From a04a281ad4eaf2e4a3a8a53504d836bbeed8fada Mon Sep 17 00:00:00 2001
From: yinbin <yinbin8@huawei.com>
Date: Wed, 18 Sep 2024 14:35:11 +0800
Subject: [PATCH] LOG: modified gazelle log level and add item in mib2

---
 src/api/sockets.c        |  2 +-
 src/core/tcp.c           | 12 ++++++++----
 src/core/tcp_in.c        | 12 ++++--------
 src/include/lwip/stats.h |  8 ++++++++
 4 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/src/api/sockets.c b/src/api/sockets.c
index 3e64f66..3fc2192 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -2695,7 +2695,7 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
       break;
     case NETCONN_EVT_ERROR:
       if ((conn->pending_err != ERR_OK) && (conn->pending_err != ERR_RST)) {
-          LWIP_DEBUGF(GAZELLE_DEBUG_SERIOUS, ("event_callback: have errevent, err=%d, fd=%d\n", conn->pending_err, conn->callback_arg.socket));
+          LWIP_DEBUGF(GAZELLE_DEBUG_WARNING, ("event_callback: have errevent, err=%d, fd=%d\n", conn->pending_err, conn->callback_arg.socket));
       }
       sock->errevent = 1;
 #if GAZELLE_ENABLE
diff --git a/src/core/tcp.c b/src/core/tcp.c
index a35f19a..d499a51 100644
--- a/src/core/tcp.c
+++ b/src/core/tcp.c
@@ -1399,10 +1399,12 @@ tcp_slowtmr_start:
 
     if (pcb->state == SYN_SENT && pcb->nrtx >= TCP_SYNMAXRTX) {
       ++pcb_remove;
-      LWIP_DEBUGF(TCP_DEBUG | GAZELLE_DEBUG_SERIOUS, ("tcp_slowtmr: max SYN retries reached local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: max SYN retries reached local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      MIB2_STATS_INC(mib2.tcpfreepcbinsynmaxrtx);
     } else if (pcb->nrtx >= TCP_MAXRTX) {
       ++pcb_remove;
-      LWIP_DEBUGF(TCP_DEBUG | GAZELLE_DEBUG_SERIOUS, ("tcp_slowtmr: max DATA retries reached local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: max DATA retries reached local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      MIB2_STATS_INC(mib2.tcpfreepcbinmaxrtx);
     } else {
       if (pcb->persist_backoff > 0) {
         LWIP_ASSERT("tcp_slowtimr: persist ticking with in-flight data", pcb->unacked == NULL);
@@ -1504,7 +1506,7 @@ tcp_slowtmr_start:
          (pcb->state == CLOSE_WAIT))) {
       if ((u32_t)(tcp_ticks - pcb->tmr) >
           (pcb->keep_idle + TCP_KEEP_DUR(pcb)) / TCP_SLOW_INTERVAL) {
-        LWIP_DEBUGF(TCP_DEBUG | GAZELLE_DEBUG_SERIOUS, ("tcp_slowtmr: KEEPALIVE timeout. Aborting connection to local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+        LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: KEEPALIVE timeout. Aborting connection to local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
         ip_addr_debug_print_val(TCP_DEBUG, pcb->remote_ip);
         LWIP_DEBUGF(TCP_DEBUG, ("\n"));
 
@@ -1526,7 +1528,8 @@ tcp_slowtmr_start:
 #if TCP_QUEUE_OOSEQ
     if (pcb->ooseq != NULL &&
         (tcp_ticks - pcb->tmr >= (u32_t)pcb->rto * TCP_OOSEQ_TIMEOUT)) {
-      LWIP_DEBUGF(TCP_DEBUG | GAZELLE_DEBUG_SERIOUS, ("tcp_slowtmr: dropping OOSEQ queued data local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: dropping OOSEQ queued data local_port=%u, remote_port=%u\n", pcb->local_port, pcb->remote_port));
+      MIB2_STATS_INC(mib2.tcpooseqdatadrop);
       tcp_free_ooseq(pcb);
     }
 #endif /* TCP_QUEUE_OOSEQ */
@@ -1588,6 +1591,7 @@ tcp_slowtmr_start:
                     pcb->local_port, pcb->remote_port));
         tcp_rst(pcb, pcb->snd_nxt, pcb->rcv_nxt, &pcb->local_ip, &pcb->remote_ip,
                 pcb->local_port, pcb->remote_port);
+        MIB2_STATS_INC(mib2.tcprstinkeepalivetimeout);
       }
 
       err_arg = pcb->callback_arg;
diff --git a/src/core/tcp_in.c b/src/core/tcp_in.c
index 05c97d0..68b5e6e 100644
--- a/src/core/tcp_in.c
+++ b/src/core/tcp_in.c
@@ -594,7 +594,6 @@ tcp_input(struct pbuf *p, struct netif *inp)
               pbuf_free(rest);
             }
 #endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */
-            LWIP_DEBUGF(GAZELLE_DEBUG_SERIOUS, ("tcp_input: received data although already closed, send RST\n"));
             tcp_abort(pcb);
             goto aborted;
           }
@@ -771,7 +770,8 @@ tcp_listen_input(struct tcp_pcb_listen *pcb)
        SYN at a time when we have more memory available. */
     if (npcb == NULL) {
       err_t err;
-      LWIP_DEBUGF(TCP_DEBUG | GAZELLE_DEBUG_SERIOUS, ("tcp_listen_input: could not allocate PCB\n"));
+      LWIP_DEBUGF(TCP_DEBUG, ("tcp_listen_input: could not allocate PCB\n"));
+      MIB2_STATS_INC(mib2.tcpallocpcbfails);
       TCP_STATS_INC(tcp.memerr);
       TCP_EVENT_ACCEPT(pcb, NULL, pcb->callback_arg, ERR_MEM, err);
       LWIP_UNUSED_ARG(err); /* err not useful here */
@@ -879,11 +879,9 @@ tcp_timewait_input(struct tcp_pcb *pcb)
        should be sent in reply */
     if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt, pcb->rcv_nxt + pcb->rcv_wnd)) {
       /* If the SYN is in the window it is an error, send a reset */
-      LWIP_DEBUGF(GAZELLE_DEBUG_SERIOUS,
-                  ("tcp_timewait_input: SYN in TIME_WAIT, send RST, local_port=%d, remote_port=%d\n",
-                  tcphdr->dest, tcphdr->src));
       tcp_rst(pcb, ackno, seqno + tcplen, ip_current_dest_addr(),
               ip_current_src_addr(), tcphdr->dest, tcphdr->src);
+      MIB2_STATS_INC(mib2.tcprstwrongsynintimewait);
       return;
     }
   } else if (flags & TCP_FIN) {
@@ -1117,11 +1115,9 @@ tcp_process(struct tcp_pcb *pcb)
           }
         } else {
           /* incorrect ACK number, send RST */
-          LWIP_DEBUGF(GAZELLE_DEBUG_SERIOUS, 
-                      ("tcp_process: incorrect ACK number in SYN_RCVD, send RST, ackno=%d, lastack=%d, snd_nxt=%d, local_port=%d, remote_port=%d\n",
-                      ackno, pcb->lastack, pcb->snd_nxt, tcphdr->dest, tcphdr->src));
           tcp_rst(pcb, ackno, seqno + tcplen, ip_current_dest_addr(),
                   ip_current_src_addr(), tcphdr->dest, tcphdr->src);
+          MIB2_STATS_INC(mib2.tcprstwrongackinsynrcvd);
         }
       }
       break;
diff --git a/src/include/lwip/stats.h b/src/include/lwip/stats.h
index 6b3f18e..a83a442 100644
--- a/src/include/lwip/stats.h
+++ b/src/include/lwip/stats.h
@@ -166,6 +166,14 @@ struct stats_mib2 {
   u32_t tcpacceptmboxfull;
   u32_t tcplistendrops;
   u32_t tcpinemptyacks;
+  /* GAZELLE TCP */
+  u32_t tcprstinkeepalivetimeout;
+  u32_t tcprstwrongsynintimewait;
+  u32_t tcprstwrongackinsynrcvd;
+  u32_t tcpooseqdatadrop;
+  u32_t tcpfreepcbinsynmaxrtx;
+  u32_t tcpfreepcbinmaxrtx;
+  u32_t tcpallocpcbfails;
 
   /* UDP */
   u32_t udpindatagrams;
-- 
2.34.1