octeontx2-pf: Reuse PF max mtu value

Reuse the maximum support HW MTU value that is fetch during probe.
Instead of fetching through mbox each time mtu is changed as the
value is fixed for interface.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241023161843.15543-4-gakula@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 7510a918d942c0d1a4bc217af5a7dd1a382e0af1..6e0183f0d5a12fb6784ab16d535d7e9ca98877a8 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -227,7 +227,7 @@ int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
        u16 maxlen;
        int err;
 
-       maxlen = otx2_get_max_mtu(pfvf) + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
+       maxlen = pfvf->hw.max_mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
 
        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_nix_set_hw_frs(&pfvf->mbox);
@@ -236,7 +236,7 @@ int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
                return -ENOMEM;
        }
 
-       req->maxlen = pfvf->netdev->mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
+       req->maxlen = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
 
        /* Use max receive length supported by hardware for loopback devices */
        if (is_otx2_lbkvf(pfvf->pdev))

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index df548aeffecf240797e364367f7c8ae0d17e3120..b36b87dae2cb38c22c304cd6580e275408619542 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -228,6 +228,7 @@ struct otx2_hw {
        u16                     txschq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
        u16                     matchall_ipolicer;
        u32                     dwrr_mtu;
+       u32                     max_mtu;
        u8                      smq_link_type;
 
        /* HW settings, coalescing etc */

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 1185f1bdfa014c0d4787dc3073be305330ff6fff..15ed1305fbf8dac5f84ef9642a184edb43eb20dd 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -3101,6 +3101,7 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
        netdev->min_mtu = OTX2_MIN_MTU;
        netdev->max_mtu = otx2_get_max_mtu(pf);
+       hw->max_mtu = netdev->max_mtu;
 
        /* reset CGX/RPM MAC stats */
        otx2_reset_mac_stats(pf);

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 99fcc5661674bebf20f2f9ac0c6ef74e085b6d6f..79a8acac628340ac745c25c7c02a9a3be9bc3afe 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -671,6 +671,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
        netdev->min_mtu = OTX2_MIN_MTU;
        netdev->max_mtu = otx2_get_max_mtu(vf);
+       hw->max_mtu = netdev->max_mtu;
 
        /* To distinguish, for LBK VFs set netdev name explicitly */
        if (is_otx2_lbkvf(vf->pdev)) {