diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/dsa/marvell.txt | 48 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/net/renesas,ravb.txt | 6 | ||||
| -rw-r--r-- | Documentation/networking/segmentation-offloads.txt | 18 |
3 files changed, 44 insertions, 28 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/marvell.txt b/Documentation/devicetree/bindings/net/dsa/marvell.txt index 1d4d0f49c9d0..8c033d48e2ba 100644 --- a/Documentation/devicetree/bindings/net/dsa/marvell.txt +++ b/Documentation/devicetree/bindings/net/dsa/marvell.txt @@ -50,14 +50,15 @@ Example: compatible = "marvell,mv88e6085"; reg = <0>; reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>; - }; - mdio { - #address-cells = <1>; - #size-cells = <0>; - switch1phy0: switch1phy0@0 { - reg = <0>; - interrupt-parent = <&switch0>; - interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + switch1phy0: switch1phy0@0 { + reg = <0>; + interrupt-parent = <&switch0>; + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + }; }; }; }; @@ -74,23 +75,24 @@ Example: compatible = "marvell,mv88e6390"; reg = <0>; reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>; - }; - mdio { - #address-cells = <1>; - #size-cells = <0>; - switch1phy0: switch1phy0@0 { - reg = <0>; - interrupt-parent = <&switch0>; - interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + switch1phy0: switch1phy0@0 { + reg = <0>; + interrupt-parent = <&switch0>; + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + }; }; - }; - mdio1 { - compatible = "marvell,mv88e6xxx-mdio-external"; - #address-cells = <1>; - #size-cells = <0>; - switch1phy9: switch1phy0@9 { - reg = <9>; + mdio1 { + compatible = "marvell,mv88e6xxx-mdio-external"; + #address-cells = <1>; + #size-cells = <0>; + switch1phy9: switch1phy0@9 { + reg = <9>; + }; }; }; }; diff --git a/Documentation/devicetree/bindings/net/renesas,ravb.txt b/Documentation/devicetree/bindings/net/renesas,ravb.txt index 92fd4b2f17b2..b4dc455eb155 100644 --- a/Documentation/devicetree/bindings/net/renesas,ravb.txt +++ b/Documentation/devicetree/bindings/net/renesas,ravb.txt @@ -27,7 +27,11 @@ Required properties: SoC-specific version corresponding to the platform first followed by the generic version. -- reg: offset and length of (1) the register block and (2) the stream buffer. +- reg: Offset and length of (1) the register block and (2) the stream buffer. + The region for the register block is mandatory. + The region for the stream buffer is optional, as it is only present on + R-Car Gen2 and RZ/G1 SoCs, and on R-Car H3 (R8A7795), M3-W (R8A7796), + and M3-N (R8A77965). - interrupts: A list of interrupt-specifiers, one for each entry in interrupt-names. If interrupt-names is not present, an interrupt specifier diff --git a/Documentation/networking/segmentation-offloads.txt b/Documentation/networking/segmentation-offloads.txt index d47480b61ac6..aca542ec125c 100644 --- a/Documentation/networking/segmentation-offloads.txt +++ b/Documentation/networking/segmentation-offloads.txt @@ -20,8 +20,8 @@ TCP Segmentation Offload TCP segmentation allows a device to segment a single frame into multiple frames with a data payload size specified in skb_shinfo()->gso_size. -When TCP segmentation requested the bit for either SKB_GSO_TCP or -SKB_GSO_TCP6 should be set in skb_shinfo()->gso_type and +When TCP segmentation requested the bit for either SKB_GSO_TCPV4 or +SKB_GSO_TCPV6 should be set in skb_shinfo()->gso_type and skb_shinfo()->gso_size should be set to a non-zero value. TCP segmentation is dependent on support for the use of partial checksum @@ -153,8 +153,18 @@ To signal this, gso_size is set to the special value GSO_BY_FRAGS. Therefore, any code in the core networking stack must be aware of the possibility that gso_size will be GSO_BY_FRAGS and handle that case -appropriately. (For size checks, the skb_gso_validate_*_len family of -helpers do this automatically.) +appropriately. + +There are some helpers to make this easier: + + - skb_is_gso(skb) && skb_is_gso_sctp(skb) is the best way to see if + an skb is an SCTP GSO skb. + + - For size checks, the skb_gso_validate_*_len family of helpers correctly + considers GSO_BY_FRAGS. + + - For manipulating packets, skb_increase_gso_size and skb_decrease_gso_size + will check for GSO_BY_FRAGS and WARN if asked to manipulate these skbs. This also affects drivers with the NETIF_F_FRAGLIST & NETIF_F_GSO_SCTP bits set. Note also that NETIF_F_GSO_SCTP is included in NETIF_F_GSO_SOFTWARE. |