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sfxge(4): use simpler code to check hash algorithm type

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The API which is used to list supported hash flags verifies
hash algorithm choice before writing the output. This check
is based on a switch() statement which has only two options
and no distinctive actions to be conducted for each of them.
Use simpler code instead of switch() to improve readability.

Submitted by:   Ivan Malov <ivan.malov at oktetlabs.ru>
Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18266
This commit is contained in:
Andrew Rybchenko 2018-11-30 07:06:58 +00:00
parent a8c1489fbb
commit bd1be89ebe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=341304
1 changed files with 13 additions and 26 deletions
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39
sys/dev/sfxge/common/efx_rx.c
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@ -341,6 +341,11 @@ efx_rx_scale_hash_flags_get(
goto fail1;
}
if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0) {
*nflagsp = 0;
return 0;
}
l4 = encp->enc_rx_scale_l4_hash_supported;
additional_modes = encp->enc_rx_scale_additional_modes_supported;
@ -369,32 +374,17 @@ efx_rx_scale_hash_flags_get(
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
switch (hash_alg) {
case EFX_RX_HASHALG_PACKED_STREAM:
if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
break;
/* FALLTHRU */
case EFX_RX_HASHALG_TOEPLITZ:
if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
break;
LIST_FLAGS(entryp, IPV4_TCP, l4, additional_modes);
LIST_FLAGS(entryp, IPV6_TCP, l4, additional_modes);
LIST_FLAGS(entryp, IPV4_TCP, l4, additional_modes);
LIST_FLAGS(entryp, IPV6_TCP, l4, additional_modes);
if (additional_modes) {
LIST_FLAGS(entryp, IPV4_UDP, l4, additional_modes);
LIST_FLAGS(entryp, IPV6_UDP, l4, additional_modes);
}
LIST_FLAGS(entryp, IPV4, B_FALSE, additional_modes);
LIST_FLAGS(entryp, IPV6, B_FALSE, additional_modes);
break;
default:
rc = EINVAL;
goto fail2;
if (additional_modes) {
LIST_FLAGS(entryp, IPV4_UDP, l4, additional_modes);
LIST_FLAGS(entryp, IPV6_UDP, l4, additional_modes);
}
LIST_FLAGS(entryp, IPV4, B_FALSE, additional_modes);
LIST_FLAGS(entryp, IPV6, B_FALSE, additional_modes);
#undef LIST_FLAGS
*nflagsp = (unsigned int)(entryp - flagsp);
@ -402,9 +392,6 @@ efx_rx_scale_hash_flags_get(
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);