diff --git a/0036-add-tso.patch b/0036-add-tso.patch
deleted file mode 100644
index f8837a6beeca684eaaacc37af6f07b259d58dc25..0000000000000000000000000000000000000000
--- a/0036-add-tso.patch
+++ /dev/null
@@ -1,380 +0,0 @@
-From d5ad901ff2f12c69bb4c9ef97f20f6fb9413c068 Mon Sep 17 00:00:00 2001
-From: wu-changsheng <wuchangsheng2@huawei.com>
-Date: Sat, 3 Dec 2022 21:53:49 +0800
-Subject: [PATCH] add tso
-
----
- src/core/ipv4/etharp.c   |  17 +++-
- src/core/ipv4/ip4.c      |  10 ++-
- src/core/tcp.c           |   6 ++
- src/core/tcp_out.c       | 178 +++++++++++++++++++++++++++++++++++++--
- src/include/dpdk_cksum.h |   2 +-
- src/include/lwip/pbuf.h  |   8 +-
- src/include/lwipopts.h   |   4 +
- 7 files changed, 211 insertions(+), 14 deletions(-)
-
-diff --git a/src/core/ipv4/etharp.c b/src/core/ipv4/etharp.c
-index effb7db..f1903e4 100644
---- a/src/core/ipv4/etharp.c
-+++ b/src/core/ipv4/etharp.c
-@@ -482,6 +482,13 @@ etharp_update_arp_entry(struct netif *netif, const ip4_addr_t *ipaddr, struct et
-     struct pbuf *p = arp_table[i].q;
-     arp_table[i].q = NULL;
- #endif /* ARP_QUEUEING */
-+#if USE_LIBOS
-+    struct pbuf *tmp = p->next;
-+    while (tmp != NULL) {
-+       tmp->ref--;
-+       tmp = tmp->next;
-+    }
-+#endif
-     /* send the queued IP packet */
-     ethernet_output(netif, p, (struct eth_addr *)(netif->hwaddr), ethaddr, ETHTYPE_IP);
-     /* free the queued IP packet */
-@@ -1027,7 +1034,15 @@ etharp_query(struct netif *netif, const ip4_addr_t *ipaddr, struct pbuf *q)
-     } else {
-       /* referencing the old pbuf is enough */
-       p = q;
--      pbuf_ref(p);
-+#if USE_LIBOS
-+      struct pbuf *tmp = p;
-+      while (tmp != NULL) {
-+        pbuf_ref(tmp);
-+        tmp = tmp->next;
-+      }
-+#else
-+       pbuf_ref(p);
-+#endif
-     }
-     /* packet could be taken over? */
-     if (p != NULL) {
-diff --git a/src/core/ipv4/ip4.c b/src/core/ipv4/ip4.c
-index 1334cdc..d823491 100644
---- a/src/core/ipv4/ip4.c
-+++ b/src/core/ipv4/ip4.c
-@@ -1034,9 +1034,15 @@ ip4_output_if_opt_src(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *d
- #endif /* ENABLE_LOOPBACK */
- #if IP_FRAG
-   /* don't fragment if interface has mtu set to 0 [loopif] */
--  if (netif->mtu && (p->tot_len > netif->mtu)) {
--    return ip4_frag(p, netif, dest);
-+#if USE_LIBOS
-+  if (!(get_eth_params_tx_ol() & DEV_TX_OFFLOAD_TCP_TSO)) {
-+#endif
-+    if (netif->mtu && (p->tot_len > netif->mtu)) {
-+      return ip4_frag(p, netif, dest);
-+    }
-+#if USE_LIBOS
-   }
-+#endif
- #endif /* IP_FRAG */
- 
-   LWIP_DEBUGF(IP_DEBUG, ("ip4_output_if: call netif->output()\n"));
-diff --git a/src/core/tcp.c b/src/core/tcp.c
-index 4fece5d..fe54610 100644
---- a/src/core/tcp.c
-+++ b/src/core/tcp.c
-@@ -1755,7 +1755,9 @@ tcp_seg_free(struct tcp_seg *seg)
-       seg->p = NULL;
- #endif /* TCP_DEBUG */
-     }
-+#if !USE_LIBOS
-     memp_free(MEMP_TCP_SEG, seg);
-+#endif
-   }
- }
- 
-@@ -1791,10 +1793,14 @@ tcp_seg_copy(struct tcp_seg *seg)
- 
-   LWIP_ASSERT("tcp_seg_copy: invalid seg", seg != NULL);
- 
-+#if USE_LIBOS
-+  cseg = (struct tcp_seg *)((uint8_t *)seg->p + sizeof(struct pbuf_custom));
-+#else
-   cseg = (struct tcp_seg *)memp_malloc(MEMP_TCP_SEG);
-   if (cseg == NULL) {
-     return NULL;
-   }
-+#endif
-   SMEMCPY((u8_t *)cseg, (const u8_t *)seg, sizeof(struct tcp_seg));
-   pbuf_ref(cseg->p);
-   return cseg;
-diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
-index 7ebcfea..c4584ea 100644
---- a/src/core/tcp_out.c
-+++ b/src/core/tcp_out.c
-@@ -161,6 +161,40 @@ tcp_route(const struct tcp_pcb *pcb, const ip_addr_t *src, const ip_addr_t *dst)
-  * The TCP header is filled in except ackno and wnd.
-  * p is freed on failure.
-  */
-+#if USE_LIBOS
-+void tcp_init_segment(struct tcp_seg *seg, const struct tcp_pcb *pcb, struct pbuf *p, u8_t hdrflags,
-+  u32_t seqno, u8_t optflags)
-+{
-+  u8_t optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(optflags, pcb);
-+
-+  seg->flags = optflags;
-+  seg->next = NULL;
-+  seg->p = p;
-+  seg->len = p->tot_len - optlen;
-+
-+  /* build TCP header */
-+  pbuf_add_header(p, TCP_HLEN);
-+  seg->tcphdr = (struct tcp_hdr *)seg->p->payload;
-+  seg->tcphdr->src = lwip_htons(pcb->local_port);
-+  seg->tcphdr->dest = lwip_htons(pcb->remote_port);
-+  seg->tcphdr->seqno = lwip_htonl(seqno);
-+
-+  TCPH_HDRLEN_FLAGS_SET(seg->tcphdr, (TCP_HLEN + optlen) / 4, hdrflags);
-+  seg->tcphdr->urgp = 0;
-+}
-+
-+static struct tcp_seg *
-+tcp_create_segment(const struct tcp_pcb *pcb, struct pbuf *p, u8_t hdrflags, u32_t seqno, u8_t optflags)
-+{
-+  struct tcp_seg *seg;
-+
-+  seg = (struct tcp_seg *)((uint8_t *)p + sizeof(struct pbuf_custom));
-+
-+  tcp_init_segment(seg, pcb, p, hdrflags, seqno, optflags);  
-+
-+  return seg;
-+}
-+#else
- static struct tcp_seg *
- tcp_create_segment(const struct tcp_pcb *pcb, struct pbuf *p, u8_t hdrflags, u32_t seqno, u8_t optflags)
- {
-@@ -210,6 +244,7 @@ tcp_create_segment(const struct tcp_pcb *pcb, struct pbuf *p, u8_t hdrflags, u32
-   seg->tcphdr->urgp = 0;
-   return seg;
- }
-+#endif
- 
- /**
-  * Allocate a PBUF_RAM pbuf, perhaps with extra space at the end.
-@@ -1272,6 +1307,60 @@ tcp_build_wnd_scale_option(u32_t *opts)
- }
- #endif
- 
-+#if USE_LIBOS
-+static struct tcp_seg *tcp_output_over(struct tcp_pcb *pcb, struct tcp_seg *seg, struct tcp_seg *useg)
-+{
-+  if (TCP_TCPLEN(seg) > 0) {
-+    seg->next = NULL;
-+    if (useg == NULL) {
-+      pcb->unacked = seg;
-+      useg = seg;
-+    } else {
-+      if (TCP_SEQ_LT(lwip_ntohl(seg->tcphdr->seqno), lwip_ntohl(useg->tcphdr->seqno))) {
-+        /* add segment to before tail of unacked list, keeping the list sorted */
-+        struct tcp_seg **cur_seg = &(pcb->unacked);
-+        while (*cur_seg &&
-+              TCP_SEQ_LT(lwip_ntohl((*cur_seg)->tcphdr->seqno), lwip_ntohl(seg->tcphdr->seqno))) {
-+          cur_seg = &((*cur_seg)->next );
-+        }
-+        seg->next = (*cur_seg);
-+        (*cur_seg) = seg;
-+      } else {
-+        /* add segment to tail of unacked list */
-+        useg->next = seg;
-+        useg = seg;
-+      }
-+    }
-+  } else {
-+    tcp_seg_free(seg);
-+  }
-+
-+  return useg;
-+}
-+static err_t tcp_output_seg(struct tcp_pcb *pcb, struct tcp_seg *seg, struct netif *netif, u32_t snd_nxt)
-+{
-+  if (pcb->state != SYN_SENT) {
-+    TCPH_SET_FLAG(seg->tcphdr, TCP_ACK);
-+  }
-+
-+  err_t err = tcp_output_segment(seg, pcb, netif);
-+  if (err != ERR_OK) {
-+    /* segment could not be sent, for whatever reason */
-+    tcp_set_flags(pcb, TF_NAGLEMEMERR);
-+    return err;
-+  }
-+
-+  if (pcb->state != SYN_SENT) {
-+    tcp_clear_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW);
-+  }
-+
-+  if (TCP_SEQ_LT(pcb->snd_nxt, snd_nxt)) {
-+      pcb->snd_nxt = snd_nxt;
-+  }
-+
-+  return ERR_OK;
-+}
-+#endif
- /**
-  * @ingroup tcp_raw
-  * Find out what we can send and send it
-@@ -1376,16 +1465,88 @@ tcp_output(struct tcp_pcb *pcb)
-     for (; useg->next != NULL; useg = useg->next);
-   }
-   /* data available and window allows it to be sent? */
-+
- #if USE_LIBOS
--  /* avoid send cose too much time, limit send pkts num max 10 */
--  uint16_t send_pkt = 0;
--  while (seg != NULL && send_pkt < 10 &&
--         lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) {
--    send_pkt++;
--#else
-+  if (get_eth_params_tx_ol() & DEV_TX_OFFLOAD_TCP_TSO) {
-+    while(seg) {
-+      /**
-+       * 1）遍历unsent队列，找到所有的待发送seg. 将seg的buf串起来
-+       * 2) 生成新的seg, 调用tcp_output_segment, 新的seg释放掉
-+       * 3) 若成功，则更新snd_nxt, unacked队列，和unsent队列。 
-+       */
-+      struct tcp_seg *start_seg = seg;
-+      struct pbuf *first_pbuf = NULL;
-+      struct pbuf *pre_pbuf = NULL;
-+      u8_t pbuf_chain_len = 0;
-+      u32_t next_seqno = lwip_ntohl(seg->tcphdr->seqno);
-+      while (seg != NULL && pbuf_chain_len < MAX_PBUF_CHAIN_LEN) {
-+        u32_t seg_seqno = lwip_ntohl(seg->tcphdr->seqno);
-+        if (seg_seqno - pcb->lastack + seg->len > wnd) {
-+          if (first_pbuf)
-+            break;
-+          else
-+            goto output_done;
-+        }
-+
-+        if ((tcp_do_output_nagle(pcb) == 0) && ((pcb->flags & (TF_NAGLEMEMERR | TF_FIN)) == 0)) {
-+          if (first_pbuf)
-+            break;
-+          else
-+            goto output_done;
-+        }
-+
-+        if (seg->len < TCP_MSS || next_seqno != seg_seqno || pbuf_chain_len >= MAX_PBUF_CHAIN_LEN) {
-+          break;
-+        }
-+        if (first_pbuf == NULL && (seg->next == NULL || seg->next->len < TCP_MSS)) {
-+          break;
-+        }
-+
-+        pbuf_remove_header(seg->p, seg->p->tot_len - seg->len);
-+        if (first_pbuf == NULL) {
-+          first_pbuf = seg->p;
-+        } else {
-+          first_pbuf->tot_len += seg->p->len;
-+          pre_pbuf->next = seg->p;
-+        }
-+
-+        pre_pbuf = seg->p;
-+        next_seqno = seg_seqno + seg->len;
-+        seg = seg->next;
-+        pcb->unsent = seg;
-+        pbuf_chain_len++;
-+      }
-+
-+      if (first_pbuf == NULL) {
-+        err = tcp_output_seg(pcb, seg, netif, next_seqno + seg->len);
-+        if (err != ERR_OK)
-+          return err;
-+        pcb->unsent = seg->next;
-+        useg = tcp_output_over(pcb, seg, useg);
-+        seg = pcb->unsent;
-+        continue;
-+      }
-+
-+      struct tcp_seg new_seg;
-+      tcp_init_segment(&new_seg, pcb, first_pbuf, 0, lwip_ntohl(start_seg->tcphdr->seqno), 0);
-+
-+      err = tcp_output_seg(pcb, &new_seg, netif, next_seqno);
-+
-+      for (u32_t i = 0; i < pbuf_chain_len; i++) {
-+        struct tcp_seg *next_seg = start_seg->next;
-+        start_seg->p->next = NULL;
-+        useg = tcp_output_over(pcb, start_seg, useg);
-+        start_seg = next_seg;
-+      }
-+
-+      pbuf_remove_header(new_seg.p, new_seg.p->tot_len - new_seg.len - TCPH_HDRLEN_BYTES(new_seg.tcphdr));
-+      new_seg.p->tot_len = new_seg.p->len;
-+    }
-+  } else
-+#endif
-+{
-   while (seg != NULL &&
-          lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) {
--#endif
-     LWIP_ASSERT("RST not expected here!",
-                 (TCPH_FLAGS(seg->tcphdr) & TCP_RST) == 0);
-     /* Stop sending if the nagle algorithm would prevent it
-@@ -1462,6 +1623,7 @@ tcp_output(struct tcp_pcb *pcb)
-     }
-     seg = pcb->unsent;
-   }
-+}
- #if TCP_OVERSIZE
-   if (pcb->unsent == NULL) {
-     /* last unsent has been removed, reset unsent_oversize */
-@@ -1627,7 +1789,7 @@ tcp_output_segment(struct tcp_seg *seg, struct tcp_pcb *pcb, struct netif *netif
-   IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_TCP) {
- #if CHECKSUM_GEN_TCP_HW
-   if (get_eth_params_tx_ol() & DEV_TX_OFFLOAD_TCP_CKSUM) {
--    tcph_cksum_set(seg->p, TCP_HLEN);
-+    tcph_cksum_set(seg->p, TCPH_HDRLEN_BYTES(seg->tcphdr));
-     seg->tcphdr->chksum = ip_chksum_pseudo_offload(IP_PROTO_TCP,seg->p->tot_len, &pcb->local_ip, &pcb->remote_ip);
-   } else {
- #if TCP_CHECKSUM_ON_COPY
-diff --git a/src/include/dpdk_cksum.h b/src/include/dpdk_cksum.h
-index 70aab71..7163196 100644
---- a/src/include/dpdk_cksum.h
-+++ b/src/include/dpdk_cksum.h
-@@ -79,7 +79,7 @@ static inline void iph_cksum_set(struct pbuf *p, u16_t len, bool do_ipcksum) {
- #include <rte_ip.h>
- 
- static inline void tcph_cksum_set(struct pbuf *p, u16_t len) {
--    (void)len;
-+    p->l4_len = len;
-     p->ol_flags |= PKT_TX_TCP_CKSUM;
- }
- 
-diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
-index e68d0bf..d9d2e71 100644
---- a/src/include/lwip/pbuf.h
-+++ b/src/include/lwip/pbuf.h
-@@ -222,10 +222,14 @@ struct pbuf {
- #if USE_LIBOS && CHECKSUM_OFFLOAD_ALL
-   /** checksum offload ol_flags */
-   u64_t ol_flags;
--  /** checksum offload l2_len */
-+  /* < L2 (MAC) Header Length for non-tunneling pkt. */
-   u64_t l2_len:7;
--  /** checksum offload l3_len */
-+  /* < L3 (IP) Header Length. */
-   u64_t l3_len:9;
-+  /* < L4 (TCP/UDP) Header Length. */
-+  u64_t l4_len:8;
-+  u16_t header_off;
-+  u8_t rexmit;
- #endif /* USE_LIBOS CHECKSUM_OFFLOAD_SWITCH */
- };
- 
-diff --git a/src/include/lwipopts.h b/src/include/lwipopts.h
-index 7459991..c27eef5 100644
---- a/src/include/lwipopts.h
-+++ b/src/include/lwipopts.h
-@@ -169,6 +169,10 @@
- 
- #define ARP_TABLE_SIZE 512
- 
-+#define MAX_PBUF_CHAIN_LEN 40
-+
-+#define MIN_TSO_SEG_LEN 256
-+
- /*  ---------------------------------------
-  *  -------      NIC offloads      --------
-  *  ---------------------------------------
--- 
-2.23.0
-
diff --git a/0037-optimize-app-thread-write-buff-block.patch b/0037-optimize-app-thread-write-buff-block.patch
deleted file mode 100644
index 6e64b9ca36c28abaea3b76ea78f40b3672ef696d..0000000000000000000000000000000000000000
--- a/0037-optimize-app-thread-write-buff-block.patch
+++ /dev/null
@@ -1,94 +0,0 @@
-From f065e072711b0714aa49556afc88d9f1efaa405c Mon Sep 17 00:00:00 2001
-From: wu-changsheng <wuchangsheng2@huawei.com>
-Date: Sat, 3 Dec 2022 21:58:44 +0800
-Subject: [PATCH] optimize-app-thread-write-buff-block
-
----
- src/core/tcp_out.c      |  2 +-
- src/include/lwip/pbuf.h |  3 +++
- src/include/lwipsock.h  | 33 +++++++++++++++++++++++----------
- 3 files changed, 27 insertions(+), 11 deletions(-)
-
-diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
-index c4584ea..a4d511e 100644
---- a/src/core/tcp_out.c
-+++ b/src/core/tcp_out.c
-@@ -763,7 +763,7 @@ tcp_write(struct tcp_pcb *pcb, const void *arg, u16_t len, u8_t apiflags)
- 
-     pos += seglen;
- #if USE_LIBOS
--    write_lwip_over((struct lwip_sock*)arg, 1);
-+    write_lwip_over((struct lwip_sock*)arg);
- #endif
-   }
- 
-diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
-index d9d2e71..200dbf2 100644
---- a/src/include/lwip/pbuf.h
-+++ b/src/include/lwip/pbuf.h
-@@ -230,6 +230,9 @@ struct pbuf {
-   u64_t l4_len:8;
-   u16_t header_off;
-   u8_t rexmit;
-+  u8_t in_write;
-+  u8_t head;
-+  struct pbuf *last;
- #endif /* USE_LIBOS CHECKSUM_OFFLOAD_SWITCH */
- };
- 
-diff --git a/src/include/lwipsock.h b/src/include/lwipsock.h
-index 9fa4c57..4c578b3 100644
---- a/src/include/lwipsock.h
-+++ b/src/include/lwipsock.h
-@@ -94,17 +94,30 @@ struct lwip_sock {
- #endif
- 
- #if USE_LIBOS
--  struct pbuf *send_lastdata;
--  uint16_t send_datalen;
--  volatile uint32_t events __rte_cache_aligned; /* available events */
--  struct pbuf *recv_lastdata __rte_cache_aligned; /* unread data in one pbuf */
--  struct list_node recv_list __rte_cache_aligned;
--  struct list_node event_list __rte_cache_aligned;
--  struct list_node send_list __rte_cache_aligned;
--  uint32_t in_send __rte_cache_aligned; /* avoid sock too much send rpc msg*/
-+  char pad0 __rte_cache_aligned;
-+  /* app thread use */
-+  struct pbuf *recv_lastdata; /* unread data in one pbuf */
-+  uint16_t remain_len;
-   uint32_t epoll_events; /* registered events, EPOLLONESHOT write frequently */
--  char pad __rte_cache_aligned;
-+  volatile uint32_t events; /* available events */
-+  struct list_node event_list;
-+
-+  char pad1 __rte_cache_aligned;
-+  /* app and stack thread all use */
-+  uint32_t in_send; /* avoid sock too much send rpc msg*/
-+  pthread_spinlock_t sock_lock;
-+
-+  char pad2 __rte_cache_aligned;
-+  /* stack thread all use */
-+  struct list_node recv_list;
-+  struct list_node send_list;
-+  struct pbuf *send_lastdata;
-+  struct pbuf *send_pre_del;
-+  uint64_t recv_all;
-+  uint64_t send_all;
- 
-+  char pad3 __rte_cache_aligned;
-+  /* nerver change */
-   struct wakeup_poll *wakeup;
-   epoll_data_t ep_data;
-   struct lwip_sock *listen_next; /* listenfd list */
-@@ -132,7 +145,7 @@ extern ssize_t read_lwip_data(struct lwip_sock *sock, int32_t flags, u8_t apifla
- extern struct pbuf *write_lwip_data(struct lwip_sock *sock, uint16_t remain_size, uint8_t *apiflags);
- extern void gazelle_init_sock(int32_t fd);
- extern void gazelle_clean_sock(int32_t fd);
--extern void write_lwip_over(struct lwip_sock *sock, uint32_t n);
-+extern void write_lwip_over(struct lwip_sock *sock);
- #endif /* USE_LIBOS */
- 
- struct lwip_sock *get_socket(int s);
--- 
-2.23.0
-
diff --git a/lwip.spec b/lwip.spec
index 964fa98cb74863dc1c058c59742326348fa78bbf..f6bc918e19b6e6ed6cd7a586850613e0d236f42a 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -4,7 +4,7 @@
 Summary: lwip is a small independent implementation of the TCP/IP protocol suite
 Name:    lwip
 Version: 2.1.2
-Release: 15
+Release: 14
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -48,8 +48,6 @@ Patch9031:  0031-fix-free-pbuf-miss-data.patch
 Patch9032:  0032-alloc-socket-fail-clean-sock.patch
 Patch9033:  0034-add-accept4-and-epoll_create1.patch
 Patch9034:  0035-add-writev-and-readv.patch
-Patch9035:  0036-add-tso.patch
-Patch9036:  0037-optimize-app-thread-write-buff-block.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -102,8 +100,6 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9032 -p1
 %patch9033 -p1
 %patch9034 -p1
-%patch9035 -p1
-%patch9036 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src