Salil 862b3d2090 net: hns: Fix to conditionally convey RX checksum flag to stack ... This patch introduces the RX checksum function to check the status of the hardware calculated checksum and its error and appropriately convey status to the upper stack in skb->ip_summed field. In hardware, we only support checksum for the following protocols: 1) IPv4, 2) TCP(over IPv4 or IPv6), 3) UDP(over IPv4 or IPv6), 4) SCTP(over IPv4 or IPv6) but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP, UDP, GRE, SCTP, IGMP, ICMP etc.) protocols. Hardware limitation: Our present hardware RX Descriptor lacks L3/L4 checksum "Status & Error" bit (which usually can be used to indicate whether checksum was calculated by the hardware and if there was any error encountered during checksum calculation). Software workaround: We do get info within the RX descriptor about the kind of L3/L4 protocol coming in the packet and the error status. These errors might not just be checksum errors but could be related to version, length of IPv4, UDP, TCP etc. Because there is no-way of knowing if it is a L3/L4 error due to bad checksum or any other L3/L4 error, we will not (cannot) convey hardware checksum status(CHECKSUM_UNNECESSARY) for such cases to upper stack and will not maintain the RX L3/L4 checksum counters as well. Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-12-06 11:41:57 -05:00
..
hnae.c	net: hns: fix device reference leaks	2016-11-07 13:17:30 -05:00
hnae.h	net: hns: Fix to conditionally convey RX checksum flag to stack	2016-12-06 11:41:57 -05:00
hns_ae_adapt.c	net: hns: add the support to add/remove the ucast entry to/from table	2016-11-10 11:45:37 -05:00
hns_dsaf_gmac.c	net: hns: modify ethtool statistics value error	2016-11-10 11:45:37 -05:00
hns_dsaf_gmac.h
hns_dsaf_mac.c	net: hns: add the support to add/remove the ucast entry to/from table	2016-11-10 11:45:37 -05:00
hns_dsaf_mac.h	net: hns: add the support to add/remove the ucast entry to/from table	2016-11-10 11:45:37 -05:00
hns_dsaf_main.c	net: hns: add the support to add/remove the ucast entry to/from table	2016-11-10 11:45:37 -05:00
hns_dsaf_main.h	net: hns: add the support to add/remove the ucast entry to/from table	2016-11-10 11:45:37 -05:00
hns_dsaf_misc.c	net: hns: fix to intimate the link-status change by adding LF/RF method	2016-11-10 11:45:37 -05:00
hns_dsaf_misc.h	net: hns: Add support of ACPI to HNS driver RoCE Reset function	2016-08-25 10:05:10 -04:00
hns_dsaf_ppe.c	net: hns: dereference ppe_cb->ppe_common_cb if it is non-null	2016-08-26 11:44:56 -07:00
hns_dsaf_ppe.h	net: hns: separate debug dsaf device from service dsaf device	2016-04-26 01:09:17 -04:00
hns_dsaf_rcb.c	net: hns: bug fix about setting coalsecs-usecs to 0	2016-10-03 11:40:57 -04:00
hns_dsaf_rcb.h	net: hns: change the default coalesce usecs	2016-06-21 04:51:56 -04:00
hns_dsaf_reg.h	net: hns: fix to intimate the link-status change by adding LF/RF method	2016-11-10 11:45:37 -05:00
hns_dsaf_xgmac.c	net: hns: fix to intimate the link-status change by adding LF/RF method	2016-11-10 11:45:37 -05:00
hns_dsaf_xgmac.h	net: hns: fix to intimate the link-status change by adding LF/RF method	2016-11-10 11:45:37 -05:00
hns_enet.c	net: hns: Fix to conditionally convey RX checksum flag to stack	2016-12-06 11:41:57 -05:00
hns_enet.h	net: ethernet: hisilicon: hns: use phydev from struct net_device	2016-09-22 02:11:40 -04:00
hns_ethtool.c	net: hns: bug fix about restart auto-negotiation	2016-11-10 11:45:37 -05:00
Makefile	net: add Hisilicon Network Subsystem basic ethernet support	2015-09-20 21:42:58 -07:00