cxgb_mbuf.h revision 1.1.4.2
1 1.1.4.2 rmind /************************************************************************** 2 1.1.4.2 rmind 3 1.1.4.2 rmind Copyright (c) 2007, Chelsio Inc. 4 1.1.4.2 rmind All rights reserved. 5 1.1.4.2 rmind 6 1.1.4.2 rmind Redistribution and use in source and binary forms, with or without 7 1.1.4.2 rmind modification, are permitted provided that the following conditions are met: 8 1.1.4.2 rmind 9 1.1.4.2 rmind 1. Redistributions of source code must retain the above copyright notice, 10 1.1.4.2 rmind this list of conditions and the following disclaimer. 11 1.1.4.2 rmind 12 1.1.4.2 rmind 2. Neither the name of the Chelsio Corporation nor the names of its 13 1.1.4.2 rmind contributors may be used to endorse or promote products derived from 14 1.1.4.2 rmind this software without specific prior written permission. 15 1.1.4.2 rmind 16 1.1.4.2 rmind THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 1.1.4.2 rmind AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1.4.2 rmind IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1.4.2 rmind ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 1.1.4.2 rmind LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1.4.2 rmind CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1.4.2 rmind SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1.4.2 rmind INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1.4.2 rmind CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1.4.2 rmind ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1.4.2 rmind POSSIBILITY OF SUCH DAMAGE. 27 1.1.4.2 rmind 28 1.1.4.2 rmind ***************************************************************************/ 29 1.1.4.2 rmind 30 1.1.4.2 rmind #ifndef CXGB_MBUFQ_H_ 31 1.1.4.2 rmind #define CXGB_MBUFQ_H_ 32 1.1.4.2 rmind 33 1.1.4.2 rmind #include <sys/mbuf.h> 34 1.1.4.2 rmind 35 1.1.4.2 rmind struct mbuf_head { 36 1.1.4.2 rmind struct mbuf *head; 37 1.1.4.2 rmind struct mbuf *tail; 38 1.1.4.2 rmind uint32_t qlen; 39 1.1.4.2 rmind struct mtx lock; 40 1.1.4.2 rmind }; 41 1.1.4.2 rmind 42 1.1.4.2 rmind static __inline void 43 1.1.4.2 rmind mbufq_init(struct mbuf_head *l) 44 1.1.4.2 rmind { 45 1.1.4.2 rmind l->head = l->tail = NULL; 46 1.1.4.2 rmind } 47 1.1.4.2 rmind 48 1.1.4.2 rmind static __inline int 49 1.1.4.2 rmind mbufq_empty(struct mbuf_head *l) 50 1.1.4.2 rmind { 51 1.1.4.2 rmind return (l->head == NULL); 52 1.1.4.2 rmind } 53 1.1.4.2 rmind 54 1.1.4.2 rmind static __inline int 55 1.1.4.2 rmind mbufq_len(struct mbuf_head *l) 56 1.1.4.2 rmind { 57 1.1.4.2 rmind return (l->qlen); 58 1.1.4.2 rmind } 59 1.1.4.2 rmind 60 1.1.4.2 rmind 61 1.1.4.2 rmind static __inline void 62 1.1.4.2 rmind mbufq_tail(struct mbuf_head *l, struct mbuf *m) 63 1.1.4.2 rmind { 64 1.1.4.2 rmind l->qlen++; 65 1.1.4.2 rmind l->tail->m_nextpkt = m; 66 1.1.4.2 rmind l->tail = m; 67 1.1.4.2 rmind } 68 1.1.4.2 rmind 69 1.1.4.2 rmind static __inline struct mbuf * 70 1.1.4.2 rmind mbufq_dequeue(struct mbuf_head *l) 71 1.1.4.2 rmind { 72 1.1.4.2 rmind struct mbuf *m; 73 1.1.4.2 rmind 74 1.1.4.2 rmind m = l->head; 75 1.1.4.2 rmind if (m) { 76 1.1.4.2 rmind if (m == l->tail) 77 1.1.4.2 rmind l->tail = NULL; 78 1.1.4.2 rmind l->head = m->m_nextpkt; 79 1.1.4.2 rmind l->qlen--; 80 1.1.4.2 rmind } 81 1.1.4.2 rmind 82 1.1.4.2 rmind return (m); 83 1.1.4.2 rmind } 84 1.1.4.2 rmind 85 1.1.4.2 rmind static __inline struct mbuf * 86 1.1.4.2 rmind mbufq_peek(struct mbuf_head *l) 87 1.1.4.2 rmind { 88 1.1.4.2 rmind return (l->head); 89 1.1.4.2 rmind } 90 1.1.4.2 rmind 91 1.1.4.2 rmind #endif /* CXGB_MBUFQ_H_ */ 92
Indexes created Wed Oct 29 12:09:47 GMT 2025