On incoming SYN+ACK, use the existing TCP connection.
This problem was overlooked earlier and was found while
testing TCP2 client side.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In SYN_SENT check the ack number of the incoming TCP message
against our sequence number.
This problem was overlooked earlier and was found while
testing TCP2 client side.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Don't erroneously instantiate an extra TCP connection
on TCP connect.
This problem was overlooked earlier and found while testing
TCP2 client side.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
k_timer callback is executed from ISR context, which isn't
currenty compatible with Zephyr's shell implementation.
This problem was found while testing TCP2 client side.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In order to support TTCN-3 based TCP2 sanity check,
register test inputs with net_conn_register() and adjust
test functions to account for this.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In order to support IPv4/IPv6, work with packet through
net_pkt_ip_hdr_len(), net_pkt_ip_opts_len() which account
for IPv4/IPv6, IPv4 options and IPv6 extension headers.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Allocate tcp2.c endpoints before storing port numbers or addresses.
Select the IPv4 source address since net_context_create_ipv4_new()
is not currently called on packet output.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
The transition from LISTEN to SYN_SENT nullifies the th,
guard on th being NULL in SYN_SENT.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In case the final ACK for the connection establishment arrives
out of order, evaluate the sequence number in SYN_RECEIVED,
so the data packet isn't false identified as a final ACK.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In order to simplify the evaluation of the incoming data,
add len and evaluate the data for the incoming packet once.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Create a new connection only for the SYN packet,
otherwise pass a packet into existing connection.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
The initial logic with this check is too restrictive,
do not bail-out on unconsumed flags.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Add a diagnostic information on network buffer sizes
and the total length of the packet.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Set the net_context to NET_CONTEXT_CONNECTED state only once
in transitions to TCP_ESTABLISHED.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
1. Reduce the internal buffer
2. Eliminate extra string pointer
3. Add a comment on deleting the last comma
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In order to avoid naming collision with tcp_recv(),
rename tcp_recv() into tp_tcp_recv().
This function is used by the test protocol.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Drop snprintf() and use snprintk() as snprintk()
is more suitable for the networking code.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
In order to properly remove struct tcp and its data, net_context
needs to be supplied as k_timer user data. Modify net_tcp_unref()
to take a net_context argument when removing, and add ifdefs
around code that after this will only be used by TCP testing
functionality.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Add a net_context backpointer and receiver user data to the tcp
structure. Once the desired callback and user data is set in
net_tcp_recv(), net_context_packet_received() can be called at
TCP reception in tcp_data_get(), moving the TCP data to the
recipient. IP and TCP protocol headers are sent as NULL, they
are not used by e.g. the socket code.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Since TCP needs to be able to decide how much data is to be sent
in a TCP segment and when the segment needs to be sent, the TCP
data buffer needs to be passed down to the TCP stack. For tcp2
this causes a new function handling the data as a buffer or as an
iov to be implemented and only that function is called when
sending data out via the new TCP stack. net_tcp_send_data() is
invoked as the caller expects to be informed when the data has
been sent.
For the current stack keep the sending functions as is.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Register the TCP connection when accept() and connect() is called.
With the connection registration net_context will have the necessary
callback pointer set up, whereby net_context can call the proper
function when receiving packets for the TCP connecton.
With the new TCP stack this callback is always the same function.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
