diff options
Diffstat (limited to 'freebsd/sys/net/netisr.h')
| -rw-r--r-- | freebsd/sys/net/netisr.h | 88 |
1 files changed, 83 insertions, 5 deletions
diff --git a/freebsd/sys/net/netisr.h b/freebsd/sys/net/netisr.h index 72e7f17f..cd692f6d 100644 --- a/freebsd/sys/net/netisr.h +++ b/freebsd/sys/net/netisr.h @@ -1,7 +1,11 @@ /*- * Copyright (c) 2007-2009 Robert N. M. Watson + * Copyright (c) 2010 Juniper Networks, Inc. * All rights reserved. * + * This software was developed by Robert N. M. Watson under contract + * to Juniper Networks, Inc. + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -28,7 +32,6 @@ #ifndef _NET_NETISR_H_ #define _NET_NETISR_H_ -#ifdef _KERNEL /* * The netisr (network interrupt service routine) provides a deferred @@ -39,6 +42,13 @@ * Historically, this was implemented by the BSD software ISR facility; it is * now implemented via a software ithread (SWI). */ + +/* + * Protocol numbers, which are encoded in monitoring applications and kernel + * modules. Internally, these are used in bit shift operations so must have + * a value 0 < proto < 32; we currently further limit at compile-time to 16 + * for array-sizing purposes. + */ #define NETISR_IP 1 #define NETISR_IGMP 2 /* IGMPv3 output queue */ #define NETISR_ROUTE 3 /* routing socket */ @@ -52,6 +62,78 @@ #define NETISR_NATM 11 #define NETISR_EPAIR 12 /* if_epair(4) */ +/* + * Protocol ordering and affinity policy constants. See the detailed + * discussion of policies later in the file. + */ +#define NETISR_POLICY_SOURCE 1 /* Maintain source ordering. */ +#define NETISR_POLICY_FLOW 2 /* Maintain flow ordering. */ +#define NETISR_POLICY_CPU 3 /* Protocol determines CPU placement. */ + +/* + * Monitoring data structures, exported by sysctl(2). + * + * Three sysctls are defined. First, a per-protocol structure exported by + * net.isr.proto. + */ +#define NETISR_NAMEMAXLEN 32 +struct sysctl_netisr_proto { + u_int snp_version; /* Length of struct. */ + char snp_name[NETISR_NAMEMAXLEN]; /* nh_name */ + u_int snp_proto; /* nh_proto */ + u_int snp_qlimit; /* nh_qlimit */ + u_int snp_policy; /* nh_policy */ + u_int snp_flags; /* Various flags. */ + u_int _snp_ispare[7]; +}; + +/* + * Flags for sysctl_netisr_proto.snp_flags. + */ +#define NETISR_SNP_FLAGS_M2FLOW 0x00000001 /* nh_m2flow */ +#define NETISR_SNP_FLAGS_M2CPUID 0x00000002 /* nh_m2cpuid */ +#define NETISR_SNP_FLAGS_DRAINEDCPU 0x00000004 /* nh_drainedcpu */ + +/* + * Next, a structure per-workstream, with per-protocol data, exported as + * net.isr.workstream. + */ +struct sysctl_netisr_workstream { + u_int snws_version; /* Length of struct. */ + u_int snws_flags; /* Various flags. */ + u_int snws_wsid; /* Workstream ID. */ + u_int snws_cpu; /* nws_cpu */ + u_int _snws_ispare[12]; +}; + +/* + * Flags for sysctl_netisr_workstream.snws_flags + */ +#define NETISR_SNWS_FLAGS_INTR 0x00000001 /* nws_intr_event */ + +/* + * Finally, a per-workstream-per-protocol structure, exported as + * net.isr.work. + */ +struct sysctl_netisr_work { + u_int snw_version; /* Length of struct. */ + u_int snw_wsid; /* Workstream ID. */ + u_int snw_proto; /* Protocol number. */ + u_int snw_len; /* nw_len */ + u_int snw_watermark; /* nw_watermark */ + u_int _snw_ispare[3]; + + uint64_t snw_dispatched; /* nw_dispatched */ + uint64_t snw_hybrid_dispatched; /* nw_hybrid_dispatched */ + uint64_t snw_qdrops; /* nw_qdrops */ + uint64_t snw_queued; /* nw_queued */ + uint64_t snw_handled; /* nw_handled */ + + uint64_t _snw_llspare[7]; +}; + +#ifdef _KERNEL + /*- * Protocols express ordering constraints and affinity preferences by * implementing one or neither of nh_m2flow and nh_m2cpuid, which are used by @@ -91,10 +173,6 @@ typedef struct mbuf *netisr_m2cpuid_t(struct mbuf *m, uintptr_t source, typedef struct mbuf *netisr_m2flow_t(struct mbuf *m, uintptr_t source); typedef void netisr_drainedcpu_t(u_int cpuid); -#define NETISR_POLICY_SOURCE 1 /* Maintain source ordering. */ -#define NETISR_POLICY_FLOW 2 /* Maintain flow ordering. */ -#define NETISR_POLICY_CPU 3 /* Protocol determines CPU placement. */ - /* * Data structure describing a protocol handler. */ |