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cvmx-wqe.h
/***********************license start*************** * Author: Cavium Networks * * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * * Copyright (c) 2003-2008 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. * * This file is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this file; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * or visit http://www.gnu.org/licenses/. * * This file may also be available under a different license from Cavium. * Contact Cavium Networks for more information ***********************license end**************************************/ /** * * This header file defines the work queue entry (wqe) data structure. * Since this is a commonly used structure that depends on structures * from several hardware blocks, those definitions have been placed * in this file to create a single point of definition of the wqe * format. * Data structures are still named according to the block that they * relate to. * */ #ifndef __CVMX_WQE_H__ #define __CVMX_WQE_H__ #include <asm/octeon/cvmx-packet.h> #define OCT_TAG_TYPE_STRING(x) \ (((x) == CVMX_POW_TAG_TYPE_ORDERED) ? "ORDERED" : \ (((x) == CVMX_POW_TAG_TYPE_ATOMIC) ? "ATOMIC" : \ (((x) == CVMX_POW_TAG_TYPE_NULL) ? "NULL" : \ "NULL_NULL"))) /** * HW decode / err_code in work queue entry */ typedef union { uint64_t u64; /* Use this struct if the hardware determines that the packet is IP */ struct { #ifdef __BIG_ENDIAN_BITFIELD /* HW sets this to the number of buffers used by this packet */ uint64_t bufs:8; /* HW sets to the number of L2 bytes prior to the IP */ uint64_t ip_offset:8; /* set to 1 if we found DSA/VLAN in the L2 */ uint64_t vlan_valid:1; /* Set to 1 if the DSA/VLAN tag is stacked */ uint64_t vlan_stacked:1; uint64_t unassigned:1; /* HW sets to the DSA/VLAN CFI flag (valid when vlan_valid) */ uint64_t vlan_cfi:1; /* HW sets to the DSA/VLAN_ID field (valid when vlan_valid) */ uint64_t vlan_id:12; /* Ring Identifier (if PCIe). Requires PIP_GBL_CTL[RING_EN]=1 */ uint64_t pr:4; uint64_t unassigned2:8; /* the packet needs to be decompressed */ uint64_t dec_ipcomp:1; /* the packet is either TCP or UDP */ uint64_t tcp_or_udp:1; /* the packet needs to be decrypted (ESP or AH) */ uint64_t dec_ipsec:1; /* the packet is IPv6 */ uint64_t is_v6:1; /* * (rcv_error, not_IP, IP_exc, is_frag, L4_error, * software, etc.). */ /* * reserved for software use, hardware will clear on * packet creation. */ uint64_t software:1; /* exceptional conditions below */ /* the receive interface hardware detected an L4 error * (only applies if !is_frag) (only applies if * !rcv_error && !not_IP && !IP_exc && !is_frag) * failure indicated in err_code below, decode: * * - 1 = Malformed L4 * - 2 = L4 Checksum Error: the L4 checksum value is * - 3 = UDP Length Error: The UDP length field would * make the UDP data longer than what remains in * the IP packet (as defined by the IP header * length field). * - 4 = Bad L4 Port: either the source or destination * TCP/UDP port is 0. * - 8 = TCP FIN Only: the packet is TCP and only the * FIN flag set. * - 9 = TCP No Flags: the packet is TCP and no flags * are set. * - 10 = TCP FIN RST: the packet is TCP and both FIN * and RST are set. * - 11 = TCP SYN URG: the packet is TCP and both SYN * and URG are set. * - 12 = TCP SYN RST: the packet is TCP and both SYN * and RST are set. * - 13 = TCP SYN FIN: the packet is TCP and both SYN * and FIN are set. */ uint64_t L4_error:1; /* set if the packet is a fragment */ uint64_t is_frag:1; /* the receive interface hardware detected an IP error * / exception (only applies if !rcv_error && !not_IP) * failure indicated in err_code below, decode: * * - 1 = Not IP: the IP version field is neither 4 nor * 6. * - 2 = IPv4 Header Checksum Error: the IPv4 header * has a checksum violation. * - 3 = IP Malformed Header: the packet is not long * enough to contain the IP header. * - 4 = IP Malformed: the packet is not long enough * to contain the bytes indicated by the IP * header. Pad is allowed. * - 5 = IP TTL Hop: the IPv4 TTL field or the IPv6 * Hop Count field are zero. * - 6 = IP Options */ uint64_t IP_exc:1; /* * Set if the hardware determined that the packet is a * broadcast. */ uint64_t is_bcast:1; /* * St if the hardware determined that the packet is a * multi-cast. */ uint64_t is_mcast:1; /* * Set if the packet may not be IP (must be zero in * this case). */ uint64_t not_IP:1; /* * The receive interface hardware detected a receive * error (must be zero in this case). */ uint64_t rcv_error:1; /* lower err_code = first-level descriptor of the * work */ /* zero for packet submitted by hardware that isn't on * the slow path */ /* type is cvmx_pip_err_t */ uint64_t err_code:8; #else uint64_t err_code:8; uint64_t rcv_error:1; uint64_t not_IP:1; uint64_t is_mcast:1; uint64_t is_bcast:1; uint64_t IP_exc:1; uint64_t is_frag:1; uint64_t L4_error:1; uint64_t software:1; uint64_t is_v6:1; uint64_t dec_ipsec:1; uint64_t tcp_or_udp:1; uint64_t dec_ipcomp:1; uint64_t unassigned2:4; uint64_t unassigned2a:4; uint64_t pr:4; uint64_t vlan_id:12; uint64_t vlan_cfi:1; uint64_t unassigned:1; uint64_t vlan_stacked:1; uint64_t vlan_valid:1; uint64_t ip_offset:8; uint64_t bufs:8; #endif } s; struct { #ifdef __BIG_ENDIAN_BITFIELD uint64_t bufs:8; uint64_t ip_offset:8; uint64_t vlan_valid:1; uint64_t vlan_stacked:1; uint64_t unassigned:1; uint64_t vlan_cfi:1; uint64_t vlan_id:12; uint64_t port:12; /* MAC/PIP port number. */ uint64_t dec_ipcomp:1; uint64_t tcp_or_udp:1; uint64_t dec_ipsec:1; uint64_t is_v6:1; uint64_t software:1; uint64_t L4_error:1; uint64_t is_frag:1; uint64_t IP_exc:1; uint64_t is_bcast:1; uint64_t is_mcast:1; uint64_t not_IP:1; uint64_t rcv_error:1; uint64_t err_code:8; #else uint64_t err_code:8; uint64_t rcv_error:1; uint64_t not_IP:1; uint64_t is_mcast:1; uint64_t is_bcast:1; uint64_t IP_exc:1; uint64_t is_frag:1; uint64_t L4_error:1; uint64_t software:1; uint64_t is_v6:1; uint64_t dec_ipsec:1; uint64_t tcp_or_udp:1; uint64_t dec_ipcomp:1; uint64_t port:12; uint64_t vlan_id:12; uint64_t vlan_cfi:1; uint64_t unassigned:1; uint64_t vlan_stacked:1; uint64_t vlan_valid:1; uint64_t ip_offset:8; uint64_t bufs:8; #endif } s_cn68xx; /* use this to get at the 16 vlan bits */ struct { #ifdef __BIG_ENDIAN_BITFIELD uint64_t unused1:16; uint64_t vlan:16; uint64_t unused2:32; #else uint64_t unused2:32; uint64_t vlan:16; uint64_t unused1:16; #endif } svlan; /* * use this struct if the hardware could not determine that * the packet is ip. */ struct { #ifdef __BIG_ENDIAN_BITFIELD /* * HW sets this to the number of buffers used by this * packet. */ uint64_t bufs:8; uint64_t unused:8; /* set to 1 if we found DSA/VLAN in the L2 */ uint64_t vlan_valid:1; /* Set to 1 if the DSA/VLAN tag is stacked */ uint64_t vlan_stacked:1; uint64_t unassigned:1; /* * HW sets to the DSA/VLAN CFI flag (valid when * vlan_valid) */ uint64_t vlan_cfi:1; /* * HW sets to the DSA/VLAN_ID field (valid when * vlan_valid). */ uint64_t vlan_id:12; /* * Ring Identifier (if PCIe). Requires * PIP_GBL_CTL[RING_EN]=1 */ uint64_t pr:4; uint64_t unassigned2:12; /* * reserved for software use, hardware will clear on * packet creation. */ uint64_t software:1; uint64_t unassigned3:1; /* * set if the hardware determined that the packet is * rarp. */ uint64_t is_rarp:1; /* * set if the hardware determined that the packet is * arp */ uint64_t is_arp:1; /* * set if the hardware determined that the packet is a * broadcast. */ uint64_t is_bcast:1; /* * set if the hardware determined that the packet is a * multi-cast */ uint64_t is_mcast:1; /* * set if the packet may not be IP (must be one in * this case) */ uint64_t not_IP:1; /* The receive interface hardware detected a receive * error. Failure indicated in err_code below, * decode: * * - 1 = partial error: a packet was partially * received, but internal buffering / bandwidth * was not adequate to receive the entire * packet. * - 2 = jabber error: the RGMII packet was too large * and is truncated. * - 3 = overrun error: the RGMII packet is longer * than allowed and had an FCS error. * - 4 = oversize error: the RGMII packet is longer * than allowed. * - 5 = alignment error: the RGMII packet is not an * integer number of bytes * and had an FCS error (100M and 10M only). * - 6 = fragment error: the RGMII packet is shorter * than allowed and had an FCS error. * - 7 = GMX FCS error: the RGMII packet had an FCS * error. * - 8 = undersize error: the RGMII packet is shorter * than allowed. * - 9 = extend error: the RGMII packet had an extend * error. * - 10 = length mismatch error: the RGMII packet had * a length that did not match the length field * in the L2 HDR. * - 11 = RGMII RX error/SPI4 DIP4 Error: the RGMII * packet had one or more data reception errors * (RXERR) or the SPI4 packet had one or more * DIP4 errors. * - 12 = RGMII skip error/SPI4 Abort Error: the RGMII * packet was not large enough to cover the * skipped bytes or the SPI4 packet was * terminated with an About EOPS. * - 13 = RGMII nibble error/SPI4 Port NXA Error: the * RGMII packet had a studder error (data not * repeated - 10/100M only) or the SPI4 packet * was sent to an NXA. * - 16 = FCS error: a SPI4.2 packet had an FCS error. * - 17 = Skip error: a packet was not large enough to * cover the skipped bytes. * - 18 = L2 header malformed: the packet is not long * enough to contain the L2. */ uint64_t rcv_error:1; /* * lower err_code = first-level descriptor of the * work */ /* * zero for packet submitted by hardware that isn't on * the slow path */ /* type is cvmx_pip_err_t (union, so can't use directly */ uint64_t err_code:8; #else uint64_t err_code:8; uint64_t rcv_error:1; uint64_t not_IP:1; uint64_t is_mcast:1; uint64_t is_bcast:1; uint64_t is_arp:1; uint64_t is_rarp:1; uint64_t unassigned3:1; uint64_t software:1; uint64_t unassigned2:4; uint64_t unassigned2a:8; uint64_t pr:4; uint64_t vlan_id:12; uint64_t vlan_cfi:1; uint64_t unassigned:1; uint64_t vlan_stacked:1; uint64_t vlan_valid:1; uint64_t unused:8; uint64_t bufs:8; #endif } snoip; } cvmx_pip_wqe_word2; union cvmx_pip_wqe_word0 { struct { #ifdef __BIG_ENDIAN_BITFIELD /** * raw chksum result generated by the HW */ uint16_t hw_chksum; /** * Field unused by hardware - available for software */ uint8_t unused; /** * Next pointer used by hardware for list maintenance. * May be written/read by HW before the work queue * entry is scheduled to a PP (Only 36 bits used in * Octeon 1) */ uint64_t next_ptr:40; #else uint64_t next_ptr:40; uint8_t unused; uint16_t hw_chksum; #endif } cn38xx; struct { #ifdef __BIG_ENDIAN_BITFIELD uint64_t l4ptr:8; /* 56..63 */ uint64_t unused0:8; /* 48..55 */ uint64_t l3ptr:8; /* 40..47 */ uint64_t l2ptr:8; /* 32..39 */ uint64_t unused1:18; /* 14..31 */ uint64_t bpid:6; /* 8..13 */ uint64_t unused2:2; /* 6..7 */ uint64_t pknd:6; /* 0..5 */ #else uint64_t pknd:6; /* 0..5 */ uint64_t unused2:2; /* 6..7 */ uint64_t bpid:6; /* 8..13 */ uint64_t unused1:18; /* 14..31 */ uint64_t l2ptr:8; /* 32..39 */ uint64_t l3ptr:8; /* 40..47 */ uint64_t unused0:8; /* 48..55 */ uint64_t l4ptr:8; /* 56..63 */ #endif } cn68xx; }; union cvmx_wqe_word0 { uint64_t u64; union cvmx_pip_wqe_word0 pip; }; union cvmx_wqe_word1 { uint64_t u64; struct { #ifdef __BIG_ENDIAN_BITFIELD uint64_t len:16; uint64_t varies:14; /** * the type of the tag (ORDERED, ATOMIC, NULL) */ uint64_t tag_type:2; uint64_t tag:32; #else uint64_t tag:32; uint64_t tag_type:2; uint64_t varies:14; uint64_t len:16; #endif }; struct { #ifdef __BIG_ENDIAN_BITFIELD uint64_t len:16; uint64_t zero_0:1; /** * HW sets this to what it thought the priority of * the input packet was */ uint64_t qos:3; uint64_t zero_1:1; /** * the group that the work queue entry will be scheduled to */ uint64_t grp:6; uint64_t zero_2:3; uint64_t tag_type:2; uint64_t tag:32; #else uint64_t tag:32; uint64_t tag_type:2; uint64_t zero_2:3; uint64_t grp:6; uint64_t zero_1:1; uint64_t qos:3; uint64_t zero_0:1; uint64_t len:16; #endif } cn68xx; struct { #ifdef __BIG_ENDIAN_BITFIELD /** * HW sets to the total number of bytes in the packet */ uint64_t len:16; /** * HW sets this to input physical port */ uint64_t ipprt:6; /** * HW sets this to what it thought the priority of * the input packet was */ uint64_t qos:3; /** * the group that the work queue entry will be scheduled to */ uint64_t grp:4; /** * the type of the tag (ORDERED, ATOMIC, NULL) */ uint64_t tag_type:3; /** * the synchronization/ordering tag */ uint64_t tag:32; #else uint64_t tag:32; uint64_t tag_type:2; uint64_t zero_2:1; uint64_t grp:4; uint64_t qos:3; uint64_t ipprt:6; uint64_t len:16; #endif } cn38xx; }; /** * Work queue entry format * * must be 8-byte aligned */ struct cvmx_wqe { /***************************************************************** * WORD 0 * HW WRITE: the following 64 bits are filled by HW when a packet arrives */ union cvmx_wqe_word0 word0; /***************************************************************** * WORD 1 * HW WRITE: the following 64 bits are filled by HW when a packet arrives */ union cvmx_wqe_word1 word1; /** * WORD 2 HW WRITE: the following 64-bits are filled in by * hardware when a packet arrives This indicates a variety of * status and error conditions. */ cvmx_pip_wqe_word2 word2; /** * Pointer to the first segment of the packet. */ union cvmx_buf_ptr packet_ptr; /** * HW WRITE: octeon will fill in a programmable amount from the * packet, up to (at most, but perhaps less) the amount * needed to fill the work queue entry to 128 bytes * * If the packet is recognized to be IP, the hardware starts * (except that the IPv4 header is padded for appropriate * alignment) writing here where the IP header starts. If the * packet is not recognized to be IP, the hardware starts * writing the beginning of the packet here. */ uint8_t packet_data[96]; /** * If desired, SW can make the work Q entry any length. For the * purposes of discussion here, Assume 128B always, as this is all that * the hardware deals with. * */ } CVMX_CACHE_LINE_ALIGNED; static inline int cvmx_wqe_get_port(struct cvmx_wqe *work) { int port; if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) port = work->word2.s_cn68xx.port; else port = work->word1.cn38xx.ipprt; return port; } static inline void cvmx_wqe_set_port(struct cvmx_wqe *work, int port) { if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) work->word2.s_cn68xx.port = port; else work->word1.cn38xx.ipprt = port; } static inline int cvmx_wqe_get_grp(struct cvmx_wqe *work) { int grp; if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) grp = work->word1.cn68xx.grp; else grp = work->word1.cn38xx.grp; return grp; } static inline void cvmx_wqe_set_grp(struct cvmx_wqe *work, int grp) { if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) work->word1.cn68xx.grp = grp; else work->word1.cn38xx.grp = grp; } static inline int cvmx_wqe_get_qos(struct cvmx_wqe *work) { int qos; if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) qos = work->word1.cn68xx.qos; else qos = work->word1.cn38xx.qos; return qos; } static inline void cvmx_wqe_set_qos(struct cvmx_wqe *work, int qos) { if (octeon_has_feature(OCTEON_FEATURE_CN68XX_WQE)) work->word1.cn68xx.qos = qos; else work->word1.cn38xx.qos = qos; } #endif /* __CVMX_WQE_H__ */
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