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
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
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15 * documentation and/or other materials provided with the distribution.
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17 * contributors may be used to endorse or promote products derived
18 * from this software without specific, prior written permission.
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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_threads
[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_threads
[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 LSB of the hash.
103 static __inline
uint32_t
104 netisr_hashlsb(uint32_t hash
)
107 return (hash
& NETISR_CPUMASK
);
111 * Return the cpu for the hash.
114 netisr_hashcpu(uint16_t hash
)
117 return (netisr_hashlsb(hash
) % netisr_ncpus
);
121 * Return the message port for the general protocol message servicing
122 * thread for the hash.
124 static __inline lwkt_port_t
125 netisr_hashport(uint16_t hash
)
127 return netisr_cpuport(netisr_hashcpu(hash
));
130 #define IS_NETISR(td, n) (&(td)->td_msgport == netisr_cpuport((n)))
131 #define ASSERT_IS_NETISR(td, n) \
132 KASSERT(IS_NETISR((td), (n)), ("thread %p is not netisr%d", (td), (n)))
133 #define ASSERT_IN_NETISR(n) ASSERT_IS_NETISR(curthread, (n))
134 #define ASSERT_CANDOMSG_NETISR0(td) \
135 KASSERT((td)->td_type != TD_TYPE_NETISR || IS_NETISR((td), 0), \
136 ("can't domsg to netisr0 from thread %p", (td)))
139 netisr_domsg_port(struct netmsg_base
*nm
, lwkt_port_t port
)
143 if (port
== netisr_cpuport(0))
144 ASSERT_CANDOMSG_NETISR0(curthread
);
146 return (lwkt_domsg(port
, &nm
->lmsg
, 0));
150 netisr_domsg(struct netmsg_base
*nm
, int cpu
)
153 return (netisr_domsg_port(nm
, netisr_cpuport(cpu
)));
157 netisr_sendmsg(struct netmsg_base
*nm
, int cpu
)
160 lwkt_sendmsg(netisr_cpuport(cpu
), &nm
->lmsg
);
164 netisr_replymsg(struct netmsg_base
*nm
, int error
)
167 lwkt_replymsg(&nm
->lmsg
, error
);
171 netisr_forwardmsg(struct netmsg_base
*nm
, int next_cpu
)
174 KKASSERT(next_cpu
> mycpuid
&& next_cpu
<= ncpus
);
175 if (next_cpu
< ncpus
)
176 lwkt_forwardmsg(netisr_cpuport(next_cpu
), &nm
->lmsg
);
178 netisr_replymsg(nm
, 0);
181 #endif /* _NET_NETISR2_H_ */