00001 #include "tcp_helper.h"
00002
00003 #include "lwip/tcp.h"
00004 #include "lwip/stats.h"
00005 #include "lwip/pbuf.h"
00006 #include "lwip/inet_chksum.h"
00007
00008 #if !LWIP_STATS || !TCP_STATS || !MEMP_STATS
00009 #error "This tests needs TCP- and MEMP-statistics enabled"
00010 #endif
00011
00012
00013 static void
00014 tcp_remove(struct tcp_pcb* pcb_list)
00015 {
00016 struct tcp_pcb *pcb = pcb_list;
00017 struct tcp_pcb *pcb2;
00018
00019 while(pcb != NULL) {
00020 pcb2 = pcb;
00021 pcb = pcb->next;
00022 tcp_abort(pcb2);
00023 }
00024 }
00025
00026
00027 void
00028 tcp_remove_all(void)
00029 {
00030
00031 tcp_remove(tcp_listen_pcbs.pcbs);
00032 tcp_remove(tcp_active_pcbs);
00033 tcp_remove(tcp_tw_pcbs);
00034 fail_unless(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
00035 fail_unless(lwip_stats.memp[MEMP_TCP_PCB_LISTEN].used == 0);
00036 fail_unless(lwip_stats.memp[MEMP_TCP_SEG].used == 0);
00037 fail_unless(lwip_stats.memp[MEMP_PBUF_POOL].used == 0);
00038 }
00039
00040
00041
00042
00043
00044 struct pbuf*
00045 tcp_create_rx_segment(struct tcp_pcb* pcb, void* data, size_t data_len, u32_t seqno_offset,
00046 u32_t ackno_offset, u8_t headerflags)
00047 {
00048 return tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port, pcb->local_port,
00049 data, data_len, pcb->rcv_nxt + seqno_offset, pcb->snd_nxt + ackno_offset, headerflags);
00050 }
00051
00052
00053 struct pbuf*
00054 tcp_create_segment(struct ip_addr* src_ip, struct ip_addr* dst_ip,
00055 u16_t src_port, u16_t dst_port, void* data, size_t data_len,
00056 u32_t seqno, u32_t ackno, u8_t headerflags)
00057 {
00058 struct pbuf* p;
00059 struct ip_hdr* iphdr;
00060 struct tcp_hdr* tcphdr;
00061 u16_t pbuf_len = sizeof(struct ip_hdr) + sizeof(struct tcp_hdr) + data_len;
00062
00063 p = pbuf_alloc(PBUF_RAW, pbuf_len, PBUF_POOL);
00064 EXPECT_RETNULL(p != NULL);
00065 EXPECT_RETNULL(p->next == NULL);
00066
00067 memset(p->payload, 0, p->len);
00068
00069 iphdr = p->payload;
00070
00071 iphdr->dest.addr = dst_ip->addr;
00072 iphdr->src.addr = src_ip->addr;
00073 IPH_VHLTOS_SET(iphdr, 4, IP_HLEN / 4, 0);
00074 IPH_LEN_SET(iphdr, htons(p->tot_len));
00075 IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
00076
00077 pbuf_header(p, -(s16_t)sizeof(struct ip_hdr));
00078
00079 tcphdr = p->payload;
00080 tcphdr->src = htons(src_port);
00081 tcphdr->dest = htons(dst_port);
00082 tcphdr->seqno = htonl(seqno);
00083 tcphdr->ackno = htonl(ackno);
00084 TCPH_HDRLEN_SET(tcphdr, sizeof(struct tcp_hdr)/4);
00085 TCPH_FLAGS_SET(tcphdr, headerflags);
00086 tcphdr->wnd = htonl(TCP_WND);
00087
00088
00089 memcpy((char*)tcphdr + sizeof(struct tcp_hdr), data, data_len);
00090
00091
00092 tcphdr->chksum = inet_chksum_pseudo(p, &(iphdr->src), &(iphdr->dest),
00093 IP_PROTO_TCP, p->tot_len);
00094
00095 pbuf_header(p, sizeof(struct ip_hdr));
00096
00097 return p;
00098 }
00099
00100
00101 void
00102 tcp_set_state(struct tcp_pcb* pcb, enum tcp_state state, struct ip_addr* local_ip,
00103 struct ip_addr* remote_ip, u16_t local_port, u16_t remote_port)
00104 {
00105
00106
00107 pcb->state = state;
00108 if (state == ESTABLISHED) {
00109 TCP_REG(&tcp_active_pcbs, pcb);
00110 pcb->local_ip.addr = local_ip->addr;
00111 pcb->local_port = local_port;
00112 pcb->remote_ip.addr = remote_ip->addr;
00113 pcb->remote_port = remote_port;
00114 } else if(state == LISTEN) {
00115 TCP_REG(&tcp_listen_pcbs.pcbs, pcb);
00116 pcb->local_ip.addr = local_ip->addr;
00117 pcb->local_port = local_port;
00118 } else if(state == TIME_WAIT) {
00119 TCP_REG(&tcp_tw_pcbs, pcb);
00120 pcb->local_ip.addr = local_ip->addr;
00121 pcb->local_port = local_port;
00122 pcb->remote_ip.addr = remote_ip->addr;
00123 pcb->remote_port = remote_port;
00124 } else {
00125 fail();
00126 }
00127 }
00128
00129 void
00130 test_tcp_counters_err(void* arg, err_t err)
00131 {
00132 struct test_tcp_counters* counters = arg;
00133 EXPECT_RET(arg != NULL);
00134 counters->err_calls++;
00135 counters->last_err = err;
00136 }
00137
00138 static void
00139 test_tcp_counters_check_rxdata(struct test_tcp_counters* counters, struct pbuf* p)
00140 {
00141 struct pbuf* q;
00142 u32_t i, received;
00143 if(counters->expected_data == NULL) {
00144
00145 return;
00146 }
00147 EXPECT_RET(counters->recved_bytes + p->tot_len <= counters->expected_data_len);
00148 received = counters->recved_bytes;
00149 for(q = p; q != NULL; q = q->next) {
00150 char *data = q->payload;
00151 for(i = 0; i < q->len; i++) {
00152 EXPECT_RET(data[i] == counters->expected_data[received]);
00153 received++;
00154 }
00155 }
00156 EXPECT(received == counters->recved_bytes + p->tot_len);
00157 }
00158
00159 err_t
00160 test_tcp_counters_recv(void* arg, struct tcp_pcb* pcb, struct pbuf* p, err_t err)
00161 {
00162 struct test_tcp_counters* counters = arg;
00163 EXPECT_RETX(arg != NULL, ERR_OK);
00164 EXPECT_RETX(pcb != NULL, ERR_OK);
00165 EXPECT_RETX(err == ERR_OK, ERR_OK);
00166
00167 if (p != NULL) {
00168 if (counters->close_calls == 0) {
00169 counters->recv_calls++;
00170 test_tcp_counters_check_rxdata(counters, p);
00171 counters->recved_bytes += p->tot_len;
00172 } else {
00173 counters->recv_calls_after_close++;
00174 counters->recved_bytes_after_close += p->tot_len;
00175 }
00176 pbuf_free(p);
00177 } else {
00178 counters->close_calls++;
00179 }
00180 EXPECT(counters->recv_calls_after_close == 0 && counters->recved_bytes_after_close == 0);
00181 return ERR_OK;
00182 }
00183
00184
00185 struct tcp_pcb*
00186 test_tcp_new_counters_pcb(struct test_tcp_counters* counters)
00187 {
00188 struct tcp_pcb* pcb = tcp_new();
00189 if (pcb != NULL) {
00190
00191 tcp_arg(pcb, counters);
00192 tcp_recv(pcb, test_tcp_counters_recv);
00193 tcp_err(pcb, test_tcp_counters_err);
00194 }
00195 return pcb;
00196 }