netdev - [PATCH 13/17] nvmet-tcp: allocate socket file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230811121755.24715-14-hare@suse.de>
Date: Fri, 11 Aug 2023 14:17:51 +0200
From: Hannes Reinecke <hare@...e.de>
To: Christoph Hellwig <hch@....de>
Cc: Sagi Grimberg <sagi@...mberg.me>,
	Keith Busch <kbusch@...nel.org>,
	linux-nvme@...ts.infradead.org,
	Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org,
	Hannes Reinecke <hare@...e.de>
Subject: [PATCH 13/17] nvmet-tcp: allocate socket file

For the TLS upcall we need to allocate a socket file such
that the userspace daemon is able to use the socket.

Signed-off-by: Hannes Reinecke <hare@...e.de>
Reviewed-by: Sagi Grimberg <sagi@...mberg.me>
---
 drivers/nvme/target/tcp.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index d44e9051ddd9..f19ea9d923fd 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -1493,12 +1493,12 @@ static void nvmet_tcp_release_queue_work(struct work_struct *w)
 	nvmet_sq_destroy(&queue->nvme_sq);
 	cancel_work_sync(&queue->io_work);
 	nvmet_tcp_free_cmd_data_in_buffers(queue);
-	sock_release(queue->sock);
+	/* ->sock will be released by fput() */
+	fput(queue->sock->file);
 	nvmet_tcp_free_cmds(queue);
 	if (queue->hdr_digest || queue->data_digest)
 		nvmet_tcp_free_crypto(queue);
 	ida_free(&nvmet_tcp_queue_ida, queue->idx);
-
 	page = virt_to_head_page(queue->pf_cache.va);
 	__page_frag_cache_drain(page, queue->pf_cache.pagecnt_bias);
 	kfree(queue);
@@ -1625,6 +1625,7 @@ static void nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
 		struct socket *newsock)
 {
 	struct nvmet_tcp_queue *queue;
+	struct file *sock_file = NULL;
 	int ret;
 
 	queue = kzalloc(sizeof(*queue), GFP_KERNEL);
@@ -1644,10 +1645,16 @@ static void nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
 	init_llist_head(&queue->resp_list);
 	INIT_LIST_HEAD(&queue->resp_send_list);
 
+	sock_file = sock_alloc_file(queue->sock, O_CLOEXEC, NULL);
+	if (IS_ERR(sock_file)) {
+		ret = PTR_ERR(sock_file);
+		goto out_free_queue;
+	}
+
 	queue->idx = ida_alloc(&nvmet_tcp_queue_ida, GFP_KERNEL);
 	if (queue->idx < 0) {
 		ret = queue->idx;
-		goto out_free_queue;
+		goto out_sock;
 	}
 
 	ret = nvmet_tcp_alloc_cmd(queue, &queue->connect);
@@ -1678,11 +1685,14 @@ static void nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
 	nvmet_tcp_free_cmd(&queue->connect);
 out_ida_remove:
 	ida_free(&nvmet_tcp_queue_ida, queue->idx);
+out_sock:
+	fput(queue->sock->file);
 out_free_queue:
 	kfree(queue);
 out_release:
 	pr_err("failed to allocate queue, error %d\n", ret);
-	sock_release(newsock);
+	if (!sock_file)
+		sock_release(newsock);
 }
 
 static void nvmet_tcp_accept_work(struct work_struct *w)
-- 
2.35.3