diff options
| -rw-r--r-- | hw/e1000.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/e1000.c b/hw/e1000.c index 532efdc27d..677165f830 100644 --- a/hw/e1000.c +++ b/hw/e1000.c @@ -384,9 +384,12 @@ xmit_seg(E1000State *s) } else // UDP cpu_to_be16wu((uint16_t *)(tp->data+css+4), len); if (tp->sum_needed & E1000_TXD_POPTS_TXSM) { + unsigned int phsum; // add pseudo-header length before checksum calculation sp = (uint16_t *)(tp->data + tp->tucso); - cpu_to_be16wu(sp, be16_to_cpup(sp) + len); + phsum = be16_to_cpup(sp) + len; + phsum = (phsum >> 16) + (phsum & 0xffff); + cpu_to_be16wu(sp, phsum); } tp->tso_frames++; } |