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AP: Add multicast-to-unicast conversion send for "x_snoop"

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Multicast-to-unicast conversion send will be needed in various part of
Proxy ARP and DGAF Disable.

Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
This commit is contained in:
Kyeyoon Park 2014-10-31 22:15:19 -07:00 committed by Jouni Malinen
parent ed4ddb6d77
commit 5c58944d08
2 changed files with 38 additions and 0 deletions
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28
src/ap/x_snoop.c
View file

@ -10,6 +10,7 @@
#include "utils/common.h"
#include "hostapd.h"
#include "sta_info.h"
#include "ap_drv_ops.h"
#include "x_snoop.h"
@ -83,6 +84,33 @@ x_snoop_get_l2_packet(struct hostapd_data *hapd,
}
void x_snoop_mcast_to_ucast_convert_send(struct hostapd_data *hapd,
struct sta_info *sta, u8 *buf,
size_t len)
{
int res;
u8 addr[ETH_ALEN];
u8 *dst_addr = buf;
if (!(dst_addr[0] & 0x01))
return;
/* save the multicast destination address for restoring it later */
os_memcpy(addr, buf, ETH_ALEN);
os_memcpy(buf, sta->addr, ETH_ALEN);
res = l2_packet_send(hapd->sock_dhcp, NULL, 0, buf, len);
if (res) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to send mcast to ucast converted packet to "
MACSTR, MAC2STR(sta->addr));
}
/* restore the multicast destination address */
os_memcpy(buf, addr, ETH_ALEN);
}
void x_snoop_deinit(struct hostapd_data *hapd)
{
hostapd_drv_br_set_net_param(hapd, DRV_BR_NET_PARAM_GARP_ACCEPT, 0);

10
src/ap/x_snoop.h
View file

@ -19,6 +19,9 @@ x_snoop_get_l2_packet(struct hostapd_data *hapd,
void (*handler)(void *ctx, const u8 *src_addr,
const u8 *buf, size_t len),
enum l2_packet_filter_type type);
void x_snoop_mcast_to_ucast_convert_send(struct hostapd_data *hapd,
struct sta_info *sta, u8 *buf,
size_t len);
void x_snoop_deinit(struct hostapd_data *hapd);
#else /* CONFIG_PROXYARP */
@ -37,6 +40,13 @@ x_snoop_get_l2_packet(struct hostapd_data *hapd,
return NULL;
}
static inline void
x_snoop_mcast_to_ucast_convert_send(struct hostapd_data *hapd,
struct sta_info *sta, void *buf,
size_t len)
{
}
static inline void x_snoop_deinit(struct hostapd_data *hapd)
{
}