nfp: flower: check that we don't exceed the FW key size (e4cab45a) · Commits · 戴 / test

drivers/net/ethernet/netronome/nfp/flower/main.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,8 @@ struct nfp_app;
		#define NFP_FLOWER_MASK_ELEMENT_RS 1
		#define NFP_FLOWER_MASK_HASH_BITS 10

		#define NFP_FLOWER_KEY_MAX_LW 32

		#define NFP_FL_META_FLAG_MANAGE_MASK BIT(7)

		#define NFP_FL_MASK_REUSE_TIME_NS 40000

+11 −0

Original line number	Diff line number	Diff line
		@@ -434,6 +434,7 @@ int nfp_flower_compile_flow_match(struct nfp_app *app,
		{
		struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
		u32 port_id;
		int ext_len;
		int err;
		u8 *ext;
		u8 *msk;
		@@ -589,5 +590,15 @@ int nfp_flower_compile_flow_match(struct nfp_app *app,
		}
		}

		/* Check that the flow key does not exceed the maximum limit.
		* All structures in the key is multiples of 4 bytes, so use u32.
		*/
		ext_len = (u32 )ext - (u32 )nfp_flow->unmasked_data;
		if (ext_len > NFP_FLOWER_KEY_MAX_LW) {
		NL_SET_ERR_MSG_MOD(extack,
		"unsupported offload: flow key too long");
		return -EOPNOTSUPP;
		}

		return 0;
		}