Author: arybchik Date: Wed Jan 13 06:40:00 2016 New Revision: 293807 URL: https://svnweb.freebsd.org/changeset/base/293807
Log: sfxge: rework RX prefix handling in the common code Submitted by: Andy Moreton <amoreton at solarflare.com> Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 2 days Differential Revision: https://reviews.freebsd.org/D4889 Modified: head/sys/dev/sfxge/common/efx.h head/sys/dev/sfxge/common/efx_impl.h head/sys/dev/sfxge/common/efx_rx.c head/sys/dev/sfxge/common/hunt_impl.h head/sys/dev/sfxge/common/hunt_rx.c Modified: head/sys/dev/sfxge/common/efx.h ============================================================================== --- head/sys/dev/sfxge/common/efx.h Wed Jan 13 06:37:45 2016 (r293806) +++ head/sys/dev/sfxge/common/efx.h Wed Jan 13 06:40:00 2016 (r293807) @@ -1883,7 +1883,7 @@ efx_rx_scale_key_set( __in_ecount(n) uint8_t *key, __in size_t n); -extern uint32_t +extern __checkReturn uint32_t efx_psuedo_hdr_hash_get( __in efx_nic_t *enp, __in efx_rx_hash_alg_t func, Modified: head/sys/dev/sfxge/common/efx_impl.h ============================================================================== --- head/sys/dev/sfxge/common/efx_impl.h Wed Jan 13 06:37:45 2016 (r293806) +++ head/sys/dev/sfxge/common/efx_impl.h Wed Jan 13 06:40:00 2016 (r293807) @@ -166,7 +166,11 @@ typedef struct efx_rx_ops_s { efx_rc_t (*erxo_scale_key_set)(efx_nic_t *, uint8_t *, size_t); efx_rc_t (*erxo_scale_tbl_set)(efx_nic_t *, unsigned int *, size_t); -#endif + uint32_t (*erxo_prefix_hash)(efx_nic_t *, efx_rx_hash_alg_t, + uint8_t *); +#endif /* EFSYS_OPT_RX_SCALE */ + efx_rc_t (*erxo_prefix_pktlen)(efx_nic_t *, uint8_t *, + uint16_t *); void (*erxo_qpost)(efx_rxq_t *, efsys_dma_addr_t *, size_t, unsigned int, unsigned int, unsigned int); Modified: head/sys/dev/sfxge/common/efx_rx.c ============================================================================== --- head/sys/dev/sfxge/common/efx_rx.c Wed Jan 13 06:37:45 2016 (r293806) +++ head/sys/dev/sfxge/common/efx_rx.c Wed Jan 13 06:40:00 2016 (r293807) @@ -75,6 +75,18 @@ falconsiena_rx_scale_tbl_set( __in_ecount(n) unsigned int *table, __in size_t n); +static __checkReturn uint32_t +falconsiena_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer); + +static __checkReturn efx_rc_t +falconsiena_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp); + #endif /* EFSYS_OPT_RX_SCALE */ static void @@ -130,7 +142,9 @@ static efx_rx_ops_t __efx_rx_falcon_ops falconsiena_rx_scale_mode_set, /* erxo_scale_mode_set */ falconsiena_rx_scale_key_set, /* erxo_scale_key_set */ falconsiena_rx_scale_tbl_set, /* erxo_scale_tbl_set */ + falconsiena_rx_prefix_hash, /* erxo_prefix_hash */ #endif + falconsiena_rx_prefix_pktlen, /* erxo_prefix_pktlen */ falconsiena_rx_qpost, /* erxo_qpost */ falconsiena_rx_qpush, /* erxo_qpush */ falconsiena_rx_qflush, /* erxo_qflush */ @@ -151,7 +165,9 @@ static efx_rx_ops_t __efx_rx_siena_ops = falconsiena_rx_scale_mode_set, /* erxo_scale_mode_set */ falconsiena_rx_scale_key_set, /* erxo_scale_key_set */ falconsiena_rx_scale_tbl_set, /* erxo_scale_tbl_set */ + falconsiena_rx_prefix_hash, /* erxo_prefix_hash */ #endif + falconsiena_rx_prefix_pktlen, /* erxo_prefix_pktlen */ falconsiena_rx_qpost, /* erxo_qpost */ falconsiena_rx_qpush, /* erxo_qpush */ falconsiena_rx_qflush, /* erxo_qflush */ @@ -172,7 +188,9 @@ static efx_rx_ops_t __efx_rx_ef10_ops = ef10_rx_scale_mode_set, /* erxo_scale_mode_set */ ef10_rx_scale_key_set, /* erxo_scale_key_set */ ef10_rx_scale_tbl_set, /* erxo_scale_tbl_set */ + ef10_rx_prefix_hash, /* erxo_prefix_hash */ #endif + ef10_rx_prefix_pktlen, /* erxo_prefix_pktlen */ ef10_rx_qpost, /* erxo_qpost */ ef10_rx_qpush, /* erxo_qpush */ ef10_rx_qflush, /* erxo_qflush */ @@ -553,92 +571,29 @@ efx_rx_qdestroy( erxop->erxo_qdestroy(erp); } -/* - * Psuedo-header info for Siena/Falcon. - * - * The psuedo-header is a byte array of one of the forms: - * - * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 - * XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.TT.TT.TT.TT - * XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.LL.LL - * - * where: - * - * TT.TT.TT.TT is a 32-bit Toeplitz hash - * LL.LL is a 16-bit LFSR hash - * - * Hash values are in network (big-endian) byte order. - * - * - * On EF10 the pseudo-header is laid out as: - * (See also SF-109306-TC section 9) - * - * Toeplitz hash (32 bits, little-endian) - * Out-of-band outer VLAN tag - * (16 bits, big-endian, 0 if the packet did not have an outer VLAN tag) - * Out-of-band inner VLAN tag - * (16 bits, big-endian, 0 if the packet did not have an inner VLAN tag) - * Packet length (16 bits, little-endian, may be 0) - * MAC timestamp (32 bits, little-endian, may be 0) - * VLAN tag - * (16 bits, big-endian, 0 if the packet did not have an outer VLAN tag) - * VLAN tag - * (16 bits, big-endian, 0 if the packet did not have an inner VLAN tag) - */ - __checkReturn efx_rc_t efx_psuedo_hdr_pkt_length_get( __in efx_nic_t *enp, __in uint8_t *buffer, - __out uint16_t *pkt_lengthp) + __out uint16_t *lengthp) { - if (enp->en_family != EFX_FAMILY_HUNTINGTON && - enp->en_family != EFX_FAMILY_MEDFORD) { - EFSYS_ASSERT(0); - return (ENOTSUP); - } - - *pkt_lengthp = buffer[8] | (buffer[9] << 8); + efx_rx_ops_t *erxop = enp->en_erxop; - return (0); + return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp)); } #if EFSYS_OPT_RX_SCALE - -uint32_t + __checkReturn uint32_t efx_psuedo_hdr_hash_get( __in efx_nic_t *enp, __in efx_rx_hash_alg_t func, __in uint8_t *buffer) { - if (func == EFX_RX_HASHALG_TOEPLITZ) { - switch (enp->en_family) { - case EFX_FAMILY_FALCON: - case EFX_FAMILY_SIENA: - return ((buffer[12] << 24) | - (buffer[13] << 16) | - (buffer[14] << 8) | - buffer[15]); - case EFX_FAMILY_HUNTINGTON: - case EFX_FAMILY_MEDFORD: - return (buffer[0] | - (buffer[1] << 8) | - (buffer[2] << 16) | - (buffer[3] << 24)); - default: - EFSYS_ASSERT(0); - return (0); - } - } else if (func == EFX_RX_HASHALG_LFSR) { - EFSYS_ASSERT(enp->en_family == EFX_FAMILY_FALCON || - enp->en_family == EFX_FAMILY_SIENA); - return ((buffer[14] << 8) | buffer[15]); - } else { - EFSYS_ASSERT(0); - return (0); - } -} + efx_rx_ops_t *erxop = enp->en_erxop; + EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE); + return (erxop->erxo_prefix_hash(enp, func, buffer)); +} #endif /* EFSYS_OPT_RX_SCALE */ #if EFSYS_OPT_FALCON || EFSYS_OPT_SIENA @@ -1026,6 +981,58 @@ fail1: } #endif +/* + * Falcon/Siena psuedo-header + * -------------------------- + * + * Receive packets are prefixed by an optional 16 byte pseudo-header. + * The psuedo-header is a byte array of one of the forms: + * + * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 + * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT + * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL + * + * where: + * TT.TT.TT.TT Toeplitz hash (32-bit big-endian) + * LL.LL LFSR hash (16-bit big-endian) + */ + +#if EFSYS_OPT_RX_SCALE +static __checkReturn uint32_t +falconsiena_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer) +{ + switch (func) { + case EFX_RX_HASHALG_TOEPLITZ: + return ((buffer[12] << 24) | + (buffer[13] << 16) | + (buffer[14] << 8) | + buffer[15]); + + case EFX_RX_HASHALG_LFSR: + return ((buffer[14] << 8) | buffer[15]); + + default: + EFSYS_ASSERT(0); + return (0); + } +} +#endif /* EFSYS_OPT_RX_SCALE */ + +static __checkReturn efx_rc_t +falconsiena_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp) +{ + /* Not supported by Falcon/Siena hardware */ + EFSYS_ASSERT(0); + return (ENOTSUP); +} + + static void falconsiena_rx_qpost( __in efx_rxq_t *erp, Modified: head/sys/dev/sfxge/common/hunt_impl.h ============================================================================== --- head/sys/dev/sfxge/common/hunt_impl.h Wed Jan 13 06:37:45 2016 (r293806) +++ head/sys/dev/sfxge/common/hunt_impl.h Wed Jan 13 06:40:00 2016 (r293807) @@ -874,6 +874,18 @@ ef10_rx_scale_tbl_set( __in_ecount(n) unsigned int *table, __in size_t n); +extern __checkReturn uint32_t +ef10_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer); + +extern __checkReturn efx_rc_t +ef10_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp); + #endif /* EFSYS_OPT_RX_SCALE */ extern void Modified: head/sys/dev/sfxge/common/hunt_rx.c ============================================================================== --- head/sys/dev/sfxge/common/hunt_rx.c Wed Jan 13 06:37:45 2016 (r293806) +++ head/sys/dev/sfxge/common/hunt_rx.c Wed Jan 13 06:40:00 2016 (r293807) @@ -575,6 +575,65 @@ fail1: } #endif /* EFSYS_OPT_RX_SCALE */ + +/* + * EF10 RX pseudo-header + * --------------------- + * + * Receive packets are prefixed by an (optional) 14 byte pseudo-header: + * + * +00: Toeplitz hash value. + * (32bit little-endian) + * +04: Outer VLAN tag. Zero if the packet did not have an outer VLAN tag. + * (16bit big-endian) + * +06: Inner VLAN tag. Zero if the packet did not have an inner VLAN tag. + * (16bit big-endian) + * +08: Packet Length. Zero if the RX datapath was in cut-through mode. + * (16bit little-endian) + * +10: MAC timestamp. Zero if timestamping is not enabled. + * (32bit little-endian) + * + * See "The RX Pseudo-header" in SF-109306-TC. + */ + + __checkReturn efx_rc_t +ef10_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp) +{ + /* + * The RX pseudo-header contains the packet length, excluding the + * pseudo-header. If the hardware receive datapath was operating in + * cut-through mode then the length in the RX pseudo-header will be + * zero, and the packet length must be obtained from the DMA length + * reported in the RX event. + */ + *lengthp = buffer[8] | (buffer[9] << 8); + return (0); +} + +#if EFSYS_OPT_RX_SCALE + __checkReturn uint32_t +ef10_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer) +{ + switch (func) { + case EFX_RX_HASHALG_TOEPLITZ: + return (buffer[0] | + (buffer[1] << 8) | + (buffer[2] << 16) | + (buffer[3] << 24)); + + default: + EFSYS_ASSERT(0); + return (0); + } +} +#endif /* EFSYS_OPT_RX_SCALE */ + void ef10_rx_qpost( __in efx_rxq_t *erp, _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
