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Message-ID: <168003456323.3027256.2973825783029955917.stgit@firesoul> Date: Tue, 28 Mar 2023 22:16:03 +0200 From: Jesper Dangaard Brouer <brouer@...hat.com> To: bpf@...r.kernel.org Cc: Jesper Dangaard Brouer <brouer@...hat.com>, netdev@...r.kernel.org, Stanislav Fomichev <sdf@...gle.com>, martin.lau@...nel.org, ast@...nel.org, daniel@...earbox.net, alexandr.lobakin@...el.com, larysa.zaremba@...el.com, xdp-hints@...-project.net, anthony.l.nguyen@...el.com, yoong.siang.song@...el.com, boon.leong.ong@...el.com, intel-wired-lan@...ts.osuosl.org, pabeni@...hat.com, jesse.brandeburg@...el.com, kuba@...nel.org, edumazet@...gle.com, john.fastabend@...il.com, hawk@...nel.org, davem@...emloft.net Subject: [PATCH bpf RFC 2/4] igc: bpf_xdp_metadata_rx_hash return xdp rss hash type Update API for bpf_xdp_metadata_rx_hash() by returning xdp rss hash type via mapping table. Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com> --- drivers/net/ethernet/intel/igc/igc_main.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index b382476f347c..a14f0597524a 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -6496,6 +6496,26 @@ static int igc_xdp_rx_timestamp(const struct xdp_md *_ctx, u64 *timestamp) return -ENODATA; } +/* Mapping HW RSS Type to enum xdp_rss_hash_type */ +enum xdp_rss_hash_type igc_xdp_rss_type[IGC_RSS_TYPE_MAX_TABLE] = { + [IGC_RSS_TYPE_NO_HASH] = XDP_RSS_TYPE_L2, + [IGC_RSS_TYPE_HASH_TCP_IPV4] = XDP_RSS_TYPE_L4_IPV4_TCP, + [IGC_RSS_TYPE_HASH_IPV4] = XDP_RSS_TYPE_L3_IPV4, + [IGC_RSS_TYPE_HASH_TCP_IPV6] = XDP_RSS_TYPE_L4_IPV6_TCP, + [IGC_RSS_TYPE_HASH_IPV6_EX] = XDP_RSS_TYPE_L3_IPV6_EX, + [IGC_RSS_TYPE_HASH_IPV6] = XDP_RSS_TYPE_L3_IPV6, + [IGC_RSS_TYPE_HASH_TCP_IPV6_EX] = XDP_RSS_TYPE_L4_IPV6_TCP_EX, + [IGC_RSS_TYPE_HASH_UDP_IPV4] = XDP_RSS_TYPE_L4_IPV4_UDP, + [IGC_RSS_TYPE_HASH_UDP_IPV6] = XDP_RSS_TYPE_L4_IPV6_UDP, + [IGC_RSS_TYPE_HASH_UDP_IPV6_EX] = XDP_RSS_TYPE_L4_IPV6_UDP_EX, + [10] = XDP_RSS_TYPE_NONE, /* RSS Type above 9 "Reserved" by HW */ + [11] = XDP_RSS_TYPE_NONE, /* keep array sized for SW bit-mask */ + [12] = XDP_RSS_TYPE_NONE, /* to handle future HW revisons */ + [13] = XDP_RSS_TYPE_NONE, + [14] = XDP_RSS_TYPE_NONE, + [15] = XDP_RSS_TYPE_NONE, +}; + static int igc_xdp_rx_hash(const struct xdp_md *_ctx, u32 *hash) { const struct igc_xdp_buff *ctx = (void *)_ctx; @@ -6505,7 +6525,7 @@ static int igc_xdp_rx_hash(const struct xdp_md *_ctx, u32 *hash) *hash = le32_to_cpu(ctx->rx_desc->wb.lower.hi_dword.rss); - return 0; + return igc_xdp_rss_type[igc_rss_type(ctx->rx_desc)]; } const struct xdp_metadata_ops igc_xdp_metadata_ops = {
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