include/linux/netdev_features.h

   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 #include <linux/types.h>
  14
  15 typedef u64 netdev_features_t;
  16
  17 enum {
  18         NETIF_F_SG_BIT,                 /* Scatter/gather IO. */
  19         NETIF_F_IP_CSUM_BIT,            /* Can checksum TCP/UDP over IPv4. */
  20         __UNUSED_NETIF_F_1,
  21         NETIF_F_HW_CSUM_BIT,            /* Can checksum all the packets. */
  22         NETIF_F_IPV6_CSUM_BIT,          /* Can checksum TCP/UDP over IPV6 */
  23         NETIF_F_HIGHDMA_BIT,            /* Can DMA to high memory. */
  24         NETIF_F_FRAGLIST_BIT,           /* Scatter/gather IO. */
  25         NETIF_F_HW_VLAN_CTAG_TX_BIT,    /* Transmit VLAN CTAG HW acceleration */
  26         NETIF_F_HW_VLAN_CTAG_RX_BIT,    /* Receive VLAN CTAG HW acceleration */
  27         NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */
  28         NETIF_F_VLAN_CHALLENGED_BIT,    /* Device cannot handle VLAN packets */
  29         NETIF_F_GSO_BIT,                /* Enable software GSO. */
  30         NETIF_F_LLTX_BIT,               /* LockLess TX - deprecated. Please */
  31                                         /* do not use LLTX in new drivers */
  32         NETIF_F_NETNS_LOCAL_BIT,        /* Does not change network namespaces */
  33         NETIF_F_GRO_BIT,                /* Generic receive offload */
  34         NETIF_F_LRO_BIT,                /* large receive offload */
  35
  36         /**/NETIF_F_GSO_SHIFT,          /* keep the order of SKB_GSO_* bits */
  37         NETIF_F_TSO_BIT                 /* ... TCPv4 segmentation */
  38                 = NETIF_F_GSO_SHIFT,
  39         NETIF_F_UFO_BIT,                /* ... UDPv4 fragmentation */
  40         NETIF_F_GSO_ROBUST_BIT,         /* ... ->SKB_GSO_DODGY */
  41         NETIF_F_TSO_ECN_BIT,            /* ... TCP ECN support */
  42         NETIF_F_TSO6_BIT,               /* ... TCPv6 segmentation */
  43         NETIF_F_FSO_BIT,                /* ... FCoE segmentation */
  44         NETIF_F_GSO_GRE_BIT,            /* ... GRE with TSO */
  45         NETIF_F_GSO_IPIP_BIT,           /* ... IPIP tunnel with TSO */
  46         NETIF_F_GSO_SIT_BIT,            /* ... SIT tunnel with TSO */
  47         NETIF_F_GSO_UDP_TUNNEL_BIT,     /* ... UDP TUNNEL with TSO */
  48         NETIF_F_GSO_MPLS_BIT,           /* ... MPLS segmentation */
  49         /**/NETIF_F_GSO_LAST =          /* last bit, see GSO_MASK */
  50                 NETIF_F_GSO_MPLS_BIT,
  51
  52         NETIF_F_FCOE_CRC_BIT,           /* FCoE CRC32 */
  53         NETIF_F_SCTP_CSUM_BIT,          /* SCTP checksum offload */
  54         NETIF_F_FCOE_MTU_BIT,           /* Supports max FCoE MTU, 2158 bytes*/
  55         NETIF_F_NTUPLE_BIT,             /* N-tuple filters supported */
  56         NETIF_F_RXHASH_BIT,             /* Receive hashing offload */
  57         NETIF_F_RXCSUM_BIT,             /* Receive checksumming offload */
  58         NETIF_F_NOCACHE_COPY_BIT,       /* Use no-cache copyfromuser */
  59         NETIF_F_LOOPBACK_BIT,           /* Enable loopback */
  60         NETIF_F_RXFCS_BIT,              /* Append FCS to skb pkt data */
  61         NETIF_F_RXALL_BIT,              /* Receive errored frames too */
  62         NETIF_F_HW_VLAN_STAG_TX_BIT,    /* Transmit VLAN STAG HW acceleration */
  63         NETIF_F_HW_VLAN_STAG_RX_BIT,    /* Receive VLAN STAG HW acceleration */
  64         NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
  65         NETIF_F_HW_L2FW_DOFFLOAD_BIT,   /* Allow L2 Forwarding in Hardware */
  66         NETIF_F_BUSY_POLL_BIT,          /* Busy poll */
  67
  68         /*
  69          * Add your fresh new feature above and remember to update
  70          * netdev_features_strings[] in net/core/ethtool.c and maybe
  71          * some feature mask #defines below. Please also describe it
  72          * in Documentation/networking/netdev-features.txt.
  73          */
  74
  75         /**/NETDEV_FEATURE_COUNT
  76 };
  77
  78 /* copy'n'paste compression ;) */
  79 #define __NETIF_F_BIT(bit)      ((netdev_features_t)1 << (bit))
  80 #define __NETIF_F(name)         __NETIF_F_BIT(NETIF_F_##name##_BIT)
  81
  82 #define NETIF_F_FCOE_CRC        __NETIF_F(FCOE_CRC)
  83 #define NETIF_F_FCOE_MTU        __NETIF_F(FCOE_MTU)
  84 #define NETIF_F_FRAGLIST        __NETIF_F(FRAGLIST)
  85 #define NETIF_F_FSO             __NETIF_F(FSO)
  86 #define NETIF_F_GRO             __NETIF_F(GRO)
  87 #define NETIF_F_GSO             __NETIF_F(GSO)
  88 #define NETIF_F_GSO_ROBUST      __NETIF_F(GSO_ROBUST)
  89 #define NETIF_F_HIGHDMA         __NETIF_F(HIGHDMA)
  90 #define NETIF_F_HW_CSUM         __NETIF_F(HW_CSUM)
  91 #define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)
  92 #define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)
  93 #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)
  94 #define NETIF_F_IP_CSUM         __NETIF_F(IP_CSUM)
  95 #define NETIF_F_IPV6_CSUM       __NETIF_F(IPV6_CSUM)
  96 #define NETIF_F_LLTX            __NETIF_F(LLTX)
  97 #define NETIF_F_LOOPBACK        __NETIF_F(LOOPBACK)
  98 #define NETIF_F_LRO             __NETIF_F(LRO)
  99 #define NETIF_F_NETNS_LOCAL     __NETIF_F(NETNS_LOCAL)
 100 #define NETIF_F_NOCACHE_COPY    __NETIF_F(NOCACHE_COPY)
 101 #define NETIF_F_NTUPLE          __NETIF_F(NTUPLE)
 102 #define NETIF_F_RXCSUM          __NETIF_F(RXCSUM)
 103 #define NETIF_F_RXHASH          __NETIF_F(RXHASH)
 104 #define NETIF_F_SCTP_CSUM       __NETIF_F(SCTP_CSUM)
 105 #define NETIF_F_SG              __NETIF_F(SG)
 106 #define NETIF_F_TSO6            __NETIF_F(TSO6)
 107 #define NETIF_F_TSO_ECN         __NETIF_F(TSO_ECN)
 108 #define NETIF_F_TSO             __NETIF_F(TSO)
 109 #define NETIF_F_UFO             __NETIF_F(UFO)
 110 #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
 111 #define NETIF_F_RXFCS           __NETIF_F(RXFCS)
 112 #define NETIF_F_RXALL           __NETIF_F(RXALL)
 113 #define NETIF_F_GSO_GRE         __NETIF_F(GSO_GRE)
 114 #define NETIF_F_GSO_IPIP        __NETIF_F(GSO_IPIP)
 115 #define NETIF_F_GSO_SIT         __NETIF_F(GSO_SIT)
 116 #define NETIF_F_GSO_UDP_TUNNEL  __NETIF_F(GSO_UDP_TUNNEL)
 117 #define NETIF_F_GSO_MPLS        __NETIF_F(GSO_MPLS)
 118 #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)
 119 #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)
 120 #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
 121 #define NETIF_F_HW_L2FW_DOFFLOAD        __NETIF_F(HW_L2FW_DOFFLOAD)
 122 #define NETIF_F_BUSY_POLL       __NETIF_F(BUSY_POLL)
 123
 124 /* Features valid for ethtool to change */
 125 /* = all defined minus driver/device-class-related */
 126 #define NETIF_F_NEVER_CHANGE    (NETIF_F_VLAN_CHALLENGED | \
 127                                  NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
 128
 129 /* remember that ((t)1 << t_BITS) is undefined in C99 */
 130 #define NETIF_F_ETHTOOL_BITS    ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \
 131                 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
 132                 ~NETIF_F_NEVER_CHANGE)
 133
 134 /* Segmentation offload feature mask */
 135 #define NETIF_F_GSO_MASK        (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
 136                 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))
 137
 138 /* List of features with software fallbacks. */
 139 #define NETIF_F_GSO_SOFTWARE    (NETIF_F_TSO | NETIF_F_TSO_ECN | \
 140                                  NETIF_F_TSO6 | NETIF_F_UFO)
 141
 142 #define NETIF_F_GEN_CSUM        NETIF_F_HW_CSUM
 143 #define NETIF_F_V4_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
 144 #define NETIF_F_V6_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
 145 #define NETIF_F_ALL_CSUM        (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
 146
 147 #define NETIF_F_ALL_TSO         (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
 148
 149 #define NETIF_F_ALL_FCOE        (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
 150                                  NETIF_F_FSO)
 151
 152 /*
 153  * If one device supports one of these features, then enable them
 154  * for all in netdev_increment_features.
 155  */
 156 #define NETIF_F_ONE_FOR_ALL     (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
 157                                  NETIF_F_SG | NETIF_F_HIGHDMA |         \
 158                                  NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
 159 /*
 160  * If one device doesn't support one of these features, then disable it
 161  * for all in netdev_increment_features.
 162  */
 163 #define NETIF_F_ALL_FOR_ALL     (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
 164
 165 /* changeable features with no special hardware requirements */
 166 #define NETIF_F_SOFT_FEATURES   (NETIF_F_GSO | NETIF_F_GRO)
 167
 168 #define NETIF_F_VLAN_FEATURES   (NETIF_F_HW_VLAN_CTAG_FILTER | \
 169                                  NETIF_F_HW_VLAN_CTAG_RX | \
 170                                  NETIF_F_HW_VLAN_CTAG_TX | \
 171                                  NETIF_F_HW_VLAN_STAG_FILTER | \
 172                                  NETIF_F_HW_VLAN_STAG_RX | \
 173                                  NETIF_F_HW_VLAN_STAG_TX)
 174
 175 #endif  /* _LINUX_NETDEV_FEATURES_H */