server: switch to 16-bit crc

[fio.git] / server.h

diff --git a/server.h b/server.h
index d66782d532a6124c8364afec6e66ad29da584f44..73e00a5c13a93d496392b67f1d89e3ec9e0b8a6b 100644 (file)
--- a/server.h
+++ b/server.h
@@ -13,10 +13,9 @@ struct fio_net_cmd {
        uint16_t opcode;        /* command opcode */
        uint32_t flags;         /* modifier flags */
        uint64_t serial;        /* serial number */
-       uint32_t pad;
        uint32_t pdu_len;       /* length of post-cmd layload */
-       uint32_t cmd_crc32;     /* cmd checksum */
-       uint32_t pdu_crc32;     /* payload checksum */
+       uint16_t cmd_crc16;     /* cmd checksum */
+       uint16_t pdu_crc16;     /* payload checksum */
        uint8_t payload[0];     /* payload */
 };
 
@@ -32,6 +31,10 @@ enum {
        FIO_NET_CMD_ACK         = 4,
        FIO_NET_CMD_NAK         = 5,
        FIO_NET_CMD_TEXT        = 6,
+
+       /* crc does not include the crc fields */
+       FIO_NET_CMD_CRC_SZ      = sizeof(struct fio_net_cmd) -
+                                       2 * sizeof(uint16_t),
 };
 
 extern int fio_server(void);