/* Short TX BD (16 bytes) */
struct tx_bd_short {
+ uint16_t flags_type;
/*
- * All bits in this field must be valid on the first BD of a packet.
- * Only the packet_end bit must be valid for the remaining BDs of a
- * packet.
+ * All bits in this field must be valid on the first BD of a
+ * packet. Only the packet_end bit must be valid for the
+ * remaining BDs of a packet.
*/
/* This value identifies the type of buffer descriptor. */
- #define TX_BD_SHORT_TYPE_MASK UINT32_C(0x3f)
- #define TX_BD_SHORT_TYPE_SFT 0
- /*
- * Indicates that this BD is 16B long and is used for normal L2
- * packet transmission.
- */
- #define TX_BD_SHORT_TYPE_TX_BD_SHORT (UINT32_C(0x0) << 0)
- /*
- * If set to 1, the packet ends with the data in the buffer pointed to
- * by this descriptor. This flag must be valid on every BD.
- */
- #define TX_BD_SHORT_FLAGS_PACKET_END UINT32_C(0x40)
- /*
- * If set to 1, the device will not generate a completion for this
- * transmit packet unless there is an error in it's processing. If this
- * bit is set to 0, then the packet will be completed normally. This bit
- * must be valid only on the first BD of a packet.
- */
- #define TX_BD_SHORT_FLAGS_NO_CMPL UINT32_C(0x80)
- /*
- * This value indicates how many 16B BD locations are consumed in the
- * ring by this packet. A value of 1 indicates that this BD is the only
- * BD (and that the it is a short BD). A value of 3 indicates either 3
- * short BDs or 1 long BD and one short BD in the packet. A value of 0
- * indicates that there are 32 BD locations in the packet (the maximum).
- * This field is valid only on the first BD of a packet.
- */
- #define TX_BD_SHORT_FLAGS_BD_CNT_MASK UINT32_C(0x1f00)
- #define TX_BD_SHORT_FLAGS_BD_CNT_SFT 8
- /*
- * This value is a hint for the length of the entire packet. It is used
- * by the chip to optimize internal processing. The packet will be
- * dropped if the hint is too short. This field is valid only on the
- * first BD of a packet.
- */
- #define TX_BD_SHORT_FLAGS_LHINT_MASK UINT32_C(0x6000)
- #define TX_BD_SHORT_FLAGS_LHINT_SFT 13
- /* indicates packet length < 512B */
- #define TX_BD_SHORT_FLAGS_LHINT_LT512 (UINT32_C(0x0) << 13)
- /* indicates 512 <= packet length < 1KB */
- #define TX_BD_SHORT_FLAGS_LHINT_LT1K (UINT32_C(0x1) << 13)
- /* indicates 1KB <= packet length < 2KB */
- #define TX_BD_SHORT_FLAGS_LHINT_LT2K (UINT32_C(0x2) << 13)
- /* indicates packet length >= 2KB */
- #define TX_BD_SHORT_FLAGS_LHINT_GTE2K (UINT32_C(0x3) << 13)
- #define TX_BD_SHORT_FLAGS_LHINT_LAST TX_BD_SHORT_FLAGS_LHINT_GTE2K
+ #define TX_BD_SHORT_TYPE_MASK UINT32_C(0x3f)
+ #define TX_BD_SHORT_TYPE_SFT 0
/*
- * If set to 1, the device immediately updates the Send Consumer Index
- * after the buffer associated with this descriptor has been transferred
- * via DMA to NIC memory from host memory. An interrupt may or may not
- * be generated according to the state of the interrupt avoidance
- * mechanisms. If this bit is set to 0, then the Consumer Index is only
- * updated as soon as one of the host interrupt coalescing conditions
- * has been met. This bit must be valid on the first BD of a packet.
+ * Indicates that this BD is 16B long and is
+ * used for normal L2 packet transmission.
*/
- #define TX_BD_SHORT_FLAGS_COAL_NOW UINT32_C(0x8000)
+ #define TX_BD_SHORT_TYPE_TX_BD_SHORT UINT32_C(0x0)
/*
- * All bits in this field must be valid on the first BD of a packet.
- * Only the packet_end bit must be valid for the remaining BDs of a
- * packet.
+ * If set to 1, the packet ends with the data in the buffer
+ * pointed to by this descriptor. This flag must be valid on
+ * every BD.
*/
- #define TX_BD_SHORT_FLAGS_MASK UINT32_C(0xffc0)
- #define TX_BD_SHORT_FLAGS_SFT 6
- uint16_t flags_type;
-
+ #define TX_BD_SHORT_FLAGS_PACKET_END UINT32_C(0x40)
+ /*
+ * If set to 1, the device will not generate a completion for
+ * this transmit packet unless there is an error in it's
+ * processing. If this bit is set to 0, then the packet will be
+ * completed normally. This bit must be valid only on the first
+ * BD of a packet.
+ */
+ #define TX_BD_SHORT_FLAGS_NO_CMPL UINT32_C(0x80)
+ /*
+ * This value indicates how many 16B BD locations are consumed
+ * in the ring by this packet. A value of 1 indicates that this
+ * BD is the only BD (and that the it is a short BD). A value of
+ * 3 indicates either 3 short BDs or 1 long BD and one short BD
+ * in the packet. A value of 0 indicates that there are 32 BD
+ * locations in the packet (the maximum). This field is valid
+ * only on the first BD of a packet.
+ */
+ #define TX_BD_SHORT_FLAGS_BD_CNT_MASK UINT32_C(0x1f00)
+ #define TX_BD_SHORT_FLAGS_BD_CNT_SFT 8
+ /*
+ * This value is a hint for the length of the entire packet. It
+ * is used by the chip to optimize internal processing. The
+ * packet will be dropped if the hint is too short. This field
+ * is valid only on the first BD of a packet.
+ */
+ #define TX_BD_SHORT_FLAGS_LHINT_MASK UINT32_C(0x6000)
+ #define TX_BD_SHORT_FLAGS_LHINT_SFT 13
+ /* indicates packet length < 512B */
+ #define TX_BD_SHORT_FLAGS_LHINT_LT512 (UINT32_C(0x0) << 13)
+ /* indicates 512 <= packet length < 1KB */
+ #define TX_BD_SHORT_FLAGS_LHINT_LT1K (UINT32_C(0x1) << 13)
+ /* indicates 1KB <= packet length < 2KB */
+ #define TX_BD_SHORT_FLAGS_LHINT_LT2K (UINT32_C(0x2) << 13)
+ /* indicates packet length >= 2KB */
+ #define TX_BD_SHORT_FLAGS_LHINT_GTE2K (UINT32_C(0x3) << 13)
+ #define TX_BD_SHORT_FLAGS_LHINT_LAST TX_BD_SHORT_FLAGS_LHINT_GTE2K
/*
- * This is the length of the host physical buffer this BD describes in
- * bytes. This field must be valid on all BDs of a packet.
+ * If set to 1, the device immediately updates the Send Consumer
+ * Index after the buffer associated with this descriptor has
+ * been transferred via DMA to NIC memory from host memory. An
+ * interrupt may or may not be generated according to the state
+ * of the interrupt avoidance mechanisms. If this bit is set to
+ * 0, then the Consumer Index is only updated as soon as one of
+ * the host interrupt coalescing conditions has been met. This
+ * bit must be valid on the first BD of a packet.
*/
+ #define TX_BD_SHORT_FLAGS_COAL_NOW UINT32_C(0x8000)
+ /*
+ * All bits in this field must be valid on the first BD of a
+ * packet. Only the packet_end bit must be valid for the
+ * remaining BDs of a packet.
+ */
+ #define TX_BD_SHORT_FLAGS_MASK UINT32_C(0xffc0)
+ #define TX_BD_SHORT_FLAGS_SFT 6
uint16_t len;
/*
- * The opaque data field is pass through to the completion and can be
- * used for any data that the driver wants to associate with the
- * transmit BD. This field must be valid on the first BD of a packet.
+ * This is the length of the host physical buffer this BD
+ * describes in bytes. This field must be valid on all BDs of a
+ * packet.
*/
uint32_t opaque;
-
/*
- * This is the host physical address for the portion of the packet
- * described by this TX BD. This value must be valid on all BDs of a
- * packet.
+ * The opaque data field is pass through to the completion and
+ * can be used for any data that the driver wants to associate
+ * with the transmit BD. This field must be valid on the first
+ * BD of a packet.
*/
uint64_t addr;
+ /*
+ * This is the host physical address for the portion of the
+ * packet described by this TX BD. This value must be valid on
+ * all BDs of a packet.
+ */
} __attribute__((packed));
/* Long TX BD (32 bytes split to 2 16-byte struct) */
struct tx_bd_long {
+ uint16_t flags_type;
/*
- * All bits in this field must be valid on the first BD of a packet.
- * Only the packet_end bit must be valid for the remaining BDs of a
- * packet.
+ * All bits in this field must be valid on the first BD of a
+ * packet. Only the packet_end bit must be valid for the
+ * remaining BDs of a packet.
*/
/* This value identifies the type of buffer descriptor. */
- #define TX_BD_LONG_TYPE_MASK UINT32_C(0x3f)
- #define TX_BD_LONG_TYPE_SFT 0
- /*
- * Indicates that this BD is 32B long and is used for normal L2
- * packet transmission.
- */
- #define TX_BD_LONG_TYPE_TX_BD_LONG (UINT32_C(0x10) << 0)
- /*
- * If set to 1, the packet ends with the data in the buffer pointed to
- * by this descriptor. This flag must be valid on every BD.
- */
- #define TX_BD_LONG_FLAGS_PACKET_END UINT32_C(0x40)
- /*
- * If set to 1, the device will not generate a completion for this
- * transmit packet unless there is an error in it's processing. If this
- * bit is set to 0, then the packet will be completed normally. This bit
- * must be valid only on the first BD of a packet.
- */
- #define TX_BD_LONG_FLAGS_NO_CMPL UINT32_C(0x80)
- /*
- * This value indicates how many 16B BD locations are consumed in the
- * ring by this packet. A value of 1 indicates that this BD is the only
- * BD (and that the it is a short BD). A value of 3 indicates either 3
- * short BDs or 1 long BD and one short BD in the packet. A value of 0
- * indicates that there are 32 BD locations in the packet (the maximum).
- * This field is valid only on the first BD of a packet.
- */
- #define TX_BD_LONG_FLAGS_BD_CNT_MASK UINT32_C(0x1f00)
- #define TX_BD_LONG_FLAGS_BD_CNT_SFT 8
- /*
- * This value is a hint for the length of the entire packet. It is used
- * by the chip to optimize internal processing. The packet will be
- * dropped if the hint is too short. This field is valid only on the
- * first BD of a packet.
- */
- #define TX_BD_LONG_FLAGS_LHINT_MASK UINT32_C(0x6000)
- #define TX_BD_LONG_FLAGS_LHINT_SFT 13
- /* indicates packet length < 512B */
- #define TX_BD_LONG_FLAGS_LHINT_LT512 (UINT32_C(0x0) << 13)
- /* indicates 512 <= packet length < 1KB */
- #define TX_BD_LONG_FLAGS_LHINT_LT1K (UINT32_C(0x1) << 13)
- /* indicates 1KB <= packet length < 2KB */
- #define TX_BD_LONG_FLAGS_LHINT_LT2K (UINT32_C(0x2) << 13)
- /* indicates packet length >= 2KB */
- #define TX_BD_LONG_FLAGS_LHINT_GTE2K (UINT32_C(0x3) << 13)
- #define TX_BD_LONG_FLAGS_LHINT_LAST TX_BD_LONG_FLAGS_LHINT_GTE2K
+ #define TX_BD_LONG_TYPE_MASK UINT32_C(0x3f)
+ #define TX_BD_LONG_TYPE_SFT 0
/*
- * If set to 1, the device immediately updates the Send Consumer Index
- * after the buffer associated with this descriptor has been transferred
- * via DMA to NIC memory from host memory. An interrupt may or may not
- * be generated according to the state of the interrupt avoidance
- * mechanisms. If this bit is set to 0, then the Consumer Index is only
- * updated as soon as one of the host interrupt coalescing conditions
- * has been met. This bit must be valid on the first BD of a packet.
+ * Indicates that this BD is 32B long and is
+ * used for normal L2 packet transmission.
*/
- #define TX_BD_LONG_FLAGS_COAL_NOW UINT32_C(0x8000)
+ #define TX_BD_LONG_TYPE_TX_BD_LONG UINT32_C(0x10)
/*
- * All bits in this field must be valid on the first BD of a packet.
- * Only the packet_end bit must be valid for the remaining BDs of a
- * packet.
+ * If set to 1, the packet ends with the data in the buffer
+ * pointed to by this descriptor. This flag must be valid on
+ * every BD.
*/
- #define TX_BD_LONG_FLAGS_MASK UINT32_C(0xffc0)
- #define TX_BD_LONG_FLAGS_SFT 6
- uint16_t flags_type;
-
+ #define TX_BD_LONG_FLAGS_PACKET_END UINT32_C(0x40)
+ /*
+ * If set to 1, the device will not generate a completion for
+ * this transmit packet unless there is an error in it's
+ * processing. If this bit is set to 0, then the packet will be
+ * completed normally. This bit must be valid only on the first
+ * BD of a packet.
+ */
+ #define TX_BD_LONG_FLAGS_NO_CMPL UINT32_C(0x80)
+ /*
+ * This value indicates how many 16B BD locations are consumed
+ * in the ring by this packet. A value of 1 indicates that this
+ * BD is the only BD (and that the it is a short BD). A value of
+ * 3 indicates either 3 short BDs or 1 long BD and one short BD
+ * in the packet. A value of 0 indicates that there are 32 BD
+ * locations in the packet (the maximum). This field is valid
+ * only on the first BD of a packet.
+ */
+ #define TX_BD_LONG_FLAGS_BD_CNT_MASK UINT32_C(0x1f00)
+ #define TX_BD_LONG_FLAGS_BD_CNT_SFT 8
+ /*
+ * This value is a hint for the length of the entire packet. It
+ * is used by the chip to optimize internal processing. The
+ * packet will be dropped if the hint is too short. This field
+ * is valid only on the first BD of a packet.
+ */
+ #define TX_BD_LONG_FLAGS_LHINT_MASK UINT32_C(0x6000)
+ #define TX_BD_LONG_FLAGS_LHINT_SFT 13
+ /* indicates packet length < 512B */
+ #define TX_BD_LONG_FLAGS_LHINT_LT512 (UINT32_C(0x0) << 13)
+ /* indicates 512 <= packet length < 1KB */
+ #define TX_BD_LONG_FLAGS_LHINT_LT1K (UINT32_C(0x1) << 13)
+ /* indicates 1KB <= packet length < 2KB */
+ #define TX_BD_LONG_FLAGS_LHINT_LT2K (UINT32_C(0x2) << 13)
+ /* indicates packet length >= 2KB */
+ #define TX_BD_LONG_FLAGS_LHINT_GTE2K (UINT32_C(0x3) << 13)
+ #define TX_BD_LONG_FLAGS_LHINT_LAST TX_BD_LONG_FLAGS_LHINT_GTE2K
+ /*
+ * If set to 1, the device immediately updates the Send Consumer
+ * Index after the buffer associated with this descriptor has
+ * been transferred via DMA to NIC memory from host memory. An
+ * interrupt may or may not be generated according to the state
+ * of the interrupt avoidance mechanisms. If this bit is set to
+ * 0, then the Consumer Index is only updated as soon as one of
+ * the host interrupt coalescing conditions has been met. This
+ * bit must be valid on the first BD of a packet.
+ */
+ #define TX_BD_LONG_FLAGS_COAL_NOW UINT32_C(0x8000)
/*
- * This is the length of the host physical buffer this BD describes in
- * bytes. This field must be valid on all BDs of a packet.
+ * All bits in this field must be valid on the first BD of a
+ * packet. Only the packet_end bit must be valid for the
+ * remaining BDs of a packet.
*/
+ #define TX_BD_LONG_FLAGS_MASK UINT32_C(0xffc0)
+ #define TX_BD_LONG_FLAGS_SFT 6
uint16_t len;
-
/*
- * The opaque data field is pass through to the completion and can be
- * used for any data that the driver wants to associate with the
- * transmit BD. This field must be valid on the first BD of a packet.
+ * This is the length of the host physical buffer this BD
+ * describes in bytes. This field must be valid on all BDs of a
+ * packet.
*/
uint32_t opaque;
-
/*
- * This is the host physical address for the portion of the packet
- * described by this TX BD. This value must be valid on all BDs of a
- * packet.
+ * The opaque data field is pass through to the completion and
+ * can be used for any data that the driver wants to associate
+ * with the transmit BD. This field must be valid on the first
+ * BD of a packet.
*/
uint64_t addr;
+ /*
+ * This is the host physical address for the portion of the
+ * packet described by this TX BD. This value must be valid on
+ * all BDs of a packet.
+ */
} __attribute__((packed));
/* last 16 bytes of Long TX BD */
-
struct tx_bd_long_hi {
+ uint16_t lflags;
/*
- * All bits in this field must be valid on the first BD of a packet.
- * Their value on other BDs of the packet will be ignored.
+ * All bits in this field must be valid on the first BD of a
+ * packet. Their value on other BDs of the packet will be
+ * ignored.
*/
/*
- * If set to 1, the controller replaces the TCP/UPD checksum fields of
- * normal TCP/UPD checksum, or the inner TCP/UDP checksum field of the
- * encapsulated TCP/UDP packets with the hardware calculated TCP/UDP
- * checksum for the packet associated with this descriptor. This bit
- * must be valid on the first BD of a packet.
+ * If set to 1, the controller replaces the TCP/UPD checksum
+ * fields of normal TCP/UPD checksum, or the inner TCP/UDP
+ * checksum field of the encapsulated TCP/UDP packets with the
+ * hardware calculated TCP/UDP checksum for the packet
+ * associated with this descriptor. The flag is ignored if the
+ * LSO flag is set. This bit must be valid on the first BD of a
+ * packet.
*/
#define TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM UINT32_C(0x1)
/*
- * If set to 1, the controller replaces the IP checksum of the normal
- * packets, or the inner IP checksum of the encapsulated packets with
- * the hardware calculated IP checksum for the packet associated with
- * this descriptor. This bit must be valid on the first BD of a packet.
- */
- #define TX_BD_LONG_LFLAGS_IP_CHKSUM UINT32_C(0x2)
- /*
- * If set to 1, the controller will not append an Ethernet CRC to the
- * end of the frame. This bit must be valid on the first BD of a packet.
- * Packet must be 64B or longer when this flag is set. It is not useful
- * to use this bit with any form of TX offload such as CSO or LSO. The
- * intent is that the packet from the host already has a valid Ethernet
- * CRC on the packet.
- */
- #define TX_BD_LONG_LFLAGS_NOCRC UINT32_C(0x4)
- /*
- * If set to 1, the device will record the time at which the packet was
- * actually transmitted at the TX MAC. This bit must be valid on the
- * first BD of a packet.
- */
- #define TX_BD_LONG_LFLAGS_STAMP UINT32_C(0x8)
- /*
- * If set to 1, The controller replaces the tunnel IP checksum field
- * with hardware calculated IP checksum for the IP header of the packet
- * associated with this descriptor. In case of VXLAN, the controller
- * also replaces the outer header UDP checksum with hardware calculated
- * UDP checksum for the packet associated with this descriptor.
- */
- #define TX_BD_LONG_LFLAGS_T_IP_CHKSUM UINT32_C(0x10)
- /*
- * If set to 1, the device will treat this packet with LSO(Large Send
- * Offload) processing for both normal or encapsulated packets, which is
- * a form of TCP segmentation. When this bit is 1, the hdr_size and mss
- * fields must be valid. The driver doesn't need to set t_ip_chksum,
- * ip_chksum, and tcp_udp_chksum flags since the controller will replace
- * the appropriate checksum fields for segmented packets. When this bit
- * is 1, the hdr_size and mss fields must be valid.
- */
- #define TX_BD_LONG_LFLAGS_LSO UINT32_C(0x20)
- /*
- * If set to zero when LSO is '1', then the IPID will be treated as a
- * 16b number and will be wrapped if it exceeds a value of 0xffff. If
- * set to one when LSO is '1', then the IPID will be treated as a 15b
- * number and will be wrapped if it exceeds a value 0f 0x7fff.
- */
- #define TX_BD_LONG_LFLAGS_IPID_FMT UINT32_C(0x40)
- /*
- * If set to zero when LSO is '1', then the IPID of the tunnel IP header
- * will not be modified during LSO operations. If set to one when LSO is
- * '1', then the IPID of the tunnel IP header will be incremented for
- * each subsequent segment of an LSO operation.
- */
- #define TX_BD_LONG_LFLAGS_T_IPID UINT32_C(0x80)
- /*
- * If set to '1', then the RoCE ICRC will be appended to the packet.
- * Packet must be a valid RoCE format packet.
- */
- #define TX_BD_LONG_LFLAGS_ROCE_CRC UINT32_C(0x100)
- /*
- * If set to '1', then the FCoE CRC will be appended to the packet.
- * Packet must be a valid FCoE format packet.
- */
- #define TX_BD_LONG_LFLAGS_FCOE_CRC UINT32_C(0x200)
- uint16_t lflags;
-
- /*
- * When LSO is '1', this field must contain the offset of the TCP
- * payload from the beginning of the packet in as 16b words. In case of
- * encapsulated/tunneling packet, this field contains the offset of the
- * inner TCP payload from beginning of the packet as 16-bit words. This
- * value must be valid on the first BD of a packet.
- */
- #define TX_BD_LONG_HDR_SIZE_MASK UINT32_C(0x1ff)
- #define TX_BD_LONG_HDR_SIZE_SFT 0
+ * If set to 1, the controller replaces the IP checksum of the
+ * normal packets, or the inner IP checksum of the encapsulated
+ * packets with the hardware calculated IP checksum for the
+ * packet associated with this descriptor. This bit must be
+ * valid on the first BD of a packet.
+ */
+ #define TX_BD_LONG_LFLAGS_IP_CHKSUM UINT32_C(0x2)
+ /*
+ * If set to 1, the controller will not append an Ethernet CRC
+ * to the end of the frame. This bit must be valid on the first
+ * BD of a packet. Packet must be 64B or longer when this flag
+ * is set. It is not useful to use this bit with any form of TX
+ * offload such as CSO or LSO. The intent is that the packet
+ * from the host already has a valid Ethernet CRC on the packet.
+ */
+ #define TX_BD_LONG_LFLAGS_NOCRC UINT32_C(0x4)
+ /*
+ * If set to 1, the device will record the time at which the
+ * packet was actually transmitted at the TX MAC. This bit must
+ * be valid on the first BD of a packet.
+ */
+ #define TX_BD_LONG_LFLAGS_STAMP UINT32_C(0x8)
+ /*
+ * If set to 1, The controller replaces the tunnel IP checksum
+ * field with hardware calculated IP checksum for the IP header
+ * of the packet associated with this descriptor. For outer UDP
+ * checksum, global outer UDP checksum TE_NIC register needs to
+ * be enabled. If the global outer UDP checksum TE_NIC register
+ * bit is set, outer UDP checksum will be calculated for the
+ * following cases: 1. Packets with tcp_udp_chksum flag set to
+ * offload checksum for inner packet AND the inner packet is
+ * TCP/UDP. If the inner packet is ICMP for example (non-
+ * TCP/UDP), even if the tcp_udp_chksum is set, the outer UDP
+ * checksum will not be calculated. 2. Packets with lso flag set
+ * which implies inner TCP checksum calculation as part of LSO
+ * operation.
+ */
+ #define TX_BD_LONG_LFLAGS_T_IP_CHKSUM UINT32_C(0x10)
+ /*
+ * If set to 1, the device will treat this packet with LSO(Large
+ * Send Offload) processing for both normal or encapsulated
+ * packets, which is a form of TCP segmentation. When this bit
+ * is 1, the hdr_size and mss fields must be valid. The driver
+ * doesn't need to set t_ip_chksum, ip_chksum, and
+ * tcp_udp_chksum flags since the controller will replace the
+ * appropriate checksum fields for segmented packets. When this
+ * bit is 1, the hdr_size and mss fields must be valid.
+ */
+ #define TX_BD_LONG_LFLAGS_LSO UINT32_C(0x20)
+ /*
+ * If set to zero when LSO is '1', then the IPID will be treated
+ * as a 16b number and will be wrapped if it exceeds a value of
+ * 0xffff. If set to one when LSO is '1', then the IPID will be
+ * treated as a 15b number and will be wrapped if it exceeds a
+ * value 0f 0x7fff.
+ */
+ #define TX_BD_LONG_LFLAGS_IPID_FMT UINT32_C(0x40)
+ /*
+ * If set to zero when LSO is '1', then the IPID of the tunnel
+ * IP header will not be modified during LSO operations. If set
+ * to one when LSO is '1', then the IPID of the tunnel IP header
+ * will be incremented for each subsequent segment of an LSO
+ * operation. The flag is ignored if the LSO packet is a normal
+ * (non-tunneled) TCP packet.
+ */
+ #define TX_BD_LONG_LFLAGS_T_IPID UINT32_C(0x80)
+ /*
+ * If set to '1', then the RoCE ICRC will be appended to the
+ * packet. Packet must be a valid RoCE format packet.
+ */
+ #define TX_BD_LONG_LFLAGS_ROCE_CRC UINT32_C(0x100)
+ /*
+ * If set to '1', then the FCoE CRC will be appended to the
+ * packet. Packet must be a valid FCoE format packet.
+ */
+ #define TX_BD_LONG_LFLAGS_FCOE_CRC UINT32_C(0x200)
uint16_t hdr_size;
-
/*
- * This is the MSS value that will be used to do the LSO processing. The
- * value is the length in bytes of the TCP payload for each segment
- * generated by the LSO operation. This value must be valid on the first
+ * When LSO is '1', this field must contain the offset of the
+ * TCP payload from the beginning of the packet in as 16b words.
+ * In case of encapsulated/tunneling packet, this field contains
+ * the offset of the inner TCP payload from beginning of the
+ * packet as 16-bit words. This value must be valid on the first
* BD of a packet.
*/
- #define TX_BD_LONG_MSS_MASK UINT32_C(0x7fff)
- #define TX_BD_LONG_MSS_SFT 0
+ #define TX_BD_LONG_HDR_SIZE_MASK UINT32_C(0x1ff)
+ #define TX_BD_LONG_HDR_SIZE_SFT 0
uint32_t mss;
-
- uint16_t unused_2;
-
/*
- * This value selects a CFA action to perform on the packet. Set this
- * value to zero if no CFA action is desired. This value must be valid
- * on the first BD of a packet.
+ * This is the MSS value that will be used to do the LSO
+ * processing. The value is the length in bytes of the TCP
+ * payload for each segment generated by the LSO operation. This
+ * value must be valid on the first BD of a packet.
*/
+ #define TX_BD_LONG_MSS_MASK UINT32_C(0x7fff)
+ #define TX_BD_LONG_MSS_SFT 0
+ uint16_t unused_2;
uint16_t cfa_action;
-
/*
- * This value is action meta-data that defines CFA edit operations that
- * are done in addition to any action editing.
+ * This value selects a CFA action to perform on the packet. Set
+ * this value to zero if no CFA action is desired. This value
+ * must be valid on the first BD of a packet.
+ */
+ uint32_t cfa_meta;
+ /*
+ * This value is action meta-data that defines CFA edit
+ * operations that are done in addition to any action editing.
*/
/* When key=1, This is the VLAN tag VID value. */
#define TX_BD_LONG_CFA_META_VLAN_VID_MASK UINT32_C(0xfff)
#define TX_BD_LONG_CFA_META_VLAN_VID_SFT 0
/* When key=1, This is the VLAN tag DE value. */
- #define TX_BD_LONG_CFA_META_VLAN_DE UINT32_C(0x1000)
+ #define TX_BD_LONG_CFA_META_VLAN_DE UINT32_C(0x1000)
/* When key=1, This is the VLAN tag PRI value. */
#define TX_BD_LONG_CFA_META_VLAN_PRI_MASK UINT32_C(0xe000)
#define TX_BD_LONG_CFA_META_VLAN_PRI_SFT 13
/* When key=1, This is the VLAN tag TPID select value. */
#define TX_BD_LONG_CFA_META_VLAN_TPID_MASK UINT32_C(0x70000)
#define TX_BD_LONG_CFA_META_VLAN_TPID_SFT 16
- /* 0x88a8 */
+ /* 0x88a8 */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPID88A8 (UINT32_C(0x0) << 16)
- /* 0x8100 */
+ /* 0x8100 */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPID8100 (UINT32_C(0x1) << 16)
- /* 0x9100 */
+ /* 0x9100 */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPID9100 (UINT32_C(0x2) << 16)
- /* 0x9200 */
+ /* 0x9200 */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPID9200 (UINT32_C(0x3) << 16)
- /* 0x9300 */
+ /* 0x9300 */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPID9300 (UINT32_C(0x4) << 16)
- /* Value programmed in CFA VLANTPID register. */
+ /* Value programmed in CFA VLANTPID register. */
#define TX_BD_LONG_CFA_META_VLAN_TPID_TPIDCFG (UINT32_C(0x5) << 16)
- #define TX_BD_LONG_CFA_META_VLAN_TPID_LAST \
- TX_BD_LONG_CFA_META_VLAN_TPID_TPIDCFG
+ #define TX_BD_LONG_CFA_META_VLAN_TPID_LAST \
+ TX_BD_LONG_CFA_META_VLAN_TPID_TPIDCFG
/* When key=1, This is the VLAN tag TPID select value. */
#define TX_BD_LONG_CFA_META_VLAN_RESERVED_MASK UINT32_C(0xff80000)
#define TX_BD_LONG_CFA_META_VLAN_RESERVED_SFT 19
/*
- * This field identifies the type of edit to be performed on the packet.
- * This value must be valid on the first BD of a packet.
+ * This field identifies the type of edit to be performed on the
+ * packet. This value must be valid on the first BD of a packet.
+ */
+ #define TX_BD_LONG_CFA_META_KEY_MASK UINT32_C(0xf0000000)
+ #define TX_BD_LONG_CFA_META_KEY_SFT 28
+ /* No editing */
+ #define TX_BD_LONG_CFA_META_KEY_NONE (UINT32_C(0x0) << 28)
+ /*
+ * - meta[17:16] - TPID select value (0 =
+ * 0x8100). - meta[15:12] - PRI/DE value. -
+ * meta[11:0] - VID value.
*/
- #define TX_BD_LONG_CFA_META_KEY_MASK UINT32_C(0xf0000000)
- #define TX_BD_LONG_CFA_META_KEY_SFT 28
- /* No editing */
- #define TX_BD_LONG_CFA_META_KEY_NONE (UINT32_C(0x0) << 28)
- /*
- * - meta[17:16] - TPID select value (0 = 0x8100). - meta[15:12]
- * - PRI/DE value. - meta[11:0] - VID value.
- */
#define TX_BD_LONG_CFA_META_KEY_VLAN_TAG (UINT32_C(0x1) << 28)
#define TX_BD_LONG_CFA_META_KEY_LAST TX_BD_LONG_CFA_META_KEY_VLAN_TAG
- uint32_t cfa_meta;
} __attribute__((packed));
/* RX Producer Packet BD (16 bytes) */
struct rx_prod_pkt_bd {
+ uint16_t flags_type;
/* This value identifies the type of buffer descriptor. */
- #define RX_PROD_PKT_BD_TYPE_MASK UINT32_C(0x3f)
- #define RX_PROD_PKT_BD_TYPE_SFT 0
- /*
- * Indicates that this BD is 16B long and is an RX Producer (ie.
- * empty) buffer descriptor.
- */
- #define RX_PROD_PKT_BD_TYPE_RX_PROD_PKT (UINT32_C(0x4) << 0)
+ #define RX_PROD_PKT_BD_TYPE_MASK UINT32_C(0x3f)
+ #define RX_PROD_PKT_BD_TYPE_SFT 0
/*
- * If set to 1, the packet will be placed at the address plus 2B. The 2
- * Bytes of padding will be written as zero.
+ * Indicates that this BD is 16B long and is an
+ * RX Producer (ie. empty) buffer descriptor.
*/
+ #define RX_PROD_PKT_BD_TYPE_RX_PROD_PKT UINT32_C(0x4)
/*
- * This is intended to be used when the host buffer is cache-line
- * aligned to produce packets that are easy to parse in host memory
- * while still allowing writes to be cache line aligned.
+ * If set to 1, the packet will be placed at the address plus
+ * 2B. The 2 Bytes of padding will be written as zero.
*/
- #define RX_PROD_PKT_BD_FLAGS_SOP_PAD UINT32_C(0x40)
/*
- * If set to 1, the packet write will be padded out to the nearest
- * cache-line with zero value padding.
+ * This is intended to be used when the host buffer is cache-
+ * line aligned to produce packets that are easy to parse in
+ * host memory while still allowing writes to be cache line
+ * aligned.
*/
+ #define RX_PROD_PKT_BD_FLAGS_SOP_PAD UINT32_C(0x40)
/*
- * If receive buffers start/end on cache-line boundaries, this feature
- * will ensure that all data writes on the PCI bus start/end on cache
- * line boundaries.
+ * If set to 1, the packet write will be padded out to the
+ * nearest cache-line with zero value padding.
*/
- #define RX_PROD_PKT_BD_FLAGS_EOP_PAD UINT32_C(0x80)
/*
- * This value is the number of additional buffers in the ring that
- * describe the buffer space to be consumed for the this packet. If the
- * value is zero, then the packet must fit within the space described by
- * this BD. If this value is 1 or more, it indicates how many additional
- * "buffer" BDs are in the ring immediately following this BD to be used
- * for the same network packet. Even if the packet to be placed does not
- * need all the additional buffers, they will be consumed anyway.
+ * If receive buffers start/end on cache-line boundaries, this
+ * feature will ensure that all data writes on the PCI bus
+ * start/end on cache line boundaries.
+ */
+ #define RX_PROD_PKT_BD_FLAGS_EOP_PAD UINT32_C(0x80)
+ /*
+ * This value is the number of additional buffers in the ring
+ * that describe the buffer space to be consumed for the this
+ * packet. If the value is zero, then the packet must fit within
+ * the space described by this BD. If this value is 1 or more,
+ * it indicates how many additional "buffer" BDs are in the ring
+ * immediately following this BD to be used for the same network
+ * packet. Even if the packet to be placed does not need all the
+ * additional buffers, they will be consumed anyway.
*/
#define RX_PROD_PKT_BD_FLAGS_BUFFERS_MASK UINT32_C(0x300)
#define RX_PROD_PKT_BD_FLAGS_BUFFERS_SFT 8
- #define RX_PROD_PKT_BD_FLAGS_MASK UINT32_C(0xffc0)
- #define RX_PROD_PKT_BD_FLAGS_SFT 6
- uint16_t flags_type;
-
+ #define RX_PROD_PKT_BD_FLAGS_MASK UINT32_C(0xffc0)
+ #define RX_PROD_PKT_BD_FLAGS_SFT 6
+ uint16_t len;
/*
- * This is the length in Bytes of the host physical buffer where data
- * for the packet may be placed in host memory.
+ * This is the length in Bytes of the host physical buffer where
+ * data for the packet may be placed in host memory.
*/
/*
- * While this is a Byte resolution value, it is often advantageous to
- * ensure that the buffers provided end on a host cache line.
+ * While this is a Byte resolution value, it is often
+ * advantageous to ensure that the buffers provided end on a
+ * host cache line.
*/
- uint16_t len;
-
+ uint32_t opaque;
/*
- * The opaque data field is pass through to the completion and can be
- * used for any data that the driver wants to associate with this
- * receive buffer set.
+ * The opaque data field is pass through to the completion and
+ * can be used for any data that the driver wants to associate
+ * with this receive buffer set.
*/
- uint32_t opaque;
-
+ uint64_t addr;
/*
- * This is the host physical address where data for the packet may by
- * placed in host memory.
+ * This is the host physical address where data for the packet
+ * may by placed in host memory.
*/
/*
- * While this is a Byte resolution value, it is often advantageous to
- * ensure that the buffers provide start on a host cache line.
+ * While this is a Byte resolution value, it is often
+ * advantageous to ensure that the buffers provide start on a
+ * host cache line.
*/
- uint64_t addr;
} __attribute__((packed));
/* Completion Ring Structures */
git.droids-corp.org / dpdk.git / commitdiff