diff options
| -rw-r--r-- | sys/dev/e1000/if_em.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 31a4ca8..49e5abd 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -1377,8 +1377,15 @@ em_init_locked(struct adapter *adapter) ifp->if_hwassist = 0; if (ifp->if_capenable & IFCAP_TXCSUM) ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP); - if (ifp->if_capenable & IFCAP_TSO4) - ifp->if_hwassist |= CSUM_TSO; + /* + ** There have proven to be problems with TSO when not + ** at full gigabit speed, so disable the assist automatically + ** when at lower speeds. -jfv + */ + if (ifp->if_capenable & IFCAP_TSO4) { + if (adapter->link_speed == SPEED_1000) + ifp->if_hwassist |= CSUM_TSO; + } /* Configure for OS presence */ em_init_manageability(adapter); |
