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Added unit test case for persist timer / zero window probes

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This commit is contained in:
Simon Goldschmidt
2011-10-10 21:06:50 +02:00
parent f29bdd21a7
commit ce98df59f1
3 changed files with 213 additions and 22 deletions
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71
test/unit/tcp/tcp_helper.c
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@@ -36,23 +36,11 @@ tcp_remove_all(void)
fail_unless(lwip_stats.memp[MEMP_PBUF_POOL].used == 0);
}
/** Create a TCP segment usable for passing to tcp_input
* - IP-addresses, ports, seqno and ackno are taken from pcb
* - seqno and ackno can be altered with an offset
*/
struct pbuf*
tcp_create_rx_segment(struct tcp_pcb* pcb, void* data, size_t data_len, u32_t seqno_offset,
u32_t ackno_offset, u8_t headerflags)
{
return tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port, pcb->local_port,
data, data_len, pcb->rcv_nxt + seqno_offset, pcb->lastack + ackno_offset, headerflags);
}
/** Create a TCP segment usable for passing to tcp_input */
struct pbuf*
tcp_create_segment(ip_addr_t* src_ip, ip_addr_t* dst_ip,
static struct pbuf*
tcp_create_segment_wnd(ip_addr_t* src_ip, ip_addr_t* dst_ip,
u16_t src_port, u16_t dst_port, void* data, size_t data_len,
u32_t seqno, u32_t ackno, u8_t headerflags)
u32_t seqno, u32_t ackno, u8_t headerflags, u16_t wnd)
{
struct pbuf *p, *q;
struct ip_hdr* iphdr;
@@ -91,7 +79,7 @@ tcp_create_segment(ip_addr_t* src_ip, ip_addr_t* dst_ip,
tcphdr->ackno = htonl(ackno);
TCPH_HDRLEN_SET(tcphdr, sizeof(struct tcp_hdr)/4);
TCPH_FLAGS_SET(tcphdr, headerflags);
tcphdr->wnd = htons(TCP_WND);
tcphdr->wnd = htons(wnd);
if (data_len > 0) {
/* let p point to TCP data */
@@ -112,6 +100,40 @@ tcp_create_segment(ip_addr_t* src_ip, ip_addr_t* dst_ip,
return p;
}
/** Create a TCP segment usable for passing to tcp_input */
struct pbuf*
tcp_create_segment(ip_addr_t* src_ip, ip_addr_t* dst_ip,
u16_t src_port, u16_t dst_port, void* data, size_t data_len,
u32_t seqno, u32_t ackno, u8_t headerflags)
{
return tcp_create_segment_wnd(src_ip, dst_ip, src_port, dst_port, data,
data_len, seqno, ackno, headerflags, TCP_WND);
}
/** Create a TCP segment usable for passing to tcp_input
* - IP-addresses, ports, seqno and ackno are taken from pcb
* - seqno and ackno can be altered with an offset
*/
struct pbuf*
tcp_create_rx_segment(struct tcp_pcb* pcb, void* data, size_t data_len, u32_t seqno_offset,
u32_t ackno_offset, u8_t headerflags)
{
return tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port, pcb->local_port,
data, data_len, pcb->rcv_nxt + seqno_offset, pcb->lastack + ackno_offset, headerflags);
}
/** Create a TCP segment usable for passing to tcp_input
* - IP-addresses, ports, seqno and ackno are taken from pcb
* - seqno and ackno can be altered with an offset
* - TCP window can be adjusted
*/
struct pbuf* tcp_create_rx_segment_wnd(struct tcp_pcb* pcb, void* data, size_t data_len,
u32_t seqno_offset, u32_t ackno_offset, u8_t headerflags, u16_t wnd)
{
return tcp_create_segment_wnd(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port, pcb->local_port,
data, data_len, pcb->rcv_nxt + seqno_offset, pcb->lastack + ackno_offset, headerflags, wnd);
}
/** Safely bring a tcp_pcb into the requested state */
void
tcp_set_state(struct tcp_pcb* pcb, enum tcp_state state, ip_addr_t* local_ip,
@@ -239,11 +261,18 @@ static err_t test_tcp_netif_output(struct netif *netif, struct pbuf *p,
LWIP_UNUSED_ARG(ipaddr);
txcounters->num_tx_calls++;
txcounters->num_tx_bytes += p->tot_len;
/*if (txcounters->tx_packets == NULL) {
txcounters->tx_packets = p;
} else {
pbuf_cat(txcounters->tx_packets, p);
}*/
if (txcounters->copy_tx_packets) {
struct pbuf *p_copy = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
err_t err;
EXPECT(p_copy != NULL);
err = pbuf_copy(p_copy, p);
EXPECT(err == ERR_OK);
if (txcounters->tx_packets == NULL) {
txcounters->tx_packets = p_copy;
} else {
pbuf_cat(txcounters->tx_packets, p_copy);
}
}
return ERR_OK;
}