Various bpf(4) related fixes to catch places up to the new bpf(4)

semantics.
- Stop testing bpf pointers for NULL.  In some cases use
  bpf_peers_present() and then call the function directly inside the
  conditional block instead of the macro.
- For places where the entire conditional block is the macro, remove the
  test and make the macro unconditional.
- Use BPF_MTAP() in if_pfsync on FreeBSD instead of an expanded version of
  the old semantics.

Reviewed by:	csjp (older version)

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/net/if_enc.c b/sys/net/if_enc.c
index 3875689..e8d279c 100644
--- a/sys/net/if_enc.c
+++ b/sys/net/if_enc.c
@@ -280,7 +280,7 @@ ipsec_bpf(struct mbuf *m, struct secasvar *sav, int af)
 	if ((encif->if_drv_flags & IFF_DRV_RUNNING) == 0)
 		return;
 
-	if (encif->if_bpf) {
+	if (bpf_peers_present(encif->if_bpf)) {
 		flags = 0;
 		if (sav->alg_enc != SADB_EALG_NONE)
 			flags |= M_CONF;