simplify locking in find_pfxlist_reachable_router
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86cd829d64
commit
d78be3a909
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=186162
@ -1329,19 +1329,20 @@ find_pfxlist_reachable_router(struct nd_prefix *pr)
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{
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struct nd_pfxrouter *pfxrtr;
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struct llentry *ln;
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int canreach;
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for (pfxrtr = LIST_FIRST(&pr->ndpr_advrtrs); pfxrtr;
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pfxrtr = LIST_NEXT(pfxrtr, pfr_entry)) {
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IF_AFDATA_LOCK(pfxrtr->router->ifp);
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if (((ln = nd6_lookup(&pfxrtr->router->rtaddr, 0,
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pfxrtr->router->ifp)) != NULL) &&
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ND6_IS_LLINFO_PROBREACH(ln)) {
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LLE_RUNLOCK(ln);
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break; /* found */
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}
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if (ln != NULL)
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LLE_RUNLOCK(ln);
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ln = nd6_lookup(&pfxrtr->router->rtaddr, 0, pfxrtr->router->ifp);
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IF_AFDATA_UNLOCK(pfxrtr->router->ifp);
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canreach = 0;
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if (ln != NULL) {
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canreach = ND6_IS_LLINFO_PROBREACH(ln);
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LLE_RUNLOCK(ln);
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}
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if (canreach)
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break;
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}
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return (pfxrtr);
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}
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