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-rw-r--r--net/core/flow_dissector.c43
-rw-r--r--net/core/skbuff.c18
2 files changed, 43 insertions, 18 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index a669dea14..61ad43f61 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -651,6 +651,23 @@ void make_flow_keys_digest(struct flow_keys_digest *digest,
}
EXPORT_SYMBOL(make_flow_keys_digest);
+static struct flow_dissector flow_keys_dissector_symmetric __read_mostly;
+
+u32 __skb_get_hash_symmetric(struct sk_buff *skb)
+{
+ struct flow_keys keys;
+
+ __flow_hash_secret_init();
+
+ memset(&keys, 0, sizeof(keys));
+ __skb_flow_dissect(skb, &flow_keys_dissector_symmetric, &keys,
+ NULL, 0, 0, 0,
+ FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL);
+
+ return __flow_hash_from_keys(&keys, hashrnd);
+}
+EXPORT_SYMBOL_GPL(__skb_get_hash_symmetric);
+
/**
* __skb_get_hash: calculate a flow hash
* @skb: sk_buff to calculate flow hash from
@@ -868,6 +885,29 @@ static const struct flow_dissector_key flow_keys_dissector_keys[] = {
},
};
+static const struct flow_dissector_key flow_keys_dissector_symmetric_keys[] = {
+ {
+ .key_id = FLOW_DISSECTOR_KEY_CONTROL,
+ .offset = offsetof(struct flow_keys, control),
+ },
+ {
+ .key_id = FLOW_DISSECTOR_KEY_BASIC,
+ .offset = offsetof(struct flow_keys, basic),
+ },
+ {
+ .key_id = FLOW_DISSECTOR_KEY_IPV4_ADDRS,
+ .offset = offsetof(struct flow_keys, addrs.v4addrs),
+ },
+ {
+ .key_id = FLOW_DISSECTOR_KEY_IPV6_ADDRS,
+ .offset = offsetof(struct flow_keys, addrs.v6addrs),
+ },
+ {
+ .key_id = FLOW_DISSECTOR_KEY_PORTS,
+ .offset = offsetof(struct flow_keys, ports),
+ },
+};
+
static const struct flow_dissector_key flow_keys_buf_dissector_keys[] = {
{
.key_id = FLOW_DISSECTOR_KEY_CONTROL,
@@ -889,6 +929,9 @@ static int __init init_default_flow_dissectors(void)
skb_flow_dissector_init(&flow_keys_dissector,
flow_keys_dissector_keys,
ARRAY_SIZE(flow_keys_dissector_keys));
+ skb_flow_dissector_init(&flow_keys_dissector_symmetric,
+ flow_keys_dissector_symmetric_keys,
+ ARRAY_SIZE(flow_keys_dissector_symmetric_keys));
skb_flow_dissector_init(&flow_keys_buf_dissector,
flow_keys_buf_dissector_keys,
ARRAY_SIZE(flow_keys_buf_dissector_keys));
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index e561f9f07..59bf4d771 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3016,24 +3016,6 @@ int skb_append_pagefrags(struct sk_buff *skb, struct page *page,
EXPORT_SYMBOL_GPL(skb_append_pagefrags);
/**
- * skb_push_rcsum - push skb and update receive checksum
- * @skb: buffer to update
- * @len: length of data pulled
- *
- * This function performs an skb_push on the packet and updates
- * the CHECKSUM_COMPLETE checksum. It should be used on
- * receive path processing instead of skb_push unless you know
- * that the checksum difference is zero (e.g., a valid IP header)
- * or you are setting ip_summed to CHECKSUM_NONE.
- */
-static unsigned char *skb_push_rcsum(struct sk_buff *skb, unsigned len)
-{
- skb_push(skb, len);
- skb_postpush_rcsum(skb, skb->data, len);
- return skb->data;
-}
-
-/**
* skb_pull_rcsum - pull skb and update receive checksum
* @skb: buffer to update
* @len: length of data pulled