Signed-off-by: Pranjal Bhor <bhor.pran...@gmail.com>
---
drivers/staging/wlan-ng/p80211conv.c | 138 ++++++++++++++++++-----------------
1 file changed, 72 insertions(+), 66 deletions(-)
diff --git a/drivers/staging/wlan-ng/p80211conv.c
b/drivers/staging/wlan-ng/p80211conv.c
index 1b02cdf..f6d8aa5 100644
--- a/drivers/staging/wlan-ng/p80211conv.c
+++ b/drivers/staging/wlan-ng/p80211conv.c
@@ -49,7 +49,8 @@
*
* --------------------------------------------------------------------
*
-*================================================================ */
+*================================================================
+*/
#include <linux/module.h>
#include <linux/kernel.h>
@@ -101,12 +102,12 @@ static u8 oui_8021h[] = { 0x00, 0x00, 0xf8 };
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
int skb_ether_to_p80211(wlandevice_t *wlandev, u32 ethconv,
struct sk_buff *skb, union p80211_hdr *p80211_hdr,
struct p80211_metawep *p80211_wep)
{
-
__le16 fc;
u16 proto;
struct wlan_ethhdr e_hdr;
@@ -148,11 +149,11 @@ int skb_ether_to_p80211(wlandevice_t *wlandev, u32
ethconv,
/* tack on SNAP */
e_snap =
- (struct wlan_snap *) skb_push(skb,
+ (struct wlan_snap *)skb_push(skb,
sizeof(struct wlan_snap));
e_snap->type = htons(proto);
- if (ethconv == WLAN_ETHCONV_8021h
- && p80211_stt_findproto(proto)) {
+ if (ethconv == WLAN_ETHCONV_8021h &&
+ p80211_stt_findproto(proto)) {
memcpy(e_snap->oui, oui_8021h,
WLAN_IEEE_OUI_LEN);
} else {
@@ -162,12 +163,11 @@ int skb_ether_to_p80211(wlandevice_t *wlandev, u32
ethconv,
/* tack on llc */
e_llc =
- (struct wlan_llc *) skb_push(skb,
+ (struct wlan_llc *)skb_push(skb,
sizeof(struct wlan_llc));
e_llc->dsap = 0xAA; /* SNAP, see IEEE 802 */
e_llc->ssap = 0xAA;
e_llc->ctl = 0x03;
-
}
}
@@ -202,8 +202,8 @@ int skb_ether_to_p80211(wlandevice_t *wlandev, u32 ethconv,
p80211_wep->data = NULL;
- if ((wlandev->hostwep & HOSTWEP_PRIVACYINVOKED)
- && (wlandev->hostwep & HOSTWEP_ENCRYPT)) {
+ if ((wlandev->hostwep & HOSTWEP_PRIVACYINVOKED) &&
+ (wlandev->hostwep & HOSTWEP_ENCRYPT)) {
/* XXXX need to pick keynum other than default? */
p80211_wep->data = kmalloc(skb->len, GFP_ATOMIC);
@@ -215,8 +215,8 @@ int skb_ether_to_p80211(wlandevice_t *wlandev, u32 ethconv,
p80211_wep->iv, p80211_wep->icv);
if (foo) {
netdev_warn(wlandev->netdev,
- "Host en-WEP failed, dropping frame (%d).\n",
- foo);
+ "Host en-WEP failed, dropping frame
(%d).\n",
+ foo);
return 2;
}
fc |= cpu_to_le16(WLAN_SET_FC_ISWEP(1));
@@ -238,10 +238,10 @@ static void orinoco_spy_gather(wlandevice_t *wlandev,
char *mac,
int i;
/* Gather wireless spy statistics: for each packet, compare the
- * source address with out list, and if match, get the stats... */
+ * source address with out list, and if match, get the stats...
+ */
for (i = 0; i < wlandev->spy_number; i++) {
-
if (!memcmp(wlandev->spy_address[i], mac, ETH_ALEN)) {
memcpy(wlandev->spy_address[i], mac, ETH_ALEN);
wlandev->spy_stat[i].level = rxmeta->signal;
@@ -273,7 +273,8 @@ static void orinoco_spy_gather(wlandevice_t *wlandev, char
*mac,
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
struct sk_buff *skb)
{
@@ -293,19 +294,19 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
payload_length = skb->len - WLAN_HDR_A3_LEN - WLAN_CRC_LEN;
payload_offset = WLAN_HDR_A3_LEN;
- w_hdr = (union p80211_hdr *) skb->data;
+ w_hdr = (union p80211_hdr *)skb->data;
/* setup some vars for convenience */
fc = le16_to_cpu(w_hdr->a3.fc);
if ((WLAN_GET_FC_TODS(fc) == 0) && (WLAN_GET_FC_FROMDS(fc) == 0)) {
ether_addr_copy(daddr, w_hdr->a3.a1);
ether_addr_copy(saddr, w_hdr->a3.a2);
- } else if ((WLAN_GET_FC_TODS(fc) == 0)
- && (WLAN_GET_FC_FROMDS(fc) == 1)) {
+ } else if ((WLAN_GET_FC_TODS(fc) == 0) &&
+ (WLAN_GET_FC_FROMDS(fc) == 1)) {
ether_addr_copy(daddr, w_hdr->a3.a1);
ether_addr_copy(saddr, w_hdr->a3.a3);
- } else if ((WLAN_GET_FC_TODS(fc) == 1)
- && (WLAN_GET_FC_FROMDS(fc) == 0)) {
+ } else if ((WLAN_GET_FC_TODS(fc) == 1) &&
+ (WLAN_GET_FC_FROMDS(fc) == 0)) {
ether_addr_copy(daddr, w_hdr->a3.a3);
ether_addr_copy(saddr, w_hdr->a3.a2);
} else {
@@ -320,18 +321,19 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
}
/* perform de-wep if necessary.. */
- if ((wlandev->hostwep & HOSTWEP_PRIVACYINVOKED) && WLAN_GET_FC_ISWEP(fc)
- && (wlandev->hostwep & HOSTWEP_DECRYPT)) {
+ if ((wlandev->hostwep & HOSTWEP_PRIVACYINVOKED) &&
+ WLAN_GET_FC_ISWEP(fc) &&
+ (wlandev->hostwep & HOSTWEP_DECRYPT)) {
if (payload_length <= 8) {
netdev_err(netdev,
"WEP frame too short (%u).\n", skb->len);
return 1;
}
foo = wep_decrypt(wlandev, skb->data + payload_offset + 4,
- payload_length - 8, -1,
- skb->data + payload_offset,
- skb->data + payload_offset +
- payload_length - 4);
+ payload_length - 8, -1,
+ skb->data + payload_offset,
+ skb->data + payload_offset +
+ payload_length - 4);
if (foo) {
/* de-wep failed, drop skb. */
pr_debug("Host de-WEP failed, dropping frame (%d).\n",
@@ -350,11 +352,11 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
wlandev->rx.decrypt++;
}
- e_hdr = (struct wlan_ethhdr *) (skb->data + payload_offset);
+ e_hdr = (struct wlan_ethhdr *)(skb->data + payload_offset);
- e_llc = (struct wlan_llc *) (skb->data + payload_offset);
+ e_llc = (struct wlan_llc *)(skb->data + payload_offset);
e_snap =
- (struct wlan_snap *) (skb->data + payload_offset +
+ (struct wlan_snap *)(skb->data + payload_offset +
sizeof(struct wlan_llc));
/* Test for the various encodings */
@@ -369,7 +371,7 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
/* A bogus length ethfrm has been encap'd. */
/* Is someone trying an oflow attack? */
netdev_err(netdev, "ENCAP frame too large (%d > %d)\n",
- payload_length, netdev->mtu + ETH_HLEN);
+ payload_length, netdev->mtu + ETH_HLEN);
return 1;
}
@@ -379,16 +381,15 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
skb_trim(skb, skb->len - WLAN_CRC_LEN);
} else if ((payload_length >= sizeof(struct wlan_llc) +
- sizeof(struct wlan_snap))
- && (e_llc->dsap == 0xaa)
- && (e_llc->ssap == 0xaa)
- && (e_llc->ctl == 0x03)
- &&
- (((memcmp(e_snap->oui, oui_rfc1042, WLAN_IEEE_OUI_LEN) == 0)
- && (ethconv == WLAN_ETHCONV_8021h)
- && (p80211_stt_findproto(le16_to_cpu(e_snap->type))))
- || (memcmp(e_snap->oui, oui_rfc1042, WLAN_IEEE_OUI_LEN) !=
- 0))) {
+ sizeof(struct wlan_snap)) &&
+ (e_llc->dsap == 0xaa) &&
+ (e_llc->ssap == 0xaa) &&
+ (e_llc->ctl == 0x03) && (((
+ memcmp(e_snap->oui, oui_rfc1042, WLAN_IEEE_OUI_LEN) == 0) &&
+ (ethconv == WLAN_ETHCONV_8021h) &&
+ (p80211_stt_findproto(le16_to_cpu(e_snap->type)))) ||
+ (memcmp(e_snap->oui, oui_rfc1042, WLAN_IEEE_OUI_LEN) !=
+ 0))) {
pr_debug("SNAP+RFC1042 len: %d\n", payload_length);
/* it's a SNAP + RFC1042 frame && protocol is in STT */
/* build 802.3 + RFC1042 */
@@ -398,7 +399,7 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
/* A bogus length ethfrm has been sent. */
/* Is someone trying an oflow attack? */
netdev_err(netdev, "SNAP frame too large (%d > %d)\n",
- payload_length, netdev->mtu);
+ payload_length, netdev->mtu);
return 1;
}
@@ -415,13 +416,14 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
skb_trim(skb, skb->len - WLAN_CRC_LEN);
} else if ((payload_length >= sizeof(struct wlan_llc) +
- sizeof(struct wlan_snap))
- && (e_llc->dsap == 0xaa)
- && (e_llc->ssap == 0xaa)
- && (e_llc->ctl == 0x03)) {
+ sizeof(struct wlan_snap)) &&
+ (e_llc->dsap == 0xaa) &&
+ (e_llc->ssap == 0xaa) &&
+ (e_llc->ctl == 0x03)) {
pr_debug("802.1h/RFC1042 len: %d\n", payload_length);
/* it's an 802.1h frame || (an RFC1042 && protocol not in STT)
- build a DIXII + RFC894 */
+ * build a DIXII + RFC894
+ */
/* Test for an overlength frame */
if ((payload_length - sizeof(struct wlan_llc) -
@@ -430,9 +432,9 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
/* A bogus length ethfrm has been sent. */
/* Is someone trying an oflow attack? */
netdev_err(netdev, "DIXII frame too large (%ld > %d)\n",
- (long int)(payload_length -
- sizeof(struct wlan_llc) -
- sizeof(struct wlan_snap)), netdev->mtu);
+ (long int)(payload_length -
+ sizeof(struct wlan_llc) -
+ sizeof(struct wlan_snap)), netdev->mtu);
return 1;
}
@@ -465,7 +467,7 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
/* A bogus length ethfrm has been sent. */
/* Is someone trying an oflow attack? */
netdev_err(netdev, "OTHER frame too large (%d > %d)\n",
- payload_length, netdev->mtu);
+ payload_length, netdev->mtu);
return 1;
}
@@ -480,7 +482,6 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32 ethconv,
/* chop off the 802.11 CRC */
skb_trim(skb, skb->len - WLAN_CRC_LEN);
-
}
/*
@@ -521,14 +522,16 @@ int skb_p80211_to_ether(wlandevice_t *wlandev, u32
ethconv,
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
int p80211_stt_findproto(u16 proto)
{
/* Always return found for now. This is the behavior used by the */
- /* Zoom Win95 driver when 802.1h mode is selected */
- /* TODO: If necessary, add an actual search we'll probably
- need this to match the CMAC's way of doing things.
- Need to do some testing to confirm.
+ /* Zoom Win95 driver when 802.1h mode is selected */
+ /*
+ * TODO: If necessary, add an actual search we'll probably
+ * need this to match the CMAC's way of doing things.
+ * Need to do some testing to confirm.
*/
if (proto == ETH_P_AARP) /* APPLETALK */
@@ -551,24 +554,25 @@ int p80211_stt_findproto(u16 proto)
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
void p80211skb_rxmeta_detach(struct sk_buff *skb)
{
struct p80211_rxmeta *rxmeta;
struct p80211_frmmeta *frmmeta;
/* Sanity checks */
- if (skb == NULL) { /* bad skb */
+ if (!skb) { /* bad skb */
pr_debug("Called w/ null skb.\n");
return;
}
frmmeta = P80211SKB_FRMMETA(skb);
- if (frmmeta == NULL) { /* no magic */
+ if (!frmmeta) { /* no magic */
pr_debug("Called w/ bad frmmeta magic.\n");
return;
}
rxmeta = frmmeta->rx;
- if (rxmeta == NULL) { /* bad meta ptr */
+ if (!rxmeta) { /* bad meta ptr */
pr_debug("Called w/ bad rxmeta ptr.\n");
return;
}
@@ -595,7 +599,8 @@ void p80211skb_rxmeta_detach(struct sk_buff *skb)
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb)
{
int result = 0;
@@ -603,7 +608,7 @@ int p80211skb_rxmeta_attach(struct wlandevice *wlandev,
struct sk_buff *skb)
struct p80211_frmmeta *frmmeta;
/* If these already have metadata, we error out! */
- if (P80211SKB_RXMETA(skb) != NULL) {
+ if (P80211SKB_RXMETA(skb)) {
netdev_err(wlandev->netdev,
"%s: RXmeta already attached!\n", wlandev->name);
result = 0;
@@ -611,9 +616,9 @@ int p80211skb_rxmeta_attach(struct wlandevice *wlandev,
struct sk_buff *skb)
}
/* Allocate the rxmeta */
- rxmeta = kzalloc(sizeof(struct p80211_rxmeta), GFP_ATOMIC);
+ rxmeta = kzalloc(sizeof(*rxmeta), GFP_ATOMIC);
- if (rxmeta == NULL) {
+ if (!rxmeta) {
netdev_err(wlandev->netdev,
"%s: Failed to allocate rxmeta.\n", wlandev->name);
result = 1;
@@ -626,7 +631,7 @@ int p80211skb_rxmeta_attach(struct wlandevice *wlandev,
struct sk_buff *skb)
/* Overlay a frmmeta_t onto skb->cb */
memset(skb->cb, 0, sizeof(struct p80211_frmmeta));
- frmmeta = (struct p80211_frmmeta *) (skb->cb);
+ frmmeta = (struct p80211_frmmeta *)(skb->cb);
frmmeta->magic = P80211_FRMMETA_MAGIC;
frmmeta->rx = rxmeta;
exit:
@@ -648,7 +653,8 @@ exit:
*
* Call context:
* May be called in interrupt or non-interrupt context
-----------------------------------------------------------------*/
+----------------------------------------------------------------
+*/
void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb)
{
struct p80211_frmmeta *meta;
--
1.9.1
--
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