[RESEND PATCH net-next 1/2] net: mhi: Allow decoupled MTU/MRU
From: Loic Poulain <hidden>
Date: 2021-03-23 14:37:41
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
If a maximum receive unit (MRU) size is specified, use it for RX buffers allocation instead of the MTU. Signed-off-by: Loic Poulain <redacted> --- drivers/net/mhi/mhi.h | 1 + drivers/net/mhi/net.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/mhi/mhi.h b/drivers/net/mhi/mhi.h
index 12e7407..1d0c499 100644
--- a/drivers/net/mhi/mhi.h
+++ b/drivers/net/mhi/mhi.h@@ -29,6 +29,7 @@ struct mhi_net_dev { struct mhi_net_stats stats; u32 rx_queue_sz; int msg_enable; + unsigned int mru; }; struct mhi_net_proto {
diff --git a/drivers/net/mhi/net.c b/drivers/net/mhi/net.c
index f599608..5ec7a29 100644
--- a/drivers/net/mhi/net.c
+++ b/drivers/net/mhi/net.c@@ -265,10 +265,12 @@ static void mhi_net_rx_refill_work(struct work_struct *work) rx_refill.work); struct net_device *ndev = mhi_netdev->ndev; struct mhi_device *mdev = mhi_netdev->mdev; - int size = READ_ONCE(ndev->mtu); struct sk_buff *skb; + unsigned int size; int err; + size = mhi_netdev->mru ? mhi_netdev->mru : READ_ONCE(ndev->mtu); + while (!mhi_queue_is_full(mdev, DMA_FROM_DEVICE)) { skb = netdev_alloc_skb(ndev, size); if (unlikely(!skb))
--
2.7.4