From aa97dd1ce910b839fed46ad55d1e70e403f5a930 Mon Sep 17 00:00:00 2001 From: Konstantin Ananyev Date: Tue, 21 Feb 2017 18:12:20 +0000 Subject: 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 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 Signed-off-by: Karol Latecki Signed-off-by: Daniel Mrzyglod Signed-off-by: Konstantin Ananyev --- lib/libtle_l4p/tcp_ctl.h | 120 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 lib/libtle_l4p/tcp_ctl.h (limited to 'lib/libtle_l4p/tcp_ctl.h') diff --git a/lib/libtle_l4p/tcp_ctl.h b/lib/libtle_l4p/tcp_ctl.h new file mode 100644 index 0000000..dcb9c3e --- /dev/null +++ b/lib/libtle_l4p/tcp_ctl.h @@ -0,0 +1,120 @@ +/* + * 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. + */ + +/* + * Some helper stream control functions definitions. + */ + +#ifndef _TCP_CTL_H_ +#define _TCP_CTL_H_ + +#include "tcp_stream.h" +#include "tcp_ofo.h" + +#ifdef __cplusplus +extern "C" { +#endif + +static inline void +tcp_stream_down(struct tle_tcp_stream *s) +{ + rwl_down(&s->rx.use); + rwl_down(&s->tx.use); +} + +static inline void +tcp_stream_up(struct tle_tcp_stream *s) +{ + rwl_up(&s->rx.use); + rwl_up(&s->tx.use); +} + +/* empty stream's receive queue */ +static void +empty_rq(struct tle_tcp_stream *s) +{ + empty_mbuf_ring(s->rx.q); + tcp_ofo_reset(s->rx.ofo); +} + +/* empty stream's listen queue */ +static void +empty_lq(struct tle_tcp_stream *s, struct stbl *st) +{ + uint32_t i, n; + struct rte_mbuf *mb; + union pkt_info pi; + union seg_info si; + struct stbl_entry *se[MAX_PKT_BURST]; + + do { + n = rte_ring_dequeue_burst(s->rx.q, (void **)se, RTE_DIM(se)); + for (i = 0; i != n; i++) { + mb = stbl_get_pkt(se[i]); + get_pkt_info(mb, &pi, &si); + stbl_del_pkt_lock(st, se[i], &pi); + rte_pktmbuf_free(mb); + } + } while (n != 0); +} + +static inline void +tcp_stream_reset(struct tle_ctx *ctx, struct tle_tcp_stream *s) +{ + struct stbl *st; + uint16_t uop; + + st = CTX_TCP_STLB(ctx); + + /* reset TX armed */ + rte_atomic32_set(&s->tx.arm, 0); + + /* reset TCB */ + uop = s->tcb.uop & (TCP_OP_LISTEN | TCP_OP_CONNECT); + memset(&s->tcb, 0, sizeof(s->tcb)); + + /* reset cached destination */ + memset(&s->tx.dst, 0, sizeof(s->tx.dst)); + + if (uop != 0) { + /* free stream's destination port */ + stream_clear_ctx(ctx, &s->s); + if (uop == TCP_OP_LISTEN) + empty_lq(s, st); + } + + if (s->ste != NULL) { + /* remove entry from RX streams table */ + stbl_del_stream_lock(st, s->ste, s); + s->ste = NULL; + empty_rq(s); + } + + /* empty TX queue */ + empty_mbuf_ring(s->tx.q); + + /* + * mark the stream as free again. + * if there still are pkts queued for TX, + * then put this stream to the tail of free list. + */ + put_stream(ctx, &s->s, TCP_STREAM_TX_FINISHED(s)); +} + +#ifdef __cplusplus +} +#endif + +#endif /* _TCP_CTL_H_ */ -- cgit 1.2.3-korg