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/*
* Network device features.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_NETDEV_FEATURES_H
#define _LINUX_NETDEV_FEATURES_H
#include <linux/types.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_UFO_BIT, /* ... UDPv4 fragmentation */
NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */
NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */
NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
NETIF_F_FSO_BIT, /* ... FCoE segmentation */
NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */
NETIF_F_GSO_IPIP_BIT, /* ... IPIP tunnel with TSO */
NETIF_F_GSO_SIT_BIT, /* ... SIT tunnel with TSO */
NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */
__NETIF_F_GSO_UNUSED_BIT, /* RHEL: the last free GSO bit.
* !!! Any reuse of this bit needs
* !!! a prior agreement with the
* !!! Networking Services team.
*/
/**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
__NETIF_F_GSO_UNUSED_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_BUSY_POLL_BIT, /* Busy poll */
NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum 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_SCTP_BIT, /* ... SCTP fragmentation */
NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */
/*
* RHEL only: There is no more space for new GSO bits.
* skb_shared_info->gso_type has only 16 bits and all of them are
* used. We tried to extend skb_shared_info but that had performance
* impact. Hence, no more GSO bits can be backported.
*
* Non-GSO related bits can be still added here. Please add them
* from the top, replacing the placeholder with the highest number.
*/
__NETIF_F_PLACEHOLDER_1,
__NETIF_F_PLACEHOLDER_2,
__NETIF_F_PLACEHOLDER_3,
__NETIF_F_PLACEHOLDER_4,
__NETIF_F_PLACEHOLDER_5,
NETIF_F_GRO_HW_BIT, /* Hardware Generic receive offload */
NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */
NETIF_F_RX_UDP_TUNNEL_PORT_BIT, /* Offload of RX port for UDP tunnels */
/*
* Add your fresh new feature above and remember to update
* netdev_features_strings[] in net/core/ethtool.c and maybe
* some feature mask #defines below. Please also describe it
* in Documentation/networking/netdev-features.txt.
*/
/**/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_UFO __NETIF_F(UFO)
#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_IPIP __NETIF_F(GSO_IPIP)
#define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT)
#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_SCTP __NETIF_F(GSO_SCTP)
#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_BUSY_POLL __NETIF_F(BUSY_POLL)
#define NETIF_F_HW_TC __NETIF_F(HW_TC)
#define NETIF_F_RX_UDP_TUNNEL_PORT __NETIF_F(RX_UDP_TUNNEL_PORT)
/* RHEL-7: stubs for UDP GSO */
#define NETIF_F_GSO_UDP_L4 0
#define SKB_GSO_UDP_L4 0
#define for_each_netdev_feature(mask_addr, bit) \
for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
/* 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_GSO2_MASK (NETIF_F_GSO_GRE_CSUM|NETIF_F_GSO_UDP_TUNNEL_CSUM|\
NETIF_F_GSO_PARTIAL|NETIF_F_GSO_SCTP|\
NETIF_F_TSO_MANGLEID)
#define NETIF_F_GSO_MASK ((__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
__NETIF_F_BIT(NETIF_F_GSO_SHIFT)) | \
NETIF_F_GSO2_MASK)
#define NETIF_F_GSO2_SHIFT (NETIF_F_GSO_GRE_CSUM_BIT - \
(NETIF_F_GSO_LAST + 1 - 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_UFO | \
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)
#define NETIF_F_GSO1_ENCAP_ALL (NETIF_F_GSO_GRE | \
NETIF_F_GSO_IPIP | \
NETIF_F_GSO_SIT | \
NETIF_F_GSO_UDP_TUNNEL)
#define NETIF_F_GSO2_ENCAP_ALL (NETIF_F_GSO_GRE_CSUM | \
NETIF_F_GSO_UDP_TUNNEL_CSUM)
#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO1_ENCAP_ALL | \
NETIF_F_GSO2_ENCAP_ALL)
#endif /* _LINUX_NETDEV_FEATURES_H */
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