Commit a3fd9d88 authored by Alexander Duyck's avatar Alexander Duyck Committed by Jeff Kirsher

i40e/i40evf: Handle IPv6 extension headers in checksum offload

This patch adds support for IPv6 extension headers in setting up the Tx
checksum.  Without this patch extension headers would cause IPv6 traffic to
fail as the transport protocol could not be identified.
Signed-off-by: default avatarAlexander Duyck <aduyck@mirantis.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent a0064728
......@@ -2402,7 +2402,9 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
struct udphdr *udp;
unsigned char *hdr;
} l4;
unsigned char *exthdr;
u32 l4_tunnel = 0;
__be16 frag_off;
u8 l4_proto = 0;
ip.hdr = skb_network_header(skb);
......@@ -2419,7 +2421,12 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
l4_proto = ip.v4->protocol;
} else if (*tx_flags & I40E_TX_FLAGS_IPV6) {
*cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV6;
exthdr = ip.hdr + sizeof(*ip.v6);
l4_proto = ip.v6->nexthdr;
if (l4.hdr != exthdr)
ipv6_skip_exthdr(skb, exthdr - skb->data,
&l4_proto, &frag_off);
}
/* define outer transport */
......@@ -2469,8 +2476,13 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
*td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4;
}
} else if (*tx_flags & I40E_TX_FLAGS_IPV6) {
l4_proto = ip.v6->nexthdr;
*td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV6;
exthdr = ip.hdr + sizeof(*ip.v6);
l4_proto = ip.v6->nexthdr;
if (l4.hdr != exthdr)
ipv6_skip_exthdr(skb, exthdr - skb->data,
&l4_proto, &frag_off);
}
/* Now set the td_offset for IP header length */
......
......@@ -1619,7 +1619,9 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
struct udphdr *udp;
unsigned char *hdr;
} l4;
unsigned char *exthdr;
u32 l4_tunnel = 0;
__be16 frag_off;
u8 l4_proto = 0;
ip.hdr = skb_network_header(skb);
......@@ -1636,7 +1638,12 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
l4_proto = ip.v4->protocol;
} else if (*tx_flags & I40E_TX_FLAGS_IPV6) {
*cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV6;
exthdr = ip.hdr + sizeof(*ip.v6);
l4_proto = ip.v6->nexthdr;
if (l4.hdr != exthdr)
ipv6_skip_exthdr(skb, exthdr - skb->data,
&l4_proto, &frag_off);
}
/* define outer transport */
......@@ -1686,8 +1693,13 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
*td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4;
}
} else if (*tx_flags & I40E_TX_FLAGS_IPV6) {
l4_proto = ip.v6->nexthdr;
*td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV6;
exthdr = ip.hdr + sizeof(*ip.v6);
l4_proto = ip.v6->nexthdr;
if (l4.hdr != exthdr)
ipv6_skip_exthdr(skb, exthdr - skb->data,
&l4_proto, &frag_off);
}
/* Now set the td_offset for IP header length */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment