| Michał Mirosław | a59e2ec | 2011-11-15 15:29:55 +0000 | [diff] [blame^] | 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 | /* Net device feature bits; if you change something, |
| 14 | * also update netdev_features_strings[] in ethtool.c */ |
| 15 | |
| 16 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ |
| 17 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
| 18 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
| 19 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ |
| 20 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
| 21 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
| 22 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ |
| 23 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ |
| 24 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ |
| 25 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ |
| 26 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ |
| 27 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
| 28 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
| 29 | /* do not use LLTX in new drivers */ |
| 30 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
| 31 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
| 32 | #define NETIF_F_LRO 32768 /* large receive offload */ |
| 33 | |
| 34 | /* the GSO_MASK reserves bits 16 through 23 */ |
| 35 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
| 36 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
| 37 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
| 38 | #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ |
| 39 | #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ |
| 40 | #define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */ |
| 41 | #define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */ |
| 42 | #define NETIF_F_LOOPBACK (1 << 31) /* Enable loopback */ |
| 43 | |
| 44 | /* Segmentation offload features */ |
| 45 | #define NETIF_F_GSO_SHIFT 16 |
| 46 | #define NETIF_F_GSO_MASK 0x00ff0000 |
| 47 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
| 48 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
| 49 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
| 50 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
| 51 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) |
| 52 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
| 53 | |
| 54 | /* Features valid for ethtool to change */ |
| 55 | /* = all defined minus driver/device-class-related */ |
| 56 | #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ |
| 57 | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) |
| 58 | #define NETIF_F_ETHTOOL_BITS (0xff3fffff & ~NETIF_F_NEVER_CHANGE) |
| 59 | |
| 60 | /* List of features with software fallbacks. */ |
| 61 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ |
| 62 | NETIF_F_TSO6 | NETIF_F_UFO) |
| 63 | |
| 64 | #define NETIF_F_GEN_CSUM (NETIF_F_HW_CSUM | NETIF_F_NO_CSUM) |
| 65 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
| 66 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) |
| 67 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) |
| 68 | |
| 69 | #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) |
| 70 | |
| 71 | #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ |
| 72 | NETIF_F_FSO) |
| 73 | |
| 74 | /* |
| 75 | * If one device supports one of these features, then enable them |
| 76 | * for all in netdev_increment_features. |
| 77 | */ |
| 78 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ |
| 79 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
| 80 | NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) |
| 81 | /* |
| 82 | * If one device doesn't support one of these features, then disable it |
| 83 | * for all in netdev_increment_features. |
| 84 | */ |
| 85 | #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) |
| 86 | |
| 87 | /* changeable features with no special hardware requirements */ |
| 88 | #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) |
| 89 | |
| 90 | #endif /* _LINUX_NETDEV_FEATURES_H */ |