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Diffstat (limited to '')
| -rw-r--r-- | include/linux/netdev_features.h | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h new file mode 100644 index 000000000..e2a92697a --- /dev/null +++ b/include/linux/netdev_features.h @@ -0,0 +1,253 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Network device features. + */ +#ifndef _LINUX_NETDEV_FEATURES_H +#define _LINUX_NETDEV_FEATURES_H + +#include <linux/types.h> +#include <linux/bitops.h> +#include <asm/byteorder.h> + +typedef u64 netdev_features_t; + +enum { + NETIF_F_SG_BIT, /* Scatter/gather IO. */ + NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */ + __UNUSED_NETIF_F_1, + NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */ + NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */ + NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */ + NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */ + NETIF_F_HW_VLAN_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */ + NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */ + NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ + NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ + NETIF_F_GSO_BIT, /* Enable software GSO. */ + NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ + /* do not use LLTX in new drivers */ + NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ + NETIF_F_GRO_BIT, /* Generic receive offload */ + NETIF_F_LRO_BIT, /* large receive offload */ + + /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */ + NETIF_F_TSO_BIT /* ... TCPv4 segmentation */ + = NETIF_F_GSO_SHIFT, + NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ + NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ + NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ + NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ + NETIF_F_FSO_BIT, /* ... FCoE segmentation */ + NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ + NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ + NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */ + NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */ + NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ + NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ + NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 + * in hardware and all other + * headers in software. + */ + NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ + NETIF_F_GSO_SCTP_BIT, /* ... SCTP fragmentation */ + NETIF_F_GSO_ESP_BIT, /* ... ESP with TSO */ + NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */ + NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */ + NETIF_F_GSO_FRAGLIST_BIT, /* ... Fraglist GSO */ + /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ + NETIF_F_GSO_FRAGLIST_BIT, + + NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ + NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */ + NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/ + NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */ + NETIF_F_RXHASH_BIT, /* Receive hashing offload */ + NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */ + NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */ + NETIF_F_LOOPBACK_BIT, /* Enable loopback */ + NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */ + NETIF_F_RXALL_BIT, /* Receive errored frames too */ + NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */ + NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */ + NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ + NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ + + NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */ + NETIF_F_HW_ESP_BIT, /* Hardware ESP transformation offload */ + NETIF_F_HW_ESP_TX_CSUM_BIT, /* ESP with TX checksum offload */ + NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */ + NETIF_F_HW_TLS_TX_BIT, /* Hardware TLS TX offload */ + NETIF_F_HW_TLS_RX_BIT, /* Hardware TLS RX offload */ + + NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */ + NETIF_F_HW_TLS_RECORD_BIT, /* Offload TLS record */ + NETIF_F_GRO_FRAGLIST_BIT, /* Fraglist GRO */ + + NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */ + + /* + * Add your fresh new feature above and remember to update + * netdev_features_strings[] in net/ethtool/common.c and maybe + * some feature mask #defines below. Please also describe it + * in Documentation/networking/netdev-features.rst. + */ + + /**/NETDEV_FEATURE_COUNT +}; + +/* copy'n'paste compression ;) */ +#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) +#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT) + +#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) +#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU) +#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST) +#define NETIF_F_FSO __NETIF_F(FSO) +#define NETIF_F_GRO __NETIF_F(GRO) +#define NETIF_F_GRO_HW __NETIF_F(GRO_HW) +#define NETIF_F_GSO __NETIF_F(GSO) +#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST) +#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA) +#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM) +#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER) +#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX) +#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) +#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) +#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) +#define NETIF_F_LLTX __NETIF_F(LLTX) +#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) +#define NETIF_F_LRO __NETIF_F(LRO) +#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) +#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY) +#define NETIF_F_NTUPLE __NETIF_F(NTUPLE) +#define NETIF_F_RXCSUM __NETIF_F(RXCSUM) +#define NETIF_F_RXHASH __NETIF_F(RXHASH) +#define NETIF_F_SCTP_CRC __NETIF_F(SCTP_CRC) +#define NETIF_F_SG __NETIF_F(SG) +#define NETIF_F_TSO6 __NETIF_F(TSO6) +#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN) +#define NETIF_F_TSO __NETIF_F(TSO) +#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) +#define NETIF_F_RXFCS __NETIF_F(RXFCS) +#define NETIF_F_RXALL __NETIF_F(RXALL) +#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) +#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) +#define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4) +#define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6) +#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) +#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) +#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) +#define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) +#define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) +#define NETIF_F_GSO_SCTP __NETIF_F(GSO_SCTP) +#define NETIF_F_GSO_ESP __NETIF_F(GSO_ESP) +#define NETIF_F_GSO_UDP __NETIF_F(GSO_UDP) +#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) +#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) +#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX) +#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD) +#define NETIF_F_HW_TC __NETIF_F(HW_TC) +#define NETIF_F_HW_ESP __NETIF_F(HW_ESP) +#define NETIF_F_HW_ESP_TX_CSUM __NETIF_F(HW_ESP_TX_CSUM) +#define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT) +#define NETIF_F_HW_TLS_RECORD __NETIF_F(HW_TLS_RECORD) +#define NETIF_F_GSO_UDP_L4 __NETIF_F(GSO_UDP_L4) +#define NETIF_F_HW_TLS_TX __NETIF_F(HW_TLS_TX) +#define NETIF_F_HW_TLS_RX __NETIF_F(HW_TLS_RX) +#define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST) +#define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST) +#define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC) + +/* Finds the next feature with the highest number of the range of start-1 till 0. + */ +static inline int find_next_netdev_feature(u64 feature, unsigned long start) +{ + /* like BITMAP_LAST_WORD_MASK() for u64 + * this sets the most significant 64 - start to 0. + */ + feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1)); + + return fls64(feature) - 1; +} + +/* This goes for the MSB to the LSB through the set feature bits, + * mask_addr should be a u64 and bit an int + */ +#define for_each_netdev_feature(mask_addr, bit) \ + for ((bit) = find_next_netdev_feature((mask_addr), \ + NETDEV_FEATURE_COUNT); \ + (bit) >= 0; \ + (bit) = find_next_netdev_feature((mask_addr), (bit))) + +/* Features valid for ethtool to change */ +/* = all defined minus driver/device-class-related */ +#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ + NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) + +/* remember that ((t)1 << t_BITS) is undefined in C99 */ +#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ + (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ + ~NETIF_F_NEVER_CHANGE) + +/* Segmentation offload feature mask */ +#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ + __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) + +/* List of IP checksum features. Note that NETIF_F_HW_CSUM should not be + * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- + * this would be contradictory + */ +#define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ + NETIF_F_HW_CSUM) + +#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \ + NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID) + +#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ + NETIF_F_FSO) + +/* List of features with software fallbacks. */ +#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | \ + NETIF_F_GSO_SCTP) + +/* + * If one device supports one of these features, then enable them + * for all in netdev_increment_features. + */ +#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ + NETIF_F_SG | NETIF_F_HIGHDMA | \ + NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) + +/* + * If one device doesn't support one of these features, then disable it + * for all in netdev_increment_features. + */ +#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) + +/* + * If upper/master device has these features disabled, they must be disabled + * on all lower/slave devices as well. + */ +#define NETIF_F_UPPER_DISABLES NETIF_F_LRO + +/* changeable features with no special hardware requirements */ +#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) + +/* Changeable features with no special hardware requirements that defaults to off. */ +#define NETIF_F_SOFT_FEATURES_OFF NETIF_F_GRO_FRAGLIST + +#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \ + NETIF_F_HW_VLAN_CTAG_RX | \ + NETIF_F_HW_VLAN_CTAG_TX | \ + NETIF_F_HW_VLAN_STAG_FILTER | \ + NETIF_F_HW_VLAN_STAG_RX | \ + NETIF_F_HW_VLAN_STAG_TX) + +#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ + NETIF_F_GSO_GRE_CSUM | \ + NETIF_F_GSO_IPXIP4 | \ + NETIF_F_GSO_IPXIP6 | \ + NETIF_F_GSO_UDP_TUNNEL | \ + NETIF_F_GSO_UDP_TUNNEL_CSUM) + +#endif /* _LINUX_NETDEV_FEATURES_H */ |