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bnxt: XDP multibuffer enablement

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Allow aggregation buffers to be in place in the receive path and
allow XDP programs to be attached when using a larger than 4k MTU.

v3: Add a check to sure XDP program supports multipage packets.

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 03:59:06 -04:00 • committed by David S. Miller
parent a7559bc8c1
commit 9f4b28301c
2 changed files with 4 additions and 4 deletions
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3
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View file

@ -1939,8 +1939,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
xdp_active = true; xdp_active = true;
} }
/* skip running XDP prog if there are aggregation bufs */ if (xdp_active) {
if (!agg_bufs && xdp_active) {
if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) { if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) {
rc = 1; rc = 1;
goto next_rx; goto next_rx;

5
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
View file

@ -387,8 +387,9 @@ static int bnxt_xdp_set(struct bnxt *bp, struct bpf_prog *prog)
int tx_xdp = 0, rc, tc; int tx_xdp = 0, rc, tc;
struct bpf_prog *old; struct bpf_prog *old;
if (prog && bp->dev->mtu > BNXT_MAX_PAGE_MODE_MTU) { if (prog && !prog->aux->xdp_has_frags &&
netdev_warn(dev, "MTU %d larger than largest XDP supported MTU %d.\n", bp->dev->mtu > BNXT_MAX_PAGE_MODE_MTU) {
netdev_warn(dev, "MTU %d larger than %d without XDP frag support.\n",
bp->dev->mtu, BNXT_MAX_PAGE_MODE_MTU); bp->dev->mtu, BNXT_MAX_PAGE_MODE_MTU);
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }