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Apply TX interrupt moderation to all RTL810xE PCIe Fast Ethernet

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controllers. Experimentation with RTL8102E, RTL8103E and RTL8105E
showed dramatic decrement of TX completion interrupts under high TX
load(e.g.  from 147k interrupts/second to 10k interrupts/second)
With this change, TX interrupt moderation is applied to all
controllers except RTL8139C+.
This commit is contained in:
Pyun YongHyeon 2011-01-24 00:01:06 +00:00
parent f7a77f6fd3
commit 7be4de2de7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=217766
1 changed files with 2 additions and 14 deletions
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16
sys/dev/re/if_re.c
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@ -2943,20 +2943,8 @@ re_init_locked(struct rl_softc *sc)
/* Configure interrupt moderation. */
if (sc->rl_type == RL_8169) {
switch (sc->rl_hwrev->rl_rev) {
case RL_HWREV_8100E:
case RL_HWREV_8101E:
case RL_HWREV_8102E:
case RL_HWREV_8102EL:
case RL_HWREV_8102EL_SPIN1:
case RL_HWREV_8103E:
CSR_WRITE_2(sc, RL_INTRMOD, 0);
break;
default:
/* Magic from vendor. */
CSR_WRITE_2(sc, RL_INTRMOD, 0x5100);
break;
}
/* Magic from vendor. */
CSR_WRITE_2(sc, RL_INTRMOD, 0x5100);
}
#ifdef DEVICE_POLLING