From 0afbfdc0f64a8525624b317a99050082be08ceb2 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Mon, 11 Aug 2025 16:42:10 -0700 Subject: [PATCH] eth: fbnic: support RSS on IPv6 Flow Label Support IPv6 Flow Label hashing. Use both inner and outer IPv6 header's Flow Label if both headers are detected. Flow Label is unlike normal header fields, by enabling it user accepts the unstable hash and possible reordering. Because of that I think it's reasonable to hash over all Flow Labels we can find, even tho we don't hash over all L3 addresses. Signed-off-by: Jakub Kicinski Link: https://patch.msgid.link/20250811234212.580748-3-kuba@kernel.org Signed-off-by: Paolo Abeni --- drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c | 2 +- drivers/net/ethernet/meta/fbnic/fbnic_rpc.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c index dc7ba8d5fc433..461c8661eb934 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c @@ -1310,7 +1310,7 @@ fbnic_get_rss_hash_opts(struct net_device *netdev, #define FBNIC_L2_HASH_OPTIONS \ (RXH_L2DA | RXH_DISCARD) #define FBNIC_L3_HASH_OPTIONS \ - (FBNIC_L2_HASH_OPTIONS | RXH_IP_SRC | RXH_IP_DST) + (FBNIC_L2_HASH_OPTIONS | RXH_IP_SRC | RXH_IP_DST | RXH_IP6_FL) #define FBNIC_L4_HASH_OPTIONS \ (FBNIC_L3_HASH_OPTIONS | RXH_L4_B_0_1 | RXH_L4_B_2_3) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_rpc.c b/drivers/net/ethernet/meta/fbnic/fbnic_rpc.c index 8ff07b5562e3b..a4dc1024c0c2d 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_rpc.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_rpc.c @@ -71,6 +71,8 @@ u16 fbnic_flow_hash_2_rss_en_mask(struct fbnic_net *fbn, int flow_type) rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(IP_DST, IP_DST, flow_hash); rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(L4_B_0_1, L4_SRC, flow_hash); rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(L4_B_2_3, L4_DST, flow_hash); + rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(IP6_FL, OV6_FL_LBL, flow_hash); + rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(IP6_FL, IV6_FL_LBL, flow_hash); return rss_en_mask; } -- 2.51.0