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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_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 */
a59e2ecb 31 /* do not use LLTX in new drivers */
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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 */
cbc53e08 42 NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */
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43 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
44 NETIF_F_FSO_BIT, /* ... FCoE segmentation */
68c33163 45 NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */
4749c09c 46 NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */
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47 NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */
48 NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */
73136267 49 NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */
0f4f4ffa 50 NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */
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51 NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4
52 * in hardware and all other
53 * headers in software.
54 */
e585f236 55 NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */
90017acc 56 NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */
c7ef8f0c 57 NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */
73136267 58 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
c7ef8f0c 59 NETIF_F_GSO_ESP_BIT,
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60
61 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
53692b1d 62 NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
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63 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/
64 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */
65 NETIF_F_RXHASH_BIT, /* Receive hashing offload */
66 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */
67 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */
68 NETIF_F_LOOPBACK_BIT, /* Enable loopback */
36eabda3 69 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */
5e0c03c8 70 NETIF_F_RXALL_BIT, /* Receive errored frames too */
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71 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */
72 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */
73 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
a6cc0cfa 74 NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
a19f2a6d 75
1c78c64e 76 NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */
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77 NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */
78 NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */
1c78c64e 79
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80 /*
81 * Add your fresh new feature above and remember to update
82 * netdev_features_strings[] in net/core/ethtool.c and maybe
83 * some feature mask #defines below. Please also describe it
84 * in Documentation/networking/netdev-features.txt.
85 */
a59e2ecb 86
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87 /**/NETDEV_FEATURE_COUNT
88};
a59e2ecb 89
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90/* copy'n'paste compression ;) */
91#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))
92#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
93
94#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
95#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
96#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
97#define NETIF_F_FSO __NETIF_F(FSO)
98#define NETIF_F_GRO __NETIF_F(GRO)
99#define NETIF_F_GSO __NETIF_F(GSO)
100#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)
101#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)
102#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)
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103#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)
104#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)
105#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)
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106#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
107#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
108#define NETIF_F_LLTX __NETIF_F(LLTX)
109#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)
110#define NETIF_F_LRO __NETIF_F(LRO)
111#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
112#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
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113#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
114#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
115#define NETIF_F_RXHASH __NETIF_F(RXHASH)
53692b1d 116#define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC)
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117#define NETIF_F_SG __NETIF_F(SG)
118#define NETIF_F_TSO6 __NETIF_F(TSO6)
119#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)
120#define NETIF_F_TSO __NETIF_F(TSO)
121#define NETIF_F_UFO __NETIF_F(UFO)
122#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
36eabda3 123#define NETIF_F_RXFCS __NETIF_F(RXFCS)
5e0c03c8 124#define NETIF_F_RXALL __NETIF_F(RXALL)
a362db3d 125#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE)
4749c09c 126#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM)
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127#define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4)
128#define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6)
a362db3d 129#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)
4b28252c 130#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM)
cbc53e08 131#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID)
802ab55a 132#define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL)
e585f236 133#define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM)
90017acc 134#define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP)
c7ef8f0c 135#define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP)
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136#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)
137#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)
138#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
a6cc0cfa 139#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
1c78c64e 140#define NETIF_F_HW_TC __NETIF_F(HW_TC)
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141#define NETIF_F_HW_ESP __NETIF_F(HW_ESP)
142#define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM)
a59e2ecb 143
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144#define for_each_netdev_feature(mask_addr, bit) \
145 for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
fd867d51 146
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147/* Features valid for ethtool to change */
148/* = all defined minus driver/device-class-related */
149#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
150 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
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151
152/* remember that ((t)1 << t_BITS) is undefined in C99 */
153#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \
154 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
155 ~NETIF_F_NEVER_CHANGE)
156
157/* Segmentation offload feature mask */
158#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
159 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))
a59e2ecb 160
c8cd0989 161/* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be
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162 * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set--
163 * this would be contradictory
164 */
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165#define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
166 NETIF_F_HW_CSUM)
a59e2ecb 167
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168#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \
169 NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID)
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170
171#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
172 NETIF_F_FSO)
173
b1c20f0b 174/* List of features with software fallbacks. */
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175#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_UFO | \
176 NETIF_F_GSO_SCTP)
b1c20f0b 177
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178/*
179 * If one device supports one of these features, then enable them
180 * for all in netdev_increment_features.
181 */
182#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
183 NETIF_F_SG | NETIF_F_HIGHDMA | \
7889cbee 184 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
aafb3e98 185
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186/*
187 * If one device doesn't support one of these features, then disable it
188 * for all in netdev_increment_features.
189 */
190#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
191
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192/*
193 * If upper/master device has these features disabled, they must be disabled
194 * on all lower/slave devices as well.
195 */
196#define NETIF_F_UPPER_DISABLES NETIF_F_LRO
197
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198/* changeable features with no special hardware requirements */
199#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
200
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201#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \
202 NETIF_F_HW_VLAN_CTAG_RX | \
203 NETIF_F_HW_VLAN_CTAG_TX | \
204 NETIF_F_HW_VLAN_STAG_FILTER | \
205 NETIF_F_HW_VLAN_STAG_RX | \
206 NETIF_F_HW_VLAN_STAG_TX)
207
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208#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \
209 NETIF_F_GSO_GRE_CSUM | \
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210 NETIF_F_GSO_IPXIP4 | \
211 NETIF_F_GSO_IPXIP6 | \
f6eec614 212 NETIF_F_GSO_UDP_TUNNEL | \
59b93b41 213 NETIF_F_GSO_UDP_TUNNEL_CSUM)
f6eec614 214
a59e2ecb 215#endif /* _LINUX_NETDEV_FEATURES_H */