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qcacmn: Add APIs to get data packets info

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Add APIs to get TCP syn/syn-ack/ack packets,
TCP src/dst port, DNS domain name/query/response,
ICMPv4 req/res, and ICMPv4 src/tgt ip information.

Change-Id: I1e4e92997a33e64fe2e4ae28a05b54b6ba5e8cff
CRs-Fixed: 2168412
This commit is contained in:
Poddar, Siddarth
2018-01-08 16:47:57 +05:30
committed by nshrivas
parent a7bed4f56d
commit a9172bf24d
3 changed files with 442 additions and 0 deletions
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12
qdf/linux/src/i_qdf_nbuf.h
View File

@@ -649,6 +649,18 @@ bool __qdf_nbuf_data_is_arp_req(uint8_t *data);
bool __qdf_nbuf_data_is_arp_rsp(uint8_t *data);
uint32_t __qdf_nbuf_get_arp_src_ip(uint8_t *data);
uint32_t __qdf_nbuf_get_arp_tgt_ip(uint8_t *data);
uint8_t *__qdf_nbuf_get_dns_domain_name(uint8_t *data, uint32_t len);
bool __qdf_nbuf_data_is_dns_query(uint8_t *data);
bool __qdf_nbuf_data_is_dns_response(uint8_t *data);
bool __qdf_nbuf_data_is_tcp_syn(uint8_t *data);
bool __qdf_nbuf_data_is_tcp_syn_ack(uint8_t *data);
bool __qdf_nbuf_data_is_tcp_ack(uint8_t *data);
uint16_t __qdf_nbuf_data_get_tcp_src_port(uint8_t *data);
uint16_t __qdf_nbuf_data_get_tcp_dst_port(uint8_t *data);
bool __qdf_nbuf_data_is_icmpv4_req(uint8_t *data);
bool __qdf_nbuf_data_is_icmpv4_rsp(uint8_t *data);
uint32_t __qdf_nbuf_get_icmpv4_src_ip(uint8_t *data);
uint32_t __qdf_nbuf_get_icmpv4_tgt_ip(uint8_t *data);
enum qdf_proto_subtype __qdf_nbuf_data_get_dhcp_subtype(uint8_t *data);
enum qdf_proto_subtype __qdf_nbuf_data_get_eapol_subtype(uint8_t *data);
enum qdf_proto_subtype __qdf_nbuf_data_get_arp_subtype(uint8_t *data);

252
qdf/linux/src/qdf_nbuf.c
View File

@@ -1527,6 +1527,258 @@ uint32_t __qdf_nbuf_get_arp_tgt_ip(uint8_t *data)
return tgt_ip;
}
/**
* __qdf_nbuf_get_dns_domain_name() - get dns domain name
* @data: Pointer to network data buffer
* @len: length to copy
*
* This api is for dns domain name
*
* Return: dns domain name.
*/
uint8_t *__qdf_nbuf_get_dns_domain_name(uint8_t *data, uint32_t len)
{
uint8_t *domain_name;
domain_name = (uint8_t *)
(data + QDF_NBUF_PKT_DNS_NAME_OVER_UDP_OFFSET);
return domain_name;
}
/**
* __qdf_nbuf_data_is_dns_query() - check if skb data is a dns query
* @data: Pointer to network data buffer
*
* This api is for dns query packet.
*
* Return: true if packet is dns query packet.
* false otherwise.
*/
bool __qdf_nbuf_data_is_dns_query(uint8_t *data)
{
uint16_t op_code;
uint16_t tgt_port;
tgt_port = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_DNS_DST_PORT_OFFSET));
/* Standard DNS query always happen on Dest Port 53. */
if (tgt_port == QDF_SWAP_U16(QDF_NBUF_PKT_DNS_STANDARD_PORT)) {
op_code = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_DNS_OVER_UDP_OPCODE_OFFSET));
if ((QDF_SWAP_U16(op_code) & QDF_NBUF_PKT_DNSOP_BITMAP) ==
QDF_NBUF_PKT_DNSOP_STANDARD_QUERY)
return true;
}
return false;
}
/**
* __qdf_nbuf_data_is_dns_response() - check if skb data is a dns response
* @data: Pointer to network data buffer
*
* This api is for dns query response.
*
* Return: true if packet is dns response packet.
* false otherwise.
*/
bool __qdf_nbuf_data_is_dns_response(uint8_t *data)
{
uint16_t op_code;
uint16_t src_port;
src_port = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_DNS_SRC_PORT_OFFSET));
/* Standard DNS response always comes on Src Port 53. */
if (src_port == QDF_SWAP_U16(QDF_NBUF_PKT_DNS_STANDARD_PORT)) {
op_code = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_DNS_OVER_UDP_OPCODE_OFFSET));
if ((QDF_SWAP_U16(op_code) & QDF_NBUF_PKT_DNSOP_BITMAP) ==
QDF_NBUF_PKT_DNSOP_STANDARD_RESPONSE)
return true;
}
return false;
}
/**
* __qdf_nbuf_data_is_tcp_syn() - check if skb data is a tcp syn
* @data: Pointer to network data buffer
*
* This api is for tcp syn packet.
*
* Return: true if packet is tcp syn packet.
* false otherwise.
*/
bool __qdf_nbuf_data_is_tcp_syn(uint8_t *data)
{
uint8_t op_code;
op_code = (uint8_t)(*(uint8_t *)(data +
QDF_NBUF_PKT_TCP_OPCODE_OFFSET));
if (op_code == QDF_NBUF_PKT_TCPOP_SYN)
return true;
return false;
}
/**
* __qdf_nbuf_data_is_tcp_syn_ack() - check if skb data is a tcp syn ack
* @data: Pointer to network data buffer
*
* This api is for tcp syn ack packet.
*
* Return: true if packet is tcp syn ack packet.
* false otherwise.
*/
bool __qdf_nbuf_data_is_tcp_syn_ack(uint8_t *data)
{
uint8_t op_code;
op_code = (uint8_t)(*(uint8_t *)(data +
QDF_NBUF_PKT_TCP_OPCODE_OFFSET));
if (op_code == QDF_NBUF_PKT_TCPOP_SYN_ACK)
return true;
return false;
}
/**
* __qdf_nbuf_data_is_tcp_ack() - check if skb data is a tcp ack
* @data: Pointer to network data buffer
*
* This api is for tcp ack packet.
*
* Return: true if packet is tcp ack packet.
* false otherwise.
*/
bool __qdf_nbuf_data_is_tcp_ack(uint8_t *data)
{
uint8_t op_code;
op_code = (uint8_t)(*(uint8_t *)(data +
QDF_NBUF_PKT_TCP_OPCODE_OFFSET));
if (op_code == QDF_NBUF_PKT_TCPOP_ACK)
return true;
return false;
}
/**
* __qdf_nbuf_data_get_tcp_src_port() - get tcp src port
* @data: Pointer to network data buffer
*
* This api is for tcp packet.
*
* Return: tcp source port value.
*/
uint16_t __qdf_nbuf_data_get_tcp_src_port(uint8_t *data)
{
uint16_t src_port;
src_port = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_TCP_SRC_PORT_OFFSET));
return src_port;
}
/**
* __qdf_nbuf_data_get_tcp_dst_port() - get tcp dst port
* @data: Pointer to network data buffer
*
* This api is for tcp packet.
*
* Return: tcp destination port value.
*/
uint16_t __qdf_nbuf_data_get_tcp_dst_port(uint8_t *data)
{
uint16_t tgt_port;
tgt_port = (uint16_t)(*(uint16_t *)(data +
QDF_NBUF_PKT_TCP_DST_PORT_OFFSET));
return tgt_port;
}
/**
* __qdf_nbuf_data_is_icmpv4_req() - check if skb data is a icmpv4 request
* @data: Pointer to network data buffer
*
* This api is for ipv4 req packet.
*
* Return: true if packet is icmpv4 request
* false otherwise.
*/
bool __qdf_nbuf_data_is_icmpv4_req(uint8_t *data)
{
uint8_t op_code;
op_code = (uint8_t)(*(uint8_t *)(data +
QDF_NBUF_PKT_ICMPv4_OPCODE_OFFSET));
if (op_code == QDF_NBUF_PKT_ICMPv4OP_REQ)
return true;
return false;
}
/**
* __qdf_nbuf_data_is_icmpv4_rsp() - check if skb data is a icmpv4 res
* @data: Pointer to network data buffer
*
* This api is for ipv4 res packet.
*
* Return: true if packet is icmpv4 response
* false otherwise.
*/
bool __qdf_nbuf_data_is_icmpv4_rsp(uint8_t *data)
{
uint8_t op_code;
op_code = (uint8_t)(*(uint8_t *)(data +
QDF_NBUF_PKT_ICMPv4_OPCODE_OFFSET));
if (op_code == QDF_NBUF_PKT_ICMPv4OP_REPLY)
return true;
return false;
}
/**
* __qdf_nbuf_data_get_icmpv4_src_ip() - get icmpv4 src IP
* @data: Pointer to network data buffer
*
* This api is for ipv4 packet.
*
* Return: icmpv4 packet source IP value.
*/
uint32_t __qdf_nbuf_get_icmpv4_src_ip(uint8_t *data)
{
uint32_t src_ip;
src_ip = (uint32_t)(*(uint32_t *)(data +
QDF_NBUF_PKT_ICMPv4_SRC_IP_OFFSET));
return src_ip;
}
/**
* __qdf_nbuf_data_get_icmpv4_tgt_ip() - get icmpv4 target IP
* @data: Pointer to network data buffer
*
* This api is for ipv4 packet.
*
* Return: icmpv4 packet target IP value.
*/
uint32_t __qdf_nbuf_get_icmpv4_tgt_ip(uint8_t *data)
{
uint32_t tgt_ip;
tgt_ip = (uint32_t)(*(uint32_t *)(data +
QDF_NBUF_PKT_ICMPv4_TGT_IP_OFFSET));
return tgt_ip;
}
/**
* __qdf_nbuf_data_is_ipv6_pkt() - check if it is IPV6 packet.
* @data: Pointer to IPV6 packet data buffer