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ibmvnic: Include header descriptor support for ARP packets 

In recent tests with new adapters, it was discovered that ARP
packets were not being properly processed. This patch adds
support for ARP packet headers to be passed to backing adapters,
if necessary.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Falcon 2017-12-18 12:52:40 -06:00 committed by David S. Miller
parent 61afe07ad6
commit 4eb50ceb5c
1 changed files with 6 additions and 1 deletions
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7
drivers/net/ethernet/ibm/ibmvnic.c
View File

@ -59,6 +59,7 @@
#include <linux/mm.h>
#include <linux/ethtool.h>
#include <linux/proc_fs.h>
#include <linux/if_arp.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
@ -1153,6 +1154,9 @@ static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
hdr_len[2] = tcp_hdrlen(skb);
else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
hdr_len[2] = sizeof(struct udphdr);
} else if (skb->protocol == htons(ETH_P_ARP)) {
hdr_len[1] = arp_hdr_len(skb->dev);
hdr_len[2] = 0;
}
memset(hdr_data, 0, 120);
@ -1386,7 +1390,8 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
/* determine if l2/3/4 headers are sent to firmware */
if ((*hdrs >> 7) & 1 &&
(skb->protocol == htons(ETH_P_IP) ||
skb->protocol == htons(ETH_P_IPV6))) {
skb->protocol == htons(ETH_P_IPV6) ||
skb->protocol == htons(ETH_P_ARP))) {
build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
tx_crq.v1.n_crq_elem = num_entries;
tx_buff->indir_arr[0] = tx_crq;