[PATCH] e1000: Added disable packet split capability

Adds the ability to disability packet split at compile time and use the legacy receive path on PCI express hardware.  Made this a CONFIG option and modified the Kconfig, to reflect the new option.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/arch/arm/configs/ep80219_defconfig b/arch/arm/configs/ep80219_defconfig
index fbe312e..3c73b70 100644 (file)
--- a/arch/arm/configs/ep80219_defconfig
+++ b/arch/arm/configs/ep80219_defconfig
@@ -522,6 +522,7 @@ CONFIG_E100=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/arm/configs/iq31244_defconfig b/arch/arm/configs/iq31244_defconfig
index c07628c..3246716 100644 (file)
--- a/arch/arm/configs/iq31244_defconfig
+++ b/arch/arm/configs/iq31244_defconfig
@@ -493,6 +493,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/arm/configs/iq80321_defconfig b/arch/arm/configs/iq80321_defconfig
index 18fa161..b000da7 100644 (file)
--- a/arch/arm/configs/iq80321_defconfig
+++ b/arch/arm/configs/iq80321_defconfig
@@ -415,6 +415,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/arm/configs/iq80331_defconfig b/arch/arm/configs/iq80331_defconfig
index f50035d..46c79e1 100644 (file)
--- a/arch/arm/configs/iq80331_defconfig
+++ b/arch/arm/configs/iq80331_defconfig
@@ -496,6 +496,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/arm/configs/iq80332_defconfig b/arch/arm/configs/iq80332_defconfig
index 18b3f37..11959b7 100644 (file)
--- a/arch/arm/configs/iq80332_defconfig
+++ b/arch/arm/configs/iq80332_defconfig
@@ -496,6 +496,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index 6a431b9..3cbe6e9 100644 (file)
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -644,6 +644,8 @@ CONFIG_8139TOO_PIO=y
 # CONFIG_ACENIC is not set
 # CONFIG_DL2K is not set
 # CONFIG_E1000 is not set
+# CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 1d07d80..991c07b 100644 (file)
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -557,6 +557,7 @@ CONFIG_E100=m
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
index b1e8f09..6859119 100644 (file)
--- a/arch/ia64/configs/tiger_defconfig
+++ b/arch/ia64/configs/tiger_defconfig
@@ -565,6 +565,7 @@ CONFIG_E100=m
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
index 0856ca6..53899dc 100644 (file)
--- a/arch/ia64/configs/zx1_defconfig
+++ b/arch/ia64/configs/zx1_defconfig
@@ -548,6 +548,7 @@ CONFIG_E100=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ia64/defconfig b/arch/ia64/defconfig
index 275a26c..dcbc78a 100644 (file)
--- a/arch/ia64/defconfig
+++ b/arch/ia64/defconfig
@@ -565,6 +565,7 @@ CONFIG_E100=m
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/parisc/configs/a500_defconfig b/arch/parisc/configs/a500_defconfig
index 955ef50..959ad3c 100644 (file)
--- a/arch/parisc/configs/a500_defconfig
+++ b/arch/parisc/configs/a500_defconfig
@@ -602,6 +602,7 @@ CONFIG_ACENIC_OMIT_TIGON_I=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=m
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/parisc/configs/c3000_defconfig b/arch/parisc/configs/c3000_defconfig
index 9d86b6b..0b1c8c1 100644 (file)
--- a/arch/parisc/configs/c3000_defconfig
+++ b/arch/parisc/configs/c3000_defconfig
@@ -626,6 +626,7 @@ CONFIG_ACENIC=m
 # CONFIG_DL2K is not set
 CONFIG_E1000=m
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig
index b657f7e..063b84f 100644 (file)
--- a/arch/powerpc/configs/cell_defconfig
+++ b/arch/powerpc/configs/cell_defconfig
@@ -533,6 +533,7 @@ CONFIG_MII=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=m
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig
index 3c22ccb..d6fed3f 100644 (file)
--- a/arch/powerpc/configs/g5_defconfig
+++ b/arch/powerpc/configs/g5_defconfig
@@ -675,6 +675,7 @@ CONFIG_ACENIC_OMIT_TIGON_I=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/iseries_defconfig b/arch/powerpc/configs/iseries_defconfig
index 751a622..c775027 100644 (file)
--- a/arch/powerpc/configs/iseries_defconfig
+++ b/arch/powerpc/configs/iseries_defconfig
@@ -567,6 +567,7 @@ CONFIG_ACENIC=m
 # CONFIG_DL2K is not set
 CONFIG_E1000=m
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 07b6d3d..68194c0 100644 (file)
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -454,6 +454,7 @@ CONFIG_AMD8111_ETH=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index 0b2b55a..6f6c6be 100644 (file)
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -724,6 +724,7 @@ CONFIG_ACENIC_OMIT_TIGON_I=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index a50ce0f..aa9893a 100644 (file)
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -671,6 +671,7 @@ CONFIG_ACENIC_OMIT_TIGON_I=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ppc/configs/bamboo_defconfig b/arch/ppc/configs/bamboo_defconfig
index 0ba4e70..41fd393 100644 (file)
--- a/arch/ppc/configs/bamboo_defconfig
+++ b/arch/ppc/configs/bamboo_defconfig
@@ -499,6 +499,7 @@ CONFIG_NATSEMI=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ppc/configs/katana_defconfig b/arch/ppc/configs/katana_defconfig
index 0f3bb9a..7311fe6 100644 (file)
--- a/arch/ppc/configs/katana_defconfig
+++ b/arch/ppc/configs/katana_defconfig
@@ -488,6 +488,7 @@ CONFIG_E100=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ppc/configs/mpc834x_sys_defconfig b/arch/ppc/configs/mpc834x_sys_defconfig
index 673dc64..b96a6d6 100644 (file)
--- a/arch/ppc/configs/mpc834x_sys_defconfig
+++ b/arch/ppc/configs/mpc834x_sys_defconfig
@@ -402,6 +402,7 @@ CONFIG_E100=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/ppc/configs/power3_defconfig b/arch/ppc/configs/power3_defconfig
index 93da595..a1ef929 100644 (file)
--- a/arch/ppc/configs/power3_defconfig
+++ b/arch/ppc/configs/power3_defconfig
@@ -442,6 +442,7 @@ CONFIG_E100=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index a3fb337..92b2fb6 100644 (file)
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -529,6 +529,7 @@ CONFIG_NET_PCI=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=m
 CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_MYRI_SBUS is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set

diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig
index 5231fe8..09a3eb7 100644 (file)
--- a/arch/x86_64/defconfig
+++ b/arch/x86_64/defconfig
@@ -646,6 +646,7 @@ CONFIG_8139TOO=y
 # CONFIG_DL2K is not set
 CONFIG_E1000=y
 # CONFIG_E1000_NAPI is not set
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
 # CONFIG_NS83820 is not set
 # CONFIG_HAMACHI is not set
 # CONFIG_YELLOWFIN is not set

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 1421941..0c69918 100644 (file)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1914,6 +1914,15 @@ config E1000_NAPI
 
          If in doubt, say N.
 
+config E1000_DISABLE_PACKET_SPLIT
+       bool "Disable Packet Split for PCI express adapters"
+       depends on E1000
+       help
+         Say Y here if you want to use the legacy receive path for PCI express
+         hadware.
+
+         If in doubt, say N.
+
 source "drivers/net/ixp2000/Kconfig"
 
 config MYRI_SBUS

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index d0a5d16..73b2a7b 100644 (file)
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1621,7 +1621,7 @@ e1000_setup_rctl(struct e1000_adapter *adapter)
 {
        uint32_t rctl, rfctl;
        uint32_t psrctl = 0;
-#ifdef CONFIG_E1000_PACKET_SPLIT
+#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
        uint32_t pages = 0;
 #endif
 
@@ -1672,7 +1672,7 @@ e1000_setup_rctl(struct e1000_adapter *adapter)
                }
        }
 
-#ifdef CONFIG_E1000_PACKET_SPLIT
+#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
        /* 82571 and greater support packet-split where the protocol
         * header is placed in skb->data and the packet data is
         * placed in pages hanging off of skb_shinfo(skb)->nr_frags.