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bnxt: adding bnxt_rx_agg_pages_xdp for aggregated xdp

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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@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Gospodarek 2022-04-08 03:59:00 -04:00 committed by David S. Miller
parent 23e4c0469a
commit 4c6c123c9a
1 changed files with 31 additions and 0 deletions
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31
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -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;
}