mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
|
From ab1371fec54bdd16b5f6c56c76d817404c696d4b Mon Sep 17 00:00:00 2001
|
||
|
|
From: Camelia Groza <camelia.groza@nxp.com>
|
||
|
|
Date: Wed, 18 Oct 2017 16:38:30 +0300
|
||
|
|
Subject: [PATCH] sdk_dpaa: accept frames on RX even if larger than MTU
|
||
|
|
|
||
|
|
Documentation/networking/netdevices.txt mentions that interfaces must
|
||
|
|
be able to receive frames at least the size of the configured MTU. The
|
||
|
|
behavior for received frames larger than the MTU is unspecified. We have
|
||
|
|
been dropping these frames in software. Remove this behavior and accept
|
||
|
|
them.
|
||
|
|
|
||
|
|
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
|
||
|
|
---
|
||
|
|
drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h | 11 -----------
|
||
|
|
drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 11 -----------
|
||
|
|
2 files changed, 22 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h
|
||
|
|
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h
|
||
|
|
@@ -514,17 +514,6 @@ dpa_fd_offset(const struct qm_fd *fd)
|
||
|
|
return fd->offset;
|
||
|
|
}
|
||
|
|
|
||
|
|
-/* Verifies if the skb length is below the interface MTU */
|
||
|
|
-static inline int dpa_check_rx_mtu(struct sk_buff *skb, int mtu)
|
||
|
|
-{
|
||
|
|
- if (unlikely(skb->len > mtu))
|
||
|
|
- if ((skb->protocol != htons(ETH_P_8021Q))
|
||
|
|
- || (skb->len > mtu + 4))
|
||
|
|
- return -1;
|
||
|
|
-
|
||
|
|
- return 0;
|
||
|
|
-}
|
||
|
|
-
|
||
|
|
static inline uint16_t dpa_get_headroom(struct dpa_buffer_layout_s *bl)
|
||
|
|
{
|
||
|
|
uint16_t headroom;
|
||
|
|
--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
|
||
|
|
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
|
||
|
|
@@ -616,13 +616,6 @@ void __hot _dpa_rx(struct net_device *ne
|
||
|
|
(*count_ptr)--;
|
||
|
|
skb->protocol = eth_type_trans(skb, net_dev);
|
||
|
|
|
||
|
|
- /* IP Reassembled frames are allowed to be larger than MTU */
|
||
|
|
- if (unlikely(dpa_check_rx_mtu(skb, net_dev->mtu) &&
|
||
|
|
- !(fd_status & FM_FD_IPR))) {
|
||
|
|
- percpu_stats->rx_dropped++;
|
||
|
|
- goto drop_bad_frame;
|
||
|
|
- }
|
||
|
|
-
|
||
|
|
skb_len = skb->len;
|
||
|
|
|
||
|
|
#ifdef CONFIG_FSL_DPAA_DBG_LOOP
|
||
|
|
@@ -655,10 +648,6 @@ void __hot _dpa_rx(struct net_device *ne
|
||
|
|
packet_dropped:
|
||
|
|
return;
|
||
|
|
|
||
|
|
-drop_bad_frame:
|
||
|
|
- dev_kfree_skb(skb);
|
||
|
|
- return;
|
||
|
|
-
|
||
|
|
_release_frame:
|
||
|
|
dpa_fd_release(net_dev, fd);
|
||
|
|
}
|