[mirror_ubuntu-bionic-kernel.git] / include / linux / netdev_features.h

/*
 * 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_TX_BIT,		/* Transmit VLAN hw acceleration */
	NETIF_F_HW_VLAN_RX_BIT,		/* Receive VLAN hw acceleration */
	NETIF_F_HW_VLAN_FILTER_BIT,	/* Receive filtering on VLAN */
	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_UDP_TUNNEL_BIT,	/* ... UDP TUNNEL with TSO */
	/**/NETIF_F_GSO_LAST =		/* last bit, see GSO_MASK */
		NETIF_F_GSO_UDP_TUNNEL_BIT,

	NETIF_F_FCOE_CRC_BIT,		/* FCoE CRC32 */
	NETIF_F_SCTP_CSUM_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 */

	/*
	 * 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_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_FILTER	__NETIF_F(HW_VLAN_FILTER)
#define NETIF_F_HW_VLAN_RX	__NETIF_F(HW_VLAN_RX)
#define NETIF_F_HW_VLAN_TX	__NETIF_F(HW_VLAN_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_CSUM	__NETIF_F(SCTP_CSUM)
#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_GRE_GSO		__NETIF_F(GSO_GRE)
#define NETIF_F_UDP_TUNNEL	__NETIF_F(UDP_TUNNEL)

/* 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 features with software fallbacks. */
#define NETIF_F_GSO_SOFTWARE	(NETIF_F_TSO | NETIF_F_TSO_ECN | \
				 NETIF_F_TSO6 | NETIF_F_UFO)

#define NETIF_F_GEN_CSUM	NETIF_F_HW_CSUM
#define NETIF_F_V4_CSUM		(NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
#define NETIF_F_V6_CSUM		(NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
#define NETIF_F_ALL_CSUM	(NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)

#define NETIF_F_ALL_TSO 	(NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)

#define NETIF_F_ALL_FCOE	(NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
				 NETIF_F_FSO)

/*
 * 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)

/* changeable features with no special hardware requirements */
#define NETIF_F_SOFT_FEATURES	(NETIF_F_GSO | NETIF_F_GRO)

#endif	/* _LINUX_NETDEV_FEATURES_H */
Commit	Line	Data
a59e2ecb MM	1	/*
	2	* Network device features.
	3	*
	4	*
	5	* This program is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU General Public License
	7	* as published by the Free Software Foundation; either version
	8	* 2 of the License, or (at your option) any later version.
	9	*/
	10	#ifndef _LINUX_NETDEV_FEATURES_H
	11	#define _LINUX_NETDEV_FEATURES_H
	12
c8f44aff MM	13	#include <linux/types.h>
c8f44aff MM	14
a861a8b2	15	typedef u64 netdev_features_t;
c8f44aff	16
a19f2a6d MM	17	enum {
	18	NETIF_F_SG_BIT, /* Scatter/gather IO. */
	19	NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */
34324dc2	20	__UNUSED_NETIF_F_1,
a19f2a6d MM	21	NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */
	22	NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */
	23	NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */
	24	NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */
	25	NETIF_F_HW_VLAN_TX_BIT, /* Transmit VLAN hw acceleration */
	26	NETIF_F_HW_VLAN_RX_BIT, /* Receive VLAN hw acceleration */
	27	NETIF_F_HW_VLAN_FILTER_BIT, /* Receive filtering on VLAN */
	28	NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */
	29	NETIF_F_GSO_BIT, /* Enable software GSO. */
	30	NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */
a59e2ecb	31	/* do not use LLTX in new drivers */
a19f2a6d MM	32	NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */
	33	NETIF_F_GRO_BIT, /* Generic receive offload */
	34	NETIF_F_LRO_BIT, /* large receive offload */
	35
	36	/*/NETIF_F_GSO_SHIFT, / keep the order of SKB_GSO_* bits */
	37	NETIF_F_TSO_BIT /* ... TCPv4 segmentation */
	38	= NETIF_F_GSO_SHIFT,
	39	NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */
	40	NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */
	41	NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */
	42	NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
	43	NETIF_F_FSO_BIT, /* ... FCoE segmentation */
68c33163	44	NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */
73136267 PS	45	NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */
	46	/*/NETIF_F_GSO_LAST = / last bit, see GSO_MASK */
	47	NETIF_F_GSO_UDP_TUNNEL_BIT,
a19f2a6d MM	48
	49	NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
	50	NETIF_F_SCTP_CSUM_BIT, /* SCTP checksum offload */
	51	NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/
	52	NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */
	53	NETIF_F_RXHASH_BIT, /* Receive hashing offload */
	54	NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */
	55	NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */
	56	NETIF_F_LOOPBACK_BIT, /* Enable loopback */
36eabda3	57	NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */
5e0c03c8	58	NETIF_F_RXALL_BIT, /* Receive errored frames too */
a19f2a6d MM	59
	60	/*
	61	* Add your fresh new feature above and remember to update
	62	* netdev_features_strings[] in net/core/ethtool.c and maybe
	63	* some feature mask #defines below. Please also describe it
	64	* in Documentation/networking/netdev-features.txt.
	65	*/
a59e2ecb	66
a19f2a6d MM	67	/**/NETDEV_FEATURE_COUNT
a19f2a6d MM	68	};
a59e2ecb	69
a19f2a6d MM	70	/* copy'n'paste compression ;) */
	71	#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))
	72	#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
	73
	74	#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
	75	#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
	76	#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
	77	#define NETIF_F_FSO __NETIF_F(FSO)
	78	#define NETIF_F_GRO __NETIF_F(GRO)
	79	#define NETIF_F_GSO __NETIF_F(GSO)
	80	#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)
	81	#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)
	82	#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)
	83	#define NETIF_F_HW_VLAN_FILTER __NETIF_F(HW_VLAN_FILTER)
	84	#define NETIF_F_HW_VLAN_RX __NETIF_F(HW_VLAN_RX)
	85	#define NETIF_F_HW_VLAN_TX __NETIF_F(HW_VLAN_TX)
	86	#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
	87	#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
	88	#define NETIF_F_LLTX __NETIF_F(LLTX)
	89	#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)
	90	#define NETIF_F_LRO __NETIF_F(LRO)
	91	#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
	92	#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
a19f2a6d MM	93	#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
	94	#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
	95	#define NETIF_F_RXHASH __NETIF_F(RXHASH)
	96	#define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM)
	97	#define NETIF_F_SG __NETIF_F(SG)
	98	#define NETIF_F_TSO6 __NETIF_F(TSO6)
	99	#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)
	100	#define NETIF_F_TSO __NETIF_F(TSO)
	101	#define NETIF_F_UFO __NETIF_F(UFO)
	102	#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
36eabda3	103	#define NETIF_F_RXFCS __NETIF_F(RXFCS)
5e0c03c8	104	#define NETIF_F_RXALL __NETIF_F(RXALL)
68c33163	105	#define NETIF_F_GRE_GSO __NETIF_F(GSO_GRE)
73136267	106	#define NETIF_F_UDP_TUNNEL __NETIF_F(UDP_TUNNEL)
a59e2ecb MM	107
	108	/* Features valid for ethtool to change */
	109	/* = all defined minus driver/device-class-related */
	110	#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED \| \
	111	NETIF_F_LLTX \| NETIF_F_NETNS_LOCAL)
a19f2a6d MM	112
	113	/* remember that ((t)1 << t_BITS) is undefined in C99 */
	114	#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) \| \
	115	(__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
	116	~NETIF_F_NEVER_CHANGE)
	117
	118	/* Segmentation offload feature mask */
	119	#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
	120	__NETIF_F_BIT(NETIF_F_GSO_SHIFT))
a59e2ecb MM	121
	122	/* List of features with software fallbacks. */
	123	#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO \| NETIF_F_TSO_ECN \| \
	124	NETIF_F_TSO6 \| NETIF_F_UFO)
	125
34324dc2	126	#define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM
a59e2ecb MM	127	#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM \| NETIF_F_IP_CSUM)
	128	#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM \| NETIF_F_IPV6_CSUM)
	129	#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM \| NETIF_F_V6_CSUM)
	130
	131	#define NETIF_F_ALL_TSO (NETIF_F_TSO \| NETIF_F_TSO6 \| NETIF_F_TSO_ECN)
	132
	133	#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC \| NETIF_F_FCOE_MTU \| \
	134	NETIF_F_FSO)
	135
	136	/*
	137	* If one device supports one of these features, then enable them
	138	* for all in netdev_increment_features.
	139	*/
	140	#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE \| NETIF_F_GSO_ROBUST \| \
	141	NETIF_F_SG \| NETIF_F_HIGHDMA \| \
	142	NETIF_F_FRAGLIST \| NETIF_F_VLAN_CHALLENGED)
	143	/*
	144	* If one device doesn't support one of these features, then disable it
	145	* for all in netdev_increment_features.
	146	*/
	147	#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY \| NETIF_F_FSO)
	148
	149	/* changeable features with no special hardware requirements */
	150	#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO \| NETIF_F_GRO)
	151
	152	#endif /* _LINUX_NETDEV_FEATURES_H */