diff options
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 18 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 |
2 files changed, 17 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index a19f68f5862d..415694d37989 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -6279,6 +6279,12 @@ static int bnxt_open(struct net_device *dev) return __bnxt_open_nic(bp, true, true); } +static bool bnxt_drv_busy(struct bnxt *bp) +{ + return (test_bit(BNXT_STATE_IN_SP_TASK, &bp->state) || + test_bit(BNXT_STATE_READ_STATS, &bp->state)); +} + int bnxt_close_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) { int rc = 0; @@ -6297,7 +6303,7 @@ int bnxt_close_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) clear_bit(BNXT_STATE_OPEN, &bp->state); smp_mb__after_atomic(); - while (test_bit(BNXT_STATE_IN_SP_TASK, &bp->state)) + while (bnxt_drv_busy(bp)) msleep(20); /* Flush rings and and disable interrupts */ @@ -6358,8 +6364,15 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) u32 i; struct bnxt *bp = netdev_priv(dev); - if (!bp->bnapi) + set_bit(BNXT_STATE_READ_STATS, &bp->state); + /* Make sure bnxt_close_nic() sees that we are reading stats before + * we check the BNXT_STATE_OPEN flag. + */ + smp_mb__after_atomic(); + if (!test_bit(BNXT_STATE_OPEN, &bp->state)) { + clear_bit(BNXT_STATE_READ_STATS, &bp->state); return; + } /* TODO check if we need to synchronize with bnxt_close path */ for (i = 0; i < bp->cp_nr_rings; i++) { @@ -6406,6 +6419,7 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) stats->tx_fifo_errors = le64_to_cpu(tx->tx_fifo_underruns); stats->tx_errors = le64_to_cpu(tx->tx_err); } + clear_bit(BNXT_STATE_READ_STATS, &bp->state); } static bool bnxt_mc_list_updated(struct bnxt *bp, u32 *rx_mask) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index f872a7db2ca8..3c9d484dbd4e 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1117,6 +1117,7 @@ struct bnxt { unsigned long state; #define BNXT_STATE_OPEN 0 #define BNXT_STATE_IN_SP_TASK 1 +#define BNXT_STATE_READ_STATS 2 struct bnxt_irq *irq_tbl; int total_irqs; |