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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
13#include <linux/types.h>
14
15typedef u64 netdev_features_t;
16
17enum {
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_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */
43 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
44 NETIF_F_FSO_BIT, /* ... FCoE segmentation */
45 NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */
46 NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */
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 */
49 NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */
50 NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */
51 NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4
52 * in hardware and all other
53 * headers in software.
54 */
55 NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */
56 NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */
57 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
58 NETIF_F_GSO_SCTP_BIT,
59
60 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
61 NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
62 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/
63 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */
64 NETIF_F_RXHASH_BIT, /* Receive hashing offload */
65 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */
66 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */
67 NETIF_F_LOOPBACK_BIT, /* Enable loopback */
68 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */
69 NETIF_F_RXALL_BIT, /* Receive errored frames too */
70 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */
71 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */
72 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
73 NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
74 NETIF_F_BUSY_POLL_BIT, /* Busy poll */
75
76 NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */
77
78 /*
79 * Add your fresh new feature above and remember to update
80 * netdev_features_strings[] in net/core/ethtool.c and maybe
81 * some feature mask #defines below. Please also describe it
82 * in Documentation/networking/netdev-features.txt.
83 */
84
85 /**/NETDEV_FEATURE_COUNT
86};
87
88/* copy'n'paste compression ;) */
89#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))
90#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
91
92#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
93#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
94#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
95#define NETIF_F_FSO __NETIF_F(FSO)
96#define NETIF_F_GRO __NETIF_F(GRO)
97#define NETIF_F_GSO __NETIF_F(GSO)
98#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)
99#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)
100#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)
101#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)
102#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)
103#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)
104#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
105#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
106#define NETIF_F_LLTX __NETIF_F(LLTX)
107#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)
108#define NETIF_F_LRO __NETIF_F(LRO)
109#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
110#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
111#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
112#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
113#define NETIF_F_RXHASH __NETIF_F(RXHASH)
114#define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC)
115#define NETIF_F_SG __NETIF_F(SG)
116#define NETIF_F_TSO6 __NETIF_F(TSO6)
117#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)
118#define NETIF_F_TSO __NETIF_F(TSO)
119#define NETIF_F_UFO __NETIF_F(UFO)
120#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
121#define NETIF_F_RXFCS __NETIF_F(RXFCS)
122#define NETIF_F_RXALL __NETIF_F(RXALL)
123#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE)
124#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM)
125#define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4)
126#define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6)
127#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)
128#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM)
129#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID)
130#define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL)
131#define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM)
132#define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP)
133#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)
134#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)
135#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
136#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
137#define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL)
138#define NETIF_F_HW_TC __NETIF_F(HW_TC)
139
140#define for_each_netdev_feature(mask_addr, bit) \
141 for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
142
143/* Features valid for ethtool to change */
144/* = all defined minus driver/device-class-related */
145#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
146 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
147
148/* remember that ((t)1 << t_BITS) is undefined in C99 */
149#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \
150 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
151 ~NETIF_F_NEVER_CHANGE)
152
153/* Segmentation offload feature mask */
154#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
155 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))
156
157/* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be
158 * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set--
159 * this would be contradictory
160 */
161#define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
162 NETIF_F_HW_CSUM)
163
164#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \
165 NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID)
166
167#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
168 NETIF_F_FSO)
169
170/* List of features with software fallbacks. */
171#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_UFO | \
172 NETIF_F_GSO_SCTP)
173
174/*
175 * If one device supports one of these features, then enable them
176 * for all in netdev_increment_features.
177 */
178#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
179 NETIF_F_SG | NETIF_F_HIGHDMA | \
180 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
181
182/*
183 * If one device doesn't support one of these features, then disable it
184 * for all in netdev_increment_features.
185 */
186#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
187
188/*
189 * If upper/master device has these features disabled, they must be disabled
190 * on all lower/slave devices as well.
191 */
192#define NETIF_F_UPPER_DISABLES NETIF_F_LRO
193
194/* changeable features with no special hardware requirements */
195#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
196
197#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \
198 NETIF_F_HW_VLAN_CTAG_RX | \
199 NETIF_F_HW_VLAN_CTAG_TX | \
200 NETIF_F_HW_VLAN_STAG_FILTER | \
201 NETIF_F_HW_VLAN_STAG_RX | \
202 NETIF_F_HW_VLAN_STAG_TX)
203
204#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \
205 NETIF_F_GSO_GRE_CSUM | \
206 NETIF_F_GSO_IPXIP4 | \
207 NETIF_F_GSO_IPXIP6 | \
208 NETIF_F_GSO_UDP_TUNNEL | \
209 NETIF_F_GSO_UDP_TUNNEL_CSUM)
210
211#endif /* _LINUX_NETDEV_FEATURES_H */