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-rw-r--r--net/rds/rds.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 7301b9b01890..24576bc4a5e9 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -356,6 +356,19 @@ static inline u32 rds_rdma_cookie_offset(rds_rdma_cookie_t cookie)
#define RDS_MSG_PAGEVEC 7
#define RDS_MSG_FLUSH 8
+struct rds_znotifier {
+ struct list_head z_list;
+ struct mmpin z_mmp;
+ u32 z_cookie;
+};
+
+#define RDS_ZCOPY_SKB(__skb) ((struct rds_znotifier *)&((__skb)->cb[0]))
+
+static inline struct sk_buff *rds_skb_from_znotifier(struct rds_znotifier *z)
+{
+ return container_of((void *)z, struct sk_buff, cb);
+}
+
struct rds_message {
refcount_t m_refcount;
struct list_head m_sock_item;
@@ -436,6 +449,7 @@ struct rds_message {
unsigned int op_count;
unsigned int op_dmasg;
unsigned int op_dmaoff;
+ struct rds_znotifier *op_mmp_znotifier;
struct scatterlist *op_sg;
} data;
};