1 /* 2 * Network device features. 3 * 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 8 * 2 of the License, or (at your option) any later version. 9 */ 10 #ifndef _LINUX_NETDEV_FEATURES_H 11 #define _LINUX_NETDEV_FEATURES_H 12 13 #include <linux/types.h> 14 15 typedef u64 netdev_features_t; 16 17 enum { 18 NETIF_F_SG_BIT, /* Scatter/gather IO. */ 19 NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ 20 __UNUSED_NETIF_F_1, 21 NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ 22 NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ 23 NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ 24 NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ 25 NETIF_F_HW_VLAN_TX_BIT, /* Transmit VLAN hw acceleration */ 26 NETIF_F_HW_VLAN_RX_BIT, /* Receive VLAN hw acceleration */ 27 NETIF_F_HW_VLAN_FILTER_BIT, /* Receive filtering on VLAN */ 28 NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ 29 NETIF_F_GSO_BIT, /* Enable software GSO. */ 30 NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ 31 /* do not use LLTX in new drivers */ 32 NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ 33 NETIF_F_GRO_BIT, /* Generic receive offload */ 34 NETIF_F_LRO_BIT, /* large receive offload */ 35 36 /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ 37 NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ 38 = NETIF_F_GSO_SHIFT, 39 NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */ 40 NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ 41 NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ 42 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ 43 NETIF_F_FSO_BIT, /* ... FCoE segmentation */ 44 NETIF_F_GSO_RESERVED1, /* ... free (fill GSO_MASK to 8 bits) */ 45 /**/NETIF_F_GSO_LAST, /* [can't be last bit, see GSO_MASK] */ 46 NETIF_F_GSO_RESERVED2 /* ... free (fill GSO_MASK to 8 bits) */ 47 = NETIF_F_GSO_LAST, 48 49 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ 50 NETIF_F_SCTP_CSUM_BIT, /* SCTP checksum offload */ 51 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ 52 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ 53 NETIF_F_RXHASH_BIT, /* Receive hashing offload */ 54 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ 55 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ 56 NETIF_F_LOOPBACK_BIT, /* Enable loopback */ 57 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ 58 NETIF_F_RXALL_BIT, /* Receive errored frames too */ 59 60 /* 61 * Add your fresh new feature above and remember to update 62 * netdev_features_strings[] in net/core/ethtool.c and maybe 63 * some feature mask #defines below. Please also describe it 64 * in Documentation/networking/netdev-features.txt. 65 */ 66 67 /**/NETDEV_FEATURE_COUNT 68 }; 69 70 /* copy'n'paste compression ;) */ 71 #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) 72 #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) 73 74 #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) 75 #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) 76 #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) 77 #define NETIF_F_FSO __NETIF_F(FSO) 78 #define NETIF_F_GRO __NETIF_F(GRO) 79 #define NETIF_F_GSO __NETIF_F(GSO) 80 #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) 81 #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) 82 #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) 83 #define NETIF_F_HW_VLAN_FILTER __NETIF_F(HW_VLAN_FILTER) 84 #define NETIF_F_HW_VLAN_RX __NETIF_F(HW_VLAN_RX) 85 #define NETIF_F_HW_VLAN_TX __NETIF_F(HW_VLAN_TX) 86 #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) 87 #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) 88 #define NETIF_F_LLTX __NETIF_F(LLTX) 89 #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) 90 #define NETIF_F_LRO __NETIF_F(LRO) 91 #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) 92 #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) 93 #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) 94 #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) 95 #define NETIF_F_RXHASH __NETIF_F(RXHASH) 96 #define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM) 97 #define NETIF_F_SG __NETIF_F(SG) 98 #define NETIF_F_TSO6 __NETIF_F(TSO6) 99 #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) 100 #define NETIF_F_TSO __NETIF_F(TSO) 101 #define NETIF_F_UFO __NETIF_F(UFO) 102 #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) 103 #define NETIF_F_RXFCS __NETIF_F(RXFCS) 104 #define NETIF_F_RXALL __NETIF_F(RXALL) 105 106 /* Features valid for ethtool to change */ 107 /* = all defined minus driver/device-class-related */ 108 #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ 109 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) 110 111 /* remember that ((t)1 << t_BITS) is undefined in C99 */ 112 #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ 113 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ 114 ~NETIF_F_NEVER_CHANGE) 115 116 /* Segmentation offload feature mask */ 117 #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ 118 __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) 119 120 /* List of features with software fallbacks. */ 121 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ 122 NETIF_F_TSO6 | NETIF_F_UFO) 123 124 #define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM 125 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) 126 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) 127 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) 128 129 #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) 130 131 #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ 132 NETIF_F_FSO) 133 134 /* 135 * If one device supports one of these features, then enable them 136 * for all in netdev_increment_features. 137 */ 138 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ 139 NETIF_F_SG | NETIF_F_HIGHDMA | \ 140 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) 141 /* 142 * If one device doesn't support one of these features, then disable it 143 * for all in netdev_increment_features. 144 */ 145 #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) 146 147 /* changeable features with no special hardware requirements */ 148 #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) 149 150 #endif /* _LINUX_NETDEV_FEATURES_H */ 151