include/linux/netdev

/* [<][>][^][v][top][bottom][index][help] */
/*
 * 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_GRE_CSUM_BIT,       /* ... GRE with csum 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_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */
        NETIF_F_GSO_MPLS_BIT,           /* ... MPLS segmentation */
        /**/NETIF_F_GSO_LAST =          /* last bit, see GSO_MASK */
                NETIF_F_GSO_MPLS_BIT,

        NETIF_F_FCOE_CRC_BIT,           /* FCoE CRC32 */
        NETIF_F_SCTP_CSUM_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_HW_L2FW_DOFFLOAD_BIT,   /* Allow L2 Forwarding in Hardware */
        NETIF_F_BUSY_POLL_BIT,          /* Busy poll */

        /*
         * 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_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_CSUM       __NETIF_F(SCTP_CSUM)
#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_GSO_MPLS        __NETIF_F(GSO_MPLS)
#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)

/* 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_GSO_MASK        (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
                __NETIF_F_BIT(NETIF_F_GSO_SHIFT))

/* List of features with software fallbacks. */
#define NETIF_F_GSO_SOFTWARE    (NETIF_F_TSO | NETIF_F_TSO_ECN | \
                                 NETIF_F_TSO6 | NETIF_F_UFO)

#define NETIF_F_GEN_CSUM        NETIF_F_HW_CSUM
#define NETIF_F_V4_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
#define NETIF_F_V6_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
#define NETIF_F_ALL_CSUM        (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)

#define NETIF_F_ALL_TSO         (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)

#define NETIF_F_ALL_FCOE        (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
                                 NETIF_F_FSO)

/*
 * 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)

/* changeable features with no special hardware requirements */
#define NETIF_F_SOFT_FEATURES   (NETIF_F_GSO | NETIF_F_GRO)

#define NETIF_F_VLAN_FEATURES   (NETIF_F_HW_VLAN_CTAG_FILTER | \
                                 NETIF_F_HW_VLAN_CTAG_RX | \
                                 NETIF_F_HW_VLAN_CTAG_TX | \
                                 NETIF_F_HW_VLAN_STAG_FILTER | \
                                 NETIF_F_HW_VLAN_STAG_RX | \
                                 NETIF_F_HW_VLAN_STAG_TX)

#define NETIF_F_GSO_ENCAP_ALL   (NETIF_F_GSO_GRE |                      \
                                 NETIF_F_GSO_GRE_CSUM |                 \
                                 NETIF_F_GSO_IPIP |                     \
                                 NETIF_F_GSO_SIT |                      \
                                 NETIF_F_GSO_UDP_TUNNEL |               \
                                 NETIF_F_GSO_UDP_TUNNEL_CSUM |          \
                                 NETIF_F_GSO_MPLS)

#endif  /* _LINUX_NETDEV_FEATURES_H */
/* [<][>][^][v][top][bottom][index][help] */
root/include/linux/netdev_features.h

INCLUDED FROM
