1 #include "tcp_helper.h"
3 #include "lwip/tcp_impl.h"
4 #include "lwip/stats.h"
6 #include "lwip/inet_chksum.h"
8 #if !LWIP_STATS || !TCP_STATS || !MEMP_STATS
9 #error "This tests needs TCP- and MEMP-statistics enabled"
12 /** Remove all pcbs on the given list. */
14 tcp_remove(struct tcp_pcb* pcb_list)
16 struct tcp_pcb *pcb = pcb_list;
26 /** Remove all pcbs on listen-, active- and time-wait-list (bound- isn't exported). */
30 tcp_remove(tcp_listen_pcbs.pcbs);
31 tcp_remove(tcp_active_pcbs);
32 tcp_remove(tcp_tw_pcbs);
33 fail_unless(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
34 fail_unless(lwip_stats.memp[MEMP_TCP_PCB_LISTEN].used == 0);
35 fail_unless(lwip_stats.memp[MEMP_TCP_SEG].used == 0);
36 fail_unless(lwip_stats.memp[MEMP_PBUF_POOL].used == 0);
39 /** Create a TCP segment usable for passing to tcp_input
40 * - IP-addresses, ports, seqno and ackno are taken from pcb
41 * - seqno and ackno can be altered with an offset
44 tcp_create_rx_segment(struct tcp_pcb* pcb, void* data, size_t data_len, u32_t seqno_offset,
45 u32_t ackno_offset, u8_t headerflags)
47 return tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port, pcb->local_port,
48 data, data_len, pcb->rcv_nxt + seqno_offset, pcb->snd_nxt + ackno_offset, headerflags);
51 /** Create a TCP segment usable for passing to tcp_input */
53 tcp_create_segment(ip_addr_t* src_ip, ip_addr_t* dst_ip,
54 u16_t src_port, u16_t dst_port, void* data, size_t data_len,
55 u32_t seqno, u32_t ackno, u8_t headerflags)
59 struct tcp_hdr* tcphdr;
60 u16_t pbuf_len = (u16_t)(sizeof(struct ip_hdr) + sizeof(struct tcp_hdr) + data_len);
62 p = pbuf_alloc(PBUF_RAW, pbuf_len, PBUF_POOL);
63 EXPECT_RETNULL(p != NULL);
64 EXPECT_RETNULL(p->next == NULL);
66 memset(p->payload, 0, p->len);
70 iphdr->dest.addr = dst_ip->addr;
71 iphdr->src.addr = src_ip->addr;
72 IPH_VHLTOS_SET(iphdr, 4, IP_HLEN / 4, 0);
73 IPH_LEN_SET(iphdr, htons(p->tot_len));
74 IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
76 pbuf_header(p, -(s16_t)sizeof(struct ip_hdr));
79 tcphdr->src = htons(src_port);
80 tcphdr->dest = htons(dst_port);
81 tcphdr->seqno = htonl(seqno);
82 tcphdr->ackno = htonl(ackno);
83 TCPH_HDRLEN_SET(tcphdr, sizeof(struct tcp_hdr)/4);
84 TCPH_FLAGS_SET(tcphdr, headerflags);
85 tcphdr->wnd = htons(TCP_WND);
88 memcpy((char*)tcphdr + sizeof(struct tcp_hdr), data, data_len);
90 /* calculate checksum */
91 tcphdr->chksum = inet_chksum_pseudo(p, &(iphdr->src), &(iphdr->dest),
92 IP_PROTO_TCP, p->tot_len);
94 pbuf_header(p, sizeof(struct ip_hdr));
99 /** Safely bring a tcp_pcb into the requested state */
101 tcp_set_state(struct tcp_pcb* pcb, enum tcp_state state, ip_addr_t* local_ip,
102 ip_addr_t* remote_ip, u16_t local_port, u16_t remote_port)
104 /* @todo: are these all states? */
105 /* @todo: remove from previous list */
107 if (state == ESTABLISHED) {
108 TCP_REG(&tcp_active_pcbs, pcb);
109 pcb->local_ip.addr = local_ip->addr;
110 pcb->local_port = local_port;
111 pcb->remote_ip.addr = remote_ip->addr;
112 pcb->remote_port = remote_port;
113 } else if(state == LISTEN) {
114 TCP_REG(&tcp_listen_pcbs.pcbs, pcb);
115 pcb->local_ip.addr = local_ip->addr;
116 pcb->local_port = local_port;
117 } else if(state == TIME_WAIT) {
118 TCP_REG(&tcp_tw_pcbs, pcb);
119 pcb->local_ip.addr = local_ip->addr;
120 pcb->local_port = local_port;
121 pcb->remote_ip.addr = remote_ip->addr;
122 pcb->remote_port = remote_port;
129 test_tcp_counters_err(void* arg, err_t err)
131 struct test_tcp_counters* counters = arg;
132 EXPECT_RET(arg != NULL);
133 counters->err_calls++;
134 counters->last_err = err;
138 test_tcp_counters_check_rxdata(struct test_tcp_counters* counters, struct pbuf* p)
142 if(counters->expected_data == NULL) {
143 /* no data to compare */
146 EXPECT_RET(counters->recved_bytes + p->tot_len <= counters->expected_data_len);
147 received = counters->recved_bytes;
148 for(q = p; q != NULL; q = q->next) {
149 char *data = q->payload;
150 for(i = 0; i < q->len; i++) {
151 EXPECT_RET(data[i] == counters->expected_data[received]);
155 EXPECT(received == counters->recved_bytes + p->tot_len);
159 test_tcp_counters_recv(void* arg, struct tcp_pcb* pcb, struct pbuf* p, err_t err)
161 struct test_tcp_counters* counters = arg;
162 EXPECT_RETX(arg != NULL, ERR_OK);
163 EXPECT_RETX(pcb != NULL, ERR_OK);
164 EXPECT_RETX(err == ERR_OK, ERR_OK);
167 if (counters->close_calls == 0) {
168 counters->recv_calls++;
169 test_tcp_counters_check_rxdata(counters, p);
170 counters->recved_bytes += p->tot_len;
172 counters->recv_calls_after_close++;
173 counters->recved_bytes_after_close += p->tot_len;
177 counters->close_calls++;
179 EXPECT(counters->recv_calls_after_close == 0 && counters->recved_bytes_after_close == 0);
183 /** Allocate a pcb and set up the test_tcp_counters_* callbacks */
185 test_tcp_new_counters_pcb(struct test_tcp_counters* counters)
187 struct tcp_pcb* pcb = tcp_new();
189 /* set up args and callbacks */
190 tcp_arg(pcb, counters);
191 tcp_recv(pcb, test_tcp_counters_recv);
192 tcp_err(pcb, test_tcp_counters_err);