cxgb_mbuf.h revision 1.1.6.2
1 1.1.6.2 yamt /************************************************************************** 2 1.1.6.2 yamt 3 1.1.6.2 yamt Copyright (c) 2007, Chelsio Inc. 4 1.1.6.2 yamt All rights reserved. 5 1.1.6.2 yamt 6 1.1.6.2 yamt Redistribution and use in source and binary forms, with or without 7 1.1.6.2 yamt modification, are permitted provided that the following conditions are met: 8 1.1.6.2 yamt 9 1.1.6.2 yamt 1. Redistributions of source code must retain the above copyright notice, 10 1.1.6.2 yamt this list of conditions and the following disclaimer. 11 1.1.6.2 yamt 12 1.1.6.2 yamt 2. Neither the name of the Chelsio Corporation nor the names of its 13 1.1.6.2 yamt contributors may be used to endorse or promote products derived from 14 1.1.6.2 yamt this software without specific prior written permission. 15 1.1.6.2 yamt 16 1.1.6.2 yamt THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 1.1.6.2 yamt AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1.6.2 yamt IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1.6.2 yamt ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 1.1.6.2 yamt LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1.6.2 yamt CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1.6.2 yamt SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1.6.2 yamt INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1.6.2 yamt CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1.6.2 yamt ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1.6.2 yamt POSSIBILITY OF SUCH DAMAGE. 27 1.1.6.2 yamt 28 1.1.6.2 yamt ***************************************************************************/ 29 1.1.6.2 yamt 30 1.1.6.2 yamt #ifndef CXGB_MBUFQ_H_ 31 1.1.6.2 yamt #define CXGB_MBUFQ_H_ 32 1.1.6.2 yamt 33 1.1.6.2 yamt #include <sys/mbuf.h> 34 1.1.6.2 yamt 35 1.1.6.2 yamt struct mbuf_head { 36 1.1.6.2 yamt struct mbuf *head; 37 1.1.6.2 yamt struct mbuf *tail; 38 1.1.6.2 yamt uint32_t qlen; 39 1.1.6.2 yamt struct mtx lock; 40 1.1.6.2 yamt }; 41 1.1.6.2 yamt 42 1.1.6.2 yamt static __inline void 43 1.1.6.2 yamt mbufq_init(struct mbuf_head *l) 44 1.1.6.2 yamt { 45 1.1.6.2 yamt l->head = l->tail = NULL; 46 1.1.6.2 yamt } 47 1.1.6.2 yamt 48 1.1.6.2 yamt static __inline int 49 1.1.6.2 yamt mbufq_empty(struct mbuf_head *l) 50 1.1.6.2 yamt { 51 1.1.6.2 yamt return (l->head == NULL); 52 1.1.6.2 yamt } 53 1.1.6.2 yamt 54 1.1.6.2 yamt static __inline int 55 1.1.6.2 yamt mbufq_len(struct mbuf_head *l) 56 1.1.6.2 yamt { 57 1.1.6.2 yamt return (l->qlen); 58 1.1.6.2 yamt } 59 1.1.6.2 yamt 60 1.1.6.2 yamt 61 1.1.6.2 yamt static __inline void 62 1.1.6.2 yamt mbufq_tail(struct mbuf_head *l, struct mbuf *m) 63 1.1.6.2 yamt { 64 1.1.6.2 yamt l->qlen++; 65 1.1.6.2 yamt l->tail->m_nextpkt = m; 66 1.1.6.2 yamt l->tail = m; 67 1.1.6.2 yamt } 68 1.1.6.2 yamt 69 1.1.6.2 yamt static __inline struct mbuf * 70 1.1.6.2 yamt mbufq_dequeue(struct mbuf_head *l) 71 1.1.6.2 yamt { 72 1.1.6.2 yamt struct mbuf *m; 73 1.1.6.2 yamt 74 1.1.6.2 yamt m = l->head; 75 1.1.6.2 yamt if (m) { 76 1.1.6.2 yamt if (m == l->tail) 77 1.1.6.2 yamt l->tail = NULL; 78 1.1.6.2 yamt l->head = m->m_nextpkt; 79 1.1.6.2 yamt l->qlen--; 80 1.1.6.2 yamt } 81 1.1.6.2 yamt 82 1.1.6.2 yamt return (m); 83 1.1.6.2 yamt } 84 1.1.6.2 yamt 85 1.1.6.2 yamt static __inline struct mbuf * 86 1.1.6.2 yamt mbufq_peek(struct mbuf_head *l) 87 1.1.6.2 yamt { 88 1.1.6.2 yamt return (l->head); 89 1.1.6.2 yamt } 90 1.1.6.2 yamt 91 1.1.6.2 yamt #endif /* CXGB_MBUFQ_H_ */ 92
Indexes created Fri Oct 31 11:10:07 GMT 2025