[SCSI] bfa: Make changes to FCXP resource management.
- Made changes to split FCXP resources as request and response resources.
- The split will reduce the contention for FCXP resources in an open zone
config.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_svc.h b/drivers/scsi/bfa/bfa_svc.h
index f300675..4da2b58 100644
--- a/drivers/scsi/bfa/bfa_svc.h
+++ b/drivers/scsi/bfa/bfa_svc.h
@@ -97,10 +97,13 @@
struct bfa_s *bfa; /* backpointer to BFA */
struct bfa_fcxp_s *fcxp_list; /* array of FCXPs */
u16 num_fcxps; /* max num FCXP requests */
- struct list_head fcxp_free_q; /* free FCXPs */
- struct list_head fcxp_active_q; /* active FCXPs */
- struct list_head wait_q; /* wait queue for free fcxp */
- struct list_head fcxp_unused_q; /* unused fcxps */
+ struct list_head fcxp_req_free_q; /* free FCXPs used for sending req */
+ struct list_head fcxp_rsp_free_q; /* free FCXPs used for sending req */
+ struct list_head fcxp_active_q; /* active FCXPs */
+ struct list_head req_wait_q; /* wait queue for free req_fcxp */
+ struct list_head rsp_wait_q; /* wait queue for free rsp_fcxp */
+ struct list_head fcxp_req_unused_q; /* unused req_fcxps */
+ struct list_head fcxp_rsp_unused_q; /* unused rsp_fcxps */
u32 req_pld_sz;
u32 rsp_pld_sz;
struct bfa_mem_dma_s dma_seg[BFA_FCXP_DMA_SEGS];
@@ -197,6 +200,7 @@
struct bfa_cb_qe_s hcb_qe; /* comp: callback qelem */
struct bfa_reqq_wait_s reqq_wqe;
bfa_boolean_t reqq_waiting;
+ bfa_boolean_t req_rsp; /* Used to track req/rsp fcxp */
};
struct bfa_fcxp_wqe_s {
@@ -586,20 +590,22 @@
/*
* bfa fcxp API functions
*/
-struct bfa_fcxp_s *bfa_fcxp_alloc(void *bfad_fcxp, struct bfa_s *bfa,
+struct bfa_fcxp_s *bfa_fcxp_req_rsp_alloc(void *bfad_fcxp, struct bfa_s *bfa,
int nreq_sgles, int nrsp_sgles,
bfa_fcxp_get_sgaddr_t get_req_sga,
bfa_fcxp_get_sglen_t get_req_sglen,
bfa_fcxp_get_sgaddr_t get_rsp_sga,
- bfa_fcxp_get_sglen_t get_rsp_sglen);
-void bfa_fcxp_alloc_wait(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe,
+ bfa_fcxp_get_sglen_t get_rsp_sglen,
+ bfa_boolean_t req);
+void bfa_fcxp_req_rsp_alloc_wait(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe,
bfa_fcxp_alloc_cbfn_t alloc_cbfn,
void *cbarg, void *bfad_fcxp,
int nreq_sgles, int nrsp_sgles,
bfa_fcxp_get_sgaddr_t get_req_sga,
bfa_fcxp_get_sglen_t get_req_sglen,
bfa_fcxp_get_sgaddr_t get_rsp_sga,
- bfa_fcxp_get_sglen_t get_rsp_sglen);
+ bfa_fcxp_get_sglen_t get_rsp_sglen,
+ bfa_boolean_t req);
void bfa_fcxp_walloc_cancel(struct bfa_s *bfa,
struct bfa_fcxp_wqe_s *wqe);
void bfa_fcxp_discard(struct bfa_fcxp_s *fcxp);