1 files changed, 27 insertions, 15 deletions

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 57ff5b3bcce6..46167c081727 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -57,8 +57,8 @@
 #include "bnx2x_init_ops.h"
 #include "bnx2x_dump.h"
 
-#define DRV_MODULE_VERSION      "1.52.53-1"
-#define DRV_MODULE_RELDATE      "2010/18/04"
+#define DRV_MODULE_VERSION      "1.52.53-2"
+#define DRV_MODULE_RELDATE      "2010/21/07"
 #define BNX2X_BC_VER            0x040200
 
 #include <linux/firmware.h>
@@ -3789,6 +3789,8 @@ static void bnx2x_storm_stats_post(struct bnx2x *bp)
                 struct eth_query_ramrod_data ramrod_data = {0};
                 int i, rc;
 
+                spin_lock_bh(&bp->stats_lock);
+
                 ramrod_data.drv_counter = bp->stats_counter++;
                 ramrod_data.collect_port = bp->port.pmf ? 1 : 0;
                 for_each_queue(bp, i)
@@ -3802,6 +3804,8 @@ static void bnx2x_storm_stats_post(struct bnx2x *bp)
                         bp->spq_left++;
                         bp->stats_pending = 1;
                 }
+
+                spin_unlock_bh(&bp->stats_lock);
         }
 }
 
@@ -4367,6 +4371,14 @@ static int bnx2x_storm_stats_update(struct bnx2x *bp)
         struct host_func_stats *fstats = bnx2x_sp(bp, func_stats);
         struct bnx2x_eth_stats *estats = &bp->eth_stats;
         int i;
+        u16 cur_stats_counter;
+
+        /* Make sure we use the value of the counter
+         * used for sending the last stats ramrod.
+         */
+        spin_lock_bh(&bp->stats_lock);
+        cur_stats_counter = bp->stats_counter - 1;
+        spin_unlock_bh(&bp->stats_lock);
 
         memcpy(&(fstats->total_bytes_received_hi),
                &(bnx2x_sp(bp, func_stats_base)->total_bytes_received_hi),
@@ -4394,25 +4406,22 @@ static int bnx2x_storm_stats_update(struct bnx2x *bp)
                 u32 diff;
 
                 /* are storm stats valid? */
-                if ((u16)(le16_to_cpu(xclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(xclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by xstorm"
                            "  xstorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, xclient->stats_counter, bp->stats_counter);
+                           i, xclient->stats_counter, cur_stats_counter + 1);
                         return -1;
                 }
-                if ((u16)(le16_to_cpu(tclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(tclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by tstorm"
                            "  tstorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, tclient->stats_counter, bp->stats_counter);
+                           i, tclient->stats_counter, cur_stats_counter + 1);
                         return -2;
                 }
-                if ((u16)(le16_to_cpu(uclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(uclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by ustorm"
                            "  ustorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, uclient->stats_counter, bp->stats_counter);
+                           i, uclient->stats_counter, cur_stats_counter + 1);
                         return -4;
                 }
 
@@ -4849,16 +4858,18 @@ static const struct {
 
 static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event)
 {
-        enum bnx2x_stats_state state = bp->stats_state;
+        enum bnx2x_stats_state state;
 
         if (unlikely(bp->panic))
                 return;
 
-        bnx2x_stats_stm[state][event].action(bp);
+        /* Protect a state change flow */
+        spin_lock_bh(&bp->stats_lock);
+        state = bp->stats_state;
         bp->stats_state = bnx2x_stats_stm[state][event].next_state;
+        spin_unlock_bh(&bp->stats_lock);
 
-        /* Make sure the state has been "changed" */
-        smp_wmb();
+        bnx2x_stats_stm[state][event].action(bp);
 
         if ((event != STATS_EVENT_UPDATE) || netif_msg_timer(bp))
                 DP(BNX2X_MSG_STATS, "state %d -> event %d -> state %d\n",
@@ -9908,6 +9919,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp)
 
         mutex_init(&bp->port.phy_mutex);
         mutex_init(&bp->fw_mb_mutex);
+        spin_lock_init(&bp->stats_lock);
 #ifdef BCM_CNIC
         mutex_init(&bp->cnic_mutex);
 #endif