IFM_X
#define IFM_2500_X IFM_X(63)
#define IFM_10G_KX4 IFM_X(32) /* 10GBase-KX4 backplane */
#define IFM_10G_KR IFM_X(33) /* 10GBase-KR backplane */
#define IFM_10G_CR1 IFM_X(34) /* 10GBase-CR1 Twinax splitter */
#define IFM_20G_KR2 IFM_X(35) /* 20GBase-KR2 backplane */
#define IFM_2500_KX IFM_X(36) /* 2500Base-KX backplane */
#define IFM_2500_T IFM_X(37) /* 2500Base-T - RJ45 (NBaseT) */
#define IFM_5000_T IFM_X(38) /* 5000Base-T - RJ45 (NBaseT) */
#define IFM_50G_PCIE IFM_X(39) /* 50G Ethernet over PCIE */
#define IFM_25G_PCIE IFM_X(40) /* 25G Ethernet over PCIE */
#define IFM_1000_SGMII IFM_X(41) /* 1G media interface */
#define IFM_10G_SFI IFM_X(42) /* 10G media interface */
#define IFM_40G_XLPPI IFM_X(43) /* 40G media interface */
#define IFM_1000_CX_SGMII IFM_X(44) /* 1000Base-CX-SGMII */
#define IFM_40G_KR4 IFM_X(45) /* 40GBase-KR4 */
#define IFM_10G_ER IFM_X(46) /* 10GBase-ER */
#define IFM_100G_CR4 IFM_X(47) /* 100GBase-CR4 */
#define IFM_100G_SR4 IFM_X(48) /* 100GBase-SR4 */
#define IFM_100G_KR4 IFM_X(49) /* 100GBase-KR4 */
#define IFM_100G_LR4 IFM_X(50) /* 100GBase-LR4 */
#define IFM_56G_R4 IFM_X(51) /* 56GBase-R4 */
#define IFM_100_T IFM_X(52) /* 100BaseT - RJ45 */
#define IFM_25G_CR IFM_X(53) /* 25GBase-CR */
#define IFM_25G_KR IFM_X(54) /* 25GBase-KR */
#define IFM_25G_SR IFM_X(55) /* 25GBase-SR */
#define IFM_50G_CR2 IFM_X(56) /* 50GBase-CR2 */
#define IFM_50G_KR2 IFM_X(57) /* 50GBase-KR2 */