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cxgbe(4): Program the global RSS key once instead of once per ifnet.

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MFC after:	3 days
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2017-04-04 23:14:03 +00:00
parent ba8c8a0ca2
commit 3128b167ed
1 changed files with 12 additions and 9 deletions
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21
sys/dev/cxgbe/t4_main.c
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@ -4223,6 +4223,10 @@ int
adapter_full_init(struct adapter *sc) adapter_full_init(struct adapter *sc)
{ {
int rc, i; int rc, i;
#ifdef RSS
uint32_t raw_rss_key[RSS_KEYSIZE / sizeof(uint32_t)];
uint32_t rss_key[RSS_KEYSIZE / sizeof(uint32_t)];
#endif
ASSERT_SYNCHRONIZED_OP(sc); ASSERT_SYNCHRONIZED_OP(sc);
ADAPTER_LOCK_ASSERT_NOTOWNED(sc); ADAPTER_LOCK_ASSERT_NOTOWNED(sc);
@ -4248,6 +4252,14 @@ adapter_full_init(struct adapter *sc)
taskqueue_start_threads(&sc->tq[i], 1, PI_NET, "%s tq%d", taskqueue_start_threads(&sc->tq[i], 1, PI_NET, "%s tq%d",
device_get_nameunit(sc->dev), i); device_get_nameunit(sc->dev), i);
} }
#ifdef RSS
MPASS(RSS_KEYSIZE == 40);
rss_getkey((void *)&raw_rss_key[0]);
for (i = 0; i < nitems(rss_key); i++) {
rss_key[i] = htobe32(raw_rss_key[nitems(rss_key) - 1 - i]);
}
t4_write_rss_key(sc, &rss_key[0], -1);
#endif
if (!(sc->flags & IS_VF)) if (!(sc->flags & IS_VF))
t4_intr_enable(sc); t4_intr_enable(sc);
@ -4355,8 +4367,6 @@ vi_full_init(struct vi_info *vi)
int nbuckets = rss_getnumbuckets(); int nbuckets = rss_getnumbuckets();
int hashconfig = rss_gethashconfig(); int hashconfig = rss_gethashconfig();
int extra; int extra;
uint32_t raw_rss_key[RSS_KEYSIZE / sizeof(uint32_t)];
uint32_t rss_key[RSS_KEYSIZE / sizeof(uint32_t)];
#endif #endif
ASSERT_SYNCHRONIZED_OP(sc); ASSERT_SYNCHRONIZED_OP(sc);
@ -4386,17 +4396,10 @@ vi_full_init(struct vi_info *vi)
vi->rss_size); vi->rss_size);
} }
#ifdef RSS #ifdef RSS
MPASS(RSS_KEYSIZE == 40);
if (vi->nrxq != nbuckets) { if (vi->nrxq != nbuckets) {
if_printf(ifp, "nrxq (%d) != kernel RSS buckets (%d);" if_printf(ifp, "nrxq (%d) != kernel RSS buckets (%d);"
"performance will be impacted.\n", vi->nrxq, nbuckets); "performance will be impacted.\n", vi->nrxq, nbuckets);
} }
rss_getkey((void *)&raw_rss_key[0]);
for (i = 0; i < nitems(rss_key); i++) {
rss_key[i] = htobe32(raw_rss_key[nitems(rss_key) - 1 - i]);
}
t4_write_rss_key(sc, &rss_key[0], -1);
#endif #endif
rss = malloc(vi->rss_size * sizeof (*rss), M_CXGBE, M_ZERO | M_WAITOK); rss = malloc(vi->rss_size * sizeof (*rss), M_CXGBE, M_ZERO | M_WAITOK);
for (i = 0; i < vi->rss_size;) { for (i = 0; i < vi->rss_size;) {