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authorAjit Khaparde <ajitk@serverengines.com>2010-07-29 06:18:58 (GMT)
committerDavid S. Miller <davem@davemloft.net>2010-07-31 06:59:06 (GMT)
commit0fc48c37ff3969dde71a43fa7c8f176d4bd90a3e (patch)
tree5d2d400a09be92fde256ba2501fcd5ea426d0179 /drivers/net/benet
parent48e9989e033966fd738d062ea9730fe10085fdd1 (diff)
downloadlinux-0fc48c37ff3969dde71a43fa7c8f176d4bd90a3e.tar.xz
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: Somnath K <somnathk@serverengines.com> Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/benet')
-rw-r--r--drivers/net/benet/be.h1
-rw-r--r--drivers/net/benet/be_cmds.c2
-rw-r--r--drivers/net/benet/be_main.c3
3 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
index 5e6f581..99197bd 100644
--- a/drivers/net/benet/be.h
+++ b/drivers/net/benet/be.h
@@ -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;
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index 7fd860d..3d30549 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -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);
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index e4a8ae3..74e146f 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1801,7 +1801,8 @@ static void be_worker(struct work_struct *work)
struct be_adapter *adapter =
container_of(work, struct be_adapter, work.work);
- be_cmd_get_stats(adapter, &adapter->stats.cmd);
+ if (!adapter->stats_ioctl_sent)
+ be_cmd_get_stats(adapter, &adapter->stats.cmd);
/* Set EQ delay */
be_rx_eqd_update(adapter);