diff mbox series

[net-next,1/2] net: mhi: Allow decoupled MTU/MRU

Message ID 1614613312-24642-1-git-send-email-loic.poulain@linaro.org
State Superseded
Headers show
Series [net-next,1/2] net: mhi: Allow decoupled MTU/MRU | expand

Commit Message

Loic Poulain March 1, 2021, 3:41 p.m. UTC 
If a maximum receive unit (MRU) size is specified, use it for RX
buffers allocation instead of the MTU.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

---
 drivers/net/mhi/mhi.h | 1 +
 drivers/net/mhi/net.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

-- 
2.7.4
diff mbox series

Patch

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 b1769fb..4bef7fe 100644
--- a/drivers/net/mhi/net.c
+++ b/drivers/net/mhi/net.c
@@ -270,10 +270,12 @@  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))