#ifndef __LINUX_SKBUFF_WRAPPER_H
#define __LINUX_SKBUFF_WRAPPER_H 1
+#include <linux/version.h>
+#include <linux/types.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+/* This should be before skbuff.h to make sure that we rewrite
+ * the calls there. */
+struct sk_buff;
+
+int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
+ gfp_t gfp_mask);
+#define pskb_expand_head rpl_pskb_expand_head
+#endif
+
#include_next <linux/skbuff.h>
-#include <linux/version.h>
+#include <linux/jhash.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
-/* In version 2.6.24 the return type of skb_headroom() changed from 'int' to
- * 'unsigned int'. We use skb_headroom() as one arm of a min(a,b) invocation
- * in make_writable() in actions.c, so we need the correct type. */
-#define skb_headroom rpl_skb_headroom
-static inline unsigned int rpl_skb_headroom(const struct sk_buff *skb)
-{
- return skb->data - skb->head;
-}
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
+#define SKB_GSO_GRE 0
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,10,0)
+#define SKB_GSO_UDP_TUNNEL 0
+#endif
+
+#ifndef HAVE_SKB_GSO_GRE_CSUM
+#define SKB_GSO_GRE_CSUM 0
+#endif
+
+#ifndef HAVE_SKB_GSO_UDP_TUNNEL_CSUM
+#define SKB_GSO_UDP_TUNNEL_CSUM 0
+#endif
+
+#ifndef HAVE_IGNORE_DF_RENAME
+#define ignore_df local_df
#endif
#ifndef HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET
}
#endif /* !HAVE_SKB_COW_HEAD */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
-static inline int skb_clone_writable(struct sk_buff *skb, int len)
-{
- return false;
-}
-#endif
-
#ifndef HAVE_SKB_DST_ACCESSOR_FUNCS
static inline struct dst_entry *skb_dst(const struct sk_buff *skb)
{
}
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
-/* Emulate Linux 2.6.17 and later behavior, in which kfree_skb silently ignores
- * null pointer arguments. */
-#define kfree_skb(skb) kfree_skb_maybe_null(skb)
-static inline void kfree_skb_maybe_null(struct sk_buff *skb)
-{
- if (likely(skb != NULL))
- (kfree_skb)(skb);
-}
-#endif
-
-
#ifndef CHECKSUM_PARTIAL
#define CHECKSUM_PARTIAL CHECKSUM_HW
#endif
#define CHECKSUM_COMPLETE CHECKSUM_HW
#endif
-#ifdef HAVE_MAC_RAW
-#define mac_header mac.raw
-#define network_header nh.raw
-#define transport_header h.raw
-#endif
-
#ifndef HAVE_SKBUFF_HEADER_HELPERS
static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
{
}
#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 */
-
#ifndef HAVE_SKB_WARN_LRO
#ifndef NETIF_F_LRO
static inline bool skb_warn_if_lro(const struct sk_buff *skb)
#endif
#ifndef HAVE_SKB_FRAG_PAGE
+#include <linux/mm.h>
+
static inline struct page *skb_frag_page(const skb_frag_t *frag)
{
return frag->page;
}
+
+static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page)
+{
+ frag->page = page;
+}
+static inline void skb_frag_size_set(skb_frag_t *frag, unsigned int size)
+{
+ frag->size = size;
+}
+static inline void __skb_frag_ref(skb_frag_t *frag)
+{
+ get_page(skb_frag_page(frag));
+}
+static inline void __skb_frag_unref(skb_frag_t *frag)
+{
+ put_page(skb_frag_page(frag));
+}
+
+static inline void skb_frag_ref(struct sk_buff *skb, int f)
+{
+ __skb_frag_ref(&skb_shinfo(skb)->frags[f]);
+}
+
+static inline void skb_frag_unref(struct sk_buff *skb, int f)
+{
+ __skb_frag_unref(&skb_shinfo(skb)->frags[f]);
+}
+
#endif
#ifndef HAVE_SKB_RESET_MAC_LEN
{
skb->mac_len = skb->network_header - skb->mac_header;
}
+#endif
+
+#ifndef HAVE_SKB_UNCLONE
+static inline int skb_unclone(struct sk_buff *skb, gfp_t pri)
+{
+ might_sleep_if(pri & __GFP_WAIT);
+
+ if (skb_cloned(skb))
+ return pskb_expand_head(skb, 0, 0, pri);
+
+ return 0;
+}
+#endif
+
+#ifndef HAVE_SKB_ORPHAN_FRAGS
+static inline int skb_orphan_frags(struct sk_buff *skb, gfp_t gfp_mask)
+{
+ return 0;
+}
+#endif
+
+#ifndef HAVE_SKB_GET_HASH
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)
+#define __skb_get_hash rpl__skb_get_rxhash
+#define skb_get_hash rpl_skb_get_rxhash
+
+extern u32 __skb_get_hash(struct sk_buff *skb);
+static inline __u32 skb_get_hash(struct sk_buff *skb)
+{
+#ifdef HAVE_RXHASH
+ if (skb->rxhash)
+#ifndef HAVE_U16_RXHASH
+ return skb->rxhash;
+#else
+ return jhash_1word(skb->rxhash, 0);
+#endif
+#endif
+ return __skb_get_hash(skb);
+}
+
+#else
+#define skb_get_hash skb_get_rxhash
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) */
+#endif /* HAVE_SKB_GET_HASH */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)
+static inline void skb_tx_error(struct sk_buff *skb)
+{
+ return;
+}
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)
+#define skb_zerocopy_headlen rpl_skb_zerocopy_headlen
+unsigned int rpl_skb_zerocopy_headlen(const struct sk_buff *from);
+#endif
+
+#ifndef HAVE_SKB_ZEROCOPY
+#define skb_zerocopy rpl_skb_zerocopy
+int rpl_skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len,
+ int hlen);
+#endif
+
+#ifndef HAVE_SKB_CLEAR_HASH
+static inline void skb_clear_hash(struct sk_buff *skb)
+{
+#ifdef HAVE_RXHASH
+ skb->rxhash = 0;
+#endif
+#if defined(HAVE_L4_RXHASH) && !defined(HAVE_RHEL_OVS_HOOK)
+ skb->l4_rxhash = 0;
+#endif
+}
+#endif
+
+#ifndef HAVE_SKB_HAS_FRAG_LIST
+#define skb_has_frag_list skb_has_frags
+#endif
+
+#ifndef HAVE___SKB_FILL_PAGE_DESC
+static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
+ struct page *page, int off, int size)
+{
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ __skb_frag_set_page(frag, page);
+ frag->page_offset = off;
+ skb_frag_size_set(frag, size);
+}
+#endif
+
+#ifndef HAVE_SKB_ENSURE_WRITABLE
+#define skb_ensure_writable rpl_skb_ensure_writable
+int rpl_skb_ensure_writable(struct sk_buff *skb, int write_len);
+#endif
+
+#ifndef HAVE_SKB_VLAN_POP
+#define skb_vlan_pop rpl_skb_vlan_pop
+int rpl_skb_vlan_pop(struct sk_buff *skb);
+#endif
+
+#ifndef HAVE_SKB_VLAN_PUSH
+#define skb_vlan_push rpl_skb_vlan_push
+int rpl_skb_vlan_push(struct sk_buff *skb, __be16 vlan_proto, u16 vlan_tci);
+#endif
+
+#ifndef HAVE_KFREE_SKB_LIST
+void rpl_kfree_skb_list(struct sk_buff *segs);
+#define kfree_skb_list rpl_kfree_skb_list
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,3,0)
+#define skb_postpull_rcsum rpl_skb_postpull_rcsum
+static inline void skb_postpull_rcsum(struct sk_buff *skb,
+ const void *start, unsigned int len)
+{
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->csum = csum_sub(skb->csum, csum_partial(start, len, 0));
+ else if (skb->ip_summed == CHECKSUM_PARTIAL &&
+ skb_checksum_start_offset(skb) <= len)
+ skb->ip_summed = CHECKSUM_NONE;
+}
+
+#define skb_pull_rcsum rpl_skb_pull_rcsum
+static inline unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len)
+{
+ BUG_ON(len > skb->len);
+ skb->len -= len;
+ BUG_ON(skb->len < skb->data_len);
+ skb_postpull_rcsum(skb, skb->data, len);
+ return skb->data += len;
+}
+
#endif
#endif
projects / cascardo / ovs.git / blobdiff