diff options
Diffstat (limited to 'sys/dev/e1000/if_lem.c')
| -rw-r--r-- | sys/dev/e1000/if_lem.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/sys/dev/e1000/if_lem.c b/sys/dev/e1000/if_lem.c index 0ecf651..553aeef 100644 --- a/sys/dev/e1000/if_lem.c +++ b/sys/dev/e1000/if_lem.c @@ -281,6 +281,9 @@ MODULE_DEPEND(lem, ether, 1, 1, 1); #define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000) #define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024) +#define MAX_INTS_PER_SEC 8000 +#define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256)) + static int lem_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV); static int lem_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR); static int lem_tx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_TADV); @@ -442,6 +445,11 @@ lem_attach(device_t dev) &adapter->tx_abs_int_delay, E1000_REGISTER(&adapter->hw, E1000_TADV), lem_tx_abs_int_delay_dflt); + lem_add_int_delay_sysctl(adapter, "itr", + "interrupt delay limit in usecs/4", + &adapter->tx_itr, + E1000_REGISTER(&adapter->hw, E1000_ITR), + DEFAULT_ITR); } /* Sysctls for limiting the amount of work done in the taskqueue */ @@ -1337,12 +1345,16 @@ lem_handle_rxtx(void *context, int pending) if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - lem_rxeof(adapter, adapter->rx_process_limit, NULL); + bool more = lem_rxeof(adapter, adapter->rx_process_limit, NULL); EM_TX_LOCK(adapter); lem_txeof(adapter); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) lem_start_locked(ifp); EM_TX_UNLOCK(adapter); + if (more) { + taskqueue_enqueue(adapter->tq, &adapter->rxtx_task); + return; + } } if (ifp->if_drv_flags & IFF_DRV_RUNNING) @@ -3269,8 +3281,6 @@ lem_setup_receive_structures(struct adapter *adapter) * Enable receive unit. * **********************************************************************/ -#define MAX_INTS_PER_SEC 8000 -#define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256) static void lem_initialize_receive_unit(struct adapter *adapter) @@ -4596,6 +4606,8 @@ lem_sysctl_int_delay(SYSCTL_HANDLER_ARGS) return (EINVAL); info->value = usecs; ticks = EM_USECS_TO_TICKS(usecs); + if (info->offset == E1000_ITR) /* units are 256ns here */ + ticks *= 4; adapter = info->adapter; |
