On Fri, Jun 28, 2013 at 08:05:06AM -0700, Eric Dumazet wrote: > From: Eric Dumazet <edumazet@xxxxxxxxxx> > > Steinar reported reallocations of skb->head with IPv6, leading to > a warning in skb_try_coalesce() > > It turns out iwl3945 has several problems : > > 1) skb->truesize is underestimated. > We really consume PAGE_SIZE bytes for a fragment, > not the frame length. > 2) 128 bytes of initial headroom is a bit low and forces reallocations. > 3) We can avoid consuming a full page for small enough frames. > > Reported-by: Steinar H. Gunderson <sesse@xxxxxxxxxx> > Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx> > Cc: Paul Stewart <pstew@xxxxxxxxxx> Acked-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx> FYI, I'll post 4965 version soon. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
