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Commit 656493d6 authored by Yuval Mintz's avatar Yuval Mintz Committed by David S. Miller
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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: default avatarYuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: default avatarAriel Elior <ariele@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c6993dfd

drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c

+3 −3
Original line number Diff line number Diff line
@@ -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));