author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 15 Sep 2010 14:02:55 +0300 | |
branch | RCL_3 |
changeset 64 | c44f36bb61a3 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/** @file ../include/net/if_var.h |
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@internalComponent |
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*/ |
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/** @struct ifnet |
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Structure defining a network interface. |
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ifnet and its related packet queues are protected by if_serializer. |
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Callers of if_output, if_ioctl, if_start, if_watchdog, if_init, if_resolvemulti, and if_poll hold if_serializer. |
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Device drivers usually use the same serializer for their interrupt but this is not required. |
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However, the device driver must be holding if_serializer when it calls if_input. |
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Note that the serializer may be temporarily released within if_input to avoid a deadlock (e.g. when fast-forwarding or bridging packets between interfaces). |
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If a device driver installs the same serializer for its interrupt as for ifnet, then the driver only really needs to worry about further serialization in timeout based entry points. |
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All other entry points will already be serialized. Older ISA drivers still using the old interrupt infrastructure will have to obtain and release the serializer in their interrupt routine themselves. |
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@publishedAll |
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@externallyDefinedApi |
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*/ |
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/** @struct ifaddr |
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The ifaddr structure contains information about one address of an interface. |
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They are maintained by the different address families, are allocated and attached when an address is set, and are linked together so all addresses for an interface can be located. |
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@publishedAll |
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@externallyDefinedApi |
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*/ |
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/** @var ifaddr::ifa_addr |
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address of interface |
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*/ |
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/** @var ifaddr::ifa_dstaddr |
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other end of p-to-p link |
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*/ |
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/** @var ifaddr::ifa_netmask |
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used to determine subnet |
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*/ |
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/** @var ifaddr::if_data |
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not all members are meaningful |
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*/ |
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/** @var ifaddr::ifa_ifp |
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back-pointer to interface |
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*/ |
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/** @var ifaddr::ifa_link |
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queue macro glue |
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*/ |
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/** @var ifaddr::ifa_rtrequest |
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check or clean routes |
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*/ |
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/** @var ifaddr::ifa_flags |
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mostly rt_flags for cloning |
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*/ |
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/** @var ifaddr::ifa_refcnt |
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references to this structure |
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*/ |
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/** @var ifaddr::ifa_metric |
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cost of going out this interface |
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*/ |
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/** @var ifaddr::ifa_rt |
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XXXX for ROUTETOIF |
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*/ |
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/** @var ifaddr::ifa_claim_addr |
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check if an addr goes to this if |
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*/ |
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/** @struct ifqueue |
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Structure defining a queue for a network interface. |
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@publishedAll |
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@released |
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*/ |
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/** @struct ifmultiaddr |
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Multicast address structure. This is analogous to the ifaddr structure except that it keeps track of multicast addresses. |
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Also, the reference count here is a count of requests for this address, not a count of pointers to this structure. |
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@publishedAll |
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@released |
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*/ |
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/** @var ifmultiaddr::ifma_link |
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queue macro glue |
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*/ |
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/** @var ifmultiaddr::ifma_addr |
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address this membership is for |
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*/ |
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/** @var ifmultiaddr::ifma_lladdr |
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link-layer translation, if any |
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*/ |
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/** @var ifmultiaddr::ifma_ifp |
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back-pointer to interface |
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*/ |
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/** @var ifmultiaddr::ifma_refcount |
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reference count |
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*/ |
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/** @var ifmultiaddr::ifma_protospec |
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protocol-specific state, if any |
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*/ |
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/** @def IF_QFULL(ifq) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_DROP(ifq) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_QLEN(ifq) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_QEMPTY(ifq) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_ENQUEUE(ifq, m) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_PREPEND(ifq, m) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_DEQUEUE(ifq, m) |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_POLL(ifq, m) |
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polling related function. |
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@publishedAll |
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@released |
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*/ |
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/** @def IF_DRAIN(ifq) |
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To drain a queue |
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@publishedAll |
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@released |
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*/ |
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