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low_level_input: allow multicast traffic, filter out feedback packets (with src MAC == my MAC - limitation in winpcap); use LINK_STATS_INC instead of #if LINK_STATS

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This commit is contained in:
goldsimon 2007-12-02 15:30:46 +00:00
parent ea3f796c6c
commit 4c51f02bcf
1 changed files with 9 additions and 13 deletions
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22
ports/win32/pktif.c
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@ -165,9 +165,7 @@ low_level_output(struct netif *ethernetif, struct pbuf *p)
return ERR_BUF;
}
#if LINK_STATS
lwip_stats.link.xmit++;
#endif /* LINK_STATS */
LINK_STATS_INC(link.xmit);
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
@ -193,9 +191,11 @@ low_level_input(struct netif *netif)
}
ethhdr = (struct eth_hdr*)cur_packet;
/* MAC filter: only let my MAC or broadcast through */
if ((memcmp(&ethhdr->dest, &netif->hwaddr, ETHARP_HWADDR_LEN)) &&
(memcmp(&ethhdr->dest, &broadcastaddr, ETHARP_HWADDR_LEN))) {
/* MAC filter: only let my MAC or non-unicast through */
if (((memcmp(&ethhdr->dest, &netif->hwaddr, ETHARP_HWADDR_LEN)) &&
((ethhdr->dest.addr[0] & 1) == 0)) ||
/* and don't let feedback packets through (limitaion in winpcap?) */
!memcmp(&ethhdr->src, netif->hwaddr, 6)) {
/* acknowledge that packet has been read(); */
cur_length=0;
return NULL;
@ -224,16 +224,12 @@ low_level_input(struct netif *netif)
}
/* acknowledge that packet has been read(); */
cur_length = 0;
#if LINK_STATS
lwip_stats.link.recv++;
#endif /* LINK_STATS */
LINK_STATS_INC(link.recv);
} else {
/* drop packet(); */
cur_length = 0;
#if LINK_STATS
lwip_stats.link.memerr++;
lwip_stats.link.drop++;
#endif /* LINK_STATS */
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
}
return p;