Messages in this thread Patch in this message | | | From | Shinas Rasheed <> | Subject | [PATCH net-next v1] octeon_ep: get max rx packet length from firmware | Date | Tue, 21 Nov 2023 11:12:23 -0800 |
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Fill max rx packet length value from firmware.
Signed-off-by: Shinas Rasheed <srasheed@marvell.com> --- .../marvell/octeon_ep/octep_ctrl_net.c | 18 ++++++++++++++++++ .../marvell/octeon_ep/octep_ctrl_net.h | 9 +++++++++ .../ethernet/marvell/octeon_ep/octep_main.c | 10 +++++++++- 3 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c index 6dd3d03c1c0f..c9fcebb9bd9b 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c @@ -198,6 +198,24 @@ int octep_ctrl_net_set_mac_addr(struct octep_device *oct, int vfid, u8 *addr, return octep_send_mbox_req(oct, &d, wait_for_response); } +int octep_ctrl_net_get_mtu(struct octep_device *oct, int vfid) +{ + struct octep_ctrl_net_wait_data d = {0}; + struct octep_ctrl_net_h2f_req *req; + int err; + + req = &d.data.req; + init_send_req(&d.msg, req, mtu_sz, vfid); + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU; + req->mtu.cmd = OCTEP_CTRL_NET_CMD_GET; + + err = octep_send_mbox_req(oct, &d, true); + if (err < 0) + return err; + + return d.data.resp.mtu.val; +} + int octep_ctrl_net_set_mtu(struct octep_device *oct, int vfid, int mtu, bool wait_for_response) { diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h index 4bb97ad1f1c6..46ddaa5c64d1 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h @@ -282,6 +282,15 @@ int octep_ctrl_net_get_mac_addr(struct octep_device *oct, int vfid, u8 *addr); int octep_ctrl_net_set_mac_addr(struct octep_device *oct, int vfid, u8 *addr, bool wait_for_response); +/** Get max MTU from firmware. + * + * @param oct: non-null pointer to struct octep_device. + * @param vfid: Index of virtual function. + * + * return value: mtu on success, -errno on failure. + */ +int octep_ctrl_net_get_mtu(struct octep_device *oct, int vfid); + /** Set mtu in firmware. * * @param oct: non-null pointer to struct octep_device. diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c index 3cee69b3ac38..f9c539178114 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -1276,6 +1276,7 @@ static int octep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct octep_device *octep_dev = NULL; struct net_device *netdev; + int max_rx_pktlen; int err; err = pci_enable_device(pdev); @@ -1346,8 +1347,15 @@ static int octep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) netdev->hw_features = NETIF_F_SG; netdev->features |= netdev->hw_features; + + max_rx_pktlen = octep_ctrl_net_get_mtu(octep_dev, OCTEP_CTRL_NET_INVALID_VFID); + if (max_rx_pktlen < 0) { + dev_err(&octep_dev->pdev->dev, + "Failed to get max receive packet size; err = %d\n", max_rx_pktlen); + goto register_dev_err; + } netdev->min_mtu = OCTEP_MIN_MTU; - netdev->max_mtu = OCTEP_MAX_MTU; + netdev->max_mtu = max_rx_pktlen - (ETH_HLEN + ETH_FCS_LEN); netdev->mtu = OCTEP_DEFAULT_MTU; err = octep_ctrl_net_get_mac_addr(octep_dev, OCTEP_CTRL_NET_INVALID_VFID, -- 2.25.1
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