Author: arybchik
Date: Fri Nov 30 07:07:20 2018
New Revision: 341306
URL: https://svnweb.freebsd.org/changeset/base/341306

Log:
  sfxge(4): simplify the code to parse RSS hash type
  
  RSS mode bits can be accessed a lot easier in the hash
  type value provided that the variable type is uint32_t.
  The macro helper can be removed to enhance readability.
  
  Submitted by:   Ivan Malov <ivan.malov at oktetlabs.ru>
  Sponsored by:   Solarflare Communications, Inc.
  Differential Revision:  https://reviews.freebsd.org/D18268

Modified:
  head/sys/dev/sfxge/common/ef10_rx.c
  head/sys/dev/sfxge/common/efx.h

Modified: head/sys/dev/sfxge/common/ef10_rx.c
==============================================================================
--- head/sys/dev/sfxge/common/ef10_rx.c Fri Nov 30 07:07:09 2018        
(r341305)
+++ head/sys/dev/sfxge/common/ef10_rx.c Fri Nov 30 07:07:20 2018        
(r341306)
@@ -404,12 +404,6 @@ efx_mcdi_rss_context_set_flags(
        if (encp->enc_rx_scale_additional_modes_supported == B_FALSE)
                modes = 0;
 
-#define        EXTRACT_RSS_MODE(_type, _class)         \
-       (EFX_EXTRACT_NATIVE(_type, 0, 31,       \
-       EFX_LOW_BIT(EFX_RX_CLASS_##_class),     \
-       EFX_HIGH_BIT(EFX_RX_CLASS_##_class)) &  \
-       EFX_MASK32(EFX_RX_CLASS_##_class))
-
        MCDI_IN_POPULATE_DWORD_10(req, RSS_CONTEXT_SET_FLAGS_IN_FLAGS,
            RSS_CONTEXT_SET_FLAGS_IN_TOEPLITZ_IPV4_EN,
            ((type & type_ipv4) == type_ipv4) ? 1 : 0,
@@ -420,19 +414,21 @@ efx_mcdi_rss_context_set_flags(
            RSS_CONTEXT_SET_FLAGS_IN_TOEPLITZ_TCPV6_EN,
            ((type & type_ipv6_tcp) == type_ipv6_tcp) ? 1 : 0,
            RSS_CONTEXT_SET_FLAGS_IN_TCP_IPV4_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV4_TCP),
+           (modes >> EFX_RX_CLASS_IPV4_TCP_LBN) &
+           EFX_MASK32(EFX_RX_CLASS_IPV4_TCP),
            RSS_CONTEXT_SET_FLAGS_IN_UDP_IPV4_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV4_UDP),
+           (modes >> EFX_RX_CLASS_IPV4_UDP_LBN) &
+           EFX_MASK32(EFX_RX_CLASS_IPV4_UDP),
            RSS_CONTEXT_SET_FLAGS_IN_OTHER_IPV4_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV4),
+           (modes >> EFX_RX_CLASS_IPV4_LBN) & EFX_MASK32(EFX_RX_CLASS_IPV4),
            RSS_CONTEXT_SET_FLAGS_IN_TCP_IPV6_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV6_TCP),
+           (modes >> EFX_RX_CLASS_IPV6_TCP_LBN) &
+           EFX_MASK32(EFX_RX_CLASS_IPV6_TCP),
            RSS_CONTEXT_SET_FLAGS_IN_UDP_IPV6_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV6_UDP),
+           (modes >> EFX_RX_CLASS_IPV6_UDP_LBN) &
+           EFX_MASK32(EFX_RX_CLASS_IPV6_UDP),
            RSS_CONTEXT_SET_FLAGS_IN_OTHER_IPV6_RSS_MODE,
-           EXTRACT_RSS_MODE(modes, IPV6));
-
-#undef EXTRACT_RSS_MODE
+           (modes >> EFX_RX_CLASS_IPV6_LBN) & EFX_MASK32(EFX_RX_CLASS_IPV6));
 
        efx_mcdi_execute(enp, &req);
 

Modified: head/sys/dev/sfxge/common/efx.h
==============================================================================
--- head/sys/dev/sfxge/common/efx.h     Fri Nov 30 07:07:09 2018        
(r341305)
+++ head/sys/dev/sfxge/common/efx.h     Fri Nov 30 07:07:20 2018        
(r341306)
@@ -2295,7 +2295,7 @@ typedef enum efx_rx_hash_alg_e {
  *  - a combination of legacy flags
  *  - a combination of EFX_RX_HASH() flags
  */
-typedef unsigned int efx_rx_hash_type_t;
+typedef uint32_t efx_rx_hash_type_t;
 
 typedef enum efx_rx_hash_support_e {
        EFX_RX_HASH_UNAVAILABLE = 0,    /* Hardware hash not inserted */
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