From: nickcooper-zhangtonghao <nic@opencloud.tech>
To: dev@dpdk.org
Cc: nickcooper-zhangtonghao <nic@opencloud.tech>
Subject: [dpdk-dev] [PATCH 3/5] vmxnet3: Avoid segfault caused by vmxnet3_dev_rx_queue_setup.
Date: Thu, 5 Jan 2017 02:43:01 -0800 [thread overview]
Message-ID: <1483612983-3545-3-git-send-email-nic@opencloud.tech> (raw)
In-Reply-To: <1483612983-3545-1-git-send-email-nic@opencloud.tech>
We should allocate RX ring for max possible mumber of hardware
descriptors. If we config RX queue with 2048 RX queue size,
and 4096 soon, there will be segment fault when calling other
ethernet API (e.g. rte_eth_dev_start).
Signed-off-by: nickcooper-zhangtonghao <nic@opencloud.tech>
---
drivers/net/vmxnet3/vmxnet3_rxtx.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index e83ac05..9822fa0 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -977,8 +977,11 @@
comp_ring->next2proc = 0;
comp_ring->gen = VMXNET3_INIT_GEN;
- size = sizeof(struct Vmxnet3_RxDesc) * (ring0->size + ring1->size);
- size += sizeof(struct Vmxnet3_RxCompDesc) * comp_ring->size;
+ /* Allocate RX ring for max possible mumber of hardware descriptors. */
+ size = sizeof(struct Vmxnet3_RxDesc) *
+ (VMXNET3_RX_RING_MAX_SIZE * VMXNET3_RX_CMDRING_SIZE);
+ size += sizeof(struct Vmxnet3_RxCompDesc) *
+ (VMXNET3_RX_RING_MAX_SIZE * VMXNET3_RX_CMDRING_SIZE);
mz = ring_dma_zone_reserve(dev, "rxdesc", queue_idx, size, socket_id);
if (mz == NULL) {
--
1.8.3.1
next prev parent reply other threads:[~2017-01-05 10:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-05 10:42 [dpdk-dev] [PATCH 1/5] NUMA: Set numa node value for system which not support NUMA nickcooper-zhangtonghao
2017-01-05 10:43 ` [dpdk-dev] [PATCH 2/5] vmxnet3: Avoid memory leak in vmxnet3_dev_rx_queue_setup nickcooper-zhangtonghao
2017-01-05 10:43 ` nickcooper-zhangtonghao [this message]
2017-01-05 10:43 ` [dpdk-dev] [PATCH 4/5] vmxnet3: Avoid memory leak in vmxnet3_dev_tx_queue_setup nickcooper-zhangtonghao
2017-01-05 10:43 ` [dpdk-dev] [PATCH 5/5] vmxnet3: Avoid segfault caused by vmxnet3_dev_tx_queue_setup nickcooper-zhangtonghao
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