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 15typedef u64 netdev_features_t; 16 17enum { 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_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_GRE_BIT, /* ... GRE with TSO */ 45 NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ 46 NETIF_F_GSO_IPIP_BIT, /* ... IPIP tunnel with TSO */ 47 NETIF_F_GSO_SIT_BIT, /* ... SIT tunnel 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_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ 51 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ 52 NETIF_F_GSO_TUNNEL_REMCSUM_BIT, 53 54 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ 55 NETIF_F_SCTP_CSUM_BIT, /* SCTP checksum offload */ 56 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ 57 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ 58 NETIF_F_RXHASH_BIT, /* Receive hashing offload */ 59 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ 60 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ 61 NETIF_F_LOOPBACK_BIT, /* Enable loopback */ 62 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ 63 NETIF_F_RXALL_BIT, /* Receive errored frames too */ 64 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */ 65 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */ 66 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ 67 NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ 68 NETIF_F_BUSY_POLL_BIT, /* Busy poll */ 69 NETIF_F_HW_SWITCH_OFFLOAD_BIT, /* HW switch offload */ 70 71 /* 72 * Add your fresh new feature above and remember to update 73 * netdev_features_strings[] in net/core/ethtool.c and maybe 74 * some feature mask #defines below. Please also describe it 75 * in Documentation/networking/netdev-features.txt. 76 */ 77 78 /**/NETDEV_FEATURE_COUNT 79}; 80 81/* copy'n'paste compression ;) */ 82#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) 83#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) 84 85#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) 86#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) 87#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) 88#define NETIF_F_FSO __NETIF_F(FSO) 89#define NETIF_F_GRO __NETIF_F(GRO) 90#define NETIF_F_GSO __NETIF_F(GSO) 91#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) 92#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) 93#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) 94#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) 95#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) 96#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) 97#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) 98#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) 99#define NETIF_F_LLTX __NETIF_F(LLTX) 100#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) 101#define NETIF_F_LRO __NETIF_F(LRO) 102#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) 103#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) 104#define NETIF_F_NTUPLE __NETIF_F(NTUPLE) 105#define NETIF_F_RXCSUM __NETIF_F(RXCSUM) 106#define NETIF_F_RXHASH __NETIF_F(RXHASH) 107#define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM) 108#define NETIF_F_SG __NETIF_F(SG) 109#define NETIF_F_TSO6 __NETIF_F(TSO6) 110#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) 111#define NETIF_F_TSO __NETIF_F(TSO) 112#define NETIF_F_UFO __NETIF_F(UFO) 113#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) 114#define NETIF_F_RXFCS __NETIF_F(RXFCS) 115#define NETIF_F_RXALL __NETIF_F(RXALL) 116#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) 117#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) 118#define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP) 119#define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT) 120#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) 121#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) 122#define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) 123#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) 124#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) 125#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) 126#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) 127#define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL) 128#define NETIF_F_HW_SWITCH_OFFLOAD __NETIF_F(HW_SWITCH_OFFLOAD) 129 130/* Features valid for ethtool to change */ 131/* = all defined minus driver/device-class-related */ 132#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ 133 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) 134 135/* remember that ((t)1 << t_BITS) is undefined in C99 */ 136#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ 137 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ 138 ~NETIF_F_NEVER_CHANGE) 139 140/* Segmentation offload feature mask */ 141#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ 142 __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) 143 144/* List of features with software fallbacks. */ 145#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ 146 NETIF_F_TSO6 | NETIF_F_UFO) 147 148#define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM 149#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) 150#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) 151#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) 152 153#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) 154 155#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ 156 NETIF_F_FSO) 157 158/* 159 * If one device supports one of these features, then enable them 160 * for all in netdev_increment_features. 161 */ 162#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ 163 NETIF_F_SG | NETIF_F_HIGHDMA | \ 164 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED | \ 165 NETIF_F_HW_SWITCH_OFFLOAD) 166 167/* 168 * If one device doesn't support one of these features, then disable it 169 * for all in netdev_increment_features. 170 */ 171#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) 172 173/* changeable features with no special hardware requirements */ 174#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) 175 176#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \ 177 NETIF_F_HW_VLAN_CTAG_RX | \ 178 NETIF_F_HW_VLAN_CTAG_TX | \ 179 NETIF_F_HW_VLAN_STAG_FILTER | \ 180 NETIF_F_HW_VLAN_STAG_RX | \ 181 NETIF_F_HW_VLAN_STAG_TX) 182 183#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ 184 NETIF_F_GSO_GRE_CSUM | \ 185 NETIF_F_GSO_IPIP | \ 186 NETIF_F_GSO_SIT | \ 187 NETIF_F_GSO_UDP_TUNNEL | \ 188 NETIF_F_GSO_UDP_TUNNEL_CSUM) 189 190#endif /* _LINUX_NETDEV_FEATURES_H */ 191