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NetBSD compatibility: Increase daynaport minimum packet size to 128 bytes

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This commit is contained in:
Uwe Seimet 2023-11-10 16:51:30 +01:00
parent a164340179
commit c7b6f10345
1 changed files with 7 additions and 6 deletions
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13
cpp/devices/scsi_daynaport.cpp
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@ -212,13 +212,14 @@ int SCSIDaynaPort::Read(cdb_t cdb, vector<uint8_t>& buf, uint64_t)
// response->flags = e_no_more_data;
// }
int size = rx_packet_size;
if (size < 64) {
// A frame must have at least 64 bytes (see https://github.com/PiSCSI/piscsi/issues/619)
if (size < 128) {
// A frame must have at least 128 bytes (see https://github.com/PiSCSI/piscsi/issues/619
// and https://github.com/PiSCSI/piscsi/issues/1098.
// Note that this work-around breaks the checksum. As currently there are no known drivers
// that care for the checksum, and the Daynaport driver for the Atari expects frames of
// 64 bytes it was decided to accept the broken checksum. If a driver should pop up that
// breaks because of this, the work-around has to be re-evaluated.
size = 64;
// that care for the checksum, the Daynaport driver for the Atari expects frames of 64 bytes
// and the driver for NetBSD 128 bytes it was decided to accept the broken checksum.
// If a driver should pop up that breaks because of this, the work-around has to be re-evaluated.
size = 128;
}
SetInt16(buf, 0, size);
SetInt32(buf, 2, tap.HasPendingPackets() ? 0x10 : 0x00);