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authorWaldemar Brodkorb <wbx@openadk.org>2015-09-17 19:45:22 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2015-09-17 19:45:38 +0200
commit13c60d6c3c2989ff18a8964573cf8c5ebc56b57d (patch)
treeaa314e80df2e3bad6223e5fe244905ba090d2d07 /target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch
parentf1fc0a7a49e01b52339a6c2a89efa6144da14461 (diff)
add 4.1.x patches for mikrotik-rb4xx, finetune mini.config, drivers should go into target/linux/config
Diffstat (limited to 'target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch')
-rw-r--r--target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch b/target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch
new file mode 100644
index 000000000..4dbac11ee
--- /dev/null
+++ b/target/mips/mikrotik-rb4xx/patches/4.1.6/0028-ag71xx-workaround-some-link-state-bug.patch
@@ -0,0 +1,39 @@
+From 02dc26588275d19a49d47abf2210c41b071cd796 Mon Sep 17 00:00:00 2001
+From: Phil Sutter <phil@nwl.cc>
+Date: Sat, 28 Jun 2014 17:07:52 +0200
+Subject: [PATCH] ag71xx: workaround some link state bug
+
+This happens when routing 100mbit/s traffic with masquerading, link
+supposedly drops to 10HD for a few seconds leading to the driver
+reinitialising the NIC and therefore causing a throughput drop. Ignoring
+those link changes allows for constant bandwidth, therefore this seems
+not to be a real problem of the hardware but one of an overreacting
+driver.
+---
+ drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c b/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c
+index 9de77e9..a83707e 100644
+--- a/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c
++++ b/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c
+@@ -25,7 +25,15 @@ static void ag71xx_phy_link_adjust(struct net_device *dev)
+ if (phydev->link) {
+ if (ag->duplex != phydev->duplex
+ || ag->speed != phydev->speed) {
+- status_change = 1;
++ /* Completely ignore speed/duplex changes as long
++ * as the link stays up as they're probably spurious
++ * (the internal link should not change any way).
++ *
++ * This is actually a workaround, as the link seems to
++ * drop to 10HD from 1000FD under routing load when at
++ * least masquerading is also in use.
++ */
++ //status_change = 1;
+ }
+ }
+
+--
+1.8.5.3
+