From: Andy Gospodarek <gospo@xxxxxxxxxxxx>
This patch adds a new function that will read pages from the
aggregation ring and create an xdp_buff with frags based on
the entries in the aggregation ring.
Signed-off-by: Andy Gospodarek <gospo@xxxxxxxxxxxx>
Signed-off-by: Michael Chan <michael.chan@xxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 31 +++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 5487d8661f13..65992a33b973 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1131,6 +1131,27 @@ static struct sk_buff *bnxt_rx_agg_pages_skb(struct bnxt *bp,
return skb;
}
+static u32 bnxt_rx_agg_pages_xdp(struct bnxt *bp,
+ struct bnxt_cp_ring_info *cpr,
+ struct xdp_buff *xdp, u16 idx,
+ u32 agg_bufs, bool tpa)
+{
+ struct skb_shared_info *shinfo = xdp_get_shared_info_from_buff(xdp);
+ u32 total_frag_len = 0;
+
+ if (!xdp_buff_has_frags(xdp))
+ shinfo->nr_frags = 0;
+
+ total_frag_len = __bnxt_rx_agg_pages(bp, cpr, shinfo, idx, agg_bufs, tpa);
+
+ if (total_frag_len) {
+ xdp_buff_set_frags_flag(xdp);
+ shinfo->nr_frags = agg_bufs;
+ shinfo->xdp_frags_size = total_frag_len;
+ }
+ return total_frag_len;
+}
+
static int bnxt_agg_bufs_valid(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
u8 agg_bufs, u32 *raw_cons)
{
@@ -1859,6 +1880,16 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
if (bnxt_xdp_attached(bp, rxr)) {
bnxt_xdp_buff_init(bp, rxr, cons, &data_ptr, &len, &xdp);
+ if (agg_bufs) {
+ u32 frag_len = bnxt_rx_agg_pages_xdp(bp, cpr, &xdp,
+ cp_cons, agg_bufs,
+ false);
+ if (!frag_len) {
+ cpr->sw_stats.rx.rx_oom_discards += 1;
+ rc = -ENOMEM;
+ goto next_rx;
+ }
+ }
xdp_active = true;
}
--
2.18.1
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