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i40e/i40evf: Handle IPv6 extension headers in checksum offload

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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: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2016-01-24 21:16:54 -08:00 committed by Jeff Kirsher
parent a0064728f8
commit a3fd9d8876
2 changed files with 26 additions and 2 deletions
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14
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -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 */

14
drivers/net/ethernet/intel/i40evf/i40e_txrx.c
View File

@ -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 */