diff --git a/components/lwip/core/init.c b/components/lwip/core/init.c
index 774e9a2be..8b2e92669 100755
--- a/components/lwip/core/init.c
+++ b/components/lwip/core/init.c
@@ -135,7 +135,7 @@
 //#endif
 #else /* LWIP_WND_SCALE */
 
-#if (ESP_PER_SOC_TCP_WND == 0)
+#if ! ESP_PER_SOC_TCP_WND
 #if (LWIP_TCP && (TCP_WND > 0xffff))
   #error "If you want to use TCP, TCP_WND must fit in an u16_t, so, you have to reduce it in your lwipopts.h (or enable window scaling)"
 #endif
@@ -143,11 +143,11 @@
 
 #endif /* LWIP_WND_SCALE */
 
-#if (ESP_PER_SOC_TCP_WND == 0)
-#if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff))
+#if ! ESP_PER_SOC_TCP_WND
+#if (LWIP_TCP && (TCP_SND_QUEUELEN(0) > 0xffff))
   #error "If you want to use TCP, TCP_SND_QUEUELEN must fit in an u16_t, so, you have to reduce it in your lwipopts.h"
 #endif
-#if (LWIP_TCP && (TCP_SND_QUEUELEN < 2))
+#if (LWIP_TCP && (TCP_SND_QUEUELEN(0) < 2))
   #error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work"
 #endif
 
@@ -286,25 +286,25 @@
 
 /* TCP sanity checks */
 #if !LWIP_DISABLE_TCP_SANITY_CHECKS
+#if ! ESP_PER_SOC_TCP_WND
 #if LWIP_TCP
-#if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN)
+#if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN(0))
   #error "lwip_sanity_check: WARNING: MEMP_NUM_TCP_SEG should be at least as big as TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
 #endif
 
-#if (ESP_PER_SOC_TCP_WND == 0)
-#if TCP_SND_BUF < (2 * TCP_MSS)
+#if TCP_SND_BUF(0) < (2 * TCP_MSS)
   #error "lwip_sanity_check: WARNING: TCP_SND_BUF must be at least as much as (2 * TCP_MSS) for things to work smoothly. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
 #endif
-#if TCP_SND_QUEUELEN < (2 * (TCP_SND_BUF / TCP_MSS))
-  #error "lwip_sanity_check: WARNING: TCP_SND_QUEUELEN must be at least as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
+#if TCP_SND_QUEUELEN(0) < (2 * (TCP_SND_BUF(0) / TCP_MSS))
+  #error "lwip_sanity_check: WARNING: TCP_SND_QUEUELEN must be at least as much as (2 * TCP_SND_BUF(0)/TCP_MSS) for things to work. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
 #endif
-#if TCP_SNDLOWAT >= TCP_SND_BUF
+#if TCP_SNDLOWAT >= TCP_SND_BUF(0)
   #error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must be less than TCP_SND_BUF. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
 #endif
 #if TCP_SNDLOWAT >= (0xFFFF - (4 * TCP_MSS))
   #error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must at least be 4*MSS below u16_t overflow!"
 #endif
-#if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN
+#if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN(0)
   #error "lwip_sanity_check: WARNING: TCP_SNDQUEUELOWAT must be less than TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error."
 #endif
 #endif
diff --git a/components/lwip/core/tcp.c b/components/lwip/core/tcp.c
index 87ddf5f1a..627df6d29 100755
--- a/components/lwip/core/tcp.c
+++ b/components/lwip/core/tcp.c
@@ -1532,6 +1532,12 @@ tcp_alloc(u8_t prio)
   }
   if (pcb != NULL) {
     memset(pcb, 0, sizeof(struct tcp_pcb));
+
+#if ESP_PER_SOC_TCP_WND
+    pcb->per_soc_tcp_wnd = TCP_WND_DEFAULT;
+    pcb->per_soc_tcp_snd_buf = TCP_SND_BUF_DEFAULT;
+#endif
+
     pcb->prio = prio;
     pcb->snd_buf = TCP_SND_BUF_DEFAULT;
     pcb->snd_queuelen = 0;
@@ -1575,11 +1581,6 @@ tcp_alloc(u8_t prio)
 #endif /* LWIP_TCP_KEEPALIVE */
 
     pcb->keep_cnt_sent = 0;
-
-#if ESP_PER_SOC_TCP_WND
-    pcb->per_soc_tcp_wnd = TCP_WND_DEFAULT;
-    pcb->per_soc_tcp_snd_buf = TCP_SND_BUF_DEFAULT;
-#endif
   }
 
   return pcb;
diff --git a/components/lwip/core/tcp_out.c b/components/lwip/core/tcp_out.c
index f189623f5..35a8aa145 100755
--- a/components/lwip/core/tcp_out.c
+++ b/components/lwip/core/tcp_out.c
@@ -1320,9 +1320,9 @@ tcp_rst(u32_t seqno, u32_t ackno,
 #endif
 #else
 #if LWIP_WND_SCALE
-  tcphdr->wnd = PP_HTONS(((TCP_WND >> TCP_RCV_SCALE) & 0xFFFF));
+  tcphdr->wnd = PP_HTONS(((TCP_WND_DEFAULT >> TCP_RCV_SCALE) & 0xFFFF));
 #else
-  tcphdr->wnd = PP_HTONS(TCP_WND);
+  tcphdr->wnd = PP_HTONS(TCP_WND_DEFAULT);
 #endif
 #endif
   tcphdr->chksum = 0;
diff --git a/components/lwip/include/lwip/port/lwipopts.h b/components/lwip/include/lwip/port/lwipopts.h
index 35c2800ed..67a62b822 100755
--- a/components/lwip/include/lwip/port/lwipopts.h
+++ b/components/lwip/include/lwip/port/lwipopts.h
@@ -240,26 +240,6 @@ extern unsigned long os_random(void);
    ---------- TCP options ----------
    ---------------------------------
 */
-/**
- * TCP_WND: The size of a TCP window.  This must be at least
- * (2 * TCP_MSS) for things to work well
- */
-
-#define ESP_PER_SOC_TCP_WND             1
-#if ESP_PER_SOC_TCP_WND
-#define TCP_WND_DEFAULT                      (4*TCP_MSS)
-#define TCP_SND_BUF_DEFAULT                  (2*TCP_MSS)
-
-#define TCP_WND(pcb)                         (pcb->per_soc_tcp_wnd)
-#define TCP_SND_BUF(pcb)                     (pcb->per_soc_tcp_snd_buf)
-#else
-#ifdef PERF
-extern unsigned char misc_prof_get_tcpw(void);
-extern unsigned char misc_prof_get_tcp_snd_buf(void);
-#define TCP_WND(pcb)                         (misc_prof_get_tcpw()*TCP_MSS)
-#define TCP_SND_BUF(pcb)                     (misc_prof_get_tcp_snd_buf()*TCP_MSS)
-#endif
-#endif
 
 
 /**
@@ -544,9 +524,10 @@ extern unsigned char misc_prof_get_tcp_snd_buf(void);
 #define ESP_LIGHT_SLEEP                 1
 
 
-#if ESP_PER_SOC_TCP_WND
 #define TCP_WND_DEFAULT                      (4*TCP_MSS)
 #define TCP_SND_BUF_DEFAULT                  (2*TCP_MSS)
+
+#if ESP_PER_SOC_TCP_WND
 #define TCP_WND(pcb)                         (pcb->per_soc_tcp_wnd)
 #define TCP_SND_BUF(pcb)                     (pcb->per_soc_tcp_snd_buf)
 #else