[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 u32 netdev_features_t;

/* Net device feature bits; if you change something,
 * also update netdev_features_strings[] in ethtool.c */

#define NETIF_F_SG		1	/* Scatter/gather IO. */
#define NETIF_F_IP_CSUM		2	/* Can checksum TCP/UDP over IPv4. */
#define NETIF_F_NO_CSUM		4	/* Does not require checksum. F.e. loopack. */
#define NETIF_F_HW_CSUM		8	/* Can checksum all the packets. */
#define NETIF_F_IPV6_CSUM	16	/* Can checksum TCP/UDP over IPV6 */
#define NETIF_F_HIGHDMA		32	/* Can DMA to high memory. */
#define NETIF_F_FRAGLIST	64	/* Scatter/gather IO. */
#define NETIF_F_HW_VLAN_TX	128	/* Transmit VLAN hw acceleration */
#define NETIF_F_HW_VLAN_RX	256	/* Receive VLAN hw acceleration */
#define NETIF_F_HW_VLAN_FILTER	512	/* Receive filtering on VLAN */
#define NETIF_F_VLAN_CHALLENGED	1024	/* Device cannot handle VLAN packets */
#define NETIF_F_GSO		2048	/* Enable software GSO. */
#define NETIF_F_LLTX		4096	/* LockLess TX - deprecated. Please */
					/* do not use LLTX in new drivers */
#define NETIF_F_NETNS_LOCAL	8192	/* Does not change network namespaces */
#define NETIF_F_GRO		16384	/* Generic receive offload */
#define NETIF_F_LRO		32768	/* large receive offload */

/* the GSO_MASK reserves bits 16 through 23 */
#define NETIF_F_FCOE_CRC	(1 << 24) /* FCoE CRC32 */
#define NETIF_F_SCTP_CSUM	(1 << 25) /* SCTP checksum offload */
#define NETIF_F_FCOE_MTU	(1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
#define NETIF_F_NTUPLE		(1 << 27) /* N-tuple filters supported */
#define NETIF_F_RXHASH		(1 << 28) /* Receive hashing offload */
#define NETIF_F_RXCSUM		(1 << 29) /* Receive checksumming offload */
#define NETIF_F_NOCACHE_COPY	(1 << 30) /* Use no-cache copyfromuser */
#define NETIF_F_LOOPBACK	(1 << 31) /* Enable loopback */

/* Segmentation offload features */
#define NETIF_F_GSO_SHIFT	16
#define NETIF_F_GSO_MASK	0x00ff0000
#define NETIF_F_TSO		(SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
#define NETIF_F_UFO		(SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
#define NETIF_F_GSO_ROBUST	(SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
#define NETIF_F_TSO_ECN		(SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
#define NETIF_F_TSO6		(SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
#define NETIF_F_FSO		(SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)

/* 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)
#define NETIF_F_ETHTOOL_BITS	(0xff3fffff & ~NETIF_F_NEVER_CHANGE)

/* 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 | NETIF_F_NO_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>
	14
	15	typedef u32 netdev_features_t;
	16
a59e2ecb MM	17	/* Net device feature bits; if you change something,
	18	* also update netdev_features_strings[] in ethtool.c */
	19
	20	#define NETIF_F_SG 1 /* Scatter/gather IO. */
	21	#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
	22	#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
	23	#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
	24	#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
	25	#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
	26	#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
	27	#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
	28	#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
	29	#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
	30	#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
	31	#define NETIF_F_GSO 2048 /* Enable software GSO. */
	32	#define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
	33	/* do not use LLTX in new drivers */
	34	#define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
	35	#define NETIF_F_GRO 16384 /* Generic receive offload */
	36	#define NETIF_F_LRO 32768 /* large receive offload */
	37
	38	/* the GSO_MASK reserves bits 16 through 23 */
	39	#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
	40	#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
	41	#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
	42	#define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
	43	#define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
	44	#define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */
	45	#define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */
	46	#define NETIF_F_LOOPBACK (1 << 31) /* Enable loopback */
	47
	48	/* Segmentation offload features */
	49	#define NETIF_F_GSO_SHIFT 16
	50	#define NETIF_F_GSO_MASK 0x00ff0000
	51	#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
	52	#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
	53	#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
	54	#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
	55	#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
	56	#define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
	57
	58	/* Features valid for ethtool to change */
	59	/* = all defined minus driver/device-class-related */
	60	#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED \| \
	61	NETIF_F_LLTX \| NETIF_F_NETNS_LOCAL)
	62	#define NETIF_F_ETHTOOL_BITS (0xff3fffff & ~NETIF_F_NEVER_CHANGE)
	63
	64	/* List of features with software fallbacks. */
	65	#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO \| NETIF_F_TSO_ECN \| \
	66	NETIF_F_TSO6 \| NETIF_F_UFO)
	67
	68	#define NETIF_F_GEN_CSUM (NETIF_F_HW_CSUM \| NETIF_F_NO_CSUM)
	69	#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM \| NETIF_F_IP_CSUM)
	70	#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM \| NETIF_F_IPV6_CSUM)
	71	#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM \| NETIF_F_V6_CSUM)
	72
	73	#define NETIF_F_ALL_TSO (NETIF_F_TSO \| NETIF_F_TSO6 \| NETIF_F_TSO_ECN)
	74
	75	#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC \| NETIF_F_FCOE_MTU \| \
	76	NETIF_F_FSO)
	77
	78	/*
	79	* If one device supports one of these features, then enable them
	80	* for all in netdev_increment_features.
81	*/
82	#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE \| NETIF_F_GSO_ROBUST \| \
83	NETIF_F_SG \| NETIF_F_HIGHDMA \| \
84	NETIF_F_FRAGLIST \| NETIF_F_VLAN_CHALLENGED)
85	/*
86	* If one device doesn't support one of these features, then disable it
87	* for all in netdev_increment_features.
88	*/
89	#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY \| NETIF_F_FSO)
90
91	/* changeable features with no special hardware requirements */
92	#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO \| NETIF_F_GRO)
93
94	#endif /* _LINUX_NETDEV_FEATURES_H */