From ffac2027e18f006f42630f2e01a8a9bd8dc664b5 Mon Sep 17 00:00:00 2001 From: Shannon Nelson Date: Tue, 3 Dec 2019 14:17:34 -0800 Subject: [PATCH] ionic: keep users rss hash across lif reset If the user has specified their own RSS hash key, don't lose it across queue resets such as DOWN/UP, MTU change, and number of channels change. This is fixed by moving the key initialization to a little earlier in the lif creation. Also, let's clean up the RSS config a little better on the way down by setting it all to 0. Fixes: aa3198819bea ("ionic: Add RSS support") Signed-off-by: Shannon Nelson Signed-off-by: David S. Miller --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 60fd14df49d7..ef8258713369 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -1381,12 +1381,9 @@ int ionic_lif_rss_config(struct ionic_lif *lif, const u16 types, static int ionic_lif_rss_init(struct ionic_lif *lif) { - u8 rss_key[IONIC_RSS_HASH_KEY_SIZE]; unsigned int tbl_sz; unsigned int i; - netdev_rss_key_fill(rss_key, IONIC_RSS_HASH_KEY_SIZE); - lif->rss_types = IONIC_RSS_TYPE_IPV4 | IONIC_RSS_TYPE_IPV4_TCP | IONIC_RSS_TYPE_IPV4_UDP | @@ -1399,12 +1396,18 @@ static int ionic_lif_rss_init(struct ionic_lif *lif) for (i = 0; i < tbl_sz; i++) lif->rss_ind_tbl[i] = ethtool_rxfh_indir_default(i, lif->nxqs); - return ionic_lif_rss_config(lif, lif->rss_types, rss_key, NULL); + return ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL); } -static int ionic_lif_rss_deinit(struct ionic_lif *lif) +static void ionic_lif_rss_deinit(struct ionic_lif *lif) { - return ionic_lif_rss_config(lif, 0x0, NULL, NULL); + int tbl_sz; + + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + memset(lif->rss_ind_tbl, 0, tbl_sz); + memset(lif->rss_hash_key, 0, IONIC_RSS_HASH_KEY_SIZE); + + ionic_lif_rss_config(lif, 0x0, NULL, NULL); } static void ionic_txrx_disable(struct ionic_lif *lif) @@ -1729,6 +1732,7 @@ static struct ionic_lif *ionic_lif_alloc(struct ionic *ionic, unsigned int index dev_err(dev, "Failed to allocate rss indirection table, aborting\n"); goto err_out_free_qcqs; } + netdev_rss_key_fill(lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE); list_add_tail(&lif->list, &ionic->lifs);