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authorrwatson <rwatson@FreeBSD.org>2005-02-28 12:35:52 +0000
committerrwatson <rwatson@FreeBSD.org>2005-02-28 12:35:52 +0000
commit3cc07fe4d655fff6274b2ed654ced7f3a81d52ad (patch)
tree649ed36a771f3a514dc0394786f8e89c608e82e9
parent3bad63fb1db495bebcabf60cafb7bcc6d1a28d9e (diff)
downloadFreeBSD-src-3cc07fe4d655fff6274b2ed654ced7f3a81d52ad.zip
FreeBSD-src-3cc07fe4d655fff6274b2ed654ced7f3a81d52ad.tar.gz
Update a comment describing bpf_iflist to indicate that the BPF interface
structures correspond to specific link layers, so the same network interface may appear more than once. MFC after: 3 days
-rw-r--r--sys/net/bpf.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c
index 234e414..a9734ab 100644
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@@ -89,7 +89,10 @@ SYSCTL_INT(_debug, OID_AUTO, bpf_maxbufsize, CTLFLAG_RW,
&bpf_maxbufsize, 0, "");
/*
- * bpf_iflist is the list of interfaces; each corresponds to an ifnet
+ * bpf_iflist is a list of BPF interface structures, each corresponding to a
+ * specific DLT. The same network interface might have several BPF interface
+ * structures registered by different layers in the stack (i.e., 802.11
+ * frames, ethernet frames, etc).
*/
static LIST_HEAD(, bpf_if) bpf_iflist;
static struct mtx bpf_mtx; /* bpf global lock */
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