91 lines
3.9 KiB
C
91 lines
3.9 KiB
C
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/*
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* Network device features.
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_NETDEV_FEATURES_H
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#define _LINUX_NETDEV_FEATURES_H
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/* Net device feature bits; if you change something,
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* also update netdev_features_strings[] in ethtool.c */
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#define NETIF_F_SG 1 /* Scatter/gather IO. */
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#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
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#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
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#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
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#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
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#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
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#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
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#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
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#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
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#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
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#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
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#define NETIF_F_GSO 2048 /* Enable software GSO. */
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#define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
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/* do not use LLTX in new drivers */
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#define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
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#define NETIF_F_GRO 16384 /* Generic receive offload */
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#define NETIF_F_LRO 32768 /* large receive offload */
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/* the GSO_MASK reserves bits 16 through 23 */
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#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
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#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
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#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
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#define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
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#define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
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#define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */
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#define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */
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#define NETIF_F_LOOPBACK (1 << 31) /* Enable loopback */
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/* Segmentation offload features */
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#define NETIF_F_GSO_SHIFT 16
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#define NETIF_F_GSO_MASK 0x00ff0000
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#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
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#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
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#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
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#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
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#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
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#define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
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/* Features valid for ethtool to change */
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/* = all defined minus driver/device-class-related */
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#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
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NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
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#define NETIF_F_ETHTOOL_BITS (0xff3fffff & ~NETIF_F_NEVER_CHANGE)
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/* List of features with software fallbacks. */
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#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
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NETIF_F_TSO6 | NETIF_F_UFO)
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#define NETIF_F_GEN_CSUM (NETIF_F_HW_CSUM | NETIF_F_NO_CSUM)
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#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
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#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
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#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
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#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
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#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
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NETIF_F_FSO)
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/*
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* If one device supports one of these features, then enable them
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* for all in netdev_increment_features.
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*/
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#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
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NETIF_F_SG | NETIF_F_HIGHDMA | \
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NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
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/*
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* If one device doesn't support one of these features, then disable it
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* for all in netdev_increment_features.
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*/
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#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
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/* changeable features with no special hardware requirements */
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#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
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#endif /* _LINUX_NETDEV_FEATURES_H */
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