[RAMEN9610-21564]net/flow_dissector: switch to siphash

[GitHub/MotorolaMobilityLLC/kernel-slsi.git] / include / linux / skbuff.h

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 39c2570ddcf69685869ca0169b72fcfa64177969..83e9c1258aa6081416cd9e4ce44ca7a5a42f3d06 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1228,7 +1228,8 @@ static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6
        return skb->hash;
 }
 
-__u32 skb_get_hash_perturb(const struct sk_buff *skb, u32 perturb);
+__u32 skb_get_hash_perturb(const struct sk_buff *skb,
+                          const siphash_key_t *perturb);
 
 static inline __u32 skb_get_hash_raw(const struct sk_buff *skb)
 {
@@ -2377,7 +2378,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb,
                return;
        else if (skb_flow_dissect_flow_keys(skb, &keys, 0))
                skb_set_transport_header(skb, keys.control.thoff);
-       else
+       else if (offset_hint >= 0)
                skb_set_transport_header(skb, offset_hint);
 }
 
@@ -3317,6 +3318,7 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen);
 void skb_scrub_packet(struct sk_buff *skb, bool xnet);
 unsigned int skb_gso_transport_seglen(const struct sk_buff *skb);
 bool skb_gso_validate_mtu(const struct sk_buff *skb, unsigned int mtu);
+bool skb_gso_validate_mac_len(const struct sk_buff *skb, unsigned int len);
 struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features);
 struct sk_buff *skb_vlan_untag(struct sk_buff *skb);
 int skb_ensure_writable(struct sk_buff *skb, int write_len);
@@ -4087,6 +4089,21 @@ static inline unsigned int skb_gso_network_seglen(const struct sk_buff *skb)
        return hdr_len + skb_gso_transport_seglen(skb);
 }
 
+/**
+ * skb_gso_mac_seglen - Return length of individual segments of a gso packet
+ *
+ * @skb: GSO skb
+ *
+ * skb_gso_mac_seglen is used to determine the real size of the
+ * individual segments, including MAC/L2, Layer3 (IP, IPv6) and L4
+ * headers (TCP/UDP).
+ */
+static inline unsigned int skb_gso_mac_seglen(const struct sk_buff *skb)
+{
+       unsigned int hdr_len = skb_transport_header(skb) - skb_mac_header(skb);
+       return hdr_len + skb_gso_transport_seglen(skb);
+}
+
 /* Local Checksum Offload.
  * Compute outer checksum based on the assumption that the
  * inner checksum will be offloaded later.