Re: [PATCH for-next] RDMA/rxe: Fix packet length checks

[Bob Pearson <rpearsonhpe@gmail.com>]

On 6/1/23 12:33, Jason Gunthorpe wrote:
> On Wed, May 17, 2023 at 12:22:42PM -0500, Bob Pearson wrote:
>> In rxe_net.c a received packet, from udp or loopback, is passed
>> to rxe_rcv() in rxe_recv.c as a udp packet. I.e. skb->data is
>> pointing at the udp header. But rxe_rcv() makes length checks
>> to verify the packet is long enough to hold the roce headers as
>> if it were a roce packet. I.e. skb->data pointing at the bth
>> header. A runt packet would appear to have 8 more bytes than it
>> actually does which may lead to incorrect behavior.
>>
>> This patch calls skb_pull() to adjust the skb to point at the
>> bth header before calling rxe_rcv() which fixes this error.
>>
>> Fixes: 8700e3e7c485 ("Soft RoCE driver")
>> Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
>> ---
>>  drivers/infiniband/sw/rxe/rxe_net.c | 6 ++++++
>>  1 file changed, 6 insertions(+)
> 
> Applied to for-rc, thanks
> 
> Jason
thanks