/*----------------------------------------------------------------
* p80211skb_rxmeta_detach
*
* Disconnects the frmmeta and rxmeta from an skb.
*
* Arguments:
* wlandev The wlandev this skb belongs to.
* skb The skb we're attaching to.
*
* Returns:
* 0 on success, non-zero otherwise
*
* 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 */
pr_debug("Called w/ null skb.\n");
goto exit;
}
frmmeta = P80211SKB_FRMMETA(skb);
if (frmmeta == NULL) { /* no magic */
pr_debug("Called w/ bad frmmeta magic.\n");
goto exit;
}
rxmeta = frmmeta->rx;
if (rxmeta == NULL) { /* bad meta ptr */
pr_debug("Called w/ bad rxmeta ptr.\n");
goto exit;
}
/* Free rxmeta */
kfree(rxmeta);
/* Clear skb->cb */
memset(skb->cb, 0, sizeof(skb->cb));
exit:
return;
}
/*----------------------------------------------------------------
* p80211skb_free
*
* Frees an entire p80211skb by checking and freeing the meta struct
* and then freeing the skb.
*
* Arguments:
* wlandev The wlandev this skb belongs to.
* skb The skb we're attaching to.
*
* Returns:
* 0 on success, non-zero otherwise
*
* 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;
meta = P80211SKB_FRMMETA(skb);
if (meta && meta->rx)
p80211skb_rxmeta_detach(skb);
else
;
dev_kfree_skb(skb);
return;
}
/*----------------------------------------------------------------
* p80211skb_free
*
* Frees an entire p80211skb by checking and freeing the meta struct
* and then freeing the skb.
*
* Arguments:
* wlandev The wlandev this skb belongs to.
* skb The skb we're attaching to.
*
* Returns:
* 0 on success, non-zero otherwise
*
* Call context:
* May be called in interrupt or non-interrupt context
----------------------------------------------------------------*/
void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb)
{
p80211_frmmeta_t *meta;
meta = P80211SKB_FRMMETA(skb);
if (meta && meta->rx)
p80211skb_rxmeta_detach(skb);
else
printk(KERN_ERR "Freeing an skb (%p) w/ no frmmeta.\n", skb);
dev_kfree_skb(skb);
return;
}
