[PATCH] RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing

longli
2023-05-05T18:52:15Z

From: Long Li <longli@microsoft.com>

With RX coalescing, one CQE entry can be used to indicate multiple packets
on the receive queue. This saves processing time and PCI bandwidth over
the CQ.

Signed-off-by: Long Li <longli@microsoft.com>
---
drivers/infiniband/hw/mana/qp.c | 5 ++++-
include/net/mana/mana.h | 17 +++++++++++++++++
2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index 54b61930a7fd..83c768f96506 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -13,7 +13,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
u8 *rx_hash_key)
{
struct mana_port_context *mpc = netdev_priv(ndev);
- struct mana_cfg_rx_steer_req *req = NULL;
+ struct mana_cfg_rx_steer_req_v2 *req = NULL;
struct mana_cfg_rx_steer_resp resp = {};
mana_handle_t *req_indir_tab;
struct gdma_context *gc;
@@ -33,6 +33,8 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size,
sizeof(resp));

+ req->hdr.req.msg_version = GDMA_MESSAGE_V2;
+
req->vport = mpc->port_handle;
req->rx_enable = 1;
req->update_default_rxobj = 1;
@@ -46,6 +48,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
req->num_indir_entries = MANA_INDIRECT_TABLE_SIZE;
req->indir_tab_offset = sizeof(*req);
req->update_indir_tab = true;
+ req->cqe_coalescing_enable = true;

req_indir_tab = (mana_handle_t *)(req + 1);
/* The ind table passed to the hardware must have
diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h
index cd386aa7c7cc..f8314b7c386c 100644
--- a/include/net/mana/mana.h
+++ b/include/net/mana/mana.h
@@ -596,6 +596,23 @@ struct mana_cfg_rx_steer_req {
u8 hashkey[MANA_HASH_KEY_SIZE];
}; /* HW DATA */

+struct mana_cfg_rx_steer_req_v2 {
+ struct gdma_req_hdr hdr;
+ mana_handle_t vport;
+ u16 num_indir_entries;
+ u16 indir_tab_offset;
+ u32 rx_enable;
+ u32 rss_enable;
+ u8 update_default_rxobj;
+ u8 update_hashkey;
+ u8 update_indir_tab;
+ u8 reserved;
+ mana_handle_t default_rxobj;
+ u8 hashkey[MANA_HASH_KEY_SIZE];
+ u8 cqe_coalescing_enable;
+ u8 reserved2[7];
+}; /* HW DATA */
+
struct mana_cfg_rx_steer_resp {
struct gdma_resp_hdr hdr;
}; /* HW DATA */
--
2.17.1