diff options
Diffstat (limited to 'net/rds/rds.h')
| -rw-r--r-- | net/rds/rds.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/net/rds/rds.h b/net/rds/rds.h index 7301b9b01890..31cd38852050 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; }; @@ -771,7 +785,8 @@ rds_conn_connecting(struct rds_connection *conn) /* message.c */ struct rds_message *rds_message_alloc(unsigned int nents, gfp_t gfp); struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents); -int rds_message_copy_from_user(struct rds_message *rm, struct iov_iter *from); +int rds_message_copy_from_user(struct rds_message *rm, struct iov_iter *from, + bool zcopy); struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned int total_len); void rds_message_populate_header(struct rds_header *hdr, __be16 sport, __be16 dport, u64 seq); |