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net: tcp2: Add send_win into the TCP connection

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In order to support the send window, add send_win into
the TCP connection.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
This commit is contained in:
Oleg Zhurakivskyy 2020-05-13 14:42:50 +03:00 • committed by Carles Cufí
commit 9efdbe19dd
2 changed files with 8 additions and 3 deletions
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8
subsys/net/ip/tcp2.c
View file

@ -523,7 +523,7 @@ static int tcp_header_add(struct tcp *conn, struct net_pkt *pkt, u8_t flags,
th->th_off = 5; th->th_off = 5;
th->th_flags = flags; th->th_flags = flags;
th->th_win = htons(conn->win); th->th_win = htons(conn->recv_win);
th->th_seq = htonl(seq); th->th_seq = htonl(seq);
if (ACK & flags) { if (ACK & flags) {
@ -637,7 +637,7 @@ static struct tcp *tcp_conn_alloc(void)
conn->state = TCP_LISTEN; conn->state = TCP_LISTEN;
conn->win = tcp_window; conn->recv_win = tcp_window;
conn->seq = (IS_ENABLED(CONFIG_NET_TEST_PROTOCOL) || conn->seq = (IS_ENABLED(CONFIG_NET_TEST_PROTOCOL) ||
IS_ENABLED(CONFIG_NET_TEST)) ? 0 : sys_rand32_get(); IS_ENABLED(CONFIG_NET_TEST)) ? 0 : sys_rand32_get();
@ -863,6 +863,10 @@ static void tcp_in(struct tcp *conn, struct net_pkt *pkt)
goto next_state; goto next_state;
} }
if (th) {
conn->send_win = ntohs(th->th_win);
}
if (FL(&fl, &, RST)) { if (FL(&fl, &, RST)) {
conn_state(conn, TCP_CLOSED); conn_state(conn, TCP_CLOSED);
} }

3
subsys/net/ip/tcp2_priv.h
View file

@ -160,7 +160,8 @@ struct tcp { /* TCP connection */
u32_t ack; u32_t ack;
union tcp_endpoint src; union tcp_endpoint src;
union tcp_endpoint dst; union tcp_endpoint dst;
u16_t win; u16_t recv_win;
u16_t send_win;
struct tcp_options recv_options; struct tcp_options recv_options;
struct k_delayed_work send_timer; struct k_delayed_work send_timer;
sys_slist_t send_queue; sys_slist_t send_queue;