LwIP 2.2.1在STM32F407VET6平台 移植

ThirdParty/lwip-2.2.1/test/unit/tcp/tcp_helper.c

@@ -0,0 +1,325 @@
+#include "tcp_helper.h"
+
+#include "lwip/priv/tcp_priv.h"
+#include "lwip/stats.h"
+#include "lwip/pbuf.h"
+#include "lwip/inet.h"
+#include "lwip/inet_chksum.h"
+#include "lwip/ip_addr.h"
+
+#if !LWIP_STATS || !TCP_STATS || !MEMP_STATS
+#error "This tests needs TCP- and MEMP-statistics enabled"
+#endif
+
+const ip_addr_t test_local_ip = IPADDR4_INIT_BYTES(192, 168, 1, 1);
+const ip_addr_t test_remote_ip = IPADDR4_INIT_BYTES(192, 168, 1, 2);
+const ip_addr_t test_netmask = IPADDR4_INIT_BYTES(255, 255, 255, 0);
+
+/** Remove all pcbs on the given list. */
+static void
+tcp_remove(struct tcp_pcb* pcb_list)
+{
+  struct tcp_pcb *pcb = pcb_list;
+  struct tcp_pcb *pcb2;
+
+  while(pcb != NULL) {
+    pcb2 = pcb;
+    pcb = pcb->next;
+    if (pcb2->state == LISTEN) {
+      tcp_close(pcb2);
+    } else {
+      tcp_abort(pcb2);
+    }
+  }
+}
+
+/** Remove all pcbs on listen-, active- and time-wait-list (bound- isn't exported). */
+void
+tcp_remove_all(void)
+{
+  tcp_remove(tcp_listen_pcbs.pcbs);
+  tcp_remove(tcp_bound_pcbs);
+  tcp_remove(tcp_active_pcbs);
+  tcp_remove(tcp_tw_pcbs);
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 0);
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_SEG) == 0);
+  fail_unless(MEMP_STATS_GET(used, MEMP_PBUF_POOL) == 0);
+}
+
+/** Create a TCP segment usable for passing to tcp_input */
+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, u16_t wnd)
+{
+  struct pbuf *p, *q;
+  struct ip_hdr* iphdr;
+  struct tcp_hdr* tcphdr;
+  u16_t pbuf_len = (u16_t)(sizeof(struct ip_hdr) + sizeof(struct tcp_hdr) + data_len);
+  LWIP_ASSERT("data_len too big", data_len <= 0xFFFF);
+
+  p = pbuf_alloc(PBUF_RAW, pbuf_len, PBUF_POOL);
+  EXPECT_RETNULL(p != NULL);
+  /* first pbuf must be big enough to hold the headers */
+  EXPECT_RETNULL(p->len >= (sizeof(struct ip_hdr) + sizeof(struct tcp_hdr)));
+  if (data_len > 0) {
+    /* first pbuf must be big enough to hold at least 1 data byte, too */
+    EXPECT_RETNULL(p->len > (sizeof(struct ip_hdr) + sizeof(struct tcp_hdr)));
+  }
+
+  for(q = p; q != NULL; q = q->next) {
+    memset(q->payload, 0, q->len);
+  }
+
+  iphdr = (struct ip_hdr*)p->payload;
+  /* fill IP header */
+  iphdr->dest.addr = ip_2_ip4(dst_ip)->addr;
+  iphdr->src.addr = ip_2_ip4(src_ip)->addr;
+  IPH_VHL_SET(iphdr, 4, IP_HLEN / 4);
+  IPH_TOS_SET(iphdr, 0);
+  IPH_LEN_SET(iphdr, htons(p->tot_len));
+  IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
+
+  /* let p point to TCP header */
+  pbuf_header(p, -(s16_t)sizeof(struct ip_hdr));
+
+  tcphdr = (struct tcp_hdr*)p->payload;
+  tcphdr->src   = htons(src_port);
+  tcphdr->dest  = htons(dst_port);
+  tcphdr->seqno = htonl(seqno);
+  tcphdr->ackno = htonl(ackno);
+  TCPH_HDRLEN_SET(tcphdr, sizeof(struct tcp_hdr)/4);
+  TCPH_FLAGS_SET(tcphdr, headerflags);
+  tcphdr->wnd   = htons(wnd);
+
+  if (data_len > 0) {
+    /* let p point to TCP data */
+    pbuf_header(p, -(s16_t)sizeof(struct tcp_hdr));
+    /* copy data */
+    pbuf_take(p, data, (u16_t)data_len);
+    /* let p point to TCP header again */
+    pbuf_header(p, sizeof(struct tcp_hdr));
+  }
+
+  /* calculate checksum */
+
+  tcphdr->chksum = ip_chksum_pseudo(p,
+          IP_PROTO_TCP, p->tot_len, src_ip, dst_ip);
+
+  pbuf_header(p, sizeof(struct ip_hdr));
+
+  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, const ip_addr_t* local_ip,
+                   const ip_addr_t* remote_ip, u16_t local_port, u16_t remote_port)
+{
+  u32_t iss;
+
+  /* @todo: are these all states? */
+  /* @todo: remove from previous list */
+  pcb->state = state;
+  
+  iss = tcp_next_iss(pcb);
+  pcb->snd_wl2 = iss;
+  pcb->snd_nxt = iss;
+  pcb->lastack = iss;
+  pcb->snd_lbb = iss;
+  
+  if (state == ESTABLISHED) {
+    TCP_REG(&tcp_active_pcbs, pcb);
+    ip_addr_copy(pcb->local_ip, *local_ip);
+    pcb->local_port = local_port;
+    ip_addr_copy(pcb->remote_ip, *remote_ip);
+    pcb->remote_port = remote_port;
+  } else if(state == LISTEN) {
+    TCP_REG(&tcp_listen_pcbs.pcbs, pcb);
+    ip_addr_copy(pcb->local_ip, *local_ip);
+    pcb->local_port = local_port;
+  } else if(state == TIME_WAIT) {
+    TCP_REG(&tcp_tw_pcbs, pcb);
+    ip_addr_copy(pcb->local_ip, *local_ip);
+    pcb->local_port = local_port;
+    ip_addr_copy(pcb->remote_ip, *remote_ip);
+    pcb->remote_port = remote_port;
+  } else {
+    fail();
+  }
+}
+
+void
+test_tcp_counters_err(void* arg, err_t err)
+{
+  struct test_tcp_counters* counters = (struct test_tcp_counters*)arg;
+  EXPECT_RET(arg != NULL);
+  counters->err_calls++;
+  counters->last_err = err;
+}
+
+static void
+test_tcp_counters_check_rxdata(struct test_tcp_counters* counters, struct pbuf* p)
+{
+  struct pbuf* q;
+  u32_t i, received;
+  if(counters->expected_data == NULL) {
+    /* no data to compare */
+    return;
+  }
+  EXPECT_RET(counters->recved_bytes + p->tot_len <= counters->expected_data_len);
+  received = counters->recved_bytes;
+  for(q = p; q != NULL; q = q->next) {
+    char *data = (char*)q->payload;
+    for(i = 0; i < q->len; i++) {
+      EXPECT_RET(data[i] == counters->expected_data[received]);
+      received++;
+    }
+  }
+  EXPECT(received == counters->recved_bytes + p->tot_len);
+}
+
+err_t
+test_tcp_counters_recv(void* arg, struct tcp_pcb* pcb, struct pbuf* p, err_t err)
+{
+  struct test_tcp_counters* counters = (struct test_tcp_counters*)arg;
+  EXPECT_RETX(arg != NULL, ERR_OK);
+  EXPECT_RETX(pcb != NULL, ERR_OK);
+  EXPECT_RETX(err == ERR_OK, ERR_OK);
+
+  if (p != NULL) {
+    if (counters->close_calls == 0) {
+      counters->recv_calls++;
+      test_tcp_counters_check_rxdata(counters, p);
+      counters->recved_bytes += p->tot_len;
+    } else {
+      counters->recv_calls_after_close++;
+      counters->recved_bytes_after_close += p->tot_len;
+    }
+    pbuf_free(p);
+  } else {
+    counters->close_calls++;
+  }
+  EXPECT(counters->recv_calls_after_close == 0 && counters->recved_bytes_after_close == 0);
+  return ERR_OK;
+}
+
+/** Allocate a pcb and set up the test_tcp_counters_* callbacks */
+struct tcp_pcb*
+test_tcp_new_counters_pcb(struct test_tcp_counters* counters)
+{
+  struct tcp_pcb* pcb = tcp_new();
+  if (pcb != NULL) {
+    /* set up args and callbacks */
+    tcp_arg(pcb, counters);
+    tcp_recv(pcb, test_tcp_counters_recv);
+    tcp_err(pcb, test_tcp_counters_err);
+    pcb->snd_wnd = TCP_WND;
+    pcb->snd_wnd_max = TCP_WND;
+  }
+  return pcb;
+}
+
+/** Calls tcp_input() after adjusting current_iphdr_dest */
+void test_tcp_input(struct pbuf *p, struct netif *inp)
+{
+  struct ip_hdr *iphdr = (struct ip_hdr*)p->payload;
+  /* these lines are a hack, don't use them as an example :-) */
+  ip_addr_copy_from_ip4(*ip_current_dest_addr(), iphdr->dest);
+  ip_addr_copy_from_ip4(*ip_current_src_addr(), iphdr->src);
+  ip_current_netif() = inp;
+  ip_data.current_ip4_header = iphdr;
+  ip_data.current_input_netif = inp;
+
+  /* since adding IPv6, p->payload must point to tcp header, not ip header */
+  pbuf_header(p, -(s16_t)sizeof(struct ip_hdr));
+
+  tcp_input(p, inp);
+
+  ip_addr_set_zero(ip_current_dest_addr());
+  ip_addr_set_zero(ip_current_src_addr());
+  ip_current_netif() = NULL;
+  ip_data.current_ip4_header = NULL;
+}
+
+static err_t test_tcp_netif_output(struct netif *netif, struct pbuf *p,
+       const ip4_addr_t *ipaddr)
+{
+  struct test_tcp_txcounters *txcounters = (struct test_tcp_txcounters*)netif->state;
+  LWIP_UNUSED_ARG(ipaddr);
+  if (txcounters != NULL)
+  {
+    txcounters->num_tx_calls++;
+    txcounters->num_tx_bytes += p->tot_len;
+    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;
+}
+
+void test_tcp_init_netif(struct netif *netif, struct test_tcp_txcounters *txcounters,
+                         const ip_addr_t *ip_addr, const ip_addr_t *netmask)
+{
+  struct netif *n;
+  memset(netif, 0, sizeof(struct netif));
+  if (txcounters != NULL) {
+    memset(txcounters, 0, sizeof(struct test_tcp_txcounters));
+    netif->state = txcounters;
+  }
+  netif->output = test_tcp_netif_output;
+  netif->flags |= NETIF_FLAG_UP | NETIF_FLAG_LINK_UP;
+  ip_addr_copy_from_ip4(netif->netmask, *ip_2_ip4(netmask));
+  ip_addr_copy_from_ip4(netif->ip_addr, *ip_2_ip4(ip_addr));
+  for (n = netif_list; n != NULL; n = n->next) {
+    if (n == netif) {
+      return;
+    }
+  }
+  netif->next = NULL;
+  netif_list = netif;
+}

ThirdParty/lwip-2.2.1/test/unit/tcp/tcp_helper.h

@@ -0,0 +1,58 @@
+#ifndef LWIP_HDR_TCP_HELPER_H
+#define LWIP_HDR_TCP_HELPER_H
+
+#include "../lwip_check.h"
+#include "lwip/arch.h"
+#include "lwip/tcp.h"
+#include "lwip/netif.h"
+
+/* counters used for test_tcp_counters_* callback functions */
+struct test_tcp_counters {
+  u32_t recv_calls;
+  u32_t recved_bytes;
+  u32_t recv_calls_after_close;
+  u32_t recved_bytes_after_close;
+  u32_t close_calls;
+  u32_t err_calls;
+  err_t last_err;
+  char* expected_data;
+  u32_t expected_data_len;
+};
+
+struct test_tcp_txcounters {
+  u32_t num_tx_calls;
+  u32_t num_tx_bytes;
+  u8_t  copy_tx_packets;
+  struct pbuf *tx_packets;
+};
+
+extern const ip_addr_t test_local_ip;
+extern const ip_addr_t test_remote_ip;
+extern const ip_addr_t test_netmask;
+#define TEST_REMOTE_PORT    0x100
+#define TEST_LOCAL_PORT     0x101
+
+/* Helper functions */
+void tcp_remove_all(void);
+
+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);
+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);
+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);
+void tcp_set_state(struct tcp_pcb* pcb, enum tcp_state state, const ip_addr_t* local_ip,
+                   const ip_addr_t* remote_ip, u16_t local_port, u16_t remote_port);
+void test_tcp_counters_err(void* arg, err_t err);
+err_t test_tcp_counters_recv(void* arg, struct tcp_pcb* pcb, struct pbuf* p, err_t err);
+
+struct tcp_pcb* test_tcp_new_counters_pcb(struct test_tcp_counters* counters);
+
+void test_tcp_input(struct pbuf *p, struct netif *inp);
+
+void test_tcp_init_netif(struct netif *netif, struct test_tcp_txcounters *txcounters,
+                         const ip_addr_t *ip_addr, const ip_addr_t *netmask);
+
+
+#endif

ThirdParty/lwip-2.2.1/test/unit/tcp/test_tcp.h

@@ -0,0 +1,8 @@
+#ifndef LWIP_HDR_TEST_TCP_H
+#define LWIP_HDR_TEST_TCP_H
+
+#include "../lwip_check.h"
+
+Suite *tcp_suite(void);
+
+#endif

ThirdParty/lwip-2.2.1/test/unit/tcp/test_tcp_oos.h

@@ -0,0 +1,8 @@
+#ifndef LWIP_HDR_TEST_TCP_OOS_H
+#define LWIP_HDR_TEST_TCP_OOS_H
+
+#include "../lwip_check.h"
+
+Suite *tcp_oos_suite(void);
+
+#endif

ThirdParty/lwip-2.2.1/test/unit/tcp/test_tcp_state.c

@@ -0,0 +1,665 @@
+#include "test_tcp_state.h"
+
+#include "lwip/priv/tcp_priv.h"
+#include "lwip/stats.h"
+#include "tcp_helper.h"
+#include "lwip/inet_chksum.h"
+
+#ifdef _MSC_VER
+#pragma warning(disable: 4307) /* we explicitly wrap around TCP seqnos */
+#endif
+
+#if !LWIP_STATS || !TCP_STATS || !MEMP_STATS
+#error "This tests needs TCP- and MEMP-statistics enabled"
+#endif
+
+static struct netif test_netif = {0};
+static struct test_tcp_txcounters test_txcounters = {0};
+
+#define SEQNO1 (0xFFFFFF00 - TCP_MSS)
+#define ISS    6510
+static u8_t test_tcp_timer;
+
+/* our own version of tcp_tmr so we can reset fast/slow timer state */
+static void
+test_tcp_tmr(void)
+{
+  tcp_fasttmr();
+  if (++test_tcp_timer & 1) {
+    tcp_slowtmr();
+  }
+}
+
+/* Get TCP flags from packets */
+static u8_t 
+get_tcp_flags_from_packet(struct pbuf *p, u16_t tcp_hdr_offset)
+{
+  struct tcp_hdr tcphdr;
+  u16_t ret;
+  EXPECT_RETX(p != NULL, 0);
+  EXPECT_RETX(p->len >= tcp_hdr_offset + sizeof(struct tcp_hdr), 0);
+  ret = pbuf_copy_partial(p, &tcphdr, sizeof(struct tcp_hdr), tcp_hdr_offset);
+  EXPECT(ret == sizeof(struct tcp_hdr));
+  return TCPH_FLAGS(&tcphdr);
+}
+
+/* Create listening tcp_pcb */
+static struct tcp_pcb_listen *
+create_listening_pcb(u16_t local_port, struct test_tcp_counters *counters)
+{
+  struct tcp_pcb *pcb;
+  struct tcp_pcb_listen *lpcb=NULL;
+  err_t err;
+  u16_t port = local_port?local_port:1234;
+
+  if (counters) {
+    pcb = test_tcp_new_counters_pcb(counters);
+  } else {
+    pcb = tcp_new();
+  }
+  EXPECT(pcb != NULL);
+
+  if (pcb) {
+    err = tcp_bind(pcb, &test_netif.ip_addr, port);
+    EXPECT(err == ERR_OK);
+    lpcb = (struct tcp_pcb_listen *)tcp_listen(pcb);
+  }
+
+  return lpcb;
+}
+
+/* Setup/teardown functions */
+static struct netif* old_netif_list;
+static struct netif* old_netif_default;
+
+static void
+tcp_state_setup(void)
+{
+  struct tcp_pcb dummy_pcb; /* we need this for tcp_next_iss() only */
+
+  /* reset iss to default (6510) */
+  tcp_ticks = 0;
+  tcp_ticks = 0 - (tcp_next_iss(&dummy_pcb) - 6510);
+  tcp_next_iss(&dummy_pcb);
+  tcp_ticks = 0;
+
+  test_tcp_timer = 0;
+
+  old_netif_list = netif_list;
+  old_netif_default = netif_default;
+  netif_list = NULL;
+  netif_default = NULL;
+  tcp_remove_all();
+  test_tcp_init_netif(&test_netif, &test_txcounters, &test_local_ip, &test_netmask);
+  lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
+}
+
+static void
+tcp_state_teardown(void)
+{
+  netif_list = NULL;
+  netif_default = NULL;
+  tcp_remove_all();
+  /* restore netif_list for next tests (e.g. loopif) */
+  netif_list = old_netif_list;
+  netif_default = old_netif_default;
+  lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
+}
+
+/* helper functions */
+
+static void 
+test_rst_generation_with_incoming_packet(struct pbuf *p,
+  struct netif *netif, struct test_tcp_txcounters *tx_counters)
+{
+  u16_t tcp_flags;
+  EXPECT_RET(p != NULL);
+  memset(tx_counters, 0, sizeof(struct test_tcp_txcounters));
+  /* pass the segment to tcp_input */
+  tx_counters->copy_tx_packets = 1;
+  test_tcp_input(p, netif);
+  tx_counters->copy_tx_packets = 0;
+  /* check if packets are as expected */
+  EXPECT(tx_counters->tx_packets != NULL);
+  if (tx_counters->tx_packets) {
+    tcp_flags = get_tcp_flags_from_packet(tx_counters->tx_packets, 20);
+    EXPECT(tcp_flags & TCP_RST);
+    pbuf_free(tx_counters->tx_packets);
+    tx_counters->tx_packets = NULL;
+  }
+}
+
+/* Test functions */
+
+/* Call tcp_new() and test memp stats (max number) */
+START_TEST(test_tcp_new_max_num)
+{
+  struct tcp_pcb* pcb[MEMP_NUM_TCP_PCB + 1];
+  int i;
+  LWIP_UNUSED_ARG(_i);
+
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+
+  for(i = 0;i < MEMP_NUM_TCP_PCB; i++) {
+    pcb[i] = tcp_new();
+    fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == (i + 1));
+  }
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == MEMP_NUM_TCP_PCB);
+  /* Trying to remove the oldest pcb in TIME_WAIT,LAST_ACK,CLOSING state when pcb full */
+  pcb[MEMP_NUM_TCP_PCB] = tcp_new();
+  fail_unless(pcb[MEMP_NUM_TCP_PCB] == NULL);
+  tcp_set_state(pcb[0], TIME_WAIT, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+  pcb[MEMP_NUM_TCP_PCB] = tcp_new();
+  fail_unless(pcb[MEMP_NUM_TCP_PCB] != NULL);
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == MEMP_NUM_TCP_PCB);
+
+  for (i = 1; i <= MEMP_NUM_TCP_PCB; i++)
+  {
+    tcp_abort(pcb[i]);
+  }
+  fail_unless(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+}
+END_TEST
+
+
+/* pcbs in TIME_WAIT state will be deleted when creating new pcb reach the max number */
+START_TEST(test_tcp_new_max_num_remove_TIME_WAIT)
+{
+  struct tcp_pcb* pcb;
+  struct tcp_pcb* pcb_list[MEMP_NUM_TCP_PCB + 1];
+  int i;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create a pcb in TIME_WAIT state */
+  pcb = tcp_new();
+  EXPECT_RET(pcb != NULL);
+  tcp_set_state(pcb, TIME_WAIT, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  EXPECT_RET(pcb->state == TIME_WAIT);
+
+  /* Create max number pcbs */
+  for(i = 0;i < MEMP_NUM_TCP_PCB-1; i++) {
+    pcb_list[i] = tcp_new();
+    EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == (i + 2));
+  }
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == MEMP_NUM_TCP_PCB);
+
+  /* Create one more pcb, and expect that the pcb in the TIME_WAIT state is deleted */
+  pcb_list[MEMP_NUM_TCP_PCB-1] = tcp_new();
+  EXPECT_RET(pcb_list[MEMP_NUM_TCP_PCB-1] != NULL);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == MEMP_NUM_TCP_PCB);
+
+  for (i = 0; i <= MEMP_NUM_TCP_PCB-1; i++)
+  {
+    tcp_abort(pcb_list[i]);
+  }
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+
+}
+END_TEST
+
+
+/* Call tcp_connect to check active open */
+START_TEST(test_tcp_connect_active_open)
+{
+  struct test_tcp_counters counters;
+  struct tcp_pcb *pcb;
+  struct pbuf *p;
+  err_t err;
+  u16_t test_port = 1234;
+  u32_t seqno = 0;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize the pcb */
+  tcp_ticks = SEQNO1 - ISS;
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  
+  /* Get seqno from SYN packet */
+  test_txcounters.copy_tx_packets = 1;
+  err = tcp_connect(pcb, &test_remote_ip, test_port, NULL);
+  test_txcounters.copy_tx_packets = 0;
+  EXPECT(err == ERR_OK);
+  EXPECT(pcb->state == SYN_SENT);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+  EXPECT_RET(test_txcounters.tx_packets != NULL);
+  if (test_txcounters.tx_packets != NULL) {
+    struct tcp_hdr tcphdr;
+    u16_t ret;
+    ret = pbuf_copy_partial(test_txcounters.tx_packets, &tcphdr, 20, 20);
+    EXPECT(ret == 20);
+    EXPECT(TCPH_FLAGS(&tcphdr) & TCP_SYN);
+    pbuf_free(test_txcounters.tx_packets);
+    test_txcounters.tx_packets = NULL;
+    seqno = lwip_htonl(tcphdr.seqno);
+    EXPECT(seqno == pcb->lastack);
+  }
+
+  /* check correct syn packet */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, test_port,
+    pcb->local_port, NULL, 0, 12345, seqno + 1, TCP_SYN|TCP_ACK);
+  EXPECT_RET(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT_RET(pcb->state == ESTABLISHED);
+  EXPECT_RET(test_txcounters.num_tx_calls == 2);
+
+  /* make sure the pcb is freed */
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  tcp_abort(pcb);
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+}
+END_TEST
+
+START_TEST(test_tcp_active_close)
+{
+  struct tcp_pcb *pcb, *pcbl;
+  struct test_tcp_counters counters;
+  struct pbuf *p;
+  err_t err;
+  u32_t i;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create TCP in LISTEN state */
+  memset(&counters, 0, sizeof(counters));
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  err = tcp_bind(pcb, &test_netif.ip_addr, 1234);
+  EXPECT_RET(err == ERR_OK);
+  pcbl = tcp_listen(pcb);
+  EXPECT_RET(pcbl != NULL);
+  EXPECT_RET(pcbl->state == LISTEN);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 1);
+
+  memset(&test_txcounters, 0, sizeof(test_txcounters));
+  err = tcp_close(pcbl);
+  EXPECT_RET(err == ERR_OK);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 0);
+  EXPECT(test_txcounters.num_tx_calls == 0);
+
+  /* close TCP in SYN_SENT state */
+  memset(&counters, 0, sizeof(counters));
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  err = tcp_connect(pcb, &test_netif.gw, 1234, NULL);
+  EXPECT_RET(err == ERR_OK);
+  EXPECT_RET(pcb->state == SYN_SENT);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+
+  memset(&test_txcounters, 0, sizeof(test_txcounters));
+  err = tcp_close(pcb);
+  EXPECT_RET(err == ERR_OK);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+  EXPECT(test_txcounters.num_tx_calls == 0);
+
+  /* close TCP in ESTABLISHED state */
+  memset(&counters, 0, sizeof(counters));
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  tcp_set_state(pcb, ESTABLISHED, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+
+  memset(&test_txcounters, 0, sizeof(test_txcounters));
+  err = tcp_close(pcb);
+  EXPECT_RET(err == ERR_OK);
+  EXPECT_RET(pcb->state == FIN_WAIT_1);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  /* test_tcp_tmr(); */
+  EXPECT(test_txcounters.num_tx_calls == 1);
+  /* create a segment ACK and pass it to tcp_input */
+  p = tcp_create_rx_segment(pcb, NULL, 0, 0, 1, TCP_ACK);
+  EXPECT_RET(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT_RET(pcb->state == FIN_WAIT_2);
+  /* create a segment FIN and pass it to tcp_input */
+  p = tcp_create_rx_segment(pcb, NULL, 0, 0, 0, TCP_FIN);
+  EXPECT_RET(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT_RET(pcb->state == TIME_WAIT);
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  for (i = 0; i < 2 * TCP_MSL / TCP_TMR_INTERVAL + 1; i++) {
+    test_tcp_tmr();
+  }
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+}
+END_TEST
+
+START_TEST(test_tcp_imultaneous_close)
+{
+  struct test_tcp_counters counters;
+  struct tcp_pcb* pcb;
+  struct pbuf* p;
+  char data = 0x0f;
+  err_t err;
+  u32_t i;
+  LWIP_UNUSED_ARG(_i);
+
+  /* initialize counter struct */
+  memset(&counters, 0, sizeof(counters));
+  counters.expected_data_len = 1;
+  counters.expected_data = &data;
+
+  /* create and initialize the pcb */
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  tcp_set_state(pcb, ESTABLISHED, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+  err = tcp_close(pcb);
+  EXPECT_RET(err == ERR_OK);
+  EXPECT_RET(pcb->state == FIN_WAIT_1);
+  /* create a FIN segment */
+  p = tcp_create_rx_segment(pcb, &data, 0, 0, 0, TCP_FIN);
+  EXPECT(p != NULL);
+  if (p != NULL) {
+    test_tcp_input(p, &test_netif);
+  }
+  EXPECT_RET(pcb->state == CLOSING);
+  /* create an ACK segment */
+  p = tcp_create_rx_segment(pcb, &data, 0, 0, 1, TCP_ACK);
+  EXPECT(p != NULL);
+  if (p != NULL) {
+    test_tcp_input(p, &test_netif);
+  }
+  EXPECT_RET(pcb->state == TIME_WAIT);
+  for (i = 0; i < 2 * TCP_MSL / TCP_TMR_INTERVAL + 1; i++) {
+    test_tcp_tmr();
+  }
+  EXPECT_RET(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+}
+END_TEST
+
+
+/* RST was generated when receive any incoming segment in CLOSED state */
+START_TEST(test_tcp_gen_rst_in_CLOSED)
+{
+  struct pbuf *p;
+  ip_addr_t src_addr = test_remote_ip;
+  ip_addr_t dst_addr = test_local_ip;
+  LWIP_UNUSED_ARG(_i);
+
+  /* Do not create any pcb */
+
+  /* create a segment */
+  p = tcp_create_segment(&src_addr, &dst_addr, TEST_REMOTE_PORT,
+    TEST_LOCAL_PORT, NULL, 0, 12345, 54321, TCP_ACK);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+
+}
+END_TEST
+
+/* RST was generated when receive ACK in LISTEN state */
+START_TEST(test_tcp_gen_rst_in_LISTEN)
+{
+  struct tcp_pcb_listen *lpcb;
+  struct pbuf *p;
+  ip_addr_t src_addr = test_remote_ip;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create a pcb in LISTEN state */
+  lpcb = create_listening_pcb(TEST_LOCAL_PORT, NULL);
+  EXPECT_RET(lpcb != NULL);
+
+  /* create a segment */
+  p = tcp_create_segment(&src_addr,&lpcb->local_ip, TEST_REMOTE_PORT,
+    lpcb->local_port, NULL, 0, 12345, 54321, TCP_ACK);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+
+  /* the PCB still in LISTEN state */
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 1);
+  if (MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) != 0) {
+    /* can not use tcp_abort() */
+    tcp_close((struct tcp_pcb *)lpcb);
+  }
+
+}
+END_TEST
+
+
+/* RST was generated when receive an SYN in TIME_WAIT state */
+START_TEST(test_tcp_gen_rst_in_TIME_WAIT)
+{
+  struct tcp_pcb *pcb;
+  struct pbuf *p;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create a pcb in LISTEN state */
+  pcb = tcp_new();
+  EXPECT_RET(pcb != NULL);
+  tcp_set_state(pcb, TIME_WAIT, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+
+  /* create a segment */
+  p = tcp_create_rx_segment(pcb, NULL, 0, 0, 0, TCP_SYN);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  EXPECT(pcb->state == TIME_WAIT);
+}
+END_TEST
+
+/* receive TCP_RST with different seqno */
+START_TEST(test_tcp_process_rst_seqno)
+{
+  struct test_tcp_counters counters;
+  struct tcp_pcb *pcb;
+  struct pbuf *p;
+  err_t err;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize a pcb in SYN_SENT state */
+  memset(&counters, 0, sizeof(counters));
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  err = tcp_connect(pcb, &test_remote_ip, TEST_REMOTE_PORT, NULL);
+  EXPECT_RET(err == ERR_OK);
+
+  /* a RST segment with incorrect seqno will not be accepted */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, TEST_REMOTE_PORT,
+    pcb->local_port, NULL, 0, 12345,  pcb->snd_nxt-10, TCP_RST);
+  EXPECT(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT(counters.err_calls == 0);
+
+  /* a RST segment with correct seqno will be accepted */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, TEST_REMOTE_PORT,
+    pcb->local_port, NULL, 0, 12345,  pcb->snd_nxt, TCP_RST);
+  EXPECT(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT(counters.err_calls == 1);
+  counters.err_calls = 0;
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+
+  /* create another pcb in ESTABLISHED state */
+  memset(&counters, 0, sizeof(counters));
+  pcb = test_tcp_new_counters_pcb(&counters);
+  EXPECT_RET(pcb != NULL);
+  tcp_set_state(pcb, ESTABLISHED, &test_local_ip, &test_remote_ip, TEST_LOCAL_PORT, TEST_REMOTE_PORT);
+
+  /* a RST segment with incorrect seqno will not be accepted */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port,
+    pcb->local_port, NULL, 0, pcb->rcv_nxt-10, 54321, TCP_RST);
+  EXPECT(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT(counters.err_calls == 0);
+
+  /* a RST segment with correct seqno will be accepted */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, TEST_REMOTE_PORT,
+    pcb->local_port, NULL, 0, pcb->rcv_nxt, 54321, TCP_RST);
+  EXPECT(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT(counters.err_calls == 1);
+  counters.err_calls = 0;
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+
+}
+END_TEST
+
+/* RST was generated when receive an SYN+ACK with incorrect ACK number in SYN_SENT state */
+START_TEST(test_tcp_gen_rst_in_SYN_SENT_ackseq)
+{
+  struct tcp_pcb *pcb;
+  struct pbuf *p;
+  u16_t test_port = 1234;
+  err_t err;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize a pcb in listen state */
+  pcb = tcp_new();
+  EXPECT_RET(pcb != NULL);
+  err = tcp_connect(pcb, &test_remote_ip, test_port, NULL);
+  EXPECT_RET(err == ERR_OK);
+
+  /* create a SYN+ACK segment with incorrect seqno */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port,
+    pcb->local_port, NULL, 0, 12345,  pcb->lastack-10, TCP_SYN|TCP_ACK);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+
+  /* LWIP: send RST then re-send SYN immediately */
+  EXPECT(test_txcounters.num_tx_calls == 2);
+
+}
+END_TEST
+
+/* RST was generated when receive an ACK without SYN in SYN_SENT state */
+START_TEST(test_tcp_gen_rst_in_SYN_SENT_non_syn_ack)
+{
+  struct tcp_pcb *pcb;
+  struct pbuf *p;
+  u16_t test_port = 1234;
+  err_t err;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize a pcb in listen state */
+  pcb = tcp_new();
+  EXPECT_RET(pcb != NULL);
+  err = tcp_connect(pcb, &test_remote_ip, test_port, NULL);
+  EXPECT_RET(err == ERR_OK);
+
+  /* create a SYN+ACK segment with incorrect seqno */
+  p = tcp_create_segment(&pcb->remote_ip, &pcb->local_ip, pcb->remote_port,
+    pcb->local_port, NULL, 0, 12345,  pcb->lastack, TCP_ACK);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+
+  /* LWIP: send RST then re-send SYN immediately */
+  EXPECT(test_txcounters.num_tx_calls == 2);
+
+}
+END_TEST
+
+/* RST was generated when receive an ACK with incorrect seqno in SYN_RCVD state */
+START_TEST(test_tcp_gen_rst_in_SYN_RCVD)
+{
+  struct tcp_pcb_listen *lpcb;
+  struct pbuf *p;
+  u32_t ack_seqno = 0;
+  ip_addr_t src_addr = test_remote_ip;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize a pcb in listen state */
+  lpcb = create_listening_pcb(TEST_LOCAL_PORT, NULL);
+  EXPECT_RET(lpcb != NULL);
+
+  /* LISTEN -> SYN_RCVD */
+  p = tcp_create_segment(&src_addr, &lpcb->local_ip, TEST_REMOTE_PORT,
+    lpcb->local_port, NULL, 0, 1000, 54321, TCP_SYN);
+  EXPECT(p != NULL);
+  memset(&test_txcounters, 0, sizeof(struct test_tcp_txcounters));
+  test_tcp_input(p, &test_netif);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  if (MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1) {
+    ack_seqno = tcp_active_pcbs[0].lastack;
+  }
+
+  /* create a ACK segment with incorrect seqno */
+  p = tcp_create_segment(&src_addr, &lpcb->local_ip, TEST_REMOTE_PORT,
+    lpcb->local_port, NULL, 0, 1001, ack_seqno+1111, TCP_ACK);
+  EXPECT(p != NULL);
+  test_rst_generation_with_incoming_packet(p, &test_netif, &test_txcounters);
+  EXPECT(test_txcounters.num_tx_calls == 1);
+
+  /* the active pcb still exists */
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 1);
+  if (MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) != 0) {
+    /* can not use tcp_abort() */
+    tcp_close((struct tcp_pcb *)lpcb);
+  }
+}
+END_TEST
+
+/* a listen pcb returns to LISTEN from SYN_RCVD when RST received */
+START_TEST(test_tcp_receive_rst_SYN_RCVD_to_LISTEN)
+{
+  struct tcp_pcb_listen *lpcb;
+  struct pbuf *p;
+  u16_t tcp_flags;
+  ip_addr_t src_addr = test_remote_ip;
+  LWIP_UNUSED_ARG(_i);
+
+  /* create and initialize a pcb in listen state */
+  lpcb = create_listening_pcb(TEST_LOCAL_PORT, NULL);
+  EXPECT_RET(lpcb != NULL);
+
+  /* create a SYN segment */
+  p = tcp_create_segment(&src_addr, &lpcb->local_ip, TEST_REMOTE_PORT,
+    lpcb->local_port, NULL, 0, 1000, 54321, TCP_SYN);
+  EXPECT(p != NULL);
+  /* pass the segment to tcp_input */
+  memset(&test_txcounters, 0, sizeof(struct test_tcp_txcounters));
+  test_txcounters.copy_tx_packets = 1;
+  test_tcp_input(p, &test_netif);
+  test_txcounters.copy_tx_packets = 0;
+  /* check if packets are as expected */
+  EXPECT(test_txcounters.num_tx_calls == 1);
+  tcp_flags = get_tcp_flags_from_packet(test_txcounters.tx_packets, 20);
+  pbuf_free(test_txcounters.tx_packets);
+  test_txcounters.tx_packets = NULL;
+  EXPECT((tcp_flags & TCP_SYN) && (tcp_flags & TCP_ACK));
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 1);
+
+  /* create a RST segment */
+  p = tcp_create_segment(&src_addr, &lpcb->local_ip, TEST_REMOTE_PORT,
+    lpcb->local_port, NULL, 0, 1001, 54321, TCP_RST);
+  EXPECT(p != NULL);
+  test_tcp_input(p, &test_netif);
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB) == 0);
+  EXPECT(MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) == 1);
+
+  if (MEMP_STATS_GET(used, MEMP_TCP_PCB_LISTEN) != 0) {
+    /* can not use tcp_abort() */
+    tcp_close((struct tcp_pcb *)lpcb);
+  }
+}
+END_TEST
+
+/** Create the suite including all tests for this module */
+Suite *
+tcp_state_suite(void)
+{
+  testfunc tests[] = {
+    TESTFUNC(test_tcp_new_max_num),
+    TESTFUNC(test_tcp_new_max_num_remove_TIME_WAIT),
+    TESTFUNC(test_tcp_connect_active_open),
+    TESTFUNC(test_tcp_active_close),
+    TESTFUNC(test_tcp_imultaneous_close),
+    TESTFUNC(test_tcp_gen_rst_in_CLOSED),
+    TESTFUNC(test_tcp_gen_rst_in_LISTEN),
+    TESTFUNC(test_tcp_gen_rst_in_TIME_WAIT),
+    TESTFUNC(test_tcp_process_rst_seqno),
+    TESTFUNC(test_tcp_gen_rst_in_SYN_SENT_ackseq),
+    TESTFUNC(test_tcp_gen_rst_in_SYN_SENT_non_syn_ack),
+    TESTFUNC(test_tcp_gen_rst_in_SYN_RCVD),
+    TESTFUNC(test_tcp_receive_rst_SYN_RCVD_to_LISTEN),
+  };
+  return create_suite("TCP_STATE", tests, sizeof(tests) / sizeof(testfunc), tcp_state_setup, tcp_state_teardown);
+}

ThirdParty/lwip-2.2.1/test/unit/tcp/test_tcp_state.h

@@ -0,0 +1,8 @@
+#ifndef LWIP_HDR_TEST_TCP_STATE_H
+#define LWIP_HDR_TEST_TCP_STATE_H
+
+#include "../lwip_check.h"
+
+Suite *tcp_state_suite(void);
+
+#endif