diff options
| -rw-r--r-- | sys/dev/usb/net/if_smsc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/dev/usb/net/if_smsc.c b/sys/dev/usb/net/if_smsc.c index 95af5eb..5c3db72 100644 --- a/sys/dev/usb/net/if_smsc.c +++ b/sys/dev/usb/net/if_smsc.c @@ -1009,6 +1009,10 @@ smsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) /* Check if RX TCP/UDP checksumming is being offloaded */ if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { + + struct ether_header *eh; + + eh = mtod(m, struct ether_header *); /* Remove the extra 2 bytes of the csum */ pktlen -= 2; @@ -1020,8 +1024,10 @@ smsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) * the padding bytes as well. Therefore to be safe we * ignore the H/W csum on frames less than or equal to * 64 bytes. + * + * Ignore H/W csum for non-IPv4 packets. */ - if (pktlen > ETHER_MIN_LEN) { + if (be16toh(eh->ether_type) == ETHERTYPE_IP && pktlen > ETHER_MIN_LEN) { /* Indicate the UDP/TCP csum has been calculated */ m->m_pkthdr.csum_flags |= CSUM_DATA_VALID; |
