[bpf-next V2 PATCH 07/14] bnxt_en: setup xdp_rxq_info
From: Jesper Dangaard Brouer <hidden>
Date: 2017-12-22 17:12:14
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest, xdp (express data path) · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Alexei Starovoitov, Daniel Borkmann, David S. Miller, Jesper Dangaard Brouer, John Fastabend
Driver hook points for xdp_rxq_info: * reg : bnxt_alloc_rx_rings * unreg: bnxt_free_rx_rings This driver should be updated to re-register when changing allocation mode of RX rings. Tested on actual hardware. Cc: Andy Gospodarek <andy@greyhouse.net> Cc: Michael Chan <michael.chan@broadcom.com> Signed-off-by: Jesper Dangaard Brouer <redacted> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 10 ++++++++++ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 ++ drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 1 + 3 files changed, 13 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 1d865ae201db..e380f1a039ca 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -2247,6 +2247,9 @@ static void bnxt_free_rx_rings(struct bnxt *bp) if (rxr->xdp_prog) bpf_prog_put(rxr->xdp_prog); + if (xdp_rxq_info_is_reg(&rxr->xdp_rxq)) + xdp_rxq_info_unreg(&rxr->xdp_rxq); + kfree(rxr->rx_tpa); rxr->rx_tpa = NULL;
@@ -2280,6 +2283,10 @@ static int bnxt_alloc_rx_rings(struct bnxt *bp) ring = &rxr->rx_ring_struct; + rc = xdp_rxq_info_reg(&rxr->xdp_rxq, bp->dev, i); + if (rc < 0) + return rc; + rc = bnxt_alloc_ring(bp, ring); if (rc) return rc;
@@ -2834,6 +2841,9 @@ void bnxt_set_ring_params(struct bnxt *bp) bp->cp_ring_mask = bp->cp_bit - 1; } +/* Changing allocation mode of RX rings. + * TODO: Update when extending xdp_rxq_info to support allocation modes. + */ int bnxt_set_rx_skb_mode(struct bnxt *bp, bool page_mode) { if (page_mode) {
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 5359a1f0045f..2d268fc26f5e 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h@@ -23,6 +23,7 @@ #include <net/devlink.h> #include <net/dst_metadata.h> #include <net/switchdev.h> +#include <net/xdp.h> struct tx_bd { __le32 tx_bd_len_flags_type;
@@ -664,6 +665,7 @@ struct bnxt_rx_ring_info { struct bnxt_ring_struct rx_ring_struct; struct bnxt_ring_struct rx_agg_ring_struct; + struct xdp_rxq_info xdp_rxq; }; struct bnxt_cp_ring_info {
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index 261e5847557a..1389ab5e05df 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c@@ -96,6 +96,7 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, xdp.data = *data_ptr; xdp_set_data_meta_invalid(&xdp); xdp.data_end = *data_ptr + *len; + xdp.rxq = &rxr->xdp_rxq; orig_data = xdp.data; mapping = rx_buf->mapping - bp->rx_dma_offset;