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eth: bnxt: allocate enough buffer space to meet HDS threshold

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Now that we can configure HDS threshold separately from the rx_copybreak
HDS threshold may be higher than rx_copybreak.

We need to make sure that we have enough space for the headers.

Fixes: 6b43673a25 ("bnxt_en: add support for hds-thresh ethtool command")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250119020518.1962249-7-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski
2025-01-18 18:05:16 -08:00
parent 928459bbda
commit bee018052d
1 changed files with 4 additions and 3 deletions
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7
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@@ -4671,9 +4671,10 @@ void bnxt_set_ring_params(struct bnxt *bp)
ALIGN(max(NET_SKB_PAD, XDP_PACKET_HEADROOM), 8) -
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
} else {
rx_size = SKB_DATA_ALIGN(max(BNXT_DEFAULT_RX_COPYBREAK,
bp->rx_copybreak) +
NET_IP_ALIGN);
rx_size = max3(BNXT_DEFAULT_RX_COPYBREAK,
bp->rx_copybreak,
bp->dev->cfg_pending->hds_thresh);
rx_size = SKB_DATA_ALIGN(rx_size + NET_IP_ALIGN);
rx_space = rx_size + NET_SKB_PAD +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
}