diff options
| author | Zoltan Kiss <[email protected]> | 2014-06-04 19:58:51 +0100 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2014-06-05 15:09:08 -0700 |
| commit | 59ae9fc67007da8b5aea7b0a31c3607745cfbfee (patch) | |
| tree | 908947ac0c763df0e3046e69b8e99e2e386d1762 /kernel/locking/mutex-debug.c | |
| parent | c531692073847fe64635f6992d774fb319e3529a (diff) | |
xen-netback: Fix handling of skbs requiring too many slots
A recent commit (a02eb4 "xen-netback: worse-case estimate in xenvif_rx_action is
underestimating") capped the slot estimation to MAX_SKB_FRAGS, but that triggers
the next BUG_ON a few lines down, as the packet consumes more slots than
estimated.
This patch introduces full_coalesce on the skb callback buffer, which is used in
start_new_rx_buffer() to decide whether netback needs coalescing more
aggresively. By doing that, no packet should need more than
(XEN_NETIF_MAX_TX_SIZE + 1) / PAGE_SIZE data slots (excluding the optional GSO
slot, it doesn't carry data, therefore irrelevant in this case), as the provided
buffers are fully utilized.
Signed-off-by: Zoltan Kiss <[email protected]>
Cc: Paul Durrant <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: David Vrabel <[email protected]>
Reviewed-by: Paul Durrant <[email protected]>
Acked-by: Wei Liu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'kernel/locking/mutex-debug.c')
0 files changed, 0 insertions, 0 deletions