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qcacmn: Introduce new QDF API's to handle skb and net dev requirements

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Introduce new QDF API's to handle skb and net dev handling in
os abstract code.

Change-Id: If5a460df2c6c1b4068909fed6e5b3036623c2093
CRs-Fixed: 3164916
This commit is contained in:
Karthik Kantamneni
2022-03-22 11:19:45 +05:30
committed by Madan Koyyalamudi
parent ec906c0387
commit 6380170e35
10 changed files with 399 additions and 2 deletions
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68
qdf/linux/src/qdf_nbuf.c
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@@ -28,6 +28,7 @@
#include <linux/skbuff.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/inetdevice.h>
#include <qdf_atomic.h>
#include <qdf_debugfs.h>
#include <qdf_lock.h>
@@ -2465,6 +2466,73 @@ bool __qdf_nbuf_is_bcast_pkt(qdf_nbuf_t nbuf)
}
qdf_export_symbol(__qdf_nbuf_is_bcast_pkt);
/**
* __qdf_nbuf_is_mcast_replay() - is multicast replay packet
* @nbuf - sk buff
*
* Return: true if packet is multicast replay
* false otherwise
*/
bool __qdf_nbuf_is_mcast_replay(qdf_nbuf_t nbuf)
{
struct ethhdr *eh = (struct ethhdr *)qdf_nbuf_data(nbuf);
if (unlikely(nbuf->pkt_type == PACKET_MULTICAST)) {
if (unlikely(ether_addr_equal(eh->h_source,
nbuf->dev->dev_addr)))
return true;
}
return false;
}
/**
* __qdf_nbuf_is_arp_local() - check if local or non local arp
* @skb: pointer to sk_buff
*
* Return: true if local arp or false otherwise.
*/
bool __qdf_nbuf_is_arp_local(struct sk_buff *skb)
{
struct arphdr *arp;
struct in_ifaddr **ifap = NULL;
struct in_ifaddr *ifa = NULL;
struct in_device *in_dev;
unsigned char *arp_ptr;
__be32 tip;
arp = (struct arphdr *)skb->data;
if (arp->ar_op == htons(ARPOP_REQUEST)) {
/* if fail to acquire rtnl lock, assume it's local arp */
if (!rtnl_trylock())
return true;
in_dev = __in_dev_get_rtnl(skb->dev);
if (in_dev) {
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
if (!strcmp(skb->dev->name, ifa->ifa_label))
break;
}
}
if (ifa && ifa->ifa_local) {
arp_ptr = (unsigned char *)(arp + 1);
arp_ptr += (skb->dev->addr_len + 4 +
skb->dev->addr_len);
memcpy(&tip, arp_ptr, 4);
qdf_debug("ARP packet: local IP: %x dest IP: %x",
ifa->ifa_local, tip);
if (ifa->ifa_local == tip) {
rtnl_unlock();
return true;
}
}
rtnl_unlock();
}
return false;
}
#ifdef NBUF_MEMORY_DEBUG
static spinlock_t g_qdf_net_buf_track_lock[QDF_NET_BUF_TRACK_MAX_SIZE];