Introduce first version of TCP code.

    Supported functionality:
    - open/close
    - listen/accept/connect
    - send/recv
    In order to achieve that libtle_udp library was
    reworked into libtle_l4p library that supports
    both TCP and UDP protocols.
    New libtle_timer library was introduced
    (thanks to Cisco guys and Dave Barach <dbarach@cisco.com>
    for sharing their timer code with us).
    Sample application was also reworked significantly
    to support both TCP and UDP traffic handling.
    New UT were introduced.

Change-Id: I806b05011f521e89b58db403cfdd484a37beb775
Signed-off-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
Signed-off-by: Karol Latecki <karolx.latecki@intel.com>
Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

1 files changed, 112 insertions, 0 deletions

diff --git a/lib/libtle_l4p/port_bitmap.h b/lib/libtle_l4p/port_bitmap.h
new file mode 100644
index 0000000..c0420d5
--- /dev/null
+++ b/lib/libtle_l4p/port_bitmap.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2016  Intel Corporation.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _PORT_BITMAP_H_
+#define _PORT_BITMAP_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Simple implementation of bitmap for all possible L4 ports [0-UINT16_MAX].
+ */
+
+#define MAX_PORT_NUM	(UINT16_MAX + 1)
+
+#define PORT_BLK(p)	((p) / (sizeof(uint32_t) * CHAR_BIT))
+#define PORT_IDX(p)	((p) % (sizeof(uint32_t) * CHAR_BIT))
+
+#define	MAX_PORT_BLK	PORT_BLK(MAX_PORT_NUM)
+
+struct tle_pbm {
+	uint32_t nb_set; /* number of bits set. */
+	uint32_t blk;    /* last block with free entry. */
+	uint32_t bm[MAX_PORT_BLK];
+};
+
+static inline void
+tle_pbm_init(struct tle_pbm *pbm, uint32_t blk)
+{
+	pbm->bm[0] = 1;
+	pbm->nb_set = 1;
+	pbm->blk = blk;
+}
+
+static inline void
+tle_pbm_set(struct tle_pbm *pbm, uint16_t port)
+{
+	uint32_t i, b, v;
+
+	i = PORT_BLK(port);
+	b = 1 << PORT_IDX(port);
+	v = pbm->bm[i];
+	pbm->bm[i] = v | b;
+	pbm->nb_set += (v & b) == 0;
+}
+
+static inline void
+tle_pbm_clear(struct tle_pbm *pbm, uint16_t port)
+{
+	uint32_t i, b, v;
+
+	i = PORT_BLK(port);
+	b = 1 << PORT_IDX(port);
+	v = pbm->bm[i];
+	pbm->bm[i] = v & ~b;
+	pbm->nb_set -= (v & b) != 0;
+}
+
+
+static inline uint32_t
+tle_pbm_check(const struct tle_pbm *pbm, uint16_t port)
+{
+	uint32_t i, v;
+
+	i = PORT_BLK(port);
+	v = pbm->bm[i] >> PORT_IDX(port);
+	return v & 1;
+}
+
+static inline uint16_t
+tle_pbm_find_range(struct tle_pbm *pbm, uint32_t start_blk, uint32_t end_blk)
+{
+	uint32_t i, v;
+	uint16_t p;
+
+	if (pbm->nb_set == MAX_PORT_NUM)
+		return 0;
+
+	p = 0;
+	for (i = start_blk; i != end_blk; i++) {
+		i %= RTE_DIM(pbm->bm);
+		v = pbm->bm[i];
+		if (v != UINT32_MAX) {
+			for (p = i * (sizeof(pbm->bm[0]) * CHAR_BIT);
+					(v & 1) != 0; v >>= 1, p++)
+				;
+
+			pbm->blk = i;
+			break;
+		}
+	}
+	return p;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PORT_BITMAP_H_ */