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Vasundhara Volamdavem330
Vasundhara Volam
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davem330
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bnxt_en: get the reduced max_irqs by the ones used by RDMA
When getting the max rings supported, get the reduced max_irqs by the ones used by RDMA. If the number MSIX is the limiting factor, this bug may cause the max ring count to be higher than it should be when RDMA driver is loaded and may result in ring allocation failures. Fixes: 30f5294 ("bnxt_en: Do not modify max IRQ count after RDMA driver requests/frees IRQs.") Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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  • drivers/net/ethernet/broadcom/bnxt

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‎drivers/net/ethernet/broadcom/bnxt/bnxt.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8622,7 +8622,7 @@ static void _bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx,
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*max_tx = hw_resc->max_tx_rings;
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*max_rx = hw_resc->max_rx_rings;
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*max_cp = min_t(int, bnxt_get_max_func_cp_rings_for_en(bp),
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hw_resc->max_irqs);
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hw_resc->max_irqs - bnxt_get_ulp_msix_num(bp));
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*max_cp = min_t(int, *max_cp, hw_resc->max_stat_ctxs);
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max_ring_grps = hw_resc->max_hw_ring_grps;
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if (BNXT_CHIP_TYPE_NITRO_A0(bp) && BNXT_PF(bp)) {

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