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RDMA/bnxt_re: Add support for mirror vnic

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Added below support:
- Querying the pre-reserved mirror_vnic_id
- Allocating/freeing mirror_vnic
- Configuring mirror vnic to associate it with raw qp

These functions will be used in the subsequent patch in this series.

Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Link: https://patch.msgid.link/20250822040801.776196-7-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Saravanan Vajravel 2025-08-22 09:37:57 +05:30 committed by Leon Romanovsky
parent af7f9d0d57
commit fd6c9ae7c1
2 changed files with 71 additions and 0 deletions
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4
drivers/infiniband/hw/bnxt_re/bnxt_re.h
View File

@ -248,6 +248,10 @@ int bnxt_re_assign_pma_port_counters(struct bnxt_re_dev *rdev, struct ib_mad *ou
int bnxt_re_assign_pma_port_ext_counters(struct bnxt_re_dev *rdev,
struct ib_mad *out_mad);
void bnxt_re_hwrm_free_vnic(struct bnxt_re_dev *rdev);
int bnxt_re_hwrm_alloc_vnic(struct bnxt_re_dev *rdev);
int bnxt_re_hwrm_cfg_vnic(struct bnxt_re_dev *rdev, u32 qp_id);
static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
{
if (rdev)

67
drivers/infiniband/hw/bnxt_re/main.c
View File

@ -540,6 +540,72 @@ static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
fw_msg->timeout = timeout;
}
void bnxt_re_hwrm_free_vnic(struct bnxt_re_dev *rdev)
{
struct bnxt_en_dev *en_dev = rdev->en_dev;
struct hwrm_vnic_free_input req = {};
struct bnxt_fw_msg fw_msg = {};
int rc;
bnxt_re_init_hwrm_hdr((void *)&req, HWRM_VNIC_FREE);
req.vnic_id = cpu_to_le32(rdev->mirror_vnic_id);
bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), NULL,
0, DFLT_HWRM_CMD_TIMEOUT);
rc = bnxt_send_msg(en_dev, &fw_msg);
if (rc)
ibdev_dbg(&rdev->ibdev,
"Failed to free vnic, rc = %d\n", rc);
}
int bnxt_re_hwrm_alloc_vnic(struct bnxt_re_dev *rdev)
{
struct bnxt_en_dev *en_dev = rdev->en_dev;
struct hwrm_vnic_alloc_output resp = {};
struct hwrm_vnic_alloc_input req = {};
struct bnxt_fw_msg fw_msg = {};
int rc;
bnxt_re_init_hwrm_hdr((void *)&req, HWRM_VNIC_ALLOC);
req.vnic_id = cpu_to_le16(rdev->mirror_vnic_id);
req.flags = cpu_to_le32(VNIC_ALLOC_REQ_FLAGS_VNIC_ID_VALID);
bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
rc = bnxt_send_msg(en_dev, &fw_msg);
if (rc)
ibdev_dbg(&rdev->ibdev,
"Failed to alloc vnic, rc = %d\n", rc);
return rc;
}
int bnxt_re_hwrm_cfg_vnic(struct bnxt_re_dev *rdev, u32 qp_id)
{
struct bnxt_en_dev *en_dev = rdev->en_dev;
struct hwrm_vnic_cfg_input req = {};
struct bnxt_fw_msg fw_msg = {};
int rc;
bnxt_re_init_hwrm_hdr((void *)&req, HWRM_VNIC_CFG);
req.flags = cpu_to_le32(VNIC_CFG_REQ_FLAGS_ROCE_ONLY_VNIC_MODE);
req.enables = cpu_to_le32(VNIC_CFG_REQ_ENABLES_RAW_QP_ID |
VNIC_CFG_REQ_ENABLES_MRU);
req.vnic_id = cpu_to_le16(rdev->mirror_vnic_id);
req.raw_qp_id = cpu_to_le32(qp_id);
req.mru = cpu_to_le16(rdev->netdev->mtu + VLAN_ETH_HLEN);
bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), NULL,
0, DFLT_HWRM_CMD_TIMEOUT);
rc = bnxt_send_msg(en_dev, &fw_msg);
if (rc)
ibdev_dbg(&rdev->ibdev,
"Failed to cfg vnic, rc = %d\n", rc);
return rc;
}
/* Query device config using common hwrm */
static int bnxt_re_hwrm_qcfg(struct bnxt_re_dev *rdev, u32 *db_len,
u32 *offset)
@ -558,6 +624,7 @@ static int bnxt_re_hwrm_qcfg(struct bnxt_re_dev *rdev, u32 *db_len,
if (!rc) {
*db_len = PAGE_ALIGN(le16_to_cpu(resp.l2_doorbell_bar_size_kb) * 1024);
*offset = PAGE_ALIGN(le16_to_cpu(resp.legacy_l2_db_size_kb) * 1024);
rdev->mirror_vnic_id = le16_to_cpu(resp.mirror_vnic_id);
}
return rc;
}