Commit 0fc48c37 authored by Ajit Khaparde's avatar Ajit Khaparde Committed by David S. Miller
Browse files

be2net: fix to avoid sending get_stats request if one is already being processed. 



GET_STATS request uses the same memory region as the response.
If a new request for get stats is fired before the response for
the previous get_stats request is received, the response will
corrupt the new request, causing the f/w to misbehave.

Signed-off-by: default avatarSomnath K <somnathk@serverengines.com>
Signed-off-by: default avatarAjit Khaparde <ajitk@serverengines.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 48e9989e

drivers/net/benet/be.h

+1 −0
Original line number Diff line number Diff line
@@ -289,6 +289,7 @@ struct be_adapter { 
	u32 rx_fc;		/* Rx flow control */

	u32 tx_fc;		/* Tx flow control */

	bool ue_detected;

	bool stats_ioctl_sent;

	int link_speed;

	u8 port_type;

	u8 transceiver;

drivers/net/benet/be_cmds.c

+2 −0
Original line number Diff line number Diff line
@@ -75,6 +75,7 @@ static int be_mcc_compl_process(struct be_adapter *adapter, 
			be_dws_le_to_cpu(&resp->hw_stats,

						sizeof(resp->hw_stats));

			netdev_stats_update(adapter);

			adapter->stats_ioctl_sent = false;

		}

	} else if ((compl_status != MCC_STATUS_NOT_SUPPORTED) &&

		   (compl->tag0 != OPCODE_COMMON_NTWK_MAC_QUERY)) {
@@ -951,6 +952,7 @@ int be_cmd_get_stats(struct be_adapter *adapter, struct be_dma_mem *nonemb_cmd) 
	sge->len = cpu_to_le32(nonemb_cmd->size);



	be_mcc_notify(adapter);

	adapter->stats_ioctl_sent = true;



err:

	spin_unlock_bh(&adapter->mcc_lock);

drivers/net/benet/be_main.c

+2 −1
Original line number Diff line number Diff line
@@ -1801,6 +1801,7 @@ static void be_worker(struct work_struct *work) 
	struct be_adapter *adapter =

		container_of(work, struct be_adapter, work.work);



	if (!adapter->stats_ioctl_sent)

		be_cmd_get_stats(adapter, &adapter->stats.cmd);



	/* Set EQ delay */

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