bnx2x: Allow VF rss on higher PFs

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>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
index aec5ef2..e42f48d 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
@@ -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));