diff options
| author | Nithin Dabilpuram <ndabilpuram@marvell.com> | 2021-08-25 11:16:21 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-25 12:05:54 +0100 |
| commit | 1c74b89171c39eabc0faba7eb0500c3d73a0e1d1 (patch) | |
| tree | b7a87780c3cbbf08114e3b0c91075cb6950bd506 /drivers/net/ethernet/marvell/octeontx2/af/rvu.h | |
| parent | 906999c9b653dc27d22d9a7f53a5a6637c0e670e (diff) | |
octeontx2-af: Wait for TX link idle for credits change
NIX_AF_TX_LINKX_NORM_CREDIT holds running counter of
tx credits available per link. But, tx credits should be
configured based on MTU config. So MTU change needs tx
credit count update.
An issue exists whereby when both PF & VF are enabled and
PF traffic is flowing, if VF requests for MTU update,
updating the NORM_CREDIT register will lead to corruption
of credit count and subsequent deadlock of tx link as
the NORM_CREDIT register holds running count.
This patch provides workaround by pausing link traffic
using NIX_AF_TL1X_SW_XOFF, waiting for existing packets to
drain, and used credits be returned before updating new
credit count.
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rvu.h')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h index d88f595e63b0..d86c6b366547 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h @@ -314,6 +314,7 @@ struct nix_hw { struct nix_lso lso; struct nix_txvlan txvlan; struct nix_ipolicer *ipolicer; + u64 *tx_credits; }; /* RVU block's capabilities or functionality, |