[PATCH net-next 08/11] ibmvnic: Check adapter state during ibmvnic_poll
From: Nathan Fontenot <hidden>
Date: 2017-05-26 14:42:39
Subsystem:
ibm power sriov virtual nic device driver, linux for powerpc (32-bit and 64-bit), networking drivers, the rest · Maintainers:
Haren Myneni, Rick Lindsley, Madhavan Srinivasan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
We do not want to process any receive frames if the ibmvnic_poll routine is invoked while a reset is in process. Also, before replenishing the rx pools in the ibmvnic_poll, we want to make sure the adapter is not in the process of closing. Signed-off-by: Nathan Fontenot <redacted> --- drivers/net/ethernet/ibm/ibmvnic.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 47421e4..760352f 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c@@ -1435,6 +1435,10 @@ static int ibmvnic_poll(struct napi_struct *napi, int budget) struct ibmvnic_adapter *adapter = netdev_priv(netdev); int scrq_num = (int)(napi - adapter->napi); int frames_processed = 0; + + if (adapter->resetting) + return 0; + restart_poll: while (frames_processed < budget) { struct sk_buff *skb;
@@ -1493,7 +1497,9 @@ static int ibmvnic_poll(struct napi_struct *napi, int budget) netdev->stats.rx_bytes += length; frames_processed++; } - replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); + + if (adapter->state != VNIC_CLOSING) + replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); if (frames_processed < budget) { enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);