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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-17 20:18:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-17 20:18:18 +0200
commita1e16bc7d5f7ca3599d8a7f061841c93a563665e (patch)
tree73e557536e5dc52894e0e24439406db3510c5434 /drivers/infiniband/ulp
parentMerge tag 'i3c/for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c... (diff)
parentRDMA/ucma: Fix use after free in destroy id flow (diff)
downloadlinux-a1e16bc7d5f7ca3599d8a7f061841c93a563665e.tar.xz
linux-a1e16bc7d5f7ca3599d8a7f061841c93a563665e.zip
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe: "A usual cycle for RDMA with a typical mix of driver and core subsystem updates: - Driver minor changes and bug fixes for mlx5, efa, rxe, vmw_pvrdma, hns, usnic, qib, qedr, cxgb4, hns, bnxt_re - Various rtrs fixes and updates - Bug fix for mlx4 CM emulation for virtualization scenarios where MRA wasn't working right - Use tracepoints instead of pr_debug in the CM code - Scrub the locking in ucma and cma to close more syzkaller bugs - Use tasklet_setup in the subsystem - Revert the idea that 'destroy' operations are not allowed to fail at the driver level. This proved unworkable from a HW perspective. - Revise how the umem API works so drivers make fewer mistakes using it - XRC support for qedr - Convert uverbs objects RWQ and MW to new the allocation scheme - Large queue entry sizes for hns - Use hmm_range_fault() for mlx5 On Demand Paging - uverbs APIs to inspect the GID table instead of sysfs - Move some of the RDMA code for building large page SGLs into lib/scatterlist" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (191 commits) RDMA/ucma: Fix use after free in destroy id flow RDMA/rxe: Handle skb_clone() failure in rxe_recv.c RDMA/rxe: Move the definitions for rxe_av.network_type to uAPI RDMA: Explicitly pass in the dma_device to ib_register_device lib/scatterlist: Do not limit max_segment to PAGE_ALIGNED values IB/mlx4: Convert rej_tmout radix-tree to XArray RDMA/rxe: Fix bug rejecting all multicast packets RDMA/rxe: Fix skb lifetime in rxe_rcv_mcast_pkt() RDMA/rxe: Remove duplicate entries in struct rxe_mr IB/hfi,rdmavt,qib,opa_vnic: Update MAINTAINERS IB/rdmavt: Fix sizeof mismatch MAINTAINERS: CISCO VIC LOW LATENCY NIC DRIVER RDMA/bnxt_re: Fix sizeof mismatch for allocation of pbl_tbl. RDMA/bnxt_re: Use rdma_umem_for_each_dma_block() RDMA/umem: Move to allocate SG table from pages lib/scatterlist: Add support in dynamic allocation of SG table from pages tools/testing/scatterlist: Show errors in human readable form tools/testing/scatterlist: Rejuvenate bit-rotten test RDMA/ipoib: Set rtnl_link_ops for ipoib interfaces RDMA/uverbs: Expose the new GID query API to user space ...
Diffstat (limited to 'drivers/infiniband/ulp')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_cm.c6
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_fs.c50
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c2
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_netlink.c11
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_vlan.c2
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c15
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c6
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-pri.h1
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c4
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-srv.c76
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-srv.h7
11 files changed, 108 insertions, 72 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 7c41fb040f7c..8f0b598a46ec 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1647,17 +1647,13 @@ int ipoib_cm_dev_init(struct net_device *dev)
void ipoib_cm_dev_cleanup(struct net_device *dev)
{
struct ipoib_dev_priv *priv = ipoib_priv(dev);
- int ret;
if (!priv->cm.srq)
return;
ipoib_dbg(priv, "Cleanup ipoib connected mode.\n");
- ret = ib_destroy_srq(priv->cm.srq);
- if (ret)
- ipoib_warn(priv, "ib_destroy_srq failed: %d\n", ret);
-
+ ib_destroy_srq(priv->cm.srq);
priv->cm.srq = NULL;
if (!priv->cm.srq_ring)
return;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_fs.c b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
index 64c19f6fa931..12ba7a0fe0b5 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_fs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
@@ -124,35 +124,14 @@ static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
return 0;
}
-static const struct seq_operations ipoib_mcg_seq_ops = {
+static const struct seq_operations ipoib_mcg_sops = {
.start = ipoib_mcg_seq_start,
.next = ipoib_mcg_seq_next,
.stop = ipoib_mcg_seq_stop,
.show = ipoib_mcg_seq_show,
};
-static int ipoib_mcg_open(struct inode *inode, struct file *file)
-{
- struct seq_file *seq;
- int ret;
-
- ret = seq_open(file, &ipoib_mcg_seq_ops);
- if (ret)
- return ret;
-
- seq = file->private_data;
- seq->private = inode->i_private;
-
- return 0;
-}
-
-static const struct file_operations ipoib_mcg_fops = {
- .owner = THIS_MODULE,
- .open = ipoib_mcg_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
+DEFINE_SEQ_ATTRIBUTE(ipoib_mcg);
static void *ipoib_path_seq_start(struct seq_file *file, loff_t *pos)
{
@@ -229,35 +208,14 @@ static int ipoib_path_seq_show(struct seq_file *file, void *iter_ptr)
return 0;
}
-static const struct seq_operations ipoib_path_seq_ops = {
+static const struct seq_operations ipoib_path_sops = {
.start = ipoib_path_seq_start,
.next = ipoib_path_seq_next,
.stop = ipoib_path_seq_stop,
.show = ipoib_path_seq_show,
};
-static int ipoib_path_open(struct inode *inode, struct file *file)
-{
- struct seq_file *seq;
- int ret;
-
- ret = seq_open(file, &ipoib_path_seq_ops);
- if (ret)
- return ret;
-
- seq = file->private_data;
- seq->private = inode->i_private;
-
- return 0;
-}
-
-static const struct file_operations ipoib_path_fops = {
- .owner = THIS_MODULE,
- .open = ipoib_path_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
+DEFINE_SEQ_ATTRIBUTE(ipoib_path);
void ipoib_create_debug_files(struct net_device *dev)
{
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index f772fe8c5b66..abfab89423f4 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -2480,6 +2480,8 @@ static struct net_device *ipoib_add_port(const char *format,
/* call event handler to ensure pkey in sync */
queue_work(ipoib_workqueue, &priv->flush_heavy);
+ ndev->rtnl_link_ops = ipoib_get_link_ops();
+
result = register_netdev(ndev);
if (result) {
pr_warn("%s: couldn't register ipoib port %d; error %d\n",
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_netlink.c b/drivers/infiniband/ulp/ipoib/ipoib_netlink.c
index 38c984d16996..d5a90a66b45c 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_netlink.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_netlink.c
@@ -144,6 +144,16 @@ static int ipoib_new_child_link(struct net *src_net, struct net_device *dev,
return 0;
}
+static void ipoib_del_child_link(struct net_device *dev, struct list_head *head)
+{
+ struct ipoib_dev_priv *priv = ipoib_priv(dev);
+
+ if (!priv->parent)
+ return;
+
+ unregister_netdevice_queue(dev, head);
+}
+
static size_t ipoib_get_size(const struct net_device *dev)
{
return nla_total_size(2) + /* IFLA_IPOIB_PKEY */
@@ -158,6 +168,7 @@ static struct rtnl_link_ops ipoib_link_ops __read_mostly = {
.priv_size = sizeof(struct ipoib_dev_priv),
.setup = ipoib_setup_common,
.newlink = ipoib_new_child_link,
+ .dellink = ipoib_del_child_link,
.changelink = ipoib_changelink,
.get_size = ipoib_get_size,
.fill_info = ipoib_fill_info,
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
index 30865605e098..4c50a87ed7cc 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
@@ -195,6 +195,8 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
}
priv = ipoib_priv(ndev);
+ ndev->rtnl_link_ops = ipoib_get_link_ops();
+
result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
if (result && ndev->reg_state == NETREG_UNINITIALIZED)
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 695f701dc43d..436e17f1d0e5 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1141,12 +1141,7 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn,
* multiple data-outs on the same command can arrive -
* so post the buffer before hand
*/
- rc = isert_post_recv(isert_conn, rx_desc);
- if (rc) {
- isert_err("ib_post_recv failed with %d\n", rc);
- return rc;
- }
- return 0;
+ return isert_post_recv(isert_conn, rx_desc);
}
static int
@@ -1723,10 +1718,8 @@ isert_post_response(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd)
int ret;
ret = isert_post_recv(isert_conn, isert_cmd->rx_desc);
- if (ret) {
- isert_err("ib_post_recv failed with %d\n", ret);
+ if (ret)
return ret;
- }
ret = ib_post_send(isert_conn->qp, &isert_cmd->tx_desc.send_wr, NULL);
if (ret) {
@@ -2098,10 +2091,8 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
&isert_cmd->tx_desc.send_wr);
rc = isert_post_recv(isert_conn, isert_cmd->rx_desc);
- if (rc) {
- isert_err("ib_post_recv failed with %d\n", rc);
+ if (rc)
return rc;
- }
chain_wr = &isert_cmd->tx_desc.send_wr;
}
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c b/drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c
index 298b747d0330..ac4c49cbf153 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c
@@ -312,7 +312,7 @@ static struct attribute *rtrs_clt_stats_attrs[] = {
NULL
};
-static struct attribute_group rtrs_clt_stats_attr_group = {
+static const struct attribute_group rtrs_clt_stats_attr_group = {
.attrs = rtrs_clt_stats_attrs,
};
@@ -388,7 +388,7 @@ static struct attribute *rtrs_clt_sess_attrs[] = {
NULL,
};
-static struct attribute_group rtrs_clt_sess_attr_group = {
+static const struct attribute_group rtrs_clt_sess_attr_group = {
.attrs = rtrs_clt_sess_attrs,
};
@@ -460,7 +460,7 @@ static struct attribute *rtrs_clt_attrs[] = {
NULL,
};
-static struct attribute_group rtrs_clt_attr_group = {
+static const struct attribute_group rtrs_clt_attr_group = {
.attrs = rtrs_clt_attrs,
};
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-pri.h b/drivers/infiniband/ulp/rtrs/rtrs-pri.h
index 0a93c87ef92b..b8e43dc4d95a 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-pri.h
+++ b/drivers/infiniband/ulp/rtrs/rtrs-pri.h
@@ -115,7 +115,6 @@ struct rtrs_sess {
/* rtrs information unit */
struct rtrs_iu {
- struct list_head list;
struct ib_cqe cqe;
dma_addr_t dma_addr;
void *buf;
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
index cf6a2be61695..07fbb063555d 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
@@ -135,7 +135,7 @@ static struct attribute *rtrs_srv_sess_attrs[] = {
NULL,
};
-static struct attribute_group rtrs_srv_sess_attr_group = {
+static const struct attribute_group rtrs_srv_sess_attr_group = {
.attrs = rtrs_srv_sess_attrs,
};
@@ -148,7 +148,7 @@ static struct attribute *rtrs_srv_stats_attrs[] = {
NULL,
};
-static struct attribute_group rtrs_srv_stats_attr_group = {
+static const struct attribute_group rtrs_srv_stats_attr_group = {
.attrs = rtrs_srv_stats_attrs,
};
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.c b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
index 28f6414dfa3d..d6f93601712e 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -16,6 +16,7 @@
#include "rtrs-srv.h"
#include "rtrs-log.h"
#include <rdma/ib_cm.h>
+#include <rdma/ib_verbs.h>
MODULE_DESCRIPTION("RDMA Transport Server");
MODULE_LICENSE("GPL");
@@ -31,6 +32,7 @@ MODULE_LICENSE("GPL");
static struct rtrs_rdma_dev_pd dev_pd;
static mempool_t *chunk_pool;
struct class *rtrs_dev_class;
+static struct rtrs_srv_ib_ctx ib_ctx;
static int __read_mostly max_chunk_size = DEFAULT_MAX_CHUNK_SIZE;
static int __read_mostly sess_queue_depth = DEFAULT_SESS_QUEUE_DEPTH;
@@ -2042,6 +2044,70 @@ static void free_srv_ctx(struct rtrs_srv_ctx *ctx)
kfree(ctx);
}
+static int rtrs_srv_add_one(struct ib_device *device)
+{
+ struct rtrs_srv_ctx *ctx;
+ int ret = 0;
+
+ mutex_lock(&ib_ctx.ib_dev_mutex);
+ if (ib_ctx.ib_dev_count)
+ goto out;
+
+ /*
+ * Since our CM IDs are NOT bound to any ib device we will create them
+ * only once
+ */
+ ctx = ib_ctx.srv_ctx;
+ ret = rtrs_srv_rdma_init(ctx, ib_ctx.port);
+ if (ret) {
+ /*
+ * We errored out here.
+ * According to the ib code, if we encounter an error here then the
+ * error code is ignored, and no more calls to our ops are made.
+ */
+ pr_err("Failed to initialize RDMA connection");
+ goto err_out;
+ }
+
+out:
+ /*
+ * Keep a track on the number of ib devices added
+ */
+ ib_ctx.ib_dev_count++;
+
+err_out:
+ mutex_unlock(&ib_ctx.ib_dev_mutex);
+ return ret;
+}
+
+static void rtrs_srv_remove_one(struct ib_device *device, void *client_data)
+{
+ struct rtrs_srv_ctx *ctx;
+
+ mutex_lock(&ib_ctx.ib_dev_mutex);
+ ib_ctx.ib_dev_count--;
+
+ if (ib_ctx.ib_dev_count)
+ goto out;
+
+ /*
+ * Since our CM IDs are NOT bound to any ib device we will remove them
+ * only once, when the last device is removed
+ */
+ ctx = ib_ctx.srv_ctx;
+ rdma_destroy_id(ctx->cm_id_ip);
+ rdma_destroy_id(ctx->cm_id_ib);
+
+out:
+ mutex_unlock(&ib_ctx.ib_dev_mutex);
+}
+
+static struct ib_client rtrs_srv_client = {
+ .name = "rtrs_server",
+ .add = rtrs_srv_add_one,
+ .remove = rtrs_srv_remove_one
+};
+
/**
* rtrs_srv_open() - open RTRS server context
* @ops: callback functions
@@ -2060,7 +2126,11 @@ struct rtrs_srv_ctx *rtrs_srv_open(struct rtrs_srv_ops *ops, u16 port)
if (!ctx)
return ERR_PTR(-ENOMEM);
- err = rtrs_srv_rdma_init(ctx, port);
+ mutex_init(&ib_ctx.ib_dev_mutex);
+ ib_ctx.srv_ctx = ctx;
+ ib_ctx.port = port;
+
+ err = ib_register_client(&rtrs_srv_client);
if (err) {
free_srv_ctx(ctx);
return ERR_PTR(err);
@@ -2099,8 +2169,8 @@ static void close_ctx(struct rtrs_srv_ctx *ctx)
*/
void rtrs_srv_close(struct rtrs_srv_ctx *ctx)
{
- rdma_destroy_id(ctx->cm_id_ip);
- rdma_destroy_id(ctx->cm_id_ib);
+ ib_unregister_client(&rtrs_srv_client);
+ mutex_destroy(&ib_ctx.ib_dev_mutex);
close_ctx(ctx);
free_srv_ctx(ctx);
}
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.h b/drivers/infiniband/ulp/rtrs/rtrs-srv.h
index dc95b0932f0d..08b0b8a6eebe 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.h
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.h
@@ -118,6 +118,13 @@ struct rtrs_srv_ctx {
struct list_head srv_list;
};
+struct rtrs_srv_ib_ctx {
+ struct rtrs_srv_ctx *srv_ctx;
+ u16 port;
+ struct mutex ib_dev_mutex;
+ int ib_dev_count;
+};
+
extern struct class *rtrs_dev_class;
void close_sess(struct rtrs_srv_sess *sess);