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a59e2ecb MM |
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 | ||
c8f44aff | 13 | #include <linux/types.h> |
8681ef1f | 14 | #include <linux/bitops.h> |
3b89ea9c | 15 | #include <asm/byteorder.h> |
c8f44aff | 16 | |
a861a8b2 | 17 | typedef u64 netdev_features_t; |
c8f44aff | 18 | |
a19f2a6d MM |
19 | enum { |
20 | NETIF_F_SG_BIT, /* Scatter/gather IO. */ | |
21 | NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ | |
34324dc2 | 22 | __UNUSED_NETIF_F_1, |
a19f2a6d MM |
23 | NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ |
24 | NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ | |
25 | NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ | |
26 | NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ | |
f646968f PM |
27 | NETIF_F_HW_VLAN_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */ |
28 | NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */ | |
29 | NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ | |
a19f2a6d MM |
30 | NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ |
31 | NETIF_F_GSO_BIT, /* Enable software GSO. */ | |
32 | NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ | |
a59e2ecb | 33 | /* do not use LLTX in new drivers */ |
a19f2a6d MM |
34 | NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ |
35 | NETIF_F_GRO_BIT, /* Generic receive offload */ | |
36 | NETIF_F_LRO_BIT, /* large receive offload */ | |
37 | ||
38 | /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ | |
39 | NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ | |
40 | = NETIF_F_GSO_SHIFT, | |
a19f2a6d MM |
41 | NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ |
42 | NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ | |
cbc53e08 | 43 | NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ |
a19f2a6d MM |
44 | NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ |
45 | NETIF_F_FSO_BIT, /* ... FCoE segmentation */ | |
68c33163 | 46 | NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ |
4749c09c | 47 | NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ |
7e13318d TH |
48 | NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */ |
49 | NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */ | |
73136267 | 50 | NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ |
0f4f4ffa | 51 | NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ |
802ab55a AD |
52 | NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 |
53 | * in hardware and all other | |
54 | * headers in software. | |
55 | */ | |
e585f236 | 56 | NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ |
90017acc | 57 | NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */ |
c7ef8f0c | 58 | NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */ |
0c19f846 | 59 | NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */ |
83aa025f | 60 | NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */ |
73136267 | 61 | /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ |
83aa025f | 62 | NETIF_F_GSO_UDP_L4_BIT, |
a19f2a6d MM |
63 | |
64 | NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ | |
53692b1d | 65 | NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */ |
a19f2a6d MM |
66 | NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ |
67 | NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ | |
68 | NETIF_F_RXHASH_BIT, /* Receive hashing offload */ | |
69 | NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ | |
70 | NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ | |
71 | NETIF_F_LOOPBACK_BIT, /* Enable loopback */ | |
36eabda3 | 72 | NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ |
5e0c03c8 | 73 | NETIF_F_RXALL_BIT, /* Receive errored frames too */ |
4ada8db3 DM |
74 | NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */ |
75 | NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */ | |
76 | NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ | |
a6cc0cfa | 77 | NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ |
a19f2a6d | 78 | |
1c78c64e | 79 | NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */ |
c7ef8f0c SK |
80 | NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */ |
81 | NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */ | |
d764a122 | 82 | NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */ |
2342a851 | 83 | NETIF_F_HW_TLS_TX_BIT, /* Hardware TLS TX offload */ |
14136564 | 84 | NETIF_F_HW_TLS_RX_BIT, /* Hardware TLS RX offload */ |
1c78c64e | 85 | |
fb1f5f79 | 86 | NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */ |
e0be6bea | 87 | NETIF_F_HW_TLS_RECORD_BIT, /* Offload TLS record */ |
fb1f5f79 | 88 | |
a19f2a6d MM |
89 | /* |
90 | * Add your fresh new feature above and remember to update | |
91 | * netdev_features_strings[] in net/core/ethtool.c and maybe | |
92 | * some feature mask #defines below. Please also describe it | |
93 | * in Documentation/networking/netdev-features.txt. | |
94 | */ | |
a59e2ecb | 95 | |
a19f2a6d MM |
96 | /**/NETDEV_FEATURE_COUNT |
97 | }; | |
a59e2ecb | 98 | |
a19f2a6d MM |
99 | /* copy'n'paste compression ;) */ |
100 | #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) | |
101 | #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) | |
102 | ||
103 | #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) | |
104 | #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) | |
105 | #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) | |
106 | #define NETIF_F_FSO __NETIF_F(FSO) | |
107 | #define NETIF_F_GRO __NETIF_F(GRO) | |
fb1f5f79 | 108 | #define NETIF_F_GRO_HW __NETIF_F(GRO_HW) |
a19f2a6d MM |
109 | #define NETIF_F_GSO __NETIF_F(GSO) |
110 | #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) | |
111 | #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) | |
112 | #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) | |
f646968f PM |
113 | #define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) |
114 | #define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) | |
115 | #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) | |
a19f2a6d MM |
116 | #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) |
117 | #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) | |
118 | #define NETIF_F_LLTX __NETIF_F(LLTX) | |
119 | #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) | |
120 | #define NETIF_F_LRO __NETIF_F(LRO) | |
121 | #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) | |
122 | #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) | |
a19f2a6d MM |
123 | #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) |
124 | #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) | |
125 | #define NETIF_F_RXHASH __NETIF_F(RXHASH) | |
53692b1d | 126 | #define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC) |
a19f2a6d MM |
127 | #define NETIF_F_SG __NETIF_F(SG) |
128 | #define NETIF_F_TSO6 __NETIF_F(TSO6) | |
129 | #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) | |
130 | #define NETIF_F_TSO __NETIF_F(TSO) | |
a19f2a6d | 131 | #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) |
36eabda3 | 132 | #define NETIF_F_RXFCS __NETIF_F(RXFCS) |
5e0c03c8 | 133 | #define NETIF_F_RXALL __NETIF_F(RXALL) |
a362db3d | 134 | #define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) |
4749c09c | 135 | #define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) |
7e13318d TH |
136 | #define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4) |
137 | #define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6) | |
a362db3d | 138 | #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) |
4b28252c | 139 | #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) |
cbc53e08 | 140 | #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) |
802ab55a | 141 | #define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) |
e585f236 | 142 | #define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) |
90017acc | 143 | #define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP) |
c7ef8f0c | 144 | #define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP) |
0c19f846 | 145 | #define NETIF_F_GSO_UDP __NETIF_F(GSO_UDP) |
4ada8db3 DM |
146 | #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) |
147 | #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) | |
148 | #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) | |
a6cc0cfa | 149 | #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) |
1c78c64e | 150 | #define NETIF_F_HW_TC __NETIF_F(HW_TC) |
c7ef8f0c SK |
151 | #define NETIF_F_HW_ESP __NETIF_F(HW_ESP) |
152 | #define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM) | |
d764a122 | 153 | #define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT) |
e0be6bea | 154 | #define NETIF_F_HW_TLS_RECORD __NETIF_F(HW_TLS_RECORD) |
83aa025f | 155 | #define NETIF_F_GSO_UDP_L4 __NETIF_F(GSO_UDP_L4) |
2342a851 | 156 | #define NETIF_F_HW_TLS_TX __NETIF_F(HW_TLS_TX) |
14136564 | 157 | #define NETIF_F_HW_TLS_RX __NETIF_F(HW_TLS_RX) |
a59e2ecb | 158 | |
3b89ea9c HM |
159 | /* Finds the next feature with the highest number of the range of start till 0. |
160 | */ | |
161 | static inline int find_next_netdev_feature(u64 feature, unsigned long start) | |
162 | { | |
163 | /* like BITMAP_LAST_WORD_MASK() for u64 | |
164 | * this sets the most significant 64 - start to 0. | |
165 | */ | |
166 | feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1)); | |
167 | ||
168 | return fls64(feature) - 1; | |
169 | } | |
170 | ||
171 | /* This goes for the MSB to the LSB through the set feature bits, | |
172 | * mask_addr should be a u64 and bit an int | |
173 | */ | |
174 | #define for_each_netdev_feature(mask_addr, bit) \ | |
175 | for ((bit) = find_next_netdev_feature((mask_addr), \ | |
176 | NETDEV_FEATURE_COUNT); \ | |
177 | (bit) >= 0; \ | |
178 | (bit) = find_next_netdev_feature((mask_addr), (bit) - 1)) | |
fd867d51 | 179 | |
a59e2ecb MM |
180 | /* Features valid for ethtool to change */ |
181 | /* = all defined minus driver/device-class-related */ | |
182 | #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ | |
183 | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) | |
a19f2a6d MM |
184 | |
185 | /* remember that ((t)1 << t_BITS) is undefined in C99 */ | |
186 | #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ | |
187 | (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ | |
188 | ~NETIF_F_NEVER_CHANGE) | |
189 | ||
190 | /* Segmentation offload feature mask */ | |
191 | #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ | |
192 | __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) | |
a59e2ecb | 193 | |
c8cd0989 | 194 | /* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be |
a188222b TH |
195 | * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- |
196 | * this would be contradictory | |
197 | */ | |
c8cd0989 TH |
198 | #define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ |
199 | NETIF_F_HW_CSUM) | |
a59e2ecb | 200 | |
756ca874 AD |
201 | #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \ |
202 | NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID) | |
a59e2ecb MM |
203 | |
204 | #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ | |
205 | NETIF_F_FSO) | |
206 | ||
b1c20f0b | 207 | /* List of features with software fallbacks. */ |
d9d30adf | 208 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | \ |
90017acc | 209 | NETIF_F_GSO_SCTP) |
b1c20f0b | 210 | |
a59e2ecb MM |
211 | /* |
212 | * If one device supports one of these features, then enable them | |
213 | * for all in netdev_increment_features. | |
214 | */ | |
215 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
216 | NETIF_F_SG | NETIF_F_HIGHDMA | \ | |
7889cbee | 217 | NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) |
aafb3e98 | 218 | |
a59e2ecb MM |
219 | /* |
220 | * If one device doesn't support one of these features, then disable it | |
221 | * for all in netdev_increment_features. | |
222 | */ | |
223 | #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) | |
224 | ||
fd867d51 JW |
225 | /* |
226 | * If upper/master device has these features disabled, they must be disabled | |
227 | * on all lower/slave devices as well. | |
228 | */ | |
229 | #define NETIF_F_UPPER_DISABLES NETIF_F_LRO | |
230 | ||
a59e2ecb MM |
231 | /* changeable features with no special hardware requirements */ |
232 | #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) | |
233 | ||
2adb956b VY |
234 | #define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \ |
235 | NETIF_F_HW_VLAN_CTAG_RX | \ | |
236 | NETIF_F_HW_VLAN_CTAG_TX | \ | |
237 | NETIF_F_HW_VLAN_STAG_FILTER | \ | |
238 | NETIF_F_HW_VLAN_STAG_RX | \ | |
239 | NETIF_F_HW_VLAN_STAG_TX) | |
240 | ||
f6eec614 PS |
241 | #define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ |
242 | NETIF_F_GSO_GRE_CSUM | \ | |
7e13318d TH |
243 | NETIF_F_GSO_IPXIP4 | \ |
244 | NETIF_F_GSO_IPXIP6 | \ | |
f6eec614 | 245 | NETIF_F_GSO_UDP_TUNNEL | \ |
59b93b41 | 246 | NETIF_F_GSO_UDP_TUNNEL_CSUM) |
f6eec614 | 247 | |
a59e2ecb | 248 | #endif /* _LINUX_NETDEV_FEATURES_H */ |