2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
5 * This code is derived from software contributed to The DragonFly Project
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62 * @(#)netisr.h 8.1 (Berkeley) 6/10/93
63 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $
66 #ifndef _NET_NETISR2_H_
67 #define _NET_NETISR2_H_
70 #error "kernel only header file"
73 #include <sys/systm.h>
74 #include <sys/msgport2.h>
75 #include <sys/thread.h>
76 #include <net/netisr.h>
78 extern struct thread *netisr_cpu[MAXCPU];
81 * Return the message port for the general protocol message servicing
82 * thread for a particular cpu.
84 static __inline lwkt_port_t
85 netisr_cpuport(int cpu)
87 KKASSERT(cpu >= 0 && cpu < ncpus);
88 return &netisr_cpu[cpu]->td_msgport;
92 * Return the current cpu's network protocol thread.
94 static __inline lwkt_port_t
97 return netisr_cpuport(mycpuid);
101 * Return the cpu for the hash.
104 netisr_hashcpu(uint16_t hash)
106 return (hash & ncpus2_mask);
110 * Return the message port for the general protocol message servicing
111 * thread for the hash.
113 static __inline lwkt_port_t
114 netisr_hashport(uint16_t hash)
116 return netisr_cpuport(netisr_hashcpu(hash));
119 #define IS_NETISR(td, n) (&(td)->td_msgport == netisr_cpuport((n)))
120 #define ASSERT_IS_NETISR(td, n) \
121 KASSERT(IS_NETISR((td), (n)), ("thread %p is not netisr%d", (td), (n)))
122 #define ASSERT_IN_NETISR(n) ASSERT_IS_NETISR(curthread, (n))
123 #define ASSERT_CANDOMSG_NETISR0(td) \
124 KASSERT((td)->td_type != TD_TYPE_NETISR || IS_NETISR((td), 0), \
125 ("can't domsg to netisr0 from thread %p", (td)))
128 netisr_domsg_port(struct netmsg_base *nm, lwkt_port_t port)
132 if (port == netisr_cpuport(0))
133 ASSERT_CANDOMSG_NETISR0(curthread);
135 return (lwkt_domsg(port, &nm->lmsg, 0));
139 netisr_domsg(struct netmsg_base *nm, int cpu)
142 return (netisr_domsg_port(nm, netisr_cpuport(cpu)));
146 netisr_sendmsg(struct netmsg_base *nm, int cpu)
149 lwkt_sendmsg(netisr_cpuport(cpu), &nm->lmsg);
153 netisr_replymsg(struct netmsg_base *nm, int error)
156 lwkt_replymsg(&nm->lmsg, error);
160 netisr_forwardmsg(struct netmsg_base *nm, int next_cpu)
163 KKASSERT(next_cpu > mycpuid && next_cpu <= ncpus);
164 if (next_cpu < ncpus)
165 lwkt_forwardmsg(netisr_cpuport(next_cpu), &nm->lmsg);
167 netisr_replymsg(nm, 0);
170 #endif /* _NET_NETISR2_H_ */