From: Gurucharan Shetty Date: Tue, 15 Dec 2009 13:00:31 +0000 (+0000) Subject: ixgbe: allow tx of pre-formatted vlan tagged packets X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ca553980432898da5d4125573a9e2aee6ed5d355;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git ixgbe: allow tx of pre-formatted vlan tagged packets When the 82598 is fed 802.1q packets, it chokes with an error of the form: ixgbe: eth0: ixgbe_tx_csum: partial checksum but proto=81! As the logic there was not smart enough to look into the vlan header to pick out the encapsulated protocol. There are times when we'd like to send these packets out without having to configure a vlan on the interface. Here we check for the vlan tag and allow the packet to go out with the correct hardware checksum. This patch is a clone of a previously submitted patch by Arthur Jones for igb (Commit - fa4a7ef36ec834fee1719636b30d2f28f4cb0166). Signed-off-by: Gurucharan Shetty Signed-off-by: Arthur Jones Acked-by: Mallikarjuna R Chilakala Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 529274824931..bd64387563f0 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -5006,7 +5006,18 @@ static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, IXGBE_ADVTXD_DTYP_CTXT); if (skb->ip_summed == CHECKSUM_PARTIAL) { - switch (skb->protocol) { + __be16 protocol; + + if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { + const struct vlan_ethhdr *vhdr = + (const struct vlan_ethhdr *)skb->data; + + protocol = vhdr->h_vlan_encapsulated_proto; + } else { + protocol = skb->protocol; + } + + switch (protocol) { case cpu_to_be16(ETH_P_IP): type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; if (ip_hdr(skb)->protocol == IPPROTO_TCP)