[PATCH net-next 0/8] qed*: Light L2 updates

[PATCH net-next 0/8] qed*: Light L2 updates

[Yuval Mintz]

This series does a major overhaul of the LL2 logic in qed.
The single biggest change done here is in #5 where we're changing
the API qed provides for LL2 [both internally in case of storage and
externally in case of RoCE] to become callback-based to allow cleaner
scalability in preperation to the future iWARP submission which would
aadd additional flavors of LL2. It's also the only patch in series
to modify !qed logic [qedr].

Patches prior to that mostly deal with refactoring LL2 code,
encapsulating varaious parameters into structure and re-ordering
of LL2 code. The latter patches add some small missing bits of LL2
ffunctionality.

Dave,

Please consider applying this series to `net-next'.

Thanks,
Yuval

Michal Kalderon (1):
  qed*: LL2 callback operations

Yuval Mintz (7):
  qed: LL2 to use packed information for tx
  qed: Revise ll2 Rx completion
  qed: Cleaner seperation of LL2 inputs
  qed: LL2 code relocations
  qed: No need for LL2 frags indication
  qed: Call rx_release_cb() when flushing LL2
  qed: collect GSI port statistics

 drivers/infiniband/hw/qedr/main.c          |   6 +-
 drivers/infiniband/hw/qedr/qedr.h          |   2 +
 drivers/infiniband/hw/qedr/qedr_cm.c       | 238 ++++++--
 drivers/net/ethernet/qlogic/qed/qed.h      |   1 -
 drivers/net/ethernet/qlogic/qed/qed_ll2.c  | 882 +++++++++++++++--------------
 drivers/net/ethernet/qlogic/qed/qed_ll2.h  | 113 +---
 drivers/net/ethernet/qlogic/qed/qed_roce.c | 295 +---------
 drivers/net/ethernet/qlogic/qed/qed_roce.h |  43 --
 include/linux/qed/qed_ll2_if.h             | 126 +++++
 include/linux/qed/qed_roce_if.h            |  80 +--
 10 files changed, 842 insertions(+), 944 deletions(-)

-- 
2.9.4

[PATCH net-next 1/8] qed: LL2 to use packed information for tx

[Yuval Mintz]

First step in revising the LL2 interface, this declares
qed_ll2_tx_pkt_info as part of the ll2 interface, and uses it for
transmission instead of receiving lots of parameters.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c  | 127 +++++++++++++----------------
 drivers/net/ethernet/qlogic/qed/qed_ll2.h  |  41 ++--------
 drivers/net/ethernet/qlogic/qed/qed_roce.c |  18 ++--
 include/linux/qed/qed_ll2_if.h             |  27 ++++++
 4 files changed, 102 insertions(+), 111 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index f67ed6d..0b75f5d 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -740,12 +740,13 @@ static void
 qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
 			  struct qed_ll2_info *p_ll2_conn)
 {
+	struct qed_ll2_tx_pkt_info tx_pkt;
 	struct qed_ooo_buffer *p_buffer;
-	int rc;
 	u16 l4_hdr_offset_w;
 	dma_addr_t first_frag;
 	u16 parse_flags;
 	u8 bd_flags;
+	int rc;
 
 	/* Submit Tx buffers here */
 	while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn,
@@ -760,13 +761,18 @@ qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
 		SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1);
 		SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1);
 
-		rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 1,
-					       p_buffer->vlan, bd_flags,
-					       l4_hdr_offset_w,
-					       p_ll2_conn->conn.tx_dest, 0,
-					       first_frag,
-					       p_buffer->packet_length,
-					       p_buffer, true);
+		memset(&tx_pkt, 0, sizeof(tx_pkt));
+		tx_pkt.num_of_bds = 1;
+		tx_pkt.vlan = p_buffer->vlan;
+		tx_pkt.bd_flags = bd_flags;
+		tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w;
+		tx_pkt.tx_dest = p_ll2_conn->conn.tx_dest;
+		tx_pkt.first_frag = first_frag;
+		tx_pkt.first_frag_len = p_buffer->packet_length;
+		tx_pkt.cookie = p_buffer;
+
+		rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id,
+					       &tx_pkt, true);
 		if (rc) {
 			qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info,
 						 p_buffer, false);
@@ -1593,20 +1599,18 @@ int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
 static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn,
 					  struct qed_ll2_tx_queue *p_tx,
 					  struct qed_ll2_tx_packet *p_curp,
-					  u8 num_of_bds,
-					  dma_addr_t first_frag,
-					  u16 first_frag_len, void *p_cookie,
+					  struct qed_ll2_tx_pkt_info *pkt,
 					  u8 notify_fw)
 {
 	list_del(&p_curp->list_entry);
-	p_curp->cookie = p_cookie;
-	p_curp->bd_used = num_of_bds;
+	p_curp->cookie = pkt->cookie;
+	p_curp->bd_used = pkt->num_of_bds;
 	p_curp->notify_fw = notify_fw;
 	p_tx->cur_send_packet = p_curp;
 	p_tx->cur_send_frag_num = 0;
 
-	p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = first_frag;
-	p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = first_frag_len;
+	p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag;
+	p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len;
 	p_tx->cur_send_frag_num++;
 }
 
@@ -1614,32 +1618,33 @@ static void
 qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
 				 struct qed_ll2_info *p_ll2,
 				 struct qed_ll2_tx_packet *p_curp,
-				 u8 num_of_bds,
-				 enum core_tx_dest tx_dest,
-				 u16 vlan,
-				 u8 bd_flags,
-				 u16 l4_hdr_offset_w,
-				 enum core_roce_flavor_type roce_flavor,
-				 dma_addr_t first_frag,
-				 u16 first_frag_len)
+				 struct qed_ll2_tx_pkt_info *pkt)
 {
 	struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain;
 	u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain);
 	struct core_tx_bd *start_bd = NULL;
+	enum core_roce_flavor_type roce_flavor;
+	enum core_tx_dest tx_dest;
 	u16 bd_data = 0, frag_idx;
 
+	roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE
+							     : CORE_RROCE;
+
+	tx_dest = (pkt->tx_dest == QED_LL2_TX_DEST_NW) ? CORE_TX_DEST_NW
+						       : CORE_TX_DEST_LB;
+
 	start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
-	start_bd->nw_vlan_or_lb_echo = cpu_to_le16(vlan);
+	start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan);
 	SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W,
-		  cpu_to_le16(l4_hdr_offset_w));
+		  cpu_to_le16(pkt->l4_hdr_offset_w));
 	SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest);
-	bd_data |= bd_flags;
+	bd_data |= pkt->bd_flags;
 	SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1);
-	SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, num_of_bds);
+	SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds);
 	SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor);
 	start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data);
-	DMA_REGPAIR_LE(start_bd->addr, first_frag);
-	start_bd->nbytes = cpu_to_le16(first_frag_len);
+	DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag);
+	start_bd->nbytes = cpu_to_le16(pkt->first_frag_len);
 
 	DP_VERBOSE(p_hwfn,
 		   (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
@@ -1648,17 +1653,17 @@ qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
 		   p_ll2->cid,
 		   p_ll2->conn.conn_type,
 		   prod_idx,
-		   first_frag_len,
-		   num_of_bds,
+		   pkt->first_frag_len,
+		   pkt->num_of_bds,
 		   le32_to_cpu(start_bd->addr.hi),
 		   le32_to_cpu(start_bd->addr.lo));
 
-	if (p_ll2->tx_queue.cur_send_frag_num == num_of_bds)
+	if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds)
 		return;
 
 	/* Need to provide the packet with additional BDs for frags */
 	for (frag_idx = p_ll2->tx_queue.cur_send_frag_num;
-	     frag_idx < num_of_bds; frag_idx++) {
+	     frag_idx < pkt->num_of_bds; frag_idx++) {
 		struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd;
 
 		*p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
@@ -1726,21 +1731,13 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
 
 int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 			      u8 connection_handle,
-			      u8 num_of_bds,
-			      u16 vlan,
-			      u8 bd_flags,
-			      u16 l4_hdr_offset_w,
-			      enum qed_ll2_tx_dest e_tx_dest,
-			      enum qed_ll2_roce_flavor_type qed_roce_flavor,
-			      dma_addr_t first_frag,
-			      u16 first_frag_len, void *cookie, u8 notify_fw)
+			      struct qed_ll2_tx_pkt_info *pkt,
+			      bool notify_fw)
 {
 	struct qed_ll2_tx_packet *p_curp = NULL;
 	struct qed_ll2_info *p_ll2_conn = NULL;
-	enum core_roce_flavor_type roce_flavor;
 	struct qed_ll2_tx_queue *p_tx;
 	struct qed_chain *p_tx_chain;
-	enum core_tx_dest tx_dest;
 	unsigned long flags;
 	int rc = 0;
 
@@ -1750,7 +1747,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 	p_tx = &p_ll2_conn->tx_queue;
 	p_tx_chain = &p_tx->txq_chain;
 
-	if (num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET)
+	if (pkt->num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET)
 		return -EIO;
 
 	spin_lock_irqsave(&p_tx->lock, flags);
@@ -1763,7 +1760,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 	if (!list_empty(&p_tx->free_descq))
 		p_curp = list_first_entry(&p_tx->free_descq,
 					  struct qed_ll2_tx_packet, list_entry);
-	if (p_curp && qed_chain_get_elem_left(p_tx_chain) < num_of_bds)
+	if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds)
 		p_curp = NULL;
 
 	if (!p_curp) {
@@ -1771,26 +1768,10 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 		goto out;
 	}
 
-	tx_dest = e_tx_dest == QED_LL2_TX_DEST_NW ? CORE_TX_DEST_NW :
-						    CORE_TX_DEST_LB;
-	if (qed_roce_flavor == QED_LL2_ROCE) {
-		roce_flavor = CORE_ROCE;
-	} else if (qed_roce_flavor == QED_LL2_RROCE) {
-		roce_flavor = CORE_RROCE;
-	} else {
-		rc = -EINVAL;
-		goto out;
-	}
-
 	/* Prepare packet and BD, and perhaps send a doorbell to FW */
-	qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp,
-				      num_of_bds, first_frag,
-				      first_frag_len, cookie, notify_fw);
-	qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp,
-					 num_of_bds, tx_dest,
-					 vlan, bd_flags, l4_hdr_offset_w,
-					 roce_flavor,
-					 first_frag, first_frag_len);
+	qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw);
+
+	qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt);
 
 	qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
 
@@ -2245,6 +2226,7 @@ static int qed_ll2_stop(struct qed_dev *cdev)
 
 static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb)
 {
+	struct qed_ll2_tx_pkt_info pkt;
 	const skb_frag_t *frag;
 	int rc = -EINVAL, i;
 	dma_addr_t mapping;
@@ -2279,12 +2261,17 @@ static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb)
 		flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT);
 	}
 
-	rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev),
-				       cdev->ll2->handle,
-				       1 + skb_shinfo(skb)->nr_frags,
-				       vlan, flags, 0, QED_LL2_TX_DEST_NW,
-				       0 /* RoCE FLAVOR */,
-				       mapping, skb->len, skb, 1);
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.num_of_bds = 1 + skb_shinfo(skb)->nr_frags;
+	pkt.vlan = vlan;
+	pkt.bd_flags = flags;
+	pkt.tx_dest = QED_LL2_TX_DEST_NW;
+	pkt.first_frag = mapping;
+	pkt.first_frag_len = skb->len;
+	pkt.cookie = skb;
+
+	rc = qed_ll2_prepare_tx_packet(&cdev->hwfns[0], cdev->ll2->handle,
+				       &pkt, 1);
 	if (rc)
 		goto err;
 
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
index 2c07d0e..96af50b 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
@@ -47,12 +47,6 @@
 
 #define QED_MAX_NUM_OF_LL2_CONNECTIONS                    (4)
 
-enum qed_ll2_roce_flavor_type {
-	QED_LL2_ROCE,
-	QED_LL2_RROCE,
-	MAX_QED_LL2_ROCE_FLAVOR_TYPE
-};
-
 enum qed_ll2_conn_type {
 	QED_LL2_TYPE_FCOE,
 	QED_LL2_TYPE_ISCSI,
@@ -64,12 +58,6 @@ enum qed_ll2_conn_type {
 	MAX_QED_LL2_RX_CONN_TYPE
 };
 
-enum qed_ll2_tx_dest {
-	QED_LL2_TX_DEST_NW, /* Light L2 TX Destination to the Network */
-	QED_LL2_TX_DEST_LB, /* Light L2 TX Destination to the Loopback */
-	QED_LL2_TX_DEST_MAX
-};
-
 struct qed_ll2_rx_packet {
 	struct list_head list_entry;
 	struct core_rx_bd_with_buff_len *rxq_bd;
@@ -216,35 +204,16 @@ int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
  *				      to prepare Tx packet submission to FW.
  *
  * @param p_hwfn
- * @param connection_handle	LL2 connection's handle obtained from
- *				qed_ll2_require_connection
- * @param num_of_bds		a number of requested BD equals a number of
- *				fragments in Tx packet
- * @param vlan			VLAN to insert to packet (if insertion set)
- * @param bd_flags
- * @param l4_hdr_offset_w	L4 Header Offset from start of packet
- *				(in words). This is needed if both l4_csum
- *				and ipv6_ext are set
- * @param e_tx_dest             indicates if the packet is to be transmitted via
- *                              loopback or to the network
- * @param first_frag
- * @param first_frag_len
- * @param cookie
- *
- * @param notify_fw
+ * @param connection_handle
+ * @param pkt - info regarding the tx packet
+ * @param notify_fw - issue doorbell to fw for this packet
  *
  * @return 0 on success, failure otherwise
  */
 int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 			      u8 connection_handle,
-			      u8 num_of_bds,
-			      u16 vlan,
-			      u8 bd_flags,
-			      u16 l4_hdr_offset_w,
-			      enum qed_ll2_tx_dest e_tx_dest,
-			      enum qed_ll2_roce_flavor_type qed_roce_flavor,
-			      dma_addr_t first_frag,
-			      u16 first_frag_len, void *cookie, u8 notify_fw);
+			      struct qed_ll2_tx_pkt_info *pkt,
+			      bool notify_fw);
 
 /**
  * @brief qed_ll2_release_connection -	releases resources
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index b9434b7..afc63c0 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -2937,6 +2937,7 @@ static int qed_roce_ll2_tx(struct qed_dev *cdev,
 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
 	struct qed_roce_ll2_info *roce_ll2 = hwfn->ll2;
 	enum qed_ll2_roce_flavor_type qed_roce_flavor;
+	struct qed_ll2_tx_pkt_info ll2_pkt;
 	u8 flags = 0;
 	int rc;
 	int i;
@@ -2955,11 +2956,18 @@ static int qed_roce_ll2_tx(struct qed_dev *cdev,
 		flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT);
 
 	/* Tx header */
-	rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev), roce_ll2->handle,
-				       1 + pkt->n_seg, 0, flags, 0,
-				       QED_LL2_TX_DEST_NW,
-				       qed_roce_flavor, pkt->header.baddr,
-				       pkt->header.len, pkt, 1);
+	memset(&ll2_pkt, 0, sizeof(ll2_pkt));
+	ll2_pkt.num_of_bds = 1 + pkt->n_seg;
+	ll2_pkt.bd_flags = flags;
+	ll2_pkt.tx_dest = QED_LL2_TX_DEST_NW;
+	ll2_pkt.qed_roce_flavor = qed_roce_flavor;
+	ll2_pkt.first_frag = pkt->header.baddr;
+	ll2_pkt.first_frag_len = pkt->header.len;
+	ll2_pkt.cookie = pkt;
+
+	rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev),
+				       roce_ll2->handle,
+				       &ll2_pkt, 1);
 	if (rc) {
 		DP_ERR(cdev, "roce ll2 tx: header failed (rc=%d)\n", rc);
 		return QED_ROCE_TX_HEAD_FAILURE;
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index 4fb4666..1a9a5b9 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -43,6 +43,18 @@
 #include <linux/slab.h>
 #include <linux/qed/qed_if.h>
 
+enum qed_ll2_roce_flavor_type {
+	QED_LL2_ROCE,
+	QED_LL2_RROCE,
+	MAX_QED_LL2_ROCE_FLAVOR_TYPE
+};
+
+enum qed_ll2_tx_dest {
+	QED_LL2_TX_DEST_NW, /* Light L2 TX Destination to the Network */
+	QED_LL2_TX_DEST_LB, /* Light L2 TX Destination to the Loopback */
+	QED_LL2_TX_DEST_MAX
+};
+
 struct qed_ll2_stats {
 	u64 gsi_invalid_hdr;
 	u64 gsi_invalid_pkt_length;
@@ -67,6 +79,21 @@ struct qed_ll2_stats {
 	u64 sent_bcast_pkts;
 };
 
+struct qed_ll2_tx_pkt_info {
+	u8 num_of_bds;
+	u16 vlan;
+	u8 bd_flags;
+	u16 l4_hdr_offset_w;	/* from start of packet */
+	enum qed_ll2_tx_dest tx_dest;
+	enum qed_ll2_roce_flavor_type qed_roce_flavor;
+	dma_addr_t first_frag;
+	u16 first_frag_len;
+	bool enable_ip_cksum;
+	bool enable_l4_cksum;
+	bool calc_ip_len;
+	void *cookie;
+};
+
 #define QED_LL2_UNUSED_HANDLE   (0xff)
 
 struct qed_ll2_cb_ops {
-- 
2.9.4

Re: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[David Miller]

From: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Date: Thu, 8 Jun 2017 19:13:16 +0300

> @@ -67,6 +79,21 @@ struct qed_ll2_stats {
>  	u64 sent_bcast_pkts;
>  };
>  
> +struct qed_ll2_tx_pkt_info {
> +	u8 num_of_bds;
> +	u16 vlan;
> +	u8 bd_flags;
> +	u16 l4_hdr_offset_w;	/* from start of packet */
> +	enum qed_ll2_tx_dest tx_dest;
> +	enum qed_ll2_roce_flavor_type qed_roce_flavor;
> +	dma_addr_t first_frag;
> +	u16 first_frag_len;
> +	bool enable_ip_cksum;
> +	bool enable_l4_cksum;
> +	bool calc_ip_len;
> +	void *cookie;
> +};
> +

This layout is extremely inefficient, with lots of padding in between
struct members.

Group small u8 members and u16 members together so that they consume
full 32-bit areas so you can eliminate all of the padding.
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RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[Mintz, Yuval]

> > +struct qed_ll2_tx_pkt_info {
> > +	u8 num_of_bds;
> > +	u16 vlan;
> > +	u8 bd_flags;
> > +	u16 l4_hdr_offset_w;	/* from start of packet */
> > +	enum qed_ll2_tx_dest tx_dest;
> > +	enum qed_ll2_roce_flavor_type qed_roce_flavor;
> > +	dma_addr_t first_frag;
> > +	u16 first_frag_len;
> > +	bool enable_ip_cksum;
> > +	bool enable_l4_cksum;
> > +	bool calc_ip_len;
> > +	void *cookie;
> > +};
> > +
> 
> This layout is extremely inefficient, with lots of padding in between struct
> members.
> 
> Group small u8 members and u16 members together so that they consume
> full 32-bit areas so you can eliminate all of the padding.

While I can mend the holes, the total structure size doesn't really change:

struct qed_ll2_tx_pkt_info {
        u8                         num_of_bds;           /*     0     1 */

        /* XXX 1 byte hole, try to pack */

        u16                        vlan;                 /*     2     2 */
        u8                         bd_flags;             /*     4     1 */

        /* XXX 1 byte hole, try to pack */

        u16                        l4_hdr_offset_w;      /*     6     2 */
        enum qed_ll2_tx_dest       tx_dest;              /*     8     4 */
        enum qed_ll2_roce_flavor_type qed_roce_flavor;   /*    12     4 */
        dma_addr_t                 first_frag;           /*    16     8 */
        u16                        first_frag_len;       /*    24     2 */
        bool                       enable_ip_cksum;      /*    26     1 */
        bool                       enable_l4_cksum;      /*    27     1 */
        bool                       calc_ip_len;          /*    28     1 */

        /* XXX 3 bytes hole, try to pack */

        void *                     cookie;               /*    32     8 */

        /* size: 40, cachelines: 1, members: 12 */
        /* sum members: 35, holes: 3, sum holes: 5 */
        /* last cacheline: 40 bytes */
};

Becomes:

struct qed_ll2_tx_pkt_info {
        void *                     cookie;               /*     0     8 */
        dma_addr_t                 first_frag;           /*     8     8 */
        enum qed_ll2_tx_dest       tx_dest;              /*    16     4 */
        enum qed_ll2_roce_flavor_type qed_roce_flavor;   /*    20     4 */
        u16                        vlan;                 /*    24     2 */
        u16                        l4_hdr_offset_w;      /*    26     2 */
        u16                        first_frag_len;       /*    28     2 */
        u8                         num_of_bds;           /*    30     1 */
        u8                         bd_flags;             /*    31     1 */
        bool                       enable_ip_cksum;      /*    32     1 */
        bool                       enable_l4_cksum;      /*    33     1 */
        bool                       calc_ip_len;          /*    34     1 */

        /* size: 40, cachelines: 1, members: 12 */
        /* padding: 5 */
        /* last cacheline: 40 bytes */
};

I'm going to send the changed version in V2 as as there's no harm to it,
[+ we *can* reduce the size of qed_ll2_comp_rx_data you commented
for patch #2 in series]

But one thing I thought of asking - do we consider layouts of relatively
insignificant structures to be some golden coding standard?

Re: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[David Miller]

From: "Mintz, Yuval" <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Date: Fri, 9 Jun 2017 07:08:54 +0000

> But one thing I thought of asking - do we consider layouts of relatively
> insignificant structures to be some golden coding standard?

It just shows lack of thought when writing things.

I want to see code that shows the author put some care into it
and didn't just slap things together.

Thank you.
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RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[David Laight]

From: David Miller
> Sent: 09 June 2017 00:24
> 
> From: Yuval Mintz <Yuval.Mintz@cavium.com>
> Date: Thu, 8 Jun 2017 19:13:16 +0300
> 
> > @@ -67,6 +79,21 @@ struct qed_ll2_stats {
> >  	u64 sent_bcast_pkts;
> >  };
> >
> > +struct qed_ll2_tx_pkt_info {
> > +	u8 num_of_bds;
> > +	u16 vlan;
> > +	u8 bd_flags;
> > +	u16 l4_hdr_offset_w;	/* from start of packet */
> > +	enum qed_ll2_tx_dest tx_dest;
> > +	enum qed_ll2_roce_flavor_type qed_roce_flavor;
> > +	dma_addr_t first_frag;
> > +	u16 first_frag_len;
> > +	bool enable_ip_cksum;
> > +	bool enable_l4_cksum;
> > +	bool calc_ip_len;
> > +	void *cookie;
> > +};
> > +
> 
> This layout is extremely inefficient, with lots of padding in between
> struct members.
> 
> Group small u8 members and u16 members together so that they consume
> full 32-bit areas so you can eliminate all of the padding.

I'd also query the use of u16 sizes/lengths, any arithmetic on u16 (and u8)
variables is likely to generate extra code (on non-x86).
You are using 32 bits for the 'enum' - I bet the values fit in 8 bits,
so aren't really worried about size.

If size did matter you can easily get the above down to 32 bytes.

	David

RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[Mintz, Yuval]

> -----Original Message-----
> From: David Laight [mailto:David.Laight@ACULAB.COM]
> Sent: Friday, June 09, 2017 10:28 AM
> To: 'David Miller' <davem@davemloft.net>; Mintz, Yuval
> <Yuval.Mintz@cavium.com>
> Cc: netdev@vger.kernel.org; linux-rdma@vger.kernel.org; Kalderon, Michal
> <Michal.Kalderon@cavium.com>
> Subject: RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx
> 
> From: David Miller
> > Sent: 09 June 2017 00:24
> >
> > From: Yuval Mintz <Yuval.Mintz@cavium.com>
> > Date: Thu, 8 Jun 2017 19:13:16 +0300
> >
> > > @@ -67,6 +79,21 @@ struct qed_ll2_stats {
> > >  	u64 sent_bcast_pkts;
> > >  };
> > >
> > > +struct qed_ll2_tx_pkt_info {
> > > +	u8 num_of_bds;
> > > +	u16 vlan;
> > > +	u8 bd_flags;
> > > +	u16 l4_hdr_offset_w;	/* from start of packet */
> > > +	enum qed_ll2_tx_dest tx_dest;
> > > +	enum qed_ll2_roce_flavor_type qed_roce_flavor;
> > > +	dma_addr_t first_frag;
> > > +	u16 first_frag_len;
> > > +	bool enable_ip_cksum;
> > > +	bool enable_l4_cksum;
> > > +	bool calc_ip_len;
> > > +	void *cookie;
> > > +};
> > > +
> >
> > This layout is extremely inefficient, with lots of padding in between
> > struct members.
> >
> > Group small u8 members and u16 members together so that they consume
> > full 32-bit areas so you can eliminate all of the padding.
> 
> I'd also query the use of u16 sizes/lengths, any arithmetic on u16 (and u8)
> variables is likely to generate extra code (on non-x86).
> You are using 32 bits for the 'enum' - I bet the values fit in 8 bits, so aren't
> really worried about size.
> 
> If size did matter you can easily get the above down to 32 bytes.

You're right, and that's exactly the point -  since this is not data-path critical
I don't see why the size/efficiency should matter [greatly].

RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx

[David Laight]

From: Mintz, Yuval
> Sent: 09 June 2017 08:52
> > From: David Laight [mailto:David.Laight-ZS65k/vG3HxXrIkS9f7CXA@public.gmane.org]
> > Sent: Friday, June 09, 2017 10:28 AM
> > To: 'David Miller' <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>; Mintz, Yuval
> > <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> > Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; Kalderon, Michal
> > <Michal.Kalderon-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> > Subject: RE: [PATCH net-next 1/8] qed: LL2 to use packed information for tx
> >
> > From: David Miller
> > > Sent: 09 June 2017 00:24
> > >
> > > From: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> > > Date: Thu, 8 Jun 2017 19:13:16 +0300
> > >
> > > > @@ -67,6 +79,21 @@ struct qed_ll2_stats {
> > > >  	u64 sent_bcast_pkts;
> > > >  };
> > > >
> > > > +struct qed_ll2_tx_pkt_info {
> > > > +	u8 num_of_bds;
> > > > +	u16 vlan;
> > > > +	u8 bd_flags;
> > > > +	u16 l4_hdr_offset_w;	/* from start of packet */
> > > > +	enum qed_ll2_tx_dest tx_dest;
> > > > +	enum qed_ll2_roce_flavor_type qed_roce_flavor;
> > > > +	dma_addr_t first_frag;
> > > > +	u16 first_frag_len;
> > > > +	bool enable_ip_cksum;
> > > > +	bool enable_l4_cksum;
> > > > +	bool calc_ip_len;
> > > > +	void *cookie;
> > > > +};
> > > > +
> > >
> > > This layout is extremely inefficient, with lots of padding in between
> > > struct members.
> > >
> > > Group small u8 members and u16 members together so that they consume
> > > full 32-bit areas so you can eliminate all of the padding.
> >
> > I'd also query the use of u16 sizes/lengths, any arithmetic on u16 (and u8)
> > variables is likely to generate extra code (on non-x86).
> > You are using 32 bits for the 'enum' - I bet the values fit in 8 bits, so aren't
> > really worried about size.
> >
> > If size did matter you can easily get the above down to 32 bytes.
> 
> You're right, and that's exactly the point -  since this is not data-path critical
> I don't see why the size/efficiency should matter [greatly].

It is just good practise so that it happens automatically when it does matter.
Just swapping 'vlan' and 'bd_flags' would make it look much better.

	David

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[PATCH net-next 2/8] qed: Revise ll2 Rx completion

[Yuval Mintz]

This introduces qed_ll2_comp_rx_data as a public struct
and moves handling of Rx packets in LL2 into using it.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 84 ++++++++++++++++++-------------
 include/linux/qed/qed_ll2_if.h            | 25 +++++++++
 2 files changed, 75 insertions(+), 34 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 0b75f5d..46b71a6 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -165,41 +165,33 @@ static void qed_ll2_kill_buffers(struct qed_dev *cdev)
 }
 
 static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
-					u8 connection_handle,
-					struct qed_ll2_rx_packet *p_pkt,
-					struct core_rx_fast_path_cqe *p_cqe,
-					bool b_last_packet)
+				 struct qed_ll2_comp_rx_data *data)
 {
-	u16 packet_length = le16_to_cpu(p_cqe->packet_length);
-	struct qed_ll2_buffer *buffer = p_pkt->cookie;
+	struct qed_ll2_buffer *buffer = data->cookie;
 	struct qed_dev *cdev = p_hwfn->cdev;
-	u16 vlan = le16_to_cpu(p_cqe->vlan);
-	u32 opaque_data_0, opaque_data_1;
-	u8 pad = p_cqe->placement_offset;
 	dma_addr_t new_phys_addr;
 	struct sk_buff *skb;
 	bool reuse = false;
 	int rc = -EINVAL;
 	u8 *new_data;
 
-	opaque_data_0 = le32_to_cpu(p_cqe->opaque_data.data[0]);
-	opaque_data_1 = le32_to_cpu(p_cqe->opaque_data.data[1]);
-
 	DP_VERBOSE(p_hwfn,
 		   (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA),
 		   "Got an LL2 Rx completion: [Buffer at phys 0x%llx, offset 0x%02x] Length 0x%04x Parse_flags 0x%04x vlan 0x%04x Opaque data [0x%08x:0x%08x]\n",
-		   (u64)p_pkt->rx_buf_addr, pad, packet_length,
-		   le16_to_cpu(p_cqe->parse_flags.flags), vlan,
-		   opaque_data_0, opaque_data_1);
+		   (u64)data->rx_buf_addr,
+		   data->u.placement_offset,
+		   data->length.packet_length,
+		   data->parse_flags,
+		   data->vlan, data->opaque_data_0, data->opaque_data_1);
 
 	if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) {
 		print_hex_dump(KERN_INFO, "",
 			       DUMP_PREFIX_OFFSET, 16, 1,
-			       buffer->data, packet_length, false);
+			       buffer->data, data->length.packet_length, false);
 	}
 
 	/* Determine if data is valid */
-	if (packet_length < ETH_HLEN)
+	if (data->length.packet_length < ETH_HLEN)
 		reuse = true;
 
 	/* Allocate a replacement for buffer; Reuse upon failure */
@@ -219,9 +211,9 @@ static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
 		goto out_post;
 	}
 
-	pad += NET_SKB_PAD;
-	skb_reserve(skb, pad);
-	skb_put(skb, packet_length);
+	data->u.placement_offset += NET_SKB_PAD;
+	skb_reserve(skb, data->u.placement_offset);
+	skb_put(skb, data->length.packet_length);
 	skb_checksum_none_assert(skb);
 
 	/* Get parital ethernet information instead of eth_type_trans(),
@@ -232,10 +224,12 @@ static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
 
 	/* Pass SKB onward */
 	if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) {
-		if (vlan)
-			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan);
+		if (data->vlan)
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+					       data->vlan);
 		cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb,
-				      opaque_data_0, opaque_data_1);
+				      data->opaque_data_0,
+				      data->opaque_data_1);
 	}
 
 	/* Update Buffer information and update FW producer */
@@ -472,33 +466,55 @@ qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn,
 	return 0;
 }
 
-static int qed_ll2_rxq_completion_reg(struct qed_hwfn *p_hwfn,
-				      struct qed_ll2_info *p_ll2_conn,
-				      union core_rx_cqe_union *p_cqe,
-				      unsigned long *p_lock_flags,
-				      bool b_last_cqe)
+static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
+				  union core_rx_cqe_union *p_cqe,
+				  struct qed_ll2_comp_rx_data *data)
+{
+	data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags);
+	data->length.packet_length =
+	    le16_to_cpu(p_cqe->rx_cqe_fp.packet_length);
+	data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan);
+	data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]);
+	data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]);
+	data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset;
+}
+
+static int
+qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
+			      struct qed_ll2_info *p_ll2_conn,
+			      union core_rx_cqe_union *p_cqe,
+			      unsigned long *p_lock_flags, bool b_last_cqe)
 {
 	struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
 	struct qed_ll2_rx_packet *p_pkt = NULL;
+	struct qed_ll2_comp_rx_data data;
 
 	if (!list_empty(&p_rx->active_descq))
 		p_pkt = list_first_entry(&p_rx->active_descq,
 					 struct qed_ll2_rx_packet, list_entry);
 	if (!p_pkt) {
 		DP_NOTICE(p_hwfn,
-			  "LL2 Rx completion but active_descq is empty\n");
+			  "[%d] LL2 Rx completion but active_descq is empty\n",
+			  p_ll2_conn->conn.conn_type);
+
 		return -EIO;
 	}
 	list_del(&p_pkt->list_entry);
 
+	qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
 	if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
 		DP_NOTICE(p_hwfn,
 			  "Mismatch between active_descq and the LL2 Rx chain\n");
+
 	list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
 
+	data.connection_handle = p_ll2_conn->my_id;
+	data.cookie = p_pkt->cookie;
+	data.rx_buf_addr = p_pkt->rx_buf_addr;
+	data.b_last_packet = b_last_cqe;
+
 	spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
-	qed_ll2b_complete_rx_packet(p_hwfn, p_ll2_conn->my_id,
-				    p_pkt, &p_cqe->rx_cqe_fp, b_last_cqe);
+	qed_ll2b_complete_rx_packet(p_hwfn, &data);
 	spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
 
 	return 0;
@@ -538,9 +554,9 @@ static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
 							cqe, flags, b_last_cqe);
 			break;
 		case CORE_RX_CQE_TYPE_REGULAR:
-			rc = qed_ll2_rxq_completion_reg(p_hwfn, p_ll2_conn,
-							cqe, &flags,
-							b_last_cqe);
+			rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
+							   cqe, &flags,
+							   b_last_cqe);
 			break;
 		default:
 			rc = -EIO;
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index 1a9a5b9..5145278 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -79,6 +79,31 @@ struct qed_ll2_stats {
 	u64 sent_bcast_pkts;
 };
 
+struct qed_ll2_comp_rx_data {
+	u8 connection_handle;
+	void *cookie;
+	dma_addr_t rx_buf_addr;
+	u16 parse_flags;
+	u16 vlan;
+	bool b_last_packet;
+
+	union {
+		u8 placement_offset;
+		u8 data_length_error;
+	} u;
+	union {
+		u16 packet_length;
+		u16 data_length;
+	} length;
+
+	u32 opaque_data_0;
+	u32 opaque_data_1;
+
+	/* GSI only */
+	u32 gid_dst[4];
+	u16 qp_id;
+};
+
 struct qed_ll2_tx_pkt_info {
 	u8 num_of_bds;
 	u16 vlan;
-- 
2.9.4

Re: [PATCH net-next 2/8] qed: Revise ll2 Rx completion

[David Miller]

From: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Date: Thu, 8 Jun 2017 19:13:17 +0300

> +struct qed_ll2_comp_rx_data {
> +	u8 connection_handle;
> +	void *cookie;
> +	dma_addr_t rx_buf_addr;
> +	u16 parse_flags;
> +	u16 vlan;
> +	bool b_last_packet;
> +
> +	union {
> +		u8 placement_offset;
> +		u8 data_length_error;
> +	} u;
> +	union {
> +		u16 packet_length;
> +		u16 data_length;
> +	} length;
> +
> +	u32 opaque_data_0;
> +	u32 opaque_data_1;
> +
> +	/* GSI only */
> +	u32 gid_dst[4];
> +	u16 qp_id;
> +};
> +

Again, a lot of unnecessary padding in the structure due to suboptimal
member ordering.

Please fix this.

Thank you.
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[PATCH net-next 4/8] qed: LL2 code relocations

[Yuval Mintz]

Instead of having the OOO logic packetd, divide it with rest of code
according to establish/release flows.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 58 +++++++++++++++----------------
 1 file changed, 28 insertions(+), 30 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index fcf4ea9..f3aad61 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -896,36 +896,6 @@ static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 	return 0;
 }
 
-static void
-qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
-				 struct qed_ll2_info *p_ll2_conn)
-{
-	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
-		return;
-
-	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
-	qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
-}
-
-static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
-					   struct qed_ll2_info *p_ll2_conn)
-{
-	struct qed_ooo_buffer *p_buffer;
-
-	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
-		return;
-
-	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
-	while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
-						   p_hwfn->p_ooo_info))) {
-		dma_free_coherent(&p_hwfn->cdev->pdev->dev,
-				  p_buffer->rx_buffer_size,
-				  p_buffer->rx_buffer_virt_addr,
-				  p_buffer->rx_buffer_phys_addr);
-		kfree(p_buffer);
-	}
-}
-
 static void qed_ll2_stop_ooo(struct qed_dev *cdev)
 {
 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
@@ -1397,6 +1367,16 @@ static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn,
 	return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error);
 }
 
+static void
+qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
+				 struct qed_ll2_info *p_ll2_conn)
+{
+	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
+		return;
+
+	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
+	qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
+}
 int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
 {
 	struct qed_ll2_info *p_ll2_conn;
@@ -1857,6 +1837,24 @@ int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
 	return rc;
 }
 
+static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
+					   struct qed_ll2_info *p_ll2_conn)
+{
+	struct qed_ooo_buffer *p_buffer;
+
+	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
+		return;
+
+	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
+	while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
+						   p_hwfn->p_ooo_info))) {
+		dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+				  p_buffer->rx_buffer_size,
+				  p_buffer->rx_buffer_virt_addr,
+				  p_buffer->rx_buffer_phys_addr);
+		kfree(p_buffer);
+	}
+}
 void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
 {
 	struct qed_ll2_info *p_ll2_conn = NULL;
-- 
2.9.4

[PATCH net-next 5/8] qed*: LL2 callback operations

[Yuval Mintz]

From: Michal Kalderon <Michal.Kalderon@cavium.com>

LL2 today is interrupt driven - when tx/rx completion arrives [or any
other indication], qed needs to operate on the connection and pass
the information to the protocol-driver [or internal qed consumer].
Since we have several flavors of ll2 employeed by the driver,
each handler needs to do an if-else to determine the right functionality
to use based on the connection type.

In order to make things more scalable [given that we're going to add
additional types of ll2 flavors] move the infrastrucutre into using
a callback-based approach - the callbacks would be provided as part
of the connection's initialization parameters.

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
---
 drivers/infiniband/hw/qedr/main.c          |   6 +-
 drivers/infiniband/hw/qedr/qedr.h          |   2 +
 drivers/infiniband/hw/qedr/qedr_cm.c       | 238 ++++++++++++++++------
 drivers/net/ethernet/qlogic/qed/qed.h      |   1 -
 drivers/net/ethernet/qlogic/qed/qed_ll2.c  | 197 +++++++++----------
 drivers/net/ethernet/qlogic/qed/qed_ll2.h  |  34 ++--
 drivers/net/ethernet/qlogic/qed/qed_roce.c | 304 ++---------------------------
 drivers/net/ethernet/qlogic/qed/qed_roce.h |  43 ----
 include/linux/qed/qed_ll2_if.h             |  36 ++++
 include/linux/qed/qed_roce_if.h            |  80 +++-----
 10 files changed, 384 insertions(+), 557 deletions(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 6a72095..485c1fe 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -886,9 +886,9 @@ static void qedr_mac_address_change(struct qedr_dev *dev)
 	memcpy(&sgid->raw[8], guid, sizeof(guid));
 
 	/* Update LL2 */
-	rc = dev->ops->roce_ll2_set_mac_filter(dev->cdev,
-					       dev->gsi_ll2_mac_address,
-					       dev->ndev->dev_addr);
+	rc = dev->ops->ll2_set_mac_filter(dev->cdev,
+					  dev->gsi_ll2_mac_address,
+					  dev->ndev->dev_addr);
 
 	ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr);
 
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index aa08c76..80333ec 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -150,6 +150,8 @@ struct qedr_dev {
 	u32			dp_module;
 	u8			dp_level;
 	u8			num_hwfns;
+	u8			gsi_ll2_handle;
+
 	uint			wq_multiplier;
 	u8			gsi_ll2_mac_address[ETH_ALEN];
 	int			gsi_qp_created;
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.c b/drivers/infiniband/hw/qedr/qedr_cm.c
index d86dbe8..eb3dce7 100644
--- a/drivers/infiniband/hw/qedr/qedr_cm.c
+++ b/drivers/infiniband/hw/qedr/qedr_cm.c
@@ -64,9 +64,14 @@ void qedr_store_gsi_qp_cq(struct qedr_dev *dev, struct qedr_qp *qp,
 	dev->gsi_qp = qp;
 }
 
-void qedr_ll2_tx_cb(void *_qdev, struct qed_roce_ll2_packet *pkt)
+void qedr_ll2_complete_tx_packet(void *cxt,
+				 u8 connection_handle,
+				 void *cookie,
+				 dma_addr_t first_frag_addr,
+				 bool b_last_fragment, bool b_last_packet)
 {
-	struct qedr_dev *dev = (struct qedr_dev *)_qdev;
+	struct qedr_dev *dev = (struct qedr_dev *)cxt;
+	struct qed_roce_ll2_packet *pkt = cookie;
 	struct qedr_cq *cq = dev->gsi_sqcq;
 	struct qedr_qp *qp = dev->gsi_qp;
 	unsigned long flags;
@@ -88,20 +93,26 @@ void qedr_ll2_tx_cb(void *_qdev, struct qed_roce_ll2_packet *pkt)
 		(*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
 }
 
-void qedr_ll2_rx_cb(void *_dev, struct qed_roce_ll2_packet *pkt,
-		    struct qed_roce_ll2_rx_params *params)
+void qedr_ll2_complete_rx_packet(void *cxt,
+				 struct qed_ll2_comp_rx_data *data)
 {
-	struct qedr_dev *dev = (struct qedr_dev *)_dev;
+	struct qedr_dev *dev = (struct qedr_dev *)cxt;
 	struct qedr_cq *cq = dev->gsi_rqcq;
 	struct qedr_qp *qp = dev->gsi_qp;
 	unsigned long flags;
 
 	spin_lock_irqsave(&qp->q_lock, flags);
 
-	qp->rqe_wr_id[qp->rq.gsi_cons].rc = params->rc;
-	qp->rqe_wr_id[qp->rq.gsi_cons].vlan_id = params->vlan_id;
-	qp->rqe_wr_id[qp->rq.gsi_cons].sg_list[0].length = pkt->payload[0].len;
-	ether_addr_copy(qp->rqe_wr_id[qp->rq.gsi_cons].smac, params->smac);
+	qp->rqe_wr_id[qp->rq.gsi_cons].rc = data->u.data_length_error ?
+		-EINVAL : 0;
+	qp->rqe_wr_id[qp->rq.gsi_cons].vlan_id = data->vlan;
+	/* note: length stands for data length i.e. GRH is excluded */
+	qp->rqe_wr_id[qp->rq.gsi_cons].sg_list[0].length =
+		data->length.data_length;
+	*((u32 *)&qp->rqe_wr_id[qp->rq.gsi_cons].smac[0]) =
+		ntohl(data->opaque_data_0);
+	*((u16 *)&qp->rqe_wr_id[qp->rq.gsi_cons].smac[4]) =
+		ntohs((u16)data->opaque_data_1);
 
 	qedr_inc_sw_gsi_cons(&qp->rq);
 
@@ -111,6 +122,14 @@ void qedr_ll2_rx_cb(void *_dev, struct qed_roce_ll2_packet *pkt,
 		(*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
 }
 
+void qedr_ll2_release_rx_packet(void *cxt,
+				u8 connection_handle,
+				void *cookie,
+				dma_addr_t rx_buf_addr, bool b_last_packet)
+{
+	/* Do nothing... */
+}
+
 static void qedr_destroy_gsi_cq(struct qedr_dev *dev,
 				struct ib_qp_init_attr *attrs)
 {
@@ -159,27 +178,159 @@ static inline int qedr_check_gsi_qp_attrs(struct qedr_dev *dev,
 	return 0;
 }
 
+static int qedr_ll2_post_tx(struct qedr_dev *dev,
+			    struct qed_roce_ll2_packet *pkt)
+{
+	enum qed_ll2_roce_flavor_type roce_flavor;
+	struct qed_ll2_tx_pkt_info ll2_tx_pkt;
+	int rc;
+	int i;
+
+	memset(&ll2_tx_pkt, 0, sizeof(ll2_tx_pkt));
+
+	roce_flavor = (pkt->roce_mode == ROCE_V1) ?
+	    QED_LL2_ROCE : QED_LL2_RROCE;
+
+	if (pkt->roce_mode == ROCE_V2_IPV4)
+		ll2_tx_pkt.enable_ip_cksum = 1;
+
+	ll2_tx_pkt.num_of_bds = 1 /* hdr */  + pkt->n_seg;
+	ll2_tx_pkt.vlan = 0;
+	ll2_tx_pkt.tx_dest = pkt->tx_dest;
+	ll2_tx_pkt.qed_roce_flavor = roce_flavor;
+	ll2_tx_pkt.first_frag = pkt->header.baddr;
+	ll2_tx_pkt.first_frag_len = pkt->header.len;
+	ll2_tx_pkt.cookie = pkt;
+
+	/* tx header */
+	rc = dev->ops->ll2_prepare_tx_packet(dev->rdma_ctx,
+					     dev->gsi_ll2_handle,
+					     &ll2_tx_pkt, 1);
+	if (rc) {
+		/* TX failed while posting header - release resources */
+		dma_free_coherent(&dev->pdev->dev, pkt->header.len,
+				  pkt->header.vaddr, pkt->header.baddr);
+		kfree(pkt);
+
+		DP_ERR(dev, "roce ll2 tx: header failed (rc=%d)\n", rc);
+		return rc;
+	}
+
+	/* tx payload */
+	for (i = 0; i < pkt->n_seg; i++) {
+		rc = dev->ops->ll2_set_fragment_of_tx_packet(
+			dev->rdma_ctx,
+			dev->gsi_ll2_handle,
+			pkt->payload[i].baddr,
+			pkt->payload[i].len);
+
+		if (rc) {
+			/* if failed not much to do here, partial packet has
+			 * been posted we can't free memory, will need to wait
+			 * for completion
+			 */
+			DP_ERR(dev, "ll2 tx: payload failed (rc=%d)\n", rc);
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+int qedr_ll2_stop(struct qedr_dev *dev)
+{
+	int rc;
+
+	if (dev->gsi_ll2_handle == QED_LL2_UNUSED_HANDLE)
+		return 0;
+
+	/* remove LL2 MAC address filter */
+	rc = dev->ops->ll2_set_mac_filter(dev->cdev,
+					  dev->gsi_ll2_mac_address, NULL);
+
+	rc = dev->ops->ll2_terminate_connection(dev->rdma_ctx,
+						dev->gsi_ll2_handle);
+	if (rc)
+		DP_ERR(dev, "Failed to terminate LL2 connection (rc=%d)\n", rc);
+
+	dev->ops->ll2_release_connection(dev->rdma_ctx, dev->gsi_ll2_handle);
+
+	dev->gsi_ll2_handle = QED_LL2_UNUSED_HANDLE;
+
+	return rc;
+}
+
+int qedr_ll2_start(struct qedr_dev *dev,
+		   struct ib_qp_init_attr *attrs, struct qedr_qp *qp)
+{
+	struct qed_ll2_acquire_data data;
+	struct qed_ll2_cbs cbs;
+	int rc;
+
+	/* configure and start LL2 */
+	cbs.rx_comp_cb = qedr_ll2_complete_rx_packet;
+	cbs.tx_comp_cb = qedr_ll2_complete_tx_packet;
+	cbs.rx_release_cb = qedr_ll2_release_rx_packet;
+	cbs.tx_release_cb = qedr_ll2_complete_tx_packet;
+	cbs.cookie = dev;
+
+	memset(&data, 0, sizeof(data));
+	data.input.conn_type = QED_LL2_TYPE_ROCE;
+	data.input.mtu = dev->ndev->mtu;
+	data.input.rx_num_desc = attrs->cap.max_recv_wr;
+	data.input.rx_drop_ttl0_flg = true;
+	data.input.rx_vlan_removal_en = false;
+	data.input.tx_num_desc = attrs->cap.max_send_wr;
+	data.input.tx_tc = 0;
+	data.input.tx_dest = QED_LL2_TX_DEST_NW;
+	data.input.ai_err_packet_too_big = QED_LL2_DROP_PACKET;
+	data.input.ai_err_no_buf = QED_LL2_DROP_PACKET;
+	data.input.gsi_enable = 1;
+	data.p_connection_handle = &dev->gsi_ll2_handle;
+	data.cbs = &cbs;
+
+	rc = dev->ops->ll2_acquire_connection(dev->rdma_ctx, &data);
+	if (rc) {
+		DP_ERR(dev,
+		       "ll2 start: failed to acquire LL2 connection (rc=%d)\n",
+		       rc);
+		return rc;
+	}
+
+	rc = dev->ops->ll2_establish_connection(dev->rdma_ctx,
+						dev->gsi_ll2_handle);
+	if (rc) {
+		DP_ERR(dev,
+		       "ll2 start: failed to establish LL2 connection (rc=%d)\n",
+		       rc);
+		goto err1;
+	}
+
+	rc = dev->ops->ll2_set_mac_filter(dev->cdev, NULL, dev->ndev->dev_addr);
+	if (rc)
+		goto err2;
+
+	return 0;
+
+err2:
+	dev->ops->ll2_terminate_connection(dev->rdma_ctx, dev->gsi_ll2_handle);
+err1:
+	dev->ops->ll2_release_connection(dev->rdma_ctx, dev->gsi_ll2_handle);
+
+	return rc;
+}
+
 struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
 				 struct ib_qp_init_attr *attrs,
 				 struct qedr_qp *qp)
 {
-	struct qed_roce_ll2_params ll2_params;
 	int rc;
 
 	rc = qedr_check_gsi_qp_attrs(dev, attrs);
 	if (rc)
 		return ERR_PTR(rc);
 
-	/* configure and start LL2 */
-	memset(&ll2_params, 0, sizeof(ll2_params));
-	ll2_params.max_tx_buffers = attrs->cap.max_send_wr;
-	ll2_params.max_rx_buffers = attrs->cap.max_recv_wr;
-	ll2_params.cbs.tx_cb = qedr_ll2_tx_cb;
-	ll2_params.cbs.rx_cb = qedr_ll2_rx_cb;
-	ll2_params.cb_cookie = (void *)dev;
-	ll2_params.mtu = dev->ndev->mtu;
-	ether_addr_copy(ll2_params.mac_address, dev->ndev->dev_addr);
-	rc = dev->ops->roce_ll2_start(dev->cdev, &ll2_params);
+	rc = qedr_ll2_start(dev, attrs, qp);
 	if (rc) {
 		DP_ERR(dev, "create gsi qp: failed on ll2 start. rc=%d\n", rc);
 		return ERR_PTR(rc);
@@ -214,7 +365,7 @@ struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
 err:
 	kfree(qp->rqe_wr_id);
 
-	rc = dev->ops->roce_ll2_stop(dev->cdev);
+	rc = qedr_ll2_stop(dev);
 	if (rc)
 		DP_ERR(dev, "create gsi qp: failed destroy on create\n");
 
@@ -223,15 +374,7 @@ struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
 
 int qedr_destroy_gsi_qp(struct qedr_dev *dev)
 {
-	int rc;
-
-	rc = dev->ops->roce_ll2_stop(dev->cdev);
-	if (rc)
-		DP_ERR(dev, "destroy gsi qp: failed (rc=%d)\n", rc);
-	else
-		DP_DEBUG(dev, QEDR_MSG_GSI, "destroy gsi qp: success\n");
-
-	return rc;
+	return qedr_ll2_stop(dev);
 }
 
 #define QEDR_MAX_UD_HEADER_SIZE	(100)
@@ -421,7 +564,6 @@ int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 {
 	struct qed_roce_ll2_packet *pkt = NULL;
 	struct qedr_qp *qp = get_qedr_qp(ibqp);
-	struct qed_roce_ll2_tx_params params;
 	struct qedr_dev *dev = qp->dev;
 	unsigned long flags;
 	int rc;
@@ -449,8 +591,6 @@ int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 		goto err;
 	}
 
-	memset(&params, 0, sizeof(params));
-
 	spin_lock_irqsave(&qp->q_lock, flags);
 
 	rc = qedr_gsi_build_packet(dev, qp, wr, &pkt);
@@ -459,7 +599,8 @@ int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 		goto err;
 	}
 
-	rc = dev->ops->roce_ll2_tx(dev->cdev, pkt, &params);
+	rc = qedr_ll2_post_tx(dev, pkt);
+
 	if (!rc) {
 		qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id;
 		qedr_inc_sw_prod(&qp->sq);
@@ -467,17 +608,6 @@ int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 			 "gsi post send: opcode=%d, in_irq=%ld, irqs_disabled=%d, wr_id=%llx\n",
 			 wr->opcode, in_irq(), irqs_disabled(), wr->wr_id);
 	} else {
-		if (rc == QED_ROCE_TX_HEAD_FAILURE) {
-			/* TX failed while posting header - release resources */
-			dma_free_coherent(&dev->pdev->dev, pkt->header.len,
-					  pkt->header.vaddr, pkt->header.baddr);
-			kfree(pkt);
-		} else if (rc == QED_ROCE_TX_FRAG_FAILURE) {
-			/* NTD since TX failed while posting a fragment. We will
-			 * release the resources on TX callback
-			 */
-		}
-
 		DP_ERR(dev, "gsi post send: failed to transmit (rc=%d)\n", rc);
 		rc = -EAGAIN;
 		*bad_wr = wr;
@@ -504,10 +634,8 @@ int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 {
 	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
 	struct qedr_qp *qp = get_qedr_qp(ibqp);
-	struct qed_roce_ll2_buffer buf;
 	unsigned long flags;
-	int status = 0;
-	int rc;
+	int rc = 0;
 
 	if ((qp->state != QED_ROCE_QP_STATE_RTR) &&
 	    (qp->state != QED_ROCE_QP_STATE_RTS)) {
@@ -518,8 +646,6 @@ int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 		return -EINVAL;
 	}
 
-	memset(&buf, 0, sizeof(buf));
-
 	spin_lock_irqsave(&qp->q_lock, flags);
 
 	while (wr) {
@@ -530,10 +656,12 @@ int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 			goto err;
 		}
 
-		buf.baddr = wr->sg_list[0].addr;
-		buf.len = wr->sg_list[0].length;
-
-		rc = dev->ops->roce_ll2_post_rx_buffer(dev->cdev, &buf, 0, 1);
+		rc = dev->ops->ll2_post_rx_buffer(dev->rdma_ctx,
+						  dev->gsi_ll2_handle,
+						  wr->sg_list[0].addr,
+						  wr->sg_list[0].length,
+						  0 /* cookie */,
+						  1 /* notify_fw */);
 		if (rc) {
 			DP_ERR(dev,
 			       "gsi post recv: failed to post rx buffer (rc=%d)\n",
@@ -553,7 +681,7 @@ int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 
 	spin_unlock_irqrestore(&qp->q_lock, flags);
 
-	return status;
+	return rc;
 err:
 	spin_unlock_irqrestore(&qp->q_lock, flags);
 	*bad_wr = wr;
diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index d7afc42..14b08ee 100644
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -552,7 +552,6 @@ struct qed_hwfn {
 #endif
 
 	struct z_stream_s		*stream;
-	struct qed_roce_ll2_info	*ll2;
 };
 
 struct pci_params {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index f3aad61..b222b2b 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -89,13 +89,14 @@ struct qed_ll2_buffer {
 	dma_addr_t phys_addr;
 };
 
-static void qed_ll2b_complete_tx_packet(struct qed_hwfn *p_hwfn,
+static void qed_ll2b_complete_tx_packet(void *cxt,
 					u8 connection_handle,
 					void *cookie,
 					dma_addr_t first_frag_addr,
 					bool b_last_fragment,
 					bool b_last_packet)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_dev *cdev = p_hwfn->cdev;
 	struct sk_buff *skb = cookie;
 
@@ -164,9 +165,9 @@ static void qed_ll2_kill_buffers(struct qed_dev *cdev)
 		qed_ll2_dealloc_buffer(cdev, buffer);
 }
 
-static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
-				 struct qed_ll2_comp_rx_data *data)
+void qed_ll2b_complete_rx_packet(void *cxt, struct qed_ll2_comp_rx_data *data)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_buffer *buffer = data->cookie;
 	struct qed_dev *cdev = p_hwfn->cdev;
 	dma_addr_t new_phys_addr;
@@ -327,21 +328,12 @@ static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 			b_last_frag =
 				p_tx->cur_completing_bd_idx == p_pkt->bd_used;
 			tx_frag = p_pkt->bds_set[0].tx_frag;
-			if (p_ll2_conn->input.gsi_enable)
-				qed_ll2b_release_tx_gsi_packet(p_hwfn,
-							       p_ll2_conn->
-							       my_id,
-							       p_pkt->cookie,
-							       tx_frag,
-							       b_last_frag,
-							       b_last_packet);
-			else
-				qed_ll2b_complete_tx_packet(p_hwfn,
-							    p_ll2_conn->my_id,
-							    p_pkt->cookie,
-							    tx_frag,
-							    b_last_frag,
-							    b_last_packet);
+			p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie,
+						      p_ll2_conn->my_id,
+						      p_pkt->cookie,
+						      tx_frag,
+						      b_last_frag,
+						      b_last_packet);
 		}
 	}
 }
@@ -354,7 +346,6 @@ static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 	struct qed_ll2_tx_packet *p_pkt;
 	bool b_last_frag = false;
 	unsigned long flags;
-	dma_addr_t tx_frag;
 	int rc = -EINVAL;
 
 	spin_lock_irqsave(&p_tx->lock, flags);
@@ -395,19 +386,13 @@ static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 		list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
 
 		spin_unlock_irqrestore(&p_tx->lock, flags);
-		tx_frag = p_pkt->bds_set[0].tx_frag;
-		if (p_ll2_conn->input.gsi_enable)
-			qed_ll2b_complete_tx_gsi_packet(p_hwfn,
-							p_ll2_conn->my_id,
-							p_pkt->cookie,
-							tx_frag,
-							b_last_frag, !num_bds);
-		else
-			qed_ll2b_complete_tx_packet(p_hwfn,
-						    p_ll2_conn->my_id,
-						    p_pkt->cookie,
-						    tx_frag,
-						    b_last_frag, !num_bds);
+
+		p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie,
+					   p_ll2_conn->my_id,
+					   p_pkt->cookie,
+					   p_pkt->bds_set[0].tx_frag,
+					   b_last_frag, !num_bds);
+
 		spin_lock_irqsave(&p_tx->lock, flags);
 	}
 
@@ -418,52 +403,16 @@ static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 	return rc;
 }
 
-static int
-qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn,
-			   struct qed_ll2_info *p_ll2_info,
-			   union core_rx_cqe_union *p_cqe,
-			   unsigned long lock_flags, bool b_last_cqe)
+static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn,
+				  union core_rx_cqe_union *p_cqe,
+				  struct qed_ll2_comp_rx_data *data)
 {
-	struct qed_ll2_rx_queue *p_rx = &p_ll2_info->rx_queue;
-	struct qed_ll2_rx_packet *p_pkt = NULL;
-	u16 packet_length, parse_flags, vlan;
-	u32 src_mac_addrhi;
-	u16 src_mac_addrlo;
-
-	if (!list_empty(&p_rx->active_descq))
-		p_pkt = list_first_entry(&p_rx->active_descq,
-					 struct qed_ll2_rx_packet, list_entry);
-	if (!p_pkt) {
-		DP_NOTICE(p_hwfn,
-			  "GSI Rx completion but active_descq is empty\n");
-		return -EIO;
-	}
-
-	list_del(&p_pkt->list_entry);
-	parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
-	packet_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
-	vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
-	src_mac_addrhi = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
-	src_mac_addrlo = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
-	if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
-		DP_NOTICE(p_hwfn,
-			  "Mismatch between active_descq and the LL2 Rx chain\n");
-	list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
-
-	spin_unlock_irqrestore(&p_rx->lock, lock_flags);
-	qed_ll2b_complete_rx_gsi_packet(p_hwfn,
-					p_ll2_info->my_id,
-					p_pkt->cookie,
-					p_pkt->rx_buf_addr,
-					packet_length,
-					p_cqe->rx_cqe_gsi.data_length_error,
-					parse_flags,
-					vlan,
-					src_mac_addrhi,
-					src_mac_addrlo, b_last_cqe);
-	spin_lock_irqsave(&p_rx->lock, lock_flags);
-
-	return 0;
+	data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
+	data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
+	data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
+	data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
+	data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
+	data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error;
 }
 
 static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
@@ -501,7 +450,10 @@ qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
 	}
 	list_del(&p_pkt->list_entry);
 
-	qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
+	if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR)
+		qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
+	else
+		qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data);
 	if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
 		DP_NOTICE(p_hwfn,
 			  "Mismatch between active_descq and the LL2 Rx chain\n");
@@ -514,7 +466,8 @@ qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
 	data.b_last_packet = b_last_cqe;
 
 	spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
-	qed_ll2b_complete_rx_packet(p_hwfn, &data);
+	p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data);
+
 	spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
 
 	return 0;
@@ -552,9 +505,6 @@ static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
 			rc = -EINVAL;
 			break;
 		case CORE_RX_CQE_TYPE_GSI_OFFLOAD:
-			rc = qed_ll2_rxq_completion_gsi(p_hwfn, p_ll2_conn,
-							cqe, flags, b_last_cqe);
-			break;
 		case CORE_RX_CQE_TYPE_REGULAR:
 			rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
 							   cqe, &flags,
@@ -1244,6 +1194,23 @@ qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
 	return rc;
 }
 
+static int
+qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs)
+{
+	if (!cbs || (!cbs->rx_comp_cb ||
+		     !cbs->rx_release_cb ||
+		     !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie))
+		return -EINVAL;
+
+	p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb;
+	p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb;
+	p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb;
+	p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb;
+	p_ll2_info->cbs.cookie = cbs->cookie;
+
+	return 0;
+}
+
 static enum core_error_handle
 qed_ll2_get_error_choice(enum qed_ll2_error_handle err)
 {
@@ -1259,9 +1226,9 @@ qed_ll2_get_error_choice(enum qed_ll2_error_handle err)
 	}
 }
 
-int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_acquire_data *data)
+int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	qed_int_comp_cb_t comp_rx_cb, comp_tx_cb;
 	struct qed_ll2_info *p_ll2_info = NULL;
 	u8 i, *p_tx_max;
@@ -1298,6 +1265,13 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 	else
 		*p_tx_max = min_t(u8, *p_tx_max,
 				  CORE_LL2_TX_MAX_BDS_PER_PACKET);
+
+	rc = qed_ll2_set_cbs(p_ll2_info, data->cbs);
+	if (rc) {
+		DP_NOTICE(p_hwfn, "Invalid callback functions\n");
+		goto q_allocate_fail;
+	}
+
 	rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info);
 	if (rc)
 		goto q_allocate_fail;
@@ -1377,8 +1351,10 @@ qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
 	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
 	qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
 }
-int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
+
+int qed_ll2_establish_connection(void *cxt, u8 connection_handle)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_info *p_ll2_conn;
 	struct qed_ll2_rx_queue *p_rx;
 	struct qed_ll2_tx_queue *p_tx;
@@ -1505,11 +1481,12 @@ static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn,
 	DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod));
 }
 
-int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
+int qed_ll2_post_rx_buffer(void *cxt,
 			   u8 connection_handle,
 			   dma_addr_t addr,
 			   u16 buf_len, void *cookie, u8 notify_fw)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct core_rx_bd_with_buff_len *p_curb = NULL;
 	struct qed_ll2_rx_packet *p_curp = NULL;
 	struct qed_ll2_info *p_ll2_conn;
@@ -1699,11 +1676,12 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
 		   p_ll2_conn->input.conn_type, db_msg.spq_prod);
 }
 
-int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
+int qed_ll2_prepare_tx_packet(void *cxt,
 			      u8 connection_handle,
 			      struct qed_ll2_tx_pkt_info *pkt,
 			      bool notify_fw)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_tx_packet *p_curp = NULL;
 	struct qed_ll2_info *p_ll2_conn = NULL;
 	struct qed_ll2_tx_queue *p_tx;
@@ -1750,11 +1728,12 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
 	return rc;
 }
 
-int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn,
+int qed_ll2_set_fragment_of_tx_packet(void *cxt,
 				      u8 connection_handle,
 				      dma_addr_t addr, u16 nbytes)
 {
 	struct qed_ll2_tx_packet *p_cur_send_packet = NULL;
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_info *p_ll2_conn = NULL;
 	u16 cur_send_frag_num = 0;
 	struct core_tx_bd *p_bd;
@@ -1789,8 +1768,9 @@ int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn,
 	return 0;
 }
 
-int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
+int qed_ll2_terminate_connection(void *cxt, u8 connection_handle)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_info *p_ll2_conn = NULL;
 	int rc = -EINVAL;
 	struct qed_ptt *p_ptt;
@@ -1855,8 +1835,10 @@ static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
 		kfree(p_buffer);
 	}
 }
-void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
+
+void qed_ll2_release_connection(void *cxt, u8 connection_handle)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_info *p_ll2_conn = NULL;
 
 	p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
@@ -1989,9 +1971,10 @@ static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn,
 	p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts);
 }
 
-int qed_ll2_get_stats(struct qed_hwfn *p_hwfn,
+int qed_ll2_get_stats(void *cxt,
 		      u8 connection_handle, struct qed_ll2_stats *p_stats)
 {
+	struct qed_hwfn *p_hwfn = cxt;
 	struct qed_ll2_info *p_ll2_conn = NULL;
 	struct qed_ptt *p_ptt;
 
@@ -2018,6 +2001,17 @@ int qed_ll2_get_stats(struct qed_hwfn *p_hwfn,
 	return 0;
 }
 
+static void qed_ll2b_release_rx_packet(void *cxt,
+				       u8 connection_handle,
+				       void *cookie,
+				       dma_addr_t rx_buf_addr,
+				       bool b_last_packet)
+{
+	struct qed_hwfn *p_hwfn = cxt;
+
+	qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie);
+}
+
 static void qed_ll2_register_cb_ops(struct qed_dev *cdev,
 				    const struct qed_ll2_cb_ops *ops,
 				    void *cookie)
@@ -2026,11 +2020,18 @@ static void qed_ll2_register_cb_ops(struct qed_dev *cdev,
 	cdev->ll2->cb_cookie = cookie;
 }
 
+struct qed_ll2_cbs ll2_cbs = {
+	.rx_comp_cb = &qed_ll2b_complete_rx_packet,
+	.rx_release_cb = &qed_ll2b_release_rx_packet,
+	.tx_comp_cb = &qed_ll2b_complete_tx_packet,
+	.tx_release_cb = &qed_ll2b_complete_tx_packet,
+};
+
 static void qed_ll2_set_conn_data(struct qed_dev *cdev,
 				  struct qed_ll2_acquire_data *data,
 				  struct qed_ll2_params *params,
 				  enum qed_ll2_conn_type conn_type,
-				  u8 *handle, bool lb, u8 gsi_enable)
+				  u8 *handle, bool lb)
 {
 	memset(data, 0, sizeof(*data));
 
@@ -2040,8 +2041,10 @@ static void qed_ll2_set_conn_data(struct qed_dev *cdev,
 	data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets;
 	data->input.rx_vlan_removal_en = params->rx_vlan_stripping;
 	data->input.tx_num_desc = QED_LL2_TX_SIZE;
-	data->input.gsi_enable = gsi_enable;
 	data->p_connection_handle = handle;
+	data->cbs = &ll2_cbs;
+	ll2_cbs.cookie = QED_LEADING_HWFN(cdev);
+
 	if (lb) {
 		data->input.tx_tc = OOO_LB_TC;
 		data->input.tx_dest = QED_LL2_TX_DEST_LB;
@@ -2060,7 +2063,7 @@ static int qed_ll2_start_ooo(struct qed_dev *cdev,
 	int rc;
 
 	qed_ll2_set_conn_data(cdev, &data, params,
-			      QED_LL2_TYPE_ISCSI_OOO, handle, true, 0);
+			      QED_LL2_TYPE_ISCSI_OOO, handle, true);
 
 	rc = qed_ll2_acquire_connection(hwfn, &data);
 	if (rc) {
@@ -2090,7 +2093,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 	struct qed_ll2_acquire_data data;
 	struct qed_ptt *p_ptt;
 	int rc, i;
-	u8 gsi_enable = 1;
+
 
 	/* Initialize LL2 locks & lists */
 	INIT_LIST_HEAD(&cdev->ll2->list);
@@ -2122,11 +2125,9 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 	switch (QED_LEADING_HWFN(cdev)->hw_info.personality) {
 	case QED_PCI_FCOE:
 		conn_type = QED_LL2_TYPE_FCOE;
-		gsi_enable = 0;
 		break;
 	case QED_PCI_ISCSI:
 		conn_type = QED_LL2_TYPE_ISCSI;
-		gsi_enable = 0;
 		break;
 	case QED_PCI_ETH_ROCE:
 		conn_type = QED_LL2_TYPE_ROCE;
@@ -2136,7 +2137,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 	}
 
 	qed_ll2_set_conn_data(cdev, &data, params, conn_type,
-			      &cdev->ll2->handle, false, gsi_enable);
+			      &cdev->ll2->handle, false);
 
 	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data);
 	if (rc) {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
index 3caaad5..a822528 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
@@ -126,6 +126,7 @@ struct qed_ll2_info {
 	u8 tx_stats_en;
 	struct qed_ll2_rx_queue rx_queue;
 	struct qed_ll2_tx_queue tx_queue;
+	struct qed_ll2_cbs cbs;
 };
 
 /**
@@ -134,30 +135,29 @@ struct qed_ll2_info {
  *        connecion handler as output parameter.
  *
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param data - describes connection parameters
  * @return int
  */
-int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_acquire_data *data);
+int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data);
 
 /**
  * @brief qed_ll2_establish_connection - start previously
  *        allocated LL2 queues pair
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param p_ptt
  * @param connection_handle	LL2 connection's handle obtained from
  *                              qed_ll2_require_connection
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
+int qed_ll2_establish_connection(void *cxt, u8 connection_handle);
 
 /**
  * @brief qed_ll2_post_rx_buffers - submit buffers to LL2 Rx queue.
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle	LL2 connection's handle obtained from
  *				qed_ll2_require_connection
  * @param addr			rx (physical address) buffers to submit
@@ -166,7 +166,7 @@ int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
+int qed_ll2_post_rx_buffer(void *cxt,
 			   u8 connection_handle,
 			   dma_addr_t addr,
 			   u16 buf_len, void *cookie, u8 notify_fw);
@@ -175,14 +175,14 @@ int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
  * @brief qed_ll2_prepare_tx_packet - request for start Tx BD
  *				      to prepare Tx packet submission to FW.
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle
  * @param pkt - info regarding the tx packet
  * @param notify_fw - issue doorbell to fw for this packet
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
+int qed_ll2_prepare_tx_packet(void *cxt,
 			      u8 connection_handle,
 			      struct qed_ll2_tx_pkt_info *pkt,
 			      bool notify_fw);
@@ -191,18 +191,18 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
  * @brief qed_ll2_release_connection -	releases resources
  *					allocated for LL2 connection
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle		LL2 connection's handle obtained from
  *					qed_ll2_require_connection
  */
-void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
+void qed_ll2_release_connection(void *cxt, u8 connection_handle);
 
 /**
  * @brief qed_ll2_set_fragment_of_tx_packet -	provides fragments to fill
  *						Tx BD of BDs requested by
  *						qed_ll2_prepare_tx_packet
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle			LL2 connection's handle
  *						obtained from
  *						qed_ll2_require_connection
@@ -211,7 +211,7 @@ void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn,
+int qed_ll2_set_fragment_of_tx_packet(void *cxt,
 				      u8 connection_handle,
 				      dma_addr_t addr, u16 nbytes);
 
@@ -219,27 +219,27 @@ int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn,
  * @brief qed_ll2_terminate_connection -	stops Tx/Rx queues
  *
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle			LL2 connection's handle
  *						obtained from
  *						qed_ll2_require_connection
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
+int qed_ll2_terminate_connection(void *cxt, u8 connection_handle);
 
 /**
  * @brief qed_ll2_get_stats -	get LL2 queue's statistics
  *
  *
- * @param p_hwfn
+ * @param cxt - pointer to the hw-function [opaque to some]
  * @param connection_handle	LL2 connection's handle obtained from
  *				qed_ll2_require_connection
  * @param p_stats
  *
  * @return 0 on success, failure otherwise
  */
-int qed_ll2_get_stats(struct qed_hwfn *p_hwfn,
+int qed_ll2_get_stats(void *cxt,
 		      u8 connection_handle, struct qed_ll2_stats *p_stats);
 
 /**
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index 33abcf1..4bc2f6c 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -35,7 +35,6 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/errno.h>
-#include <linux/etherdevice.h>
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
 #include <linux/io.h>
@@ -65,6 +64,7 @@
 #include "qed_sp.h"
 #include "qed_roce.h"
 #include "qed_ll2.h"
+#include <linux/qed/qed_ll2_if.h>
 
 static void qed_roce_free_real_icid(struct qed_hwfn *p_hwfn, u16 icid);
 
@@ -2709,310 +2709,35 @@ static void qed_rdma_remove_user(void *rdma_cxt, u16 dpi)
 	spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
 }
 
-void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-				     u8 connection_handle,
-				     void *cookie,
-				     dma_addr_t first_frag_addr,
-				     bool b_last_fragment, bool b_last_packet)
-{
-	struct qed_roce_ll2_packet *packet = cookie;
-	struct qed_roce_ll2_info *roce_ll2 = p_hwfn->ll2;
-
-	roce_ll2->cbs.tx_cb(roce_ll2->cb_cookie, packet);
-}
-
-void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-				    u8 connection_handle,
-				    void *cookie,
-				    dma_addr_t first_frag_addr,
-				    bool b_last_fragment, bool b_last_packet)
-{
-	qed_ll2b_complete_tx_gsi_packet(p_hwfn, connection_handle,
-					cookie, first_frag_addr,
-					b_last_fragment, b_last_packet);
-}
-
-void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
-				     u8 connection_handle,
-				     void *cookie,
-				     dma_addr_t rx_buf_addr,
-				     u16 data_length,
-				     u8 data_length_error,
-				     u16 parse_flags,
-				     u16 vlan,
-				     u32 src_mac_addr_hi,
-				     u16 src_mac_addr_lo, bool b_last_packet)
-{
-	struct qed_roce_ll2_info *roce_ll2 = p_hwfn->ll2;
-	struct qed_roce_ll2_rx_params params;
-	struct qed_dev *cdev = p_hwfn->cdev;
-	struct qed_roce_ll2_packet pkt;
-
-	DP_VERBOSE(cdev,
-		   QED_MSG_LL2,
-		   "roce ll2 rx complete: bus_addr=%p, len=%d, data_len_err=%d\n",
-		   (void *)(uintptr_t)rx_buf_addr,
-		   data_length, data_length_error);
-
-	memset(&pkt, 0, sizeof(pkt));
-	pkt.n_seg = 1;
-	pkt.payload[0].baddr = rx_buf_addr;
-	pkt.payload[0].len = data_length;
-
-	memset(&params, 0, sizeof(params));
-	params.vlan_id = vlan;
-	*((u32 *)&params.smac[0]) = ntohl(src_mac_addr_hi);
-	*((u16 *)&params.smac[4]) = ntohs(src_mac_addr_lo);
-
-	if (data_length_error) {
-		DP_ERR(cdev,
-		       "roce ll2 rx complete: data length error %d, length=%d\n",
-		       data_length_error, data_length);
-		params.rc = -EINVAL;
-	}
-
-	roce_ll2->cbs.rx_cb(roce_ll2->cb_cookie, &pkt, &params);
-}
-
 static int qed_roce_ll2_set_mac_filter(struct qed_dev *cdev,
 				       u8 *old_mac_address,
 				       u8 *new_mac_address)
 {
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
 	struct qed_ptt *p_ptt;
 	int rc = 0;
 
-	if (!hwfn->ll2 || hwfn->ll2->handle == QED_LL2_UNUSED_HANDLE) {
-		DP_ERR(cdev,
-		       "qed roce mac filter failed - roce_info/ll2 NULL\n");
-		return -EINVAL;
-	}
-
-	p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
+	p_ptt = qed_ptt_acquire(p_hwfn);
 	if (!p_ptt) {
 		DP_ERR(cdev,
 		       "qed roce ll2 mac filter set: failed to acquire PTT\n");
 		return -EINVAL;
 	}
 
-	mutex_lock(&hwfn->ll2->lock);
 	if (old_mac_address)
-		qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt,
-					  old_mac_address);
+		qed_llh_remove_mac_filter(p_hwfn, p_ptt, old_mac_address);
 	if (new_mac_address)
-		rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt,
-					    new_mac_address);
-	mutex_unlock(&hwfn->ll2->lock);
-
-	qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt);
-
-	if (rc)
-		DP_ERR(cdev,
-		       "qed roce ll2 mac filter set: failed to add mac filter\n");
-
-	return rc;
-}
-
-static int qed_roce_ll2_start(struct qed_dev *cdev,
-			      struct qed_roce_ll2_params *params)
-{
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
-	struct qed_roce_ll2_info *roce_ll2;
-	struct qed_ll2_acquire_data data;
-	int rc;
-
-	if (!params) {
-		DP_ERR(cdev, "qed roce ll2 start: failed due to NULL params\n");
-		return -EINVAL;
-	}
-	if (!params->cbs.tx_cb || !params->cbs.rx_cb) {
-		DP_ERR(cdev,
-		       "qed roce ll2 start: failed due to NULL tx/rx. tx_cb=%p, rx_cb=%p\n",
-		       params->cbs.tx_cb, params->cbs.rx_cb);
-		return -EINVAL;
-	}
-	if (!is_valid_ether_addr(params->mac_address)) {
-		DP_ERR(cdev,
-		       "qed roce ll2 start: failed due to invalid Ethernet address %pM\n",
-		       params->mac_address);
-		return -EINVAL;
-	}
-
-	/* Initialize */
-	roce_ll2 = kzalloc(sizeof(*roce_ll2), GFP_ATOMIC);
-	if (!roce_ll2) {
-		DP_ERR(cdev, "qed roce ll2 start: failed memory allocation\n");
-		return -ENOMEM;
-	}
+		rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, new_mac_address);
 
-	roce_ll2->handle = QED_LL2_UNUSED_HANDLE;
-	roce_ll2->cbs = params->cbs;
-	roce_ll2->cb_cookie = params->cb_cookie;
-	mutex_init(&roce_ll2->lock);
-
-	memset(&data, 0, sizeof(data));
-	data.input.conn_type = QED_LL2_TYPE_ROCE;
-	data.input.mtu = params->mtu;
-	data.input.rx_num_desc = params->max_rx_buffers;
-	data.input.tx_num_desc = params->max_tx_buffers;
-	data.input.rx_drop_ttl0_flg = true;
-	data.input.rx_vlan_removal_en = false;
-	data.input.tx_dest = QED_LL2_TX_DEST_NW;
-	data.input.ai_err_packet_too_big = LL2_DROP_PACKET;
-	data.input.ai_err_no_buf = LL2_DROP_PACKET;
-	data.p_connection_handle = &roce_ll2->handle;
-	data.input.gsi_enable = true;
-
-	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data);
-	if (rc) {
-		DP_ERR(cdev,
-		       "qed roce ll2 start: failed to acquire LL2 connection (rc=%d)\n",
-		       rc);
-		goto err;
-	}
-
-	rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev),
-					  roce_ll2->handle);
-	if (rc) {
-		DP_ERR(cdev,
-		       "qed roce ll2 start: failed to establish LL2 connection (rc=%d)\n",
-		       rc);
-		goto err1;
-	}
-
-	hwfn->ll2 = roce_ll2;
-
-	rc = qed_roce_ll2_set_mac_filter(cdev, NULL, params->mac_address);
-	if (rc) {
-		hwfn->ll2 = NULL;
-		goto err2;
-	}
-	ether_addr_copy(roce_ll2->mac_address, params->mac_address);
-
-	return 0;
-
-err2:
-	qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), roce_ll2->handle);
-err1:
-	qed_ll2_release_connection(QED_LEADING_HWFN(cdev), roce_ll2->handle);
-err:
-	kfree(roce_ll2);
-	return rc;
-}
-
-static int qed_roce_ll2_stop(struct qed_dev *cdev)
-{
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
-	struct qed_roce_ll2_info *roce_ll2 = hwfn->ll2;
-	int rc;
-
-	if (roce_ll2->handle == QED_LL2_UNUSED_HANDLE) {
-		DP_ERR(cdev, "qed roce ll2 stop: cannot stop an unused LL2\n");
-		return -EINVAL;
-	}
-
-	/* remove LL2 MAC address filter */
-	rc = qed_roce_ll2_set_mac_filter(cdev, roce_ll2->mac_address, NULL);
-	eth_zero_addr(roce_ll2->mac_address);
+	qed_ptt_release(p_hwfn, p_ptt);
 
-	rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev),
-					  roce_ll2->handle);
 	if (rc)
 		DP_ERR(cdev,
-		       "qed roce ll2 stop: failed to terminate LL2 connection (rc=%d)\n",
-		       rc);
-
-	qed_ll2_release_connection(QED_LEADING_HWFN(cdev), roce_ll2->handle);
-
-	roce_ll2->handle = QED_LL2_UNUSED_HANDLE;
-
-	kfree(roce_ll2);
+		       "qed roce ll2 mac filter set: failed to add MAC filter\n");
 
 	return rc;
 }
 
-static int qed_roce_ll2_tx(struct qed_dev *cdev,
-			   struct qed_roce_ll2_packet *pkt,
-			   struct qed_roce_ll2_tx_params *params)
-{
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
-	struct qed_roce_ll2_info *roce_ll2 = hwfn->ll2;
-	enum qed_ll2_roce_flavor_type qed_roce_flavor;
-	struct qed_ll2_tx_pkt_info ll2_pkt;
-	u8 flags = 0;
-	int rc;
-	int i;
-
-	if (!pkt || !params) {
-		DP_ERR(cdev,
-		       "roce ll2 tx: failed tx because one of the following is NULL - drv=%p, pkt=%p, params=%p\n",
-		       cdev, pkt, params);
-		return -EINVAL;
-	}
-
-	qed_roce_flavor = (pkt->roce_mode == ROCE_V1) ? QED_LL2_ROCE
-						      : QED_LL2_RROCE;
-
-	if (pkt->roce_mode == ROCE_V2_IPV4)
-		flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT);
-
-	/* Tx header */
-	memset(&ll2_pkt, 0, sizeof(ll2_pkt));
-	ll2_pkt.num_of_bds = 1 + pkt->n_seg;
-	ll2_pkt.bd_flags = flags;
-	ll2_pkt.tx_dest = QED_LL2_TX_DEST_NW;
-	ll2_pkt.qed_roce_flavor = qed_roce_flavor;
-	ll2_pkt.first_frag = pkt->header.baddr;
-	ll2_pkt.first_frag_len = pkt->header.len;
-	ll2_pkt.cookie = pkt;
-
-	rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev),
-				       roce_ll2->handle,
-				       &ll2_pkt, 1);
-	if (rc) {
-		DP_ERR(cdev, "roce ll2 tx: header failed (rc=%d)\n", rc);
-		return QED_ROCE_TX_HEAD_FAILURE;
-	}
-
-	/* Tx payload */
-	for (i = 0; i < pkt->n_seg; i++) {
-		rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev),
-						       roce_ll2->handle,
-						       pkt->payload[i].baddr,
-						       pkt->payload[i].len);
-		if (rc) {
-			/* If failed not much to do here, partial packet has
-			 * been posted * we can't free memory, will need to wait
-			 * for completion
-			 */
-			DP_ERR(cdev,
-			       "roce ll2 tx: payload failed (rc=%d)\n", rc);
-			return QED_ROCE_TX_FRAG_FAILURE;
-		}
-	}
-
-	return 0;
-}
-
-static int qed_roce_ll2_post_rx_buffer(struct qed_dev *cdev,
-				       struct qed_roce_ll2_buffer *buf,
-				       u64 cookie, u8 notify_fw)
-{
-	return qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev),
-				      QED_LEADING_HWFN(cdev)->ll2->handle,
-				      buf->baddr, buf->len,
-				      (void *)(uintptr_t)cookie, notify_fw);
-}
-
-static int qed_roce_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats)
-{
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
-	struct qed_roce_ll2_info *roce_ll2 = hwfn->ll2;
-
-	return qed_ll2_get_stats(QED_LEADING_HWFN(cdev),
-				 roce_ll2->handle, stats);
-}
-
 static const struct qed_rdma_ops qed_rdma_ops_pass = {
 	.common = &qed_common_ops_pass,
 	.fill_dev_info = &qed_fill_rdma_dev_info,
@@ -3040,12 +2765,15 @@ static const struct qed_rdma_ops qed_rdma_ops_pass = {
 	.rdma_free_tid = &qed_rdma_free_tid,
 	.rdma_register_tid = &qed_rdma_register_tid,
 	.rdma_deregister_tid = &qed_rdma_deregister_tid,
-	.roce_ll2_start = &qed_roce_ll2_start,
-	.roce_ll2_stop = &qed_roce_ll2_stop,
-	.roce_ll2_tx = &qed_roce_ll2_tx,
-	.roce_ll2_post_rx_buffer = &qed_roce_ll2_post_rx_buffer,
-	.roce_ll2_set_mac_filter = &qed_roce_ll2_set_mac_filter,
-	.roce_ll2_stats = &qed_roce_ll2_stats,
+	.ll2_acquire_connection = &qed_ll2_acquire_connection,
+	.ll2_establish_connection = &qed_ll2_establish_connection,
+	.ll2_terminate_connection = &qed_ll2_terminate_connection,
+	.ll2_release_connection = &qed_ll2_release_connection,
+	.ll2_post_rx_buffer = &qed_ll2_post_rx_buffer,
+	.ll2_prepare_tx_packet = &qed_ll2_prepare_tx_packet,
+	.ll2_set_fragment_of_tx_packet = &qed_ll2_set_fragment_of_tx_packet,
+	.ll2_set_mac_filter = &qed_roce_ll2_set_mac_filter,
+	.ll2_get_stats = &qed_ll2_get_stats,
 };
 
 const struct qed_rdma_ops *qed_get_rdma_ops(void)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.h b/drivers/net/ethernet/qlogic/qed/qed_roce.h
index 9742af5..94be3b5 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.h
@@ -170,53 +170,10 @@ struct qed_rdma_qp {
 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 void qed_roce_async_event(struct qed_hwfn *p_hwfn,
 			  u8 fw_event_code, union rdma_eqe_data *rdma_data);
-void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-				     u8 connection_handle,
-				     void *cookie,
-				     dma_addr_t first_frag_addr,
-				     bool b_last_fragment, bool b_last_packet);
-void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-				    u8 connection_handle,
-				    void *cookie,
-				    dma_addr_t first_frag_addr,
-				    bool b_last_fragment, bool b_last_packet);
-void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
-				     u8 connection_handle,
-				     void *cookie,
-				     dma_addr_t rx_buf_addr,
-				     u16 data_length,
-				     u8 data_length_error,
-				     u16 parse_flags,
-				     u16 vlan,
-				     u32 src_mac_addr_hi,
-				     u16 src_mac_addr_lo, bool b_last_packet);
 #else
 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
 static inline void qed_roce_async_event(struct qed_hwfn *p_hwfn,
 					u8 fw_event_code,
 					union rdma_eqe_data *rdma_data) {}
-static inline void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-						   u8 connection_handle,
-						   void *cookie,
-						   dma_addr_t first_frag_addr,
-						   bool b_last_fragment,
-						   bool b_last_packet) {}
-static inline void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
-						  u8 connection_handle,
-						  void *cookie,
-						  dma_addr_t first_frag_addr,
-						  bool b_last_fragment,
-						  bool b_last_packet) {}
-static inline void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
-						   u8 connection_handle,
-						   void *cookie,
-						   dma_addr_t rx_buf_addr,
-						   u16 data_length,
-						   u8 data_length_error,
-						   u16 parse_flags,
-						   u16 vlan,
-						   u32 src_mac_addr_hi,
-						   u16 src_mac_addr_lo,
-						   bool b_last_packet) {}
 #endif
 #endif
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index a8f58d9..e03e9e3 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -121,6 +121,40 @@ struct qed_ll2_comp_rx_data {
 	u16 qp_id;
 };
 
+typedef
+void (*qed_ll2_complete_rx_packet_cb)(void *cxt,
+				      struct qed_ll2_comp_rx_data *data);
+
+typedef
+void (*qed_ll2_release_rx_packet_cb)(void *cxt,
+				     u8 connection_handle,
+				     void *cookie,
+				     dma_addr_t rx_buf_addr,
+				     bool b_last_packet);
+
+typedef
+void (*qed_ll2_complete_tx_packet_cb)(void *cxt,
+				      u8 connection_handle,
+				      void *cookie,
+				      dma_addr_t first_frag_addr,
+				      bool b_last_fragment,
+				      bool b_last_packet);
+
+typedef
+void (*qed_ll2_release_tx_packet_cb)(void *cxt,
+				     u8 connection_handle,
+				     void *cookie,
+				     dma_addr_t first_frag_addr,
+				     bool b_last_fragment, bool b_last_packet);
+
+struct qed_ll2_cbs {
+	qed_ll2_complete_rx_packet_cb rx_comp_cb;
+	qed_ll2_release_rx_packet_cb rx_release_cb;
+	qed_ll2_complete_tx_packet_cb tx_comp_cb;
+	qed_ll2_release_tx_packet_cb tx_release_cb;
+	void *cookie;
+};
+
 struct qed_ll2_acquire_data_inputs {
 	enum qed_ll2_conn_type conn_type;
 	u16 mtu;
@@ -139,6 +173,8 @@ struct qed_ll2_acquire_data_inputs {
 
 struct qed_ll2_acquire_data {
 	struct qed_ll2_acquire_data_inputs input;
+	const struct qed_ll2_cbs *cbs;
+
 	/* Output container for LL2 connection's handle */
 	u8 *p_connection_handle;
 };
diff --git a/include/linux/qed/qed_roce_if.h b/include/linux/qed/qed_roce_if.h
index cbb2ff0..8e70f5e 100644
--- a/include/linux/qed/qed_roce_if.h
+++ b/include/linux/qed/qed_roce_if.h
@@ -34,8 +34,6 @@
 #include <linux/types.h>
 #include <linux/delay.h>
 #include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/qed/qed_if.h>
 #include <linux/qed/qed_ll2_if.h>
@@ -491,42 +489,6 @@ struct qed_roce_ll2_packet {
 	enum qed_roce_ll2_tx_dest tx_dest;
 };
 
-struct qed_roce_ll2_tx_params {
-	int reserved;
-};
-
-struct qed_roce_ll2_rx_params {
-	u16 vlan_id;
-	u8 smac[ETH_ALEN];
-	int rc;
-};
-
-struct qed_roce_ll2_cbs {
-	void (*tx_cb)(void *pdev, struct qed_roce_ll2_packet *pkt);
-
-	void (*rx_cb)(void *pdev, struct qed_roce_ll2_packet *pkt,
-		      struct qed_roce_ll2_rx_params *params);
-};
-
-struct qed_roce_ll2_params {
-	u16 max_rx_buffers;
-	u16 max_tx_buffers;
-	u16 mtu;
-	u8 mac_address[ETH_ALEN];
-	struct qed_roce_ll2_cbs cbs;
-	void *cb_cookie;
-};
-
-struct qed_roce_ll2_info {
-	u8 handle;
-	struct qed_roce_ll2_cbs cbs;
-	u8 mac_address[ETH_ALEN];
-	void *cb_cookie;
-
-	/* Lock to protect ll2 */
-	struct mutex lock;
-};
-
 enum qed_rdma_type {
 	QED_RDMA_TYPE_ROCE,
 };
@@ -579,26 +541,40 @@ struct qed_rdma_ops {
 	int (*rdma_query_qp)(void *rdma_cxt, struct qed_rdma_qp *qp,
 			     struct qed_rdma_query_qp_out_params *oparams);
 	int (*rdma_destroy_qp)(void *rdma_cxt, struct qed_rdma_qp *qp);
+
 	int
 	(*rdma_register_tid)(void *rdma_cxt,
 			     struct qed_rdma_register_tid_in_params *iparams);
+
 	int (*rdma_deregister_tid)(void *rdma_cxt, u32 itid);
 	int (*rdma_alloc_tid)(void *rdma_cxt, u32 *itid);
 	void (*rdma_free_tid)(void *rdma_cxt, u32 itid);
-	int (*roce_ll2_start)(struct qed_dev *cdev,
-			      struct qed_roce_ll2_params *params);
-	int (*roce_ll2_stop)(struct qed_dev *cdev);
-	int (*roce_ll2_tx)(struct qed_dev *cdev,
-			   struct qed_roce_ll2_packet *packet,
-			   struct qed_roce_ll2_tx_params *params);
-	int (*roce_ll2_post_rx_buffer)(struct qed_dev *cdev,
-				       struct qed_roce_ll2_buffer *buf,
-				       u64 cookie, u8 notify_fw);
-	int (*roce_ll2_set_mac_filter)(struct qed_dev *cdev,
-				       u8 *old_mac_address,
-				       u8 *new_mac_address);
-	int (*roce_ll2_stats)(struct qed_dev *cdev,
-			      struct qed_ll2_stats *stats);
+
+	int (*ll2_acquire_connection)(void *rdma_cxt,
+				      struct qed_ll2_acquire_data *data);
+
+	int (*ll2_establish_connection)(void *rdma_cxt, u8 connection_handle);
+	int (*ll2_terminate_connection)(void *rdma_cxt, u8 connection_handle);
+	void (*ll2_release_connection)(void *rdma_cxt, u8 connection_handle);
+
+	int (*ll2_prepare_tx_packet)(void *rdma_cxt,
+				     u8 connection_handle,
+				     struct qed_ll2_tx_pkt_info *pkt,
+				     bool notify_fw);
+
+	int (*ll2_set_fragment_of_tx_packet)(void *rdma_cxt,
+					     u8 connection_handle,
+					     dma_addr_t addr,
+					     u16 nbytes);
+	int (*ll2_post_rx_buffer)(void *rdma_cxt, u8 connection_handle,
+				  dma_addr_t addr, u16 buf_len, void *cookie,
+				  u8 notify_fw);
+	int (*ll2_get_stats)(void *rdma_cxt,
+			     u8 connection_handle,
+			     struct qed_ll2_stats *p_stats);
+	int (*ll2_set_mac_filter)(struct qed_dev *cdev,
+				  u8 *old_mac_address, u8 *new_mac_address);
+
 };
 
 const struct qed_rdma_ops *qed_get_rdma_ops(void);
-- 
2.9.4

[PATCH net-next 6/8] qed: No need for LL2 frags indication

[Yuval Mintz]

This is a legacy leftover; There's no current flow where 'frags_mapped'
would be set.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 31 ++++++++-----------------------
 1 file changed, 8 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index b222b2b..2a68fb9 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -73,7 +73,6 @@ struct qed_cb_ll2_info {
 	int rx_cnt;
 	u32 rx_size;
 	u8 handle;
-	bool frags_mapped;
 
 	/* Lock protecting LL2 buffer lists in sleepless context */
 	spinlock_t lock;
@@ -108,12 +107,6 @@ static void qed_ll2b_complete_tx_packet(void *cxt,
 		cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb,
 				      b_last_fragment);
 
-	if (cdev->ll2->frags_mapped)
-		/* Case where mapped frags were received, need to
-		 * free skb with nr_frags marked as 0
-		 */
-		skb_shinfo(skb)->nr_frags = 0;
-
 	dev_kfree_skb_any(skb);
 }
 
@@ -2100,7 +2093,6 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 	spin_lock_init(&cdev->ll2->lock);
 	cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN +
 			     L1_CACHE_BYTES + params->mtu;
-	cdev->ll2->frags_mapped = params->frags_mapped;
 
 	/*Allocate memory for LL2 */
 	DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n",
@@ -2313,21 +2305,14 @@ static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb)
 
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		frag = &skb_shinfo(skb)->frags[i];
-		if (!cdev->ll2->frags_mapped) {
-			mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0,
-						   skb_frag_size(frag),
-						   DMA_TO_DEVICE);
-
-			if (unlikely(dma_mapping_error(&cdev->pdev->dev,
-						       mapping))) {
-				DP_NOTICE(cdev,
-					  "Unable to map frag - dropping packet\n");
-				rc = -ENOMEM;
-				goto err;
-			}
-		} else {
-			mapping = page_to_phys(skb_frag_page(frag)) |
-			    frag->page_offset;
+
+		mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0,
+					   skb_frag_size(frag), DMA_TO_DEVICE);
+
+		if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) {
+			DP_NOTICE(cdev,
+				  "Unable to map frag - dropping packet\n");
+			goto err;
 		}
 
 		rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev),
-- 
2.9.4

[PATCH net-next 3/8] qed: Cleaner seperation of LL2 inputs

[Yuval Mintz]

A LL2 connection [qed_ll2_info] has a sub-structure of type qed_ll2_conn
that contain various inputs for ll2 acquisition, but the connection also
utilizes a couple of other inputs.

Restructure the input structure to include all the inputs and refactor
the code necessary to populate those.

Signed-off-by: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c  | 379 +++++++++++++++--------------
 drivers/net/ethernet/qlogic/qed/qed_ll2.h  |  42 +---
 drivers/net/ethernet/qlogic/qed/qed_roce.c |  31 +--
 include/linux/qed/qed_ll2_if.h             |  38 +++
 4 files changed, 261 insertions(+), 229 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 46b71a6..fcf4ea9 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -315,7 +315,7 @@ static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 		list_del(&p_pkt->list_entry);
 		b_last_packet = list_empty(&p_tx->active_descq);
 		list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
-		if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+		if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) {
 			struct qed_ooo_buffer *p_buffer;
 
 			p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
@@ -327,7 +327,7 @@ static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 			b_last_frag =
 				p_tx->cur_completing_bd_idx == p_pkt->bd_used;
 			tx_frag = p_pkt->bds_set[0].tx_frag;
-			if (p_ll2_conn->conn.gsi_enable)
+			if (p_ll2_conn->input.gsi_enable)
 				qed_ll2b_release_tx_gsi_packet(p_hwfn,
 							       p_ll2_conn->
 							       my_id,
@@ -396,7 +396,7 @@ static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 
 		spin_unlock_irqrestore(&p_tx->lock, flags);
 		tx_frag = p_pkt->bds_set[0].tx_frag;
-		if (p_ll2_conn->conn.gsi_enable)
+		if (p_ll2_conn->input.gsi_enable)
 			qed_ll2b_complete_tx_gsi_packet(p_hwfn,
 							p_ll2_conn->my_id,
 							p_pkt->cookie,
@@ -495,7 +495,7 @@ qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
 	if (!p_pkt) {
 		DP_NOTICE(p_hwfn,
 			  "[%d] LL2 Rx completion but active_descq is empty\n",
-			  p_ll2_conn->conn.conn_type);
+			  p_ll2_conn->input.conn_type);
 
 		return -EIO;
 	}
@@ -522,7 +522,7 @@ qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
 
 static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
 {
-	struct qed_ll2_info *p_ll2_conn = cookie;
+	struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie;
 	struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
 	union core_rx_cqe_union *cqe = NULL;
 	u16 cq_new_idx = 0, cq_old_idx = 0;
@@ -536,7 +536,9 @@ static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
 	while (cq_new_idx != cq_old_idx) {
 		bool b_last_cqe = (cq_new_idx == cq_old_idx);
 
-		cqe = qed_chain_consume(&p_rx->rcq_chain);
+		cqe =
+		    (union core_rx_cqe_union *)
+		    qed_chain_consume(&p_rx->rcq_chain);
 		cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
 
 		DP_VERBOSE(p_hwfn,
@@ -591,7 +593,7 @@ static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 
 		list_move_tail(&p_pkt->list_entry, &p_rx->free_descq);
 
-		if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+		if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) {
 			struct qed_ooo_buffer *p_buffer;
 
 			p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
@@ -606,7 +608,6 @@ static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 	}
 }
 
-#if IS_ENABLED(CONFIG_QED_ISCSI)
 static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags)
 {
 	u8 bd_flags = 0;
@@ -782,7 +783,7 @@ qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
 		tx_pkt.vlan = p_buffer->vlan;
 		tx_pkt.bd_flags = bd_flags;
 		tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w;
-		tx_pkt.tx_dest = p_ll2_conn->conn.tx_dest;
+		tx_pkt.tx_dest = p_ll2_conn->tx_dest;
 		tx_pkt.first_frag = first_frag;
 		tx_pkt.first_frag_len = p_buffer->packet_length;
 		tx_pkt.cookie = p_buffer;
@@ -895,60 +896,11 @@ static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
 	return 0;
 }
 
-static int
-qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_info *p_ll2_info,
-			       u16 rx_num_ooo_buffers, u16 mtu)
-{
-	struct qed_ooo_buffer *p_buf = NULL;
-	void *p_virt;
-	u16 buf_idx;
-	int rc = 0;
-
-	if (p_ll2_info->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO)
-		return rc;
-
-	if (!rx_num_ooo_buffers)
-		return -EINVAL;
-
-	for (buf_idx = 0; buf_idx < rx_num_ooo_buffers; buf_idx++) {
-		p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL);
-		if (!p_buf) {
-			rc = -ENOMEM;
-			goto out;
-		}
-
-		p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE;
-		p_buf->rx_buffer_size = (p_buf->rx_buffer_size +
-					 ETH_CACHE_LINE_SIZE - 1) &
-					~(ETH_CACHE_LINE_SIZE - 1);
-		p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
-					    p_buf->rx_buffer_size,
-					    &p_buf->rx_buffer_phys_addr,
-					    GFP_KERNEL);
-		if (!p_virt) {
-			kfree(p_buf);
-			rc = -ENOMEM;
-			goto out;
-		}
-
-		p_buf->rx_buffer_virt_addr = p_virt;
-		qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf);
-	}
-
-	DP_VERBOSE(p_hwfn, QED_MSG_LL2,
-		   "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n",
-		   rx_num_ooo_buffers, p_buf->rx_buffer_size);
-
-out:
-	return rc;
-}
-
 static void
 qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
 				 struct qed_ll2_info *p_ll2_conn)
 {
-	if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO)
+	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
 		return;
 
 	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
@@ -960,7 +912,7 @@ static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
 {
 	struct qed_ooo_buffer *p_buffer;
 
-	if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO)
+	if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
 		return;
 
 	qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
@@ -987,69 +939,11 @@ static void qed_ll2_stop_ooo(struct qed_dev *cdev)
 	*handle = QED_LL2_UNUSED_HANDLE;
 }
 
-static int qed_ll2_start_ooo(struct qed_dev *cdev,
-			     struct qed_ll2_params *params)
-{
-	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
-	u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
-	struct qed_ll2_conn ll2_info = { 0 };
-	int rc;
-
-	ll2_info.conn_type = QED_LL2_TYPE_ISCSI_OOO;
-	ll2_info.mtu = params->mtu;
-	ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets;
-	ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
-	ll2_info.tx_tc = OOO_LB_TC;
-	ll2_info.tx_dest = CORE_TX_DEST_LB;
-
-	rc = qed_ll2_acquire_connection(hwfn, &ll2_info,
-					QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,
-					handle);
-	if (rc) {
-		DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n");
-		goto out;
-	}
-
-	rc = qed_ll2_establish_connection(hwfn, *handle);
-	if (rc) {
-		DP_INFO(cdev, "Failed to establist LL2 OOO connection\n");
-		goto fail;
-	}
-
-	return 0;
-
-fail:
-	qed_ll2_release_connection(hwfn, *handle);
-out:
-	*handle = QED_LL2_UNUSED_HANDLE;
-	return rc;
-}
-#else /* IS_ENABLED(CONFIG_QED_ISCSI) */
-static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn,
-				     void *p_cookie) { return -EINVAL; }
-static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn,
-				     void *p_cookie) { return -EINVAL; }
-static inline int
-qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_info *p_ll2_info,
-			       u16 rx_num_ooo_buffers, u16 mtu) { return 0; }
-static inline void
-qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
-				 struct qed_ll2_info *p_ll2_conn) { return; }
-static inline void
-qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_info *p_ll2_conn) { return; }
-static inline void qed_ll2_stop_ooo(struct qed_dev *cdev) { return; }
-static inline int qed_ll2_start_ooo(struct qed_dev *cdev,
-				    struct qed_ll2_params *params)
-				    { return -EINVAL; }
-#endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
-
 static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
 				     struct qed_ll2_info *p_ll2_conn,
 				     u8 action_on_error)
 {
-	enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type;
+	enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
 	struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
 	struct core_rx_start_ramrod_data *p_ramrod = NULL;
 	struct qed_spq_entry *p_ent = NULL;
@@ -1075,16 +969,15 @@ static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
 	p_ramrod->sb_index = p_rx->rx_sb_index;
 	p_ramrod->complete_event_flg = 1;
 
-	p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu);
-	DMA_REGPAIR_LE(p_ramrod->bd_base,
-		       p_rx->rxq_chain.p_phys_addr);
+	p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
+	DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr);
 	cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain);
 	p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size);
 	DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr,
 		       qed_chain_get_pbl_phys(&p_rx->rcq_chain));
 
-	p_ramrod->drop_ttl0_flg = p_ll2_conn->conn.rx_drop_ttl0_flg;
-	p_ramrod->inner_vlan_removal_en = p_ll2_conn->conn.rx_vlan_removal_en;
+	p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg;
+	p_ramrod->inner_vlan_removal_en = p_ll2_conn->input.rx_vlan_removal_en;
 	p_ramrod->queue_id = p_ll2_conn->queue_id;
 	p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_ISCSI_OOO) ? 0
 									  : 1;
@@ -1099,14 +992,14 @@ static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
 	}
 
 	p_ramrod->action_on_error.error_type = action_on_error;
-	p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable;
+	p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
 	return qed_spq_post(p_hwfn, p_ent, NULL);
 }
 
 static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
 				     struct qed_ll2_info *p_ll2_conn)
 {
-	enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type;
+	enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
 	struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
 	struct core_tx_start_ramrod_data *p_ramrod = NULL;
 	struct qed_spq_entry *p_ent = NULL;
@@ -1117,7 +1010,7 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
 	if (!QED_LL2_TX_REGISTERED(p_ll2_conn))
 		return 0;
 
-	if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO)
+	if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO)
 		p_ll2_conn->tx_stats_en = 0;
 	else
 		p_ll2_conn->tx_stats_en = 1;
@@ -1138,7 +1031,7 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
 
 	p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
 	p_ramrod->sb_index = p_tx->tx_sb_index;
-	p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu);
+	p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
 	p_ramrod->stats_en = p_ll2_conn->tx_stats_en;
 	p_ramrod->stats_id = p_ll2_conn->tx_stats_id;
 
@@ -1147,7 +1040,7 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
 	pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain);
 	p_ramrod->pbl_size = cpu_to_le16(pbl_size);
 
-	switch (p_ll2_conn->conn.tx_tc) {
+	switch (p_ll2_conn->input.tx_tc) {
 	case LB_TC:
 		pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
 		break;
@@ -1177,7 +1070,8 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
 		DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type);
 	}
 
-	p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable;
+	p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
+
 	return qed_spq_post(p_hwfn, p_ent, NULL);
 }
 
@@ -1233,20 +1127,20 @@ static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn,
 
 static int
 qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
-			      struct qed_ll2_info *p_ll2_info, u16 rx_num_desc)
+			      struct qed_ll2_info *p_ll2_info)
 {
 	struct qed_ll2_rx_packet *p_descq;
 	u32 capacity;
 	int rc = 0;
 
-	if (!rx_num_desc)
+	if (!p_ll2_info->input.rx_num_desc)
 		goto out;
 
 	rc = qed_chain_alloc(p_hwfn->cdev,
 			     QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 			     QED_CHAIN_MODE_NEXT_PTR,
 			     QED_CHAIN_CNT_TYPE_U16,
-			     rx_num_desc,
+			     p_ll2_info->input.rx_num_desc,
 			     sizeof(struct core_rx_bd),
 			     &p_ll2_info->rx_queue.rxq_chain);
 	if (rc) {
@@ -1268,7 +1162,7 @@ qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
 			     QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 			     QED_CHAIN_MODE_PBL,
 			     QED_CHAIN_CNT_TYPE_U16,
-			     rx_num_desc,
+			     p_ll2_info->input.rx_num_desc,
 			     sizeof(struct core_rx_fast_path_cqe),
 			     &p_ll2_info->rx_queue.rcq_chain);
 	if (rc) {
@@ -1278,28 +1172,27 @@ qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
 
 	DP_VERBOSE(p_hwfn, QED_MSG_LL2,
 		   "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n",
-		   p_ll2_info->conn.conn_type, rx_num_desc);
+		   p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc);
 
 out:
 	return rc;
 }
 
 static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn,
-					 struct qed_ll2_info *p_ll2_info,
-					 u16 tx_num_desc)
+					 struct qed_ll2_info *p_ll2_info)
 {
 	struct qed_ll2_tx_packet *p_descq;
 	u32 capacity;
 	int rc = 0;
 
-	if (!tx_num_desc)
+	if (!p_ll2_info->input.tx_num_desc)
 		goto out;
 
 	rc = qed_chain_alloc(p_hwfn->cdev,
 			     QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 			     QED_CHAIN_MODE_PBL,
 			     QED_CHAIN_CNT_TYPE_U16,
-			     tx_num_desc,
+			     p_ll2_info->input.tx_num_desc,
 			     sizeof(struct core_tx_bd),
 			     &p_ll2_info->tx_queue.txq_chain);
 	if (rc)
@@ -1316,28 +1209,95 @@ static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn,
 
 	DP_VERBOSE(p_hwfn, QED_MSG_LL2,
 		   "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n",
-		   p_ll2_info->conn.conn_type, tx_num_desc);
+		   p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc);
 
 out:
 	if (rc)
 		DP_NOTICE(p_hwfn,
 			  "Can't allocate memory for Tx LL2 with 0x%08x buffers\n",
-			  tx_num_desc);
+			  p_ll2_info->input.tx_num_desc);
+	return rc;
+}
+
+static int
+qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
+			       struct qed_ll2_info *p_ll2_info, u16 mtu)
+{
+	struct qed_ooo_buffer *p_buf = NULL;
+	void *p_virt;
+	u16 buf_idx;
+	int rc = 0;
+
+	if (p_ll2_info->input.conn_type != QED_LL2_TYPE_ISCSI_OOO)
+		return rc;
+
+	/* Correct number of requested OOO buffers if needed */
+	if (!p_ll2_info->input.rx_num_ooo_buffers) {
+		u16 num_desc = p_ll2_info->input.rx_num_desc;
+
+		if (!num_desc)
+			return -EINVAL;
+		p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2;
+	}
+
+	for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers;
+	     buf_idx++) {
+		p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL);
+		if (!p_buf) {
+			rc = -ENOMEM;
+			goto out;
+		}
+
+		p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE;
+		p_buf->rx_buffer_size = (p_buf->rx_buffer_size +
+					 ETH_CACHE_LINE_SIZE - 1) &
+					~(ETH_CACHE_LINE_SIZE - 1);
+		p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+					    p_buf->rx_buffer_size,
+					    &p_buf->rx_buffer_phys_addr,
+					    GFP_KERNEL);
+		if (!p_virt) {
+			kfree(p_buf);
+			rc = -ENOMEM;
+			goto out;
+		}
+
+		p_buf->rx_buffer_virt_addr = p_virt;
+		qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf);
+	}
+
+	DP_VERBOSE(p_hwfn, QED_MSG_LL2,
+		   "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n",
+		   p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size);
+
+out:
 	return rc;
 }
 
+static enum core_error_handle
+qed_ll2_get_error_choice(enum qed_ll2_error_handle err)
+{
+	switch (err) {
+	case QED_LL2_DROP_PACKET:
+		return LL2_DROP_PACKET;
+	case QED_LL2_DO_NOTHING:
+		return LL2_DO_NOTHING;
+	case QED_LL2_ASSERT:
+		return LL2_ASSERT;
+	default:
+		return LL2_DO_NOTHING;
+	}
+}
+
 int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_conn *p_params,
-			       u16 rx_num_desc,
-			       u16 tx_num_desc,
-			       u8 *p_connection_handle)
+			       struct qed_ll2_acquire_data *data)
 {
 	qed_int_comp_cb_t comp_rx_cb, comp_tx_cb;
 	struct qed_ll2_info *p_ll2_info = NULL;
+	u8 i, *p_tx_max;
 	int rc;
-	u8 i;
 
-	if (!p_connection_handle || !p_hwfn->p_ll2_info)
+	if (!data->p_connection_handle || !p_hwfn->p_ll2_info)
 		return -EINVAL;
 
 	/* Find a free connection to be used */
@@ -1356,23 +1316,33 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 	if (!p_ll2_info)
 		return -EBUSY;
 
-	p_ll2_info->conn = *p_params;
+	memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input));
 
-	rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info, rx_num_desc);
+	p_ll2_info->tx_dest = (data->input.tx_dest == QED_LL2_TX_DEST_NW) ?
+			      CORE_TX_DEST_NW : CORE_TX_DEST_LB;
+
+	/* Correct maximum number of Tx BDs */
+	p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet;
+	if (*p_tx_max == 0)
+		*p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET;
+	else
+		*p_tx_max = min_t(u8, *p_tx_max,
+				  CORE_LL2_TX_MAX_BDS_PER_PACKET);
+	rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info);
 	if (rc)
 		goto q_allocate_fail;
 
-	rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info, tx_num_desc);
+	rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info);
 	if (rc)
 		goto q_allocate_fail;
 
 	rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info,
-					    rx_num_desc * 2, p_params->mtu);
+					    data->input.mtu);
 	if (rc)
 		goto q_allocate_fail;
 
 	/* Register callbacks for the Rx/Tx queues */
-	if (p_params->conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+	if (data->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) {
 		comp_rx_cb = qed_ll2_lb_rxq_completion;
 		comp_tx_cb = qed_ll2_lb_txq_completion;
 	} else {
@@ -1380,7 +1350,7 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 		comp_tx_cb = qed_ll2_txq_completion;
 	}
 
-	if (rx_num_desc) {
+	if (data->input.rx_num_desc) {
 		qed_int_register_cb(p_hwfn, comp_rx_cb,
 				    &p_hwfn->p_ll2_info[i],
 				    &p_ll2_info->rx_queue.rx_sb_index,
@@ -1388,7 +1358,7 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 		p_ll2_info->rx_queue.b_cb_registred = true;
 	}
 
-	if (tx_num_desc) {
+	if (data->input.tx_num_desc) {
 		qed_int_register_cb(p_hwfn,
 				    comp_tx_cb,
 				    &p_hwfn->p_ll2_info[i],
@@ -1397,7 +1367,7 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 		p_ll2_info->tx_queue.b_cb_registred = true;
 	}
 
-	*p_connection_handle = i;
+	*data->p_connection_handle = i;
 	return rc;
 
 q_allocate_fail:
@@ -1408,18 +1378,21 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
 static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn,
 					   struct qed_ll2_info *p_ll2_conn)
 {
+	enum qed_ll2_error_handle error_input;
+	enum core_error_handle error_mode;
 	u8 action_on_error = 0;
 
 	if (!QED_LL2_RX_REGISTERED(p_ll2_conn))
 		return 0;
 
 	DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0);
-
+	error_input = p_ll2_conn->input.ai_err_packet_too_big;
+	error_mode = qed_ll2_get_error_choice(error_input);
 	SET_FIELD(action_on_error,
-		  CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG,
-		  p_ll2_conn->conn.ai_err_packet_too_big);
-	SET_FIELD(action_on_error,
-		  CORE_RX_ACTION_ON_ERROR_NO_BUFF, p_ll2_conn->conn.ai_err_no_buf);
+		  CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode);
+	error_input = p_ll2_conn->input.ai_err_no_buf;
+	error_mode = qed_ll2_get_error_choice(error_input);
+	SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode);
 
 	return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error);
 }
@@ -1503,7 +1476,7 @@ int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
 
 	qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn);
 
-	if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) {
+	if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
 		qed_llh_add_protocol_filter(p_hwfn, p_ptt,
 					    0x8906, 0,
 					    QED_LLH_FILTER_ETHERTYPE);
@@ -1667,7 +1640,7 @@ qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
 		   "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Tx Producer at [0x%04x] - set with a %04x bytes %02x BDs buffer at %08x:%08x\n",
 		   p_ll2->queue_id,
 		   p_ll2->cid,
-		   p_ll2->conn.conn_type,
+		   p_ll2->input.conn_type,
 		   prod_idx,
 		   pkt->first_frag_len,
 		   pkt->num_of_bds,
@@ -1742,7 +1715,8 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
 		   (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
 		   "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n",
 		   p_ll2_conn->queue_id,
-		   p_ll2_conn->cid, p_ll2_conn->conn.conn_type, db_msg.spq_prod);
+		   p_ll2_conn->cid,
+		   p_ll2_conn->input.conn_type, db_msg.spq_prod);
 }
 
 int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
@@ -1866,10 +1840,10 @@ int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
 		qed_ll2_rxq_flush(p_hwfn, connection_handle);
 	}
 
-	if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO)
+	if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO)
 		qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
 
-	if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) {
+	if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
 		qed_llh_remove_protocol_filter(p_hwfn, p_ptt,
 					       0x8906, 0,
 					       QED_LLH_FILTER_ETHERTYPE);
@@ -2054,11 +2028,68 @@ static void qed_ll2_register_cb_ops(struct qed_dev *cdev,
 	cdev->ll2->cb_cookie = cookie;
 }
 
+static void qed_ll2_set_conn_data(struct qed_dev *cdev,
+				  struct qed_ll2_acquire_data *data,
+				  struct qed_ll2_params *params,
+				  enum qed_ll2_conn_type conn_type,
+				  u8 *handle, bool lb, u8 gsi_enable)
+{
+	memset(data, 0, sizeof(*data));
+
+	data->input.conn_type = conn_type;
+	data->input.mtu = params->mtu;
+	data->input.rx_num_desc = QED_LL2_RX_SIZE;
+	data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets;
+	data->input.rx_vlan_removal_en = params->rx_vlan_stripping;
+	data->input.tx_num_desc = QED_LL2_TX_SIZE;
+	data->input.gsi_enable = gsi_enable;
+	data->p_connection_handle = handle;
+	if (lb) {
+		data->input.tx_tc = OOO_LB_TC;
+		data->input.tx_dest = QED_LL2_TX_DEST_LB;
+	} else {
+		data->input.tx_tc = 0;
+		data->input.tx_dest = QED_LL2_TX_DEST_NW;
+	}
+}
+
+static int qed_ll2_start_ooo(struct qed_dev *cdev,
+			     struct qed_ll2_params *params)
+{
+	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
+	u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
+	struct qed_ll2_acquire_data data;
+	int rc;
+
+	qed_ll2_set_conn_data(cdev, &data, params,
+			      QED_LL2_TYPE_ISCSI_OOO, handle, true, 0);
+
+	rc = qed_ll2_acquire_connection(hwfn, &data);
+	if (rc) {
+		DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n");
+		goto out;
+	}
+
+	rc = qed_ll2_establish_connection(hwfn, *handle);
+	if (rc) {
+		DP_INFO(cdev, "Failed to establist LL2 OOO connection\n");
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	qed_ll2_release_connection(hwfn, *handle);
+out:
+	*handle = QED_LL2_UNUSED_HANDLE;
+	return rc;
+}
+
 static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 {
-	struct qed_ll2_conn ll2_info;
 	struct qed_ll2_buffer *buffer, *tmp_buffer;
 	enum qed_ll2_conn_type conn_type;
+	struct qed_ll2_acquire_data data;
 	struct qed_ptt *p_ptt;
 	int rc, i;
 	u8 gsi_enable = 1;
@@ -2106,20 +2137,10 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
 		conn_type = QED_LL2_TYPE_TEST;
 	}
 
-	/* Prepare the temporary ll2 information */
-	memset(&ll2_info, 0, sizeof(ll2_info));
-
-	ll2_info.conn_type = conn_type;
-	ll2_info.mtu = params->mtu;
-	ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets;
-	ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
-	ll2_info.tx_tc = 0;
-	ll2_info.tx_dest = CORE_TX_DEST_NW;
-	ll2_info.gsi_enable = gsi_enable;
+	qed_ll2_set_conn_data(cdev, &data, params, conn_type,
+			      &cdev->ll2->handle, false, gsi_enable);
 
-	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info,
-					QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,
-					&cdev->ll2->handle);
+	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data);
 	if (rc) {
 		DP_INFO(cdev, "Failed to acquire LL2 connection\n");
 		goto fail;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
index 96af50b..3caaad5 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
@@ -47,17 +47,6 @@
 
 #define QED_MAX_NUM_OF_LL2_CONNECTIONS                    (4)
 
-enum qed_ll2_conn_type {
-	QED_LL2_TYPE_FCOE,
-	QED_LL2_TYPE_ISCSI,
-	QED_LL2_TYPE_TEST,
-	QED_LL2_TYPE_ISCSI_OOO,
-	QED_LL2_TYPE_RESERVED2,
-	QED_LL2_TYPE_ROCE,
-	QED_LL2_TYPE_RESERVED3,
-	MAX_QED_LL2_RX_CONN_TYPE
-};
-
 struct qed_ll2_rx_packet {
 	struct list_head list_entry;
 	struct core_rx_bd_with_buff_len *rxq_bd;
@@ -123,27 +112,17 @@ struct qed_ll2_tx_queue {
 	bool b_completing_packet;
 };
 
-struct qed_ll2_conn {
-	enum qed_ll2_conn_type conn_type;
-	u16 mtu;
-	u8 rx_drop_ttl0_flg;
-	u8 rx_vlan_removal_en;
-	u8 tx_tc;
-	enum core_tx_dest tx_dest;
-	enum core_error_handle ai_err_packet_too_big;
-	enum core_error_handle ai_err_no_buf;
-	u8 gsi_enable;
-};
-
 struct qed_ll2_info {
 	/* Lock protecting the state of LL2 */
 	struct mutex mutex;
-	struct qed_ll2_conn conn;
+
+	struct qed_ll2_acquire_data_inputs input;
 	u32 cid;
 	u8 my_id;
 	u8 queue_id;
 	u8 tx_stats_id;
 	bool b_active;
+	enum core_tx_dest tx_dest;
 	u8 tx_stats_en;
 	struct qed_ll2_rx_queue rx_queue;
 	struct qed_ll2_tx_queue tx_queue;
@@ -154,20 +133,13 @@ struct qed_ll2_info {
  *        starts rx & tx (if relevant) queues pair. Provides
  *        connecion handler as output parameter.
  *
- * @param p_hwfn
- * @param p_params		Contain various configuration properties
- * @param rx_num_desc
- * @param tx_num_desc
- *
- * @param p_connection_handle  Output container for LL2 connection's handle
  *
- * @return 0 on success, failure otherwise
+ * @param p_hwfn
+ * @param data - describes connection parameters
+ * @return int
  */
 int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
-			       struct qed_ll2_conn *p_params,
-			       u16 rx_num_desc,
-			       u16 tx_num_desc,
-			       u8 *p_connection_handle);
+			       struct qed_ll2_acquire_data *data);
 
 /**
  * @brief qed_ll2_establish_connection - start previously
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index afc63c0..33abcf1 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -2818,7 +2818,7 @@ static int qed_roce_ll2_start(struct qed_dev *cdev,
 {
 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
 	struct qed_roce_ll2_info *roce_ll2;
-	struct qed_ll2_conn ll2_params;
+	struct qed_ll2_acquire_data data;
 	int rc;
 
 	if (!params) {
@@ -2844,25 +2844,26 @@ static int qed_roce_ll2_start(struct qed_dev *cdev,
 		DP_ERR(cdev, "qed roce ll2 start: failed memory allocation\n");
 		return -ENOMEM;
 	}
+
 	roce_ll2->handle = QED_LL2_UNUSED_HANDLE;
 	roce_ll2->cbs = params->cbs;
 	roce_ll2->cb_cookie = params->cb_cookie;
 	mutex_init(&roce_ll2->lock);
 
-	memset(&ll2_params, 0, sizeof(ll2_params));
-	ll2_params.conn_type = QED_LL2_TYPE_ROCE;
-	ll2_params.mtu = params->mtu;
-	ll2_params.rx_drop_ttl0_flg = true;
-	ll2_params.rx_vlan_removal_en = false;
-	ll2_params.tx_dest = CORE_TX_DEST_NW;
-	ll2_params.ai_err_packet_too_big = LL2_DROP_PACKET;
-	ll2_params.ai_err_no_buf = LL2_DROP_PACKET;
-	ll2_params.gsi_enable = true;
-
-	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_params,
-					params->max_rx_buffers,
-					params->max_tx_buffers,
-					&roce_ll2->handle);
+	memset(&data, 0, sizeof(data));
+	data.input.conn_type = QED_LL2_TYPE_ROCE;
+	data.input.mtu = params->mtu;
+	data.input.rx_num_desc = params->max_rx_buffers;
+	data.input.tx_num_desc = params->max_tx_buffers;
+	data.input.rx_drop_ttl0_flg = true;
+	data.input.rx_vlan_removal_en = false;
+	data.input.tx_dest = QED_LL2_TX_DEST_NW;
+	data.input.ai_err_packet_too_big = LL2_DROP_PACKET;
+	data.input.ai_err_no_buf = LL2_DROP_PACKET;
+	data.p_connection_handle = &roce_ll2->handle;
+	data.input.gsi_enable = true;
+
+	rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data);
 	if (rc) {
 		DP_ERR(cdev,
 		       "qed roce ll2 start: failed to acquire LL2 connection (rc=%d)\n",
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index 5145278..a8f58d9 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -43,6 +43,17 @@
 #include <linux/slab.h>
 #include <linux/qed/qed_if.h>
 
+enum qed_ll2_conn_type {
+	QED_LL2_TYPE_FCOE,
+	QED_LL2_TYPE_ISCSI,
+	QED_LL2_TYPE_TEST,
+	QED_LL2_TYPE_ISCSI_OOO,
+	QED_LL2_TYPE_RESERVED2,
+	QED_LL2_TYPE_ROCE,
+	QED_LL2_TYPE_RESERVED3,
+	MAX_QED_LL2_RX_CONN_TYPE
+};
+
 enum qed_ll2_roce_flavor_type {
 	QED_LL2_ROCE,
 	QED_LL2_RROCE,
@@ -55,6 +66,12 @@ enum qed_ll2_tx_dest {
 	QED_LL2_TX_DEST_MAX
 };
 
+enum qed_ll2_error_handle {
+	QED_LL2_DROP_PACKET,
+	QED_LL2_DO_NOTHING,
+	QED_LL2_ASSERT,
+};
+
 struct qed_ll2_stats {
 	u64 gsi_invalid_hdr;
 	u64 gsi_invalid_pkt_length;
@@ -104,6 +121,27 @@ struct qed_ll2_comp_rx_data {
 	u16 qp_id;
 };
 
+struct qed_ll2_acquire_data_inputs {
+	enum qed_ll2_conn_type conn_type;
+	u16 mtu;
+	u16 rx_num_desc;
+	u16 rx_num_ooo_buffers;
+	u8 rx_drop_ttl0_flg;
+	u8 rx_vlan_removal_en;
+	u16 tx_num_desc;
+	u8 tx_max_bds_per_packet;
+	u8 tx_tc;
+	enum qed_ll2_tx_dest tx_dest;
+	enum qed_ll2_error_handle ai_err_packet_too_big;
+	enum qed_ll2_error_handle ai_err_no_buf;
+	u8 gsi_enable;
+};
+
+struct qed_ll2_acquire_data {
+	struct qed_ll2_acquire_data_inputs input;
+	/* Output container for LL2 connection's handle */
+	u8 *p_connection_handle;
+};
 struct qed_ll2_tx_pkt_info {
 	u8 num_of_bds;
 	u16 vlan;
-- 
2.9.4

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[PATCH net-next 7/8] qed: Call rx_release_cb() when flushing LL2

[Yuval Mintz]

Driver to inform the connection owner that the its buffers are being
released as part of a flush.

Signed-off-by: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 2a68fb9..c6172a77e 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -525,10 +525,6 @@ static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 	p_rx = &p_ll2_conn->rx_queue;
 
 	while (!list_empty(&p_rx->active_descq)) {
-		dma_addr_t rx_buf_addr;
-		void *cookie;
-		bool b_last;
-
 		p_pkt = list_first_entry(&p_rx->active_descq,
 					 struct qed_ll2_rx_packet, list_entry);
 		if (!p_pkt)
@@ -543,10 +539,15 @@ static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
 			qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
 						p_buffer);
 		} else {
-			rx_buf_addr = p_pkt->rx_buf_addr;
-			cookie = p_pkt->cookie;
+			dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr;
+			void *cookie = p_pkt->cookie;
+			bool b_last;
 
 			b_last = list_empty(&p_rx->active_descq);
+			p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie,
+						      p_ll2_conn->my_id,
+						      cookie,
+						      rx_buf_addr, b_last);
 		}
 	}
 }
-- 
2.9.4

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[PATCH net-next 8/8] qed: collect GSI port statistics

[Yuval Mintz]

The LL2 statistics already have place holders for these, but haven't
populated them so far.

Signed-off-by: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index c6172a77e..0e26193 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -1902,6 +1902,27 @@ void qed_ll2_free(struct qed_hwfn *p_hwfn)
 	p_hwfn->p_ll2_info = NULL;
 }
 
+static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn,
+				    struct qed_ptt *p_ptt,
+				    struct qed_ll2_stats *p_stats)
+{
+	struct core_ll2_port_stats port_stats;
+
+	memset(&port_stats, 0, sizeof(port_stats));
+	qed_memcpy_from(p_hwfn, p_ptt, &port_stats,
+			BAR0_MAP_REG_TSDM_RAM +
+			TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)),
+			sizeof(port_stats));
+
+	p_stats->gsi_invalid_hdr = HILO_64_REGPAIR(port_stats.gsi_invalid_hdr);
+	p_stats->gsi_invalid_pkt_length =
+	    HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length);
+	p_stats->gsi_unsupported_pkt_typ =
+	    HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ);
+	p_stats->gsi_crcchksm_error =
+	    HILO_64_REGPAIR(port_stats.gsi_crcchksm_error);
+}
+
 static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn,
 				struct qed_ptt *p_ptt,
 				struct qed_ll2_info *p_ll2_conn,
@@ -1986,6 +2007,8 @@ int qed_ll2_get_stats(void *cxt,
 		return -EINVAL;
 	}
 
+	if (p_ll2_conn->input.gsi_enable)
+		_qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats);
 	_qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
 	_qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
 	if (p_ll2_conn->tx_stats_en)
-- 
2.9.4

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