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Diffstat (limited to 'net/atm/br2684.c')
-rw-r--r--net/atm/br2684.c90
1 files changed, 40 insertions, 50 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index c9230c398697..4d64d87e7578 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -6,6 +6,8 @@
* Eric Kinzie, 2006-2007, US Naval Research Laboratory
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -15,7 +17,7 @@
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/ip.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <net/arp.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
@@ -26,20 +28,14 @@
#include "common.h"
-#ifdef SKB_DEBUG
static void skb_debug(const struct sk_buff *skb)
{
+#ifdef SKB_DEBUG
#define NUM2PRINT 50
- char buf[NUM2PRINT * 3 + 1]; /* 3 chars per byte */
- int i = 0;
- for (i = 0; i < skb->len && i < NUM2PRINT; i++) {
- sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
- }
- printk(KERN_DEBUG "br2684: skb: %s\n", buf);
-}
-#else
-#define skb_debug(skb) do {} while (0)
+ print_hex_dump(KERN_DEBUG, "br2684: skb: ", DUMP_OFFSET,
+ 16, 1, skb->data, min(NUM2PRINT, skb->len), true);
#endif
+}
#define BR2684_ETHERTYPE_LEN 2
#define BR2684_PAD_LEN 2
@@ -68,7 +64,7 @@ struct br2684_vcc {
struct atm_vcc *atmvcc;
struct net_device *device;
/* keep old push, pop functions for chaining */
- void (*old_push) (struct atm_vcc * vcc, struct sk_buff * skb);
+ void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb);
void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb);
enum br2684_encaps encaps;
struct list_head brvccs;
@@ -148,7 +144,7 @@ static void br2684_pop(struct atm_vcc *vcc, struct sk_buff *skb)
struct br2684_vcc *brvcc = BR2684_VCC(vcc);
struct net_device *net_dev = skb->dev;
- pr_debug("br2684_pop(vcc %p ; net_dev %p )\n", vcc, net_dev);
+ pr_debug("(vcc %p ; net_dev %p )\n", vcc, net_dev);
brvcc->old_pop(vcc, skb);
if (!net_dev)
@@ -244,7 +240,7 @@ static netdev_tx_t br2684_start_xmit(struct sk_buff *skb,
struct br2684_dev *brdev = BRPRIV(dev);
struct br2684_vcc *brvcc;
- pr_debug("br2684_start_xmit, skb_dst(skb)=%p\n", skb_dst(skb));
+ pr_debug("skb_dst(skb)=%p\n", skb_dst(skb));
read_lock(&devs_lock);
brvcc = pick_outgoing_vcc(skb, brdev);
if (brvcc == NULL) {
@@ -300,7 +296,8 @@ static int br2684_setfilt(struct atm_vcc *atmvcc, void __user * arg)
struct br2684_dev *brdev;
read_lock(&devs_lock);
brdev = BRPRIV(br2684_find_dev(&fs.ifspec));
- if (brdev == NULL || list_empty(&brdev->brvccs) || brdev->brvccs.next != brdev->brvccs.prev) /* >1 VCC */
+ if (brdev == NULL || list_empty(&brdev->brvccs) ||
+ brdev->brvccs.next != brdev->brvccs.prev) /* >1 VCC */
brvcc = NULL;
else
brvcc = list_entry_brvcc(brdev->brvccs.next);
@@ -352,7 +349,7 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
struct net_device *net_dev = brvcc->device;
struct br2684_dev *brdev = BRPRIV(net_dev);
- pr_debug("br2684_push\n");
+ pr_debug("\n");
if (unlikely(skb == NULL)) {
/* skb==NULL means VCC is being destroyed */
@@ -376,29 +373,25 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
__skb_trim(skb, skb->len - 4);
/* accept packets that have "ipv[46]" in the snap header */
- if ((skb->len >= (sizeof(llc_oui_ipv4)))
- &&
- (memcmp
- (skb->data, llc_oui_ipv4,
- sizeof(llc_oui_ipv4) - BR2684_ETHERTYPE_LEN) == 0)) {
- if (memcmp
- (skb->data + 6, ethertype_ipv6,
- sizeof(ethertype_ipv6)) == 0)
+ if ((skb->len >= (sizeof(llc_oui_ipv4))) &&
+ (memcmp(skb->data, llc_oui_ipv4,
+ sizeof(llc_oui_ipv4) - BR2684_ETHERTYPE_LEN) == 0)) {
+ if (memcmp(skb->data + 6, ethertype_ipv6,
+ sizeof(ethertype_ipv6)) == 0)
skb->protocol = htons(ETH_P_IPV6);
- else if (memcmp
- (skb->data + 6, ethertype_ipv4,
- sizeof(ethertype_ipv4)) == 0)
+ else if (memcmp(skb->data + 6, ethertype_ipv4,
+ sizeof(ethertype_ipv4)) == 0)
skb->protocol = htons(ETH_P_IP);
else
goto error;
skb_pull(skb, sizeof(llc_oui_ipv4));
skb_reset_network_header(skb);
skb->pkt_type = PACKET_HOST;
- /*
- * Let us waste some time for checking the encapsulation.
- * Note, that only 7 char is checked so frames with a valid FCS
- * are also accepted (but FCS is not checked of course).
- */
+ /*
+ * Let us waste some time for checking the encapsulation.
+ * Note, that only 7 char is checked so frames with a valid FCS
+ * are also accepted (but FCS is not checked of course).
+ */
} else if ((skb->len >= sizeof(llc_oui_pid_pad)) &&
(memcmp(skb->data, llc_oui_pid_pad, 7) == 0)) {
skb_pull(skb, sizeof(llc_oui_pid_pad));
@@ -479,8 +472,7 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
write_lock_irq(&devs_lock);
net_dev = br2684_find_dev(&be.ifspec);
if (net_dev == NULL) {
- printk(KERN_ERR
- "br2684: tried to attach to non-existant device\n");
+ pr_err("tried to attach to non-existant device\n");
err = -ENXIO;
goto error;
}
@@ -494,17 +486,16 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
err = -EEXIST;
goto error;
}
- if (be.fcs_in != BR2684_FCSIN_NO || be.fcs_out != BR2684_FCSOUT_NO ||
- be.fcs_auto || be.has_vpiid || be.send_padding || (be.encaps !=
- BR2684_ENCAPS_VC
- && be.encaps !=
- BR2684_ENCAPS_LLC)
- || be.min_size != 0) {
+ if (be.fcs_in != BR2684_FCSIN_NO ||
+ be.fcs_out != BR2684_FCSOUT_NO ||
+ be.fcs_auto || be.has_vpiid || be.send_padding ||
+ (be.encaps != BR2684_ENCAPS_VC &&
+ be.encaps != BR2684_ENCAPS_LLC) ||
+ be.min_size != 0) {
err = -EINVAL;
goto error;
}
- pr_debug("br2684_regvcc vcc=%p, encaps=%d, brvcc=%p\n", atmvcc,
- be.encaps, brvcc);
+ pr_debug("vcc=%p, encaps=%d, brvcc=%p\n", atmvcc, be.encaps, brvcc);
if (list_empty(&brdev->brvccs) && !brdev->mac_was_set) {
unsigned char *esi = atmvcc->dev->esi;
if (esi[0] | esi[1] | esi[2] | esi[3] | esi[4] | esi[5])
@@ -541,7 +532,8 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
}
__module_get(THIS_MODULE);
return 0;
- error:
+
+error:
write_unlock_irq(&devs_lock);
kfree(brvcc);
return err;
@@ -587,7 +579,7 @@ static void br2684_setup_routed(struct net_device *netdev)
INIT_LIST_HEAD(&brdev->brvccs);
}
-static int br2684_create(void __user * arg)
+static int br2684_create(void __user *arg)
{
int err;
struct net_device *netdev;
@@ -595,11 +587,10 @@ static int br2684_create(void __user * arg)
struct atm_newif_br2684 ni;
enum br2684_payload payload;
- pr_debug("br2684_create\n");
+ pr_debug("\n");
- if (copy_from_user(&ni, arg, sizeof ni)) {
+ if (copy_from_user(&ni, arg, sizeof ni))
return -EFAULT;
- }
if (ni.media & BR2684_FLAG_ROUTED)
payload = p_routed;
@@ -607,9 +598,8 @@ static int br2684_create(void __user * arg)
payload = p_bridged;
ni.media &= 0xffff; /* strip flags */
- if (ni.media != BR2684_MEDIA_ETHERNET || ni.mtu != 1500) {
+ if (ni.media != BR2684_MEDIA_ETHERNET || ni.mtu != 1500)
return -EINVAL;
- }
netdev = alloc_netdev(sizeof(struct br2684_dev),
ni.ifname[0] ? ni.ifname : "nas%d",
@@ -624,7 +614,7 @@ static int br2684_create(void __user * arg)
/* open, stop, do_ioctl ? */
err = register_netdev(netdev);
if (err < 0) {
- printk(KERN_ERR "br2684_create: register_netdev failed\n");
+ pr_err("register_netdev failed\n");
free_netdev(netdev);
return err;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.