1a59e2ecbSMichał Mirosław /* 2a59e2ecbSMichał Mirosław * Network device features. 3a59e2ecbSMichał Mirosław * 4a59e2ecbSMichał Mirosław * 5a59e2ecbSMichał Mirosław * This program is free software; you can redistribute it and/or 6a59e2ecbSMichał Mirosław * modify it under the terms of the GNU General Public License 7a59e2ecbSMichał Mirosław * as published by the Free Software Foundation; either version 8a59e2ecbSMichał Mirosław * 2 of the License, or (at your option) any later version. 9a59e2ecbSMichał Mirosław */ 10a59e2ecbSMichał Mirosław #ifndef _LINUX_NETDEV_FEATURES_H 11a59e2ecbSMichał Mirosław #define _LINUX_NETDEV_FEATURES_H 12a59e2ecbSMichał Mirosław 13c8f44affSMichał Mirosław #include <linux/types.h> 14c8f44affSMichał Mirosław 15a861a8b2SMichał Mirosław typedef u64 netdev_features_t; 16c8f44affSMichał Mirosław 17a19f2a6dSMichał Mirosław enum { 18a19f2a6dSMichał Mirosław NETIF_F_SG_BIT, /* Scatter/gather IO. */ 19a19f2a6dSMichał Mirosław NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ 2034324dc2SMichał Mirosław __UNUSED_NETIF_F_1, 21a19f2a6dSMichał Mirosław NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ 22a19f2a6dSMichał Mirosław NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ 23a19f2a6dSMichał Mirosław NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ 24a19f2a6dSMichał Mirosław NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ 25a19f2a6dSMichał Mirosław NETIF_F_HW_VLAN_TX_BIT, /* Transmit VLAN hw acceleration */ 26a19f2a6dSMichał Mirosław NETIF_F_HW_VLAN_RX_BIT, /* Receive VLAN hw acceleration */ 27a19f2a6dSMichał Mirosław NETIF_F_HW_VLAN_FILTER_BIT, /* Receive filtering on VLAN */ 28a19f2a6dSMichał Mirosław NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ 29a19f2a6dSMichał Mirosław NETIF_F_GSO_BIT, /* Enable software GSO. */ 30a19f2a6dSMichał Mirosław NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ 31a59e2ecbSMichał Mirosław /* do not use LLTX in new drivers */ 32a19f2a6dSMichał Mirosław NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ 33a19f2a6dSMichał Mirosław NETIF_F_GRO_BIT, /* Generic receive offload */ 34a19f2a6dSMichał Mirosław NETIF_F_LRO_BIT, /* large receive offload */ 35a59e2ecbSMichał Mirosław 36a19f2a6dSMichał Mirosław /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ 37a19f2a6dSMichał Mirosław NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ 38a19f2a6dSMichał Mirosław = NETIF_F_GSO_SHIFT, 39a19f2a6dSMichał Mirosław NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */ 40a19f2a6dSMichał Mirosław NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ 41a19f2a6dSMichał Mirosław NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ 42a19f2a6dSMichał Mirosław NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ 43a19f2a6dSMichał Mirosław NETIF_F_FSO_BIT, /* ... FCoE segmentation */ 44a19f2a6dSMichał Mirosław NETIF_F_GSO_RESERVED1, /* ... free (fill GSO_MASK to 8 bits) */ 45a19f2a6dSMichał Mirosław /**/NETIF_F_GSO_LAST, /* [can't be last bit, see GSO_MASK] */ 46a19f2a6dSMichał Mirosław NETIF_F_GSO_RESERVED2 /* ... free (fill GSO_MASK to 8 bits) */ 47a19f2a6dSMichał Mirosław = NETIF_F_GSO_LAST, 48a59e2ecbSMichał Mirosław 49a19f2a6dSMichał Mirosław NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ 50a19f2a6dSMichał Mirosław NETIF_F_SCTP_CSUM_BIT, /* SCTP checksum offload */ 51a19f2a6dSMichał Mirosław NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ 52a19f2a6dSMichał Mirosław NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ 53a19f2a6dSMichał Mirosław NETIF_F_RXHASH_BIT, /* Receive hashing offload */ 54a19f2a6dSMichał Mirosław NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ 55a19f2a6dSMichał Mirosław NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ 56a19f2a6dSMichał Mirosław NETIF_F_LOOPBACK_BIT, /* Enable loopback */ 57*36eabda3SBen Greear NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ 58a19f2a6dSMichał Mirosław 59a19f2a6dSMichał Mirosław /* 60a19f2a6dSMichał Mirosław * Add your fresh new feature above and remember to update 61a19f2a6dSMichał Mirosław * netdev_features_strings[] in net/core/ethtool.c and maybe 62a19f2a6dSMichał Mirosław * some feature mask #defines below. Please also describe it 63a19f2a6dSMichał Mirosław * in Documentation/networking/netdev-features.txt. 64a19f2a6dSMichał Mirosław */ 65a19f2a6dSMichał Mirosław 66a19f2a6dSMichał Mirosław /**/NETDEV_FEATURE_COUNT 67a19f2a6dSMichał Mirosław }; 68a19f2a6dSMichał Mirosław 69a19f2a6dSMichał Mirosław /* copy'n'paste compression ;) */ 70a19f2a6dSMichał Mirosław #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) 71a19f2a6dSMichał Mirosław #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) 72a19f2a6dSMichał Mirosław 73a19f2a6dSMichał Mirosław #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) 74a19f2a6dSMichał Mirosław #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) 75a19f2a6dSMichał Mirosław #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) 76a19f2a6dSMichał Mirosław #define NETIF_F_FSO __NETIF_F(FSO) 77a19f2a6dSMichał Mirosław #define NETIF_F_GRO __NETIF_F(GRO) 78a19f2a6dSMichał Mirosław #define NETIF_F_GSO __NETIF_F(GSO) 79a19f2a6dSMichał Mirosław #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) 80a19f2a6dSMichał Mirosław #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) 81a19f2a6dSMichał Mirosław #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) 82a19f2a6dSMichał Mirosław #define NETIF_F_HW_VLAN_FILTER __NETIF_F(HW_VLAN_FILTER) 83a19f2a6dSMichał Mirosław #define NETIF_F_HW_VLAN_RX __NETIF_F(HW_VLAN_RX) 84a19f2a6dSMichał Mirosław #define NETIF_F_HW_VLAN_TX __NETIF_F(HW_VLAN_TX) 85a19f2a6dSMichał Mirosław #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) 86a19f2a6dSMichał Mirosław #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) 87a19f2a6dSMichał Mirosław #define NETIF_F_LLTX __NETIF_F(LLTX) 88a19f2a6dSMichał Mirosław #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) 89a19f2a6dSMichał Mirosław #define NETIF_F_LRO __NETIF_F(LRO) 90a19f2a6dSMichał Mirosław #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) 91a19f2a6dSMichał Mirosław #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) 92a19f2a6dSMichał Mirosław #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) 93a19f2a6dSMichał Mirosław #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) 94a19f2a6dSMichał Mirosław #define NETIF_F_RXHASH __NETIF_F(RXHASH) 95a19f2a6dSMichał Mirosław #define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM) 96a19f2a6dSMichał Mirosław #define NETIF_F_SG __NETIF_F(SG) 97a19f2a6dSMichał Mirosław #define NETIF_F_TSO6 __NETIF_F(TSO6) 98a19f2a6dSMichał Mirosław #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) 99a19f2a6dSMichał Mirosław #define NETIF_F_TSO __NETIF_F(TSO) 100a19f2a6dSMichał Mirosław #define NETIF_F_UFO __NETIF_F(UFO) 101a19f2a6dSMichał Mirosław #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) 102*36eabda3SBen Greear #define NETIF_F_RXFCS __NETIF_F(RXFCS) 103a59e2ecbSMichał Mirosław 104a59e2ecbSMichał Mirosław /* Features valid for ethtool to change */ 105a59e2ecbSMichał Mirosław /* = all defined minus driver/device-class-related */ 106a59e2ecbSMichał Mirosław #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ 107a59e2ecbSMichał Mirosław NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) 108a19f2a6dSMichał Mirosław 109a19f2a6dSMichał Mirosław /* remember that ((t)1 << t_BITS) is undefined in C99 */ 110a19f2a6dSMichał Mirosław #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ 111a19f2a6dSMichał Mirosław (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ 112a19f2a6dSMichał Mirosław ~NETIF_F_NEVER_CHANGE) 113a19f2a6dSMichał Mirosław 114a19f2a6dSMichał Mirosław /* Segmentation offload feature mask */ 115a19f2a6dSMichał Mirosław #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ 116a19f2a6dSMichał Mirosław __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) 117a59e2ecbSMichał Mirosław 118a59e2ecbSMichał Mirosław /* List of features with software fallbacks. */ 119a59e2ecbSMichał Mirosław #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ 120a59e2ecbSMichał Mirosław NETIF_F_TSO6 | NETIF_F_UFO) 121a59e2ecbSMichał Mirosław 12234324dc2SMichał Mirosław #define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM 123a59e2ecbSMichał Mirosław #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) 124a59e2ecbSMichał Mirosław #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) 125a59e2ecbSMichał Mirosław #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) 126a59e2ecbSMichał Mirosław 127a59e2ecbSMichał Mirosław #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) 128a59e2ecbSMichał Mirosław 129a59e2ecbSMichał Mirosław #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ 130a59e2ecbSMichał Mirosław NETIF_F_FSO) 131a59e2ecbSMichał Mirosław 132a59e2ecbSMichał Mirosław /* 133a59e2ecbSMichał Mirosław * If one device supports one of these features, then enable them 134a59e2ecbSMichał Mirosław * for all in netdev_increment_features. 135a59e2ecbSMichał Mirosław */ 136a59e2ecbSMichał Mirosław #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ 137a59e2ecbSMichał Mirosław NETIF_F_SG | NETIF_F_HIGHDMA | \ 138a59e2ecbSMichał Mirosław NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) 139a59e2ecbSMichał Mirosław /* 140a59e2ecbSMichał Mirosław * If one device doesn't support one of these features, then disable it 141a59e2ecbSMichał Mirosław * for all in netdev_increment_features. 142a59e2ecbSMichał Mirosław */ 143a59e2ecbSMichał Mirosław #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) 144a59e2ecbSMichał Mirosław 145a59e2ecbSMichał Mirosław /* changeable features with no special hardware requirements */ 146a59e2ecbSMichał Mirosław #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) 147a59e2ecbSMichał Mirosław 148a59e2ecbSMichał Mirosław #endif /* _LINUX_NETDEV_FEATURES_H */ 149