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Message-Id: <1486725593-9872-10-git-send-email-selvin.xavier@broadcom.com>
Date: Fri, 10 Feb 2017 03:19:41 -0800
From: Selvin Xavier <selvin.xavier@...adcom.com>
To: dledford@...hat.com, linux-rdma@...r.kernel.org
Cc: netdev@...r.kernel.org, Selvin Xavier <selvin.xavier@...adcom.com>,
Eddie Wai <eddie.wai@...adcom.com>,
Devesh Sharma <devesh.sharma@...adcom.com>,
Somnath Kotur <somnath.kotur@...adcom.com>,
Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>
Subject: [PATCH V5 for-next 09/21] RDMA/bnxt_re: Support for GID related verbs
Implements add GID, del GID, get_netdev and pkey related verbs.
v3: Fixes some sparse warning related to endianness check. Removes
macros which are just wrapper for standard defines.
Signed-off-by: Eddie Wai <eddie.wai@...adcom.com>
Signed-off-by: Devesh Sharma <devesh.sharma@...adcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@...adcom.com>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@...adcom.com>
---
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 123 +++++++++++++++++
drivers/infiniband/hw/bnxt_re/ib_verbs.h | 18 +++
drivers/infiniband/hw/bnxt_re/main.c | 7 +
drivers/infiniband/hw/bnxt_re/qplib_res.c | 5 +
drivers/infiniband/hw/bnxt_re/qplib_res.h | 3 +
drivers/infiniband/hw/bnxt_re/qplib_sp.c | 218 ++++++++++++++++++++++++++++++
drivers/infiniband/hw/bnxt_re/qplib_sp.h | 11 ++
7 files changed, 385 insertions(+)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 41d9534..1c9e1f4 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -60,6 +60,22 @@
#include "ib_verbs.h"
#include <rdma/bnxt_re-abi.h>
+/* Device */
+struct net_device *bnxt_re_get_netdev(struct ib_device *ibdev, u8 port_num)
+{
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+ struct net_device *netdev = NULL;
+
+ rcu_read_lock();
+ if (rdev)
+ netdev = rdev->netdev;
+ if (netdev)
+ dev_hold(netdev);
+
+ rcu_read_unlock();
+ return netdev;
+}
+
int bnxt_re_query_device(struct ib_device *ibdev,
struct ib_device_attr *ib_attr,
struct ib_udata *udata)
@@ -272,6 +288,113 @@ int bnxt_re_get_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}
+
+int bnxt_re_query_pkey(struct ib_device *ibdev, u8 port_num,
+ u16 index, u16 *pkey)
+{
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+
+ /* Ignore port_num */
+
+ memset(pkey, 0, sizeof(*pkey));
+ return bnxt_qplib_get_pkey(&rdev->qplib_res,
+ &rdev->qplib_res.pkey_tbl, index, pkey);
+}
+
+int bnxt_re_query_gid(struct ib_device *ibdev, u8 port_num,
+ int index, union ib_gid *gid)
+{
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+ int rc = 0;
+
+ /* Ignore port_num */
+ memset(gid, 0, sizeof(*gid));
+ rc = bnxt_qplib_get_sgid(&rdev->qplib_res,
+ &rdev->qplib_res.sgid_tbl, index,
+ (struct bnxt_qplib_gid *)gid);
+ return rc;
+}
+
+int bnxt_re_del_gid(struct ib_device *ibdev, u8 port_num,
+ unsigned int index, void **context)
+{
+ int rc = 0;
+ struct bnxt_re_gid_ctx *ctx, **ctx_tbl;
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+ struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
+
+ /* Delete the entry from the hardware */
+ ctx = *context;
+ if (!ctx)
+ return -EINVAL;
+
+ if (sgid_tbl && sgid_tbl->active) {
+ if (ctx->idx >= sgid_tbl->max)
+ return -EINVAL;
+ ctx->refcnt--;
+ if (!ctx->refcnt) {
+ rc = bnxt_qplib_del_sgid
+ (sgid_tbl,
+ &sgid_tbl->tbl[ctx->idx], true);
+ if (rc)
+ dev_err(rdev_to_dev(rdev),
+ "Failed to remove GID: %#x", rc);
+ ctx_tbl = sgid_tbl->ctx;
+ ctx_tbl[ctx->idx] = NULL;
+ kfree(ctx);
+ }
+ } else {
+ return -EINVAL;
+ }
+ return rc;
+}
+
+int bnxt_re_add_gid(struct ib_device *ibdev, u8 port_num,
+ unsigned int index, const union ib_gid *gid,
+ const struct ib_gid_attr *attr, void **context)
+{
+ int rc;
+ u32 tbl_idx = 0;
+ u16 vlan_id = 0xFFFF;
+ struct bnxt_re_gid_ctx *ctx, **ctx_tbl;
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+ struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
+
+ if ((attr->ndev) && is_vlan_dev(attr->ndev))
+ vlan_id = vlan_dev_vlan_id(attr->ndev);
+
+ rc = bnxt_qplib_add_sgid(sgid_tbl, (struct bnxt_qplib_gid *)gid,
+ rdev->qplib_res.netdev->dev_addr,
+ vlan_id, true, &tbl_idx);
+ if (rc == -EALREADY) {
+ ctx_tbl = sgid_tbl->ctx;
+ ctx_tbl[tbl_idx]->refcnt++;
+ *context = ctx_tbl[tbl_idx];
+ return 0;
+ }
+
+ if (rc < 0) {
+ dev_err(rdev_to_dev(rdev), "Failed to add GID: %#x", rc);
+ return rc;
+ }
+
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ ctx_tbl = sgid_tbl->ctx;
+ ctx->idx = tbl_idx;
+ ctx->refcnt = 1;
+ ctx_tbl[tbl_idx] = ctx;
+
+ return rc;
+}
+
+enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev,
+ u8 port_num)
+{
+ return IB_LINK_LAYER_ETHERNET;
+}
+
/* Protection Domains */
int bnxt_re_dealloc_pd(struct ib_pd *ib_pd)
{
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.h b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
index 458b887..144a48b 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.h
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
@@ -39,6 +39,11 @@
#ifndef __BNXT_RE_IB_VERBS_H__
#define __BNXT_RE_IB_VERBS_H__
+struct bnxt_re_gid_ctx {
+ u32 idx;
+ u32 refcnt;
+};
+
struct bnxt_re_pd {
struct bnxt_re_dev *rdev;
struct ib_pd ib_pd;
@@ -54,6 +59,8 @@ struct bnxt_re_ucontext {
spinlock_t sh_lock; /* protect shpg */
};
+struct net_device *bnxt_re_get_netdev(struct ib_device *ibdev, u8 port_num);
+
int bnxt_re_query_device(struct ib_device *ibdev,
struct ib_device_attr *ib_attr,
struct ib_udata *udata);
@@ -67,6 +74,17 @@ int bnxt_re_modify_port(struct ib_device *ibdev, u8 port_num,
struct ib_port_modify *port_modify);
int bnxt_re_get_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable);
+int bnxt_re_query_pkey(struct ib_device *ibdev, u8 port_num,
+ u16 index, u16 *pkey);
+int bnxt_re_del_gid(struct ib_device *ibdev, u8 port_num,
+ unsigned int index, void **context);
+int bnxt_re_add_gid(struct ib_device *ibdev, u8 port_num,
+ unsigned int index, const union ib_gid *gid,
+ const struct ib_gid_attr *attr, void **context);
+int bnxt_re_query_gid(struct ib_device *ibdev, u8 port_num,
+ int index, union ib_gid *gid);
+enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev,
+ u8 port_num);
struct ib_pd *bnxt_re_alloc_pd(struct ib_device *ibdev,
struct ib_ucontext *context,
struct ib_udata *udata);
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 847aa3f..0071831 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -438,6 +438,13 @@ static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
ibdev->query_port = bnxt_re_query_port;
ibdev->modify_port = bnxt_re_modify_port;
ibdev->get_port_immutable = bnxt_re_get_port_immutable;
+ ibdev->query_pkey = bnxt_re_query_pkey;
+ ibdev->query_gid = bnxt_re_query_gid;
+ ibdev->get_netdev = bnxt_re_get_netdev;
+ ibdev->add_gid = bnxt_re_add_gid;
+ ibdev->del_gid = bnxt_re_del_gid;
+ ibdev->get_link_layer = bnxt_re_get_link_layer;
+
ibdev->alloc_pd = bnxt_re_alloc_pd;
ibdev->dealloc_pd = bnxt_re_dealloc_pd;
ibdev->alloc_ucontext = bnxt_re_alloc_ucontext;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.c b/drivers/infiniband/hw/bnxt_re/qplib_res.c
index d91a034..62447b3 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.c
@@ -507,6 +507,11 @@ static void bnxt_qplib_cleanup_sgid_tbl(struct bnxt_qplib_res *res,
{
int i;
+ for (i = 0; i < sgid_tbl->max; i++) {
+ if (memcmp(&sgid_tbl->tbl[i], &bnxt_qplib_gid_zero,
+ sizeof(bnxt_qplib_gid_zero)))
+ bnxt_qplib_del_sgid(sgid_tbl, &sgid_tbl->tbl[i], true);
+ }
memset(sgid_tbl->tbl, 0, sizeof(struct bnxt_qplib_gid) * sgid_tbl->max);
memset(sgid_tbl->hw_id, -1, sizeof(u16) * sgid_tbl->max);
sgid_tbl->active = 0;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index 4323953..6277d80 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -186,6 +186,9 @@ struct bnxt_qplib_res {
struct bnxt_qplib_dpi_tbl dpi_tbl;
};
+#define to_bnxt_qplib(ptr, type, member) \
+ container_of(ptr, type, member)
+
struct bnxt_qplib_pd;
struct bnxt_qplib_dev_attr;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index 0578420..ba16f6b 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
@@ -46,6 +46,10 @@
#include "qplib_res.h"
#include "qplib_rcfw.h"
#include "qplib_sp.h"
+
+const struct bnxt_qplib_gid bnxt_qplib_gid_zero = {{ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0 } };
+
/* Device */
int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
struct bnxt_qplib_dev_attr *attr)
@@ -129,6 +133,220 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
return 0;
}
+/* SGID */
+int bnxt_qplib_get_sgid(struct bnxt_qplib_res *res,
+ struct bnxt_qplib_sgid_tbl *sgid_tbl, int index,
+ struct bnxt_qplib_gid *gid)
+{
+ if (index > sgid_tbl->max) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: Index %d exceeded SGID table max (%d)",
+ index, sgid_tbl->max);
+ return -EINVAL;
+ }
+ memcpy(gid, &sgid_tbl->tbl[index], sizeof(*gid));
+ return 0;
+}
+
+int bnxt_qplib_del_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
+ struct bnxt_qplib_gid *gid, bool update)
+{
+ struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
+ struct bnxt_qplib_res,
+ sgid_tbl);
+ struct bnxt_qplib_rcfw *rcfw = res->rcfw;
+ int index;
+
+ if (!sgid_tbl) {
+ dev_err(&res->pdev->dev, "QPLIB: SGID table not allocated");
+ return -EINVAL;
+ }
+ /* Do we need a sgid_lock here? */
+ if (!sgid_tbl->active) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: SGID table has no active entries");
+ return -ENOMEM;
+ }
+ for (index = 0; index < sgid_tbl->max; index++) {
+ if (!memcmp(&sgid_tbl->tbl[index], gid, sizeof(*gid)))
+ break;
+ }
+ if (index == sgid_tbl->max) {
+ dev_warn(&res->pdev->dev, "GID not found in the SGID table");
+ return 0;
+ }
+ /* Remove GID from the SGID table */
+ if (update) {
+ struct cmdq_delete_gid req;
+ struct creq_delete_gid_resp *resp;
+ u16 cmd_flags = 0;
+
+ RCFW_CMD_PREP(req, DELETE_GID, cmd_flags);
+ if (sgid_tbl->hw_id[index] == 0xFFFF) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: GID entry contains an invalid HW id");
+ return -EINVAL;
+ }
+ req.gid_index = cpu_to_le16(sgid_tbl->hw_id[index]);
+ resp = (struct creq_delete_gid_resp *)
+ bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, NULL,
+ 0);
+ if (!resp) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: SP: DELETE_GID send failed");
+ return -EINVAL;
+ }
+ if (!bnxt_qplib_rcfw_wait_for_resp(rcfw,
+ le16_to_cpu(req.cookie))) {
+ /* Cmd timed out */
+ dev_err(&res->pdev->dev,
+ "QPLIB: SP: DELETE_GID timed out");
+ return -ETIMEDOUT;
+ }
+ if (resp->status ||
+ le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: SP: DELETE_GID failed ");
+ dev_err(&res->pdev->dev,
+ "QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
+ resp->status, le16_to_cpu(req.cookie),
+ le16_to_cpu(resp->cookie));
+ return -EINVAL;
+ }
+ }
+ memcpy(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
+ sizeof(bnxt_qplib_gid_zero));
+ sgid_tbl->active--;
+ dev_dbg(&res->pdev->dev,
+ "QPLIB: SGID deleted hw_id[0x%x] = 0x%x active = 0x%x",
+ index, sgid_tbl->hw_id[index], sgid_tbl->active);
+ sgid_tbl->hw_id[index] = (u16)-1;
+
+ /* unlock */
+ return 0;
+}
+
+int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
+ struct bnxt_qplib_gid *gid, u8 *smac, u16 vlan_id,
+ bool update, u32 *index)
+{
+ struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
+ struct bnxt_qplib_res,
+ sgid_tbl);
+ struct bnxt_qplib_rcfw *rcfw = res->rcfw;
+ int i, free_idx, rc = 0;
+
+ if (!sgid_tbl) {
+ dev_err(&res->pdev->dev, "QPLIB: SGID table not allocated");
+ return -EINVAL;
+ }
+ /* Do we need a sgid_lock here? */
+ if (sgid_tbl->active == sgid_tbl->max) {
+ dev_err(&res->pdev->dev, "QPLIB: SGID table is full");
+ return -ENOMEM;
+ }
+ free_idx = sgid_tbl->max;
+ for (i = 0; i < sgid_tbl->max; i++) {
+ if (!memcmp(&sgid_tbl->tbl[i], gid, sizeof(*gid))) {
+ dev_dbg(&res->pdev->dev,
+ "QPLIB: SGID entry already exist in entry %d!",
+ i);
+ *index = i;
+ return -EALREADY;
+ } else if (!memcmp(&sgid_tbl->tbl[i], &bnxt_qplib_gid_zero,
+ sizeof(bnxt_qplib_gid_zero)) &&
+ free_idx == sgid_tbl->max) {
+ free_idx = i;
+ }
+ }
+ if (free_idx == sgid_tbl->max) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: SGID table is FULL but count is not MAX??");
+ return -ENOMEM;
+ }
+ if (update) {
+ struct cmdq_add_gid req;
+ struct creq_add_gid_resp *resp;
+ u16 cmd_flags = 0;
+ u32 temp32[4];
+ u16 temp16[3];
+
+ RCFW_CMD_PREP(req, ADD_GID, cmd_flags);
+
+ memcpy(temp32, gid->data, sizeof(struct bnxt_qplib_gid));
+ req.gid[0] = cpu_to_be32(temp32[3]);
+ req.gid[1] = cpu_to_be32(temp32[2]);
+ req.gid[2] = cpu_to_be32(temp32[1]);
+ req.gid[3] = cpu_to_be32(temp32[0]);
+ if (vlan_id != 0xFFFF)
+ req.vlan = cpu_to_le16((vlan_id &
+ CMDQ_ADD_GID_VLAN_VLAN_ID_MASK) |
+ CMDQ_ADD_GID_VLAN_TPID_TPID_8100 |
+ CMDQ_ADD_GID_VLAN_VLAN_EN);
+
+ /* MAC in network format */
+ memcpy(temp16, smac, 6);
+ req.src_mac[0] = cpu_to_be16(temp16[0]);
+ req.src_mac[1] = cpu_to_be16(temp16[1]);
+ req.src_mac[2] = cpu_to_be16(temp16[2]);
+
+ resp = (struct creq_add_gid_resp *)
+ bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
+ NULL, 0);
+ if (!resp) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: SP: ADD_GID send failed");
+ return -EINVAL;
+ }
+ if (!bnxt_qplib_rcfw_wait_for_resp(rcfw,
+ le16_to_cpu(req.cookie))) {
+ /* Cmd timed out */
+ dev_err(&res->pdev->dev,
+ "QPIB: SP: ADD_GID timed out");
+ return -ETIMEDOUT;
+ }
+ if (resp->status ||
+ le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
+ dev_err(&res->pdev->dev, "QPLIB: SP: ADD_GID failed ");
+ dev_err(&res->pdev->dev,
+ "QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
+ resp->status, le16_to_cpu(req.cookie),
+ le16_to_cpu(resp->cookie));
+ return -EINVAL;
+ }
+ sgid_tbl->hw_id[free_idx] = le32_to_cpu(resp->xid);
+ }
+ /* Add GID to the sgid_tbl */
+ memcpy(&sgid_tbl->tbl[free_idx], gid, sizeof(*gid));
+ sgid_tbl->active++;
+ dev_dbg(&res->pdev->dev,
+ "QPLIB: SGID added hw_id[0x%x] = 0x%x active = 0x%x",
+ free_idx, sgid_tbl->hw_id[free_idx], sgid_tbl->active);
+
+ *index = free_idx;
+ /* unlock */
+ return rc;
+}
+
+/* pkeys */
+int bnxt_qplib_get_pkey(struct bnxt_qplib_res *res,
+ struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 index,
+ u16 *pkey)
+{
+ if (index == 0xFFFF) {
+ *pkey = 0xFFFF;
+ return 0;
+ }
+ if (index > pkey_tbl->max) {
+ dev_err(&res->pdev->dev,
+ "QPLIB: Index %d exceeded PKEY table max (%d)",
+ index, pkey_tbl->max);
+ return -EINVAL;
+ }
+ memcpy(pkey, &pkey_tbl->tbl[index], sizeof(*pkey));
+ return 0;
+}
+
int bnxt_qplib_del_pkey(struct bnxt_qplib_res *res,
struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 *pkey,
bool update)
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
index f7584c5..a3d4aab 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
@@ -78,6 +78,17 @@ struct bnxt_qplib_gid {
u8 data[16];
};
+int bnxt_qplib_get_sgid(struct bnxt_qplib_res *res,
+ struct bnxt_qplib_sgid_tbl *sgid_tbl, int index,
+ struct bnxt_qplib_gid *gid);
+int bnxt_qplib_del_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
+ struct bnxt_qplib_gid *gid, bool update);
+int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
+ struct bnxt_qplib_gid *gid, u8 *mac, u16 vlan_id,
+ bool update, u32 *index);
+int bnxt_qplib_get_pkey(struct bnxt_qplib_res *res,
+ struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 index,
+ u16 *pkey);
int bnxt_qplib_del_pkey(struct bnxt_qplib_res *res,
struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 *pkey,
bool update);
--
2.5.5
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