diff mbox series

[5/5] net/cxgbe: ignore flow default masks for unrequested fields

Message ID 95e8f14d0b8c523b69a9c2af29da2ba55e7d0628.1591998771.git.rahul.lakkireddy@chelsio.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers
Series net/cxgbe: fix rte_flow related hardware resource leaks |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/travis-robot success Travis build: passed
ci/Intel-compilation success Compilation OK

Commit Message

Rahul Lakkireddy June 12, 2020, 10:07 p.m. UTC 
  commit 536db938a444 ("net/cxgbe: add devargs to control filtermode and
filtermask") allows configuring hardware to select specific combination
of header fields to match in the incoming packets. However, the default
mask is set for all fields in the requested pattern items, even if the
field is not explicitly set in the combination and results in
validation errors. To prevent this, ignore setting the default masks
for the unrequested fields and the hardware will also ignore them in
validation, accordingly. Also, tweak the filter spec before finalizing
the masks.

Fixes: 536db938a444 ("net/cxgbe: add devargs to control filtermode and filtermask")
Cc: stable@dpdk.org

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
---
 drivers/net/cxgbe/cxgbe_flow.c | 109 ++++++++++++++++++++++-----------
 1 file changed, 74 insertions(+), 35 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/cxgbe/cxgbe_flow.c b/drivers/net/cxgbe/cxgbe_flow.c
index dd8ee7bbd..f7c4f3696 100644
--- a/drivers/net/cxgbe/cxgbe_flow.c
+++ b/drivers/net/cxgbe/cxgbe_flow.c
@@ -188,19 +188,22 @@  ch_rte_parsetype_eth(const void *dmask, const struct rte_flow_item *item,
 		return 0;
 
 	/* we don't support SRC_MAC filtering*/
-	if (!rte_is_zero_ether_addr(&mask->src))
+	if (!rte_is_zero_ether_addr(&spec->src) ||
+	    (umask && !rte_is_zero_ether_addr(&umask->src)))
 		return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 					  item,
 					  "src mac filtering not supported");
 
-	if (!rte_is_zero_ether_addr(&mask->dst)) {
+	if (!rte_is_zero_ether_addr(&spec->dst) ||
+	    (umask && !rte_is_zero_ether_addr(&umask->dst))) {
 		CXGBE_FILL_FS(0, 0x1ff, macidx);
 		CXGBE_FILL_FS_MEMCPY(spec->dst.addr_bytes, mask->dst.addr_bytes,
 				     dmac);
 	}
 
-	CXGBE_FILL_FS(be16_to_cpu(spec->type),
-		      be16_to_cpu(mask->type), ethtype);
+	if (spec->type || (umask && umask->type))
+		CXGBE_FILL_FS(be16_to_cpu(spec->type),
+			      be16_to_cpu(mask->type), ethtype);
 
 	return 0;
 }
@@ -224,7 +227,8 @@  ch_rte_parsetype_port(const void *dmask, const struct rte_flow_item *item,
 					  item,
 					  "port index up to 0x7 is supported");
 
-	CXGBE_FILL_FS(val->index, mask->index, iport);
+	if (val->index || (umask && umask->index))
+		CXGBE_FILL_FS(val->index, mask->index, iport);
 
 	return 0;
 }
@@ -265,24 +269,24 @@  ch_rte_parsetype_vlan(const void *dmask, const struct rte_flow_item *item,
 	if (fs->val.ethtype == RTE_ETHER_TYPE_QINQ) {
 		CXGBE_FILL_FS(1, 1, ovlan_vld);
 		if (spec) {
-			CXGBE_FILL_FS(be16_to_cpu(spec->tci),
-				      be16_to_cpu(mask->tci), ovlan);
-
+			if (spec->tci || (umask && umask->tci))
+				CXGBE_FILL_FS(be16_to_cpu(spec->tci),
+					      be16_to_cpu(mask->tci), ovlan);
 			fs->mask.ethtype = 0;
 			fs->val.ethtype = 0;
 		}
 	} else if (fs->val.ethtype == RTE_ETHER_TYPE_VLAN) {
 		CXGBE_FILL_FS(1, 1, ivlan_vld);
 		if (spec) {
-			CXGBE_FILL_FS(be16_to_cpu(spec->tci),
-				      be16_to_cpu(mask->tci), ivlan);
-
+			if (spec->tci || (umask && umask->tci))
+				CXGBE_FILL_FS(be16_to_cpu(spec->tci),
+					      be16_to_cpu(mask->tci), ivlan);
 			fs->mask.ethtype = 0;
 			fs->val.ethtype = 0;
 		}
 	}
 
-	if (spec)
+	if (spec && (spec->inner_type || (umask && umask->inner_type)))
 		CXGBE_FILL_FS(be16_to_cpu(spec->inner_type),
 			      be16_to_cpu(mask->inner_type), ethtype);
 
@@ -328,7 +332,8 @@  ch_rte_parsetype_vf(const void *dmask, const struct rte_flow_item *item,
 					  item,
 					  "VF ID > MAX(255)");
 
-	CXGBE_FILL_FS(val->id, mask->id, vf);
+	if (val->id || (umask && umask->id))
+		CXGBE_FILL_FS(val->id, mask->id, vf);
 
 	return 0;
 }
@@ -352,10 +357,15 @@  ch_rte_parsetype_udp(const void *dmask, const struct rte_flow_item *item,
 	CXGBE_FILL_FS(IPPROTO_UDP, 0xff, proto);
 	if (!val)
 		return 0;
-	CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
-		      be16_to_cpu(mask->hdr.src_port), fport);
-	CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
-		      be16_to_cpu(mask->hdr.dst_port), lport);
+
+	if (val->hdr.src_port || (umask && umask->hdr.src_port))
+		CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
+			      be16_to_cpu(mask->hdr.src_port), fport);
+
+	if (val->hdr.dst_port || (umask && umask->hdr.dst_port))
+		CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
+			      be16_to_cpu(mask->hdr.dst_port), lport);
+
 	return 0;
 }
 
@@ -380,10 +390,15 @@  ch_rte_parsetype_tcp(const void *dmask, const struct rte_flow_item *item,
 	CXGBE_FILL_FS(IPPROTO_TCP, 0xff, proto);
 	if (!val)
 		return 0;
-	CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
-		      be16_to_cpu(mask->hdr.src_port), fport);
-	CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
-		      be16_to_cpu(mask->hdr.dst_port), lport);
+
+	if (val->hdr.src_port || (umask && umask->hdr.src_port))
+		CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
+			      be16_to_cpu(mask->hdr.src_port), fport);
+
+	if (val->hdr.dst_port || (umask && umask->hdr.dst_port))
+		CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
+			      be16_to_cpu(mask->hdr.dst_port), lport);
+
 	return 0;
 }
 
@@ -411,10 +426,21 @@  ch_rte_parsetype_ipv4(const void *dmask, const struct rte_flow_item *item,
 	if (!val)
 		return 0; /* ipv4 wild card */
 
-	CXGBE_FILL_FS(val->hdr.next_proto_id, mask->hdr.next_proto_id, proto);
-	CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
-	CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
-	CXGBE_FILL_FS(val->hdr.type_of_service, mask->hdr.type_of_service, tos);
+	if (val->hdr.next_proto_id || (umask && umask->hdr.next_proto_id))
+		CXGBE_FILL_FS(val->hdr.next_proto_id, mask->hdr.next_proto_id,
+			      proto);
+
+	if (val->hdr.dst_addr || (umask && umask->hdr.dst_addr))
+		CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr,
+				     lip);
+
+	if (val->hdr.src_addr || (umask && umask->hdr.src_addr))
+		CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr,
+				     fip);
+
+	if (val->hdr.type_of_service || (umask && umask->hdr.type_of_service))
+		CXGBE_FILL_FS(val->hdr.type_of_service,
+			      mask->hdr.type_of_service, tos);
 
 	return 0;
 }
@@ -428,6 +454,7 @@  ch_rte_parsetype_ipv6(const void *dmask, const struct rte_flow_item *item,
 	const struct rte_flow_item_ipv6 *umask = item->mask;
 	const struct rte_flow_item_ipv6 *mask;
 	u32 vtc_flow, vtc_flow_mask;
+	u8 z[16] = { 0 };
 
 	mask = umask ? umask : (const struct rte_flow_item_ipv6 *)dmask;
 
@@ -448,17 +475,28 @@  ch_rte_parsetype_ipv6(const void *dmask, const struct rte_flow_item *item,
 	if (!val)
 		return 0; /* ipv6 wild card */
 
-	CXGBE_FILL_FS(val->hdr.proto, mask->hdr.proto, proto);
+	if (val->hdr.proto || (umask && umask->hdr.proto))
+		CXGBE_FILL_FS(val->hdr.proto, mask->hdr.proto, proto);
 
 	vtc_flow = be32_to_cpu(val->hdr.vtc_flow);
-	CXGBE_FILL_FS((vtc_flow & RTE_IPV6_HDR_TC_MASK) >>
-		      RTE_IPV6_HDR_TC_SHIFT,
-		      (vtc_flow_mask & RTE_IPV6_HDR_TC_MASK) >>
-		      RTE_IPV6_HDR_TC_SHIFT,
-		      tos);
-
-	CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
-	CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
+	if (val->hdr.vtc_flow || (umask && umask->hdr.vtc_flow))
+		CXGBE_FILL_FS((vtc_flow & RTE_IPV6_HDR_TC_MASK) >>
+			      RTE_IPV6_HDR_TC_SHIFT,
+			      (vtc_flow_mask & RTE_IPV6_HDR_TC_MASK) >>
+			      RTE_IPV6_HDR_TC_SHIFT,
+			      tos);
+
+	if (memcmp(val->hdr.dst_addr, z, sizeof(val->hdr.dst_addr)) ||
+	    (umask &&
+	     memcmp(umask->hdr.dst_addr, z, sizeof(umask->hdr.dst_addr))))
+		CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr,
+				     lip);
+
+	if (memcmp(val->hdr.src_addr, z, sizeof(val->hdr.src_addr)) ||
+	    (umask &&
+	     memcmp(umask->hdr.src_addr, z, sizeof(umask->hdr.src_addr))))
+		CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr,
+				     fip);
 
 	return 0;
 }
@@ -1051,8 +1089,8 @@  cxgbe_rtef_parse_items(struct rte_flow *flow,
 		}
 	}
 
-	cxgbe_fill_filter_region(adap, &flow->fs);
 	cxgbe_tweak_filter_spec(adap, &flow->fs);
+	cxgbe_fill_filter_region(adap, &flow->fs);
 
 	return 0;
 }
@@ -1310,6 +1348,7 @@  cxgbe_flow_validate(struct rte_eth_dev *dev,
 
 	flow->item_parser = parseitem;
 	flow->dev = dev;
+	flow->fs.private = (void *)flow;
 
 	ret = cxgbe_flow_parse(flow, attr, item, action, e);
 	if (ret) {