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nfp: add whitelist of supported flow dissector 

Previously we did not check the flow dissector against a list of allowed
and supported flow key dissectors. This patch introduces such a list and
correctly rejects unsupported flow keys.

Fixes: 43f84b72c5 ("nfp: add metadata to each flow offload")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren 2017-09-13 10:15:58 -07:00 committed by David S. Miller
parent 255cd50f20
commit b95a2d831b
1 changed files with 13 additions and 0 deletions
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13
drivers/net/ethernet/netronome/nfp/flower/offload.c
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@ -44,6 +44,16 @@
#include "../nfp_net.h"
#include "../nfp_port.h"
#define NFP_FLOWER_WHITELIST_DISSECTOR \
(BIT(FLOW_DISSECTOR_KEY_CONTROL) | \
BIT(FLOW_DISSECTOR_KEY_BASIC) | \
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | \
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | \
BIT(FLOW_DISSECTOR_KEY_PORTS) | \
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | \
BIT(FLOW_DISSECTOR_KEY_VLAN) | \
BIT(FLOW_DISSECTOR_KEY_IP))
static int
nfp_flower_xmit_flow(struct net_device *netdev,
struct nfp_fl_payload *nfp_flow, u8 mtype)
@ -112,6 +122,9 @@ nfp_flower_calculate_key_layers(struct nfp_fl_key_ls *ret_key_ls,
u8 key_layer;
int key_size;
if (flow->dissector->used_keys & ~NFP_FLOWER_WHITELIST_DISSECTOR)
return -EOPNOTSUPP;
if (dissector_uses_key(flow->dissector,
FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
struct flow_dissector_key_control *mask_enc_ctl =