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| author | Martin Blumenstingl <[email protected]> | 2015-11-22 16:46:09 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-11-30 03:17:17 +0000 |
| commit | 880621c2605b82eb5af91a2c94223df6f5a3fb64 (patch) | |
| tree | b1a1799ef943f2aa04d35530e47dae15282cb2ab /net/unix/af_unix.c | |
| parent | bpf: fix clearing on persistent program array maps (diff) | |
| download | kernel-880621c2605b82eb5af91a2c94223df6f5a3fb64.tar.gz kernel-880621c2605b82eb5af91a2c94223df6f5a3fb64.zip | |
packet: Allow packets with only a header (but no payload)
Commit 9c7077622dd91 ("packet: make packet_snd fail on len smaller
than l2 header") added validation for the packet size in packet_snd.
This change enforces that every packet needs a header (with at least
hard_header_len bytes) plus a payload with at least one byte. Before
this change the payload was optional.
This fixes PPPoE connections which do not have a "Service" or
"Host-Uniq" configured (which is violating the spec, but is still
widely used in real-world setups). Those are currently failing with the
following message: "pppd: packet size is too short (24 <= 24)"
Signed-off-by: Martin Blumenstingl <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions