[PATCH] net: core: Convert inet_addr_is_any() to sockaddr_storage

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All the callers of inet_addr_is_any() have a sockaddr_storage-backed
sockaddr. Avoid casts and switch prototype to the actual object being
used, as part of the work to move away from internal use of struct
sockaddr.

Signed-off-by: Kees Cook <kees@xxxxxxxxxx>
---
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
Cc: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
Cc: Mike Christie <michael.christie@xxxxxxxxxx>
Cc: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
Cc: Maurizio Lombardi <mlombard@xxxxxxxxxx>
Cc: Dmitry Bogdanov <d.bogdanov@xxxxxxxxx>
Cc: Mingzhe Zou <mingzhe.zou@xxxxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <linux@xxxxxxxxxxx>
Cc: linux-nvme@xxxxxxxxxxxxxxxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: target-devel@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
 drivers/nvme/target/rdma.c          | 2 +-
 drivers/nvme/target/tcp.c           | 2 +-
 drivers/target/iscsi/iscsi_target.c | 2 +-
 include/linux/inet.h                | 2 +-
 net/core/utils.c                    | 8 ++++----
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 1afd93026f9b..18ea11342af1 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -1986,7 +1986,7 @@ static void nvmet_rdma_disc_port_addr(struct nvmet_req *req,
 	struct nvmet_rdma_port *port = nport->priv;
 	struct rdma_cm_id *cm_id = port->cm_id;
 
-	if (inet_addr_is_any((struct sockaddr *)&cm_id->route.addr.src_addr)) {
+	if (inet_addr_is_any(&cm_id->route.addr.src_addr)) {
 		struct nvmet_rdma_rsp *rsp =
 			container_of(req, struct nvmet_rdma_rsp, req);
 		struct rdma_cm_id *req_cm_id = rsp->queue->cm_id;
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index 7c51c2a8c109..df24244fb820 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -2158,7 +2158,7 @@ static void nvmet_tcp_disc_port_addr(struct nvmet_req *req,
 {
 	struct nvmet_tcp_port *port = nport->priv;
 
-	if (inet_addr_is_any((struct sockaddr *)&port->addr)) {
+	if (inet_addr_is_any(&port->addr)) {
 		struct nvmet_tcp_cmd *cmd =
 			container_of(req, struct nvmet_tcp_cmd, req);
 		struct nvmet_tcp_queue *queue = cmd->queue;
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 6002283cbeba..1ce68eda0090 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3471,7 +3471,7 @@ iscsit_build_sendtargets_response(struct iscsit_cmd *cmd,
 					}
 				}
 
-				if (inet_addr_is_any((struct sockaddr *)&np->np_sockaddr))
+				if (inet_addr_is_any(&np->np_sockaddr))
 					sockaddr = &conn->local_sockaddr;
 				else
 					sockaddr = &np->np_sockaddr;
diff --git a/include/linux/inet.h b/include/linux/inet.h
index bd8276e96e60..d59e3013b0e2 100644
--- a/include/linux/inet.h
+++ b/include/linux/inet.h
@@ -55,6 +55,6 @@ extern int in6_pton(const char *src, int srclen, u8 *dst, int delim, const char
 
 extern int inet_pton_with_scope(struct net *net, unsigned short af,
 		const char *src, const char *port, struct sockaddr_storage *addr);
-extern bool inet_addr_is_any(struct sockaddr *addr);
+extern bool inet_addr_is_any(struct sockaddr_storage *addr);
 
 #endif	/* _LINUX_INET_H */
diff --git a/net/core/utils.c b/net/core/utils.c
index 27f4cffaae05..e47feeaa5a49 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -399,9 +399,9 @@ int inet_pton_with_scope(struct net *net, __kernel_sa_family_t af,
 }
 EXPORT_SYMBOL(inet_pton_with_scope);
 
-bool inet_addr_is_any(struct sockaddr *addr)
+bool inet_addr_is_any(struct sockaddr_storage *addr)
 {
-	if (addr->sa_family == AF_INET6) {
+	if (addr->ss_family == AF_INET6) {
 		struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr;
 		const struct sockaddr_in6 in6_any =
 			{ .sin6_addr = IN6ADDR_ANY_INIT };
@@ -409,13 +409,13 @@ bool inet_addr_is_any(struct sockaddr *addr)
 		if (!memcmp(in6->sin6_addr.s6_addr,
 			    in6_any.sin6_addr.s6_addr, 16))
 			return true;
-	} else if (addr->sa_family == AF_INET) {
+	} else if (addr->ss_family == AF_INET) {
 		struct sockaddr_in *in = (struct sockaddr_in *)addr;
 
 		if (in->sin_addr.s_addr == htonl(INADDR_ANY))
 			return true;
 	} else {
-		pr_warn("unexpected address family %u\n", addr->sa_family);
+		pr_warn("unexpected address family %u\n", addr->ss_family);
 	}
 
 	return false;
-- 
2.34.1





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