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| author | msmith <msmith@FreeBSD.org> | 1999-10-15 05:07:00 +0000 |
|---|---|---|
| committer | msmith <msmith@FreeBSD.org> | 1999-10-15 05:07:00 +0000 |
| commit | 010a32d6458bd7e412e002c28e3878b4705e31d4 (patch) | |
| tree | c7ec9ce93e079a077a5d74249290ab77984e574c /sys/net/bpf.c | |
| parent | d21234b78cc7e611247dffae6bf6c15ac69b667a (diff) | |
| download | FreeBSD-src-010a32d6458bd7e412e002c28e3878b4705e31d4.zip FreeBSD-src-010a32d6458bd7e412e002c28e3878b4705e31d4.tar.gz | |
Implement pseudo_AF_HDRCMPLT, which controls the state of the 'header
completion' flag. If set, the interface output routine will assume that
the packet already has a valid link-level source address. This defaults
to off (the address is overwritten)
PR: kern/10680
Submitted by: "Christopher N . Harrell" <cnh@mindspring.net>
Obtained from: NetBSD
Diffstat (limited to 'sys/net/bpf.c')
| -rw-r--r-- | sys/net/bpf.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c index 6876ab2..5bd8ed5 100644 --- a/sys/net/bpf.c +++ b/sys/net/bpf.c @@ -579,6 +579,9 @@ bpfwrite(dev, uio, ioflag) if (datlen > ifp->if_mtu) return (EMSGSIZE); + if (d->bd_hdrcmplt) + dst.sa_family = pseudo_AF_HDRCMPLT; + s = splnet(); #if BSD >= 199103 error = (*ifp->if_output)(ifp, m, &dst, (struct rtentry *)0); @@ -626,6 +629,8 @@ reset_d(d) * BIOCGSTATS Get packet stats. * BIOCIMMEDIATE Set immediate mode. * BIOCVERSION Get filter language version. + * BIOCGHDRCMPLT Get "header already complete" flag + * BIOCSHDRCMPLT Set "header already complete" flag */ /* ARGSUSED */ static int @@ -822,6 +827,20 @@ bpfioctl(dev, cmd, addr, flags, p) break; } + /* + * Get "header already complete" flag + */ + case BIOCGHDRCMPLT: + *(u_int *)addr = d->bd_hdrcmplt; + break; + + /* + * Set "header already complete" flag + */ + case BIOCSHDRCMPLT: + d->bd_hdrcmplt = *(u_int *)addr ? 1 : 0; + break; + case FIONBIO: /* Non-blocking I/O */ break; |
