From c045ad2cc01e473b98771379eb58fe13560b7f70 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Tue, 12 Oct 2021 08:58:35 -0700 Subject: [PATCH] ax25: constify dev_addr passing In preparation for netdev->dev_addr being constant make all relevant arguments in AX25 constant. Modify callers as well (netrom, rose). Signed-off-by: Jakub Kicinski --- include/net/ax25.h | 13 +++++++------ net/ax25/af_ax25.c | 2 +- net/ax25/ax25_dev.c | 2 +- net/ax25/ax25_iface.c | 6 +++--- net/ax25/ax25_in.c | 4 ++-- net/ax25/ax25_out.c | 2 +- net/netrom/af_netrom.c | 4 ++-- net/netrom/nr_dev.c | 6 +++--- net/netrom/nr_route.c | 4 ++-- net/rose/rose_link.c | 8 ++++---- 10 files changed, 26 insertions(+), 25 deletions(-) diff --git a/include/net/ax25.h b/include/net/ax25.h index 8b7eb46ad72d..03d409de61ad 100644 --- a/include/net/ax25.h +++ b/include/net/ax25.h @@ -304,7 +304,7 @@ extern spinlock_t ax25_list_lock; void ax25_cb_add(ax25_cb *); struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); -ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, +ax25_cb *ax25_find_cb(const ax25_address *, ax25_address *, ax25_digi *, struct net_device *); void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); void ax25_destroy_socket(ax25_cb *); @@ -384,10 +384,11 @@ struct ax25_linkfail { void ax25_linkfail_register(struct ax25_linkfail *lf); void ax25_linkfail_release(struct ax25_linkfail *lf); -int __must_check ax25_listen_register(ax25_address *, struct net_device *); -void ax25_listen_release(ax25_address *, struct net_device *); +int __must_check ax25_listen_register(const ax25_address *, + struct net_device *); +void ax25_listen_release(const ax25_address *, struct net_device *); int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); -int ax25_listen_mine(ax25_address *, struct net_device *); +int ax25_listen_mine(const ax25_address *, struct net_device *); void ax25_link_failed(ax25_cb *, int); int ax25_protocol_is_registered(unsigned int); @@ -401,8 +402,8 @@ netdev_tx_t ax25_ip_xmit(struct sk_buff *skb); extern const struct header_ops ax25_header_ops; /* ax25_out.c */ -ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, - ax25_digi *, struct net_device *); +ax25_cb *ax25_send_frame(struct sk_buff *, int, const ax25_address *, + ax25_address *, ax25_digi *, struct net_device *); void ax25_output(ax25_cb *, int, struct sk_buff *); void ax25_kick(ax25_cb *); void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 2631efc6e359..2f34bbdde0e8 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -202,7 +202,7 @@ struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr, * Find an AX.25 control block given both ends. It will only pick up * floating AX.25 control blocks or non Raw socket bound control blocks. */ -ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr, +ax25_cb *ax25_find_cb(const ax25_address *src_addr, ax25_address *dest_addr, ax25_digi *digi, struct net_device *dev) { ax25_cb *s; diff --git a/net/ax25/ax25_dev.c b/net/ax25/ax25_dev.c index 4ac2e0847652..d0a043a51848 100644 --- a/net/ax25/ax25_dev.c +++ b/net/ax25/ax25_dev.c @@ -35,7 +35,7 @@ ax25_dev *ax25_addr_ax25dev(ax25_address *addr) spin_lock_bh(&ax25_dev_lock); for (ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) - if (ax25cmp(addr, (ax25_address *)ax25_dev->dev->dev_addr) == 0) { + if (ax25cmp(addr, (const ax25_address *)ax25_dev->dev->dev_addr) == 0) { res = ax25_dev; } spin_unlock_bh(&ax25_dev_lock); diff --git a/net/ax25/ax25_iface.c b/net/ax25/ax25_iface.c index b4083f30af0d..979bc4b828a0 100644 --- a/net/ax25/ax25_iface.c +++ b/net/ax25/ax25_iface.c @@ -98,7 +98,7 @@ void ax25_linkfail_release(struct ax25_linkfail *lf) EXPORT_SYMBOL(ax25_linkfail_release); -int ax25_listen_register(ax25_address *callsign, struct net_device *dev) +int ax25_listen_register(const ax25_address *callsign, struct net_device *dev) { struct listen_struct *listen; @@ -121,7 +121,7 @@ int ax25_listen_register(ax25_address *callsign, struct net_device *dev) EXPORT_SYMBOL(ax25_listen_register); -void ax25_listen_release(ax25_address *callsign, struct net_device *dev) +void ax25_listen_release(const ax25_address *callsign, struct net_device *dev) { struct listen_struct *s, *listen; @@ -171,7 +171,7 @@ int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *) return res; } -int ax25_listen_mine(ax25_address *callsign, struct net_device *dev) +int ax25_listen_mine(const ax25_address *callsign, struct net_device *dev) { struct listen_struct *listen; diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c index cd6afe895db9..1cac25aca637 100644 --- a/net/ax25/ax25_in.c +++ b/net/ax25/ax25_in.c @@ -181,7 +181,7 @@ static int ax25_process_rx_frame(ax25_cb *ax25, struct sk_buff *skb, int type, i } static int ax25_rcv(struct sk_buff *skb, struct net_device *dev, - ax25_address *dev_addr, struct packet_type *ptype) + const ax25_address *dev_addr, struct packet_type *ptype) { ax25_address src, dest, *next_digi = NULL; int type = 0, mine = 0, dama; @@ -447,5 +447,5 @@ int ax25_kiss_rcv(struct sk_buff *skb, struct net_device *dev, skb_pull(skb, AX25_KISS_HEADER_LEN); /* Remove the KISS byte */ - return ax25_rcv(skb, dev, (ax25_address *)dev->dev_addr, ptype); + return ax25_rcv(skb, dev, (const ax25_address *)dev->dev_addr, ptype); } diff --git a/net/ax25/ax25_out.c b/net/ax25/ax25_out.c index 22f2f66c6e0a..3db76d2470e9 100644 --- a/net/ax25/ax25_out.c +++ b/net/ax25/ax25_out.c @@ -29,7 +29,7 @@ static DEFINE_SPINLOCK(ax25_frag_lock); -ax25_cb *ax25_send_frame(struct sk_buff *skb, int paclen, ax25_address *src, ax25_address *dest, ax25_digi *digi, struct net_device *dev) +ax25_cb *ax25_send_frame(struct sk_buff *skb, int paclen, const ax25_address *src, ax25_address *dest, ax25_digi *digi, struct net_device *dev) { ax25_dev *ax25_dev; ax25_cb *ax25; diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 6d16e1ab1a8a..775064cdd0ee 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -633,7 +633,7 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr, struct sock *sk = sock->sk; struct nr_sock *nr = nr_sk(sk); struct sockaddr_ax25 *addr = (struct sockaddr_ax25 *)uaddr; - ax25_address *source = NULL; + const ax25_address *source = NULL; ax25_uid_assoc *user; struct net_device *dev; int err = 0; @@ -673,7 +673,7 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr, err = -ENETUNREACH; goto out_release; } - source = (ax25_address *)dev->dev_addr; + source = (const ax25_address *)dev->dev_addr; user = ax25_findbyuid(current_euid()); if (user) { diff --git a/net/netrom/nr_dev.c b/net/netrom/nr_dev.c index d1ca413d3317..3aaac4a22b38 100644 --- a/net/netrom/nr_dev.c +++ b/net/netrom/nr_dev.c @@ -108,7 +108,7 @@ static int __must_check nr_set_mac_address(struct net_device *dev, void *addr) if (err) return err; - ax25_listen_release((ax25_address *)dev->dev_addr, NULL); + ax25_listen_release((const ax25_address *)dev->dev_addr, NULL); } dev_addr_set(dev, sa->sa_data); @@ -120,7 +120,7 @@ static int nr_open(struct net_device *dev) { int err; - err = ax25_listen_register((ax25_address *)dev->dev_addr, NULL); + err = ax25_listen_register((const ax25_address *)dev->dev_addr, NULL); if (err) return err; @@ -131,7 +131,7 @@ static int nr_open(struct net_device *dev) static int nr_close(struct net_device *dev) { - ax25_listen_release((ax25_address *)dev->dev_addr, NULL); + ax25_listen_release((const ax25_address *)dev->dev_addr, NULL); netif_stop_queue(dev); return 0; } diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index ddd5cbd455e3..baea3cbd76ca 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -598,7 +598,7 @@ struct net_device *nr_dev_get(ax25_address *addr) rcu_read_lock(); for_each_netdev_rcu(&init_net, dev) { if ((dev->flags & IFF_UP) && dev->type == ARPHRD_NETROM && - ax25cmp(addr, (ax25_address *)dev->dev_addr) == 0) { + ax25cmp(addr, (const ax25_address *)dev->dev_addr) == 0) { dev_hold(dev); goto out; } @@ -825,7 +825,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25) ax25s = nr_neigh->ax25; nr_neigh->ax25 = ax25_send_frame(skb, 256, - (ax25_address *)dev->dev_addr, + (const ax25_address *)dev->dev_addr, &nr_neigh->callsign, nr_neigh->digipeat, nr_neigh->dev); if (ax25s) diff --git a/net/rose/rose_link.c b/net/rose/rose_link.c index f6102e6f5161..8b96a56d3a49 100644 --- a/net/rose/rose_link.c +++ b/net/rose/rose_link.c @@ -94,11 +94,11 @@ static void rose_t0timer_expiry(struct timer_list *t) */ static int rose_send_frame(struct sk_buff *skb, struct rose_neigh *neigh) { - ax25_address *rose_call; + const ax25_address *rose_call; ax25_cb *ax25s; if (ax25cmp(&rose_callsign, &null_ax25_address) == 0) - rose_call = (ax25_address *)neigh->dev->dev_addr; + rose_call = (const ax25_address *)neigh->dev->dev_addr; else rose_call = &rose_callsign; @@ -117,11 +117,11 @@ static int rose_send_frame(struct sk_buff *skb, struct rose_neigh *neigh) */ static int rose_link_up(struct rose_neigh *neigh) { - ax25_address *rose_call; + const ax25_address *rose_call; ax25_cb *ax25s; if (ax25cmp(&rose_callsign, &null_ax25_address) == 0) - rose_call = (ax25_address *)neigh->dev->dev_addr; + rose_call = (const ax25_address *)neigh->dev->dev_addr; else rose_call = &rose_callsign;