Add if_addr_mtx to struct ifnet, a mutex to protect ifnet-related address
lists. Add accessor macros. This changes the size of struct ifnet, but ideally, all ifnet consumers are now using if_alloc() to allocate these structures rather than embedding them into device driver softc's, so this won't modify the network device driver ABI. MFC after: 1 week
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parent
c20990577c
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de6073aab0
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=148640
@ -179,6 +179,7 @@ struct ifnet {
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struct mtx if_afdata_mtx;
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struct task if_starttask; /* task for IFF_NEEDSGIANT */
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struct task if_linktask; /* task for link change events */
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struct mtx if_addr_mtx; /* mutex to protect address lists */
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};
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typedef void if_init_f_t(void *);
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@ -216,6 +217,16 @@ typedef void if_init_f_t(void *);
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#define if_addrlist if_addrhead
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#define if_list if_link
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/*
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* Locks for address lists on the network interface.
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*/
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#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_mtx, \
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"if_addr_mtx", NULL, MTX_DEF)
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#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_mtx)
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#define IF_ADDR_LOCK(if) mtx_lock(&(if)->if_addr_mtx)
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#define IF_ADDR_UNLOCK(if) mtx_unlock(&(if)->if_addr_mtx)
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#define IF_ADDR_LOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED)
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/*
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* Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
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* are queues of messages stored on ifqueue structures
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