#endif
#include_next <linux/skbuff.h>
-
#include <linux/jhash.h>
-#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
#endif /* !HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET */
+#ifndef HAVE_SKB_INNER_TRANSPORT_OFFSET
+static inline int skb_inner_transport_offset(const struct sk_buff *skb)
+{
+ return skb_inner_transport_header(skb) - skb->data;
+}
+#endif
+
#ifndef HAVE_SKB_RESET_TAIL_POINTER
static inline void skb_reset_tail_pointer(struct sk_buff *skb)
{
#define CHECKSUM_COMPLETE CHECKSUM_HW
#endif
-#ifndef HAVE_SKBUFF_HEADER_HELPERS
-static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
-{
- return skb->h.raw;
-}
-
-static inline void skb_reset_transport_header(struct sk_buff *skb)
-{
- skb->h.raw = skb->data;
-}
-
-static inline void skb_set_transport_header(struct sk_buff *skb,
- const int offset)
-{
- skb->h.raw = skb->data + offset;
-}
-
-static inline unsigned char *skb_network_header(const struct sk_buff *skb)
-{
- return skb->nh.raw;
-}
-
-static inline void skb_reset_network_header(struct sk_buff *skb)
-{
- skb->nh.raw = skb->data;
-}
-
-static inline void skb_set_network_header(struct sk_buff *skb, const int offset)
-{
- skb->nh.raw = skb->data + offset;
-}
-
-static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
-{
- return skb->mac.raw;
-}
-
-static inline void skb_reset_mac_header(struct sk_buff *skb)
-{
- skb->mac_header = skb->data;
-}
-
-static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
-{
- skb->mac.raw = skb->data + offset;
-}
-
-static inline int skb_transport_offset(const struct sk_buff *skb)
-{
- return skb_transport_header(skb) - skb->data;
-}
-
-static inline int skb_network_offset(const struct sk_buff *skb)
-{
- return skb_network_header(skb) - skb->data;
-}
-
-static inline void skb_copy_to_linear_data(struct sk_buff *skb,
- const void *from,
- const unsigned int len)
-{
- memcpy(skb->data, from, len);
-}
-#endif /* !HAVE_SKBUFF_HEADER_HELPERS */
-
#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_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)
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)
-unsigned int skb_zerocopy_headlen(const struct sk_buff *from);
+#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 skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len,
- int hlen);
+int rpl_skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len,
+ int hlen);
#endif
#ifndef HAVE_SKB_CLEAR_HASH
#ifndef HAVE_SKB_ENSURE_WRITABLE
#define skb_ensure_writable rpl_skb_ensure_writable
-int skb_ensure_writable(struct sk_buff *skb, int write_len);
+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 skb_vlan_pop(struct sk_buff *skb);
+int rpl_skb_vlan_pop(struct sk_buff *skb);
#endif
#ifndef HAVE_SKB_VLAN_PUSH
#define skb_vlan_push rpl_skb_vlan_push
-int skb_vlan_push(struct sk_buff *skb, __be16 vlan_proto, u16 vlan_tci);
+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
+
+#ifndef HAVE_SKB_CHECKSUM_START_OFFSET
+static inline int skb_checksum_start_offset(const struct sk_buff *skb)
+{
+ return skb->csum_start - skb_headroom(skb);
+}
+#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) < 0)
+ 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)
+{
+ unsigned char *data = skb->data;
+
+ BUG_ON(len > skb->len);
+ __skb_pull(skb, len);
+ skb_postpull_rcsum(skb, data, len);
+ return skb->data;
+}
+
+#endif
+
+#ifndef HAVE_SKB_SCRUB_PACKET_XNET
+#define skb_scrub_packet rpl_skb_scrub_packet
+void rpl_skb_scrub_packet(struct sk_buff *skb, bool xnet);
+#endif
+
+#define skb_pop_mac_header rpl_skb_pop_mac_header
+static inline void skb_pop_mac_header(struct sk_buff *skb)
+{
+ skb->mac_header = skb->network_header;
+}
+
+#ifndef HAVE_SKB_CLEAR_HASH_IF_NOT_L4
+static inline void skb_clear_hash_if_not_l4(struct sk_buff *skb)
+{
+ if (!skb->l4_rxhash)
+ skb_clear_hash(skb);
+}
+#endif
+
+#ifndef HAVE_SKB_POSTPUSH_RCSUM
+static inline void skb_postpush_rcsum(struct sk_buff *skb,
+ const void *start, unsigned int len)
+{
+ /* For performing the reverse operation to skb_postpull_rcsum(),
+ * we can instead of ...
+ *
+ * skb->csum = csum_add(skb->csum, csum_partial(start, len, 0));
+ *
+ * ... just use this equivalent version here to save a few
+ * instructions. Feeding csum of 0 in csum_partial() and later
+ * on adding skb->csum is equivalent to feed skb->csum in the
+ * first place.
+ */
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->csum = csum_partial(start, len, skb->csum);
+}
#endif
#endif
projects / cascardo / ovs.git / blobdiff