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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Network device features.4 */5#ifndef _LINUX_NETDEV_FEATURES_H6#define _LINUX_NETDEV_FEATURES_H7 8#include <linux/types.h>9#include <linux/bitops.h>10#include <asm/byteorder.h>11 12typedef u64 netdev_features_t;13 14enum {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 __UNUSED_NETIF_F_12,28 __UNUSED_NETIF_F_13,29 NETIF_F_GRO_BIT, /* Generic receive offload */30 NETIF_F_LRO_BIT, /* large receive offload */31 32 /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */33 NETIF_F_TSO_BIT /* ... TCPv4 segmentation */34 = NETIF_F_GSO_SHIFT,35 NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */36 NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */37 NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */38 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */39 NETIF_F_FSO_BIT, /* ... FCoE segmentation */40 NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */41 NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */42 NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */43 NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */44 NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */45 NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */46 NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L447 * in hardware and all other48 * headers in software.49 */50 NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */51 NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */52 NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */53 NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */54 NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */55 NETIF_F_GSO_FRAGLIST_BIT, /* ... Fraglist GSO */56 /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */57 NETIF_F_GSO_FRAGLIST_BIT,58 59 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */60 NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */61 __UNUSED_NETIF_F_37,62 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */63 NETIF_F_RXHASH_BIT, /* Receive hashing offload */64 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */65 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */66 NETIF_F_LOOPBACK_BIT, /* Enable loopback */67 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */68 NETIF_F_RXALL_BIT, /* Receive errored frames too */69 NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */70 NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */71 NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */72 NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */73 74 NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */75 NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */76 NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */77 NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */78 NETIF_F_HW_TLS_TX_BIT, /* Hardware TLS TX offload */79 NETIF_F_HW_TLS_RX_BIT, /* Hardware TLS RX offload */80 81 NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */82 NETIF_F_HW_TLS_RECORD_BIT, /* Offload TLS record */83 NETIF_F_GRO_FRAGLIST_BIT, /* Fraglist GRO */84 85 NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */86 NETIF_F_GRO_UDP_FWD_BIT, /* Allow UDP GRO for forwarding */87 88 NETIF_F_HW_HSR_TAG_INS_BIT, /* Offload HSR tag insertion */89 NETIF_F_HW_HSR_TAG_RM_BIT, /* Offload HSR tag removal */90 NETIF_F_HW_HSR_FWD_BIT, /* Offload HSR forwarding */91 NETIF_F_HW_HSR_DUP_BIT, /* Offload HSR duplication */92 93 /*94 * Add your fresh new feature above and remember to update95 * netdev_features_strings[] in net/ethtool/common.c and maybe96 * some feature mask #defines below. Please also describe it97 * in Documentation/networking/netdev-features.rst.98 */99 100 /**/NETDEV_FEATURE_COUNT101};102 103/* copy'n'paste compression ;) */104#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))105#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)106 107#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)108#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)109#define NETIF_F_FSO __NETIF_F(FSO)110#define NETIF_F_GRO __NETIF_F(GRO)111#define NETIF_F_GRO_HW __NETIF_F(GRO_HW)112#define NETIF_F_GSO __NETIF_F(GSO)113#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)114#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)115#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)116#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)117#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)118#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)119#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)120#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)121#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)122#define NETIF_F_LRO __NETIF_F(LRO)123#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)124#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)125#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)126#define NETIF_F_RXHASH __NETIF_F(RXHASH)127#define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC)128#define NETIF_F_SG __NETIF_F(SG)129#define NETIF_F_TSO6 __NETIF_F(TSO6)130#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)131#define NETIF_F_TSO __NETIF_F(TSO)132#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)133#define NETIF_F_RXFCS __NETIF_F(RXFCS)134#define NETIF_F_RXALL __NETIF_F(RXALL)135#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE)136#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM)137#define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4)138#define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6)139#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)140#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM)141#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID)142#define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL)143#define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM)144#define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP)145#define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP)146#define NETIF_F_GSO_UDP __NETIF_F(GSO_UDP)147#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)148#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)149#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)150#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)151#define NETIF_F_HW_TC __NETIF_F(HW_TC)152#define NETIF_F_HW_ESP __NETIF_F(HW_ESP)153#define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM)154#define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT)155#define NETIF_F_HW_TLS_RECORD __NETIF_F(HW_TLS_RECORD)156#define NETIF_F_GSO_UDP_L4 __NETIF_F(GSO_UDP_L4)157#define NETIF_F_HW_TLS_TX __NETIF_F(HW_TLS_TX)158#define NETIF_F_HW_TLS_RX __NETIF_F(HW_TLS_RX)159#define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST)160#define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST)161#define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC)162#define NETIF_F_GRO_UDP_FWD __NETIF_F(GRO_UDP_FWD)163#define NETIF_F_HW_HSR_TAG_INS __NETIF_F(HW_HSR_TAG_INS)164#define NETIF_F_HW_HSR_TAG_RM __NETIF_F(HW_HSR_TAG_RM)165#define NETIF_F_HW_HSR_FWD __NETIF_F(HW_HSR_FWD)166#define NETIF_F_HW_HSR_DUP __NETIF_F(HW_HSR_DUP)167 168/* Finds the next feature with the highest number of the range of start-1 till 0.169 */170static inline int find_next_netdev_feature(u64 feature, unsigned long start)171{172 /* like BITMAP_LAST_WORD_MASK() for u64173 * this sets the most significant 64 - start to 0.174 */175 feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1));176 177 return fls64(feature) - 1;178}179 180/* This goes for the MSB to the LSB through the set feature bits,181 * mask_addr should be a u64 and bit an int182 */183#define for_each_netdev_feature(mask_addr, bit) \184 for ((bit) = find_next_netdev_feature((mask_addr), \185 NETDEV_FEATURE_COUNT); \186 (bit) >= 0; \187 (bit) = find_next_netdev_feature((mask_addr), (bit)))188 189/* Features valid for ethtool to change */190/* = all defined minus driver/device-class-related */191#define NETIF_F_NEVER_CHANGE NETIF_F_VLAN_CHALLENGED192 193/* remember that ((t)1 << t_BITS) is undefined in C99 */194#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \195 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \196 ~NETIF_F_NEVER_CHANGE)197 198/* Segmentation offload feature mask */199#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \200 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))201 202/* List of IP checksum features. Note that NETIF_F_HW_CSUM should not be203 * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set--204 * this would be contradictory205 */206#define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \207 NETIF_F_HW_CSUM)208 209#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \210 NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID)211 212/* List of features with software fallbacks. */213#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_GSO_SCTP | \214 NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_FRAGLIST)215 216/*217 * If one device supports one of these features, then enable them218 * for all in netdev_increment_features.219 */220#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \221 NETIF_F_SG | NETIF_F_HIGHDMA | \222 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)223 224/*225 * If one device doesn't support one of these features, then disable it226 * for all in netdev_increment_features.227 */228#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)229 230/*231 * If upper/master device has these features disabled, they must be disabled232 * on all lower/slave devices as well.233 */234#define NETIF_F_UPPER_DISABLES NETIF_F_LRO235 236/* changeable features with no special hardware requirements */237#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)238 239/* Changeable features with no special hardware requirements that defaults to off. */240#define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_FRAGLIST | NETIF_F_GRO_UDP_FWD)241 242#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \243 NETIF_F_HW_VLAN_CTAG_RX | \244 NETIF_F_HW_VLAN_CTAG_TX | \245 NETIF_F_HW_VLAN_STAG_FILTER | \246 NETIF_F_HW_VLAN_STAG_RX | \247 NETIF_F_HW_VLAN_STAG_TX)248 249#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \250 NETIF_F_GSO_GRE_CSUM | \251 NETIF_F_GSO_IPXIP4 | \252 NETIF_F_GSO_IPXIP6 | \253 NETIF_F_GSO_UDP_TUNNEL | \254 NETIF_F_GSO_UDP_TUNNEL_CSUM)255 256#endif /* _LINUX_NETDEV_FEATURES_H */257