/0014-vmxnet3-support-jumbo-frames.patch171
-rw-r--r--vnet/vnet/devices/dpdk/init.c17
2 files changed, 171 insertions, 17 deletions
diff --git a/dpdk/dpdk-2.2.0_patches/0014-vmxnet3-support-jumbo-frames.patch b/dpdk/dpdk-2.2.0_patches/0014-vmxnet3-support-jumbo-frames.patch
new file mode 100644
index 00000000000..ed7b3165391
--- /dev/null
+++ b/dpdk/dpdk-2.2.0_patches/0014-vmxnet3-support-jumbo-frames.patch
@@ -0,0 +1,171 @@
+From f582f39372766a24d9bdbdc3a2a3334de88a70f1 Mon Sep 17 00:00:00 2001
+From: Steve Shin <jonshin@cisco.com>
+Date: Wed, 23 Mar 2016 09:54:54 -0700
+Subject: [PATCH] vmxnet3: support jumbo frames
+
+---
+ drivers/net/vmxnet3/vmxnet3_ethdev.c | 3 +-
+ drivers/net/vmxnet3/vmxnet3_ring.h | 2 +
+ drivers/net/vmxnet3/vmxnet3_rxtx.c | 77 ++++++++++++++++++++++--------------
+ 3 files changed, 52 insertions(+), 30 deletions(-)
+
+diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
+index c363bf6..b78acd4 100644
+--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
++++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
+@@ -425,6 +425,7 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
+ {
+ struct rte_eth_conf port_conf = dev->data->dev_conf;
+ struct vmxnet3_hw *hw = dev->data->dev_private;
++ uint32_t mtu = dev->data->mtu;
+ Vmxnet3_DriverShared *shared = hw->shared;
+ Vmxnet3_DSDevRead *devRead = &shared->devRead;
+ uint32_t *mac_ptr;
+@@ -442,7 +443,7 @@ 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.mtu = rte_le_to_cpu_32(mtu);
+ devRead->misc.queueDescPA = hw->queueDescPA;
+ devRead->misc.queueDescLen = hw->queue_desc_len;
+ devRead->misc.numTxQueues = hw->num_tx_queues;
+diff --git a/drivers/net/vmxnet3/vmxnet3_ring.h b/drivers/net/vmxnet3/vmxnet3_ring.h
+index 612487e..b1582f8 100644
+--- a/drivers/net/vmxnet3/vmxnet3_ring.h
++++ b/drivers/net/vmxnet3/vmxnet3_ring.h
+@@ -171,6 +171,8 @@ typedef struct vmxnet3_rx_queue {
+ uint32_t qid1;
+ uint32_t qid2;
+ Vmxnet3_RxQueueDesc *shared;
++ struct rte_mbuf *start_seg;
++ struct rte_mbuf *last_seg;
+ struct vmxnet3_rxq_stats stats;
+ bool stopped;
+ uint16_t queue_id; /**< Device RX queue index. */
+diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
+index 4de5d89..9f68ec6 100644
+--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
++++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
+@@ -547,7 +547,6 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+ vmxnet3_rx_queue_t *rxq;
+ Vmxnet3_RxCompDesc *rcd;
+ vmxnet3_buf_info_t *rbi;
+- Vmxnet3_RxDesc *rxd;
+ struct rte_mbuf *rxm = NULL;
+ struct vmxnet3_hw *hw;
+
+@@ -572,37 +571,16 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+
+ idx = rcd->rxdIdx;
+ ring_idx = (uint8_t)((rcd->rqID == rxq->qid1) ? 0 : 1);
+- rxd = (Vmxnet3_RxDesc *)rxq->cmd_ring[ring_idx].base + idx;
+ rbi = rxq->cmd_ring[ring_idx].buf_info + idx;
+
+- if (unlikely(rcd->sop != 1 || rcd->eop != 1)) {
+- rte_pktmbuf_free_seg(rbi->m);
+- PMD_RX_LOG(DEBUG, "Packet spread across multiple buffers\n)");
+- goto rcd_done;
+- }
+-
+ PMD_RX_LOG(DEBUG, "rxd idx: %d ring idx: %d.", idx, ring_idx);
+
++ #ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
++ Vmxnet3_RxDesc *rxd
++ = (Vmxnet3_RxDesc *)rxq->cmd_ring[ring_idx].base + idx;
+ VMXNET3_ASSERT(rcd->len <= rxd->len);
+ VMXNET3_ASSERT(rbi->m);
+-
+- if (unlikely(rcd->len == 0)) {
+- PMD_RX_LOG(DEBUG, "Rx buf was skipped. rxring[%d][%d]\n)",
+- ring_idx, idx);
+- VMXNET3_ASSERT(rcd->sop && rcd->eop);
+- rte_pktmbuf_free_seg(rbi->m);
+- goto rcd_done;
+- }
+-
+- /* Assuming a packet is coming in a single packet buffer */
+- if (unlikely(rxd->btype != VMXNET3_RXD_BTYPE_HEAD)) {
+- PMD_RX_LOG(DEBUG,
+- "Alert : Misbehaving device, incorrect "
+- " buffer type used. iPacket dropped.");
+- rte_pktmbuf_free_seg(rbi->m);
+- goto rcd_done;
+- }
+- VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD);
++ #endif
+
+ /* Get the packet buffer pointer from buf_info */
+ rxm = rbi->m;
+@@ -615,7 +593,7 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+ rxq->cmd_ring[ring_idx].next2comp = idx;
+
+ /* For RCD with EOP set, check if there is frame error */
+- if (unlikely(rcd->err)) {
++ if (unlikely(rcd->eop && rcd->err)) {
+ rxq->stats.drop_total++;
+ rxq->stats.drop_err++;
+
+@@ -641,9 +619,49 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+ rxm->ol_flags = 0;
+ rxm->vlan_tci = 0;
+
+- vmxnet3_rx_offload(rcd, rxm);
++ /*
++ * If this is the first buffer of the received packet,
++ * set the pointer to the first mbuf of the packet
++ * Otherwise, update the total length and the number of segments
++ * of the current scattered packet, and update the pointer to
++ * the last mbuf of the current packet.
++ */
++ if (rcd->sop) {
++#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
++ VMXNET3_ASSERT(!rxq->start_seg);
++ VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD);
++#endif
++
++ if (unlikely(rcd->len == 0)) {
++ PMD_RX_LOG(DEBUG,
++ "Rx buf was skipped. rxring[%d][%d])",
++ ring_idx, idx);
++ rte_pktmbuf_free_seg(rbi->m);
++ goto rcd_done;
++ }
++
++ rxq->start_seg = rxm;
++ vmxnet3_rx_offload(rcd, rxm);
++ } else {
++ struct rte_mbuf *start = rxq->start_seg;
++
++#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
++ VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_BODY);
++ VMXNET3_ASSERT(start != NULL);
++#endif
++
++ start->pkt_len += rxm->data_len;
++ start->nb_segs++;
++
++ rxq->last_seg->next = rxm;
++ }
++ rxq->last_seg = rxm;
++
++ if (rcd->eop) {
++ rx_pkts[nb_rx++] = rxq->start_seg;
++ rxq->start_seg = NULL;
++ }
+
+- rx_pkts[nb_rx++] = rxm;
+ rcd_done:
+ rxq->cmd_ring[ring_idx].next2comp = idx;
+ VMXNET3_INC_RING_IDX_ONLY(rxq->cmd_ring[ring_idx].next2comp, rxq->cmd_ring[ring_idx].size);
+@@ -944,6 +962,7 @@ vmxnet3_dev_rxtx_init(struct rte_eth_dev *dev)
+ }
+ }
+ rxq->stopped = FALSE;
++ rxq->start_seg = NULL;
+ }
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+--
+1.9.1
+
diff --git a/vnet/vnet/devices/dpdk/init.c b/vnet/vnet/devices/dpdk/init.c
index eed54098410..8fe95ae5f09 100644
--- a/vnet/vnet/devices/dpdk/init.c
+++ b/vnet/vnet/devices/dpdk/init.c
@@ -158,23 +158,6 @@ static u32 dpdk_flag_change (vnet_main_t * vnm,
{
int rv;
- /*
- * DAW-FIXME: The DPDK VMXNET3 driver does not currently support
- * multi-buffer packets. Max out at 1518 bytes for now.
- *
- * If/when the driver gets fixed, then this should be
- * removed.
- */
- if ((xd->pmd == VNET_DPDK_PMD_VMXNET3) &&
- (hi->max_packet_bytes > 1518))
- {
- hi->max_packet_bytes = 1518;
-
- vlib_cli_output (vlib_get_main(),
- "VMXNET3 driver does not support jumbo frames "
- "yet -- setting mtu to 1518!");
- }
-
xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
if (xd->admin_up)