#ifndef TCA_CLS_FLAGS_SKIP_SW
#define TCA_CLS_FLAGS_SKIP_SW (1 << 1)
#endif
+#ifndef TCA_CLS_FLAGS_IN_HW
+#define TCA_CLS_FLAGS_IN_HW (1 << 2)
+#endif
#ifndef HAVE_TCA_CHAIN
#define TCA_CHAIN 11
#endif
struct rte_flow_item_tcp tcp;
struct rte_flow_item_udp udp;
struct rte_flow_item_vxlan vxlan;
-} flow_tcf_mask_empty;
+} flow_tcf_mask_empty = {
+ {0},
+};
/** Supported masks for known item types. */
static const struct {
/* Due to a limitation on driver/FW. */
#define MLX5_TCF_GROUP_ID_MAX 3
-#define MLX5_TCF_GROUP_PRIORITY_MAX 14
+
+/*
+ * Due to a limitation on driver/FW, priority ranges from 1 to 16 in kernel.
+ * Priority in rte_flow attribute starts from 0 and is added by 1 in
+ * translation. This is subject to be changed to determine the max priority
+ * based on trial-and-error like Verbs driver once the restriction is lifted or
+ * the range is extended.
+ */
+#define MLX5_TCF_GROUP_PRIORITY_MAX 15
#define MLX5_TCF_FATE_ACTIONS \
(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_PORT_ID | \
"group ID larger than "
RTE_STR(MLX5_TCF_GROUP_ID_MAX)
" isn't supported");
- else if (attr->group > 0 &&
- attr->priority > MLX5_TCF_GROUP_PRIORITY_MAX)
+ else if (attr->priority > MLX5_TCF_GROUP_PRIORITY_MAX)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
attr,
- "lowest priority level is "
+ "priority more than "
RTE_STR(MLX5_TCF_GROUP_PRIORITY_MAX)
- " when group is configured");
- else if (attr->priority > 0xfffe)
- return rte_flow_error_set(error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
- attr,
- "lowest priority level is 0xfffe");
+ " is not supported");
if (!attr->ingress)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
}
/**
- * Validate RTE_FLOW_ITEM_TYPE_IPV4 item if VXLAN_DECAP action
- * is present in actions list.
- *
- * @param[in] ipv4
- * Outer IPv4 address item (if any, NULL otherwise).
- * @param[out] error
- * Pointer to the error structure.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_ernno is set.
- **/
-static int
-flow_tcf_validate_vxlan_decap_ipv4(const struct rte_flow_item *ipv4,
- struct rte_flow_error *error)
-{
- const struct rte_flow_item_ipv4 *spec = ipv4->spec;
- const struct rte_flow_item_ipv4 *mask = ipv4->mask;
-
- if (!spec) {
- /*
- * Specification for IP addresses cannot be empty
- * because it is required as decap parameter.
- */
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ITEM, ipv4,
- "NULL outer ipv4 address"
- " specification for vxlan"
- " for vxlan decapsulation");
- }
- if (!mask)
- mask = &rte_flow_item_ipv4_mask;
- if (mask->hdr.dst_addr != RTE_BE32(0x00000000)) {
- if (mask->hdr.dst_addr != RTE_BE32(0xffffffff))
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
- "no support for partial mask on"
- " \"ipv4.hdr.dst_addr\" field");
- /* More IP address validations can be put here. */
- } else {
- /*
- * Kernel uses the destination IP address
- * to determine the ingress network interface
- * for traffic being decapsulated.
- */
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ITEM, ipv4,
- "outer ipv4 destination address"
- " must be specified for"
- " vxlan decapsulation");
- }
- /* Source IP address is optional for decap. */
- if (mask->hdr.src_addr != RTE_BE32(0x00000000) &&
- mask->hdr.src_addr != RTE_BE32(0xffffffff))
- return rte_flow_error_set(error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
- "no support for partial mask on"
- " \"ipv4.hdr.src_addr\" field");
- return 0;
-}
-
-/**
- * Validate RTE_FLOW_ITEM_TYPE_IPV6 item if VXLAN_DECAP action
- * is present in actions list.
- *
- * @param[in] ipv6
- * Outer IPv6 address item (if any, NULL otherwise).
- * @param[out] error
- * Pointer to the error structure.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_ernno is set.
- **/
-static int
-flow_tcf_validate_vxlan_decap_ipv6(const struct rte_flow_item *ipv6,
- struct rte_flow_error *error)
-{
- const struct rte_flow_item_ipv6 *spec = ipv6->spec;
- const struct rte_flow_item_ipv6 *mask = ipv6->mask;
-
- if (!spec) {
- /*
- * Specification for IP addresses cannot be empty
- * because it is required as decap parameter.
- */
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ITEM, ipv6,
- "NULL outer ipv6 address"
- " specification for vxlan"
- " decapsulation");
- }
- if (!mask)
- mask = &rte_flow_item_ipv6_mask;
- if (memcmp(&mask->hdr.dst_addr,
- &flow_tcf_mask_empty.ipv6.hdr.dst_addr,
- IPV6_ADDR_LEN)) {
- if (memcmp(&mask->hdr.dst_addr,
- &rte_flow_item_ipv6_mask.hdr.dst_addr,
- IPV6_ADDR_LEN))
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
- "no support for partial mask on"
- " \"ipv6.hdr.dst_addr\" field");
- /* More IP address validations can be put here. */
- } else {
- /*
- * Kernel uses the destination IP address
- * to determine the ingress network interface
- * for traffic being decapsulated.
- */
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ITEM, ipv6,
- "outer ipv6 destination address must be "
- "specified for vxlan decapsulation");
- }
- /* Source IP address is optional for decap. */
- if (memcmp(&mask->hdr.src_addr,
- &flow_tcf_mask_empty.ipv6.hdr.src_addr,
- IPV6_ADDR_LEN)) {
- if (memcmp(&mask->hdr.src_addr,
- &rte_flow_item_ipv6_mask.hdr.src_addr,
- IPV6_ADDR_LEN))
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
- "no support for partial mask on"
- " \"ipv6.hdr.src_addr\" field");
- }
- return 0;
-}
-
-/**
- * Validate RTE_FLOW_ITEM_TYPE_UDP item if VXLAN_DECAP action
- * is present in actions list.
+ * Validate outer RTE_FLOW_ITEM_TYPE_UDP item if tunnel item
+ * RTE_FLOW_ITEM_TYPE_VXLAN is present in item list.
*
* @param[in] udp
* Outer UDP layer item (if any, NULL otherwise).
* Pointer to the error structure.
*
* @return
- * 0 on success, a negative errno value otherwise and rte_ernno is set.
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
**/
static int
flow_tcf_validate_vxlan_decap_udp(const struct rte_flow_item *udp,
const struct rte_flow_action_set_ipv4 *set_ipv4;
const struct rte_flow_action_set_ipv6 *set_ipv6;
} conf;
+ const struct rte_flow_item *outer_udp = NULL;
+ rte_be16_t inner_etype = RTE_BE16(ETH_P_ALL);
+ rte_be16_t outer_etype = RTE_BE16(ETH_P_ALL);
+ rte_be16_t vlan_etype = RTE_BE16(ETH_P_ALL);
uint64_t item_flags = 0;
uint64_t action_flags = 0;
- uint8_t next_protocol = -1;
+ uint8_t next_protocol = 0xff;
unsigned int tcm_ifindex = 0;
uint8_t pedit_validated = 0;
struct flow_tcf_ptoi ptoi[PTOI_TABLE_SZ_MAX(dev)];
case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
current_action_flag = MLX5_FLOW_ACTION_OF_POP_VLAN;
break;
- case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
+ case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN: {
+ rte_be16_t ethertype;
+
current_action_flag = MLX5_FLOW_ACTION_OF_PUSH_VLAN;
+ if (!actions->conf)
+ break;
+ conf.of_push_vlan = actions->conf;
+ ethertype = conf.of_push_vlan->ethertype;
+ if (ethertype != RTE_BE16(ETH_P_8021Q) &&
+ ethertype != RTE_BE16(ETH_P_8021AD))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, actions,
+ "vlan push TPID must be "
+ "802.1Q or 802.1AD");
break;
+ }
case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
if (!(action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN))
return rte_flow_error_set
for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
unsigned int i;
- if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
- items->type != RTE_FLOW_ITEM_TYPE_ETH)
- return rte_flow_error_set(error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM,
- items,
- "only L2 inner item"
- " is supported");
switch (items->type) {
case RTE_FLOW_ITEM_TYPE_VOID:
break;
case RTE_FLOW_ITEM_TYPE_PORT_ID:
+ if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
+ return rte_flow_error_set
+ (error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, items,
+ "inner tunnel port id"
+ " item is not supported");
mask.port_id = flow_tcf_item_mask
(items, &rte_flow_item_port_id_mask,
&flow_tcf_mask_supported.port_id,
if (ret < 0)
return ret;
item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
- MLX5_FLOW_LAYER_INNER_L2 :
- MLX5_FLOW_LAYER_OUTER_L2;
+ MLX5_FLOW_LAYER_INNER_L2 :
+ MLX5_FLOW_LAYER_OUTER_L2;
/* TODO:
* Redundant check due to different supported mask.
* Same for the rest of items.
mask.eth,
"no support for partial mask on"
" \"type\" field");
+ assert(items->spec);
+ spec.eth = items->spec;
+ if (mask.eth->type &&
+ (item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
+ inner_etype != RTE_BE16(ETH_P_ALL) &&
+ inner_etype != spec.eth->type)
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "inner eth_type conflict");
+ if (mask.eth->type &&
+ !(item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
+ outer_etype != RTE_BE16(ETH_P_ALL) &&
+ outer_etype != spec.eth->type)
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "outer eth_type conflict");
+ if (mask.eth->type) {
+ if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
+ inner_etype = spec.eth->type;
+ else
+ outer_etype = spec.eth->type;
+ }
break;
case RTE_FLOW_ITEM_TYPE_VLAN:
+ if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
+ return rte_flow_error_set
+ (error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, items,
+ "inner tunnel VLAN"
+ " is not supported");
ret = mlx5_flow_validate_item_vlan(items, item_flags,
error);
if (ret < 0)
"no support for partial masks on"
" \"tci\" (PCP and VID parts) and"
" \"inner_type\" fields");
+ if (outer_etype != RTE_BE16(ETH_P_ALL) &&
+ outer_etype != RTE_BE16(ETH_P_8021Q))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "outer eth_type conflict,"
+ " must be 802.1Q");
+ outer_etype = RTE_BE16(ETH_P_8021Q);
+ assert(items->spec);
+ spec.vlan = items->spec;
+ if (mask.vlan->inner_type &&
+ vlan_etype != RTE_BE16(ETH_P_ALL) &&
+ vlan_etype != spec.vlan->inner_type)
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "vlan eth_type conflict");
+ if (mask.vlan->inner_type)
+ vlan_etype = spec.vlan->inner_type;
break;
case RTE_FLOW_ITEM_TYPE_IPV4:
ret = mlx5_flow_validate_item_ipv4(items, item_flags,
error);
if (ret < 0)
return ret;
- item_flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L3_IPV4 :
+ MLX5_FLOW_LAYER_OUTER_L3_IPV4;
mask.ipv4 = flow_tcf_item_mask
(items, &rte_flow_item_ipv4_mask,
&flow_tcf_mask_supported.ipv4,
next_protocol =
((const struct rte_flow_item_ipv4 *)
(items->spec))->hdr.next_proto_id;
- if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
- ret = flow_tcf_validate_vxlan_decap_ipv4
- (items, error);
- if (ret < 0)
- return ret;
+ if (item_flags & MLX5_FLOW_LAYER_TUNNEL) {
+ if (inner_etype != RTE_BE16(ETH_P_ALL) &&
+ inner_etype != RTE_BE16(ETH_P_IP))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "inner eth_type conflict,"
+ " IPv4 is required");
+ inner_etype = RTE_BE16(ETH_P_IP);
+ } else if (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN) {
+ if (vlan_etype != RTE_BE16(ETH_P_ALL) &&
+ vlan_etype != RTE_BE16(ETH_P_IP))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "vlan eth_type conflict,"
+ " IPv4 is required");
+ vlan_etype = RTE_BE16(ETH_P_IP);
+ } else {
+ if (outer_etype != RTE_BE16(ETH_P_ALL) &&
+ outer_etype != RTE_BE16(ETH_P_IP))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "eth_type conflict,"
+ " IPv4 is required");
+ outer_etype = RTE_BE16(ETH_P_IP);
}
break;
case RTE_FLOW_ITEM_TYPE_IPV6:
error);
if (ret < 0)
return ret;
- item_flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L3_IPV6 :
+ MLX5_FLOW_LAYER_OUTER_L3_IPV6;
mask.ipv6 = flow_tcf_item_mask
(items, &rte_flow_item_ipv6_mask,
&flow_tcf_mask_supported.ipv6,
next_protocol =
((const struct rte_flow_item_ipv6 *)
(items->spec))->hdr.proto;
- if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
- ret = flow_tcf_validate_vxlan_decap_ipv6
- (items, error);
- if (ret < 0)
- return ret;
+ if (item_flags & MLX5_FLOW_LAYER_TUNNEL) {
+ if (inner_etype != RTE_BE16(ETH_P_ALL) &&
+ inner_etype != RTE_BE16(ETH_P_IPV6))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "inner eth_type conflict,"
+ " IPv6 is required");
+ inner_etype = RTE_BE16(ETH_P_IPV6);
+ } else if (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN) {
+ if (vlan_etype != RTE_BE16(ETH_P_ALL) &&
+ vlan_etype != RTE_BE16(ETH_P_IPV6))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "vlan eth_type conflict,"
+ " IPv6 is required");
+ vlan_etype = RTE_BE16(ETH_P_IPV6);
+ } else {
+ if (outer_etype != RTE_BE16(ETH_P_ALL) &&
+ outer_etype != RTE_BE16(ETH_P_IPV6))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "eth_type conflict,"
+ " IPv6 is required");
+ outer_etype = RTE_BE16(ETH_P_IPV6);
}
break;
case RTE_FLOW_ITEM_TYPE_UDP:
next_protocol, error);
if (ret < 0)
return ret;
- item_flags |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L4_UDP :
+ MLX5_FLOW_LAYER_OUTER_L4_UDP;
mask.udp = flow_tcf_item_mask
(items, &rte_flow_item_udp_mask,
&flow_tcf_mask_supported.udp,
error);
if (!mask.udp)
return -rte_errno;
- if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
- ret = flow_tcf_validate_vxlan_decap_udp
- (items, error);
- if (ret < 0)
- return ret;
- }
+ /*
+ * Save the presumed outer UDP item for extra check
+ * if the tunnel item will be found later in the list.
+ */
+ if (!(item_flags & MLX5_FLOW_LAYER_TUNNEL))
+ outer_udp = items;
break;
case RTE_FLOW_ITEM_TYPE_TCP:
ret = mlx5_flow_validate_item_tcp
error);
if (ret < 0)
return ret;
- item_flags |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L4_TCP :
+ MLX5_FLOW_LAYER_OUTER_L4_TCP;
mask.tcp = flow_tcf_item_mask
(items, &rte_flow_item_tcp_mask,
&flow_tcf_mask_supported.tcp,
return -rte_errno;
break;
case RTE_FLOW_ITEM_TYPE_VXLAN:
- if (!(action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP))
+ if (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)
return rte_flow_error_set
(error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ITEM,
- items,
- "vni pattern should be followed by"
- " vxlan decapsulation action");
+ RTE_FLOW_ERROR_TYPE_ITEM, items,
+ "vxlan tunnel over vlan"
+ " is not supported");
ret = mlx5_flow_validate_item_vxlan(items,
item_flags, error);
if (ret < 0)
mask.vxlan,
"no support for partial or "
"empty mask on \"vxlan.vni\" field");
+ /*
+ * The VNI item assumes the VXLAN tunnel, it requires
+ * at least the outer destination UDP port must be
+ * specified without wildcards to allow kernel select
+ * the virtual VXLAN device by port. Also outer IPv4
+ * or IPv6 item must be specified (wilcards or even
+ * zero mask are allowed) to let driver know the tunnel
+ * IP version and process UDP traffic correctly.
+ */
+ if (!(item_flags &
+ (MLX5_FLOW_LAYER_OUTER_L3_IPV4 |
+ MLX5_FLOW_LAYER_OUTER_L3_IPV6)))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "no outer IP pattern found"
+ " for vxlan tunnel");
+ if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
+ return rte_flow_error_set
+ (error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "no outer UDP pattern found"
+ " for vxlan tunnel");
+ /*
+ * All items preceding the tunnel item become outer
+ * ones and we should do extra validation for them
+ * due to tc limitations for tunnel outer parameters.
+ * Currently only outer UDP item requres extra check,
+ * use the saved pointer instead of item list rescan.
+ */
+ assert(outer_udp);
+ ret = flow_tcf_validate_vxlan_decap_udp
+ (outer_udp, error);
+ if (ret < 0)
+ return ret;
+ /* Reset L4 protocol for inner parameters. */
+ next_protocol = 0xff;
break;
default:
return rte_flow_error_set(error, ENOTSUP,
"no ethernet found in"
" pattern");
}
- if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
- if (!(item_flags &
- (MLX5_FLOW_LAYER_OUTER_L3_IPV4 |
- MLX5_FLOW_LAYER_OUTER_L3_IPV6)))
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ACTION,
- NULL,
- "no outer IP pattern found"
- " for vxlan decap action");
- if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ACTION,
- NULL,
- "no outer UDP pattern found"
- " for vxlan decap action");
- if (!(item_flags & MLX5_FLOW_LAYER_VXLAN))
- return rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ACTION,
- NULL,
- "no VNI pattern found"
- " for vxlan decap action");
- }
+ if ((action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) &&
+ !(item_flags & MLX5_FLOW_LAYER_VXLAN))
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "no VNI pattern found"
+ " for vxlan decap action");
+ if ((action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP) &&
+ (item_flags & MLX5_FLOW_LAYER_TUNNEL))
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "vxlan encap not supported"
+ " for tunneled traffic");
return 0;
}
/**
- * Calculate maximum size of memory for flow items of Linux TC flower and
- * extract specified items.
+ * Calculate maximum size of memory for flow items of Linux TC flower.
*
+ * @param[in] attr
+ * Pointer to the flow attributes.
* @param[in] items
* Pointer to the list of items.
- * @param[out] item_flags
- * Pointer to the detected items.
+ * @param[out] action_flags
+ * Pointer to the detected actions.
*
* @return
* Maximum size of memory for items.
*/
static int
-flow_tcf_get_items_and_size(const struct rte_flow_attr *attr,
- const struct rte_flow_item items[],
- uint64_t *item_flags)
+flow_tcf_get_items_size(const struct rte_flow_attr *attr,
+ const struct rte_flow_item items[],
+ uint64_t *action_flags)
{
int size = 0;
- uint64_t flags = 0;
size += SZ_NLATTR_STRZ_OF("flower") +
SZ_NLATTR_NEST + /* TCA_OPTIONS. */
size += SZ_NLATTR_TYPE_OF(uint16_t) + /* Ether type. */
SZ_NLATTR_DATA_OF(ETHER_ADDR_LEN) * 4;
/* dst/src MAC addr and mask. */
- flags |= MLX5_FLOW_LAYER_OUTER_L2;
break;
case RTE_FLOW_ITEM_TYPE_VLAN:
size += SZ_NLATTR_TYPE_OF(uint16_t) + /* Ether type. */
/* VLAN Ether type. */
SZ_NLATTR_TYPE_OF(uint8_t) + /* VLAN prio. */
SZ_NLATTR_TYPE_OF(uint16_t); /* VLAN ID. */
- flags |= MLX5_FLOW_LAYER_OUTER_VLAN;
break;
case RTE_FLOW_ITEM_TYPE_IPV4:
size += SZ_NLATTR_TYPE_OF(uint16_t) + /* Ether type. */
SZ_NLATTR_TYPE_OF(uint8_t) + /* IP proto. */
SZ_NLATTR_TYPE_OF(uint32_t) * 4;
/* dst/src IP addr and mask. */
- flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
break;
case RTE_FLOW_ITEM_TYPE_IPV6:
size += SZ_NLATTR_TYPE_OF(uint16_t) + /* Ether type. */
SZ_NLATTR_TYPE_OF(uint8_t) + /* IP proto. */
SZ_NLATTR_DATA_OF(IPV6_ADDR_LEN) * 4;
/* dst/src IP addr and mask. */
- flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
break;
case RTE_FLOW_ITEM_TYPE_UDP:
size += SZ_NLATTR_TYPE_OF(uint8_t) + /* IP proto. */
SZ_NLATTR_TYPE_OF(uint16_t) * 4;
/* dst/src port and mask. */
- flags |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
break;
case RTE_FLOW_ITEM_TYPE_TCP:
size += SZ_NLATTR_TYPE_OF(uint8_t) + /* IP proto. */
SZ_NLATTR_TYPE_OF(uint16_t) * 4;
/* dst/src port and mask. */
- flags |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
break;
case RTE_FLOW_ITEM_TYPE_VXLAN:
size += SZ_NLATTR_TYPE_OF(uint32_t);
- flags |= MLX5_FLOW_LAYER_VXLAN;
+ /*
+ * There might be no VXLAN decap action in the action
+ * list, nonetheless the VXLAN tunnel flow requires
+ * the decap structure to be correctly applied to
+ * VXLAN device, set the flag to create the structure.
+ * Translation routine will not put the decap action
+ * in tne Netlink message if there is no actual action
+ * in the list.
+ */
+ *action_flags |= MLX5_FLOW_ACTION_VXLAN_DECAP;
break;
default:
DRV_LOG(WARNING,
break;
}
}
- *item_flags = flags;
return size;
}
* Pointer to the list of items.
* @param[in] actions
* Pointer to the list of actions.
- * @param[out] item_flags
- * Pointer to bit mask of all items detected.
- * @param[out] action_flags
- * Pointer to bit mask of all actions detected.
* @param[out] error
* Pointer to the error structure.
*
flow_tcf_prepare(const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
- uint64_t *item_flags, uint64_t *action_flags,
struct rte_flow_error *error)
{
size_t size = RTE_ALIGN_CEIL
MNL_ALIGN(sizeof(struct nlmsghdr)) +
MNL_ALIGN(sizeof(struct tcmsg));
struct mlx5_flow *dev_flow;
+ uint64_t action_flags = 0;
struct nlmsghdr *nlh;
struct tcmsg *tcm;
uint8_t *sp, *tun = NULL;
- size += flow_tcf_get_items_and_size(attr, items, item_flags);
- size += flow_tcf_get_actions_and_size(actions, action_flags);
+ size += flow_tcf_get_items_size(attr, items, &action_flags);
+ size += flow_tcf_get_actions_and_size(actions, &action_flags);
dev_flow = rte_zmalloc(__func__, size, MNL_ALIGNTO);
if (!dev_flow) {
rte_flow_error_set(error, ENOMEM,
return NULL;
}
sp = (uint8_t *)(dev_flow + 1);
- if (*action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP) {
+ if (action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP) {
sp = RTE_PTR_ALIGN
(sp, alignof(struct flow_tcf_tunnel_hdr));
tun = sp;
(sizeof(struct flow_tcf_vxlan_encap),
MNL_ALIGNTO);
#endif
- } else if (*action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
+ } else if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP) {
sp = RTE_PTR_ALIGN
(sp, alignof(struct flow_tcf_tunnel_hdr));
tun = sp;
.tcm = tcm,
},
};
- if (*action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP)
+ if (action_flags & MLX5_FLOW_ACTION_VXLAN_DECAP)
dev_flow->tcf.tunnel->type = FLOW_TCF_TUNACT_VXLAN_DECAP;
- else if (*action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP)
+ else if (action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP)
dev_flow->tcf.tunnel->type = FLOW_TCF_TUNACT_VXLAN_ENCAP;
/*
* Generate a reasonably unique handle based on the address of the
bool vlan_present = 0;
bool vlan_eth_type_set = 0;
bool ip_proto_set = 0;
+ bool tunnel_outer = 0;
struct nlattr *na_flower;
struct nlattr *na_flower_act;
struct nlattr *na_vlan_id = NULL;
switch (dev_flow->tcf.tunnel->type) {
case FLOW_TCF_TUNACT_VXLAN_DECAP:
decap.vxlan = dev_flow->tcf.vxlan_decap;
+ tunnel_outer = 1;
break;
case FLOW_TCF_TUNACT_VXLAN_ENCAP:
encap.vxlan = dev_flow->tcf.vxlan_encap;
tcm->tcm_ifindex = ptoi[i].ifindex;
break;
case RTE_FLOW_ITEM_TYPE_ETH:
- item_flags |= (item_flags & MLX5_FLOW_LAYER_VXLAN) ?
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
MLX5_FLOW_LAYER_INNER_L2 :
MLX5_FLOW_LAYER_OUTER_L2;
mask.eth = flow_tcf_item_mask
if (mask.eth == &flow_tcf_mask_empty.eth)
break;
spec.eth = items->spec;
- if (decap.vxlan &&
- !(item_flags & MLX5_FLOW_LAYER_VXLAN)) {
+ if (tunnel_outer) {
DRV_LOG(WARNING,
- "outer L2 addresses cannot be forced"
- " for vxlan decapsulation, parameter"
- " ignored");
+ "outer L2 addresses cannot be"
+ " forced is outer ones for tunnel,"
+ " parameter is ignored");
break;
}
if (mask.eth->type) {
case RTE_FLOW_ITEM_TYPE_VLAN:
assert(!encap.hdr);
assert(!decap.hdr);
+ assert(!tunnel_outer);
item_flags |= MLX5_FLOW_LAYER_OUTER_VLAN;
mask.vlan = flow_tcf_item_mask
(items, &rte_flow_item_vlan_mask,
assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
break;
case RTE_FLOW_ITEM_TYPE_IPV4:
- item_flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L3_IPV4 :
+ MLX5_FLOW_LAYER_OUTER_L3_IPV4;
mask.ipv4 = flow_tcf_item_mask
(items, &rte_flow_item_ipv4_mask,
&flow_tcf_mask_supported.ipv4,
error);
assert(mask.ipv4);
spec.ipv4 = items->spec;
- if (!decap.vxlan) {
- if (!eth_type_set && !vlan_eth_type_set)
+ if (!tunnel_outer) {
+ if (!eth_type_set ||
+ (!vlan_eth_type_set && vlan_present))
mnl_attr_put_u16
(nlh,
vlan_present ?
RTE_BE16(ETH_P_IP));
eth_type_set = 1;
vlan_eth_type_set = 1;
- if (mask.ipv4 == &flow_tcf_mask_empty.ipv4)
+ }
+ if (!tunnel_outer && mask.ipv4->hdr.next_proto_id) {
+ /*
+ * No way to set IP protocol for outer tunnel
+ * layers. Usually it is fixed, for example,
+ * to UDP for VXLAN/GPE.
+ */
+ assert(spec.ipv4); /* Mask is not empty. */
+ mnl_attr_put_u8(nlh, TCA_FLOWER_KEY_IP_PROTO,
+ spec.ipv4->hdr.next_proto_id);
+ ip_proto_set = 1;
+ }
+ if (mask.ipv4 == &flow_tcf_mask_empty.ipv4 ||
+ (!mask.ipv4->hdr.src_addr &&
+ !mask.ipv4->hdr.dst_addr)) {
+ if (!tunnel_outer)
break;
- if (mask.ipv4->hdr.next_proto_id) {
- mnl_attr_put_u8
- (nlh, TCA_FLOWER_KEY_IP_PROTO,
- spec.ipv4->hdr.next_proto_id);
- ip_proto_set = 1;
- }
- } else {
- assert(mask.ipv4 != &flow_tcf_mask_empty.ipv4);
+ /*
+ * For tunnel outer we must set outer IP key
+ * anyway, even if the specification/mask is
+ * empty. There is no another way to tell
+ * kernel about he outer layer protocol.
+ */
+ mnl_attr_put_u32
+ (nlh, TCA_FLOWER_KEY_ENC_IPV4_SRC,
+ mask.ipv4->hdr.src_addr);
+ mnl_attr_put_u32
+ (nlh, TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
+ mask.ipv4->hdr.src_addr);
+ assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
+ break;
}
if (mask.ipv4->hdr.src_addr) {
mnl_attr_put_u32
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV4_SRC :
TCA_FLOWER_KEY_IPV4_SRC,
spec.ipv4->hdr.src_addr);
mnl_attr_put_u32
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK :
TCA_FLOWER_KEY_IPV4_SRC_MASK,
mask.ipv4->hdr.src_addr);
}
if (mask.ipv4->hdr.dst_addr) {
mnl_attr_put_u32
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV4_DST :
TCA_FLOWER_KEY_IPV4_DST,
spec.ipv4->hdr.dst_addr);
mnl_attr_put_u32
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV4_DST_MASK :
TCA_FLOWER_KEY_IPV4_DST_MASK,
mask.ipv4->hdr.dst_addr);
}
assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
break;
- case RTE_FLOW_ITEM_TYPE_IPV6:
- item_flags |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
+ case RTE_FLOW_ITEM_TYPE_IPV6: {
+ bool ipv6_src, ipv6_dst;
+
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L3_IPV6 :
+ MLX5_FLOW_LAYER_OUTER_L3_IPV6;
mask.ipv6 = flow_tcf_item_mask
(items, &rte_flow_item_ipv6_mask,
&flow_tcf_mask_supported.ipv6,
error);
assert(mask.ipv6);
spec.ipv6 = items->spec;
- if (!decap.vxlan) {
- if (!eth_type_set || !vlan_eth_type_set) {
+ if (!tunnel_outer) {
+ if (!eth_type_set ||
+ (!vlan_eth_type_set && vlan_present))
mnl_attr_put_u16
(nlh,
vlan_present ?
TCA_FLOWER_KEY_VLAN_ETH_TYPE :
TCA_FLOWER_KEY_ETH_TYPE,
RTE_BE16(ETH_P_IPV6));
- }
eth_type_set = 1;
vlan_eth_type_set = 1;
- if (mask.ipv6 == &flow_tcf_mask_empty.ipv6)
+ }
+ if (!tunnel_outer && mask.ipv6->hdr.proto) {
+ /*
+ * No way to set IP protocol for outer tunnel
+ * layers. Usually it is fixed, for example,
+ * to UDP for VXLAN/GPE.
+ */
+ assert(spec.ipv6); /* Mask is not empty. */
+ mnl_attr_put_u8(nlh, TCA_FLOWER_KEY_IP_PROTO,
+ spec.ipv6->hdr.proto);
+ ip_proto_set = 1;
+ }
+ ipv6_dst = !IN6_IS_ADDR_UNSPECIFIED
+ (mask.ipv6->hdr.dst_addr);
+ ipv6_src = !IN6_IS_ADDR_UNSPECIFIED
+ (mask.ipv6->hdr.src_addr);
+ if (mask.ipv6 == &flow_tcf_mask_empty.ipv6 ||
+ (!ipv6_dst && !ipv6_src)) {
+ if (!tunnel_outer)
break;
- if (mask.ipv6->hdr.proto) {
- mnl_attr_put_u8
- (nlh, TCA_FLOWER_KEY_IP_PROTO,
- spec.ipv6->hdr.proto);
- ip_proto_set = 1;
- }
- } else {
- assert(mask.ipv6 != &flow_tcf_mask_empty.ipv6);
+ /*
+ * For tunnel outer we must set outer IP key
+ * anyway, even if the specification/mask is
+ * empty. There is no another way to tell
+ * kernel about he outer layer protocol.
+ */
+ mnl_attr_put(nlh,
+ TCA_FLOWER_KEY_ENC_IPV6_SRC,
+ IPV6_ADDR_LEN,
+ mask.ipv6->hdr.src_addr);
+ mnl_attr_put(nlh,
+ TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
+ IPV6_ADDR_LEN,
+ mask.ipv6->hdr.src_addr);
+ assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
+ break;
}
- if (!IN6_IS_ADDR_UNSPECIFIED(mask.ipv6->hdr.src_addr)) {
- mnl_attr_put(nlh, decap.vxlan ?
+ if (ipv6_src) {
+ mnl_attr_put(nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV6_SRC :
TCA_FLOWER_KEY_IPV6_SRC,
IPV6_ADDR_LEN,
spec.ipv6->hdr.src_addr);
- mnl_attr_put(nlh, decap.vxlan ?
+ mnl_attr_put(nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK :
TCA_FLOWER_KEY_IPV6_SRC_MASK,
IPV6_ADDR_LEN,
mask.ipv6->hdr.src_addr);
}
- if (!IN6_IS_ADDR_UNSPECIFIED(mask.ipv6->hdr.dst_addr)) {
- mnl_attr_put(nlh, decap.vxlan ?
+ if (ipv6_dst) {
+ mnl_attr_put(nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV6_DST :
TCA_FLOWER_KEY_IPV6_DST,
IPV6_ADDR_LEN,
spec.ipv6->hdr.dst_addr);
- mnl_attr_put(nlh, decap.vxlan ?
+ mnl_attr_put(nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_IPV6_DST_MASK :
TCA_FLOWER_KEY_IPV6_DST_MASK,
IPV6_ADDR_LEN,
}
assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
break;
+ }
case RTE_FLOW_ITEM_TYPE_UDP:
- item_flags |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L4_UDP :
+ MLX5_FLOW_LAYER_OUTER_L4_UDP;
mask.udp = flow_tcf_item_mask
(items, &rte_flow_item_udp_mask,
&flow_tcf_mask_supported.udp,
error);
assert(mask.udp);
spec.udp = items->spec;
- if (!decap.vxlan) {
+ if (!tunnel_outer) {
if (!ip_proto_set)
mnl_attr_put_u8
(nlh, TCA_FLOWER_KEY_IP_PROTO,
}
if (mask.udp->hdr.src_port) {
mnl_attr_put_u16
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT :
TCA_FLOWER_KEY_UDP_SRC,
spec.udp->hdr.src_port);
mnl_attr_put_u16
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK :
TCA_FLOWER_KEY_UDP_SRC_MASK,
mask.udp->hdr.src_port);
}
if (mask.udp->hdr.dst_port) {
mnl_attr_put_u16
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_UDP_DST_PORT :
TCA_FLOWER_KEY_UDP_DST,
spec.udp->hdr.dst_port);
mnl_attr_put_u16
- (nlh, decap.vxlan ?
+ (nlh, tunnel_outer ?
TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK :
TCA_FLOWER_KEY_UDP_DST_MASK,
mask.udp->hdr.dst_port);
assert(dev_flow->tcf.nlsize >= nlh->nlmsg_len);
break;
case RTE_FLOW_ITEM_TYPE_TCP:
- item_flags |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
+ item_flags |= (item_flags & MLX5_FLOW_LAYER_TUNNEL) ?
+ MLX5_FLOW_LAYER_INNER_L4_TCP :
+ MLX5_FLOW_LAYER_OUTER_L4_TCP;
mask.tcp = flow_tcf_item_mask
(items, &rte_flow_item_tcp_mask,
&flow_tcf_mask_supported.tcp,
break;
case RTE_FLOW_ITEM_TYPE_VXLAN:
assert(decap.vxlan);
+ tunnel_outer = 0;
item_flags |= MLX5_FLOW_LAYER_VXLAN;
spec.vxlan = items->spec;
mnl_attr_put_u32(nlh,
assert(na_flower);
assert(na_flower_act);
mnl_attr_nest_end(nlh, na_flower_act);
+ dev_flow->tcf.ptc_flags = mnl_attr_get_payload
+ (mnl_nlmsg_get_payload_tail(nlh));
mnl_attr_put_u32(nlh, TCA_FLOWER_FLAGS, decap.vxlan ?
0 : TCA_CLS_FLAGS_SKIP_SW);
mnl_attr_nest_end(nlh, na_flower);
* @param nlh
* Message to send. This function always raises the NLM_F_ACK flag before
* sending.
- * @param[in] msglen
- * Message length. Message buffer may contain multiple commands and
- * nlmsg_len field not always corresponds to actual message length.
- * If 0 specified the nlmsg_len field in header is used as message length.
* @param[in] cb
* Callback handler for received message.
* @param[in] arg
static int
flow_tcf_nl_ack(struct mlx5_flow_tcf_context *tcf,
struct nlmsghdr *nlh,
- uint32_t msglen,
mnl_cb_t cb, void *arg)
{
unsigned int portid = mnl_socket_get_portid(tcf->nl);
uint32_t seq = tcf->seq++;
- int err, ret;
+ int ret, err = 0;
assert(tcf->nl);
assert(tcf->buf);
- if (!seq)
+ if (!seq) {
/* seq 0 is reserved for kernel event-driven notifications. */
seq = tcf->seq++;
+ }
nlh->nlmsg_seq = seq;
- if (!msglen) {
- msglen = nlh->nlmsg_len;
- nlh->nlmsg_flags |= NLM_F_ACK;
+ nlh->nlmsg_flags |= NLM_F_ACK;
+ ret = mnl_socket_sendto(tcf->nl, nlh, nlh->nlmsg_len);
+ if (ret <= 0) {
+ /* Message send error occurres. */
+ rte_errno = errno;
+ return -rte_errno;
}
- ret = mnl_socket_sendto(tcf->nl, nlh, msglen);
- err = (ret <= 0) ? errno : 0;
nlh = (struct nlmsghdr *)(tcf->buf);
/*
* The following loop postpones non-fatal errors until multipart
* messages are complete.
*/
- if (ret > 0)
- while (true) {
- ret = mnl_socket_recvfrom(tcf->nl, tcf->buf,
- tcf->buf_size);
+ while (true) {
+ ret = mnl_socket_recvfrom(tcf->nl, tcf->buf, tcf->buf_size);
+ if (ret < 0) {
+ err = errno;
+ /*
+ * In case of overflow Will receive till
+ * end of multipart message. We may lost part
+ * of reply messages but mark and return an error.
+ */
+ if (err != ENOSPC ||
+ !(nlh->nlmsg_flags & NLM_F_MULTI) ||
+ nlh->nlmsg_type == NLMSG_DONE)
+ break;
+ } else {
+ ret = mnl_cb_run(nlh, ret, seq, portid, cb, arg);
+ if (!ret) {
+ /*
+ * libmnl returns 0 if DONE or
+ * success ACK message found.
+ */
+ break;
+ }
if (ret < 0) {
+ /*
+ * ACK message with error found
+ * or some error occurred.
+ */
err = errno;
- if (err != ENOSPC)
- break;
- }
- if (!err) {
- ret = mnl_cb_run(nlh, ret, seq, portid,
- cb, arg);
- if (ret < 0) {
- err = errno;
- break;
- }
- }
- /* Will receive till end of multipart message */
- if (!(nlh->nlmsg_flags & NLM_F_MULTI) ||
- nlh->nlmsg_type == NLMSG_DONE)
break;
+ }
+ /* We should continue receiving. */
}
+ }
if (!err)
return 0;
rte_errno = err;
#define MNL_REQUEST_SIZE RTE_MIN(RTE_MAX(sysconf(_SC_PAGESIZE), \
MNL_REQUEST_SIZE_MIN), MNL_REQUEST_SIZE_MAX)
-/* VTEP device list is shared between PMD port instances. */
-static LIST_HEAD(, tcf_vtep) vtep_list_vxlan = LIST_HEAD_INITIALIZER();
-static pthread_mutex_t vtep_list_mutex = PTHREAD_MUTEX_INITIALIZER;
+/* Data structures used by flow_tcf_xxx_cb() routines. */
+struct tcf_nlcb_buf {
+ LIST_ENTRY(tcf_nlcb_buf) next;
+ uint32_t size;
+ alignas(struct nlmsghdr)
+ uint8_t msg[]; /**< Netlink message data. */
+};
+
+struct tcf_nlcb_context {
+ unsigned int ifindex; /**< Base interface index. */
+ uint32_t bufsize;
+ LIST_HEAD(, tcf_nlcb_buf) nlbuf;
+};
+
+/**
+ * Allocate space for netlink command in buffer list
+ *
+ * @param[in, out] ctx
+ * Pointer to callback context with command buffers list.
+ * @param[in] size
+ * Required size of data buffer to be allocated.
+ *
+ * @return
+ * Pointer to allocated memory, aligned as message header.
+ * NULL if some error occurred.
+ */
+static struct nlmsghdr *
+flow_tcf_alloc_nlcmd(struct tcf_nlcb_context *ctx, uint32_t size)
+{
+ struct tcf_nlcb_buf *buf;
+ struct nlmsghdr *nlh;
+
+ size = NLMSG_ALIGN(size);
+ buf = LIST_FIRST(&ctx->nlbuf);
+ if (buf && (buf->size + size) <= ctx->bufsize) {
+ nlh = (struct nlmsghdr *)&buf->msg[buf->size];
+ buf->size += size;
+ return nlh;
+ }
+ if (size > ctx->bufsize) {
+ DRV_LOG(WARNING, "netlink: too long command buffer requested");
+ return NULL;
+ }
+ buf = rte_malloc(__func__,
+ ctx->bufsize + sizeof(struct tcf_nlcb_buf),
+ alignof(struct tcf_nlcb_buf));
+ if (!buf) {
+ DRV_LOG(WARNING, "netlink: no memory for command buffer");
+ return NULL;
+ }
+ LIST_INSERT_HEAD(&ctx->nlbuf, buf, next);
+ buf->size = size;
+ nlh = (struct nlmsghdr *)&buf->msg[0];
+ return nlh;
+}
+
+/**
+ * Send the buffers with prepared netlink commands. Scans the list and
+ * sends all found buffers. Buffers are sent and freed anyway in order
+ * to prevent memory leakage if some every message in received packet.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in, out] ctx
+ * Pointer to callback context with command buffers list.
+ *
+ * @return
+ * Zero value on success, negative errno value otherwise
+ * and rte_errno is set.
+ */
+static int
+flow_tcf_send_nlcmd(struct mlx5_flow_tcf_context *tcf,
+ struct tcf_nlcb_context *ctx)
+{
+ struct tcf_nlcb_buf *bc = LIST_FIRST(&ctx->nlbuf);
+ int ret = 0;
+
+ while (bc) {
+ struct tcf_nlcb_buf *bn = LIST_NEXT(bc, next);
+ struct nlmsghdr *nlh;
+ uint32_t msg = 0;
+ int rc;
+
+ while (msg < bc->size) {
+ /*
+ * Send Netlink commands from buffer in one by one
+ * fashion. If we send multiple rule deletion commands
+ * in one Netlink message and some error occurs it may
+ * cause multiple ACK error messages and break sequence
+ * numbers of Netlink communication, because we expect
+ * the only one ACK reply.
+ */
+ assert((bc->size - msg) >= sizeof(struct nlmsghdr));
+ nlh = (struct nlmsghdr *)&bc->msg[msg];
+ assert((bc->size - msg) >= nlh->nlmsg_len);
+ msg += nlh->nlmsg_len;
+ rc = flow_tcf_nl_ack(tcf, nlh, NULL, NULL);
+ if (rc) {
+ DRV_LOG(WARNING,
+ "netlink: cleanup error %d", rc);
+ if (!ret)
+ ret = rc;
+ }
+ }
+ rte_free(bc);
+ bc = bn;
+ }
+ LIST_INIT(&ctx->nlbuf);
+ return ret;
+}
+
+/**
+ * Collect local IP address rules with scope link attribute on specified
+ * network device. This is callback routine called by libmnl mnl_cb_run()
+ * in loop for every message in received packet.
+ *
+ * @param[in] nlh
+ * Pointer to reply header.
+ * @param[in, out] arg
+ * Opaque data pointer for this callback.
+ *
+ * @return
+ * A positive, nonzero value on success, negative errno value otherwise
+ * and rte_errno is set.
+ */
+static int
+flow_tcf_collect_local_cb(const struct nlmsghdr *nlh, void *arg)
+{
+ struct tcf_nlcb_context *ctx = arg;
+ struct nlmsghdr *cmd;
+ struct ifaddrmsg *ifa;
+ struct nlattr *na;
+ struct nlattr *na_local = NULL;
+ struct nlattr *na_peer = NULL;
+ unsigned char family;
+ uint32_t size;
+
+ if (nlh->nlmsg_type != RTM_NEWADDR) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ ifa = mnl_nlmsg_get_payload(nlh);
+ family = ifa->ifa_family;
+ if (ifa->ifa_index != ctx->ifindex ||
+ ifa->ifa_scope != RT_SCOPE_LINK ||
+ !(ifa->ifa_flags & IFA_F_PERMANENT) ||
+ (family != AF_INET && family != AF_INET6))
+ return 1;
+ mnl_attr_for_each(na, nlh, sizeof(*ifa)) {
+ switch (mnl_attr_get_type(na)) {
+ case IFA_LOCAL:
+ na_local = na;
+ break;
+ case IFA_ADDRESS:
+ na_peer = na;
+ break;
+ }
+ if (na_local && na_peer)
+ break;
+ }
+ if (!na_local || !na_peer)
+ return 1;
+ /* Local rule found with scope link, permanent and assigned peer. */
+ size = MNL_ALIGN(sizeof(struct nlmsghdr)) +
+ MNL_ALIGN(sizeof(struct ifaddrmsg)) +
+ (family == AF_INET6 ? 2 * SZ_NLATTR_DATA_OF(IPV6_ADDR_LEN)
+ : 2 * SZ_NLATTR_TYPE_OF(uint32_t));
+ cmd = flow_tcf_alloc_nlcmd(ctx, size);
+ if (!cmd) {
+ rte_errno = ENOMEM;
+ return -rte_errno;
+ }
+ cmd = mnl_nlmsg_put_header(cmd);
+ cmd->nlmsg_type = RTM_DELADDR;
+ cmd->nlmsg_flags = NLM_F_REQUEST;
+ ifa = mnl_nlmsg_put_extra_header(cmd, sizeof(*ifa));
+ ifa->ifa_flags = IFA_F_PERMANENT;
+ ifa->ifa_scope = RT_SCOPE_LINK;
+ ifa->ifa_index = ctx->ifindex;
+ if (family == AF_INET) {
+ ifa->ifa_family = AF_INET;
+ ifa->ifa_prefixlen = 32;
+ mnl_attr_put_u32(cmd, IFA_LOCAL, mnl_attr_get_u32(na_local));
+ mnl_attr_put_u32(cmd, IFA_ADDRESS, mnl_attr_get_u32(na_peer));
+ } else {
+ ifa->ifa_family = AF_INET6;
+ ifa->ifa_prefixlen = 128;
+ mnl_attr_put(cmd, IFA_LOCAL, IPV6_ADDR_LEN,
+ mnl_attr_get_payload(na_local));
+ mnl_attr_put(cmd, IFA_ADDRESS, IPV6_ADDR_LEN,
+ mnl_attr_get_payload(na_peer));
+ }
+ assert(size == cmd->nlmsg_len);
+ return 1;
+}
+
+/**
+ * Cleanup the local IP addresses on outer interface.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in] ifindex
+ * Network inferface index to perform cleanup.
+ */
+static void
+flow_tcf_encap_local_cleanup(struct mlx5_flow_tcf_context *tcf,
+ unsigned int ifindex)
+{
+ struct nlmsghdr *nlh;
+ struct ifaddrmsg *ifa;
+ struct tcf_nlcb_context ctx = {
+ .ifindex = ifindex,
+ .bufsize = MNL_REQUEST_SIZE,
+ .nlbuf = LIST_HEAD_INITIALIZER(),
+ };
+ int ret;
+
+ assert(ifindex);
+ /*
+ * Seek and destroy leftovers of local IP addresses with
+ * matching properties "scope link".
+ */
+ nlh = mnl_nlmsg_put_header(tcf->buf);
+ nlh->nlmsg_type = RTM_GETADDR;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ ifa = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifa));
+ ifa->ifa_family = AF_UNSPEC;
+ ifa->ifa_index = ifindex;
+ ifa->ifa_scope = RT_SCOPE_LINK;
+ ret = flow_tcf_nl_ack(tcf, nlh, flow_tcf_collect_local_cb, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: query device list error %d", ret);
+ ret = flow_tcf_send_nlcmd(tcf, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: device delete error %d", ret);
+}
+
+/**
+ * Collect neigh permament rules on specified network device.
+ * This is callback routine called by libmnl mnl_cb_run() in loop for
+ * every message in received packet.
+ *
+ * @param[in] nlh
+ * Pointer to reply header.
+ * @param[in, out] arg
+ * Opaque data pointer for this callback.
+ *
+ * @return
+ * A positive, nonzero value on success, negative errno value otherwise
+ * and rte_errno is set.
+ */
+static int
+flow_tcf_collect_neigh_cb(const struct nlmsghdr *nlh, void *arg)
+{
+ struct tcf_nlcb_context *ctx = arg;
+ struct nlmsghdr *cmd;
+ struct ndmsg *ndm;
+ struct nlattr *na;
+ struct nlattr *na_ip = NULL;
+ struct nlattr *na_mac = NULL;
+ unsigned char family;
+ uint32_t size;
+
+ if (nlh->nlmsg_type != RTM_NEWNEIGH) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ ndm = mnl_nlmsg_get_payload(nlh);
+ family = ndm->ndm_family;
+ if (ndm->ndm_ifindex != (int)ctx->ifindex ||
+ !(ndm->ndm_state & NUD_PERMANENT) ||
+ (family != AF_INET && family != AF_INET6))
+ return 1;
+ mnl_attr_for_each(na, nlh, sizeof(*ndm)) {
+ switch (mnl_attr_get_type(na)) {
+ case NDA_DST:
+ na_ip = na;
+ break;
+ case NDA_LLADDR:
+ na_mac = na;
+ break;
+ }
+ if (na_mac && na_ip)
+ break;
+ }
+ if (!na_mac || !na_ip)
+ return 1;
+ /* Neigh rule with permenent attribute found. */
+ size = MNL_ALIGN(sizeof(struct nlmsghdr)) +
+ MNL_ALIGN(sizeof(struct ndmsg)) +
+ SZ_NLATTR_DATA_OF(ETHER_ADDR_LEN) +
+ (family == AF_INET6 ? SZ_NLATTR_DATA_OF(IPV6_ADDR_LEN)
+ : SZ_NLATTR_TYPE_OF(uint32_t));
+ cmd = flow_tcf_alloc_nlcmd(ctx, size);
+ if (!cmd) {
+ rte_errno = ENOMEM;
+ return -rte_errno;
+ }
+ cmd = mnl_nlmsg_put_header(cmd);
+ cmd->nlmsg_type = RTM_DELNEIGH;
+ cmd->nlmsg_flags = NLM_F_REQUEST;
+ ndm = mnl_nlmsg_put_extra_header(cmd, sizeof(*ndm));
+ ndm->ndm_ifindex = ctx->ifindex;
+ ndm->ndm_state = NUD_PERMANENT;
+ ndm->ndm_flags = 0;
+ ndm->ndm_type = 0;
+ if (family == AF_INET) {
+ ndm->ndm_family = AF_INET;
+ mnl_attr_put_u32(cmd, NDA_DST, mnl_attr_get_u32(na_ip));
+ } else {
+ ndm->ndm_family = AF_INET6;
+ mnl_attr_put(cmd, NDA_DST, IPV6_ADDR_LEN,
+ mnl_attr_get_payload(na_ip));
+ }
+ mnl_attr_put(cmd, NDA_LLADDR, ETHER_ADDR_LEN,
+ mnl_attr_get_payload(na_mac));
+ assert(size == cmd->nlmsg_len);
+ return 1;
+}
+
+/**
+ * Cleanup the neigh rules on outer interface.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in] ifindex
+ * Network inferface index to perform cleanup.
+ */
+static void
+flow_tcf_encap_neigh_cleanup(struct mlx5_flow_tcf_context *tcf,
+ unsigned int ifindex)
+{
+ struct nlmsghdr *nlh;
+ struct ndmsg *ndm;
+ struct tcf_nlcb_context ctx = {
+ .ifindex = ifindex,
+ .bufsize = MNL_REQUEST_SIZE,
+ .nlbuf = LIST_HEAD_INITIALIZER(),
+ };
+ int ret;
+
+ assert(ifindex);
+ /* Seek and destroy leftovers of neigh rules. */
+ nlh = mnl_nlmsg_put_header(tcf->buf);
+ nlh->nlmsg_type = RTM_GETNEIGH;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ ndm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ndm));
+ ndm->ndm_family = AF_UNSPEC;
+ ndm->ndm_ifindex = ifindex;
+ ndm->ndm_state = NUD_PERMANENT;
+ ret = flow_tcf_nl_ack(tcf, nlh, flow_tcf_collect_neigh_cb, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: query device list error %d", ret);
+ ret = flow_tcf_send_nlcmd(tcf, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: device delete error %d", ret);
+}
+
+/**
+ * Collect indices of VXLAN encap/decap interfaces associated with device.
+ * This is callback routine called by libmnl mnl_cb_run() in loop for
+ * every message in received packet.
+ *
+ * @param[in] nlh
+ * Pointer to reply header.
+ * @param[in, out] arg
+ * Opaque data pointer for this callback.
+ *
+ * @return
+ * A positive, nonzero value on success, negative errno value otherwise
+ * and rte_errno is set.
+ */
+static int
+flow_tcf_collect_vxlan_cb(const struct nlmsghdr *nlh, void *arg)
+{
+ struct tcf_nlcb_context *ctx = arg;
+ struct nlmsghdr *cmd;
+ struct ifinfomsg *ifm;
+ struct nlattr *na;
+ struct nlattr *na_info = NULL;
+ struct nlattr *na_vxlan = NULL;
+ bool found = false;
+ unsigned int vxindex;
+ uint32_t size;
+
+ if (nlh->nlmsg_type != RTM_NEWLINK) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ ifm = mnl_nlmsg_get_payload(nlh);
+ if (!ifm->ifi_index) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ mnl_attr_for_each(na, nlh, sizeof(*ifm))
+ if (mnl_attr_get_type(na) == IFLA_LINKINFO) {
+ na_info = na;
+ break;
+ }
+ if (!na_info)
+ return 1;
+ mnl_attr_for_each_nested(na, na_info) {
+ switch (mnl_attr_get_type(na)) {
+ case IFLA_INFO_KIND:
+ if (!strncmp("vxlan", mnl_attr_get_str(na),
+ mnl_attr_get_len(na)))
+ found = true;
+ break;
+ case IFLA_INFO_DATA:
+ na_vxlan = na;
+ break;
+ }
+ if (found && na_vxlan)
+ break;
+ }
+ if (!found || !na_vxlan)
+ return 1;
+ found = false;
+ mnl_attr_for_each_nested(na, na_vxlan) {
+ if (mnl_attr_get_type(na) == IFLA_VXLAN_LINK &&
+ mnl_attr_get_u32(na) == ctx->ifindex) {
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ return 1;
+ /* Attached VXLAN device found, store the command to delete. */
+ vxindex = ifm->ifi_index;
+ size = MNL_ALIGN(sizeof(struct nlmsghdr)) +
+ MNL_ALIGN(sizeof(struct ifinfomsg));
+ cmd = flow_tcf_alloc_nlcmd(ctx, size);
+ if (!cmd) {
+ rte_errno = ENOMEM;
+ return -rte_errno;
+ }
+ cmd = mnl_nlmsg_put_header(cmd);
+ cmd->nlmsg_type = RTM_DELLINK;
+ cmd->nlmsg_flags = NLM_F_REQUEST;
+ ifm = mnl_nlmsg_put_extra_header(cmd, sizeof(*ifm));
+ ifm->ifi_family = AF_UNSPEC;
+ ifm->ifi_index = vxindex;
+ assert(size == cmd->nlmsg_len);
+ return 1;
+}
+
+/**
+ * Cleanup the outer interface. Removes all found vxlan devices
+ * attached to specified index, flushes the meigh and local IP
+ * datavase.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in] ifindex
+ * Network inferface index to perform cleanup.
+ */
+static void
+flow_tcf_encap_iface_cleanup(struct mlx5_flow_tcf_context *tcf,
+ unsigned int ifindex)
+{
+ struct nlmsghdr *nlh;
+ struct ifinfomsg *ifm;
+ struct tcf_nlcb_context ctx = {
+ .ifindex = ifindex,
+ .bufsize = MNL_REQUEST_SIZE,
+ .nlbuf = LIST_HEAD_INITIALIZER(),
+ };
+ int ret;
+
+ assert(ifindex);
+ /*
+ * Seek and destroy leftover VXLAN encap/decap interfaces with
+ * matching properties.
+ */
+ nlh = mnl_nlmsg_put_header(tcf->buf);
+ nlh->nlmsg_type = RTM_GETLINK;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ ifm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifm));
+ ifm->ifi_family = AF_UNSPEC;
+ ret = flow_tcf_nl_ack(tcf, nlh, flow_tcf_collect_vxlan_cb, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: query device list error %d", ret);
+ ret = flow_tcf_send_nlcmd(tcf, &ctx);
+ if (ret)
+ DRV_LOG(WARNING, "netlink: device delete error %d", ret);
+}
+
+/**
+ * Emit Netlink message to add/remove local address to the outer device.
+ * The address being added is visible within the link only (scope link).
+ *
+ * Note that an implicit route is maintained by the kernel due to the
+ * presence of a peer address (IFA_ADDRESS).
+ *
+ * These rules are used for encapsultion only and allow to assign
+ * the outer tunnel source IP address.
+ *
+ * @param[in] tcf
+ * Libmnl socket context object.
+ * @param[in] encap
+ * Encapsulation properties (source address and its peer).
+ * @param[in] ifindex
+ * Network interface to apply rule.
+ * @param[in] enable
+ * Toggle between add and remove.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_tcf_rule_local(struct mlx5_flow_tcf_context *tcf,
+ const struct flow_tcf_vxlan_encap *encap,
+ unsigned int ifindex,
+ bool enable,
+ struct rte_flow_error *error)
+{
+ struct nlmsghdr *nlh;
+ struct ifaddrmsg *ifa;
+ alignas(struct nlmsghdr)
+ uint8_t buf[mnl_nlmsg_size(sizeof(*ifa) + 128)];
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = enable ? RTM_NEWADDR : RTM_DELADDR;
+ nlh->nlmsg_flags =
+ NLM_F_REQUEST | (enable ? NLM_F_CREATE | NLM_F_REPLACE : 0);
+ nlh->nlmsg_seq = 0;
+ ifa = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifa));
+ ifa->ifa_flags = IFA_F_PERMANENT;
+ ifa->ifa_scope = RT_SCOPE_LINK;
+ ifa->ifa_index = ifindex;
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_SRC) {
+ ifa->ifa_family = AF_INET;
+ ifa->ifa_prefixlen = 32;
+ mnl_attr_put_u32(nlh, IFA_LOCAL, encap->ipv4.src);
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_DST)
+ mnl_attr_put_u32(nlh, IFA_ADDRESS,
+ encap->ipv4.dst);
+ } else {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_SRC);
+ ifa->ifa_family = AF_INET6;
+ ifa->ifa_prefixlen = 128;
+ mnl_attr_put(nlh, IFA_LOCAL,
+ sizeof(encap->ipv6.src),
+ &encap->ipv6.src);
+ if (encap->mask & FLOW_TCF_ENCAP_IPV6_DST)
+ mnl_attr_put(nlh, IFA_ADDRESS,
+ sizeof(encap->ipv6.dst),
+ &encap->ipv6.dst);
+ }
+ if (!flow_tcf_nl_ack(tcf, nlh, NULL, NULL))
+ return 0;
+ return rte_flow_error_set(error, rte_errno,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "netlink: cannot complete IFA request"
+ " (ip addr add)");
+}
+
+/**
+ * Emit Netlink message to add/remove neighbor.
+ *
+ * @param[in] tcf
+ * Libmnl socket context object.
+ * @param[in] encap
+ * Encapsulation properties (destination address).
+ * @param[in] ifindex
+ * Network interface.
+ * @param[in] enable
+ * Toggle between add and remove.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_tcf_rule_neigh(struct mlx5_flow_tcf_context *tcf,
+ const struct flow_tcf_vxlan_encap *encap,
+ unsigned int ifindex,
+ bool enable,
+ struct rte_flow_error *error)
+{
+ struct nlmsghdr *nlh;
+ struct ndmsg *ndm;
+ alignas(struct nlmsghdr)
+ uint8_t buf[mnl_nlmsg_size(sizeof(*ndm) + 128)];
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = enable ? RTM_NEWNEIGH : RTM_DELNEIGH;
+ nlh->nlmsg_flags =
+ NLM_F_REQUEST | (enable ? NLM_F_CREATE | NLM_F_REPLACE : 0);
+ nlh->nlmsg_seq = 0;
+ ndm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ndm));
+ ndm->ndm_ifindex = ifindex;
+ ndm->ndm_state = NUD_PERMANENT;
+ ndm->ndm_flags = 0;
+ ndm->ndm_type = 0;
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_DST) {
+ ndm->ndm_family = AF_INET;
+ mnl_attr_put_u32(nlh, NDA_DST, encap->ipv4.dst);
+ } else {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_DST);
+ ndm->ndm_family = AF_INET6;
+ mnl_attr_put(nlh, NDA_DST, sizeof(encap->ipv6.dst),
+ &encap->ipv6.dst);
+ }
+ if (encap->mask & FLOW_TCF_ENCAP_ETH_SRC && enable)
+ DRV_LOG(WARNING,
+ "outer ethernet source address cannot be "
+ "forced for VXLAN encapsulation");
+ if (encap->mask & FLOW_TCF_ENCAP_ETH_DST)
+ mnl_attr_put(nlh, NDA_LLADDR, sizeof(encap->eth.dst),
+ &encap->eth.dst);
+ if (!flow_tcf_nl_ack(tcf, nlh, NULL, NULL))
+ return 0;
+ return rte_flow_error_set(error, rte_errno,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "netlink: cannot complete ND request"
+ " (ip neigh)");
+}
+
+/**
+ * Manage the local IP addresses and their peers IP addresses on the
+ * outer interface for encapsulation purposes. The kernel searches the
+ * appropriate device for tunnel egress traffic using the outer source
+ * IP, this IP should be assigned to the outer network device, otherwise
+ * kernel rejects the rule.
+ *
+ * Adds or removes the addresses using the Netlink command like this:
+ * ip addr add <src_ip> peer <dst_ip> scope link dev <ifouter>
+ *
+ * The addresses are local to the netdev ("scope link"), this reduces
+ * the risk of conflicts. Note that an implicit route is maintained by
+ * the kernel due to the presence of a peer address (IFA_ADDRESS).
+ *
+ * @param[in] tcf
+ * Libmnl socket context object.
+ * @param[in] vtep
+ * VTEP object, contains rule database and ifouter index.
+ * @param[in] dev_flow
+ * Flow object, contains the tunnel parameters (for encap only).
+ * @param[in] enable
+ * Toggle between add and remove.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_tcf_encap_local(struct mlx5_flow_tcf_context *tcf,
+ struct tcf_vtep *vtep,
+ struct mlx5_flow *dev_flow,
+ bool enable,
+ struct rte_flow_error *error)
+{
+ const struct flow_tcf_vxlan_encap *encap = dev_flow->tcf.vxlan_encap;
+ struct tcf_local_rule *rule;
+ bool found = false;
+ int ret;
+
+ assert(encap);
+ assert(encap->hdr.type == FLOW_TCF_TUNACT_VXLAN_ENCAP);
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_SRC) {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV4_DST);
+ LIST_FOREACH(rule, &vtep->local, next) {
+ if (rule->mask & FLOW_TCF_ENCAP_IPV4_SRC &&
+ encap->ipv4.src == rule->ipv4.src &&
+ encap->ipv4.dst == rule->ipv4.dst) {
+ found = true;
+ break;
+ }
+ }
+ } else {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_SRC);
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_DST);
+ LIST_FOREACH(rule, &vtep->local, next) {
+ if (rule->mask & FLOW_TCF_ENCAP_IPV6_SRC &&
+ !memcmp(&encap->ipv6.src, &rule->ipv6.src,
+ sizeof(encap->ipv6.src)) &&
+ !memcmp(&encap->ipv6.dst, &rule->ipv6.dst,
+ sizeof(encap->ipv6.dst))) {
+ found = true;
+ break;
+ }
+ }
+ }
+ if (found) {
+ if (enable) {
+ rule->refcnt++;
+ return 0;
+ }
+ if (!rule->refcnt || !--rule->refcnt) {
+ LIST_REMOVE(rule, next);
+ return flow_tcf_rule_local(tcf, encap,
+ vtep->ifouter, false, error);
+ }
+ return 0;
+ }
+ if (!enable) {
+ DRV_LOG(WARNING, "disabling not existing local rule");
+ rte_flow_error_set(error, ENOENT,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "disabling not existing local rule");
+ return -ENOENT;
+ }
+ rule = rte_zmalloc(__func__, sizeof(struct tcf_local_rule),
+ alignof(struct tcf_local_rule));
+ if (!rule) {
+ rte_flow_error_set(error, ENOMEM,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "unable to allocate memory for local rule");
+ return -rte_errno;
+ }
+ *rule = (struct tcf_local_rule){.refcnt = 0,
+ .mask = 0,
+ };
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_SRC) {
+ rule->mask = FLOW_TCF_ENCAP_IPV4_SRC
+ | FLOW_TCF_ENCAP_IPV4_DST;
+ rule->ipv4.src = encap->ipv4.src;
+ rule->ipv4.dst = encap->ipv4.dst;
+ } else {
+ rule->mask = FLOW_TCF_ENCAP_IPV6_SRC
+ | FLOW_TCF_ENCAP_IPV6_DST;
+ memcpy(&rule->ipv6.src, &encap->ipv6.src, IPV6_ADDR_LEN);
+ memcpy(&rule->ipv6.dst, &encap->ipv6.dst, IPV6_ADDR_LEN);
+ }
+ ret = flow_tcf_rule_local(tcf, encap, vtep->ifouter, true, error);
+ if (ret) {
+ rte_free(rule);
+ return ret;
+ }
+ rule->refcnt++;
+ LIST_INSERT_HEAD(&vtep->local, rule, next);
+ return 0;
+}
+
+/**
+ * Manage the destination MAC/IP addresses neigh database, kernel uses
+ * this one to determine the destination MAC address within encapsulation
+ * header. Adds or removes the entries using the Netlink command like this:
+ * ip neigh add dev <ifouter> lladdr <dst_mac> to <dst_ip> nud permanent
+ *
+ * @param[in] tcf
+ * Libmnl socket context object.
+ * @param[in] vtep
+ * VTEP object, contains rule database and ifouter index.
+ * @param[in] dev_flow
+ * Flow object, contains the tunnel parameters (for encap only).
+ * @param[in] enable
+ * Toggle between add and remove.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_tcf_encap_neigh(struct mlx5_flow_tcf_context *tcf,
+ struct tcf_vtep *vtep,
+ struct mlx5_flow *dev_flow,
+ bool enable,
+ struct rte_flow_error *error)
+{
+ const struct flow_tcf_vxlan_encap *encap = dev_flow->tcf.vxlan_encap;
+ struct tcf_neigh_rule *rule;
+ bool found = false;
+ int ret;
+
+ assert(encap);
+ assert(encap->hdr.type == FLOW_TCF_TUNACT_VXLAN_ENCAP);
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_DST) {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV4_SRC);
+ LIST_FOREACH(rule, &vtep->neigh, next) {
+ if (rule->mask & FLOW_TCF_ENCAP_IPV4_DST &&
+ encap->ipv4.dst == rule->ipv4.dst) {
+ found = true;
+ break;
+ }
+ }
+ } else {
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_SRC);
+ assert(encap->mask & FLOW_TCF_ENCAP_IPV6_DST);
+ LIST_FOREACH(rule, &vtep->neigh, next) {
+ if (rule->mask & FLOW_TCF_ENCAP_IPV6_DST &&
+ !memcmp(&encap->ipv6.dst, &rule->ipv6.dst,
+ sizeof(encap->ipv6.dst))) {
+ found = true;
+ break;
+ }
+ }
+ }
+ if (found) {
+ if (memcmp(&encap->eth.dst, &rule->eth,
+ sizeof(encap->eth.dst))) {
+ DRV_LOG(WARNING, "Destination MAC differs"
+ " in neigh rule");
+ rte_flow_error_set(error, EEXIST,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL, "Different MAC address"
+ " neigh rule for the same"
+ " destination IP");
+ return -EEXIST;
+ }
+ if (enable) {
+ rule->refcnt++;
+ return 0;
+ }
+ if (!rule->refcnt || !--rule->refcnt) {
+ LIST_REMOVE(rule, next);
+ return flow_tcf_rule_neigh(tcf, encap,
+ vtep->ifouter,
+ false, error);
+ }
+ return 0;
+ }
+ if (!enable) {
+ DRV_LOG(WARNING, "Disabling not existing neigh rule");
+ rte_flow_error_set(error, ENOENT,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "unable to allocate memory for neigh rule");
+ return -ENOENT;
+ }
+ rule = rte_zmalloc(__func__, sizeof(struct tcf_neigh_rule),
+ alignof(struct tcf_neigh_rule));
+ if (!rule) {
+ rte_flow_error_set(error, ENOMEM,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "unable to allocate memory for neigh rule");
+ return -rte_errno;
+ }
+ *rule = (struct tcf_neigh_rule){.refcnt = 0,
+ .mask = 0,
+ };
+ if (encap->mask & FLOW_TCF_ENCAP_IPV4_DST) {
+ rule->mask = FLOW_TCF_ENCAP_IPV4_DST;
+ rule->ipv4.dst = encap->ipv4.dst;
+ } else {
+ rule->mask = FLOW_TCF_ENCAP_IPV6_DST;
+ memcpy(&rule->ipv6.dst, &encap->ipv6.dst, IPV6_ADDR_LEN);
+ }
+ memcpy(&rule->eth, &encap->eth.dst, sizeof(rule->eth));
+ ret = flow_tcf_rule_neigh(tcf, encap, vtep->ifouter, true, error);
+ if (ret) {
+ rte_free(rule);
+ return ret;
+ }
+ rule->refcnt++;
+ LIST_INSERT_HEAD(&vtep->neigh, rule, next);
+ return 0;
+}
+
+/* VTEP device list is shared between PMD port instances. */
+static LIST_HEAD(, tcf_vtep) vtep_list_vxlan = LIST_HEAD_INITIALIZER();
+static pthread_mutex_t vtep_list_mutex = PTHREAD_MUTEX_INITIALIZER;
/**
* Deletes VTEP network device.
ifm->ifi_family = AF_UNSPEC;
ifm->ifi_index = vtep->ifindex;
assert(sizeof(buf) >= nlh->nlmsg_len);
- ret = flow_tcf_nl_ack(tcf, nlh, 0, NULL, NULL);
+ ret = flow_tcf_nl_ack(tcf, nlh, NULL, NULL);
if (ret)
DRV_LOG(WARNING, "netlink: error deleting vxlan"
" encap/decap ifindex %u",
mnl_attr_nest_end(nlh, na_vxlan);
mnl_attr_nest_end(nlh, na_info);
assert(sizeof(buf) >= nlh->nlmsg_len);
- ret = flow_tcf_nl_ack(tcf, nlh, 0, NULL, NULL);
+ ret = flow_tcf_nl_ack(tcf, nlh, NULL, NULL);
if (ret) {
DRV_LOG(WARNING,
"netlink: VTEP %s create failure (%d)",
ifm->ifi_index = vtep->ifindex;
ifm->ifi_flags = IFF_UP;
ifm->ifi_change = IFF_UP;
- ret = flow_tcf_nl_ack(tcf, nlh, 0, NULL, NULL);
+ ret = flow_tcf_nl_ack(tcf, nlh, NULL, NULL);
if (ret) {
rte_flow_error_set(error, -errno,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
{
static uint16_t encap_port = MLX5_VXLAN_PORT_MIN - 1;
struct tcf_vtep *vtep;
+ int ret;
assert(ifouter);
/* Look whether the attached VTEP for encap is created. */
uint16_t pcnt;
/* Not found, we should create the new attached VTEP. */
+ flow_tcf_encap_iface_cleanup(tcf, ifouter);
+ flow_tcf_encap_local_cleanup(tcf, ifouter);
+ flow_tcf_encap_neigh_cleanup(tcf, ifouter);
for (pcnt = 0; pcnt <= (MLX5_VXLAN_PORT_MAX
- MLX5_VXLAN_PORT_MIN); pcnt++) {
encap_port++;
}
assert(vtep->ifouter == ifouter);
assert(vtep->ifindex);
+ /* Create local ipaddr with peer to specify the outer IPs. */
+ ret = flow_tcf_encap_local(tcf, vtep, dev_flow, true, error);
+ if (!ret) {
+ /* Create neigh rule to specify outer destination MAC. */
+ ret = flow_tcf_encap_neigh(tcf, vtep, dev_flow, true, error);
+ if (ret)
+ flow_tcf_encap_local(tcf, vtep,
+ dev_flow, false, error);
+ }
+ if (ret) {
+ if (--vtep->refcnt == 0)
+ flow_tcf_vtep_delete(tcf, vtep);
+ return NULL;
+ }
return vtep;
}
case FLOW_TCF_TUNACT_VXLAN_DECAP:
break;
case FLOW_TCF_TUNACT_VXLAN_ENCAP:
+ /* Remove the encap ancillary rules first. */
+ flow_tcf_encap_neigh(tcf, vtep, dev_flow, false, NULL);
+ flow_tcf_encap_local(tcf, vtep, dev_flow, false, NULL);
break;
default:
assert(false);
pthread_mutex_unlock(&vtep_list_mutex);
}
+struct tcf_nlcb_query {
+ uint32_t handle;
+ uint32_t tc_flags;
+ uint32_t flags_valid:1;
+};
+
+/**
+ * Collect queried rule attributes. This is callback routine called by
+ * libmnl mnl_cb_run() in loop for every message in received packet.
+ * Current implementation collects the flower flags only.
+ *
+ * @param[in] nlh
+ * Pointer to reply header.
+ * @param[in, out] arg
+ * Context pointer for this callback.
+ *
+ * @return
+ * A positive, nonzero value on success (required by libmnl
+ * to continue messages processing).
+ */
+static int
+flow_tcf_collect_query_cb(const struct nlmsghdr *nlh, void *arg)
+{
+ struct tcf_nlcb_query *query = arg;
+ struct tcmsg *tcm = mnl_nlmsg_get_payload(nlh);
+ struct nlattr *na, *na_opt;
+ bool flower = false;
+
+ if (nlh->nlmsg_type != RTM_NEWTFILTER ||
+ tcm->tcm_handle != query->handle)
+ return 1;
+ mnl_attr_for_each(na, nlh, sizeof(*tcm)) {
+ switch (mnl_attr_get_type(na)) {
+ case TCA_KIND:
+ if (strcmp(mnl_attr_get_payload(na), "flower")) {
+ /* Not flower filter, drop entire message. */
+ return 1;
+ }
+ flower = true;
+ break;
+ case TCA_OPTIONS:
+ if (!flower) {
+ /* Not flower options, drop entire message. */
+ return 1;
+ }
+ /* Check nested flower options. */
+ mnl_attr_for_each_nested(na_opt, na) {
+ switch (mnl_attr_get_type(na_opt)) {
+ case TCA_FLOWER_FLAGS:
+ query->flags_valid = 1;
+ query->tc_flags =
+ mnl_attr_get_u32(na_opt);
+ break;
+ }
+ }
+ break;
+ }
+ }
+ return 1;
+}
+
+/**
+ * Query a TC flower rule flags via netlink.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in] dev_flow
+ * Pointer to the flow.
+ * @param[out] pflags
+ * pointer to the data retrieved by the query.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise.
+ */
+static int
+flow_tcf_query_flags(struct mlx5_flow_tcf_context *tcf,
+ struct mlx5_flow *dev_flow,
+ uint32_t *pflags)
+{
+ struct nlmsghdr *nlh;
+ struct tcmsg *tcm;
+ struct tcf_nlcb_query query = {
+ .handle = dev_flow->tcf.tcm->tcm_handle,
+ };
+
+ nlh = mnl_nlmsg_put_header(tcf->buf);
+ nlh->nlmsg_type = RTM_GETTFILTER;
+ nlh->nlmsg_flags = NLM_F_REQUEST;
+ tcm = mnl_nlmsg_put_extra_header(nlh, sizeof(*tcm));
+ memcpy(tcm, dev_flow->tcf.tcm, sizeof(*tcm));
+ /*
+ * Ignore Netlink error for filter query operations.
+ * The reply length is sent by kernel as errno.
+ * Just check we got the flags option.
+ */
+ flow_tcf_nl_ack(tcf, nlh, flow_tcf_collect_query_cb, &query);
+ if (!query.flags_valid) {
+ *pflags = 0;
+ return -ENOENT;
+ }
+ *pflags = query.tc_flags;
+ return 0;
+}
+
+/**
+ * Query and check the in_hw set for specified rule.
+ *
+ * @param[in] tcf
+ * Context object initialized by mlx5_flow_tcf_context_create().
+ * @param[in] dev_flow
+ * Pointer to the flow to check.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise.
+ */
+static int
+flow_tcf_check_inhw(struct mlx5_flow_tcf_context *tcf,
+ struct mlx5_flow *dev_flow)
+{
+ uint32_t flags;
+ int ret;
+
+ ret = flow_tcf_query_flags(tcf, dev_flow, &flags);
+ if (ret)
+ return ret;
+ return (flags & TCA_CLS_FLAGS_IN_HW) ? 0 : -ENOENT;
+}
+
+/**
+ * Remove flow from E-Switch by sending Netlink message.
+ *
+ * @param[in] dev
+ * Pointer to Ethernet device.
+ * @param[in, out] flow
+ * Pointer to the sub flow.
+ */
+static void
+flow_tcf_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_flow_tcf_context *ctx = priv->tcf_context;
+ struct mlx5_flow *dev_flow;
+ struct nlmsghdr *nlh;
+
+ if (!flow)
+ return;
+ dev_flow = LIST_FIRST(&flow->dev_flows);
+ if (!dev_flow)
+ return;
+ /* E-Switch flow can't be expanded. */
+ assert(!LIST_NEXT(dev_flow, next));
+ if (dev_flow->tcf.applied) {
+ nlh = dev_flow->tcf.nlh;
+ nlh->nlmsg_type = RTM_DELTFILTER;
+ nlh->nlmsg_flags = NLM_F_REQUEST;
+ flow_tcf_nl_ack(ctx, nlh, NULL, NULL);
+ if (dev_flow->tcf.tunnel) {
+ assert(dev_flow->tcf.tunnel->vtep);
+ flow_tcf_vtep_release(ctx,
+ dev_flow->tcf.tunnel->vtep,
+ dev_flow);
+ dev_flow->tcf.tunnel->vtep = NULL;
+ }
+ dev_flow->tcf.applied = 0;
+ }
+}
/**
* Apply flow to E-Switch by sending Netlink message.
*dev_flow->tcf.tunnel->ifindex_ptr =
dev_flow->tcf.tunnel->vtep->ifindex;
}
- if (!flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL)) {
+ if (!flow_tcf_nl_ack(ctx, nlh, NULL, NULL)) {
dev_flow->tcf.applied = 1;
+ if (*dev_flow->tcf.ptc_flags & TCA_CLS_FLAGS_SKIP_SW)
+ return 0;
+ /*
+ * Rule was applied without skip_sw flag set.
+ * We should check whether the rule was acctually
+ * accepted by hardware (have look at in_hw flag).
+ */
+ if (flow_tcf_check_inhw(ctx, dev_flow)) {
+ flow_tcf_remove(dev, flow);
+ return rte_flow_error_set
+ (error, ENOENT,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "netlink: rule has no in_hw flag set");
+ }
return 0;
}
+ if (dev_flow->tcf.tunnel) {
+ /* Rollback the VTEP configuration if rule apply failed. */
+ assert(dev_flow->tcf.tunnel->vtep);
+ flow_tcf_vtep_release(ctx, dev_flow->tcf.tunnel->vtep,
+ dev_flow);
+ dev_flow->tcf.tunnel->vtep = NULL;
+ }
return rte_flow_error_set(error, rte_errno,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"netlink: failed to create TC flow rule");
}
-/**
- * Remove flow from E-Switch by sending Netlink message.
- *
- * @param[in] dev
- * Pointer to Ethernet device.
- * @param[in, out] flow
- * Pointer to the sub flow.
- */
-static void
-flow_tcf_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
-{
- struct priv *priv = dev->data->dev_private;
- struct mlx5_flow_tcf_context *ctx = priv->tcf_context;
- struct mlx5_flow *dev_flow;
- struct nlmsghdr *nlh;
-
- if (!flow)
- return;
- dev_flow = LIST_FIRST(&flow->dev_flows);
- if (!dev_flow)
- return;
- /* E-Switch flow can't be expanded. */
- assert(!LIST_NEXT(dev_flow, next));
- if (dev_flow->tcf.applied) {
- nlh = dev_flow->tcf.nlh;
- nlh->nlmsg_type = RTM_DELTFILTER;
- nlh->nlmsg_flags = NLM_F_REQUEST;
- flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL);
- if (dev_flow->tcf.tunnel) {
- assert(dev_flow->tcf.tunnel->vtep);
- flow_tcf_vtep_release(ctx,
- dev_flow->tcf.tunnel->vtep,
- dev_flow);
- dev_flow->tcf.tunnel->vtep = NULL;
- }
- dev_flow->tcf.applied = 0;
- }
-}
-
/**
* Remove flow from E-Switch and release resources of the device flow.
*
* Message received from Netlink.
* @param[out] data
* Pointer to data area to be filled by the parsing routine.
- * assumed to be a pinter to struct flow_tcf_stats_basic.
+ * assumed to be a pointer to struct flow_tcf_stats_basic.
*
* @return
* MNL_CB_OK value.
void *data,
struct rte_flow_error *error)
{
- struct flow_tcf_stats_basic sb_data = { 0 };
+ struct flow_tcf_stats_basic sb_data;
struct rte_flow_query_count *qc = data;
struct priv *priv = dev->data->dev_private;
struct mlx5_flow_tcf_context *ctx = priv->tcf_context;
ssize_t ret;
assert(qc);
+ memset(&sb_data, 0, sizeof(sb_data));
dev_flow = LIST_FIRST(&flow->dev_flows);
/* E-Switch flow can't be expanded. */
assert(!LIST_NEXT(dev_flow, next));
tcm->tcm_parent = TC_H_INGRESS;
assert(sizeof(buf) >= nlh->nlmsg_len);
/* Ignore errors when qdisc is already absent. */
- if (flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL) &&
+ if (flow_tcf_nl_ack(ctx, nlh, NULL, NULL) &&
rte_errno != EINVAL && rte_errno != ENOENT)
return rte_flow_error_set(error, rte_errno,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
tcm->tcm_parent = TC_H_INGRESS;
mnl_attr_put_strz_check(nlh, sizeof(buf), TCA_KIND, "ingress");
assert(sizeof(buf) >= nlh->nlmsg_len);
- if (flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL))
+ if (flow_tcf_nl_ack(ctx, nlh, NULL, NULL))
return rte_flow_error_set(error, rte_errno,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"netlink: failed to create ingress"
git.droids-corp.org / dpdk.git / blobdiff