#include <stdint.h>
#include <rte_mempool.h>
+#include <rte_memory.h>
#include <rte_atomic.h>
#include <rte_prefetch.h>
#include <rte_branch_prediction.h>
/* add new RX flags here */
/* add new TX flags here */
-#define PKT_TX_VXLAN_CKSUM (1ULL << 50) /**< TX checksum of VXLAN computed by NIC */
+
+/**
+ * TCP segmentation offload. To enable this offload feature for a
+ * packet to be transmitted on hardware supporting TSO:
+ * - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies
+ * PKT_TX_TCP_CKSUM)
+ * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6
+ * - if it's IPv4, set the PKT_TX_IP_CKSUM flag and write the IP checksum
+ * to 0 in the packet
+ * - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz
+ * - calculate the pseudo header checksum without taking ip_len in account,
+ * and set it in the TCP header. Refer to rte_ipv4_phdr_cksum() and
+ * rte_ipv6_phdr_cksum() that can be used as helpers.
+ */
+#define PKT_TX_TCP_SEG (1ULL << 49)
+
+/** TX packet is an UDP tunneled packet. It must be specified when using
+ * outer checksum offload (PKT_TX_OUTER_IP_CKSUM) */
+#define PKT_TX_UDP_TUNNEL_PKT (1ULL << 50) /**< TX packet is an UDP tunneled packet */
#define PKT_TX_IEEE1588_TMST (1ULL << 51) /**< TX IEEE1588 packet to timestamp. */
/**
#define PKT_TX_UDP_CKSUM (3ULL << 52) /**< UDP cksum of TX pkt. computed by NIC. */
#define PKT_TX_L4_MASK (3ULL << 52) /**< Mask for L4 cksum offload request. */
-#define PKT_TX_IP_CKSUM (1ULL << 54) /**< IP cksum of TX pkt. computed by NIC. */
-#define PKT_TX_IPV4_CSUM PKT_TX_IP_CKSUM /**< Alias of PKT_TX_IP_CKSUM. */
+/**
+ * Offload the IP checksum in the hardware. The flag PKT_TX_IPV4 should
+ * also be set by the application, although a PMD will only check
+ * PKT_TX_IP_CKSUM.
+ * - set the IP checksum field in the packet to 0
+ * - fill the mbuf offload information: l2_len, l3_len
+ */
+#define PKT_TX_IP_CKSUM (1ULL << 54)
-/** Tell the NIC it's an IPv4 packet. Required for L4 checksum offload. */
-#define PKT_TX_IPV4 PKT_RX_IPV4_HDR
+/**
+ * Packet is IPv4. This flag must be set when using any offload feature
+ * (TSO, L3 or L4 checksum) to tell the NIC that the packet is an IPv4
+ * packet. If the packet is a tunneled packet, this flag is related to
+ * the inner headers.
+ */
+#define PKT_TX_IPV4 (1ULL << 55)
-/** Tell the NIC it's an IPv6 packet. Required for L4 checksum offload. */
-#define PKT_TX_IPV6 PKT_RX_IPV6_HDR
+/**
+ * Packet is IPv6. This flag must be set when using an offload feature
+ * (TSO or L4 checksum) to tell the NIC that the packet is an IPv6
+ * packet. If the packet is a tunneled packet, this flag is related to
+ * the inner headers.
+ */
+#define PKT_TX_IPV6 (1ULL << 56)
-#define PKT_TX_VLAN_PKT (1ULL << 55) /**< TX packet is a 802.1q VLAN packet. */
+#define PKT_TX_VLAN_PKT (1ULL << 57) /**< TX packet is a 802.1q VLAN packet. */
/**
- * TCP segmentation offload. To enable this offload feature for a
- * packet to be transmitted on hardware supporting TSO:
- * - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies
- * PKT_TX_TCP_CKSUM)
- * - if it's IPv4, set the PKT_TX_IP_CKSUM flag and write the IP checksum
- * to 0 in the packet
- * - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz
- * - calculate the pseudo header checksum without taking ip_len in accound,
- * and set it in the TCP header. Refer to rte_ipv4_phdr_cksum() and
- * rte_ipv6_phdr_cksum() that can be used as helpers.
+ * Offload the IP checksum of an external header in the hardware. The
+ * flag PKT_TX_OUTER_IPV4 should also be set by the application, alto ugh
+ * a PMD will only check PKT_TX_IP_CKSUM. The IP checksum field in the
+ * packet must be set to 0.
+ * - set the outer IP checksum field in the packet to 0
+ * - fill the mbuf offload information: outer_l2_len, outer_l3_len
*/
-#define PKT_TX_TCP_SEG (1ULL << 49)
+#define PKT_TX_OUTER_IP_CKSUM (1ULL << 58)
+
+/**
+ * Packet outer header is IPv4. This flag must be set when using any
+ * outer offload feature (L3 or L4 checksum) to tell the NIC that the
+ * outer header of the tunneled packet is an IPv4 packet.
+ */
+#define PKT_TX_OUTER_IPV4 (1ULL << 59)
+
+/**
+ * Packet outer header is IPv6. This flag must be set when using any
+ * outer offload feature (L4 checksum) to tell the NIC that the outer
+ * header of the tunneled packet is an IPv6 packet.
+ */
+#define PKT_TX_OUTER_IPV6 (1ULL << 60)
/* Use final bit of flags to indicate a control mbuf */
#define CTRL_MBUF_FLAG (1ULL << 63) /**< Mbuf contains control data */
/* define a set of marker types that can be used to refer to set points in the
* mbuf */
typedef void *MARKER[0]; /**< generic marker for a point in a structure */
+typedef uint8_t MARKER8[0]; /**< generic marker with 1B alignment */
typedef uint64_t MARKER64[0]; /**< marker that allows us to overwrite 8 bytes
* with a single assignment */
+
/**
* The generic rte_mbuf, containing a packet mbuf.
*/
void *buf_addr; /**< Virtual address of segment buffer. */
phys_addr_t buf_physaddr; /**< Physical address of segment buffer. */
- /* next 8 bytes are initialised on RX descriptor rearm */
- MARKER64 rearm_data;
uint16_t buf_len; /**< Length of segment buffer. */
+
+ /* next 6 bytes are initialised on RX descriptor rearm */
+ MARKER8 rearm_data;
uint16_t data_off;
/**
uint64_t tso_segsz:16; /**< TCP TSO segment size */
/* fields for TX offloading of tunnels */
- uint64_t inner_l3_len:9; /**< inner L3 (IP) Hdr Length. */
- uint64_t inner_l2_len:7; /**< inner L2 (MAC) Hdr Length. */
+ uint64_t outer_l3_len:9; /**< Outer L3 (IP) Hdr Length. */
+ uint64_t outer_l2_len:7; /**< Outer L2 (MAC) Hdr Length. */
/* uint64_t unused:8; */
};
git.droids-corp.org / dpdk.git / blobdiff