stream: remove unused zero copy setting

src/stream-tcp-reassemble.c

@@ -503,18 +503,6 @@ int StreamTcpReassemblyConfig(char quiet)
         SCLogConfig("stream.reassembly \"chunk-prealloc\": %u", stream_chunk_prealloc);
     StreamMsgQueuesInit(stream_chunk_prealloc);
 
-    intmax_t zero_copy_size = 128;
-    if (ConfGetInt("stream.reassembly.zero-copy-size", &zero_copy_size) == 1) {
-        if (zero_copy_size < 0 || zero_copy_size > 0xffff) {
-            SCLogError(SC_ERR_INVALID_ARGUMENT, "stream.reassembly.zero-copy-size of "
-                    "%"PRIiMAX" is invalid: valid values are 0 to 65535", zero_copy_size);
-            return -1;
-        }
-    }
-    stream_config.zero_copy_size = (uint16_t)zero_copy_size;
-    if (!quiet)
-        SCLogConfig("stream.reassembly \"zero-copy-size\": %u", stream_config.zero_copy_size);
-
     stream_config.sbcnf.flags = STREAMING_BUFFER_NOFLAGS;
     stream_config.sbcnf.buf_size = 2048;
 
@@ -599,10 +587,6 @@ void StreamTcpReassembleFreeThreadCtx(TcpReassemblyThreadCtx *ra_ctx)
 {
     SCEnter();
     AppLayerDestroyCtxThread(ra_ctx->app_tctx);
-#ifdef DEBUG
-    SCLogDebug("reassembly fast path stats: fp1 %"PRIu64" fp2 %"PRIu64" sp %"PRIu64,
-            ra_ctx->fp1, ra_ctx->fp2, ra_ctx->sp);
-#endif
     SCFree(ra_ctx);
     SCReturn;
 }

src/stream-tcp-reassemble.h

@@ -59,11 +59,6 @@ typedef struct TcpReassemblyThreadCtx_ {
     uint16_t counter_tcp_stream_depth;
     /** count number of streams with a unrecoverable stream gap (missing pkts) */
     uint16_t counter_tcp_reass_gap;
-#ifdef DEBUG
-    uint64_t fp1;
-    uint64_t fp2;
-    uint64_t sp;
-#endif
 } TcpReassemblyThreadCtx;
 
 #define OS_POLICY_DEFAULT   OS_POLICY_BSD

src/stream-tcp.h

@@ -51,9 +51,6 @@ typedef struct TcpStreamCnf_ {
     uint32_t ssn_init_flags; /**< new ssn flags will be initialized to this */
     uint8_t segment_init_flags; /**< new seg flags will be initialized to this */
 
-    uint16_t zero_copy_size;    /**< use zero copy for app layer above segments
-                                 *   of this size */
-
     uint32_t prealloc_sessions; /**< ssns to prealloc per stream thread */
     int midstream;
     int async_oneside;
@@ -62,7 +59,6 @@ typedef struct TcpStreamCnf_ {
     uint16_t reassembly_toserver_chunk_size;
     uint16_t reassembly_toclient_chunk_size;
 
-    int check_overlap_different_data;
     int bypass;
 
     uint8_t flags;

suricata.yaml.in

@@ -1208,11 +1208,6 @@ flow-timeouts:
 #       - size: 4               # Size of the (data)segment for a pool
 #         prealloc: 256         # Number of segments to prealloc and keep
 #                               # in the pool.
-#     zero-copy-size: 128       # This option sets in bytes the value at
-#                               # which segment data is passed to the app
-#                               # layer API directly. Data sizes equal to
-#                               # and higher than the value set are passed
-#                               # on directly.
 #
 stream:
   memcap: 64mb
@@ -1246,7 +1241,6 @@ stream:
     #    prealloc: 1024
     #  - size: 65535
     #    prealloc: 128
-    #zero-copy-size: 128
 
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