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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#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. */ __UNUSED_NETIF_F_12, __UNUSED_NETIF_F_13, 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_ACCECN_BIT, /* TCP AccECN w/ TSO (no clear CWR) */ /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ NETIF_F_GSO_ACCECN_BIT,
NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */ NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */ 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 */ __UNUSED_NETIF_F_56, NETIF_F_GRO_FRAGLIST_BIT, /* Fraglist GRO */
NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */ NETIF_F_GRO_UDP_FWD_BIT, /* Allow UDP GRO for forwarding */
NETIF_F_HW_HSR_TAG_INS_BIT, /* Offload HSR tag insertion */ NETIF_F_HW_HSR_TAG_RM_BIT, /* Offload HSR tag removal */ NETIF_F_HW_HSR_FWD_BIT, /* Offload HSR forwarding */ NETIF_F_HW_HSR_DUP_BIT, /* Offload HSR duplication */
/* * 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_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_LOOPBACK __NETIF_F(LOOPBACK)#define NETIF_F_LRO __NETIF_F(LRO)#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_GSO_ACCECN __NETIF_F(GSO_ACCECN)#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_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)#define NETIF_F_GRO_UDP_FWD __NETIF_F(GRO_UDP_FWD)#define NETIF_F_HW_HSR_TAG_INS __NETIF_F(HW_HSR_TAG_INS)#define NETIF_F_HW_HSR_TAG_RM __NETIF_F(HW_HSR_TAG_RM)#define NETIF_F_HW_HSR_FWD __NETIF_F(HW_HSR_FWD)#define NETIF_F_HW_HSR_DUP __NETIF_F(HW_HSR_DUP)
/* 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
/* 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)
/* List of features with software fallbacks. */#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | \ NETIF_F_GSO_ACCECN | NETIF_F_GSO_SCTP | \ NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_FRAGLIST)
/* * 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 | NETIF_F_GRO_UDP_FWD)
#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)
/* virtual device features */#define MASTER_UPPER_DEV_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \ NETIF_F_GSO_ENCAP_ALL | \ NETIF_F_HIGHDMA | NETIF_F_LRO)
#define MASTER_UPPER_DEV_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE | \ NETIF_F_GSO_PARTIAL)
#define MASTER_UPPER_DEV_MPLS_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ NETIF_F_GSO_SOFTWARE)
#define MASTER_UPPER_DEV_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ NETIF_F_GSO_ESP)
#define MASTER_UPPER_DEV_GSO_PARTIAL_FEATURES (NETIF_F_GSO_ESP)
static inline netdev_features_t netdev_base_features(netdev_features_t features){ features &= ~NETIF_F_ONE_FOR_ALL; features |= NETIF_F_ALL_FOR_ALL; return features;}
#endif /* _LINUX_NETDEV_FEATURES_H */