Line data Source code
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/core/ethtool.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 till 0.
173 : */
174 0 : 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 0 : feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1));
180 :
181 0 : return fls64(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) - 1))
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 */
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