static int Syslog_FormatIPHeaderLog(OpSyslog_Data *data, Packet *p)
{
unsigned int s, d, proto, ver, hlen, tos, len, id, off, ttl, csum;
s=d=proto=ver=hlen=tos=len=id=off=ttl=csum=0;
if(p->iph)
{
if(p->iph->ip_src.s_addr)
s = ntohl( p->iph->ip_src.s_addr);
if(p->iph->ip_dst.s_addr)
d = ntohl( p->iph->ip_dst.s_addr);
if(p->iph->ip_proto)
proto = p->iph->ip_proto;
if(IP_VER(p->iph))
ver = IP_VER(p->iph);
if(IP_HLEN(p->iph))
ver = IP_HLEN(p->iph);
if(p->iph->ip_tos)
tos = p->iph->ip_tos;
if(p->iph->ip_len)
len = ntohs(p->iph->ip_len);
if(p->iph->ip_id)
id = ntohs(p->iph->ip_id);
if(p->iph->ip_off)
off = (p->iph->ip_off);
if(p->iph->ip_ttl)
ttl = (p->iph->ip_ttl);
if(p->iph->ip_csum)
ttl = htons(p->iph->ip_csum);
}
if( (data->format_current_pos += snprintf(data->formatBuffer,SYSLOG_MAX_QUERY_SIZE,
"%u%c%u%c%u%c%u%c%u%c%u%c%u%c%u%c%u%c%u%c%u%c%u",
proto,data->field_separators,
s, data->field_separators,
d, data->field_separators,
ver, data->field_separators,
hlen, data->field_separators,
tos, data->field_separators,
len, data->field_separators,
id, data->field_separators,
#if defined(WORDS_BIGENDIAN)
((off & 0xE000) >> 13),data->field_separators,
htons(off & 0x1FFF),data->field_separators,
#else
((off & 0x00E0) >> 5),data->field_separators,
htons(off & 0xFF1F), data->field_separators,
#endif
ttl,data->field_separators,
csum)) >= SYSLOG_MAX_QUERY_SIZE)
{
/* XXX */
return 1;
}
return OpSyslog_Concat(data);
}
int InsertIPData(OpAcidDb_Data *op_data, Packet *p)
{
if(op_data->detail)
{
if(snprintf(sql_buffer, MAX_QUERY_SIZE,
"INSERT INTO iphdr(sid, cid, ip_src, ip_dst, ip_proto, "
"ip_ver, ip_hlen, ip_tos, ip_len, ip_id, ip_flags, ip_off, "
"ip_ttl, ip_csum) VALUES('%u', '%u', '%u', '%u', '%u', "
"'%u', '%u', '%u', '%u', '%u', '%u', '%u', "
"'%u', '%u')",
op_data->sensor_id, op_data->event_id,
ntohl(p->iph->ip_src.s_addr), ntohl(p->iph->ip_dst.s_addr),
p->iph->ip_proto, IP_VER(p->iph), IP_HLEN(p->iph),
p->iph->ip_tos, ntohs(p->iph->ip_len), ntohs(p->iph->ip_id),
#if defined(WORDS_BIGENDIAN)
((p->iph->ip_off & 0xE000) >> 13),
htons(p->iph->ip_off & 0x1FFF),
#else
((p->iph->ip_off & 0x00E0) >> 5),
htons(p->iph->ip_off & 0xFF1F),
#endif
p->iph->ip_ttl,
htons(p->iph->ip_csum)) < MAX_QUERY_SIZE)
{
Insert(op_data, sql_buffer, NULL); /* XXX: Error Checking */
}
/* XXX: IP Options not handled */
}
else
{
if(snprintf(sql_buffer, MAX_QUERY_SIZE,
void print_packet(const struct sniff_ethernet *eth,
const struct sniff_ip *ip,
const struct sniff_tcp *tcp)
{
/* Ethernet */
printf("DADDR:"); print_ethernet_addr(eth->dest_host);
printf("SADDR:"); print_ethernet_addr(eth->src_host);
printf("TYPE:%u\n", eth->ether_type);
/* IP */
printf( "\tVERSION: %u\n"
"\tHEADER LENGTH: %u\n"
"\tTOTAL LENGTH: %u\n"
"\tTOS: %u\n"
"\tTTL: %u\n",
IP_VER(ip),
IP_HL(ip),
ip->ip_len,
ip->ip_tos,
ip->ip_ttl);
/* TCP */
printf( "\t\tSPORT: %u\n"
"\t\tDPORT: %u\n"
"\t\tSEQ: %u\n"
"\t\tACK: %u\n",
ntohs(tcp->th_sport),
ntohs(tcp->th_dport),
tcp->th_seq,
tcp->th_ack);
}
bool
dhd_tcpdata_info_get(dhd_pub_t *dhdp, void *pkt)
{
uint8 *ether_hdr; /* Ethernet header of the new packet */
uint16 ether_type; /* Ethernet type of the new packet */
uint8 *ip_hdr; /* IP header of the new packet */
uint8 *tcp_hdr; /* TCP header of the new packet */
uint32 ip_hdr_len; /* IP header length of the new packet */
uint32 cur_framelen;
uint16 ip_total_len; /* Total length of IP packet for the new packet */
uint32 tcp_hdr_len; /* TCP header length of the new packet */
uint32 tcp_seq_num; /* TCP sequence number of the new packet */
uint16 tcp_data_len; /* TCP DATA length that excludes IP and TCP headers */
uint32 end_tcp_seq_num; /* TCP seq number of the last byte in the new packet */
tcpack_sup_module_t *tcpack_sup_mod;
tcpdata_info_t *tcpdata_info = NULL;
tdata_psh_info_t *tdata_psh_info;
int i;
bool ret = FALSE;
if (dhdp->tcpack_sup_mode != TCPACK_SUP_DELAYTX)
goto exit;
ether_hdr = PKTDATA(dhdp->osh, pkt);
cur_framelen = PKTLEN(dhdp->osh, pkt);
ether_type = ether_hdr[12] << 8 | ether_hdr[13];
if (ether_type != ETHER_TYPE_IP) {
DHD_TRACE(("%s %d: Not a IP packet 0x%x\n",
__FUNCTION__, __LINE__, ether_type));
goto exit;
}
DHD_TRACE(("%s %d: IP pkt! 0x%x\n", __FUNCTION__, __LINE__, ether_type));
ip_hdr = ether_hdr + ETHER_HDR_LEN;
cur_framelen -= ETHER_HDR_LEN;
ASSERT(cur_framelen >= IPV4_MIN_HEADER_LEN);
ip_hdr_len = IPV4_HLEN(ip_hdr);
if (IP_VER(ip_hdr) != IP_VER_4 || IPV4_PROT(ip_hdr) != IP_PROT_TCP) {
DHD_TRACE(("%s %d: Not IPv4 nor TCP! ip ver %d, prot %d\n",
__FUNCTION__, __LINE__, IP_VER(ip_hdr), IPV4_PROT(ip_hdr)));
goto exit;
}
tcp_hdr = ip_hdr + ip_hdr_len;
cur_framelen -= ip_hdr_len;
ASSERT(cur_framelen >= TCP_MIN_HEADER_LEN);
DHD_TRACE(("%s %d: TCP pkt!\n", __FUNCTION__, __LINE__));
ip_total_len = ntoh16_ua(&ip_hdr[IPV4_PKTLEN_OFFSET]);
tcp_hdr_len = 4 * TCP_HDRLEN(tcp_hdr[TCP_HLEN_OFFSET]);
/* This packet is mere TCP ACK, so do nothing */
if (ip_total_len == ip_hdr_len + tcp_hdr_len) {
DHD_TRACE(("%s %d: Do nothing for no data TCP ACK\n", __FUNCTION__, __LINE__));
goto exit;
}
ASSERT(ip_total_len > ip_hdr_len + tcp_hdr_len);
if ((tcp_hdr[TCP_FLAGS_OFFSET] & TCP_FLAG_PSH) == 0) {
DHD_TRACE(("%s %d: Not interested TCP DATA packet\n", __FUNCTION__, __LINE__));
goto exit;
}
DHD_TRACE(("%s %d: TCP DATA with nonzero DATA length"
" IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR" TCP port %d %d, flag 0x%x\n",
__FUNCTION__, __LINE__,
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&tcp_hdr[TCP_DEST_PORT_OFFSET]),
tcp_hdr[TCP_FLAGS_OFFSET]));
dhd_os_tcpacklock(dhdp);
tcpack_sup_mod = dhdp->tcpack_sup_module;
if (!tcpack_sup_mod) {
DHD_ERROR(("%s %d: tcpack suppress module NULL!!\n", __FUNCTION__, __LINE__));
ret = BCME_ERROR;
dhd_os_tcpackunlock(dhdp);
goto exit;
}
/* Look for tcpdata_info that has the same ip src/dst addrs and tcp src/dst ports */
i = 0;
while (i < tcpack_sup_mod->tcpdata_info_cnt) {
tcpdata_info_t *tdata_info_tmp = &tcpack_sup_mod->tcpdata_info_tbl[i];
uint32 now_in_ms = OSL_SYSUPTIME();
DHD_TRACE(("%s %d: data info[%d], IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR
" TCP port %d %d\n", __FUNCTION__, __LINE__, i,
IPV4_ADDR_TO_STR(ntoh32_ua(tdata_info_tmp->src_ip_addr)),
IPV4_ADDR_TO_STR(ntoh32_ua(tdata_info_tmp->dst_ip_addr)),
ntoh16_ua(tdata_info_tmp->src_tcp_port),
ntoh16_ua(tdata_info_tmp->dst_tcp_port)));
/* If both IP address and TCP port number match, we found it so break. */
if (memcmp(&ip_hdr[IPV4_SRC_IP_OFFSET],
tdata_info_tmp->src_ip_addr, IPV4_ADDR_LEN * 2) == 0 &&
memcmp(&tcp_hdr[TCP_SRC_PORT_OFFSET],
tdata_info_tmp->src_tcp_port, TCP_PORT_LEN * 2) == 0) {
tcpdata_info = tdata_info_tmp;
tcpdata_info->last_used_time = now_in_ms;
break;
}
if (now_in_ms - tdata_info_tmp->last_used_time > TCPDATA_INFO_TIMEOUT) {
tdata_psh_info_t *tdata_psh_info_tmp;
tcpdata_info_t *last_tdata_info;
while ((tdata_psh_info_tmp = tdata_info_tmp->tdata_psh_info_head)) {
tdata_info_tmp->tdata_psh_info_head = tdata_psh_info_tmp->next;
tdata_psh_info_tmp->next = NULL;
DHD_TRACE(("%s %d: Clean tdata_psh_info(end_seq %u)!\n",
__FUNCTION__, __LINE__, tdata_psh_info_tmp->end_seq));
_tdata_psh_info_pool_enq(tcpack_sup_mod, tdata_psh_info_tmp);
}
#ifdef DHDTCPACK_SUP_DBG
DHD_ERROR(("%s %d: PSH INFO ENQ %d\n",
__FUNCTION__, __LINE__, tcpack_sup_mod->psh_info_enq_num));
#endif /* DHDTCPACK_SUP_DBG */
tcpack_sup_mod->tcpdata_info_cnt--;
ASSERT(tcpack_sup_mod->tcpdata_info_cnt >= 0);
last_tdata_info =
&tcpack_sup_mod->tcpdata_info_tbl[tcpack_sup_mod->tcpdata_info_cnt];
if (i < tcpack_sup_mod->tcpdata_info_cnt) {
ASSERT(last_tdata_info != tdata_info_tmp);
bcopy(last_tdata_info, tdata_info_tmp, sizeof(tcpdata_info_t));
}
bzero(last_tdata_info, sizeof(tcpdata_info_t));
DHD_TRACE(("%s %d: tcpdata_info(idx %d) is aged out. ttl cnt is now %d\n",
__FUNCTION__, __LINE__, i, tcpack_sup_mod->tcpdata_info_cnt));
/* Don't increase "i" here, so that the prev last tcpdata_info is checked */
} else
i++;
}
tcp_seq_num = ntoh32_ua(&tcp_hdr[TCP_SEQ_NUM_OFFSET]);
tcp_data_len = ip_total_len - ip_hdr_len - tcp_hdr_len;
end_tcp_seq_num = tcp_seq_num + tcp_data_len;
if (tcpdata_info == NULL) {
ASSERT(i == tcpack_sup_mod->tcpdata_info_cnt);
if (i >= TCPDATA_INFO_MAXNUM) {
DHD_TRACE(("%s %d: tcp_data_info_tbl FULL! %d %d"
" IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR" TCP port %d %d\n",
__FUNCTION__, __LINE__, i, tcpack_sup_mod->tcpdata_info_cnt,
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&tcp_hdr[TCP_DEST_PORT_OFFSET])));
dhd_os_tcpackunlock(dhdp);
goto exit;
}
tcpdata_info = &tcpack_sup_mod->tcpdata_info_tbl[i];
/* No TCP flow with the same IP addr and TCP port is found
* in tcp_data_info_tbl. So add this flow to the table.
*/
DHD_TRACE(("%s %d: Add data info to tbl[%d]: IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR
" TCP port %d %d\n",
__FUNCTION__, __LINE__, tcpack_sup_mod->tcpdata_info_cnt,
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&tcp_hdr[TCP_DEST_PORT_OFFSET])));
bcopy(&ip_hdr[IPV4_SRC_IP_OFFSET], tcpdata_info->src_ip_addr,
IPV4_ADDR_LEN * 2);
bcopy(&tcp_hdr[TCP_SRC_PORT_OFFSET], tcpdata_info->src_tcp_port,
TCP_PORT_LEN * 2);
tcpdata_info->last_used_time = OSL_SYSUPTIME();
tcpack_sup_mod->tcpdata_info_cnt++;
}
ASSERT(tcpdata_info != NULL);
tdata_psh_info = _tdata_psh_info_pool_deq(tcpack_sup_mod);
#ifdef DHDTCPACK_SUP_DBG
DHD_TRACE(("%s %d: PSH INFO ENQ %d\n",
__FUNCTION__, __LINE__, tcpack_sup_mod->psh_info_enq_num));
#endif /* DHDTCPACK_SUP_DBG */
if (tdata_psh_info == NULL) {
DHD_ERROR(("%s %d: No more free tdata_psh_info!!\n", __FUNCTION__, __LINE__));
ret = BCME_ERROR;
dhd_os_tcpackunlock(dhdp);
goto exit;
}
tdata_psh_info->end_seq = end_tcp_seq_num;
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[4]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
DHD_TRACE(("%s %d: TCP PSH DATA recvd! end seq %u\n",
__FUNCTION__, __LINE__, tdata_psh_info->end_seq));
ASSERT(tdata_psh_info->next == NULL);
if (tcpdata_info->tdata_psh_info_head == NULL)
tcpdata_info->tdata_psh_info_head = tdata_psh_info;
else {
ASSERT(tcpdata_info->tdata_psh_info_tail);
tcpdata_info->tdata_psh_info_tail->next = tdata_psh_info;
}
tcpdata_info->tdata_psh_info_tail = tdata_psh_info;
dhd_os_tcpackunlock(dhdp);
exit:
return ret;
}
bool
dhd_tcpack_suppress(dhd_pub_t *dhdp, void *pkt)
{
uint8 *new_ether_hdr; /* Ethernet header of the new packet */
uint16 new_ether_type; /* Ethernet type of the new packet */
uint8 *new_ip_hdr; /* IP header of the new packet */
uint8 *new_tcp_hdr; /* TCP header of the new packet */
uint32 new_ip_hdr_len; /* IP header length of the new packet */
uint32 cur_framelen;
uint32 new_tcp_ack_num; /* TCP acknowledge number of the new packet */
uint16 new_ip_total_len; /* Total length of IP packet for the new packet */
uint32 new_tcp_hdr_len; /* TCP header length of the new packet */
tcpack_sup_module_t *tcpack_sup_mod;
tcpack_info_t *tcpack_info_tbl;
int i;
bool ret = FALSE;
bool set_dotxinrx = TRUE;
if (dhdp->tcpack_sup_mode == TCPACK_SUP_OFF)
goto exit;
new_ether_hdr = PKTDATA(dhdp->osh, pkt);
cur_framelen = PKTLEN(dhdp->osh, pkt);
if (cur_framelen < TCPACKSZMIN || cur_framelen > TCPACKSZMAX) {
DHD_TRACE(("%s %d: Too short or long length %d to be TCP ACK\n",
__FUNCTION__, __LINE__, cur_framelen));
goto exit;
}
new_ether_type = new_ether_hdr[12] << 8 | new_ether_hdr[13];
if (new_ether_type != ETHER_TYPE_IP) {
DHD_TRACE(("%s %d: Not a IP packet 0x%x\n",
__FUNCTION__, __LINE__, new_ether_type));
goto exit;
}
DHD_TRACE(("%s %d: IP pkt! 0x%x\n", __FUNCTION__, __LINE__, new_ether_type));
new_ip_hdr = new_ether_hdr + ETHER_HDR_LEN;
cur_framelen -= ETHER_HDR_LEN;
ASSERT(cur_framelen >= IPV4_MIN_HEADER_LEN);
new_ip_hdr_len = IPV4_HLEN(new_ip_hdr);
if (IP_VER(new_ip_hdr) != IP_VER_4 || IPV4_PROT(new_ip_hdr) != IP_PROT_TCP) {
DHD_TRACE(("%s %d: Not IPv4 nor TCP! ip ver %d, prot %d\n",
__FUNCTION__, __LINE__, IP_VER(new_ip_hdr), IPV4_PROT(new_ip_hdr)));
goto exit;
}
new_tcp_hdr = new_ip_hdr + new_ip_hdr_len;
cur_framelen -= new_ip_hdr_len;
ASSERT(cur_framelen >= TCP_MIN_HEADER_LEN);
DHD_TRACE(("%s %d: TCP pkt!\n", __FUNCTION__, __LINE__));
/* is it an ack ? Allow only ACK flag, not to suppress others. */
if (new_tcp_hdr[TCP_FLAGS_OFFSET] != TCP_FLAG_ACK) {
DHD_TRACE(("%s %d: Do not touch TCP flag 0x%x\n",
__FUNCTION__, __LINE__, new_tcp_hdr[TCP_FLAGS_OFFSET]));
goto exit;
}
new_ip_total_len = ntoh16_ua(&new_ip_hdr[IPV4_PKTLEN_OFFSET]);
new_tcp_hdr_len = 4 * TCP_HDRLEN(new_tcp_hdr[TCP_HLEN_OFFSET]);
/* This packet has TCP data, so just send */
if (new_ip_total_len > new_ip_hdr_len + new_tcp_hdr_len) {
DHD_TRACE(("%s %d: Do nothing for TCP DATA\n", __FUNCTION__, __LINE__));
goto exit;
}
ASSERT(new_ip_total_len == new_ip_hdr_len + new_tcp_hdr_len);
new_tcp_ack_num = ntoh32_ua(&new_tcp_hdr[TCP_ACK_NUM_OFFSET]);
DHD_TRACE(("%s %d: TCP ACK with zero DATA length"
" IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR" TCP port %d %d\n",
__FUNCTION__, __LINE__,
IPV4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&new_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&new_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* Look for tcp_ack_info that has the same ip src/dst addrs and tcp src/dst ports */
dhd_os_tcpacklock(dhdp);
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
counter_printlog(&tack_tbl);
tack_tbl.cnt[0]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
tcpack_sup_mod = dhdp->tcpack_sup_module;
tcpack_info_tbl = tcpack_sup_mod->tcpack_info_tbl;
if (!tcpack_sup_mod) {
DHD_ERROR(("%s %d: tcpack suppress module NULL!!\n", __FUNCTION__, __LINE__));
ret = BCME_ERROR;
dhd_os_tcpackunlock(dhdp);
goto exit;
}
if (dhd_tcpdata_psh_acked(dhdp, new_ip_hdr, new_tcp_hdr, new_tcp_ack_num)) {
/* This TCPACK is ACK to TCPDATA PSH pkt, so keep set_dotxinrx TRUE */
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[5]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
} else
set_dotxinrx = FALSE;
for (i = 0; i < tcpack_sup_mod->tcpack_info_cnt; i++) {
void *oldpkt; /* TCPACK packet that is already in txq or DelayQ */
uint8 *old_ether_hdr, *old_ip_hdr, *old_tcp_hdr;
uint32 old_ip_hdr_len, old_tcp_hdr_len;
uint32 old_tcpack_num; /* TCP ACK number of old TCPACK packet in Q */
if ((oldpkt = tcpack_info_tbl[i].pkt_in_q) == NULL) {
DHD_ERROR(("%s %d: Unexpected error!! cur idx %d, ttl cnt %d\n",
__FUNCTION__, __LINE__, i, tcpack_sup_mod->tcpack_info_cnt));
break;
}
if (PKTDATA(dhdp->osh, oldpkt) == NULL) {
DHD_ERROR(("%s %d: oldpkt data NULL!! cur idx %d, ttl cnt %d\n",
__FUNCTION__, __LINE__, i, tcpack_sup_mod->tcpack_info_cnt));
break;
}
old_ether_hdr = tcpack_info_tbl[i].pkt_ether_hdr;
old_ip_hdr = old_ether_hdr + ETHER_HDR_LEN;
old_ip_hdr_len = IPV4_HLEN(old_ip_hdr);
old_tcp_hdr = old_ip_hdr + old_ip_hdr_len;
old_tcp_hdr_len = 4 * TCP_HDRLEN(old_tcp_hdr[TCP_HLEN_OFFSET]);
DHD_TRACE(("%s %d: oldpkt %p[%d], IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR
" TCP port %d %d\n", __FUNCTION__, __LINE__, oldpkt, i,
IPV4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&old_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&old_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* If either of IP address or TCP port number does not match, skip. */
if (memcmp(&new_ip_hdr[IPV4_SRC_IP_OFFSET],
&old_ip_hdr[IPV4_SRC_IP_OFFSET], IPV4_ADDR_LEN * 2) ||
memcmp(&new_tcp_hdr[TCP_SRC_PORT_OFFSET],
&old_tcp_hdr[TCP_SRC_PORT_OFFSET], TCP_PORT_LEN * 2))
continue;
old_tcpack_num = ntoh32_ua(&old_tcp_hdr[TCP_ACK_NUM_OFFSET]);
if (IS_TCPSEQ_GT(new_tcp_ack_num, old_tcpack_num)) {
/* New packet has higher TCP ACK number, so it replaces the old packet */
if (new_ip_hdr_len == old_ip_hdr_len &&
new_tcp_hdr_len == old_tcp_hdr_len) {
ASSERT(memcmp(new_ether_hdr, old_ether_hdr, ETHER_HDR_LEN) == 0);
bcopy(new_ip_hdr, old_ip_hdr, new_ip_total_len);
PKTFREE(dhdp->osh, pkt, FALSE);
DHD_TRACE(("%s %d: TCP ACK replace %u -> %u\n",
__FUNCTION__, __LINE__, old_tcpack_num, new_tcp_ack_num));
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[2]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
ret = TRUE;
} else {
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[6]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
DHD_TRACE(("%s %d: lenth mismatch %d != %d || %d != %d"
" ACK %u -> %u\n", __FUNCTION__, __LINE__,
new_ip_hdr_len, old_ip_hdr_len,
new_tcp_hdr_len, old_tcp_hdr_len,
old_tcpack_num, new_tcp_ack_num));
}
} else if (new_tcp_ack_num == old_tcpack_num) {
set_dotxinrx = TRUE;
/* TCPACK retransmission */
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[3]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
} else {
DHD_TRACE(("%s %d: ACK number reverse old %u(0x%p) new %u(0x%p)\n",
__FUNCTION__, __LINE__, old_tcpack_num, oldpkt,
new_tcp_ack_num, pkt));
}
dhd_os_tcpackunlock(dhdp);
goto exit;
}
if (i == tcpack_sup_mod->tcpack_info_cnt && i < TCPACK_INFO_MAXNUM) {
/* No TCPACK packet with the same IP addr and TCP port is found
* in tcp_ack_info_tbl. So add this packet to the table.
*/
DHD_TRACE(("%s %d: Add pkt 0x%p(ether_hdr 0x%p) to tbl[%d]\n",
__FUNCTION__, __LINE__, pkt, new_ether_hdr,
tcpack_sup_mod->tcpack_info_cnt));
tcpack_info_tbl[tcpack_sup_mod->tcpack_info_cnt].pkt_in_q = pkt;
tcpack_info_tbl[tcpack_sup_mod->tcpack_info_cnt].pkt_ether_hdr = new_ether_hdr;
tcpack_sup_mod->tcpack_info_cnt++;
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
tack_tbl.cnt[1]++;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
} else {
ASSERT(i == tcpack_sup_mod->tcpack_info_cnt);
DHD_TRACE(("%s %d: No empty tcp ack info tbl\n",
__FUNCTION__, __LINE__));
}
dhd_os_tcpackunlock(dhdp);
exit:
/* Unless TCPACK_SUP_DELAYTX, dotxinrx is alwasy TRUE, so no need to set here */
if (dhdp->tcpack_sup_mode == TCPACK_SUP_DELAYTX && set_dotxinrx)
dhd_bus_set_dotxinrx(dhdp->bus, TRUE);
return ret;
}
pkt_frag_t pkt_frag_info(osl_t *osh, void *p)
{
uint8 *frame;
int length;
uint8 *pt; /* Pointer to type field */
uint16 ethertype;
struct ipv4_hdr *iph; /* IP frame pointer */
int ipl; /* IP frame length */
uint16 iph_frag;
ASSERT(osh && p);
frame = PKTDATA(osh, p);
length = PKTLEN(osh, p);
/* Process Ethernet II or SNAP-encapsulated 802.3 frames */
if (length < ETHER_HDR_LEN) {
DHD_INFO(("%s: short eth frame (%d)\n", __FUNCTION__, length));
return DHD_PKT_FRAG_NONE;
} else if (ntoh16(*(uint16 *)(frame + ETHER_TYPE_OFFSET)) >= ETHER_TYPE_MIN) {
/* Frame is Ethernet II */
pt = frame + ETHER_TYPE_OFFSET;
} else if (length >= ETHER_HDR_LEN + SNAP_HDR_LEN + ETHER_TYPE_LEN &&
!bcmp(llc_snap_hdr, frame + ETHER_HDR_LEN, SNAP_HDR_LEN)) {
pt = frame + ETHER_HDR_LEN + SNAP_HDR_LEN;
} else {
DHD_INFO(("%s: non-SNAP 802.3 frame\n", __FUNCTION__));
return DHD_PKT_FRAG_NONE;
}
ethertype = ntoh16(*(uint16 *)pt);
/* Skip VLAN tag, if any */
if (ethertype == ETHER_TYPE_8021Q) {
pt += VLAN_TAG_LEN;
if (pt + ETHER_TYPE_LEN > frame + length) {
DHD_INFO(("%s: short VLAN frame (%d)\n", __FUNCTION__, length));
return DHD_PKT_FRAG_NONE;
}
ethertype = ntoh16(*(uint16 *)pt);
}
if (ethertype != ETHER_TYPE_IP) {
DHD_INFO(("%s: non-IP frame (ethertype 0x%x, length %d)\n",
__FUNCTION__, ethertype, length));
return DHD_PKT_FRAG_NONE;
}
iph = (struct ipv4_hdr *)(pt + ETHER_TYPE_LEN);
ipl = (uint)(length - (pt + ETHER_TYPE_LEN - frame));
/* We support IPv4 only */
if ((ipl < IPV4_OPTIONS_OFFSET) || (IP_VER(iph) != IP_VER_4)) {
DHD_INFO(("%s: short frame (%d) or non-IPv4\n", __FUNCTION__, ipl));
return DHD_PKT_FRAG_NONE;
}
iph_frag = ntoh16(iph->frag);
if (iph_frag & IPV4_FRAG_DONT) {
return DHD_PKT_FRAG_NONE;
} else if ((iph_frag & IPV4_FRAG_MORE) == 0) {
return DHD_PKT_FRAG_LAST;
} else {
return (iph_frag & IPV4_FRAG_OFFSET_MASK)? DHD_PKT_FRAG_CONT : DHD_PKT_FRAG_FIRST;
}
}
static int packet_to_data(Packet *p, Event *event, idmef_alert_t *alert)
{
int i;
if ( ! p )
return 0;
add_int_data(alert, "snort_rule_sid", event->sig_id);
add_int_data(alert, "snort_rule_rev", event->sig_rev);
if ( p->iph ) {
add_int_data(alert, "ip_ver", IP_VER(p->iph));
add_int_data(alert, "ip_hlen", IP_HLEN(p->iph));
add_int_data(alert, "ip_tos", p->iph->ip_tos);
add_int_data(alert, "ip_len", ntohs(p->iph->ip_len));
add_int_data(alert, "ip_id", ntohs(p->iph->ip_id));
add_int_data(alert, "ip_off", ntohs(p->iph->ip_off));
add_int_data(alert, "ip_ttl", p->iph->ip_ttl);
add_int_data(alert, "ip_proto", p->iph->ip_proto);
add_int_data(alert, "ip_sum", ntohs(p->iph->ip_csum));
for ( i = 0; i < p->ip_option_count; i++ ) {
add_int_data(alert, "ip_option_code", p->ip_options[i].code);
add_byte_data(alert, "ip_option_data", p->ip_options[i].data, p->ip_options[i].len);
}
}
if ( p->tcph ) {
add_int_data(alert, "tcp_seq", ntohl(p->tcph->th_seq));
add_int_data(alert, "tcp_ack", ntohl(p->tcph->th_ack));
add_int_data(alert, "tcp_off", TCP_OFFSET(p->tcph));
add_int_data(alert, "tcp_res", TCP_X2(p->tcph));
add_int_data(alert, "tcp_flags", p->tcph->th_flags);
add_int_data(alert, "tcp_win", ntohs(p->tcph->th_win));
add_int_data(alert, "tcp_sum", ntohs(p->tcph->th_sum));
add_int_data(alert, "tcp_urp", ntohs(p->tcph->th_urp));
for ( i = 0; i < p->tcp_option_count; i++ ) {
add_int_data(alert, "tcp_option_code", p->tcp_options[i].code);
add_byte_data(alert, "tcp_option_data", p->tcp_options[i].data, p->tcp_options[i].len);
}
}
else if ( p->udph ) {
add_int_data(alert, "udp_len", ntohs(p->udph->uh_len));
add_int_data(alert, "udp_sum", ntohs(p->udph->uh_chk));
}
else if ( p->icmph ) {
add_int_data(alert, "icmp_type", p->icmph->type);
add_int_data(alert, "icmp_code", p->icmph->code);
add_int_data(alert, "icmp_sum", ntohs(p->icmph->csum));
switch ( p->icmph->type ) {
case ICMP_ECHO:
case ICMP_ECHOREPLY:
case ICMP_INFO_REQUEST:
case ICMP_INFO_REPLY:
case ICMP_ADDRESS:
case ICMP_TIMESTAMP:
add_int_data(alert, "icmp_id", ntohs(p->icmph->s_icmp_id));
add_int_data(alert, "icmp_seq", ntohs(p->icmph->s_icmp_seq));
break;
case ICMP_ADDRESSREPLY:
add_int_data(alert, "icmp_id", ntohs(p->icmph->s_icmp_id));
add_int_data(alert, "icmp_seq", ntohs(p->icmph->s_icmp_seq));
add_int_data(alert, "icmp_mask", (uint32_t) ntohl(p->icmph->s_icmp_mask));
break;
case ICMP_REDIRECT:
add_string_data(alert, "icmp_gwaddr", inet_ntoa(p->icmph->s_icmp_gwaddr));
break;
case ICMP_ROUTER_ADVERTISE:
add_int_data(alert, "icmp_num_addrs", p->icmph->s_icmp_num_addrs);
add_int_data(alert, "icmp_wpa", p->icmph->s_icmp_wpa);
add_int_data(alert, "icmp_lifetime", ntohs(p->icmph->s_icmp_lifetime));
break;
case ICMP_TIMESTAMPREPLY:
add_int_data(alert, "icmp_id", ntohs(p->icmph->s_icmp_id));
add_int_data(alert, "icmp_seq", ntohs(p->icmph->s_icmp_seq));
add_int_data(alert, "icmp_otime", p->icmph->s_icmp_otime);
add_int_data(alert, "icmp_rtime", p->icmph->s_icmp_rtime);
add_int_data(alert, "icmp_ttime", p->icmph->s_icmp_ttime);
break;
}
}
add_byte_data(alert, "payload", p->data, p->dsize);
return 0;
}
static int event_to_source_target(Packet *p, idmef_alert_t *alert)
{
int ret;
idmef_node_t *node;
idmef_source_t *source;
idmef_target_t *target;
idmef_address_t *address;
idmef_service_t *service;
prelude_string_t *string;
static char saddr[128], daddr[128];
if ( !p )
return 0;
if ( ! p->iph )
return 0;
ret = idmef_alert_new_source(alert, &source, IDMEF_LIST_APPEND);
if ( ret < 0 )
return ret;
if ( pv.interface ) {
ret = idmef_source_new_interface(source, &string);
if ( ret < 0 )
return ret;
prelude_string_set_ref(string, pv.interface);
}
ret = idmef_source_new_service(source, &service);
if ( ret < 0 )
return ret;
if ( p->tcph || p->udph )
idmef_service_set_port(service, p->sp);
idmef_service_set_ip_version(service, IP_VER(p->iph));
idmef_service_set_iana_protocol_number(service, p->iph->ip_proto);
ret = idmef_source_new_node(source, &node);
if ( ret < 0 )
return ret;
ret = idmef_node_new_address(node, &address, IDMEF_LIST_APPEND);
if ( ret < 0 )
return ret;
ret = idmef_address_new_address(address, &string);
if ( ret < 0 )
return ret;
SnortSnprintf(saddr, sizeof(saddr), "%s", inet_ntoa(p->iph->ip_src));
prelude_string_set_ref(string, saddr);
ret = idmef_alert_new_target(alert, &target, IDMEF_LIST_APPEND);
if ( ret < 0 )
return ret;
if ( pv.interface ) {
ret = idmef_target_new_interface(target, &string);
if ( ret < 0 )
return ret;
prelude_string_set_ref(string, pv.interface);
}
ret = idmef_target_new_service(target, &service);
if ( ! ret < 0 )
return ret;
if ( p->tcph || p->udph )
idmef_service_set_port(service, p->dp);
idmef_service_set_ip_version(service, IP_VER(p->iph));
idmef_service_set_iana_protocol_number(service, p->iph->ip_proto);
ret = idmef_target_new_node(target, &node);
if ( ret < 0 )
return ret;
ret = idmef_node_new_address(node, &address, IDMEF_LIST_APPEND);
if ( ret < 0 )
return ret;
ret = idmef_address_new_address(address, &string);
if ( ret < 0 )
return ret;
SnortSnprintf(daddr, sizeof(daddr), "%s", inet_ntoa(p->iph->ip_dst));
prelude_string_set_ref(string, daddr);
return 0;
}
void *
netdev_tnl_ip_extract_tnl_md(struct dp_packet *packet, struct flow_tnl *tnl,
unsigned int *hlen)
{
void *nh;
struct ip_header *ip;
struct ovs_16aligned_ip6_hdr *ip6;
void *l4;
int l3_size;
nh = dp_packet_l3(packet);
ip = nh;
ip6 = nh;
l4 = dp_packet_l4(packet);
if (!nh || !l4) {
return NULL;
}
*hlen = sizeof(struct eth_header);
l3_size = dp_packet_size(packet) -
((char *)nh - (char *)dp_packet_data(packet));
if (IP_VER(ip->ip_ihl_ver) == 4) {
ovs_be32 ip_src, ip_dst;
if (csum(ip, IP_IHL(ip->ip_ihl_ver) * 4)) {
VLOG_WARN_RL(&err_rl, "ip packet has invalid checksum");
return NULL;
}
if (ntohs(ip->ip_tot_len) > l3_size) {
VLOG_WARN_RL(&err_rl, "ip packet is truncated (IP length %d, actual %d)",
ntohs(ip->ip_tot_len), l3_size);
return NULL;
}
if (IP_IHL(ip->ip_ihl_ver) * 4 > sizeof(struct ip_header)) {
VLOG_WARN_RL(&err_rl, "ip options not supported on tunnel packets "
"(%d bytes)", IP_IHL(ip->ip_ihl_ver) * 4);
return NULL;
}
ip_src = get_16aligned_be32(&ip->ip_src);
ip_dst = get_16aligned_be32(&ip->ip_dst);
tnl->ip_src = ip_src;
tnl->ip_dst = ip_dst;
tnl->ip_tos = ip->ip_tos;
tnl->ip_ttl = ip->ip_ttl;
*hlen += IP_HEADER_LEN;
} else if (IP_VER(ip->ip_ihl_ver) == 6) {
ovs_be32 tc_flow = get_16aligned_be32(&ip6->ip6_flow);
memcpy(tnl->ipv6_src.s6_addr, ip6->ip6_src.be16, sizeof ip6->ip6_src);
memcpy(tnl->ipv6_dst.s6_addr, ip6->ip6_dst.be16, sizeof ip6->ip6_dst);
tnl->ip_tos = ntohl(tc_flow) >> 20;
tnl->ip_ttl = ip6->ip6_hlim;
*hlen += IPV6_HEADER_LEN;
} else {
bool
dhd_tcpack_hold(dhd_pub_t *dhdp, void *pkt, int ifidx)
{
uint8 *new_ether_hdr; /* Ethernet header of the new packet */
uint16 new_ether_type; /* Ethernet type of the new packet */
uint8 *new_ip_hdr; /* IP header of the new packet */
uint8 *new_tcp_hdr; /* TCP header of the new packet */
uint32 new_ip_hdr_len; /* IP header length of the new packet */
uint32 cur_framelen;
uint32 new_tcp_ack_num; /* TCP acknowledge number of the new packet */
uint16 new_ip_total_len; /* Total length of IP packet for the new packet */
uint32 new_tcp_hdr_len; /* TCP header length of the new packet */
tcpack_sup_module_t *tcpack_sup_mod;
tcpack_info_t *tcpack_info_tbl;
int i, free_slot = TCPACK_INFO_MAXNUM;
bool hold = FALSE;
unsigned long flags;
if (dhdp->tcpack_sup_mode != TCPACK_SUP_HOLD) {
goto exit;
}
if (dhdp->tcpack_sup_ratio == 1) {
goto exit;
}
new_ether_hdr = PKTDATA(dhdp->osh, pkt);
cur_framelen = PKTLEN(dhdp->osh, pkt);
if (cur_framelen < TCPACKSZMIN || cur_framelen > TCPACKSZMAX) {
DHD_TRACE(("%s %d: Too short or long length %d to be TCP ACK\n",
__FUNCTION__, __LINE__, cur_framelen));
goto exit;
}
new_ether_type = new_ether_hdr[12] << 8 | new_ether_hdr[13];
if (new_ether_type != ETHER_TYPE_IP) {
DHD_TRACE(("%s %d: Not a IP packet 0x%x\n",
__FUNCTION__, __LINE__, new_ether_type));
goto exit;
}
DHD_TRACE(("%s %d: IP pkt! 0x%x\n", __FUNCTION__, __LINE__, new_ether_type));
new_ip_hdr = new_ether_hdr + ETHER_HDR_LEN;
cur_framelen -= ETHER_HDR_LEN;
ASSERT(cur_framelen >= IPV4_MIN_HEADER_LEN);
new_ip_hdr_len = IPV4_HLEN(new_ip_hdr);
if (IP_VER(new_ip_hdr) != IP_VER_4 || IPV4_PROT(new_ip_hdr) != IP_PROT_TCP) {
DHD_TRACE(("%s %d: Not IPv4 nor TCP! ip ver %d, prot %d\n",
__FUNCTION__, __LINE__, IP_VER(new_ip_hdr), IPV4_PROT(new_ip_hdr)));
goto exit;
}
new_tcp_hdr = new_ip_hdr + new_ip_hdr_len;
cur_framelen -= new_ip_hdr_len;
ASSERT(cur_framelen >= TCP_MIN_HEADER_LEN);
DHD_TRACE(("%s %d: TCP pkt!\n", __FUNCTION__, __LINE__));
/* is it an ack ? Allow only ACK flag, not to suppress others. */
if (new_tcp_hdr[TCP_FLAGS_OFFSET] != TCP_FLAG_ACK) {
DHD_TRACE(("%s %d: Do not touch TCP flag 0x%x\n",
__FUNCTION__, __LINE__, new_tcp_hdr[TCP_FLAGS_OFFSET]));
goto exit;
}
new_ip_total_len = ntoh16_ua(&new_ip_hdr[IPV4_PKTLEN_OFFSET]);
new_tcp_hdr_len = 4 * TCP_HDRLEN(new_tcp_hdr[TCP_HLEN_OFFSET]);
/* This packet has TCP data, so just send */
if (new_ip_total_len > new_ip_hdr_len + new_tcp_hdr_len) {
DHD_TRACE(("%s %d: Do nothing for TCP DATA\n", __FUNCTION__, __LINE__));
goto exit;
}
ASSERT(new_ip_total_len == new_ip_hdr_len + new_tcp_hdr_len);
new_tcp_ack_num = ntoh32_ua(&new_tcp_hdr[TCP_ACK_NUM_OFFSET]);
DHD_TRACE(("%s %d: TCP ACK with zero DATA length"
" IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR" TCP port %d %d\n",
__FUNCTION__, __LINE__,
IPV4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&new_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&new_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* Look for tcp_ack_info that has the same ip src/dst addrs and tcp src/dst ports */
flags = dhd_os_tcpacklock(dhdp);
tcpack_sup_mod = dhdp->tcpack_sup_module;
tcpack_info_tbl = tcpack_sup_mod->tcpack_info_tbl;
if (!tcpack_sup_mod) {
DHD_ERROR(("%s %d: tcpack suppress module NULL!!\n", __FUNCTION__, __LINE__));
dhd_os_tcpackunlock(dhdp, flags);
goto exit;
}
hold = TRUE;
for (i = 0; i < TCPACK_INFO_MAXNUM; i++) {
void *oldpkt; /* TCPACK packet that is already in txq or DelayQ */
uint8 *old_ether_hdr, *old_ip_hdr, *old_tcp_hdr;
uint32 old_ip_hdr_len, old_tcp_hdr_len;
uint32 old_tcpack_num; /* TCP ACK number of old TCPACK packet in Q */
if ((oldpkt = tcpack_info_tbl[i].pkt_in_q) == NULL) {
if (free_slot == TCPACK_INFO_MAXNUM) {
free_slot = i;
}
continue;
}
if (PKTDATA(dhdp->osh, oldpkt) == NULL) {
DHD_ERROR(("%s %d: oldpkt data NULL!! cur idx %d\n",
__FUNCTION__, __LINE__, i));
hold = FALSE;
dhd_os_tcpackunlock(dhdp, flags);
goto exit;
}
old_ether_hdr = tcpack_info_tbl[i].pkt_ether_hdr;
old_ip_hdr = old_ether_hdr + ETHER_HDR_LEN;
old_ip_hdr_len = IPV4_HLEN(old_ip_hdr);
old_tcp_hdr = old_ip_hdr + old_ip_hdr_len;
old_tcp_hdr_len = 4 * TCP_HDRLEN(old_tcp_hdr[TCP_HLEN_OFFSET]);
DHD_TRACE(("%s %d: oldpkt %p[%d], IP addr "IPV4_ADDR_STR" "IPV4_ADDR_STR
" TCP port %d %d\n", __FUNCTION__, __LINE__, oldpkt, i,
IPV4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPV4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&old_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&old_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* If either of IP address or TCP port number does not match, skip. */
if (memcmp(&new_ip_hdr[IPV4_SRC_IP_OFFSET],
&old_ip_hdr[IPV4_SRC_IP_OFFSET], IPV4_ADDR_LEN * 2) ||
memcmp(&new_tcp_hdr[TCP_SRC_PORT_OFFSET],
&old_tcp_hdr[TCP_SRC_PORT_OFFSET], TCP_PORT_LEN * 2)) {
continue;
}
old_tcpack_num = ntoh32_ua(&old_tcp_hdr[TCP_ACK_NUM_OFFSET]);
if (IS_TCPSEQ_GE(new_tcp_ack_num, old_tcpack_num)) {
tcpack_info_tbl[i].supp_cnt++;
if (tcpack_info_tbl[i].supp_cnt >= dhdp->tcpack_sup_ratio) {
tcpack_info_tbl[i].pkt_in_q = NULL;
tcpack_info_tbl[i].pkt_ether_hdr = NULL;
tcpack_info_tbl[i].ifidx = 0;
tcpack_info_tbl[i].supp_cnt = 0;
hold = FALSE;
} else {
tcpack_info_tbl[i].pkt_in_q = pkt;
tcpack_info_tbl[i].pkt_ether_hdr = new_ether_hdr;
tcpack_info_tbl[i].ifidx = ifidx;
}
PKTFREE(dhdp->osh, oldpkt, TRUE);
} else {
PKTFREE(dhdp->osh, pkt, TRUE);
}
dhd_os_tcpackunlock(dhdp, flags);
if (!hold) {
del_timer_sync(&tcpack_info_tbl[i].timer);
}
goto exit;
}
if (free_slot < TCPACK_INFO_MAXNUM) {
/* No TCPACK packet with the same IP addr and TCP port is found
* in tcp_ack_info_tbl. So add this packet to the table.
*/
DHD_TRACE(("%s %d: Add pkt 0x%p(ether_hdr 0x%p) to tbl[%d]\n",
__FUNCTION__, __LINE__, pkt, new_ether_hdr,
free_slot));
tcpack_info_tbl[free_slot].pkt_in_q = pkt;
tcpack_info_tbl[free_slot].pkt_ether_hdr = new_ether_hdr;
tcpack_info_tbl[free_slot].ifidx = ifidx;
tcpack_info_tbl[free_slot].supp_cnt = 1;
mod_timer(&tcpack_sup_mod->tcpack_info_tbl[free_slot].timer,
jiffies + msecs_to_jiffies(dhdp->tcpack_sup_delay));
tcpack_sup_mod->tcpack_info_cnt++;
} else {
DHD_TRACE(("%s %d: No empty tcp ack info tbl\n",
__FUNCTION__, __LINE__));
}
dhd_os_tcpackunlock(dhdp, flags);
exit:
return hold;
}
uint8_t orig_ip4_ret_ver(const Packet *p)
{
return IP_VER(p->orig_iph);
}
uint8_t ip4_ret_ver(const Packet *p)
{
return IP_VER(p->iph);
}
bool
dhd_tcpack_suppress(dhd_pub_t *dhdp, void *pkt)
{
uint8 *new_ether_hdr; /* Ethernet header of the new packet */
uint16 new_ether_type; /* Ethernet type of the new packet */
uint8 *new_ip_hdr; /* IP header of the new packet */
uint8 *new_tcp_hdr; /* TCP header of the new packet */
uint32 new_ip_hdr_len; /* IP header length of the new packet */
uint32 cur_framelen;
#if defined(DHD_DEBUG)
uint32 new_tcp_seq_num; /* TCP sequence number of the new packet */
#endif
uint32 new_tcp_ack_num; /* TCP acknowledge number of the new packet */
uint16 new_ip_total_len; /* Total length of IP packet for the new packet */
uint32 new_tcp_hdr_len; /* TCP header length of the new packet */
int i;
bool ret = FALSE;
if (!dhdp->tcpack_sup_enabled)
goto exit;
new_ether_hdr = PKTDATA(dhdp->osh, pkt);
cur_framelen = PKTLEN(dhdp->osh, pkt);
if (cur_framelen < TCPACKSZMIN || cur_framelen > TCPACKSZMAX) {
DHD_TRACE(("%s %d: Too short or long length %d to be TCP ACK\n",
__FUNCTION__, __LINE__, cur_framelen));
goto exit;
}
new_ether_type = new_ether_hdr[12] << 8 | new_ether_hdr[13];
if (new_ether_type != ETHER_TYPE_IP) {
DHD_TRACE(("%s %d: Not a IP packet 0x%x\n",
__FUNCTION__, __LINE__, new_ether_type));
goto exit;
}
DHD_TRACE(("%s %d: IP pkt! 0x%x\n", __FUNCTION__, __LINE__, new_ether_type));
new_ip_hdr = new_ether_hdr + ETHER_HDR_LEN;
cur_framelen -= ETHER_HDR_LEN;
ASSERT(cur_framelen >= IPV4_MIN_HEADER_LEN);
new_ip_hdr_len = IPV4_HLEN(new_ip_hdr);
if (IP_VER(new_ip_hdr) != IP_VER_4 || IPV4_PROT(new_ip_hdr) != IP_PROT_TCP) {
DHD_TRACE(("%s %d: Not IPv4 nor TCP! ip ver %d, prot %d\n",
__FUNCTION__, __LINE__, IP_VER(new_ip_hdr), IPV4_PROT(new_ip_hdr)));
goto exit;
}
new_tcp_hdr = new_ip_hdr + new_ip_hdr_len;
cur_framelen -= new_ip_hdr_len;
ASSERT(cur_framelen >= TCP_MIN_HEADER_LEN);
DHD_TRACE(("%s %d: TCP pkt!\n", __FUNCTION__, __LINE__));
/* is it an ack ? Allow only ACK flag, not to suppress others. */
if (new_tcp_hdr[TCP_FLAGS_OFFSET] != TCP_FLAG_ACK) {
DHD_TRACE(("%s %d: Do not touch TCP flag 0x%x\n",
__FUNCTION__, __LINE__, new_tcp_hdr[TCP_FLAGS_OFFSET]));
goto exit;
}
new_ip_total_len = ntoh16_ua(&new_ip_hdr[IPV4_PKTLEN_OFFSET]);
new_tcp_hdr_len = 4 * TCP_HDRLEN(new_tcp_hdr[TCP_HLEN_OFFSET]);
/* This packet has TCP data, so just send */
if (new_ip_total_len > new_ip_hdr_len + new_tcp_hdr_len) {
DHD_TRACE(("%s %d: Do nothing for TCP DATA\n", __FUNCTION__, __LINE__));
goto exit;
}
ASSERT(new_ip_total_len == new_ip_hdr_len + new_tcp_hdr_len);
new_tcp_ack_num = ntoh32_ua(&new_tcp_hdr[TCP_ACK_NUM_OFFSET]);
#if defined(DHD_DEBUG)
new_tcp_seq_num = ntoh32_ua(&new_tcp_hdr[TCP_SEQ_NUM_OFFSET]);
DHD_TRACE(("%s %d: TCP ACK seq %u ack %u\n", __FUNCTION__, __LINE__,
new_tcp_seq_num, new_tcp_ack_num));
#endif
DHD_TRACE(("%s %d: TCP ACK with zero DATA length"
" IP addr "IPv4_ADDR_STR" "IPv4_ADDR_STR" TCP port %d %d\n",
__FUNCTION__, __LINE__,
IPv4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPv4_ADDR_TO_STR(ntoh32_ua(&new_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&new_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&new_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* Look for tcp_ack_info that has the same ip src/dst addrs and tcp src/dst ports */
dhd_os_tcpacklock(dhdp);
for (i = 0; i < dhdp->tcp_ack_info_cnt; i++) {
void *oldpkt; /* TCPACK packet that is already in txq or DelayQ */
uint8 *old_ether_hdr, *old_ip_hdr, *old_tcp_hdr;
uint32 old_ip_hdr_len, old_tcp_hdr_len;
uint32 old_tcpack_num; /* TCP ACK number of old TCPACK packet in Q */
if ((oldpkt = dhdp->tcp_ack_info_tbl[i].pkt_in_q) == NULL) {
DHD_ERROR(("%s %d: Unexpected error!! cur idx %d, ttl cnt %d\n",
__FUNCTION__, __LINE__, i, dhdp->tcp_ack_info_cnt));
break;
}
if (PKTDATA(dhdp->osh, oldpkt) == NULL) {
DHD_ERROR(("%s %d: oldpkt data NULL!! cur idx %d, ttl cnt %d\n",
__FUNCTION__, __LINE__, i, dhdp->tcp_ack_info_cnt));
break;
}
old_ether_hdr = dhdp->tcp_ack_info_tbl[i].pkt_ether_hdr;
old_ip_hdr = old_ether_hdr + ETHER_HDR_LEN;
old_ip_hdr_len = IPV4_HLEN(old_ip_hdr);
old_tcp_hdr = old_ip_hdr + old_ip_hdr_len;
old_tcp_hdr_len = 4 * TCP_HDRLEN(old_tcp_hdr[TCP_HLEN_OFFSET]);
DHD_TRACE(("%s %d: oldpkt %p[%d], IP addr "IPv4_ADDR_STR" "IPv4_ADDR_STR
" TCP port %d %d\n", __FUNCTION__, __LINE__, oldpkt, i,
IPv4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_SRC_IP_OFFSET])),
IPv4_ADDR_TO_STR(ntoh32_ua(&old_ip_hdr[IPV4_DEST_IP_OFFSET])),
ntoh16_ua(&old_tcp_hdr[TCP_SRC_PORT_OFFSET]),
ntoh16_ua(&old_tcp_hdr[TCP_DEST_PORT_OFFSET])));
/* If either of IP address or TCP port number does not match, skip. */
if (memcmp(&new_ip_hdr[IPV4_SRC_IP_OFFSET],
&old_ip_hdr[IPV4_SRC_IP_OFFSET], IPV4_ADDR_LEN * 2) ||
memcmp(&new_tcp_hdr[TCP_SRC_PORT_OFFSET],
&old_tcp_hdr[TCP_SRC_PORT_OFFSET], TCP_PORT_LEN * 2))
continue;
old_tcpack_num = ntoh32_ua(&old_tcp_hdr[TCP_ACK_NUM_OFFSET]);
if (new_tcp_ack_num > old_tcpack_num) {
/* New packet has higher TCP ACK number, so it replaces the old packet */
if (new_ip_hdr_len == old_ip_hdr_len &&
new_tcp_hdr_len == old_tcp_hdr_len) {
ASSERT(memcmp(new_ether_hdr, old_ether_hdr, ETHER_HDR_LEN) == 0);
bcopy(new_ip_hdr, old_ip_hdr, new_ip_total_len);
PKTFREE(dhdp->osh, pkt, FALSE);
DHD_TRACE(("%s %d: TCP ACK replace %u -> %u\n",
__FUNCTION__, __LINE__, old_tcpack_num, new_tcp_ack_num));
ret = TRUE;
} else
DHD_TRACE(("%s %d: lenth mismatch %d != %d || %d != %d\n",
__FUNCTION__, __LINE__, new_ip_hdr_len, old_ip_hdr_len,
new_tcp_hdr_len, old_tcp_hdr_len));
} else {
DHD_TRACE(("%s %d: ACK number reverse old %u(0x%p) new %u(0x%p)\n",
__FUNCTION__, __LINE__, old_tcpack_num, oldpkt,
new_tcp_ack_num, pkt));
#ifdef TCPACK_TEST
if (new_ip_hdr_len == old_ip_hdr_len &&
new_tcp_hdr_len == old_tcp_hdr_len) {
PKTFREE(dhdp->osh, pkt, FALSE);
ret = TRUE;
}
#endif
}
dhd_os_tcpackunlock(dhdp);
goto exit;
}
if (i == dhdp->tcp_ack_info_cnt && i < MAXTCPSTREAMS) {
/* No TCPACK packet with the same IP addr and TCP port is found
* in tcp_ack_info_tbl. So add this packet to the table.
*/
DHD_TRACE(("%s %d: Add pkt 0x%p(ether_hdr 0x%p) to tbl[%d]\n",
__FUNCTION__, __LINE__, pkt, new_ether_hdr, dhdp->tcp_ack_info_cnt));
dhdp->tcp_ack_info_tbl[dhdp->tcp_ack_info_cnt].pkt_in_q = pkt;
dhdp->tcp_ack_info_tbl[dhdp->tcp_ack_info_cnt].pkt_ether_hdr = new_ether_hdr;
dhdp->tcp_ack_info_cnt++;
} else {
ASSERT(i == dhdp->tcp_ack_info_cnt);
DHD_TRACE(("%s %d: No empty tcp ack info tbl\n",
__FUNCTION__, __LINE__));
}
dhd_os_tcpackunlock(dhdp);
exit:
return ret;
}
/* sguil only uses log */
int OpSguil_Log(void *context, void *data)
{
char timestamp[TIMEBUF_SIZE];
char syslogMessage[SYSLOG_BUF];
char eventInfo[SYSLOG_BUF];
//int MAX_INSERT_LEN = 1024;
char insertColumns[MAX_QUERY_SIZE];
char insertValues[MAX_QUERY_SIZE];
char valuesTemp[MAX_QUERY_SIZE];
char ipInfo[38];
char portInfo[16];
char *esc_message;
Sid *sid = NULL;
ClassType *class_type;
UnifiedLogRecord *record = (UnifiedLogRecord *)data;
OpSguil_Data *op_data = (OpSguil_Data *)context;
Packet p;
bzero(syslogMessage, SYSLOG_BUF);
bzero(insertColumns, MAX_QUERY_SIZE);
bzero(insertValues, MAX_QUERY_SIZE);
#if 0 /* this is broken */
/* skip tagged packets, since the db does not have a mechanism to
* deal with them properly
*/
if(record->log.event.event_reference)
{
LogMessage("Skipping tagged packet %i\n", record->log.event.event_reference);
return 0;
}
#endif
RenderTimestamp(record->log.pkth.ts.tv_sec, timestamp, TIMEBUF_SIZE);
//fprintf(stdout, "Timestamp: %lu\n", GetMilliseconds());
//fflush(stdout);
sid = GetSid(record->log.event.sig_generator, record->log.event.sig_id);
if(sid == NULL)
sid = FakeSid(record->log.event.sig_generator, record->log.event.sig_id);
class_type = GetClassType(record->log.event.classification);
//sgBeginTransaction(op_data); /* XXX: Error checking */
/* Build the event insert. */
snprintf(insertColumns, MAX_QUERY_SIZE,
"INSERT INTO event (status, sid, cid, signature_id, signature_rev, signature, timestamp, priority, class");
esc_message = malloc(strlen(sid->msg)*2+1);
mysql_real_escape_string(op_data->mysql, esc_message, sid->msg, strlen(sid->msg));
if(class_type == NULL)
{
snprintf(valuesTemp, MAX_QUERY_SIZE,
"VALUES ('0', '%u', '%u', '%d', '%d', '%s', '%s', '%u', 'unknown'",
op_data->sensor_id, op_data->event_id, sid->sid, sid->rev, esc_message, timestamp,
record->log.event.priority);
snprintf(eventInfo, SYSLOG_BUF, "RTEvent |0|%u|unknown|%s|%s|%u|%u|%s",
record->log.event.priority,
pv.hostname, timestamp, op_data->sensor_id, op_data->event_id,
sid->msg);
}
else
{
snprintf(valuesTemp, MAX_QUERY_SIZE,
"VALUES ('0', '%u', '%u', '%d', '%d', '%s', '%s', '%u', '%s'",
op_data->sensor_id, op_data->event_id, sid->sid, sid->rev, esc_message, timestamp,
record->log.event.priority, class_type->type);
snprintf(eventInfo, SYSLOG_BUF, "RTEvent |0|%u|%s|%s|%s|%u|%u|%s",
record->log.event.priority, class_type->type,
pv.hostname, timestamp, op_data->sensor_id, op_data->event_id,
sid->msg);
}
free(esc_message);
insertValues[0] = '\0';
strcat(insertValues, valuesTemp);
syslogMessage[0] = '\0';
strcat(syslogMessage, eventInfo);
/* decode the packet */
if(DecodePacket(&p, &record->log.pkth, record->pkt + 2) == 0)
{
if(p.iph)
{
/* Insert ip header information */
//InsertIPData(op_data, &p);
strcat(insertColumns,
",src_ip, dst_ip, ip_proto, ip_ver, ip_hlen, ip_tos, ip_len, ip_id, ip_flags, ip_off, ip_ttl, ip_csum");
snprintf(valuesTemp, MAX_QUERY_SIZE,
",'%u', '%u', '%u', '%u', '%u', '%u', '%u', '%u', '%u', '%u', '%u', '%u'",
ntohl(p.iph->ip_src.s_addr), ntohl(p.iph->ip_dst.s_addr), p.iph->ip_proto, IP_VER(p.iph),
IP_HLEN(p.iph), p.iph->ip_tos, ntohs(p.iph->ip_len), ntohs(p.iph->ip_id),
#if defined(WORDS_BIGENDIAN)
((p.iph->ip_off & 0xE000) >> 13),
htons(p.iph->ip_off & 0x1FFF),
#else
((p.iph->ip_off & 0x00E0) >> 5),
htons(p.iph->ip_off & 0xFF1F),
#endif
p.iph->ip_ttl,
htons(p.iph->ip_csum) < MAX_QUERY_SIZE);
strcat(insertValues, valuesTemp);
/* SYSLOG - Changed to SguilSendEvent*/
snprintf(ipInfo, 38, "|%u.%u.%u.%u|%u.%u.%u.%u|%u",
#if defined(WORDS_BIGENDIAN)
(p.iph->ip_src.s_addr & 0xff000000) >> 24,
(p.iph->ip_src.s_addr & 0x00ff0000) >> 16,
(p.iph->ip_src.s_addr & 0x0000ff00) >> 8,
(p.iph->ip_src.s_addr & 0x000000ff),
(p.iph->ip_dst.s_addr & 0xff000000) >> 24,
(p.iph->ip_dst.s_addr & 0x00ff0000) >> 16,
(p.iph->ip_dst.s_addr & 0x0000ff00) >> 8,
(p.iph->ip_dst.s_addr & 0x000000ff),
#else
(p.iph->ip_src.s_addr & 0x000000ff),
(p.iph->ip_src.s_addr & 0x0000ff00) >> 8,
(p.iph->ip_src.s_addr & 0x00ff0000) >> 16,
(p.iph->ip_src.s_addr & 0xff000000) >> 24,
(p.iph->ip_dst.s_addr & 0x000000ff),
(p.iph->ip_dst.s_addr & 0x0000ff00) >> 8,
(p.iph->ip_dst.s_addr & 0x00ff0000) >> 16,
(p.iph->ip_dst.s_addr & 0xff000000) >> 24,
#endif
p.iph->ip_proto);
strcat(syslogMessage, ipInfo);
/* store layer 4 data for non fragmented packets */
if(!(p.pkt_flags & PKT_FRAG_FLAG))
{
switch(p.iph->ip_proto)
{
case IPPROTO_ICMP:
snprintf(portInfo, 16, "|||");
if(!p.icmph)
break;
strcat(insertColumns,
", icmp_type, icmp_code)");
snprintf(valuesTemp, MAX_QUERY_SIZE,
", '%u', '%u')", p.icmph->icmp_type,
p.icmph->icmp_code);
strcat(insertValues, valuesTemp);
strcat(insertColumns, insertValues);
sgInsert(op_data, insertColumns, NULL);
sgInsertICMPData(op_data, &p);
break;
case IPPROTO_TCP:
strcat(insertColumns,
", src_port, dst_port)");
snprintf(valuesTemp, MAX_QUERY_SIZE,
", '%u', '%u')", p.sp, p.dp);
strcat(insertValues, valuesTemp);
strcat(insertColumns, insertValues);
sgInsert(op_data, insertColumns, NULL);
sgInsertTCPData(op_data, &p);
snprintf(portInfo, 16, "|%u|%u|",
p.sp, p.dp);
break;
case IPPROTO_UDP:
strcat(insertColumns,
", src_port, dst_port)");
snprintf(valuesTemp, MAX_QUERY_SIZE,
", '%u', '%u')", p.sp, p.dp);
strcat(insertValues, valuesTemp);
strcat(insertColumns, insertValues);
sgInsert(op_data, insertColumns, NULL);
sgInsertUDPData(op_data, &p);
snprintf(portInfo, 16, "|%u|%u|",
p.sp, p.dp);
break;
}
strcat(syslogMessage, portInfo);
}
else
{
strcat(syslogMessage, "|||");
}
/* Insert payload data */
sgInsertPayloadData(op_data, &p);
}
else
{
