diff options
Diffstat (limited to 'sys/dev/ixgbe/if_ixv.c')
| -rw-r--r-- | sys/dev/ixgbe/if_ixv.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/sys/dev/ixgbe/if_ixv.c b/sys/dev/ixgbe/if_ixv.c index a550a85..bd6b0ed 100644 --- a/sys/dev/ixgbe/if_ixv.c +++ b/sys/dev/ixgbe/if_ixv.c @@ -115,6 +115,8 @@ static void ixv_save_stats(struct adapter *); static void ixv_init_stats(struct adapter *); static void ixv_update_stats(struct adapter *); static void ixv_add_stats_sysctls(struct adapter *); +static void ixv_set_sysctl_value(struct adapter *, const char *, + const char *, int *, int); /* The MSI/X Interrupt handlers */ static void ixv_msix_que(void *); @@ -301,6 +303,15 @@ ixv_attach(device_t dev) goto err_out; } + /* Sysctls for limiting the amount of work done in the taskqueues */ + ixv_set_sysctl_value(adapter, "rx_processing_limit", + "max number of rx packets to process", + &adapter->rx_process_limit, ixv_rx_process_limit); + + ixv_set_sysctl_value(adapter, "tx_processing_limit", + "max number of tx packets to process", + &adapter->tx_process_limit, ixv_tx_process_limit); + /* Do descriptor calc and sanity checks */ if (((ixv_txd * sizeof(union ixgbe_adv_tx_desc)) % DBA_ALIGN) != 0 || ixv_txd < MIN_TXD || ixv_txd > MAX_TXD) { @@ -1555,9 +1566,6 @@ ixv_initialize_transmit_units(struct adapter *adapter) /* Set Tx Tail register */ txr->tail = IXGBE_VFTDT(i); - /* Set the processing limit */ - txr->process_limit = ixv_tx_process_limit; - /* Set Ring parameters */ IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i), (tdba & 0x00000000ffffffffULL)); @@ -1637,8 +1645,6 @@ ixv_initialize_receive_units(struct adapter *adapter) IXGBE_WRITE_REG(hw, IXGBE_VFRDH(rxr->me), 0); IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), adapter->num_rx_desc - 1); - /* Set the processing limit */ - rxr->process_limit = ixv_rx_process_limit; /* Set Rx Tail register */ rxr->tail = IXGBE_VFRDT(rxr->me); @@ -2041,6 +2047,16 @@ ixv_add_stats_sysctls(struct adapter *adapter) "# of times not enough descriptors were available during TX"); } +static void +ixv_set_sysctl_value(struct adapter *adapter, const char *name, + const char *description, int *limit, int value) +{ + *limit = value; + SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), + SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), + OID_AUTO, name, CTLFLAG_RW, limit, value, description); +} + /********************************************************************** * * This routine is called only when em_display_debug_stats is enabled. |
