H2C_LEN_CXDRVHDR_V7
h2c->hdr.len = len - H2C_LEN_CXDRVHDR_V7;
h2c->hdr.len = len - H2C_LEN_CXDRVHDR_V7;
h2c->hdr.len = len - H2C_LEN_CXDRVHDR_V7;
h2c->hdr.len = len - H2C_LEN_CXDRVHDR_V7;
h2c->hdr.len = sizeof(*h2c) - H2C_LEN_CXDRVHDR_V7;