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bnx2x: Allow VF rss on higher PFs

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bnx2x driver uses incorrect PF identifier to configure (in HW) the VF
interrupt scheme; As a result, in multi-function mode the configuration
for PFs with a high index (4+) will overflow and the PF will erroneously
configure a single ISR scheme for its VFs.
As a result, if such a VF uses multiple queues, interrupt generation will
stop after VF receives an Rx packet or sends a Tx packet on a queue
other than queue[0].

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Mintz 2014-02-05 16:07:12 +02:00 committed by David S. Miller
parent c6993dfd7d
commit 656493d6e7
1 changed files with 3 additions and 3 deletions
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6
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
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@ -1446,12 +1446,12 @@ static void bnx2x_vf_igu_reset(struct bnx2x *bp, struct bnx2x_virtf *vf)
if (vf->cfg_flags & VF_CFG_INT_SIMD)
val |= IGU_VF_CONF_SINGLE_ISR_EN;
val &= ~IGU_VF_CONF_PARENT_MASK;
val |= BP_FUNC(bp) << IGU_VF_CONF_PARENT_SHIFT; /* parent PF */
val |= (BP_ABS_FUNC(bp) >> 1) << IGU_VF_CONF_PARENT_SHIFT;
REG_WR(bp, IGU_REG_VF_CONFIGURATION, val);
DP(BNX2X_MSG_IOV,
"value in IGU_REG_VF_CONFIGURATION of vf %d after write %x\n",
vf->abs_vfid, REG_RD(bp, IGU_REG_VF_CONFIGURATION));
"value in IGU_REG_VF_CONFIGURATION of vf %d after write is 0x%08x\n",
vf->abs_vfid, val);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));