diff options
Diffstat (limited to 'lib/libtle_l4p/tcp_txq.h')
-rw-r--r-- | lib/libtle_l4p/tcp_txq.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/lib/libtle_l4p/tcp_txq.h b/lib/libtle_l4p/tcp_txq.h new file mode 100644 index 0000000..0b199ba --- /dev/null +++ b/lib/libtle_l4p/tcp_txq.h @@ -0,0 +1,122 @@ +/* + * 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 _TCP_TXQ_H_ +#define _TCP_TXQ_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +static inline struct rte_mbuf ** +tcp_txq_get_nxt_objs(const struct tle_tcp_stream *s, uint32_t *num) +{ + uint32_t cnt, head, mask, sz, tail; + struct rte_ring *r; + + r = s->tx.q; + sz = r->prod.size; + mask = r->prod.mask; + head = r->cons.head & mask; + tail = r->prod.tail & mask; + + cnt = (tail >= head) ? tail - head : sz - head; + + *num = cnt; + return (struct rte_mbuf **)(r->ring + head); +} + +static inline struct rte_mbuf ** +tcp_txq_get_una_objs(const struct tle_tcp_stream *s, uint32_t *num) +{ + uint32_t cnt, head, mask, sz, tail; + struct rte_ring *r; + + r = s->tx.q; + sz = r->prod.size; + mask = r->prod.mask; + head = r->prod.tail & mask; + tail = r->cons.tail & mask; + + cnt = (head >= tail) ? head - tail : sz - tail; + + *num = cnt; + return (struct rte_mbuf **)(r->ring + tail); +} + +static inline void +tcp_txq_set_nxt_head(struct tle_tcp_stream *s, uint32_t num) +{ + struct rte_ring *r; + + r = s->tx.q; + r->cons.head += num; +} + +static inline void +tcp_txq_rst_nxt_head(struct tle_tcp_stream *s) +{ + struct rte_ring *r; + + r = s->tx.q; + r->cons.head = r->cons.tail; +} + +static inline void +tcp_txq_set_una_tail(struct tle_tcp_stream *s, uint32_t num) +{ + struct rte_ring *r; + + r = s->tx.q; + rte_smp_rmb(); + r->cons.tail += num; +} + +static inline uint32_t +tcp_txq_nxt_cnt(struct tle_tcp_stream *s) +{ + struct rte_ring *r; + + r = s->tx.q; + return (r->prod.tail - r->cons.head) & r->prod.mask; +} + +static inline void +txs_enqueue(struct tle_ctx *ctx, struct tle_tcp_stream *s) +{ + struct rte_ring *r; + uint32_t n; + + if (rte_atomic32_add_return(&s->tx.arm, 1) == 1) { + r = CTX_TCP_TSQ(ctx); + n = rte_ring_enqueue_burst(r, (void * const *)&s, 1); + RTE_VERIFY(n == 1); + } +} + +static inline uint32_t +txs_dequeue_bulk(struct tle_ctx *ctx, struct tle_tcp_stream *s[], uint32_t num) +{ + struct rte_ring *r; + + r = CTX_TCP_TSQ(ctx); + return rte_ring_dequeue_burst(r, (void **)s, num); +} + +#ifdef __cplusplus +} +#endif + +#endif /* _TCP_TXQ_H_ */ |