const struct net_device *dev = port->dev;
struct ifinfomsg *hdr;
struct nlmsghdr *nlh;
- u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
nlh = nlmsg_put(skb, 0, 0, event, sizeof(*hdr), flags);
if (nlh == NULL)
NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
NLA_PUT_U32(skb, IFLA_MASTER, dp->ports[ODPP_LOCAL]->dev->ifindex);
NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
- NLA_PUT_U8(skb, IFLA_OPERSTATE, operstate);
+#ifdef IFLA_OPERSTATE
+ NLA_PUT_U8(skb, IFLA_OPERSTATE,
+ netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
+#endif
if (dev->addr_len)
NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
return mask;
}
-const struct file_operations openvswitch_fops = {
+struct file_operations openvswitch_fops = {
/* XXX .aio_read = openvswitch_aio_read, */
.read = openvswitch_read,
.poll = openvswitch_poll,
+#ifndef __LINUX_LOG2_WRAPPER
+#define __LINUX_LOG2_WRAPPER
+
#ifdef HAVE_LOG2_H
#include_next <linux/log2.h>
#else
-/* Integer base 2 logarithm calculation
- *
- * Copyright (C) 2006, 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * 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_LOG2_H
-#define _LINUX_LOG2_H
-
-#include <linux/types.h>
-#include <linux/bitops.h>
+/* This is very stripped down because log2.h has far too many dependencies. */
-/*
- * deal with unrepresentable constant logarithms
- */
extern __attribute__((const, noreturn))
int ____ilog2_NaN(void);
-/*
- * non-constant log of base 2 calculators
- * - the arch may override these in asm/bitops.h if they can be implemented
- * more efficiently than using fls() and fls64()
- * - the arch is not required to handle n==0 if implementing the fallback
- */
-#ifndef CONFIG_ARCH_HAS_ILOG2_U32
-static inline __attribute__((const))
-int __ilog2_u32(u32 n)
-{
- return fls(n) - 1;
-}
-#endif
-
-#ifndef CONFIG_ARCH_HAS_ILOG2_U64
-static inline __attribute__((const))
-int __ilog2_u64(u64 n)
-{
- return fls64(n) - 1;
-}
+#define ilog2(n) ((n) == 4 ? 2 : \
+ (n) == 8 ? 3 : \
+ ____ilog2_NaN())
#endif
-/*
- * round up to nearest power of two
- */
-static inline __attribute__((const))
-unsigned long __roundup_pow_of_two(unsigned long n)
-{
- return 1UL << fls_long(n - 1);
-}
-
-/**
- * ilog2 - log of base 2 of 32-bit or a 64-bit unsigned value
- * @n - parameter
- *
- * constant-capable log of base 2 calculation
- * - this can be used to initialise global variables from constant data, hence
- * the massive ternary operator construction
- *
- * selects the appropriately-sized optimised version depending on sizeof(n)
- */
-#define ilog2(n) \
-( \
- __builtin_constant_p(n) ? ( \
- (n) < 1 ? ____ilog2_NaN() : \
- (n) & (1ULL << 63) ? 63 : \
- (n) & (1ULL << 62) ? 62 : \
- (n) & (1ULL << 61) ? 61 : \
- (n) & (1ULL << 60) ? 60 : \
- (n) & (1ULL << 59) ? 59 : \
- (n) & (1ULL << 58) ? 58 : \
- (n) & (1ULL << 57) ? 57 : \
- (n) & (1ULL << 56) ? 56 : \
- (n) & (1ULL << 55) ? 55 : \
- (n) & (1ULL << 54) ? 54 : \
- (n) & (1ULL << 53) ? 53 : \
- (n) & (1ULL << 52) ? 52 : \
- (n) & (1ULL << 51) ? 51 : \
- (n) & (1ULL << 50) ? 50 : \
- (n) & (1ULL << 49) ? 49 : \
- (n) & (1ULL << 48) ? 48 : \
- (n) & (1ULL << 47) ? 47 : \
- (n) & (1ULL << 46) ? 46 : \
- (n) & (1ULL << 45) ? 45 : \
- (n) & (1ULL << 44) ? 44 : \
- (n) & (1ULL << 43) ? 43 : \
- (n) & (1ULL << 42) ? 42 : \
- (n) & (1ULL << 41) ? 41 : \
- (n) & (1ULL << 40) ? 40 : \
- (n) & (1ULL << 39) ? 39 : \
- (n) & (1ULL << 38) ? 38 : \
- (n) & (1ULL << 37) ? 37 : \
- (n) & (1ULL << 36) ? 36 : \
- (n) & (1ULL << 35) ? 35 : \
- (n) & (1ULL << 34) ? 34 : \
- (n) & (1ULL << 33) ? 33 : \
- (n) & (1ULL << 32) ? 32 : \
- (n) & (1ULL << 31) ? 31 : \
- (n) & (1ULL << 30) ? 30 : \
- (n) & (1ULL << 29) ? 29 : \
- (n) & (1ULL << 28) ? 28 : \
- (n) & (1ULL << 27) ? 27 : \
- (n) & (1ULL << 26) ? 26 : \
- (n) & (1ULL << 25) ? 25 : \
- (n) & (1ULL << 24) ? 24 : \
- (n) & (1ULL << 23) ? 23 : \
- (n) & (1ULL << 22) ? 22 : \
- (n) & (1ULL << 21) ? 21 : \
- (n) & (1ULL << 20) ? 20 : \
- (n) & (1ULL << 19) ? 19 : \
- (n) & (1ULL << 18) ? 18 : \
- (n) & (1ULL << 17) ? 17 : \
- (n) & (1ULL << 16) ? 16 : \
- (n) & (1ULL << 15) ? 15 : \
- (n) & (1ULL << 14) ? 14 : \
- (n) & (1ULL << 13) ? 13 : \
- (n) & (1ULL << 12) ? 12 : \
- (n) & (1ULL << 11) ? 11 : \
- (n) & (1ULL << 10) ? 10 : \
- (n) & (1ULL << 9) ? 9 : \
- (n) & (1ULL << 8) ? 8 : \
- (n) & (1ULL << 7) ? 7 : \
- (n) & (1ULL << 6) ? 6 : \
- (n) & (1ULL << 5) ? 5 : \
- (n) & (1ULL << 4) ? 4 : \
- (n) & (1ULL << 3) ? 3 : \
- (n) & (1ULL << 2) ? 2 : \
- (n) & (1ULL << 1) ? 1 : \
- (n) & (1ULL << 0) ? 0 : \
- ____ilog2_NaN() \
- ) : \
- (sizeof(n) <= 4) ? \
- __ilog2_u32(n) : \
- __ilog2_u64(n) \
- )
-
-/**
- * roundup_pow_of_two - round the given value up to nearest power of two
- * @n - parameter
- *
- * round the given balue up to the nearest power of two
- * - the result is undefined when n == 0
- * - this can be used to initialise global variables from constant data
- */
-#define roundup_pow_of_two(n) \
-( \
- __builtin_constant_p(n) ? ( \
- (n == 1) ? 0 : \
- (1UL << (ilog2((n) - 1) + 1)) \
- ) : \
- __roundup_pow_of_two(n) \
- )
-
-#endif /* _LINUX_LOG2_H */
-
#endif
#endif /* !HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET */
+/*
+ * The networking layer reserves some headroom in skb data (via
+ * dev_alloc_skb). This is used to avoid having to reallocate skb data when
+ * the header has to grow. In the default case, if the header has to grow
+ * 16 bytes or less we avoid the reallocation.
+ *
+ * Unfortunately this headroom changes the DMA alignment of the resulting
+ * network packet. As for NET_IP_ALIGN, this unaligned DMA is expensive
+ * on some architectures. An architecture can override this value,
+ * perhaps setting it to a cacheline in size (since that will maintain
+ * cacheline alignment of the DMA). It must be a power of 2.
+ *
+ * Various parts of the networking layer expect at least 16 bytes of
+ * headroom, you should not reduce this.
+ */
+#ifndef NET_SKB_PAD
+#define NET_SKB_PAD 16
+#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
static inline int __skb_cow(struct sk_buff *skb, unsigned int headroom,
}
#endif /* !HAVE_SKBUFF_HEADER_HELPERS */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+#warning "TSO/UFO not supported on kernels earlier than 2.6.18"
+
+static inline int skb_is_gso(const struct sk_buff *skb)
+{
+ return 0;
+}
+
+static inline struct sk_buff *skb_gso_segment(struct sk_buff *skb,
+ int features)
+{
+ return NULL;
+}
+#endif /* before 2.6.18 */
+
#endif
projects / openvswitch / commitdiff