diff mbox series

[v2] net/memif: fix abstract socket addr_len

Message ID 20210723091857.9760-2-nathan.skrzypczak@gmail.com (mailing list archive)
State Accepted, archived
Delegated to: Thomas Monjalon
Headers show
Series [v2] net/memif: fix abstract socket addr_len | expand

Checks

Context Check Description
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-testing success Testing PASS
ci/iol-abi-testing success Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/checkpatch success coding style OK

Commit Message

Nathan Skrzypczak July 23, 2021, 9:18 a.m. UTC
This fixes using abstract sockets with memifs.
we were not passing the exact addr_len, which
requires zeroing the remaining sun_path and
doesn't appear well in other utilities (e.g.
lsof -U)

Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
---
 drivers/net/memif/memif_socket.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

Comments

> -----Original Message-----
> From: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
> Sent: Friday, July 23, 2021 11:19 AM
> To: dev@dpdk.org
> Cc: andrew.rybchenko@oktetlabs.ru; Jakub Grajciar -X (jgrajcia - PANTHEON
> TECH SRO at Cisco) <jgrajcia@cisco.com>
> Subject: [PATCH v2] net/memif: fix abstract socket addr_len
> 
> This fixes using abstract sockets with memifs.
> we were not passing the exact addr_len, which requires zeroing the remaining
> sun_path and doesn't appear well in other utilities (e.g.
> lsof -U)
> 
> Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>

Looks ok to me.

Reviewed-by: Jakub Grajciar <jgrajcia@cisco.com>
Thomas Monjalon July 30, 2021, 11:24 a.m. UTC | #2
> > This fixes using abstract sockets with memifs.
> > we were not passing the exact addr_len, which requires zeroing the remaining
> > sun_path and doesn't appear well in other utilities (e.g.
> > lsof -U)
> > 
> > Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
> 
> Looks ok to me.
> 
> Reviewed-by: Jakub Grajciar <jgrajcia@cisco.com>

Applied, thanks.
Nathan Skrzypczak July 30, 2021, 12:53 p.m. UTC | #3
Thanks !

Le ven. 30 juil. 2021 à 13:23, Thomas Monjalon <thomas@monjalon.net> a
écrit :

> > > This fixes using abstract sockets with memifs.
> > > we were not passing the exact addr_len, which requires zeroing the
> remaining
> > > sun_path and doesn't appear well in other utilities (e.g.
> > > lsof -U)
> > >
> > > Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
> >
> > Looks ok to me.
> >
> > Reviewed-by: Jakub Grajciar <jgrajcia@cisco.com>
>
> Applied, thanks.
>
>
>
diff mbox series

Patch

diff --git a/drivers/net/memif/memif_socket.c b/drivers/net/memif/memif_socket.c
index 5b373738e6..f58ff4c0cb 100644
--- a/drivers/net/memif/memif_socket.c
+++ b/drivers/net/memif/memif_socket.c
@@ -866,6 +866,7 @@  memif_socket_create(char *key, uint8_t listener, bool is_abstract)
 {
 	struct memif_socket *sock;
 	struct sockaddr_un un = { 0 };
+	uint32_t sunlen;
 	int sockfd;
 	int ret;
 	int on = 1;
@@ -890,7 +891,11 @@  memif_socket_create(char *key, uint8_t listener, bool is_abstract)
 			/* abstract address */
 			un.sun_path[0] = '\0';
 			strlcpy(un.sun_path + 1, sock->filename, MEMIF_SOCKET_UN_SIZE - 1);
+			sunlen = RTE_MIN(1 + strlen(sock->filename),
+					 MEMIF_SOCKET_UN_SIZE) +
+				 sizeof(un) - sizeof(un.sun_path);
 		} else {
+			sunlen = sizeof(un);
 			strlcpy(un.sun_path, sock->filename, MEMIF_SOCKET_UN_SIZE);
 		}
 
@@ -899,7 +904,7 @@  memif_socket_create(char *key, uint8_t listener, bool is_abstract)
 		if (ret < 0)
 			goto error;
 
-		ret = bind(sockfd, (struct sockaddr *)&un, sizeof(un));
+		ret = bind(sockfd, (struct sockaddr *)&un, sunlen);
 		if (ret < 0)
 			goto error;
 
@@ -1061,6 +1066,7 @@  memif_connect_client(struct rte_eth_dev *dev)
 {
 	int sockfd;
 	int ret;
+	uint32_t sunlen;
 	struct sockaddr_un sun = { 0 };
 	struct pmd_internals *pmd = dev->data->dev_private;
 
@@ -1075,16 +1081,19 @@  memif_connect_client(struct rte_eth_dev *dev)
 	}
 
 	sun.sun_family = AF_UNIX;
+	sunlen = sizeof(struct sockaddr_un);
 	if (pmd->flags & ETH_MEMIF_FLAG_SOCKET_ABSTRACT) {
 		/* abstract address */
 		sun.sun_path[0] = '\0';
 		strlcpy(sun.sun_path + 1,  pmd->socket_filename, MEMIF_SOCKET_UN_SIZE - 1);
+		sunlen = RTE_MIN(strlen(pmd->socket_filename) + 1,
+				 MEMIF_SOCKET_UN_SIZE) +
+			 sizeof(sun) - sizeof(sun.sun_path);
 	} else {
 		strlcpy(sun.sun_path,  pmd->socket_filename, MEMIF_SOCKET_UN_SIZE);
 	}
 
-	ret = connect(sockfd, (struct sockaddr *)&sun,
-		      sizeof(struct sockaddr_un));
+	ret = connect(sockfd, (struct sockaddr *)&sun, sunlen);
 	if (ret < 0) {
 		MIF_LOG(ERR, "Failed to connect socket: %s.", pmd->socket_filename);
 		goto error;