This is a note to let you know that I've just added the patch titled
octeontx2-pf: Calculate LBK link instead of hardcoding
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
octeontx2-pf-calculate-lbk-link-instead-of-hardcodin.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2feee6ff37720b99b3afe4cba72f65f8ff750041
Author: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Date: Thu Oct 29 10:45:47 2020 +0530
octeontx2-pf: Calculate LBK link instead of hardcoding
[ Upstream commit 8bcf5ced6526e1c4c8a2703f9ca9135fef7409d6 ]
CGX links are followed by LBK links but number of
CGX and LBK links varies between platforms. Hence
get the number of links present in hardware from
AF and use it to calculate LBK link number.
Signed-off-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Signed-off-by: Sunil Goutham <sgoutham@xxxxxxxxxxx>
Signed-off-by: Rakesh Babu <rsaladi2@xxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Stable-dep-of: e26f8eac6bb2 ("octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_ethtool.c")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index b062ed06235d2..3b4530bc30378 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -532,8 +532,10 @@ static int otx2_get_link(struct otx2_nic *pfvf)
link = 4 * ((map >> 8) & 0xF) + ((map >> 4) & 0xF);
}
/* LBK channel */
- if (pfvf->hw.tx_chan_base < SDP_CHAN_BASE)
- link = 12;
+ if (pfvf->hw.tx_chan_base < SDP_CHAN_BASE) {
+ map = pfvf->hw.tx_chan_base & 0x7FF;
+ link = pfvf->hw.cgx_links | ((map >> 8) & 0xF);
+ }
return link;
}
@@ -1519,6 +1521,8 @@ void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf,
pfvf->hw.tx_chan_base = rsp->tx_chan_base;
pfvf->hw.lso_tsov4_idx = rsp->lso_tsov4_idx;
pfvf->hw.lso_tsov6_idx = rsp->lso_tsov6_idx;
+ pfvf->hw.cgx_links = rsp->cgx_links;
+ pfvf->hw.lbk_links = rsp->lbk_links;
}
EXPORT_SYMBOL(mbox_handler_nix_lf_alloc);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index d6253f2a414d3..386cb08497e48 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -197,6 +197,8 @@ struct otx2_hw {
struct otx2_drv_stats drv_stats;
u64 cgx_rx_stats[CGX_RX_STATS_COUNT];
u64 cgx_tx_stats[CGX_TX_STATS_COUNT];
+ u8 cgx_links; /* No. of CGX links present in HW */
+ u8 lbk_links; /* No. of LBK links present in HW */
};
struct otx2_vf_config {
