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qed: Reserve VF feature before PF 

Align the driver feature distribution with the flow utilized
by the management firmware - first reserve L2 queues for
VFs and use all the remaining for the PF.

The current distribution might lead to PFs with an enormous
amount of queues, but at the same time leave us with insufficient
resources for starting all VFs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mintz, Yuval 2017-03-23 15:50:20 +02:00 committed by David S. Miller
parent 810bb1f0d3
commit dec26533ae
1 changed files with 16 additions and 11 deletions
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27
drivers/net/ethernet/qlogic/qed/qed_dev.c
View File

@ -1565,17 +1565,22 @@ static void qed_hw_set_feat(struct qed_hwfn *p_hwfn)
non_l2_sbs = feat_num[QED_RDMA_CNQ];
}
feat_num[QED_PF_L2_QUE] = min_t(u32,
RESC_NUM(p_hwfn, QED_SB) -
non_l2_sbs,
RESC_NUM(p_hwfn, QED_L2_QUEUE));
memset(&sb_cnt_info, 0, sizeof(sb_cnt_info));
qed_int_get_num_sbs(p_hwfn, &sb_cnt_info);
feat_num[QED_VF_L2_QUE] =
min_t(u32,
RESC_NUM(p_hwfn, QED_L2_QUEUE) -
FEAT_NUM(p_hwfn, QED_PF_L2_QUE), sb_cnt_info.sb_iov_cnt);
if (p_hwfn->hw_info.personality == QED_PCI_ETH_ROCE ||
p_hwfn->hw_info.personality == QED_PCI_ETH) {
/* Start by allocating VF queues, then PF's */
memset(&sb_cnt_info, 0, sizeof(sb_cnt_info));
qed_int_get_num_sbs(p_hwfn, &sb_cnt_info);
feat_num[QED_VF_L2_QUE] = min_t(u32,
RESC_NUM(p_hwfn, QED_L2_QUEUE),
sb_cnt_info.sb_iov_cnt);
feat_num[QED_PF_L2_QUE] = min_t(u32,
RESC_NUM(p_hwfn, QED_SB) -
non_l2_sbs,
RESC_NUM(p_hwfn,
QED_L2_QUEUE) -
FEAT_NUM(p_hwfn,
QED_VF_L2_QUE));
}
DP_VERBOSE(p_hwfn,
NETIF_MSG_PROBE,