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_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */ 26 NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */ 27 NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ 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_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ 40 NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ 41 NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ 42 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ 43 NETIF_F_FSO_BIT, /* ... FCoE segmentation */ 44 NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ 45 NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ 46 NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */ 47 NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */ 48 NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ 49 NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ 50 NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 51 * in hardware and all other 52 * headers in software. 53 */ 54 NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ 55 NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */ 56 NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */ 57 NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */ 58 NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */ 59 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ 60 NETIF_F_GSO_UDP_L4_BIT, 61 62 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ 63 NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */ 64 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ 65 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ 66 NETIF_F_RXHASH_BIT, /* Receive hashing offload */ 67 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ 68 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ 69 NETIF_F_LOOPBACK_BIT, /* Enable loopback */ 70 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ 71 NETIF_F_RXALL_BIT, /* Receive errored frames too */ 72 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */ 73 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */ 74 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ 75 NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ 76 77 NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */ 78 NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */ 79 NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */ 80 NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */ 81 82 NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */ 83 NETIF_F_HW_TLS_RECORD_BIT, /* Offload TLS record */ 84 85 /* 86 * Add your fresh new feature above and remember to update 87 * netdev_features_strings[] in net/core/ethtool.c and maybe 88 * some feature mask #defines below. Please also describe it 89 * in Documentation/networking/netdev-features.txt. 90 */ 91 92 /**/NETDEV_FEATURE_COUNT 93 }; 94 95 /* copy'n'paste compression ;) */ 96 #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) 97 #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) 98 99 #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) 100 #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) 101 #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) 102 #define NETIF_F_FSO __NETIF_F(FSO) 103 #define NETIF_F_GRO __NETIF_F(GRO) 104 #define NETIF_F_GRO_HW __NETIF_F(GRO_HW) 105 #define NETIF_F_GSO __NETIF_F(GSO) 106 #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) 107 #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) 108 #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) 109 #define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) 110 #define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) 111 #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) 112 #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) 113 #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) 114 #define NETIF_F_LLTX __NETIF_F(LLTX) 115 #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) 116 #define NETIF_F_LRO __NETIF_F(LRO) 117 #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) 118 #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) 119 #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) 120 #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) 121 #define NETIF_F_RXHASH __NETIF_F(RXHASH) 122 #define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC) 123 #define NETIF_F_SG __NETIF_F(SG) 124 #define NETIF_F_TSO6 __NETIF_F(TSO6) 125 #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) 126 #define NETIF_F_TSO __NETIF_F(TSO) 127 #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) 128 #define NETIF_F_RXFCS __NETIF_F(RXFCS) 129 #define NETIF_F_RXALL __NETIF_F(RXALL) 130 #define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) 131 #define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) 132 #define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4) 133 #define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6) 134 #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) 135 #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) 136 #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) 137 #define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) 138 #define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) 139 #define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP) 140 #define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP) 141 #define NETIF_F_GSO_UDP __NETIF_F(GSO_UDP) 142 #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) 143 #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) 144 #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) 145 #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) 146 #define NETIF_F_HW_TC __NETIF_F(HW_TC) 147 #define NETIF_F_HW_ESP __NETIF_F(HW_ESP) 148 #define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM) 149 #define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT) 150 #define NETIF_F_HW_TLS_RECORD __NETIF_F(HW_TLS_RECORD) 151 #define NETIF_F_GSO_UDP_L4 __NETIF_F(GSO_UDP_L4) 152 153 #define for_each_netdev_feature(mask_addr, bit) \ 154 for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT) 155 156 /* Features valid for ethtool to change */ 157 /* = all defined minus driver/device-class-related */ 158 #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ 159 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) 160 161 /* remember that ((t)1 << t_BITS) is undefined in C99 */ 162 #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ 163 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ 164 ~NETIF_F_NEVER_CHANGE) 165 166 /* Segmentation offload feature mask */ 167 #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ 168 __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) 169 170 /* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be 171 * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- 172 * this would be contradictory 173 */ 174 #define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 175 NETIF_F_HW_CSUM) 176 177 #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \ 178 NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID) 179 180 #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ 181 NETIF_F_FSO) 182 183 /* List of features with software fallbacks. */ 184 #define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | \ 185 NETIF_F_GSO_SCTP) 186 187 /* 188 * If one device supports one of these features, then enable them 189 * for all in netdev_increment_features. 190 */ 191 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ 192 NETIF_F_SG | NETIF_F_HIGHDMA | \ 193 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) 194 195 /* 196 * If one device doesn't support one of these features, then disable it 197 * for all in netdev_increment_features. 198 */ 199 #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) 200 201 /* 202 * If upper/master device has these features disabled, they must be disabled 203 * on all lower/slave devices as well. 204 */ 205 #define NETIF_F_UPPER_DISABLES NETIF_F_LRO 206 207 /* changeable features with no special hardware requirements */ 208 #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) 209 210 #define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \ 211 NETIF_F_HW_VLAN_CTAG_RX | \ 212 NETIF_F_HW_VLAN_CTAG_TX | \ 213 NETIF_F_HW_VLAN_STAG_FILTER | \ 214 NETIF_F_HW_VLAN_STAG_RX | \ 215 NETIF_F_HW_VLAN_STAG_TX) 216 217 #define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ 218 NETIF_F_GSO_GRE_CSUM | \ 219 NETIF_F_GSO_IPXIP4 | \ 220 NETIF_F_GSO_IPXIP6 | \ 221 NETIF_F_GSO_UDP_L4 | \ 222 NETIF_F_GSO_UDP_TUNNEL | \ 223 NETIF_F_GSO_UDP_TUNNEL_CSUM) 224 225 #endif /* _LINUX_NETDEV_FEATURES_H */ 226