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Use network epoch to protect local IPv4 addresses hash.

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The modification to the hash are already naturally locked by
in_control_sx.  Convert the hash lists to CK lists. Remove the
in_ifaddr_rmlock. Assert the network epoch where necessary.

Most cases when the hash lookup is done the epoch is already entered.
Cover a few cases, that need entering the epoch, which mostly is
initial configuration of tunnel interfaces and multicast addresses.

Reviewed by:		melifaro
Differential revision:	https://reviews.freebsd.org/D32584
This commit is contained in:
Gleb Smirnoff
2021-10-10 10:02:26 -07:00
committed by Sebastian Huber
parent 7846249e1a
commit 94c33ba992
1 changed files with 4 additions and 0 deletions
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4
cpukit/include/machine/_kernel_in.h
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@@ -50,7 +50,11 @@ int in_broadcast(struct in_addr, struct ifnet *);
int in_ifaddr_broadcast(struct in_addr, struct in_ifaddr *);
int in_canforward(struct in_addr);
int in_localaddr(struct in_addr);
#if __FreeBSD_version >= 1400039
bool in_localip(struct in_addr);
#else
int in_localip(struct in_addr);
#endif
int in_ifhasaddr(struct ifnet *, struct in_addr);
struct in_ifaddr *in_findlocal(uint32_t, bool);
int inet_aton(const char *, struct in_addr *); /* in libkern */