diff options
| author | Subbaraya Sundeep <sbhatta@marvell.com> | 2022-01-28 07:11:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-01-28 17:54:24 +0300 |
| commit | a989eb66684da7b51c3b00cb6eb910df1217002c (patch) | |
| tree | dc6dc9003e85694caaa435b039864271d52774d9 /drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c | |
| parent | 4f499742389dee5e5de54e4782aea3e8bcb3131f (diff) | |
| download | linux-a989eb66684da7b51c3b00cb6eb910df1217002c.tar.xz | |
octeontx2-pf: Change receive buffer size using ethtool
ethtool rx-buf-len is for setting receive buffer size,
support setting it via ethtool -G parameter and getting
it via ethtool -g parameter.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c index d85db90632d6..abe5267210ef 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c @@ -371,6 +371,7 @@ static void otx2_get_ringparam(struct net_device *netdev, ring->rx_pending = qs->rqe_cnt ? qs->rqe_cnt : Q_COUNT(Q_SIZE_256); ring->tx_max_pending = Q_COUNT(Q_SIZE_MAX); ring->tx_pending = qs->sqe_cnt ? qs->sqe_cnt : Q_COUNT(Q_SIZE_4K); + kernel_ring->rx_buf_len = pfvf->hw.rbuf_len; } static int otx2_set_ringparam(struct net_device *netdev, @@ -379,6 +380,8 @@ static int otx2_set_ringparam(struct net_device *netdev, struct netlink_ext_ack *extack) { struct otx2_nic *pfvf = netdev_priv(netdev); + u32 rx_buf_len = kernel_ring->rx_buf_len; + u32 old_rx_buf_len = pfvf->hw.rbuf_len; bool if_up = netif_running(netdev); struct otx2_qset *qs = &pfvf->qset; u32 rx_count, tx_count; @@ -386,6 +389,15 @@ static int otx2_set_ringparam(struct net_device *netdev, if (ring->rx_mini_pending || ring->rx_jumbo_pending) return -EINVAL; + /* Hardware supports max size of 32k for a receive buffer + * and 1536 is typical ethernet frame size. + */ + if (rx_buf_len && (rx_buf_len < 1536 || rx_buf_len > 32768)) { + netdev_err(netdev, + "Receive buffer range is 1536 - 32768"); + return -EINVAL; + } + /* Permitted lengths are 16 64 256 1K 4K 16K 64K 256K 1M */ rx_count = ring->rx_pending; /* On some silicon variants a skid or reserved CQEs are @@ -403,7 +415,8 @@ static int otx2_set_ringparam(struct net_device *netdev, Q_COUNT(Q_SIZE_4K), Q_COUNT(Q_SIZE_MAX)); tx_count = Q_COUNT(Q_SIZE(tx_count, 3)); - if (tx_count == qs->sqe_cnt && rx_count == qs->rqe_cnt) + if (tx_count == qs->sqe_cnt && rx_count == qs->rqe_cnt && + rx_buf_len == old_rx_buf_len) return 0; if (if_up) @@ -413,6 +426,8 @@ static int otx2_set_ringparam(struct net_device *netdev, qs->sqe_cnt = tx_count; qs->rqe_cnt = rx_count; + pfvf->hw.rbuf_len = rx_buf_len; + if (if_up) return netdev->netdev_ops->ndo_open(netdev); @@ -1207,6 +1222,7 @@ end: static const struct ethtool_ops otx2_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_MAX_FRAMES, + .supported_ring_params = ETHTOOL_RING_USE_RX_BUF_LEN, .get_link = otx2_get_link, .get_drvinfo = otx2_get_drvinfo, .get_strings = otx2_get_strings, @@ -1326,6 +1342,7 @@ static int otx2vf_get_link_ksettings(struct net_device *netdev, static const struct ethtool_ops otx2vf_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_MAX_FRAMES, + .supported_ring_params = ETHTOOL_RING_USE_RX_BUF_LEN, .get_link = otx2_get_link, .get_drvinfo = otx2vf_get_drvinfo, .get_strings = otx2vf_get_strings, |