1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Network device features. |
4 | */ |
5 | #ifndef _LINUX_NETDEV_FEATURES_H |
6 | #define _LINUX_NETDEV_FEATURES_H |
7 | |
8 | #include <linux/types.h> |
9 | #include <linux/bitops.h> |
10 | #include <asm/byteorder.h> |
11 | |
12 | typedef u64 netdev_features_t; |
13 | |
14 | enum { |
15 | NETIF_F_SG_BIT, /* Scatter/gather IO. */ |
16 | NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ |
17 | __UNUSED_NETIF_F_1, |
18 | NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ |
19 | NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ |
20 | NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ |
21 | NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ |
22 | NETIF_F_HW_VLAN_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */ |
23 | NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */ |
24 | NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ |
25 | NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ |
26 | NETIF_F_GSO_BIT, /* Enable software GSO. */ |
27 | NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ |
28 | /* do not use LLTX in new drivers */ |
29 | NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ |
30 | NETIF_F_GRO_BIT, /* Generic receive offload */ |
31 | NETIF_F_LRO_BIT, /* large receive offload */ |
32 | |
33 | /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ |
34 | NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ |
35 | = NETIF_F_GSO_SHIFT, |
36 | NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ |
37 | NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ |
38 | NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ |
39 | NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ |
40 | NETIF_F_FSO_BIT, /* ... FCoE segmentation */ |
41 | NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ |
42 | NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ |
43 | NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */ |
44 | NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */ |
45 | NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ |
46 | NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ |
47 | NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 |
48 | * in hardware and all other |
49 | * headers in software. |
50 | */ |
51 | NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ |
52 | NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */ |
53 | NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */ |
54 | NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */ |
55 | NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */ |
56 | NETIF_F_GSO_FRAGLIST_BIT, /* ... Fraglist GSO */ |
57 | /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ |
58 | NETIF_F_GSO_FRAGLIST_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 | |
75 | NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */ |
76 | NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */ |
77 | NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */ |
78 | NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */ |
79 | NETIF_F_HW_TLS_TX_BIT, /* Hardware TLS TX offload */ |
80 | NETIF_F_HW_TLS_RX_BIT, /* Hardware TLS RX offload */ |
81 | |
82 | NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */ |
83 | NETIF_F_HW_TLS_RECORD_BIT, /* Offload TLS record */ |
84 | NETIF_F_GRO_FRAGLIST_BIT, /* Fraglist GRO */ |
85 | |
86 | NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */ |
87 | NETIF_F_GRO_UDP_FWD_BIT, /* Allow UDP GRO for forwarding */ |
88 | |
89 | NETIF_F_HW_HSR_TAG_INS_BIT, /* Offload HSR tag insertion */ |
90 | NETIF_F_HW_HSR_TAG_RM_BIT, /* Offload HSR tag removal */ |
91 | NETIF_F_HW_HSR_FWD_BIT, /* Offload HSR forwarding */ |
92 | NETIF_F_HW_HSR_DUP_BIT, /* Offload HSR duplication */ |
93 | |
94 | /* |
95 | * Add your fresh new feature above and remember to update |
96 | * netdev_features_strings[] in net/ethtool/common.c and maybe |
97 | * some feature mask #defines below. Please also describe it |
98 | * in Documentation/networking/netdev-features.rst. |
99 | */ |
100 | |
101 | /**/NETDEV_FEATURE_COUNT |
102 | }; |
103 | |
104 | /* copy'n'paste compression ;) */ |
105 | #define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) |
106 | #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) |
107 | |
108 | #define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) |
109 | #define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) |
110 | #define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) |
111 | #define NETIF_F_FSO __NETIF_F(FSO) |
112 | #define NETIF_F_GRO __NETIF_F(GRO) |
113 | #define NETIF_F_GRO_HW __NETIF_F(GRO_HW) |
114 | #define NETIF_F_GSO __NETIF_F(GSO) |
115 | #define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) |
116 | #define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) |
117 | #define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) |
118 | #define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) |
119 | #define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) |
120 | #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) |
121 | #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) |
122 | #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) |
123 | #define NETIF_F_LLTX __NETIF_F(LLTX) |
124 | #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) |
125 | #define NETIF_F_LRO __NETIF_F(LRO) |
126 | #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) |
127 | #define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) |
128 | #define NETIF_F_NTUPLE __NETIF_F(NTUPLE) |
129 | #define NETIF_F_RXCSUM __NETIF_F(RXCSUM) |
130 | #define NETIF_F_RXHASH __NETIF_F(RXHASH) |
131 | #define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC) |
132 | #define NETIF_F_SG __NETIF_F(SG) |
133 | #define NETIF_F_TSO6 __NETIF_F(TSO6) |
134 | #define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) |
135 | #define NETIF_F_TSO __NETIF_F(TSO) |
136 | #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) |
137 | #define NETIF_F_RXFCS __NETIF_F(RXFCS) |
138 | #define NETIF_F_RXALL __NETIF_F(RXALL) |
139 | #define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) |
140 | #define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) |
141 | #define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4) |
142 | #define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6) |
143 | #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) |
144 | #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) |
145 | #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) |
146 | #define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) |
147 | #define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) |
148 | #define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP) |
149 | #define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP) |
150 | #define NETIF_F_GSO_UDP __NETIF_F(GSO_UDP) |
151 | #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) |
152 | #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) |
153 | #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) |
154 | #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) |
155 | #define NETIF_F_HW_TC __NETIF_F(HW_TC) |
156 | #define NETIF_F_HW_ESP __NETIF_F(HW_ESP) |
157 | #define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM) |
158 | #define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT) |
159 | #define NETIF_F_HW_TLS_RECORD __NETIF_F(HW_TLS_RECORD) |
160 | #define NETIF_F_GSO_UDP_L4 __NETIF_F(GSO_UDP_L4) |
161 | #define NETIF_F_HW_TLS_TX __NETIF_F(HW_TLS_TX) |
162 | #define NETIF_F_HW_TLS_RX __NETIF_F(HW_TLS_RX) |
163 | #define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST) |
164 | #define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST) |
165 | #define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC) |
166 | #define NETIF_F_GRO_UDP_FWD __NETIF_F(GRO_UDP_FWD) |
167 | #define NETIF_F_HW_HSR_TAG_INS __NETIF_F(HW_HSR_TAG_INS) |
168 | #define NETIF_F_HW_HSR_TAG_RM __NETIF_F(HW_HSR_TAG_RM) |
169 | #define NETIF_F_HW_HSR_FWD __NETIF_F(HW_HSR_FWD) |
170 | #define NETIF_F_HW_HSR_DUP __NETIF_F(HW_HSR_DUP) |
171 | |
172 | /* Finds the next feature with the highest number of the range of start-1 till 0. |
173 | */ |
174 | static inline int find_next_netdev_feature(u64 feature, unsigned long start) |
175 | { |
176 | /* like BITMAP_LAST_WORD_MASK() for u64 |
177 | * this sets the most significant 64 - start to 0. |
178 | */ |
179 | feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1)); |
180 | |
181 | return fls64(x: feature) - 1; |
182 | } |
183 | |
184 | /* This goes for the MSB to the LSB through the set feature bits, |
185 | * mask_addr should be a u64 and bit an int |
186 | */ |
187 | #define for_each_netdev_feature(mask_addr, bit) \ |
188 | for ((bit) = find_next_netdev_feature((mask_addr), \ |
189 | NETDEV_FEATURE_COUNT); \ |
190 | (bit) >= 0; \ |
191 | (bit) = find_next_netdev_feature((mask_addr), (bit))) |
192 | |
193 | /* Features valid for ethtool to change */ |
194 | /* = all defined minus driver/device-class-related */ |
195 | #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ |
196 | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) |
197 | |
198 | /* remember that ((t)1 << t_BITS) is undefined in C99 */ |
199 | #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ |
200 | (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ |
201 | ~NETIF_F_NEVER_CHANGE) |
202 | |
203 | /* Segmentation offload feature mask */ |
204 | #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ |
205 | __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) |
206 | |
207 | /* List of IP checksum features. Note that NETIF_F_HW_CSUM should not be |
208 | * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- |
209 | * this would be contradictory |
210 | */ |
211 | #define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ |
212 | NETIF_F_HW_CSUM) |
213 | |
214 | #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \ |
215 | NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID) |
216 | |
217 | #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ |
218 | NETIF_F_FSO) |
219 | |
220 | /* List of features with software fallbacks. */ |
221 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_GSO_SCTP | \ |
222 | NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_FRAGLIST) |
223 | |
224 | /* |
225 | * If one device supports one of these features, then enable them |
226 | * for all in netdev_increment_features. |
227 | */ |
228 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ |
229 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
230 | NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) |
231 | |
232 | /* |
233 | * If one device doesn't support one of these features, then disable it |
234 | * for all in netdev_increment_features. |
235 | */ |
236 | #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) |
237 | |
238 | /* |
239 | * If upper/master device has these features disabled, they must be disabled |
240 | * on all lower/slave devices as well. |
241 | */ |
242 | #define NETIF_F_UPPER_DISABLES NETIF_F_LRO |
243 | |
244 | /* changeable features with no special hardware requirements */ |
245 | #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) |
246 | |
247 | /* Changeable features with no special hardware requirements that defaults to off. */ |
248 | #define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_FRAGLIST | NETIF_F_GRO_UDP_FWD) |
249 | |
250 | #define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \ |
251 | NETIF_F_HW_VLAN_CTAG_RX | \ |
252 | NETIF_F_HW_VLAN_CTAG_TX | \ |
253 | NETIF_F_HW_VLAN_STAG_FILTER | \ |
254 | NETIF_F_HW_VLAN_STAG_RX | \ |
255 | NETIF_F_HW_VLAN_STAG_TX) |
256 | |
257 | #define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ |
258 | NETIF_F_GSO_GRE_CSUM | \ |
259 | NETIF_F_GSO_IPXIP4 | \ |
260 | NETIF_F_GSO_IPXIP6 | \ |
261 | NETIF_F_GSO_UDP_TUNNEL | \ |
262 | NETIF_F_GSO_UDP_TUNNEL_CSUM) |
263 | |
264 | #endif /* _LINUX_NETDEV_FEATURES_H */ |
265 | |