Integrate TLDK with NGINX

Created a clone of nginx (from https://github.com/nginx/nginx)
to demonstrate and benchmark TLDK library integrated with real
world application.
A new nginx module is created and and BSD socket-like API is implemented
on top of native TLDK API.
Note, that right now only minimalistic subset of socket-like API is provided:
- accept
- close
- readv
- recv
- writev
so only limited nginx functionality is available for a moment.

Change-Id: Ie1efe9349a0538da4348a48fb8306cbf636b5a92
Signed-off-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
Signed-off-by: Remy Horton <remy.horton@intel.com>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/app/nginx/src/core/ngx_crc.h b/app/nginx/src/core/ngx_crc.h
new file mode 100644
index 0000000..35981bc
--- /dev/null
+++ b/app/nginx/src/core/ngx_crc.h
@@ -0,0 +1,39 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_CRC_H_INCLUDED_
+#define _NGX_CRC_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+/* 32-bit crc16 */
+
+static ngx_inline uint32_t
+ngx_crc(u_char *data, size_t len)
+{
+    uint32_t  sum;
+
+    for (sum = 0; len; len--) {
+
+        /*
+         * gcc 2.95.2 x86 and icc 7.1.006 compile
+         * that operator into the single "rol" opcode,
+         * msvc 6.0sp2 compiles it into four opcodes.
+         */
+        sum = sum >> 1 | sum << 31;
+
+        sum += *data++;
+    }
+
+    return sum;
+}
+
+
+#endif /* _NGX_CRC_H_INCLUDED_ */