be2net: Making die temperature ioctl call async

Also changing it's frequency to once every 64s instead of existing 32s as
it was shown to affect performance

Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index 894f1a9..644e8fe 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -137,6 +137,11 @@ static inline void *queue_tail_node(struct be_queue_info *q)
        return q->dma_mem.va + q->tail * q->entry_size;
 }
 
+static inline void *queue_index_node(struct be_queue_info *q, u16 index)
+{
+       return q->dma_mem.va + index * q->entry_size;
+}
+
 static inline void queue_head_inc(struct be_queue_info *q)
 {
        index_inc(&q->head, q->len);

diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
index 1ac031e..6e7b521 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.c
@@ -19,7 +19,12 @@
 #include "be_cmds.h"
 
 /* Must be a power of 2 or else MODULO will BUG_ON */
-static int be_get_temp_freq = 32;
+static int be_get_temp_freq = 64;
+
+static inline void *embedded_payload(struct be_mcc_wrb *wrb)
+{
+       return wrb->payload.embedded_payload;
+}
 
 static void be_mcc_notify(struct be_adapter *adapter)
 {
@@ -85,7 +90,20 @@ static int be_mcc_compl_process(struct be_adapter *adapter,
                        be_parse_stats(adapter);
                        adapter->stats_cmd_sent = false;
                }
+               if (compl->tag0 ==
+                               OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES) {
+                       struct be_mcc_wrb *mcc_wrb =
+                               queue_index_node(&adapter->mcc_obj.q,
+                                               compl->tag1);
+                       struct be_cmd_resp_get_cntl_addnl_attribs *resp =
+                               embedded_payload(mcc_wrb);
+                       adapter->drv_stats.be_on_die_temperature =
+                               resp->on_die_temperature;
+               }
        } else {
+               if (compl->tag0 == OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES)
+                       be_get_temp_freq = 0;
+
                if (compl_status == MCC_STATUS_NOT_SUPPORTED ||
                        compl_status == MCC_STATUS_ILLEGAL_REQUEST)
                        goto done;
@@ -404,10 +422,6 @@ int be_cmd_POST(struct be_adapter *adapter)
        return -1;
 }
 
-static inline void *embedded_payload(struct be_mcc_wrb *wrb)
-{
-       return wrb->payload.embedded_payload;
-}
 
 static inline struct be_sge *nonembedded_sgl(struct be_mcc_wrb *wrb)
 {
@@ -1301,10 +1315,13 @@ int be_cmd_get_die_temperature(struct be_adapter *adapter)
 {
        struct be_mcc_wrb *wrb;
        struct be_cmd_req_get_cntl_addnl_attribs *req;
+       u16 mccq_index;
        int status;
 
        spin_lock_bh(&adapter->mcc_lock);
 
+       mccq_index = adapter->mcc_obj.q.head;
+
        wrb = wrb_from_mccq(adapter);
        if (!wrb) {
                status = -EBUSY;
@@ -1318,16 +1335,9 @@ int be_cmd_get_die_temperature(struct be_adapter *adapter)
        be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
                OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES, sizeof(*req));
 
-       status = be_mcc_notify_wait(adapter);
-       if (!status) {
-               struct be_cmd_resp_get_cntl_addnl_attribs *resp =
-                                               embedded_payload(wrb);
-               adapter->drv_stats.be_on_die_temperature =
-                                               resp->on_die_temperature;
-       }
-       /* If IOCTL fails once, do not bother issuing it again */
-       else
-               be_get_temp_freq = 0;
+       wrb->tag1 = mccq_index;
+
+       be_mcc_notify(adapter);
 
 err:
        spin_unlock_bh(&adapter->mcc_lock);