From cbc53e08a793b073e79f42ca33f1f3568703540d Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Sun, 10 Apr 2016 21:44:51 -0400 Subject: GSO: Add GSO type for fixed IPv4 ID This patch adds support for TSO using IPv4 headers with a fixed IP ID field. This is meant to allow us to do a lossless GRO in the case of TCP flows that use a fixed IP ID such as those that convert IPv6 header to IPv4 headers. In addition I am adding a feature that for now I am referring to TSO with IP ID mangling. Basically when this flag is enabled the device has the option to either output the flow with incrementing IP IDs or with a fixed IP ID regardless of what the original IP ID ordering was. This is useful in cases where the DF bit is set and we do not care if the original IP ID value is maintained. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index a734bf43d190..7cf272a4b5c8 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -39,6 +39,7 @@ enum { NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */ NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */ NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ + NETIF_F_TSO_MANGLEID_BIT, /* ... IPV4 ID mangling allowed */ NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ NETIF_F_FSO_BIT, /* ... FCoE segmentation */ NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ @@ -120,6 +121,7 @@ enum { #define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT) #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) +#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) #define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) @@ -147,6 +149,7 @@ enum { /* List of features with software fallbacks. */ #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ + NETIF_F_TSO_MANGLEID | \ NETIF_F_TSO6 | NETIF_F_UFO) /* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be -- cgit v1.2.3 From 802ab55adc39a06940a1b384e9fd0387fc762d7e Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Sun, 10 Apr 2016 21:45:03 -0400 Subject: GSO: Support partial segmentation offload This patch adds support for something I am referring to as GSO partial. The basic idea is that we can support a broader range of devices for segmentation if we use fixed outer headers and have the hardware only really deal with segmenting the inner header. The idea behind the naming is due to the fact that everything before csum_start will be fixed headers, and everything after will be the region that is handled by hardware. With the current implementation it allows us to add support for the following GSO types with an inner TSO_MANGLEID or TSO6 offload: NETIF_F_GSO_GRE NETIF_F_GSO_GRE_CSUM NETIF_F_GSO_IPIP NETIF_F_GSO_SIT NETIF_F_UDP_TUNNEL NETIF_F_UDP_TUNNEL_CSUM In the case of hardware that already supports tunneling we may be able to extend this further to support TSO_TCPV4 without TSO_MANGLEID if the hardware can support updating inner IPv4 headers. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 7cf272a4b5c8..9fc79df0e561 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -48,6 +48,10 @@ enum { NETIF_F_GSO_SIT_BIT, /* ... SIT tunnel with TSO */ NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ + NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 + * in hardware and all other + * headers in software. + */ NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */ /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */ NETIF_F_GSO_TUNNEL_REMCSUM_BIT, @@ -122,6 +126,7 @@ enum { #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) +#define NETIF_F_GSO_PARTIAL __NETIF_F(GSO_PARTIAL) #define NETIF_F_GSO_TUNNEL_REMCSUM __NETIF_F(GSO_TUNNEL_REMCSUM) #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) -- cgit v1.2.3 From 756ca874417695f77941948a77e9b8562635cc0a Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 14 Apr 2016 17:04:34 -0400 Subject: netdev_features: Add NETIF_F_TSO_MANGLEID to NETIF_F_ALL_TSO I realized that when I added NETIF_F_TSO_MANGLEID as a TSO type I forgot to add it to NETIF_F_ALL_TSO. This patch corrects that so the flag will be included correctly. The result should be minor as it was only used by a few drivers and in a few specific cases such as when NETIF_F_SG was not supported on a device so the TSO flags were cleared. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 9fc79df0e561..15eb0b12fff9 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -164,7 +164,8 @@ enum { #define NETIF_F_CSUM_MASK (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ NETIF_F_HW_CSUM) -#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) +#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \ + NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID) #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ NETIF_F_FSO) -- cgit v1.2.3 From b1c20f0b97b4e565fa50cde1e6b44c2fd327a1e0 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Tue, 19 Apr 2016 14:02:19 -0400 Subject: netdev_features: Fold NETIF_F_ALL_TSO into NETIF_F_GSO_SOFTWARE This patch folds NETIF_F_ALL_TSO into the bitmask for NETIF_F_GSO_SOFTWARE. The idea is to avoid duplication of defines since the only difference between the two was the GSO_UDP bit. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 15eb0b12fff9..bc8736266749 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -152,11 +152,6 @@ enum { #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) -/* List of features with software fallbacks. */ -#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ - NETIF_F_TSO_MANGLEID | \ - NETIF_F_TSO6 | NETIF_F_UFO) - /* List of IP checksum features. Note that NETIF_F_ HW_CSUM should not be * set in features when NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM are set-- * this would be contradictory @@ -170,6 +165,9 @@ enum { #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ NETIF_F_FSO) +/* List of features with software fallbacks. */ +#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_UFO) + /* * If one device supports one of these features, then enable them * for all in netdev_increment_features. -- cgit v1.2.3 From 7e13318daa4a67bff2f800923a993ef3818b3c53 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 18 May 2016 09:06:10 -0700 Subject: net: define gso types for IPx over IPv4 and IPv6 This patch defines two new GSO definitions SKB_GSO_IPXIP4 and SKB_GSO_IPXIP6 along with corresponding NETIF_F_GSO_IPXIP4 and NETIF_F_GSO_IPXIP6. These are used to described IP in IP tunnel and what the outer protocol is. The inner protocol can be deduced from other GSO types (e.g. SKB_GSO_TCPV4 and SKB_GSO_TCPV6). The GSO types of SKB_GSO_IPIP and SKB_GSO_SIT are removed (these are both instances of SKB_GSO_IPXIP4). SKB_GSO_IPXIP6 will be used when support for GSO with IP encapsulation over IPv6 is added. Signed-off-by: Tom Herbert Acked-by: Jeff Kirsher Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index bc8736266749..aa7b2400f98c 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -44,8 +44,8 @@ enum { NETIF_F_FSO_BIT, /* ... FCoE segmentation */ NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ NETIF_F_GSO_GRE_CSUM_BIT, /* ... GRE with csum with TSO */ - NETIF_F_GSO_IPIP_BIT, /* ... IPIP tunnel with TSO */ - NETIF_F_GSO_SIT_BIT, /* ... SIT tunnel with TSO */ + NETIF_F_GSO_IPXIP4_BIT, /* ... IP4 or IP6 over IP4 with TSO */ + NETIF_F_GSO_IPXIP6_BIT, /* ... IP4 or IP6 over IP6 with TSO */ NETIF_F_GSO_UDP_TUNNEL_BIT, /* ... UDP TUNNEL with TSO */ NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */ NETIF_F_GSO_PARTIAL_BIT, /* ... Only segment inner-most L4 @@ -121,8 +121,8 @@ enum { #define NETIF_F_RXALL __NETIF_F(RXALL) #define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE) #define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM) -#define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP) -#define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT) +#define NETIF_F_GSO_IPXIP4 __NETIF_F(GSO_IPXIP4) +#define NETIF_F_GSO_IPXIP6 __NETIF_F(GSO_IPXIP6) #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) #define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) #define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID) @@ -200,8 +200,8 @@ enum { #define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \ NETIF_F_GSO_GRE_CSUM | \ - NETIF_F_GSO_IPIP | \ - NETIF_F_GSO_SIT | \ + NETIF_F_GSO_IPXIP4 | \ + NETIF_F_GSO_IPXIP6 | \ NETIF_F_GSO_UDP_TUNNEL | \ NETIF_F_GSO_UDP_TUNNEL_CSUM) -- cgit v1.2.3