diff options
Diffstat (limited to 'hw/net/cadence_gem.c')
| -rw-r--r-- | hw/net/cadence_gem.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index 0346f3e..e5f3c985 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -664,6 +664,13 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size) GEM_DMACFG_RBUFSZ_S) * GEM_DMACFG_RBUFSZ_MUL; bytes_to_copy = size; + /* Hardware allows a zero value here but warns against it. To avoid QEMU + * indefinite loops we enforce a minimum value here + */ + if (rxbufsize < GEM_DMACFG_RBUFSZ_MUL) { + rxbufsize = GEM_DMACFG_RBUFSZ_MUL; + } + /* Pad to minimum length. Assume FCS field is stripped, logic * below will increment it to the real minimum of 64 when * not FCS stripping |