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Date: Thu, 1 Dec 2016 00:21:07 -0800
From: Manish Rangankar <manish.rangankar@...ium.com>
To: <martin.petersen@...cle.com>, <lduncan@...e.com>,
<cleech@...hat.com>
CC: <linux-scsi@...r.kernel.org>, <netdev@...r.kernel.org>,
<QLogic-Storage-Upstream@...ium.com>, <Yuval.Mintz@...ium.com>
Subject: [PATCH v3 net-next 2/3] qed: Add iSCSI out of order packet handling.
From: Yuval Mintz <yuval.mintz@...ium.com>
This patch adds out of order packet handling for hardware offloaded
iSCSI. Out of order packet handling requires driver buffer allocation
and assistance.
Signed-off-by: Arun Easi <arun.easi@...ium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@...ium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>
Reviewed-by: Hannes Reinecke <hare@...e.de>
---
drivers/net/ethernet/qlogic/qed/Makefile | 2 +-
drivers/net/ethernet/qlogic/qed/qed.h | 1 +
drivers/net/ethernet/qlogic/qed/qed_dev.c | 14 +-
drivers/net/ethernet/qlogic/qed/qed_ll2.c | 551 +++++++++++++++++++++++++++--
drivers/net/ethernet/qlogic/qed/qed_ll2.h | 9 +
drivers/net/ethernet/qlogic/qed/qed_ooo.c | 501 ++++++++++++++++++++++++++
drivers/net/ethernet/qlogic/qed/qed_ooo.h | 176 +++++++++
drivers/net/ethernet/qlogic/qed/qed_roce.c | 1 +
drivers/net/ethernet/qlogic/qed/qed_spq.c | 9 +
9 files changed, 1234 insertions(+), 30 deletions(-)
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_ooo.c
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_ooo.h
diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile
index 597e15c..729e437 100644
--- a/drivers/net/ethernet/qlogic/qed/Makefile
+++ b/drivers/net/ethernet/qlogic/qed/Makefile
@@ -6,4 +6,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o
qed-$(CONFIG_QED_LL2) += qed_ll2.o
qed-$(CONFIG_QED_RDMA) += qed_roce.o
-qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o
+qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o qed_ooo.o
diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index 15286c1..85c2c6a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -392,6 +392,7 @@ struct qed_hwfn {
/* Protocol related */
bool using_ll2;
struct qed_ll2_info *p_ll2_info;
+ struct qed_ooo_info *p_ooo_info;
struct qed_rdma_info *p_rdma_info;
struct qed_iscsi_info *p_iscsi_info;
struct qed_pf_params pf_params;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index e3612be..896429c 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -32,6 +32,7 @@
#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
+#include "qed_ooo.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_sriov.h"
@@ -156,8 +157,10 @@ void qed_resc_free(struct qed_dev *cdev)
#ifdef CONFIG_QED_LL2
qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info);
#endif
- if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+ if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
qed_iscsi_free(p_hwfn, p_hwfn->p_iscsi_info);
+ qed_ooo_free(p_hwfn, p_hwfn->p_ooo_info);
+ }
qed_iov_free(p_hwfn);
qed_dmae_info_free(p_hwfn);
qed_dcbx_info_free(p_hwfn, p_hwfn->p_dcbx_info);
@@ -415,6 +418,7 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
int qed_resc_alloc(struct qed_dev *cdev)
{
struct qed_iscsi_info *p_iscsi_info;
+ struct qed_ooo_info *p_ooo_info;
#ifdef CONFIG_QED_LL2
struct qed_ll2_info *p_ll2_info;
#endif
@@ -542,6 +546,10 @@ int qed_resc_alloc(struct qed_dev *cdev)
if (!p_iscsi_info)
goto alloc_no_mem;
p_hwfn->p_iscsi_info = p_iscsi_info;
+ p_ooo_info = qed_ooo_alloc(p_hwfn);
+ if (!p_ooo_info)
+ goto alloc_no_mem;
+ p_hwfn->p_ooo_info = p_ooo_info;
}
/* DMA info initialization */
@@ -596,8 +604,10 @@ void qed_resc_setup(struct qed_dev *cdev)
if (p_hwfn->using_ll2)
qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info);
#endif
- if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+ if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
qed_iscsi_setup(p_hwfn, p_hwfn->p_iscsi_info);
+ qed_ooo_setup(p_hwfn, p_hwfn->p_ooo_info);
+ }
}
}
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 84d7e91..de4e2a2 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -36,6 +36,7 @@
#include "qed_int.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
+#include "qed_ooo.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_roce.h"
@@ -296,25 +297,34 @@ 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);
- p_tx->cur_completing_packet = *p_pkt;
- p_tx->cur_completing_bd_idx = 1;
- 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->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);
+ if (p_ll2_conn->conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+ struct qed_ooo_buffer *p_buffer;
+ p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
+ qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
+ p_buffer);
+ } else {
+ p_tx->cur_completing_packet = *p_pkt;
+ p_tx->cur_completing_bd_idx = 1;
+ 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->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);
+ }
}
}
@@ -540,12 +550,457 @@ 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);
- rx_buf_addr = p_pkt->rx_buf_addr;
- cookie = p_pkt->cookie;
+ if (p_ll2_conn->conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+ struct qed_ooo_buffer *p_buffer;
+
+ p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
+ 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;
+
+ b_last = list_empty(&p_rx->active_descq);
+ }
+ }
+}
+
+#if IS_ENABLED(CONFIG_QED_ISCSI)
+static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags)
+{
+ u8 bd_flags = 0;
+
+ if (GET_FIELD(parse_flags, PARSING_AND_ERR_FLAGS_TAG8021QEXIST))
+ SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_VLAN_INSERTION, 1);
+
+ return bd_flags;
+}
+
+static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
+ struct qed_ll2_info *p_ll2_conn)
+{
+ struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
+ u16 packet_length = 0, parse_flags = 0, vlan = 0;
+ struct qed_ll2_rx_packet *p_pkt = NULL;
+ u32 num_ooo_add_to_peninsula = 0, cid;
+ union core_rx_cqe_union *cqe = NULL;
+ u16 cq_new_idx = 0, cq_old_idx = 0;
+ struct qed_ooo_buffer *p_buffer;
+ struct ooo_opaque *iscsi_ooo;
+ u8 placement_offset = 0;
+ u8 cqe_type;
+
+ cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
+ cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
+ if (cq_new_idx == cq_old_idx)
+ return 0;
+
+ while (cq_new_idx != cq_old_idx) {
+ struct core_rx_fast_path_cqe *p_cqe_fp;
+
+ cqe = qed_chain_consume(&p_rx->rcq_chain);
+ cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
+ cqe_type = cqe->rx_cqe_sp.type;
+
+ if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) {
+ DP_NOTICE(p_hwfn,
+ "Got a non-regular LB LL2 completion [type 0x%02x]\n",
+ cqe_type);
+ return -EINVAL;
+ }
+ p_cqe_fp = &cqe->rx_cqe_fp;
+
+ placement_offset = p_cqe_fp->placement_offset;
+ parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags);
+ packet_length = le16_to_cpu(p_cqe_fp->packet_length);
+ vlan = le16_to_cpu(p_cqe_fp->vlan);
+ iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data;
+ qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info,
+ iscsi_ooo);
+ cid = le32_to_cpu(iscsi_ooo->cid);
+
+ /* Process delete isle first */
+ if (iscsi_ooo->drop_size)
+ qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid,
+ iscsi_ooo->drop_isle,
+ iscsi_ooo->drop_size);
+
+ if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP)
+ continue;
+
+ /* Now process create/add/join isles */
+ if (list_empty(&p_rx->active_descq)) {
+ DP_NOTICE(p_hwfn,
+ "LL2 OOO RX chain has no submitted buffers\n"
+ );
+ return -EIO;
+ }
+
+ p_pkt = list_first_entry(&p_rx->active_descq,
+ struct qed_ll2_rx_packet, list_entry);
+
+ if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) ||
+ (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) ||
+ (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) ||
+ (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) ||
+ (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) {
+ if (!p_pkt) {
+ DP_NOTICE(p_hwfn,
+ "LL2 OOO RX packet is not valid\n");
+ return -EIO;
+ }
+ list_del(&p_pkt->list_entry);
+ p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
+ p_buffer->packet_length = packet_length;
+ p_buffer->parse_flags = parse_flags;
+ p_buffer->vlan = vlan;
+ p_buffer->placement_offset = placement_offset;
+ qed_chain_consume(&p_rx->rxq_chain);
+ list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
+
+ switch (iscsi_ooo->ooo_opcode) {
+ case TCP_EVENT_ADD_NEW_ISLE:
+ qed_ooo_add_new_isle(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid,
+ iscsi_ooo->ooo_isle,
+ p_buffer);
+ break;
+ case TCP_EVENT_ADD_ISLE_RIGHT:
+ qed_ooo_add_new_buffer(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid,
+ iscsi_ooo->ooo_isle,
+ p_buffer,
+ QED_OOO_RIGHT_BUF);
+ break;
+ case TCP_EVENT_ADD_ISLE_LEFT:
+ qed_ooo_add_new_buffer(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid,
+ iscsi_ooo->ooo_isle,
+ p_buffer,
+ QED_OOO_LEFT_BUF);
+ break;
+ case TCP_EVENT_JOIN:
+ qed_ooo_add_new_buffer(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid,
+ iscsi_ooo->ooo_isle +
+ 1,
+ p_buffer,
+ QED_OOO_LEFT_BUF);
+ qed_ooo_join_isles(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid, iscsi_ooo->ooo_isle);
+ break;
+ case TCP_EVENT_ADD_PEN:
+ num_ooo_add_to_peninsula++;
+ qed_ooo_put_ready_buffer(p_hwfn,
+ p_hwfn->p_ooo_info,
+ p_buffer, true);
+ break;
+ }
+ } else {
+ DP_NOTICE(p_hwfn,
+ "Unexpected event (%d) TX OOO completion\n",
+ iscsi_ooo->ooo_opcode);
+ }
+ }
+
+ return 0;
+}
+
+static void
+qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
+ struct qed_ll2_info *p_ll2_conn)
+{
+ struct qed_ooo_buffer *p_buffer;
+ int rc;
+ u16 l4_hdr_offset_w;
+ dma_addr_t first_frag;
+ u16 parse_flags;
+ u8 bd_flags;
+
+ /* Submit Tx buffers here */
+ while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn,
+ p_hwfn->p_ooo_info))) {
+ l4_hdr_offset_w = 0;
+ bd_flags = 0;
+
+ first_frag = p_buffer->rx_buffer_phys_addr +
+ p_buffer->placement_offset;
+ parse_flags = p_buffer->parse_flags;
+ bd_flags = qed_ll2_convert_rx_parse_to_tx_flags(parse_flags);
+ SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_FORCE_VLAN_MODE, 1);
+ SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_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->tx_dest, 0,
+ first_frag,
+ p_buffer->packet_length,
+ p_buffer, true);
+ if (rc) {
+ qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info,
+ p_buffer, false);
+ break;
+ }
+ }
+}
+
+static void
+qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn,
+ struct qed_ll2_info *p_ll2_conn)
+{
+ struct qed_ooo_buffer *p_buffer;
+ int rc;
+
+ while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
+ p_hwfn->p_ooo_info))) {
+ rc = qed_ll2_post_rx_buffer(p_hwfn,
+ p_ll2_conn->my_id,
+ p_buffer->rx_buffer_phys_addr,
+ 0, p_buffer, true);
+ if (rc) {
+ qed_ooo_put_free_buffer(p_hwfn,
+ p_hwfn->p_ooo_info, p_buffer);
+ break;
+ }
+ }
+}
+
+static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
+{
+ struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
+ int rc;
+
+ rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn);
+ if (rc)
+ return rc;
+
+ qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
+ qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
+
+ return 0;
+}
+
+static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
+{
+ struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
+ struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
+ struct qed_ll2_tx_packet *p_pkt = NULL;
+ struct qed_ooo_buffer *p_buffer;
+ bool b_dont_submit_rx = false;
+ u16 new_idx = 0, num_bds = 0;
+ int rc;
+
+ new_idx = le16_to_cpu(*p_tx->p_fw_cons);
+ num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
+
+ if (!num_bds)
+ return 0;
+
+ while (num_bds) {
+ if (list_empty(&p_tx->active_descq))
+ return -EINVAL;
+
+ p_pkt = list_first_entry(&p_tx->active_descq,
+ struct qed_ll2_tx_packet, list_entry);
+ if (!p_pkt)
+ return -EINVAL;
+
+ if (p_pkt->bd_used != 1) {
+ DP_NOTICE(p_hwfn,
+ "Unexpectedly many BDs(%d) in TX OOO completion\n",
+ p_pkt->bd_used);
+ return -EINVAL;
+ }
+
+ list_del(&p_pkt->list_entry);
+
+ num_bds--;
+ p_tx->bds_idx++;
+ qed_chain_consume(&p_tx->txq_chain);
+
+ p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
+ list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
+
+ if (b_dont_submit_rx) {
+ qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
+ p_buffer);
+ continue;
+ }
+
+ rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id,
+ p_buffer->rx_buffer_phys_addr, 0,
+ p_buffer, true);
+ if (rc != 0) {
+ qed_ooo_put_free_buffer(p_hwfn,
+ p_hwfn->p_ooo_info, p_buffer);
+ b_dont_submit_rx = true;
+ }
+ }
+
+ qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
+
+ 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_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_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->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);
+ u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
+
+ DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n",
+ *handle);
+
+ qed_ll2_terminate_connection(hwfn, *handle);
+ qed_ll2_release_connection(hwfn, *handle);
+ *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_info *ll2_info;
+ int rc;
+
+ ll2_info = kzalloc(sizeof(*ll2_info), GFP_KERNEL);
+ if (!ll2_info)
+ return -ENOMEM;
+ 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);
+ kfree(ll2_info);
+ if (rc) {
+ DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n");
+ goto out;
+ }
- b_last = list_empty(&p_rx->active_descq);
+ 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,
@@ -588,7 +1043,8 @@ static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
p_ramrod->drop_ttl0_flg = p_ll2_conn->rx_drop_ttl0_flg;
p_ramrod->inner_vlan_removal_en = p_ll2_conn->rx_vlan_removal_en;
p_ramrod->queue_id = p_ll2_conn->queue_id;
- p_ramrod->main_func_queue = 1;
+ p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_ISCSI_OOO) ? 0
+ : 1;
if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) &&
p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE)) {
@@ -619,6 +1075,11 @@ 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_type == QED_LL2_TYPE_ISCSI_OOO)
+ p_ll2_conn->tx_stats_en = 0;
+ else
+ p_ll2_conn->tx_stats_en = 1;
+
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = p_ll2_conn->cid;
@@ -636,7 +1097,6 @@ 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->mtu);
- p_ll2_conn->tx_stats_en = 1;
p_ramrod->stats_en = p_ll2_conn->tx_stats_en;
p_ramrod->stats_id = p_ll2_conn->tx_stats_id;
@@ -860,9 +1320,19 @@ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
if (rc)
goto q_allocate_fail;
+ rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info,
+ rx_num_desc * 2, p_params->mtu);
+ if (rc)
+ goto q_allocate_fail;
+
/* Register callbacks for the Rx/Tx queues */
- comp_rx_cb = qed_ll2_rxq_completion;
- comp_tx_cb = qed_ll2_txq_completion;
+ if (p_params->conn_type == QED_LL2_TYPE_ISCSI_OOO) {
+ comp_rx_cb = qed_ll2_lb_rxq_completion;
+ comp_tx_cb = qed_ll2_lb_txq_completion;
+ } else {
+ comp_rx_cb = qed_ll2_rxq_completion;
+ comp_tx_cb = qed_ll2_txq_completion;
+ }
if (rx_num_desc) {
qed_int_register_cb(p_hwfn, comp_rx_cb,
@@ -975,6 +1445,8 @@ int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
if (p_hwfn->hw_info.personality != QED_PCI_ETH_ROCE)
qed_wr(p_hwfn, p_hwfn->p_main_ptt, PRS_REG_USE_LIGHT_L2, 1);
+ qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn);
+
return rc;
}
@@ -1213,6 +1685,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
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)
@@ -1222,6 +1695,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
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;
@@ -1252,6 +1726,8 @@ 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) {
@@ -1266,7 +1742,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
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, CORE_TX_DEST_NW,
+ num_of_bds, tx_dest,
vlan, bd_flags, l4_hdr_offset_w,
roce_flavor,
first_frag, first_frag_len);
@@ -1341,6 +1817,9 @@ 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_type == QED_LL2_TYPE_ISCSI_OOO)
+ qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
+
return rc;
}
@@ -1371,6 +1850,8 @@ void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle)
qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid);
+ qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn);
+
mutex_lock(&p_ll2_conn->mutex);
p_ll2_conn->b_active = false;
mutex_unlock(&p_ll2_conn->mutex);
@@ -1613,6 +2094,17 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
goto release_terminate;
}
+ if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI &&
+ cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) {
+ DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n");
+ rc = qed_ll2_start_ooo(cdev, params);
+ if (rc) {
+ DP_INFO(cdev,
+ "Failed to initialize the OOO LL2 queue\n");
+ goto release_terminate;
+ }
+ }
+
p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
if (!p_ptt) {
DP_INFO(cdev, "Failed to acquire PTT\n");
@@ -1662,6 +2154,10 @@ static int qed_ll2_stop(struct qed_dev *cdev)
qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt);
eth_zero_addr(cdev->ll2_mac_address);
+ if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI &&
+ cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable)
+ qed_ll2_stop_ooo(cdev);
+
rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev),
cdev->ll2->handle);
if (rc)
@@ -1716,7 +2212,8 @@ static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb)
rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev),
cdev->ll2->handle,
1 + skb_shinfo(skb)->nr_frags,
- vlan, flags, 0, 0 /* RoCE FLAVOR */,
+ vlan, flags, 0, QED_LL2_TX_DEST_NW,
+ 0 /* RoCE FLAVOR */,
mapping, skb->len, skb, 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 4e3d62a..6625a3a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
@@ -41,6 +41,12 @@ 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;
@@ -192,6 +198,8 @@ int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
* @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
@@ -206,6 +214,7 @@ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
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);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ooo.c b/drivers/net/ethernet/qlogic/qed/qed_ooo.c
new file mode 100644
index 0000000..155abcb
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_ooo.c
@@ -0,0 +1,501 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include <linux/types.h>
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include "qed.h"
+#include "qed_iscsi.h"
+#include "qed_ll2.h"
+#include "qed_ooo.h"
+
+static struct qed_ooo_archipelago
+*qed_ooo_seek_archipelago(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info
+ *p_ooo_info,
+ u32 cid)
+{
+ struct qed_ooo_archipelago *p_archipelago = NULL;
+
+ list_for_each_entry(p_archipelago,
+ &p_ooo_info->archipelagos_list, list_entry) {
+ if (p_archipelago->cid == cid)
+ return p_archipelago;
+ }
+
+ return NULL;
+}
+
+static struct qed_ooo_isle *qed_ooo_seek_isle(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 isle)
+{
+ struct qed_ooo_archipelago *p_archipelago = NULL;
+ struct qed_ooo_isle *p_isle = NULL;
+ u8 the_num_of_isle = 1;
+
+ p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
+ if (!p_archipelago) {
+ DP_NOTICE(p_hwfn,
+ "Connection %d is not found in OOO list\n", cid);
+ return NULL;
+ }
+
+ list_for_each_entry(p_isle, &p_archipelago->isles_list, list_entry) {
+ if (the_num_of_isle == isle)
+ return p_isle;
+ the_num_of_isle++;
+ }
+
+ return NULL;
+}
+
+void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct ooo_opaque *p_cqe)
+{
+ struct qed_ooo_history *p_history = &p_ooo_info->ooo_history;
+
+ if (p_history->head_idx == p_history->num_of_cqes)
+ p_history->head_idx = 0;
+ p_history->p_cqes[p_history->head_idx] = *p_cqe;
+ p_history->head_idx++;
+}
+
+struct qed_ooo_info *qed_ooo_alloc(struct qed_hwfn *p_hwfn)
+{
+ struct qed_ooo_info *p_ooo_info;
+ u16 max_num_archipelagos = 0;
+ u16 max_num_isles = 0;
+ u32 i;
+
+ if (p_hwfn->hw_info.personality != QED_PCI_ISCSI) {
+ DP_NOTICE(p_hwfn,
+ "Failed to allocate qed_ooo_info: unknown personality\n");
+ return NULL;
+ }
+
+ max_num_archipelagos = p_hwfn->pf_params.iscsi_pf_params.num_cons;
+ max_num_isles = QED_MAX_NUM_ISLES + max_num_archipelagos;
+
+ if (!max_num_archipelagos) {
+ DP_NOTICE(p_hwfn,
+ "Failed to allocate qed_ooo_info: unknown amount of connections\n");
+ return NULL;
+ }
+
+ p_ooo_info = kzalloc(sizeof(*p_ooo_info), GFP_KERNEL);
+ if (!p_ooo_info)
+ return NULL;
+
+ INIT_LIST_HEAD(&p_ooo_info->free_buffers_list);
+ INIT_LIST_HEAD(&p_ooo_info->ready_buffers_list);
+ INIT_LIST_HEAD(&p_ooo_info->free_isles_list);
+ INIT_LIST_HEAD(&p_ooo_info->free_archipelagos_list);
+ INIT_LIST_HEAD(&p_ooo_info->archipelagos_list);
+
+ p_ooo_info->p_isles_mem = kcalloc(max_num_isles,
+ sizeof(struct qed_ooo_isle),
+ GFP_KERNEL);
+ if (!p_ooo_info->p_isles_mem)
+ goto no_isles_mem;
+
+ for (i = 0; i < max_num_isles; i++) {
+ INIT_LIST_HEAD(&p_ooo_info->p_isles_mem[i].buffers_list);
+ list_add_tail(&p_ooo_info->p_isles_mem[i].list_entry,
+ &p_ooo_info->free_isles_list);
+ }
+
+ p_ooo_info->p_archipelagos_mem =
+ kcalloc(max_num_archipelagos,
+ sizeof(struct qed_ooo_archipelago),
+ GFP_KERNEL);
+ if (!p_ooo_info->p_archipelagos_mem)
+ goto no_archipelagos_mem;
+
+ for (i = 0; i < max_num_archipelagos; i++) {
+ INIT_LIST_HEAD(&p_ooo_info->p_archipelagos_mem[i].isles_list);
+ list_add_tail(&p_ooo_info->p_archipelagos_mem[i].list_entry,
+ &p_ooo_info->free_archipelagos_list);
+ }
+
+ p_ooo_info->ooo_history.p_cqes =
+ kcalloc(QED_MAX_NUM_OOO_HISTORY_ENTRIES,
+ sizeof(struct ooo_opaque),
+ GFP_KERNEL);
+ if (!p_ooo_info->ooo_history.p_cqes)
+ goto no_history_mem;
+
+ return p_ooo_info;
+
+no_history_mem:
+ kfree(p_ooo_info->p_archipelagos_mem);
+no_archipelagos_mem:
+ kfree(p_ooo_info->p_isles_mem);
+no_isles_mem:
+ kfree(p_ooo_info);
+ return NULL;
+}
+
+void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info, u32 cid)
+{
+ struct qed_ooo_archipelago *p_archipelago;
+ struct qed_ooo_buffer *p_buffer;
+ struct qed_ooo_isle *p_isle;
+ bool b_found = false;
+
+ if (list_empty(&p_ooo_info->archipelagos_list))
+ return;
+
+ list_for_each_entry(p_archipelago,
+ &p_ooo_info->archipelagos_list, list_entry) {
+ if (p_archipelago->cid == cid) {
+ list_del(&p_archipelago->list_entry);
+ b_found = true;
+ break;
+ }
+ }
+
+ if (!b_found)
+ return;
+
+ while (!list_empty(&p_archipelago->isles_list)) {
+ p_isle = list_first_entry(&p_archipelago->isles_list,
+ struct qed_ooo_isle, list_entry);
+
+ list_del(&p_isle->list_entry);
+
+ while (!list_empty(&p_isle->buffers_list)) {
+ p_buffer = list_first_entry(&p_isle->buffers_list,
+ struct qed_ooo_buffer,
+ list_entry);
+
+ if (!p_buffer)
+ break;
+
+ list_del(&p_buffer->list_entry);
+ list_add_tail(&p_buffer->list_entry,
+ &p_ooo_info->free_buffers_list);
+ }
+ list_add_tail(&p_isle->list_entry,
+ &p_ooo_info->free_isles_list);
+ }
+
+ list_add_tail(&p_archipelago->list_entry,
+ &p_ooo_info->free_archipelagos_list);
+}
+
+void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info)
+{
+ struct qed_ooo_archipelago *p_arch;
+ struct qed_ooo_buffer *p_buffer;
+ struct qed_ooo_isle *p_isle;
+
+ while (!list_empty(&p_ooo_info->archipelagos_list)) {
+ p_arch = list_first_entry(&p_ooo_info->archipelagos_list,
+ struct qed_ooo_archipelago,
+ list_entry);
+
+ list_del(&p_arch->list_entry);
+
+ while (!list_empty(&p_arch->isles_list)) {
+ p_isle = list_first_entry(&p_arch->isles_list,
+ struct qed_ooo_isle,
+ list_entry);
+
+ list_del(&p_isle->list_entry);
+
+ while (!list_empty(&p_isle->buffers_list)) {
+ p_buffer =
+ list_first_entry(&p_isle->buffers_list,
+ struct qed_ooo_buffer,
+ list_entry);
+
+ if (!p_buffer)
+ break;
+
+ list_del(&p_buffer->list_entry);
+ list_add_tail(&p_buffer->list_entry,
+ &p_ooo_info->free_buffers_list);
+ }
+ list_add_tail(&p_isle->list_entry,
+ &p_ooo_info->free_isles_list);
+ }
+ list_add_tail(&p_arch->list_entry,
+ &p_ooo_info->free_archipelagos_list);
+ }
+ if (!list_empty(&p_ooo_info->ready_buffers_list))
+ list_splice_tail_init(&p_ooo_info->ready_buffers_list,
+ &p_ooo_info->free_buffers_list);
+}
+
+void qed_ooo_setup(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info)
+{
+ qed_ooo_release_all_isles(p_hwfn, p_ooo_info);
+ memset(p_ooo_info->ooo_history.p_cqes, 0,
+ p_ooo_info->ooo_history.num_of_cqes *
+ sizeof(struct ooo_opaque));
+ p_ooo_info->ooo_history.head_idx = 0;
+}
+
+void qed_ooo_free(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info)
+{
+ struct qed_ooo_buffer *p_buffer;
+
+ qed_ooo_release_all_isles(p_hwfn, p_ooo_info);
+ while (!list_empty(&p_ooo_info->free_buffers_list)) {
+ p_buffer = list_first_entry(&p_ooo_info->free_buffers_list,
+ struct qed_ooo_buffer, list_entry);
+
+ if (!p_buffer)
+ break;
+
+ list_del(&p_buffer->list_entry);
+ 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);
+ }
+
+ kfree(p_ooo_info->p_isles_mem);
+ kfree(p_ooo_info->p_archipelagos_mem);
+ kfree(p_ooo_info->ooo_history.p_cqes);
+ kfree(p_ooo_info);
+}
+
+void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer)
+{
+ list_add_tail(&p_buffer->list_entry, &p_ooo_info->free_buffers_list);
+}
+
+struct qed_ooo_buffer *qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info)
+{
+ struct qed_ooo_buffer *p_buffer = NULL;
+
+ if (!list_empty(&p_ooo_info->free_buffers_list)) {
+ p_buffer = list_first_entry(&p_ooo_info->free_buffers_list,
+ struct qed_ooo_buffer, list_entry);
+
+ list_del(&p_buffer->list_entry);
+ }
+
+ return p_buffer;
+}
+
+void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer, u8 on_tail)
+{
+ if (on_tail)
+ list_add_tail(&p_buffer->list_entry,
+ &p_ooo_info->ready_buffers_list);
+ else
+ list_add(&p_buffer->list_entry,
+ &p_ooo_info->ready_buffers_list);
+}
+
+struct qed_ooo_buffer *qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info)
+{
+ struct qed_ooo_buffer *p_buffer = NULL;
+
+ if (!list_empty(&p_ooo_info->ready_buffers_list)) {
+ p_buffer = list_first_entry(&p_ooo_info->ready_buffers_list,
+ struct qed_ooo_buffer, list_entry);
+
+ list_del(&p_buffer->list_entry);
+ }
+
+ return p_buffer;
+}
+
+void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 drop_isle, u8 drop_size)
+{
+ struct qed_ooo_archipelago *p_archipelago = NULL;
+ struct qed_ooo_isle *p_isle = NULL;
+ u8 isle_idx;
+
+ p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
+ for (isle_idx = 0; isle_idx < drop_size; isle_idx++) {
+ p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, drop_isle);
+ if (!p_isle) {
+ DP_NOTICE(p_hwfn,
+ "Isle %d is not found(cid %d)\n",
+ drop_isle, cid);
+ return;
+ }
+ if (list_empty(&p_isle->buffers_list))
+ DP_NOTICE(p_hwfn,
+ "Isle %d is empty(cid %d)\n", drop_isle, cid);
+ else
+ list_splice_tail_init(&p_isle->buffers_list,
+ &p_ooo_info->free_buffers_list);
+
+ list_del(&p_isle->list_entry);
+ p_ooo_info->cur_isles_number--;
+ list_add(&p_isle->list_entry, &p_ooo_info->free_isles_list);
+ }
+
+ if (list_empty(&p_archipelago->isles_list)) {
+ list_del(&p_archipelago->list_entry);
+ list_add(&p_archipelago->list_entry,
+ &p_ooo_info->free_archipelagos_list);
+ }
+}
+
+void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 ooo_isle,
+ struct qed_ooo_buffer *p_buffer)
+{
+ struct qed_ooo_archipelago *p_archipelago = NULL;
+ struct qed_ooo_isle *p_prev_isle = NULL;
+ struct qed_ooo_isle *p_isle = NULL;
+
+ if (ooo_isle > 1) {
+ p_prev_isle = qed_ooo_seek_isle(p_hwfn,
+ p_ooo_info, cid, ooo_isle - 1);
+ if (!p_prev_isle) {
+ DP_NOTICE(p_hwfn,
+ "Isle %d is not found(cid %d)\n",
+ ooo_isle - 1, cid);
+ return;
+ }
+ }
+ p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
+ if (!p_archipelago && (ooo_isle != 1)) {
+ DP_NOTICE(p_hwfn,
+ "Connection %d is not found in OOO list\n", cid);
+ return;
+ }
+
+ if (!list_empty(&p_ooo_info->free_isles_list)) {
+ p_isle = list_first_entry(&p_ooo_info->free_isles_list,
+ struct qed_ooo_isle, list_entry);
+
+ list_del(&p_isle->list_entry);
+ if (!list_empty(&p_isle->buffers_list)) {
+ DP_NOTICE(p_hwfn, "Free isle is not empty\n");
+ INIT_LIST_HEAD(&p_isle->buffers_list);
+ }
+ } else {
+ DP_NOTICE(p_hwfn, "No more free isles\n");
+ return;
+ }
+
+ if (!p_archipelago &&
+ !list_empty(&p_ooo_info->free_archipelagos_list)) {
+ p_archipelago =
+ list_first_entry(&p_ooo_info->free_archipelagos_list,
+ struct qed_ooo_archipelago, list_entry);
+
+ list_del(&p_archipelago->list_entry);
+ if (!list_empty(&p_archipelago->isles_list)) {
+ DP_NOTICE(p_hwfn,
+ "Free OOO connection is not empty\n");
+ INIT_LIST_HEAD(&p_archipelago->isles_list);
+ }
+ p_archipelago->cid = cid;
+ list_add(&p_archipelago->list_entry,
+ &p_ooo_info->archipelagos_list);
+ } else if (!p_archipelago) {
+ DP_NOTICE(p_hwfn, "No more free OOO connections\n");
+ list_add(&p_isle->list_entry,
+ &p_ooo_info->free_isles_list);
+ list_add(&p_buffer->list_entry,
+ &p_ooo_info->free_buffers_list);
+ return;
+ }
+
+ list_add(&p_buffer->list_entry, &p_isle->buffers_list);
+ p_ooo_info->cur_isles_number++;
+ p_ooo_info->gen_isles_number++;
+
+ if (p_ooo_info->cur_isles_number > p_ooo_info->max_isles_number)
+ p_ooo_info->max_isles_number = p_ooo_info->cur_isles_number;
+
+ if (!p_prev_isle)
+ list_add(&p_isle->list_entry, &p_archipelago->isles_list);
+ else
+ list_add(&p_isle->list_entry, &p_prev_isle->list_entry);
+}
+
+void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid,
+ u8 ooo_isle,
+ struct qed_ooo_buffer *p_buffer, u8 buffer_side)
+{
+ struct qed_ooo_isle *p_isle = NULL;
+
+ p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, ooo_isle);
+ if (!p_isle) {
+ DP_NOTICE(p_hwfn,
+ "Isle %d is not found(cid %d)\n", ooo_isle, cid);
+ return;
+ }
+
+ if (buffer_side == QED_OOO_LEFT_BUF)
+ list_add(&p_buffer->list_entry, &p_isle->buffers_list);
+ else
+ list_add_tail(&p_buffer->list_entry, &p_isle->buffers_list);
+}
+
+void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info, u32 cid, u8 left_isle)
+{
+ struct qed_ooo_archipelago *p_archipelago = NULL;
+ struct qed_ooo_isle *p_right_isle = NULL;
+ struct qed_ooo_isle *p_left_isle = NULL;
+
+ p_right_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid,
+ left_isle + 1);
+ if (!p_right_isle) {
+ DP_NOTICE(p_hwfn,
+ "Right isle %d is not found(cid %d)\n",
+ left_isle + 1, cid);
+ return;
+ }
+
+ p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
+ list_del(&p_right_isle->list_entry);
+ p_ooo_info->cur_isles_number--;
+ if (left_isle) {
+ p_left_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid,
+ left_isle);
+ if (!p_left_isle) {
+ DP_NOTICE(p_hwfn,
+ "Left isle %d is not found(cid %d)\n",
+ left_isle, cid);
+ return;
+ }
+ list_splice_tail_init(&p_right_isle->buffers_list,
+ &p_left_isle->buffers_list);
+ } else {
+ list_splice_tail_init(&p_right_isle->buffers_list,
+ &p_ooo_info->ready_buffers_list);
+ if (list_empty(&p_archipelago->isles_list)) {
+ list_del(&p_archipelago->list_entry);
+ list_add(&p_archipelago->list_entry,
+ &p_ooo_info->free_archipelagos_list);
+ }
+ }
+ list_add_tail(&p_right_isle->list_entry, &p_ooo_info->free_isles_list);
+}
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ooo.h b/drivers/net/ethernet/qlogic/qed/qed_ooo.h
new file mode 100644
index 0000000..7a0670a
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_ooo.h
@@ -0,0 +1,176 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QED_OOO_H
+#define _QED_OOO_H
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include "qed.h"
+
+#define QED_MAX_NUM_ISLES 256
+#define QED_MAX_NUM_OOO_HISTORY_ENTRIES 512
+
+#define QED_OOO_LEFT_BUF 0
+#define QED_OOO_RIGHT_BUF 1
+
+struct qed_ooo_buffer {
+ struct list_head list_entry;
+ void *rx_buffer_virt_addr;
+ dma_addr_t rx_buffer_phys_addr;
+ u32 rx_buffer_size;
+ u16 packet_length;
+ u16 parse_flags;
+ u16 vlan;
+ u8 placement_offset;
+};
+
+struct qed_ooo_isle {
+ struct list_head list_entry;
+ struct list_head buffers_list;
+};
+
+struct qed_ooo_archipelago {
+ struct list_head list_entry;
+ struct list_head isles_list;
+ u32 cid;
+};
+
+struct qed_ooo_history {
+ struct ooo_opaque *p_cqes;
+ u32 head_idx;
+ u32 num_of_cqes;
+};
+
+struct qed_ooo_info {
+ struct list_head free_buffers_list;
+ struct list_head ready_buffers_list;
+ struct list_head free_isles_list;
+ struct list_head free_archipelagos_list;
+ struct list_head archipelagos_list;
+ struct qed_ooo_archipelago *p_archipelagos_mem;
+ struct qed_ooo_isle *p_isles_mem;
+ struct qed_ooo_history ooo_history;
+ u32 cur_isles_number;
+ u32 max_isles_number;
+ u32 gen_isles_number;
+};
+
+#if IS_ENABLED(CONFIG_QED_ISCSI)
+void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct ooo_opaque *p_cqe);
+
+struct qed_ooo_info *qed_ooo_alloc(struct qed_hwfn *p_hwfn);
+
+void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid);
+
+void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info);
+
+void qed_ooo_setup(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
+
+void qed_ooo_free(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
+
+void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer);
+
+struct qed_ooo_buffer *
+qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info);
+
+void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer, u8 on_tail);
+
+struct qed_ooo_buffer *
+qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info);
+
+void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 drop_isle, u8 drop_size);
+
+void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid,
+ u8 ooo_isle, struct qed_ooo_buffer *p_buffer);
+
+void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid,
+ u8 ooo_isle,
+ struct qed_ooo_buffer *p_buffer, u8 buffer_side);
+
+void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info, u32 cid,
+ u8 left_isle);
+#else /* IS_ENABLED(CONFIG_QED_ISCSI) */
+static inline void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct ooo_opaque *p_cqe) {}
+
+static inline struct qed_ooo_info *qed_ooo_alloc(
+ struct qed_hwfn *p_hwfn) { return NULL; }
+
+static inline void
+qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid) {}
+
+static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info)
+ {}
+
+static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info) {}
+
+static inline void qed_ooo_free(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info) {}
+
+static inline void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer) {}
+
+static inline struct qed_ooo_buffer *
+qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info) { return NULL; }
+
+static inline void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ struct qed_ooo_buffer *p_buffer,
+ u8 on_tail) {}
+
+static inline struct qed_ooo_buffer *
+qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info) { return NULL; }
+
+static inline void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 drop_isle, u8 drop_size) {}
+
+static inline void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 ooo_isle,
+ struct qed_ooo_buffer *p_buffer) {}
+
+static inline void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info,
+ u32 cid, u8 ooo_isle,
+ struct qed_ooo_buffer *p_buffer,
+ u8 buffer_side) {}
+
+static inline void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
+ struct qed_ooo_info *p_ooo_info, u32 cid,
+ u8 left_isle) {}
+#endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
+
+#endif
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index 6a353ff..2a16547 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -2771,6 +2771,7 @@ static int qed_roce_ll2_tx(struct qed_dev *cdev,
/* 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);
if (rc) {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c
index 56d2f64..f022469 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_spq.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c
@@ -26,6 +26,7 @@
#include "qed_int.h"
#include "qed_iscsi.h"
#include "qed_mcp.h"
+#include "qed_ooo.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_sriov.h"
@@ -281,6 +282,14 @@ static int qed_spq_hw_post(struct qed_hwfn *p_hwfn,
case PROTOCOLID_ISCSI:
if (!IS_ENABLED(CONFIG_QED_ISCSI))
return -EINVAL;
+ if (p_eqe->opcode == ISCSI_EVENT_TYPE_ASYN_DELETE_OOO_ISLES) {
+ u32 cid = le32_to_cpu(p_eqe->data.iscsi_info.cid);
+
+ qed_ooo_release_connection_isles(p_hwfn,
+ p_hwfn->p_ooo_info,
+ cid);
+ return 0;
+ }
if (p_hwfn->p_iscsi_info->event_cb) {
struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
--
1.8.3.1
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