Thu, Aug 25, 2016 at 06:23:34PM CEST, [email protected] wrote:
>From: Jiri Pirko <[email protected]>
>
>When team is in bridge and LACP is utilized, LACPDU packets are pushed
>to userspace using raw socket and there they are processed. However,
>since 8626c56c8279b, LACPDU skbs are dropped by bridge rx_handler so
>they never reach packet handlers in rx path. Fix this by explicity treat
>LACPDUs to be pushed to exact delivery in team rx_handler.
>
>Reported-by: Ido Schimmel <[email protected]>
>Fixes: 8626c56c8279b ("bridge: fix potential use-after-free when hook returns
>QUEUE or STOLEN verdict")
>Signed-off-by: Jiri Pirko <[email protected]>
>---
> drivers/net/team/team_mode_loadbalance.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
>diff --git a/drivers/net/team/team_mode_loadbalance.c
>b/drivers/net/team/team_mode_loadbalance.c
>index cdb19b3..e7c8210 100644
>--- a/drivers/net/team/team_mode_loadbalance.c
>+++ b/drivers/net/team/team_mode_loadbalance.c
>@@ -17,6 +17,19 @@
> #include <linux/filter.h>
> #include <linux/if_team.h>
Forgot an include :( Sent v2.
>
>+static rx_handler_result_t lb_receive(struct team *team, struct team_port
>*port,
>+ struct sk_buff *skb)
>+{
>+ if (unlikely(skb->protocol == htons(ETH_P_SLOW))) {
>+ /* LACPDU packets should go to exact delivery */
>+ const unsigned char *dest = eth_hdr(skb)->h_dest;
>+
>+ if (is_link_local_ether_addr(dest) && dest[5] == 0x02)
>+ return RX_HANDLER_EXACT;
>+ }
>+ return RX_HANDLER_ANOTHER;
>+}
>+
> struct lb_priv;
>
> typedef struct team_port *lb_select_tx_port_func_t(struct team *,
>@@ -652,6 +665,7 @@ static const struct team_mode_ops lb_mode_ops = {
> .port_enter = lb_port_enter,
> .port_leave = lb_port_leave,
> .port_disabled = lb_port_disabled,
>+ .receive = lb_receive,
> .transmit = lb_transmit,
> };
>
>--
>2.5.5
>
