net: split netdev features to separate header

Move features definitions to separate header so that linux/skbuff.h won't
need to include linux/netdevice.h after netdev_features_t is introduced.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 90 insertions, 0 deletions

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
new file mode 100644
index 000000000000..32640edf4d78
--- /dev/null
+++ b/include/linux/netdev_features.h
@@ -0,0 +1,90 @@
+/*
+ * 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
+
+/* 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 */