From: Amir Vadai <amirv@mellanox.co.il>
Date: Mon, 7 Mar 2011 11:11:59 +0000 (+0200)
Subject: sdp: make SDP_RX_SIZE a module parameter
X-Git-Tag: v4.1.12-92~264^2~5^2~26
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c238c76aa5279f02711b3b4de1036d99314eba33;p=users%2Fjedix%2Flinux-maple.git

sdp: make SDP_RX_SIZE a module parameter

Signed-off-by: Amir Vadai <amirv@mellanox.co.il>
---

diff --git a/drivers/infiniband/ulp/sdp/sdp.h b/drivers/infiniband/ulp/sdp/sdp.h
index 40231a07a35b..02cf8f0e6f42 100644
--- a/drivers/infiniband/ulp/sdp/sdp.h
+++ b/drivers/infiniband/ulp/sdp/sdp.h
@@ -69,8 +69,8 @@
 #define SDP_FIN_WAIT_TIMEOUT (60 * HZ) /* like TCP_FIN_TIMEOUT */
 #define SDP_CMA_TIMEWAIT_TIMEOUT (150 * HZ)
 
+extern int sdp_rx_size;
 #define SDP_TX_SIZE 0x40
-#define SDP_RX_SIZE 0x40
 #define SDP_DEF_INLINE_THRESH 256
 
 #define SDP_FMR_SIZE (MIN(0x1000, PAGE_SIZE) / sizeof(u64))
diff --git a/drivers/infiniband/ulp/sdp/sdp_cma.c b/drivers/infiniband/ulp/sdp/sdp_cma.c
index 7ab188c6198e..ed08df5511e4 100644
--- a/drivers/infiniband/ulp/sdp/sdp_cma.c
+++ b/drivers/infiniband/ulp/sdp/sdp_cma.c
@@ -52,6 +52,9 @@
 
 #define SDP_MAJV_MINV 0x22
 
+SDP_MODPARAM_INT(sdp_rx_size, 0x40, "HW rx queue size (max num of credits)."
+		" Must be power of 2.");
+
 SDP_MODPARAM_SINT(sdp_retry_count, 5, "IB layer retry count");
 
 SDP_MODPARAM_SINT(sdp_link_layer_ib_only, 0, "Support only link layer of "
@@ -88,7 +91,7 @@ static int sdp_init_qp(struct sock *sk, struct rdma_cm_id *id)
 	struct ib_qp_init_attr qp_init_attr = {
 		.event_handler = sdp_qp_event_handler,
 		.cap.max_send_wr = SDP_TX_SIZE,
-		.cap.max_recv_wr = SDP_RX_SIZE,
+		.cap.max_recv_wr = sdp_rx_size,
 		.cap.max_inline_data = sdp_inline_thresh,
         	.sq_sig_type = IB_SIGNAL_REQ_WR,
         	.qp_type = IB_QPT_RC,
diff --git a/drivers/infiniband/ulp/sdp/sdp_rx.c b/drivers/infiniband/ulp/sdp/sdp_rx.c
index e6cd2293138b..4ecd0877259c 100644
--- a/drivers/infiniband/ulp/sdp/sdp_rx.c
+++ b/drivers/infiniband/ulp/sdp/sdp_rx.c
@@ -181,7 +181,7 @@ static int sdp_post_recv(struct sdp_sock *ssk)
 	sdp_prf(sk_ssk(ssk), skb, "Posting skb");
 	h = (struct sdp_bsdh *)skb->head;
 
-	rx_req = ssk->rx_ring.buffer + (id & (SDP_RX_SIZE - 1));
+	rx_req = ssk->rx_ring.buffer + (id & (sdp_rx_size - 1));
 	rx_req->skb = skb;
 
 	for (i = 0; i < ssk->recv_frags; ++i) {
@@ -271,7 +271,7 @@ static inline int sdp_post_recvs_needed(struct sdp_sock *ssk)
 	if (unlikely(!ssk->qp_active))
 		return 0;
 
-	if  (likely(posted >= SDP_RX_SIZE))
+	if  (likely(posted >= sdp_rx_size))
 		return 0;
 
 	if (unlikely(posted < SDP_MIN_TX_CREDITS))
@@ -459,7 +459,7 @@ static struct sk_buff *sdp_recv_completion(struct sdp_sock *ssk, int id, int len
 	}
 
 	dev = ssk->ib_device;
-	rx_req = &ssk->rx_ring.buffer[id & (SDP_RX_SIZE - 1)];
+	rx_req = &ssk->rx_ring.buffer[id & (sdp_rx_size - 1)];
 	skb = rx_req->skb;
 	sdp_reuse_sdp_buf(ssk, rx_req, len);
 
@@ -849,7 +849,7 @@ static void sdp_rx_ring_purge(struct sdp_sock *ssk)
 		__kfree_skb(skb);
 	}
 
-	for (id = 0; id < SDP_RX_SIZE; id++) {
+	for (id = 0; id < sdp_rx_size; id++) {
 		struct sdp_buf *sbuf = &ssk->rx_ring.buffer[id];
 
 		for (i = 1; i < SDP_MAX_SEND_SGES; i++) {
@@ -886,17 +886,17 @@ int sdp_rx_ring_create(struct sdp_sock *ssk, struct ib_device *device)
 	atomic_set(&ssk->rx_ring.tail, 1);
 
 	ssk->rx_ring.buffer = kzalloc(
-			sizeof *ssk->rx_ring.buffer * SDP_RX_SIZE, GFP_KERNEL);
+			sizeof *ssk->rx_ring.buffer * sdp_rx_size, GFP_KERNEL);
 	if (!ssk->rx_ring.buffer) {
 		sdp_warn(sk_ssk(ssk),
 			"Unable to allocate RX Ring size %zd.\n",
-			 sizeof(*ssk->rx_ring.buffer) * SDP_RX_SIZE);
+			 sizeof(*ssk->rx_ring.buffer) * sdp_rx_size);
 
 		return -ENOMEM;
 	}
 
 	rx_cq = ib_create_cq(device, sdp_rx_irq, sdp_rx_cq_event_handler,
-			  sk_ssk(ssk), SDP_RX_SIZE, IB_CQ_VECTOR_LEAST_ATTACHED);
+			  sk_ssk(ssk), sdp_rx_size, IB_CQ_VECTOR_LEAST_ATTACHED);
 
 	if (IS_ERR(rx_cq)) {
 		rc = PTR_ERR(rx_cq);