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llc/snap: constify dev_addr passing

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In preparation for netdev->dev_addr being constant
make all relevant arguments in LLC and SNAP constant.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2021-10-12 08:58:37 -07:00
parent db95732446
commit 2ef6db76ba
9 changed files with 10 additions and 9 deletions
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2
include/net/datalink.h
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@ -12,7 +12,7 @@ struct datalink_proto {
int (*rcvfunc)(struct sk_buff *, struct net_device *,
struct packet_type *, struct net_device *);
int (*request)(struct datalink_proto *, struct sk_buff *,
unsigned char *);
const unsigned char *);
struct list_head node;
};

2
include/net/llc.h
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@ -133,7 +133,7 @@ static inline void llc_sap_put(struct llc_sap *sap)
struct llc_sap *llc_sap_find(unsigned char sap_value);
int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb,
unsigned char *dmac, unsigned char dsap);
const unsigned char *dmac, unsigned char dsap);
void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb);
void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb);

3
include/net/llc_if.h
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@ -62,7 +62,8 @@
#define LLC_STATUS_CONFLICT 7 /* disconnect conn */
#define LLC_STATUS_RESET_DONE 8 /* */
int llc_establish_connection(struct sock *sk, u8 *lmac, u8 *dmac, u8 dsap);
int llc_establish_connection(struct sock *sk, const u8 *lmac, u8 *dmac,
u8 dsap);
int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb);
int llc_send_disc(struct sock *sk);
#endif /* LLC_IF_H */

2
net/802/p8022.c
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@ -23,7 +23,7 @@
#include <net/p8022.h>
static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb,
unsigned char *dest)
const unsigned char *dest)
{
llc_build_and_send_ui_pkt(dl->sap, skb, dest, dl->sap->laddr.lsap);
return 0;

2
net/802/psnap.c
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@ -79,7 +79,7 @@ drop:
* Put a SNAP header on a frame and pass to 802.2
*/
static int snap_request(struct datalink_proto *dl,
struct sk_buff *skb, u8 *dest)
struct sk_buff *skb, const u8 *dest)
{
memcpy(skb_push(skb, 5), dl->type, 5);
llc_build_and_send_ui_pkt(snap_sap, skb, dest, snap_sap->laddr.lsap);

2
net/llc/llc_c_ac.c
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@ -781,7 +781,7 @@ int llc_conn_ac_send_sabme_cmd_p_set_x(struct sock *sk, struct sk_buff *skb)
if (nskb) {
struct llc_sap *sap = llc->sap;
u8 *dmac = llc->daddr.mac;
const u8 *dmac = llc->daddr.mac;
if (llc->dev->flags & IFF_LOOPBACK)
dmac = llc->dev->dev_addr;

2
net/llc/llc_if.c
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@ -80,7 +80,7 @@ out_free:
* establishment will inform to upper layer via calling it's confirm
* function and passing proper information.
*/
int llc_establish_connection(struct sock *sk, u8 *lmac, u8 *dmac, u8 dsap)
int llc_establish_connection(struct sock *sk, const u8 *lmac, u8 *dmac, u8 dsap)
{
int rc = -EISCONN;
struct llc_addr laddr, daddr;

2
net/llc/llc_output.c
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@ -56,7 +56,7 @@ int llc_mac_hdr_init(struct sk_buff *skb,
* package primitive as an event and send to SAP event handler
*/
int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb,
unsigned char *dmac, unsigned char dsap)
const unsigned char *dmac, unsigned char dsap)
{
int rc;
llc_pdu_header_init(skb, LLC_PDU_TYPE_U, sap->laddr.lsap,

2
net/llc/llc_proc.c
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@ -26,7 +26,7 @@
#include <net/llc_c_st.h>
#include <net/llc_conn.h>
static void llc_ui_format_mac(struct seq_file *seq, u8 *addr)
static void llc_ui_format_mac(struct seq_file *seq, const u8 *addr)
{
seq_printf(seq, "%pM", addr);
}