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-rw-r--r--sys/dev/ale/if_ale.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/dev/ale/if_ale.c b/sys/dev/ale/if_ale.c
index f5ecb6a..65e068f 100644
--- a/sys/dev/ale/if_ale.c
+++ b/sys/dev/ale/if_ale.c
@@ -620,6 +620,14 @@ ale_attach(device_t dev)
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
ifp->if_capenable = ifp->if_capabilities;
+ /*
+ * Even though controllers supported by ale(3) have Rx checksum
+ * offload bug the workaround for fragmented frames seemed to
+ * work so far. However it seems Rx checksum offload does not
+ * work under certain conditions. So disable Rx checksum offload
+ * until I find more clue about it but allow users to override it.
+ */
+ ifp->if_capenable &= ~IFCAP_RXCSUM;
/* Tell the upper layer(s) we support long frames. */
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
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