#define RDS_IB_DEFAULT_RECV_WR 1024
#define RDS_IB_DEFAULT_SEND_WR 256
+#define RDS_IB_DEFAULT_RETRY_COUNT 2
+
#define RDS_IB_SUPPORTED_PROTOCOLS 0x00000003 /* minor versions supported */
extern struct list_head rds_ib_devices;
struct ib_pd *pd;
struct ib_mr *mr;
struct rds_ib_mr_pool *mr_pool;
- int fmr_page_shift;
- int fmr_page_size;
- u64 fmr_page_mask;
unsigned int fmr_max_remaps;
unsigned int max_fmrs;
int max_sge;
extern unsigned int fmr_pool_size;
extern unsigned int fmr_message_size;
+extern unsigned int rds_ib_retry_count;
extern spinlock_t ib_nodev_conns_lock;
extern struct list_head ib_nodev_conns;
void rds_ib_send_add_credits(struct rds_connection *conn, unsigned int credits);
void rds_ib_advertise_credits(struct rds_connection *conn, unsigned int posted);
int rds_ib_send_grab_credits(struct rds_ib_connection *ic, u32 wanted,
- u32 *adv_credits, int need_posted);
+ u32 *adv_credits, int need_posted, int max_posted);
/* ib_stats.c */
DECLARE_PER_CPU(struct rds_ib_statistics, rds_ib_stats);
/*
* Helper functions for getting/setting the header and data SGEs in
* RDS packets (not RDMA)
+ *
+ * From version 3.1 onwards, header is in front of data in the sge.
*/
static inline struct ib_sge *
rds_ib_header_sge(struct rds_ib_connection *ic, struct ib_sge *sge)
{
- return &sge[0];
+ if (ic->conn->c_version > RDS_PROTOCOL_3_0)
+ return &sge[0];
+ else
+ return &sge[1];
}
static inline struct ib_sge *
rds_ib_data_sge(struct rds_ib_connection *ic, struct ib_sge *sge)
{
- return &sge[1];
+ if (ic->conn->c_version > RDS_PROTOCOL_3_0)
+ return &sge[1];
+ else
+ return &sge[0];
}
#endif