Edit File: netdev_features.h
/* * Network device features. * * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_NETDEV_FEATURES_H #define _LINUX_NETDEV_FEATURES_H #include <linux/types.h> typedef u64 netdev_features_t; enum { NETIF_F_SG_BIT, /* Scatter/gather IO. */ NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ __UNUSED_NETIF_F_1, NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ NETIF_F_HW_VLAN_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */ NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */ NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ NETIF_F_GSO_BIT, /* Enable software GSO. */ NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ /* do not use LLTX in new drivers */ NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ NETIF_F_GRO_BIT, /* Generic receive offload */ NETIF_F_LRO_BIT, /* large receive offload */ /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ = NETIF_F_GSO_SHIFT, NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */ NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ NETIF_F_FSO_BIT, /* ... FCoE segmentation */ NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ NETIF_F_GSO_IPIP_BIT, /* ... IPIP tunnel with TSO */ NETIF_F_GSO_SIT_BIT, /* ... SIT tunnel with TSO */ NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ __NETIF_F_GSO_UNUSED_BIT, /* RHEL: the last free GSO bit. * !!! Any reuse of this bit needs * !!! a prior agreement with the * !!! Networking Services team. */ /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ __NETIF_F_GSO_UNUSED_BIT, NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */ NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ NETIF_F_RXHASH_BIT, /* Receive hashing offload */ NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ NETIF_F_LOOPBACK_BIT, /* Enable loopback */ NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ NETIF_F_RXALL_BIT, /* Receive errored frames too */ NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */ NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */ NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ NETIF_F_BUSY_POLL_BIT, /* Busy poll */ NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 * in hardware and all other * headers in software. */ NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */ NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ /* * RHEL only: There is no more space for new GSO bits. * skb_shared_info->gso_type has only 16 bits and all of them are * used. We tried to extend skb_shared_info but that had performance * impact. Hence, no more GSO bits can be backported. * * Non-GSO related bits can be still added here. Please add them * from the top, replacing the placeholder with the highest number. */ __NETIF_F_PLACEHOLDER_1, __NETIF_F_PLACEHOLDER_2, __NETIF_F_PLACEHOLDER_3, __NETIF_F_PLACEHOLDER_4, __NETIF_F_PLACEHOLDER_5, NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */ NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */ NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */ /* * Add your fresh new feature above and remember to update * netdev_features_strings[] in net/core/ethtool.c and maybe * some feature mask #defines below. Please also describe it * in Documentation/networking/netdev-features.txt. */ /**/NETDEV_FEATURE_COUNT }; /* copy'n'paste compression ;) */ #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) #define NETIF_F_FSO __NETIF_F(FSO) #define NETIF_F_GRO __NETIF_F(GRO) #define NETIF_F_GRO_HW __NETIF_F(GRO_HW) #define NETIF_F_GSO __NETIF_F(GSO) #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) #define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) #define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) #define NETIF_F_LLTX __NETIF_F(LLTX) #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) #define NETIF_F_LRO __NETIF_F(LRO) #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) #define NETIF_F_RXHASH __NETIF_F(RXHASH) #define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC) #define NETIF_F_SG __NETIF_F(SG) #define NETIF_F_TSO6 __NETIF_F(TSO6) #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) #define NETIF_F_TSO __NETIF_F(TSO) #define NETIF_F_UFO __NETIF_F(UFO) #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) #define NETIF_F_RXFCS __NETIF_F(RXFCS) #define NETIF_F_RXALL __NETIF_F(RXALL) #define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) #define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) #define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP) #define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT) #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) #define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) #define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP) #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) #define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL) #define NETIF_F_HW_TC __NETIF_F(HW_TC) #define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT) /* RHEL-7: stubs for UDP GSO */ #define NETIF_F_GSO_UDP_L4 0 #define SKB_GSO_UDP_L4 0 #define for_each_netdev_feature(mask_addr, bit) \ for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT) /* Features valid for ethtool to change */ /* = all defined minus driver/device-class-related */ #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) /* remember that ((t)1 << t_BITS) is undefined in C99 */ #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ ~NETIF_F_NEVER_CHANGE) /* Segmentation offload feature mask */ #define NETIF_F_GSO2_MASK (NETIF_F_GSO_GRE_CSUM|NETIF_F_GSO_UDP_TUNNEL_CSUM|\ NETIF_F_GSO_PARTIAL|NETIF_F_GSO_SCTP|\ NETIF_F_TSO_MANGLEID) #define NETIF_F_GSO_MASK ((__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) | \ NETIF_F_GSO2_MASK) #define NETIF_F_GSO2_SHIFT (NETIF_F_GSO_GRE_CSUM_BIT - \ (NETIF_F_GSO_LAST + 1 - NETIF_F_GSO_SHIFT)) /* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- * this would be contradictory */ #define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ NETIF_F_HW_CSUM) #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN | \ NETIF_F_TSO_MANGLEID) #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ NETIF_F_FSO) /* List of features with software fallbacks. */ #define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_UFO | \ NETIF_F_GSO_SCTP) /* * If one device supports one of these features, then enable them * for all in netdev_increment_features. */ #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ NETIF_F_SG | NETIF_F_HIGHDMA | \ NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) /* * If one device doesn't support one of these features, then disable it * for all in netdev_increment_features. */ #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) /* * If upper/master device has these features disabled, they must be disabled * on all lower/slave devices as well. */ #define NETIF_F_UPPER_DISABLES NETIF_F_LRO /* changeable features with no special hardware requirements */ #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) #define NETIF_F_GSO1_ENCAP_ALL (NETIF_F_GSO_GRE | \ NETIF_F_GSO_IPIP | \ NETIF_F_GSO_SIT | \ NETIF_F_GSO_UDP_TUNNEL) #define NETIF_F_GSO2_ENCAP_ALL (NETIF_F_GSO_GRE_CSUM | \ NETIF_F_GSO_UDP_TUNNEL_CSUM) #define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO1_ENCAP_ALL | \ NETIF_F_GSO2_ENCAP_ALL) #endif /* _LINUX_NETDEV_FEATURES_H */