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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
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13#include <linux/types.h>
14
a861a8b2 15typedef u64 netdev_features_t;
c8f44aff 16
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17enum {
18 NETIF_F_SG_BIT, /* Scatter/gather IO. */
19 NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */
34324dc2 20 __UNUSED_NETIF_F_1,
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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. */
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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 */
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28 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */
29 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */
30 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
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31 NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */
32 NETIF_F_GSO_BIT, /* Enable software GSO. */
33 NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */
a59e2ecb 34 /* do not use LLTX in new drivers */
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35 NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */
36 NETIF_F_GRO_BIT, /* Generic receive offload */
37 NETIF_F_LRO_BIT, /* large receive offload */
38
39 /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */
40 NETIF_F_TSO_BIT /* ... TCPv4 segmentation */
41 = NETIF_F_GSO_SHIFT,
42 NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */
43 NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */
44 NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */
45 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
46 NETIF_F_FSO_BIT, /* ... FCoE segmentation */
68c33163 47 NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */
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48 NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */
49 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
50 NETIF_F_GSO_UDP_TUNNEL_BIT,
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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 */
36eabda3 60 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */
5e0c03c8 61 NETIF_F_RXALL_BIT, /* Receive errored frames too */
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62
63 /*
64 * Add your fresh new feature above and remember to update
65 * netdev_features_strings[] in net/core/ethtool.c and maybe
66 * some feature mask #defines below. Please also describe it
67 * in Documentation/networking/netdev-features.txt.
68 */
a59e2ecb 69
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70 /**/NETDEV_FEATURE_COUNT
71};
a59e2ecb 72
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73/* copy'n'paste compression ;) */
74#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))
75#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
76
77#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
78#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
79#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
80#define NETIF_F_FSO __NETIF_F(FSO)
81#define NETIF_F_GRO __NETIF_F(GRO)
82#define NETIF_F_GSO __NETIF_F(GSO)
83#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)
84#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)
85#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)
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86#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)
87#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)
88#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)
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89#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)
90#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)
91#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
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92#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
93#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
94#define NETIF_F_LLTX __NETIF_F(LLTX)
95#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)
96#define NETIF_F_LRO __NETIF_F(LRO)
97#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
98#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
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99#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
100#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
101#define NETIF_F_RXHASH __NETIF_F(RXHASH)
102#define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM)
103#define NETIF_F_SG __NETIF_F(SG)
104#define NETIF_F_TSO6 __NETIF_F(TSO6)
105#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)
106#define NETIF_F_TSO __NETIF_F(TSO)
107#define NETIF_F_UFO __NETIF_F(UFO)
108#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
36eabda3 109#define NETIF_F_RXFCS __NETIF_F(RXFCS)
5e0c03c8 110#define NETIF_F_RXALL __NETIF_F(RXALL)
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111#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE)
112#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)
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113
114/* Features valid for ethtool to change */
115/* = all defined minus driver/device-class-related */
116#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
117 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
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118
119/* remember that ((t)1 << t_BITS) is undefined in C99 */
120#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \
121 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
122 ~NETIF_F_NEVER_CHANGE)
123
124/* Segmentation offload feature mask */
125#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
126 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))
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127
128/* List of features with software fallbacks. */
129#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
130 NETIF_F_TSO6 | NETIF_F_UFO)
131
34324dc2 132#define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM
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133#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
134#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
135#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
136
137#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
138
139#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
140 NETIF_F_FSO)
141
142/*
143 * If one device supports one of these features, then enable them
144 * for all in netdev_increment_features.
145 */
146#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
147 NETIF_F_SG | NETIF_F_HIGHDMA | \
148 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
149/*
150 * If one device doesn't support one of these features, then disable it
151 * for all in netdev_increment_features.
152 */
153#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
154
155/* changeable features with no special hardware requirements */
156#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
157
158#endif /* _LINUX_NETDEV_FEATURES_H */